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