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265ab036 | 1 | # Process this file with autoconf to produce a configure script. |
9c4e05bc | 2 | # Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004 |
6bc9506f | 3 | # 2005, 2006, 2009 Free Software Foundation, Inc. |
9c4e05bc | 4 | # Originally contributed by Dave Love (d.love@dl.ac.uk). |
265ab036 | 5 | # |
9c4e05bc | 6 | #This file is part of GCC. |
265ab036 | 7 | # |
9c4e05bc | 8 | #GCC is free software; you can redistribute it and/or modify |
265ab036 | 9 | #it under the terms of the GNU General Public License as published by |
6bc9506f | 10 | #the Free Software Foundation; either version 3, or (at your option) |
265ab036 | 11 | #any later version. |
12 | # | |
9c4e05bc | 13 | #GCC is distributed in the hope that it will be useful, |
265ab036 | 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. | |
17 | # | |
18 | #You should have received a copy of the GNU General Public License | |
6bc9506f | 19 | #along with GCC; see the file COPYING3. If not see |
20 | #<http://www.gnu.org/licenses/>. | |
265ab036 | 21 | |
81a71e2b | 22 | AC_PREREQ(2.64) |
a4761b96 | 23 | AC_INIT(package-unused, version-unused,, libobjc) |
0404be24 | 24 | AC_CONFIG_SRCDIR([objc/objc.h]) |
c1eb9e31 | 25 | GCC_TOPLEV_SUBDIRS |
265ab036 | 26 | |
0404be24 | 27 | # We need the following definitions because AC_PROG_LIBTOOL relies on them |
62fa4357 | 28 | PACKAGE=libobjc |
0404be24 | 29 | # Version is pulled out to make it a bit easier to change using sed. |
5ca19477 | 30 | VERSION=3:0:0 |
62fa4357 | 31 | AC_SUBST(VERSION) |
32 | ||
0b045cf7 | 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 | |
36 | # exported. | |
37 | ORIGINAL_LD_FOR_MULTILIBS=$LD | |
38 | ||
0404be24 | 39 | # ------- |
40 | # Options | |
41 | # ------- | |
42 | ||
0404be24 | 43 | # We use these options to decide which functions to include. |
44 | AC_ARG_WITH(target-subdir, | |
45 | [ --with-target-subdir=SUBDIR | |
46 | configuring in a subdirectory]) | |
47 | AC_ARG_WITH(cross-host, | |
48 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
49 | ||
50 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
51 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
52 | [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
53 | [case "$enableval" in | |
54 | yes) version_specific_libs=yes ;; | |
55 | no) version_specific_libs=no ;; | |
56 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
57 | esac], | |
58 | [version_specific_libs=no]) | |
59 | AC_MSG_RESULT($version_specific_libs) | |
60 | ||
61 | AC_ARG_ENABLE(objc-gc, | |
62 | [ --enable-objc-gc enable the use of Boehm's garbage collector with | |
63 | the GNU Objective-C runtime.], | |
64 | [case $enable_objc_gc in | |
e23e7a91 | 65 | no) |
66 | OBJC_BOEHM_GC='' | |
67 | OBJC_BOEHM_GC_INCLUDES='' | |
68 | ;; | |
69 | *) | |
70 | OBJC_BOEHM_GC=libobjc_gc.la | |
71 | OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include' | |
72 | ;; | |
0404be24 | 73 | esac], |
e23e7a91 | 74 | [OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES='']) |
0404be24 | 75 | AC_SUBST(OBJC_BOEHM_GC) |
e23e7a91 | 76 | AC_SUBST(OBJC_BOEHM_GC_INCLUDES) |
0404be24 | 77 | |
78 | # ----------- | |
79 | # Directories | |
80 | # ----------- | |
9c4e05bc | 81 | |
ff434425 | 82 | # Find the rest of the source tree framework. |
83 | AM_ENABLE_MULTILIB(, ..) | |
8400ab1c | 84 | |
6ed57656 | 85 | AC_CANONICAL_SYSTEM |
f251b3df | 86 | ACX_NONCANONICAL_TARGET |
9c4e05bc | 87 | |
5af8565b | 88 | # Export source directory. |
9c4e05bc | 89 | # These need to be absolute paths, yet at the same time need to |
90 | # canonicalize only relative paths, because then amd will not unmount | |
91 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
9c4e05bc | 92 | case $srcdir in |
0404be24 | 93 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; |
94 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
9c4e05bc | 95 | esac |
9c4e05bc | 96 | AC_SUBST(glibcpp_srcdir) |
97 | ||
7fc7cb73 | 98 | # Calculate toolexeclibdir |
85fe910a | 99 | # Also toolexecdir, though it's only used in toolexeclibdir |
9c4e05bc | 100 | case ${version_specific_libs} in |
101 | yes) | |
102 | # Need the gcc compiler version to know where to install libraries | |
103 | # and header files if --enable-version-specific-runtime-libs option | |
104 | # is selected. | |
85fe910a | 105 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' |
32ee7eb8 | 106 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
9c4e05bc | 107 | ;; |
108 | no) | |
109 | if test -n "$with_cross_host" && | |
110 | test x"$with_cross_host" != x"no"; then | |
9c4e05bc | 111 | # Install a library built with a cross compiler in tooldir, not libdir. |
85fe910a | 112 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' |
7fc7cb73 | 113 | toolexeclibdir='$(toolexecdir)/lib' |
114 | else | |
85fe910a | 115 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' |
7fc7cb73 | 116 | toolexeclibdir='$(libdir)' |
9c4e05bc | 117 | fi |
118 | multi_os_directory=`$CC -print-multi-os-directory` | |
119 | case $multi_os_directory in | |
120 | .) ;; # Avoid trailing /. | |
7fc7cb73 | 121 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
9c4e05bc | 122 | esac |
123 | ;; | |
124 | esac | |
85fe910a | 125 | AC_SUBST(toolexecdir) |
7fc7cb73 | 126 | AC_SUBST(toolexeclibdir) |
9c4e05bc | 127 | |
166e6519 | 128 | # Figure out if we want to name the include directory and the |
129 | # library name changes differently. | |
ce716239 | 130 | includedirname=include |
f90c9f0e | 131 | libsuffix= |
166e6519 | 132 | case "${host}" in |
133 | *-darwin*) | |
134 | # Darwin is the only target so far that needs a different include directory. | |
ce716239 | 135 | includedirname=include-gnu-runtime |
6d7301dc | 136 | libsuffix=-gnu |
166e6519 | 137 | ;; |
138 | esac | |
ce716239 | 139 | AC_SUBST(includedirname) |
1e0545b2 | 140 | AC_SUBST(libsuffix) |
166e6519 | 141 | |
e7d4d902 | 142 | AC_CONFIG_HEADERS(config.h) |
143 | ||
0404be24 | 144 | # -------- |
145 | # Programs | |
146 | # -------- | |
147 | ||
148 | GCC_NO_EXECUTABLES | |
b5bed5a5 | 149 | |
150 | # We must force CC to /not/ be a precious variable; otherwise | |
151 | # the wrong, non-multilib-adjusted value will be used in multilibs. | |
152 | # As a side effect, we have to subst CFLAGS ourselves. | |
153 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
154 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
0404be24 | 155 | AC_PROG_CC |
9abe4a66 | 156 | m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
b5bed5a5 | 157 | |
a16ff609 | 158 | # extra LD Flags which are required for targets |
8c35d268 | 159 | ACX_LT_HOST_FLAGS |
a16ff609 | 160 | case "${host}" in |
161 | *-darwin*) | |
162 | # Darwin needs -single_module when linking libobjc | |
8c35d268 | 163 | extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module' |
a16ff609 | 164 | ;; |
41f83444 | 165 | *-cygwin*|*-mingw*) |
166 | # Tell libtool to build DLLs on Windows | |
8c35d268 | 167 | extra_ldflags_libobjc='$(lt_host_flags)' |
41f83444 | 168 | ;; |
a16ff609 | 169 | esac |
170 | AC_SUBST(extra_ldflags_libobjc) | |
171 | ||
b5bed5a5 | 172 | AC_SUBST(CFLAGS) |
0404be24 | 173 | |
174 | AC_CHECK_TOOL(AS, as) | |
175 | AC_CHECK_TOOL(AR, ar) | |
176 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
177 | AC_PROG_INSTALL | |
ce7c4a11 | 178 | |
3c72aa9c | 179 | AM_MAINTAINER_MODE |
180 | ||
9c4e05bc | 181 | # Enable Win32 DLL on MS Windows - FIXME |
182 | AC_LIBTOOL_WIN32_DLL | |
ce7c4a11 | 183 | |
6ed57656 | 184 | AC_PROG_LIBTOOL |
265ab036 | 185 | |
3c72aa9c | 186 | AM_PROG_CC_C_O |
187 | ||
6ed57656 | 188 | AC_PROG_MAKE_SET |
265ab036 | 189 | |
0404be24 | 190 | # ------- |
191 | # Headers | |
192 | # ------- | |
193 | ||
265ab036 | 194 | # Sanity check for the cross-compilation case: |
195 | AC_CHECK_HEADER(stdio.h,:, | |
196 | [AC_MSG_ERROR([Can't find stdio.h. | |
197 | You must have a usable C system for the target already installed, at least | |
198 | including headers and, preferably, the library, before you can configure | |
199 | the Objective C runtime system. If necessary, install gcc now with | |
200 | \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])]) | |
201 | ||
202 | AC_HEADER_STDC | |
203 | ||
284f820a | 204 | AC_CHECK_HEADERS(sched.h) |
205 | ||
0404be24 | 206 | # ----------- |
207 | # Miscellanea | |
208 | # ----------- | |
209 | ||
576007bc | 210 | AC_MSG_CHECKING([for thread model used by GCC]) |
211 | target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
212 | AC_MSG_RESULT([$target_thread_file]) | |
213 | ||
214 | if test $target_thread_file != single; then | |
215 | AC_DEFINE(HAVE_GTHR_DEFAULT, 1, | |
216 | [Define if the compiler has a thread header that is non single.]) | |
217 | fi | |
218 | ||
a2a8dcb1 | 219 | # Check if we have thread-local storage |
220 | GCC_CHECK_TLS | |
265ab036 | 221 | |
e7d4d902 | 222 | AC_MSG_CHECKING([for exception model to use]) |
223 | AC_LANG_PUSH(C) | |
224 | AC_ARG_ENABLE(sjlj-exceptions, | |
225 | AS_HELP_STRING([--enable-sjlj-exceptions], | |
226 | [force use of builtin_setjmp for exceptions]), | |
227 | [:], | |
228 | [dnl Botheration. Now we've got to detect the exception model. | |
229 | dnl Link tests against libgcc.a are problematic since -- at least | |
230 | dnl as of this writing -- we've not been given proper -L bits for | |
231 | dnl single-tree newlib and libgloss. | |
232 | dnl | |
233 | dnl This is what AC_TRY_COMPILE would do if it didn't delete the | |
234 | dnl conftest files before we got a change to grep them first. | |
235 | cat > conftest.$ac_ext << EOF | |
236 | [#]line __oline__ "configure" | |
237 | @interface Frob | |
238 | @end | |
239 | @implementation Frob | |
240 | @end | |
241 | int proc(); | |
242 | int foo() | |
243 | { | |
244 | @try { | |
245 | return proc(); | |
246 | } | |
247 | @catch (Frob* ex) { | |
248 | return 0; | |
249 | } | |
250 | } | |
251 | EOF | |
252 | old_CFLAGS="$CFLAGS" | |
253 | dnl work around that we don't have Objective-C support in autoconf | |
254 | CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S" | |
255 | if AC_TRY_EVAL(ac_compile); then | |
256 | if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then | |
257 | enable_sjlj_exceptions=yes | |
258 | elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then | |
259 | enable_sjlj_exceptions=no | |
260 | fi | |
261 | fi | |
262 | CFLAGS="$old_CFLAGS" | |
263 | rm -f conftest*]) | |
264 | if test x$enable_sjlj_exceptions = xyes; then | |
265 | AC_DEFINE(SJLJ_EXCEPTIONS, 1, | |
266 | [Define if the compiler is configured for setjmp/longjmp exceptions.]) | |
267 | ac_exception_model_name=sjlj | |
268 | elif test x$enable_sjlj_exceptions = xno; then | |
269 | ac_exception_model_name="call frame" | |
270 | else | |
271 | AC_MSG_ERROR([unable to detect exception model]) | |
272 | fi | |
273 | AC_LANG_POP(C) | |
274 | AC_MSG_RESULT($ac_exception_model_name) | |
275 | ||
0404be24 | 276 | # ------ |
277 | # Output | |
278 | # ------ | |
265ab036 | 279 | |
daf4a08b | 280 | if test ${multilib} = yes; then |
281 | multilib_arg="--enable-multilib" | |
282 | else | |
283 | multilib_arg= | |
284 | fi | |
0404be24 | 285 | |
daf4a08b | 286 | AC_CONFIG_FILES([Makefile]) |
0404be24 | 287 | AC_OUTPUT |