Initial import of Perl5. The king is dead; long live the king!

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diff --git a/contrib/perl5/hints/solaris_2.sh b/contrib/perl5/hints/solaris_2.sh
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+# hints/solaris_2.sh
+# Last modified:  Wed May 27 13:04:45 EDT 1998
+# Andy Dougherty  <doughera@lafcol.lafayette.edu>
+# Based on input from lots of folks, especially
+# Dean Roehrich <roehrich@ironwood-fddi.cray.com>
+
+# If perl fails tests that involve dynamic loading of extensions, and
+# you are using gcc, be sure that you are NOT using GNU as and ld.  One
+# way to do that is to invoke Configure with
+# 
+#     sh Configure -Dcc='gcc -B/usr/ccs/bin/'
+# 
+ 
+# See man vfork.
+usevfork=false
+
+d_suidsafe=define
+
+# Avoid all libraries in /usr/ucblib.
+set `echo $glibpth | sed -e 's@/usr/ucblib@@'`
+glibpth="$*"
+
+# Remove bad libraries.  -lucb contains incompatible routines.
+# -lld doesn't do anything useful.
+# -lmalloc can cause a problem with GNU CC & Solaris.  Specifically,
+# libmalloc.a may allocate memory that is only 4 byte aligned, but
+# GNU CC on the Sparc assumes that doubles are 8 byte aligned.
+# Thanks to  Hallvard B. Furuseth <h.b.furuseth@usit.uio.no>
+set `echo " $libswanted " | sed -e 's@ ld @ @' -e 's@ malloc @ @' -e 's@ ucb @ @'`
+libswanted="$*"
+
+# Look for architecture name.  We want to suggest a useful default.
+case "$archname" in
+'')
+    if test -f /usr/bin/arch; then
+        archname=`/usr/bin/arch`
+    	archname="${archname}-${osname}"
+    elif test -f /usr/ucb/arch; then
+        archname=`/usr/ucb/arch`
+    	archname="${archname}-${osname}"
+    fi
+    ;;
+esac
+
+######################################################
+# General sanity testing.  See below for excerpts from the Solaris FAQ.
+
+# From roehrich@ironwood-fddi.cray.com Wed Sep 27 12:51:46 1995
+# Date: Thu, 7 Sep 1995 16:31:40 -0500
+# From: Dean Roehrich <roehrich@ironwood-fddi.cray.com>
+# To: perl5-porters@africa.nicoh.com
+# Subject: Re: On perl5/solaris/gcc
+
+# Here's another draft of the perl5/solaris/gcc sanity-checker. 
+
+case `type ${cc:-cc}` in
+*/usr/ucb/cc*) cat <<END >&4
+
+NOTE:  Some people have reported problems with /usr/ucb/cc.  
+If you have difficulties, please make sure the directory
+containing your C compiler is before /usr/ucb in your PATH.
+
+END
+;;
+esac
+
+
+# Check that /dev/fd is mounted.  If it is not mounted, let the
+# user know that suid scripts may not work.
+/usr/bin/df /dev/fd 2>&1 > /dev/null
+case $? in
+0) ;;
+*)
+	cat <<END >&4
+
+NOTE: Your system does not have /dev/fd mounted.  If you want to
+be able to use set-uid scripts you must ask your system administrator
+to mount /dev/fd.
+
+END
+	;;
+esac
+
+
+# See if libucb can be found in /usr/lib.  If it is, warn the user
+# that this may cause problems while building Perl extensions.
+/usr/bin/ls /usr/lib/libucb* >/dev/null 2>&1
+case $? in
+0)
+	cat <<END >&4
+
+NOTE: libucb has been found in /usr/lib.  libucb should reside in
+/usr/ucblib.  You may have trouble while building Perl extensions.
+
+END
+;;
+esac
+
+# Use shell built-in 'type' command instead of /usr/bin/which to
+# avoid possible csh start-up problems and also to use the same shell
+# we'll be using to Configure and make perl.
+# The path name is the last field in the output, but the type command
+# has an annoying array of possible outputs, e.g.:
+#	make is hashed (/opt/gnu/bin/make)
+# 	cc is /usr/ucb/cc
+#	foo not found
+# use a command like type make | awk '{print $NF}' | sed 's/[()]//g'
+
+# See if make(1) is GNU make(1).
+# If it is, make sure the setgid bit is not set.
+make -v > make.vers 2>&1
+if grep GNU make.vers > /dev/null 2>&1; then
+    tmp=`type make | awk '{print $NF}' | sed 's/[()]//g'`
+    case "`/usr/bin/ls -lL $tmp`" in
+    ??????s*)
+	    cat <<END >&2
+	
+NOTE: Your PATH points to GNU make, and your GNU make has the set-group-id
+bit set.  You must either rearrange your PATH to put /usr/ccs/bin before the
+GNU utilities or you must ask your system administrator to disable the
+set-group-id bit on GNU make.
+
+END
+	    ;;
+    esac
+fi
+rm -f make.vers
+
+# XXX EXPERIMENTAL  A.D.  2/27/1998
+# XXX This script UU/cc.cbu will get 'called-back' by Configure after it
+# XXX has prompted the user for the C compiler to use.
+cat > UU/cc.cbu <<'EOSH'
+# If the C compiler is gcc:
+#   - check the fixed-includes
+#   - check as(1) and ld(1), they should not be GNU
+#	(GNU as and ld 2.8.1 and later are reportedly ok, however.)
+# If the C compiler is not gcc:
+#   - check as(1) and ld(1), they should not be GNU
+#	(GNU as and ld 2.8.1 and later are reportedly ok, however.)
+#
+# Watch out in case they have not set $cc.
+
+# Get gcc to share its secrets.
+echo 'main() { return 0; }' > try.c
+	# Indent to avoid propagation to config.sh
+	verbose=`${cc:-cc} -v -o try try.c 2>&1`
+
+if echo "$verbose" | grep '^Reading specs from' >/dev/null 2>&1; then
+	#
+	# Using gcc.
+	#
+	#echo Using gcc
+
+	tmp=`echo "$verbose" | grep '^Reading' |
+		awk '{print $NF}'  | sed 's/specs$/include/'`
+
+	# Determine if the fixed-includes look like they'll work.
+	# Doesn't work anymore for gcc-2.7.2.
+
+	# See if as(1) is GNU as(1).  GNU as(1) won't work for this job.
+	if echo "$verbose" | grep ' /usr/ccs/bin/as ' >/dev/null 2>&1; then
+	    :
+	else
+	    cat <<END >&2
+
+NOTE: You are using GNU as(1).  GNU as(1) will not build Perl.
+I'm arranging to use /usr/ccs/bin/as by including -B/usr/ccs/bin/
+in your ${cc:-cc} command.  (Note that the trailing "/" is required.)
+
+END
+	    cc="${cc:-cc} -B/usr/ccs/bin/"
+	fi
+
+	# See if ld(1) is GNU ld(1).  GNU ld(1) won't work for this job.
+	# Recompute $verbose since we may have just changed $cc.
+	verbose=`${cc:-cc} -v -o try try.c 2>&1 | grep ld 2>&1`
+	if echo "$verbose" | grep ' /usr/ccs/bin/ld ' >/dev/null 2>&1; then
+	    :
+	else
+        # It's not /usr/ccs/bin/ld - but it might be egcs's ld wrapper,
+        # which calls /usr/ccs/bin/ld in turn. Passing -V to it will
+        # make it show its true colors.
+
+	    myld=`echo $verbose| grep ld | awk '/\/ld/ {print $1}'`
+            # This assumes that gcc's output will not change, and that
+            # /full/path/to/ld will be the first word of the output.
+
+            # all Solaris versions of ld I've seen contain the magic
+            # string used in the grep below.
+            if $myld -V 2>&1 | grep "ld: Software Generation Utilities" >/dev/null 2>&1; then
+                cat <<END >&2
+
+Aha. You're using egcs and /usr/ccs/bin/ld.
+
+END
+
+            else
+	    cat <<END >&2
+
+NOTE: You are using GNU ld(1).  GNU ld(1) will not build Perl.
+I'm arranging to use /usr/ccs/bin/ld by including -B/usr/ccs/bin/
+in your ${cc:-cc} command.  (Note that the trailing "/" is required.)
+
+END
+	    cc="${cc:-cc} -B/usr/ccs/bin/"
+            fi
+	fi
+
+else
+	#
+	# Not using gcc.
+	#
+	#echo Not using gcc
+
+	# See if as(1) is GNU as(1).  GNU as(1) won't work for this job.
+	case `as --version < /dev/null 2>&1` in
+	*GNU*)
+		cat <<END >&2
+
+NOTE: You are using GNU as(1).  GNU as(1) will not build Perl.
+You must arrange to use /usr/ccs/bin/as, perhaps by adding /usr/ccs/bin
+to the beginning of your PATH.
+
+END
+		;;
+	esac
+
+	# See if ld(1) is GNU ld(1).  GNU ld(1) won't work for this job.
+	# ld --version doesn't properly report itself as a GNU tool,
+	# as of ld version 2.6, so we need to be more strict. TWP 9/5/96
+	gnu_ld=false
+	case `ld --version < /dev/null 2>&1` in
+	*GNU*|ld\ version\ 2*)
+		gnu_ld=true ;;
+	*) ;;
+	esac
+	if $gnu_ld ; then :
+	else
+		# Try to guess from path
+		case `type ld | awk '{print $NF}'` in
+		*gnu*|*GNU*|*FSF*)
+			gnu_ld=true ;;
+		esac
+	fi
+	if $gnu_ld ; then
+		cat <<END >&2
+
+NOTE: You are apparently using GNU ld(1).  GNU ld(1) will not build Perl.
+You must arrange to use /usr/ccs/bin/ld, perhaps by adding /usr/ccs/bin
+to the beginning of your PATH.
+
+END
+	fi
+
+fi
+
+# as --version or ld --version might dump core.
+rm -f try try.c
+rm -f core
+
+# XXX
+EOSH
+
+if [ "X$usethreads" = "X$define" ]; then
+    ccflags="-D_REENTRANT $ccflags"
+    # -lpthread needs to come before -lc but after other libraries such
+    # as -lgdbm and such like. We assume here that -lc is present in
+    # libswanted. If that fails to be true in future, then this can be
+    # changed to add pthread to the very end of libswanted.
+    # sched_yield is in -lposix4
+    set `echo X "$libswanted "| sed -e 's/ c / posix4 pthread c /'`
+    shift
+    libswanted="$*"
+
+    # On Solaris 2.6 x86 there is a bug with sigsetjmp() and siglongjmp()
+    # when linked with the threads library, such that whatever positive value
+    # you pass to siglongjmp(), sigsetjmp() returns 1.
+    # Thanks to Simon Parsons <S.Parsons@ftel.co.uk> for this report.
+    # Sun BugID is 4117946, "sigsetjmp always returns 1 when called by
+    # siglongjmp in a MT program". As of 19980622, there is no patch
+    # available.
+    cat >try.c <<'EOM'
+	/* Test for sig(set|long)jmp bug. */
+	#include <setjmp.h>
+	 
+	main()
+	{
+	    sigjmp_buf env;
+	    int ret;
+	
+	    ret = sigsetjmp(env, 1);
+	    if (ret) { return ret == 2; }
+	    siglongjmp(env, 2);
+	}
+EOM
+    if test "`arch`" = i86pc -a "$osvers" = 2.6 \
+    && ${cc:-cc} try.c -lpthread >/dev/null 2>&1 && ./a.out; then
+	d_sigsetjmp=$undef
+	cat << 'EOM' >&2
+
+You will see a *** WHOA THERE!!! ***  message from Configure for
+d_sigsetjmp.  Keep the recommended value.  See hints/solaris_2.sh
+for more information.
+
+EOM
+    fi
+fi
+
+# This is just a trick to include some useful notes.
+cat > /dev/null <<'End_of_Solaris_Notes'
+
+Here are some notes kindly contributed by Dean Roehrich.
+
+-----
+Generic notes about building Perl5 on Solaris:
+- Use /usr/ccs/bin/make.
+- If you use GNU make, remove its setgid bit.
+- Remove all instances of *ucb* from your path.
+- Make sure libucb is not in /usr/lib (it should be in /usr/ucblib).
+- Do not use GNU as or GNU ld, or any of GNU binutils or GNU libc.
+- Do not use /usr/ucb/cc.
+- Do not change Configure's default answers, except for the path names.
+- Do not use -lmalloc.
+- Do not build on SunOS 4 and expect it to work properly on SunOS 5.
+- /dev/fd must be mounted if you want set-uid scripts to work.
+
+
+Here are the gcc-related questions and answers from the Solaris 2 FAQ.  Note
+the themes:
+	- run fixincludes
+	- run fixincludes correctly
+	- don't use GNU as or GNU ld
+
+Question 5.7 covers the __builtin_va_alist problem people are always seeing.
+Question 6.1.3 covers the GNU as and GNU ld issues which are always biting
+people.
+Question 6.9 is for those who are still trying to compile Perl4.
+
+The latest Solaris 2 FAQ can be found in the following locations:
+	rtfm.mit.edu:/pub/usenet-by-group/comp.sys.sun.admin
+	ftp.fwi.uva.nl:/pub/solaris
+
+Perl5 comes with a script in the top-level directory called "myconfig" which
+will print a summary of the configuration in your config.sh.  My summary for
+Solaris 2.4 and gcc 2.6.3 follows.  I have also built with gcc 2.7.0 and the
+results are identical.  This configuration was generated with Configure's -d
+option (take all defaults, don't bother prompting me).  All tests pass for
+Perl5.001, patch.1m.
+
+Summary of my perl5 (patchlevel 1) configuration:
+  Platform:
+    osname=solaris, osver=2.4, archname=sun4-solaris
+    uname='sunos poplar 5.4 generic_101945-27 sun4d sparc '
+    hint=recommended
+  Compiler:
+    cc='gcc', optimize='-O', ld='gcc'
+    cppflags=''
+    ccflags =''
+    ldflags =''
+    stdchar='unsigned char', d_stdstdio=define, usevfork=false
+    voidflags=15, castflags=0, d_casti32=define, d_castneg=define
+    intsize=4, alignbytes=8, usemymalloc=y, randbits=15
+  Libraries:
+    so=so
+    libpth=/lib /usr/lib /usr/ccs/lib /usr/local/lib
+    libs=-lsocket -lnsl -ldl -lm -lc -lcrypt
+    libc=/usr/lib/libc.so
+  Dynamic Linking:
+    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef
+    cccdlflags='-fpic', ccdlflags=' ', lddlflags='-G'
+
+
+Dean
+roehrich@cray.com
+9/7/95
+
+-----------
+
+From: Casper.Dik@Holland.Sun.COM (Casper H.S. Dik - Network Security Engineer)
+Subject: Solaris 2 Frequently Asked Questions (FAQ) 1.48
+Date: 25 Jul 1995 12:20:18 GMT
+
+5.7) Why do I get __builtin_va_alist or __builtin_va_arg_incr undefined?
+
+    You're using gcc without properly installing the gcc fixed
+    include files.  Or you ran fixincludes after installing gcc
+    w/o moving the gcc supplied varargs.h and stdarg.h files
+    out of the way and moving them back again later.  This often
+    happens when people install gcc from a binary distribution.
+    If there's a tmp directory in gcc's include directory, fixincludes
+    didn't complete.  You should have run "just-fixinc" instead.
+
+    Another possible cause is using ``gcc -I/usr/include.''
+
+6.1) Where is the C compiler or where can I get one?
+
+    [...]
+
+    3) Gcc.
+
+    Gcc is available from the GNU archives in source and binary
+    form.  Look in a directory called sparc-sun-solaris2 for
+    binaries.  You need gcc 2.3.3 or later.  You should not use
+    GNU as or GNU ld.  Make sure you run just-fixinc if you use
+    a binary distribution.  Better is to get a binary version and
+    use that to bootstrap gcc from source.
+
+    [...]
+
+    When you install gcc, don't make the mistake of installing
+    GNU binutils or GNU libc, they are not as capable as their
+    counterparts you get with Solaris 2.x.
+
+6.9) I can't get perl 4.036 to compile or run.
+
+    Run Configure, and use the solaris_2_0 hints, *don't* use
+    the solaris_2_1 hints and don't use the config.sh you may
+    already have.  First you must make sure Configure and make
+    don't find /usr/ucb/cc.  (It must use gcc or the native C
+    compiler: /opt/SUNWspro/bin/cc)
+
+    Some questions need a special answer.
+
+    Are your system (especially dbm) libraries compiled with gcc? [y] y
+
+    yes: gcc 2.3.3 or later uses the standard calling
+    conventions, same as Sun's C.
+
+    Any additional cc flags? [ -traditional -Dvolatile=__volatile__
+    -I/usr/ucbinclude] -traditional -Dvolatile=__volatile__
+    Remove /usr/ucbinclude.
+
+    Any additional libraries? [-lsocket -lnsl -ldbm -lmalloc -lm
+    -lucb] -lsocket -lnsl  -lm
+
+    Don't include -ldbm, -lmalloc and -lucb.
+
+    Perl 5 compiled out of the box.
+
+End_of_Solaris_Notes
+