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# lib-link.m4 serial 10 (gettext-0.16.1)
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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 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 augments the CPPFLAGS variable.
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dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
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dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
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AC_DEFUN([AC_LIB_LINKFLAGS],
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AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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AC_REQUIRE([AC_LIB_RPATH])
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define([Name],[translit([$1],[./-], [___])])
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define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
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[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
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AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
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AC_LIB_LINKFLAGS_BODY([$1], [$2])
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ac_cv_lib[]Name[]_libs="$LIB[]NAME"
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ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
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ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
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ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
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LIB[]NAME="$ac_cv_lib[]Name[]_libs"
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LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
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INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
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LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
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AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
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AC_SUBST([LIB]NAME[_PREFIX])
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dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
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dnl results of this search when this library appears as a dependency.
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dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode)
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dnl searches for libname and the libraries corresponding to explicit and
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dnl implicit dependencies, together with the specified include files and
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dnl the ability to compile and link the specified testcode. If found, it
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dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and
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dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and
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dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
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dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
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dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
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dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
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AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
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AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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AC_REQUIRE([AC_LIB_RPATH])
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define([Name],[translit([$1],[./-], [___])])
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define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
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[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
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dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
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AC_LIB_LINKFLAGS_BODY([$1], [$2])
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dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
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dnl because if the user has installed lib[]Name and not disabled its use
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dnl via --without-lib[]Name-prefix, he wants to use it.
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ac_save_CPPFLAGS="$CPPFLAGS"
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AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
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AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
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LIBS="$LIBS $LIB[]NAME"
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AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no])
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if test "$ac_cv_lib[]Name" = yes; then
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AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.])
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AC_MSG_CHECKING([how to link with lib[]$1])
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AC_MSG_RESULT([$LIB[]NAME])
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dnl If $LIB[]NAME didn't lead to a usable library, we don't need
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dnl $INC[]NAME either.
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CPPFLAGS="$ac_save_CPPFLAGS"
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AC_SUBST([HAVE_LIB]NAME)
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AC_SUBST([LIB]NAME[_PREFIX])
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dnl Determine the platform dependent parameters needed to use rpath:
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dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator,
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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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AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
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AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [
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CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
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${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
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libext="$acl_cv_libext"
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shlibext="$acl_cv_shlibext"
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hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
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hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
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hardcode_direct="$acl_cv_hardcode_direct"
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hardcode_minus_L="$acl_cv_hardcode_minus_L"
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dnl Determine whether the user wants rpath handling at all.
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[ --disable-rpath do not hardcode runtime library paths],
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dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
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dnl the libraries corresponding to explicit and implicit dependencies.
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dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
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dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
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dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
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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 Autoconf >= 2.61 supports dots in --with options.
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define([N_A_M_E],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[translit([$1],[.],[_])],[$1])])
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dnl By default, look in $includedir and $libdir.
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AC_LIB_WITH_FINAL_PREFIX([
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eval additional_includedir=\"$includedir\"
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eval additional_libdir=\"$libdir\"
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AC_LIB_ARG_WITH([lib]N_A_M_E[-prefix],
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[ --with-lib]N_A_M_E[-prefix[=DIR] search for lib$1 in DIR/include and DIR/lib
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--without-lib]N_A_M_E[-prefix don't search for lib$1 in includedir and libdir],
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if test "X$withval" = "Xno"; then
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if test "X$withval" = "X"; then
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AC_LIB_WITH_FINAL_PREFIX([
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eval additional_includedir=\"$includedir\"
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eval additional_libdir=\"$libdir\"
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additional_includedir="$withval/include"
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additional_libdir="$withval/$acl_libdirstem"
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dnl Search the library and its dependencies in $additional_libdir and
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dnl $LDFLAGS. Using breadth-first-seach.
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names_already_handled=
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names_next_round='$1 $2'
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while test -n "$names_next_round"; do
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names_this_round="$names_next_round"
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for name in $names_this_round; do
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for n in $names_already_handled; do
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if test "$n" = "$name"; then
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if test -z "$already_handled"; then
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names_already_handled="$names_already_handled $name"
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dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
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dnl or AC_LIB_HAVE_LINKFLAGS call.
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uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
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eval value=\"\$HAVE_LIB$uppername\"
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if test -n "$value"; then
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if test "$value" = yes; then
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eval value=\"\$LIB$uppername\"
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test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
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eval value=\"\$LTLIB$uppername\"
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test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
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dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
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dnl that this library doesn't exist. So just drop it.
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dnl Search the library lib$name in $additional_libdir and $LDFLAGS
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dnl and the already constructed $LIBNAME/$LTLIBNAME.
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if test $use_additional = yes; then
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if test -n "$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="$additional_libdir"
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if test -f "$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$name.la"
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if test -f "$additional_libdir/lib$name.$libext"; then
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found_dir="$additional_libdir"
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found_a="$additional_libdir/lib$name.$libext"
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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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if test "X$found_dir" = "X"; then
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for x in $LDFLAGS $LTLIB[]NAME; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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dir=`echo "X$x" | sed -e 's/^X-L//'`
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if test -n "$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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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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if test -f "$dir/lib$name.$libext"; then
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found_a="$dir/lib$name.$libext"
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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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if test "X$found_dir" != "X"; then
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if test "X$found_dir" != "X"; then
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dnl Found the library.
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LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
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if test "X$found_so" != "X"; then
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dnl Linking with a shared library. We attempt to hardcode its
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dnl directory into the executable's runpath, unless it's the
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dnl standard /usr/lib.
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if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/$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 Use an explicit option to hardcode DIR into the resulting
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dnl Potentially add DIR to ltrpathdirs.
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dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
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for x in $ltrpathdirs; do
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if test "X$x" = "X$found_dir"; then
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if test -z "$haveit"; then
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ltrpathdirs="$ltrpathdirs $found_dir"
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dnl The hardcoding into $LIBNAME is system dependent.
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if test "$hardcode_direct" = yes; then
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dnl Using DIR/libNAME.so during linking hardcodes DIR into the
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dnl resulting binary.
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
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if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
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dnl Use an explicit option to hardcode DIR into the resulting
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
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dnl Potentially add DIR to rpathdirs.
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dnl The rpathdirs will be appended to $LIBNAME at the end.
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for x in $rpathdirs; do
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if test "X$x" = "X$found_dir"; then
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if test -z "$haveit"; then
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rpathdirs="$rpathdirs $found_dir"
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dnl Rely on "-L$found_dir".
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dnl But don't add it if it's already contained in the LDFLAGS
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dnl or the already constructed $LIBNAME
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for x in $LDFLAGS $LIB[]NAME; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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if test "X$x" = "X-L$found_dir"; then
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if test -z "$haveit"; then
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
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if test "$hardcode_minus_L" != no; then
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dnl FIXME: Not sure whether we should use
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dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
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dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH
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dnl here, because this doesn't fit in flags passed to the
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dnl compiler. So give up. No hardcoding. This affects only
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dnl very old systems.
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dnl FIXME: Not sure whether we should use
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dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
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if test "X$found_a" != "X"; then
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dnl Linking with a static library.
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
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dnl We shouldn't come here, but anyway it's good to have a
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
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dnl Assume the include files are nearby.
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additional_includedir=
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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/"'*$,,'`
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LIB[]NAME[]_PREFIX="$basedir"
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additional_includedir="$basedir/include"
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if test "X$additional_includedir" != "X"; then
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dnl Potentially add $additional_includedir to $INCNAME.
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dnl 1. if it's the standard /usr/include,
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dnl 2. if it's /usr/local/include and we are using GCC on Linux,
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dnl 3. if it's already present in $CPPFLAGS or the already
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dnl constructed $INCNAME,
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dnl 4. if it doesn't exist as a directory.
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if test "X$additional_includedir" != "X/usr/include"; then
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if test "X$additional_includedir" = "X/usr/local/include"; then
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if test -n "$GCC"; then
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linux* | gnu* | k*bsd*-gnu) haveit=yes;;
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if test -z "$haveit"; then
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for x in $CPPFLAGS $INC[]NAME; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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if test "X$x" = "X-I$additional_includedir"; then
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if test -z "$haveit"; then
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if test -d "$additional_includedir"; then
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dnl Really add $additional_includedir to $INCNAME.
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INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
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dnl Look for dependencies.
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if test -n "$found_la"; then
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dnl Read the .la file. It defines the variables
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dnl dlname, library_names, old_library, dependency_libs, current,
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dnl age, revision, installed, dlopen, dlpreopen, libdir.
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save_libdir="$libdir"
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*/* | *\\*) . "$found_la" ;;
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*) . "./$found_la" ;;
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libdir="$save_libdir"
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dnl We use only dependency_libs.
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for dep in $dependency_libs; do
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additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
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dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
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dnl 1. if it's the standard /usr/lib,
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dnl 2. if it's /usr/local/lib and we are using GCC on Linux,
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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/$acl_libdirstem"; then
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if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
432
if test -n "$GCC"; then
434
linux* | gnu* | k*bsd*-gnu) haveit=yes;;
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if test -z "$haveit"; then
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for x in $LDFLAGS $LIB[]NAME; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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if test "X$x" = "X-L$additional_libdir"; then
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if test -z "$haveit"; then
448
if test -d "$additional_libdir"; then
449
dnl Really add $additional_libdir to $LIBNAME.
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LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
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for x in $LDFLAGS $LTLIB[]NAME; do
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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if test "X$x" = "X-L$additional_libdir"; then
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if test -z "$haveit"; then
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if test -d "$additional_libdir"; then
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dnl Really add $additional_libdir to $LTLIBNAME.
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LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
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dir=`echo "X$dep" | sed -e 's/^X-R//'`
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if test "$enable_rpath" != no; then
473
dnl Potentially add DIR to rpathdirs.
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dnl The rpathdirs will be appended to $LIBNAME at the end.
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for x in $rpathdirs; do
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if test "X$x" = "X$dir"; then
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if test -z "$haveit"; then
483
rpathdirs="$rpathdirs $dir"
485
dnl Potentially add DIR to ltrpathdirs.
486
dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
488
for x in $ltrpathdirs; do
489
if test "X$x" = "X$dir"; then
494
if test -z "$haveit"; then
495
ltrpathdirs="$ltrpathdirs $dir"
500
dnl Handle this in the next round.
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names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
504
dnl Handle this in the next round. Throw away the .la's
505
dnl directory; it is already contained in a preceding -L
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names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
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dnl Most likely an immediate library name.
511
LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
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LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
518
dnl Didn't find the library; assume it is in the system directories
519
dnl known to the linker and runtime loader. (All the system
520
dnl directories known to the linker should also be known to the
521
dnl runtime loader, otherwise the system is severely misconfigured.)
522
LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
523
LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
529
if test "X$rpathdirs" != "X"; then
530
if test -n "$hardcode_libdir_separator"; then
531
dnl Weird platform: only the last -rpath option counts, the user must
532
dnl pass all path elements in one option. We can arrange that for a
533
dnl single library, but not when more than one $LIBNAMEs are used.
535
for found_dir in $rpathdirs; do
536
alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
538
dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl.
539
acl_save_libdir="$libdir"
541
eval flag=\"$hardcode_libdir_flag_spec\"
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libdir="$acl_save_libdir"
543
LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
545
dnl The -rpath options are cumulative.
546
for found_dir in $rpathdirs; do
547
acl_save_libdir="$libdir"
549
eval flag=\"$hardcode_libdir_flag_spec\"
550
libdir="$acl_save_libdir"
551
LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
555
if test "X$ltrpathdirs" != "X"; then
556
dnl When using libtool, the option that works for both libraries and
557
dnl executables is -R. The -R options are cumulative.
558
for found_dir in $ltrpathdirs; do
559
LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
564
dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
565
dnl unless already present in VAR.
566
dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
567
dnl contains two or three consecutive elements that belong together.
568
AC_DEFUN([AC_LIB_APPENDTOVAR],
570
for element in [$2]; do
573
AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
574
if test "X$x" = "X$element"; then
579
if test -z "$haveit"; then
580
[$1]="${[$1]}${[$1]:+ }$element"
585
dnl For those cases where a variable contains several -L and -l options
586
dnl referring to unknown libraries and directories, this macro determines the
587
dnl necessary additional linker options for the runtime path.
588
dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
589
dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
590
dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
591
dnl otherwise linking without libtool is assumed.
592
AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
594
AC_REQUIRE([AC_LIB_RPATH])
595
AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
597
if test "$enable_rpath" != no; then
598
if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
599
dnl Use an explicit option to hardcode directories into the resulting
604
if test -n "$next"; then
606
dnl No need to hardcode the standard /usr/lib.
607
if test "X$dir" != "X/usr/$acl_libdirstem"; then
608
rpathdirs="$rpathdirs $dir"
614
-L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
615
dnl No need to hardcode the standard /usr/lib.
616
if test "X$dir" != "X/usr/$acl_libdirstem"; then
617
rpathdirs="$rpathdirs $dir"
624
if test "X$rpathdirs" != "X"; then
625
if test -n ""$3""; then
626
dnl libtool is used for linking. Use -R options.
627
for dir in $rpathdirs; do
628
$1="${$1}${$1:+ }-R$dir"
631
dnl The linker is used for linking directly.
632
if test -n "$hardcode_libdir_separator"; then
633
dnl Weird platform: only the last -rpath option counts, the user
634
dnl must pass all path elements in one option.
636
for dir in $rpathdirs; do
637
alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$dir"
639
acl_save_libdir="$libdir"
641
eval flag=\"$hardcode_libdir_flag_spec\"
642
libdir="$acl_save_libdir"
645
dnl The -rpath options are cumulative.
646
for dir in $rpathdirs; do
647
acl_save_libdir="$libdir"
649
eval flag=\"$hardcode_libdir_flag_spec\"
650
libdir="$acl_save_libdir"
651
$1="${$1}${$1:+ }$flag"