2 # Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2011
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],
19 [build many library versions (default)])],
23 *) AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
27 # We may get other options which we leave undocumented:
28 # --with-target-subdir, --with-multisrctop, --with-multisubdir
29 # See config-ml.in if you want the gory details.
31 if test "$srcdir" = "."; then
32 if test "$with_target_subdir" != "."; then
33 multi_basedir="$srcdir/$with_multisrctop../$2"
35 multi_basedir="$srcdir/$with_multisrctop$2"
38 multi_basedir="$srcdir/$2"
40 AC_SUBST([multi_basedir])
42 # Even if the default multilib is not a cross compilation,
43 # it may be that some of the other multilibs are.
44 if test $cross_compiling = no && test $multilib = yes \
45 && test "x${with_multisubdir}" != x ; then
50 # Only add multilib support code if we just rebuilt the top-level
52 case " $CONFIG_FILES " in
53 *" ]m4_default([$1],Makefile)[ "*)
54 ac_file=]m4_default([$1],Makefile)[ . ${multi_basedir}/config-ml.in
61 with_multisubdir="$with_multisubdir"
62 with_multisrctop="$with_multisrctop"
63 with_target_subdir="$with_target_subdir"
64 ac_configure_args="${multilib_arg} ${ac_configure_args}"
65 multi_basedir="$multi_basedir"
66 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}