source: projects/proc-rpmnew/trunk/m4/lib-ld.m4 @ 4548

Revision 4548, 3.4 KB checked in by yasumichi, 11 years ago (diff)

add m4 directory.

Line 
1# lib-ld.m4 serial 4 (gettext-0.18)
2dnl Copyright (C) 1996-2003, 2009-2010 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl Subroutines of libtool.m4,
8dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
9dnl with libtool.m4.
10
11dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
12AC_DEFUN([AC_LIB_PROG_LD_GNU],
13[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
14[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
15case `$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 ;;
20esac])
21with_gnu_ld=$acl_cv_prog_gnu_ld
22])
23
24dnl From libtool-1.4. Sets the variable LD.
25AC_DEFUN([AC_LIB_PROG_LD],
26[AC_ARG_WITH([gnu-ld],
27[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
28test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
29AC_REQUIRE([AC_PROG_CC])dnl
30AC_REQUIRE([AC_CANONICAL_HOST])dnl
31# Prepare PATH_SEPARATOR.
32# The user is always right.
33if 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
43fi
44ac_prog=ld
45if 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
75elif test "$with_gnu_ld" = yes; then
76  AC_MSG_CHECKING([for GNU ld])
77else
78  AC_MSG_CHECKING([for non-GNU ld])
79fi
80AC_CACHE_VAL([acl_cv_path_LD],
81[if test -z "$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="$ac_save_ifs"
99else
100  acl_cv_path_LD="$LD" # Let the user override the test with a path.
101fi])
102LD="$acl_cv_path_LD"
103if test -n "$LD"; then
104  AC_MSG_RESULT([$LD])
105else
106  AC_MSG_RESULT([no])
107fi
108test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
109AC_LIB_PROG_LD_GNU
110])
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