1 # lib-ld.m4 serial 5 (gettext-0.18.2)
2 dnl Copyright (C) 1996-2003, 2009-2012 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 dnl Subroutines of libtool.m4,
8 dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
11 dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
12 AC_DEFUN([AC_LIB_PROG_LD_GNU],
13 [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
14 [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
15 case `$LD -v 2>&1 </dev/null` in
17 acl_cv_prog_gnu_ld=yes ;;
19 acl_cv_prog_gnu_ld=no ;;
21 with_gnu_ld=$acl_cv_prog_gnu_ld
24 dnl From libtool-1.4. Sets the variable LD.
25 AC_DEFUN([AC_LIB_PROG_LD],
26 [AC_ARG_WITH([gnu-ld],
27 [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
28 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
29 AC_REQUIRE([AC_PROG_CC])dnl
30 AC_REQUIRE([AC_CANONICAL_HOST])dnl
31 # Prepare PATH_SEPARATOR.
32 # The user is always right.
33 if test "${PATH_SEPARATOR+set}" != set; then
34 # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
35 # contains only /bin. Note that ksh looks also at the FPATH variable,
36 # so we have to set that as well for the test.
38 (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
39 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
44 if test "$GCC" = yes; then
45 # Check if gcc -print-prog-name=ld gives a path.
46 AC_MSG_CHECKING([for ld used by GCC])
49 # gcc leaves a trailing carriage return which upsets mingw
50 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
52 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
55 # Accept absolute paths.
56 [[\\/]* | [A-Za-z]:[\\/]*)]
57 [re_direlt='/[^/][^/]*/\.\./']
58 # Canonicalize the path of ld
59 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
60 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
61 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
63 test -z "$LD" && LD="$ac_prog"
66 # If it fails, then pretend we aren't using GCC.
70 # If it is relative, then search for the first ld in PATH.
74 elif test "$with_gnu_ld" = yes; then
75 AC_MSG_CHECKING([for GNU ld])
77 AC_MSG_CHECKING([for non-GNU ld])
79 AC_CACHE_VAL([acl_cv_path_LD],
80 [if test -z "$LD"; then
81 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
82 for ac_dir in $PATH; do
83 test -z "$ac_dir" && ac_dir=.
84 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
85 acl_cv_path_LD="$ac_dir/$ac_prog"
86 # Check to see if the program is GNU ld. I'd rather use --version,
87 # but apparently some GNU ld's only accept -v.
88 # Break only if it was the GNU/non-GNU ld that we prefer.
89 case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
91 test "$with_gnu_ld" != no && break ;;
93 test "$with_gnu_ld" != yes && break ;;
99 acl_cv_path_LD="$LD" # Let the user override the test with a path.
102 if test -n "$LD"; then
107 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])