]>
Commit | Line | Data |
---|---|---|
1 | # configure.ac for GCC | |
2 | # Process this file with autoconf to generate a configuration script. | |
3 | ||
4 | # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, | |
5 | # 2007, 2008, 2009, 2010 Free Software Foundation, Inc. | |
6 | ||
7 | #This file is part of GCC. | |
8 | ||
9 | #GCC is free software; you can redistribute it and/or modify it under | |
10 | #the terms of the GNU General Public License as published by the Free | |
11 | #Software Foundation; either version 3, or (at your option) any later | |
12 | #version. | |
13 | ||
14 | #GCC is distributed in the hope that it will be useful, but WITHOUT | |
15 | #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | #for more details. | |
18 | ||
19 | #You should have received a copy of the GNU General Public License | |
20 | #along with GCC; see the file COPYING3. If not see | |
21 | #<http://www.gnu.org/licenses/>. | |
22 | ||
23 | # -------------------------------- | |
24 | # Initialization and sanity checks | |
25 | # -------------------------------- | |
26 | ||
27 | AC_PREREQ(2.64) | |
28 | AC_INIT | |
29 | AC_CONFIG_SRCDIR(tree.c) | |
30 | AC_CONFIG_HEADER(auto-host.h:config.in) | |
31 | ||
32 | gcc_version=`cat $srcdir/BASE-VER` | |
33 | ||
34 | # Determine the host, build, and target systems | |
35 | AC_CANONICAL_BUILD | |
36 | AC_CANONICAL_HOST | |
37 | AC_CANONICAL_TARGET | |
38 | ||
39 | # Determine the noncanonical target name, for directory use. | |
40 | ACX_NONCANONICAL_TARGET | |
41 | ||
42 | # Determine the target- and build-specific subdirectories | |
43 | GCC_TOPLEV_SUBDIRS | |
44 | ||
45 | # Set program_transform_name | |
46 | AC_ARG_PROGRAM | |
47 | ||
48 | # Check for bogus environment variables. | |
49 | # Test if LIBRARY_PATH contains the notation for the current directory | |
50 | # since this would lead to problems installing/building glibc. | |
51 | # LIBRARY_PATH contains the current directory if one of the following | |
52 | # is true: | |
53 | # - one of the terminals (":" and ";") is the first or last sign | |
54 | # - two terminals occur directly after each other | |
55 | # - the path contains an element with a dot in it | |
56 | AC_MSG_CHECKING(LIBRARY_PATH variable) | |
57 | changequote(,)dnl | |
58 | case ${LIBRARY_PATH} in | |
59 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
60 | library_path_setting="contains current directory" | |
61 | ;; | |
62 | *) | |
63 | library_path_setting="ok" | |
64 | ;; | |
65 | esac | |
66 | changequote([,])dnl | |
67 | AC_MSG_RESULT($library_path_setting) | |
68 | if test "$library_path_setting" != "ok"; then | |
69 | AC_MSG_ERROR([ | |
70 | *** LIBRARY_PATH shouldn't contain the current directory when | |
71 | *** building gcc. Please change the environment variable | |
72 | *** and run configure again.]) | |
73 | fi | |
74 | ||
75 | # Test if GCC_EXEC_PREFIX contains the notation for the current directory | |
76 | # since this would lead to problems installing/building glibc. | |
77 | # GCC_EXEC_PREFIX contains the current directory if one of the following | |
78 | # is true: | |
79 | # - one of the terminals (":" and ";") is the first or last sign | |
80 | # - two terminals occur directly after each other | |
81 | # - the path contains an element with a dot in it | |
82 | AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) | |
83 | changequote(,)dnl | |
84 | case ${GCC_EXEC_PREFIX} in | |
85 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
86 | gcc_exec_prefix_setting="contains current directory" | |
87 | ;; | |
88 | *) | |
89 | gcc_exec_prefix_setting="ok" | |
90 | ;; | |
91 | esac | |
92 | changequote([,])dnl | |
93 | AC_MSG_RESULT($gcc_exec_prefix_setting) | |
94 | if test "$gcc_exec_prefix_setting" != "ok"; then | |
95 | AC_MSG_ERROR([ | |
96 | *** GCC_EXEC_PREFIX shouldn't contain the current directory when | |
97 | *** building gcc. Please change the environment variable | |
98 | *** and run configure again.]) | |
99 | fi | |
100 | ||
101 | # ----------- | |
102 | # Directories | |
103 | # ----------- | |
104 | ||
105 | # Specify the local prefix | |
106 | local_prefix= | |
107 | AC_ARG_WITH(local-prefix, | |
108 | [ --with-local-prefix=DIR specifies directory to put local include], | |
109 | [case "${withval}" in | |
110 | yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; | |
111 | no) ;; | |
112 | *) local_prefix=$with_local_prefix ;; | |
113 | esac]) | |
114 | ||
115 | # Default local prefix if it is empty | |
116 | if test x$local_prefix = x; then | |
117 | local_prefix=/usr/local | |
118 | fi | |
119 | ||
120 | # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only | |
121 | # passed in by the toplevel make and thus we'd get different behavior | |
122 | # depending on where we built the sources. | |
123 | gcc_gxx_include_dir= | |
124 | # Specify the g++ header file directory | |
125 | AC_ARG_WITH(gxx-include-dir, | |
126 | [ --with-gxx-include-dir=DIR | |
127 | specifies directory to put g++ header files], | |
128 | [case "${withval}" in | |
129 | yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; | |
130 | no) ;; | |
131 | *) gcc_gxx_include_dir=$with_gxx_include_dir ;; | |
132 | esac]) | |
133 | ||
134 | # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. | |
135 | if test x${gcc_gxx_include_dir} = x; then | |
136 | if test x${enable_version_specific_runtime_libs} = xyes; then | |
137 | gcc_gxx_include_dir='${libsubdir}/include/c++' | |
138 | else | |
139 | libstdcxx_incdir='include/c++/$(version)' | |
140 | if test x$host != x$target; then | |
141 | libstdcxx_incdir="$target_alias/$libstdcxx_incdir" | |
142 | fi | |
143 | gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir" | |
144 | fi | |
145 | fi | |
146 | ||
147 | AC_ARG_WITH(cpp_install_dir, | |
148 | [ --with-cpp-install-dir=DIR | |
149 | install the user visible C preprocessor in DIR | |
150 | (relative to PREFIX) as well as PREFIX/bin], | |
151 | [if test x$withval = xyes; then | |
152 | AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) | |
153 | elif test x$withval != xno; then | |
154 | cpp_install_dir=$withval | |
155 | fi]) | |
156 | ||
157 | # We would like to our source tree to be readonly. However when releases or | |
158 | # pre-releases are generated, the flex/bison generated files as well as the | |
159 | # various formats of manuals need to be included along with the rest of the | |
160 | # sources. Therefore we have --enable-generated-files-in-srcdir to do | |
161 | # just that. | |
162 | ||
163 | AC_MSG_CHECKING([whether to place generated files in the source directory]) | |
164 | dnl generated-files-in-srcdir is disabled by default | |
165 | AC_ARG_ENABLE(generated-files-in-srcdir, | |
166 | [ --enable-generated-files-in-srcdir | |
167 | put copies of generated files in source dir | |
168 | intended for creating source tarballs for users | |
169 | without texinfo bison or flex.], | |
170 | generated_files_in_srcdir=$enableval, | |
171 | generated_files_in_srcdir=no) | |
172 | ||
173 | AC_MSG_RESULT($generated_files_in_srcdir) | |
174 | ||
175 | if test "$generated_files_in_srcdir" = "yes"; then | |
176 | GENINSRC='' | |
177 | else | |
178 | GENINSRC='#' | |
179 | fi | |
180 | AC_SUBST(GENINSRC) | |
181 | ||
182 | # ------------------- | |
183 | # Find default linker | |
184 | # ------------------- | |
185 | ||
186 | # With GNU ld | |
187 | AC_ARG_WITH(gnu-ld, | |
188 | [ --with-gnu-ld arrange to work with GNU ld.], | |
189 | gnu_ld_flag="$with_gnu_ld", | |
190 | gnu_ld_flag=no) | |
191 | ||
192 | # With pre-defined ld | |
193 | AC_ARG_WITH(ld, | |
194 | [ --with-ld arrange to use the specified ld (full pathname)], | |
195 | DEFAULT_LINKER="$with_ld") | |
196 | if test x"${DEFAULT_LINKER+set}" = x"set"; then | |
197 | if test ! -x "$DEFAULT_LINKER"; then | |
198 | AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) | |
199 | elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then | |
200 | gnu_ld_flag=yes | |
201 | fi | |
202 | AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", | |
203 | [Define to enable the use of a default linker.]) | |
204 | fi | |
205 | ||
206 | gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi` | |
207 | AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.]) | |
208 | ||
209 | AC_MSG_CHECKING([whether a default linker was specified]) | |
210 | if test x"${DEFAULT_LINKER+set}" = x"set"; then | |
211 | if test x"$gnu_ld_flag" = x"no"; then | |
212 | AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) | |
213 | else | |
214 | AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) | |
215 | fi | |
216 | else | |
217 | AC_MSG_RESULT(no) | |
218 | fi | |
219 | ||
220 | # With demangler in GNU ld | |
221 | AC_ARG_WITH(demangler-in-ld, | |
222 | [ --with-demangler-in-ld try to use demangler in GNU ld.], | |
223 | demangler_in_ld="$with_demangler_in_ld", | |
224 | demangler_in_ld=no) | |
225 | ||
226 | # ---------------------- | |
227 | # Find default assembler | |
228 | # ---------------------- | |
229 | ||
230 | # With GNU as | |
231 | AC_ARG_WITH(gnu-as, | |
232 | [ --with-gnu-as arrange to work with GNU as], | |
233 | gas_flag="$with_gnu_as", | |
234 | gas_flag=no) | |
235 | ||
236 | AC_ARG_WITH(as, | |
237 | [ --with-as arrange to use the specified as (full pathname)], | |
238 | DEFAULT_ASSEMBLER="$with_as") | |
239 | if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then | |
240 | if test ! -x "$DEFAULT_ASSEMBLER"; then | |
241 | AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) | |
242 | elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then | |
243 | gas_flag=yes | |
244 | fi | |
245 | AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", | |
246 | [Define to enable the use of a default assembler.]) | |
247 | fi | |
248 | ||
249 | gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi` | |
250 | AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.]) | |
251 | ||
252 | AC_MSG_CHECKING([whether a default assembler was specified]) | |
253 | if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then | |
254 | if test x"$gas_flag" = x"no"; then | |
255 | AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) | |
256 | else | |
257 | AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) | |
258 | fi | |
259 | else | |
260 | AC_MSG_RESULT(no) | |
261 | fi | |
262 | ||
263 | # --------------- | |
264 | # Find C compiler | |
265 | # --------------- | |
266 | ||
267 | # If a non-executable a.out is present (e.g. created by GNU as above even if | |
268 | # invoked with -v only), the IRIX 6 native ld just overwrites the existing | |
269 | # file, even when creating an executable, so an execution test fails. | |
270 | # Remove possible default executable files to avoid this. | |
271 | # | |
272 | # FIXME: This really belongs into AC_PROG_CC and can be removed once | |
273 | # Autoconf includes it. | |
274 | rm -f a.out a.exe b.out | |
275 | ||
276 | # Find the native compiler | |
277 | AC_PROG_CC | |
278 | AM_PROG_CC_C_O | |
279 | AC_PROG_CXX | |
280 | ACX_PROG_GNAT([-I"$srcdir"/ada]) | |
281 | ||
282 | # autoconf is lame and doesn't give us any substitution variable for this. | |
283 | if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then | |
284 | NO_MINUS_C_MINUS_O=yes | |
285 | else | |
286 | OUTPUT_OPTION='-o $@' | |
287 | fi | |
288 | AC_SUBST(NO_MINUS_C_MINUS_O) | |
289 | AC_SUBST(OUTPUT_OPTION) | |
290 | ||
291 | # Remove the -O2: for historical reasons, unless bootstrapping we prefer | |
292 | # optimizations to be activated explicitly by the toplevel. | |
293 | case "$CC" in | |
294 | */prev-gcc/xgcc*) ;; | |
295 | *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;; | |
296 | esac | |
297 | AC_SUBST(CFLAGS) | |
298 | ||
299 | # ------------------------- | |
300 | # Check C compiler features | |
301 | # ------------------------- | |
302 | ||
303 | AC_USE_SYSTEM_EXTENSIONS | |
304 | AC_PROG_CPP | |
305 | AC_C_INLINE | |
306 | ||
307 | AC_SYS_LARGEFILE | |
308 | ||
309 | # sizeof(char) is 1 by definition. | |
310 | AC_CHECK_SIZEOF(void *) | |
311 | AC_CHECK_SIZEOF(short) | |
312 | AC_CHECK_SIZEOF(int) | |
313 | AC_CHECK_SIZEOF(long) | |
314 | AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) | |
315 | AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)]) | |
316 | GCC_STDINT_TYPES | |
317 | ||
318 | # --------------------- | |
319 | # Warnings and checking | |
320 | # --------------------- | |
321 | ||
322 | # Check $CC warning features (if it's GCC). | |
323 | # We want to use -pedantic, but we don't want warnings about | |
324 | # * 'long long' | |
325 | # * variadic macros | |
326 | # * overlong strings | |
327 | # So, we only use -pedantic if we can disable those warnings. | |
328 | ||
329 | ACX_PROG_CC_WARNING_OPTS( | |
330 | m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn]) | |
331 | ACX_PROG_CC_WARNING_OPTS( | |
332 | m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])), | |
333 | [c_loose_warn]) | |
334 | ACX_PROG_CC_WARNING_OPTS( | |
335 | m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn]) | |
336 | ACX_PROG_CC_WARNING_OPTS( | |
337 | m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) | |
338 | ACX_PROG_CC_WARNING_ALMOST_PEDANTIC( | |
339 | m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], | |
340 | [-Wno-overlength-strings])), [strict_warn]) | |
341 | ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn]) | |
342 | ||
343 | # The above macros do nothing if the compiler is not GCC. However, the | |
344 | # Makefile has more goo to add other flags, so these variables are used | |
345 | # to enable warnings only for GCC. | |
346 | warn_cflags= | |
347 | warn_cxxflags= | |
348 | if test "x$GCC" = "xyes"; then | |
349 | warn_cflags='$(GCC_WARN_CFLAGS)' | |
350 | warn_cxxflags='$(GCC_WARN_CXXFLAGS)' | |
351 | fi | |
352 | AC_SUBST(warn_cflags) | |
353 | AC_SUBST(warn_cxxflags) | |
354 | ||
355 | # Enable expensive internal checks | |
356 | is_release= | |
357 | if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then | |
358 | is_release=yes | |
359 | fi | |
360 | ||
361 | AC_ARG_ENABLE(checking, | |
362 | [ --enable-checking[=LIST] | |
363 | enable expensive run-time checks. With LIST, | |
364 | enable only specific categories of checks. | |
365 | Categories are: yes,no,all,none,release. | |
366 | Flags are: assert,df,fold,gc,gcac,gimple,misc, | |
367 | rtlflag,rtl,runtime,tree,valgrind,types.], | |
368 | [ac_checking_flags="${enableval}"],[ | |
369 | # Determine the default checks. | |
370 | if test x$is_release = x ; then | |
371 | ac_checking_flags=yes | |
372 | else | |
373 | ac_checking_flags=release | |
374 | fi]) | |
375 | IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," | |
376 | for check in release $ac_checking_flags | |
377 | do | |
378 | case $check in | |
379 | # these set all the flags to specific states | |
380 | yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; | |
381 | ac_fold_checking= ; ac_gc_checking=1 ; | |
382 | ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; | |
383 | ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; | |
384 | ac_tree_checking=1 ; ac_valgrind_checking= ; | |
385 | ac_types_checking=1 ;; | |
386 | no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; | |
387 | ac_fold_checking= ; ac_gc_checking= ; | |
388 | ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; | |
389 | ac_rtlflag_checking= ; ac_runtime_checking= ; | |
390 | ac_tree_checking= ; ac_valgrind_checking= ; | |
391 | ac_types_checking= ;; | |
392 | all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; | |
393 | ac_fold_checking=1 ; ac_gc_checking=1 ; | |
394 | ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; | |
395 | ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; | |
396 | ac_tree_checking=1 ; ac_valgrind_checking= ; | |
397 | ac_types_checking=1 ;; | |
398 | release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; | |
399 | ac_fold_checking= ; ac_gc_checking= ; | |
400 | ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; | |
401 | ac_rtlflag_checking= ; ac_runtime_checking=1 ; | |
402 | ac_tree_checking= ; ac_valgrind_checking= ; | |
403 | ac_types_checking= ;; | |
404 | # these enable particular checks | |
405 | assert) ac_assert_checking=1 ;; | |
406 | df) ac_df_checking=1 ;; | |
407 | fold) ac_fold_checking=1 ;; | |
408 | gc) ac_gc_checking=1 ;; | |
409 | gcac) ac_gc_always_collect=1 ;; | |
410 | gimple) ac_gimple_checking=1 ;; | |
411 | misc) ac_checking=1 ;; | |
412 | rtl) ac_rtl_checking=1 ;; | |
413 | rtlflag) ac_rtlflag_checking=1 ;; | |
414 | runtime) ac_runtime_checking=1 ;; | |
415 | tree) ac_tree_checking=1 ;; | |
416 | types) ac_types_checking=1 ;; | |
417 | valgrind) ac_valgrind_checking=1 ;; | |
418 | *) AC_MSG_ERROR(unknown check category $check) ;; | |
419 | esac | |
420 | done | |
421 | IFS="$ac_save_IFS" | |
422 | ||
423 | nocommon_flag="" | |
424 | if test x$ac_checking != x ; then | |
425 | AC_DEFINE(ENABLE_CHECKING, 1, | |
426 | [Define if you want more run-time sanity checks. This one gets a grab | |
427 | bag of miscellaneous but relatively cheap checks.]) | |
428 | nocommon_flag=-fno-common | |
429 | fi | |
430 | AC_SUBST(nocommon_flag) | |
431 | if test x$ac_df_checking != x ; then | |
432 | AC_DEFINE(ENABLE_DF_CHECKING, 1, | |
433 | [Define if you want more run-time sanity checks for dataflow.]) | |
434 | fi | |
435 | if test x$ac_assert_checking != x ; then | |
436 | AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, | |
437 | [Define if you want assertions enabled. This is a cheap check.]) | |
438 | fi | |
439 | if test x$ac_gimple_checking != x ; then | |
440 | AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, | |
441 | [Define if you want operations on GIMPLE (the basic data structure of | |
442 | the high-level optimizers) to be checked for dynamic type safety at | |
443 | runtime. This is moderately expensive.]) | |
444 | fi | |
445 | GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) | |
446 | if test x$ac_runtime_checking != x ; then | |
447 | AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, | |
448 | [Define if you want runtime assertions enabled. This is a cheap check.]) | |
449 | fi | |
450 | if test x$ac_tree_checking != x ; then | |
451 | AC_DEFINE(ENABLE_TREE_CHECKING, 1, | |
452 | [Define if you want all operations on trees (the basic data | |
453 | structure of the front ends) to be checked for dynamic type safety | |
454 | at runtime. This is moderately expensive. The tree browser debugging | |
455 | routines will also be enabled by this option. | |
456 | ]) | |
457 | TREEBROWSER=tree-browser.o | |
458 | fi | |
459 | if test x$ac_types_checking != x ; then | |
460 | AC_DEFINE(ENABLE_TYPES_CHECKING, 1, | |
461 | [Define if you want all gimple types to be verified after gimplifiation. | |
462 | This is cheap. | |
463 | ]) | |
464 | fi | |
465 | AC_SUBST(TREEBROWSER) | |
466 | if test x$ac_rtl_checking != x ; then | |
467 | AC_DEFINE(ENABLE_RTL_CHECKING, 1, | |
468 | [Define if you want all operations on RTL (the basic data structure | |
469 | of the optimizer and back end) to be checked for dynamic type safety | |
470 | at runtime. This is quite expensive.]) | |
471 | fi | |
472 | if test x$ac_rtlflag_checking != x ; then | |
473 | AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, | |
474 | [Define if you want RTL flag accesses to be checked against the RTL | |
475 | codes that are supported for each access macro. This is relatively | |
476 | cheap.]) | |
477 | fi | |
478 | if test x$ac_gc_checking != x ; then | |
479 | AC_DEFINE(ENABLE_GC_CHECKING, 1, | |
480 | [Define if you want the garbage collector to do object poisoning and | |
481 | other memory allocation checks. This is quite expensive.]) | |
482 | fi | |
483 | if test x$ac_gc_always_collect != x ; then | |
484 | AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, | |
485 | [Define if you want the garbage collector to operate in maximally | |
486 | paranoid mode, validating the entire heap and collecting garbage at | |
487 | every opportunity. This is extremely expensive.]) | |
488 | fi | |
489 | if test x$ac_fold_checking != x ; then | |
490 | AC_DEFINE(ENABLE_FOLD_CHECKING, 1, | |
491 | [Define if you want fold checked that it never destructs its argument. | |
492 | This is quite expensive.]) | |
493 | fi | |
494 | valgrind_path_defines= | |
495 | valgrind_command= | |
496 | ||
497 | dnl # This check AC_REQUIREs various stuff, so it *must not* be inside | |
498 | dnl # an if statement. This was the source of very frustrating bugs | |
499 | dnl # in converting to autoconf 2.5x! | |
500 | AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) | |
501 | ||
502 | if test x$ac_valgrind_checking != x ; then | |
503 | # It is certainly possible that there's valgrind but no valgrind.h. | |
504 | # GCC relies on making annotations so we must have both. | |
505 | AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) | |
506 | AC_PREPROC_IFELSE([AC_LANG_SOURCE( | |
507 | [[#include <valgrind/memcheck.h> | |
508 | #ifndef VALGRIND_DISCARD | |
509 | #error VALGRIND_DISCARD not defined | |
510 | #endif]])], | |
511 | [gcc_cv_header_valgrind_memcheck_h=yes], | |
512 | [gcc_cv_header_valgrind_memcheck_h=no]) | |
513 | AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) | |
514 | AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) | |
515 | AC_PREPROC_IFELSE([AC_LANG_SOURCE( | |
516 | [[#include <memcheck.h> | |
517 | #ifndef VALGRIND_DISCARD | |
518 | #error VALGRIND_DISCARD not defined | |
519 | #endif]])], | |
520 | [gcc_cv_header_memcheck_h=yes], | |
521 | [gcc_cv_header_memcheck_h=no]) | |
522 | AC_MSG_RESULT($gcc_cv_header_memcheck_h) | |
523 | AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, | |
524 | [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) | |
525 | if test "x$valgrind_path" = "x" \ | |
526 | || (test $have_valgrind_h = no \ | |
527 | && test $gcc_cv_header_memcheck_h = no \ | |
528 | && test $gcc_cv_header_valgrind_memcheck_h = no); then | |
529 | AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) | |
530 | fi | |
531 | valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' | |
532 | valgrind_command="$valgrind_path -q" | |
533 | AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, | |
534 | [Define if you want to run subprograms and generated programs | |
535 | through valgrind (a memory checker). This is extremely expensive.]) | |
536 | if test $gcc_cv_header_valgrind_memcheck_h = yes; then | |
537 | AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, | |
538 | [Define if valgrind's valgrind/memcheck.h header is installed.]) | |
539 | fi | |
540 | if test $gcc_cv_header_memcheck_h = yes; then | |
541 | AC_DEFINE(HAVE_MEMCHECK_H, 1, | |
542 | [Define if valgrind's memcheck.h header is installed.]) | |
543 | fi | |
544 | fi | |
545 | AC_SUBST(valgrind_path_defines) | |
546 | AC_SUBST(valgrind_command) | |
547 | ||
548 | # Enable code coverage collection | |
549 | AC_ARG_ENABLE(coverage, | |
550 | [ --enable-coverage[=LEVEL] | |
551 | enable compiler's code coverage collection. | |
552 | Use to measure compiler performance and locate | |
553 | unused parts of the compiler. With LEVEL, specify | |
554 | optimization. Values are opt, noopt, | |
555 | default is noopt], | |
556 | [case "${enableval}" in | |
557 | yes|noopt) | |
558 | coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0" | |
559 | ;; | |
560 | opt) | |
561 | coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2" | |
562 | ;; | |
563 | no) | |
564 | # a.k.a. --disable-coverage | |
565 | coverage_flags="" | |
566 | ;; | |
567 | *) | |
568 | AC_MSG_ERROR(unknown coverage setting $enableval) | |
569 | ;; | |
570 | esac], | |
571 | [coverage_flags=""]) | |
572 | AC_SUBST(coverage_flags) | |
573 | ||
574 | AC_ARG_ENABLE(gather-detailed-mem-stats, | |
575 | [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [], | |
576 | [enable_gather_detailed_mem_stats=no]) | |
577 | if test x$enable_gather_detailed_mem_stats = xyes ; then | |
578 | AC_DEFINE(GATHER_STATISTICS, 1, | |
579 | [Define to enable detailed memory allocation stats gathering.]) | |
580 | fi | |
581 | ||
582 | # ------------------------------- | |
583 | # Miscenalleous configure options | |
584 | # ------------------------------- | |
585 | ||
586 | # See if we are building gcc with C++. | |
587 | AC_ARG_ENABLE(build-with-cxx, | |
588 | [ --enable-build-with-cxx build with C++ compiler instead of C compiler], | |
589 | ENABLE_BUILD_WITH_CXX=$enableval, | |
590 | ENABLE_BUILD_WITH_CXX=no) | |
591 | AC_SUBST(ENABLE_BUILD_WITH_CXX) | |
592 | ||
593 | # With stabs | |
594 | AC_ARG_WITH(stabs, | |
595 | [ --with-stabs arrange to use stabs instead of host debug format], | |
596 | stabs="$with_stabs", | |
597 | stabs=no) | |
598 | ||
599 | # Determine whether or not multilibs are enabled. | |
600 | AC_ARG_ENABLE(multilib, | |
601 | [ --enable-multilib enable library support for multiple ABIs], | |
602 | [], [enable_multilib=yes]) | |
603 | AC_SUBST(enable_multilib) | |
604 | ||
605 | # Enable __cxa_atexit for C++. | |
606 | AC_ARG_ENABLE(__cxa_atexit, | |
607 | [ --enable-__cxa_atexit enable __cxa_atexit for C++], | |
608 | [], []) | |
609 | ||
610 | # Enable C extension for decimal float if target supports it. | |
611 | GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) | |
612 | ||
613 | dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` | |
614 | AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, | |
615 | [Define to 1 to enable decimal float extension to C.]) | |
616 | ||
617 | # Use default_decimal_float for dependency. | |
618 | enable_decimal_float=$default_decimal_float | |
619 | ||
620 | bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` | |
621 | AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, | |
622 | [Define to 1 to specify that we are using the BID decimal floating | |
623 | point format instead of DPD]) | |
624 | ||
625 | # Enable C extension for fixed-point arithmetic. | |
626 | AC_ARG_ENABLE(fixed-point, | |
627 | [ --enable-fixed-point enable fixed-point arithmetic extension to C], | |
628 | [ | |
629 | ], | |
630 | [ | |
631 | case $target in | |
632 | mips*-*-*) | |
633 | case $host in | |
634 | mips*-sgi-irix*) | |
635 | AC_MSG_WARN([fixed-point is not supported on IRIX, ignored]) | |
636 | enable_fixed_point=no | |
637 | ;; | |
638 | *) | |
639 | enable_fixed_point=yes | |
640 | ;; | |
641 | esac | |
642 | ;; | |
643 | *) | |
644 | AC_MSG_WARN([fixed-point is not supported for this target, ignored]) | |
645 | enable_fixed_point=no | |
646 | ;; | |
647 | esac | |
648 | ]) | |
649 | AC_SUBST(enable_fixed_point) | |
650 | ||
651 | fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` | |
652 | AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, | |
653 | [Define to 1 to enable fixed-point arithmetic extension to C.]) | |
654 | ||
655 | # Enable threads | |
656 | # Pass with no value to take the default | |
657 | # Pass with a value to specify a thread package | |
658 | AC_ARG_ENABLE(threads, | |
659 | [ --enable-threads enable thread usage for target GCC | |
660 | --enable-threads=LIB use LIB thread package for target GCC],, | |
661 | [enable_threads='']) | |
662 | ||
663 | AC_ARG_ENABLE(tls, | |
664 | [ --enable-tls enable or disable generation of tls code | |
665 | overriding the assembler check for tls support], | |
666 | [ | |
667 | case $enable_tls in | |
668 | yes | no) ;; | |
669 | *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. | |
670 | Valid choices are 'yes' and 'no'.]) ;; | |
671 | esac | |
672 | ], [enable_tls='']) | |
673 | ||
674 | AC_ARG_ENABLE(objc-gc, | |
675 | [ --enable-objc-gc enable the use of Boehm's garbage collector with | |
676 | the GNU Objective-C runtime], | |
677 | if test x$enable_objc_gc = xno; then | |
678 | objc_boehm_gc='' | |
679 | else | |
680 | objc_boehm_gc=1 | |
681 | fi, | |
682 | objc_boehm_gc='') | |
683 | ||
684 | AC_ARG_WITH(dwarf2, | |
685 | [ --with-dwarf2 force the default debug format to be DWARF 2], | |
686 | dwarf2="$with_dwarf2", | |
687 | dwarf2=no) | |
688 | ||
689 | AC_ARG_ENABLE(shared, | |
690 | [ --disable-shared don't provide a shared libgcc], | |
691 | [ | |
692 | case $enable_shared in | |
693 | yes | no) ;; | |
694 | *) | |
695 | enable_shared=no | |
696 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," | |
697 | for pkg in $enableval; do | |
698 | if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then | |
699 | enable_shared=yes | |
700 | fi | |
701 | done | |
702 | IFS="$ac_save_ifs" | |
703 | ;; | |
704 | esac | |
705 | ], [enable_shared=yes]) | |
706 | AC_SUBST(enable_shared) | |
707 | ||
708 | AC_ARG_WITH(build-sysroot, | |
709 | [ --with-build-sysroot=sysroot | |
710 | use sysroot as the system root during the build]) | |
711 | ||
712 | AC_ARG_WITH(sysroot, | |
713 | [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.], | |
714 | [ | |
715 | case ${with_sysroot} in | |
716 | yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; | |
717 | *) TARGET_SYSTEM_ROOT=$with_sysroot ;; | |
718 | esac | |
719 | ||
720 | TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' | |
721 | CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' | |
722 | ||
723 | if test "x$prefix" = xNONE; then | |
724 | test_prefix=/usr/local | |
725 | else | |
726 | test_prefix=$prefix | |
727 | fi | |
728 | if test "x$exec_prefix" = xNONE; then | |
729 | test_exec_prefix=$test_prefix | |
730 | else | |
731 | test_exec_prefix=$exec_prefix | |
732 | fi | |
733 | case ${TARGET_SYSTEM_ROOT} in | |
734 | "${test_prefix}"|"${test_prefix}/"*|\ | |
735 | "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ | |
736 | '${prefix}'|'${prefix}/'*|\ | |
737 | '${exec_prefix}'|'${exec_prefix}/'*) | |
738 | t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" | |
739 | TARGET_SYSTEM_ROOT_DEFINE="$t" | |
740 | ;; | |
741 | esac | |
742 | ], [ | |
743 | TARGET_SYSTEM_ROOT= | |
744 | TARGET_SYSTEM_ROOT_DEFINE= | |
745 | CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' | |
746 | ]) | |
747 | AC_SUBST(TARGET_SYSTEM_ROOT) | |
748 | AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) | |
749 | AC_SUBST(CROSS_SYSTEM_HEADER_DIR) | |
750 | ||
751 | AC_ARG_WITH(specs, | |
752 | [AS_HELP_STRING([--with-specs=SPECS], | |
753 | [add SPECS to driver command-line processing])], | |
754 | [CONFIGURE_SPECS=$withval], | |
755 | [CONFIGURE_SPECS=] | |
756 | ) | |
757 | AC_SUBST(CONFIGURE_SPECS) | |
758 | ||
759 | ACX_PKGVERSION([GCC]) | |
760 | ACX_BUGURL([http://gcc.gnu.org/bugs.html]) | |
761 | ||
762 | # Sanity check enable_languages in case someone does not run the toplevel | |
763 | # configure # script. | |
764 | AC_ARG_ENABLE(languages, | |
765 | [ --enable-languages=LIST specify which front-ends to build], | |
766 | [case ,${enable_languages}, in | |
767 | ,,|,yes,) | |
768 | # go safe -- we cannot be much sure without the toplevel | |
769 | # configure's | |
770 | # analysis of which target libs are present and usable | |
771 | enable_languages=c | |
772 | ;; | |
773 | *,all,*) | |
774 | AC_MSG_ERROR([only the toplevel supports --enable-languages=all]) | |
775 | ;; | |
776 | *,c,*) | |
777 | ;; | |
778 | *) | |
779 | enable_languages=c,${enable_languages} | |
780 | ;; | |
781 | esac], | |
782 | [enable_languages=c]) | |
783 | ||
784 | AC_ARG_WITH(multilib-list, | |
785 | [ --with-multilib-list Select multilibs (SH only)], | |
786 | :, | |
787 | with_multilib_list=default) | |
788 | ||
789 | # ------------------------- | |
790 | # Checks for other programs | |
791 | # ------------------------- | |
792 | ||
793 | AC_PROG_MAKE_SET | |
794 | ||
795 | # Find some useful tools | |
796 | AC_PROG_AWK | |
797 | # We need awk to create options.c and options.h. | |
798 | # Bail out if it's missing. | |
799 | case ${AWK} in | |
800 | "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
801 | esac | |
802 | ||
803 | gcc_AC_PROG_LN_S | |
804 | ACX_PROG_LN($LN_S) | |
805 | AC_PROG_RANLIB | |
806 | case "${host}" in | |
807 | *-*-darwin*) | |
808 | # By default, the Darwin ranlib will not treat common symbols as | |
809 | # definitions when building the archive table of contents. Other | |
810 | # ranlibs do that; pass an option to the Darwin ranlib that makes | |
811 | # it behave similarly. | |
812 | ranlib_flags="-c" | |
813 | ;; | |
814 | *) | |
815 | ranlib_flags="" | |
816 | esac | |
817 | AC_SUBST(ranlib_flags) | |
818 | ||
819 | gcc_AC_PROG_INSTALL | |
820 | ||
821 | # See if cmp has --ignore-initial. | |
822 | gcc_AC_PROG_CMP_IGNORE_INITIAL | |
823 | ||
824 | # See if we have the mktemp command. | |
825 | AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) | |
826 | ||
827 | # See if makeinfo has been installed and is modern enough | |
828 | # that we can use it. | |
829 | ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, | |
830 | [GNU texinfo.* \([0-9][0-9.]*\)], | |
831 | [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) | |
832 | if test $gcc_cv_prog_makeinfo_modern = no; then | |
833 | AC_MSG_WARN([ | |
834 | *** Makeinfo is missing or too old. | |
835 | *** Info documentation will not be built.]) | |
836 | BUILD_INFO= | |
837 | else | |
838 | BUILD_INFO=info | |
839 | fi | |
840 | AC_SUBST(BUILD_INFO) | |
841 | ||
842 | # Is pod2man recent enough to regenerate manpages? | |
843 | AC_MSG_CHECKING([for recent Pod::Man]) | |
844 | if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then | |
845 | AC_MSG_RESULT(yes) | |
846 | GENERATED_MANPAGES=generated-manpages | |
847 | else | |
848 | AC_MSG_RESULT(no) | |
849 | GENERATED_MANPAGES= | |
850 | fi | |
851 | AC_SUBST(GENERATED_MANPAGES) | |
852 | ||
853 | MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" | |
854 | ||
855 | # How about lex? | |
856 | dnl Don't use AC_PROG_LEX; we insist on flex. | |
857 | dnl LEXLIB is not useful in gcc. | |
858 | AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) | |
859 | ||
860 | # Bison? | |
861 | AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) | |
862 | ||
863 | # Binutils are not build modules, unlike bison/flex/makeinfo. So we | |
864 | # check for build == host before using them. | |
865 | ||
866 | # NM | |
867 | if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ | |
868 | && test -d ../binutils ; then | |
869 | NM='${objdir}/../binutils/nm-new' | |
870 | else | |
871 | AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) | |
872 | fi | |
873 | ||
874 | # AR | |
875 | if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ | |
876 | && test -d ../binutils ; then | |
877 | AR='${objdir}/../binutils/ar' | |
878 | else | |
879 | AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) | |
880 | fi | |
881 | ||
882 | ||
883 | # -------------------- | |
884 | # Checks for C headers | |
885 | # -------------------- | |
886 | ||
887 | # Need to reject headers which give warnings, so that the -Werror bootstrap | |
888 | # works later. *sigh* This needs to come before all header checks. | |
889 | AC_PROG_CPP_WERROR | |
890 | ||
891 | AC_HEADER_STDC | |
892 | AC_HEADER_TIME | |
893 | ACX_HEADER_STRING | |
894 | AC_HEADER_SYS_WAIT | |
895 | AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ | |
896 | fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \ | |
897 | sys/resource.h sys/param.h sys/times.h sys/stat.h \ | |
898 | direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) | |
899 | ||
900 | # Check for thread headers. | |
901 | AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) | |
902 | AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) | |
903 | ||
904 | # These tests can't be done till we know if we have limits.h. | |
905 | gcc_AC_C_CHAR_BIT | |
906 | AC_C_BIGENDIAN | |
907 | ||
908 | # -------- | |
909 | # UNSORTED | |
910 | # -------- | |
911 | ||
912 | ||
913 | # These libraries may be used by collect2. | |
914 | # We may need a special search path to get them linked. | |
915 | AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, | |
916 | [save_LIBS="$LIBS" | |
917 | for libs in '' -lld -lmld \ | |
918 | '-L/usr/lib/cmplrs/cc2.11 -lmld' \ | |
919 | '-L/usr/lib/cmplrs/cc3.11 -lmld' | |
920 | do | |
921 | LIBS="$libs" | |
922 | AC_TRY_LINK_FUNC(ldopen, | |
923 | [gcc_cv_collect2_libs="$libs"; break]) | |
924 | done | |
925 | LIBS="$save_LIBS" | |
926 | test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) | |
927 | case $gcc_cv_collect2_libs in | |
928 | "none required") ;; | |
929 | *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; | |
930 | esac | |
931 | AC_SUBST(COLLECT2_LIBS) | |
932 | ||
933 | # When building Ada code on Alpha, we need exc_resume which is usually in | |
934 | # -lexc. So test for it. | |
935 | save_LIBS="$LIBS" | |
936 | LIBS= | |
937 | AC_SEARCH_LIBS(exc_resume, exc) | |
938 | GNAT_LIBEXC="$LIBS" | |
939 | LIBS="$save_LIBS" | |
940 | AC_SUBST(GNAT_LIBEXC) | |
941 | ||
942 | # Some systems put ldexp and frexp in libm instead of libc; assume | |
943 | # they're both in the same place. jcf-dump needs them. | |
944 | save_LIBS="$LIBS" | |
945 | LIBS= | |
946 | AC_SEARCH_LIBS(ldexp, m) | |
947 | LDEXP_LIB="$LIBS" | |
948 | LIBS="$save_LIBS" | |
949 | AC_SUBST(LDEXP_LIB) | |
950 | ||
951 | # Use <inttypes.h> only if it exists, | |
952 | # doesn't clash with <sys/types.h>, and declares intmax_t. | |
953 | AC_MSG_CHECKING(for inttypes.h) | |
954 | AC_CACHE_VAL(gcc_cv_header_inttypes_h, | |
955 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( | |
956 | [[#include <sys/types.h> | |
957 | #include <inttypes.h>]], | |
958 | [[intmax_t i = -1;]])], | |
959 | [gcc_cv_header_inttypes_h=yes], | |
960 | [gcc_cv_header_inttypes_h=no])]) | |
961 | AC_MSG_RESULT($gcc_cv_header_inttypes_h) | |
962 | if test $gcc_cv_header_inttypes_h = yes; then | |
963 | AC_DEFINE(HAVE_INTTYPES_H, 1, | |
964 | [Define if you have a working <inttypes.h> header file.]) | |
965 | fi | |
966 | ||
967 | dnl Disabled until we have a complete test for buggy enum bitfields. | |
968 | dnl gcc_AC_C_ENUM_BF_UNSIGNED | |
969 | ||
970 | define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl | |
971 | ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl | |
972 | fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl | |
973 | fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl | |
974 | putchar_unlocked putc_unlocked) | |
975 | AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \ | |
976 | sysconf strsignal getrusage nl_langinfo \ | |
977 | gettimeofday mbstowcs wcswidth mmap mincore setlocale \ | |
978 | gcc_UNLOCKED_FUNCS) | |
979 | ||
980 | if test x$ac_cv_func_mbstowcs = xyes; then | |
981 | AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, | |
982 | [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h> | |
983 | int main() | |
984 | { | |
985 | mbstowcs(0, "", 0); | |
986 | return 0; | |
987 | }]])], | |
988 | [gcc_cv_func_mbstowcs_works=yes], | |
989 | [gcc_cv_func_mbstowcs_works=no], | |
990 | [gcc_cv_func_mbstowcs_works=yes])]) | |
991 | if test x$gcc_cv_func_mbstowcs_works = xyes; then | |
992 | AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, | |
993 | [Define this macro if mbstowcs does not crash when its | |
994 | first argument is NULL.]) | |
995 | fi | |
996 | fi | |
997 | ||
998 | AC_CHECK_TYPE(ssize_t, int) | |
999 | AC_CHECK_TYPE(caddr_t, char *) | |
1000 | ||
1001 | gcc_AC_FUNC_MMAP_BLACKLIST | |
1002 | ||
1003 | case "${host}" in | |
1004 | *-*-*vms*) | |
1005 | # Under VMS, vfork works very differently than on Unix. The standard test | |
1006 | # won't work, and it isn't easily adaptable. It makes more sense to | |
1007 | # just force it. | |
1008 | ac_cv_func_vfork_works=yes | |
1009 | ;; | |
1010 | esac | |
1011 | AC_FUNC_FORK | |
1012 | ||
1013 | AM_ICONV | |
1014 | # Until we have in-tree GNU iconv: | |
1015 | LIBICONV_DEP= | |
1016 | AC_SUBST(LIBICONV_DEP) | |
1017 | ||
1018 | AM_LC_MESSAGES | |
1019 | ||
1020 | AM_LANGINFO_CODESET | |
1021 | ||
1022 | # We will need to find libiberty.h and ansidecl.h | |
1023 | saved_CFLAGS="$CFLAGS" | |
1024 | CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include" | |
1025 | gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \ | |
1026 | strsignal strstr strverscmp \ | |
1027 | errno snprintf vsnprintf vasprintf malloc realloc calloc \ | |
1028 | free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[ | |
1029 | #include "ansidecl.h" | |
1030 | #include "system.h"]) | |
1031 | ||
1032 | gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ | |
1033 | #include "ansidecl.h" | |
1034 | #include "system.h" | |
1035 | #ifdef HAVE_SYS_RESOURCE_H | |
1036 | #include <sys/resource.h> | |
1037 | #endif | |
1038 | ]) | |
1039 | ||
1040 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1041 | #include "ansidecl.h" | |
1042 | #include "system.h" | |
1043 | #ifdef HAVE_SYS_RESOURCE_H | |
1044 | #include <sys/resource.h> | |
1045 | #endif | |
1046 | ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], | |
1047 | [Define to `long' if <sys/resource.h> doesn't define.])]) | |
1048 | ||
1049 | # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible | |
1050 | # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname | |
1051 | # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs | |
1052 | # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME. | |
1053 | gcc_AC_CHECK_DECLS(ldgetname, , ,[ | |
1054 | #include "ansidecl.h" | |
1055 | #include "system.h" | |
1056 | #ifdef HAVE_LDFCN_H | |
1057 | #undef FREAD | |
1058 | #undef FWRITE | |
1059 | #include <ldfcn.h> | |
1060 | #endif | |
1061 | ]) | |
1062 | ||
1063 | gcc_AC_CHECK_DECLS(times, , ,[ | |
1064 | #include "ansidecl.h" | |
1065 | #include "system.h" | |
1066 | #ifdef HAVE_SYS_TIMES_H | |
1067 | #include <sys/times.h> | |
1068 | #endif | |
1069 | ]) | |
1070 | ||
1071 | gcc_AC_CHECK_DECLS(sigaltstack, , ,[ | |
1072 | #include "ansidecl.h" | |
1073 | #include "system.h" | |
1074 | #include <signal.h> | |
1075 | ]) | |
1076 | ||
1077 | # More time-related stuff. | |
1078 | AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ | |
1079 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1080 | #include "ansidecl.h" | |
1081 | #include "system.h" | |
1082 | #ifdef HAVE_SYS_TIMES_H | |
1083 | #include <sys/times.h> | |
1084 | #endif | |
1085 | ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) | |
1086 | if test $ac_cv_struct_tms = yes; then | |
1087 | AC_DEFINE(HAVE_STRUCT_TMS, 1, | |
1088 | [Define if <sys/times.h> defines struct tms.]) | |
1089 | fi | |
1090 | ||
1091 | # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. | |
1092 | # revisit after autoconf 2.50. | |
1093 | AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ | |
1094 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1095 | #include "ansidecl.h" | |
1096 | #include "system.h" | |
1097 | ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) | |
1098 | if test $gcc_cv_type_clock_t = yes; then | |
1099 | AC_DEFINE(HAVE_CLOCK_T, 1, | |
1100 | [Define if <time.h> defines clock_t.]) | |
1101 | fi | |
1102 | ||
1103 | # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. | |
1104 | CFLAGS="$saved_CFLAGS" | |
1105 | ||
1106 | gcc_AC_INITFINI_ARRAY | |
1107 | ||
1108 | # mkdir takes a single argument on some systems. | |
1109 | gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG | |
1110 | ||
1111 | # File extensions | |
1112 | manext='.1' | |
1113 | objext='.o' | |
1114 | AC_SUBST(manext) | |
1115 | AC_SUBST(objext) | |
1116 | ||
1117 | # With Setjmp/Longjmp based exception handling. | |
1118 | AC_ARG_ENABLE(sjlj-exceptions, | |
1119 | [ --enable-sjlj-exceptions | |
1120 | arrange to use setjmp/longjmp exception handling], | |
1121 | [case $target in | |
1122 | *-*-hpux10*) | |
1123 | if test $enableval != yes; then | |
1124 | AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) | |
1125 | enableval=yes | |
1126 | fi | |
1127 | ;; | |
1128 | esac | |
1129 | force_sjlj_exceptions=yes], | |
1130 | [case $target in | |
1131 | *-*-hpux10*) | |
1132 | force_sjlj_exceptions=yes | |
1133 | enableval=yes | |
1134 | ;; | |
1135 | *) | |
1136 | force_sjlj_exceptions=no | |
1137 | ;; | |
1138 | esac]) | |
1139 | if test $force_sjlj_exceptions = yes; then | |
1140 | sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` | |
1141 | AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, | |
1142 | [Define 0/1 to force the choice for exception handling model.]) | |
1143 | fi | |
1144 | ||
1145 | # For platforms with the unwind ABI which includes an unwind library, | |
1146 | # libunwind, we can choose to use the system libunwind. | |
1147 | # config.gcc also contains tests of with_system_libunwind. | |
1148 | GCC_CHECK_UNWIND_GETIPINFO | |
1149 | ||
1150 | # -------------------------------------------------------- | |
1151 | # Build, host, and target specific configuration fragments | |
1152 | # -------------------------------------------------------- | |
1153 | ||
1154 | # Collect build-machine-specific information. | |
1155 | . ${srcdir}/config.build | |
1156 | ||
1157 | # Collect host-machine-specific information. | |
1158 | . ${srcdir}/config.host | |
1159 | ||
1160 | target_gtfiles= | |
1161 | ||
1162 | # Collect target-machine-specific information. | |
1163 | . ${srcdir}/config.gcc | |
1164 | ||
1165 | extra_objs="${host_extra_objs} ${extra_objs}" | |
1166 | extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" | |
1167 | ||
1168 | # Default the target-machine variables that were not explicitly set. | |
1169 | if test x"$tm_file" = x | |
1170 | then tm_file=$cpu_type/$cpu_type.h; fi | |
1171 | ||
1172 | if test x"$extra_headers" = x | |
1173 | then extra_headers=; fi | |
1174 | ||
1175 | if test x$md_file = x | |
1176 | then md_file=$cpu_type/$cpu_type.md; fi | |
1177 | ||
1178 | if test x$out_file = x | |
1179 | then out_file=$cpu_type/$cpu_type.c; fi | |
1180 | ||
1181 | if test x"$tmake_file" = x | |
1182 | then tmake_file=$cpu_type/t-$cpu_type | |
1183 | fi | |
1184 | ||
1185 | if test x"$dwarf2" = xyes | |
1186 | then tm_file="$tm_file tm-dwarf2.h" | |
1187 | fi | |
1188 | ||
1189 | # Say what files are being used for the output code and MD file. | |
1190 | echo "Using \`$srcdir/config/$out_file' for machine-specific logic." | |
1191 | echo "Using \`$srcdir/config/$md_file' as machine description file." | |
1192 | ||
1193 | # If any of the xm_file variables contain nonexistent files, warn | |
1194 | # about them and drop them. | |
1195 | ||
1196 | bx= | |
1197 | for x in $build_xm_file; do | |
1198 | if test -f $srcdir/config/$x | |
1199 | then bx="$bx $x" | |
1200 | else AC_MSG_WARN($srcdir/config/$x does not exist.) | |
1201 | fi | |
1202 | done | |
1203 | build_xm_file="$bx" | |
1204 | ||
1205 | hx= | |
1206 | for x in $host_xm_file; do | |
1207 | if test -f $srcdir/config/$x | |
1208 | then hx="$hx $x" | |
1209 | else AC_MSG_WARN($srcdir/config/$x does not exist.) | |
1210 | fi | |
1211 | done | |
1212 | host_xm_file="$hx" | |
1213 | ||
1214 | tx= | |
1215 | for x in $xm_file; do | |
1216 | if test -f $srcdir/config/$x | |
1217 | then tx="$tx $x" | |
1218 | else AC_MSG_WARN($srcdir/config/$x does not exist.) | |
1219 | fi | |
1220 | done | |
1221 | xm_file="$tx" | |
1222 | ||
1223 | count=a | |
1224 | for f in $tm_file; do | |
1225 | count=${count}x | |
1226 | done | |
1227 | if test $count = ax; then | |
1228 | echo "Using \`$srcdir/config/$tm_file' as target machine macro file." | |
1229 | else | |
1230 | echo "Using the following target machine macro files:" | |
1231 | for f in $tm_file; do | |
1232 | echo " $srcdir/config/$f" | |
1233 | done | |
1234 | fi | |
1235 | ||
1236 | if test x$need_64bit_hwint = xyes; then | |
1237 | AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1, | |
1238 | [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).]) | |
1239 | fi | |
1240 | ||
1241 | if test x$use_long_long_for_widest_fast_int = xyes; then | |
1242 | AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, | |
1243 | [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still | |
1244 | efficiently supported by the host hardware.]) | |
1245 | fi | |
1246 | ||
1247 | count=a | |
1248 | for f in $host_xm_file; do | |
1249 | count=${count}x | |
1250 | done | |
1251 | if test $count = a; then | |
1252 | : | |
1253 | elif test $count = ax; then | |
1254 | echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." | |
1255 | else | |
1256 | echo "Using the following host machine macro files:" | |
1257 | for f in $host_xm_file; do | |
1258 | echo " $srcdir/config/$f" | |
1259 | done | |
1260 | fi | |
1261 | echo "Using ${out_host_hook_obj} for host machine hooks." | |
1262 | ||
1263 | if test "$host_xm_file" != "$build_xm_file"; then | |
1264 | count=a | |
1265 | for f in $build_xm_file; do | |
1266 | count=${count}x | |
1267 | done | |
1268 | if test $count = a; then | |
1269 | : | |
1270 | elif test $count = ax; then | |
1271 | echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." | |
1272 | else | |
1273 | echo "Using the following build machine macro files:" | |
1274 | for f in $build_xm_file; do | |
1275 | echo " $srcdir/config/$f" | |
1276 | done | |
1277 | fi | |
1278 | fi | |
1279 | ||
1280 | case ${host} in | |
1281 | powerpc*-*-darwin*) | |
1282 | AC_CACHE_CHECK([whether mcontext_t fields have underscores], | |
1283 | gcc_cv_mcontext_underscores, | |
1284 | AC_COMPILE_IFELSE([ | |
1285 | #include <sys/cdefs.h> | |
1286 | #include <sys/signal.h> | |
1287 | #include <ucontext.h> | |
1288 | int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } | |
1289 | ], | |
1290 | gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) | |
1291 | if test $gcc_cv_mcontext_underscores = yes; then | |
1292 | AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl | |
1293 | [mcontext_t fields start with __]) | |
1294 | fi | |
1295 | ;; | |
1296 | esac | |
1297 | ||
1298 | # --------- | |
1299 | # Threading | |
1300 | # --------- | |
1301 | ||
1302 | # Check if a valid thread package | |
1303 | case ${enable_threads} in | |
1304 | "" | no) | |
1305 | # No threads | |
1306 | target_thread_file='single' | |
1307 | ;; | |
1308 | yes) | |
1309 | # default | |
1310 | target_thread_file='single' | |
1311 | ;; | |
1312 | aix | dce | gnat | irix | posix | posix95 | rtems | \ | |
1313 | single | solaris | vxworks | win32 | mipssde) | |
1314 | target_thread_file=${enable_threads} | |
1315 | ;; | |
1316 | *) | |
1317 | echo "${enable_threads} is an unknown thread package" 1>&2 | |
1318 | exit 1 | |
1319 | ;; | |
1320 | esac | |
1321 | ||
1322 | if test x${thread_file} = x; then | |
1323 | # No thread file set by target-specific clauses in config.gcc, | |
1324 | # so use file chosen by default logic above | |
1325 | thread_file=${target_thread_file} | |
1326 | fi | |
1327 | ||
1328 | # Make gthr-default.h if we have a thread file. | |
1329 | gthread_flags= | |
1330 | if test $thread_file != single; then | |
1331 | echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t | |
1332 | if diff gthr-default.h-t gthr-default.h 2>/dev/null; then | |
1333 | rm -f gthr-default.h-t | |
1334 | else | |
1335 | mv -f gthr-default.h-t gthr-default.h | |
1336 | fi | |
1337 | gthread_flags=-DHAVE_GTHR_DEFAULT | |
1338 | fi | |
1339 | AC_SUBST(gthread_flags) | |
1340 | ||
1341 | # -------- | |
1342 | # UNSORTED | |
1343 | # -------- | |
1344 | ||
1345 | use_cxa_atexit=no | |
1346 | if test x$enable___cxa_atexit = xyes || \ | |
1347 | test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then | |
1348 | if test x$host = x$target; then | |
1349 | case $host in | |
1350 | # mingw32 doesn't have __cxa_atexit but uses atexit registration | |
1351 | # keyed to flag_use_cxa_atexit | |
1352 | *-*-mingw32*) | |
1353 | use_cxa_atexit=yes | |
1354 | ;; | |
1355 | *) | |
1356 | AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], | |
1357 | [echo "__cxa_atexit can't be enabled on this target"]) | |
1358 | ;; | |
1359 | esac | |
1360 | else | |
1361 | # We can't check for __cxa_atexit when building a cross, so assume | |
1362 | # it is available | |
1363 | use_cxa_atexit=yes | |
1364 | fi | |
1365 | if test x$use_cxa_atexit = xyes; then | |
1366 | AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, | |
1367 | [Define if you want to use __cxa_atexit, rather than atexit, to | |
1368 | register C++ destructors for local statics and global objects. | |
1369 | This is essential for fully standards-compliant handling of | |
1370 | destructors, but requires __cxa_atexit in libc.]) | |
1371 | fi | |
1372 | fi | |
1373 | ||
1374 | # Look for a file containing extra machine modes. | |
1375 | if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then | |
1376 | extra_modes_file='$(srcdir)'/config/${extra_modes} | |
1377 | AC_SUBST(extra_modes_file) | |
1378 | AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", | |
1379 | [Define to the name of a file containing a list of extra machine modes | |
1380 | for this architecture.]) | |
1381 | fi | |
1382 | ||
1383 | # Convert extra_options into a form suitable for Makefile use. | |
1384 | extra_opt_files= | |
1385 | for f in $extra_options; do | |
1386 | extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" | |
1387 | done | |
1388 | AC_SUBST(extra_opt_files) | |
1389 | ||
1390 | # auto-host.h is the file containing items generated by autoconf and is | |
1391 | # the first file included by config.h. | |
1392 | # If host=build, it is correct to have bconfig include auto-host.h | |
1393 | # as well. If host!=build, we are in error and need to do more | |
1394 | # work to find out the build config parameters. | |
1395 | if test x$host = x$build | |
1396 | then | |
1397 | build_auto=auto-host.h | |
1398 | else | |
1399 | # We create a subdir, then run autoconf in the subdir. | |
1400 | # To prevent recursion we set host and build for the new | |
1401 | # invocation of configure to the build for this invocation | |
1402 | # of configure. | |
1403 | tempdir=build.$$ | |
1404 | rm -rf $tempdir | |
1405 | mkdir $tempdir | |
1406 | cd $tempdir | |
1407 | case ${srcdir} in | |
1408 | /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; | |
1409 | *) realsrcdir=../${srcdir};; | |
1410 | esac | |
1411 | saved_CFLAGS="${CFLAGS}" | |
1412 | CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ | |
1413 | LDFLAGS="${LDFLAGS_FOR_BUILD}" \ | |
1414 | ${realsrcdir}/configure \ | |
1415 | --enable-languages=${enable_languages-all} \ | |
1416 | --target=$target_alias --host=$build_alias --build=$build_alias | |
1417 | CFLAGS="${saved_CFLAGS}" | |
1418 | ||
1419 | # We just finished tests for the build machine, so rename | |
1420 | # the file auto-build.h in the gcc directory. | |
1421 | mv auto-host.h ../auto-build.h | |
1422 | cd .. | |
1423 | rm -rf $tempdir | |
1424 | build_auto=auto-build.h | |
1425 | fi | |
1426 | AC_SUBST(build_subdir) | |
1427 | ||
1428 | tm_file="${tm_file} defaults.h" | |
1429 | tm_p_file="${tm_p_file} tm-preds.h" | |
1430 | host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" | |
1431 | build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" | |
1432 | # We don't want ansidecl.h in target files, write code there in ISO/GNU C. | |
1433 | # put this back in temporarily. | |
1434 | xm_file="auto-host.h ansidecl.h ${xm_file}" | |
1435 | ||
1436 | # -------- | |
1437 | # UNSORTED | |
1438 | # -------- | |
1439 | ||
1440 | changequote(,)dnl | |
1441 | # Compile in configure arguments. | |
1442 | if test -f configargs.h ; then | |
1443 | # Being re-configured. | |
1444 | gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` | |
1445 | gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" | |
1446 | else | |
1447 | gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" | |
1448 | fi | |
1449 | ||
1450 | # Double all backslashes and backslash all quotes to turn | |
1451 | # gcc_config_arguments into a C string. | |
1452 | sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out | |
1453 | $gcc_config_arguments | |
1454 | EOF | |
1455 | gcc_config_arguments_str=`cat conftest.out` | |
1456 | rm -f conftest.out | |
1457 | ||
1458 | cat > configargs.h <<EOF | |
1459 | /* Generated automatically. */ | |
1460 | static const char configuration_arguments[] = "$gcc_config_arguments_str"; | |
1461 | static const char thread_model[] = "$thread_file"; | |
1462 | ||
1463 | static const struct { | |
1464 | const char *name, *value; | |
1465 | } configure_default_options[] = $configure_default_options; | |
1466 | EOF | |
1467 | changequote([,])dnl | |
1468 | ||
1469 | changequote(,)dnl | |
1470 | gcc_BASEVER=`cat $srcdir/BASE-VER` | |
1471 | gcc_DEVPHASE=`cat $srcdir/DEV-PHASE` | |
1472 | gcc_DATESTAMP=`cat $srcdir/DATESTAMP` | |
1473 | if test -f $srcdir/REVISION ; then | |
1474 | gcc_REVISION=`cat $srcdir/REVISION` | |
1475 | else | |
1476 | gcc_REVISION="" | |
1477 | fi | |
1478 | cat > plugin-version.h <<EOF | |
1479 | #include "configargs.h" | |
1480 | ||
1481 | static char basever[] = "$gcc_BASEVER"; | |
1482 | static char datestamp[] = "$gcc_DATESTAMP"; | |
1483 | static char devphase[] = "$gcc_DEVPHASE"; | |
1484 | static char revision[] = "$gcc_REVISION"; | |
1485 | ||
1486 | /* FIXME plugins: We should make the version information more precise. | |
1487 | One way to do is to add a checksum. */ | |
1488 | ||
1489 | static struct plugin_gcc_version gcc_version = {basever, datestamp, | |
1490 | devphase, revision, | |
1491 | configuration_arguments}; | |
1492 | EOF | |
1493 | changequote([,])dnl | |
1494 | ||
1495 | # Internationalization | |
1496 | ZW_GNU_GETTEXT_SISTER_DIR | |
1497 | ||
1498 | # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get | |
1499 | # -liconv on the link line twice. | |
1500 | case "$LIBINTL" in *$LIBICONV*) | |
1501 | LIBICONV= ;; | |
1502 | esac | |
1503 | ||
1504 | AC_ARG_ENABLE(secureplt, | |
1505 | [ --enable-secureplt enable -msecure-plt by default for PowerPC], | |
1506 | [], []) | |
1507 | ||
1508 | AC_ARG_ENABLE(leading-mingw64-underscores, | |
1509 | AS_HELP_STRING([--enable-leading-mingw64-underscores], | |
1510 | [Enable leading underscores on 64 bit mingw targets]), | |
1511 | [],[]) | |
1512 | AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ], | |
1513 | [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1, | |
1514 | [Define if we should use leading underscore on 64 bit mingw targets])]) | |
1515 | ||
1516 | AC_ARG_ENABLE(cld, | |
1517 | [ --enable-cld enable -mcld by default for 32bit x86], [], | |
1518 | [enable_cld=no]) | |
1519 | ||
1520 | AC_ARG_ENABLE(frame-pointer, | |
1521 | [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [], | |
1522 | [ | |
1523 | case $target_os in | |
1524 | linux* | darwin[[8912]]*) | |
1525 | # Enable -fomit-frame-pointer by default for Linux and Darwin with | |
1526 | # DWARF2. | |
1527 | enable_frame_pointer=no | |
1528 | ;; | |
1529 | *) | |
1530 | enable_frame_pointer=yes | |
1531 | ;; | |
1532 | esac | |
1533 | ]) | |
1534 | ||
1535 | # Windows32 Registry support for specifying GCC installation paths. | |
1536 | AC_ARG_ENABLE(win32-registry, | |
1537 | [ --disable-win32-registry | |
1538 | disable lookup of installation paths in the | |
1539 | Registry on Windows hosts | |
1540 | --enable-win32-registry enable registry lookup (default) | |
1541 | --enable-win32-registry=KEY | |
1542 | use KEY instead of GCC version as the last portion | |
1543 | of the registry key],,) | |
1544 | ||
1545 | case $host_os in | |
1546 | win32 | pe | cygwin* | mingw32* | uwin*) | |
1547 | if test "x$enable_win32_registry" != xno; then | |
1548 | AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no]) | |
1549 | fi | |
1550 | ||
1551 | if test "x$enable_win32_registry" != xno; then | |
1552 | AC_DEFINE(ENABLE_WIN32_REGISTRY, 1, | |
1553 | [Define to 1 if installation paths should be looked up in the Windows | |
1554 | Registry. Ignored on non-Windows hosts.]) | |
1555 | ||
1556 | if test "x$enable_win32_registry" != xyes \ | |
1557 | && test "x$enable_win32_registry" != x; then | |
1558 | AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry", | |
1559 | [Define to be the last component of the Windows registry key under which | |
1560 | to look for installation paths. The full key used will be | |
1561 | HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}. | |
1562 | The default is the GCC version number.]) | |
1563 | fi | |
1564 | fi | |
1565 | ;; | |
1566 | esac | |
1567 | ||
1568 | # Get an absolute path to the GCC top-level source directory | |
1569 | holddir=`${PWDCMD-pwd}` | |
1570 | cd $srcdir | |
1571 | topdir=`${PWDCMD-pwd}` | |
1572 | cd $holddir | |
1573 | ||
1574 | # Conditionalize the makefile for this host machine. | |
1575 | xmake_file= | |
1576 | for f in ${host_xmake_file} | |
1577 | do | |
1578 | if test -f ${srcdir}/config/$f | |
1579 | then | |
1580 | xmake_file="${xmake_file} \$(srcdir)/config/$f" | |
1581 | fi | |
1582 | done | |
1583 | ||
1584 | # Conditionalize the makefile for this target machine. | |
1585 | tmake_file_= | |
1586 | for f in ${tmake_file} | |
1587 | do | |
1588 | if test -f ${srcdir}/config/$f | |
1589 | then | |
1590 | tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
1591 | fi | |
1592 | done | |
1593 | tmake_file="${tmake_file_}" | |
1594 | ||
1595 | out_object_file=`basename $out_file .c`.o | |
1596 | ||
1597 | tm_file_list="options.h" | |
1598 | tm_include_list="options.h insn-constants.h" | |
1599 | for f in $tm_file; do | |
1600 | case $f in | |
1601 | ./* ) | |
1602 | f=`echo $f | sed 's/^..//'` | |
1603 | tm_file_list="${tm_file_list} $f" | |
1604 | tm_include_list="${tm_include_list} $f" | |
1605 | ;; | |
1606 | defaults.h ) | |
1607 | tm_file_list="${tm_file_list} \$(srcdir)/$f" | |
1608 | tm_include_list="${tm_include_list} $f" | |
1609 | ;; | |
1610 | * ) | |
1611 | tm_file_list="${tm_file_list} \$(srcdir)/config/$f" | |
1612 | tm_include_list="${tm_include_list} config/$f" | |
1613 | ;; | |
1614 | esac | |
1615 | done | |
1616 | ||
1617 | tm_p_file_list= | |
1618 | tm_p_include_list= | |
1619 | for f in $tm_p_file; do | |
1620 | case $f in | |
1621 | tm-preds.h ) | |
1622 | tm_p_file_list="${tm_p_file_list} $f" | |
1623 | tm_p_include_list="${tm_p_include_list} $f" | |
1624 | ;; | |
1625 | * ) | |
1626 | tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" | |
1627 | tm_p_include_list="${tm_p_include_list} config/$f" | |
1628 | esac | |
1629 | done | |
1630 | ||
1631 | xm_file_list= | |
1632 | xm_include_list= | |
1633 | for f in $xm_file; do | |
1634 | case $f in | |
1635 | ansidecl.h ) | |
1636 | xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" | |
1637 | xm_include_list="${xm_include_list} $f" | |
1638 | ;; | |
1639 | auto-host.h ) | |
1640 | xm_file_list="${xm_file_list} $f" | |
1641 | xm_include_list="${xm_include_list} $f" | |
1642 | ;; | |
1643 | * ) | |
1644 | xm_file_list="${xm_file_list} \$(srcdir)/config/$f" | |
1645 | xm_include_list="${xm_include_list} config/$f" | |
1646 | ;; | |
1647 | esac | |
1648 | done | |
1649 | ||
1650 | host_xm_file_list= | |
1651 | host_xm_include_list= | |
1652 | for f in $host_xm_file; do | |
1653 | case $f in | |
1654 | ansidecl.h ) | |
1655 | host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" | |
1656 | host_xm_include_list="${host_xm_include_list} $f" | |
1657 | ;; | |
1658 | auto-host.h ) | |
1659 | host_xm_file_list="${host_xm_file_list} $f" | |
1660 | host_xm_include_list="${host_xm_include_list} $f" | |
1661 | ;; | |
1662 | * ) | |
1663 | host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" | |
1664 | host_xm_include_list="${host_xm_include_list} config/$f" | |
1665 | ;; | |
1666 | esac | |
1667 | done | |
1668 | ||
1669 | build_xm_file_list= | |
1670 | for f in $build_xm_file; do | |
1671 | case $f in | |
1672 | ansidecl.h ) | |
1673 | build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f" | |
1674 | build_xm_include_list="${build_xm_include_list} $f" | |
1675 | ;; | |
1676 | auto-build.h | auto-host.h ) | |
1677 | build_xm_file_list="${build_xm_file_list} $f" | |
1678 | build_xm_include_list="${build_xm_include_list} $f" | |
1679 | ;; | |
1680 | * ) | |
1681 | build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" | |
1682 | build_xm_include_list="${build_xm_include_list} config/$f" | |
1683 | ;; | |
1684 | esac | |
1685 | done | |
1686 | ||
1687 | # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a | |
1688 | # cross-compiler which does not use the native headers and libraries. | |
1689 | # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. | |
1690 | CROSS= AC_SUBST(CROSS) | |
1691 | ALL=all.internal AC_SUBST(ALL) | |
1692 | SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) | |
1693 | ||
1694 | if test "x$with_build_sysroot" != x; then | |
1695 | build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' | |
1696 | else | |
1697 | # This value is used, even on a native system, because | |
1698 | # CROSS_SYSTEM_HEADER_DIR is just | |
1699 | # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR). | |
1700 | build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)' | |
1701 | fi | |
1702 | ||
1703 | if test x$host != x$target | |
1704 | then | |
1705 | CROSS="-DCROSS_DIRECTORY_STRUCTURE" | |
1706 | ALL=all.cross | |
1707 | SYSTEM_HEADER_DIR=$build_system_header_dir | |
1708 | case "$host","$target" in | |
1709 | # Darwin crosses can use the host system's libraries and headers, | |
1710 | # because of the fat library support. Of course, it must be the | |
1711 | # same version of Darwin on both sides. Allow the user to | |
1712 | # just say --target=foo-darwin without a version number to mean | |
1713 | # "the version on this system". | |
1714 | *-*-darwin*,*-*-darwin*) | |
1715 | hostos=`echo $host | sed 's/.*-darwin/darwin/'` | |
1716 | targetos=`echo $target | sed 's/.*-darwin/darwin/'` | |
1717 | if test $hostos = $targetos -o $targetos = darwin ; then | |
1718 | CROSS= | |
1719 | SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' | |
1720 | with_headers=yes | |
1721 | fi | |
1722 | ;; | |
1723 | ||
1724 | i?86-*-*,x86_64-*-* \ | |
1725 | | powerpc*-*-*,powerpc64*-*-*) | |
1726 | CROSS="$CROSS -DNATIVE_CROSS" ;; | |
1727 | esac | |
1728 | ||
1729 | case $target in | |
1730 | *-*-mingw*) | |
1731 | if test "x$with_headers" = x; then | |
1732 | with_headers=yes | |
1733 | fi | |
1734 | ;; | |
1735 | *) | |
1736 | ;; | |
1737 | esac | |
1738 | elif test "x$TARGET_SYSTEM_ROOT" != x; then | |
1739 | SYSTEM_HEADER_DIR=$build_system_header_dir | |
1740 | fi | |
1741 | ||
1742 | # If this is a cross-compiler that does not | |
1743 | # have its own set of headers then define | |
1744 | # inhibit_libc | |
1745 | ||
1746 | # If this is using newlib, without having the headers available now, | |
1747 | # then define inhibit_libc in LIBGCC2_CFLAGS. | |
1748 | # This prevents libgcc2 from containing any code which requires libc | |
1749 | # support. | |
1750 | : ${inhibit_libc=false} | |
1751 | if { { test x$host != x$target && test "x$with_sysroot" = x ; } || | |
1752 | test x$with_newlib = xyes ; } && | |
1753 | { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then | |
1754 | inhibit_libc=true | |
1755 | fi | |
1756 | AC_SUBST(inhibit_libc) | |
1757 | ||
1758 | # When building gcc with a cross-compiler, we need to adjust things so | |
1759 | # that the generator programs are still built with the native compiler. | |
1760 | # Also, we cannot run fixincludes. | |
1761 | ||
1762 | # These are the normal (build=host) settings: | |
1763 | CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) | |
1764 | BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) | |
1765 | BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS) | |
1766 | STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) | |
1767 | ||
1768 | # And these apply if build != host, or we are generating coverage data | |
1769 | if test x$build != x$host || test "x$coverage_flags" != x | |
1770 | then | |
1771 | BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' | |
1772 | BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)' | |
1773 | fi | |
1774 | ||
1775 | # Expand extra_headers to include complete path. | |
1776 | # This substitutes for lots of t-* files. | |
1777 | extra_headers_list= | |
1778 | # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. | |
1779 | for file in ${extra_headers} ; do | |
1780 | extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" | |
1781 | done | |
1782 | ||
1783 | # If use_gcc_tgmath is set, append ginclude/tgmath.h. | |
1784 | if test x"$use_gcc_tgmath" = xyes | |
1785 | then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h" | |
1786 | fi | |
1787 | ||
1788 | # Define collect2 in Makefile. | |
1789 | case $host_can_use_collect2 in | |
1790 | no) collect2= ;; | |
1791 | *) collect2='collect2$(exeext)' ;; | |
1792 | esac | |
1793 | AC_SUBST([collect2]) | |
1794 | ||
1795 | # Add a definition of USE_COLLECT2 if system wants one. | |
1796 | case $use_collect2 in | |
1797 | no) use_collect2= ;; | |
1798 | "") ;; | |
1799 | *) | |
1800 | host_xm_defines="${host_xm_defines} USE_COLLECT2" | |
1801 | xm_defines="${xm_defines} USE_COLLECT2" | |
1802 | case $host_can_use_collect2 in | |
1803 | no) | |
1804 | AC_MSG_ERROR([collect2 is required but cannot be built on this system]) | |
1805 | ;; | |
1806 | esac | |
1807 | ;; | |
1808 | esac | |
1809 | ||
1810 | AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}", | |
1811 | [Define to the name of the LTO plugin DSO that must be | |
1812 | passed to the linker's -plugin=LIB option.]) | |
1813 | ||
1814 | # --------------------------- | |
1815 | # Assembler & linker features | |
1816 | # --------------------------- | |
1817 | ||
1818 | # During stage 2, ld is actually gcc/collect-ld, which is a small script to | |
1819 | # discern between when to use prev-ld/ld-new and when to use ld/ld-new. | |
1820 | # However when ld-new is first executed from the build tree, libtool will | |
1821 | # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers | |
1822 | # to the build tree. While doing this we need to use the previous-stage | |
1823 | # linker, or we have an infinite loop. The presence of a shell script as | |
1824 | # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses | |
1825 | # the gcc/collect-ld script. So we need to know how libtool works, or | |
1826 | # exec-tool will fail. | |
1827 | ||
1828 | m4_defun([_LT_CONFIG_COMMANDS], []) | |
1829 | AC_PROG_LIBTOOL | |
1830 | AC_SUBST(objdir) | |
1831 | AC_SUBST(enable_fast_install) | |
1832 | ||
1833 | # Identify the assembler which will work hand-in-glove with the newly | |
1834 | # built GCC, so that we can examine its features. This is the assembler | |
1835 | # which will be driven by the driver program. | |
1836 | # | |
1837 | # If build != host, and we aren't building gas in-tree, we identify a | |
1838 | # build->target assembler and hope that it will have the same features | |
1839 | # as the host->target assembler we'll be using. | |
1840 | gcc_cv_gas_major_version= | |
1841 | gcc_cv_gas_minor_version= | |
1842 | gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas | |
1843 | ||
1844 | m4_pattern_allow([AS_FOR_TARGET])dnl | |
1845 | AS_VAR_SET_IF(gcc_cv_as,, [ | |
1846 | if test -x "$DEFAULT_ASSEMBLER"; then | |
1847 | gcc_cv_as="$DEFAULT_ASSEMBLER" | |
1848 | elif test -f $gcc_cv_as_gas_srcdir/configure.in \ | |
1849 | && test -f ../gas/Makefile \ | |
1850 | && test x$build = x$host; then | |
1851 | gcc_cv_as=../gas/as-new$build_exeext | |
1852 | elif test -x as$build_exeext; then | |
1853 | # Build using assembler in the current directory. | |
1854 | gcc_cv_as=./as$build_exeext | |
1855 | elif test -x $AS_FOR_TARGET; then | |
1856 | gcc_cv_as="$AS_FOR_TARGET" | |
1857 | else | |
1858 | AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) | |
1859 | fi]) | |
1860 | ||
1861 | ORIGINAL_AS_FOR_TARGET=$gcc_cv_as | |
1862 | AC_SUBST(ORIGINAL_AS_FOR_TARGET) | |
1863 | case "$ORIGINAL_AS_FOR_TARGET" in | |
1864 | ./as | ./as$build_exeext) ;; | |
1865 | *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; | |
1866 | esac | |
1867 | ||
1868 | AC_MSG_CHECKING(what assembler to use) | |
1869 | if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then | |
1870 | # Single tree build which includes gas. We want to prefer it | |
1871 | # over whatever linker top-level may have detected, since | |
1872 | # we'll use what we're building after installation anyway. | |
1873 | AC_MSG_RESULT(newly built gas) | |
1874 | in_tree_gas=yes | |
1875 | _gcc_COMPUTE_GAS_VERSION | |
1876 | in_tree_gas_is_elf=no | |
1877 | if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ | |
1878 | || (grep 'obj_format = multi' ../gas/Makefile \ | |
1879 | && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null | |
1880 | then | |
1881 | in_tree_gas_is_elf=yes | |
1882 | fi | |
1883 | else | |
1884 | AC_MSG_RESULT($gcc_cv_as) | |
1885 | in_tree_gas=no | |
1886 | fi | |
1887 | ||
1888 | # Identify the linker which will work hand-in-glove with the newly | |
1889 | # built GCC, so that we can examine its features. This is the linker | |
1890 | # which will be driven by the driver program. | |
1891 | # | |
1892 | # If build != host, and we aren't building gas in-tree, we identify a | |
1893 | # build->target linker and hope that it will have the same features | |
1894 | # as the host->target linker we'll be using. | |
1895 | gcc_cv_gld_major_version= | |
1896 | gcc_cv_gld_minor_version= | |
1897 | gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld | |
1898 | gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd | |
1899 | ||
1900 | AS_VAR_SET_IF(gcc_cv_ld,, [ | |
1901 | if test -x "$DEFAULT_LINKER"; then | |
1902 | gcc_cv_ld="$DEFAULT_LINKER" | |
1903 | elif test -f $gcc_cv_ld_gld_srcdir/configure.in \ | |
1904 | && test -f ../ld/Makefile \ | |
1905 | && test x$build = x$host; then | |
1906 | gcc_cv_ld=../ld/ld-new$build_exeext | |
1907 | elif test -x collect-ld$build_exeext; then | |
1908 | # Build using linker in the current directory. | |
1909 | gcc_cv_ld=./collect-ld$build_exeext | |
1910 | elif test -x $LD_FOR_TARGET; then | |
1911 | gcc_cv_ld="$LD_FOR_TARGET" | |
1912 | else | |
1913 | AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) | |
1914 | fi]) | |
1915 | ||
1916 | ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld | |
1917 | PLUGIN_LD=`basename $gcc_cv_ld` | |
1918 | AC_ARG_WITH(plugin-ld, | |
1919 | [ --with-plugin-ld=[[ARG]] specify the plugin linker], | |
1920 | [if test x"$withval" != x; then | |
1921 | ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" | |
1922 | PLUGIN_LD="$withval" | |
1923 | fi]) | |
1924 | AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) | |
1925 | AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker]) | |
1926 | ||
1927 | # Check to see if we are using gold instead of ld | |
1928 | AC_MSG_CHECKING(whether we are using gold) | |
1929 | ld_is_gold=no | |
1930 | if test x$gcc_cv_ld != x; then | |
1931 | if $gcc_cv_ld --version 2>/dev/null | sed 1q \ | |
1932 | | grep "GNU gold" > /dev/null; then | |
1933 | ld_is_gold=yes | |
1934 | fi | |
1935 | fi | |
1936 | AC_MSG_RESULT($ld_is_gold) | |
1937 | ||
1938 | ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld | |
1939 | AC_SUBST(ORIGINAL_LD_FOR_TARGET) | |
1940 | case "$ORIGINAL_LD_FOR_TARGET" in | |
1941 | ./collect-ld | ./collect-ld$build_exeext) ;; | |
1942 | *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; | |
1943 | esac | |
1944 | ||
1945 | AC_MSG_CHECKING(what linker to use) | |
1946 | if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then | |
1947 | # Single tree build which includes ld. We want to prefer it | |
1948 | # over whatever linker top-level may have detected, since | |
1949 | # we'll use what we're building after installation anyway. | |
1950 | AC_MSG_RESULT(newly built ld) | |
1951 | in_tree_ld=yes | |
1952 | in_tree_ld_is_elf=no | |
1953 | if (grep 'EMUL = .*elf' ../ld/Makefile \ | |
1954 | || grep 'EMUL = .*linux' ../ld/Makefile \ | |
1955 | || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then | |
1956 | in_tree_ld_is_elf=yes | |
1957 | fi | |
1958 | for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in | |
1959 | do | |
1960 | changequote(,)dnl | |
1961 | gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f` | |
1962 | if test x$gcc_cv_gld_version != x; then | |
1963 | break | |
1964 | fi | |
1965 | done | |
1966 | gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` | |
1967 | gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` | |
1968 | changequote([,])dnl | |
1969 | else | |
1970 | AC_MSG_RESULT($gcc_cv_ld) | |
1971 | in_tree_ld=no | |
1972 | fi | |
1973 | ||
1974 | # Figure out what nm we will be using. | |
1975 | gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils | |
1976 | AS_VAR_SET_IF(gcc_cv_nm,, [ | |
1977 | if test -f $gcc_cv_binutils_srcdir/configure.in \ | |
1978 | && test -f ../binutils/Makefile \ | |
1979 | && test x$build = x$host; then | |
1980 | gcc_cv_nm=../binutils/nm-new$build_exeext | |
1981 | elif test -x nm$build_exeext; then | |
1982 | gcc_cv_nm=./nm$build_exeext | |
1983 | elif test -x $NM_FOR_TARGET; then | |
1984 | gcc_cv_nm="$NM_FOR_TARGET" | |
1985 | else | |
1986 | AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) | |
1987 | fi]) | |
1988 | ||
1989 | AC_MSG_CHECKING(what nm to use) | |
1990 | if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then | |
1991 | # Single tree build which includes binutils. | |
1992 | AC_MSG_RESULT(newly built nm) | |
1993 | in_tree_nm=yes | |
1994 | else | |
1995 | AC_MSG_RESULT($gcc_cv_nm) | |
1996 | in_tree_nm=no | |
1997 | fi | |
1998 | ||
1999 | ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm | |
2000 | AC_SUBST(ORIGINAL_NM_FOR_TARGET) | |
2001 | case "$ORIGINAL_NM_FOR_TARGET" in | |
2002 | ./nm | ./nm$build_exeext) ;; | |
2003 | *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; | |
2004 | esac | |
2005 | ||
2006 | ||
2007 | # Figure out what objdump we will be using. | |
2008 | AS_VAR_SET_IF(gcc_cv_objdump,, [ | |
2009 | if test -f $gcc_cv_binutils_srcdir/configure.in \ | |
2010 | && test -f ../binutils/Makefile \ | |
2011 | && test x$build = x$host; then | |
2012 | # Single tree build which includes binutils. | |
2013 | gcc_cv_objdump=../binutils/objdump$build_exeext | |
2014 | elif test -x objdump$build_exeext; then | |
2015 | gcc_cv_objdump=./objdump$build_exeext | |
2016 | elif test -x $OBJDUMP_FOR_TARGET; then | |
2017 | gcc_cv_objdump="$OBJDUMP_FOR_TARGET" | |
2018 | else | |
2019 | AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) | |
2020 | fi]) | |
2021 | ||
2022 | AC_MSG_CHECKING(what objdump to use) | |
2023 | if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then | |
2024 | # Single tree build which includes binutils. | |
2025 | AC_MSG_RESULT(newly built objdump) | |
2026 | elif test x$gcc_cv_objdump = x; then | |
2027 | AC_MSG_RESULT(not found) | |
2028 | else | |
2029 | AC_MSG_RESULT($gcc_cv_objdump) | |
2030 | fi | |
2031 | ||
2032 | # Figure out what readelf we will be using. | |
2033 | AS_VAR_SET_IF(gcc_cv_readelf,, [ | |
2034 | if test -f $gcc_cv_binutils_srcdir/configure.in \ | |
2035 | && test -f ../binutils/Makefile \ | |
2036 | && test x$build = x$host; then | |
2037 | # Single tree build which includes binutils. | |
2038 | gcc_cv_readelf=../binutils/readelf$build_exeext | |
2039 | elif test -x readelf$build_exeext; then | |
2040 | gcc_cv_readelf=./readelf$build_exeext | |
2041 | else | |
2042 | AC_PATH_PROG(gcc_cv_readelf, readelf) | |
2043 | fi]) | |
2044 | ||
2045 | AC_MSG_CHECKING(what readelf to use) | |
2046 | if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then | |
2047 | # Single tree build which includes binutils. | |
2048 | AC_MSG_RESULT(newly built readelf) | |
2049 | elif test x$gcc_cv_readelf = x; then | |
2050 | AC_MSG_RESULT(not found) | |
2051 | else | |
2052 | AC_MSG_RESULT($gcc_cv_readelf) | |
2053 | fi | |
2054 | ||
2055 | # Figure out what assembler alignment features are present. | |
2056 | gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, | |
2057 | [2,6,0],, | |
2058 | [.balign 4 | |
2059 | .p2align 2],, | |
2060 | [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, | |
2061 | [Define if your assembler supports .balign and .p2align.])]) | |
2062 | ||
2063 | gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, | |
2064 | [2,8,0],, | |
2065 | [.p2align 4,,7],, | |
2066 | [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, | |
2067 | [Define if your assembler supports specifying the maximum number | |
2068 | of bytes to skip when using the GAS .p2align command.])]) | |
2069 | ||
2070 | gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, | |
2071 | [2,8,0],, | |
2072 | [.literal16],, | |
2073 | [AC_DEFINE(HAVE_GAS_LITERAL16, 1, | |
2074 | [Define if your assembler supports .literal16.])]) | |
2075 | ||
2076 | gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, | |
2077 | [elf,2,9,0],, | |
2078 | [conftest_label1: .word 0 | |
2079 | .subsection -1 | |
2080 | conftest_label2: .word 0 | |
2081 | .previous], | |
2082 | [if test x$gcc_cv_nm != x; then | |
2083 | $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 | |
2084 | $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 | |
2085 | if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 | |
2086 | then : | |
2087 | else gcc_cv_as_subsection_m1=yes | |
2088 | fi | |
2089 | rm -f conftest.nm1 conftest.nm2 | |
2090 | fi], | |
2091 | [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, | |
2092 | [Define if your assembler supports .subsection and .subsection -1 starts | |
2093 | emitting at the beginning of your section.])]) | |
2094 | ||
2095 | gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, | |
2096 | [2,2,0],, | |
2097 | [ .weak foobar],, | |
2098 | [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) | |
2099 | ||
2100 | gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, | |
2101 | [2,17,0],, | |
2102 | [ .weakref foobar, barfnot],, | |
2103 | [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) | |
2104 | ||
2105 | gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, | |
2106 | [2,15,91],, | |
2107 | [ .SPACE $TEXT$ | |
2108 | .NSUBSPA $CODE$,COMDAT],, | |
2109 | [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) | |
2110 | ||
2111 | # .hidden needs to be supported in both the assembler and the linker, | |
2112 | # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. | |
2113 | # This is irritatingly difficult to feature test for; we have to check the | |
2114 | # date string after the version number. If we've got an in-tree | |
2115 | # ld, we don't know its patchlevel version, so we set the baseline at 2.13 | |
2116 | # to be safe. | |
2117 | # The gcc_GAS_CHECK_FEATURE call just sets a cache variable. | |
2118 | gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, | |
2119 | [elf,2,13,0],, | |
2120 | [ .hidden foobar | |
2121 | foobar:],[ | |
2122 | # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with | |
2123 | # STV_HIDDEN, so disable .hidden support if so. | |
2124 | case "${target}" in | |
2125 | i?86-*-solaris2*) | |
2126 | if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then | |
2127 | cat > conftest.s <<EOF | |
2128 | .globl hidden | |
2129 | .hidden hidden | |
2130 | hidden: | |
2131 | .globl default | |
2132 | .set default,hidden | |
2133 | EOF | |
2134 | if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \ | |
2135 | && $gcc_cv_objdump -t conftest.o 2>/dev/null | \ | |
2136 | grep '\.hidden default' > /dev/null; then | |
2137 | gcc_cv_as_hidden=no | |
2138 | else | |
2139 | gcc_cv_as_hidden=yes | |
2140 | fi | |
2141 | else | |
2142 | # Assume bug is present if objdump is missing. | |
2143 | gcc_cv_as_hidden=no | |
2144 | fi | |
2145 | ;; | |
2146 | *) | |
2147 | gcc_cv_as_hidden=yes | |
2148 | ;; | |
2149 | esac]) | |
2150 | ||
2151 | # gnu_indirect_function type is an extension proposed at | |
2152 | # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime | |
2153 | # selection of function implementation | |
2154 | AC_ARG_ENABLE(gnu-indirect-function, | |
2155 | [AS_HELP_STRING([--enable-gnu-indirect-function], | |
2156 | [enable the use of the @gnu_indirect_function to glibc systems])], | |
2157 | [case $enable_gnu_indirect_function in | |
2158 | yes | no) ;; | |
2159 | *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. | |
2160 | Valid choices are 'yes' and 'no'.]) ;; | |
2161 | esac], | |
2162 | [enable_gnu_indirect_function="$default_gnu_indirect_function"]) | |
2163 | if test x$enable_gnu_indirect_function = xyes; then | |
2164 | AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1, | |
2165 | [Define if your system supports gnu indirect functions.]) | |
2166 | fi | |
2167 | ||
2168 | changequote(,)dnl | |
2169 | if test $in_tree_ld != yes ; then | |
2170 | ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` | |
2171 | if test x"$ld_is_gold" = xyes; then | |
2172 | gcc_cv_ld_hidden=yes | |
2173 | elif echo "$ld_ver" | grep GNU > /dev/null; then | |
2174 | ld_vers=`echo $ld_ver | sed -n \ | |
2175 | -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` | |
2176 | ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` | |
2177 | ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` | |
2178 | ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` | |
2179 | ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` | |
2180 | else | |
2181 | case "${target}" in | |
2182 | *-*-solaris2*) | |
2183 | # | |
2184 | # Solaris 2 ld -V output looks like this for a regular version: | |
2185 | # | |
2186 | # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 | |
2187 | # | |
2188 | # but test versions add stuff at the end: | |
2189 | # | |
2190 | # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 | |
2191 | # | |
2192 | ld_ver=`$gcc_cv_ld -V 2>&1` | |
2193 | if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then | |
2194 | ld_vers=`echo $ld_ver | sed -n \ | |
2195 | -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` | |
2196 | ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` | |
2197 | ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` | |
2198 | fi | |
2199 | ;; | |
2200 | esac | |
2201 | fi | |
2202 | fi | |
2203 | changequote([,])dnl | |
2204 | ||
2205 | AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, | |
2206 | [[if test $in_tree_ld = yes ; then | |
2207 | gcc_cv_ld_hidden=no | |
2208 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
2209 | && test $in_tree_ld_is_elf = yes; then | |
2210 | gcc_cv_ld_hidden=yes | |
2211 | fi | |
2212 | else | |
2213 | gcc_cv_ld_hidden=yes | |
2214 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
2215 | if test 0"$ld_date" -lt 20020404; then | |
2216 | if test -n "$ld_date"; then | |
2217 | # If there was date string, but was earlier than 2002-04-04, fail | |
2218 | gcc_cv_ld_hidden=no | |
2219 | elif test -z "$ld_vers"; then | |
2220 | # If there was no date string nor ld version number, something is wrong | |
2221 | gcc_cv_ld_hidden=no | |
2222 | else | |
2223 | test -z "$ld_vers_patch" && ld_vers_patch=0 | |
2224 | if test "$ld_vers_major" -lt 2; then | |
2225 | gcc_cv_ld_hidden=no | |
2226 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then | |
2227 | gcc_cv_ld_hidden="no" | |
2228 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then | |
2229 | gcc_cv_ld_hidden=no | |
2230 | fi | |
2231 | fi | |
2232 | fi | |
2233 | else | |
2234 | case "${target}" in | |
2235 | hppa64*-*-hpux* | ia64*-*-hpux*) | |
2236 | gcc_cv_ld_hidden=yes | |
2237 | ;; | |
2238 | *-*-solaris2.8*) | |
2239 | # .hidden support was backported to Solaris 8, starting with ld | |
2240 | # version 1.276. | |
2241 | if test "$ld_vers_minor" -ge 276; then | |
2242 | gcc_cv_ld_hidden=yes | |
2243 | else | |
2244 | gcc_cv_ld_hidden=no | |
2245 | fi | |
2246 | ;; | |
2247 | *-*-solaris2.9* | *-*-solaris2.1[0-9]*) | |
2248 | # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but | |
2249 | # .symbolic was only added in Solaris 9 12/02. | |
2250 | gcc_cv_ld_hidden=yes | |
2251 | ;; | |
2252 | *) | |
2253 | gcc_cv_ld_hidden=no | |
2254 | ;; | |
2255 | esac | |
2256 | fi | |
2257 | fi]]) | |
2258 | libgcc_visibility=no | |
2259 | AC_SUBST(libgcc_visibility) | |
2260 | GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) | |
2261 | if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then | |
2262 | libgcc_visibility=yes | |
2263 | AC_DEFINE(HAVE_GAS_HIDDEN, 1, | |
2264 | [Define if your assembler and linker support .hidden.]) | |
2265 | fi | |
2266 | ||
2267 | AC_MSG_CHECKING(linker read-only and read-write section mixing) | |
2268 | gcc_cv_ld_ro_rw_mix=unknown | |
2269 | if test $in_tree_ld = yes ; then | |
2270 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
2271 | && test $in_tree_ld_is_elf = yes; then | |
2272 | gcc_cv_ld_ro_rw_mix=read-write | |
2273 | fi | |
2274 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then | |
2275 | echo '.section myfoosect, "a"' > conftest1.s | |
2276 | echo '.section myfoosect, "aw"' > conftest2.s | |
2277 | echo '.byte 1' >> conftest2.s | |
2278 | echo '.section myfoosect, "a"' > conftest3.s | |
2279 | echo '.byte 0' >> conftest3.s | |
2280 | if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ | |
2281 | && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ | |
2282 | && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ | |
2283 | && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ | |
2284 | conftest2.o conftest3.o > /dev/null 2>&1; then | |
2285 | gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ | |
2286 | | sed -e '/myfoosect/!d' -e N` | |
2287 | if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then | |
2288 | if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then | |
2289 | gcc_cv_ld_ro_rw_mix=read-only | |
2290 | else | |
2291 | gcc_cv_ld_ro_rw_mix=read-write | |
2292 | fi | |
2293 | fi | |
2294 | fi | |
2295 | changequote(,)dnl | |
2296 | rm -f conftest.* conftest[123].* | |
2297 | changequote([,])dnl | |
2298 | fi | |
2299 | if test x$gcc_cv_ld_ro_rw_mix = xread-write; then | |
2300 | AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, | |
2301 | [Define if your linker links a mix of read-only | |
2302 | and read-write sections into a read-write section.]) | |
2303 | fi | |
2304 | AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) | |
2305 | ||
2306 | # Check if we have .[us]leb128, and support symbol arithmetic with it. | |
2307 | gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, | |
2308 | [elf,2,11,0],, | |
2309 | [ .data | |
2310 | .uleb128 L2 - L1 | |
2311 | L1: | |
2312 | .uleb128 1280 | |
2313 | .sleb128 -1010 | |
2314 | L2:], | |
2315 | [[# GAS versions before 2.11 do not support uleb128, | |
2316 | # despite appearing to. | |
2317 | # ??? There exists an elf-specific test that will crash | |
2318 | # the assembler. Perhaps it's better to figure out whether | |
2319 | # arbitrary sections are supported and try the test. | |
2320 | as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` | |
2321 | if echo "$as_ver" | grep GNU > /dev/null; then | |
2322 | as_vers=`echo $as_ver | sed -n \ | |
2323 | -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` | |
2324 | as_major=`expr "$as_vers" : '\([0-9]*\)'` | |
2325 | as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` | |
2326 | if test $as_major -eq 2 && test $as_minor -lt 11 | |
2327 | then : | |
2328 | else gcc_cv_as_leb128=yes | |
2329 | fi | |
2330 | fi]], | |
2331 | [AC_DEFINE(HAVE_AS_LEB128, 1, | |
2332 | [Define if your assembler supports .sleb128 and .uleb128.])]) | |
2333 | ||
2334 | # Check if we have assembler support for unwind directives. | |
2335 | gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, | |
2336 | ,, | |
2337 | [ .text | |
2338 | .cfi_startproc | |
2339 | .cfi_offset 0, 0 | |
2340 | .cfi_same_value 1 | |
2341 | .cfi_def_cfa 1, 2 | |
2342 | .cfi_escape 1, 2, 3, 4, 5 | |
2343 | .cfi_endproc], | |
2344 | [case "$target" in | |
2345 | *-*-solaris*) | |
2346 | # If the linker used on Solaris (like Sun ld) isn't capable of merging | |
2347 | # read-only and read-write sections, we need to make sure that the | |
2348 | # assembler used emits read-write .eh_frame sections. | |
2349 | if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then | |
2350 | if test "x$gcc_cv_objdump" != x; then | |
2351 | if $gcc_cv_objdump -h conftest.o 2>/dev/null | \ | |
2352 | sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then | |
2353 | gcc_cv_as_cfi_directive=no | |
2354 | else | |
2355 | case "$target" in | |
2356 | i?86-*-solaris2.1[[0-9]]*) | |
2357 | # On Solaris/x86, make sure that GCC and gas agree on using | |
2358 | # read-only .eh_frame sections for 64-bit. | |
2359 | if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \ | |
2360 | $gcc_cv_objdump -h conftest.o 2>/dev/null | \ | |
2361 | sed -e /.eh_frame/!d -e N | \ | |
2362 | grep READONLY > /dev/null; then | |
2363 | gcc_cv_as_cfi_directive=yes | |
2364 | else | |
2365 | gcc_cv_as_cfi_directive=no | |
2366 | fi | |
2367 | ;; | |
2368 | *) | |
2369 | gcc_cv_as_cfi_directive=yes | |
2370 | ;; | |
2371 | esac | |
2372 | fi | |
2373 | else | |
2374 | # no objdump, err on the side of caution | |
2375 | gcc_cv_as_cfi_directive=no | |
2376 | fi | |
2377 | else | |
2378 | gcc_cv_as_cfi_directive=yes | |
2379 | fi | |
2380 | ;; | |
2381 | *-*-*) | |
2382 | gcc_cv_as_cfi_directive=yes | |
2383 | ;; | |
2384 | esac]) | |
2385 | if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then | |
2386 | gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, | |
2387 | ,, | |
2388 | [ .text | |
2389 | .cfi_startproc | |
2390 | .cfi_adjust_cfa_offset 64 | |
2391 | .skip 75040, 0 | |
2392 | .cfi_adjust_cfa_offset 128 | |
2393 | .cfi_endproc], | |
2394 | [[ | |
2395 | if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ | |
2396 | | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then | |
2397 | gcc_cv_as_cfi_advance_working=yes | |
2398 | fi | |
2399 | ]]) | |
2400 | else | |
2401 | # no objdump, err on the side of caution | |
2402 | gcc_cv_as_cfi_advance_working=no | |
2403 | fi | |
2404 | GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) | |
2405 | AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, | |
2406 | [`if test $gcc_cv_as_cfi_directive = yes \ | |
2407 | && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], | |
2408 | [Define 0/1 if your assembler supports CFI directives.]) | |
2409 | ||
2410 | GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) | |
2411 | gcc_GAS_CHECK_FEATURE([cfi personality directive], | |
2412 | gcc_cv_as_cfi_personality_directive, ,, | |
2413 | [ .text | |
2414 | .cfi_startproc | |
2415 | .cfi_personality 0, symbol | |
2416 | .cfi_endproc]) | |
2417 | AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, | |
2418 | [`if test $gcc_cv_as_cfi_personality_directive = yes; | |
2419 | then echo 1; else echo 0; fi`], | |
2420 | [Define 0/1 if your assembler supports .cfi_personality.]) | |
2421 | ||
2422 | gcc_GAS_CHECK_FEATURE([cfi sections directive], | |
2423 | gcc_cv_as_cfi_sections_directive, ,, | |
2424 | [ .text | |
2425 | .cfi_sections .debug_frame, .eh_frame | |
2426 | .cfi_startproc | |
2427 | .cfi_endproc], | |
2428 | [case $target_os in | |
2429 | win32 | pe | cygwin* | mingw32* | uwin*) | |
2430 | # Need to check that we generated the correct relocation for the | |
2431 | # .debug_frame section. This was fixed for binutils 2.21. | |
2432 | gcc_cv_as_cfi_sections_directive=no | |
2433 | if test "x$gcc_cv_objdump" != x; then | |
2434 | if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ | |
2435 | grep secrel > /dev/null; then | |
2436 | gcc_cv_as_cfi_sections_directive=yes | |
2437 | fi | |
2438 | fi | |
2439 | ;; | |
2440 | *) | |
2441 | gcc_cv_as_cfi_sections_directive=yes | |
2442 | ;; | |
2443 | esac]) | |
2444 | GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) | |
2445 | AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, | |
2446 | [`if test $gcc_cv_as_cfi_sections_directive = yes; | |
2447 | then echo 1; else echo 0; fi`], | |
2448 | [Define 0/1 if your assembler supports .cfi_sections.]) | |
2449 | ||
2450 | # GAS versions up to and including 2.11.0 may mis-optimize | |
2451 | # .eh_frame data. | |
2452 | gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, | |
2453 | [elf,2,12,0],, | |
2454 | [ .text | |
2455 | .LFB1: | |
2456 | .4byte 0 | |
2457 | .L1: | |
2458 | .4byte 0 | |
2459 | .LFE1: | |
2460 | .section .eh_frame,"aw",@progbits | |
2461 | __FRAME_BEGIN__: | |
2462 | .4byte .LECIE1-.LSCIE1 | |
2463 | .LSCIE1: | |
2464 | .4byte 0x0 | |
2465 | .byte 0x1 | |
2466 | .ascii "z\0" | |
2467 | .byte 0x1 | |
2468 | .byte 0x78 | |
2469 | .byte 0x1a | |
2470 | .byte 0x0 | |
2471 | .byte 0x4 | |
2472 | .4byte 1 | |
2473 | .p2align 1 | |
2474 | .LECIE1: | |
2475 | .LSFDE1: | |
2476 | .4byte .LEFDE1-.LASFDE1 | |
2477 | .LASFDE1: | |
2478 | .4byte .LASFDE1-__FRAME_BEGIN__ | |
2479 | .4byte .LFB1 | |
2480 | .4byte .LFE1-.LFB1 | |
2481 | .byte 0x4 | |
2482 | .4byte .LFE1-.LFB1 | |
2483 | .byte 0x4 | |
2484 | .4byte .L1-.LFB1 | |
2485 | .LEFDE1:], | |
2486 | [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. | |
2487 | cat > conftest.lit <<EOF | |
2488 | 0000 10000000 00000000 017a0001 781a0004 .........z..x... | |
2489 | 0010 01000000 12000000 18000000 00000000 ................ | |
2490 | 0020 08000000 04080000 0044 .........D @&t@ | |
2491 | EOF | |
2492 | cat > conftest.big <<EOF | |
2493 | 0000 00000010 00000000 017a0001 781a0004 .........z..x... | |
2494 | 0010 00000001 00000012 00000018 00000000 ................ | |
2495 | 0020 00000008 04000000 0844 .........D @&t@ | |
2496 | EOF | |
2497 | # If the assembler didn't choke, and we can objdump, | |
2498 | # and we got the correct data, then succeed. | |
2499 | # The text in the here-document typically retains its unix-style line | |
2500 | # endings, while the output of objdump will use host line endings. | |
2501 | # Therefore, use diff -b for the comparisons. | |
2502 | if test x$gcc_cv_objdump != x \ | |
2503 | && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ | |
2504 | | tail -3 > conftest.got \ | |
2505 | && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ | |
2506 | || diff -b conftest.big conftest.got > /dev/null 2>&1; } | |
2507 | then | |
2508 | gcc_cv_as_eh_frame=yes | |
2509 | elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then | |
2510 | gcc_cv_as_eh_frame=buggy | |
2511 | else | |
2512 | # Uh oh, what do we do now? | |
2513 | gcc_cv_as_eh_frame=no | |
2514 | fi]) | |
2515 | ||
2516 | if test $gcc_cv_as_eh_frame = buggy; then | |
2517 | AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, | |
2518 | [Define if your assembler mis-optimizes .eh_frame data.]) | |
2519 | fi | |
2520 | ||
2521 | gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, | |
2522 | [elf,2,12,0], [--fatal-warnings], | |
2523 | [.section .rodata.str, "aMS", @progbits, 1]) | |
2524 | if test $gcc_cv_as_shf_merge = no; then | |
2525 | gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, | |
2526 | [elf,2,12,0], [--fatal-warnings], | |
2527 | [.section .rodata.str, "aMS", %progbits, 1]) | |
2528 | fi | |
2529 | AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, | |
2530 | [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], | |
2531 | [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) | |
2532 | ||
2533 | gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group, | |
2534 | [elf,2,16,0], [--fatal-warnings], | |
2535 | [.section .text,"axG",@progbits,.foo,comdat]) | |
2536 | if test $gcc_cv_as_comdat_group = yes; then | |
2537 | gcc_cv_as_comdat_group_percent=no | |
2538 | else | |
2539 | gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent, | |
2540 | [elf,2,16,0], [--fatal-warnings], | |
2541 | [.section .text,"axG",%progbits,.foo,comdat]) | |
2542 | fi | |
2543 | if test x"$ld_is_gold" = xyes; then | |
2544 | comdat_group=yes | |
2545 | elif test $in_tree_ld = yes ; then | |
2546 | comdat_group=no | |
2547 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
2548 | && test $in_tree_ld_is_elf = yes; then | |
2549 | comdat_group=yes | |
2550 | fi | |
2551 | elif echo "$ld_ver" | grep GNU > /dev/null; then | |
2552 | comdat_group=yes | |
2553 | if test 0"$ld_date" -lt 20050308; then | |
2554 | if test -n "$ld_date"; then | |
2555 | # If there was date string, but was earlier than 2005-03-08, fail | |
2556 | comdat_group=no | |
2557 | elif test "$ld_vers_major" -lt 2; then | |
2558 | comdat_group=no | |
2559 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then | |
2560 | comdat_group=no | |
2561 | fi | |
2562 | fi | |
2563 | else | |
2564 | changequote(,)dnl | |
2565 | case "${target}" in | |
2566 | *-*-solaris2.1[1-9]*) | |
2567 | # Sun ld has COMDAT group support since Solaris 9, but it doesn't | |
2568 | # interoperate with GNU as until Solaris 11 build 130, i.e. ld | |
2569 | # version 1.688. | |
2570 | # | |
2571 | # FIXME: Maybe need to refine later when COMDAT group support with | |
2572 | # Sun as is implemented. | |
2573 | if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then | |
2574 | comdat_group=yes | |
2575 | else | |
2576 | comdat_group=no | |
2577 | fi | |
2578 | ;; | |
2579 | *) | |
2580 | # Assume linkers other than GNU ld don't support COMDAT group. | |
2581 | comdat_group=no | |
2582 | ;; | |
2583 | esac | |
2584 | changequote([,])dnl | |
2585 | fi | |
2586 | # Allow overriding the automatic COMDAT group tests above. | |
2587 | AC_ARG_ENABLE(comdat, | |
2588 | [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], | |
2589 | [comdat_group="$enable_comdat"]) | |
2590 | if test $comdat_group = no; then | |
2591 | gcc_cv_as_comdat_group=no | |
2592 | gcc_cv_as_comdat_group_percent=no | |
2593 | fi | |
2594 | AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, | |
2595 | [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`], | |
2596 | [Define 0/1 if your assembler and linker support COMDAT groups.]) | |
2597 | ||
2598 | gcc_GAS_CHECK_FEATURE([line table discriminator support], | |
2599 | gcc_cv_as_discriminator, | |
2600 | [2,19,51],, | |
2601 | [ .text | |
2602 | .file 1 "conf.c" | |
2603 | .loc 1 1 0 discriminator 1],, | |
2604 | [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, | |
2605 | [Define if your assembler supports the .loc discriminator sub-directive.])]) | |
2606 | ||
2607 | # Thread-local storage - the check is heavily parameterized. | |
2608 | conftest_s= | |
2609 | tls_first_major= | |
2610 | tls_first_minor= | |
2611 | tls_as_opt= | |
2612 | case "$target" in | |
2613 | changequote(,)dnl | |
2614 | alpha*-*-*) | |
2615 | conftest_s=' | |
2616 | .section ".tdata","awT",@progbits | |
2617 | foo: .long 25 | |
2618 | .text | |
2619 | ldq $27,__tls_get_addr($29) !literal!1 | |
2620 | lda $16,foo($29) !tlsgd!1 | |
2621 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
2622 | ldq $27,__tls_get_addr($29) !literal!2 | |
2623 | lda $16,foo($29) !tlsldm!2 | |
2624 | jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 | |
2625 | ldq $1,foo($29) !gotdtprel | |
2626 | ldah $2,foo($29) !dtprelhi | |
2627 | lda $3,foo($2) !dtprello | |
2628 | lda $4,foo($29) !dtprel | |
2629 | ldq $1,foo($29) !gottprel | |
2630 | ldah $2,foo($29) !tprelhi | |
2631 | lda $3,foo($2) !tprello | |
2632 | lda $4,foo($29) !tprel' | |
2633 | tls_first_major=2 | |
2634 | tls_first_minor=13 | |
2635 | tls_as_opt=--fatal-warnings | |
2636 | ;; | |
2637 | cris-*-*|crisv32-*-*) | |
2638 | conftest_s=' | |
2639 | .section ".tdata","awT",@progbits | |
2640 | x: .long 25 | |
2641 | .text | |
2642 | move.d x:IE,$r10 | |
2643 | nop' | |
2644 | tls_first_major=2 | |
2645 | tls_first_minor=20 | |
2646 | tls_as_opt=--fatal-warnings | |
2647 | ;; | |
2648 | frv*-*-*) | |
2649 | conftest_s=' | |
2650 | .section ".tdata","awT",@progbits | |
2651 | x: .long 25 | |
2652 | .text | |
2653 | call #gettlsoff(x)' | |
2654 | tls_first_major=2 | |
2655 | tls_first_minor=14 | |
2656 | ;; | |
2657 | hppa*-*-linux*) | |
2658 | conftest_s=' | |
2659 | t1: .reg %r20 | |
2660 | t2: .reg %r21 | |
2661 | gp: .reg %r19 | |
2662 | .section ".tdata","awT",@progbits | |
2663 | foo: .long 25 | |
2664 | .text | |
2665 | .align 4 | |
2666 | addil LT%foo-$tls_gdidx$,gp | |
2667 | ldo RT%foo-$tls_gdidx$(%r1),%arg0 | |
2668 | b __tls_get_addr | |
2669 | nop | |
2670 | addil LT%foo-$tls_ldidx$,gp | |
2671 | b __tls_get_addr | |
2672 | ldo RT%foo-$tls_ldidx$(%r1),%arg0 | |
2673 | addil LR%foo-$tls_dtpoff$,%ret0 | |
2674 | ldo RR%foo-$tls_dtpoff$(%r1),%t1 | |
2675 | mfctl %cr27,%t1 | |
2676 | addil LT%foo-$tls_ieoff$,gp | |
2677 | ldw RT%foo-$tls_ieoff$(%r1),%t2 | |
2678 | add %t1,%t2,%t3 | |
2679 | mfctl %cr27,%t1 | |
2680 | addil LR%foo-$tls_leoff$,%t1 | |
2681 | ldo RR%foo-$tls_leoff$(%r1),%t2' | |
2682 | tls_first_major=2 | |
2683 | tls_first_minor=15 | |
2684 | tls_as_opt=--fatal-warnings | |
2685 | ;; | |
2686 | arm*-*-*) | |
2687 | conftest_s=' | |
2688 | .section ".tdata","awT",%progbits | |
2689 | foo: .long 25 | |
2690 | .text | |
2691 | .word foo(gottpoff) | |
2692 | .word foo(tpoff) | |
2693 | .word foo(tlsgd) | |
2694 | .word foo(tlsldm) | |
2695 | .word foo(tlsldo)' | |
2696 | tls_first_major=2 | |
2697 | tls_first_minor=17 | |
2698 | ;; | |
2699 | i[34567]86-*-*) | |
2700 | case "$target" in | |
2701 | i[34567]86-*-solaris2.*) | |
2702 | on_solaris=yes | |
2703 | tga_func=___tls_get_addr | |
2704 | ;; | |
2705 | *) | |
2706 | on_solaris=no | |
2707 | ;; | |
2708 | esac | |
2709 | if test x$on_solaris = xyes && test x$gas_flag = xno; then | |
2710 | conftest_s=' | |
2711 | .section .tdata,"awt",@progbits' | |
2712 | tls_first_major=0 | |
2713 | tls_first_minor=0 | |
2714 | changequote([,])dnl | |
2715 | AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', | |
2716 | [Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) | |
2717 | changequote(,)dnl | |
2718 | else | |
2719 | conftest_s=' | |
2720 | .section ".tdata","awT",@progbits' | |
2721 | tls_first_major=2 | |
2722 | tls_first_minor=14 | |
2723 | tls_as_opt="--fatal-warnings" | |
2724 | fi | |
2725 | conftest_s="$conftest_s | |
2726 | foo: .long 25 | |
2727 | .text | |
2728 | movl %gs:0, %eax | |
2729 | leal foo@tlsgd(,%ebx,1), %eax | |
2730 | leal foo@tlsldm(%ebx), %eax | |
2731 | leal foo@dtpoff(%eax), %edx | |
2732 | movl foo@gottpoff(%ebx), %eax | |
2733 | subl foo@gottpoff(%ebx), %eax | |
2734 | addl foo@gotntpoff(%ebx), %eax | |
2735 | movl foo@indntpoff, %eax | |
2736 | movl \$foo@tpoff, %eax | |
2737 | subl \$foo@tpoff, %eax | |
2738 | leal foo@ntpoff(%ecx), %eax" | |
2739 | ;; | |
2740 | x86_64-*-*) | |
2741 | conftest_s=' | |
2742 | .section ".tdata","awT",@progbits | |
2743 | foo: .long 25 | |
2744 | .text | |
2745 | movq %fs:0, %rax | |
2746 | leaq foo@TLSGD(%rip), %rdi | |
2747 | leaq foo@TLSLD(%rip), %rdi | |
2748 | leaq foo@DTPOFF(%rax), %rdx | |
2749 | movq foo@GOTTPOFF(%rip), %rax | |
2750 | movq $foo@TPOFF, %rax' | |
2751 | tls_first_major=2 | |
2752 | tls_first_minor=14 | |
2753 | tls_as_opt=--fatal-warnings | |
2754 | ;; | |
2755 | ia64-*-*) | |
2756 | conftest_s=' | |
2757 | .section ".tdata","awT",@progbits | |
2758 | foo: data8 25 | |
2759 | .text | |
2760 | addl r16 = @ltoff(@dtpmod(foo#)), gp | |
2761 | addl r17 = @ltoff(@dtprel(foo#)), gp | |
2762 | addl r18 = @ltoff(@tprel(foo#)), gp | |
2763 | addl r19 = @dtprel(foo#), gp | |
2764 | adds r21 = @dtprel(foo#), r13 | |
2765 | movl r23 = @dtprel(foo#) | |
2766 | addl r20 = @tprel(foo#), gp | |
2767 | adds r22 = @tprel(foo#), r13 | |
2768 | movl r24 = @tprel(foo#)' | |
2769 | tls_first_major=2 | |
2770 | tls_first_minor=13 | |
2771 | tls_as_opt=--fatal-warnings | |
2772 | ;; | |
2773 | mips*-*-*) | |
2774 | conftest_s=' | |
2775 | .section .tdata,"awT",@progbits | |
2776 | x: | |
2777 | .word 2 | |
2778 | .text | |
2779 | addiu $4, $28, %tlsgd(x) | |
2780 | addiu $4, $28, %tlsldm(x) | |
2781 | lui $4, %dtprel_hi(x) | |
2782 | addiu $4, $4, %dtprel_lo(x) | |
2783 | lw $4, %gottprel(x)($28) | |
2784 | lui $4, %tprel_hi(x) | |
2785 | addiu $4, $4, %tprel_lo(x)' | |
2786 | tls_first_major=2 | |
2787 | tls_first_minor=16 | |
2788 | tls_as_opt='-32 --fatal-warnings' | |
2789 | ;; | |
2790 | m68k-*-*) | |
2791 | conftest_s=' | |
2792 | .section .tdata,"awT",@progbits | |
2793 | x: | |
2794 | .word 2 | |
2795 | .text | |
2796 | foo: | |
2797 | move.l x@TLSGD(%a5),%a0 | |
2798 | move.l x@TLSLDM(%a5),%a0 | |
2799 | move.l x@TLSLDO(%a5),%a0 | |
2800 | move.l x@TLSIE(%a5),%a0 | |
2801 | move.l x@TLSLE(%a5),%a0' | |
2802 | tls_first_major=2 | |
2803 | tls_first_minor=19 | |
2804 | tls_as_opt='--fatal-warnings' | |
2805 | ;; | |
2806 | powerpc-*-*) | |
2807 | conftest_s=' | |
2808 | .section ".tdata","awT",@progbits | |
2809 | .align 2 | |
2810 | ld0: .space 4 | |
2811 | ld1: .space 4 | |
2812 | x1: .space 4 | |
2813 | x2: .space 4 | |
2814 | x3: .space 4 | |
2815 | .text | |
2816 | addi 3,31,ld0@got@tlsgd | |
2817 | bl __tls_get_addr | |
2818 | addi 3,31,x1@got@tlsld | |
2819 | bl __tls_get_addr | |
2820 | addi 9,3,x1@dtprel | |
2821 | addis 9,3,x2@dtprel@ha | |
2822 | addi 9,9,x2@dtprel@l | |
2823 | lwz 9,x3@got@tprel(31) | |
2824 | add 9,9,x@tls | |
2825 | addi 9,2,x1@tprel | |
2826 | addis 9,2,x2@tprel@ha | |
2827 | addi 9,9,x2@tprel@l' | |
2828 | tls_first_major=2 | |
2829 | tls_first_minor=14 | |
2830 | tls_as_opt="-a32 --fatal-warnings" | |
2831 | ;; | |
2832 | powerpc64-*-*) | |
2833 | conftest_s=' | |
2834 | .section ".tdata","awT",@progbits | |
2835 | .align 3 | |
2836 | ld0: .space 8 | |
2837 | ld1: .space 8 | |
2838 | x1: .space 8 | |
2839 | x2: .space 8 | |
2840 | x3: .space 8 | |
2841 | .text | |
2842 | addi 3,2,ld0@got@tlsgd | |
2843 | bl .__tls_get_addr | |
2844 | nop | |
2845 | addi 3,2,ld1@toc | |
2846 | bl .__tls_get_addr | |
2847 | nop | |
2848 | addi 3,2,x1@got@tlsld | |
2849 | bl .__tls_get_addr | |
2850 | nop | |
2851 | addi 9,3,x1@dtprel | |
2852 | bl .__tls_get_addr | |
2853 | nop | |
2854 | addis 9,3,x2@dtprel@ha | |
2855 | addi 9,9,x2@dtprel@l | |
2856 | bl .__tls_get_addr | |
2857 | nop | |
2858 | ld 9,x3@got@dtprel(2) | |
2859 | add 9,9,3 | |
2860 | bl .__tls_get_addr | |
2861 | nop' | |
2862 | tls_first_major=2 | |
2863 | tls_first_minor=14 | |
2864 | tls_as_opt="-a64 --fatal-warnings" | |
2865 | ;; | |
2866 | s390-*-*) | |
2867 | conftest_s=' | |
2868 | .section ".tdata","awT",@progbits | |
2869 | foo: .long 25 | |
2870 | .text | |
2871 | .long foo@TLSGD | |
2872 | .long foo@TLSLDM | |
2873 | .long foo@DTPOFF | |
2874 | .long foo@NTPOFF | |
2875 | .long foo@GOTNTPOFF | |
2876 | .long foo@INDNTPOFF | |
2877 | l %r1,foo@GOTNTPOFF(%r12) | |
2878 | l %r1,0(%r1):tls_load:foo | |
2879 | bas %r14,0(%r1,%r13):tls_gdcall:foo | |
2880 | bas %r14,0(%r1,%r13):tls_ldcall:foo' | |
2881 | tls_first_major=2 | |
2882 | tls_first_minor=14 | |
2883 | tls_as_opt="-m31 --fatal-warnings" | |
2884 | ;; | |
2885 | s390x-*-*) | |
2886 | conftest_s=' | |
2887 | .section ".tdata","awT",@progbits | |
2888 | foo: .long 25 | |
2889 | .text | |
2890 | .quad foo@TLSGD | |
2891 | .quad foo@TLSLDM | |
2892 | .quad foo@DTPOFF | |
2893 | .quad foo@NTPOFF | |
2894 | .quad foo@GOTNTPOFF | |
2895 | lg %r1,foo@GOTNTPOFF(%r12) | |
2896 | larl %r1,foo@INDNTPOFF | |
2897 | brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo | |
2898 | brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' | |
2899 | tls_first_major=2 | |
2900 | tls_first_minor=14 | |
2901 | tls_as_opt="-m64 -Aesame --fatal-warnings" | |
2902 | ;; | |
2903 | sh-*-* | sh[34]-*-*) | |
2904 | conftest_s=' | |
2905 | .section ".tdata","awT",@progbits | |
2906 | foo: .long 25 | |
2907 | .text | |
2908 | .long foo@TLSGD | |
2909 | .long foo@TLSLDM | |
2910 | .long foo@DTPOFF | |
2911 | .long foo@GOTTPOFF | |
2912 | .long foo@TPOFF' | |
2913 | tls_first_major=2 | |
2914 | tls_first_minor=13 | |
2915 | tls_as_opt=--fatal-warnings | |
2916 | ;; | |
2917 | sparc*-*-*) | |
2918 | case "$target" in | |
2919 | sparc*-sun-solaris2.*) | |
2920 | on_solaris=yes | |
2921 | tga_func=__tls_get_addr | |
2922 | ;; | |
2923 | *) | |
2924 | on_solaris=no | |
2925 | ;; | |
2926 | esac | |
2927 | if test x$on_solaris = xyes && test x$gas_flag = xno; then | |
2928 | conftest_s=' | |
2929 | .section ".tdata",#alloc,#write,#tls' | |
2930 | tls_first_major=0 | |
2931 | tls_first_minor=0 | |
2932 | else | |
2933 | conftest_s=' | |
2934 | .section ".tdata","awT",@progbits' | |
2935 | tls_first_major=2 | |
2936 | tls_first_minor=14 | |
2937 | tls_as_opt="-32 --fatal-warnings" | |
2938 | fi | |
2939 | conftest_s="$conftest_s | |
2940 | foo: .long 25 | |
2941 | .text | |
2942 | sethi %tgd_hi22(foo), %o0 | |
2943 | add %o0, %tgd_lo10(foo), %o1 | |
2944 | add %l7, %o1, %o0, %tgd_add(foo) | |
2945 | call __tls_get_addr, %tgd_call(foo) | |
2946 | sethi %tldm_hi22(foo), %l1 | |
2947 | add %l1, %tldm_lo10(foo), %l2 | |
2948 | add %l7, %l2, %o0, %tldm_add(foo) | |
2949 | call __tls_get_addr, %tldm_call(foo) | |
2950 | sethi %tldo_hix22(foo), %l3 | |
2951 | xor %l3, %tldo_lox10(foo), %l4 | |
2952 | add %o0, %l4, %l5, %tldo_add(foo) | |
2953 | sethi %tie_hi22(foo), %o3 | |
2954 | add %o3, %tie_lo10(foo), %o3 | |
2955 | ld [%l7 + %o3], %o2, %tie_ld(foo) | |
2956 | add %g7, %o2, %o4, %tie_add(foo) | |
2957 | sethi %tle_hix22(foo), %l1 | |
2958 | xor %l1, %tle_lox10(foo), %o5 | |
2959 | ld [%g7 + %o5], %o1" | |
2960 | ;; | |
2961 | xtensa*-*-*) | |
2962 | conftest_s=' | |
2963 | .section ".tdata","awT",@progbits | |
2964 | foo: .long 25 | |
2965 | .text | |
2966 | movi a8, foo@TLSFUNC | |
2967 | movi a10, foo@TLSARG | |
2968 | callx8.tls a8, foo@TLSCALL' | |
2969 | tls_first_major=2 | |
2970 | tls_first_minor=19 | |
2971 | ;; | |
2972 | changequote([,])dnl | |
2973 | esac | |
2974 | set_have_as_tls=no | |
2975 | if test "x$enable_tls" = xno ; then | |
2976 | : # TLS explicitly disabled. | |
2977 | elif test "x$enable_tls" = xyes ; then | |
2978 | set_have_as_tls=yes # TLS explicitly enabled. | |
2979 | elif test -z "$tls_first_major"; then | |
2980 | : # If we don't have a check, assume no support. | |
2981 | else | |
2982 | gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, | |
2983 | [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, | |
2984 | [set_have_as_tls=yes]) | |
2985 | fi | |
2986 | case "$target" in | |
2987 | *-*-irix6*) | |
2988 | # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld | |
2989 | # with TLS support are in use, native TLS cannot work. | |
2990 | set_have_as_tls=no | |
2991 | ;; | |
2992 | *-*-osf*) | |
2993 | # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and | |
2994 | # gld with TLS support are in use, native TLS cannot work. | |
2995 | set_have_as_tls=no | |
2996 | ;; | |
2997 | # TLS was introduced in the Solaris 9 FCS release and backported to | |
2998 | # Solaris 8 patches. Support for GNU-style TLS on x86 was only | |
2999 | # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun | |
3000 | # ld and GCC don't support any longer. | |
3001 | *-*-solaris2.*) | |
3002 | AC_MSG_CHECKING(linker and ld.so.1 TLS support) | |
3003 | ld_tls_support=no | |
3004 | # Check ld and ld.so.1 TLS support. | |
3005 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
3006 | # Assume all interesting versions of GNU ld have TLS support. | |
3007 | # FIXME: still need ld.so.1 support, i.e. ld version checks below. | |
3008 | ld_tls_support=yes | |
3009 | else | |
3010 | case "$target" in | |
3011 | # Solaris 8/x86 ld has GNU style TLS support since version 1.280. | |
3012 | i?86-*-solaris2.8) | |
3013 | min_tls_ld_vers_minor=280 | |
3014 | ;; | |
3015 | # Solaris 8/SPARC ld has TLS support since version 1.272. | |
3016 | sparc*-*-solaris2.8) | |
3017 | min_tls_ld_vers_minor=272 | |
3018 | ;; | |
3019 | # Solaris 9/x86 ld has GNU style TLS support since version 1.374. | |
3020 | i?86-*-solaris2.9) | |
3021 | min_tls_ld_vers_minor=374 | |
3022 | ;; | |
3023 | # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS. | |
3024 | sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*) | |
3025 | min_tls_ld_vers_minor=343 | |
3026 | ;; | |
3027 | esac | |
3028 | if test "$ld_vers_major" -gt 1 || \ | |
3029 | test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then | |
3030 | ld_tls_support=yes | |
3031 | else | |
3032 | set_have_as_tls=no | |
3033 | fi | |
3034 | fi | |
3035 | AC_MSG_RESULT($ld_tls_support) | |
3036 | ||
3037 | save_LIBS="$LIBS" | |
3038 | save_LDFLAGS="$LDFLAGS" | |
3039 | LIBS= | |
3040 | LDFLAGS= | |
3041 | ||
3042 | AC_MSG_CHECKING(alternate thread library) | |
3043 | case "$target" in | |
3044 | # TLS support was backported to Solaris 8 patches, but only lives in | |
3045 | # the alternate thread library which became the default in Solaris 9. | |
3046 | # We want to always use that, irrespective of TLS support. | |
3047 | *-*-solaris2.8) | |
3048 | # Take multilib subdir into account. There's no spec to handle | |
3049 | # this. The 64 symlink exists since Solaris 8. | |
3050 | lwp_dir=/usr/lib/lwp | |
3051 | lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}" | |
3052 | LDFLAGS="-L$lwp_dir -R$lwp_dir" | |
3053 | ;; | |
3054 | *-*-solaris2*) | |
3055 | lwp_dir="none" | |
3056 | lwp_spec="" | |
3057 | ;; | |
3058 | esac | |
3059 | # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support. | |
3060 | AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec", | |
3061 | [Define to the linker flags to use for -pthread.]) | |
3062 | AC_MSG_RESULT($lwp_dir) | |
3063 | ||
3064 | AC_MSG_CHECKING(library containing $tga_func) | |
3065 | # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr | |
3066 | # (32-bit x86) only lived in libthread, so check for that. Keep | |
3067 | # set_have_as_tls if found, disable if not. | |
3068 | AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no]) | |
3069 | # Clear LIBS if we cannot support TLS. | |
3070 | if test $set_have_as_tls = no; then | |
3071 | LIBS= | |
3072 | fi | |
3073 | # Always define LIB_TLS_SPEC, even without TLS support. | |
3074 | AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS", | |
3075 | [Define to the library containing __tls_get_addr/___tls_get_addr.]) | |
3076 | AC_MSG_RESULT($LIBS) | |
3077 | ||
3078 | LIBS="$save_LIBS" | |
3079 | LDFLAGS="$save_LDFLAGS" | |
3080 | ;; | |
3081 | esac | |
3082 | if test $set_have_as_tls = yes ; then | |
3083 | AC_DEFINE(HAVE_AS_TLS, 1, | |
3084 | [Define if your assembler and linker support thread-local storage.]) | |
3085 | fi | |
3086 | ||
3087 | # Target-specific assembler checks. | |
3088 | ||
3089 | AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) | |
3090 | gcc_cv_ld_static_dynamic=no | |
3091 | if test $in_tree_ld = yes ; then | |
3092 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then | |
3093 | gcc_cv_ld_static_dynamic=yes | |
3094 | fi | |
3095 | elif test x$gcc_cv_ld != x; then | |
3096 | # Check if linker supports -Bstatic/-Bdynamic option | |
3097 | if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \ | |
3098 | && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then | |
3099 | gcc_cv_ld_static_dynamic=yes | |
3100 | fi | |
3101 | fi | |
3102 | if test x"$gcc_cv_ld_static_dynamic" = xyes; then | |
3103 | AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, | |
3104 | [Define if your linker supports -Bstatic/-Bdynamic option.]) | |
3105 | fi | |
3106 | AC_MSG_RESULT($gcc_cv_ld_static_dynamic) | |
3107 | ||
3108 | if test x"$demangler_in_ld" = xyes; then | |
3109 | AC_MSG_CHECKING(linker --demangle support) | |
3110 | gcc_cv_ld_demangle=no | |
3111 | if test $in_tree_ld = yes; then | |
3112 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ | |
3113 | gcc_cv_ld_demangle=yes | |
3114 | fi | |
3115 | elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then | |
3116 | # Check if the GNU linker supports --demangle option | |
3117 | if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then | |
3118 | gcc_cv_ld_demangle=yes | |
3119 | fi | |
3120 | fi | |
3121 | if test x"$gcc_cv_ld_demangle" = xyes; then | |
3122 | AC_DEFINE(HAVE_LD_DEMANGLE, 1, | |
3123 | [Define if your linker supports --demangle option.]) | |
3124 | fi | |
3125 | AC_MSG_RESULT($gcc_cv_ld_demangle) | |
3126 | fi | |
3127 | ||
3128 | case "$target" in | |
3129 | # All TARGET_ABI_OSF targets. | |
3130 | alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*) | |
3131 | gcc_GAS_CHECK_FEATURE([explicit relocation support], | |
3132 | gcc_cv_as_alpha_explicit_relocs, [2,12,0],, | |
3133 | [ .set nomacro | |
3134 | .text | |
3135 | extbl $3, $2, $3 !lituse_bytoff!1 | |
3136 | ldq $2, a($29) !literal!1 | |
3137 | ldq $4, b($29) !literal!2 | |
3138 | ldq_u $3, 0($2) !lituse_base!1 | |
3139 | ldq $27, f($29) !literal!5 | |
3140 | jsr $26, ($27), f !lituse_jsr!5 | |
3141 | ldah $29, 0($26) !gpdisp!3 | |
3142 | lda $0, c($29) !gprel | |
3143 | ldah $1, d($29) !gprelhigh | |
3144 | lda $1, d($1) !gprellow | |
3145 | lda $29, 0($29) !gpdisp!3],, | |
3146 | [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, | |
3147 | [Define if your assembler supports explicit relocations.])]) | |
3148 | gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], | |
3149 | gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, | |
3150 | [ .set nomacro | |
3151 | .text | |
3152 | ldq $27, a($29) !literal!1 | |
3153 | jsr $26, ($27), a !lituse_jsrdirect!1],, | |
3154 | [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, | |
3155 | [Define if your assembler supports the lituse_jsrdirect relocation.])]) | |
3156 | ;; | |
3157 | ||
3158 | cris-*-*) | |
3159 | gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], | |
3160 | gcc_cv_as_cris_no_mul_bug,[2,15,91], | |
3161 | [-no-mul-bug-abort], [.text],, | |
3162 | [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, | |
3163 | [Define if your assembler supports the -no-mul-bug-abort option.])]) | |
3164 | ;; | |
3165 | ||
3166 | sparc*-*-*) | |
3167 | gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,, | |
3168 | [.register %g2, #scratch],, | |
3169 | [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, | |
3170 | [Define if your assembler supports .register.])]) | |
3171 | ||
3172 | gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, | |
3173 | [-relax], [.text],, | |
3174 | [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, | |
3175 | [Define if your assembler supports -relax option.])]) | |
3176 | ||
3177 | gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], | |
3178 | gcc_cv_as_sparc_gotdata_op,, | |
3179 | [-K PIC], | |
3180 | [.text | |
3181 | foo: | |
3182 | nop | |
3183 | bar: | |
3184 | sethi %gdop_hix22(foo), %g1 | |
3185 | xor %g1, %gdop_lox10(foo), %g1 | |
3186 | ld [[%l7 + %g1]], %g2, %gdop(foo)], | |
3187 | [if test x$gcc_cv_ld != x \ | |
3188 | && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then | |
3189 | if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then | |
3190 | if test x$gcc_cv_objdump != x; then | |
3191 | if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ | |
3192 | | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then | |
3193 | gcc_cv_as_sparc_gotdata_op=no | |
3194 | else | |
3195 | gcc_cv_as_sparc_gotdata_op=yes | |
3196 | fi | |
3197 | fi | |
3198 | else | |
3199 | gcc_cv_as_sparc_gotdata_op=yes | |
3200 | fi | |
3201 | fi | |
3202 | rm -f conftest], | |
3203 | [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, | |
3204 | [Define if your assembler and linker support GOTDATA_OP relocs.])]) | |
3205 | ||
3206 | gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], | |
3207 | gcc_cv_as_sparc_ua_pcrel,, | |
3208 | [-K PIC], | |
3209 | [.text | |
3210 | foo: | |
3211 | nop | |
3212 | .data | |
3213 | .align 4 | |
3214 | .byte 0 | |
3215 | .uaword %r_disp32(foo)], | |
3216 | [if test x$gcc_cv_ld != x \ | |
3217 | && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then | |
3218 | gcc_cv_as_sparc_ua_pcrel=yes | |
3219 | fi | |
3220 | rm -f conftest], | |
3221 | [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, | |
3222 | [Define if your assembler and linker support unaligned PC relative relocs.]) | |
3223 | ||
3224 | gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], | |
3225 | gcc_cv_as_sparc_ua_pcrel_hidden,, | |
3226 | [-K PIC], | |
3227 | [.data | |
3228 | .align 4 | |
3229 | .byte 0x31 | |
3230 | .uaword %r_disp32(foo) | |
3231 | .byte 0x32, 0x33, 0x34 | |
3232 | .global foo | |
3233 | .hidden foo | |
3234 | foo: | |
3235 | .skip 4], | |
3236 | [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ | |
3237 | && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ | |
3238 | && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ | |
3239 | | grep ' 31000000 07323334' > /dev/null 2>&1; then | |
3240 | if $gcc_cv_objdump -R conftest 2> /dev/null \ | |
3241 | | grep 'DISP32' > /dev/null 2>&1; then | |
3242 | : | |
3243 | else | |
3244 | gcc_cv_as_sparc_ua_pcrel_hidden=yes | |
3245 | fi | |
3246 | fi | |
3247 | rm -f conftest], | |
3248 | [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, | |
3249 | [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) | |
3250 | ]) # unaligned pcrel relocs | |
3251 | ||
3252 | gcc_GAS_CHECK_FEATURE([offsetable %lo()], | |
3253 | gcc_cv_as_sparc_offsetable_lo10,, | |
3254 | [-xarch=v9], | |
3255 | [.text | |
3256 | or %g1, %lo(ab) + 12, %g1 | |
3257 | or %g1, %lo(ab + 12), %g1], | |
3258 | [if test x$gcc_cv_objdump != x \ | |
3259 | && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ | |
3260 | | grep ' 82106000 82106000' > /dev/null 2>&1; then | |
3261 | gcc_cv_as_sparc_offsetable_lo10=yes | |
3262 | fi], | |
3263 | [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, | |
3264 | [Define if your assembler supports offsetable %lo().])]) | |
3265 | ;; | |
3266 | ||
3267 | changequote(,)dnl | |
3268 | i[34567]86-*-* | x86_64-*-*) | |
3269 | changequote([,])dnl | |
3270 | case $target_os in | |
3271 | cygwin*) | |
3272 | # Full C++ conformance when using a shared libstdc++-v3 requires some | |
3273 | # support from the Cygwin DLL, which in more recent versions exports | |
3274 | # wrappers to aid in interposing and redirecting operators new, delete, | |
3275 | # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we | |
3276 | # are configuring for a version of Cygwin that exports the wrappers. | |
3277 | if test x$host = x$target; then | |
3278 | AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) | |
3279 | else | |
3280 | # Can't check presence of libc functions during cross-compile, so | |
3281 | # we just have to assume we're building for an up-to-date target. | |
3282 | gcc_ac_cygwin_dll_wrappers=yes | |
3283 | fi | |
3284 | AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, | |
3285 | [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], | |
3286 | [Define if you want to generate code by default that assumes that the | |
3287 | Cygwin DLL exports wrappers to support libstdc++ function replacement.]) | |
3288 | esac | |
3289 | case $target_os in | |
3290 | cygwin* | pe | mingw32*) | |
3291 | # Recent binutils allows the three-operand form of ".comm" on PE. This | |
3292 | # definition is used unconditionally to initialise the default state of | |
3293 | # the target option variable that governs usage of the feature. | |
3294 | gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, | |
3295 | [2,19,52],,[.comm foo,1,32]) | |
3296 | AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, | |
3297 | [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], | |
3298 | [Define if your assembler supports specifying the alignment | |
3299 | of objects allocated using the GAS .comm command.]) | |
3300 | # Used for DWARF 2 in PE | |
3301 | gcc_GAS_CHECK_FEATURE([.secrel32 relocs], | |
3302 | gcc_cv_as_ix86_pe_secrel32, | |
3303 | [2,15,91],, | |
3304 | [.text | |
3305 | foo: nop | |
3306 | .data | |
3307 | .secrel32 foo], | |
3308 | [if test x$gcc_cv_ld != x \ | |
3309 | && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then | |
3310 | gcc_cv_as_ix86_pe_secrel32=yes | |
3311 | fi | |
3312 | rm -f conftest], | |
3313 | [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, | |
3314 | [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) | |
3315 | # Test if the assembler supports the extended form of the .section | |
3316 | # directive that specifies section alignment. LTO support uses this, | |
3317 | # but normally only after installation, so we warn but don't fail the | |
3318 | # configure if LTO is enabled but the assembler does not support it. | |
3319 | gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, | |
3320 | [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) | |
3321 | if test x$gcc_cv_as_section_has_align != xyes; then | |
3322 | case ",$enable_languages," in | |
3323 | *,lto,*) | |
3324 | AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) | |
3325 | ;; | |
3326 | esac | |
3327 | fi | |
3328 | ;; | |
3329 | esac | |
3330 | ||
3331 | gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], | |
3332 | gcc_cv_as_ix86_filds,,, | |
3333 | [filds mem; fists mem],, | |
3334 | [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, | |
3335 | [Define if your assembler uses filds and fists mnemonics.])]) | |
3336 | ||
3337 | gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], | |
3338 | gcc_cv_as_ix86_fildq,,, | |
3339 | [fildq mem; fistpq mem],, | |
3340 | [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, | |
3341 | [Define if your assembler uses fildq and fistq mnemonics.])]) | |
3342 | ||
3343 | gcc_GAS_CHECK_FEATURE([cmov syntax], | |
3344 | gcc_cv_as_ix86_cmov_sun_syntax,,, | |
3345 | [cmovl.l %edx, %eax],, | |
3346 | [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, | |
3347 | [Define if your assembler supports the Sun syntax for cmov.])]) | |
3348 | ||
3349 | gcc_GAS_CHECK_FEATURE([ffreep mnemonic], | |
3350 | gcc_cv_as_ix86_ffreep,,, | |
3351 | [ffreep %st(1)],, | |
3352 | [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, | |
3353 | [Define if your assembler supports the ffreep mnemonic.])]) | |
3354 | ||
3355 | gcc_GAS_CHECK_FEATURE([.quad directive], | |
3356 | gcc_cv_as_ix86_quad,,, | |
3357 | [.quad 0],, | |
3358 | [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, | |
3359 | [Define if your assembler supports the .quad directive.])]) | |
3360 | ||
3361 | gcc_GAS_CHECK_FEATURE([sahf mnemonic], | |
3362 | gcc_cv_as_ix86_sahf,,, | |
3363 | [.code64 | |
3364 | sahf],, | |
3365 | [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, | |
3366 | [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) | |
3367 | ||
3368 | gcc_GAS_CHECK_FEATURE([swap suffix], | |
3369 | gcc_cv_as_ix86_swap,,, | |
3370 | [movl.s %esp, %ebp],, | |
3371 | [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, | |
3372 | [Define if your assembler supports the swap suffix.])]) | |
3373 | ||
3374 | gcc_GAS_CHECK_FEATURE([different section symbol subtraction], | |
3375 | gcc_cv_as_ix86_diff_sect_delta,,, | |
3376 | [.section .rodata | |
3377 | .L1: | |
3378 | .long .L2-.L1 | |
3379 | .long .L3-.L1 | |
3380 | .text | |
3381 | .L3: nop | |
3382 | .L2: nop],, | |
3383 | [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, | |
3384 | [Define if your assembler supports the subtraction of symbols in different sections.])]) | |
3385 | ||
3386 | # These two are used unconditionally by i386.[ch]; it is to be defined | |
3387 | # to 1 if the feature is present, 0 otherwise. | |
3388 | gcc_GAS_CHECK_FEATURE([GOTOFF in data], | |
3389 | gcc_cv_as_ix86_gotoff_in_data, [2,11,0],, | |
3390 | [ .text | |
3391 | .L0: | |
3392 | nop | |
3393 | .data | |
3394 | .long .L0@GOTOFF]) | |
3395 | AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, | |
3396 | [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], | |
3397 | [Define true if the assembler supports '.long foo@GOTOFF'.]) | |
3398 | ||
3399 | gcc_GAS_CHECK_FEATURE([rep and lock prefix], | |
3400 | gcc_cv_as_ix86_rep_lock_prefix,,, | |
3401 | [rep movsl | |
3402 | lock addl %edi, (%eax,%esi) | |
3403 | lock orl $0, (%esp)],, | |
3404 | [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, | |
3405 | [Define if the assembler supports 'rep <insn>, lock <insn>'.])]) | |
3406 | ||
3407 | ;; | |
3408 | ||
3409 | ia64*-*-*) | |
3410 | gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], | |
3411 | gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, | |
3412 | [ .text | |
3413 | addl r15 = @ltoffx(x#), gp | |
3414 | ;; | |
3415 | ld8.mov r16 = [[r15]], x#],, | |
3416 | [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, | |
3417 | [Define if your assembler supports ltoffx and ldxmov relocations.])]) | |
3418 | ||
3419 | ;; | |
3420 | ||
3421 | powerpc*-*-*) | |
3422 | case $target in | |
3423 | *-*-aix*) conftest_s=' .machine "pwr5" | |
3424 | .csect .text[[PR]] | |
3425 | mfcr 3,128';; | |
3426 | *-*-darwin*) | |
3427 | gcc_GAS_CHECK_FEATURE([.machine directive support], | |
3428 | gcc_cv_as_machine_directive,,, | |
3429 | [ .machine ppc7400]) | |
3430 | if test x$gcc_cv_as_machine_directive != xyes; then | |
3431 | echo "*** This target requires an assembler supporting \".machine\"" >&2 | |
3432 | echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 | |
3433 | test x$build = x$target && exit 1 | |
3434 | fi | |
3435 | conftest_s=' .text | |
3436 | mfcr r3,128';; | |
3437 | *) conftest_s=' .machine power4 | |
3438 | .text | |
3439 | mfcr 3,128';; | |
3440 | esac | |
3441 | ||
3442 | gcc_GAS_CHECK_FEATURE([mfcr field support], | |
3443 | gcc_cv_as_powerpc_mfcrf, [2,14,0],, | |
3444 | [$conftest_s],, | |
3445 | [AC_DEFINE(HAVE_AS_MFCRF, 1, | |
3446 | [Define if your assembler supports mfcr field.])]) | |
3447 | ||
3448 | case $target in | |
3449 | *-*-aix*) conftest_s=' .machine "pwr5" | |
3450 | .csect .text[[PR]] | |
3451 | popcntb 3,3';; | |
3452 | *) conftest_s=' .machine power5 | |
3453 | .text | |
3454 | popcntb 3,3';; | |
3455 | esac | |
3456 | ||
3457 | gcc_GAS_CHECK_FEATURE([popcntb support], | |
3458 | gcc_cv_as_powerpc_popcntb, [2,17,0],, | |
3459 | [$conftest_s],, | |
3460 | [AC_DEFINE(HAVE_AS_POPCNTB, 1, | |
3461 | [Define if your assembler supports popcntb field.])]) | |
3462 | ||
3463 | case $target in | |
3464 | *-*-aix*) conftest_s=' .machine "pwr5x" | |
3465 | .csect .text[[PR]] | |
3466 | frin 1,1';; | |
3467 | *) conftest_s=' .machine power5 | |
3468 | .text | |
3469 | frin 1,1';; | |
3470 | esac | |
3471 | ||
3472 | gcc_GAS_CHECK_FEATURE([fp round support], | |
3473 | gcc_cv_as_powerpc_fprnd, [2,17,0],, | |
3474 | [$conftest_s],, | |
3475 | [AC_DEFINE(HAVE_AS_FPRND, 1, | |
3476 | [Define if your assembler supports fprnd.])]) | |
3477 | ||
3478 | case $target in | |
3479 | *-*-aix*) conftest_s=' .machine "pwr6" | |
3480 | .csect .text[[PR]] | |
3481 | mffgpr 1,3';; | |
3482 | *) conftest_s=' .machine power6 | |
3483 | .text | |
3484 | mffgpr 1,3';; | |
3485 | esac | |
3486 | ||
3487 | gcc_GAS_CHECK_FEATURE([move fp gpr support], | |
3488 | gcc_cv_as_powerpc_mfpgpr, [2,19,2],, | |
3489 | [$conftest_s],, | |
3490 | [AC_DEFINE(HAVE_AS_MFPGPR, 1, | |
3491 | [Define if your assembler supports mffgpr and mftgpr.])]) | |
3492 | ||
3493 | case $target in | |
3494 | *-*-aix*) conftest_s=' .csect .text[[PR]] | |
3495 | LCF..0: | |
3496 | addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; | |
3497 | *-*-darwin*) | |
3498 | conftest_s=' .text | |
3499 | LCF0: | |
3500 | addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; | |
3501 | *) conftest_s=' .text | |
3502 | .LCF0: | |
3503 | addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; | |
3504 | esac | |
3505 | ||
3506 | gcc_GAS_CHECK_FEATURE([rel16 relocs], | |
3507 | gcc_cv_as_powerpc_rel16, [2,17,0], -a32, | |
3508 | [$conftest_s],, | |
3509 | [AC_DEFINE(HAVE_AS_REL16, 1, | |
3510 | [Define if your assembler supports R_PPC_REL16 relocs.])]) | |
3511 | ||
3512 | case $target in | |
3513 | *-*-aix*) conftest_s=' .machine "pwr6" | |
3514 | .csect .text[[PR]] | |
3515 | cmpb 3,4,5';; | |
3516 | *) conftest_s=' .machine power6 | |
3517 | .text | |
3518 | cmpb 3,4,5';; | |
3519 | esac | |
3520 | ||
3521 | gcc_GAS_CHECK_FEATURE([compare bytes support], | |
3522 | gcc_cv_as_powerpc_cmpb, [2,19,2], -a32, | |
3523 | [$conftest_s],, | |
3524 | [AC_DEFINE(HAVE_AS_CMPB, 1, | |
3525 | [Define if your assembler supports cmpb.])]) | |
3526 | ||
3527 | case $target in | |
3528 | *-*-aix*) conftest_s=' .machine "pwr6" | |
3529 | .csect .text[[PR]] | |
3530 | dadd 1,2,3';; | |
3531 | *) conftest_s=' .machine power6 | |
3532 | .text | |
3533 | dadd 1,2,3';; | |
3534 | esac | |
3535 | ||
3536 | gcc_GAS_CHECK_FEATURE([decimal float support], | |
3537 | gcc_cv_as_powerpc_dfp, [2,19,2], -a32, | |
3538 | [$conftest_s],, | |
3539 | [AC_DEFINE(HAVE_AS_DFP, 1, | |
3540 | [Define if your assembler supports DFP instructions.])]) | |
3541 | ||
3542 | case $target in | |
3543 | *-*-aix*) conftest_s=' .machine "pwr7" | |
3544 | .csect .text[[PR]] | |
3545 | lxvd2x 1,2,3';; | |
3546 | *) conftest_s=' .machine power7 | |
3547 | .text | |
3548 | lxvd2x 1,2,3';; | |
3549 | esac | |
3550 | ||
3551 | gcc_GAS_CHECK_FEATURE([vector-scalar support], | |
3552 | gcc_cv_as_powerpc_vsx, [2,19,2], -a32, | |
3553 | [$conftest_s],, | |
3554 | [AC_DEFINE(HAVE_AS_VSX, 1, | |
3555 | [Define if your assembler supports VSX instructions.])]) | |
3556 | ||
3557 | case $target in | |
3558 | *-*-aix*) conftest_s=' .machine "pwr7" | |
3559 | .csect .text[[PR]] | |
3560 | popcntd 3,3';; | |
3561 | *) conftest_s=' .machine power7 | |
3562 | .text | |
3563 | popcntd 3,3';; | |
3564 | esac | |
3565 | ||
3566 | gcc_GAS_CHECK_FEATURE([popcntd support], | |
3567 | gcc_cv_as_powerpc_popcntd, [2,19,2], -a32, | |
3568 | [$conftest_s],, | |
3569 | [AC_DEFINE(HAVE_AS_POPCNTD, 1, | |
3570 | [Define if your assembler supports POPCNTD instructions.])]) | |
3571 | ||
3572 | case $target in | |
3573 | *-*-aix*) conftest_s=' .csect .text[[PR]] | |
3574 | lwsync';; | |
3575 | *) conftest_s=' .text | |
3576 | lwsync';; | |
3577 | esac | |
3578 | ||
3579 | gcc_GAS_CHECK_FEATURE([lwsync support], | |
3580 | gcc_cv_as_powerpc_lwsync, [2,19,2], -a32, | |
3581 | [$conftest_s],, | |
3582 | [AC_DEFINE(HAVE_AS_LWSYNC, 1, | |
3583 | [Define if your assembler supports LWSYNC instructions.])]) | |
3584 | ||
3585 | case $target in | |
3586 | *-*-aix*) conftest_s=' .machine "476" | |
3587 | .csect .text[[PR]] | |
3588 | dci 0';; | |
3589 | *) conftest_s=' .machine "476" | |
3590 | .text | |
3591 | dci 0';; | |
3592 | esac | |
3593 | ||
3594 | gcc_GAS_CHECK_FEATURE([data cache invalidate support], | |
3595 | gcc_cv_as_powerpc_dci, [9,99,0], -a32, | |
3596 | [$conftest_s],, | |
3597 | [AC_DEFINE(HAVE_AS_DCI, 1, | |
3598 | [Define if your assembler supports the DCI/ICI instructions.])]) | |
3599 | ||
3600 | gcc_GAS_CHECK_FEATURE([.gnu_attribute support], | |
3601 | gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, | |
3602 | [.gnu_attribute 4,1],, | |
3603 | [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, | |
3604 | [Define if your assembler supports .gnu_attribute.])]) | |
3605 | ||
3606 | gcc_GAS_CHECK_FEATURE([tls marker support], | |
3607 | gcc_cv_as_powerpc_tls_markers, [2,20,0],, | |
3608 | [ bl __tls_get_addr(x@tlsgd)],, | |
3609 | [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1, | |
3610 | [Define if your assembler supports arg info for __tls_get_addr.])]) | |
3611 | ||
3612 | case $target in | |
3613 | *-*-aix*) | |
3614 | gcc_GAS_CHECK_FEATURE([.ref support], | |
3615 | gcc_cv_as_aix_ref, [2.21.0],, | |
3616 | [ .csect stuff[[rw]] | |
3617 | stuff: | |
3618 | .long 1 | |
3619 | .extern sym | |
3620 | .ref sym | |
3621 | ],, | |
3622 | [AC_DEFINE(HAVE_AS_REF, 1, | |
3623 | [Define if your assembler supports .ref])]) | |
3624 | ;; | |
3625 | esac | |
3626 | ;; | |
3627 | ||
3628 | mips*-*-*) | |
3629 | gcc_GAS_CHECK_FEATURE([explicit relocation support], | |
3630 | gcc_cv_as_mips_explicit_relocs, [2,14,0],, | |
3631 | [ lw $4,%gp_rel(foo)($4)],, | |
3632 | [if test x$target_cpu_default = x | |
3633 | then target_cpu_default=MASK_EXPLICIT_RELOCS | |
3634 | else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" | |
3635 | fi]) | |
3636 | gcc_GAS_CHECK_FEATURE([-mno-shared support], | |
3637 | gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, | |
3638 | [AC_DEFINE(HAVE_AS_NO_SHARED, 1, | |
3639 | [Define if the assembler understands -mno-shared.])]) | |
3640 | ||
3641 | gcc_GAS_CHECK_FEATURE([.gnu_attribute support], | |
3642 | gcc_cv_as_mips_gnu_attribute, [2,18,0],, | |
3643 | [.gnu_attribute 4,1],, | |
3644 | [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, | |
3645 | [Define if your assembler supports .gnu_attribute.])]) | |
3646 | ||
3647 | gcc_GAS_CHECK_FEATURE([.dtprelword support], | |
3648 | gcc_cv_as_mips_dtprelword, [2,18,0],, | |
3649 | [.section .tdata,"awT",@progbits | |
3650 | x: | |
3651 | .word 2 | |
3652 | .text | |
3653 | .dtprelword x+0x8000],, | |
3654 | [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, | |
3655 | [Define if your assembler supports .dtprelword.])]) | |
3656 | ||
3657 | gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], | |
3658 | gcc_cv_as_mips_dspr1_mult,,, | |
3659 | [ .set mips32r2 | |
3660 | .set nodspr2 | |
3661 | .set dsp | |
3662 | madd $ac3,$4,$5 | |
3663 | maddu $ac3,$4,$5 | |
3664 | msub $ac3,$4,$5 | |
3665 | msubu $ac3,$4,$5 | |
3666 | mult $ac3,$4,$5 | |
3667 | multu $ac3,$4,$5],, | |
3668 | [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, | |
3669 | [Define if your assembler supports DSPR1 mult.])]) | |
3670 | ||
3671 | AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) | |
3672 | gcc_cv_as_ld_jalr_reloc=no | |
3673 | if test $gcc_cv_as_mips_explicit_relocs = yes; then | |
3674 | if test $in_tree_ld = yes ; then | |
3675 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
3676 | && test $in_tree_ld_is_elf = yes; then | |
3677 | gcc_cv_as_ld_jalr_reloc=yes | |
3678 | fi | |
3679 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then | |
3680 | echo ' .ent x' > conftest.s | |
3681 | echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s | |
3682 | echo ' ld $25,%call16(y)($28)' >> conftest.s | |
3683 | echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s | |
3684 | echo '1: jalr $25' >> conftest.s | |
3685 | echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s | |
3686 | echo '1: jalr $25' >> conftest.s | |
3687 | echo ' .end x' >> conftest.s | |
3688 | if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ | |
3689 | && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then | |
3690 | if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ | |
3691 | && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then | |
3692 | gcc_cv_as_ld_jalr_reloc=yes | |
3693 | fi | |
3694 | fi | |
3695 | rm -f conftest.* | |
3696 | fi | |
3697 | fi | |
3698 | if test $gcc_cv_as_ld_jalr_reloc = yes; then | |
3699 | if test x$target_cpu_default = x; then | |
3700 | target_cpu_default=MASK_RELAX_PIC_CALLS | |
3701 | else | |
3702 | target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" | |
3703 | fi | |
3704 | fi | |
3705 | AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) | |
3706 | ||
3707 | AC_CACHE_CHECK([linker for .eh_frame personality relaxation], | |
3708 | [gcc_cv_ld_mips_personality_relaxation], | |
3709 | [gcc_cv_ld_mips_personality_relaxation=no | |
3710 | if test $in_tree_ld = yes ; then | |
3711 | if test "$gcc_cv_gld_major_version" -eq 2 \ | |
3712 | -a "$gcc_cv_gld_minor_version" -ge 21 \ | |
3713 | -o "$gcc_cv_gld_major_version" -gt 2; then | |
3714 | gcc_cv_ld_mips_personality_relaxation=yes | |
3715 | fi | |
3716 | elif test x$gcc_cv_as != x \ | |
3717 | -a x$gcc_cv_ld != x \ | |
3718 | -a x$gcc_cv_readelf != x ; then | |
3719 | cat > conftest.s <<EOF | |
3720 | .cfi_startproc | |
3721 | .cfi_personality 0x80,indirect_ptr | |
3722 | .ent test | |
3723 | test: | |
3724 | nop | |
3725 | .end test | |
3726 | .cfi_endproc | |
3727 | ||
3728 | .section .data,"aw",@progbits | |
3729 | indirect_ptr: | |
3730 | .dc.a personality | |
3731 | EOF | |
3732 | if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \ | |
3733 | && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then | |
3734 | if $gcc_cv_readelf -d conftest 2>&1 \ | |
3735 | | grep TEXTREL > /dev/null 2>&1; then | |
3736 | : | |
3737 | elif $gcc_cv_readelf --relocs conftest 2>&1 \ | |
3738 | | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then | |
3739 | : | |
3740 | else | |
3741 | gcc_cv_ld_mips_personality_relaxation=yes | |
3742 | fi | |
3743 | fi | |
3744 | fi | |
3745 | rm -f conftest.s conftest.o conftest]) | |
3746 | if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then | |
3747 | AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, | |
3748 | [Define if your linker can relax absolute .eh_frame personality | |
3749 | pointers into PC-relative form.]) | |
3750 | fi | |
3751 | ;; | |
3752 | esac | |
3753 | ||
3754 | # Mips and HP-UX need the GNU assembler. | |
3755 | # Linux on IA64 might be able to use the Intel assembler. | |
3756 | ||
3757 | case "$target" in | |
3758 | mips*-*-* | *-*-hpux* ) | |
3759 | if test x$gas_flag = xyes \ | |
3760 | || test x"$host" != x"$build" \ | |
3761 | || test ! -x "$gcc_cv_as" \ | |
3762 | || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then | |
3763 | : | |
3764 | else | |
3765 | echo "*** This configuration requires the GNU assembler" >&2 | |
3766 | exit 1 | |
3767 | fi | |
3768 | ;; | |
3769 | esac | |
3770 | ||
3771 | # ??? Not all targets support dwarf2 debug_line, even within a version | |
3772 | # of gas. Moreover, we need to emit a valid instruction to trigger any | |
3773 | # info to the output file. So, as supported targets are added to gas 2.11, | |
3774 | # add some instruction here to (also) show we expect this might work. | |
3775 | # ??? Once 2.11 is released, probably need to add first known working | |
3776 | # version to the per-target configury. | |
3777 | case "$cpu_type" in | |
3778 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \ | |
3779 | | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa) | |
3780 | insn="nop" | |
3781 | ;; | |
3782 | ia64 | s390) | |
3783 | insn="nop 0" | |
3784 | ;; | |
3785 | mmix) | |
3786 | insn="swym 0" | |
3787 | ;; | |
3788 | esac | |
3789 | if test x"$insn" != x; then | |
3790 | conftest_s="\ | |
3791 | .file 1 \"conftest.s\" | |
3792 | .loc 1 3 0 | |
3793 | $insn" | |
3794 | gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], | |
3795 | gcc_cv_as_dwarf2_debug_line, | |
3796 | [elf,2,11,0],, [$conftest_s], | |
3797 | [if test x$gcc_cv_objdump != x \ | |
3798 | && $gcc_cv_objdump -h conftest.o 2> /dev/null \ | |
3799 | | grep debug_line > /dev/null 2>&1; then | |
3800 | gcc_cv_as_dwarf2_debug_line=yes | |
3801 | fi]) | |
3802 | ||
3803 | # The .debug_line file table must be in the exact order that | |
3804 | # we specified the files, since these indices are also used | |
3805 | # by DW_AT_decl_file. Approximate this test by testing if | |
3806 | # the assembler bitches if the same index is assigned twice. | |
3807 | gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], | |
3808 | gcc_cv_as_dwarf2_file_buggy,,, | |
3809 | [ .file 1 "foo.s" | |
3810 | .file 1 "bar.s"]) | |
3811 | ||
3812 | if test $gcc_cv_as_dwarf2_debug_line = yes \ | |
3813 | && test $gcc_cv_as_dwarf2_file_buggy = no; then | |
3814 | AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, | |
3815 | [Define if your assembler supports dwarf2 .file/.loc directives, | |
3816 | and preserves file table indices exactly as given.]) | |
3817 | fi | |
3818 | ||
3819 | gcc_GAS_CHECK_FEATURE([--gdwarf2 option], | |
3820 | gcc_cv_as_gdwarf2_flag, | |
3821 | [elf,2,11,0], [--gdwarf2], [$insn],, | |
3822 | [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, | |
3823 | [Define if your assembler supports the --gdwarf2 option.])]) | |
3824 | ||
3825 | gcc_GAS_CHECK_FEATURE([--gstabs option], | |
3826 | gcc_cv_as_gstabs_flag, | |
3827 | [elf,2,11,0], [--gstabs], [$insn], | |
3828 | [# The native Solaris 9/Intel assembler doesn't understand --gstabs | |
3829 | # and warns about it, but still exits successfully. So check for | |
3830 | # this. | |
3831 | if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null]) | |
3832 | then : | |
3833 | else gcc_cv_as_gstabs_flag=yes | |
3834 | fi], | |
3835 | [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, | |
3836 | [Define if your assembler supports the --gstabs option.])]) | |
3837 | ||
3838 | gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], | |
3839 | gcc_cv_as_debug_prefix_map_flag, | |
3840 | [2,18,0], [--debug-prefix-map /a=/b], [$insn],, | |
3841 | [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, | |
3842 | [Define if your assembler supports the --debug-prefix-map option.])]) | |
3843 | fi | |
3844 | ||
3845 | gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, | |
3846 | ,, | |
3847 | [.lcomm bar,4,16],, | |
3848 | [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, | |
3849 | [Define if your assembler supports .lcomm with an alignment field.])]) | |
3850 | ||
3851 | AC_ARG_ENABLE(gnu-unique-object, | |
3852 | [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on | |
3853 | glibc systems], | |
3854 | [case $enable_gnu_unique_object in | |
3855 | yes | no) ;; | |
3856 | *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. | |
3857 | Valid choices are 'yes' and 'no'.]) ;; | |
3858 | esac], | |
3859 | [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, | |
3860 | [elf,2,19,52],, | |
3861 | [.type foo, @gnu_unique_object],, | |
3862 | # Also check for ld.so support, i.e. glibc 2.11 or higher. | |
3863 | [[if test x$host = x$build -a x$host = x$target && | |
3864 | glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then | |
3865 | glibcmajor=`expr "$glibcver" : "\([0-9]*\)"` | |
3866 | glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"` | |
3867 | glibcnum=`expr $glibcmajor \* 1000 + $glibcminor` | |
3868 | if test "$glibcnum" -ge 2011 ; then | |
3869 | enable_gnu_unique_object=yes | |
3870 | fi | |
3871 | fi]])]) | |
3872 | if test x$enable_gnu_unique_object = xyes; then | |
3873 | AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, | |
3874 | [Define if your assembler supports @gnu_unique_object.]) | |
3875 | fi | |
3876 | ||
3877 | AC_CACHE_CHECK([assembler for tolerance to line number 0], | |
3878 | [gcc_cv_as_line_zero], | |
3879 | [gcc_cv_as_line_zero=no | |
3880 | if test $in_tree_gas = yes; then | |
3881 | gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) | |
3882 | elif test "x$gcc_cv_as" != x; then | |
3883 | { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s | |
3884 | if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && | |
3885 | test "x`cat conftest.out`" = x | |
3886 | then | |
3887 | gcc_cv_as_line_zero=yes | |
3888 | else | |
3889 | echo "configure: failed program was" >&AS_MESSAGE_LOG_FD | |
3890 | cat conftest.s >&AS_MESSAGE_LOG_FD | |
3891 | echo "configure: error output was" >&AS_MESSAGE_LOG_FD | |
3892 | cat conftest.out >&AS_MESSAGE_LOG_FD | |
3893 | fi | |
3894 | rm -f conftest.o conftest.s conftest.out | |
3895 | fi]) | |
3896 | if test "x$gcc_cv_as_line_zero" = xyes; then | |
3897 | AC_DEFINE([HAVE_AS_LINE_ZERO], 1, | |
3898 | [Define if the assembler won't complain about a line such as # 0 "" 2.]) | |
3899 | fi | |
3900 | ||
3901 | AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) | |
3902 | gcc_cv_ld_eh_frame_hdr=no | |
3903 | if test $in_tree_ld = yes ; then | |
3904 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
3905 | && test $in_tree_ld_is_elf = yes; then | |
3906 | gcc_cv_ld_eh_frame_hdr=yes | |
3907 | fi | |
3908 | elif test x$gcc_cv_ld != x; then | |
3909 | # Check if linker supports --eh-frame-hdr option | |
3910 | if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then | |
3911 | gcc_cv_ld_eh_frame_hdr=yes | |
3912 | fi | |
3913 | fi | |
3914 | GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) | |
3915 | if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then | |
3916 | AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, | |
3917 | [Define if your linker supports --eh-frame-hdr option.]) | |
3918 | fi | |
3919 | AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) | |
3920 | ||
3921 | AC_MSG_CHECKING(linker position independent executable support) | |
3922 | gcc_cv_ld_pie=no | |
3923 | if test $in_tree_ld = yes ; then | |
3924 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
3925 | && test $in_tree_ld_is_elf = yes; then | |
3926 | gcc_cv_ld_pie=yes | |
3927 | fi | |
3928 | elif test x$gcc_cv_ld != x; then | |
3929 | # Check if linker supports -pie option | |
3930 | if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then | |
3931 | gcc_cv_ld_pie=yes | |
3932 | fi | |
3933 | fi | |
3934 | if test x"$gcc_cv_ld_pie" = xyes; then | |
3935 | AC_DEFINE(HAVE_LD_PIE, 1, | |
3936 | [Define if your linker supports -pie option.]) | |
3937 | fi | |
3938 | AC_MSG_RESULT($gcc_cv_ld_pie) | |
3939 | ||
3940 | AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) | |
3941 | gcc_cv_ld_eh_gc_sections=no | |
3942 | if test $in_tree_ld = yes ; then | |
3943 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
3944 | && test $in_tree_ld_is_elf = yes; then | |
3945 | gcc_cv_ld_eh_gc_sections=yes | |
3946 | fi | |
3947 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then | |
3948 | cat > conftest.s <<EOF | |
3949 | .section .text | |
3950 | .globl _start | |
3951 | .type _start, @function | |
3952 | _start: | |
3953 | .long foo | |
3954 | .size _start, .-_start | |
3955 | .section .text.foo,"ax",@progbits | |
3956 | .type foo, @function | |
3957 | foo: | |
3958 | .long 0 | |
3959 | .size foo, .-foo | |
3960 | .section .gcc_except_table.foo,"a",@progbits | |
3961 | .L0: | |
3962 | .long 0 | |
3963 | .section .eh_frame,"a",@progbits | |
3964 | .long .L0 | |
3965 | EOF | |
3966 | if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then | |
3967 | if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | |
3968 | | grep "gc-sections option ignored" > /dev/null; then | |
3969 | gcc_cv_ld_eh_gc_sections=no | |
3970 | elif $gcc_cv_objdump -h conftest 2> /dev/null \ | |
3971 | | grep gcc_except_table > /dev/null; then | |
3972 | gcc_cv_ld_eh_gc_sections=yes | |
3973 | # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. | |
3974 | if test x$gcc_cv_as_comdat_group != xyes; then | |
3975 | gcc_cv_ld_eh_gc_sections=no | |
3976 | cat > conftest.s <<EOF | |
3977 | .section .text | |
3978 | .globl _start | |
3979 | .type _start, @function | |
3980 | _start: | |
3981 | .long foo | |
3982 | .size _start, .-_start | |
3983 | .section .gnu.linkonce.t.foo,"ax",@progbits | |
3984 | .type foo, @function | |
3985 | foo: | |
3986 | .long 0 | |
3987 | .size foo, .-foo | |
3988 | .section .gcc_except_table.foo,"a",@progbits | |
3989 | .L0: | |
3990 | .long 0 | |
3991 | .section .eh_frame,"a",@progbits | |
3992 | .long .L0 | |
3993 | EOF | |
3994 | if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then | |
3995 | if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | |
3996 | | grep "gc-sections option ignored" > /dev/null; then | |
3997 | gcc_cv_ld_eh_gc_sections=no | |
3998 | elif $gcc_cv_objdump -h conftest 2> /dev/null \ | |
3999 | | grep gcc_except_table > /dev/null; then | |
4000 | gcc_cv_ld_eh_gc_sections=yes | |
4001 | fi | |
4002 | fi | |
4003 | fi | |
4004 | fi | |
4005 | fi | |
4006 | rm -f conftest.s conftest.o conftest | |
4007 | fi | |
4008 | case "$target" in | |
4009 | hppa*-*-linux*) | |
4010 | # ??? This apparently exposes a binutils bug with PC-relative relocations. | |
4011 | gcc_cv_ld_eh_gc_sections=no | |
4012 | ;; | |
4013 | esac | |
4014 | if test x$gcc_cv_ld_eh_gc_sections = xyes; then | |
4015 | AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, | |
4016 | [Define if your linker supports garbage collection of | |
4017 | sections in presence of EH frames.]) | |
4018 | fi | |
4019 | AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) | |
4020 | ||
4021 | # -------- | |
4022 | # UNSORTED | |
4023 | # -------- | |
4024 | ||
4025 | AC_CACHE_CHECK(linker --as-needed support, | |
4026 | gcc_cv_ld_as_needed, | |
4027 | [gcc_cv_ld_as_needed=no | |
4028 | if test $in_tree_ld = yes ; then | |
4029 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
4030 | && test $in_tree_ld_is_elf = yes; then | |
4031 | gcc_cv_ld_as_needed=yes | |
4032 | fi | |
4033 | elif test x$gcc_cv_ld != x; then | |
4034 | # Check if linker supports --as-needed and --no-as-needed options | |
4035 | if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then | |
4036 | gcc_cv_ld_as_needed=yes | |
4037 | fi | |
4038 | fi | |
4039 | ]) | |
4040 | if test x"$gcc_cv_ld_as_needed" = xyes; then | |
4041 | AC_DEFINE(HAVE_LD_AS_NEEDED, 1, | |
4042 | [Define if your linker supports --as-needed and --no-as-needed options.]) | |
4043 | fi | |
4044 | ||
4045 | case "$target:$tm_file" in | |
4046 | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) | |
4047 | AC_CACHE_CHECK(linker support for omitting dot symbols, | |
4048 | gcc_cv_ld_no_dot_syms, | |
4049 | [gcc_cv_ld_no_dot_syms=no | |
4050 | if test $in_tree_ld = yes ; then | |
4051 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then | |
4052 | gcc_cv_ld_no_dot_syms=yes | |
4053 | fi | |
4054 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then | |
4055 | cat > conftest1.s <<EOF | |
4056 | .text | |
4057 | bl .foo | |
4058 | EOF | |
4059 | cat > conftest2.s <<EOF | |
4060 | .section ".opd","aw" | |
4061 | .align 3 | |
4062 | .globl foo | |
4063 | .type foo,@function | |
4064 | foo: | |
4065 | .quad .LEfoo,.TOC.@tocbase,0 | |
4066 | .text | |
4067 | .LEfoo: | |
4068 | blr | |
4069 | .size foo,.-.LEfoo | |
4070 | EOF | |
4071 | if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ | |
4072 | && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ | |
4073 | && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then | |
4074 | gcc_cv_ld_no_dot_syms=yes | |
4075 | fi | |
4076 | rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s | |
4077 | fi | |
4078 | ]) | |
4079 | if test x"$gcc_cv_ld_no_dot_syms" = xyes; then | |
4080 | AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, | |
4081 | [Define if your PowerPC64 linker only needs function descriptor syms.]) | |
4082 | fi | |
4083 | ||
4084 | AC_CACHE_CHECK(linker large toc support, | |
4085 | gcc_cv_ld_large_toc, | |
4086 | [gcc_cv_ld_large_toc=no | |
4087 | if test $in_tree_ld = yes ; then | |
4088 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then | |
4089 | gcc_cv_ld_large_toc=yes | |
4090 | fi | |
4091 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then | |
4092 | cat > conftest.s <<EOF | |
4093 | .section ".tbss","awT",@nobits | |
4094 | .align 3 | |
4095 | ie0: .space 8 | |
4096 | .global _start | |
4097 | .text | |
4098 | _start: | |
4099 | addis 9,13,ie0@got@tprel@ha | |
4100 | ld 9,ie0@got@tprel@l(9) | |
4101 | EOF | |
4102 | if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ | |
4103 | && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then | |
4104 | gcc_cv_ld_large_toc=yes | |
4105 | fi | |
4106 | rm -f conftest conftest.o conftest.s | |
4107 | fi | |
4108 | ]) | |
4109 | if test x"$gcc_cv_ld_large_toc" = xyes; then | |
4110 | AC_DEFINE(HAVE_LD_LARGE_TOC, 1, | |
4111 | [Define if your PowerPC64 linker supports a large TOC.]) | |
4112 | fi | |
4113 | ;; | |
4114 | esac | |
4115 | ||
4116 | AC_CACHE_CHECK(linker --build-id support, | |
4117 | gcc_cv_ld_buildid, | |
4118 | [gcc_cv_ld_buildid=no | |
4119 | if test $in_tree_ld = yes ; then | |
4120 | if test "$gcc_cv_gld_major_version" -eq 2 -a \ | |
4121 | "$gcc_cv_gld_minor_version" -ge 18 -o \ | |
4122 | "$gcc_cv_gld_major_version" -gt 2 \ | |
4123 | && test $in_tree_ld_is_elf = yes; then | |
4124 | gcc_cv_ld_buildid=yes | |
4125 | fi | |
4126 | elif test x$gcc_cv_ld != x; then | |
4127 | if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then | |
4128 | gcc_cv_ld_buildid=yes | |
4129 | fi | |
4130 | fi]) | |
4131 | if test x"$gcc_cv_ld_buildid" = xyes; then | |
4132 | AC_DEFINE(HAVE_LD_BUILDID, 1, | |
4133 | [Define if your linker supports --build-id.]) | |
4134 | fi | |
4135 | ||
4136 | AC_ARG_ENABLE(linker-build-id, | |
4137 | [ --enable-linker-build-id | |
4138 | compiler will always pass --build-id to linker], | |
4139 | [], | |
4140 | enable_linker_build_id=no) | |
4141 | ||
4142 | if test x"$enable_linker_build_id" = xyes; then | |
4143 | if test x"$gcc_cv_ld_buildid" = xyes; then | |
4144 | AC_DEFINE(ENABLE_LD_BUILDID, 1, | |
4145 | [Define if gcc should always pass --build-id to linker.]) | |
4146 | else | |
4147 | AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) | |
4148 | fi | |
4149 | fi | |
4150 | ||
4151 | # In binutils 2.21, GNU ld gained support for new emulations fully | |
4152 | # supporting the Solaris 2 ABI. Detect their presence in the linker used. | |
4153 | AC_CACHE_CHECK(linker *_sol2 emulation support, | |
4154 | gcc_cv_ld_sol2_emulation, | |
4155 | [gcc_cv_ld_sol2_emulation=no | |
4156 | if test $in_tree_ld = yes ; then | |
4157 | if test "$gcc_cv_gld_major_version" -eq 2 -a \ | |
4158 | "$gcc_cv_gld_minor_version" -ge 21 -o \ | |
4159 | "$gcc_cv_gld_major_version" -gt 2 \ | |
4160 | && test $in_tree_ld_is_elf = yes; then | |
4161 | gcc_cv_ld_sol2_emulation=yes | |
4162 | fi | |
4163 | elif test x$gcc_cv_ld != x; then | |
4164 | if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ | |
4165 | grep _sol2 > /dev/null; then | |
4166 | gcc_cv_ld_sol2_emulation=yes | |
4167 | fi | |
4168 | fi]) | |
4169 | if test x"$gcc_cv_ld_sol2_emulation" = xyes; then | |
4170 | AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, | |
4171 | [Define if your linker supports the *_sol2 emulations.]) | |
4172 | fi | |
4173 | ||
4174 | AC_CACHE_CHECK(linker --sysroot support, | |
4175 | gcc_cv_ld_sysroot, | |
4176 | [gcc_cv_ld_sysroot=no | |
4177 | if test $in_tree_ld = yes ; then | |
4178 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then | |
4179 | gcc_cv_ld_sysroot=yes | |
4180 | fi | |
4181 | elif test x$gcc_cv_ld != x; then | |
4182 | if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then | |
4183 | gcc_cv_ld_sysroot=yes | |
4184 | fi | |
4185 | fi]) | |
4186 | if test x"$gcc_cv_ld_sysroot" = xyes; then | |
4187 | AC_DEFINE(HAVE_LD_SYSROOT, 1, | |
4188 | [Define if your linker supports --sysroot.]) | |
4189 | fi | |
4190 | ||
4191 | if test x$with_sysroot = x && test x$host = x$target \ | |
4192 | && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ | |
4193 | && test "$prefix" != "NONE"; then | |
4194 | AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", | |
4195 | [Define to PREFIX/include if cpp should also search that directory.]) | |
4196 | fi | |
4197 | ||
4198 | # Test for stack protector support in target C library. | |
4199 | AC_CACHE_CHECK(__stack_chk_fail in target C library, | |
4200 | gcc_cv_libc_provides_ssp, | |
4201 | [gcc_cv_libc_provides_ssp=no | |
4202 | case "$target" in | |
4203 | *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu) | |
4204 | if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then | |
4205 | if test "x$with_headers" != x; then | |
4206 | glibc_header_dir=$with_headers | |
4207 | elif test "x$with_sysroot" = x; then | |
4208 | glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" | |
4209 | elif test "x$with_build_sysroot" != "x"; then | |
4210 | glibc_header_dir="${with_build_sysroot}/usr/include" | |
4211 | elif test "x$with_sysroot" = xyes; then | |
4212 | glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include" | |
4213 | else | |
4214 | glibc_header_dir="${with_sysroot}/usr/include" | |
4215 | fi | |
4216 | else | |
4217 | glibc_header_dir=/usr/include | |
4218 | fi | |
4219 | [# glibc 2.4 and later provides __stack_chk_fail and | |
4220 | # either __stack_chk_guard, or TLS access to stack guard canary. | |
4221 | if test -f $glibc_header_dir/features.h \ | |
4222 | && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ | |
4223 | $glibc_header_dir/features.h > /dev/null; then | |
4224 | if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \ | |
4225 | $glibc_header_dir/features.h > /dev/null; then | |
4226 | gcc_cv_libc_provides_ssp=yes | |
4227 | elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \ | |
4228 | $glibc_header_dir/features.h > /dev/null \ | |
4229 | && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \ | |
4230 | $glibc_header_dir/features.h > /dev/null; then | |
4231 | gcc_cv_libc_provides_ssp=yes | |
4232 | elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ | |
4233 | $glibc_header_dir/features.h > /dev/null && \ | |
4234 | test -f $glibc_header_dir/bits/uClibc_config.h && \ | |
4235 | $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ | |
4236 | $glibc_header_dir/bits/uClibc_config.h > /dev/null; then | |
4237 | gcc_cv_libc_provides_ssp=yes | |
4238 | fi | |
4239 | fi] | |
4240 | ;; | |
4241 | *-*-gnu*) | |
4242 | # Avoid complicated tests (see | |
4243 | # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now | |
4244 | # simply assert that glibc does provide this, which is true for all | |
4245 | # realistically usable GNU/Hurd configurations. | |
4246 | gcc_cv_libc_provides_ssp=yes;; | |
4247 | *-*-darwin* | *-*-freebsd*) | |
4248 | AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], | |
4249 | [echo "no __stack_chk_fail on this target"]) | |
4250 | ;; | |
4251 | *) gcc_cv_libc_provides_ssp=no ;; | |
4252 | esac]) | |
4253 | ||
4254 | if test x$gcc_cv_libc_provides_ssp = xyes; then | |
4255 | AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, | |
4256 | [Define if your target C library provides stack protector support]) | |
4257 | fi | |
4258 | ||
4259 | # Check if TFmode long double should be used by default or not. | |
4260 | # Some glibc targets used DFmode long double, but with glibc 2.4 | |
4261 | # and later they can use TFmode. | |
4262 | case "$target" in | |
4263 | powerpc*-*-linux* | \ | |
4264 | powerpc*-*-gnu* | \ | |
4265 | sparc*-*-linux* | \ | |
4266 | s390*-*-linux* | \ | |
4267 | alpha*-*-linux*) | |
4268 | AC_ARG_WITH(long-double-128, | |
4269 | [ --with-long-double-128 Use 128-bit long double by default.], | |
4270 | gcc_cv_target_ldbl128="$with_long_double_128", | |
4271 | [[gcc_cv_target_ldbl128=no | |
4272 | if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then | |
4273 | if test "x$with_sysroot" = x; then | |
4274 | glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" | |
4275 | elif test "x$with_build_sysroot" != "x"; then | |
4276 | glibc_header_dir="${with_build_sysroot}/usr/include" | |
4277 | elif test "x$with_sysroot" = xyes; then | |
4278 | glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include" | |
4279 | else | |
4280 | glibc_header_dir="${with_sysroot}/usr/include" | |
4281 | fi | |
4282 | else | |
4283 | glibc_header_dir=/usr/include | |
4284 | fi | |
4285 | grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ | |
4286 | $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \ | |
4287 | && gcc_cv_target_ldbl128=yes | |
4288 | ]]) | |
4289 | ;; | |
4290 | esac | |
4291 | if test x$gcc_cv_target_ldbl128 = xyes; then | |
4292 | AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, | |
4293 | [Define if TFmode long double should be the default]) | |
4294 | fi | |
4295 | ||
4296 | # Find out what GC implementation we want, or may, use. | |
4297 | AC_ARG_WITH(gc, | |
4298 | [ --with-gc={page,zone} choose the garbage collection mechanism to use | |
4299 | with the compiler], | |
4300 | [case "$withval" in | |
4301 | page) | |
4302 | GGC=ggc-$withval | |
4303 | ;; | |
4304 | zone) | |
4305 | GGC=ggc-$withval | |
4306 | AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use]) | |
4307 | ;; | |
4308 | *) | |
4309 | AC_MSG_ERROR([$withval is an invalid option to --with-gc]) | |
4310 | ;; | |
4311 | esac], | |
4312 | [GGC=ggc-page]) | |
4313 | AC_SUBST(GGC) | |
4314 | echo "Using $GGC for garbage collection." | |
4315 | ||
4316 | # Libraries to use on the host. This will normally be set by the top | |
4317 | # level Makefile. Here we simply capture the value for our Makefile. | |
4318 | if test -z "${HOST_LIBS+set}"; then | |
4319 | HOST_LIBS= | |
4320 | fi | |
4321 | AC_SUBST(HOST_LIBS) | |
4322 | ||
4323 | # Use the system's zlib library. | |
4324 | zlibdir=-L../zlib | |
4325 | zlibinc="-I\$(srcdir)/../zlib" | |
4326 | AC_ARG_WITH(system-zlib, | |
4327 | [ --with-system-zlib use installed libz], | |
4328 | zlibdir= | |
4329 | zlibinc= | |
4330 | ) | |
4331 | AC_SUBST(zlibdir) | |
4332 | AC_SUBST(zlibinc) | |
4333 | ||
4334 | dnl Very limited version of automake's enable-maintainer-mode | |
4335 | ||
4336 | AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) | |
4337 | dnl maintainer-mode is disabled by default | |
4338 | AC_ARG_ENABLE(maintainer-mode, | |
4339 | [ --enable-maintainer-mode | |
4340 | enable make rules and dependencies not useful | |
4341 | (and sometimes confusing) to the casual installer], | |
4342 | maintainer_mode=$enableval, | |
4343 | maintainer_mode=no) | |
4344 | ||
4345 | AC_MSG_RESULT($maintainer_mode) | |
4346 | ||
4347 | if test "$maintainer_mode" = "yes"; then | |
4348 | MAINT='' | |
4349 | else | |
4350 | MAINT='#' | |
4351 | fi | |
4352 | AC_SUBST(MAINT)dnl | |
4353 | ||
4354 | # -------------- | |
4355 | # Language hooks | |
4356 | # -------------- | |
4357 | ||
4358 | # Make empty files to contain the specs and options for each language. | |
4359 | # Then add #include lines to for a compiler that has specs and/or options. | |
4360 | ||
4361 | subdirs= | |
4362 | lang_opt_files= | |
4363 | lang_specs_files= | |
4364 | lang_tree_files= | |
4365 | # These (without "all_") are set in each config-lang.in. | |
4366 | # `language' must be a single word so is spelled singularly. | |
4367 | all_languages= | |
4368 | all_compilers= | |
4369 | all_outputs='Makefile' | |
4370 | # List of language makefile fragments. | |
4371 | all_lang_makefrags= | |
4372 | # Additional files for gengtype | |
4373 | all_gtfiles="$target_gtfiles" | |
4374 | ||
4375 | # These are the languages that are set in --enable-languages, | |
4376 | # and are available in the GCC tree. | |
4377 | all_selected_languages= | |
4378 | ||
4379 | # Add the language fragments. | |
4380 | # Languages are added via two mechanisms. Some information must be | |
4381 | # recorded in makefile variables, these are defined in config-lang.in. | |
4382 | # We accumulate them and plug them into the main Makefile. | |
4383 | # The other mechanism is a set of hooks for each of the main targets | |
4384 | # like `clean', `install', etc. | |
4385 | ||
4386 | language_hooks="Make-hooks" | |
4387 | ||
4388 | for lang in ${srcdir}/*/config-lang.in | |
4389 | do | |
4390 | changequote(,)dnl | |
4391 | test "$lang" = "${srcdir}/*/config-lang.in" && continue | |
4392 | ||
4393 | lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` | |
4394 | if test "x$lang_alias" = x | |
4395 | then | |
4396 | echo "$lang doesn't set \$language." 1>&2 | |
4397 | exit 1 | |
4398 | fi | |
4399 | subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" | |
4400 | subdirs="$subdirs $subdir" | |
4401 | ||
4402 | # $gcc_subdir is where the gcc integration files are to be found | |
4403 | # for a language, both for internal compiler purposes (compiler | |
4404 | # sources implementing front-end to GCC tree converters), and for | |
4405 | # build infrastructure purposes (Make-lang.in, etc.) | |
4406 | # | |
4407 | # This will be <subdir> (relative to $srcdir) if a line like | |
4408 | # gcc_subdir="<subdir>" or gcc_subdir=<subdir> | |
4409 | # is found in <langdir>/config-lang.in, and will remain <langdir> | |
4410 | # otherwise. | |
4411 | # | |
4412 | # Except for the language alias (fetched above), the regular | |
4413 | # "config-lang.in" contents are always retrieved from $gcc_subdir, | |
4414 | # so a <langdir>/config-lang.in setting gcc_subdir typically sets | |
4415 | # only this and the language alias. | |
4416 | ||
4417 | gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang` | |
4418 | if [ "$gcc_subdir" = "" ]; then | |
4419 | gcc_subdir="$subdir" | |
4420 | fi | |
4421 | ||
4422 | case ",$enable_languages," in | |
4423 | *,$lang_alias,*) | |
4424 | all_selected_languages="$all_selected_languages $lang_alias" | |
4425 | if test -f $srcdir/$gcc_subdir/lang-specs.h; then | |
4426 | lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h" | |
4427 | fi | |
4428 | ;; | |
4429 | esac | |
4430 | changequote([,])dnl | |
4431 | ||
4432 | language= | |
4433 | boot_language= | |
4434 | compilers= | |
4435 | outputs= | |
4436 | gtfiles= | |
4437 | subdir_requires= | |
4438 | . ${srcdir}/$gcc_subdir/config-lang.in | |
4439 | if test "x$language" = x | |
4440 | then | |
4441 | echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2 | |
4442 | exit 1 | |
4443 | fi | |
4444 | ||
4445 | ok=: | |
4446 | case ",$enable_languages," in | |
4447 | *,$lang_alias,*) ;; | |
4448 | *) | |
4449 | for i in $subdir_requires; do | |
4450 | test -f "${srcdir}/$i/config-lang.in" && continue | |
4451 | ok=false | |
4452 | break | |
4453 | done | |
4454 | ;; | |
4455 | esac | |
4456 | $ok || continue | |
4457 | ||
4458 | all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in" | |
4459 | if test -f $srcdir/$gcc_subdir/lang.opt; then | |
4460 | lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt" | |
4461 | fi | |
4462 | if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then | |
4463 | lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def" | |
4464 | fi | |
4465 | all_languages="$all_languages $language" | |
4466 | all_compilers="$all_compilers $compilers" | |
4467 | all_outputs="$all_outputs $outputs" | |
4468 | all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" | |
4469 | case ",$enable_languages," in | |
4470 | *,lto,*) | |
4471 | AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) | |
4472 | enable_lto=yes | |
4473 | AC_SUBST(enable_lto) | |
4474 | ;; | |
4475 | *) ;; | |
4476 | esac | |
4477 | done | |
4478 | ||
4479 | # Pick up gtfiles for c | |
4480 | gtfiles= | |
4481 | . ${srcdir}/c-config-lang.in | |
4482 | all_gtfiles="$all_gtfiles [[c]] $gtfiles" | |
4483 | ||
4484 | check_languages= | |
4485 | for language in $all_selected_languages | |
4486 | do | |
4487 | check_languages="$check_languages check-$language" | |
4488 | done | |
4489 | ||
4490 | # We link each language in with a set of hooks, reached indirectly via | |
4491 | # lang.${target}. Only do so for selected languages. | |
4492 | ||
4493 | rm -f Make-hooks | |
4494 | touch Make-hooks | |
4495 | target_list="all.cross start.encap rest.encap tags \ | |
4496 | install-common install-man install-info install-pdf install-html dvi \ | |
4497 | pdf html uninstall info man srcextra srcman srcinfo \ | |
4498 | mostlyclean clean distclean maintainer-clean install-plugin" | |
4499 | ||
4500 | for t in $target_list | |
4501 | do | |
4502 | x= | |
4503 | for lang in $all_selected_languages | |
4504 | do | |
4505 | x="$x $lang.$t" | |
4506 | done | |
4507 | echo "lang.$t: $x" >> Make-hooks | |
4508 | done | |
4509 | ||
4510 | # -------- | |
4511 | # UNSORTED | |
4512 | # -------- | |
4513 | ||
4514 | # Create .gdbinit. | |
4515 | ||
4516 | echo "dir ." > .gdbinit | |
4517 | echo "dir ${srcdir}" >> .gdbinit | |
4518 | if test x$gdb_needs_out_file_path = xyes | |
4519 | then | |
4520 | echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit | |
4521 | fi | |
4522 | if test "x$subdirs" != x; then | |
4523 | for s in $subdirs | |
4524 | do | |
4525 | echo "dir ${srcdir}/$s" >> .gdbinit | |
4526 | done | |
4527 | fi | |
4528 | echo "source ${srcdir}/gdbinit.in" >> .gdbinit | |
4529 | ||
4530 | gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)' | |
4531 | AC_SUBST(gcc_tooldir) | |
4532 | AC_SUBST(dollar) | |
4533 | ||
4534 | # Find a directory in which to install a shared libgcc. | |
4535 | ||
4536 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
4537 | [ --enable-version-specific-runtime-libs | |
4538 | specify that runtime libraries should be | |
4539 | installed in a compiler-specific directory]) | |
4540 | ||
4541 | AC_ARG_WITH(slibdir, | |
4542 | [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]], | |
4543 | slibdir="$with_slibdir", | |
4544 | if test "${enable_version_specific_runtime_libs+set}" = set; then | |
4545 | slibdir='$(libsubdir)' | |
4546 | elif test "$host" != "$target"; then | |
4547 | slibdir='$(build_tooldir)/lib' | |
4548 | else | |
4549 | slibdir='$(libdir)' | |
4550 | fi) | |
4551 | AC_SUBST(slibdir) | |
4552 | ||
4553 | # Substitute configuration variables | |
4554 | AC_SUBST(subdirs) | |
4555 | AC_SUBST(srcdir) | |
4556 | AC_SUBST(all_compilers) | |
4557 | AC_SUBST(all_gtfiles) | |
4558 | AC_SUBST(all_lang_makefrags) | |
4559 | AC_SUBST(all_languages) | |
4560 | AC_SUBST(all_selected_languages) | |
4561 | AC_SUBST(build_exeext) | |
4562 | AC_SUBST(build_install_headers_dir) | |
4563 | AC_SUBST(build_xm_file_list) | |
4564 | AC_SUBST(build_xm_include_list) | |
4565 | AC_SUBST(build_xm_defines) | |
4566 | AC_SUBST(build_file_translate) | |
4567 | AC_SUBST(check_languages) | |
4568 | AC_SUBST(cpp_install_dir) | |
4569 | AC_SUBST(xmake_file) | |
4570 | AC_SUBST(tmake_file) | |
4571 | AC_SUBST(TM_ENDIAN_CONFIG) | |
4572 | AC_SUBST(TM_MULTILIB_CONFIG) | |
4573 | AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) | |
4574 | AC_SUBST(extra_gcc_objs) | |
4575 | AC_SUBST(user_headers_inc_next_pre) | |
4576 | AC_SUBST(user_headers_inc_next_post) | |
4577 | AC_SUBST(extra_headers_list) | |
4578 | AC_SUBST(extra_objs) | |
4579 | AC_SUBST(extra_parts) | |
4580 | AC_SUBST(extra_passes) | |
4581 | AC_SUBST(extra_programs) | |
4582 | AC_SUBST(float_h_file) | |
4583 | AC_SUBST(gcc_config_arguments) | |
4584 | AC_SUBST(gcc_gxx_include_dir) | |
4585 | AC_SUBST(host_exeext) | |
4586 | AC_SUBST(host_xm_file_list) | |
4587 | AC_SUBST(host_xm_include_list) | |
4588 | AC_SUBST(host_xm_defines) | |
4589 | AC_SUBST(out_host_hook_obj) | |
4590 | AC_SUBST(install) | |
4591 | AC_SUBST(lang_opt_files) | |
4592 | AC_SUBST(lang_specs_files) | |
4593 | AC_SUBST(lang_tree_files) | |
4594 | AC_SUBST(local_prefix) | |
4595 | AC_SUBST(md_file) | |
4596 | AC_SUBST(objc_boehm_gc) | |
4597 | AC_SUBST(out_file) | |
4598 | AC_SUBST(out_object_file) | |
4599 | AC_SUBST(thread_file) | |
4600 | AC_SUBST(tm_file_list) | |
4601 | AC_SUBST(tm_include_list) | |
4602 | AC_SUBST(tm_defines) | |
4603 | AC_SUBST(tm_p_file_list) | |
4604 | AC_SUBST(tm_p_include_list) | |
4605 | AC_SUBST(xm_file_list) | |
4606 | AC_SUBST(xm_include_list) | |
4607 | AC_SUBST(xm_defines) | |
4608 | AC_SUBST(use_gcc_stdint) | |
4609 | AC_SUBST(c_target_objs) | |
4610 | AC_SUBST(cxx_target_objs) | |
4611 | AC_SUBST(fortran_target_objs) | |
4612 | AC_SUBST(target_cpu_default) | |
4613 | ||
4614 | AC_SUBST_FILE(language_hooks) | |
4615 | ||
4616 | # Echo link setup. | |
4617 | if test x${build} = x${host} ; then | |
4618 | if test x${host} = x${target} ; then | |
4619 | echo "Links are now set up to build a native compiler for ${target}." 1>&2 | |
4620 | else | |
4621 | echo "Links are now set up to build a cross-compiler" 1>&2 | |
4622 | echo " from ${host} to ${target}." 1>&2 | |
4623 | fi | |
4624 | else | |
4625 | if test x${host} = x${target} ; then | |
4626 | echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 | |
4627 | echo " for ${target}." 1>&2 | |
4628 | else | |
4629 | echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 | |
4630 | echo " from ${host} to ${target}." 1>&2 | |
4631 | fi | |
4632 | fi | |
4633 | ||
4634 | AC_ARG_VAR(GMPLIBS,[How to link GMP]) | |
4635 | AC_ARG_VAR(GMPINC,[How to find GMP include files]) | |
4636 | ||
4637 | AC_ARG_VAR(PPLLIBS,[How to link PPL]) | |
4638 | AC_ARG_VAR(PPLINC,[How to find PPL include files]) | |
4639 | ||
4640 | AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG]) | |
4641 | AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files]) | |
4642 | if test "x${CLOOGLIBS}" != "x" ; then | |
4643 | AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.]) | |
4644 | fi | |
4645 | ||
4646 | # Check for plugin support | |
4647 | AC_ARG_ENABLE(plugin, | |
4648 | [ --enable-plugin enable plugin support], | |
4649 | enable_plugin=$enableval, | |
4650 | enable_plugin=yes; default_plugin=yes) | |
4651 | ||
4652 | pluginlibs= | |
4653 | ||
4654 | case "${host}" in | |
4655 | *-*-darwin*) | |
4656 | if test x$build = x$host; then | |
4657 | export_sym_check="nm${exeext} -g" | |
4658 | elif test x$host = x$target; then | |
4659 | export_sym_check="$gcc_cv_nm -g" | |
4660 | else | |
4661 | export_sym_check= | |
4662 | fi | |
4663 | ;; | |
4664 | *) | |
4665 | if test x$build = x$host; then | |
4666 | export_sym_check="objdump${exeext} -T" | |
4667 | elif test x$host = x$target; then | |
4668 | export_sym_check="$gcc_cv_objdump -T" | |
4669 | else | |
4670 | export_sym_check= | |
4671 | fi | |
4672 | ;; | |
4673 | esac | |
4674 | ||
4675 | if test x"$enable_plugin" = x"yes"; then | |
4676 | ||
4677 | AC_MSG_CHECKING([for exported symbols]) | |
4678 | if test "x$export_sym_check" != x; then | |
4679 | echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c | |
4680 | ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1 | |
4681 | if $export_sym_check conftest | grep foobar > /dev/null; then | |
4682 | : # No need to use a flag | |
4683 | AC_MSG_RESULT([yes]) | |
4684 | else | |
4685 | AC_MSG_RESULT([yes]) | |
4686 | AC_MSG_CHECKING([for -rdynamic]) | |
4687 | ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1 | |
4688 | if $export_sym_check conftest | grep foobar > /dev/null; then | |
4689 | plugin_rdynamic=yes | |
4690 | pluginlibs="-rdynamic" | |
4691 | else | |
4692 | plugin_rdynamic=no | |
4693 | enable_plugin=no | |
4694 | fi | |
4695 | AC_MSG_RESULT([$plugin_rdynamic]) | |
4696 | fi | |
4697 | else | |
4698 | AC_MSG_RESULT([unable to check]) | |
4699 | fi | |
4700 | ||
4701 | # Check -ldl | |
4702 | saved_LIBS="$LIBS" | |
4703 | AC_SEARCH_LIBS([dlopen], [dl]) | |
4704 | if test x"$ac_cv_search_dlopen" = x"-ldl"; then | |
4705 | pluginlibs="$pluginlibs -ldl" | |
4706 | fi | |
4707 | LIBS="$saved_LIBS" | |
4708 | ||
4709 | # Check that we can build shared objects with -fPIC -shared | |
4710 | saved_LDFLAGS="$LDFLAGS" | |
4711 | saved_CFLAGS="$CFLAGS" | |
4712 | case "${host}" in | |
4713 | *-*-darwin*) | |
4714 | CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g` | |
4715 | CFLAGS="$CFLAGS -fPIC" | |
4716 | LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup" | |
4717 | ;; | |
4718 | *) | |
4719 | CFLAGS="$CFLAGS -fPIC" | |
4720 | LDFLAGS="$LDFLAGS -fPIC -shared" | |
4721 | ;; | |
4722 | esac | |
4723 | AC_MSG_CHECKING([for -fPIC -shared]) | |
4724 | AC_TRY_LINK( | |
4725 | [extern int X;],[return X == 0;], | |
4726 | [AC_MSG_RESULT([yes]); have_pic_shared=yes], | |
4727 | [AC_MSG_RESULT([no]); have_pic_shared=no]) | |
4728 | if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then | |
4729 | pluginlibs= | |
4730 | enable_plugin=no | |
4731 | fi | |
4732 | LDFLAGS="$saved_LDFLAGS" | |
4733 | CFLAGS="$saved_CFLAGS" | |
4734 | ||
4735 | # If plugin support had been requested but not available, fail. | |
4736 | if test x"$enable_plugin" = x"no" ; then | |
4737 | if test x"$default_plugin" != x"yes"; then | |
4738 | AC_MSG_ERROR([ | |
4739 | Building GCC with plugin support requires a host that supports | |
4740 | -fPIC, -shared, -ldl and -rdynamic.]) | |
4741 | fi | |
4742 | fi | |
4743 | fi | |
4744 | ||
4745 | AC_SUBST(pluginlibs) | |
4746 | AC_SUBST(enable_plugin) | |
4747 | if test x"$enable_plugin" = x"yes"; then | |
4748 | AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) | |
4749 | fi | |
4750 | ||
4751 | # Configure the subdirectories | |
4752 | # AC_CONFIG_SUBDIRS($subdirs) | |
4753 | ||
4754 | # Create the Makefile | |
4755 | # and configure language subdirectories | |
4756 | AC_CONFIG_FILES($all_outputs) | |
4757 | ||
4758 | AC_CONFIG_COMMANDS([default], | |
4759 | [ | |
4760 | case ${CONFIG_HEADERS} in | |
4761 | *auto-host.h:config.in*) | |
4762 | echo > cstamp-h ;; | |
4763 | esac | |
4764 | # Make sure all the subdirs exist. | |
4765 | for d in $subdirs doc build c-family | |
4766 | do | |
4767 | test -d $d || mkdir $d | |
4768 | done | |
4769 | ], | |
4770 | [subdirs='$subdirs']) | |
4771 | AC_OUTPUT |