mirror of https://github.com/postgres/postgres
Previously export_dynamic was set in src/makefiles/Makefile.$port. For solaris this required exporting with_gnu_ld. The determination of with_gnu_ld would be nontrivial to copy for meson PGXS compatibility. It's also nice to delete libtool.m4. This uses -Wl,--export-dynamic on all platforms, previously all platforms but FreeBSD used -Wl,-E. The likelihood of a name conflict seems lower with the longer spelling. Discussion: https://postgr.es/m/20221005200710.luvw5evhwf6clig6@awork3.anarazel.depull/112/head
Andres Freund
3 years ago
parent
8018ffbf58
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9db49fc5bf
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## libtool.m4 - Configure libtool for the host system. -*-Shell-script-*- |
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## Copyright (C) 1996-1999,2000 Free Software Foundation, Inc. |
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## Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996 |
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## |
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## This program is free software; you can redistribute it and/or modify |
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## it under the terms of the GNU General Public License as published by |
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## the Free Software Foundation; either version 2 of the License, or |
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## (at your option) any later version. |
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## |
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## This program is distributed in the hope that it will be useful, but |
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## WITHOUT ANY WARRANTY; without even the implied warranty of |
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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## General Public License for more details. |
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## |
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## You should have received a copy of the GNU General Public License |
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## along with this program; if not, write to the Free Software |
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## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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## |
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## As a special exception to the GNU General Public License, if you |
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## distribute this file as part of a program that contains a |
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## configuration script generated by Autoconf, you may include it under |
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## the same distribution terms that you use for the rest of that program. |
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# No, PostgreSQL doesn't use libtool (yet), we just borrow stuff from it. |
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# This file was taken on 2000-10-20 from the multi-language branch (since |
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# that is the branch that PostgreSQL would most likely adopt anyway). |
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# --petere |
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# ... bunch of stuff removed here ... |
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# PGAC_PROG_LD - find the path to the GNU or non-GNU linker |
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AC_DEFUN([PGAC_PROG_LD], |
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[AC_ARG_WITH(gnu-ld, |
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[ --with-gnu-ld assume the C compiler uses GNU ld [[default=no]]], |
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test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no) |
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AC_REQUIRE([AC_PROG_CC])dnl |
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AC_REQUIRE([AC_CANONICAL_HOST])dnl |
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dnl ###not for PostgreSQL### AC_REQUIRE([AC_CANONICAL_BUILD])dnl |
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ac_prog=ld |
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if test "$GCC" = yes; then |
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# Check if gcc -print-prog-name=ld gives a path. |
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AC_MSG_CHECKING([for ld used by GCC]) |
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case $host in |
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*-*-mingw*) |
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# gcc leaves a trailing carriage return which upsets mingw |
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ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; |
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*) |
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ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; |
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esac |
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case "$ac_prog" in |
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# Accept absolute paths. |
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changequote(,)dnl |
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[\\/]* | [A-Za-z]:[\\/]*) |
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re_direlt='/[^/][^/]*/\.\./' |
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changequote([,])dnl |
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# Canonicalize the path of ld |
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ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'` |
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while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do |
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ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` |
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done |
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test -z "$LD" && LD="$ac_prog" |
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;; |
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"") |
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# If it fails, then pretend we aren't using GCC. |
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ac_prog=ld |
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;; |
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*) |
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# If it is relative, then search for the first ld in PATH. |
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with_gnu_ld=unknown |
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;; |
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esac |
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elif test "$with_gnu_ld" = yes; then |
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AC_MSG_CHECKING([for GNU ld]) |
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else |
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AC_MSG_CHECKING([for non-GNU ld]) |
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fi |
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AC_CACHE_VAL(ac_cv_path_LD, |
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[if test -z "$LD"; then |
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}" |
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for ac_dir in $PATH; do |
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test -z "$ac_dir" && ac_dir=. |
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if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then |
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ac_cv_path_LD="$ac_dir/$ac_prog" |
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# Check to see if the program is GNU ld. I'd rather use --version, |
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# but apparently some GNU ld's only accept -v. |
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# Break only if it was the GNU/non-GNU ld that we prefer. |
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if "$ac_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then |
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test "$with_gnu_ld" != no && break |
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else |
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test "$with_gnu_ld" != yes && break |
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fi |
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fi |
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done |
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IFS="$ac_save_ifs" |
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else |
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ac_cv_path_LD="$LD" # Let the user override the test with a path. |
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fi]) |
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LD="$ac_cv_path_LD" |
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if test -n "$LD"; then |
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AC_MSG_RESULT($LD) |
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else |
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AC_MSG_RESULT(no) |
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fi |
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test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) |
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PGAC_PROG_LD_GNU |
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]) |
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AC_DEFUN([PGAC_PROG_LD_GNU], |
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[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], ac_cv_prog_gnu_ld, |
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[# I'd rather use --version here, but apparently some GNU ld's only accept -v. |
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if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then |
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ac_cv_prog_gnu_ld=yes |
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else |
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ac_cv_prog_gnu_ld=no |
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fi]) |
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with_gnu_ld=$ac_cv_prog_gnu_ld |
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]) |
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# ... more stuff removed ... |
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