1 # Process this file with autoconf to produce a configure script.
2 # Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
3 # Free Software Foundation, Inc.
4 # Originally contributed by Dave Love (d.love@dl.ac.uk).
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify
9 #it under the terms of the GNU General Public License as published by
10 #the Free Software Foundation; either version 2, or (at your option)
13 #GCC is distributed in the hope that it will be useful,
14 #but WITHOUT ANY WARRANTY; without even the implied warranty of
15 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 #GNU General Public License for more details.
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING. If not, write to
20 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 AC_CONFIG_SRCDIR([objc/objc.h])
27 # We need the following definitions because AC_PROG_LIBTOOL relies on them
29 # Version is pulled out to make it a bit easier to change using sed.
33 # This works around the fact that libtool configuration may change LD
34 # for this particular configuration, but some shells, instead of
35 # keeping the changes in LD private, export them just because LD is
37 ORIGINAL_LD_FOR_MULTILIBS=$LD
43 # Default to --enable-multilib
44 AC_ARG_ENABLE(multilib,
45 [ --enable-multilib build hella library versions (default)],
46 [case "${enableval}" in
49 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
53 # We use these options to decide which functions to include.
54 AC_ARG_WITH(target-subdir,
55 [ --with-target-subdir=SUBDIR
56 configuring in a subdirectory])
57 AC_ARG_WITH(cross-host,
58 [ --with-cross-host=HOST configuring with a cross compiler])
60 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
61 AC_ARG_ENABLE(version-specific-runtime-libs,
62 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
64 yes) version_specific_libs=yes ;;
65 no) version_specific_libs=no ;;
66 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
68 [version_specific_libs=no])
69 AC_MSG_RESULT($version_specific_libs)
71 AC_ARG_ENABLE(objc-gc,
72 [ --enable-objc-gc enable the use of Boehm's garbage collector with
73 the GNU Objective-C runtime.],
74 [case $enable_objc_gc in
75 no) OBJC_BOEHM_GC='' ;;
76 *) OBJC_BOEHM_GC=libobjc_gc.la ;;
79 AC_SUBST(OBJC_BOEHM_GC)
85 # When building with srcdir == objdir, links to the source files will
86 # be created in directories within the target_subdir. We have to
87 # adjust toplevel_srcdir accordingly, so that configure finds
88 # install-sh and other auxiliary files that live in the top-level
90 if test "${srcdir}" = "."; then
91 if test -z "${with_target_subdir}"; then
94 if test "${with_target_subdir}" != "."; then
95 toprel="${with_multisrctop}../.."
97 toprel="${with_multisrctop}.."
103 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
104 toplevel_srcdir=\${srcdir}/$toprel
105 AC_SUBST(toplevel_srcdir)
108 _GCC_TOPLEV_NONCANONICAL_TARGET
109 AC_SUBST(target_noncanonical)
111 # Export source directory.
112 # These need to be absolute paths, yet at the same time need to
113 # canonicalize only relative paths, because then amd will not unmount
114 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
116 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
117 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
119 AC_SUBST(glibcpp_srcdir)
121 # Process the option "--enable-version-specific-runtime-libs"
122 gcc_version_trigger=${srcdir}/../gcc/version.c
123 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
124 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
125 AC_SUBST(gcc_version)
127 # Calculate toolexeclibdir
128 case ${version_specific_libs} in
130 # Need the gcc compiler version to know where to install libraries
131 # and header files if --enable-version-specific-runtime-libs option
133 toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
136 if test -n "$with_cross_host" &&
137 test x"$with_cross_host" != x"no"; then
138 # Install a library built with a cross compiler in tooldir, not libdir.
139 toolexeclibdir='$(toolexecdir)/lib'
141 toolexeclibdir='$(libdir)'
143 multi_os_directory=`$CC -print-multi-os-directory`
144 case $multi_os_directory in
145 .) ;; # Avoid trailing /.
146 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
150 AC_SUBST(toolexeclibdir)
159 AC_CHECK_TOOL(AS, as)
160 AC_CHECK_TOOL(AR, ar)
161 AC_CHECK_TOOL(RANLIB, ranlib, :)
164 # Disable shared libs by default
166 # Enable Win32 DLL on MS Windows - FIXME
177 # Sanity check for the cross-compilation case:
178 AC_CHECK_HEADER(stdio.h,:,
179 [AC_MSG_ERROR([Can't find stdio.h.
180 You must have a usable C system for the target already installed, at least
181 including headers and, preferably, the library, before you can configure
182 the Objective C runtime system. If necessary, install gcc now with
183 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
187 AC_CHECK_HEADERS(sched.h)
193 # Determine CFLAGS for gthread.
194 # FIXME: the current implementation is dependent on the 'r' variable
195 # passed down from the top level
196 AC_CACHE_CHECK([for gthread cflags],objc_cv_gthread_flags,
197 [if test -f "$r"/gcc/Makefile
199 objc_cv_gthread_flags=`grep \^GTHREAD_FLAGS "$r"/gcc/Makefile | awk -F= '{ print $2 }'`
201 AC_MSG_ERROR([not found])
203 GTHREAD_FLAGS=$objc_cv_gthread_flags
204 AC_SUBST(GTHREAD_FLAGS)
210 AC_CONFIG_FILES([Makefile])
212 AC_CONFIG_COMMANDS([default],
213 [[if test -n "$CONFIG_FILES"; then
214 if test -n "${with_target_subdir}"; then
215 # FIXME: We shouldn't need to set ac_file
217 LD="${ORIGINAL_LD_FOR_MULTILIBS}"
218 . ${toplevel_srcdir}/config-ml.in
224 with_target_subdir=${with_target_subdir}
225 with_multisubdir=${with_multisubdir}
226 ac_configure_args="--enable-multilib ${ac_configure_args}"
227 toplevel_srcdir=${toplevel_srcdir}
228 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
229 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"