1# lib-ld.m4 serial 2 (gettext-0.12)
2dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
3dnl This file is free software, distributed under the terms of the GNU
4dnl General Public License.  As a special exception to the GNU General
5dnl Public License, this file may be distributed as part of a program
6dnl that contains a configuration script generated by Autoconf, under
7dnl the same distribution terms as the rest of that program.
8
9dnl Subroutines of libtool.m4,
10dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
11dnl with libtool.m4.
12
13dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
14AC_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.
17if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
18  acl_cv_prog_gnu_ld=yes
19else
20  acl_cv_prog_gnu_ld=no
21fi])
22with_gnu_ld=$acl_cv_prog_gnu_ld
23])
24
25dnl From libtool-1.4. Sets the variable LD.
26AC_DEFUN([AC_LIB_PROG_LD],
27[AC_ARG_WITH(gnu-ld,
28[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
29test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
30AC_REQUIRE([AC_PROG_CC])dnl
31AC_REQUIRE([AC_CANONICAL_HOST])dnl
32# Prepare PATH_SEPARATOR.
33# The user is always right.
34if test "${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
44fi
45ac_prog=ld
46if 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
76elif test "$with_gnu_ld" = yes; then
77  AC_MSG_CHECKING([for GNU ld])
78else
79  AC_MSG_CHECKING([for non-GNU ld])
80fi
81AC_CACHE_VAL(acl_cv_path_LD,
82[if test -z "$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="$ac_save_ifs"
99else
100  acl_cv_path_LD="$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])
111