1 ## libtool.m4 - Configure libtool for the host system. -*-Shell-script-*-
2 ## Copyright (C) 1996-1999,2000 Free Software Foundation, Inc.
3 ## Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
5 ## This program is free software; you can redistribute it and/or modify
6 ## it under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 2 of the License, or
8 ## (at your option) any later version.
10 ## This program is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with this program; if not, write to the Free Software
17 ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 ## As a special exception to the GNU General Public License, if you
20 ## distribute this file as part of a program that contains a
21 ## configuration script generated by Autoconf, you may include it under
22 ## the same distribution terms that you use for the rest of that program.
24 # No, PostgreSQL doesn't use libtool (yet), we just borrow stuff from it.
25 # This file was taken on 2000-10-20 from the multi-language branch (since
26 # that is the branch that PostgreSQL would most likely adopt anyway).
29 # ... bunch of stuff removed here ...
31 # PGAC_PROG_LD - find the path to the GNU or non-GNU linker
32 AC_DEFUN([PGAC_PROG_LD],
34 [ --with-gnu-ld assume the C compiler uses GNU ld [[default=no]]],
35 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
36 AC_REQUIRE([AC_PROG_CC])dnl
37 AC_REQUIRE([AC_CANONICAL_HOST])dnl
38 dnl ###not for PostgreSQL### AC_REQUIRE([AC_CANONICAL_BUILD])dnl
40 if test "$GCC" = yes; then
41 # Check if gcc -print-prog-name=ld gives a path.
42 AC_MSG_CHECKING([for ld used by GCC])
45 # gcc leaves a trailing carriage return which upsets mingw
46 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
48 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
51 # Accept absolute paths.
53 [\\/]* | [A-Za-z]:[\\/]*)
54 re_direlt='/[^/][^/]*/\.\./'
56 # Canonicalize the path of ld
57 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
58 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
59 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
61 test -z "$LD" && LD="$ac_prog"
64 # If it fails, then pretend we aren't using GCC.
68 # If it is relative, then search for the first ld in PATH.
72 elif test "$with_gnu_ld" = yes; then
73 AC_MSG_CHECKING([for GNU ld])
75 AC_MSG_CHECKING([for non-GNU ld])
77 AC_CACHE_VAL(ac_cv_path_LD,
78 [if test -z "$LD"; then
79 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
80 for ac_dir in $PATH; do
81 test -z "$ac_dir" && ac_dir=.
82 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
83 ac_cv_path_LD="$ac_dir/$ac_prog"
84 # Check to see if the program is GNU ld. I'd rather use --version,
85 # but apparently some GNU ld's only accept -v.
86 # Break only if it was the GNU/non-GNU ld that we prefer.
87 if "$ac_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
88 test "$with_gnu_ld" != no && break
90 test "$with_gnu_ld" != yes && break
96 ac_cv_path_LD="$LD" # Let the user override the test with a path.
99 if test -n "$LD"; then
104 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
108 AC_DEFUN([PGAC_PROG_LD_GNU],
109 [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], ac_cv_prog_gnu_ld,
110 [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
111 if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
112 ac_cv_prog_gnu_ld=yes
116 with_gnu_ld=$ac_cv_prog_gnu_ld
119 # ... more stuff removed ...