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1 | # configure.ac for GCC | |
2 | # Process this file with autoconf to generate a configuration script. | |
3 | ||
4 | # Copyright (C) 1997-2020 Free Software Foundation, Inc. | |
5 | ||
6 | #This file is part of GCC. | |
7 | ||
8 | #GCC is free software; you can redistribute it and/or modify it under | |
9 | #the terms of the GNU General Public License as published by the Free | |
10 | #Software Foundation; either version 3, or (at your option) any later | |
11 | #version. | |
12 | ||
13 | #GCC is distributed in the hope that it will be useful, but WITHOUT | |
14 | #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | #for more details. | |
17 | ||
18 | #You should have received a copy of the GNU General Public License | |
19 | #along with GCC; see the file COPYING3. If not see | |
20 | #<http://www.gnu.org/licenses/>. | |
21 | ||
22 | # -------------------------------- | |
23 | # Initialization and sanity checks | |
24 | # -------------------------------- | |
25 | ||
26 | AC_INIT | |
27 | AC_CONFIG_SRCDIR(tree.c) | |
28 | AC_CONFIG_HEADER(auto-host.h:config.in) | |
29 | ||
30 | gcc_version=`cat $srcdir/BASE-VER` | |
31 | ||
32 | # Determine the host, build, and target systems | |
33 | AC_CANONICAL_BUILD | |
34 | AC_CANONICAL_HOST | |
35 | AC_CANONICAL_TARGET | |
36 | ||
37 | # Determine the noncanonical host name, for Ada. | |
38 | ACX_NONCANONICAL_HOST | |
39 | ||
40 | # Determine the noncanonical target name, for directory use. | |
41 | ACX_NONCANONICAL_TARGET | |
42 | ||
43 | # Used for constructing correct paths for offload compilers. | |
44 | real_target_noncanonical=${target_noncanonical} | |
45 | accel_dir_suffix= | |
46 | ||
47 | # Determine the target- and build-specific subdirectories | |
48 | GCC_TOPLEV_SUBDIRS | |
49 | ||
50 | # Set program_transform_name | |
51 | AC_ARG_PROGRAM | |
52 | ||
53 | # Check for bogus environment variables. | |
54 | # Test if LIBRARY_PATH contains the notation for the current directory | |
55 | # since this would lead to problems installing/building glibc. | |
56 | # LIBRARY_PATH contains the current directory if one of the following | |
57 | # is true: | |
58 | # - one of the terminals (":" and ";") is the first or last sign | |
59 | # - two terminals occur directly after each other | |
60 | # - the path contains an element with a dot in it | |
61 | AC_MSG_CHECKING(LIBRARY_PATH variable) | |
62 | changequote(,)dnl | |
63 | case ${LIBRARY_PATH} in | |
64 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
65 | library_path_setting="contains current directory" | |
66 | ;; | |
67 | *) | |
68 | library_path_setting="ok" | |
69 | ;; | |
70 | esac | |
71 | changequote([,])dnl | |
72 | AC_MSG_RESULT($library_path_setting) | |
73 | if test "$library_path_setting" != "ok"; then | |
74 | AC_MSG_ERROR([ | |
75 | *** LIBRARY_PATH shouldn't contain the current directory when | |
76 | *** building gcc. Please change the environment variable | |
77 | *** and run configure again.]) | |
78 | fi | |
79 | ||
80 | # Test if GCC_EXEC_PREFIX contains the notation for the current directory | |
81 | # since this would lead to problems installing/building glibc. | |
82 | # GCC_EXEC_PREFIX contains the current directory if one of the following | |
83 | # is true: | |
84 | # - one of the terminals (":" and ";") is the first or last sign | |
85 | # - two terminals occur directly after each other | |
86 | # - the path contains an element with a dot in it | |
87 | AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) | |
88 | changequote(,)dnl | |
89 | case ${GCC_EXEC_PREFIX} in | |
90 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
91 | gcc_exec_prefix_setting="contains current directory" | |
92 | ;; | |
93 | *) | |
94 | gcc_exec_prefix_setting="ok" | |
95 | ;; | |
96 | esac | |
97 | changequote([,])dnl | |
98 | AC_MSG_RESULT($gcc_exec_prefix_setting) | |
99 | if test "$gcc_exec_prefix_setting" != "ok"; then | |
100 | AC_MSG_ERROR([ | |
101 | *** GCC_EXEC_PREFIX shouldn't contain the current directory when | |
102 | *** building gcc. Please change the environment variable | |
103 | *** and run configure again.]) | |
104 | fi | |
105 | ||
106 | # ----------- | |
107 | # Directories | |
108 | # ----------- | |
109 | ||
110 | # Specify the local prefix | |
111 | local_prefix= | |
112 | AC_ARG_WITH(local-prefix, | |
113 | [AS_HELP_STRING([--with-local-prefix=DIR], | |
114 | [specifies directory to put local include])], | |
115 | [case "${withval}" in | |
116 | yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; | |
117 | no) ;; | |
118 | *) local_prefix=$with_local_prefix ;; | |
119 | esac]) | |
120 | ||
121 | # Default local prefix if it is empty | |
122 | if test x$local_prefix = x; then | |
123 | local_prefix=/usr/local | |
124 | fi | |
125 | ||
126 | AC_ARG_WITH([native-system-header-dir], | |
127 | [ --with-native-system-header-dir=dir | |
128 | use dir as the directory to look for standard | |
129 | system header files in. Defaults to /usr/include.], | |
130 | [ | |
131 | case ${with_native_system_header_dir} in | |
132 | yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;; | |
133 | /* | [[A-Za-z]]:[[\\/]]*) ;; | |
134 | *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;; | |
135 | esac | |
136 | configured_native_system_header_dir="${withval}" | |
137 | ], [configured_native_system_header_dir=]) | |
138 | ||
139 | AC_ARG_WITH(build-sysroot, | |
140 | [AS_HELP_STRING([--with-build-sysroot=sysroot], | |
141 | [use sysroot as the system root during the build])], | |
142 | [if test x"$withval" != x ; then | |
143 | SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval" | |
144 | fi], | |
145 | [SYSROOT_CFLAGS_FOR_TARGET=]) | |
146 | AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET) | |
147 | ||
148 | if test "x$prefix" = xNONE; then | |
149 | test_prefix=/usr/local | |
150 | else | |
151 | test_prefix=$prefix | |
152 | fi | |
153 | if test "x$exec_prefix" = xNONE; then | |
154 | test_exec_prefix=$test_prefix | |
155 | else | |
156 | test_exec_prefix=$exec_prefix | |
157 | fi | |
158 | ||
159 | AC_ARG_WITH(sysroot, | |
160 | [AS_HELP_STRING([[--with-sysroot[=DIR]]], | |
161 | [search for usr/lib, usr/include, et al, within DIR])], | |
162 | [ | |
163 | case ${with_sysroot} in | |
164 | /) ;; | |
165 | */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;; | |
166 | esac | |
167 | case ${with_sysroot} in | |
168 | yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; | |
169 | *) TARGET_SYSTEM_ROOT=$with_sysroot ;; | |
170 | esac | |
171 | ||
172 | TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' | |
173 | CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' | |
174 | ||
175 | case ${TARGET_SYSTEM_ROOT} in | |
176 | "${test_prefix}"|"${test_prefix}/"*|\ | |
177 | "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ | |
178 | '${prefix}'|'${prefix}/'*|\ | |
179 | '${exec_prefix}'|'${exec_prefix}/'*) | |
180 | t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" | |
181 | TARGET_SYSTEM_ROOT_DEFINE="$t" | |
182 | ;; | |
183 | esac | |
184 | ], [ | |
185 | TARGET_SYSTEM_ROOT= | |
186 | TARGET_SYSTEM_ROOT_DEFINE= | |
187 | CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' | |
188 | ]) | |
189 | AC_SUBST(TARGET_SYSTEM_ROOT) | |
190 | AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) | |
191 | AC_SUBST(CROSS_SYSTEM_HEADER_DIR) | |
192 | ||
193 | # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only | |
194 | # passed in by the toplevel make and thus we'd get different behavior | |
195 | # depending on where we built the sources. | |
196 | gcc_gxx_include_dir= | |
197 | # Specify the g++ header file directory | |
198 | AC_ARG_WITH(gxx-include-dir, | |
199 | [AS_HELP_STRING([--with-gxx-include-dir=DIR], | |
200 | [specifies directory to put g++ header files])], | |
201 | [case "${withval}" in | |
202 | yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; | |
203 | no) ;; | |
204 | *) gcc_gxx_include_dir=$with_gxx_include_dir ;; | |
205 | esac]) | |
206 | ||
207 | # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate | |
208 | # the former in the latter and, upon success, compute gcc_gxx_include_dir as | |
209 | # relative to the sysroot. | |
210 | gcc_gxx_include_dir_add_sysroot=0 | |
211 | ||
212 | # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. | |
213 | if test x${gcc_gxx_include_dir} = x; then | |
214 | if test x${enable_version_specific_runtime_libs} = xyes; then | |
215 | gcc_gxx_include_dir='${libsubdir}/include/c++' | |
216 | else | |
217 | libstdcxx_incdir='include/c++/$(version)' | |
218 | if test x$host != x$target; then | |
219 | libstdcxx_incdir="$target_alias/$libstdcxx_incdir" | |
220 | fi | |
221 | gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir" | |
222 | fi | |
223 | elif test "${with_sysroot+set}" = set; then | |
224 | gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'` | |
225 | if test "${gcc_gxx_without_sysroot}"; then | |
226 | gcc_gxx_include_dir="${gcc_gxx_without_sysroot}" | |
227 | gcc_gxx_include_dir_add_sysroot=1 | |
228 | fi | |
229 | fi | |
230 | ||
231 | AC_ARG_WITH(cpp_install_dir, | |
232 | [AC_HELP_STRING([--with-cpp-install-dir=DIR], | |
233 | [install the user visible C preprocessor in DIR | |
234 | (relative to PREFIX) as well as PREFIX/bin])], | |
235 | [if test x$withval = xyes; then | |
236 | AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) | |
237 | elif test x$withval != xno; then | |
238 | cpp_install_dir=$withval | |
239 | fi]) | |
240 | ||
241 | # We would like to our source tree to be readonly. However when releases or | |
242 | # pre-releases are generated, the flex/bison generated files as well as the | |
243 | # various formats of manuals need to be included along with the rest of the | |
244 | # sources. Therefore we have --enable-generated-files-in-srcdir to do | |
245 | # just that. | |
246 | ||
247 | AC_MSG_CHECKING([whether to place generated files in the source directory]) | |
248 | dnl generated-files-in-srcdir is disabled by default | |
249 | AC_ARG_ENABLE(generated-files-in-srcdir, | |
250 | [AS_HELP_STRING([--enable-generated-files-in-srcdir], | |
251 | [put copies of generated files in source dir | |
252 | intended for creating source tarballs for users | |
253 | without texinfo bison or flex])], | |
254 | generated_files_in_srcdir=$enableval, | |
255 | generated_files_in_srcdir=no) | |
256 | ||
257 | AC_MSG_RESULT($generated_files_in_srcdir) | |
258 | ||
259 | if test "$generated_files_in_srcdir" = "yes"; then | |
260 | GENINSRC='' | |
261 | else | |
262 | GENINSRC='#' | |
263 | fi | |
264 | AC_SUBST(GENINSRC) | |
265 | ||
266 | # ------------------- | |
267 | # Find default linker | |
268 | # ------------------- | |
269 | ||
270 | # With GNU ld | |
271 | AC_ARG_WITH(gnu-ld, | |
272 | [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])], | |
273 | gnu_ld_flag="$with_gnu_ld", | |
274 | gnu_ld_flag=no) | |
275 | ||
276 | case $target in | |
277 | *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker. | |
278 | *) ld64_flag=no;; | |
279 | esac | |
280 | ||
281 | # With pre-defined ld | |
282 | AC_ARG_WITH(ld, | |
283 | [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])], | |
284 | DEFAULT_LINKER="$with_ld") | |
285 | if test x"${DEFAULT_LINKER+set}" = x"set"; then | |
286 | if test ! -x "$DEFAULT_LINKER"; then | |
287 | AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) | |
288 | elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then | |
289 | gnu_ld_flag=yes | |
290 | elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then | |
291 | ld64_flag=yes | |
292 | fi | |
293 | AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", | |
294 | [Define to enable the use of a default linker.]) | |
295 | fi | |
296 | ||
297 | AC_MSG_CHECKING([whether a default linker was specified]) | |
298 | if test x"${DEFAULT_LINKER+set}" = x"set"; then | |
299 | if test x"$gnu_ld_flag" = x"no"; then | |
300 | AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) | |
301 | else | |
302 | AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) | |
303 | fi | |
304 | else | |
305 | AC_MSG_RESULT(no) | |
306 | fi | |
307 | ||
308 | # With demangler in GNU ld | |
309 | AC_ARG_WITH(demangler-in-ld, | |
310 | [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])], | |
311 | demangler_in_ld="$with_demangler_in_ld", | |
312 | demangler_in_ld=yes) | |
313 | ||
314 | # ---------------------- | |
315 | # Find default assembler | |
316 | # ---------------------- | |
317 | ||
318 | # With GNU as | |
319 | AC_ARG_WITH(gnu-as, | |
320 | [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])], | |
321 | gas_flag="$with_gnu_as", | |
322 | gas_flag=no) | |
323 | ||
324 | AC_ARG_WITH(as, | |
325 | [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])], | |
326 | DEFAULT_ASSEMBLER="$with_as") | |
327 | if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then | |
328 | if test ! -x "$DEFAULT_ASSEMBLER"; then | |
329 | AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) | |
330 | elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then | |
331 | gas_flag=yes | |
332 | fi | |
333 | AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", | |
334 | [Define to enable the use of a default assembler.]) | |
335 | fi | |
336 | ||
337 | AC_MSG_CHECKING([whether a default assembler was specified]) | |
338 | if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then | |
339 | if test x"$gas_flag" = x"no"; then | |
340 | AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) | |
341 | else | |
342 | AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) | |
343 | fi | |
344 | else | |
345 | AC_MSG_RESULT(no) | |
346 | fi | |
347 | ||
348 | # --------------- | |
349 | # Find C compiler | |
350 | # --------------- | |
351 | ||
352 | # If a non-executable a.out is present (e.g. created by GNU as above even if | |
353 | # invoked with -v only), the IRIX 6 native ld just overwrites the existing | |
354 | # file, even when creating an executable, so an execution test fails. | |
355 | # Remove possible default executable files to avoid this. | |
356 | # | |
357 | # FIXME: This really belongs into AC_PROG_CC and can be removed once | |
358 | # Autoconf includes it. | |
359 | rm -f a.out a.exe b.out | |
360 | ||
361 | # Find the native compiler | |
362 | AC_PROG_CC | |
363 | AC_PROG_CXX | |
364 | ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat]) | |
365 | ||
366 | # Do configure tests with the C++ compiler, since that's what we build with. | |
367 | AC_LANG(C++) | |
368 | ||
369 | # Remove the -O2: for historical reasons, unless bootstrapping we prefer | |
370 | # optimizations to be activated explicitly by the toplevel. | |
371 | case "$CC" in | |
372 | */prev-gcc/xgcc*) ;; | |
373 | *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` | |
374 | CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;; | |
375 | esac | |
376 | AC_SUBST(CFLAGS) | |
377 | AC_SUBST(CXXFLAGS) | |
378 | ||
379 | # Determine PICFLAG for target gnatlib. | |
380 | GCC_PICFLAG_FOR_TARGET | |
381 | AC_SUBST(PICFLAG_FOR_TARGET) | |
382 | ||
383 | # ------------------------- | |
384 | # Check C compiler features | |
385 | # ------------------------- | |
386 | ||
387 | AC_USE_SYSTEM_EXTENSIONS | |
388 | AC_PROG_CPP | |
389 | AC_C_INLINE | |
390 | ||
391 | AC_SYS_LARGEFILE | |
392 | ||
393 | # sizeof(char) is 1 by definition. | |
394 | AC_CHECK_SIZEOF(void *) | |
395 | AC_CHECK_SIZEOF(short) | |
396 | AC_CHECK_SIZEOF(int) | |
397 | AC_CHECK_SIZEOF(long) | |
398 | AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) | |
399 | GCC_STDINT_TYPES | |
400 | if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then | |
401 | AC_MSG_ERROR([uint64_t or int64_t not found]) | |
402 | fi | |
403 | ||
404 | # check what underlying integer type int64_t uses | |
405 | AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [ | |
406 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
407 | #ifdef HAVE_STDINT_H | |
408 | #include <stdint.h> | |
409 | #endif | |
410 | template <typename T> struct X { }; | |
411 | template <> | |
412 | struct X<long> { typedef long t; }; | |
413 | ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])]) | |
414 | if test "$ac_cv_int64_t_type" = "long"; then | |
415 | AC_DEFINE(INT64_T_IS_LONG, 1, | |
416 | [Define if int64_t uses long as underlying type.]) | |
417 | else | |
418 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
419 | #ifdef HAVE_STDINT_H | |
420 | #include <stdint.h> | |
421 | #endif | |
422 | template <typename T> struct X { }; | |
423 | template <> | |
424 | struct X<long long> { typedef long long t; }; | |
425 | ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])]) | |
426 | fi | |
427 | ||
428 | AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [ | |
429 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
430 | #include <utility> | |
431 | ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])]) | |
432 | if test $ac_cv_std_swap_in_utility = yes; then | |
433 | AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1, | |
434 | [Define if <utility> defines std::swap.]) | |
435 | fi | |
436 | ||
437 | # Check whether compiler is affected by placement new aliasing bug (PR 29286). | |
438 | # If the host compiler is affected by the bug, and we build with optimization | |
439 | # enabled (which happens e.g. when cross-compiling), the pool allocator may | |
440 | # get miscompiled. Use -fno-strict-aliasing to work around this problem. | |
441 | # Since there is no reliable feature check for the presence of this bug, | |
442 | # we simply use a GCC version number check. (This should never trigger for | |
443 | # stages 2 or 3 of a native bootstrap.) | |
444 | aliasing_flags= | |
445 | if test "$GCC" = yes; then | |
446 | saved_CXXFLAGS="$CXXFLAGS" | |
447 | ||
448 | # The following test compilation will succeed if and only if $CXX accepts | |
449 | # -fno-strict-aliasing *and* is older than GCC 4.3. | |
450 | CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" | |
451 | AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug]) | |
452 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([ | |
453 | #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) | |
454 | #error compiler not affected by placement new aliasing bug | |
455 | #endif | |
456 | ])], | |
457 | [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'], | |
458 | [AC_MSG_RESULT([no])]) | |
459 | ||
460 | CXXFLAGS="$saved_CXXFLAGS" | |
461 | fi | |
462 | AC_SUBST(aliasing_flags) | |
463 | ||
464 | ||
465 | ||
466 | # --------------------- | |
467 | # Warnings and checking | |
468 | # --------------------- | |
469 | ||
470 | # Check $CC warning features (if it's GCC). | |
471 | # We want to use -pedantic, but we don't want warnings about | |
472 | # * 'long long' | |
473 | # * variadic macros | |
474 | # * overlong strings | |
475 | # * C++11 narrowing conversions in { } | |
476 | # So, we only use -pedantic if we can disable those warnings. | |
477 | ||
478 | # In stage 1, disable -Wformat warnings from old GCCs about new % codes | |
479 | AC_ARG_ENABLE(build-format-warnings, | |
480 | AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]), | |
481 | [],[enable_build_format_warnings=yes]) | |
482 | AS_IF([test $enable_build_format_warnings = no], | |
483 | [wf_opt=-Wno-format],[wf_opt=]) | |
484 | ACX_PROG_CXX_WARNING_OPTS( | |
485 | m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ], | |
486 | [-Wcast-qual -Wno-error=format-diag $wf_opt])), | |
487 | [loose_warn]) | |
488 | ACX_PROG_CC_WARNING_OPTS( | |
489 | m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ], | |
490 | [-Wno-error=format-diag])), [c_loose_warn]) | |
491 | ACX_PROG_CXX_WARNING_OPTS( | |
492 | m4_quote(m4_do([-Wmissing-format-attribute ], | |
493 | [-Woverloaded-virtual])), [strict_warn]) | |
494 | ACX_PROG_CC_WARNING_OPTS( | |
495 | m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) | |
496 | ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC( | |
497 | m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], | |
498 | [-Wno-overlength-strings])), [strict_warn]) | |
499 | ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn]) | |
500 | ||
501 | # The above macros do nothing if the compiler is not GCC. However, the | |
502 | # Makefile has more goo to add other flags, so these variables are used | |
503 | # to enable warnings only for GCC. | |
504 | warn_cflags= | |
505 | warn_cxxflags= | |
506 | if test "x$GCC" = "xyes"; then | |
507 | warn_cflags='$(GCC_WARN_CFLAGS)' | |
508 | warn_cxxflags='$(GCC_WARN_CXXFLAGS)' | |
509 | fi | |
510 | AC_SUBST(warn_cflags) | |
511 | AC_SUBST(warn_cxxflags) | |
512 | ||
513 | # Disable exceptions and RTTI if building with g++ | |
514 | ACX_PROG_CC_WARNING_OPTS( | |
515 | m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])), | |
516 | [noexception_flags]) | |
517 | ||
518 | # Enable expensive internal checks | |
519 | is_release= | |
520 | if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then | |
521 | is_release=yes | |
522 | fi | |
523 | ||
524 | AC_ARG_ENABLE(checking, | |
525 | [AS_HELP_STRING([[--enable-checking[=LIST]]], | |
526 | [enable expensive run-time checks. With LIST, | |
527 | enable only specific categories of checks. | |
528 | Categories are: yes,no,all,none,release. | |
529 | Flags are: assert,df,extra,fold,gc,gcac,gimple,misc, | |
530 | rtlflag,rtl,runtime,tree,valgrind,types])], | |
531 | [ac_checking_flags="${enableval}"],[ | |
532 | # Determine the default checks. | |
533 | if test x$is_release = x ; then | |
534 | ac_checking_flags=yes,extra | |
535 | else | |
536 | ac_checking_flags=release | |
537 | fi]) | |
538 | IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," | |
539 | for check in release $ac_checking_flags | |
540 | do | |
541 | case $check in | |
542 | # these set all the flags to specific states | |
543 | yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; | |
544 | ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ; | |
545 | ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; | |
546 | ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; | |
547 | ac_tree_checking=1 ; ac_valgrind_checking= ; | |
548 | ac_types_checking=1 ;; | |
549 | no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; | |
550 | ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; | |
551 | ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; | |
552 | ac_rtlflag_checking= ; ac_runtime_checking= ; | |
553 | ac_tree_checking= ; ac_valgrind_checking= ; | |
554 | ac_types_checking= ;; | |
555 | all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; | |
556 | ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ; | |
557 | ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; | |
558 | ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; | |
559 | ac_tree_checking=1 ; ac_valgrind_checking= ; | |
560 | ac_types_checking=1 ;; | |
561 | release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; | |
562 | ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; | |
563 | ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; | |
564 | ac_rtlflag_checking= ; ac_runtime_checking=1 ; | |
565 | ac_tree_checking= ; ac_valgrind_checking= ; | |
566 | ac_types_checking= ;; | |
567 | # these enable particular checks | |
568 | assert) ac_assert_checking=1 ;; | |
569 | df) ac_df_checking=1 ;; | |
570 | extra) ac_extra_checking=1 ;; | |
571 | fold) ac_fold_checking=1 ;; | |
572 | gc) ac_gc_checking=1 ;; | |
573 | gcac) ac_gc_always_collect=1 ;; | |
574 | gimple) ac_gimple_checking=1 ;; | |
575 | misc) ac_checking=1 ;; | |
576 | rtl) ac_rtl_checking=1 ;; | |
577 | rtlflag) ac_rtlflag_checking=1 ;; | |
578 | runtime) ac_runtime_checking=1 ;; | |
579 | tree) ac_tree_checking=1 ;; | |
580 | types) ac_types_checking=1 ;; | |
581 | valgrind) ac_valgrind_checking=1 ;; | |
582 | *) AC_MSG_ERROR(unknown check category $check) ;; | |
583 | esac | |
584 | done | |
585 | IFS="$ac_save_IFS" | |
586 | ||
587 | nocommon_flag="" | |
588 | if test x$ac_checking != x ; then | |
589 | AC_DEFINE(CHECKING_P, 1, | |
590 | [Define to 0/1 if you want more run-time sanity checks. This one gets a grab | |
591 | bag of miscellaneous but relatively cheap checks.]) | |
592 | nocommon_flag=-fno-common | |
593 | else | |
594 | AC_DEFINE(CHECKING_P, 0) | |
595 | fi | |
596 | AC_SUBST(nocommon_flag) | |
597 | if test x$ac_extra_checking != x ; then | |
598 | AC_DEFINE(ENABLE_EXTRA_CHECKING, 1, | |
599 | [Define to 0/1 if you want extra run-time checking that might affect code | |
600 | generation.]) | |
601 | else | |
602 | AC_DEFINE(ENABLE_EXTRA_CHECKING, 0) | |
603 | fi | |
604 | if test x$ac_df_checking != x ; then | |
605 | AC_DEFINE(ENABLE_DF_CHECKING, 1, | |
606 | [Define if you want more run-time sanity checks for dataflow.]) | |
607 | fi | |
608 | if test x$ac_assert_checking != x ; then | |
609 | AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, | |
610 | [Define if you want assertions enabled. This is a cheap check.]) | |
611 | fi | |
612 | if test x$ac_gimple_checking != x ; then | |
613 | AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, | |
614 | [Define if you want operations on GIMPLE (the basic data structure of | |
615 | the high-level optimizers) to be checked for dynamic type safety at | |
616 | runtime. This is moderately expensive.]) | |
617 | fi | |
618 | GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) | |
619 | if test x$ac_runtime_checking != x ; then | |
620 | AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, | |
621 | [Define if you want runtime assertions enabled. This is a cheap check.]) | |
622 | fi | |
623 | if test x$ac_tree_checking != x ; then | |
624 | AC_DEFINE(ENABLE_TREE_CHECKING, 1, | |
625 | [Define if you want all operations on trees (the basic data | |
626 | structure of the front ends) to be checked for dynamic type safety | |
627 | at runtime. This is moderately expensive. | |
628 | ]) | |
629 | TREECHECKING=yes | |
630 | fi | |
631 | if test x$ac_types_checking != x ; then | |
632 | AC_DEFINE(ENABLE_TYPES_CHECKING, 1, | |
633 | [Define if you want all gimple types to be verified after gimplifiation. | |
634 | This is cheap. | |
635 | ]) | |
636 | fi | |
637 | AC_SUBST(TREECHECKING) | |
638 | if test x$ac_rtl_checking != x ; then | |
639 | AC_DEFINE(ENABLE_RTL_CHECKING, 1, | |
640 | [Define if you want all operations on RTL (the basic data structure | |
641 | of the optimizer and back end) to be checked for dynamic type safety | |
642 | at runtime. This is quite expensive.]) | |
643 | fi | |
644 | if test x$ac_rtlflag_checking != x ; then | |
645 | AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, | |
646 | [Define if you want RTL flag accesses to be checked against the RTL | |
647 | codes that are supported for each access macro. This is relatively | |
648 | cheap.]) | |
649 | fi | |
650 | if test x$ac_gc_checking != x ; then | |
651 | AC_DEFINE(ENABLE_GC_CHECKING, 1, | |
652 | [Define if you want the garbage collector to do object poisoning and | |
653 | other memory allocation checks. This is quite expensive.]) | |
654 | fi | |
655 | if test x$ac_gc_always_collect != x ; then | |
656 | AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, | |
657 | [Define if you want the garbage collector to operate in maximally | |
658 | paranoid mode, validating the entire heap and collecting garbage at | |
659 | every opportunity. This is extremely expensive.]) | |
660 | fi | |
661 | if test x$ac_fold_checking != x ; then | |
662 | AC_DEFINE(ENABLE_FOLD_CHECKING, 1, | |
663 | [Define if you want fold checked that it never destructs its argument. | |
664 | This is quite expensive.]) | |
665 | fi | |
666 | valgrind_path_defines= | |
667 | valgrind_command= | |
668 | ||
669 | dnl # This check AC_REQUIREs various stuff, so it *must not* be inside | |
670 | dnl # an if statement. This was the source of very frustrating bugs | |
671 | dnl # in converting to autoconf 2.5x! | |
672 | AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) | |
673 | ||
674 | # It is certainly possible that there's valgrind but no valgrind.h. | |
675 | # GCC relies on making annotations so we must have both. | |
676 | AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) | |
677 | AC_PREPROC_IFELSE([AC_LANG_SOURCE( | |
678 | [[#include <valgrind/memcheck.h> | |
679 | #ifndef VALGRIND_DISCARD | |
680 | #error VALGRIND_DISCARD not defined | |
681 | #endif]])], | |
682 | [gcc_cv_header_valgrind_memcheck_h=yes], | |
683 | [gcc_cv_header_valgrind_memcheck_h=no]) | |
684 | AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) | |
685 | AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) | |
686 | AC_PREPROC_IFELSE([AC_LANG_SOURCE( | |
687 | [[#include <memcheck.h> | |
688 | #ifndef VALGRIND_DISCARD | |
689 | #error VALGRIND_DISCARD not defined | |
690 | #endif]])], | |
691 | [gcc_cv_header_memcheck_h=yes], | |
692 | [gcc_cv_header_memcheck_h=no]) | |
693 | AC_MSG_RESULT($gcc_cv_header_memcheck_h) | |
694 | if test $gcc_cv_header_valgrind_memcheck_h = yes; then | |
695 | AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, | |
696 | [Define if valgrind's valgrind/memcheck.h header is installed.]) | |
697 | fi | |
698 | if test $gcc_cv_header_memcheck_h = yes; then | |
699 | AC_DEFINE(HAVE_MEMCHECK_H, 1, | |
700 | [Define if valgrind's memcheck.h header is installed.]) | |
701 | fi | |
702 | ||
703 | if test x$ac_valgrind_checking != x ; then | |
704 | AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, | |
705 | [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) | |
706 | if test "x$valgrind_path" = "x" \ | |
707 | || (test $have_valgrind_h = no \ | |
708 | && test $gcc_cv_header_memcheck_h = no \ | |
709 | && test $gcc_cv_header_valgrind_memcheck_h = no); then | |
710 | AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) | |
711 | fi | |
712 | valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' | |
713 | valgrind_command="$valgrind_path -q" | |
714 | AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, | |
715 | [Define if you want to run subprograms and generated programs | |
716 | through valgrind (a memory checker). This is extremely expensive.]) | |
717 | fi | |
718 | AC_SUBST(valgrind_path_defines) | |
719 | AC_SUBST(valgrind_command) | |
720 | ||
721 | # Enable code coverage collection | |
722 | AC_ARG_ENABLE(coverage, | |
723 | [AS_HELP_STRING([[--enable-coverage[=LEVEL]]], | |
724 | [enable compiler's code coverage collection. | |
725 | Use to measure compiler performance and locate | |
726 | unused parts of the compiler. With LEVEL, specify | |
727 | optimization. Values are opt, noopt, | |
728 | default is noopt])], | |
729 | [case "${enableval}" in | |
730 | yes|noopt) | |
731 | coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions" | |
732 | ;; | |
733 | opt) | |
734 | coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions" | |
735 | ;; | |
736 | no) | |
737 | # a.k.a. --disable-coverage | |
738 | coverage_flags="" | |
739 | ;; | |
740 | *) | |
741 | AC_MSG_ERROR(unknown coverage setting $enableval) | |
742 | ;; | |
743 | esac], | |
744 | [coverage_flags=""]) | |
745 | AC_SUBST(coverage_flags) | |
746 | ||
747 | AC_ARG_ENABLE(gather-detailed-mem-stats, | |
748 | [AS_HELP_STRING([--enable-gather-detailed-mem-stats], | |
749 | [enable detailed memory allocation stats gathering])], [], | |
750 | [enable_gather_detailed_mem_stats=no]) | |
751 | gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi` | |
752 | AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats, | |
753 | [Define to enable detailed memory allocation stats gathering.]) | |
754 | ||
755 | AC_ARG_ENABLE(valgrind-annotations, | |
756 | [AS_HELP_STRING([--enable-valgrind-annotations], | |
757 | [enable valgrind runtime interaction])], [], | |
758 | [enable_valgrind_annotations=no]) | |
759 | if test x$enable_valgrind_annotations != xno \ | |
760 | || test x$ac_valgrind_checking != x; then | |
761 | if (test $have_valgrind_h = no \ | |
762 | && test $gcc_cv_header_memcheck_h = no \ | |
763 | && test $gcc_cv_header_valgrind_memcheck_h = no); then | |
764 | AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h]) | |
765 | fi | |
766 | AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1, | |
767 | [Define to get calls to the valgrind runtime enabled.]) | |
768 | fi | |
769 | ||
770 | # ------------------------------- | |
771 | # Miscenalleous configure options | |
772 | # ------------------------------- | |
773 | ||
774 | # With stabs | |
775 | AC_ARG_WITH(stabs, | |
776 | [AS_HELP_STRING([--with-stabs], | |
777 | [arrange to use stabs instead of host debug format])], | |
778 | stabs="$with_stabs", | |
779 | stabs=no) | |
780 | ||
781 | # Determine whether or not multilibs are enabled. | |
782 | AC_ARG_ENABLE(multilib, | |
783 | [AS_HELP_STRING([--enable-multilib], | |
784 | [enable library support for multiple ABIs])], | |
785 | [], [enable_multilib=yes]) | |
786 | AC_SUBST(enable_multilib) | |
787 | ||
788 | # Determine whether or not multiarch is enabled. | |
789 | AC_ARG_ENABLE(multiarch, | |
790 | [AS_HELP_STRING([--enable-multiarch], | |
791 | [enable support for multiarch paths])], | |
792 | [case "${enableval}" in | |
793 | yes|no|auto) enable_multiarch=$enableval;; | |
794 | *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;; | |
795 | esac], [enable_multiarch=auto]) | |
796 | if test x${enable_multiarch} = xauto; then | |
797 | if test x${with_native_system_header_dir} != x; then | |
798 | ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)" | |
799 | enable_multiarch=no | |
800 | fi | |
801 | if test x$host != x$target && test "x$with_sysroot" = x; then | |
802 | ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)" | |
803 | enable_multiarch=no | |
804 | fi | |
805 | fi | |
806 | AC_MSG_CHECKING(for multiarch configuration) | |
807 | AC_SUBST(enable_multiarch) | |
808 | AC_MSG_RESULT($enable_multiarch$ma_msg_suffix) | |
809 | ||
810 | # needed for setting the multiarch name for soft-float/hard-float ABIs | |
811 | AC_SUBST(with_cpu) | |
812 | AC_SUBST(with_float) | |
813 | ||
814 | # default stack clash protection guard size as power of twos in bytes. | |
815 | # Please keep these in sync with params.def. | |
816 | stk_clash_min=12 | |
817 | stk_clash_max=30 | |
818 | ||
819 | # Keep the default value when the option is not used to 0, this allows us to | |
820 | # distinguish between the cases where the user specifially set a value via | |
821 | # configure and when the normal default value is used. | |
822 | AC_ARG_WITH(stack-clash-protection-guard-size, | |
823 | [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size], | |
824 | [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])], | |
825 | [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0]) | |
826 | if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \ | |
827 | && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \ | |
828 | || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then | |
829 | AC_MSG_ERROR(m4_normalize([ | |
830 | Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \ | |
831 | Must be between $stk_clash_min and $stk_clash_max.])) | |
832 | fi | |
833 | ||
834 | AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE, | |
835 | [Define to larger than zero set the default stack clash protector size.]) | |
836 | ||
837 | # Enable __cxa_atexit for C++. | |
838 | AC_ARG_ENABLE(__cxa_atexit, | |
839 | [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])], | |
840 | [], []) | |
841 | ||
842 | # Enable C extension for decimal float if target supports it. | |
843 | GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) | |
844 | ||
845 | dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` | |
846 | AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, | |
847 | [Define to 1 to enable decimal float extension to C.]) | |
848 | ||
849 | # Use default_decimal_float for dependency. | |
850 | enable_decimal_float=$default_decimal_float | |
851 | ||
852 | bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` | |
853 | AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, | |
854 | [Define to 1 to specify that we are using the BID decimal floating | |
855 | point format instead of DPD]) | |
856 | ||
857 | # Enable C extension for fixed-point arithmetic. | |
858 | AC_ARG_ENABLE(fixed-point, | |
859 | [AS_HELP_STRING([--enable-fixed-point], | |
860 | [enable fixed-point arithmetic extension to C])], | |
861 | [], | |
862 | [ | |
863 | case $target in | |
864 | arm*) | |
865 | enable_fixed_point=yes | |
866 | ;; | |
867 | ||
868 | mips*-*-*) | |
869 | enable_fixed_point=yes | |
870 | ;; | |
871 | *) | |
872 | AC_MSG_WARN([fixed-point is not supported for this target, ignored]) | |
873 | enable_fixed_point=no | |
874 | ;; | |
875 | esac | |
876 | ]) | |
877 | AC_SUBST(enable_fixed_point) | |
878 | ||
879 | fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` | |
880 | AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, | |
881 | [Define to 1 to enable fixed-point arithmetic extension to C.]) | |
882 | ||
883 | # Enable threads | |
884 | # Pass with no value to take the default | |
885 | # Pass with a value to specify a thread package | |
886 | AC_ARG_ENABLE(threads, | |
887 | [AS_HELP_STRING([[--enable-threads[=LIB]]], | |
888 | [enable thread usage for target GCC, | |
889 | using LIB thread package])],, | |
890 | [enable_threads='']) | |
891 | ||
892 | AC_ARG_ENABLE(tls, | |
893 | [AS_HELP_STRING([--enable-tls], | |
894 | [enable or disable generation of tls code | |
895 | overriding the assembler check for tls support])], | |
896 | [ | |
897 | case $enable_tls in | |
898 | yes | no) ;; | |
899 | *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. | |
900 | Valid choices are 'yes' and 'no'.]) ;; | |
901 | esac | |
902 | ], [enable_tls='']) | |
903 | ||
904 | AC_ARG_ENABLE(vtable-verify, | |
905 | [AS_HELP_STRING([--enable-vtable-verify], | |
906 | [enable vtable verification feature])],, | |
907 | [enable_vtable_verify=no]) | |
908 | vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi` | |
909 | AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify, | |
910 | [Define 0/1 if vtable verification feature is enabled.]) | |
911 | ||
912 | AC_ARG_ENABLE(objc-gc, | |
913 | [AS_HELP_STRING([--enable-objc-gc], | |
914 | [enable the use of Boehm's garbage collector with | |
915 | the GNU Objective-C runtime])], | |
916 | if test x$enable_objc_gc = xno; then | |
917 | objc_boehm_gc='' | |
918 | else | |
919 | objc_boehm_gc=1 | |
920 | fi, | |
921 | objc_boehm_gc='') | |
922 | ||
923 | AC_ARG_WITH(dwarf2, | |
924 | [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])], | |
925 | dwarf2="$with_dwarf2", | |
926 | dwarf2=no) | |
927 | ||
928 | AC_ARG_ENABLE(shared, | |
929 | [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])], | |
930 | [ | |
931 | case $enable_shared in | |
932 | yes | no) ;; | |
933 | *) | |
934 | enable_shared=no | |
935 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," | |
936 | for pkg in $enableval; do | |
937 | if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then | |
938 | enable_shared=yes | |
939 | fi | |
940 | done | |
941 | IFS="$ac_save_ifs" | |
942 | ;; | |
943 | esac | |
944 | ], [enable_shared=yes]) | |
945 | AC_SUBST(enable_shared) | |
946 | ||
947 | AC_ARG_ENABLE(gcov, | |
948 | [ --disable-gcov don't provide libgcov and related host tools], | |
949 | [], [enable_gcov=yes]) | |
950 | AC_SUBST(enable_gcov) | |
951 | ||
952 | AC_ARG_WITH(specs, | |
953 | [AS_HELP_STRING([--with-specs=SPECS], | |
954 | [add SPECS to driver command-line processing])], | |
955 | [CONFIGURE_SPECS=$withval], | |
956 | [CONFIGURE_SPECS=] | |
957 | ) | |
958 | AC_SUBST(CONFIGURE_SPECS) | |
959 | ||
960 | ACX_PKGVERSION([GCC]) | |
961 | ACX_BUGURL([https://gcc.gnu.org/bugs/]) | |
962 | ||
963 | # Allow overriding the default URL for documentation | |
964 | AC_ARG_WITH(documentation-root-url, | |
965 | AS_HELP_STRING([--with-documentation-root-url=URL], | |
966 | [Root for documentation URLs]), | |
967 | [case "$withval" in | |
968 | yes) AC_MSG_ERROR([documentation root URL not specified]) ;; | |
969 | no) AC_MSG_ERROR([documentation root URL not specified]) ;; | |
970 | *) DOCUMENTATION_ROOT_URL="$withval" | |
971 | ;; | |
972 | esac], | |
973 | DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/gcc/" | |
974 | ) | |
975 | AC_SUBST(DOCUMENTATION_ROOT_URL) | |
976 | ||
977 | # Sanity check enable_languages in case someone does not run the toplevel | |
978 | # configure # script. | |
979 | AC_ARG_ENABLE(languages, | |
980 | [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])], | |
981 | [case ,${enable_languages}, in | |
982 | ,,|,yes,) | |
983 | # go safe -- we cannot be much sure without the toplevel | |
984 | # configure's | |
985 | # analysis of which target libs are present and usable | |
986 | enable_languages=c | |
987 | ;; | |
988 | *,all,*) | |
989 | AC_MSG_ERROR([only the toplevel supports --enable-languages=all]) | |
990 | ;; | |
991 | *,c,*) | |
992 | ;; | |
993 | *) | |
994 | enable_languages=c,${enable_languages} | |
995 | ;; | |
996 | esac], | |
997 | [enable_languages=c]) | |
998 | ||
999 | # If top-level libada has been disabled, then wire in install-gnatlib | |
1000 | # invocation with `make install', so that one can build and install | |
1001 | # the library manually with `make -C gcc all gnatlib gnattools install'. | |
1002 | if test x"$enable_libada" = xno; then | |
1003 | gnat_install_lib=gnat-install-lib | |
1004 | else | |
1005 | gnat_install_lib= | |
1006 | fi | |
1007 | AC_SUBST(gnat_install_lib) | |
1008 | ||
1009 | if test x"$enable_as_accelerator_for" != x; then | |
1010 | AC_DEFINE(ACCEL_COMPILER, 1, | |
1011 | [Define if this compiler should be built as the offload target compiler.]) | |
1012 | enable_as_accelerator=yes | |
1013 | case "${target}" in | |
1014 | *-intelmicemul-*) | |
1015 | # In this case we expect offload compiler to be built as native, so we | |
1016 | # need to rename the driver to avoid clashes with host's drivers. | |
1017 | program_transform_name="s&^&${target}-&" ;; | |
1018 | esac | |
1019 | sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#" | |
1020 | program_transform_name=`echo $program_transform_name | sed $sedscript` | |
1021 | accel_dir_suffix=/accel/${target_noncanonical} | |
1022 | real_target_noncanonical=${enable_as_accelerator_for} | |
1023 | fi | |
1024 | AC_SUBST(enable_as_accelerator) | |
1025 | AC_SUBST(real_target_noncanonical) | |
1026 | AC_SUBST(accel_dir_suffix) | |
1027 | ||
1028 | for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do | |
1029 | tgt=`echo $tgt | sed 's/=.*//'` | |
1030 | ||
1031 | if echo "$tgt" | grep "^hsa" > /dev/null ; then | |
1032 | enable_hsa=1 | |
1033 | else | |
1034 | enable_offloading=1 | |
1035 | case "$tgt" in | |
1036 | *-intelmicemul-*) | |
1037 | omp_device_property=omp-device-properties-i386 | |
1038 | omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device" | |
1039 | ;; | |
1040 | gcn*-*) | |
1041 | omp_device_property=omp-device-properties-gcn | |
1042 | omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device" | |
1043 | ;; | |
1044 | nvptx*-*) | |
1045 | omp_device_property=omp-device-properties-nvptx | |
1046 | omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device" | |
1047 | ;; | |
1048 | esac | |
1049 | omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}" | |
1050 | omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}" | |
1051 | fi | |
1052 | ||
1053 | if test x"$offload_targets" = x; then | |
1054 | offload_targets=$tgt | |
1055 | else | |
1056 | offload_targets="$offload_targets,$tgt" | |
1057 | fi | |
1058 | done | |
1059 | AC_SUBST(omp_device_properties) | |
1060 | AC_SUBST(omp_device_property_deps) | |
1061 | ||
1062 | AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets", | |
1063 | [Define to offload targets, separated by commas.]) | |
1064 | if test x"$enable_offloading" != x; then | |
1065 | AC_DEFINE(ENABLE_OFFLOADING, 1, | |
1066 | [Define this to enable support for offloading.]) | |
1067 | else | |
1068 | AC_DEFINE(ENABLE_OFFLOADING, 0, | |
1069 | [Define this to enable support for offloading.]) | |
1070 | fi | |
1071 | ||
1072 | if test x"$enable_hsa" = x1 ; then | |
1073 | AC_DEFINE(ENABLE_HSA, 1, | |
1074 | [Define this to enable support for generating HSAIL.]) | |
1075 | fi | |
1076 | ||
1077 | AC_ARG_WITH(multilib-list, | |
1078 | [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])], | |
1079 | :, | |
1080 | with_multilib_list=default) | |
1081 | ||
1082 | # ------------------------- | |
1083 | # Checks for other programs | |
1084 | # ------------------------- | |
1085 | ||
1086 | AC_PROG_MAKE_SET | |
1087 | ||
1088 | # Find some useful tools | |
1089 | AC_PROG_AWK | |
1090 | # We need awk to create options.c and options.h. | |
1091 | # Bail out if it's missing. | |
1092 | case ${AWK} in | |
1093 | "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
1094 | esac | |
1095 | ||
1096 | gcc_AC_PROG_LN_S | |
1097 | ACX_PROG_LN($LN_S) | |
1098 | AC_PROG_RANLIB | |
1099 | ranlib_flags="" | |
1100 | AC_SUBST(ranlib_flags) | |
1101 | ||
1102 | gcc_AC_PROG_INSTALL | |
1103 | ||
1104 | # See if cmp has --ignore-initial. | |
1105 | gcc_AC_PROG_CMP_IGNORE_INITIAL | |
1106 | ||
1107 | # See if we have the mktemp command. | |
1108 | AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) | |
1109 | ||
1110 | # See if makeinfo has been installed and is modern enough | |
1111 | # that we can use it. | |
1112 | ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, | |
1113 | [GNU texinfo.* \([0-9][0-9.]*\)], | |
1114 | [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) | |
1115 | if test $gcc_cv_prog_makeinfo_modern = no; then | |
1116 | AC_MSG_WARN([ | |
1117 | *** Makeinfo is missing or too old. | |
1118 | *** Info documentation will not be built.]) | |
1119 | BUILD_INFO= | |
1120 | else | |
1121 | BUILD_INFO=info | |
1122 | fi | |
1123 | AC_SUBST(BUILD_INFO) | |
1124 | ||
1125 | # Is pod2man recent enough to regenerate manpages? | |
1126 | AC_MSG_CHECKING([for recent Pod::Man]) | |
1127 | if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then | |
1128 | AC_MSG_RESULT(yes) | |
1129 | GENERATED_MANPAGES=generated-manpages | |
1130 | else | |
1131 | AC_MSG_RESULT(no) | |
1132 | GENERATED_MANPAGES= | |
1133 | fi | |
1134 | AC_SUBST(GENERATED_MANPAGES) | |
1135 | ||
1136 | MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" | |
1137 | ||
1138 | # How about lex? | |
1139 | dnl Don't use AC_PROG_LEX; we insist on flex. | |
1140 | dnl LEXLIB is not useful in gcc. | |
1141 | AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) | |
1142 | ||
1143 | # Bison? | |
1144 | AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) | |
1145 | ||
1146 | # Binutils are not build modules, unlike bison/flex/makeinfo. So we | |
1147 | # check for build == host before using them. | |
1148 | ||
1149 | # NM | |
1150 | if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ | |
1151 | && test -d ../binutils ; then | |
1152 | NM='${objdir}/../binutils/nm-new' | |
1153 | else | |
1154 | AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) | |
1155 | fi | |
1156 | ||
1157 | # AR | |
1158 | if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ | |
1159 | && test -d ../binutils ; then | |
1160 | AR='${objdir}/../binutils/ar' | |
1161 | else | |
1162 | AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) | |
1163 | fi | |
1164 | ||
1165 | # The jit documentation looks better if built with sphinx, but can be | |
1166 | # built with texinfo if sphinx is not available. | |
1167 | # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly. | |
1168 | AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo) | |
1169 | ||
1170 | # -------------------- | |
1171 | # Checks for C headers | |
1172 | # -------------------- | |
1173 | ||
1174 | # Need to reject headers which give warnings, so that the -Werror bootstrap | |
1175 | # works later. *sigh* This needs to come before all header checks. | |
1176 | AC_PROG_CPP_WERROR | |
1177 | ||
1178 | AC_HEADER_STDC | |
1179 | AC_HEADER_TIME | |
1180 | ACX_HEADER_STRING | |
1181 | AC_HEADER_SYS_WAIT | |
1182 | AC_HEADER_TIOCGWINSZ | |
1183 | AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ | |
1184 | fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \ | |
1185 | sys/resource.h sys/param.h sys/times.h sys/stat.h \ | |
1186 | direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) | |
1187 | ||
1188 | # Check for thread headers. | |
1189 | AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) | |
1190 | AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) | |
1191 | ||
1192 | # These tests can't be done till we know if we have limits.h. | |
1193 | gcc_AC_C_CHAR_BIT | |
1194 | AC_C_BIGENDIAN | |
1195 | ||
1196 | # ---------------------- | |
1197 | # Checks for C++ headers | |
1198 | # ---------------------- | |
1199 | ||
1200 | dnl Autoconf will give an error in the configure script if there is no | |
1201 | dnl C++ preprocessor. Hack to prevent that. | |
1202 | m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl | |
1203 | AC_PROG_CXXCPP | |
1204 | m4_popdef([AC_MSG_ERROR])[]dnl | |
1205 | ||
1206 | AC_CHECK_HEADERS(unordered_map) | |
1207 | AC_CHECK_HEADERS(tr1/unordered_map) | |
1208 | AC_CHECK_HEADERS(ext/hash_map) | |
1209 | ||
1210 | # -------- | |
1211 | # Dependency checking. | |
1212 | # -------- | |
1213 | ||
1214 | ZW_CREATE_DEPDIR | |
1215 | AC_CONFIG_COMMANDS([gccdepdir],[ | |
1216 | ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR | |
1217 | for lang in $subdirs c-family common | |
1218 | do | |
1219 | ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR | |
1220 | done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR]) | |
1221 | ||
1222 | ZW_PROG_COMPILER_DEPENDENCIES([CXX]) | |
1223 | ||
1224 | # -------- | |
1225 | # UNSORTED | |
1226 | # -------- | |
1227 | ||
1228 | ||
1229 | # These libraries may be used by collect2. | |
1230 | # We may need a special search path to get them linked. | |
1231 | AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, | |
1232 | [save_LIBS="$LIBS" | |
1233 | for libs in '' -lld -lmld \ | |
1234 | '-L/usr/lib/cmplrs/cc2.11 -lmld' \ | |
1235 | '-L/usr/lib/cmplrs/cc3.11 -lmld' | |
1236 | do | |
1237 | LIBS="$libs" | |
1238 | AC_TRY_LINK_FUNC(ldopen, | |
1239 | [gcc_cv_collect2_libs="$libs"; break]) | |
1240 | done | |
1241 | LIBS="$save_LIBS" | |
1242 | test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) | |
1243 | case $gcc_cv_collect2_libs in | |
1244 | "none required") ;; | |
1245 | *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; | |
1246 | esac | |
1247 | AC_SUBST(COLLECT2_LIBS) | |
1248 | ||
1249 | # When building Ada code on Alpha, we need exc_resume which is usually in | |
1250 | # -lexc. So test for it. | |
1251 | save_LIBS="$LIBS" | |
1252 | LIBS= | |
1253 | AC_SEARCH_LIBS(exc_resume, exc) | |
1254 | GNAT_LIBEXC="$LIBS" | |
1255 | LIBS="$save_LIBS" | |
1256 | AC_SUBST(GNAT_LIBEXC) | |
1257 | ||
1258 | # To support -mcpu=native on Solaris/SPARC, we need libkstat. | |
1259 | save_LIBS="$LIBS" | |
1260 | LIBS= | |
1261 | AC_SEARCH_LIBS(kstat_open, kstat) | |
1262 | EXTRA_GCC_LIBS="$LIBS" | |
1263 | LIBS="$save_LIBS" | |
1264 | AC_SUBST(EXTRA_GCC_LIBS) | |
1265 | ||
1266 | # Some systems put ldexp and frexp in libm instead of libc; assume | |
1267 | # they're both in the same place. jcf-dump needs them. | |
1268 | save_LIBS="$LIBS" | |
1269 | LIBS= | |
1270 | AC_SEARCH_LIBS(ldexp, m) | |
1271 | LDEXP_LIB="$LIBS" | |
1272 | LIBS="$save_LIBS" | |
1273 | AC_SUBST(LDEXP_LIB) | |
1274 | ||
1275 | # Some systems need dlopen | |
1276 | save_LIBS="$LIBS" | |
1277 | LIBS= | |
1278 | AC_SEARCH_LIBS(dlopen, dl) | |
1279 | DL_LIB="$LIBS" | |
1280 | LIBS="$save_LIBS" | |
1281 | AC_SUBST(DL_LIB) | |
1282 | ||
1283 | # Use <inttypes.h> only if it exists, | |
1284 | # doesn't clash with <sys/types.h>, declares intmax_t and defines | |
1285 | # PRId64 | |
1286 | AC_MSG_CHECKING(for inttypes.h) | |
1287 | AC_CACHE_VAL(gcc_cv_header_inttypes_h, | |
1288 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( | |
1289 | [[#define __STDC_FORMAT_MACROS | |
1290 | #include <sys/types.h> | |
1291 | #include <inttypes.h>]], | |
1292 | [[intmax_t i = -1; | |
1293 | #ifndef PRId64 | |
1294 | choke me | |
1295 | #endif]])], | |
1296 | [gcc_cv_header_inttypes_h=yes], | |
1297 | [gcc_cv_header_inttypes_h=no])]) | |
1298 | AC_MSG_RESULT($gcc_cv_header_inttypes_h) | |
1299 | if test $gcc_cv_header_inttypes_h = yes; then | |
1300 | AC_DEFINE(HAVE_INTTYPES_H, 1, | |
1301 | [Define if you have a working <inttypes.h> header file.]) | |
1302 | fi | |
1303 | ||
1304 | # Look for the ZSTD package. | |
1305 | ZSTD_INCLUDE= | |
1306 | ZSTD_LIB= | |
1307 | AC_SUBST(ZSTD_INCLUDE) | |
1308 | AC_SUBST(ZSTD_LIB) | |
1309 | ZSTD_CPPFLAGS= | |
1310 | ZSTD_LDFLAGS= | |
1311 | AC_ARG_WITH(zstd, | |
1312 | [AS_HELP_STRING([--with-zstd=PATH], | |
1313 | [specify prefix directory for installed zstd library. | |
1314 | Equivalent to --with-zstd-include=PATH/include | |
1315 | plus --with-zstd-lib=PATH/lib])]) | |
1316 | AC_ARG_WITH(zstd-include, | |
1317 | [AS_HELP_STRING([--with-zstd-include=PATH], | |
1318 | [specify directory for installed zstd include files])]) | |
1319 | AC_ARG_WITH(zstd-lib, | |
1320 | [AS_HELP_STRING([--with-zstd-lib=PATH], | |
1321 | [specify directory for the installed zstd library])]) | |
1322 | case "x$with_zstd" in | |
1323 | x) ;; | |
1324 | xno) | |
1325 | ZSTD_INCLUDE=no | |
1326 | ZSTD_LIB=no | |
1327 | ;; | |
1328 | *) ZSTD_INCLUDE=$with_zstd/include | |
1329 | ZSTD_LIB=$with_zstd/lib | |
1330 | ;; | |
1331 | esac | |
1332 | if test "x$with_zstd_include" != x; then | |
1333 | ZSTD_INCLUDE=$with_zstd_include | |
1334 | fi | |
1335 | if test "x$with_zstd_lib" != x; then | |
1336 | ZSTD_LIB=$with_zstd_lib | |
1337 | fi | |
1338 | if test "x$ZSTD_INCLUDE" != x \ | |
1339 | && test "x$ZSTD_INCLUDE" != xno; then | |
1340 | ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE | |
1341 | fi | |
1342 | if test "x$ZSTD_LIB" != x \ | |
1343 | && test "x$ZSTD_LIB" != xno; then | |
1344 | ZSTD_LDFLAGS=-L$ZSTD_LIB | |
1345 | fi | |
1346 | ||
1347 | CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS" | |
1348 | LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS" | |
1349 | ||
1350 | AC_MSG_CHECKING(for zstd.h) | |
1351 | AC_CACHE_VAL(gcc_cv_header_zstd_h, | |
1352 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( | |
1353 | [[#include <zstd.h>]])], | |
1354 | [gcc_cv_header_zstd_h=yes], | |
1355 | [gcc_cv_header_zstd_h=no])]) | |
1356 | AC_MSG_RESULT($gcc_cv_header_zstd_h) | |
1357 | if test $gcc_cv_header_zstd_h = yes; then | |
1358 | AC_DEFINE(HAVE_ZSTD_H, 1, | |
1359 | [Define if you have a working <zstd.h> header file.]) | |
1360 | fi | |
1361 | ||
1362 | # LTO can use zstd compression algorithm | |
1363 | save_LIBS="$LIBS" | |
1364 | LIBS= | |
1365 | AC_SEARCH_LIBS(ZSTD_compress, zstd) | |
1366 | ZSTD_LIB="$LIBS" | |
1367 | LIBS="$save_LIBS" | |
1368 | AC_SUBST(ZSTD_LIB) | |
1369 | ||
1370 | dnl Disabled until we have a complete test for buggy enum bitfields. | |
1371 | dnl gcc_AC_C_ENUM_BF_UNSIGNED | |
1372 | ||
1373 | define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl | |
1374 | ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl | |
1375 | fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl | |
1376 | fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl | |
1377 | putchar_unlocked putc_unlocked) | |
1378 | AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \ | |
1379 | popen sysconf strsignal getrusage nl_langinfo \ | |
1380 | gettimeofday mbstowcs wcswidth mmap setlocale \ | |
1381 | gcc_UNLOCKED_FUNCS madvise mallinfo) | |
1382 | ||
1383 | if test x$ac_cv_func_mbstowcs = xyes; then | |
1384 | AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, | |
1385 | [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h> | |
1386 | int main() | |
1387 | { | |
1388 | mbstowcs(0, "", 0); | |
1389 | return 0; | |
1390 | }]])], | |
1391 | [gcc_cv_func_mbstowcs_works=yes], | |
1392 | [gcc_cv_func_mbstowcs_works=no], | |
1393 | [gcc_cv_func_mbstowcs_works=yes])]) | |
1394 | if test x$gcc_cv_func_mbstowcs_works = xyes; then | |
1395 | AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, | |
1396 | [Define this macro if mbstowcs does not crash when its | |
1397 | first argument is NULL.]) | |
1398 | fi | |
1399 | fi | |
1400 | ||
1401 | AC_CHECK_TYPE(ssize_t, int) | |
1402 | AC_CHECK_TYPE(caddr_t, char *) | |
1403 | ||
1404 | GCC_AC_FUNC_MMAP_BLACKLIST | |
1405 | ||
1406 | case "${host}" in | |
1407 | *-*-*vms*) | |
1408 | # Under VMS, vfork works very differently than on Unix. The standard test | |
1409 | # won't work, and it isn't easily adaptable. It makes more sense to | |
1410 | # just force it. | |
1411 | ac_cv_func_vfork_works=yes | |
1412 | ;; | |
1413 | esac | |
1414 | AC_FUNC_FORK | |
1415 | ||
1416 | AM_ICONV | |
1417 | ||
1418 | # Until we have in-tree GNU iconv: | |
1419 | LIBICONV_DEP= | |
1420 | if test -f "$LTLIBICONV"; then | |
1421 | LIBICONV_DEP=$LTLIBICONV | |
1422 | fi | |
1423 | AC_SUBST(LIBICONV_DEP) | |
1424 | ||
1425 | AM_LC_MESSAGES | |
1426 | ||
1427 | AM_LANGINFO_CODESET | |
1428 | ||
1429 | # We will need to find libiberty.h and ansidecl.h | |
1430 | saved_CFLAGS="$CFLAGS" | |
1431 | CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" | |
1432 | saved_CXXFLAGS="$CXXFLAGS" | |
1433 | CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" | |
1434 | ||
1435 | # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the | |
1436 | # normal autoconf function for these. But force definition of | |
1437 | # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre | |
1438 | # basename handling in libiberty.h. | |
1439 | AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[ | |
1440 | #undef HAVE_DECL_BASENAME | |
1441 | #define HAVE_DECL_BASENAME 1 | |
1442 | #include "ansidecl.h" | |
1443 | #include "system.h"]) | |
1444 | ||
1445 | gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \ | |
1446 | madvise stpcpy strnlen strsignal strverscmp \ | |
1447 | strtol strtoul strtoll strtoull setenv unsetenv \ | |
1448 | errno snprintf vsnprintf vasprintf malloc realloc calloc \ | |
1449 | free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[ | |
1450 | #include "ansidecl.h" | |
1451 | #include "system.h"]) | |
1452 | ||
1453 | gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ | |
1454 | #include "ansidecl.h" | |
1455 | #include "system.h" | |
1456 | #ifdef HAVE_SYS_RESOURCE_H | |
1457 | #include <sys/resource.h> | |
1458 | #endif | |
1459 | ]) | |
1460 | ||
1461 | gcc_AC_CHECK_DECLS(mallinfo, , ,[ | |
1462 | #include "ansidecl.h" | |
1463 | #include "system.h" | |
1464 | #ifdef HAVE_MALLOC_H | |
1465 | #include <malloc.h> | |
1466 | #endif | |
1467 | ]) | |
1468 | ||
1469 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1470 | #include "ansidecl.h" | |
1471 | #include "system.h" | |
1472 | #ifdef HAVE_SYS_RESOURCE_H | |
1473 | #include <sys/resource.h> | |
1474 | #endif | |
1475 | ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], | |
1476 | [Define to `long' if <sys/resource.h> doesn't define.])]) | |
1477 | ||
1478 | # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible | |
1479 | # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname | |
1480 | # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs | |
1481 | # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME. | |
1482 | gcc_AC_CHECK_DECLS(ldgetname, , ,[ | |
1483 | #include "ansidecl.h" | |
1484 | #include "system.h" | |
1485 | #ifdef HAVE_LDFCN_H | |
1486 | #undef FREAD | |
1487 | #undef FWRITE | |
1488 | #include <ldfcn.h> | |
1489 | #endif | |
1490 | ]) | |
1491 | ||
1492 | gcc_AC_CHECK_DECLS(times, , ,[ | |
1493 | #include "ansidecl.h" | |
1494 | #include "system.h" | |
1495 | #ifdef HAVE_SYS_TIMES_H | |
1496 | #include <sys/times.h> | |
1497 | #endif | |
1498 | ]) | |
1499 | ||
1500 | gcc_AC_CHECK_DECLS(sigaltstack, , ,[ | |
1501 | #include "ansidecl.h" | |
1502 | #include "system.h" | |
1503 | #include <signal.h> | |
1504 | ]) | |
1505 | ||
1506 | # More time-related stuff. | |
1507 | AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ | |
1508 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1509 | #include "ansidecl.h" | |
1510 | #include "system.h" | |
1511 | #ifdef HAVE_SYS_TIMES_H | |
1512 | #include <sys/times.h> | |
1513 | #endif | |
1514 | ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) | |
1515 | if test $ac_cv_struct_tms = yes; then | |
1516 | AC_DEFINE(HAVE_STRUCT_TMS, 1, | |
1517 | [Define if <sys/times.h> defines struct tms.]) | |
1518 | fi | |
1519 | ||
1520 | # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. | |
1521 | # revisit after autoconf 2.50. | |
1522 | AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ | |
1523 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1524 | #include "ansidecl.h" | |
1525 | #include "system.h" | |
1526 | ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) | |
1527 | if test $gcc_cv_type_clock_t = yes; then | |
1528 | AC_DEFINE(HAVE_CLOCK_T, 1, | |
1529 | [Define if <time.h> defines clock_t.]) | |
1530 | fi | |
1531 | ||
1532 | # Check if F_SETLKW is supported by fcntl. | |
1533 | AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [ | |
1534 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
1535 | #include <fcntl.h>]], [[ | |
1536 | struct flock fl; | |
1537 | fl.l_whence = 0; | |
1538 | fl.l_start = 0; | |
1539 | fl.l_len = 0; | |
1540 | fl.l_pid = 0; | |
1541 | return fcntl (1, F_SETLKW, &fl);]])], | |
1542 | [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])]) | |
1543 | if test $ac_cv_f_setlkw = yes; then | |
1544 | AC_DEFINE(HOST_HAS_F_SETLKW, 1, | |
1545 | [Define if F_SETLKW supported by fcntl.]) | |
1546 | fi | |
1547 | ||
1548 | # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. | |
1549 | CFLAGS="$saved_CFLAGS" | |
1550 | CXXFLAGS="$saved_CXXFLAGS" | |
1551 | ||
1552 | # mkdir takes a single argument on some systems. | |
1553 | gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG | |
1554 | ||
1555 | # File extensions | |
1556 | manext='.1' | |
1557 | objext='.o' | |
1558 | AC_SUBST(manext) | |
1559 | AC_SUBST(objext) | |
1560 | ||
1561 | # With Setjmp/Longjmp based exception handling. | |
1562 | AC_ARG_ENABLE(sjlj-exceptions, | |
1563 | [AS_HELP_STRING([--enable-sjlj-exceptions], | |
1564 | [arrange to use setjmp/longjmp exception handling])], | |
1565 | [case $target in | |
1566 | *-*-hpux10*) | |
1567 | if test $enableval != yes; then | |
1568 | AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) | |
1569 | enableval=yes | |
1570 | fi | |
1571 | ;; | |
1572 | esac | |
1573 | force_sjlj_exceptions=yes], | |
1574 | [case $target in | |
1575 | *-*-hpux10*) | |
1576 | force_sjlj_exceptions=yes | |
1577 | enableval=yes | |
1578 | ;; | |
1579 | lm32*-*-*) | |
1580 | force_sjlj_exceptions=yes | |
1581 | enableval=yes | |
1582 | ;; | |
1583 | *) | |
1584 | force_sjlj_exceptions=no | |
1585 | ;; | |
1586 | esac]) | |
1587 | if test $force_sjlj_exceptions = yes; then | |
1588 | sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` | |
1589 | AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, | |
1590 | [Define 0/1 to force the choice for exception handling model.]) | |
1591 | fi | |
1592 | ||
1593 | # -------------------------------------------------------- | |
1594 | # Build, host, and target specific configuration fragments | |
1595 | # -------------------------------------------------------- | |
1596 | ||
1597 | # Collect build-machine-specific information. | |
1598 | . ${srcdir}/config.build || exit 1 | |
1599 | ||
1600 | # Collect host-machine-specific information. | |
1601 | . ${srcdir}/config.host || exit 1 | |
1602 | ||
1603 | target_gtfiles= | |
1604 | ||
1605 | # Collect target-machine-specific information. | |
1606 | . ${srcdir}/config.gcc || exit 1 | |
1607 | ||
1608 | extra_objs="${host_extra_objs} ${extra_objs}" | |
1609 | extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" | |
1610 | ||
1611 | # Default the target-machine variables that were not explicitly set. | |
1612 | if test x"$tm_file" = x | |
1613 | then tm_file=$cpu_type/$cpu_type.h; fi | |
1614 | ||
1615 | if test x"$extra_headers" = x | |
1616 | then extra_headers=; fi | |
1617 | ||
1618 | if test x$md_file = x | |
1619 | then md_file=$cpu_type/$cpu_type.md; fi | |
1620 | ||
1621 | if test x$out_file = x | |
1622 | then out_file=$cpu_type/$cpu_type.c; fi | |
1623 | ||
1624 | if test x"$tmake_file" = x | |
1625 | then tmake_file=$cpu_type/t-$cpu_type | |
1626 | fi | |
1627 | ||
1628 | # Support --enable-initfini-array. | |
1629 | if test x$enable_initfini_array != xno; then | |
1630 | tm_file="${tm_file} initfini-array.h" | |
1631 | fi | |
1632 | ||
1633 | if test x"$dwarf2" = xyes | |
1634 | then tm_file="$tm_file tm-dwarf2.h" | |
1635 | fi | |
1636 | ||
1637 | # Say what files are being used for the output code and MD file. | |
1638 | echo "Using \`$srcdir/config/$out_file' for machine-specific logic." | |
1639 | echo "Using \`$srcdir/config/$md_file' as machine description file." | |
1640 | ||
1641 | # If any of the xm_file variables contain nonexistent files, warn | |
1642 | # about them and drop them. | |
1643 | ||
1644 | bx= | |
1645 | for x in $build_xm_file; do | |
1646 | if test -f $srcdir/config/$x | |
1647 | then bx="$bx $x" | |
1648 | else AC_MSG_WARN($srcdir/config/$x does not exist.) | |
1649 | fi | |
1650 | done | |
1651 | build_xm_file="$bx" | |
1652 | ||
1653 | hx= | |
1654 | for x in $host_xm_file; do | |
1655 | if test -f $srcdir/config/$x | |
1656 | then hx="$hx $x" | |
1657 | else AC_MSG_WARN($srcdir/config/$x does not exist.) | |
1658 | fi | |
1659 | done | |
1660 | host_xm_file="$hx" | |
1661 | ||
1662 | tx= | |
1663 | for x in $xm_file; do | |
1664 | if test -f $srcdir/config/$x | |
1665 | then tx="$tx $x" | |
1666 | else AC_MSG_WARN($srcdir/config/$x does not exist.) | |
1667 | fi | |
1668 | done | |
1669 | xm_file="$tx" | |
1670 | ||
1671 | count=a | |
1672 | for f in $tm_file; do | |
1673 | count=${count}x | |
1674 | done | |
1675 | if test $count = ax; then | |
1676 | echo "Using \`$srcdir/config/$tm_file' as target machine macro file." | |
1677 | else | |
1678 | echo "Using the following target machine macro files:" | |
1679 | for f in $tm_file; do | |
1680 | echo " $srcdir/config/$f" | |
1681 | done | |
1682 | fi | |
1683 | ||
1684 | if test x$use_long_long_for_widest_fast_int = xyes; then | |
1685 | AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, | |
1686 | [Define to 1 if the 'long long' type is wider than 'long' but still | |
1687 | efficiently supported by the host hardware.]) | |
1688 | fi | |
1689 | ||
1690 | gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi` | |
1691 | AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.]) | |
1692 | ||
1693 | gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi` | |
1694 | AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.]) | |
1695 | ||
1696 | count=a | |
1697 | for f in $host_xm_file; do | |
1698 | count=${count}x | |
1699 | done | |
1700 | if test $count = a; then | |
1701 | : | |
1702 | elif test $count = ax; then | |
1703 | echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." | |
1704 | else | |
1705 | echo "Using the following host machine macro files:" | |
1706 | for f in $host_xm_file; do | |
1707 | echo " $srcdir/config/$f" | |
1708 | done | |
1709 | fi | |
1710 | echo "Using ${out_host_hook_obj} for host machine hooks." | |
1711 | ||
1712 | if test "$host_xm_file" != "$build_xm_file"; then | |
1713 | count=a | |
1714 | for f in $build_xm_file; do | |
1715 | count=${count}x | |
1716 | done | |
1717 | if test $count = a; then | |
1718 | : | |
1719 | elif test $count = ax; then | |
1720 | echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." | |
1721 | else | |
1722 | echo "Using the following build machine macro files:" | |
1723 | for f in $build_xm_file; do | |
1724 | echo " $srcdir/config/$f" | |
1725 | done | |
1726 | fi | |
1727 | fi | |
1728 | ||
1729 | if test -n "$configured_native_system_header_dir"; then | |
1730 | native_system_header_dir=$configured_native_system_header_dir | |
1731 | fi | |
1732 | NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir" | |
1733 | AC_SUBST(NATIVE_SYSTEM_HEADER_DIR) | |
1734 | ||
1735 | case ${host} in | |
1736 | powerpc*-*-darwin*) | |
1737 | AC_CACHE_CHECK([whether mcontext_t fields have underscores], | |
1738 | gcc_cv_mcontext_underscores, | |
1739 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([ | |
1740 | #include <sys/cdefs.h> | |
1741 | #include <sys/signal.h> | |
1742 | #include <ucontext.h> | |
1743 | int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } | |
1744 | ])], | |
1745 | gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) | |
1746 | if test $gcc_cv_mcontext_underscores = yes; then | |
1747 | AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl | |
1748 | [mcontext_t fields start with __]) | |
1749 | fi | |
1750 | ;; | |
1751 | esac | |
1752 | ||
1753 | # --------- | |
1754 | # Threading | |
1755 | # --------- | |
1756 | ||
1757 | # Check if a valid thread package | |
1758 | case ${enable_threads} in | |
1759 | "" | no) | |
1760 | # No threads | |
1761 | target_thread_file='single' | |
1762 | ;; | |
1763 | yes) | |
1764 | # default | |
1765 | target_thread_file='single' | |
1766 | ;; | |
1767 | aix | dce | lynx | mipssde | posix | rtems | \ | |
1768 | single | tpf | vxworks | win32) | |
1769 | target_thread_file=${enable_threads} | |
1770 | ;; | |
1771 | *) | |
1772 | echo "${enable_threads} is an unknown thread package" 1>&2 | |
1773 | exit 1 | |
1774 | ;; | |
1775 | esac | |
1776 | ||
1777 | if test x${thread_file} = x; then | |
1778 | # No thread file set by target-specific clauses in config.gcc, | |
1779 | # so use file chosen by default logic above | |
1780 | thread_file=${target_thread_file} | |
1781 | fi | |
1782 | ||
1783 | # -------- | |
1784 | # UNSORTED | |
1785 | # -------- | |
1786 | ||
1787 | use_cxa_atexit=no | |
1788 | if test x$enable___cxa_atexit = xyes || \ | |
1789 | test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then | |
1790 | if test x$host = x$target; then | |
1791 | case $host in | |
1792 | # mingw32 doesn't have __cxa_atexit but uses atexit registration | |
1793 | # keyed to flag_use_cxa_atexit | |
1794 | *-*-mingw32*) | |
1795 | use_cxa_atexit=yes | |
1796 | ;; | |
1797 | powerpc-ibm-aix*) | |
1798 | use_cxa_atexit=yes | |
1799 | ;; | |
1800 | *) | |
1801 | AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], | |
1802 | [echo "__cxa_atexit can't be enabled on this target"]) | |
1803 | ;; | |
1804 | esac | |
1805 | else | |
1806 | # We can't check for __cxa_atexit when building a cross, so assume | |
1807 | # it is available | |
1808 | use_cxa_atexit=yes | |
1809 | fi | |
1810 | if test x$use_cxa_atexit = xyes; then | |
1811 | AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, | |
1812 | [Define if you want to use __cxa_atexit, rather than atexit, to | |
1813 | register C++ destructors for local statics and global objects. | |
1814 | This is essential for fully standards-compliant handling of | |
1815 | destructors, but requires __cxa_atexit in libc.]) | |
1816 | fi | |
1817 | fi | |
1818 | ||
1819 | # Look for a file containing extra machine modes. | |
1820 | if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then | |
1821 | extra_modes_file='$(srcdir)'/config/${extra_modes} | |
1822 | AC_SUBST(extra_modes_file) | |
1823 | AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", | |
1824 | [Define to the name of a file containing a list of extra machine modes | |
1825 | for this architecture.]) | |
1826 | fi | |
1827 | ||
1828 | # Convert extra_options into a form suitable for Makefile use. | |
1829 | extra_opt_files= | |
1830 | all_opt_files= | |
1831 | for f in $extra_options; do | |
1832 | extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" | |
1833 | all_opt_files="$all_opt_files $srcdir/config/$f" | |
1834 | done | |
1835 | AC_SUBST(extra_opt_files) | |
1836 | ||
1837 | # auto-host.h is the file containing items generated by autoconf and is | |
1838 | # the first file included by config.h. | |
1839 | # If host=build, it is correct to have bconfig include auto-host.h | |
1840 | # as well. If host!=build, we are in error and need to do more | |
1841 | # work to find out the build config parameters. | |
1842 | if test x$host = x$build | |
1843 | then | |
1844 | build_auto=auto-host.h | |
1845 | HAVE_AUTO_BUILD='# ' | |
1846 | else | |
1847 | # We create a subdir, then run autoconf in the subdir. | |
1848 | # To prevent recursion we set host and build for the new | |
1849 | # invocation of configure to the build for this invocation | |
1850 | # of configure. | |
1851 | tempdir=build.$$ | |
1852 | rm -rf $tempdir | |
1853 | mkdir $tempdir | |
1854 | cd $tempdir | |
1855 | case ${srcdir} in | |
1856 | /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; | |
1857 | *) realsrcdir=../${srcdir};; | |
1858 | esac | |
1859 | # Clearing GMPINC is necessary to prevent host headers being | |
1860 | # used by the build compiler. Defining GENERATOR_FILE stops | |
1861 | # system.h from including gmp.h. | |
1862 | CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ | |
1863 | CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \ | |
1864 | LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \ | |
1865 | GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \ | |
1866 | ${realsrcdir}/configure \ | |
1867 | --enable-languages=${enable_languages-all} \ | |
1868 | ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \ | |
1869 | ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \ | |
1870 | --target=$target_alias --host=$build_alias \ | |
1871 | --build=$build_alias || exit # retaining $tempdir | |
1872 | ||
1873 | # We just finished tests for the build machine, so rename | |
1874 | # the file auto-build.h in the gcc directory. | |
1875 | mv auto-host.h ../auto-build.h | |
1876 | cd .. | |
1877 | rm -rf $tempdir | |
1878 | build_auto=auto-build.h | |
1879 | HAVE_AUTO_BUILD= | |
1880 | fi | |
1881 | AC_SUBST(build_subdir) | |
1882 | AC_SUBST(HAVE_AUTO_BUILD) | |
1883 | ||
1884 | tm_file="${tm_file} defaults.h" | |
1885 | tm_p_file="${tm_p_file} tm-preds.h" | |
1886 | tm_d_file="${tm_d_file} defaults.h" | |
1887 | host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" | |
1888 | build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" | |
1889 | # We don't want ansidecl.h in target files, write code there in ISO/GNU C. | |
1890 | # put this back in temporarily. | |
1891 | xm_file="auto-host.h ansidecl.h ${xm_file}" | |
1892 | ||
1893 | # -------- | |
1894 | # UNSORTED | |
1895 | # -------- | |
1896 | ||
1897 | changequote(,)dnl | |
1898 | # Compile in configure arguments. | |
1899 | if test -f configargs.h ; then | |
1900 | # Being re-configured. | |
1901 | gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` | |
1902 | gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'` | |
1903 | if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then | |
1904 | gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" | |
1905 | fi | |
1906 | else | |
1907 | gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" | |
1908 | fi | |
1909 | ||
1910 | # Double all backslashes and backslash all quotes to turn | |
1911 | # gcc_config_arguments into a C string. | |
1912 | sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out | |
1913 | $gcc_config_arguments | |
1914 | EOF | |
1915 | gcc_config_arguments_str=`cat conftest.out` | |
1916 | rm -f conftest.out | |
1917 | ||
1918 | cat > configargs.h <<EOF | |
1919 | /* Generated automatically. */ | |
1920 | static const char configuration_arguments[] = "$gcc_config_arguments_str"; | |
1921 | static const char thread_model[] = "$thread_file"; | |
1922 | ||
1923 | static const struct { | |
1924 | const char *name, *value; | |
1925 | } configure_default_options[] = $configure_default_options; | |
1926 | EOF | |
1927 | changequote([,])dnl | |
1928 | ||
1929 | changequote(,)dnl | |
1930 | gcc_BASEVER=`cat $srcdir/BASE-VER` | |
1931 | gcc_DEVPHASE=`cat $srcdir/DEV-PHASE` | |
1932 | gcc_DATESTAMP=`cat $srcdir/DATESTAMP` | |
1933 | if test -f $srcdir/REVISION ; then | |
1934 | gcc_REVISION=`cat $srcdir/REVISION` | |
1935 | else | |
1936 | gcc_REVISION="" | |
1937 | fi | |
1938 | cat > plugin-version.h <<EOF | |
1939 | #include "configargs.h" | |
1940 | ||
1941 | #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'` | |
1942 | #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'` | |
1943 | #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'` | |
1944 | #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR) | |
1945 | ||
1946 | static char basever[] = "$gcc_BASEVER"; | |
1947 | static char datestamp[] = "$gcc_DATESTAMP"; | |
1948 | static char devphase[] = "$gcc_DEVPHASE"; | |
1949 | static char revision[] = "$gcc_REVISION"; | |
1950 | ||
1951 | /* FIXME plugins: We should make the version information more precise. | |
1952 | One way to do is to add a checksum. */ | |
1953 | ||
1954 | static struct plugin_gcc_version gcc_version = {basever, datestamp, | |
1955 | devphase, revision, | |
1956 | configuration_arguments}; | |
1957 | EOF | |
1958 | changequote([,])dnl | |
1959 | ||
1960 | # Determine what GCC version number to use in filesystem paths. | |
1961 | GCC_BASE_VER | |
1962 | ||
1963 | # Internationalization | |
1964 | ZW_GNU_GETTEXT_SISTER_DIR | |
1965 | ||
1966 | # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get | |
1967 | # -liconv on the link line twice. | |
1968 | case "$LIBINTL" in *$LIBICONV*) | |
1969 | LIBICONV= ;; | |
1970 | esac | |
1971 | ||
1972 | AC_ARG_ENABLE(secureplt, | |
1973 | [AS_HELP_STRING([--enable-secureplt], | |
1974 | [enable -msecure-plt by default for PowerPC])], | |
1975 | [], []) | |
1976 | ||
1977 | AC_ARG_ENABLE(mingw-wildcard, | |
1978 | [AS_HELP_STRING([--enable-mingw-wildcard], | |
1979 | [Set whether to expand wildcard on command-line. | |
1980 | Default to platform configuration])], | |
1981 | [],[enable_mingw_wildcard=platform]) | |
1982 | AS_IF([test x"$enable_mingw_wildcard" != xplatform ], | |
1983 | [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD, | |
1984 | $(test x"$enable_mingw_wildcard" = xno; echo $?), | |
1985 | [Value to set mingw's _dowildcard to.])]) | |
1986 | ||
1987 | AC_ARG_ENABLE(large-address-aware, | |
1988 | [AS_HELP_STRING([--enable-large-address-aware], | |
1989 | [Link mingw executables with --large-address-aware])]) | |
1990 | AS_IF([test x"$enable_large_address_aware" = xyes], | |
1991 | [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1, | |
1992 | [Define if we should link mingw executables with --large-address-aware])]) | |
1993 | ||
1994 | AC_ARG_ENABLE(leading-mingw64-underscores, | |
1995 | AS_HELP_STRING([--enable-leading-mingw64-underscores], | |
1996 | [enable leading underscores on 64 bit mingw targets]), | |
1997 | [],[]) | |
1998 | AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ], | |
1999 | [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1, | |
2000 | [Define if we should use leading underscore on 64 bit mingw targets])]) | |
2001 | ||
2002 | AC_ARG_ENABLE(cld, | |
2003 | [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [], | |
2004 | [enable_cld=no]) | |
2005 | ||
2006 | AC_ARG_ENABLE(frame-pointer, | |
2007 | [AS_HELP_STRING([--enable-frame-pointer], | |
2008 | [enable -fno-omit-frame-pointer by default for x86])], [], | |
2009 | [ | |
2010 | case $target_os in | |
2011 | linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*) | |
2012 | # Enable -fomit-frame-pointer by default for these systems with DWARF2. | |
2013 | enable_frame_pointer=no | |
2014 | ;; | |
2015 | *) | |
2016 | enable_frame_pointer=yes | |
2017 | ;; | |
2018 | esac | |
2019 | ]) | |
2020 | ||
2021 | case $target in | |
2022 | i[[34567]]86-*-* | x86_64-*-*) | |
2023 | if test "x$enable_cld" = xyes; then | |
2024 | tm_defines="${tm_defines} USE_IX86_CLD=1" | |
2025 | fi | |
2026 | if test "x$enable_frame_pointer" = xyes; then | |
2027 | tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1" | |
2028 | fi | |
2029 | ;; | |
2030 | esac | |
2031 | ||
2032 | # Windows32 Registry support for specifying GCC installation paths. | |
2033 | AC_ARG_ENABLE(win32-registry, | |
2034 | [AS_HELP_STRING([--disable-win32-registry], | |
2035 | [disable lookup of installation paths in the | |
2036 | Registry on Windows hosts]) | |
2037 | AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)]) | |
2038 | AS_HELP_STRING([--enable-win32-registry=KEY], | |
2039 | [use KEY instead of GCC version as the last portion | |
2040 | of the registry key])],,) | |
2041 | ||
2042 | case $host_os in | |
2043 | win32 | pe | cygwin* | mingw32*) | |
2044 | if test "x$enable_win32_registry" != xno; then | |
2045 | AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no]) | |
2046 | fi | |
2047 | ||
2048 | if test "x$enable_win32_registry" != xno; then | |
2049 | AC_DEFINE(ENABLE_WIN32_REGISTRY, 1, | |
2050 | [Define to 1 if installation paths should be looked up in the Windows | |
2051 | Registry. Ignored on non-Windows hosts.]) | |
2052 | ||
2053 | if test "x$enable_win32_registry" != xyes \ | |
2054 | && test "x$enable_win32_registry" != x; then | |
2055 | AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry", | |
2056 | [Define to be the last component of the Windows registry key under which | |
2057 | to look for installation paths. The full key used will be | |
2058 | HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}. | |
2059 | The default is the GCC version number.]) | |
2060 | fi | |
2061 | fi | |
2062 | ;; | |
2063 | esac | |
2064 | ||
2065 | # Get an absolute path to the GCC top-level source directory | |
2066 | holddir=`${PWDCMD-pwd}` | |
2067 | cd $srcdir | |
2068 | topdir=`${PWDCMD-pwd}` | |
2069 | cd $holddir | |
2070 | ||
2071 | # Conditionalize the makefile for this host machine. | |
2072 | xmake_file= | |
2073 | for f in ${host_xmake_file} | |
2074 | do | |
2075 | if test -f ${srcdir}/config/$f | |
2076 | then | |
2077 | xmake_file="${xmake_file} \$(srcdir)/config/$f" | |
2078 | fi | |
2079 | done | |
2080 | ||
2081 | # Conditionalize the makefile for this target machine. | |
2082 | tmake_file_= | |
2083 | for f in ${tmake_file} | |
2084 | do | |
2085 | if test -f ${srcdir}/config/$f | |
2086 | then | |
2087 | tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
2088 | fi | |
2089 | done | |
2090 | tmake_file="${tmake_file_}${omp_device_property_tmake_file}" | |
2091 | ||
2092 | out_object_file=`basename $out_file .c`.o | |
2093 | common_out_object_file=`basename $common_out_file .c`.o | |
2094 | ||
2095 | tm_file_list="options.h" | |
2096 | tm_include_list="options.h insn-constants.h" | |
2097 | for f in $tm_file; do | |
2098 | case $f in | |
2099 | ./* ) | |
2100 | f=`echo $f | sed 's/^..//'` | |
2101 | tm_file_list="${tm_file_list} $f" | |
2102 | tm_include_list="${tm_include_list} $f" | |
2103 | ;; | |
2104 | defaults.h ) | |
2105 | tm_file_list="${tm_file_list} \$(srcdir)/$f" | |
2106 | tm_include_list="${tm_include_list} $f" | |
2107 | ;; | |
2108 | * ) | |
2109 | tm_file_list="${tm_file_list} \$(srcdir)/config/$f" | |
2110 | tm_include_list="${tm_include_list} config/$f" | |
2111 | ;; | |
2112 | esac | |
2113 | done | |
2114 | ||
2115 | tm_p_file_list= | |
2116 | tm_p_include_list= | |
2117 | for f in $tm_p_file; do | |
2118 | case $f in | |
2119 | tm-preds.h ) | |
2120 | tm_p_file_list="${tm_p_file_list} $f" | |
2121 | tm_p_include_list="${tm_p_include_list} $f" | |
2122 | ;; | |
2123 | * ) | |
2124 | tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" | |
2125 | tm_p_include_list="${tm_p_include_list} config/$f" | |
2126 | esac | |
2127 | done | |
2128 | ||
2129 | tm_d_file_list= | |
2130 | tm_d_include_list="options.h insn-constants.h" | |
2131 | for f in $tm_d_file; do | |
2132 | case $f in | |
2133 | defaults.h ) | |
2134 | tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f" | |
2135 | tm_d_include_list="${tm_d_include_list} $f" | |
2136 | ;; | |
2137 | * ) | |
2138 | tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f" | |
2139 | tm_d_include_list="${tm_d_include_list} config/$f" | |
2140 | ;; | |
2141 | esac | |
2142 | done | |
2143 | ||
2144 | xm_file_list= | |
2145 | xm_include_list= | |
2146 | for f in $xm_file; do | |
2147 | case $f in | |
2148 | ansidecl.h ) | |
2149 | xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" | |
2150 | xm_include_list="${xm_include_list} $f" | |
2151 | ;; | |
2152 | auto-host.h ) | |
2153 | xm_file_list="${xm_file_list} $f" | |
2154 | xm_include_list="${xm_include_list} $f" | |
2155 | ;; | |
2156 | * ) | |
2157 | xm_file_list="${xm_file_list} \$(srcdir)/config/$f" | |
2158 | xm_include_list="${xm_include_list} config/$f" | |
2159 | ;; | |
2160 | esac | |
2161 | done | |
2162 | ||
2163 | host_xm_file_list= | |
2164 | host_xm_include_list= | |
2165 | for f in $host_xm_file; do | |
2166 | case $f in | |
2167 | ansidecl.h ) | |
2168 | host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" | |
2169 | host_xm_include_list="${host_xm_include_list} $f" | |
2170 | ;; | |
2171 | auto-host.h ) | |
2172 | host_xm_file_list="${host_xm_file_list} $f" | |
2173 | host_xm_include_list="${host_xm_include_list} $f" | |
2174 | ;; | |
2175 | * ) | |
2176 | host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" | |
2177 | host_xm_include_list="${host_xm_include_list} config/$f" | |
2178 | ;; | |
2179 | esac | |
2180 | done | |
2181 | ||
2182 | build_xm_file_list= | |
2183 | for f in $build_xm_file; do | |
2184 | case $f in | |
2185 | ansidecl.h ) | |
2186 | build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f" | |
2187 | build_xm_include_list="${build_xm_include_list} $f" | |
2188 | ;; | |
2189 | auto-build.h | auto-host.h ) | |
2190 | build_xm_file_list="${build_xm_file_list} $f" | |
2191 | build_xm_include_list="${build_xm_include_list} $f" | |
2192 | ;; | |
2193 | * ) | |
2194 | build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" | |
2195 | build_xm_include_list="${build_xm_include_list} config/$f" | |
2196 | ;; | |
2197 | esac | |
2198 | done | |
2199 | ||
2200 | # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a | |
2201 | # cross-compiler which does not use the native headers and libraries. | |
2202 | # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. | |
2203 | CROSS= AC_SUBST(CROSS) | |
2204 | ALL=all.internal AC_SUBST(ALL) | |
2205 | SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) | |
2206 | BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR) | |
2207 | ||
2208 | if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x || | |
2209 | test x$build != x$host || test "x$with_build_sysroot" != x; then | |
2210 | if test "x$with_build_sysroot" != x; then | |
2211 | BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' | |
2212 | else | |
2213 | BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' | |
2214 | fi | |
2215 | ||
2216 | if test x$host != x$target | |
2217 | then | |
2218 | CROSS="-DCROSS_DIRECTORY_STRUCTURE" | |
2219 | ALL=all.cross | |
2220 | SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR | |
2221 | elif test "x$TARGET_SYSTEM_ROOT" != x; then | |
2222 | SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' | |
2223 | fi | |
2224 | ||
2225 | if test "x$with_build_sysroot" != "x"; then | |
2226 | target_header_dir="${with_build_sysroot}${native_system_header_dir}" | |
2227 | elif test "x$with_sysroot" = x; then | |
2228 | target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include" | |
2229 | elif test "x$with_sysroot" = xyes; then | |
2230 | target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}" | |
2231 | else | |
2232 | target_header_dir="${with_sysroot}${native_system_header_dir}" | |
2233 | fi | |
2234 | else | |
2235 | target_header_dir=${native_system_header_dir} | |
2236 | fi | |
2237 | ||
2238 | # If this is a cross-compiler that does not | |
2239 | # have its own set of headers then define | |
2240 | # inhibit_libc | |
2241 | ||
2242 | # If this is using newlib, without having the headers available now, | |
2243 | # then define inhibit_libc in LIBGCC2_CFLAGS. | |
2244 | # This prevents libgcc2 from containing any code which requires libc | |
2245 | # support. | |
2246 | : ${inhibit_libc=false} | |
2247 | if { { test x$host != x$target && test "x$with_sysroot" = x ; } || | |
2248 | test x$with_newlib = xyes ; } && | |
2249 | { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then | |
2250 | inhibit_libc=true | |
2251 | fi | |
2252 | AC_SUBST(inhibit_libc) | |
2253 | ||
2254 | # When building gcc with a cross-compiler, we need to adjust things so | |
2255 | # that the generator programs are still built with the native compiler. | |
2256 | # Also, we cannot run fixincludes. | |
2257 | ||
2258 | # These are the normal (build=host) settings: | |
2259 | CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) | |
2260 | CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD) | |
2261 | BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) | |
2262 | BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS) | |
2263 | BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS) | |
2264 | STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) | |
2265 | ||
2266 | BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS) | |
2267 | BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG) | |
2268 | ||
2269 | # And these apply if build != host, or we are generating coverage data | |
2270 | if test x$build != x$host || test "x$coverage_flags" != x | |
2271 | then | |
2272 | BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' | |
2273 | BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)' | |
2274 | BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)' | |
2275 | ||
2276 | NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}} | |
2277 | NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}} | |
2278 | BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)' | |
2279 | BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)' | |
2280 | fi | |
2281 | AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD) | |
2282 | AC_SUBST(NO_PIE_FLAG_FOR_BUILD) | |
2283 | ||
2284 | # Expand extra_headers to include complete path. | |
2285 | # This substitutes for lots of t-* files. | |
2286 | extra_headers_list= | |
2287 | # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. | |
2288 | for file in ${extra_headers} ; do | |
2289 | extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" | |
2290 | done | |
2291 | ||
2292 | # If use_gcc_tgmath is set, append ginclude/tgmath.h. | |
2293 | if test x"$use_gcc_tgmath" = xyes | |
2294 | then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h" | |
2295 | fi | |
2296 | ||
2297 | # Define collect2 in Makefile. | |
2298 | case $host_can_use_collect2 in | |
2299 | no) collect2= ;; | |
2300 | *) collect2='collect2$(exeext)' ;; | |
2301 | esac | |
2302 | AC_SUBST([collect2]) | |
2303 | ||
2304 | # Add a definition of USE_COLLECT2 if system wants one. | |
2305 | case $use_collect2 in | |
2306 | no) use_collect2= ;; | |
2307 | "") ;; | |
2308 | *) | |
2309 | host_xm_defines="${host_xm_defines} USE_COLLECT2" | |
2310 | xm_defines="${xm_defines} USE_COLLECT2" | |
2311 | case $host_can_use_collect2 in | |
2312 | no) | |
2313 | AC_MSG_ERROR([collect2 is required but cannot be built on this system]) | |
2314 | ;; | |
2315 | esac | |
2316 | ;; | |
2317 | esac | |
2318 | ||
2319 | AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}", | |
2320 | [Define to the name of the LTO plugin DSO that must be | |
2321 | passed to the linker's -plugin=LIB option.]) | |
2322 | ||
2323 | # --------------------------- | |
2324 | # Assembler & linker features | |
2325 | # --------------------------- | |
2326 | ||
2327 | # During stage 2, ld is actually gcc/collect-ld, which is a small script to | |
2328 | # discern between when to use prev-ld/ld-new and when to use ld/ld-new. | |
2329 | # However when ld-new is first executed from the build tree, libtool will | |
2330 | # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers | |
2331 | # to the build tree. While doing this we need to use the previous-stage | |
2332 | # linker, or we have an infinite loop. The presence of a shell script as | |
2333 | # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses | |
2334 | # the gcc/collect-ld script. So we need to know how libtool works, or | |
2335 | # exec-tool will fail. | |
2336 | ||
2337 | m4_defun([_LT_CONFIG_COMMANDS], []) | |
2338 | AC_PROG_LIBTOOL | |
2339 | AC_SUBST(objdir) | |
2340 | AC_SUBST(enable_fast_install) | |
2341 | ||
2342 | # Identify the assembler which will work hand-in-glove with the newly | |
2343 | # built GCC, so that we can examine its features. This is the assembler | |
2344 | # which will be driven by the driver program. | |
2345 | # | |
2346 | # If build != host, and we aren't building gas in-tree, we identify a | |
2347 | # build->target assembler and hope that it will have the same features | |
2348 | # as the host->target assembler we'll be using. | |
2349 | gcc_cv_gas_major_version= | |
2350 | gcc_cv_gas_minor_version= | |
2351 | gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas | |
2352 | ||
2353 | m4_pattern_allow([AS_FOR_TARGET])dnl | |
2354 | AS_VAR_SET_IF(gcc_cv_as,, [ | |
2355 | if test -x "$DEFAULT_ASSEMBLER"; then | |
2356 | gcc_cv_as="$DEFAULT_ASSEMBLER" | |
2357 | elif test -f $gcc_cv_as_gas_srcdir/configure.ac \ | |
2358 | && test -f ../gas/Makefile \ | |
2359 | && test x$build = x$host; then | |
2360 | gcc_cv_as=../gas/as-new$build_exeext | |
2361 | elif test -x as$build_exeext; then | |
2362 | # Build using assembler in the current directory. | |
2363 | gcc_cv_as=./as$build_exeext | |
2364 | elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then | |
2365 | gcc_cv_as="$AS_FOR_TARGET" | |
2366 | else | |
2367 | AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) | |
2368 | fi]) | |
2369 | ||
2370 | ORIGINAL_AS_FOR_TARGET=$gcc_cv_as | |
2371 | AC_SUBST(ORIGINAL_AS_FOR_TARGET) | |
2372 | case "$ORIGINAL_AS_FOR_TARGET" in | |
2373 | ./as | ./as$build_exeext) ;; | |
2374 | *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; | |
2375 | esac | |
2376 | ||
2377 | AC_MSG_CHECKING(what assembler to use) | |
2378 | if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then | |
2379 | # Single tree build which includes gas. We want to prefer it | |
2380 | # over whatever linker top-level may have detected, since | |
2381 | # we'll use what we're building after installation anyway. | |
2382 | AC_MSG_RESULT(newly built gas) | |
2383 | in_tree_gas=yes | |
2384 | _gcc_COMPUTE_GAS_VERSION | |
2385 | in_tree_gas_is_elf=no | |
2386 | if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ | |
2387 | || (grep 'obj_format = multi' ../gas/Makefile \ | |
2388 | && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null | |
2389 | then | |
2390 | in_tree_gas_is_elf=yes | |
2391 | fi | |
2392 | else | |
2393 | AC_MSG_RESULT($gcc_cv_as) | |
2394 | in_tree_gas=no | |
2395 | fi | |
2396 | ||
2397 | default_ld= | |
2398 | AC_ARG_ENABLE(ld, | |
2399 | [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]], | |
2400 | [case "${enableval}" in | |
2401 | no) | |
2402 | default_ld=ld.gold | |
2403 | ;; | |
2404 | esac]) | |
2405 | ||
2406 | install_gold_as_default=no | |
2407 | AC_ARG_ENABLE(gold, | |
2408 | [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], | |
2409 | [case "${enableval}" in | |
2410 | default) | |
2411 | install_gold_as_default=yes | |
2412 | ;; | |
2413 | yes) | |
2414 | if test x${default_ld} != x; then | |
2415 | install_gold_as_default=yes | |
2416 | fi | |
2417 | ;; | |
2418 | no) | |
2419 | ;; | |
2420 | *) | |
2421 | AC_MSG_ERROR([invalid --enable-gold argument]) | |
2422 | ;; | |
2423 | esac]) | |
2424 | ||
2425 | # Identify the linker which will work hand-in-glove with the newly | |
2426 | # built GCC, so that we can examine its features. This is the linker | |
2427 | # which will be driven by the driver program. | |
2428 | # | |
2429 | # If build != host, and we aren't building gas in-tree, we identify a | |
2430 | # build->target linker and hope that it will have the same features | |
2431 | # as the host->target linker we'll be using. | |
2432 | gcc_cv_gld_major_version= | |
2433 | gcc_cv_gld_minor_version= | |
2434 | gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld | |
2435 | gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold | |
2436 | gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd | |
2437 | ||
2438 | AS_VAR_SET_IF(gcc_cv_ld,, [ | |
2439 | if test -x "$DEFAULT_LINKER"; then | |
2440 | gcc_cv_ld="$DEFAULT_LINKER" | |
2441 | elif test $install_gold_as_default = yes \ | |
2442 | && test -f $gcc_cv_ld_gold_srcdir/configure.ac \ | |
2443 | && test -f ../gold/Makefile \ | |
2444 | && test x$build = x$host; then | |
2445 | gcc_cv_ld=../gold/ld-new$build_exeext | |
2446 | elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \ | |
2447 | && test -f ../ld/Makefile \ | |
2448 | && test x$build = x$host; then | |
2449 | gcc_cv_ld=../ld/ld-new$build_exeext | |
2450 | elif test -x collect-ld$build_exeext; then | |
2451 | # Build using linker in the current directory. | |
2452 | gcc_cv_ld=./collect-ld$build_exeext | |
2453 | elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then | |
2454 | gcc_cv_ld="$LD_FOR_TARGET" | |
2455 | else | |
2456 | AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) | |
2457 | fi]) | |
2458 | ||
2459 | ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld | |
2460 | PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"` | |
2461 | # if the PLUGIN_LD is set ld-new, just have it as ld | |
2462 | # as that is the installed named. | |
2463 | if test x$PLUGIN_LD_SUFFIX = xld-new \ | |
2464 | || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then | |
2465 | PLUGIN_LD_SUFFIX=ld | |
2466 | fi | |
2467 | AC_ARG_WITH(plugin-ld, | |
2468 | [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])], | |
2469 | [if test x"$withval" != x; then | |
2470 | ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" | |
2471 | PLUGIN_LD_SUFFIX="$withval" | |
2472 | fi]) | |
2473 | AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) | |
2474 | AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker]) | |
2475 | ||
2476 | # Check to see if we are using gold instead of ld | |
2477 | AC_MSG_CHECKING(whether we are using gold) | |
2478 | ld_is_gold=no | |
2479 | if test x$gcc_cv_ld != x; then | |
2480 | if $gcc_cv_ld --version 2>/dev/null | sed 1q \ | |
2481 | | grep "GNU gold" > /dev/null; then | |
2482 | ld_is_gold=yes | |
2483 | fi | |
2484 | fi | |
2485 | AC_MSG_RESULT($ld_is_gold) | |
2486 | ||
2487 | AC_MSG_CHECKING(gold linker with split stack support as non default) | |
2488 | # Check to see if default ld is not gold, but gold is | |
2489 | # available and has support for split stack. If gcc was configured | |
2490 | # with gold then no checking is done. | |
2491 | # | |
2492 | if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then | |
2493 | ||
2494 | # For platforms other than powerpc64*, enable as appropriate. | |
2495 | ||
2496 | gold_non_default=no | |
2497 | ld_gold=`which ${gcc_cv_ld}.gold` | |
2498 | # Make sure this gold has minimal split stack support | |
2499 | if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then | |
2500 | ld_vers=`$ld_gold --version | sed 1q` | |
2501 | gold_vers=`echo $ld_vers | sed -n \ | |
2502 | -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'` | |
2503 | case $target in | |
2504 | # check that the gold version contains the complete split stack support | |
2505 | # on powerpc64 big and little endian | |
2506 | powerpc64*-*-*) | |
2507 | case "$gold_vers" in | |
2508 | 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes | |
2509 | ;; | |
2510 | *) gold_non_default=no | |
2511 | ;; | |
2512 | esac | |
2513 | ;; | |
2514 | esac | |
2515 | fi | |
2516 | if test $gold_non_default = yes; then | |
2517 | AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1, | |
2518 | [Define if the gold linker supports split stack and is available as a non-default]) | |
2519 | fi | |
2520 | fi | |
2521 | AC_MSG_RESULT($gold_non_default) | |
2522 | ||
2523 | ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld | |
2524 | AC_SUBST(ORIGINAL_LD_FOR_TARGET) | |
2525 | case "$ORIGINAL_LD_FOR_TARGET" in | |
2526 | ./collect-ld | ./collect-ld$build_exeext) ;; | |
2527 | *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; | |
2528 | esac | |
2529 | ||
2530 | AC_MSG_CHECKING(what linker to use) | |
2531 | if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \ | |
2532 | || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then | |
2533 | # Single tree build which includes ld. We want to prefer it | |
2534 | # over whatever linker top-level may have detected, since | |
2535 | # we'll use what we're building after installation anyway. | |
2536 | AC_MSG_RESULT(newly built ld) | |
2537 | in_tree_ld=yes | |
2538 | in_tree_ld_is_elf=no | |
2539 | if (grep 'EMUL = .*elf' ../ld/Makefile \ | |
2540 | || grep 'EMUL = .*linux' ../ld/Makefile \ | |
2541 | || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then | |
2542 | in_tree_ld_is_elf=yes | |
2543 | elif test "$ld_is_gold" = yes; then | |
2544 | in_tree_ld_is_elf=yes | |
2545 | fi | |
2546 | for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in | |
2547 | do | |
2548 | changequote(,)dnl | |
2549 | gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f` | |
2550 | if test x$gcc_cv_gld_version != x; then | |
2551 | break | |
2552 | fi | |
2553 | done | |
2554 | case $gcc_cv_gld_version in | |
2555 | VERSION=[0-9]*) ;; | |
2556 | changequote([,])dnl | |
2557 | *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;; | |
2558 | changequote(,)dnl | |
2559 | esac | |
2560 | gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` | |
2561 | gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` | |
2562 | changequote([,])dnl | |
2563 | ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext | |
2564 | ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext | |
2565 | else | |
2566 | AC_MSG_RESULT($gcc_cv_ld) | |
2567 | in_tree_ld=no | |
2568 | gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext` | |
2569 | ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext | |
2570 | ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext | |
2571 | fi | |
2572 | ||
2573 | AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET) | |
2574 | AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET) | |
2575 | ||
2576 | # Figure out what nm we will be using. | |
2577 | gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils | |
2578 | AS_VAR_SET_IF(gcc_cv_nm,, [ | |
2579 | if test -f $gcc_cv_binutils_srcdir/configure.ac \ | |
2580 | && test -f ../binutils/Makefile \ | |
2581 | && test x$build = x$host; then | |
2582 | gcc_cv_nm=../binutils/nm-new$build_exeext | |
2583 | elif test -x nm$build_exeext; then | |
2584 | gcc_cv_nm=./nm$build_exeext | |
2585 | elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then | |
2586 | gcc_cv_nm="$NM_FOR_TARGET" | |
2587 | else | |
2588 | AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) | |
2589 | fi]) | |
2590 | ||
2591 | AC_MSG_CHECKING(what nm to use) | |
2592 | if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then | |
2593 | # Single tree build which includes binutils. | |
2594 | AC_MSG_RESULT(newly built nm) | |
2595 | in_tree_nm=yes | |
2596 | else | |
2597 | AC_MSG_RESULT($gcc_cv_nm) | |
2598 | in_tree_nm=no | |
2599 | fi | |
2600 | ||
2601 | ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm | |
2602 | AC_SUBST(ORIGINAL_NM_FOR_TARGET) | |
2603 | case "$ORIGINAL_NM_FOR_TARGET" in | |
2604 | ./nm | ./nm$build_exeext) ;; | |
2605 | *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; | |
2606 | esac | |
2607 | ||
2608 | ||
2609 | # Figure out what objdump we will be using. | |
2610 | AS_VAR_SET_IF(gcc_cv_objdump,, [ | |
2611 | if test -f $gcc_cv_binutils_srcdir/configure.ac \ | |
2612 | && test -f ../binutils/Makefile \ | |
2613 | && test x$build = x$host; then | |
2614 | # Single tree build which includes binutils. | |
2615 | gcc_cv_objdump=../binutils/objdump$build_exeext | |
2616 | elif test -x objdump$build_exeext; then | |
2617 | gcc_cv_objdump=./objdump$build_exeext | |
2618 | elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then | |
2619 | gcc_cv_objdump="$OBJDUMP_FOR_TARGET" | |
2620 | else | |
2621 | AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) | |
2622 | fi]) | |
2623 | ||
2624 | AC_MSG_CHECKING(what objdump to use) | |
2625 | if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then | |
2626 | # Single tree build which includes binutils. | |
2627 | AC_MSG_RESULT(newly built objdump) | |
2628 | elif test x$gcc_cv_objdump = x; then | |
2629 | AC_MSG_RESULT(not found) | |
2630 | else | |
2631 | AC_MSG_RESULT($gcc_cv_objdump) | |
2632 | fi | |
2633 | ||
2634 | # Figure out what readelf we will be using. | |
2635 | AS_VAR_SET_IF(gcc_cv_readelf,, [ | |
2636 | if test -f $gcc_cv_binutils_srcdir/configure.ac \ | |
2637 | && test -f ../binutils/Makefile \ | |
2638 | && test x$build = x$host; then | |
2639 | # Single tree build which includes binutils. | |
2640 | gcc_cv_readelf=../binutils/readelf$build_exeext | |
2641 | elif test -x readelf$build_exeext; then | |
2642 | gcc_cv_readelf=./readelf$build_exeext | |
2643 | elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then | |
2644 | gcc_cv_readelf="$READELF_FOR_TARGET" | |
2645 | else | |
2646 | AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET) | |
2647 | fi]) | |
2648 | ||
2649 | AC_MSG_CHECKING(what readelf to use) | |
2650 | if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then | |
2651 | # Single tree build which includes binutils. | |
2652 | AC_MSG_RESULT(newly built readelf) | |
2653 | elif test x$gcc_cv_readelf = x; then | |
2654 | AC_MSG_RESULT(not found) | |
2655 | else | |
2656 | AC_MSG_RESULT($gcc_cv_readelf) | |
2657 | fi | |
2658 | ||
2659 | # Figure out what otool we will be using. | |
2660 | AS_VAR_SET_IF(gcc_cv_otool,, [ | |
2661 | if test -x otool$build_exeext; then | |
2662 | gcc_cv_otool=./otool$build_exeext | |
2663 | elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then | |
2664 | gcc_cv_otool="$OTOOL_FOR_TARGET" | |
2665 | else | |
2666 | AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET) | |
2667 | fi]) | |
2668 | ||
2669 | AC_MSG_CHECKING(what otool to use) | |
2670 | if test x$gcc_cv_otool = x; then | |
2671 | AC_MSG_RESULT(not found) | |
2672 | else | |
2673 | AC_MSG_RESULT($gcc_cv_otool) | |
2674 | fi | |
2675 | ||
2676 | # Figure out what assembler alignment features are present. | |
2677 | gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, | |
2678 | [2,6,0],, | |
2679 | [.balign 4 | |
2680 | .p2align 2],, | |
2681 | [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, | |
2682 | [Define if your assembler supports .balign and .p2align.])]) | |
2683 | ||
2684 | gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, | |
2685 | [2,8,0],, | |
2686 | [.p2align 4,,7],, | |
2687 | [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, | |
2688 | [Define if your assembler supports specifying the maximum number | |
2689 | of bytes to skip when using the GAS .p2align command.])]) | |
2690 | ||
2691 | gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, | |
2692 | [2,8,0],, | |
2693 | [.literal16],, | |
2694 | [AC_DEFINE(HAVE_GAS_LITERAL16, 1, | |
2695 | [Define if your assembler supports .literal16.])]) | |
2696 | ||
2697 | gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, | |
2698 | [elf,2,9,0],, | |
2699 | [conftest_label1: .word 0 | |
2700 | .subsection -1 | |
2701 | conftest_label2: .word 0 | |
2702 | .previous], | |
2703 | [if test x$gcc_cv_nm != x; then | |
2704 | $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 | |
2705 | $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 | |
2706 | if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 | |
2707 | then : | |
2708 | else gcc_cv_as_subsection_m1=yes | |
2709 | fi | |
2710 | rm -f conftest.nm1 conftest.nm2 | |
2711 | fi], | |
2712 | [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, | |
2713 | [Define if your assembler supports .subsection and .subsection -1 starts | |
2714 | emitting at the beginning of your section.])]) | |
2715 | ||
2716 | gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, | |
2717 | [2,2,0],, | |
2718 | [ .weak foobar],, | |
2719 | [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) | |
2720 | ||
2721 | gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, | |
2722 | [2,17,0],, | |
2723 | [ .weakref foobar, barfnot],, | |
2724 | [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) | |
2725 | ||
2726 | gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, | |
2727 | [2,15,91],, | |
2728 | [ .SPACE $TEXT$ | |
2729 | .NSUBSPA $CODE$,COMDAT],, | |
2730 | [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) | |
2731 | ||
2732 | # .hidden needs to be supported in both the assembler and the linker, | |
2733 | # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. | |
2734 | # This is irritatingly difficult to feature test for; we have to check the | |
2735 | # date string after the version number. If we've got an in-tree | |
2736 | # ld, we don't know its patchlevel version, so we set the baseline at 2.13 | |
2737 | # to be safe. | |
2738 | # The gcc_GAS_CHECK_FEATURE call just sets a cache variable. | |
2739 | case "${target}" in | |
2740 | *-*-aix*) | |
2741 | conftest_s=' .globl foobar,hidden' | |
2742 | ;; | |
2743 | *) | |
2744 | conftest_s=' .hidden foobar | |
2745 | foobar:' | |
2746 | ;; | |
2747 | esac | |
2748 | gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, | |
2749 | [elf,2,13,0],, [$conftest_s]) | |
2750 | case "${target}" in | |
2751 | *-*-darwin*) | |
2752 | # Darwin as has some visibility support, though with a different syntax. | |
2753 | gcc_cv_as_hidden=yes | |
2754 | ;; | |
2755 | esac | |
2756 | ||
2757 | # gnu_indirect_function type is an extension proposed at | |
2758 | # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime | |
2759 | # selection of function implementation | |
2760 | AC_ARG_ENABLE(gnu-indirect-function, | |
2761 | [AS_HELP_STRING([--enable-gnu-indirect-function], | |
2762 | [enable the use of the @gnu_indirect_function to glibc systems])], | |
2763 | [case $enable_gnu_indirect_function in | |
2764 | yes | no) ;; | |
2765 | *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. | |
2766 | Valid choices are 'yes' and 'no'.]) ;; | |
2767 | esac], | |
2768 | [enable_gnu_indirect_function="$default_gnu_indirect_function"]) | |
2769 | ||
2770 | gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi` | |
2771 | AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif, | |
2772 | [Define if your system supports gnu indirect functions.]) | |
2773 | ||
2774 | ||
2775 | changequote(,)dnl | |
2776 | if test $in_tree_ld != yes ; then | |
2777 | ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` | |
2778 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
2779 | if test x"$ld_is_gold" = xyes; then | |
2780 | # GNU gold --version looks like this: | |
2781 | # | |
2782 | # GNU gold (GNU Binutils 2.21.51.20110225) 1.11 | |
2783 | # | |
2784 | # We extract the binutils version which is more familiar and specific | |
2785 | # than the gold version. | |
2786 | ld_vers=`echo $ld_ver | sed -n \ | |
2787 | -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` | |
2788 | else | |
2789 | # GNU ld --version looks like this: | |
2790 | # | |
2791 | # GNU ld (GNU Binutils) 2.21.51.20110225 | |
2792 | ld_vers=`echo $ld_ver | sed -n \ | |
2793 | -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` | |
2794 | fi | |
2795 | ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` | |
2796 | ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` | |
2797 | ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` | |
2798 | ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` | |
2799 | else | |
2800 | case "${target}" in | |
2801 | *-*-solaris2*) | |
2802 | # Solaris 2 ld -V output looks like this for a regular version: | |
2803 | # | |
2804 | # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 | |
2805 | # | |
2806 | # but test versions add stuff at the end: | |
2807 | # | |
2808 | # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 | |
2809 | # | |
2810 | # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version | |
2811 | # numbers can be used in ld.so.1 feature checks even if a different | |
2812 | # linker is configured. | |
2813 | ld_ver=`$gcc_cv_ld -V 2>&1` | |
2814 | if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then | |
2815 | ld_vers=`echo $ld_ver | sed -n \ | |
2816 | -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` | |
2817 | ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` | |
2818 | ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` | |
2819 | fi | |
2820 | ;; | |
2821 | esac | |
2822 | fi | |
2823 | fi | |
2824 | changequote([,])dnl | |
2825 | ||
2826 | AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, | |
2827 | [[if test $in_tree_ld = yes ; then | |
2828 | gcc_cv_ld_hidden=no | |
2829 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
2830 | && test $in_tree_ld_is_elf = yes; then | |
2831 | gcc_cv_ld_hidden=yes | |
2832 | fi | |
2833 | else | |
2834 | gcc_cv_ld_hidden=yes | |
2835 | if test x"$ld_is_gold" = xyes; then | |
2836 | : | |
2837 | elif echo "$ld_ver" | grep GNU > /dev/null; then | |
2838 | case "${target}" in | |
2839 | mmix-knuth-mmixware) | |
2840 | # The linker emits by default mmo, not ELF, so "no" is appropriate. | |
2841 | gcc_cv_ld_hidden=no | |
2842 | ;; | |
2843 | esac | |
2844 | if test 0"$ld_date" -lt 20020404; then | |
2845 | if test -n "$ld_date"; then | |
2846 | # If there was date string, but was earlier than 2002-04-04, fail | |
2847 | gcc_cv_ld_hidden=no | |
2848 | elif test -z "$ld_vers"; then | |
2849 | # If there was no date string nor ld version number, something is wrong | |
2850 | gcc_cv_ld_hidden=no | |
2851 | else | |
2852 | test -z "$ld_vers_patch" && ld_vers_patch=0 | |
2853 | if test "$ld_vers_major" -lt 2; then | |
2854 | gcc_cv_ld_hidden=no | |
2855 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then | |
2856 | gcc_cv_ld_hidden="no" | |
2857 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then | |
2858 | gcc_cv_ld_hidden=no | |
2859 | fi | |
2860 | fi | |
2861 | fi | |
2862 | else | |
2863 | case "${target}" in | |
2864 | *-*-aix[789]*) | |
2865 | gcc_cv_ld_hidden=yes | |
2866 | ;; | |
2867 | *-*-darwin*) | |
2868 | # Darwin ld has some visibility support. | |
2869 | gcc_cv_ld_hidden=yes | |
2870 | ;; | |
2871 | hppa64*-*-hpux* | ia64*-*-hpux*) | |
2872 | gcc_cv_ld_hidden=yes | |
2873 | ;; | |
2874 | *-*-solaris2*) | |
2875 | # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but | |
2876 | # .symbolic was only added in Solaris 9 12/02. | |
2877 | gcc_cv_ld_hidden=yes | |
2878 | ;; | |
2879 | *) | |
2880 | gcc_cv_ld_hidden=no | |
2881 | ;; | |
2882 | esac | |
2883 | fi | |
2884 | fi]]) | |
2885 | libgcc_visibility=no | |
2886 | AC_SUBST(libgcc_visibility) | |
2887 | GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) | |
2888 | if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then | |
2889 | libgcc_visibility=yes | |
2890 | AC_DEFINE(HAVE_GAS_HIDDEN, 1, | |
2891 | [Define if your assembler and linker support .hidden.]) | |
2892 | fi | |
2893 | ||
2894 | AC_MSG_CHECKING(linker read-only and read-write section mixing) | |
2895 | gcc_cv_ld_ro_rw_mix=unknown | |
2896 | if test $in_tree_ld = yes ; then | |
2897 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
2898 | && test $in_tree_ld_is_elf = yes; then | |
2899 | gcc_cv_ld_ro_rw_mix=read-write | |
2900 | fi | |
2901 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then | |
2902 | echo '.section myfoosect, "a"' > conftest1.s | |
2903 | echo '.section myfoosect, "aw"' > conftest2.s | |
2904 | echo '.byte 1' >> conftest2.s | |
2905 | echo '.section myfoosect, "a"' > conftest3.s | |
2906 | echo '.byte 0' >> conftest3.s | |
2907 | if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ | |
2908 | && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ | |
2909 | && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ | |
2910 | && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ | |
2911 | conftest2.o conftest3.o > /dev/null 2>&1; then | |
2912 | gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ | |
2913 | | sed -e '/myfoosect/!d' -e N` | |
2914 | if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then | |
2915 | if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then | |
2916 | gcc_cv_ld_ro_rw_mix=read-only | |
2917 | else | |
2918 | gcc_cv_ld_ro_rw_mix=read-write | |
2919 | fi | |
2920 | fi | |
2921 | fi | |
2922 | changequote(,)dnl | |
2923 | rm -f conftest.* conftest[123].* | |
2924 | changequote([,])dnl | |
2925 | fi | |
2926 | if test x$gcc_cv_ld_ro_rw_mix = xread-write; then | |
2927 | AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, | |
2928 | [Define if your linker links a mix of read-only | |
2929 | and read-write sections into a read-write section.]) | |
2930 | fi | |
2931 | AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) | |
2932 | ||
2933 | gcc_AC_INITFINI_ARRAY | |
2934 | ||
2935 | # Check if we have .[us]leb128, and support symbol arithmetic with it. | |
2936 | gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, | |
2937 | [elf,2,11,0],, | |
2938 | [ .data | |
2939 | .uleb128 L2 - L1 | |
2940 | L1: | |
2941 | .uleb128 1280 | |
2942 | .sleb128 -1010 | |
2943 | L2:], | |
2944 | [[# GAS versions before 2.11 do not support uleb128, | |
2945 | # despite appearing to. | |
2946 | # ??? There exists an elf-specific test that will crash | |
2947 | # the assembler. Perhaps it's better to figure out whether | |
2948 | # arbitrary sections are supported and try the test. | |
2949 | as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` | |
2950 | if echo "$as_ver" | grep GNU > /dev/null; then | |
2951 | as_vers=`echo $as_ver | sed -n \ | |
2952 | -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` | |
2953 | as_major=`expr "$as_vers" : '\([0-9]*\)'` | |
2954 | as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` | |
2955 | if test $as_major -eq 2 && test $as_minor -lt 11 | |
2956 | then : | |
2957 | else gcc_cv_as_leb128=yes | |
2958 | fi | |
2959 | fi]], | |
2960 | [AC_DEFINE(HAVE_AS_LEB128, 1, | |
2961 | [Define if your assembler supports .sleb128 and .uleb128.])], | |
2962 | [AC_DEFINE(HAVE_AS_LEB128, 0, | |
2963 | [Define if your assembler supports .sleb128 and .uleb128.])]) | |
2964 | ||
2965 | # Determine if an .eh_frame section is read-only. | |
2966 | gcc_fn_eh_frame_ro () { | |
2967 | $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \ | |
2968 | $gcc_cv_objdump -h conftest.o 2>/dev/null | \ | |
2969 | sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null | |
2970 | } | |
2971 | ||
2972 | # Check if we have assembler support for unwind directives. | |
2973 | gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, | |
2974 | ,, | |
2975 | [ .text | |
2976 | .cfi_startproc | |
2977 | .cfi_offset 0, 0 | |
2978 | .cfi_same_value 1 | |
2979 | .cfi_def_cfa 1, 2 | |
2980 | .cfi_escape 1, 2, 3, 4, 5 | |
2981 | .cfi_endproc], | |
2982 | [case "$target" in | |
2983 | *-*-solaris*) | |
2984 | # If the linker used on Solaris (like Sun ld) isn't capable of merging | |
2985 | # read-only and read-write sections, we need to make sure that the | |
2986 | # assembler used emits read-write .eh_frame sections. | |
2987 | if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then | |
2988 | gcc_cv_as_cfi_directive=yes | |
2989 | elif test "x$gcc_cv_objdump" = x; then | |
2990 | # No objdump, err on the side of caution. | |
2991 | gcc_cv_as_cfi_directive=no | |
2992 | else | |
2993 | if test x$gas = xyes; then | |
2994 | as_32_opt="--32" | |
2995 | as_64_opt="--64" | |
2996 | else | |
2997 | as_32_opt="-m32" | |
2998 | as_64_opt="-m64" | |
2999 | fi | |
3000 | case "$target" in | |
3001 | sparc*-*-solaris2.*) | |
3002 | # On Solaris/SPARC, .eh_frame sections should always be read-write. | |
3003 | if gcc_fn_eh_frame_ro $as_32_opt \ | |
3004 | || gcc_fn_eh_frame_ro $as_64_opt; then | |
3005 | gcc_cv_as_cfi_directive=no | |
3006 | else | |
3007 | gcc_cv_as_cfi_directive=yes | |
3008 | fi | |
3009 | ;; | |
3010 | i?86-*-solaris2.* | x86_64-*-solaris2.*) | |
3011 | # On Solaris/x86, make sure that GCC and assembler agree on using | |
3012 | # read-only .eh_frame sections for 64-bit. | |
3013 | if gcc_fn_eh_frame_ro $as_32_opt; then | |
3014 | gcc_cv_as_cfi_directive=no | |
3015 | elif gcc_fn_eh_frame_ro $as_64_opt; then | |
3016 | gcc_cv_as_cfi_directive=yes | |
3017 | else | |
3018 | gcc_cv_as_cfi_directive=no | |
3019 | fi | |
3020 | ;; | |
3021 | esac | |
3022 | fi | |
3023 | ;; | |
3024 | *-*-*) | |
3025 | gcc_cv_as_cfi_directive=yes | |
3026 | ;; | |
3027 | esac]) | |
3028 | if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then | |
3029 | gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, | |
3030 | ,, | |
3031 | [ .text | |
3032 | .cfi_startproc | |
3033 | .cfi_adjust_cfa_offset 64 | |
3034 | .skip 75040, 0 | |
3035 | .cfi_adjust_cfa_offset 128 | |
3036 | .cfi_endproc], | |
3037 | [[ | |
3038 | if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ | |
3039 | | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then | |
3040 | gcc_cv_as_cfi_advance_working=yes | |
3041 | fi | |
3042 | ]]) | |
3043 | else | |
3044 | # no objdump, err on the side of caution | |
3045 | gcc_cv_as_cfi_advance_working=no | |
3046 | fi | |
3047 | GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) | |
3048 | AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, | |
3049 | [`if test $gcc_cv_as_cfi_directive = yes \ | |
3050 | && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], | |
3051 | [Define 0/1 if your assembler supports CFI directives.]) | |
3052 | ||
3053 | GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) | |
3054 | gcc_GAS_CHECK_FEATURE([cfi personality directive], | |
3055 | gcc_cv_as_cfi_personality_directive, ,, | |
3056 | [ .text | |
3057 | .cfi_startproc | |
3058 | .cfi_personality 0, symbol | |
3059 | .cfi_endproc]) | |
3060 | AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, | |
3061 | [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`], | |
3062 | [Define 0/1 if your assembler supports .cfi_personality.]) | |
3063 | ||
3064 | gcc_GAS_CHECK_FEATURE([cfi sections directive], | |
3065 | gcc_cv_as_cfi_sections_directive, ,, | |
3066 | [ .text | |
3067 | .cfi_sections .debug_frame, .eh_frame | |
3068 | .cfi_startproc | |
3069 | .cfi_endproc], | |
3070 | [case $target_os in | |
3071 | win32 | pe | cygwin* | mingw32*) | |
3072 | # Need to check that we generated the correct relocation for the | |
3073 | # .debug_frame section. This was fixed for binutils 2.21. | |
3074 | gcc_cv_as_cfi_sections_directive=no | |
3075 | if test "x$gcc_cv_objdump" != x; then | |
3076 | if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ | |
3077 | grep secrel > /dev/null; then | |
3078 | gcc_cv_as_cfi_sections_directive=yes | |
3079 | fi | |
3080 | fi | |
3081 | ;; | |
3082 | *) | |
3083 | gcc_cv_as_cfi_sections_directive=yes | |
3084 | ;; | |
3085 | esac]) | |
3086 | GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) | |
3087 | AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, | |
3088 | [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`], | |
3089 | [Define 0/1 if your assembler supports .cfi_sections.]) | |
3090 | ||
3091 | # GAS versions up to and including 2.11.0 may mis-optimize | |
3092 | # .eh_frame data. | |
3093 | gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, | |
3094 | [elf,2,12,0],, | |
3095 | [ .text | |
3096 | .LFB1: | |
3097 | .4byte 0 | |
3098 | .L1: | |
3099 | .4byte 0 | |
3100 | .LFE1: | |
3101 | .section .eh_frame,"aw",@progbits | |
3102 | __FRAME_BEGIN__: | |
3103 | .4byte .LECIE1-.LSCIE1 | |
3104 | .LSCIE1: | |
3105 | .4byte 0x0 | |
3106 | .byte 0x1 | |
3107 | .ascii "z\0" | |
3108 | .byte 0x1 | |
3109 | .byte 0x78 | |
3110 | .byte 0x1a | |
3111 | .byte 0x0 | |
3112 | .byte 0x4 | |
3113 | .4byte 1 | |
3114 | .p2align 1 | |
3115 | .LECIE1: | |
3116 | .LSFDE1: | |
3117 | .4byte .LEFDE1-.LASFDE1 | |
3118 | .LASFDE1: | |
3119 | .4byte .LASFDE1-__FRAME_BEGIN__ | |
3120 | .4byte .LFB1 | |
3121 | .4byte .LFE1-.LFB1 | |
3122 | .byte 0x4 | |
3123 | .4byte .LFE1-.LFB1 | |
3124 | .byte 0x4 | |
3125 | .4byte .L1-.LFB1 | |
3126 | .LEFDE1:], | |
3127 | [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. | |
3128 | cat > conftest.lit <<EOF | |
3129 | 0000 10000000 00000000 017a0001 781a0004 .........z..x... | |
3130 | 0010 01000000 12000000 18000000 00000000 ................ | |
3131 | 0020 08000000 04080000 0044 .........D @&t@ | |
3132 | EOF | |
3133 | cat > conftest.big <<EOF | |
3134 | 0000 00000010 00000000 017a0001 781a0004 .........z..x... | |
3135 | 0010 00000001 00000012 00000018 00000000 ................ | |
3136 | 0020 00000008 04000000 0844 .........D @&t@ | |
3137 | EOF | |
3138 | # If the assembler didn't choke, and we can objdump, | |
3139 | # and we got the correct data, then succeed. | |
3140 | # The text in the here-document typically retains its unix-style line | |
3141 | # endings, while the output of objdump will use host line endings. | |
3142 | # Therefore, use diff -b for the comparisons. | |
3143 | if test x$gcc_cv_objdump != x \ | |
3144 | && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ | |
3145 | | tail -3 > conftest.got \ | |
3146 | && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ | |
3147 | || diff -b conftest.big conftest.got > /dev/null 2>&1; } | |
3148 | then | |
3149 | gcc_cv_as_eh_frame=yes | |
3150 | elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then | |
3151 | gcc_cv_as_eh_frame=buggy | |
3152 | else | |
3153 | # Uh oh, what do we do now? | |
3154 | gcc_cv_as_eh_frame=no | |
3155 | fi]) | |
3156 | ||
3157 | if test $gcc_cv_as_eh_frame = buggy; then | |
3158 | AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, | |
3159 | [Define if your assembler mis-optimizes .eh_frame data.]) | |
3160 | fi | |
3161 | ||
3162 | # Test if the assembler supports the section flag 'e' or #exclude for | |
3163 | # specifying an excluded section. | |
3164 | gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e, | |
3165 | [2,22,51], [--fatal-warnings], | |
3166 | [.section foo1,"e" | |
3167 | .byte 0,0,0,0]) | |
3168 | if test $gcc_cv_as_section_exclude_e = no; then | |
3169 | case "${target}" in | |
3170 | # Solaris as uses #exclude instead. | |
3171 | *-*-solaris2*) | |
3172 | case "${target}" in | |
3173 | sparc*-*-solaris2*) | |
3174 | conftest_s='.section "foo1", #exclude' | |
3175 | ;; | |
3176 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
3177 | conftest_s='.section foo1, #exclude' | |
3178 | ;; | |
3179 | esac | |
3180 | ;; | |
3181 | esac | |
3182 | gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,, | |
3183 | [$conftest_s | |
3184 | .byte 0,0,0,0]) | |
3185 | fi | |
3186 | AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE, | |
3187 | [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`], | |
3188 | [Define if your assembler supports specifying the exclude section flag.]) | |
3189 | ||
3190 | gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, | |
3191 | [elf,2,12,0], [--fatal-warnings], | |
3192 | [.section .rodata.str, "aMS", @progbits, 1]) | |
3193 | if test $gcc_cv_as_shf_merge = no; then | |
3194 | gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, | |
3195 | [elf,2,12,0], [--fatal-warnings], | |
3196 | [.section .rodata.str, "aMS", %progbits, 1]) | |
3197 | fi | |
3198 | AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, | |
3199 | [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], | |
3200 | [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) | |
3201 | ||
3202 | gcc_cv_ld_aligned_shf_merge=yes | |
3203 | case "$target" in | |
3204 | # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for | |
3205 | # alignment > 1. | |
3206 | sparc*-*-solaris2.11*) | |
3207 | if test x"$gnu_ld" = xno \ | |
3208 | && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then | |
3209 | gcc_cv_ld_aligned_shf_merge=no | |
3210 | fi | |
3211 | ;; | |
3212 | esac | |
3213 | AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE, | |
3214 | [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`], | |
3215 | [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.]) | |
3216 | ||
3217 | gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,, | |
3218 | [.stabs "gcc2_compiled.",60,0,0,0],, | |
3219 | [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1, | |
3220 | [Define if your assembler supports .stabs.])]) | |
3221 | ||
3222 | gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)], | |
3223 | gcc_cv_as_comdat_group, | |
3224 | [elf,2,16,0], [--fatal-warnings], | |
3225 | [.section .text,"axG",@progbits,.foo,comdat]) | |
3226 | if test $gcc_cv_as_comdat_group = yes; then | |
3227 | gcc_cv_as_comdat_group_percent=no | |
3228 | gcc_cv_as_comdat_group_group=no | |
3229 | else | |
3230 | gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)], | |
3231 | gcc_cv_as_comdat_group_percent, | |
3232 | [elf,2,16,0], [--fatal-warnings], | |
3233 | [.section .text,"axG",%progbits,.foo,comdat]) | |
3234 | if test $gcc_cv_as_comdat_group_percent = yes; then | |
3235 | gcc_cv_as_comdat_group_group=no | |
3236 | else | |
3237 | case "${target}" in | |
3238 | # Sun as uses a completely different syntax. | |
3239 | *-*-solaris2*) | |
3240 | case "${target}" in | |
3241 | sparc*-*-solaris2*) | |
3242 | conftest_s=' | |
3243 | .group foo,".text%foo",#comdat | |
3244 | .section ".text%foo", #alloc,#execinstr,#progbits | |
3245 | .globl foo | |
3246 | foo: | |
3247 | ' | |
3248 | ;; | |
3249 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
3250 | conftest_s=' | |
3251 | .group foo,.text%foo,#comdat | |
3252 | .section .text%foo, "ax", @progbits | |
3253 | .globl foo | |
3254 | foo: | |
3255 | ' | |
3256 | ;; | |
3257 | esac | |
3258 | gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)], | |
3259 | gcc_cv_as_comdat_group_group, | |
3260 | ,, [$conftest_s]) | |
3261 | ;; | |
3262 | esac | |
3263 | if test -z "${gcc_cv_as_comdat_group_group+set}"; then | |
3264 | gcc_cv_as_comdat_group_group=no | |
3265 | fi | |
3266 | fi | |
3267 | fi | |
3268 | if test x"$ld_is_gold" = xyes; then | |
3269 | comdat_group=yes | |
3270 | elif test $in_tree_ld = yes ; then | |
3271 | comdat_group=no | |
3272 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
3273 | && test $in_tree_ld_is_elf = yes; then | |
3274 | comdat_group=yes | |
3275 | fi | |
3276 | elif echo "$ld_ver" | grep GNU > /dev/null; then | |
3277 | comdat_group=yes | |
3278 | if test 0"$ld_date" -lt 20050308; then | |
3279 | if test -n "$ld_date"; then | |
3280 | # If there was date string, but was earlier than 2005-03-08, fail | |
3281 | comdat_group=no | |
3282 | elif test "$ld_vers_major" -lt 2; then | |
3283 | comdat_group=no | |
3284 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then | |
3285 | comdat_group=no | |
3286 | fi | |
3287 | fi | |
3288 | else | |
3289 | changequote(,)dnl | |
3290 | case "${target}" in | |
3291 | *-*-solaris2.1[1-9]*) | |
3292 | comdat_group=no | |
3293 | # Sun ld has COMDAT group support since Solaris 9, but it doesn't | |
3294 | # interoperate with GNU as until Solaris 11 build 130, i.e. ld | |
3295 | # version 1.688. | |
3296 | # | |
3297 | # If using Sun as for COMDAT group as emitted by GCC, one needs at | |
3298 | # least ld version 1.2267. | |
3299 | if test "$ld_vers_major" -gt 1; then | |
3300 | comdat_group=yes | |
3301 | elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then | |
3302 | comdat_group=yes | |
3303 | elif test "$ld_vers_minor" -ge 2267; then | |
3304 | comdat_group=yes | |
3305 | fi | |
3306 | ;; | |
3307 | *) | |
3308 | # Assume linkers other than GNU ld don't support COMDAT group. | |
3309 | comdat_group=no | |
3310 | ;; | |
3311 | esac | |
3312 | changequote([,])dnl | |
3313 | fi | |
3314 | # Allow overriding the automatic COMDAT group tests above. | |
3315 | AC_ARG_ENABLE(comdat, | |
3316 | [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], | |
3317 | [comdat_group="$enable_comdat"]) | |
3318 | if test $comdat_group = no; then | |
3319 | gcc_cv_as_comdat_group=no | |
3320 | gcc_cv_as_comdat_group_percent=no | |
3321 | gcc_cv_as_comdat_group_group=no | |
3322 | fi | |
3323 | AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, | |
3324 | [`if test $gcc_cv_as_comdat_group = yes \ | |
3325 | || test $gcc_cv_as_comdat_group_percent = yes \ | |
3326 | || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`], | |
3327 | [Define 0/1 if your assembler and linker support COMDAT groups.]) | |
3328 | ||
3329 | # Restrict this test to Solaris/x86: other targets define this statically. | |
3330 | case "${target}" in | |
3331 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
3332 | AC_MSG_CHECKING(support for hidden thunks in linkonce sections) | |
3333 | if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then | |
3334 | hidden_linkonce=yes | |
3335 | else | |
3336 | case "${target}" in | |
3337 | # Full support for hidden thunks in linkonce sections only appeared in | |
3338 | # Solaris 11/OpenSolaris. | |
3339 | *-*-solaris2.1[[1-9]]*) | |
3340 | hidden_linkonce=yes | |
3341 | ;; | |
3342 | *) | |
3343 | hidden_linkonce=no | |
3344 | ;; | |
3345 | esac | |
3346 | fi | |
3347 | AC_MSG_RESULT($hidden_linkonce) | |
3348 | AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE, | |
3349 | [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`], | |
3350 | [Define 0/1 if your linker supports hidden thunks in linkonce sections.]) | |
3351 | ;; | |
3352 | esac | |
3353 | ||
3354 | gcc_GAS_CHECK_FEATURE([line table is_stmt support], | |
3355 | gcc_cv_as_is_stmt, | |
3356 | [2,16,92],, | |
3357 | [ .text | |
3358 | .file 1 "conf.c" | |
3359 | .loc 1 1 0 is_stmt 1],, | |
3360 | [AC_DEFINE(HAVE_GAS_LOC_STMT, 1, | |
3361 | [Define if your assembler supports the .loc is_stmt sub-directive.])]) | |
3362 | ||
3363 | gcc_GAS_CHECK_FEATURE([line table discriminator support], | |
3364 | gcc_cv_as_discriminator, | |
3365 | [2,19,51],, | |
3366 | [ .text | |
3367 | .file 1 "conf.c" | |
3368 | .loc 1 1 0 discriminator 1],, | |
3369 | [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, | |
3370 | [Define if your assembler supports the .loc discriminator sub-directive.])]) | |
3371 | ||
3372 | # Catch the newlib flag of the same name so we can gate GCC features on it. | |
3373 | AC_ARG_ENABLE(newlib-nano-formatted-io, | |
3374 | [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version | |
3375 | formatted IO])], | |
3376 | [case "${enableval}" in | |
3377 | yes|no) | |
3378 | ;; | |
3379 | *) | |
3380 | AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval]) | |
3381 | ;; | |
3382 | esac], []) | |
3383 | ||
3384 | # Thread-local storage - the check is heavily parameterized. | |
3385 | conftest_s= | |
3386 | tls_first_major= | |
3387 | tls_first_minor= | |
3388 | tls_as_opt= | |
3389 | case "$target" in | |
3390 | changequote(,)dnl | |
3391 | alpha*-*-*) | |
3392 | conftest_s=' | |
3393 | .section ".tdata","awT",@progbits | |
3394 | foo: .long 25 | |
3395 | .text | |
3396 | ldq $27,__tls_get_addr($29) !literal!1 | |
3397 | lda $16,foo($29) !tlsgd!1 | |
3398 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3399 | ldq $27,__tls_get_addr($29) !literal!2 | |
3400 | lda $16,foo($29) !tlsldm!2 | |
3401 | jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 | |
3402 | ldq $1,foo($29) !gotdtprel | |
3403 | ldah $2,foo($29) !dtprelhi | |
3404 | lda $3,foo($2) !dtprello | |
3405 | lda $4,foo($29) !dtprel | |
3406 | ldq $1,foo($29) !gottprel | |
3407 | ldah $2,foo($29) !tprelhi | |
3408 | lda $3,foo($2) !tprello | |
3409 | lda $4,foo($29) !tprel' | |
3410 | tls_first_major=2 | |
3411 | tls_first_minor=13 | |
3412 | tls_as_opt=--fatal-warnings | |
3413 | ;; | |
3414 | arc*-*-*) | |
3415 | conftest_s=' | |
3416 | add_s r0,r0, @foo@tpoff' | |
3417 | tls_first_major=2 | |
3418 | tls_first_minor=23 | |
3419 | ;; | |
3420 | cris-*-*|crisv32-*-*) | |
3421 | conftest_s=' | |
3422 | .section ".tdata","awT",@progbits | |
3423 | x: .long 25 | |
3424 | .text | |
3425 | move.d x:IE,$r10 | |
3426 | nop' | |
3427 | tls_first_major=2 | |
3428 | tls_first_minor=20 | |
3429 | tls_as_opt=--fatal-warnings | |
3430 | ;; | |
3431 | frv*-*-*) | |
3432 | conftest_s=' | |
3433 | .section ".tdata","awT",@progbits | |
3434 | x: .long 25 | |
3435 | .text | |
3436 | call #gettlsoff(x)' | |
3437 | tls_first_major=2 | |
3438 | tls_first_minor=14 | |
3439 | ;; | |
3440 | hppa*-*-linux*) | |
3441 | conftest_s=' | |
3442 | t1: .reg %r20 | |
3443 | t2: .reg %r21 | |
3444 | gp: .reg %r19 | |
3445 | .section ".tdata","awT",@progbits | |
3446 | foo: .long 25 | |
3447 | .text | |
3448 | .align 4 | |
3449 | addil LT%foo-$tls_gdidx$,gp | |
3450 | ldo RT%foo-$tls_gdidx$(%r1),%arg0 | |
3451 | b __tls_get_addr | |
3452 | nop | |
3453 | addil LT%foo-$tls_ldidx$,gp | |
3454 | b __tls_get_addr | |
3455 | ldo RT%foo-$tls_ldidx$(%r1),%arg0 | |
3456 | addil LR%foo-$tls_dtpoff$,%ret0 | |
3457 | ldo RR%foo-$tls_dtpoff$(%r1),%t1 | |
3458 | mfctl %cr27,%t1 | |
3459 | addil LT%foo-$tls_ieoff$,gp | |
3460 | ldw RT%foo-$tls_ieoff$(%r1),%t2 | |
3461 | add %t1,%t2,%t3 | |
3462 | mfctl %cr27,%t1 | |
3463 | addil LR%foo-$tls_leoff$,%t1 | |
3464 | ldo RR%foo-$tls_leoff$(%r1),%t2' | |
3465 | tls_first_major=2 | |
3466 | tls_first_minor=15 | |
3467 | tls_as_opt=--fatal-warnings | |
3468 | ;; | |
3469 | arm*-*-*) | |
3470 | conftest_s=' | |
3471 | .section ".tdata","awT",%progbits | |
3472 | foo: .long 25 | |
3473 | .text | |
3474 | .word foo(gottpoff) | |
3475 | .word foo(tpoff) | |
3476 | .word foo(tlsgd) | |
3477 | .word foo(tlsldm) | |
3478 | .word foo(tlsldo)' | |
3479 | tls_first_major=2 | |
3480 | tls_first_minor=17 | |
3481 | ;; | |
3482 | i[34567]86-*-* | x86_64-*-*) | |
3483 | case "$target" in | |
3484 | i[34567]86-*-solaris2.* | x86_64-*-solaris2.*) | |
3485 | on_solaris=yes | |
3486 | ;; | |
3487 | *) | |
3488 | on_solaris=no | |
3489 | ;; | |
3490 | esac | |
3491 | if test x$on_solaris = xyes && test x$gas_flag = xno; then | |
3492 | conftest_s=' | |
3493 | .section .tdata,"awt",@progbits' | |
3494 | tls_first_major=0 | |
3495 | tls_first_minor=0 | |
3496 | tls_section_flag=t | |
3497 | changequote([,])dnl | |
3498 | AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', | |
3499 | [Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) | |
3500 | changequote(,)dnl | |
3501 | else | |
3502 | conftest_s=' | |
3503 | .section ".tdata","awT",@progbits' | |
3504 | tls_first_major=2 | |
3505 | tls_first_minor=14 | |
3506 | tls_section_flag=T | |
3507 | tls_as_opt="--fatal-warnings" | |
3508 | fi | |
3509 | case "$target" in | |
3510 | i[34567]86-*-*) | |
3511 | conftest_s="$conftest_s | |
3512 | foo: .long 25 | |
3513 | .text | |
3514 | movl %gs:0, %eax | |
3515 | leal foo@tlsgd(,%ebx,1), %eax | |
3516 | leal foo@tlsldm(%ebx), %eax | |
3517 | leal foo@dtpoff(%eax), %edx | |
3518 | movl foo@gottpoff(%ebx), %eax | |
3519 | subl foo@gottpoff(%ebx), %eax | |
3520 | addl foo@gotntpoff(%ebx), %eax | |
3521 | movl foo@indntpoff, %eax | |
3522 | movl \$foo@tpoff, %eax | |
3523 | subl \$foo@tpoff, %eax | |
3524 | leal foo@ntpoff(%ecx), %eax" | |
3525 | ;; | |
3526 | x86_64-*-*) | |
3527 | if test x$on_solaris = xyes; then | |
3528 | case $gas_flag in | |
3529 | yes) tls_as_opt="$tls_as_opt --64" ;; | |
3530 | no) tls_as_opt="$tls_as_opt -xarch=amd64" ;; | |
3531 | esac | |
3532 | fi | |
3533 | conftest_s="$conftest_s | |
3534 | foo: .long 25 | |
3535 | .text | |
3536 | movq %fs:0, %rax | |
3537 | leaq foo@tlsgd(%rip), %rdi | |
3538 | leaq foo@tlsld(%rip), %rdi | |
3539 | leaq foo@dtpoff(%rax), %rdx | |
3540 | movq foo@gottpoff(%rip), %rax | |
3541 | movq \$foo@tpoff, %rax" | |
3542 | ;; | |
3543 | esac | |
3544 | ;; | |
3545 | ia64-*-*) | |
3546 | conftest_s=' | |
3547 | .section ".tdata","awT",@progbits | |
3548 | foo: data8 25 | |
3549 | .text | |
3550 | addl r16 = @ltoff(@dtpmod(foo#)), gp | |
3551 | addl r17 = @ltoff(@dtprel(foo#)), gp | |
3552 | addl r18 = @ltoff(@tprel(foo#)), gp | |
3553 | addl r19 = @dtprel(foo#), gp | |
3554 | adds r21 = @dtprel(foo#), r13 | |
3555 | movl r23 = @dtprel(foo#) | |
3556 | addl r20 = @tprel(foo#), gp | |
3557 | adds r22 = @tprel(foo#), r13 | |
3558 | movl r24 = @tprel(foo#)' | |
3559 | tls_first_major=2 | |
3560 | tls_first_minor=13 | |
3561 | tls_as_opt=--fatal-warnings | |
3562 | ;; | |
3563 | microblaze*-*-*) | |
3564 | conftest_s=' | |
3565 | .section .tdata,"awT",@progbits | |
3566 | x: | |
3567 | .word 2 | |
3568 | .text | |
3569 | addik r5,r20,x@TLSGD | |
3570 | addik r5,r20,x@TLSLDM' | |
3571 | tls_first_major=2 | |
3572 | tls_first_minor=20 | |
3573 | tls_as_opt='--fatal-warnings' | |
3574 | ;; | |
3575 | mips*-*-*) | |
3576 | conftest_s=' | |
3577 | .section .tdata,"awT",@progbits | |
3578 | x: | |
3579 | .word 2 | |
3580 | .text | |
3581 | addiu $4, $28, %tlsgd(x) | |
3582 | addiu $4, $28, %tlsldm(x) | |
3583 | lui $4, %dtprel_hi(x) | |
3584 | addiu $4, $4, %dtprel_lo(x) | |
3585 | lw $4, %gottprel(x)($28) | |
3586 | lui $4, %tprel_hi(x) | |
3587 | addiu $4, $4, %tprel_lo(x)' | |
3588 | tls_first_major=2 | |
3589 | tls_first_minor=16 | |
3590 | tls_as_opt='-32 --fatal-warnings' | |
3591 | ;; | |
3592 | m68k-*-*) | |
3593 | conftest_s=' | |
3594 | .section .tdata,"awT",@progbits | |
3595 | x: | |
3596 | .word 2 | |
3597 | .text | |
3598 | foo: | |
3599 | move.l x@TLSGD(%a5),%a0 | |
3600 | move.l x@TLSLDM(%a5),%a0 | |
3601 | move.l x@TLSLDO(%a5),%a0 | |
3602 | move.l x@TLSIE(%a5),%a0 | |
3603 | move.l x@TLSLE(%a5),%a0' | |
3604 | tls_first_major=2 | |
3605 | tls_first_minor=19 | |
3606 | tls_as_opt='--fatal-warnings' | |
3607 | ;; | |
3608 | nios2-*-*) | |
3609 | conftest_s=' | |
3610 | .section ".tdata","awT",@progbits' | |
3611 | tls_first_major=2 | |
3612 | tls_first_minor=23 | |
3613 | tls_as_opt="--fatal-warnings" | |
3614 | ;; | |
3615 | aarch64*-*-*) | |
3616 | conftest_s=' | |
3617 | .section ".tdata","awT",%progbits | |
3618 | foo: .long 25 | |
3619 | .text | |
3620 | adrp x0, :tlsgd:x | |
3621 | add x0, x0, #:tlsgd_lo12:x | |
3622 | bl __tls_get_addr | |
3623 | nop' | |
3624 | tls_first_major=2 | |
3625 | tls_first_minor=20 | |
3626 | tls_as_opt='--fatal-warnings' | |
3627 | ;; | |
3628 | or1k*-*-*) | |
3629 | conftest_s=' | |
3630 | .section ".tdata","awT",@progbits | |
3631 | foo: .long 25 | |
3632 | .text | |
3633 | l.movhi r3, tpoffha(foo) | |
3634 | l.add r3, r3, r10 | |
3635 | l.lwz r4, tpofflo(foo)(r3)' | |
3636 | tls_first_major=2 | |
3637 | tls_first_minor=30 | |
3638 | tls_as_opt=--fatal-warnings | |
3639 | ;; | |
3640 | powerpc-ibm-aix*) | |
3641 | conftest_s=' | |
3642 | .extern __get_tpointer | |
3643 | .toc | |
3644 | LC..1: | |
3645 | .tc a[TC],a[TL]@le | |
3646 | .csect .text[PR] | |
3647 | .tlstest: | |
3648 | lwz 9,LC..1(2) | |
3649 | bla __get_tpointer | |
3650 | lwzx 3,9,3 | |
3651 | .globl a | |
3652 | .csect a[TL],4 | |
3653 | a: | |
3654 | .space 4' | |
3655 | tls_first_major=0 | |
3656 | tls_first_minor=0 | |
3657 | ;; | |
3658 | powerpc64*-*-*) | |
3659 | conftest_s=' | |
3660 | .section ".tdata","awT",@progbits | |
3661 | .align 3 | |
3662 | ld0: .space 8 | |
3663 | ld1: .space 8 | |
3664 | x1: .space 8 | |
3665 | x2: .space 8 | |
3666 | x3: .space 8 | |
3667 | .text | |
3668 | addi 3,2,ld0@got@tlsgd | |
3669 | bl .__tls_get_addr | |
3670 | nop | |
3671 | addi 3,2,ld1@toc | |
3672 | bl .__tls_get_addr | |
3673 | nop | |
3674 | addi 3,2,x1@got@tlsld | |
3675 | bl .__tls_get_addr | |
3676 | nop | |
3677 | addi 9,3,x1@dtprel | |
3678 | bl .__tls_get_addr | |
3679 | nop | |
3680 | addis 9,3,x2@dtprel@ha | |
3681 | addi 9,9,x2@dtprel@l | |
3682 | bl .__tls_get_addr | |
3683 | nop | |
3684 | ld 9,x3@got@dtprel(2) | |
3685 | add 9,9,3 | |
3686 | bl .__tls_get_addr | |
3687 | nop' | |
3688 | tls_first_major=2 | |
3689 | tls_first_minor=14 | |
3690 | tls_as_opt="-a64 --fatal-warnings" | |
3691 | ;; | |
3692 | powerpc*-*-*) | |
3693 | conftest_s=' | |
3694 | .section ".tdata","awT",@progbits | |
3695 | .align 2 | |
3696 | ld0: .space 4 | |
3697 | ld1: .space 4 | |
3698 | x1: .space 4 | |
3699 | x2: .space 4 | |
3700 | x3: .space 4 | |
3701 | .text | |
3702 | addi 3,31,ld0@got@tlsgd | |
3703 | bl __tls_get_addr | |
3704 | addi 3,31,x1@got@tlsld | |
3705 | bl __tls_get_addr | |
3706 | addi 9,3,x1@dtprel | |
3707 | addis 9,3,x2@dtprel@ha | |
3708 | addi 9,9,x2@dtprel@l | |
3709 | lwz 9,x3@got@tprel(31) | |
3710 | add 9,9,x@tls | |
3711 | addi 9,2,x1@tprel | |
3712 | addis 9,2,x2@tprel@ha | |
3713 | addi 9,9,x2@tprel@l' | |
3714 | tls_first_major=2 | |
3715 | tls_first_minor=14 | |
3716 | tls_as_opt="-a32 --fatal-warnings" | |
3717 | ;; | |
3718 | riscv*-*-*) | |
3719 | conftest_s=' | |
3720 | .section .tdata,"awT",@progbits | |
3721 | x: .word 2 | |
3722 | .text | |
3723 | la.tls.gd a0,x | |
3724 | call __tls_get_addr' | |
3725 | tls_first_major=2 | |
3726 | tls_first_minor=21 | |
3727 | tls_as_opt='--fatal-warnings' | |
3728 | ;; | |
3729 | s390-*-*) | |
3730 | conftest_s=' | |
3731 | .section ".tdata","awT",@progbits | |
3732 | foo: .long 25 | |
3733 | .text | |
3734 | .long foo@TLSGD | |
3735 | .long foo@TLSLDM | |
3736 | .long foo@DTPOFF | |
3737 | .long foo@NTPOFF | |
3738 | .long foo@GOTNTPOFF | |
3739 | .long foo@INDNTPOFF | |
3740 | l %r1,foo@GOTNTPOFF(%r12) | |
3741 | l %r1,0(%r1):tls_load:foo | |
3742 | bas %r14,0(%r1,%r13):tls_gdcall:foo | |
3743 | bas %r14,0(%r1,%r13):tls_ldcall:foo' | |
3744 | tls_first_major=2 | |
3745 | tls_first_minor=14 | |
3746 | tls_as_opt="-m31 --fatal-warnings" | |
3747 | ;; | |
3748 | s390x-*-*) | |
3749 | conftest_s=' | |
3750 | .section ".tdata","awT",@progbits | |
3751 | foo: .long 25 | |
3752 | .text | |
3753 | .quad foo@TLSGD | |
3754 | .quad foo@TLSLDM | |
3755 | .quad foo@DTPOFF | |
3756 | .quad foo@NTPOFF | |
3757 | .quad foo@GOTNTPOFF | |
3758 | lg %r1,foo@GOTNTPOFF(%r12) | |
3759 | larl %r1,foo@INDNTPOFF | |
3760 | brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo | |
3761 | brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' | |
3762 | tls_first_major=2 | |
3763 | tls_first_minor=14 | |
3764 | tls_as_opt="-m64 -Aesame --fatal-warnings" | |
3765 | ;; | |
3766 | sh-*-* | sh[123456789lbe]*-*-*) | |
3767 | conftest_s=' | |
3768 | .section ".tdata","awT",@progbits | |
3769 | foo: .long 25 | |
3770 | .text | |
3771 | .long foo@TLSGD | |
3772 | .long foo@TLSLDM | |
3773 | .long foo@DTPOFF | |
3774 | .long foo@GOTTPOFF | |
3775 | .long foo@TPOFF' | |
3776 | tls_first_major=2 | |
3777 | tls_first_minor=13 | |
3778 | tls_as_opt=--fatal-warnings | |
3779 | ;; | |
3780 | sparc*-*-*) | |
3781 | case "$target" in | |
3782 | sparc*-sun-solaris2.*) | |
3783 | on_solaris=yes | |
3784 | ;; | |
3785 | *) | |
3786 | on_solaris=no | |
3787 | ;; | |
3788 | esac | |
3789 | if test x$on_solaris = xyes && test x$gas_flag = xno; then | |
3790 | conftest_s=' | |
3791 | .section ".tdata",#alloc,#write,#tls' | |
3792 | tls_first_major=0 | |
3793 | tls_first_minor=0 | |
3794 | else | |
3795 | conftest_s=' | |
3796 | .section ".tdata","awT",@progbits' | |
3797 | tls_first_major=2 | |
3798 | tls_first_minor=14 | |
3799 | tls_as_opt="-32 --fatal-warnings" | |
3800 | fi | |
3801 | conftest_s="$conftest_s | |
3802 | foo: .long 25 | |
3803 | .text | |
3804 | sethi %tgd_hi22(foo), %o0 | |
3805 | add %o0, %tgd_lo10(foo), %o1 | |
3806 | add %l7, %o1, %o0, %tgd_add(foo) | |
3807 | call __tls_get_addr, %tgd_call(foo) | |
3808 | sethi %tldm_hi22(foo), %l1 | |
3809 | add %l1, %tldm_lo10(foo), %l2 | |
3810 | add %l7, %l2, %o0, %tldm_add(foo) | |
3811 | call __tls_get_addr, %tldm_call(foo) | |
3812 | sethi %tldo_hix22(foo), %l3 | |
3813 | xor %l3, %tldo_lox10(foo), %l4 | |
3814 | add %o0, %l4, %l5, %tldo_add(foo) | |
3815 | sethi %tie_hi22(foo), %o3 | |
3816 | add %o3, %tie_lo10(foo), %o3 | |
3817 | ld [%l7 + %o3], %o2, %tie_ld(foo) | |
3818 | add %g7, %o2, %o4, %tie_add(foo) | |
3819 | sethi %tle_hix22(foo), %l1 | |
3820 | xor %l1, %tle_lox10(foo), %o5 | |
3821 | ld [%g7 + %o5], %o1" | |
3822 | ;; | |
3823 | tilepro*-*-*) | |
3824 | conftest_s=' | |
3825 | .section ".tdata","awT",@progbits | |
3826 | foo: .long 25 | |
3827 | .text | |
3828 | addli r0, zero, tls_gd(foo) | |
3829 | auli r0, zero, tls_gd_ha16(foo) | |
3830 | addli r0, r0, tls_gd_lo16(foo) | |
3831 | jal __tls_get_addr | |
3832 | addli r0, zero, tls_ie(foo) | |
3833 | auli r0, r0, tls_ie_ha16(foo) | |
3834 | addli r0, r0, tls_ie_lo16(foo)' | |
3835 | tls_first_major=2 | |
3836 | tls_first_minor=22 | |
3837 | tls_as_opt="--fatal-warnings" | |
3838 | ;; | |
3839 | tilegx*-*-*) | |
3840 | conftest_s=' | |
3841 | .section ".tdata","awT",@progbits | |
3842 | foo: .long 25 | |
3843 | .text | |
3844 | shl16insli r0, zero, hw0_last_tls_gd(foo) | |
3845 | shl16insli r0, zero, hw1_last_tls_gd(foo) | |
3846 | shl16insli r0, r0, hw0_tls_gd(foo) | |
3847 | jal __tls_get_addr | |
3848 | shl16insli r0, zero, hw1_last_tls_ie(foo) | |
3849 | shl16insli r0, r0, hw0_tls_ie(foo)' | |
3850 | tls_first_major=2 | |
3851 | tls_first_minor=22 | |
3852 | tls_as_opt="--fatal-warnings" | |
3853 | ;; | |
3854 | xtensa*-*-*) | |
3855 | conftest_s=' | |
3856 | .section ".tdata","awT",@progbits | |
3857 | foo: .long 25 | |
3858 | .text | |
3859 | movi a8, foo@TLSFUNC | |
3860 | movi a10, foo@TLSARG | |
3861 | callx8.tls a8, foo@TLSCALL' | |
3862 | tls_first_major=2 | |
3863 | tls_first_minor=19 | |
3864 | ;; | |
3865 | changequote([,])dnl | |
3866 | esac | |
3867 | set_have_as_tls=no | |
3868 | if test "x$enable_tls" = xno ; then | |
3869 | : # TLS explicitly disabled. | |
3870 | elif test "x$enable_tls" = xyes ; then | |
3871 | set_have_as_tls=yes # TLS explicitly enabled. | |
3872 | elif test -z "$tls_first_major"; then | |
3873 | : # If we don't have a check, assume no support. | |
3874 | else | |
3875 | gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, | |
3876 | [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, | |
3877 | [set_have_as_tls=yes]) | |
3878 | fi | |
3879 | if test $set_have_as_tls = yes ; then | |
3880 | AC_DEFINE(HAVE_AS_TLS, 1, | |
3881 | [Define if your assembler and linker support thread-local storage.]) | |
3882 | fi | |
3883 | ||
3884 | # Target-specific assembler checks. | |
3885 | ||
3886 | AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) | |
3887 | gcc_cv_ld_static_dynamic=no | |
3888 | gcc_cv_ld_static_option='-Bstatic' | |
3889 | gcc_cv_ld_dynamic_option='-Bdynamic' | |
3890 | if test $in_tree_ld = yes ; then | |
3891 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then | |
3892 | gcc_cv_ld_static_dynamic=yes | |
3893 | fi | |
3894 | elif test x$gcc_cv_ld != x; then | |
3895 | # Check if linker supports -Bstatic/-Bdynamic option | |
3896 | if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \ | |
3897 | && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then | |
3898 | gcc_cv_ld_static_dynamic=yes | |
3899 | else | |
3900 | case "$target" in | |
3901 | # AIX ld uses -b flags | |
3902 | *-*-aix4.[[23]]* | *-*-aix[[5-9]]*) | |
3903 | gcc_cv_ld_static_dynamic=yes | |
3904 | gcc_cv_ld_static_option="-bstatic" | |
3905 | gcc_cv_ld_dynamic_option="-bdynamic" | |
3906 | ;; | |
3907 | # HP-UX ld uses -a flags to select between shared and archive. | |
3908 | *-*-hpux*) | |
3909 | if test x"$gnu_ld" = xno; then | |
3910 | gcc_cv_ld_static_dynamic=yes | |
3911 | gcc_cv_ld_static_option="-aarchive_shared" | |
3912 | gcc_cv_ld_dynamic_option="-adefault" | |
3913 | fi | |
3914 | ;; | |
3915 | # Solaris 2 ld always supports -Bstatic/-Bdynamic. | |
3916 | *-*-solaris2*) | |
3917 | gcc_cv_ld_static_dynamic=yes | |
3918 | ;; | |
3919 | esac | |
3920 | fi | |
3921 | fi | |
3922 | if test x"$gcc_cv_ld_static_dynamic" = xyes; then | |
3923 | AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, | |
3924 | [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) | |
3925 | AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", | |
3926 | [Define to the linker option to disable use of shared objects.]) | |
3927 | AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", | |
3928 | [Define to the linker option to enable use of shared objects.]) | |
3929 | fi | |
3930 | AC_MSG_RESULT($gcc_cv_ld_static_dynamic) | |
3931 | ||
3932 | AC_MSG_CHECKING(linker --version-script option) | |
3933 | gcc_cv_ld_version_script=no | |
3934 | ld_version_script_option='' | |
3935 | if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then | |
3936 | gcc_cv_ld_version_script=yes | |
3937 | ld_version_script_option='--version-script' | |
3938 | elif test x$gcc_cv_ld != x; then | |
3939 | case "$target" in | |
3940 | # Solaris 2 ld always supports -M. It also supports a subset of | |
3941 | # --version-script since Solaris 11.4, but requires | |
3942 | # -z gnu-version-script-compat to activate. | |
3943 | *-*-solaris2*) | |
3944 | gcc_cv_ld_version_script=yes | |
3945 | ld_version_script_option='-M' | |
3946 | ;; | |
3947 | esac | |
3948 | fi | |
3949 | # Don't AC_DEFINE result, only used in jit/Make-lang.in so far. | |
3950 | AC_MSG_RESULT($gcc_cv_ld_version_script) | |
3951 | AC_SUBST(ld_version_script_option) | |
3952 | ||
3953 | AC_MSG_CHECKING(linker soname option) | |
3954 | gcc_cv_ld_soname=no | |
3955 | if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then | |
3956 | gcc_cv_ld_soname=yes | |
3957 | ld_soname_option='-soname' | |
3958 | elif test x$gcc_cv_ld != x; then | |
3959 | case "$target" in | |
3960 | *-*-darwin*) | |
3961 | gcc_cv_ld_soname=yes | |
3962 | ld_soname_option='-install_name' | |
3963 | ;; | |
3964 | # Solaris 2 ld always supports -h. It also supports --soname for GNU | |
3965 | # ld compatiblity since some Solaris 10 update. | |
3966 | *-*-solaris2*) | |
3967 | gcc_cv_ld_soname=yes | |
3968 | ld_soname_option='-h' | |
3969 | ;; | |
3970 | esac | |
3971 | fi | |
3972 | # Don't AC_DEFINE result, only used in jit/Make-lang.in so far. | |
3973 | AC_MSG_RESULT($gcc_cv_ld_soname) | |
3974 | AC_SUBST(ld_soname_option) | |
3975 | ||
3976 | if test x"$demangler_in_ld" = xyes; then | |
3977 | AC_MSG_CHECKING(linker --demangle support) | |
3978 | gcc_cv_ld_demangle=no | |
3979 | if test $in_tree_ld = yes; then | |
3980 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ | |
3981 | gcc_cv_ld_demangle=yes | |
3982 | fi | |
3983 | elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then | |
3984 | # Check if the GNU linker supports --demangle option | |
3985 | if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then | |
3986 | gcc_cv_ld_demangle=yes | |
3987 | fi | |
3988 | fi | |
3989 | if test x"$gcc_cv_ld_demangle" = xyes; then | |
3990 | AC_DEFINE(HAVE_LD_DEMANGLE, 1, | |
3991 | [Define if your linker supports --demangle option.]) | |
3992 | fi | |
3993 | AC_MSG_RESULT($gcc_cv_ld_demangle) | |
3994 | fi | |
3995 | ||
3996 | AC_MSG_CHECKING(linker plugin support) | |
3997 | gcc_cv_lto_plugin=0 | |
3998 | if test -f liblto_plugin.la; then | |
3999 | save_ld_ver="$ld_ver" | |
4000 | save_ld_vers_major="$ld_vers_major" | |
4001 | save_ld_vers_minor="$ld_vers_minor" | |
4002 | save_ld_is_gold="$ld_is_gold" | |
4003 | ||
4004 | ld_is_gold=no | |
4005 | ||
4006 | if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then | |
4007 | ld_ver="GNU ld" | |
4008 | # FIXME: ld_is_gold? | |
4009 | ld_vers_major="$gcc_cv_gld_major_version" | |
4010 | ld_vers_minor="$gcc_cv_gld_minor_version" | |
4011 | else | |
4012 | # Determine plugin linker version. | |
4013 | # FIXME: Partial duplicate from above, generalize. | |
4014 | changequote(,)dnl | |
4015 | ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q` | |
4016 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
4017 | if echo "$ld_ver" | grep "GNU gold" > /dev/null; then | |
4018 | ld_is_gold=yes | |
4019 | ld_vers=`echo $ld_ver | sed -n \ | |
4020 | -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` | |
4021 | else | |
4022 | ld_vers=`echo $ld_ver | sed -n \ | |
4023 | -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` | |
4024 | fi | |
4025 | ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` | |
4026 | ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` | |
4027 | fi | |
4028 | changequote([,])dnl | |
4029 | fi | |
4030 | ||
4031 | # Determine plugin support. | |
4032 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
4033 | # Require GNU ld or gold 2.21+ for plugin support by default. | |
4034 | if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then | |
4035 | gcc_cv_lto_plugin=2 | |
4036 | # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20. | |
4037 | elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then | |
4038 | gcc_cv_lto_plugin=1 | |
4039 | fi | |
4040 | fi | |
4041 | ||
4042 | ld_ver="$save_ld_ver" | |
4043 | ld_vers_major="$save_ld_vers_major" | |
4044 | ld_vers_minor="$save_ld_vers_minor" | |
4045 | ld_is_gold="$save_ld_is_gold" | |
4046 | fi | |
4047 | AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin, | |
4048 | [Define to the level of your linker's plugin support.]) | |
4049 | AC_MSG_RESULT($gcc_cv_lto_plugin) | |
4050 | ||
4051 | # Target OS-specific assembler checks. | |
4052 | ||
4053 | case "$target_os" in | |
4054 | darwin*) | |
4055 | gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option], | |
4056 | gcc_cv_as_mmacosx_version_min,, | |
4057 | [-mmacosx-version-min=10.1], [.text],, | |
4058 | [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1, | |
4059 | [Define if your Mac OS X assembler supports the -mmacos-version-min option.])]) | |
4060 | ;; | |
4061 | esac | |
4062 | ||
4063 | # Target CPU-specific assembler checks. | |
4064 | ||
4065 | case "$target" in | |
4066 | aarch64*-*-*) | |
4067 | gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,, | |
4068 | [-mabi=lp64], [.text],,,) | |
4069 | if test x$gcc_cv_as_aarch64_mabi = xyes; then | |
4070 | AC_DEFINE(HAVE_AS_MABI_OPTION, 1, | |
4071 | [Define if your assembler supports the -mabi option.]) | |
4072 | else | |
4073 | if test x$with_abi = xilp32; then | |
4074 | AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ | |
4075 | Upgrade the Assembler.]) | |
4076 | fi | |
4077 | if test x"$with_multilib_list" = xdefault; then | |
4078 | TM_MULTILIB_CONFIG=lp64 | |
4079 | else | |
4080 | aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'` | |
4081 | for aarch64_multilib in ${aarch64_multilibs}; do | |
4082 | case ${aarch64_multilib} in | |
4083 | ilp32) | |
4084 | AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ | |
4085 | Upgrade the Assembler.]) | |
4086 | ;; | |
4087 | *) | |
4088 | ;; | |
4089 | esac | |
4090 | done | |
4091 | fi | |
4092 | fi | |
4093 | # Check if we have binutils support for relocations types needed by -fpic | |
4094 | gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,, | |
4095 | [ | |
4096 | .text | |
4097 | ldr x0, [[x2, #:gotpage_lo15:globalsym]] | |
4098 | ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, | |
4099 | [Define if your assembler supports relocs needed by -fpic.])]) | |
4100 | # Enable Branch Target Identification Mechanism and Return Address | |
4101 | # Signing by default. | |
4102 | AC_ARG_ENABLE(standard-branch-protection, | |
4103 | [ | |
4104 | AS_HELP_STRING([--enable-standard-branch-protection], | |
4105 | [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) | |
4106 | AS_HELP_STRING([--disable-standard-branch-protection], | |
4107 | [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) | |
4108 | ], | |
4109 | [ | |
4110 | case $enableval in | |
4111 | yes) | |
4112 | tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1" | |
4113 | ;; | |
4114 | no) | |
4115 | ;; | |
4116 | *) | |
4117 | AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\ | |
4118 | Valid choices are 'yes' and 'no'.]) | |
4119 | ;; | |
4120 | esac | |
4121 | ], | |
4122 | []) | |
4123 | # Enable default workaround for AArch64 Cortex-A53 erratum 835769. | |
4124 | AC_ARG_ENABLE(fix-cortex-a53-835769, | |
4125 | [ | |
4126 | AS_HELP_STRING([--enable-fix-cortex-a53-835769], | |
4127 | [enable workaround for AArch64 Cortex-A53 erratum 835769 by default]) | |
4128 | AS_HELP_STRING([--disable-fix-cortex-a53-835769], | |
4129 | [disable workaround for AArch64 Cortex-A53 erratum 835769 by default]) | |
4130 | ], | |
4131 | [ | |
4132 | case $enableval in | |
4133 | yes) | |
4134 | tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1" | |
4135 | ;; | |
4136 | no) | |
4137 | ;; | |
4138 | *) | |
4139 | AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\ | |
4140 | Valid choices are 'yes' and 'no'.]) | |
4141 | ;; | |
4142 | ||
4143 | esac | |
4144 | ], | |
4145 | []) | |
4146 | # Enable default workaround for AArch64 Cortex-A53 erratum 843419. | |
4147 | AC_ARG_ENABLE(fix-cortex-a53-843419, | |
4148 | [ | |
4149 | AS_HELP_STRING([--enable-fix-cortex-a53-843419], | |
4150 | [enable workaround for AArch64 Cortex-A53 erratum 843419 by default]) | |
4151 | AS_HELP_STRING([--disable-fix-cortex-a53-843419], | |
4152 | [disable workaround for AArch64 Cortex-A53 erratum 843419 by default]) | |
4153 | ], | |
4154 | [ | |
4155 | case $enableval in | |
4156 | yes) | |
4157 | tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1" | |
4158 | ;; | |
4159 | no) | |
4160 | ;; | |
4161 | *) | |
4162 | AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\ | |
4163 | Valid choices are 'yes' and 'no'.]) | |
4164 | ;; | |
4165 | ||
4166 | esac | |
4167 | ], | |
4168 | []) | |
4169 | ;; | |
4170 | ||
4171 | # All TARGET_ABI_OSF targets. | |
4172 | alpha*-*-linux* | alpha*-*-*bsd*) | |
4173 | gcc_GAS_CHECK_FEATURE([explicit relocation support], | |
4174 | gcc_cv_as_alpha_explicit_relocs, [2,12,0],, | |
4175 | [ .set nomacro | |
4176 | .text | |
4177 | extbl $3, $2, $3 !lituse_bytoff!1 | |
4178 | ldq $2, a($29) !literal!1 | |
4179 | ldq $4, b($29) !literal!2 | |
4180 | ldq_u $3, 0($2) !lituse_base!1 | |
4181 | ldq $27, f($29) !literal!5 | |
4182 | jsr $26, ($27), f !lituse_jsr!5 | |
4183 | ldah $29, 0($26) !gpdisp!3 | |
4184 | lda $0, c($29) !gprel | |
4185 | ldah $1, d($29) !gprelhigh | |
4186 | lda $1, d($1) !gprellow | |
4187 | lda $29, 0($29) !gpdisp!3],, | |
4188 | [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, | |
4189 | [Define if your assembler supports explicit relocations.])]) | |
4190 | gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], | |
4191 | gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, | |
4192 | [ .set nomacro | |
4193 | .text | |
4194 | ldq $27, a($29) !literal!1 | |
4195 | jsr $26, ($27), a !lituse_jsrdirect!1],, | |
4196 | [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, | |
4197 | [Define if your assembler supports the lituse_jsrdirect relocation.])]) | |
4198 | ;; | |
4199 | ||
4200 | avr-*-*) | |
4201 | gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,, | |
4202 | [--mlink-relax], [.text],, | |
4203 | [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1, | |
4204 | [Define if your avr assembler supports --mlink-relax option.])]) | |
4205 | ||
4206 | gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, | |
4207 | [-mrmw], [.text],, | |
4208 | [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, | |
4209 | [Define if your avr assembler supports -mrmw option.])]) | |
4210 | ||
4211 | gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction], | |
4212 | gcc_cv_as_avr_mgccisr,, | |
4213 | [-mgcc-isr], [.text | |
4214 | __gcc_isr 1 | |
4215 | __gcc_isr 2 | |
4216 | __gcc_isr 0,r24 | |
4217 | ],, | |
4218 | [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1, | |
4219 | [Define if your avr assembler supports -mgcc-isr option.])]) | |
4220 | ||
4221 | # Check how default linker description file implements .rodata for | |
4222 | # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to | |
4223 | # RAM so avr-gcc skips __do_copy_data for .rodata objects. | |
4224 | AC_MSG_CHECKING(binutils for avrxmega3 .rodata support) | |
4225 | cat > conftest.s <<EOF | |
4226 | .section .rodata,"a",@progbits | |
4227 | .global xxvaryy | |
4228 | ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy". | |
4229 | xxvaryy: | |
4230 | .word 1 | |
4231 | EOF | |
4232 | rm -f conftest.nm | |
4233 | AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o]) | |
4234 | AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf]) | |
4235 | AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm]) | |
4236 | if test -s conftest.nm | |
4237 | then | |
4238 | if grep ' R xxvaryy' conftest.nm > /dev/null; then | |
4239 | AC_MSG_RESULT(yes) | |
4240 | AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1, | |
4241 | [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.]) | |
4242 | else | |
4243 | AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM) | |
4244 | echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD | |
4245 | cat conftest.nm >&AS_MESSAGE_LOG_FD | |
4246 | avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`" | |
4247 | AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]]) | |
4248 | fi | |
4249 | else | |
4250 | AC_MSG_RESULT(test failed) | |
4251 | echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD | |
4252 | cat conftest.s >&AS_MESSAGE_LOG_FD | |
4253 | AC_MSG_WARN([[see `config.log' for details]]) | |
4254 | fi | |
4255 | rm -f conftest.s conftest.o conftest.elf conftest.nm | |
4256 | ;; | |
4257 | ||
4258 | cris-*-*) | |
4259 | gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], | |
4260 | gcc_cv_as_cris_no_mul_bug,[2,15,91], | |
4261 | [-no-mul-bug-abort], [.text],, | |
4262 | [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, | |
4263 | [Define if your assembler supports the -no-mul-bug-abort option.])]) | |
4264 | ;; | |
4265 | ||
4266 | sparc*-*-*) | |
4267 | gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, | |
4268 | [-relax], [.text],, | |
4269 | [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, | |
4270 | [Define if your assembler supports -relax option.])]) | |
4271 | ||
4272 | gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], | |
4273 | gcc_cv_as_sparc_gotdata_op,, | |
4274 | [-K PIC], | |
4275 | [.text | |
4276 | .align 4 | |
4277 | foo: | |
4278 | nop | |
4279 | bar: | |
4280 | sethi %gdop_hix22(foo), %g1 | |
4281 | xor %g1, %gdop_lox10(foo), %g1 | |
4282 | ld [[%l7 + %g1]], %g2, %gdop(foo)], | |
4283 | [if test x$gcc_cv_ld != x \ | |
4284 | && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then | |
4285 | if test x$gcc_cv_objdump != x; then | |
4286 | if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ | |
4287 | | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then | |
4288 | gcc_cv_as_sparc_gotdata_op=no | |
4289 | else | |
4290 | gcc_cv_as_sparc_gotdata_op=yes | |
4291 | fi | |
4292 | fi | |
4293 | fi | |
4294 | rm -f conftest], | |
4295 | [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, | |
4296 | [Define if your assembler and linker support GOTDATA_OP relocs.])]) | |
4297 | ||
4298 | gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], | |
4299 | gcc_cv_as_sparc_ua_pcrel,, | |
4300 | [-K PIC], | |
4301 | [.text | |
4302 | foo: | |
4303 | nop | |
4304 | .data | |
4305 | .align 4 | |
4306 | .byte 0 | |
4307 | .uaword %r_disp32(foo)], | |
4308 | [if test x$gcc_cv_ld != x \ | |
4309 | && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then | |
4310 | gcc_cv_as_sparc_ua_pcrel=yes | |
4311 | fi | |
4312 | rm -f conftest], | |
4313 | [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, | |
4314 | [Define if your assembler and linker support unaligned PC relative relocs.]) | |
4315 | ||
4316 | gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], | |
4317 | gcc_cv_as_sparc_ua_pcrel_hidden,, | |
4318 | [-K PIC], | |
4319 | [.data | |
4320 | .align 4 | |
4321 | .byte 0x31 | |
4322 | .uaword %r_disp32(foo) | |
4323 | .byte 0x32, 0x33, 0x34 | |
4324 | .global foo | |
4325 | .hidden foo | |
4326 | foo: | |
4327 | .skip 4], | |
4328 | [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ | |
4329 | && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ | |
4330 | && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ | |
4331 | | grep ' 31000000 07323334' > /dev/null 2>&1; then | |
4332 | if $gcc_cv_objdump -R conftest 2> /dev/null \ | |
4333 | | grep 'DISP32' > /dev/null 2>&1; then | |
4334 | : | |
4335 | else | |
4336 | gcc_cv_as_sparc_ua_pcrel_hidden=yes | |
4337 | fi | |
4338 | fi | |
4339 | rm -f conftest], | |
4340 | [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, | |
4341 | [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) | |
4342 | ]) # unaligned pcrel relocs | |
4343 | ||
4344 | gcc_GAS_CHECK_FEATURE([offsetable %lo()], | |
4345 | gcc_cv_as_sparc_offsetable_lo10,, | |
4346 | [-xarch=v9], | |
4347 | [.text | |
4348 | or %g1, %lo(ab) + 12, %g1 | |
4349 | or %g1, %lo(ab + 12), %g1], | |
4350 | [if test x$gcc_cv_objdump != x \ | |
4351 | && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ | |
4352 | | grep ' 82106000 82106000' > /dev/null 2>&1; then | |
4353 | gcc_cv_as_sparc_offsetable_lo10=yes | |
4354 | fi], | |
4355 | [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, | |
4356 | [Define if your assembler supports offsetable %lo().])]) | |
4357 | ||
4358 | gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions], | |
4359 | gcc_cv_as_sparc_fmaf,, | |
4360 | [-xarch=v9d], | |
4361 | [.text | |
4362 | .register %g2, #scratch | |
4363 | .register %g3, #scratch | |
4364 | .align 4 | |
4365 | fmaddd %f0, %f2, %f4, %f6 | |
4366 | addxccc %g1, %g2, %g3 | |
4367 | fsrl32 %f2, %f4, %f8 | |
4368 | fnaddd %f10, %f12, %f14],, | |
4369 | [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1, | |
4370 | [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])]) | |
4371 | ||
4372 | gcc_GAS_CHECK_FEATURE([SPARC4 instructions], | |
4373 | gcc_cv_as_sparc_sparc4,, | |
4374 | [-xarch=sparc4], | |
4375 | [.text | |
4376 | .register %g2, #scratch | |
4377 | .register %g3, #scratch | |
4378 | .align 4 | |
4379 | cxbe %g2, %g3, 1f | |
4380 | 1: cwbneg %g2, %g3, 1f | |
4381 | 1: sha1 | |
4382 | md5 | |
4383 | aes_kexpand0 %f4, %f6, %f8 | |
4384 | des_round %f38, %f40, %f42, %f44 | |
4385 | camellia_f %f54, %f56, %f58, %f60 | |
4386 | kasumi_fi_xor %f46, %f48, %f50, %f52],, | |
4387 | [AC_DEFINE(HAVE_AS_SPARC4, 1, | |
4388 | [Define if your assembler supports SPARC4 instructions.])]) | |
4389 | ||
4390 | gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions], | |
4391 | gcc_cv_as_sparc_sparc5,, | |
4392 | [-xarch=sparc5], | |
4393 | [.text | |
4394 | .register %g2, #scratch | |
4395 | .register %g3, #scratch | |
4396 | .align 4 | |
4397 | subxc %g1, %g2, %g3 | |
4398 | fpadd8 %f0, %f2, %f4],, | |
4399 | [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1, | |
4400 | [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])]) | |
4401 | ||
4402 | gcc_GAS_CHECK_FEATURE([SPARC6 instructions], | |
4403 | gcc_cv_as_sparc_sparc6,, | |
4404 | [-xarch=sparc6], | |
4405 | [.text | |
4406 | .register %g2, #scratch | |
4407 | .register %g3, #scratch | |
4408 | .align 4 | |
4409 | rd %entropy, %g1 | |
4410 | fpsll64x %f0, %f2, %f4],, | |
4411 | [AC_DEFINE(HAVE_AS_SPARC6, 1, | |
4412 | [Define if your assembler supports SPARC6 instructions.])]) | |
4413 | ||
4414 | gcc_GAS_CHECK_FEATURE([LEON instructions], | |
4415 | gcc_cv_as_sparc_leon,, | |
4416 | [-Aleon], | |
4417 | [.text | |
4418 | .register %g2, #scratch | |
4419 | .register %g3, #scratch | |
4420 | .align 4 | |
4421 | smac %g2, %g3, %g1 | |
4422 | umac %g2, %g3, %g1 | |
4423 | casa [[%g2]] 0xb, %g3, %g1],, | |
4424 | [AC_DEFINE(HAVE_AS_LEON, 1, | |
4425 | [Define if your assembler supports LEON instructions.])]) | |
4426 | ;; | |
4427 | ||
4428 | changequote(,)dnl | |
4429 | i[34567]86-*-* | x86_64-*-*) | |
4430 | changequote([,])dnl | |
4431 | case $target_os in | |
4432 | cygwin*) | |
4433 | # Full C++ conformance when using a shared libstdc++-v3 requires some | |
4434 | # support from the Cygwin DLL, which in more recent versions exports | |
4435 | # wrappers to aid in interposing and redirecting operators new, delete, | |
4436 | # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we | |
4437 | # are configuring for a version of Cygwin that exports the wrappers. | |
4438 | if test x$host = x$target && test x$host_cpu = xi686; then | |
4439 | AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) | |
4440 | else | |
4441 | # Can't check presence of libc functions during cross-compile, so | |
4442 | # we just have to assume we're building for an up-to-date target. | |
4443 | gcc_ac_cygwin_dll_wrappers=yes | |
4444 | fi | |
4445 | AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, | |
4446 | [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], | |
4447 | [Define if you want to generate code by default that assumes that the | |
4448 | Cygwin DLL exports wrappers to support libstdc++ function replacement.]) | |
4449 | esac | |
4450 | case $target_os in | |
4451 | cygwin* | pe | mingw32*) | |
4452 | # Recent binutils allows the three-operand form of ".comm" on PE. This | |
4453 | # definition is used unconditionally to initialise the default state of | |
4454 | # the target option variable that governs usage of the feature. | |
4455 | gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, | |
4456 | [2,19,52],,[.comm foo,1,32]) | |
4457 | AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, | |
4458 | [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], | |
4459 | [Define if your assembler supports specifying the alignment | |
4460 | of objects allocated using the GAS .comm command.]) | |
4461 | # Used for DWARF 2 in PE | |
4462 | gcc_GAS_CHECK_FEATURE([.secrel32 relocs], | |
4463 | gcc_cv_as_ix86_pe_secrel32, | |
4464 | [2,15,91],, | |
4465 | [.text | |
4466 | foo: nop | |
4467 | .data | |
4468 | .secrel32 foo], | |
4469 | [if test x$gcc_cv_ld != x \ | |
4470 | && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then | |
4471 | gcc_cv_as_ix86_pe_secrel32=yes | |
4472 | fi | |
4473 | rm -f conftest], | |
4474 | [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, | |
4475 | [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) | |
4476 | # Test if the assembler supports the extended form of the .section | |
4477 | # directive that specifies section alignment. LTO support uses this, | |
4478 | # but normally only after installation, so we warn but don't fail the | |
4479 | # configure if LTO is enabled but the assembler does not support it. | |
4480 | gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, | |
4481 | [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) | |
4482 | if test x$gcc_cv_as_section_has_align != xyes; then | |
4483 | case ",$enable_languages," in | |
4484 | *,lto,*) | |
4485 | AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) | |
4486 | ;; | |
4487 | esac | |
4488 | fi | |
4489 | ;; | |
4490 | esac | |
4491 | ||
4492 | gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,, | |
4493 | [-xbrace_comment=no], [.text],, | |
4494 | [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1, | |
4495 | [Define if your assembler supports -xbrace_comment option.])]) | |
4496 | ||
4497 | gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], | |
4498 | gcc_cv_as_ix86_filds,,, | |
4499 | [filds (%ebp); fists (%ebp)],, | |
4500 | [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, | |
4501 | [Define if your assembler uses filds and fists mnemonics.])]) | |
4502 | ||
4503 | gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], | |
4504 | gcc_cv_as_ix86_fildq,,, | |
4505 | [fildq (%ebp); fistpq (%ebp)],, | |
4506 | [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, | |
4507 | [Define if your assembler uses fildq and fistq mnemonics.])]) | |
4508 | ||
4509 | gcc_GAS_CHECK_FEATURE([cmov syntax], | |
4510 | gcc_cv_as_ix86_cmov_sun_syntax,,, | |
4511 | [cmovl.l %edx, %eax],, | |
4512 | [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, | |
4513 | [Define if your assembler supports the Sun syntax for cmov.])]) | |
4514 | ||
4515 | gcc_GAS_CHECK_FEATURE([ffreep mnemonic], | |
4516 | gcc_cv_as_ix86_ffreep,,, | |
4517 | [ffreep %st(1)],, | |
4518 | [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, | |
4519 | [Define if your assembler supports the ffreep mnemonic.])]) | |
4520 | ||
4521 | gcc_GAS_CHECK_FEATURE([.quad directive], | |
4522 | gcc_cv_as_ix86_quad,,, | |
4523 | [.quad 0],, | |
4524 | [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, | |
4525 | [Define if your assembler supports the .quad directive.])]) | |
4526 | ||
4527 | gcc_GAS_CHECK_FEATURE([sahf mnemonic], | |
4528 | gcc_cv_as_ix86_sahf,,, | |
4529 | [.code64 | |
4530 | sahf],, | |
4531 | [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, | |
4532 | [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) | |
4533 | ||
4534 | gcc_GAS_CHECK_FEATURE([interunit movq mnemonic], | |
4535 | gcc_cv_as_ix86_interunit_movq,,, | |
4536 | [.code64 | |
4537 | movq %mm0, %rax | |
4538 | movq %rax, %xmm0]) | |
4539 | AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ, | |
4540 | [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`], | |
4541 | [Define if your assembler supports interunit movq mnemonic.]) | |
4542 | ||
4543 | gcc_GAS_CHECK_FEATURE([hle prefixes], | |
4544 | gcc_cv_as_ix86_hle,,, | |
4545 | [lock xacquire cmpxchg %esi, (%ecx)],, | |
4546 | [AC_DEFINE(HAVE_AS_IX86_HLE, 1, | |
4547 | [Define if your assembler supports HLE prefixes.])]) | |
4548 | ||
4549 | gcc_GAS_CHECK_FEATURE([swap suffix], | |
4550 | gcc_cv_as_ix86_swap,,, | |
4551 | [movl.s %esp, %ebp],, | |
4552 | [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, | |
4553 | [Define if your assembler supports the swap suffix.])]) | |
4554 | ||
4555 | gcc_GAS_CHECK_FEATURE([different section symbol subtraction], | |
4556 | gcc_cv_as_ix86_diff_sect_delta,,, | |
4557 | [.section .rodata | |
4558 | .L1: | |
4559 | .long .L2-.L1 | |
4560 | .long .L3-.L1 | |
4561 | .text | |
4562 | .L3: nop | |
4563 | .L2: nop],, | |
4564 | [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, | |
4565 | [Define if your assembler supports the subtraction of symbols in different sections.])]) | |
4566 | ||
4567 | gcc_GAS_CHECK_FEATURE([rep and lock prefix], | |
4568 | gcc_cv_as_ix86_rep_lock_prefix,,, | |
4569 | [rep movsl | |
4570 | rep ret | |
4571 | rep nop | |
4572 | rep bsf %ecx, %eax | |
4573 | rep bsr %ecx, %eax | |
4574 | lock addl %edi, (%eax,%esi) | |
4575 | lock orl $0, (%esp)],, | |
4576 | [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, | |
4577 | [Define if the assembler supports 'rep <insn>, lock <insn>'.])]) | |
4578 | ||
4579 | gcc_GAS_CHECK_FEATURE([ud2 mnemonic], | |
4580 | gcc_cv_as_ix86_ud2,,, | |
4581 | [ud2],, | |
4582 | [AC_DEFINE(HAVE_AS_IX86_UD2, 1, | |
4583 | [Define if your assembler supports the 'ud2' mnemonic.])]) | |
4584 | ||
4585 | # Enforce 32-bit output with gas and gld. | |
4586 | if test x$gas = xyes; then | |
4587 | as_ix86_gas_32_opt="--32" | |
4588 | fi | |
4589 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
4590 | if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then | |
4591 | ld_ix86_gld_32_opt="-melf_i386_sol2" | |
4592 | else | |
4593 | ld_ix86_gld_32_opt="-melf_i386" | |
4594 | fi | |
4595 | fi | |
4596 | ||
4597 | gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc], | |
4598 | gcc_cv_as_ix86_tlsgdplt,, | |
4599 | [$as_ix86_gas_32_opt], | |
4600 | [call tls_gd@tlsgdplt], | |
4601 | [if test x$gcc_cv_ld != x \ | |
4602 | && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then | |
4603 | gcc_cv_as_ix86_tlsgdplt=yes | |
4604 | fi | |
4605 | rm -f conftest], | |
4606 | [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1, | |
4607 | [Define if your assembler and linker support @tlsgdplt.])]) | |
4608 | ||
4609 | conftest_s=' | |
4610 | .section .tdata,"aw'$tls_section_flag'",@progbits | |
4611 | tls_ld: | |
4612 | .section .text,"ax",@progbits | |
4613 | call tls_ld@tlsldmplt' | |
4614 | ||
4615 | gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc], | |
4616 | gcc_cv_as_ix86_tlsldmplt,, | |
4617 | [$as_ix86_gas_32_opt], | |
4618 | [$conftest_s], | |
4619 | [if test x$gcc_cv_ld != x \ | |
4620 | && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then | |
4621 | gcc_cv_as_ix86_tlsldmplt=yes | |
4622 | fi | |
4623 | rm -f conftest]) | |
4624 | AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT, | |
4625 | [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`], | |
4626 | [Define to 1 if your assembler and linker support @tlsldmplt.]) | |
4627 | ||
4628 | conftest_s=' | |
4629 | .section .text,"ax",@progbits | |
4630 | .globl _start | |
4631 | .type _start, @function | |
4632 | _start: | |
4633 | leal value@tlsldm(%ebx), %eax | |
4634 | call ___tls_get_addr@plt | |
4635 | ||
4636 | .section .tdata,"aw'$tls_section_flag'",@progbits | |
4637 | .type value, @object | |
4638 | value:' | |
4639 | gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc], | |
4640 | gcc_cv_as_ix86_tlsldm,, | |
4641 | [$as_ix86_gas_32_opt], | |
4642 | [$conftest_s], | |
4643 | [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ | |
4644 | && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then | |
4645 | if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \ | |
4646 | || dis conftest 2>/dev/null | grep nop > /dev/null; then | |
4647 | gcc_cv_as_ix86_tlsldm=yes | |
4648 | fi | |
4649 | fi | |
4650 | rm -f conftest]) | |
4651 | AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM, | |
4652 | [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`], | |
4653 | [Define to 1 if your assembler and linker support @tlsldm.]) | |
4654 | ||
4655 | conftest_s=' | |
4656 | .data | |
4657 | bar: | |
4658 | .byte 1 | |
4659 | .text | |
4660 | .global _start | |
4661 | _start: | |
4662 | cmpl $0, bar@GOT | |
4663 | jmp *_start@GOT' | |
4664 | gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc], | |
4665 | gcc_cv_as_ix86_got32x,, | |
4666 | [$as_ix86_gas_32_opt], | |
4667 | [$conftest_s], | |
4668 | [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ | |
4669 | && test x$gcc_cv_readelf != x \ | |
4670 | && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \ | |
4671 | | grep R_386_GOT32X > /dev/null 2>&1 \ | |
4672 | && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then | |
4673 | if $gcc_cv_objdump -dw conftest 2>&1 \ | |
4674 | | grep 0xffffff > /dev/null 2>&1; then | |
4675 | gcc_cv_as_ix86_got32x=no | |
4676 | else | |
4677 | gcc_cv_as_ix86_got32x=yes | |
4678 | fi | |
4679 | fi | |
4680 | rm -f conftest]) | |
4681 | AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X, | |
4682 | [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`], | |
4683 | [Define 0/1 if your assembler and linker support @GOT.]) | |
4684 | ||
4685 | gcc_GAS_CHECK_FEATURE([GOTOFF in data], | |
4686 | gcc_cv_as_ix86_gotoff_in_data, [2,11,0], | |
4687 | [$as_ix86_gas_32_opt], | |
4688 | [ .text | |
4689 | .L0: | |
4690 | nop | |
4691 | .data | |
4692 | .long .L0@GOTOFF]) | |
4693 | AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, | |
4694 | [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], | |
4695 | [Define true if the assembler supports '.long foo@GOTOFF'.]) | |
4696 | ||
4697 | conftest_s=' | |
4698 | .section .text,"ax",@progbits | |
4699 | .globl _start | |
4700 | .type _start, @function | |
4701 | _start: | |
4702 | leal ld@tlsldm(%ecx), %eax | |
4703 | call *___tls_get_addr@GOT(%ecx) | |
4704 | leal gd@tlsgd(%ecx), %eax | |
4705 | call *___tls_get_addr@GOT(%ecx) | |
4706 | ||
4707 | .section .tdata,"aw'$tls_section_flag'",@progbits | |
4708 | .type ld, @object | |
4709 | ld: | |
4710 | .byte 0 | |
4711 | .globl gd | |
4712 | .type gd, @object | |
4713 | gd: | |
4714 | .byte 0' | |
4715 | gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT], | |
4716 | gcc_cv_as_ix86_tls_get_addr_via_got,, | |
4717 | [$as_ix86_gas_32_opt], | |
4718 | [$conftest_s], | |
4719 | [if test x$gcc_cv_ld != x \ | |
4720 | && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then | |
4721 | gcc_cv_as_ix86_tls_get_addr_via_got=yes | |
4722 | fi | |
4723 | rm -f conftest]) | |
4724 | AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT, | |
4725 | [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`], | |
4726 | [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.]) | |
4727 | ;; | |
4728 | ||
4729 | ia64*-*-*) | |
4730 | gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], | |
4731 | gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, | |
4732 | [ .text | |
4733 | addl r15 = @ltoffx(x#), gp | |
4734 | ;; | |
4735 | ld8.mov r16 = [[r15]], x# | |
4736 | ],, | |
4737 | [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, | |
4738 | [Define if your assembler supports ltoffx and ldxmov relocations.])]) | |
4739 | ||
4740 | ;; | |
4741 | ||
4742 | powerpc*-*-*) | |
4743 | ||
4744 | case $target in | |
4745 | *-*-darwin*) | |
4746 | gcc_GAS_CHECK_FEATURE([.machine directive support], | |
4747 | gcc_cv_as_machine_directive,,, | |
4748 | [ .machine ppc7400]) | |
4749 | if test x$gcc_cv_as_machine_directive != xyes; then | |
4750 | echo "*** This target requires an assembler supporting \".machine\"" >&2 | |
4751 | echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 | |
4752 | test x$build = x$target && exit 1 | |
4753 | fi | |
4754 | ;; | |
4755 | esac | |
4756 | ||
4757 | case $target in | |
4758 | *-*-aix*) conftest_s=' .machine "pwr5" | |
4759 | .csect .text[[PR]] | |
4760 | mfcr 3,128';; | |
4761 | *-*-darwin*) conftest_s=' .text | |
4762 | mfcr r3,128';; | |
4763 | *) conftest_s=' .machine power4 | |
4764 | .text | |
4765 | mfcr 3,128';; | |
4766 | esac | |
4767 | ||
4768 | gcc_GAS_CHECK_FEATURE([mfcr field support], | |
4769 | gcc_cv_as_powerpc_mfcrf, [2,14,0],, | |
4770 | [$conftest_s],, | |
4771 | [AC_DEFINE(HAVE_AS_MFCRF, 1, | |
4772 | [Define if your assembler supports mfcr field.])]) | |
4773 | ||
4774 | case $target in | |
4775 | *-*-aix*) conftest_s=' .csect .text[[PR]] | |
4776 | LCF..0: | |
4777 | addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; | |
4778 | *-*-darwin*) | |
4779 | conftest_s=' .text | |
4780 | LCF0: | |
4781 | addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; | |
4782 | *) conftest_s=' .text | |
4783 | .LCF0: | |
4784 | addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; | |
4785 | esac | |
4786 | ||
4787 | gcc_GAS_CHECK_FEATURE([rel16 relocs], | |
4788 | gcc_cv_as_powerpc_rel16, [2,17,0], -a32, | |
4789 | [$conftest_s],, | |
4790 | [AC_DEFINE(HAVE_AS_REL16, 1, | |
4791 | [Define if your assembler supports R_PPC_REL16 relocs.])]) | |
4792 | ||
4793 | case $target in | |
4794 | *-*-aix*) conftest_s=' .machine "pwr7" | |
4795 | .csect .text[[PR]] | |
4796 | lxvd2x 1,2,3';; | |
4797 | *) conftest_s=' .machine power7 | |
4798 | .text | |
4799 | lxvd2x 1,2,3';; | |
4800 | esac | |
4801 | ||
4802 | gcc_GAS_CHECK_FEATURE([vector-scalar support], | |
4803 | gcc_cv_as_powerpc_vsx, [2,19,2], -a32, | |
4804 | [$conftest_s],, | |
4805 | [AC_DEFINE(HAVE_AS_VSX, 1, | |
4806 | [Define if your assembler supports VSX instructions.])]) | |
4807 | ||
4808 | gcc_GAS_CHECK_FEATURE([.gnu_attribute support], | |
4809 | gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, | |
4810 | [.gnu_attribute 4,1],, | |
4811 | [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, | |
4812 | [Define if your assembler supports .gnu_attribute.])]) | |
4813 | ||
4814 | gcc_GAS_CHECK_FEATURE([prologue entry point marker support], | |
4815 | gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings, | |
4816 | [ .reloc .,R_PPC64_ENTRY; nop],, | |
4817 | [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1, | |
4818 | [Define if your assembler supports the R_PPC64_ENTRY relocation.])]) | |
4819 | ||
4820 | gcc_GAS_CHECK_FEATURE([plt sequence marker support], | |
4821 | gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings, | |
4822 | [ .reloc .,R_PPC_PLTSEQ; nop],, | |
4823 | [AC_DEFINE(HAVE_AS_PLTSEQ, 1, | |
4824 | [Define if your assembler supports R_PPC*_PLTSEQ relocations.])]) | |
4825 | ||
4826 | case $target in | |
4827 | *-*-aix*) | |
4828 | gcc_GAS_CHECK_FEATURE([AIX .ref support], | |
4829 | gcc_cv_as_aix_ref, [2,21,0],, | |
4830 | [ .csect stuff[[rw]] | |
4831 | stuff: | |
4832 | .long 1 | |
4833 | .extern sym | |
4834 | .ref sym | |
4835 | ],, | |
4836 | [AC_DEFINE(HAVE_AS_REF, 1, | |
4837 | [Define if your assembler supports .ref])]) | |
4838 | ||
4839 | gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support], | |
4840 | gcc_cv_as_aix_dwloc, [2,21,0],, | |
4841 | [ .dwsect 0xA0000 | |
4842 | Lframe..0: | |
4843 | .vbyte 4,Lframe..0 | |
4844 | ],, | |
4845 | [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1, | |
4846 | [Define if your assembler supports AIX debug frame section label reference.])]) | |
4847 | ;; | |
4848 | esac | |
4849 | ;; | |
4850 | ||
4851 | mips*-*-*) | |
4852 | gcc_GAS_CHECK_FEATURE([explicit relocation support], | |
4853 | gcc_cv_as_mips_explicit_relocs, [2,14,0],, | |
4854 | [ lw $4,%gp_rel(foo)($4)],, | |
4855 | [if test x$target_cpu_default = x | |
4856 | then target_cpu_default=MASK_EXPLICIT_RELOCS | |
4857 | else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" | |
4858 | fi]) | |
4859 | ||
4860 | gcc_GAS_CHECK_FEATURE([-mno-shared support], | |
4861 | gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, | |
4862 | [AC_DEFINE(HAVE_AS_NO_SHARED, 1, | |
4863 | [Define if the assembler understands -mno-shared.])]) | |
4864 | ||
4865 | gcc_GAS_CHECK_FEATURE([.gnu_attribute support], | |
4866 | gcc_cv_as_mips_gnu_attribute, [2,18,0],, | |
4867 | [.gnu_attribute 4,1],, | |
4868 | [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, | |
4869 | [Define if your assembler supports .gnu_attribute.])]) | |
4870 | ||
4871 | gcc_GAS_CHECK_FEATURE([.module support], | |
4872 | gcc_cv_as_mips_dot_module,,[-32], | |
4873 | [.module mips2 | |
4874 | .module fp=xx],, | |
4875 | [AC_DEFINE(HAVE_AS_DOT_MODULE, 1, | |
4876 | [Define if your assembler supports .module.])]) | |
4877 | if test x$gcc_cv_as_mips_dot_module = xno \ | |
4878 | && test x$with_fp_32 != x; then | |
4879 | AC_MSG_ERROR( | |
4880 | [Requesting --with-fp-32= requires assembler support for .module.]) | |
4881 | fi | |
4882 | ||
4883 | gcc_GAS_CHECK_FEATURE([.micromips support], | |
4884 | gcc_cv_as_micromips_support,,[--fatal-warnings], | |
4885 | [.set micromips],, | |
4886 | [AC_DEFINE(HAVE_GAS_MICROMIPS, 1, | |
4887 | [Define if your assembler supports the .set micromips directive])]) | |
4888 | ||
4889 | gcc_GAS_CHECK_FEATURE([.dtprelword support], | |
4890 | gcc_cv_as_mips_dtprelword, [2,18,0],, | |
4891 | [.section .tdata,"awT",@progbits | |
4892 | x: | |
4893 | .word 2 | |
4894 | .text | |
4895 | .dtprelword x+0x8000],, | |
4896 | [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, | |
4897 | [Define if your assembler supports .dtprelword.])]) | |
4898 | ||
4899 | gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], | |
4900 | gcc_cv_as_mips_dspr1_mult,,, | |
4901 | [ .set mips32r2 | |
4902 | .set nodspr2 | |
4903 | .set dsp | |
4904 | madd $ac3,$4,$5 | |
4905 | maddu $ac3,$4,$5 | |
4906 | msub $ac3,$4,$5 | |
4907 | msubu $ac3,$4,$5 | |
4908 | mult $ac3,$4,$5 | |
4909 | multu $ac3,$4,$5],, | |
4910 | [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, | |
4911 | [Define if your assembler supports DSPR1 mult.])]) | |
4912 | ||
4913 | AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) | |
4914 | gcc_cv_as_ld_jalr_reloc=no | |
4915 | if test $gcc_cv_as_mips_explicit_relocs = yes; then | |
4916 | if test $in_tree_ld = yes ; then | |
4917 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
4918 | && test $in_tree_ld_is_elf = yes; then | |
4919 | gcc_cv_as_ld_jalr_reloc=yes | |
4920 | fi | |
4921 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then | |
4922 | echo ' .ent x' > conftest.s | |
4923 | echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s | |
4924 | echo ' lw $25,%call16(y)($28)' >> conftest.s | |
4925 | echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s | |
4926 | echo '1: jalr $25' >> conftest.s | |
4927 | echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s | |
4928 | echo '1: jalr $25' >> conftest.s | |
4929 | echo ' .end x' >> conftest.s | |
4930 | if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ | |
4931 | && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then | |
4932 | if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ | |
4933 | && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then | |
4934 | gcc_cv_as_ld_jalr_reloc=yes | |
4935 | fi | |
4936 | fi | |
4937 | rm -f conftest.* | |
4938 | fi | |
4939 | fi | |
4940 | if test $gcc_cv_as_ld_jalr_reloc = yes; then | |
4941 | if test x$target_cpu_default = x; then | |
4942 | target_cpu_default=MASK_RELAX_PIC_CALLS | |
4943 | else | |
4944 | target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" | |
4945 | fi | |
4946 | fi | |
4947 | AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) | |
4948 | ||
4949 | AC_CACHE_CHECK([linker for .eh_frame personality relaxation], | |
4950 | [gcc_cv_ld_mips_personality_relaxation], | |
4951 | [gcc_cv_ld_mips_personality_relaxation=no | |
4952 | if test $in_tree_ld = yes ; then | |
4953 | if test "$gcc_cv_gld_major_version" -eq 2 \ | |
4954 | -a "$gcc_cv_gld_minor_version" -ge 21 \ | |
4955 | -o "$gcc_cv_gld_major_version" -gt 2; then | |
4956 | gcc_cv_ld_mips_personality_relaxation=yes | |
4957 | fi | |
4958 | elif test x$gcc_cv_as != x \ | |
4959 | -a x$gcc_cv_ld != x \ | |
4960 | -a x$gcc_cv_readelf != x ; then | |
4961 | cat > conftest.s <<EOF | |
4962 | .cfi_startproc | |
4963 | .cfi_personality 0x80,indirect_ptr | |
4964 | .ent test | |
4965 | test: | |
4966 | nop | |
4967 | .end test | |
4968 | .cfi_endproc | |
4969 | ||
4970 | .section .data,"aw",@progbits | |
4971 | indirect_ptr: | |
4972 | .dc.a personality | |
4973 | EOF | |
4974 | if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \ | |
4975 | && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then | |
4976 | if $gcc_cv_readelf -d conftest 2>&1 \ | |
4977 | | grep TEXTREL > /dev/null 2>&1; then | |
4978 | : | |
4979 | elif $gcc_cv_readelf --relocs conftest 2>&1 \ | |
4980 | | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then | |
4981 | : | |
4982 | else | |
4983 | gcc_cv_ld_mips_personality_relaxation=yes | |
4984 | fi | |
4985 | fi | |
4986 | fi | |
4987 | rm -f conftest.s conftest.o conftest]) | |
4988 | if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then | |
4989 | AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, | |
4990 | [Define if your linker can relax absolute .eh_frame personality | |
4991 | pointers into PC-relative form.]) | |
4992 | fi | |
4993 | ||
4994 | gcc_GAS_CHECK_FEATURE([-mnan= support], | |
4995 | gcc_cv_as_mips_nan,, | |
4996 | [-mnan=2008],,, | |
4997 | [AC_DEFINE(HAVE_AS_NAN, 1, | |
4998 | [Define if the assembler understands -mnan=.])]) | |
4999 | if test x$gcc_cv_as_mips_nan = xno \ | |
5000 | && test x$with_nan != x; then | |
5001 | AC_MSG_ERROR( | |
5002 | [Requesting --with-nan= requires assembler support for -mnan=]) | |
5003 | fi | |
5004 | ;; | |
5005 | msp430-*-*) | |
5006 | # Earlier GAS versions generically support .gnu_attribute, but the | |
5007 | # msp430 assembler will not do anything with it. | |
5008 | gcc_GAS_CHECK_FEATURE([.gnu_attribute support], | |
5009 | gcc_cv_as_msp430_gnu_attribute, [2,33,50],, | |
5010 | [.gnu_attribute 4,1],, | |
5011 | [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, | |
5012 | [Define if your assembler supports .gnu_attribute.])]) | |
5013 | gcc_GAS_CHECK_FEATURE([.mspabi_attribute support], | |
5014 | gcc_cv_as_msp430_mspabi_attribute, [2,33,50],, | |
5015 | [.mspabi_attribute 4,1],, | |
5016 | [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1, | |
5017 | [Define if your assembler supports .mspabi_attribute.])]) | |
5018 | if test x$enable_newlib_nano_formatted_io = xyes; then | |
5019 | AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been | |
5020 | configured with --enable-newlib-nano-formatted-io.]) | |
5021 | fi | |
5022 | ;; | |
5023 | riscv*-*-*) | |
5024 | gcc_GAS_CHECK_FEATURE([.attribute support], | |
5025 | gcc_cv_as_riscv_attribute, [2,32,0],, | |
5026 | [.attribute stack_align,4],, | |
5027 | [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1, | |
5028 | [Define if your assembler supports .attribute.])]) | |
5029 | ;; | |
5030 | s390*-*-*) | |
5031 | gcc_GAS_CHECK_FEATURE([.gnu_attribute support], | |
5032 | gcc_cv_as_s390_gnu_attribute, [2,18,0],, | |
5033 | [.gnu_attribute 8,1],, | |
5034 | [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, | |
5035 | [Define if your assembler supports .gnu_attribute.])]) | |
5036 | gcc_GAS_CHECK_FEATURE([.machine and .machinemode support], | |
5037 | gcc_cv_as_s390_machine_machinemode, [2,24,0],, | |
5038 | [ .machinemode push | |
5039 | .machinemode pop | |
5040 | .machine push | |
5041 | .machine pop],, | |
5042 | [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1, | |
5043 | [Define if your assembler supports .machine and .machinemode.])]) | |
5044 | gcc_GAS_CHECK_FEATURE([architecture modifiers support], | |
5045 | gcc_cv_as_s390_architecture_modifiers, [2,26,0],, | |
5046 | [ .machine z13+vx ],, | |
5047 | [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1, | |
5048 | [Define if your assembler supports architecture modifiers.])]) | |
5049 | gcc_GAS_CHECK_FEATURE([vector load/store alignment hints], | |
5050 | gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],, | |
5051 | [ vl %v24,0(%r15),3 ],, | |
5052 | [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1, | |
5053 | [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])]) | |
5054 | ||
5055 | ;; | |
5056 | esac | |
5057 | ||
5058 | # Mips and HP-UX need the GNU assembler. | |
5059 | # Linux on IA64 might be able to use the Intel assembler. | |
5060 | ||
5061 | case "$target" in | |
5062 | mips*-*-* | *-*-hpux* ) | |
5063 | if test x$gas_flag = xyes \ | |
5064 | || test x"$host" != x"$build" \ | |
5065 | || test ! -x "$gcc_cv_as" \ | |
5066 | || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then | |
5067 | : | |
5068 | else | |
5069 | echo "*** This configuration requires the GNU assembler" >&2 | |
5070 | exit 1 | |
5071 | fi | |
5072 | ;; | |
5073 | esac | |
5074 | ||
5075 | # ??? Not all targets support dwarf2 debug_line, even within a version | |
5076 | # of gas. Moreover, we need to emit a valid instruction to trigger any | |
5077 | # info to the output file. So, as supported targets are added to gas 2.11, | |
5078 | # add some instruction here to (also) show we expect this might work. | |
5079 | # ??? Once 2.11 is released, probably need to add first known working | |
5080 | # version to the per-target configury. | |
5081 | case "$cpu_type" in | |
5082 | aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \ | |
5083 | | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \ | |
5084 | | tilegx | tilepro | visium | xstormy16 | xtensa) | |
5085 | insn="nop" | |
5086 | ;; | |
5087 | ia64 | s390) | |
5088 | insn="nop 0" | |
5089 | ;; | |
5090 | mmix) | |
5091 | insn="swym 0" | |
5092 | ;; | |
5093 | esac | |
5094 | if test x"$insn" != x; then | |
5095 | conftest_s="\ | |
5096 | .file 1 \"conftest.s\" | |
5097 | .loc 1 3 0 | |
5098 | $insn" | |
5099 | gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], | |
5100 | gcc_cv_as_dwarf2_debug_line, | |
5101 | [elf,2,11,0],, [$conftest_s], | |
5102 | [if test x$gcc_cv_objdump != x \ | |
5103 | && $gcc_cv_objdump -h conftest.o 2> /dev/null \ | |
5104 | | grep debug_line > /dev/null 2>&1; then | |
5105 | gcc_cv_as_dwarf2_debug_line=yes | |
5106 | elif test x$gcc_cv_otool != x \ | |
5107 | && $gcc_cv_otool -l conftest.o 2> /dev/null \ | |
5108 | | grep debug_line > /dev/null 2>&1; then | |
5109 | gcc_cv_as_dwarf2_debug_line=yes | |
5110 | fi]) | |
5111 | ||
5112 | # The .debug_line file table must be in the exact order that | |
5113 | # we specified the files, since these indices are also used | |
5114 | # by DW_AT_decl_file. Approximate this test by testing if | |
5115 | # the assembler bitches if the same index is assigned twice. | |
5116 | gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], | |
5117 | gcc_cv_as_dwarf2_file_buggy,,, | |
5118 | [ .file 1 "foo.s" | |
5119 | .file 1 "bar.s"]) | |
5120 | ||
5121 | if test $gcc_cv_as_dwarf2_debug_line = yes \ | |
5122 | && test $gcc_cv_as_dwarf2_file_buggy = no; then | |
5123 | AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, | |
5124 | [Define if your assembler supports dwarf2 .file/.loc directives, | |
5125 | and preserves file table indices exactly as given.]) | |
5126 | ||
5127 | if test $gcc_cv_as_leb128 = yes; then | |
5128 | conftest_s="\ | |
5129 | .file 1 \"conftest.s\" | |
5130 | .loc 1 3 0 view .LVU1 | |
5131 | $insn | |
5132 | .data | |
5133 | .uleb128 .LVU1 | |
5134 | .uleb128 .LVU1 | |
5135 | " | |
5136 | gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support], | |
5137 | gcc_cv_as_dwarf2_debug_view, | |
5138 | [elf,2,27,0],,[$conftest_s],, | |
5139 | [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1, | |
5140 | [Define if your assembler supports views in dwarf2 .loc directives.])]) | |
5141 | fi | |
5142 | fi | |
5143 | ||
5144 | gcc_GAS_CHECK_FEATURE([--gdwarf2 option], | |
5145 | gcc_cv_as_gdwarf2_flag, | |
5146 | [elf,2,11,0], [--gdwarf2], [$insn],, | |
5147 | [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, | |
5148 | [Define if your assembler supports the --gdwarf2 option.])]) | |
5149 | ||
5150 | gcc_GAS_CHECK_FEATURE([--gstabs option], | |
5151 | gcc_cv_as_gstabs_flag, | |
5152 | [elf,2,11,0], [--gstabs], [$insn],, | |
5153 | [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, | |
5154 | [Define if your assembler supports the --gstabs option.])]) | |
5155 | ||
5156 | gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], | |
5157 | gcc_cv_as_debug_prefix_map_flag, | |
5158 | [2,18,0], [--debug-prefix-map /a=/b], [$insn],, | |
5159 | [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, | |
5160 | [Define if your assembler supports the --debug-prefix-map option.])]) | |
5161 | fi | |
5162 | ||
5163 | gcc_GAS_CHECK_FEATURE([compressed debug sections], | |
5164 | gcc_cv_as_compress_debug,,,, | |
5165 | [# gas compiled without zlib cannot compress debug sections and warns | |
5166 | # about it, but still exits successfully. So check for this, too. | |
5167 | if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null | |
5168 | then | |
5169 | gcc_cv_as_compress_debug=0 | |
5170 | # Since binutils 2.26, gas supports --compress-debug-sections=type, | |
5171 | # defaulting to the ELF gABI format. | |
5172 | elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 | |
5173 | then | |
5174 | gcc_cv_as_compress_debug=2 | |
5175 | gcc_cv_as_compress_debug_option="--compress-debug-sections" | |
5176 | gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" | |
5177 | # Before binutils 2.26, gas only supported --compress-debug-options and | |
5178 | # emitted the traditional GNU format. | |
5179 | elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 | |
5180 | then | |
5181 | gcc_cv_as_compress_debug=1 | |
5182 | gcc_cv_as_compress_debug_option="--compress-debug-sections" | |
5183 | gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" | |
5184 | else | |
5185 | gcc_cv_as_compress_debug=0 | |
5186 | fi]) | |
5187 | AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug, | |
5188 | [Define to the level of your assembler's compressed debug section support.]) | |
5189 | AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option", | |
5190 | [Define to the assembler option to enable compressed debug sections.]) | |
5191 | AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option", | |
5192 | [Define to the assembler option to disable compressed debug sections.]) | |
5193 | ||
5194 | gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, | |
5195 | ,, | |
5196 | [.lcomm bar,4,16],, | |
5197 | [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, | |
5198 | [Define if your assembler supports .lcomm with an alignment field.])]) | |
5199 | ||
5200 | if test x$with_sysroot = x && test x$host = x$target \ | |
5201 | && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ | |
5202 | && test "$prefix" != "NONE"; then | |
5203 | AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", | |
5204 | [Define to PREFIX/include if cpp should also search that directory.]) | |
5205 | fi | |
5206 | ||
5207 | # Determine the version of glibc, if any, used on the target. | |
5208 | AC_MSG_CHECKING([for target glibc version]) | |
5209 | AC_ARG_WITH([glibc-version], | |
5210 | [AS_HELP_STRING([--with-glibc-version=M.N], | |
5211 | [assume GCC used with glibc version M.N or later])], [ | |
5212 | if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then | |
5213 | glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` | |
5214 | glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` | |
5215 | else | |
5216 | AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) | |
5217 | fi], [ | |
5218 | glibc_version_major=0 | |
5219 | glibc_version_minor=0 | |
5220 | [if test -f $target_header_dir/features.h \ | |
5221 | && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \ | |
5222 | && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then | |
5223 | glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'` | |
5224 | glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'` | |
5225 | fi]]) | |
5226 | AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) | |
5227 | AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major], | |
5228 | [GNU C Library major version number used on the target, or 0.]) | |
5229 | AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor], | |
5230 | [GNU C Library minor version number used on the target, or 0.]) | |
5231 | ||
5232 | AC_ARG_ENABLE(gnu-unique-object, | |
5233 | [AS_HELP_STRING([--enable-gnu-unique-object], | |
5234 | [enable the use of the @gnu_unique_object ELF extension on glibc systems])], | |
5235 | [case $enable_gnu_unique_object in | |
5236 | yes | no) ;; | |
5237 | *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. | |
5238 | Valid choices are 'yes' and 'no'.]) ;; | |
5239 | esac], | |
5240 | [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, | |
5241 | [elf,2,19,52],, | |
5242 | [.type foo, '$target_type_format_char'gnu_unique_object],, | |
5243 | # We need to unquote above to to use the definition from config.gcc. | |
5244 | # Also check for ld.so support, i.e. glibc 2.11 or higher. | |
5245 | [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )] | |
5246 | )]) | |
5247 | if test x$enable_gnu_unique_object = xyes; then | |
5248 | AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, | |
5249 | [Define if your assembler supports @gnu_unique_object.]) | |
5250 | fi | |
5251 | ||
5252 | AC_CACHE_CHECK([assembler for tolerance to line number 0], | |
5253 | [gcc_cv_as_line_zero], | |
5254 | [gcc_cv_as_line_zero=no | |
5255 | if test $in_tree_gas = yes; then | |
5256 | gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) | |
5257 | elif test "x$gcc_cv_as" != x; then | |
5258 | { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s | |
5259 | if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && | |
5260 | test "x`cat conftest.out`" = x | |
5261 | then | |
5262 | gcc_cv_as_line_zero=yes | |
5263 | else | |
5264 | echo "configure: failed program was" >&AS_MESSAGE_LOG_FD | |
5265 | cat conftest.s >&AS_MESSAGE_LOG_FD | |
5266 | echo "configure: error output was" >&AS_MESSAGE_LOG_FD | |
5267 | cat conftest.out >&AS_MESSAGE_LOG_FD | |
5268 | fi | |
5269 | rm -f conftest.o conftest.s conftest.out | |
5270 | fi]) | |
5271 | if test "x$gcc_cv_as_line_zero" = xyes; then | |
5272 | AC_DEFINE([HAVE_AS_LINE_ZERO], 1, | |
5273 | [Define if the assembler won't complain about a line such as # 0 "" 2.]) | |
5274 | fi | |
5275 | ||
5276 | AC_MSG_CHECKING(support for thin archives) | |
5277 | thin_archive_support=no | |
5278 | echo 'int main (void) { return 0; }' > conftest.c | |
5279 | if ($AR --version | sed 1q | grep "GNU ar" \ | |
5280 | && $CC $CFLAGS -c conftest.c \ | |
5281 | && $AR rcT conftest.a conftest.o \ | |
5282 | && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then | |
5283 | thin_archive_support=yes | |
5284 | fi | |
5285 | rm -f conftest.c conftest.o conftest.a conftest | |
5286 | AC_MSG_RESULT($thin_archive_support) | |
5287 | AC_SUBST(thin_archive_support) | |
5288 | ||
5289 | AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) | |
5290 | gcc_cv_ld_eh_frame_hdr=no | |
5291 | if test $in_tree_ld = yes ; then | |
5292 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5293 | && test $in_tree_ld_is_elf = yes; then | |
5294 | gcc_cv_ld_eh_frame_hdr=yes | |
5295 | fi | |
5296 | elif test x$gcc_cv_ld != x; then | |
5297 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
5298 | # Check if linker supports --eh-frame-hdr option | |
5299 | if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then | |
5300 | gcc_cv_ld_eh_frame_hdr=yes | |
5301 | fi | |
5302 | else | |
5303 | case "$target" in | |
5304 | *-*-solaris2*) | |
5305 | # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. | |
5306 | if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then | |
5307 | gcc_cv_ld_eh_frame_hdr=yes | |
5308 | fi | |
5309 | ;; | |
5310 | esac | |
5311 | fi | |
5312 | fi | |
5313 | GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) | |
5314 | if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then | |
5315 | AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, | |
5316 | [Define if your linker supports .eh_frame_hdr.]) | |
5317 | fi | |
5318 | AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) | |
5319 | ||
5320 | AC_MSG_CHECKING(linker CIEv3 in .eh_frame support) | |
5321 | gcc_cv_ld_eh_frame_ciev3=no | |
5322 | if test $in_tree_ld = yes ; then | |
5323 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5324 | && test $in_tree_ld_is_elf = yes; then | |
5325 | gcc_cv_ld_eh_frame_ciev3=yes | |
5326 | fi | |
5327 | elif test x$gcc_cv_ld != x; then | |
5328 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
5329 | gcc_cv_ld_eh_frame_ciev3=yes | |
5330 | if test 0"$ld_date" -lt 20040513; then | |
5331 | if test -n "$ld_date"; then | |
5332 | # If there was date string, but was earlier than 2004-05-13, fail | |
5333 | gcc_cv_ld_eh_frame_ciev3=no | |
5334 | elif test "$ld_vers_major" -lt 2; then | |
5335 | gcc_cv_ld_eh_frame_ciev3=no | |
5336 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then | |
5337 | gcc_cv_ld_eh_frame_ciev3=no | |
5338 | fi | |
5339 | fi | |
5340 | else | |
5341 | case "$target" in | |
5342 | *-*-solaris2*) | |
5343 | # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1. | |
5344 | if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then | |
5345 | gcc_cv_ld_eh_frame_ciev3=yes | |
5346 | fi | |
5347 | ;; | |
5348 | esac | |
5349 | fi | |
5350 | fi | |
5351 | AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3, | |
5352 | [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`], | |
5353 | [Define 0/1 if your linker supports CIE v3 in .eh_frame.]) | |
5354 | AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3) | |
5355 | ||
5356 | AC_MSG_CHECKING(linker position independent executable support) | |
5357 | gcc_cv_ld_pie=no | |
5358 | if test $in_tree_ld = yes ; then | |
5359 | case "$target" in | |
5360 | # Full PIE support on Solaris was only introduced in gld 2.26. | |
5361 | *-*-solaris2*) gcc_gld_pie_min_version=26 ;; | |
5362 | *) gcc_gld_pie_min_version=15 ;; | |
5363 | esac | |
5364 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5365 | && test $in_tree_ld_is_elf = yes; then | |
5366 | gcc_cv_ld_pie=yes | |
5367 | fi | |
5368 | elif test x$gcc_cv_ld != x; then | |
5369 | # Check if linker supports -pie option | |
5370 | if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then | |
5371 | gcc_cv_ld_pie=yes | |
5372 | case "$target" in | |
5373 | *-*-solaris2*) | |
5374 | if echo "$ld_ver" | grep GNU > /dev/null \ | |
5375 | && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then | |
5376 | gcc_cv_ld_pie=no | |
5377 | fi | |
5378 | ;; | |
5379 | esac | |
5380 | else | |
5381 | case "$target" in | |
5382 | *-*-solaris2.1[[1-9]]*) | |
5383 | # Solaris 11.3 added PIE support. | |
5384 | if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then | |
5385 | gcc_cv_ld_pie=yes | |
5386 | fi | |
5387 | ;; | |
5388 | esac | |
5389 | fi | |
5390 | fi | |
5391 | if test x"$gcc_cv_ld_pie" = xyes; then | |
5392 | AC_DEFINE(HAVE_LD_PIE, 1, | |
5393 | [Define if your linker supports PIE option.]) | |
5394 | fi | |
5395 | AC_MSG_RESULT($gcc_cv_ld_pie) | |
5396 | ||
5397 | AC_MSG_CHECKING(linker PIE support with copy reloc) | |
5398 | gcc_cv_ld_pie_copyreloc=no | |
5399 | if test $gcc_cv_ld_pie = yes ; then | |
5400 | if test $in_tree_ld = yes ; then | |
5401 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then | |
5402 | gcc_cv_ld_pie_copyreloc=yes | |
5403 | fi | |
5404 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then | |
5405 | # Check if linker supports -pie option with copy reloc | |
5406 | case "$target" in | |
5407 | i?86-*-linux* | x86_64-*-linux*) | |
5408 | cat > conftest1.s <<EOF | |
5409 | .globl a_glob | |
5410 | .data | |
5411 | .type a_glob, @object | |
5412 | .size a_glob, 4 | |
5413 | a_glob: | |
5414 | .long 2 | |
5415 | EOF | |
5416 | cat > conftest2.s <<EOF | |
5417 | .text | |
5418 | .globl main | |
5419 | .type main, @function | |
5420 | main: | |
5421 | movl %eax, a_glob(%rip) | |
5422 | .size main, .-main | |
5423 | .globl ptr | |
5424 | .section .data.rel,"aw",@progbits | |
5425 | .type ptr, @object | |
5426 | ptr: | |
5427 | .quad a_glob | |
5428 | EOF | |
5429 | if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ | |
5430 | && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \ | |
5431 | && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ | |
5432 | && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then | |
5433 | gcc_cv_ld_pie_copyreloc=yes | |
5434 | fi | |
5435 | rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s | |
5436 | ;; | |
5437 | esac | |
5438 | fi | |
5439 | fi | |
5440 | AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC, | |
5441 | [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`], | |
5442 | [Define 0/1 if your linker supports -pie option with copy reloc.]) | |
5443 | AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc) | |
5444 | ||
5445 | AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) | |
5446 | gcc_cv_ld_eh_gc_sections=no | |
5447 | if test $in_tree_ld = yes ; then | |
5448 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5449 | && test $in_tree_ld_is_elf = yes; then | |
5450 | gcc_cv_ld_eh_gc_sections=yes | |
5451 | fi | |
5452 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then | |
5453 | cat > conftest.s <<EOF | |
5454 | .section .text | |
5455 | .globl _start | |
5456 | .type _start, @function | |
5457 | _start: | |
5458 | .long foo | |
5459 | .size _start, .-_start | |
5460 | .section .text.foo,"ax",@progbits | |
5461 | .type foo, @function | |
5462 | foo: | |
5463 | .long 0 | |
5464 | .size foo, .-foo | |
5465 | .section .gcc_except_table.foo,"a",@progbits | |
5466 | .L0: | |
5467 | .long 0 | |
5468 | .section .eh_frame,"a",@progbits | |
5469 | .long .L0 | |
5470 | EOF | |
5471 | if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then | |
5472 | if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | |
5473 | | grep "gc-sections option ignored" > /dev/null; then | |
5474 | gcc_cv_ld_eh_gc_sections=no | |
5475 | elif $gcc_cv_objdump -h conftest 2> /dev/null \ | |
5476 | | grep gcc_except_table > /dev/null; then | |
5477 | gcc_cv_ld_eh_gc_sections=yes | |
5478 | # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. | |
5479 | if test x$gcc_cv_as_comdat_group != xyes; then | |
5480 | gcc_cv_ld_eh_gc_sections=no | |
5481 | cat > conftest.s <<EOF | |
5482 | .section .text | |
5483 | .globl _start | |
5484 | .type _start, @function | |
5485 | _start: | |
5486 | .long foo | |
5487 | .size _start, .-_start | |
5488 | .section .gnu.linkonce.t.foo,"ax",@progbits | |
5489 | .type foo, @function | |
5490 | foo: | |
5491 | .long 0 | |
5492 | .size foo, .-foo | |
5493 | .section .gcc_except_table.foo,"a",@progbits | |
5494 | .L0: | |
5495 | .long 0 | |
5496 | .section .eh_frame,"a",@progbits | |
5497 | .long .L0 | |
5498 | EOF | |
5499 | if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then | |
5500 | if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | |
5501 | | grep "gc-sections option ignored" > /dev/null; then | |
5502 | gcc_cv_ld_eh_gc_sections=no | |
5503 | elif $gcc_cv_objdump -h conftest 2> /dev/null \ | |
5504 | | grep gcc_except_table > /dev/null; then | |
5505 | gcc_cv_ld_eh_gc_sections=yes | |
5506 | fi | |
5507 | fi | |
5508 | fi | |
5509 | fi | |
5510 | fi | |
5511 | rm -f conftest.s conftest.o conftest | |
5512 | fi | |
5513 | case "$target" in | |
5514 | hppa*-*-linux*) | |
5515 | # ??? This apparently exposes a binutils bug with PC-relative relocations. | |
5516 | gcc_cv_ld_eh_gc_sections=no | |
5517 | ;; | |
5518 | esac | |
5519 | if test x$gcc_cv_ld_eh_gc_sections = xyes; then | |
5520 | AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, | |
5521 | [Define if your linker supports garbage collection of | |
5522 | sections in presence of EH frames.]) | |
5523 | fi | |
5524 | AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) | |
5525 | ||
5526 | AC_MSG_CHECKING(linker EH garbage collection of sections bug) | |
5527 | gcc_cv_ld_eh_gc_sections_bug=no | |
5528 | if test $in_tree_ld = yes ; then | |
5529 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ | |
5530 | && test $in_tree_ld_is_elf = yes; then | |
5531 | gcc_cv_ld_eh_gc_sections_bug=yes | |
5532 | fi | |
5533 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then | |
5534 | gcc_cv_ld_eh_gc_sections_bug=yes | |
5535 | cat > conftest.s <<EOF | |
5536 | .section .text | |
5537 | .globl _start | |
5538 | .type _start, @function | |
5539 | _start: | |
5540 | .long foo | |
5541 | .size _start, .-_start | |
5542 | .section .text.startup.foo,"ax",@progbits | |
5543 | .type foo, @function | |
5544 | foo: | |
5545 | .long 0 | |
5546 | .size foo, .-foo | |
5547 | .section .gcc_except_table.foo,"a",@progbits | |
5548 | .L0: | |
5549 | .long 0 | |
5550 | .section .eh_frame,"a",@progbits | |
5551 | .long .L0 | |
5552 | EOF | |
5553 | if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then | |
5554 | if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | |
5555 | | grep "gc-sections option ignored" > /dev/null; then | |
5556 | : | |
5557 | elif $gcc_cv_objdump -h conftest 2> /dev/null \ | |
5558 | | grep gcc_except_table > /dev/null; then | |
5559 | gcc_cv_ld_eh_gc_sections_bug=no | |
5560 | fi | |
5561 | fi | |
5562 | rm -f conftest.s conftest.o conftest | |
5563 | fi | |
5564 | if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then | |
5565 | AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, | |
5566 | [Define if your linker has buggy garbage collection of | |
5567 | sections support when .text.startup.foo like sections are used.]) | |
5568 | fi | |
5569 | AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) | |
5570 | ||
5571 | AC_MSG_CHECKING(linker for compressed debug sections) | |
5572 | # gold/gld support compressed debug sections since binutils 2.19/2.21 | |
5573 | # In binutils 2.26, gld gained support for the ELF gABI format. | |
5574 | if test $in_tree_ld = yes ; then | |
5575 | gcc_cv_ld_compress_debug=0 | |
5576 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5577 | && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then | |
5578 | gcc_cv_ld_compress_debug=2 | |
5579 | gcc_cv_ld_compress_debug_option="--compress-debug-sections" | |
5580 | elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5581 | && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then | |
5582 | gcc_cv_ld_compress_debug=3 | |
5583 | gcc_cv_ld_compress_debug_option="--compress-debug-sections" | |
5584 | elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5585 | && test $in_tree_ld_is_elf = yes; then | |
5586 | gcc_cv_ld_compress_debug=1 | |
5587 | fi | |
5588 | elif echo "$ld_ver" | grep GNU > /dev/null; then | |
5589 | if test "$ld_vers_major" -lt 2 \ | |
5590 | || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then | |
5591 | gcc_cv_ld_compress_debug=0 | |
5592 | elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then | |
5593 | gcc_cv_ld_compress_debug=1 | |
5594 | else | |
5595 | gcc_cv_ld_compress_debug=3 | |
5596 | gcc_cv_ld_compress_debug_option="--compress-debug-sections" | |
5597 | fi | |
5598 | if test $ld_is_gold = yes; then | |
5599 | gcc_cv_ld_compress_debug=2 | |
5600 | gcc_cv_ld_compress_debug_option="--compress-debug-sections" | |
5601 | fi | |
5602 | else | |
5603 | changequote(,)dnl | |
5604 | case "${target}" in | |
5605 | *-*-solaris2*) | |
5606 | # Introduced in Solaris 11.2. | |
5607 | if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then | |
5608 | gcc_cv_ld_compress_debug=3 | |
5609 | gcc_cv_ld_compress_debug_option="-z compress-sections" | |
5610 | else | |
5611 | gcc_cv_ld_compress_debug=0 | |
5612 | fi | |
5613 | ;; | |
5614 | *) | |
5615 | # Assume linkers other than GNU ld don't support compessed debug | |
5616 | # sections. | |
5617 | gcc_cv_ld_compress_debug=0 | |
5618 | ;; | |
5619 | esac | |
5620 | changequote([,])dnl | |
5621 | fi | |
5622 | AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug, | |
5623 | [Define to the level of your linker's compressed debug section support.]) | |
5624 | AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option", | |
5625 | [Define to the linker option to enable compressed debug sections.]) | |
5626 | AC_MSG_RESULT($gcc_cv_ld_compress_debug) | |
5627 | ||
5628 | if test x"$ld64_flag" = x"yes"; then | |
5629 | ||
5630 | # Set defaults for possibly untestable items. | |
5631 | gcc_cv_ld64_export_dynamic=0 | |
5632 | ||
5633 | if test "$build" = "$host"; then | |
5634 | darwin_try_test=1 | |
5635 | else | |
5636 | darwin_try_test=0 | |
5637 | fi | |
5638 | ||
5639 | # On Darwin, because of FAT library support, it is often possible to execute | |
5640 | # exes from compatible archs even when the host differs from the build system. | |
5641 | case "$build","$host" in | |
5642 | x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*) | |
5643 | darwin_try_test=1;; | |
5644 | *) ;; | |
5645 | esac | |
5646 | ||
5647 | # If the configurer specified a minimum ld64 version to be supported, then use | |
5648 | # that to determine feature support. | |
5649 | if test x"${gcc_cv_ld64_version}" != x; then | |
5650 | AC_MSG_CHECKING(ld64 specified version) | |
5651 | gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'` | |
5652 | AC_MSG_RESULT($gcc_cv_ld64_major) | |
5653 | if test "$gcc_cv_ld64_major" -ge 236; then | |
5654 | gcc_cv_ld64_export_dynamic=1 | |
5655 | fi | |
5656 | elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then | |
5657 | # If the version was not specified, try to find it. | |
5658 | AC_MSG_CHECKING(linker version) | |
5659 | if test x"${gcc_cv_ld64_version}" = x; then | |
5660 | gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'` | |
5661 | fi | |
5662 | AC_MSG_RESULT($gcc_cv_ld64_version) | |
5663 | ||
5664 | AC_MSG_CHECKING(linker for -export_dynamic support) | |
5665 | gcc_cv_ld64_export_dynamic=1 | |
5666 | if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then | |
5667 | gcc_cv_ld64_export_dynamic=0 | |
5668 | fi | |
5669 | AC_MSG_RESULT($gcc_cv_ld64_export_dynamic) | |
5670 | fi | |
5671 | ||
5672 | if test x"${gcc_cv_ld64_version}" != x; then | |
5673 | AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}", | |
5674 | [Define to ld64 version.]) | |
5675 | fi | |
5676 | ||
5677 | AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic, | |
5678 | [Define to 1 if ld64 supports '-export_dynamic'.]) | |
5679 | fi | |
5680 | ||
5681 | # -------- | |
5682 | # UNSORTED | |
5683 | # -------- | |
5684 | ||
5685 | AC_CACHE_CHECK(linker --as-needed support, | |
5686 | gcc_cv_ld_as_needed, | |
5687 | [gcc_cv_ld_as_needed=no | |
5688 | gcc_cv_ld_as_needed_option='--as-needed' | |
5689 | gcc_cv_ld_no_as_needed_option='--no-as-needed' | |
5690 | if test $in_tree_ld = yes ; then | |
5691 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ | |
5692 | && test $in_tree_ld_is_elf = yes; then | |
5693 | gcc_cv_ld_as_needed=yes | |
5694 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then | |
5695 | gcc_cv_ld_as_needed_option='--push-state --as-needed' | |
5696 | gcc_cv_ld_no_as_needed_option='--pop-state' | |
5697 | fi | |
5698 | fi | |
5699 | elif test x$gcc_cv_ld != x; then | |
5700 | # Check if linker supports --as-needed and --no-as-needed options | |
5701 | if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then | |
5702 | gcc_cv_ld_as_needed=yes | |
5703 | if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \ | |
5704 | && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \ | |
5705 | && echo "$ld_ver" | grep GNU > /dev/null \ | |
5706 | && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then | |
5707 | # Use these options only when both ld.bfd and ld.gold support | |
5708 | # --push-state/--pop-state, which unfortunately wasn't added | |
5709 | # at the same time. | |
5710 | gcc_cv_ld_as_needed_option='--push-state --as-needed' | |
5711 | gcc_cv_ld_no_as_needed_option='--pop-state' | |
5712 | fi | |
5713 | fi | |
5714 | case "$target:$gnu_ld" in | |
5715 | *-*-solaris2*:no) | |
5716 | # Solaris 2 ld always supports -z ignore/-z record. Prefer the native | |
5717 | # forms. | |
5718 | gcc_cv_ld_as_needed=yes | |
5719 | gcc_cv_ld_as_needed_option="-z ignore" | |
5720 | gcc_cv_ld_no_as_needed_option="-z record" | |
5721 | ;; | |
5722 | esac | |
5723 | fi | |
5724 | # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses | |
5725 | # dl_iterate_phdr, i.e. since Solaris 11. | |
5726 | case "$target" in | |
5727 | *-*-solaris2.1[[1-9]]*) | |
5728 | case "$target" in | |
5729 | i?86-*-* | x86_64-*-*) | |
5730 | if echo "$ld_ver" | grep GNU > /dev/null; then | |
5731 | # Doesn't work with gld on Solaris/x86 due to PR ld/12320. | |
5732 | gcc_cv_ld_as_needed=no | |
5733 | fi | |
5734 | ;; | |
5735 | esac | |
5736 | ;; | |
5737 | *-*-solaris2*) | |
5738 | gcc_cv_ld_as_needed=no | |
5739 | ;; | |
5740 | esac | |
5741 | ]) | |
5742 | if test x"$gcc_cv_ld_as_needed" = xyes; then | |
5743 | AC_DEFINE(HAVE_LD_AS_NEEDED, 1, | |
5744 | [Define if your linker supports --as-needed/--no-as-needed or equivalent options.]) | |
5745 | AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option", | |
5746 | [Define to the linker option to ignore unused dependencies.]) | |
5747 | AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option", | |
5748 | [Define to the linker option to keep unused dependencies.]) | |
5749 | fi | |
5750 | ||
5751 | AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities) | |
5752 | saved_LDFLAGS="$LDFLAGS" | |
5753 | for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do | |
5754 | LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map" | |
5755 | AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], | |
5756 | [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no]) | |
5757 | done | |
5758 | LDFLAGS="$saved_LDFLAGS" | |
5759 | if test "x$gcc_cv_ld_clearcap" = xyes; then | |
5760 | AC_DEFINE([HAVE_LD_CLEARCAP], 1, | |
5761 | [Define if the linker supports clearing hardware capabilities via mapfile.]) | |
5762 | AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map]) | |
5763 | fi | |
5764 | AC_MSG_RESULT($gcc_cv_ld_clearcap) | |
5765 | ||
5766 | case "$target" in | |
5767 | powerpc*-*-*) | |
5768 | case "$target" in | |
5769 | *le-*-linux*) | |
5770 | emul_name="-melf32lppc" | |
5771 | ;; | |
5772 | *) | |
5773 | emul_name="-melf32ppc" | |
5774 | ;; | |
5775 | esac | |
5776 | AC_CACHE_CHECK(linker .gnu.attributes long double support, | |
5777 | gcc_cv_ld_ppc_attr, | |
5778 | [gcc_cv_ld_ppc_attr=no | |
5779 | if test x"$ld_is_gold" = xyes; then | |
5780 | gcc_cv_ld_ppc_attr=yes | |
5781 | elif test $in_tree_ld = yes ; then | |
5782 | if test "$gcc_cv_gld_major_version" -eq 2 \ | |
5783 | -a "$gcc_cv_gld_minor_version" -ge 28 \ | |
5784 | -o "$gcc_cv_gld_major_version" -gt 2; then | |
5785 | gcc_cv_ld_ppc_attr=yes | |
5786 | fi | |
5787 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then | |
5788 | # check that merging the long double .gnu_attribute doesn't warn | |
5789 | cat > conftest1.s <<EOF | |
5790 | .gnu_attribute 4,1 | |
5791 | EOF | |
5792 | cat > conftest2.s <<EOF | |
5793 | .gnu_attribute 4,9 | |
5794 | EOF | |
5795 | if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \ | |
5796 | && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \ | |
5797 | && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \ | |
5798 | && test ! -s conftest.err; then | |
5799 | gcc_cv_ld_ppc_attr=yes | |
5800 | fi | |
5801 | rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s | |
5802 | fi | |
5803 | ]) | |
5804 | if test x$gcc_cv_ld_ppc_attr = xyes; then | |
5805 | AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1, | |
5806 | [Define if your PowerPC linker has .gnu.attributes long double support.]) | |
5807 | fi | |
5808 | ;; | |
5809 | esac | |
5810 | ||
5811 | case "$target:$tm_file" in | |
5812 | powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) | |
5813 | case "$target" in | |
5814 | *le-*-linux*) | |
5815 | emul_name="-melf64lppc" | |
5816 | ;; | |
5817 | *-*-linux*) | |
5818 | emul_name="-melf64ppc" | |
5819 | ;; | |
5820 | *-*-freebsd*) | |
5821 | emul_name="-melf64ppc_fbsd" | |
5822 | ;; | |
5823 | esac | |
5824 | AC_CACHE_CHECK(linker support for omitting dot symbols, | |
5825 | gcc_cv_ld_no_dot_syms, | |
5826 | [gcc_cv_ld_no_dot_syms=no | |
5827 | if test x"$ld_is_gold" = xyes; then | |
5828 | gcc_cv_ld_no_dot_syms=yes | |
5829 | elif test $in_tree_ld = yes ; then | |
5830 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then | |
5831 | gcc_cv_ld_no_dot_syms=yes | |
5832 | fi | |
5833 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then | |
5834 | cat > conftest1.s <<EOF | |
5835 | .text | |
5836 | bl .foo | |
5837 | EOF | |
5838 | cat > conftest2.s <<EOF | |
5839 | .section ".opd","aw" | |
5840 | .align 3 | |
5841 | .globl foo | |
5842 | .type foo,@function | |
5843 | foo: | |
5844 | .quad .LEfoo,.TOC.@tocbase,0 | |
5845 | .text | |
5846 | .LEfoo: | |
5847 | blr | |
5848 | .size foo,.-.LEfoo | |
5849 | EOF | |
5850 | if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ | |
5851 | && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ | |
5852 | && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then | |
5853 | gcc_cv_ld_no_dot_syms=yes | |
5854 | fi | |
5855 | rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s | |
5856 | fi | |
5857 | ]) | |
5858 | if test x"$gcc_cv_ld_no_dot_syms" = xyes; then | |
5859 | AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, | |
5860 | [Define if your PowerPC64 linker only needs function descriptor syms.]) | |
5861 | fi | |
5862 | ||
5863 | AC_CACHE_CHECK(linker large toc support, | |
5864 | gcc_cv_ld_large_toc, | |
5865 | [gcc_cv_ld_large_toc=no | |
5866 | if test x"$ld_is_gold" = xyes; then | |
5867 | gcc_cv_ld_large_toc=yes | |
5868 | elif test $in_tree_ld = yes ; then | |
5869 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then | |
5870 | gcc_cv_ld_large_toc=yes | |
5871 | fi | |
5872 | elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then | |
5873 | cat > conftest.s <<EOF | |
5874 | .section ".tbss","awT",@nobits | |
5875 | .align 3 | |
5876 | ie0: .space 8 | |
5877 | .global _start | |
5878 | .text | |
5879 | _start: | |
5880 | addis 9,13,ie0@got@tprel@ha | |
5881 | ld 9,ie0@got@tprel@l(9) | |
5882 | EOF | |
5883 | if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ | |
5884 | && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then | |
5885 | gcc_cv_ld_large_toc=yes | |
5886 | fi | |
5887 | rm -f conftest conftest.o conftest.s | |
5888 | fi | |
5889 | ]) | |
5890 | if test x"$gcc_cv_ld_large_toc" = xyes; then | |
5891 | AC_DEFINE(HAVE_LD_LARGE_TOC, 1, | |
5892 | [Define if your PowerPC64 linker supports a large TOC.]) | |
5893 | fi | |
5894 | ||
5895 | AC_CACHE_CHECK(linker toc pointer alignment, | |
5896 | gcc_cv_ld_toc_align, | |
5897 | [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then | |
5898 | cat > conftest.s <<EOF | |
5899 | .global _start | |
5900 | .text | |
5901 | _start: | |
5902 | addis 9,2,x@got@ha | |
5903 | .section .data.rel.ro,"aw",@progbits | |
5904 | .p2align 16 | |
5905 | .space 32768 | |
5906 | x: .quad .TOC. | |
5907 | EOF | |
5908 | if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ | |
5909 | && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then | |
5910 | gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'` | |
5911 | fi | |
5912 | rm -f conftest conftest.o conftest.s | |
5913 | fi | |
5914 | ]) | |
5915 | if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then | |
5916 | AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align, | |
5917 | [Define to .TOC. alignment forced by your linker.]) | |
5918 | fi | |
5919 | ;; | |
5920 | esac | |
5921 | ||
5922 | case "$target" in | |
5923 | *-*-aix*) | |
5924 | AC_CACHE_CHECK(linker large toc support, | |
5925 | gcc_cv_ld_large_toc, | |
5926 | [gcc_cv_ld_large_toc=no | |
5927 | if test x$gcc_cv_as != x ; then | |
5928 | cat > conftest.s <<EOF | |
5929 | .toc | |
5930 | LC..1: | |
5931 | .tc a[[TC]],a[[RW]] | |
5932 | .extern a[[RW]] | |
5933 | .csect .text[[PR]] | |
5934 | .largetoctest: | |
5935 | addis 9,LC..1@u(2) | |
5936 | ld 3,LC..1@l(9) | |
5937 | EOF | |
5938 | if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then | |
5939 | gcc_cv_ld_large_toc=yes | |
5940 | fi | |
5941 | rm -f conftest conftest.o conftest.s | |
5942 | fi | |
5943 | ]) | |
5944 | if test x"$gcc_cv_ld_large_toc" = xyes; then | |
5945 | AC_DEFINE(HAVE_LD_LARGE_TOC, 1, | |
5946 | [Define if your PowerPC64 linker supports a large TOC.]) | |
5947 | fi | |
5948 | ;; | |
5949 | esac | |
5950 | ||
5951 | AC_CACHE_CHECK(linker --build-id support, | |
5952 | gcc_cv_ld_buildid, | |
5953 | [gcc_cv_ld_buildid=no | |
5954 | if test $in_tree_ld = yes ; then | |
5955 | if test "$gcc_cv_gld_major_version" -eq 2 -a \ | |
5956 | "$gcc_cv_gld_minor_version" -ge 18 -o \ | |
5957 | "$gcc_cv_gld_major_version" -gt 2 \ | |
5958 | && test $in_tree_ld_is_elf = yes; then | |
5959 | gcc_cv_ld_buildid=yes | |
5960 | fi | |
5961 | elif test x$gcc_cv_ld != x; then | |
5962 | if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then | |
5963 | gcc_cv_ld_buildid=yes | |
5964 | fi | |
5965 | fi]) | |
5966 | if test x"$gcc_cv_ld_buildid" = xyes; then | |
5967 | AC_DEFINE(HAVE_LD_BUILDID, 1, | |
5968 | [Define if your linker supports --build-id.]) | |
5969 | fi | |
5970 | ||
5971 | AC_ARG_ENABLE(linker-build-id, | |
5972 | [AS_HELP_STRING([--enable-linker-build-id], | |
5973 | [compiler will always pass --build-id to linker])], | |
5974 | [], | |
5975 | enable_linker_build_id=no) | |
5976 | ||
5977 | if test x"$enable_linker_build_id" = xyes; then | |
5978 | if test x"$gcc_cv_ld_buildid" = xyes; then | |
5979 | AC_DEFINE(ENABLE_LD_BUILDID, 1, | |
5980 | [Define if gcc should always pass --build-id to linker.]) | |
5981 | else | |
5982 | AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) | |
5983 | fi | |
5984 | fi | |
5985 | ||
5986 | # In binutils 2.21, GNU ld gained support for new emulations fully | |
5987 | # supporting the Solaris 2 ABI. Detect their presence in the linker used. | |
5988 | AC_CACHE_CHECK(linker *_sol2 emulation support, | |
5989 | gcc_cv_ld_sol2_emulation, | |
5990 | [gcc_cv_ld_sol2_emulation=no | |
5991 | if test $in_tree_ld = yes ; then | |
5992 | if test "$gcc_cv_gld_major_version" -eq 2 -a \ | |
5993 | "$gcc_cv_gld_minor_version" -ge 21 -o \ | |
5994 | "$gcc_cv_gld_major_version" -gt 2 \ | |
5995 | && test $in_tree_ld_is_elf = yes; then | |
5996 | gcc_cv_ld_sol2_emulation=yes | |
5997 | fi | |
5998 | elif test x$gcc_cv_ld != x; then | |
5999 | if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ | |
6000 | grep _sol2 > /dev/null; then | |
6001 | gcc_cv_ld_sol2_emulation=yes | |
6002 | fi | |
6003 | fi]) | |
6004 | if test x"$gcc_cv_ld_sol2_emulation" = xyes; then | |
6005 | AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, | |
6006 | [Define if your linker supports the *_sol2 emulations.]) | |
6007 | fi | |
6008 | ||
6009 | AC_CACHE_CHECK(linker --sysroot support, | |
6010 | gcc_cv_ld_sysroot, | |
6011 | [gcc_cv_ld_sysroot=no | |
6012 | if test $in_tree_ld = yes ; then | |
6013 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then | |
6014 | gcc_cv_ld_sysroot=yes | |
6015 | fi | |
6016 | elif test x$gcc_cv_ld != x; then | |
6017 | if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then | |
6018 | gcc_cv_ld_sysroot=yes | |
6019 | fi | |
6020 | fi]) | |
6021 | if test x"$gcc_cv_ld_sysroot" = xyes; then | |
6022 | AC_DEFINE(HAVE_LD_SYSROOT, 1, | |
6023 | [Define if your linker supports --sysroot.]) | |
6024 | fi | |
6025 | ||
6026 | case $target in | |
6027 | *-*-solaris2*) | |
6028 | # Check for system-provided CRTs on Solaris 11.x and Solaris 12. | |
6029 | AC_CACHE_CHECK([system-provided CRTs on Solaris], | |
6030 | gcc_cv_solaris_crts, | |
6031 | [gcc_cv_solaris_crts=no | |
6032 | if test x$host != x$target; then | |
6033 | if test "x$with_sysroot" = xyes; then | |
6034 | target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root" | |
6035 | else | |
6036 | target_sysroot="${with_sysroot}" | |
6037 | fi | |
6038 | fi | |
6039 | target_libdir="$target_sysroot/usr/lib" | |
6040 | # At the time they were added, gcrt1.o became a symlink for backwards | |
6041 | # compatibility on x86, while crt1.o was added on sparc, so check for that. | |
6042 | case $target in | |
6043 | i?86-*-solaris2* | x86_64-*-solaris2*) | |
6044 | if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi | |
6045 | ;; | |
6046 | sparc*-*-solaris2*) | |
6047 | if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi | |
6048 | ;; | |
6049 | esac]) | |
6050 | ;; | |
6051 | esac | |
6052 | if test x$gcc_cv_solaris_crts = xyes; then | |
6053 | AC_DEFINE(HAVE_SOLARIS_CRTS, 1, | |
6054 | [Define if the system-provided CRTs are present on Solaris.]) | |
6055 | fi | |
6056 | ||
6057 | AC_ARG_ENABLE(libssp, | |
6058 | [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])], | |
6059 | [case "${enableval}" in | |
6060 | yes|no) | |
6061 | ;; | |
6062 | *) | |
6063 | AC_MSG_ERROR([unknown libssp setting $enableval]) | |
6064 | ;; | |
6065 | esac], []) | |
6066 | ||
6067 | # Test for stack protector support in target C library. | |
6068 | AC_CACHE_CHECK(__stack_chk_fail in target C library, | |
6069 | gcc_cv_libc_provides_ssp, | |
6070 | [gcc_cv_libc_provides_ssp=no | |
6071 | if test "x$enable_libssp" = "xno"; then | |
6072 | gcc_cv_libc_provides_ssp=yes | |
6073 | elif test "x$enable_libssp" = "xyes"; then | |
6074 | gcc_cv_libc_provides_ssp=no | |
6075 | else | |
6076 | case "$target" in | |
6077 | *-*-musl*) | |
6078 | # All versions of musl provide stack protector | |
6079 | gcc_cv_libc_provides_ssp=yes;; | |
6080 | *-*-linux* | *-*-kfreebsd*-gnu) | |
6081 | # glibc 2.4 and later provides __stack_chk_fail and | |
6082 | # either __stack_chk_guard, or TLS access to stack guard canary. | |
6083 | GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [ | |
6084 | [if test -f $target_header_dir/features.h \ | |
6085 | && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ | |
6086 | $target_header_dir/features.h > /dev/null; then | |
6087 | if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ | |
6088 | $target_header_dir/features.h > /dev/null && \ | |
6089 | test -f $target_header_dir/bits/uClibc_config.h && \ | |
6090 | $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ | |
6091 | $target_header_dir/bits/uClibc_config.h > /dev/null; then | |
6092 | gcc_cv_libc_provides_ssp=yes | |
6093 | fi | |
6094 | # all versions of Bionic support stack protector | |
6095 | elif test -f $target_header_dir/sys/cdefs.h \ | |
6096 | && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \ | |
6097 | $target_header_dir/sys/cdefs.h > /dev/null; then | |
6098 | gcc_cv_libc_provides_ssp=yes | |
6099 | fi]]) | |
6100 | ;; | |
6101 | *-*-gnu*) | |
6102 | # Avoid complicated tests (see | |
6103 | # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now | |
6104 | # simply assert that glibc does provide this, which is true for all | |
6105 | # realistically usable GNU/Hurd configurations. | |
6106 | # All supported versions of musl provide it as well | |
6107 | gcc_cv_libc_provides_ssp=yes;; | |
6108 | *-*-darwin* | *-*-freebsd* | *-*-netbsd*) | |
6109 | AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], | |
6110 | [echo "no __stack_chk_fail on this target"]) | |
6111 | ;; | |
6112 | *) gcc_cv_libc_provides_ssp=no ;; | |
6113 | esac | |
6114 | fi]) | |
6115 | ||
6116 | if test x$gcc_cv_libc_provides_ssp = xyes; then | |
6117 | AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, | |
6118 | [Define if your target C library provides stack protector support]) | |
6119 | fi | |
6120 | ||
6121 | # Check whether --enable-default-ssp was given. | |
6122 | AC_ARG_ENABLE(default-ssp, | |
6123 | [AS_HELP_STRING([--enable-default-ssp], | |
6124 | [enable Stack Smashing Protection as default])],[ | |
6125 | if test x$gcc_cv_libc_provides_ssp = xyes; then | |
6126 | case "$target" in | |
6127 | ia64*-*-*) enable_default_ssp=no ;; | |
6128 | *) enable_default_ssp=$enableval ;; | |
6129 | esac | |
6130 | else | |
6131 | enable_default_ssp=no | |
6132 | fi], | |
6133 | enable_default_ssp=no) | |
6134 | if test x$enable_default_ssp = xyes ; then | |
6135 | AC_DEFINE(ENABLE_DEFAULT_SSP, 1, | |
6136 | [Define if your target supports default stack protector and it is enabled.]) | |
6137 | fi | |
6138 | AC_SUBST([enable_default_ssp]) | |
6139 | ||
6140 | # Test for <sys/sdt.h> on the target. | |
6141 | GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H]) | |
6142 | AC_MSG_CHECKING(sys/sdt.h in the target C library) | |
6143 | have_sys_sdt_h=no | |
6144 | if test -f $target_header_dir/sys/sdt.h; then | |
6145 | have_sys_sdt_h=yes | |
6146 | AC_DEFINE(HAVE_SYS_SDT_H, 1, | |
6147 | [Define if your target C library provides sys/sdt.h]) | |
6148 | fi | |
6149 | AC_MSG_RESULT($have_sys_sdt_h) | |
6150 | ||
6151 | # Check if TFmode long double should be used by default or not. | |
6152 | # Some glibc targets used DFmode long double, but with glibc 2.4 | |
6153 | # and later they can use TFmode. | |
6154 | case "$target" in | |
6155 | powerpc*-*-linux* | \ | |
6156 | sparc*-*-linux* | \ | |
6157 | s390*-*-linux* | \ | |
6158 | alpha*-*-linux*) | |
6159 | AC_ARG_WITH(long-double-128, | |
6160 | [AS_HELP_STRING([--with-long-double-128], | |
6161 | [use 128-bit long double by default])], | |
6162 | gcc_cv_target_ldbl128="$with_long_double_128", [ | |
6163 | case "$target" in | |
6164 | s390*-*-linux-musl*) | |
6165 | gcc_cv_target_ldbl128=yes | |
6166 | ;; | |
6167 | powerpc*-*-linux-musl*) | |
6168 | gcc_cv_target_ldbl128=no | |
6169 | ;; | |
6170 | *)] | |
6171 | [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [ | |
6172 | [gcc_cv_target_ldbl128=no | |
6173 | grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ | |
6174 | $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \ | |
6175 | && gcc_cv_target_ldbl128=yes | |
6176 | ]])] | |
6177 | [ | |
6178 | ;; | |
6179 | esac | |
6180 | ]) | |
6181 | ;; | |
6182 | esac | |
6183 | if test x$gcc_cv_target_ldbl128 = xyes; then | |
6184 | AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, | |
6185 | [Define if TFmode long double should be the default]) | |
6186 | fi | |
6187 | ||
6188 | # Check if TFmode long double target should use the IBM extended double or IEEE | |
6189 | # 128-bit floating point formats if long doubles are 128-bits long. The long | |
6190 | # double type can only be switched on powerpc64 bit Linux systems where VSX is | |
6191 | # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in | |
6192 | # libgcc. | |
6193 | AC_ARG_WITH([long-double-format], | |
6194 | [AS_HELP_STRING([--with-long-double-format={ieee,ibm}] | |
6195 | [Specify whether PowerPC long double uses IEEE or IBM format])],[ | |
6196 | case "$target:$with_long_double_format" in | |
6197 | powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm) | |
6198 | : | |
6199 | ;; | |
6200 | powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm) | |
6201 | # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems | |
6202 | case "$with_cpu" in | |
6203 | power7 | power8 | power9 | power1*) | |
6204 | : | |
6205 | ;; | |
6206 | *) | |
6207 | AC_MSG_ERROR([Configuration option --with-long-double-format is only \ | |
6208 | supported if the default cpu is power7 or newer]) | |
6209 | with_long_double_format="" | |
6210 | ;; | |
6211 | esac | |
6212 | ;; | |
6213 | xpowerpc64*-*-linux*:*) | |
6214 | AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee]) | |
6215 | with_long_double_format="" | |
6216 | ;; | |
6217 | *) | |
6218 | AC_MSG_ERROR([Configure option --with-long-double-format is only supported \ | |
6219 | on 64-bit PowerPC VSX Linux systems]) | |
6220 | with_long_double_format="" | |
6221 | ;; | |
6222 | esac], | |
6223 | []) | |
6224 | ||
6225 | # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP | |
6226 | # values in the TCB. Currently, only GLIBC 2.23 and later support this. | |
6227 | gcc_cv_libc_provides_hwcap_in_tcb=no | |
6228 | case "$target" in | |
6229 | powerpc*-*-linux*) | |
6230 | GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], ) | |
6231 | ;; | |
6232 | esac | |
6233 | if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then | |
6234 | AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1, | |
6235 | [Define if your target C Library provides the AT_HWCAP value in the TCB]) | |
6236 | fi | |
6237 | ||
6238 | AC_MSG_CHECKING(dl_iterate_phdr in target C library) | |
6239 | gcc_cv_target_dl_iterate_phdr=unknown | |
6240 | case "$target" in | |
6241 | *-*-solaris2*) | |
6242 | # <link.h> needs both a dl_iterate_phdr declaration and support for | |
6243 | # compilation with largefile support. | |
6244 | if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \ | |
6245 | && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then | |
6246 | gcc_cv_target_dl_iterate_phdr=yes | |
6247 | else | |
6248 | gcc_cv_target_dl_iterate_phdr=no | |
6249 | fi | |
6250 | ;; | |
6251 | *-*-dragonfly* | *-*-freebsd*) | |
6252 | if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then | |
6253 | gcc_cv_target_dl_iterate_phdr=yes | |
6254 | else | |
6255 | gcc_cv_target_dl_iterate_phdr=no | |
6256 | fi | |
6257 | ;; | |
6258 | *-linux-musl*) | |
6259 | gcc_cv_target_dl_iterate_phdr=yes | |
6260 | ;; | |
6261 | esac | |
6262 | GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) | |
6263 | if test x$gcc_cv_target_dl_iterate_phdr = xyes; then | |
6264 | AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1, | |
6265 | [Define if your target C library provides the `dl_iterate_phdr' function.]) | |
6266 | fi | |
6267 | AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr) | |
6268 | ||
6269 | # We no longer support different GC mechanisms. Emit an error if | |
6270 | # the user configures with --with-gc. | |
6271 | AC_ARG_WITH(gc, | |
6272 | [AS_HELP_STRING([--with-gc={page,zone}], | |
6273 | [this option is not supported anymore. It used to choose | |
6274 | the garbage collection mechanism to use with the compiler])], | |
6275 | [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])], | |
6276 | []) | |
6277 | ||
6278 | # Libraries to use on the host. This will normally be set by the top | |
6279 | # level Makefile. Here we simply capture the value for our Makefile. | |
6280 | if test -z "${HOST_LIBS+set}"; then | |
6281 | HOST_LIBS= | |
6282 | fi | |
6283 | AC_SUBST(HOST_LIBS) | |
6284 | ||
6285 | # Use the system's zlib library. | |
6286 | AM_ZLIB | |
6287 | ||
6288 | dnl Very limited version of automake's enable-maintainer-mode | |
6289 | ||
6290 | AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) | |
6291 | dnl maintainer-mode is disabled by default | |
6292 | AC_ARG_ENABLE(maintainer-mode, | |
6293 | [AS_HELP_STRING([--enable-maintainer-mode], | |
6294 | [enable make rules and dependencies not useful | |
6295 | (and sometimes confusing) to the casual installer])], | |
6296 | maintainer_mode=$enableval, | |
6297 | maintainer_mode=no) | |
6298 | ||
6299 | AC_MSG_RESULT($maintainer_mode) | |
6300 | ||
6301 | if test "$maintainer_mode" = "yes"; then | |
6302 | MAINT='' | |
6303 | else | |
6304 | MAINT='#' | |
6305 | fi | |
6306 | AC_SUBST(MAINT)dnl | |
6307 | ||
6308 | dnl Whether to prevent multiple front-ends from linking at the same time | |
6309 | ||
6310 | AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once]) | |
6311 | AC_ARG_ENABLE(link-mutex, | |
6312 | [AS_HELP_STRING([--enable-link-mutex], | |
6313 | [avoid linking multiple front-ends at once to avoid thrashing | |
6314 | on the build machine])], | |
6315 | do_link_mutex=$enableval, | |
6316 | do_link_mutex=no) | |
6317 | AC_MSG_RESULT($do_link_mutex) | |
6318 | ||
6319 | if test "$do_link_mutex" = "yes"; then | |
6320 | DO_LINK_MUTEX=true | |
6321 | else | |
6322 | DO_LINK_MUTEX=false | |
6323 | fi | |
6324 | AC_SUBST(DO_LINK_MUTEX) | |
6325 | ||
6326 | # -------------- | |
6327 | # Language hooks | |
6328 | # -------------- | |
6329 | ||
6330 | # Make empty files to contain the specs and options for each language. | |
6331 | # Then add #include lines to for a compiler that has specs and/or options. | |
6332 | ||
6333 | subdirs= | |
6334 | lang_opt_files= | |
6335 | lang_specs_files= | |
6336 | lang_tree_files= | |
6337 | # These (without "all_") are set in each config-lang.in. | |
6338 | # `language' must be a single word so is spelled singularly. | |
6339 | all_languages= | |
6340 | all_compilers= | |
6341 | all_outputs='Makefile' | |
6342 | # List of language configure and makefile fragments. | |
6343 | all_lang_configurefrags= | |
6344 | all_lang_makefrags= | |
6345 | # Additional files for gengtype | |
6346 | all_gtfiles="$target_gtfiles" | |
6347 | ||
6348 | # These are the languages that are set in --enable-languages, | |
6349 | # and are available in the GCC tree. | |
6350 | all_selected_languages= | |
6351 | ||
6352 | # Add the language fragments. | |
6353 | # Languages are added via two mechanisms. Some information must be | |
6354 | # recorded in makefile variables, these are defined in config-lang.in. | |
6355 | # We accumulate them and plug them into the main Makefile. | |
6356 | # The other mechanism is a set of hooks for each of the main targets | |
6357 | # like `clean', `install', etc. | |
6358 | ||
6359 | language_hooks="Make-hooks" | |
6360 | ||
6361 | for lang in ${srcdir}/*/config-lang.in | |
6362 | do | |
6363 | changequote(,)dnl | |
6364 | test "$lang" = "${srcdir}/*/config-lang.in" && continue | |
6365 | ||
6366 | lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` | |
6367 | if test "x$lang_alias" = x | |
6368 | then | |
6369 | echo "$lang doesn't set \$language." 1>&2 | |
6370 | exit 1 | |
6371 | fi | |
6372 | subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" | |
6373 | subdirs="$subdirs $subdir" | |
6374 | ||
6375 | # $gcc_subdir is where the gcc integration files are to be found | |
6376 | # for a language, both for internal compiler purposes (compiler | |
6377 | # sources implementing front-end to GCC tree converters), and for | |
6378 | # build infrastructure purposes (Make-lang.in, etc.) | |
6379 | # | |
6380 | # This will be <subdir> (relative to $srcdir) if a line like | |
6381 | # gcc_subdir="<subdir>" or gcc_subdir=<subdir> | |
6382 | # is found in <langdir>/config-lang.in, and will remain <langdir> | |
6383 | # otherwise. | |
6384 | # | |
6385 | # Except for the language alias (fetched above), the regular | |
6386 | # "config-lang.in" contents are always retrieved from $gcc_subdir, | |
6387 | # so a <langdir>/config-lang.in setting gcc_subdir typically sets | |
6388 | # only this and the language alias. | |
6389 | ||
6390 | gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang` | |
6391 | if [ "$gcc_subdir" = "" ]; then | |
6392 | gcc_subdir="$subdir" | |
6393 | fi | |
6394 | ||
6395 | case ",$enable_languages," in | |
6396 | *,$lang_alias,*) | |
6397 | all_selected_languages="$all_selected_languages $lang_alias" | |
6398 | if test -f $srcdir/$gcc_subdir/lang-specs.h; then | |
6399 | lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h" | |
6400 | fi | |
6401 | ;; | |
6402 | esac | |
6403 | changequote([,])dnl | |
6404 | ||
6405 | language= | |
6406 | boot_language= | |
6407 | compilers= | |
6408 | outputs= | |
6409 | gtfiles= | |
6410 | subdir_requires= | |
6411 | . ${srcdir}/$gcc_subdir/config-lang.in | |
6412 | if test "x$language" = x | |
6413 | then | |
6414 | echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2 | |
6415 | exit 1 | |
6416 | fi | |
6417 | ||
6418 | ok=: | |
6419 | case ",$enable_languages," in | |
6420 | *,$lang_alias,*) ;; | |
6421 | *) | |
6422 | for i in $subdir_requires; do | |
6423 | test -f "${srcdir}/$i/config-lang.in" && continue | |
6424 | ok=false | |
6425 | break | |
6426 | done | |
6427 | ;; | |
6428 | esac | |
6429 | $ok || continue | |
6430 | ||
6431 | all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in" | |
6432 | all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in" | |
6433 | if test -f $srcdir/$gcc_subdir/lang.opt; then | |
6434 | lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt" | |
6435 | all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt" | |
6436 | fi | |
6437 | if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then | |
6438 | lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def" | |
6439 | fi | |
6440 | all_languages="$all_languages $language" | |
6441 | all_compilers="$all_compilers $compilers" | |
6442 | all_outputs="$all_outputs $outputs" | |
6443 | all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" | |
6444 | case ",$enable_languages," in | |
6445 | *,lto,*) | |
6446 | AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) | |
6447 | enable_lto=yes | |
6448 | AC_SUBST(enable_lto) | |
6449 | ;; | |
6450 | *) ;; | |
6451 | esac | |
6452 | done | |
6453 | ||
6454 | check_languages= | |
6455 | for language in $all_selected_languages | |
6456 | do | |
6457 | check_languages="$check_languages check-$language" | |
6458 | done | |
6459 | ||
6460 | selftest_languages= | |
6461 | for language in $all_selected_languages | |
6462 | do | |
6463 | selftest_languages="$selftest_languages selftest-$language" | |
6464 | done | |
6465 | ||
6466 | # We link each language in with a set of hooks, reached indirectly via | |
6467 | # lang.${target}. Only do so for selected languages. | |
6468 | ||
6469 | rm -f Make-hooks | |
6470 | touch Make-hooks | |
6471 | target_list="all.cross start.encap rest.encap tags \ | |
6472 | install-common install-man install-info install-pdf install-html dvi \ | |
6473 | pdf html uninstall info man srcextra srcman srcinfo \ | |
6474 | mostlyclean clean distclean maintainer-clean install-plugin" | |
6475 | ||
6476 | for t in $target_list | |
6477 | do | |
6478 | x= | |
6479 | for lang in $all_selected_languages | |
6480 | do | |
6481 | x="$x $lang.$t" | |
6482 | done | |
6483 | echo "lang.$t: $x" >> Make-hooks | |
6484 | done | |
6485 | ||
6486 | # -------- | |
6487 | # Option include files | |
6488 | # -------- | |
6489 | ||
6490 | ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk | |
6491 | option_includes="option-includes.mk" | |
6492 | AC_SUBST_FILE(option_includes) | |
6493 | ||
6494 | # -------- | |
6495 | # UNSORTED | |
6496 | # -------- | |
6497 | ||
6498 | # Create .gdbinit. | |
6499 | ||
6500 | echo "dir ." > .gdbinit | |
6501 | echo "dir ${srcdir}" >> .gdbinit | |
6502 | if test x$gdb_needs_out_file_path = xyes | |
6503 | then | |
6504 | echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit | |
6505 | fi | |
6506 | if test "x$subdirs" != x; then | |
6507 | for s in $subdirs | |
6508 | do | |
6509 | echo "dir ${srcdir}/$s" >> .gdbinit | |
6510 | done | |
6511 | fi | |
6512 | echo "source ${srcdir}/gdbinit.in" >> .gdbinit | |
6513 | echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit | |
6514 | ||
6515 | # Put a breakpoint on __asan_report_error to help with debugging buffer | |
6516 | # overflow. | |
6517 | case "$CFLAGS" in | |
6518 | *-fsanitize=address*) | |
6519 | echo "source ${srcdir}/gdbasan.in" >> .gdbinit | |
6520 | ;; | |
6521 | esac | |
6522 | ||
6523 | gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)' | |
6524 | AC_SUBST(gcc_tooldir) | |
6525 | AC_SUBST(dollar) | |
6526 | ||
6527 | # Find a directory in which to install a shared libgcc. | |
6528 | ||
6529 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
6530 | [AS_HELP_STRING([--enable-version-specific-runtime-libs], | |
6531 | [specify that runtime libraries should be | |
6532 | installed in a compiler-specific directory])]) | |
6533 | ||
6534 | # Substitute configuration variables | |
6535 | AC_SUBST(subdirs) | |
6536 | AC_SUBST(srcdir) | |
6537 | AC_SUBST(all_compilers) | |
6538 | AC_SUBST(all_gtfiles) | |
6539 | AC_SUBST(all_lang_configurefrags) | |
6540 | AC_SUBST(all_lang_makefrags) | |
6541 | AC_SUBST(all_languages) | |
6542 | AC_SUBST(all_selected_languages) | |
6543 | AC_SUBST(build_exeext) | |
6544 | AC_SUBST(build_install_headers_dir) | |
6545 | AC_SUBST(build_xm_file_list) | |
6546 | AC_SUBST(build_xm_include_list) | |
6547 | AC_SUBST(build_xm_defines) | |
6548 | AC_SUBST(build_file_translate) | |
6549 | AC_SUBST(check_languages) | |
6550 | AC_SUBST(selftest_languages) | |
6551 | AC_SUBST(cpp_install_dir) | |
6552 | AC_SUBST(xmake_file) | |
6553 | AC_SUBST(tmake_file) | |
6554 | AC_SUBST(TM_ENDIAN_CONFIG) | |
6555 | AC_SUBST(TM_MULTILIB_CONFIG) | |
6556 | AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) | |
6557 | AC_SUBST(extra_gcc_objs) | |
6558 | AC_SUBST(user_headers_inc_next_pre) | |
6559 | AC_SUBST(user_headers_inc_next_post) | |
6560 | AC_SUBST(extra_headers_list) | |
6561 | AC_SUBST(extra_objs) | |
6562 | AC_SUBST(extra_programs) | |
6563 | AC_SUBST(float_h_file) | |
6564 | AC_SUBST(gcc_config_arguments) | |
6565 | AC_SUBST(gcc_gxx_include_dir) | |
6566 | AC_SUBST(gcc_gxx_include_dir_add_sysroot) | |
6567 | AC_SUBST(host_exeext) | |
6568 | AC_SUBST(host_xm_file_list) | |
6569 | AC_SUBST(host_xm_include_list) | |
6570 | AC_SUBST(host_xm_defines) | |
6571 | AC_SUBST(out_host_hook_obj) | |
6572 | AC_SUBST(install) | |
6573 | AC_SUBST(lang_opt_files) | |
6574 | AC_SUBST(lang_specs_files) | |
6575 | AC_SUBST(lang_tree_files) | |
6576 | AC_SUBST(local_prefix) | |
6577 | AC_SUBST(md_file) | |
6578 | AC_SUBST(objc_boehm_gc) | |
6579 | AC_SUBST(out_file) | |
6580 | AC_SUBST(out_object_file) | |
6581 | AC_SUBST(common_out_file) | |
6582 | AC_SUBST(common_out_object_file) | |
6583 | AC_SUBST(tm_file_list) | |
6584 | AC_SUBST(tm_include_list) | |
6585 | AC_SUBST(tm_defines) | |
6586 | AC_SUBST(tm_p_file_list) | |
6587 | AC_SUBST(tm_p_include_list) | |
6588 | AC_SUBST(tm_d_file_list) | |
6589 | AC_SUBST(tm_d_include_list) | |
6590 | AC_SUBST(xm_file_list) | |
6591 | AC_SUBST(xm_include_list) | |
6592 | AC_SUBST(xm_defines) | |
6593 | AC_SUBST(use_gcc_stdint) | |
6594 | AC_SUBST(c_target_objs) | |
6595 | AC_SUBST(cxx_target_objs) | |
6596 | AC_SUBST(fortran_target_objs) | |
6597 | AC_SUBST(d_target_objs) | |
6598 | AC_SUBST(target_cpu_default) | |
6599 | ||
6600 | AC_SUBST_FILE(language_hooks) | |
6601 | ||
6602 | # Echo link setup. | |
6603 | if test x${build} = x${host} ; then | |
6604 | if test x${host} = x${target} ; then | |
6605 | echo "Links are now set up to build a native compiler for ${target}." 1>&2 | |
6606 | else | |
6607 | echo "Links are now set up to build a cross-compiler" 1>&2 | |
6608 | echo " from ${host} to ${target}." 1>&2 | |
6609 | fi | |
6610 | else | |
6611 | if test x${host} = x${target} ; then | |
6612 | echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 | |
6613 | echo " for ${target}." 1>&2 | |
6614 | else | |
6615 | echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 | |
6616 | echo " from ${host} to ${target}." 1>&2 | |
6617 | fi | |
6618 | fi | |
6619 | ||
6620 | AC_ARG_VAR(GMPLIBS,[How to link GMP]) | |
6621 | AC_ARG_VAR(GMPINC,[How to find GMP include files]) | |
6622 | ||
6623 | AC_ARG_VAR(ISLLIBS,[How to link isl]) | |
6624 | AC_ARG_VAR(ISLINC,[How to find isl include files]) | |
6625 | if test "x${ISLLIBS}" != "x" ; then | |
6626 | AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.]) | |
6627 | fi | |
6628 | ||
6629 | GCC_ENABLE_PLUGINS | |
6630 | AC_SUBST(pluginlibs) | |
6631 | AC_SUBST(enable_plugin) | |
6632 | if test x"$enable_plugin" = x"yes"; then | |
6633 | AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) | |
6634 | fi | |
6635 | ||
6636 | ||
6637 | # Enable --enable-host-shared | |
6638 | AC_ARG_ENABLE(host-shared, | |
6639 | [AS_HELP_STRING([--enable-host-shared], | |
6640 | [build host code as shared libraries])], | |
6641 | [PICFLAG=-fPIC], [PICFLAG=]) | |
6642 | AC_SUBST(enable_host_shared) | |
6643 | AC_SUBST(PICFLAG) | |
6644 | ||
6645 | ||
6646 | AC_ARG_ENABLE(libquadmath-support, | |
6647 | [AS_HELP_STRING([--disable-libquadmath-support], | |
6648 | [disable libquadmath support for Fortran])], | |
6649 | ENABLE_LIBQUADMATH_SUPPORT=$enableval, | |
6650 | ENABLE_LIBQUADMATH_SUPPORT=yes) | |
6651 | if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then | |
6652 | AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1, | |
6653 | [Define to 1 to enable libquadmath support]) | |
6654 | fi | |
6655 | ||
6656 | ||
6657 | # Specify what hash style to use by default. | |
6658 | AC_ARG_WITH([linker-hash-style], | |
6659 | [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}], | |
6660 | [specify the linker hash style])], | |
6661 | [case x"$withval" in | |
6662 | xsysv) | |
6663 | LINKER_HASH_STYLE=sysv | |
6664 | ;; | |
6665 | xgnu) | |
6666 | LINKER_HASH_STYLE=gnu | |
6667 | ;; | |
6668 | xboth) | |
6669 | LINKER_HASH_STYLE=both | |
6670 | ;; | |
6671 | *) | |
6672 | AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style]) | |
6673 | ;; | |
6674 | esac], | |
6675 | [LINKER_HASH_STYLE='']) | |
6676 | if test x"${LINKER_HASH_STYLE}" != x; then | |
6677 | AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE", | |
6678 | [The linker hash style]) | |
6679 | fi | |
6680 | ||
6681 | # Specify what should be the default of -fdiagnostics-color option. | |
6682 | AC_ARG_WITH([diagnostics-color], | |
6683 | [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}], | |
6684 | [specify the default of -fdiagnostics-color option | |
6685 | auto-if-env stands for -fdiagnostics-color=auto if | |
6686 | GCC_COLOR environment variable is present and | |
6687 | -fdiagnostics-color=never otherwise])], | |
6688 | [case x"$withval" in | |
6689 | xnever) | |
6690 | DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO | |
6691 | ;; | |
6692 | xauto) | |
6693 | DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO | |
6694 | ;; | |
6695 | xauto-if-env) | |
6696 | DIAGNOSTICS_COLOR_DEFAULT=-1 | |
6697 | ;; | |
6698 | xalways) | |
6699 | DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES | |
6700 | ;; | |
6701 | *) | |
6702 | AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color]) | |
6703 | ;; | |
6704 | esac], | |
6705 | [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO]) | |
6706 | AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT, | |
6707 | [The default for -fdiagnostics-color option]) | |
6708 | ||
6709 | # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit | |
6710 | # of jit/jit-playback.c. | |
6711 | gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"` | |
6712 | echo "gcc_driver_version: ${gcc_driver_version}" | |
6713 | cat > gcc-driver-name.h <<EOF | |
6714 | #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}" | |
6715 | EOF | |
6716 | ||
6717 | # Check whether --enable-default-pie was given. | |
6718 | AC_ARG_ENABLE(default-pie, | |
6719 | [AS_HELP_STRING([--enable-default-pie], | |
6720 | [enable Position Independent Executable as default])], | |
6721 | enable_default_pie=$enableval, | |
6722 | enable_default_pie=no) | |
6723 | if test x$enable_default_pie = xyes ; then | |
6724 | AC_DEFINE(ENABLE_DEFAULT_PIE, 1, | |
6725 | [Define if your target supports default PIE and it is enabled.]) | |
6726 | fi | |
6727 | AC_SUBST([enable_default_pie]) | |
6728 | ||
6729 | # Check if -fno-PIE works. | |
6730 | AC_CACHE_CHECK([for -fno-PIE option], | |
6731 | [gcc_cv_c_no_fpie], | |
6732 | [saved_CXXFLAGS="$CXXFLAGS" | |
6733 | CXXFLAGS="$CXXFLAGS -fno-PIE" | |
6734 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], | |
6735 | [gcc_cv_c_no_fpie=yes], | |
6736 | [gcc_cv_c_no_fpie=no]) | |
6737 | CXXFLAGS="$saved_CXXFLAGS"]) | |
6738 | if test "$gcc_cv_c_no_fpie" = "yes"; then | |
6739 | NO_PIE_CFLAGS="-fno-PIE" | |
6740 | fi | |
6741 | AC_SUBST([NO_PIE_CFLAGS]) | |
6742 | ||
6743 | # Check if -no-pie works. | |
6744 | AC_CACHE_CHECK([for -no-pie option], | |
6745 | [gcc_cv_no_pie], | |
6746 | [saved_LDFLAGS="$LDFLAGS" | |
6747 | LDFLAGS="$LDFLAGS -no-pie" | |
6748 | AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], | |
6749 | [gcc_cv_no_pie=yes], | |
6750 | [gcc_cv_no_pie=no]) | |
6751 | LDFLAGS="$saved_LDFLAGS"]) | |
6752 | if test "$gcc_cv_no_pie" = "yes"; then | |
6753 | NO_PIE_FLAG="-no-pie" | |
6754 | fi | |
6755 | AC_SUBST([NO_PIE_FLAG]) | |
6756 | ||
6757 | # Check linker supports '-z bndplt' | |
6758 | ld_bndplt_support=no | |
6759 | AC_MSG_CHECKING(linker -z bndplt option) | |
6760 | if test x"$ld_is_gold" = xno; then | |
6761 | if test $in_tree_ld = yes ; then | |
6762 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then | |
6763 | ld_bndplt_support=yes | |
6764 | fi | |
6765 | elif test x$gcc_cv_ld != x; then | |
6766 | # Check if linker supports -a bndplt option | |
6767 | if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then | |
6768 | ld_bndplt_support=yes | |
6769 | fi | |
6770 | fi | |
6771 | fi | |
6772 | if test x"$ld_bndplt_support" = xyes; then | |
6773 | AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1, | |
6774 | [Define if your linker supports -z bndplt]) | |
6775 | fi | |
6776 | AC_MSG_RESULT($ld_bndplt_support) | |
6777 | ||
6778 | # Check linker supports '--push-state'/'--pop-state' | |
6779 | ld_pushpopstate_support=no | |
6780 | AC_MSG_CHECKING(linker --push-state/--pop-state options) | |
6781 | if test x"$ld_is_gold" = xno; then | |
6782 | if test $in_tree_ld = yes ; then | |
6783 | if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then | |
6784 | ld_pushpopstate_support=yes | |
6785 | fi | |
6786 | elif test x$gcc_cv_ld != x; then | |
6787 | # Check if linker supports --push-state/--pop-state options | |
6788 | if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then | |
6789 | ld_pushpopstate_support=yes | |
6790 | fi | |
6791 | fi | |
6792 | fi | |
6793 | if test x"$ld_pushpopstate_support" = xyes; then | |
6794 | AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1, | |
6795 | [Define if your linker supports --push-state/--pop-state]) | |
6796 | fi | |
6797 | AC_MSG_RESULT($ld_pushpopstate_support) | |
6798 | ||
6799 | # Configure the subdirectories | |
6800 | # AC_CONFIG_SUBDIRS($subdirs) | |
6801 | ||
6802 | # Create the Makefile | |
6803 | # and configure language subdirectories | |
6804 | AC_CONFIG_FILES($all_outputs) | |
6805 | ||
6806 | AC_CONFIG_COMMANDS([default], | |
6807 | [ | |
6808 | case ${CONFIG_HEADERS} in | |
6809 | *auto-host.h:config.in*) | |
6810 | echo > cstamp-h ;; | |
6811 | esac | |
6812 | # Make sure all the subdirs exist. | |
6813 | for d in $subdirs doc build common c-family | |
6814 | do | |
6815 | test -d $d || mkdir $d | |
6816 | done | |
6817 | ], | |
6818 | [subdirs='$subdirs']) | |
6819 | AC_OUTPUT | |
6820 |