2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2019 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 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.c)
28 AC_CONFIG_HEADER(auto-host.h:config.in)
30 gcc_version=`cat $srcdir/BASE-VER`
32 # Determine the host, build, and target systems
37 # Determine the noncanonical host name, for Ada.
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Used for constructing correct paths for offload compilers.
44 real_target_noncanonical=${target_noncanonical}
47 # Determine the target- and build-specific subdirectories
50 # Set program_transform_name
53 # Check for bogus environment variables.
54 # Test if LIBRARY_PATH contains the notation for the current directory
55 # since this would lead to problems installing/building glibc.
56 # LIBRARY_PATH contains the current directory if one of the following
58 # - one of the terminals (":" and ";") is the first or last sign
59 # - two terminals occur directly after each other
60 # - the path contains an element with a dot in it
61 AC_MSG_CHECKING(LIBRARY_PATH variable)
63 case ${LIBRARY_PATH} in
64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
65 library_path_setting="contains current directory"
68 library_path_setting="ok"
72 AC_MSG_RESULT($library_path_setting)
73 if test "$library_path_setting" != "ok"; then
75 *** LIBRARY_PATH shouldn't contain the current directory when
76 *** building gcc. Please change the environment variable
77 *** and run configure again.])
80 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
81 # since this would lead to problems installing/building glibc.
82 # GCC_EXEC_PREFIX contains the current directory if one of the following
84 # - one of the terminals (":" and ";") is the first or last sign
85 # - two terminals occur directly after each other
86 # - the path contains an element with a dot in it
87 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
89 case ${GCC_EXEC_PREFIX} in
90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
91 gcc_exec_prefix_setting="contains current directory"
94 gcc_exec_prefix_setting="ok"
98 AC_MSG_RESULT($gcc_exec_prefix_setting)
99 if test "$gcc_exec_prefix_setting" != "ok"; then
101 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
102 *** building gcc. Please change the environment variable
103 *** and run configure again.])
110 # Specify the local prefix
112 AC_ARG_WITH(local-prefix,
113 [AS_HELP_STRING([--with-local-prefix=DIR],
114 [specifies directory to put local include])],
115 [case "${withval}" in
116 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
118 *) local_prefix=$with_local_prefix ;;
121 # Default local prefix if it is empty
122 if test x$local_prefix = x; then
123 local_prefix=/usr/local
126 AC_ARG_WITH([native-system-header-dir],
127 [ --with-native-system-header-dir=dir
128 use dir as the directory to look for standard
129 system header files in. Defaults to /usr/include.],
131 case ${with_native_system_header_dir} in
132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
133 /* | [[A-Za-z]]:[[\\/]]*) ;;
134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
136 configured_native_system_header_dir="${withval}"
137 ], [configured_native_system_header_dir=])
139 AC_ARG_WITH(build-sysroot,
140 [AS_HELP_STRING([--with-build-sysroot=sysroot],
141 [use sysroot as the system root during the build])],
142 [if test x"$withval" != x ; then
143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
145 [SYSROOT_CFLAGS_FOR_TARGET=])
146 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
148 if test "x$prefix" = xNONE; then
149 test_prefix=/usr/local
153 if test "x$exec_prefix" = xNONE; then
154 test_exec_prefix=$test_prefix
156 test_exec_prefix=$exec_prefix
160 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
161 [search for usr/lib, usr/include, et al, within DIR])],
163 case ${with_sysroot} in
165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
167 case ${with_sysroot} in
168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
175 case ${TARGET_SYSTEM_ROOT} in
176 "${test_prefix}"|"${test_prefix}/"*|\
177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
178 '${prefix}'|'${prefix}/'*|\
179 '${exec_prefix}'|'${exec_prefix}/'*)
180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
181 TARGET_SYSTEM_ROOT_DEFINE="$t"
186 TARGET_SYSTEM_ROOT_DEFINE=
187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
189 AC_SUBST(TARGET_SYSTEM_ROOT)
190 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
191 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
193 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
194 # passed in by the toplevel make and thus we'd get different behavior
195 # depending on where we built the sources.
197 # Specify the g++ header file directory
198 AC_ARG_WITH(gxx-include-dir,
199 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
200 [specifies directory to put g++ header files])],
201 [case "${withval}" in
202 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
204 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
207 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
208 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
209 # relative to the sysroot.
210 gcc_gxx_include_dir_add_sysroot=0
212 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
213 if test x${gcc_gxx_include_dir} = x; then
214 if test x${enable_version_specific_runtime_libs} = xyes; then
215 gcc_gxx_include_dir='${libsubdir}/include/c++'
217 libstdcxx_incdir='include/c++/$(version)'
218 if test x$host != x$target; then
219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
223 elif test "${with_sysroot+set}" = set; then
224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
225 if test "${gcc_gxx_without_sysroot}"; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
227 gcc_gxx_include_dir_add_sysroot=1
231 AC_ARG_WITH(cpp_install_dir,
232 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
233 [install the user visible C preprocessor in DIR
234 (relative to PREFIX) as well as PREFIX/bin])],
235 [if test x$withval = xyes; then
236 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
237 elif test x$withval != xno; then
238 cpp_install_dir=$withval
241 # We would like to our source tree to be readonly. However when releases or
242 # pre-releases are generated, the flex/bison generated files as well as the
243 # various formats of manuals need to be included along with the rest of the
244 # sources. Therefore we have --enable-generated-files-in-srcdir to do
247 AC_MSG_CHECKING([whether to place generated files in the source directory])
248 dnl generated-files-in-srcdir is disabled by default
249 AC_ARG_ENABLE(generated-files-in-srcdir,
250 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
251 [put copies of generated files in source dir
252 intended for creating source tarballs for users
253 without texinfo bison or flex])],
254 generated_files_in_srcdir=$enableval,
255 generated_files_in_srcdir=no)
257 AC_MSG_RESULT($generated_files_in_srcdir)
259 if test "$generated_files_in_srcdir" = "yes"; then
266 # -------------------
267 # Find default linker
268 # -------------------
272 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
273 gnu_ld_flag="$with_gnu_ld",
277 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
281 # With pre-defined ld
283 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
284 DEFAULT_LINKER="$with_ld")
285 if test x"${DEFAULT_LINKER+set}" = x"set"; then
286 if test ! -x "$DEFAULT_LINKER"; then
287 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
288 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
290 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
293 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
294 [Define to enable the use of a default linker.])
297 AC_MSG_CHECKING([whether a default linker was specified])
298 if test x"${DEFAULT_LINKER+set}" = x"set"; then
299 if test x"$gnu_ld_flag" = x"no"; then
300 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
302 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
308 # With demangler in GNU ld
309 AC_ARG_WITH(demangler-in-ld,
310 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
311 demangler_in_ld="$with_demangler_in_ld",
314 # ----------------------
315 # Find default assembler
316 # ----------------------
320 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
321 gas_flag="$with_gnu_as",
325 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
326 DEFAULT_ASSEMBLER="$with_as")
327 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
328 if test ! -x "$DEFAULT_ASSEMBLER"; then
329 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
330 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
333 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
334 [Define to enable the use of a default assembler.])
337 AC_MSG_CHECKING([whether a default assembler was specified])
338 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
339 if test x"$gas_flag" = x"no"; then
340 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
342 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
352 # If a non-executable a.out is present (e.g. created by GNU as above even if
353 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
354 # file, even when creating an executable, so an execution test fails.
355 # Remove possible default executable files to avoid this.
357 # FIXME: This really belongs into AC_PROG_CC and can be removed once
358 # Autoconf includes it.
359 rm -f a.out a.exe b.out
361 # Find the native compiler
364 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
366 # Do configure tests with the C++ compiler, since that's what we build with.
369 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
370 # optimizations to be activated explicitly by the toplevel.
373 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
374 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
379 # Determine PICFLAG for target gnatlib.
380 GCC_PICFLAG_FOR_TARGET
381 AC_SUBST(PICFLAG_FOR_TARGET)
383 # -------------------------
384 # Check C compiler features
385 # -------------------------
387 AC_USE_SYSTEM_EXTENSIONS
393 # sizeof(char) is 1 by definition.
394 AC_CHECK_SIZEOF(void *)
395 AC_CHECK_SIZEOF(short)
397 AC_CHECK_SIZEOF(long)
398 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
400 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
401 AC_MSG_ERROR([uint64_t or int64_t not found])
404 # check what underlying integer type int64_t uses
405 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
406 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
410 template <typename T> struct X { };
412 struct X<long> { typedef long t; };
413 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
414 if test "$ac_cv_int64_t_type" = "long"; then
415 AC_DEFINE(INT64_T_IS_LONG, 1,
416 [Define if int64_t uses long as underlying type.])
418 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
422 template <typename T> struct X { };
424 struct X<long long> { typedef long long t; };
425 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
428 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
429 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
431 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
432 if test $ac_cv_std_swap_in_utility = yes; then
433 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
434 [Define if <utility> defines std::swap.])
437 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
438 # If the host compiler is affected by the bug, and we build with optimization
439 # enabled (which happens e.g. when cross-compiling), the pool allocator may
440 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
441 # Since there is no reliable feature check for the presence of this bug,
442 # we simply use a GCC version number check. (This should never trigger for
443 # stages 2 or 3 of a native bootstrap.)
445 if test "$GCC" = yes; then
446 saved_CXXFLAGS="$CXXFLAGS"
448 # The following test compilation will succeed if and only if $CXX accepts
449 # -fno-strict-aliasing *and* is older than GCC 4.3.
450 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
451 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
452 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
453 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
454 #error compiler not affected by placement new aliasing bug
457 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
458 [AC_MSG_RESULT([no])])
460 CXXFLAGS="$saved_CXXFLAGS"
462 AC_SUBST(aliasing_flags)
466 # ---------------------
467 # Warnings and checking
468 # ---------------------
470 # Check $CC warning features (if it's GCC).
471 # We want to use -pedantic, but we don't want warnings about
475 # * C++11 narrowing conversions in { }
476 # So, we only use -pedantic if we can disable those warnings.
478 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
479 AC_ARG_ENABLE(build-format-warnings,
480 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
481 [],[enable_build_format_warnings=yes])
482 AS_IF([test $enable_build_format_warnings = no],
483 [wf_opt=-Wno-format],[wf_opt=])
484 ACX_PROG_CXX_WARNING_OPTS(
485 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
486 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
490 [-Wno-error=format-diag])), [c_loose_warn])
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$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 # default stack clash protection guard size as power of twos in bytes.
815 # Please keep these in sync with params.def.
819 # Keep the default value when the option is not used to 0, this allows us to
820 # distinguish between the cases where the user specifially set a value via
821 # configure and when the normal default value is used.
822 AC_ARG_WITH(stack-clash-protection-guard-size,
823 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
824 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
825 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
826 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
827 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
828 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
829 AC_MSG_ERROR(m4_normalize([
830 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
831 Must be between $stk_clash_min and $stk_clash_max.]))
834 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
835 [Define to larger than zero set the default stack clash protector size.])
837 # Enable __cxa_atexit for C++.
838 AC_ARG_ENABLE(__cxa_atexit,
839 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
842 # Enable C extension for decimal float if target supports it.
843 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
845 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
846 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
847 [Define to 1 to enable decimal float extension to C.])
849 # Use default_decimal_float for dependency.
850 enable_decimal_float=$default_decimal_float
852 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
853 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
854 [Define to 1 to specify that we are using the BID decimal floating
855 point format instead of DPD])
857 # Enable C extension for fixed-point arithmetic.
858 AC_ARG_ENABLE(fixed-point,
859 [AS_HELP_STRING([--enable-fixed-point],
860 [enable fixed-point arithmetic extension to C])],
865 enable_fixed_point=yes
869 enable_fixed_point=yes
872 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
873 enable_fixed_point=no
877 AC_SUBST(enable_fixed_point)
879 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
880 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
881 [Define to 1 to enable fixed-point arithmetic extension to C.])
884 # Pass with no value to take the default
885 # Pass with a value to specify a thread package
886 AC_ARG_ENABLE(threads,
887 [AS_HELP_STRING([[--enable-threads[=LIB]]],
888 [enable thread usage for target GCC,
889 using LIB thread package])],,
893 [AS_HELP_STRING([--enable-tls],
894 [enable or disable generation of tls code
895 overriding the assembler check for tls support])],
899 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
900 Valid choices are 'yes' and 'no'.]) ;;
904 AC_ARG_ENABLE(vtable-verify,
905 [AS_HELP_STRING([--enable-vtable-verify],
906 [enable vtable verification feature])],,
907 [enable_vtable_verify=no])
908 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
909 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
910 [Define 0/1 if vtable verification feature is enabled.])
912 AC_ARG_ENABLE(objc-gc,
913 [AS_HELP_STRING([--enable-objc-gc],
914 [enable the use of Boehm's garbage collector with
915 the GNU Objective-C runtime])],
916 if test x$enable_objc_gc = xno; then
924 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
925 dwarf2="$with_dwarf2",
928 AC_ARG_ENABLE(shared,
929 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
931 case $enable_shared in
935 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
936 for pkg in $enableval; do
937 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
944 ], [enable_shared=yes])
945 AC_SUBST(enable_shared)
948 [ --disable-gcov don't provide libgcov and related host tools],
949 [], [enable_gcov=yes])
950 AC_SUBST(enable_gcov)
953 [AS_HELP_STRING([--with-specs=SPECS],
954 [add SPECS to driver command-line processing])],
955 [CONFIGURE_SPECS=$withval],
958 AC_SUBST(CONFIGURE_SPECS)
960 ACX_PKGVERSION([GCC])
961 ACX_BUGURL([https://gcc.gnu.org/bugs/])
963 # Sanity check enable_languages in case someone does not run the toplevel
964 # configure # script.
965 AC_ARG_ENABLE(languages,
966 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
967 [case ,${enable_languages}, in
969 # go safe -- we cannot be much sure without the toplevel
971 # analysis of which target libs are present and usable
975 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
980 enable_languages=c,${enable_languages}
983 [enable_languages=c])
985 if test x"$enable_as_accelerator_for" != x; then
986 AC_DEFINE(ACCEL_COMPILER, 1,
987 [Define if this compiler should be built as the offload target compiler.])
988 enable_as_accelerator=yes
991 # In this case we expect offload compiler to be built as native, so we
992 # need to rename the driver to avoid clashes with host's drivers.
993 program_transform_name="s&^&${target}-&" ;;
995 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
996 program_transform_name=`echo $program_transform_name | sed $sedscript`
997 accel_dir_suffix=/accel/${target_noncanonical}
998 real_target_noncanonical=${enable_as_accelerator_for}
1000 AC_SUBST(enable_as_accelerator)
1001 AC_SUBST(real_target_noncanonical)
1002 AC_SUBST(accel_dir_suffix)
1004 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1005 tgt=`echo $tgt | sed 's/=.*//'`
1007 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1013 if test x"$offload_targets" = x; then
1014 offload_targets=$tgt
1016 offload_targets="$offload_targets,$tgt"
1019 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1020 [Define to offload targets, separated by commas.])
1021 if test x"$enable_offloading" != x; then
1022 AC_DEFINE(ENABLE_OFFLOADING, 1,
1023 [Define this to enable support for offloading.])
1025 AC_DEFINE(ENABLE_OFFLOADING, 0,
1026 [Define this to enable support for offloading.])
1029 if test x"$enable_hsa" = x1 ; then
1030 AC_DEFINE(ENABLE_HSA, 1,
1031 [Define this to enable support for generating HSAIL.])
1034 AC_ARG_WITH(multilib-list,
1035 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1037 with_multilib_list=default)
1039 # -------------------------
1040 # Checks for other programs
1041 # -------------------------
1045 # Find some useful tools
1047 # We need awk to create options.c and options.h.
1048 # Bail out if it's missing.
1050 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1057 AC_SUBST(ranlib_flags)
1061 # See if cmp has --ignore-initial.
1062 gcc_AC_PROG_CMP_IGNORE_INITIAL
1064 # See if we have the mktemp command.
1065 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1067 # See if makeinfo has been installed and is modern enough
1068 # that we can use it.
1069 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1070 [GNU texinfo.* \([0-9][0-9.]*\)],
1071 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1072 if test $gcc_cv_prog_makeinfo_modern = no; then
1074 *** Makeinfo is missing or too old.
1075 *** Info documentation will not be built.])
1080 AC_SUBST(BUILD_INFO)
1082 # Is pod2man recent enough to regenerate manpages?
1083 AC_MSG_CHECKING([for recent Pod::Man])
1084 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1086 GENERATED_MANPAGES=generated-manpages
1091 AC_SUBST(GENERATED_MANPAGES)
1093 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1096 dnl Don't use AC_PROG_LEX; we insist on flex.
1097 dnl LEXLIB is not useful in gcc.
1098 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1101 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1103 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1104 # check for build == host before using them.
1107 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1108 && test -d ../binutils ; then
1109 NM='${objdir}/../binutils/nm-new'
1111 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1115 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1116 && test -d ../binutils ; then
1117 AR='${objdir}/../binutils/ar'
1119 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1122 # The jit documentation looks better if built with sphinx, but can be
1123 # built with texinfo if sphinx is not available.
1124 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1125 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1127 # --------------------
1128 # Checks for C headers
1129 # --------------------
1131 # Need to reject headers which give warnings, so that the -Werror bootstrap
1132 # works later. *sigh* This needs to come before all header checks.
1139 AC_HEADER_TIOCGWINSZ
1140 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1141 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1142 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1143 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1145 # Check for thread headers.
1146 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1147 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1149 # These tests can't be done till we know if we have limits.h.
1153 # ----------------------
1154 # Checks for C++ headers
1155 # ----------------------
1157 dnl Autoconf will give an error in the configure script if there is no
1158 dnl C++ preprocessor. Hack to prevent that.
1159 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1161 m4_popdef([AC_MSG_ERROR])[]dnl
1163 AC_CHECK_HEADERS(unordered_map)
1164 AC_CHECK_HEADERS(tr1/unordered_map)
1165 AC_CHECK_HEADERS(ext/hash_map)
1168 # Dependency checking.
1172 AC_CONFIG_COMMANDS([gccdepdir],[
1173 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1174 for lang in $subdirs c-family common
1176 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1177 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1179 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1186 # These libraries may be used by collect2.
1187 # We may need a special search path to get them linked.
1188 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1190 for libs in '' -lld -lmld \
1191 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1192 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1195 AC_TRY_LINK_FUNC(ldopen,
1196 [gcc_cv_collect2_libs="$libs"; break])
1199 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1200 case $gcc_cv_collect2_libs in
1202 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1204 AC_SUBST(COLLECT2_LIBS)
1206 # When building Ada code on Alpha, we need exc_resume which is usually in
1207 # -lexc. So test for it.
1210 AC_SEARCH_LIBS(exc_resume, exc)
1213 AC_SUBST(GNAT_LIBEXC)
1215 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1218 AC_SEARCH_LIBS(kstat_open, kstat)
1219 EXTRA_GCC_LIBS="$LIBS"
1221 AC_SUBST(EXTRA_GCC_LIBS)
1223 # Some systems put ldexp and frexp in libm instead of libc; assume
1224 # they're both in the same place. jcf-dump needs them.
1227 AC_SEARCH_LIBS(ldexp, m)
1232 # Some systems need dlopen
1235 AC_SEARCH_LIBS(dlopen, dl)
1240 # Use <inttypes.h> only if it exists,
1241 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1243 AC_MSG_CHECKING(for inttypes.h)
1244 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1245 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1246 [[#define __STDC_FORMAT_MACROS
1247 #include <sys/types.h>
1248 #include <inttypes.h>]],
1253 [gcc_cv_header_inttypes_h=yes],
1254 [gcc_cv_header_inttypes_h=no])])
1255 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1256 if test $gcc_cv_header_inttypes_h = yes; then
1257 AC_DEFINE(HAVE_INTTYPES_H, 1,
1258 [Define if you have a working <inttypes.h> header file.])
1261 dnl Disabled until we have a complete test for buggy enum bitfields.
1262 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1264 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1265 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1266 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1267 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1268 putchar_unlocked putc_unlocked)
1269 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1270 popen sysconf strsignal getrusage nl_langinfo \
1271 gettimeofday mbstowcs wcswidth mmap setlocale \
1272 gcc_UNLOCKED_FUNCS madvise)
1274 if test x$ac_cv_func_mbstowcs = xyes; then
1275 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1276 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1282 [gcc_cv_func_mbstowcs_works=yes],
1283 [gcc_cv_func_mbstowcs_works=no],
1284 [gcc_cv_func_mbstowcs_works=yes])])
1285 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1286 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1287 [Define this macro if mbstowcs does not crash when its
1288 first argument is NULL.])
1292 AC_CHECK_TYPE(ssize_t, int)
1293 AC_CHECK_TYPE(caddr_t, char *)
1295 GCC_AC_FUNC_MMAP_BLACKLIST
1299 # Under VMS, vfork works very differently than on Unix. The standard test
1300 # won't work, and it isn't easily adaptable. It makes more sense to
1302 ac_cv_func_vfork_works=yes
1309 # Until we have in-tree GNU iconv:
1311 if test -f "$LTLIBICONV"; then
1312 LIBICONV_DEP=$LTLIBICONV
1314 AC_SUBST(LIBICONV_DEP)
1320 # We will need to find libiberty.h and ansidecl.h
1321 saved_CFLAGS="$CFLAGS"
1322 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1323 saved_CXXFLAGS="$CXXFLAGS"
1324 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1326 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1327 # normal autoconf function for these. But force definition of
1328 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1329 # basename handling in libiberty.h.
1330 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1331 #undef HAVE_DECL_BASENAME
1332 #define HAVE_DECL_BASENAME 1
1333 #include "ansidecl.h"
1334 #include "system.h"])
1336 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1337 madvise stpcpy strnlen strsignal strverscmp \
1338 strtol strtoul strtoll strtoull setenv unsetenv \
1339 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1340 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1341 #include "ansidecl.h"
1342 #include "system.h"])
1344 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1345 #include "ansidecl.h"
1347 #ifdef HAVE_SYS_RESOURCE_H
1348 #include <sys/resource.h>
1352 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1353 #include "ansidecl.h"
1355 #ifdef HAVE_SYS_RESOURCE_H
1356 #include <sys/resource.h>
1358 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1359 [Define to `long' if <sys/resource.h> doesn't define.])])
1361 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1362 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1363 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1364 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1365 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1366 #include "ansidecl.h"
1375 gcc_AC_CHECK_DECLS(times, , ,[
1376 #include "ansidecl.h"
1378 #ifdef HAVE_SYS_TIMES_H
1379 #include <sys/times.h>
1383 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1384 #include "ansidecl.h"
1389 # More time-related stuff.
1390 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1391 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1392 #include "ansidecl.h"
1394 #ifdef HAVE_SYS_TIMES_H
1395 #include <sys/times.h>
1397 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1398 if test $ac_cv_struct_tms = yes; then
1399 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1400 [Define if <sys/times.h> defines struct tms.])
1403 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1404 # revisit after autoconf 2.50.
1405 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1406 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1407 #include "ansidecl.h"
1409 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1410 if test $gcc_cv_type_clock_t = yes; then
1411 AC_DEFINE(HAVE_CLOCK_T, 1,
1412 [Define if <time.h> defines clock_t.])
1415 # Check if F_SETLKW is supported by fcntl.
1416 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1417 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1418 #include <fcntl.h>]], [[
1424 return fcntl (1, F_SETLKW, &fl);]])],
1425 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1426 if test $ac_cv_f_setlkw = yes; then
1427 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1428 [Define if F_SETLKW supported by fcntl.])
1431 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1432 CFLAGS="$saved_CFLAGS"
1433 CXXFLAGS="$saved_CXXFLAGS"
1435 # mkdir takes a single argument on some systems.
1436 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1444 # With Setjmp/Longjmp based exception handling.
1445 AC_ARG_ENABLE(sjlj-exceptions,
1446 [AS_HELP_STRING([--enable-sjlj-exceptions],
1447 [arrange to use setjmp/longjmp exception handling])],
1450 if test $enableval != yes; then
1451 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1456 force_sjlj_exceptions=yes],
1459 force_sjlj_exceptions=yes
1463 force_sjlj_exceptions=yes
1467 force_sjlj_exceptions=no
1470 if test $force_sjlj_exceptions = yes; then
1471 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1472 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1473 [Define 0/1 to force the choice for exception handling model.])
1476 # --------------------------------------------------------
1477 # Build, host, and target specific configuration fragments
1478 # --------------------------------------------------------
1480 # Collect build-machine-specific information.
1481 . ${srcdir}/config.build || exit 1
1483 # Collect host-machine-specific information.
1484 . ${srcdir}/config.host || exit 1
1488 # Collect target-machine-specific information.
1489 . ${srcdir}/config.gcc || exit 1
1491 extra_objs="${host_extra_objs} ${extra_objs}"
1492 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1494 # Default the target-machine variables that were not explicitly set.
1495 if test x"$tm_file" = x
1496 then tm_file=$cpu_type/$cpu_type.h; fi
1498 if test x"$extra_headers" = x
1499 then extra_headers=; fi
1501 if test x$md_file = x
1502 then md_file=$cpu_type/$cpu_type.md; fi
1504 if test x$out_file = x
1505 then out_file=$cpu_type/$cpu_type.c; fi
1507 if test x"$tmake_file" = x
1508 then tmake_file=$cpu_type/t-$cpu_type
1511 # Support --enable-initfini-array.
1512 if test x$enable_initfini_array != xno; then
1513 tm_file="${tm_file} initfini-array.h"
1516 if test x"$dwarf2" = xyes
1517 then tm_file="$tm_file tm-dwarf2.h"
1520 # Say what files are being used for the output code and MD file.
1521 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1522 echo "Using \`$srcdir/config/$md_file' as machine description file."
1524 # If any of the xm_file variables contain nonexistent files, warn
1525 # about them and drop them.
1528 for x in $build_xm_file; do
1529 if test -f $srcdir/config/$x
1531 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1537 for x in $host_xm_file; do
1538 if test -f $srcdir/config/$x
1540 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1546 for x in $xm_file; do
1547 if test -f $srcdir/config/$x
1549 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1555 for f in $tm_file; do
1558 if test $count = ax; then
1559 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1561 echo "Using the following target machine macro files:"
1562 for f in $tm_file; do
1563 echo " $srcdir/config/$f"
1567 if test x$use_long_long_for_widest_fast_int = xyes; then
1568 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1569 [Define to 1 if the 'long long' type is wider than 'long' but still
1570 efficiently supported by the host hardware.])
1573 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1574 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1576 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1577 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1580 for f in $host_xm_file; do
1583 if test $count = a; then
1585 elif test $count = ax; then
1586 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1588 echo "Using the following host machine macro files:"
1589 for f in $host_xm_file; do
1590 echo " $srcdir/config/$f"
1593 echo "Using ${out_host_hook_obj} for host machine hooks."
1595 if test "$host_xm_file" != "$build_xm_file"; then
1597 for f in $build_xm_file; do
1600 if test $count = a; then
1602 elif test $count = ax; then
1603 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1605 echo "Using the following build machine macro files:"
1606 for f in $build_xm_file; do
1607 echo " $srcdir/config/$f"
1612 if test -n "$configured_native_system_header_dir"; then
1613 native_system_header_dir=$configured_native_system_header_dir
1615 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1616 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1620 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1621 gcc_cv_mcontext_underscores,
1622 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1623 #include <sys/cdefs.h>
1624 #include <sys/signal.h>
1625 #include <ucontext.h>
1626 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1628 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1629 if test $gcc_cv_mcontext_underscores = yes; then
1630 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1631 [mcontext_t fields start with __])
1640 # Check if a valid thread package
1641 case ${enable_threads} in
1644 target_thread_file='single'
1648 target_thread_file='single'
1650 aix | dce | lynx | mipssde | posix | rtems | \
1651 single | tpf | vxworks | win32)
1652 target_thread_file=${enable_threads}
1655 echo "${enable_threads} is an unknown thread package" 1>&2
1660 if test x${thread_file} = x; then
1661 # No thread file set by target-specific clauses in config.gcc,
1662 # so use file chosen by default logic above
1663 thread_file=${target_thread_file}
1671 if test x$enable___cxa_atexit = xyes || \
1672 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1673 if test x$host = x$target; then
1675 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1676 # keyed to flag_use_cxa_atexit
1684 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1685 [echo "__cxa_atexit can't be enabled on this target"])
1689 # We can't check for __cxa_atexit when building a cross, so assume
1693 if test x$use_cxa_atexit = xyes; then
1694 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1695 [Define if you want to use __cxa_atexit, rather than atexit, to
1696 register C++ destructors for local statics and global objects.
1697 This is essential for fully standards-compliant handling of
1698 destructors, but requires __cxa_atexit in libc.])
1702 # Look for a file containing extra machine modes.
1703 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1704 extra_modes_file='$(srcdir)'/config/${extra_modes}
1705 AC_SUBST(extra_modes_file)
1706 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1707 [Define to the name of a file containing a list of extra machine modes
1708 for this architecture.])
1711 # Convert extra_options into a form suitable for Makefile use.
1714 for f in $extra_options; do
1715 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1716 all_opt_files="$all_opt_files $srcdir/config/$f"
1718 AC_SUBST(extra_opt_files)
1720 # auto-host.h is the file containing items generated by autoconf and is
1721 # the first file included by config.h.
1722 # If host=build, it is correct to have bconfig include auto-host.h
1723 # as well. If host!=build, we are in error and need to do more
1724 # work to find out the build config parameters.
1725 if test x$host = x$build
1727 build_auto=auto-host.h
1729 # We create a subdir, then run autoconf in the subdir.
1730 # To prevent recursion we set host and build for the new
1731 # invocation of configure to the build for this invocation
1738 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1739 *) realsrcdir=../${srcdir};;
1741 # Clearing GMPINC is necessary to prevent host headers being
1742 # used by the build compiler. Defining GENERATOR_FILE stops
1743 # system.h from including gmp.h.
1744 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1745 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1746 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1747 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1748 ${realsrcdir}/configure \
1749 --enable-languages=${enable_languages-all} \
1750 --target=$target_alias --host=$build_alias --build=$build_alias
1752 # We just finished tests for the build machine, so rename
1753 # the file auto-build.h in the gcc directory.
1754 mv auto-host.h ../auto-build.h
1757 build_auto=auto-build.h
1759 AC_SUBST(build_subdir)
1761 tm_file="${tm_file} defaults.h"
1762 tm_p_file="${tm_p_file} tm-preds.h"
1763 tm_d_file="${tm_d_file} defaults.h"
1764 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1765 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1766 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1767 # put this back in temporarily.
1768 xm_file="auto-host.h ansidecl.h ${xm_file}"
1775 # Compile in configure arguments.
1776 if test -f configargs.h ; then
1777 # Being re-configured.
1778 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1779 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1780 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1781 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1784 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1787 # Double all backslashes and backslash all quotes to turn
1788 # gcc_config_arguments into a C string.
1789 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1790 $gcc_config_arguments
1792 gcc_config_arguments_str=`cat conftest.out`
1795 cat > configargs.h <<EOF
1796 /* Generated automatically. */
1797 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1798 static const char thread_model[] = "$thread_file";
1800 static const struct {
1801 const char *name, *value;
1802 } configure_default_options[] = $configure_default_options;
1807 gcc_BASEVER=`cat $srcdir/BASE-VER`
1808 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1809 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1810 if test -f $srcdir/REVISION ; then
1811 gcc_REVISION=`cat $srcdir/REVISION`
1815 cat > plugin-version.h <<EOF
1816 #include "configargs.h"
1818 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1819 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1820 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1821 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1823 static char basever[] = "$gcc_BASEVER";
1824 static char datestamp[] = "$gcc_DATESTAMP";
1825 static char devphase[] = "$gcc_DEVPHASE";
1826 static char revision[] = "$gcc_REVISION";
1828 /* FIXME plugins: We should make the version information more precise.
1829 One way to do is to add a checksum. */
1831 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1833 configuration_arguments};
1837 # Determine what GCC version number to use in filesystem paths.
1840 # Internationalization
1841 ZW_GNU_GETTEXT_SISTER_DIR
1843 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1844 # -liconv on the link line twice.
1845 case "$LIBINTL" in *$LIBICONV*)
1849 AC_ARG_ENABLE(secureplt,
1850 [AS_HELP_STRING([--enable-secureplt],
1851 [enable -msecure-plt by default for PowerPC])],
1854 AC_ARG_ENABLE(mingw-wildcard,
1855 [AS_HELP_STRING([--enable-mingw-wildcard],
1856 [Set whether to expand wildcard on command-line.
1857 Default to platform configuration])],
1858 [],[enable_mingw_wildcard=platform])
1859 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1860 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1861 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1862 [Value to set mingw's _dowildcard to.])])
1864 AC_ARG_ENABLE(large-address-aware,
1865 [AS_HELP_STRING([--enable-large-address-aware],
1866 [Link mingw executables with --large-address-aware])])
1867 AS_IF([test x"$enable_large_address_aware" = xyes],
1868 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1869 [Define if we should link mingw executables with --large-address-aware])])
1871 AC_ARG_ENABLE(leading-mingw64-underscores,
1872 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1873 [enable leading underscores on 64 bit mingw targets]),
1875 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1876 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1877 [Define if we should use leading underscore on 64 bit mingw targets])])
1880 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1883 AC_ARG_ENABLE(frame-pointer,
1884 [AS_HELP_STRING([--enable-frame-pointer],
1885 [enable -fno-omit-frame-pointer by default for x86])], [],
1888 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
1889 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
1890 enable_frame_pointer=no
1893 enable_frame_pointer=yes
1899 i[[34567]]86-*-* | x86_64-*-*)
1900 if test "x$enable_cld" = xyes; then
1901 tm_defines="${tm_defines} USE_IX86_CLD=1"
1903 if test "x$enable_frame_pointer" = xyes; then
1904 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
1909 # Windows32 Registry support for specifying GCC installation paths.
1910 AC_ARG_ENABLE(win32-registry,
1911 [AS_HELP_STRING([--disable-win32-registry],
1912 [disable lookup of installation paths in the
1913 Registry on Windows hosts])
1914 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1915 AS_HELP_STRING([--enable-win32-registry=KEY],
1916 [use KEY instead of GCC version as the last portion
1917 of the registry key])],,)
1920 win32 | pe | cygwin* | mingw32*)
1921 if test "x$enable_win32_registry" != xno; then
1922 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1925 if test "x$enable_win32_registry" != xno; then
1926 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1927 [Define to 1 if installation paths should be looked up in the Windows
1928 Registry. Ignored on non-Windows hosts.])
1930 if test "x$enable_win32_registry" != xyes \
1931 && test "x$enable_win32_registry" != x; then
1932 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1933 [Define to be the last component of the Windows registry key under which
1934 to look for installation paths. The full key used will be
1935 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1936 The default is the GCC version number.])
1942 # Get an absolute path to the GCC top-level source directory
1943 holddir=`${PWDCMD-pwd}`
1945 topdir=`${PWDCMD-pwd}`
1948 # Conditionalize the makefile for this host machine.
1950 for f in ${host_xmake_file}
1952 if test -f ${srcdir}/config/$f
1954 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1958 # Conditionalize the makefile for this target machine.
1960 for f in ${tmake_file}
1962 if test -f ${srcdir}/config/$f
1964 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1967 tmake_file="${tmake_file_}"
1969 out_object_file=`basename $out_file .c`.o
1970 common_out_object_file=`basename $common_out_file .c`.o
1972 tm_file_list="options.h"
1973 tm_include_list="options.h insn-constants.h"
1974 for f in $tm_file; do
1977 f=`echo $f | sed 's/^..//'`
1978 tm_file_list="${tm_file_list} $f"
1979 tm_include_list="${tm_include_list} $f"
1982 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1983 tm_include_list="${tm_include_list} $f"
1986 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1987 tm_include_list="${tm_include_list} config/$f"
1994 for f in $tm_p_file; do
1997 tm_p_file_list="${tm_p_file_list} $f"
1998 tm_p_include_list="${tm_p_include_list} $f"
2001 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2002 tm_p_include_list="${tm_p_include_list} config/$f"
2007 tm_d_include_list="options.h insn-constants.h"
2008 for f in $tm_d_file; do
2011 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2012 tm_d_include_list="${tm_d_include_list} $f"
2015 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2016 tm_d_include_list="${tm_d_include_list} config/$f"
2023 for f in $xm_file; do
2026 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2027 xm_include_list="${xm_include_list} $f"
2030 xm_file_list="${xm_file_list} $f"
2031 xm_include_list="${xm_include_list} $f"
2034 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2035 xm_include_list="${xm_include_list} config/$f"
2041 host_xm_include_list=
2042 for f in $host_xm_file; do
2045 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2046 host_xm_include_list="${host_xm_include_list} $f"
2049 host_xm_file_list="${host_xm_file_list} $f"
2050 host_xm_include_list="${host_xm_include_list} $f"
2053 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2054 host_xm_include_list="${host_xm_include_list} config/$f"
2060 for f in $build_xm_file; do
2063 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2064 build_xm_include_list="${build_xm_include_list} $f"
2066 auto-build.h | auto-host.h )
2067 build_xm_file_list="${build_xm_file_list} $f"
2068 build_xm_include_list="${build_xm_include_list} $f"
2071 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2072 build_xm_include_list="${build_xm_include_list} config/$f"
2077 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2078 # cross-compiler which does not use the native headers and libraries.
2079 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2080 CROSS= AC_SUBST(CROSS)
2081 ALL=all.internal AC_SUBST(ALL)
2082 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2083 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2085 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2086 test x$build != x$host || test "x$with_build_sysroot" != x; then
2087 if test "x$with_build_sysroot" != x; then
2088 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2090 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2093 if test x$host != x$target
2095 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2097 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2098 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2099 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2102 if test "x$with_build_sysroot" != "x"; then
2103 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2104 elif test "x$with_sysroot" = x; then
2105 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2106 elif test "x$with_sysroot" = xyes; then
2107 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2109 target_header_dir="${with_sysroot}${native_system_header_dir}"
2112 target_header_dir=${native_system_header_dir}
2115 # If this is a cross-compiler that does not
2116 # have its own set of headers then define
2119 # If this is using newlib, without having the headers available now,
2120 # then define inhibit_libc in LIBGCC2_CFLAGS.
2121 # This prevents libgcc2 from containing any code which requires libc
2123 : ${inhibit_libc=false}
2124 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2125 test x$with_newlib = xyes ; } &&
2126 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2129 AC_SUBST(inhibit_libc)
2131 # When building gcc with a cross-compiler, we need to adjust things so
2132 # that the generator programs are still built with the native compiler.
2133 # Also, we cannot run fixincludes.
2135 # These are the normal (build=host) settings:
2136 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2137 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2138 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2139 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2140 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2141 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2143 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2144 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2146 # And these apply if build != host, or we are generating coverage data
2147 if test x$build != x$host || test "x$coverage_flags" != x
2149 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2150 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2151 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2153 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2154 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2155 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2156 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2158 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2159 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2161 # Expand extra_headers to include complete path.
2162 # This substitutes for lots of t-* files.
2164 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2165 for file in ${extra_headers} ; do
2166 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2169 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2170 if test x"$use_gcc_tgmath" = xyes
2171 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2174 # Define collect2 in Makefile.
2175 case $host_can_use_collect2 in
2177 *) collect2='collect2$(exeext)' ;;
2179 AC_SUBST([collect2])
2181 # Add a definition of USE_COLLECT2 if system wants one.
2182 case $use_collect2 in
2183 no) use_collect2= ;;
2186 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2187 xm_defines="${xm_defines} USE_COLLECT2"
2188 case $host_can_use_collect2 in
2190 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2196 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2197 [Define to the name of the LTO plugin DSO that must be
2198 passed to the linker's -plugin=LIB option.])
2200 # ---------------------------
2201 # Assembler & linker features
2202 # ---------------------------
2204 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2205 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2206 # However when ld-new is first executed from the build tree, libtool will
2207 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2208 # to the build tree. While doing this we need to use the previous-stage
2209 # linker, or we have an infinite loop. The presence of a shell script as
2210 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2211 # the gcc/collect-ld script. So we need to know how libtool works, or
2212 # exec-tool will fail.
2214 m4_defun([_LT_CONFIG_COMMANDS], [])
2217 AC_SUBST(enable_fast_install)
2219 # Identify the assembler which will work hand-in-glove with the newly
2220 # built GCC, so that we can examine its features. This is the assembler
2221 # which will be driven by the driver program.
2223 # If build != host, and we aren't building gas in-tree, we identify a
2224 # build->target assembler and hope that it will have the same features
2225 # as the host->target assembler we'll be using.
2226 gcc_cv_gas_major_version=
2227 gcc_cv_gas_minor_version=
2228 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2230 m4_pattern_allow([AS_FOR_TARGET])dnl
2231 AS_VAR_SET_IF(gcc_cv_as,, [
2232 if test -x "$DEFAULT_ASSEMBLER"; then
2233 gcc_cv_as="$DEFAULT_ASSEMBLER"
2234 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2235 && test -f ../gas/Makefile \
2236 && test x$build = x$host; then
2237 gcc_cv_as=../gas/as-new$build_exeext
2238 elif test -x as$build_exeext; then
2239 # Build using assembler in the current directory.
2240 gcc_cv_as=./as$build_exeext
2241 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2242 gcc_cv_as="$AS_FOR_TARGET"
2244 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2247 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2248 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2249 case "$ORIGINAL_AS_FOR_TARGET" in
2250 ./as | ./as$build_exeext) ;;
2251 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2254 AC_MSG_CHECKING(what assembler to use)
2255 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2256 # Single tree build which includes gas. We want to prefer it
2257 # over whatever linker top-level may have detected, since
2258 # we'll use what we're building after installation anyway.
2259 AC_MSG_RESULT(newly built gas)
2261 _gcc_COMPUTE_GAS_VERSION
2262 in_tree_gas_is_elf=no
2263 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2264 || (grep 'obj_format = multi' ../gas/Makefile \
2265 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2267 in_tree_gas_is_elf=yes
2270 AC_MSG_RESULT($gcc_cv_as)
2276 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2277 [case "${enableval}" in
2283 install_gold_as_default=no
2285 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2286 [case "${enableval}" in
2288 install_gold_as_default=yes
2291 if test x${default_ld} != x; then
2292 install_gold_as_default=yes
2298 AC_MSG_ERROR([invalid --enable-gold argument])
2302 # Identify the linker which will work hand-in-glove with the newly
2303 # built GCC, so that we can examine its features. This is the linker
2304 # which will be driven by the driver program.
2306 # If build != host, and we aren't building gas in-tree, we identify a
2307 # build->target linker and hope that it will have the same features
2308 # as the host->target linker we'll be using.
2309 gcc_cv_gld_major_version=
2310 gcc_cv_gld_minor_version=
2311 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2312 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2313 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2315 AS_VAR_SET_IF(gcc_cv_ld,, [
2316 if test -x "$DEFAULT_LINKER"; then
2317 gcc_cv_ld="$DEFAULT_LINKER"
2318 elif test $install_gold_as_default = yes \
2319 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2320 && test -f ../gold/Makefile \
2321 && test x$build = x$host; then
2322 gcc_cv_ld=../gold/ld-new$build_exeext
2323 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2324 && test -f ../ld/Makefile \
2325 && test x$build = x$host; then
2326 gcc_cv_ld=../ld/ld-new$build_exeext
2327 elif test -x collect-ld$build_exeext; then
2328 # Build using linker in the current directory.
2329 gcc_cv_ld=./collect-ld$build_exeext
2330 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2331 gcc_cv_ld="$LD_FOR_TARGET"
2333 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2336 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2337 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2338 # if the PLUGIN_LD is set ld-new, just have it as ld
2339 # as that is the installed named.
2340 if test x$PLUGIN_LD_SUFFIX = xld-new \
2341 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2344 AC_ARG_WITH(plugin-ld,
2345 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2346 [if test x"$withval" != x; then
2347 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2348 PLUGIN_LD_SUFFIX="$withval"
2350 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2351 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2353 # Check to see if we are using gold instead of ld
2354 AC_MSG_CHECKING(whether we are using gold)
2356 if test x$gcc_cv_ld != x; then
2357 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2358 | grep "GNU gold" > /dev/null; then
2362 AC_MSG_RESULT($ld_is_gold)
2364 AC_MSG_CHECKING(gold linker with split stack support as non default)
2365 # Check to see if default ld is not gold, but gold is
2366 # available and has support for split stack. If gcc was configured
2367 # with gold then no checking is done.
2369 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2371 # For platforms other than powerpc64*, enable as appropriate.
2374 ld_gold=`which ${gcc_cv_ld}.gold`
2375 # Make sure this gold has minimal split stack support
2376 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2377 ld_vers=`$ld_gold --version | sed 1q`
2378 gold_vers=`echo $ld_vers | sed -n \
2379 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2381 # check that the gold version contains the complete split stack support
2382 # on powerpc64 big and little endian
2384 case "$gold_vers" in
2385 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2387 *) gold_non_default=no
2393 if test $gold_non_default = yes; then
2394 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2395 [Define if the gold linker supports split stack and is available as a non-default])
2398 AC_MSG_RESULT($gold_non_default)
2400 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2401 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2402 case "$ORIGINAL_LD_FOR_TARGET" in
2403 ./collect-ld | ./collect-ld$build_exeext) ;;
2404 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2407 AC_MSG_CHECKING(what linker to use)
2408 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2409 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2410 # Single tree build which includes ld. We want to prefer it
2411 # over whatever linker top-level may have detected, since
2412 # we'll use what we're building after installation anyway.
2413 AC_MSG_RESULT(newly built ld)
2415 in_tree_ld_is_elf=no
2416 if (grep 'EMUL = .*elf' ../ld/Makefile \
2417 || grep 'EMUL = .*linux' ../ld/Makefile \
2418 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2419 in_tree_ld_is_elf=yes
2420 elif test "$ld_is_gold" = yes; then
2421 in_tree_ld_is_elf=yes
2423 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
2426 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2427 if test x$gcc_cv_gld_version != x; then
2431 case $gcc_cv_gld_version in
2434 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2437 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2438 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2440 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2441 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2443 AC_MSG_RESULT($gcc_cv_ld)
2445 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2446 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2447 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2450 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2451 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2453 # Figure out what nm we will be using.
2454 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2455 AS_VAR_SET_IF(gcc_cv_nm,, [
2456 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2457 && test -f ../binutils/Makefile \
2458 && test x$build = x$host; then
2459 gcc_cv_nm=../binutils/nm-new$build_exeext
2460 elif test -x nm$build_exeext; then
2461 gcc_cv_nm=./nm$build_exeext
2462 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2463 gcc_cv_nm="$NM_FOR_TARGET"
2465 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2468 AC_MSG_CHECKING(what nm to use)
2469 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2470 # Single tree build which includes binutils.
2471 AC_MSG_RESULT(newly built nm)
2474 AC_MSG_RESULT($gcc_cv_nm)
2478 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2479 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2480 case "$ORIGINAL_NM_FOR_TARGET" in
2481 ./nm | ./nm$build_exeext) ;;
2482 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2486 # Figure out what objdump we will be using.
2487 AS_VAR_SET_IF(gcc_cv_objdump,, [
2488 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2489 && test -f ../binutils/Makefile \
2490 && test x$build = x$host; then
2491 # Single tree build which includes binutils.
2492 gcc_cv_objdump=../binutils/objdump$build_exeext
2493 elif test -x objdump$build_exeext; then
2494 gcc_cv_objdump=./objdump$build_exeext
2495 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2496 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2498 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2501 AC_MSG_CHECKING(what objdump to use)
2502 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2503 # Single tree build which includes binutils.
2504 AC_MSG_RESULT(newly built objdump)
2505 elif test x$gcc_cv_objdump = x; then
2506 AC_MSG_RESULT(not found)
2508 AC_MSG_RESULT($gcc_cv_objdump)
2511 # Figure out what readelf we will be using.
2512 AS_VAR_SET_IF(gcc_cv_readelf,, [
2513 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2514 && test -f ../binutils/Makefile \
2515 && test x$build = x$host; then
2516 # Single tree build which includes binutils.
2517 gcc_cv_readelf=../binutils/readelf$build_exeext
2518 elif test -x readelf$build_exeext; then
2519 gcc_cv_readelf=./readelf$build_exeext
2520 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2521 gcc_cv_readelf="$READELF_FOR_TARGET"
2523 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2526 AC_MSG_CHECKING(what readelf to use)
2527 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2528 # Single tree build which includes binutils.
2529 AC_MSG_RESULT(newly built readelf)
2530 elif test x$gcc_cv_readelf = x; then
2531 AC_MSG_RESULT(not found)
2533 AC_MSG_RESULT($gcc_cv_readelf)
2536 # Figure out what otool we will be using.
2537 AS_VAR_SET_IF(gcc_cv_otool,, [
2538 if test -x otool$build_exeext; then
2539 gcc_cv_otool=./otool$build_exeext
2540 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2541 gcc_cv_otool="$OTOOL_FOR_TARGET"
2543 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2546 AC_MSG_CHECKING(what otool to use)
2547 if test x$gcc_cv_otool = x; then
2548 AC_MSG_RESULT(not found)
2550 AC_MSG_RESULT($gcc_cv_otool)
2553 # Figure out what assembler alignment features are present.
2554 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2558 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2559 [Define if your assembler supports .balign and .p2align.])])
2561 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2564 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2565 [Define if your assembler supports specifying the maximum number
2566 of bytes to skip when using the GAS .p2align command.])])
2568 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2571 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2572 [Define if your assembler supports .literal16.])])
2574 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2576 [conftest_label1: .word 0
2578 conftest_label2: .word 0
2580 [if test x$gcc_cv_nm != x; then
2581 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2582 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2583 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2585 else gcc_cv_as_subsection_m1=yes
2587 rm -f conftest.nm1 conftest.nm2
2589 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2590 [Define if your assembler supports .subsection and .subsection -1 starts
2591 emitting at the beginning of your section.])])
2593 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2596 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2598 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2600 [ .weakref foobar, barfnot],,
2601 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2603 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2606 .NSUBSPA $CODE$,COMDAT],,
2607 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2609 # .hidden needs to be supported in both the assembler and the linker,
2610 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2611 # This is irritatingly difficult to feature test for; we have to check the
2612 # date string after the version number. If we've got an in-tree
2613 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2615 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2618 conftest_s=' .globl foobar,hidden'
2621 conftest_s=' .hidden foobar
2625 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2626 [elf,2,13,0],, [$conftest_s])
2629 # Darwin as has some visibility support, though with a different syntax.
2630 gcc_cv_as_hidden=yes
2634 # gnu_indirect_function type is an extension proposed at
2635 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2636 # selection of function implementation
2637 AC_ARG_ENABLE(gnu-indirect-function,
2638 [AS_HELP_STRING([--enable-gnu-indirect-function],
2639 [enable the use of the @gnu_indirect_function to glibc systems])],
2640 [case $enable_gnu_indirect_function in
2642 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2643 Valid choices are 'yes' and 'no'.]) ;;
2645 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2647 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2648 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2649 [Define if your system supports gnu indirect functions.])
2653 if test $in_tree_ld != yes ; then
2654 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2655 if echo "$ld_ver" | grep GNU > /dev/null; then
2656 if test x"$ld_is_gold" = xyes; then
2657 # GNU gold --version looks like this:
2659 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2661 # We extract the binutils version which is more familiar and specific
2662 # than the gold version.
2663 ld_vers=`echo $ld_ver | sed -n \
2664 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2666 # GNU ld --version looks like this:
2668 # GNU ld (GNU Binutils) 2.21.51.20110225
2669 ld_vers=`echo $ld_ver | sed -n \
2670 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2672 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2673 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2674 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2675 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2679 # Solaris 2 ld -V output looks like this for a regular version:
2681 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2683 # but test versions add stuff at the end:
2685 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2687 # In Solaris 11.4, this was changed to
2689 # ld: Solaris ELF Utilities: 11.4-1.3123
2691 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2692 # numbers can be used in ld.so.1 feature checks even if a different
2693 # linker is configured.
2694 ld_ver=`$gcc_cv_ld -V 2>&1`
2695 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2696 ld_vers=`echo $ld_ver | sed -n \
2697 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2698 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2699 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2707 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2708 [[if test $in_tree_ld = yes ; then
2710 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2711 && test $in_tree_ld_is_elf = yes; then
2712 gcc_cv_ld_hidden=yes
2715 gcc_cv_ld_hidden=yes
2716 if test x"$ld_is_gold" = xyes; then
2718 elif echo "$ld_ver" | grep GNU > /dev/null; then
2720 mmix-knuth-mmixware)
2721 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2725 if test 0"$ld_date" -lt 20020404; then
2726 if test -n "$ld_date"; then
2727 # If there was date string, but was earlier than 2002-04-04, fail
2729 elif test -z "$ld_vers"; then
2730 # If there was no date string nor ld version number, something is wrong
2733 test -z "$ld_vers_patch" && ld_vers_patch=0
2734 if test "$ld_vers_major" -lt 2; then
2736 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2737 gcc_cv_ld_hidden="no"
2738 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2746 gcc_cv_ld_hidden=yes
2749 # Darwin ld has some visibility support.
2750 gcc_cv_ld_hidden=yes
2752 hppa64*-*-hpux* | ia64*-*-hpux*)
2753 gcc_cv_ld_hidden=yes
2756 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2757 # .symbolic was only added in Solaris 9 12/02.
2758 gcc_cv_ld_hidden=yes
2766 libgcc_visibility=no
2767 AC_SUBST(libgcc_visibility)
2768 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2769 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2770 libgcc_visibility=yes
2771 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2772 [Define if your assembler and linker support .hidden.])
2775 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2776 gcc_cv_ld_ro_rw_mix=unknown
2777 if test $in_tree_ld = yes ; then
2778 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2779 && test $in_tree_ld_is_elf = yes; then
2780 gcc_cv_ld_ro_rw_mix=read-write
2782 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2783 echo '.section myfoosect, "a"' > conftest1.s
2784 echo '.section myfoosect, "aw"' > conftest2.s
2785 echo '.byte 1' >> conftest2.s
2786 echo '.section myfoosect, "a"' > conftest3.s
2787 echo '.byte 0' >> conftest3.s
2788 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2789 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2790 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2791 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2792 conftest2.o conftest3.o > /dev/null 2>&1; then
2793 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2794 | sed -e '/myfoosect/!d' -e N`
2795 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2796 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2797 gcc_cv_ld_ro_rw_mix=read-only
2799 gcc_cv_ld_ro_rw_mix=read-write
2804 rm -f conftest.* conftest[123].*
2807 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2808 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2809 [Define if your linker links a mix of read-only
2810 and read-write sections into a read-write section.])
2812 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2814 gcc_AC_INITFINI_ARRAY
2816 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2817 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2825 [[# GAS versions before 2.11 do not support uleb128,
2826 # despite appearing to.
2827 # ??? There exists an elf-specific test that will crash
2828 # the assembler. Perhaps it's better to figure out whether
2829 # arbitrary sections are supported and try the test.
2830 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2831 if echo "$as_ver" | grep GNU > /dev/null; then
2832 as_vers=`echo $as_ver | sed -n \
2833 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2834 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2835 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2836 if test $as_major -eq 2 && test $as_minor -lt 11
2838 else gcc_cv_as_leb128=yes
2841 [AC_DEFINE(HAVE_AS_LEB128, 1,
2842 [Define if your assembler supports .sleb128 and .uleb128.])],
2843 [AC_DEFINE(HAVE_AS_LEB128, 0,
2844 [Define if your assembler supports .sleb128 and .uleb128.])])
2846 # Determine if an .eh_frame section is read-only.
2847 gcc_fn_eh_frame_ro () {
2848 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2849 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2850 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2853 # Check if we have assembler support for unwind directives.
2854 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2861 .cfi_escape 1, 2, 3, 4, 5
2865 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2866 # read-only and read-write sections, we need to make sure that the
2867 # assembler used emits read-write .eh_frame sections.
2868 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2869 gcc_cv_as_cfi_directive=yes
2870 elif test "x$gcc_cv_objdump" = x; then
2871 # No objdump, err on the side of caution.
2872 gcc_cv_as_cfi_directive=no
2874 if test x$gas = xyes; then
2882 sparc*-*-solaris2.*)
2883 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2884 if gcc_fn_eh_frame_ro $as_32_opt \
2885 || gcc_fn_eh_frame_ro $as_64_opt; then
2886 gcc_cv_as_cfi_directive=no
2888 gcc_cv_as_cfi_directive=yes
2891 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2892 # On Solaris/x86, make sure that GCC and assembler agree on using
2893 # read-only .eh_frame sections for 64-bit.
2894 if gcc_fn_eh_frame_ro $as_32_opt; then
2895 gcc_cv_as_cfi_directive=no
2896 elif gcc_fn_eh_frame_ro $as_64_opt; then
2897 gcc_cv_as_cfi_directive=yes
2899 gcc_cv_as_cfi_directive=no
2906 gcc_cv_as_cfi_directive=yes
2909 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2910 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2914 .cfi_adjust_cfa_offset 64
2916 .cfi_adjust_cfa_offset 128
2919 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2920 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2921 gcc_cv_as_cfi_advance_working=yes
2925 # no objdump, err on the side of caution
2926 gcc_cv_as_cfi_advance_working=no
2928 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2929 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2930 [`if test $gcc_cv_as_cfi_directive = yes \
2931 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2932 [Define 0/1 if your assembler supports CFI directives.])
2934 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2935 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2936 gcc_cv_as_cfi_personality_directive, ,,
2939 .cfi_personality 0, symbol
2941 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2942 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
2943 [Define 0/1 if your assembler supports .cfi_personality.])
2945 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2946 gcc_cv_as_cfi_sections_directive, ,,
2948 .cfi_sections .debug_frame, .eh_frame
2952 win32 | pe | cygwin* | mingw32*)
2953 # Need to check that we generated the correct relocation for the
2954 # .debug_frame section. This was fixed for binutils 2.21.
2955 gcc_cv_as_cfi_sections_directive=no
2956 if test "x$gcc_cv_objdump" != x; then
2957 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2958 grep secrel > /dev/null; then
2959 gcc_cv_as_cfi_sections_directive=yes
2964 gcc_cv_as_cfi_sections_directive=yes
2967 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2968 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2969 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
2970 [Define 0/1 if your assembler supports .cfi_sections.])
2972 # GAS versions up to and including 2.11.0 may mis-optimize
2974 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2982 .section .eh_frame,"aw",@progbits
2984 .4byte .LECIE1-.LSCIE1
2998 .4byte .LEFDE1-.LASFDE1
3000 .4byte .LASFDE1-__FRAME_BEGIN__
3008 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3009 cat > conftest.lit <<EOF
3010 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3011 0010 01000000 12000000 18000000 00000000 ................
3012 0020 08000000 04080000 0044 .........D @&t@
3014 cat > conftest.big <<EOF
3015 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3016 0010 00000001 00000012 00000018 00000000 ................
3017 0020 00000008 04000000 0844 .........D @&t@
3019 # If the assembler didn't choke, and we can objdump,
3020 # and we got the correct data, then succeed.
3021 # The text in the here-document typically retains its unix-style line
3022 # endings, while the output of objdump will use host line endings.
3023 # Therefore, use diff -b for the comparisons.
3024 if test x$gcc_cv_objdump != x \
3025 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3026 | tail -3 > conftest.got \
3027 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3028 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3030 gcc_cv_as_eh_frame=yes
3031 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3032 gcc_cv_as_eh_frame=buggy
3034 # Uh oh, what do we do now?
3035 gcc_cv_as_eh_frame=no
3038 if test $gcc_cv_as_eh_frame = buggy; then
3039 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3040 [Define if your assembler mis-optimizes .eh_frame data.])
3043 # Test if the assembler supports the section flag 'e' or #exclude for
3044 # specifying an excluded section.
3045 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3046 [2,22,51], [--fatal-warnings],
3049 if test $gcc_cv_as_section_exclude_e = no; then
3051 # Solaris as uses #exclude instead.
3055 conftest_s='.section "foo1", #exclude'
3057 i?86-*-solaris2* | x86_64-*-solaris2*)
3058 conftest_s='.section foo1, #exclude'
3063 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3067 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3068 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3069 [Define if your assembler supports specifying the exclude section flag.])
3071 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3072 [elf,2,12,0], [--fatal-warnings],
3073 [.section .rodata.str, "aMS", @progbits, 1])
3074 if test $gcc_cv_as_shf_merge = no; then
3075 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3076 [elf,2,12,0], [--fatal-warnings],
3077 [.section .rodata.str, "aMS", %progbits, 1])
3079 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3080 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3081 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3083 gcc_cv_ld_aligned_shf_merge=yes
3085 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3087 sparc*-*-solaris2.11*)
3088 if test x"$gnu_ld" = xno \
3089 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3090 gcc_cv_ld_aligned_shf_merge=no
3094 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3095 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3096 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3098 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3099 [.stabs "gcc2_compiled.",60,0,0,0],,
3100 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3101 [Define if your assembler supports .stabs.])])
3103 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3104 gcc_cv_as_comdat_group,
3105 [elf,2,16,0], [--fatal-warnings],
3106 [.section .text,"axG",@progbits,.foo,comdat])
3107 if test $gcc_cv_as_comdat_group = yes; then
3108 gcc_cv_as_comdat_group_percent=no
3109 gcc_cv_as_comdat_group_group=no
3111 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3112 gcc_cv_as_comdat_group_percent,
3113 [elf,2,16,0], [--fatal-warnings],
3114 [.section .text,"axG",%progbits,.foo,comdat])
3115 if test $gcc_cv_as_comdat_group_percent = yes; then
3116 gcc_cv_as_comdat_group_group=no
3119 # Sun as uses a completely different syntax.
3124 .group foo,".text%foo",#comdat
3125 .section ".text%foo", #alloc,#execinstr,#progbits
3130 i?86-*-solaris2* | x86_64-*-solaris2*)
3132 .group foo,.text%foo,#comdat
3133 .section .text%foo, "ax", @progbits
3139 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3140 gcc_cv_as_comdat_group_group,
3144 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3145 gcc_cv_as_comdat_group_group=no
3149 if test x"$ld_is_gold" = xyes; then
3151 elif test $in_tree_ld = yes ; then
3153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3154 && test $in_tree_ld_is_elf = yes; then
3157 elif echo "$ld_ver" | grep GNU > /dev/null; then
3159 if test 0"$ld_date" -lt 20050308; then
3160 if test -n "$ld_date"; then
3161 # If there was date string, but was earlier than 2005-03-08, fail
3163 elif test "$ld_vers_major" -lt 2; then
3165 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3172 *-*-solaris2.1[1-9]*)
3174 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3175 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3178 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3179 # least ld version 1.2267.
3180 if test "$ld_vers_major" -gt 1; then
3182 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3184 elif test "$ld_vers_minor" -ge 2267; then
3189 # Assume linkers other than GNU ld don't support COMDAT group.
3195 # Allow overriding the automatic COMDAT group tests above.
3196 AC_ARG_ENABLE(comdat,
3197 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3198 [comdat_group="$enable_comdat"])
3199 if test $comdat_group = no; then
3200 gcc_cv_as_comdat_group=no
3201 gcc_cv_as_comdat_group_percent=no
3202 gcc_cv_as_comdat_group_group=no
3204 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3205 [`if test $gcc_cv_as_comdat_group = yes \
3206 || test $gcc_cv_as_comdat_group_percent = yes \
3207 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3208 [Define 0/1 if your assembler and linker support COMDAT groups.])
3210 # Restrict this test to Solaris/x86: other targets define this statically.
3212 i?86-*-solaris2* | x86_64-*-solaris2*)
3213 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3214 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3218 # Full support for hidden thunks in linkonce sections only appeared in
3219 # Solaris 11/OpenSolaris.
3220 *-*-solaris2.1[[1-9]]*)
3228 AC_MSG_RESULT($hidden_linkonce)
3229 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3230 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3231 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3235 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3240 .loc 1 1 0 is_stmt 1],,
3241 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3242 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3244 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3245 gcc_cv_as_discriminator,
3249 .loc 1 1 0 discriminator 1],,
3250 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3251 [Define if your assembler supports the .loc discriminator sub-directive.])])
3253 # Thread-local storage - the check is heavily parameterized.
3262 .section ".tdata","awT",@progbits
3265 ldq $27,__tls_get_addr($29) !literal!1
3266 lda $16,foo($29) !tlsgd!1
3267 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3268 ldq $27,__tls_get_addr($29) !literal!2
3269 lda $16,foo($29) !tlsldm!2
3270 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3271 ldq $1,foo($29) !gotdtprel
3272 ldah $2,foo($29) !dtprelhi
3273 lda $3,foo($2) !dtprello
3274 lda $4,foo($29) !dtprel
3275 ldq $1,foo($29) !gottprel
3276 ldah $2,foo($29) !tprelhi
3277 lda $3,foo($2) !tprello
3278 lda $4,foo($29) !tprel'
3281 tls_as_opt=--fatal-warnings
3285 add_s r0,r0, @foo@tpoff'
3289 cris-*-*|crisv32-*-*)
3291 .section ".tdata","awT",@progbits
3298 tls_as_opt=--fatal-warnings
3302 .section ".tdata","awT",@progbits
3314 .section ".tdata","awT",@progbits
3318 addil LT%foo-$tls_gdidx$,gp
3319 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3322 addil LT%foo-$tls_ldidx$,gp
3324 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3325 addil LR%foo-$tls_dtpoff$,%ret0
3326 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3328 addil LT%foo-$tls_ieoff$,gp
3329 ldw RT%foo-$tls_ieoff$(%r1),%t2
3332 addil LR%foo-$tls_leoff$,%t1
3333 ldo RR%foo-$tls_leoff$(%r1),%t2'
3336 tls_as_opt=--fatal-warnings
3340 .section ".tdata","awT",%progbits
3351 i[34567]86-*-* | x86_64-*-*)
3353 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3360 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3362 .section .tdata,"awt",@progbits'
3367 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3368 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3372 .section ".tdata","awT",@progbits'
3376 tls_as_opt="--fatal-warnings"
3380 conftest_s="$conftest_s
3384 leal foo@tlsgd(,%ebx,1), %eax
3385 leal foo@tlsldm(%ebx), %eax
3386 leal foo@dtpoff(%eax), %edx
3387 movl foo@gottpoff(%ebx), %eax
3388 subl foo@gottpoff(%ebx), %eax
3389 addl foo@gotntpoff(%ebx), %eax
3390 movl foo@indntpoff, %eax
3391 movl \$foo@tpoff, %eax
3392 subl \$foo@tpoff, %eax
3393 leal foo@ntpoff(%ecx), %eax"
3396 if test x$on_solaris = xyes; then
3398 yes) tls_as_opt="$tls_as_opt --64" ;;
3399 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3402 conftest_s="$conftest_s
3406 leaq foo@tlsgd(%rip), %rdi
3407 leaq foo@tlsld(%rip), %rdi
3408 leaq foo@dtpoff(%rax), %rdx
3409 movq foo@gottpoff(%rip), %rax
3410 movq \$foo@tpoff, %rax"
3416 .section ".tdata","awT",@progbits
3419 addl r16 = @ltoff(@dtpmod(foo#)), gp
3420 addl r17 = @ltoff(@dtprel(foo#)), gp
3421 addl r18 = @ltoff(@tprel(foo#)), gp
3422 addl r19 = @dtprel(foo#), gp
3423 adds r21 = @dtprel(foo#), r13
3424 movl r23 = @dtprel(foo#)
3425 addl r20 = @tprel(foo#), gp
3426 adds r22 = @tprel(foo#), r13
3427 movl r24 = @tprel(foo#)'
3430 tls_as_opt=--fatal-warnings
3434 .section .tdata,"awT",@progbits
3438 addik r5,r20,x@TLSGD
3439 addik r5,r20,x@TLSLDM'
3442 tls_as_opt='--fatal-warnings'
3446 .section .tdata,"awT",@progbits
3450 addiu $4, $28, %tlsgd(x)
3451 addiu $4, $28, %tlsldm(x)
3452 lui $4, %dtprel_hi(x)
3453 addiu $4, $4, %dtprel_lo(x)
3454 lw $4, %gottprel(x)($28)
3455 lui $4, %tprel_hi(x)
3456 addiu $4, $4, %tprel_lo(x)'
3459 tls_as_opt='-32 --fatal-warnings'
3463 .section .tdata,"awT",@progbits
3468 move.l x@TLSGD(%a5),%a0
3469 move.l x@TLSLDM(%a5),%a0
3470 move.l x@TLSLDO(%a5),%a0
3471 move.l x@TLSIE(%a5),%a0
3472 move.l x@TLSLE(%a5),%a0'
3475 tls_as_opt='--fatal-warnings'
3479 .section ".tdata","awT",@progbits'
3482 tls_as_opt="--fatal-warnings"
3486 .section ".tdata","awT",%progbits
3490 add x0, x0, #:tlsgd_lo12:x
3495 tls_as_opt='--fatal-warnings'
3499 .section ".tdata","awT",@progbits
3502 l.movhi r3, tpoffha(foo)
3504 l.lwz r4, tpofflo(foo)(r3)'
3507 tls_as_opt=--fatal-warnings
3511 .extern __get_tpointer
3529 .section ".tdata","awT",@progbits
3537 addi 3,2,ld0@got@tlsgd
3543 addi 3,2,x1@got@tlsld
3549 addis 9,3,x2@dtprel@ha
3550 addi 9,9,x2@dtprel@l
3553 ld 9,x3@got@dtprel(2)
3559 tls_as_opt="-a64 --fatal-warnings"
3563 .section ".tdata","awT",@progbits
3571 addi 3,31,ld0@got@tlsgd
3573 addi 3,31,x1@got@tlsld
3576 addis 9,3,x2@dtprel@ha
3577 addi 9,9,x2@dtprel@l
3578 lwz 9,x3@got@tprel(31)
3581 addis 9,2,x2@tprel@ha
3582 addi 9,9,x2@tprel@l'
3585 tls_as_opt="-a32 --fatal-warnings"
3589 .section .tdata,"awT",@progbits
3593 call __tls_get_addr'
3596 tls_as_opt='--fatal-warnings'
3600 .section ".tdata","awT",@progbits
3609 l %r1,foo@GOTNTPOFF(%r12)
3610 l %r1,0(%r1):tls_load:foo
3611 bas %r14,0(%r1,%r13):tls_gdcall:foo
3612 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3615 tls_as_opt="-m31 --fatal-warnings"
3619 .section ".tdata","awT",@progbits
3627 lg %r1,foo@GOTNTPOFF(%r12)
3628 larl %r1,foo@INDNTPOFF
3629 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3630 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3633 tls_as_opt="-m64 -Aesame --fatal-warnings"
3635 sh-*-* | sh[123456789lbe]*-*-*)
3637 .section ".tdata","awT",@progbits
3647 tls_as_opt=--fatal-warnings
3651 sparc*-sun-solaris2.*)
3658 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3660 .section ".tdata",#alloc,#write,#tls'
3665 .section ".tdata","awT",@progbits'
3668 tls_as_opt="-32 --fatal-warnings"
3670 conftest_s="$conftest_s
3673 sethi %tgd_hi22(foo), %o0
3674 add %o0, %tgd_lo10(foo), %o1
3675 add %l7, %o1, %o0, %tgd_add(foo)
3676 call __tls_get_addr, %tgd_call(foo)
3677 sethi %tldm_hi22(foo), %l1
3678 add %l1, %tldm_lo10(foo), %l2
3679 add %l7, %l2, %o0, %tldm_add(foo)
3680 call __tls_get_addr, %tldm_call(foo)
3681 sethi %tldo_hix22(foo), %l3
3682 xor %l3, %tldo_lox10(foo), %l4
3683 add %o0, %l4, %l5, %tldo_add(foo)
3684 sethi %tie_hi22(foo), %o3
3685 add %o3, %tie_lo10(foo), %o3
3686 ld [%l7 + %o3], %o2, %tie_ld(foo)
3687 add %g7, %o2, %o4, %tie_add(foo)
3688 sethi %tle_hix22(foo), %l1
3689 xor %l1, %tle_lox10(foo), %o5
3690 ld [%g7 + %o5], %o1"
3694 .section ".tdata","awT",@progbits
3697 addli r0, zero, tls_gd(foo)
3698 auli r0, zero, tls_gd_ha16(foo)
3699 addli r0, r0, tls_gd_lo16(foo)
3701 addli r0, zero, tls_ie(foo)
3702 auli r0, r0, tls_ie_ha16(foo)
3703 addli r0, r0, tls_ie_lo16(foo)'
3706 tls_as_opt="--fatal-warnings"
3710 .section ".tdata","awT",@progbits
3713 shl16insli r0, zero, hw0_last_tls_gd(foo)
3714 shl16insli r0, zero, hw1_last_tls_gd(foo)
3715 shl16insli r0, r0, hw0_tls_gd(foo)
3717 shl16insli r0, zero, hw1_last_tls_ie(foo)
3718 shl16insli r0, r0, hw0_tls_ie(foo)'
3721 tls_as_opt="--fatal-warnings"
3725 .section ".tdata","awT",@progbits
3728 movi a8, foo@TLSFUNC
3729 movi a10, foo@TLSARG
3730 callx8.tls a8, foo@TLSCALL'
3737 if test "x$enable_tls" = xno ; then
3738 : # TLS explicitly disabled.
3739 elif test "x$enable_tls" = xyes ; then
3740 set_have_as_tls=yes # TLS explicitly enabled.
3741 elif test -z "$tls_first_major"; then
3742 : # If we don't have a check, assume no support.
3744 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3745 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3746 [set_have_as_tls=yes])
3748 if test $set_have_as_tls = yes ; then
3749 AC_DEFINE(HAVE_AS_TLS, 1,
3750 [Define if your assembler and linker support thread-local storage.])
3753 # Target-specific assembler checks.
3755 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3756 gcc_cv_ld_static_dynamic=no
3757 gcc_cv_ld_static_option='-Bstatic'
3758 gcc_cv_ld_dynamic_option='-Bdynamic'
3759 if test $in_tree_ld = yes ; then
3760 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3761 gcc_cv_ld_static_dynamic=yes
3763 elif test x$gcc_cv_ld != x; then
3764 # Check if linker supports -Bstatic/-Bdynamic option
3765 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3766 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3767 gcc_cv_ld_static_dynamic=yes
3770 # AIX ld uses -b flags
3771 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3772 gcc_cv_ld_static_dynamic=yes
3773 gcc_cv_ld_static_option="-bstatic"
3774 gcc_cv_ld_dynamic_option="-bdynamic"
3776 # HP-UX ld uses -a flags to select between shared and archive.
3778 if test x"$gnu_ld" = xno; then
3779 gcc_cv_ld_static_dynamic=yes
3780 gcc_cv_ld_static_option="-aarchive_shared"
3781 gcc_cv_ld_dynamic_option="-adefault"
3784 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3786 gcc_cv_ld_static_dynamic=yes
3791 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3792 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3793 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3794 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3795 [Define to the linker option to disable use of shared objects.])
3796 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3797 [Define to the linker option to enable use of shared objects.])
3799 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3801 AC_MSG_CHECKING(linker --version-script option)
3802 gcc_cv_ld_version_script=no
3803 ld_version_script_option=''
3804 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3805 gcc_cv_ld_version_script=yes
3806 ld_version_script_option='--version-script'
3807 elif test x$gcc_cv_ld != x; then
3809 # Solaris 2 ld always supports -M. It also supports a subset of
3810 # --version-script since Solaris 11.4, but requires
3811 # -z gnu-version-script-compat to activate.
3813 gcc_cv_ld_version_script=yes
3814 ld_version_script_option='-M'
3818 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3819 AC_MSG_RESULT($gcc_cv_ld_version_script)
3820 AC_SUBST(ld_version_script_option)
3822 AC_MSG_CHECKING(linker soname option)
3824 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3825 gcc_cv_ld_soname=yes
3826 ld_soname_option='-soname'
3827 elif test x$gcc_cv_ld != x; then
3830 gcc_cv_ld_soname=yes
3831 ld_soname_option='-install_name'
3833 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3834 # ld compatiblity since some Solaris 10 update.
3836 gcc_cv_ld_soname=yes
3837 ld_soname_option='-h'
3841 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3842 AC_MSG_RESULT($gcc_cv_ld_soname)
3843 AC_SUBST(ld_soname_option)
3845 if test x"$demangler_in_ld" = xyes; then
3846 AC_MSG_CHECKING(linker --demangle support)
3847 gcc_cv_ld_demangle=no
3848 if test $in_tree_ld = yes; then
3849 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3850 gcc_cv_ld_demangle=yes
3852 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3853 # Check if the GNU linker supports --demangle option
3854 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3855 gcc_cv_ld_demangle=yes
3858 if test x"$gcc_cv_ld_demangle" = xyes; then
3859 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3860 [Define if your linker supports --demangle option.])
3862 AC_MSG_RESULT($gcc_cv_ld_demangle)
3865 AC_MSG_CHECKING(linker plugin support)
3867 if test -f liblto_plugin.la; then
3868 save_ld_ver="$ld_ver"
3869 save_ld_vers_major="$ld_vers_major"
3870 save_ld_vers_minor="$ld_vers_minor"
3871 save_ld_is_gold="$ld_is_gold"
3875 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3877 # FIXME: ld_is_gold?
3878 ld_vers_major="$gcc_cv_gld_major_version"
3879 ld_vers_minor="$gcc_cv_gld_minor_version"
3881 # Determine plugin linker version.
3882 # FIXME: Partial duplicate from above, generalize.
3884 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3885 if echo "$ld_ver" | grep GNU > /dev/null; then
3886 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3888 ld_vers=`echo $ld_ver | sed -n \
3889 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3891 ld_vers=`echo $ld_ver | sed -n \
3892 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3894 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3895 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3900 # Determine plugin support.
3901 if echo "$ld_ver" | grep GNU > /dev/null; then
3902 # Require GNU ld or gold 2.21+ for plugin support by default.
3903 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3905 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3906 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3911 ld_ver="$save_ld_ver"
3912 ld_vers_major="$save_ld_vers_major"
3913 ld_vers_minor="$save_ld_vers_minor"
3914 ld_is_gold="$save_ld_is_gold"
3916 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3917 [Define to the level of your linker's plugin support.])
3918 AC_MSG_RESULT($gcc_cv_lto_plugin)
3920 # Target OS-specific assembler checks.
3922 case "$target_os" in
3924 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3925 gcc_cv_as_mmacosx_version_min,,
3926 [-mmacosx-version-min=10.1], [.text],,
3927 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3928 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3932 # Target CPU-specific assembler checks.
3936 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3937 [-mabi=lp64], [.text],,,)
3938 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3939 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3940 [Define if your assembler supports the -mabi option.])
3942 if test x$with_abi = xilp32; then
3943 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3944 Upgrade the Assembler.])
3946 if test x"$with_multilib_list" = xdefault; then
3947 TM_MULTILIB_CONFIG=lp64
3949 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3950 for aarch64_multilib in ${aarch64_multilibs}; do
3951 case ${aarch64_multilib} in
3953 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3954 Upgrade the Assembler.])
3962 # Check if we have binutils support for relocations types needed by -fpic
3963 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3966 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3967 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3968 [Define if your assembler supports relocs needed by -fpic.])])
3969 # Enable Branch Target Identification Mechanism and Return Address
3970 # Signing by default.
3971 AC_ARG_ENABLE(standard-branch-protection,
3973 AS_HELP_STRING([--enable-standard-branch-protection],
3974 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
3975 AS_HELP_STRING([--disable-standard-branch-protection],
3976 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
3981 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
3986 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
3987 Valid choices are 'yes' and 'no'.])
3992 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3993 AC_ARG_ENABLE(fix-cortex-a53-835769,
3995 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3996 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3997 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3998 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4003 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4008 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4009 Valid choices are 'yes' and 'no'.])
4015 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4016 AC_ARG_ENABLE(fix-cortex-a53-843419,
4018 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4019 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4020 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4021 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4026 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4031 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4032 Valid choices are 'yes' and 'no'.])
4040 # All TARGET_ABI_OSF targets.
4041 alpha*-*-linux* | alpha*-*-*bsd*)
4042 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4043 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4046 extbl $3, $2, $3 !lituse_bytoff!1
4047 ldq $2, a($29) !literal!1
4048 ldq $4, b($29) !literal!2
4049 ldq_u $3, 0($2) !lituse_base!1
4050 ldq $27, f($29) !literal!5
4051 jsr $26, ($27), f !lituse_jsr!5
4052 ldah $29, 0($26) !gpdisp!3
4053 lda $0, c($29) !gprel
4054 ldah $1, d($29) !gprelhigh
4055 lda $1, d($1) !gprellow
4056 lda $29, 0($29) !gpdisp!3],,
4057 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4058 [Define if your assembler supports explicit relocations.])])
4059 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4060 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4063 ldq $27, a($29) !literal!1
4064 jsr $26, ($27), a !lituse_jsrdirect!1],,
4065 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4066 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4070 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4071 [--mlink-relax], [.text],,
4072 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4073 [Define if your avr assembler supports --mlink-relax option.])])
4075 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4077 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4078 [Define if your avr assembler supports -mrmw option.])])
4080 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4081 gcc_cv_as_avr_mgccisr,,
4087 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4088 [Define if your avr assembler supports -mgcc-isr option.])])
4090 # Check how default linker description file implements .rodata for
4091 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4092 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4093 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4094 cat > conftest.s <<EOF
4095 .section .rodata,"a",@progbits
4097 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4102 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4103 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4104 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4105 if test -s conftest.nm
4107 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4109 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4110 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4112 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4113 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4114 cat conftest.nm >&AS_MESSAGE_LOG_FD
4115 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4116 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4119 AC_MSG_RESULT(test failed)
4120 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4121 cat conftest.s >&AS_MESSAGE_LOG_FD
4122 AC_MSG_WARN([[see `config.log' for details]])
4124 rm -f conftest.s conftest.o conftest.elf conftest.nm
4128 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4129 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4130 [-no-mul-bug-abort], [.text],,
4131 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4132 [Define if your assembler supports the -no-mul-bug-abort option.])])
4136 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4138 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4139 [Define if your assembler supports -relax option.])])
4141 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4142 gcc_cv_as_sparc_gotdata_op,,
4149 sethi %gdop_hix22(foo), %g1
4150 xor %g1, %gdop_lox10(foo), %g1
4151 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4152 [if test x$gcc_cv_ld != x \
4153 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4154 if test x$gcc_cv_objdump != x; then
4155 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4156 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4157 gcc_cv_as_sparc_gotdata_op=no
4159 gcc_cv_as_sparc_gotdata_op=yes
4164 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4165 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4167 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4168 gcc_cv_as_sparc_ua_pcrel,,
4176 .uaword %r_disp32(foo)],
4177 [if test x$gcc_cv_ld != x \
4178 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4179 gcc_cv_as_sparc_ua_pcrel=yes
4182 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4183 [Define if your assembler and linker support unaligned PC relative relocs.])
4185 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4186 gcc_cv_as_sparc_ua_pcrel_hidden,,
4191 .uaword %r_disp32(foo)
4192 .byte 0x32, 0x33, 0x34
4197 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4198 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4199 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4200 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4201 if $gcc_cv_objdump -R conftest 2> /dev/null \
4202 | grep 'DISP32' > /dev/null 2>&1; then
4205 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4209 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4210 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4211 ]) # unaligned pcrel relocs
4213 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4214 gcc_cv_as_sparc_offsetable_lo10,,
4217 or %g1, %lo(ab) + 12, %g1
4218 or %g1, %lo(ab + 12), %g1],
4219 [if test x$gcc_cv_objdump != x \
4220 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4221 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4222 gcc_cv_as_sparc_offsetable_lo10=yes
4224 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4225 [Define if your assembler supports offsetable %lo().])])
4227 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4228 gcc_cv_as_sparc_fmaf,,
4231 .register %g2, #scratch
4232 .register %g3, #scratch
4234 fmaddd %f0, %f2, %f4, %f6
4235 addxccc %g1, %g2, %g3
4236 fsrl32 %f2, %f4, %f8
4237 fnaddd %f10, %f12, %f14],,
4238 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4239 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4241 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4242 gcc_cv_as_sparc_sparc4,,
4245 .register %g2, #scratch
4246 .register %g3, #scratch
4249 1: cwbneg %g2, %g3, 1f
4252 aes_kexpand0 %f4, %f6, %f8
4253 des_round %f38, %f40, %f42, %f44
4254 camellia_f %f54, %f56, %f58, %f60
4255 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4256 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4257 [Define if your assembler supports SPARC4 instructions.])])
4259 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4260 gcc_cv_as_sparc_sparc5,,
4263 .register %g2, #scratch
4264 .register %g3, #scratch
4267 fpadd8 %f0, %f2, %f4],,
4268 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4269 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4271 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4272 gcc_cv_as_sparc_sparc6,,
4275 .register %g2, #scratch
4276 .register %g3, #scratch
4279 fpsll64x %f0, %f2, %f4],,
4280 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4281 [Define if your assembler supports SPARC6 instructions.])])
4283 gcc_GAS_CHECK_FEATURE([LEON instructions],
4284 gcc_cv_as_sparc_leon,,
4287 .register %g2, #scratch
4288 .register %g3, #scratch
4292 casa [[%g2]] 0xb, %g3, %g1],,
4293 [AC_DEFINE(HAVE_AS_LEON, 1,
4294 [Define if your assembler supports LEON instructions.])])
4298 i[34567]86-*-* | x86_64-*-*)
4302 # Full C++ conformance when using a shared libstdc++-v3 requires some
4303 # support from the Cygwin DLL, which in more recent versions exports
4304 # wrappers to aid in interposing and redirecting operators new, delete,
4305 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4306 # are configuring for a version of Cygwin that exports the wrappers.
4307 if test x$host = x$target && test x$host_cpu = xi686; then
4308 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4310 # Can't check presence of libc functions during cross-compile, so
4311 # we just have to assume we're building for an up-to-date target.
4312 gcc_ac_cygwin_dll_wrappers=yes
4314 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4315 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4316 [Define if you want to generate code by default that assumes that the
4317 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4320 cygwin* | pe | mingw32*)
4321 # Recent binutils allows the three-operand form of ".comm" on PE. This
4322 # definition is used unconditionally to initialise the default state of
4323 # the target option variable that governs usage of the feature.
4324 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4325 [2,19,52],,[.comm foo,1,32])
4326 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4327 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4328 [Define if your assembler supports specifying the alignment
4329 of objects allocated using the GAS .comm command.])
4330 # Used for DWARF 2 in PE
4331 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4332 gcc_cv_as_ix86_pe_secrel32,
4338 [if test x$gcc_cv_ld != x \
4339 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4340 gcc_cv_as_ix86_pe_secrel32=yes
4343 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4344 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4345 # Test if the assembler supports the extended form of the .section
4346 # directive that specifies section alignment. LTO support uses this,
4347 # but normally only after installation, so we warn but don't fail the
4348 # configure if LTO is enabled but the assembler does not support it.
4349 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4350 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4351 if test x$gcc_cv_as_section_has_align != xyes; then
4352 case ",$enable_languages," in
4354 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4361 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4362 [-xbrace_comment=no], [.text],,
4363 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4364 [Define if your assembler supports -xbrace_comment option.])])
4366 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4367 gcc_cv_as_ix86_filds,,,
4368 [filds (%ebp); fists (%ebp)],,
4369 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4370 [Define if your assembler uses filds and fists mnemonics.])])
4372 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4373 gcc_cv_as_ix86_fildq,,,
4374 [fildq (%ebp); fistpq (%ebp)],,
4375 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4376 [Define if your assembler uses fildq and fistq mnemonics.])])
4378 gcc_GAS_CHECK_FEATURE([cmov syntax],
4379 gcc_cv_as_ix86_cmov_sun_syntax,,,
4380 [cmovl.l %edx, %eax],,
4381 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4382 [Define if your assembler supports the Sun syntax for cmov.])])
4384 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4385 gcc_cv_as_ix86_ffreep,,,
4387 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4388 [Define if your assembler supports the ffreep mnemonic.])])
4390 gcc_GAS_CHECK_FEATURE([.quad directive],
4391 gcc_cv_as_ix86_quad,,,
4393 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4394 [Define if your assembler supports the .quad directive.])])
4396 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4397 gcc_cv_as_ix86_sahf,,,
4400 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4401 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4403 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4404 gcc_cv_as_ix86_interunit_movq,,,
4408 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4409 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4410 [Define if your assembler supports interunit movq mnemonic.])
4412 gcc_GAS_CHECK_FEATURE([hle prefixes],
4413 gcc_cv_as_ix86_hle,,,
4414 [lock xacquire cmpxchg %esi, (%ecx)],,
4415 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4416 [Define if your assembler supports HLE prefixes.])])
4418 gcc_GAS_CHECK_FEATURE([swap suffix],
4419 gcc_cv_as_ix86_swap,,,
4420 [movl.s %esp, %ebp],,
4421 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4422 [Define if your assembler supports the swap suffix.])])
4424 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4425 gcc_cv_as_ix86_diff_sect_delta,,,
4433 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4434 [Define if your assembler supports the subtraction of symbols in different sections.])])
4436 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4437 gcc_cv_as_ix86_rep_lock_prefix,,,
4443 lock addl %edi, (%eax,%esi)
4444 lock orl $0, (%esp)],,
4445 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4446 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4448 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4449 gcc_cv_as_ix86_ud2,,,
4451 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4452 [Define if your assembler supports the 'ud2' mnemonic.])])
4454 # Enforce 32-bit output with gas and gld.
4455 if test x$gas = xyes; then
4456 as_ix86_gas_32_opt="--32"
4458 if echo "$ld_ver" | grep GNU > /dev/null; then
4459 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4460 ld_ix86_gld_32_opt="-melf_i386_sol2"
4462 ld_ix86_gld_32_opt="-melf_i386"
4466 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4467 gcc_cv_as_ix86_tlsgdplt,,
4468 [$as_ix86_gas_32_opt],
4469 [call tls_gd@tlsgdplt],
4470 [if test x$gcc_cv_ld != x \
4471 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4472 gcc_cv_as_ix86_tlsgdplt=yes
4475 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4476 [Define if your assembler and linker support @tlsgdplt.])])
4479 .section .tdata,"aw'$tls_section_flag'",@progbits
4481 .section .text,"ax",@progbits
4482 call tls_ld@tlsldmplt'
4484 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4485 gcc_cv_as_ix86_tlsldmplt,,
4486 [$as_ix86_gas_32_opt],
4488 [if test x$gcc_cv_ld != x \
4489 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4490 gcc_cv_as_ix86_tlsldmplt=yes
4493 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4494 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4495 [Define to 1 if your assembler and linker support @tlsldmplt.])
4498 .section .text,"ax",@progbits
4500 .type _start, @function
4502 leal value@tlsldm(%ebx), %eax
4503 call ___tls_get_addr@plt
4505 .section .tdata,"aw'$tls_section_flag'",@progbits
4506 .type value, @object
4508 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4509 gcc_cv_as_ix86_tlsldm,,
4510 [$as_ix86_gas_32_opt],
4512 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4513 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4514 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4515 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4516 gcc_cv_as_ix86_tlsldm=yes
4520 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4521 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4522 [Define to 1 if your assembler and linker support @tlsldm.])
4533 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4534 gcc_cv_as_ix86_got32x,,
4535 [$as_ix86_gas_32_opt],
4537 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4538 && test x$gcc_cv_readelf != x \
4539 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4540 | grep R_386_GOT32X > /dev/null 2>&1 \
4541 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4542 if $gcc_cv_objdump -dw conftest 2>&1 \
4543 | grep 0xffffff > /dev/null 2>&1; then
4544 gcc_cv_as_ix86_got32x=no
4546 gcc_cv_as_ix86_got32x=yes
4550 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4551 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4552 [Define 0/1 if your assembler and linker support @GOT.])
4554 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4555 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4556 [$as_ix86_gas_32_opt],
4562 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4563 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4564 [Define true if the assembler supports '.long foo@GOTOFF'.])
4567 .section .text,"ax",@progbits
4569 .type _start, @function
4571 leal ld@tlsldm(%ecx), %eax
4572 call *___tls_get_addr@GOT(%ecx)
4573 leal gd@tlsgd(%ecx), %eax
4574 call *___tls_get_addr@GOT(%ecx)
4576 .section .tdata,"aw'$tls_section_flag'",@progbits
4584 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4585 gcc_cv_as_ix86_tls_get_addr_via_got,,
4586 [$as_ix86_gas_32_opt],
4588 [if test x$gcc_cv_ld != x \
4589 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4590 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4593 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4594 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4595 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4599 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4600 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4602 addl r15 = @ltoffx(x#), gp
4604 ld8.mov r16 = [[r15]], x#
4606 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4607 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4615 gcc_GAS_CHECK_FEATURE([.machine directive support],
4616 gcc_cv_as_machine_directive,,,
4617 [ .machine ppc7400])
4618 if test x$gcc_cv_as_machine_directive != xyes; then
4619 echo "*** This target requires an assembler supporting \".machine\"" >&2
4620 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4621 test x$build = x$target && exit 1
4627 *-*-aix*) conftest_s=' .machine "pwr5"
4630 *-*-darwin*) conftest_s=' .text
4632 *) conftest_s=' .machine power4
4637 gcc_GAS_CHECK_FEATURE([mfcr field support],
4638 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4640 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4641 [Define if your assembler supports mfcr field.])])
4644 *-*-aix*) conftest_s=' .csect .text[[PR]]
4646 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4650 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4651 *) conftest_s=' .text
4653 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4656 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4657 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4659 [AC_DEFINE(HAVE_AS_REL16, 1,
4660 [Define if your assembler supports R_PPC_REL16 relocs.])])
4663 *-*-aix*) conftest_s=' .machine "pwr7"
4666 *) conftest_s=' .machine power7
4671 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4672 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4674 [AC_DEFINE(HAVE_AS_VSX, 1,
4675 [Define if your assembler supports VSX instructions.])])
4677 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4678 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4679 [.gnu_attribute 4,1],,
4680 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4681 [Define if your assembler supports .gnu_attribute.])])
4683 gcc_GAS_CHECK_FEATURE([tls marker support],
4684 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4685 [ bl __tls_get_addr(x@tlsgd)],,
4686 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4687 [Define if your assembler supports arg info for __tls_get_addr.])])
4689 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4690 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4691 [ .reloc .,R_PPC64_ENTRY; nop],,
4692 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4693 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4695 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4696 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4697 [ .reloc .,R_PPC_PLTSEQ; nop],,
4698 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4699 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4703 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4704 gcc_cv_as_aix_ref, [2,21,0],,
4705 [ .csect stuff[[rw]]
4711 [AC_DEFINE(HAVE_AS_REF, 1,
4712 [Define if your assembler supports .ref])])
4714 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4715 gcc_cv_as_aix_dwloc, [2,21,0],,
4720 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4721 [Define if your assembler supports AIX debug frame section label reference.])])
4727 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4728 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4729 [ lw $4,%gp_rel(foo)($4)],,
4730 [if test x$target_cpu_default = x
4731 then target_cpu_default=MASK_EXPLICIT_RELOCS
4732 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4735 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4736 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4737 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4738 [Define if the assembler understands -mno-shared.])])
4740 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4741 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4742 [.gnu_attribute 4,1],,
4743 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4744 [Define if your assembler supports .gnu_attribute.])])
4746 gcc_GAS_CHECK_FEATURE([.module support],
4747 gcc_cv_as_mips_dot_module,,[-32],
4750 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4751 [Define if your assembler supports .module.])])
4752 if test x$gcc_cv_as_mips_dot_module = xno \
4753 && test x$with_fp_32 != x; then
4755 [Requesting --with-fp-32= requires assembler support for .module.])
4758 gcc_GAS_CHECK_FEATURE([.micromips support],
4759 gcc_cv_as_micromips_support,,[--fatal-warnings],
4761 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4762 [Define if your assembler supports the .set micromips directive])])
4764 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4765 gcc_cv_as_mips_dtprelword, [2,18,0],,
4766 [.section .tdata,"awT",@progbits
4770 .dtprelword x+0x8000],,
4771 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4772 [Define if your assembler supports .dtprelword.])])
4774 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4775 gcc_cv_as_mips_dspr1_mult,,,
4785 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4786 [Define if your assembler supports DSPR1 mult.])])
4788 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4789 gcc_cv_as_ld_jalr_reloc=no
4790 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4791 if test $in_tree_ld = yes ; then
4792 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4793 && test $in_tree_ld_is_elf = yes; then
4794 gcc_cv_as_ld_jalr_reloc=yes
4796 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4797 echo ' .ent x' > conftest.s
4798 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4799 echo ' lw $25,%call16(y)($28)' >> conftest.s
4800 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4801 echo '1: jalr $25' >> conftest.s
4802 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4803 echo '1: jalr $25' >> conftest.s
4804 echo ' .end x' >> conftest.s
4805 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4806 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4807 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4808 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4809 gcc_cv_as_ld_jalr_reloc=yes
4815 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4816 if test x$target_cpu_default = x; then
4817 target_cpu_default=MASK_RELAX_PIC_CALLS
4819 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4822 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4824 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4825 [gcc_cv_ld_mips_personality_relaxation],
4826 [gcc_cv_ld_mips_personality_relaxation=no
4827 if test $in_tree_ld = yes ; then
4828 if test "$gcc_cv_gld_major_version" -eq 2 \
4829 -a "$gcc_cv_gld_minor_version" -ge 21 \
4830 -o "$gcc_cv_gld_major_version" -gt 2; then
4831 gcc_cv_ld_mips_personality_relaxation=yes
4833 elif test x$gcc_cv_as != x \
4834 -a x$gcc_cv_ld != x \
4835 -a x$gcc_cv_readelf != x ; then
4836 cat > conftest.s <<EOF
4838 .cfi_personality 0x80,indirect_ptr
4845 .section .data,"aw",@progbits
4849 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4850 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4851 if $gcc_cv_readelf -d conftest 2>&1 \
4852 | grep TEXTREL > /dev/null 2>&1; then
4854 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4855 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4858 gcc_cv_ld_mips_personality_relaxation=yes
4862 rm -f conftest.s conftest.o conftest])
4863 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4864 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4865 [Define if your linker can relax absolute .eh_frame personality
4866 pointers into PC-relative form.])
4869 gcc_GAS_CHECK_FEATURE([-mnan= support],
4870 gcc_cv_as_mips_nan,,
4872 [AC_DEFINE(HAVE_AS_NAN, 1,
4873 [Define if the assembler understands -mnan=.])])
4874 if test x$gcc_cv_as_mips_nan = xno \
4875 && test x$with_nan != x; then
4877 [Requesting --with-nan= requires assembler support for -mnan=])
4881 gcc_GAS_CHECK_FEATURE([.attribute support],
4882 gcc_cv_as_riscv_attribute, [2,32,0],,
4883 [.attribute stack_align,4],,
4884 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
4885 [Define if your assembler supports .attribute.])])
4888 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4889 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4890 [.gnu_attribute 8,1],,
4891 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4892 [Define if your assembler supports .gnu_attribute.])])
4893 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4894 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4899 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4900 [Define if your assembler supports .machine and .machinemode.])])
4901 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4902 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4903 [ .machine z13+vx ],,
4904 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4905 [Define if your assembler supports architecture modifiers.])])
4906 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
4907 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
4908 [ vl %v24,0(%r15),3 ],,
4909 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
4910 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
4915 # Mips and HP-UX need the GNU assembler.
4916 # Linux on IA64 might be able to use the Intel assembler.
4919 mips*-*-* | *-*-hpux* )
4920 if test x$gas_flag = xyes \
4921 || test x"$host" != x"$build" \
4922 || test ! -x "$gcc_cv_as" \
4923 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4926 echo "*** This configuration requires the GNU assembler" >&2
4932 # ??? Not all targets support dwarf2 debug_line, even within a version
4933 # of gas. Moreover, we need to emit a valid instruction to trigger any
4934 # info to the output file. So, as supported targets are added to gas 2.11,
4935 # add some instruction here to (also) show we expect this might work.
4936 # ??? Once 2.11 is released, probably need to add first known working
4937 # version to the per-target configury.
4939 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4940 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4941 | tilegx | tilepro | visium | xstormy16 | xtensa)
4951 if test x"$insn" != x; then
4953 .file 1 \"conftest.s\"
4956 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4957 gcc_cv_as_dwarf2_debug_line,
4958 [elf,2,11,0],, [$conftest_s],
4959 [if test x$gcc_cv_objdump != x \
4960 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4961 | grep debug_line > /dev/null 2>&1; then
4962 gcc_cv_as_dwarf2_debug_line=yes
4963 elif test x$gcc_cv_otool != x \
4964 && $gcc_cv_otool -l conftest.o 2> /dev/null \
4965 | grep debug_line > /dev/null 2>&1; then
4966 gcc_cv_as_dwarf2_debug_line=yes
4969 # The .debug_line file table must be in the exact order that
4970 # we specified the files, since these indices are also used
4971 # by DW_AT_decl_file. Approximate this test by testing if
4972 # the assembler bitches if the same index is assigned twice.
4973 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4974 gcc_cv_as_dwarf2_file_buggy,,,
4978 if test $gcc_cv_as_dwarf2_debug_line = yes \
4979 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4980 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4981 [Define if your assembler supports dwarf2 .file/.loc directives,
4982 and preserves file table indices exactly as given.])
4984 if test $gcc_cv_as_leb128 = yes; then
4986 .file 1 \"conftest.s\"
4987 .loc 1 3 0 view .LVU1
4993 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4994 gcc_cv_as_dwarf2_debug_view,
4995 [elf,2,27,0],,[$conftest_s],,
4996 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4997 [Define if your assembler supports views in dwarf2 .loc directives.])])
5001 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5002 gcc_cv_as_gdwarf2_flag,
5003 [elf,2,11,0], [--gdwarf2], [$insn],,
5004 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5005 [Define if your assembler supports the --gdwarf2 option.])])
5007 gcc_GAS_CHECK_FEATURE([--gstabs option],
5008 gcc_cv_as_gstabs_flag,
5009 [elf,2,11,0], [--gstabs], [$insn],,
5010 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5011 [Define if your assembler supports the --gstabs option.])])
5013 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5014 gcc_cv_as_debug_prefix_map_flag,
5015 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5016 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5017 [Define if your assembler supports the --debug-prefix-map option.])])
5020 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5021 gcc_cv_as_compress_debug,,,,
5022 [# gas compiled without zlib cannot compress debug sections and warns
5023 # about it, but still exits successfully. So check for this, too.
5024 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5026 gcc_cv_as_compress_debug=0
5027 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5028 # defaulting to the ELF gABI format.
5029 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5031 gcc_cv_as_compress_debug=2
5032 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5033 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5034 # Before binutils 2.26, gas only supported --compress-debug-options and
5035 # emitted the traditional GNU format.
5036 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5038 gcc_cv_as_compress_debug=1
5039 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5040 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5042 gcc_cv_as_compress_debug=0
5044 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5045 [Define to the level of your assembler's compressed debug section support.])
5046 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5047 [Define to the assembler option to enable compressed debug sections.])
5048 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5049 [Define to the assembler option to disable compressed debug sections.])
5051 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5054 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5055 [Define if your assembler supports .lcomm with an alignment field.])])
5057 if test x$with_sysroot = x && test x$host = x$target \
5058 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5059 && test "$prefix" != "NONE"; then
5060 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5061 [Define to PREFIX/include if cpp should also search that directory.])
5064 # Determine the version of glibc, if any, used on the target.
5065 AC_MSG_CHECKING([for target glibc version])
5066 AC_ARG_WITH([glibc-version],
5067 [AS_HELP_STRING([--with-glibc-version=M.N],
5068 [assume GCC used with glibc version M.N or later])], [
5069 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5070 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5071 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5073 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5075 glibc_version_major=0
5076 glibc_version_minor=0
5077 [if test -f $target_header_dir/features.h \
5078 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5079 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5080 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5081 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5083 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5084 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5085 [GNU C Library major version number used on the target, or 0.])
5086 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5087 [GNU C Library minor version number used on the target, or 0.])
5089 AC_ARG_ENABLE(gnu-unique-object,
5090 [AS_HELP_STRING([--enable-gnu-unique-object],
5091 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5092 [case $enable_gnu_unique_object in
5094 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5095 Valid choices are 'yes' and 'no'.]) ;;
5097 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5099 [.type foo, '$target_type_format_char'gnu_unique_object],,
5100 # We need to unquote above to to use the definition from config.gcc.
5101 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5102 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5104 if test x$enable_gnu_unique_object = xyes; then
5105 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5106 [Define if your assembler supports @gnu_unique_object.])
5109 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5110 [gcc_cv_as_line_zero],
5111 [gcc_cv_as_line_zero=no
5112 if test $in_tree_gas = yes; then
5113 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5114 elif test "x$gcc_cv_as" != x; then
5115 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5116 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5117 test "x`cat conftest.out`" = x
5119 gcc_cv_as_line_zero=yes
5121 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5122 cat conftest.s >&AS_MESSAGE_LOG_FD
5123 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5124 cat conftest.out >&AS_MESSAGE_LOG_FD
5126 rm -f conftest.o conftest.s conftest.out
5128 if test "x$gcc_cv_as_line_zero" = xyes; then
5129 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5130 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5133 AC_MSG_CHECKING(support for thin archives)
5134 thin_archive_support=no
5135 echo 'int main (void) { return 0; }' > conftest.c
5136 if ($AR --version | sed 1q | grep "GNU ar" \
5137 && $CC $CFLAGS -c conftest.c \
5138 && $AR rcT conftest.a conftest.o \
5139 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5140 thin_archive_support=yes
5142 rm -f conftest.c conftest.o conftest.a conftest
5143 AC_MSG_RESULT($thin_archive_support)
5144 AC_SUBST(thin_archive_support)
5146 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5147 gcc_cv_ld_eh_frame_hdr=no
5148 if test $in_tree_ld = yes ; then
5149 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5150 && test $in_tree_ld_is_elf = yes; then
5151 gcc_cv_ld_eh_frame_hdr=yes
5153 elif test x$gcc_cv_ld != x; then
5154 if echo "$ld_ver" | grep GNU > /dev/null; then
5155 # Check if linker supports --eh-frame-hdr option
5156 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5157 gcc_cv_ld_eh_frame_hdr=yes
5162 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5163 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5164 gcc_cv_ld_eh_frame_hdr=yes
5170 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5171 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5172 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5173 [Define if your linker supports .eh_frame_hdr.])
5175 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5177 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5178 gcc_cv_ld_eh_frame_ciev3=no
5179 if test $in_tree_ld = yes ; then
5180 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5181 && test $in_tree_ld_is_elf = yes; then
5182 gcc_cv_ld_eh_frame_ciev3=yes
5184 elif test x$gcc_cv_ld != x; then
5185 if echo "$ld_ver" | grep GNU > /dev/null; then
5186 gcc_cv_ld_eh_frame_ciev3=yes
5187 if test 0"$ld_date" -lt 20040513; then
5188 if test -n "$ld_date"; then
5189 # If there was date string, but was earlier than 2004-05-13, fail
5190 gcc_cv_ld_eh_frame_ciev3=no
5191 elif test "$ld_vers_major" -lt 2; then
5192 gcc_cv_ld_eh_frame_ciev3=no
5193 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5194 gcc_cv_ld_eh_frame_ciev3=no
5200 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5201 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5202 gcc_cv_ld_eh_frame_ciev3=yes
5208 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5209 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5210 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5211 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5213 AC_MSG_CHECKING(linker position independent executable support)
5215 if test $in_tree_ld = yes ; then
5217 # Full PIE support on Solaris was only introduced in gld 2.26.
5218 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5219 *) gcc_gld_pie_min_version=15 ;;
5221 if test "$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 \
5222 && test $in_tree_ld_is_elf = yes; then
5225 elif test x$gcc_cv_ld != x; then
5226 # Check if linker supports -pie option
5227 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5231 if echo "$ld_ver" | grep GNU > /dev/null \
5232 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5239 *-*-solaris2.1[[1-9]]*)
5240 # Solaris 11.3 added PIE support.
5241 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5248 if test x"$gcc_cv_ld_pie" = xyes; then
5249 AC_DEFINE(HAVE_LD_PIE, 1,
5250 [Define if your linker supports PIE option.])
5252 AC_MSG_RESULT($gcc_cv_ld_pie)
5254 AC_MSG_CHECKING(linker PIE support with copy reloc)
5255 gcc_cv_ld_pie_copyreloc=no
5256 if test $gcc_cv_ld_pie = yes ; then
5257 if test $in_tree_ld = yes ; then
5258 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5259 gcc_cv_ld_pie_copyreloc=yes
5261 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5262 # Check if linker supports -pie option with copy reloc
5264 i?86-*-linux* | x86_64-*-linux*)
5265 cat > conftest1.s <<EOF
5268 .type a_glob, @object
5273 cat > conftest2.s <<EOF
5276 .type main, @function
5278 movl %eax, a_glob(%rip)
5281 .section .data.rel,"aw",@progbits
5286 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5287 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5288 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5289 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5290 gcc_cv_ld_pie_copyreloc=yes
5292 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5297 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5298 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5299 [Define 0/1 if your linker supports -pie option with copy reloc.])
5300 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5302 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5303 gcc_cv_ld_eh_gc_sections=no
5304 if test $in_tree_ld = yes ; then
5305 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5306 && test $in_tree_ld_is_elf = yes; then
5307 gcc_cv_ld_eh_gc_sections=yes
5309 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5310 cat > conftest.s <<EOF
5313 .type _start, @function
5316 .size _start, .-_start
5317 .section .text.foo,"ax",@progbits
5318 .type foo, @function
5322 .section .gcc_except_table.foo,"a",@progbits
5325 .section .eh_frame,"a",@progbits
5328 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5329 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5330 | grep "gc-sections option ignored" > /dev/null; then
5331 gcc_cv_ld_eh_gc_sections=no
5332 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5333 | grep gcc_except_table > /dev/null; then
5334 gcc_cv_ld_eh_gc_sections=yes
5335 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5336 if test x$gcc_cv_as_comdat_group != xyes; then
5337 gcc_cv_ld_eh_gc_sections=no
5338 cat > conftest.s <<EOF
5341 .type _start, @function
5344 .size _start, .-_start
5345 .section .gnu.linkonce.t.foo,"ax",@progbits
5346 .type foo, @function
5350 .section .gcc_except_table.foo,"a",@progbits
5353 .section .eh_frame,"a",@progbits
5356 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5357 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5358 | grep "gc-sections option ignored" > /dev/null; then
5359 gcc_cv_ld_eh_gc_sections=no
5360 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5361 | grep gcc_except_table > /dev/null; then
5362 gcc_cv_ld_eh_gc_sections=yes
5368 rm -f conftest.s conftest.o conftest
5372 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5373 gcc_cv_ld_eh_gc_sections=no
5376 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5377 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5378 [Define if your linker supports garbage collection of
5379 sections in presence of EH frames.])
5381 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5383 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5384 gcc_cv_ld_eh_gc_sections_bug=no
5385 if test $in_tree_ld = yes ; then
5386 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5387 && test $in_tree_ld_is_elf = yes; then
5388 gcc_cv_ld_eh_gc_sections_bug=yes
5390 elif test x$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
5391 gcc_cv_ld_eh_gc_sections_bug=yes
5392 cat > conftest.s <<EOF
5395 .type _start, @function
5398 .size _start, .-_start
5399 .section .text.startup.foo,"ax",@progbits
5400 .type foo, @function
5404 .section .gcc_except_table.foo,"a",@progbits
5407 .section .eh_frame,"a",@progbits
5410 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5411 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5412 | grep "gc-sections option ignored" > /dev/null; then
5414 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5415 | grep gcc_except_table > /dev/null; then
5416 gcc_cv_ld_eh_gc_sections_bug=no
5419 rm -f conftest.s conftest.o conftest
5421 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5422 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5423 [Define if your linker has buggy garbage collection of
5424 sections support when .text.startup.foo like sections are used.])
5426 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5428 AC_MSG_CHECKING(linker for compressed debug sections)
5429 # gold/gld support compressed debug sections since binutils 2.19/2.21
5430 # In binutils 2.26, gld gained support for the ELF gABI format.
5431 if test $in_tree_ld = yes ; then
5432 gcc_cv_ld_compress_debug=0
5433 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5434 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5435 gcc_cv_ld_compress_debug=2
5436 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5437 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5438 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5439 gcc_cv_ld_compress_debug=3
5440 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5441 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5442 && test $in_tree_ld_is_elf = yes; then
5443 gcc_cv_ld_compress_debug=1
5445 elif echo "$ld_ver" | grep GNU > /dev/null; then
5446 if test "$ld_vers_major" -lt 2 \
5447 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5448 gcc_cv_ld_compress_debug=0
5449 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5450 gcc_cv_ld_compress_debug=1
5452 gcc_cv_ld_compress_debug=3
5453 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5455 if test $ld_is_gold = yes; then
5456 gcc_cv_ld_compress_debug=2
5457 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5463 # Introduced in Solaris 11.2.
5464 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5465 gcc_cv_ld_compress_debug=3
5466 gcc_cv_ld_compress_debug_option="-z compress-sections"
5468 gcc_cv_ld_compress_debug=0
5472 # Assume linkers other than GNU ld don't support compessed debug
5474 gcc_cv_ld_compress_debug=0
5479 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5480 [Define to the level of your linker's compressed debug section support.])
5481 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5482 [Define to the linker option to enable compressed debug sections.])
5483 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5485 if test x"$ld64_flag" = x"yes"; then
5487 # Set defaults for possibly untestable items.
5488 gcc_cv_ld64_export_dynamic=0
5490 if test "$build" = "$host"; then
5496 # On Darwin, because of FAT library support, it is often possible to execute
5497 # exes from compatible archs even when the host differs from the build system.
5498 case "$build","$host" in
5499 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5504 # If the configurer specified a minimum ld64 version to be supported, then use
5505 # that to determine feature support.
5506 if test x"${gcc_cv_ld64_version}" != x; then
5507 AC_MSG_CHECKING(ld64 specified version)
5508 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5509 AC_MSG_RESULT($gcc_cv_ld64_major)
5510 if test "$gcc_cv_ld64_major" -ge 236; then
5511 gcc_cv_ld64_export_dynamic=1
5513 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5514 # If the version was not specified, try to find it.
5515 AC_MSG_CHECKING(linker version)
5516 if test x"${gcc_cv_ld64_version}" = x; then
5517 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5519 AC_MSG_RESULT($gcc_cv_ld64_version)
5521 AC_MSG_CHECKING(linker for -export_dynamic support)
5522 gcc_cv_ld64_export_dynamic=1
5523 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5524 gcc_cv_ld64_export_dynamic=0
5526 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5529 if test x"${gcc_cv_ld64_version}" != x; then
5530 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5531 [Define to ld64 version.])
5534 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5535 [Define to 1 if ld64 supports '-export_dynamic'.])
5542 AC_CACHE_CHECK(linker --as-needed support,
5543 gcc_cv_ld_as_needed,
5544 [gcc_cv_ld_as_needed=no
5545 gcc_cv_ld_as_needed_option='--as-needed'
5546 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5547 if test $in_tree_ld = yes ; then
5548 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5549 && test $in_tree_ld_is_elf = yes; then
5550 gcc_cv_ld_as_needed=yes
5551 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5552 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5553 gcc_cv_ld_no_as_needed_option='--pop-state'
5556 elif test x$gcc_cv_ld != x; then
5557 # Check if linker supports --as-needed and --no-as-needed options
5558 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5559 gcc_cv_ld_as_needed=yes
5560 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5561 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5562 && echo "$ld_ver" | grep GNU > /dev/null \
5563 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5564 # Use these options only when both ld.bfd and ld.gold support
5565 # --push-state/--pop-state, which unfortunately wasn't added
5567 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5568 gcc_cv_ld_no_as_needed_option='--pop-state'
5571 case "$target:$gnu_ld" in
5573 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5575 gcc_cv_ld_as_needed=yes
5576 gcc_cv_ld_as_needed_option="-z ignore"
5577 gcc_cv_ld_no_as_needed_option="-z record"
5581 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5582 # dl_iterate_phdr, i.e. since Solaris 11.
5584 *-*-solaris2.1[[1-9]]*)
5586 i?86-*-* | x86_64-*-*)
5587 if echo "$ld_ver" | grep GNU > /dev/null; then
5588 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5589 gcc_cv_ld_as_needed=no
5595 gcc_cv_ld_as_needed=no
5599 if test x"$gcc_cv_ld_as_needed" = xyes; then
5600 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5601 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5602 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5603 [Define to the linker option to ignore unused dependencies.])
5604 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5605 [Define to the linker option to keep unused dependencies.])
5608 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5609 saved_LDFLAGS="$LDFLAGS"
5610 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5611 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5612 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5613 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5615 LDFLAGS="$saved_LDFLAGS"
5616 if test "x$gcc_cv_ld_clearcap" = xyes; then
5617 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5618 [Define if the linker supports clearing hardware capabilities via mapfile.])
5619 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5621 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5627 emul_name="-melf32lppc"
5630 emul_name="-melf32ppc"
5633 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5635 [gcc_cv_ld_ppc_attr=no
5636 if test x"$ld_is_gold" = xyes; then
5637 gcc_cv_ld_ppc_attr=yes
5638 elif test $in_tree_ld = yes ; then
5639 if test "$gcc_cv_gld_major_version" -eq 2 \
5640 -a "$gcc_cv_gld_minor_version" -ge 28 \
5641 -o "$gcc_cv_gld_major_version" -gt 2; then
5642 gcc_cv_ld_ppc_attr=yes
5644 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5645 # check that merging the long double .gnu_attribute doesn't warn
5646 cat > conftest1.s <<EOF
5649 cat > conftest2.s <<EOF
5652 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5653 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5654 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5655 && test ! -s conftest.err; then
5656 gcc_cv_ld_ppc_attr=yes
5658 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5661 if test x$gcc_cv_ld_ppc_attr = xyes; then
5662 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5663 [Define if your PowerPC linker has .gnu.attributes long double support.])
5668 case "$target:$tm_file" in
5669 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5672 emul_name="-melf64lppc"
5675 emul_name="-melf64ppc"
5678 emul_name="-melf64ppc_fbsd"
5681 AC_CACHE_CHECK(linker support for omitting dot symbols,
5682 gcc_cv_ld_no_dot_syms,
5683 [gcc_cv_ld_no_dot_syms=no
5684 if test x"$ld_is_gold" = xyes; then
5685 gcc_cv_ld_no_dot_syms=yes
5686 elif test $in_tree_ld = yes ; then
5687 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5688 gcc_cv_ld_no_dot_syms=yes
5690 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5691 cat > conftest1.s <<EOF
5695 cat > conftest2.s <<EOF
5696 .section ".opd","aw"
5701 .quad .LEfoo,.TOC.@tocbase,0
5707 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5708 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5709 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5710 gcc_cv_ld_no_dot_syms=yes
5712 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5715 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5716 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5717 [Define if your PowerPC64 linker only needs function descriptor syms.])
5720 AC_CACHE_CHECK(linker large toc support,
5721 gcc_cv_ld_large_toc,
5722 [gcc_cv_ld_large_toc=no
5723 if test x"$ld_is_gold" = xyes; then
5724 gcc_cv_ld_large_toc=yes
5725 elif test $in_tree_ld = yes ; then
5726 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5727 gcc_cv_ld_large_toc=yes
5729 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5730 cat > conftest.s <<EOF
5731 .section ".tbss","awT",@nobits
5737 addis 9,13,ie0@got@tprel@ha
5738 ld 9,ie0@got@tprel@l(9)
5740 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5741 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5742 gcc_cv_ld_large_toc=yes
5744 rm -f conftest conftest.o conftest.s
5747 if test x"$gcc_cv_ld_large_toc" = xyes; then
5748 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5749 [Define if your PowerPC64 linker supports a large TOC.])
5752 AC_CACHE_CHECK(linker toc pointer alignment,
5753 gcc_cv_ld_toc_align,
5754 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5755 cat > conftest.s <<EOF
5760 .section .data.rel.ro,"aw",@progbits
5765 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5766 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5767 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5769 rm -f conftest conftest.o conftest.s
5772 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5773 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5774 [Define to .TOC. alignment forced by your linker.])
5781 AC_CACHE_CHECK(linker large toc support,
5782 gcc_cv_ld_large_toc,
5783 [gcc_cv_ld_large_toc=no
5784 if test x$gcc_cv_as != x ; then
5785 cat > conftest.s <<EOF
5795 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5796 gcc_cv_ld_large_toc=yes
5798 rm -f conftest conftest.o conftest.s
5801 if test x"$gcc_cv_ld_large_toc" = xyes; then
5802 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5803 [Define if your PowerPC64 linker supports a large TOC.])
5808 AC_CACHE_CHECK(linker --build-id support,
5810 [gcc_cv_ld_buildid=no
5811 if test $in_tree_ld = yes ; then
5812 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5813 "$gcc_cv_gld_minor_version" -ge 18 -o \
5814 "$gcc_cv_gld_major_version" -gt 2 \
5815 && test $in_tree_ld_is_elf = yes; then
5816 gcc_cv_ld_buildid=yes
5818 elif test x$gcc_cv_ld != x; then
5819 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5820 gcc_cv_ld_buildid=yes
5823 if test x"$gcc_cv_ld_buildid" = xyes; then
5824 AC_DEFINE(HAVE_LD_BUILDID, 1,
5825 [Define if your linker supports --build-id.])
5828 AC_ARG_ENABLE(linker-build-id,
5829 [AS_HELP_STRING([--enable-linker-build-id],
5830 [compiler will always pass --build-id to linker])],
5832 enable_linker_build_id=no)
5834 if test x"$enable_linker_build_id" = xyes; then
5835 if test x"$gcc_cv_ld_buildid" = xyes; then
5836 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5837 [Define if gcc should always pass --build-id to linker.])
5839 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5843 # In binutils 2.21, GNU ld gained support for new emulations fully
5844 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5845 AC_CACHE_CHECK(linker *_sol2 emulation support,
5846 gcc_cv_ld_sol2_emulation,
5847 [gcc_cv_ld_sol2_emulation=no
5848 if test $in_tree_ld = yes ; then
5849 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5850 "$gcc_cv_gld_minor_version" -ge 21 -o \
5851 "$gcc_cv_gld_major_version" -gt 2 \
5852 && test $in_tree_ld_is_elf = yes; then
5853 gcc_cv_ld_sol2_emulation=yes
5855 elif test x$gcc_cv_ld != x; then
5856 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5857 grep _sol2 > /dev/null; then
5858 gcc_cv_ld_sol2_emulation=yes
5861 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5862 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5863 [Define if your linker supports the *_sol2 emulations.])
5866 AC_CACHE_CHECK(linker --sysroot support,
5868 [gcc_cv_ld_sysroot=no
5869 if test $in_tree_ld = yes ; then
5870 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5871 gcc_cv_ld_sysroot=yes
5873 elif test x$gcc_cv_ld != x; then
5874 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5875 gcc_cv_ld_sysroot=yes
5878 if test x"$gcc_cv_ld_sysroot" = xyes; then
5879 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5880 [Define if your linker supports --sysroot.])
5885 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5886 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5887 gcc_cv_solaris_crts,
5888 [gcc_cv_solaris_crts=no
5889 if test x$host != x$target; then
5890 if test "x$with_sysroot" = xyes; then
5891 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5893 target_sysroot="${with_sysroot}"
5896 target_libdir="$target_sysroot/usr/lib"
5897 # At the time they were added, gcrt1.o became a symlink for backwards
5898 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5900 i?86-*-solaris2* | x86_64-*-solaris2*)
5901 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5904 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5909 if test x$gcc_cv_solaris_crts = xyes; then
5910 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5911 [Define if the system-provided CRTs are present on Solaris.])
5914 AC_ARG_ENABLE(libssp,
5915 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5916 [case "${enableval}" in
5920 AC_MSG_ERROR([unknown libssp setting $enableval])
5924 # Test for stack protector support in target C library.
5925 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5926 gcc_cv_libc_provides_ssp,
5927 [gcc_cv_libc_provides_ssp=no
5928 if test "x$enable_libssp" = "xno"; then
5929 gcc_cv_libc_provides_ssp=yes
5930 elif test "x$enable_libssp" = "xyes"; then
5931 gcc_cv_libc_provides_ssp=no
5935 # All versions of musl provide stack protector
5936 gcc_cv_libc_provides_ssp=yes;;
5937 *-*-linux* | *-*-kfreebsd*-gnu)
5938 # glibc 2.4 and later provides __stack_chk_fail and
5939 # either __stack_chk_guard, or TLS access to stack guard canary.
5940 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5941 [if test -f $target_header_dir/features.h \
5942 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5943 $target_header_dir/features.h > /dev/null; then
5944 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5945 $target_header_dir/features.h > /dev/null && \
5946 test -f $target_header_dir/bits/uClibc_config.h && \
5947 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5948 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5949 gcc_cv_libc_provides_ssp=yes
5951 # all versions of Bionic support stack protector
5952 elif test -f $target_header_dir/sys/cdefs.h \
5953 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5954 $target_header_dir/sys/cdefs.h > /dev/null; then
5955 gcc_cv_libc_provides_ssp=yes
5959 # Avoid complicated tests (see
5960 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5961 # simply assert that glibc does provide this, which is true for all
5962 # realistically usable GNU/Hurd configurations.
5963 # All supported versions of musl provide it as well
5964 gcc_cv_libc_provides_ssp=yes;;
5965 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5966 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5967 [echo "no __stack_chk_fail on this target"])
5969 *) gcc_cv_libc_provides_ssp=no ;;
5973 if test x$gcc_cv_libc_provides_ssp = xyes; then
5974 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5975 [Define if your target C library provides stack protector support])
5978 # Check whether --enable-default-ssp was given.
5979 AC_ARG_ENABLE(default-ssp,
5980 [AS_HELP_STRING([--enable-default-ssp],
5981 [enable Stack Smashing Protection as default])],[
5982 if test x$gcc_cv_libc_provides_ssp = xyes; then
5984 ia64*-*-*) enable_default_ssp=no ;;
5985 *) enable_default_ssp=$enableval ;;
5988 enable_default_ssp=no
5990 enable_default_ssp=no)
5991 if test x$enable_default_ssp = xyes ; then
5992 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5993 [Define if your target supports default stack protector and it is enabled.])
5995 AC_SUBST([enable_default_ssp])
5997 # Test for <sys/sdt.h> on the target.
5998 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5999 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6001 if test -f $target_header_dir/sys/sdt.h; then
6003 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6004 [Define if your target C library provides sys/sdt.h])
6006 AC_MSG_RESULT($have_sys_sdt_h)
6008 # Check if TFmode long double should be used by default or not.
6009 # Some glibc targets used DFmode long double, but with glibc 2.4
6010 # and later they can use TFmode.
6012 powerpc*-*-linux* | \
6016 AC_ARG_WITH(long-double-128,
6017 [AS_HELP_STRING([--with-long-double-128],
6018 [use 128-bit long double by default])],
6019 gcc_cv_target_ldbl128="$with_long_double_128",
6020 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6021 [gcc_cv_target_ldbl128=no
6022 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6023 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6024 && gcc_cv_target_ldbl128=yes
6028 if test x$gcc_cv_target_ldbl128 = xyes; then
6029 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6030 [Define if TFmode long double should be the default])
6033 # Check if TFmode long double target should use the IBM extended double or IEEE
6034 # 128-bit floating point formats if long doubles are 128-bits long. The long
6035 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6036 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6038 AC_ARG_WITH([long-double-format],
6039 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6040 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6041 case "$target:$with_long_double_format" in
6042 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6045 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6046 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6048 power7 | power8 | power9 | power1*)
6052 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6053 supported if the default cpu is power7 or newer])
6054 with_long_double_format=""
6058 xpowerpc64*-*-linux*:*)
6059 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6060 with_long_double_format=""
6063 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6064 on 64-bit PowerPC VSX Linux systems])
6065 with_long_double_format=""
6070 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6071 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6072 gcc_cv_libc_provides_hwcap_in_tcb=no
6075 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6078 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6079 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6080 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6083 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6084 gcc_cv_target_dl_iterate_phdr=unknown
6087 # <link.h> needs both a dl_iterate_phdr declaration and support for
6088 # compilation with largefile support.
6089 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6090 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6091 gcc_cv_target_dl_iterate_phdr=yes
6093 gcc_cv_target_dl_iterate_phdr=no
6096 *-*-dragonfly* | *-*-freebsd*)
6097 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6098 gcc_cv_target_dl_iterate_phdr=yes
6100 gcc_cv_target_dl_iterate_phdr=no
6104 gcc_cv_target_dl_iterate_phdr=yes
6107 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6108 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6109 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6110 [Define if your target C library provides the `dl_iterate_phdr' function.])
6112 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6114 # We no longer support different GC mechanisms. Emit an error if
6115 # the user configures with --with-gc.
6117 [AS_HELP_STRING([--with-gc={page,zone}],
6118 [this option is not supported anymore. It used to choose
6119 the garbage collection mechanism to use with the compiler])],
6120 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6123 # Libraries to use on the host. This will normally be set by the top
6124 # level Makefile. Here we simply capture the value for our Makefile.
6125 if test -z "${HOST_LIBS+set}"; then
6130 # Use the system's zlib library.
6133 dnl Very limited version of automake's enable-maintainer-mode
6135 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6136 dnl maintainer-mode is disabled by default
6137 AC_ARG_ENABLE(maintainer-mode,
6138 [AS_HELP_STRING([--enable-maintainer-mode],
6139 [enable make rules and dependencies not useful
6140 (and sometimes confusing) to the casual installer])],
6141 maintainer_mode=$enableval,
6144 AC_MSG_RESULT($maintainer_mode)
6146 if test "$maintainer_mode" = "yes"; then
6153 dnl Whether to prevent multiple front-ends from linking at the same time
6155 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6156 AC_ARG_ENABLE(link-mutex,
6157 [AS_HELP_STRING([--enable-link-mutex],
6158 [avoid linking multiple front-ends at once to avoid thrashing
6159 on the build machine])],
6160 do_link_mutex=$enableval,
6162 AC_MSG_RESULT($do_link_mutex)
6164 if test "$do_link_mutex" = "yes"; then
6169 AC_SUBST(DO_LINK_MUTEX)
6175 # Make empty files to contain the specs and options for each language.
6176 # Then add #include lines to for a compiler that has specs and/or options.
6182 # These (without "all_") are set in each config-lang.in.
6183 # `language' must be a single word so is spelled singularly.
6186 all_outputs='Makefile'
6187 # List of language makefile fragments.
6189 # Additional files for gengtype
6190 all_gtfiles="$target_gtfiles"
6192 # These are the languages that are set in --enable-languages,
6193 # and are available in the GCC tree.
6194 all_selected_languages=
6196 # Add the language fragments.
6197 # Languages are added via two mechanisms. Some information must be
6198 # recorded in makefile variables, these are defined in config-lang.in.
6199 # We accumulate them and plug them into the main Makefile.
6200 # The other mechanism is a set of hooks for each of the main targets
6201 # like `clean', `install', etc.
6203 language_hooks="Make-hooks"
6205 for lang in ${srcdir}/*/config-lang.in
6208 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6210 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6211 if test "x$lang_alias" = x
6213 echo "$lang doesn't set \$language." 1>&2
6216 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6217 subdirs="$subdirs $subdir"
6219 # $gcc_subdir is where the gcc integration files are to be found
6220 # for a language, both for internal compiler purposes (compiler
6221 # sources implementing front-end to GCC tree converters), and for
6222 # build infrastructure purposes (Make-lang.in, etc.)
6224 # This will be <subdir> (relative to $srcdir) if a line like
6225 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6226 # is found in <langdir>/config-lang.in, and will remain <langdir>
6229 # Except for the language alias (fetched above), the regular
6230 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6231 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6232 # only this and the language alias.
6234 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6235 if [ "$gcc_subdir" = "" ]; then
6236 gcc_subdir="$subdir"
6239 case ",$enable_languages," in
6241 all_selected_languages="$all_selected_languages $lang_alias"
6242 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6243 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6255 . ${srcdir}/$gcc_subdir/config-lang.in
6256 if test "x$language" = x
6258 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6263 case ",$enable_languages," in
6266 for i in $subdir_requires; do
6267 test -f "${srcdir}/$i/config-lang.in" && continue
6275 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6276 if test -f $srcdir/$gcc_subdir/lang.opt; then
6277 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6278 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6280 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6281 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6283 all_languages="$all_languages $language"
6284 all_compilers="$all_compilers $compilers"
6285 all_outputs="$all_outputs $outputs"
6286 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6287 case ",$enable_languages," in
6289 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6291 AC_SUBST(enable_lto)
6298 for language in $all_selected_languages
6300 check_languages="$check_languages check-$language"
6304 for language in $all_selected_languages
6306 selftest_languages="$selftest_languages selftest-$language"
6309 # We link each language in with a set of hooks, reached indirectly via
6310 # lang.${target}. Only do so for selected languages.
6314 target_list="all.cross start.encap rest.encap tags \
6315 install-common install-man install-info install-pdf install-html dvi \
6316 pdf html uninstall info man srcextra srcman srcinfo \
6317 mostlyclean clean distclean maintainer-clean install-plugin"
6319 for t in $target_list
6322 for lang in $all_selected_languages
6326 echo "lang.$t: $x" >> Make-hooks
6330 # Option include files
6333 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6334 option_includes="option-includes.mk"
6335 AC_SUBST_FILE(option_includes)
6343 echo "dir ." > .gdbinit
6344 echo "dir ${srcdir}" >> .gdbinit
6345 if test x$gdb_needs_out_file_path = xyes
6347 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6349 if test "x$subdirs" != x; then
6352 echo "dir ${srcdir}/$s" >> .gdbinit
6355 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6356 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6358 # Put a breakpoint on __asan_report_error to help with debugging buffer
6361 *-fsanitize=address*)
6362 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6366 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6367 AC_SUBST(gcc_tooldir)
6370 # Find a directory in which to install a shared libgcc.
6372 AC_ARG_ENABLE(version-specific-runtime-libs,
6373 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6374 [specify that runtime libraries should be
6375 installed in a compiler-specific directory])])
6377 # Substitute configuration variables
6380 AC_SUBST(all_compilers)
6381 AC_SUBST(all_gtfiles)
6382 AC_SUBST(all_lang_makefrags)
6383 AC_SUBST(all_languages)
6384 AC_SUBST(all_selected_languages)
6385 AC_SUBST(build_exeext)
6386 AC_SUBST(build_install_headers_dir)
6387 AC_SUBST(build_xm_file_list)
6388 AC_SUBST(build_xm_include_list)
6389 AC_SUBST(build_xm_defines)
6390 AC_SUBST(build_file_translate)
6391 AC_SUBST(check_languages)
6392 AC_SUBST(selftest_languages)
6393 AC_SUBST(cpp_install_dir)
6394 AC_SUBST(xmake_file)
6395 AC_SUBST(tmake_file)
6396 AC_SUBST(TM_ENDIAN_CONFIG)
6397 AC_SUBST(TM_MULTILIB_CONFIG)
6398 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6399 AC_SUBST(extra_gcc_objs)
6400 AC_SUBST(user_headers_inc_next_pre)
6401 AC_SUBST(user_headers_inc_next_post)
6402 AC_SUBST(extra_headers_list)
6403 AC_SUBST(extra_objs)
6404 AC_SUBST(extra_programs)
6405 AC_SUBST(float_h_file)
6406 AC_SUBST(gcc_config_arguments)
6407 AC_SUBST(gcc_gxx_include_dir)
6408 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6409 AC_SUBST(host_exeext)
6410 AC_SUBST(host_xm_file_list)
6411 AC_SUBST(host_xm_include_list)
6412 AC_SUBST(host_xm_defines)
6413 AC_SUBST(out_host_hook_obj)
6415 AC_SUBST(lang_opt_files)
6416 AC_SUBST(lang_specs_files)
6417 AC_SUBST(lang_tree_files)
6418 AC_SUBST(local_prefix)
6420 AC_SUBST(objc_boehm_gc)
6422 AC_SUBST(out_object_file)
6423 AC_SUBST(common_out_file)
6424 AC_SUBST(common_out_object_file)
6425 AC_SUBST(tm_file_list)
6426 AC_SUBST(tm_include_list)
6427 AC_SUBST(tm_defines)
6428 AC_SUBST(tm_p_file_list)
6429 AC_SUBST(tm_p_include_list)
6430 AC_SUBST(tm_d_file_list)
6431 AC_SUBST(tm_d_include_list)
6432 AC_SUBST(xm_file_list)
6433 AC_SUBST(xm_include_list)
6434 AC_SUBST(xm_defines)
6435 AC_SUBST(use_gcc_stdint)
6436 AC_SUBST(c_target_objs)
6437 AC_SUBST(cxx_target_objs)
6438 AC_SUBST(fortran_target_objs)
6439 AC_SUBST(d_target_objs)
6440 AC_SUBST(target_cpu_default)
6442 AC_SUBST_FILE(language_hooks)
6445 if test x${build} = x${host} ; then
6446 if test x${host} = x${target} ; then
6447 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6449 echo "Links are now set up to build a cross-compiler" 1>&2
6450 echo " from ${host} to ${target}." 1>&2
6453 if test x${host} = x${target} ; then
6454 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6455 echo " for ${target}." 1>&2
6457 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6458 echo " from ${host} to ${target}." 1>&2
6462 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6463 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6465 AC_ARG_VAR(ISLLIBS,[How to link isl])
6466 AC_ARG_VAR(ISLINC,[How to find isl include files])
6467 if test "x${ISLLIBS}" != "x" ; then
6468 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6472 AC_SUBST(pluginlibs)
6473 AC_SUBST(enable_plugin)
6474 if test x"$enable_plugin" = x"yes"; then
6475 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6479 # Enable --enable-host-shared
6480 AC_ARG_ENABLE(host-shared,
6481 [AS_HELP_STRING([--enable-host-shared],
6482 [build host code as shared libraries])],
6483 [PICFLAG=-fPIC], [PICFLAG=])
6484 AC_SUBST(enable_host_shared)
6488 AC_ARG_ENABLE(libquadmath-support,
6489 [AS_HELP_STRING([--disable-libquadmath-support],
6490 [disable libquadmath support for Fortran])],
6491 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6492 ENABLE_LIBQUADMATH_SUPPORT=yes)
6493 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6494 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6495 [Define to 1 to enable libquadmath support])
6499 # Specify what hash style to use by default.
6500 AC_ARG_WITH([linker-hash-style],
6501 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6502 [specify the linker hash style])],
6503 [case x"$withval" in
6505 LINKER_HASH_STYLE=sysv
6508 LINKER_HASH_STYLE=gnu
6511 LINKER_HASH_STYLE=both
6514 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6517 [LINKER_HASH_STYLE=''])
6518 if test x"${LINKER_HASH_STYLE}" != x; then
6519 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6520 [The linker hash style])
6523 # Specify what should be the default of -fdiagnostics-color option.
6524 AC_ARG_WITH([diagnostics-color],
6525 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6526 [specify the default of -fdiagnostics-color option
6527 auto-if-env stands for -fdiagnostics-color=auto if
6528 GCC_COLOR environment variable is present and
6529 -fdiagnostics-color=never otherwise])],
6530 [case x"$withval" in
6532 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6535 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6538 DIAGNOSTICS_COLOR_DEFAULT=-1
6541 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6544 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6547 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6548 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6549 [The default for -fdiagnostics-color option])
6551 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6552 # of jit/jit-playback.c.
6553 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6554 echo "gcc_driver_version: ${gcc_driver_version}"
6555 cat > gcc-driver-name.h <<EOF
6556 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6559 # Check whether --enable-default-pie was given.
6560 AC_ARG_ENABLE(default-pie,
6561 [AS_HELP_STRING([--enable-default-pie],
6562 [enable Position Independent Executable as default])],
6563 enable_default_pie=$enableval,
6564 enable_default_pie=no)
6565 if test x$enable_default_pie = xyes ; then
6566 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6567 [Define if your target supports default PIE and it is enabled.])
6569 AC_SUBST([enable_default_pie])
6571 # Check if -fno-PIE works.
6572 AC_CACHE_CHECK([for -fno-PIE option],
6574 [saved_CXXFLAGS="$CXXFLAGS"
6575 CXXFLAGS="$CXXFLAGS -fno-PIE"
6576 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6577 [gcc_cv_c_no_fpie=yes],
6578 [gcc_cv_c_no_fpie=no])
6579 CXXFLAGS="$saved_CXXFLAGS"])
6580 if test "$gcc_cv_c_no_fpie" = "yes"; then
6581 NO_PIE_CFLAGS="-fno-PIE"
6583 AC_SUBST([NO_PIE_CFLAGS])
6585 # Check if -no-pie works.
6586 AC_CACHE_CHECK([for -no-pie option],
6588 [saved_LDFLAGS="$LDFLAGS"
6589 LDFLAGS="$LDFLAGS -no-pie"
6590 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6591 [gcc_cv_no_pie=yes],
6593 LDFLAGS="$saved_LDFLAGS"])
6594 if test "$gcc_cv_no_pie" = "yes"; then
6595 NO_PIE_FLAG="-no-pie"
6597 AC_SUBST([NO_PIE_FLAG])
6599 # Check linker supports '-z bndplt'
6600 ld_bndplt_support=no
6601 AC_MSG_CHECKING(linker -z bndplt option)
6602 if test x"$ld_is_gold" = xno; then
6603 if test $in_tree_ld = yes ; then
6604 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6605 ld_bndplt_support=yes
6607 elif test x$gcc_cv_ld != x; then
6608 # Check if linker supports -a bndplt option
6609 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6610 ld_bndplt_support=yes
6614 if test x"$ld_bndplt_support" = xyes; then
6615 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6616 [Define if your linker supports -z bndplt])
6618 AC_MSG_RESULT($ld_bndplt_support)
6620 # Check linker supports '--push-state'/'--pop-state'
6621 ld_pushpopstate_support=no
6622 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6623 if test x"$ld_is_gold" = xno; then
6624 if test $in_tree_ld = yes ; then
6625 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6626 ld_pushpopstate_support=yes
6628 elif test x$gcc_cv_ld != x; then
6629 # Check if linker supports --push-state/--pop-state options
6630 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6631 ld_pushpopstate_support=yes
6635 if test x"$ld_pushpopstate_support" = xyes; then
6636 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6637 [Define if your linker supports --push-state/--pop-state])
6639 AC_MSG_RESULT($ld_pushpopstate_support)
6641 # Configure the subdirectories
6642 # AC_CONFIG_SUBDIRS($subdirs)
6644 # Create the Makefile
6645 # and configure language subdirectories
6646 AC_CONFIG_FILES($all_outputs)
6648 AC_CONFIG_COMMANDS([default],
6650 case ${CONFIG_HEADERS} in
6651 *auto-host.h:config.in*)
6654 # Make sure all the subdirs exist.
6655 for d in $subdirs doc build common c-family
6657 test -d $d || mkdir $d
6660 [subdirs='$subdirs'])