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

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Revision 174 - (hide annotations)
Sat Sep 20 23:27:14 2008 UTC (12 years, 2 months ago) by siliconforks
File size: 3417 byte(s)
Provide better character encoding support.
1 siliconforks 174 # 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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