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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 |
3343fdd2 | 3 | # 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 BE |
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) | |
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 | |
9c01f395 | 19 | #along with GCC; see the file COPYING. If not, write to |
f9d09c43 KC |
20 | #the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
21 | #02110-1301, USA. | |
bce1b489 | 22 | |
88386050 | 23 | AC_PREREQ(2.59) |
684c64bf | 24 | AC_INIT(package-unused, version-unused,, libobjc) |
252dde64 | 25 | AC_CONFIG_SRCDIR([objc/objc.h]) |
215c351a | 26 | GCC_TOPLEV_SUBDIRS |
bce1b489 | 27 | |
252dde64 | 28 | # We need the following definitions because AC_PROG_LIBTOOL relies on them |
1fcfac98 | 29 | PACKAGE=libobjc |
252dde64 | 30 | # Version is pulled out to make it a bit easier to change using sed. |
1fcfac98 NN |
31 | VERSION=1:0:0 |
32 | AC_SUBST(VERSION) | |
33 | ||
6706f116 AO |
34 | # This works around the fact that libtool configuration may change LD |
35 | # for this particular configuration, but some shells, instead of | |
36 | # keeping the changes in LD private, export them just because LD is | |
37 | # exported. | |
38 | ORIGINAL_LD_FOR_MULTILIBS=$LD | |
39 | ||
252dde64 NN |
40 | # ------- |
41 | # Options | |
42 | # ------- | |
43 | ||
44 | # Default to --enable-multilib | |
9c01f395 NN |
45 | AC_ARG_ENABLE(multilib, |
46 | [ --enable-multilib build hella library versions (default)], | |
47 | [case "${enableval}" in | |
48 | yes) multilib=yes ;; | |
49 | no) multilib=no ;; | |
50 | *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; | |
252dde64 NN |
51 | esac], |
52 | [multilib=yes]) | |
53 | ||
54 | # We use these options to decide which functions to include. | |
55 | AC_ARG_WITH(target-subdir, | |
56 | [ --with-target-subdir=SUBDIR | |
57 | configuring in a subdirectory]) | |
58 | AC_ARG_WITH(cross-host, | |
59 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
60 | ||
61 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
62 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
63 | [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
64 | [case "$enableval" in | |
65 | yes) version_specific_libs=yes ;; | |
66 | no) version_specific_libs=no ;; | |
67 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
68 | esac], | |
69 | [version_specific_libs=no]) | |
70 | AC_MSG_RESULT($version_specific_libs) | |
71 | ||
72 | AC_ARG_ENABLE(objc-gc, | |
73 | [ --enable-objc-gc enable the use of Boehm's garbage collector with | |
74 | the GNU Objective-C runtime.], | |
75 | [case $enable_objc_gc in | |
76 | no) OBJC_BOEHM_GC='' ;; | |
77 | *) OBJC_BOEHM_GC=libobjc_gc.la ;; | |
78 | esac], | |
79 | [OBJC_BOEHM_GC='']) | |
80 | AC_SUBST(OBJC_BOEHM_GC) | |
81 | ||
82 | # ----------- | |
83 | # Directories | |
84 | # ----------- | |
9c01f395 NN |
85 | |
86 | # When building with srcdir == objdir, links to the source files will | |
87 | # be created in directories within the target_subdir. We have to | |
88 | # adjust toplevel_srcdir accordingly, so that configure finds | |
89 | # install-sh and other auxiliary files that live in the top-level | |
90 | # source directory. | |
91 | if test "${srcdir}" = "."; then | |
92 | if test -z "${with_target_subdir}"; then | |
93 | toprel=".." | |
94 | else | |
95 | if test "${with_target_subdir}" != "."; then | |
96 | toprel="${with_multisrctop}../.." | |
97 | else | |
98 | toprel="${with_multisrctop}.." | |
99 | fi | |
100 | fi | |
101 | else | |
102 | toprel=".." | |
103 | fi | |
104 | AC_CONFIG_AUX_DIR(${srcdir}/$toprel) | |
88386050 | 105 | toplevel_srcdir=\${srcdir}/$toprel |
9c01f395 | 106 | AC_SUBST(toplevel_srcdir) |
aebb8c22 | 107 | |
b150efee | 108 | AC_CANONICAL_SYSTEM |
1506eac1 | 109 | ACX_NONCANONICAL_TARGET |
9c01f395 | 110 | |
af0c82b3 | 111 | # Export source directory. |
9c01f395 NN |
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. | |
9c01f395 | 115 | case $srcdir in |
252dde64 NN |
116 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; |
117 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
9c01f395 | 118 | esac |
9c01f395 NN |
119 | AC_SUBST(glibcpp_srcdir) |
120 | ||
608e1e0c | 121 | # Calculate toolexeclibdir |
a42a57cb | 122 | # Also toolexecdir, though it's only used in toolexeclibdir |
9c01f395 NN |
123 | case ${version_specific_libs} in |
124 | yes) | |
125 | # Need the gcc compiler version to know where to install libraries | |
126 | # and header files if --enable-version-specific-runtime-libs option | |
127 | # is selected. | |
a42a57cb | 128 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' |
2b37e3d5 | 129 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' |
9c01f395 NN |
130 | ;; |
131 | no) | |
132 | if test -n "$with_cross_host" && | |
133 | test x"$with_cross_host" != x"no"; then | |
9c01f395 | 134 | # Install a library built with a cross compiler in tooldir, not libdir. |
a42a57cb | 135 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' |
608e1e0c NN |
136 | toolexeclibdir='$(toolexecdir)/lib' |
137 | else | |
a42a57cb | 138 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' |
608e1e0c | 139 | toolexeclibdir='$(libdir)' |
9c01f395 NN |
140 | fi |
141 | multi_os_directory=`$CC -print-multi-os-directory` | |
142 | case $multi_os_directory in | |
143 | .) ;; # Avoid trailing /. | |
608e1e0c | 144 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
9c01f395 NN |
145 | esac |
146 | ;; | |
147 | esac | |
a42a57cb | 148 | AC_SUBST(toolexecdir) |
608e1e0c | 149 | AC_SUBST(toolexeclibdir) |
9c01f395 | 150 | |
ff65de76 AP |
151 | # Figure out if we want to name the include directory and the |
152 | # library name changes differently. | |
7d34a5a9 | 153 | includedirname=include |
ff65de76 AP |
154 | libext= |
155 | case "${host}" in | |
156 | *-darwin*) | |
157 | # Darwin is the only target so far that needs a different include directory. | |
7d34a5a9 | 158 | includedirname=include-gnu-runtime |
ff65de76 AP |
159 | libext=-gnu |
160 | ;; | |
161 | esac | |
7d34a5a9 | 162 | AC_SUBST(includedirname) |
ff65de76 AP |
163 | AC_SUBST(libext) |
164 | ||
049bc404 AP |
165 | AC_CONFIG_HEADERS(config.h) |
166 | ||
252dde64 NN |
167 | # -------- |
168 | # Programs | |
169 | # -------- | |
170 | ||
171 | GCC_NO_EXECUTABLES | |
db7f3c69 NN |
172 | |
173 | # We must force CC to /not/ be a precious variable; otherwise | |
174 | # the wrong, non-multilib-adjusted value will be used in multilibs. | |
175 | # As a side effect, we have to subst CFLAGS ourselves. | |
176 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
177 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
252dde64 | 178 | AC_PROG_CC |
db7f3c69 NN |
179 | m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
180 | ||
a5a813f8 AP |
181 | # extra LD Flags which are required for targets |
182 | case "${host}" in | |
183 | *-darwin*) | |
184 | # Darwin needs -single_module when linking libobjc | |
185 | extra_ldflags_libobjc=-Wl,-single_module | |
186 | ;; | |
187 | esac | |
188 | AC_SUBST(extra_ldflags_libobjc) | |
189 | ||
db7f3c69 | 190 | AC_SUBST(CFLAGS) |
252dde64 NN |
191 | |
192 | AC_CHECK_TOOL(AS, as) | |
193 | AC_CHECK_TOOL(AR, ar) | |
194 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
195 | AC_PROG_INSTALL | |
7c6b0e92 | 196 | |
dd365157 MS |
197 | AM_MAINTAINER_MODE |
198 | ||
9c01f395 NN |
199 | # Enable Win32 DLL on MS Windows - FIXME |
200 | AC_LIBTOOL_WIN32_DLL | |
7c6b0e92 | 201 | |
b150efee | 202 | AC_PROG_LIBTOOL |
bce1b489 | 203 | |
dd365157 MS |
204 | AM_PROG_CC_C_O |
205 | ||
b150efee | 206 | AC_PROG_MAKE_SET |
bce1b489 | 207 | |
252dde64 NN |
208 | # ------- |
209 | # Headers | |
210 | # ------- | |
211 | ||
bce1b489 BE |
212 | # Sanity check for the cross-compilation case: |
213 | AC_CHECK_HEADER(stdio.h,:, | |
214 | [AC_MSG_ERROR([Can't find stdio.h. | |
215 | You must have a usable C system for the target already installed, at least | |
216 | including headers and, preferably, the library, before you can configure | |
217 | the Objective C runtime system. If necessary, install gcc now with | |
218 | \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])]) | |
219 | ||
220 | AC_HEADER_STDC | |
221 | ||
d972a4c2 OP |
222 | AC_CHECK_HEADERS(sched.h) |
223 | ||
252dde64 NN |
224 | # ----------- |
225 | # Miscellanea | |
226 | # ----------- | |
227 | ||
6886e18e AP |
228 | AC_MSG_CHECKING([for thread model used by GCC]) |
229 | target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` | |
230 | AC_MSG_RESULT([$target_thread_file]) | |
231 | ||
232 | if test $target_thread_file != single; then | |
233 | AC_DEFINE(HAVE_GTHR_DEFAULT, 1, | |
234 | [Define if the compiler has a thread header that is non single.]) | |
235 | fi | |
236 | ||
bce1b489 | 237 | |
049bc404 AP |
238 | AC_MSG_CHECKING([for exception model to use]) |
239 | AC_LANG_PUSH(C) | |
240 | AC_ARG_ENABLE(sjlj-exceptions, | |
241 | AS_HELP_STRING([--enable-sjlj-exceptions], | |
242 | [force use of builtin_setjmp for exceptions]), | |
243 | [:], | |
244 | [dnl Botheration. Now we've got to detect the exception model. | |
245 | dnl Link tests against libgcc.a are problematic since -- at least | |
246 | dnl as of this writing -- we've not been given proper -L bits for | |
247 | dnl single-tree newlib and libgloss. | |
248 | dnl | |
249 | dnl This is what AC_TRY_COMPILE would do if it didn't delete the | |
250 | dnl conftest files before we got a change to grep them first. | |
251 | cat > conftest.$ac_ext << EOF | |
252 | [#]line __oline__ "configure" | |
253 | @interface Frob | |
254 | @end | |
255 | @implementation Frob | |
256 | @end | |
257 | int proc(); | |
258 | int foo() | |
259 | { | |
260 | @try { | |
261 | return proc(); | |
262 | } | |
263 | @catch (Frob* ex) { | |
264 | return 0; | |
265 | } | |
266 | } | |
267 | EOF | |
268 | old_CFLAGS="$CFLAGS" | |
269 | dnl work around that we don't have Objective-C support in autoconf | |
270 | CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S" | |
271 | if AC_TRY_EVAL(ac_compile); then | |
272 | if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then | |
273 | enable_sjlj_exceptions=yes | |
274 | elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then | |
275 | enable_sjlj_exceptions=no | |
276 | fi | |
277 | fi | |
278 | CFLAGS="$old_CFLAGS" | |
279 | rm -f conftest*]) | |
280 | if test x$enable_sjlj_exceptions = xyes; then | |
281 | AC_DEFINE(SJLJ_EXCEPTIONS, 1, | |
282 | [Define if the compiler is configured for setjmp/longjmp exceptions.]) | |
283 | ac_exception_model_name=sjlj | |
284 | elif test x$enable_sjlj_exceptions = xno; then | |
285 | ac_exception_model_name="call frame" | |
286 | else | |
287 | AC_MSG_ERROR([unable to detect exception model]) | |
288 | fi | |
289 | AC_LANG_POP(C) | |
290 | AC_MSG_RESULT($ac_exception_model_name) | |
291 | ||
252dde64 NN |
292 | # ------ |
293 | # Output | |
294 | # ------ | |
bce1b489 | 295 | |
252dde64 NN |
296 | AC_CONFIG_FILES([Makefile]) |
297 | ||
298 | AC_CONFIG_COMMANDS([default], | |
608e1e0c | 299 | [[if test -n "$CONFIG_FILES"; then |
bce1b489 BE |
300 | if test -n "${with_target_subdir}"; then |
301 | # FIXME: We shouldn't need to set ac_file | |
302 | ac_file=Makefile | |
6706f116 | 303 | LD="${ORIGINAL_LD_FOR_MULTILIBS}" |
b150efee | 304 | . ${toplevel_srcdir}/config-ml.in |
bce1b489 | 305 | fi |
252dde64 NN |
306 | fi]], |
307 | [[srcdir=${srcdir} | |
bce1b489 BE |
308 | host=${host} |
309 | target=${target} | |
310 | with_target_subdir=${with_target_subdir} | |
311 | with_multisubdir=${with_multisubdir} | |
312 | ac_configure_args="--enable-multilib ${ac_configure_args}" | |
b150efee | 313 | toplevel_srcdir=${toplevel_srcdir} |
bce1b489 | 314 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} |
3343fdd2 | 315 | ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}" |
252dde64 NN |
316 | ]]) |
317 | ||
318 | AC_OUTPUT |