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comparison m4/lib-ld.m4 @ 153:0b1766da9be8

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use AM_ICONV for better portability of the library location. structure renaming to be more specific.
author Carl Byington <carl@five-ten-sg.com>
date Thu, 12 Mar 2009 15:17:32 -0700
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152:edebaf0e87d2 153:0b1766da9be8
1 # lib-ld.m4 serial 2 (gettext-0.12)
2 dnl Copyright (C) 1996-2003 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.
8
9 dnl Subroutines of libtool.m4,
10 dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
11 dnl with libtool.m4.
12
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 $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
18 acl_cv_prog_gnu_ld=yes
19 else
20 acl_cv_prog_gnu_ld=no
21 fi])
22 with_gnu_ld=$acl_cv_prog_gnu_ld
23 ])
24
25 dnl From libtool-1.4. Sets the variable LD.
26 AC_DEFUN([AC_LIB_PROG_LD],
27 [AC_ARG_WITH(gnu-ld,
28 [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
29 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
30 AC_REQUIRE([AC_PROG_CC])dnl
31 AC_REQUIRE([AC_CANONICAL_HOST])dnl
32 # Prepare PATH_SEPARATOR.
33 # The user is always right.
34 if test "${PATH_SEPARATOR+set}" != set; then
35 echo "#! /bin/sh" >conf$$.sh
36 echo "exit 0" >>conf$$.sh
37 chmod +x conf$$.sh
38 if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
39 PATH_SEPARATOR=';'
40 else
41 PATH_SEPARATOR=:
42 fi
43 rm -f conf$$.sh
44 fi
45 ac_prog=ld
46 if test "$GCC" = yes; then
47 # Check if gcc -print-prog-name=ld gives a path.
48 AC_MSG_CHECKING([for ld used by GCC])
49 case $host in
50 *-*-mingw*)
51 # gcc leaves a trailing carriage return which upsets mingw
52 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
53 *)
54 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
55 esac
56 case $ac_prog in
57 # Accept absolute paths.
58 [[\\/]* | [A-Za-z]:[\\/]*)]
59 [re_direlt='/[^/][^/]*/\.\./']
60 # Canonicalize the path of ld
61 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
62 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
63 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
64 done
65 test -z "$LD" && LD="$ac_prog"
66 ;;
67 "")
68 # If it fails, then pretend we aren't using GCC.
69 ac_prog=ld
70 ;;
71 *)
72 # If it is relative, then search for the first ld in PATH.
73 with_gnu_ld=unknown
74 ;;
75 esac
76 elif test "$with_gnu_ld" = yes; then
77 AC_MSG_CHECKING([for GNU ld])
78 else
79 AC_MSG_CHECKING([for non-GNU ld])
80 fi
81 AC_CACHE_VAL(acl_cv_path_LD,
82 [if test -z "$LD"; then
83 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
84 for ac_dir in $PATH; do
85 test -z "$ac_dir" && ac_dir=.
86 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
87 acl_cv_path_LD="$ac_dir/$ac_prog"
88 # Check to see if the program is GNU ld. I'd rather use --version,
89 # but apparently some GNU ld's only accept -v.
90 # Break only if it was the GNU/non-GNU ld that we prefer.
91 if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
92 test "$with_gnu_ld" != no && break
93 else
94 test "$with_gnu_ld" != yes && break
95 fi
96 fi
97 done
98 IFS="$ac_save_ifs"
99 else
100 acl_cv_path_LD="$LD" # Let the user override the test with a path.
101 fi])
102 LD="$acl_cv_path_LD"
103 if test -n "$LD"; then
104 AC_MSG_RESULT($LD)
105 else
106 AC_MSG_RESULT(no)
107 fi
108 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
109 AC_LIB_PROG_LD_GNU
110 ])