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# lib-link.m4 serial 4 (gettext-0.12)
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dnl Copyright (C) 2001-2003 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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# lib-link.m4 serial 9 (gettext-0.16)
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dnl Copyright (C) 2001-2006 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Bruno Haible.
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dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
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dnl the libraries corresponding to explicit and implicit dependencies.
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dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
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dnl hardcode_direct, hardcode_minus_L.
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AC_DEFUN([AC_LIB_RPATH],
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dnl Tell automake >= 1.10 to complain if config.rpath is missing.
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m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])])
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AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS
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AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host
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dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
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AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
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AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
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define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
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[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
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dnl By default, look in $includedir and $libdir.
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if test $use_additional = yes; then
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if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
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if test -n "$shlibext" \
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&& { test -f "$additional_libdir/lib$name.$shlibext" \
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|| { test "$shlibext" = dll \
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&& test -f "$additional_libdir/lib$name.dll.a"; }; }; then
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found_dir="$additional_libdir"
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found_so="$additional_libdir/lib$name.$shlibext"
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if test -f "$additional_libdir/lib$name.$shlibext"; then
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found_so="$additional_libdir/lib$name.$shlibext"
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found_so="$additional_libdir/lib$name.dll.a"
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if test -f "$additional_libdir/lib$name.la"; then
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found_la="$additional_libdir/lib$name.la"
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dir=`echo "X$x" | sed -e 's/^X-L//'`
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if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
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if test -n "$shlibext" \
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&& { test -f "$dir/lib$name.$shlibext" \
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|| { test "$shlibext" = dll \
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&& test -f "$dir/lib$name.dll.a"; }; }; then
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found_so="$dir/lib$name.$shlibext"
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if test -f "$dir/lib$name.$shlibext"; then
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found_so="$dir/lib$name.$shlibext"
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found_so="$dir/lib$name.dll.a"
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if test -f "$dir/lib$name.la"; then
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found_la="$dir/lib$name.la"
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dnl Linking with a shared library. We attempt to hardcode its
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dnl directory into the executable's runpath, unless it's the
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dnl standard /usr/lib.
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if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
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if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/$acl_libdirstem"; then
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dnl No hardcoding is needed.
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
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dnl Assume the include files are nearby.
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additional_includedir=
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case "$found_dir" in
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basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
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*/$acl_libdirstem | */$acl_libdirstem/)
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basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
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additional_includedir="$basedir/include"
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dnl 3. if it's already present in $LDFLAGS or the already
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dnl constructed $LIBNAME,
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dnl 4. if it doesn't exist as a directory.
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if test "X$additional_libdir" != "X/usr/lib"; then
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if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
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if test "X$additional_libdir" = "X/usr/local/lib"; then
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if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
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if test -n "$GCC"; then
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linux* | gnu* | k*bsd*-gnu) haveit=yes;;
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dnl For those cases where a variable contains several -L and -l options
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dnl referring to unknown libraries and directories, this macro determines the
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dnl necessary additional linker options for the runtime path.
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dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
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dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
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dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
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dnl otherwise linking without libtool is assumed.
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AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
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AC_REQUIRE([AC_LIB_RPATH])
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AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
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if test "$enable_rpath" != no; then
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if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
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dnl Use an explicit option to hardcode directories into the resulting
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if test -n "$next"; then
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dnl No need to hardcode the standard /usr/lib.
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if test "X$dir" != "X/usr/$acl_libdirstem"; then
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rpathdirs="$rpathdirs $dir"
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-L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
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dnl No need to hardcode the standard /usr/lib.
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if test "X$dir" != "X/usr/$acl_libdirstem"; then
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rpathdirs="$rpathdirs $dir"
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if test "X$rpathdirs" != "X"; then
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if test -n ""$3""; then
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dnl libtool is used for linking. Use -R options.
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for dir in $rpathdirs; do
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$1="${$1}${$1:+ }-R$dir"
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dnl The linker is used for linking directly.
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if test -n "$hardcode_libdir_separator"; then
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dnl Weird platform: only the last -rpath option counts, the user
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dnl must pass all path elements in one option.
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for dir in $rpathdirs; do
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alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$dir"
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acl_save_libdir="$libdir"
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eval flag=\"$hardcode_libdir_flag_spec\"
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libdir="$acl_save_libdir"
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dnl The -rpath options are cumulative.
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for dir in $rpathdirs; do
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acl_save_libdir="$libdir"
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eval flag=\"$hardcode_libdir_flag_spec\"
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libdir="$acl_save_libdir"
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$1="${$1}${$1:+ }$flag"
added
removed
m4/lib-link.m4
