2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2016 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",
277 # With pre-defined ld
279 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
280 DEFAULT_LINKER="$with_ld")
281 if test x"${DEFAULT_LINKER+set}" = x"set"; then
282 if test ! -x "$DEFAULT_LINKER"; then
283 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
284 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
287 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
288 [Define to enable the use of a default linker.])
291 AC_MSG_CHECKING([whether a default linker was specified])
292 if test x"${DEFAULT_LINKER+set}" = x"set"; then
293 if test x"$gnu_ld_flag" = x"no"; then
294 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
296 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
302 # With demangler in GNU ld
303 AC_ARG_WITH(demangler-in-ld,
304 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
305 demangler_in_ld="$with_demangler_in_ld",
308 # ----------------------
309 # Find default assembler
310 # ----------------------
314 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
315 gas_flag="$with_gnu_as",
319 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
320 DEFAULT_ASSEMBLER="$with_as")
321 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
322 if test ! -x "$DEFAULT_ASSEMBLER"; then
323 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
324 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
327 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
328 [Define to enable the use of a default assembler.])
331 AC_MSG_CHECKING([whether a default assembler was specified])
332 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
333 if test x"$gas_flag" = x"no"; then
334 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
336 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
346 # If a non-executable a.out is present (e.g. created by GNU as above even if
347 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
348 # file, even when creating an executable, so an execution test fails.
349 # Remove possible default executable files to avoid this.
351 # FIXME: This really belongs into AC_PROG_CC and can be removed once
352 # Autoconf includes it.
353 rm -f a.out a.exe b.out
355 # Find the native compiler
358 ACX_PROG_GNAT([-I"$srcdir"/ada])
360 # Do configure tests with the C++ compiler, since that's what we build with.
363 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
364 # optimizations to be activated explicitly by the toplevel.
367 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
368 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
373 # Determine PICFLAG for target gnatlib.
374 GCC_PICFLAG_FOR_TARGET
375 AC_SUBST(PICFLAG_FOR_TARGET)
377 # -------------------------
378 # Check C compiler features
379 # -------------------------
381 AC_USE_SYSTEM_EXTENSIONS
387 # sizeof(char) is 1 by definition.
388 AC_CHECK_SIZEOF(void *)
389 AC_CHECK_SIZEOF(short)
391 AC_CHECK_SIZEOF(long)
392 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
394 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
395 AC_MSG_ERROR([uint64_t or int64_t not found])
398 # check what underlying integer type int64_t uses
399 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
400 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
404 template <typename T> struct X { };
406 struct X<long> { typedef long t; };
407 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
408 if test "$ac_cv_int64_t_type" = "long"; then
409 AC_DEFINE(INT64_T_IS_LONG, 1,
410 [Define if int64_t uses long as underlying type.])
412 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
416 template <typename T> struct X { };
418 struct X<long long> { typedef long long t; };
419 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
422 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
423 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
425 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
426 if test $ac_cv_std_swap_in_utility = yes; then
427 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
428 [Define if <utility> defines std::swap.])
431 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
432 # If the host compiler is affected by the bug, and we build with optimization
433 # enabled (which happens e.g. when cross-compiling), the pool allocator may
434 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
435 # Since there is no reliable feature check for the presence of this bug,
436 # we simply use a GCC version number check. (This should never trigger for
437 # stages 2 or 3 of a native bootstrap.)
439 if test "$GCC" = yes; then
440 saved_CXXFLAGS="$CXXFLAGS"
442 # The following test compilation will succeed if and only if $CXX accepts
443 # -fno-strict-aliasing *and* is older than GCC 4.3.
444 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
445 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
447 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
448 #error compiler not affected by placement new aliasing bug
451 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
452 [AC_MSG_RESULT([no])])
454 CXXFLAGS="$saved_CXXFLAGS"
456 AC_SUBST(aliasing_flags)
460 # ---------------------
461 # Warnings and checking
462 # ---------------------
464 # Check $CC warning features (if it's GCC).
465 # We want to use -pedantic, but we don't want warnings about
469 # * C++11 narrowing conversions in { }
470 # So, we only use -pedantic if we can disable those warnings.
472 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
473 AC_ARG_ENABLE(build-format-warnings,
474 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
475 [],[enable_build_format_warnings=yes])
476 AS_IF([test $enable_build_format_warnings = no],
477 [wf_opt=-Wno-format],[wf_opt=])
478 ACX_PROG_CXX_WARNING_OPTS(
479 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
480 [-Wcast-qual $wf_opt])), [loose_warn])
481 ACX_PROG_CC_WARNING_OPTS(
482 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
484 ACX_PROG_CXX_WARNING_OPTS(
485 m4_quote(m4_do([-Wmissing-format-attribute ],
486 [-Woverloaded-virtual])), [strict_warn])
487 ACX_PROG_CC_WARNING_OPTS(
488 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
489 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
490 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
491 [-Wno-overlength-strings])), [strict_warn])
492 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
494 # The above macros do nothing if the compiler is not GCC. However, the
495 # Makefile has more goo to add other flags, so these variables are used
496 # to enable warnings only for GCC.
499 if test "x$GCC" = "xyes"; then
500 warn_cflags='$(GCC_WARN_CFLAGS)'
501 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
503 AC_SUBST(warn_cflags)
504 AC_SUBST(warn_cxxflags)
506 # Disable exceptions and RTTI if building with g++
507 ACX_PROG_CC_WARNING_OPTS(
508 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
511 # Enable expensive internal checks
513 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
517 AC_ARG_ENABLE(checking,
518 [AS_HELP_STRING([[--enable-checking[=LIST]]],
519 [enable expensive run-time checks. With LIST,
520 enable only specific categories of checks.
521 Categories are: yes,no,all,none,release.
522 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
523 rtlflag,rtl,runtime,tree,valgrind,types])],
524 [ac_checking_flags="${enableval}"],[
525 # Determine the default checks.
526 if test x$is_release = x ; then
527 ac_checking_flags=yes,extra
529 ac_checking_flags=release
531 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
532 for check in release $ac_checking_flags
535 # these set all the flags to specific states
536 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
537 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
538 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
539 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
540 ac_tree_checking=1 ; ac_valgrind_checking= ;
541 ac_types_checking=1 ;;
542 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
543 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
544 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
545 ac_rtlflag_checking= ; ac_runtime_checking= ;
546 ac_tree_checking= ; ac_valgrind_checking= ;
547 ac_types_checking= ;;
548 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
549 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
550 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
551 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
552 ac_tree_checking=1 ; ac_valgrind_checking= ;
553 ac_types_checking=1 ;;
554 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
555 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
556 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
557 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
558 ac_tree_checking= ; ac_valgrind_checking= ;
559 ac_types_checking= ;;
560 # these enable particular checks
561 assert) ac_assert_checking=1 ;;
562 df) ac_df_checking=1 ;;
563 extra) ac_extra_checking=1 ;;
564 fold) ac_fold_checking=1 ;;
565 gc) ac_gc_checking=1 ;;
566 gcac) ac_gc_always_collect=1 ;;
567 gimple) ac_gimple_checking=1 ;;
568 misc) ac_checking=1 ;;
569 rtl) ac_rtl_checking=1 ;;
570 rtlflag) ac_rtlflag_checking=1 ;;
571 runtime) ac_runtime_checking=1 ;;
572 tree) ac_tree_checking=1 ;;
573 types) ac_types_checking=1 ;;
574 valgrind) ac_valgrind_checking=1 ;;
575 *) AC_MSG_ERROR(unknown check category $check) ;;
581 if test x$ac_checking != x ; then
582 AC_DEFINE(CHECKING_P, 1,
583 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
584 bag of miscellaneous but relatively cheap checks.])
585 nocommon_flag=-fno-common
587 AC_DEFINE(CHECKING_P, 0)
589 AC_SUBST(nocommon_flag)
590 if test x$ac_extra_checking != x ; then
591 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
592 [Define to 0/1 if you want extra run-time checking that might affect code
595 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
597 if test x$ac_df_checking != x ; then
598 AC_DEFINE(ENABLE_DF_CHECKING, 1,
599 [Define if you want more run-time sanity checks for dataflow.])
601 if test x$ac_assert_checking != x ; then
602 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
603 [Define if you want assertions enabled. This is a cheap check.])
605 if test x$ac_gimple_checking != x ; then
606 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
607 [Define if you want operations on GIMPLE (the basic data structure of
608 the high-level optimizers) to be checked for dynamic type safety at
609 runtime. This is moderately expensive.])
611 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
612 if test x$ac_runtime_checking != x ; then
613 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
614 [Define if you want runtime assertions enabled. This is a cheap check.])
616 if test x$ac_tree_checking != x ; then
617 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
618 [Define if you want all operations on trees (the basic data
619 structure of the front ends) to be checked for dynamic type safety
620 at runtime. This is moderately expensive.
624 if test x$ac_types_checking != x ; then
625 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
626 [Define if you want all gimple types to be verified after gimplifiation.
630 AC_SUBST(TREECHECKING)
631 if test x$ac_rtl_checking != x ; then
632 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
633 [Define if you want all operations on RTL (the basic data structure
634 of the optimizer and back end) to be checked for dynamic type safety
635 at runtime. This is quite expensive.])
637 if test x$ac_rtlflag_checking != x ; then
638 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
639 [Define if you want RTL flag accesses to be checked against the RTL
640 codes that are supported for each access macro. This is relatively
643 if test x$ac_gc_checking != x ; then
644 AC_DEFINE(ENABLE_GC_CHECKING, 1,
645 [Define if you want the garbage collector to do object poisoning and
646 other memory allocation checks. This is quite expensive.])
648 if test x$ac_gc_always_collect != x ; then
649 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
650 [Define if you want the garbage collector to operate in maximally
651 paranoid mode, validating the entire heap and collecting garbage at
652 every opportunity. This is extremely expensive.])
654 if test x$ac_fold_checking != x ; then
655 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
656 [Define if you want fold checked that it never destructs its argument.
657 This is quite expensive.])
659 valgrind_path_defines=
662 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
663 dnl # an if statement. This was the source of very frustrating bugs
664 dnl # in converting to autoconf 2.5x!
665 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
667 # It is certainly possible that there's valgrind but no valgrind.h.
668 # GCC relies on making annotations so we must have both.
669 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
670 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
671 [[#include <valgrind/memcheck.h>
672 #ifndef VALGRIND_DISCARD
673 #error VALGRIND_DISCARD not defined
675 [gcc_cv_header_valgrind_memcheck_h=yes],
676 [gcc_cv_header_valgrind_memcheck_h=no])
677 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
678 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
679 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
680 [[#include <memcheck.h>
681 #ifndef VALGRIND_DISCARD
682 #error VALGRIND_DISCARD not defined
684 [gcc_cv_header_memcheck_h=yes],
685 [gcc_cv_header_memcheck_h=no])
686 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
687 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
688 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
689 [Define if valgrind's valgrind/memcheck.h header is installed.])
691 if test $gcc_cv_header_memcheck_h = yes; then
692 AC_DEFINE(HAVE_MEMCHECK_H, 1,
693 [Define if valgrind's memcheck.h header is installed.])
696 if test x$ac_valgrind_checking != x ; then
697 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
698 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
699 if test "x$valgrind_path" = "x" \
700 || (test $have_valgrind_h = no \
701 && test $gcc_cv_header_memcheck_h = no \
702 && test $gcc_cv_header_valgrind_memcheck_h = no); then
703 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
705 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
706 valgrind_command="$valgrind_path -q"
707 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
708 [Define if you want to run subprograms and generated programs
709 through valgrind (a memory checker). This is extremely expensive.])
711 AC_SUBST(valgrind_path_defines)
712 AC_SUBST(valgrind_command)
714 # Enable code coverage collection
715 AC_ARG_ENABLE(coverage,
716 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
717 [enable compiler's code coverage collection.
718 Use to measure compiler performance and locate
719 unused parts of the compiler. With LEVEL, specify
720 optimization. Values are opt, noopt,
722 [case "${enableval}" in
724 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
727 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
730 # a.k.a. --disable-coverage
734 AC_MSG_ERROR(unknown coverage setting $enableval)
738 AC_SUBST(coverage_flags)
740 AC_ARG_ENABLE(gather-detailed-mem-stats,
741 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
742 [enable detailed memory allocation stats gathering])], [],
743 [enable_gather_detailed_mem_stats=no])
744 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
745 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
746 [Define to enable detailed memory allocation stats gathering.])
748 AC_ARG_ENABLE(valgrind-annotations,
749 [AS_HELP_STRING([--enable-valgrind-annotations],
750 [enable valgrind runtime interaction])], [],
751 [enable_valgrind_annotations=no])
752 if test x$enable_valgrind_annotations != xno \
753 || test x$ac_valgrind_checking != x; then
754 if (test $have_valgrind_h = no \
755 && test $gcc_cv_header_memcheck_h = no \
756 && test $gcc_cv_header_valgrind_memcheck_h = no); then
757 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
759 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
760 [Define to get calls to the valgrind runtime enabled.])
763 # -------------------------------
764 # Miscenalleous configure options
765 # -------------------------------
769 [AS_HELP_STRING([--with-stabs],
770 [arrange to use stabs instead of host debug format])],
774 # Determine whether or not multilibs are enabled.
775 AC_ARG_ENABLE(multilib,
776 [AS_HELP_STRING([--enable-multilib],
777 [enable library support for multiple ABIs])],
778 [], [enable_multilib=yes])
779 AC_SUBST(enable_multilib)
781 # Determine whether or not multiarch is enabled.
782 AC_ARG_ENABLE(multiarch,
783 [AS_HELP_STRING([--enable-multiarch],
784 [enable support for multiarch paths])],
785 [case "${enableval}" in
786 yes|no|auto) enable_multiarch=$enableval;;
787 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
788 esac], [enable_multiarch=auto])
789 if test x${enable_multiarch} = xauto; then
790 if test x${with_native_system_header_dir} != x; then
791 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
794 if test x$host != x$target && test "x$with_sysroot" = x; then
795 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
799 AC_MSG_CHECKING(for multiarch configuration)
800 AC_SUBST(enable_multiarch)
801 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
803 # needed for setting the multiarch name for soft-float/hard-float ABIs
807 # Enable __cxa_atexit for C++.
808 AC_ARG_ENABLE(__cxa_atexit,
809 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
812 # Enable C extension for decimal float if target supports it.
813 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
815 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
816 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
817 [Define to 1 to enable decimal float extension to C.])
819 # Use default_decimal_float for dependency.
820 enable_decimal_float=$default_decimal_float
822 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
824 [Define to 1 to specify that we are using the BID decimal floating
825 point format instead of DPD])
827 # Enable C extension for fixed-point arithmetic.
828 AC_ARG_ENABLE(fixed-point,
829 [AS_HELP_STRING([--enable-fixed-point],
830 [enable fixed-point arithmetic extension to C])],
835 enable_fixed_point=yes
839 enable_fixed_point=yes
842 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
843 enable_fixed_point=no
847 AC_SUBST(enable_fixed_point)
849 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
850 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
851 [Define to 1 to enable fixed-point arithmetic extension to C.])
854 # Pass with no value to take the default
855 # Pass with a value to specify a thread package
856 AC_ARG_ENABLE(threads,
857 [AS_HELP_STRING([[--enable-threads[=LIB]]],
858 [enable thread usage for target GCC,
859 using LIB thread package])],,
863 [AS_HELP_STRING([--enable-tls],
864 [enable or disable generation of tls code
865 overriding the assembler check for tls support])],
869 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
870 Valid choices are 'yes' and 'no'.]) ;;
874 AC_ARG_ENABLE(vtable-verify,
875 [AS_HELP_STRING([--enable-vtable-verify],
876 [enable vtable verification feature])],,
877 [enable_vtable_verify=no])
878 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
879 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
880 [Define 0/1 if vtable verification feature is enabled.])
882 AC_ARG_ENABLE(objc-gc,
883 [AS_HELP_STRING([--enable-objc-gc],
884 [enable the use of Boehm's garbage collector with
885 the GNU Objective-C runtime])],
886 if test x$enable_objc_gc = xno; then
894 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
895 dwarf2="$with_dwarf2",
898 AC_ARG_ENABLE(shared,
899 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
901 case $enable_shared in
905 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
906 for pkg in $enableval; do
907 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
914 ], [enable_shared=yes])
915 AC_SUBST(enable_shared)
918 [AS_HELP_STRING([--with-specs=SPECS],
919 [add SPECS to driver command-line processing])],
920 [CONFIGURE_SPECS=$withval],
923 AC_SUBST(CONFIGURE_SPECS)
925 ACX_PKGVERSION([GCC])
926 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
928 # Sanity check enable_languages in case someone does not run the toplevel
929 # configure # script.
930 AC_ARG_ENABLE(languages,
931 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
932 [case ,${enable_languages}, in
934 # go safe -- we cannot be much sure without the toplevel
936 # analysis of which target libs are present and usable
940 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
945 enable_languages=c,${enable_languages}
948 [enable_languages=c])
950 if test x"$enable_as_accelerator_for" != x; then
951 AC_DEFINE(ACCEL_COMPILER, 1,
952 [Define if this compiler should be built as the offload target compiler.])
953 enable_as_accelerator=yes
956 # In this case we expect offload compiler to be built as native, so we
957 # need to rename the driver to avoid clashes with host's drivers.
958 program_transform_name="s&^&${target}-&" ;;
960 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
961 program_transform_name=`echo $program_transform_name | sed $sedscript`
962 accel_dir_suffix=/accel/${target_noncanonical}
963 real_target_noncanonical=${enable_as_accelerator_for}
965 AC_SUBST(enable_as_accelerator)
966 AC_SUBST(real_target_noncanonical)
967 AC_SUBST(accel_dir_suffix)
969 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
970 tgt=`echo $tgt | sed 's/=.*//'`
972 if echo "$tgt" | grep "^hsa" > /dev/null ; then
978 if test x"$offload_targets" = x; then
981 offload_targets="$offload_targets,$tgt"
984 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
985 [Define to offload targets, separated by commas.])
986 if test x"$enable_offloading" != x; then
987 AC_DEFINE(ENABLE_OFFLOADING, 1,
988 [Define this to enable support for offloading.])
990 AC_DEFINE(ENABLE_OFFLOADING, 0,
991 [Define this to enable support for offloading.])
994 if test x"$enable_hsa" = x1 ; then
995 AC_DEFINE(ENABLE_HSA, 1,
996 [Define this to enable support for generating HSAIL.])
999 AC_ARG_WITH(multilib-list,
1000 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1002 with_multilib_list=default)
1004 # -------------------------
1005 # Checks for other programs
1006 # -------------------------
1010 # Find some useful tools
1012 # We need awk to create options.c and options.h.
1013 # Bail out if it's missing.
1015 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1022 AC_SUBST(ranlib_flags)
1026 # See if cmp has --ignore-initial.
1027 gcc_AC_PROG_CMP_IGNORE_INITIAL
1029 # See if we have the mktemp command.
1030 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1032 # See if makeinfo has been installed and is modern enough
1033 # that we can use it.
1034 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1035 [GNU texinfo.* \([0-9][0-9.]*\)],
1036 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1037 if test $gcc_cv_prog_makeinfo_modern = no; then
1039 *** Makeinfo is missing or too old.
1040 *** Info documentation will not be built.])
1045 AC_SUBST(BUILD_INFO)
1047 # Is pod2man recent enough to regenerate manpages?
1048 AC_MSG_CHECKING([for recent Pod::Man])
1049 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1051 GENERATED_MANPAGES=generated-manpages
1056 AC_SUBST(GENERATED_MANPAGES)
1058 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1061 dnl Don't use AC_PROG_LEX; we insist on flex.
1062 dnl LEXLIB is not useful in gcc.
1063 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1066 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1068 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1069 # check for build == host before using them.
1072 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1073 && test -d ../binutils ; then
1074 NM='${objdir}/../binutils/nm-new'
1076 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1080 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1081 && test -d ../binutils ; then
1082 AR='${objdir}/../binutils/ar'
1084 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1087 # The jit documentation looks better if built with sphinx, but can be
1088 # built with texinfo if sphinx is not available.
1089 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1090 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1092 # --------------------
1093 # Checks for C headers
1094 # --------------------
1096 # Need to reject headers which give warnings, so that the -Werror bootstrap
1097 # works later. *sigh* This needs to come before all header checks.
1104 AC_HEADER_TIOCGWINSZ
1105 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1106 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1107 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1108 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1110 # Check for thread headers.
1111 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1112 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1114 # These tests can't be done till we know if we have limits.h.
1118 # ----------------------
1119 # Checks for C++ headers
1120 # ----------------------
1122 dnl Autoconf will give an error in the configure script if there is no
1123 dnl C++ preprocessor. Hack to prevent that.
1124 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1126 m4_popdef([AC_MSG_ERROR])[]dnl
1128 AC_CHECK_HEADERS(unordered_map)
1129 AC_CHECK_HEADERS(tr1/unordered_map)
1130 AC_CHECK_HEADERS(ext/hash_map)
1133 # Dependency checking.
1137 AC_CONFIG_COMMANDS([gccdepdir],[
1138 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1139 for lang in $subdirs c-family common
1141 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1142 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1144 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1151 # These libraries may be used by collect2.
1152 # We may need a special search path to get them linked.
1153 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1155 for libs in '' -lld -lmld \
1156 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1157 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1160 AC_TRY_LINK_FUNC(ldopen,
1161 [gcc_cv_collect2_libs="$libs"; break])
1164 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1165 case $gcc_cv_collect2_libs in
1167 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1169 AC_SUBST(COLLECT2_LIBS)
1171 # When building Ada code on Alpha, we need exc_resume which is usually in
1172 # -lexc. So test for it.
1175 AC_SEARCH_LIBS(exc_resume, exc)
1178 AC_SUBST(GNAT_LIBEXC)
1180 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1183 AC_SEARCH_LIBS(kstat_open, kstat)
1184 EXTRA_GCC_LIBS="$LIBS"
1186 AC_SUBST(EXTRA_GCC_LIBS)
1188 # Some systems put ldexp and frexp in libm instead of libc; assume
1189 # they're both in the same place. jcf-dump needs them.
1192 AC_SEARCH_LIBS(ldexp, m)
1197 # Use <inttypes.h> only if it exists,
1198 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1200 AC_MSG_CHECKING(for inttypes.h)
1201 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1202 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1203 [[#define __STDC_FORMAT_MACROS
1204 #include <sys/types.h>
1205 #include <inttypes.h>]],
1210 [gcc_cv_header_inttypes_h=yes],
1211 [gcc_cv_header_inttypes_h=no])])
1212 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1213 if test $gcc_cv_header_inttypes_h = yes; then
1214 AC_DEFINE(HAVE_INTTYPES_H, 1,
1215 [Define if you have a working <inttypes.h> header file.])
1218 dnl Disabled until we have a complete test for buggy enum bitfields.
1219 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1221 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1222 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1223 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1224 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1225 putchar_unlocked putc_unlocked)
1226 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1227 popen sysconf strsignal getrusage nl_langinfo \
1228 gettimeofday mbstowcs wcswidth mmap setlocale \
1229 gcc_UNLOCKED_FUNCS madvise)
1231 if test x$ac_cv_func_mbstowcs = xyes; then
1232 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1233 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1239 [gcc_cv_func_mbstowcs_works=yes],
1240 [gcc_cv_func_mbstowcs_works=no],
1241 [gcc_cv_func_mbstowcs_works=yes])])
1242 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1243 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1244 [Define this macro if mbstowcs does not crash when its
1245 first argument is NULL.])
1249 AC_CHECK_TYPE(ssize_t, int)
1250 AC_CHECK_TYPE(caddr_t, char *)
1252 GCC_AC_FUNC_MMAP_BLACKLIST
1256 # Under VMS, vfork works very differently than on Unix. The standard test
1257 # won't work, and it isn't easily adaptable. It makes more sense to
1259 ac_cv_func_vfork_works=yes
1266 # Until we have in-tree GNU iconv:
1268 if test -f "$LTLIBICONV"; then
1269 LIBICONV_DEP=$LTLIBICONV
1271 AC_SUBST(LIBICONV_DEP)
1277 # We will need to find libiberty.h and ansidecl.h
1278 saved_CFLAGS="$CFLAGS"
1279 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1280 saved_CXXFLAGS="$CXXFLAGS"
1281 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1283 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1284 # normal autoconf function for these. But force definition of
1285 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1286 # basename handling in libiberty.h.
1287 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1288 #undef HAVE_DECL_BASENAME
1289 #define HAVE_DECL_BASENAME 1
1290 #include "ansidecl.h"
1291 #include "system.h"])
1293 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1294 madvise stpcpy strnlen strsignal strverscmp \
1295 strtol strtoul strtoll strtoull setenv unsetenv \
1296 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1297 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1298 #include "ansidecl.h"
1299 #include "system.h"])
1301 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1302 #include "ansidecl.h"
1304 #ifdef HAVE_SYS_RESOURCE_H
1305 #include <sys/resource.h>
1309 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1310 #include "ansidecl.h"
1312 #ifdef HAVE_SYS_RESOURCE_H
1313 #include <sys/resource.h>
1315 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1316 [Define to `long' if <sys/resource.h> doesn't define.])])
1318 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1319 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1320 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1321 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1322 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1323 #include "ansidecl.h"
1332 gcc_AC_CHECK_DECLS(times, , ,[
1333 #include "ansidecl.h"
1335 #ifdef HAVE_SYS_TIMES_H
1336 #include <sys/times.h>
1340 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1341 #include "ansidecl.h"
1346 # More time-related stuff.
1347 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1348 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1349 #include "ansidecl.h"
1351 #ifdef HAVE_SYS_TIMES_H
1352 #include <sys/times.h>
1354 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1355 if test $ac_cv_struct_tms = yes; then
1356 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1357 [Define if <sys/times.h> defines struct tms.])
1360 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1361 # revisit after autoconf 2.50.
1362 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1363 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1364 #include "ansidecl.h"
1366 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1367 if test $gcc_cv_type_clock_t = yes; then
1368 AC_DEFINE(HAVE_CLOCK_T, 1,
1369 [Define if <time.h> defines clock_t.])
1372 # Check if F_SETLKW is supported by fcntl.
1373 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1374 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1375 #include <fcntl.h>]], [[
1381 return fcntl (1, F_SETLKW, &fl);]])],
1382 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1383 if test $ac_cv_f_setlkw = yes; then
1384 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1385 [Define if F_SETLKW supported by fcntl.])
1388 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1389 CFLAGS="$saved_CFLAGS"
1390 CXXFLAGS="$saved_CXXFLAGS"
1392 # mkdir takes a single argument on some systems.
1393 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1401 # With Setjmp/Longjmp based exception handling.
1402 AC_ARG_ENABLE(sjlj-exceptions,
1403 [AS_HELP_STRING([--enable-sjlj-exceptions],
1404 [arrange to use setjmp/longjmp exception handling])],
1407 if test $enableval != yes; then
1408 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1413 force_sjlj_exceptions=yes],
1416 force_sjlj_exceptions=yes
1420 force_sjlj_exceptions=yes
1424 force_sjlj_exceptions=no
1427 if test $force_sjlj_exceptions = yes; then
1428 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1429 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1430 [Define 0/1 to force the choice for exception handling model.])
1433 # --------------------------------------------------------
1434 # Build, host, and target specific configuration fragments
1435 # --------------------------------------------------------
1437 # Collect build-machine-specific information.
1438 . ${srcdir}/config.build
1440 # Collect host-machine-specific information.
1441 . ${srcdir}/config.host
1445 # Collect target-machine-specific information.
1446 . ${srcdir}/config.gcc
1448 extra_objs="${host_extra_objs} ${extra_objs}"
1449 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1451 # Default the target-machine variables that were not explicitly set.
1452 if test x"$tm_file" = x
1453 then tm_file=$cpu_type/$cpu_type.h; fi
1455 if test x"$extra_headers" = x
1456 then extra_headers=; fi
1458 if test x$md_file = x
1459 then md_file=$cpu_type/$cpu_type.md; fi
1461 if test x$out_file = x
1462 then out_file=$cpu_type/$cpu_type.c; fi
1464 if test x"$tmake_file" = x
1465 then tmake_file=$cpu_type/t-$cpu_type
1468 # Support --enable-initfini-array.
1469 if test x$enable_initfini_array != xno; then
1470 tm_file="${tm_file} initfini-array.h"
1473 if test x"$dwarf2" = xyes
1474 then tm_file="$tm_file tm-dwarf2.h"
1477 # Say what files are being used for the output code and MD file.
1478 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1479 echo "Using \`$srcdir/config/$md_file' as machine description file."
1481 # If any of the xm_file variables contain nonexistent files, warn
1482 # about them and drop them.
1485 for x in $build_xm_file; do
1486 if test -f $srcdir/config/$x
1488 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1494 for x in $host_xm_file; do
1495 if test -f $srcdir/config/$x
1497 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1503 for x in $xm_file; do
1504 if test -f $srcdir/config/$x
1506 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1512 for f in $tm_file; do
1515 if test $count = ax; then
1516 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1518 echo "Using the following target machine macro files:"
1519 for f in $tm_file; do
1520 echo " $srcdir/config/$f"
1524 if test x$use_long_long_for_widest_fast_int = xyes; then
1525 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1526 [Define to 1 if the 'long long' type is wider than 'long' but still
1527 efficiently supported by the host hardware.])
1530 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1531 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1533 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1534 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1537 for f in $host_xm_file; do
1540 if test $count = a; then
1542 elif test $count = ax; then
1543 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1545 echo "Using the following host machine macro files:"
1546 for f in $host_xm_file; do
1547 echo " $srcdir/config/$f"
1550 echo "Using ${out_host_hook_obj} for host machine hooks."
1552 if test "$host_xm_file" != "$build_xm_file"; then
1554 for f in $build_xm_file; do
1557 if test $count = a; then
1559 elif test $count = ax; then
1560 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1562 echo "Using the following build machine macro files:"
1563 for f in $build_xm_file; do
1564 echo " $srcdir/config/$f"
1569 if test -n "$configured_native_system_header_dir"; then
1570 native_system_header_dir=$configured_native_system_header_dir
1572 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1573 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1577 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1578 gcc_cv_mcontext_underscores,
1580 #include <sys/cdefs.h>
1581 #include <sys/signal.h>
1582 #include <ucontext.h>
1583 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1585 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1586 if test $gcc_cv_mcontext_underscores = yes; then
1587 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1588 [mcontext_t fields start with __])
1597 # Check if a valid thread package
1598 case ${enable_threads} in
1601 target_thread_file='single'
1605 target_thread_file='single'
1607 aix | dce | lynx | mipssde | posix | rtems | \
1608 single | tpf | vxworks | win32)
1609 target_thread_file=${enable_threads}
1612 echo "${enable_threads} is an unknown thread package" 1>&2
1617 if test x${thread_file} = x; then
1618 # No thread file set by target-specific clauses in config.gcc,
1619 # so use file chosen by default logic above
1620 thread_file=${target_thread_file}
1628 if test x$enable___cxa_atexit = xyes || \
1629 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1630 if test x$host = x$target; then
1632 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1633 # keyed to flag_use_cxa_atexit
1641 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1642 [echo "__cxa_atexit can't be enabled on this target"])
1646 # We can't check for __cxa_atexit when building a cross, so assume
1650 if test x$use_cxa_atexit = xyes; then
1651 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1652 [Define if you want to use __cxa_atexit, rather than atexit, to
1653 register C++ destructors for local statics and global objects.
1654 This is essential for fully standards-compliant handling of
1655 destructors, but requires __cxa_atexit in libc.])
1659 # Look for a file containing extra machine modes.
1660 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1661 extra_modes_file='$(srcdir)'/config/${extra_modes}
1662 AC_SUBST(extra_modes_file)
1663 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1664 [Define to the name of a file containing a list of extra machine modes
1665 for this architecture.])
1668 # Convert extra_options into a form suitable for Makefile use.
1671 for f in $extra_options; do
1672 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1673 all_opt_files="$all_opt_files $srcdir/config/$f"
1675 AC_SUBST(extra_opt_files)
1677 # auto-host.h is the file containing items generated by autoconf and is
1678 # the first file included by config.h.
1679 # If host=build, it is correct to have bconfig include auto-host.h
1680 # as well. If host!=build, we are in error and need to do more
1681 # work to find out the build config parameters.
1682 if test x$host = x$build
1684 build_auto=auto-host.h
1686 # We create a subdir, then run autoconf in the subdir.
1687 # To prevent recursion we set host and build for the new
1688 # invocation of configure to the build for this invocation
1695 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1696 *) realsrcdir=../${srcdir};;
1698 # Clearing GMPINC is necessary to prevent host headers being
1699 # used by the build compiler. Defining GENERATOR_FILE stops
1700 # system.h from including gmp.h.
1701 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1702 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1703 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1704 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1705 ${realsrcdir}/configure \
1706 --enable-languages=${enable_languages-all} \
1707 --target=$target_alias --host=$build_alias --build=$build_alias
1709 # We just finished tests for the build machine, so rename
1710 # the file auto-build.h in the gcc directory.
1711 mv auto-host.h ../auto-build.h
1714 build_auto=auto-build.h
1716 AC_SUBST(build_subdir)
1718 tm_file="${tm_file} defaults.h"
1719 tm_p_file="${tm_p_file} tm-preds.h"
1720 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1721 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1722 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1723 # put this back in temporarily.
1724 xm_file="auto-host.h ansidecl.h ${xm_file}"
1731 # Compile in configure arguments.
1732 if test -f configargs.h ; then
1733 # Being re-configured.
1734 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1735 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1737 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1740 # Double all backslashes and backslash all quotes to turn
1741 # gcc_config_arguments into a C string.
1742 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1743 $gcc_config_arguments
1745 gcc_config_arguments_str=`cat conftest.out`
1748 cat > configargs.h <<EOF
1749 /* Generated automatically. */
1750 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1751 static const char thread_model[] = "$thread_file";
1753 static const struct {
1754 const char *name, *value;
1755 } configure_default_options[] = $configure_default_options;
1760 gcc_BASEVER=`cat $srcdir/BASE-VER`
1761 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1762 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1763 if test -f $srcdir/REVISION ; then
1764 gcc_REVISION=`cat $srcdir/REVISION`
1768 cat > plugin-version.h <<EOF
1769 #include "configargs.h"
1771 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1772 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1773 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1774 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1776 static char basever[] = "$gcc_BASEVER";
1777 static char datestamp[] = "$gcc_DATESTAMP";
1778 static char devphase[] = "$gcc_DEVPHASE";
1779 static char revision[] = "$gcc_REVISION";
1781 /* FIXME plugins: We should make the version information more precise.
1782 One way to do is to add a checksum. */
1784 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1786 configuration_arguments};
1790 # Internationalization
1791 ZW_GNU_GETTEXT_SISTER_DIR
1793 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1794 # -liconv on the link line twice.
1795 case "$LIBINTL" in *$LIBICONV*)
1799 AC_ARG_ENABLE(secureplt,
1800 [AS_HELP_STRING([--enable-secureplt],
1801 [enable -msecure-plt by default for PowerPC])],
1804 AC_ARG_ENABLE(leading-mingw64-underscores,
1805 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1806 [enable leading underscores on 64 bit mingw targets]),
1808 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1809 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1810 [Define if we should use leading underscore on 64 bit mingw targets])])
1813 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1816 AC_ARG_ENABLE(frame-pointer,
1817 [AS_HELP_STRING([--enable-frame-pointer],
1818 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1821 linux* | darwin[[8912]]*)
1822 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1824 enable_frame_pointer=no
1827 enable_frame_pointer=yes
1832 # Windows32 Registry support for specifying GCC installation paths.
1833 AC_ARG_ENABLE(win32-registry,
1834 [AS_HELP_STRING([--disable-win32-registry],
1835 [disable lookup of installation paths in the
1836 Registry on Windows hosts])
1837 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1838 AS_HELP_STRING([--enable-win32-registry=KEY],
1839 [use KEY instead of GCC version as the last portion
1840 of the registry key])],,)
1843 win32 | pe | cygwin* | mingw32*)
1844 if test "x$enable_win32_registry" != xno; then
1845 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1848 if test "x$enable_win32_registry" != xno; then
1849 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1850 [Define to 1 if installation paths should be looked up in the Windows
1851 Registry. Ignored on non-Windows hosts.])
1853 if test "x$enable_win32_registry" != xyes \
1854 && test "x$enable_win32_registry" != x; then
1855 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1856 [Define to be the last component of the Windows registry key under which
1857 to look for installation paths. The full key used will be
1858 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1859 The default is the GCC version number.])
1865 # Get an absolute path to the GCC top-level source directory
1866 holddir=`${PWDCMD-pwd}`
1868 topdir=`${PWDCMD-pwd}`
1871 # Conditionalize the makefile for this host machine.
1873 for f in ${host_xmake_file}
1875 if test -f ${srcdir}/config/$f
1877 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1881 # Conditionalize the makefile for this target machine.
1883 for f in ${tmake_file}
1885 if test -f ${srcdir}/config/$f
1887 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1890 tmake_file="${tmake_file_}"
1892 out_object_file=`basename $out_file .c`.o
1893 common_out_object_file=`basename $common_out_file .c`.o
1895 tm_file_list="options.h"
1896 tm_include_list="options.h insn-constants.h"
1897 for f in $tm_file; do
1900 f=`echo $f | sed 's/^..//'`
1901 tm_file_list="${tm_file_list} $f"
1902 tm_include_list="${tm_include_list} $f"
1905 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1906 tm_include_list="${tm_include_list} $f"
1909 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1910 tm_include_list="${tm_include_list} config/$f"
1917 for f in $tm_p_file; do
1920 tm_p_file_list="${tm_p_file_list} $f"
1921 tm_p_include_list="${tm_p_include_list} $f"
1924 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1925 tm_p_include_list="${tm_p_include_list} config/$f"
1931 for f in $xm_file; do
1934 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1935 xm_include_list="${xm_include_list} $f"
1938 xm_file_list="${xm_file_list} $f"
1939 xm_include_list="${xm_include_list} $f"
1942 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1943 xm_include_list="${xm_include_list} config/$f"
1949 host_xm_include_list=
1950 for f in $host_xm_file; do
1953 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1954 host_xm_include_list="${host_xm_include_list} $f"
1957 host_xm_file_list="${host_xm_file_list} $f"
1958 host_xm_include_list="${host_xm_include_list} $f"
1961 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1962 host_xm_include_list="${host_xm_include_list} config/$f"
1968 for f in $build_xm_file; do
1971 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1972 build_xm_include_list="${build_xm_include_list} $f"
1974 auto-build.h | auto-host.h )
1975 build_xm_file_list="${build_xm_file_list} $f"
1976 build_xm_include_list="${build_xm_include_list} $f"
1979 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1980 build_xm_include_list="${build_xm_include_list} config/$f"
1985 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1986 # cross-compiler which does not use the native headers and libraries.
1987 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1988 CROSS= AC_SUBST(CROSS)
1989 ALL=all.internal AC_SUBST(ALL)
1990 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1992 if test "x$with_build_sysroot" != x; then
1993 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1995 # This value is used, even on a native system, because
1996 # CROSS_SYSTEM_HEADER_DIR is just
1997 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1998 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
2001 if test x$host != x$target
2003 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2005 SYSTEM_HEADER_DIR=$build_system_header_dir
2006 case "$host","$target" in
2007 # Darwin crosses can use the host system's libraries and headers,
2008 # because of the fat library support. Of course, it must be the
2009 # same version of Darwin on both sides. Allow the user to
2010 # just say --target=foo-darwin without a version number to mean
2011 # "the version on this system".
2012 *-*-darwin*,*-*-darwin*)
2013 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2014 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2015 if test $hostos = $targetos -o $targetos = darwin ; then
2017 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2022 i?86-*-*,x86_64-*-* \
2023 | powerpc*-*-*,powerpc64*-*-*)
2024 CROSS="$CROSS -DNATIVE_CROSS" ;;
2029 if test "x$with_headers" = x; then
2036 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2037 SYSTEM_HEADER_DIR=$build_system_header_dir
2040 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2041 if test "x$with_headers" != x && test "x$with_headers" != xyes; then
2042 target_header_dir=$with_headers
2043 elif test "x$with_sysroot" = x; then
2044 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2045 elif test "x$with_build_sysroot" != "x"; then
2046 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2047 elif test "x$with_sysroot" = xyes; then
2048 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2050 target_header_dir="${with_sysroot}${native_system_header_dir}"
2053 target_header_dir=${native_system_header_dir}
2056 # If this is a cross-compiler that does not
2057 # have its own set of headers then define
2060 # If this is using newlib, without having the headers available now,
2061 # then define inhibit_libc in LIBGCC2_CFLAGS.
2062 # This prevents libgcc2 from containing any code which requires libc
2064 : ${inhibit_libc=false}
2065 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2066 test x$with_newlib = xyes ; } &&
2067 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2070 AC_SUBST(inhibit_libc)
2072 # When building gcc with a cross-compiler, we need to adjust things so
2073 # that the generator programs are still built with the native compiler.
2074 # Also, we cannot run fixincludes.
2076 # These are the normal (build=host) settings:
2077 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2078 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2079 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2080 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2081 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2082 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2084 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2085 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2087 # And these apply if build != host, or we are generating coverage data
2088 if test x$build != x$host || test "x$coverage_flags" != x
2090 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2091 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2092 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2094 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2095 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2096 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2097 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2099 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2100 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2102 # Expand extra_headers to include complete path.
2103 # This substitutes for lots of t-* files.
2105 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2106 for file in ${extra_headers} ; do
2107 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2110 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2111 if test x"$use_gcc_tgmath" = xyes
2112 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2115 # Define collect2 in Makefile.
2116 case $host_can_use_collect2 in
2118 *) collect2='collect2$(exeext)' ;;
2120 AC_SUBST([collect2])
2122 # Add a definition of USE_COLLECT2 if system wants one.
2123 case $use_collect2 in
2124 no) use_collect2= ;;
2127 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2128 xm_defines="${xm_defines} USE_COLLECT2"
2129 case $host_can_use_collect2 in
2131 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2137 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2138 [Define to the name of the LTO plugin DSO that must be
2139 passed to the linker's -plugin=LIB option.])
2141 # ---------------------------
2142 # Assembler & linker features
2143 # ---------------------------
2145 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2146 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2147 # However when ld-new is first executed from the build tree, libtool will
2148 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2149 # to the build tree. While doing this we need to use the previous-stage
2150 # linker, or we have an infinite loop. The presence of a shell script as
2151 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2152 # the gcc/collect-ld script. So we need to know how libtool works, or
2153 # exec-tool will fail.
2155 m4_defun([_LT_CONFIG_COMMANDS], [])
2158 AC_SUBST(enable_fast_install)
2160 # Identify the assembler which will work hand-in-glove with the newly
2161 # built GCC, so that we can examine its features. This is the assembler
2162 # which will be driven by the driver program.
2164 # If build != host, and we aren't building gas in-tree, we identify a
2165 # build->target assembler and hope that it will have the same features
2166 # as the host->target assembler we'll be using.
2167 gcc_cv_gas_major_version=
2168 gcc_cv_gas_minor_version=
2169 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2171 m4_pattern_allow([AS_FOR_TARGET])dnl
2172 AS_VAR_SET_IF(gcc_cv_as,, [
2173 if test -x "$DEFAULT_ASSEMBLER"; then
2174 gcc_cv_as="$DEFAULT_ASSEMBLER"
2175 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2176 && test -f ../gas/Makefile \
2177 && test x$build = x$host; then
2178 gcc_cv_as=../gas/as-new$build_exeext
2179 elif test -x as$build_exeext; then
2180 # Build using assembler in the current directory.
2181 gcc_cv_as=./as$build_exeext
2182 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2183 gcc_cv_as="$AS_FOR_TARGET"
2185 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2188 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2189 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2190 case "$ORIGINAL_AS_FOR_TARGET" in
2191 ./as | ./as$build_exeext) ;;
2192 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2195 AC_MSG_CHECKING(what assembler to use)
2196 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2197 # Single tree build which includes gas. We want to prefer it
2198 # over whatever linker top-level may have detected, since
2199 # we'll use what we're building after installation anyway.
2200 AC_MSG_RESULT(newly built gas)
2202 _gcc_COMPUTE_GAS_VERSION
2203 in_tree_gas_is_elf=no
2204 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2205 || (grep 'obj_format = multi' ../gas/Makefile \
2206 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2208 in_tree_gas_is_elf=yes
2211 AC_MSG_RESULT($gcc_cv_as)
2217 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2218 [case "${enableval}" in
2224 install_gold_as_default=no
2226 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2227 [case "${enableval}" in
2229 install_gold_as_default=yes
2232 if test x${default_ld} != x; then
2233 install_gold_as_default=yes
2239 AC_MSG_ERROR([invalid --enable-gold argument])
2243 # Identify the linker which will work hand-in-glove with the newly
2244 # built GCC, so that we can examine its features. This is the linker
2245 # which will be driven by the driver program.
2247 # If build != host, and we aren't building gas in-tree, we identify a
2248 # build->target linker and hope that it will have the same features
2249 # as the host->target linker we'll be using.
2250 gcc_cv_gld_major_version=
2251 gcc_cv_gld_minor_version=
2252 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2253 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2254 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2256 AS_VAR_SET_IF(gcc_cv_ld,, [
2257 if test -x "$DEFAULT_LINKER"; then
2258 gcc_cv_ld="$DEFAULT_LINKER"
2259 elif test $install_gold_as_default = yes \
2260 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2261 && test -f ../gold/Makefile \
2262 && test x$build = x$host; then
2263 gcc_cv_ld=../gold/ld-new$build_exeext
2264 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2265 && test -f ../ld/Makefile \
2266 && test x$build = x$host; then
2267 gcc_cv_ld=../ld/ld-new$build_exeext
2268 elif test -x collect-ld$build_exeext; then
2269 # Build using linker in the current directory.
2270 gcc_cv_ld=./collect-ld$build_exeext
2271 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2272 gcc_cv_ld="$LD_FOR_TARGET"
2274 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2277 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2278 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2279 # if the PLUGIN_LD is set ld-new, just have it as ld
2280 # as that is the installed named.
2281 if test x$PLUGIN_LD_SUFFIX = xld-new \
2282 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2285 AC_ARG_WITH(plugin-ld,
2286 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2287 [if test x"$withval" != x; then
2288 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2289 PLUGIN_LD_SUFFIX="$withval"
2291 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2292 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2294 # Check to see if we are using gold instead of ld
2295 AC_MSG_CHECKING(whether we are using gold)
2297 if test x$gcc_cv_ld != x; then
2298 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2299 | grep "GNU gold" > /dev/null; then
2303 AC_MSG_RESULT($ld_is_gold)
2305 AC_MSG_CHECKING(gold linker with split stack support as non default)
2306 # Check to see if default ld is not gold, but gold is
2307 # available and has support for split stack. If gcc was configured
2308 # with gold then no checking is done.
2310 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2312 # For platforms other than powerpc64*, enable as appropriate.
2315 ld_gold=`which ${gcc_cv_ld}.gold`
2316 # Make sure this gold has minimal split stack support
2317 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2318 ld_vers=`$ld_gold --version | sed 1q`
2319 gold_vers=`echo $ld_vers | sed -n \
2320 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2322 # check that the gold version contains the complete split stack support
2323 # on powerpc64 big and little endian
2325 case "$gold_vers" in
2326 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2328 *) gold_non_default=no
2334 if test $gold_non_default = yes; then
2335 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2336 [Define if the gold linker supports split stack and is available as a non-default])
2339 AC_MSG_RESULT($gold_non_default)
2341 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2342 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2343 case "$ORIGINAL_LD_FOR_TARGET" in
2344 ./collect-ld | ./collect-ld$build_exeext) ;;
2345 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2348 AC_MSG_CHECKING(what linker to use)
2349 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2350 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2351 # Single tree build which includes ld. We want to prefer it
2352 # over whatever linker top-level may have detected, since
2353 # we'll use what we're building after installation anyway.
2354 AC_MSG_RESULT(newly built ld)
2356 in_tree_ld_is_elf=no
2357 if (grep 'EMUL = .*elf' ../ld/Makefile \
2358 || grep 'EMUL = .*linux' ../ld/Makefile \
2359 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2360 in_tree_ld_is_elf=yes
2361 elif test "$ld_is_gold" = yes; then
2362 in_tree_ld_is_elf=yes
2364 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
2367 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2368 if test x$gcc_cv_gld_version != x; then
2372 case $gcc_cv_gld_version in
2375 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2378 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2379 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2381 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2382 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2384 AC_MSG_RESULT($gcc_cv_ld)
2386 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2387 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2388 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2391 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2392 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2394 # Figure out what nm we will be using.
2395 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2396 AS_VAR_SET_IF(gcc_cv_nm,, [
2397 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2398 && test -f ../binutils/Makefile \
2399 && test x$build = x$host; then
2400 gcc_cv_nm=../binutils/nm-new$build_exeext
2401 elif test -x nm$build_exeext; then
2402 gcc_cv_nm=./nm$build_exeext
2403 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2404 gcc_cv_nm="$NM_FOR_TARGET"
2406 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2409 AC_MSG_CHECKING(what nm to use)
2410 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2411 # Single tree build which includes binutils.
2412 AC_MSG_RESULT(newly built nm)
2415 AC_MSG_RESULT($gcc_cv_nm)
2419 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2420 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2421 case "$ORIGINAL_NM_FOR_TARGET" in
2422 ./nm | ./nm$build_exeext) ;;
2423 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2427 # Figure out what objdump we will be using.
2428 AS_VAR_SET_IF(gcc_cv_objdump,, [
2429 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2430 && test -f ../binutils/Makefile \
2431 && test x$build = x$host; then
2432 # Single tree build which includes binutils.
2433 gcc_cv_objdump=../binutils/objdump$build_exeext
2434 elif test -x objdump$build_exeext; then
2435 gcc_cv_objdump=./objdump$build_exeext
2436 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2437 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2439 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2442 AC_MSG_CHECKING(what objdump to use)
2443 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2444 # Single tree build which includes binutils.
2445 AC_MSG_RESULT(newly built objdump)
2446 elif test x$gcc_cv_objdump = x; then
2447 AC_MSG_RESULT(not found)
2449 AC_MSG_RESULT($gcc_cv_objdump)
2452 # Figure out what readelf we will be using.
2453 AS_VAR_SET_IF(gcc_cv_readelf,, [
2454 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2455 && test -f ../binutils/Makefile \
2456 && test x$build = x$host; then
2457 # Single tree build which includes binutils.
2458 gcc_cv_readelf=../binutils/readelf$build_exeext
2459 elif test -x readelf$build_exeext; then
2460 gcc_cv_readelf=./readelf$build_exeext
2461 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2462 gcc_cv_readelf="$READELF_FOR_TARGET"
2464 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2467 AC_MSG_CHECKING(what readelf to use)
2468 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2469 # Single tree build which includes binutils.
2470 AC_MSG_RESULT(newly built readelf)
2471 elif test x$gcc_cv_readelf = x; then
2472 AC_MSG_RESULT(not found)
2474 AC_MSG_RESULT($gcc_cv_readelf)
2477 # Figure out what assembler alignment features are present.
2478 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2482 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2483 [Define if your assembler supports .balign and .p2align.])])
2485 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2488 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2489 [Define if your assembler supports specifying the maximum number
2490 of bytes to skip when using the GAS .p2align command.])])
2492 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2495 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2496 [Define if your assembler supports .literal16.])])
2498 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2500 [conftest_label1: .word 0
2502 conftest_label2: .word 0
2504 [if test x$gcc_cv_nm != x; then
2505 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2506 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2507 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2509 else gcc_cv_as_subsection_m1=yes
2511 rm -f conftest.nm1 conftest.nm2
2513 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2514 [Define if your assembler supports .subsection and .subsection -1 starts
2515 emitting at the beginning of your section.])])
2517 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2520 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2522 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2524 [ .weakref foobar, barfnot],,
2525 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2527 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2530 .NSUBSPA $CODE$,COMDAT],,
2531 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2533 # .hidden needs to be supported in both the assembler and the linker,
2534 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2535 # This is irritatingly difficult to feature test for; we have to check the
2536 # date string after the version number. If we've got an in-tree
2537 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2539 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2540 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2546 # Darwin as has some visibility support, though with a different syntax.
2547 gcc_cv_as_hidden=yes
2551 # gnu_indirect_function type is an extension proposed at
2552 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2553 # selection of function implementation
2554 AC_ARG_ENABLE(gnu-indirect-function,
2555 [AS_HELP_STRING([--enable-gnu-indirect-function],
2556 [enable the use of the @gnu_indirect_function to glibc systems])],
2557 [case $enable_gnu_indirect_function in
2559 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2560 Valid choices are 'yes' and 'no'.]) ;;
2562 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2564 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2565 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2566 [Define if your system supports gnu indirect functions.])
2570 if test $in_tree_ld != yes ; then
2571 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2572 if echo "$ld_ver" | grep GNU > /dev/null; then
2573 if test x"$ld_is_gold" = xyes; then
2574 # GNU gold --version looks like this:
2576 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2578 # We extract the binutils version which is more familiar and specific
2579 # than the gold version.
2580 ld_vers=`echo $ld_ver | sed -n \
2581 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2583 # GNU ld --version looks like this:
2585 # GNU ld (GNU Binutils) 2.21.51.20110225
2586 ld_vers=`echo $ld_ver | sed -n \
2587 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2589 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2590 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2591 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2592 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2596 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2599 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2600 # /usr/ccs/bin/ld has been configured.
2601 ld_ver=`$gcc_cv_ld -V 2>&1`
2602 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2603 ld_vers=`echo $ld_ver | sed -n \
2604 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2605 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2606 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2614 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2615 [[if test $in_tree_ld = yes ; then
2617 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2618 && test $in_tree_ld_is_elf = yes; then
2619 gcc_cv_ld_hidden=yes
2622 gcc_cv_ld_hidden=yes
2623 if test x"$ld_is_gold" = xyes; then
2625 elif echo "$ld_ver" | grep GNU > /dev/null; then
2627 mmix-knuth-mmixware)
2628 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2632 if test 0"$ld_date" -lt 20020404; then
2633 if test -n "$ld_date"; then
2634 # If there was date string, but was earlier than 2002-04-04, fail
2636 elif test -z "$ld_vers"; then
2637 # If there was no date string nor ld version number, something is wrong
2640 test -z "$ld_vers_patch" && ld_vers_patch=0
2641 if test "$ld_vers_major" -lt 2; then
2643 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2644 gcc_cv_ld_hidden="no"
2645 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2653 # Darwin ld has some visibility support.
2654 gcc_cv_ld_hidden=yes
2656 hppa64*-*-hpux* | ia64*-*-hpux*)
2657 gcc_cv_ld_hidden=yes
2659 *-*-solaris2.1[0-9]*)
2660 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2661 # .symbolic was only added in Solaris 9 12/02.
2662 gcc_cv_ld_hidden=yes
2670 libgcc_visibility=no
2671 AC_SUBST(libgcc_visibility)
2672 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2673 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2674 libgcc_visibility=yes
2675 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2676 [Define if your assembler and linker support .hidden.])
2679 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2680 gcc_cv_ld_ro_rw_mix=unknown
2681 if test $in_tree_ld = yes ; then
2682 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2683 && test $in_tree_ld_is_elf = yes; then
2684 gcc_cv_ld_ro_rw_mix=read-write
2686 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2687 echo '.section myfoosect, "a"' > conftest1.s
2688 echo '.section myfoosect, "aw"' > conftest2.s
2689 echo '.byte 1' >> conftest2.s
2690 echo '.section myfoosect, "a"' > conftest3.s
2691 echo '.byte 0' >> conftest3.s
2692 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2693 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2694 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2695 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2696 conftest2.o conftest3.o > /dev/null 2>&1; then
2697 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2698 | sed -e '/myfoosect/!d' -e N`
2699 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2700 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2701 gcc_cv_ld_ro_rw_mix=read-only
2703 gcc_cv_ld_ro_rw_mix=read-write
2708 rm -f conftest.* conftest[123].*
2711 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2712 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2713 [Define if your linker links a mix of read-only
2714 and read-write sections into a read-write section.])
2716 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2718 gcc_AC_INITFINI_ARRAY
2720 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2721 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2729 [[# GAS versions before 2.11 do not support uleb128,
2730 # despite appearing to.
2731 # ??? There exists an elf-specific test that will crash
2732 # the assembler. Perhaps it's better to figure out whether
2733 # arbitrary sections are supported and try the test.
2734 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2735 if echo "$as_ver" | grep GNU > /dev/null; then
2736 as_vers=`echo $as_ver | sed -n \
2737 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2738 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2739 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2740 if test $as_major -eq 2 && test $as_minor -lt 11
2742 else gcc_cv_as_leb128=yes
2745 [AC_DEFINE(HAVE_AS_LEB128, 1,
2746 [Define if your assembler supports .sleb128 and .uleb128.])])
2748 # Check if we have assembler support for unwind directives.
2749 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2756 .cfi_escape 1, 2, 3, 4, 5
2760 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2761 # read-only and read-write sections, we need to make sure that the
2762 # assembler used emits read-write .eh_frame sections.
2763 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2764 if test "x$gcc_cv_objdump" != x; then
2765 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2766 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2767 gcc_cv_as_cfi_directive=no
2770 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2771 # On Solaris/x86, make sure that GCC and assembler agree on using
2772 # read-only .eh_frame sections for 64-bit.
2773 if test x$gas = xyes; then
2774 as_ix86_64_opt="--64"
2776 as_ix86_64_opt="-xarch=amd64"
2778 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2779 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2780 sed -e /.eh_frame/!d -e N | \
2781 grep READONLY > /dev/null; then
2782 gcc_cv_as_cfi_directive=yes
2784 gcc_cv_as_cfi_directive=no
2788 gcc_cv_as_cfi_directive=yes
2793 # no objdump, err on the side of caution
2794 gcc_cv_as_cfi_directive=no
2797 gcc_cv_as_cfi_directive=yes
2801 gcc_cv_as_cfi_directive=yes
2804 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2805 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2809 .cfi_adjust_cfa_offset 64
2811 .cfi_adjust_cfa_offset 128
2814 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2815 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2816 gcc_cv_as_cfi_advance_working=yes
2820 # no objdump, err on the side of caution
2821 gcc_cv_as_cfi_advance_working=no
2823 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2824 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2825 [`if test $gcc_cv_as_cfi_directive = yes \
2826 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2827 [Define 0/1 if your assembler supports CFI directives.])
2829 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2830 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2831 gcc_cv_as_cfi_personality_directive, ,,
2834 .cfi_personality 0, symbol
2836 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2837 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2838 then echo 1; else echo 0; fi`],
2839 [Define 0/1 if your assembler supports .cfi_personality.])
2841 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2842 gcc_cv_as_cfi_sections_directive, ,,
2844 .cfi_sections .debug_frame, .eh_frame
2848 win32 | pe | cygwin* | mingw32*)
2849 # Need to check that we generated the correct relocation for the
2850 # .debug_frame section. This was fixed for binutils 2.21.
2851 gcc_cv_as_cfi_sections_directive=no
2852 if test "x$gcc_cv_objdump" != x; then
2853 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2854 grep secrel > /dev/null; then
2855 gcc_cv_as_cfi_sections_directive=yes
2860 gcc_cv_as_cfi_sections_directive=yes
2863 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2864 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2865 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2866 then echo 1; else echo 0; fi`],
2867 [Define 0/1 if your assembler supports .cfi_sections.])
2869 # GAS versions up to and including 2.11.0 may mis-optimize
2871 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2879 .section .eh_frame,"aw",@progbits
2881 .4byte .LECIE1-.LSCIE1
2895 .4byte .LEFDE1-.LASFDE1
2897 .4byte .LASFDE1-__FRAME_BEGIN__
2905 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2906 cat > conftest.lit <<EOF
2907 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2908 0010 01000000 12000000 18000000 00000000 ................
2909 0020 08000000 04080000 0044 .........D @&t@
2911 cat > conftest.big <<EOF
2912 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2913 0010 00000001 00000012 00000018 00000000 ................
2914 0020 00000008 04000000 0844 .........D @&t@
2916 # If the assembler didn't choke, and we can objdump,
2917 # and we got the correct data, then succeed.
2918 # The text in the here-document typically retains its unix-style line
2919 # endings, while the output of objdump will use host line endings.
2920 # Therefore, use diff -b for the comparisons.
2921 if test x$gcc_cv_objdump != x \
2922 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2923 | tail -3 > conftest.got \
2924 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2925 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2927 gcc_cv_as_eh_frame=yes
2928 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2929 gcc_cv_as_eh_frame=buggy
2931 # Uh oh, what do we do now?
2932 gcc_cv_as_eh_frame=no
2935 if test $gcc_cv_as_eh_frame = buggy; then
2936 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2937 [Define if your assembler mis-optimizes .eh_frame data.])
2940 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2941 [elf,2,12,0], [--fatal-warnings],
2942 [.section .rodata.str, "aMS", @progbits, 1])
2943 if test $gcc_cv_as_shf_merge = no; then
2944 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2945 [elf,2,12,0], [--fatal-warnings],
2946 [.section .rodata.str, "aMS", %progbits, 1])
2948 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2949 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2950 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2952 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2953 [.stabs "gcc2_compiled.",60,0,0,0],,
2954 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2955 [Define if your assembler supports .stabs.])])
2957 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2958 gcc_cv_as_comdat_group,
2959 [elf,2,16,0], [--fatal-warnings],
2960 [.section .text,"axG",@progbits,.foo,comdat])
2961 if test $gcc_cv_as_comdat_group = yes; then
2962 gcc_cv_as_comdat_group_percent=no
2963 gcc_cv_as_comdat_group_group=no
2965 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2966 gcc_cv_as_comdat_group_percent,
2967 [elf,2,16,0], [--fatal-warnings],
2968 [.section .text,"axG",%progbits,.foo,comdat])
2969 if test $gcc_cv_as_comdat_group_percent = yes; then
2970 gcc_cv_as_comdat_group_group=no
2973 # Sun as uses a completely different syntax.
2978 .group foo,".text%foo",#comdat
2979 .section ".text%foo", #alloc,#execinstr,#progbits
2984 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2986 .group foo,.text%foo,#comdat
2987 .section .text%foo, "ax", @progbits
2993 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2994 gcc_cv_as_comdat_group_group,
2998 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2999 gcc_cv_as_comdat_group_group=no
3003 if test x"$ld_is_gold" = xyes; then
3005 elif test $in_tree_ld = yes ; then
3007 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3008 && test $in_tree_ld_is_elf = yes; then
3011 elif echo "$ld_ver" | grep GNU > /dev/null; then
3013 if test 0"$ld_date" -lt 20050308; then
3014 if test -n "$ld_date"; then
3015 # If there was date string, but was earlier than 2005-03-08, fail
3017 elif test "$ld_vers_major" -lt 2; then
3019 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3026 *-*-solaris2.1[1-9]*)
3028 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3029 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3032 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3033 # least ld version 1.2267.
3034 if test "$ld_vers_major" -gt 1; then
3036 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3038 elif test "$ld_vers_minor" -ge 2267; then
3043 # Assume linkers other than GNU ld don't support COMDAT group.
3049 # Allow overriding the automatic COMDAT group tests above.
3050 AC_ARG_ENABLE(comdat,
3051 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3052 [comdat_group="$enable_comdat"])
3053 if test $comdat_group = no; then
3054 gcc_cv_as_comdat_group=no
3055 gcc_cv_as_comdat_group_percent=no
3056 gcc_cv_as_comdat_group_group=no
3058 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3059 [`if test $gcc_cv_as_comdat_group = yes \
3060 || test $gcc_cv_as_comdat_group_percent = yes \
3061 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3062 [Define 0/1 if your assembler and linker support COMDAT groups.])
3064 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3065 gcc_cv_as_discriminator,
3069 .loc 1 1 0 discriminator 1],,
3070 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3071 [Define if your assembler supports the .loc discriminator sub-directive.])])
3073 # Thread-local storage - the check is heavily parameterized.
3082 .section ".tdata","awT",@progbits
3085 ldq $27,__tls_get_addr($29) !literal!1
3086 lda $16,foo($29) !tlsgd!1
3087 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3088 ldq $27,__tls_get_addr($29) !literal!2
3089 lda $16,foo($29) !tlsldm!2
3090 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3091 ldq $1,foo($29) !gotdtprel
3092 ldah $2,foo($29) !dtprelhi
3093 lda $3,foo($2) !dtprello
3094 lda $4,foo($29) !dtprel
3095 ldq $1,foo($29) !gottprel
3096 ldah $2,foo($29) !tprelhi
3097 lda $3,foo($2) !tprello
3098 lda $4,foo($29) !tprel'
3101 tls_as_opt=--fatal-warnings
3105 add_s r0,r0, @foo@tpoff'
3109 cris-*-*|crisv32-*-*)
3111 .section ".tdata","awT",@progbits
3118 tls_as_opt=--fatal-warnings
3122 .section ".tdata","awT",@progbits
3134 .section ".tdata","awT",@progbits
3138 addil LT%foo-$tls_gdidx$,gp
3139 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3142 addil LT%foo-$tls_ldidx$,gp
3144 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3145 addil LR%foo-$tls_dtpoff$,%ret0
3146 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3148 addil LT%foo-$tls_ieoff$,gp
3149 ldw RT%foo-$tls_ieoff$(%r1),%t2
3152 addil LR%foo-$tls_leoff$,%t1
3153 ldo RR%foo-$tls_leoff$(%r1),%t2'
3156 tls_as_opt=--fatal-warnings
3160 .section ".tdata","awT",%progbits
3171 i[34567]86-*-* | x86_64-*-*)
3173 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3180 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3182 .section .tdata,"awt",@progbits'
3187 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3188 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3192 .section ".tdata","awT",@progbits'
3196 tls_as_opt="--fatal-warnings"
3200 conftest_s="$conftest_s
3204 leal foo@tlsgd(,%ebx,1), %eax
3205 leal foo@tlsldm(%ebx), %eax
3206 leal foo@dtpoff(%eax), %edx
3207 movl foo@gottpoff(%ebx), %eax
3208 subl foo@gottpoff(%ebx), %eax
3209 addl foo@gotntpoff(%ebx), %eax
3210 movl foo@indntpoff, %eax
3211 movl \$foo@tpoff, %eax
3212 subl \$foo@tpoff, %eax
3213 leal foo@ntpoff(%ecx), %eax"
3216 if test x$on_solaris = xyes; then
3218 yes) tls_as_opt="$tls_as_opt --64" ;;
3219 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3222 conftest_s="$conftest_s
3226 leaq foo@tlsgd(%rip), %rdi
3227 leaq foo@tlsld(%rip), %rdi
3228 leaq foo@dtpoff(%rax), %rdx
3229 movq foo@gottpoff(%rip), %rax
3230 movq \$foo@tpoff, %rax"
3236 .section ".tdata","awT",@progbits
3239 addl r16 = @ltoff(@dtpmod(foo#)), gp
3240 addl r17 = @ltoff(@dtprel(foo#)), gp
3241 addl r18 = @ltoff(@tprel(foo#)), gp
3242 addl r19 = @dtprel(foo#), gp
3243 adds r21 = @dtprel(foo#), r13
3244 movl r23 = @dtprel(foo#)
3245 addl r20 = @tprel(foo#), gp
3246 adds r22 = @tprel(foo#), r13
3247 movl r24 = @tprel(foo#)'
3250 tls_as_opt=--fatal-warnings
3254 .section .tdata,"awT",@progbits
3258 addik r5,r20,x@TLSGD
3259 addik r5,r20,x@TLSLDM'
3262 tls_as_opt='--fatal-warnings'
3266 .section .tdata,"awT",@progbits
3270 addiu $4, $28, %tlsgd(x)
3271 addiu $4, $28, %tlsldm(x)
3272 lui $4, %dtprel_hi(x)
3273 addiu $4, $4, %dtprel_lo(x)
3274 lw $4, %gottprel(x)($28)
3275 lui $4, %tprel_hi(x)
3276 addiu $4, $4, %tprel_lo(x)'
3279 tls_as_opt='-32 --fatal-warnings'
3283 .section .tdata,"awT",@progbits
3288 move.l x@TLSGD(%a5),%a0
3289 move.l x@TLSLDM(%a5),%a0
3290 move.l x@TLSLDO(%a5),%a0
3291 move.l x@TLSIE(%a5),%a0
3292 move.l x@TLSLE(%a5),%a0'
3295 tls_as_opt='--fatal-warnings'
3299 .section ".tdata","awT",@progbits'
3302 tls_as_opt="--fatal-warnings"
3306 .section ".tdata","awT",%progbits
3310 add x0, x0, #:tlsgd_lo12:x
3315 tls_as_opt='--fatal-warnings'
3319 .extern __get_tpointer
3337 .section ".tdata","awT",@progbits
3345 addi 3,2,ld0@got@tlsgd
3351 addi 3,2,x1@got@tlsld
3357 addis 9,3,x2@dtprel@ha
3358 addi 9,9,x2@dtprel@l
3361 ld 9,x3@got@dtprel(2)
3367 tls_as_opt="-a64 --fatal-warnings"
3371 .section ".tdata","awT",@progbits
3379 addi 3,31,ld0@got@tlsgd
3381 addi 3,31,x1@got@tlsld
3384 addis 9,3,x2@dtprel@ha
3385 addi 9,9,x2@dtprel@l
3386 lwz 9,x3@got@tprel(31)
3389 addis 9,2,x2@tprel@ha
3390 addi 9,9,x2@tprel@l'
3393 tls_as_opt="-a32 --fatal-warnings"
3397 .section ".tdata","awT",@progbits
3406 l %r1,foo@GOTNTPOFF(%r12)
3407 l %r1,0(%r1):tls_load:foo
3408 bas %r14,0(%r1,%r13):tls_gdcall:foo
3409 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3412 tls_as_opt="-m31 --fatal-warnings"
3416 .section ".tdata","awT",@progbits
3424 lg %r1,foo@GOTNTPOFF(%r12)
3425 larl %r1,foo@INDNTPOFF
3426 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3427 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3430 tls_as_opt="-m64 -Aesame --fatal-warnings"
3432 sh-*-* | sh[123456789lbe]*-*-*)
3434 .section ".tdata","awT",@progbits
3444 tls_as_opt=--fatal-warnings
3448 sparc*-sun-solaris2.*)
3455 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3457 .section ".tdata",#alloc,#write,#tls'
3462 .section ".tdata","awT",@progbits'
3465 tls_as_opt="-32 --fatal-warnings"
3467 conftest_s="$conftest_s
3470 sethi %tgd_hi22(foo), %o0
3471 add %o0, %tgd_lo10(foo), %o1
3472 add %l7, %o1, %o0, %tgd_add(foo)
3473 call __tls_get_addr, %tgd_call(foo)
3474 sethi %tldm_hi22(foo), %l1
3475 add %l1, %tldm_lo10(foo), %l2
3476 add %l7, %l2, %o0, %tldm_add(foo)
3477 call __tls_get_addr, %tldm_call(foo)
3478 sethi %tldo_hix22(foo), %l3
3479 xor %l3, %tldo_lox10(foo), %l4
3480 add %o0, %l4, %l5, %tldo_add(foo)
3481 sethi %tie_hi22(foo), %o3
3482 add %o3, %tie_lo10(foo), %o3
3483 ld [%l7 + %o3], %o2, %tie_ld(foo)
3484 add %g7, %o2, %o4, %tie_add(foo)
3485 sethi %tle_hix22(foo), %l1
3486 xor %l1, %tle_lox10(foo), %o5
3487 ld [%g7 + %o5], %o1"
3491 .section ".tdata","awT",@progbits
3494 addli r0, zero, tls_gd(foo)
3495 auli r0, zero, tls_gd_ha16(foo)
3496 addli r0, r0, tls_gd_lo16(foo)
3498 addli r0, zero, tls_ie(foo)
3499 auli r0, r0, tls_ie_ha16(foo)
3500 addli r0, r0, tls_ie_lo16(foo)'
3503 tls_as_opt="--fatal-warnings"
3507 .section ".tdata","awT",@progbits
3510 shl16insli r0, zero, hw0_last_tls_gd(foo)
3511 shl16insli r0, zero, hw1_last_tls_gd(foo)
3512 shl16insli r0, r0, hw0_tls_gd(foo)
3514 shl16insli r0, zero, hw1_last_tls_ie(foo)
3515 shl16insli r0, r0, hw0_tls_ie(foo)'
3518 tls_as_opt="--fatal-warnings"
3522 .section ".tdata","awT",@progbits
3525 movi a8, foo@TLSFUNC
3526 movi a10, foo@TLSARG
3527 callx8.tls a8, foo@TLSCALL'
3534 if test "x$enable_tls" = xno ; then
3535 : # TLS explicitly disabled.
3536 elif test "x$enable_tls" = xyes ; then
3537 set_have_as_tls=yes # TLS explicitly enabled.
3538 elif test -z "$tls_first_major"; then
3539 : # If we don't have a check, assume no support.
3541 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3542 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3543 [set_have_as_tls=yes])
3545 if test $set_have_as_tls = yes ; then
3546 AC_DEFINE(HAVE_AS_TLS, 1,
3547 [Define if your assembler and linker support thread-local storage.])
3550 # Target-specific assembler checks.
3552 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3553 gcc_cv_ld_static_dynamic=no
3554 gcc_cv_ld_static_option='-Bstatic'
3555 gcc_cv_ld_dynamic_option='-Bdynamic'
3556 if test $in_tree_ld = yes ; then
3557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3558 gcc_cv_ld_static_dynamic=yes
3560 elif test x$gcc_cv_ld != x; then
3561 # Check if linker supports -Bstatic/-Bdynamic option
3562 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3563 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3564 gcc_cv_ld_static_dynamic=yes
3567 # AIX ld uses -b flags
3568 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3569 gcc_cv_ld_static_dynamic=yes
3570 gcc_cv_ld_static_option="-bstatic"
3571 gcc_cv_ld_dynamic_option="-bdynamic"
3573 # HP-UX ld uses -a flags to select between shared and archive.
3575 if test x"$gnu_ld" = xno; then
3576 gcc_cv_ld_static_dynamic=yes
3577 gcc_cv_ld_static_option="-aarchive_shared"
3578 gcc_cv_ld_dynamic_option="-adefault"
3581 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3583 gcc_cv_ld_static_dynamic=yes
3588 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3589 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3590 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3591 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3592 [Define to the linker option to disable use of shared objects.])
3593 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3594 [Define to the linker option to enable use of shared objects.])
3596 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3598 if test x"$demangler_in_ld" = xyes; then
3599 AC_MSG_CHECKING(linker --demangle support)
3600 gcc_cv_ld_demangle=no
3601 if test $in_tree_ld = yes; then
3602 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3603 gcc_cv_ld_demangle=yes
3605 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3606 # Check if the GNU linker supports --demangle option
3607 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3608 gcc_cv_ld_demangle=yes
3611 if test x"$gcc_cv_ld_demangle" = xyes; then
3612 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3613 [Define if your linker supports --demangle option.])
3615 AC_MSG_RESULT($gcc_cv_ld_demangle)
3618 AC_MSG_CHECKING(linker plugin support)
3620 if test -f liblto_plugin.la; then
3621 save_ld_ver="$ld_ver"
3622 save_ld_vers_major="$ld_vers_major"
3623 save_ld_vers_minor="$ld_vers_minor"
3624 save_ld_is_gold="$ld_is_gold"
3628 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3630 # FIXME: ld_is_gold?
3631 ld_vers_major="$gcc_cv_gld_major_version"
3632 ld_vers_minor="$gcc_cv_gld_minor_version"
3634 # Determine plugin linker version.
3635 # FIXME: Partial duplicate from above, generalize.
3637 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3638 if echo "$ld_ver" | grep GNU > /dev/null; then
3639 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3641 ld_vers=`echo $ld_ver | sed -n \
3642 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3644 ld_vers=`echo $ld_ver | sed -n \
3645 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3647 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3648 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3653 # Determine plugin support.
3654 if echo "$ld_ver" | grep GNU > /dev/null; then
3655 # Require GNU ld or gold 2.21+ for plugin support by default.
3656 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3658 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3659 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3664 ld_ver="$save_ld_ver"
3665 ld_vers_major="$save_ld_vers_major"
3666 ld_vers_minor="$save_ld_vers_minor"
3667 ld_is_gold="$save_ld_is_gold"
3669 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3670 [Define to the level of your linker's plugin support.])
3671 AC_MSG_RESULT($gcc_cv_lto_plugin)
3675 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3676 [-mabi=lp64], [.text],,,)
3677 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3678 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3679 [Define if your assembler supports the -mabi option.])
3681 if test x$with_abi = xilp32; then
3682 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3683 Upgrade the Assembler.])
3685 if test x"$with_multilib_list" = xdefault; then
3686 TM_MULTILIB_CONFIG=lp64
3688 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3689 for aarch64_multilib in ${aarch64_multilibs}; do
3690 case ${aarch64_multilib} in
3692 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3693 Upgrade the Assembler.])
3701 # Check if we have binutils support for relocations types needed by -fpic
3702 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3705 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3706 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3707 [Define if your assembler supports relocs needed by -fpic.])])
3708 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3709 AC_ARG_ENABLE(fix-cortex-a53-835769,
3711 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3712 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3713 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3714 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3719 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3724 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3725 Valid choices are 'yes' and 'no'.])
3731 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3732 AC_ARG_ENABLE(fix-cortex-a53-843419,
3734 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3735 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3736 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3737 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3742 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3747 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3748 Valid choices are 'yes' and 'no'.])
3756 # All TARGET_ABI_OSF targets.
3757 alpha*-*-linux* | alpha*-*-*bsd*)
3758 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3759 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3762 extbl $3, $2, $3 !lituse_bytoff!1
3763 ldq $2, a($29) !literal!1
3764 ldq $4, b($29) !literal!2
3765 ldq_u $3, 0($2) !lituse_base!1
3766 ldq $27, f($29) !literal!5
3767 jsr $26, ($27), f !lituse_jsr!5
3768 ldah $29, 0($26) !gpdisp!3
3769 lda $0, c($29) !gprel
3770 ldah $1, d($29) !gprelhigh
3771 lda $1, d($1) !gprellow
3772 lda $29, 0($29) !gpdisp!3],,
3773 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3774 [Define if your assembler supports explicit relocations.])])
3775 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3776 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3779 ldq $27, a($29) !literal!1
3780 jsr $26, ($27), a !lituse_jsrdirect!1],,
3781 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3782 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3786 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3787 [--mlink-relax], [.text],,
3788 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3789 [Define if your avr assembler supports --mlink-relax option.])])
3791 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3793 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3794 [Define if your avr assembler supports -mrmw option.])])
3798 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3799 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3800 [-no-mul-bug-abort], [.text],,
3801 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3802 [Define if your assembler supports the -no-mul-bug-abort option.])])
3806 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3807 [.register %g2, #scratch],,
3808 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3809 [Define if your assembler supports .register.])])
3811 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3813 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3814 [Define if your assembler supports -relax option.])])
3816 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3817 gcc_cv_as_sparc_gotdata_op,,
3824 sethi %gdop_hix22(foo), %g1
3825 xor %g1, %gdop_lox10(foo), %g1
3826 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3827 [if test x$gcc_cv_ld != x \
3828 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3829 if test x$gcc_cv_objdump != x; then
3830 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3831 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3832 gcc_cv_as_sparc_gotdata_op=no
3834 gcc_cv_as_sparc_gotdata_op=yes
3839 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3840 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3842 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3843 gcc_cv_as_sparc_ua_pcrel,,
3851 .uaword %r_disp32(foo)],
3852 [if test x$gcc_cv_ld != x \
3853 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3854 gcc_cv_as_sparc_ua_pcrel=yes
3857 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3858 [Define if your assembler and linker support unaligned PC relative relocs.])
3860 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3861 gcc_cv_as_sparc_ua_pcrel_hidden,,
3866 .uaword %r_disp32(foo)
3867 .byte 0x32, 0x33, 0x34
3872 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3873 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3874 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3875 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3876 if $gcc_cv_objdump -R conftest 2> /dev/null \
3877 | grep 'DISP32' > /dev/null 2>&1; then
3880 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3884 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3885 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3886 ]) # unaligned pcrel relocs
3888 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3889 gcc_cv_as_sparc_offsetable_lo10,,
3892 or %g1, %lo(ab) + 12, %g1
3893 or %g1, %lo(ab + 12), %g1],
3894 [if test x$gcc_cv_objdump != x \
3895 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3896 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3897 gcc_cv_as_sparc_offsetable_lo10=yes
3899 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3900 [Define if your assembler supports offsetable %lo().])])
3902 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3903 gcc_cv_as_sparc_fmaf,,
3906 .register %g2, #scratch
3907 .register %g3, #scratch
3909 fmaddd %f0, %f2, %f4, %f6
3910 addxccc %g1, %g2, %g3
3911 fsrl32 %f2, %f4, %f8
3912 fnaddd %f10, %f12, %f14],,
3913 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3914 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3916 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3917 gcc_cv_as_sparc_sparc4,,
3920 .register %g2, #scratch
3921 .register %g3, #scratch
3924 1: cwbneg %g2, %g3, 1f
3927 aes_kexpand0 %f4, %f6, %f8
3928 des_round %f38, %f40, %f42, %f44
3929 camellia_f %f54, %f56, %f58, %f60
3930 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3931 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3932 [Define if your assembler supports SPARC4 instructions.])])
3934 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3935 gcc_cv_as_sparc_sparc5,,
3938 .register %g2, #scratch
3939 .register %g3, #scratch
3942 fpadd8 %f0, %f2, %f4],,
3943 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3944 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3946 gcc_GAS_CHECK_FEATURE([LEON instructions],
3947 gcc_cv_as_sparc_leon,,
3950 .register %g2, #scratch
3951 .register %g3, #scratch
3955 casa [[%g2]] 0xb, %g3, %g1],,
3956 [AC_DEFINE(HAVE_AS_LEON, 1,
3957 [Define if your assembler supports LEON instructions.])])
3961 i[34567]86-*-* | x86_64-*-*)
3965 # Full C++ conformance when using a shared libstdc++-v3 requires some
3966 # support from the Cygwin DLL, which in more recent versions exports
3967 # wrappers to aid in interposing and redirecting operators new, delete,
3968 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3969 # are configuring for a version of Cygwin that exports the wrappers.
3970 if test x$host = x$target && test x$host_cpu = xi686; then
3971 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3973 # Can't check presence of libc functions during cross-compile, so
3974 # we just have to assume we're building for an up-to-date target.
3975 gcc_ac_cygwin_dll_wrappers=yes
3977 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3978 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3979 [Define if you want to generate code by default that assumes that the
3980 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3983 cygwin* | pe | mingw32*)
3984 # Recent binutils allows the three-operand form of ".comm" on PE. This
3985 # definition is used unconditionally to initialise the default state of
3986 # the target option variable that governs usage of the feature.
3987 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3988 [2,19,52],,[.comm foo,1,32])
3989 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3990 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3991 [Define if your assembler supports specifying the alignment
3992 of objects allocated using the GAS .comm command.])
3993 # Used for DWARF 2 in PE
3994 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3995 gcc_cv_as_ix86_pe_secrel32,
4001 [if test x$gcc_cv_ld != x \
4002 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4003 gcc_cv_as_ix86_pe_secrel32=yes
4006 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4007 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4008 # Test if the assembler supports the extended form of the .section
4009 # directive that specifies section alignment. LTO support uses this,
4010 # but normally only after installation, so we warn but don't fail the
4011 # configure if LTO is enabled but the assembler does not support it.
4012 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4013 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4014 if test x$gcc_cv_as_section_has_align != xyes; then
4015 case ",$enable_languages," in
4017 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4024 # Test if the assembler supports the section flag 'e' for specifying
4025 # an excluded section.
4026 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4027 [2,22,51], [--fatal-warnings],
4030 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4031 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4032 [Define if your assembler supports specifying the section flag e.])
4034 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4035 gcc_cv_as_ix86_filds,,,
4036 [filds (%ebp); fists (%ebp)],,
4037 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4038 [Define if your assembler uses filds and fists mnemonics.])])
4040 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4041 gcc_cv_as_ix86_fildq,,,
4042 [fildq (%ebp); fistpq (%ebp)],,
4043 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4044 [Define if your assembler uses fildq and fistq mnemonics.])])
4046 gcc_GAS_CHECK_FEATURE([cmov syntax],
4047 gcc_cv_as_ix86_cmov_sun_syntax,,,
4048 [cmovl.l %edx, %eax],,
4049 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4050 [Define if your assembler supports the Sun syntax for cmov.])])
4052 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4053 gcc_cv_as_ix86_ffreep,,,
4055 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4056 [Define if your assembler supports the ffreep mnemonic.])])
4058 gcc_GAS_CHECK_FEATURE([.quad directive],
4059 gcc_cv_as_ix86_quad,,,
4061 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4062 [Define if your assembler supports the .quad directive.])])
4064 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4065 gcc_cv_as_ix86_sahf,,,
4068 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4069 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4071 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4072 gcc_cv_as_ix86_interunit_movq,,,
4076 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4077 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4078 [Define if your assembler supports interunit movq mnemonic.])
4080 gcc_GAS_CHECK_FEATURE([hle prefixes],
4081 gcc_cv_as_ix86_hle,,,
4082 [lock xacquire cmpxchg %esi, (%ecx)],,
4083 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4084 [Define if your assembler supports HLE prefixes.])])
4086 gcc_GAS_CHECK_FEATURE([swap suffix],
4087 gcc_cv_as_ix86_swap,,,
4088 [movl.s %esp, %ebp],,
4089 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4090 [Define if your assembler supports the swap suffix.])])
4092 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4093 gcc_cv_as_ix86_diff_sect_delta,,,
4101 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4102 [Define if your assembler supports the subtraction of symbols in different sections.])])
4104 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4105 gcc_cv_as_ix86_rep_lock_prefix,,,
4111 lock addl %edi, (%eax,%esi)
4112 lock orl $0, (%esp)],,
4113 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4114 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4116 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4117 gcc_cv_as_ix86_ud2,,,
4119 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4120 [Define if your assembler supports the 'ud2' mnemonic.])])
4122 # Enforce 32-bit output with gas and gld.
4123 if test x$gas = xyes; then
4124 as_ix86_gas_32_opt="--32"
4126 if echo "$ld_ver" | grep GNU > /dev/null; then
4127 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4128 ld_ix86_gld_32_opt="-melf_i386_sol2"
4130 ld_ix86_gld_32_opt="-melf_i386"
4134 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4135 gcc_cv_as_ix86_tlsgdplt,,
4136 [$as_ix86_gas_32_opt],
4137 [call tls_gd@tlsgdplt],
4138 [if test x$gcc_cv_ld != x \
4139 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4140 gcc_cv_as_ix86_tlsgdplt=yes
4143 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4144 [Define if your assembler and linker support @tlsgdplt.])])
4147 .section .tdata,"aw'$tls_section_flag'",@progbits
4149 .section .text,"ax",@progbits
4150 call tls_ld@tlsldmplt'
4152 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4153 gcc_cv_as_ix86_tlsldmplt,,
4154 [$as_ix86_gas_32_opt],
4156 [if test x$gcc_cv_ld != x \
4157 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4158 gcc_cv_as_ix86_tlsldmplt=yes
4161 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4162 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4163 [Define to 1 if your assembler and linker support @tlsldmplt.])
4166 .section .text,"ax",@progbits
4168 .type _start, @function
4170 leal value@tlsldm(%ebx), %eax
4171 call ___tls_get_addr@plt
4173 .section .tdata,"aw'$tls_section_flag'",@progbits
4174 .type value, @object
4176 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4177 gcc_cv_as_ix86_tlsldm,,
4178 [$as_ix86_gas_32_opt],
4180 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4181 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4182 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4183 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4184 gcc_cv_as_ix86_tlsldm=yes
4188 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4189 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4190 [Define to 1 if your assembler and linker support @tlsldm.])
4201 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4202 gcc_cv_as_ix86_got32x,,
4203 [$as_ix86_gas_32_opt],
4205 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4206 && test x$gcc_cv_readelf != x \
4207 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4208 | grep R_386_GOT32X > /dev/null 2>&1 \
4209 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4210 if $gcc_cv_objdump -dw conftest 2>&1 \
4211 | grep 0xffffff > /dev/null 2>&1; then
4212 gcc_cv_as_ix86_got32x=no
4214 gcc_cv_as_ix86_got32x=yes
4218 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4219 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4220 [Define 0/1 if your assembler and linker support @GOT.])
4222 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4223 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4224 [$as_ix86_gas_32_opt],
4230 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4231 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4232 [Define true if the assembler supports '.long foo@GOTOFF'.])
4235 .section .text,"ax",@progbits
4237 .type _start, @function
4239 leal ld@tlsldm(%ecx), %eax
4240 call *___tls_get_addr@GOT(%ecx)
4241 leal gd@tlsgd(%ecx), %eax
4242 call *___tls_get_addr@GOT(%ecx)
4244 .section .tdata,"aw'$tls_section_flag'",@progbits
4252 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4253 gcc_cv_as_ix86_tls_get_addr_via_got,,
4254 [$as_ix86_gas_32_opt],
4256 [if test x$gcc_cv_ld != x \
4257 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4258 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4261 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4262 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4263 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4267 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4268 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4270 addl r15 = @ltoffx(x#), gp
4272 ld8.mov r16 = [[r15]], x#],,
4273 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4274 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4282 gcc_GAS_CHECK_FEATURE([.machine directive support],
4283 gcc_cv_as_machine_directive,,,
4284 [ .machine ppc7400])
4285 if test x$gcc_cv_as_machine_directive != xyes; then
4286 echo "*** This target requires an assembler supporting \".machine\"" >&2
4287 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4288 test x$build = x$target && exit 1
4294 *-*-aix*) conftest_s=' .machine "pwr5"
4297 *-*-darwin*) conftest_s=' .text
4299 *) conftest_s=' .machine power4
4304 gcc_GAS_CHECK_FEATURE([mfcr field support],
4305 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4307 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4308 [Define if your assembler supports mfcr field.])])
4311 *-*-aix*) conftest_s=' .machine "pwr5"
4314 *) conftest_s=' .machine power5
4319 gcc_GAS_CHECK_FEATURE([popcntb support],
4320 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4322 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4323 [Define if your assembler supports popcntb field.])])
4326 *-*-aix*) conftest_s=' .machine "pwr5x"
4329 *) conftest_s=' .machine power5
4334 gcc_GAS_CHECK_FEATURE([fp round support],
4335 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4337 [AC_DEFINE(HAVE_AS_FPRND, 1,
4338 [Define if your assembler supports fprnd.])])
4341 *-*-aix*) conftest_s=' .machine "pwr6"
4344 *) conftest_s=' .machine power6
4349 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4350 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4352 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4353 [Define if your assembler supports mffgpr and mftgpr.])])
4356 *-*-aix*) conftest_s=' .csect .text[[PR]]
4358 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4362 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4363 *) conftest_s=' .text
4365 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4368 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4369 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4371 [AC_DEFINE(HAVE_AS_REL16, 1,
4372 [Define if your assembler supports R_PPC_REL16 relocs.])])
4375 *-*-aix*) conftest_s=' .machine "pwr6"
4378 *) conftest_s=' .machine power6
4383 gcc_GAS_CHECK_FEATURE([compare bytes support],
4384 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4386 [AC_DEFINE(HAVE_AS_CMPB, 1,
4387 [Define if your assembler supports cmpb.])])
4390 *-*-aix*) conftest_s=' .machine "pwr6"
4393 *) conftest_s=' .machine power6
4398 gcc_GAS_CHECK_FEATURE([decimal float support],
4399 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4401 [AC_DEFINE(HAVE_AS_DFP, 1,
4402 [Define if your assembler supports DFP instructions.])])
4405 *-*-aix*) conftest_s=' .machine "pwr7"
4408 *) conftest_s=' .machine power7
4413 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4414 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4416 [AC_DEFINE(HAVE_AS_VSX, 1,
4417 [Define if your assembler supports VSX instructions.])])
4420 *-*-aix*) conftest_s=' .machine "pwr7"
4423 *) conftest_s=' .machine power7
4428 gcc_GAS_CHECK_FEATURE([popcntd support],
4429 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4431 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4432 [Define if your assembler supports POPCNTD instructions.])])
4435 *-*-aix*) conftest_s=' .machine "pwr8"
4436 .csect .text[[PR]]';;
4437 *) conftest_s=' .machine power8
4441 gcc_GAS_CHECK_FEATURE([power8 support],
4442 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4444 [AC_DEFINE(HAVE_AS_POWER8, 1,
4445 [Define if your assembler supports POWER8 instructions.])])
4448 *-*-aix*) conftest_s=' .machine "pwr9"
4449 .csect .text[[PR]]';;
4450 *) conftest_s=' .machine power9
4454 gcc_GAS_CHECK_FEATURE([power9 support],
4455 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4457 [AC_DEFINE(HAVE_AS_POWER9, 1,
4458 [Define if your assembler supports POWER9 instructions.])])
4461 *-*-aix*) conftest_s=' .csect .text[[PR]]
4463 *) conftest_s=' .text
4467 gcc_GAS_CHECK_FEATURE([lwsync support],
4468 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4470 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4471 [Define if your assembler supports LWSYNC instructions.])])
4474 *-*-aix*) conftest_s=' .machine "476"
4477 *) conftest_s=' .machine "476"
4482 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4483 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4485 [AC_DEFINE(HAVE_AS_DCI, 1,
4486 [Define if your assembler supports the DCI/ICI instructions.])])
4488 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4489 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4490 [.gnu_attribute 4,1],,
4491 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4492 [Define if your assembler supports .gnu_attribute.])])
4494 gcc_GAS_CHECK_FEATURE([tls marker support],
4495 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4496 [ bl __tls_get_addr(x@tlsgd)],,
4497 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4498 [Define if your assembler supports arg info for __tls_get_addr.])])
4500 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4501 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4502 [ .reloc .,R_PPC64_ENTRY; nop],,
4503 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4504 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4508 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4509 gcc_cv_as_aix_ref, [2,21,0],,
4510 [ .csect stuff[[rw]]
4516 [AC_DEFINE(HAVE_AS_REF, 1,
4517 [Define if your assembler supports .ref])])
4519 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4520 gcc_cv_as_aix_dwloc, [2,21,0],,
4525 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4526 [Define if your assembler supports AIX debug frame section label reference.])])
4532 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4533 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4534 [ lw $4,%gp_rel(foo)($4)],,
4535 [if test x$target_cpu_default = x
4536 then target_cpu_default=MASK_EXPLICIT_RELOCS
4537 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4540 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4541 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4542 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4543 [Define if the assembler understands -mno-shared.])])
4545 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4546 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4547 [.gnu_attribute 4,1],,
4548 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4549 [Define if your assembler supports .gnu_attribute.])])
4551 gcc_GAS_CHECK_FEATURE([.module support],
4552 gcc_cv_as_mips_dot_module,,[-32],
4555 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4556 [Define if your assembler supports .module.])])
4557 if test x$gcc_cv_as_mips_dot_module = xno \
4558 && test x$with_fp_32 != x; then
4560 [Requesting --with-fp-32= requires assembler support for .module.])
4563 gcc_GAS_CHECK_FEATURE([.micromips support],
4564 gcc_cv_as_micromips_support,,[--fatal-warnings],
4566 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4567 [Define if your assembler supports the .set micromips directive])])
4569 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4570 gcc_cv_as_mips_dtprelword, [2,18,0],,
4571 [.section .tdata,"awT",@progbits
4575 .dtprelword x+0x8000],,
4576 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4577 [Define if your assembler supports .dtprelword.])])
4579 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4580 gcc_cv_as_mips_dspr1_mult,,,
4590 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4591 [Define if your assembler supports DSPR1 mult.])])
4593 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4594 gcc_cv_as_ld_jalr_reloc=no
4595 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4596 if test $in_tree_ld = yes ; then
4597 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4598 && test $in_tree_ld_is_elf = yes; then
4599 gcc_cv_as_ld_jalr_reloc=yes
4601 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4602 echo ' .ent x' > conftest.s
4603 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4604 echo ' lw $25,%call16(y)($28)' >> conftest.s
4605 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4606 echo '1: jalr $25' >> conftest.s
4607 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4608 echo '1: jalr $25' >> conftest.s
4609 echo ' .end x' >> conftest.s
4610 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4611 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4612 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4613 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4614 gcc_cv_as_ld_jalr_reloc=yes
4620 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4621 if test x$target_cpu_default = x; then
4622 target_cpu_default=MASK_RELAX_PIC_CALLS
4624 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4627 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4629 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4630 [gcc_cv_ld_mips_personality_relaxation],
4631 [gcc_cv_ld_mips_personality_relaxation=no
4632 if test $in_tree_ld = yes ; then
4633 if test "$gcc_cv_gld_major_version" -eq 2 \
4634 -a "$gcc_cv_gld_minor_version" -ge 21 \
4635 -o "$gcc_cv_gld_major_version" -gt 2; then
4636 gcc_cv_ld_mips_personality_relaxation=yes
4638 elif test x$gcc_cv_as != x \
4639 -a x$gcc_cv_ld != x \
4640 -a x$gcc_cv_readelf != x ; then
4641 cat > conftest.s <<EOF
4643 .cfi_personality 0x80,indirect_ptr
4650 .section .data,"aw",@progbits
4654 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4655 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4656 if $gcc_cv_readelf -d conftest 2>&1 \
4657 | grep TEXTREL > /dev/null 2>&1; then
4659 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4660 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4663 gcc_cv_ld_mips_personality_relaxation=yes
4667 rm -f conftest.s conftest.o conftest])
4668 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4669 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4670 [Define if your linker can relax absolute .eh_frame personality
4671 pointers into PC-relative form.])
4674 gcc_GAS_CHECK_FEATURE([-mnan= support],
4675 gcc_cv_as_mips_nan,,
4677 [AC_DEFINE(HAVE_AS_NAN, 1,
4678 [Define if the assembler understands -mnan=.])])
4679 if test x$gcc_cv_as_mips_nan = xno \
4680 && test x$with_nan != x; then
4682 [Requesting --with-nan= requires assembler support for -mnan=])
4686 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4687 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4688 [.gnu_attribute 8,1],,
4689 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4690 [Define if your assembler supports .gnu_attribute.])])
4691 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4692 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4697 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4698 [Define if your assembler supports .machine and .machinemode.])])
4699 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4700 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4701 [ .machine z13+vx ],,
4702 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4703 [Define if your assembler supports architecture modifiers.])])
4707 # Mips and HP-UX need the GNU assembler.
4708 # Linux on IA64 might be able to use the Intel assembler.
4711 mips*-*-* | *-*-hpux* )
4712 if test x$gas_flag = xyes \
4713 || test x"$host" != x"$build" \
4714 || test ! -x "$gcc_cv_as" \
4715 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4718 echo "*** This configuration requires the GNU assembler" >&2
4724 # ??? Not all targets support dwarf2 debug_line, even within a version
4725 # of gas. Moreover, we need to emit a valid instruction to trigger any
4726 # info to the output file. So, as supported targets are added to gas 2.11,
4727 # add some instruction here to (also) show we expect this might work.
4728 # ??? Once 2.11 is released, probably need to add first known working
4729 # version to the per-target configury.
4731 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4732 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4733 | visium | xstormy16 | xtensa)
4743 if test x"$insn" != x; then
4745 .file 1 \"conftest.s\"
4748 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4749 gcc_cv_as_dwarf2_debug_line,
4750 [elf,2,11,0],, [$conftest_s],
4751 [if test x$gcc_cv_objdump != x \
4752 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4753 | grep debug_line > /dev/null 2>&1; then
4754 gcc_cv_as_dwarf2_debug_line=yes
4757 # The .debug_line file table must be in the exact order that
4758 # we specified the files, since these indices are also used
4759 # by DW_AT_decl_file. Approximate this test by testing if
4760 # the assembler bitches if the same index is assigned twice.
4761 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4762 gcc_cv_as_dwarf2_file_buggy,,,
4766 if test $gcc_cv_as_dwarf2_debug_line = yes \
4767 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4768 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4769 [Define if your assembler supports dwarf2 .file/.loc directives,
4770 and preserves file table indices exactly as given.])
4773 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4774 gcc_cv_as_gdwarf2_flag,
4775 [elf,2,11,0], [--gdwarf2], [$insn],,
4776 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4777 [Define if your assembler supports the --gdwarf2 option.])])
4779 gcc_GAS_CHECK_FEATURE([--gstabs option],
4780 gcc_cv_as_gstabs_flag,
4781 [elf,2,11,0], [--gstabs], [$insn],,
4782 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4783 [Define if your assembler supports the --gstabs option.])])
4785 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4786 gcc_cv_as_debug_prefix_map_flag,
4787 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4788 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4789 [Define if your assembler supports the --debug-prefix-map option.])])
4792 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4793 gcc_cv_as_compress_debug,,,,
4794 [# gas compiled without zlib cannot compress debug sections and warns
4795 # about it, but still exits successfully. So check for this, too.
4796 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4798 gcc_cv_as_compress_debug=0
4799 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4800 # defaulting to the ELF gABI format.
4801 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4803 gcc_cv_as_compress_debug=2
4804 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4805 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4806 # Before binutils 2.26, gas only supported --compress-debug-options and
4807 # emitted the traditional GNU format.
4808 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4810 gcc_cv_as_compress_debug=1
4811 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4812 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4814 gcc_cv_as_compress_debug=0
4816 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4817 [Define to the level of your assembler's compressed debug section support.])
4818 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4819 [Define to the assembler option to enable compressed debug sections.])
4820 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4821 [Define to the assembler option to disable compressed debug sections.])
4823 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4826 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4827 [Define if your assembler supports .lcomm with an alignment field.])])
4829 if test x$with_sysroot = x && test x$host = x$target \
4830 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4831 && test "$prefix" != "NONE"; then
4832 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4833 [Define to PREFIX/include if cpp should also search that directory.])
4836 # Determine the version of glibc, if any, used on the target.
4837 AC_MSG_CHECKING([for target glibc version])
4838 AC_ARG_WITH([glibc-version],
4839 [AS_HELP_STRING([--with-glibc-version=M.N],
4840 [assume GCC used with glibc version M.N or later])], [
4841 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4842 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4843 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4845 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4847 glibc_version_major=0
4848 glibc_version_minor=0
4849 [if test -f $target_header_dir/features.h \
4850 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4851 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4852 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4853 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4855 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4856 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4857 [GNU C Library major version number used on the target, or 0.])
4858 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4859 [GNU C Library minor version number used on the target, or 0.])
4861 AC_ARG_ENABLE(gnu-unique-object,
4862 [AS_HELP_STRING([--enable-gnu-unique-object],
4863 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4864 [case $enable_gnu_unique_object in
4866 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4867 Valid choices are 'yes' and 'no'.]) ;;
4869 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4871 [.type foo, '$target_type_format_char'gnu_unique_object],,
4872 # We need to unquote above to to use the definition from config.gcc.
4873 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4874 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4876 if test x$enable_gnu_unique_object = xyes; then
4877 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4878 [Define if your assembler supports @gnu_unique_object.])
4881 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4882 [gcc_cv_as_line_zero],
4883 [gcc_cv_as_line_zero=no
4884 if test $in_tree_gas = yes; then
4885 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4886 elif test "x$gcc_cv_as" != x; then
4887 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4888 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4889 test "x`cat conftest.out`" = x
4891 gcc_cv_as_line_zero=yes
4893 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4894 cat conftest.s >&AS_MESSAGE_LOG_FD
4895 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4896 cat conftest.out >&AS_MESSAGE_LOG_FD
4898 rm -f conftest.o conftest.s conftest.out
4900 if test "x$gcc_cv_as_line_zero" = xyes; then
4901 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4902 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4905 AC_MSG_CHECKING(support for thin archives)
4906 thin_archive_support=no
4907 echo 'int main (void) { return 0; }' > conftest.c
4908 if ($AR --version | sed 1q | grep "GNU ar" \
4909 && $CC $CFLAGS -c conftest.c \
4910 && $AR rcT conftest.a conftest.o \
4911 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
4912 thin_archive_support=yes
4914 rm -f conftest.c conftest.o conftest.a conftest
4915 AC_MSG_RESULT($thin_archive_support)
4916 AC_SUBST(thin_archive_support)
4918 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4919 gcc_cv_ld_eh_frame_hdr=no
4920 if test $in_tree_ld = yes ; then
4921 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4922 && test $in_tree_ld_is_elf = yes; then
4923 gcc_cv_ld_eh_frame_hdr=yes
4925 elif test x$gcc_cv_ld != x; then
4926 if echo "$ld_ver" | grep GNU > /dev/null; then
4927 # Check if linker supports --eh-frame-hdr option
4928 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4929 gcc_cv_ld_eh_frame_hdr=yes
4934 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4935 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4936 gcc_cv_ld_eh_frame_hdr=yes
4942 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4943 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4944 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4945 [Define if your linker supports .eh_frame_hdr.])
4947 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4949 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4950 gcc_cv_ld_eh_frame_ciev3=no
4951 if test $in_tree_ld = yes ; then
4952 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4953 && test $in_tree_ld_is_elf = yes; then
4954 gcc_cv_ld_eh_frame_ciev3=yes
4956 elif test x$gcc_cv_ld != x; then
4957 if echo "$ld_ver" | grep GNU > /dev/null; then
4958 gcc_cv_ld_eh_frame_ciev3=yes
4959 if test 0"$ld_date" -lt 20040513; then
4960 if test -n "$ld_date"; then
4961 # If there was date string, but was earlier than 2004-05-13, fail
4962 gcc_cv_ld_eh_frame_ciev3=no
4963 elif test "$ld_vers_major" -lt 2; then
4964 gcc_cv_ld_eh_frame_ciev3=no
4965 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4966 gcc_cv_ld_eh_frame_ciev3=no
4972 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4973 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4974 gcc_cv_ld_eh_frame_ciev3=yes
4980 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4981 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4982 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4983 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4985 AC_MSG_CHECKING(linker position independent executable support)
4987 if test $in_tree_ld = yes ; then
4989 # Full PIE support on Solaris was only introduced in gld 2.26.
4990 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4991 *) gcc_gld_pie_min_version=15 ;;
4993 if test "$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 \
4994 && test $in_tree_ld_is_elf = yes; then
4997 elif test x$gcc_cv_ld != x; then
4998 # Check if linker supports -pie option
4999 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
5003 if echo "$ld_ver" | grep GNU > /dev/null \
5004 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5011 *-*-solaris2.1[[1-9]]*)
5012 # Solaris 11.x and Solaris 12 added PIE support.
5013 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5020 if test x"$gcc_cv_ld_pie" = xyes; then
5021 AC_DEFINE(HAVE_LD_PIE, 1,
5022 [Define if your linker supports PIE option.])
5024 AC_MSG_RESULT($gcc_cv_ld_pie)
5026 AC_MSG_CHECKING(linker PIE support with copy reloc)
5027 gcc_cv_ld_pie_copyreloc=no
5028 if test $gcc_cv_ld_pie = yes ; then
5029 if test $in_tree_ld = yes ; then
5030 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5031 gcc_cv_ld_pie_copyreloc=yes
5033 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5034 # Check if linker supports -pie option with copy reloc
5036 i?86-*-linux* | x86_64-*-linux*)
5037 cat > conftest1.s <<EOF
5040 .type a_glob, @object
5045 cat > conftest2.s <<EOF
5048 .type main, @function
5050 movl %eax, a_glob(%rip)
5053 .section .data.rel,"aw",@progbits
5058 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5059 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5060 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5061 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5062 gcc_cv_ld_pie_copyreloc=yes
5064 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5069 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5070 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5071 [Define 0/1 if your linker supports -pie option with copy reloc.])
5072 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5074 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5075 gcc_cv_ld_eh_gc_sections=no
5076 if test $in_tree_ld = yes ; then
5077 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5078 && test $in_tree_ld_is_elf = yes; then
5079 gcc_cv_ld_eh_gc_sections=yes
5081 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5082 cat > conftest.s <<EOF
5085 .type _start, @function
5088 .size _start, .-_start
5089 .section .text.foo,"ax",@progbits
5090 .type foo, @function
5094 .section .gcc_except_table.foo,"a",@progbits
5097 .section .eh_frame,"a",@progbits
5100 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5101 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5102 | grep "gc-sections option ignored" > /dev/null; then
5103 gcc_cv_ld_eh_gc_sections=no
5104 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5105 | grep gcc_except_table > /dev/null; then
5106 gcc_cv_ld_eh_gc_sections=yes
5107 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5108 if test x$gcc_cv_as_comdat_group != xyes; then
5109 gcc_cv_ld_eh_gc_sections=no
5110 cat > conftest.s <<EOF
5113 .type _start, @function
5116 .size _start, .-_start
5117 .section .gnu.linkonce.t.foo,"ax",@progbits
5118 .type foo, @function
5122 .section .gcc_except_table.foo,"a",@progbits
5125 .section .eh_frame,"a",@progbits
5128 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5129 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5130 | grep "gc-sections option ignored" > /dev/null; then
5131 gcc_cv_ld_eh_gc_sections=no
5132 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5133 | grep gcc_except_table > /dev/null; then
5134 gcc_cv_ld_eh_gc_sections=yes
5140 rm -f conftest.s conftest.o conftest
5144 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5145 gcc_cv_ld_eh_gc_sections=no
5148 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5149 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5150 [Define if your linker supports garbage collection of
5151 sections in presence of EH frames.])
5153 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5155 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5156 gcc_cv_ld_eh_gc_sections_bug=no
5157 if test $in_tree_ld = yes ; then
5158 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5159 && test $in_tree_ld_is_elf = yes; then
5160 gcc_cv_ld_eh_gc_sections_bug=yes
5162 elif test x$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
5163 gcc_cv_ld_eh_gc_sections_bug=yes
5164 cat > conftest.s <<EOF
5167 .type _start, @function
5170 .size _start, .-_start
5171 .section .text.startup.foo,"ax",@progbits
5172 .type foo, @function
5176 .section .gcc_except_table.foo,"a",@progbits
5179 .section .eh_frame,"a",@progbits
5182 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5183 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5184 | grep "gc-sections option ignored" > /dev/null; then
5186 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5187 | grep gcc_except_table > /dev/null; then
5188 gcc_cv_ld_eh_gc_sections_bug=no
5191 rm -f conftest.s conftest.o conftest
5193 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5194 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5195 [Define if your linker has buggy garbage collection of
5196 sections support when .text.startup.foo like sections are used.])
5198 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5200 AC_MSG_CHECKING(linker for compressed debug sections)
5201 # gold/gld support compressed debug sections since binutils 2.19/2.21
5202 # In binutils 2.26, gld gained support for the ELF gABI format.
5203 if test $in_tree_ld = yes ; then
5204 gcc_cv_ld_compress_debug=0
5205 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5206 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5207 gcc_cv_ld_compress_debug=2
5208 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5209 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5210 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5211 gcc_cv_ld_compress_debug=3
5212 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5213 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5214 && test $in_tree_ld_is_elf = yes; then
5215 gcc_cv_ld_compress_debug=1
5217 elif echo "$ld_ver" | grep GNU > /dev/null; then
5218 if test "$ld_vers_major" -lt 2 \
5219 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5220 gcc_cv_ld_compress_debug=0
5221 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5222 gcc_cv_ld_compress_debug=1
5224 gcc_cv_ld_compress_debug=3
5225 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5227 if test $ld_is_gold = yes; then
5228 gcc_cv_ld_compress_debug=2
5229 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5235 # Introduced in Solaris 11.2.
5236 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5237 gcc_cv_ld_compress_debug=3
5238 gcc_cv_ld_compress_debug_option="-z compress-sections"
5240 gcc_cv_ld_compress_debug=0
5244 # Assume linkers other than GNU ld don't support compessed debug
5246 gcc_cv_ld_compress_debug=0
5251 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5252 [Define to the level of your linker's compressed debug section support.])
5253 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5254 [Define to the linker option to enable compressed debug sections.])
5255 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5261 AC_CACHE_CHECK(linker --as-needed support,
5262 gcc_cv_ld_as_needed,
5263 [gcc_cv_ld_as_needed=no
5264 gcc_cv_ld_as_needed_option='--as-needed'
5265 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5266 if test $in_tree_ld = yes ; then
5267 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5268 && test $in_tree_ld_is_elf = yes; then
5269 gcc_cv_ld_as_needed=yes
5271 elif test x$gcc_cv_ld != x; then
5272 # Check if linker supports --as-needed and --no-as-needed options
5273 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5274 gcc_cv_ld_as_needed=yes
5277 # Solaris 2 ld always supports -z ignore/-z record.
5279 gcc_cv_ld_as_needed=yes
5280 gcc_cv_ld_as_needed_option="-z ignore"
5281 gcc_cv_ld_no_as_needed_option="-z record"
5286 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5287 # dl_iterate_phdr, i.e. since Solaris 11.
5289 *-*-solaris2.1[[1-9]]*)
5291 i?86-*-* | x86_64-*-*)
5292 if echo "$ld_ver" | grep GNU > /dev/null; then
5293 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5294 gcc_cv_ld_as_needed=no
5300 gcc_cv_ld_as_needed=no
5304 if test x"$gcc_cv_ld_as_needed" = xyes; then
5305 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5306 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5307 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5308 [Define to the linker option to ignore unused dependencies.])
5309 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5310 [Define to the linker option to keep unused dependencies.])
5313 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5314 saved_LDFLAGS="$LDFLAGS"
5315 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5316 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5317 AC_LINK_IFELSE([int main(void) {return 0;}],
5318 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5320 LDFLAGS="$saved_LDFLAGS"
5321 if test "x$gcc_cv_ld_clearcap" = xyes; then
5322 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5323 [Define if the linker supports clearing hardware capabilities via mapfile.])
5324 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5326 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5332 emul_name="-melf32lppc"
5335 emul_name="-melf32ppc"
5338 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5340 [gcc_cv_ld_ppc_attr=no
5341 if test x"$ld_is_gold" = xyes; then
5342 gcc_cv_ld_ppc_attr=yes
5343 elif test $in_tree_ld = yes ; then
5344 if test "$gcc_cv_gld_major_version" -eq 2 \
5345 -a "$gcc_cv_gld_minor_version" -ge 28 \
5346 -o "$gcc_cv_gld_major_version" -gt 2; then
5347 gcc_cv_ld_ppc_attr=yes
5349 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5350 # check that merging the long double .gnu_attribute doesn't warn
5351 cat > conftest1.s <<EOF
5354 cat > conftest2.s <<EOF
5357 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5358 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5359 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5360 && test ! -s conftest.err; then
5361 gcc_cv_ld_ppc_attr=yes
5363 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5366 if test x$gcc_cv_ld_ppc_attr = xyes; then
5367 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5368 [Define if your PowerPC linker has .gnu.attributes long double support.])
5373 case "$target:$tm_file" in
5374 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5377 emul_name="-melf64lppc"
5380 emul_name="-melf64ppc"
5383 emul_name="-melf64ppc_fbsd"
5386 AC_CACHE_CHECK(linker support for omitting dot symbols,
5387 gcc_cv_ld_no_dot_syms,
5388 [gcc_cv_ld_no_dot_syms=no
5389 if test x"$ld_is_gold" = xyes; then
5390 gcc_cv_ld_no_dot_syms=yes
5391 elif test $in_tree_ld = yes ; then
5392 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5393 gcc_cv_ld_no_dot_syms=yes
5395 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5396 cat > conftest1.s <<EOF
5400 cat > conftest2.s <<EOF
5401 .section ".opd","aw"
5406 .quad .LEfoo,.TOC.@tocbase,0
5412 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5413 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5414 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5415 gcc_cv_ld_no_dot_syms=yes
5417 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5420 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5421 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5422 [Define if your PowerPC64 linker only needs function descriptor syms.])
5425 AC_CACHE_CHECK(linker large toc support,
5426 gcc_cv_ld_large_toc,
5427 [gcc_cv_ld_large_toc=no
5428 if test x"$ld_is_gold" = xyes; then
5429 gcc_cv_ld_large_toc=yes
5430 elif test $in_tree_ld = yes ; then
5431 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5432 gcc_cv_ld_large_toc=yes
5434 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5435 cat > conftest.s <<EOF
5436 .section ".tbss","awT",@nobits
5442 addis 9,13,ie0@got@tprel@ha
5443 ld 9,ie0@got@tprel@l(9)
5445 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5446 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5447 gcc_cv_ld_large_toc=yes
5449 rm -f conftest conftest.o conftest.s
5452 if test x"$gcc_cv_ld_large_toc" = xyes; then
5453 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5454 [Define if your PowerPC64 linker supports a large TOC.])
5457 AC_CACHE_CHECK(linker toc pointer alignment,
5458 gcc_cv_ld_toc_align,
5459 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5460 cat > conftest.s <<EOF
5465 .section .data.rel.ro,"aw",@progbits
5470 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5471 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5472 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5474 rm -f conftest conftest.o conftest.s
5477 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5478 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5479 [Define to .TOC. alignment forced by your linker.])
5486 AC_CACHE_CHECK(linker large toc support,
5487 gcc_cv_ld_large_toc,
5488 [gcc_cv_ld_large_toc=no
5489 if test x$gcc_cv_as != x ; then
5490 cat > conftest.s <<EOF
5500 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5501 gcc_cv_ld_large_toc=yes
5503 rm -f conftest conftest.o conftest.s
5506 if test x"$gcc_cv_ld_large_toc" = xyes; then
5507 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5508 [Define if your PowerPC64 linker supports a large TOC.])
5513 AC_CACHE_CHECK(linker --build-id support,
5515 [gcc_cv_ld_buildid=no
5516 if test $in_tree_ld = yes ; then
5517 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5518 "$gcc_cv_gld_minor_version" -ge 18 -o \
5519 "$gcc_cv_gld_major_version" -gt 2 \
5520 && test $in_tree_ld_is_elf = yes; then
5521 gcc_cv_ld_buildid=yes
5523 elif test x$gcc_cv_ld != x; then
5524 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5525 gcc_cv_ld_buildid=yes
5528 if test x"$gcc_cv_ld_buildid" = xyes; then
5529 AC_DEFINE(HAVE_LD_BUILDID, 1,
5530 [Define if your linker supports --build-id.])
5533 AC_ARG_ENABLE(linker-build-id,
5534 [AS_HELP_STRING([--enable-linker-build-id],
5535 [compiler will always pass --build-id to linker])],
5537 enable_linker_build_id=no)
5539 if test x"$enable_linker_build_id" = xyes; then
5540 if test x"$gcc_cv_ld_buildid" = xyes; then
5541 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5542 [Define if gcc should always pass --build-id to linker.])
5544 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5548 # In binutils 2.21, GNU ld gained support for new emulations fully
5549 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5550 AC_CACHE_CHECK(linker *_sol2 emulation support,
5551 gcc_cv_ld_sol2_emulation,
5552 [gcc_cv_ld_sol2_emulation=no
5553 if test $in_tree_ld = yes ; then
5554 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5555 "$gcc_cv_gld_minor_version" -ge 21 -o \
5556 "$gcc_cv_gld_major_version" -gt 2 \
5557 && test $in_tree_ld_is_elf = yes; then
5558 gcc_cv_ld_sol2_emulation=yes
5560 elif test x$gcc_cv_ld != x; then
5561 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5562 grep _sol2 > /dev/null; then
5563 gcc_cv_ld_sol2_emulation=yes
5566 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5567 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5568 [Define if your linker supports the *_sol2 emulations.])
5571 AC_CACHE_CHECK(linker --sysroot support,
5573 [gcc_cv_ld_sysroot=no
5574 if test $in_tree_ld = yes ; then
5575 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5576 gcc_cv_ld_sysroot=yes
5578 elif test x$gcc_cv_ld != x; then
5579 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5580 gcc_cv_ld_sysroot=yes
5583 if test x"$gcc_cv_ld_sysroot" = xyes; then
5584 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5585 [Define if your linker supports --sysroot.])
5590 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5591 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5592 gcc_cv_solaris_crts,
5593 [gcc_cv_solaris_crts=no
5594 if test x$host != x$target; then
5595 if test "x$with_sysroot" = xyes; then
5596 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5598 target_sysroot="${with_sysroot}"
5601 target_libdir="$target_sysroot/usr/lib"
5602 # At the time they were added, gcrt1.o became a symlink for backwards
5603 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5605 i?86-*-solaris2* | x86_64-*-solaris2*)
5606 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5609 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5614 if test x$gcc_cv_solaris_crts = xyes; then
5615 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5616 [Define if the system-provided CRTs are present on Solaris.])
5619 # Test for stack protector support in target C library.
5620 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5621 gcc_cv_libc_provides_ssp,
5622 [gcc_cv_libc_provides_ssp=no
5625 # All versions of musl provide stack protector
5626 gcc_cv_libc_provides_ssp=yes;;
5627 *-*-linux* | *-*-kfreebsd*-gnu)
5628 # glibc 2.4 and later provides __stack_chk_fail and
5629 # either __stack_chk_guard, or TLS access to stack guard canary.
5630 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5631 [if test -f $target_header_dir/features.h \
5632 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5633 $target_header_dir/features.h > /dev/null; then
5634 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5635 $target_header_dir/features.h > /dev/null && \
5636 test -f $target_header_dir/bits/uClibc_config.h && \
5637 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5638 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5639 gcc_cv_libc_provides_ssp=yes
5641 # all versions of Bionic support stack protector
5642 elif test -f $target_header_dir/sys/cdefs.h \
5643 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5644 $target_header_dir/sys/cdefs.h > /dev/null; then
5645 gcc_cv_libc_provides_ssp=yes
5649 # Avoid complicated tests (see
5650 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5651 # simply assert that glibc does provide this, which is true for all
5652 # realistically usable GNU/Hurd configurations.
5653 # All supported versions of musl provide it as well
5654 gcc_cv_libc_provides_ssp=yes;;
5655 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5656 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5657 [echo "no __stack_chk_fail on this target"])
5659 *) gcc_cv_libc_provides_ssp=no ;;
5662 if test x$gcc_cv_libc_provides_ssp = xyes; then
5663 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5664 [Define if your target C library provides stack protector support])
5667 # Check whether --enable-default-ssp was given.
5668 AC_ARG_ENABLE(default-ssp,
5669 [AS_HELP_STRING([--enable-default-ssp],
5670 [enable Stack Smashing Protection as default])],[
5671 if test x$gcc_cv_libc_provides_ssp = xyes; then
5673 ia64*-*-*) enable_default_ssp=no ;;
5674 *) enable_default_ssp=$enableval ;;
5677 enable_default_ssp=no
5679 enable_default_ssp=no)
5680 if test x$enable_default_ssp = xyes ; then
5681 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5682 [Define if your target supports default stack protector and it is enabled.])
5684 AC_SUBST([enable_default_ssp])
5686 # Test for <sys/sdt.h> on the target.
5687 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5688 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5690 if test -f $target_header_dir/sys/sdt.h; then
5692 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5693 [Define if your target C library provides sys/sdt.h])
5695 AC_MSG_RESULT($have_sys_sdt_h)
5697 # Check if TFmode long double should be used by default or not.
5698 # Some glibc targets used DFmode long double, but with glibc 2.4
5699 # and later they can use TFmode.
5701 powerpc*-*-linux* | \
5705 AC_ARG_WITH(long-double-128,
5706 [AS_HELP_STRING([--with-long-double-128],
5707 [use 128-bit long double by default])],
5708 gcc_cv_target_ldbl128="$with_long_double_128",
5709 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5710 [gcc_cv_target_ldbl128=no
5711 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5712 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5713 && gcc_cv_target_ldbl128=yes
5717 if test x$gcc_cv_target_ldbl128 = xyes; then
5718 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5719 [Define if TFmode long double should be the default])
5722 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5723 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5724 gcc_cv_libc_provides_hwcap_in_tcb=no
5727 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5730 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5731 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5732 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5735 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5736 gcc_cv_target_dl_iterate_phdr=unknown
5738 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5739 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5740 # libdl there, both complicating its use and breaking compatibility
5741 # between Solaris 10 updates.
5742 *-*-solaris2.1[[1-9]]*)
5743 # <link.h> needs both a dl_iterate_phdr declaration and support for
5744 # compilation with largefile support.
5745 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5746 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5747 gcc_cv_target_dl_iterate_phdr=yes
5749 gcc_cv_target_dl_iterate_phdr=no
5752 *-*-dragonfly* | *-*-freebsd*)
5753 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5754 gcc_cv_target_dl_iterate_phdr=yes
5756 gcc_cv_target_dl_iterate_phdr=no
5760 gcc_cv_target_dl_iterate_phdr=yes
5763 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5764 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5765 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5766 [Define if your target C library provides the `dl_iterate_phdr' function.])
5768 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5770 # We no longer support different GC mechanisms. Emit an error if
5771 # the user configures with --with-gc.
5773 [AS_HELP_STRING([--with-gc={page,zone}],
5774 [this option is not supported anymore. It used to choose
5775 the garbage collection mechanism to use with the compiler])],
5776 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5779 # Libraries to use on the host. This will normally be set by the top
5780 # level Makefile. Here we simply capture the value for our Makefile.
5781 if test -z "${HOST_LIBS+set}"; then
5786 # Use the system's zlib library.
5789 dnl Very limited version of automake's enable-maintainer-mode
5791 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5792 dnl maintainer-mode is disabled by default
5793 AC_ARG_ENABLE(maintainer-mode,
5794 [AS_HELP_STRING([--enable-maintainer-mode],
5795 [enable make rules and dependencies not useful
5796 (and sometimes confusing) to the casual installer])],
5797 maintainer_mode=$enableval,
5800 AC_MSG_RESULT($maintainer_mode)
5802 if test "$maintainer_mode" = "yes"; then
5809 dnl Whether to prevent multiple front-ends from linking at the same time
5811 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5812 AC_ARG_ENABLE(link-mutex,
5813 [AS_HELP_STRING([--enable-link-mutex],
5814 [avoid linking multiple front-ends at once to avoid thrashing
5815 on the build machine])],
5816 do_link_mutex=$enableval,
5818 AC_MSG_RESULT($do_link_mutex)
5820 if test "$do_link_mutex" = "yes"; then
5825 AC_SUBST(DO_LINK_MUTEX)
5831 # Make empty files to contain the specs and options for each language.
5832 # Then add #include lines to for a compiler that has specs and/or options.
5838 # These (without "all_") are set in each config-lang.in.
5839 # `language' must be a single word so is spelled singularly.
5842 all_outputs='Makefile'
5843 # List of language makefile fragments.
5845 # Additional files for gengtype
5846 all_gtfiles="$target_gtfiles"
5848 # These are the languages that are set in --enable-languages,
5849 # and are available in the GCC tree.
5850 all_selected_languages=
5852 # Add the language fragments.
5853 # Languages are added via two mechanisms. Some information must be
5854 # recorded in makefile variables, these are defined in config-lang.in.
5855 # We accumulate them and plug them into the main Makefile.
5856 # The other mechanism is a set of hooks for each of the main targets
5857 # like `clean', `install', etc.
5859 language_hooks="Make-hooks"
5861 for lang in ${srcdir}/*/config-lang.in
5864 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5866 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5867 if test "x$lang_alias" = x
5869 echo "$lang doesn't set \$language." 1>&2
5872 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5873 subdirs="$subdirs $subdir"
5875 # $gcc_subdir is where the gcc integration files are to be found
5876 # for a language, both for internal compiler purposes (compiler
5877 # sources implementing front-end to GCC tree converters), and for
5878 # build infrastructure purposes (Make-lang.in, etc.)
5880 # This will be <subdir> (relative to $srcdir) if a line like
5881 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5882 # is found in <langdir>/config-lang.in, and will remain <langdir>
5885 # Except for the language alias (fetched above), the regular
5886 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5887 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5888 # only this and the language alias.
5890 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5891 if [ "$gcc_subdir" = "" ]; then
5892 gcc_subdir="$subdir"
5895 case ",$enable_languages," in
5897 all_selected_languages="$all_selected_languages $lang_alias"
5898 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5899 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5911 . ${srcdir}/$gcc_subdir/config-lang.in
5912 if test "x$language" = x
5914 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5919 case ",$enable_languages," in
5922 for i in $subdir_requires; do
5923 test -f "${srcdir}/$i/config-lang.in" && continue
5931 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5932 if test -f $srcdir/$gcc_subdir/lang.opt; then
5933 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5934 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5936 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5937 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5939 all_languages="$all_languages $language"
5940 all_compilers="$all_compilers $compilers"
5941 all_outputs="$all_outputs $outputs"
5942 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5943 case ",$enable_languages," in
5945 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5947 AC_SUBST(enable_lto)
5954 for language in $all_selected_languages
5956 check_languages="$check_languages check-$language"
5959 # We link each language in with a set of hooks, reached indirectly via
5960 # lang.${target}. Only do so for selected languages.
5964 target_list="all.cross start.encap rest.encap tags \
5965 install-common install-man install-info install-pdf install-html dvi \
5966 pdf html uninstall info man srcextra srcman srcinfo \
5967 mostlyclean clean distclean maintainer-clean install-plugin"
5969 for t in $target_list
5972 for lang in $all_selected_languages
5976 echo "lang.$t: $x" >> Make-hooks
5980 # Option include files
5983 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5984 option_includes="option-includes.mk"
5985 AC_SUBST_FILE(option_includes)
5993 echo "dir ." > .gdbinit
5994 echo "dir ${srcdir}" >> .gdbinit
5995 if test x$gdb_needs_out_file_path = xyes
5997 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5999 if test "x$subdirs" != x; then
6002 echo "dir ${srcdir}/$s" >> .gdbinit
6005 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6006 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6008 # Put a breakpoint on __asan_report_error to help with debugging buffer
6011 *-fsanitize=address*)
6012 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6016 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6017 AC_SUBST(gcc_tooldir)
6020 # Find a directory in which to install a shared libgcc.
6022 AC_ARG_ENABLE(version-specific-runtime-libs,
6023 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6024 [specify that runtime libraries should be
6025 installed in a compiler-specific directory])])
6027 # Substitute configuration variables
6030 AC_SUBST(all_compilers)
6031 AC_SUBST(all_gtfiles)
6032 AC_SUBST(all_lang_makefrags)
6033 AC_SUBST(all_languages)
6034 AC_SUBST(all_selected_languages)
6035 AC_SUBST(build_exeext)
6036 AC_SUBST(build_install_headers_dir)
6037 AC_SUBST(build_xm_file_list)
6038 AC_SUBST(build_xm_include_list)
6039 AC_SUBST(build_xm_defines)
6040 AC_SUBST(build_file_translate)
6041 AC_SUBST(check_languages)
6042 AC_SUBST(cpp_install_dir)
6043 AC_SUBST(xmake_file)
6044 AC_SUBST(tmake_file)
6045 AC_SUBST(TM_ENDIAN_CONFIG)
6046 AC_SUBST(TM_MULTILIB_CONFIG)
6047 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6048 AC_SUBST(extra_gcc_objs)
6049 AC_SUBST(user_headers_inc_next_pre)
6050 AC_SUBST(user_headers_inc_next_post)
6051 AC_SUBST(extra_headers_list)
6052 AC_SUBST(extra_objs)
6053 AC_SUBST(extra_programs)
6054 AC_SUBST(float_h_file)
6055 AC_SUBST(gcc_config_arguments)
6056 AC_SUBST(gcc_gxx_include_dir)
6057 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6058 AC_SUBST(host_exeext)
6059 AC_SUBST(host_xm_file_list)
6060 AC_SUBST(host_xm_include_list)
6061 AC_SUBST(host_xm_defines)
6062 AC_SUBST(out_host_hook_obj)
6064 AC_SUBST(lang_opt_files)
6065 AC_SUBST(lang_specs_files)
6066 AC_SUBST(lang_tree_files)
6067 AC_SUBST(local_prefix)
6069 AC_SUBST(objc_boehm_gc)
6071 AC_SUBST(out_object_file)
6072 AC_SUBST(common_out_file)
6073 AC_SUBST(common_out_object_file)
6074 AC_SUBST(tm_file_list)
6075 AC_SUBST(tm_include_list)
6076 AC_SUBST(tm_defines)
6077 AC_SUBST(tm_p_file_list)
6078 AC_SUBST(tm_p_include_list)
6079 AC_SUBST(xm_file_list)
6080 AC_SUBST(xm_include_list)
6081 AC_SUBST(xm_defines)
6082 AC_SUBST(use_gcc_stdint)
6083 AC_SUBST(c_target_objs)
6084 AC_SUBST(cxx_target_objs)
6085 AC_SUBST(fortran_target_objs)
6086 AC_SUBST(target_cpu_default)
6088 AC_SUBST_FILE(language_hooks)
6091 if test x${build} = x${host} ; then
6092 if test x${host} = x${target} ; then
6093 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6095 echo "Links are now set up to build a cross-compiler" 1>&2
6096 echo " from ${host} to ${target}." 1>&2
6099 if test x${host} = x${target} ; then
6100 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6101 echo " for ${target}." 1>&2
6103 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6104 echo " from ${host} to ${target}." 1>&2
6108 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6109 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6111 AC_ARG_VAR(ISLLIBS,[How to link isl])
6112 AC_ARG_VAR(ISLINC,[How to find isl include files])
6113 if test "x${ISLLIBS}" != "x" ; then
6114 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6117 # Check whether isl_options_set_schedule_serialize_sccs is available;
6118 # it's new in isl 0.15.
6119 if test "x${ISLLIBS}" != "x" ; then
6120 saved_CXXFLAGS="$CXXFLAGS"
6121 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
6123 LIBS="$LIBS $ISLLIBS $GMPLIBS"
6125 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
6126 AC_TRY_LINK([#include <isl/schedule.h>],
6127 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
6128 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
6129 [ac_has_isl_options_set_schedule_serialize_sccs=no])
6130 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
6133 CXXFLAGS="$saved_CXXFLAGS"
6135 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
6136 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
6137 [Define if isl_options_set_schedule_serialize_sccs exists.])
6142 AC_SUBST(pluginlibs)
6143 AC_SUBST(enable_plugin)
6144 if test x"$enable_plugin" = x"yes"; then
6145 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6149 # Enable --enable-host-shared
6150 AC_ARG_ENABLE(host-shared,
6151 [AS_HELP_STRING([--enable-host-shared],
6152 [build host code as shared libraries])],
6153 [PICFLAG=-fPIC], [PICFLAG=])
6154 AC_SUBST(enable_host_shared)
6158 AC_ARG_ENABLE(libquadmath-support,
6159 [AS_HELP_STRING([--disable-libquadmath-support],
6160 [disable libquadmath support for Fortran])],
6161 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6162 ENABLE_LIBQUADMATH_SUPPORT=yes)
6163 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6164 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6165 [Define to 1 to enable libquadmath support])
6169 # Specify what hash style to use by default.
6170 AC_ARG_WITH([linker-hash-style],
6171 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6172 [specify the linker hash style])],
6173 [case x"$withval" in
6175 LINKER_HASH_STYLE=sysv
6178 LINKER_HASH_STYLE=gnu
6181 LINKER_HASH_STYLE=both
6184 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6187 [LINKER_HASH_STYLE=''])
6188 if test x"${LINKER_HASH_STYLE}" != x; then
6189 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6190 [The linker hash style])
6193 # Specify what should be the default of -fdiagnostics-color option.
6194 AC_ARG_WITH([diagnostics-color],
6195 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6196 [specify the default of -fdiagnostics-color option
6197 auto-if-env stands for -fdiagnostics-color=auto if
6198 GCC_COLOR environment variable is present and
6199 -fdiagnostics-color=never otherwise])],
6200 [case x"$withval" in
6202 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6205 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6208 DIAGNOSTICS_COLOR_DEFAULT=-1
6211 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6214 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6217 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6218 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6219 [The default for -fdiagnostics-color option])
6221 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6222 # of jit/jit-playback.c.
6223 cat > gcc-driver-name.h <<EOF
6224 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6227 # Check whether --enable-default-pie was given.
6228 AC_ARG_ENABLE(default-pie,
6229 [AS_HELP_STRING([--enable-default-pie],
6230 [enable Position Independent Executable as default])],
6231 enable_default_pie=$enableval,
6232 enable_default_pie=no)
6233 if test x$enable_default_pie = xyes ; then
6234 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6235 [Define if your target supports default PIE and it is enabled.])
6237 AC_SUBST([enable_default_pie])
6239 # Check if -fno-PIE works.
6240 AC_CACHE_CHECK([for -fno-PIE option],
6242 [saved_CXXFLAGS="$CXXFLAGS"
6243 CXXFLAGS="$CXXFLAGS -fno-PIE"
6244 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6245 [gcc_cv_c_no_fpie=yes],
6246 [gcc_cv_c_no_fpie=no])
6247 CXXFLAGS="$saved_CXXFLAGS"])
6248 if test "$gcc_cv_c_no_fpie" = "yes"; then
6249 NO_PIE_CFLAGS="-fno-PIE"
6251 AC_SUBST([NO_PIE_CFLAGS])
6253 # Check if -no-pie works.
6254 AC_CACHE_CHECK([for -no-pie option],
6256 [saved_LDFLAGS="$LDFLAGS"
6257 LDFLAGS="$LDFLAGS -no-pie"
6258 AC_LINK_IFELSE([int main(void) {return 0;}],
6259 [gcc_cv_no_pie=yes],
6261 LDFLAGS="$saved_LDFLAGS"])
6262 if test "$gcc_cv_no_pie" = "yes"; then
6263 NO_PIE_FLAG="-no-pie"
6265 AC_SUBST([NO_PIE_FLAG])
6267 # Check linker supports '-z bndplt'
6268 ld_bndplt_support=no
6269 AC_MSG_CHECKING(linker -z bndplt option)
6270 if test x"$ld_is_gold" = xno; then
6271 if test $in_tree_ld = yes ; then
6272 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6273 ld_bndplt_support=yes
6275 elif test x$gcc_cv_ld != x; then
6276 # Check if linker supports -a bndplt option
6277 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6278 ld_bndplt_support=yes
6282 if test x"$ld_bndplt_support" = xyes; then
6283 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6284 [Define if your linker supports -z bndplt])
6286 AC_MSG_RESULT($ld_bndplt_support)
6288 # Check linker supports '--push-state'/'--pop-state'
6289 ld_pushpopstate_support=no
6290 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6291 if test x"$ld_is_gold" = xno; then
6292 if test $in_tree_ld = yes ; then
6293 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6294 ld_pushpopstate_support=yes
6296 elif test x$gcc_cv_ld != x; then
6297 # Check if linker supports --push-state/--pop-state options
6298 if $gcc_cv_ld --help 2>/dev/null | grep -- '--push-state' > /dev/null; then
6299 ld_pushpopstate_support=yes
6303 if test x"$ld_pushpopstate_support" = xyes; then
6304 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6305 [Define if your linker supports --push-state/--pop-state])
6307 AC_MSG_RESULT($ld_pushpopstate_support)
6309 # Configure the subdirectories
6310 # AC_CONFIG_SUBDIRS($subdirs)
6312 # Create the Makefile
6313 # and configure language subdirectories
6314 AC_CONFIG_FILES($all_outputs)
6316 AC_CONFIG_COMMANDS([default],
6318 case ${CONFIG_HEADERS} in
6319 *auto-host.h:config.in*)
6322 # Make sure all the subdirs exist.
6323 for d in $subdirs doc build common c-family
6325 test -d $d || mkdir $d
6328 [subdirs='$subdirs'])