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, distributed under the terms of the GNU 4 dnl General Public License. As a special exception to the GNU General 5 dnl Public License, this file may be distributed as part of a program 6 dnl that contains a configuration script generated by Autoconf, under 7 dnl the same distribution terms as the rest of that program. 8 9 dnl Subroutines of libtool.m4, 10 dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision 11 dnl with libtool.m4. 12 13 dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no. 14 AC_DEFUN([AC_LIB_PROG_LD_GNU], 15 [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld, 16 [# I'd rather use --version here, but apparently some GNU ld's only accept -v. 17 case `$LD -v 2>&1 </dev/null` in 18 *GNU* | *'with BFD'*) 19 acl_cv_prog_gnu_ld=yes ;; 20 *) 21 acl_cv_prog_gnu_ld=no ;; 22 esac]) 23 with_gnu_ld=$acl_cv_prog_gnu_ld 24 ]) 25 26 dnl From libtool-1.4. Sets the variable LD. 27 AC_DEFUN([AC_LIB_PROG_LD], 28 [AC_ARG_WITH(gnu-ld, 29 [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]], 30 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no) 31 AC_REQUIRE([AC_PROG_CC])dnl 32 AC_REQUIRE([AC_CANONICAL_HOST])dnl 33 # Prepare PATH_SEPARATOR. 34 # The user is always right. 35 if test "${PATH_SEPARATOR+set}" != set; then 36 echo "#! /bin/sh" >conf$$.sh 37 echo "exit 0" >>conf$$.sh 38 chmod +x conf$$.sh 39 if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then 40 PATH_SEPARATOR=';' 41 else 42 PATH_SEPARATOR=: 43 fi 44 rm -f conf$$.sh 45 fi 46 ac_prog=ld 47 if test "$GCC" = yes; then 48 # Check if gcc -print-prog-name=ld gives a path. 49 AC_MSG_CHECKING([for ld used by GCC]) 50 case $host in 51 *-*-mingw*) 52 # gcc leaves a trailing carriage return which upsets mingw 53 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; 54 *) 55 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; 56 esac 57 case $ac_prog in 58 # Accept absolute paths. 59 [[\\/]* | [A-Za-z]:[\\/]*)] 60 [re_direlt='/[^/][^/]*/\.\./'] 61 # Canonicalize the path of ld 62 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'` 63 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do 64 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` 65 done 66 test -z "$LD" && LD="$ac_prog" 67 ;; 68 "") 69 # If it fails, then pretend we aren't using GCC. 70 ac_prog=ld 71 ;; 72 *) 73 # If it is relative, then search for the first ld in PATH. 74 with_gnu_ld=unknown 75 ;; 76 esac 77 elif test "$with_gnu_ld" = yes; then 78 AC_MSG_CHECKING([for GNU ld]) 79 else 80 AC_MSG_CHECKING([for non-GNU ld]) 81 fi 82 AC_CACHE_VAL(acl_cv_path_LD, 83 [if test -z "$LD"; then 84 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}" 85 for ac_dir in $PATH; do 86 test -z "$ac_dir" && ac_dir=. 87 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then 88 acl_cv_path_LD="$ac_dir/$ac_prog" 89 # Check to see if the program is GNU ld. I'd rather use --version, 90 # but apparently some GNU ld's only accept -v. 91 # Break only if it was the GNU/non-GNU ld that we prefer. 92 case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in 93 *GNU* | *'with BFD'*) 94 test "$with_gnu_ld" != no && break ;; 95 *) 96 test "$with_gnu_ld" != yes && break ;; 97 esac 98 fi 99 done 100 IFS="$ac_save_ifs" 101 else 102 acl_cv_path_LD="$LD" # Let the user override the test with a path. 103 fi]) 104 LD="$acl_cv_path_LD" 105 if test -n "$LD"; then 106 AC_MSG_RESULT($LD) 107 else 108 AC_MSG_RESULT(no) 109 fi 110 test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) 111 AC_LIB_PROG_LD_GNU 112 ]) 113
