2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2015 Free Software Foundation, Inc.
6 #This file is part of GCC.
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
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
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/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Used for constructing correct paths for offload compilers.
42 real_target_noncanonical=${target_noncanonical}
45 # Determine the target- and build-specific subdirectories
48 # Set program_transform_name
51 # Check for bogus environment variables.
52 # Test if LIBRARY_PATH contains the notation for the current directory
53 # since this would lead to problems installing/building glibc.
54 # LIBRARY_PATH contains the current directory if one of the following
56 # - one of the terminals (":" and ";") is the first or last sign
57 # - two terminals occur directly after each other
58 # - the path contains an element with a dot in it
59 AC_MSG_CHECKING(LIBRARY_PATH variable)
61 case ${LIBRARY_PATH} in
62 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
63 library_path_setting="contains current directory"
66 library_path_setting="ok"
70 AC_MSG_RESULT($library_path_setting)
71 if test "$library_path_setting" != "ok"; then
73 *** LIBRARY_PATH shouldn't contain the current directory when
74 *** building gcc. Please change the environment variable
75 *** and run configure again.])
78 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
79 # since this would lead to problems installing/building glibc.
80 # GCC_EXEC_PREFIX contains the current directory if one of the following
82 # - one of the terminals (":" and ";") is the first or last sign
83 # - two terminals occur directly after each other
84 # - the path contains an element with a dot in it
85 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
87 case ${GCC_EXEC_PREFIX} in
88 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
89 gcc_exec_prefix_setting="contains current directory"
92 gcc_exec_prefix_setting="ok"
96 AC_MSG_RESULT($gcc_exec_prefix_setting)
97 if test "$gcc_exec_prefix_setting" != "ok"; then
99 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
100 *** building gcc. Please change the environment variable
101 *** and run configure again.])
108 # Specify the local prefix
110 AC_ARG_WITH(local-prefix,
111 [AS_HELP_STRING([--with-local-prefix=DIR],
112 [specifies directory to put local include])],
113 [case "${withval}" in
114 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
116 *) local_prefix=$with_local_prefix ;;
119 # Default local prefix if it is empty
120 if test x$local_prefix = x; then
121 local_prefix=/usr/local
124 AC_ARG_WITH([native-system-header-dir],
125 [ --with-native-system-header-dir=dir
126 use dir as the directory to look for standard
127 system header files in. Defaults to /usr/include.],
129 case ${with_native_system_header_dir} in
130 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
131 /* | [[A-Za-z]]:[[\\/]]*) ;;
132 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
134 configured_native_system_header_dir="${withval}"
135 ], [configured_native_system_header_dir=])
137 AC_ARG_WITH(build-sysroot,
138 [AS_HELP_STRING([--with-build-sysroot=sysroot],
139 [use sysroot as the system root during the build])],
140 [if test x"$withval" != x ; then
141 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
143 [SYSROOT_CFLAGS_FOR_TARGET=])
144 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
146 if test "x$prefix" = xNONE; then
147 test_prefix=/usr/local
151 if test "x$exec_prefix" = xNONE; then
152 test_exec_prefix=$test_prefix
154 test_exec_prefix=$exec_prefix
158 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
159 [search for usr/lib, usr/include, et al, within DIR])],
161 case ${with_sysroot} in
163 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
165 case ${with_sysroot} in
166 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
167 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
170 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
171 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
173 case ${TARGET_SYSTEM_ROOT} in
174 "${test_prefix}"|"${test_prefix}/"*|\
175 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
176 '${prefix}'|'${prefix}/'*|\
177 '${exec_prefix}'|'${exec_prefix}/'*)
178 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
179 TARGET_SYSTEM_ROOT_DEFINE="$t"
184 TARGET_SYSTEM_ROOT_DEFINE=
185 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
187 AC_SUBST(TARGET_SYSTEM_ROOT)
188 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
189 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
191 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
192 # passed in by the toplevel make and thus we'd get different behavior
193 # depending on where we built the sources.
195 # Specify the g++ header file directory
196 AC_ARG_WITH(gxx-include-dir,
197 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
198 [specifies directory to put g++ header files])],
199 [case "${withval}" in
200 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
202 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
205 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
206 if test x${gcc_gxx_include_dir} = x; then
207 if test x${enable_version_specific_runtime_libs} = xyes; then
208 gcc_gxx_include_dir='${libsubdir}/include/c++'
210 libstdcxx_incdir='include/c++/$(version)'
211 if test x$host != x$target; then
212 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
214 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
218 gcc_gxx_include_dir_add_sysroot=0
219 if test "${with_sysroot+set}" = set; then
220 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
221 if test "${gcc_gxx_without_sysroot}"; then
222 if test x${with_sysroot} != x/; then
223 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
225 gcc_gxx_include_dir_add_sysroot=1
229 AC_ARG_WITH(cpp_install_dir,
230 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
231 [install the user visible C preprocessor in DIR
232 (relative to PREFIX) as well as PREFIX/bin])],
233 [if test x$withval = xyes; then
234 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
235 elif test x$withval != xno; then
236 cpp_install_dir=$withval
239 # We would like to our source tree to be readonly. However when releases or
240 # pre-releases are generated, the flex/bison generated files as well as the
241 # various formats of manuals need to be included along with the rest of the
242 # sources. Therefore we have --enable-generated-files-in-srcdir to do
245 AC_MSG_CHECKING([whether to place generated files in the source directory])
246 dnl generated-files-in-srcdir is disabled by default
247 AC_ARG_ENABLE(generated-files-in-srcdir,
248 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
249 [put copies of generated files in source dir
250 intended for creating source tarballs for users
251 without texinfo bison or flex])],
252 generated_files_in_srcdir=$enableval,
253 generated_files_in_srcdir=no)
255 AC_MSG_RESULT($generated_files_in_srcdir)
257 if test "$generated_files_in_srcdir" = "yes"; then
264 # -------------------
265 # Find default linker
266 # -------------------
270 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
271 gnu_ld_flag="$with_gnu_ld",
274 # With pre-defined ld
276 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
277 DEFAULT_LINKER="$with_ld")
278 if test x"${DEFAULT_LINKER+set}" = x"set"; then
279 if test ! -x "$DEFAULT_LINKER"; then
280 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
281 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
284 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
285 [Define to enable the use of a default linker.])
288 AC_MSG_CHECKING([whether a default linker was specified])
289 if test x"${DEFAULT_LINKER+set}" = x"set"; then
290 if test x"$gnu_ld_flag" = x"no"; then
291 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
293 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
299 # With demangler in GNU ld
300 AC_ARG_WITH(demangler-in-ld,
301 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
302 demangler_in_ld="$with_demangler_in_ld",
305 # ----------------------
306 # Find default assembler
307 # ----------------------
311 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
312 gas_flag="$with_gnu_as",
316 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
317 DEFAULT_ASSEMBLER="$with_as")
318 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
319 if test ! -x "$DEFAULT_ASSEMBLER"; then
320 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
321 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
324 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
325 [Define to enable the use of a default assembler.])
328 AC_MSG_CHECKING([whether a default assembler was specified])
329 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
330 if test x"$gas_flag" = x"no"; then
331 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
333 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
343 # If a non-executable a.out is present (e.g. created by GNU as above even if
344 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
345 # file, even when creating an executable, so an execution test fails.
346 # Remove possible default executable files to avoid this.
348 # FIXME: This really belongs into AC_PROG_CC and can be removed once
349 # Autoconf includes it.
350 rm -f a.out a.exe b.out
352 # Find the native compiler
355 ACX_PROG_GNAT([-I"$srcdir"/ada])
357 # Do configure tests with the C++ compiler, since that's what we build with.
360 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
361 # optimizations to be activated explicitly by the toplevel.
364 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
365 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
370 # Determine PICFLAG for target gnatlib.
371 GCC_PICFLAG_FOR_TARGET
372 AC_SUBST(PICFLAG_FOR_TARGET)
374 # -------------------------
375 # Check C compiler features
376 # -------------------------
378 AC_USE_SYSTEM_EXTENSIONS
384 # sizeof(char) is 1 by definition.
385 AC_CHECK_SIZEOF(void *)
386 AC_CHECK_SIZEOF(short)
388 AC_CHECK_SIZEOF(long)
389 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
391 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
392 AC_MSG_ERROR([uint64_t or int64_t not found])
395 # check what underlying integer type int64_t uses
396 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
397 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
401 template <typename T> struct X { };
403 struct X<long> { typedef long t; };
404 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
405 if test "$ac_cv_int64_t_type" = "long"; then
406 AC_DEFINE(INT64_T_IS_LONG, 1,
407 [Define if int64_t uses long as underlying type.])
409 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
413 template <typename T> struct X { };
415 struct X<long long> { typedef long long t; };
416 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
419 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
420 # If the host compiler is affected by the bug, and we build with optimization
421 # enabled (which happens e.g. when cross-compiling), the pool allocator may
422 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
423 # Since there is no reliable feature check for the presence of this bug,
424 # we simply use a GCC version number check. (This should never trigger for
425 # stages 2 or 3 of a native bootstrap.)
427 if test "$GCC" = yes; then
428 saved_CXXFLAGS="$CXXFLAGS"
430 # The following test compilation will succeed if and only if $CXX accepts
431 # -fno-strict-aliasing *and* is older than GCC 4.3.
432 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
433 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
435 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
436 #error compiler not affected by placement new aliasing bug
439 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
440 [AC_MSG_RESULT([no])])
442 CXXFLAGS="$saved_CXXFLAGS"
444 AC_SUBST(aliasing_flags)
448 # ---------------------
449 # Warnings and checking
450 # ---------------------
452 # Check $CC warning features (if it's GCC).
453 # We want to use -pedantic, but we don't want warnings about
457 # * C++11 narrowing conversions in { }
458 # So, we only use -pedantic if we can disable those warnings.
460 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
461 AC_ARG_ENABLE(build-format-warnings,
462 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
463 [],[enable_build_format_warnings=yes])
464 AS_IF([test $enable_build_format_warnings = no],
465 [wf_opt=-Wno-format],[wf_opt=])
466 ACX_PROG_CXX_WARNING_OPTS(
467 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
468 ACX_PROG_CC_WARNING_OPTS(
469 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
471 ACX_PROG_CXX_WARNING_OPTS(
472 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
473 ACX_PROG_CXX_WARNING_OPTS(
474 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
475 ACX_PROG_CC_WARNING_OPTS(
476 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
477 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
478 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
479 [-Wno-overlength-strings])), [strict_warn])
480 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
482 # The above macros do nothing if the compiler is not GCC. However, the
483 # Makefile has more goo to add other flags, so these variables are used
484 # to enable warnings only for GCC.
487 if test "x$GCC" = "xyes"; then
488 warn_cflags='$(GCC_WARN_CFLAGS)'
489 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
491 AC_SUBST(warn_cflags)
492 AC_SUBST(warn_cxxflags)
494 # Disable exceptions and RTTI if building with g++
495 ACX_PROG_CC_WARNING_OPTS(
496 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
499 # Enable expensive internal checks
501 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
505 AC_ARG_ENABLE(checking,
506 [AS_HELP_STRING([[--enable-checking[=LIST]]],
507 [enable expensive run-time checks. With LIST,
508 enable only specific categories of checks.
509 Categories are: yes,no,all,none,release.
510 Flags are: assert,df,fold,gc,gcac,gimple,misc,
511 rtlflag,rtl,runtime,tree,valgrind,types])],
512 [ac_checking_flags="${enableval}"],[
513 # Determine the default checks.
514 if test x$is_release = x ; then
515 ac_checking_flags=yes
517 ac_checking_flags=release
519 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
520 for check in release $ac_checking_flags
523 # these set all the flags to specific states
524 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
525 ac_fold_checking= ; ac_gc_checking=1 ;
526 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
527 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
528 ac_tree_checking=1 ; ac_valgrind_checking= ;
529 ac_types_checking=1 ;;
530 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
531 ac_fold_checking= ; ac_gc_checking= ;
532 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
533 ac_rtlflag_checking= ; ac_runtime_checking= ;
534 ac_tree_checking= ; ac_valgrind_checking= ;
535 ac_types_checking= ;;
536 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
537 ac_fold_checking=1 ; ac_gc_checking=1 ;
538 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
539 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
540 ac_tree_checking=1 ; ac_valgrind_checking= ;
541 ac_types_checking=1 ;;
542 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
543 ac_fold_checking= ; ac_gc_checking= ;
544 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
545 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
546 ac_tree_checking= ; ac_valgrind_checking= ;
547 ac_types_checking= ;;
548 # these enable particular checks
549 assert) ac_assert_checking=1 ;;
550 df) ac_df_checking=1 ;;
551 fold) ac_fold_checking=1 ;;
552 gc) ac_gc_checking=1 ;;
553 gcac) ac_gc_always_collect=1 ;;
554 gimple) ac_gimple_checking=1 ;;
555 misc) ac_checking=1 ;;
556 rtl) ac_rtl_checking=1 ;;
557 rtlflag) ac_rtlflag_checking=1 ;;
558 runtime) ac_runtime_checking=1 ;;
559 tree) ac_tree_checking=1 ;;
560 types) ac_types_checking=1 ;;
561 valgrind) ac_valgrind_checking=1 ;;
562 *) AC_MSG_ERROR(unknown check category $check) ;;
568 if test x$ac_checking != x ; then
569 AC_DEFINE(ENABLE_CHECKING, 1,
570 [Define if you want more run-time sanity checks. This one gets a grab
571 bag of miscellaneous but relatively cheap checks.])
572 nocommon_flag=-fno-common
574 AC_SUBST(nocommon_flag)
575 if test x$ac_df_checking != x ; then
576 AC_DEFINE(ENABLE_DF_CHECKING, 1,
577 [Define if you want more run-time sanity checks for dataflow.])
579 if test x$ac_assert_checking != x ; then
580 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
581 [Define if you want assertions enabled. This is a cheap check.])
583 if test x$ac_gimple_checking != x ; then
584 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
585 [Define if you want operations on GIMPLE (the basic data structure of
586 the high-level optimizers) to be checked for dynamic type safety at
587 runtime. This is moderately expensive.])
589 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
590 if test x$ac_runtime_checking != x ; then
591 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
592 [Define if you want runtime assertions enabled. This is a cheap check.])
594 if test x$ac_tree_checking != x ; then
595 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
596 [Define if you want all operations on trees (the basic data
597 structure of the front ends) to be checked for dynamic type safety
598 at runtime. This is moderately expensive.
602 if test x$ac_types_checking != x ; then
603 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
604 [Define if you want all gimple types to be verified after gimplifiation.
608 AC_SUBST(TREECHECKING)
609 if test x$ac_rtl_checking != x ; then
610 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
611 [Define if you want all operations on RTL (the basic data structure
612 of the optimizer and back end) to be checked for dynamic type safety
613 at runtime. This is quite expensive.])
615 if test x$ac_rtlflag_checking != x ; then
616 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
617 [Define if you want RTL flag accesses to be checked against the RTL
618 codes that are supported for each access macro. This is relatively
621 if test x$ac_gc_checking != x ; then
622 AC_DEFINE(ENABLE_GC_CHECKING, 1,
623 [Define if you want the garbage collector to do object poisoning and
624 other memory allocation checks. This is quite expensive.])
626 if test x$ac_gc_always_collect != x ; then
627 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
628 [Define if you want the garbage collector to operate in maximally
629 paranoid mode, validating the entire heap and collecting garbage at
630 every opportunity. This is extremely expensive.])
632 if test x$ac_fold_checking != x ; then
633 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
634 [Define if you want fold checked that it never destructs its argument.
635 This is quite expensive.])
637 valgrind_path_defines=
640 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
641 dnl # an if statement. This was the source of very frustrating bugs
642 dnl # in converting to autoconf 2.5x!
643 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
645 # It is certainly possible that there's valgrind but no valgrind.h.
646 # GCC relies on making annotations so we must have both.
647 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
648 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
649 [[#include <valgrind/memcheck.h>
650 #ifndef VALGRIND_DISCARD
651 #error VALGRIND_DISCARD not defined
653 [gcc_cv_header_valgrind_memcheck_h=yes],
654 [gcc_cv_header_valgrind_memcheck_h=no])
655 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
656 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
657 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
658 [[#include <memcheck.h>
659 #ifndef VALGRIND_DISCARD
660 #error VALGRIND_DISCARD not defined
662 [gcc_cv_header_memcheck_h=yes],
663 [gcc_cv_header_memcheck_h=no])
664 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
665 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
666 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
667 [Define if valgrind's valgrind/memcheck.h header is installed.])
669 if test $gcc_cv_header_memcheck_h = yes; then
670 AC_DEFINE(HAVE_MEMCHECK_H, 1,
671 [Define if valgrind's memcheck.h header is installed.])
674 if test x$ac_valgrind_checking != x ; then
675 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
676 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
677 if test "x$valgrind_path" = "x" \
678 || (test $have_valgrind_h = no \
679 && test $gcc_cv_header_memcheck_h = no \
680 && test $gcc_cv_header_valgrind_memcheck_h = no); then
681 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
683 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
684 valgrind_command="$valgrind_path -q"
685 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
686 [Define if you want to run subprograms and generated programs
687 through valgrind (a memory checker). This is extremely expensive.])
689 AC_SUBST(valgrind_path_defines)
690 AC_SUBST(valgrind_command)
692 # Enable code coverage collection
693 AC_ARG_ENABLE(coverage,
694 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
695 [enable compiler's code coverage collection.
696 Use to measure compiler performance and locate
697 unused parts of the compiler. With LEVEL, specify
698 optimization. Values are opt, noopt,
700 [case "${enableval}" in
702 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
705 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
708 # a.k.a. --disable-coverage
712 AC_MSG_ERROR(unknown coverage setting $enableval)
716 AC_SUBST(coverage_flags)
718 AC_ARG_ENABLE(gather-detailed-mem-stats,
719 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
720 [enable detailed memory allocation stats gathering])], [],
721 [enable_gather_detailed_mem_stats=no])
722 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
723 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
724 [Define to enable detailed memory allocation stats gathering.])
726 AC_ARG_ENABLE(valgrind-annotations,
727 [AS_HELP_STRING([--enable-valgrind-annotations],
728 [enable valgrind runtime interaction])], [],
729 [enable_valgrind_annotations=no])
730 if test x$enable_valgrind_annotations != xno \
731 || test x$ac_valgrind_checking != x; then
732 if (test $have_valgrind_h = no \
733 && test $gcc_cv_header_memcheck_h = no \
734 && test $gcc_cv_header_valgrind_memcheck_h = no); then
735 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
737 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
738 [Define to get calls to the valgrind runtime enabled.])
741 # -------------------------------
742 # Miscenalleous configure options
743 # -------------------------------
747 [AS_HELP_STRING([--with-stabs],
748 [arrange to use stabs instead of host debug format])],
752 # Determine whether or not multilibs are enabled.
753 AC_ARG_ENABLE(multilib,
754 [AS_HELP_STRING([--enable-multilib],
755 [enable library support for multiple ABIs])],
756 [], [enable_multilib=yes])
757 AC_SUBST(enable_multilib)
759 # Determine whether or not multiarch is enabled.
760 AC_ARG_ENABLE(multiarch,
761 [AS_HELP_STRING([--enable-multiarch],
762 [enable support for multiarch paths])],
763 [case "${enableval}" in
764 yes|no|auto) enable_multiarch=$enableval;;
765 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
766 esac], [enable_multiarch=auto])
767 if test x${enable_multiarch} = xauto; then
768 if test x${with_native_system_header_dir} != x; then
769 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
772 if test x$host != x$target && test "x$with_sysroot" = x; then
773 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
777 AC_MSG_CHECKING(for multiarch configuration)
778 AC_SUBST(enable_multiarch)
779 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
781 # needed for setting the multiarch name for soft-float/hard-float ABIs
785 # Enable __cxa_atexit for C++.
786 AC_ARG_ENABLE(__cxa_atexit,
787 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
790 # Enable C extension for decimal float if target supports it.
791 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
793 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
794 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
795 [Define to 1 to enable decimal float extension to C.])
797 # Use default_decimal_float for dependency.
798 enable_decimal_float=$default_decimal_float
800 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
801 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
802 [Define to 1 to specify that we are using the BID decimal floating
803 point format instead of DPD])
805 # Enable C extension for fixed-point arithmetic.
806 AC_ARG_ENABLE(fixed-point,
807 [AS_HELP_STRING([--enable-fixed-point],
808 [enable fixed-point arithmetic extension to C])],
813 enable_fixed_point=yes
817 enable_fixed_point=yes
820 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
821 enable_fixed_point=no
825 AC_SUBST(enable_fixed_point)
827 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
828 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
829 [Define to 1 to enable fixed-point arithmetic extension to C.])
832 # Pass with no value to take the default
833 # Pass with a value to specify a thread package
834 AC_ARG_ENABLE(threads,
835 [AS_HELP_STRING([[--enable-threads[=LIB]]],
836 [enable thread usage for target GCC,
837 using LIB thread package])],,
841 [AS_HELP_STRING([--enable-tls],
842 [enable or disable generation of tls code
843 overriding the assembler check for tls support])],
847 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
848 Valid choices are 'yes' and 'no'.]) ;;
852 AC_ARG_ENABLE(objc-gc,
853 [AS_HELP_STRING([--enable-objc-gc],
854 [enable the use of Boehm's garbage collector with
855 the GNU Objective-C runtime])],
856 if test x$enable_objc_gc = xno; then
864 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
865 dwarf2="$with_dwarf2",
868 AC_ARG_ENABLE(shared,
869 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
871 case $enable_shared in
875 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
876 for pkg in $enableval; do
877 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
884 ], [enable_shared=yes])
885 AC_SUBST(enable_shared)
888 [AS_HELP_STRING([--with-specs=SPECS],
889 [add SPECS to driver command-line processing])],
890 [CONFIGURE_SPECS=$withval],
893 AC_SUBST(CONFIGURE_SPECS)
895 ACX_PKGVERSION([GCC])
896 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
898 # Sanity check enable_languages in case someone does not run the toplevel
899 # configure # script.
900 AC_ARG_ENABLE(languages,
901 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
902 [case ,${enable_languages}, in
904 # go safe -- we cannot be much sure without the toplevel
906 # analysis of which target libs are present and usable
910 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
915 enable_languages=c,${enable_languages}
918 [enable_languages=c])
920 if test x"$enable_as_accelerator_for" != x; then
921 AC_DEFINE(ACCEL_COMPILER, 1,
922 [Define if this compiler should be built as the offload target compiler.])
923 enable_as_accelerator=yes
926 # In this case we expect offload compiler to be built as native, so we
927 # need to rename the driver to avoid clashes with host's drivers.
928 program_transform_name="s&^&${target}-&" ;;
930 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
931 program_transform_name=`echo $program_transform_name | sed $sedscript`
932 accel_dir_suffix=/accel/${target_noncanonical}
933 real_target_noncanonical=${enable_as_accelerator_for}
935 AC_SUBST(enable_as_accelerator)
936 AC_SUBST(real_target_noncanonical)
937 AC_SUBST(accel_dir_suffix)
939 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
940 tgt=`echo $tgt | sed 's/=.*//'`
941 if test x"$offload_targets" = x; then
944 offload_targets="$offload_targets:$tgt"
947 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
948 [Define to hold the list of target names suitable for offloading.])
949 if test x"$offload_targets" != x; then
950 AC_DEFINE(ENABLE_OFFLOADING, 1,
951 [Define this to enable support for offloading.])
954 AC_ARG_WITH(multilib-list,
955 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
957 with_multilib_list=default)
959 # -------------------------
960 # Checks for other programs
961 # -------------------------
965 # Find some useful tools
967 # We need awk to create options.c and options.h.
968 # Bail out if it's missing.
970 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
977 AC_SUBST(ranlib_flags)
981 # See if cmp has --ignore-initial.
982 gcc_AC_PROG_CMP_IGNORE_INITIAL
984 # See if we have the mktemp command.
985 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
987 # See if makeinfo has been installed and is modern enough
988 # that we can use it.
989 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
990 [GNU texinfo.* \([0-9][0-9.]*\)],
991 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
992 if test $gcc_cv_prog_makeinfo_modern = no; then
994 *** Makeinfo is missing or too old.
995 *** Info documentation will not be built.])
1000 AC_SUBST(BUILD_INFO)
1002 # Is pod2man recent enough to regenerate manpages?
1003 AC_MSG_CHECKING([for recent Pod::Man])
1004 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1006 GENERATED_MANPAGES=generated-manpages
1011 AC_SUBST(GENERATED_MANPAGES)
1013 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1016 dnl Don't use AC_PROG_LEX; we insist on flex.
1017 dnl LEXLIB is not useful in gcc.
1018 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1021 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1023 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1024 # check for build == host before using them.
1027 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1028 && test -d ../binutils ; then
1029 NM='${objdir}/../binutils/nm-new'
1031 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1035 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1036 && test -d ../binutils ; then
1037 AR='${objdir}/../binutils/ar'
1039 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1042 # The jit documentation looks better if built with sphinx, but can be
1043 # built with texinfo if sphinx is not available.
1044 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1045 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1047 # --------------------
1048 # Checks for C headers
1049 # --------------------
1051 # Need to reject headers which give warnings, so that the -Werror bootstrap
1052 # works later. *sigh* This needs to come before all header checks.
1059 AC_HEADER_TIOCGWINSZ
1060 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1061 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1062 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1063 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1065 # Check for thread headers.
1066 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1067 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1069 # These tests can't be done till we know if we have limits.h.
1073 # ----------------------
1074 # Checks for C++ headers
1075 # ----------------------
1077 dnl Autoconf will give an error in the configure script if there is no
1078 dnl C++ preprocessor. Hack to prevent that.
1079 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1081 m4_popdef([AC_MSG_ERROR])[]dnl
1083 AC_CHECK_HEADERS(unordered_map)
1084 AC_CHECK_HEADERS(tr1/unordered_map)
1085 AC_CHECK_HEADERS(ext/hash_map)
1088 # Dependency checking.
1092 AC_CONFIG_COMMANDS([gccdepdir],[
1093 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1094 for lang in $subdirs c-family common
1096 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1097 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1099 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1106 # These libraries may be used by collect2.
1107 # We may need a special search path to get them linked.
1108 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1110 for libs in '' -lld -lmld \
1111 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1112 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1115 AC_TRY_LINK_FUNC(ldopen,
1116 [gcc_cv_collect2_libs="$libs"; break])
1119 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1120 case $gcc_cv_collect2_libs in
1122 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1124 AC_SUBST(COLLECT2_LIBS)
1126 # When building Ada code on Alpha, we need exc_resume which is usually in
1127 # -lexc. So test for it.
1130 AC_SEARCH_LIBS(exc_resume, exc)
1133 AC_SUBST(GNAT_LIBEXC)
1135 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1138 AC_SEARCH_LIBS(kstat_open, kstat)
1139 EXTRA_GCC_LIBS="$LIBS"
1141 AC_SUBST(EXTRA_GCC_LIBS)
1143 # Some systems put ldexp and frexp in libm instead of libc; assume
1144 # they're both in the same place. jcf-dump needs them.
1147 AC_SEARCH_LIBS(ldexp, m)
1152 # Use <inttypes.h> only if it exists,
1153 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1155 AC_MSG_CHECKING(for inttypes.h)
1156 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1157 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1158 [[#define __STDC_FORMAT_MACROS
1159 #include <sys/types.h>
1160 #include <inttypes.h>]],
1165 [gcc_cv_header_inttypes_h=yes],
1166 [gcc_cv_header_inttypes_h=no])])
1167 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1168 if test $gcc_cv_header_inttypes_h = yes; then
1169 AC_DEFINE(HAVE_INTTYPES_H, 1,
1170 [Define if you have a working <inttypes.h> header file.])
1173 dnl Disabled until we have a complete test for buggy enum bitfields.
1174 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1176 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1177 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1178 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1179 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1180 putchar_unlocked putc_unlocked)
1181 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1182 popen sysconf strsignal getrusage nl_langinfo \
1183 gettimeofday mbstowcs wcswidth mmap setlocale \
1184 gcc_UNLOCKED_FUNCS madvise)
1186 if test x$ac_cv_func_mbstowcs = xyes; then
1187 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1188 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1194 [gcc_cv_func_mbstowcs_works=yes],
1195 [gcc_cv_func_mbstowcs_works=no],
1196 [gcc_cv_func_mbstowcs_works=yes])])
1197 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1198 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1199 [Define this macro if mbstowcs does not crash when its
1200 first argument is NULL.])
1204 AC_CHECK_TYPE(ssize_t, int)
1205 AC_CHECK_TYPE(caddr_t, char *)
1207 GCC_AC_FUNC_MMAP_BLACKLIST
1211 # Under VMS, vfork works very differently than on Unix. The standard test
1212 # won't work, and it isn't easily adaptable. It makes more sense to
1214 ac_cv_func_vfork_works=yes
1221 # Until we have in-tree GNU iconv:
1223 AC_SUBST(LIBICONV_DEP)
1229 # We will need to find libiberty.h and ansidecl.h
1230 saved_CFLAGS="$CFLAGS"
1231 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1232 saved_CXXFLAGS="$CXXFLAGS"
1233 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1235 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1236 # normal autoconf function for these. But force definition of
1237 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1238 # basename handling in libiberty.h.
1239 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1240 #undef HAVE_DECL_BASENAME
1241 #define HAVE_DECL_BASENAME 1
1242 #include "ansidecl.h"
1243 #include "system.h"])
1245 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1246 madvise stpcpy strnlen strsignal strverscmp \
1247 strtol strtoul strtoll strtoull \
1248 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1249 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1250 #include "ansidecl.h"
1251 #include "system.h"])
1253 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1254 #include "ansidecl.h"
1256 #ifdef HAVE_SYS_RESOURCE_H
1257 #include <sys/resource.h>
1261 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1262 #include "ansidecl.h"
1264 #ifdef HAVE_SYS_RESOURCE_H
1265 #include <sys/resource.h>
1267 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1268 [Define to `long' if <sys/resource.h> doesn't define.])])
1270 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1271 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1272 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1273 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1274 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1275 #include "ansidecl.h"
1284 gcc_AC_CHECK_DECLS(times, , ,[
1285 #include "ansidecl.h"
1287 #ifdef HAVE_SYS_TIMES_H
1288 #include <sys/times.h>
1292 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1293 #include "ansidecl.h"
1298 # More time-related stuff.
1299 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1300 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1301 #include "ansidecl.h"
1303 #ifdef HAVE_SYS_TIMES_H
1304 #include <sys/times.h>
1306 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1307 if test $ac_cv_struct_tms = yes; then
1308 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1309 [Define if <sys/times.h> defines struct tms.])
1312 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1313 # revisit after autoconf 2.50.
1314 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1315 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1316 #include "ansidecl.h"
1318 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1319 if test $gcc_cv_type_clock_t = yes; then
1320 AC_DEFINE(HAVE_CLOCK_T, 1,
1321 [Define if <time.h> defines clock_t.])
1324 # Check if F_SETLKW is supported by fcntl.
1325 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1326 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1327 #include <fcntl.h>]], [[
1333 return fcntl (1, F_SETLKW, &fl);]])],
1334 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1335 if test $ac_cv_f_setlkw = yes; then
1336 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1337 [Define if F_SETLKW supported by fcntl.])
1340 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1341 CFLAGS="$saved_CFLAGS"
1342 CXXFLAGS="$saved_CXXFLAGS"
1344 # mkdir takes a single argument on some systems.
1345 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1353 # With Setjmp/Longjmp based exception handling.
1354 AC_ARG_ENABLE(sjlj-exceptions,
1355 [AS_HELP_STRING([--enable-sjlj-exceptions],
1356 [arrange to use setjmp/longjmp exception handling])],
1359 if test $enableval != yes; then
1360 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1365 force_sjlj_exceptions=yes],
1368 force_sjlj_exceptions=yes
1372 force_sjlj_exceptions=yes
1376 force_sjlj_exceptions=no
1379 if test $force_sjlj_exceptions = yes; then
1380 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1381 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1382 [Define 0/1 to force the choice for exception handling model.])
1385 # --------------------------------------------------------
1386 # Build, host, and target specific configuration fragments
1387 # --------------------------------------------------------
1389 # Collect build-machine-specific information.
1390 . ${srcdir}/config.build
1392 # Collect host-machine-specific information.
1393 . ${srcdir}/config.host
1397 # Collect target-machine-specific information.
1398 . ${srcdir}/config.gcc
1400 extra_objs="${host_extra_objs} ${extra_objs}"
1401 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1403 # Default the target-machine variables that were not explicitly set.
1404 if test x"$tm_file" = x
1405 then tm_file=$cpu_type/$cpu_type.h; fi
1407 if test x"$extra_headers" = x
1408 then extra_headers=; fi
1410 if test x$md_file = x
1411 then md_file=$cpu_type/$cpu_type.md; fi
1413 if test x$out_file = x
1414 then out_file=$cpu_type/$cpu_type.c; fi
1416 if test x"$tmake_file" = x
1417 then tmake_file=$cpu_type/t-$cpu_type
1420 # Support --enable-initfini-array.
1421 if test x$enable_initfini_array != xno; then
1422 tm_file="${tm_file} initfini-array.h"
1425 if test x"$dwarf2" = xyes
1426 then tm_file="$tm_file tm-dwarf2.h"
1429 # Say what files are being used for the output code and MD file.
1430 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1431 echo "Using \`$srcdir/config/$md_file' as machine description file."
1433 # If any of the xm_file variables contain nonexistent files, warn
1434 # about them and drop them.
1437 for x in $build_xm_file; do
1438 if test -f $srcdir/config/$x
1440 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1446 for x in $host_xm_file; do
1447 if test -f $srcdir/config/$x
1449 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1455 for x in $xm_file; do
1456 if test -f $srcdir/config/$x
1458 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1464 for f in $tm_file; do
1467 if test $count = ax; then
1468 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1470 echo "Using the following target machine macro files:"
1471 for f in $tm_file; do
1472 echo " $srcdir/config/$f"
1476 if test x$use_long_long_for_widest_fast_int = xyes; then
1477 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1478 [Define to 1 if the 'long long' type is wider than 'long' but still
1479 efficiently supported by the host hardware.])
1482 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1483 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1485 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1486 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1489 for f in $host_xm_file; do
1492 if test $count = a; then
1494 elif test $count = ax; then
1495 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1497 echo "Using the following host machine macro files:"
1498 for f in $host_xm_file; do
1499 echo " $srcdir/config/$f"
1502 echo "Using ${out_host_hook_obj} for host machine hooks."
1504 if test "$host_xm_file" != "$build_xm_file"; then
1506 for f in $build_xm_file; do
1509 if test $count = a; then
1511 elif test $count = ax; then
1512 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1514 echo "Using the following build machine macro files:"
1515 for f in $build_xm_file; do
1516 echo " $srcdir/config/$f"
1521 if test -n "$configured_native_system_header_dir"; then
1522 native_system_header_dir=$configured_native_system_header_dir
1524 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1525 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1529 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1530 gcc_cv_mcontext_underscores,
1532 #include <sys/cdefs.h>
1533 #include <sys/signal.h>
1534 #include <ucontext.h>
1535 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1537 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1538 if test $gcc_cv_mcontext_underscores = yes; then
1539 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1540 [mcontext_t fields start with __])
1549 # Check if a valid thread package
1550 case ${enable_threads} in
1553 target_thread_file='single'
1557 target_thread_file='single'
1559 aix | dce | lynx | mipssde | posix | rtems | \
1560 single | tpf | vxworks | win32)
1561 target_thread_file=${enable_threads}
1564 echo "${enable_threads} is an unknown thread package" 1>&2
1569 if test x${thread_file} = x; then
1570 # No thread file set by target-specific clauses in config.gcc,
1571 # so use file chosen by default logic above
1572 thread_file=${target_thread_file}
1580 if test x$enable___cxa_atexit = xyes || \
1581 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1582 if test x$host = x$target; then
1584 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1585 # keyed to flag_use_cxa_atexit
1593 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1594 [echo "__cxa_atexit can't be enabled on this target"])
1598 # We can't check for __cxa_atexit when building a cross, so assume
1602 if test x$use_cxa_atexit = xyes; then
1603 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1604 [Define if you want to use __cxa_atexit, rather than atexit, to
1605 register C++ destructors for local statics and global objects.
1606 This is essential for fully standards-compliant handling of
1607 destructors, but requires __cxa_atexit in libc.])
1611 # Look for a file containing extra machine modes.
1612 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1613 extra_modes_file='$(srcdir)'/config/${extra_modes}
1614 AC_SUBST(extra_modes_file)
1615 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1616 [Define to the name of a file containing a list of extra machine modes
1617 for this architecture.])
1620 # Convert extra_options into a form suitable for Makefile use.
1623 for f in $extra_options; do
1624 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1625 all_opt_files="$all_opt_files $srcdir/config/$f"
1627 AC_SUBST(extra_opt_files)
1629 # auto-host.h is the file containing items generated by autoconf and is
1630 # the first file included by config.h.
1631 # If host=build, it is correct to have bconfig include auto-host.h
1632 # as well. If host!=build, we are in error and need to do more
1633 # work to find out the build config parameters.
1634 if test x$host = x$build
1636 build_auto=auto-host.h
1638 # We create a subdir, then run autoconf in the subdir.
1639 # To prevent recursion we set host and build for the new
1640 # invocation of configure to the build for this invocation
1647 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1648 *) realsrcdir=../${srcdir};;
1650 # Clearing GMPINC is necessary to prevent host headers being
1651 # used by the build compiler. Defining GENERATOR_FILE stops
1652 # system.h from including gmp.h.
1653 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1654 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1655 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1656 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1657 ${realsrcdir}/configure \
1658 --enable-languages=${enable_languages-all} \
1659 --target=$target_alias --host=$build_alias --build=$build_alias
1661 # We just finished tests for the build machine, so rename
1662 # the file auto-build.h in the gcc directory.
1663 mv auto-host.h ../auto-build.h
1666 build_auto=auto-build.h
1668 AC_SUBST(build_subdir)
1670 tm_file="${tm_file} defaults.h"
1671 tm_p_file="${tm_p_file} tm-preds.h"
1672 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1673 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1674 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1675 # put this back in temporarily.
1676 xm_file="auto-host.h ansidecl.h ${xm_file}"
1683 # Compile in configure arguments.
1684 if test -f configargs.h ; then
1685 # Being re-configured.
1686 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1687 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1689 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1692 # Double all backslashes and backslash all quotes to turn
1693 # gcc_config_arguments into a C string.
1694 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1695 $gcc_config_arguments
1697 gcc_config_arguments_str=`cat conftest.out`
1700 cat > configargs.h <<EOF
1701 /* Generated automatically. */
1702 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1703 static const char thread_model[] = "$thread_file";
1705 static const struct {
1706 const char *name, *value;
1707 } configure_default_options[] = $configure_default_options;
1712 gcc_BASEVER=`cat $srcdir/BASE-VER`
1713 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1714 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1715 if test -f $srcdir/REVISION ; then
1716 gcc_REVISION=`cat $srcdir/REVISION`
1720 cat > plugin-version.h <<EOF
1721 #include "configargs.h"
1723 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1724 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1725 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1726 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1728 static char basever[] = "$gcc_BASEVER";
1729 static char datestamp[] = "$gcc_DATESTAMP";
1730 static char devphase[] = "$gcc_DEVPHASE";
1731 static char revision[] = "$gcc_REVISION";
1733 /* FIXME plugins: We should make the version information more precise.
1734 One way to do is to add a checksum. */
1736 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1738 configuration_arguments};
1742 # Internationalization
1743 ZW_GNU_GETTEXT_SISTER_DIR
1745 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1746 # -liconv on the link line twice.
1747 case "$LIBINTL" in *$LIBICONV*)
1751 AC_ARG_ENABLE(secureplt,
1752 [AS_HELP_STRING([--enable-secureplt],
1753 [enable -msecure-plt by default for PowerPC])],
1756 AC_ARG_ENABLE(leading-mingw64-underscores,
1757 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1758 [enable leading underscores on 64 bit mingw targets]),
1760 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1761 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1762 [Define if we should use leading underscore on 64 bit mingw targets])])
1765 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1768 AC_ARG_ENABLE(frame-pointer,
1769 [AS_HELP_STRING([--enable-frame-pointer],
1770 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1773 linux* | darwin[[8912]]*)
1774 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1776 enable_frame_pointer=no
1779 enable_frame_pointer=yes
1784 # Windows32 Registry support for specifying GCC installation paths.
1785 AC_ARG_ENABLE(win32-registry,
1786 [AS_HELP_STRING([--disable-win32-registry],
1787 [disable lookup of installation paths in the
1788 Registry on Windows hosts])
1789 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1790 AS_HELP_STRING([--enable-win32-registry=KEY],
1791 [use KEY instead of GCC version as the last portion
1792 of the registry key])],,)
1795 win32 | pe | cygwin* | mingw32* | uwin*)
1796 if test "x$enable_win32_registry" != xno; then
1797 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1800 if test "x$enable_win32_registry" != xno; then
1801 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1802 [Define to 1 if installation paths should be looked up in the Windows
1803 Registry. Ignored on non-Windows hosts.])
1805 if test "x$enable_win32_registry" != xyes \
1806 && test "x$enable_win32_registry" != x; then
1807 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1808 [Define to be the last component of the Windows registry key under which
1809 to look for installation paths. The full key used will be
1810 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1811 The default is the GCC version number.])
1817 # Get an absolute path to the GCC top-level source directory
1818 holddir=`${PWDCMD-pwd}`
1820 topdir=`${PWDCMD-pwd}`
1823 # Conditionalize the makefile for this host machine.
1825 for f in ${host_xmake_file}
1827 if test -f ${srcdir}/config/$f
1829 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1833 # Conditionalize the makefile for this target machine.
1835 for f in ${tmake_file}
1837 if test -f ${srcdir}/config/$f
1839 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1842 tmake_file="${tmake_file_}"
1844 out_object_file=`basename $out_file .c`.o
1845 common_out_object_file=`basename $common_out_file .c`.o
1847 tm_file_list="options.h"
1848 tm_include_list="options.h insn-constants.h"
1849 for f in $tm_file; do
1852 f=`echo $f | sed 's/^..//'`
1853 tm_file_list="${tm_file_list} $f"
1854 tm_include_list="${tm_include_list} $f"
1857 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1858 tm_include_list="${tm_include_list} $f"
1861 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1862 tm_include_list="${tm_include_list} config/$f"
1869 for f in $tm_p_file; do
1872 tm_p_file_list="${tm_p_file_list} $f"
1873 tm_p_include_list="${tm_p_include_list} $f"
1876 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1877 tm_p_include_list="${tm_p_include_list} config/$f"
1883 for f in $xm_file; do
1886 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1887 xm_include_list="${xm_include_list} $f"
1890 xm_file_list="${xm_file_list} $f"
1891 xm_include_list="${xm_include_list} $f"
1894 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1895 xm_include_list="${xm_include_list} config/$f"
1901 host_xm_include_list=
1902 for f in $host_xm_file; do
1905 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1906 host_xm_include_list="${host_xm_include_list} $f"
1909 host_xm_file_list="${host_xm_file_list} $f"
1910 host_xm_include_list="${host_xm_include_list} $f"
1913 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1914 host_xm_include_list="${host_xm_include_list} config/$f"
1920 for f in $build_xm_file; do
1923 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1924 build_xm_include_list="${build_xm_include_list} $f"
1926 auto-build.h | auto-host.h )
1927 build_xm_file_list="${build_xm_file_list} $f"
1928 build_xm_include_list="${build_xm_include_list} $f"
1931 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1932 build_xm_include_list="${build_xm_include_list} config/$f"
1937 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1938 # cross-compiler which does not use the native headers and libraries.
1939 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1940 CROSS= AC_SUBST(CROSS)
1941 ALL=all.internal AC_SUBST(ALL)
1942 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1944 if test "x$with_build_sysroot" != x; then
1945 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1947 # This value is used, even on a native system, because
1948 # CROSS_SYSTEM_HEADER_DIR is just
1949 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1950 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1953 if test x$host != x$target
1955 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1957 SYSTEM_HEADER_DIR=$build_system_header_dir
1958 case "$host","$target" in
1959 # Darwin crosses can use the host system's libraries and headers,
1960 # because of the fat library support. Of course, it must be the
1961 # same version of Darwin on both sides. Allow the user to
1962 # just say --target=foo-darwin without a version number to mean
1963 # "the version on this system".
1964 *-*-darwin*,*-*-darwin*)
1965 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1966 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1967 if test $hostos = $targetos -o $targetos = darwin ; then
1969 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1974 i?86-*-*,x86_64-*-* \
1975 | powerpc*-*-*,powerpc64*-*-*)
1976 CROSS="$CROSS -DNATIVE_CROSS" ;;
1981 if test "x$with_headers" = x; then
1988 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1989 SYSTEM_HEADER_DIR=$build_system_header_dir
1992 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
1993 if test "x$with_headers" != x; then
1994 target_header_dir=$with_headers
1995 elif test "x$with_sysroot" = x; then
1996 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
1997 elif test "x$with_build_sysroot" != "x"; then
1998 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
1999 elif test "x$with_sysroot" = xyes; then
2000 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2002 target_header_dir="${with_sysroot}${native_system_header_dir}"
2005 target_header_dir=${native_system_header_dir}
2008 # If this is a cross-compiler that does not
2009 # have its own set of headers then define
2012 # If this is using newlib, without having the headers available now,
2013 # then define inhibit_libc in LIBGCC2_CFLAGS.
2014 # This prevents libgcc2 from containing any code which requires libc
2016 : ${inhibit_libc=false}
2017 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2018 test x$with_newlib = xyes ; } &&
2019 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2022 AC_SUBST(inhibit_libc)
2024 # When building gcc with a cross-compiler, we need to adjust things so
2025 # that the generator programs are still built with the native compiler.
2026 # Also, we cannot run fixincludes.
2028 # These are the normal (build=host) settings:
2029 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2030 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2031 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2032 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2033 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2034 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2036 # And these apply if build != host, or we are generating coverage data
2037 if test x$build != x$host || test "x$coverage_flags" != x
2039 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2040 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2041 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2044 # Expand extra_headers to include complete path.
2045 # This substitutes for lots of t-* files.
2047 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2048 for file in ${extra_headers} ; do
2049 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2052 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2053 if test x"$use_gcc_tgmath" = xyes
2054 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2057 # Define collect2 in Makefile.
2058 case $host_can_use_collect2 in
2060 *) collect2='collect2$(exeext)' ;;
2062 AC_SUBST([collect2])
2064 # Add a definition of USE_COLLECT2 if system wants one.
2065 case $use_collect2 in
2066 no) use_collect2= ;;
2069 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2070 xm_defines="${xm_defines} USE_COLLECT2"
2071 case $host_can_use_collect2 in
2073 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2079 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2080 [Define to the name of the LTO plugin DSO that must be
2081 passed to the linker's -plugin=LIB option.])
2083 # ---------------------------
2084 # Assembler & linker features
2085 # ---------------------------
2087 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2088 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2089 # However when ld-new is first executed from the build tree, libtool will
2090 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2091 # to the build tree. While doing this we need to use the previous-stage
2092 # linker, or we have an infinite loop. The presence of a shell script as
2093 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2094 # the gcc/collect-ld script. So we need to know how libtool works, or
2095 # exec-tool will fail.
2097 m4_defun([_LT_CONFIG_COMMANDS], [])
2100 AC_SUBST(enable_fast_install)
2102 # Identify the assembler which will work hand-in-glove with the newly
2103 # built GCC, so that we can examine its features. This is the assembler
2104 # which will be driven by the driver program.
2106 # If build != host, and we aren't building gas in-tree, we identify a
2107 # build->target assembler and hope that it will have the same features
2108 # as the host->target assembler we'll be using.
2109 gcc_cv_gas_major_version=
2110 gcc_cv_gas_minor_version=
2111 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2113 m4_pattern_allow([AS_FOR_TARGET])dnl
2114 AS_VAR_SET_IF(gcc_cv_as,, [
2115 if test -x "$DEFAULT_ASSEMBLER"; then
2116 gcc_cv_as="$DEFAULT_ASSEMBLER"
2117 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2118 && test -f ../gas/Makefile \
2119 && test x$build = x$host; then
2120 gcc_cv_as=../gas/as-new$build_exeext
2121 elif test -x as$build_exeext; then
2122 # Build using assembler in the current directory.
2123 gcc_cv_as=./as$build_exeext
2124 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2125 gcc_cv_as="$AS_FOR_TARGET"
2127 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2130 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2131 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2132 case "$ORIGINAL_AS_FOR_TARGET" in
2133 ./as | ./as$build_exeext) ;;
2134 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2137 AC_MSG_CHECKING(what assembler to use)
2138 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2139 # Single tree build which includes gas. We want to prefer it
2140 # over whatever linker top-level may have detected, since
2141 # we'll use what we're building after installation anyway.
2142 AC_MSG_RESULT(newly built gas)
2144 _gcc_COMPUTE_GAS_VERSION
2145 in_tree_gas_is_elf=no
2146 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2147 || (grep 'obj_format = multi' ../gas/Makefile \
2148 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2150 in_tree_gas_is_elf=yes
2153 AC_MSG_RESULT($gcc_cv_as)
2159 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2160 [case "${enableval}" in
2166 install_gold_as_default=no
2168 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2169 [case "${enableval}" in
2171 install_gold_as_default=yes
2174 if test x${default_ld} != x; then
2175 install_gold_as_default=yes
2181 AC_MSG_ERROR([invalid --enable-gold argument])
2185 # Identify the linker which will work hand-in-glove with the newly
2186 # built GCC, so that we can examine its features. This is the linker
2187 # which will be driven by the driver program.
2189 # If build != host, and we aren't building gas in-tree, we identify a
2190 # build->target linker and hope that it will have the same features
2191 # as the host->target linker we'll be using.
2192 gcc_cv_gld_major_version=
2193 gcc_cv_gld_minor_version=
2194 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2195 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2196 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2198 AS_VAR_SET_IF(gcc_cv_ld,, [
2199 if test -x "$DEFAULT_LINKER"; then
2200 gcc_cv_ld="$DEFAULT_LINKER"
2201 elif test $install_gold_as_default = yes \
2202 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2203 && test -f ../gold/Makefile \
2204 && test x$build = x$host; then
2205 gcc_cv_ld=../gold/ld-new$build_exeext
2206 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2207 && test -f ../ld/Makefile \
2208 && test x$build = x$host; then
2209 gcc_cv_ld=../ld/ld-new$build_exeext
2210 elif test -x collect-ld$build_exeext; then
2211 # Build using linker in the current directory.
2212 gcc_cv_ld=./collect-ld$build_exeext
2213 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2214 gcc_cv_ld="$LD_FOR_TARGET"
2216 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2219 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2220 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2221 # if the PLUGIN_LD is set ld-new, just have it as ld
2222 # as that is the installed named.
2223 if test x$PLUGIN_LD_SUFFIX = xld-new \
2224 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2227 AC_ARG_WITH(plugin-ld,
2228 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2229 [if test x"$withval" != x; then
2230 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2231 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2233 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2234 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2236 # Check to see if we are using gold instead of ld
2237 AC_MSG_CHECKING(whether we are using gold)
2239 if test x$gcc_cv_ld != x; then
2240 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2241 | grep "GNU gold" > /dev/null; then
2245 AC_MSG_RESULT($ld_is_gold)
2247 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2248 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2249 case "$ORIGINAL_LD_FOR_TARGET" in
2250 ./collect-ld | ./collect-ld$build_exeext) ;;
2251 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2254 AC_MSG_CHECKING(what linker to use)
2255 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2256 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2257 # Single tree build which includes ld. We want to prefer it
2258 # over whatever linker top-level may have detected, since
2259 # we'll use what we're building after installation anyway.
2260 AC_MSG_RESULT(newly built ld)
2262 in_tree_ld_is_elf=no
2263 if (grep 'EMUL = .*elf' ../ld/Makefile \
2264 || grep 'EMUL = .*linux' ../ld/Makefile \
2265 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2266 in_tree_ld_is_elf=yes
2267 elif test "$ld_is_gold" = yes; then
2268 in_tree_ld_is_elf=yes
2270 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
2273 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2274 if test x$gcc_cv_gld_version != x; then
2278 case $gcc_cv_gld_version in
2281 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2284 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2285 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2287 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2288 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2290 AC_MSG_RESULT($gcc_cv_ld)
2292 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2293 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2294 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2297 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2298 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2300 # Figure out what nm we will be using.
2301 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2302 AS_VAR_SET_IF(gcc_cv_nm,, [
2303 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2304 && test -f ../binutils/Makefile \
2305 && test x$build = x$host; then
2306 gcc_cv_nm=../binutils/nm-new$build_exeext
2307 elif test -x nm$build_exeext; then
2308 gcc_cv_nm=./nm$build_exeext
2309 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2310 gcc_cv_nm="$NM_FOR_TARGET"
2312 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2315 AC_MSG_CHECKING(what nm to use)
2316 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2317 # Single tree build which includes binutils.
2318 AC_MSG_RESULT(newly built nm)
2321 AC_MSG_RESULT($gcc_cv_nm)
2325 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2326 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2327 case "$ORIGINAL_NM_FOR_TARGET" in
2328 ./nm | ./nm$build_exeext) ;;
2329 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2333 # Figure out what objdump we will be using.
2334 AS_VAR_SET_IF(gcc_cv_objdump,, [
2335 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2336 && test -f ../binutils/Makefile \
2337 && test x$build = x$host; then
2338 # Single tree build which includes binutils.
2339 gcc_cv_objdump=../binutils/objdump$build_exeext
2340 elif test -x objdump$build_exeext; then
2341 gcc_cv_objdump=./objdump$build_exeext
2342 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2343 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2345 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2348 AC_MSG_CHECKING(what objdump to use)
2349 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2350 # Single tree build which includes binutils.
2351 AC_MSG_RESULT(newly built objdump)
2352 elif test x$gcc_cv_objdump = x; then
2353 AC_MSG_RESULT(not found)
2355 AC_MSG_RESULT($gcc_cv_objdump)
2358 # Figure out what readelf we will be using.
2359 AS_VAR_SET_IF(gcc_cv_readelf,, [
2360 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2361 && test -f ../binutils/Makefile \
2362 && test x$build = x$host; then
2363 # Single tree build which includes binutils.
2364 gcc_cv_readelf=../binutils/readelf$build_exeext
2365 elif test -x readelf$build_exeext; then
2366 gcc_cv_readelf=./readelf$build_exeext
2368 AC_PATH_PROG(gcc_cv_readelf, readelf)
2371 AC_MSG_CHECKING(what readelf to use)
2372 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2373 # Single tree build which includes binutils.
2374 AC_MSG_RESULT(newly built readelf)
2375 elif test x$gcc_cv_readelf = x; then
2376 AC_MSG_RESULT(not found)
2378 AC_MSG_RESULT($gcc_cv_readelf)
2381 # Figure out what assembler alignment features are present.
2382 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2386 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2387 [Define if your assembler supports .balign and .p2align.])])
2389 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2392 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2393 [Define if your assembler supports specifying the maximum number
2394 of bytes to skip when using the GAS .p2align command.])])
2396 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2399 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2400 [Define if your assembler supports .literal16.])])
2402 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2404 [conftest_label1: .word 0
2406 conftest_label2: .word 0
2408 [if test x$gcc_cv_nm != x; then
2409 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2410 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2411 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2413 else gcc_cv_as_subsection_m1=yes
2415 rm -f conftest.nm1 conftest.nm2
2417 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2418 [Define if your assembler supports .subsection and .subsection -1 starts
2419 emitting at the beginning of your section.])])
2421 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2424 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2426 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2428 [ .weakref foobar, barfnot],,
2429 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2431 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2434 .NSUBSPA $CODE$,COMDAT],,
2435 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2437 # .hidden needs to be supported in both the assembler and the linker,
2438 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2439 # This is irritatingly difficult to feature test for; we have to check the
2440 # date string after the version number. If we've got an in-tree
2441 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2443 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2444 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2450 # Darwin as has some visibility support, though with a different syntax.
2451 gcc_cv_as_hidden=yes
2455 # gnu_indirect_function type is an extension proposed at
2456 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2457 # selection of function implementation
2458 AC_ARG_ENABLE(gnu-indirect-function,
2459 [AS_HELP_STRING([--enable-gnu-indirect-function],
2460 [enable the use of the @gnu_indirect_function to glibc systems])],
2461 [case $enable_gnu_indirect_function in
2463 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2464 Valid choices are 'yes' and 'no'.]) ;;
2466 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2468 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2469 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2470 [Define if your system supports gnu indirect functions.])
2474 if test $in_tree_ld != yes ; then
2475 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2476 if echo "$ld_ver" | grep GNU > /dev/null; then
2477 if test x"$ld_is_gold" = xyes; then
2478 # GNU gold --version looks like this:
2480 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2482 # We extract the binutils version which is more familiar and specific
2483 # than the gold version.
2484 ld_vers=`echo $ld_ver | sed -n \
2485 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2487 # GNU ld --version looks like this:
2489 # GNU ld (GNU Binutils) 2.21.51.20110225
2490 ld_vers=`echo $ld_ver | sed -n \
2491 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2493 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2494 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2495 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2496 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2500 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2503 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2504 # /usr/ccs/bin/ld has been configured.
2505 ld_ver=`$gcc_cv_ld -V 2>&1`
2506 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2507 ld_vers=`echo $ld_ver | sed -n \
2508 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2509 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2510 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2518 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2519 [[if test $in_tree_ld = yes ; then
2521 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2522 && test $in_tree_ld_is_elf = yes; then
2523 gcc_cv_ld_hidden=yes
2526 gcc_cv_ld_hidden=yes
2527 if test x"$ld_is_gold" = xyes; then
2529 elif echo "$ld_ver" | grep GNU > /dev/null; then
2531 mmix-knuth-mmixware)
2532 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2536 if test 0"$ld_date" -lt 20020404; then
2537 if test -n "$ld_date"; then
2538 # If there was date string, but was earlier than 2002-04-04, fail
2540 elif test -z "$ld_vers"; then
2541 # If there was no date string nor ld version number, something is wrong
2544 test -z "$ld_vers_patch" && ld_vers_patch=0
2545 if test "$ld_vers_major" -lt 2; then
2547 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2548 gcc_cv_ld_hidden="no"
2549 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2557 # Darwin ld has some visibility support.
2558 gcc_cv_ld_hidden=yes
2560 hppa64*-*-hpux* | ia64*-*-hpux*)
2561 gcc_cv_ld_hidden=yes
2563 *-*-solaris2.1[0-9]*)
2564 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2565 # .symbolic was only added in Solaris 9 12/02.
2566 gcc_cv_ld_hidden=yes
2574 libgcc_visibility=no
2575 AC_SUBST(libgcc_visibility)
2576 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2577 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2578 libgcc_visibility=yes
2579 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2580 [Define if your assembler and linker support .hidden.])
2583 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2584 gcc_cv_ld_ro_rw_mix=unknown
2585 if test $in_tree_ld = yes ; then
2586 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2587 && test $in_tree_ld_is_elf = yes; then
2588 gcc_cv_ld_ro_rw_mix=read-write
2590 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2591 echo '.section myfoosect, "a"' > conftest1.s
2592 echo '.section myfoosect, "aw"' > conftest2.s
2593 echo '.byte 1' >> conftest2.s
2594 echo '.section myfoosect, "a"' > conftest3.s
2595 echo '.byte 0' >> conftest3.s
2596 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2597 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2598 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2599 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2600 conftest2.o conftest3.o > /dev/null 2>&1; then
2601 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2602 | sed -e '/myfoosect/!d' -e N`
2603 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2604 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2605 gcc_cv_ld_ro_rw_mix=read-only
2607 gcc_cv_ld_ro_rw_mix=read-write
2612 rm -f conftest.* conftest[123].*
2615 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2616 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2617 [Define if your linker links a mix of read-only
2618 and read-write sections into a read-write section.])
2620 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2622 gcc_AC_INITFINI_ARRAY
2624 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2625 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2633 [[# GAS versions before 2.11 do not support uleb128,
2634 # despite appearing to.
2635 # ??? There exists an elf-specific test that will crash
2636 # the assembler. Perhaps it's better to figure out whether
2637 # arbitrary sections are supported and try the test.
2638 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2639 if echo "$as_ver" | grep GNU > /dev/null; then
2640 as_vers=`echo $as_ver | sed -n \
2641 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2642 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2643 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2644 if test $as_major -eq 2 && test $as_minor -lt 11
2646 else gcc_cv_as_leb128=yes
2649 [AC_DEFINE(HAVE_AS_LEB128, 1,
2650 [Define if your assembler supports .sleb128 and .uleb128.])])
2652 # Check if we have assembler support for unwind directives.
2653 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2660 .cfi_escape 1, 2, 3, 4, 5
2664 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2665 # read-only and read-write sections, we need to make sure that the
2666 # assembler used emits read-write .eh_frame sections.
2667 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2668 if test "x$gcc_cv_objdump" != x; then
2669 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2670 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2671 gcc_cv_as_cfi_directive=no
2674 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2675 # On Solaris/x86, make sure that GCC and assembler agree on using
2676 # read-only .eh_frame sections for 64-bit.
2677 if test x$gas = xyes; then
2678 as_ix86_64_opt="--64"
2680 as_ix86_64_opt="-xarch=amd64"
2682 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2683 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2684 sed -e /.eh_frame/!d -e N | \
2685 grep READONLY > /dev/null; then
2686 gcc_cv_as_cfi_directive=yes
2688 gcc_cv_as_cfi_directive=no
2692 gcc_cv_as_cfi_directive=yes
2697 # no objdump, err on the side of caution
2698 gcc_cv_as_cfi_directive=no
2701 gcc_cv_as_cfi_directive=yes
2705 gcc_cv_as_cfi_directive=yes
2708 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2709 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2713 .cfi_adjust_cfa_offset 64
2715 .cfi_adjust_cfa_offset 128
2718 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2719 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2720 gcc_cv_as_cfi_advance_working=yes
2724 # no objdump, err on the side of caution
2725 gcc_cv_as_cfi_advance_working=no
2727 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2728 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2729 [`if test $gcc_cv_as_cfi_directive = yes \
2730 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2731 [Define 0/1 if your assembler supports CFI directives.])
2733 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2734 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2735 gcc_cv_as_cfi_personality_directive, ,,
2738 .cfi_personality 0, symbol
2740 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2741 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2742 then echo 1; else echo 0; fi`],
2743 [Define 0/1 if your assembler supports .cfi_personality.])
2745 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2746 gcc_cv_as_cfi_sections_directive, ,,
2748 .cfi_sections .debug_frame, .eh_frame
2752 win32 | pe | cygwin* | mingw32* | uwin*)
2753 # Need to check that we generated the correct relocation for the
2754 # .debug_frame section. This was fixed for binutils 2.21.
2755 gcc_cv_as_cfi_sections_directive=no
2756 if test "x$gcc_cv_objdump" != x; then
2757 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2758 grep secrel > /dev/null; then
2759 gcc_cv_as_cfi_sections_directive=yes
2764 gcc_cv_as_cfi_sections_directive=yes
2767 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2768 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2769 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2770 then echo 1; else echo 0; fi`],
2771 [Define 0/1 if your assembler supports .cfi_sections.])
2773 # GAS versions up to and including 2.11.0 may mis-optimize
2775 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2783 .section .eh_frame,"aw",@progbits
2785 .4byte .LECIE1-.LSCIE1
2799 .4byte .LEFDE1-.LASFDE1
2801 .4byte .LASFDE1-__FRAME_BEGIN__
2809 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2810 cat > conftest.lit <<EOF
2811 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2812 0010 01000000 12000000 18000000 00000000 ................
2813 0020 08000000 04080000 0044 .........D @&t@
2815 cat > conftest.big <<EOF
2816 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2817 0010 00000001 00000012 00000018 00000000 ................
2818 0020 00000008 04000000 0844 .........D @&t@
2820 # If the assembler didn't choke, and we can objdump,
2821 # and we got the correct data, then succeed.
2822 # The text in the here-document typically retains its unix-style line
2823 # endings, while the output of objdump will use host line endings.
2824 # Therefore, use diff -b for the comparisons.
2825 if test x$gcc_cv_objdump != x \
2826 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2827 | tail -3 > conftest.got \
2828 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2829 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2831 gcc_cv_as_eh_frame=yes
2832 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2833 gcc_cv_as_eh_frame=buggy
2835 # Uh oh, what do we do now?
2836 gcc_cv_as_eh_frame=no
2839 if test $gcc_cv_as_eh_frame = buggy; then
2840 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2841 [Define if your assembler mis-optimizes .eh_frame data.])
2844 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2845 [elf,2,12,0], [--fatal-warnings],
2846 [.section .rodata.str, "aMS", @progbits, 1])
2847 if test $gcc_cv_as_shf_merge = no; then
2848 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2849 [elf,2,12,0], [--fatal-warnings],
2850 [.section .rodata.str, "aMS", %progbits, 1])
2852 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2853 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2854 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2856 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2857 gcc_cv_as_comdat_group,
2858 [elf,2,16,0], [--fatal-warnings],
2859 [.section .text,"axG",@progbits,.foo,comdat])
2860 if test $gcc_cv_as_comdat_group = yes; then
2861 gcc_cv_as_comdat_group_percent=no
2862 gcc_cv_as_comdat_group_group=no
2864 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2865 gcc_cv_as_comdat_group_percent,
2866 [elf,2,16,0], [--fatal-warnings],
2867 [.section .text,"axG",%progbits,.foo,comdat])
2868 if test $gcc_cv_as_comdat_group_percent = yes; then
2869 gcc_cv_as_comdat_group_group=no
2872 # Sun as uses a completely different syntax.
2877 .group foo,".text%foo",#comdat
2878 .section ".text%foo", #alloc,#execinstr,#progbits
2883 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2885 .group foo,.text%foo,#comdat
2886 .section .text%foo, "ax", @progbits
2892 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2893 gcc_cv_as_comdat_group_group,
2897 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2898 gcc_cv_as_comdat_group_group=no
2902 if test x"$ld_is_gold" = xyes; then
2904 elif test $in_tree_ld = yes ; then
2906 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2907 && test $in_tree_ld_is_elf = yes; then
2910 elif echo "$ld_ver" | grep GNU > /dev/null; then
2912 if test 0"$ld_date" -lt 20050308; then
2913 if test -n "$ld_date"; then
2914 # If there was date string, but was earlier than 2005-03-08, fail
2916 elif test "$ld_vers_major" -lt 2; then
2918 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2925 *-*-solaris2.1[1-9]*)
2927 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2928 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2931 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2932 # least ld version 1.2267.
2933 if test "$ld_vers_major" -gt 1; then
2935 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2937 elif test "$ld_vers_minor" -ge 2267; then
2942 # Assume linkers other than GNU ld don't support COMDAT group.
2948 # Allow overriding the automatic COMDAT group tests above.
2949 AC_ARG_ENABLE(comdat,
2950 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2951 [comdat_group="$enable_comdat"])
2952 if test $comdat_group = no; then
2953 gcc_cv_as_comdat_group=no
2954 gcc_cv_as_comdat_group_percent=no
2955 gcc_cv_as_comdat_group_group=no
2957 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2958 [`if test $gcc_cv_as_comdat_group = yes \
2959 || test $gcc_cv_as_comdat_group_percent = yes \
2960 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2961 [Define 0/1 if your assembler and linker support COMDAT groups.])
2963 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2964 gcc_cv_as_discriminator,
2968 .loc 1 1 0 discriminator 1],,
2969 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2970 [Define if your assembler supports the .loc discriminator sub-directive.])])
2972 # Thread-local storage - the check is heavily parameterized.
2981 .section ".tdata","awT",@progbits
2984 ldq $27,__tls_get_addr($29) !literal!1
2985 lda $16,foo($29) !tlsgd!1
2986 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2987 ldq $27,__tls_get_addr($29) !literal!2
2988 lda $16,foo($29) !tlsldm!2
2989 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2990 ldq $1,foo($29) !gotdtprel
2991 ldah $2,foo($29) !dtprelhi
2992 lda $3,foo($2) !dtprello
2993 lda $4,foo($29) !dtprel
2994 ldq $1,foo($29) !gottprel
2995 ldah $2,foo($29) !tprelhi
2996 lda $3,foo($2) !tprello
2997 lda $4,foo($29) !tprel'
3000 tls_as_opt=--fatal-warnings
3002 cris-*-*|crisv32-*-*)
3004 .section ".tdata","awT",@progbits
3011 tls_as_opt=--fatal-warnings
3015 .section ".tdata","awT",@progbits
3027 .section ".tdata","awT",@progbits
3031 addil LT%foo-$tls_gdidx$,gp
3032 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3035 addil LT%foo-$tls_ldidx$,gp
3037 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3038 addil LR%foo-$tls_dtpoff$,%ret0
3039 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3041 addil LT%foo-$tls_ieoff$,gp
3042 ldw RT%foo-$tls_ieoff$(%r1),%t2
3045 addil LR%foo-$tls_leoff$,%t1
3046 ldo RR%foo-$tls_leoff$(%r1),%t2'
3049 tls_as_opt=--fatal-warnings
3053 .section ".tdata","awT",%progbits
3064 i[34567]86-*-* | x86_64-*-*)
3066 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3073 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3075 .section .tdata,"awt",@progbits'
3080 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3081 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3085 .section ".tdata","awT",@progbits'
3089 tls_as_opt="--fatal-warnings"
3093 conftest_s="$conftest_s
3097 leal foo@tlsgd(,%ebx,1), %eax
3098 leal foo@tlsldm(%ebx), %eax
3099 leal foo@dtpoff(%eax), %edx
3100 movl foo@gottpoff(%ebx), %eax
3101 subl foo@gottpoff(%ebx), %eax
3102 addl foo@gotntpoff(%ebx), %eax
3103 movl foo@indntpoff, %eax
3104 movl \$foo@tpoff, %eax
3105 subl \$foo@tpoff, %eax
3106 leal foo@ntpoff(%ecx), %eax"
3109 if test x$on_solaris = xyes; then
3111 yes) tls_as_opt="$tls_as_opt --64" ;;
3112 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3115 conftest_s="$conftest_s
3119 leaq foo@tlsgd(%rip), %rdi
3120 leaq foo@tlsld(%rip), %rdi
3121 leaq foo@dtpoff(%rax), %rdx
3122 movq foo@gottpoff(%rip), %rax
3123 movq \$foo@tpoff, %rax"
3129 .section ".tdata","awT",@progbits
3132 addl r16 = @ltoff(@dtpmod(foo#)), gp
3133 addl r17 = @ltoff(@dtprel(foo#)), gp
3134 addl r18 = @ltoff(@tprel(foo#)), gp
3135 addl r19 = @dtprel(foo#), gp
3136 adds r21 = @dtprel(foo#), r13
3137 movl r23 = @dtprel(foo#)
3138 addl r20 = @tprel(foo#), gp
3139 adds r22 = @tprel(foo#), r13
3140 movl r24 = @tprel(foo#)'
3143 tls_as_opt=--fatal-warnings
3147 .section .tdata,"awT",@progbits
3151 addik r5,r20,x@TLSGD
3152 addik r5,r20,x@TLSLDM'
3155 tls_as_opt='--fatal-warnings'
3159 .section .tdata,"awT",@progbits
3163 addiu $4, $28, %tlsgd(x)
3164 addiu $4, $28, %tlsldm(x)
3165 lui $4, %dtprel_hi(x)
3166 addiu $4, $4, %dtprel_lo(x)
3167 lw $4, %gottprel(x)($28)
3168 lui $4, %tprel_hi(x)
3169 addiu $4, $4, %tprel_lo(x)'
3172 tls_as_opt='-32 --fatal-warnings'
3176 .section .tdata,"awT",@progbits
3181 move.l x@TLSGD(%a5),%a0
3182 move.l x@TLSLDM(%a5),%a0
3183 move.l x@TLSLDO(%a5),%a0
3184 move.l x@TLSIE(%a5),%a0
3185 move.l x@TLSLE(%a5),%a0'
3188 tls_as_opt='--fatal-warnings'
3192 .section ".tdata","awT",@progbits'
3195 tls_as_opt="--fatal-warnings"
3199 .section ".tdata","awT",%progbits
3203 add x0, x0, #:tlsgd_lo12:x
3208 tls_as_opt='--fatal-warnings'
3212 .extern __get_tpointer
3230 .section ".tdata","awT",@progbits
3238 addi 3,2,ld0@got@tlsgd
3244 addi 3,2,x1@got@tlsld
3250 addis 9,3,x2@dtprel@ha
3251 addi 9,9,x2@dtprel@l
3254 ld 9,x3@got@dtprel(2)
3260 tls_as_opt="-a64 --fatal-warnings"
3264 .section ".tdata","awT",@progbits
3272 addi 3,31,ld0@got@tlsgd
3274 addi 3,31,x1@got@tlsld
3277 addis 9,3,x2@dtprel@ha
3278 addi 9,9,x2@dtprel@l
3279 lwz 9,x3@got@tprel(31)
3282 addis 9,2,x2@tprel@ha
3283 addi 9,9,x2@tprel@l'
3286 tls_as_opt="-a32 --fatal-warnings"
3290 .section ".tdata","awT",@progbits
3299 l %r1,foo@GOTNTPOFF(%r12)
3300 l %r1,0(%r1):tls_load:foo
3301 bas %r14,0(%r1,%r13):tls_gdcall:foo
3302 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3305 tls_as_opt="-m31 --fatal-warnings"
3309 .section ".tdata","awT",@progbits
3317 lg %r1,foo@GOTNTPOFF(%r12)
3318 larl %r1,foo@INDNTPOFF
3319 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3320 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3323 tls_as_opt="-m64 -Aesame --fatal-warnings"
3325 sh-*-* | sh[34]-*-*)
3327 .section ".tdata","awT",@progbits
3337 tls_as_opt=--fatal-warnings
3341 sparc*-sun-solaris2.*)
3348 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3350 .section ".tdata",#alloc,#write,#tls'
3355 .section ".tdata","awT",@progbits'
3358 tls_as_opt="-32 --fatal-warnings"
3360 conftest_s="$conftest_s
3363 sethi %tgd_hi22(foo), %o0
3364 add %o0, %tgd_lo10(foo), %o1
3365 add %l7, %o1, %o0, %tgd_add(foo)
3366 call __tls_get_addr, %tgd_call(foo)
3367 sethi %tldm_hi22(foo), %l1
3368 add %l1, %tldm_lo10(foo), %l2
3369 add %l7, %l2, %o0, %tldm_add(foo)
3370 call __tls_get_addr, %tldm_call(foo)
3371 sethi %tldo_hix22(foo), %l3
3372 xor %l3, %tldo_lox10(foo), %l4
3373 add %o0, %l4, %l5, %tldo_add(foo)
3374 sethi %tie_hi22(foo), %o3
3375 add %o3, %tie_lo10(foo), %o3
3376 ld [%l7 + %o3], %o2, %tie_ld(foo)
3377 add %g7, %o2, %o4, %tie_add(foo)
3378 sethi %tle_hix22(foo), %l1
3379 xor %l1, %tle_lox10(foo), %o5
3380 ld [%g7 + %o5], %o1"
3384 .section ".tdata","awT",@progbits
3387 addli r0, zero, tls_gd(foo)
3388 auli r0, zero, tls_gd_ha16(foo)
3389 addli r0, r0, tls_gd_lo16(foo)
3391 addli r0, zero, tls_ie(foo)
3392 auli r0, r0, tls_ie_ha16(foo)
3393 addli r0, r0, tls_ie_lo16(foo)'
3396 tls_as_opt="--fatal-warnings"
3400 .section ".tdata","awT",@progbits
3403 shl16insli r0, zero, hw0_last_tls_gd(foo)
3404 shl16insli r0, zero, hw1_last_tls_gd(foo)
3405 shl16insli r0, r0, hw0_tls_gd(foo)
3407 shl16insli r0, zero, hw1_last_tls_ie(foo)
3408 shl16insli r0, r0, hw0_tls_ie(foo)'
3411 tls_as_opt="--fatal-warnings"
3415 .section ".tdata","awT",@progbits
3418 movi a8, foo@TLSFUNC
3419 movi a10, foo@TLSARG
3420 callx8.tls a8, foo@TLSCALL'
3427 if test "x$enable_tls" = xno ; then
3428 : # TLS explicitly disabled.
3429 elif test "x$enable_tls" = xyes ; then
3430 set_have_as_tls=yes # TLS explicitly enabled.
3431 elif test -z "$tls_first_major"; then
3432 : # If we don't have a check, assume no support.
3434 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3435 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3436 [set_have_as_tls=yes])
3438 if test $set_have_as_tls = yes ; then
3439 AC_DEFINE(HAVE_AS_TLS, 1,
3440 [Define if your assembler and linker support thread-local storage.])
3443 # Target-specific assembler checks.
3445 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3446 gcc_cv_ld_static_dynamic=no
3447 gcc_cv_ld_static_option='-Bstatic'
3448 gcc_cv_ld_dynamic_option='-Bdynamic'
3449 if test $in_tree_ld = yes ; then
3450 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3451 gcc_cv_ld_static_dynamic=yes
3453 elif test x$gcc_cv_ld != x; then
3454 # Check if linker supports -Bstatic/-Bdynamic option
3455 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3456 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3457 gcc_cv_ld_static_dynamic=yes
3460 # AIX ld uses -b flags
3461 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3462 gcc_cv_ld_static_dynamic=yes
3463 gcc_cv_ld_static_option="-bstatic"
3464 gcc_cv_ld_dynamic_option="-bdynamic"
3466 # HP-UX ld uses -a flags to select between shared and archive.
3468 if test x"$gnu_ld" = xno; then
3469 gcc_cv_ld_static_dynamic=yes
3470 gcc_cv_ld_static_option="-aarchive_shared"
3471 gcc_cv_ld_dynamic_option="-adefault"
3474 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3476 gcc_cv_ld_static_dynamic=yes
3481 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3482 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3483 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3484 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3485 [Define to the linker option to disable use of shared objects.])
3486 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3487 [Define to the linker option to enable use of shared objects.])
3489 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3491 if test x"$demangler_in_ld" = xyes; then
3492 AC_MSG_CHECKING(linker --demangle support)
3493 gcc_cv_ld_demangle=no
3494 if test $in_tree_ld = yes; then
3495 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3496 gcc_cv_ld_demangle=yes
3498 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3499 # Check if the GNU linker supports --demangle option
3500 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3501 gcc_cv_ld_demangle=yes
3504 if test x"$gcc_cv_ld_demangle" = xyes; then
3505 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3506 [Define if your linker supports --demangle option.])
3508 AC_MSG_RESULT($gcc_cv_ld_demangle)
3511 AC_MSG_CHECKING(linker plugin support)
3513 if test -f liblto_plugin.la; then
3514 save_ld_ver="$ld_ver"
3515 save_ld_vers_major="$ld_vers_major"
3516 save_ld_vers_minor="$ld_vers_minor"
3517 save_ld_is_gold="$ld_is_gold"
3521 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3523 # FIXME: ld_is_gold?
3524 ld_vers_major="$gcc_cv_gld_major_version"
3525 ld_vers_minor="$gcc_cv_gld_minor_version"
3527 # Determine plugin linker version.
3528 # FIXME: Partial duplicate from above, generalize.
3530 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3531 if echo "$ld_ver" | grep GNU > /dev/null; then
3532 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3534 ld_vers=`echo $ld_ver | sed -n \
3535 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3537 ld_vers=`echo $ld_ver | sed -n \
3538 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3540 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3541 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3546 # Determine plugin support.
3547 if echo "$ld_ver" | grep GNU > /dev/null; then
3548 # Require GNU ld or gold 2.21+ for plugin support by default.
3549 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3551 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3552 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3557 ld_ver="$save_ld_ver"
3558 ld_vers_major="$save_ld_vers_major"
3559 ld_vers_minor="$save_ld_vers_minor"
3560 ld_is_gold="$save_ld_is_gold"
3562 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3563 [Define to the level of your linker's plugin support.])
3564 AC_MSG_RESULT($gcc_cv_lto_plugin)
3568 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3569 [-mabi=lp64], [.text],,,)
3570 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3571 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3572 [Define if your assembler supports the -mabi option.])
3574 if test x$with_abi = xilp32; then
3575 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3576 Upgrade the Assembler.])
3578 if test x"$with_multilib_list" = xdefault; then
3579 TM_MULTILIB_CONFIG=lp64
3581 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3582 for aarch64_multilib in ${aarch64_multilibs}; do
3583 case ${aarch64_multilib} in
3585 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3586 Upgrade the Assembler.])
3594 # Check if we have binutils support for relocations types needed by -fpic
3595 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3598 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3599 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3600 [Define if your assembler supports relocs needed by -fpic.])])
3601 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3602 AC_ARG_ENABLE(fix-cortex-a53-835769,
3604 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3605 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3606 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3607 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3612 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3617 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3618 Valid choices are 'yes' and 'no'.])
3624 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3625 AC_ARG_ENABLE(fix-cortex-a53-843419,
3627 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3628 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3629 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3630 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3635 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3640 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3641 Valid choices are 'yes' and 'no'.])
3649 # All TARGET_ABI_OSF targets.
3650 alpha*-*-linux* | alpha*-*-*bsd*)
3651 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3652 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3655 extbl $3, $2, $3 !lituse_bytoff!1
3656 ldq $2, a($29) !literal!1
3657 ldq $4, b($29) !literal!2
3658 ldq_u $3, 0($2) !lituse_base!1
3659 ldq $27, f($29) !literal!5
3660 jsr $26, ($27), f !lituse_jsr!5
3661 ldah $29, 0($26) !gpdisp!3
3662 lda $0, c($29) !gprel
3663 ldah $1, d($29) !gprelhigh
3664 lda $1, d($1) !gprellow
3665 lda $29, 0($29) !gpdisp!3],,
3666 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3667 [Define if your assembler supports explicit relocations.])])
3668 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3669 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3672 ldq $27, a($29) !literal!1
3673 jsr $26, ($27), a !lituse_jsrdirect!1],,
3674 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3675 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3679 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3680 [--mlink-relax], [.text],,
3681 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3682 [Define if your avr assembler supports --mlink-relax option.])])
3684 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3686 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3687 [Define if your avr assembler supports -mrmw option.])])
3691 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3692 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3693 [-no-mul-bug-abort], [.text],,
3694 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3695 [Define if your assembler supports the -no-mul-bug-abort option.])])
3699 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3700 [.register %g2, #scratch],,
3701 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3702 [Define if your assembler supports .register.])])
3704 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3705 [.section "nobits",#alloc,#write,#nobits
3706 .section "progbits",#alloc,#write,#progbits])
3707 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3708 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3709 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3711 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3713 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3714 [Define if your assembler supports -relax option.])])
3716 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3717 gcc_cv_as_sparc_gotdata_op,,
3724 sethi %gdop_hix22(foo), %g1
3725 xor %g1, %gdop_lox10(foo), %g1
3726 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3727 [if test x$gcc_cv_ld != x \
3728 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3729 if test x$gcc_cv_objdump != x; then
3730 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3731 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3732 gcc_cv_as_sparc_gotdata_op=no
3734 gcc_cv_as_sparc_gotdata_op=yes
3739 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3740 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3742 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3743 gcc_cv_as_sparc_ua_pcrel,,
3751 .uaword %r_disp32(foo)],
3752 [if test x$gcc_cv_ld != x \
3753 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3754 gcc_cv_as_sparc_ua_pcrel=yes
3757 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3758 [Define if your assembler and linker support unaligned PC relative relocs.])
3760 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3761 gcc_cv_as_sparc_ua_pcrel_hidden,,
3766 .uaword %r_disp32(foo)
3767 .byte 0x32, 0x33, 0x34
3772 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3773 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3774 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3775 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3776 if $gcc_cv_objdump -R conftest 2> /dev/null \
3777 | grep 'DISP32' > /dev/null 2>&1; then
3780 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3784 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3785 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3786 ]) # unaligned pcrel relocs
3788 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3789 gcc_cv_as_sparc_offsetable_lo10,,
3792 or %g1, %lo(ab) + 12, %g1
3793 or %g1, %lo(ab + 12), %g1],
3794 [if test x$gcc_cv_objdump != x \
3795 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3796 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3797 gcc_cv_as_sparc_offsetable_lo10=yes
3799 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3800 [Define if your assembler supports offsetable %lo().])])
3802 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3803 gcc_cv_as_sparc_fmaf,,
3806 .register %g2, #scratch
3807 .register %g3, #scratch
3809 fmaddd %f0, %f2, %f4, %f6
3810 addxccc %g1, %g2, %g3
3811 fsrl32 %f2, %f4, %f8
3812 fnaddd %f10, %f12, %f14],,
3813 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3814 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3816 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3817 gcc_cv_as_sparc_sparc4,,
3820 .register %g2, #scratch
3821 .register %g3, #scratch
3824 1: cwbneg %g2, %g3, 1f
3827 aes_kexpand0 %f4, %f6, %f8
3828 des_round %f38, %f40, %f42, %f44
3829 camellia_f %f54, %f56, %f58, %f60
3830 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3831 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3832 [Define if your assembler supports SPARC4 instructions.])])
3834 gcc_GAS_CHECK_FEATURE([LEON instructions],
3835 gcc_cv_as_sparc_leon,,
3838 .register %g2, #scratch
3839 .register %g3, #scratch
3843 casa [[%g2]] 0xb, %g3, %g1],,
3844 [AC_DEFINE(HAVE_AS_LEON, 1,
3845 [Define if your assembler supports LEON instructions.])])
3849 i[34567]86-*-* | x86_64-*-*)
3853 # Full C++ conformance when using a shared libstdc++-v3 requires some
3854 # support from the Cygwin DLL, which in more recent versions exports
3855 # wrappers to aid in interposing and redirecting operators new, delete,
3856 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3857 # are configuring for a version of Cygwin that exports the wrappers.
3858 if test x$host = x$target && test x$host_cpu = xi686; then
3859 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3861 # Can't check presence of libc functions during cross-compile, so
3862 # we just have to assume we're building for an up-to-date target.
3863 gcc_ac_cygwin_dll_wrappers=yes
3865 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3866 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3867 [Define if you want to generate code by default that assumes that the
3868 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3871 cygwin* | pe | mingw32* | interix*)
3872 # Recent binutils allows the three-operand form of ".comm" on PE. This
3873 # definition is used unconditionally to initialise the default state of
3874 # the target option variable that governs usage of the feature.
3875 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3876 [2,19,52],,[.comm foo,1,32])
3877 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3878 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3879 [Define if your assembler supports specifying the alignment
3880 of objects allocated using the GAS .comm command.])
3881 # Used for DWARF 2 in PE
3882 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3883 gcc_cv_as_ix86_pe_secrel32,
3889 [if test x$gcc_cv_ld != x \
3890 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3891 gcc_cv_as_ix86_pe_secrel32=yes
3894 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3895 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3896 # Test if the assembler supports the extended form of the .section
3897 # directive that specifies section alignment. LTO support uses this,
3898 # but normally only after installation, so we warn but don't fail the
3899 # configure if LTO is enabled but the assembler does not support it.
3900 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3901 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3902 if test x$gcc_cv_as_section_has_align != xyes; then
3903 case ",$enable_languages," in
3905 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3912 # Test if the assembler supports the section flag 'e' for specifying
3913 # an excluded section.
3914 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3915 [2,22,51], [--fatal-warnings],
3918 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3919 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3920 [Define if your assembler supports specifying the section flag e.])
3922 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3923 gcc_cv_as_ix86_filds,,,
3924 [filds (%ebp); fists (%ebp)],,
3925 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3926 [Define if your assembler uses filds and fists mnemonics.])])
3928 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3929 gcc_cv_as_ix86_fildq,,,
3930 [fildq (%ebp); fistpq (%ebp)],,
3931 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3932 [Define if your assembler uses fildq and fistq mnemonics.])])
3934 gcc_GAS_CHECK_FEATURE([cmov syntax],
3935 gcc_cv_as_ix86_cmov_sun_syntax,,,
3936 [cmovl.l %edx, %eax],,
3937 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3938 [Define if your assembler supports the Sun syntax for cmov.])])
3940 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3941 gcc_cv_as_ix86_ffreep,,,
3943 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3944 [Define if your assembler supports the ffreep mnemonic.])])
3946 gcc_GAS_CHECK_FEATURE([.quad directive],
3947 gcc_cv_as_ix86_quad,,,
3949 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3950 [Define if your assembler supports the .quad directive.])])
3952 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3953 gcc_cv_as_ix86_sahf,,,
3956 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3957 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3959 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3960 gcc_cv_as_ix86_interunit_movq,,,
3964 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3965 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3966 [Define if your assembler supports interunit movq mnemonic.])
3968 gcc_GAS_CHECK_FEATURE([hle prefixes],
3969 gcc_cv_as_ix86_hle,,,
3970 [lock xacquire cmpxchg %esi, (%ecx)],,
3971 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3972 [Define if your assembler supports HLE prefixes.])])
3974 gcc_GAS_CHECK_FEATURE([swap suffix],
3975 gcc_cv_as_ix86_swap,,,
3976 [movl.s %esp, %ebp],,
3977 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3978 [Define if your assembler supports the swap suffix.])])
3980 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3981 gcc_cv_as_ix86_diff_sect_delta,,,
3989 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3990 [Define if your assembler supports the subtraction of symbols in different sections.])])
3992 # These two are used unconditionally by i386.[ch]; it is to be defined
3993 # to 1 if the feature is present, 0 otherwise.
3994 as_ix86_gotoff_in_data_opt=
3995 if test x$gas = xyes; then
3996 as_ix86_gotoff_in_data_opt="--32"
3998 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3999 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4000 [$as_ix86_gotoff_in_data_opt],
4006 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4007 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4008 [Define true if the assembler supports '.long foo@GOTOFF'.])
4010 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4011 gcc_cv_as_ix86_rep_lock_prefix,,,
4017 lock addl %edi, (%eax,%esi)
4018 lock orl $0, (%esp)],,
4019 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4020 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4022 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4023 gcc_cv_as_ix86_ud2,,,
4025 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4026 [Define if your assembler supports the 'ud2' mnemonic.])])
4028 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4029 gcc_cv_as_ix86_tlsgdplt,,,
4030 [call tls_gd@tlsgdplt],
4031 [if test x$gcc_cv_ld != x \
4032 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4033 gcc_cv_as_ix86_tlsgdplt=yes
4036 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4037 [Define if your assembler and linker support @tlsgdplt.])])
4040 .section .tdata,"aw'$tls_section_flag'",@progbits
4042 .section .text,"ax",@progbits
4043 call tls_ld@tlsldmplt'
4044 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4045 gcc_cv_as_ix86_tlsldmplt,,,
4047 [if test x$gcc_cv_ld != x \
4048 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4049 gcc_cv_as_ix86_tlsldmplt=yes
4052 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4053 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4054 [Define to 1 if your assembler and linker support @tlsldmplt.])
4056 # Enforce 32-bit output with gas and gld.
4057 if test x$gas = xyes; then
4058 as_ix86_tls_ldm_opt="--32"
4060 if echo "$ld_ver" | grep GNU > /dev/null; then
4061 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4062 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4064 ld_ix86_tls_ldm_opt="-melf_i386"
4068 .section .text,"ax",@progbits
4070 .type _start, @function
4072 leal value@tlsldm(%ebx), %eax
4073 call ___tls_get_addr@plt
4075 .section .tdata,"aw'$tls_section_flag'",@progbits
4076 .type value, @object
4078 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4079 gcc_cv_as_ix86_tlsldm,,
4080 [$as_ix86_tls_ldm_opt],
4082 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4083 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4084 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4085 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4086 gcc_cv_as_ix86_tlsldm=yes
4090 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4091 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4092 [Define to 1 if your assembler and linker support @tlsldm.])
4097 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4098 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4100 addl r15 = @ltoffx(x#), gp
4102 ld8.mov r16 = [[r15]], x#],,
4103 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4104 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4110 *-*-aix*) conftest_s=' .machine "pwr5"
4114 gcc_GAS_CHECK_FEATURE([.machine directive support],
4115 gcc_cv_as_machine_directive,,,
4116 [ .machine ppc7400])
4117 if test x$gcc_cv_as_machine_directive != xyes; then
4118 echo "*** This target requires an assembler supporting \".machine\"" >&2
4119 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4120 test x$build = x$target && exit 1
4124 *) conftest_s=' .machine power4
4129 gcc_GAS_CHECK_FEATURE([mfcr field support],
4130 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4132 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4133 [Define if your assembler supports mfcr field.])])
4136 *-*-aix*) conftest_s=' .machine "pwr5"
4139 *) conftest_s=' .machine power5
4144 gcc_GAS_CHECK_FEATURE([popcntb support],
4145 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4147 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4148 [Define if your assembler supports popcntb field.])])
4151 *-*-aix*) conftest_s=' .machine "pwr5x"
4154 *) conftest_s=' .machine power5
4159 gcc_GAS_CHECK_FEATURE([fp round support],
4160 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4162 [AC_DEFINE(HAVE_AS_FPRND, 1,
4163 [Define if your assembler supports fprnd.])])
4166 *-*-aix*) conftest_s=' .machine "pwr6"
4169 *) conftest_s=' .machine power6
4174 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4175 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4177 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4178 [Define if your assembler supports mffgpr and mftgpr.])])
4181 *-*-aix*) conftest_s=' .csect .text[[PR]]
4183 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4187 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4188 *) conftest_s=' .text
4190 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4193 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4194 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4196 [AC_DEFINE(HAVE_AS_REL16, 1,
4197 [Define if your assembler supports R_PPC_REL16 relocs.])])
4200 *-*-aix*) conftest_s=' .machine "pwr6"
4203 *) conftest_s=' .machine power6
4208 gcc_GAS_CHECK_FEATURE([compare bytes support],
4209 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4211 [AC_DEFINE(HAVE_AS_CMPB, 1,
4212 [Define if your assembler supports cmpb.])])
4215 *-*-aix*) conftest_s=' .machine "pwr6"
4218 *) conftest_s=' .machine power6
4223 gcc_GAS_CHECK_FEATURE([decimal float support],
4224 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4226 [AC_DEFINE(HAVE_AS_DFP, 1,
4227 [Define if your assembler supports DFP instructions.])])
4230 *-*-aix*) conftest_s=' .machine "pwr7"
4233 *) conftest_s=' .machine power7
4238 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4239 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4241 [AC_DEFINE(HAVE_AS_VSX, 1,
4242 [Define if your assembler supports VSX instructions.])])
4245 *-*-aix*) conftest_s=' .machine "pwr7"
4248 *) conftest_s=' .machine power7
4253 gcc_GAS_CHECK_FEATURE([popcntd support],
4254 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4256 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4257 [Define if your assembler supports POPCNTD instructions.])])
4260 *-*-aix*) conftest_s=' .machine "pwr8"
4261 .csect .text[[PR]]';;
4262 *) conftest_s=' .machine power8
4266 gcc_GAS_CHECK_FEATURE([power8 support],
4267 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4269 [AC_DEFINE(HAVE_AS_POWER8, 1,
4270 [Define if your assembler supports POWER8 instructions.])])
4273 *-*-aix*) conftest_s=' .csect .text[[PR]]
4275 *) conftest_s=' .text
4279 gcc_GAS_CHECK_FEATURE([lwsync support],
4280 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4282 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4283 [Define if your assembler supports LWSYNC instructions.])])
4286 *-*-aix*) conftest_s=' .machine "476"
4289 *) conftest_s=' .machine "476"
4294 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4295 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4297 [AC_DEFINE(HAVE_AS_DCI, 1,
4298 [Define if your assembler supports the DCI/ICI instructions.])])
4300 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4301 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4302 [.gnu_attribute 4,1],,
4303 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4304 [Define if your assembler supports .gnu_attribute.])])
4306 gcc_GAS_CHECK_FEATURE([tls marker support],
4307 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4308 [ bl __tls_get_addr(x@tlsgd)],,
4309 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4310 [Define if your assembler supports arg info for __tls_get_addr.])])
4314 gcc_GAS_CHECK_FEATURE([.ref support],
4315 gcc_cv_as_aix_ref, [2,21,0],,
4316 [ .csect stuff[[rw]]
4322 [AC_DEFINE(HAVE_AS_REF, 1,
4323 [Define if your assembler supports .ref])])
4329 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4330 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4331 [ lw $4,%gp_rel(foo)($4)],,
4332 [if test x$target_cpu_default = x
4333 then target_cpu_default=MASK_EXPLICIT_RELOCS
4334 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4336 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4337 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4338 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4339 [Define if the assembler understands -mno-shared.])])
4341 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4342 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4343 [.gnu_attribute 4,1],,
4344 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4345 [Define if your assembler supports .gnu_attribute.])])
4347 gcc_GAS_CHECK_FEATURE([.module support],
4348 gcc_cv_as_mips_dot_module,,[-32],
4351 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4352 [Define if your assembler supports .module.])])
4353 if test x$gcc_cv_as_mips_dot_module = xno \
4354 && test x$with_fp_32 != x; then
4356 [Requesting --with-fp-32= requires assembler support for .module.])
4359 gcc_GAS_CHECK_FEATURE([.micromips support],
4360 gcc_cv_as_micromips_support,,[--fatal-warnings],
4362 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4363 [Define if your assembler supports the .set micromips directive])])
4365 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4366 gcc_cv_as_mips_dtprelword, [2,18,0],,
4367 [.section .tdata,"awT",@progbits
4371 .dtprelword x+0x8000],,
4372 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4373 [Define if your assembler supports .dtprelword.])])
4375 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4376 gcc_cv_as_mips_dspr1_mult,,,
4386 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4387 [Define if your assembler supports DSPR1 mult.])])
4389 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4390 gcc_cv_as_ld_jalr_reloc=no
4391 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4392 if test $in_tree_ld = yes ; then
4393 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4394 && test $in_tree_ld_is_elf = yes; then
4395 gcc_cv_as_ld_jalr_reloc=yes
4397 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4398 echo ' .ent x' > conftest.s
4399 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4400 echo ' lw $25,%call16(y)($28)' >> conftest.s
4401 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4402 echo '1: jalr $25' >> conftest.s
4403 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4404 echo '1: jalr $25' >> conftest.s
4405 echo ' .end x' >> conftest.s
4406 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4407 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4408 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4409 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4410 gcc_cv_as_ld_jalr_reloc=yes
4416 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4417 if test x$target_cpu_default = x; then
4418 target_cpu_default=MASK_RELAX_PIC_CALLS
4420 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4423 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4425 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4426 [gcc_cv_ld_mips_personality_relaxation],
4427 [gcc_cv_ld_mips_personality_relaxation=no
4428 if test $in_tree_ld = yes ; then
4429 if test "$gcc_cv_gld_major_version" -eq 2 \
4430 -a "$gcc_cv_gld_minor_version" -ge 21 \
4431 -o "$gcc_cv_gld_major_version" -gt 2; then
4432 gcc_cv_ld_mips_personality_relaxation=yes
4434 elif test x$gcc_cv_as != x \
4435 -a x$gcc_cv_ld != x \
4436 -a x$gcc_cv_readelf != x ; then
4437 cat > conftest.s <<EOF
4439 .cfi_personality 0x80,indirect_ptr
4446 .section .data,"aw",@progbits
4450 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4451 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4452 if $gcc_cv_readelf -d conftest 2>&1 \
4453 | grep TEXTREL > /dev/null 2>&1; then
4455 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4456 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4459 gcc_cv_ld_mips_personality_relaxation=yes
4463 rm -f conftest.s conftest.o conftest])
4464 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4465 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4466 [Define if your linker can relax absolute .eh_frame personality
4467 pointers into PC-relative form.])
4470 gcc_GAS_CHECK_FEATURE([-mnan= support],
4471 gcc_cv_as_mips_nan,,
4473 [AC_DEFINE(HAVE_AS_NAN, 1,
4474 [Define if the assembler understands -mnan=.])])
4475 if test x$gcc_cv_as_mips_nan = xno \
4476 && test x$with_nan != x; then
4478 [Requesting --with-nan= requires assembler support for -mnan=])
4482 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4483 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4484 [.gnu_attribute 8,1],,
4485 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4486 [Define if your assembler supports .gnu_attribute.])])
4490 # Mips and HP-UX need the GNU assembler.
4491 # Linux on IA64 might be able to use the Intel assembler.
4494 mips*-*-* | *-*-hpux* )
4495 if test x$gas_flag = xyes \
4496 || test x"$host" != x"$build" \
4497 || test ! -x "$gcc_cv_as" \
4498 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4501 echo "*** This configuration requires the GNU assembler" >&2
4507 # ??? Not all targets support dwarf2 debug_line, even within a version
4508 # of gas. Moreover, we need to emit a valid instruction to trigger any
4509 # info to the output file. So, as supported targets are added to gas 2.11,
4510 # add some instruction here to (also) show we expect this might work.
4511 # ??? Once 2.11 is released, probably need to add first known working
4512 # version to the per-target configury.
4514 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4515 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4516 | visium | xstormy16 | xtensa)
4526 if test x"$insn" != x; then
4528 .file 1 \"conftest.s\"
4531 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4532 gcc_cv_as_dwarf2_debug_line,
4533 [elf,2,11,0],, [$conftest_s],
4534 [if test x$gcc_cv_objdump != x \
4535 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4536 | grep debug_line > /dev/null 2>&1; then
4537 gcc_cv_as_dwarf2_debug_line=yes
4540 # The .debug_line file table must be in the exact order that
4541 # we specified the files, since these indices are also used
4542 # by DW_AT_decl_file. Approximate this test by testing if
4543 # the assembler bitches if the same index is assigned twice.
4544 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4545 gcc_cv_as_dwarf2_file_buggy,,,
4549 if test $gcc_cv_as_dwarf2_debug_line = yes \
4550 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4551 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4552 [Define if your assembler supports dwarf2 .file/.loc directives,
4553 and preserves file table indices exactly as given.])
4556 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4557 gcc_cv_as_gdwarf2_flag,
4558 [elf,2,11,0], [--gdwarf2], [$insn],,
4559 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4560 [Define if your assembler supports the --gdwarf2 option.])])
4562 gcc_GAS_CHECK_FEATURE([--gstabs option],
4563 gcc_cv_as_gstabs_flag,
4564 [elf,2,11,0], [--gstabs], [$insn],,
4565 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4566 [Define if your assembler supports the --gstabs option.])])
4568 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4569 gcc_cv_as_debug_prefix_map_flag,
4570 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4571 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4572 [Define if your assembler supports the --debug-prefix-map option.])])
4575 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4576 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4577 [# gas compiled without zlib cannot compress debug sections and warns
4578 # about it, but still exits successfully. So check for this, too.
4579 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4581 gcc_cv_as_compress_debug=0
4582 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4584 gcc_cv_as_compress_debug=1
4585 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4586 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4588 gcc_cv_as_compress_debug=0
4589 # FIXME: Future gas versions will support ELF gABI style via
4590 # --compress-debug-sections[=type].
4592 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4593 [Define to the level of your assembler's compressed debug section support.])
4594 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4595 [Define to the assembler option to enable compressed debug sections.])
4596 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4597 [Define to the assembler option to disable compressed debug sections.])
4599 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4602 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4603 [Define if your assembler supports .lcomm with an alignment field.])])
4605 if test x$with_sysroot = x && test x$host = x$target \
4606 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4607 && test "$prefix" != "NONE"; then
4608 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4609 [Define to PREFIX/include if cpp should also search that directory.])
4612 # Determine the version of glibc, if any, used on the target.
4613 AC_MSG_CHECKING([for target glibc version])
4614 AC_ARG_WITH([glibc-version],
4615 [AS_HELP_STRING([--with-glibc-version=M.N],
4616 [assume GCC used with glibc version M.N or later])], [
4617 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4618 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4619 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4621 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4623 glibc_version_major=0
4624 glibc_version_minor=0
4625 [if test -f $target_header_dir/features.h \
4626 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4627 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4628 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4629 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4631 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4632 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4633 [GNU C Library major version number used on the target, or 0.])
4634 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4635 [GNU C Library minor version number used on the target, or 0.])
4637 AC_ARG_ENABLE(gnu-unique-object,
4638 [AS_HELP_STRING([--enable-gnu-unique-object],
4639 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4640 [case $enable_gnu_unique_object in
4642 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4643 Valid choices are 'yes' and 'no'.]) ;;
4645 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4647 [.type foo, '$target_type_format_char'gnu_unique_object],,
4648 # We need to unquote above to to use the definition from config.gcc.
4649 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4650 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4652 if test x$enable_gnu_unique_object = xyes; then
4653 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4654 [Define if your assembler supports @gnu_unique_object.])
4657 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4658 [gcc_cv_as_line_zero],
4659 [gcc_cv_as_line_zero=no
4660 if test $in_tree_gas = yes; then
4661 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4662 elif test "x$gcc_cv_as" != x; then
4663 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4664 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4665 test "x`cat conftest.out`" = x
4667 gcc_cv_as_line_zero=yes
4669 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4670 cat conftest.s >&AS_MESSAGE_LOG_FD
4671 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4672 cat conftest.out >&AS_MESSAGE_LOG_FD
4674 rm -f conftest.o conftest.s conftest.out
4676 if test "x$gcc_cv_as_line_zero" = xyes; then
4677 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4678 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4681 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4682 gcc_cv_ld_eh_frame_hdr=no
4683 if test $in_tree_ld = yes ; then
4684 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4685 && test $in_tree_ld_is_elf = yes; then
4686 gcc_cv_ld_eh_frame_hdr=yes
4688 elif test x$gcc_cv_ld != x; then
4689 if echo "$ld_ver" | grep GNU > /dev/null; then
4690 # Check if linker supports --eh-frame-hdr option
4691 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4692 gcc_cv_ld_eh_frame_hdr=yes
4697 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4698 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4699 gcc_cv_ld_eh_frame_hdr=yes
4705 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4706 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4707 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4708 [Define if your linker supports .eh_frame_hdr.])
4710 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4712 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4713 gcc_cv_ld_eh_frame_ciev3=no
4714 if test $in_tree_ld = yes ; then
4715 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4716 && test $in_tree_ld_is_elf = yes; then
4717 gcc_cv_ld_eh_frame_ciev3=yes
4719 elif test x$gcc_cv_ld != x; then
4720 if echo "$ld_ver" | grep GNU > /dev/null; then
4721 gcc_cv_ld_eh_frame_ciev3=yes
4722 if test 0"$ld_date" -lt 20040513; then
4723 if test -n "$ld_date"; then
4724 # If there was date string, but was earlier than 2004-05-13, fail
4725 gcc_cv_ld_eh_frame_ciev3=no
4726 elif test "$ld_vers_major" -lt 2; then
4727 gcc_cv_ld_eh_frame_ciev3=no
4728 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4729 gcc_cv_ld_eh_frame_ciev3=no
4735 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4736 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4737 gcc_cv_ld_eh_frame_ciev3=yes
4743 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4744 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4745 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4746 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4748 AC_MSG_CHECKING(linker position independent executable support)
4750 if test $in_tree_ld = yes ; then
4751 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4752 && test $in_tree_ld_is_elf = yes; then
4755 elif test x$gcc_cv_ld != x; then
4756 # Check if linker supports -pie option
4757 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4761 if test x"$gcc_cv_ld_pie" = xyes; then
4762 AC_DEFINE(HAVE_LD_PIE, 1,
4763 [Define if your linker supports -pie option.])
4765 AC_MSG_RESULT($gcc_cv_ld_pie)
4767 AC_MSG_CHECKING(linker PIE support with copy reloc)
4768 gcc_cv_ld_pie_copyreloc=no
4769 if test $gcc_cv_ld_pie = yes ; then
4770 if test $in_tree_ld = yes ; then
4771 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4772 gcc_cv_ld_pie_copyreloc=yes
4774 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4775 # Check if linker supports -pie option with copy reloc
4777 i?86-*-linux* | x86_64-*-linux*)
4778 cat > conftest1.s <<EOF
4781 .type a_glob, @object
4786 cat > conftest2.s <<EOF
4789 .type main, @function
4791 movl %eax, a_glob(%rip)
4794 .section .data.rel,"aw",@progbits
4799 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4800 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4801 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4802 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4803 gcc_cv_ld_pie_copyreloc=yes
4805 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4810 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4811 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4812 [Define 0/1 if your linker supports -pie option with copy reloc.])
4813 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4815 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4816 gcc_cv_ld_eh_gc_sections=no
4817 if test $in_tree_ld = yes ; then
4818 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4819 && test $in_tree_ld_is_elf = yes; then
4820 gcc_cv_ld_eh_gc_sections=yes
4822 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4823 cat > conftest.s <<EOF
4826 .type _start, @function
4829 .size _start, .-_start
4830 .section .text.foo,"ax",@progbits
4831 .type foo, @function
4835 .section .gcc_except_table.foo,"a",@progbits
4838 .section .eh_frame,"a",@progbits
4841 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4842 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4843 | grep "gc-sections option ignored" > /dev/null; then
4844 gcc_cv_ld_eh_gc_sections=no
4845 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4846 | grep gcc_except_table > /dev/null; then
4847 gcc_cv_ld_eh_gc_sections=yes
4848 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4849 if test x$gcc_cv_as_comdat_group != xyes; then
4850 gcc_cv_ld_eh_gc_sections=no
4851 cat > conftest.s <<EOF
4854 .type _start, @function
4857 .size _start, .-_start
4858 .section .gnu.linkonce.t.foo,"ax",@progbits
4859 .type foo, @function
4863 .section .gcc_except_table.foo,"a",@progbits
4866 .section .eh_frame,"a",@progbits
4869 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4870 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4871 | grep "gc-sections option ignored" > /dev/null; then
4872 gcc_cv_ld_eh_gc_sections=no
4873 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4874 | grep gcc_except_table > /dev/null; then
4875 gcc_cv_ld_eh_gc_sections=yes
4881 rm -f conftest.s conftest.o conftest
4885 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4886 gcc_cv_ld_eh_gc_sections=no
4889 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4890 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4891 [Define if your linker supports garbage collection of
4892 sections in presence of EH frames.])
4894 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4896 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4897 gcc_cv_ld_eh_gc_sections_bug=no
4898 if test $in_tree_ld = yes ; then
4899 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4900 && test $in_tree_ld_is_elf = yes; then
4901 gcc_cv_ld_eh_gc_sections_bug=yes
4903 elif test x$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
4904 gcc_cv_ld_eh_gc_sections_bug=yes
4905 cat > conftest.s <<EOF
4908 .type _start, @function
4911 .size _start, .-_start
4912 .section .text.startup.foo,"ax",@progbits
4913 .type foo, @function
4917 .section .gcc_except_table.foo,"a",@progbits
4920 .section .eh_frame,"a",@progbits
4923 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4924 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4925 | grep "gc-sections option ignored" > /dev/null; then
4927 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4928 | grep gcc_except_table > /dev/null; then
4929 gcc_cv_ld_eh_gc_sections_bug=no
4932 rm -f conftest.s conftest.o conftest
4934 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4935 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4936 [Define if your linker has buggy garbage collection of
4937 sections support when .text.startup.foo like sections are used.])
4939 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4941 AC_MSG_CHECKING(linker for compressed debug sections)
4942 # gold/gld support compressed debug sections since binutils 2.19/2.21
4943 if test $in_tree_ld = yes ; then
4944 gcc_cv_ld_compress_debug=0
4945 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
4946 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
4947 gcc_cv_ld_compress_debug=2
4948 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4949 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
4950 && test $in_tree_ld_is_elf = yes; then
4951 gcc_cv_ld_compress_debug=1
4953 elif echo "$ld_ver" | grep GNU > /dev/null; then
4954 gcc_cv_ld_compress_debug=1
4955 if test 0"$ld_date" -lt 20050308; then
4956 if test -n "$ld_date"; then
4957 # If there was date string, but was earlier than 2005-03-08, fail
4958 gcc_cv_ld_compress_debug=0
4959 elif test "$ld_vers_major" -lt 2; then
4960 gcc_cv_ld_compress_debug=0
4961 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
4962 gcc_cv_ld_compress_debug=0
4965 if test $ld_is_gold = yes; then
4966 gcc_cv_ld_compress_debug=2
4967 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
4973 # Introduced in Solaris 11.2.
4974 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
4975 gcc_cv_ld_compress_debug=3
4976 gcc_cv_ld_compress_debug_option="-z compress-sections"
4978 gcc_cv_ld_compress_debug=0
4982 # Assume linkers other than GNU ld don't support compessed debug
4984 gcc_cv_ld_compress_debug=0
4989 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
4990 [Define to the level of your linker's compressed debug section support.])
4991 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
4992 [Define to the linker option to enable compressed debug sections.])
4993 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
4999 AC_CACHE_CHECK(linker --as-needed support,
5000 gcc_cv_ld_as_needed,
5001 [gcc_cv_ld_as_needed=no
5002 gcc_cv_ld_as_needed_option='--as-needed'
5003 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5004 if test $in_tree_ld = yes ; then
5005 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5006 && test $in_tree_ld_is_elf = yes; then
5007 gcc_cv_ld_as_needed=yes
5009 elif test x$gcc_cv_ld != x; then
5010 # Check if linker supports --as-needed and --no-as-needed options
5011 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5012 gcc_cv_ld_as_needed=yes
5015 # Solaris 2 ld always supports -z ignore/-z record.
5017 gcc_cv_ld_as_needed=yes
5018 gcc_cv_ld_as_needed_option="-z ignore"
5019 gcc_cv_ld_no_as_needed_option="-z record"
5024 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5025 # dl_iterate_phdr, i.e. since Solaris 11.
5027 *-*-solaris2.1[[1-9]]*)
5029 i?86-*-* | x86_64-*-*)
5030 if echo "$ld_ver" | grep GNU > /dev/null; then
5031 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5032 gcc_cv_ld_as_needed=no
5038 gcc_cv_ld_as_needed=no
5042 if test x"$gcc_cv_ld_as_needed" = xyes; then
5043 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5044 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5045 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5046 [Define to the linker option to ignore unused dependencies.])
5047 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5048 [Define to the linker option to keep unused dependencies.])
5051 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5052 saved_LDFLAGS="$LDFLAGS"
5053 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5054 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5055 AC_LINK_IFELSE([int main(void) {return 0;}],
5056 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5058 LDFLAGS="$saved_LDFLAGS"
5059 if test "x$gcc_cv_ld_clearcap" = xyes; then
5060 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5061 [Define if the linker supports clearing hardware capabilities via mapfile.])
5062 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5064 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5066 case "$target:$tm_file" in
5067 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5070 emul_name="-melf64lppc"
5073 emul_name="-melf64ppc"
5076 emul_name="-melf64ppc_fbsd"
5079 AC_CACHE_CHECK(linker support for omitting dot symbols,
5080 gcc_cv_ld_no_dot_syms,
5081 [gcc_cv_ld_no_dot_syms=no
5082 if test x"$ld_is_gold" = xyes; then
5083 gcc_cv_ld_no_dot_syms=yes
5084 elif test $in_tree_ld = yes ; then
5085 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5086 gcc_cv_ld_no_dot_syms=yes
5088 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5089 cat > conftest1.s <<EOF
5093 cat > conftest2.s <<EOF
5094 .section ".opd","aw"
5099 .quad .LEfoo,.TOC.@tocbase,0
5105 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5106 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5107 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5108 gcc_cv_ld_no_dot_syms=yes
5110 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5113 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5114 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5115 [Define if your PowerPC64 linker only needs function descriptor syms.])
5118 AC_CACHE_CHECK(linker large toc support,
5119 gcc_cv_ld_large_toc,
5120 [gcc_cv_ld_large_toc=no
5121 if test x"$ld_is_gold" = xyes; then
5122 gcc_cv_ld_large_toc=yes
5123 elif test $in_tree_ld = yes ; then
5124 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5125 gcc_cv_ld_large_toc=yes
5127 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5128 cat > conftest.s <<EOF
5129 .section ".tbss","awT",@nobits
5135 addis 9,13,ie0@got@tprel@ha
5136 ld 9,ie0@got@tprel@l(9)
5138 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5139 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5140 gcc_cv_ld_large_toc=yes
5142 rm -f conftest conftest.o conftest.s
5145 if test x"$gcc_cv_ld_large_toc" = xyes; then
5146 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5147 [Define if your PowerPC64 linker supports a large TOC.])
5150 AC_CACHE_CHECK(linker toc pointer alignment,
5151 gcc_cv_ld_toc_align,
5152 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5153 cat > conftest.s <<EOF
5158 .section .data.rel.ro,"aw",@progbits
5163 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5164 && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
5165 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5167 rm -f conftest conftest.o conftest.s
5170 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5171 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5172 [Define to .TOC. alignment forced by your linker.])
5179 AC_CACHE_CHECK(linker large toc support,
5180 gcc_cv_ld_large_toc,
5181 [gcc_cv_ld_large_toc=no
5182 if test x$gcc_cv_as != x ; then
5183 cat > conftest.s <<EOF
5193 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5194 gcc_cv_ld_large_toc=yes
5196 rm -f conftest conftest.o conftest.s
5199 if test x"$gcc_cv_ld_large_toc" = xyes; then
5200 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5201 [Define if your PowerPC64 linker supports a large TOC.])
5206 AC_CACHE_CHECK(linker --build-id support,
5208 [gcc_cv_ld_buildid=no
5209 if test $in_tree_ld = yes ; then
5210 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5211 "$gcc_cv_gld_minor_version" -ge 18 -o \
5212 "$gcc_cv_gld_major_version" -gt 2 \
5213 && test $in_tree_ld_is_elf = yes; then
5214 gcc_cv_ld_buildid=yes
5216 elif test x$gcc_cv_ld != x; then
5217 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5218 gcc_cv_ld_buildid=yes
5221 if test x"$gcc_cv_ld_buildid" = xyes; then
5222 AC_DEFINE(HAVE_LD_BUILDID, 1,
5223 [Define if your linker supports --build-id.])
5226 AC_ARG_ENABLE(linker-build-id,
5227 [AS_HELP_STRING([--enable-linker-build-id],
5228 [compiler will always pass --build-id to linker])],
5230 enable_linker_build_id=no)
5232 if test x"$enable_linker_build_id" = xyes; then
5233 if test x"$gcc_cv_ld_buildid" = xyes; then
5234 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5235 [Define if gcc should always pass --build-id to linker.])
5237 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5241 # In binutils 2.21, GNU ld gained support for new emulations fully
5242 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5243 AC_CACHE_CHECK(linker *_sol2 emulation support,
5244 gcc_cv_ld_sol2_emulation,
5245 [gcc_cv_ld_sol2_emulation=no
5246 if test $in_tree_ld = yes ; then
5247 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5248 "$gcc_cv_gld_minor_version" -ge 21 -o \
5249 "$gcc_cv_gld_major_version" -gt 2 \
5250 && test $in_tree_ld_is_elf = yes; then
5251 gcc_cv_ld_sol2_emulation=yes
5253 elif test x$gcc_cv_ld != x; then
5254 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5255 grep _sol2 > /dev/null; then
5256 gcc_cv_ld_sol2_emulation=yes
5259 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5260 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5261 [Define if your linker supports the *_sol2 emulations.])
5264 AC_CACHE_CHECK(linker --sysroot support,
5266 [gcc_cv_ld_sysroot=no
5267 if test $in_tree_ld = yes ; then
5268 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5269 gcc_cv_ld_sysroot=yes
5271 elif test x$gcc_cv_ld != x; then
5272 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5273 gcc_cv_ld_sysroot=yes
5276 if test x"$gcc_cv_ld_sysroot" = xyes; then
5277 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5278 [Define if your linker supports --sysroot.])
5281 # Test for stack protector support in target C library.
5282 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5283 gcc_cv_libc_provides_ssp,
5284 [gcc_cv_libc_provides_ssp=no
5287 # All versions of musl provide stack protector
5288 gcc_cv_libc_provides_ssp=yes;;
5289 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5290 # glibc 2.4 and later provides __stack_chk_fail and
5291 # either __stack_chk_guard, or TLS access to stack guard canary.
5292 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5293 [if test -f $target_header_dir/features.h \
5294 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5295 $target_header_dir/features.h > /dev/null; then
5296 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5297 $target_header_dir/features.h > /dev/null && \
5298 test -f $target_header_dir/bits/uClibc_config.h && \
5299 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5300 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5301 gcc_cv_libc_provides_ssp=yes
5303 # all versions of Bionic support stack protector
5304 elif test -f $target_header_dir/sys/cdefs.h \
5305 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5306 $target_header_dir/sys/cdefs.h > /dev/null; then
5307 gcc_cv_libc_provides_ssp=yes
5311 # Avoid complicated tests (see
5312 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5313 # simply assert that glibc does provide this, which is true for all
5314 # realistically usable GNU/Hurd configurations.
5315 # All supported versions of musl provide it as well
5316 gcc_cv_libc_provides_ssp=yes;;
5317 *-*-darwin* | *-*-freebsd*)
5318 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5319 [echo "no __stack_chk_fail on this target"])
5321 *) gcc_cv_libc_provides_ssp=no ;;
5324 if test x$gcc_cv_libc_provides_ssp = xyes; then
5325 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5326 [Define if your target C library provides stack protector support])
5329 # Test for <sys/sdt.h> on the target.
5330 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5331 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5333 if test -f $target_header_dir/sys/sdt.h; then
5335 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5336 [Define if your target C library provides sys/sdt.h])
5338 AC_MSG_RESULT($have_sys_sdt_h)
5340 # Check if TFmode long double should be used by default or not.
5341 # Some glibc targets used DFmode long double, but with glibc 2.4
5342 # and later they can use TFmode.
5344 powerpc*-*-linux* | \
5348 AC_ARG_WITH(long-double-128,
5349 [AS_HELP_STRING([--with-long-double-128],
5350 [use 128-bit long double by default])],
5351 gcc_cv_target_ldbl128="$with_long_double_128",
5352 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5353 [gcc_cv_target_ldbl128=no
5354 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5355 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5356 && gcc_cv_target_ldbl128=yes
5360 if test x$gcc_cv_target_ldbl128 = xyes; then
5361 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5362 [Define if TFmode long double should be the default])
5365 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5366 gcc_cv_target_dl_iterate_phdr=unknown
5368 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5369 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5370 # libdl there, both complicating its use and breaking compatibility
5371 # between Solaris 10 updates.
5372 *-*-solaris2.1[[1-9]]*)
5373 # <link.h> needs both a dl_iterate_phdr declaration and support for
5374 # compilation with largefile support.
5375 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5376 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5377 gcc_cv_target_dl_iterate_phdr=yes
5379 gcc_cv_target_dl_iterate_phdr=no
5382 *-*-dragonfly* | *-*-freebsd*)
5383 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5384 gcc_cv_target_dl_iterate_phdr=yes
5386 gcc_cv_target_dl_iterate_phdr=no
5390 gcc_cv_target_dl_iterate_phdr=yes
5393 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5394 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5395 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5396 [Define if your target C library provides the `dl_iterate_phdr' function.])
5398 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5400 # We no longer support different GC mechanisms. Emit an error if
5401 # the user configures with --with-gc.
5403 [AS_HELP_STRING([--with-gc={page,zone}],
5404 [this option is not supported anymore. It used to choose
5405 the garbage collection mechanism to use with the compiler])],
5406 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5409 # Libraries to use on the host. This will normally be set by the top
5410 # level Makefile. Here we simply capture the value for our Makefile.
5411 if test -z "${HOST_LIBS+set}"; then
5416 # Use the system's zlib library.
5419 dnl Very limited version of automake's enable-maintainer-mode
5421 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5422 dnl maintainer-mode is disabled by default
5423 AC_ARG_ENABLE(maintainer-mode,
5424 [AS_HELP_STRING([--enable-maintainer-mode],
5425 [enable make rules and dependencies not useful
5426 (and sometimes confusing) to the casual installer])],
5427 maintainer_mode=$enableval,
5430 AC_MSG_RESULT($maintainer_mode)
5432 if test "$maintainer_mode" = "yes"; then
5439 dnl Whether to prevent multiple front-ends from linking at the same time
5441 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5442 AC_ARG_ENABLE(link-mutex,
5443 [AS_HELP_STRING([--enable-link-mutex],
5444 [avoid linking multiple front-ends at once to avoid thrashing
5445 on the build machine])],
5446 do_link_mutex=$enableval,
5448 AC_MSG_RESULT($do_link_mutex)
5450 if test "$do_link_mutex" = "yes"; then
5455 AC_SUBST(DO_LINK_MUTEX)
5461 # Make empty files to contain the specs and options for each language.
5462 # Then add #include lines to for a compiler that has specs and/or options.
5468 # These (without "all_") are set in each config-lang.in.
5469 # `language' must be a single word so is spelled singularly.
5472 all_outputs='Makefile'
5473 # List of language makefile fragments.
5475 # Additional files for gengtype
5476 all_gtfiles="$target_gtfiles"
5478 # These are the languages that are set in --enable-languages,
5479 # and are available in the GCC tree.
5480 all_selected_languages=
5482 # Add the language fragments.
5483 # Languages are added via two mechanisms. Some information must be
5484 # recorded in makefile variables, these are defined in config-lang.in.
5485 # We accumulate them and plug them into the main Makefile.
5486 # The other mechanism is a set of hooks for each of the main targets
5487 # like `clean', `install', etc.
5489 language_hooks="Make-hooks"
5491 for lang in ${srcdir}/*/config-lang.in
5494 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5496 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5497 if test "x$lang_alias" = x
5499 echo "$lang doesn't set \$language." 1>&2
5502 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5503 subdirs="$subdirs $subdir"
5505 # $gcc_subdir is where the gcc integration files are to be found
5506 # for a language, both for internal compiler purposes (compiler
5507 # sources implementing front-end to GCC tree converters), and for
5508 # build infrastructure purposes (Make-lang.in, etc.)
5510 # This will be <subdir> (relative to $srcdir) if a line like
5511 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5512 # is found in <langdir>/config-lang.in, and will remain <langdir>
5515 # Except for the language alias (fetched above), the regular
5516 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5517 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5518 # only this and the language alias.
5520 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5521 if [ "$gcc_subdir" = "" ]; then
5522 gcc_subdir="$subdir"
5525 case ",$enable_languages," in
5527 all_selected_languages="$all_selected_languages $lang_alias"
5528 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5529 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5541 . ${srcdir}/$gcc_subdir/config-lang.in
5542 if test "x$language" = x
5544 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5549 case ",$enable_languages," in
5552 for i in $subdir_requires; do
5553 test -f "${srcdir}/$i/config-lang.in" && continue
5561 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5562 if test -f $srcdir/$gcc_subdir/lang.opt; then
5563 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5564 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5566 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5567 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5569 all_languages="$all_languages $language"
5570 all_compilers="$all_compilers $compilers"
5571 all_outputs="$all_outputs $outputs"
5572 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5573 case ",$enable_languages," in
5575 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5577 AC_SUBST(enable_lto)
5584 for language in $all_selected_languages
5586 check_languages="$check_languages check-$language"
5589 # We link each language in with a set of hooks, reached indirectly via
5590 # lang.${target}. Only do so for selected languages.
5594 target_list="all.cross start.encap rest.encap tags \
5595 install-common install-man install-info install-pdf install-html dvi \
5596 pdf html uninstall info man srcextra srcman srcinfo \
5597 mostlyclean clean distclean maintainer-clean install-plugin"
5599 for t in $target_list
5602 for lang in $all_selected_languages
5606 echo "lang.$t: $x" >> Make-hooks
5610 # Option include files
5613 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5614 option_includes="option-includes.mk"
5615 AC_SUBST_FILE(option_includes)
5623 echo "dir ." > .gdbinit
5624 echo "dir ${srcdir}" >> .gdbinit
5625 if test x$gdb_needs_out_file_path = xyes
5627 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5629 if test "x$subdirs" != x; then
5632 echo "dir ${srcdir}/$s" >> .gdbinit
5635 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5636 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5638 # Put a breakpoint on __asan_report_error to help with debugging buffer
5641 *-fsanitize=address*)
5642 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5646 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5647 AC_SUBST(gcc_tooldir)
5650 # Find a directory in which to install a shared libgcc.
5652 AC_ARG_ENABLE(version-specific-runtime-libs,
5653 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5654 [specify that runtime libraries should be
5655 installed in a compiler-specific directory])])
5657 # Substitute configuration variables
5660 AC_SUBST(all_compilers)
5661 AC_SUBST(all_gtfiles)
5662 AC_SUBST(all_lang_makefrags)
5663 AC_SUBST(all_languages)
5664 AC_SUBST(all_selected_languages)
5665 AC_SUBST(build_exeext)
5666 AC_SUBST(build_install_headers_dir)
5667 AC_SUBST(build_xm_file_list)
5668 AC_SUBST(build_xm_include_list)
5669 AC_SUBST(build_xm_defines)
5670 AC_SUBST(build_file_translate)
5671 AC_SUBST(check_languages)
5672 AC_SUBST(cpp_install_dir)
5673 AC_SUBST(xmake_file)
5674 AC_SUBST(tmake_file)
5675 AC_SUBST(TM_ENDIAN_CONFIG)
5676 AC_SUBST(TM_MULTILIB_CONFIG)
5677 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5678 AC_SUBST(extra_gcc_objs)
5679 AC_SUBST(user_headers_inc_next_pre)
5680 AC_SUBST(user_headers_inc_next_post)
5681 AC_SUBST(extra_headers_list)
5682 AC_SUBST(extra_objs)
5683 AC_SUBST(extra_programs)
5684 AC_SUBST(float_h_file)
5685 AC_SUBST(gcc_config_arguments)
5686 AC_SUBST(gcc_gxx_include_dir)
5687 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5688 AC_SUBST(host_exeext)
5689 AC_SUBST(host_xm_file_list)
5690 AC_SUBST(host_xm_include_list)
5691 AC_SUBST(host_xm_defines)
5692 AC_SUBST(out_host_hook_obj)
5694 AC_SUBST(lang_opt_files)
5695 AC_SUBST(lang_specs_files)
5696 AC_SUBST(lang_tree_files)
5697 AC_SUBST(local_prefix)
5699 AC_SUBST(objc_boehm_gc)
5701 AC_SUBST(out_object_file)
5702 AC_SUBST(common_out_file)
5703 AC_SUBST(common_out_object_file)
5704 AC_SUBST(tm_file_list)
5705 AC_SUBST(tm_include_list)
5706 AC_SUBST(tm_defines)
5707 AC_SUBST(tm_p_file_list)
5708 AC_SUBST(tm_p_include_list)
5709 AC_SUBST(xm_file_list)
5710 AC_SUBST(xm_include_list)
5711 AC_SUBST(xm_defines)
5712 AC_SUBST(use_gcc_stdint)
5713 AC_SUBST(c_target_objs)
5714 AC_SUBST(cxx_target_objs)
5715 AC_SUBST(fortran_target_objs)
5716 AC_SUBST(target_cpu_default)
5718 AC_SUBST_FILE(language_hooks)
5721 if test x${build} = x${host} ; then
5722 if test x${host} = x${target} ; then
5723 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5725 echo "Links are now set up to build a cross-compiler" 1>&2
5726 echo " from ${host} to ${target}." 1>&2
5729 if test x${host} = x${target} ; then
5730 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5731 echo " for ${target}." 1>&2
5733 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5734 echo " from ${host} to ${target}." 1>&2
5738 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5739 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5741 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5742 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5743 if test "x${ISLLIBS}" != "x" ; then
5744 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5747 # Check whether isl_schedule_constraints_compute_schedule is available;
5748 # it's new in ISL-0.13.
5749 # Check whether isl_options_set_schedule_serialize_sccs is available;
5750 # it's new in ISL-0.15.
5751 if test "x${ISLLIBS}" != "x" ; then
5752 saved_CXXFLAGS="$CXXFLAGS"
5753 CXXFLAGS="$CXXFLAGS $ISLINC"
5755 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5757 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5758 AC_TRY_LINK([#include <isl/schedule.h>],
5759 [isl_schedule_constraints_compute_schedule (NULL);],
5760 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5761 [ac_has_isl_schedule_constraints_compute_schedule=no])
5762 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5764 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5765 AC_TRY_LINK([#include <isl/schedule.h>],
5766 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5767 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5768 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5769 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5772 CXXFLAGS="$saved_CXXFLAGS"
5774 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5775 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5776 [Define if isl_schedule_constraints_compute_schedule exists.])
5779 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5780 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5781 [Define if isl_options_set_schedule_serialize_sccs exists.])
5786 AC_SUBST(pluginlibs)
5787 AC_SUBST(enable_plugin)
5788 if test x"$enable_plugin" = x"yes"; then
5789 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5793 # Enable --enable-host-shared
5794 AC_ARG_ENABLE(host-shared,
5795 [AS_HELP_STRING([--enable-host-shared],
5796 [build host code as shared libraries])],
5797 [PICFLAG=-fPIC], [PICFLAG=])
5798 AC_SUBST(enable_host_shared)
5802 AC_ARG_ENABLE(libquadmath-support,
5803 [AS_HELP_STRING([--disable-libquadmath-support],
5804 [disable libquadmath support for Fortran])],
5805 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5806 ENABLE_LIBQUADMATH_SUPPORT=yes)
5807 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5808 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5809 [Define to 1 to enable libquadmath support])
5813 # Specify what hash style to use by default.
5814 AC_ARG_WITH([linker-hash-style],
5815 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5816 [specify the linker hash style])],
5817 [case x"$withval" in
5819 LINKER_HASH_STYLE=sysv
5822 LINKER_HASH_STYLE=gnu
5825 LINKER_HASH_STYLE=both
5828 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5831 [LINKER_HASH_STYLE=''])
5832 if test x"${LINKER_HASH_STYLE}" != x; then
5833 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5834 [The linker hash style])
5837 # Specify what should be the default of -fdiagnostics-color option.
5838 AC_ARG_WITH([diagnostics-color],
5839 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5840 [specify the default of -fdiagnostics-color option
5841 auto-if-env stands for -fdiagnostics-color=auto if
5842 GCC_COLOR environment variable is present and
5843 -fdiagnostics-color=never otherwise])],
5844 [case x"$withval" in
5846 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
5849 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
5852 DIAGNOSTICS_COLOR_DEFAULT=-1
5855 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
5858 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
5861 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
5862 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
5863 [The default for -fdiagnostics-color option])
5865 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
5866 # of jit/jit-playback.c.
5867 cat > gcc-driver-name.h <<EOF
5868 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
5871 # Check whether --enable-default-pie was given.
5872 AC_ARG_ENABLE(default-pie,
5873 [AS_HELP_STRING([--enable-default-pie],
5874 [enable Position Independent Executable as default])],
5875 enable_default_pie=$enableval,
5876 enable_default_pie=no)
5877 if test x$enable_default_pie == xyes ; then
5878 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
5879 [Define if your target supports default PIE and it is enabled.])
5881 AC_SUBST([enable_default_pie])
5883 # Check if -fno-PIE works.
5884 AC_CACHE_CHECK([for -fno-PIE option],
5886 [saved_CXXFLAGS="$CXXFLAGS"
5887 CXXFLAGS="$CXXFLAGS -fno-PIE"
5888 AC_COMPILE_IFELSE([int main(void) {return 0;}],
5889 [gcc_cv_c_no_fpie=yes],
5890 [gcc_cv_c_no_fpie=no])
5891 CXXFLAGS="$saved_CXXFLAGS"])
5892 if test "$gcc_cv_c_no_fpie" = "yes"; then
5893 NO_PIE_CFLAGS="-fno-PIE"
5895 AC_SUBST([NO_PIE_CFLAGS])
5897 # Check if -no-pie works.
5898 AC_CACHE_CHECK([for -no-pie option],
5900 [saved_LDFLAGS="$LDFLAGS"
5901 LDFLAGS="$LDFLAGS -no-pie"
5902 AC_LINK_IFELSE([int main(void) {return 0;}],
5903 [gcc_cv_no_pie=yes],
5905 LDFLAGS="$saved_LDFLAGS"])
5906 if test "$gcc_cv_no_pie" = "yes"; then
5907 NO_PIE_FLAG="-no-pie"
5909 AC_SUBST([NO_PIE_FLAG])
5911 # Check linker supports '-z bndplt'
5912 ld_bndplt_support=no
5913 AC_MSG_CHECKING(linker -z bndplt option)
5914 if test x"$ld_is_gold" = xno; then
5915 if test $in_tree_ld = yes ; then
5916 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5917 ld_bndplt_support=yes
5919 elif test x$gcc_cv_ld != x; then
5920 # Check if linker supports -a bndplt option
5921 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
5922 ld_bndplt_support=yes
5926 if test x"$ld_bndplt_support" = xyes; then
5927 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
5928 [Define if your linker supports -z bndplt])
5930 AC_MSG_RESULT($ld_bndplt_support)
5932 # Configure the subdirectories
5933 # AC_CONFIG_SUBDIRS($subdirs)
5935 # Create the Makefile
5936 # and configure language subdirectories
5937 AC_CONFIG_FILES($all_outputs)
5939 AC_CONFIG_COMMANDS([default],
5941 case ${CONFIG_HEADERS} in
5942 *auto-host.h:config.in*)
5945 # Make sure all the subdirs exist.
5946 for d in $subdirs doc build common c-family
5948 test -d $d || mkdir $d
5951 [subdirs='$subdirs'])