MFH: r282315-r282534

Sponsored by:	The FreeBSD Foundation

96 files changed, 2882 insertions, 5821 deletions

diff --git a/contrib/ntp/sntp/Makefile.in b/contrib/ntp/sntp/Makefile.in
index f587005..fac19cc 100644
--- a/contrib/ntp/sntp/Makefile.in
+++ b/contrib/ntp/sntp/Makefile.in
@@ -61,8 +61,6 @@ subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/libopts/m4/stdnoreturn.m4 \
-	$(top_srcdir)/libevent/m4/openldap-thread-check.m4 \
-	$(top_srcdir)/libevent/m4/openldap.m4 \
 	$(top_srcdir)/m4/hms_search_lib.m4 $(top_srcdir)/m4/libtool.m4 \
 	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
 	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
@@ -82,8 +80,10 @@ am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/m4/ntp_prog_cc.m4 $(top_srcdir)/m4/ntp_sntp.m4 \
 	$(top_srcdir)/m4/ntp_sysexits.m4 \
 	$(top_srcdir)/m4/ntp_ver_suffix.m4 \
-	$(top_srcdir)/m4/os_cflags.m4 $(top_srcdir)/m4/snprintf.m4 \
-	$(top_srcdir)/m4/version.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/openldap-thread-check.m4 \
+	$(top_srcdir)/m4/openldap.m4 $(top_srcdir)/m4/os_cflags.m4 \
+	$(top_srcdir)/m4/snprintf.m4 $(top_srcdir)/m4/version.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
@@ -394,6 +394,11 @@ TIMETRIM_DL = @TIMETRIM_DL@
 TIMETRIM_DS = @TIMETRIM_DS@
 TIMETRIM_MS = @TIMETRIM_MS@
 TIMETRIM_NI = @TIMETRIM_NI@
+UPDATE_LEAP_DB = @UPDATE_LEAP_DB@
+UPDATE_LEAP_DL = @UPDATE_LEAP_DL@
+UPDATE_LEAP_DS = @UPDATE_LEAP_DS@
+UPDATE_LEAP_MS = @UPDATE_LEAP_MS@
+UPDATE_LEAP_NI = @UPDATE_LEAP_NI@
 VERSION = @VERSION@
 VER_SUFFIX = @VER_SUFFIX@
 abs_builddir = @abs_builddir@
diff --git a/contrib/ntp/sntp/aclocal.m4 b/contrib/ntp/sntp/aclocal.m4
index aff791b..5d30c42 100644
--- a/contrib/ntp/sntp/aclocal.m4
+++ b/contrib/ntp/sntp/aclocal.m4
@@ -1132,8 +1132,6 @@ AC_SUBST([am__untar])
 
 m4_include([libopts/m4/libopts.m4])
 m4_include([libopts/m4/stdnoreturn.m4])
-m4_include([libevent/m4/openldap-thread-check.m4])
-m4_include([libevent/m4/openldap.m4])
 m4_include([m4/hms_search_lib.m4])
 m4_include([m4/libtool.m4])
 m4_include([m4/ltoptions.m4])
@@ -1159,5 +1157,7 @@ m4_include([m4/ntp_prog_cc.m4])
 m4_include([m4/ntp_sntp.m4])
 m4_include([m4/ntp_sysexits.m4])
 m4_include([m4/ntp_ver_suffix.m4])
+m4_include([m4/openldap-thread-check.m4])
+m4_include([m4/openldap.m4])
 m4_include([m4/os_cflags.m4])
 m4_include([m4/snprintf.m4])
diff --git a/contrib/ntp/sntp/configure b/contrib/ntp/sntp/configure
index b4c66f7..76bdd28 100755
--- a/contrib/ntp/sntp/configure
+++ b/contrib/ntp/sntp/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.68 for sntp 4.2.8p1.
+# Generated by GNU Autoconf 2.68 for sntp 4.2.8p2.
 #
 # Report bugs to <http://bugs.ntp.org./>.
 #
@@ -570,8 +570,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='sntp'
 PACKAGE_TARNAME='sntp'
-PACKAGE_VERSION='4.2.8p1'
-PACKAGE_STRING='sntp 4.2.8p1'
+PACKAGE_VERSION='4.2.8p2'
+PACKAGE_STRING='sntp 4.2.8p2'
 PACKAGE_BUGREPORT='http://bugs.ntp.org./'
 PACKAGE_URL='http://www.ntp.org./'
 
@@ -686,6 +686,13 @@ SED
 LDADD_LIBNTP
 NTP_CROSSCOMPILE_FALSE
 NTP_CROSSCOMPILE_TRUE
+INSTALL_UPDATE_LEAP_FALSE
+INSTALL_UPDATE_LEAP_TRUE
+UPDATE_LEAP_NI
+UPDATE_LEAP_MS
+UPDATE_LEAP_DS
+UPDATE_LEAP_DL
+UPDATE_LEAP_DB
 TIMETRIM_NI
 TIMETRIM_MS
 TIMETRIM_DS
@@ -1457,7 +1464,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures sntp 4.2.8p1 to adapt to many kinds of systems.
+\`configure' configures sntp 4.2.8p2 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1527,7 +1534,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of sntp 4.2.8p1:";;
+     short | recursive ) echo "Configuration of sntp 4.2.8p2:";;
    esac
   cat <<\_ACEOF
 
@@ -1670,7 +1677,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-sntp configure 4.2.8p1
+sntp configure 4.2.8p2
 generated by GNU Autoconf 2.68
 
 Copyright (C) 2010 Free Software Foundation, Inc.
@@ -2495,7 +2502,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by sntp $as_me 4.2.8p1, which was
+It was created by sntp $as_me 4.2.8p2, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
@@ -3438,7 +3445,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='sntp'
- VERSION='4.2.8p1'
+ VERSION='4.2.8p2'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -7032,6 +7039,19 @@ fi
 
 
 
+ if test -z "$UPDATE_LEAP_NI" ; then
+  INSTALL_UPDATE_LEAP_TRUE=
+  INSTALL_UPDATE_LEAP_FALSE='#'
+else
+  INSTALL_UPDATE_LEAP_TRUE='#'
+  INSTALL_UPDATE_LEAP_FALSE=
+fi
+
+
+
+
+
+
 
 
 # Expose a cross-compilation indicator to makefiles
@@ -30185,6 +30205,10 @@ if test -z "${INSTALL_NTPSWEEP_TRUE}" && test -z "${INSTALL_NTPSWEEP_FALSE}"; th
   as_fn_error $? "conditional \"INSTALL_NTPSWEEP\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${INSTALL_UPDATE_LEAP_TRUE}" && test -z "${INSTALL_UPDATE_LEAP_FALSE}"; then
+  as_fn_error $? "conditional \"INSTALL_UPDATE_LEAP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${NTP_CROSSCOMPILE_TRUE}" && test -z "${NTP_CROSSCOMPILE_FALSE}"; then
   as_fn_error $? "conditional \"NTP_CROSSCOMPILE\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -30630,7 +30654,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by sntp $as_me 4.2.8p1, which was
+This file was extended by sntp $as_me 4.2.8p2, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -30697,7 +30721,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-sntp config.status 4.2.8p1
+sntp config.status 4.2.8p2
 configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
diff --git a/contrib/ntp/sntp/include/Makefile.in b/contrib/ntp/sntp/include/Makefile.in
index 9f5c92a..31db061 100644
--- a/contrib/ntp/sntp/include/Makefile.in
+++ b/contrib/ntp/sntp/include/Makefile.in
@@ -40,8 +40,6 @@ DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/libopts/m4/stdnoreturn.m4 \
-	$(top_srcdir)/libevent/m4/openldap-thread-check.m4 \
-	$(top_srcdir)/libevent/m4/openldap.m4 \
 	$(top_srcdir)/m4/hms_search_lib.m4 $(top_srcdir)/m4/libtool.m4 \
 	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
 	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
@@ -61,8 +59,10 @@ am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/m4/ntp_prog_cc.m4 $(top_srcdir)/m4/ntp_sntp.m4 \
 	$(top_srcdir)/m4/ntp_sysexits.m4 \
 	$(top_srcdir)/m4/ntp_ver_suffix.m4 \
-	$(top_srcdir)/m4/os_cflags.m4 $(top_srcdir)/m4/snprintf.m4 \
-	$(top_srcdir)/m4/version.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/openldap-thread-check.m4 \
+	$(top_srcdir)/m4/openldap.m4 $(top_srcdir)/m4/os_cflags.m4 \
+	$(top_srcdir)/m4/snprintf.m4 $(top_srcdir)/m4/version.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -249,6 +249,11 @@ TIMETRIM_DL = @TIMETRIM_DL@
 TIMETRIM_DS = @TIMETRIM_DS@
 TIMETRIM_MS = @TIMETRIM_MS@
 TIMETRIM_NI = @TIMETRIM_NI@
+UPDATE_LEAP_DB = @UPDATE_LEAP_DB@
+UPDATE_LEAP_DL = @UPDATE_LEAP_DL@
+UPDATE_LEAP_DS = @UPDATE_LEAP_DS@
+UPDATE_LEAP_MS = @UPDATE_LEAP_MS@
+UPDATE_LEAP_NI = @UPDATE_LEAP_NI@
 VERSION = @VERSION@
 VER_SUFFIX = @VER_SUFFIX@
 abs_builddir = @abs_builddir@
diff --git a/contrib/ntp/sntp/include/version.def b/contrib/ntp/sntp/include/version.def
index 47e57c8..c315fe8 100644
--- a/contrib/ntp/sntp/include/version.def
+++ b/contrib/ntp/sntp/include/version.def
@@ -1 +1 @@
-version = '4.2.8p1';
+version = '4.2.8p2';
diff --git a/contrib/ntp/sntp/include/version.texi b/contrib/ntp/sntp/include/version.texi
index bc3cc06..d5ea0c0 100644
--- a/contrib/ntp/sntp/include/version.texi
+++ b/contrib/ntp/sntp/include/version.texi
@@ -1,3 +1,3 @@
-@set UPDATED 04 February 2015
-@set EDITION 4.2.8p1
-@set VERSION 4.2.8p1
+@set UPDATED 07 April 2015
+@set EDITION 4.2.8p2
+@set VERSION 4.2.8p2
diff --git a/contrib/ntp/sntp/invoke-sntp.texi b/contrib/ntp/sntp/invoke-sntp.texi
index e9be80c..bed49ec 100644
--- a/contrib/ntp/sntp/invoke-sntp.texi
+++ b/contrib/ntp/sntp/invoke-sntp.texi
@@ -6,7 +6,7 @@
 #
 # EDIT THIS FILE WITH CAUTION  (invoke-sntp.texi)
 #
-# It has been AutoGen-ed  February  4, 2015 at 02:34:17 AM by AutoGen 5.18.5pre4
+# It has been AutoGen-ed  April  7, 2015 at 04:18:04 AM by AutoGen 5.18.5pre4
 # From the definitions    sntp-opts.def
 # and the template file   agtexi-cmd.tpl
 @end ignore
@@ -56,7 +56,8 @@ Otherwise, only the
 is displayed.
 Finally, the
 @emph{stratum}
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 
 This section was generated by @strong{AutoGen},
 using the @code{agtexi-cmd} template and the option descriptions for the @code{sntp} program.
@@ -100,7 +101,7 @@ with a status code of 0.
 
 @exampleindent 0
 @example
-sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p1
+sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p2
 Usage:  sntp [ -<flag> [<val>] | --<name>[@{=| @}<val>] ]... \
                 [ hostname-or-IP ...]
   Flg Arg Option-Name    Description
diff --git a/contrib/ntp/sntp/libevent/ChangeLog b/contrib/ntp/sntp/libevent/ChangeLog
index 8bb76ca..1499637 100644
--- a/contrib/ntp/sntp/libevent/ChangeLog
+++ b/contrib/ntp/sntp/libevent/ChangeLog
@@ -1,23 +1,282 @@
-Changes in version 2.1.4-beta (?? Dec 2013)
+Changes in version 2.1.5-beta (5 January 2015)
 
- (As of 735d838b0a537ae04f1e6a2e9cbc5f3f45ebb541)
+ Security Fixes (evbuffers)
+   o Avoid integer overflow bugs in evbuffer_add() and related functions.  See CVE-2014-6272 advisory for more information. (d49bc0e88b81a5812116074dc007f1db0ca1eecd)
 
+ New APIs (evconnlistener)
+   o Provide support for SO_REUSEPORT through LEV_OPT_REUSABLE_PORT (b625361 Maciej Soltysiak)
+
+ Bugfixes (core)
+    o Fix use-after-free error in EV_CLOSURE_EVENT callback (3cc0eac John Ohl)
+    o Fix race caused by event_active (3c7d6fc vjpai)
+
+ Bugfixes (evbuffer)
+   o Fix evbuffer_peek() with len==-1 and start_at non-NULL. (ba59923)
+   o Consistently check for failure from evbuffer_pullup() (60f8f72)
+   o Fix evbuffer_peek() with len==-1 and start_at non-NULL. (fb7e76a)
+
+ Bugfixes (windows, IOCP)
+   o be async: avoid double close() (f133b86 Azat Khuzhin)
+
+ Bugfixes (bufferevents)
+   o Fix issue #127, double free for filterevents that use BEV_OPT_CLOSE_ON_FREE (2c82aa0 John Ohl)
+   o make bufferevent_getwatermark api more robust (a21e510 ufo2243)
+   o [Bugfix] fix bufferevent setwatermark suspend_read (b34e4ac ufo2243)
+   o bufferevent_openssl: reset fd_is_set when setfd with -1 is called (3da84c2 Azat Khuzhin)
+   o Fix compilation for older OpenSSL versions. (5c7282f Joakim Soderberg)
+
+ New APIs (evhttp)
+   o Add evhttp_connection_set_family() to set addrinfo->family for DNS requests (12c29b0 Azat Khuzhin)
+   o Implement interface that provides the ability to have an outbound evhttp_connection free itself once all requests have completed (2b9ec4c,10fe4f John Ohl)
+
+ New APIs (core)
+   o Implement new/free for struct evutil_monotonic_timer and export monotonic time functions (f2645f8 Andrea Shepard)
+
+ Bugfixes (evdns)
+   o Load hosts file on Windows. (a0b247c Vilmos Nebehaj)
+   o Don't truncate hosts file path on Windows. (d0dc861 Vilmos Nebehaj)
+   o Fix a crash in evdns related to shutting down evdns (9f39c88,e8fe749)
+   o evdns: avoid read-after-free in evdns_request_timeout_callback() (61262a0 Azat Khuzhin)
+   o Correctly handle allocation failures in evdns_getaddrinfo (6a53d15)
+   o evdns: fix EVDNS_BASE_DISABLE_WHEN_INACTIVE in case retransmit/retry (74d0eee Azat Khuzhin)
+   o evdns: add retry/reissue tests for EVDNS_BASE_DISABLE_WHEN_INACTIVE (3ca9d43 Azat Khuzhin)
+   o evdns: fail ns after we are failing/retrasmitting request (97c750d Azat Khuzhin)
+
+ Bugfixes (evhttp)
+   o http: reset connection before installing retry timer (fix http retries handling) (bc79cc5 Azat Khuzhin)
+
+
+ Testing
+   o regress_dns: fix leaks in getaddrinfo_async{,_cancel_stress} tests (2fdc5f2 Azat Khuzhin)
+   o test: add family argument for http_connection_test_() (177b8a7 Azat Khuzhin)
+   o test: add regress for evhttp_connection_set_family() with AF_INET and AF_UNSPEC (42aefeb Azat Khuzhin)
+   o test/http: add regress test for set family to AF_INET6 (3fbf3cc Azat Khuzhin)
+   o Update to a more recent tinytest_macros. (8da5a18)
+   o test/regress: add simplestsignal: to track reorder bugs separately (b897bef Azat Khuzhin)
+   o test/evbuffer_peek: add regress in case we have first buffer greater (e2d139d Azat Khuzhin)
+   o More evbuffer_peek() test cases (154006a)
+   o use correct tt macro for pointer compare (08c88ea)
+   o regress_buffer: fix 'memcmp' compare size (79800df Maks Naumov)
+   o Fix a use-after-free in unit tests. CID 752027 (3739057)
+   o Fix a dead-code warning in unit tests. CID 1193548 (c119f24)
+   o Use evutil_weakrand() in unit tests. (a677b72, 364c110)
+   o Use a more precise calculation for max in time-ratelim.c (ca5b5c7)
+   o Make a buffer larger in the tests to avoid a scary evbuffer_copyout_from() (fb57b8b)
+   o Fix several memory leaks in the unit tests. (89c1a3b)
+   o Add test for evhttp_connection_free_on_completion (b0e9924 John Ohl)
+   o Fix annoying heisenbug in test-time.c (cb73704)
+
+ Sample code
+   o Make http-server.c output into good html5 (6d72bdc)
+   o Use FindClose for handle from FindFirstFile in http-server.c (6466e88)
+   o https-client: add -retries argument, for connection retries (d9da844 Azat Khuzhin)
+
+ Bugfixes (build)
+   o Add missing headerfile for cmake (15d90cc Trond Norbye)
+   o ignore one more test binary (b6593aa Michael Richardson)
+   o ignore config.cache/test-driver files (c83f333 Mike Frysinger)
+   o add a --disable-samples configure flag (0c492b3 Mike Frysinger)
+   o Add a few files created by "make verify" to .gitignore. (1a8295a Pierre Phaneuf)
+   o updates in cmake build (27bd9fa Sergey Nikulov)
+   o Fix cmake error when the Module path has more than one entry. (befbd13 Acer Yang)
+   o Fix CMake shared library build (e69d910 Nobuaki Sukegawa)
+   o Fix warnings when compiling with clang 3.5 (f5b4765 John Ohl)
+   o Fix mixed declarations and code (forbidden by ISO C90) (8afbdbc Thomas Bernard)
+
+ Bugfixes (miscellaneous)
+   o tree.h: drop duplicated content of tree.h (6193187 Azat Khuzhin)
+   o evdns: disable probing with EVDNS_BASE_DISABLE_WHEN_INACTIVE (610410b,ad0493e,fea86a6,d83b337,5ca9e97 Azat Khuzhin)
+   o [Bugfix] fix grammer error (3a4d249 ufo2243)
+   o Change return type of evutil_load_windows_system_library_ to HMODULE (f691389)
+   o Fix a c90 warning (76643dd)
+   o Fix a typo in a doxygen comment. Reported by 亦得. (be1aeff)
+   o remove trailing comma from enum (b361b8a Jean-Philippe Ouellet)
+
+ Bugfixes (FreeBSD)
+   o Handle ENOTCAPABLE from FreeBSD - this is returned if an event in the changelist is for an FD that has been closed. (6fd7394 Adrian Chadd)
+
+
+
+Changes in version 2.1.4-alpha (21 Mar 2014)
+
+ Libevent 2.1.4-alpha adds a number of new miscellaneous APIs to make
+ Libevent more useful, including support for early close detection with
+ epoll via EPOLLRDHUP, triggering bufferevent callbacks, adding more
+ evhttp callbacks, and more. There are also numerous bugfixes, including
+ a number for finalize-related issues from 2.1.3-alpha; and an
+ alternative (non-primary!) cmake-based build mechanism.
+
+ New APIs (core)
+   o Added event_base_get_num_events() (0fa107d Mobai Zhang)
+   o New event_base_active_by_fd API (865a142 Greg Hazel, 5c9da9a, 87fa2b0)
+   o Add event_base_active_by_signal by analogy (4865943)
+   o Add access to max event count stats (5173bef, efbd3dc, 26230a2
+     Andrew Sweeney)
+   o Implemented EV_CLOSED event for epoll backend
+     (EPOLLRDHUP). (b1b69ac Diego Giagio, 53d2793, 43ffcf6, dfe1e52
+     Marcin Juszkiewicz, ff26633 Joakim Soderberg, 3908a5e)
+
+ New APIs (evutil_secure_rng)
+   o Add evutil_secure_rng_set_urandom_device_file (2bbb5d7)
+
+ New APIs (bufferevents)
+   o Add function to fetch underlying ratelimit cfg (4b3d5af Mark Ellzey)
+   o Pass and return const for bufferevent_get_token_bucket_cfg (1c77fbb
+     Mark Ellzey)
+   o Add watermark introspection (4ce242b Ondřej Kuzník)
+   o Add an option to trigger bufferevent I/O callbacks (61ee18b Ondřej Kuzník)
+   o Add an option to trigger bufferevent event callbacks (a7384c7
+     Ondřej Kuzník)
+   o Clarifications in response to merge req. comments (bd41947 Ondřej
+     Kuzník)
+   o Minor optimizations on bufferevent_trigger options (a3172a4)
+
+ New APIs (evhttp)
+   o Add evhttp_connection_get_server(). (a7f82a3 Maxime Henrion)
+   o add a http default content type option (5a5acd9 Nicolas Martyanoff)
+   o http: implement new evhttp_connection_get_addr() api. (0c7f040 Azat
+     Khuzhin)
+   o Add a variant of evhttp_send_reply_chunk() with a callback on
+     evhttp_write_buffer() (8d8decf Julien BLACHE)
+   o Allow registering callback for parsing HTTP headers (b0bd7fe Balint Reczey)
+   o Provide on request complete callback facility (b083ca0 Andrew Sweeney)
+   o evhttp_request_set_on_complete_cb to be more specific about what
+     the function actually does and usage (da86dda Andrew Sweeney)
+   o Update unit test to make sure that the callback happens after the
+     output data is written (b85f398 Andrew Sweeney)
+
+ Features (evdns)
+   o bug fix for issues #293 evdns_base_load_hosts doesn't remove
+     outdated addresses (954d2f9, f03d353, 45eba6f Kuldeep Gupta)
+
+ Features: (cmake build support)
+   o Initial CMake commit. (e415196 Joakim Soderberg)
+   o Add all tests and benchmarks to CMake project. (e9fc014 Joakim Soderberg)
+   o More work on adding tests to CMake project (99c1dc3 Joakim Soderberg)
+   o Generate a dummy evconfig-private.h so things build
+     properly. (ce14def Joakim Soderberg)
+   o Link libm on unix platforms. (58fcd42 Joakim Soderberg)
+   o Added some GCC specific options. (19222e5 Joakim Soderberg)
+   o Use evutil_closesocket instead. (dbf2b51 Joakim Soderberg)
+   o Add copyright and licensing files for CMake modules. (c259d53
+     Joakim Soderberg)
+   o Only include WIN32 getopt where it is used. (9bbce0b Joakim Soderberg)
+   o Fix bench_cascade program on Windows. (78da644 Joakim Soderberg)
+   o Don't segfault on no found event backend. (8f2af50 Joakim Soderberg)
+   o Only test the event backends available on the system. (7ea4159
+     Joakim Soderberg)
+   o Added a "make verify" target. (e053c4f Joakim Soderberg)
+   o Fix the make "verify" target on Windows. (67e5d74 Joakim Soderberg)
+   o Get rid of deprecation warnings for OpenSSL on OSX 10.7+ (69c3516
+     Joakim Söderberg)
+   o Fix kqueue support. (a831f2f Joakim Söderberg)
+   o Added a test for testing if kqueue works with pipes. (2799b35
+     Joakim Söderberg)
+   o Change the BSD license from 4 to 3-clause. (86df3ed Joakim Soderberg)
+   o Minimum required python version is 2.4. (968e97b Joakim Soderberg)
+   o Get rid of unknown pragma warnings. (0ef1d04 Joakim Soderberg)
+   o Add a "make verify_coverage" target generation coverage
+     info. (f2483f8 Joakim Soderberg)
+   o Fix the "make verify" target on NetBSD (4ac086a Joakim Soderberg)
+   o Only look for ZLib when it is used (if tests are
+     included). (f780593 Joakim Soderberg)
+   o Added EVENT__ENABLE_GCC_WARNINGS, turns all warnings into
+     errors. (dd413bd Joakim Soderberg)
+   o Add CMake config and install targets. (f3446ed Joakim Soderberg)
+   o Fix typo (4b754df Joakim Soderberg)
+   o Some work on making it possible to simply do add_subdirectory() on
+     the project. (49ab363 Joakim Soderberg)
+   o Set USE_DEBUG=1 on EVENT__ENABLE_VERBOSE_DEBUG (fd42e70 Joakim Soderberg)
+   o Fix so that old nmake project still builds. (24d6466 Joakim
+     Soderberg)
+   o Rename README to README.md and use markdown to format. (d2bc39a
+     Joakim Soderberg)
+   o Update README with CMake build instructions. (604b8cc Joakim Soderberg)
+   o Clean up the README some. (8d4cb35 JoakimSoderberg)
+   o Forgotten headers for old nmake project compatability. (8697b99
+     Joakim Soderberg)
+   o Change all uses of WIN32 to _WIN32 (4e14395 Joakim Söderberg)
+   o Fix include bug. (2024467 Joakim Söderberg)
+   o Check if we're on OSX before disabling deprecation in le-proxy
+     (8b40a5b Joakim Söderberg)
+   o Fix broken autotools build. (ae1bd82 Joakim Söderberg)
+   o Disclaimerize cmake a little in the README (d03b5bf)
+   o Fix CMake compile when OpenSSL is disabled. (e423d42 Joakim
+     Söderberg)
+   o CMake: Get rid of python not found warning when regress tests
+     turned off. (d38d798 Joakim Söderberg)
+   o Fix https-client compilation on Windows. (d7be788 Joakim Soderberg)
+   o Guard against EVENT_NOWIN32 being set during testing. (f1715b4
+     Joakim Soderberg)
+   o Check for OSX when checking for clang. (e212c54 Joakim Soderberg)
+   o Added a Travis-CI configuration file. (8c0f0a9 Joakim Soderberg)
+   o Added -Qunused-arguments for clang on macosx (ed99d92 Trond Norbye)
+   o Rename event_extras to event_extra (a0dd5df Trond Norbye)
+   o Add option to build shared library (4545fa9 Trond Norbye)
+   o Add -Qunused-arguments for clang on macos (b56611d Trond Norbye)
+   o Add cmake-related files to .gitignore (e061321 Trond Norbye)
+   o Export event_extra not event_extras. (2b41bcf Joakim Söderberg)
+
+ Bugfixes (core)
+   o If evsel->del() fails, don't leave the evmap in an inconsistent
+     state (9b5a527 Maxime Henrion)
+   o Move event_debug_note_teardown_ before mm_free. (69b5c64)
+   o Check CLOCK_MONOTONIC_* at runtime if needed. (911abf3)
+   o Fix reinit of fds with EV_WRITE but not EV_READ. (ebfd8a8 maksqwe)
+   o Tweaked callbacks to prevent race condition
+     (https://github.com/libevent/libevent/issues/104) (40830f1, 2ea15ed
+     John Ohl)
+   o Move assert(ev) to before we use ev in EV_CLOSURE_EVENT_FINALIZE
+     case (9805972)
+
+ Bugfixes (evhttp)
+   o Fix a double close() bug in evhttp when the underlying bufferevent uses
+     BEV_OPT_CLOSE_ON_FREE. (31db8a0 Maxime Henrion)
+   o Fix an unlikely but possible error case for http connections (f22049e)
+   o Avoid racy bufferevent activation (5eb1788 Nate Rosenblum)
+
+ Bugfixes on 2.0 (Windows)
+   o Use windows vsnprintf fixup logic on all windows environments (e826f19)
+   o libevent/win32_dealloc() : fix sizeof(pointer) vs sizeof(*pointer)
+    (b8f5980 Frank Denis)
+
+ Bugfixes (evutil_secure_rng)
+   o When we seed from /proc/sys/kernel/random/uuid, count it as success
+     (e35b540)
+   o We should return after arc4random_buf() (1ea1f26 Makoto Kato)
+   o Avoid other RNG initialization FS reads when urandom file is
+     specified (9695e9c)
+   o Really remove RNG seeds from the stack (f5ced88)
+   o Fix another arc4random_buf-related warning (e64a2b0)
+
+ Bugfixes (bufferevents)
+   o Initialize async bufferevent timeout CBs unconditionally (af9b2a7)
 
  Bugfixes (evdns)
    o Checking request nameserver for NULL, before using it. (5c710c0
      Belobrov Andrey)
-   o Fix SEGFAULT after evdns_base_resume if no nameservers installed. (14971a8
-     Azat Khuzhin)
+   o Fix SEGFAULT after evdns_base_resume if no nameservers
+     installed. (14971a8 Azat Khuzhin)
    o Actually use the log facility for reporting evdns problems. (e1766a1)
-   o Fix SEGFAULT after evdns_base_resume if no nameservers installed. (f8d7df8 Azat Khuzhin)
+   o Fix SEGFAULT after evdns_base_resume if no nameservers
+     installed. (f8d7df8 Azat Khuzhin)
+   o fix for ServFail from RIPE Atlas release (62f596b Antony Antony)
 
- Bugfixes (compilatin)
+ Bugfixes (compilation)
    o Fix test compilation with nmake: add the gdi.lib dependency (5ba8ab7)
    o Whoops. It is gdi.lib, not gdi32.lib. (github issue #61) (8ab612e)
-   o Don't use return since return type is void and build error occurs using clang (838161d Makoto Kato)
+   o Don't use return since return type is void and build error occurs
+     using clang (838161d Makoto Kato)
    o Use void casts to suppress some "unchecked return value" warns (7080d55)
-   o rpcgen: Generate regress.gen.[c,h] in build rather than src dir (243386c Ross Lagerwall)
-   o Fix a compiler warning when checking for arc4random_buf linker breakage. (5cb3865)
+   o rpcgen: Generate regress.gen.[c,h] in build rather than src dir
+     (243386c Ross Lagerwall)
+   o Fix a compiler warning when checking for arc4random_buf linker
+     breakage. (5cb3865)
+   o Fix 'make distcheck' by adding regress.gen.[ch] to DISTCLEANFILES
+    (239d834)
+
+   o Fix a c90 warning (c207682)
+   o Fix consts in WIN32-Code/getopt*.[ch] (57abb35)
 
  Bugfixes (locks, synchronization)
    o Missed lock acquire/release in event_base_cancel_single_callback_()
@@ -30,7 +289,8 @@ Changes in version 2.1.4-beta (?? Dec 2013)
  Testing
    o Add tests for evdns_base_resume(). (1cd9ff5 Azat Khuzhin)
    o Fix dns/leak_resume_send_err test. (7e876df Azat Khuzhin)
-   o Add checks for evhttp_connection_get_server() in unit tests. (fbc323b Maxime Henrion)
+   o Add checks for evhttp_connection_get_server() in unit
+     tests. (fbc323b Maxime Henrion)
    o Fix a (failure-only) null dereference in the unit tests (1104d0b)
    o Fix a logic error in test_evbuffer_freeze (7765884)
    o Add missing check to test_evbuffer_file_segment_add_cleanup_cb (eba4506)
@@ -38,15 +298,12 @@ Changes in version 2.1.4-beta (?? Dec 2013)
    o DNS tests: add a missing check (f314900)
    o Finalize tests: add a missing check (82b6956)
    o test_evutil_rtrim: add another missing check. (e193c95)
-   o regress_main: logging all if env EVENT_DEBUG_LOGGING_ALL isset (611e28b Azat Khuzhin)
-   o regress_http: add tests for evhttp_connection_get_addr() (4dd500c Azat Khuzhin)
-
- Bugfixes (core)
-   o If evsel->del() fails, don't leave the evmap in an inconsistent state
-     (9b5a527 Maxime Henrion)
-   o Move event_debug_note_teardown_ before mm_free. (69b5c64)
-   o Check CLOCK_MONOTONIC_* at runtime if needed. (911abf3)
-   o Fix reinit of fds with EV_WRITE but not EV_READ. (ebfd8a8 maksqwe)
+   o regress_main: logging all if env EVENT_DEBUG_LOGGING_ALL isset
+     (611e28b Azat Khuzhin)
+   o regress_http: add tests for evhttp_connection_get_addr() (4dd500c
+     Azat Khuzhin)
+   o Update to the latest version of tinytest (7a80476)
+   o Heap-allocate zlib data structure in regress_zlib tests (4947c18)
 
  Performance tweaks (core)
    o Avoid redundant syscall to make a nonblocking socket nonblocking
@@ -54,56 +311,42 @@ Changes in version 2.1.4-beta (?? Dec 2013)
    o Avoid redundant syscall if making a socket cloexec twice (1f29b18)
    o Avoid redundant invocations of init_extension_functions for IOCP (3b77d62)
 
- Bugfixes (evhttp)
-   o Fix a double close() bug in evhttp when the underlying bufferevent uses
-     BEV_OPT_CLOSE_ON_FREE. (31db8a0 Maxime Henrion)
-   o Fix an unlikely but possible error case for http connections (f22049e)
-   o Avoid racy bufferevent activation (5eb1788 Nate Rosenblum)
-
- Bugfixes on 2.0 (Windows)
-   o Use windows vsnprintf fixup logic on all windows environments (e826f19)
-   o libevent/win32_dealloc() : fix sizeof(pointer) vs sizeof(*pointer) (b8f5980 Frank Denis)
-
- Bugfixes (evutil_secure_rng)
-   o When we seed from /proc/sys/kernel/random/uuid, count it as success (e35b540)
-   o We should return after arc4random_buf() (1ea1f26 Makoto Kato)
-   o Avoid other RNG initialization FS reads when urandom file is specified (9695e9c)
-   o Really remove RNG seeds from the stack (f5ced88)
-   o Fix another arc4random_buf-related warning (e64a2b0)
-
- New APIs (core)
-   o Added event_base_get_num_events() (0fa107d Mobai Zhang)
-   o Add function to fetch underlying ratelimit cfg (4b3d5af Mark Ellzey)
-   o Pass and return const for bufferevent_get_token_bucket_cfg (1c77fbb Mark Ellzey)
-
- New APIs (evhttp)
-   o Add evhttp_connection_get_server(). (a7f82a3 Maxime Henrion)
-   o add a http default content type option (5a5acd9 Nicolas Martyanoff)
-   o http: implement new evhttp_connection_get_addr() api. (0c7f040 Azat Khuzhin)
-
-
  Documentation
    o Document that arc4random is not a great cryptographic PRNG. (6e49696)
    o Small doxygen tweaks (6e67b51)
    o Try another doxygen tweak (ccf432b)
-
- New APIs (evutil_secure_rng)
-   o Add evutil_secure_rng_set_urandom_device_file (2bbb5d7)
+   o Clarify event_base_loop exit conditions (031a803)
+   o Fix a typo (be7bf2c Ondřej Kuzník)
+   o Document deferred eventcb behaviour (13a9a02 Ondřej Kuzník)
+   o Typo fixes from Linus Nordberg (cec62cb, 8cd695b)
+   o Fix duplicate paragraph in evbuffer_ptr documentation (58408ee)
+
+ Code Improvements (coverity)
+   o Fix a pile of coverity warnings in the unit tests (867f401)
+   o Fix coverity warnings in benchmark tools. (ff7f739)
+   o Whoops; fix compilation in bench.c (544cf88)
+   o Remove spurious checks in evrpc.c error cases (coverity) (991b362)
+   o Fix a couple of compilation warnings in regress_http.c (860767e)
+   o Fix even more coverity warnings. (d240328)
+   o Stop checking for inet_aton; we don't use it. (f665d5c)
+   o Add an include to evrpc-internal to fix openbsd compilation warning
+     (5e161c6)
 
  Cleanups
    o Remove an unreachable return statement in minheap-internal.h (e639a9e)
+   o Refactor evmap_{io,signal}_active_() to tolerate bad inputs (974c60e)
+   o Fix needless bufferevent includes in evdns.c (254c04e)
+   o Fix a couple of "#ifdef WIN32" instances (88ecda3)
+   o Remove unneeded declaration in bufferevent-internal.h (4c8ebcd)
 
  Sample code
-   o sample/le-proxy: Fail more gracefully if opening listener fails (44b2491)
-   o sample: drop uri_root from base_url in http-server. (6171e1c Azat Khuzhin)
-
-
-
-
-
-
-
-
+   o le-proxy: Fail more gracefully if opening listener fails (44b2491)
+   o http-server: drop uri_root from base_url in http-server. (6171e1c Azat Khuzhin)
+   o https-client: POST supported, args supported (c5887f7 Alexey Ozeritsky)
+   o https-client: code cleanup (29af65e Alexey Ozeritsky)
+   o https-client: Small tweaks to https-client.c (90786eb)
+   o https-client: Set hostname for SNI extension (by f69m) (d1976f8)
+   o https-client: add a cast to https-client.c (462e6b6)
 
 
 
@@ -377,6 +620,429 @@ INFRASTRUCTURE (Active-later events):
    o Refactor event_persist_closure: raise and extract some common logic
      (bec22b4)
    o Remove the unused bits from EVLIST_ALL (9889a3d)
+||||||| merged common ancestors
+Changes in version 2.0.22-stable (?? Dec 2013)
+
+ (As of 3b77d62829c4393bda6f9105a5d3b73b48a64b71.)
+
+BUGFIXES (evhttp)
+ o fix #73 and fix http_connection_fail_test to catch it (crash fix) (b618204 Greg Hazel)
+ o Avoid racy bufferevent activation (5eb1788 Nate Rosenblum)
+
+BUGFIXES (compilation and portability)
+ o Fix compilation with WIN32_HAVE_CONDITION_VARIABLES enabled (7e45739)
+ o Fix missing AC_PROG_SED on older Autoconfs (9ab2b3f Tay Ray Chuan)
+ o Backport libevent to vanilla Autoconf 2.59 (as used in RHEL5) (74d4c44 Kevin Bowling)
+ o Use AC_CONFIG_HEADERS in place of AM_CONFIG_HEADERS for autmake 1.13 compat (817ea36)
+ o Rename configure.in to configure.ac to appease newer autoconfs (0c79787)
+ o Avoid using top_srcdir in TESTS: new automakes do not like this (a55514e)
+ o Use windows vsnprintf fixup logic on all windows environments (e826f19)
+ o Fix a compiler warning when checking for arc4random_buf linker breakage. (5cb3865)
+ o Fix another arc4random_buf-related warning (e64a2b0)
+
+BUGFIXES (resource leaks/lock errors on error)
+ o Avoid leaking fds on evconnlistener with no callback set (69db261)
+ o Avoid double-close on getsockname error in evutil_ersatz_socketpair (0a822a6)
+ o Fix a locking error in bufferevent_socket_get_dns_error. (0a5eb2e)
+ o libevent/win32_dealloc() : fix sizeof(pointer) vs sizeof(*pointer) (b8f5980 Frank Denis)
+
+BUGFIXES (miscellaneous)
+ o Avoid other RNG initialization FS reads when urandom file is specified (9695e9c, bb52471)
+ o Avoid redundant invocations of init_extension_functions for IOCP (3b77d62)
+
+BUFGIXES (evdns)
+ o Checking request nameserver for NULL, before using it. (5c710c0 Belobrov Andrey)
+ o Fix SEGFAULT after evdns_base_resume if no nameservers installed. (f8d7df8 Azat Khuzhin)
+
+BUGFIXES (evutil_secure_random)
+ o When we seed from /proc/sys/kernel/random/uuid, count it as success (e35b540)
+ o Document that arc4random is not a great cryptographic PRNG. (6e49696)
+ o Add evutil_secure_rng_set_urandom_device_file (2bbb5d7)
+ o Really remove RNG seeds from the stack (f5ced88)
+
+
+DOCUMENTATION FIXES
+ o Fix a mistake in evbuffer_remove() arguments in example http server code (c322c20 Gyepi Sam)
+ o Fix a typo in a comment in buffer.h. Spotted by Alt_F4 (773b0a5)
+
+
+
+Changes in version 2.0.21-stable (18 Nov 2012)
+BUGFIXES:
+ o ssl: Don't discard SSL read event when timeout and read come close together (576b29f)
+ o ssl: Stop looping in "consider_reading" if reading is suspended. (f719b8a Joachim Bauch)
+ o ssl: No need to reserve space if reading is suspended. (1acf2eb Joachim Bauch)
+ o dns: Avoid a memory-leak on OOM in evdns. (73e85dd, f2bff75 George Danchev)
+ o build: Use python2 rather than python (0eb0109 Ross Lagerwall)
+ o build: Compile without warnings on mingw64 (94866c2)
+ o build: Fix compilation on mingw64 with -DUSE_DEBUG (62bd2c4)
+ o build: Make rpcgen_wrapper.sh work on systems without a "python2" binary (f3009e4)
+ o iocp: Close IOCP listener socket on free when LEV_OPT_CLOSE_ON_FREE is set (cb853ea Juan Pablo Fernandez)
+ o core: Avoid crash when event_pending() called with no event_base set on event (e3cccf3)
+ o misc: remove stray 'x' so print_err will compile when uncommented (ac35650 Patrick Pelletier)
+ o tests: Fix renegotiation test to work around openssl 1.0.1 bug (c2f3086)
+ o tests: Warn when openssl version in unit test mismatches compiled version. (ac009f9)
+
+
+Changes in version 2.0.20-stable (23 Aug 2012)
+BUGFIXES:
+ o core: Make event_pending() threadsafe. (be7a95c Simon Liu)
+ o win32: avoid crash when waiting forever on zero fds. (160e58b)
+ o evhttp: Fix a memory leak on error in evhttp_uriencode (11c8b31)
+ o evbuffer: Avoid possible needless call to writev. Found by coverity. (6a4ec5c)
+ o evdns: memset sockaddr_in before using it. Found by coverity. (a1a0e67)
+ o evhttp: Check more setsockopt return values when binding sockets. Found by coverity (a0912e3)
+ o evdns: Avoid segfault on weird timeout during name lookup. (dc32077 Greg Hazel)
+ o bufferevent_ssl: Correctly invoke callbacks when a SSL bufferevent reads some and then blocks. (606ac43)
+
+
+PORTABILITY FIXES:
+ o check for arc4random_buf at runtime, on OS X (bff5f94 Greg Hazel)
+ o Correctly check for arc4random_buf (fcec3e8 Sebastian Hahn)
+ o Add explicit AC_PROG_SED to configure.in so all autoconfs will expose $(SED) (ca80ea6)
+
+BUILD FIXES:
+ o Add GCC annotations so that the vsprintf functions get checked properly (117e327)
+ o Fix an unused variable warning on *BSD. (c0720c1)
+
+UNIT TEST FIXES:
+ o Fix a couple of memory leaks (found with Valgrind). (3b2529a Ross Lagerwall)
+ o Remove deadcode in http regression tests. Found by coverity. (5553346)
+ o Fix possible uninitialized read in dns regression tests. Found by coverity. (2259777)
+ o Set umask before calling mkstemp in unit tests. Found by coverity (f1ce15d)
+ o Fix various check-after-dereference issues in unit tests: found by coverity (4f3732d)
+ o Fix resource leaks in the unit tests; found by coverity (270f279)
+ o Add some missing null checks to unit tests; found by coverity (f021c3d)
+ o Avoid more crashes/bad calls in unit tests; found by coverity (3cde5bf)
+ o Remove unused variable; spotted by coverity (6355b2a)
+ o Add checks to various return values in unit tests. Found by coverity (b9e7329)
+ o Move assignment outside tt_assert in ssl unit tests. Appeases coverity. (a2006c0)
+
+
+
+Changes in version 2.0.19-stable (3 May 2012)
+BUGFIXES (CORE):
+ o Refactor event_persist_closure: raise and extract some common logic (bec22b4)
+ o If time has jumped so we'd reschedule a periodic event in the past, schedule it for the future instead (dfd808c)
+ o If a higher-priority event becomes active, don't continue running events of the current priority. (2bfda40)
+
+BUGFIXES (SSL):
+ o Fixed potential double-readcb execution with openssl bufferevents. (4e62cd1 Mark Ellzey)
+
+BUGFIXES (DNS):
+ o Cancel a probe request when the server is freed, and ignore cancelled probe callbacks (94d2336 Greg Hazel)
+ o Remove redundant DNS_ERR_CANCEL check, move comment (46b8060 Greg Hazel)
+ o When retransmitting a timed-out DNS request, pick a fresh nameserver. (3d9e52a)
+
+DOCUMENTATION FIXES:
+ o Fix a typo in the bufferevent documentation (98e9119)
+ o Add missing ) to changelog; spotted by rransom (4c7ee6b)
+ o Fix the website URL in the readme (f775521)
+
+COMPILATION FIXES:
+ o Fix a compilation error with MSVC 2005 due to use of mode_t (336dcae)
+ o Configure with gcc older than 2.95 (4a6fd43 Sebastian Hahn)
+ o Generate event-config.h with a single sed script (30b6f88 Zack Weinberg)
+
+FORWARD-COMPATIBILITY:
+ o Backport: provide EVENT_LOG_* names, and deprecate _EVENT_LOG_* (d1a03b2)
+
+TESTING/DEBUGGING SUPPORT:
+ o dns-example.c can now take a resolv.conf file on the commandline (6610fa5)
+ o Make some evdns.c debug logs more verbose (d873d67)
+ o Work-around a stupid gcov-breaking bug in OSX 10.6 (b3887cd)
+
+
+
+Changes in version 2.0.18-stable (22 Mar 2012)
+BUGFIXES (core):
+ o Make uses of open() close-on-exec safe by introducing an internal evutil_open_closeonexec. (d2b5f72 Ross Lagerwall, 03dce42)
+
+BUGFIXES (kqueue):
+ o Properly zero the kevent in kq_setup_kevent() (c2c7b39 Sebastian Hahn)
+
+BUILD FIXES:
+ o Added OPENSSL_LDFLAGS env variable which is appended to SSL checks. (9278196 Mark Ellzey)
+ o Changed OPENSSL_LDFLAGS to OPENSSL_LIBADD (2d67b63 Mark Ellzey)
+ o Don't do clang version detection when disabling some flags (083296b Sebastian Hahn)
+
+BUGFIXES (dns):
+ o Stop crashing in evdns when nameserver probes give a weird error (bec5068)
+
+
+Changes in version 2.0.17-stable (10 Feb 2012)
+
+BUGFIXES (core):
+ o Be absolutely sure to clear pncalls before leaving event_signal_closure (11f36a5)
+ o check for sysctl before we use it (358c745 Mike Frysinger)
+ o Remove bogus casts of socket to int before calling ev_callback (f032516)
+ o Make evconnlistener work around bug in older Linux when getting nmapped (ecfc720)
+ o Fix a list corruption bug when using event_reinit() with signals present (6e41cdc)
+ o Fix a fd leak in event_reinit() (3f18ad1)
+ o Do a memberwise comparison of threading function tables (c94a5f2 Nate R)
+ o Use C-style comments in C source files (for compatibility with compilers such as xlc on AIX). (d84d917 Greg Hewgill)
+ o Avoid crash when freeing event_iocp and using event_set_mem_functions (19715a6)
+ o In the kqueue backend, do not report EBADF as an EV_READ (5d7bfa1 Nicholas Marriott)
+
+BUGFIXES (evbuffer and bufferevents):
+ o Fix behavior of evbuffer_peek(buf,-1,NULL,NULL,0) (c986f23 Zack Weinberg)
+ o Loop on filtering SSL reads until we are blocked or exhausted. (5b4b812)
+
+BUGFIXES (evhttp):
+ o Force strict validation of HTTP version in response. (790f6b3 Catalin Patulea)
+
+BUGFIXES (evdns):
+ o evdns: fix a bug in circular-queue implementation (d6094b1)
+
+BUILD FIXES:
+ o Fix a silly compilation error with the sun compiler (1927776 Colin Watt)
+ o Suppress a gcc warning from ignoring fwrite return in http-sample.c (7206e8c)
+
+DOCUMENTATION FIXES:
+ o Slightly clarify evbuffer_peek documentation (7bbf6ca)
+ o Update copyright notices to 2012 (e49e289)
+
+NEW APIS:
+ o Backport evhttp_connection_get_bufferevent to Libevent 2.0 (da70fa7 Arno Bakker)
+
+TESTS AND TEST FIXES:
+ o Fix a race condition in the dns/bufferevent_connect_hostname test. (cba48c7)
+ o Add function to check referential integrity of an event_base (27737d5)
+ o Check event_base correctness at end of each unit test (3312b02)
+ o Workaround in the unit tests for an apparent epoll bug in Linux 3.2 (dab9187)
+ o Better workaround for Linux 3.2 edge-triggered epoll bug (9f9e259)
+
+Changes in version 2.0.16-stable (18 Nov 2011)
+BUGFIXES (core):
+ o More detailed message in case of libevent self-debugging failure. (9e6a4ef Leonid Evdokimov)
+ o epoll: close fd on alloc fail at initialization (1aee718 Jamie Iles)
+ o Fix compile warning from saying event2/*.h inside a comment (447b0ba)
+ o Warn when unable to construct base because of failing make_base_notifiable (4e797f3)
+ o Don't try to make notifiable event_base when no threading fns are configured (e787413)
+
+BUGFIXES (evbuffer):
+ o unit test for remove_buffer bug (90bd620 Greg Hazel)
+ o Fix an evbuffer crash in evbuffer_remove_buffer() (c37069c)
+
+BUGFIXES (bufferevent_openssl):
+ o Refactor amount-to-read calculations in buffervent_ssl consider_reading() (a186e73 Mark Ellzey)
+ o Move SSL rate-limit enforcement into bytes_to_read() (96c562f)
+ o Avoid spinning on OpenSSL reads (2aa036f Mark Ellzey)
+
+BUGFIXES (dns)
+ o Empty DNS reply with OK status is another way to say NODATA. (21a08d6 Leonid Evdokimov)
+
+TESTING:
+ o Tests for 94fba5b and f72e8f6 (d58c15e Leonid Evdokimov)
+ o Test for commit aff6ba1 (f7841bf Leonid Evdokimov)
+ o Style and comment tweaks for dns/leak* tests (5e42202)
+ o improve test to remove at least one buffer from src (7eb52eb Greg Hazel)
+
+DOCUMENTATION:
+ o Add note about evhttp_send_reply_end to its doxygen (724bfb5)
+ o Update copyright dates to 2011. (3c824bd)
+ o Fix typo in whatsnew-2.0.txt (674bc6a Mansour Moufid)
+ o Improve win32 behavior of dns-sample.c code (a3f320e Gisle Vanem)
+
+
+
+Changes in version 2.0.15-stable (12 Oct 2011)
+BUGFIXES (DNS):
+ o DNS: add ttl for negative answers using RFC 2308 idea. (f72e8f6 Leonid Evdokimov)
+ o Add DNS_ERR_NODATA error code to handle empty replies. (94fba5b Leonid Evdokimov)
+
+BUFGIXES (bufferevents and evbuffers):
+ o Make evbuffer callbacks get the right n_added value after evbuffer_add (1ef1f68 Alex)
+ o Prefer mmap to sendfile unless a DRAINS_TO_FD flag is set. Allows add_file to work with SSL. (0ba0af9)
+
+BUGFIXES (event loop):
+ o When a signal callback is activated to run multiple times, allow event_base_loopbreak to work even before they all have run. (4e8eb6a)
+
+DOCUMENTATION FIXES:
+ o Fix docstring in dns.h (2b6eae5 Leonid Evdokimov)
+ o refer to non-deprecated evdns functions in comments (ba5c27d Greg Hazel)
+
+BUILD AND TESTING FIXES:
+ o le-proxy and regress depend on openssl directly (9ae061a Sergey Avseyev)
+ o Use _SOURCES, not _sources, in sample/Makefile.am (7f82382)
+ o Fixed compiler warnings for unchecked read/write calls. (c3b62fd Mark Ellzey)
+ o Make write-checking fixes use tt_fail_perror (2b76847)
+ o Fix some "value never used" warnings with gcc 4.6.1 (39c0cf7)
+
+
+
+Changes in version 2.0.14-stable (31 Aug 2011)
+BUGFIXES (bufferevents and evbuffers):
+ o Propagate errors on the underlying bufferevent to the user. (4a34394 Joachim Bauch)
+ o Ignore OpenSSL deprecation warnings on OS X (5d1b255 Sebastian Hahn)
+ o Fix handling of group rate limits under 64 bytes of burst (6d5440e)
+ o Solaris sendfile: correctly detect amount of data sent (643922e Michael Herf)
+ o Make rate limiting work with common_timeout logic (5b18f13)
+ o clear read watermark on underlying bufferevent when creating filtering bev to fix potentially failing fragmented ssl handshakes (54f7e61 Joachim Bauch)
+
+BUGFIXES (IOCP):
+ o IOCP: don't launch reads or writes on an unconnected socket (495c227)
+ o Make IOCP rate-limiting group support stricter and less surprising. (a98da7b)
+ o Have test-ratelim.c support IOCP (0ff2c5a)
+ o Make overlapped reads result in evbuffer callbacks getting invoked (6acfbdd)
+ o Correctly terminate IO on an async bufferevent on bufferevent_free (e6af35d)
+
+BUGFIXES (other):
+ o Fix evsig_dealloc memory leak with debugging turned on. (9b724b2 Leonid Evdokimov)
+ o Fix request_finished memory leak with debugging turned on. (aff6ba1 Leonid Evdokimov)
+
+BUILD AND TESTING FIXES:
+ o Allow OS-neutral builds for platforms where some versions have arc4random_buf (b442302 Mitchell Livingston)
+ o Try to fix 'make distcheck' errors when building out-of-tree (04656ea Dave Hart)
+ o Clean up some problems identified by Coverity. (7c11e51 Harlan Stenn)
+
+
+Changes in version 2.0.13-stable (18 Jul 2011)
+BUGFIXES
+ o Avoid race-condition when initializing global locks (b683cae)
+ o Fix bug in SSL bufferevents backed by a bev with a write high-watermarks (e050703 Joachim Bauch)
+ o Speed up invoke_callbacks on evbuffers when there are no callbacks (f87f568 Mark Ellzey)
+ o Avoid a segfault when all methods are disabled or broken (27ce38b)
+ o Fix incorrect results from evbuffer_search_eol(EOL_LF) (4461f1a)
+ o Add some missing checks for mm_calloc failures (89d5e09)
+ o Replace an assertion for event_base_free(NULL) with a check-and-warn (09fe97d)
+ o Report kqueue ebadf, epipe, and eperm as EV_READ events (1fd34ab)
+ o Check if the `evhttp_new_object' function in `http.c' returns NULL. (446cc7a Mansour Moufid)
+ o Use the correct printf args when formatting size_t (3203f88)
+ o Complain if the caller tries to change threading cbs after setting them (cb6ecee)
+
+DOCUMENTATION FIXES AND IMPROVEMENTS
+ o Revise the event/evbuffer/bufferevent doxygen for clarity and accuracy (2888fac)
+ o Update Doxyfile to produce more useful output (aea0555)
+
+TEST FIXES
+ o Fix up test_evutil_snprintf (caf695a)
+ o Fix tinytest invocation from windows shell (57def34 Ed Day)
+
+BUILD FIXES
+ o Use AM_CPPFLAGS in sample/Makefile.am, not AM_CFLAGS (4a5c82d)
+ o Fix select.c compilation on systems with no NFDBITS (49d1136)
+ o Fix a few warnings on OpenBSD (8ee9f9c Nicholas Marriott)
+ o Don't break when building tests from git without python installed (b031adf)
+ o Don't install event_rpcgen.py when --disable-libevent-install is used (e23cda3 Harlan Stenn)
+ o Fix AIX build issue with TAILQ_FOREACH definition (e934096)
+
+
+Changes in version 2.0.12-stable (4 Jun 2011)
+BUGFIXES
+ o Fix a warn-and-fail bug in kqueue by providing kevent() room to report errors (28317a0)
+ o Fix an assert-inducing fencepost bug in the select backend (d90149d)
+ o Fix failing http assertion introducd in commit 0d6622e (0848814 Kevin Ko)
+ o Fix a bug that prevented us from configuring IPv6 nameservers. (74760f1)
+ o Prevent size_t overflow in evhttp_htmlescape. (06c51cd Mansour Moufid)
+ o Added several checks for under/overflow conditions in evhttp_handle_chunked_read (a279272 Mark Ellzey)
+ o Added overflow checks in evhttp_read_body and evhttp_get_body (84560fc Mark Ellzey)
+
+DOCUMENTATION:
+ o Add missing words to EVLOOP_NONBLOCK documentation (9556a7d)
+
+BUILD FIXES
+ o libssl depends on libcrypto, not the other way around. (274dd03 Peter Rosin)
+ o Libtool brings in the dependencies of libevent_openssl.la automatically (7b819f2 Peter Rosin)
+ o Use OPENSSL_LIBS in Makefile.am (292092e Sebastian Hahn)
+ o Move the win32 detection in configure.in (ceb03b9 Sebastian Hahn)
+ o Correctly detect openssl on windows (6619385 Sebastian Hahn)
+ o Fix a compile warning with zlib 1.2.4 and 1.2.5 (5786b91 Sebastian Hahn)
+ o Fix compilation with GCC 2, which had no __builtin_expect (09d39a1 Dave Hart)
+ o Fix new warnings from GCC 4.6 (06a714f)
+ o Link with -lshell32 and -ladvapi32 on Win32. (86090ee Peter Rosin)
+ o Make the tests build when OpenSSL is not available. (07c41be Peter Rosin)
+ o Bring in the compile script from automake, if needed. (f3c7a4c Peter Rosin)
+ o MSVC does not provide S_ISDIR, so provide it manually. (70be7d1 Peter Rosin)
+ o unistd.h and sys/time.h might not exist. (fe93022 Peter Rosin)
+ o Make sure TINYTEST_LOCAL is defined when building tinytest.c (8fa030c Peter Rosin)
+ o Fix winsock2.h #include issues with MSVC (3d768dc Peter Rosin)
+ o Use evutil_gettimeofday instead of relying on the system gettimeofday. (0de87fe Peter Rosin)
+ o Always use evutil_snprintf, even if OS provides it (d1b2d11 Sebastian Hahn)
+ o InitializeCriticalSectionAndSpinCount requires _WIN32_WINNT >= 0x0403. (816115a Peter Rosin)
+ o cygwin: make it possible to build DLLs (d54d3fc)
+
+
+
+Changes in version 2.0.11-stable (27 Apr 2011)
+  [Autogenerated from the Git log, sorted and cleaned by hand.]
+BUGFIXES:
+ o Fix evport handling of POLLHUP and POLLERR (b42ce4b)
+ o Fix compilation on Windows with NDEBUG (cb8059d)
+ o Check for POLLERR, POLLHUP and POLLNVAL for Solaris event ports (0144886 Trond Norbye)
+ o Detect and handle more allocation failures. (666b096 Jardel Weyrich)
+ o Use event_err() only if the failure is truly unrecoverable. (3f8d22a Jardel Weyrich)
+ o Handle resize failures in the select backend better. (83e805a)
+ o Correctly free selectop fields when select_resize fails in select_init (0c0ec0b)
+ o Make --enable-gcc-warnings a no-op if not using gcc (3267703)
+ o Fix a type error in our (unused) arc4random_stir() (f736198)
+ o Correctly detect and stop non-chunked http requests when the body is too long (63a715e)
+ o Have event_base_gettimeofday_cached() always return wall-clock time (a459ef7)
+ o Workaround for http crash bug 3078187 (5dc5662 Tomash Brechko)
+ o Fix incorrect assertions and possible use-after-free in evrpc_free() (4b8f02f Christophe Fillot)
+ o Reset outgoing http connection when read data in idle state. (272823f Tomash Brechko)
+ o Fix subtle recursion in evhttp_connection_cb_cleanup(). (218cf19 Tomash Brechko)
+ o Fix the case when failed evhttp_make_request() leaved request in the queue. (0d6622e Tomash Brechko)
+ o Fix a crash bug in evdns server circular list code (00e91b3)
+ o Handle calloc failure in evdns. (Found by Dave Hart) (364291e)
+ o Fix a memory leak on win32 socket->event map. (b4f89f0)
+ o Add a forgotten NULL check to evhttp_parse_headers (12311ff Sebastian Hahn)
+ o Fix possible NULL-deref in evdns_cancel_request (5208544 Sebastian Hahn)
+
+PORTABILITY:
+ o Fall back to sscanf if we have no other way to implement strtoll (453317b)
+ o Build correctly on platforms without sockaddr_storage (9184563)
+ o Try to build correctly on platforms with no IPv6 support (713c254)
+ o Build on systems without AI_PASSIVE (cb92113)
+ o Fix http unit test on non-windows platforms without getaddrinfo (6092f12)
+ o Do not check for gethostbyname_r versions if we have getaddrinfo (c1260b0)
+ o Include arpa/inet.h as needed on HPUX (10c834c Harlan Stenn)
+ o Include util-internal.h as needed to build on platforms with no sockaddr_storage (bbf5515 Harlan Stenn)
+ o Check for getservbyname even if not on win32. (af08a94 Harlan Stenn)
+ o Add -D_OSF_SOURCE to fix hpux builds (0b33479 Harlan Stenn)
+ o Check for allocation failures in apply_socktype_protocol_hack (637d17a)
+ o Fix the check for multicast or broadcast addresses in evutil_check_interfaces (1a21d7b)
+ o Avoid a free(NULL) if out-of-memory in evdns_getaddrinfo. Found by Dave Hart (3417f68)
+
+DEFENSIVE PROGRAMMING:
+ o Add compile-time check for AF_UNSPEC==PF_UNSPEC (3c8f4e7)
+
+BUGS IN TESTS:
+ o Fix test.sh output on solaris (b4f89b6 Dave Hart)
+ o Make test-eof fail with a timeout if we never get an eof. (05a2c22 Harlan Stenn)
+ o Use %s with printf in test.sh (039b9bd)
+ o Add an assert to appease clang's static analyzer (b0ff7eb Sebastian Hahn)
+ o Add a forgotten return value check in the unit tests (3819b62 Sebastian Hahn)
+ o Actually send NULL request in http_bad_request_test (b693c32 Sebastian Hahn)
+ o add some (void) casts for unused variables (65707d7 Sebastian Hahn)
+ o Refactor test_getaddrinfo_async_cancel_stress() (48c44a6 Sebastian Hahn)
+ o Be nice and "handle" error return values in sample code (4bac793 Sebastian Hahn)
+ o Check return value of evbuffer_add_cb in tests (93a1abb Sebastian Hahn)
+ o Remote some dead code from dns-example.c (744c745 Sebastian Hahn)
+ o Zero a struct sockaddr_in before using it (646f9fe Sebastian Hahn)
+
+BUILD FIXES:
+ o Fix warnings about AC_LANG_PROGRAM usage (f663112 Sebastian Hahn)
+ o Skip check for zlib if we have no zlib.h (a317c06 Harlan Stenn)
+ o Fix autoconf bracket issues; make check for getaddrinfo include netdb.h (833e5e9 Harlan Stenn)
+ o Correct an AM_CFLAGS to an AM_CPPFLAGS in test/Makefile.am (9c469db Dave Hart)
+ o Fix make distcheck & installation of libevent 1 headers (b5a1f9f Dave Hart)
+ o Fix compilation under LLVM/clang with --enable-gcc-warnings (ad9ff58 Sebastian Hahn)
+
+FEATURES:
+ o Make URI parser able to tolerate nonconformant URIs. (95060b5)
+
+DOCUMENTATION:
+ o Clarify event_set_mem_functions doc (926f816)
+ o Correct evhttp_del_accept_socket documentation on whether socket is closed (f665924)
+ o fix spelling mistake in whatsnew-2.0.txt (deb2f73)
+ o Fix sample/http-server ipv6 fixes (eb692be)
+ o Comment internal headers used in sample code. (4eb281c)
+ o Be explicit about how long event loops run in event.h documentation (f95bafb)
+ o Add comment to configure.in to explain gc-sections test logic (c621359)
+ o Fix a couple of memory leaks in samples/http-server.c. Found by Dave Hart. (2e9f665)
+
+
 
 BUILD IMPROVEMENTS:
  Libevent 2.1.2-alpha modernizes Libevent's use of autotools, and makes
diff --git a/contrib/ntp/sntp/libevent/Makefile.am b/contrib/ntp/sntp/libevent/Makefile.am
index 58f1f01..3053cc0 100644
--- a/contrib/ntp/sntp/libevent/Makefile.am
+++ b/contrib/ntp/sntp/libevent/Makefile.am
@@ -38,7 +38,7 @@ RELEASE = -release 2.1
 #
 # Once an RC is out, DO NOT MAKE ANY ABI-BREAKING CHANGES IN THAT SERIES
 # UNLESS YOU REALLY REALLY HAVE TO.
-VERSION_INFO = 3:0:0
+VERSION_INFO = 5:0:0
 
 # History:          RELEASE    VERSION_INFO
 #  2.0.1-alpha --     2.0        1:0:0
@@ -67,6 +67,8 @@ VERSION_INFO = 3:0:0
 #  2.1.1-alpha --     2.1        1:0:0
 #  2.1.2-alpha --     2.1        1:0:0 (should have been 2:0:1)
 #  2.1.3-alpha --     2.1        3:0:0 (ABI changed slightly)
+#  2.1.4-alpha --     2.1        4:0:0 (ABI changed slightly)
+#  2.1.5-beta  --     2.1        5:0:0 (ABI changed slightly)
 
 # ABI version history for this package effectively restarts every time
 # we change RELEASE.  Version 1.4.x had RELEASE of 1.4.
diff --git a/contrib/ntp/sntp/libevent/Makefile.in b/contrib/ntp/sntp/libevent/Makefile.in
index 463ae8c..4caff8f 100644
--- a/contrib/ntp/sntp/libevent/Makefile.in
+++ b/contrib/ntp/sntp/libevent/Makefile.in
@@ -66,15 +66,14 @@ host_triplet = @host@
 @PTHREADS_TRUE@am__append_2 = libevent_pthreads.pc
 @OPENSSL_TRUE@am__append_3 = libevent_openssl.la
 @OPENSSL_TRUE@am__append_4 = libevent_openssl.pc
-noinst_PROGRAMS = $(am__EXEEXT_3) $(am__EXEEXT_5)
+noinst_PROGRAMS = $(am__EXEEXT_4) $(am__EXEEXT_6)
 EXTRA_PROGRAMS = $(am__EXEEXT_1)
-DIST_COMMON = README $(am__configure_deps) \
-	$(am__dist_bin_SCRIPTS_DIST) $(am__include_HEADERS_DIST) \
-	$(am__include_event2_HEADERS_DIST) $(am__noinst_HEADERS_DIST) \
-	$(srcdir)/Makefile.am $(srcdir)/Makefile.in \
-	$(srcdir)/config.h.in $(srcdir)/evconfig-private.h.in \
-	$(srcdir)/include/include.am $(srcdir)/libevent.pc.in \
-	$(srcdir)/libevent_openssl.pc.in \
+DIST_COMMON = $(am__configure_deps) $(am__dist_bin_SCRIPTS_DIST) \
+	$(am__include_HEADERS_DIST) $(am__include_event2_HEADERS_DIST) \
+	$(am__noinst_HEADERS_DIST) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in $(srcdir)/config.h.in \
+	$(srcdir)/evconfig-private.h.in $(srcdir)/include/include.am \
+	$(srcdir)/libevent.pc.in $(srcdir)/libevent_openssl.pc.in \
 	$(srcdir)/libevent_pthreads.pc.in $(srcdir)/sample/include.am \
 	$(srcdir)/test/include.am $(top_srcdir)/configure ChangeLog \
 	build-aux/compile build-aux/config.guess build-aux/config.sub \
@@ -86,33 +85,33 @@ DIST_COMMON = README $(am__configure_deps) \
 @OPENSSL_TRUE@	sample/hostcheck.h \
 @OPENSSL_TRUE@	sample/openssl_hostname_validation.h
 
-@BUILD_REGRESS_TRUE@am__append_8 = $(TESTPROGRAMS)
-@BUILD_REGRESS_TRUE@am__append_9 = test/regress
-@BUILD_REGRESS_TRUE@am__append_10 = test/regress.gen.c test/regress.gen.h
-@PTHREADS_TRUE@am__append_11 = libevent_pthreads.la
-@BUILD_WIN32_TRUE@am__append_12 = test/regress_iocp.c
-@OPENSSL_TRUE@am__append_13 = test/regress_ssl.c
-@OPENSSL_TRUE@am__append_14 = $(OPENSSL_INCS)
-@OPENSSL_TRUE@am__append_15 = libevent_openssl.la $(OPENSSL_LIBS) ${OPENSSL_LIBADD}
-@STRLCPY_IMPL_TRUE@am__append_16 = strlcpy.c
-@SELECT_BACKEND_TRUE@am__append_17 = select.c
-@POLL_BACKEND_TRUE@am__append_18 = poll.c
-@DEVPOLL_BACKEND_TRUE@am__append_19 = devpoll.c
-@KQUEUE_BACKEND_TRUE@am__append_20 = kqueue.c
-@EPOLL_BACKEND_TRUE@am__append_21 = epoll.c
-@EVPORT_BACKEND_TRUE@am__append_22 = evport.c
-@SIGNAL_SUPPORT_TRUE@am__append_23 = signal.c
-@INSTALL_LIBEVENT_FALSE@am__append_24 = $(EVENT1_HDRS)
+@BUILD_SAMPLES_TRUE@am__append_8 = $(SAMPLES)
+@BUILD_REGRESS_TRUE@am__append_9 = $(TESTPROGRAMS)
+@BUILD_REGRESS_TRUE@am__append_10 = test/regress
+@BUILD_REGRESS_TRUE@am__append_11 = test/regress.gen.c test/regress.gen.h
+@PTHREADS_TRUE@am__append_12 = libevent_pthreads.la
+@BUILD_WIN32_TRUE@am__append_13 = test/regress_iocp.c
+@OPENSSL_TRUE@am__append_14 = test/regress_ssl.c
+@OPENSSL_TRUE@am__append_15 = $(OPENSSL_INCS)
+@OPENSSL_TRUE@am__append_16 = libevent_openssl.la $(OPENSSL_LIBS) ${OPENSSL_LIBADD}
+@STRLCPY_IMPL_TRUE@am__append_17 = strlcpy.c
+@SELECT_BACKEND_TRUE@am__append_18 = select.c
+@POLL_BACKEND_TRUE@am__append_19 = poll.c
+@DEVPOLL_BACKEND_TRUE@am__append_20 = devpoll.c
+@KQUEUE_BACKEND_TRUE@am__append_21 = kqueue.c
+@EPOLL_BACKEND_TRUE@am__append_22 = epoll.c
+@EVPORT_BACKEND_TRUE@am__append_23 = evport.c
+@SIGNAL_SUPPORT_TRUE@am__append_24 = signal.c
+@INSTALL_LIBEVENT_FALSE@am__append_25 = $(EVENT1_HDRS)
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/ac_backport_259_ssizet.m4 \
+	$(top_srcdir)/m4/acx_pthread.m4 \
 	$(top_srcdir)/m4/libevent_openssl.m4 \
 	$(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \
 	$(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \
 	$(top_srcdir)/m4/lt~obsolete.m4 \
-	$(top_srcdir)/m4/ntp_pkg_config.m4 \
-	$(top_srcdir)/m4/openldap-thread-check.m4 \
-	$(top_srcdir)/m4/openldap.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/ntp_pkg_config.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
@@ -250,14 +249,15 @@ am__EXEEXT_3 = sample/dns-example$(EXEEXT) \
 	sample/event-read-fifo$(EXEEXT) sample/hello-world$(EXEEXT) \
 	sample/http-server$(EXEEXT) sample/signal-test$(EXEEXT) \
 	sample/time-test$(EXEEXT) $(am__EXEEXT_2)
-am__EXEEXT_4 = test/bench$(EXEEXT) test/bench_cascade$(EXEEXT) \
+@BUILD_SAMPLES_TRUE@am__EXEEXT_4 = $(am__EXEEXT_3)
+am__EXEEXT_5 = test/bench$(EXEEXT) test/bench_cascade$(EXEEXT) \
 	test/bench_http$(EXEEXT) test/bench_httpclient$(EXEEXT) \
 	test/test-changelist$(EXEEXT) test/test-dumpevents$(EXEEXT) \
 	test/test-eof$(EXEEXT) test/test-closed$(EXEEXT) \
 	test/test-fdleak$(EXEEXT) test/test-init$(EXEEXT) \
 	test/test-ratelim$(EXEEXT) test/test-time$(EXEEXT) \
 	test/test-weof$(EXEEXT) test/regress$(EXEEXT)
-@BUILD_REGRESS_TRUE@am__EXEEXT_5 = $(am__EXEEXT_4)
+@BUILD_REGRESS_TRUE@am__EXEEXT_6 = $(am__EXEEXT_5)
 PROGRAMS = $(noinst_PROGRAMS)
 am__dirstamp = $(am__leading_dot)dirstamp
 am_sample_dns_example_OBJECTS = sample/dns-example.$(OBJEXT)
@@ -343,7 +343,7 @@ am_test_regress_OBJECTS = test/test_regress-regress.$(OBJEXT) \
 	test/test_regress-tinytest.$(OBJEXT) $(am__objects_12) \
 	$(am__objects_13) $(am__objects_14) $(am__objects_15)
 test_regress_OBJECTS = $(am_test_regress_OBJECTS)
-am__DEPENDENCIES_3 = $(am__append_11)
+am__DEPENDENCIES_3 = $(am__append_12)
 @OPENSSL_TRUE@am__DEPENDENCIES_4 = libevent_openssl.la \
 @OPENSSL_TRUE@	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
 test_regress_DEPENDENCIES = $(am__DEPENDENCIES_1) libevent.la \
@@ -568,8 +568,9 @@ PACKAGE_URL = @PACKAGE_URL@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 PATH_SEPARATOR = @PATH_SEPARATOR@
 PKG_CONFIG = @PKG_CONFIG@
+PTHREAD_CC = @PTHREAD_CC@
 PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
-PTHREAD_LIBS = @PTHREAD_LIBS@ $(am__append_11)
+PTHREAD_LIBS = @PTHREAD_LIBS@ $(am__append_12)
 RANLIB = @RANLIB@
 SED = @SED@
 SET_MAKE = @SET_MAKE@
@@ -584,6 +585,7 @@ abs_top_srcdir = @abs_top_srcdir@
 ac_ct_AR = @ac_ct_AR@
 ac_ct_CC = @ac_ct_CC@
 ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+acx_pthread_config = @acx_pthread_config@
 am__include = @am__include@
 am__leading_dot = @am__leading_dot@
 am__quote = @am__quote@
@@ -663,7 +665,7 @@ RELEASE = -release 2.1
 #
 # Once an RC is out, DO NOT MAKE ANY ABI-BREAKING CHANGES IN THAT SERIES
 # UNLESS YOU REALLY REALLY HAVE TO.
-VERSION_INFO = 3:0:0
+VERSION_INFO = 5:0:0
 
 # History:          RELEASE    VERSION_INFO
 #  2.0.1-alpha --     2.0        1:0:0
@@ -692,6 +694,8 @@ VERSION_INFO = 3:0:0
 #  2.1.1-alpha --     2.1        1:0:0
 #  2.1.2-alpha --     2.1        1:0:0 (should have been 2:0:1)
 #  2.1.3-alpha --     2.1        3:0:0 (ABI changed slightly)
+#  2.1.4-alpha --     2.1        4:0:0 (ABI changed slightly)
+#  2.1.5-beta  --     2.1        5:0:0 (ABI changed slightly)
 
 # ABI version history for this package effectively restarts every time
 # we change RELEASE.  Version 1.4.x had RELEASE of 1.4.
@@ -744,12 +748,12 @@ noinst_HEADERS = $(am__append_5) $(am__append_7) test/regress.h \
 	iocp-internal.h ipv6-internal.h kqueue-internal.h \
 	log-internal.h minheap-internal.h mm-internal.h \
 	ratelim-internal.h ratelim-internal.h strlcpy-internal.h \
-	time-internal.h util-internal.h $(am__append_24)
+	time-internal.h util-internal.h $(am__append_25)
 CLEANFILES = test/rpcgen-attempted
 DISTCLEANFILES = test/test-script.sh test/regress.gen.c \
 	test/regress.gen.h *~ libevent.pc \
 	./include/event2/event-config.h
-BUILT_SOURCES = $(am__append_10) include/event2/event-config.h
+BUILT_SOURCES = $(am__append_11) include/event2/event-config.h
 include_event2dir = $(includedir)/event2
 EVENT2_EXPORT = \
 	include/event2/buffer.h \
@@ -853,14 +857,14 @@ test_regress_SOURCES = test/regress.c test/regress.gen.c \
 	test/regress_minheap.c test/regress_rpc.c \
 	test/regress_testutils.c test/regress_testutils.h \
 	test/regress_util.c test/tinytest.c $(regress_thread_SOURCES) \
-	$(regress_zlib_SOURCES) $(am__append_12) $(am__append_13)
+	$(regress_zlib_SOURCES) $(am__append_13) $(am__append_14)
 @BUILD_WIN32_TRUE@regress_thread_SOURCES = test/regress_thread.c
 @PTHREADS_TRUE@regress_thread_SOURCES = test/regress_thread.c
 @ZLIB_REGRESS_TRUE@regress_zlib_SOURCES = test/regress_zlib.c
 test_regress_LDADD = $(LIBEVENT_GC_SECTIONS) libevent.la \
-	$(PTHREAD_LIBS) $(ZLIB_LIBS) $(am__append_15)
+	$(PTHREAD_LIBS) $(ZLIB_LIBS) $(am__append_16)
 test_regress_CPPFLAGS = $(AM_CPPFLAGS) $(PTHREAD_CFLAGS) \
-	$(ZLIB_CFLAGS) -Itest $(am__append_14)
+	$(ZLIB_CFLAGS) -Itest $(am__append_15)
 test_regress_LDFLAGS = $(PTHREAD_CFLAGS)
 test_bench_SOURCES = test/bench.c
 test_bench_LDADD = $(LIBEVENT_GC_SECTIONS) libevent.la
@@ -872,17 +876,17 @@ test_bench_httpclient_SOURCES = test/bench_httpclient.c
 test_bench_httpclient_LDADD = $(LIBEVENT_GC_SECTIONS) libevent_core.la
 @BUILD_WIN32_FALSE@SYS_LIBS = 
 @BUILD_WIN32_TRUE@SYS_LIBS = -lws2_32 -lshell32 -ladvapi32
-@BUILD_WIN32_FALSE@SYS_SRC = $(am__append_16) $(am__append_17) \
-@BUILD_WIN32_FALSE@	$(am__append_18) $(am__append_19) \
-@BUILD_WIN32_FALSE@	$(am__append_20) $(am__append_21) \
-@BUILD_WIN32_FALSE@	$(am__append_22) $(am__append_23)
+@BUILD_WIN32_FALSE@SYS_SRC = $(am__append_17) $(am__append_18) \
+@BUILD_WIN32_FALSE@	$(am__append_19) $(am__append_20) \
+@BUILD_WIN32_FALSE@	$(am__append_21) $(am__append_22) \
+@BUILD_WIN32_FALSE@	$(am__append_23) $(am__append_24)
 @BUILD_WIN32_TRUE@SYS_SRC = win32select.c evthread_win32.c \
 @BUILD_WIN32_TRUE@	buffer_iocp.c event_iocp.c \
-@BUILD_WIN32_TRUE@	bufferevent_async.c $(am__append_16) \
-@BUILD_WIN32_TRUE@	$(am__append_17) $(am__append_18) \
-@BUILD_WIN32_TRUE@	$(am__append_19) $(am__append_20) \
-@BUILD_WIN32_TRUE@	$(am__append_21) $(am__append_22) \
-@BUILD_WIN32_TRUE@	$(am__append_23)
+@BUILD_WIN32_TRUE@	bufferevent_async.c $(am__append_17) \
+@BUILD_WIN32_TRUE@	$(am__append_18) $(am__append_19) \
+@BUILD_WIN32_TRUE@	$(am__append_20) $(am__append_21) \
+@BUILD_WIN32_TRUE@	$(am__append_22) $(am__append_23) \
+@BUILD_WIN32_TRUE@	$(am__append_24)
 @BUILD_WIN32_FALSE@SYS_INCLUDES = 
 @BUILD_WIN32_TRUE@SYS_INCLUDES = -IWIN32-Code -IWIN32-Code/nmake
 CORE_SRC = \
diff --git a/contrib/ntp/sntp/libevent/README b/contrib/ntp/sntp/libevent/README
deleted file mode 100644
index 2723a2c..0000000
--- a/contrib/ntp/sntp/libevent/README
+++ /dev/null
@@ -1,218 +0,0 @@
-0. BUILDING AND INSTALLATION (Briefly)
-
-$ ./configure
-$ make
-$ make verify   # (optional)
-$ sudo make install
-
-1. BUILDING AND INSTALLATION (In Depth)
-
-To build libevent, type
-
-$ ./configure && make
-
-     (If you got libevent from the git repository, you will
-      first need to run the included "autogen.sh" script in order to
-      generate the configure script.)
-
-You can run the regression tests by running
-
-$ make verify
-
-Install as root via
-
-# make install
-
-Before reporting any problems, please run the regression tests.
-
-To enable the low-level tracing build the library as:
-
-   CFLAGS=-DUSE_DEBUG ./configure [...]
-
-Standard configure flags should work.  In particular, see:
-
-   --disable-shared          Only build static libraries
-   --prefix                  Install all files relative to this directory.
-
-
-The configure script also supports the following flags:
-
-   --enable-gcc-warnings     Enable extra compiler checking with GCC.
-   --disable-malloc-replacement
-                             Don't let applications replace our memory
-                             management functions
-   --disable-openssl         Disable support for OpenSSL encryption.
-   --disable-thread-support  Don't support multithreaded environments.
-
-2. USEFUL LINKS:
-
-For the latest released version of Libevent, see the official website at
-http://libevent.org/ .
-
-There's a pretty good work-in-progress manual up at
-   http://www.wangafu.net/~nickm/libevent-book/ .
-
-For the latest development versions of Libevent, access our Git repository
-via
-   "git clone git://levent.git.sourceforge.net/gitroot/levent/libevent"
-
-You can browse the git repository online at
-http://levent.git.sourceforge.net/git/gitweb-index.cgi .
-
-To report bugs, request features, or submit patches to Libevent,
-use the Sourceforge trackers at
-https://sourceforge.net/tracker/?group_id=50884 .
-
-There's also a libevent-users mailing list for talking about Libevent
-use and development: http://archives.seul.org/libevent/users/
-
-3. ACKNOWLEDGMENTS
-
-The following people have helped with suggestions, ideas, code or
-fixing bugs:
-
-  Samy Al Bahra
-  Jacob Appelbaum
-  Arno Bakker
-  Weston Andros Adamson
-  William Ahern
-  Ivan Andropov
-  Sergey Avseyev
-  Avi Bab
-  Joachim Bauch
-  Gilad Benjamini
-  Stas Bekman
-  Denis Bilenko
-  Julien Blache
-  Kevin Bowling
-  Tomash Brechko
-  Kelly Brock
-  Ralph Castain
-  Adrian Chadd
-  Lawnstein Chan
-  Shuo Chen
-  Ka-Hing Cheung
-  Andrew Cox
-  Paul Croome
-  George Danchev
-  Andrew Danforth
-  Ed Day
-  Christopher Davis
-  Mike Davis
-  Antony Dovgal
-  Mihai Draghicioiu
-  Alexander Drozdov
-  Mark Ellzey
-  Shie Erlich
-  Leonid Evdokimov
-  Juan Pablo Fernandez
-  Christophe Fillot
-  Mike Frysinger
-  Remi Gacogne
-  Artem Germanov
-  Alexander von Gernler
-  Artur Grabowski
-  Diwaker Gupta
-  Sebastian Hahn
-  Dave Hart
-  Greg Hazel
-  Michael Herf
-  Sebastian Hahn
-  Savg He
-  Mark Heily
-  Michael Herf
-  Greg Hewgill
-  Andrew Hochhaus
-  Aaron Hopkins
-  Tani Hosokawa
-  Jamie Iles
-  Claudio Jeker
-  Evan Jones
-  George Kadianakis
-  Phua Keat
-  Azat Khuzhin
-  Alexander Klauer
-  Kevin Ko
-  Brian Koehmstedt
-  Marko Kreen
-  Valery Kyholodov
-  Ross Lagerwall
-  Scott Lamb
-  Christopher Layne
-  Adam Langley
-  Graham Leggett
-  Philip Lewis
-  Zhou Li
-  David Libenzi
-  Yan Lin
-  Moshe Litvin
-  Simon Liu
-  Mitchell Livingston
-  Hagne Mahre
-  Lubomir Marinov
-  Abilio Marques
-  Abel Mathew
-  Nick Mathewson
-  James Mansion
-  Nicholas Marriott
-  Andrey Matveev
-  Caitlin Mercer
-  Dagobert Michelsen
-  Andrea Montefusco
-  Mansour Moufid
-  Mina Naguib
-  Felix Nawothnig
-  Trond Norbye
-  Linus Nordberg
-  Richard Nyberg
-  Jon Oberheide
-  Phil Oleson
-  Dave Pacheco
-  Derrick Pallas
-  Tassilo von Parseval
-  Catalin Patulea
-  Patrick Pelletier
-  Simon Perreault
-  Pierre Phaneuf
-  Amarin Phaosawasdi
-  Ryan Phillips
-  Dimitre Piskyulev
-  Pavel Plesov
-  Jon Poland
-  Roman Puls
-  Nate R
-  Robert Ransom
-  Bert JW Regeer
-  Peter Rosin
-  Maseeb Abdul Qadir
-  Wang Qin
-  Alex S
-  Hanna Schroeter
-  Ralf Schmitt
-  Mike Smellie
-  Kevin Springborn
-  Nir Soffer
-  Harlan Stenn
-  Steve Snyder
-  Dug Song
-  Dongsheng Song
-  Hannes Sowa
-  Ferenc Szalai
-  Brodie Thiesfield
-  Jason Toffaletti
-  Gisle Vanem
-  Bas Verhoeven
-  Constantine Verutin
-  Colin Watt
-  Zack Weinberg
-  Jardel Weyrich
-  Jay R. Wren
-  Zack Weinberg
-  Alejo
-  Alex
-  Taral
-  propanbutan
-  mmadia
-  yangacer
-
-If we have forgotten your name, please contact us.
diff --git a/contrib/ntp/sntp/libevent/WIN32-Code/nmake/event2/event-config.h b/contrib/ntp/sntp/libevent/WIN32-Code/nmake/event2/event-config.h
index da55028..8cbf190 100644
--- a/contrib/ntp/sntp/libevent/WIN32-Code/nmake/event2/event-config.h
+++ b/contrib/ntp/sntp/libevent/WIN32-Code/nmake/event2/event-config.h
@@ -274,7 +274,7 @@
 /* #undef EVENT__HAVE_WORKING_KQUEUE */
 
 /* Numeric representation of the version */
-#define EVENT__NUMERIC_VERSION 0x02010301
+#define EVENT__NUMERIC_VERSION 0x02010500
 
 /* Name of package */
 #define EVENT__PACKAGE "libevent"
@@ -331,7 +331,7 @@
 #define EVENT__TIME_WITH_SYS_TIME 1
 
 /* Version number of package */
-#define EVENT__VERSION "2.1.3-alpha-dev"
+#define EVENT__VERSION "2.1.5-beta"
 
 /* Define to appropriate substitue if compiler doesnt have __func__ */
 #define EVENT____func__ __FUNCTION__
diff --git a/contrib/ntp/sntp/libevent/WIN32-Code/tree.h b/contrib/ntp/sntp/libevent/WIN32-Code/tree.h
index 585618d..2ccfbf2 100644
--- a/contrib/ntp/sntp/libevent/WIN32-Code/tree.h
+++ b/contrib/ntp/sntp/libevent/WIN32-Code/tree.h
@@ -675,680 +675,3 @@ name##_RB_MINMAX(struct name *head, int val)				\
 	     (x) = name##_RB_NEXT(x))
 
 #endif	/* _SYS_TREE_H_ */
-/*	$OpenBSD: tree.h,v 1.7 2002/10/17 21:51:54 art Exp $	*/
-/*
- * Copyright 2002 Niels Provos <provos@citi.umich.edu>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef	_SYS_TREE_H_
-#define	_SYS_TREE_H_
-
-/*
- * This file defines data structures for different types of trees:
- * splay trees and red-black trees.
- *
- * A splay tree is a self-organizing data structure.  Every operation
- * on the tree causes a splay to happen.  The splay moves the requested
- * node to the root of the tree and partly rebalances it.
- *
- * This has the benefit that request locality causes faster lookups as
- * the requested nodes move to the top of the tree.  On the other hand,
- * every lookup causes memory writes.
- *
- * The Balance Theorem bounds the total access time for m operations
- * and n inserts on an initially empty tree as O((m + n)lg n).  The
- * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
- *
- * A red-black tree is a binary search tree with the node color as an
- * extra attribute.  It fulfills a set of conditions:
- *	- every search path from the root to a leaf consists of the
- *	  same number of black nodes,
- *	- each red node (except for the root) has a black parent,
- *	- each leaf node is black.
- *
- * Every operation on a red-black tree is bounded as O(lg n).
- * The maximum height of a red-black tree is 2lg (n+1).
- */
-
-#define SPLAY_HEAD(name, type)						\
-struct name {								\
-	struct type *sph_root; /* root of the tree */			\
-}
-
-#define SPLAY_INITIALIZER(root)						\
-	{ NULL }
-
-#define SPLAY_INIT(root) do {						\
-	(root)->sph_root = NULL;					\
-} while (0)
-
-#define SPLAY_ENTRY(type)						\
-struct {								\
-	struct type *spe_left; /* left element */			\
-	struct type *spe_right; /* right element */			\
-}
-
-#define SPLAY_LEFT(elm, field)		(elm)->field.spe_left
-#define SPLAY_RIGHT(elm, field)		(elm)->field.spe_right
-#define SPLAY_ROOT(head)		(head)->sph_root
-#define SPLAY_EMPTY(head)		(SPLAY_ROOT(head) == NULL)
-
-/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
-#define SPLAY_ROTATE_RIGHT(head, tmp, field) do {			\
-	SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field);	\
-	SPLAY_RIGHT(tmp, field) = (head)->sph_root;			\
-	(head)->sph_root = tmp;						\
-} while (0)
-
-#define SPLAY_ROTATE_LEFT(head, tmp, field) do {			\
-	SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field);	\
-	SPLAY_LEFT(tmp, field) = (head)->sph_root;			\
-	(head)->sph_root = tmp;						\
-} while (0)
-
-#define SPLAY_LINKLEFT(head, tmp, field) do {				\
-	SPLAY_LEFT(tmp, field) = (head)->sph_root;			\
-	tmp = (head)->sph_root;						\
-	(head)->sph_root = SPLAY_LEFT((head)->sph_root, field);		\
-} while (0)
-
-#define SPLAY_LINKRIGHT(head, tmp, field) do {				\
-	SPLAY_RIGHT(tmp, field) = (head)->sph_root;			\
-	tmp = (head)->sph_root;						\
-	(head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);	\
-} while (0)
-
-#define SPLAY_ASSEMBLE(head, node, left, right, field) do {		\
-	SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field);	\
-	SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\
-	SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field);	\
-	SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field);	\
-} while (0)
-
-/* Generates prototypes and inline functions */
-
-#define SPLAY_PROTOTYPE(name, type, field, cmp)				\
-void name##_SPLAY(struct name *, struct type *);			\
-void name##_SPLAY_MINMAX(struct name *, int);				\
-struct type *name##_SPLAY_INSERT(struct name *, struct type *);		\
-struct type *name##_SPLAY_REMOVE(struct name *, struct type *);		\
-									\
-/* Finds the node with the same key as elm */				\
-static __inline struct type *						\
-name##_SPLAY_FIND(struct name *head, struct type *elm)			\
-{									\
-	if (SPLAY_EMPTY(head))						\
-		return(NULL);						\
-	name##_SPLAY(head, elm);					\
-	if ((cmp)(elm, (head)->sph_root) == 0)				\
-		return (head->sph_root);				\
-	return (NULL);							\
-}									\
-									\
-static __inline struct type *						\
-name##_SPLAY_NEXT(struct name *head, struct type *elm)			\
-{									\
-	name##_SPLAY(head, elm);					\
-	if (SPLAY_RIGHT(elm, field) != NULL) {				\
-		elm = SPLAY_RIGHT(elm, field);				\
-		while (SPLAY_LEFT(elm, field) != NULL) {		\
-			elm = SPLAY_LEFT(elm, field);			\
-		}							\
-	} else								\
-		elm = NULL;						\
-	return (elm);							\
-}									\
-									\
-static __inline struct type *						\
-name##_SPLAY_MIN_MAX(struct name *head, int val)			\
-{									\
-	name##_SPLAY_MINMAX(head, val);					\
-	return (SPLAY_ROOT(head));					\
-}
-
-/* Main splay operation.
- * Moves node close to the key of elm to top
- */
-#define SPLAY_GENERATE(name, type, field, cmp)				\
-struct type *								\
-name##_SPLAY_INSERT(struct name *head, struct type *elm)		\
-{									\
-    if (SPLAY_EMPTY(head)) {						\
-	    SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL;	\
-    } else {								\
-	    int __comp;							\
-	    name##_SPLAY(head, elm);					\
-	    __comp = (cmp)(elm, (head)->sph_root);			\
-	    if(__comp < 0) {						\
-		    SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field);\
-		    SPLAY_RIGHT(elm, field) = (head)->sph_root;		\
-		    SPLAY_LEFT((head)->sph_root, field) = NULL;		\
-	    } else if (__comp > 0) {					\
-		    SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field);\
-		    SPLAY_LEFT(elm, field) = (head)->sph_root;		\
-		    SPLAY_RIGHT((head)->sph_root, field) = NULL;	\
-	    } else							\
-		    return ((head)->sph_root);				\
-    }									\
-    (head)->sph_root = (elm);						\
-    return (NULL);							\
-}									\
-									\
-struct type *								\
-name##_SPLAY_REMOVE(struct name *head, struct type *elm)		\
-{									\
-	struct type *__tmp;						\
-	if (SPLAY_EMPTY(head))						\
-		return (NULL);						\
-	name##_SPLAY(head, elm);					\
-	if ((cmp)(elm, (head)->sph_root) == 0) {			\
-		if (SPLAY_LEFT((head)->sph_root, field) == NULL) {	\
-			(head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);\
-		} else {						\
-			__tmp = SPLAY_RIGHT((head)->sph_root, field);	\
-			(head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\
-			name##_SPLAY(head, elm);			\
-			SPLAY_RIGHT((head)->sph_root, field) = __tmp;	\
-		}							\
-		return (elm);						\
-	}								\
-	return (NULL);							\
-}									\
-									\
-void									\
-name##_SPLAY(struct name *head, struct type *elm)			\
-{									\
-	struct type __node, *__left, *__right, *__tmp;			\
-	int __comp;							\
-\
-	SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
-	__left = __right = &__node;					\
-\
-	while ((__comp = (cmp)(elm, (head)->sph_root))) {		\
-		if (__comp < 0) {					\
-			__tmp = SPLAY_LEFT((head)->sph_root, field);	\
-			if (__tmp == NULL)				\
-				break;					\
-			if ((cmp)(elm, __tmp) < 0){			\
-				SPLAY_ROTATE_RIGHT(head, __tmp, field);	\
-				if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
-					break;				\
-			}						\
-			SPLAY_LINKLEFT(head, __right, field);		\
-		} else if (__comp > 0) {				\
-			__tmp = SPLAY_RIGHT((head)->sph_root, field);	\
-			if (__tmp == NULL)				\
-				break;					\
-			if ((cmp)(elm, __tmp) > 0){			\
-				SPLAY_ROTATE_LEFT(head, __tmp, field);	\
-				if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
-					break;				\
-			}						\
-			SPLAY_LINKRIGHT(head, __left, field);		\
-		}							\
-	}								\
-	SPLAY_ASSEMBLE(head, &__node, __left, __right, field);		\
-}									\
-									\
-/* Splay with either the minimum or the maximum element			\
- * Used to find minimum or maximum element in tree.			\
- */									\
-void name##_SPLAY_MINMAX(struct name *head, int __comp) \
-{									\
-	struct type __node, *__left, *__right, *__tmp;			\
-\
-	SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
-	__left = __right = &__node;					\
-\
-	while (1) {							\
-		if (__comp < 0) {					\
-			__tmp = SPLAY_LEFT((head)->sph_root, field);	\
-			if (__tmp == NULL)				\
-				break;					\
-			if (__comp < 0){				\
-				SPLAY_ROTATE_RIGHT(head, __tmp, field);	\
-				if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
-					break;				\
-			}						\
-			SPLAY_LINKLEFT(head, __right, field);		\
-		} else if (__comp > 0) {				\
-			__tmp = SPLAY_RIGHT((head)->sph_root, field);	\
-			if (__tmp == NULL)				\
-				break;					\
-			if (__comp > 0) {				\
-				SPLAY_ROTATE_LEFT(head, __tmp, field);	\
-				if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
-					break;				\
-			}						\
-			SPLAY_LINKRIGHT(head, __left, field);		\
-		}							\
-	}								\
-	SPLAY_ASSEMBLE(head, &__node, __left, __right, field);		\
-}
-
-#define SPLAY_NEGINF	-1
-#define SPLAY_INF	1
-
-#define SPLAY_INSERT(name, x, y)	name##_SPLAY_INSERT(x, y)
-#define SPLAY_REMOVE(name, x, y)	name##_SPLAY_REMOVE(x, y)
-#define SPLAY_FIND(name, x, y)		name##_SPLAY_FIND(x, y)
-#define SPLAY_NEXT(name, x, y)		name##_SPLAY_NEXT(x, y)
-#define SPLAY_MIN(name, x)		(SPLAY_EMPTY(x) ? NULL	\
-					: name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
-#define SPLAY_MAX(name, x)		(SPLAY_EMPTY(x) ? NULL	\
-					: name##_SPLAY_MIN_MAX(x, SPLAY_INF))
-
-#define SPLAY_FOREACH(x, name, head)					\
-	for ((x) = SPLAY_MIN(name, head);				\
-	     (x) != NULL;						\
-	     (x) = SPLAY_NEXT(name, head, x))
-
-/* Macros that define a red-back tree */
-#define RB_HEAD(name, type)						\
-struct name {								\
-	struct type *rbh_root; /* root of the tree */			\
-}
-
-#define RB_INITIALIZER(root)						\
-	{ NULL }
-
-#define RB_INIT(root) do {						\
-	(root)->rbh_root = NULL;					\
-} while (0)
-
-#define RB_BLACK	0
-#define RB_RED		1
-#define RB_ENTRY(type)							\
-struct {								\
-	struct type *rbe_left;		/* left element */		\
-	struct type *rbe_right;		/* right element */		\
-	struct type *rbe_parent;	/* parent element */		\
-	int rbe_color;			/* node color */		\
-}
-
-#define RB_LEFT(elm, field)		(elm)->field.rbe_left
-#define RB_RIGHT(elm, field)		(elm)->field.rbe_right
-#define RB_PARENT(elm, field)		(elm)->field.rbe_parent
-#define RB_COLOR(elm, field)		(elm)->field.rbe_color
-#define RB_ROOT(head)			(head)->rbh_root
-#define RB_EMPTY(head)			(RB_ROOT(head) == NULL)
-
-#define RB_SET(elm, parent, field) do {					\
-	RB_PARENT(elm, field) = parent;					\
-	RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL;		\
-	RB_COLOR(elm, field) = RB_RED;					\
-} while (0)
-
-#define RB_SET_BLACKRED(black, red, field) do {				\
-	RB_COLOR(black, field) = RB_BLACK;				\
-	RB_COLOR(red, field) = RB_RED;					\
-} while (0)
-
-#ifndef RB_AUGMENT
-#define RB_AUGMENT(x)
-#endif
-
-#define RB_ROTATE_LEFT(head, elm, tmp, field) do {			\
-	(tmp) = RB_RIGHT(elm, field);					\
-	if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field))) {		\
-		RB_PARENT(RB_LEFT(tmp, field), field) = (elm);		\
-	}								\
-	RB_AUGMENT(elm);						\
-	if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) {		\
-		if ((elm) == RB_LEFT(RB_PARENT(elm, field), field))	\
-			RB_LEFT(RB_PARENT(elm, field), field) = (tmp);	\
-		else							\
-			RB_RIGHT(RB_PARENT(elm, field), field) = (tmp);	\
-	} else								\
-		(head)->rbh_root = (tmp);				\
-	RB_LEFT(tmp, field) = (elm);					\
-	RB_PARENT(elm, field) = (tmp);					\
-	RB_AUGMENT(tmp);						\
-	if ((RB_PARENT(tmp, field)))					\
-		RB_AUGMENT(RB_PARENT(tmp, field));			\
-} while (0)
-
-#define RB_ROTATE_RIGHT(head, elm, tmp, field) do {			\
-	(tmp) = RB_LEFT(elm, field);					\
-	if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field))) {		\
-		RB_PARENT(RB_RIGHT(tmp, field), field) = (elm);		\
-	}								\
-	RB_AUGMENT(elm);						\
-	if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) {		\
-		if ((elm) == RB_LEFT(RB_PARENT(elm, field), field))	\
-			RB_LEFT(RB_PARENT(elm, field), field) = (tmp);	\
-		else							\
-			RB_RIGHT(RB_PARENT(elm, field), field) = (tmp);	\
-	} else								\
-		(head)->rbh_root = (tmp);				\
-	RB_RIGHT(tmp, field) = (elm);					\
-	RB_PARENT(elm, field) = (tmp);					\
-	RB_AUGMENT(tmp);						\
-	if ((RB_PARENT(tmp, field)))					\
-		RB_AUGMENT(RB_PARENT(tmp, field));			\
-} while (0)
-
-/* Generates prototypes and inline functions */
-#define RB_PROTOTYPE(name, type, field, cmp)				\
-void name##_RB_INSERT_COLOR(struct name *, struct type *);	\
-void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\
-struct type *name##_RB_REMOVE(struct name *, struct type *);		\
-struct type *name##_RB_INSERT(struct name *, struct type *);		\
-struct type *name##_RB_FIND(struct name *, struct type *);		\
-struct type *name##_RB_NEXT(struct type *);				\
-struct type *name##_RB_MINMAX(struct name *, int);			\
-									\
-
-/* Main rb operation.
- * Moves node close to the key of elm to top
- */
-#define RB_GENERATE(name, type, field, cmp)				\
-void									\
-name##_RB_INSERT_COLOR(struct name *head, struct type *elm)		\
-{									\
-	struct type *parent, *gparent, *tmp;				\
-	while ((parent = RB_PARENT(elm, field)) &&			\
-	    RB_COLOR(parent, field) == RB_RED) {			\
-		gparent = RB_PARENT(parent, field);			\
-		if (parent == RB_LEFT(gparent, field)) {		\
-			tmp = RB_RIGHT(gparent, field);			\
-			if (tmp && RB_COLOR(tmp, field) == RB_RED) {	\
-				RB_COLOR(tmp, field) = RB_BLACK;	\
-				RB_SET_BLACKRED(parent, gparent, field);\
-				elm = gparent;				\
-				continue;				\
-			}						\
-			if (RB_RIGHT(parent, field) == elm) {		\
-				RB_ROTATE_LEFT(head, parent, tmp, field);\
-				tmp = parent;				\
-				parent = elm;				\
-				elm = tmp;				\
-			}						\
-			RB_SET_BLACKRED(parent, gparent, field);	\
-			RB_ROTATE_RIGHT(head, gparent, tmp, field);	\
-		} else {						\
-			tmp = RB_LEFT(gparent, field);			\
-			if (tmp && RB_COLOR(tmp, field) == RB_RED) {	\
-				RB_COLOR(tmp, field) = RB_BLACK;	\
-				RB_SET_BLACKRED(parent, gparent, field);\
-				elm = gparent;				\
-				continue;				\
-			}						\
-			if (RB_LEFT(parent, field) == elm) {		\
-				RB_ROTATE_RIGHT(head, parent, tmp, field);\
-				tmp = parent;				\
-				parent = elm;				\
-				elm = tmp;				\
-			}						\
-			RB_SET_BLACKRED(parent, gparent, field);	\
-			RB_ROTATE_LEFT(head, gparent, tmp, field);	\
-		}							\
-	}								\
-	RB_COLOR(head->rbh_root, field) = RB_BLACK;			\
-}									\
-									\
-void									\
-name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm) \
-{									\
-	struct type *tmp;						\
-	while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) &&	\
-	    elm != RB_ROOT(head)) {					\
-		if (RB_LEFT(parent, field) == elm) {			\
-			tmp = RB_RIGHT(parent, field);			\
-			if (RB_COLOR(tmp, field) == RB_RED) {		\
-				RB_SET_BLACKRED(tmp, parent, field);	\
-				RB_ROTATE_LEFT(head, parent, tmp, field);\
-				tmp = RB_RIGHT(parent, field);		\
-			}						\
-			if ((RB_LEFT(tmp, field) == NULL ||		\
-			    RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
-			    (RB_RIGHT(tmp, field) == NULL ||		\
-			    RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\
-				RB_COLOR(tmp, field) = RB_RED;		\
-				elm = parent;				\
-				parent = RB_PARENT(elm, field);		\
-			} else {					\
-				if (RB_RIGHT(tmp, field) == NULL ||	\
-				    RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) {\
-					struct type *oleft;		\
-					if ((oleft = RB_LEFT(tmp, field)))\
-						RB_COLOR(oleft, field) = RB_BLACK;\
-					RB_COLOR(tmp, field) = RB_RED;	\
-					RB_ROTATE_RIGHT(head, tmp, oleft, field);\
-					tmp = RB_RIGHT(parent, field);	\
-				}					\
-				RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
-				RB_COLOR(parent, field) = RB_BLACK;	\
-				if (RB_RIGHT(tmp, field))		\
-					RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK;\
-				RB_ROTATE_LEFT(head, parent, tmp, field);\
-				elm = RB_ROOT(head);			\
-				break;					\
-			}						\
-		} else {						\
-			tmp = RB_LEFT(parent, field);			\
-			if (RB_COLOR(tmp, field) == RB_RED) {		\
-				RB_SET_BLACKRED(tmp, parent, field);	\
-				RB_ROTATE_RIGHT(head, parent, tmp, field);\
-				tmp = RB_LEFT(parent, field);		\
-			}						\
-			if ((RB_LEFT(tmp, field) == NULL ||		\
-			    RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
-			    (RB_RIGHT(tmp, field) == NULL ||		\
-			    RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\
-				RB_COLOR(tmp, field) = RB_RED;		\
-				elm = parent;				\
-				parent = RB_PARENT(elm, field);		\
-			} else {					\
-				if (RB_LEFT(tmp, field) == NULL ||	\
-				    RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) {\
-					struct type *oright;		\
-					if ((oright = RB_RIGHT(tmp, field)))\
-						RB_COLOR(oright, field) = RB_BLACK;\
-					RB_COLOR(tmp, field) = RB_RED;	\
-					RB_ROTATE_LEFT(head, tmp, oright, field);\
-					tmp = RB_LEFT(parent, field);	\
-				}					\
-				RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
-				RB_COLOR(parent, field) = RB_BLACK;	\
-				if (RB_LEFT(tmp, field))		\
-					RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK;\
-				RB_ROTATE_RIGHT(head, parent, tmp, field);\
-				elm = RB_ROOT(head);			\
-				break;					\
-			}						\
-		}							\
-	}								\
-	if (elm)							\
-		RB_COLOR(elm, field) = RB_BLACK;			\
-}									\
-									\
-struct type *								\
-name##_RB_REMOVE(struct name *head, struct type *elm)			\
-{									\
-	struct type *child, *parent, *old = elm;			\
-	int color;							\
-	if (RB_LEFT(elm, field) == NULL)				\
-		child = RB_RIGHT(elm, field);				\
-	else if (RB_RIGHT(elm, field) == NULL)				\
-		child = RB_LEFT(elm, field);				\
-	else {								\
-		struct type *left;					\
-		elm = RB_RIGHT(elm, field);				\
-		while ((left = RB_LEFT(elm, field)))			\
-			elm = left;					\
-		child = RB_RIGHT(elm, field);				\
-		parent = RB_PARENT(elm, field);				\
-		color = RB_COLOR(elm, field);				\
-		if (child)						\
-			RB_PARENT(child, field) = parent;		\
-		if (parent) {						\
-			if (RB_LEFT(parent, field) == elm)		\
-				RB_LEFT(parent, field) = child;		\
-			else						\
-				RB_RIGHT(parent, field) = child;	\
-			RB_AUGMENT(parent);				\
-		} else							\
-			RB_ROOT(head) = child;				\
-		if (RB_PARENT(elm, field) == old)			\
-			parent = elm;					\
-		(elm)->field = (old)->field;				\
-		if (RB_PARENT(old, field)) {				\
-			if (RB_LEFT(RB_PARENT(old, field), field) == old)\
-				RB_LEFT(RB_PARENT(old, field), field) = elm;\
-			else						\
-				RB_RIGHT(RB_PARENT(old, field), field) = elm;\
-			RB_AUGMENT(RB_PARENT(old, field));		\
-		} else							\
-			RB_ROOT(head) = elm;				\
-		RB_PARENT(RB_LEFT(old, field), field) = elm;		\
-		if (RB_RIGHT(old, field))				\
-			RB_PARENT(RB_RIGHT(old, field), field) = elm;	\
-		if (parent) {						\
-			left = parent;					\
-			do {						\
-				RB_AUGMENT(left);			\
-			} while ((left = RB_PARENT(left, field)));	\
-		}							\
-		goto color;						\
-	}								\
-	parent = RB_PARENT(elm, field);					\
-	color = RB_COLOR(elm, field);					\
-	if (child)							\
-		RB_PARENT(child, field) = parent;			\
-	if (parent) {							\
-		if (RB_LEFT(parent, field) == elm)			\
-			RB_LEFT(parent, field) = child;			\
-		else							\
-			RB_RIGHT(parent, field) = child;		\
-		RB_AUGMENT(parent);					\
-	} else								\
-		RB_ROOT(head) = child;					\
-color:									\
-	if (color == RB_BLACK)						\
-		name##_RB_REMOVE_COLOR(head, parent, child);		\
-	return (old);							\
-}									\
-									\
-/* Inserts a node into the RB tree */					\
-struct type *								\
-name##_RB_INSERT(struct name *head, struct type *elm)			\
-{									\
-	struct type *tmp;						\
-	struct type *parent = NULL;					\
-	int comp = 0;							\
-	tmp = RB_ROOT(head);						\
-	while (tmp) {							\
-		parent = tmp;						\
-		comp = (cmp)(elm, parent);				\
-		if (comp < 0)						\
-			tmp = RB_LEFT(tmp, field);			\
-		else if (comp > 0)					\
-			tmp = RB_RIGHT(tmp, field);			\
-		else							\
-			return (tmp);					\
-	}								\
-	RB_SET(elm, parent, field);					\
-	if (parent != NULL) {						\
-		if (comp < 0)						\
-			RB_LEFT(parent, field) = elm;			\
-		else							\
-			RB_RIGHT(parent, field) = elm;			\
-		RB_AUGMENT(parent);					\
-	} else								\
-		RB_ROOT(head) = elm;					\
-	name##_RB_INSERT_COLOR(head, elm);				\
-	return (NULL);							\
-}									\
-									\
-/* Finds the node with the same key as elm */				\
-struct type *								\
-name##_RB_FIND(struct name *head, struct type *elm)			\
-{									\
-	struct type *tmp = RB_ROOT(head);				\
-	int comp;							\
-	while (tmp) {							\
-		comp = cmp(elm, tmp);					\
-		if (comp < 0)						\
-			tmp = RB_LEFT(tmp, field);			\
-		else if (comp > 0)					\
-			tmp = RB_RIGHT(tmp, field);			\
-		else							\
-			return (tmp);					\
-	}								\
-	return (NULL);							\
-}									\
-									\
-struct type *								\
-name##_RB_NEXT(struct type *elm)					\
-{									\
-	if (RB_RIGHT(elm, field)) {					\
-		elm = RB_RIGHT(elm, field);				\
-		while (RB_LEFT(elm, field))				\
-			elm = RB_LEFT(elm, field);			\
-	} else {							\
-		if (RB_PARENT(elm, field) &&				\
-		    (elm == RB_LEFT(RB_PARENT(elm, field), field)))	\
-			elm = RB_PARENT(elm, field);			\
-		else {							\
-			while (RB_PARENT(elm, field) &&			\
-			    (elm == RB_RIGHT(RB_PARENT(elm, field), field)))\
-				elm = RB_PARENT(elm, field);		\
-			elm = RB_PARENT(elm, field);			\
-		}							\
-	}								\
-	return (elm);							\
-}									\
-									\
-struct type *								\
-name##_RB_MINMAX(struct name *head, int val)				\
-{									\
-	struct type *tmp = RB_ROOT(head);				\
-	struct type *parent = NULL;					\
-	while (tmp) {							\
-		parent = tmp;						\
-		if (val < 0)						\
-			tmp = RB_LEFT(tmp, field);			\
-		else							\
-			tmp = RB_RIGHT(tmp, field);			\
-	}								\
-	return (parent);						\
-}
-
-#define RB_NEGINF	-1
-#define RB_INF	1
-
-#define RB_INSERT(name, x, y)	name##_RB_INSERT(x, y)
-#define RB_REMOVE(name, x, y)	name##_RB_REMOVE(x, y)
-#define RB_FIND(name, x, y)	name##_RB_FIND(x, y)
-#define RB_NEXT(name, x, y)	name##_RB_NEXT(y)
-#define RB_MIN(name, x)		name##_RB_MINMAX(x, RB_NEGINF)
-#define RB_MAX(name, x)		name##_RB_MINMAX(x, RB_INF)
-
-#define RB_FOREACH(x, name, head)					\
-	for ((x) = RB_MIN(name, head);					\
-	     (x) != NULL;						\
-	     (x) = name##_RB_NEXT(x))
-
-#endif	/* _SYS_TREE_H_ */
diff --git a/contrib/ntp/sntp/libevent/aclocal.m4 b/contrib/ntp/sntp/libevent/aclocal.m4
index 3bba486..4c1c849 100644
--- a/contrib/ntp/sntp/libevent/aclocal.m4
+++ b/contrib/ntp/sntp/libevent/aclocal.m4
@@ -1131,6 +1131,7 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([m4/ac_backport_259_ssizet.m4])
+m4_include([m4/acx_pthread.m4])
 m4_include([m4/libevent_openssl.m4])
 m4_include([m4/libtool.m4])
 m4_include([m4/ltoptions.m4])
@@ -1138,5 +1139,3 @@ m4_include([m4/ltsugar.m4])
 m4_include([m4/ltversion.m4])
 m4_include([m4/lt~obsolete.m4])
 m4_include([m4/ntp_pkg_config.m4])
-m4_include([m4/openldap-thread-check.m4])
-m4_include([m4/openldap.m4])
diff --git a/contrib/ntp/sntp/libevent/buffer.c b/contrib/ntp/sntp/libevent/buffer.c
index e603be8..a1a2b98 100644
--- a/contrib/ntp/sntp/libevent/buffer.c
+++ b/contrib/ntp/sntp/libevent/buffer.c
@@ -158,12 +158,20 @@ evbuffer_chain_new(size_t size)
 	struct evbuffer_chain *chain;
 	size_t to_alloc;
 
+	if (size > EVBUFFER_CHAIN_MAX - EVBUFFER_CHAIN_SIZE)
+		return (NULL);
+
 	size += EVBUFFER_CHAIN_SIZE;
 
 	/* get the next largest memory that can hold the buffer */
-	to_alloc = MIN_BUFFER_SIZE;
-	while (to_alloc < size)
-		to_alloc <<= 1;
+	if (size < EVBUFFER_CHAIN_MAX / 2) {
+		to_alloc = MIN_BUFFER_SIZE;
+		while (to_alloc < size) {
+			to_alloc <<= 1;
+		}
+	} else {
+		to_alloc = size;
+	}
 
 	/* we get everything in one chunk */
 	if ((chain = mm_malloc(to_alloc)) == NULL)
@@ -1133,6 +1141,7 @@ evbuffer_drain(struct evbuffer *buf, size_t len)
 		}
 
 		buf->first = chain;
+		EVUTIL_ASSERT(chain && remaining <= chain->off);
 		chain->misalign += remaining;
 		chain->off -= remaining;
 	}
@@ -1181,6 +1190,10 @@ evbuffer_copyout_from(struct evbuffer *buf, const struct evbuffer_ptr *pos,
 	EVBUFFER_LOCK(buf);
 
 	if (pos) {
+		if (datlen > (size_t)(EV_SSIZE_MAX - pos->pos)) {
+			result = -1;
+			goto done;
+		}
 		chain = pos->internal_.chain;
 		pos_in_chain = pos->internal_.pos_in_chain;
 		if (datlen + pos->pos > buf->total_len)
@@ -1218,6 +1231,8 @@ evbuffer_copyout_from(struct evbuffer *buf, const struct evbuffer_ptr *pos,
 
 	if (datlen) {
 		EVUTIL_ASSERT(chain);
+		EVUTIL_ASSERT(datlen+pos_in_chain <= chain->off);
+
 		memcpy(data, chain->buffer + chain->misalign + pos_in_chain,
 		    datlen);
 	}
@@ -1712,6 +1727,10 @@ evbuffer_add(struct evbuffer *buf, const void *data_in, size_t datlen)
 	if (buf->freeze_end) {
 		goto done;
 	}
+	/* Prevent buf->total_len overflow */
+	if (datlen > EV_SIZE_MAX - buf->total_len) {
+		goto done;
+	}
 
 	chain = buf->last;
 
@@ -1725,7 +1744,10 @@ evbuffer_add(struct evbuffer *buf, const void *data_in, size_t datlen)
 	}
 
 	if ((chain->flags & EVBUFFER_IMMUTABLE) == 0) {
-		remain = (size_t)(chain->buffer_len - chain->misalign - chain->off);
+		/* Always true for mutable buffers */
+		EVUTIL_ASSERT(chain->misalign >= 0 &&
+		    (ev_uint64_t)chain->misalign <= EVBUFFER_CHAIN_MAX);
+		remain = chain->buffer_len - (size_t)chain->misalign - chain->off;
 		if (remain >= datlen) {
 			/* there's enough space to hold all the data in the
 			 * current last chain */
@@ -1796,6 +1818,9 @@ evbuffer_prepend(struct evbuffer *buf, const void *data, size_t datlen)
 	if (buf->freeze_start) {
 		goto done;
 	}
+	if (datlen > EV_SIZE_MAX - buf->total_len) {
+		goto done;
+	}
 
 	chain = buf->first;
 
@@ -1808,6 +1833,10 @@ evbuffer_prepend(struct evbuffer *buf, const void *data, size_t datlen)
 
 	/* we cannot touch immutable buffers */
 	if ((chain->flags & EVBUFFER_IMMUTABLE) == 0) {
+		/* Always true for mutable buffers */
+		EVUTIL_ASSERT(chain->misalign >= 0 &&
+		    (ev_uint64_t)chain->misalign <= EVBUFFER_CHAIN_MAX);
+
 		/* If this chain is empty, we can treat it as
 		 * 'empty at the beginning' rather than 'empty at the end' */
 		if (chain->off == 0)
@@ -1845,6 +1874,7 @@ evbuffer_prepend(struct evbuffer *buf, const void *data, size_t datlen)
 	tmp->next = chain;
 
 	tmp->off = datlen;
+	EVUTIL_ASSERT(datlen <= tmp->buffer_len);
 	tmp->misalign = tmp->buffer_len - datlen;
 
 	memcpy(tmp->buffer + tmp->misalign, data, datlen);
@@ -1943,7 +1973,9 @@ evbuffer_expand_singlechain(struct evbuffer *buf, size_t datlen)
 
 	/* Would expanding this chunk be affordable and worthwhile? */
 	if (CHAIN_SPACE_LEN(chain) < chain->buffer_len / 8 ||
-	    chain->off > MAX_TO_COPY_IN_EXPAND) {
+	    chain->off > MAX_TO_COPY_IN_EXPAND ||
+	    (datlen < EVBUFFER_CHAIN_MAX &&
+		EVBUFFER_CHAIN_MAX - datlen >= chain->off)) {
 		/* It's not worth resizing this chain. Can the next one be
 		 * used? */
 		if (chain->next && CHAIN_SPACE_LEN(chain->next) >= datlen) {
@@ -2071,6 +2103,8 @@ evbuffer_expand_fast_(struct evbuffer *buf, size_t datlen, int n)
 			rmv_all = 1;
 			avail = 0;
 		} else {
+			/* can't overflow, since only mutable chains have
+			 * huge misaligns. */
 			avail = (size_t) CHAIN_SPACE_LEN(chain);
 			chain = chain->next;
 		}
@@ -2081,6 +2115,7 @@ evbuffer_expand_fast_(struct evbuffer *buf, size_t datlen, int n)
 			EVUTIL_ASSERT(chain->off == 0);
 			evbuffer_chain_free(chain);
 		}
+		EVUTIL_ASSERT(datlen >= avail);
 		tmp = evbuffer_chain_new(datlen - avail);
 		if (tmp == NULL) {
 			if (rmv_all) {
@@ -2210,6 +2245,7 @@ get_n_bytes_readable_on_socket(evutil_socket_t fd)
 	unsigned long lng = EVBUFFER_MAX_READ;
 	if (ioctlsocket(fd, FIONREAD, &lng) < 0)
 		return -1;
+	/* Can overflow, but mostly harmlessly. XXXX */
 	return (int)lng;
 #elif defined(FIONREAD)
 	int n = EVBUFFER_MAX_READ;
@@ -2322,8 +2358,14 @@ evbuffer_read(struct evbuffer *buf, evutil_socket_t fd, int howmuch)
 #ifdef USE_IOVEC_IMPL
 	remaining = n;
 	for (i=0; i < nvecs; ++i) {
-		ev_ssize_t space = (ev_ssize_t) CHAIN_SPACE_LEN(*chainp);
-		if (space < remaining) {
+		/* can't overflow, since only mutable chains have
+		 * huge misaligns. */
+		size_t space = (size_t) CHAIN_SPACE_LEN(*chainp);
+		/* XXXX This is a kludge that can waste space in perverse
+		 * situations. */
+		if (space > EVBUFFER_CHAIN_MAX)
+			space = EVBUFFER_CHAIN_MAX;
+		if ((ev_ssize_t)space < remaining) {
 			(*chainp)->off += space;
 			remaining -= (int)space;
 		} else {
@@ -2485,9 +2527,11 @@ evbuffer_write_atmost(struct evbuffer *buffer, evutil_socket_t fd,
 		/* XXX(nickm) Don't disable this code until we know if
 		 * the WSARecv code above works. */
 		void *p = evbuffer_pullup(buffer, howmuch);
+		EVUTIL_ASSERT(p || !howmuch);
 		n = send(fd, p, howmuch, 0);
 #else
 		void *p = evbuffer_pullup(buffer, howmuch);
+		EVUTIL_ASSERT(p || !howmuch);
 		n = write(fd, p, howmuch);
 #endif
 #ifdef USE_SENDFILE
@@ -2538,6 +2582,8 @@ static int
 evbuffer_ptr_subtract(struct evbuffer *buf, struct evbuffer_ptr *pos,
     size_t howfar)
 {
+	if (pos->pos < 0)
+		return -1;
 	if (howfar > (size_t)pos->pos)
 		return -1;
 	if (pos->internal_.chain && howfar <= pos->internal_.pos_in_chain) {
@@ -2571,12 +2617,17 @@ evbuffer_ptr_set(struct evbuffer *buf, struct evbuffer_ptr *pos,
 	case EVBUFFER_PTR_ADD:
 		/* this avoids iterating over all previous chains if
 		   we just want to advance the position */
+		if (pos->pos < 0 || EV_SIZE_MAX - position < (size_t)pos->pos) {
+			EVBUFFER_UNLOCK(buf);
+			return -1;
+		}
 		chain = pos->internal_.chain;
 		pos->pos += position;
 		position = pos->internal_.pos_in_chain;
 		break;
 	}
 
+	EVUTIL_ASSERT(EV_SIZE_MAX - left >= position);
 	while (chain && position + left >= chain->off) {
 		left -= chain->off - position;
 		chain = chain->next;
@@ -2613,7 +2664,9 @@ evbuffer_ptr_memcmp(const struct evbuffer *buf, const struct evbuffer_ptr *pos,
 
 	ASSERT_EVBUFFER_LOCKED(buf);
 
-	if (pos->pos + len > buf->total_len)
+	if (pos->pos < 0 ||
+	    EV_SIZE_MAX - len < (size_t)pos->pos ||
+	    pos->pos + len > buf->total_len)
 		return -1;
 
 	chain = pos->internal_.chain;
@@ -2740,7 +2793,10 @@ evbuffer_peek(struct evbuffer *buffer, ev_ssize_t len,
 	if (n_vec == 0 && len < 0) {
 		/* If no vectors are provided and they asked for "everything",
 		 * pretend they asked for the actual available amount. */
-		len = buffer->total_len - len_so_far;
+		len = buffer->total_len;
+		if (start_at) {
+			len -= start_at->pos;
+		}
 	}
 
 	while (chain) {
@@ -2804,6 +2860,9 @@ evbuffer_add_vprintf(struct evbuffer *buf, const char *fmt, va_list ap)
 
 		if (sz < 0)
 			goto done;
+		if (INT_MAX >= EVBUFFER_CHAIN_MAX &&
+		    (size_t)sz >= EVBUFFER_CHAIN_MAX)
+			goto done;
 		if ((size_t)sz < space) {
 			chain->off += sz;
 			buf->total_len += sz;
@@ -2913,6 +2972,11 @@ evbuffer_file_segment_new(
 	}
 	seg->length = length;
 
+	if (offset < 0 || length < 0 ||
+	    ((ev_uint64_t)length > EVBUFFER_CHAIN_MAX) ||
+	    (ev_uint64_t)offset > (ev_uint64_t)(EVBUFFER_CHAIN_MAX - length))
+		goto err;
+
 #if defined(USE_SENDFILE)
 	if (!(flags & EVBUF_FS_DISABLE_SENDFILE)) {
 		seg->can_sendfile = 1;
@@ -3201,7 +3265,7 @@ evbuffer_add_file_segment(struct evbuffer *buf,
 	return 0;
 err:
 	EVBUFFER_UNLOCK(buf);
-	evbuffer_file_segment_free(seg);
+	evbuffer_file_segment_free(seg); /* Lowers the refcount */
 	return -1;
 }
 
diff --git a/contrib/ntp/sntp/libevent/bufferevent.c b/contrib/ntp/sntp/libevent/bufferevent.c
index 588461a..d298d0b 100644
--- a/contrib/ntp/sntp/libevent/bufferevent.c
+++ b/contrib/ntp/sntp/libevent/bufferevent.c
@@ -599,7 +599,7 @@ bufferevent_setwatermark(struct bufferevent *bufev, short events,
 				      bufev_private->read_watermarks_cb,
 				      EVBUFFER_CB_ENABLED|EVBUFFER_CB_NODEFER);
 
-			if (evbuffer_get_length(bufev->input) > highmark)
+			if (evbuffer_get_length(bufev->input) >= highmark)
 				bufferevent_wm_suspend_read(bufev);
 			else if (evbuffer_get_length(bufev->input) < highmark)
 				bufferevent_wm_unsuspend_read(bufev);
@@ -615,25 +615,30 @@ bufferevent_setwatermark(struct bufferevent *bufev, short events,
 	BEV_UNLOCK(bufev);
 }
 
-void
+int
 bufferevent_getwatermark(struct bufferevent *bufev, short events,
     size_t *lowmark, size_t *highmark)
 {
-	BEV_LOCK(bufev);
 	if (events == EV_WRITE) {
+		BEV_LOCK(bufev);
 		if (lowmark)
 			*lowmark = bufev->wm_write.low;
 		if (highmark)
 			*highmark = bufev->wm_write.high;
+		BEV_UNLOCK(bufev);
+		return 0;
 	}
 
 	if (events == EV_READ) {
+		BEV_LOCK(bufev);
 		if (lowmark)
 			*lowmark = bufev->wm_read.low;
 		if (highmark)
 			*highmark = bufev->wm_read.high;
+		BEV_UNLOCK(bufev);
+		return 0;
 	}
-	BEV_UNLOCK(bufev);
+	return -1;
 }
 
 int
diff --git a/contrib/ntp/sntp/libevent/bufferevent_async.c b/contrib/ntp/sntp/libevent/bufferevent_async.c
index 137ad24..6395e57 100644
--- a/contrib/ntp/sntp/libevent/bufferevent_async.c
+++ b/contrib/ntp/sntp/libevent/bufferevent_async.c
@@ -381,9 +381,10 @@ be_async_destruct(struct bufferevent *bev)
 	bev_async_del_write(bev_async);
 
 	fd = evbuffer_overlapped_get_fd_(bev->input);
-	if (bev_p->options & BEV_OPT_CLOSE_ON_FREE) {
-		/* XXXX possible double-close */
+	if (fd != (evutil_socket_t)INVALID_SOCKET &&
+		(bev_p->options & BEV_OPT_CLOSE_ON_FREE)) {
 		evutil_closesocket(fd);
+		evbuffer_overlapped_set_fd_(bev->input, INVALID_SOCKET);
 	}
 }
 
@@ -564,9 +565,9 @@ bufferevent_async_new_(struct event_base *base,
 	event_overlapped_init_(&bev_a->read_overlapped, read_complete);
 	event_overlapped_init_(&bev_a->write_overlapped, write_complete);
 
+	bufferevent_init_generic_timeout_cbs_(bev);
+
 	bev_a->ok = fd >= 0;
-	if (bev_a->ok)
-		bufferevent_init_generic_timeout_cbs_(bev);
 
 	return bev;
 err:
@@ -671,6 +672,7 @@ be_async_ctrl(struct bufferevent *bev, enum bufferevent_ctrl_op op,
 		if (fd != (evutil_socket_t)INVALID_SOCKET &&
 		    (bev_a->bev.options & BEV_OPT_CLOSE_ON_FREE)) {
 			closesocket(fd);
+			evbuffer_overlapped_set_fd_(bev->input, INVALID_SOCKET);
 		}
 		bev_a->ok = 0;
 		return 0;
diff --git a/contrib/ntp/sntp/libevent/bufferevent_filter.c b/contrib/ntp/sntp/libevent/bufferevent_filter.c
index af71ebe..4d9be43 100644
--- a/contrib/ntp/sntp/libevent/bufferevent_filter.c
+++ b/contrib/ntp/sntp/libevent/bufferevent_filter.c
@@ -425,26 +425,34 @@ be_filter_readcb(struct bufferevent *underlying, void *me_)
 	enum bufferevent_filter_result res;
 	enum bufferevent_flush_mode state;
 	struct bufferevent *bufev = downcast(bevf);
+	struct bufferevent_private *bufev_private = BEV_UPCAST(bufev);
 	int processed_any = 0;
 
-	bufferevent_incref_and_lock_(bufev);
+	BEV_LOCK(bufev);
 
-	if (bevf->got_eof)
-		state = BEV_FINISHED;
-	else
-		state = BEV_NORMAL;
+	// It's possible our refcount is 0 at this point if another thread free'd our filterevent
+	EVUTIL_ASSERT(bufev_private->refcnt >= 0);
 
-	/* XXXX use return value */
-	res = be_filter_process_input(bevf, state, &processed_any);
-	(void)res;
+	// If our refcount is > 0
+	if (bufev_private->refcnt > 0) {
 
-	/* XXX This should be in process_input, not here.  There are
-	 * other places that can call process-input, and they should
-	 * force readcb calls as needed. */
-	if (processed_any)
-		bufferevent_trigger_nolock_(bufev, EV_READ, 0);
+		if (bevf->got_eof)
+			state = BEV_FINISHED;
+		else
+			state = BEV_NORMAL;
 
-	bufferevent_decref_and_unlock_(bufev);
+		/* XXXX use return value */
+		res = be_filter_process_input(bevf, state, &processed_any);
+		(void)res;
+
+		/* XXX This should be in process_input, not here.  There are
+		 * other places that can call process-input, and they should
+		 * force readcb calls as needed. */
+		if (processed_any)
+			bufferevent_trigger_nolock_(bufev, EV_READ, 0);
+	}
+
+	BEV_UNLOCK(bufev);
 }
 
 /* Called when the underlying socket has drained enough that we can write to
@@ -454,11 +462,20 @@ be_filter_writecb(struct bufferevent *underlying, void *me_)
 {
 	struct bufferevent_filtered *bevf = me_;
 	struct bufferevent *bev = downcast(bevf);
+	struct bufferevent_private *bufev_private = BEV_UPCAST(bev);
 	int processed_any = 0;
 
-	bufferevent_incref_and_lock_(bev);
-	be_filter_process_output(bevf, BEV_NORMAL, &processed_any);
-	bufferevent_decref_and_unlock_(bev);
+	BEV_LOCK(bev);
+
+	// It's possible our refcount is 0 at this point if another thread free'd our filterevent
+	EVUTIL_ASSERT(bufev_private->refcnt >= 0);
+
+	// If our refcount is > 0
+	if (bufev_private->refcnt > 0) {
+		be_filter_process_output(bevf, BEV_NORMAL, &processed_any);
+	}
+
+	BEV_UNLOCK(bev);
 }
 
 /* Called when the underlying socket has given us an error */
@@ -467,11 +484,21 @@ be_filter_eventcb(struct bufferevent *underlying, short what, void *me_)
 {
 	struct bufferevent_filtered *bevf = me_;
 	struct bufferevent *bev = downcast(bevf);
+	struct bufferevent_private *bufev_private = BEV_UPCAST(bev);
+
+	BEV_LOCK(bev);
+
+	// It's possible our refcount is 0 at this point if another thread free'd our filterevent
+	EVUTIL_ASSERT(bufev_private->refcnt >= 0);
+
+	// If our refcount is > 0
+	if (bufev_private->refcnt > 0) {
+
+		/* All we can really to is tell our own eventcb. */
+		bufferevent_run_eventcb_(bev, what, 0);
+	}
 
-	bufferevent_incref_and_lock_(bev);
-	/* All we can really to is tell our own eventcb. */
-	bufferevent_run_eventcb_(bev, what, 0);
-	bufferevent_decref_and_unlock_(bev);
+	BEV_UNLOCK(bev);
 }
 
 static int
diff --git a/contrib/ntp/sntp/libevent/bufferevent_openssl.c b/contrib/ntp/sntp/libevent/bufferevent_openssl.c
index 423b34f..b30f90f 100644
--- a/contrib/ntp/sntp/libevent/bufferevent_openssl.c
+++ b/contrib/ntp/sntp/libevent/bufferevent_openssl.c
@@ -1276,6 +1276,8 @@ be_openssl_ctrl(struct bufferevent *bev,
 			SSL_set_bio(bev_ssl->ssl, bio, bio);
 			bev_ssl->fd_is_set = 1;
 		}
+		if (data->fd == -1)
+			bev_ssl->fd_is_set = 0;
 		if (bev_ssl->state == BUFFEREVENT_SSL_OPEN)
 			return set_open_callbacks(bev_ssl, data->fd);
 		else {
diff --git a/contrib/ntp/sntp/libevent/bufferevent_pair.c b/contrib/ntp/sntp/libevent/bufferevent_pair.c
index 4340f23..8154e17 100644
--- a/contrib/ntp/sntp/libevent/bufferevent_pair.c
+++ b/contrib/ntp/sntp/libevent/bufferevent_pair.c
@@ -45,6 +45,8 @@
 struct bufferevent_pair {
 	struct bufferevent_private bev;
 	struct bufferevent_pair *partner;
+	/* For ->destruct() lock checking */
+	struct bufferevent_pair *unlinked_partner;
 };
 
 
@@ -265,11 +267,40 @@ be_pair_unlink(struct bufferevent *bev)
 	struct bufferevent_pair *bev_p = upcast(bev);
 
 	if (bev_p->partner) {
+		bev_p->unlinked_partner = bev_p->partner;
 		bev_p->partner->partner = NULL;
 		bev_p->partner = NULL;
 	}
 }
 
+/* Free *shared* lock in the latest be (since we share it between two of them). */
+static void
+be_pair_destruct(struct bufferevent *bev)
+{
+	struct bufferevent_pair *bev_p = upcast(bev);
+
+	/* Transfer ownership of the lock into partner, otherwise we will use
+	 * already free'd lock during freeing second bev, see next example:
+	 *
+	 * bev1->own_lock = 1
+	 * bev2->own_lock = 0
+	 * bev2->lock = bev1->lock
+	 *
+	 * bufferevent_free(bev1) # refcnt == 0 -> unlink
+	 * bufferevent_free(bev2) # refcnt == 0 -> unlink
+	 *
+	 * event_base_free() -> finilizers -> EVTHREAD_FREE_LOCK(bev1->lock)
+	 *                                 -> BEV_LOCK(bev2->lock) <-- already freed
+	 *
+	 * Where bev1 == pair[0], bev2 == pair[1].
+	 */
+	if (bev_p->unlinked_partner && bev_p->bev.own_lock) {
+		bev_p->unlinked_partner->bev.own_lock = 1;
+		bev_p->bev.own_lock = 0;
+	}
+	bev_p->unlinked_partner = NULL;
+}
+
 static int
 be_pair_flush(struct bufferevent *bev, short iotype,
     enum bufferevent_flush_mode mode)
@@ -320,7 +351,7 @@ const struct bufferevent_ops bufferevent_ops_pair = {
 	be_pair_enable,
 	be_pair_disable,
 	be_pair_unlink,
-	NULL, /* be_pair_destruct, */
+	be_pair_destruct,
 	bufferevent_generic_adj_timeouts_,
 	be_pair_flush,
 	NULL, /* ctrl */
diff --git a/contrib/ntp/sntp/libevent/config.h.in b/contrib/ntp/sntp/libevent/config.h.in
index 7446676..946b11a 100644
--- a/contrib/ntp/sntp/libevent/config.h.in
+++ b/contrib/ntp/sntp/libevent/config.h.in
@@ -24,9 +24,6 @@
 /* Define to 1 if you have the `clock_gettime' function. */
 #undef HAVE_CLOCK_GETTIME
 
-/* Define to 1 if you have the <cthreads.h> header file. */
-#undef HAVE_CTHREADS_H
-
 /* Define to 1 if you have the declaration of `CTL_KERN', and to 0 if you
    don't. */
 #undef HAVE_DECL_CTL_KERN
@@ -109,9 +106,6 @@
 /* Define to 1 if you have the `gettimeofday' function. */
 #undef HAVE_GETTIMEOFDAY
 
-/* if you have GNU Pth */
-#undef HAVE_GNU_PTH
-
 /* Define to 1 if you have the <ifaddrs.h> header file. */
 #undef HAVE_IFADDRS_H
 
@@ -133,24 +127,9 @@
 /* Define if the system has zlib */
 #undef HAVE_LIBZ
 
-/* if you have LinuxThreads */
-#undef HAVE_LINUX_THREADS
-
-/* if you have SunOS LWP package */
-#undef HAVE_LWP
-
-/* Define to 1 if you have the <lwp/lwp.h> header file. */
-#undef HAVE_LWP_LWP_H
-
 /* Define to 1 if you have the `mach_absolute_time' function. */
 #undef HAVE_MACH_ABSOLUTE_TIME
 
-/* define if you have Mach Cthreads */
-#undef HAVE_MACH_CTHREADS
-
-/* Define to 1 if you have the <mach/cthreads.h> header file. */
-#undef HAVE_MACH_CTHREADS_H
-
 /* Define to 1 if you have the <mach/mach_time.h> header file. */
 #undef HAVE_MACH_MACH_TIME_H
 
@@ -175,15 +154,6 @@
 /* Define to 1 if you have the <netinet/tcp.h> header file. */
 #undef HAVE_NETINET_TCP_H
 
-/* if you have NT Event Log */
-#undef HAVE_NT_EVENT_LOG
-
-/* if you have NT Service Manager */
-#undef HAVE_NT_SERVICE_MANAGER
-
-/* if you have NT Threads */
-#undef HAVE_NT_THREADS
-
 /* Define if the system has openssl */
 #undef HAVE_OPENSSL
 
@@ -208,48 +178,15 @@
 /* Define if you have POSIX threads libraries and header files. */
 #undef HAVE_PTHREAD
 
-/* define to pthreads API spec revision */
+/* Define if we have pthreads on this system */
 #undef HAVE_PTHREADS
 
-/* define if you have pthread_detach function */
-#undef HAVE_PTHREAD_DETACH
-
-/* Define to 1 if you have the `pthread_getconcurrency' function. */
-#undef HAVE_PTHREAD_GETCONCURRENCY
-
-/* Define to 1 if you have the <pthread.h> header file. */
-#undef HAVE_PTHREAD_H
-
-/* Define to 1 if you have the `pthread_kill' function. */
-#undef HAVE_PTHREAD_KILL
-
-/* Define to 1 if you have the `pthread_kill_other_threads_np' function. */
-#undef HAVE_PTHREAD_KILL_OTHER_THREADS_NP
-
-/* define if you have pthread_rwlock_destroy function */
-#undef HAVE_PTHREAD_RWLOCK_DESTROY
-
-/* Define to 1 if you have the `pthread_setconcurrency' function. */
-#undef HAVE_PTHREAD_SETCONCURRENCY
-
-/* Define to 1 if you have the `pthread_yield' function. */
-#undef HAVE_PTHREAD_YIELD
-
-/* Define to 1 if you have the <pth.h> header file. */
-#undef HAVE_PTH_H
-
 /* Define to 1 if you have the `putenv' function. */
 #undef HAVE_PUTENV
 
 /* Define to 1 if the system has the type `sa_family_t'. */
 #undef HAVE_SA_FAMILY_T
 
-/* Define to 1 if you have the <sched.h> header file. */
-#undef HAVE_SCHED_H
-
-/* Define to 1 if you have the `sched_yield' function. */
-#undef HAVE_SCHED_YIELD
-
 /* Define to 1 if you have the `select' function. */
 #undef HAVE_SELECT
 
@@ -337,9 +274,6 @@
 /* Define to 1 if the system has the type `struct so_linger'. */
 #undef HAVE_STRUCT_SO_LINGER
 
-/* Define to 1 if you have the <synch.h> header file. */
-#undef HAVE_SYNCH_H
-
 /* Define to 1 if you have the `sysctl' function. */
 #undef HAVE_SYSCTL
 
@@ -403,21 +337,6 @@
 /* Define if TAILQ_FOREACH is defined in <sys/queue.h> */
 #undef HAVE_TAILQFOREACH
 
-/* if you have Solaris LWP (thr) package */
-#undef HAVE_THR
-
-/* Define to 1 if you have the <thread.h> header file. */
-#undef HAVE_THREAD_H
-
-/* Define to 1 if you have the `thr_getconcurrency' function. */
-#undef HAVE_THR_GETCONCURRENCY
-
-/* Define to 1 if you have the `thr_setconcurrency' function. */
-#undef HAVE_THR_SETCONCURRENCY
-
-/* Define to 1 if you have the `thr_yield' function. */
-#undef HAVE_THR_YIELD
-
 /* Define if timeradd is defined in <sys/time.h> */
 #undef HAVE_TIMERADD
 
@@ -466,15 +385,9 @@
 /* Define if kqueue works correctly with pipes */
 #undef HAVE_WORKING_KQUEUE
 
-/* define if select implicitly yields */
-#undef HAVE_YIELDING_SELECT
-
 /* Define to 1 if you have the <zlib.h> header file. */
 #undef HAVE_ZLIB_H
 
-/* define to 1 if library is thread safe */
-#undef LDAP_API_FEATURE_X_OPENLDAP_THREAD_SAFE
-
 /* Define to the sub-directory in which libtool stores uninstalled libraries.
    */
 #undef LT_OBJDIR
@@ -482,9 +395,6 @@
 /* Define to 1 if your C compiler doesn't accept -c and -o together. */
 #undef NO_MINUS_C_MINUS_O
 
-/* define if you have (or want) no threads */
-#undef NO_THREADS
-
 /* Numeric representation of the version */
 #undef NUMERIC_VERSION
 
@@ -509,11 +419,9 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* enable thread safety */
-#undef REENTRANT
-
-/* define if sched_yield yields the entire process */
-#undef REPLACE_BROKEN_YIELD
+/* Define to necessary symbol if this constant uses a non-standard name on
+   your system. */
+#undef PTHREAD_CREATE_JOINABLE
 
 /* The size of `int', as computed by sizeof. */
 #undef SIZEOF_INT
@@ -542,12 +450,6 @@
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
-/* enable thread safety */
-#undef THREADSAFE
-
-/* enable thread safety */
-#undef THREAD_SAFE
-
 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
 #undef TIME_WITH_SYS_TIME
 
@@ -570,18 +472,6 @@
 /* Define to 1 if you need to in order for `stat' and other things to work. */
 #undef _POSIX_SOURCE
 
-/* enable thread safety */
-#undef _REENTRANT
-
-/* enable thread safety */
-#undef _SGI_MP_SOURCE
-
-/* enable thread safety */
-#undef _THREADSAFE
-
-/* enable thread safety */
-#undef _THREAD_SAFE
-
 /* Define to 500 only on HP-UX. */
 #undef _XOPEN_SOURCE
 
diff --git a/contrib/ntp/sntp/libevent/configure b/contrib/ntp/sntp/libevent/configure
index 09d6eed..d2c0780 100755
--- a/contrib/ntp/sntp/libevent/configure
+++ b/contrib/ntp/sntp/libevent/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.68 for libevent 2.1.3-alpha-dev.
+# Generated by GNU Autoconf 2.68 for libevent 2.1.5-beta.
 #
 #
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -567,8 +567,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libevent'
 PACKAGE_TARNAME='libevent'
-PACKAGE_VERSION='2.1.3-alpha-dev'
-PACKAGE_STRING='libevent 2.1.3-alpha-dev'
+PACKAGE_VERSION='2.1.5-beta'
+PACKAGE_STRING='libevent 2.1.5-beta'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
@@ -619,6 +619,8 @@ PTHREADS_FALSE
 PTHREADS_TRUE
 PTHREAD_CFLAGS
 PTHREAD_LIBS
+PTHREAD_CC
+acx_pthread_config
 SIGNAL_SUPPORT_FALSE
 SIGNAL_SUPPORT_TRUE
 EVPORT_BACKEND_FALSE
@@ -655,6 +657,8 @@ ZLIB_REGRESS_TRUE
 ZLIB_LIBS
 BUILD_REGRESS_FALSE
 BUILD_REGRESS_TRUE
+BUILD_SAMPLES_FALSE
+BUILD_SAMPLES_TRUE
 LIBTOOL_DEPS
 OTOOL64
 OTOOL
@@ -778,6 +782,7 @@ enable_openssl
 enable_debug_mode
 enable_libevent_install
 enable_libevent_regress
+enable_samples
 enable_function_sections
 enable_verbose_debug
 enable_shared
@@ -788,8 +793,6 @@ with_gnu_ld
 with_sysroot
 enable_libtool_lock
 enable_largefile
-with_threads
-with_yielding_select
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1342,7 +1345,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libevent 2.1.3-alpha-dev to adapt to many kinds of systems.
+\`configure' configures libevent 2.1.5-beta to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1412,7 +1415,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libevent 2.1.3-alpha-dev:";;
+     short | recursive ) echo "Configuration of libevent 2.1.5-beta:";;
    esac
   cat <<\_ACEOF
 
@@ -1437,6 +1440,8 @@ Optional Features:
 
   --disable-libevent-regress, skip regress in make check
 
+  --disable-samples, skip building of sample programs
+
   --enable-function-sections, make static library allow smaller binaries with --gc-sections
 
   --enable-verbose-debug, verbose debug logging
@@ -1456,8 +1461,6 @@ Optional Packages:
   --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
   --with-sysroot=DIR Search for dependent libraries within DIR
                         (or the compiler's sysroot if not specified).
-  --with-threads	  with threads [auto]
-  --with-yielding-select  with yielding select [auto]
 
 Some influential environment variables:
   CC          C compiler command
@@ -1535,7 +1538,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libevent configure 2.1.3-alpha-dev
+libevent configure 2.1.5-beta
 generated by GNU Autoconf 2.68
 
 Copyright (C) 2010 Free Software Foundation, Inc.
@@ -2235,7 +2238,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libevent $as_me 2.1.3-alpha-dev, which was
+It was created by libevent $as_me 2.1.5-beta, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
@@ -2616,7 +2619,6 @@ ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
 ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
-
 am__api_version='1.11'
 
 # Find a good install program.  We prefer a C program (faster),
@@ -3055,7 +3057,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libevent'
- VERSION='2.1.3-alpha-dev'
+ VERSION='2.1.5-beta'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -3110,7 +3112,7 @@ AM_BACKSLASH='\'
 ac_config_headers="$ac_config_headers config.h evconfig-private.h:evconfig-private.h.in"
 
 
-$as_echo "#define NUMERIC_VERSION 0x02010301" >>confdefs.h
+$as_echo "#define NUMERIC_VERSION 0x02010500" >>confdefs.h
 
 
 if test "$prefix" = "NONE"; then
@@ -5004,6 +5006,13 @@ else
   enable_libevent_regress=yes
 fi
 
+# Check whether --enable-samples was given.
+if test "${enable_samples+set}" = set; then :
+  enableval=$enable_samples;
+else
+  enable_samples=yes
+fi
+
 # Check whether --enable-function-sections was given.
 if test "${enable_function_sections+set}" = set; then :
   enableval=$enable_function_sections;
@@ -12071,6 +12080,14 @@ CC="$lt_save_CC"
 
 
 
+ if test "$enable_samples" = "yes"; then
+  BUILD_SAMPLES_TRUE=
+  BUILD_SAMPLES_FALSE='#'
+else
+  BUILD_SAMPLES_TRUE='#'
+  BUILD_SAMPLES_FALSE=
+fi
+
  if test "$enable_libevent_regress" = "yes"; then
   BUILD_REGRESS_TRUE=
   BUILD_REGRESS_FALSE='#'
@@ -14825,58 +14842,127 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-# OpenLDAP --with-threads
-
-# Check whether --with-threads was given.
-if test "${with_threads+set}" = set; then :
-  withval=$with_threads;
-	ol_arg=invalid
-	for ol_val in auto nt posix mach pth lwp yes no manual  ; do
-		if test "$withval" = "$ol_val" ; then
-			ol_arg="$ol_val"
-		fi
-	done
-	if test "$ol_arg" = "invalid" ; then
-		as_fn_error $? "bad value $withval for --with-threads" "$LINENO" 5
-	fi
-	ol_with_threads="$ol_arg"
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS" >&5
+$as_echo_n "checking for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS... " >&6; }
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
 
-else
-  	ol_with_threads="auto"
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char pthread_join ();
+int
+main ()
+{
+return pthread_join ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  acx_pthread_ok=yes
 fi
-# end --with-threads
-
-
-case "$ol_with_threads$host" in
- auto*-*-solaris2.[0-6])
-        ol_with_threads=no
-    ;;
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $acx_pthread_ok" >&5
+$as_echo "$acx_pthread_ok" >&6; }
+        if test x"$acx_pthread_ok" = xno; then
+                PTHREAD_LIBS=""
+                PTHREAD_CFLAGS=""
+        fi
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try.  Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important.  Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+#       other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+#      doesn't hurt to check since this sometimes defines pthreads too;
+#      also defines -D_REENTRANT)
+#      ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+        *solaris*)
+
+        # On Solaris (at least, for some versions), libc contains stubbed
+        # (non-functional) versions of the pthreads routines, so link-based
+        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
+        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
+        # a function called by this macro, so we could check for that, but
+        # who knows whether they'll stub that too in a future libc.)  So,
+        # we'll just look for -pthreads and -lpthread first:
+
+        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+        ;;
 esac
 
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
 
-ol_aix_threads=no
-case "$host" in
-*-*-aix*) 	if test -z "$CC" ; then
-		case "$ol_with_threads" in
-		auto | yes |  posix) ol_aix_threads=yes ;;
-		esac
-	fi
-;;
-esac
+        case $flag in
+                none)
+                { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthreads work without any flags" >&5
+$as_echo_n "checking whether pthreads work without any flags... " >&6; }
+                ;;
 
-if test $ol_aix_threads = yes ; then
-	if test -z "${CC}" ; then
-		for ac_prog in cc_r xlc_r cc
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
+                -*)
+                { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether pthreads work with $flag" >&5
+$as_echo_n "checking whether pthreads work with $flag... " >&6; }
+                PTHREAD_CFLAGS="$flag"
+                ;;
+
+		pthread-config)
+		# Extract the first word of "pthread-config", so it can be a program name with args.
+set dummy pthread-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CC+:} false; then :
+if ${ac_cv_prog_acx_pthread_config+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
+  if test -n "$acx_pthread_config"; then
+  ac_cv_prog_acx_pthread_config="$acx_pthread_config" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
@@ -14885,7 +14971,7 @@ do
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
   if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_prog_CC="$ac_prog"
+    ac_cv_prog_acx_pthread_config="yes"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
@@ -14893,4378 +14979,210 @@ done
   done
 IFS=$as_save_IFS
 
+  test -z "$ac_cv_prog_acx_pthread_config" && ac_cv_prog_acx_pthread_config="no"
 fi
 fi
-CC=$ac_cv_prog_CC
-if test -n "$CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
+acx_pthread_config=$ac_cv_prog_acx_pthread_config
+if test -n "$acx_pthread_config"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $acx_pthread_config" >&5
+$as_echo "$acx_pthread_config" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 fi
 
 
-  test -n "$CC" && break
-done
-
-
-		if test "$CC" = cc ; then
-						if test $ol_with_threads != auto ; then
-				as_fn_error $? "--with-threads requires cc_r (or other suitable compiler) on AIX" "$LINENO" 5
-			else
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: disabling threads, no cc_r on AIX" >&5
-$as_echo "$as_me: WARNING: disabling threads, no cc_r on AIX" >&2;}
-			fi
-			ol_with_threads=no
-  		fi
-	fi
-
-	case ${CC} in cc_r | xlc_r)
-		ol_with_threads=posix
-		ol_cv_pthread_create=yes
+		if test x"$acx_pthread_config" = xno; then continue; fi
+		PTHREAD_CFLAGS="`pthread-config --cflags`"
+		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
 		;;
-	esac
-fi
-
-ol_link_threads=no
-# OpenLDAP --with-yielding_select
-
-# Check whether --with-yielding_select was given.
-if test "${with_yielding_select+set}" = set; then :
-  withval=$with_yielding_select;
-	ol_arg=invalid
-	for ol_val in auto yes no manual  ; do
-		if test "$withval" = "$ol_val" ; then
-			ol_arg="$ol_val"
-		fi
-	done
-	if test "$ol_arg" = "invalid" ; then
-		as_fn_error $? "bad value $withval for --with-yielding_select" "$LINENO" 5
-	fi
-	ol_with_yielding_select="$ol_arg"
-
-else
-  	ol_with_yielding_select="auto"
-fi
-# end --with-yielding_select
-
-
-case $ol_with_threads in auto | yes | nt)
-
-
-	ac_fn_c_check_func "$LINENO" "_beginthread" "ac_cv_func__beginthread"
-if test "x$ac_cv_func__beginthread" = xyes; then :
-
-fi
-
-
-	if test $ac_cv_func__beginthread = yes ; then
-
-$as_echo "#define HAVE_NT_THREADS 1" >>confdefs.h
-
-		ol_cv_nt_threads=yes
-	fi
-
-
-	if test "$ol_cv_nt_threads" = yes ; then
-		ol_link_threads=nt
-		ol_with_threads=found
-		ol_with_yielding_select=yes
-
-
-$as_echo "#define HAVE_NT_SERVICE_MANAGER 1" >>confdefs.h
-
-
-$as_echo "#define HAVE_NT_EVENT_LOG 1" >>confdefs.h
-
-	fi
-
-	if test $ol_with_threads = nt ; then
-		as_fn_error $? "could not locate NT Threads" "$LINENO" 5
-	fi
-	;;
-esac
-
-case $ol_with_threads in auto | yes | posix)
-
-	for ac_header in pthread.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "pthread.h" "ac_cv_header_pthread_h" "$ac_includes_default"
-if test "x$ac_cv_header_pthread_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREAD_H 1
-_ACEOF
-
-fi
-
-done
-
-
-	if test $ac_cv_header_pthread_h = yes ; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking POSIX thread version" >&5
-$as_echo_n "checking POSIX thread version... " >&6; }
-if ${ol_cv_pthread_version+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#		include <pthread.h>
-
-int
-main ()
-{
-
-		int i = PTHREAD_CREATE_JOINABLE;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <pthread.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "pthread_detach" >/dev/null 2>&1; then :
-  ol_cv_pthread_version=10
-else
-  ol_cv_pthread_version=8
-fi
-rm -f conftest*
-
-else
-
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#		include <pthread.h>
-#		ifdef PTHREAD_CREATE_UNDETACHED
-		draft7
-#		endif
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "draft7" >/dev/null 2>&1; then :
-  ol_cv_pthread_version=7
-else
-
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <pthread.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "pthread_attr_init" >/dev/null 2>&1; then :
-  ol_cv_pthread_version=6
-else
-
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#		include <pthread.h>
-#ifdef		PTHREAD_MUTEX_INITIALIZER
-		draft5
-#endif
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "draft5" >/dev/null 2>&1; then :
-  ol_cv_pthread_version=5
-else
-  ol_cv_pthread_version=4
-fi
-rm -f conftest*
-
-fi
-rm -f conftest*
-
-fi
-rm -f conftest*
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_version" >&5
-$as_echo "$ol_cv_pthread_version" >&6; }
-
-
-		if test $ol_cv_pthread_version != 0 ; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREADS $ol_cv_pthread_version
-_ACEOF
-
-		else
-			as_fn_error $? "unknown pthread version" "$LINENO" 5
-		fi
-
-		# consider threads found
-		ol_with_threads=found
-
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LinuxThreads pthread.h" >&5
-$as_echo_n "checking for LinuxThreads pthread.h... " >&6; }
-if ${ol_cv_header_linux_threads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <pthread.h>
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "pthread_kill_other_threads_np" >/dev/null 2>&1; then :
-  ol_cv_header_linux_threads=yes
-else
-  ol_cv_header_linux_threads=no
-fi
-rm -f conftest*
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_header_linux_threads" >&5
-$as_echo "$ol_cv_header_linux_threads" >&6; }
-	if test $ol_cv_header_linux_threads = yes; then
-
-$as_echo "#define HAVE_LINUX_THREADS 1" >>confdefs.h
-
-	fi
-
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU Pth pthread.h" >&5
-$as_echo_n "checking for GNU Pth pthread.h... " >&6; }
-if ${ol_cv_header_gnu_pth_pthread_h+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <pthread.h>
-#ifdef _POSIX_THREAD_IS_GNU_PTH
-	__gnu_pth__;
-#endif
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "__gnu_pth__" >/dev/null 2>&1; then :
-  ol_cv_header_gnu_pth_pthread_h=yes
-else
-  ol_cv_header_gnu_pth_pthread_h=no
-fi
-rm -f conftest*
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_header_gnu_pth_pthread_h" >&5
-$as_echo "$ol_cv_header_gnu_pth_pthread_h" >&6; }
-
-
-		if test $ol_cv_header_gnu_pth_pthread_h = no ; then
-			for ac_header in sched.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "sched.h" "ac_cv_header_sched_h" "$ac_includes_default"
-if test "x$ac_cv_header_sched_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_SCHED_H 1
-_ACEOF
-
-fi
-
-done
-
-		fi
-
-
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in default libraries" >&5
-$as_echo_n "checking for pthread_create in default libraries... " >&6; }
-if ${ol_cv_pthread_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-			if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_create=yes
-else
-  ol_cv_pthread_create=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_create=yes
-else
-  ol_cv_pthread_create=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_create" >&5
-$as_echo "$ol_cv_pthread_create" >&6; }
-
-		if test $ol_cv_pthread_create != no ; then
-			ol_link_threads=posix
-			ol_link_pthreads=""
-		fi
-
-		# Pthread try link: -kthread (ol_cv_pthread_kthread)
-if test "$ol_link_threads" = no ; then
-	# try -kthread
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -kthread" >&5
-$as_echo_n "checking for pthread link with -kthread... " >&6; }
-if ${ol_cv_pthread_kthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-kthread $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_kthread=yes
-else
-  ol_cv_pthread_kthread=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_kthread=yes
-else
-  ol_cv_pthread_kthread=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_kthread" >&5
-$as_echo "$ol_cv_pthread_kthread" >&6; }
-
-	if test $ol_cv_pthread_kthread = yes ; then
-		ol_link_pthreads="-kthread"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -pthread (ol_cv_pthread_pthread)
-if test "$ol_link_threads" = no ; then
-	# try -pthread
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -pthread" >&5
-$as_echo_n "checking for pthread link with -pthread... " >&6; }
-if ${ol_cv_pthread_pthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-pthread $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_pthread=yes
-else
-  ol_cv_pthread_pthread=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_pthread=yes
-else
-  ol_cv_pthread_pthread=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_pthread" >&5
-$as_echo "$ol_cv_pthread_pthread" >&6; }
-
-	if test $ol_cv_pthread_pthread = yes ; then
-		ol_link_pthreads="-pthread"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -pthreads (ol_cv_pthread_pthreads)
-if test "$ol_link_threads" = no ; then
-	# try -pthreads
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -pthreads" >&5
-$as_echo_n "checking for pthread link with -pthreads... " >&6; }
-if ${ol_cv_pthread_pthreads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-pthreads $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_pthreads=yes
-else
-  ol_cv_pthread_pthreads=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_pthreads=yes
-else
-  ol_cv_pthread_pthreads=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
 
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_pthreads" >&5
-$as_echo "$ol_cv_pthread_pthreads" >&6; }
-
-	if test $ol_cv_pthread_pthreads = yes ; then
-		ol_link_pthreads="-pthreads"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -mthreads (ol_cv_pthread_mthreads)
-if test "$ol_link_threads" = no ; then
-	# try -mthreads
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -mthreads" >&5
-$as_echo_n "checking for pthread link with -mthreads... " >&6; }
-if ${ol_cv_pthread_mthreads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-mthreads $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_mthreads=yes
-else
-  ol_cv_pthread_mthreads=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_mthreads=yes
-else
-  ol_cv_pthread_mthreads=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_mthreads" >&5
-$as_echo "$ol_cv_pthread_mthreads" >&6; }
-
-	if test $ol_cv_pthread_mthreads = yes ; then
-		ol_link_pthreads="-mthreads"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -thread (ol_cv_pthread_thread)
-if test "$ol_link_threads" = no ; then
-	# try -thread
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -thread" >&5
-$as_echo_n "checking for pthread link with -thread... " >&6; }
-if ${ol_cv_pthread_thread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-thread $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+                *)
+                { $as_echo "$as_me:${as_lineno-$LINENO}: checking for the pthreads library -l$flag" >&5
+$as_echo_n "checking for the pthreads library -l$flag... " >&6; }
+                PTHREAD_LIBS="-l$flag"
+                ;;
+        esac
+
+        save_LIBS="$LIBS"
+        save_CFLAGS="$CFLAGS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Check for various functions.  We must include pthread.h,
+        # since some functions may be macros.  (On the Sequent, we
+        # need a special flag -Kthread to make this header compile.)
+        # We check for pthread_join because it is in -lpthread on IRIX
+        # while pthread_create is in libc.  We check for pthread_attr_init
+        # due to DEC craziness with -lpthreads.  We check for
+        # pthread_cleanup_push because it is one of the few pthread
+        # functions on Solaris that doesn't have a non-functional libc stub.
+        # We try pthread_create on general principles.
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-
-/* pthread test headers */
 #include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
 int
 main ()
 {
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
+pthread_t th; pthread_join(th, 0);
+                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
+                     pthread_create(0,0,0,0); pthread_cleanup_pop(0);
   ;
   return 0;
 }
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_thread=yes
-else
-  ol_cv_pthread_thread=no
+  acx_pthread_ok=yes
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
 
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_thread=yes
-else
-  ol_cv_pthread_thread=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_thread" >&5
-$as_echo "$ol_cv_pthread_thread" >&6; }
-
-	if test $ol_cv_pthread_thread = yes ; then
-		ol_link_pthreads="-thread"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		# Pthread try link: -lpthread -lmach -lexc -lc_r (ol_cv_pthread_lpthread_lmach_lexc_lc_r)
-if test "$ol_link_threads" = no ; then
-	# try -lpthread -lmach -lexc -lc_r
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthread -lmach -lexc -lc_r" >&5
-$as_echo_n "checking for pthread link with -lpthread -lmach -lexc -lc_r... " >&6; }
-if ${ol_cv_pthread_lpthread_lmach_lexc_lc_r+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthread -lmach -lexc -lc_r $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lpthread_lmach_lexc_lc_r=yes
-else
-  ol_cv_pthread_lpthread_lmach_lexc_lc_r=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lpthread_lmach_lexc_lc_r=yes
-else
-  ol_cv_pthread_lpthread_lmach_lexc_lc_r=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lpthread_lmach_lexc_lc_r" >&5
-$as_echo "$ol_cv_pthread_lpthread_lmach_lexc_lc_r" >&6; }
-
-	if test $ol_cv_pthread_lpthread_lmach_lexc_lc_r = yes ; then
-		ol_link_pthreads="-lpthread -lmach -lexc -lc_r"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -lpthread -lmach -lexc (ol_cv_pthread_lpthread_lmach_lexc)
-if test "$ol_link_threads" = no ; then
-	# try -lpthread -lmach -lexc
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthread -lmach -lexc" >&5
-$as_echo_n "checking for pthread link with -lpthread -lmach -lexc... " >&6; }
-if ${ol_cv_pthread_lpthread_lmach_lexc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthread -lmach -lexc $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lpthread_lmach_lexc=yes
-else
-  ol_cv_pthread_lpthread_lmach_lexc=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lpthread_lmach_lexc=yes
-else
-  ol_cv_pthread_lpthread_lmach_lexc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lpthread_lmach_lexc" >&5
-$as_echo "$ol_cv_pthread_lpthread_lmach_lexc" >&6; }
-
-	if test $ol_cv_pthread_lpthread_lmach_lexc = yes ; then
-		ol_link_pthreads="-lpthread -lmach -lexc"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		# Pthread try link: -lpthread -Wl,-woff,85 (ol_cv_pthread_lib_lpthread_woff)
-if test "$ol_link_threads" = no ; then
-	# try -lpthread -Wl,-woff,85
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthread -Wl,-woff,85" >&5
-$as_echo_n "checking for pthread link with -lpthread -Wl,-woff,85... " >&6; }
-if ${ol_cv_pthread_lib_lpthread_woff+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthread -Wl,-woff,85 $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lib_lpthread_woff=yes
-else
-  ol_cv_pthread_lib_lpthread_woff=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lib_lpthread_woff=yes
-else
-  ol_cv_pthread_lib_lpthread_woff=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lib_lpthread_woff" >&5
-$as_echo "$ol_cv_pthread_lib_lpthread_woff" >&6; }
-
-	if test $ol_cv_pthread_lib_lpthread_woff = yes ; then
-		ol_link_pthreads="-lpthread -Wl,-woff,85"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		# Pthread try link: -lpthread (ol_cv_pthread_lpthread)
-if test "$ol_link_threads" = no ; then
-	# try -lpthread
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthread" >&5
-$as_echo_n "checking for pthread link with -lpthread... " >&6; }
-if ${ol_cv_pthread_lpthread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthread $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lpthread=yes
-else
-  ol_cv_pthread_lpthread=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lpthread=yes
-else
-  ol_cv_pthread_lpthread=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lpthread" >&5
-$as_echo "$ol_cv_pthread_lpthread" >&6; }
-
-	if test $ol_cv_pthread_lpthread = yes ; then
-		ol_link_pthreads="-lpthread"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -lc_r (ol_cv_pthread_lc_r)
-if test "$ol_link_threads" = no ; then
-	# try -lc_r
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lc_r" >&5
-$as_echo_n "checking for pthread link with -lc_r... " >&6; }
-if ${ol_cv_pthread_lc_r+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lc_r $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
 
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lc_r=yes
-else
-  ol_cv_pthread_lc_r=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lc_r=yes
-else
-  ol_cv_pthread_lc_r=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lc_r" >&5
-$as_echo "$ol_cv_pthread_lc_r" >&6; }
-
-	if test $ol_cv_pthread_lc_r = yes ; then
-		ol_link_pthreads="-lc_r"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		# Pthread try link: -threads (ol_cv_pthread_threads)
-if test "$ol_link_threads" = no ; then
-	# try -threads
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -threads" >&5
-$as_echo_n "checking for pthread link with -threads... " >&6; }
-if ${ol_cv_pthread_threads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-threads $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_threads=yes
-else
-  ol_cv_pthread_threads=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_threads=yes
-else
-  ol_cv_pthread_threads=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_threads" >&5
-$as_echo "$ol_cv_pthread_threads" >&6; }
-
-	if test $ol_cv_pthread_threads = yes ; then
-		ol_link_pthreads="-threads"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		# Pthread try link: -lpthreads -lmach -lexc -lc_r (ol_cv_pthread_lpthreads_lmach_lexc_lc_r)
-if test "$ol_link_threads" = no ; then
-	# try -lpthreads -lmach -lexc -lc_r
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthreads -lmach -lexc -lc_r" >&5
-$as_echo_n "checking for pthread link with -lpthreads -lmach -lexc -lc_r... " >&6; }
-if ${ol_cv_pthread_lpthreads_lmach_lexc_lc_r+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthreads -lmach -lexc -lc_r $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lpthreads_lmach_lexc_lc_r=yes
-else
-  ol_cv_pthread_lpthreads_lmach_lexc_lc_r=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lpthreads_lmach_lexc_lc_r=yes
-else
-  ol_cv_pthread_lpthreads_lmach_lexc_lc_r=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lpthreads_lmach_lexc_lc_r" >&5
-$as_echo "$ol_cv_pthread_lpthreads_lmach_lexc_lc_r" >&6; }
-
-	if test $ol_cv_pthread_lpthreads_lmach_lexc_lc_r = yes ; then
-		ol_link_pthreads="-lpthreads -lmach -lexc -lc_r"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -lpthreads -lmach -lexc (ol_cv_pthread_lpthreads_lmach_lexc)
-if test "$ol_link_threads" = no ; then
-	# try -lpthreads -lmach -lexc
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthreads -lmach -lexc" >&5
-$as_echo_n "checking for pthread link with -lpthreads -lmach -lexc... " >&6; }
-if ${ol_cv_pthread_lpthreads_lmach_lexc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthreads -lmach -lexc $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lpthreads_lmach_lexc=yes
-else
-  ol_cv_pthread_lpthreads_lmach_lexc=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lpthreads_lmach_lexc=yes
-else
-  ol_cv_pthread_lpthreads_lmach_lexc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lpthreads_lmach_lexc" >&5
-$as_echo "$ol_cv_pthread_lpthreads_lmach_lexc" >&6; }
-
-	if test $ol_cv_pthread_lpthreads_lmach_lexc = yes ; then
-		ol_link_pthreads="-lpthreads -lmach -lexc"
-		ol_link_threads=posix
-	fi
-fi
-
-		# Pthread try link: -lpthreads -lexc (ol_cv_pthread_lpthreads_lexc)
-if test "$ol_link_threads" = no ; then
-	# try -lpthreads -lexc
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthreads -lexc" >&5
-$as_echo_n "checking for pthread link with -lpthreads -lexc... " >&6; }
-if ${ol_cv_pthread_lpthreads_lexc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthreads -lexc $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lpthreads_lexc=yes
-else
-  ol_cv_pthread_lpthreads_lexc=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lpthreads_lexc=yes
-else
-  ol_cv_pthread_lpthreads_lexc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lpthreads_lexc" >&5
-$as_echo "$ol_cv_pthread_lpthreads_lexc" >&6; }
-
-	if test $ol_cv_pthread_lpthreads_lexc = yes ; then
-		ol_link_pthreads="-lpthreads -lexc"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		# Pthread try link: -lpthreads (ol_cv_pthread_lib_lpthreads)
-if test "$ol_link_threads" = no ; then
-	# try -lpthreads
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread link with -lpthreads" >&5
-$as_echo_n "checking for pthread link with -lpthreads... " >&6; }
-if ${ol_cv_pthread_lib_lpthreads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		# save the flags
-		ol_LIBS="$LIBS"
-		LIBS="-lpthreads $LIBS"
-
-		if test "$cross_compiling" = yes; then :
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-int
-main ()
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_pthread_lib_lpthreads=yes
-else
-  ol_cv_pthread_lib_lpthreads=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_lib_lpthreads=yes
-else
-  ol_cv_pthread_lib_lpthreads=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-
-		# restore the LIBS
-		LIBS="$ol_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_lib_lpthreads" >&5
-$as_echo "$ol_cv_pthread_lib_lpthreads" >&6; }
-
-	if test $ol_cv_pthread_lib_lpthreads = yes ; then
-		ol_link_pthreads="-lpthreads"
-		ol_link_threads=posix
-	fi
-fi
-
-
-		if test $ol_link_threads != no ; then
-			LTHREAD_LIBS="$LTHREAD_LIBS $ol_link_pthreads"
-
-						save_CPPFLAGS="$CPPFLAGS"
-			save_LIBS="$LIBS"
-			LIBS="$LTHREAD_LIBS $LIBS"
-
-												for ac_func in sched_yield pthread_yield thr_yield
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-			if test $ac_cv_func_sched_yield = no &&
-			   test $ac_cv_func_pthread_yield = no &&
-			   test $ac_cv_func_thr_yield = no ; then
-								{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sched_yield in -lrt" >&5
-$as_echo_n "checking for sched_yield in -lrt... " >&6; }
-if ${ac_cv_lib_rt_sched_yield+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lrt  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char sched_yield ();
-int
-main ()
-{
-return sched_yield ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_rt_sched_yield=yes
-else
-  ac_cv_lib_rt_sched_yield=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_sched_yield" >&5
-$as_echo "$ac_cv_lib_rt_sched_yield" >&6; }
-if test "x$ac_cv_lib_rt_sched_yield" = xyes; then :
-  LTHREAD_LIBS="$LTHREAD_LIBS -lrt"
-
-$as_echo "#define HAVE_SCHED_YIELD 1" >>confdefs.h
-
-					ac_cv_func_sched_yield=yes
-else
-  ac_cv_func_sched_yield=no
-fi
-
-			fi
-			if test $ac_cv_func_sched_yield = no &&
-			   test $ac_cv_func_pthread_yield = no &&
-			   test "$ac_cv_func_thr_yield" = no ; then
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not locate sched_yield() or pthread_yield()" >&5
-$as_echo "$as_me: WARNING: could not locate sched_yield() or pthread_yield()" >&2;}
-			fi
-
-						for ac_func in pthread_kill
-do :
-  ac_fn_c_check_func "$LINENO" "pthread_kill" "ac_cv_func_pthread_kill"
-if test "x$ac_cv_func_pthread_kill" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREAD_KILL 1
-_ACEOF
-
-fi
-done
-
-
-									{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_rwlock_destroy with <pthread.h>" >&5
-$as_echo_n "checking for pthread_rwlock_destroy with <pthread.h>... " >&6; }
-if ${ol_cv_func_pthread_rwlock_destroy+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-								cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <pthread.h>
-pthread_rwlock_t rwlock;
-
-int
-main ()
-{
-pthread_rwlock_destroy(&rwlock);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_func_pthread_rwlock_destroy=yes
-else
-  ol_cv_func_pthread_rwlock_destroy=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_func_pthread_rwlock_destroy" >&5
-$as_echo "$ol_cv_func_pthread_rwlock_destroy" >&6; }
-			if test $ol_cv_func_pthread_rwlock_destroy = yes ; then
-
-$as_echo "#define HAVE_PTHREAD_RWLOCK_DESTROY 1" >>confdefs.h
-
-			fi
-
-									{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_detach with <pthread.h>" >&5
-$as_echo_n "checking for pthread_detach with <pthread.h>... " >&6; }
-if ${ol_cv_func_pthread_detach+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-								cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <pthread.h>
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-int
-main ()
-{
-pthread_detach(NULL);
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_func_pthread_detach=yes
-else
-  ol_cv_func_pthread_detach=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_func_pthread_detach" >&5
-$as_echo "$ol_cv_func_pthread_detach" >&6; }
-
-			if test $ol_cv_func_pthread_detach = no ; then
-				as_fn_error $? "could not locate pthread_detach()" "$LINENO" 5
-			fi
-
-
-$as_echo "#define HAVE_PTHREAD_DETACH 1" >>confdefs.h
-
-
-						for ac_func in \
-				pthread_setconcurrency \
-				pthread_getconcurrency \
-				thr_setconcurrency \
-				thr_getconcurrency \
-
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-
-	for ac_func in pthread_kill_other_threads_np
-do :
-  ac_fn_c_check_func "$LINENO" "pthread_kill_other_threads_np" "ac_cv_func_pthread_kill_other_threads_np"
-if test "x$ac_cv_func_pthread_kill_other_threads_np" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTHREAD_KILL_OTHER_THREADS_NP 1
-_ACEOF
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $acx_pthread_ok" >&5
+$as_echo "$acx_pthread_ok" >&6; }
+        if test "x$acx_pthread_ok" = xyes; then
+                break;
+        fi
 
-fi
+        PTHREAD_LIBS=""
+        PTHREAD_CFLAGS=""
 done
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LinuxThreads implementation" >&5
-$as_echo_n "checking for LinuxThreads implementation... " >&6; }
-if ${ol_cv_sys_linux_threads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ol_cv_sys_linux_threads=$ac_cv_func_pthread_kill_other_threads_np
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_sys_linux_threads" >&5
-$as_echo "$ol_cv_sys_linux_threads" >&6; }
-
-
-
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LinuxThreads consistency" >&5
-$as_echo_n "checking for LinuxThreads consistency... " >&6; }
-if ${ol_cv_linux_threads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		if test $ol_cv_header_linux_threads = yes &&
-		   test $ol_cv_sys_linux_threads = yes; then
-			ol_cv_linux_threads=yes
-		elif test $ol_cv_header_linux_threads = no &&
-		     test $ol_cv_sys_linux_threads = no; then
-			ol_cv_linux_threads=no
-		else
-			ol_cv_linux_threads=error
-		fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_linux_threads" >&5
-$as_echo "$ol_cv_linux_threads" >&6; }
-
-
-			if test $ol_cv_linux_threads = error; then
-				as_fn_error $? "LinuxThreads header/library mismatch" "$LINENO" 5;
-			fi
-
-			{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if pthread_create() works" >&5
-$as_echo_n "checking if pthread_create() works... " >&6; }
-if ${ol_cv_pthread_create_works+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-			if test "$cross_compiling" = yes; then :
-  				ol_cv_pthread_create_works=yes
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-/* pthread test headers */
-#include <pthread.h>
-#if HAVE_PTHREADS < 7
-#include <errno.h>
-#endif
-#ifndef NULL
-#define NULL (void*)0
-#endif
-
-static void *task(p)
-	void *p;
-{
-	return (void *) (p == NULL);
-}
-
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-
-	/* pthread test function */
-#ifndef PTHREAD_CREATE_DETACHED
-#define	PTHREAD_CREATE_DETACHED	1
-#endif
-	pthread_t t;
-	int status;
-	int detach = PTHREAD_CREATE_DETACHED;
-
-#if HAVE_PTHREADS > 4
-	/* Final pthreads */
-	pthread_attr_t attr;
-
-	status = pthread_attr_init(&attr);
-	if( status ) return status;
-
-#if HAVE_PTHREADS < 7
-	status = pthread_attr_setdetachstate(&attr, &detach);
-	if( status < 0 ) status = errno;
-#else
-	status = pthread_attr_setdetachstate(&attr, detach);
-#endif
-	if( status ) return status;
-	status = pthread_create( &t, &attr, task, NULL );
-#if HAVE_PTHREADS < 7
-	if( status < 0 ) status = errno;
-#endif
-	if( status ) return status;
-#else
-	/* Draft 4 pthreads */
-	status = pthread_create( &t, pthread_attr_default, task, NULL );
-	if( status ) return errno;
-
-	/* give thread a chance to complete */
-	/* it should remain joinable and hence detachable */
-	sleep( 1 );
-
-	status = pthread_detach( &t );
-	if( status ) return errno;
-#endif
-
-#ifdef HAVE_LINUX_THREADS
-	pthread_kill_other_threads_np();
-#endif
-
-	return 0;
-
-}
-
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_create_works=yes
-else
-  ol_cv_pthread_create_works=no
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_create_works" >&5
-$as_echo "$ol_cv_pthread_create_works" >&6; }
-
-			if test $ol_cv_pthread_create_works = no ; then
-				as_fn_error $? "pthread_create is not usable, check environment settings" "$LINENO" 5
-			fi
-
-			ol_replace_broken_yield=no
-
-			if test $ol_replace_broken_yield = yes ; then
-
-$as_echo "#define REPLACE_BROKEN_YIELD 1" >>confdefs.h
 
-			fi
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
 
-						if test x$ol_with_yielding_select = xauto ; then
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if select yields when using pthreads" >&5
-$as_echo_n "checking if select yields when using pthreads... " >&6; }
-if ${ol_cv_pthread_select_yields+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-				if test "$cross_compiling" = yes; then :
-  ol_cv_pthread_select_yields=cross
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for joinable pthread attribute" >&5
+$as_echo_n "checking for joinable pthread attribute... " >&6; }
+	attr_name=unknown
+	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+	    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <unistd.h>
 #include <pthread.h>
-#ifndef NULL
-#define NULL (void*) 0
-#endif
-
-static int fildes[2];
-
-static void *task(p)
-	void *p;
-{
-	int i;
-	struct timeval tv;
-
-	fd_set rfds;
-
-	tv.tv_sec=10;
-	tv.tv_usec=0;
-
-	FD_ZERO(&rfds);
-	FD_SET(fildes[0], &rfds);
-
-	/* we're not interested in any fds */
-	i = select(FD_SETSIZE, &rfds, NULL, NULL, &tv);
-
-	if(i < 0) {
-		perror("select");
-		exit(10);
-	}
-
-	exit(0); /* if we exit here, the select blocked the whole process */
-}
-
-int main(argc, argv)
-	int argc;
-	char **argv;
-{
-	pthread_t t;
-
-	/* create a pipe to select */
-	if(pipe(&fildes[0])) {
-		perror("select");
-		exit(1);
-	}
-
-#ifdef HAVE_PTHREAD_SETCONCURRENCY
-	(void) pthread_setconcurrency(2);
-#else
-#ifdef HAVE_THR_SETCONCURRENCY
-	/* Set Solaris LWP concurrency to 2 */
-	thr_setconcurrency(2);
-#endif
-#endif
-
-#if HAVE_PTHREADS < 6
-	pthread_create(&t, pthread_attr_default, task, NULL);
-#else
-	pthread_create(&t, NULL, task, NULL);
-#endif
-
-	/* make sure task runs first */
-#ifdef HAVE_THR_YIELD
-	thr_yield();
-#elif defined( HAVE_SCHED_YIELD )
-	sched_yield();
-#elif defined( HAVE_PTHREAD_YIELD )
-	pthread_yield();
-#endif
-
-	exit(2);
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  ol_cv_pthread_select_yields=no
-else
-  ol_cv_pthread_select_yields=yes
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_pthread_select_yields" >&5
-$as_echo "$ol_cv_pthread_select_yields" >&6; }
-
-				if test $ol_cv_pthread_select_yields = cross ; then
-					as_fn_error $? "crossing compiling: use --with-yielding-select=yes|no|manual" "$LINENO" 5
-				fi
-
-				if test $ol_cv_pthread_select_yields = yes ; then
-					ol_with_yielding_select=yes
-				fi
-			fi
-
-						CPPFLAGS="$save_CPPFLAGS"
-			LIBS="$save_LIBS"
-		else
-			as_fn_error $? "could not locate usable POSIX Threads" "$LINENO" 5
-		fi
-	fi
-
-	if test $ol_with_threads = posix ; then
-		as_fn_error $? "could not locate POSIX Threads" "$LINENO" 5
-	fi
-	;;
-esac
-
-case $ol_with_threads in auto | yes | mach)
-
-		for ac_header in mach/cthreads.h cthreads.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-	if test $ac_cv_header_mach_cthreads_h = yes ; then
-		ol_with_threads=found
-
-				ac_fn_c_check_func "$LINENO" "cthread_fork" "ac_cv_func_cthread_fork"
-if test "x$ac_cv_func_cthread_fork" = xyes; then :
-  ol_link_threads=yes
-fi
-
-
-		if test $ol_link_threads = no ; then
-									{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for cthread_fork with -all_load" >&5
-$as_echo_n "checking for cthread_fork with -all_load... " >&6; }
-if ${ol_cv_cthread_all_load+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-								save_LIBS="$LIBS"
-				LIBS="-all_load $LIBS"
-				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <mach/cthreads.h>
 int
 main ()
 {
-
-					cthread_fork((void *)0, (void *)0);
-
+int attr=$attr; return attr;
   ;
   return 0;
 }
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_cthread_all_load=yes
-else
-  ol_cv_cthread_all_load=no
+  attr_name=$attr; break
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-								LIBS="$save_LIBS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_cthread_all_load" >&5
-$as_echo "$ol_cv_cthread_all_load" >&6; }
-
-			if test $ol_cv_cthread_all_load = yes ; then
-				LTHREAD_LIBS="$LTHREAD_LIBS -all_load"
-				ol_link_threads=mach
-				ol_with_threads=found
-			fi
-		fi
-
-	elif test $ac_cv_header_cthreads_h = yes ; then
-
-		ol_with_threads=found
-
-				save_LIBS="$LIBS"
-		LIBS="$LIBS -lthreads"
-		ac_fn_c_check_func "$LINENO" "cthread_fork" "ac_cv_func_cthread_fork"
-if test "x$ac_cv_func_cthread_fork" = xyes; then :
-  ol_link_threads=yes
-fi
-
-		LIBS="$save_LIBS"
-
-		if test $ol_link_threads = yes ; then
-			LTHREAD_LIBS="-lthreads"
-			ol_link_threads=mach
-			ol_with_threads=found
-		else
-			as_fn_error $? "could not link with Mach CThreads" "$LINENO" 5
-		fi
-
-	elif test $ol_with_threads = mach ; then
-		as_fn_error $? "could not locate Mach CThreads" "$LINENO" 5
-	fi
-
-	if test $ol_link_threads = mach ; then
-
-$as_echo "#define HAVE_MACH_CTHREADS 1" >>confdefs.h
-
-	elif test $ol_with_threads = found ; then
-		as_fn_error $? "could not link with Mach CThreads" "$LINENO" 5
-	fi
-	;;
-esac
-
-case $ol_with_threads in auto | yes | pth)
-
-	for ac_header in pth.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "pth.h" "ac_cv_header_pth_h" "$ac_includes_default"
-if test "x$ac_cv_header_pth_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_PTH_H 1
-_ACEOF
-
-fi
-
-done
-
-
-	if test $ac_cv_header_pth_h = yes ; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for pth_version in -lpth" >&5
-$as_echo_n "checking for pth_version in -lpth... " >&6; }
-if ${ac_cv_lib_pth_pth_version+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lpth  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
+	done
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $attr_name" >&5
+$as_echo "$attr_name" >&6; }
+        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
 
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char pth_version ();
-int
-main ()
-{
-return pth_version ();
-  ;
-  return 0;
-}
+cat >>confdefs.h <<_ACEOF
+#define PTHREAD_CREATE_JOINABLE $attr_name
 _ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_pth_pth_version=yes
-else
-  ac_cv_lib_pth_pth_version=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pth_pth_version" >&5
-$as_echo "$ac_cv_lib_pth_pth_version" >&6; }
-if test "x$ac_cv_lib_pth_pth_version" = xyes; then :
-  have_pth=yes
-else
-  have_pth=no
-fi
-
-
-		if test $have_pth = yes ; then
 
-$as_echo "#define HAVE_GNU_PTH 1" >>confdefs.h
-
-			LTHREAD_LIBS="$LTHREAD_LIBS -lpth"
-			ol_link_threads=pth
-			ol_with_threads=found
-
-			if test x$ol_with_yielding_select = xauto ; then
-				ol_with_yielding_select=yes
-			fi
-		fi
-	fi
-	;;
-esac
-
-case $ol_with_threads in auto | yes | lwp)
-
-		for ac_header in thread.h synch.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
+        fi
 
-fi
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking if more special flags are required for pthreads" >&5
+$as_echo_n "checking if more special flags are required for pthreads... " >&6; }
+        flag=no
+        case "${host_cpu}-${host_os}" in
+            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+        esac
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${flag}" >&5
+$as_echo "${flag}" >&6; }
+        if test "x$flag" != xno; then
+            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+        fi
 
-done
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
 
-	if test $ac_cv_header_thread_h = yes &&
-	   test $ac_cv_header_synch_h = yes ; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for thr_create in -lthread" >&5
-$as_echo_n "checking for thr_create in -lthread... " >&6; }
-if ${ac_cv_lib_thread_thr_create+:} false; then :
+        # More AIX lossage: must compile with xlc_r or cc_r
+	if test x"$GCC" != xyes; then
+          for ac_prog in xlc_r cc_r
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_PTHREAD_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lthread  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char thr_create ();
-int
-main ()
-{
-return thr_create ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_thread_thr_create=yes
-else
-  ac_cv_lib_thread_thr_create=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_thread_thr_create" >&5
-$as_echo "$ac_cv_lib_thread_thr_create" >&6; }
-if test "x$ac_cv_lib_thread_thr_create" = xyes; then :
-  have_thr=yes
+  if test -n "$PTHREAD_CC"; then
+  ac_cv_prog_PTHREAD_CC="$PTHREAD_CC" # Let the user override the test.
 else
-  have_thr=no
-fi
-
-
-		if test $have_thr = yes ; then
-
-$as_echo "#define HAVE_THR 1" >>confdefs.h
-
-			LTHREAD_LIBS="$LTHREAD_LIBS -lthread"
-			ol_link_threads=thr
-
-			if test x$ol_with_yielding_select = xauto ; then
-				ol_with_yielding_select=yes
-			fi
-
-						for ac_func in \
-				thr_setconcurrency \
-				thr_getconcurrency \
-
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-		fi
-	fi
-
-		for ac_header in lwp/lwp.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "lwp/lwp.h" "ac_cv_header_lwp_lwp_h" "$ac_includes_default"
-if test "x$ac_cv_header_lwp_lwp_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LWP_LWP_H 1
-_ACEOF
-
-fi
-
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_PTHREAD_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
 done
+  done
+IFS=$as_save_IFS
 
-	if test $ac_cv_header_lwp_lwp_h = yes ; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lwp_create in -llwp" >&5
-$as_echo_n "checking for lwp_create in -llwp... " >&6; }
-if ${ac_cv_lib_lwp_lwp_create+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-llwp  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char lwp_create ();
-int
-main ()
-{
-return lwp_create ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_lwp_lwp_create=yes
-else
-  ac_cv_lib_lwp_lwp_create=no
 fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lwp_lwp_create" >&5
-$as_echo "$ac_cv_lib_lwp_lwp_create" >&6; }
-if test "x$ac_cv_lib_lwp_lwp_create" = xyes; then :
-  have_lwp=yes
+PTHREAD_CC=$ac_cv_prog_PTHREAD_CC
+if test -n "$PTHREAD_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PTHREAD_CC" >&5
+$as_echo "$PTHREAD_CC" >&6; }
 else
-  have_lwp=no
-fi
-
-
-		if test $have_lwp = yes ; then
-
-$as_echo "#define HAVE_LWP 1" >>confdefs.h
-
-			LTHREAD_LIBS="$LTHREAD_LIBS -llwp"
-			ol_link_threads=lwp
-
-			if test x$ol_with_yielding_select = xauto ; then
-				ol_with_yielding_select=no
-			fi
-		fi
-	fi
-	;;
-esac
-
-if test $ol_with_yielding_select = yes ; then
-
-$as_echo "#define HAVE_YIELDING_SELECT 1" >>confdefs.h
-
-fi
-
-if test $ol_with_threads = manual ; then
-		ol_link_threads=yes
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: thread defines and link options must be set manually" >&5
-$as_echo "$as_me: WARNING: thread defines and link options must be set manually" >&2;}
-
-	for ac_header in pthread.h sched.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
 fi
 
-done
-
-	for ac_func in sched_yield pthread_yield
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
-fi
+  test -n "$PTHREAD_CC" && break
 done
+test -n "$PTHREAD_CC" || PTHREAD_CC="${CC}"
 
-
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for LinuxThreads pthread.h" >&5
-$as_echo_n "checking for LinuxThreads pthread.h... " >&6; }
-if ${ol_cv_header_linux_threads+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <pthread.h>
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "pthread_kill_other_threads_np" >/dev/null 2>&1; then :
-  ol_cv_header_linux_threads=yes
-else
-  ol_cv_header_linux_threads=no
-fi
-rm -f conftest*
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_header_linux_threads" >&5
-$as_echo "$ol_cv_header_linux_threads" >&6; }
-	if test $ol_cv_header_linux_threads = yes; then
-
-$as_echo "#define HAVE_LINUX_THREADS 1" >>confdefs.h
-
+        else
+          PTHREAD_CC=$CC
 	fi
-
-
-	for ac_header in mach/cthreads.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "mach/cthreads.h" "ac_cv_header_mach_cthreads_h" "$ac_includes_default"
-if test "x$ac_cv_header_mach_cthreads_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_MACH_CTHREADS_H 1
-_ACEOF
-
-fi
-
-done
-
-	for ac_header in lwp/lwp.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "lwp/lwp.h" "ac_cv_header_lwp_lwp_h" "$ac_includes_default"
-if test "x$ac_cv_header_lwp_lwp_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LWP_LWP_H 1
-_ACEOF
-
-fi
-
-done
-
-	for ac_header in thread.h synch.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-fi
-
-if test $ol_link_threads != no && test $ol_link_threads != nt ; then
-
-$as_echo "#define REENTRANT 1" >>confdefs.h
-
-
-$as_echo "#define _REENTRANT 1" >>confdefs.h
-
-
-$as_echo "#define THREAD_SAFE 1" >>confdefs.h
-
-
-$as_echo "#define _THREAD_SAFE 1" >>confdefs.h
-
-
-$as_echo "#define THREADSAFE 1" >>confdefs.h
-
-
-$as_echo "#define _THREADSAFE 1" >>confdefs.h
-
-
-$as_echo "#define _SGI_MP_SOURCE 1" >>confdefs.h
-
-
-			{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for thread specific errno" >&5
-$as_echo_n "checking for thread specific errno... " >&6; }
-if ${ol_cv_errno_thread_specific+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <errno.h>
-int
-main ()
-{
-errno = 0;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_errno_thread_specific=yes
 else
-  ol_cv_errno_thread_specific=no
+        PTHREAD_CC="$CC"
 fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
 
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_errno_thread_specific" >&5
-$as_echo "$ol_cv_errno_thread_specific" >&6; }
-
-			{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for thread specific h_errno" >&5
-$as_echo_n "checking for thread specific h_errno... " >&6; }
-if ${ol_cv_h_errno_thread_specific+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <netdb.h>
-int
-main ()
-{
-h_errno = 0;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ol_cv_h_errno_thread_specific=yes
-else
-  ol_cv_h_errno_thread_specific=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ol_cv_h_errno_thread_specific" >&5
-$as_echo "$ol_cv_h_errno_thread_specific" >&6; }
 
-	if test $ol_cv_errno_thread_specific != yes ||
-	   test $ol_cv_h_errno_thread_specific != yes ; then
-		LIBS="$LTHREAD_LIBS $LIBS"
-		LTHREAD_LIBS=""
-	fi
 
-fi
 
-if test $ol_link_threads = no ; then
-	if test $ol_with_threads = yes ; then
-		as_fn_error $? "no suitable thread support" "$LINENO" 5
-	fi
 
-	if test $ol_with_threads = auto ; then
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: no suitable thread support, disabling threads" >&5
-$as_echo "$as_me: WARNING: no suitable thread support, disabling threads" >&2;}
-		ol_with_threads=no
-	fi
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
 
 
-$as_echo "#define NO_THREADS 1" >>confdefs.h
+$as_echo "#define HAVE_PTHREADS 1" >>confdefs.h
 
-	LTHREAD_LIBS=""
-	BUILD_THREAD=no
+	have_pthreads=yes
+        :
 else
-	BUILD_THREAD=yes
-fi
-
-if test $ol_link_threads != no ; then
-
-$as_echo "#define LDAP_API_FEATURE_X_OPENLDAP_THREAD_SAFE 1" >>confdefs.h
+        acx_pthread_ok=no
 
 fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-case "$ol_with_threads" in
- no)
-    ol_pthread_ok=no
-
-    ;;
- *)
 
-	have_pthreads=yes
-	PTHREAD_LIBS="$LTHREAD_LIBS"
-	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-	# The cast to long int works around a bug in the HP C Compiler
+  CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+  # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
 # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
 # This bug is HP SR number 8606223364.
@@ -19273,10 +15191,8 @@ $as_echo_n "checking size of pthread_t... " >&6; }
 if ${ac_cv_sizeof_pthread_t+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (pthread_t))" "ac_cv_sizeof_pthread_t"        "
-		$ac_includes_default
-		#include <pthread.h>
-
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (pthread_t))" "ac_cv_sizeof_pthread_t"        "$ac_includes_default
+      #include <pthread.h>
 
 "; then :
 
@@ -19302,20 +15218,7 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
-
-    ;;
-esac
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
 fi
-
-
  if test "$have_pthreads" != "no" && test "$enable_thread_support" != "no"; then
   PTHREADS_TRUE=
   PTHREADS_FALSE='#'
@@ -19712,6 +15615,10 @@ if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
   as_fn_error $? "conditional \"am__fastdepCC\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${BUILD_SAMPLES_TRUE}" && test -z "${BUILD_SAMPLES_FALSE}"; then
+  as_fn_error $? "conditional \"BUILD_SAMPLES\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${BUILD_REGRESS_TRUE}" && test -z "${BUILD_REGRESS_FALSE}"; then
   as_fn_error $? "conditional \"BUILD_REGRESS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -20189,7 +16096,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libevent $as_me 2.1.3-alpha-dev, which was
+This file was extended by libevent $as_me 2.1.5-beta, which was
 generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -20255,7 +16162,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libevent config.status 2.1.3-alpha-dev
+libevent config.status 2.1.5-beta
 configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
diff --git a/contrib/ntp/sntp/libevent/configure.ac b/contrib/ntp/sntp/libevent/configure.ac
index c60c7ac..2cdc74f 100644
--- a/contrib/ntp/sntp/libevent/configure.ac
+++ b/contrib/ntp/sntp/libevent/configure.ac
@@ -5,18 +5,17 @@ dnl See LICENSE for copying information.
 dnl
 dnl Original version Dug Song <dugsong@monkey.org>
 
-AC_INIT(libevent,2.1.3-alpha-dev)
+AC_INIT(libevent,2.1.5-beta)
 AC_PREREQ(2.59)
 AC_CONFIG_SRCDIR(event.c)
 
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([build-aux])
-
 AM_INIT_AUTOMAKE
 dnl AM_SILENT_RULES req. automake 1.11.  [no] defaults V=1
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 AC_CONFIG_HEADERS(config.h  evconfig-private.h:evconfig-private.h.in)
-AC_DEFINE(NUMERIC_VERSION, 0x02010301, [Numeric representation of the version])
+AC_DEFINE(NUMERIC_VERSION, 0x02010500, [Numeric representation of the version])
 
 dnl Initialize prefix.
 if test "$prefix" = "NONE"; then
@@ -113,6 +112,9 @@ AC_ARG_ENABLE([libevent-install],
 AC_ARG_ENABLE([libevent-regress],
      AS_HELP_STRING([--disable-libevent-regress, skip regress in make check]),
 	[], [enable_libevent_regress=yes])
+AC_ARG_ENABLE([samples],
+     AS_HELP_STRING([--disable-samples, skip building of sample programs]),
+	[], [enable_samples=yes])
 AC_ARG_ENABLE([function-sections],
      AS_HELP_STRING([--enable-function-sections, make static library allow smaller binaries with --gc-sections]),
 	[], [enable_function_sections=no])
@@ -129,6 +131,7 @@ dnl   the command line with --enable-shared and --disable-shared.
 dnl AC_DISABLE_SHARED
 AC_SUBST(LIBTOOL_DEPS)
 
+AM_CONDITIONAL([BUILD_SAMPLES], [test "$enable_samples" = "yes"])
 AM_CONDITIONAL([BUILD_REGRESS], [test "$enable_libevent_regress" = "yes"])
 
 dnl Checks for libraries.
@@ -724,22 +727,16 @@ AC_TRY_COMPILE([],
 # check if we can compile with pthreads
 have_pthreads=no
 if test x$bwin32 != xtrue && test "$enable_thread_support" != "no"; then
-    OL_THREAD_CHECK([
-	have_pthreads=yes
-	PTHREAD_LIBS="$LTHREAD_LIBS"
-	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-	AC_CHECK_SIZEOF(
-	    [pthread_t],
-	    [],
-	    [
-		AC_INCLUDES_DEFAULT()
-		#include <pthread.h>
-	    ]
-	)
-    ])
+  ACX_PTHREAD([
+	AC_DEFINE(HAVE_PTHREADS, 1,
+		[Define if we have pthreads on this system])
+	have_pthreads=yes])
+  CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+  AC_CHECK_SIZEOF(pthread_t, ,
+     [AC_INCLUDES_DEFAULT()
+      #include <pthread.h> ]
+  )
 fi
-AC_SUBST([PTHREAD_LIBS])
-AC_SUBST([PTHREAD_CFLAGS])
 AM_CONDITIONAL([PTHREADS], [test "$have_pthreads" != "no" && test "$enable_thread_support" != "no"])
 
 # check if we should compile locking into the library
diff --git a/contrib/ntp/sntp/libevent/evbuffer-internal.h b/contrib/ntp/sntp/libevent/evbuffer-internal.h
index fb67ec0..cf4bddc 100644
--- a/contrib/ntp/sntp/libevent/evbuffer-internal.h
+++ b/contrib/ntp/sntp/libevent/evbuffer-internal.h
@@ -155,6 +155,18 @@ struct evbuffer {
 	struct bufferevent *parent;
 };
 
+#if EVENT__SIZEOF_OFF_T < EVENT__SIZEOF_SIZE_T
+typedef ev_ssize_t ev_misalign_t;
+#define EVBUFFER_CHAIN_MAX ((size_t)EV_SSIZE_MAX)
+#else
+typedef ev_off_t ev_misalign_t;
+#if EVENT__SIZEOF_OFF_T > EVENT__SIZEOF_SIZE_T
+#define EVBUFFER_CHAIN_MAX EV_SIZE_MAX
+#else
+#define EVBUFFER_CHAIN_MAX ((size_t)EV_SSIZE_MAX)
+#endif
+#endif
+
 /** A single item in an evbuffer. */
 struct evbuffer_chain {
 	/** points to next buffer in the chain */
@@ -165,7 +177,7 @@ struct evbuffer_chain {
 
 	/** unused space at the beginning of buffer or an offset into a
 	 * file for sendfile buffers. */
-	ev_off_t misalign;
+	ev_misalign_t misalign;
 
 	/** Offset into buffer + misalign at which to start writing.
 	 * In other words, the total number of bytes actually stored
diff --git a/contrib/ntp/sntp/libevent/evdns.c b/contrib/ntp/sntp/libevent/evdns.c
index 59c3abe..60f4db5 100644
--- a/contrib/ntp/sntp/libevent/evdns.c
+++ b/contrib/ntp/sntp/libevent/evdns.c
@@ -541,6 +541,17 @@ nameserver_probe_failed(struct nameserver *const ns) {
 	}
 }
 
+static void
+request_swap_ns(struct request *req, struct nameserver *ns) {
+	if (ns && req->ns != ns) {
+		EVUTIL_ASSERT(req->ns->requests_inflight > 0);
+		req->ns->requests_inflight--;
+		ns->requests_inflight++;
+
+		req->ns = ns;
+	}
+}
+
 /* called when a nameserver has been deemed to have failed. For example, too */
 /* many packets have timed out etc */
 static void
@@ -595,7 +606,7 @@ nameserver_failed(struct nameserver *const ns, const char *msg) {
 				if (req->tx_count == 0 && req->ns == ns) {
 					/* still waiting to go out, can be moved */
 					/* to another server */
-					req->ns = nameserver_pick(base);
+					request_swap_ns(req, nameserver_pick(base));
 				}
 				req = req->next;
 			} while (req != started_at);
@@ -659,6 +670,7 @@ request_finished(struct request *const req, struct request **head, int free_hand
 	    req->ns->requests_inflight == 0 &&
 	    req->base->disable_when_inactive) {
 		event_del(&req->ns->event);
+		evtimer_del(&req->ns->timeout_event);
 	}
 
 	if (!req->request_appended) {
@@ -707,7 +719,7 @@ request_reissue(struct request *req) {
 	/* the last nameserver should have been marked as failing */
 	/* by the caller of this function, therefore pick will try */
 	/* not to return it */
-	req->ns = nameserver_pick(req->base);
+	request_swap_ns(req, nameserver_pick(req->base));
 	if (req->ns == last_ns) {
 		/* ... but pick did return it */
 		/* not a lot of point in trying again with the */
@@ -2158,29 +2170,30 @@ evdns_request_timeout_callback(evutil_socket_t fd, short events, void *arg) {
 	log(EVDNS_LOG_DEBUG, "Request %p timed out", arg);
 	EVDNS_LOCK(base);
 
-	req->ns->timedout++;
-	if (req->ns->timedout > req->base->global_max_nameserver_timeout) {
-		req->ns->timedout = 0;
-		nameserver_failed(req->ns, "request timed out.");
-	}
-
 	if (req->tx_count >= req->base->global_max_retransmits) {
+		struct nameserver *ns = req->ns;
 		/* this request has failed */
 		log(EVDNS_LOG_DEBUG, "Giving up on request %p; tx_count==%d",
 		    arg, req->tx_count);
 		reply_schedule_callback(req, 0, DNS_ERR_TIMEOUT, NULL);
+
 		request_finished(req, &REQ_HEAD(req->base, req->trans_id), 1);
+		nameserver_failed(ns, "request timed out.");
 	} else {
 		/* retransmit it */
-		struct nameserver *new_ns;
 		log(EVDNS_LOG_DEBUG, "Retransmitting request %p; tx_count==%d",
 		    arg, req->tx_count);
 		(void) evtimer_del(&req->timeout_event);
-		new_ns = nameserver_pick(base);
-		if (new_ns)
-			req->ns = new_ns;
+		request_swap_ns(req, nameserver_pick(base));
 		evdns_request_transmit(req);
+
+		req->ns->timedout++;
+		if (req->ns->timedout > req->base->global_max_nameserver_timeout) {
+			req->ns->timedout = 0;
+			nameserver_failed(req->ns, "request timed out.");
+		}
 	}
+
 	EVDNS_UNLOCK(base);
 }
 
@@ -2639,6 +2652,34 @@ evdns_base_nameserver_sockaddr_add(struct evdns_base *base,
 	return res;
 }
 
+int
+evdns_base_get_nameserver_addr(struct evdns_base *base, int idx,
+    struct sockaddr *sa, ev_socklen_t len)
+{
+	int result = -1;
+	int i;
+	struct nameserver *server;
+	EVDNS_LOCK(base);
+	server = base->server_head;
+	for (i = 0; i < idx && server; ++i, server = server->next) {
+		if (server->next == base->server_head)
+			goto done;
+	}
+	if (! server)
+		goto done;
+
+	if (server->addrlen > len) {
+		result = (int) server->addrlen;
+		goto done;
+	}
+
+	memcpy(sa, &server->address, server->addrlen);
+	result = (int) server->addrlen;
+done:
+	EVDNS_UNLOCK(base);
+	return result;
+}
+
 /* remove from the queue */
 static void
 evdns_request_remove(struct request *req, struct request **head)
@@ -3311,7 +3352,7 @@ strtoint(const char *const str)
 
 /* Parse a number of seconds into a timeval; return -1 on error. */
 static int
-strtotimeval(const char *const str, struct timeval *out)
+evdns_strtotimeval(const char *const str, struct timeval *out)
 {
 	double d;
 	char *endptr;
@@ -3414,13 +3455,13 @@ evdns_base_set_option_impl(struct evdns_base *base,
 		base->global_search_state->ndots = ndots;
 	} else if (str_matches_option(option, "timeout:")) {
 		struct timeval tv;
-		if (strtotimeval(val, &tv) == -1) return -1;
+		if (evdns_strtotimeval(val, &tv) == -1) return -1;
 		if (!(flags & DNS_OPTION_MISC)) return 0;
 		log(EVDNS_LOG_DEBUG, "Setting timeout to %s", val);
 		memcpy(&base->global_timeout, &tv, sizeof(struct timeval));
 	} else if (str_matches_option(option, "getaddrinfo-allow-skew:")) {
 		struct timeval tv;
-		if (strtotimeval(val, &tv) == -1) return -1;
+		if (evdns_strtotimeval(val, &tv) == -1) return -1;
 		if (!(flags & DNS_OPTION_MISC)) return 0;
 		log(EVDNS_LOG_DEBUG, "Setting getaddrinfo-allow-skew to %s",
 		    val);
@@ -3462,7 +3503,7 @@ evdns_base_set_option_impl(struct evdns_base *base,
 		base->global_outgoing_addrlen = len;
 	} else if (str_matches_option(option, "initial-probe-timeout:")) {
 		struct timeval tv;
-		if (strtotimeval(val, &tv) == -1) return -1;
+		if (evdns_strtotimeval(val, &tv) == -1) return -1;
 		if (tv.tv_sec > 3600)
 			tv.tv_sec = 3600;
 		if (!(flags & DNS_OPTION_MISC)) return 0;
@@ -3555,8 +3596,8 @@ evdns_get_default_hosts_filename(void)
 
 	if (! SHGetSpecialFolderPathA(NULL, path, CSIDL_SYSTEM, 0))
 		return NULL;
-	len_out = strlen(path)+strlen(hostfile);
-	path_out = mm_malloc(len_out+1);
+	len_out = strlen(path)+strlen(hostfile)+1;
+	path_out = mm_malloc(len_out);
 	evutil_snprintf(path_out, len_out, "%s%s", path, hostfile);
 	return path_out;
 #else
@@ -3826,17 +3867,18 @@ evdns_base_config_windows_nameservers(struct evdns_base *base)
 	if (base == NULL)
 		return -1;
 	EVDNS_LOCK(base);
+	fname = evdns_get_default_hosts_filename();
+	log(EVDNS_LOG_DEBUG, "Loading hosts entries from %s", fname);
+	evdns_base_load_hosts(base, fname);
+	if (fname)
+		mm_free(fname);
+
 	if (load_nameservers_with_getnetworkparams(base) == 0) {
 		EVDNS_UNLOCK(base);
 		return 0;
 	}
 	r = load_nameservers_from_registry(base);
 
-	fname = evdns_get_default_hosts_filename();
-	evdns_base_load_hosts(base, fname);
-	if (fname)
-		mm_free(fname);
-
 	EVDNS_UNLOCK(base);
 	return r;
 }
@@ -3973,6 +4015,10 @@ evdns_nameserver_free(struct nameserver *server)
 	event_debug_unassign(&server->event);
 	if (server->state == 0)
 		(void) event_del(&server->timeout_event);
+	if (server->probe_request) {
+		evdns_cancel_request(server->base, server->probe_request);
+		server->probe_request = NULL;
+	}
 	event_debug_unassign(&server->timeout_event);
 	mm_free(server);
 }
@@ -3988,6 +4034,15 @@ evdns_base_free_and_unlock(struct evdns_base *base, int fail_requests)
 
 	/* TODO(nickm) we might need to refcount here. */
 
+	for (server = base->server_head; server; server = server_next) {
+		server_next = server->next;
+		evdns_nameserver_free(server);
+		if (server_next == base->server_head)
+			break;
+	}
+	base->server_head = NULL;
+	base->global_good_nameservers = 0;
+
 	for (i = 0; i < base->n_req_heads; ++i) {
 		while (base->req_heads[i]) {
 			if (fail_requests)
@@ -4002,14 +4057,6 @@ evdns_base_free_and_unlock(struct evdns_base *base, int fail_requests)
 	}
 	base->global_requests_inflight = base->global_requests_waiting = 0;
 
-	for (server = base->server_head; server; server = server_next) {
-		server_next = server->next;
-		evdns_nameserver_free(server);
-		if (server_next == base->server_head)
-			break;
-	}
-	base->server_head = NULL;
-	base->global_good_nameservers = 0;
 
 	if (base->global_search_state) {
 		for (dom = base->global_search_state->head; dom; dom = dom_next) {
@@ -4663,7 +4710,7 @@ evdns_getaddrinfo(struct evdns_base *dns_base,
 		data->ipv4_request.r = evdns_base_resolve_ipv4(dns_base,
 		    nodename, 0, evdns_getaddrinfo_gotresolve,
 		    &data->ipv4_request);
-		if (want_cname)
+		if (want_cname && data->ipv4_request.r)
 			data->ipv4_request.r->current_req->put_cname_in_ptr =
 			    &data->cname_result;
 	}
@@ -4674,7 +4721,7 @@ evdns_getaddrinfo(struct evdns_base *dns_base,
 		data->ipv6_request.r = evdns_base_resolve_ipv6(dns_base,
 		    nodename, 0, evdns_getaddrinfo_gotresolve,
 		    &data->ipv6_request);
-		if (want_cname)
+		if (want_cname && data->ipv6_request.r)
 			data->ipv6_request.r->current_req->put_cname_in_ptr =
 			    &data->cname_result;
 	}
diff --git a/contrib/ntp/sntp/libevent/event.c b/contrib/ntp/sntp/libevent/event.c
index 01f0e14..af4a6e0 100644
--- a/contrib/ntp/sntp/libevent/event.c
+++ b/contrib/ntp/sntp/libevent/event.c
@@ -526,22 +526,24 @@ event_enable_debug_mode(void)
 #endif
 }
 
-#if 0
 void
 event_disable_debug_mode(void)
 {
+#ifndef EVENT__DISABLE_DEBUG_MODE
 	struct event_debug_entry **ent, *victim;
 
 	EVLOCK_LOCK(event_debug_map_lock_, 0);
 	for (ent = HT_START(event_debug_map, &global_debug_map); ent; ) {
 		victim = *ent;
-		ent = HT_NEXT_RMV(event_debug_map,&global_debug_map, ent);
+		ent = HT_NEXT_RMV(event_debug_map, &global_debug_map, ent);
 		mm_free(victim);
 	}
 	HT_CLEAR(event_debug_map, &global_debug_map);
 	EVLOCK_UNLOCK(event_debug_map_lock_ , 0);
-}
+
+	event_debug_mode_on_  = 0;
 #endif
+}
 
 struct event_base *
 event_base_new_with_config(const struct event_config *cfg)
@@ -993,6 +995,21 @@ done:
 	return (res);
 }
 
+/* Get the monotonic time for this event_base' timer */
+int
+event_gettime_monotonic(struct event_base *base, struct timeval *tv)
+{
+  int rv = -1;
+
+  if (base && tv) {
+    EVBASE_ACQUIRE_LOCK(base, th_base_lock);
+    rv = evutil_gettime_monotonic_(&(base->monotonic_timer), tv);
+    EVBASE_RELEASE_LOCK(base, th_base_lock);
+  }
+
+  return rv;
+}
+
 const char **
 event_get_supported_methods(void)
 {
@@ -1454,10 +1471,13 @@ done:
 static inline void
 event_persist_closure(struct event_base *base, struct event *ev)
 {
-
-	// Define our callback, we use this to store our callback before it's executed
 	void (*evcb_callback)(evutil_socket_t, short, void *);
 
+        // Other fields of *ev that must be stored before executing
+        evutil_socket_t evcb_fd;
+        short evcb_res;
+        void *evcb_arg;
+
 	/* reschedule the persistent event if we have a timeout. */
 	if (ev->ev_io_timeout.tv_sec || ev->ev_io_timeout.tv_usec) {
 		/* If there was a timeout, we want it to run at an interval of
@@ -1501,13 +1521,16 @@ event_persist_closure(struct event_base *base, struct event *ev)
 	}
 
 	// Save our callback before we release the lock
-	evcb_callback = *ev->ev_callback;
+	evcb_callback = ev->ev_callback;
+        evcb_fd = ev->ev_fd;
+        evcb_res = ev->ev_res;
+        evcb_arg = ev->ev_arg;
 
 	// Release the lock
  	EVBASE_RELEASE_LOCK(base, th_base_lock);
 
 	// Execute the callback
-	(evcb_callback)(ev->ev_fd, ev->ev_res, ev->ev_arg);
+        (evcb_callback)(evcb_fd, evcb_res, evcb_arg);
 }
 
 /*
@@ -1569,8 +1592,9 @@ event_process_active_single_queue(struct event_base *base,
 			event_persist_closure(base, ev);
 			break;
 		case EV_CLOSURE_EVENT: {
+			void (*evcb_callback)(evutil_socket_t, short, void *);
 			EVUTIL_ASSERT(ev != NULL);
-			void (*evcb_callback)(evutil_socket_t, short, void *) = *ev->ev_callback;
+			evcb_callback = *ev->ev_callback;
 			EVBASE_RELEASE_LOCK(base, th_base_lock);
 			evcb_callback(ev->ev_fd, ev->ev_res, ev->ev_arg);
 		}
@@ -1583,14 +1607,16 @@ event_process_active_single_queue(struct event_base *base,
 		break;
 		case EV_CLOSURE_EVENT_FINALIZE:
 		case EV_CLOSURE_EVENT_FINALIZE_FREE: {
+			void (*evcb_evfinalize)(struct event *, void *);
+			int evcb_closure = evcb->evcb_closure;
 			EVUTIL_ASSERT(ev != NULL);
-			void (*evcb_evfinalize)(struct event *, void *) = ev->ev_evcallback.evcb_cb_union.evcb_evfinalize;
 			base->current_event = NULL;
+			evcb_evfinalize = ev->ev_evcallback.evcb_cb_union.evcb_evfinalize;
 			EVUTIL_ASSERT((evcb->evcb_flags & EVLIST_FINALIZING));
 			EVBASE_RELEASE_LOCK(base, th_base_lock);
 			evcb_evfinalize(ev, ev->ev_arg);
 			event_debug_note_teardown_(ev);
-			if (evcb->evcb_closure == EV_CLOSURE_EVENT_FINALIZE_FREE)
+			if (evcb_closure == EV_CLOSURE_EVENT_FINALIZE_FREE)
 				mm_free(ev);
 		}
 		break;
@@ -3739,6 +3765,7 @@ event_free_debug_globals_locks(void)
 	if (event_debug_map_lock_ != NULL) {
 		EVTHREAD_FREE_LOCK(event_debug_map_lock_, 0);
 		event_debug_map_lock_ = NULL;
+		evthreadimpl_disable_lock_debugging_();
 	}
 #endif /* EVENT__DISABLE_DEBUG_MODE */
 #endif /* EVENT__DISABLE_THREAD_SUPPORT */
@@ -3774,6 +3801,7 @@ event_free_globals(void)
 void
 libevent_global_shutdown(void)
 {
+	event_disable_debug_mode();
 	event_free_globals();
 }
 
diff --git a/contrib/ntp/sntp/libevent/event_tagging.c b/contrib/ntp/sntp/libevent/event_tagging.c
index 7edd3da..64b100b 100644
--- a/contrib/ntp/sntp/libevent/event_tagging.c
+++ b/contrib/ntp/sntp/libevent/event_tagging.c
@@ -207,10 +207,19 @@ decode_tag_internal(ev_uint32_t *ptag, struct evbuffer *evbuf, int dodrain)
 	 */
 	data = evbuffer_pullup(
 		evbuf, len < sizeof(number) + 1 ? len : sizeof(number) + 1);
+	if (!data)
+		return (-1);
 
 	while (count++ < len) {
 		ev_uint8_t lower = *data++;
-		number |= (lower & 0x7f) << shift;
+		if (shift >= 28) {
+			/* Make sure it fits into 32 bits */
+			if (shift > 28)
+				return (-1);
+			if ((lower & 0x7f) > 15)
+				return (-1);
+		}
+		number |= (lower & (unsigned)0x7f) << shift;
 		shift += 7;
 
 		if (!(lower & 0x80)) {
@@ -313,6 +322,8 @@ do {									\
 									\
 	/* XXX(niels): faster? */					\
 	data = evbuffer_pullup(evbuf, offset + 1) + offset;		\
+	if (!data)							\
+		return (-1);						\
 									\
 	nibbles = ((data[0] & 0xf0) >> 4) + 1;				\
 	if (nibbles > maxnibbles || (nibbles >> 1) + 1 > len)		\
@@ -320,6 +331,8 @@ do {									\
 	len = (nibbles >> 1) + 1;					\
 									\
 	data = evbuffer_pullup(evbuf, offset + len) + offset;		\
+	if (!data)							\
+		return (-1);						\
 									\
 	while (nibbles > 0) {						\
 		number <<= 4;						\
diff --git a/contrib/ntp/sntp/libevent/evrpc-internal.h b/contrib/ntp/sntp/libevent/evrpc-internal.h
index e53d06e..9eb3763 100644
--- a/contrib/ntp/sntp/libevent/evrpc-internal.h
+++ b/contrib/ntp/sntp/libevent/evrpc-internal.h
@@ -27,6 +27,7 @@
 #ifndef EVRPC_INTERNAL_H_INCLUDED_
 #define EVRPC_INTERNAL_H_INCLUDED_
 
+#include "event2/http.h"
 #include "http-internal.h"
 
 struct evrpc;
diff --git a/contrib/ntp/sntp/libevent/evthread-internal.h b/contrib/ntp/sntp/libevent/evthread-internal.h
index 346b2bb..efdecf8 100644
--- a/contrib/ntp/sntp/libevent/evthread-internal.h
+++ b/contrib/ntp/sntp/libevent/evthread-internal.h
@@ -376,6 +376,13 @@ int evsig_global_setup_locks_(const int enable_locks);
 int evutil_global_setup_locks_(const int enable_locks);
 int evutil_secure_rng_global_setup_locks_(const int enable_locks);
 
+/** Return current evthread_lock_callbacks */
+struct evthread_lock_callbacks *evthread_get_lock_callbacks(void);
+/** Return current evthread_condition_callbacks */
+struct evthread_condition_callbacks *evthread_get_condition_callbacks(void);
+/** Disable locking for internal usage (like global shutdown) */
+void evthreadimpl_disable_lock_debugging_(void);
+
 #endif
 
 #ifdef __cplusplus
diff --git a/contrib/ntp/sntp/libevent/evthread.c b/contrib/ntp/sntp/libevent/evthread.c
index 4da5d24..02dab7a 100644
--- a/contrib/ntp/sntp/libevent/evthread.c
+++ b/contrib/ntp/sntp/libevent/evthread.c
@@ -69,12 +69,25 @@ evthread_set_id_callback(unsigned long (*id_fn)(void))
 	evthread_id_fn_ = id_fn;
 }
 
+struct evthread_lock_callbacks *evthread_get_lock_callbacks()
+{
+	return evthread_lock_debugging_enabled_
+	    ? &original_lock_fns_ : &evthread_lock_fns_;
+}
+struct evthread_condition_callbacks *evthread_get_condition_callbacks()
+{
+	return evthread_lock_debugging_enabled_
+	    ? &original_cond_fns_ : &evthread_cond_fns_;
+}
+void evthreadimpl_disable_lock_debugging_(void)
+{
+	evthread_lock_debugging_enabled_ = 0;
+}
+
 int
 evthread_set_lock_callbacks(const struct evthread_lock_callbacks *cbs)
 {
-	struct evthread_lock_callbacks *target =
-	    evthread_lock_debugging_enabled_
-	    ? &original_lock_fns_ : &evthread_lock_fns_;
+	struct evthread_lock_callbacks *target = evthread_get_lock_callbacks();
 
 	if (!cbs) {
 		if (target->alloc)
@@ -109,9 +122,7 @@ evthread_set_lock_callbacks(const struct evthread_lock_callbacks *cbs)
 int
 evthread_set_condition_callbacks(const struct evthread_condition_callbacks *cbs)
 {
-	struct evthread_condition_callbacks *target =
-	    evthread_lock_debugging_enabled_
-	    ? &original_cond_fns_ : &evthread_cond_fns_;
+	struct evthread_condition_callbacks *target = evthread_get_condition_callbacks();
 
 	if (!cbs) {
 		if (target->alloc_condition)
diff --git a/contrib/ntp/sntp/libevent/evutil.c b/contrib/ntp/sntp/libevent/evutil.c
index c28cade..3d72e40 100644
--- a/contrib/ntp/sntp/libevent/evutil.c
+++ b/contrib/ntp/sntp/libevent/evutil.c
@@ -368,6 +368,20 @@ evutil_make_listen_socket_reuseable(evutil_socket_t sock)
 }
 
 int
+evutil_make_listen_socket_reuseable_port(evutil_socket_t sock)
+{
+#if defined __linux__ && defined(SO_REUSEPORT)
+	int one = 1;
+	/* REUSEPORT on Linux 3.9+ means, "Multiple servers (processes or
+	 * threads) can bind to the same port if they each set the option. */
+	return setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (void*) &one,
+	    (ev_socklen_t)sizeof(one));
+#else
+	return 0;
+#endif
+}
+
+int
 evutil_make_tcp_listen_socket_deferred(evutil_socket_t sock)
 {
 #if defined(EVENT__HAVE_NETINET_TCP_H) && defined(TCP_DEFER_ACCEPT)
@@ -652,7 +666,7 @@ evutil_check_ifaddrs(void)
 	   "GetAdaptersInfo", but that's deprecated; let's just try
 	   GetAdaptersAddresses and fall back to connect+getsockname.
 	*/
-	HANDLE lib = evutil_load_windows_system_library_(TEXT("ihplapi.dll"));
+	HMODULE lib = evutil_load_windows_system_library_(TEXT("ihplapi.dll"));
 	GetAdaptersAddresses_fn_t fn;
 	ULONG size, res;
 	IP_ADAPTER_ADDRESSES *addresses = NULL, *address;
@@ -1918,15 +1932,15 @@ evutil_inet_pton(int af, const char *src, void *dst)
 	return inet_pton(af, src, dst);
 #else
 	if (af == AF_INET) {
-		int a,b,c,d;
+		unsigned a,b,c,d;
 		char more;
 		struct in_addr *addr = dst;
-		if (sscanf(src, "%d.%d.%d.%d%c", &a,&b,&c,&d,&more) != 4)
+		if (sscanf(src, "%u.%u.%u.%u%c", &a,&b,&c,&d,&more) != 4)
 			return 0;
-		if (a < 0 || a > 255) return 0;
-		if (b < 0 || b > 255) return 0;
-		if (c < 0 || c > 255) return 0;
-		if (d < 0 || d > 255) return 0;
+		if (a > 255) return 0;
+		if (b > 255) return 0;
+		if (c > 255) return 0;
+		if (d > 255) return 0;
 		addr->s_addr = htonl((a<<24) | (b<<16) | (c<<8) | d);
 		return 1;
 #ifdef AF_INET6
@@ -1941,7 +1955,7 @@ evutil_inet_pton(int af, const char *src, void *dst)
 		else if (!dot)
 			eow = src+strlen(src);
 		else {
-			int byte1,byte2,byte3,byte4;
+			unsigned byte1,byte2,byte3,byte4;
 			char more;
 			for (eow = dot-1; eow >= src && EVUTIL_ISDIGIT_(*eow); --eow)
 				;
@@ -1949,14 +1963,14 @@ evutil_inet_pton(int af, const char *src, void *dst)
 
 			/* We use "scanf" because some platform inet_aton()s are too lax
 			 * about IPv4 addresses of the form "1.2.3" */
-			if (sscanf(eow, "%d.%d.%d.%d%c",
+			if (sscanf(eow, "%u.%u.%u.%u%c",
 					   &byte1,&byte2,&byte3,&byte4,&more) != 4)
 				return 0;
 
-			if (byte1 > 255 || byte1 < 0 ||
-				byte2 > 255 || byte2 < 0 ||
-				byte3 > 255 || byte3 < 0 ||
-				byte4 > 255 || byte4 < 0)
+			if (byte1 > 255 ||
+			    byte2 > 255 ||
+			    byte3 > 255 ||
+			    byte4 > 255)
 				return 0;
 
 			words[6] = (byte1<<8) | byte2;
@@ -2453,7 +2467,7 @@ evutil_hex_char_to_int_(char c)
 }
 
 #ifdef _WIN32
-HANDLE
+HMODULE
 evutil_load_windows_system_library_(const TCHAR *library_name)
 {
   TCHAR path[MAX_PATH];
diff --git a/contrib/ntp/sntp/libevent/evutil_time.c b/contrib/ntp/sntp/libevent/evutil_time.c
index e433043..8f53c66 100644
--- a/contrib/ntp/sntp/libevent/evutil_time.c
+++ b/contrib/ntp/sntp/libevent/evutil_time.c
@@ -54,6 +54,7 @@
 #include "event2/util.h"
 #include "util-internal.h"
 #include "log-internal.h"
+#include "mm-internal.h"
 
 #ifndef EVENT__HAVE_GETTIMEOFDAY
 /* No gettimeofday; this must be windows. */
@@ -160,6 +161,55 @@ adjust_monotonic_time(struct evutil_monotonic_timer *base,
 	base->last_time = *tv;
 }
 
+/*
+   Allocate a new struct evutil_monotonic_timer
+ */
+struct evutil_monotonic_timer *
+evutil_monotonic_timer_new(void)
+{
+  struct evutil_monotonic_timer *p = NULL;
+
+  p = mm_malloc(sizeof(*p));
+  if (!p) goto done;
+
+  memset(p, 0, sizeof(*p));
+
+ done:
+  return p;
+}
+
+/*
+   Free a struct evutil_monotonic_timer
+ */
+void
+evutil_monotonic_timer_free(struct evutil_monotonic_timer *timer)
+{
+  if (timer) {
+    mm_free(timer);
+  }
+}
+
+/*
+   Set up a struct evutil_monotonic_timer for initial use
+ */
+int
+evutil_configure_monotonic_time(struct evutil_monotonic_timer *timer,
+                                int flags)
+{
+  return evutil_configure_monotonic_time_(timer, flags);
+}
+
+/*
+   Query the current monotonic time
+ */
+int
+evutil_gettime_monotonic(struct evutil_monotonic_timer *timer,
+                         struct timeval *tp)
+{
+  return evutil_gettime_monotonic_(timer, tp);
+}
+
+
 #if defined(HAVE_POSIX_MONOTONIC)
 /* =====
    The POSIX clock_gettime() interface provides a few ways to get at a
diff --git a/contrib/ntp/sntp/libevent/ht-internal.h b/contrib/ntp/sntp/libevent/ht-internal.h
index 8842f4c..50375bb 100644
--- a/contrib/ntp/sntp/libevent/ht-internal.h
+++ b/contrib/ntp/sntp/libevent/ht-internal.h
@@ -380,7 +380,6 @@ ht_string_hash_(const char *s)
   {                                                                     \
     if (head->hth_table)                                                \
       freefn(head->hth_table);                                          \
-    head->hth_table_length = 0;                                         \
     name##_HT_INIT(head);                                               \
   }                                                                     \
   /* Debugging helper: return false iff the representation of 'head' is \
diff --git a/contrib/ntp/sntp/libevent/http-internal.h b/contrib/ntp/sntp/libevent/http-internal.h
index 82dd402..a83160c 100644
--- a/contrib/ntp/sntp/libevent/http-internal.h
+++ b/contrib/ntp/sntp/libevent/http-internal.h
@@ -74,6 +74,7 @@ struct evhttp_connection {
 #define EVHTTP_CON_INCOMING	0x0001	/* only one request on it ever */
 #define EVHTTP_CON_OUTGOING	0x0002  /* multiple requests possible */
 #define EVHTTP_CON_CLOSEDETECT  0x0004  /* detecting if persistent close */
+#define EVHTTP_CON_AUTOFREE 0x0008  /* set when we want to auto free the connection */
 
 	struct timeval timeout;		/* timeout for events */
 	int retry_cnt;			/* retry count */
@@ -99,6 +100,7 @@ struct evhttp_connection {
 
 	struct event_base *base;
 	struct evdns_base *dns_base;
+	int ai_family;
 
 	/* Saved conn_addr, to extract IP address from it.
 	 *
diff --git a/contrib/ntp/sntp/libevent/http.c b/contrib/ntp/sntp/libevent/http.c
index 5147022..dd8c9cf 100644
--- a/contrib/ntp/sntp/libevent/http.c
+++ b/contrib/ntp/sntp/libevent/http.c
@@ -769,6 +769,7 @@ evhttp_connection_done(struct evhttp_connection *evcon)
 {
 	struct evhttp_request *req = TAILQ_FIRST(&evcon->requests);
 	int con_outgoing = evcon->flags & EVHTTP_CON_OUTGOING;
+	int free_evcon = 0;
 
 	if (con_outgoing) {
 		/* idle or close the connection */
@@ -801,6 +802,12 @@ evhttp_connection_done(struct evhttp_connection *evcon)
 			 * need to detect if the other side closes it.
 			 */
 			evhttp_connection_start_detectclose(evcon);
+		} else if ((evcon->flags & EVHTTP_CON_AUTOFREE)) {
+			/*
+			 * If we have no more requests that need completion
+			 * and we're not waiting for the connection to close
+			 */
+			 free_evcon = 1;
 		}
 	} else {
 		/*
@@ -819,6 +826,16 @@ evhttp_connection_done(struct evhttp_connection *evcon)
 	if (con_outgoing && ((req->flags & EVHTTP_USER_OWNED) == 0)) {
 		evhttp_request_free(req);
 	}
+
+	/* If this was the last request of an outgoing connection and we're
+	 * not waiting to receive a connection close event and we want to
+	 * automatically free the connection. We check to ensure our request
+	 * list is empty one last time just in case our callback added a
+	 * new request.
+	 */
+	if (free_evcon && TAILQ_FIRST(&evcon->requests) == NULL) {
+		evhttp_connection_free(evcon);
+	}
 }
 
 /*
@@ -1175,6 +1192,11 @@ evhttp_connection_free(struct evhttp_connection *evcon)
 }
 
 void
+evhttp_connection_free_on_completion(struct evhttp_connection *evcon) {
+	evcon->flags |= EVHTTP_CON_AUTOFREE;
+}
+
+void
 evhttp_connection_set_local_address(struct evhttp_connection *evcon,
     const char *address)
 {
@@ -1243,6 +1265,7 @@ evhttp_connection_reset_(struct evhttp_connection *evcon)
 
 		shutdown(evcon->fd, EVUTIL_SHUT_WR);
 		evutil_closesocket(evcon->fd);
+		bufferevent_setfd(evcon->bufev, -1);
 		evcon->fd = -1;
 	}
 
@@ -1285,6 +1308,7 @@ evhttp_connection_cb_cleanup(struct evhttp_connection *evcon)
 {
 	struct evcon_requestq requests;
 
+	evhttp_connection_reset_(evcon);
 	if (evcon->retry_max < 0 || evcon->retry_cnt < evcon->retry_max) {
 		struct timeval tv_retry = evcon->initial_retry_timeout;
 		int i;
@@ -1306,7 +1330,6 @@ evhttp_connection_cb_cleanup(struct evhttp_connection *evcon)
 		evcon->retry_cnt++;
 		return;
 	}
-	evhttp_connection_reset_(evcon);
 
 	/*
 	 * User callback can do evhttp_make_request() on the same
@@ -1385,6 +1408,17 @@ evhttp_error_cb(struct bufferevent *bufev, short what, void *arg)
 		 */
 		EVUTIL_ASSERT(evcon->state == EVCON_IDLE);
 		evhttp_connection_reset_(evcon);
+
+		/*
+		 * If we have no more requests that need completion
+		 * and we want to auto-free the connection when all
+		 * requests have been completed.
+		 */
+		if (TAILQ_FIRST(&evcon->requests) == NULL
+		  && (evcon->flags & EVHTTP_CON_OUTGOING)
+		  && (evcon->flags & EVHTTP_CON_AUTOFREE)) {
+			evhttp_connection_free(evcon);
+		}
 		return;
 	}
 
@@ -2267,6 +2301,7 @@ evhttp_connection_base_bufferevent_new(struct event_base *base, struct evdns_bas
 	    evhttp_deferred_read_cb, evcon);
 
 	evcon->dns_base = dnsbase;
+	evcon->ai_family = AF_UNSPEC;
 
 	return (evcon);
 
@@ -2294,6 +2329,12 @@ evhttp_connection_base_new(struct event_base *base, struct evdns_base *dnsbase,
 	return evhttp_connection_base_bufferevent_new(base, dnsbase, NULL, address, port);
 }
 
+void evhttp_connection_set_family(struct evhttp_connection *evcon,
+	int family)
+{
+	evcon->ai_family = family;
+}
+
 void
 evhttp_connection_set_base(struct evhttp_connection *evcon,
     struct event_base *base)
@@ -2419,7 +2460,7 @@ evhttp_connection_connect_(struct evhttp_connection *evcon)
 	evcon->state = EVCON_CONNECTING;
 
 	if (bufferevent_socket_connect_hostname(evcon->bufev, evcon->dns_base,
-		AF_UNSPEC, evcon->address, evcon->port) < 0) {
+		evcon->ai_family, evcon->address, evcon->port) < 0) {
 		evcon->state = old_state;
 		event_sock_warn(evcon->fd, "%s: connection to \"%s\" failed",
 		    __func__, evcon->address);
@@ -4289,6 +4330,8 @@ parse_port(const char *s, const char *eos)
 		portnum = (portnum * 10) + (*s - '0');
 		if (portnum < 0)
 			return -1;
+		if (portnum > 65535)
+			return -1;
 		++s;
 	}
 	return portnum;
diff --git a/contrib/ntp/sntp/libevent/include/event2/buffer.h b/contrib/ntp/sntp/libevent/include/event2/buffer.h
index 839d6e7..468588b 100644
--- a/contrib/ntp/sntp/libevent/include/event2/buffer.h
+++ b/contrib/ntp/sntp/libevent/include/event2/buffer.h
@@ -105,13 +105,8 @@ struct evbuffer
 
     Used when repeatedly searching through a buffer.  Calling any function
     that modifies or re-packs the buffer contents may invalidate all
-    evbuffer_ptrs for that buffer.  Do not modify these values except with
-    evbuffer_ptr_set.
-
-    Used when repeatedly searching through a buffer.  Calls to any function
-    that modifies or re-packs the buffer contents may invalidate all
-    evbuffer_ptrs for that buffer.  Do not modify these values except with
-    evbuffer_ptr_set.
+    evbuffer_ptrs for that buffer.  Do not modify or contruct these values
+    except with evbuffer_ptr_set.
 
     An evbuffer_ptr can represent any position from the start of a buffer up
     to a position immediately after the end of a buffer.
@@ -787,7 +782,7 @@ enum evbuffer_ptr_how {
    There are two ways to use this function: you can call
       evbuffer_ptr_set(buf, &pos, N, EVBUFFER_PTR_SET)
    to move 'pos' to a position 'N' bytes after the start of the buffer, or
-      evbuffer_ptr_set(buf, &pos, N, EVBUFFER_PTR_SET)
+      evbuffer_ptr_set(buf, &pos, N, EVBUFFER_PTR_ADD)
    to move 'pos' forward by 'N' bytes.
 
    If evbuffer_ptr is not initialized, this function can only be called
diff --git a/contrib/ntp/sntp/libevent/include/event2/bufferevent.h b/contrib/ntp/sntp/libevent/include/event2/bufferevent.h
index 46203b0..fe8a74d 100644
--- a/contrib/ntp/sntp/libevent/include/event2/bufferevent.h
+++ b/contrib/ntp/sntp/libevent/include/event2/bufferevent.h
@@ -535,8 +535,9 @@ void bufferevent_setwatermark(struct bufferevent *bufev, short events,
     size_t lowmark, size_t highmark);
 
 /**
-  Retrieves the watermarks for read or write events. Result is undefined if
-  events contains both EV_READ and EV_WRITE.
+  Retrieves the watermarks for read or write events.
+  Returns non-zero if events contains not only EV_READ or EV_WRITE.
+  Returns zero if events equal EV_READ or EV_WRITE
 
   @param bufev the bufferevent to be examined
   @param events EV_READ or EV_WRITE
@@ -544,7 +545,7 @@ void bufferevent_setwatermark(struct bufferevent *bufev, short events,
   @param highmark receives the high watermark if not NULL
 */
 EVENT2_EXPORT_SYMBOL
-void bufferevent_getwatermark(struct bufferevent *bufev, short events,
+int bufferevent_getwatermark(struct bufferevent *bufev, short events,
     size_t *lowmark, size_t *highmark);
 
 /**
@@ -598,7 +599,7 @@ enum bufferevent_trigger_options {
 	BEV_TRIG_IGNORE_WATERMARKS = (1<<16),
 
 	/** defer even if the callbacks are not */
-	BEV_TRIG_DEFER_CALLBACKS = BEV_OPT_DEFER_CALLBACKS,
+	BEV_TRIG_DEFER_CALLBACKS = BEV_OPT_DEFER_CALLBACKS
 
 	/* (Note: for internal reasons, these need to be disjoint from
 	 * bufferevent_options, except when they mean the same thing. */
diff --git a/contrib/ntp/sntp/libevent/include/event2/dns.h b/contrib/ntp/sntp/libevent/include/event2/dns.h
index a00c83e..17cd86a 100644
--- a/contrib/ntp/sntp/libevent/include/event2/dns.h
+++ b/contrib/ntp/sntp/libevent/include/event2/dns.h
@@ -453,7 +453,7 @@ int evdns_base_set_option(struct evdns_base *base, const char *option, const cha
 
   @param base the evdns_base to which to apply this operation
   @param flags any of DNS_OPTION_NAMESERVERS|DNS_OPTION_SEARCH|DNS_OPTION_MISC|
-    DNS_OPTIONS_HOSTSFILE|DNS_OPTIONS_ALL
+    DNS_OPTION_HOSTSFILE|DNS_OPTIONS_ALL
   @param filename the path to the resolv.conf file
   @return 0 if successful, or various positive error codes if an error
     occurred (see above)
@@ -694,6 +694,22 @@ struct evdns_getaddrinfo_request *evdns_getaddrinfo(
 EVENT2_EXPORT_SYMBOL
 void evdns_getaddrinfo_cancel(struct evdns_getaddrinfo_request *req);
 
+/**
+   Retrieve the address of the 'idx'th configured nameserver.
+
+   @param base The evdns_base to examine.
+   @param idx The index of the nameserver to get the address of.
+   @param sa A location to receive the server's address.
+   @param len The number of bytes available at sa.
+
+   @return the number of bytes written into sa on success.  On failure, returns
+     -1 if idx is greater than the number of configured nameservers, or a
+     value greater than 'len' if len was not high enough.
+ */
+EVENT2_EXPORT_SYMBOL
+int evdns_base_get_nameserver_addr(struct evdns_base *base, int idx,
+    struct sockaddr *sa, ev_socklen_t len);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/contrib/ntp/sntp/libevent/include/event2/event.h b/contrib/ntp/sntp/libevent/include/event2/event.h
index 6e2b884..570031f 100644
--- a/contrib/ntp/sntp/libevent/include/event2/event.h
+++ b/contrib/ntp/sntp/libevent/include/event2/event.h
@@ -396,6 +396,12 @@ const char *event_base_get_method(const struct event_base *);
 EVENT2_EXPORT_SYMBOL
 const char **event_get_supported_methods(void);
 
+/** Query the current monotonic time from a the timer for a struct
+ * event_base.
+ */
+EVENT2_EXPORT_SYMBOL
+int event_gettime_monotonic(struct event_base *base, struct timeval *tp);
+
 /**
    @name event type flag
 
@@ -771,6 +777,10 @@ void event_set_fatal_callback(event_fatal_cb cb);
 EVENT2_EXPORT_SYMBOL
 void event_enable_debug_logging(ev_uint32_t which);
 
+EVENT2_EXPORT_SYMBOL
+void
+event_disable_debug_mode(void);
+
 /**
   Associate a different event base with an event.
 
diff --git a/contrib/ntp/sntp/libevent/include/event2/http.h b/contrib/ntp/sntp/libevent/include/event2/http.h
index 81f44b8..4284d5f 100644
--- a/contrib/ntp/sntp/libevent/include/event2/http.h
+++ b/contrib/ntp/sntp/libevent/include/event2/http.h
@@ -630,6 +630,12 @@ struct evhttp_connection *evhttp_connection_base_new(
 	struct event_base *base, struct evdns_base *dnsbase,
 	const char *address, unsigned short port);
 
+/**
+ * Set family hint for DNS requests.
+ */
+void evhttp_connection_set_family(struct evhttp_connection *evcon,
+	int family);
+
 /** Takes ownership of the request object
  *
  * Can be used in a request callback to keep onto the request until
@@ -669,6 +675,14 @@ void evhttp_connection_set_max_body_size(struct evhttp_connection* evcon,
 EVENT2_EXPORT_SYMBOL
 void evhttp_connection_free(struct evhttp_connection *evcon);
 
+/** Disowns a given connection object
+ *
+ * Can be used to tell libevent to free the connection object after
+ * the last request has completed or failed.
+ */
+EVENT2_EXPORT_SYMBOL
+void evhttp_connection_free_on_completion(struct evhttp_connection *evcon);
+
 /** sets the ip address from which http connections are made */
 EVENT2_EXPORT_SYMBOL
 void evhttp_connection_set_local_address(struct evhttp_connection *evcon,
diff --git a/contrib/ntp/sntp/libevent/include/event2/listener.h b/contrib/ntp/sntp/libevent/include/event2/listener.h
index 8c77803..84b4da0 100644
--- a/contrib/ntp/sntp/libevent/include/event2/listener.h
+++ b/contrib/ntp/sntp/libevent/include/event2/listener.h
@@ -88,6 +88,15 @@ typedef void (*evconnlistener_errorcb)(struct evconnlistener *, void *);
  * to use the option before it is actually bound.
  */
 #define LEV_OPT_DEFERRED_ACCEPT		(1u<<6)
+/** Flag: Indicates that we ask to allow multiple servers (processes or
+ * threads) to bind to the same port if they each set the option. 
+ * 
+ * SO_REUSEPORT is what most people would expect SO_REUSEADDR to be, however
+ * SO_REUSEPORT does not imply SO_REUSEADDR.
+ *
+ * This is only available on Linux and kernel 3.9+
+ */
+#define LEV_OPT_REUSEABLE_PORT		(1u<<7)
 
 /**
    Allocate a new evconnlistener object to listen for incoming TCP connections
diff --git a/contrib/ntp/sntp/libevent/include/event2/util.h b/contrib/ntp/sntp/libevent/include/event2/util.h
index 14c6a25..b152a4b 100644
--- a/contrib/ntp/sntp/libevent/include/event2/util.h
+++ b/contrib/ntp/sntp/libevent/include/event2/util.h
@@ -292,6 +292,62 @@ extern "C" {
 #define evutil_socket_t int
 #endif
 
+/**
+ * Structure to hold information about a monotonic timer
+ *
+ * Use this with evutil_configure_monotonic_time() and
+ * evutil_gettime_monotonic().
+ *
+ * This is an opaque structure; you can allocate one using
+ * evutil_monotonic_timer_new().
+ *
+ * @see evutil_monotonic_timer_new(), evutil_monotonic_timer_free(),
+ * evutil_configure_monotonic_time(), evutil_gettime_monotonic()
+ */
+struct evutil_monotonic_timer
+#ifdef EVENT_IN_DOXYGEN_
+{/*Empty body so that doxygen will generate documentation here.*/}
+#endif
+;
+
+#define EV_MONOT_PRECISE  1
+#define EV_MONOT_FALLBACK 2
+
+/** Allocate a new struct evutil_monotonic_timer for use with the
+ * evutil_configure_monotonic_time() and evutil_gettime_monotonic()
+ * functions.  You must configure the timer with
+ * evutil_configure_monotonic_time() before using it.
+ */
+EVENT2_EXPORT_SYMBOL
+struct evutil_monotonic_timer * evutil_monotonic_timer_new(void);
+
+/** Free a struct evutil_monotonic_timer that was allocated using
+ * evutil_monotonic_timer_new().
+ */
+EVENT2_EXPORT_SYMBOL
+void evutil_monotonic_timer_free(struct evutil_monotonic_timer *timer);
+
+/** Set up a struct evutil_monotonic_timer; flags can include
+ * EV_MONOT_PRECISE and EV_MONOT_FALLBACK.
+ */
+EVENT2_EXPORT_SYMBOL
+int evutil_configure_monotonic_time(struct evutil_monotonic_timer *timer,
+                                    int flags);
+
+/** Query the current monotonic time from a struct evutil_monotonic_timer
+ * previously configured with evutil_configure_monotonic_time().  Monotonic
+ * time is guaranteed never to run in reverse, but is not necessarily epoch-
+ * based, or relative to any other definite point.  Use it to make reliable
+ * measurements of elapsed time between events even when the system time
+ * may be changed.
+ *
+ * It is not safe to use this funtion on the same timer from multiple
+ * threads.
+ */
+EVENT2_EXPORT_SYMBOL
+int evutil_gettime_monotonic(struct evutil_monotonic_timer *timer,
+                             struct timeval *tp);
+
 /** Create two new sockets that are connected to each other.
 
     On Unix, this simply calls socketpair().  On Windows, it uses the
@@ -327,6 +383,19 @@ int evutil_make_socket_nonblocking(evutil_socket_t sock);
 EVENT2_EXPORT_SYMBOL
 int evutil_make_listen_socket_reuseable(evutil_socket_t sock);
 
+/** Do platform-specific operations to make a listener port reusable.
+
+    Specifically, we want to make sure that multiple programs which also
+    set the same socket option will be able to bind, listen at the same time.
+
+    This is a feature available only to Linux 3.9+
+
+    @param sock The socket to make reusable
+    @return 0 on success, -1 on failure
+ */
+EVENT2_EXPORT_SYMBOL
+int evutil_make_listen_socket_reuseable_port(evutil_socket_t sock);
+
 /** Do platform-specific operations as needed to close a socket upon a
     successful execution of one of the exec*() functions.
 
diff --git a/contrib/ntp/sntp/libevent/kqueue.c b/contrib/ntp/sntp/libevent/kqueue.c
index 3933467..a6578df 100644
--- a/contrib/ntp/sntp/libevent/kqueue.c
+++ b/contrib/ntp/sntp/libevent/kqueue.c
@@ -332,6 +332,23 @@ kq_dispatch(struct event_base *base, struct timeval *tv)
 			 * on FreeBSD. */
 			case EINVAL:
 				continue;
+#if defined(__FreeBSD__) && defined(ENOTCAPABLE)
+			/*
+			 * This currently occurs if an FD is closed
+			 * before the EV_DELETE makes it out via kevent().
+			 * The FreeBSD capabilities code sees the blank
+			 * capability set and rejects the request to
+			 * modify an event.
+			 *
+			 * To be strictly correct - when an FD is closed,
+			 * all the registered events are also removed.
+			 * Queuing EV_DELETE to a closed FD is wrong.
+			 * The event(s) should just be deleted from
+			 * the pending changelist.
+			 */
+			case ENOTCAPABLE:
+				continue;
+#endif
 
 			/* Can occur on a delete if the fd is closed. */
 			case EBADF:
diff --git a/contrib/ntp/sntp/libevent/listener.c b/contrib/ntp/sntp/libevent/listener.c
index 3272c40..172d292 100644
--- a/contrib/ntp/sntp/libevent/listener.c
+++ b/contrib/ntp/sntp/libevent/listener.c
@@ -235,6 +235,11 @@ evconnlistener_new_bind(struct event_base *base, evconnlistener_cb cb,
 			goto err;
 	}
 
+	if (flags & LEV_OPT_REUSEABLE_PORT) {
+		if (evutil_make_listen_socket_reuseable_port(fd) < 0)
+			goto err;
+	}
+
 	if (flags & LEV_OPT_DEFERRED_ACCEPT) {
 		if (evutil_make_tcp_listen_socket_deferred(fd) < 0)
 			goto err;
diff --git a/contrib/ntp/sntp/libevent/m4/acx_pthread.m4 b/contrib/ntp/sntp/libevent/m4/acx_pthread.m4
new file mode 100644
index 0000000..d2b1169
--- /dev/null
+++ b/contrib/ntp/sntp/libevent/m4/acx_pthread.m4
@@ -0,0 +1,279 @@
+##### http://autoconf-archive.cryp.to/acx_pthread.html
+#
+# SYNOPSIS
+#
+#   ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+#
+# DESCRIPTION
+#
+#   This macro figures out how to build C programs using POSIX threads.
+#   It sets the PTHREAD_LIBS output variable to the threads library and
+#   linker flags, and the PTHREAD_CFLAGS output variable to any special
+#   C compiler flags that are needed. (The user can also force certain
+#   compiler flags/libs to be tested by setting these environment
+#   variables.)
+#
+#   Also sets PTHREAD_CC to any special C compiler that is needed for
+#   multi-threaded programs (defaults to the value of CC otherwise).
+#   (This is necessary on AIX to use the special cc_r compiler alias.)
+#
+#   NOTE: You are assumed to not only compile your program with these
+#   flags, but also link it with them as well. e.g. you should link
+#   with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
+#   $LIBS
+#
+#   If you are only building threads programs, you may wish to use
+#   these variables in your default LIBS, CFLAGS, and CC:
+#
+#          LIBS="$PTHREAD_LIBS $LIBS"
+#          CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+#          CC="$PTHREAD_CC"
+#
+#   In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
+#   constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
+#   that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+#
+#   ACTION-IF-FOUND is a list of shell commands to run if a threads
+#   library is found, and ACTION-IF-NOT-FOUND is a list of commands to
+#   run it if it is not found. If ACTION-IF-FOUND is not specified, the
+#   default action will define HAVE_PTHREAD.
+#
+#   Please let the authors know if this macro fails on any platform, or
+#   if you have any other suggestions or comments. This macro was based
+#   on work by SGJ on autoconf scripts for FFTW (http://www.fftw.org/)
+#   (with help from M. Frigo), as well as ac_pthread and hb_pthread
+#   macros posted by Alejandro Forero Cuervo to the autoconf macro
+#   repository. We are also grateful for the helpful feedback of
+#   numerous users.
+#
+# LAST MODIFICATION
+#
+#   2007-07-29
+#
+# COPYLEFT
+#
+#   Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.edu>
+#
+#   This program is free software: you can redistribute it and/or
+#   modify it under the terms of the GNU General Public License as
+#   published by the Free Software Foundation, either version 3 of the
+#   License, or (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program. If not, see
+#   <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright
+#   owner gives unlimited permission to copy, distribute and modify the
+#   configure scripts that are the output of Autoconf when processing
+#   the Macro. You need not follow the terms of the GNU General Public
+#   License when using or distributing such scripts, even though
+#   portions of the text of the Macro appear in them. The GNU General
+#   Public License (GPL) does govern all other use of the material that
+#   constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the
+#   Autoconf Macro released by the Autoconf Macro Archive. When you
+#   make and distribute a modified version of the Autoconf Macro, you
+#   may extend this special exception to the GPL to apply to your
+#   modified version as well.
+
+AC_DEFUN([ACX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_SAVE
+AC_LANG_C
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
+        AC_MSG_RESULT($acx_pthread_ok)
+        if test x"$acx_pthread_ok" = xno; then
+                PTHREAD_LIBS=""
+                PTHREAD_CFLAGS=""
+        fi
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try.  Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important.  Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+#       other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+#      doesn't hurt to check since this sometimes defines pthreads too;
+#      also defines -D_REENTRANT)
+#      ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+        *solaris*)
+
+        # On Solaris (at least, for some versions), libc contains stubbed
+        # (non-functional) versions of the pthreads routines, so link-based
+        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
+        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
+        # a function called by this macro, so we could check for that, but
+        # who knows whether they'll stub that too in a future libc.)  So,
+        # we'll just look for -pthreads and -lpthread first:
+
+        acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+        ;;
+esac
+
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
+
+        case $flag in
+                none)
+                AC_MSG_CHECKING([whether pthreads work without any flags])
+                ;;
+
+                -*)
+                AC_MSG_CHECKING([whether pthreads work with $flag])
+                PTHREAD_CFLAGS="$flag"
+                ;;
+
+		pthread-config)
+		AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
+		if test x"$acx_pthread_config" = xno; then continue; fi
+		PTHREAD_CFLAGS="`pthread-config --cflags`"
+		PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+		;;
+
+                *)
+                AC_MSG_CHECKING([for the pthreads library -l$flag])
+                PTHREAD_LIBS="-l$flag"
+                ;;
+        esac
+
+        save_LIBS="$LIBS"
+        save_CFLAGS="$CFLAGS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Check for various functions.  We must include pthread.h,
+        # since some functions may be macros.  (On the Sequent, we
+        # need a special flag -Kthread to make this header compile.)
+        # We check for pthread_join because it is in -lpthread on IRIX
+        # while pthread_create is in libc.  We check for pthread_attr_init
+        # due to DEC craziness with -lpthreads.  We check for
+        # pthread_cleanup_push because it is one of the few pthread
+        # functions on Solaris that doesn't have a non-functional libc stub.
+        # We try pthread_create on general principles.
+        AC_TRY_LINK([#include <pthread.h>],
+                    [pthread_t th; pthread_join(th, 0);
+                     pthread_attr_init(0); pthread_cleanup_push(0, 0);
+                     pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+                    [acx_pthread_ok=yes])
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        AC_MSG_RESULT($acx_pthread_ok)
+        if test "x$acx_pthread_ok" = xyes; then
+                break;
+        fi
+
+        PTHREAD_LIBS=""
+        PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+	AC_MSG_CHECKING([for joinable pthread attribute])
+	attr_name=unknown
+	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+	    AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
+                        [attr_name=$attr; break])
+	done
+        AC_MSG_RESULT($attr_name)
+        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+            AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
+                               [Define to necessary symbol if this constant
+                                uses a non-standard name on your system.])
+        fi
+
+        AC_MSG_CHECKING([if more special flags are required for pthreads])
+        flag=no
+        case "${host_cpu}-${host_os}" in
+            *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+            *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+        esac
+        AC_MSG_RESULT(${flag})
+        if test "x$flag" != xno; then
+            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+        fi
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        # More AIX lossage: must compile with xlc_r or cc_r
+	if test x"$GCC" != xyes; then
+          AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
+        else
+          PTHREAD_CC=$CC
+	fi
+else
+        PTHREAD_CC="$CC"
+fi
+
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_CC)
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
+        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
+        :
+else
+        acx_pthread_ok=no
+        $2
+fi
+AC_LANG_RESTORE
+])dnl ACX_PTHREAD
diff --git a/contrib/ntp/sntp/libevent/sample/http-server.c b/contrib/ntp/sntp/libevent/sample/http-server.c
index 1cb89bc..cbb9c91 100644
--- a/contrib/ntp/sntp/libevent/sample/http-server.c
+++ b/contrib/ntp/sntp/libevent/sample/http-server.c
@@ -246,7 +246,10 @@ send_document_cb(struct evhttp_request *req, void *arg)
 			goto err;
 #endif
 
-		evbuffer_add_printf(evb, "<html>\n <head>\n"
+		evbuffer_add_printf(evb,
+                    "<!DOCTYPE html>\n"
+                    "<html>\n <head>\n"
+                    "  <meta charset='utf-8'>\n"
 		    "  <title>%s</title>\n"
 		    "  <base href='%s%s'>\n"
 		    " </head>\n"
@@ -274,7 +277,7 @@ send_document_cb(struct evhttp_request *req, void *arg)
 #endif
 		evbuffer_add_printf(evb, "</ul></body></html>\n");
 #ifdef _WIN32
-		CloseHandle(d);
+		FindClose(d);
 #else
 		closedir(d);
 #endif
diff --git a/contrib/ntp/sntp/libevent/sample/https-client.c b/contrib/ntp/sntp/libevent/sample/https-client.c
index e13ac4b..fbd5de8 100644
--- a/contrib/ntp/sntp/libevent/sample/https-client.c
+++ b/contrib/ntp/sntp/libevent/sample/https-client.c
@@ -96,7 +96,7 @@ static void
 syntax(void)
 {
 	fputs("Syntax:\n", stderr);
-	fputs("   https-client -url <https-url> [-data data-file.bin] [-ignore-cert]\n", stderr);
+	fputs("   https-client -url <https-url> [-data data-file.bin] [-ignore-cert] [-retries num]\n", stderr);
 	fputs("Example:\n", stderr);
 	fputs("   https-client -url https://ip.appspot.com/\n", stderr);
 
@@ -195,6 +195,7 @@ main(int argc, char **argv)
 	const char *scheme, *host, *path, *query;
 	char uri[256];
 	int port;
+	int retries = 0;
 
 	SSL_CTX *ssl_ctx;
 	SSL *ssl;
@@ -221,6 +222,12 @@ main(int argc, char **argv)
 			} else {
 				syntax();
 			}
+		} else if (!strcmp("-retries", argv[i])) {
+			if (i < argc - 1) {
+				retries = atoi(argv[i + 1]);
+			} else {
+				syntax();
+			}
 		} else if (!strcmp("-help", argv[i])) {
 			syntax();
 		}
@@ -346,8 +353,10 @@ main(int argc, char **argv)
 		die_openssl("SSL_new()");
 	}
 
+	#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
 	// Set hostname for SNI extension
 	SSL_set_tlsext_host_name(ssl, host);
+	#endif
 
 	if (strcasecmp(scheme, "http") == 0) {
 		bev = bufferevent_socket_new(base, -1, BEV_OPT_CLOSE_ON_FREE);
@@ -373,6 +382,10 @@ main(int argc, char **argv)
 		return 1;
 	}
 
+	if (retries > 0) {
+		evhttp_connection_set_retries(evcon, retries);
+	}
+
 	// Fire off the request
 	req = evhttp_request_new(http_request_done, bev);
 	if (req == NULL) {
@@ -402,7 +415,7 @@ main(int argc, char **argv)
 			evbuffer_add(output_buffer, buf, s);
 			bytes += s;
 		}
-		evutil_snprintf(buf, sizeof(buf)-1, "%lu", bytes);
+		evutil_snprintf(buf, sizeof(buf)-1, "%lu", (unsigned long)bytes);
 		evhttp_add_header(output_headers, "Content-Length", buf);
 		fclose(f);
 	}
diff --git a/contrib/ntp/sntp/libevent/sample/include.am b/contrib/ntp/sntp/libevent/sample/include.am
index 81980ac..75f87c7 100644
--- a/contrib/ntp/sntp/libevent/sample/include.am
+++ b/contrib/ntp/sntp/libevent/sample/include.am
@@ -30,7 +30,9 @@ noinst_HEADERS += \
 	sample/openssl_hostname_validation.h
 endif
 
+if BUILD_SAMPLES
 noinst_PROGRAMS += $(SAMPLES)
+endif
 
 $(SAMPLES) : libevent.la
 
diff --git a/contrib/ntp/sntp/libevent/test/include.am b/contrib/ntp/sntp/libevent/test/include.am
index ca36da4..4cd49ef 100644
--- a/contrib/ntp/sntp/libevent/test/include.am
+++ b/contrib/ntp/sntp/libevent/test/include.am
@@ -49,7 +49,8 @@ TESTS = test/test-script.sh
 test/test-script.sh: test/test.sh
 	cp $(top_srcdir)/test/test.sh $@
 
-DISTCLEANFILES += test/test-script.sh test/regress.gen.c test/regress.gen.h
+DISTCLEANFILES += test/test-script.sh
+DISTCLEANFILES += test/regress.gen.c test/regress.gen.h
 
 if BUILD_REGRESS
 BUILT_SOURCES += test/regress.gen.c test/regress.gen.h
diff --git a/contrib/ntp/sntp/libevent/test/regress.c b/contrib/ntp/sntp/libevent/test/regress.c
index 4d17b67..399ba2f 100644
--- a/contrib/ntp/sntp/libevent/test/regress.c
+++ b/contrib/ntp/sntp/libevent/test/regress.c
@@ -944,17 +944,18 @@ signal_cb(evutil_socket_t fd, short event, void *arg)
 }
 
 static void
-test_simplesignal(void)
+test_simplesignal_impl(int find_reorder)
 {
 	struct event ev;
 	struct itimerval itv;
 
-	setup_test("Simple signal: ");
 	evsignal_set(&ev, SIGALRM, signal_cb, &ev);
 	evsignal_add(&ev, NULL);
 	/* find bugs in which operations are re-ordered */
-	evsignal_del(&ev);
-	evsignal_add(&ev, NULL);
+	if (find_reorder) {
+		evsignal_del(&ev);
+		evsignal_add(&ev, NULL);
+	}
 
 	memset(&itv, 0, sizeof(itv));
 	itv.it_value.tv_sec = 0;
@@ -971,6 +972,20 @@ test_simplesignal(void)
 }
 
 static void
+test_simplestsignal(void)
+{
+	setup_test("Simplest one signal: ");
+	test_simplesignal_impl(0);
+}
+
+static void
+test_simplesignal(void)
+{
+	setup_test("Simple signal: ");
+	test_simplesignal_impl(1);
+}
+
+static void
 test_multiplesignal(void)
 {
 	struct event ev_one, ev_two;
@@ -1658,7 +1673,7 @@ static void
 test_active_later(void *ptr)
 {
 	struct basic_test_data *data = ptr;
-	struct event *ev1, *ev2;
+	struct event *ev1 = NULL, *ev2 = NULL;
 	struct event ev3, ev4;
 	struct timeval qsec = {0, 100000};
 	ev1 = event_new(data->base, data->pair[0], EV_READ|EV_PERSIST, read_and_drain_cb, NULL);
@@ -1693,10 +1708,15 @@ test_active_later(void *ptr)
 	 * it. */
 	event_active_later_(&ev3, EV_READ);
 	event_base_assert_ok_(data->base);
+
+end:
+	if (ev1)
+		event_free(ev1);
+	if (ev2)
+		event_free(ev2);
+
 	event_base_free(data->base);
 	data->base = NULL;
-end:
-	;
 }
 
 
@@ -2281,7 +2301,7 @@ evtag_fuzz(void *ptr)
 
 	for (j = 0; j < 100; j++) {
 		for (i = 0; i < (int)sizeof(buffer); i++)
-			buffer[i] = rand();
+			buffer[i] = test_weakrand();
 		evbuffer_drain(tmp, -1);
 		evbuffer_add(tmp, buffer, sizeof(buffer));
 
@@ -3294,6 +3314,7 @@ struct testcase_t evtag_testcases[] = {
 
 struct testcase_t signal_testcases[] = {
 #ifndef _WIN32
+	LEGACY(simplestsignal, TT_ISOLATED),
 	LEGACY(simplesignal, TT_ISOLATED),
 	LEGACY(multiplesignal, TT_ISOLATED),
 	LEGACY(immediatesignal, TT_ISOLATED),
diff --git a/contrib/ntp/sntp/libevent/test/regress.h b/contrib/ntp/sntp/libevent/test/regress.h
index a9892b0..bbfefe6 100644
--- a/contrib/ntp/sntp/libevent/test/regress.h
+++ b/contrib/ntp/sntp/libevent/test/regress.h
@@ -53,6 +53,10 @@ extern struct testcase_t listener_testcases[];
 extern struct testcase_t listener_iocp_testcases[];
 extern struct testcase_t thread_testcases[];
 
+extern struct evutil_weakrand_state test_weakrand_state;
+
+#define test_weakrand() (evutil_weakrand_(&test_weakrand_state))
+
 void regress_threads(void *);
 void test_bufferevent_zlib(void *);
 
@@ -114,7 +118,7 @@ int test_ai_eq_(const struct evutil_addrinfo *ai, const char *sockaddr_port,
 	} while (0)
 
 #define test_timeval_diff_leq(tv1, tv2, diff, tolerance)		\
-	tt_int_op(abs(timeval_msec_diff((tv1), (tv2)) - diff), <=, tolerance)
+	tt_int_op(labs(timeval_msec_diff((tv1), (tv2)) - diff), <=, tolerance)
 
 #define test_timeval_diff_eq(tv1, tv2, diff)				\
 	test_timeval_diff_leq((tv1), (tv2), (diff), 50)
diff --git a/contrib/ntp/sntp/libevent/test/regress_buffer.c b/contrib/ntp/sntp/libevent/test/regress_buffer.c
index ccb1487..4d6a5de 100644
--- a/contrib/ntp/sntp/libevent/test/regress_buffer.c
+++ b/contrib/ntp/sntp/libevent/test/regress_buffer.c
@@ -246,7 +246,7 @@ test_evbuffer(void *ptr)
 	if (memcmp(evbuffer_pullup(
 			   evb, -1), buffer, sizeof(buffer) / 2) != 0 ||
 	    memcmp(evbuffer_pullup(
-			   evb_two, -1), buffer, sizeof(buffer) != 0))
+			   evb_two, -1), buffer, sizeof(buffer)) != 0)
 		tt_abort_msg("Pullup did not preserve content");
 
 	evbuffer_validate(evb);
@@ -863,6 +863,10 @@ test_evbuffer_add_file(void *ptr)
 		evutil_closesocket(pair[0]);
 	if (pair[1] >= 0)
 		evutil_closesocket(pair[1]);
+	if (wev)
+		event_free(wev);
+	if (rev)
+		event_free(rev);
 	if (tmpfilename) {
 		unlink(tmpfilename);
 		free(tmpfilename);
@@ -1534,9 +1538,9 @@ test_evbuffer_callbacks(void *ptr)
 	tt_assert(!evbuffer_remove_cb(buf, log_change_callback, buf_out2));
 	evbuffer_validate(buf);
 
-	tt_str_op(evbuffer_pullup(buf_out1, -1), ==,
+	tt_str_op((const char *) evbuffer_pullup(buf_out1, -1), ==,
 		  "0->36; 36->26; 26->31; 31->38; ");
-	tt_str_op(evbuffer_pullup(buf_out2, -1), ==,
+	tt_str_op((const char *) evbuffer_pullup(buf_out2, -1), ==,
 		  "0->36; 31->38; 38->0; 0->1; ");
 	evbuffer_drain(buf_out1, evbuffer_get_length(buf_out1));
 	evbuffer_drain(buf_out2, evbuffer_get_length(buf_out2));
@@ -1552,7 +1556,7 @@ test_evbuffer_callbacks(void *ptr)
 	tt_uint_op(evbuffer_get_length(buf_out2), ==, 0);
 	evbuffer_setcb(buf, NULL, NULL);
 	evbuffer_add_printf(buf, "This will not.");
-	tt_str_op(evbuffer_pullup(buf, -1), ==, "This will not.");
+	tt_str_op((const char *) evbuffer_pullup(buf, -1), ==, "This will not.");
 	evbuffer_validate(buf);
 	evbuffer_drain(buf, evbuffer_get_length(buf));
 	evbuffer_validate(buf);
@@ -1660,7 +1664,7 @@ test_evbuffer_add_reference(void *ptr)
 	evbuffer_add(buf1, "You shake and shake the ", 24);
 	evbuffer_add_reference(buf1, "ketchup bottle", 14, ref_done_cb,
 	    (void*)3333);
-	evbuffer_add(buf1, ". Nothing comes and then a lot'll.", 42);
+	evbuffer_add(buf1, ". Nothing comes and then a lot'll.", 35);
 	evbuffer_free(buf1);
 	buf1 = NULL;
 	tt_int_op(ref_done_cb_called_count, ==, 3);
@@ -1840,6 +1844,42 @@ end:
 }
 
 static void
+test_evbuffer_peek_first_gt(void *info)
+{
+	struct evbuffer *buf = NULL, *tmp_buf = NULL;
+	struct evbuffer_ptr ptr;
+	struct evbuffer_iovec v[2];
+
+	buf = evbuffer_new();
+	tmp_buf = evbuffer_new();
+	evbuffer_add_printf(tmp_buf, "Contents of chunk 100\n");
+	evbuffer_add_buffer(buf, tmp_buf);
+	evbuffer_add_printf(tmp_buf, "Contents of chunk 1\n");
+	evbuffer_add_buffer(buf, tmp_buf);
+
+	evbuffer_ptr_set(buf, &ptr, 0, EVBUFFER_PTR_SET);
+
+	/** The only case that matters*/
+	tt_int_op(evbuffer_peek(buf, -1, &ptr, NULL, 0), ==, 2);
+	/** Just in case */
+	tt_int_op(evbuffer_peek(buf, -1, &ptr, v, 2), ==, 2);
+
+	evbuffer_ptr_set(buf, &ptr, 20, EVBUFFER_PTR_ADD);
+	tt_int_op(evbuffer_peek(buf, -1, &ptr, NULL, 0), ==, 2);
+	tt_int_op(evbuffer_peek(buf, -1, &ptr, v, 2), ==, 2);
+	tt_int_op(evbuffer_peek(buf, 2, &ptr, NULL, 0), ==, 1);
+	tt_int_op(evbuffer_peek(buf, 2, &ptr, v, 2), ==, 1);
+	tt_int_op(evbuffer_peek(buf, 3, &ptr, NULL, 0), ==, 2);
+	tt_int_op(evbuffer_peek(buf, 3, &ptr, v, 2), ==, 2);
+
+end:
+	if (buf)
+		evbuffer_free(buf);
+	if (tmp_buf)
+		evbuffer_free(tmp_buf);
+}
+
+static void
 test_evbuffer_peek(void *info)
 {
 	struct evbuffer *buf = NULL, *tmp_buf = NULL;
@@ -2096,7 +2136,7 @@ test_evbuffer_copyout(void *dummy)
 	    "When the rich Allobrogenses never kept amanuenses, "
 	    "And our only plots were piled in lakes at Berne.";
 	/* -- Kipling, "In The Neolithic Age" */
-	char tmp[256];
+	char tmp[1024];
 	struct evbuffer_ptr ptr;
 	struct evbuffer *buf;
 
@@ -2206,6 +2246,7 @@ struct testcase_t evbuffer_testcases[] = {
 	{ "multicast_drain", test_evbuffer_multicast_drain, 0, NULL, NULL },
 	{ "prepend", test_evbuffer_prepend, TT_FORK, NULL, NULL },
 	{ "peek", test_evbuffer_peek, 0, NULL, NULL },
+	{ "peek_first_gt", test_evbuffer_peek_first_gt, 0, NULL, NULL },
 	{ "freeze_start", test_evbuffer_freeze, 0, &nil_setup, (void*)"start" },
 	{ "freeze_end", test_evbuffer_freeze, 0, &nil_setup, (void*)"end" },
 	{ "add_iovec", test_evbuffer_add_iovec, 0, NULL, NULL},
diff --git a/contrib/ntp/sntp/libevent/test/regress_bufferevent.c b/contrib/ntp/sntp/libevent/test/regress_bufferevent.c
index 4ec2dcc..a1998ba 100644
--- a/contrib/ntp/sntp/libevent/test/regress_bufferevent.c
+++ b/contrib/ntp/sntp/libevent/test/regress_bufferevent.c
@@ -75,6 +75,7 @@
 #include "event2/util.h"
 
 #include "bufferevent-internal.h"
+#include "evthread-internal.h"
 #include "util-internal.h"
 #ifdef _WIN32
 #include "iocp-internal.h"
@@ -173,9 +174,9 @@ test_bufferevent_impl(int use_pair)
 
 	event_dispatch();
 
-	bufferevent_free(bev1);
-	tt_ptr_op(bufferevent_pair_get_partner(bev2), ==, NULL);
 	bufferevent_free(bev2);
+	tt_ptr_op(bufferevent_pair_get_partner(bev1), ==, NULL);
+	bufferevent_free(bev1);
 
 	if (test_ok != 2)
 		test_ok = 0;
@@ -195,6 +196,143 @@ test_bufferevent_pair(void)
 	test_bufferevent_impl(1);
 }
 
+#if defined(EVTHREAD_USE_PTHREADS_IMPLEMENTED)
+/**
+ * Trace lock/unlock/alloc/free for locks.
+ * (More heavier then evthread_debug*)
+ */
+typedef struct
+{
+	void *lock;
+	enum {
+		ALLOC, FREE,
+	} status;
+	size_t locked /** allow recursive locking */;
+} lock_wrapper;
+struct lock_unlock_base
+{
+	/* Original callbacks */
+	struct evthread_lock_callbacks cbs;
+	/* Map of locks */
+	lock_wrapper *locks;
+	size_t nr_locks;
+} lu_base = {
+	.locks = NULL,
+};
+
+static lock_wrapper *lu_find(void *lock_)
+{
+	size_t i;
+	for (i = 0; i < lu_base.nr_locks; ++i) {
+		lock_wrapper *lock = &lu_base.locks[i];
+		if (lock->lock == lock_)
+			return lock;
+	}
+	return NULL;
+}
+
+static void *trace_lock_alloc(unsigned locktype)
+{
+	++lu_base.nr_locks;
+	lu_base.locks = realloc(lu_base.locks,
+		sizeof(lock_wrapper) * lu_base.nr_locks);
+	void *lock = lu_base.cbs.alloc(locktype);
+	lu_base.locks[lu_base.nr_locks - 1] = (lock_wrapper){ lock, ALLOC, 0 };
+	return lock;
+}
+static void trace_lock_free(void *lock_, unsigned locktype)
+{
+	lock_wrapper *lock = lu_find(lock_);
+	if (!lock || lock->status == FREE || lock->locked) {
+		__asm__("int3");
+		TT_FAIL(("lock: free error"));
+	} else {
+		lock->status = FREE;
+		lu_base.cbs.free(lock_, locktype);
+	}
+}
+static int trace_lock_lock(unsigned mode, void *lock_)
+{
+	lock_wrapper *lock = lu_find(lock_);
+	if (!lock || lock->status == FREE) {
+		TT_FAIL(("lock: lock error"));
+		return -1;
+	} else {
+		++lock->locked;
+		return lu_base.cbs.lock(mode, lock_);
+	}
+}
+static int trace_lock_unlock(unsigned mode, void *lock_)
+{
+	lock_wrapper *lock = lu_find(lock_);
+	if (!lock || lock->status == FREE || !lock->locked) {
+		TT_FAIL(("lock: unlock error"));
+		return -1;
+	} else {
+		--lock->locked;
+		return lu_base.cbs.unlock(mode, lock_);
+	}
+}
+static void lock_unlock_free_thread_cbs()
+{
+	event_base_free(NULL);
+
+	/** drop immutable flag */
+	evthread_set_lock_callbacks(NULL);
+	/** avoid calling of event_global_setup_locks_() for new cbs */
+	libevent_global_shutdown();
+	/** drop immutable flag for non-debug ops (since called after shutdown) */
+	evthread_set_lock_callbacks(NULL);
+}
+
+static int use_lock_unlock_profiler(void)
+{
+	struct evthread_lock_callbacks cbs = {
+		EVTHREAD_LOCK_API_VERSION,
+		EVTHREAD_LOCKTYPE_RECURSIVE,
+		trace_lock_alloc,
+		trace_lock_free,
+		trace_lock_lock,
+		trace_lock_unlock,
+	};
+	memcpy(&lu_base.cbs, evthread_get_lock_callbacks(),
+		sizeof(lu_base.cbs));
+	{
+		lock_unlock_free_thread_cbs();
+
+		evthread_set_lock_callbacks(&cbs);
+		/** re-create debug locks correctly */
+		evthread_enable_lock_debugging();
+
+		event_init();
+	}
+	return 0;
+}
+static void free_lock_unlock_profiler(struct basic_test_data *data)
+{
+	lock_unlock_free_thread_cbs();
+	free(lu_base.locks);
+	data->base = NULL;
+}
+
+static void test_bufferevent_pair_release_lock(void *arg)
+{
+	struct basic_test_data *data = arg;
+	use_lock_unlock_profiler();
+	{
+		struct bufferevent *pair[2];
+		if (!bufferevent_pair_new(NULL, BEV_OPT_THREADSAFE, pair)) {
+			bufferevent_free(pair[0]);
+			bufferevent_free(pair[1]);
+		} else
+			tt_abort_perror("bufferevent_pair_new");
+	}
+	free_lock_unlock_profiler(data);
+end:
+	;
+}
+#endif
+
 /*
  * test watermarks and bufferevent
  */
@@ -287,6 +425,11 @@ test_bufferevent_watermarks_impl(int use_pair)
 	tt_int_op(low, ==, 100);
 	tt_int_op(high, ==, 2000);
 
+	{
+	int r = bufferevent_getwatermark(bev1, EV_WRITE | EV_READ, &low, &high);
+	tt_int_op(r, !=, 0);
+	}
+
 	bufferevent_write(bev1, buffer, sizeof(buffer));
 
 	event_dispatch();
@@ -944,6 +1087,11 @@ struct testcase_t bufferevent_testcases[] = {
 
 	LEGACY(bufferevent, TT_ISOLATED),
 	LEGACY(bufferevent_pair, TT_ISOLATED),
+#if defined(EVTHREAD_USE_PTHREADS_IMPLEMENTED)
+	{ "bufferevent_pair_release_lock", test_bufferevent_pair_release_lock,
+	  TT_FORK|TT_ISOLATED|TT_NEED_THREADS|TT_NEED_BASE|TT_LEGACY,
+	  &basic_setup, NULL },
+#endif
 	LEGACY(bufferevent_watermarks, TT_ISOLATED),
 	LEGACY(bufferevent_pair_watermarks, TT_ISOLATED),
 	LEGACY(bufferevent_filters, TT_ISOLATED),
diff --git a/contrib/ntp/sntp/libevent/test/regress_dns.c b/contrib/ntp/sntp/libevent/test/regress_dns.c
index 338c4ee..6d6b484 100644
--- a/contrib/ntp/sntp/libevent/test/regress_dns.c
+++ b/contrib/ntp/sntp/libevent/test/regress_dns.c
@@ -406,6 +406,22 @@ dns_server(void)
 	 * the only nameserver. */
 	evdns_base_nameserver_sockaddr_add(base, (struct sockaddr*)&ss, slen, 0);
 	tt_int_op(evdns_base_count_nameservers(base), ==, 1);
+	{
+		struct sockaddr_storage ss2;
+		int slen2;
+
+		memset(&ss2, 0, sizeof(ss2));
+
+		slen2 = evdns_base_get_nameserver_addr(base, 0, (struct sockaddr *)&ss2, 3);
+		tt_int_op(slen2, ==, slen);
+		tt_int_op(ss2.ss_family, ==, 0);
+		slen2 = evdns_base_get_nameserver_addr(base, 0, (struct sockaddr *)&ss2, sizeof(ss2));
+		tt_int_op(slen2, ==, slen);
+		tt_mem_op(&ss2, ==, &ss, slen);
+
+		slen2 = evdns_base_get_nameserver_addr(base, 1, (struct sockaddr *)&ss2, sizeof(ss2));
+		tt_int_op(-1, ==, slen2);
+	}
 
 	/* Send some queries. */
 	evdns_base_resolve_ipv4(base, "zz.example.com", DNS_QUERY_NO_SEARCH,
@@ -443,6 +459,7 @@ end:
 
 static int n_replies_left;
 static struct event_base *exit_base;
+static struct evdns_server_port *exit_port;
 
 struct generic_dns_callback_result {
 	int result;
@@ -483,8 +500,14 @@ generic_dns_callback(int result, char type, int count, int ttl, void *addresses,
 		res->addrs = res->addrs_buf;
 	}
 
-	if (--n_replies_left == 0)
-		event_base_loopexit(exit_base, NULL);
+	--n_replies_left;
+	if (n_replies_left == 0) {
+		if (exit_port) {
+			evdns_close_server_port(exit_port);
+			exit_port = NULL;
+		} else
+			event_base_loopexit(exit_base, NULL);
+	}
 }
 
 static struct regress_dns_server_table search_table[] = {
@@ -664,7 +687,7 @@ end:
 }
 
 static void
-dns_retry_test(void *arg)
+dns_retry_test_impl(void *arg, int flags)
 {
 	struct basic_test_data *data = arg;
 	struct event_base *base = data->base;
@@ -681,7 +704,7 @@ dns_retry_test(void *arg)
 	tt_assert(port);
 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
 
-	dns = evdns_base_new(base, 0);
+	dns = evdns_base_new(base, flags);
 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
 	tt_assert(! evdns_base_set_option(dns, "timeout", "0.2"));
 	tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "10"));
@@ -736,6 +759,16 @@ end:
 	if (port)
 		evdns_close_server_port(port);
 }
+static void
+dns_retry_test(void *arg)
+{
+	dns_retry_test_impl(arg, 0);
+}
+static void
+dns_retry_disable_when_inactive_test(void *arg)
+{
+	dns_retry_test_impl(arg, EVDNS_BASE_DISABLE_WHEN_INACTIVE);
+}
 
 static struct regress_dns_server_table internal_error_table[] = {
 	/* Error 4 (NOTIMPL) makes us reissue the request to another server
@@ -753,7 +786,7 @@ static struct regress_dns_server_table reissue_table[] = {
 };
 
 static void
-dns_reissue_test(void *arg)
+dns_reissue_test_impl(void *arg, int flags)
 {
 	struct basic_test_data *data = arg;
 	struct event_base *base = data->base;
@@ -772,7 +805,7 @@ dns_reissue_test(void *arg)
 	evutil_snprintf(buf1, sizeof(buf1), "127.0.0.1:%d", (int)portnum1);
 	evutil_snprintf(buf2, sizeof(buf2), "127.0.0.1:%d", (int)portnum2);
 
-	dns = evdns_base_new(base, 0);
+	dns = evdns_base_new(base, flags);
 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf1));
 	tt_assert(! evdns_base_set_option(dns, "timeout:", "0.3"));
 	tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "2"));
@@ -805,6 +838,16 @@ end:
 	if (port2)
 		evdns_close_server_port(port2);
 }
+static void
+dns_reissue_test(void *arg)
+{
+	dns_reissue_test_impl(arg, 0);
+}
+static void
+dns_reissue_disable_when_inactive_test(void *arg)
+{
+	dns_reissue_test_impl(arg, EVDNS_BASE_DISABLE_WHEN_INACTIVE);
+}
 
 #if 0
 static void
@@ -819,21 +862,29 @@ dumb_bytes_fn(char *p, size_t n)
 #endif
 
 static void
-dns_inflight_test(void *arg)
+dns_inflight_test_impl(void *arg, int flags)
 {
 	struct basic_test_data *data = arg;
 	struct event_base *base = data->base;
 	struct evdns_base *dns = NULL;
+	struct evdns_server_port *dns_port = NULL;
 	ev_uint16_t portnum = 0;
 	char buf[64];
+	int disable_when_inactive = flags & EVDNS_BASE_DISABLE_WHEN_INACTIVE;
 
 	struct generic_dns_callback_result r[20];
 	int i;
 
-	tt_assert(regress_dnsserver(base, &portnum, reissue_table));
+	dns_port = regress_get_dnsserver(base, &portnum, NULL,
+		regress_dns_server_cb, reissue_table);
+	tt_assert(dns_port);
+	if (disable_when_inactive) {
+		exit_port = dns_port;
+	}
+
 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
 
-	dns = evdns_base_new(base, 0);
+	dns = evdns_base_new(base, flags);
 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
 	tt_assert(! evdns_base_set_option(dns, "max-inflight:", "3"));
 	tt_assert(! evdns_base_set_option(dns, "randomize-case:", "0"));
@@ -855,7 +906,65 @@ dns_inflight_test(void *arg)
 end:
 	if (dns)
 		evdns_base_free(dns, 0);
+	if (exit_port) {
+		evdns_close_server_port(exit_port);
+		exit_port = NULL;
+	} else if (! disable_when_inactive) {
+		evdns_close_server_port(dns_port);
+	}
+}
+
+static void
+dns_inflight_test(void *arg)
+{
+	dns_inflight_test_impl(arg, 0);
+}
+
+static void
+dns_disable_when_inactive_test(void *arg)
+{
+	dns_inflight_test_impl(arg, EVDNS_BASE_DISABLE_WHEN_INACTIVE);
+}
+
+static void
+dns_disable_when_inactive_no_ns_test(void *arg)
+{
+	struct basic_test_data *data = arg;
+	struct event_base *base = data->base, *inactive_base;
+	struct evdns_base *dns = NULL;
+	ev_uint16_t portnum = 0;
+	char buf[64];
+	struct generic_dns_callback_result r;
+
+	inactive_base = event_base_new();
+	tt_assert(inactive_base);
+
+	/** Create dns server with inactive base, to avoid replying to clients */
+	tt_assert(regress_dnsserver(inactive_base, &portnum, search_table));
+	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
+
+	dns = evdns_base_new(base, EVDNS_BASE_DISABLE_WHEN_INACTIVE);
+	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
+	tt_assert(! evdns_base_set_option(dns, "timeout:", "0.1"));
+
+	evdns_base_resolve_ipv4(dns, "foof.example.com", 0, generic_dns_callback, &r);
+	n_replies_left = 1;
+	exit_base = base;
+
+	event_base_dispatch(base);
+
+	tt_int_op(n_replies_left, ==, 0);
+
+	tt_int_op(r.result, ==, DNS_ERR_TIMEOUT);
+	tt_int_op(r.count, ==, 0);
+	tt_ptr_op(r.addrs, ==, NULL);
+
+end:
+	if (dns)
+		evdns_base_free(dns, 0);
 	regress_clean_dnsserver();
+	if (inactive_base)
+		event_base_free(inactive_base);
 }
 
 /* === Test for bufferevent_socket_connect_hostname */
@@ -1563,7 +1672,8 @@ test_getaddrinfo_async(void *arg)
 end:
 	if (local_outcome.ai)
 		evutil_freeaddrinfo(local_outcome.ai);
-	for (i=0;i<10;++i) {
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+	for (i=0;i<(int)ARRAY_SIZE(a_out);++i) {
 		if (a_out[i].ai)
 			evutil_freeaddrinfo(a_out[i].ai);
 	}
@@ -1694,9 +1804,15 @@ testleak_setup(const struct testcase_t *testcase)
 	struct testleak_env_t *env;
 
 	allocated_chunks = 0;
+
+	/* Reset allocation counter, to start allocations from the very beginning.
+	 * (this will avoid false-positive negative numbers for allocated_chunks)
+	 */
+	libevent_global_shutdown();
+
 	event_set_mem_functions(cnt_malloc, cnt_realloc, cnt_free);
-	if (!libevent_tests_running_in_debug_mode)
-		event_enable_debug_mode();
+
+	event_enable_debug_mode();
 
 	/* not mm_calloc: we don't want to mess with the count. */
 	env = calloc(1, sizeof(struct testleak_env_t));
@@ -1717,8 +1833,8 @@ testleak_cleanup(const struct testcase_t *testcase, void *env_)
 #ifdef EVENT__DISABLE_DEBUG_MODE
 	tt_int_op(allocated_chunks, ==, 0);
 #else
-	/* FIXME: that's `1' because of event_debug_map_HT_GROW */
-	tt_int_op(allocated_chunks, ==, 1);
+	libevent_global_shutdown();
+	tt_int_op(allocated_chunks, ==, 0);
 #endif
 	ok = 1;
 end:
@@ -1791,6 +1907,7 @@ dbg_leak_resume(void *env_, int cancel, int send_err_shutdown)
 end:
 	evdns_base_free(env->dns_base, send_err_shutdown);
 	env->dns_base = 0;
+
 	event_base_free(env->base);
 	env->base = 0;
 }
@@ -1875,6 +1992,8 @@ end:
 		evdns_base_free(dns_base, 1);
 	if (server)
 		evdns_close_server_port(server);
+	if (base)
+		event_base_free(base);
 	if (fd >= 0)
 		evutil_closesocket(fd);
 }
@@ -1894,10 +2013,18 @@ struct testcase_t dns_testcases[] = {
 	{ "search_cancel", dns_search_cancel_test,
 	  TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
 	{ "retry", dns_retry_test, TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL },
+	{ "retry_disable_when_inactive", dns_retry_disable_when_inactive_test,
+	  TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL },
 	{ "reissue", dns_reissue_test, TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL },
+	{ "reissue_disable_when_inactive", dns_reissue_disable_when_inactive_test,
+	  TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL },
 	{ "inflight", dns_inflight_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
 	{ "bufferevent_connect_hostname", test_bufferevent_connect_hostname,
 	  TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
+	{ "disable_when_inactive", dns_disable_when_inactive_test,
+	  TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
+	{ "disable_when_inactive_no_ns", dns_disable_when_inactive_no_ns_test,
+	  TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
 
 	{ "getaddrinfo_async", test_getaddrinfo_async,
 	  TT_FORK|TT_NEED_BASE, &basic_setup, (char*)"" },
diff --git a/contrib/ntp/sntp/libevent/test/regress_finalize.c b/contrib/ntp/sntp/libevent/test/regress_finalize.c
index 61a6313..552210f 100644
--- a/contrib/ntp/sntp/libevent/test/regress_finalize.c
+++ b/contrib/ntp/sntp/libevent/test/regress_finalize.c
@@ -25,6 +25,7 @@
  */
 
 #include "event2/event-config.h"
+#include "evconfig-private.h"
 #include "tinytest.h"
 #include "tinytest_macros.h"
 #include <stdlib.h>
diff --git a/contrib/ntp/sntp/libevent/test/regress_http.c b/contrib/ntp/sntp/libevent/test/regress_http.c
index ca7d515..35f6dd7 100644
--- a/contrib/ntp/sntp/libevent/test/regress_http.c
+++ b/contrib/ntp/sntp/libevent/test/regress_http.c
@@ -105,8 +105,12 @@ http_bind(struct evhttp *myhttp, ev_uint16_t *pport, int ipv6)
 	else
 		sock = evhttp_bind_socket_with_handle(myhttp, "127.0.0.1", *pport);
 
-	if (sock == NULL)
-		event_errx(1, "Could not start web server");
+	if (sock == NULL) {
+		if (ipv6)
+			return -1;
+		else
+			event_errx(1, "Could not start web server");
+	}
 
 	port = regress_get_socket_port(evhttp_bound_socket_get_fd(sock));
 	if (port < 0)
@@ -395,7 +399,7 @@ http_basic_test(void *arg)
 {
 	struct basic_test_data *data = arg;
 	struct timeval tv;
-	struct bufferevent *bev;
+	struct bufferevent *bev = NULL;
 	evutil_socket_t fd;
 	const char *http_request;
 	ev_uint16_t port = 0, port2 = 0;
@@ -480,7 +484,8 @@ http_basic_test(void *arg)
 
 	evhttp_free(http);
  end:
-	;
+	if (bev)
+		bufferevent_free(bev);
 }
 
 
@@ -714,6 +719,7 @@ http_delete_test(void *arg)
 
 	http = http_setup(&port, data->base, 0);
 
+	tt_assert(http);
 	fd = http_connect("127.0.0.1", port);
 	tt_int_op(fd, >=, 0);
 
@@ -734,6 +740,7 @@ http_delete_test(void *arg)
 
 	bufferevent_free(bev);
 	evutil_closesocket(fd);
+	fd = -1;
 
 	evhttp_free(http);
 
@@ -953,7 +960,8 @@ static void http_request_done(struct evhttp_request *, void *);
 static void http_request_empty_done(struct evhttp_request *, void *);
 
 static void
-http_connection_test_(struct basic_test_data *data, int persistent, const char *address, struct evdns_base *dnsbase, int ipv6)
+http_connection_test_(struct basic_test_data *data, int persistent,
+	const char *address, struct evdns_base *dnsbase, int ipv6, int family)
 {
 	ev_uint16_t port = 0;
 	struct evhttp_connection *evcon = NULL;
@@ -962,9 +970,14 @@ http_connection_test_(struct basic_test_data *data, int persistent, const char *
 	test_ok = 0;
 
 	http = http_setup(&port, data->base, ipv6);
+	if (!http && ipv6) {
+		tt_skip();
+	}
+	tt_assert(http);
 
 	evcon = evhttp_connection_base_new(data->base, dnsbase, address, port);
 	tt_assert(evcon);
+	evhttp_connection_set_family(evcon, family);
 
 	tt_assert(evhttp_connection_get_base(evcon) == data->base);
 
@@ -1038,12 +1051,12 @@ http_connection_test_(struct basic_test_data *data, int persistent, const char *
 static void
 http_connection_test(void *arg)
 {
-	http_connection_test_(arg, 0, "127.0.0.1", NULL, 0);
+	http_connection_test_(arg, 0, "127.0.0.1", NULL, 0, AF_UNSPEC);
 }
 static void
 http_persist_connection_test(void *arg)
 {
-	http_connection_test_(arg, 1, "127.0.0.1", NULL, 0);
+	http_connection_test_(arg, 1, "127.0.0.1", NULL, 0, AF_UNSPEC);
 }
 
 static struct regress_dns_server_table search_table[] = {
@@ -1147,6 +1160,63 @@ http_connection_async_test(void *arg)
 }
 
 static void
+http_autofree_connection_test(void *arg)
+{
+	struct basic_test_data *data = arg;
+	ev_uint16_t port = 0;
+	struct evhttp_connection *evcon = NULL;
+	struct evhttp_request *req[2] = { NULL };
+
+	test_ok = 0;
+	http = http_setup(&port, data->base, 0);
+
+	evcon = evhttp_connection_base_new(data->base, NULL, "127.0.0.1", port);
+	tt_assert(evcon);
+
+	/*
+	 * At this point, we want to schedule two request to the HTTP
+	 * server using our make request method.
+	 */
+	req[0] = evhttp_request_new(http_request_empty_done, data->base);
+	req[1] = evhttp_request_new(http_request_empty_done, data->base);
+
+	/* Add the information that we care about */
+	evhttp_add_header(evhttp_request_get_output_headers(req[0]), "Host", "somehost");
+	evhttp_add_header(evhttp_request_get_output_headers(req[0]), "Connection", "close");
+	evhttp_add_header(evhttp_request_get_output_headers(req[0]), "Empty", "itis");
+	evhttp_add_header(evhttp_request_get_output_headers(req[1]), "Host", "somehost");
+	evhttp_add_header(evhttp_request_get_output_headers(req[1]), "Connection", "close");
+	evhttp_add_header(evhttp_request_get_output_headers(req[1]), "Empty", "itis");
+
+	/* We give ownership of the request to the connection */
+	if (evhttp_make_request(evcon, req[0], EVHTTP_REQ_GET, "/test") == -1) {
+		tt_abort_msg("couldn't make request");
+	}
+	if (evhttp_make_request(evcon, req[1], EVHTTP_REQ_GET, "/test") == -1) {
+		tt_abort_msg("couldn't make request");
+	}
+
+	/*
+	 * Tell libevent to free the connection when the request completes
+	 *	We then set the evcon pointer to NULL since we don't want to free it
+	 *	when this function ends.
+	 */
+	evhttp_connection_free_on_completion(evcon);
+	evcon = NULL;
+
+	event_base_dispatch(data->base);
+
+	/* at this point, the http server should have no connection */
+	tt_assert(TAILQ_FIRST(&http->connections) == NULL);
+
+ end:
+	if (evcon)
+		evhttp_connection_free(evcon);
+	if (http)
+		evhttp_free(http);
+}
+
+static void
 http_request_never_call(struct evhttp_request *req, void *arg)
 {
 	fprintf(stdout, "FAILED\n");
@@ -2743,6 +2813,7 @@ http_incomplete_test_(struct basic_test_data *data, int use_timeout)
 	bufferevent_free(bev);
 	if (use_timeout) {
 		evutil_closesocket(fd);
+		fd = -1;
 	}
 
 	evhttp_free(http);
@@ -3748,7 +3819,7 @@ static struct regress_dns_server_table ipv6_search_table[] = {
 };
 
 static void
-http_ipv6_for_domain_test(void *arg)
+http_ipv6_for_domain_test_impl(void *arg, int family)
 {
 	struct basic_test_data *data = arg;
 	struct evdns_base *dns_base = NULL;
@@ -3765,13 +3836,19 @@ http_ipv6_for_domain_test(void *arg)
 	evutil_snprintf(address, sizeof(address), "127.0.0.1:%d", portnum);
 	evdns_base_nameserver_ip_add(dns_base, address);
 
-	http_connection_test_(arg, 0 /* not persistent */, "localhost", dns_base, 1 /* ipv6 */);
+	http_connection_test_(arg, 0 /* not persistent */, "localhost", dns_base,
+		1 /* ipv6 */, family);
 
  end:
 	if (dns_base)
 		evdns_base_free(dns_base, 0);
 	regress_clean_dnsserver();
 }
+static void
+http_ipv6_for_domain_test(void *arg)
+{
+	http_ipv6_for_domain_test_impl(arg, AF_UNSPEC);
+}
 
 static void
 http_request_get_addr_on_close(struct evhttp_connection *evcon, void *arg)
@@ -3836,6 +3913,22 @@ http_get_addr_test(void *arg)
 		evhttp_free(http);
 }
 
+static void
+http_set_family_test(void *arg)
+{
+	http_connection_test_(arg, 0, "127.0.0.1", NULL, 0, AF_UNSPEC);
+}
+static void
+http_set_family_ipv4_test(void *arg)
+{
+	http_connection_test_(arg, 0, "127.0.0.1", NULL, 0, AF_INET);
+}
+static void
+http_set_family_ipv6_test(void *arg)
+{
+	http_ipv6_for_domain_test_impl(arg, AF_INET6);
+}
+
 #define HTTP_LEGACY(name)						\
 	{ #name, run_legacy_test_fn, TT_ISOLATED|TT_LEGACY, &legacy_setup, \
 		    http_##name##_test }
@@ -3861,6 +3954,7 @@ struct testcase_t http_testcases[] = {
 	HTTP(failure),
 	HTTP(connection),
 	HTTP(persist_connection),
+	HTTP(autofree_connection),
 	HTTP(connection_async),
 	HTTP(close_detection),
 	HTTP(close_detection_delay),
@@ -3888,6 +3982,10 @@ struct testcase_t http_testcases[] = {
 	HTTP(ipv6_for_domain),
 	HTTP(get_addr),
 
+	HTTP(set_family),
+	HTTP(set_family_ipv4),
+	HTTP(set_family_ipv6),
+
 	END_OF_TESTCASES
 };
 
diff --git a/contrib/ntp/sntp/libevent/test/regress_main.c b/contrib/ntp/sntp/libevent/test/regress_main.c
index 58cbe5f..3198ced 100644
--- a/contrib/ntp/sntp/libevent/test/regress_main.c
+++ b/contrib/ntp/sntp/libevent/test/regress_main.c
@@ -90,6 +90,8 @@
 #include "../iocp-internal.h"
 #include "../event-internal.h"
 
+struct evutil_weakrand_state test_weakrand_state;
+
 long
 timeval_msec_diff(const struct timeval *start, const struct timeval *end)
 {
@@ -452,6 +454,8 @@ main(int argc, const char **argv)
 
 	tinytest_set_aliases(testaliases);
 
+	evutil_weakrand_seed_(&test_weakrand_state, 0);
+
 	if (tinytest_main(argc,argv,testgroups))
 		return 1;
 
diff --git a/contrib/ntp/sntp/libevent/test/regress_minheap.c b/contrib/ntp/sntp/libevent/test/regress_minheap.c
index a1f554e..05db32e 100644
--- a/contrib/ntp/sntp/libevent/test/regress_minheap.c
+++ b/contrib/ntp/sntp/libevent/test/regress_minheap.c
@@ -30,12 +30,13 @@
 
 #include "tinytest.h"
 #include "tinytest_macros.h"
+#include "regress.h"
 
 static void
 set_random_timeout(struct event *ev)
 {
-	ev->ev_timeout.tv_sec = rand();
-	ev->ev_timeout.tv_usec = rand() & 0xfffff;
+	ev->ev_timeout.tv_sec = test_weakrand();
+	ev->ev_timeout.tv_usec = test_weakrand() & 0xfffff;
 	ev->ev_timeout_pos.min_heap_idx = -1;
 }
 
diff --git a/contrib/ntp/sntp/libevent/test/regress_ssl.c b/contrib/ntp/sntp/libevent/test/regress_ssl.c
index c211341..bf9b46b 100644
--- a/contrib/ntp/sntp/libevent/test/regress_ssl.c
+++ b/contrib/ntp/sntp/libevent/test/regress_ssl.c
@@ -194,6 +194,7 @@ respond_to_number(struct bufferevent *bev, void *ctx)
 	n = atoi(line);
 	if (n <= 0)
 		TT_FAIL(("Bad number: %s", line));
+	free(line);
 	TT_BLATHER(("The number was %d", n));
 	if (n == 1001) {
 		++test_is_done;
diff --git a/contrib/ntp/sntp/libevent/test/regress_thread.c b/contrib/ntp/sntp/libevent/test/regress_thread.c
index 612bf1d..c42668e 100644
--- a/contrib/ntp/sntp/libevent/test/regress_thread.c
+++ b/contrib/ntp/sntp/libevent/test/regress_thread.c
@@ -361,7 +361,7 @@ thread_conditions_simple(void *arg)
 			    &tv_signal);
 			diff2 = timeval_msec_diff(&actual_delay,
 			    &tv_broadcast);
-			if (abs(diff1) < abs(diff2)) {
+			if (labs(diff1) < labs(diff2)) {
 				TT_BLATHER(("%d looks like a signal\n", i));
 				target_delay = &tv_signal;
 				++n_signal;
@@ -382,7 +382,8 @@ thread_conditions_simple(void *arg)
 	tt_int_op(n_signal, ==, 1);
 
 end:
-	;
+	EVTHREAD_FREE_LOCK(cond.lock, EVTHREAD_LOCKTYPE_RECURSIVE);
+	EVTHREAD_FREE_COND(cond.cond);
 }
 
 #define CB_COUNT 128
diff --git a/contrib/ntp/sntp/libevent/test/regress_util.c b/contrib/ntp/sntp/libevent/test/regress_util.c
index d64d002..60f085b 100644
--- a/contrib/ntp/sntp/libevent/test/regress_util.c
+++ b/contrib/ntp/sntp/libevent/test/regress_util.c
@@ -179,10 +179,10 @@ regress_ipv6_parse(void *ptr)
 		for (j = 0; j < 4; ++j) {
 			/* Can't use s6_addr32 here; some don't have it. */
 			ev_uint32_t u =
-				(in6.s6_addr[j*4  ] << 24) |
-				(in6.s6_addr[j*4+1] << 16) |
-				(in6.s6_addr[j*4+2] << 8) |
-				(in6.s6_addr[j*4+3]);
+			    ((ev_uint32_t)in6.s6_addr[j*4  ] << 24) |
+			    ((ev_uint32_t)in6.s6_addr[j*4+1] << 16) |
+			    ((ev_uint32_t)in6.s6_addr[j*4+2] << 8) |
+			    ((ev_uint32_t)in6.s6_addr[j*4+3]);
 			if (u != ent->res[j]) {
 				TT_FAIL(("%s did not parse as expected.", ent->addr));
 				continue;
@@ -726,46 +726,48 @@ test_evutil_integers(void *arg)
 	tt_assert(u64 > 0);
 	tt_assert(i64 > 0);
 	u64++;
-	i64++;
+/*	i64++; */
 	tt_assert(u64 == 0);
-	tt_assert(i64 == EV_INT64_MIN);
-	tt_assert(i64 < 0);
+/*	tt_assert(i64 == EV_INT64_MIN); */
+/*	tt_assert(i64 < 0); */
 
 	u32 = EV_UINT32_MAX;
 	i32 = EV_INT32_MAX;
 	tt_assert(u32 > 0);
 	tt_assert(i32 > 0);
 	u32++;
-	i32++;
+/*	i32++; */
 	tt_assert(u32 == 0);
-	tt_assert(i32 == EV_INT32_MIN);
-	tt_assert(i32 < 0);
+/*	tt_assert(i32 == EV_INT32_MIN); */
+/*	tt_assert(i32 < 0); */
 
 	u16 = EV_UINT16_MAX;
 	i16 = EV_INT16_MAX;
 	tt_assert(u16 > 0);
 	tt_assert(i16 > 0);
 	u16++;
-	i16++;
+/*	i16++; */
 	tt_assert(u16 == 0);
-	tt_assert(i16 == EV_INT16_MIN);
-	tt_assert(i16 < 0);
+/*	tt_assert(i16 == EV_INT16_MIN); */
+/* 	tt_assert(i16 < 0); */
 
 	u8 = EV_UINT8_MAX;
 	i8 = EV_INT8_MAX;
 	tt_assert(u8 > 0);
 	tt_assert(i8 > 0);
 	u8++;
-	i8++;
+/*	i8++;*/
 	tt_assert(u8 == 0);
-	tt_assert(i8 == EV_INT8_MIN);
-	tt_assert(i8 < 0);
+/*	tt_assert(i8 == EV_INT8_MIN); */
+/*	tt_assert(i8 < 0); */
 
+/*
 	ssize = EV_SSIZE_MAX;
 	tt_assert(ssize > 0);
 	ssize++;
 	tt_assert(ssize < 0);
 	tt_assert(ssize == EV_SSIZE_MIN);
+*/
 
 	ptr = &ssize;
 	iptr = (ev_intptr_t)ptr;
@@ -1119,7 +1121,7 @@ end:
 static void
 test_evutil_loadsyslib(void *arg)
 {
-	HANDLE h=NULL;
+	HMODULE h=NULL;
 
 	h = evutil_load_windows_system_library_(TEXT("kernel32.dll"));
 	tt_assert(h);
diff --git a/contrib/ntp/sntp/libevent/test/regress_zlib.c b/contrib/ntp/sntp/libevent/test/regress_zlib.c
index 9339397..8406676 100644
--- a/contrib/ntp/sntp/libevent/test/regress_zlib.c
+++ b/contrib/ntp/sntp/libevent/test/regress_zlib.c
@@ -56,6 +56,7 @@
 #include "event2/bufferevent.h"
 
 #include "regress.h"
+#include "mm-internal.h"
 
 /* zlib 1.2.4 and 1.2.5 do some "clever" things with macros.  Instead of
    saying "(defined(FOO) ? FOO : 0)" they like to say "FOO-0", on the theory
@@ -95,6 +96,7 @@ zlib_deflate_free(void *ctx)
 	z_streamp p = ctx;
 
 	assert(deflateEnd(p) == Z_OK);
+	mm_free(p);
 }
 
 static void
@@ -103,6 +105,7 @@ zlib_inflate_free(void *ctx)
 	z_streamp p = ctx;
 
 	assert(inflateEnd(p) == Z_OK);
+	mm_free(p);
 }
 
 static int
@@ -275,7 +278,7 @@ test_bufferevent_zlib(void *arg)
 {
 	struct bufferevent *bev1=NULL, *bev2=NULL;
 	char buffer[8333];
-	z_stream z_input, z_output;
+	z_stream *z_input, *z_output;
 	int i, r;
 	evutil_socket_t pair[2] = {-1, -1};
 	(void)arg;
@@ -293,18 +296,18 @@ test_bufferevent_zlib(void *arg)
 	bev1 = bufferevent_socket_new(NULL, pair[0], 0);
 	bev2 = bufferevent_socket_new(NULL, pair[1], 0);
 
-	memset(&z_output, 0, sizeof(z_output));
-	r = deflateInit(&z_output, Z_DEFAULT_COMPRESSION);
+	z_output = mm_calloc(sizeof(*z_output), 1);
+	r = deflateInit(z_output, Z_DEFAULT_COMPRESSION);
 	tt_int_op(r, ==, Z_OK);
-	memset(&z_input, 0, sizeof(z_input));
-	r = inflateInit(&z_input);
+	z_input = mm_calloc(sizeof(*z_input), 1);
+	r = inflateInit(z_input);
 	tt_int_op(r, ==, Z_OK);
 
 	/* initialize filters */
 	bev1 = bufferevent_filter_new(bev1, NULL, zlib_output_filter,
-	    BEV_OPT_CLOSE_ON_FREE, zlib_deflate_free, &z_output);
+	    BEV_OPT_CLOSE_ON_FREE, zlib_deflate_free, z_output);
 	bev2 = bufferevent_filter_new(bev2, zlib_input_filter,
-	    NULL, BEV_OPT_CLOSE_ON_FREE, zlib_inflate_free, &z_input);
+	    NULL, BEV_OPT_CLOSE_ON_FREE, zlib_inflate_free, z_input);
 	bufferevent_setcb(bev1, readcb, writecb, errorcb, NULL);
 	bufferevent_setcb(bev2, readcb, writecb, errorcb, NULL);
 
diff --git a/contrib/ntp/sntp/libevent/test/test-fdleak.c b/contrib/ntp/sntp/libevent/test/test-fdleak.c
index ee2432b..4c4eba2 100644
--- a/contrib/ntp/sntp/libevent/test/test-fdleak.c
+++ b/contrib/ntp/sntp/libevent/test/test-fdleak.c
@@ -57,7 +57,7 @@
 #endif
 
 /* Provide storage for the address, both for the server & the clients */
-static struct sockaddr_in sin;
+static struct sockaddr_in saddr;
 
 /* Number of sucessful requests so far */
 static int num_requests;
@@ -131,7 +131,7 @@ start_loop(void)
 
 	listener = evconnlistener_new_bind(base, listener_accept_cb, NULL,
 	    LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE,
-	    -1, (struct sockaddr *)&sin, sizeof(sin));
+	    -1, (struct sockaddr *)&saddr, sizeof(saddr));
 	if (listener == NULL) {
 		my_perror("Could not create listener!");
 		exit(1);
@@ -145,8 +145,8 @@ start_loop(void)
 		my_perror("getsockname()");
 		exit(1);
 	}
-	memcpy(&sin, &ss, sizeof(sin));
-	if (sin.sin_family != AF_INET) {
+	memcpy(&saddr, &ss, sizeof(saddr));
+	if (saddr.sin_family != AF_INET) {
 		puts("AF mismatch from getsockname().");
 		exit(1);
 	}
@@ -208,8 +208,8 @@ start_client(struct event_base *base)
                                                          BEV_OPT_CLOSE_ON_FREE);
 	bufferevent_setcb(bev, client_read_cb, NULL, client_event_cb, NULL);
 
-	if (bufferevent_socket_connect(bev, (struct sockaddr *)&sin,
-                                       sizeof(sin)) < 0) {
+	if (bufferevent_socket_connect(bev, (struct sockaddr *)&saddr,
+                                       sizeof(saddr)) < 0) {
 		my_perror("Could not connect!");
 		bufferevent_free(bev);
 		exit(2);
@@ -236,10 +236,10 @@ main(int argc, char **argv)
 #endif
 
 	/* Set up an address, used by both client & server. */
-	memset(&sin, 0, sizeof(sin));
-	sin.sin_family = AF_INET;
-	sin.sin_addr.s_addr = htonl(0x7f000001);
-	sin.sin_port = 0; /* Tell the implementation to pick a port. */
+	memset(&saddr, 0, sizeof(saddr));
+	saddr.sin_family = AF_INET;
+	saddr.sin_addr.s_addr = htonl(0x7f000001);
+	saddr.sin_port = 0; /* Tell the implementation to pick a port. */
 
 	start_loop();
 
diff --git a/contrib/ntp/sntp/libevent/test/test-ratelim.c b/contrib/ntp/sntp/libevent/test/test-ratelim.c
index 27649b8..17babfd 100644
--- a/contrib/ntp/sntp/libevent/test/test-ratelim.c
+++ b/contrib/ntp/sntp/libevent/test/test-ratelim.c
@@ -50,6 +50,7 @@
 #include "event2/listener.h"
 #include "event2/thread.h"
 
+static struct evutil_weakrand_state weakrand_state;
 
 static int cfg_verbose = 0;
 static int cfg_help = 0;
@@ -113,11 +114,7 @@ loud_writecb(struct bufferevent *bev, void *ctx)
 	struct client_state *cs = ctx;
 	struct evbuffer *output = bufferevent_get_output(bev);
 	char buf[1024];
-#ifdef _WIN32
-	int r = rand() % 256;
-#else
-	int r = random() % 256;
-#endif
+	int r = evutil_weakrand_(&weakrand_state);
 	memset(buf, r, sizeof(buf));
 	while (evbuffer_get_length(output) < 8192) {
 		evbuffer_add(output, buf, sizeof(buf));
@@ -223,7 +220,7 @@ check_bucket_levels_cb(evutil_socket_t fd, short events, void *arg)
 #undef B
 
 	total_n_bev_checks++;
-	if (total_n_bev_checks >= .8 * (cfg_duration / cfg_tick_msec) * cfg_n_connections) {
+	if (total_n_bev_checks >= .8 * ((double)cfg_duration / cfg_tick_msec) * cfg_n_connections) {
 		event_free(event_base_get_running_event(bufferevent_get_base(bev)));
 	}
 }
@@ -553,6 +550,8 @@ main(int argc, char **argv)
 	(void) WSAStartup(wVersionRequested, &wsaData);
 #endif
 
+	evutil_weakrand_seed_(&weakrand_state, 0);
+
 #ifndef _WIN32
 	if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 		return 1;
diff --git a/contrib/ntp/sntp/libevent/test/test-time.c b/contrib/ntp/sntp/libevent/test/test-time.c
index dcd6639..bcc7086 100644
--- a/contrib/ntp/sntp/libevent/test/test-time.c
+++ b/contrib/ntp/sntp/libevent/test/test-time.c
@@ -41,6 +41,7 @@
 #include "event2/event.h"
 #include "event2/event_compat.h"
 #include "event2/event_struct.h"
+#include "util-internal.h"
 
 int called = 0;
 
@@ -48,14 +49,12 @@ int called = 0;
 
 struct event *ev[NEVENT];
 
+struct evutil_weakrand_state weakrand_state;
+
 static int
 rand_int(int n)
 {
-#ifdef _WIN32
-	return (int)(rand() % n);
-#else
-	return (int)(random() % n);
-#endif
+	return evutil_weakrand_(&weakrand_state) % n;
 }
 
 static void
@@ -71,7 +70,7 @@ time_cb(evutil_socket_t fd, short event, void *arg)
 			j = rand_int(NEVENT);
 			tv.tv_sec = 0;
 			tv.tv_usec = rand_int(50000);
-			if (tv.tv_usec % 2)
+			if (tv.tv_usec % 2 || called < NEVENT)
 				evtimer_add(ev[j], &tv);
 			else
 				evtimer_del(ev[j]);
@@ -93,6 +92,8 @@ main(int argc, char **argv)
 	(void) WSAStartup(wVersionRequested, &wsaData);
 #endif
 
+	evutil_weakrand_seed_(&weakrand_state, 0);
+
 	/* Initalize the event library */
 	event_init();
 
@@ -108,6 +109,8 @@ main(int argc, char **argv)
 
 	event_dispatch();
 
+
+	printf("%d, %d\n", called, NEVENT);
 	return (called < NEVENT);
 }
 
diff --git a/contrib/ntp/sntp/libevent/test/tinytest.c b/contrib/ntp/sntp/libevent/test/tinytest.c
index 36b3a62..3a8e331 100644
--- a/contrib/ntp/sntp/libevent/test/tinytest.c
+++ b/contrib/ntp/sntp/libevent/test/tinytest.c
@@ -31,6 +31,8 @@
 #include <string.h>
 #include <assert.h>
 
+#ifndef NO_FORKING
+
 #ifdef _WIN32
 #include <windows.h>
 #else
@@ -48,6 +50,8 @@
 #endif
 #endif
 
+#endif /* !NO_FORKING */
+
 #ifndef __GNUC__
 #define __attribute__(x)
 #endif
@@ -111,6 +115,8 @@ testcase_run_bare_(const struct testcase_t *testcase)
 
 #define MAGIC_EXITCODE 42
 
+#ifndef NO_FORKING
+
 static enum outcome
 testcase_run_forked_(const struct testgroup_t *group,
 		     const struct testcase_t *testcase)
@@ -211,6 +217,8 @@ testcase_run_forked_(const struct testgroup_t *group,
 #endif
 }
 
+#endif /* !NO_FORKING */
+
 int
 testcase_run_one(const struct testgroup_t *group,
 		 const struct testcase_t *testcase)
@@ -234,9 +242,13 @@ testcase_run_one(const struct testgroup_t *group,
 		cur_test_name = testcase->name;
 	}
 
+#ifndef NO_FORKING
 	if ((testcase->flags & TT_FORK) && !(opt_forked||opt_nofork)) {
 		outcome = testcase_run_forked_(group, testcase);
 	} else {
+#else
+	{
+#endif
 		outcome = testcase_run_bare_(testcase);
 	}
 
@@ -411,7 +423,9 @@ tinytest_main(int c, const char **v, struct testgroup_t *groups)
 	if (!n)
 		tinytest_set_flag_(groups, "..", 1, TT_ENABLED_);
 
+#ifdef _IONBF
 	setvbuf(stdout, NULL, _IONBF, 0);
+#endif
 
 	++in_tinytest_main;
 	for (i=0; groups[i].prefix; ++i)
@@ -458,3 +472,22 @@ tinytest_set_test_skipped_(void)
 		cur_test_outcome = SKIP;
 }
 
+char *
+tinytest_format_hex_(const void *val_, unsigned long len)
+{
+	const unsigned char *val = val_;
+	char *result, *cp;
+	size_t i;
+
+	if (!val)
+		return strdup("null");
+	if (!(result = malloc(len*2+1)))
+		return strdup("<allocation failure>");
+	cp = result;
+	for (i=0;i<len;++i) {
+		*cp++ = "0123456789ABCDEF"[val[i] >> 4];
+		*cp++ = "0123456789ABCDEF"[val[i] & 0x0f];
+	}
+	*cp = 0;
+	return result;
+}
diff --git a/contrib/ntp/sntp/libevent/test/tinytest.h b/contrib/ntp/sntp/libevent/test/tinytest.h
index dff440e..ed07b26 100644
--- a/contrib/ntp/sntp/libevent/test/tinytest.h
+++ b/contrib/ntp/sntp/libevent/test/tinytest.h
@@ -81,6 +81,8 @@ int tinytest_get_verbosity_(void);
 /** Implementation: Set a flag on tests matching a name; returns number
  * of tests that matched. */
 int tinytest_set_flag_(struct testgroup_t *, const char *, int set, unsigned long);
+/** Implementation: Put a chunk of memory into hex. */
+char *tinytest_format_hex_(const void *, unsigned long);
 
 /** Set all tests in 'groups' matching the name 'named' to be skipped. */
 #define tinytest_skip(groups, named) \
diff --git a/contrib/ntp/sntp/libevent/test/tinytest_macros.h b/contrib/ntp/sntp/libevent/test/tinytest_macros.h
index 9ff69b1..c3728d1 100644
--- a/contrib/ntp/sntp/libevent/test/tinytest_macros.h
+++ b/contrib/ntp/sntp/libevent/test/tinytest_macros.h
@@ -113,8 +113,8 @@
 #define tt_assert_test_fmt_type(a,b,str_test,type,test,printf_type,printf_fmt, \
     setup_block,cleanup_block,die_on_fail)				\
 	TT_STMT_BEGIN							\
-	type val1_ = (type)(a);						\
-	type val2_ = (type)(b);						\
+	type val1_ = (a);						\
+	type val2_ = (b);						\
 	int tt_status_ = (test);					\
 	if (!tt_status_ || tinytest_get_verbosity_()>1)	{		\
 		printf_type print_;					\
@@ -144,6 +144,10 @@
 	tt_assert_test_fmt_type(a,b,str_test,type,test,type,fmt,	\
 	    {print_=value_;},{},die_on_fail)
 
+#define tt_assert_test_type_opt(a,b,str_test,type,test,fmt,die_on_fail)	\
+	tt_assert_test_fmt_type(a,b,str_test,type,test,type,fmt,	\
+            {print_=value_?value_:"<NULL>";},{},die_on_fail)
+
 /* Helper: assert that a op b, when cast to type.  Format the values with
  * printf format fmt on failure. */
 #define tt_assert_op_type(a,op,b,type,fmt)				\
@@ -159,12 +163,23 @@
 	    (val1_ op val2_),"%lu",TT_EXIT_TEST_FUNCTION)
 
 #define tt_ptr_op(a,op,b)						\
-	tt_assert_test_type(a,b,#a" "#op" "#b,void*,			\
+	tt_assert_test_type(a,b,#a" "#op" "#b,const void*,              \
 	    (val1_ op val2_),"%p",TT_EXIT_TEST_FUNCTION)
 
 #define tt_str_op(a,op,b)						\
-	tt_assert_test_type(a,b,#a" "#op" "#b,const char *,		\
-	    (strcmp(val1_,val2_) op 0),"<%s>",TT_EXIT_TEST_FUNCTION)
+	tt_assert_test_type_opt(a,b,#a" "#op" "#b,const char *,		\
+	    (val1_ && val2_ && strcmp(val1_,val2_) op 0),"<%s>",	\
+	    TT_EXIT_TEST_FUNCTION)
+
+#define tt_mem_op(expr1, op, expr2, len)                                \
+  tt_assert_test_fmt_type(expr1,expr2,#expr1" "#op" "#expr2,            \
+			  const void *,                                 \
+			  (val1_ && val2_ && memcmp(val1_, val2_, len) op 0), \
+			  char *, "%s",					\
+			  { print_ = tinytest_format_hex_(value_, (len)); }, \
+			  { if (print_) free(print_); },		\
+			  TT_EXIT_TEST_FUNCTION				\
+                          );
 
 #define tt_want_int_op(a,op,b)						\
 	tt_assert_test_type(a,b,#a" "#op" "#b,long,(val1_ op val2_),"%ld",(void)0)
@@ -174,7 +189,7 @@
 	    (val1_ op val2_),"%lu",(void)0)
 
 #define tt_want_ptr_op(a,op,b)						\
-	tt_assert_test_type(a,b,#a" "#op" "#b,void*,			\
+  tt_assert_test_type(a,b,#a" "#op" "#b,const void*,			\
 	    (val1_ op val2_),"%p",(void)0)
 
 #define tt_want_str_op(a,op,b)						\
diff --git a/contrib/ntp/sntp/libevent/time-internal.h b/contrib/ntp/sntp/libevent/time-internal.h
index daf20f4..2c584fa 100644
--- a/contrib/ntp/sntp/libevent/time-internal.h
+++ b/contrib/ntp/sntp/libevent/time-internal.h
@@ -86,9 +86,6 @@ struct evutil_monotonic_timer {
 	struct timeval last_time;
 };
 
-#define EV_MONOT_PRECISE  1
-#define EV_MONOT_FALLBACK 2
-
 int evutil_configure_monotonic_time_(struct evutil_monotonic_timer *mt,
     int flags);
 int evutil_gettime_monotonic_(struct evutil_monotonic_timer *mt, struct timeval *tv);
diff --git a/contrib/ntp/sntp/libevent/util-internal.h b/contrib/ntp/sntp/libevent/util-internal.h
index 5866dbc..4fdedea 100644
--- a/contrib/ntp/sntp/libevent/util-internal.h
+++ b/contrib/ntp/sntp/libevent/util-internal.h
@@ -392,7 +392,7 @@ void evutil_free_secure_rng_globals_(void);
 void evutil_free_globals_(void);
 
 #ifdef _WIN32
-HANDLE evutil_load_windows_system_library_(const TCHAR *library_name);
+HMODULE evutil_load_windows_system_library_(const TCHAR *library_name);
 #endif
 
 #ifndef EV_SIZE_FMT
diff --git a/contrib/ntp/sntp/libevent/whatsnew-2.1.txt b/contrib/ntp/sntp/libevent/whatsnew-2.1.txt
index c0ee7cf..0be54ae 100644
--- a/contrib/ntp/sntp/libevent/whatsnew-2.1.txt
+++ b/contrib/ntp/sntp/libevent/whatsnew-2.1.txt
@@ -41,7 +41,7 @@
 
   We don't try to do binary compatibility except within stable release
   series, so binaries linked against any version of Libevent 2.0 will
-  probably need to be recompiled against Libevent 2.1.3-alpha if you
+  probably need to be recompiled against Libevent 2.1.4-alpha if you
   want to use it.  It is probable that we'll break binary compatibility
   again before Libevent 2.1 is stable.
 
@@ -63,6 +63,9 @@
   surrounded with appropriate #ifdef lines to keep your IDE from getting
   upset.
 
+  There is now an alternative cmake-based build process; cmake users
+  should see the relevant sections in the README.
+
 
 1.2. New functions for events and the event loop
 
@@ -146,6 +149,19 @@
   that's a no-op in past versions of Libevent, and we don't want to
   break compatibility.)
 
+  You can use the new event_base_get_num_events() function to find the
+  number of events active or pending on an event_base. To find the
+  largest number of events that there have been since the last call, use
+  event_base_get_max_events().
+
+  You can now activate all the events waiting for a given fd or signal
+  using the event_base_active_by_fd() and event_base_active_by_signal()
+  APIs.
+
+  On backends that support it (currently epoll), there is now an
+  EV_CLOSED flag that programs can use to detect when a socket has
+  closed without having to read all the bytes until receiving an EOF.
+
 1.3. Event finalization
 
   [NOTE: This is an experimental feature in Libevent 2.1.3-alpha. Though
@@ -325,6 +341,13 @@
   You can find the priority at which a bufferevent runs with
   bufferevent_get_priority().
 
+  The function bufferevent_get_token_bucket_cfg() can retrieve the
+  rate-limit settings for a bufferevent; bufferevent_getwatermark() can
+  return a bufferevent's current watermark settings.
+
+  You can manually trigger a bufferevent's callbacks via
+  bufferevent_trigger() and bufferevent_trigger_event().
+
 1.7. New functions and features: evdns
 
   The previous evdns interface used an "open a test UDP socket" trick in
@@ -340,6 +363,9 @@
   flag, which tells the evdns_base that it should not prevent Libevent from
   exiting while it has no DNS requests in progress.
 
+  There is a new evdns_base_clear_host_addresses() function to remove
+  all the /etc/hosts addresses registered with an evdns instance.
+
 1.8. New functions and features: evconnlistener
 
   Libevent 2.1 adds the following evconnlistener flags:
@@ -392,6 +418,31 @@
   and actually reports the error code and lets you figure out which request
   failed.
 
+  You can navigate from an evhttp_connection back to its evhttp with the
+  new evhttp_connection_get_server() function.
+
+  You can override the default HTTP Content-Type with the new
+  evhttp_set_default_content_type() function
+
+  There's a new evhttp_connection_get_addr() API to return the peer
+  address of an evhttp_connection.
+
+  The new evhttp_send_reply_chunk_with_cb() is a variant of
+  evhttp_send_reply_chunk() with a callback to be invoked when the
+  chunk is sent.
+
+  The evhttp_request_set_header_cb() facility adds a callback to be
+  invoked while parsing headers.
+
+  The evhttp_request_set_on_complete_cb() facility adds a callback to be
+  invoked on request completion.
+
+1.10. New functions and features: evutil
+
+  There's a function "evutil_secure_rng_set_urandom_device_file()" that
+  you can use to override the default file that Libevent uses to seed
+  its (sort-of) secure RNG.
+
 2. Cross-platform performance improvements
 
 2.1. Better data structures
diff --git a/contrib/ntp/sntp/libopts/Makefile.in b/contrib/ntp/sntp/libopts/Makefile.in
index 3b107c7..feb2e0f 100644
--- a/contrib/ntp/sntp/libopts/Makefile.in
+++ b/contrib/ntp/sntp/libopts/Makefile.in
@@ -39,8 +39,6 @@ DIST_COMMON = README $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/libopts/m4/stdnoreturn.m4 \
-	$(top_srcdir)/libevent/m4/openldap-thread-check.m4 \
-	$(top_srcdir)/libevent/m4/openldap.m4 \
 	$(top_srcdir)/m4/hms_search_lib.m4 $(top_srcdir)/m4/libtool.m4 \
 	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
 	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
@@ -60,8 +58,10 @@ am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/m4/ntp_prog_cc.m4 $(top_srcdir)/m4/ntp_sntp.m4 \
 	$(top_srcdir)/m4/ntp_sysexits.m4 \
 	$(top_srcdir)/m4/ntp_ver_suffix.m4 \
-	$(top_srcdir)/m4/os_cflags.m4 $(top_srcdir)/m4/snprintf.m4 \
-	$(top_srcdir)/m4/version.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/openldap-thread-check.m4 \
+	$(top_srcdir)/m4/openldap.m4 $(top_srcdir)/m4/os_cflags.m4 \
+	$(top_srcdir)/m4/snprintf.m4 $(top_srcdir)/m4/version.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -303,6 +303,11 @@ TIMETRIM_DL = @TIMETRIM_DL@
 TIMETRIM_DS = @TIMETRIM_DS@
 TIMETRIM_MS = @TIMETRIM_MS@
 TIMETRIM_NI = @TIMETRIM_NI@
+UPDATE_LEAP_DB = @UPDATE_LEAP_DB@
+UPDATE_LEAP_DL = @UPDATE_LEAP_DL@
+UPDATE_LEAP_DS = @UPDATE_LEAP_DS@
+UPDATE_LEAP_MS = @UPDATE_LEAP_MS@
+UPDATE_LEAP_NI = @UPDATE_LEAP_NI@
 VERSION = @VERSION@
 VER_SUFFIX = @VER_SUFFIX@
 abs_builddir = @abs_builddir@
diff --git a/contrib/ntp/sntp/libopts/m4/libopts.m4 b/contrib/ntp/sntp/libopts/m4/libopts.m4
index 4a4ca18..352098b 100644
--- a/contrib/ntp/sntp/libopts/m4/libopts.m4
+++ b/contrib/ntp/sntp/libopts/m4/libopts.m4
@@ -216,7 +216,7 @@ AC_DEFUN([LIBOPTS_WITHLIB_REGEX],[
   LIBREGEX_LIBS=""
   AC_MSG_CHECKING([whether libregex functions properly])
   AC_CACHE_VAL([libopts_cv_with_libregex],[
-  AC_RUN_IFELSE([@%:@include <stdio.h>
+  AC_RUN_IFELSE([AC_LANG_SOURCE([@%:@include <stdio.h>
 @%:@include <stdlib.h>
 @%:@include <sys/types.h>
 @%:@include REGEX_HEADER
@@ -235,7 +235,7 @@ int main() {
     fputs( "error: regex -->.<-- did not match\n", stderr );
     return 1;
   }
-  return 0; }],
+  return 0; }])],
     [libopts_cv_with_libregex=yes], [libopts_cv_with_libregex=no],
     [libopts_cv_with_libregex=no]) # end of AC_RUN_IFELSE 
   ]) # end of AC_CACHE_VAL for libopts_cv_with_libregex
@@ -260,12 +260,12 @@ libopts_cv_with_libregex=no
 AC_DEFUN([LIBOPTS_RUN_PATHFIND],[
   AC_MSG_CHECKING([whether pathfind(3) works])
   AC_CACHE_VAL([libopts_cv_run_pathfind],[
-  AC_RUN_IFELSE([@%:@include <string.h>
+  AC_RUN_IFELSE([AC_LANG_SOURCE([@%:@include <string.h>
 @%:@include <stdlib.h>
 int main (int argc, char** argv) {
    char* pz = pathfind( getenv( "PATH" ), "sh", "x" );
    return (pz == 0) ? 1 : 0;
-}],
+}])],
     [libopts_cv_run_pathfind=yes],[libopts_cv_run_pathfind=no],[libopts_cv_run_pathfind=no]
   ) # end of RUN_IFELSE
   ]) # end of AC_CACHE_VAL for libopts_cv_run_pathfind
@@ -303,7 +303,7 @@ echo ${dzero}`
 AC_DEFUN([LIBOPTS_RUN_REALPATH],[
   AC_MSG_CHECKING([whether we have a functional realpath(3C)])
   AC_CACHE_VAL([libopts_cv_run_realpath],[
-  AC_RUN_IFELSE([@%:@include <limits.h>
+  AC_RUN_IFELSE([AC_LANG_SOURCE([@%:@include <limits.h>
 @%:@include <stdlib.h>
 int main (int argc, char** argv) {
 @%:@ifndef PATH_MAX
@@ -313,7 +313,7 @@ choke me!!
 @%:@endif
    char *pz = realpath(argv@<:@0@:>@, zPath);
    return (pz == zPath) ? 0 : 1;
-}],
+}])],
     [libopts_cv_run_realpath=yes],[libopts_cv_run_realpath=no],[libopts_cv_run_realpath=no]
   ) # end of RUN_IFELSE
   ]) # end of AC_CACHE_VAL for libopts_cv_run_realpath
@@ -330,7 +330,7 @@ choke me!!
 AC_DEFUN([LIBOPTS_RUN_STRFTIME],[
   AC_MSG_CHECKING([whether strftime() works])
   AC_CACHE_VAL([libopts_cv_run_strftime],[
-  AC_RUN_IFELSE([@%:@include <time.h>
+  AC_RUN_IFELSE([AC_LANG_SOURCE([@%:@include <time.h>
 @%:@include <string.h>
 char t_buf@<:@ 64 @:>@;
 int main() {
@@ -346,7 +346,7 @@ int main() {
   tm.tm_yday  = 239; /* days since January 1 @<:@0, 365@:>@ */
   tm.tm_isdst =  1;  /* flag for daylight savings time */
   strftime( t_buf, sizeof( t_buf ), "%A %b %d %j", &tm );
-  return (strcmp( t_buf, z ) != 0); }],
+  return (strcmp( t_buf, z ) != 0); }])],
     [libopts_cv_run_strftime=yes],[libopts_cv_run_strftime=no],[libopts_cv_run_strftime=no]
   ) # end of RUN_IFELSE
   ]) # end of AC_CACHE_VAL for libopts_cv_run_strftime
@@ -363,10 +363,10 @@ int main() {
 AC_DEFUN([LIBOPTS_RUN_FOPEN_BINARY],[
   AC_MSG_CHECKING([whether fopen accepts "b" mode])
   AC_CACHE_VAL([libopts_cv_run_fopen_binary],[
-  AC_RUN_IFELSE([@%:@include <stdio.h>
+  AC_RUN_IFELSE([AC_LANG_SOURCE([@%:@include <stdio.h>
 int main (int argc, char** argv) {
 FILE* fp = fopen("conftest.@S|@ac_ext", "rb");
-return (fp == NULL) ? 1 : fclose(fp); }],
+return (fp == NULL) ? 1 : fclose(fp); }])],
     [libopts_cv_run_fopen_binary=yes],[libopts_cv_run_fopen_binary=no],[libopts_cv_run_fopen_binary=no]
   ) # end of RUN_IFELSE
   ]) # end of AC_CACHE_VAL for libopts_cv_run_fopen_binary
@@ -386,10 +386,10 @@ return (fp == NULL) ? 1 : fclose(fp); }],
 AC_DEFUN([LIBOPTS_RUN_FOPEN_TEXT],[
   AC_MSG_CHECKING([whether fopen accepts "t" mode])
   AC_CACHE_VAL([libopts_cv_run_fopen_text],[
-  AC_RUN_IFELSE([@%:@include <stdio.h>
+  AC_RUN_IFELSE([AC_LANG_SOURCE([@%:@include <stdio.h>
 int main (int argc, char** argv) {
 FILE* fp = fopen("conftest.@S|@ac_ext", "rt");
-return (fp == NULL) ? 1 : fclose(fp); }],
+return (fp == NULL) ? 1 : fclose(fp); }])],
     [libopts_cv_run_fopen_text=yes],[libopts_cv_run_fopen_text=no],[libopts_cv_run_fopen_text=no]
   ) # end of RUN_IFELSE
   ]) # end of AC_CACHE_VAL for libopts_cv_run_fopen_text
diff --git a/contrib/ntp/sntp/loc/darwin b/contrib/ntp/sntp/loc/darwin
index c902860..37d2dca 100644
--- a/contrib/ntp/sntp/loc/darwin
+++ b/contrib/ntp/sntp/loc/darwin
@@ -12,3 +12,4 @@ ntpsweep,noinst,8
 ntptime,sbin,8
 ntptrace,sbin,8
 sntp,bin,8
+update-leap,sbin,8
diff --git a/contrib/ntp/sntp/loc/debian b/contrib/ntp/sntp/loc/debian
index 7bc895a..1242fdf 100644
--- a/contrib/ntp/sntp/loc/debian
+++ b/contrib/ntp/sntp/loc/debian
@@ -15,3 +15,4 @@ ntptrace,bin,1
 sntp,bin,1
 tickadj,sbin,8
 timetrim,sbin,8
+update-leap,sbin,8
diff --git a/contrib/ntp/sntp/loc/freebsd b/contrib/ntp/sntp/loc/freebsd
index 7759e31..587f998 100644
--- a/contrib/ntp/sntp/loc/freebsd
+++ b/contrib/ntp/sntp/loc/freebsd
@@ -12,3 +12,4 @@ ntptime,sbin,8
 ntpsweep,noinst,8
 ntptrace,sbin,8
 sntp,sbin,8
+update-leap,sbin,8
diff --git a/contrib/ntp/sntp/loc/legacy b/contrib/ntp/sntp/loc/legacy
index 46c63a2..5412971 100644
--- a/contrib/ntp/sntp/loc/legacy
+++ b/contrib/ntp/sntp/loc/legacy
@@ -15,3 +15,4 @@ ntptrace,bin,1
 sntp,bin,1
 tickadj,bin,1
 timetrim,bin,1
+update-leap,bin,1
diff --git a/contrib/ntp/sntp/loc/netbsd b/contrib/ntp/sntp/loc/netbsd
index fa79340..200de2b 100644
--- a/contrib/ntp/sntp/loc/netbsd
+++ b/contrib/ntp/sntp/loc/netbsd
@@ -12,3 +12,4 @@ ntpsweep,noinst,8
 ntptime,sbin,8
 ntptrace,sbin,8
 sntp,sbin,1
+update-leap,sbin,8
diff --git a/contrib/ntp/sntp/loc/solaris b/contrib/ntp/sntp/loc/solaris
index eca1438..a9b3853 100644
--- a/contrib/ntp/sntp/loc/solaris
+++ b/contrib/ntp/sntp/loc/solaris
@@ -14,3 +14,4 @@ ntptime,sbin,1m
 ntptrace,sbin,1m
 sntp,sbin,1m
 tickadj,sbin,1m
+update-leap,sbin,1m
diff --git a/contrib/ntp/sntp/m4/ax_c99_struct_init.m4 b/contrib/ntp/sntp/m4/ax_c99_struct_init.m4
new file mode 100644
index 0000000..44a2db3
--- /dev/null
+++ b/contrib/ntp/sntp/m4/ax_c99_struct_init.m4
@@ -0,0 +1,59 @@
+# ===========================================================================
+#       http://www.gnu.org/software/autoconf-archive/ax_c99_struct_init.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_C99_STRUCT_INIT
+#
+# DESCRIPTION
+#
+#   This macro defines MISSING_C99_STRUCT_INIT if the C compiler does not
+#   supports the C99 tagged structure initialization.
+#
+#   Given: struct foo_s {int i1; int i2; int i3;};
+#   one can write:
+#	#if !define(MISSING_C99_STRUCT_INIT)
+#	# define FOO_INIT(a, b, c) { .i1 = a, .i2 = b, .i3 = c }
+#	#else
+#	# define FOO_INIT(a, b, c) { a, b, c }
+#
+#	static struct foo_s foo[] = {
+#		FOO_INIT(1, 1, 1),
+#		FOO_INIT(2, 2, 2),
+#		FOO_INIT(0, 0, 0)
+#	};
+#
+# LICENSE
+#
+#   Copyright (c) 2015 Network Time Foundation
+#
+#   Author: Harlan Stenn <stenn@nwtime.org>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 1
+
+AC_DEFUN([AX_C99_STRUCT_INIT], [
+	AC_MSG_CHECKING([whether the compiler supports C99 structure initialization])
+	AC_REQUIRE([AC_PROG_CC_C99])
+
+	AC_LANG_PUSH([C])
+
+	dnl AC_LINK_IFELSE?
+	AC_COMPILE_IFELSE(
+		[AC_LANG_SOURCE([[
+			struct foo_s {int i1; int i2;};
+			int main() { struct foo_s foo[] = { { .i1 = 1, .i2 = 1 }, { .i1 = 2, .i2 = 2 }, { .i1 = 0, .i2 = 0 } }; }
+			]])],
+		AC_MSG_RESULT([yes]),
+		AC_MSG_RESULT([no])
+		AC_DEFINE([MISSING_C99_STRUCT_INIT], [1],
+			[Define to 1 if the compiler does not support C99's structure initialization.]),
+		)
+
+	AC_LANG_POP([C])
+	]);
diff --git a/contrib/ntp/sntp/m4/ntp_libntp.m4 b/contrib/ntp/sntp/m4/ntp_libntp.m4
index 8842c4a..3aa3dff 100644
--- a/contrib/ntp/sntp/m4/ntp_libntp.m4
+++ b/contrib/ntp/sntp/m4/ntp_libntp.m4
@@ -878,13 +878,13 @@ AC_CACHE_CHECK(
     [for SIGIO],
     [ntp_cv_hdr_def_sigio],
     [AC_PREPROC_IFELSE(
-	[
+	[AC_LANG_SOURCE([
 	    #include <signal.h>
 
 	    #ifndef SIGIO
 	    # error
 	    #endif
-	],
+	])],
 	[ntp_cv_hdr_def_sigio=yes],
 	[ntp_cv_hdr_def_sigio=no]
     )]
@@ -947,13 +947,13 @@ AC_CACHE_CHECK(
     [for SIGPOLL],
     [ntp_cv_hdr_def_sigpoll],
     [AC_PREPROC_IFELSE(
-	[
+	[AC_LANG_SOURCE([
 	    #include <signal.h>
 	    
 	    #ifndef SIGPOLL
 	    # error
 	    #endif
-	],
+	])],
 	[ntp_cv_hdr_def_sigpoll=yes],
 	[ntp_cv_hdr_def_sigpoll=no]
     )]
diff --git a/contrib/ntp/sntp/m4/ntp_locinfo.m4 b/contrib/ntp/sntp/m4/ntp_locinfo.m4
index f045ac2..6701ba0 100644
--- a/contrib/ntp/sntp/m4/ntp_locinfo.m4
+++ b/contrib/ntp/sntp/m4/ntp_locinfo.m4
@@ -124,6 +124,12 @@ AC_SUBST([TIMETRIM_DL])
 AC_SUBST([TIMETRIM_DS])
 AC_SUBST([TIMETRIM_MS])
 AC_SUBST([TIMETRIM_NI])
+AC_SUBST([UPDATE_LEAP_DB])
+AC_SUBST([UPDATE_LEAP_DL])
+AC_SUBST([UPDATE_LEAP_DS])
+AC_SUBST([UPDATE_LEAP_MS])
+AC_SUBST([UPDATE_LEAP_NI])
+AM_CONDITIONAL([INSTALL_UPDATE_LEAP], [test -z "$UPDATE_LEAP_NI" ])
 
 ])dnl
 dnl ======================================================================
diff --git a/contrib/ntp/sntp/libevent/m4/openldap-thread-check.m4 b/contrib/ntp/sntp/m4/openldap-thread-check.m4
index 33f9199..33f9199 100644
--- a/contrib/ntp/sntp/libevent/m4/openldap-thread-check.m4
+++ b/contrib/ntp/sntp/m4/openldap-thread-check.m4
diff --git a/contrib/ntp/sntp/libevent/m4/openldap.m4 b/contrib/ntp/sntp/m4/openldap.m4
index 49ffb87..49ffb87 100644
--- a/contrib/ntp/sntp/libevent/m4/openldap.m4
+++ b/contrib/ntp/sntp/m4/openldap.m4
diff --git a/contrib/ntp/sntp/m4/version.m4 b/contrib/ntp/sntp/m4/version.m4
index 06f9676..945d9cb 100644
--- a/contrib/ntp/sntp/m4/version.m4
+++ b/contrib/ntp/sntp/m4/version.m4
@@ -1 +1 @@
-m4_define([VERSION_NUMBER],[4.2.8p1])
+m4_define([VERSION_NUMBER],[4.2.8p2])
diff --git a/contrib/ntp/sntp/main.c b/contrib/ntp/sntp/main.c
index c271c8c..20e27f0 100644
--- a/contrib/ntp/sntp/main.c
+++ b/contrib/ntp/sntp/main.c
@@ -1161,6 +1161,7 @@ handle_pkt(
 	int		stratum;
 	char *		ref;
 	char *		ts_str;
+	char *		leaptxt;
 	double		offset;
 	double		precision;
 	double		synch_distance;
@@ -1256,9 +1257,28 @@ handle_pkt(
 			disptxt[0] = '\0';
 		}
 
-		msyslog(LOG_INFO, "%s %+.*f%s %s s%d%s", ts_str,
+		switch (PKT_LEAP(rpkt->li_vn_mode)) {
+		    case LEAP_NOWARNING:
+		    	leaptxt = "no-leap";
+			break;
+		    case LEAP_ADDSECOND:
+		    	leaptxt = "add-leap";
+			break;
+		    case LEAP_DELSECOND:
+		    	leaptxt = "del-leap";
+			break;
+		    case LEAP_NOTINSYNC:
+		    	leaptxt = "unsync";
+			break;
+		    default:
+		    	leaptxt = "LEAP-ERROR";
+			break;
+		}
+
+		msyslog(LOG_INFO, "%s %+.*f%s %s s%d %s%s", ts_str,
 			digits, offset, disptxt,
 			hostnameaddr(hostname, host), stratum,
+			leaptxt,
 			(time_adjusted)
 			    ? " [excess]"
 			    : "");
diff --git a/contrib/ntp/sntp/scripts/Makefile.in b/contrib/ntp/sntp/scripts/Makefile.in
index 26c3591..73025d0 100644
--- a/contrib/ntp/sntp/scripts/Makefile.in
+++ b/contrib/ntp/sntp/scripts/Makefile.in
@@ -38,8 +38,6 @@ DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/libopts/m4/stdnoreturn.m4 \
-	$(top_srcdir)/libevent/m4/openldap-thread-check.m4 \
-	$(top_srcdir)/libevent/m4/openldap.m4 \
 	$(top_srcdir)/m4/hms_search_lib.m4 $(top_srcdir)/m4/libtool.m4 \
 	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
 	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
@@ -59,8 +57,10 @@ am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/m4/ntp_prog_cc.m4 $(top_srcdir)/m4/ntp_sntp.m4 \
 	$(top_srcdir)/m4/ntp_sysexits.m4 \
 	$(top_srcdir)/m4/ntp_ver_suffix.m4 \
-	$(top_srcdir)/m4/os_cflags.m4 $(top_srcdir)/m4/snprintf.m4 \
-	$(top_srcdir)/m4/version.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/openldap-thread-check.m4 \
+	$(top_srcdir)/m4/openldap.m4 $(top_srcdir)/m4/os_cflags.m4 \
+	$(top_srcdir)/m4/snprintf.m4 $(top_srcdir)/m4/version.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -246,6 +246,11 @@ TIMETRIM_DL = @TIMETRIM_DL@
 TIMETRIM_DS = @TIMETRIM_DS@
 TIMETRIM_MS = @TIMETRIM_MS@
 TIMETRIM_NI = @TIMETRIM_NI@
+UPDATE_LEAP_DB = @UPDATE_LEAP_DB@
+UPDATE_LEAP_DL = @UPDATE_LEAP_DL@
+UPDATE_LEAP_DS = @UPDATE_LEAP_DS@
+UPDATE_LEAP_MS = @UPDATE_LEAP_MS@
+UPDATE_LEAP_NI = @UPDATE_LEAP_NI@
 VERSION = @VERSION@
 VER_SUFFIX = @VER_SUFFIX@
 abs_builddir = @abs_builddir@
diff --git a/contrib/ntp/sntp/sntp-opts.c b/contrib/ntp/sntp/sntp-opts.c
index a9e3645..ce28d65 100644
--- a/contrib/ntp/sntp/sntp-opts.c
+++ b/contrib/ntp/sntp/sntp-opts.c
@@ -1,7 +1,7 @@
 /*
  *  EDIT THIS FILE WITH CAUTION  (sntp-opts.c)
  *
- *  It has been AutoGen-ed  February  4, 2015 at 02:33:35 AM by AutoGen 5.18.5pre4
+ *  It has been AutoGen-ed  April  7, 2015 at 04:17:23 AM by AutoGen 5.18.5pre4
  *  From the definitions    sntp-opts.def
  *  and the template file   options
  *
@@ -70,7 +70,7 @@ extern FILE * option_usage_fp;
  *  static const strings for sntp options
  */
 static char const sntp_opt_strs[2549] =
-/*     0 */ "sntp 4.2.8p1\n"
+/*     0 */ "sntp 4.2.8p2\n"
             "Copyright (C) 1992-2015 The University of Delaware and Network Time Foundation, all rights reserved.\n"
             "This is free software. It is licensed for use, modification and\n"
             "redistribution under the terms of the NTP License, copies of which\n"
@@ -155,7 +155,7 @@ static char const sntp_opt_strs[2549] =
 /*  2298 */ "LOAD_OPTS\0"
 /*  2308 */ "no-load-opts\0"
 /*  2321 */ "SNTP\0"
-/*  2326 */ "sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p1\n"
+/*  2326 */ "sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p2\n"
             "Usage:  %s [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \\\n"
             "\t\t[ hostname-or-IP ...]\n\0"
 /*  2485 */ "$HOME\0"
@@ -163,7 +163,7 @@ static char const sntp_opt_strs[2549] =
 /*  2493 */ ".ntprc\0"
 /*  2500 */ "http://bugs.ntp.org, bugs@ntp.org\0"
 /*  2534 */ "\n\0"
-/*  2536 */ "sntp 4.2.8p1";
+/*  2536 */ "sntp 4.2.8p2";
 
 /**
  *  ipv4 option description with
@@ -1173,7 +1173,7 @@ static void bogus_function(void) {
      translate option names.
    */
   /* referenced via sntpOptions.pzCopyright */
-  puts(_("sntp 4.2.8p1\n\
+  puts(_("sntp 4.2.8p2\n\
 Copyright (C) 1992-2015 The University of Delaware and Network Time Foundation, all rights reserved.\n\
 This is free software. It is licensed for use, modification and\n\
 redistribution under the terms of the NTP License, copies of which\n\
@@ -1263,7 +1263,7 @@ implied warranty.\n"));
   puts(_("load options from a config file"));
 
   /* referenced via sntpOptions.pzUsageTitle */
-  puts(_("sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p1\n\
+  puts(_("sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p2\n\
 Usage:  %s [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \\\n\
 \t\t[ hostname-or-IP ...]\n"));
 
@@ -1271,7 +1271,7 @@ Usage:  %s [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \\\n\
   puts(_("\n"));
 
   /* referenced via sntpOptions.pzFullVersion */
-  puts(_("sntp 4.2.8p1"));
+  puts(_("sntp 4.2.8p2"));
 
   /* referenced via sntpOptions.pzFullUsage */
   puts(_("<<<NOT-FOUND>>>"));
diff --git a/contrib/ntp/sntp/sntp-opts.def b/contrib/ntp/sntp/sntp-opts.def
index c94d5e9..fcfeaaf 100644
--- a/contrib/ntp/sntp/sntp-opts.def
+++ b/contrib/ntp/sntp/sntp-opts.def
@@ -281,7 +281,8 @@ Otherwise, only the
 is displayed.
 Finally, the
 .Em stratum
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 	_END_PROG_MDOC_DESCRIP;
 };
 
diff --git a/contrib/ntp/sntp/sntp-opts.h b/contrib/ntp/sntp/sntp-opts.h
index d0407aa..8f1a5df 100644
--- a/contrib/ntp/sntp/sntp-opts.h
+++ b/contrib/ntp/sntp/sntp-opts.h
@@ -1,7 +1,7 @@
 /*
  *  EDIT THIS FILE WITH CAUTION  (sntp-opts.h)
  *
- *  It has been AutoGen-ed  February  4, 2015 at 02:33:34 AM by AutoGen 5.18.5pre4
+ *  It has been AutoGen-ed  April  7, 2015 at 04:17:22 AM by AutoGen 5.18.5pre4
  *  From the definitions    sntp-opts.def
  *  and the template file   options
  *
@@ -91,9 +91,9 @@ typedef enum {
 /** count of all options for sntp */
 #define OPTION_CT    23
 /** sntp version */
-#define SNTP_VERSION       "4.2.8p1"
+#define SNTP_VERSION       "4.2.8p2"
 /** Full sntp version text */
-#define SNTP_FULL_VERSION  "sntp 4.2.8p1"
+#define SNTP_FULL_VERSION  "sntp 4.2.8p2"
 
 /**
  *  Interface defines for all options.  Replace "n" with the UPPER_CASED
diff --git a/contrib/ntp/sntp/sntp.1sntpman b/contrib/ntp/sntp/sntp.1sntpman
index 36bdfbd..1b636e9 100644
--- a/contrib/ntp/sntp/sntp.1sntpman
+++ b/contrib/ntp/sntp/sntp.1sntpman
@@ -10,11 +10,11 @@
 .ds B-Font B
 .ds I-Font I
 .ds R-Font R
-.TH sntp 1sntpman "04 Feb 2015" "4.2.8p1" "User Commands"
+.TH sntp 1sntpman "07 Apr 2015" "4.2.8p2" "User Commands"
 .\"
-.\" EDIT THIS FILE WITH CAUTION (/tmp/.ag-apayaT/ag-zpaq_S)
+.\" EDIT THIS FILE WITH CAUTION (/tmp/.ag-E6aqmA/ag-76ailA)
 .\"
-.\" It has been AutoGen-ed February 4, 2015 at 02:34:13 AM by AutoGen 5.18.5pre4
+.\" It has been AutoGen-ed April 7, 2015 at 04:18:00 AM by AutoGen 5.18.5pre4
 .\" From the definitions sntp-opts.def
 .\" and the template file agman-cmd.tpl
 .SH NAME
@@ -72,7 +72,8 @@ Otherwise, only the
 is displayed.
 Finally, the
 \fIstratum\f[]
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 .SH "OPTIONS"
 .TP
 .NOP \f\*[B-Font]\-4\f[], \f\*[B-Font]\-\-ipv4\f[]
diff --git a/contrib/ntp/sntp/sntp.1sntpmdoc b/contrib/ntp/sntp/sntp.1sntpmdoc
index 26444f5..5a84a80 100644
--- a/contrib/ntp/sntp/sntp.1sntpmdoc
+++ b/contrib/ntp/sntp/sntp.1sntpmdoc
@@ -1,9 +1,9 @@
-.Dd February 4 2015
+.Dd April 7 2015
 .Dt SNTP 1sntpmdoc User Commands
 .Os
 .\"  EDIT THIS FILE WITH CAUTION  (sntp-opts.mdoc)
 .\"
-.\"  It has been AutoGen-ed  February  4, 2015 at 02:34:20 AM by AutoGen 5.18.5pre4
+.\"  It has been AutoGen-ed  April  7, 2015 at 04:18:06 AM by AutoGen 5.18.5pre4
 .\"  From the definitions    sntp-opts.def
 .\"  and the template file   agmdoc-cmd.tpl
 .Sh NAME
@@ -57,7 +57,8 @@ Otherwise, only the
 is displayed.
 Finally, the
 .Em stratum
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 .Sh "OPTIONS"
 .Bl -tag
 .It  Fl 4 , Fl \-ipv4 
diff --git a/contrib/ntp/sntp/sntp.html b/contrib/ntp/sntp/sntp.html
index cac641a..5b41a7f 100644
--- a/contrib/ntp/sntp/sntp.html
+++ b/contrib/ntp/sntp/sntp.html
@@ -36,7 +36,7 @@ display the time offset of the system clock relative to the server
 clock.  Run as root, it can correct the system clock to this offset as
 well.  It can be run as an interactive command or from a cron job.
 
-  <p>This document applies to version 4.2.8p1 of <code>sntp</code>.
+  <p>This document applies to version 4.2.8p2 of <code>sntp</code>.
 
   <p>The program implements the SNTP protocol as defined by RFC 5905, the NTPv4
 IETF specification.
@@ -127,7 +127,8 @@ Otherwise, only the
 is displayed. 
 Finally, the
 <em>stratum</em>
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 
   <p>This section was generated by <strong>AutoGen</strong>,
 using the <code>agtexi-cmd</code> template and the option descriptions for the <code>sntp</code> program. 
@@ -175,7 +176,7 @@ the usage text by passing it through a pager program.
 used to select the program, defaulting to <span class="file">more</span>.  Both will exit
 with a status code of 0.
 
-<pre class="example">sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p1
+<pre class="example">sntp - standard Simple Network Time Protocol client program - Ver. 4.2.8p2
 Usage:  sntp [ -&lt;flag&gt; [&lt;val&gt;] | --&lt;name&gt;[{=| }&lt;val&gt;] ]... \
                 [ hostname-or-IP ...]
   Flg Arg Option-Name    Description
diff --git a/contrib/ntp/sntp/sntp.man.in b/contrib/ntp/sntp/sntp.man.in
index 3a6f9c5..a1a3e07 100644
--- a/contrib/ntp/sntp/sntp.man.in
+++ b/contrib/ntp/sntp/sntp.man.in
@@ -10,11 +10,11 @@
 .ds B-Font B
 .ds I-Font I
 .ds R-Font R
-.TH sntp @SNTP_MS@ "04 Feb 2015" "4.2.8p1" "User Commands"
+.TH sntp @SNTP_MS@ "07 Apr 2015" "4.2.8p2" "User Commands"
 .\"
-.\" EDIT THIS FILE WITH CAUTION (/tmp/.ag-apayaT/ag-zpaq_S)
+.\" EDIT THIS FILE WITH CAUTION (/tmp/.ag-E6aqmA/ag-76ailA)
 .\"
-.\" It has been AutoGen-ed February 4, 2015 at 02:34:13 AM by AutoGen 5.18.5pre4
+.\" It has been AutoGen-ed April 7, 2015 at 04:18:00 AM by AutoGen 5.18.5pre4
 .\" From the definitions sntp-opts.def
 .\" and the template file agman-cmd.tpl
 .SH NAME
@@ -72,7 +72,8 @@ Otherwise, only the
 is displayed.
 Finally, the
 \fIstratum\f[]
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 .SH "OPTIONS"
 .TP
 .NOP \f\*[B-Font]\-4\f[], \f\*[B-Font]\-\-ipv4\f[]
diff --git a/contrib/ntp/sntp/sntp.mdoc.in b/contrib/ntp/sntp/sntp.mdoc.in
index 9b66208..31a4268 100644
--- a/contrib/ntp/sntp/sntp.mdoc.in
+++ b/contrib/ntp/sntp/sntp.mdoc.in
@@ -1,9 +1,9 @@
-.Dd February 4 2015
+.Dd April 7 2015
 .Dt SNTP @SNTP_MS@ User Commands
 .Os
 .\"  EDIT THIS FILE WITH CAUTION  (sntp-opts.mdoc)
 .\"
-.\"  It has been AutoGen-ed  February  4, 2015 at 02:34:20 AM by AutoGen 5.18.5pre4
+.\"  It has been AutoGen-ed  April  7, 2015 at 04:18:06 AM by AutoGen 5.18.5pre4
 .\"  From the definitions    sntp-opts.def
 .\"  and the template file   agmdoc-cmd.tpl
 .Sh NAME
@@ -57,7 +57,8 @@ Otherwise, only the
 is displayed.
 Finally, the
 .Em stratum
-of the host is reported.
+of the host is reported
+and the leap indicator is decoded and displayed.
 .Sh "OPTIONS"
 .Bl -tag
 .It  Fl 4 , Fl \-ipv4 
diff --git a/contrib/ntp/sntp/tests/Makefile.in b/contrib/ntp/sntp/tests/Makefile.in
index 73b78da..194af0f 100644
--- a/contrib/ntp/sntp/tests/Makefile.in
+++ b/contrib/ntp/sntp/tests/Makefile.in
@@ -44,8 +44,6 @@ subdir = tests
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/libopts/m4/stdnoreturn.m4 \
-	$(top_srcdir)/libevent/m4/openldap-thread-check.m4 \
-	$(top_srcdir)/libevent/m4/openldap.m4 \
 	$(top_srcdir)/m4/hms_search_lib.m4 $(top_srcdir)/m4/libtool.m4 \
 	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
 	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
@@ -65,8 +63,10 @@ am__aclocal_m4_deps = $(top_srcdir)/libopts/m4/libopts.m4 \
 	$(top_srcdir)/m4/ntp_prog_cc.m4 $(top_srcdir)/m4/ntp_sntp.m4 \
 	$(top_srcdir)/m4/ntp_sysexits.m4 \
 	$(top_srcdir)/m4/ntp_ver_suffix.m4 \
-	$(top_srcdir)/m4/os_cflags.m4 $(top_srcdir)/m4/snprintf.m4 \
-	$(top_srcdir)/m4/version.m4 $(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/openldap-thread-check.m4 \
+	$(top_srcdir)/m4/openldap.m4 $(top_srcdir)/m4/os_cflags.m4 \
+	$(top_srcdir)/m4/snprintf.m4 $(top_srcdir)/m4/version.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(install_sh) -d
@@ -295,6 +295,11 @@ TIMETRIM_DL = @TIMETRIM_DL@
 TIMETRIM_DS = @TIMETRIM_DS@
 TIMETRIM_MS = @TIMETRIM_MS@
 TIMETRIM_NI = @TIMETRIM_NI@
+UPDATE_LEAP_DB = @UPDATE_LEAP_DB@
+UPDATE_LEAP_DL = @UPDATE_LEAP_DL@
+UPDATE_LEAP_DS = @UPDATE_LEAP_DS@
+UPDATE_LEAP_MS = @UPDATE_LEAP_MS@
+UPDATE_LEAP_NI = @UPDATE_LEAP_NI@
 VERSION = @VERSION@
 VER_SUFFIX = @VER_SUFFIX@
 abs_builddir = @abs_builddir@