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bce1b489 | 1 | # Process this file with autoconf to produce a configure script. |
9c01f395 | 2 | # Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004 |
b98b952f | 3 | # 2005, 2006, 2009, 2011 Free Software Foundation, Inc. |
9c01f395 | 4 | # Originally contributed by Dave Love (d.love@dl.ac.uk). |
bce1b489 | 5 | # |
9c01f395 | 6 | #This file is part of GCC. |
bce1b489 | 7 | # |
9c01f395 | 8 | #GCC is free software; you can redistribute it and/or modify |
bce1b489 | 9 | #it under the terms of the GNU General Public License as published by |
748086b7 | 10 | #the Free Software Foundation; either version 3, or (at your option) |
bce1b489 BE |
11 | #any later version. |
12 | # | |
9c01f395 | 13 | #GCC is distributed in the hope that it will be useful, |
bce1b489 BE |
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 | |
748086b7 JJ |
19 | #along with GCC; see the file COPYING3. If not see |
20 | #<http://www.gnu.org/licenses/>. | |
bce1b489 | 21 | |
df58e648 | 22 | AC_PREREQ(2.64) |
684c64bf | 23 | AC_INIT(package-unused, version-unused,, libobjc) |
252dde64 | 24 | AC_CONFIG_SRCDIR([objc/objc.h]) |
215c351a | 25 | GCC_TOPLEV_SUBDIRS |
bce1b489 | 26 | |
252dde64 | 27 | # We need the following definitions because AC_PROG_LIBTOOL relies on them |
1fcfac98 | 28 | PACKAGE=libobjc |
252dde64 | 29 | # Version is pulled out to make it a bit easier to change using sed. |
c7907a55 | 30 | VERSION=4:0:0 |
1fcfac98 NN |
31 | AC_SUBST(VERSION) |
32 | ||
6706f116 AO |
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=$LD | |
38 | ||
252dde64 NN |
39 | # ------- |
40 | # Options | |
41 | # ------- | |
42 | ||
252dde64 NN |
43 | # We use these options to decide which functions to include. |
44 | AC_ARG_WITH(target-subdir, | |
45 | [ --with-target-subdir=SUBDIR | |
46 | configuring in a subdirectory]) | |
47 | AC_ARG_WITH(cross-host, | |
48 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
49 | ||
50 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
51 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
52 | [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
53 | [case "$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 $enable_objc_gc in | |
8c3e5222 | 65 | no) |
b98b952f | 66 | OBJC_GCFLAGS='' |
8c3e5222 DA |
67 | OBJC_BOEHM_GC='' |
68 | OBJC_BOEHM_GC_INCLUDES='' | |
69 | ;; | |
70 | *) | |
b98b952f RO |
71 | OBJC_GCFLAGS='-DOBJC_WITH_GC=1' |
72 | OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la' | |
8c3e5222 | 73 | OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include' |
b98b952f RO |
74 | case "${host}" in |
75 | alpha*-dec-osf*) | |
76 | # boehm-gc headers include <pthread.h>, which needs to be compiled | |
77 | # with -pthread on Tru64 UNIX. | |
78 | OBJC_GCFLAGS="${OBJC_GCFLAGS} -pthread" | |
79 | ;; | |
80 | esac | |
8c3e5222 | 81 | ;; |
252dde64 | 82 | esac], |
b98b952f RO |
83 | [OBJC_GCFLAGS=''; OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES='']) |
84 | AC_SUBST(OBJC_GCFLAGS) | |
252dde64 | 85 | AC_SUBST(OBJC_BOEHM_GC) |
8c3e5222 | 86 | AC_SUBST(OBJC_BOEHM_GC_INCLUDES) |
252dde64 NN |
87 | |
88 | # ----------- | |
89 | # Directories | |
90 | # ----------- | |
9c01f395 | 91 | |
5b043f08 GK |
92 | # Find the rest of the source tree framework. |
93 | AM_ENABLE_MULTILIB(, ..) | |
aebb8c22 | 94 | |
b150efee | 95 | AC_CANONICAL_SYSTEM |
1506eac1 | 96 | ACX_NONCANONICAL_TARGET |
9c01f395 | 97 | |
af0c82b3 | 98 | # Export source directory. |
9c01f395 NN |
99 | # These need to be absolute paths, yet at the same time need to |
100 | # canonicalize only relative paths, because then amd will not unmount | |
101 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
9c01f395 | 102 | case $srcdir in |
252dde64 NN |
103 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; |
104 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
9c01f395 | 105 | esac |
9c01f395 NN |
106 | AC_SUBST(glibcpp_srcdir) |
107 | ||
608e1e0c | 108 | # Calculate toolexeclibdir |
a42a57cb | 109 | # Also toolexecdir, though it's only used in toolexeclibdir |
9c01f395 NN |
110 | case ${version_specific_libs} in |
111 | yes) | |
112 | # Need the gcc compiler version to know where to install libraries | |
113 | # and header files if --enable-version-specific-runtime-libs option | |
114 | # is selected. | |
a42a57cb | 115 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' |
2b37e3d5 | 116 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
9c01f395 NN |
117 | ;; |
118 | no) | |
119 | if test -n "$with_cross_host" && | |
120 | test x"$with_cross_host" != x"no"; then | |
9c01f395 | 121 | # Install a library built with a cross compiler in tooldir, not libdir. |
a42a57cb | 122 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' |
608e1e0c NN |
123 | toolexeclibdir='$(toolexecdir)/lib' |
124 | else | |
a42a57cb | 125 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' |
608e1e0c | 126 | toolexeclibdir='$(libdir)' |
9c01f395 NN |
127 | fi |
128 | multi_os_directory=`$CC -print-multi-os-directory` | |
129 | case $multi_os_directory in | |
130 | .) ;; # Avoid trailing /. | |
608e1e0c | 131 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
9c01f395 NN |
132 | esac |
133 | ;; | |
134 | esac | |
a42a57cb | 135 | AC_SUBST(toolexecdir) |
608e1e0c | 136 | AC_SUBST(toolexeclibdir) |
9c01f395 | 137 | |
ff65de76 AP |
138 | # Figure out if we want to name the include directory and the |
139 | # library name changes differently. | |
7d34a5a9 | 140 | includedirname=include |
45d5f86c | 141 | libsuffix= |
ff65de76 AP |
142 | case "${host}" in |
143 | *-darwin*) | |
144 | # Darwin is the only target so far that needs a different include directory. | |
7d34a5a9 | 145 | includedirname=include-gnu-runtime |
af333b9a | 146 | libsuffix=-gnu |
ff65de76 AP |
147 | ;; |
148 | esac | |
7d34a5a9 | 149 | AC_SUBST(includedirname) |
4620d81e | 150 | AC_SUBST(libsuffix) |
ff65de76 | 151 | |
049bc404 AP |
152 | AC_CONFIG_HEADERS(config.h) |
153 | ||
252dde64 NN |
154 | # -------- |
155 | # Programs | |
156 | # -------- | |
157 | ||
158 | GCC_NO_EXECUTABLES | |
db7f3c69 NN |
159 | |
160 | # We must force CC to /not/ be a precious variable; otherwise | |
161 | # the wrong, non-multilib-adjusted value will be used in multilibs. | |
162 | # As a side effect, we have to subst CFLAGS ourselves. | |
163 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
164 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
252dde64 | 165 | AC_PROG_CC |
1b3b24c2 | 166 | m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
db7f3c69 | 167 | |
a5a813f8 | 168 | # extra LD Flags which are required for targets |
7de6ba7a | 169 | ACX_LT_HOST_FLAGS |
a5a813f8 AP |
170 | case "${host}" in |
171 | *-darwin*) | |
172 | # Darwin needs -single_module when linking libobjc | |
7de6ba7a | 173 | extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module' |
a5a813f8 | 174 | ;; |
19222959 DK |
175 | *-cygwin*|*-mingw*) |
176 | # Tell libtool to build DLLs on Windows | |
7de6ba7a | 177 | extra_ldflags_libobjc='$(lt_host_flags)' |
19222959 | 178 | ;; |
a5a813f8 AP |
179 | esac |
180 | AC_SUBST(extra_ldflags_libobjc) | |
181 | ||
db7f3c69 | 182 | AC_SUBST(CFLAGS) |
252dde64 NN |
183 | |
184 | AC_CHECK_TOOL(AS, as) | |
185 | AC_CHECK_TOOL(AR, ar) | |
186 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
187 | AC_PROG_INSTALL | |
7c6b0e92 | 188 | |
dd365157 MS |
189 | AM_MAINTAINER_MODE |
190 | ||
9c01f395 NN |
191 | # Enable Win32 DLL on MS Windows - FIXME |
192 | AC_LIBTOOL_WIN32_DLL | |
7c6b0e92 | 193 | |
b150efee | 194 | AC_PROG_LIBTOOL |
bce1b489 | 195 | |
dd365157 MS |
196 | AM_PROG_CC_C_O |
197 | ||
b150efee | 198 | AC_PROG_MAKE_SET |
bce1b489 | 199 | |
252dde64 NN |
200 | # ------- |
201 | # Headers | |
202 | # ------- | |
203 | ||
bce1b489 BE |
204 | # Sanity check for the cross-compilation case: |
205 | AC_CHECK_HEADER(stdio.h,:, | |
206 | [AC_MSG_ERROR([Can't find stdio.h. | |
207 | You must have a usable C system for the target already installed, at least | |
208 | including headers and, preferably, the library, before you can configure | |
209 | the Objective C runtime system. If necessary, install gcc now with | |
210 | \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])]) | |
211 | ||
212 | AC_HEADER_STDC | |
213 | ||
d972a4c2 OP |
214 | AC_CHECK_HEADERS(sched.h) |
215 | ||
252dde64 NN |
216 | # ----------- |
217 | # Miscellanea | |
218 | # ----------- | |
219 | ||
6886e18e AP |
220 | AC_MSG_CHECKING([for thread model used by GCC]) |
221 | target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
222 | AC_MSG_RESULT([$target_thread_file]) | |
223 | ||
224 | if test $target_thread_file != single; then | |
225 | AC_DEFINE(HAVE_GTHR_DEFAULT, 1, | |
226 | [Define if the compiler has a thread header that is non single.]) | |
227 | fi | |
228 | ||
fd312537 NP |
229 | # Check if we have thread-local storage |
230 | GCC_CHECK_TLS | |
bce1b489 | 231 | |
049bc404 AP |
232 | AC_MSG_CHECKING([for exception model to use]) |
233 | AC_LANG_PUSH(C) | |
234 | AC_ARG_ENABLE(sjlj-exceptions, | |
235 | AS_HELP_STRING([--enable-sjlj-exceptions], | |
236 | [force use of builtin_setjmp for exceptions]), | |
237 | [:], | |
238 | [dnl Botheration. Now we've got to detect the exception model. | |
239 | dnl Link tests against libgcc.a are problematic since -- at least | |
240 | dnl as of this writing -- we've not been given proper -L bits for | |
241 | dnl single-tree newlib and libgloss. | |
242 | dnl | |
243 | dnl This is what AC_TRY_COMPILE would do if it didn't delete the | |
244 | dnl conftest files before we got a change to grep them first. | |
245 | cat > conftest.$ac_ext << EOF | |
246 | [#]line __oline__ "configure" | |
247 | @interface Frob | |
248 | @end | |
249 | @implementation Frob | |
250 | @end | |
251 | int proc(); | |
252 | int foo() | |
253 | { | |
254 | @try { | |
255 | return proc(); | |
256 | } | |
257 | @catch (Frob* ex) { | |
258 | return 0; | |
259 | } | |
260 | } | |
261 | EOF | |
262 | old_CFLAGS="$CFLAGS" | |
263 | dnl work around that we don't have Objective-C support in autoconf | |
264 | CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S" | |
265 | if AC_TRY_EVAL(ac_compile); then | |
266 | if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then | |
267 | enable_sjlj_exceptions=yes | |
268 | elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then | |
269 | enable_sjlj_exceptions=no | |
270 | fi | |
271 | fi | |
272 | CFLAGS="$old_CFLAGS" | |
273 | rm -f conftest*]) | |
274 | if test x$enable_sjlj_exceptions = xyes; then | |
275 | AC_DEFINE(SJLJ_EXCEPTIONS, 1, | |
276 | [Define if the compiler is configured for setjmp/longjmp exceptions.]) | |
277 | ac_exception_model_name=sjlj | |
278 | elif test x$enable_sjlj_exceptions = xno; then | |
279 | ac_exception_model_name="call frame" | |
280 | else | |
281 | AC_MSG_ERROR([unable to detect exception model]) | |
282 | fi | |
283 | AC_LANG_POP(C) | |
284 | AC_MSG_RESULT($ac_exception_model_name) | |
285 | ||
252dde64 NN |
286 | # ------ |
287 | # Output | |
288 | # ------ | |
bce1b489 | 289 | |
2c888488 L |
290 | if test ${multilib} = yes; then |
291 | multilib_arg="--enable-multilib" | |
292 | else | |
293 | multilib_arg= | |
294 | fi | |
252dde64 | 295 | |
2c888488 | 296 | AC_CONFIG_FILES([Makefile]) |
252dde64 | 297 | AC_OUTPUT |