1 # lib-ld.m4 serial 1 (gettext-0.11)
2 dnl Copyright (C) 1996-2002 Free Software Foundation, Inc.
3 dnl This file is free software, distributed under the terms of the GNU
4 dnl General Public License. As a special exception to the GNU General
5 dnl Public License, this file may be distributed as part of a program
6 dnl that contains a configuration script generated by Autoconf, under
7 dnl the same distribution terms as the rest of that program.
9 dnl Subroutines of libtool.m4,
10 dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
13 dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
14 AC_DEFUN([AC_LIB_PROG_LD_GNU],
15 [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
16 [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
17 if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
18 acl_cv_prog_gnu_ld=yes
22 with_gnu_ld=$acl_cv_prog_gnu_ld
25 dnl From libtool-1.4. Sets the variable LD.
26 AC_DEFUN([AC_LIB_PROG_LD],
28 [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
29 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
30 AC_REQUIRE([AC_PROG_CC])dnl
31 AC_REQUIRE([AC_CANONICAL_HOST])dnl
33 if test "$GCC" = yes; then
34 # Check if gcc -print-prog-name=ld gives a path.
35 AC_MSG_CHECKING([for ld used by GCC])
38 # gcc leaves a trailing carriage return which upsets mingw
39 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
41 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
44 # Accept absolute paths.
45 [[\\/]* | [A-Za-z]:[\\/]*)]
46 [re_direlt='/[^/][^/]*/\.\./']
47 # Canonicalize the path of ld
48 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
49 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
50 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
52 test -z "$LD" && LD="$ac_prog"
55 # If it fails, then pretend we aren't using GCC.
59 # If it is relative, then search for the first ld in PATH.
63 elif test "$with_gnu_ld" = yes; then
64 AC_MSG_CHECKING([for GNU ld])
66 AC_MSG_CHECKING([for non-GNU ld])
68 AC_CACHE_VAL(acl_cv_path_LD,
69 [if test -z "$LD"; then
70 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
71 for ac_dir in $PATH; do
72 test -z "$ac_dir" && ac_dir=.
73 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
74 acl_cv_path_LD="$ac_dir/$ac_prog"
75 # Check to see if the program is GNU ld. I'd rather use --version,
76 # but apparently some GNU ld's only accept -v.
77 # Break only if it was the GNU/non-GNU ld that we prefer.
78 if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
79 test "$with_gnu_ld" != no && break
81 test "$with_gnu_ld" != yes && break
87 acl_cv_path_LD="$LD" # Let the user override the test with a path.
90 if test -n "$LD"; then
95 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])