1 # lib-ld.m4 serial 2 (gettext-0.12) 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 if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then 18 acl_cv_prog_gnu_ld=yes 19 else 20 acl_cv_prog_gnu_ld=no 21 fi]) 22 with_gnu_ld=$acl_cv_prog_gnu_ld 23 ]) 24 25 dnl From libtool-1.4. Sets the variable LD. 26 AC_DEFUN([AC_LIB_PROG_LD], 27 [AC_ARG_WITH(gnu-ld, 28 [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]], 29 test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no) 30 AC_REQUIRE([AC_PROG_CC])dnl 31 AC_REQUIRE([AC_CANONICAL_HOST])dnl 32 # Prepare PATH_SEPARATOR. 33 # The user is always right. 34 if test "${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 44 fi 45 ac_prog=ld 46 if 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 76 elif test "$with_gnu_ld" = yes; then 77 AC_MSG_CHECKING([for GNU ld]) 78 else 79 AC_MSG_CHECKING([for non-GNU ld]) 80 fi 81 AC_CACHE_VAL(acl_cv_path_LD, 82 [if test -z "$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="$ac_save_ifs" 99 else 100 acl_cv_path_LD="$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 ]) 111
