2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2018 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 $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
209 if test x${gcc_gxx_include_dir} = x; then
210 if test x${enable_version_specific_runtime_libs} = xyes; then
211 gcc_gxx_include_dir='${libsubdir}/include/c++'
213 libstdcxx_incdir='include/c++/$(version)'
214 if test x$host != x$target; then
215 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
217 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
221 gcc_gxx_include_dir_add_sysroot=0
222 if test "${with_sysroot+set}" = set; then
223 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
224 if test "${gcc_gxx_without_sysroot}"; then
225 if test x${with_sysroot} != x/; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 AC_ARG_WITH(cpp_install_dir,
233 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
234 [install the user visible C preprocessor in DIR
235 (relative to PREFIX) as well as PREFIX/bin])],
236 [if test x$withval = xyes; then
237 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
238 elif test x$withval != xno; then
239 cpp_install_dir=$withval
242 # We would like to our source tree to be readonly. However when releases or
243 # pre-releases are generated, the flex/bison generated files as well as the
244 # various formats of manuals need to be included along with the rest of the
245 # sources. Therefore we have --enable-generated-files-in-srcdir to do
248 AC_MSG_CHECKING([whether to place generated files in the source directory])
249 dnl generated-files-in-srcdir is disabled by default
250 AC_ARG_ENABLE(generated-files-in-srcdir,
251 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
252 [put copies of generated files in source dir
253 intended for creating source tarballs for users
254 without texinfo bison or flex])],
255 generated_files_in_srcdir=$enableval,
256 generated_files_in_srcdir=no)
258 AC_MSG_RESULT($generated_files_in_srcdir)
260 if test "$generated_files_in_srcdir" = "yes"; then
267 # -------------------
268 # Find default linker
269 # -------------------
273 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
274 gnu_ld_flag="$with_gnu_ld",
278 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
282 # With pre-defined ld
284 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
285 DEFAULT_LINKER="$with_ld")
286 if test x"${DEFAULT_LINKER+set}" = x"set"; then
287 if test ! -x "$DEFAULT_LINKER"; then
288 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
289 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
291 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
294 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
295 [Define to enable the use of a default linker.])
298 AC_MSG_CHECKING([whether a default linker was specified])
299 if test x"${DEFAULT_LINKER+set}" = x"set"; then
300 if test x"$gnu_ld_flag" = x"no"; then
301 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
303 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
309 # With demangler in GNU ld
310 AC_ARG_WITH(demangler-in-ld,
311 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
312 demangler_in_ld="$with_demangler_in_ld",
315 # ----------------------
316 # Find default assembler
317 # ----------------------
321 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
322 gas_flag="$with_gnu_as",
326 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
327 DEFAULT_ASSEMBLER="$with_as")
328 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
329 if test ! -x "$DEFAULT_ASSEMBLER"; then
330 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
331 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
334 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
335 [Define to enable the use of a default assembler.])
338 AC_MSG_CHECKING([whether a default assembler was specified])
339 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
340 if test x"$gas_flag" = x"no"; then
341 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
343 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
353 # If a non-executable a.out is present (e.g. created by GNU as above even if
354 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
355 # file, even when creating an executable, so an execution test fails.
356 # Remove possible default executable files to avoid this.
358 # FIXME: This really belongs into AC_PROG_CC and can be removed once
359 # Autoconf includes it.
360 rm -f a.out a.exe b.out
362 # Find the native compiler
365 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
367 # Do configure tests with the C++ compiler, since that's what we build with.
370 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
371 # optimizations to be activated explicitly by the toplevel.
374 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
375 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
380 # Determine PICFLAG for target gnatlib.
381 GCC_PICFLAG_FOR_TARGET
382 AC_SUBST(PICFLAG_FOR_TARGET)
384 # -------------------------
385 # Check C compiler features
386 # -------------------------
388 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual $wf_opt])), [loose_warn])
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # Enable __cxa_atexit for C++.
815 AC_ARG_ENABLE(__cxa_atexit,
816 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
819 # Enable C extension for decimal float if target supports it.
820 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
822 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
824 [Define to 1 to enable decimal float extension to C.])
826 # Use default_decimal_float for dependency.
827 enable_decimal_float=$default_decimal_float
829 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
831 [Define to 1 to specify that we are using the BID decimal floating
832 point format instead of DPD])
834 # Enable C extension for fixed-point arithmetic.
835 AC_ARG_ENABLE(fixed-point,
836 [AS_HELP_STRING([--enable-fixed-point],
837 [enable fixed-point arithmetic extension to C])],
842 enable_fixed_point=yes
846 enable_fixed_point=yes
849 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
850 enable_fixed_point=no
854 AC_SUBST(enable_fixed_point)
856 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
857 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
858 [Define to 1 to enable fixed-point arithmetic extension to C.])
861 # Pass with no value to take the default
862 # Pass with a value to specify a thread package
863 AC_ARG_ENABLE(threads,
864 [AS_HELP_STRING([[--enable-threads[=LIB]]],
865 [enable thread usage for target GCC,
866 using LIB thread package])],,
870 [AS_HELP_STRING([--enable-tls],
871 [enable or disable generation of tls code
872 overriding the assembler check for tls support])],
876 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
877 Valid choices are 'yes' and 'no'.]) ;;
881 AC_ARG_ENABLE(vtable-verify,
882 [AS_HELP_STRING([--enable-vtable-verify],
883 [enable vtable verification feature])],,
884 [enable_vtable_verify=no])
885 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
886 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
887 [Define 0/1 if vtable verification feature is enabled.])
889 AC_ARG_ENABLE(objc-gc,
890 [AS_HELP_STRING([--enable-objc-gc],
891 [enable the use of Boehm's garbage collector with
892 the GNU Objective-C runtime])],
893 if test x$enable_objc_gc = xno; then
901 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
902 dwarf2="$with_dwarf2",
905 AC_ARG_ENABLE(shared,
906 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
908 case $enable_shared in
912 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
913 for pkg in $enableval; do
914 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
921 ], [enable_shared=yes])
922 AC_SUBST(enable_shared)
925 [AS_HELP_STRING([--with-specs=SPECS],
926 [add SPECS to driver command-line processing])],
927 [CONFIGURE_SPECS=$withval],
930 AC_SUBST(CONFIGURE_SPECS)
932 ACX_PKGVERSION([GCC])
933 ACX_BUGURL([https://gcc.gnu.org/bugs/])
935 # Sanity check enable_languages in case someone does not run the toplevel
936 # configure # script.
937 AC_ARG_ENABLE(languages,
938 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
939 [case ,${enable_languages}, in
941 # go safe -- we cannot be much sure without the toplevel
943 # analysis of which target libs are present and usable
947 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
952 enable_languages=c,${enable_languages}
955 [enable_languages=c])
957 if test x"$enable_as_accelerator_for" != x; then
958 AC_DEFINE(ACCEL_COMPILER, 1,
959 [Define if this compiler should be built as the offload target compiler.])
960 enable_as_accelerator=yes
963 # In this case we expect offload compiler to be built as native, so we
964 # need to rename the driver to avoid clashes with host's drivers.
965 program_transform_name="s&^&${target}-&" ;;
967 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
968 program_transform_name=`echo $program_transform_name | sed $sedscript`
969 accel_dir_suffix=/accel/${target_noncanonical}
970 real_target_noncanonical=${enable_as_accelerator_for}
972 AC_SUBST(enable_as_accelerator)
973 AC_SUBST(real_target_noncanonical)
974 AC_SUBST(accel_dir_suffix)
976 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
977 tgt=`echo $tgt | sed 's/=.*//'`
979 if echo "$tgt" | grep "^hsa" > /dev/null ; then
985 if test x"$offload_targets" = x; then
988 offload_targets="$offload_targets,$tgt"
991 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
992 [Define to offload targets, separated by commas.])
993 if test x"$enable_offloading" != x; then
994 AC_DEFINE(ENABLE_OFFLOADING, 1,
995 [Define this to enable support for offloading.])
997 AC_DEFINE(ENABLE_OFFLOADING, 0,
998 [Define this to enable support for offloading.])
1001 if test x"$enable_hsa" = x1 ; then
1002 AC_DEFINE(ENABLE_HSA, 1,
1003 [Define this to enable support for generating HSAIL.])
1006 AC_ARG_WITH(multilib-list,
1007 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1009 with_multilib_list=default)
1011 # -------------------------
1012 # Checks for other programs
1013 # -------------------------
1017 # Find some useful tools
1019 # We need awk to create options.c and options.h.
1020 # Bail out if it's missing.
1022 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1029 AC_SUBST(ranlib_flags)
1033 # See if cmp has --ignore-initial.
1034 gcc_AC_PROG_CMP_IGNORE_INITIAL
1036 # See if we have the mktemp command.
1037 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1039 # See if makeinfo has been installed and is modern enough
1040 # that we can use it.
1041 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1042 [GNU texinfo.* \([0-9][0-9.]*\)],
1043 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1044 if test $gcc_cv_prog_makeinfo_modern = no; then
1046 *** Makeinfo is missing or too old.
1047 *** Info documentation will not be built.])
1052 AC_SUBST(BUILD_INFO)
1054 # Is pod2man recent enough to regenerate manpages?
1055 AC_MSG_CHECKING([for recent Pod::Man])
1056 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1058 GENERATED_MANPAGES=generated-manpages
1063 AC_SUBST(GENERATED_MANPAGES)
1065 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1068 dnl Don't use AC_PROG_LEX; we insist on flex.
1069 dnl LEXLIB is not useful in gcc.
1070 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1073 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1075 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1076 # check for build == host before using them.
1079 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1080 && test -d ../binutils ; then
1081 NM='${objdir}/../binutils/nm-new'
1083 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1087 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1088 && test -d ../binutils ; then
1089 AR='${objdir}/../binutils/ar'
1091 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1094 # The jit documentation looks better if built with sphinx, but can be
1095 # built with texinfo if sphinx is not available.
1096 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1097 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1099 # --------------------
1100 # Checks for C headers
1101 # --------------------
1103 # Need to reject headers which give warnings, so that the -Werror bootstrap
1104 # works later. *sigh* This needs to come before all header checks.
1111 AC_HEADER_TIOCGWINSZ
1112 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1113 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1114 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1115 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1117 # Check for thread headers.
1118 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1119 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1121 # These tests can't be done till we know if we have limits.h.
1125 # ----------------------
1126 # Checks for C++ headers
1127 # ----------------------
1129 dnl Autoconf will give an error in the configure script if there is no
1130 dnl C++ preprocessor. Hack to prevent that.
1131 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1133 m4_popdef([AC_MSG_ERROR])[]dnl
1135 AC_CHECK_HEADERS(unordered_map)
1136 AC_CHECK_HEADERS(tr1/unordered_map)
1137 AC_CHECK_HEADERS(ext/hash_map)
1140 # Dependency checking.
1144 AC_CONFIG_COMMANDS([gccdepdir],[
1145 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1146 for lang in $subdirs c-family common
1148 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1149 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1151 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1158 # These libraries may be used by collect2.
1159 # We may need a special search path to get them linked.
1160 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1162 for libs in '' -lld -lmld \
1163 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1164 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1167 AC_TRY_LINK_FUNC(ldopen,
1168 [gcc_cv_collect2_libs="$libs"; break])
1171 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1172 case $gcc_cv_collect2_libs in
1174 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1176 AC_SUBST(COLLECT2_LIBS)
1178 # When building Ada code on Alpha, we need exc_resume which is usually in
1179 # -lexc. So test for it.
1182 AC_SEARCH_LIBS(exc_resume, exc)
1185 AC_SUBST(GNAT_LIBEXC)
1187 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1190 AC_SEARCH_LIBS(kstat_open, kstat)
1191 EXTRA_GCC_LIBS="$LIBS"
1193 AC_SUBST(EXTRA_GCC_LIBS)
1195 # Some systems put ldexp and frexp in libm instead of libc; assume
1196 # they're both in the same place. jcf-dump needs them.
1199 AC_SEARCH_LIBS(ldexp, m)
1204 # Use <inttypes.h> only if it exists,
1205 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1207 AC_MSG_CHECKING(for inttypes.h)
1208 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1209 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1210 [[#define __STDC_FORMAT_MACROS
1211 #include <sys/types.h>
1212 #include <inttypes.h>]],
1217 [gcc_cv_header_inttypes_h=yes],
1218 [gcc_cv_header_inttypes_h=no])])
1219 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1220 if test $gcc_cv_header_inttypes_h = yes; then
1221 AC_DEFINE(HAVE_INTTYPES_H, 1,
1222 [Define if you have a working <inttypes.h> header file.])
1225 dnl Disabled until we have a complete test for buggy enum bitfields.
1226 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1228 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1229 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1230 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1231 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1232 putchar_unlocked putc_unlocked)
1233 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1234 popen sysconf strsignal getrusage nl_langinfo \
1235 gettimeofday mbstowcs wcswidth mmap setlocale \
1236 gcc_UNLOCKED_FUNCS madvise)
1238 if test x$ac_cv_func_mbstowcs = xyes; then
1239 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1240 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1246 [gcc_cv_func_mbstowcs_works=yes],
1247 [gcc_cv_func_mbstowcs_works=no],
1248 [gcc_cv_func_mbstowcs_works=yes])])
1249 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1250 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1251 [Define this macro if mbstowcs does not crash when its
1252 first argument is NULL.])
1256 AC_CHECK_TYPE(ssize_t, int)
1257 AC_CHECK_TYPE(caddr_t, char *)
1259 GCC_AC_FUNC_MMAP_BLACKLIST
1263 # Under VMS, vfork works very differently than on Unix. The standard test
1264 # won't work, and it isn't easily adaptable. It makes more sense to
1266 ac_cv_func_vfork_works=yes
1273 # Until we have in-tree GNU iconv:
1275 if test -f "$LTLIBICONV"; then
1276 LIBICONV_DEP=$LTLIBICONV
1278 AC_SUBST(LIBICONV_DEP)
1284 # We will need to find libiberty.h and ansidecl.h
1285 saved_CFLAGS="$CFLAGS"
1286 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1287 saved_CXXFLAGS="$CXXFLAGS"
1288 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1290 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1291 # normal autoconf function for these. But force definition of
1292 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1293 # basename handling in libiberty.h.
1294 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1295 #undef HAVE_DECL_BASENAME
1296 #define HAVE_DECL_BASENAME 1
1297 #include "ansidecl.h"
1298 #include "system.h"])
1300 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1301 madvise stpcpy strnlen strsignal strverscmp \
1302 strtol strtoul strtoll strtoull setenv unsetenv \
1303 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1304 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1305 #include "ansidecl.h"
1306 #include "system.h"])
1308 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1309 #include "ansidecl.h"
1311 #ifdef HAVE_SYS_RESOURCE_H
1312 #include <sys/resource.h>
1316 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1317 #include "ansidecl.h"
1319 #ifdef HAVE_SYS_RESOURCE_H
1320 #include <sys/resource.h>
1322 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1323 [Define to `long' if <sys/resource.h> doesn't define.])])
1325 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1326 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1327 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1328 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1329 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1330 #include "ansidecl.h"
1339 gcc_AC_CHECK_DECLS(times, , ,[
1340 #include "ansidecl.h"
1342 #ifdef HAVE_SYS_TIMES_H
1343 #include <sys/times.h>
1347 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1348 #include "ansidecl.h"
1353 # More time-related stuff.
1354 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1356 #include "ansidecl.h"
1358 #ifdef HAVE_SYS_TIMES_H
1359 #include <sys/times.h>
1361 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1362 if test $ac_cv_struct_tms = yes; then
1363 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1364 [Define if <sys/times.h> defines struct tms.])
1367 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1368 # revisit after autoconf 2.50.
1369 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1370 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1371 #include "ansidecl.h"
1373 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1374 if test $gcc_cv_type_clock_t = yes; then
1375 AC_DEFINE(HAVE_CLOCK_T, 1,
1376 [Define if <time.h> defines clock_t.])
1379 # Check if F_SETLKW is supported by fcntl.
1380 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1381 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1382 #include <fcntl.h>]], [[
1388 return fcntl (1, F_SETLKW, &fl);]])],
1389 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1390 if test $ac_cv_f_setlkw = yes; then
1391 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1392 [Define if F_SETLKW supported by fcntl.])
1395 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1396 CFLAGS="$saved_CFLAGS"
1397 CXXFLAGS="$saved_CXXFLAGS"
1399 # mkdir takes a single argument on some systems.
1400 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1408 # With Setjmp/Longjmp based exception handling.
1409 AC_ARG_ENABLE(sjlj-exceptions,
1410 [AS_HELP_STRING([--enable-sjlj-exceptions],
1411 [arrange to use setjmp/longjmp exception handling])],
1414 if test $enableval != yes; then
1415 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1420 force_sjlj_exceptions=yes],
1423 force_sjlj_exceptions=yes
1427 force_sjlj_exceptions=yes
1431 force_sjlj_exceptions=no
1434 if test $force_sjlj_exceptions = yes; then
1435 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1436 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1437 [Define 0/1 to force the choice for exception handling model.])
1440 # --------------------------------------------------------
1441 # Build, host, and target specific configuration fragments
1442 # --------------------------------------------------------
1444 # Collect build-machine-specific information.
1445 . ${srcdir}/config.build || exit 1
1447 # Collect host-machine-specific information.
1448 . ${srcdir}/config.host || exit 1
1452 # Collect target-machine-specific information.
1453 . ${srcdir}/config.gcc || exit 1
1455 extra_objs="${host_extra_objs} ${extra_objs}"
1456 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1458 # Default the target-machine variables that were not explicitly set.
1459 if test x"$tm_file" = x
1460 then tm_file=$cpu_type/$cpu_type.h; fi
1462 if test x"$extra_headers" = x
1463 then extra_headers=; fi
1465 if test x$md_file = x
1466 then md_file=$cpu_type/$cpu_type.md; fi
1468 if test x$out_file = x
1469 then out_file=$cpu_type/$cpu_type.c; fi
1471 if test x"$tmake_file" = x
1472 then tmake_file=$cpu_type/t-$cpu_type
1475 # Support --enable-initfini-array.
1476 if test x$enable_initfini_array != xno; then
1477 tm_file="${tm_file} initfini-array.h"
1480 if test x"$dwarf2" = xyes
1481 then tm_file="$tm_file tm-dwarf2.h"
1484 # Say what files are being used for the output code and MD file.
1485 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1486 echo "Using \`$srcdir/config/$md_file' as machine description file."
1488 # If any of the xm_file variables contain nonexistent files, warn
1489 # about them and drop them.
1492 for x in $build_xm_file; do
1493 if test -f $srcdir/config/$x
1495 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1501 for x in $host_xm_file; do
1502 if test -f $srcdir/config/$x
1504 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1510 for x in $xm_file; do
1511 if test -f $srcdir/config/$x
1513 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1519 for f in $tm_file; do
1522 if test $count = ax; then
1523 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1525 echo "Using the following target machine macro files:"
1526 for f in $tm_file; do
1527 echo " $srcdir/config/$f"
1531 if test x$use_long_long_for_widest_fast_int = xyes; then
1532 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1533 [Define to 1 if the 'long long' type is wider than 'long' but still
1534 efficiently supported by the host hardware.])
1537 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1538 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1540 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1541 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1544 for f in $host_xm_file; do
1547 if test $count = a; then
1549 elif test $count = ax; then
1550 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1552 echo "Using the following host machine macro files:"
1553 for f in $host_xm_file; do
1554 echo " $srcdir/config/$f"
1557 echo "Using ${out_host_hook_obj} for host machine hooks."
1559 if test "$host_xm_file" != "$build_xm_file"; then
1561 for f in $build_xm_file; do
1564 if test $count = a; then
1566 elif test $count = ax; then
1567 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1569 echo "Using the following build machine macro files:"
1570 for f in $build_xm_file; do
1571 echo " $srcdir/config/$f"
1576 if test -n "$configured_native_system_header_dir"; then
1577 native_system_header_dir=$configured_native_system_header_dir
1579 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1580 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1584 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1585 gcc_cv_mcontext_underscores,
1587 #include <sys/cdefs.h>
1588 #include <sys/signal.h>
1589 #include <ucontext.h>
1590 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1592 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1593 if test $gcc_cv_mcontext_underscores = yes; then
1594 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1595 [mcontext_t fields start with __])
1604 # Check if a valid thread package
1605 case ${enable_threads} in
1608 target_thread_file='single'
1612 target_thread_file='single'
1614 aix | dce | lynx | mipssde | posix | rtems | \
1615 single | tpf | vxworks | win32)
1616 target_thread_file=${enable_threads}
1619 echo "${enable_threads} is an unknown thread package" 1>&2
1624 if test x${thread_file} = x; then
1625 # No thread file set by target-specific clauses in config.gcc,
1626 # so use file chosen by default logic above
1627 thread_file=${target_thread_file}
1635 if test x$enable___cxa_atexit = xyes || \
1636 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1637 if test x$host = x$target; then
1639 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1640 # keyed to flag_use_cxa_atexit
1648 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1649 [echo "__cxa_atexit can't be enabled on this target"])
1653 # We can't check for __cxa_atexit when building a cross, so assume
1657 if test x$use_cxa_atexit = xyes; then
1658 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1659 [Define if you want to use __cxa_atexit, rather than atexit, to
1660 register C++ destructors for local statics and global objects.
1661 This is essential for fully standards-compliant handling of
1662 destructors, but requires __cxa_atexit in libc.])
1666 # Look for a file containing extra machine modes.
1667 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1668 extra_modes_file='$(srcdir)'/config/${extra_modes}
1669 AC_SUBST(extra_modes_file)
1670 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1671 [Define to the name of a file containing a list of extra machine modes
1672 for this architecture.])
1675 # Convert extra_options into a form suitable for Makefile use.
1678 for f in $extra_options; do
1679 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1680 all_opt_files="$all_opt_files $srcdir/config/$f"
1682 AC_SUBST(extra_opt_files)
1684 # auto-host.h is the file containing items generated by autoconf and is
1685 # the first file included by config.h.
1686 # If host=build, it is correct to have bconfig include auto-host.h
1687 # as well. If host!=build, we are in error and need to do more
1688 # work to find out the build config parameters.
1689 if test x$host = x$build
1691 build_auto=auto-host.h
1693 # We create a subdir, then run autoconf in the subdir.
1694 # To prevent recursion we set host and build for the new
1695 # invocation of configure to the build for this invocation
1702 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1703 *) realsrcdir=../${srcdir};;
1705 # Clearing GMPINC is necessary to prevent host headers being
1706 # used by the build compiler. Defining GENERATOR_FILE stops
1707 # system.h from including gmp.h.
1708 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1709 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1710 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1711 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1712 ${realsrcdir}/configure \
1713 --enable-languages=${enable_languages-all} \
1714 --target=$target_alias --host=$build_alias --build=$build_alias
1716 # We just finished tests for the build machine, so rename
1717 # the file auto-build.h in the gcc directory.
1718 mv auto-host.h ../auto-build.h
1721 build_auto=auto-build.h
1723 AC_SUBST(build_subdir)
1725 tm_file="${tm_file} defaults.h"
1726 tm_p_file="${tm_p_file} tm-preds.h"
1727 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1728 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1729 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1730 # put this back in temporarily.
1731 xm_file="auto-host.h ansidecl.h ${xm_file}"
1738 # Compile in configure arguments.
1739 if test -f configargs.h ; then
1740 # Being re-configured.
1741 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1742 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1744 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1747 # Double all backslashes and backslash all quotes to turn
1748 # gcc_config_arguments into a C string.
1749 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1750 $gcc_config_arguments
1752 gcc_config_arguments_str=`cat conftest.out`
1755 cat > configargs.h <<EOF
1756 /* Generated automatically. */
1757 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1758 static const char thread_model[] = "$thread_file";
1760 static const struct {
1761 const char *name, *value;
1762 } configure_default_options[] = $configure_default_options;
1767 gcc_BASEVER=`cat $srcdir/BASE-VER`
1768 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1769 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1770 if test -f $srcdir/REVISION ; then
1771 gcc_REVISION=`cat $srcdir/REVISION`
1775 cat > plugin-version.h <<EOF
1776 #include "configargs.h"
1778 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1779 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1780 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1781 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1783 static char basever[] = "$gcc_BASEVER";
1784 static char datestamp[] = "$gcc_DATESTAMP";
1785 static char devphase[] = "$gcc_DEVPHASE";
1786 static char revision[] = "$gcc_REVISION";
1788 /* FIXME plugins: We should make the version information more precise.
1789 One way to do is to add a checksum. */
1791 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1793 configuration_arguments};
1797 # Determine what GCC version number to use in filesystem paths.
1800 # Internationalization
1801 ZW_GNU_GETTEXT_SISTER_DIR
1803 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1804 # -liconv on the link line twice.
1805 case "$LIBINTL" in *$LIBICONV*)
1809 AC_ARG_ENABLE(secureplt,
1810 [AS_HELP_STRING([--enable-secureplt],
1811 [enable -msecure-plt by default for PowerPC])],
1814 AC_ARG_ENABLE(mingw-wildcard,
1815 [AS_HELP_STRING([--enable-mingw-wildcard],
1816 [Set whether to expand wildcard on command-line.
1817 Default to platform configuration])],
1818 [],[enable_mingw_wildcard=platform])
1819 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1820 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1821 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1822 [Value to set mingw's _dowildcard to.])])
1824 AC_ARG_ENABLE(leading-mingw64-underscores,
1825 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1826 [enable leading underscores on 64 bit mingw targets]),
1828 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1829 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1830 [Define if we should use leading underscore on 64 bit mingw targets])])
1833 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1836 AC_ARG_ENABLE(frame-pointer,
1837 [AS_HELP_STRING([--enable-frame-pointer],
1838 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1841 linux* | darwin[[8912]]*)
1842 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1844 enable_frame_pointer=no
1847 enable_frame_pointer=yes
1852 # Windows32 Registry support for specifying GCC installation paths.
1853 AC_ARG_ENABLE(win32-registry,
1854 [AS_HELP_STRING([--disable-win32-registry],
1855 [disable lookup of installation paths in the
1856 Registry on Windows hosts])
1857 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1858 AS_HELP_STRING([--enable-win32-registry=KEY],
1859 [use KEY instead of GCC version as the last portion
1860 of the registry key])],,)
1863 win32 | pe | cygwin* | mingw32*)
1864 if test "x$enable_win32_registry" != xno; then
1865 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1868 if test "x$enable_win32_registry" != xno; then
1869 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1870 [Define to 1 if installation paths should be looked up in the Windows
1871 Registry. Ignored on non-Windows hosts.])
1873 if test "x$enable_win32_registry" != xyes \
1874 && test "x$enable_win32_registry" != x; then
1875 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1876 [Define to be the last component of the Windows registry key under which
1877 to look for installation paths. The full key used will be
1878 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1879 The default is the GCC version number.])
1885 # Get an absolute path to the GCC top-level source directory
1886 holddir=`${PWDCMD-pwd}`
1888 topdir=`${PWDCMD-pwd}`
1891 # Conditionalize the makefile for this host machine.
1893 for f in ${host_xmake_file}
1895 if test -f ${srcdir}/config/$f
1897 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1901 # Conditionalize the makefile for this target machine.
1903 for f in ${tmake_file}
1905 if test -f ${srcdir}/config/$f
1907 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1910 tmake_file="${tmake_file_}"
1912 out_object_file=`basename $out_file .c`.o
1913 common_out_object_file=`basename $common_out_file .c`.o
1915 tm_file_list="options.h"
1916 tm_include_list="options.h insn-constants.h"
1917 for f in $tm_file; do
1920 f=`echo $f | sed 's/^..//'`
1921 tm_file_list="${tm_file_list} $f"
1922 tm_include_list="${tm_include_list} $f"
1925 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1926 tm_include_list="${tm_include_list} $f"
1929 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1930 tm_include_list="${tm_include_list} config/$f"
1937 for f in $tm_p_file; do
1940 tm_p_file_list="${tm_p_file_list} $f"
1941 tm_p_include_list="${tm_p_include_list} $f"
1944 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1945 tm_p_include_list="${tm_p_include_list} config/$f"
1951 for f in $xm_file; do
1954 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1955 xm_include_list="${xm_include_list} $f"
1958 xm_file_list="${xm_file_list} $f"
1959 xm_include_list="${xm_include_list} $f"
1962 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1963 xm_include_list="${xm_include_list} config/$f"
1969 host_xm_include_list=
1970 for f in $host_xm_file; do
1973 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1974 host_xm_include_list="${host_xm_include_list} $f"
1977 host_xm_file_list="${host_xm_file_list} $f"
1978 host_xm_include_list="${host_xm_include_list} $f"
1981 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1982 host_xm_include_list="${host_xm_include_list} config/$f"
1988 for f in $build_xm_file; do
1991 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1992 build_xm_include_list="${build_xm_include_list} $f"
1994 auto-build.h | auto-host.h )
1995 build_xm_file_list="${build_xm_file_list} $f"
1996 build_xm_include_list="${build_xm_include_list} $f"
1999 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2000 build_xm_include_list="${build_xm_include_list} config/$f"
2005 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2006 # cross-compiler which does not use the native headers and libraries.
2007 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2008 CROSS= AC_SUBST(CROSS)
2009 ALL=all.internal AC_SUBST(ALL)
2010 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2011 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2013 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2014 test x$build != x$host || test "x$with_build_sysroot" != x; then
2015 if test "x$with_build_sysroot" != x; then
2016 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2018 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2021 if test x$host != x$target
2023 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2025 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2026 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2027 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2030 if test "x$with_build_sysroot" != "x"; then
2031 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2032 elif test "x$with_sysroot" = x; then
2033 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2034 elif test "x$with_sysroot" = xyes; then
2035 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2037 target_header_dir="${with_sysroot}${native_system_header_dir}"
2040 target_header_dir=${native_system_header_dir}
2043 # If this is a cross-compiler that does not
2044 # have its own set of headers then define
2047 # If this is using newlib, without having the headers available now,
2048 # then define inhibit_libc in LIBGCC2_CFLAGS.
2049 # This prevents libgcc2 from containing any code which requires libc
2051 : ${inhibit_libc=false}
2052 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2053 test x$with_newlib = xyes ; } &&
2054 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2057 AC_SUBST(inhibit_libc)
2059 # When building gcc with a cross-compiler, we need to adjust things so
2060 # that the generator programs are still built with the native compiler.
2061 # Also, we cannot run fixincludes.
2063 # These are the normal (build=host) settings:
2064 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2065 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2066 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2067 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2068 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2069 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2071 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2072 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2074 # And these apply if build != host, or we are generating coverage data
2075 if test x$build != x$host || test "x$coverage_flags" != x
2077 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2078 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2079 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2081 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2082 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2083 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2084 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2086 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2087 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2089 # Expand extra_headers to include complete path.
2090 # This substitutes for lots of t-* files.
2092 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2093 for file in ${extra_headers} ; do
2094 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2097 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2098 if test x"$use_gcc_tgmath" = xyes
2099 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2102 # Define collect2 in Makefile.
2103 case $host_can_use_collect2 in
2105 *) collect2='collect2$(exeext)' ;;
2107 AC_SUBST([collect2])
2109 # Add a definition of USE_COLLECT2 if system wants one.
2110 case $use_collect2 in
2111 no) use_collect2= ;;
2114 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2115 xm_defines="${xm_defines} USE_COLLECT2"
2116 case $host_can_use_collect2 in
2118 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2124 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2125 [Define to the name of the LTO plugin DSO that must be
2126 passed to the linker's -plugin=LIB option.])
2128 # ---------------------------
2129 # Assembler & linker features
2130 # ---------------------------
2132 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2133 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2134 # However when ld-new is first executed from the build tree, libtool will
2135 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2136 # to the build tree. While doing this we need to use the previous-stage
2137 # linker, or we have an infinite loop. The presence of a shell script as
2138 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2139 # the gcc/collect-ld script. So we need to know how libtool works, or
2140 # exec-tool will fail.
2142 m4_defun([_LT_CONFIG_COMMANDS], [])
2145 AC_SUBST(enable_fast_install)
2147 # Identify the assembler which will work hand-in-glove with the newly
2148 # built GCC, so that we can examine its features. This is the assembler
2149 # which will be driven by the driver program.
2151 # If build != host, and we aren't building gas in-tree, we identify a
2152 # build->target assembler and hope that it will have the same features
2153 # as the host->target assembler we'll be using.
2154 gcc_cv_gas_major_version=
2155 gcc_cv_gas_minor_version=
2156 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2158 m4_pattern_allow([AS_FOR_TARGET])dnl
2159 AS_VAR_SET_IF(gcc_cv_as,, [
2160 if test -x "$DEFAULT_ASSEMBLER"; then
2161 gcc_cv_as="$DEFAULT_ASSEMBLER"
2162 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2163 && test -f ../gas/Makefile \
2164 && test x$build = x$host; then
2165 gcc_cv_as=../gas/as-new$build_exeext
2166 elif test -x as$build_exeext; then
2167 # Build using assembler in the current directory.
2168 gcc_cv_as=./as$build_exeext
2169 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2170 gcc_cv_as="$AS_FOR_TARGET"
2172 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2175 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2176 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2177 case "$ORIGINAL_AS_FOR_TARGET" in
2178 ./as | ./as$build_exeext) ;;
2179 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2182 AC_MSG_CHECKING(what assembler to use)
2183 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2184 # Single tree build which includes gas. We want to prefer it
2185 # over whatever linker top-level may have detected, since
2186 # we'll use what we're building after installation anyway.
2187 AC_MSG_RESULT(newly built gas)
2189 _gcc_COMPUTE_GAS_VERSION
2190 in_tree_gas_is_elf=no
2191 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2192 || (grep 'obj_format = multi' ../gas/Makefile \
2193 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2195 in_tree_gas_is_elf=yes
2198 AC_MSG_RESULT($gcc_cv_as)
2204 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2205 [case "${enableval}" in
2211 install_gold_as_default=no
2213 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2214 [case "${enableval}" in
2216 install_gold_as_default=yes
2219 if test x${default_ld} != x; then
2220 install_gold_as_default=yes
2226 AC_MSG_ERROR([invalid --enable-gold argument])
2230 # Identify the linker which will work hand-in-glove with the newly
2231 # built GCC, so that we can examine its features. This is the linker
2232 # which will be driven by the driver program.
2234 # If build != host, and we aren't building gas in-tree, we identify a
2235 # build->target linker and hope that it will have the same features
2236 # as the host->target linker we'll be using.
2237 gcc_cv_gld_major_version=
2238 gcc_cv_gld_minor_version=
2239 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2240 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2241 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2243 AS_VAR_SET_IF(gcc_cv_ld,, [
2244 if test -x "$DEFAULT_LINKER"; then
2245 gcc_cv_ld="$DEFAULT_LINKER"
2246 elif test $install_gold_as_default = yes \
2247 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2248 && test -f ../gold/Makefile \
2249 && test x$build = x$host; then
2250 gcc_cv_ld=../gold/ld-new$build_exeext
2251 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2252 && test -f ../ld/Makefile \
2253 && test x$build = x$host; then
2254 gcc_cv_ld=../ld/ld-new$build_exeext
2255 elif test -x collect-ld$build_exeext; then
2256 # Build using linker in the current directory.
2257 gcc_cv_ld=./collect-ld$build_exeext
2258 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2259 gcc_cv_ld="$LD_FOR_TARGET"
2261 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2264 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2265 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2266 # if the PLUGIN_LD is set ld-new, just have it as ld
2267 # as that is the installed named.
2268 if test x$PLUGIN_LD_SUFFIX = xld-new \
2269 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2272 AC_ARG_WITH(plugin-ld,
2273 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2274 [if test x"$withval" != x; then
2275 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2276 PLUGIN_LD_SUFFIX="$withval"
2278 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2279 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2281 # Check to see if we are using gold instead of ld
2282 AC_MSG_CHECKING(whether we are using gold)
2284 if test x$gcc_cv_ld != x; then
2285 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2286 | grep "GNU gold" > /dev/null; then
2290 AC_MSG_RESULT($ld_is_gold)
2292 AC_MSG_CHECKING(gold linker with split stack support as non default)
2293 # Check to see if default ld is not gold, but gold is
2294 # available and has support for split stack. If gcc was configured
2295 # with gold then no checking is done.
2297 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2299 # For platforms other than powerpc64*, enable as appropriate.
2302 ld_gold=`which ${gcc_cv_ld}.gold`
2303 # Make sure this gold has minimal split stack support
2304 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2305 ld_vers=`$ld_gold --version | sed 1q`
2306 gold_vers=`echo $ld_vers | sed -n \
2307 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2309 # check that the gold version contains the complete split stack support
2310 # on powerpc64 big and little endian
2312 case "$gold_vers" in
2313 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2315 *) gold_non_default=no
2321 if test $gold_non_default = yes; then
2322 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2323 [Define if the gold linker supports split stack and is available as a non-default])
2326 AC_MSG_RESULT($gold_non_default)
2328 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2329 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2330 case "$ORIGINAL_LD_FOR_TARGET" in
2331 ./collect-ld | ./collect-ld$build_exeext) ;;
2332 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2335 AC_MSG_CHECKING(what linker to use)
2336 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2337 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2338 # Single tree build which includes ld. We want to prefer it
2339 # over whatever linker top-level may have detected, since
2340 # we'll use what we're building after installation anyway.
2341 AC_MSG_RESULT(newly built ld)
2343 in_tree_ld_is_elf=no
2344 if (grep 'EMUL = .*elf' ../ld/Makefile \
2345 || grep 'EMUL = .*linux' ../ld/Makefile \
2346 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2347 in_tree_ld_is_elf=yes
2348 elif test "$ld_is_gold" = yes; then
2349 in_tree_ld_is_elf=yes
2351 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
2354 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2355 if test x$gcc_cv_gld_version != x; then
2359 case $gcc_cv_gld_version in
2362 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2365 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2366 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2368 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2369 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2371 AC_MSG_RESULT($gcc_cv_ld)
2373 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2374 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2375 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2378 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2379 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2381 # Figure out what nm we will be using.
2382 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2383 AS_VAR_SET_IF(gcc_cv_nm,, [
2384 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2385 && test -f ../binutils/Makefile \
2386 && test x$build = x$host; then
2387 gcc_cv_nm=../binutils/nm-new$build_exeext
2388 elif test -x nm$build_exeext; then
2389 gcc_cv_nm=./nm$build_exeext
2390 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2391 gcc_cv_nm="$NM_FOR_TARGET"
2393 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2396 AC_MSG_CHECKING(what nm to use)
2397 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2398 # Single tree build which includes binutils.
2399 AC_MSG_RESULT(newly built nm)
2402 AC_MSG_RESULT($gcc_cv_nm)
2406 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2407 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2408 case "$ORIGINAL_NM_FOR_TARGET" in
2409 ./nm | ./nm$build_exeext) ;;
2410 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2414 # Figure out what objdump we will be using.
2415 AS_VAR_SET_IF(gcc_cv_objdump,, [
2416 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2417 && test -f ../binutils/Makefile \
2418 && test x$build = x$host; then
2419 # Single tree build which includes binutils.
2420 gcc_cv_objdump=../binutils/objdump$build_exeext
2421 elif test -x objdump$build_exeext; then
2422 gcc_cv_objdump=./objdump$build_exeext
2423 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2424 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2426 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2429 AC_MSG_CHECKING(what objdump to use)
2430 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2431 # Single tree build which includes binutils.
2432 AC_MSG_RESULT(newly built objdump)
2433 elif test x$gcc_cv_objdump = x; then
2434 AC_MSG_RESULT(not found)
2436 AC_MSG_RESULT($gcc_cv_objdump)
2439 # Figure out what readelf we will be using.
2440 AS_VAR_SET_IF(gcc_cv_readelf,, [
2441 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2442 && test -f ../binutils/Makefile \
2443 && test x$build = x$host; then
2444 # Single tree build which includes binutils.
2445 gcc_cv_readelf=../binutils/readelf$build_exeext
2446 elif test -x readelf$build_exeext; then
2447 gcc_cv_readelf=./readelf$build_exeext
2448 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2449 gcc_cv_readelf="$READELF_FOR_TARGET"
2451 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2454 AC_MSG_CHECKING(what readelf to use)
2455 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2456 # Single tree build which includes binutils.
2457 AC_MSG_RESULT(newly built readelf)
2458 elif test x$gcc_cv_readelf = x; then
2459 AC_MSG_RESULT(not found)
2461 AC_MSG_RESULT($gcc_cv_readelf)
2464 # Figure out what assembler alignment features are present.
2465 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2469 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2470 [Define if your assembler supports .balign and .p2align.])])
2472 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2475 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2476 [Define if your assembler supports specifying the maximum number
2477 of bytes to skip when using the GAS .p2align command.])])
2479 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2482 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2483 [Define if your assembler supports .literal16.])])
2485 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2487 [conftest_label1: .word 0
2489 conftest_label2: .word 0
2491 [if test x$gcc_cv_nm != x; then
2492 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2493 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2494 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2496 else gcc_cv_as_subsection_m1=yes
2498 rm -f conftest.nm1 conftest.nm2
2500 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2501 [Define if your assembler supports .subsection and .subsection -1 starts
2502 emitting at the beginning of your section.])])
2504 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2507 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2509 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2511 [ .weakref foobar, barfnot],,
2512 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2514 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2517 .NSUBSPA $CODE$,COMDAT],,
2518 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2520 # .hidden needs to be supported in both the assembler and the linker,
2521 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2522 # This is irritatingly difficult to feature test for; we have to check the
2523 # date string after the version number. If we've got an in-tree
2524 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2526 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2529 conftest_s=' .globl foobar,hidden'
2532 conftest_s=' .hidden foobar
2536 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2537 [elf,2,13,0],, [$conftest_s])
2540 # Darwin as has some visibility support, though with a different syntax.
2541 gcc_cv_as_hidden=yes
2545 # gnu_indirect_function type is an extension proposed at
2546 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2547 # selection of function implementation
2548 AC_ARG_ENABLE(gnu-indirect-function,
2549 [AS_HELP_STRING([--enable-gnu-indirect-function],
2550 [enable the use of the @gnu_indirect_function to glibc systems])],
2551 [case $enable_gnu_indirect_function in
2553 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2554 Valid choices are 'yes' and 'no'.]) ;;
2556 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2558 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2559 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2560 [Define if your system supports gnu indirect functions.])
2564 if test $in_tree_ld != yes ; then
2565 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2566 if echo "$ld_ver" | grep GNU > /dev/null; then
2567 if test x"$ld_is_gold" = xyes; then
2568 # GNU gold --version looks like this:
2570 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2572 # We extract the binutils version which is more familiar and specific
2573 # than the gold version.
2574 ld_vers=`echo $ld_ver | sed -n \
2575 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2577 # GNU ld --version looks like this:
2579 # GNU ld (GNU Binutils) 2.21.51.20110225
2580 ld_vers=`echo $ld_ver | sed -n \
2581 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2583 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2584 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2585 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2586 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2590 # Solaris 2 ld -V output looks like this for a regular version:
2592 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2594 # but test versions add stuff at the end:
2596 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2598 # In Solaris 11.4, this was changed to
2600 # ld: Solaris ELF Utilities: 11.4-1.3123
2602 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2603 # numbers can be used in ld.so.1 feature checks even if a different
2604 # linker is configured.
2605 ld_ver=`$gcc_cv_ld -V 2>&1`
2606 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2607 ld_vers=`echo $ld_ver | sed -n \
2608 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2609 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2610 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2618 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2619 [[if test $in_tree_ld = yes ; then
2621 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2622 && test $in_tree_ld_is_elf = yes; then
2623 gcc_cv_ld_hidden=yes
2626 gcc_cv_ld_hidden=yes
2627 if test x"$ld_is_gold" = xyes; then
2629 elif echo "$ld_ver" | grep GNU > /dev/null; then
2631 mmix-knuth-mmixware)
2632 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2636 if test 0"$ld_date" -lt 20020404; then
2637 if test -n "$ld_date"; then
2638 # If there was date string, but was earlier than 2002-04-04, fail
2640 elif test -z "$ld_vers"; then
2641 # If there was no date string nor ld version number, something is wrong
2644 test -z "$ld_vers_patch" && ld_vers_patch=0
2645 if test "$ld_vers_major" -lt 2; then
2647 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2648 gcc_cv_ld_hidden="no"
2649 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2657 gcc_cv_ld_hidden=yes
2660 # Darwin ld has some visibility support.
2661 gcc_cv_ld_hidden=yes
2663 hppa64*-*-hpux* | ia64*-*-hpux*)
2664 gcc_cv_ld_hidden=yes
2666 *-*-solaris2.1[0-9]*)
2667 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2668 # .symbolic was only added in Solaris 9 12/02.
2669 gcc_cv_ld_hidden=yes
2677 libgcc_visibility=no
2678 AC_SUBST(libgcc_visibility)
2679 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2680 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2681 libgcc_visibility=yes
2682 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2683 [Define if your assembler and linker support .hidden.])
2686 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2687 gcc_cv_ld_ro_rw_mix=unknown
2688 if test $in_tree_ld = yes ; then
2689 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2690 && test $in_tree_ld_is_elf = yes; then
2691 gcc_cv_ld_ro_rw_mix=read-write
2693 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2694 echo '.section myfoosect, "a"' > conftest1.s
2695 echo '.section myfoosect, "aw"' > conftest2.s
2696 echo '.byte 1' >> conftest2.s
2697 echo '.section myfoosect, "a"' > conftest3.s
2698 echo '.byte 0' >> conftest3.s
2699 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2700 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2701 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2702 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2703 conftest2.o conftest3.o > /dev/null 2>&1; then
2704 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2705 | sed -e '/myfoosect/!d' -e N`
2706 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2707 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2708 gcc_cv_ld_ro_rw_mix=read-only
2710 gcc_cv_ld_ro_rw_mix=read-write
2715 rm -f conftest.* conftest[123].*
2718 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2719 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2720 [Define if your linker links a mix of read-only
2721 and read-write sections into a read-write section.])
2723 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2725 gcc_AC_INITFINI_ARRAY
2727 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2728 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2736 [[# GAS versions before 2.11 do not support uleb128,
2737 # despite appearing to.
2738 # ??? There exists an elf-specific test that will crash
2739 # the assembler. Perhaps it's better to figure out whether
2740 # arbitrary sections are supported and try the test.
2741 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2742 if echo "$as_ver" | grep GNU > /dev/null; then
2743 as_vers=`echo $as_ver | sed -n \
2744 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2745 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2746 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2747 if test $as_major -eq 2 && test $as_minor -lt 11
2749 else gcc_cv_as_leb128=yes
2752 [AC_DEFINE(HAVE_AS_LEB128, 1,
2753 [Define if your assembler supports .sleb128 and .uleb128.])],
2754 [AC_DEFINE(HAVE_AS_LEB128, 0,
2755 [Define if your assembler supports .sleb128 and .uleb128.])])
2757 # Check if we have assembler support for unwind directives.
2758 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2765 .cfi_escape 1, 2, 3, 4, 5
2769 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2770 # read-only and read-write sections, we need to make sure that the
2771 # assembler used emits read-write .eh_frame sections.
2772 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2773 if test "x$gcc_cv_objdump" != x; then
2774 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2775 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2776 gcc_cv_as_cfi_directive=no
2779 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2780 # On Solaris/x86, make sure that GCC and assembler agree on using
2781 # read-only .eh_frame sections for 64-bit.
2782 if test x$gas = xyes; then
2783 as_ix86_64_opt="--64"
2785 as_ix86_64_opt="-xarch=amd64"
2787 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2788 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2789 sed -e /.eh_frame/!d -e N | \
2790 grep READONLY > /dev/null; then
2791 gcc_cv_as_cfi_directive=yes
2793 gcc_cv_as_cfi_directive=no
2797 gcc_cv_as_cfi_directive=yes
2802 # no objdump, err on the side of caution
2803 gcc_cv_as_cfi_directive=no
2806 gcc_cv_as_cfi_directive=yes
2810 gcc_cv_as_cfi_directive=yes
2813 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2814 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2818 .cfi_adjust_cfa_offset 64
2820 .cfi_adjust_cfa_offset 128
2823 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2824 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2825 gcc_cv_as_cfi_advance_working=yes
2829 # no objdump, err on the side of caution
2830 gcc_cv_as_cfi_advance_working=no
2832 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2833 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2834 [`if test $gcc_cv_as_cfi_directive = yes \
2835 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2836 [Define 0/1 if your assembler supports CFI directives.])
2838 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2839 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2840 gcc_cv_as_cfi_personality_directive, ,,
2843 .cfi_personality 0, symbol
2845 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2846 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2847 then echo 1; else echo 0; fi`],
2848 [Define 0/1 if your assembler supports .cfi_personality.])
2850 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2851 gcc_cv_as_cfi_sections_directive, ,,
2853 .cfi_sections .debug_frame, .eh_frame
2857 win32 | pe | cygwin* | mingw32*)
2858 # Need to check that we generated the correct relocation for the
2859 # .debug_frame section. This was fixed for binutils 2.21.
2860 gcc_cv_as_cfi_sections_directive=no
2861 if test "x$gcc_cv_objdump" != x; then
2862 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2863 grep secrel > /dev/null; then
2864 gcc_cv_as_cfi_sections_directive=yes
2869 gcc_cv_as_cfi_sections_directive=yes
2872 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2873 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2874 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2875 then echo 1; else echo 0; fi`],
2876 [Define 0/1 if your assembler supports .cfi_sections.])
2878 # GAS versions up to and including 2.11.0 may mis-optimize
2880 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2888 .section .eh_frame,"aw",@progbits
2890 .4byte .LECIE1-.LSCIE1
2904 .4byte .LEFDE1-.LASFDE1
2906 .4byte .LASFDE1-__FRAME_BEGIN__
2914 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2915 cat > conftest.lit <<EOF
2916 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2917 0010 01000000 12000000 18000000 00000000 ................
2918 0020 08000000 04080000 0044 .........D @&t@
2920 cat > conftest.big <<EOF
2921 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2922 0010 00000001 00000012 00000018 00000000 ................
2923 0020 00000008 04000000 0844 .........D @&t@
2925 # If the assembler didn't choke, and we can objdump,
2926 # and we got the correct data, then succeed.
2927 # The text in the here-document typically retains its unix-style line
2928 # endings, while the output of objdump will use host line endings.
2929 # Therefore, use diff -b for the comparisons.
2930 if test x$gcc_cv_objdump != x \
2931 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2932 | tail -3 > conftest.got \
2933 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2934 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2936 gcc_cv_as_eh_frame=yes
2937 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2938 gcc_cv_as_eh_frame=buggy
2940 # Uh oh, what do we do now?
2941 gcc_cv_as_eh_frame=no
2944 if test $gcc_cv_as_eh_frame = buggy; then
2945 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2946 [Define if your assembler mis-optimizes .eh_frame data.])
2949 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2950 [elf,2,12,0], [--fatal-warnings],
2951 [.section .rodata.str, "aMS", @progbits, 1])
2952 if test $gcc_cv_as_shf_merge = no; then
2953 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2954 [elf,2,12,0], [--fatal-warnings],
2955 [.section .rodata.str, "aMS", %progbits, 1])
2957 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2958 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2959 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2961 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2962 [.stabs "gcc2_compiled.",60,0,0,0],,
2963 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2964 [Define if your assembler supports .stabs.])])
2966 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2967 gcc_cv_as_comdat_group,
2968 [elf,2,16,0], [--fatal-warnings],
2969 [.section .text,"axG",@progbits,.foo,comdat])
2970 if test $gcc_cv_as_comdat_group = yes; then
2971 gcc_cv_as_comdat_group_percent=no
2972 gcc_cv_as_comdat_group_group=no
2974 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2975 gcc_cv_as_comdat_group_percent,
2976 [elf,2,16,0], [--fatal-warnings],
2977 [.section .text,"axG",%progbits,.foo,comdat])
2978 if test $gcc_cv_as_comdat_group_percent = yes; then
2979 gcc_cv_as_comdat_group_group=no
2982 # Sun as uses a completely different syntax.
2987 .group foo,".text%foo",#comdat
2988 .section ".text%foo", #alloc,#execinstr,#progbits
2993 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2995 .group foo,.text%foo,#comdat
2996 .section .text%foo, "ax", @progbits
3002 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3003 gcc_cv_as_comdat_group_group,
3007 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3008 gcc_cv_as_comdat_group_group=no
3012 if test x"$ld_is_gold" = xyes; then
3014 elif test $in_tree_ld = yes ; then
3016 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3017 && test $in_tree_ld_is_elf = yes; then
3020 elif echo "$ld_ver" | grep GNU > /dev/null; then
3022 if test 0"$ld_date" -lt 20050308; then
3023 if test -n "$ld_date"; then
3024 # If there was date string, but was earlier than 2005-03-08, fail
3026 elif test "$ld_vers_major" -lt 2; then
3028 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3035 *-*-solaris2.1[1-9]*)
3037 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3038 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3041 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3042 # least ld version 1.2267.
3043 if test "$ld_vers_major" -gt 1; then
3045 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3047 elif test "$ld_vers_minor" -ge 2267; then
3052 # Assume linkers other than GNU ld don't support COMDAT group.
3058 # Allow overriding the automatic COMDAT group tests above.
3059 AC_ARG_ENABLE(comdat,
3060 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3061 [comdat_group="$enable_comdat"])
3062 if test $comdat_group = no; then
3063 gcc_cv_as_comdat_group=no
3064 gcc_cv_as_comdat_group_percent=no
3065 gcc_cv_as_comdat_group_group=no
3067 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3068 [`if test $gcc_cv_as_comdat_group = yes \
3069 || test $gcc_cv_as_comdat_group_percent = yes \
3070 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3071 [Define 0/1 if your assembler and linker support COMDAT groups.])
3073 # Restrict this test to Solaris/x86: other targets define this statically.
3075 i?86-*-solaris2* | x86_64-*-solaris2*)
3076 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3077 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3081 # Full support for hidden thunks in linkonce sections only appeared in
3082 # Solaris 11/OpenSolaris.
3083 *-*-solaris2.1[[1-9]]*)
3091 AC_MSG_RESULT($hidden_linkonce)
3092 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3093 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3094 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3098 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3099 gcc_cv_as_discriminator,
3103 .loc 1 1 0 discriminator 1],,
3104 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3105 [Define if your assembler supports the .loc discriminator sub-directive.])])
3107 # Thread-local storage - the check is heavily parameterized.
3116 .section ".tdata","awT",@progbits
3119 ldq $27,__tls_get_addr($29) !literal!1
3120 lda $16,foo($29) !tlsgd!1
3121 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3122 ldq $27,__tls_get_addr($29) !literal!2
3123 lda $16,foo($29) !tlsldm!2
3124 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3125 ldq $1,foo($29) !gotdtprel
3126 ldah $2,foo($29) !dtprelhi
3127 lda $3,foo($2) !dtprello
3128 lda $4,foo($29) !dtprel
3129 ldq $1,foo($29) !gottprel
3130 ldah $2,foo($29) !tprelhi
3131 lda $3,foo($2) !tprello
3132 lda $4,foo($29) !tprel'
3135 tls_as_opt=--fatal-warnings
3139 add_s r0,r0, @foo@tpoff'
3143 cris-*-*|crisv32-*-*)
3145 .section ".tdata","awT",@progbits
3152 tls_as_opt=--fatal-warnings
3156 .section ".tdata","awT",@progbits
3168 .section ".tdata","awT",@progbits
3172 addil LT%foo-$tls_gdidx$,gp
3173 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3176 addil LT%foo-$tls_ldidx$,gp
3178 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3179 addil LR%foo-$tls_dtpoff$,%ret0
3180 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3182 addil LT%foo-$tls_ieoff$,gp
3183 ldw RT%foo-$tls_ieoff$(%r1),%t2
3186 addil LR%foo-$tls_leoff$,%t1
3187 ldo RR%foo-$tls_leoff$(%r1),%t2'
3190 tls_as_opt=--fatal-warnings
3194 .section ".tdata","awT",%progbits
3205 i[34567]86-*-* | x86_64-*-*)
3207 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3214 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3216 .section .tdata,"awt",@progbits'
3221 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3222 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3226 .section ".tdata","awT",@progbits'
3230 tls_as_opt="--fatal-warnings"
3234 conftest_s="$conftest_s
3238 leal foo@tlsgd(,%ebx,1), %eax
3239 leal foo@tlsldm(%ebx), %eax
3240 leal foo@dtpoff(%eax), %edx
3241 movl foo@gottpoff(%ebx), %eax
3242 subl foo@gottpoff(%ebx), %eax
3243 addl foo@gotntpoff(%ebx), %eax
3244 movl foo@indntpoff, %eax
3245 movl \$foo@tpoff, %eax
3246 subl \$foo@tpoff, %eax
3247 leal foo@ntpoff(%ecx), %eax"
3250 if test x$on_solaris = xyes; then
3252 yes) tls_as_opt="$tls_as_opt --64" ;;
3253 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3256 conftest_s="$conftest_s
3260 leaq foo@tlsgd(%rip), %rdi
3261 leaq foo@tlsld(%rip), %rdi
3262 leaq foo@dtpoff(%rax), %rdx
3263 movq foo@gottpoff(%rip), %rax
3264 movq \$foo@tpoff, %rax"
3270 .section ".tdata","awT",@progbits
3273 addl r16 = @ltoff(@dtpmod(foo#)), gp
3274 addl r17 = @ltoff(@dtprel(foo#)), gp
3275 addl r18 = @ltoff(@tprel(foo#)), gp
3276 addl r19 = @dtprel(foo#), gp
3277 adds r21 = @dtprel(foo#), r13
3278 movl r23 = @dtprel(foo#)
3279 addl r20 = @tprel(foo#), gp
3280 adds r22 = @tprel(foo#), r13
3281 movl r24 = @tprel(foo#)'
3284 tls_as_opt=--fatal-warnings
3288 .section .tdata,"awT",@progbits
3292 addik r5,r20,x@TLSGD
3293 addik r5,r20,x@TLSLDM'
3296 tls_as_opt='--fatal-warnings'
3300 .section .tdata,"awT",@progbits
3304 addiu $4, $28, %tlsgd(x)
3305 addiu $4, $28, %tlsldm(x)
3306 lui $4, %dtprel_hi(x)
3307 addiu $4, $4, %dtprel_lo(x)
3308 lw $4, %gottprel(x)($28)
3309 lui $4, %tprel_hi(x)
3310 addiu $4, $4, %tprel_lo(x)'
3313 tls_as_opt='-32 --fatal-warnings'
3317 .section .tdata,"awT",@progbits
3322 move.l x@TLSGD(%a5),%a0
3323 move.l x@TLSLDM(%a5),%a0
3324 move.l x@TLSLDO(%a5),%a0
3325 move.l x@TLSIE(%a5),%a0
3326 move.l x@TLSLE(%a5),%a0'
3329 tls_as_opt='--fatal-warnings'
3333 .section ".tdata","awT",@progbits'
3336 tls_as_opt="--fatal-warnings"
3340 .section ".tdata","awT",%progbits
3344 add x0, x0, #:tlsgd_lo12:x
3349 tls_as_opt='--fatal-warnings'
3353 .extern __get_tpointer
3371 .section ".tdata","awT",@progbits
3379 addi 3,2,ld0@got@tlsgd
3385 addi 3,2,x1@got@tlsld
3391 addis 9,3,x2@dtprel@ha
3392 addi 9,9,x2@dtprel@l
3395 ld 9,x3@got@dtprel(2)
3401 tls_as_opt="-a64 --fatal-warnings"
3405 .section ".tdata","awT",@progbits
3413 addi 3,31,ld0@got@tlsgd
3415 addi 3,31,x1@got@tlsld
3418 addis 9,3,x2@dtprel@ha
3419 addi 9,9,x2@dtprel@l
3420 lwz 9,x3@got@tprel(31)
3423 addis 9,2,x2@tprel@ha
3424 addi 9,9,x2@tprel@l'
3427 tls_as_opt="-a32 --fatal-warnings"
3431 .section .tdata,"awT",@progbits
3435 call __tls_get_addr'
3438 tls_as_opt='--fatal-warnings'
3442 .section ".tdata","awT",@progbits
3451 l %r1,foo@GOTNTPOFF(%r12)
3452 l %r1,0(%r1):tls_load:foo
3453 bas %r14,0(%r1,%r13):tls_gdcall:foo
3454 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3457 tls_as_opt="-m31 --fatal-warnings"
3461 .section ".tdata","awT",@progbits
3469 lg %r1,foo@GOTNTPOFF(%r12)
3470 larl %r1,foo@INDNTPOFF
3471 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3472 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3475 tls_as_opt="-m64 -Aesame --fatal-warnings"
3477 sh-*-* | sh[123456789lbe]*-*-*)
3479 .section ".tdata","awT",@progbits
3489 tls_as_opt=--fatal-warnings
3493 sparc*-sun-solaris2.*)
3500 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3502 .section ".tdata",#alloc,#write,#tls'
3507 .section ".tdata","awT",@progbits'
3510 tls_as_opt="-32 --fatal-warnings"
3512 conftest_s="$conftest_s
3515 sethi %tgd_hi22(foo), %o0
3516 add %o0, %tgd_lo10(foo), %o1
3517 add %l7, %o1, %o0, %tgd_add(foo)
3518 call __tls_get_addr, %tgd_call(foo)
3519 sethi %tldm_hi22(foo), %l1
3520 add %l1, %tldm_lo10(foo), %l2
3521 add %l7, %l2, %o0, %tldm_add(foo)
3522 call __tls_get_addr, %tldm_call(foo)
3523 sethi %tldo_hix22(foo), %l3
3524 xor %l3, %tldo_lox10(foo), %l4
3525 add %o0, %l4, %l5, %tldo_add(foo)
3526 sethi %tie_hi22(foo), %o3
3527 add %o3, %tie_lo10(foo), %o3
3528 ld [%l7 + %o3], %o2, %tie_ld(foo)
3529 add %g7, %o2, %o4, %tie_add(foo)
3530 sethi %tle_hix22(foo), %l1
3531 xor %l1, %tle_lox10(foo), %o5
3532 ld [%g7 + %o5], %o1"
3536 .section ".tdata","awT",@progbits
3539 addli r0, zero, tls_gd(foo)
3540 auli r0, zero, tls_gd_ha16(foo)
3541 addli r0, r0, tls_gd_lo16(foo)
3543 addli r0, zero, tls_ie(foo)
3544 auli r0, r0, tls_ie_ha16(foo)
3545 addli r0, r0, tls_ie_lo16(foo)'
3548 tls_as_opt="--fatal-warnings"
3552 .section ".tdata","awT",@progbits
3555 shl16insli r0, zero, hw0_last_tls_gd(foo)
3556 shl16insli r0, zero, hw1_last_tls_gd(foo)
3557 shl16insli r0, r0, hw0_tls_gd(foo)
3559 shl16insli r0, zero, hw1_last_tls_ie(foo)
3560 shl16insli r0, r0, hw0_tls_ie(foo)'
3563 tls_as_opt="--fatal-warnings"
3567 .section ".tdata","awT",@progbits
3570 movi a8, foo@TLSFUNC
3571 movi a10, foo@TLSARG
3572 callx8.tls a8, foo@TLSCALL'
3579 if test "x$enable_tls" = xno ; then
3580 : # TLS explicitly disabled.
3581 elif test "x$enable_tls" = xyes ; then
3582 set_have_as_tls=yes # TLS explicitly enabled.
3583 elif test -z "$tls_first_major"; then
3584 : # If we don't have a check, assume no support.
3586 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3587 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3588 [set_have_as_tls=yes])
3590 if test $set_have_as_tls = yes ; then
3591 AC_DEFINE(HAVE_AS_TLS, 1,
3592 [Define if your assembler and linker support thread-local storage.])
3595 # Target-specific assembler checks.
3597 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3598 gcc_cv_ld_static_dynamic=no
3599 gcc_cv_ld_static_option='-Bstatic'
3600 gcc_cv_ld_dynamic_option='-Bdynamic'
3601 if test $in_tree_ld = yes ; then
3602 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3603 gcc_cv_ld_static_dynamic=yes
3605 elif test x$gcc_cv_ld != x; then
3606 # Check if linker supports -Bstatic/-Bdynamic option
3607 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3608 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3609 gcc_cv_ld_static_dynamic=yes
3612 # AIX ld uses -b flags
3613 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3614 gcc_cv_ld_static_dynamic=yes
3615 gcc_cv_ld_static_option="-bstatic"
3616 gcc_cv_ld_dynamic_option="-bdynamic"
3618 # HP-UX ld uses -a flags to select between shared and archive.
3620 if test x"$gnu_ld" = xno; then
3621 gcc_cv_ld_static_dynamic=yes
3622 gcc_cv_ld_static_option="-aarchive_shared"
3623 gcc_cv_ld_dynamic_option="-adefault"
3626 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3628 gcc_cv_ld_static_dynamic=yes
3633 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3634 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3635 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3636 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3637 [Define to the linker option to disable use of shared objects.])
3638 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3639 [Define to the linker option to enable use of shared objects.])
3641 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3643 if test x"$demangler_in_ld" = xyes; then
3644 AC_MSG_CHECKING(linker --demangle support)
3645 gcc_cv_ld_demangle=no
3646 if test $in_tree_ld = yes; then
3647 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3648 gcc_cv_ld_demangle=yes
3650 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3651 # Check if the GNU linker supports --demangle option
3652 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3653 gcc_cv_ld_demangle=yes
3656 if test x"$gcc_cv_ld_demangle" = xyes; then
3657 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3658 [Define if your linker supports --demangle option.])
3660 AC_MSG_RESULT($gcc_cv_ld_demangle)
3663 AC_MSG_CHECKING(linker plugin support)
3665 if test -f liblto_plugin.la; then
3666 save_ld_ver="$ld_ver"
3667 save_ld_vers_major="$ld_vers_major"
3668 save_ld_vers_minor="$ld_vers_minor"
3669 save_ld_is_gold="$ld_is_gold"
3673 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3675 # FIXME: ld_is_gold?
3676 ld_vers_major="$gcc_cv_gld_major_version"
3677 ld_vers_minor="$gcc_cv_gld_minor_version"
3679 # Determine plugin linker version.
3680 # FIXME: Partial duplicate from above, generalize.
3682 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3683 if echo "$ld_ver" | grep GNU > /dev/null; then
3684 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3686 ld_vers=`echo $ld_ver | sed -n \
3687 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3689 ld_vers=`echo $ld_ver | sed -n \
3690 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3692 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3693 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3698 # Determine plugin support.
3699 if echo "$ld_ver" | grep GNU > /dev/null; then
3700 # Require GNU ld or gold 2.21+ for plugin support by default.
3701 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3703 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3704 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3709 ld_ver="$save_ld_ver"
3710 ld_vers_major="$save_ld_vers_major"
3711 ld_vers_minor="$save_ld_vers_minor"
3712 ld_is_gold="$save_ld_is_gold"
3714 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3715 [Define to the level of your linker's plugin support.])
3716 AC_MSG_RESULT($gcc_cv_lto_plugin)
3718 # Target OS-specific assembler checks.
3720 case "$target_os" in
3722 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3723 gcc_cv_as_mmacosx_version_min,,
3724 [-mmacosx-version-min=10.1], [.text],,
3725 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3726 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3730 # Target CPU-specific assembler checks.
3734 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3735 [-mabi=lp64], [.text],,,)
3736 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3737 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3738 [Define if your assembler supports the -mabi option.])
3740 if test x$with_abi = xilp32; then
3741 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3742 Upgrade the Assembler.])
3744 if test x"$with_multilib_list" = xdefault; then
3745 TM_MULTILIB_CONFIG=lp64
3747 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3748 for aarch64_multilib in ${aarch64_multilibs}; do
3749 case ${aarch64_multilib} in
3751 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3752 Upgrade the Assembler.])
3760 # Check if we have binutils support for relocations types needed by -fpic
3761 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3764 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3765 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3766 [Define if your assembler supports relocs needed by -fpic.])])
3767 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3768 AC_ARG_ENABLE(fix-cortex-a53-835769,
3770 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3771 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3772 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3773 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3778 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3783 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3784 Valid choices are 'yes' and 'no'.])
3790 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3791 AC_ARG_ENABLE(fix-cortex-a53-843419,
3793 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3794 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3795 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3796 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3801 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3806 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3807 Valid choices are 'yes' and 'no'.])
3815 # All TARGET_ABI_OSF targets.
3816 alpha*-*-linux* | alpha*-*-*bsd*)
3817 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3818 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3821 extbl $3, $2, $3 !lituse_bytoff!1
3822 ldq $2, a($29) !literal!1
3823 ldq $4, b($29) !literal!2
3824 ldq_u $3, 0($2) !lituse_base!1
3825 ldq $27, f($29) !literal!5
3826 jsr $26, ($27), f !lituse_jsr!5
3827 ldah $29, 0($26) !gpdisp!3
3828 lda $0, c($29) !gprel
3829 ldah $1, d($29) !gprelhigh
3830 lda $1, d($1) !gprellow
3831 lda $29, 0($29) !gpdisp!3],,
3832 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3833 [Define if your assembler supports explicit relocations.])])
3834 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3835 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3838 ldq $27, a($29) !literal!1
3839 jsr $26, ($27), a !lituse_jsrdirect!1],,
3840 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3841 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3845 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3846 [--mlink-relax], [.text],,
3847 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3848 [Define if your avr assembler supports --mlink-relax option.])])
3850 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3852 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3853 [Define if your avr assembler supports -mrmw option.])])
3855 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3856 gcc_cv_as_avr_mgccisr,,
3862 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3863 [Define if your avr assembler supports -mgcc-isr option.])])
3865 # Check how default linker description file implements .rodata for
3866 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3867 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3868 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3869 cat > conftest.s <<EOF
3870 .section .rodata,"a",@progbits
3872 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3877 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3878 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3879 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3880 if test -s conftest.nm
3882 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3884 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3885 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3887 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3888 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3889 cat conftest.nm >&AS_MESSAGE_LOG_FD
3890 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3891 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3894 AC_MSG_RESULT(test failed)
3895 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
3896 cat conftest.s >&AS_MESSAGE_LOG_FD
3897 AC_MSG_WARN([[see `config.log' for details]])
3899 rm -f conftest.s conftest.o conftest.elf conftest.nm
3903 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3904 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3905 [-no-mul-bug-abort], [.text],,
3906 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3907 [Define if your assembler supports the -no-mul-bug-abort option.])])
3911 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3912 [.register %g2, #scratch],,
3913 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3914 [Define if your assembler supports .register.])])
3916 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3918 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3919 [Define if your assembler supports -relax option.])])
3921 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3922 gcc_cv_as_sparc_gotdata_op,,
3929 sethi %gdop_hix22(foo), %g1
3930 xor %g1, %gdop_lox10(foo), %g1
3931 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3932 [if test x$gcc_cv_ld != x \
3933 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3934 if test x$gcc_cv_objdump != x; then
3935 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3936 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3937 gcc_cv_as_sparc_gotdata_op=no
3939 gcc_cv_as_sparc_gotdata_op=yes
3944 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3945 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3947 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3948 gcc_cv_as_sparc_ua_pcrel,,
3956 .uaword %r_disp32(foo)],
3957 [if test x$gcc_cv_ld != x \
3958 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3959 gcc_cv_as_sparc_ua_pcrel=yes
3962 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3963 [Define if your assembler and linker support unaligned PC relative relocs.])
3965 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3966 gcc_cv_as_sparc_ua_pcrel_hidden,,
3971 .uaword %r_disp32(foo)
3972 .byte 0x32, 0x33, 0x34
3977 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3978 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3979 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3980 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3981 if $gcc_cv_objdump -R conftest 2> /dev/null \
3982 | grep 'DISP32' > /dev/null 2>&1; then
3985 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3989 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3990 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3991 ]) # unaligned pcrel relocs
3993 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3994 gcc_cv_as_sparc_offsetable_lo10,,
3997 or %g1, %lo(ab) + 12, %g1
3998 or %g1, %lo(ab + 12), %g1],
3999 [if test x$gcc_cv_objdump != x \
4000 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4001 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4002 gcc_cv_as_sparc_offsetable_lo10=yes
4004 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4005 [Define if your assembler supports offsetable %lo().])])
4007 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4008 gcc_cv_as_sparc_fmaf,,
4011 .register %g2, #scratch
4012 .register %g3, #scratch
4014 fmaddd %f0, %f2, %f4, %f6
4015 addxccc %g1, %g2, %g3
4016 fsrl32 %f2, %f4, %f8
4017 fnaddd %f10, %f12, %f14],,
4018 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4019 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4021 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4022 gcc_cv_as_sparc_sparc4,,
4025 .register %g2, #scratch
4026 .register %g3, #scratch
4029 1: cwbneg %g2, %g3, 1f
4032 aes_kexpand0 %f4, %f6, %f8
4033 des_round %f38, %f40, %f42, %f44
4034 camellia_f %f54, %f56, %f58, %f60
4035 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4036 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4037 [Define if your assembler supports SPARC4 instructions.])])
4039 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4040 gcc_cv_as_sparc_sparc5,,
4043 .register %g2, #scratch
4044 .register %g3, #scratch
4047 fpadd8 %f0, %f2, %f4],,
4048 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4049 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4051 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4052 gcc_cv_as_sparc_sparc6,,
4055 .register %g2, #scratch
4056 .register %g3, #scratch
4059 fpsll64x %f0, %f2, %f4],,
4060 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4061 [Define if your assembler supports SPARC6 instructions.])])
4063 gcc_GAS_CHECK_FEATURE([LEON instructions],
4064 gcc_cv_as_sparc_leon,,
4067 .register %g2, #scratch
4068 .register %g3, #scratch
4072 casa [[%g2]] 0xb, %g3, %g1],,
4073 [AC_DEFINE(HAVE_AS_LEON, 1,
4074 [Define if your assembler supports LEON instructions.])])
4078 i[34567]86-*-* | x86_64-*-*)
4082 # Full C++ conformance when using a shared libstdc++-v3 requires some
4083 # support from the Cygwin DLL, which in more recent versions exports
4084 # wrappers to aid in interposing and redirecting operators new, delete,
4085 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4086 # are configuring for a version of Cygwin that exports the wrappers.
4087 if test x$host = x$target && test x$host_cpu = xi686; then
4088 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4090 # Can't check presence of libc functions during cross-compile, so
4091 # we just have to assume we're building for an up-to-date target.
4092 gcc_ac_cygwin_dll_wrappers=yes
4094 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4095 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4096 [Define if you want to generate code by default that assumes that the
4097 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4100 cygwin* | pe | mingw32*)
4101 # Recent binutils allows the three-operand form of ".comm" on PE. This
4102 # definition is used unconditionally to initialise the default state of
4103 # the target option variable that governs usage of the feature.
4104 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4105 [2,19,52],,[.comm foo,1,32])
4106 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4107 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4108 [Define if your assembler supports specifying the alignment
4109 of objects allocated using the GAS .comm command.])
4110 # Used for DWARF 2 in PE
4111 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4112 gcc_cv_as_ix86_pe_secrel32,
4118 [if test x$gcc_cv_ld != x \
4119 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4120 gcc_cv_as_ix86_pe_secrel32=yes
4123 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4124 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4125 # Test if the assembler supports the extended form of the .section
4126 # directive that specifies section alignment. LTO support uses this,
4127 # but normally only after installation, so we warn but don't fail the
4128 # configure if LTO is enabled but the assembler does not support it.
4129 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4130 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4131 if test x$gcc_cv_as_section_has_align != xyes; then
4132 case ",$enable_languages," in
4134 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4141 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4142 [-xbrace_comment=no], [.text],,
4143 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4144 [Define if your assembler supports -xbrace_comment option.])])
4146 # Test if the assembler supports the section flag 'e' for specifying
4147 # an excluded section.
4148 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4149 [2,22,51], [--fatal-warnings],
4152 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4153 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4154 [Define if your assembler supports specifying the section flag e.])
4156 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4157 gcc_cv_as_ix86_filds,,,
4158 [filds (%ebp); fists (%ebp)],,
4159 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4160 [Define if your assembler uses filds and fists mnemonics.])])
4162 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4163 gcc_cv_as_ix86_fildq,,,
4164 [fildq (%ebp); fistpq (%ebp)],,
4165 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4166 [Define if your assembler uses fildq and fistq mnemonics.])])
4168 gcc_GAS_CHECK_FEATURE([cmov syntax],
4169 gcc_cv_as_ix86_cmov_sun_syntax,,,
4170 [cmovl.l %edx, %eax],,
4171 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4172 [Define if your assembler supports the Sun syntax for cmov.])])
4174 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4175 gcc_cv_as_ix86_ffreep,,,
4177 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4178 [Define if your assembler supports the ffreep mnemonic.])])
4180 gcc_GAS_CHECK_FEATURE([.quad directive],
4181 gcc_cv_as_ix86_quad,,,
4183 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4184 [Define if your assembler supports the .quad directive.])])
4186 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4187 gcc_cv_as_ix86_sahf,,,
4190 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4191 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4193 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4194 gcc_cv_as_ix86_interunit_movq,,,
4198 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4199 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4200 [Define if your assembler supports interunit movq mnemonic.])
4202 gcc_GAS_CHECK_FEATURE([hle prefixes],
4203 gcc_cv_as_ix86_hle,,,
4204 [lock xacquire cmpxchg %esi, (%ecx)],,
4205 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4206 [Define if your assembler supports HLE prefixes.])])
4208 gcc_GAS_CHECK_FEATURE([swap suffix],
4209 gcc_cv_as_ix86_swap,,,
4210 [movl.s %esp, %ebp],,
4211 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4212 [Define if your assembler supports the swap suffix.])])
4214 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4215 gcc_cv_as_ix86_diff_sect_delta,,,
4223 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4224 [Define if your assembler supports the subtraction of symbols in different sections.])])
4226 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4227 gcc_cv_as_ix86_rep_lock_prefix,,,
4233 lock addl %edi, (%eax,%esi)
4234 lock orl $0, (%esp)],,
4235 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4236 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4238 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4239 gcc_cv_as_ix86_ud2,,,
4241 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4242 [Define if your assembler supports the 'ud2' mnemonic.])])
4244 # Enforce 32-bit output with gas and gld.
4245 if test x$gas = xyes; then
4246 as_ix86_gas_32_opt="--32"
4248 if echo "$ld_ver" | grep GNU > /dev/null; then
4249 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4250 ld_ix86_gld_32_opt="-melf_i386_sol2"
4252 ld_ix86_gld_32_opt="-melf_i386"
4256 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4257 gcc_cv_as_ix86_tlsgdplt,,
4258 [$as_ix86_gas_32_opt],
4259 [call tls_gd@tlsgdplt],
4260 [if test x$gcc_cv_ld != x \
4261 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4262 gcc_cv_as_ix86_tlsgdplt=yes
4265 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4266 [Define if your assembler and linker support @tlsgdplt.])])
4269 .section .tdata,"aw'$tls_section_flag'",@progbits
4271 .section .text,"ax",@progbits
4272 call tls_ld@tlsldmplt'
4274 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4275 gcc_cv_as_ix86_tlsldmplt,,
4276 [$as_ix86_gas_32_opt],
4278 [if test x$gcc_cv_ld != x \
4279 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4280 gcc_cv_as_ix86_tlsldmplt=yes
4283 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4284 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4285 [Define to 1 if your assembler and linker support @tlsldmplt.])
4288 .section .text,"ax",@progbits
4290 .type _start, @function
4292 leal value@tlsldm(%ebx), %eax
4293 call ___tls_get_addr@plt
4295 .section .tdata,"aw'$tls_section_flag'",@progbits
4296 .type value, @object
4298 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4299 gcc_cv_as_ix86_tlsldm,,
4300 [$as_ix86_gas_32_opt],
4302 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4303 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4304 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4305 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4306 gcc_cv_as_ix86_tlsldm=yes
4310 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4311 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4312 [Define to 1 if your assembler and linker support @tlsldm.])
4323 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4324 gcc_cv_as_ix86_got32x,,
4325 [$as_ix86_gas_32_opt],
4327 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4328 && test x$gcc_cv_readelf != x \
4329 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4330 | grep R_386_GOT32X > /dev/null 2>&1 \
4331 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4332 if $gcc_cv_objdump -dw conftest 2>&1 \
4333 | grep 0xffffff > /dev/null 2>&1; then
4334 gcc_cv_as_ix86_got32x=no
4336 gcc_cv_as_ix86_got32x=yes
4340 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4341 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4342 [Define 0/1 if your assembler and linker support @GOT.])
4344 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4345 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4346 [$as_ix86_gas_32_opt],
4352 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4353 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4354 [Define true if the assembler supports '.long foo@GOTOFF'.])
4357 .section .text,"ax",@progbits
4359 .type _start, @function
4361 leal ld@tlsldm(%ecx), %eax
4362 call *___tls_get_addr@GOT(%ecx)
4363 leal gd@tlsgd(%ecx), %eax
4364 call *___tls_get_addr@GOT(%ecx)
4366 .section .tdata,"aw'$tls_section_flag'",@progbits
4374 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4375 gcc_cv_as_ix86_tls_get_addr_via_got,,
4376 [$as_ix86_gas_32_opt],
4378 [if test x$gcc_cv_ld != x \
4379 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4380 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4383 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4384 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4385 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4389 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4390 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4392 addl r15 = @ltoffx(x#), gp
4394 ld8.mov r16 = [[r15]], x#],,
4395 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4396 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4404 gcc_GAS_CHECK_FEATURE([.machine directive support],
4405 gcc_cv_as_machine_directive,,,
4406 [ .machine ppc7400])
4407 if test x$gcc_cv_as_machine_directive != xyes; then
4408 echo "*** This target requires an assembler supporting \".machine\"" >&2
4409 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4410 test x$build = x$target && exit 1
4416 *-*-aix*) conftest_s=' .machine "pwr5"
4419 *-*-darwin*) conftest_s=' .text
4421 *) conftest_s=' .machine power4
4426 gcc_GAS_CHECK_FEATURE([mfcr field support],
4427 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4429 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4430 [Define if your assembler supports mfcr field.])])
4433 *-*-aix*) conftest_s=' .machine "pwr5"
4436 *) conftest_s=' .machine power5
4441 gcc_GAS_CHECK_FEATURE([popcntb support],
4442 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4444 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4445 [Define if your assembler supports popcntb field.])])
4448 *-*-aix*) conftest_s=' .machine "pwr5x"
4451 *) conftest_s=' .machine power5
4456 gcc_GAS_CHECK_FEATURE([fp round support],
4457 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4459 [AC_DEFINE(HAVE_AS_FPRND, 1,
4460 [Define if your assembler supports fprnd.])])
4463 *-*-aix*) conftest_s=' .machine "pwr6"
4466 *) conftest_s=' .machine power6
4471 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4472 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4474 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4475 [Define if your assembler supports mffgpr and mftgpr.])])
4478 *-*-aix*) conftest_s=' .csect .text[[PR]]
4480 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4484 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4485 *) conftest_s=' .text
4487 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4490 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4491 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4493 [AC_DEFINE(HAVE_AS_REL16, 1,
4494 [Define if your assembler supports R_PPC_REL16 relocs.])])
4497 *-*-aix*) conftest_s=' .machine "pwr6"
4500 *) conftest_s=' .machine power6
4505 gcc_GAS_CHECK_FEATURE([compare bytes support],
4506 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4508 [AC_DEFINE(HAVE_AS_CMPB, 1,
4509 [Define if your assembler supports cmpb.])])
4512 *-*-aix*) conftest_s=' .machine "pwr6"
4515 *) conftest_s=' .machine power6
4520 gcc_GAS_CHECK_FEATURE([decimal float support],
4521 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4523 [AC_DEFINE(HAVE_AS_DFP, 1,
4524 [Define if your assembler supports DFP instructions.])])
4527 *-*-aix*) conftest_s=' .machine "pwr7"
4530 *) conftest_s=' .machine power7
4535 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4536 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4538 [AC_DEFINE(HAVE_AS_VSX, 1,
4539 [Define if your assembler supports VSX instructions.])])
4542 *-*-aix*) conftest_s=' .machine "pwr7"
4545 *) conftest_s=' .machine power7
4550 gcc_GAS_CHECK_FEATURE([popcntd support],
4551 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4553 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4554 [Define if your assembler supports POPCNTD instructions.])])
4557 *-*-aix*) conftest_s=' .machine "pwr8"
4558 .csect .text[[PR]]';;
4559 *) conftest_s=' .machine power8
4563 gcc_GAS_CHECK_FEATURE([power8 support],
4564 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4566 [AC_DEFINE(HAVE_AS_POWER8, 1,
4567 [Define if your assembler supports POWER8 instructions.])])
4570 *-*-aix*) conftest_s=' .machine "pwr9"
4571 .csect .text[[PR]]';;
4572 *) conftest_s=' .machine power9
4576 gcc_GAS_CHECK_FEATURE([power9 support],
4577 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4579 [AC_DEFINE(HAVE_AS_POWER9, 1,
4580 [Define if your assembler supports POWER9 instructions.])])
4583 *-*-aix*) conftest_s=' .csect .text[[PR]]
4585 *) conftest_s=' .text
4589 gcc_GAS_CHECK_FEATURE([lwsync support],
4590 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4592 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4593 [Define if your assembler supports LWSYNC instructions.])])
4596 *-*-aix*) conftest_s=' .machine "476"
4599 *) conftest_s=' .machine "476"
4604 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4605 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4607 [AC_DEFINE(HAVE_AS_DCI, 1,
4608 [Define if your assembler supports the DCI/ICI instructions.])])
4610 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4611 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4612 [.gnu_attribute 4,1],,
4613 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4614 [Define if your assembler supports .gnu_attribute.])])
4616 gcc_GAS_CHECK_FEATURE([tls marker support],
4617 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4618 [ bl __tls_get_addr(x@tlsgd)],,
4619 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4620 [Define if your assembler supports arg info for __tls_get_addr.])])
4622 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4623 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4624 [ .reloc .,R_PPC64_ENTRY; nop],,
4625 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4626 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4630 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4631 gcc_cv_as_aix_ref, [2,21,0],,
4632 [ .csect stuff[[rw]]
4638 [AC_DEFINE(HAVE_AS_REF, 1,
4639 [Define if your assembler supports .ref])])
4641 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4642 gcc_cv_as_aix_dwloc, [2,21,0],,
4647 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4648 [Define if your assembler supports AIX debug frame section label reference.])])
4654 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4655 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4656 [ lw $4,%gp_rel(foo)($4)],,
4657 [if test x$target_cpu_default = x
4658 then target_cpu_default=MASK_EXPLICIT_RELOCS
4659 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4662 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4663 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4664 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4665 [Define if the assembler understands -mno-shared.])])
4667 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4668 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4669 [.gnu_attribute 4,1],,
4670 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4671 [Define if your assembler supports .gnu_attribute.])])
4673 gcc_GAS_CHECK_FEATURE([.module support],
4674 gcc_cv_as_mips_dot_module,,[-32],
4677 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4678 [Define if your assembler supports .module.])])
4679 if test x$gcc_cv_as_mips_dot_module = xno \
4680 && test x$with_fp_32 != x; then
4682 [Requesting --with-fp-32= requires assembler support for .module.])
4685 gcc_GAS_CHECK_FEATURE([.micromips support],
4686 gcc_cv_as_micromips_support,,[--fatal-warnings],
4688 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4689 [Define if your assembler supports the .set micromips directive])])
4691 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4692 gcc_cv_as_mips_dtprelword, [2,18,0],,
4693 [.section .tdata,"awT",@progbits
4697 .dtprelword x+0x8000],,
4698 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4699 [Define if your assembler supports .dtprelword.])])
4701 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4702 gcc_cv_as_mips_dspr1_mult,,,
4712 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4713 [Define if your assembler supports DSPR1 mult.])])
4715 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4716 gcc_cv_as_ld_jalr_reloc=no
4717 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4718 if test $in_tree_ld = yes ; then
4719 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4720 && test $in_tree_ld_is_elf = yes; then
4721 gcc_cv_as_ld_jalr_reloc=yes
4723 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4724 echo ' .ent x' > conftest.s
4725 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4726 echo ' lw $25,%call16(y)($28)' >> conftest.s
4727 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4728 echo '1: jalr $25' >> conftest.s
4729 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4730 echo '1: jalr $25' >> conftest.s
4731 echo ' .end x' >> conftest.s
4732 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4733 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4734 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4735 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4736 gcc_cv_as_ld_jalr_reloc=yes
4742 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4743 if test x$target_cpu_default = x; then
4744 target_cpu_default=MASK_RELAX_PIC_CALLS
4746 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4749 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4751 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4752 [gcc_cv_ld_mips_personality_relaxation],
4753 [gcc_cv_ld_mips_personality_relaxation=no
4754 if test $in_tree_ld = yes ; then
4755 if test "$gcc_cv_gld_major_version" -eq 2 \
4756 -a "$gcc_cv_gld_minor_version" -ge 21 \
4757 -o "$gcc_cv_gld_major_version" -gt 2; then
4758 gcc_cv_ld_mips_personality_relaxation=yes
4760 elif test x$gcc_cv_as != x \
4761 -a x$gcc_cv_ld != x \
4762 -a x$gcc_cv_readelf != x ; then
4763 cat > conftest.s <<EOF
4765 .cfi_personality 0x80,indirect_ptr
4772 .section .data,"aw",@progbits
4776 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4777 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4778 if $gcc_cv_readelf -d conftest 2>&1 \
4779 | grep TEXTREL > /dev/null 2>&1; then
4781 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4782 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4785 gcc_cv_ld_mips_personality_relaxation=yes
4789 rm -f conftest.s conftest.o conftest])
4790 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4791 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4792 [Define if your linker can relax absolute .eh_frame personality
4793 pointers into PC-relative form.])
4796 gcc_GAS_CHECK_FEATURE([-mnan= support],
4797 gcc_cv_as_mips_nan,,
4799 [AC_DEFINE(HAVE_AS_NAN, 1,
4800 [Define if the assembler understands -mnan=.])])
4801 if test x$gcc_cv_as_mips_nan = xno \
4802 && test x$with_nan != x; then
4804 [Requesting --with-nan= requires assembler support for -mnan=])
4808 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4809 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4810 [.gnu_attribute 8,1],,
4811 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4812 [Define if your assembler supports .gnu_attribute.])])
4813 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4814 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4819 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4820 [Define if your assembler supports .machine and .machinemode.])])
4821 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4822 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4823 [ .machine z13+vx ],,
4824 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4825 [Define if your assembler supports architecture modifiers.])])
4829 # Mips and HP-UX need the GNU assembler.
4830 # Linux on IA64 might be able to use the Intel assembler.
4833 mips*-*-* | *-*-hpux* )
4834 if test x$gas_flag = xyes \
4835 || test x"$host" != x"$build" \
4836 || test ! -x "$gcc_cv_as" \
4837 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4840 echo "*** This configuration requires the GNU assembler" >&2
4846 # ??? Not all targets support dwarf2 debug_line, even within a version
4847 # of gas. Moreover, we need to emit a valid instruction to trigger any
4848 # info to the output file. So, as supported targets are added to gas 2.11,
4849 # add some instruction here to (also) show we expect this might work.
4850 # ??? Once 2.11 is released, probably need to add first known working
4851 # version to the per-target configury.
4853 aarch64 | alpha | arc | arm | avr | bfin | cris | i386 | m32c | m68k \
4854 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4855 | tilegx | tilepro | visium | xstormy16 | xtensa)
4865 if test x"$insn" != x; then
4867 .file 1 \"conftest.s\"
4870 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4871 gcc_cv_as_dwarf2_debug_line,
4872 [elf,2,11,0],, [$conftest_s],
4873 [if test x$gcc_cv_objdump != x \
4874 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4875 | grep debug_line > /dev/null 2>&1; then
4876 gcc_cv_as_dwarf2_debug_line=yes
4879 # The .debug_line file table must be in the exact order that
4880 # we specified the files, since these indices are also used
4881 # by DW_AT_decl_file. Approximate this test by testing if
4882 # the assembler bitches if the same index is assigned twice.
4883 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4884 gcc_cv_as_dwarf2_file_buggy,,,
4888 if test $gcc_cv_as_dwarf2_debug_line = yes \
4889 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4890 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4891 [Define if your assembler supports dwarf2 .file/.loc directives,
4892 and preserves file table indices exactly as given.])
4895 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4896 gcc_cv_as_gdwarf2_flag,
4897 [elf,2,11,0], [--gdwarf2], [$insn],,
4898 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4899 [Define if your assembler supports the --gdwarf2 option.])])
4901 gcc_GAS_CHECK_FEATURE([--gstabs option],
4902 gcc_cv_as_gstabs_flag,
4903 [elf,2,11,0], [--gstabs], [$insn],,
4904 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4905 [Define if your assembler supports the --gstabs option.])])
4907 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4908 gcc_cv_as_debug_prefix_map_flag,
4909 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4910 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4911 [Define if your assembler supports the --debug-prefix-map option.])])
4914 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4915 gcc_cv_as_compress_debug,,,,
4916 [# gas compiled without zlib cannot compress debug sections and warns
4917 # about it, but still exits successfully. So check for this, too.
4918 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4920 gcc_cv_as_compress_debug=0
4921 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4922 # defaulting to the ELF gABI format.
4923 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4925 gcc_cv_as_compress_debug=2
4926 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4927 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4928 # Before binutils 2.26, gas only supported --compress-debug-options and
4929 # emitted the traditional GNU format.
4930 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4932 gcc_cv_as_compress_debug=1
4933 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4934 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4936 gcc_cv_as_compress_debug=0
4938 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4939 [Define to the level of your assembler's compressed debug section support.])
4940 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4941 [Define to the assembler option to enable compressed debug sections.])
4942 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4943 [Define to the assembler option to disable compressed debug sections.])
4945 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4948 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4949 [Define if your assembler supports .lcomm with an alignment field.])])
4951 if test x$with_sysroot = x && test x$host = x$target \
4952 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4953 && test "$prefix" != "NONE"; then
4954 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4955 [Define to PREFIX/include if cpp should also search that directory.])
4958 # Determine the version of glibc, if any, used on the target.
4959 AC_MSG_CHECKING([for target glibc version])
4960 AC_ARG_WITH([glibc-version],
4961 [AS_HELP_STRING([--with-glibc-version=M.N],
4962 [assume GCC used with glibc version M.N or later])], [
4963 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4964 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4965 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4967 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4969 glibc_version_major=0
4970 glibc_version_minor=0
4971 [if test -f $target_header_dir/features.h \
4972 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4973 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4974 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4975 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4977 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4978 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4979 [GNU C Library major version number used on the target, or 0.])
4980 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4981 [GNU C Library minor version number used on the target, or 0.])
4983 AC_ARG_ENABLE(gnu-unique-object,
4984 [AS_HELP_STRING([--enable-gnu-unique-object],
4985 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4986 [case $enable_gnu_unique_object in
4988 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4989 Valid choices are 'yes' and 'no'.]) ;;
4991 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4993 [.type foo, '$target_type_format_char'gnu_unique_object],,
4994 # We need to unquote above to to use the definition from config.gcc.
4995 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4996 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4998 if test x$enable_gnu_unique_object = xyes; then
4999 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5000 [Define if your assembler supports @gnu_unique_object.])
5003 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5004 [gcc_cv_as_line_zero],
5005 [gcc_cv_as_line_zero=no
5006 if test $in_tree_gas = yes; then
5007 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5008 elif test "x$gcc_cv_as" != x; then
5009 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5010 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5011 test "x`cat conftest.out`" = x
5013 gcc_cv_as_line_zero=yes
5015 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5016 cat conftest.s >&AS_MESSAGE_LOG_FD
5017 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5018 cat conftest.out >&AS_MESSAGE_LOG_FD
5020 rm -f conftest.o conftest.s conftest.out
5022 if test "x$gcc_cv_as_line_zero" = xyes; then
5023 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5024 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5027 AC_MSG_CHECKING(support for thin archives)
5028 thin_archive_support=no
5029 echo 'int main (void) { return 0; }' > conftest.c
5030 if ($AR --version | sed 1q | grep "GNU ar" \
5031 && $CC $CFLAGS -c conftest.c \
5032 && $AR rcT conftest.a conftest.o \
5033 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5034 thin_archive_support=yes
5036 rm -f conftest.c conftest.o conftest.a conftest
5037 AC_MSG_RESULT($thin_archive_support)
5038 AC_SUBST(thin_archive_support)
5040 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5041 gcc_cv_ld_eh_frame_hdr=no
5042 if test $in_tree_ld = yes ; then
5043 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5044 && test $in_tree_ld_is_elf = yes; then
5045 gcc_cv_ld_eh_frame_hdr=yes
5047 elif test x$gcc_cv_ld != x; then
5048 if echo "$ld_ver" | grep GNU > /dev/null; then
5049 # Check if linker supports --eh-frame-hdr option
5050 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5051 gcc_cv_ld_eh_frame_hdr=yes
5056 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5057 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5058 gcc_cv_ld_eh_frame_hdr=yes
5064 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5065 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5066 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5067 [Define if your linker supports .eh_frame_hdr.])
5069 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5071 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5072 gcc_cv_ld_eh_frame_ciev3=no
5073 if test $in_tree_ld = yes ; then
5074 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5075 && test $in_tree_ld_is_elf = yes; then
5076 gcc_cv_ld_eh_frame_ciev3=yes
5078 elif test x$gcc_cv_ld != x; then
5079 if echo "$ld_ver" | grep GNU > /dev/null; then
5080 gcc_cv_ld_eh_frame_ciev3=yes
5081 if test 0"$ld_date" -lt 20040513; then
5082 if test -n "$ld_date"; then
5083 # If there was date string, but was earlier than 2004-05-13, fail
5084 gcc_cv_ld_eh_frame_ciev3=no
5085 elif test "$ld_vers_major" -lt 2; then
5086 gcc_cv_ld_eh_frame_ciev3=no
5087 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5088 gcc_cv_ld_eh_frame_ciev3=no
5094 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5095 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5096 gcc_cv_ld_eh_frame_ciev3=yes
5102 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5103 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5104 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5105 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5107 AC_MSG_CHECKING(linker position independent executable support)
5109 if test $in_tree_ld = yes ; then
5111 # Full PIE support on Solaris was only introduced in gld 2.26.
5112 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5113 *) gcc_gld_pie_min_version=15 ;;
5115 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \
5116 && test $in_tree_ld_is_elf = yes; then
5119 elif test x$gcc_cv_ld != x; then
5120 # Check if linker supports -pie option
5121 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5125 if echo "$ld_ver" | grep GNU > /dev/null \
5126 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5133 *-*-solaris2.1[[1-9]]*)
5134 # Solaris 11.3 added PIE support.
5135 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5142 if test x"$gcc_cv_ld_pie" = xyes; then
5143 AC_DEFINE(HAVE_LD_PIE, 1,
5144 [Define if your linker supports PIE option.])
5146 AC_MSG_RESULT($gcc_cv_ld_pie)
5148 AC_MSG_CHECKING(linker PIE support with copy reloc)
5149 gcc_cv_ld_pie_copyreloc=no
5150 if test $gcc_cv_ld_pie = yes ; then
5151 if test $in_tree_ld = yes ; then
5152 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5153 gcc_cv_ld_pie_copyreloc=yes
5155 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5156 # Check if linker supports -pie option with copy reloc
5158 i?86-*-linux* | x86_64-*-linux*)
5159 cat > conftest1.s <<EOF
5162 .type a_glob, @object
5167 cat > conftest2.s <<EOF
5170 .type main, @function
5172 movl %eax, a_glob(%rip)
5175 .section .data.rel,"aw",@progbits
5180 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5181 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5182 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5183 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5184 gcc_cv_ld_pie_copyreloc=yes
5186 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5191 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5192 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5193 [Define 0/1 if your linker supports -pie option with copy reloc.])
5194 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5196 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5197 gcc_cv_ld_eh_gc_sections=no
5198 if test $in_tree_ld = yes ; then
5199 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5200 && test $in_tree_ld_is_elf = yes; then
5201 gcc_cv_ld_eh_gc_sections=yes
5203 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5204 cat > conftest.s <<EOF
5207 .type _start, @function
5210 .size _start, .-_start
5211 .section .text.foo,"ax",@progbits
5212 .type foo, @function
5216 .section .gcc_except_table.foo,"a",@progbits
5219 .section .eh_frame,"a",@progbits
5222 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5223 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5224 | grep "gc-sections option ignored" > /dev/null; then
5225 gcc_cv_ld_eh_gc_sections=no
5226 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5227 | grep gcc_except_table > /dev/null; then
5228 gcc_cv_ld_eh_gc_sections=yes
5229 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5230 if test x$gcc_cv_as_comdat_group != xyes; then
5231 gcc_cv_ld_eh_gc_sections=no
5232 cat > conftest.s <<EOF
5235 .type _start, @function
5238 .size _start, .-_start
5239 .section .gnu.linkonce.t.foo,"ax",@progbits
5240 .type foo, @function
5244 .section .gcc_except_table.foo,"a",@progbits
5247 .section .eh_frame,"a",@progbits
5250 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5251 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5252 | grep "gc-sections option ignored" > /dev/null; then
5253 gcc_cv_ld_eh_gc_sections=no
5254 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5255 | grep gcc_except_table > /dev/null; then
5256 gcc_cv_ld_eh_gc_sections=yes
5262 rm -f conftest.s conftest.o conftest
5266 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5267 gcc_cv_ld_eh_gc_sections=no
5270 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5271 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5272 [Define if your linker supports garbage collection of
5273 sections in presence of EH frames.])
5275 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5277 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5278 gcc_cv_ld_eh_gc_sections_bug=no
5279 if test $in_tree_ld = yes ; then
5280 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5281 && test $in_tree_ld_is_elf = yes; then
5282 gcc_cv_ld_eh_gc_sections_bug=yes
5284 elif test x$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
5285 gcc_cv_ld_eh_gc_sections_bug=yes
5286 cat > conftest.s <<EOF
5289 .type _start, @function
5292 .size _start, .-_start
5293 .section .text.startup.foo,"ax",@progbits
5294 .type foo, @function
5298 .section .gcc_except_table.foo,"a",@progbits
5301 .section .eh_frame,"a",@progbits
5304 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5305 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5306 | grep "gc-sections option ignored" > /dev/null; then
5308 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5309 | grep gcc_except_table > /dev/null; then
5310 gcc_cv_ld_eh_gc_sections_bug=no
5313 rm -f conftest.s conftest.o conftest
5315 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5316 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5317 [Define if your linker has buggy garbage collection of
5318 sections support when .text.startup.foo like sections are used.])
5320 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5322 AC_MSG_CHECKING(linker for compressed debug sections)
5323 # gold/gld support compressed debug sections since binutils 2.19/2.21
5324 # In binutils 2.26, gld gained support for the ELF gABI format.
5325 if test $in_tree_ld = yes ; then
5326 gcc_cv_ld_compress_debug=0
5327 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5328 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5329 gcc_cv_ld_compress_debug=2
5330 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5331 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5332 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5333 gcc_cv_ld_compress_debug=3
5334 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5335 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5336 && test $in_tree_ld_is_elf = yes; then
5337 gcc_cv_ld_compress_debug=1
5339 elif echo "$ld_ver" | grep GNU > /dev/null; then
5340 if test "$ld_vers_major" -lt 2 \
5341 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5342 gcc_cv_ld_compress_debug=0
5343 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5344 gcc_cv_ld_compress_debug=1
5346 gcc_cv_ld_compress_debug=3
5347 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5349 if test $ld_is_gold = yes; then
5350 gcc_cv_ld_compress_debug=2
5351 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5357 # Introduced in Solaris 11.2.
5358 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5359 gcc_cv_ld_compress_debug=3
5360 gcc_cv_ld_compress_debug_option="-z compress-sections"
5362 gcc_cv_ld_compress_debug=0
5366 # Assume linkers other than GNU ld don't support compessed debug
5368 gcc_cv_ld_compress_debug=0
5373 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5374 [Define to the level of your linker's compressed debug section support.])
5375 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5376 [Define to the linker option to enable compressed debug sections.])
5377 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5379 if test x"$ld64_flag" = x"yes"; then
5381 # Set defaults for possibly untestable items.
5382 gcc_cv_ld64_export_dynamic=0
5384 if test "$build" = "$host"; then
5390 # On Darwin, because of FAT library support, it is often possible to execute
5391 # exes from compatible archs even when the host differs from the build system.
5392 case "$build","$host" in
5393 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5398 # If the configurer specified a minimum ld64 version to be supported, then use
5399 # that to determine feature support.
5400 if test x"${gcc_cv_ld64_version}" != x; then
5401 AC_MSG_CHECKING(ld64 specified version)
5402 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5403 AC_MSG_RESULT($gcc_cv_ld64_major)
5404 if test "$gcc_cv_ld64_major" -ge 236; then
5405 gcc_cv_ld64_export_dynamic=1
5407 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5408 # If the version was not specified, try to find it.
5409 AC_MSG_CHECKING(linker version)
5410 if test x"${gcc_cv_ld64_version}" = x; then
5411 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5413 AC_MSG_RESULT($gcc_cv_ld64_version)
5415 AC_MSG_CHECKING(linker for -export_dynamic support)
5416 gcc_cv_ld64_export_dynamic=1
5417 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5418 gcc_cv_ld64_export_dynamic=0
5420 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5423 if test x"${gcc_cv_ld64_version}" != x; then
5424 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5425 [Define to ld64 version.])
5428 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5429 [Define to 1 if ld64 supports '-export_dynamic'.])
5436 AC_CACHE_CHECK(linker --as-needed support,
5437 gcc_cv_ld_as_needed,
5438 [gcc_cv_ld_as_needed=no
5439 gcc_cv_ld_as_needed_option='--as-needed'
5440 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5441 if test $in_tree_ld = yes ; then
5442 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5443 && test $in_tree_ld_is_elf = yes; then
5444 gcc_cv_ld_as_needed=yes
5446 elif test x$gcc_cv_ld != x; then
5447 # Check if linker supports --as-needed and --no-as-needed options
5448 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5449 gcc_cv_ld_as_needed=yes
5451 case "$target:$gnu_ld" in
5453 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5455 gcc_cv_ld_as_needed=yes
5456 gcc_cv_ld_as_needed_option="-z ignore"
5457 gcc_cv_ld_no_as_needed_option="-z record"
5461 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5462 # dl_iterate_phdr, i.e. since Solaris 11.
5464 *-*-solaris2.1[[1-9]]*)
5466 i?86-*-* | x86_64-*-*)
5467 if echo "$ld_ver" | grep GNU > /dev/null; then
5468 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5469 gcc_cv_ld_as_needed=no
5475 gcc_cv_ld_as_needed=no
5479 if test x"$gcc_cv_ld_as_needed" = xyes; then
5480 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5481 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5482 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5483 [Define to the linker option to ignore unused dependencies.])
5484 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5485 [Define to the linker option to keep unused dependencies.])
5488 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5489 saved_LDFLAGS="$LDFLAGS"
5490 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5491 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5492 AC_LINK_IFELSE([int main(void) {return 0;}],
5493 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5495 LDFLAGS="$saved_LDFLAGS"
5496 if test "x$gcc_cv_ld_clearcap" = xyes; then
5497 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5498 [Define if the linker supports clearing hardware capabilities via mapfile.])
5499 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5501 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5507 emul_name="-melf32lppc"
5510 emul_name="-melf32ppc"
5513 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5515 [gcc_cv_ld_ppc_attr=no
5516 if test x"$ld_is_gold" = xyes; then
5517 gcc_cv_ld_ppc_attr=yes
5518 elif test $in_tree_ld = yes ; then
5519 if test "$gcc_cv_gld_major_version" -eq 2 \
5520 -a "$gcc_cv_gld_minor_version" -ge 28 \
5521 -o "$gcc_cv_gld_major_version" -gt 2; then
5522 gcc_cv_ld_ppc_attr=yes
5524 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5525 # check that merging the long double .gnu_attribute doesn't warn
5526 cat > conftest1.s <<EOF
5529 cat > conftest2.s <<EOF
5532 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5533 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5534 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5535 && test ! -s conftest.err; then
5536 gcc_cv_ld_ppc_attr=yes
5538 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5541 if test x$gcc_cv_ld_ppc_attr = xyes; then
5542 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5543 [Define if your PowerPC linker has .gnu.attributes long double support.])
5548 case "$target:$tm_file" in
5549 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5552 emul_name="-melf64lppc"
5555 emul_name="-melf64ppc"
5558 emul_name="-melf64ppc_fbsd"
5561 AC_CACHE_CHECK(linker support for omitting dot symbols,
5562 gcc_cv_ld_no_dot_syms,
5563 [gcc_cv_ld_no_dot_syms=no
5564 if test x"$ld_is_gold" = xyes; then
5565 gcc_cv_ld_no_dot_syms=yes
5566 elif test $in_tree_ld = yes ; then
5567 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5568 gcc_cv_ld_no_dot_syms=yes
5570 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5571 cat > conftest1.s <<EOF
5575 cat > conftest2.s <<EOF
5576 .section ".opd","aw"
5581 .quad .LEfoo,.TOC.@tocbase,0
5587 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5588 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5589 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5590 gcc_cv_ld_no_dot_syms=yes
5592 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5595 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5596 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5597 [Define if your PowerPC64 linker only needs function descriptor syms.])
5600 AC_CACHE_CHECK(linker large toc support,
5601 gcc_cv_ld_large_toc,
5602 [gcc_cv_ld_large_toc=no
5603 if test x"$ld_is_gold" = xyes; then
5604 gcc_cv_ld_large_toc=yes
5605 elif test $in_tree_ld = yes ; then
5606 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5607 gcc_cv_ld_large_toc=yes
5609 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5610 cat > conftest.s <<EOF
5611 .section ".tbss","awT",@nobits
5617 addis 9,13,ie0@got@tprel@ha
5618 ld 9,ie0@got@tprel@l(9)
5620 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5621 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5622 gcc_cv_ld_large_toc=yes
5624 rm -f conftest conftest.o conftest.s
5627 if test x"$gcc_cv_ld_large_toc" = xyes; then
5628 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5629 [Define if your PowerPC64 linker supports a large TOC.])
5632 AC_CACHE_CHECK(linker toc pointer alignment,
5633 gcc_cv_ld_toc_align,
5634 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5635 cat > conftest.s <<EOF
5640 .section .data.rel.ro,"aw",@progbits
5645 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5646 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5647 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5649 rm -f conftest conftest.o conftest.s
5652 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5653 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5654 [Define to .TOC. alignment forced by your linker.])
5661 AC_CACHE_CHECK(linker large toc support,
5662 gcc_cv_ld_large_toc,
5663 [gcc_cv_ld_large_toc=no
5664 if test x$gcc_cv_as != x ; then
5665 cat > conftest.s <<EOF
5675 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5676 gcc_cv_ld_large_toc=yes
5678 rm -f conftest conftest.o conftest.s
5681 if test x"$gcc_cv_ld_large_toc" = xyes; then
5682 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5683 [Define if your PowerPC64 linker supports a large TOC.])
5688 AC_CACHE_CHECK(linker --build-id support,
5690 [gcc_cv_ld_buildid=no
5691 if test $in_tree_ld = yes ; then
5692 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5693 "$gcc_cv_gld_minor_version" -ge 18 -o \
5694 "$gcc_cv_gld_major_version" -gt 2 \
5695 && test $in_tree_ld_is_elf = yes; then
5696 gcc_cv_ld_buildid=yes
5698 elif test x$gcc_cv_ld != x; then
5699 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5700 gcc_cv_ld_buildid=yes
5703 if test x"$gcc_cv_ld_buildid" = xyes; then
5704 AC_DEFINE(HAVE_LD_BUILDID, 1,
5705 [Define if your linker supports --build-id.])
5708 AC_ARG_ENABLE(linker-build-id,
5709 [AS_HELP_STRING([--enable-linker-build-id],
5710 [compiler will always pass --build-id to linker])],
5712 enable_linker_build_id=no)
5714 if test x"$enable_linker_build_id" = xyes; then
5715 if test x"$gcc_cv_ld_buildid" = xyes; then
5716 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5717 [Define if gcc should always pass --build-id to linker.])
5719 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5723 # In binutils 2.21, GNU ld gained support for new emulations fully
5724 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5725 AC_CACHE_CHECK(linker *_sol2 emulation support,
5726 gcc_cv_ld_sol2_emulation,
5727 [gcc_cv_ld_sol2_emulation=no
5728 if test $in_tree_ld = yes ; then
5729 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5730 "$gcc_cv_gld_minor_version" -ge 21 -o \
5731 "$gcc_cv_gld_major_version" -gt 2 \
5732 && test $in_tree_ld_is_elf = yes; then
5733 gcc_cv_ld_sol2_emulation=yes
5735 elif test x$gcc_cv_ld != x; then
5736 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5737 grep _sol2 > /dev/null; then
5738 gcc_cv_ld_sol2_emulation=yes
5741 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5742 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5743 [Define if your linker supports the *_sol2 emulations.])
5746 AC_CACHE_CHECK(linker --sysroot support,
5748 [gcc_cv_ld_sysroot=no
5749 if test $in_tree_ld = yes ; then
5750 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5751 gcc_cv_ld_sysroot=yes
5753 elif test x$gcc_cv_ld != x; then
5754 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5755 gcc_cv_ld_sysroot=yes
5758 if test x"$gcc_cv_ld_sysroot" = xyes; then
5759 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5760 [Define if your linker supports --sysroot.])
5765 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5766 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5767 gcc_cv_solaris_crts,
5768 [gcc_cv_solaris_crts=no
5769 if test x$host != x$target; then
5770 if test "x$with_sysroot" = xyes; then
5771 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5773 target_sysroot="${with_sysroot}"
5776 target_libdir="$target_sysroot/usr/lib"
5777 # At the time they were added, gcrt1.o became a symlink for backwards
5778 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5780 i?86-*-solaris2* | x86_64-*-solaris2*)
5781 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5784 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5789 if test x$gcc_cv_solaris_crts = xyes; then
5790 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5791 [Define if the system-provided CRTs are present on Solaris.])
5794 AC_ARG_ENABLE(libssp,
5795 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5796 [case "${enableval}" in
5800 AC_MSG_ERROR([unknown libssp setting $enableval])
5804 # Test for stack protector support in target C library.
5805 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5806 gcc_cv_libc_provides_ssp,
5807 [gcc_cv_libc_provides_ssp=no
5808 if test "x$enable_libssp" = "xno"; then
5809 gcc_cv_libc_provides_ssp=yes
5810 elif test "x$enable_libssp" = "xyes"; then
5811 gcc_cv_libc_provides_ssp=no
5815 # All versions of musl provide stack protector
5816 gcc_cv_libc_provides_ssp=yes;;
5817 *-*-linux* | *-*-kfreebsd*-gnu)
5818 # glibc 2.4 and later provides __stack_chk_fail and
5819 # either __stack_chk_guard, or TLS access to stack guard canary.
5820 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5821 [if test -f $target_header_dir/features.h \
5822 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5823 $target_header_dir/features.h > /dev/null; then
5824 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5825 $target_header_dir/features.h > /dev/null && \
5826 test -f $target_header_dir/bits/uClibc_config.h && \
5827 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5828 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5829 gcc_cv_libc_provides_ssp=yes
5831 # all versions of Bionic support stack protector
5832 elif test -f $target_header_dir/sys/cdefs.h \
5833 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5834 $target_header_dir/sys/cdefs.h > /dev/null; then
5835 gcc_cv_libc_provides_ssp=yes
5839 # Avoid complicated tests (see
5840 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5841 # simply assert that glibc does provide this, which is true for all
5842 # realistically usable GNU/Hurd configurations.
5843 # All supported versions of musl provide it as well
5844 gcc_cv_libc_provides_ssp=yes;;
5845 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5846 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5847 [echo "no __stack_chk_fail on this target"])
5849 *) gcc_cv_libc_provides_ssp=no ;;
5853 if test x$gcc_cv_libc_provides_ssp = xyes; then
5854 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5855 [Define if your target C library provides stack protector support])
5858 # Check whether --enable-default-ssp was given.
5859 AC_ARG_ENABLE(default-ssp,
5860 [AS_HELP_STRING([--enable-default-ssp],
5861 [enable Stack Smashing Protection as default])],[
5862 if test x$gcc_cv_libc_provides_ssp = xyes; then
5864 ia64*-*-*) enable_default_ssp=no ;;
5865 *) enable_default_ssp=$enableval ;;
5868 enable_default_ssp=no
5870 enable_default_ssp=no)
5871 if test x$enable_default_ssp = xyes ; then
5872 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5873 [Define if your target supports default stack protector and it is enabled.])
5875 AC_SUBST([enable_default_ssp])
5877 # Test for <sys/sdt.h> on the target.
5878 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5879 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5881 if test -f $target_header_dir/sys/sdt.h; then
5883 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5884 [Define if your target C library provides sys/sdt.h])
5886 AC_MSG_RESULT($have_sys_sdt_h)
5888 # Check if TFmode long double should be used by default or not.
5889 # Some glibc targets used DFmode long double, but with glibc 2.4
5890 # and later they can use TFmode.
5892 powerpc*-*-linux* | \
5896 AC_ARG_WITH(long-double-128,
5897 [AS_HELP_STRING([--with-long-double-128],
5898 [use 128-bit long double by default])],
5899 gcc_cv_target_ldbl128="$with_long_double_128",
5900 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5901 [gcc_cv_target_ldbl128=no
5902 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5903 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5904 && gcc_cv_target_ldbl128=yes
5908 if test x$gcc_cv_target_ldbl128 = xyes; then
5909 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5910 [Define if TFmode long double should be the default])
5913 # Check if TFmode long double target should use the IBM extended double or IEEE
5914 # 128-bit floating point formats if long doubles are 128-bits long. The long
5915 # double type can only be switched on powerpc64 bit Linux systems where VSX is
5916 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
5918 AC_ARG_WITH([long-double-format],
5919 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
5920 [Specify whether PowerPC long double uses IEEE or IBM format])],[
5921 case "$target:$with_long_double_format" in
5922 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
5925 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
5926 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
5928 power7 | power8 | power9 | power1*)
5932 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
5933 supported if the default cpu is power7 or newer])
5934 with_long_double_format=""
5938 xpowerpc64*-*-linux*:*)
5939 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
5940 with_long_double_format=""
5943 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
5944 on 64-bit PowerPC VSX Linux systems])
5945 with_long_double_format=""
5950 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5951 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5952 gcc_cv_libc_provides_hwcap_in_tcb=no
5955 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5958 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5959 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5960 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5963 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5964 gcc_cv_target_dl_iterate_phdr=unknown
5966 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5967 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5968 # libdl there, both complicating its use and breaking compatibility
5969 # between Solaris 10 updates.
5970 *-*-solaris2.1[[1-9]]*)
5971 # <link.h> needs both a dl_iterate_phdr declaration and support for
5972 # compilation with largefile support.
5973 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5974 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5975 gcc_cv_target_dl_iterate_phdr=yes
5977 gcc_cv_target_dl_iterate_phdr=no
5980 *-*-dragonfly* | *-*-freebsd*)
5981 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5982 gcc_cv_target_dl_iterate_phdr=yes
5984 gcc_cv_target_dl_iterate_phdr=no
5988 gcc_cv_target_dl_iterate_phdr=yes
5991 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5992 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5993 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5994 [Define if your target C library provides the `dl_iterate_phdr' function.])
5996 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5998 # We no longer support different GC mechanisms. Emit an error if
5999 # the user configures with --with-gc.
6001 [AS_HELP_STRING([--with-gc={page,zone}],
6002 [this option is not supported anymore. It used to choose
6003 the garbage collection mechanism to use with the compiler])],
6004 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6007 # Libraries to use on the host. This will normally be set by the top
6008 # level Makefile. Here we simply capture the value for our Makefile.
6009 if test -z "${HOST_LIBS+set}"; then
6014 # Use the system's zlib library.
6017 dnl Very limited version of automake's enable-maintainer-mode
6019 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6020 dnl maintainer-mode is disabled by default
6021 AC_ARG_ENABLE(maintainer-mode,
6022 [AS_HELP_STRING([--enable-maintainer-mode],
6023 [enable make rules and dependencies not useful
6024 (and sometimes confusing) to the casual installer])],
6025 maintainer_mode=$enableval,
6028 AC_MSG_RESULT($maintainer_mode)
6030 if test "$maintainer_mode" = "yes"; then
6037 dnl Whether to prevent multiple front-ends from linking at the same time
6039 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6040 AC_ARG_ENABLE(link-mutex,
6041 [AS_HELP_STRING([--enable-link-mutex],
6042 [avoid linking multiple front-ends at once to avoid thrashing
6043 on the build machine])],
6044 do_link_mutex=$enableval,
6046 AC_MSG_RESULT($do_link_mutex)
6048 if test "$do_link_mutex" = "yes"; then
6053 AC_SUBST(DO_LINK_MUTEX)
6059 # Make empty files to contain the specs and options for each language.
6060 # Then add #include lines to for a compiler that has specs and/or options.
6066 # These (without "all_") are set in each config-lang.in.
6067 # `language' must be a single word so is spelled singularly.
6070 all_outputs='Makefile'
6071 # List of language makefile fragments.
6073 # Additional files for gengtype
6074 all_gtfiles="$target_gtfiles"
6076 # These are the languages that are set in --enable-languages,
6077 # and are available in the GCC tree.
6078 all_selected_languages=
6080 # Add the language fragments.
6081 # Languages are added via two mechanisms. Some information must be
6082 # recorded in makefile variables, these are defined in config-lang.in.
6083 # We accumulate them and plug them into the main Makefile.
6084 # The other mechanism is a set of hooks for each of the main targets
6085 # like `clean', `install', etc.
6087 language_hooks="Make-hooks"
6089 for lang in ${srcdir}/*/config-lang.in
6092 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6094 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6095 if test "x$lang_alias" = x
6097 echo "$lang doesn't set \$language." 1>&2
6100 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6101 subdirs="$subdirs $subdir"
6103 # $gcc_subdir is where the gcc integration files are to be found
6104 # for a language, both for internal compiler purposes (compiler
6105 # sources implementing front-end to GCC tree converters), and for
6106 # build infrastructure purposes (Make-lang.in, etc.)
6108 # This will be <subdir> (relative to $srcdir) if a line like
6109 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6110 # is found in <langdir>/config-lang.in, and will remain <langdir>
6113 # Except for the language alias (fetched above), the regular
6114 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6115 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6116 # only this and the language alias.
6118 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6119 if [ "$gcc_subdir" = "" ]; then
6120 gcc_subdir="$subdir"
6123 case ",$enable_languages," in
6125 all_selected_languages="$all_selected_languages $lang_alias"
6126 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6127 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6139 . ${srcdir}/$gcc_subdir/config-lang.in
6140 if test "x$language" = x
6142 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6147 case ",$enable_languages," in
6150 for i in $subdir_requires; do
6151 test -f "${srcdir}/$i/config-lang.in" && continue
6159 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6160 if test -f $srcdir/$gcc_subdir/lang.opt; then
6161 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6162 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6164 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6165 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6167 all_languages="$all_languages $language"
6168 all_compilers="$all_compilers $compilers"
6169 all_outputs="$all_outputs $outputs"
6170 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6171 case ",$enable_languages," in
6173 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6175 AC_SUBST(enable_lto)
6182 for language in $all_selected_languages
6184 check_languages="$check_languages check-$language"
6187 # We link each language in with a set of hooks, reached indirectly via
6188 # lang.${target}. Only do so for selected languages.
6192 target_list="all.cross start.encap rest.encap tags \
6193 install-common install-man install-info install-pdf install-html dvi \
6194 pdf html uninstall info man srcextra srcman srcinfo \
6195 mostlyclean clean distclean maintainer-clean install-plugin"
6197 for t in $target_list
6200 for lang in $all_selected_languages
6204 echo "lang.$t: $x" >> Make-hooks
6208 # Option include files
6211 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6212 option_includes="option-includes.mk"
6213 AC_SUBST_FILE(option_includes)
6221 echo "dir ." > .gdbinit
6222 echo "dir ${srcdir}" >> .gdbinit
6223 if test x$gdb_needs_out_file_path = xyes
6225 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6227 if test "x$subdirs" != x; then
6230 echo "dir ${srcdir}/$s" >> .gdbinit
6233 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6234 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6236 # Put a breakpoint on __asan_report_error to help with debugging buffer
6239 *-fsanitize=address*)
6240 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6244 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6245 AC_SUBST(gcc_tooldir)
6248 # Find a directory in which to install a shared libgcc.
6250 AC_ARG_ENABLE(version-specific-runtime-libs,
6251 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6252 [specify that runtime libraries should be
6253 installed in a compiler-specific directory])])
6255 # Substitute configuration variables
6258 AC_SUBST(all_compilers)
6259 AC_SUBST(all_gtfiles)
6260 AC_SUBST(all_lang_makefrags)
6261 AC_SUBST(all_languages)
6262 AC_SUBST(all_selected_languages)
6263 AC_SUBST(build_exeext)
6264 AC_SUBST(build_install_headers_dir)
6265 AC_SUBST(build_xm_file_list)
6266 AC_SUBST(build_xm_include_list)
6267 AC_SUBST(build_xm_defines)
6268 AC_SUBST(build_file_translate)
6269 AC_SUBST(check_languages)
6270 AC_SUBST(cpp_install_dir)
6271 AC_SUBST(xmake_file)
6272 AC_SUBST(tmake_file)
6273 AC_SUBST(TM_ENDIAN_CONFIG)
6274 AC_SUBST(TM_MULTILIB_CONFIG)
6275 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6276 AC_SUBST(extra_gcc_objs)
6277 AC_SUBST(user_headers_inc_next_pre)
6278 AC_SUBST(user_headers_inc_next_post)
6279 AC_SUBST(extra_headers_list)
6280 AC_SUBST(extra_objs)
6281 AC_SUBST(extra_programs)
6282 AC_SUBST(float_h_file)
6283 AC_SUBST(gcc_config_arguments)
6284 AC_SUBST(gcc_gxx_include_dir)
6285 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6286 AC_SUBST(host_exeext)
6287 AC_SUBST(host_xm_file_list)
6288 AC_SUBST(host_xm_include_list)
6289 AC_SUBST(host_xm_defines)
6290 AC_SUBST(out_host_hook_obj)
6292 AC_SUBST(lang_opt_files)
6293 AC_SUBST(lang_specs_files)
6294 AC_SUBST(lang_tree_files)
6295 AC_SUBST(local_prefix)
6297 AC_SUBST(objc_boehm_gc)
6299 AC_SUBST(out_object_file)
6300 AC_SUBST(common_out_file)
6301 AC_SUBST(common_out_object_file)
6302 AC_SUBST(tm_file_list)
6303 AC_SUBST(tm_include_list)
6304 AC_SUBST(tm_defines)
6305 AC_SUBST(tm_p_file_list)
6306 AC_SUBST(tm_p_include_list)
6307 AC_SUBST(xm_file_list)
6308 AC_SUBST(xm_include_list)
6309 AC_SUBST(xm_defines)
6310 AC_SUBST(use_gcc_stdint)
6311 AC_SUBST(c_target_objs)
6312 AC_SUBST(cxx_target_objs)
6313 AC_SUBST(fortran_target_objs)
6314 AC_SUBST(target_cpu_default)
6316 AC_SUBST_FILE(language_hooks)
6319 if test x${build} = x${host} ; then
6320 if test x${host} = x${target} ; then
6321 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6323 echo "Links are now set up to build a cross-compiler" 1>&2
6324 echo " from ${host} to ${target}." 1>&2
6327 if test x${host} = x${target} ; then
6328 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6329 echo " for ${target}." 1>&2
6331 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6332 echo " from ${host} to ${target}." 1>&2
6336 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6337 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6339 AC_ARG_VAR(ISLLIBS,[How to link isl])
6340 AC_ARG_VAR(ISLINC,[How to find isl include files])
6341 if test "x${ISLLIBS}" != "x" ; then
6342 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6346 AC_SUBST(pluginlibs)
6347 AC_SUBST(enable_plugin)
6348 if test x"$enable_plugin" = x"yes"; then
6349 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6353 # Enable --enable-host-shared
6354 AC_ARG_ENABLE(host-shared,
6355 [AS_HELP_STRING([--enable-host-shared],
6356 [build host code as shared libraries])],
6357 [PICFLAG=-fPIC], [PICFLAG=])
6358 AC_SUBST(enable_host_shared)
6362 AC_ARG_ENABLE(libquadmath-support,
6363 [AS_HELP_STRING([--disable-libquadmath-support],
6364 [disable libquadmath support for Fortran])],
6365 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6366 ENABLE_LIBQUADMATH_SUPPORT=yes)
6367 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6368 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6369 [Define to 1 to enable libquadmath support])
6373 # Specify what hash style to use by default.
6374 AC_ARG_WITH([linker-hash-style],
6375 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6376 [specify the linker hash style])],
6377 [case x"$withval" in
6379 LINKER_HASH_STYLE=sysv
6382 LINKER_HASH_STYLE=gnu
6385 LINKER_HASH_STYLE=both
6388 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6391 [LINKER_HASH_STYLE=''])
6392 if test x"${LINKER_HASH_STYLE}" != x; then
6393 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6394 [The linker hash style])
6397 # Specify what should be the default of -fdiagnostics-color option.
6398 AC_ARG_WITH([diagnostics-color],
6399 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6400 [specify the default of -fdiagnostics-color option
6401 auto-if-env stands for -fdiagnostics-color=auto if
6402 GCC_COLOR environment variable is present and
6403 -fdiagnostics-color=never otherwise])],
6404 [case x"$withval" in
6406 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6409 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6412 DIAGNOSTICS_COLOR_DEFAULT=-1
6415 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6418 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6421 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6422 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6423 [The default for -fdiagnostics-color option])
6425 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6426 # of jit/jit-playback.c.
6427 cat > gcc-driver-name.h <<EOF
6428 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6431 # Check whether --enable-default-pie was given.
6432 AC_ARG_ENABLE(default-pie,
6433 [AS_HELP_STRING([--enable-default-pie],
6434 [enable Position Independent Executable as default])],
6435 enable_default_pie=$enableval,
6436 enable_default_pie=no)
6437 if test x$enable_default_pie = xyes ; then
6438 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6439 [Define if your target supports default PIE and it is enabled.])
6441 AC_SUBST([enable_default_pie])
6443 # Check if -fno-PIE works.
6444 AC_CACHE_CHECK([for -fno-PIE option],
6446 [saved_CXXFLAGS="$CXXFLAGS"
6447 CXXFLAGS="$CXXFLAGS -fno-PIE"
6448 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6449 [gcc_cv_c_no_fpie=yes],
6450 [gcc_cv_c_no_fpie=no])
6451 CXXFLAGS="$saved_CXXFLAGS"])
6452 if test "$gcc_cv_c_no_fpie" = "yes"; then
6453 NO_PIE_CFLAGS="-fno-PIE"
6455 AC_SUBST([NO_PIE_CFLAGS])
6457 # Check if -no-pie works.
6458 AC_CACHE_CHECK([for -no-pie option],
6460 [saved_LDFLAGS="$LDFLAGS"
6461 LDFLAGS="$LDFLAGS -no-pie"
6462 AC_LINK_IFELSE([int main(void) {return 0;}],
6463 [gcc_cv_no_pie=yes],
6465 LDFLAGS="$saved_LDFLAGS"])
6466 if test "$gcc_cv_no_pie" = "yes"; then
6467 NO_PIE_FLAG="-no-pie"
6469 AC_SUBST([NO_PIE_FLAG])
6471 # Check linker supports '-z bndplt'
6472 ld_bndplt_support=no
6473 AC_MSG_CHECKING(linker -z bndplt option)
6474 if test x"$ld_is_gold" = xno; then
6475 if test $in_tree_ld = yes ; then
6476 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6477 ld_bndplt_support=yes
6479 elif test x$gcc_cv_ld != x; then
6480 # Check if linker supports -a bndplt option
6481 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6482 ld_bndplt_support=yes
6486 if test x"$ld_bndplt_support" = xyes; then
6487 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6488 [Define if your linker supports -z bndplt])
6490 AC_MSG_RESULT($ld_bndplt_support)
6492 # Check linker supports '--push-state'/'--pop-state'
6493 ld_pushpopstate_support=no
6494 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6495 if test x"$ld_is_gold" = xno; then
6496 if test $in_tree_ld = yes ; then
6497 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6498 ld_pushpopstate_support=yes
6500 elif test x$gcc_cv_ld != x; then
6501 # Check if linker supports --push-state/--pop-state options
6502 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6503 ld_pushpopstate_support=yes
6507 if test x"$ld_pushpopstate_support" = xyes; then
6508 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6509 [Define if your linker supports --push-state/--pop-state])
6511 AC_MSG_RESULT($ld_pushpopstate_support)
6513 # Configure the subdirectories
6514 # AC_CONFIG_SUBDIRS($subdirs)
6516 # Create the Makefile
6517 # and configure language subdirectories
6518 AC_CONFIG_FILES($all_outputs)
6520 AC_CONFIG_COMMANDS([default],
6522 case ${CONFIG_HEADERS} in
6523 *auto-host.h:config.in*)
6526 # Make sure all the subdirs exist.
6527 for d in $subdirs doc build common c-family
6529 test -d $d || mkdir $d
6532 [subdirs='$subdirs'])