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1 | # lib-ld.m4 serial 5 (gettext-0.18.2) |
2 | dnl Copyright (C) 1996-2003, 2009-2010 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. | |
6 | ||
7 | dnl Subroutines of libtool.m4, | |
8 | dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision | |
9 | dnl with libtool.m4. | |
10 | ||
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 | |
16 | *GNU* | *'with BFD'*) | |
17 | acl_cv_prog_gnu_ld=yes ;; | |
18 | *) | |
19 | acl_cv_prog_gnu_ld=no ;; | |
20 | esac]) | |
21 | with_gnu_ld=$acl_cv_prog_gnu_ld | |
22 | ]) | |
23 | ||
24 | dnl From libtool-1.4. Sets the variable LD. | |
25 | AC_DEFUN([AC_LIB_PROG_LD], | |
26 | [AC_ARG_WITH([gnu-ld], | |
27 | [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]], | |
28 | test "$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 "${PATH_SEPARATOR+set}" != set; then | |
34 | # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which | |
35 | # contains only /bin. Note that ksh looks also at the FPATH variable, | |
36 | # so we have to set that as well for the test. | |
37 | PATH_SEPARATOR=: | |
38 | (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ | |
39 | && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ | |
40 | || PATH_SEPARATOR=';' | |
41 | } | |
42 | fi | |
43 | ac_prog=ld | |
44 | if test "$GCC" = yes; then | |
45 | # Check if gcc -print-prog-name=ld gives a path. | |
46 | AC_MSG_CHECKING([for ld used by GCC]) | |
47 | case $host in | |
48 | *-*-mingw*) | |
49 | # gcc leaves a trailing carriage return which upsets mingw | |
50 | ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; | |
51 | *) | |
52 | ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; | |
53 | esac | |
54 | case $ac_prog in | |
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%/%"` | |
62 | done | |
63 | test -z "$LD" && LD="$ac_prog" | |
64 | ;; | |
65 | "") | |
66 | # If it fails, then pretend we aren't using GCC. | |
67 | ac_prog=ld | |
68 | ;; | |
69 | *) | |
70 | # If it is relative, then search for the first ld in PATH. | |
71 | with_gnu_ld=unknown | |
72 | ;; | |
73 | esac | |
74 | elif test "$with_gnu_ld" = yes; then | |
75 | AC_MSG_CHECKING([for GNU ld]) | |
76 | else | |
77 | AC_MSG_CHECKING([for non-GNU ld]) | |
78 | fi | |
79 | AC_CACHE_VAL([acl_cv_path_LD], | |
80 | [if test -z "$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 | |
90 | *GNU* | *'with BFD'*) | |
91 | test "$with_gnu_ld" != no && break ;; | |
92 | *) | |
93 | test "$with_gnu_ld" != yes && break ;; | |
94 | esac | |
95 | fi | |
96 | done | |
97 | IFS="$ac_save_ifs" | |
98 | else | |
99 | acl_cv_path_LD="$LD" # Let the user override the test with a path. | |
100 | fi]) | |
101 | LD="$acl_cv_path_LD" | |
102 | if test -n "$LD"; then | |
103 | AC_MSG_RESULT([$LD]) | |
104 | else | |
105 | AC_MSG_RESULT([no]) | |
106 | fi | |
107 | test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) | |
108 | AC_LIB_PROG_LD_GNU | |
109 | ]) |