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 -Wcast-qual $wf_opt])), [loose_warn])
480 ACX_PROG_CC_WARNING_OPTS(
481 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
483 ACX_PROG_CXX_WARNING_OPTS(
484 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
487 ACX_PROG_CC_WARNING_OPTS(
488 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
489 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
490 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
491 [-Wno-overlength-strings])), [strict_warn])
492 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
494 # The above macros do nothing if the compiler is not GCC. However, the
495 # Makefile has more goo to add other flags, so these variables are used
496 # to enable warnings only for GCC.
499 if test "x$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 if test x$ac_extra_checking != x ; then
585 AC_DEFINE_UNQUOTED(CHECKING_P, $ac_checking,
586 [Define to 1 if you want more run-time sanity checks. This one gets a grab
587 bag of miscellaneous but relatively cheap checks. Define to 2 if you want
588 also extra run-time checking that might affect code generation.])
589 nocommon_flag=-fno-common
591 AC_DEFINE(CHECKING_P, 0)
593 AC_SUBST(nocommon_flag)
594 if test x$ac_df_checking != x ; then
595 AC_DEFINE(ENABLE_DF_CHECKING, 1,
596 [Define if you want more run-time sanity checks for dataflow.])
598 if test x$ac_assert_checking != x ; then
599 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
600 [Define if you want assertions enabled. This is a cheap check.])
602 if test x$ac_gimple_checking != x ; then
603 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
604 [Define if you want operations on GIMPLE (the basic data structure of
605 the high-level optimizers) to be checked for dynamic type safety at
606 runtime. This is moderately expensive.])
608 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
609 if test x$ac_runtime_checking != x ; then
610 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
611 [Define if you want runtime assertions enabled. This is a cheap check.])
613 if test x$ac_tree_checking != x ; then
614 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
615 [Define if you want all operations on trees (the basic data
616 structure of the front ends) to be checked for dynamic type safety
617 at runtime. This is moderately expensive.
621 if test x$ac_types_checking != x ; then
622 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
623 [Define if you want all gimple types to be verified after gimplifiation.
627 AC_SUBST(TREECHECKING)
628 if test x$ac_rtl_checking != x ; then
629 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
630 [Define if you want all operations on RTL (the basic data structure
631 of the optimizer and back end) to be checked for dynamic type safety
632 at runtime. This is quite expensive.])
634 if test x$ac_rtlflag_checking != x ; then
635 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
636 [Define if you want RTL flag accesses to be checked against the RTL
637 codes that are supported for each access macro. This is relatively
640 if test x$ac_gc_checking != x ; then
641 AC_DEFINE(ENABLE_GC_CHECKING, 1,
642 [Define if you want the garbage collector to do object poisoning and
643 other memory allocation checks. This is quite expensive.])
645 if test x$ac_gc_always_collect != x ; then
646 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
647 [Define if you want the garbage collector to operate in maximally
648 paranoid mode, validating the entire heap and collecting garbage at
649 every opportunity. This is extremely expensive.])
651 if test x$ac_fold_checking != x ; then
652 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
653 [Define if you want fold checked that it never destructs its argument.
654 This is quite expensive.])
656 valgrind_path_defines=
659 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
660 dnl # an if statement. This was the source of very frustrating bugs
661 dnl # in converting to autoconf 2.5x!
662 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
664 # It is certainly possible that there's valgrind but no valgrind.h.
665 # GCC relies on making annotations so we must have both.
666 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
667 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
668 [[#include <valgrind/memcheck.h>
669 #ifndef VALGRIND_DISCARD
670 #error VALGRIND_DISCARD not defined
672 [gcc_cv_header_valgrind_memcheck_h=yes],
673 [gcc_cv_header_valgrind_memcheck_h=no])
674 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
675 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
676 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
677 [[#include <memcheck.h>
678 #ifndef VALGRIND_DISCARD
679 #error VALGRIND_DISCARD not defined
681 [gcc_cv_header_memcheck_h=yes],
682 [gcc_cv_header_memcheck_h=no])
683 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
684 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
685 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
686 [Define if valgrind's valgrind/memcheck.h header is installed.])
688 if test $gcc_cv_header_memcheck_h = yes; then
689 AC_DEFINE(HAVE_MEMCHECK_H, 1,
690 [Define if valgrind's memcheck.h header is installed.])
693 if test x$ac_valgrind_checking != x ; then
694 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
695 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
696 if test "x$valgrind_path" = "x" \
697 || (test $have_valgrind_h = no \
698 && test $gcc_cv_header_memcheck_h = no \
699 && test $gcc_cv_header_valgrind_memcheck_h = no); then
700 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
702 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
703 valgrind_command="$valgrind_path -q"
704 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
705 [Define if you want to run subprograms and generated programs
706 through valgrind (a memory checker). This is extremely expensive.])
708 AC_SUBST(valgrind_path_defines)
709 AC_SUBST(valgrind_command)
711 # Enable code coverage collection
712 AC_ARG_ENABLE(coverage,
713 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
714 [enable compiler's code coverage collection.
715 Use to measure compiler performance and locate
716 unused parts of the compiler. With LEVEL, specify
717 optimization. Values are opt, noopt,
719 [case "${enableval}" in
721 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
724 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
727 # a.k.a. --disable-coverage
731 AC_MSG_ERROR(unknown coverage setting $enableval)
735 AC_SUBST(coverage_flags)
737 AC_ARG_ENABLE(gather-detailed-mem-stats,
738 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
739 [enable detailed memory allocation stats gathering])], [],
740 [enable_gather_detailed_mem_stats=no])
741 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
742 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
743 [Define to enable detailed memory allocation stats gathering.])
745 AC_ARG_ENABLE(valgrind-annotations,
746 [AS_HELP_STRING([--enable-valgrind-annotations],
747 [enable valgrind runtime interaction])], [],
748 [enable_valgrind_annotations=no])
749 if test x$enable_valgrind_annotations != xno \
750 || test x$ac_valgrind_checking != x; then
751 if (test $have_valgrind_h = no \
752 && test $gcc_cv_header_memcheck_h = no \
753 && test $gcc_cv_header_valgrind_memcheck_h = no); then
754 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
756 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
757 [Define to get calls to the valgrind runtime enabled.])
760 # -------------------------------
761 # Miscenalleous configure options
762 # -------------------------------
766 [AS_HELP_STRING([--with-stabs],
767 [arrange to use stabs instead of host debug format])],
771 # Determine whether or not multilibs are enabled.
772 AC_ARG_ENABLE(multilib,
773 [AS_HELP_STRING([--enable-multilib],
774 [enable library support for multiple ABIs])],
775 [], [enable_multilib=yes])
776 AC_SUBST(enable_multilib)
778 # Determine whether or not multiarch is enabled.
779 AC_ARG_ENABLE(multiarch,
780 [AS_HELP_STRING([--enable-multiarch],
781 [enable support for multiarch paths])],
782 [case "${enableval}" in
783 yes|no|auto) enable_multiarch=$enableval;;
784 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
785 esac], [enable_multiarch=auto])
786 if test x${enable_multiarch} = xauto; then
787 if test x${with_native_system_header_dir} != x; then
788 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
791 if test x$host != x$target && test "x$with_sysroot" = x; then
792 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
796 AC_MSG_CHECKING(for multiarch configuration)
797 AC_SUBST(enable_multiarch)
798 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
800 # needed for setting the multiarch name for soft-float/hard-float ABIs
804 # Enable __cxa_atexit for C++.
805 AC_ARG_ENABLE(__cxa_atexit,
806 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
809 # Enable C extension for decimal float if target supports it.
810 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
812 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
813 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
814 [Define to 1 to enable decimal float extension to C.])
816 # Use default_decimal_float for dependency.
817 enable_decimal_float=$default_decimal_float
819 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
820 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
821 [Define to 1 to specify that we are using the BID decimal floating
822 point format instead of DPD])
824 # Enable C extension for fixed-point arithmetic.
825 AC_ARG_ENABLE(fixed-point,
826 [AS_HELP_STRING([--enable-fixed-point],
827 [enable fixed-point arithmetic extension to C])],
832 enable_fixed_point=yes
836 enable_fixed_point=yes
839 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
840 enable_fixed_point=no
844 AC_SUBST(enable_fixed_point)
846 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
847 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
848 [Define to 1 to enable fixed-point arithmetic extension to C.])
851 # Pass with no value to take the default
852 # Pass with a value to specify a thread package
853 AC_ARG_ENABLE(threads,
854 [AS_HELP_STRING([[--enable-threads[=LIB]]],
855 [enable thread usage for target GCC,
856 using LIB thread package])],,
860 [AS_HELP_STRING([--enable-tls],
861 [enable or disable generation of tls code
862 overriding the assembler check for tls support])],
866 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
867 Valid choices are 'yes' and 'no'.]) ;;
871 AC_ARG_ENABLE(vtable-verify,
872 [AS_HELP_STRING([--enable-vtable-verify],
873 [enable vtable verification feature])],,
874 [enable_vtable_verify=no])
875 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
876 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
877 [Define 0/1 if vtable verification feature is enabled.])
879 AC_ARG_ENABLE(objc-gc,
880 [AS_HELP_STRING([--enable-objc-gc],
881 [enable the use of Boehm's garbage collector with
882 the GNU Objective-C runtime])],
883 if test x$enable_objc_gc = xno; then
891 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
892 dwarf2="$with_dwarf2",
895 AC_ARG_ENABLE(shared,
896 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
898 case $enable_shared in
902 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
903 for pkg in $enableval; do
904 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
911 ], [enable_shared=yes])
912 AC_SUBST(enable_shared)
915 [AS_HELP_STRING([--with-specs=SPECS],
916 [add SPECS to driver command-line processing])],
917 [CONFIGURE_SPECS=$withval],
920 AC_SUBST(CONFIGURE_SPECS)
922 ACX_PKGVERSION([GCC])
923 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
925 # Sanity check enable_languages in case someone does not run the toplevel
926 # configure # script.
927 AC_ARG_ENABLE(languages,
928 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
929 [case ,${enable_languages}, in
931 # go safe -- we cannot be much sure without the toplevel
933 # analysis of which target libs are present and usable
937 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
942 enable_languages=c,${enable_languages}
945 [enable_languages=c])
947 if test x"$enable_as_accelerator_for" != x; then
948 AC_DEFINE(ACCEL_COMPILER, 1,
949 [Define if this compiler should be built as the offload target compiler.])
950 enable_as_accelerator=yes
953 # In this case we expect offload compiler to be built as native, so we
954 # need to rename the driver to avoid clashes with host's drivers.
955 program_transform_name="s&^&${target}-&" ;;
957 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
958 program_transform_name=`echo $program_transform_name | sed $sedscript`
959 accel_dir_suffix=/accel/${target_noncanonical}
960 real_target_noncanonical=${enable_as_accelerator_for}
962 AC_SUBST(enable_as_accelerator)
963 AC_SUBST(real_target_noncanonical)
964 AC_SUBST(accel_dir_suffix)
966 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
967 tgt=`echo $tgt | sed 's/=.*//'`
969 if echo "$tgt" | grep "^hsa" > /dev/null ; then
975 if test x"$offload_targets" = x; then
978 offload_targets="$offload_targets,$tgt"
981 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
982 [Define to offload targets, separated by commas.])
983 if test x"$enable_offloading" != x; then
984 AC_DEFINE(ENABLE_OFFLOADING, 1,
985 [Define this to enable support for offloading.])
987 AC_DEFINE(ENABLE_OFFLOADING, 0,
988 [Define this to enable support for offloading.])
991 if test x"$enable_hsa" = x1 ; then
992 AC_DEFINE(ENABLE_HSA, 1,
993 [Define this to enable support for generating HSAIL.])
996 AC_ARG_WITH(multilib-list,
997 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
999 with_multilib_list=default)
1001 # -------------------------
1002 # Checks for other programs
1003 # -------------------------
1007 # Find some useful tools
1009 # We need awk to create options.c and options.h.
1010 # Bail out if it's missing.
1012 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1019 AC_SUBST(ranlib_flags)
1023 # See if cmp has --ignore-initial.
1024 gcc_AC_PROG_CMP_IGNORE_INITIAL
1026 # See if we have the mktemp command.
1027 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1029 # See if makeinfo has been installed and is modern enough
1030 # that we can use it.
1031 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1032 [GNU texinfo.* \([0-9][0-9.]*\)],
1033 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1034 if test $gcc_cv_prog_makeinfo_modern = no; then
1036 *** Makeinfo is missing or too old.
1037 *** Info documentation will not be built.])
1042 AC_SUBST(BUILD_INFO)
1044 # Is pod2man recent enough to regenerate manpages?
1045 AC_MSG_CHECKING([for recent Pod::Man])
1046 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1048 GENERATED_MANPAGES=generated-manpages
1053 AC_SUBST(GENERATED_MANPAGES)
1055 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1058 dnl Don't use AC_PROG_LEX; we insist on flex.
1059 dnl LEXLIB is not useful in gcc.
1060 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1063 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1065 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1066 # check for build == host before using them.
1069 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1070 && test -d ../binutils ; then
1071 NM='${objdir}/../binutils/nm-new'
1073 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1077 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1078 && test -d ../binutils ; then
1079 AR='${objdir}/../binutils/ar'
1081 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1084 # The jit documentation looks better if built with sphinx, but can be
1085 # built with texinfo if sphinx is not available.
1086 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1087 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1089 # --------------------
1090 # Checks for C headers
1091 # --------------------
1093 # Need to reject headers which give warnings, so that the -Werror bootstrap
1094 # works later. *sigh* This needs to come before all header checks.
1101 AC_HEADER_TIOCGWINSZ
1102 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1103 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1104 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1105 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1107 # Check for thread headers.
1108 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1109 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1111 # These tests can't be done till we know if we have limits.h.
1115 # ----------------------
1116 # Checks for C++ headers
1117 # ----------------------
1119 dnl Autoconf will give an error in the configure script if there is no
1120 dnl C++ preprocessor. Hack to prevent that.
1121 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1123 m4_popdef([AC_MSG_ERROR])[]dnl
1125 AC_CHECK_HEADERS(unordered_map)
1126 AC_CHECK_HEADERS(tr1/unordered_map)
1127 AC_CHECK_HEADERS(ext/hash_map)
1130 # Dependency checking.
1134 AC_CONFIG_COMMANDS([gccdepdir],[
1135 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1136 for lang in $subdirs c-family common
1138 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1139 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1141 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1148 # These libraries may be used by collect2.
1149 # We may need a special search path to get them linked.
1150 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1152 for libs in '' -lld -lmld \
1153 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1154 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1157 AC_TRY_LINK_FUNC(ldopen,
1158 [gcc_cv_collect2_libs="$libs"; break])
1161 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1162 case $gcc_cv_collect2_libs in
1164 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1166 AC_SUBST(COLLECT2_LIBS)
1168 # When building Ada code on Alpha, we need exc_resume which is usually in
1169 # -lexc. So test for it.
1172 AC_SEARCH_LIBS(exc_resume, exc)
1175 AC_SUBST(GNAT_LIBEXC)
1177 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1180 AC_SEARCH_LIBS(kstat_open, kstat)
1181 EXTRA_GCC_LIBS="$LIBS"
1183 AC_SUBST(EXTRA_GCC_LIBS)
1185 # Some systems put ldexp and frexp in libm instead of libc; assume
1186 # they're both in the same place. jcf-dump needs them.
1189 AC_SEARCH_LIBS(ldexp, m)
1194 # Use <inttypes.h> only if it exists,
1195 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1197 AC_MSG_CHECKING(for inttypes.h)
1198 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1199 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1200 [[#define __STDC_FORMAT_MACROS
1201 #include <sys/types.h>
1202 #include <inttypes.h>]],
1207 [gcc_cv_header_inttypes_h=yes],
1208 [gcc_cv_header_inttypes_h=no])])
1209 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1210 if test $gcc_cv_header_inttypes_h = yes; then
1211 AC_DEFINE(HAVE_INTTYPES_H, 1,
1212 [Define if you have a working <inttypes.h> header file.])
1215 dnl Disabled until we have a complete test for buggy enum bitfields.
1216 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1218 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1219 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1220 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1221 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1222 putchar_unlocked putc_unlocked)
1223 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1224 popen sysconf strsignal getrusage nl_langinfo \
1225 gettimeofday mbstowcs wcswidth mmap setlocale \
1226 gcc_UNLOCKED_FUNCS madvise)
1228 if test x$ac_cv_func_mbstowcs = xyes; then
1229 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1230 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1236 [gcc_cv_func_mbstowcs_works=yes],
1237 [gcc_cv_func_mbstowcs_works=no],
1238 [gcc_cv_func_mbstowcs_works=yes])])
1239 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1240 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1241 [Define this macro if mbstowcs does not crash when its
1242 first argument is NULL.])
1246 AC_CHECK_TYPE(ssize_t, int)
1247 AC_CHECK_TYPE(caddr_t, char *)
1249 GCC_AC_FUNC_MMAP_BLACKLIST
1253 # Under VMS, vfork works very differently than on Unix. The standard test
1254 # won't work, and it isn't easily adaptable. It makes more sense to
1256 ac_cv_func_vfork_works=yes
1263 # Until we have in-tree GNU iconv:
1265 if test -f "$LTLIBICONV"; then
1266 LIBICONV_DEP=$LTLIBICONV
1268 AC_SUBST(LIBICONV_DEP)
1274 # We will need to find libiberty.h and ansidecl.h
1275 saved_CFLAGS="$CFLAGS"
1276 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1277 saved_CXXFLAGS="$CXXFLAGS"
1278 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1280 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1281 # normal autoconf function for these. But force definition of
1282 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1283 # basename handling in libiberty.h.
1284 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1285 #undef HAVE_DECL_BASENAME
1286 #define HAVE_DECL_BASENAME 1
1287 #include "ansidecl.h"
1288 #include "system.h"])
1290 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1291 madvise stpcpy strnlen strsignal strverscmp \
1292 strtol strtoul strtoll strtoull setenv unsetenv \
1293 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1294 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1295 #include "ansidecl.h"
1296 #include "system.h"])
1298 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1299 #include "ansidecl.h"
1301 #ifdef HAVE_SYS_RESOURCE_H
1302 #include <sys/resource.h>
1306 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1307 #include "ansidecl.h"
1309 #ifdef HAVE_SYS_RESOURCE_H
1310 #include <sys/resource.h>
1312 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1313 [Define to `long' if <sys/resource.h> doesn't define.])])
1315 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1316 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1317 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1318 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1319 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1320 #include "ansidecl.h"
1329 gcc_AC_CHECK_DECLS(times, , ,[
1330 #include "ansidecl.h"
1332 #ifdef HAVE_SYS_TIMES_H
1333 #include <sys/times.h>
1337 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1338 #include "ansidecl.h"
1343 # More time-related stuff.
1344 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1345 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1346 #include "ansidecl.h"
1348 #ifdef HAVE_SYS_TIMES_H
1349 #include <sys/times.h>
1351 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1352 if test $ac_cv_struct_tms = yes; then
1353 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1354 [Define if <sys/times.h> defines struct tms.])
1357 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1358 # revisit after autoconf 2.50.
1359 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1360 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1361 #include "ansidecl.h"
1363 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1364 if test $gcc_cv_type_clock_t = yes; then
1365 AC_DEFINE(HAVE_CLOCK_T, 1,
1366 [Define if <time.h> defines clock_t.])
1369 # Check if F_SETLKW is supported by fcntl.
1370 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1371 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1372 #include <fcntl.h>]], [[
1378 return fcntl (1, F_SETLKW, &fl);]])],
1379 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1380 if test $ac_cv_f_setlkw = yes; then
1381 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1382 [Define if F_SETLKW supported by fcntl.])
1385 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1386 CFLAGS="$saved_CFLAGS"
1387 CXXFLAGS="$saved_CXXFLAGS"
1389 # mkdir takes a single argument on some systems.
1390 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1398 # With Setjmp/Longjmp based exception handling.
1399 AC_ARG_ENABLE(sjlj-exceptions,
1400 [AS_HELP_STRING([--enable-sjlj-exceptions],
1401 [arrange to use setjmp/longjmp exception handling])],
1404 if test $enableval != yes; then
1405 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1410 force_sjlj_exceptions=yes],
1413 force_sjlj_exceptions=yes
1417 force_sjlj_exceptions=yes
1421 force_sjlj_exceptions=no
1424 if test $force_sjlj_exceptions = yes; then
1425 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1426 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1427 [Define 0/1 to force the choice for exception handling model.])
1430 # --------------------------------------------------------
1431 # Build, host, and target specific configuration fragments
1432 # --------------------------------------------------------
1434 # Collect build-machine-specific information.
1435 . ${srcdir}/config.build
1437 # Collect host-machine-specific information.
1438 . ${srcdir}/config.host
1442 # Collect target-machine-specific information.
1443 . ${srcdir}/config.gcc
1445 extra_objs="${host_extra_objs} ${extra_objs}"
1446 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1448 # Default the target-machine variables that were not explicitly set.
1449 if test x"$tm_file" = x
1450 then tm_file=$cpu_type/$cpu_type.h; fi
1452 if test x"$extra_headers" = x
1453 then extra_headers=; fi
1455 if test x$md_file = x
1456 then md_file=$cpu_type/$cpu_type.md; fi
1458 if test x$out_file = x
1459 then out_file=$cpu_type/$cpu_type.c; fi
1461 if test x"$tmake_file" = x
1462 then tmake_file=$cpu_type/t-$cpu_type
1465 # Support --enable-initfini-array.
1466 if test x$enable_initfini_array != xno; then
1467 tm_file="${tm_file} initfini-array.h"
1470 if test x"$dwarf2" = xyes
1471 then tm_file="$tm_file tm-dwarf2.h"
1474 # Say what files are being used for the output code and MD file.
1475 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1476 echo "Using \`$srcdir/config/$md_file' as machine description file."
1478 # If any of the xm_file variables contain nonexistent files, warn
1479 # about them and drop them.
1482 for x in $build_xm_file; do
1483 if test -f $srcdir/config/$x
1485 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1491 for x in $host_xm_file; do
1492 if test -f $srcdir/config/$x
1494 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1500 for x in $xm_file; do
1501 if test -f $srcdir/config/$x
1503 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1509 for f in $tm_file; do
1512 if test $count = ax; then
1513 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1515 echo "Using the following target machine macro files:"
1516 for f in $tm_file; do
1517 echo " $srcdir/config/$f"
1521 if test x$use_long_long_for_widest_fast_int = xyes; then
1522 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1523 [Define to 1 if the 'long long' type is wider than 'long' but still
1524 efficiently supported by the host hardware.])
1527 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1528 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1530 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1531 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1534 for f in $host_xm_file; do
1537 if test $count = a; then
1539 elif test $count = ax; then
1540 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1542 echo "Using the following host machine macro files:"
1543 for f in $host_xm_file; do
1544 echo " $srcdir/config/$f"
1547 echo "Using ${out_host_hook_obj} for host machine hooks."
1549 if test "$host_xm_file" != "$build_xm_file"; then
1551 for f in $build_xm_file; do
1554 if test $count = a; then
1556 elif test $count = ax; then
1557 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1559 echo "Using the following build machine macro files:"
1560 for f in $build_xm_file; do
1561 echo " $srcdir/config/$f"
1566 if test -n "$configured_native_system_header_dir"; then
1567 native_system_header_dir=$configured_native_system_header_dir
1569 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1570 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1574 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1575 gcc_cv_mcontext_underscores,
1577 #include <sys/cdefs.h>
1578 #include <sys/signal.h>
1579 #include <ucontext.h>
1580 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1582 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1583 if test $gcc_cv_mcontext_underscores = yes; then
1584 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1585 [mcontext_t fields start with __])
1594 # Check if a valid thread package
1595 case ${enable_threads} in
1598 target_thread_file='single'
1602 target_thread_file='single'
1604 aix | dce | lynx | mipssde | posix | rtems | \
1605 single | tpf | vxworks | win32)
1606 target_thread_file=${enable_threads}
1609 echo "${enable_threads} is an unknown thread package" 1>&2
1614 if test x${thread_file} = x; then
1615 # No thread file set by target-specific clauses in config.gcc,
1616 # so use file chosen by default logic above
1617 thread_file=${target_thread_file}
1625 if test x$enable___cxa_atexit = xyes || \
1626 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1627 if test x$host = x$target; then
1629 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1630 # keyed to flag_use_cxa_atexit
1638 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1639 [echo "__cxa_atexit can't be enabled on this target"])
1643 # We can't check for __cxa_atexit when building a cross, so assume
1647 if test x$use_cxa_atexit = xyes; then
1648 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1649 [Define if you want to use __cxa_atexit, rather than atexit, to
1650 register C++ destructors for local statics and global objects.
1651 This is essential for fully standards-compliant handling of
1652 destructors, but requires __cxa_atexit in libc.])
1656 # Look for a file containing extra machine modes.
1657 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1658 extra_modes_file='$(srcdir)'/config/${extra_modes}
1659 AC_SUBST(extra_modes_file)
1660 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1661 [Define to the name of a file containing a list of extra machine modes
1662 for this architecture.])
1665 # Convert extra_options into a form suitable for Makefile use.
1668 for f in $extra_options; do
1669 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1670 all_opt_files="$all_opt_files $srcdir/config/$f"
1672 AC_SUBST(extra_opt_files)
1674 # auto-host.h is the file containing items generated by autoconf and is
1675 # the first file included by config.h.
1676 # If host=build, it is correct to have bconfig include auto-host.h
1677 # as well. If host!=build, we are in error and need to do more
1678 # work to find out the build config parameters.
1679 if test x$host = x$build
1681 build_auto=auto-host.h
1683 # We create a subdir, then run autoconf in the subdir.
1684 # To prevent recursion we set host and build for the new
1685 # invocation of configure to the build for this invocation
1692 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1693 *) realsrcdir=../${srcdir};;
1695 # Clearing GMPINC is necessary to prevent host headers being
1696 # used by the build compiler. Defining GENERATOR_FILE stops
1697 # system.h from including gmp.h.
1698 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1699 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1700 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1701 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1702 ${realsrcdir}/configure \
1703 --enable-languages=${enable_languages-all} \
1704 --target=$target_alias --host=$build_alias --build=$build_alias
1706 # We just finished tests for the build machine, so rename
1707 # the file auto-build.h in the gcc directory.
1708 mv auto-host.h ../auto-build.h
1711 build_auto=auto-build.h
1713 AC_SUBST(build_subdir)
1715 tm_file="${tm_file} defaults.h"
1716 tm_p_file="${tm_p_file} tm-preds.h"
1717 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1718 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1719 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1720 # put this back in temporarily.
1721 xm_file="auto-host.h ansidecl.h ${xm_file}"
1728 # Compile in configure arguments.
1729 if test -f configargs.h ; then
1730 # Being re-configured.
1731 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1732 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1734 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1737 # Double all backslashes and backslash all quotes to turn
1738 # gcc_config_arguments into a C string.
1739 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1740 $gcc_config_arguments
1742 gcc_config_arguments_str=`cat conftest.out`
1745 cat > configargs.h <<EOF
1746 /* Generated automatically. */
1747 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1748 static const char thread_model[] = "$thread_file";
1750 static const struct {
1751 const char *name, *value;
1752 } configure_default_options[] = $configure_default_options;
1757 gcc_BASEVER=`cat $srcdir/BASE-VER`
1758 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1759 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1760 if test -f $srcdir/REVISION ; then
1761 gcc_REVISION=`cat $srcdir/REVISION`
1765 cat > plugin-version.h <<EOF
1766 #include "configargs.h"
1768 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1769 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1770 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1771 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1773 static char basever[] = "$gcc_BASEVER";
1774 static char datestamp[] = "$gcc_DATESTAMP";
1775 static char devphase[] = "$gcc_DEVPHASE";
1776 static char revision[] = "$gcc_REVISION";
1778 /* FIXME plugins: We should make the version information more precise.
1779 One way to do is to add a checksum. */
1781 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1783 configuration_arguments};
1787 # Internationalization
1788 ZW_GNU_GETTEXT_SISTER_DIR
1790 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1791 # -liconv on the link line twice.
1792 case "$LIBINTL" in *$LIBICONV*)
1796 AC_ARG_ENABLE(secureplt,
1797 [AS_HELP_STRING([--enable-secureplt],
1798 [enable -msecure-plt by default for PowerPC])],
1801 AC_ARG_ENABLE(leading-mingw64-underscores,
1802 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1803 [enable leading underscores on 64 bit mingw targets]),
1805 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1806 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1807 [Define if we should use leading underscore on 64 bit mingw targets])])
1810 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1813 AC_ARG_ENABLE(frame-pointer,
1814 [AS_HELP_STRING([--enable-frame-pointer],
1815 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1818 linux* | darwin[[8912]]*)
1819 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1821 enable_frame_pointer=no
1824 enable_frame_pointer=yes
1829 # Windows32 Registry support for specifying GCC installation paths.
1830 AC_ARG_ENABLE(win32-registry,
1831 [AS_HELP_STRING([--disable-win32-registry],
1832 [disable lookup of installation paths in the
1833 Registry on Windows hosts])
1834 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1835 AS_HELP_STRING([--enable-win32-registry=KEY],
1836 [use KEY instead of GCC version as the last portion
1837 of the registry key])],,)
1840 win32 | pe | cygwin* | mingw32*)
1841 if test "x$enable_win32_registry" != xno; then
1842 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1845 if test "x$enable_win32_registry" != xno; then
1846 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1847 [Define to 1 if installation paths should be looked up in the Windows
1848 Registry. Ignored on non-Windows hosts.])
1850 if test "x$enable_win32_registry" != xyes \
1851 && test "x$enable_win32_registry" != x; then
1852 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1853 [Define to be the last component of the Windows registry key under which
1854 to look for installation paths. The full key used will be
1855 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1856 The default is the GCC version number.])
1862 # Get an absolute path to the GCC top-level source directory
1863 holddir=`${PWDCMD-pwd}`
1865 topdir=`${PWDCMD-pwd}`
1868 # Conditionalize the makefile for this host machine.
1870 for f in ${host_xmake_file}
1872 if test -f ${srcdir}/config/$f
1874 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1878 # Conditionalize the makefile for this target machine.
1880 for f in ${tmake_file}
1882 if test -f ${srcdir}/config/$f
1884 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1887 tmake_file="${tmake_file_}"
1889 out_object_file=`basename $out_file .c`.o
1890 common_out_object_file=`basename $common_out_file .c`.o
1892 tm_file_list="options.h"
1893 tm_include_list="options.h insn-constants.h"
1894 for f in $tm_file; do
1897 f=`echo $f | sed 's/^..//'`
1898 tm_file_list="${tm_file_list} $f"
1899 tm_include_list="${tm_include_list} $f"
1902 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1903 tm_include_list="${tm_include_list} $f"
1906 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1907 tm_include_list="${tm_include_list} config/$f"
1914 for f in $tm_p_file; do
1917 tm_p_file_list="${tm_p_file_list} $f"
1918 tm_p_include_list="${tm_p_include_list} $f"
1921 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1922 tm_p_include_list="${tm_p_include_list} config/$f"
1928 for f in $xm_file; do
1931 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1932 xm_include_list="${xm_include_list} $f"
1935 xm_file_list="${xm_file_list} $f"
1936 xm_include_list="${xm_include_list} $f"
1939 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1940 xm_include_list="${xm_include_list} config/$f"
1946 host_xm_include_list=
1947 for f in $host_xm_file; do
1950 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1951 host_xm_include_list="${host_xm_include_list} $f"
1954 host_xm_file_list="${host_xm_file_list} $f"
1955 host_xm_include_list="${host_xm_include_list} $f"
1958 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1959 host_xm_include_list="${host_xm_include_list} config/$f"
1965 for f in $build_xm_file; do
1968 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1969 build_xm_include_list="${build_xm_include_list} $f"
1971 auto-build.h | auto-host.h )
1972 build_xm_file_list="${build_xm_file_list} $f"
1973 build_xm_include_list="${build_xm_include_list} $f"
1976 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1977 build_xm_include_list="${build_xm_include_list} config/$f"
1982 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1983 # cross-compiler which does not use the native headers and libraries.
1984 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1985 CROSS= AC_SUBST(CROSS)
1986 ALL=all.internal AC_SUBST(ALL)
1987 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1989 if test "x$with_build_sysroot" != x; then
1990 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1992 # This value is used, even on a native system, because
1993 # CROSS_SYSTEM_HEADER_DIR is just
1994 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1995 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1998 if test x$host != x$target
2000 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2002 SYSTEM_HEADER_DIR=$build_system_header_dir
2003 case "$host","$target" in
2004 # Darwin crosses can use the host system's libraries and headers,
2005 # because of the fat library support. Of course, it must be the
2006 # same version of Darwin on both sides. Allow the user to
2007 # just say --target=foo-darwin without a version number to mean
2008 # "the version on this system".
2009 *-*-darwin*,*-*-darwin*)
2010 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2011 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2012 if test $hostos = $targetos -o $targetos = darwin ; then
2014 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2019 i?86-*-*,x86_64-*-* \
2020 | powerpc*-*-*,powerpc64*-*-*)
2021 CROSS="$CROSS -DNATIVE_CROSS" ;;
2026 if test "x$with_headers" = x; then
2033 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2034 SYSTEM_HEADER_DIR=$build_system_header_dir
2037 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2038 if test "x$with_headers" != x && test "x$with_headers" != xyes; then
2039 target_header_dir=$with_headers
2040 elif test "x$with_sysroot" = x; then
2041 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2042 elif test "x$with_build_sysroot" != "x"; then
2043 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2044 elif test "x$with_sysroot" = xyes; then
2045 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2047 target_header_dir="${with_sysroot}${native_system_header_dir}"
2050 target_header_dir=${native_system_header_dir}
2053 # If this is a cross-compiler that does not
2054 # have its own set of headers then define
2057 # If this is using newlib, without having the headers available now,
2058 # then define inhibit_libc in LIBGCC2_CFLAGS.
2059 # This prevents libgcc2 from containing any code which requires libc
2061 : ${inhibit_libc=false}
2062 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2063 test x$with_newlib = xyes ; } &&
2064 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2067 AC_SUBST(inhibit_libc)
2069 # When building gcc with a cross-compiler, we need to adjust things so
2070 # that the generator programs are still built with the native compiler.
2071 # Also, we cannot run fixincludes.
2073 # These are the normal (build=host) settings:
2074 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2075 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2076 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2077 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2078 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2079 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2081 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2082 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2084 # And these apply if build != host, or we are generating coverage data
2085 if test x$build != x$host || test "x$coverage_flags" != x
2087 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2088 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2089 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2091 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2092 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2093 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2094 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2096 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2097 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2099 # Expand extra_headers to include complete path.
2100 # This substitutes for lots of t-* files.
2102 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2103 for file in ${extra_headers} ; do
2104 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2107 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2108 if test x"$use_gcc_tgmath" = xyes
2109 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2112 # Define collect2 in Makefile.
2113 case $host_can_use_collect2 in
2115 *) collect2='collect2$(exeext)' ;;
2117 AC_SUBST([collect2])
2119 # Add a definition of USE_COLLECT2 if system wants one.
2120 case $use_collect2 in
2121 no) use_collect2= ;;
2124 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2125 xm_defines="${xm_defines} USE_COLLECT2"
2126 case $host_can_use_collect2 in
2128 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2134 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2135 [Define to the name of the LTO plugin DSO that must be
2136 passed to the linker's -plugin=LIB option.])
2138 # ---------------------------
2139 # Assembler & linker features
2140 # ---------------------------
2142 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2143 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2144 # However when ld-new is first executed from the build tree, libtool will
2145 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2146 # to the build tree. While doing this we need to use the previous-stage
2147 # linker, or we have an infinite loop. The presence of a shell script as
2148 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2149 # the gcc/collect-ld script. So we need to know how libtool works, or
2150 # exec-tool will fail.
2152 m4_defun([_LT_CONFIG_COMMANDS], [])
2155 AC_SUBST(enable_fast_install)
2157 # Identify the assembler which will work hand-in-glove with the newly
2158 # built GCC, so that we can examine its features. This is the assembler
2159 # which will be driven by the driver program.
2161 # If build != host, and we aren't building gas in-tree, we identify a
2162 # build->target assembler and hope that it will have the same features
2163 # as the host->target assembler we'll be using.
2164 gcc_cv_gas_major_version=
2165 gcc_cv_gas_minor_version=
2166 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2168 m4_pattern_allow([AS_FOR_TARGET])dnl
2169 AS_VAR_SET_IF(gcc_cv_as,, [
2170 if test -x "$DEFAULT_ASSEMBLER"; then
2171 gcc_cv_as="$DEFAULT_ASSEMBLER"
2172 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2173 && test -f ../gas/Makefile \
2174 && test x$build = x$host; then
2175 gcc_cv_as=../gas/as-new$build_exeext
2176 elif test -x as$build_exeext; then
2177 # Build using assembler in the current directory.
2178 gcc_cv_as=./as$build_exeext
2179 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2180 gcc_cv_as="$AS_FOR_TARGET"
2182 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2185 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2186 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2187 case "$ORIGINAL_AS_FOR_TARGET" in
2188 ./as | ./as$build_exeext) ;;
2189 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2192 AC_MSG_CHECKING(what assembler to use)
2193 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2194 # Single tree build which includes gas. We want to prefer it
2195 # over whatever linker top-level may have detected, since
2196 # we'll use what we're building after installation anyway.
2197 AC_MSG_RESULT(newly built gas)
2199 _gcc_COMPUTE_GAS_VERSION
2200 in_tree_gas_is_elf=no
2201 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2202 || (grep 'obj_format = multi' ../gas/Makefile \
2203 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2205 in_tree_gas_is_elf=yes
2208 AC_MSG_RESULT($gcc_cv_as)
2214 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2215 [case "${enableval}" in
2221 install_gold_as_default=no
2223 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2224 [case "${enableval}" in
2226 install_gold_as_default=yes
2229 if test x${default_ld} != x; then
2230 install_gold_as_default=yes
2236 AC_MSG_ERROR([invalid --enable-gold argument])
2240 # Identify the linker which will work hand-in-glove with the newly
2241 # built GCC, so that we can examine its features. This is the linker
2242 # which will be driven by the driver program.
2244 # If build != host, and we aren't building gas in-tree, we identify a
2245 # build->target linker and hope that it will have the same features
2246 # as the host->target linker we'll be using.
2247 gcc_cv_gld_major_version=
2248 gcc_cv_gld_minor_version=
2249 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2250 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2251 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2253 AS_VAR_SET_IF(gcc_cv_ld,, [
2254 if test -x "$DEFAULT_LINKER"; then
2255 gcc_cv_ld="$DEFAULT_LINKER"
2256 elif test $install_gold_as_default = yes \
2257 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2258 && test -f ../gold/Makefile \
2259 && test x$build = x$host; then
2260 gcc_cv_ld=../gold/ld-new$build_exeext
2261 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2262 && test -f ../ld/Makefile \
2263 && test x$build = x$host; then
2264 gcc_cv_ld=../ld/ld-new$build_exeext
2265 elif test -x collect-ld$build_exeext; then
2266 # Build using linker in the current directory.
2267 gcc_cv_ld=./collect-ld$build_exeext
2268 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2269 gcc_cv_ld="$LD_FOR_TARGET"
2271 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2274 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2275 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2276 # if the PLUGIN_LD is set ld-new, just have it as ld
2277 # as that is the installed named.
2278 if test x$PLUGIN_LD_SUFFIX = xld-new \
2279 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2282 AC_ARG_WITH(plugin-ld,
2283 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2284 [if test x"$withval" != x; then
2285 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2286 PLUGIN_LD_SUFFIX="$withval"
2288 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2289 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2291 # Check to see if we are using gold instead of ld
2292 AC_MSG_CHECKING(whether we are using gold)
2294 if test x$gcc_cv_ld != x; then
2295 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2296 | grep "GNU gold" > /dev/null; then
2300 AC_MSG_RESULT($ld_is_gold)
2302 AC_MSG_CHECKING(gold linker with split stack support as non default)
2303 # Check to see if default ld is not gold, but gold is
2304 # available and has support for split stack. If gcc was configured
2305 # with gold then no checking is done.
2307 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2309 # For platforms other than powerpc64*, enable as appropriate.
2312 ld_gold=`which ${gcc_cv_ld}.gold`
2313 # Make sure this gold has minimal split stack support
2314 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2315 ld_vers=`$ld_gold --version | sed 1q`
2316 gold_vers=`echo $ld_vers | sed -n \
2317 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2319 # check that the gold version contains the complete split stack support
2320 # on powerpc64 big and little endian
2322 case "$gold_vers" in
2323 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2325 *) gold_non_default=no
2331 if test $gold_non_default = yes; then
2332 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2333 [Define if the gold linker supports split stack and is available as a non-default])
2336 AC_MSG_RESULT($gold_non_default)
2338 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2339 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2340 case "$ORIGINAL_LD_FOR_TARGET" in
2341 ./collect-ld | ./collect-ld$build_exeext) ;;
2342 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2345 AC_MSG_CHECKING(what linker to use)
2346 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2347 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2348 # Single tree build which includes ld. We want to prefer it
2349 # over whatever linker top-level may have detected, since
2350 # we'll use what we're building after installation anyway.
2351 AC_MSG_RESULT(newly built ld)
2353 in_tree_ld_is_elf=no
2354 if (grep 'EMUL = .*elf' ../ld/Makefile \
2355 || grep 'EMUL = .*linux' ../ld/Makefile \
2356 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2357 in_tree_ld_is_elf=yes
2358 elif test "$ld_is_gold" = yes; then
2359 in_tree_ld_is_elf=yes
2361 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
2364 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2365 if test x$gcc_cv_gld_version != x; then
2369 case $gcc_cv_gld_version in
2372 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2375 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2376 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2378 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2379 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2381 AC_MSG_RESULT($gcc_cv_ld)
2383 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2384 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2385 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2388 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2389 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2391 # Figure out what nm we will be using.
2392 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2393 AS_VAR_SET_IF(gcc_cv_nm,, [
2394 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2395 && test -f ../binutils/Makefile \
2396 && test x$build = x$host; then
2397 gcc_cv_nm=../binutils/nm-new$build_exeext
2398 elif test -x nm$build_exeext; then
2399 gcc_cv_nm=./nm$build_exeext
2400 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2401 gcc_cv_nm="$NM_FOR_TARGET"
2403 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2406 AC_MSG_CHECKING(what nm to use)
2407 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2408 # Single tree build which includes binutils.
2409 AC_MSG_RESULT(newly built nm)
2412 AC_MSG_RESULT($gcc_cv_nm)
2416 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2417 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2418 case "$ORIGINAL_NM_FOR_TARGET" in
2419 ./nm | ./nm$build_exeext) ;;
2420 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2424 # Figure out what objdump we will be using.
2425 AS_VAR_SET_IF(gcc_cv_objdump,, [
2426 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2427 && test -f ../binutils/Makefile \
2428 && test x$build = x$host; then
2429 # Single tree build which includes binutils.
2430 gcc_cv_objdump=../binutils/objdump$build_exeext
2431 elif test -x objdump$build_exeext; then
2432 gcc_cv_objdump=./objdump$build_exeext
2433 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2434 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2436 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2439 AC_MSG_CHECKING(what objdump to use)
2440 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2441 # Single tree build which includes binutils.
2442 AC_MSG_RESULT(newly built objdump)
2443 elif test x$gcc_cv_objdump = x; then
2444 AC_MSG_RESULT(not found)
2446 AC_MSG_RESULT($gcc_cv_objdump)
2449 # Figure out what readelf we will be using.
2450 AS_VAR_SET_IF(gcc_cv_readelf,, [
2451 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2452 && test -f ../binutils/Makefile \
2453 && test x$build = x$host; then
2454 # Single tree build which includes binutils.
2455 gcc_cv_readelf=../binutils/readelf$build_exeext
2456 elif test -x readelf$build_exeext; then
2457 gcc_cv_readelf=./readelf$build_exeext
2458 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2459 gcc_cv_readelf="$READELF_FOR_TARGET"
2461 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2464 AC_MSG_CHECKING(what readelf to use)
2465 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2466 # Single tree build which includes binutils.
2467 AC_MSG_RESULT(newly built readelf)
2468 elif test x$gcc_cv_readelf = x; then
2469 AC_MSG_RESULT(not found)
2471 AC_MSG_RESULT($gcc_cv_readelf)
2474 # Figure out what assembler alignment features are present.
2475 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2479 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2480 [Define if your assembler supports .balign and .p2align.])])
2482 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2485 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2486 [Define if your assembler supports specifying the maximum number
2487 of bytes to skip when using the GAS .p2align command.])])
2489 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2492 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2493 [Define if your assembler supports .literal16.])])
2495 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2497 [conftest_label1: .word 0
2499 conftest_label2: .word 0
2501 [if test x$gcc_cv_nm != x; then
2502 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2503 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2504 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2506 else gcc_cv_as_subsection_m1=yes
2508 rm -f conftest.nm1 conftest.nm2
2510 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2511 [Define if your assembler supports .subsection and .subsection -1 starts
2512 emitting at the beginning of your section.])])
2514 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2517 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2519 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2521 [ .weakref foobar, barfnot],,
2522 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2524 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2527 .NSUBSPA $CODE$,COMDAT],,
2528 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2530 # .hidden needs to be supported in both the assembler and the linker,
2531 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2532 # This is irritatingly difficult to feature test for; we have to check the
2533 # date string after the version number. If we've got an in-tree
2534 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2536 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2537 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2543 # Darwin as has some visibility support, though with a different syntax.
2544 gcc_cv_as_hidden=yes
2548 # gnu_indirect_function type is an extension proposed at
2549 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2550 # selection of function implementation
2551 AC_ARG_ENABLE(gnu-indirect-function,
2552 [AS_HELP_STRING([--enable-gnu-indirect-function],
2553 [enable the use of the @gnu_indirect_function to glibc systems])],
2554 [case $enable_gnu_indirect_function in
2556 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2557 Valid choices are 'yes' and 'no'.]) ;;
2559 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2561 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2562 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2563 [Define if your system supports gnu indirect functions.])
2567 if test $in_tree_ld != yes ; then
2568 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2569 if echo "$ld_ver" | grep GNU > /dev/null; then
2570 if test x"$ld_is_gold" = xyes; then
2571 # GNU gold --version looks like this:
2573 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2575 # We extract the binutils version which is more familiar and specific
2576 # than the gold version.
2577 ld_vers=`echo $ld_ver | sed -n \
2578 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2580 # GNU ld --version looks like this:
2582 # GNU ld (GNU Binutils) 2.21.51.20110225
2583 ld_vers=`echo $ld_ver | sed -n \
2584 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2586 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2587 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2588 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2589 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2593 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2596 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2597 # /usr/ccs/bin/ld has been configured.
2598 ld_ver=`$gcc_cv_ld -V 2>&1`
2599 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2600 ld_vers=`echo $ld_ver | sed -n \
2601 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2602 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2603 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2611 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2612 [[if test $in_tree_ld = yes ; then
2614 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2615 && test $in_tree_ld_is_elf = yes; then
2616 gcc_cv_ld_hidden=yes
2619 gcc_cv_ld_hidden=yes
2620 if test x"$ld_is_gold" = xyes; then
2622 elif echo "$ld_ver" | grep GNU > /dev/null; then
2624 mmix-knuth-mmixware)
2625 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2629 if test 0"$ld_date" -lt 20020404; then
2630 if test -n "$ld_date"; then
2631 # If there was date string, but was earlier than 2002-04-04, fail
2633 elif test -z "$ld_vers"; then
2634 # If there was no date string nor ld version number, something is wrong
2637 test -z "$ld_vers_patch" && ld_vers_patch=0
2638 if test "$ld_vers_major" -lt 2; then
2640 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2641 gcc_cv_ld_hidden="no"
2642 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2650 # Darwin ld has some visibility support.
2651 gcc_cv_ld_hidden=yes
2653 hppa64*-*-hpux* | ia64*-*-hpux*)
2654 gcc_cv_ld_hidden=yes
2656 *-*-solaris2.1[0-9]*)
2657 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2658 # .symbolic was only added in Solaris 9 12/02.
2659 gcc_cv_ld_hidden=yes
2667 libgcc_visibility=no
2668 AC_SUBST(libgcc_visibility)
2669 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2670 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2671 libgcc_visibility=yes
2672 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2673 [Define if your assembler and linker support .hidden.])
2676 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2677 gcc_cv_ld_ro_rw_mix=unknown
2678 if test $in_tree_ld = yes ; then
2679 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2680 && test $in_tree_ld_is_elf = yes; then
2681 gcc_cv_ld_ro_rw_mix=read-write
2683 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2684 echo '.section myfoosect, "a"' > conftest1.s
2685 echo '.section myfoosect, "aw"' > conftest2.s
2686 echo '.byte 1' >> conftest2.s
2687 echo '.section myfoosect, "a"' > conftest3.s
2688 echo '.byte 0' >> conftest3.s
2689 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2690 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2691 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2692 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2693 conftest2.o conftest3.o > /dev/null 2>&1; then
2694 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2695 | sed -e '/myfoosect/!d' -e N`
2696 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2697 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2698 gcc_cv_ld_ro_rw_mix=read-only
2700 gcc_cv_ld_ro_rw_mix=read-write
2705 rm -f conftest.* conftest[123].*
2708 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2709 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2710 [Define if your linker links a mix of read-only
2711 and read-write sections into a read-write section.])
2713 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2715 gcc_AC_INITFINI_ARRAY
2717 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2718 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2726 [[# GAS versions before 2.11 do not support uleb128,
2727 # despite appearing to.
2728 # ??? There exists an elf-specific test that will crash
2729 # the assembler. Perhaps it's better to figure out whether
2730 # arbitrary sections are supported and try the test.
2731 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2732 if echo "$as_ver" | grep GNU > /dev/null; then
2733 as_vers=`echo $as_ver | sed -n \
2734 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2735 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2736 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2737 if test $as_major -eq 2 && test $as_minor -lt 11
2739 else gcc_cv_as_leb128=yes
2742 [AC_DEFINE(HAVE_AS_LEB128, 1,
2743 [Define if your assembler supports .sleb128 and .uleb128.])])
2745 # Check if we have assembler support for unwind directives.
2746 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2753 .cfi_escape 1, 2, 3, 4, 5
2757 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2758 # read-only and read-write sections, we need to make sure that the
2759 # assembler used emits read-write .eh_frame sections.
2760 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2761 if test "x$gcc_cv_objdump" != x; then
2762 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2763 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2764 gcc_cv_as_cfi_directive=no
2767 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2768 # On Solaris/x86, make sure that GCC and assembler agree on using
2769 # read-only .eh_frame sections for 64-bit.
2770 if test x$gas = xyes; then
2771 as_ix86_64_opt="--64"
2773 as_ix86_64_opt="-xarch=amd64"
2775 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2776 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2777 sed -e /.eh_frame/!d -e N | \
2778 grep READONLY > /dev/null; then
2779 gcc_cv_as_cfi_directive=yes
2781 gcc_cv_as_cfi_directive=no
2785 gcc_cv_as_cfi_directive=yes
2790 # no objdump, err on the side of caution
2791 gcc_cv_as_cfi_directive=no
2794 gcc_cv_as_cfi_directive=yes
2798 gcc_cv_as_cfi_directive=yes
2801 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2802 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2806 .cfi_adjust_cfa_offset 64
2808 .cfi_adjust_cfa_offset 128
2811 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2812 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2813 gcc_cv_as_cfi_advance_working=yes
2817 # no objdump, err on the side of caution
2818 gcc_cv_as_cfi_advance_working=no
2820 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2821 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2822 [`if test $gcc_cv_as_cfi_directive = yes \
2823 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2824 [Define 0/1 if your assembler supports CFI directives.])
2826 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2827 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2828 gcc_cv_as_cfi_personality_directive, ,,
2831 .cfi_personality 0, symbol
2833 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2834 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2835 then echo 1; else echo 0; fi`],
2836 [Define 0/1 if your assembler supports .cfi_personality.])
2838 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2839 gcc_cv_as_cfi_sections_directive, ,,
2841 .cfi_sections .debug_frame, .eh_frame
2845 win32 | pe | cygwin* | mingw32*)
2846 # Need to check that we generated the correct relocation for the
2847 # .debug_frame section. This was fixed for binutils 2.21.
2848 gcc_cv_as_cfi_sections_directive=no
2849 if test "x$gcc_cv_objdump" != x; then
2850 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2851 grep secrel > /dev/null; then
2852 gcc_cv_as_cfi_sections_directive=yes
2857 gcc_cv_as_cfi_sections_directive=yes
2860 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2861 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2862 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2863 then echo 1; else echo 0; fi`],
2864 [Define 0/1 if your assembler supports .cfi_sections.])
2866 # GAS versions up to and including 2.11.0 may mis-optimize
2868 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2876 .section .eh_frame,"aw",@progbits
2878 .4byte .LECIE1-.LSCIE1
2892 .4byte .LEFDE1-.LASFDE1
2894 .4byte .LASFDE1-__FRAME_BEGIN__
2902 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2903 cat > conftest.lit <<EOF
2904 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2905 0010 01000000 12000000 18000000 00000000 ................
2906 0020 08000000 04080000 0044 .........D @&t@
2908 cat > conftest.big <<EOF
2909 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2910 0010 00000001 00000012 00000018 00000000 ................
2911 0020 00000008 04000000 0844 .........D @&t@
2913 # If the assembler didn't choke, and we can objdump,
2914 # and we got the correct data, then succeed.
2915 # The text in the here-document typically retains its unix-style line
2916 # endings, while the output of objdump will use host line endings.
2917 # Therefore, use diff -b for the comparisons.
2918 if test x$gcc_cv_objdump != x \
2919 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2920 | tail -3 > conftest.got \
2921 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2922 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2924 gcc_cv_as_eh_frame=yes
2925 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2926 gcc_cv_as_eh_frame=buggy
2928 # Uh oh, what do we do now?
2929 gcc_cv_as_eh_frame=no
2932 if test $gcc_cv_as_eh_frame = buggy; then
2933 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2934 [Define if your assembler mis-optimizes .eh_frame data.])
2937 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2938 [elf,2,12,0], [--fatal-warnings],
2939 [.section .rodata.str, "aMS", @progbits, 1])
2940 if test $gcc_cv_as_shf_merge = no; then
2941 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2942 [elf,2,12,0], [--fatal-warnings],
2943 [.section .rodata.str, "aMS", %progbits, 1])
2945 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2946 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2947 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2949 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2950 [.stabs "gcc2_compiled.",60,0,0,0],,
2951 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2952 [Define if your assembler supports .stabs.])])
2954 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2955 gcc_cv_as_comdat_group,
2956 [elf,2,16,0], [--fatal-warnings],
2957 [.section .text,"axG",@progbits,.foo,comdat])
2958 if test $gcc_cv_as_comdat_group = yes; then
2959 gcc_cv_as_comdat_group_percent=no
2960 gcc_cv_as_comdat_group_group=no
2962 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2963 gcc_cv_as_comdat_group_percent,
2964 [elf,2,16,0], [--fatal-warnings],
2965 [.section .text,"axG",%progbits,.foo,comdat])
2966 if test $gcc_cv_as_comdat_group_percent = yes; then
2967 gcc_cv_as_comdat_group_group=no
2970 # Sun as uses a completely different syntax.
2975 .group foo,".text%foo",#comdat
2976 .section ".text%foo", #alloc,#execinstr,#progbits
2981 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2983 .group foo,.text%foo,#comdat
2984 .section .text%foo, "ax", @progbits
2990 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2991 gcc_cv_as_comdat_group_group,
2995 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2996 gcc_cv_as_comdat_group_group=no
3000 if test x"$ld_is_gold" = xyes; then
3002 elif test $in_tree_ld = yes ; then
3004 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3005 && test $in_tree_ld_is_elf = yes; then
3008 elif echo "$ld_ver" | grep GNU > /dev/null; then
3010 if test 0"$ld_date" -lt 20050308; then
3011 if test -n "$ld_date"; then
3012 # If there was date string, but was earlier than 2005-03-08, fail
3014 elif test "$ld_vers_major" -lt 2; then
3016 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3023 *-*-solaris2.1[1-9]*)
3025 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3026 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3029 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3030 # least ld version 1.2267.
3031 if test "$ld_vers_major" -gt 1; then
3033 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3035 elif test "$ld_vers_minor" -ge 2267; then
3040 # Assume linkers other than GNU ld don't support COMDAT group.
3046 # Allow overriding the automatic COMDAT group tests above.
3047 AC_ARG_ENABLE(comdat,
3048 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3049 [comdat_group="$enable_comdat"])
3050 if test $comdat_group = no; then
3051 gcc_cv_as_comdat_group=no
3052 gcc_cv_as_comdat_group_percent=no
3053 gcc_cv_as_comdat_group_group=no
3055 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3056 [`if test $gcc_cv_as_comdat_group = yes \
3057 || test $gcc_cv_as_comdat_group_percent = yes \
3058 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3059 [Define 0/1 if your assembler and linker support COMDAT groups.])
3061 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3062 gcc_cv_as_discriminator,
3066 .loc 1 1 0 discriminator 1],,
3067 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3068 [Define if your assembler supports the .loc discriminator sub-directive.])])
3070 # Thread-local storage - the check is heavily parameterized.
3079 .section ".tdata","awT",@progbits
3082 ldq $27,__tls_get_addr($29) !literal!1
3083 lda $16,foo($29) !tlsgd!1
3084 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3085 ldq $27,__tls_get_addr($29) !literal!2
3086 lda $16,foo($29) !tlsldm!2
3087 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3088 ldq $1,foo($29) !gotdtprel
3089 ldah $2,foo($29) !dtprelhi
3090 lda $3,foo($2) !dtprello
3091 lda $4,foo($29) !dtprel
3092 ldq $1,foo($29) !gottprel
3093 ldah $2,foo($29) !tprelhi
3094 lda $3,foo($2) !tprello
3095 lda $4,foo($29) !tprel'
3098 tls_as_opt=--fatal-warnings
3102 add_s r0,r0, @foo@tpoff'
3106 cris-*-*|crisv32-*-*)
3108 .section ".tdata","awT",@progbits
3115 tls_as_opt=--fatal-warnings
3119 .section ".tdata","awT",@progbits
3131 .section ".tdata","awT",@progbits
3135 addil LT%foo-$tls_gdidx$,gp
3136 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3139 addil LT%foo-$tls_ldidx$,gp
3141 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3142 addil LR%foo-$tls_dtpoff$,%ret0
3143 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3145 addil LT%foo-$tls_ieoff$,gp
3146 ldw RT%foo-$tls_ieoff$(%r1),%t2
3149 addil LR%foo-$tls_leoff$,%t1
3150 ldo RR%foo-$tls_leoff$(%r1),%t2'
3153 tls_as_opt=--fatal-warnings
3157 .section ".tdata","awT",%progbits
3168 i[34567]86-*-* | x86_64-*-*)
3170 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3177 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3179 .section .tdata,"awt",@progbits'
3184 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3185 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3189 .section ".tdata","awT",@progbits'
3193 tls_as_opt="--fatal-warnings"
3197 conftest_s="$conftest_s
3201 leal foo@tlsgd(,%ebx,1), %eax
3202 leal foo@tlsldm(%ebx), %eax
3203 leal foo@dtpoff(%eax), %edx
3204 movl foo@gottpoff(%ebx), %eax
3205 subl foo@gottpoff(%ebx), %eax
3206 addl foo@gotntpoff(%ebx), %eax
3207 movl foo@indntpoff, %eax
3208 movl \$foo@tpoff, %eax
3209 subl \$foo@tpoff, %eax
3210 leal foo@ntpoff(%ecx), %eax"
3213 if test x$on_solaris = xyes; then
3215 yes) tls_as_opt="$tls_as_opt --64" ;;
3216 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3219 conftest_s="$conftest_s
3223 leaq foo@tlsgd(%rip), %rdi
3224 leaq foo@tlsld(%rip), %rdi
3225 leaq foo@dtpoff(%rax), %rdx
3226 movq foo@gottpoff(%rip), %rax
3227 movq \$foo@tpoff, %rax"
3233 .section ".tdata","awT",@progbits
3236 addl r16 = @ltoff(@dtpmod(foo#)), gp
3237 addl r17 = @ltoff(@dtprel(foo#)), gp
3238 addl r18 = @ltoff(@tprel(foo#)), gp
3239 addl r19 = @dtprel(foo#), gp
3240 adds r21 = @dtprel(foo#), r13
3241 movl r23 = @dtprel(foo#)
3242 addl r20 = @tprel(foo#), gp
3243 adds r22 = @tprel(foo#), r13
3244 movl r24 = @tprel(foo#)'
3247 tls_as_opt=--fatal-warnings
3251 .section .tdata,"awT",@progbits
3255 addik r5,r20,x@TLSGD
3256 addik r5,r20,x@TLSLDM'
3259 tls_as_opt='--fatal-warnings'
3263 .section .tdata,"awT",@progbits
3267 addiu $4, $28, %tlsgd(x)
3268 addiu $4, $28, %tlsldm(x)
3269 lui $4, %dtprel_hi(x)
3270 addiu $4, $4, %dtprel_lo(x)
3271 lw $4, %gottprel(x)($28)
3272 lui $4, %tprel_hi(x)
3273 addiu $4, $4, %tprel_lo(x)'
3276 tls_as_opt='-32 --fatal-warnings'
3280 .section .tdata,"awT",@progbits
3285 move.l x@TLSGD(%a5),%a0
3286 move.l x@TLSLDM(%a5),%a0
3287 move.l x@TLSLDO(%a5),%a0
3288 move.l x@TLSIE(%a5),%a0
3289 move.l x@TLSLE(%a5),%a0'
3292 tls_as_opt='--fatal-warnings'
3296 .section ".tdata","awT",@progbits'
3299 tls_as_opt="--fatal-warnings"
3303 .section ".tdata","awT",%progbits
3307 add x0, x0, #:tlsgd_lo12:x
3312 tls_as_opt='--fatal-warnings'
3316 .extern __get_tpointer
3334 .section ".tdata","awT",@progbits
3342 addi 3,2,ld0@got@tlsgd
3348 addi 3,2,x1@got@tlsld
3354 addis 9,3,x2@dtprel@ha
3355 addi 9,9,x2@dtprel@l
3358 ld 9,x3@got@dtprel(2)
3364 tls_as_opt="-a64 --fatal-warnings"
3368 .section ".tdata","awT",@progbits
3376 addi 3,31,ld0@got@tlsgd
3378 addi 3,31,x1@got@tlsld
3381 addis 9,3,x2@dtprel@ha
3382 addi 9,9,x2@dtprel@l
3383 lwz 9,x3@got@tprel(31)
3386 addis 9,2,x2@tprel@ha
3387 addi 9,9,x2@tprel@l'
3390 tls_as_opt="-a32 --fatal-warnings"
3394 .section ".tdata","awT",@progbits
3403 l %r1,foo@GOTNTPOFF(%r12)
3404 l %r1,0(%r1):tls_load:foo
3405 bas %r14,0(%r1,%r13):tls_gdcall:foo
3406 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3409 tls_as_opt="-m31 --fatal-warnings"
3413 .section ".tdata","awT",@progbits
3421 lg %r1,foo@GOTNTPOFF(%r12)
3422 larl %r1,foo@INDNTPOFF
3423 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3424 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3427 tls_as_opt="-m64 -Aesame --fatal-warnings"
3429 sh-*-* | sh[123456789lbe]*-*-*)
3431 .section ".tdata","awT",@progbits
3441 tls_as_opt=--fatal-warnings
3445 sparc*-sun-solaris2.*)
3452 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3454 .section ".tdata",#alloc,#write,#tls'
3459 .section ".tdata","awT",@progbits'
3462 tls_as_opt="-32 --fatal-warnings"
3464 conftest_s="$conftest_s
3467 sethi %tgd_hi22(foo), %o0
3468 add %o0, %tgd_lo10(foo), %o1
3469 add %l7, %o1, %o0, %tgd_add(foo)
3470 call __tls_get_addr, %tgd_call(foo)
3471 sethi %tldm_hi22(foo), %l1
3472 add %l1, %tldm_lo10(foo), %l2
3473 add %l7, %l2, %o0, %tldm_add(foo)
3474 call __tls_get_addr, %tldm_call(foo)
3475 sethi %tldo_hix22(foo), %l3
3476 xor %l3, %tldo_lox10(foo), %l4
3477 add %o0, %l4, %l5, %tldo_add(foo)
3478 sethi %tie_hi22(foo), %o3
3479 add %o3, %tie_lo10(foo), %o3
3480 ld [%l7 + %o3], %o2, %tie_ld(foo)
3481 add %g7, %o2, %o4, %tie_add(foo)
3482 sethi %tle_hix22(foo), %l1
3483 xor %l1, %tle_lox10(foo), %o5
3484 ld [%g7 + %o5], %o1"
3488 .section ".tdata","awT",@progbits
3491 addli r0, zero, tls_gd(foo)
3492 auli r0, zero, tls_gd_ha16(foo)
3493 addli r0, r0, tls_gd_lo16(foo)
3495 addli r0, zero, tls_ie(foo)
3496 auli r0, r0, tls_ie_ha16(foo)
3497 addli r0, r0, tls_ie_lo16(foo)'
3500 tls_as_opt="--fatal-warnings"
3504 .section ".tdata","awT",@progbits
3507 shl16insli r0, zero, hw0_last_tls_gd(foo)
3508 shl16insli r0, zero, hw1_last_tls_gd(foo)
3509 shl16insli r0, r0, hw0_tls_gd(foo)
3511 shl16insli r0, zero, hw1_last_tls_ie(foo)
3512 shl16insli r0, r0, hw0_tls_ie(foo)'
3515 tls_as_opt="--fatal-warnings"
3519 .section ".tdata","awT",@progbits
3522 movi a8, foo@TLSFUNC
3523 movi a10, foo@TLSARG
3524 callx8.tls a8, foo@TLSCALL'
3531 if test "x$enable_tls" = xno ; then
3532 : # TLS explicitly disabled.
3533 elif test "x$enable_tls" = xyes ; then
3534 set_have_as_tls=yes # TLS explicitly enabled.
3535 elif test -z "$tls_first_major"; then
3536 : # If we don't have a check, assume no support.
3538 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3539 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3540 [set_have_as_tls=yes])
3542 if test $set_have_as_tls = yes ; then
3543 AC_DEFINE(HAVE_AS_TLS, 1,
3544 [Define if your assembler and linker support thread-local storage.])
3547 # Target-specific assembler checks.
3549 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3550 gcc_cv_ld_static_dynamic=no
3551 gcc_cv_ld_static_option='-Bstatic'
3552 gcc_cv_ld_dynamic_option='-Bdynamic'
3553 if test $in_tree_ld = yes ; then
3554 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3555 gcc_cv_ld_static_dynamic=yes
3557 elif test x$gcc_cv_ld != x; then
3558 # Check if linker supports -Bstatic/-Bdynamic option
3559 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3560 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3561 gcc_cv_ld_static_dynamic=yes
3564 # AIX ld uses -b flags
3565 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3566 gcc_cv_ld_static_dynamic=yes
3567 gcc_cv_ld_static_option="-bstatic"
3568 gcc_cv_ld_dynamic_option="-bdynamic"
3570 # HP-UX ld uses -a flags to select between shared and archive.
3572 if test x"$gnu_ld" = xno; then
3573 gcc_cv_ld_static_dynamic=yes
3574 gcc_cv_ld_static_option="-aarchive_shared"
3575 gcc_cv_ld_dynamic_option="-adefault"
3578 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3580 gcc_cv_ld_static_dynamic=yes
3585 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3586 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3587 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3588 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3589 [Define to the linker option to disable use of shared objects.])
3590 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3591 [Define to the linker option to enable use of shared objects.])
3593 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3595 if test x"$demangler_in_ld" = xyes; then
3596 AC_MSG_CHECKING(linker --demangle support)
3597 gcc_cv_ld_demangle=no
3598 if test $in_tree_ld = yes; then
3599 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3600 gcc_cv_ld_demangle=yes
3602 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3603 # Check if the GNU linker supports --demangle option
3604 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3605 gcc_cv_ld_demangle=yes
3608 if test x"$gcc_cv_ld_demangle" = xyes; then
3609 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3610 [Define if your linker supports --demangle option.])
3612 AC_MSG_RESULT($gcc_cv_ld_demangle)
3615 AC_MSG_CHECKING(linker plugin support)
3617 if test -f liblto_plugin.la; then
3618 save_ld_ver="$ld_ver"
3619 save_ld_vers_major="$ld_vers_major"
3620 save_ld_vers_minor="$ld_vers_minor"
3621 save_ld_is_gold="$ld_is_gold"
3625 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3627 # FIXME: ld_is_gold?
3628 ld_vers_major="$gcc_cv_gld_major_version"
3629 ld_vers_minor="$gcc_cv_gld_minor_version"
3631 # Determine plugin linker version.
3632 # FIXME: Partial duplicate from above, generalize.
3634 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3635 if echo "$ld_ver" | grep GNU > /dev/null; then
3636 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3638 ld_vers=`echo $ld_ver | sed -n \
3639 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3641 ld_vers=`echo $ld_ver | sed -n \
3642 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3644 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3645 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3650 # Determine plugin support.
3651 if echo "$ld_ver" | grep GNU > /dev/null; then
3652 # Require GNU ld or gold 2.21+ for plugin support by default.
3653 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3655 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3656 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3661 ld_ver="$save_ld_ver"
3662 ld_vers_major="$save_ld_vers_major"
3663 ld_vers_minor="$save_ld_vers_minor"
3664 ld_is_gold="$save_ld_is_gold"
3666 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3667 [Define to the level of your linker's plugin support.])
3668 AC_MSG_RESULT($gcc_cv_lto_plugin)
3672 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3673 [-mabi=lp64], [.text],,,)
3674 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3675 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3676 [Define if your assembler supports the -mabi option.])
3678 if test x$with_abi = xilp32; then
3679 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3680 Upgrade the Assembler.])
3682 if test x"$with_multilib_list" = xdefault; then
3683 TM_MULTILIB_CONFIG=lp64
3685 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3686 for aarch64_multilib in ${aarch64_multilibs}; do
3687 case ${aarch64_multilib} in
3689 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3690 Upgrade the Assembler.])
3698 # Check if we have binutils support for relocations types needed by -fpic
3699 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3702 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3703 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3704 [Define if your assembler supports relocs needed by -fpic.])])
3705 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3706 AC_ARG_ENABLE(fix-cortex-a53-835769,
3708 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3709 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3710 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3711 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3716 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3721 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3722 Valid choices are 'yes' and 'no'.])
3728 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3729 AC_ARG_ENABLE(fix-cortex-a53-843419,
3731 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3732 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3733 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3734 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3739 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3744 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3745 Valid choices are 'yes' and 'no'.])
3753 # All TARGET_ABI_OSF targets.
3754 alpha*-*-linux* | alpha*-*-*bsd*)
3755 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3756 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3759 extbl $3, $2, $3 !lituse_bytoff!1
3760 ldq $2, a($29) !literal!1
3761 ldq $4, b($29) !literal!2
3762 ldq_u $3, 0($2) !lituse_base!1
3763 ldq $27, f($29) !literal!5
3764 jsr $26, ($27), f !lituse_jsr!5
3765 ldah $29, 0($26) !gpdisp!3
3766 lda $0, c($29) !gprel
3767 ldah $1, d($29) !gprelhigh
3768 lda $1, d($1) !gprellow
3769 lda $29, 0($29) !gpdisp!3],,
3770 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3771 [Define if your assembler supports explicit relocations.])])
3772 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3773 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3776 ldq $27, a($29) !literal!1
3777 jsr $26, ($27), a !lituse_jsrdirect!1],,
3778 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3779 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3783 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3784 [--mlink-relax], [.text],,
3785 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3786 [Define if your avr assembler supports --mlink-relax option.])])
3788 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3790 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3791 [Define if your avr assembler supports -mrmw option.])])
3795 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3796 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3797 [-no-mul-bug-abort], [.text],,
3798 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3799 [Define if your assembler supports the -no-mul-bug-abort option.])])
3803 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3804 [.register %g2, #scratch],,
3805 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3806 [Define if your assembler supports .register.])])
3808 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3810 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3811 [Define if your assembler supports -relax option.])])
3813 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3814 gcc_cv_as_sparc_gotdata_op,,
3821 sethi %gdop_hix22(foo), %g1
3822 xor %g1, %gdop_lox10(foo), %g1
3823 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3824 [if test x$gcc_cv_ld != x \
3825 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3826 if test x$gcc_cv_objdump != x; then
3827 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3828 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3829 gcc_cv_as_sparc_gotdata_op=no
3831 gcc_cv_as_sparc_gotdata_op=yes
3836 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3837 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3839 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3840 gcc_cv_as_sparc_ua_pcrel,,
3848 .uaword %r_disp32(foo)],
3849 [if test x$gcc_cv_ld != x \
3850 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3851 gcc_cv_as_sparc_ua_pcrel=yes
3854 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3855 [Define if your assembler and linker support unaligned PC relative relocs.])
3857 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3858 gcc_cv_as_sparc_ua_pcrel_hidden,,
3863 .uaword %r_disp32(foo)
3864 .byte 0x32, 0x33, 0x34
3869 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3870 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3871 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3872 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3873 if $gcc_cv_objdump -R conftest 2> /dev/null \
3874 | grep 'DISP32' > /dev/null 2>&1; then
3877 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3881 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3882 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3883 ]) # unaligned pcrel relocs
3885 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3886 gcc_cv_as_sparc_offsetable_lo10,,
3889 or %g1, %lo(ab) + 12, %g1
3890 or %g1, %lo(ab + 12), %g1],
3891 [if test x$gcc_cv_objdump != x \
3892 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3893 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3894 gcc_cv_as_sparc_offsetable_lo10=yes
3896 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3897 [Define if your assembler supports offsetable %lo().])])
3899 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3900 gcc_cv_as_sparc_fmaf,,
3903 .register %g2, #scratch
3904 .register %g3, #scratch
3906 fmaddd %f0, %f2, %f4, %f6
3907 addxccc %g1, %g2, %g3
3908 fsrl32 %f2, %f4, %f8
3909 fnaddd %f10, %f12, %f14],,
3910 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3911 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3913 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3914 gcc_cv_as_sparc_sparc4,,
3917 .register %g2, #scratch
3918 .register %g3, #scratch
3921 1: cwbneg %g2, %g3, 1f
3924 aes_kexpand0 %f4, %f6, %f8
3925 des_round %f38, %f40, %f42, %f44
3926 camellia_f %f54, %f56, %f58, %f60
3927 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3928 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3929 [Define if your assembler supports SPARC4 instructions.])])
3931 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3932 gcc_cv_as_sparc_sparc5,,
3935 .register %g2, #scratch
3936 .register %g3, #scratch
3939 fpadd8 %f0, %f2, %f4],,
3940 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3941 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3943 gcc_GAS_CHECK_FEATURE([LEON instructions],
3944 gcc_cv_as_sparc_leon,,
3947 .register %g2, #scratch
3948 .register %g3, #scratch
3952 casa [[%g2]] 0xb, %g3, %g1],,
3953 [AC_DEFINE(HAVE_AS_LEON, 1,
3954 [Define if your assembler supports LEON instructions.])])
3958 i[34567]86-*-* | x86_64-*-*)
3962 # Full C++ conformance when using a shared libstdc++-v3 requires some
3963 # support from the Cygwin DLL, which in more recent versions exports
3964 # wrappers to aid in interposing and redirecting operators new, delete,
3965 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3966 # are configuring for a version of Cygwin that exports the wrappers.
3967 if test x$host = x$target && test x$host_cpu = xi686; then
3968 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3970 # Can't check presence of libc functions during cross-compile, so
3971 # we just have to assume we're building for an up-to-date target.
3972 gcc_ac_cygwin_dll_wrappers=yes
3974 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3975 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3976 [Define if you want to generate code by default that assumes that the
3977 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3980 cygwin* | pe | mingw32*)
3981 # Recent binutils allows the three-operand form of ".comm" on PE. This
3982 # definition is used unconditionally to initialise the default state of
3983 # the target option variable that governs usage of the feature.
3984 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3985 [2,19,52],,[.comm foo,1,32])
3986 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3987 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3988 [Define if your assembler supports specifying the alignment
3989 of objects allocated using the GAS .comm command.])
3990 # Used for DWARF 2 in PE
3991 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3992 gcc_cv_as_ix86_pe_secrel32,
3998 [if test x$gcc_cv_ld != x \
3999 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4000 gcc_cv_as_ix86_pe_secrel32=yes
4003 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4004 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4005 # Test if the assembler supports the extended form of the .section
4006 # directive that specifies section alignment. LTO support uses this,
4007 # but normally only after installation, so we warn but don't fail the
4008 # configure if LTO is enabled but the assembler does not support it.
4009 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4010 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4011 if test x$gcc_cv_as_section_has_align != xyes; then
4012 case ",$enable_languages," in
4014 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4021 # Test if the assembler supports the section flag 'e' for specifying
4022 # an excluded section.
4023 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4024 [2,22,51], [--fatal-warnings],
4027 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4028 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4029 [Define if your assembler supports specifying the section flag e.])
4031 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4032 gcc_cv_as_ix86_filds,,,
4033 [filds (%ebp); fists (%ebp)],,
4034 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4035 [Define if your assembler uses filds and fists mnemonics.])])
4037 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4038 gcc_cv_as_ix86_fildq,,,
4039 [fildq (%ebp); fistpq (%ebp)],,
4040 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4041 [Define if your assembler uses fildq and fistq mnemonics.])])
4043 gcc_GAS_CHECK_FEATURE([cmov syntax],
4044 gcc_cv_as_ix86_cmov_sun_syntax,,,
4045 [cmovl.l %edx, %eax],,
4046 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4047 [Define if your assembler supports the Sun syntax for cmov.])])
4049 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4050 gcc_cv_as_ix86_ffreep,,,
4052 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4053 [Define if your assembler supports the ffreep mnemonic.])])
4055 gcc_GAS_CHECK_FEATURE([.quad directive],
4056 gcc_cv_as_ix86_quad,,,
4058 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4059 [Define if your assembler supports the .quad directive.])])
4061 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4062 gcc_cv_as_ix86_sahf,,,
4065 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4066 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4068 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4069 gcc_cv_as_ix86_interunit_movq,,,
4073 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4074 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4075 [Define if your assembler supports interunit movq mnemonic.])
4077 gcc_GAS_CHECK_FEATURE([hle prefixes],
4078 gcc_cv_as_ix86_hle,,,
4079 [lock xacquire cmpxchg %esi, (%ecx)],,
4080 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4081 [Define if your assembler supports HLE prefixes.])])
4083 gcc_GAS_CHECK_FEATURE([swap suffix],
4084 gcc_cv_as_ix86_swap,,,
4085 [movl.s %esp, %ebp],,
4086 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4087 [Define if your assembler supports the swap suffix.])])
4089 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4090 gcc_cv_as_ix86_diff_sect_delta,,,
4098 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4099 [Define if your assembler supports the subtraction of symbols in different sections.])])
4101 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4102 gcc_cv_as_ix86_rep_lock_prefix,,,
4108 lock addl %edi, (%eax,%esi)
4109 lock orl $0, (%esp)],,
4110 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4111 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4113 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4114 gcc_cv_as_ix86_ud2,,,
4116 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4117 [Define if your assembler supports the 'ud2' mnemonic.])])
4119 # Enforce 32-bit output with gas and gld.
4120 if test x$gas = xyes; then
4121 as_ix86_gas_32_opt="--32"
4123 if echo "$ld_ver" | grep GNU > /dev/null; then
4124 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4125 ld_ix86_gld_32_opt="-melf_i386_sol2"
4127 ld_ix86_gld_32_opt="-melf_i386"
4131 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4132 gcc_cv_as_ix86_tlsgdplt,,
4133 [$as_ix86_gas_32_opt],
4134 [call tls_gd@tlsgdplt],
4135 [if test x$gcc_cv_ld != x \
4136 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4137 gcc_cv_as_ix86_tlsgdplt=yes
4140 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4141 [Define if your assembler and linker support @tlsgdplt.])])
4144 .section .tdata,"aw'$tls_section_flag'",@progbits
4146 .section .text,"ax",@progbits
4147 call tls_ld@tlsldmplt'
4149 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4150 gcc_cv_as_ix86_tlsldmplt,,
4151 [$as_ix86_gas_32_opt],
4153 [if test x$gcc_cv_ld != x \
4154 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4155 gcc_cv_as_ix86_tlsldmplt=yes
4158 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4159 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4160 [Define to 1 if your assembler and linker support @tlsldmplt.])
4163 .section .text,"ax",@progbits
4165 .type _start, @function
4167 leal value@tlsldm(%ebx), %eax
4168 call ___tls_get_addr@plt
4170 .section .tdata,"aw'$tls_section_flag'",@progbits
4171 .type value, @object
4173 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4174 gcc_cv_as_ix86_tlsldm,,
4175 [$as_ix86_gas_32_opt],
4177 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4178 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4179 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4180 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4181 gcc_cv_as_ix86_tlsldm=yes
4185 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4186 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4187 [Define to 1 if your assembler and linker support @tlsldm.])
4198 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4199 gcc_cv_as_ix86_got32x,,
4200 [$as_ix86_gas_32_opt],
4202 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4203 && test x$gcc_cv_readelf != x \
4204 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4205 | grep R_386_GOT32X > /dev/null 2>&1 \
4206 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4207 if $gcc_cv_objdump -dw conftest 2>&1 \
4208 | grep 0xffffff > /dev/null 2>&1; then
4209 gcc_cv_as_ix86_got32x=no
4211 gcc_cv_as_ix86_got32x=yes
4215 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4216 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4217 [Define 0/1 if your assembler and linker support @GOT.])
4219 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4220 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4221 [$as_ix86_gas_32_opt],
4227 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4228 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4229 [Define true if the assembler supports '.long foo@GOTOFF'.])
4232 .section .text,"ax",@progbits
4234 .type _start, @function
4236 leal ld@tlsldm(%ecx), %eax
4237 call *___tls_get_addr@GOT(%ecx)
4238 leal gd@tlsgd(%ecx), %eax
4239 call *___tls_get_addr@GOT(%ecx)
4241 .section .tdata,"aw'$tls_section_flag'",@progbits
4249 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4250 gcc_cv_as_ix86_tls_get_addr_via_got,,
4251 [$as_ix86_gas_32_opt],
4253 [if test x$gcc_cv_ld != x \
4254 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4255 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4258 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4259 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4260 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4264 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4265 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4267 addl r15 = @ltoffx(x#), gp
4269 ld8.mov r16 = [[r15]], x#],,
4270 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4271 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4279 gcc_GAS_CHECK_FEATURE([.machine directive support],
4280 gcc_cv_as_machine_directive,,,
4281 [ .machine ppc7400])
4282 if test x$gcc_cv_as_machine_directive != xyes; then
4283 echo "*** This target requires an assembler supporting \".machine\"" >&2
4284 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4285 test x$build = x$target && exit 1
4291 *-*-aix*) conftest_s=' .machine "pwr5"
4294 *-*-darwin*) conftest_s=' .text
4296 *) conftest_s=' .machine power4
4301 gcc_GAS_CHECK_FEATURE([mfcr field support],
4302 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4304 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4305 [Define if your assembler supports mfcr field.])])
4308 *-*-aix*) conftest_s=' .machine "pwr5"
4311 *) conftest_s=' .machine power5
4316 gcc_GAS_CHECK_FEATURE([popcntb support],
4317 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4319 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4320 [Define if your assembler supports popcntb field.])])
4323 *-*-aix*) conftest_s=' .machine "pwr5x"
4326 *) conftest_s=' .machine power5
4331 gcc_GAS_CHECK_FEATURE([fp round support],
4332 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4334 [AC_DEFINE(HAVE_AS_FPRND, 1,
4335 [Define if your assembler supports fprnd.])])
4338 *-*-aix*) conftest_s=' .machine "pwr6"
4341 *) conftest_s=' .machine power6
4346 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4347 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4349 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4350 [Define if your assembler supports mffgpr and mftgpr.])])
4353 *-*-aix*) conftest_s=' .csect .text[[PR]]
4355 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4359 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4360 *) conftest_s=' .text
4362 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4365 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4366 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4368 [AC_DEFINE(HAVE_AS_REL16, 1,
4369 [Define if your assembler supports R_PPC_REL16 relocs.])])
4372 *-*-aix*) conftest_s=' .machine "pwr6"
4375 *) conftest_s=' .machine power6
4380 gcc_GAS_CHECK_FEATURE([compare bytes support],
4381 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4383 [AC_DEFINE(HAVE_AS_CMPB, 1,
4384 [Define if your assembler supports cmpb.])])
4387 *-*-aix*) conftest_s=' .machine "pwr6"
4390 *) conftest_s=' .machine power6
4395 gcc_GAS_CHECK_FEATURE([decimal float support],
4396 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4398 [AC_DEFINE(HAVE_AS_DFP, 1,
4399 [Define if your assembler supports DFP instructions.])])
4402 *-*-aix*) conftest_s=' .machine "pwr7"
4405 *) conftest_s=' .machine power7
4410 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4411 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4413 [AC_DEFINE(HAVE_AS_VSX, 1,
4414 [Define if your assembler supports VSX instructions.])])
4417 *-*-aix*) conftest_s=' .machine "pwr7"
4420 *) conftest_s=' .machine power7
4425 gcc_GAS_CHECK_FEATURE([popcntd support],
4426 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4428 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4429 [Define if your assembler supports POPCNTD instructions.])])
4432 *-*-aix*) conftest_s=' .machine "pwr8"
4433 .csect .text[[PR]]';;
4434 *) conftest_s=' .machine power8
4438 gcc_GAS_CHECK_FEATURE([power8 support],
4439 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4441 [AC_DEFINE(HAVE_AS_POWER8, 1,
4442 [Define if your assembler supports POWER8 instructions.])])
4445 *-*-aix*) conftest_s=' .machine "pwr9"
4446 .csect .text[[PR]]';;
4447 *) conftest_s=' .machine power9
4451 gcc_GAS_CHECK_FEATURE([power9 support],
4452 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4454 [AC_DEFINE(HAVE_AS_POWER9, 1,
4455 [Define if your assembler supports POWER9 instructions.])])
4458 *-*-aix*) conftest_s=' .csect .text[[PR]]
4460 *) conftest_s=' .text
4464 gcc_GAS_CHECK_FEATURE([lwsync support],
4465 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4467 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4468 [Define if your assembler supports LWSYNC instructions.])])
4471 *-*-aix*) conftest_s=' .machine "476"
4474 *) conftest_s=' .machine "476"
4479 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4480 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4482 [AC_DEFINE(HAVE_AS_DCI, 1,
4483 [Define if your assembler supports the DCI/ICI instructions.])])
4485 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4486 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4487 [.gnu_attribute 4,1],,
4488 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4489 [Define if your assembler supports .gnu_attribute.])])
4491 gcc_GAS_CHECK_FEATURE([tls marker support],
4492 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4493 [ bl __tls_get_addr(x@tlsgd)],,
4494 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4495 [Define if your assembler supports arg info for __tls_get_addr.])])
4497 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4498 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4499 [ .reloc .,R_PPC64_ENTRY; nop],,
4500 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4501 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4505 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4506 gcc_cv_as_aix_ref, [2,21,0],,
4507 [ .csect stuff[[rw]]
4513 [AC_DEFINE(HAVE_AS_REF, 1,
4514 [Define if your assembler supports .ref])])
4516 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4517 gcc_cv_as_aix_dwloc, [2,21,0],,
4522 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4523 [Define if your assembler supports AIX debug frame section label reference.])])
4529 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4530 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4531 [ lw $4,%gp_rel(foo)($4)],,
4532 [if test x$target_cpu_default = x
4533 then target_cpu_default=MASK_EXPLICIT_RELOCS
4534 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4537 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4538 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4539 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4540 [Define if the assembler understands -mno-shared.])])
4542 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4543 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4544 [.gnu_attribute 4,1],,
4545 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4546 [Define if your assembler supports .gnu_attribute.])])
4548 gcc_GAS_CHECK_FEATURE([.module support],
4549 gcc_cv_as_mips_dot_module,,[-32],
4552 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4553 [Define if your assembler supports .module.])])
4554 if test x$gcc_cv_as_mips_dot_module = xno \
4555 && test x$with_fp_32 != x; then
4557 [Requesting --with-fp-32= requires assembler support for .module.])
4560 gcc_GAS_CHECK_FEATURE([.micromips support],
4561 gcc_cv_as_micromips_support,,[--fatal-warnings],
4563 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4564 [Define if your assembler supports the .set micromips directive])])
4566 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4567 gcc_cv_as_mips_dtprelword, [2,18,0],,
4568 [.section .tdata,"awT",@progbits
4572 .dtprelword x+0x8000],,
4573 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4574 [Define if your assembler supports .dtprelword.])])
4576 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4577 gcc_cv_as_mips_dspr1_mult,,,
4587 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4588 [Define if your assembler supports DSPR1 mult.])])
4590 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4591 gcc_cv_as_ld_jalr_reloc=no
4592 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4593 if test $in_tree_ld = yes ; then
4594 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4595 && test $in_tree_ld_is_elf = yes; then
4596 gcc_cv_as_ld_jalr_reloc=yes
4598 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4599 echo ' .ent x' > conftest.s
4600 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4601 echo ' lw $25,%call16(y)($28)' >> conftest.s
4602 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4603 echo '1: jalr $25' >> conftest.s
4604 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4605 echo '1: jalr $25' >> conftest.s
4606 echo ' .end x' >> conftest.s
4607 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4608 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4609 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4610 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4611 gcc_cv_as_ld_jalr_reloc=yes
4617 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4618 if test x$target_cpu_default = x; then
4619 target_cpu_default=MASK_RELAX_PIC_CALLS
4621 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4624 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4626 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4627 [gcc_cv_ld_mips_personality_relaxation],
4628 [gcc_cv_ld_mips_personality_relaxation=no
4629 if test $in_tree_ld = yes ; then
4630 if test "$gcc_cv_gld_major_version" -eq 2 \
4631 -a "$gcc_cv_gld_minor_version" -ge 21 \
4632 -o "$gcc_cv_gld_major_version" -gt 2; then
4633 gcc_cv_ld_mips_personality_relaxation=yes
4635 elif test x$gcc_cv_as != x \
4636 -a x$gcc_cv_ld != x \
4637 -a x$gcc_cv_readelf != x ; then
4638 cat > conftest.s <<EOF
4640 .cfi_personality 0x80,indirect_ptr
4647 .section .data,"aw",@progbits
4651 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4652 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4653 if $gcc_cv_readelf -d conftest 2>&1 \
4654 | grep TEXTREL > /dev/null 2>&1; then
4656 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4657 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4660 gcc_cv_ld_mips_personality_relaxation=yes
4664 rm -f conftest.s conftest.o conftest])
4665 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4666 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4667 [Define if your linker can relax absolute .eh_frame personality
4668 pointers into PC-relative form.])
4671 gcc_GAS_CHECK_FEATURE([-mnan= support],
4672 gcc_cv_as_mips_nan,,
4674 [AC_DEFINE(HAVE_AS_NAN, 1,
4675 [Define if the assembler understands -mnan=.])])
4676 if test x$gcc_cv_as_mips_nan = xno \
4677 && test x$with_nan != x; then
4679 [Requesting --with-nan= requires assembler support for -mnan=])
4683 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4684 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4685 [.gnu_attribute 8,1],,
4686 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4687 [Define if your assembler supports .gnu_attribute.])])
4688 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4689 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4694 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4695 [Define if your assembler supports .machine and .machinemode.])])
4696 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4697 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4698 [ .machine z13+vx ],,
4699 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4700 [Define if your assembler supports architecture modifiers.])])
4704 # Mips and HP-UX need the GNU assembler.
4705 # Linux on IA64 might be able to use the Intel assembler.
4708 mips*-*-* | *-*-hpux* )
4709 if test x$gas_flag = xyes \
4710 || test x"$host" != x"$build" \
4711 || test ! -x "$gcc_cv_as" \
4712 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4715 echo "*** This configuration requires the GNU assembler" >&2
4721 # ??? Not all targets support dwarf2 debug_line, even within a version
4722 # of gas. Moreover, we need to emit a valid instruction to trigger any
4723 # info to the output file. So, as supported targets are added to gas 2.11,
4724 # add some instruction here to (also) show we expect this might work.
4725 # ??? Once 2.11 is released, probably need to add first known working
4726 # version to the per-target configury.
4728 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4729 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4730 | visium | xstormy16 | xtensa)
4740 if test x"$insn" != x; then
4742 .file 1 \"conftest.s\"
4745 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4746 gcc_cv_as_dwarf2_debug_line,
4747 [elf,2,11,0],, [$conftest_s],
4748 [if test x$gcc_cv_objdump != x \
4749 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4750 | grep debug_line > /dev/null 2>&1; then
4751 gcc_cv_as_dwarf2_debug_line=yes
4754 # The .debug_line file table must be in the exact order that
4755 # we specified the files, since these indices are also used
4756 # by DW_AT_decl_file. Approximate this test by testing if
4757 # the assembler bitches if the same index is assigned twice.
4758 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4759 gcc_cv_as_dwarf2_file_buggy,,,
4763 if test $gcc_cv_as_dwarf2_debug_line = yes \
4764 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4765 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4766 [Define if your assembler supports dwarf2 .file/.loc directives,
4767 and preserves file table indices exactly as given.])
4770 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4771 gcc_cv_as_gdwarf2_flag,
4772 [elf,2,11,0], [--gdwarf2], [$insn],,
4773 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4774 [Define if your assembler supports the --gdwarf2 option.])])
4776 gcc_GAS_CHECK_FEATURE([--gstabs option],
4777 gcc_cv_as_gstabs_flag,
4778 [elf,2,11,0], [--gstabs], [$insn],,
4779 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4780 [Define if your assembler supports the --gstabs option.])])
4782 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4783 gcc_cv_as_debug_prefix_map_flag,
4784 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4785 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4786 [Define if your assembler supports the --debug-prefix-map option.])])
4789 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4790 gcc_cv_as_compress_debug,,,,
4791 [# gas compiled without zlib cannot compress debug sections and warns
4792 # about it, but still exits successfully. So check for this, too.
4793 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4795 gcc_cv_as_compress_debug=0
4796 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4797 # defaulting to the ELF gABI format.
4798 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4800 gcc_cv_as_compress_debug=2
4801 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4802 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4803 # Before binutils 2.26, gas only supported --compress-debug-options and
4804 # emitted the traditional GNU format.
4805 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4807 gcc_cv_as_compress_debug=1
4808 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4809 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4811 gcc_cv_as_compress_debug=0
4813 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4814 [Define to the level of your assembler's compressed debug section support.])
4815 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4816 [Define to the assembler option to enable compressed debug sections.])
4817 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4818 [Define to the assembler option to disable compressed debug sections.])
4820 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4823 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4824 [Define if your assembler supports .lcomm with an alignment field.])])
4826 if test x$with_sysroot = x && test x$host = x$target \
4827 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4828 && test "$prefix" != "NONE"; then
4829 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4830 [Define to PREFIX/include if cpp should also search that directory.])
4833 # Determine the version of glibc, if any, used on the target.
4834 AC_MSG_CHECKING([for target glibc version])
4835 AC_ARG_WITH([glibc-version],
4836 [AS_HELP_STRING([--with-glibc-version=M.N],
4837 [assume GCC used with glibc version M.N or later])], [
4838 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4839 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4840 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4842 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4844 glibc_version_major=0
4845 glibc_version_minor=0
4846 [if test -f $target_header_dir/features.h \
4847 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4848 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4849 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4850 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4852 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4853 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4854 [GNU C Library major version number used on the target, or 0.])
4855 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4856 [GNU C Library minor version number used on the target, or 0.])
4858 AC_ARG_ENABLE(gnu-unique-object,
4859 [AS_HELP_STRING([--enable-gnu-unique-object],
4860 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4861 [case $enable_gnu_unique_object in
4863 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4864 Valid choices are 'yes' and 'no'.]) ;;
4866 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4868 [.type foo, '$target_type_format_char'gnu_unique_object],,
4869 # We need to unquote above to to use the definition from config.gcc.
4870 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4871 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4873 if test x$enable_gnu_unique_object = xyes; then
4874 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4875 [Define if your assembler supports @gnu_unique_object.])
4878 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4879 [gcc_cv_as_line_zero],
4880 [gcc_cv_as_line_zero=no
4881 if test $in_tree_gas = yes; then
4882 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4883 elif test "x$gcc_cv_as" != x; then
4884 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4885 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4886 test "x`cat conftest.out`" = x
4888 gcc_cv_as_line_zero=yes
4890 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4891 cat conftest.s >&AS_MESSAGE_LOG_FD
4892 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4893 cat conftest.out >&AS_MESSAGE_LOG_FD
4895 rm -f conftest.o conftest.s conftest.out
4897 if test "x$gcc_cv_as_line_zero" = xyes; then
4898 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4899 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4902 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4903 gcc_cv_ld_eh_frame_hdr=no
4904 if test $in_tree_ld = yes ; then
4905 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4906 && test $in_tree_ld_is_elf = yes; then
4907 gcc_cv_ld_eh_frame_hdr=yes
4909 elif test x$gcc_cv_ld != x; then
4910 if echo "$ld_ver" | grep GNU > /dev/null; then
4911 # Check if linker supports --eh-frame-hdr option
4912 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4913 gcc_cv_ld_eh_frame_hdr=yes
4918 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4919 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4920 gcc_cv_ld_eh_frame_hdr=yes
4926 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4927 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4928 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4929 [Define if your linker supports .eh_frame_hdr.])
4931 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4933 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4934 gcc_cv_ld_eh_frame_ciev3=no
4935 if test $in_tree_ld = yes ; then
4936 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4937 && test $in_tree_ld_is_elf = yes; then
4938 gcc_cv_ld_eh_frame_ciev3=yes
4940 elif test x$gcc_cv_ld != x; then
4941 if echo "$ld_ver" | grep GNU > /dev/null; then
4942 gcc_cv_ld_eh_frame_ciev3=yes
4943 if test 0"$ld_date" -lt 20040513; then
4944 if test -n "$ld_date"; then
4945 # If there was date string, but was earlier than 2004-05-13, fail
4946 gcc_cv_ld_eh_frame_ciev3=no
4947 elif test "$ld_vers_major" -lt 2; then
4948 gcc_cv_ld_eh_frame_ciev3=no
4949 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4950 gcc_cv_ld_eh_frame_ciev3=no
4956 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4957 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4958 gcc_cv_ld_eh_frame_ciev3=yes
4964 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4965 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4966 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4967 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4969 AC_MSG_CHECKING(linker position independent executable support)
4971 if test $in_tree_ld = yes ; then
4973 # Full PIE support on Solaris was only introduced in gld 2.26.
4974 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4975 *) gcc_gld_pie_min_version=15 ;;
4977 if test "$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 \
4978 && test $in_tree_ld_is_elf = yes; then
4981 elif test x$gcc_cv_ld != x; then
4982 # Check if linker supports -pie option
4983 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4987 if echo "$ld_ver" | grep GNU > /dev/null \
4988 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4995 *-*-solaris2.1[[1-9]]*)
4996 # Solaris 11.x and Solaris 12 added PIE support.
4997 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5004 if test x"$gcc_cv_ld_pie" = xyes; then
5005 AC_DEFINE(HAVE_LD_PIE, 1,
5006 [Define if your linker supports PIE option.])
5008 AC_MSG_RESULT($gcc_cv_ld_pie)
5010 AC_MSG_CHECKING(linker PIE support with copy reloc)
5011 gcc_cv_ld_pie_copyreloc=no
5012 if test $gcc_cv_ld_pie = yes ; then
5013 if test $in_tree_ld = yes ; then
5014 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5015 gcc_cv_ld_pie_copyreloc=yes
5017 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5018 # Check if linker supports -pie option with copy reloc
5020 i?86-*-linux* | x86_64-*-linux*)
5021 cat > conftest1.s <<EOF
5024 .type a_glob, @object
5029 cat > conftest2.s <<EOF
5032 .type main, @function
5034 movl %eax, a_glob(%rip)
5037 .section .data.rel,"aw",@progbits
5042 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5043 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5044 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5045 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5046 gcc_cv_ld_pie_copyreloc=yes
5048 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5053 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5054 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5055 [Define 0/1 if your linker supports -pie option with copy reloc.])
5056 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5058 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5059 gcc_cv_ld_eh_gc_sections=no
5060 if test $in_tree_ld = yes ; then
5061 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5062 && test $in_tree_ld_is_elf = yes; then
5063 gcc_cv_ld_eh_gc_sections=yes
5065 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5066 cat > conftest.s <<EOF
5069 .type _start, @function
5072 .size _start, .-_start
5073 .section .text.foo,"ax",@progbits
5074 .type foo, @function
5078 .section .gcc_except_table.foo,"a",@progbits
5081 .section .eh_frame,"a",@progbits
5084 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5085 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5086 | grep "gc-sections option ignored" > /dev/null; then
5087 gcc_cv_ld_eh_gc_sections=no
5088 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5089 | grep gcc_except_table > /dev/null; then
5090 gcc_cv_ld_eh_gc_sections=yes
5091 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5092 if test x$gcc_cv_as_comdat_group != xyes; then
5093 gcc_cv_ld_eh_gc_sections=no
5094 cat > conftest.s <<EOF
5097 .type _start, @function
5100 .size _start, .-_start
5101 .section .gnu.linkonce.t.foo,"ax",@progbits
5102 .type foo, @function
5106 .section .gcc_except_table.foo,"a",@progbits
5109 .section .eh_frame,"a",@progbits
5112 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5113 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5114 | grep "gc-sections option ignored" > /dev/null; then
5115 gcc_cv_ld_eh_gc_sections=no
5116 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5117 | grep gcc_except_table > /dev/null; then
5118 gcc_cv_ld_eh_gc_sections=yes
5124 rm -f conftest.s conftest.o conftest
5128 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5129 gcc_cv_ld_eh_gc_sections=no
5132 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5133 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5134 [Define if your linker supports garbage collection of
5135 sections in presence of EH frames.])
5137 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5139 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5140 gcc_cv_ld_eh_gc_sections_bug=no
5141 if test $in_tree_ld = yes ; then
5142 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5143 && test $in_tree_ld_is_elf = yes; then
5144 gcc_cv_ld_eh_gc_sections_bug=yes
5146 elif test x$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
5147 gcc_cv_ld_eh_gc_sections_bug=yes
5148 cat > conftest.s <<EOF
5151 .type _start, @function
5154 .size _start, .-_start
5155 .section .text.startup.foo,"ax",@progbits
5156 .type foo, @function
5160 .section .gcc_except_table.foo,"a",@progbits
5163 .section .eh_frame,"a",@progbits
5166 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5167 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5168 | grep "gc-sections option ignored" > /dev/null; then
5170 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5171 | grep gcc_except_table > /dev/null; then
5172 gcc_cv_ld_eh_gc_sections_bug=no
5175 rm -f conftest.s conftest.o conftest
5177 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5178 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5179 [Define if your linker has buggy garbage collection of
5180 sections support when .text.startup.foo like sections are used.])
5182 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5184 AC_MSG_CHECKING(linker for compressed debug sections)
5185 # gold/gld support compressed debug sections since binutils 2.19/2.21
5186 # In binutils 2.26, gld gained support for the ELF gABI format.
5187 if test $in_tree_ld = yes ; then
5188 gcc_cv_ld_compress_debug=0
5189 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5190 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5191 gcc_cv_ld_compress_debug=2
5192 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5193 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5194 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5195 gcc_cv_ld_compress_debug=3
5196 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5197 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5198 && test $in_tree_ld_is_elf = yes; then
5199 gcc_cv_ld_compress_debug=1
5201 elif echo "$ld_ver" | grep GNU > /dev/null; then
5202 if test "$ld_vers_major" -lt 2 \
5203 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5204 gcc_cv_ld_compress_debug=0
5205 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5206 gcc_cv_ld_compress_debug=1
5208 gcc_cv_ld_compress_debug=3
5209 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5211 if test $ld_is_gold = yes; then
5212 gcc_cv_ld_compress_debug=2
5213 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5219 # Introduced in Solaris 11.2.
5220 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5221 gcc_cv_ld_compress_debug=3
5222 gcc_cv_ld_compress_debug_option="-z compress-sections"
5224 gcc_cv_ld_compress_debug=0
5228 # Assume linkers other than GNU ld don't support compessed debug
5230 gcc_cv_ld_compress_debug=0
5235 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5236 [Define to the level of your linker's compressed debug section support.])
5237 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5238 [Define to the linker option to enable compressed debug sections.])
5239 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5245 AC_CACHE_CHECK(linker --as-needed support,
5246 gcc_cv_ld_as_needed,
5247 [gcc_cv_ld_as_needed=no
5248 gcc_cv_ld_as_needed_option='--as-needed'
5249 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5250 if test $in_tree_ld = yes ; then
5251 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5252 && test $in_tree_ld_is_elf = yes; then
5253 gcc_cv_ld_as_needed=yes
5255 elif test x$gcc_cv_ld != x; then
5256 # Check if linker supports --as-needed and --no-as-needed options
5257 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5258 gcc_cv_ld_as_needed=yes
5261 # Solaris 2 ld always supports -z ignore/-z record.
5263 gcc_cv_ld_as_needed=yes
5264 gcc_cv_ld_as_needed_option="-z ignore"
5265 gcc_cv_ld_no_as_needed_option="-z record"
5270 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5271 # dl_iterate_phdr, i.e. since Solaris 11.
5273 *-*-solaris2.1[[1-9]]*)
5275 i?86-*-* | x86_64-*-*)
5276 if echo "$ld_ver" | grep GNU > /dev/null; then
5277 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5278 gcc_cv_ld_as_needed=no
5284 gcc_cv_ld_as_needed=no
5288 if test x"$gcc_cv_ld_as_needed" = xyes; then
5289 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5290 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5291 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5292 [Define to the linker option to ignore unused dependencies.])
5293 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5294 [Define to the linker option to keep unused dependencies.])
5297 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5298 saved_LDFLAGS="$LDFLAGS"
5299 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5300 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5301 AC_LINK_IFELSE([int main(void) {return 0;}],
5302 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5304 LDFLAGS="$saved_LDFLAGS"
5305 if test "x$gcc_cv_ld_clearcap" = xyes; then
5306 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5307 [Define if the linker supports clearing hardware capabilities via mapfile.])
5308 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5310 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5312 case "$target:$tm_file" in
5313 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5316 emul_name="-melf64lppc"
5319 emul_name="-melf64ppc"
5322 emul_name="-melf64ppc_fbsd"
5325 AC_CACHE_CHECK(linker support for omitting dot symbols,
5326 gcc_cv_ld_no_dot_syms,
5327 [gcc_cv_ld_no_dot_syms=no
5328 if test x"$ld_is_gold" = xyes; then
5329 gcc_cv_ld_no_dot_syms=yes
5330 elif test $in_tree_ld = yes ; then
5331 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5332 gcc_cv_ld_no_dot_syms=yes
5334 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5335 cat > conftest1.s <<EOF
5339 cat > conftest2.s <<EOF
5340 .section ".opd","aw"
5345 .quad .LEfoo,.TOC.@tocbase,0
5351 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5352 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5353 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5354 gcc_cv_ld_no_dot_syms=yes
5356 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5359 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5360 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5361 [Define if your PowerPC64 linker only needs function descriptor syms.])
5364 AC_CACHE_CHECK(linker large toc support,
5365 gcc_cv_ld_large_toc,
5366 [gcc_cv_ld_large_toc=no
5367 if test x"$ld_is_gold" = xyes; then
5368 gcc_cv_ld_large_toc=yes
5369 elif test $in_tree_ld = yes ; then
5370 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5371 gcc_cv_ld_large_toc=yes
5373 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5374 cat > conftest.s <<EOF
5375 .section ".tbss","awT",@nobits
5381 addis 9,13,ie0@got@tprel@ha
5382 ld 9,ie0@got@tprel@l(9)
5384 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5385 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5386 gcc_cv_ld_large_toc=yes
5388 rm -f conftest conftest.o conftest.s
5391 if test x"$gcc_cv_ld_large_toc" = xyes; then
5392 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5393 [Define if your PowerPC64 linker supports a large TOC.])
5396 AC_CACHE_CHECK(linker toc pointer alignment,
5397 gcc_cv_ld_toc_align,
5398 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5399 cat > conftest.s <<EOF
5404 .section .data.rel.ro,"aw",@progbits
5409 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5410 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5411 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5413 rm -f conftest conftest.o conftest.s
5416 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5417 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5418 [Define to .TOC. alignment forced by your linker.])
5425 AC_CACHE_CHECK(linker large toc support,
5426 gcc_cv_ld_large_toc,
5427 [gcc_cv_ld_large_toc=no
5428 if test x$gcc_cv_as != x ; then
5429 cat > conftest.s <<EOF
5439 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5440 gcc_cv_ld_large_toc=yes
5442 rm -f conftest conftest.o conftest.s
5445 if test x"$gcc_cv_ld_large_toc" = xyes; then
5446 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5447 [Define if your PowerPC64 linker supports a large TOC.])
5452 AC_CACHE_CHECK(linker --build-id support,
5454 [gcc_cv_ld_buildid=no
5455 if test $in_tree_ld = yes ; then
5456 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5457 "$gcc_cv_gld_minor_version" -ge 18 -o \
5458 "$gcc_cv_gld_major_version" -gt 2 \
5459 && test $in_tree_ld_is_elf = yes; then
5460 gcc_cv_ld_buildid=yes
5462 elif test x$gcc_cv_ld != x; then
5463 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5464 gcc_cv_ld_buildid=yes
5467 if test x"$gcc_cv_ld_buildid" = xyes; then
5468 AC_DEFINE(HAVE_LD_BUILDID, 1,
5469 [Define if your linker supports --build-id.])
5472 AC_ARG_ENABLE(linker-build-id,
5473 [AS_HELP_STRING([--enable-linker-build-id],
5474 [compiler will always pass --build-id to linker])],
5476 enable_linker_build_id=no)
5478 if test x"$enable_linker_build_id" = xyes; then
5479 if test x"$gcc_cv_ld_buildid" = xyes; then
5480 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5481 [Define if gcc should always pass --build-id to linker.])
5483 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5487 # In binutils 2.21, GNU ld gained support for new emulations fully
5488 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5489 AC_CACHE_CHECK(linker *_sol2 emulation support,
5490 gcc_cv_ld_sol2_emulation,
5491 [gcc_cv_ld_sol2_emulation=no
5492 if test $in_tree_ld = yes ; then
5493 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5494 "$gcc_cv_gld_minor_version" -ge 21 -o \
5495 "$gcc_cv_gld_major_version" -gt 2 \
5496 && test $in_tree_ld_is_elf = yes; then
5497 gcc_cv_ld_sol2_emulation=yes
5499 elif test x$gcc_cv_ld != x; then
5500 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5501 grep _sol2 > /dev/null; then
5502 gcc_cv_ld_sol2_emulation=yes
5505 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5506 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5507 [Define if your linker supports the *_sol2 emulations.])
5510 AC_CACHE_CHECK(linker --sysroot support,
5512 [gcc_cv_ld_sysroot=no
5513 if test $in_tree_ld = yes ; then
5514 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5515 gcc_cv_ld_sysroot=yes
5517 elif test x$gcc_cv_ld != x; then
5518 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5519 gcc_cv_ld_sysroot=yes
5522 if test x"$gcc_cv_ld_sysroot" = xyes; then
5523 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5524 [Define if your linker supports --sysroot.])
5529 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5530 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5531 gcc_cv_solaris_crts,
5532 [gcc_cv_solaris_crts=no
5533 if test x$host != x$target; then
5534 if test "x$with_sysroot" = xyes; then
5535 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5537 target_sysroot="${with_sysroot}"
5540 target_libdir="$target_sysroot/usr/lib"
5541 # At the time they were added, gcrt1.o became a symlink for backwards
5542 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5544 i?86-*-solaris2* | x86_64-*-solaris2*)
5545 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5548 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5553 if test x$gcc_cv_solaris_crts = xyes; then
5554 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5555 [Define if the system-provided CRTs are present on Solaris.])
5558 # Test for stack protector support in target C library.
5559 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5560 gcc_cv_libc_provides_ssp,
5561 [gcc_cv_libc_provides_ssp=no
5564 # All versions of musl provide stack protector
5565 gcc_cv_libc_provides_ssp=yes;;
5566 *-*-linux* | *-*-kfreebsd*-gnu)
5567 # glibc 2.4 and later provides __stack_chk_fail and
5568 # either __stack_chk_guard, or TLS access to stack guard canary.
5569 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5570 [if test -f $target_header_dir/features.h \
5571 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5572 $target_header_dir/features.h > /dev/null; then
5573 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5574 $target_header_dir/features.h > /dev/null && \
5575 test -f $target_header_dir/bits/uClibc_config.h && \
5576 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5577 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5578 gcc_cv_libc_provides_ssp=yes
5580 # all versions of Bionic support stack protector
5581 elif test -f $target_header_dir/sys/cdefs.h \
5582 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5583 $target_header_dir/sys/cdefs.h > /dev/null; then
5584 gcc_cv_libc_provides_ssp=yes
5588 # Avoid complicated tests (see
5589 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5590 # simply assert that glibc does provide this, which is true for all
5591 # realistically usable GNU/Hurd configurations.
5592 # All supported versions of musl provide it as well
5593 gcc_cv_libc_provides_ssp=yes;;
5594 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5595 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5596 [echo "no __stack_chk_fail on this target"])
5598 *) gcc_cv_libc_provides_ssp=no ;;
5601 if test x$gcc_cv_libc_provides_ssp = xyes; then
5602 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5603 [Define if your target C library provides stack protector support])
5606 # Check whether --enable-default-ssp was given.
5607 AC_ARG_ENABLE(default-ssp,
5608 [AS_HELP_STRING([--enable-default-ssp],
5609 [enable Stack Smashing Protection as default])],[
5610 if test x$gcc_cv_libc_provides_ssp = xyes; then
5612 ia64*-*-*) enable_default_ssp=no ;;
5613 *) enable_default_ssp=$enableval ;;
5616 enable_default_ssp=no
5618 enable_default_ssp=no)
5619 if test x$enable_default_ssp = xyes ; then
5620 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5621 [Define if your target supports default stack protector and it is enabled.])
5623 AC_SUBST([enable_default_ssp])
5625 # Test for <sys/sdt.h> on the target.
5626 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5627 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5629 if test -f $target_header_dir/sys/sdt.h; then
5631 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5632 [Define if your target C library provides sys/sdt.h])
5634 AC_MSG_RESULT($have_sys_sdt_h)
5636 # Check if TFmode long double should be used by default or not.
5637 # Some glibc targets used DFmode long double, but with glibc 2.4
5638 # and later they can use TFmode.
5640 powerpc*-*-linux* | \
5644 AC_ARG_WITH(long-double-128,
5645 [AS_HELP_STRING([--with-long-double-128],
5646 [use 128-bit long double by default])],
5647 gcc_cv_target_ldbl128="$with_long_double_128",
5648 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5649 [gcc_cv_target_ldbl128=no
5650 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5651 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5652 && gcc_cv_target_ldbl128=yes
5656 if test x$gcc_cv_target_ldbl128 = xyes; then
5657 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5658 [Define if TFmode long double should be the default])
5661 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5662 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5663 gcc_cv_libc_provides_hwcap_in_tcb=no
5666 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5669 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5670 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5671 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5674 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5675 gcc_cv_target_dl_iterate_phdr=unknown
5677 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5678 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5679 # libdl there, both complicating its use and breaking compatibility
5680 # between Solaris 10 updates.
5681 *-*-solaris2.1[[1-9]]*)
5682 # <link.h> needs both a dl_iterate_phdr declaration and support for
5683 # compilation with largefile support.
5684 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5685 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5686 gcc_cv_target_dl_iterate_phdr=yes
5688 gcc_cv_target_dl_iterate_phdr=no
5691 *-*-dragonfly* | *-*-freebsd*)
5692 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5693 gcc_cv_target_dl_iterate_phdr=yes
5695 gcc_cv_target_dl_iterate_phdr=no
5699 gcc_cv_target_dl_iterate_phdr=yes
5702 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5703 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5704 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5705 [Define if your target C library provides the `dl_iterate_phdr' function.])
5707 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5709 # We no longer support different GC mechanisms. Emit an error if
5710 # the user configures with --with-gc.
5712 [AS_HELP_STRING([--with-gc={page,zone}],
5713 [this option is not supported anymore. It used to choose
5714 the garbage collection mechanism to use with the compiler])],
5715 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5718 # Libraries to use on the host. This will normally be set by the top
5719 # level Makefile. Here we simply capture the value for our Makefile.
5720 if test -z "${HOST_LIBS+set}"; then
5725 # Use the system's zlib library.
5728 dnl Very limited version of automake's enable-maintainer-mode
5730 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5731 dnl maintainer-mode is disabled by default
5732 AC_ARG_ENABLE(maintainer-mode,
5733 [AS_HELP_STRING([--enable-maintainer-mode],
5734 [enable make rules and dependencies not useful
5735 (and sometimes confusing) to the casual installer])],
5736 maintainer_mode=$enableval,
5739 AC_MSG_RESULT($maintainer_mode)
5741 if test "$maintainer_mode" = "yes"; then
5748 dnl Whether to prevent multiple front-ends from linking at the same time
5750 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5751 AC_ARG_ENABLE(link-mutex,
5752 [AS_HELP_STRING([--enable-link-mutex],
5753 [avoid linking multiple front-ends at once to avoid thrashing
5754 on the build machine])],
5755 do_link_mutex=$enableval,
5757 AC_MSG_RESULT($do_link_mutex)
5759 if test "$do_link_mutex" = "yes"; then
5764 AC_SUBST(DO_LINK_MUTEX)
5770 # Make empty files to contain the specs and options for each language.
5771 # Then add #include lines to for a compiler that has specs and/or options.
5777 # These (without "all_") are set in each config-lang.in.
5778 # `language' must be a single word so is spelled singularly.
5781 all_outputs='Makefile'
5782 # List of language makefile fragments.
5784 # Additional files for gengtype
5785 all_gtfiles="$target_gtfiles"
5787 # These are the languages that are set in --enable-languages,
5788 # and are available in the GCC tree.
5789 all_selected_languages=
5791 # Add the language fragments.
5792 # Languages are added via two mechanisms. Some information must be
5793 # recorded in makefile variables, these are defined in config-lang.in.
5794 # We accumulate them and plug them into the main Makefile.
5795 # The other mechanism is a set of hooks for each of the main targets
5796 # like `clean', `install', etc.
5798 language_hooks="Make-hooks"
5800 for lang in ${srcdir}/*/config-lang.in
5803 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5805 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5806 if test "x$lang_alias" = x
5808 echo "$lang doesn't set \$language." 1>&2
5811 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5812 subdirs="$subdirs $subdir"
5814 # $gcc_subdir is where the gcc integration files are to be found
5815 # for a language, both for internal compiler purposes (compiler
5816 # sources implementing front-end to GCC tree converters), and for
5817 # build infrastructure purposes (Make-lang.in, etc.)
5819 # This will be <subdir> (relative to $srcdir) if a line like
5820 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5821 # is found in <langdir>/config-lang.in, and will remain <langdir>
5824 # Except for the language alias (fetched above), the regular
5825 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5826 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5827 # only this and the language alias.
5829 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5830 if [ "$gcc_subdir" = "" ]; then
5831 gcc_subdir="$subdir"
5834 case ",$enable_languages," in
5836 all_selected_languages="$all_selected_languages $lang_alias"
5837 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5838 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5850 . ${srcdir}/$gcc_subdir/config-lang.in
5851 if test "x$language" = x
5853 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5858 case ",$enable_languages," in
5861 for i in $subdir_requires; do
5862 test -f "${srcdir}/$i/config-lang.in" && continue
5870 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5871 if test -f $srcdir/$gcc_subdir/lang.opt; then
5872 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5873 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5875 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5876 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5878 all_languages="$all_languages $language"
5879 all_compilers="$all_compilers $compilers"
5880 all_outputs="$all_outputs $outputs"
5881 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5882 case ",$enable_languages," in
5884 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5886 AC_SUBST(enable_lto)
5893 for language in $all_selected_languages
5895 check_languages="$check_languages check-$language"
5898 # We link each language in with a set of hooks, reached indirectly via
5899 # lang.${target}. Only do so for selected languages.
5903 target_list="all.cross start.encap rest.encap tags \
5904 install-common install-man install-info install-pdf install-html dvi \
5905 pdf html uninstall info man srcextra srcman srcinfo \
5906 mostlyclean clean distclean maintainer-clean install-plugin"
5908 for t in $target_list
5911 for lang in $all_selected_languages
5915 echo "lang.$t: $x" >> Make-hooks
5919 # Option include files
5922 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5923 option_includes="option-includes.mk"
5924 AC_SUBST_FILE(option_includes)
5932 echo "dir ." > .gdbinit
5933 echo "dir ${srcdir}" >> .gdbinit
5934 if test x$gdb_needs_out_file_path = xyes
5936 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5938 if test "x$subdirs" != x; then
5941 echo "dir ${srcdir}/$s" >> .gdbinit
5944 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5945 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5947 # Put a breakpoint on __asan_report_error to help with debugging buffer
5950 *-fsanitize=address*)
5951 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5955 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5956 AC_SUBST(gcc_tooldir)
5959 # Find a directory in which to install a shared libgcc.
5961 AC_ARG_ENABLE(version-specific-runtime-libs,
5962 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5963 [specify that runtime libraries should be
5964 installed in a compiler-specific directory])])
5966 # Substitute configuration variables
5969 AC_SUBST(all_compilers)
5970 AC_SUBST(all_gtfiles)
5971 AC_SUBST(all_lang_makefrags)
5972 AC_SUBST(all_languages)
5973 AC_SUBST(all_selected_languages)
5974 AC_SUBST(build_exeext)
5975 AC_SUBST(build_install_headers_dir)
5976 AC_SUBST(build_xm_file_list)
5977 AC_SUBST(build_xm_include_list)
5978 AC_SUBST(build_xm_defines)
5979 AC_SUBST(build_file_translate)
5980 AC_SUBST(check_languages)
5981 AC_SUBST(cpp_install_dir)
5982 AC_SUBST(xmake_file)
5983 AC_SUBST(tmake_file)
5984 AC_SUBST(TM_ENDIAN_CONFIG)
5985 AC_SUBST(TM_MULTILIB_CONFIG)
5986 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5987 AC_SUBST(extra_gcc_objs)
5988 AC_SUBST(user_headers_inc_next_pre)
5989 AC_SUBST(user_headers_inc_next_post)
5990 AC_SUBST(extra_headers_list)
5991 AC_SUBST(extra_objs)
5992 AC_SUBST(extra_programs)
5993 AC_SUBST(float_h_file)
5994 AC_SUBST(gcc_config_arguments)
5995 AC_SUBST(gcc_gxx_include_dir)
5996 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5997 AC_SUBST(host_exeext)
5998 AC_SUBST(host_xm_file_list)
5999 AC_SUBST(host_xm_include_list)
6000 AC_SUBST(host_xm_defines)
6001 AC_SUBST(out_host_hook_obj)
6003 AC_SUBST(lang_opt_files)
6004 AC_SUBST(lang_specs_files)
6005 AC_SUBST(lang_tree_files)
6006 AC_SUBST(local_prefix)
6008 AC_SUBST(objc_boehm_gc)
6010 AC_SUBST(out_object_file)
6011 AC_SUBST(common_out_file)
6012 AC_SUBST(common_out_object_file)
6013 AC_SUBST(tm_file_list)
6014 AC_SUBST(tm_include_list)
6015 AC_SUBST(tm_defines)
6016 AC_SUBST(tm_p_file_list)
6017 AC_SUBST(tm_p_include_list)
6018 AC_SUBST(xm_file_list)
6019 AC_SUBST(xm_include_list)
6020 AC_SUBST(xm_defines)
6021 AC_SUBST(use_gcc_stdint)
6022 AC_SUBST(c_target_objs)
6023 AC_SUBST(cxx_target_objs)
6024 AC_SUBST(fortran_target_objs)
6025 AC_SUBST(target_cpu_default)
6027 AC_SUBST_FILE(language_hooks)
6030 if test x${build} = x${host} ; then
6031 if test x${host} = x${target} ; then
6032 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6034 echo "Links are now set up to build a cross-compiler" 1>&2
6035 echo " from ${host} to ${target}." 1>&2
6038 if test x${host} = x${target} ; then
6039 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6040 echo " for ${target}." 1>&2
6042 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6043 echo " from ${host} to ${target}." 1>&2
6047 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6048 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6050 AC_ARG_VAR(ISLLIBS,[How to link isl])
6051 AC_ARG_VAR(ISLINC,[How to find isl include files])
6052 if test "x${ISLLIBS}" != "x" ; then
6053 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6056 # Check whether isl_options_set_schedule_serialize_sccs is available;
6057 # it's new in isl 0.15.
6058 if test "x${ISLLIBS}" != "x" ; then
6059 saved_CXXFLAGS="$CXXFLAGS"
6060 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
6062 LIBS="$LIBS $ISLLIBS $GMPLIBS"
6064 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
6065 AC_TRY_LINK([#include <isl/schedule.h>],
6066 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
6067 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
6068 [ac_has_isl_options_set_schedule_serialize_sccs=no])
6069 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
6072 CXXFLAGS="$saved_CXXFLAGS"
6074 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
6075 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
6076 [Define if isl_options_set_schedule_serialize_sccs exists.])
6081 AC_SUBST(pluginlibs)
6082 AC_SUBST(enable_plugin)
6083 if test x"$enable_plugin" = x"yes"; then
6084 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6088 # Enable --enable-host-shared
6089 AC_ARG_ENABLE(host-shared,
6090 [AS_HELP_STRING([--enable-host-shared],
6091 [build host code as shared libraries])],
6092 [PICFLAG=-fPIC], [PICFLAG=])
6093 AC_SUBST(enable_host_shared)
6097 AC_ARG_ENABLE(libquadmath-support,
6098 [AS_HELP_STRING([--disable-libquadmath-support],
6099 [disable libquadmath support for Fortran])],
6100 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6101 ENABLE_LIBQUADMATH_SUPPORT=yes)
6102 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6103 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6104 [Define to 1 to enable libquadmath support])
6108 # Specify what hash style to use by default.
6109 AC_ARG_WITH([linker-hash-style],
6110 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6111 [specify the linker hash style])],
6112 [case x"$withval" in
6114 LINKER_HASH_STYLE=sysv
6117 LINKER_HASH_STYLE=gnu
6120 LINKER_HASH_STYLE=both
6123 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6126 [LINKER_HASH_STYLE=''])
6127 if test x"${LINKER_HASH_STYLE}" != x; then
6128 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6129 [The linker hash style])
6132 # Specify what should be the default of -fdiagnostics-color option.
6133 AC_ARG_WITH([diagnostics-color],
6134 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6135 [specify the default of -fdiagnostics-color option
6136 auto-if-env stands for -fdiagnostics-color=auto if
6137 GCC_COLOR environment variable is present and
6138 -fdiagnostics-color=never otherwise])],
6139 [case x"$withval" in
6141 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6144 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6147 DIAGNOSTICS_COLOR_DEFAULT=-1
6150 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6153 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6156 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6157 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6158 [The default for -fdiagnostics-color option])
6160 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6161 # of jit/jit-playback.c.
6162 cat > gcc-driver-name.h <<EOF
6163 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6166 # Check whether --enable-default-pie was given.
6167 AC_ARG_ENABLE(default-pie,
6168 [AS_HELP_STRING([--enable-default-pie],
6169 [enable Position Independent Executable as default])],
6170 enable_default_pie=$enableval,
6171 enable_default_pie=no)
6172 if test x$enable_default_pie = xyes ; then
6173 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6174 [Define if your target supports default PIE and it is enabled.])
6176 AC_SUBST([enable_default_pie])
6178 # Check if -fno-PIE works.
6179 AC_CACHE_CHECK([for -fno-PIE option],
6181 [saved_CXXFLAGS="$CXXFLAGS"
6182 CXXFLAGS="$CXXFLAGS -fno-PIE"
6183 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6184 [gcc_cv_c_no_fpie=yes],
6185 [gcc_cv_c_no_fpie=no])
6186 CXXFLAGS="$saved_CXXFLAGS"])
6187 if test "$gcc_cv_c_no_fpie" = "yes"; then
6188 NO_PIE_CFLAGS="-fno-PIE"
6190 AC_SUBST([NO_PIE_CFLAGS])
6192 # Check if -no-pie works.
6193 AC_CACHE_CHECK([for -no-pie option],
6195 [saved_LDFLAGS="$LDFLAGS"
6196 LDFLAGS="$LDFLAGS -no-pie"
6197 AC_LINK_IFELSE([int main(void) {return 0;}],
6198 [gcc_cv_no_pie=yes],
6200 LDFLAGS="$saved_LDFLAGS"])
6201 if test "$gcc_cv_no_pie" = "yes"; then
6202 NO_PIE_FLAG="-no-pie"
6204 AC_SUBST([NO_PIE_FLAG])
6206 # Check linker supports '-z bndplt'
6207 ld_bndplt_support=no
6208 AC_MSG_CHECKING(linker -z bndplt option)
6209 if test x"$ld_is_gold" = xno; then
6210 if test $in_tree_ld = yes ; then
6211 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6212 ld_bndplt_support=yes
6214 elif test x$gcc_cv_ld != x; then
6215 # Check if linker supports -a bndplt option
6216 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6217 ld_bndplt_support=yes
6221 if test x"$ld_bndplt_support" = xyes; then
6222 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6223 [Define if your linker supports -z bndplt])
6225 AC_MSG_RESULT($ld_bndplt_support)
6227 # Configure the subdirectories
6228 # AC_CONFIG_SUBDIRS($subdirs)
6230 # Create the Makefile
6231 # and configure language subdirectories
6232 AC_CONFIG_FILES($all_outputs)
6234 AC_CONFIG_COMMANDS([default],
6236 case ${CONFIG_HEADERS} in
6237 *auto-host.h:config.in*)
6240 # Make sure all the subdirs exist.
6241 for d in $subdirs doc build common c-family
6243 test -d $d || mkdir $d
6246 [subdirs='$subdirs'])