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_REQUIRE([AC_PROG_EGREP])dnl
16AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
17[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
18if $LD -v 2>&1 </dev/null | $EGREP '(GNU|with BFD)' 1>&5; then
19  acl_cv_prog_gnu_ld=yes
20else
21  acl_cv_prog_gnu_ld=no
22fi])
23with_gnu_ld=$acl_cv_prog_gnu_ld
24])
25
26dnl From libtool-1.4. Sets the variable LD.
27AC_DEFUN([AC_LIB_PROG_LD],
28[AC_ARG_WITH(gnu-ld,
29[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
30test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
31AC_REQUIRE([AC_PROG_CC])dnl
32AC_REQUIRE([AC_CANONICAL_HOST])dnl
33AC_REQUIRE([AC_PROG_EGREP])dnl
34# Prepare PATH_SEPARATOR.
35# The user is always right.
36if test "${PATH_SEPARATOR+set}" != set; then
37  echo "#! /bin/sh" >conf$$.sh
38  echo  "exit 0"   >>conf$$.sh
39  chmod +x conf$$.sh
40  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
41    PATH_SEPARATOR=';'
42  else
43    PATH_SEPARATOR=:
44  fi
45  rm -f conf$$.sh
46fi
47ac_prog=ld
48if test "$GCC" = yes; then
49  # Check if gcc -print-prog-name=ld gives a path.
50  AC_MSG_CHECKING([for ld used by GCC])
51  case $host in
52  *-*-mingw*)
53    # gcc leaves a trailing carriage return which upsets mingw
54    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
55  *)
56    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
57  esac
58  case $ac_prog in
59    # Accept absolute paths.
60    [[\\/]* | [A-Za-z]:[\\/]*)]
61      [re_direlt='/[^/][^/]*/\.\./']
62      # Canonicalize the path of ld
63      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
64      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
65	ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
66      done
67      test -z "$LD" && LD="$ac_prog"
68      ;;
69  "")
70    # If it fails, then pretend we aren't using GCC.
71    ac_prog=ld
72    ;;
73  *)
74    # If it is relative, then search for the first ld in PATH.
75    with_gnu_ld=unknown
76    ;;
77  esac
78elif test "$with_gnu_ld" = yes; then
79  AC_MSG_CHECKING([for GNU ld])
80else
81  AC_MSG_CHECKING([for non-GNU ld])
82fi
83AC_CACHE_VAL(acl_cv_path_LD,
84[if test -z "$LD"; then
85  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
86  for ac_dir in $PATH; do
87    test -z "$ac_dir" && ac_dir=.
88    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
89      acl_cv_path_LD="$ac_dir/$ac_prog"
90      # Check to see if the program is GNU ld.  I'd rather use --version,
91      # but apparently some GNU ld's only accept -v.
92      # Break only if it was the GNU/non-GNU ld that we prefer.
93      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | $EGREP '(GNU|with BFD)' > /dev/null; then
94	test "$with_gnu_ld" != no && break
95      else
96	test "$with_gnu_ld" != yes && break
97      fi
98    fi
99  done
100  IFS="$ac_save_ifs"
101else
102  acl_cv_path_LD="$LD" # Let the user override the test with a path.
103fi])
104LD="$acl_cv_path_LD"
105if test -n "$LD"; then
106  AC_MSG_RESULT($LD)
107else
108  AC_MSG_RESULT(no)
109fi
110test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
111AC_LIB_PROG_LD_GNU
112])
113