2 # Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2008
3 # Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
11 # AM_ENABLE_MULTILIB([MAKEFILE], [REL-TO-TOP-SRCDIR])
12 # ---------------------------------------------------
13 # Add --enable-multilib to configure.
14 AC_DEFUN([AM_ENABLE_MULTILIB],
15 [# Default to --enable-multilib
16 AC_ARG_ENABLE(multilib,
17 [ --enable-multilib build many library versions (default)],
21 *) AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
25 # We may get other options which we leave undocumented:
26 # --with-target-subdir, --with-multisrctop, --with-multisubdir
27 # See config-ml.in if you want the gory details.
29 if test "$srcdir" = "."; then
30 if test "$with_target_subdir" != "."; then
31 multi_basedir="$srcdir/$with_multisrctop../$2"
33 multi_basedir="$srcdir/$with_multisrctop$2"
36 multi_basedir="$srcdir/$2"
38 AC_SUBST(multi_basedir)
40 # Even if the default multilib is not a cross compilation,
41 # it may be that some of the other multilibs are.
42 if test $cross_compiling = no && test $multilib = yes \
43 && test "x${with_multisubdir}" != x ; then
48 # Only add multilib support code if we just rebuilt the top-level
50 case " $CONFIG_FILES " in
51 *" ]m4_default([$1],Makefile)[ "*)
52 ac_file=]m4_default([$1],Makefile)[ . ${multi_basedir}/config-ml.in
59 with_multisubdir="$with_multisubdir"
60 with_multisrctop="$with_multisrctop"
61 with_target_subdir="$with_target_subdir"
62 ac_configure_args="${multilib_arg} ${ac_configure_args}"
63 multi_basedir="$multi_basedir"
64 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}