2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
209 if test x${gcc_gxx_include_dir} = x; then
210 if test x${enable_version_specific_runtime_libs} = xyes; then
211 gcc_gxx_include_dir='${libsubdir}/include/c++'
213 libstdcxx_incdir='include/c++/$(version)'
214 if test x$host != x$target; then
215 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
217 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
221 gcc_gxx_include_dir_add_sysroot=0
222 if test "${with_sysroot+set}" = set; then
223 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
224 if test "${gcc_gxx_without_sysroot}"; then
225 if test x${with_sysroot} != x/; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 AC_ARG_WITH(cpp_install_dir,
233 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
234 [install the user visible C preprocessor in DIR
235 (relative to PREFIX) as well as PREFIX/bin])],
236 [if test x$withval = xyes; then
237 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
238 elif test x$withval != xno; then
239 cpp_install_dir=$withval
242 # We would like to our source tree to be readonly. However when releases or
243 # pre-releases are generated, the flex/bison generated files as well as the
244 # various formats of manuals need to be included along with the rest of the
245 # sources. Therefore we have --enable-generated-files-in-srcdir to do
248 AC_MSG_CHECKING([whether to place generated files in the source directory])
249 dnl generated-files-in-srcdir is disabled by default
250 AC_ARG_ENABLE(generated-files-in-srcdir,
251 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
252 [put copies of generated files in source dir
253 intended for creating source tarballs for users
254 without texinfo bison or flex])],
255 generated_files_in_srcdir=$enableval,
256 generated_files_in_srcdir=no)
258 AC_MSG_RESULT($generated_files_in_srcdir)
260 if test "$generated_files_in_srcdir" = "yes"; then
267 # -------------------
268 # Find default linker
269 # -------------------
273 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
274 gnu_ld_flag="$with_gnu_ld",
278 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
282 # With pre-defined ld
284 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
285 DEFAULT_LINKER="$with_ld")
286 if test x"${DEFAULT_LINKER+set}" = x"set"; then
287 if test ! -x "$DEFAULT_LINKER"; then
288 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
289 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
291 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
294 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
295 [Define to enable the use of a default linker.])
298 AC_MSG_CHECKING([whether a default linker was specified])
299 if test x"${DEFAULT_LINKER+set}" = x"set"; then
300 if test x"$gnu_ld_flag" = x"no"; then
301 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
303 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
309 # With demangler in GNU ld
310 AC_ARG_WITH(demangler-in-ld,
311 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
312 demangler_in_ld="$with_demangler_in_ld",
315 # ----------------------
316 # Find default assembler
317 # ----------------------
321 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
322 gas_flag="$with_gnu_as",
326 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
327 DEFAULT_ASSEMBLER="$with_as")
328 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
329 if test ! -x "$DEFAULT_ASSEMBLER"; then
330 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
331 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
334 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
335 [Define to enable the use of a default assembler.])
338 AC_MSG_CHECKING([whether a default assembler was specified])
339 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
340 if test x"$gas_flag" = x"no"; then
341 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
343 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
353 # If a non-executable a.out is present (e.g. created by GNU as above even if
354 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
355 # file, even when creating an executable, so an execution test fails.
356 # Remove possible default executable files to avoid this.
358 # FIXME: This really belongs into AC_PROG_CC and can be removed once
359 # Autoconf includes it.
360 rm -f a.out a.exe b.out
362 # Find the native compiler
365 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
367 # Do configure tests with the C++ compiler, since that's what we build with.
370 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
371 # optimizations to be activated explicitly by the toplevel.
374 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
375 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
380 # Determine PICFLAG for target gnatlib.
381 GCC_PICFLAG_FOR_TARGET
382 AC_SUBST(PICFLAG_FOR_TARGET)
384 # -------------------------
385 # Check C compiler features
386 # -------------------------
388 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual $wf_opt])), [loose_warn])
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # Enable __cxa_atexit for C++.
815 AC_ARG_ENABLE(__cxa_atexit,
816 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
819 # Enable C extension for decimal float if target supports it.
820 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
822 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
824 [Define to 1 to enable decimal float extension to C.])
826 # Use default_decimal_float for dependency.
827 enable_decimal_float=$default_decimal_float
829 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
831 [Define to 1 to specify that we are using the BID decimal floating
832 point format instead of DPD])
834 # Enable C extension for fixed-point arithmetic.
835 AC_ARG_ENABLE(fixed-point,
836 [AS_HELP_STRING([--enable-fixed-point],
837 [enable fixed-point arithmetic extension to C])],
842 enable_fixed_point=yes
846 enable_fixed_point=yes
849 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
850 enable_fixed_point=no
854 AC_SUBST(enable_fixed_point)
856 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
857 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
858 [Define to 1 to enable fixed-point arithmetic extension to C.])
861 # Pass with no value to take the default
862 # Pass with a value to specify a thread package
863 AC_ARG_ENABLE(threads,
864 [AS_HELP_STRING([[--enable-threads[=LIB]]],
865 [enable thread usage for target GCC,
866 using LIB thread package])],,
870 [AS_HELP_STRING([--enable-tls],
871 [enable or disable generation of tls code
872 overriding the assembler check for tls support])],
876 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
877 Valid choices are 'yes' and 'no'.]) ;;
881 AC_ARG_ENABLE(vtable-verify,
882 [AS_HELP_STRING([--enable-vtable-verify],
883 [enable vtable verification feature])],,
884 [enable_vtable_verify=no])
885 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
886 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
887 [Define 0/1 if vtable verification feature is enabled.])
889 AC_ARG_ENABLE(objc-gc,
890 [AS_HELP_STRING([--enable-objc-gc],
891 [enable the use of Boehm's garbage collector with
892 the GNU Objective-C runtime])],
893 if test x$enable_objc_gc = xno; then
901 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
902 dwarf2="$with_dwarf2",
905 AC_ARG_ENABLE(shared,
906 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
908 case $enable_shared in
912 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
913 for pkg in $enableval; do
914 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
921 ], [enable_shared=yes])
922 AC_SUBST(enable_shared)
925 [AS_HELP_STRING([--with-specs=SPECS],
926 [add SPECS to driver command-line processing])],
927 [CONFIGURE_SPECS=$withval],
930 AC_SUBST(CONFIGURE_SPECS)
932 ACX_PKGVERSION([GCC])
933 ACX_BUGURL([https://gcc.gnu.org/bugs/])
935 # Sanity check enable_languages in case someone does not run the toplevel
936 # configure # script.
937 AC_ARG_ENABLE(languages,
938 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
939 [case ,${enable_languages}, in
941 # go safe -- we cannot be much sure without the toplevel
943 # analysis of which target libs are present and usable
947 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
952 enable_languages=c,${enable_languages}
955 [enable_languages=c])
957 if test x"$enable_as_accelerator_for" != x; then
958 AC_DEFINE(ACCEL_COMPILER, 1,
959 [Define if this compiler should be built as the offload target compiler.])
960 enable_as_accelerator=yes
963 # In this case we expect offload compiler to be built as native, so we
964 # need to rename the driver to avoid clashes with host's drivers.
965 program_transform_name="s&^&${target}-&" ;;
967 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
968 program_transform_name=`echo $program_transform_name | sed $sedscript`
969 accel_dir_suffix=/accel/${target_noncanonical}
970 real_target_noncanonical=${enable_as_accelerator_for}
972 AC_SUBST(enable_as_accelerator)
973 AC_SUBST(real_target_noncanonical)
974 AC_SUBST(accel_dir_suffix)
976 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
977 tgt=`echo $tgt | sed 's/=.*//'`
979 if echo "$tgt" | grep "^hsa" > /dev/null ; then
985 if test x"$offload_targets" = x; then
988 offload_targets="$offload_targets,$tgt"
991 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
992 [Define to offload targets, separated by commas.])
993 if test x"$enable_offloading" != x; then
994 AC_DEFINE(ENABLE_OFFLOADING, 1,
995 [Define this to enable support for offloading.])
997 AC_DEFINE(ENABLE_OFFLOADING, 0,
998 [Define this to enable support for offloading.])
1001 if test x"$enable_hsa" = x1 ; then
1002 AC_DEFINE(ENABLE_HSA, 1,
1003 [Define this to enable support for generating HSAIL.])
1006 AC_ARG_WITH(multilib-list,
1007 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1009 with_multilib_list=default)
1011 # -------------------------
1012 # Checks for other programs
1013 # -------------------------
1017 # Find some useful tools
1019 # We need awk to create options.c and options.h.
1020 # Bail out if it's missing.
1022 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1029 AC_SUBST(ranlib_flags)
1033 # See if cmp has --ignore-initial.
1034 gcc_AC_PROG_CMP_IGNORE_INITIAL
1036 # See if we have the mktemp command.
1037 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1039 # See if makeinfo has been installed and is modern enough
1040 # that we can use it.
1041 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1042 [GNU texinfo.* \([0-9][0-9.]*\)],
1043 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1044 if test $gcc_cv_prog_makeinfo_modern = no; then
1046 *** Makeinfo is missing or too old.
1047 *** Info documentation will not be built.])
1052 AC_SUBST(BUILD_INFO)
1054 # Is pod2man recent enough to regenerate manpages?
1055 AC_MSG_CHECKING([for recent Pod::Man])
1056 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1058 GENERATED_MANPAGES=generated-manpages
1063 AC_SUBST(GENERATED_MANPAGES)
1065 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1068 dnl Don't use AC_PROG_LEX; we insist on flex.
1069 dnl LEXLIB is not useful in gcc.
1070 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1073 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1075 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1076 # check for build == host before using them.
1079 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1080 && test -d ../binutils ; then
1081 NM='${objdir}/../binutils/nm-new'
1083 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1087 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1088 && test -d ../binutils ; then
1089 AR='${objdir}/../binutils/ar'
1091 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1094 # The jit documentation looks better if built with sphinx, but can be
1095 # built with texinfo if sphinx is not available.
1096 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1097 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1099 # --------------------
1100 # Checks for C headers
1101 # --------------------
1103 # Need to reject headers which give warnings, so that the -Werror bootstrap
1104 # works later. *sigh* This needs to come before all header checks.
1111 AC_HEADER_TIOCGWINSZ
1112 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1113 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1114 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1115 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1117 # Check for thread headers.
1118 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1119 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1121 # These tests can't be done till we know if we have limits.h.
1125 # ----------------------
1126 # Checks for C++ headers
1127 # ----------------------
1129 dnl Autoconf will give an error in the configure script if there is no
1130 dnl C++ preprocessor. Hack to prevent that.
1131 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1133 m4_popdef([AC_MSG_ERROR])[]dnl
1135 AC_CHECK_HEADERS(unordered_map)
1136 AC_CHECK_HEADERS(tr1/unordered_map)
1137 AC_CHECK_HEADERS(ext/hash_map)
1140 # Dependency checking.
1144 AC_CONFIG_COMMANDS([gccdepdir],[
1145 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1146 for lang in $subdirs c-family common
1148 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1149 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1151 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1158 # These libraries may be used by collect2.
1159 # We may need a special search path to get them linked.
1160 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1162 for libs in '' -lld -lmld \
1163 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1164 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1167 AC_TRY_LINK_FUNC(ldopen,
1168 [gcc_cv_collect2_libs="$libs"; break])
1171 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1172 case $gcc_cv_collect2_libs in
1174 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1176 AC_SUBST(COLLECT2_LIBS)
1178 # When building Ada code on Alpha, we need exc_resume which is usually in
1179 # -lexc. So test for it.
1182 AC_SEARCH_LIBS(exc_resume, exc)
1185 AC_SUBST(GNAT_LIBEXC)
1187 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1190 AC_SEARCH_LIBS(kstat_open, kstat)
1191 EXTRA_GCC_LIBS="$LIBS"
1193 AC_SUBST(EXTRA_GCC_LIBS)
1195 # Some systems put ldexp and frexp in libm instead of libc; assume
1196 # they're both in the same place. jcf-dump needs them.
1199 AC_SEARCH_LIBS(ldexp, m)
1204 # Use <inttypes.h> only if it exists,
1205 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1207 AC_MSG_CHECKING(for inttypes.h)
1208 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1209 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1210 [[#define __STDC_FORMAT_MACROS
1211 #include <sys/types.h>
1212 #include <inttypes.h>]],
1217 [gcc_cv_header_inttypes_h=yes],
1218 [gcc_cv_header_inttypes_h=no])])
1219 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1220 if test $gcc_cv_header_inttypes_h = yes; then
1221 AC_DEFINE(HAVE_INTTYPES_H, 1,
1222 [Define if you have a working <inttypes.h> header file.])
1225 dnl Disabled until we have a complete test for buggy enum bitfields.
1226 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1228 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1229 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1230 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1231 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1232 putchar_unlocked putc_unlocked)
1233 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1234 popen sysconf strsignal getrusage nl_langinfo \
1235 gettimeofday mbstowcs wcswidth mmap setlocale \
1236 gcc_UNLOCKED_FUNCS madvise)
1238 if test x$ac_cv_func_mbstowcs = xyes; then
1239 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1240 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1246 [gcc_cv_func_mbstowcs_works=yes],
1247 [gcc_cv_func_mbstowcs_works=no],
1248 [gcc_cv_func_mbstowcs_works=yes])])
1249 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1250 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1251 [Define this macro if mbstowcs does not crash when its
1252 first argument is NULL.])
1256 AC_CHECK_TYPE(ssize_t, int)
1257 AC_CHECK_TYPE(caddr_t, char *)
1259 GCC_AC_FUNC_MMAP_BLACKLIST
1263 # Under VMS, vfork works very differently than on Unix. The standard test
1264 # won't work, and it isn't easily adaptable. It makes more sense to
1266 ac_cv_func_vfork_works=yes
1273 # Until we have in-tree GNU iconv:
1275 if test -f "$LTLIBICONV"; then
1276 LIBICONV_DEP=$LTLIBICONV
1278 AC_SUBST(LIBICONV_DEP)
1284 # We will need to find libiberty.h and ansidecl.h
1285 saved_CFLAGS="$CFLAGS"
1286 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1287 saved_CXXFLAGS="$CXXFLAGS"
1288 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1290 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1291 # normal autoconf function for these. But force definition of
1292 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1293 # basename handling in libiberty.h.
1294 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1295 #undef HAVE_DECL_BASENAME
1296 #define HAVE_DECL_BASENAME 1
1297 #include "ansidecl.h"
1298 #include "system.h"])
1300 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1301 madvise stpcpy strnlen strsignal strverscmp \
1302 strtol strtoul strtoll strtoull setenv unsetenv \
1303 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1304 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1305 #include "ansidecl.h"
1306 #include "system.h"])
1308 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1309 #include "ansidecl.h"
1311 #ifdef HAVE_SYS_RESOURCE_H
1312 #include <sys/resource.h>
1316 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1317 #include "ansidecl.h"
1319 #ifdef HAVE_SYS_RESOURCE_H
1320 #include <sys/resource.h>
1322 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1323 [Define to `long' if <sys/resource.h> doesn't define.])])
1325 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1326 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1327 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1328 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1329 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1330 #include "ansidecl.h"
1339 gcc_AC_CHECK_DECLS(times, , ,[
1340 #include "ansidecl.h"
1342 #ifdef HAVE_SYS_TIMES_H
1343 #include <sys/times.h>
1347 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1348 #include "ansidecl.h"
1353 # More time-related stuff.
1354 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1356 #include "ansidecl.h"
1358 #ifdef HAVE_SYS_TIMES_H
1359 #include <sys/times.h>
1361 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1362 if test $ac_cv_struct_tms = yes; then
1363 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1364 [Define if <sys/times.h> defines struct tms.])
1367 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1368 # revisit after autoconf 2.50.
1369 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1370 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1371 #include "ansidecl.h"
1373 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1374 if test $gcc_cv_type_clock_t = yes; then
1375 AC_DEFINE(HAVE_CLOCK_T, 1,
1376 [Define if <time.h> defines clock_t.])
1379 # Check if F_SETLKW is supported by fcntl.
1380 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1381 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1382 #include <fcntl.h>]], [[
1388 return fcntl (1, F_SETLKW, &fl);]])],
1389 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1390 if test $ac_cv_f_setlkw = yes; then
1391 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1392 [Define if F_SETLKW supported by fcntl.])
1395 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1396 CFLAGS="$saved_CFLAGS"
1397 CXXFLAGS="$saved_CXXFLAGS"
1399 # mkdir takes a single argument on some systems.
1400 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1408 # With Setjmp/Longjmp based exception handling.
1409 AC_ARG_ENABLE(sjlj-exceptions,
1410 [AS_HELP_STRING([--enable-sjlj-exceptions],
1411 [arrange to use setjmp/longjmp exception handling])],
1414 if test $enableval != yes; then
1415 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1420 force_sjlj_exceptions=yes],
1423 force_sjlj_exceptions=yes
1427 force_sjlj_exceptions=yes
1431 force_sjlj_exceptions=no
1434 if test $force_sjlj_exceptions = yes; then
1435 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1436 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1437 [Define 0/1 to force the choice for exception handling model.])
1440 # --------------------------------------------------------
1441 # Build, host, and target specific configuration fragments
1442 # --------------------------------------------------------
1444 # Collect build-machine-specific information.
1445 . ${srcdir}/config.build || exit 1
1447 # Collect host-machine-specific information.
1448 . ${srcdir}/config.host || exit 1
1452 # Collect target-machine-specific information.
1453 . ${srcdir}/config.gcc || exit 1
1455 extra_objs="${host_extra_objs} ${extra_objs}"
1456 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1458 # Default the target-machine variables that were not explicitly set.
1459 if test x"$tm_file" = x
1460 then tm_file=$cpu_type/$cpu_type.h; fi
1462 if test x"$extra_headers" = x
1463 then extra_headers=; fi
1465 if test x$md_file = x
1466 then md_file=$cpu_type/$cpu_type.md; fi
1468 if test x$out_file = x
1469 then out_file=$cpu_type/$cpu_type.c; fi
1471 if test x"$tmake_file" = x
1472 then tmake_file=$cpu_type/t-$cpu_type
1475 # Support --enable-initfini-array.
1476 if test x$enable_initfini_array != xno; then
1477 tm_file="${tm_file} initfini-array.h"
1480 if test x"$dwarf2" = xyes
1481 then tm_file="$tm_file tm-dwarf2.h"
1484 # Say what files are being used for the output code and MD file.
1485 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1486 echo "Using \`$srcdir/config/$md_file' as machine description file."
1488 # If any of the xm_file variables contain nonexistent files, warn
1489 # about them and drop them.
1492 for x in $build_xm_file; do
1493 if test -f $srcdir/config/$x
1495 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1501 for x in $host_xm_file; do
1502 if test -f $srcdir/config/$x
1504 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1510 for x in $xm_file; do
1511 if test -f $srcdir/config/$x
1513 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1519 for f in $tm_file; do
1522 if test $count = ax; then
1523 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1525 echo "Using the following target machine macro files:"
1526 for f in $tm_file; do
1527 echo " $srcdir/config/$f"
1531 if test x$use_long_long_for_widest_fast_int = xyes; then
1532 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1533 [Define to 1 if the 'long long' type is wider than 'long' but still
1534 efficiently supported by the host hardware.])
1537 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1538 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1540 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1541 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1544 for f in $host_xm_file; do
1547 if test $count = a; then
1549 elif test $count = ax; then
1550 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1552 echo "Using the following host machine macro files:"
1553 for f in $host_xm_file; do
1554 echo " $srcdir/config/$f"
1557 echo "Using ${out_host_hook_obj} for host machine hooks."
1559 if test "$host_xm_file" != "$build_xm_file"; then
1561 for f in $build_xm_file; do
1564 if test $count = a; then
1566 elif test $count = ax; then
1567 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1569 echo "Using the following build machine macro files:"
1570 for f in $build_xm_file; do
1571 echo " $srcdir/config/$f"
1576 if test -n "$configured_native_system_header_dir"; then
1577 native_system_header_dir=$configured_native_system_header_dir
1579 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1580 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1584 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1585 gcc_cv_mcontext_underscores,
1587 #include <sys/cdefs.h>
1588 #include <sys/signal.h>
1589 #include <ucontext.h>
1590 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1592 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1593 if test $gcc_cv_mcontext_underscores = yes; then
1594 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1595 [mcontext_t fields start with __])
1604 # Check if a valid thread package
1605 case ${enable_threads} in
1608 target_thread_file='single'
1612 target_thread_file='single'
1614 aix | dce | lynx | mipssde | posix | rtems | \
1615 single | tpf | vxworks | win32)
1616 target_thread_file=${enable_threads}
1619 echo "${enable_threads} is an unknown thread package" 1>&2
1624 if test x${thread_file} = x; then
1625 # No thread file set by target-specific clauses in config.gcc,
1626 # so use file chosen by default logic above
1627 thread_file=${target_thread_file}
1635 if test x$enable___cxa_atexit = xyes || \
1636 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1637 if test x$host = x$target; then
1639 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1640 # keyed to flag_use_cxa_atexit
1648 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1649 [echo "__cxa_atexit can't be enabled on this target"])
1653 # We can't check for __cxa_atexit when building a cross, so assume
1657 if test x$use_cxa_atexit = xyes; then
1658 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1659 [Define if you want to use __cxa_atexit, rather than atexit, to
1660 register C++ destructors for local statics and global objects.
1661 This is essential for fully standards-compliant handling of
1662 destructors, but requires __cxa_atexit in libc.])
1666 # Look for a file containing extra machine modes.
1667 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1668 extra_modes_file='$(srcdir)'/config/${extra_modes}
1669 AC_SUBST(extra_modes_file)
1670 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1671 [Define to the name of a file containing a list of extra machine modes
1672 for this architecture.])
1675 # Convert extra_options into a form suitable for Makefile use.
1678 for f in $extra_options; do
1679 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1680 all_opt_files="$all_opt_files $srcdir/config/$f"
1682 AC_SUBST(extra_opt_files)
1684 # auto-host.h is the file containing items generated by autoconf and is
1685 # the first file included by config.h.
1686 # If host=build, it is correct to have bconfig include auto-host.h
1687 # as well. If host!=build, we are in error and need to do more
1688 # work to find out the build config parameters.
1689 if test x$host = x$build
1691 build_auto=auto-host.h
1693 # We create a subdir, then run autoconf in the subdir.
1694 # To prevent recursion we set host and build for the new
1695 # invocation of configure to the build for this invocation
1702 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1703 *) realsrcdir=../${srcdir};;
1705 # Clearing GMPINC is necessary to prevent host headers being
1706 # used by the build compiler. Defining GENERATOR_FILE stops
1707 # system.h from including gmp.h.
1708 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1709 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1710 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1711 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1712 ${realsrcdir}/configure \
1713 --enable-languages=${enable_languages-all} \
1714 --target=$target_alias --host=$build_alias --build=$build_alias
1716 # We just finished tests for the build machine, so rename
1717 # the file auto-build.h in the gcc directory.
1718 mv auto-host.h ../auto-build.h
1721 build_auto=auto-build.h
1723 AC_SUBST(build_subdir)
1725 tm_file="${tm_file} defaults.h"
1726 tm_p_file="${tm_p_file} tm-preds.h"
1727 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1728 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1729 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1730 # put this back in temporarily.
1731 xm_file="auto-host.h ansidecl.h ${xm_file}"
1738 # Compile in configure arguments.
1739 if test -f configargs.h ; then
1740 # Being re-configured.
1741 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1742 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1744 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1747 # Double all backslashes and backslash all quotes to turn
1748 # gcc_config_arguments into a C string.
1749 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1750 $gcc_config_arguments
1752 gcc_config_arguments_str=`cat conftest.out`
1755 cat > configargs.h <<EOF
1756 /* Generated automatically. */
1757 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1758 static const char thread_model[] = "$thread_file";
1760 static const struct {
1761 const char *name, *value;
1762 } configure_default_options[] = $configure_default_options;
1767 gcc_BASEVER=`cat $srcdir/BASE-VER`
1768 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1769 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1770 if test -f $srcdir/REVISION ; then
1771 gcc_REVISION=`cat $srcdir/REVISION`
1775 cat > plugin-version.h <<EOF
1776 #include "configargs.h"
1778 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1779 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1780 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1781 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1783 static char basever[] = "$gcc_BASEVER";
1784 static char datestamp[] = "$gcc_DATESTAMP";
1785 static char devphase[] = "$gcc_DEVPHASE";
1786 static char revision[] = "$gcc_REVISION";
1788 /* FIXME plugins: We should make the version information more precise.
1789 One way to do is to add a checksum. */
1791 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1793 configuration_arguments};
1797 # Determine what GCC version number to use in filesystem paths.
1800 # Internationalization
1801 ZW_GNU_GETTEXT_SISTER_DIR
1803 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1804 # -liconv on the link line twice.
1805 case "$LIBINTL" in *$LIBICONV*)
1809 AC_ARG_ENABLE(secureplt,
1810 [AS_HELP_STRING([--enable-secureplt],
1811 [enable -msecure-plt by default for PowerPC])],
1814 AC_ARG_ENABLE(mingw-wildcard,
1815 [AS_HELP_STRING([--enable-mingw-wildcard],
1816 [Set whether to expand wildcard on command-line.
1817 Default to platform configuration])],
1818 [],[enable_mingw_wildcard=platform])
1819 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1820 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1821 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1822 [Value to set mingw's _dowildcard to.])])
1824 AC_ARG_ENABLE(leading-mingw64-underscores,
1825 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1826 [enable leading underscores on 64 bit mingw targets]),
1828 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1829 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1830 [Define if we should use leading underscore on 64 bit mingw targets])])
1833 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1836 AC_ARG_ENABLE(frame-pointer,
1837 [AS_HELP_STRING([--enable-frame-pointer],
1838 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1841 linux* | darwin[[8912]]*)
1842 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1844 enable_frame_pointer=no
1847 enable_frame_pointer=yes
1852 # Windows32 Registry support for specifying GCC installation paths.
1853 AC_ARG_ENABLE(win32-registry,
1854 [AS_HELP_STRING([--disable-win32-registry],
1855 [disable lookup of installation paths in the
1856 Registry on Windows hosts])
1857 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1858 AS_HELP_STRING([--enable-win32-registry=KEY],
1859 [use KEY instead of GCC version as the last portion
1860 of the registry key])],,)
1863 win32 | pe | cygwin* | mingw32*)
1864 if test "x$enable_win32_registry" != xno; then
1865 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1868 if test "x$enable_win32_registry" != xno; then
1869 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1870 [Define to 1 if installation paths should be looked up in the Windows
1871 Registry. Ignored on non-Windows hosts.])
1873 if test "x$enable_win32_registry" != xyes \
1874 && test "x$enable_win32_registry" != x; then
1875 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1876 [Define to be the last component of the Windows registry key under which
1877 to look for installation paths. The full key used will be
1878 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1879 The default is the GCC version number.])
1885 # Get an absolute path to the GCC top-level source directory
1886 holddir=`${PWDCMD-pwd}`
1888 topdir=`${PWDCMD-pwd}`
1891 # Conditionalize the makefile for this host machine.
1893 for f in ${host_xmake_file}
1895 if test -f ${srcdir}/config/$f
1897 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1901 # Conditionalize the makefile for this target machine.
1903 for f in ${tmake_file}
1905 if test -f ${srcdir}/config/$f
1907 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1910 tmake_file="${tmake_file_}"
1912 out_object_file=`basename $out_file .c`.o
1913 common_out_object_file=`basename $common_out_file .c`.o
1915 tm_file_list="options.h"
1916 tm_include_list="options.h insn-constants.h"
1917 for f in $tm_file; do
1920 f=`echo $f | sed 's/^..//'`
1921 tm_file_list="${tm_file_list} $f"
1922 tm_include_list="${tm_include_list} $f"
1925 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1926 tm_include_list="${tm_include_list} $f"
1929 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1930 tm_include_list="${tm_include_list} config/$f"
1937 for f in $tm_p_file; do
1940 tm_p_file_list="${tm_p_file_list} $f"
1941 tm_p_include_list="${tm_p_include_list} $f"
1944 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1945 tm_p_include_list="${tm_p_include_list} config/$f"
1951 for f in $xm_file; do
1954 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1955 xm_include_list="${xm_include_list} $f"
1958 xm_file_list="${xm_file_list} $f"
1959 xm_include_list="${xm_include_list} $f"
1962 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1963 xm_include_list="${xm_include_list} config/$f"
1969 host_xm_include_list=
1970 for f in $host_xm_file; do
1973 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1974 host_xm_include_list="${host_xm_include_list} $f"
1977 host_xm_file_list="${host_xm_file_list} $f"
1978 host_xm_include_list="${host_xm_include_list} $f"
1981 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1982 host_xm_include_list="${host_xm_include_list} config/$f"
1988 for f in $build_xm_file; do
1991 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1992 build_xm_include_list="${build_xm_include_list} $f"
1994 auto-build.h | auto-host.h )
1995 build_xm_file_list="${build_xm_file_list} $f"
1996 build_xm_include_list="${build_xm_include_list} $f"
1999 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2000 build_xm_include_list="${build_xm_include_list} config/$f"
2005 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2006 # cross-compiler which does not use the native headers and libraries.
2007 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2008 CROSS= AC_SUBST(CROSS)
2009 ALL=all.internal AC_SUBST(ALL)
2010 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2011 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2013 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2014 test x$build != x$host || test "x$with_build_sysroot" != x; then
2015 if test "x$with_build_sysroot" != x; then
2016 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2018 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2021 if test x$host != x$target
2023 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2025 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2026 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2027 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2030 if test "x$with_build_sysroot" != "x"; then
2031 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2032 elif test "x$with_sysroot" = x; then
2033 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2034 elif test "x$with_sysroot" = xyes; then
2035 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2037 target_header_dir="${with_sysroot}${native_system_header_dir}"
2040 target_header_dir=${native_system_header_dir}
2043 # If this is a cross-compiler that does not
2044 # have its own set of headers then define
2047 # If this is using newlib, without having the headers available now,
2048 # then define inhibit_libc in LIBGCC2_CFLAGS.
2049 # This prevents libgcc2 from containing any code which requires libc
2051 : ${inhibit_libc=false}
2052 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2053 test x$with_newlib = xyes ; } &&
2054 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2057 AC_SUBST(inhibit_libc)
2059 # When building gcc with a cross-compiler, we need to adjust things so
2060 # that the generator programs are still built with the native compiler.
2061 # Also, we cannot run fixincludes.
2063 # These are the normal (build=host) settings:
2064 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2065 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2066 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2067 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2068 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2069 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2071 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2072 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2074 # And these apply if build != host, or we are generating coverage data
2075 if test x$build != x$host || test "x$coverage_flags" != x
2077 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2078 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2079 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2081 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2082 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2083 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2084 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2086 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2087 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2089 # Expand extra_headers to include complete path.
2090 # This substitutes for lots of t-* files.
2092 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2093 for file in ${extra_headers} ; do
2094 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2097 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2098 if test x"$use_gcc_tgmath" = xyes
2099 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2102 # Define collect2 in Makefile.
2103 case $host_can_use_collect2 in
2105 *) collect2='collect2$(exeext)' ;;
2107 AC_SUBST([collect2])
2109 # Add a definition of USE_COLLECT2 if system wants one.
2110 case $use_collect2 in
2111 no) use_collect2= ;;
2114 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2115 xm_defines="${xm_defines} USE_COLLECT2"
2116 case $host_can_use_collect2 in
2118 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2124 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2125 [Define to the name of the LTO plugin DSO that must be
2126 passed to the linker's -plugin=LIB option.])
2128 # ---------------------------
2129 # Assembler & linker features
2130 # ---------------------------
2132 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2133 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2134 # However when ld-new is first executed from the build tree, libtool will
2135 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2136 # to the build tree. While doing this we need to use the previous-stage
2137 # linker, or we have an infinite loop. The presence of a shell script as
2138 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2139 # the gcc/collect-ld script. So we need to know how libtool works, or
2140 # exec-tool will fail.
2142 m4_defun([_LT_CONFIG_COMMANDS], [])
2145 AC_SUBST(enable_fast_install)
2147 # Identify the assembler which will work hand-in-glove with the newly
2148 # built GCC, so that we can examine its features. This is the assembler
2149 # which will be driven by the driver program.
2151 # If build != host, and we aren't building gas in-tree, we identify a
2152 # build->target assembler and hope that it will have the same features
2153 # as the host->target assembler we'll be using.
2154 gcc_cv_gas_major_version=
2155 gcc_cv_gas_minor_version=
2156 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2158 m4_pattern_allow([AS_FOR_TARGET])dnl
2159 AS_VAR_SET_IF(gcc_cv_as,, [
2160 if test -x "$DEFAULT_ASSEMBLER"; then
2161 gcc_cv_as="$DEFAULT_ASSEMBLER"
2162 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2163 && test -f ../gas/Makefile \
2164 && test x$build = x$host; then
2165 gcc_cv_as=../gas/as-new$build_exeext
2166 elif test -x as$build_exeext; then
2167 # Build using assembler in the current directory.
2168 gcc_cv_as=./as$build_exeext
2169 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2170 gcc_cv_as="$AS_FOR_TARGET"
2172 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2175 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2176 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2177 case "$ORIGINAL_AS_FOR_TARGET" in
2178 ./as | ./as$build_exeext) ;;
2179 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2182 AC_MSG_CHECKING(what assembler to use)
2183 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2184 # Single tree build which includes gas. We want to prefer it
2185 # over whatever linker top-level may have detected, since
2186 # we'll use what we're building after installation anyway.
2187 AC_MSG_RESULT(newly built gas)
2189 _gcc_COMPUTE_GAS_VERSION
2190 in_tree_gas_is_elf=no
2191 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2192 || (grep 'obj_format = multi' ../gas/Makefile \
2193 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2195 in_tree_gas_is_elf=yes
2198 AC_MSG_RESULT($gcc_cv_as)
2204 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2205 [case "${enableval}" in
2211 install_gold_as_default=no
2213 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2214 [case "${enableval}" in
2216 install_gold_as_default=yes
2219 if test x${default_ld} != x; then
2220 install_gold_as_default=yes
2226 AC_MSG_ERROR([invalid --enable-gold argument])
2230 # Identify the linker which will work hand-in-glove with the newly
2231 # built GCC, so that we can examine its features. This is the linker
2232 # which will be driven by the driver program.
2234 # If build != host, and we aren't building gas in-tree, we identify a
2235 # build->target linker and hope that it will have the same features
2236 # as the host->target linker we'll be using.
2237 gcc_cv_gld_major_version=
2238 gcc_cv_gld_minor_version=
2239 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2240 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2241 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2243 AS_VAR_SET_IF(gcc_cv_ld,, [
2244 if test -x "$DEFAULT_LINKER"; then
2245 gcc_cv_ld="$DEFAULT_LINKER"
2246 elif test $install_gold_as_default = yes \
2247 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2248 && test -f ../gold/Makefile \
2249 && test x$build = x$host; then
2250 gcc_cv_ld=../gold/ld-new$build_exeext
2251 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2252 && test -f ../ld/Makefile \
2253 && test x$build = x$host; then
2254 gcc_cv_ld=../ld/ld-new$build_exeext
2255 elif test -x collect-ld$build_exeext; then
2256 # Build using linker in the current directory.
2257 gcc_cv_ld=./collect-ld$build_exeext
2258 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2259 gcc_cv_ld="$LD_FOR_TARGET"
2261 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2264 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2265 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2266 # if the PLUGIN_LD is set ld-new, just have it as ld
2267 # as that is the installed named.
2268 if test x$PLUGIN_LD_SUFFIX = xld-new \
2269 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2272 AC_ARG_WITH(plugin-ld,
2273 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2274 [if test x"$withval" != x; then
2275 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2276 PLUGIN_LD_SUFFIX="$withval"
2278 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2279 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2281 # Check to see if we are using gold instead of ld
2282 AC_MSG_CHECKING(whether we are using gold)
2284 if test x$gcc_cv_ld != x; then
2285 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2286 | grep "GNU gold" > /dev/null; then
2290 AC_MSG_RESULT($ld_is_gold)
2292 AC_MSG_CHECKING(gold linker with split stack support as non default)
2293 # Check to see if default ld is not gold, but gold is
2294 # available and has support for split stack. If gcc was configured
2295 # with gold then no checking is done.
2297 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2299 # For platforms other than powerpc64*, enable as appropriate.
2302 ld_gold=`which ${gcc_cv_ld}.gold`
2303 # Make sure this gold has minimal split stack support
2304 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2305 ld_vers=`$ld_gold --version | sed 1q`
2306 gold_vers=`echo $ld_vers | sed -n \
2307 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2309 # check that the gold version contains the complete split stack support
2310 # on powerpc64 big and little endian
2312 case "$gold_vers" in
2313 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2315 *) gold_non_default=no
2321 if test $gold_non_default = yes; then
2322 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2323 [Define if the gold linker supports split stack and is available as a non-default])
2326 AC_MSG_RESULT($gold_non_default)
2328 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2329 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2330 case "$ORIGINAL_LD_FOR_TARGET" in
2331 ./collect-ld | ./collect-ld$build_exeext) ;;
2332 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2335 AC_MSG_CHECKING(what linker to use)
2336 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2337 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2338 # Single tree build which includes ld. We want to prefer it
2339 # over whatever linker top-level may have detected, since
2340 # we'll use what we're building after installation anyway.
2341 AC_MSG_RESULT(newly built ld)
2343 in_tree_ld_is_elf=no
2344 if (grep 'EMUL = .*elf' ../ld/Makefile \
2345 || grep 'EMUL = .*linux' ../ld/Makefile \
2346 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2347 in_tree_ld_is_elf=yes
2348 elif test "$ld_is_gold" = yes; then
2349 in_tree_ld_is_elf=yes
2351 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in
2354 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2355 if test x$gcc_cv_gld_version != x; then
2359 case $gcc_cv_gld_version in
2362 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2365 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2366 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2368 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2369 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2371 AC_MSG_RESULT($gcc_cv_ld)
2373 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2374 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2375 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2378 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2379 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2381 # Figure out what nm we will be using.
2382 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2383 AS_VAR_SET_IF(gcc_cv_nm,, [
2384 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2385 && test -f ../binutils/Makefile \
2386 && test x$build = x$host; then
2387 gcc_cv_nm=../binutils/nm-new$build_exeext
2388 elif test -x nm$build_exeext; then
2389 gcc_cv_nm=./nm$build_exeext
2390 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2391 gcc_cv_nm="$NM_FOR_TARGET"
2393 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2396 AC_MSG_CHECKING(what nm to use)
2397 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2398 # Single tree build which includes binutils.
2399 AC_MSG_RESULT(newly built nm)
2402 AC_MSG_RESULT($gcc_cv_nm)
2406 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2407 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2408 case "$ORIGINAL_NM_FOR_TARGET" in
2409 ./nm | ./nm$build_exeext) ;;
2410 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2414 # Figure out what objdump we will be using.
2415 AS_VAR_SET_IF(gcc_cv_objdump,, [
2416 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2417 && test -f ../binutils/Makefile \
2418 && test x$build = x$host; then
2419 # Single tree build which includes binutils.
2420 gcc_cv_objdump=../binutils/objdump$build_exeext
2421 elif test -x objdump$build_exeext; then
2422 gcc_cv_objdump=./objdump$build_exeext
2423 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2424 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2426 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2429 AC_MSG_CHECKING(what objdump to use)
2430 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2431 # Single tree build which includes binutils.
2432 AC_MSG_RESULT(newly built objdump)
2433 elif test x$gcc_cv_objdump = x; then
2434 AC_MSG_RESULT(not found)
2436 AC_MSG_RESULT($gcc_cv_objdump)
2439 # Figure out what readelf we will be using.
2440 AS_VAR_SET_IF(gcc_cv_readelf,, [
2441 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2442 && test -f ../binutils/Makefile \
2443 && test x$build = x$host; then
2444 # Single tree build which includes binutils.
2445 gcc_cv_readelf=../binutils/readelf$build_exeext
2446 elif test -x readelf$build_exeext; then
2447 gcc_cv_readelf=./readelf$build_exeext
2448 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2449 gcc_cv_readelf="$READELF_FOR_TARGET"
2451 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2454 AC_MSG_CHECKING(what readelf to use)
2455 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2456 # Single tree build which includes binutils.
2457 AC_MSG_RESULT(newly built readelf)
2458 elif test x$gcc_cv_readelf = x; then
2459 AC_MSG_RESULT(not found)
2461 AC_MSG_RESULT($gcc_cv_readelf)
2464 # Figure out what assembler alignment features are present.
2465 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2469 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2470 [Define if your assembler supports .balign and .p2align.])])
2472 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2475 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2476 [Define if your assembler supports specifying the maximum number
2477 of bytes to skip when using the GAS .p2align command.])])
2479 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2482 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2483 [Define if your assembler supports .literal16.])])
2485 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2487 [conftest_label1: .word 0
2489 conftest_label2: .word 0
2491 [if test x$gcc_cv_nm != x; then
2492 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2493 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2494 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2496 else gcc_cv_as_subsection_m1=yes
2498 rm -f conftest.nm1 conftest.nm2
2500 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2501 [Define if your assembler supports .subsection and .subsection -1 starts
2502 emitting at the beginning of your section.])])
2504 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2507 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2509 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2511 [ .weakref foobar, barfnot],,
2512 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2514 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2517 .NSUBSPA $CODE$,COMDAT],,
2518 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2520 # .hidden needs to be supported in both the assembler and the linker,
2521 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2522 # This is irritatingly difficult to feature test for; we have to check the
2523 # date string after the version number. If we've got an in-tree
2524 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2526 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2529 conftest_s=' .globl foobar,hidden'
2532 conftest_s=' .hidden foobar
2536 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2537 [elf,2,13,0],, [$conftest_s])
2540 # Darwin as has some visibility support, though with a different syntax.
2541 gcc_cv_as_hidden=yes
2545 # gnu_indirect_function type is an extension proposed at
2546 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2547 # selection of function implementation
2548 AC_ARG_ENABLE(gnu-indirect-function,
2549 [AS_HELP_STRING([--enable-gnu-indirect-function],
2550 [enable the use of the @gnu_indirect_function to glibc systems])],
2551 [case $enable_gnu_indirect_function in
2553 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2554 Valid choices are 'yes' and 'no'.]) ;;
2556 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2558 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2559 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2560 [Define if your system supports gnu indirect functions.])
2564 if test $in_tree_ld != yes ; then
2565 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2566 if echo "$ld_ver" | grep GNU > /dev/null; then
2567 if test x"$ld_is_gold" = xyes; then
2568 # GNU gold --version looks like this:
2570 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2572 # We extract the binutils version which is more familiar and specific
2573 # than the gold version.
2574 ld_vers=`echo $ld_ver | sed -n \
2575 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2577 # GNU ld --version looks like this:
2579 # GNU ld (GNU Binutils) 2.21.51.20110225
2580 ld_vers=`echo $ld_ver | sed -n \
2581 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2583 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2584 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2585 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2586 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2590 # Solaris 2 ld -V output looks like this for a regular version:
2592 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2594 # but test versions add stuff at the end:
2596 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2598 # In Solaris 11.4, this was changed to
2600 # ld: Solaris ELF Utilities: 11.4-1.3123
2602 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2603 # numbers can be used in ld.so.1 feature checks even if a different
2604 # linker is configured.
2605 ld_ver=`$gcc_cv_ld -V 2>&1`
2606 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2607 ld_vers=`echo $ld_ver | sed -n \
2608 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2609 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2610 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2618 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2619 [[if test $in_tree_ld = yes ; then
2621 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2622 && test $in_tree_ld_is_elf = yes; then
2623 gcc_cv_ld_hidden=yes
2626 gcc_cv_ld_hidden=yes
2627 if test x"$ld_is_gold" = xyes; then
2629 elif echo "$ld_ver" | grep GNU > /dev/null; then
2631 mmix-knuth-mmixware)
2632 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2636 if test 0"$ld_date" -lt 20020404; then
2637 if test -n "$ld_date"; then
2638 # If there was date string, but was earlier than 2002-04-04, fail
2640 elif test -z "$ld_vers"; then
2641 # If there was no date string nor ld version number, something is wrong
2644 test -z "$ld_vers_patch" && ld_vers_patch=0
2645 if test "$ld_vers_major" -lt 2; then
2647 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2648 gcc_cv_ld_hidden="no"
2649 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2657 gcc_cv_ld_hidden=yes
2660 # Darwin ld has some visibility support.
2661 gcc_cv_ld_hidden=yes
2663 hppa64*-*-hpux* | ia64*-*-hpux*)
2664 gcc_cv_ld_hidden=yes
2666 *-*-solaris2.1[0-9]*)
2667 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2668 # .symbolic was only added in Solaris 9 12/02.
2669 gcc_cv_ld_hidden=yes
2677 libgcc_visibility=no
2678 AC_SUBST(libgcc_visibility)
2679 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2680 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2681 libgcc_visibility=yes
2682 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2683 [Define if your assembler and linker support .hidden.])
2686 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2687 gcc_cv_ld_ro_rw_mix=unknown
2688 if test $in_tree_ld = yes ; then
2689 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2690 && test $in_tree_ld_is_elf = yes; then
2691 gcc_cv_ld_ro_rw_mix=read-write
2693 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2694 echo '.section myfoosect, "a"' > conftest1.s
2695 echo '.section myfoosect, "aw"' > conftest2.s
2696 echo '.byte 1' >> conftest2.s
2697 echo '.section myfoosect, "a"' > conftest3.s
2698 echo '.byte 0' >> conftest3.s
2699 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2700 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2701 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2702 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2703 conftest2.o conftest3.o > /dev/null 2>&1; then
2704 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2705 | sed -e '/myfoosect/!d' -e N`
2706 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2707 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2708 gcc_cv_ld_ro_rw_mix=read-only
2710 gcc_cv_ld_ro_rw_mix=read-write
2715 rm -f conftest.* conftest[123].*
2718 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2719 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2720 [Define if your linker links a mix of read-only
2721 and read-write sections into a read-write section.])
2723 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2725 gcc_AC_INITFINI_ARRAY
2727 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2728 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2736 [[# GAS versions before 2.11 do not support uleb128,
2737 # despite appearing to.
2738 # ??? There exists an elf-specific test that will crash
2739 # the assembler. Perhaps it's better to figure out whether
2740 # arbitrary sections are supported and try the test.
2741 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2742 if echo "$as_ver" | grep GNU > /dev/null; then
2743 as_vers=`echo $as_ver | sed -n \
2744 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2745 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2746 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2747 if test $as_major -eq 2 && test $as_minor -lt 11
2749 else gcc_cv_as_leb128=yes
2752 [AC_DEFINE(HAVE_AS_LEB128, 1,
2753 [Define if your assembler supports .sleb128 and .uleb128.])],
2754 [AC_DEFINE(HAVE_AS_LEB128, 0,
2755 [Define if your assembler supports .sleb128 and .uleb128.])])
2757 # Determine if an .eh_frame section is read-only.
2758 gcc_fn_eh_frame_ro () {
2759 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2760 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2761 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2764 # Check if we have assembler support for unwind directives.
2765 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2772 .cfi_escape 1, 2, 3, 4, 5
2776 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2777 # read-only and read-write sections, we need to make sure that the
2778 # assembler used emits read-write .eh_frame sections.
2779 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2780 gcc_cv_as_cfi_directive=yes
2781 elif test "x$gcc_cv_objdump" = x; then
2782 # No objdump, err on the side of caution.
2783 gcc_cv_as_cfi_directive=no
2785 if test x$gas = xyes; then
2793 sparc*-*-solaris2.*)
2794 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2795 if gcc_fn_eh_frame_ro $as_32_opt \
2796 || gcc_fn_eh_frame_ro $as_64_opt; then
2797 gcc_cv_as_cfi_directive=no
2799 gcc_cv_as_cfi_directive=yes
2802 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2803 # On Solaris/x86, make sure that GCC and assembler agree on using
2804 # read-only .eh_frame sections for 64-bit.
2805 if gcc_fn_eh_frame_ro $as_32_opt; then
2806 gcc_cv_as_cfi_directive=no
2807 elif gcc_fn_eh_frame_ro $as_64_opt; then
2808 gcc_cv_as_cfi_directive=yes
2810 gcc_cv_as_cfi_directive=no
2817 gcc_cv_as_cfi_directive=yes
2820 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2821 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2825 .cfi_adjust_cfa_offset 64
2827 .cfi_adjust_cfa_offset 128
2830 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2831 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2832 gcc_cv_as_cfi_advance_working=yes
2836 # no objdump, err on the side of caution
2837 gcc_cv_as_cfi_advance_working=no
2839 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2840 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2841 [`if test $gcc_cv_as_cfi_directive = yes \
2842 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2843 [Define 0/1 if your assembler supports CFI directives.])
2845 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2846 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2847 gcc_cv_as_cfi_personality_directive, ,,
2850 .cfi_personality 0, symbol
2852 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2853 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2854 then echo 1; else echo 0; fi`],
2855 [Define 0/1 if your assembler supports .cfi_personality.])
2857 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2858 gcc_cv_as_cfi_sections_directive, ,,
2860 .cfi_sections .debug_frame, .eh_frame
2864 win32 | pe | cygwin* | mingw32*)
2865 # Need to check that we generated the correct relocation for the
2866 # .debug_frame section. This was fixed for binutils 2.21.
2867 gcc_cv_as_cfi_sections_directive=no
2868 if test "x$gcc_cv_objdump" != x; then
2869 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2870 grep secrel > /dev/null; then
2871 gcc_cv_as_cfi_sections_directive=yes
2876 gcc_cv_as_cfi_sections_directive=yes
2879 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2880 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2881 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2882 then echo 1; else echo 0; fi`],
2883 [Define 0/1 if your assembler supports .cfi_sections.])
2885 # GAS versions up to and including 2.11.0 may mis-optimize
2887 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2895 .section .eh_frame,"aw",@progbits
2897 .4byte .LECIE1-.LSCIE1
2911 .4byte .LEFDE1-.LASFDE1
2913 .4byte .LASFDE1-__FRAME_BEGIN__
2921 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2922 cat > conftest.lit <<EOF
2923 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2924 0010 01000000 12000000 18000000 00000000 ................
2925 0020 08000000 04080000 0044 .........D @&t@
2927 cat > conftest.big <<EOF
2928 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2929 0010 00000001 00000012 00000018 00000000 ................
2930 0020 00000008 04000000 0844 .........D @&t@
2932 # If the assembler didn't choke, and we can objdump,
2933 # and we got the correct data, then succeed.
2934 # The text in the here-document typically retains its unix-style line
2935 # endings, while the output of objdump will use host line endings.
2936 # Therefore, use diff -b for the comparisons.
2937 if test x$gcc_cv_objdump != x \
2938 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2939 | tail -3 > conftest.got \
2940 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2941 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2943 gcc_cv_as_eh_frame=yes
2944 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2945 gcc_cv_as_eh_frame=buggy
2947 # Uh oh, what do we do now?
2948 gcc_cv_as_eh_frame=no
2951 if test $gcc_cv_as_eh_frame = buggy; then
2952 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2953 [Define if your assembler mis-optimizes .eh_frame data.])
2956 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2957 [elf,2,12,0], [--fatal-warnings],
2958 [.section .rodata.str, "aMS", @progbits, 1])
2959 if test $gcc_cv_as_shf_merge = no; then
2960 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2961 [elf,2,12,0], [--fatal-warnings],
2962 [.section .rodata.str, "aMS", %progbits, 1])
2965 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
2966 # SHF_MERGE support in Solaris 10/x86 ld is broken.
2967 if test x"$gnu_ld" = xno; then
2968 gcc_cv_as_shf_merge=no
2972 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2973 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2974 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2976 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2977 [.stabs "gcc2_compiled.",60,0,0,0],,
2978 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2979 [Define if your assembler supports .stabs.])])
2981 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2982 gcc_cv_as_comdat_group,
2983 [elf,2,16,0], [--fatal-warnings],
2984 [.section .text,"axG",@progbits,.foo,comdat])
2985 if test $gcc_cv_as_comdat_group = yes; then
2986 gcc_cv_as_comdat_group_percent=no
2987 gcc_cv_as_comdat_group_group=no
2989 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2990 gcc_cv_as_comdat_group_percent,
2991 [elf,2,16,0], [--fatal-warnings],
2992 [.section .text,"axG",%progbits,.foo,comdat])
2993 if test $gcc_cv_as_comdat_group_percent = yes; then
2994 gcc_cv_as_comdat_group_group=no
2997 # Sun as uses a completely different syntax.
3002 .group foo,".text%foo",#comdat
3003 .section ".text%foo", #alloc,#execinstr,#progbits
3008 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3010 .group foo,.text%foo,#comdat
3011 .section .text%foo, "ax", @progbits
3017 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3018 gcc_cv_as_comdat_group_group,
3022 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3023 gcc_cv_as_comdat_group_group=no
3027 if test x"$ld_is_gold" = xyes; then
3029 elif test $in_tree_ld = yes ; then
3031 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3032 && test $in_tree_ld_is_elf = yes; then
3035 elif echo "$ld_ver" | grep GNU > /dev/null; then
3037 if test 0"$ld_date" -lt 20050308; then
3038 if test -n "$ld_date"; then
3039 # If there was date string, but was earlier than 2005-03-08, fail
3041 elif test "$ld_vers_major" -lt 2; then
3043 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3050 *-*-solaris2.1[1-9]*)
3052 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3053 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3056 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3057 # least ld version 1.2267.
3058 if test "$ld_vers_major" -gt 1; then
3060 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3062 elif test "$ld_vers_minor" -ge 2267; then
3067 # Assume linkers other than GNU ld don't support COMDAT group.
3073 # Allow overriding the automatic COMDAT group tests above.
3074 AC_ARG_ENABLE(comdat,
3075 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3076 [comdat_group="$enable_comdat"])
3077 if test $comdat_group = no; then
3078 gcc_cv_as_comdat_group=no
3079 gcc_cv_as_comdat_group_percent=no
3080 gcc_cv_as_comdat_group_group=no
3082 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3083 [`if test $gcc_cv_as_comdat_group = yes \
3084 || test $gcc_cv_as_comdat_group_percent = yes \
3085 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3086 [Define 0/1 if your assembler and linker support COMDAT groups.])
3088 # Restrict this test to Solaris/x86: other targets define this statically.
3090 i?86-*-solaris2* | x86_64-*-solaris2*)
3091 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3092 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3096 # Full support for hidden thunks in linkonce sections only appeared in
3097 # Solaris 11/OpenSolaris.
3098 *-*-solaris2.1[[1-9]]*)
3106 AC_MSG_RESULT($hidden_linkonce)
3107 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3108 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3109 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3113 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3114 gcc_cv_as_discriminator,
3118 .loc 1 1 0 discriminator 1],,
3119 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3120 [Define if your assembler supports the .loc discriminator sub-directive.])])
3122 # Thread-local storage - the check is heavily parameterized.
3131 .section ".tdata","awT",@progbits
3134 ldq $27,__tls_get_addr($29) !literal!1
3135 lda $16,foo($29) !tlsgd!1
3136 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3137 ldq $27,__tls_get_addr($29) !literal!2
3138 lda $16,foo($29) !tlsldm!2
3139 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3140 ldq $1,foo($29) !gotdtprel
3141 ldah $2,foo($29) !dtprelhi
3142 lda $3,foo($2) !dtprello
3143 lda $4,foo($29) !dtprel
3144 ldq $1,foo($29) !gottprel
3145 ldah $2,foo($29) !tprelhi
3146 lda $3,foo($2) !tprello
3147 lda $4,foo($29) !tprel'
3150 tls_as_opt=--fatal-warnings
3154 add_s r0,r0, @foo@tpoff'
3158 cris-*-*|crisv32-*-*)
3160 .section ".tdata","awT",@progbits
3167 tls_as_opt=--fatal-warnings
3171 .section ".tdata","awT",@progbits
3183 .section ".tdata","awT",@progbits
3187 addil LT%foo-$tls_gdidx$,gp
3188 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3191 addil LT%foo-$tls_ldidx$,gp
3193 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3194 addil LR%foo-$tls_dtpoff$,%ret0
3195 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3197 addil LT%foo-$tls_ieoff$,gp
3198 ldw RT%foo-$tls_ieoff$(%r1),%t2
3201 addil LR%foo-$tls_leoff$,%t1
3202 ldo RR%foo-$tls_leoff$(%r1),%t2'
3205 tls_as_opt=--fatal-warnings
3209 .section ".tdata","awT",%progbits
3220 i[34567]86-*-* | x86_64-*-*)
3222 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3229 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3231 .section .tdata,"awt",@progbits'
3236 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3237 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3241 .section ".tdata","awT",@progbits'
3245 tls_as_opt="--fatal-warnings"
3249 conftest_s="$conftest_s
3253 leal foo@tlsgd(,%ebx,1), %eax
3254 leal foo@tlsldm(%ebx), %eax
3255 leal foo@dtpoff(%eax), %edx
3256 movl foo@gottpoff(%ebx), %eax
3257 subl foo@gottpoff(%ebx), %eax
3258 addl foo@gotntpoff(%ebx), %eax
3259 movl foo@indntpoff, %eax
3260 movl \$foo@tpoff, %eax
3261 subl \$foo@tpoff, %eax
3262 leal foo@ntpoff(%ecx), %eax"
3265 if test x$on_solaris = xyes; then
3267 yes) tls_as_opt="$tls_as_opt --64" ;;
3268 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3271 conftest_s="$conftest_s
3275 leaq foo@tlsgd(%rip), %rdi
3276 leaq foo@tlsld(%rip), %rdi
3277 leaq foo@dtpoff(%rax), %rdx
3278 movq foo@gottpoff(%rip), %rax
3279 movq \$foo@tpoff, %rax"
3285 .section ".tdata","awT",@progbits
3288 addl r16 = @ltoff(@dtpmod(foo#)), gp
3289 addl r17 = @ltoff(@dtprel(foo#)), gp
3290 addl r18 = @ltoff(@tprel(foo#)), gp
3291 addl r19 = @dtprel(foo#), gp
3292 adds r21 = @dtprel(foo#), r13
3293 movl r23 = @dtprel(foo#)
3294 addl r20 = @tprel(foo#), gp
3295 adds r22 = @tprel(foo#), r13
3296 movl r24 = @tprel(foo#)'
3299 tls_as_opt=--fatal-warnings
3303 .section .tdata,"awT",@progbits
3307 addik r5,r20,x@TLSGD
3308 addik r5,r20,x@TLSLDM'
3311 tls_as_opt='--fatal-warnings'
3315 .section .tdata,"awT",@progbits
3319 addiu $4, $28, %tlsgd(x)
3320 addiu $4, $28, %tlsldm(x)
3321 lui $4, %dtprel_hi(x)
3322 addiu $4, $4, %dtprel_lo(x)
3323 lw $4, %gottprel(x)($28)
3324 lui $4, %tprel_hi(x)
3325 addiu $4, $4, %tprel_lo(x)'
3328 tls_as_opt='-32 --fatal-warnings'
3332 .section .tdata,"awT",@progbits
3337 move.l x@TLSGD(%a5),%a0
3338 move.l x@TLSLDM(%a5),%a0
3339 move.l x@TLSLDO(%a5),%a0
3340 move.l x@TLSIE(%a5),%a0
3341 move.l x@TLSLE(%a5),%a0'
3344 tls_as_opt='--fatal-warnings'
3348 .section ".tdata","awT",@progbits'
3351 tls_as_opt="--fatal-warnings"
3355 .section ".tdata","awT",%progbits
3359 add x0, x0, #:tlsgd_lo12:x
3364 tls_as_opt='--fatal-warnings'
3368 .extern __get_tpointer
3386 .section ".tdata","awT",@progbits
3394 addi 3,2,ld0@got@tlsgd
3400 addi 3,2,x1@got@tlsld
3406 addis 9,3,x2@dtprel@ha
3407 addi 9,9,x2@dtprel@l
3410 ld 9,x3@got@dtprel(2)
3416 tls_as_opt="-a64 --fatal-warnings"
3420 .section ".tdata","awT",@progbits
3428 addi 3,31,ld0@got@tlsgd
3430 addi 3,31,x1@got@tlsld
3433 addis 9,3,x2@dtprel@ha
3434 addi 9,9,x2@dtprel@l
3435 lwz 9,x3@got@tprel(31)
3438 addis 9,2,x2@tprel@ha
3439 addi 9,9,x2@tprel@l'
3442 tls_as_opt="-a32 --fatal-warnings"
3446 .section .tdata,"awT",@progbits
3450 call __tls_get_addr'
3453 tls_as_opt='--fatal-warnings'
3457 .section ".tdata","awT",@progbits
3466 l %r1,foo@GOTNTPOFF(%r12)
3467 l %r1,0(%r1):tls_load:foo
3468 bas %r14,0(%r1,%r13):tls_gdcall:foo
3469 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3472 tls_as_opt="-m31 --fatal-warnings"
3476 .section ".tdata","awT",@progbits
3484 lg %r1,foo@GOTNTPOFF(%r12)
3485 larl %r1,foo@INDNTPOFF
3486 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3487 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3490 tls_as_opt="-m64 -Aesame --fatal-warnings"
3492 sh-*-* | sh[123456789lbe]*-*-*)
3494 .section ".tdata","awT",@progbits
3504 tls_as_opt=--fatal-warnings
3508 sparc*-sun-solaris2.*)
3515 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3517 .section ".tdata",#alloc,#write,#tls'
3522 .section ".tdata","awT",@progbits'
3525 tls_as_opt="-32 --fatal-warnings"
3527 conftest_s="$conftest_s
3530 sethi %tgd_hi22(foo), %o0
3531 add %o0, %tgd_lo10(foo), %o1
3532 add %l7, %o1, %o0, %tgd_add(foo)
3533 call __tls_get_addr, %tgd_call(foo)
3534 sethi %tldm_hi22(foo), %l1
3535 add %l1, %tldm_lo10(foo), %l2
3536 add %l7, %l2, %o0, %tldm_add(foo)
3537 call __tls_get_addr, %tldm_call(foo)
3538 sethi %tldo_hix22(foo), %l3
3539 xor %l3, %tldo_lox10(foo), %l4
3540 add %o0, %l4, %l5, %tldo_add(foo)
3541 sethi %tie_hi22(foo), %o3
3542 add %o3, %tie_lo10(foo), %o3
3543 ld [%l7 + %o3], %o2, %tie_ld(foo)
3544 add %g7, %o2, %o4, %tie_add(foo)
3545 sethi %tle_hix22(foo), %l1
3546 xor %l1, %tle_lox10(foo), %o5
3547 ld [%g7 + %o5], %o1"
3551 .section ".tdata","awT",@progbits
3554 addli r0, zero, tls_gd(foo)
3555 auli r0, zero, tls_gd_ha16(foo)
3556 addli r0, r0, tls_gd_lo16(foo)
3558 addli r0, zero, tls_ie(foo)
3559 auli r0, r0, tls_ie_ha16(foo)
3560 addli r0, r0, tls_ie_lo16(foo)'
3563 tls_as_opt="--fatal-warnings"
3567 .section ".tdata","awT",@progbits
3570 shl16insli r0, zero, hw0_last_tls_gd(foo)
3571 shl16insli r0, zero, hw1_last_tls_gd(foo)
3572 shl16insli r0, r0, hw0_tls_gd(foo)
3574 shl16insli r0, zero, hw1_last_tls_ie(foo)
3575 shl16insli r0, r0, hw0_tls_ie(foo)'
3578 tls_as_opt="--fatal-warnings"
3582 .section ".tdata","awT",@progbits
3585 movi a8, foo@TLSFUNC
3586 movi a10, foo@TLSARG
3587 callx8.tls a8, foo@TLSCALL'
3594 if test "x$enable_tls" = xno ; then
3595 : # TLS explicitly disabled.
3596 elif test "x$enable_tls" = xyes ; then
3597 set_have_as_tls=yes # TLS explicitly enabled.
3598 elif test -z "$tls_first_major"; then
3599 : # If we don't have a check, assume no support.
3601 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3602 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3603 [set_have_as_tls=yes])
3605 if test $set_have_as_tls = yes ; then
3606 AC_DEFINE(HAVE_AS_TLS, 1,
3607 [Define if your assembler and linker support thread-local storage.])
3610 # Target-specific assembler checks.
3612 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3613 gcc_cv_ld_static_dynamic=no
3614 gcc_cv_ld_static_option='-Bstatic'
3615 gcc_cv_ld_dynamic_option='-Bdynamic'
3616 if test $in_tree_ld = yes ; then
3617 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3618 gcc_cv_ld_static_dynamic=yes
3620 elif test x$gcc_cv_ld != x; then
3621 # Check if linker supports -Bstatic/-Bdynamic option
3622 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3623 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3624 gcc_cv_ld_static_dynamic=yes
3627 # AIX ld uses -b flags
3628 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3629 gcc_cv_ld_static_dynamic=yes
3630 gcc_cv_ld_static_option="-bstatic"
3631 gcc_cv_ld_dynamic_option="-bdynamic"
3633 # HP-UX ld uses -a flags to select between shared and archive.
3635 if test x"$gnu_ld" = xno; then
3636 gcc_cv_ld_static_dynamic=yes
3637 gcc_cv_ld_static_option="-aarchive_shared"
3638 gcc_cv_ld_dynamic_option="-adefault"
3641 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3643 gcc_cv_ld_static_dynamic=yes
3648 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3649 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3650 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3651 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3652 [Define to the linker option to disable use of shared objects.])
3653 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3654 [Define to the linker option to enable use of shared objects.])
3656 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3658 AC_MSG_CHECKING(linker --version-script option)
3659 gcc_cv_ld_version_script=no
3660 ld_version_script_option=''
3661 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3662 gcc_cv_ld_version_script=yes
3663 ld_version_script_option='--version-script'
3664 elif test x$gcc_cv_ld != x; then
3666 # Solaris 2 ld always supports -M. It also supports a subset of
3667 # --version-script since Solaris 11.4, but requires
3668 # -z gnu-version-script-compat to activate.
3670 gcc_cv_ld_version_script=yes
3671 ld_version_script_option='-M'
3675 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3676 AC_MSG_RESULT($gcc_cv_ld_version_script)
3677 AC_SUBST(ld_version_script_option)
3679 AC_MSG_CHECKING(linker soname option)
3681 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3682 gcc_cv_ld_soname=yes
3683 ld_soname_option='-soname'
3684 elif test x$gcc_cv_ld != x; then
3687 gcc_cv_ld_soname=yes
3688 ld_soname_option='-install_name'
3690 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3691 # ld compatiblity since some Solaris 10 update.
3693 gcc_cv_ld_soname=yes
3694 ld_soname_option='-h'
3698 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3699 AC_MSG_RESULT($gcc_cv_ld_soname)
3700 AC_SUBST(ld_soname_option)
3702 if test x"$demangler_in_ld" = xyes; then
3703 AC_MSG_CHECKING(linker --demangle support)
3704 gcc_cv_ld_demangle=no
3705 if test $in_tree_ld = yes; then
3706 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3707 gcc_cv_ld_demangle=yes
3709 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3710 # Check if the GNU linker supports --demangle option
3711 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3712 gcc_cv_ld_demangle=yes
3715 if test x"$gcc_cv_ld_demangle" = xyes; then
3716 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3717 [Define if your linker supports --demangle option.])
3719 AC_MSG_RESULT($gcc_cv_ld_demangle)
3722 AC_MSG_CHECKING(linker plugin support)
3724 if test -f liblto_plugin.la; then
3725 save_ld_ver="$ld_ver"
3726 save_ld_vers_major="$ld_vers_major"
3727 save_ld_vers_minor="$ld_vers_minor"
3728 save_ld_is_gold="$ld_is_gold"
3732 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3734 # FIXME: ld_is_gold?
3735 ld_vers_major="$gcc_cv_gld_major_version"
3736 ld_vers_minor="$gcc_cv_gld_minor_version"
3738 # Determine plugin linker version.
3739 # FIXME: Partial duplicate from above, generalize.
3741 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3742 if echo "$ld_ver" | grep GNU > /dev/null; then
3743 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3745 ld_vers=`echo $ld_ver | sed -n \
3746 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3748 ld_vers=`echo $ld_ver | sed -n \
3749 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3751 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3752 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3757 # Determine plugin support.
3758 if echo "$ld_ver" | grep GNU > /dev/null; then
3759 # Require GNU ld or gold 2.21+ for plugin support by default.
3760 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3762 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3763 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3768 ld_ver="$save_ld_ver"
3769 ld_vers_major="$save_ld_vers_major"
3770 ld_vers_minor="$save_ld_vers_minor"
3771 ld_is_gold="$save_ld_is_gold"
3773 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3774 [Define to the level of your linker's plugin support.])
3775 AC_MSG_RESULT($gcc_cv_lto_plugin)
3777 # Target OS-specific assembler checks.
3779 case "$target_os" in
3781 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3782 gcc_cv_as_mmacosx_version_min,,
3783 [-mmacosx-version-min=10.1], [.text],,
3784 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3785 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3789 # Target CPU-specific assembler checks.
3793 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3794 [-mabi=lp64], [.text],,,)
3795 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3796 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3797 [Define if your assembler supports the -mabi option.])
3799 if test x$with_abi = xilp32; then
3800 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3801 Upgrade the Assembler.])
3803 if test x"$with_multilib_list" = xdefault; then
3804 TM_MULTILIB_CONFIG=lp64
3806 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3807 for aarch64_multilib in ${aarch64_multilibs}; do
3808 case ${aarch64_multilib} in
3810 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3811 Upgrade the Assembler.])
3819 # Check if we have binutils support for relocations types needed by -fpic
3820 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3823 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3824 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3825 [Define if your assembler supports relocs needed by -fpic.])])
3826 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3827 AC_ARG_ENABLE(fix-cortex-a53-835769,
3829 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3830 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3831 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3832 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3837 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3842 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3843 Valid choices are 'yes' and 'no'.])
3849 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3850 AC_ARG_ENABLE(fix-cortex-a53-843419,
3852 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3853 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3854 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3855 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3860 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3865 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3866 Valid choices are 'yes' and 'no'.])
3874 # All TARGET_ABI_OSF targets.
3875 alpha*-*-linux* | alpha*-*-*bsd*)
3876 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3877 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3880 extbl $3, $2, $3 !lituse_bytoff!1
3881 ldq $2, a($29) !literal!1
3882 ldq $4, b($29) !literal!2
3883 ldq_u $3, 0($2) !lituse_base!1
3884 ldq $27, f($29) !literal!5
3885 jsr $26, ($27), f !lituse_jsr!5
3886 ldah $29, 0($26) !gpdisp!3
3887 lda $0, c($29) !gprel
3888 ldah $1, d($29) !gprelhigh
3889 lda $1, d($1) !gprellow
3890 lda $29, 0($29) !gpdisp!3],,
3891 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3892 [Define if your assembler supports explicit relocations.])])
3893 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3894 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3897 ldq $27, a($29) !literal!1
3898 jsr $26, ($27), a !lituse_jsrdirect!1],,
3899 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3900 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3904 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3905 [--mlink-relax], [.text],,
3906 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3907 [Define if your avr assembler supports --mlink-relax option.])])
3909 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3911 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3912 [Define if your avr assembler supports -mrmw option.])])
3914 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3915 gcc_cv_as_avr_mgccisr,,
3921 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3922 [Define if your avr assembler supports -mgcc-isr option.])])
3924 # Check how default linker description file implements .rodata for
3925 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3926 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3927 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3928 cat > conftest.s <<EOF
3929 .section .rodata,"a",@progbits
3931 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3936 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3937 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3938 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3939 if test -s conftest.nm
3941 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3943 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3944 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3946 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3947 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3948 cat conftest.nm >&AS_MESSAGE_LOG_FD
3949 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3950 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3953 AC_MSG_RESULT(test failed)
3954 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
3955 cat conftest.s >&AS_MESSAGE_LOG_FD
3956 AC_MSG_WARN([[see `config.log' for details]])
3958 rm -f conftest.s conftest.o conftest.elf conftest.nm
3962 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3963 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3964 [-no-mul-bug-abort], [.text],,
3965 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3966 [Define if your assembler supports the -no-mul-bug-abort option.])])
3970 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3971 [.register %g2, #scratch],,
3972 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3973 [Define if your assembler supports .register.])])
3975 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3977 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3978 [Define if your assembler supports -relax option.])])
3980 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3981 gcc_cv_as_sparc_gotdata_op,,
3988 sethi %gdop_hix22(foo), %g1
3989 xor %g1, %gdop_lox10(foo), %g1
3990 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3991 [if test x$gcc_cv_ld != x \
3992 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3993 if test x$gcc_cv_objdump != x; then
3994 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3995 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3996 gcc_cv_as_sparc_gotdata_op=no
3998 gcc_cv_as_sparc_gotdata_op=yes
4003 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4004 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4006 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4007 gcc_cv_as_sparc_ua_pcrel,,
4015 .uaword %r_disp32(foo)],
4016 [if test x$gcc_cv_ld != x \
4017 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4018 gcc_cv_as_sparc_ua_pcrel=yes
4021 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4022 [Define if your assembler and linker support unaligned PC relative relocs.])
4024 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4025 gcc_cv_as_sparc_ua_pcrel_hidden,,
4030 .uaword %r_disp32(foo)
4031 .byte 0x32, 0x33, 0x34
4036 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4037 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4038 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4039 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4040 if $gcc_cv_objdump -R conftest 2> /dev/null \
4041 | grep 'DISP32' > /dev/null 2>&1; then
4044 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4048 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4049 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4050 ]) # unaligned pcrel relocs
4052 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4053 gcc_cv_as_sparc_offsetable_lo10,,
4056 or %g1, %lo(ab) + 12, %g1
4057 or %g1, %lo(ab + 12), %g1],
4058 [if test x$gcc_cv_objdump != x \
4059 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4060 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4061 gcc_cv_as_sparc_offsetable_lo10=yes
4063 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4064 [Define if your assembler supports offsetable %lo().])])
4066 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4067 gcc_cv_as_sparc_fmaf,,
4070 .register %g2, #scratch
4071 .register %g3, #scratch
4073 fmaddd %f0, %f2, %f4, %f6
4074 addxccc %g1, %g2, %g3
4075 fsrl32 %f2, %f4, %f8
4076 fnaddd %f10, %f12, %f14],,
4077 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4078 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4080 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4081 gcc_cv_as_sparc_sparc4,,
4084 .register %g2, #scratch
4085 .register %g3, #scratch
4088 1: cwbneg %g2, %g3, 1f
4091 aes_kexpand0 %f4, %f6, %f8
4092 des_round %f38, %f40, %f42, %f44
4093 camellia_f %f54, %f56, %f58, %f60
4094 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4095 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4096 [Define if your assembler supports SPARC4 instructions.])])
4098 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4099 gcc_cv_as_sparc_sparc5,,
4102 .register %g2, #scratch
4103 .register %g3, #scratch
4106 fpadd8 %f0, %f2, %f4],,
4107 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4108 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4110 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4111 gcc_cv_as_sparc_sparc6,,
4114 .register %g2, #scratch
4115 .register %g3, #scratch
4118 fpsll64x %f0, %f2, %f4],,
4119 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4120 [Define if your assembler supports SPARC6 instructions.])])
4122 gcc_GAS_CHECK_FEATURE([LEON instructions],
4123 gcc_cv_as_sparc_leon,,
4126 .register %g2, #scratch
4127 .register %g3, #scratch
4131 casa [[%g2]] 0xb, %g3, %g1],,
4132 [AC_DEFINE(HAVE_AS_LEON, 1,
4133 [Define if your assembler supports LEON instructions.])])
4137 i[34567]86-*-* | x86_64-*-*)
4141 # Full C++ conformance when using a shared libstdc++-v3 requires some
4142 # support from the Cygwin DLL, which in more recent versions exports
4143 # wrappers to aid in interposing and redirecting operators new, delete,
4144 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4145 # are configuring for a version of Cygwin that exports the wrappers.
4146 if test x$host = x$target && test x$host_cpu = xi686; then
4147 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4149 # Can't check presence of libc functions during cross-compile, so
4150 # we just have to assume we're building for an up-to-date target.
4151 gcc_ac_cygwin_dll_wrappers=yes
4153 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4154 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4155 [Define if you want to generate code by default that assumes that the
4156 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4159 cygwin* | pe | mingw32*)
4160 # Recent binutils allows the three-operand form of ".comm" on PE. This
4161 # definition is used unconditionally to initialise the default state of
4162 # the target option variable that governs usage of the feature.
4163 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4164 [2,19,52],,[.comm foo,1,32])
4165 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4166 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4167 [Define if your assembler supports specifying the alignment
4168 of objects allocated using the GAS .comm command.])
4169 # Used for DWARF 2 in PE
4170 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4171 gcc_cv_as_ix86_pe_secrel32,
4177 [if test x$gcc_cv_ld != x \
4178 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4179 gcc_cv_as_ix86_pe_secrel32=yes
4182 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4183 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4184 # Test if the assembler supports the extended form of the .section
4185 # directive that specifies section alignment. LTO support uses this,
4186 # but normally only after installation, so we warn but don't fail the
4187 # configure if LTO is enabled but the assembler does not support it.
4188 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4189 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4190 if test x$gcc_cv_as_section_has_align != xyes; then
4191 case ",$enable_languages," in
4193 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4200 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4201 [-xbrace_comment=no], [.text],,
4202 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4203 [Define if your assembler supports -xbrace_comment option.])])
4205 # Test if the assembler supports the section flag 'e' for specifying
4206 # an excluded section.
4207 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4208 [2,22,51], [--fatal-warnings],
4211 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4212 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4213 [Define if your assembler supports specifying the section flag e.])
4215 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4216 gcc_cv_as_ix86_filds,,,
4217 [filds (%ebp); fists (%ebp)],,
4218 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4219 [Define if your assembler uses filds and fists mnemonics.])])
4221 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4222 gcc_cv_as_ix86_fildq,,,
4223 [fildq (%ebp); fistpq (%ebp)],,
4224 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4225 [Define if your assembler uses fildq and fistq mnemonics.])])
4227 gcc_GAS_CHECK_FEATURE([cmov syntax],
4228 gcc_cv_as_ix86_cmov_sun_syntax,,,
4229 [cmovl.l %edx, %eax],,
4230 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4231 [Define if your assembler supports the Sun syntax for cmov.])])
4233 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4234 gcc_cv_as_ix86_ffreep,,,
4236 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4237 [Define if your assembler supports the ffreep mnemonic.])])
4239 gcc_GAS_CHECK_FEATURE([.quad directive],
4240 gcc_cv_as_ix86_quad,,,
4242 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4243 [Define if your assembler supports the .quad directive.])])
4245 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4246 gcc_cv_as_ix86_sahf,,,
4249 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4250 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4252 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4253 gcc_cv_as_ix86_interunit_movq,,,
4257 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4258 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4259 [Define if your assembler supports interunit movq mnemonic.])
4261 gcc_GAS_CHECK_FEATURE([hle prefixes],
4262 gcc_cv_as_ix86_hle,,,
4263 [lock xacquire cmpxchg %esi, (%ecx)],,
4264 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4265 [Define if your assembler supports HLE prefixes.])])
4267 gcc_GAS_CHECK_FEATURE([swap suffix],
4268 gcc_cv_as_ix86_swap,,,
4269 [movl.s %esp, %ebp],,
4270 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4271 [Define if your assembler supports the swap suffix.])])
4273 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4274 gcc_cv_as_ix86_diff_sect_delta,,,
4282 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4283 [Define if your assembler supports the subtraction of symbols in different sections.])])
4285 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4286 gcc_cv_as_ix86_rep_lock_prefix,,,
4292 lock addl %edi, (%eax,%esi)
4293 lock orl $0, (%esp)],,
4294 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4295 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4297 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4298 gcc_cv_as_ix86_ud2,,,
4300 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4301 [Define if your assembler supports the 'ud2' mnemonic.])])
4303 # Enforce 32-bit output with gas and gld.
4304 if test x$gas = xyes; then
4305 as_ix86_gas_32_opt="--32"
4307 if echo "$ld_ver" | grep GNU > /dev/null; then
4308 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4309 ld_ix86_gld_32_opt="-melf_i386_sol2"
4311 ld_ix86_gld_32_opt="-melf_i386"
4315 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4316 gcc_cv_as_ix86_tlsgdplt,,
4317 [$as_ix86_gas_32_opt],
4318 [call tls_gd@tlsgdplt],
4319 [if test x$gcc_cv_ld != x \
4320 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4321 gcc_cv_as_ix86_tlsgdplt=yes
4324 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4325 [Define if your assembler and linker support @tlsgdplt.])])
4328 .section .tdata,"aw'$tls_section_flag'",@progbits
4330 .section .text,"ax",@progbits
4331 call tls_ld@tlsldmplt'
4333 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4334 gcc_cv_as_ix86_tlsldmplt,,
4335 [$as_ix86_gas_32_opt],
4337 [if test x$gcc_cv_ld != x \
4338 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4339 gcc_cv_as_ix86_tlsldmplt=yes
4342 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4343 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4344 [Define to 1 if your assembler and linker support @tlsldmplt.])
4347 .section .text,"ax",@progbits
4349 .type _start, @function
4351 leal value@tlsldm(%ebx), %eax
4352 call ___tls_get_addr@plt
4354 .section .tdata,"aw'$tls_section_flag'",@progbits
4355 .type value, @object
4357 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4358 gcc_cv_as_ix86_tlsldm,,
4359 [$as_ix86_gas_32_opt],
4361 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4362 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4363 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4364 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4365 gcc_cv_as_ix86_tlsldm=yes
4369 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4370 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4371 [Define to 1 if your assembler and linker support @tlsldm.])
4382 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4383 gcc_cv_as_ix86_got32x,,
4384 [$as_ix86_gas_32_opt],
4386 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4387 && test x$gcc_cv_readelf != x \
4388 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4389 | grep R_386_GOT32X > /dev/null 2>&1 \
4390 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4391 if $gcc_cv_objdump -dw conftest 2>&1 \
4392 | grep 0xffffff > /dev/null 2>&1; then
4393 gcc_cv_as_ix86_got32x=no
4395 gcc_cv_as_ix86_got32x=yes
4399 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4400 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4401 [Define 0/1 if your assembler and linker support @GOT.])
4403 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4404 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4405 [$as_ix86_gas_32_opt],
4411 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4412 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4413 [Define true if the assembler supports '.long foo@GOTOFF'.])
4416 .section .text,"ax",@progbits
4418 .type _start, @function
4420 leal ld@tlsldm(%ecx), %eax
4421 call *___tls_get_addr@GOT(%ecx)
4422 leal gd@tlsgd(%ecx), %eax
4423 call *___tls_get_addr@GOT(%ecx)
4425 .section .tdata,"aw'$tls_section_flag'",@progbits
4433 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4434 gcc_cv_as_ix86_tls_get_addr_via_got,,
4435 [$as_ix86_gas_32_opt],
4437 [if test x$gcc_cv_ld != x \
4438 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4439 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4442 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4443 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4444 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4448 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4449 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4451 addl r15 = @ltoffx(x#), gp
4453 ld8.mov r16 = [[r15]], x#],,
4454 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4455 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4463 gcc_GAS_CHECK_FEATURE([.machine directive support],
4464 gcc_cv_as_machine_directive,,,
4465 [ .machine ppc7400])
4466 if test x$gcc_cv_as_machine_directive != xyes; then
4467 echo "*** This target requires an assembler supporting \".machine\"" >&2
4468 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4469 test x$build = x$target && exit 1
4475 *-*-aix*) conftest_s=' .machine "pwr5"
4478 *-*-darwin*) conftest_s=' .text
4480 *) conftest_s=' .machine power4
4485 gcc_GAS_CHECK_FEATURE([mfcr field support],
4486 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4488 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4489 [Define if your assembler supports mfcr field.])])
4492 *-*-aix*) conftest_s=' .machine "pwr5"
4495 *) conftest_s=' .machine power5
4500 gcc_GAS_CHECK_FEATURE([popcntb support],
4501 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4503 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4504 [Define if your assembler supports popcntb field.])])
4507 *-*-aix*) conftest_s=' .machine "pwr5x"
4510 *) conftest_s=' .machine power5
4515 gcc_GAS_CHECK_FEATURE([fp round support],
4516 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4518 [AC_DEFINE(HAVE_AS_FPRND, 1,
4519 [Define if your assembler supports fprnd.])])
4522 *-*-aix*) conftest_s=' .machine "pwr6"
4525 *) conftest_s=' .machine power6
4530 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4531 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4533 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4534 [Define if your assembler supports mffgpr and mftgpr.])])
4537 *-*-aix*) conftest_s=' .csect .text[[PR]]
4539 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4543 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4544 *) conftest_s=' .text
4546 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4549 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4550 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4552 [AC_DEFINE(HAVE_AS_REL16, 1,
4553 [Define if your assembler supports R_PPC_REL16 relocs.])])
4556 *-*-aix*) conftest_s=' .machine "pwr6"
4559 *) conftest_s=' .machine power6
4564 gcc_GAS_CHECK_FEATURE([compare bytes support],
4565 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4567 [AC_DEFINE(HAVE_AS_CMPB, 1,
4568 [Define if your assembler supports cmpb.])])
4571 *-*-aix*) conftest_s=' .machine "pwr6"
4574 *) conftest_s=' .machine power6
4579 gcc_GAS_CHECK_FEATURE([decimal float support],
4580 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4582 [AC_DEFINE(HAVE_AS_DFP, 1,
4583 [Define if your assembler supports DFP instructions.])])
4586 *-*-aix*) conftest_s=' .machine "pwr7"
4589 *) conftest_s=' .machine power7
4594 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4595 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4597 [AC_DEFINE(HAVE_AS_VSX, 1,
4598 [Define if your assembler supports VSX instructions.])])
4601 *-*-aix*) conftest_s=' .machine "pwr7"
4604 *) conftest_s=' .machine power7
4609 gcc_GAS_CHECK_FEATURE([popcntd support],
4610 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4612 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4613 [Define if your assembler supports POPCNTD instructions.])])
4616 *-*-aix*) conftest_s=' .machine "pwr8"
4617 .csect .text[[PR]]';;
4618 *) conftest_s=' .machine power8
4622 gcc_GAS_CHECK_FEATURE([power8 support],
4623 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4625 [AC_DEFINE(HAVE_AS_POWER8, 1,
4626 [Define if your assembler supports POWER8 instructions.])])
4629 *-*-aix*) conftest_s=' .machine "pwr9"
4630 .csect .text[[PR]]';;
4631 *) conftest_s=' .machine power9
4635 gcc_GAS_CHECK_FEATURE([power9 support],
4636 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4638 [AC_DEFINE(HAVE_AS_POWER9, 1,
4639 [Define if your assembler supports POWER9 instructions.])])
4642 *-*-aix*) conftest_s=' .csect .text[[PR]]
4644 *) conftest_s=' .text
4648 gcc_GAS_CHECK_FEATURE([lwsync support],
4649 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4651 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4652 [Define if your assembler supports LWSYNC instructions.])])
4655 *-*-aix*) conftest_s=' .machine "476"
4658 *) conftest_s=' .machine "476"
4663 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4664 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4666 [AC_DEFINE(HAVE_AS_DCI, 1,
4667 [Define if your assembler supports the DCI/ICI instructions.])])
4669 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4670 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4671 [.gnu_attribute 4,1],,
4672 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4673 [Define if your assembler supports .gnu_attribute.])])
4675 gcc_GAS_CHECK_FEATURE([tls marker support],
4676 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4677 [ bl __tls_get_addr(x@tlsgd)],,
4678 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4679 [Define if your assembler supports arg info for __tls_get_addr.])])
4681 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4682 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4683 [ .reloc .,R_PPC64_ENTRY; nop],,
4684 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4685 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4689 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4690 gcc_cv_as_aix_ref, [2,21,0],,
4691 [ .csect stuff[[rw]]
4697 [AC_DEFINE(HAVE_AS_REF, 1,
4698 [Define if your assembler supports .ref])])
4700 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4701 gcc_cv_as_aix_dwloc, [2,21,0],,
4706 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4707 [Define if your assembler supports AIX debug frame section label reference.])])
4713 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4714 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4715 [ lw $4,%gp_rel(foo)($4)],,
4716 [if test x$target_cpu_default = x
4717 then target_cpu_default=MASK_EXPLICIT_RELOCS
4718 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4721 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4722 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4723 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4724 [Define if the assembler understands -mno-shared.])])
4726 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4727 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4728 [.gnu_attribute 4,1],,
4729 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4730 [Define if your assembler supports .gnu_attribute.])])
4732 gcc_GAS_CHECK_FEATURE([.module support],
4733 gcc_cv_as_mips_dot_module,,[-32],
4736 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4737 [Define if your assembler supports .module.])])
4738 if test x$gcc_cv_as_mips_dot_module = xno \
4739 && test x$with_fp_32 != x; then
4741 [Requesting --with-fp-32= requires assembler support for .module.])
4744 gcc_GAS_CHECK_FEATURE([.micromips support],
4745 gcc_cv_as_micromips_support,,[--fatal-warnings],
4747 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4748 [Define if your assembler supports the .set micromips directive])])
4750 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4751 gcc_cv_as_mips_dtprelword, [2,18,0],,
4752 [.section .tdata,"awT",@progbits
4756 .dtprelword x+0x8000],,
4757 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4758 [Define if your assembler supports .dtprelword.])])
4760 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4761 gcc_cv_as_mips_dspr1_mult,,,
4771 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4772 [Define if your assembler supports DSPR1 mult.])])
4774 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4775 gcc_cv_as_ld_jalr_reloc=no
4776 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4777 if test $in_tree_ld = yes ; then
4778 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4779 && test $in_tree_ld_is_elf = yes; then
4780 gcc_cv_as_ld_jalr_reloc=yes
4782 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4783 echo ' .ent x' > conftest.s
4784 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4785 echo ' lw $25,%call16(y)($28)' >> conftest.s
4786 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4787 echo '1: jalr $25' >> conftest.s
4788 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4789 echo '1: jalr $25' >> conftest.s
4790 echo ' .end x' >> conftest.s
4791 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4792 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4793 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4794 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4795 gcc_cv_as_ld_jalr_reloc=yes
4801 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4802 if test x$target_cpu_default = x; then
4803 target_cpu_default=MASK_RELAX_PIC_CALLS
4805 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4808 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4810 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4811 [gcc_cv_ld_mips_personality_relaxation],
4812 [gcc_cv_ld_mips_personality_relaxation=no
4813 if test $in_tree_ld = yes ; then
4814 if test "$gcc_cv_gld_major_version" -eq 2 \
4815 -a "$gcc_cv_gld_minor_version" -ge 21 \
4816 -o "$gcc_cv_gld_major_version" -gt 2; then
4817 gcc_cv_ld_mips_personality_relaxation=yes
4819 elif test x$gcc_cv_as != x \
4820 -a x$gcc_cv_ld != x \
4821 -a x$gcc_cv_readelf != x ; then
4822 cat > conftest.s <<EOF
4824 .cfi_personality 0x80,indirect_ptr
4831 .section .data,"aw",@progbits
4835 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4836 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4837 if $gcc_cv_readelf -d conftest 2>&1 \
4838 | grep TEXTREL > /dev/null 2>&1; then
4840 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4841 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4844 gcc_cv_ld_mips_personality_relaxation=yes
4848 rm -f conftest.s conftest.o conftest])
4849 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4850 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4851 [Define if your linker can relax absolute .eh_frame personality
4852 pointers into PC-relative form.])
4855 gcc_GAS_CHECK_FEATURE([-mnan= support],
4856 gcc_cv_as_mips_nan,,
4858 [AC_DEFINE(HAVE_AS_NAN, 1,
4859 [Define if the assembler understands -mnan=.])])
4860 if test x$gcc_cv_as_mips_nan = xno \
4861 && test x$with_nan != x; then
4863 [Requesting --with-nan= requires assembler support for -mnan=])
4867 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4868 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4869 [.gnu_attribute 8,1],,
4870 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4871 [Define if your assembler supports .gnu_attribute.])])
4872 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4873 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4878 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4879 [Define if your assembler supports .machine and .machinemode.])])
4880 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4881 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4882 [ .machine z13+vx ],,
4883 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4884 [Define if your assembler supports architecture modifiers.])])
4888 # Mips and HP-UX need the GNU assembler.
4889 # Linux on IA64 might be able to use the Intel assembler.
4892 mips*-*-* | *-*-hpux* )
4893 if test x$gas_flag = xyes \
4894 || test x"$host" != x"$build" \
4895 || test ! -x "$gcc_cv_as" \
4896 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4899 echo "*** This configuration requires the GNU assembler" >&2
4905 # ??? Not all targets support dwarf2 debug_line, even within a version
4906 # of gas. Moreover, we need to emit a valid instruction to trigger any
4907 # info to the output file. So, as supported targets are added to gas 2.11,
4908 # add some instruction here to (also) show we expect this might work.
4909 # ??? Once 2.11 is released, probably need to add first known working
4910 # version to the per-target configury.
4912 aarch64 | alpha | arc | arm | avr | bfin | cris | i386 | m32c | m68k \
4913 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4914 | tilegx | tilepro | visium | xstormy16 | xtensa)
4924 if test x"$insn" != x; then
4926 .file 1 \"conftest.s\"
4929 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4930 gcc_cv_as_dwarf2_debug_line,
4931 [elf,2,11,0],, [$conftest_s],
4932 [if test x$gcc_cv_objdump != x \
4933 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4934 | grep debug_line > /dev/null 2>&1; then
4935 gcc_cv_as_dwarf2_debug_line=yes
4938 # The .debug_line file table must be in the exact order that
4939 # we specified the files, since these indices are also used
4940 # by DW_AT_decl_file. Approximate this test by testing if
4941 # the assembler bitches if the same index is assigned twice.
4942 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4943 gcc_cv_as_dwarf2_file_buggy,,,
4947 if test $gcc_cv_as_dwarf2_debug_line = yes \
4948 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4949 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4950 [Define if your assembler supports dwarf2 .file/.loc directives,
4951 and preserves file table indices exactly as given.])
4953 if test $gcc_cv_as_leb128 = yes; then
4955 .file 1 \"conftest.s\"
4956 .loc 1 3 0 view .LVU1
4962 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4963 gcc_cv_as_dwarf2_debug_view,
4964 [elf,2,27,0],,[$conftest_s],,
4965 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4966 [Define if your assembler supports views in dwarf2 .loc directives.])])
4970 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4971 gcc_cv_as_gdwarf2_flag,
4972 [elf,2,11,0], [--gdwarf2], [$insn],,
4973 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4974 [Define if your assembler supports the --gdwarf2 option.])])
4976 gcc_GAS_CHECK_FEATURE([--gstabs option],
4977 gcc_cv_as_gstabs_flag,
4978 [elf,2,11,0], [--gstabs], [$insn],,
4979 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4980 [Define if your assembler supports the --gstabs option.])])
4982 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4983 gcc_cv_as_debug_prefix_map_flag,
4984 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4985 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4986 [Define if your assembler supports the --debug-prefix-map option.])])
4989 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4990 gcc_cv_as_compress_debug,,,,
4991 [# gas compiled without zlib cannot compress debug sections and warns
4992 # about it, but still exits successfully. So check for this, too.
4993 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4995 gcc_cv_as_compress_debug=0
4996 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4997 # defaulting to the ELF gABI format.
4998 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5000 gcc_cv_as_compress_debug=2
5001 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5002 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5003 # Before binutils 2.26, gas only supported --compress-debug-options and
5004 # emitted the traditional GNU format.
5005 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5007 gcc_cv_as_compress_debug=1
5008 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5009 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5011 gcc_cv_as_compress_debug=0
5013 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5014 [Define to the level of your assembler's compressed debug section support.])
5015 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5016 [Define to the assembler option to enable compressed debug sections.])
5017 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5018 [Define to the assembler option to disable compressed debug sections.])
5020 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5023 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5024 [Define if your assembler supports .lcomm with an alignment field.])])
5026 if test x$with_sysroot = x && test x$host = x$target \
5027 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5028 && test "$prefix" != "NONE"; then
5029 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5030 [Define to PREFIX/include if cpp should also search that directory.])
5033 # Determine the version of glibc, if any, used on the target.
5034 AC_MSG_CHECKING([for target glibc version])
5035 AC_ARG_WITH([glibc-version],
5036 [AS_HELP_STRING([--with-glibc-version=M.N],
5037 [assume GCC used with glibc version M.N or later])], [
5038 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5039 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5040 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5042 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5044 glibc_version_major=0
5045 glibc_version_minor=0
5046 [if test -f $target_header_dir/features.h \
5047 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5048 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5049 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5050 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5052 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5053 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5054 [GNU C Library major version number used on the target, or 0.])
5055 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5056 [GNU C Library minor version number used on the target, or 0.])
5058 AC_ARG_ENABLE(gnu-unique-object,
5059 [AS_HELP_STRING([--enable-gnu-unique-object],
5060 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5061 [case $enable_gnu_unique_object in
5063 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5064 Valid choices are 'yes' and 'no'.]) ;;
5066 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5068 [.type foo, '$target_type_format_char'gnu_unique_object],,
5069 # We need to unquote above to to use the definition from config.gcc.
5070 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5071 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5073 if test x$enable_gnu_unique_object = xyes; then
5074 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5075 [Define if your assembler supports @gnu_unique_object.])
5078 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5079 [gcc_cv_as_line_zero],
5080 [gcc_cv_as_line_zero=no
5081 if test $in_tree_gas = yes; then
5082 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5083 elif test "x$gcc_cv_as" != x; then
5084 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5085 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5086 test "x`cat conftest.out`" = x
5088 gcc_cv_as_line_zero=yes
5090 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5091 cat conftest.s >&AS_MESSAGE_LOG_FD
5092 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5093 cat conftest.out >&AS_MESSAGE_LOG_FD
5095 rm -f conftest.o conftest.s conftest.out
5097 if test "x$gcc_cv_as_line_zero" = xyes; then
5098 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5099 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5102 AC_MSG_CHECKING(support for thin archives)
5103 thin_archive_support=no
5104 echo 'int main (void) { return 0; }' > conftest.c
5105 if ($AR --version | sed 1q | grep "GNU ar" \
5106 && $CC $CFLAGS -c conftest.c \
5107 && $AR rcT conftest.a conftest.o \
5108 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5109 thin_archive_support=yes
5111 rm -f conftest.c conftest.o conftest.a conftest
5112 AC_MSG_RESULT($thin_archive_support)
5113 AC_SUBST(thin_archive_support)
5115 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5116 gcc_cv_ld_eh_frame_hdr=no
5117 if test $in_tree_ld = yes ; then
5118 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5119 && test $in_tree_ld_is_elf = yes; then
5120 gcc_cv_ld_eh_frame_hdr=yes
5122 elif test x$gcc_cv_ld != x; then
5123 if echo "$ld_ver" | grep GNU > /dev/null; then
5124 # Check if linker supports --eh-frame-hdr option
5125 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5126 gcc_cv_ld_eh_frame_hdr=yes
5131 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5132 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5133 gcc_cv_ld_eh_frame_hdr=yes
5139 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5140 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5141 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5142 [Define if your linker supports .eh_frame_hdr.])
5144 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5146 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5147 gcc_cv_ld_eh_frame_ciev3=no
5148 if test $in_tree_ld = yes ; then
5149 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5150 && test $in_tree_ld_is_elf = yes; then
5151 gcc_cv_ld_eh_frame_ciev3=yes
5153 elif test x$gcc_cv_ld != x; then
5154 if echo "$ld_ver" | grep GNU > /dev/null; then
5155 gcc_cv_ld_eh_frame_ciev3=yes
5156 if test 0"$ld_date" -lt 20040513; then
5157 if test -n "$ld_date"; then
5158 # If there was date string, but was earlier than 2004-05-13, fail
5159 gcc_cv_ld_eh_frame_ciev3=no
5160 elif test "$ld_vers_major" -lt 2; then
5161 gcc_cv_ld_eh_frame_ciev3=no
5162 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5163 gcc_cv_ld_eh_frame_ciev3=no
5169 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5170 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5171 gcc_cv_ld_eh_frame_ciev3=yes
5177 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5178 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5179 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5180 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5182 AC_MSG_CHECKING(linker position independent executable support)
5184 if test $in_tree_ld = yes ; then
5186 # Full PIE support on Solaris was only introduced in gld 2.26.
5187 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5188 *) gcc_gld_pie_min_version=15 ;;
5190 if test "$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 \
5191 && test $in_tree_ld_is_elf = yes; then
5194 elif test x$gcc_cv_ld != x; then
5195 # Check if linker supports -pie option
5196 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5200 if echo "$ld_ver" | grep GNU > /dev/null \
5201 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5208 *-*-solaris2.1[[1-9]]*)
5209 # Solaris 11.3 added PIE support.
5210 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5217 if test x"$gcc_cv_ld_pie" = xyes; then
5218 AC_DEFINE(HAVE_LD_PIE, 1,
5219 [Define if your linker supports PIE option.])
5221 AC_MSG_RESULT($gcc_cv_ld_pie)
5223 AC_MSG_CHECKING(linker PIE support with copy reloc)
5224 gcc_cv_ld_pie_copyreloc=no
5225 if test $gcc_cv_ld_pie = yes ; then
5226 if test $in_tree_ld = yes ; then
5227 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5228 gcc_cv_ld_pie_copyreloc=yes
5230 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5231 # Check if linker supports -pie option with copy reloc
5233 i?86-*-linux* | x86_64-*-linux*)
5234 cat > conftest1.s <<EOF
5237 .type a_glob, @object
5242 cat > conftest2.s <<EOF
5245 .type main, @function
5247 movl %eax, a_glob(%rip)
5250 .section .data.rel,"aw",@progbits
5255 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5256 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5257 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5258 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5259 gcc_cv_ld_pie_copyreloc=yes
5261 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5266 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5267 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5268 [Define 0/1 if your linker supports -pie option with copy reloc.])
5269 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5271 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5272 gcc_cv_ld_eh_gc_sections=no
5273 if test $in_tree_ld = yes ; then
5274 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5275 && test $in_tree_ld_is_elf = yes; then
5276 gcc_cv_ld_eh_gc_sections=yes
5278 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5279 cat > conftest.s <<EOF
5282 .type _start, @function
5285 .size _start, .-_start
5286 .section .text.foo,"ax",@progbits
5287 .type foo, @function
5291 .section .gcc_except_table.foo,"a",@progbits
5294 .section .eh_frame,"a",@progbits
5297 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5298 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5299 | grep "gc-sections option ignored" > /dev/null; then
5300 gcc_cv_ld_eh_gc_sections=no
5301 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5302 | grep gcc_except_table > /dev/null; then
5303 gcc_cv_ld_eh_gc_sections=yes
5304 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5305 if test x$gcc_cv_as_comdat_group != xyes; then
5306 gcc_cv_ld_eh_gc_sections=no
5307 cat > conftest.s <<EOF
5310 .type _start, @function
5313 .size _start, .-_start
5314 .section .gnu.linkonce.t.foo,"ax",@progbits
5315 .type foo, @function
5319 .section .gcc_except_table.foo,"a",@progbits
5322 .section .eh_frame,"a",@progbits
5325 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5326 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5327 | grep "gc-sections option ignored" > /dev/null; then
5328 gcc_cv_ld_eh_gc_sections=no
5329 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5330 | grep gcc_except_table > /dev/null; then
5331 gcc_cv_ld_eh_gc_sections=yes
5337 rm -f conftest.s conftest.o conftest
5341 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5342 gcc_cv_ld_eh_gc_sections=no
5345 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5346 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5347 [Define if your linker supports garbage collection of
5348 sections in presence of EH frames.])
5350 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5352 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5353 gcc_cv_ld_eh_gc_sections_bug=no
5354 if test $in_tree_ld = yes ; then
5355 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5356 && test $in_tree_ld_is_elf = yes; then
5357 gcc_cv_ld_eh_gc_sections_bug=yes
5359 elif test x$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
5360 gcc_cv_ld_eh_gc_sections_bug=yes
5361 cat > conftest.s <<EOF
5364 .type _start, @function
5367 .size _start, .-_start
5368 .section .text.startup.foo,"ax",@progbits
5369 .type foo, @function
5373 .section .gcc_except_table.foo,"a",@progbits
5376 .section .eh_frame,"a",@progbits
5379 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5380 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5381 | grep "gc-sections option ignored" > /dev/null; then
5383 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5384 | grep gcc_except_table > /dev/null; then
5385 gcc_cv_ld_eh_gc_sections_bug=no
5388 rm -f conftest.s conftest.o conftest
5390 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5391 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5392 [Define if your linker has buggy garbage collection of
5393 sections support when .text.startup.foo like sections are used.])
5395 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5397 AC_MSG_CHECKING(linker for compressed debug sections)
5398 # gold/gld support compressed debug sections since binutils 2.19/2.21
5399 # In binutils 2.26, gld gained support for the ELF gABI format.
5400 if test $in_tree_ld = yes ; then
5401 gcc_cv_ld_compress_debug=0
5402 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5403 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5404 gcc_cv_ld_compress_debug=2
5405 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5406 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5407 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5408 gcc_cv_ld_compress_debug=3
5409 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5410 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5411 && test $in_tree_ld_is_elf = yes; then
5412 gcc_cv_ld_compress_debug=1
5414 elif echo "$ld_ver" | grep GNU > /dev/null; then
5415 if test "$ld_vers_major" -lt 2 \
5416 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5417 gcc_cv_ld_compress_debug=0
5418 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5419 gcc_cv_ld_compress_debug=1
5421 gcc_cv_ld_compress_debug=3
5422 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5424 if test $ld_is_gold = yes; then
5425 gcc_cv_ld_compress_debug=2
5426 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5432 # Introduced in Solaris 11.2.
5433 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5434 gcc_cv_ld_compress_debug=3
5435 gcc_cv_ld_compress_debug_option="-z compress-sections"
5437 gcc_cv_ld_compress_debug=0
5441 # Assume linkers other than GNU ld don't support compessed debug
5443 gcc_cv_ld_compress_debug=0
5448 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5449 [Define to the level of your linker's compressed debug section support.])
5450 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5451 [Define to the linker option to enable compressed debug sections.])
5452 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5454 if test x"$ld64_flag" = x"yes"; then
5456 # Set defaults for possibly untestable items.
5457 gcc_cv_ld64_export_dynamic=0
5459 if test "$build" = "$host"; then
5465 # On Darwin, because of FAT library support, it is often possible to execute
5466 # exes from compatible archs even when the host differs from the build system.
5467 case "$build","$host" in
5468 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5473 # If the configurer specified a minimum ld64 version to be supported, then use
5474 # that to determine feature support.
5475 if test x"${gcc_cv_ld64_version}" != x; then
5476 AC_MSG_CHECKING(ld64 specified version)
5477 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5478 AC_MSG_RESULT($gcc_cv_ld64_major)
5479 if test "$gcc_cv_ld64_major" -ge 236; then
5480 gcc_cv_ld64_export_dynamic=1
5482 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5483 # If the version was not specified, try to find it.
5484 AC_MSG_CHECKING(linker version)
5485 if test x"${gcc_cv_ld64_version}" = x; then
5486 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5488 AC_MSG_RESULT($gcc_cv_ld64_version)
5490 AC_MSG_CHECKING(linker for -export_dynamic support)
5491 gcc_cv_ld64_export_dynamic=1
5492 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5493 gcc_cv_ld64_export_dynamic=0
5495 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5498 if test x"${gcc_cv_ld64_version}" != x; then
5499 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5500 [Define to ld64 version.])
5503 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5504 [Define to 1 if ld64 supports '-export_dynamic'.])
5511 AC_CACHE_CHECK(linker --as-needed support,
5512 gcc_cv_ld_as_needed,
5513 [gcc_cv_ld_as_needed=no
5514 gcc_cv_ld_as_needed_option='--as-needed'
5515 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5516 if test $in_tree_ld = yes ; then
5517 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5518 && test $in_tree_ld_is_elf = yes; then
5519 gcc_cv_ld_as_needed=yes
5521 elif test x$gcc_cv_ld != x; then
5522 # Check if linker supports --as-needed and --no-as-needed options
5523 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5524 gcc_cv_ld_as_needed=yes
5526 case "$target:$gnu_ld" in
5528 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5530 gcc_cv_ld_as_needed=yes
5531 gcc_cv_ld_as_needed_option="-z ignore"
5532 gcc_cv_ld_no_as_needed_option="-z record"
5536 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5537 # dl_iterate_phdr, i.e. since Solaris 11.
5539 *-*-solaris2.1[[1-9]]*)
5541 i?86-*-* | x86_64-*-*)
5542 if echo "$ld_ver" | grep GNU > /dev/null; then
5543 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5544 gcc_cv_ld_as_needed=no
5550 gcc_cv_ld_as_needed=no
5554 if test x"$gcc_cv_ld_as_needed" = xyes; then
5555 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5556 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5557 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5558 [Define to the linker option to ignore unused dependencies.])
5559 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5560 [Define to the linker option to keep unused dependencies.])
5563 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5564 saved_LDFLAGS="$LDFLAGS"
5565 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5566 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5567 AC_LINK_IFELSE([int main(void) {return 0;}],
5568 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5570 LDFLAGS="$saved_LDFLAGS"
5571 if test "x$gcc_cv_ld_clearcap" = xyes; then
5572 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5573 [Define if the linker supports clearing hardware capabilities via mapfile.])
5574 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5576 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5582 emul_name="-melf32lppc"
5585 emul_name="-melf32ppc"
5588 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5590 [gcc_cv_ld_ppc_attr=no
5591 if test x"$ld_is_gold" = xyes; then
5592 gcc_cv_ld_ppc_attr=yes
5593 elif test $in_tree_ld = yes ; then
5594 if test "$gcc_cv_gld_major_version" -eq 2 \
5595 -a "$gcc_cv_gld_minor_version" -ge 28 \
5596 -o "$gcc_cv_gld_major_version" -gt 2; then
5597 gcc_cv_ld_ppc_attr=yes
5599 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5600 # check that merging the long double .gnu_attribute doesn't warn
5601 cat > conftest1.s <<EOF
5604 cat > conftest2.s <<EOF
5607 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5608 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5609 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5610 && test ! -s conftest.err; then
5611 gcc_cv_ld_ppc_attr=yes
5613 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5616 if test x$gcc_cv_ld_ppc_attr = xyes; then
5617 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5618 [Define if your PowerPC linker has .gnu.attributes long double support.])
5623 case "$target:$tm_file" in
5624 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5627 emul_name="-melf64lppc"
5630 emul_name="-melf64ppc"
5633 emul_name="-melf64ppc_fbsd"
5636 AC_CACHE_CHECK(linker support for omitting dot symbols,
5637 gcc_cv_ld_no_dot_syms,
5638 [gcc_cv_ld_no_dot_syms=no
5639 if test x"$ld_is_gold" = xyes; then
5640 gcc_cv_ld_no_dot_syms=yes
5641 elif test $in_tree_ld = yes ; then
5642 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5643 gcc_cv_ld_no_dot_syms=yes
5645 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5646 cat > conftest1.s <<EOF
5650 cat > conftest2.s <<EOF
5651 .section ".opd","aw"
5656 .quad .LEfoo,.TOC.@tocbase,0
5662 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5663 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5664 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5665 gcc_cv_ld_no_dot_syms=yes
5667 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5670 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5671 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5672 [Define if your PowerPC64 linker only needs function descriptor syms.])
5675 AC_CACHE_CHECK(linker large toc support,
5676 gcc_cv_ld_large_toc,
5677 [gcc_cv_ld_large_toc=no
5678 if test x"$ld_is_gold" = xyes; then
5679 gcc_cv_ld_large_toc=yes
5680 elif test $in_tree_ld = yes ; then
5681 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5682 gcc_cv_ld_large_toc=yes
5684 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5685 cat > conftest.s <<EOF
5686 .section ".tbss","awT",@nobits
5692 addis 9,13,ie0@got@tprel@ha
5693 ld 9,ie0@got@tprel@l(9)
5695 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5696 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5697 gcc_cv_ld_large_toc=yes
5699 rm -f conftest conftest.o conftest.s
5702 if test x"$gcc_cv_ld_large_toc" = xyes; then
5703 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5704 [Define if your PowerPC64 linker supports a large TOC.])
5707 AC_CACHE_CHECK(linker toc pointer alignment,
5708 gcc_cv_ld_toc_align,
5709 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5710 cat > conftest.s <<EOF
5715 .section .data.rel.ro,"aw",@progbits
5720 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5721 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5722 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5724 rm -f conftest conftest.o conftest.s
5727 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5728 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5729 [Define to .TOC. alignment forced by your linker.])
5736 AC_CACHE_CHECK(linker large toc support,
5737 gcc_cv_ld_large_toc,
5738 [gcc_cv_ld_large_toc=no
5739 if test x$gcc_cv_as != x ; then
5740 cat > conftest.s <<EOF
5750 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5751 gcc_cv_ld_large_toc=yes
5753 rm -f conftest conftest.o conftest.s
5756 if test x"$gcc_cv_ld_large_toc" = xyes; then
5757 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5758 [Define if your PowerPC64 linker supports a large TOC.])
5763 AC_CACHE_CHECK(linker --build-id support,
5765 [gcc_cv_ld_buildid=no
5766 if test $in_tree_ld = yes ; then
5767 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5768 "$gcc_cv_gld_minor_version" -ge 18 -o \
5769 "$gcc_cv_gld_major_version" -gt 2 \
5770 && test $in_tree_ld_is_elf = yes; then
5771 gcc_cv_ld_buildid=yes
5773 elif test x$gcc_cv_ld != x; then
5774 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5775 gcc_cv_ld_buildid=yes
5778 if test x"$gcc_cv_ld_buildid" = xyes; then
5779 AC_DEFINE(HAVE_LD_BUILDID, 1,
5780 [Define if your linker supports --build-id.])
5783 AC_ARG_ENABLE(linker-build-id,
5784 [AS_HELP_STRING([--enable-linker-build-id],
5785 [compiler will always pass --build-id to linker])],
5787 enable_linker_build_id=no)
5789 if test x"$enable_linker_build_id" = xyes; then
5790 if test x"$gcc_cv_ld_buildid" = xyes; then
5791 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5792 [Define if gcc should always pass --build-id to linker.])
5794 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5798 # In binutils 2.21, GNU ld gained support for new emulations fully
5799 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5800 AC_CACHE_CHECK(linker *_sol2 emulation support,
5801 gcc_cv_ld_sol2_emulation,
5802 [gcc_cv_ld_sol2_emulation=no
5803 if test $in_tree_ld = yes ; then
5804 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5805 "$gcc_cv_gld_minor_version" -ge 21 -o \
5806 "$gcc_cv_gld_major_version" -gt 2 \
5807 && test $in_tree_ld_is_elf = yes; then
5808 gcc_cv_ld_sol2_emulation=yes
5810 elif test x$gcc_cv_ld != x; then
5811 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5812 grep _sol2 > /dev/null; then
5813 gcc_cv_ld_sol2_emulation=yes
5816 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5817 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5818 [Define if your linker supports the *_sol2 emulations.])
5821 AC_CACHE_CHECK(linker --sysroot support,
5823 [gcc_cv_ld_sysroot=no
5824 if test $in_tree_ld = yes ; then
5825 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5826 gcc_cv_ld_sysroot=yes
5828 elif test x$gcc_cv_ld != x; then
5829 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5830 gcc_cv_ld_sysroot=yes
5833 if test x"$gcc_cv_ld_sysroot" = xyes; then
5834 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5835 [Define if your linker supports --sysroot.])
5840 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5841 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5842 gcc_cv_solaris_crts,
5843 [gcc_cv_solaris_crts=no
5844 if test x$host != x$target; then
5845 if test "x$with_sysroot" = xyes; then
5846 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5848 target_sysroot="${with_sysroot}"
5851 target_libdir="$target_sysroot/usr/lib"
5852 # At the time they were added, gcrt1.o became a symlink for backwards
5853 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5855 i?86-*-solaris2* | x86_64-*-solaris2*)
5856 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5859 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5864 if test x$gcc_cv_solaris_crts = xyes; then
5865 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5866 [Define if the system-provided CRTs are present on Solaris.])
5869 AC_ARG_ENABLE(libssp,
5870 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5871 [case "${enableval}" in
5875 AC_MSG_ERROR([unknown libssp setting $enableval])
5879 # Test for stack protector support in target C library.
5880 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5881 gcc_cv_libc_provides_ssp,
5882 [gcc_cv_libc_provides_ssp=no
5883 if test "x$enable_libssp" = "xno"; then
5884 gcc_cv_libc_provides_ssp=yes
5885 elif test "x$enable_libssp" = "xyes"; then
5886 gcc_cv_libc_provides_ssp=no
5890 # All versions of musl provide stack protector
5891 gcc_cv_libc_provides_ssp=yes;;
5892 *-*-linux* | *-*-kfreebsd*-gnu)
5893 # glibc 2.4 and later provides __stack_chk_fail and
5894 # either __stack_chk_guard, or TLS access to stack guard canary.
5895 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5896 [if test -f $target_header_dir/features.h \
5897 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5898 $target_header_dir/features.h > /dev/null; then
5899 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5900 $target_header_dir/features.h > /dev/null && \
5901 test -f $target_header_dir/bits/uClibc_config.h && \
5902 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5903 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5904 gcc_cv_libc_provides_ssp=yes
5906 # all versions of Bionic support stack protector
5907 elif test -f $target_header_dir/sys/cdefs.h \
5908 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5909 $target_header_dir/sys/cdefs.h > /dev/null; then
5910 gcc_cv_libc_provides_ssp=yes
5914 # Avoid complicated tests (see
5915 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5916 # simply assert that glibc does provide this, which is true for all
5917 # realistically usable GNU/Hurd configurations.
5918 # All supported versions of musl provide it as well
5919 gcc_cv_libc_provides_ssp=yes;;
5920 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5921 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5922 [echo "no __stack_chk_fail on this target"])
5924 *) gcc_cv_libc_provides_ssp=no ;;
5928 if test x$gcc_cv_libc_provides_ssp = xyes; then
5929 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5930 [Define if your target C library provides stack protector support])
5933 # Check whether --enable-default-ssp was given.
5934 AC_ARG_ENABLE(default-ssp,
5935 [AS_HELP_STRING([--enable-default-ssp],
5936 [enable Stack Smashing Protection as default])],[
5937 if test x$gcc_cv_libc_provides_ssp = xyes; then
5939 ia64*-*-*) enable_default_ssp=no ;;
5940 *) enable_default_ssp=$enableval ;;
5943 enable_default_ssp=no
5945 enable_default_ssp=no)
5946 if test x$enable_default_ssp = xyes ; then
5947 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5948 [Define if your target supports default stack protector and it is enabled.])
5950 AC_SUBST([enable_default_ssp])
5952 # Test for <sys/sdt.h> on the target.
5953 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5954 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5956 if test -f $target_header_dir/sys/sdt.h; then
5958 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5959 [Define if your target C library provides sys/sdt.h])
5961 AC_MSG_RESULT($have_sys_sdt_h)
5963 # Check if TFmode long double should be used by default or not.
5964 # Some glibc targets used DFmode long double, but with glibc 2.4
5965 # and later they can use TFmode.
5967 powerpc*-*-linux* | \
5971 AC_ARG_WITH(long-double-128,
5972 [AS_HELP_STRING([--with-long-double-128],
5973 [use 128-bit long double by default])],
5974 gcc_cv_target_ldbl128="$with_long_double_128",
5975 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5976 [gcc_cv_target_ldbl128=no
5977 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5978 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5979 && gcc_cv_target_ldbl128=yes
5983 if test x$gcc_cv_target_ldbl128 = xyes; then
5984 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5985 [Define if TFmode long double should be the default])
5988 # Check if TFmode long double target should use the IBM extended double or IEEE
5989 # 128-bit floating point formats if long doubles are 128-bits long. The long
5990 # double type can only be switched on powerpc64 bit Linux systems where VSX is
5991 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
5993 AC_ARG_WITH([long-double-format],
5994 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
5995 [Specify whether PowerPC long double uses IEEE or IBM format])],[
5996 case "$target:$with_long_double_format" in
5997 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6000 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6001 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6003 power7 | power8 | power9 | power1*)
6007 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6008 supported if the default cpu is power7 or newer])
6009 with_long_double_format=""
6013 xpowerpc64*-*-linux*:*)
6014 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6015 with_long_double_format=""
6018 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6019 on 64-bit PowerPC VSX Linux systems])
6020 with_long_double_format=""
6025 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6026 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6027 gcc_cv_libc_provides_hwcap_in_tcb=no
6030 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6033 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6034 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6035 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6038 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6039 gcc_cv_target_dl_iterate_phdr=unknown
6041 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6042 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6043 # libdl there, both complicating its use and breaking compatibility
6044 # between Solaris 10 updates.
6045 *-*-solaris2.1[[1-9]]*)
6046 # <link.h> needs both a dl_iterate_phdr declaration and support for
6047 # compilation with largefile support.
6048 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6049 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6050 gcc_cv_target_dl_iterate_phdr=yes
6052 gcc_cv_target_dl_iterate_phdr=no
6055 *-*-dragonfly* | *-*-freebsd*)
6056 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6057 gcc_cv_target_dl_iterate_phdr=yes
6059 gcc_cv_target_dl_iterate_phdr=no
6063 gcc_cv_target_dl_iterate_phdr=yes
6066 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6067 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6068 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6069 [Define if your target C library provides the `dl_iterate_phdr' function.])
6071 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6073 # We no longer support different GC mechanisms. Emit an error if
6074 # the user configures with --with-gc.
6076 [AS_HELP_STRING([--with-gc={page,zone}],
6077 [this option is not supported anymore. It used to choose
6078 the garbage collection mechanism to use with the compiler])],
6079 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6082 # Libraries to use on the host. This will normally be set by the top
6083 # level Makefile. Here we simply capture the value for our Makefile.
6084 if test -z "${HOST_LIBS+set}"; then
6089 # Use the system's zlib library.
6092 dnl Very limited version of automake's enable-maintainer-mode
6094 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6095 dnl maintainer-mode is disabled by default
6096 AC_ARG_ENABLE(maintainer-mode,
6097 [AS_HELP_STRING([--enable-maintainer-mode],
6098 [enable make rules and dependencies not useful
6099 (and sometimes confusing) to the casual installer])],
6100 maintainer_mode=$enableval,
6103 AC_MSG_RESULT($maintainer_mode)
6105 if test "$maintainer_mode" = "yes"; then
6112 dnl Whether to prevent multiple front-ends from linking at the same time
6114 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6115 AC_ARG_ENABLE(link-mutex,
6116 [AS_HELP_STRING([--enable-link-mutex],
6117 [avoid linking multiple front-ends at once to avoid thrashing
6118 on the build machine])],
6119 do_link_mutex=$enableval,
6121 AC_MSG_RESULT($do_link_mutex)
6123 if test "$do_link_mutex" = "yes"; then
6128 AC_SUBST(DO_LINK_MUTEX)
6134 # Make empty files to contain the specs and options for each language.
6135 # Then add #include lines to for a compiler that has specs and/or options.
6141 # These (without "all_") are set in each config-lang.in.
6142 # `language' must be a single word so is spelled singularly.
6145 all_outputs='Makefile'
6146 # List of language makefile fragments.
6148 # Additional files for gengtype
6149 all_gtfiles="$target_gtfiles"
6151 # These are the languages that are set in --enable-languages,
6152 # and are available in the GCC tree.
6153 all_selected_languages=
6155 # Add the language fragments.
6156 # Languages are added via two mechanisms. Some information must be
6157 # recorded in makefile variables, these are defined in config-lang.in.
6158 # We accumulate them and plug them into the main Makefile.
6159 # The other mechanism is a set of hooks for each of the main targets
6160 # like `clean', `install', etc.
6162 language_hooks="Make-hooks"
6164 for lang in ${srcdir}/*/config-lang.in
6167 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6169 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6170 if test "x$lang_alias" = x
6172 echo "$lang doesn't set \$language." 1>&2
6175 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6176 subdirs="$subdirs $subdir"
6178 # $gcc_subdir is where the gcc integration files are to be found
6179 # for a language, both for internal compiler purposes (compiler
6180 # sources implementing front-end to GCC tree converters), and for
6181 # build infrastructure purposes (Make-lang.in, etc.)
6183 # This will be <subdir> (relative to $srcdir) if a line like
6184 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6185 # is found in <langdir>/config-lang.in, and will remain <langdir>
6188 # Except for the language alias (fetched above), the regular
6189 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6190 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6191 # only this and the language alias.
6193 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6194 if [ "$gcc_subdir" = "" ]; then
6195 gcc_subdir="$subdir"
6198 case ",$enable_languages," in
6200 all_selected_languages="$all_selected_languages $lang_alias"
6201 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6202 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6214 . ${srcdir}/$gcc_subdir/config-lang.in
6215 if test "x$language" = x
6217 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6222 case ",$enable_languages," in
6225 for i in $subdir_requires; do
6226 test -f "${srcdir}/$i/config-lang.in" && continue
6234 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6235 if test -f $srcdir/$gcc_subdir/lang.opt; then
6236 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6237 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6239 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6240 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6242 all_languages="$all_languages $language"
6243 all_compilers="$all_compilers $compilers"
6244 all_outputs="$all_outputs $outputs"
6245 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6246 case ",$enable_languages," in
6248 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6250 AC_SUBST(enable_lto)
6257 for language in $all_selected_languages
6259 check_languages="$check_languages check-$language"
6262 # We link each language in with a set of hooks, reached indirectly via
6263 # lang.${target}. Only do so for selected languages.
6267 target_list="all.cross start.encap rest.encap tags \
6268 install-common install-man install-info install-pdf install-html dvi \
6269 pdf html uninstall info man srcextra srcman srcinfo \
6270 mostlyclean clean distclean maintainer-clean install-plugin"
6272 for t in $target_list
6275 for lang in $all_selected_languages
6279 echo "lang.$t: $x" >> Make-hooks
6283 # Option include files
6286 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6287 option_includes="option-includes.mk"
6288 AC_SUBST_FILE(option_includes)
6296 echo "dir ." > .gdbinit
6297 echo "dir ${srcdir}" >> .gdbinit
6298 if test x$gdb_needs_out_file_path = xyes
6300 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6302 if test "x$subdirs" != x; then
6305 echo "dir ${srcdir}/$s" >> .gdbinit
6308 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6309 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6311 # Put a breakpoint on __asan_report_error to help with debugging buffer
6314 *-fsanitize=address*)
6315 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6319 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6320 AC_SUBST(gcc_tooldir)
6323 # Find a directory in which to install a shared libgcc.
6325 AC_ARG_ENABLE(version-specific-runtime-libs,
6326 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6327 [specify that runtime libraries should be
6328 installed in a compiler-specific directory])])
6330 # Substitute configuration variables
6333 AC_SUBST(all_compilers)
6334 AC_SUBST(all_gtfiles)
6335 AC_SUBST(all_lang_makefrags)
6336 AC_SUBST(all_languages)
6337 AC_SUBST(all_selected_languages)
6338 AC_SUBST(build_exeext)
6339 AC_SUBST(build_install_headers_dir)
6340 AC_SUBST(build_xm_file_list)
6341 AC_SUBST(build_xm_include_list)
6342 AC_SUBST(build_xm_defines)
6343 AC_SUBST(build_file_translate)
6344 AC_SUBST(check_languages)
6345 AC_SUBST(cpp_install_dir)
6346 AC_SUBST(xmake_file)
6347 AC_SUBST(tmake_file)
6348 AC_SUBST(TM_ENDIAN_CONFIG)
6349 AC_SUBST(TM_MULTILIB_CONFIG)
6350 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6351 AC_SUBST(extra_gcc_objs)
6352 AC_SUBST(user_headers_inc_next_pre)
6353 AC_SUBST(user_headers_inc_next_post)
6354 AC_SUBST(extra_headers_list)
6355 AC_SUBST(extra_objs)
6356 AC_SUBST(extra_programs)
6357 AC_SUBST(float_h_file)
6358 AC_SUBST(gcc_config_arguments)
6359 AC_SUBST(gcc_gxx_include_dir)
6360 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6361 AC_SUBST(host_exeext)
6362 AC_SUBST(host_xm_file_list)
6363 AC_SUBST(host_xm_include_list)
6364 AC_SUBST(host_xm_defines)
6365 AC_SUBST(out_host_hook_obj)
6367 AC_SUBST(lang_opt_files)
6368 AC_SUBST(lang_specs_files)
6369 AC_SUBST(lang_tree_files)
6370 AC_SUBST(local_prefix)
6372 AC_SUBST(objc_boehm_gc)
6374 AC_SUBST(out_object_file)
6375 AC_SUBST(common_out_file)
6376 AC_SUBST(common_out_object_file)
6377 AC_SUBST(tm_file_list)
6378 AC_SUBST(tm_include_list)
6379 AC_SUBST(tm_defines)
6380 AC_SUBST(tm_p_file_list)
6381 AC_SUBST(tm_p_include_list)
6382 AC_SUBST(xm_file_list)
6383 AC_SUBST(xm_include_list)
6384 AC_SUBST(xm_defines)
6385 AC_SUBST(use_gcc_stdint)
6386 AC_SUBST(c_target_objs)
6387 AC_SUBST(cxx_target_objs)
6388 AC_SUBST(fortran_target_objs)
6389 AC_SUBST(target_cpu_default)
6391 AC_SUBST_FILE(language_hooks)
6394 if test x${build} = x${host} ; then
6395 if test x${host} = x${target} ; then
6396 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6398 echo "Links are now set up to build a cross-compiler" 1>&2
6399 echo " from ${host} to ${target}." 1>&2
6402 if test x${host} = x${target} ; then
6403 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6404 echo " for ${target}." 1>&2
6406 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6407 echo " from ${host} to ${target}." 1>&2
6411 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6412 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6414 AC_ARG_VAR(ISLLIBS,[How to link isl])
6415 AC_ARG_VAR(ISLINC,[How to find isl include files])
6416 if test "x${ISLLIBS}" != "x" ; then
6417 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6421 AC_SUBST(pluginlibs)
6422 AC_SUBST(enable_plugin)
6423 if test x"$enable_plugin" = x"yes"; then
6424 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6428 # Enable --enable-host-shared
6429 AC_ARG_ENABLE(host-shared,
6430 [AS_HELP_STRING([--enable-host-shared],
6431 [build host code as shared libraries])],
6432 [PICFLAG=-fPIC], [PICFLAG=])
6433 AC_SUBST(enable_host_shared)
6437 AC_ARG_ENABLE(libquadmath-support,
6438 [AS_HELP_STRING([--disable-libquadmath-support],
6439 [disable libquadmath support for Fortran])],
6440 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6441 ENABLE_LIBQUADMATH_SUPPORT=yes)
6442 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6443 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6444 [Define to 1 to enable libquadmath support])
6448 # Specify what hash style to use by default.
6449 AC_ARG_WITH([linker-hash-style],
6450 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6451 [specify the linker hash style])],
6452 [case x"$withval" in
6454 LINKER_HASH_STYLE=sysv
6457 LINKER_HASH_STYLE=gnu
6460 LINKER_HASH_STYLE=both
6463 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6466 [LINKER_HASH_STYLE=''])
6467 if test x"${LINKER_HASH_STYLE}" != x; then
6468 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6469 [The linker hash style])
6472 # Specify what should be the default of -fdiagnostics-color option.
6473 AC_ARG_WITH([diagnostics-color],
6474 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6475 [specify the default of -fdiagnostics-color option
6476 auto-if-env stands for -fdiagnostics-color=auto if
6477 GCC_COLOR environment variable is present and
6478 -fdiagnostics-color=never otherwise])],
6479 [case x"$withval" in
6481 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6484 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6487 DIAGNOSTICS_COLOR_DEFAULT=-1
6490 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6493 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6496 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6497 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6498 [The default for -fdiagnostics-color option])
6500 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6501 # of jit/jit-playback.c.
6502 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6503 echo "gcc_driver_version: ${gcc_driver_version}"
6504 cat > gcc-driver-name.h <<EOF
6505 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6508 # Check whether --enable-default-pie was given.
6509 AC_ARG_ENABLE(default-pie,
6510 [AS_HELP_STRING([--enable-default-pie],
6511 [enable Position Independent Executable as default])],
6512 enable_default_pie=$enableval,
6513 enable_default_pie=no)
6514 if test x$enable_default_pie = xyes ; then
6515 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6516 [Define if your target supports default PIE and it is enabled.])
6518 AC_SUBST([enable_default_pie])
6520 # Check if -fno-PIE works.
6521 AC_CACHE_CHECK([for -fno-PIE option],
6523 [saved_CXXFLAGS="$CXXFLAGS"
6524 CXXFLAGS="$CXXFLAGS -fno-PIE"
6525 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6526 [gcc_cv_c_no_fpie=yes],
6527 [gcc_cv_c_no_fpie=no])
6528 CXXFLAGS="$saved_CXXFLAGS"])
6529 if test "$gcc_cv_c_no_fpie" = "yes"; then
6530 NO_PIE_CFLAGS="-fno-PIE"
6532 AC_SUBST([NO_PIE_CFLAGS])
6534 # Check if -no-pie works.
6535 AC_CACHE_CHECK([for -no-pie option],
6537 [saved_LDFLAGS="$LDFLAGS"
6538 LDFLAGS="$LDFLAGS -no-pie"
6539 AC_LINK_IFELSE([int main(void) {return 0;}],
6540 [gcc_cv_no_pie=yes],
6542 LDFLAGS="$saved_LDFLAGS"])
6543 if test "$gcc_cv_no_pie" = "yes"; then
6544 NO_PIE_FLAG="-no-pie"
6546 AC_SUBST([NO_PIE_FLAG])
6548 # Check linker supports '-z bndplt'
6549 ld_bndplt_support=no
6550 AC_MSG_CHECKING(linker -z bndplt option)
6551 if test x"$ld_is_gold" = xno; then
6552 if test $in_tree_ld = yes ; then
6553 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6554 ld_bndplt_support=yes
6556 elif test x$gcc_cv_ld != x; then
6557 # Check if linker supports -a bndplt option
6558 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6559 ld_bndplt_support=yes
6563 if test x"$ld_bndplt_support" = xyes; then
6564 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6565 [Define if your linker supports -z bndplt])
6567 AC_MSG_RESULT($ld_bndplt_support)
6569 # Check linker supports '--push-state'/'--pop-state'
6570 ld_pushpopstate_support=no
6571 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6572 if test x"$ld_is_gold" = xno; then
6573 if test $in_tree_ld = yes ; then
6574 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6575 ld_pushpopstate_support=yes
6577 elif test x$gcc_cv_ld != x; then
6578 # Check if linker supports --push-state/--pop-state options
6579 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6580 ld_pushpopstate_support=yes
6584 if test x"$ld_pushpopstate_support" = xyes; then
6585 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6586 [Define if your linker supports --push-state/--pop-state])
6588 AC_MSG_RESULT($ld_pushpopstate_support)
6590 # Configure the subdirectories
6591 # AC_CONFIG_SUBDIRS($subdirs)
6593 # Create the Makefile
6594 # and configure language subdirectories
6595 AC_CONFIG_FILES($all_outputs)
6597 AC_CONFIG_COMMANDS([default],
6599 case ${CONFIG_HEADERS} in
6600 *auto-host.h:config.in*)
6603 # Make sure all the subdirs exist.
6604 for d in $subdirs doc build common c-family
6606 test -d $d || mkdir $d
6609 [subdirs='$subdirs'])