path: root/contrib/cvs/configure.in

dnl configure.in for cvs
AC_INIT([Concurrent Versions System (CVS)],[1.11.5],[bug-cvs@gnu.org],[cvs])
AC_CONFIG_SRCDIR(src/cvs.h)
AM_INIT_AUTOMAKE([gnu 1.5 dist-bzip2 no-define])
AC_PREREQ(2.53)

AC_PREFIX_PROGRAM(cvs)
AM_CONFIG_HEADER(config.h)

AC_PROG_CC
AM_PROG_CC_C_O

dnl FIXME the next three calls should be avoided according to autoconf
dnl philosophy.  for example, AC_CHECK_LIB should be used to look for crypt.
dnl
dnl These are here instead of later because they want to be called before
dnl anything that calls a C compiler.
AC_AIX
AC_MINIX

# Find the posix library needed on INTERACTIVE UNIX (ISC)
dnl
dnl From the Autoconf 2.53 manual (AC_ISC_POSIX):
dnl
dnl  For INTERACTIVE UNIX (ISC), add `-lcposix' to output variable
dnl  `LIBS' if necessary for POSIX facilities.  Call this after
dnl  `AC_PROG_CC' and before any other macros that use POSIX
dnl  interfaces.  INTERACTIVE UNIX is no longer sold, and Sun says that
dnl  they will drop support for it on 2006-07-23, so this macro is
dnl  becoming obsolescent.
dnl
AC_SEARCH_LIBS([strerror], [cposix])

dnl
dnl Autoconf stopped setting $ISC sometime before 2.53
dnl
dnl If this is still important, someone should come up with a generic test
dnl for whether _SYSV3 needs to be defined.  Removed code below:
dnl
dnl if test "$ISC" = yes; then
dnl CFLAGS="$CFLAGS -D_SYSV3"
dnl # And I don't like this...  In theory it should be found later if server is
dnl # enabled, but maybe something on INTERACTIVE UNIX (ISC) we didn't ask to
dnl # link with crypt tries?  Anyhow, the autoconf manual says we can delete
dnl # this ISC stuff on or after 2006-07-23 when Sun discontinues support and
dnl # ISC becomes obsolescent, but I suppose that is probably a matter of
dnl # opinion.
dnl #
dnl # N.B.  The reason for doing this is that some moron decided to put a stub
dnl # for crypt in libc that always returns NULL.  Without this here, the later
dnl # check will find the stub instead of the real thing, resulting in a server
dnl # that can't process crypted passwords correctly.
dnl
dnl # again, if we have to try and reenable this for ISC, someone should come
dnl # up with a generic test that figures out whether crypt is good or not -
dnl # Is it always returning NULL?
dnl LIBS="-lcrypt $LIBS"
dnl fi
dnl
dnl FIXME - This has been broken for at least a few months anyhow, so I'm
dnl removing the crypt lib define above, but the correct fix would be to
dnl provide a CRYPT_WORKS macro or the like that gets called sometime after
dnl the AC_SEARCH_LIBS call that normally finds crypt, and if crypt doesn't
dnl work, the macro should be retried with LIBS="-lcrypt $LIBS" forced.
dnl

AC_PROG_RANLIB
AC_PROG_YACC
AC_PROG_LN_S
AC_EXEEXT

AC_PATH_PROG(PERL, perl, no)
AC_PATH_PROG(CSH, csh, no)
AC_PATH_PROG(PR, pr, no)
# For diff/util.c
if test x"$PR" != xno; then
	AC_DEFINE_UNQUOTED([PR_PROGRAM], ["$PR"], [Path to the pr utility])
fi

dnl FIXME This is truly gross.
missing_dir=`cd $ac_aux_dir && pwd`
dnl FIXME I pulled this default list from sanity.sh.  Perhaps these lists
dnl can be stored in one location?
dnl
dnl Yeah, put the value in a variable add it to the substitution list
dnl then have configure create sanity.sh from sanity.sh.in...
glocs="$PATH:/usr/local/bin:/usr/contrib/bin:/usr/gnu/bin:/local/bin:/local/gnu/bin:/gnu/bin"
AC_PATH_PROGS(ROFF, groff roff, $missing_dir/missing roff, $glocs)
AC_PATH_PROG(PS2PDF, ps2pdf, $missing_dir/missing ps2pdf)
AC_PATH_PROG(TEXI2DVI, texi2dvi, $missing_dir/missing texi2dvi)

AC_SYS_INTERPRETER
if test X"$ac_cv_sys_interpreter" != X"yes" ; then
  # silly trick to avoid problems in AC macros...
  ac_msg='perl scripts using #! may not be invoked properly'
  AC_MSG_WARN($ac_msg)
fi

# BSD's logo is a devil for a reason, hey?
AC_CACHE_CHECK(for BSD VPATH bug in make, ccvs_cv_bsd_make_vpath_bug,
[if test ! -d ac_test_dir ; then
	AC_TRY_COMMAND([mkdir ac_test_dir])
fi
cat >conftestmake <<EOF
VPATH = ac_test_dir
ac_test_target: ac_test_dep
	echo BSD VPATH bug present >&2
ac_test_dep: ac_test_dep_dep
EOF
touch ac_test_dir/ac_test_dep_dep
touch ac_test_dir/ac_test_dep
touch ac_test_target
# Don't know why, but the following test doesn't work under FreeBSD 4.2
# without this sleep command
sleep 1
if AC_TRY_COMMAND([make -f conftestmake 2>&1 >/dev/null |grep ^BSD\ VPATH\ bug\ present\$ >/dev/null]) ; then
	ccvs_cv_bsd_make_vpath_bug=yes
else
	ccvs_cv_bsd_make_vpath_bug=no
fi
AC_TRY_COMMAND([rm -rf ac_test_dir ac_test_target conftestmake])])
# We also don't need to worry about the bug when $srcdir = $builddir
AM_CONDITIONAL(MAKE_TARGETS_IN_VPATH, \
		test $ccvs_cv_bsd_make_vpath_bug = no \
		|| test $srcdir = .)

AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(\
	errno.h \
	direct.h \
	fcntl.h \
	fnmatch.h \
	io.h \
	limits.h \
	memory.h \
	ndbm.h \
	string.h \
	syslog.h \
	sys/bsdtypes.h \
	sys/file.h \
	sys/param.h \
	sys/resource.h \
	sys/select.h \
	sys/time.h \
	sys/timeb.h \
	unistd.h \
	utime.h\
)
AC_HEADER_STAT
AC_HEADER_TIME

AC_C_CONST
AC_TYPE_UID_T
AC_TYPE_MODE_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SIGNAL

AC_CHECK_MEMBERS([struct stat.st_blksize])
AC_CHECK_MEMBERS([struct stat.st_rdev])

AC_REPLACE_FUNCS(\
	dup2 \
	ftruncate \
	gethostname \
	memmove \
	mkdir \
	rename \
	strerror \
	strstr \
	strtoul\
	valloc \
	waitpid \
)
AC_CHECK_FUNCS(\
	fchdir \
	fchmod \
	fsync \
	ftime \
	geteuid \
	getgroups \
	getopt \
	getpagesize \
	getpassphrase \
	gettimeofday \
	initgroups \
	login \
	logout \
	mknod \
	mkstemp \
	mktemp \
	putenv \
	readlink \
	regcomp \
	regerror \
	regexec \
	regfree \
	sigaction \
	sigblock \
	sigprocmask \
	sigsetmask \
	sigvec \
	tempnam \
	timezone \
	tzset \
	vprintf \
	wait3 \
)
# we only need one of the following
AC_CHECK_FUNCS([\
	nanosleep \
	usleep \
	select \
], [break])

dnl
dnl The CVS coding standard (as specified in HACKING) is that if it exists
dnl in SunOS4 and ANSI, we use it.  CVS itself, of course, therefore doesn't
dnl need HAVE_* defines for such functions, but diff wants them.
dnl
AC_DEFINE(HAVE_STRCHR, 1,
[Define if you have strchr (always for CVS).])
AC_DEFINE(HAVE_MEMCHR, 1,
[Define if you have memchr (always for CVS).])

dnl
dnl Force lib/regex.c to use malloc instead of messing around with alloca
dnl and define the old re_comp routines that we use.
dnl
AC_DEFINE(REGEX_MALLOC, 1,
[Define to force lib/regex.c to use malloc instead of alloca.])
AC_DEFINE(_REGEX_RE_COMP, 1,
[Define to force lib/regex.c to define re_comp et al.])
dnl
dnl AC_FUNC_FORK([]) is rather baroque.  It seems to be rather more picky
dnl than, say, the Single Unix Specification (version 2), which simplifies
dnl a lot of cases by saying that the child process can't set any variables
dnl (thus avoiding problems with register allocation) or call any functions
dnl (thus avoiding problems with whether file descriptors are shared).
dnl It would be nice if we could just write to the Single Unix Specification.
dnl I think the only way to do redirection this way is by doing it in the
dnl parent, and then undoing it afterwards (analogous to windows-NT/run.c).
dnl That would appear to have a race condition if the user hits ^C (or
dnl some other signal) at the wrong time, as main_cleanup will try to use
dnl stdout/stderr.  So maybe we are stuck with AC_FUNC_FORK([]).
dnl
AC_FUNC_FORK([])
AC_FUNC_CLOSEDIR_VOID

dnl
dnl Check for shadow password support.
dnl
dnl We used to try to determine whether shadow passwords were actually in
dnl use or not, but the code has been changed to work right reguardless,
dnl so we can go back to a simple check.
AC_SEARCH_LIBS(getspnam, sec gen, AC_DEFINE(HAVE_GETSPNAM, 1,
[Define if you have the getspnam function.]))

AC_FUNC_UTIME_NULL
AC_SYS_LONG_FILE_NAMES

AC_FUNC_FNMATCH
if test "$ac_cv_func_fnmatch_works" = no; then
  AC_LIBOBJ(fnmatch)
  AC_CONFIG_LINKS(lib/fnmatch.h:lib/fnmatch.h.in)
  AC_LIBSOURCE(fnmatch.h.in)
fi

dnl for the buffer routine replacements
AC_FUNC_MMAP

# Try to find connect and gethostbyname.
AC_CHECK_LIB(nsl, main)
AC_SEARCH_LIBS(connect, xnet socket inet,
  AC_DEFINE(HAVE_CONNECT, 1,
[Define if you have the connect function.]))
dnl no need to search nsl for gethostbyname here since we should have
dnl just added libnsl above if we found it.
AC_SEARCH_LIBS(gethostbyname, netinet)


dnl
dnl begin --with-*
dnl

dnl
dnl set $(KRB4) from --with-krb4=value -- WITH_KRB4
dnl
dnl If you change this, keep in mind that some systems have a bogus
dnl libkrb in the system libraries, so --with-krb4=value needs to
dnl override the system -lkrb.
dnl
KRB4=/usr/kerberos
define(WITH_KRB4,[
AC_ARG_WITH(
  [krb4],
  AC_HELP_STRING(
    [--with-krb4],
    [Kerberos 4 directory (default /usr/kerberos)]),
  [KRB4=$with_krb4],
)dnl
AC_MSG_CHECKING([for KRB4 in $KRB4])
AC_MSG_RESULT([])
AC_SUBST(KRB4)])dnl
WITH_KRB4

krb_h=
AC_MSG_CHECKING([for krb.h])
if test "$cross_compiling" != yes && test -r $KRB4/include/krb.h; then
   hold_cflags=$CFLAGS
   CFLAGS="$CFLAGS -I$KRB4/include"
   AC_TRY_LINK([#include <krb.h>],[int i;],
          [krb_h=yes krb_incdir=$KRB4/include],
          [CFLAGS=$hold_cflags
           AC_TRY_LINK([#include <krb.h>],[int i;],
             [krb_h=yes krb_incdir=])])
   CFLAGS=$hold_cflags
else
   AC_TRY_LINK([#include <krb.h>],[int i;],
             [krb_h=yes krb_incdir=])
fi
if test -z "$krb_h"; then
  AC_TRY_LINK([#include <krb.h>],[int i;],
    [krb_h=yes krb_incdir=],
    [if test "$cross_compiling" != yes && test -r $KRB4/include/kerberosIV/krb.h; then
       hold_cflags=$CFLAGS
       CFLAGS="$CFLAGS -I$KRB4/include/kerberosIV"
       AC_TRY_LINK([#include <krb.h>],[int i;],
	 [krb_h=yes krb_incdir=$KRB4/include/kerberosIV])
       CFLAGS=$hold_cflags
     fi])
fi
AC_MSG_RESULT($krb_h)

includeopt=
AC_SUBST(includeopt)
if test -n "$krb_h"; then
  krb_lib=
  if test "$cross_compiling" != yes && test -r $KRB4/lib/libkrb.a; then
       hold_ldflags=$LDFLAGS
       LDFLAGS="-L${KRB4}/lib $LDFLAGS"
       AC_CHECK_LIB(krb,printf,[krb_lib=yes krb_libdir=${KRB4}/lib],
           [LDFLAGS=$hold_ldflags
            # Using open here instead of printf so we don't
            # get confused by the cached value for printf from above.
            AC_CHECK_LIB(krb,open,[krb_lib=yes krb_libdir=])])
       LDFLAGS=$hold_ldflags
  else
       AC_CHECK_LIB(krb,printf,[krb_lib=yes krb_libdir=])
  fi
  if test -n "$krb_lib"; then
    AC_DEFINE([HAVE_KERBEROS], 1,
	      [Define if you have MIT Kerberos version 4 available.])
    test -n "${krb_libdir}" && LIBS="${LIBS} -L${krb_libdir}"
    LIBS="${LIBS} -lkrb"
    # Put -L${krb_libdir} in LDFLAGS temporarily so that it appears before
    # -ldes in the command line.  Don't do it permanently so that we honor
    # the user's setting for LDFLAGS
    hold_ldflags=$LDFLAGS
    test -n "${krb_libdir}" && LDFLAGS="$LDFLAGS -L${krb_libdir}"
    AC_CHECK_LIB(des,printf,[LIBS="${LIBS} -ldes"])
    LDFLAGS=$hold_ldflags
    if test -n "$krb_incdir"; then
      includeopt="${includeopt} -I$krb_incdir"
    fi
  fi
fi
AC_CHECK_FUNCS(krb_get_err_text)


dnl
dnl WITH_GSSAPI is external
dnl
dnl TODO - I tried to put these in alphabetical order, but ACX_WITH_GSSAPI
dnl fails unless called after the KRB4 stuff.  I don't know why.
dnl
ACX_WITH_GSSAPI


dnl
dnl begin --with-editor
dnl
dnl Set the default editor to use for log messages
dnl

AC_ARG_VAR(
  [EDITOR],
  [The text editor CVS will use by default for log messages.])

# Let the confiscator request a specific editor
AC_ARG_WITH(
  [editor],
  AC_HELP_STRING(
    [--with-editor],
    [The default text editor CVS should use for log messages
     (default autoselects)]), ,
  [with_editor="vi emacs pico edit"])


if echo $with_editor |grep ^/ >/dev/null; then
  # If $with_editor is an absolute path, issue a warning if the executable
  # doesn't exist or isn't usable, but then trust the user and use it
  # regardless
  EDITOR=$with_editor
  AC_MSG_CHECKING([for an editor])
  AC_MSG_RESULT([$EDITOR])
  if ! test -f $with_editor \
      || ! test -x $with_editor; then
    # warn the user that they may encounter problems
    AC_MSG_WARN([$with_editor is not a path to an executable file])
  fi
elif test no != "${with_editor}"; then
  # Search for an editor
  AC_CHECK_PROGS([EDITOR], [$with_editor])
else
  AC_MSG_CHECKING([for an editor])
  AC_MSG_RESULT([no])
fi

if test -n "${EDITOR}"; then
  dnl FIXME - Using --without-editor will probably break a compile at
  dnl the moment, but maybe it is reasonable for someone to want to
  dnl compile a CVS executable that refuses to run if no $EDITOR,
  dnl $CVS_EDITOR, or -e option is specified?  Making a preliminary
  dnl design decision in this direction, subject to discussion.
  AC_DEFINE_UNQUOTED(
    [EDITOR_DFLT], ["$EDITOR"],
    [The default editor to use, if one does not specify the "-e" option
     to cvs, or does not have an EDITOR environment variable.  If this
     is not set to an absolute path to an executable, use the shell to
     find where the editor actually is.  This allows sites with
     /usr/bin/vi or /usr/ucb/vi to work equally well (assuming that their
     PATH is reasonable).])
fi

dnl
dnl done finding an editor
dnl
dnl end --with-editor
dnl


dnl
dnl Find a temporary directory
dnl
AC_ARG_WITH(
  [tmpdir],
  AC_HELP_STRING(
    [--with-tmpdir],
    [The temporary directory CVS should use as a default
     (default autoselects)]))

AC_MSG_CHECKING([for temporary directory])
if test -z "$with_tmpdir" || test yes = "$with_tmpdir"; then
  for with_tmpdir in "$TMPDIR" "$TMP" "$TEMP" /tmp /var/tmp no; do
    if test -d "$with_tmpdir" && test -x "$with_tmpdir" \
        && test -w "$with_tmpdir" && test -r "$with_tmpdir"; then
      break
    fi
  done
  if test no = "$with_tmpdir"; then
    AC_MSG_WARN([Failed to find usable temporary directory.  Using '/tmp'.])
    with_tmpdir=/tmp
  fi
  AC_MSG_RESULT([$with_tmpdir])
elif ! echo "$with_tmpdir" |grep '^[[\\/]]'; then
  AC_MSG_RESULT([$with_tmpdir])
  AC_MSG_ERROR([--with-tmpdir requires an absolute path.])
elif ! test -d "$with_tmpdir" || ! test -x "$with_tmpdir" \
        || ! test -w "$with_tmpdir" || ! test -r "$with_tmpdir"; then
  AC_MSG_RESULT([$with_tmpdir])
  AC_MSG_WARN(
    [User supplied temporary directory ('$with_tmpdir') does not
     exist or lacks sufficient permissions for read/write.])
fi

AC_DEFINE_UNQUOTED(
  [TMPDIR_DFLT], ["$with_tmpdir"],
  [Directory used for storing temporary files, if not overridden by
   environment variables or the -T global option.  There should be little
   need to change this (-T is a better mechanism if you need to use a
   different directory for temporary files).])

dnl
dnl done finding tmpdir
dnl


dnl
dnl Get default umask
dnl

AC_ARG_WITH(
  [umask],
  AC_HELP_STRING(
    [--with-umask],
    [Set the umask CVS will use by default in the repository (default 002)]))

if test -z "$with_umask" || test yes = "$with_umask"; then
  with_umask=002
elif test no = "$with_umask"; then
  with_umask=000
fi

AC_DEFINE_UNQUOTED(
  [UMASK_DFLT], [$with_umask],
  [The default umask to use when creating or otherwise setting file or
   directory permissions in the repository.  Must be a value in the
   range of 0 through 0777.  For example, a value of 002 allows group
   rwx access and world rx access; a value of 007 allows group rwx
   access but no world access.  This value is overridden by the value
   of the CVSUMASK environment variable, which is interpreted as an
   octal number.])

dnl
dnl Done setting default umask
dnl

dnl
dnl Set CVS Administrator Group
dnl
AC_ARG_WITH(
  [cvs-admin-group],
  AC_HELP_STRING(
    [--with-cvs-admin-group=GROUP],
    [The CVS admin command is restricted to the members of this group.
     If this group does not exist, all users are allowed to run CVS admin.
     To disable the CVS admin command for all users, create an empty group
     by specifying the --with-cvs-admin-group= option.  To disable access
     control for CVS admin, run configure with the --without-cvs-admin-group
     option. (default 'cvsadmin')]), ,
  [with_cvs_admin_group=cvsadmin])

if test yes = "$with_cvs_admin_group"; then
  with_cvs_admin_group=cvsadmin
fi
if test no != "$with_cvs_admin_group"; then
  dnl FIXME We should warn if the group doesn't exist
  AC_DEFINE_UNQUOTED(
    [CVS_ADMIN_GROUP], ["$with_cvs_admin_group"],
    [The CVS admin command is restricted to the members of the group
     CVS_ADMIN_GROUP.  If this group does not exist, all users are
     allowed to run CVS admin.  To disable the CVS admin command for
     all users, create an empty CVS_ADMIN_GROUP by running configure
     with the --with-cvs-admin-group= option.  To disable access control
     for CVS admin, run configure with the --without-cvs-admin-group
     option in order to comment out the define below.])
fi

dnl
dnl Done setting CVS Administrator Group
dnl

dnl
dnl Set the NDBM library to use.
dnl
dnl XXX - FIXME - FIXME - FIXME - XXX
dnl
dnl This is very bad.  It should really autodetect an appropriate NDBM library
dnl and, if it doesn't find one, decide to use MY_NDBM.  I'm am defining
dnl this here since this is no worse than it worked when it was in options.h
dnl and I am cleaning out options.h so that the Windows version of CVS will
dnl compile properly for the next release.
dnl
dnl That's why this option is in the --with-* section rather than the
dnl --enable-* section.
dnl
dnl XXX - FIXME - FIXME - FIXME - XXX
dnl
AC_ARG_ENABLE(
  [cvs-ndbm],
  AC_HELP_STRING(
    [--enable-cvs-ndbm],
    [Use the NDBM library distributed with CVS rather than attempting to use
     a system NDBM library.  Disabling this may not work.  (default)]), ,
  [enable_cvs_ndbm=yes])
if test no != "$enable_cvs_ndbm"; then
  AC_DEFINE(
    [MY_NDBM], [1],
    [By default, CVS stores its modules and other such items in flat
     text files (MY_NDBM enables this).  Turning off MY_NDBM causes CVS
     to look for a system-supplied ndbm database library and use it
     instead.  That may speed things up, but the default setting
     generally works fine too.])
fi

dnl
dnl Done selecting NDBM library.
dnl



dnl
dnl end --with-*
dnl


dnl
dnl begin --enables
dnl


# Check for options requesting client and server feature. If none are
# given and we have connect(), we want the full client & server arrangement.
AC_ARG_ENABLE(
  [client],
  AC_HELP_STRING(
    [--enable-client],
    [Include code for running as a remote client (default)]), ,
  [if test "$ac_cv_search_connect" != no; then
    enable_client=yes
  fi])
if test no != "$enable_client"; then
  AC_DEFINE(
    [CLIENT_SUPPORT], [1],
    [Define if you want CVS to be able to be a remote repository client.])
fi

AC_ARG_ENABLE(
  [password-authenticated-client],
  AC_HELP_STRING(
    [--enable-password-authenticated-client],
    [Enable pserver as a remote access method in the CVS client
     (default)]))

if test no != "$enable_password_authenticated_client"; then
  if test no != "$enable_client"; then
    AC_DEFINE(
      [AUTH_CLIENT_SUPPORT], [1],
      [Enable AUTH_CLIENT_SUPPORT to enable pserver as a remote access
       method in the CVS client (default)])
  else
    AC_MSG_WARN(
      [--enable-password-authenticated-server is meaningless with
       the CVS client disabled (--disable-client)])
  fi
fi


dnl
dnl Give the confiscator control over whether the server code is compiled
dnl
AC_ARG_ENABLE(
  [server],
  AC_HELP_STRING(
    [--enable-server],
    [Include code for running as a server (default)]), ,
  [if test "$ac_cv_search_connect" != no; then
     enable_server=yes
   fi])

if test no != "$enable_server"; then
  AC_DEFINE(
    [SERVER_SUPPORT], [1],
    [Define if you want CVS to be able to serve repositories to remote
     clients.])

  dnl
  dnl The auth server needs to be able to check passwords against passwd
  dnl file entries, so we only #define AUTH_SERVER_SUPPORT if we can
  dnl find the crypt function. 
  dnl
  AC_SEARCH_LIBS(
    [crypt], [crypt],
    [AC_DEFINE(
       [HAVE_CRYPT], [1],
       [Define if you have the crypt function.])
     AC_DEFINE(
       [AUTH_SERVER_SUPPORT], [1],
       [Define if you want to use the password authenticated server.])dnl
  ])dnl AC_SEARCH_LIBS

  dnl
  dnl Allow the configurer to enable server flowcontrol.  Read the help
  dnl strings below for a full explanation.
  dnl
  AC_ARG_ENABLE(
    [server-flow-control],
    AC_HELP_STRING(
      [--enable-server-flow-control],
      [If you are working with a large remote repository and a 'cvs
       checkout' is swamping your network and memory, define these to
       enable flow control.  You may optionally pass a low water mark
       in bytes and a high water mark in bytes, separated by commas.
       (default is enabled 1M,2M)]),
    [if test yes = $enable_server_flow_control; then
       enable_server_flow_control=1M,2M
     fi],
    [enable_server_flow_control=1M,2M])
  if test no != $enable_server_flow_control; then
    ccvs_lwm=`expr "$enable_server_flow_control" : '\(.*\),'`
    ccvs_hwm=`expr "$enable_server_flow_control" : '.*,\(.*\)'`
    ccvs_lwm_E=`expr "$ccvs_lwm" : '[[0-9]][[0-9]]*\(.*\)'`
    ccvs_lwm=`expr "$ccvs_lwm" : '\([[0-9]][[0-9]]*\)'`
    test "" != "$ccvs_lwm" || ccvs_lwm_E="?"
    case $ccvs_lwm_E in
        G) ccvs_lwm="$ccvs_lwm * 1024 * 1024 * 1024";;
        M) ccvs_lwm="$ccvs_lwm * 1024 * 1024";;
        k) ccvs_lwm="$ccvs_lwm * 1024";;
        b | '') ;;
        *) AC_MSG_ERROR([Can't parse argument to --enable-server-flow-control
                        ('$enable_server_flow_control') as <lwm>,<hwm>])
      esac
    ccvs_hwm_E=`expr "$ccvs_hwm" : '[[0-9]][[0-9]]*\(.*\)'`
    ccvs_hwm=`expr "$ccvs_hwm" : '\([[0-9]][[0-9]]*\).*'`
    test "" != "$ccvs_hwm" || ccvs_hwm_E="?"
    case $ccvs_hwm_E in
        G) ccvs_hwm="$ccvs_hwm * 1024 * 1024 * 1024";;
        M) ccvs_hwm="$ccvs_hwm * 1024 * 1024";;
        k) ccvs_hwm="$ccvs_hwm * 1024";;
        b | '') ccvs_hwm="$ccvs_hwm";;
        *) AC_MSG_ERROR([Can't parse argument to --enable-server-flow-control
                        ('$enable_server_flow_control') as <lwm>,<hwm>])
      esac

    AC_DEFINE(
      [SERVER_FLOWCONTROL], [1],
      [If you are working with a large remote repository and a 'cvs
       checkout' is swamping your network and memory, define these to
       enable flow control.  You will end up with even less probability of
       a consistent checkout (see Concurrency in cvs.texinfo), but CVS
       doesn't try to guarantee that anyway.  The master server process
       will monitor how far it is getting behind, if it reaches the high
       water mark, it will signal the child process to stop generating
       data when convenient (ie: no locks are held, currently at the
       beginning of a new directory).  Once the buffer has drained
       sufficiently to reach the low water mark, it will be signalled to
       start again.])
    AC_DEFINE_UNQUOTED(
      [SERVER_LO_WATER], [($ccvs_lwm)],
      [The low water mark in bytes for server flow control.  Required if
       SERVER_FLOWCONTROL is defined, and useless otherwise.])
    AC_DEFINE_UNQUOTED(
      [SERVER_HI_WATER], [($ccvs_hwm)],
      [The high water mark in bytes for server flow control.  Required if
       SERVER_FLOWCONTROL is defined, and useless otherwise.])
  fi # enable_server_flow_control
fi # enable_server


dnl
dnl Use --enable-encryption to turn on encryption support, but ignore this
dnl option unless either client or server is enabled.
dnl
AC_ARG_ENABLE(
  [encryption],
  AC_HELP_STRING(
    [--enable-encryption],
    [Enable encryption support (disabled by default)]), ,
  [enable_encryption=no])
if test "$enable_encryption" = yes; then
  if test no != "$with_client" || test no != "$with_server"; then
    AC_DEFINE(
      [ENCRYPTION], [1],
      [Define to enable encryption support.])
  else
    AC_MSG_WARN(
      [--enable-encryption is meaningless with neither the CVS client
       nor the CVS server is enabled (--disable-client and --disable-server).])
  fi
fi

dnl
dnl end --enable-encryption
dnl


dnl
dnl begin --enable-force-editor
dnl

AC_ARG_ENABLE(
  [force-editor],
  AC_HELP_STRING(
    [--enable-force-editor],
    [When committing or importing files, you must enter a log message.
     Normally, you can do this either via the -m flag on the command
     line, the -F flag on the command line, or an editor will be started
     for you.  If you like to use logging templates (the rcsinfo file
     within the $CVSROOT/CVSROOT directory), you might want to force
     people to use the editor even if they specify a message with -m or
     -F.  --enable-force-editor will cause the -m or -F message to be
     appended to the temp file when the editor is started. (disabled
     by default)]), ,
  [enable_force_editor=no])

if test yes = "$enable_force_editor"; then
  AC_DEFINE(
    [FORCE_USE_EDITOR], [1],
    [When committing or importing files, you must enter a log message.
    Normally, you can do this either via the -m flag on the command
    line, the -F flag on the command line, or an editor will be started
    for you.  If you like to use logging templates (the rcsinfo file
    within the $CVSROOT/CVSROOT directory), you might want to force
    people to use the editor even if they specify a message with -m or
    -F.  Enabling FORCE_USE_EDITOR will cause the -m or -F message to be
    appended to the temp file when the editor is started.])
fi

dnl
dnl end --enable-force-editor
dnl


dnl
dnl begin --enable-rootcommit
dnl

dnl
dnl I don't like this here, but I don't really like options.h, either.
dnl Besides, this is causing some problems currently when compiling under
dnl Windows and moving it here should avoid the issue (the wrong options.h
dnl is being used).
dnl
dnl I don't like making this a runtime option either.  I think I just don't
dnl like making it easy to get to, but putting it here goes along with the
dnl Autoconf ideal.
dnl
AC_ARG_ENABLE(
  [rootcommit],
  AC_HELP_STRING(
    [--enable-rootcommit],
    [Allow the root user to commit files (disabled by default)]), ,
  [enable_rootcommit=no])
if test "$enable_rootcommit" = no; then
  AC_DEFINE(
    [CVS_BADROOT], [1],
    [When committing a permanent change, CVS and RCS make a log entry of
     who committed the change.  If you are committing the change logged
     in as "root" (not under "su" or other root-priv giving program),
     CVS/RCS cannot determine who is actually making the change.

     As such, by default, CVS prohibits changes committed by users
     logged in as "root".  You can disable checking by passing the
     "--enable-rootcommit" option to configure or by commenting out the
     lines below.])
fi

dnl
dnl end --enable-rootcommit
dnl



dnl
dnl end --enable-*
dnl


dnl For the moment we will assume that all systems which have
dnl the unixyness to run configure are unixy enough to do the
dnl PreservePermissions stuff.  I have this sinking feeling that
dnl things won't be that simple, before long.
dnl AC_DEFINE(PRESERVE_PERMISSIONS_SUPPORT, 1,
dnl [Define if this system supports chown(), link(), and friends.])

dnl On cygwin32, we configure like a Unix system, but we use the
dnl Windows support code in lib/fncase.c to handle the case
dnl insensitive file system.  We also need some support libraries.  We
dnl do this at the end so that the new libraries are added at the end
dnl of LIBS.
dnl
dnl FIXME: We should be trying to meet the autoconf ideal of checking for
dnl the properties of the system rather than the name of the os here.  In other
dnl words, we should check the case sensitivty of the system and then for
dnl the support functions we are using and which library we find them in.
AC_CACHE_CHECK(for cygwin32, ccvs_cv_sys_cygwin32,
[AC_TRY_COMPILE([], [return __CYGWIN32__;],
ccvs_cv_sys_cygwin32=yes, ccvs_cv_sys_cygwin32=no)])
if test $ccvs_cv_sys_cygwin32 = yes; then
  AC_LIBOBJ(fncase)
  LIBS="$LIBS -ladvapi32"

  dnl On Windows you can only change file times if you can write to
  dnl the file.  cygwin32 should really handle this for us, but as of
  dnl January 1998 it doesn't.
  AC_DEFINE(UTIME_EXPECTS_WRITABLE, 1,
[Define if utime requires write access to the file (true on Windows,
but not Unix).])

  dnl On Windows we must use setmode to change between binary and text
  dnl mode.  This probably doesn't really require two macro definitions
  AC_DEFINE(USE_SETMODE_STDOUT, 1,
[Define if setmode is required when writing binary data to stdout.])
  AC_DEFINE(HAVE_SETMODE, 1,
[Define if the diff library should use setmode for binary files.])
fi

dnl associate the setting of the execute bit with the individual scripts
AC_CONFIG_FILES(contrib/check_cvs, [chmod +x contrib/check_cvs])
AC_CONFIG_FILES(contrib/clmerge, [chmod +x contrib/clmerge])
AC_CONFIG_FILES(contrib/cln_hist, [chmod +x contrib/cln_hist])
AC_CONFIG_FILES(contrib/commit_prep, [chmod +x contrib/commit_prep])
AC_CONFIG_FILES(contrib/cvs_acls, [chmod +x contrib/cvs_acls])
AC_CONFIG_FILES(contrib/log, [chmod +x contrib/log])
AC_CONFIG_FILES(contrib/log_accum, [chmod +x contrib/log_accum])
AC_CONFIG_FILES(contrib/mfpipe, [chmod +x contrib/mfpipe])
AC_CONFIG_FILES(contrib/pvcs2rcs, [chmod +x contrib/pvcs2rcs])
AC_CONFIG_FILES(contrib/rcslock, [chmod +x contrib/rcslock])
AC_CONFIG_FILES(contrib/sccs2rcs, [chmod +x contrib/sccs2rcs])
AC_CONFIG_FILES(src/cvsbug, [chmod +x src/cvsbug])

dnl the bulk files
AC_CONFIG_FILES([Makefile \
	  contrib/Makefile \
	  cvs.spec \
	  diff/Makefile \
	  doc/Makefile \
	  emx/Makefile \
	  lib/Makefile \
	  man/Makefile \
	  os2/Makefile \
	  src/Makefile \
	  tools/Makefile \
	  vms/Makefile \
	  windows-NT/Makefile \
	  windows-NT/SCC/Makefile \
	  zlib/Makefile])

dnl and we're done
AC_OUTPUT