1##                                                          -*- Autoconf -*-
2# Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2008
3# Free Software Foundation, Inc.
4#
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.
8
9# serial 6
10
11# AM_ENABLE_MULTILIB([MAKEFILE], [REL-TO-TOP-SRCDIR])
12# ---------------------------------------------------
13# Add --enable-multilib to configure.
14AC_DEFUN([AM_ENABLE_MULTILIB],
15[# Default to --enable-multilib
16AC_ARG_ENABLE(multilib,
17[  --enable-multilib       build many library versions (default)],
18[case "$enableval" in
19  yes) multilib=yes ;;
20  no)  multilib=no ;;
21  *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
22 esac],
23	      [multilib=yes])
24
25# We may get other options which we leave undocumented:
26# --with-target-subdir, --with-multisrctop, --with-multisubdir
27# See config-ml.in if you want the gory details.
28
29if test "$srcdir" = "."; then
30  if test "$with_target_subdir" != "."; then
31    multi_basedir="$srcdir/$with_multisrctop../$2"
32  else
33    multi_basedir="$srcdir/$with_multisrctop$2"
34  fi
35else
36  multi_basedir="$srcdir/$2"
37fi
38AC_SUBST(multi_basedir)
39
40# Even if the default multilib is not a cross compilation,
41# it may be that some of the other multilibs are.
42if test $cross_compiling = no && test $multilib = yes \
43   && test "x${with_multisubdir}" != x ; then
44   cross_compiling=maybe
45fi
46
47AC_OUTPUT_COMMANDS([
48# Only add multilib support code if we just rebuilt the top-level
49# Makefile.
50case " $CONFIG_FILES " in
51 *" ]m4_default([$1],Makefile)[ "*)
52   ac_file=]m4_default([$1],Makefile)[ . ${multi_basedir}/config-ml.in
53   ;;
54esac],
55		   [
56srcdir="$srcdir"
57host="$host"
58target="$target"
59with_multisubdir="$with_multisubdir"
60with_multisrctop="$with_multisrctop"
61with_target_subdir="$with_target_subdir"
62ac_configure_args="${multilib_arg} ${ac_configure_args}"
63multi_basedir="$multi_basedir"
64CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
65CC="$CC"
66CXX="$CXX"
67GFORTRAN="$GFORTRAN"
68GDC="$GDC"])])dnl
69