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_HEADER(config.h)
27 dnl We need the following definitions because AC_PROG_LIBTOOL relies on them
29 dnl 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=$LD
39 dnl Default to --enable-multilib
40 AC_ARG_ENABLE(multilib,
41 [ --enable-multilib build hella library versions (default)],
42 [case "${enableval}" in
45 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
46 esac], [multilib=yes])dnl
48 # When building with srcdir == objdir, links to the source files will
49 # be created in directories within the target_subdir. We have to
50 # adjust toplevel_srcdir accordingly, so that configure finds
51 # install-sh and other auxiliary files that live in the top-level
53 if test "${srcdir}" = "."; then
54 if test -z "${with_target_subdir}"; then
57 if test "${with_target_subdir}" != "."; then
58 toprel="${with_multisrctop}../.."
60 toprel="${with_multisrctop}.."
66 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
67 toplevel_srcdir=\${top_srcdir}/$toprel
68 AC_SUBST(toplevel_srcdir)
71 _GCC_TOPLEV_NONCANONICAL_TARGET
72 AC_SUBST(target_noncanonical)
74 # Export build and source directories.
75 # These need to be absolute paths, yet at the same time need to
76 # canonicalize only relative paths, because then amd will not unmount
77 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
78 glibcpp_builddir=`${PWDCMD-pwd}`
80 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
81 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
83 AC_SUBST(glibcpp_builddir)
84 AC_SUBST(glibcpp_srcdir)
86 # We use these options to decide which functions to include.
87 AC_ARG_WITH(target-subdir,
88 [ --with-target-subdir=SUBDIR
89 configuring in a subdirectory])
90 AC_ARG_WITH(cross-host,
91 [ --with-cross-host=HOST configuring with a cross compiler])
93 # Never versions of autoconf add an underscore to these functions.
94 # Prevent future problems ...
95 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
96 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
97 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
98 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
102 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
103 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
104 # are probably using a cross compiler, which will not be able to fully
105 # link an executable. This should really be fixed in autoconf
108 AC_DEFUN(LIB_AC_PROG_CC,
109 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
110 dnl Fool anybody using AC_PROG_CC.
111 AC_PROVIDE([AC_PROG_CC])
112 AC_CHECK_PROG(CC, gcc, gcc)
113 if test -z "$CC"; then
114 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
115 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
120 if test $ac_cv_prog_gcc = yes; then
122 dnl Check whether -g works, even if CFLAGS is set, in case the package
123 dnl plays around with CFLAGS (such as to build both debugging and
124 dnl normal versions of a library), tasteless as that idea is.
125 ac_test_CFLAGS="${CFLAGS+set}"
126 ac_save_CFLAGS="$CFLAGS"
129 if test "$ac_test_CFLAGS" = set; then
130 CFLAGS="$ac_save_CFLAGS"
131 elif test $ac_cv_prog_cc_g = yes; then
138 test "${CFLAGS+set}" = set || CFLAGS="-g"
144 AC_CHECK_TOOL(AS, as)
145 AC_CHECK_TOOL(AR, ar)
146 AC_CHECK_TOOL(RANLIB, ranlib, :)
150 # Process the option "--enable-version-specific-runtime-libs"
151 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
152 AC_ARG_ENABLE(version-specific-runtime-libs,
153 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
154 [case "$enableval" in
155 yes) version_specific_libs=yes ;;
156 no) version_specific_libs=no ;;
157 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
159 [version_specific_libs=no])
160 # Option set, now we can test it.
161 AC_MSG_RESULT($version_specific_libs)
163 gcc_version_trigger=${srcdir}/../gcc/version.c
164 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
165 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
166 AC_SUBST(gcc_version)
167 AC_SUBST(gcc_version_trigger)
169 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
170 case ${version_specific_libs} in
172 # Need the gcc compiler version to know where to install libraries
173 # and header files if --enable-version-specific-runtime-libs option
175 glibcpp_toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
176 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
179 if test -n "$with_cross_host" &&
180 test x"$with_cross_host" != x"no"; then
181 glibcpp_toolexecdir='$(exec_prefix)/$(target_noncanonical)'
182 glibcpp_toolexeclibdir='$(toolexecdir)/lib'
184 # Install a library built with a cross compiler in tooldir, not libdir.
185 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
186 glibcpp_toolexeclibdir='$(libdir)'
188 multi_os_directory=`$CC -print-multi-os-directory`
189 case $multi_os_directory in
190 .) ;; # Avoid trailing /.
191 *) glibcpp_toolexeclibdir=$glibcpp_toolexeclibdir/$multi_os_directory ;;
195 AC_SUBST(glibcpp_toolexecdir)
196 AC_SUBST(glibcpp_toolexeclibdir)
198 glibcpp_prefixdir=${prefix}
199 AC_SUBST(glibcpp_prefixdir)
201 dnl Checks for programs.
203 # Disable shared libs by default
205 # Enable Win32 DLL on MS Windows - FIXME
212 dnl Checks for header files.
213 # Sanity check for the cross-compilation case:
214 AC_CHECK_HEADER(stdio.h,:,
215 [AC_MSG_ERROR([Can't find stdio.h.
216 You must have a usable C system for the target already installed, at least
217 including headers and, preferably, the library, before you can configure
218 the Objective C runtime system. If necessary, install gcc now with
219 \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
223 AC_CHECK_HEADERS(sched.h)
225 # Determine CFLAGS for gthread.
227 AC_CACHE_CHECK([for gthread cflags],objc_cv_gthread_flags,
228 [if test -f "$r"/gcc/Makefile
230 objc_cv_gthread_flags=`grep \^GTHREAD_FLAGS "$r"/gcc/Makefile | awk -F= '{ print $2 }'`
232 AC_MSG_ERROR([not found])
234 GTHREAD_FLAGS=$objc_cv_gthread_flags
235 AC_SUBST(GTHREAD_FLAGS)
237 AC_ARG_ENABLE(objc-gc,
238 [ --enable-objc-gc enable the use of Boehm's garbage collector with
239 the GNU Objective-C runtime.],
240 if [[[ x$enable_objc_gc = xno ]]]; then
243 OBJC_BOEHM_GC=libobjc_gc.la
246 AC_SUBST(OBJC_BOEHM_GC)
249 # We need multilib support, but only if configuring for the target.
251 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
252 if test -n "$CONFIG_FILES"; then
253 if test -n "${with_target_subdir}"; then
254 # FIXME: We shouldn't need to set ac_file
256 LD="${ORIGINAL_LD_FOR_MULTILIBS}"
257 . ${toplevel_srcdir}/config-ml.in
263 with_target_subdir=${with_target_subdir}
264 with_multisubdir=${with_multisubdir}
265 ac_configure_args="--enable-multilib ${ac_configure_args}"
266 toplevel_srcdir=${toplevel_srcdir}
267 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
268 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"