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# lib-ld.m4 serial 1 (gettext-0.11) |
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dnl Copyright (C) 1996-2002 Free Software Foundation, Inc. |
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dnl This file is free software, distributed under the terms of the GNU |
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dnl General Public License. As a special exception to the GNU General |
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dnl Public License, this file may be distributed as part of a program |
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dnl that contains a configuration script generated by Autoconf, under |
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dnl the same distribution terms as the rest of that program. |
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dnl Subroutines of libtool.m4, |
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dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision |
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dnl with libtool.m4. |
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dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no. |
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AC_DEFUN([AC_LIB_PROG_LD_GNU], |
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[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld, |
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[# I'd rather use --version here, but apparently some GNU ld's only accept -v. |
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if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then |
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acl_cv_prog_gnu_ld=yes |
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else |
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acl_cv_prog_gnu_ld=no |
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fi]) |
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with_gnu_ld=$acl_cv_prog_gnu_ld |
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]) |
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dnl From libtool-1.4. Sets the variable LD. |
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AC_DEFUN([AC_LIB_PROG_LD], |
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[AC_ARG_WITH(gnu-ld, |
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[ --with-gnu-ld assume the C compiler uses GNU ld [default=no]], |
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test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no) |
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AC_REQUIRE([AC_PROG_CC])dnl |
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AC_REQUIRE([AC_CANONICAL_HOST])dnl |
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ac_prog=ld |
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if test "$GCC" = yes; then |
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# Check if gcc -print-prog-name=ld gives a path. |
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AC_MSG_CHECKING([for ld used by GCC]) |
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case $host in |
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*-*-mingw*) |
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# gcc leaves a trailing carriage return which upsets mingw |
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ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; |
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*) |
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ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; |
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esac |
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case $ac_prog in |
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# Accept absolute paths. |
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[[\\/]* | [A-Za-z]:[\\/]*)] |
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[re_direlt='/[^/][^/]*/\.\./'] |
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# Canonicalize the path of ld |
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ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'` |
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while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do |
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ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` |
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done |
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test -z "$LD" && LD="$ac_prog" |
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;; |
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"") |
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# If it fails, then pretend we aren't using GCC. |
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ac_prog=ld |
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;; |
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*) |
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# If it is relative, then search for the first ld in PATH. |
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with_gnu_ld=unknown |
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;; |
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esac |
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elif test "$with_gnu_ld" = yes; then |
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AC_MSG_CHECKING([for GNU ld]) |
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else |
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AC_MSG_CHECKING([for non-GNU ld]) |
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fi |
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AC_CACHE_VAL(acl_cv_path_LD, |
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[if test -z "$LD"; then |
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}" |
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for ac_dir in $PATH; do |
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test -z "$ac_dir" && ac_dir=. |
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if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then |
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acl_cv_path_LD="$ac_dir/$ac_prog" |
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# Check to see if the program is GNU ld. I'd rather use --version, |
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# but apparently some GNU ld's only accept -v. |
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# Break only if it was the GNU/non-GNU ld that we prefer. |
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if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then |
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test "$with_gnu_ld" != no && break |
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else |
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test "$with_gnu_ld" != yes && break |
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fi |
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fi |
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done |
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IFS="$ac_save_ifs" |
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else |
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acl_cv_path_LD="$LD" # Let the user override the test with a path. |
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fi]) |
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LD="$acl_cv_path_LD" |
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if test -n "$LD"; then |
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AC_MSG_RESULT($LD) |
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else |
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AC_MSG_RESULT(no) |
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fi |
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test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) |
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AC_LIB_PROG_LD_GNU |
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]) |
