/[jscoverage]/trunk/m4/lib-ld.m4
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Contents of /trunk/m4/lib-ld.m4

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Revision 174 - (show annotations)
Sat Sep 20 23:27:14 2008 UTC (10 years, 11 months ago) by siliconforks
File size: 3417 byte(s)
Provide better character encoding support.
1 # lib-ld.m4 serial 3 (gettext-0.13)
2 dnl Copyright (C) 1996-2003 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 echo "#! /bin/sh" >conf$$.sh
35 echo "exit 0" >>conf$$.sh
36 chmod +x conf$$.sh
37 if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
38 PATH_SEPARATOR=';'
39 else
40 PATH_SEPARATOR=:
41 fi
42 rm -f conf$$.sh
43 fi
44 ac_prog=ld
45 if test "$GCC" = yes; then
46 # Check if gcc -print-prog-name=ld gives a path.
47 AC_MSG_CHECKING([for ld used by GCC])
48 case $host in
49 *-*-mingw*)
50 # gcc leaves a trailing carriage return which upsets mingw
51 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
52 *)
53 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
54 esac
55 case $ac_prog in
56 # Accept absolute paths.
57 [[\\/]* | [A-Za-z]:[\\/]*)]
58 [re_direlt='/[^/][^/]*/\.\./']
59 # Canonicalize the path of ld
60 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
61 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
62 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
63 done
64 test -z "$LD" && LD="$ac_prog"
65 ;;
66 "")
67 # If it fails, then pretend we aren't using GCC.
68 ac_prog=ld
69 ;;
70 *)
71 # If it is relative, then search for the first ld in PATH.
72 with_gnu_ld=unknown
73 ;;
74 esac
75 elif test "$with_gnu_ld" = yes; then
76 AC_MSG_CHECKING([for GNU ld])
77 else
78 AC_MSG_CHECKING([for non-GNU ld])
79 fi
80 AC_CACHE_VAL(acl_cv_path_LD,
81 [if test -z "$LD"; then
82 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
83 for ac_dir in $PATH; do
84 test -z "$ac_dir" && ac_dir=.
85 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
86 acl_cv_path_LD="$ac_dir/$ac_prog"
87 # Check to see if the program is GNU ld. I'd rather use --version,
88 # but apparently some GNU ld's only accept -v.
89 # Break only if it was the GNU/non-GNU ld that we prefer.
90 case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
91 *GNU* | *'with BFD'*)
92 test "$with_gnu_ld" != no && break ;;
93 *)
94 test "$with_gnu_ld" != yes && break ;;
95 esac
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 ])

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