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1 | # Process this file with autoconf to produce a configure script. | |
2 | # Copyright (C) 1994-2018 Free Software Foundation, Inc. | |
3 | # Originally contributed by Dave Love (d.love@dl.ac.uk). | |
4 | # | |
5 | #This file is part of GCC. | |
6 | # | |
7 | #GCC is free software; you can redistribute it and/or modify | |
8 | #it under the terms of the GNU General Public License as published by | |
9 | #the Free Software Foundation; either version 3, or (at your option) | |
10 | #any later version. | |
11 | # | |
12 | #GCC is distributed in the hope that it will be useful, | |
13 | #but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | #GNU General Public License for more details. | |
16 | # | |
17 | #You should have received a copy of the GNU General Public License | |
18 | #along with GCC; see the file COPYING3. If not see | |
19 | #<http://www.gnu.org/licenses/>. | |
20 | ||
21 | AC_INIT(package-unused, version-unused,, libobjc) | |
22 | AC_CONFIG_SRCDIR([objc/objc.h]) | |
23 | GCC_TOPLEV_SUBDIRS | |
24 | ||
25 | # We need the following definitions because AC_PROG_LIBTOOL relies on them | |
26 | PACKAGE=libobjc | |
27 | # Version is pulled out to make it a bit easier to change using sed. | |
28 | VERSION=4:0:0 | |
29 | AC_SUBST(VERSION) | |
30 | ||
31 | # This works around the fact that libtool configuration may change LD | |
32 | # for this particular configuration, but some shells, instead of | |
33 | # keeping the changes in LD private, export them just because LD is | |
34 | # exported. | |
35 | ORIGINAL_LD_FOR_MULTILIBS=$LD | |
36 | ||
37 | # ------- | |
38 | # Options | |
39 | # ------- | |
40 | ||
41 | # We use these options to decide which functions to include. | |
42 | AC_ARG_WITH(target-subdir, | |
43 | [ --with-target-subdir=SUBDIR | |
44 | configuring in a subdirectory]) | |
45 | AC_ARG_WITH(cross-host, | |
46 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
47 | ||
48 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
49 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
50 | [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
51 | [case "$enableval" in | |
52 | yes) version_specific_libs=yes ;; | |
53 | no) version_specific_libs=no ;; | |
54 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
55 | esac], | |
56 | [version_specific_libs=no]) | |
57 | AC_MSG_RESULT($version_specific_libs) | |
58 | ||
59 | # ----------- | |
60 | # Directories | |
61 | # ----------- | |
62 | ||
63 | # Find the rest of the source tree framework. | |
64 | AM_ENABLE_MULTILIB(, ..) | |
65 | ||
66 | AC_CANONICAL_SYSTEM | |
67 | ACX_NONCANONICAL_TARGET | |
68 | ||
69 | # Export source directory. | |
70 | # These need to be absolute paths, yet at the same time need to | |
71 | # canonicalize only relative paths, because then amd will not unmount | |
72 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
73 | case $srcdir in | |
74 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; | |
75 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
76 | esac | |
77 | AC_SUBST(glibcpp_srcdir) | |
78 | ||
79 | # Calculate toolexeclibdir | |
80 | # Also toolexecdir, though it's only used in toolexeclibdir | |
81 | case ${version_specific_libs} in | |
82 | yes) | |
83 | # Need the gcc compiler version to know where to install libraries | |
84 | # and header files if --enable-version-specific-runtime-libs option | |
85 | # is selected. | |
86 | toolexecdir='$(libdir)/gcc/$(target_noncanonical)' | |
87 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
88 | ;; | |
89 | no) | |
90 | if test -n "$with_cross_host" && | |
91 | test x"$with_cross_host" != x"no"; then | |
92 | # Install a library built with a cross compiler in tooldir, not libdir. | |
93 | toolexecdir='$(exec_prefix)/$(target_noncanonical)' | |
94 | toolexeclibdir='$(toolexecdir)/lib' | |
95 | else | |
96 | toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' | |
97 | toolexeclibdir='$(libdir)' | |
98 | fi | |
99 | multi_os_directory=`$CC -print-multi-os-directory` | |
100 | case $multi_os_directory in | |
101 | .) ;; # Avoid trailing /. | |
102 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
103 | esac | |
104 | ;; | |
105 | esac | |
106 | AC_SUBST(toolexecdir) | |
107 | AC_SUBST(toolexeclibdir) | |
108 | ||
109 | # Figure out if we want to name the include directory and the | |
110 | # library name changes differently. | |
111 | includedirname=include | |
112 | libsuffix= | |
113 | case "${host}" in | |
114 | *-darwin*) | |
115 | # Darwin is the only target so far that needs a different include directory. | |
116 | includedirname=include-gnu-runtime | |
117 | libsuffix=-gnu | |
118 | ;; | |
119 | esac | |
120 | AC_SUBST(includedirname) | |
121 | AC_SUBST(libsuffix) | |
122 | ||
123 | AC_CONFIG_HEADERS(config.h) | |
124 | ||
125 | # -------- | |
126 | # Programs | |
127 | # -------- | |
128 | ||
129 | GCC_NO_EXECUTABLES | |
130 | ||
131 | # We must force CC to /not/ be a precious variable; otherwise | |
132 | # the wrong, non-multilib-adjusted value will be used in multilibs. | |
133 | # As a side effect, we have to subst CFLAGS ourselves. | |
134 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
135 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
136 | AC_PROG_CC | |
137 | m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) | |
138 | ||
139 | # extra LD Flags which are required for targets | |
140 | ACX_LT_HOST_FLAGS | |
141 | case "${host}" in | |
142 | *-darwin*) | |
143 | # Darwin needs -single_module when linking libobjc | |
144 | extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module' | |
145 | ;; | |
146 | *-cygwin*|*-mingw*) | |
147 | # Tell libtool to build DLLs on Windows | |
148 | extra_ldflags_libobjc='$(lt_host_flags)' | |
149 | ;; | |
150 | esac | |
151 | AC_SUBST(extra_ldflags_libobjc) | |
152 | ||
153 | # Add CET specific flags if CET is enabled | |
154 | GCC_CET_FLAGS(CET_FLAGS) | |
155 | XCFLAGS="$XCFLAGS $CET_FLAGS" | |
156 | ||
157 | AC_SUBST(CFLAGS) | |
158 | AC_SUBST(XCFLAGS) | |
159 | ||
160 | AC_CHECK_TOOL(AS, as) | |
161 | AC_CHECK_TOOL(AR, ar) | |
162 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
163 | AC_PROG_INSTALL | |
164 | ||
165 | AM_MAINTAINER_MODE | |
166 | ||
167 | # Enable Win32 DLL on MS Windows - FIXME | |
168 | AC_LIBTOOL_WIN32_DLL | |
169 | ||
170 | AC_PROG_LIBTOOL | |
171 | ||
172 | AM_PROG_CC_C_O | |
173 | ||
174 | AC_PROG_MAKE_SET | |
175 | ||
176 | # ------- | |
177 | # Headers | |
178 | # ------- | |
179 | ||
180 | # Sanity check for the cross-compilation case: | |
181 | AC_CHECK_HEADER(stdio.h,:, | |
182 | [AC_MSG_ERROR([Can't find stdio.h. | |
183 | You must have a usable C system for the target already installed, at least | |
184 | including headers and, preferably, the library, before you can configure | |
185 | the Objective C runtime system. If necessary, install gcc now with | |
186 | \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])]) | |
187 | ||
188 | AC_HEADER_STDC | |
189 | ||
190 | AC_CHECK_HEADERS(sched.h) | |
191 | ||
192 | # ----------- | |
193 | # Miscellanea | |
194 | # ----------- | |
195 | ||
196 | # Check if we have thread-local storage | |
197 | GCC_CHECK_TLS | |
198 | ||
199 | gt_BITFIELD_TYPE_MATTERS | |
200 | ||
201 | # ----------- | |
202 | # boehm-gc | |
203 | # ----------- | |
204 | ||
205 | AC_ARG_ENABLE(objc-gc, | |
206 | [AS_HELP_STRING([--enable-objc-gc], | |
207 | [enable use of Boehm's garbage collector with the | |
208 | GNU Objective-C runtime])],,enable_objc_gc=no) | |
209 | AC_ARG_WITH([target-bdw-gc], | |
210 | [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST], | |
211 | [specify prefix directory for installed bdw-gc package. | |
212 | Equivalent to --with-target-bdw-gc-include=PATH/include | |
213 | plus --with-target-bdw-gc-lib=PATH/lib])]) | |
214 | AC_ARG_WITH([target-bdw-gc-include], | |
215 | [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST], | |
216 | [specify directories for installed bdw-gc include files])]) | |
217 | AC_ARG_WITH([target-bdw-gc-lib], | |
218 | [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST], | |
219 | [specify directories for installed bdw-gc library])]) | |
220 | ||
221 | case "$enable_objc_gc" in | |
222 | no) | |
223 | use_bdw_gc=no | |
224 | ;; | |
225 | *) | |
226 | AC_MSG_CHECKING([for bdw garbage collector]) | |
227 | if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then | |
228 | dnl no bdw-gw options, assuming bdw-gc in default locations | |
229 | BDW_GC_CFLAGS= | |
230 | BDW_GC_LIBS="-lgc" | |
231 | else | |
232 | dnl bdw-gw options passed by configure flags | |
233 | if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then | |
234 | AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing]) | |
235 | elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then | |
236 | AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing]) | |
237 | else | |
238 | AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options]) | |
239 | fi | |
240 | mldir=`${CC-gcc} --print-multi-directory 2>/dev/null` | |
241 | bdw_val= | |
242 | if test "x$with_target_bdw_gc" != x; then | |
243 | for i in `echo $with_target_bdw_gc | tr ',' ' '`; do | |
244 | case "$i" in | |
245 | *=*) sd=${i%%=*}; d=${i#*=} ;; | |
246 | *) sd=.; d=$i ;; | |
247 | esac | |
248 | if test "$mldir" = "$sd"; then | |
249 | bdw_val=$d | |
250 | fi | |
251 | done | |
252 | if test "x$bdw_val" = x; then | |
253 | AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc]) | |
254 | fi | |
255 | bdw_inc_dir="$bdw_val/include" | |
256 | bdw_lib_dir="$bdw_val/lib" | |
257 | fi | |
258 | bdw_val= | |
259 | if test "x$with_target_bdw_gc_include" != x; then | |
260 | for i in `echo $with_target_bdw_gc_include | tr ',' ' '`; do | |
261 | case "$i" in | |
262 | *=*) sd=${i%%=*}; d=${i#*=} ;; | |
263 | *) sd=.; d=$i; fallback=$i ;; | |
264 | esac | |
265 | if test "$mldir" = "$sd"; then | |
266 | bdw_val=$d | |
267 | fi | |
268 | done | |
269 | if test "x$bdw_val" = x && test "x$bdw_inc_dir" = x && test "x$fallback" != x; then | |
270 | bdw_inc_dir="$fallback" | |
271 | elif test "x$bdw_val" = x; then | |
272 | AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include]) | |
273 | else | |
274 | bdw_inc_dir="$bdw_val" | |
275 | fi | |
276 | fi | |
277 | bdw_val= | |
278 | if test "x$with_target_bdw_gc_lib" != x; then | |
279 | for i in `echo $with_target_bdw_gc_lib | tr ',' ' '`; do | |
280 | case "$i" in | |
281 | *=*) sd=${i%%=*}; d=${i#*=} ;; | |
282 | *) sd=.; d=$i ;; | |
283 | esac | |
284 | if test "$mldir" = "$sd"; then | |
285 | bdw_val=$d | |
286 | fi | |
287 | done | |
288 | if test "x$bdw_val" = x; then | |
289 | AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib]) | |
290 | fi | |
291 | bdw_lib_dir="$bdw_val" | |
292 | fi | |
293 | if test "x$bdw_inc_dir" = x; then | |
294 | AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include]) | |
295 | fi | |
296 | if test "x$bdw_lib_dir" = x; then | |
297 | AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib]) | |
298 | fi | |
299 | BDW_GC_CFLAGS="-I$bdw_inc_dir" | |
300 | if test -f $bdw_lib_dir/libgc.la; then | |
301 | BDW_GC_LIBS="$bdw_lib_dir/libgc.la" | |
302 | else | |
303 | BDW_GC_LIBS="-L$bdw_lib_dir -lgc" | |
304 | fi | |
305 | AC_MSG_RESULT([found]) | |
306 | fi | |
307 | ||
308 | case "$BDW_GC_LIBS" in | |
309 | *libgc.la) | |
310 | use_bdw_gc=yes | |
311 | ;; | |
312 | *) | |
313 | AC_MSG_CHECKING([for system boehm-gc]) | |
314 | save_CFLAGS=$CFLAGS | |
315 | save_LIBS=$LIBS | |
316 | CFLAGS="$CFLAGS $BDW_GC_CFLAGS" | |
317 | LIBS="$LIBS $BDW_GC_LIBS" | |
318 | dnl the link test is not good enough for ARM32 multilib detection, | |
319 | dnl first check to link, then to run | |
320 | AC_LINK_IFELSE( | |
321 | [AC_LANG_PROGRAM([#include <gc/gc.h>],[GC_init()])], | |
322 | [ | |
323 | AC_RUN_IFELSE([AC_LANG_SOURCE([[ | |
324 | #include <gc/gc.h> | |
325 | int main() { | |
326 | GC_init(); | |
327 | return 0; | |
328 | } | |
329 | ]])], | |
330 | [system_bdw_gc_found=yes], | |
331 | [system_bdw_gc_found=no], | |
332 | dnl assume no system boehm-gc for cross builds ... | |
333 | [system_bdw_gc_found=no] | |
334 | ) | |
335 | ], | |
336 | [system_bdw_gc_found=no]) | |
337 | CFLAGS=$save_CFLAGS | |
338 | LIBS=$save_LIBS | |
339 | if test x$enable_objc_gc = xauto && test x$system_bdw_gc_found = xno; then | |
340 | AC_MSG_WARN([system bdw-gc not found, not building libobjc_gc]) | |
341 | use_bdw_gc=no | |
342 | elif test x$enable_objc_gc = xyes && test x$system_bdw_gc_found = xno; then | |
343 | AC_MSG_ERROR([system bdw-gc required but not found]) | |
344 | else | |
345 | use_bdw_gc=yes | |
346 | AC_MSG_RESULT([found]) | |
347 | fi | |
348 | esac | |
349 | esac | |
350 | ||
351 | if test "$use_bdw_gc" = no; then | |
352 | OBJC_GCFLAGS='' | |
353 | OBJC_BOEHM_GC='' | |
354 | OBJC_BOEHM_GC_INCLUDES='' | |
355 | OBJC_BOEHM_GC_LIBS='' | |
356 | else | |
357 | OBJC_GCFLAGS='-DOBJC_WITH_GC=1' | |
358 | OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la' | |
359 | OBJC_BOEHM_GC_INCLUDES=$BDW_GC_CFLAGS | |
360 | OBJC_BOEHM_GC_LIBS=$BDW_GC_LIBS | |
361 | fi | |
362 | AC_SUBST(OBJC_GCFLAGS) | |
363 | AC_SUBST(OBJC_BOEHM_GC) | |
364 | AC_SUBST(OBJC_BOEHM_GC_INCLUDES) | |
365 | AC_SUBST(OBJC_BOEHM_GC_LIBS) | |
366 | ||
367 | # Determine what GCC version number to use in filesystem paths. | |
368 | GCC_BASE_VER | |
369 | ||
370 | # ------ | |
371 | # Output | |
372 | # ------ | |
373 | ||
374 | if test ${multilib} = yes; then | |
375 | multilib_arg="--enable-multilib" | |
376 | else | |
377 | multilib_arg= | |
378 | fi | |
379 | ||
380 | AC_CONFIG_FILES([Makefile]) | |
381 | AC_OUTPUT |