1 # Process this file with autoconf to produce a configure script.
2 # Copyright (C) 1995, 1997, 1998, 1999 Free Software Foundation, Inc.
3 # Contributed by Dave Love (d.love@dl.ac.uk).
5 #This file is part of GNU Objective C.
7 #GNU Objective C is free software; you can redistribute it and/or modify
8 #it under the terms of the GNU General Public License as published by
9 #the Free Software Foundation; either version 2, or (at your option)
12 #GNU Objective C is distributed in the hope that it will be useful,
13 #but WITHOUT ANY WARRANTY; without even the implied warranty of
14 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 #GNU General Public License for more details.
17 #You should have received a copy of the GNU General Public License
18 #along with GNU Objective C; see the file COPYING. If not, write to
19 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 #AC_CONFIG_HEADER(config.h)
26 if test "${srcdir}" = "." ; then
27 if test "${with_target_subdir}" != "." ; then
28 topsrcdir=${with_multisrctop}../..
30 topsrcdir=${with_multisrctop}..
33 topsrcdir=${srcdir}/..
35 dnl This is needed for a multilibbed build in the source tree so
36 dnl that install-sh and config.sub get found.
37 AC_CONFIG_AUX_DIR($topsrcdir)
39 # We have to handle 3 cases -- native, cross and canadian cross -- and
40 # the extension returned from this macro needs to be treated as a possible
41 # scenario and not the only one.
44 # If the language specific compiler does not exist, but the "gcc" directory
45 # does, we do not build anything. Note, $r is set by the top-level Makefile.
46 # Note that when we look for the compiler, we search both with and without
47 # extension to handle cross and canadian cross builds.
50 AC_MSG_CHECKING(if compiler $compiler_name has been built)
51 AC_CACHE_VAL(objc_cv_compiler_exists,
52 [objc_cv_compiler_exists=yes
54 if test -d "$r"/gcc; then
55 if test -f "$r"/gcc/$compiler_name \
56 || test -f "$r"/gcc/$compiler_name$EXEEXT; then
59 objc_cv_compiler_exists=no
60 echo "rm -f config.cache config.log multilib.out" > skip-this-dir
65 AC_MSG_RESULT($objc_cv_compiler_exists)
66 if test x$objc_cv_compiler_exists = xno
68 rm -f Makefile conftest* confdefs* core
72 dnl Checks for programs.
73 # For ObjC we'll set CC to point at the built gcc, but this will get it into
79 if test "$RANLIB"; then :
86 dnl Checks for libraries.
88 dnl Checks for header files.
89 # Sanity check for the cross-compilation case:
90 AC_CHECK_HEADER(stdio.h,:,
91 [AC_MSG_ERROR([Can't find stdio.h.
92 You must have a usable C system for the target already installed, at least
93 including headers and, preferably, the library, before you can configure
94 the Objective C runtime system. If necessary, install gcc now with
95 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
99 # Determine the name of the GCC thread file.
101 AC_CACHE_CHECK([for thread file],objc_cv_thread_file,
102 [if test -f "$r"/gcc/Makefile
104 objc_cv_thread_file=`grep \^GCC_THREAD_FILE "$r"/gcc/Makefile | awk -F= '{ print $2 }'`
106 AC_MSG_ERROR([not found])
108 OBJC_THREAD_FILE=$objc_cv_thread_file
109 AC_SUBST(OBJC_THREAD_FILE)
111 AC_ARG_ENABLE(objc-gc,
112 [ --enable-objc-gc enable the use of Boehm's garbage collector with
113 the GNU Objective-C runtime.],
114 if [[[ x$enable_objc_gc = xno ]]]; then
117 OBJC_BOEHM_GC=libobjc_gc.a
120 AC_SUBST(OBJC_BOEHM_GC)
123 # We need multilib support, but only if configuring for the target.
125 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
126 if test -n "$CONFIG_FILES"; then
127 if test -n "${with_target_subdir}"; then
128 # FIXME: We shouldn't need to set ac_file
130 . ${topsrcdir}/config-ml.in
136 with_target_subdir=${with_target_subdir}
137 with_multisubdir=${with_multisubdir}
138 ac_configure_args="--enable-multilib ${ac_configure_args}"
139 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
140 topsrcdir=${topsrcdir}
144 dnl comment-start: "dnl "
146 dnl comment-start-skip: "\\bdnl\\b\\s *"