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 # Allow overriding the default URL for documentation
964 AC_ARG_WITH(documentation-root-url,
965 AS_HELP_STRING([--with-documentation-root-url=URL],
966 [Root for documentation URLs]),
968 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
969 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
970 *) DOCUMENTATION_ROOT_URL="$withval"
973 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/gcc/"
975 AC_SUBST(DOCUMENTATION_ROOT_URL)
977 # Sanity check enable_languages in case someone does not run the toplevel
978 # configure # script.
979 AC_ARG_ENABLE(languages,
980 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
981 [case ,${enable_languages}, in
983 # go safe -- we cannot be much sure without the toplevel
985 # analysis of which target libs are present and usable
989 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
994 enable_languages=c,${enable_languages}
997 [enable_languages=c])
999 # If top-level libada has been disabled, then wire in install-gnatlib
1000 # invocation with `make install', so that one can build and install
1001 # the library manually with `make -C gcc all gnatlib gnattools install'.
1002 if test x"$enable_libada" = xno; then
1003 gnat_install_lib=gnat-install-lib
1007 AC_SUBST(gnat_install_lib)
1009 if test x"$enable_as_accelerator_for" != x; then
1010 AC_DEFINE(ACCEL_COMPILER, 1,
1011 [Define if this compiler should be built as the offload target compiler.])
1012 enable_as_accelerator=yes
1015 # In this case we expect offload compiler to be built as native, so we
1016 # need to rename the driver to avoid clashes with host's drivers.
1017 program_transform_name="s&^&${target}-&" ;;
1019 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1020 program_transform_name=`echo $program_transform_name | sed $sedscript`
1021 accel_dir_suffix=/accel/${target_noncanonical}
1022 real_target_noncanonical=${enable_as_accelerator_for}
1024 AC_SUBST(enable_as_accelerator)
1025 AC_SUBST(real_target_noncanonical)
1026 AC_SUBST(accel_dir_suffix)
1028 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1029 tgt=`echo $tgt | sed 's/=.*//'`
1031 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1037 omp_device_property=omp-device-properties-i386
1038 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1041 omp_device_property=omp-device-properties-nvptx
1042 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1045 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1046 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1049 if test x"$offload_targets" = x; then
1050 offload_targets=$tgt
1052 offload_targets="$offload_targets,$tgt"
1055 AC_SUBST(omp_device_properties)
1056 AC_SUBST(omp_device_property_deps)
1058 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1059 [Define to offload targets, separated by commas.])
1060 if test x"$enable_offloading" != x; then
1061 AC_DEFINE(ENABLE_OFFLOADING, 1,
1062 [Define this to enable support for offloading.])
1064 AC_DEFINE(ENABLE_OFFLOADING, 0,
1065 [Define this to enable support for offloading.])
1068 if test x"$enable_hsa" = x1 ; then
1069 AC_DEFINE(ENABLE_HSA, 1,
1070 [Define this to enable support for generating HSAIL.])
1073 AC_ARG_WITH(multilib-list,
1074 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1076 with_multilib_list=default)
1078 # -------------------------
1079 # Checks for other programs
1080 # -------------------------
1084 # Find some useful tools
1086 # We need awk to create options.c and options.h.
1087 # Bail out if it's missing.
1089 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1096 AC_SUBST(ranlib_flags)
1100 # See if cmp has --ignore-initial.
1101 gcc_AC_PROG_CMP_IGNORE_INITIAL
1103 # See if we have the mktemp command.
1104 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1106 # See if makeinfo has been installed and is modern enough
1107 # that we can use it.
1108 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1109 [GNU texinfo.* \([0-9][0-9.]*\)],
1110 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1111 if test $gcc_cv_prog_makeinfo_modern = no; then
1113 *** Makeinfo is missing or too old.
1114 *** Info documentation will not be built.])
1119 AC_SUBST(BUILD_INFO)
1121 # Is pod2man recent enough to regenerate manpages?
1122 AC_MSG_CHECKING([for recent Pod::Man])
1123 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1125 GENERATED_MANPAGES=generated-manpages
1130 AC_SUBST(GENERATED_MANPAGES)
1132 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1135 dnl Don't use AC_PROG_LEX; we insist on flex.
1136 dnl LEXLIB is not useful in gcc.
1137 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1140 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1142 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1143 # check for build == host before using them.
1146 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1147 && test -d ../binutils ; then
1148 NM='${objdir}/../binutils/nm-new'
1150 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1154 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1155 && test -d ../binutils ; then
1156 AR='${objdir}/../binutils/ar'
1158 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1161 # The jit documentation looks better if built with sphinx, but can be
1162 # built with texinfo if sphinx is not available.
1163 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1164 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1166 # --------------------
1167 # Checks for C headers
1168 # --------------------
1170 # Need to reject headers which give warnings, so that the -Werror bootstrap
1171 # works later. *sigh* This needs to come before all header checks.
1178 AC_HEADER_TIOCGWINSZ
1179 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1180 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1181 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1182 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1184 # Check for thread headers.
1185 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1186 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1188 # These tests can't be done till we know if we have limits.h.
1192 # ----------------------
1193 # Checks for C++ headers
1194 # ----------------------
1196 dnl Autoconf will give an error in the configure script if there is no
1197 dnl C++ preprocessor. Hack to prevent that.
1198 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1200 m4_popdef([AC_MSG_ERROR])[]dnl
1202 AC_CHECK_HEADERS(unordered_map)
1203 AC_CHECK_HEADERS(tr1/unordered_map)
1204 AC_CHECK_HEADERS(ext/hash_map)
1207 # Dependency checking.
1211 AC_CONFIG_COMMANDS([gccdepdir],[
1212 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1213 for lang in $subdirs c-family common
1215 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1216 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1218 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1225 # These libraries may be used by collect2.
1226 # We may need a special search path to get them linked.
1227 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1229 for libs in '' -lld -lmld \
1230 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1231 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1234 AC_TRY_LINK_FUNC(ldopen,
1235 [gcc_cv_collect2_libs="$libs"; break])
1238 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1239 case $gcc_cv_collect2_libs in
1241 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1243 AC_SUBST(COLLECT2_LIBS)
1245 # When building Ada code on Alpha, we need exc_resume which is usually in
1246 # -lexc. So test for it.
1249 AC_SEARCH_LIBS(exc_resume, exc)
1252 AC_SUBST(GNAT_LIBEXC)
1254 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1257 AC_SEARCH_LIBS(kstat_open, kstat)
1258 EXTRA_GCC_LIBS="$LIBS"
1260 AC_SUBST(EXTRA_GCC_LIBS)
1262 # Some systems put ldexp and frexp in libm instead of libc; assume
1263 # they're both in the same place. jcf-dump needs them.
1266 AC_SEARCH_LIBS(ldexp, m)
1271 # Some systems need dlopen
1274 AC_SEARCH_LIBS(dlopen, dl)
1279 # Use <inttypes.h> only if it exists,
1280 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1282 AC_MSG_CHECKING(for inttypes.h)
1283 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1284 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1285 [[#define __STDC_FORMAT_MACROS
1286 #include <sys/types.h>
1287 #include <inttypes.h>]],
1292 [gcc_cv_header_inttypes_h=yes],
1293 [gcc_cv_header_inttypes_h=no])])
1294 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1295 if test $gcc_cv_header_inttypes_h = yes; then
1296 AC_DEFINE(HAVE_INTTYPES_H, 1,
1297 [Define if you have a working <inttypes.h> header file.])
1300 # Look for the ZSTD package.
1303 AC_SUBST(ZSTD_INCLUDE)
1308 [AS_HELP_STRING([--with-zstd=PATH],
1309 [specify prefix directory for installed zstd library.
1310 Equivalent to --with-zstd-include=PATH/include
1311 plus --with-zstd-lib=PATH/lib])])
1312 AC_ARG_WITH(zstd-include,
1313 [AS_HELP_STRING([--with-zstd-include=PATH],
1314 [specify directory for installed zstd include files])])
1315 AC_ARG_WITH(zstd-lib,
1316 [AS_HELP_STRING([--with-zstd-lib=PATH],
1317 [specify directory for the installed zstd library])])
1318 case "x$with_zstd" in
1324 *) ZSTD_INCLUDE=$with_zstd/include
1325 ZSTD_LIB=$with_zstd/lib
1328 if test "x$with_zstd_include" != x; then
1329 ZSTD_INCLUDE=$with_zstd_include
1331 if test "x$with_zstd_lib" != x; then
1332 ZSTD_LIB=$with_zstd_lib
1334 if test "x$ZSTD_INCLUDE" != x \
1335 && test "x$ZSTD_INCLUDE" != xno; then
1336 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1338 if test "x$ZSTD_LIB" != x \
1339 && test "x$ZSTD_LIB" != xno; then
1340 ZSTD_LDFLAGS=-L$ZSTD_LIB
1343 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1344 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1346 AC_MSG_CHECKING(for zstd.h)
1347 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1348 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1349 [[#include <zstd.h>]])],
1350 [gcc_cv_header_zstd_h=yes],
1351 [gcc_cv_header_zstd_h=no])])
1352 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1353 if test $gcc_cv_header_zstd_h = yes; then
1354 AC_DEFINE(HAVE_ZSTD_H, 1,
1355 [Define if you have a working <zstd.h> header file.])
1358 # LTO can use zstd compression algorithm
1361 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1366 dnl Disabled until we have a complete test for buggy enum bitfields.
1367 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1369 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1370 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1371 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1372 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1373 putchar_unlocked putc_unlocked)
1374 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1375 popen sysconf strsignal getrusage nl_langinfo \
1376 gettimeofday mbstowcs wcswidth mmap setlocale \
1377 gcc_UNLOCKED_FUNCS madvise mallinfo)
1379 if test x$ac_cv_func_mbstowcs = xyes; then
1380 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1381 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1387 [gcc_cv_func_mbstowcs_works=yes],
1388 [gcc_cv_func_mbstowcs_works=no],
1389 [gcc_cv_func_mbstowcs_works=yes])])
1390 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1391 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1392 [Define this macro if mbstowcs does not crash when its
1393 first argument is NULL.])
1397 AC_CHECK_TYPE(ssize_t, int)
1398 AC_CHECK_TYPE(caddr_t, char *)
1400 GCC_AC_FUNC_MMAP_BLACKLIST
1404 # Under VMS, vfork works very differently than on Unix. The standard test
1405 # won't work, and it isn't easily adaptable. It makes more sense to
1407 ac_cv_func_vfork_works=yes
1414 # Until we have in-tree GNU iconv:
1416 if test -f "$LTLIBICONV"; then
1417 LIBICONV_DEP=$LTLIBICONV
1419 AC_SUBST(LIBICONV_DEP)
1425 # We will need to find libiberty.h and ansidecl.h
1426 saved_CFLAGS="$CFLAGS"
1427 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1428 saved_CXXFLAGS="$CXXFLAGS"
1429 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1431 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1432 # normal autoconf function for these. But force definition of
1433 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1434 # basename handling in libiberty.h.
1435 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1436 #undef HAVE_DECL_BASENAME
1437 #define HAVE_DECL_BASENAME 1
1438 #include "ansidecl.h"
1439 #include "system.h"])
1441 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1442 madvise stpcpy strnlen strsignal strverscmp \
1443 strtol strtoul strtoll strtoull setenv unsetenv \
1444 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1445 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1446 #include "ansidecl.h"
1447 #include "system.h"])
1449 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1450 #include "ansidecl.h"
1452 #ifdef HAVE_SYS_RESOURCE_H
1453 #include <sys/resource.h>
1457 gcc_AC_CHECK_DECLS(mallinfo, , ,[
1458 #include "ansidecl.h"
1460 #ifdef HAVE_MALLOC_H
1465 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1466 #include "ansidecl.h"
1468 #ifdef HAVE_SYS_RESOURCE_H
1469 #include <sys/resource.h>
1471 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1472 [Define to `long' if <sys/resource.h> doesn't define.])])
1474 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1475 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1476 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1477 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1478 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1479 #include "ansidecl.h"
1488 gcc_AC_CHECK_DECLS(times, , ,[
1489 #include "ansidecl.h"
1491 #ifdef HAVE_SYS_TIMES_H
1492 #include <sys/times.h>
1496 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1497 #include "ansidecl.h"
1502 # More time-related stuff.
1503 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1504 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1505 #include "ansidecl.h"
1507 #ifdef HAVE_SYS_TIMES_H
1508 #include <sys/times.h>
1510 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1511 if test $ac_cv_struct_tms = yes; then
1512 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1513 [Define if <sys/times.h> defines struct tms.])
1516 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1517 # revisit after autoconf 2.50.
1518 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1519 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1520 #include "ansidecl.h"
1522 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1523 if test $gcc_cv_type_clock_t = yes; then
1524 AC_DEFINE(HAVE_CLOCK_T, 1,
1525 [Define if <time.h> defines clock_t.])
1528 # Check if F_SETLKW is supported by fcntl.
1529 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1530 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1531 #include <fcntl.h>]], [[
1537 return fcntl (1, F_SETLKW, &fl);]])],
1538 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1539 if test $ac_cv_f_setlkw = yes; then
1540 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1541 [Define if F_SETLKW supported by fcntl.])
1544 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1545 CFLAGS="$saved_CFLAGS"
1546 CXXFLAGS="$saved_CXXFLAGS"
1548 # mkdir takes a single argument on some systems.
1549 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1557 # With Setjmp/Longjmp based exception handling.
1558 AC_ARG_ENABLE(sjlj-exceptions,
1559 [AS_HELP_STRING([--enable-sjlj-exceptions],
1560 [arrange to use setjmp/longjmp exception handling])],
1563 if test $enableval != yes; then
1564 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1569 force_sjlj_exceptions=yes],
1572 force_sjlj_exceptions=yes
1576 force_sjlj_exceptions=yes
1580 force_sjlj_exceptions=no
1583 if test $force_sjlj_exceptions = yes; then
1584 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1585 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1586 [Define 0/1 to force the choice for exception handling model.])
1589 # --------------------------------------------------------
1590 # Build, host, and target specific configuration fragments
1591 # --------------------------------------------------------
1593 # Collect build-machine-specific information.
1594 . ${srcdir}/config.build || exit 1
1596 # Collect host-machine-specific information.
1597 . ${srcdir}/config.host || exit 1
1601 # Collect target-machine-specific information.
1602 . ${srcdir}/config.gcc || exit 1
1604 extra_objs="${host_extra_objs} ${extra_objs}"
1605 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1607 # Default the target-machine variables that were not explicitly set.
1608 if test x"$tm_file" = x
1609 then tm_file=$cpu_type/$cpu_type.h; fi
1611 if test x"$extra_headers" = x
1612 then extra_headers=; fi
1614 if test x$md_file = x
1615 then md_file=$cpu_type/$cpu_type.md; fi
1617 if test x$out_file = x
1618 then out_file=$cpu_type/$cpu_type.c; fi
1620 if test x"$tmake_file" = x
1621 then tmake_file=$cpu_type/t-$cpu_type
1624 # Support --enable-initfini-array.
1625 if test x$enable_initfini_array != xno; then
1626 tm_file="${tm_file} initfini-array.h"
1629 if test x"$dwarf2" = xyes
1630 then tm_file="$tm_file tm-dwarf2.h"
1633 # Say what files are being used for the output code and MD file.
1634 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1635 echo "Using \`$srcdir/config/$md_file' as machine description file."
1637 # If any of the xm_file variables contain nonexistent files, warn
1638 # about them and drop them.
1641 for x in $build_xm_file; do
1642 if test -f $srcdir/config/$x
1644 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1650 for x in $host_xm_file; do
1651 if test -f $srcdir/config/$x
1653 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1659 for x in $xm_file; do
1660 if test -f $srcdir/config/$x
1662 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1668 for f in $tm_file; do
1671 if test $count = ax; then
1672 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1674 echo "Using the following target machine macro files:"
1675 for f in $tm_file; do
1676 echo " $srcdir/config/$f"
1680 if test x$use_long_long_for_widest_fast_int = xyes; then
1681 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1682 [Define to 1 if the 'long long' type is wider than 'long' but still
1683 efficiently supported by the host hardware.])
1686 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1687 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1689 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1690 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1693 for f in $host_xm_file; do
1696 if test $count = a; then
1698 elif test $count = ax; then
1699 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1701 echo "Using the following host machine macro files:"
1702 for f in $host_xm_file; do
1703 echo " $srcdir/config/$f"
1706 echo "Using ${out_host_hook_obj} for host machine hooks."
1708 if test "$host_xm_file" != "$build_xm_file"; then
1710 for f in $build_xm_file; do
1713 if test $count = a; then
1715 elif test $count = ax; then
1716 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1718 echo "Using the following build machine macro files:"
1719 for f in $build_xm_file; do
1720 echo " $srcdir/config/$f"
1725 if test -n "$configured_native_system_header_dir"; then
1726 native_system_header_dir=$configured_native_system_header_dir
1728 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1729 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1733 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1734 gcc_cv_mcontext_underscores,
1735 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1736 #include <sys/cdefs.h>
1737 #include <sys/signal.h>
1738 #include <ucontext.h>
1739 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1741 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1742 if test $gcc_cv_mcontext_underscores = yes; then
1743 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1744 [mcontext_t fields start with __])
1753 # Check if a valid thread package
1754 case ${enable_threads} in
1757 target_thread_file='single'
1761 target_thread_file='single'
1763 aix | dce | lynx | mipssde | posix | rtems | \
1764 single | tpf | vxworks | win32)
1765 target_thread_file=${enable_threads}
1768 echo "${enable_threads} is an unknown thread package" 1>&2
1773 if test x${thread_file} = x; then
1774 # No thread file set by target-specific clauses in config.gcc,
1775 # so use file chosen by default logic above
1776 thread_file=${target_thread_file}
1784 if test x$enable___cxa_atexit = xyes || \
1785 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1786 if test x$host = x$target; then
1788 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1789 # keyed to flag_use_cxa_atexit
1797 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1798 [echo "__cxa_atexit can't be enabled on this target"])
1802 # We can't check for __cxa_atexit when building a cross, so assume
1806 if test x$use_cxa_atexit = xyes; then
1807 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1808 [Define if you want to use __cxa_atexit, rather than atexit, to
1809 register C++ destructors for local statics and global objects.
1810 This is essential for fully standards-compliant handling of
1811 destructors, but requires __cxa_atexit in libc.])
1815 # Look for a file containing extra machine modes.
1816 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1817 extra_modes_file='$(srcdir)'/config/${extra_modes}
1818 AC_SUBST(extra_modes_file)
1819 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1820 [Define to the name of a file containing a list of extra machine modes
1821 for this architecture.])
1824 # Convert extra_options into a form suitable for Makefile use.
1827 for f in $extra_options; do
1828 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1829 all_opt_files="$all_opt_files $srcdir/config/$f"
1831 AC_SUBST(extra_opt_files)
1833 # auto-host.h is the file containing items generated by autoconf and is
1834 # the first file included by config.h.
1835 # If host=build, it is correct to have bconfig include auto-host.h
1836 # as well. If host!=build, we are in error and need to do more
1837 # work to find out the build config parameters.
1838 if test x$host = x$build
1840 build_auto=auto-host.h
1841 HAVE_AUTO_BUILD='# '
1843 # We create a subdir, then run autoconf in the subdir.
1844 # To prevent recursion we set host and build for the new
1845 # invocation of configure to the build for this invocation
1852 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1853 *) realsrcdir=../${srcdir};;
1855 # Clearing GMPINC is necessary to prevent host headers being
1856 # used by the build compiler. Defining GENERATOR_FILE stops
1857 # system.h from including gmp.h.
1858 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1859 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1860 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1861 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1862 ${realsrcdir}/configure \
1863 --enable-languages=${enable_languages-all} \
1864 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
1865 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
1866 --target=$target_alias --host=$build_alias \
1867 --build=$build_alias || exit # retaining $tempdir
1869 # We just finished tests for the build machine, so rename
1870 # the file auto-build.h in the gcc directory.
1871 mv auto-host.h ../auto-build.h
1874 build_auto=auto-build.h
1877 AC_SUBST(build_subdir)
1878 AC_SUBST(HAVE_AUTO_BUILD)
1880 tm_file="${tm_file} defaults.h"
1881 tm_p_file="${tm_p_file} tm-preds.h"
1882 tm_d_file="${tm_d_file} defaults.h"
1883 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1884 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1885 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1886 # put this back in temporarily.
1887 xm_file="auto-host.h ansidecl.h ${xm_file}"
1894 # Compile in configure arguments.
1895 if test -f configargs.h ; then
1896 # Being re-configured.
1897 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1898 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1899 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1900 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1903 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1906 # Double all backslashes and backslash all quotes to turn
1907 # gcc_config_arguments into a C string.
1908 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1909 $gcc_config_arguments
1911 gcc_config_arguments_str=`cat conftest.out`
1914 cat > configargs.h <<EOF
1915 /* Generated automatically. */
1916 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1917 static const char thread_model[] = "$thread_file";
1919 static const struct {
1920 const char *name, *value;
1921 } configure_default_options[] = $configure_default_options;
1926 gcc_BASEVER=`cat $srcdir/BASE-VER`
1927 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1928 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1929 if test -f $srcdir/REVISION ; then
1930 gcc_REVISION=`cat $srcdir/REVISION`
1934 cat > plugin-version.h <<EOF
1935 #include "configargs.h"
1937 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1938 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1939 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1940 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1942 static char basever[] = "$gcc_BASEVER";
1943 static char datestamp[] = "$gcc_DATESTAMP";
1944 static char devphase[] = "$gcc_DEVPHASE";
1945 static char revision[] = "$gcc_REVISION";
1947 /* FIXME plugins: We should make the version information more precise.
1948 One way to do is to add a checksum. */
1950 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1952 configuration_arguments};
1956 # Determine what GCC version number to use in filesystem paths.
1959 # Internationalization
1960 ZW_GNU_GETTEXT_SISTER_DIR
1962 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1963 # -liconv on the link line twice.
1964 case "$LIBINTL" in *$LIBICONV*)
1968 AC_ARG_ENABLE(secureplt,
1969 [AS_HELP_STRING([--enable-secureplt],
1970 [enable -msecure-plt by default for PowerPC])],
1973 AC_ARG_ENABLE(mingw-wildcard,
1974 [AS_HELP_STRING([--enable-mingw-wildcard],
1975 [Set whether to expand wildcard on command-line.
1976 Default to platform configuration])],
1977 [],[enable_mingw_wildcard=platform])
1978 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1979 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1980 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1981 [Value to set mingw's _dowildcard to.])])
1983 AC_ARG_ENABLE(large-address-aware,
1984 [AS_HELP_STRING([--enable-large-address-aware],
1985 [Link mingw executables with --large-address-aware])])
1986 AS_IF([test x"$enable_large_address_aware" = xyes],
1987 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1988 [Define if we should link mingw executables with --large-address-aware])])
1990 AC_ARG_ENABLE(leading-mingw64-underscores,
1991 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1992 [enable leading underscores on 64 bit mingw targets]),
1994 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1995 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1996 [Define if we should use leading underscore on 64 bit mingw targets])])
1999 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2002 AC_ARG_ENABLE(frame-pointer,
2003 [AS_HELP_STRING([--enable-frame-pointer],
2004 [enable -fno-omit-frame-pointer by default for x86])], [],
2007 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2008 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2009 enable_frame_pointer=no
2012 enable_frame_pointer=yes
2018 i[[34567]]86-*-* | x86_64-*-*)
2019 if test "x$enable_cld" = xyes; then
2020 tm_defines="${tm_defines} USE_IX86_CLD=1"
2022 if test "x$enable_frame_pointer" = xyes; then
2023 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2028 # Windows32 Registry support for specifying GCC installation paths.
2029 AC_ARG_ENABLE(win32-registry,
2030 [AS_HELP_STRING([--disable-win32-registry],
2031 [disable lookup of installation paths in the
2032 Registry on Windows hosts])
2033 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2034 AS_HELP_STRING([--enable-win32-registry=KEY],
2035 [use KEY instead of GCC version as the last portion
2036 of the registry key])],,)
2039 win32 | pe | cygwin* | mingw32*)
2040 if test "x$enable_win32_registry" != xno; then
2041 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2044 if test "x$enable_win32_registry" != xno; then
2045 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2046 [Define to 1 if installation paths should be looked up in the Windows
2047 Registry. Ignored on non-Windows hosts.])
2049 if test "x$enable_win32_registry" != xyes \
2050 && test "x$enable_win32_registry" != x; then
2051 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2052 [Define to be the last component of the Windows registry key under which
2053 to look for installation paths. The full key used will be
2054 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2055 The default is the GCC version number.])
2061 # Get an absolute path to the GCC top-level source directory
2062 holddir=`${PWDCMD-pwd}`
2064 topdir=`${PWDCMD-pwd}`
2067 # Conditionalize the makefile for this host machine.
2069 for f in ${host_xmake_file}
2071 if test -f ${srcdir}/config/$f
2073 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2077 # Conditionalize the makefile for this target machine.
2079 for f in ${tmake_file}
2081 if test -f ${srcdir}/config/$f
2083 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2086 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2088 out_object_file=`basename $out_file .c`.o
2089 common_out_object_file=`basename $common_out_file .c`.o
2091 tm_file_list="options.h"
2092 tm_include_list="options.h insn-constants.h"
2093 for f in $tm_file; do
2096 f=`echo $f | sed 's/^..//'`
2097 tm_file_list="${tm_file_list} $f"
2098 tm_include_list="${tm_include_list} $f"
2101 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2102 tm_include_list="${tm_include_list} $f"
2105 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2106 tm_include_list="${tm_include_list} config/$f"
2113 for f in $tm_p_file; do
2116 tm_p_file_list="${tm_p_file_list} $f"
2117 tm_p_include_list="${tm_p_include_list} $f"
2120 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2121 tm_p_include_list="${tm_p_include_list} config/$f"
2126 tm_d_include_list="options.h insn-constants.h"
2127 for f in $tm_d_file; do
2130 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2131 tm_d_include_list="${tm_d_include_list} $f"
2134 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2135 tm_d_include_list="${tm_d_include_list} config/$f"
2142 for f in $xm_file; do
2145 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2146 xm_include_list="${xm_include_list} $f"
2149 xm_file_list="${xm_file_list} $f"
2150 xm_include_list="${xm_include_list} $f"
2153 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2154 xm_include_list="${xm_include_list} config/$f"
2160 host_xm_include_list=
2161 for f in $host_xm_file; do
2164 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2165 host_xm_include_list="${host_xm_include_list} $f"
2168 host_xm_file_list="${host_xm_file_list} $f"
2169 host_xm_include_list="${host_xm_include_list} $f"
2172 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2173 host_xm_include_list="${host_xm_include_list} config/$f"
2179 for f in $build_xm_file; do
2182 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2183 build_xm_include_list="${build_xm_include_list} $f"
2185 auto-build.h | auto-host.h )
2186 build_xm_file_list="${build_xm_file_list} $f"
2187 build_xm_include_list="${build_xm_include_list} $f"
2190 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2191 build_xm_include_list="${build_xm_include_list} config/$f"
2196 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2197 # cross-compiler which does not use the native headers and libraries.
2198 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2199 CROSS= AC_SUBST(CROSS)
2200 ALL=all.internal AC_SUBST(ALL)
2201 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2202 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2204 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2205 test x$build != x$host || test "x$with_build_sysroot" != x; then
2206 if test "x$with_build_sysroot" != x; then
2207 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2209 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2212 if test x$host != x$target
2214 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2216 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2217 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2218 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2221 if test "x$with_build_sysroot" != "x"; then
2222 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2223 elif test "x$with_sysroot" = x; then
2224 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2225 elif test "x$with_sysroot" = xyes; then
2226 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2228 target_header_dir="${with_sysroot}${native_system_header_dir}"
2231 target_header_dir=${native_system_header_dir}
2234 # If this is a cross-compiler that does not
2235 # have its own set of headers then define
2238 # If this is using newlib, without having the headers available now,
2239 # then define inhibit_libc in LIBGCC2_CFLAGS.
2240 # This prevents libgcc2 from containing any code which requires libc
2242 : ${inhibit_libc=false}
2243 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2244 test x$with_newlib = xyes ; } &&
2245 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2248 AC_SUBST(inhibit_libc)
2250 # When building gcc with a cross-compiler, we need to adjust things so
2251 # that the generator programs are still built with the native compiler.
2252 # Also, we cannot run fixincludes.
2254 # These are the normal (build=host) settings:
2255 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2256 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2257 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2258 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2259 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2260 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2262 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2263 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2265 # And these apply if build != host, or we are generating coverage data
2266 if test x$build != x$host || test "x$coverage_flags" != x
2268 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2269 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2270 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2272 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2273 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2274 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2275 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2277 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2278 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2280 # Expand extra_headers to include complete path.
2281 # This substitutes for lots of t-* files.
2283 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2284 for file in ${extra_headers} ; do
2285 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2288 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2289 if test x"$use_gcc_tgmath" = xyes
2290 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2293 # Define collect2 in Makefile.
2294 case $host_can_use_collect2 in
2296 *) collect2='collect2$(exeext)' ;;
2298 AC_SUBST([collect2])
2300 # Add a definition of USE_COLLECT2 if system wants one.
2301 case $use_collect2 in
2302 no) use_collect2= ;;
2305 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2306 xm_defines="${xm_defines} USE_COLLECT2"
2307 case $host_can_use_collect2 in
2309 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2315 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2316 [Define to the name of the LTO plugin DSO that must be
2317 passed to the linker's -plugin=LIB option.])
2319 # ---------------------------
2320 # Assembler & linker features
2321 # ---------------------------
2323 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2324 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2325 # However when ld-new is first executed from the build tree, libtool will
2326 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2327 # to the build tree. While doing this we need to use the previous-stage
2328 # linker, or we have an infinite loop. The presence of a shell script as
2329 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2330 # the gcc/collect-ld script. So we need to know how libtool works, or
2331 # exec-tool will fail.
2333 m4_defun([_LT_CONFIG_COMMANDS], [])
2336 AC_SUBST(enable_fast_install)
2338 # Identify the assembler which will work hand-in-glove with the newly
2339 # built GCC, so that we can examine its features. This is the assembler
2340 # which will be driven by the driver program.
2342 # If build != host, and we aren't building gas in-tree, we identify a
2343 # build->target assembler and hope that it will have the same features
2344 # as the host->target assembler we'll be using.
2345 gcc_cv_gas_major_version=
2346 gcc_cv_gas_minor_version=
2347 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2349 m4_pattern_allow([AS_FOR_TARGET])dnl
2350 AS_VAR_SET_IF(gcc_cv_as,, [
2351 if test -x "$DEFAULT_ASSEMBLER"; then
2352 gcc_cv_as="$DEFAULT_ASSEMBLER"
2353 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2354 && test -f ../gas/Makefile \
2355 && test x$build = x$host; then
2356 gcc_cv_as=../gas/as-new$build_exeext
2357 elif test -x as$build_exeext; then
2358 # Build using assembler in the current directory.
2359 gcc_cv_as=./as$build_exeext
2360 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2361 gcc_cv_as="$AS_FOR_TARGET"
2363 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2366 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2367 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2368 case "$ORIGINAL_AS_FOR_TARGET" in
2369 ./as | ./as$build_exeext) ;;
2370 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2373 AC_MSG_CHECKING(what assembler to use)
2374 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2375 # Single tree build which includes gas. We want to prefer it
2376 # over whatever linker top-level may have detected, since
2377 # we'll use what we're building after installation anyway.
2378 AC_MSG_RESULT(newly built gas)
2380 _gcc_COMPUTE_GAS_VERSION
2381 in_tree_gas_is_elf=no
2382 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2383 || (grep 'obj_format = multi' ../gas/Makefile \
2384 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2386 in_tree_gas_is_elf=yes
2389 AC_MSG_RESULT($gcc_cv_as)
2395 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2396 [case "${enableval}" in
2402 install_gold_as_default=no
2404 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2405 [case "${enableval}" in
2407 install_gold_as_default=yes
2410 if test x${default_ld} != x; then
2411 install_gold_as_default=yes
2417 AC_MSG_ERROR([invalid --enable-gold argument])
2421 # Identify the linker which will work hand-in-glove with the newly
2422 # built GCC, so that we can examine its features. This is the linker
2423 # which will be driven by the driver program.
2425 # If build != host, and we aren't building gas in-tree, we identify a
2426 # build->target linker and hope that it will have the same features
2427 # as the host->target linker we'll be using.
2428 gcc_cv_gld_major_version=
2429 gcc_cv_gld_minor_version=
2430 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2431 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2432 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2434 AS_VAR_SET_IF(gcc_cv_ld,, [
2435 if test -x "$DEFAULT_LINKER"; then
2436 gcc_cv_ld="$DEFAULT_LINKER"
2437 elif test $install_gold_as_default = yes \
2438 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2439 && test -f ../gold/Makefile \
2440 && test x$build = x$host; then
2441 gcc_cv_ld=../gold/ld-new$build_exeext
2442 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2443 && test -f ../ld/Makefile \
2444 && test x$build = x$host; then
2445 gcc_cv_ld=../ld/ld-new$build_exeext
2446 elif test -x collect-ld$build_exeext; then
2447 # Build using linker in the current directory.
2448 gcc_cv_ld=./collect-ld$build_exeext
2449 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2450 gcc_cv_ld="$LD_FOR_TARGET"
2452 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2455 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2456 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2457 # if the PLUGIN_LD is set ld-new, just have it as ld
2458 # as that is the installed named.
2459 if test x$PLUGIN_LD_SUFFIX = xld-new \
2460 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2463 AC_ARG_WITH(plugin-ld,
2464 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2465 [if test x"$withval" != x; then
2466 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2467 PLUGIN_LD_SUFFIX="$withval"
2469 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2470 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2472 # Check to see if we are using gold instead of ld
2473 AC_MSG_CHECKING(whether we are using gold)
2475 if test x$gcc_cv_ld != x; then
2476 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2477 | grep "GNU gold" > /dev/null; then
2481 AC_MSG_RESULT($ld_is_gold)
2483 AC_MSG_CHECKING(gold linker with split stack support as non default)
2484 # Check to see if default ld is not gold, but gold is
2485 # available and has support for split stack. If gcc was configured
2486 # with gold then no checking is done.
2488 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2490 # For platforms other than powerpc64*, enable as appropriate.
2493 ld_gold=`which ${gcc_cv_ld}.gold`
2494 # Make sure this gold has minimal split stack support
2495 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2496 ld_vers=`$ld_gold --version | sed 1q`
2497 gold_vers=`echo $ld_vers | sed -n \
2498 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2500 # check that the gold version contains the complete split stack support
2501 # on powerpc64 big and little endian
2503 case "$gold_vers" in
2504 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2506 *) gold_non_default=no
2512 if test $gold_non_default = yes; then
2513 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2514 [Define if the gold linker supports split stack and is available as a non-default])
2517 AC_MSG_RESULT($gold_non_default)
2519 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2520 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2521 case "$ORIGINAL_LD_FOR_TARGET" in
2522 ./collect-ld | ./collect-ld$build_exeext) ;;
2523 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2526 AC_MSG_CHECKING(what linker to use)
2527 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2528 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2529 # Single tree build which includes ld. We want to prefer it
2530 # over whatever linker top-level may have detected, since
2531 # we'll use what we're building after installation anyway.
2532 AC_MSG_RESULT(newly built ld)
2534 in_tree_ld_is_elf=no
2535 if (grep 'EMUL = .*elf' ../ld/Makefile \
2536 || grep 'EMUL = .*linux' ../ld/Makefile \
2537 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2538 in_tree_ld_is_elf=yes
2539 elif test "$ld_is_gold" = yes; then
2540 in_tree_ld_is_elf=yes
2542 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
2545 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2546 if test x$gcc_cv_gld_version != x; then
2550 case $gcc_cv_gld_version in
2553 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2556 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2557 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2559 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2560 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2562 AC_MSG_RESULT($gcc_cv_ld)
2564 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2565 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2566 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2569 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2570 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2572 # Figure out what nm we will be using.
2573 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2574 AS_VAR_SET_IF(gcc_cv_nm,, [
2575 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2576 && test -f ../binutils/Makefile \
2577 && test x$build = x$host; then
2578 gcc_cv_nm=../binutils/nm-new$build_exeext
2579 elif test -x nm$build_exeext; then
2580 gcc_cv_nm=./nm$build_exeext
2581 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2582 gcc_cv_nm="$NM_FOR_TARGET"
2584 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2587 AC_MSG_CHECKING(what nm to use)
2588 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2589 # Single tree build which includes binutils.
2590 AC_MSG_RESULT(newly built nm)
2593 AC_MSG_RESULT($gcc_cv_nm)
2597 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2598 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2599 case "$ORIGINAL_NM_FOR_TARGET" in
2600 ./nm | ./nm$build_exeext) ;;
2601 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2605 # Figure out what objdump we will be using.
2606 AS_VAR_SET_IF(gcc_cv_objdump,, [
2607 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2608 && test -f ../binutils/Makefile \
2609 && test x$build = x$host; then
2610 # Single tree build which includes binutils.
2611 gcc_cv_objdump=../binutils/objdump$build_exeext
2612 elif test -x objdump$build_exeext; then
2613 gcc_cv_objdump=./objdump$build_exeext
2614 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2615 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2617 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2620 AC_MSG_CHECKING(what objdump to use)
2621 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2622 # Single tree build which includes binutils.
2623 AC_MSG_RESULT(newly built objdump)
2624 elif test x$gcc_cv_objdump = x; then
2625 AC_MSG_RESULT(not found)
2627 AC_MSG_RESULT($gcc_cv_objdump)
2630 # Figure out what readelf we will be using.
2631 AS_VAR_SET_IF(gcc_cv_readelf,, [
2632 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2633 && test -f ../binutils/Makefile \
2634 && test x$build = x$host; then
2635 # Single tree build which includes binutils.
2636 gcc_cv_readelf=../binutils/readelf$build_exeext
2637 elif test -x readelf$build_exeext; then
2638 gcc_cv_readelf=./readelf$build_exeext
2639 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2640 gcc_cv_readelf="$READELF_FOR_TARGET"
2642 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2645 AC_MSG_CHECKING(what readelf to use)
2646 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2647 # Single tree build which includes binutils.
2648 AC_MSG_RESULT(newly built readelf)
2649 elif test x$gcc_cv_readelf = x; then
2650 AC_MSG_RESULT(not found)
2652 AC_MSG_RESULT($gcc_cv_readelf)
2655 # Figure out what otool we will be using.
2656 AS_VAR_SET_IF(gcc_cv_otool,, [
2657 if test -x otool$build_exeext; then
2658 gcc_cv_otool=./otool$build_exeext
2659 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2660 gcc_cv_otool="$OTOOL_FOR_TARGET"
2662 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2665 AC_MSG_CHECKING(what otool to use)
2666 if test x$gcc_cv_otool = x; then
2667 AC_MSG_RESULT(not found)
2669 AC_MSG_RESULT($gcc_cv_otool)
2672 # Figure out what assembler alignment features are present.
2673 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2677 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2678 [Define if your assembler supports .balign and .p2align.])])
2680 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2683 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2684 [Define if your assembler supports specifying the maximum number
2685 of bytes to skip when using the GAS .p2align command.])])
2687 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2690 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2691 [Define if your assembler supports .literal16.])])
2693 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2695 [conftest_label1: .word 0
2697 conftest_label2: .word 0
2699 [if test x$gcc_cv_nm != x; then
2700 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2701 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2702 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2704 else gcc_cv_as_subsection_m1=yes
2706 rm -f conftest.nm1 conftest.nm2
2708 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2709 [Define if your assembler supports .subsection and .subsection -1 starts
2710 emitting at the beginning of your section.])])
2712 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2715 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2717 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2719 [ .weakref foobar, barfnot],,
2720 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2722 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2725 .NSUBSPA $CODE$,COMDAT],,
2726 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2728 # .hidden needs to be supported in both the assembler and the linker,
2729 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2730 # This is irritatingly difficult to feature test for; we have to check the
2731 # date string after the version number. If we've got an in-tree
2732 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2734 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2737 conftest_s=' .globl foobar,hidden'
2740 conftest_s=' .hidden foobar
2744 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2745 [elf,2,13,0],, [$conftest_s])
2748 # Darwin as has some visibility support, though with a different syntax.
2749 gcc_cv_as_hidden=yes
2753 # gnu_indirect_function type is an extension proposed at
2754 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2755 # selection of function implementation
2756 AC_ARG_ENABLE(gnu-indirect-function,
2757 [AS_HELP_STRING([--enable-gnu-indirect-function],
2758 [enable the use of the @gnu_indirect_function to glibc systems])],
2759 [case $enable_gnu_indirect_function in
2761 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2762 Valid choices are 'yes' and 'no'.]) ;;
2764 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2766 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2767 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2768 [Define if your system supports gnu indirect functions.])
2772 if test $in_tree_ld != yes ; then
2773 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2774 if echo "$ld_ver" | grep GNU > /dev/null; then
2775 if test x"$ld_is_gold" = xyes; then
2776 # GNU gold --version looks like this:
2778 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2780 # We extract the binutils version which is more familiar and specific
2781 # than the gold version.
2782 ld_vers=`echo $ld_ver | sed -n \
2783 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2785 # GNU ld --version looks like this:
2787 # GNU ld (GNU Binutils) 2.21.51.20110225
2788 ld_vers=`echo $ld_ver | sed -n \
2789 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2791 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2792 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2793 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2794 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2798 # Solaris 2 ld -V output looks like this for a regular version:
2800 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2802 # but test versions add stuff at the end:
2804 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2806 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2807 # numbers can be used in ld.so.1 feature checks even if a different
2808 # linker is configured.
2809 ld_ver=`$gcc_cv_ld -V 2>&1`
2810 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2811 ld_vers=`echo $ld_ver | sed -n \
2812 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2813 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2814 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2822 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2823 [[if test $in_tree_ld = yes ; then
2825 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2826 && test $in_tree_ld_is_elf = yes; then
2827 gcc_cv_ld_hidden=yes
2830 gcc_cv_ld_hidden=yes
2831 if test x"$ld_is_gold" = xyes; then
2833 elif echo "$ld_ver" | grep GNU > /dev/null; then
2835 mmix-knuth-mmixware)
2836 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2840 if test 0"$ld_date" -lt 20020404; then
2841 if test -n "$ld_date"; then
2842 # If there was date string, but was earlier than 2002-04-04, fail
2844 elif test -z "$ld_vers"; then
2845 # If there was no date string nor ld version number, something is wrong
2848 test -z "$ld_vers_patch" && ld_vers_patch=0
2849 if test "$ld_vers_major" -lt 2; then
2851 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2852 gcc_cv_ld_hidden="no"
2853 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2861 gcc_cv_ld_hidden=yes
2864 # Darwin ld has some visibility support.
2865 gcc_cv_ld_hidden=yes
2867 hppa64*-*-hpux* | ia64*-*-hpux*)
2868 gcc_cv_ld_hidden=yes
2871 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2872 # .symbolic was only added in Solaris 9 12/02.
2873 gcc_cv_ld_hidden=yes
2881 libgcc_visibility=no
2882 AC_SUBST(libgcc_visibility)
2883 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2884 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2885 libgcc_visibility=yes
2886 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2887 [Define if your assembler and linker support .hidden.])
2890 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2891 gcc_cv_ld_ro_rw_mix=unknown
2892 if test $in_tree_ld = yes ; then
2893 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2894 && test $in_tree_ld_is_elf = yes; then
2895 gcc_cv_ld_ro_rw_mix=read-write
2897 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2898 echo '.section myfoosect, "a"' > conftest1.s
2899 echo '.section myfoosect, "aw"' > conftest2.s
2900 echo '.byte 1' >> conftest2.s
2901 echo '.section myfoosect, "a"' > conftest3.s
2902 echo '.byte 0' >> conftest3.s
2903 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2904 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2905 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2906 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2907 conftest2.o conftest3.o > /dev/null 2>&1; then
2908 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2909 | sed -e '/myfoosect/!d' -e N`
2910 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2911 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2912 gcc_cv_ld_ro_rw_mix=read-only
2914 gcc_cv_ld_ro_rw_mix=read-write
2919 rm -f conftest.* conftest[123].*
2922 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2923 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2924 [Define if your linker links a mix of read-only
2925 and read-write sections into a read-write section.])
2927 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2929 gcc_AC_INITFINI_ARRAY
2931 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2932 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2940 [[# GAS versions before 2.11 do not support uleb128,
2941 # despite appearing to.
2942 # ??? There exists an elf-specific test that will crash
2943 # the assembler. Perhaps it's better to figure out whether
2944 # arbitrary sections are supported and try the test.
2945 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2946 if echo "$as_ver" | grep GNU > /dev/null; then
2947 as_vers=`echo $as_ver | sed -n \
2948 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2949 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2950 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2951 if test $as_major -eq 2 && test $as_minor -lt 11
2953 else gcc_cv_as_leb128=yes
2956 [AC_DEFINE(HAVE_AS_LEB128, 1,
2957 [Define if your assembler supports .sleb128 and .uleb128.])],
2958 [AC_DEFINE(HAVE_AS_LEB128, 0,
2959 [Define if your assembler supports .sleb128 and .uleb128.])])
2961 # Determine if an .eh_frame section is read-only.
2962 gcc_fn_eh_frame_ro () {
2963 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2964 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2965 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2968 # Check if we have assembler support for unwind directives.
2969 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2976 .cfi_escape 1, 2, 3, 4, 5
2980 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2981 # read-only and read-write sections, we need to make sure that the
2982 # assembler used emits read-write .eh_frame sections.
2983 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2984 gcc_cv_as_cfi_directive=yes
2985 elif test "x$gcc_cv_objdump" = x; then
2986 # No objdump, err on the side of caution.
2987 gcc_cv_as_cfi_directive=no
2989 if test x$gas = xyes; then
2997 sparc*-*-solaris2.*)
2998 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2999 if gcc_fn_eh_frame_ro $as_32_opt \
3000 || gcc_fn_eh_frame_ro $as_64_opt; then
3001 gcc_cv_as_cfi_directive=no
3003 gcc_cv_as_cfi_directive=yes
3006 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3007 # On Solaris/x86, make sure that GCC and assembler agree on using
3008 # read-only .eh_frame sections for 64-bit.
3009 if gcc_fn_eh_frame_ro $as_32_opt; then
3010 gcc_cv_as_cfi_directive=no
3011 elif gcc_fn_eh_frame_ro $as_64_opt; then
3012 gcc_cv_as_cfi_directive=yes
3014 gcc_cv_as_cfi_directive=no
3021 gcc_cv_as_cfi_directive=yes
3024 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3025 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3029 .cfi_adjust_cfa_offset 64
3031 .cfi_adjust_cfa_offset 128
3034 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3035 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3036 gcc_cv_as_cfi_advance_working=yes
3040 # no objdump, err on the side of caution
3041 gcc_cv_as_cfi_advance_working=no
3043 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3044 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3045 [`if test $gcc_cv_as_cfi_directive = yes \
3046 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3047 [Define 0/1 if your assembler supports CFI directives.])
3049 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3050 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3051 gcc_cv_as_cfi_personality_directive, ,,
3054 .cfi_personality 0, symbol
3056 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3057 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3058 [Define 0/1 if your assembler supports .cfi_personality.])
3060 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3061 gcc_cv_as_cfi_sections_directive, ,,
3063 .cfi_sections .debug_frame, .eh_frame
3067 win32 | pe | cygwin* | mingw32*)
3068 # Need to check that we generated the correct relocation for the
3069 # .debug_frame section. This was fixed for binutils 2.21.
3070 gcc_cv_as_cfi_sections_directive=no
3071 if test "x$gcc_cv_objdump" != x; then
3072 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3073 grep secrel > /dev/null; then
3074 gcc_cv_as_cfi_sections_directive=yes
3079 gcc_cv_as_cfi_sections_directive=yes
3082 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3083 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3084 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3085 [Define 0/1 if your assembler supports .cfi_sections.])
3087 # GAS versions up to and including 2.11.0 may mis-optimize
3089 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3097 .section .eh_frame,"aw",@progbits
3099 .4byte .LECIE1-.LSCIE1
3113 .4byte .LEFDE1-.LASFDE1
3115 .4byte .LASFDE1-__FRAME_BEGIN__
3123 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3124 cat > conftest.lit <<EOF
3125 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3126 0010 01000000 12000000 18000000 00000000 ................
3127 0020 08000000 04080000 0044 .........D @&t@
3129 cat > conftest.big <<EOF
3130 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3131 0010 00000001 00000012 00000018 00000000 ................
3132 0020 00000008 04000000 0844 .........D @&t@
3134 # If the assembler didn't choke, and we can objdump,
3135 # and we got the correct data, then succeed.
3136 # The text in the here-document typically retains its unix-style line
3137 # endings, while the output of objdump will use host line endings.
3138 # Therefore, use diff -b for the comparisons.
3139 if test x$gcc_cv_objdump != x \
3140 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3141 | tail -3 > conftest.got \
3142 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3143 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3145 gcc_cv_as_eh_frame=yes
3146 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3147 gcc_cv_as_eh_frame=buggy
3149 # Uh oh, what do we do now?
3150 gcc_cv_as_eh_frame=no
3153 if test $gcc_cv_as_eh_frame = buggy; then
3154 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3155 [Define if your assembler mis-optimizes .eh_frame data.])
3158 # Test if the assembler supports the section flag 'e' or #exclude for
3159 # specifying an excluded section.
3160 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3161 [2,22,51], [--fatal-warnings],
3164 if test $gcc_cv_as_section_exclude_e = no; then
3166 # Solaris as uses #exclude instead.
3170 conftest_s='.section "foo1", #exclude'
3172 i?86-*-solaris2* | x86_64-*-solaris2*)
3173 conftest_s='.section foo1, #exclude'
3178 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3182 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3183 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3184 [Define if your assembler supports specifying the exclude section flag.])
3186 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3187 [elf,2,12,0], [--fatal-warnings],
3188 [.section .rodata.str, "aMS", @progbits, 1])
3189 if test $gcc_cv_as_shf_merge = no; then
3190 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3191 [elf,2,12,0], [--fatal-warnings],
3192 [.section .rodata.str, "aMS", %progbits, 1])
3194 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3195 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3196 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3198 gcc_cv_ld_aligned_shf_merge=yes
3200 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3202 sparc*-*-solaris2.11*)
3203 if test x"$gnu_ld" = xno \
3204 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3205 gcc_cv_ld_aligned_shf_merge=no
3209 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3210 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3211 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3213 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3214 [.stabs "gcc2_compiled.",60,0,0,0],,
3215 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3216 [Define if your assembler supports .stabs.])])
3218 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3219 gcc_cv_as_comdat_group,
3220 [elf,2,16,0], [--fatal-warnings],
3221 [.section .text,"axG",@progbits,.foo,comdat])
3222 if test $gcc_cv_as_comdat_group = yes; then
3223 gcc_cv_as_comdat_group_percent=no
3224 gcc_cv_as_comdat_group_group=no
3226 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3227 gcc_cv_as_comdat_group_percent,
3228 [elf,2,16,0], [--fatal-warnings],
3229 [.section .text,"axG",%progbits,.foo,comdat])
3230 if test $gcc_cv_as_comdat_group_percent = yes; then
3231 gcc_cv_as_comdat_group_group=no
3234 # Sun as uses a completely different syntax.
3239 .group foo,".text%foo",#comdat
3240 .section ".text%foo", #alloc,#execinstr,#progbits
3245 i?86-*-solaris2* | x86_64-*-solaris2*)
3247 .group foo,.text%foo,#comdat
3248 .section .text%foo, "ax", @progbits
3254 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3255 gcc_cv_as_comdat_group_group,
3259 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3260 gcc_cv_as_comdat_group_group=no
3264 if test x"$ld_is_gold" = xyes; then
3266 elif test $in_tree_ld = yes ; then
3268 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3269 && test $in_tree_ld_is_elf = yes; then
3272 elif echo "$ld_ver" | grep GNU > /dev/null; then
3274 if test 0"$ld_date" -lt 20050308; then
3275 if test -n "$ld_date"; then
3276 # If there was date string, but was earlier than 2005-03-08, fail
3278 elif test "$ld_vers_major" -lt 2; then
3280 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3287 *-*-solaris2.1[1-9]*)
3289 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3290 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3293 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3294 # least ld version 1.2267.
3295 if test "$ld_vers_major" -gt 1; then
3297 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3299 elif test "$ld_vers_minor" -ge 2267; then
3304 # Assume linkers other than GNU ld don't support COMDAT group.
3310 # Allow overriding the automatic COMDAT group tests above.
3311 AC_ARG_ENABLE(comdat,
3312 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3313 [comdat_group="$enable_comdat"])
3314 if test $comdat_group = no; then
3315 gcc_cv_as_comdat_group=no
3316 gcc_cv_as_comdat_group_percent=no
3317 gcc_cv_as_comdat_group_group=no
3319 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3320 [`if test $gcc_cv_as_comdat_group = yes \
3321 || test $gcc_cv_as_comdat_group_percent = yes \
3322 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3323 [Define 0/1 if your assembler and linker support COMDAT groups.])
3325 # Restrict this test to Solaris/x86: other targets define this statically.
3327 i?86-*-solaris2* | x86_64-*-solaris2*)
3328 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3329 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3333 # Full support for hidden thunks in linkonce sections only appeared in
3334 # Solaris 11/OpenSolaris.
3335 *-*-solaris2.1[[1-9]]*)
3343 AC_MSG_RESULT($hidden_linkonce)
3344 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3345 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3346 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3350 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3355 .loc 1 1 0 is_stmt 1],,
3356 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3357 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3359 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3360 gcc_cv_as_discriminator,
3364 .loc 1 1 0 discriminator 1],,
3365 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3366 [Define if your assembler supports the .loc discriminator sub-directive.])])
3368 # Catch the newlib flag of the same name so we can gate GCC features on it.
3369 AC_ARG_ENABLE(newlib-nano-formatted-io,
3370 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3372 [case "${enableval}" in
3376 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3380 # Thread-local storage - the check is heavily parameterized.
3389 .section ".tdata","awT",@progbits
3392 ldq $27,__tls_get_addr($29) !literal!1
3393 lda $16,foo($29) !tlsgd!1
3394 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3395 ldq $27,__tls_get_addr($29) !literal!2
3396 lda $16,foo($29) !tlsldm!2
3397 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3398 ldq $1,foo($29) !gotdtprel
3399 ldah $2,foo($29) !dtprelhi
3400 lda $3,foo($2) !dtprello
3401 lda $4,foo($29) !dtprel
3402 ldq $1,foo($29) !gottprel
3403 ldah $2,foo($29) !tprelhi
3404 lda $3,foo($2) !tprello
3405 lda $4,foo($29) !tprel'
3408 tls_as_opt=--fatal-warnings
3412 add_s r0,r0, @foo@tpoff'
3416 cris-*-*|crisv32-*-*)
3418 .section ".tdata","awT",@progbits
3425 tls_as_opt=--fatal-warnings
3429 .section ".tdata","awT",@progbits
3441 .section ".tdata","awT",@progbits
3445 addil LT%foo-$tls_gdidx$,gp
3446 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3449 addil LT%foo-$tls_ldidx$,gp
3451 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3452 addil LR%foo-$tls_dtpoff$,%ret0
3453 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3455 addil LT%foo-$tls_ieoff$,gp
3456 ldw RT%foo-$tls_ieoff$(%r1),%t2
3459 addil LR%foo-$tls_leoff$,%t1
3460 ldo RR%foo-$tls_leoff$(%r1),%t2'
3463 tls_as_opt=--fatal-warnings
3467 .section ".tdata","awT",%progbits
3478 i[34567]86-*-* | x86_64-*-*)
3480 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3487 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3489 .section .tdata,"awt",@progbits'
3494 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3495 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3499 .section ".tdata","awT",@progbits'
3503 tls_as_opt="--fatal-warnings"
3507 conftest_s="$conftest_s
3511 leal foo@tlsgd(,%ebx,1), %eax
3512 leal foo@tlsldm(%ebx), %eax
3513 leal foo@dtpoff(%eax), %edx
3514 movl foo@gottpoff(%ebx), %eax
3515 subl foo@gottpoff(%ebx), %eax
3516 addl foo@gotntpoff(%ebx), %eax
3517 movl foo@indntpoff, %eax
3518 movl \$foo@tpoff, %eax
3519 subl \$foo@tpoff, %eax
3520 leal foo@ntpoff(%ecx), %eax"
3523 if test x$on_solaris = xyes; then
3525 yes) tls_as_opt="$tls_as_opt --64" ;;
3526 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3529 conftest_s="$conftest_s
3533 leaq foo@tlsgd(%rip), %rdi
3534 leaq foo@tlsld(%rip), %rdi
3535 leaq foo@dtpoff(%rax), %rdx
3536 movq foo@gottpoff(%rip), %rax
3537 movq \$foo@tpoff, %rax"
3543 .section ".tdata","awT",@progbits
3546 addl r16 = @ltoff(@dtpmod(foo#)), gp
3547 addl r17 = @ltoff(@dtprel(foo#)), gp
3548 addl r18 = @ltoff(@tprel(foo#)), gp
3549 addl r19 = @dtprel(foo#), gp
3550 adds r21 = @dtprel(foo#), r13
3551 movl r23 = @dtprel(foo#)
3552 addl r20 = @tprel(foo#), gp
3553 adds r22 = @tprel(foo#), r13
3554 movl r24 = @tprel(foo#)'
3557 tls_as_opt=--fatal-warnings
3561 .section .tdata,"awT",@progbits
3565 addik r5,r20,x@TLSGD
3566 addik r5,r20,x@TLSLDM'
3569 tls_as_opt='--fatal-warnings'
3573 .section .tdata,"awT",@progbits
3577 addiu $4, $28, %tlsgd(x)
3578 addiu $4, $28, %tlsldm(x)
3579 lui $4, %dtprel_hi(x)
3580 addiu $4, $4, %dtprel_lo(x)
3581 lw $4, %gottprel(x)($28)
3582 lui $4, %tprel_hi(x)
3583 addiu $4, $4, %tprel_lo(x)'
3586 tls_as_opt='-32 --fatal-warnings'
3590 .section .tdata,"awT",@progbits
3595 move.l x@TLSGD(%a5),%a0
3596 move.l x@TLSLDM(%a5),%a0
3597 move.l x@TLSLDO(%a5),%a0
3598 move.l x@TLSIE(%a5),%a0
3599 move.l x@TLSLE(%a5),%a0'
3602 tls_as_opt='--fatal-warnings'
3606 .section ".tdata","awT",@progbits'
3609 tls_as_opt="--fatal-warnings"
3613 .section ".tdata","awT",%progbits
3617 add x0, x0, #:tlsgd_lo12:x
3622 tls_as_opt='--fatal-warnings'
3626 .section ".tdata","awT",@progbits
3629 l.movhi r3, tpoffha(foo)
3631 l.lwz r4, tpofflo(foo)(r3)'
3634 tls_as_opt=--fatal-warnings
3638 .extern __get_tpointer
3656 .section ".tdata","awT",@progbits
3664 addi 3,2,ld0@got@tlsgd
3670 addi 3,2,x1@got@tlsld
3676 addis 9,3,x2@dtprel@ha
3677 addi 9,9,x2@dtprel@l
3680 ld 9,x3@got@dtprel(2)
3686 tls_as_opt="-a64 --fatal-warnings"
3690 .section ".tdata","awT",@progbits
3698 addi 3,31,ld0@got@tlsgd
3700 addi 3,31,x1@got@tlsld
3703 addis 9,3,x2@dtprel@ha
3704 addi 9,9,x2@dtprel@l
3705 lwz 9,x3@got@tprel(31)
3708 addis 9,2,x2@tprel@ha
3709 addi 9,9,x2@tprel@l'
3712 tls_as_opt="-a32 --fatal-warnings"
3716 .section .tdata,"awT",@progbits
3720 call __tls_get_addr'
3723 tls_as_opt='--fatal-warnings'
3727 .section ".tdata","awT",@progbits
3736 l %r1,foo@GOTNTPOFF(%r12)
3737 l %r1,0(%r1):tls_load:foo
3738 bas %r14,0(%r1,%r13):tls_gdcall:foo
3739 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3742 tls_as_opt="-m31 --fatal-warnings"
3746 .section ".tdata","awT",@progbits
3754 lg %r1,foo@GOTNTPOFF(%r12)
3755 larl %r1,foo@INDNTPOFF
3756 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3757 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3760 tls_as_opt="-m64 -Aesame --fatal-warnings"
3762 sh-*-* | sh[123456789lbe]*-*-*)
3764 .section ".tdata","awT",@progbits
3774 tls_as_opt=--fatal-warnings
3778 sparc*-sun-solaris2.*)
3785 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3787 .section ".tdata",#alloc,#write,#tls'
3792 .section ".tdata","awT",@progbits'
3795 tls_as_opt="-32 --fatal-warnings"
3797 conftest_s="$conftest_s
3800 sethi %tgd_hi22(foo), %o0
3801 add %o0, %tgd_lo10(foo), %o1
3802 add %l7, %o1, %o0, %tgd_add(foo)
3803 call __tls_get_addr, %tgd_call(foo)
3804 sethi %tldm_hi22(foo), %l1
3805 add %l1, %tldm_lo10(foo), %l2
3806 add %l7, %l2, %o0, %tldm_add(foo)
3807 call __tls_get_addr, %tldm_call(foo)
3808 sethi %tldo_hix22(foo), %l3
3809 xor %l3, %tldo_lox10(foo), %l4
3810 add %o0, %l4, %l5, %tldo_add(foo)
3811 sethi %tie_hi22(foo), %o3
3812 add %o3, %tie_lo10(foo), %o3
3813 ld [%l7 + %o3], %o2, %tie_ld(foo)
3814 add %g7, %o2, %o4, %tie_add(foo)
3815 sethi %tle_hix22(foo), %l1
3816 xor %l1, %tle_lox10(foo), %o5
3817 ld [%g7 + %o5], %o1"
3821 .section ".tdata","awT",@progbits
3824 addli r0, zero, tls_gd(foo)
3825 auli r0, zero, tls_gd_ha16(foo)
3826 addli r0, r0, tls_gd_lo16(foo)
3828 addli r0, zero, tls_ie(foo)
3829 auli r0, r0, tls_ie_ha16(foo)
3830 addli r0, r0, tls_ie_lo16(foo)'
3833 tls_as_opt="--fatal-warnings"
3837 .section ".tdata","awT",@progbits
3840 shl16insli r0, zero, hw0_last_tls_gd(foo)
3841 shl16insli r0, zero, hw1_last_tls_gd(foo)
3842 shl16insli r0, r0, hw0_tls_gd(foo)
3844 shl16insli r0, zero, hw1_last_tls_ie(foo)
3845 shl16insli r0, r0, hw0_tls_ie(foo)'
3848 tls_as_opt="--fatal-warnings"
3852 .section ".tdata","awT",@progbits
3855 movi a8, foo@TLSFUNC
3856 movi a10, foo@TLSARG
3857 callx8.tls a8, foo@TLSCALL'
3864 if test "x$enable_tls" = xno ; then
3865 : # TLS explicitly disabled.
3866 elif test "x$enable_tls" = xyes ; then
3867 set_have_as_tls=yes # TLS explicitly enabled.
3868 elif test -z "$tls_first_major"; then
3869 : # If we don't have a check, assume no support.
3871 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3872 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3873 [set_have_as_tls=yes])
3875 if test $set_have_as_tls = yes ; then
3876 AC_DEFINE(HAVE_AS_TLS, 1,
3877 [Define if your assembler and linker support thread-local storage.])
3880 # Target-specific assembler checks.
3882 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3883 gcc_cv_ld_static_dynamic=no
3884 gcc_cv_ld_static_option='-Bstatic'
3885 gcc_cv_ld_dynamic_option='-Bdynamic'
3886 if test $in_tree_ld = yes ; then
3887 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3888 gcc_cv_ld_static_dynamic=yes
3890 elif test x$gcc_cv_ld != x; then
3891 # Check if linker supports -Bstatic/-Bdynamic option
3892 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3893 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3894 gcc_cv_ld_static_dynamic=yes
3897 # AIX ld uses -b flags
3898 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3899 gcc_cv_ld_static_dynamic=yes
3900 gcc_cv_ld_static_option="-bstatic"
3901 gcc_cv_ld_dynamic_option="-bdynamic"
3903 # HP-UX ld uses -a flags to select between shared and archive.
3905 if test x"$gnu_ld" = xno; then
3906 gcc_cv_ld_static_dynamic=yes
3907 gcc_cv_ld_static_option="-aarchive_shared"
3908 gcc_cv_ld_dynamic_option="-adefault"
3911 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3913 gcc_cv_ld_static_dynamic=yes
3918 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3919 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3920 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3921 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3922 [Define to the linker option to disable use of shared objects.])
3923 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3924 [Define to the linker option to enable use of shared objects.])
3926 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3928 AC_MSG_CHECKING(linker --version-script option)
3929 gcc_cv_ld_version_script=no
3930 ld_version_script_option=''
3931 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3932 gcc_cv_ld_version_script=yes
3933 ld_version_script_option='--version-script'
3934 elif test x$gcc_cv_ld != x; then
3936 # Solaris 2 ld always supports -M. It also supports a subset of
3937 # --version-script since Solaris 11.4, but requires
3938 # -z gnu-version-script-compat to activate.
3940 gcc_cv_ld_version_script=yes
3941 ld_version_script_option='-M'
3945 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3946 AC_MSG_RESULT($gcc_cv_ld_version_script)
3947 AC_SUBST(ld_version_script_option)
3949 AC_MSG_CHECKING(linker soname option)
3951 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3952 gcc_cv_ld_soname=yes
3953 ld_soname_option='-soname'
3954 elif test x$gcc_cv_ld != x; then
3957 gcc_cv_ld_soname=yes
3958 ld_soname_option='-install_name'
3960 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3961 # ld compatiblity since some Solaris 10 update.
3963 gcc_cv_ld_soname=yes
3964 ld_soname_option='-h'
3968 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3969 AC_MSG_RESULT($gcc_cv_ld_soname)
3970 AC_SUBST(ld_soname_option)
3972 if test x"$demangler_in_ld" = xyes; then
3973 AC_MSG_CHECKING(linker --demangle support)
3974 gcc_cv_ld_demangle=no
3975 if test $in_tree_ld = yes; then
3976 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3977 gcc_cv_ld_demangle=yes
3979 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3980 # Check if the GNU linker supports --demangle option
3981 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3982 gcc_cv_ld_demangle=yes
3985 if test x"$gcc_cv_ld_demangle" = xyes; then
3986 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3987 [Define if your linker supports --demangle option.])
3989 AC_MSG_RESULT($gcc_cv_ld_demangle)
3992 AC_MSG_CHECKING(linker plugin support)
3994 if test -f liblto_plugin.la; then
3995 save_ld_ver="$ld_ver"
3996 save_ld_vers_major="$ld_vers_major"
3997 save_ld_vers_minor="$ld_vers_minor"
3998 save_ld_is_gold="$ld_is_gold"
4002 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4004 # FIXME: ld_is_gold?
4005 ld_vers_major="$gcc_cv_gld_major_version"
4006 ld_vers_minor="$gcc_cv_gld_minor_version"
4008 # Determine plugin linker version.
4009 # FIXME: Partial duplicate from above, generalize.
4011 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4012 if echo "$ld_ver" | grep GNU > /dev/null; then
4013 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4015 ld_vers=`echo $ld_ver | sed -n \
4016 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4018 ld_vers=`echo $ld_ver | sed -n \
4019 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4021 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4022 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4027 # Determine plugin support.
4028 if echo "$ld_ver" | grep GNU > /dev/null; then
4029 # Require GNU ld or gold 2.21+ for plugin support by default.
4030 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4032 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4033 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4038 ld_ver="$save_ld_ver"
4039 ld_vers_major="$save_ld_vers_major"
4040 ld_vers_minor="$save_ld_vers_minor"
4041 ld_is_gold="$save_ld_is_gold"
4043 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4044 [Define to the level of your linker's plugin support.])
4045 AC_MSG_RESULT($gcc_cv_lto_plugin)
4047 # Target OS-specific assembler checks.
4049 case "$target_os" in
4051 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4052 gcc_cv_as_mmacosx_version_min,,
4053 [-mmacosx-version-min=10.1], [.text],,
4054 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4055 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4059 # Target CPU-specific assembler checks.
4063 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4064 [-mabi=lp64], [.text],,,)
4065 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4066 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4067 [Define if your assembler supports the -mabi option.])
4069 if test x$with_abi = xilp32; then
4070 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4071 Upgrade the Assembler.])
4073 if test x"$with_multilib_list" = xdefault; then
4074 TM_MULTILIB_CONFIG=lp64
4076 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4077 for aarch64_multilib in ${aarch64_multilibs}; do
4078 case ${aarch64_multilib} in
4080 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4081 Upgrade the Assembler.])
4089 # Check if we have binutils support for relocations types needed by -fpic
4090 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4093 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4094 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4095 [Define if your assembler supports relocs needed by -fpic.])])
4096 # Enable Branch Target Identification Mechanism and Return Address
4097 # Signing by default.
4098 AC_ARG_ENABLE(standard-branch-protection,
4100 AS_HELP_STRING([--enable-standard-branch-protection],
4101 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4102 AS_HELP_STRING([--disable-standard-branch-protection],
4103 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4108 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4113 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4114 Valid choices are 'yes' and 'no'.])
4119 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4120 AC_ARG_ENABLE(fix-cortex-a53-835769,
4122 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4123 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4124 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4125 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4130 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4135 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4136 Valid choices are 'yes' and 'no'.])
4142 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4143 AC_ARG_ENABLE(fix-cortex-a53-843419,
4145 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4146 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4147 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4148 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4153 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4158 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4159 Valid choices are 'yes' and 'no'.])
4167 # All TARGET_ABI_OSF targets.
4168 alpha*-*-linux* | alpha*-*-*bsd*)
4169 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4170 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4173 extbl $3, $2, $3 !lituse_bytoff!1
4174 ldq $2, a($29) !literal!1
4175 ldq $4, b($29) !literal!2
4176 ldq_u $3, 0($2) !lituse_base!1
4177 ldq $27, f($29) !literal!5
4178 jsr $26, ($27), f !lituse_jsr!5
4179 ldah $29, 0($26) !gpdisp!3
4180 lda $0, c($29) !gprel
4181 ldah $1, d($29) !gprelhigh
4182 lda $1, d($1) !gprellow
4183 lda $29, 0($29) !gpdisp!3],,
4184 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4185 [Define if your assembler supports explicit relocations.])])
4186 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4187 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4190 ldq $27, a($29) !literal!1
4191 jsr $26, ($27), a !lituse_jsrdirect!1],,
4192 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4193 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4197 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4198 [--mlink-relax], [.text],,
4199 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4200 [Define if your avr assembler supports --mlink-relax option.])])
4202 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4204 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4205 [Define if your avr assembler supports -mrmw option.])])
4207 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4208 gcc_cv_as_avr_mgccisr,,
4214 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4215 [Define if your avr assembler supports -mgcc-isr option.])])
4217 # Check how default linker description file implements .rodata for
4218 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4219 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4220 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4221 cat > conftest.s <<EOF
4222 .section .rodata,"a",@progbits
4224 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4229 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4230 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4231 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4232 if test -s conftest.nm
4234 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4236 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4237 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4239 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4240 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4241 cat conftest.nm >&AS_MESSAGE_LOG_FD
4242 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4243 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4246 AC_MSG_RESULT(test failed)
4247 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4248 cat conftest.s >&AS_MESSAGE_LOG_FD
4249 AC_MSG_WARN([[see `config.log' for details]])
4251 rm -f conftest.s conftest.o conftest.elf conftest.nm
4255 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4256 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4257 [-no-mul-bug-abort], [.text],,
4258 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4259 [Define if your assembler supports the -no-mul-bug-abort option.])])
4263 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4265 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4266 [Define if your assembler supports -relax option.])])
4268 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4269 gcc_cv_as_sparc_gotdata_op,,
4276 sethi %gdop_hix22(foo), %g1
4277 xor %g1, %gdop_lox10(foo), %g1
4278 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4279 [if test x$gcc_cv_ld != x \
4280 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4281 if test x$gcc_cv_objdump != x; then
4282 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4283 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4284 gcc_cv_as_sparc_gotdata_op=no
4286 gcc_cv_as_sparc_gotdata_op=yes
4291 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4292 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4294 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4295 gcc_cv_as_sparc_ua_pcrel,,
4303 .uaword %r_disp32(foo)],
4304 [if test x$gcc_cv_ld != x \
4305 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4306 gcc_cv_as_sparc_ua_pcrel=yes
4309 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4310 [Define if your assembler and linker support unaligned PC relative relocs.])
4312 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4313 gcc_cv_as_sparc_ua_pcrel_hidden,,
4318 .uaword %r_disp32(foo)
4319 .byte 0x32, 0x33, 0x34
4324 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4325 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4326 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4327 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4328 if $gcc_cv_objdump -R conftest 2> /dev/null \
4329 | grep 'DISP32' > /dev/null 2>&1; then
4332 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4336 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4337 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4338 ]) # unaligned pcrel relocs
4340 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4341 gcc_cv_as_sparc_offsetable_lo10,,
4344 or %g1, %lo(ab) + 12, %g1
4345 or %g1, %lo(ab + 12), %g1],
4346 [if test x$gcc_cv_objdump != x \
4347 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4348 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4349 gcc_cv_as_sparc_offsetable_lo10=yes
4351 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4352 [Define if your assembler supports offsetable %lo().])])
4354 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4355 gcc_cv_as_sparc_fmaf,,
4358 .register %g2, #scratch
4359 .register %g3, #scratch
4361 fmaddd %f0, %f2, %f4, %f6
4362 addxccc %g1, %g2, %g3
4363 fsrl32 %f2, %f4, %f8
4364 fnaddd %f10, %f12, %f14],,
4365 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4366 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4368 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4369 gcc_cv_as_sparc_sparc4,,
4372 .register %g2, #scratch
4373 .register %g3, #scratch
4376 1: cwbneg %g2, %g3, 1f
4379 aes_kexpand0 %f4, %f6, %f8
4380 des_round %f38, %f40, %f42, %f44
4381 camellia_f %f54, %f56, %f58, %f60
4382 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4383 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4384 [Define if your assembler supports SPARC4 instructions.])])
4386 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4387 gcc_cv_as_sparc_sparc5,,
4390 .register %g2, #scratch
4391 .register %g3, #scratch
4394 fpadd8 %f0, %f2, %f4],,
4395 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4396 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4398 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4399 gcc_cv_as_sparc_sparc6,,
4402 .register %g2, #scratch
4403 .register %g3, #scratch
4406 fpsll64x %f0, %f2, %f4],,
4407 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4408 [Define if your assembler supports SPARC6 instructions.])])
4410 gcc_GAS_CHECK_FEATURE([LEON instructions],
4411 gcc_cv_as_sparc_leon,,
4414 .register %g2, #scratch
4415 .register %g3, #scratch
4419 casa [[%g2]] 0xb, %g3, %g1],,
4420 [AC_DEFINE(HAVE_AS_LEON, 1,
4421 [Define if your assembler supports LEON instructions.])])
4425 i[34567]86-*-* | x86_64-*-*)
4429 # Full C++ conformance when using a shared libstdc++-v3 requires some
4430 # support from the Cygwin DLL, which in more recent versions exports
4431 # wrappers to aid in interposing and redirecting operators new, delete,
4432 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4433 # are configuring for a version of Cygwin that exports the wrappers.
4434 if test x$host = x$target && test x$host_cpu = xi686; then
4435 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4437 # Can't check presence of libc functions during cross-compile, so
4438 # we just have to assume we're building for an up-to-date target.
4439 gcc_ac_cygwin_dll_wrappers=yes
4441 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4442 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4443 [Define if you want to generate code by default that assumes that the
4444 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4447 cygwin* | pe | mingw32*)
4448 # Recent binutils allows the three-operand form of ".comm" on PE. This
4449 # definition is used unconditionally to initialise the default state of
4450 # the target option variable that governs usage of the feature.
4451 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4452 [2,19,52],,[.comm foo,1,32])
4453 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4454 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4455 [Define if your assembler supports specifying the alignment
4456 of objects allocated using the GAS .comm command.])
4457 # Used for DWARF 2 in PE
4458 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4459 gcc_cv_as_ix86_pe_secrel32,
4465 [if test x$gcc_cv_ld != x \
4466 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4467 gcc_cv_as_ix86_pe_secrel32=yes
4470 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4471 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4472 # Test if the assembler supports the extended form of the .section
4473 # directive that specifies section alignment. LTO support uses this,
4474 # but normally only after installation, so we warn but don't fail the
4475 # configure if LTO is enabled but the assembler does not support it.
4476 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4477 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4478 if test x$gcc_cv_as_section_has_align != xyes; then
4479 case ",$enable_languages," in
4481 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4488 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4489 [-xbrace_comment=no], [.text],,
4490 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4491 [Define if your assembler supports -xbrace_comment option.])])
4493 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4494 gcc_cv_as_ix86_filds,,,
4495 [filds (%ebp); fists (%ebp)],,
4496 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4497 [Define if your assembler uses filds and fists mnemonics.])])
4499 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4500 gcc_cv_as_ix86_fildq,,,
4501 [fildq (%ebp); fistpq (%ebp)],,
4502 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4503 [Define if your assembler uses fildq and fistq mnemonics.])])
4505 gcc_GAS_CHECK_FEATURE([cmov syntax],
4506 gcc_cv_as_ix86_cmov_sun_syntax,,,
4507 [cmovl.l %edx, %eax],,
4508 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4509 [Define if your assembler supports the Sun syntax for cmov.])])
4511 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4512 gcc_cv_as_ix86_ffreep,,,
4514 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4515 [Define if your assembler supports the ffreep mnemonic.])])
4517 gcc_GAS_CHECK_FEATURE([.quad directive],
4518 gcc_cv_as_ix86_quad,,,
4520 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4521 [Define if your assembler supports the .quad directive.])])
4523 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4524 gcc_cv_as_ix86_sahf,,,
4527 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4528 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4530 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4531 gcc_cv_as_ix86_interunit_movq,,,
4535 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4536 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4537 [Define if your assembler supports interunit movq mnemonic.])
4539 gcc_GAS_CHECK_FEATURE([hle prefixes],
4540 gcc_cv_as_ix86_hle,,,
4541 [lock xacquire cmpxchg %esi, (%ecx)],,
4542 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4543 [Define if your assembler supports HLE prefixes.])])
4545 gcc_GAS_CHECK_FEATURE([swap suffix],
4546 gcc_cv_as_ix86_swap,,,
4547 [movl.s %esp, %ebp],,
4548 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4549 [Define if your assembler supports the swap suffix.])])
4551 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4552 gcc_cv_as_ix86_diff_sect_delta,,,
4560 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4561 [Define if your assembler supports the subtraction of symbols in different sections.])])
4563 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4564 gcc_cv_as_ix86_rep_lock_prefix,,,
4570 lock addl %edi, (%eax,%esi)
4571 lock orl $0, (%esp)],,
4572 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4573 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4575 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4576 gcc_cv_as_ix86_ud2,,,
4578 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4579 [Define if your assembler supports the 'ud2' mnemonic.])])
4581 # Enforce 32-bit output with gas and gld.
4582 if test x$gas = xyes; then
4583 as_ix86_gas_32_opt="--32"
4585 if echo "$ld_ver" | grep GNU > /dev/null; then
4586 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4587 ld_ix86_gld_32_opt="-melf_i386_sol2"
4589 ld_ix86_gld_32_opt="-melf_i386"
4593 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4594 gcc_cv_as_ix86_tlsgdplt,,
4595 [$as_ix86_gas_32_opt],
4596 [call tls_gd@tlsgdplt],
4597 [if test x$gcc_cv_ld != x \
4598 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4599 gcc_cv_as_ix86_tlsgdplt=yes
4602 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4603 [Define if your assembler and linker support @tlsgdplt.])])
4606 .section .tdata,"aw'$tls_section_flag'",@progbits
4608 .section .text,"ax",@progbits
4609 call tls_ld@tlsldmplt'
4611 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4612 gcc_cv_as_ix86_tlsldmplt,,
4613 [$as_ix86_gas_32_opt],
4615 [if test x$gcc_cv_ld != x \
4616 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4617 gcc_cv_as_ix86_tlsldmplt=yes
4620 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4621 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4622 [Define to 1 if your assembler and linker support @tlsldmplt.])
4625 .section .text,"ax",@progbits
4627 .type _start, @function
4629 leal value@tlsldm(%ebx), %eax
4630 call ___tls_get_addr@plt
4632 .section .tdata,"aw'$tls_section_flag'",@progbits
4633 .type value, @object
4635 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4636 gcc_cv_as_ix86_tlsldm,,
4637 [$as_ix86_gas_32_opt],
4639 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4640 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4641 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4642 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4643 gcc_cv_as_ix86_tlsldm=yes
4647 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4648 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4649 [Define to 1 if your assembler and linker support @tlsldm.])
4660 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4661 gcc_cv_as_ix86_got32x,,
4662 [$as_ix86_gas_32_opt],
4664 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4665 && test x$gcc_cv_readelf != x \
4666 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4667 | grep R_386_GOT32X > /dev/null 2>&1 \
4668 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4669 if $gcc_cv_objdump -dw conftest 2>&1 \
4670 | grep 0xffffff > /dev/null 2>&1; then
4671 gcc_cv_as_ix86_got32x=no
4673 gcc_cv_as_ix86_got32x=yes
4677 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4678 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4679 [Define 0/1 if your assembler and linker support @GOT.])
4681 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4682 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4683 [$as_ix86_gas_32_opt],
4689 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4690 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4691 [Define true if the assembler supports '.long foo@GOTOFF'.])
4694 .section .text,"ax",@progbits
4696 .type _start, @function
4698 leal ld@tlsldm(%ecx), %eax
4699 call *___tls_get_addr@GOT(%ecx)
4700 leal gd@tlsgd(%ecx), %eax
4701 call *___tls_get_addr@GOT(%ecx)
4703 .section .tdata,"aw'$tls_section_flag'",@progbits
4711 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4712 gcc_cv_as_ix86_tls_get_addr_via_got,,
4713 [$as_ix86_gas_32_opt],
4715 [if test x$gcc_cv_ld != x \
4716 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4717 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4720 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4721 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4722 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4726 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4727 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4729 addl r15 = @ltoffx(x#), gp
4731 ld8.mov r16 = [[r15]], x#
4733 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4734 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4742 gcc_GAS_CHECK_FEATURE([.machine directive support],
4743 gcc_cv_as_machine_directive,,,
4744 [ .machine ppc7400])
4745 if test x$gcc_cv_as_machine_directive != xyes; then
4746 echo "*** This target requires an assembler supporting \".machine\"" >&2
4747 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4748 test x$build = x$target && exit 1
4754 *-*-aix*) conftest_s=' .machine "pwr5"
4757 *-*-darwin*) conftest_s=' .text
4759 *) conftest_s=' .machine power4
4764 gcc_GAS_CHECK_FEATURE([mfcr field support],
4765 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4767 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4768 [Define if your assembler supports mfcr field.])])
4771 *-*-aix*) conftest_s=' .csect .text[[PR]]
4773 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4777 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4778 *) conftest_s=' .text
4780 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4783 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4784 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4786 [AC_DEFINE(HAVE_AS_REL16, 1,
4787 [Define if your assembler supports R_PPC_REL16 relocs.])])
4790 *-*-aix*) conftest_s=' .machine "pwr7"
4793 *) conftest_s=' .machine power7
4798 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4799 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4801 [AC_DEFINE(HAVE_AS_VSX, 1,
4802 [Define if your assembler supports VSX instructions.])])
4804 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4805 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4806 [.gnu_attribute 4,1],,
4807 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4808 [Define if your assembler supports .gnu_attribute.])])
4810 gcc_GAS_CHECK_FEATURE([tls marker support],
4811 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4812 [ bl __tls_get_addr(x@tlsgd)],,
4813 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4814 [Define if your assembler supports arg info for __tls_get_addr.])])
4816 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4817 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4818 [ .reloc .,R_PPC64_ENTRY; nop],,
4819 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4820 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4822 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4823 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4824 [ .reloc .,R_PPC_PLTSEQ; nop],,
4825 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4826 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4830 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4831 gcc_cv_as_aix_ref, [2,21,0],,
4832 [ .csect stuff[[rw]]
4838 [AC_DEFINE(HAVE_AS_REF, 1,
4839 [Define if your assembler supports .ref])])
4841 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4842 gcc_cv_as_aix_dwloc, [2,21,0],,
4847 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4848 [Define if your assembler supports AIX debug frame section label reference.])])
4854 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4855 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4856 [ lw $4,%gp_rel(foo)($4)],,
4857 [if test x$target_cpu_default = x
4858 then target_cpu_default=MASK_EXPLICIT_RELOCS
4859 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4862 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4863 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4864 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4865 [Define if the assembler understands -mno-shared.])])
4867 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4868 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4869 [.gnu_attribute 4,1],,
4870 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4871 [Define if your assembler supports .gnu_attribute.])])
4873 gcc_GAS_CHECK_FEATURE([.module support],
4874 gcc_cv_as_mips_dot_module,,[-32],
4877 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4878 [Define if your assembler supports .module.])])
4879 if test x$gcc_cv_as_mips_dot_module = xno \
4880 && test x$with_fp_32 != x; then
4882 [Requesting --with-fp-32= requires assembler support for .module.])
4885 gcc_GAS_CHECK_FEATURE([.micromips support],
4886 gcc_cv_as_micromips_support,,[--fatal-warnings],
4888 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4889 [Define if your assembler supports the .set micromips directive])])
4891 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4892 gcc_cv_as_mips_dtprelword, [2,18,0],,
4893 [.section .tdata,"awT",@progbits
4897 .dtprelword x+0x8000],,
4898 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4899 [Define if your assembler supports .dtprelword.])])
4901 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4902 gcc_cv_as_mips_dspr1_mult,,,
4912 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4913 [Define if your assembler supports DSPR1 mult.])])
4915 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4916 gcc_cv_as_ld_jalr_reloc=no
4917 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4918 if test $in_tree_ld = yes ; then
4919 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4920 && test $in_tree_ld_is_elf = yes; then
4921 gcc_cv_as_ld_jalr_reloc=yes
4923 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4924 echo ' .ent x' > conftest.s
4925 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4926 echo ' lw $25,%call16(y)($28)' >> conftest.s
4927 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4928 echo '1: jalr $25' >> conftest.s
4929 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4930 echo '1: jalr $25' >> conftest.s
4931 echo ' .end x' >> conftest.s
4932 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4933 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4934 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4935 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4936 gcc_cv_as_ld_jalr_reloc=yes
4942 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4943 if test x$target_cpu_default = x; then
4944 target_cpu_default=MASK_RELAX_PIC_CALLS
4946 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4949 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4951 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4952 [gcc_cv_ld_mips_personality_relaxation],
4953 [gcc_cv_ld_mips_personality_relaxation=no
4954 if test $in_tree_ld = yes ; then
4955 if test "$gcc_cv_gld_major_version" -eq 2 \
4956 -a "$gcc_cv_gld_minor_version" -ge 21 \
4957 -o "$gcc_cv_gld_major_version" -gt 2; then
4958 gcc_cv_ld_mips_personality_relaxation=yes
4960 elif test x$gcc_cv_as != x \
4961 -a x$gcc_cv_ld != x \
4962 -a x$gcc_cv_readelf != x ; then
4963 cat > conftest.s <<EOF
4965 .cfi_personality 0x80,indirect_ptr
4972 .section .data,"aw",@progbits
4976 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4977 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4978 if $gcc_cv_readelf -d conftest 2>&1 \
4979 | grep TEXTREL > /dev/null 2>&1; then
4981 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4982 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4985 gcc_cv_ld_mips_personality_relaxation=yes
4989 rm -f conftest.s conftest.o conftest])
4990 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4991 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4992 [Define if your linker can relax absolute .eh_frame personality
4993 pointers into PC-relative form.])
4996 gcc_GAS_CHECK_FEATURE([-mnan= support],
4997 gcc_cv_as_mips_nan,,
4999 [AC_DEFINE(HAVE_AS_NAN, 1,
5000 [Define if the assembler understands -mnan=.])])
5001 if test x$gcc_cv_as_mips_nan = xno \
5002 && test x$with_nan != x; then
5004 [Requesting --with-nan= requires assembler support for -mnan=])
5008 # Earlier GAS versions generically support .gnu_attribute, but the
5009 # msp430 assembler will not do anything with it.
5010 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5011 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5012 [.gnu_attribute 4,1],,
5013 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5014 [Define if your assembler supports .gnu_attribute.])])
5015 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5016 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5017 [.mspabi_attribute 4,1],,
5018 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5019 [Define if your assembler supports .mspabi_attribute.])])
5020 if test x$enable_newlib_nano_formatted_io = xyes; then
5021 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5022 configured with --enable-newlib-nano-formatted-io.])
5026 gcc_GAS_CHECK_FEATURE([.attribute support],
5027 gcc_cv_as_riscv_attribute, [2,32,0],,
5028 [.attribute stack_align,4],,
5029 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5030 [Define if your assembler supports .attribute.])])
5033 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5034 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5035 [.gnu_attribute 8,1],,
5036 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5037 [Define if your assembler supports .gnu_attribute.])])
5038 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5039 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5044 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5045 [Define if your assembler supports .machine and .machinemode.])])
5046 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5047 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5048 [ .machine z13+vx ],,
5049 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5050 [Define if your assembler supports architecture modifiers.])])
5051 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5052 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5053 [ vl %v24,0(%r15),3 ],,
5054 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5055 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5060 # Mips and HP-UX need the GNU assembler.
5061 # Linux on IA64 might be able to use the Intel assembler.
5064 mips*-*-* | *-*-hpux* )
5065 if test x$gas_flag = xyes \
5066 || test x"$host" != x"$build" \
5067 || test ! -x "$gcc_cv_as" \
5068 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5071 echo "*** This configuration requires the GNU assembler" >&2
5077 # ??? Not all targets support dwarf2 debug_line, even within a version
5078 # of gas. Moreover, we need to emit a valid instruction to trigger any
5079 # info to the output file. So, as supported targets are added to gas 2.11,
5080 # add some instruction here to (also) show we expect this might work.
5081 # ??? Once 2.11 is released, probably need to add first known working
5082 # version to the per-target configury.
5084 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5085 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5086 | tilegx | tilepro | visium | xstormy16 | xtensa)
5096 if test x"$insn" != x; then
5098 .file 1 \"conftest.s\"
5101 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5102 gcc_cv_as_dwarf2_debug_line,
5103 [elf,2,11,0],, [$conftest_s],
5104 [if test x$gcc_cv_objdump != x \
5105 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5106 | grep debug_line > /dev/null 2>&1; then
5107 gcc_cv_as_dwarf2_debug_line=yes
5108 elif test x$gcc_cv_otool != x \
5109 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5110 | grep debug_line > /dev/null 2>&1; then
5111 gcc_cv_as_dwarf2_debug_line=yes
5114 # The .debug_line file table must be in the exact order that
5115 # we specified the files, since these indices are also used
5116 # by DW_AT_decl_file. Approximate this test by testing if
5117 # the assembler bitches if the same index is assigned twice.
5118 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5119 gcc_cv_as_dwarf2_file_buggy,,,
5123 if test $gcc_cv_as_dwarf2_debug_line = yes \
5124 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5125 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5126 [Define if your assembler supports dwarf2 .file/.loc directives,
5127 and preserves file table indices exactly as given.])
5129 if test $gcc_cv_as_leb128 = yes; then
5131 .file 1 \"conftest.s\"
5132 .loc 1 3 0 view .LVU1
5138 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5139 gcc_cv_as_dwarf2_debug_view,
5140 [elf,2,27,0],,[$conftest_s],,
5141 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5142 [Define if your assembler supports views in dwarf2 .loc directives.])])
5146 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5147 gcc_cv_as_gdwarf2_flag,
5148 [elf,2,11,0], [--gdwarf2], [$insn],,
5149 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5150 [Define if your assembler supports the --gdwarf2 option.])])
5152 gcc_GAS_CHECK_FEATURE([--gstabs option],
5153 gcc_cv_as_gstabs_flag,
5154 [elf,2,11,0], [--gstabs], [$insn],,
5155 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5156 [Define if your assembler supports the --gstabs option.])])
5158 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5159 gcc_cv_as_debug_prefix_map_flag,
5160 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5161 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5162 [Define if your assembler supports the --debug-prefix-map option.])])
5165 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5166 gcc_cv_as_compress_debug,,,,
5167 [# gas compiled without zlib cannot compress debug sections and warns
5168 # about it, but still exits successfully. So check for this, too.
5169 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5171 gcc_cv_as_compress_debug=0
5172 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5173 # defaulting to the ELF gABI format.
5174 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5176 gcc_cv_as_compress_debug=2
5177 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5178 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5179 # Before binutils 2.26, gas only supported --compress-debug-options and
5180 # emitted the traditional GNU format.
5181 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5183 gcc_cv_as_compress_debug=1
5184 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5185 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5187 gcc_cv_as_compress_debug=0
5189 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5190 [Define to the level of your assembler's compressed debug section support.])
5191 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5192 [Define to the assembler option to enable compressed debug sections.])
5193 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5194 [Define to the assembler option to disable compressed debug sections.])
5196 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5199 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5200 [Define if your assembler supports .lcomm with an alignment field.])])
5202 if test x$with_sysroot = x && test x$host = x$target \
5203 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5204 && test "$prefix" != "NONE"; then
5205 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5206 [Define to PREFIX/include if cpp should also search that directory.])
5209 # Determine the version of glibc, if any, used on the target.
5210 AC_MSG_CHECKING([for target glibc version])
5211 AC_ARG_WITH([glibc-version],
5212 [AS_HELP_STRING([--with-glibc-version=M.N],
5213 [assume GCC used with glibc version M.N or later])], [
5214 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5215 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5216 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5218 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5220 glibc_version_major=0
5221 glibc_version_minor=0
5222 [if test -f $target_header_dir/features.h \
5223 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5224 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5225 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5226 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5228 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5229 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5230 [GNU C Library major version number used on the target, or 0.])
5231 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5232 [GNU C Library minor version number used on the target, or 0.])
5234 AC_ARG_ENABLE(gnu-unique-object,
5235 [AS_HELP_STRING([--enable-gnu-unique-object],
5236 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5237 [case $enable_gnu_unique_object in
5239 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5240 Valid choices are 'yes' and 'no'.]) ;;
5242 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5244 [.type foo, '$target_type_format_char'gnu_unique_object],,
5245 # We need to unquote above to to use the definition from config.gcc.
5246 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5247 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5249 if test x$enable_gnu_unique_object = xyes; then
5250 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5251 [Define if your assembler supports @gnu_unique_object.])
5254 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5255 [gcc_cv_as_line_zero],
5256 [gcc_cv_as_line_zero=no
5257 if test $in_tree_gas = yes; then
5258 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5259 elif test "x$gcc_cv_as" != x; then
5260 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5261 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5262 test "x`cat conftest.out`" = x
5264 gcc_cv_as_line_zero=yes
5266 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5267 cat conftest.s >&AS_MESSAGE_LOG_FD
5268 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5269 cat conftest.out >&AS_MESSAGE_LOG_FD
5271 rm -f conftest.o conftest.s conftest.out
5273 if test "x$gcc_cv_as_line_zero" = xyes; then
5274 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5275 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5278 AC_MSG_CHECKING(support for thin archives)
5279 thin_archive_support=no
5280 echo 'int main (void) { return 0; }' > conftest.c
5281 if ($AR --version | sed 1q | grep "GNU ar" \
5282 && $CC $CFLAGS -c conftest.c \
5283 && $AR rcT conftest.a conftest.o \
5284 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5285 thin_archive_support=yes
5287 rm -f conftest.c conftest.o conftest.a conftest
5288 AC_MSG_RESULT($thin_archive_support)
5289 AC_SUBST(thin_archive_support)
5291 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5292 gcc_cv_ld_eh_frame_hdr=no
5293 if test $in_tree_ld = yes ; then
5294 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5295 && test $in_tree_ld_is_elf = yes; then
5296 gcc_cv_ld_eh_frame_hdr=yes
5298 elif test x$gcc_cv_ld != x; then
5299 if echo "$ld_ver" | grep GNU > /dev/null; then
5300 # Check if linker supports --eh-frame-hdr option
5301 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5302 gcc_cv_ld_eh_frame_hdr=yes
5307 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5308 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5309 gcc_cv_ld_eh_frame_hdr=yes
5315 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5316 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5317 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5318 [Define if your linker supports .eh_frame_hdr.])
5320 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5322 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5323 gcc_cv_ld_eh_frame_ciev3=no
5324 if test $in_tree_ld = yes ; then
5325 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5326 && test $in_tree_ld_is_elf = yes; then
5327 gcc_cv_ld_eh_frame_ciev3=yes
5329 elif test x$gcc_cv_ld != x; then
5330 if echo "$ld_ver" | grep GNU > /dev/null; then
5331 gcc_cv_ld_eh_frame_ciev3=yes
5332 if test 0"$ld_date" -lt 20040513; then
5333 if test -n "$ld_date"; then
5334 # If there was date string, but was earlier than 2004-05-13, fail
5335 gcc_cv_ld_eh_frame_ciev3=no
5336 elif test "$ld_vers_major" -lt 2; then
5337 gcc_cv_ld_eh_frame_ciev3=no
5338 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5339 gcc_cv_ld_eh_frame_ciev3=no
5345 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5346 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5347 gcc_cv_ld_eh_frame_ciev3=yes
5353 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5354 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5355 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5356 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5358 AC_MSG_CHECKING(linker position independent executable support)
5360 if test $in_tree_ld = yes ; then
5362 # Full PIE support on Solaris was only introduced in gld 2.26.
5363 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5364 *) gcc_gld_pie_min_version=15 ;;
5366 if test "$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 \
5367 && test $in_tree_ld_is_elf = yes; then
5370 elif test x$gcc_cv_ld != x; then
5371 # Check if linker supports -pie option
5372 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5376 if echo "$ld_ver" | grep GNU > /dev/null \
5377 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5384 *-*-solaris2.1[[1-9]]*)
5385 # Solaris 11.3 added PIE support.
5386 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5393 if test x"$gcc_cv_ld_pie" = xyes; then
5394 AC_DEFINE(HAVE_LD_PIE, 1,
5395 [Define if your linker supports PIE option.])
5397 AC_MSG_RESULT($gcc_cv_ld_pie)
5399 AC_MSG_CHECKING(linker PIE support with copy reloc)
5400 gcc_cv_ld_pie_copyreloc=no
5401 if test $gcc_cv_ld_pie = yes ; then
5402 if test $in_tree_ld = yes ; then
5403 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5404 gcc_cv_ld_pie_copyreloc=yes
5406 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5407 # Check if linker supports -pie option with copy reloc
5409 i?86-*-linux* | x86_64-*-linux*)
5410 cat > conftest1.s <<EOF
5413 .type a_glob, @object
5418 cat > conftest2.s <<EOF
5421 .type main, @function
5423 movl %eax, a_glob(%rip)
5426 .section .data.rel,"aw",@progbits
5431 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5432 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5433 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5434 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5435 gcc_cv_ld_pie_copyreloc=yes
5437 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5442 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5443 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5444 [Define 0/1 if your linker supports -pie option with copy reloc.])
5445 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5447 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5448 gcc_cv_ld_eh_gc_sections=no
5449 if test $in_tree_ld = yes ; then
5450 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5451 && test $in_tree_ld_is_elf = yes; then
5452 gcc_cv_ld_eh_gc_sections=yes
5454 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5455 cat > conftest.s <<EOF
5458 .type _start, @function
5461 .size _start, .-_start
5462 .section .text.foo,"ax",@progbits
5463 .type foo, @function
5467 .section .gcc_except_table.foo,"a",@progbits
5470 .section .eh_frame,"a",@progbits
5473 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5474 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5475 | grep "gc-sections option ignored" > /dev/null; then
5476 gcc_cv_ld_eh_gc_sections=no
5477 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5478 | grep gcc_except_table > /dev/null; then
5479 gcc_cv_ld_eh_gc_sections=yes
5480 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5481 if test x$gcc_cv_as_comdat_group != xyes; then
5482 gcc_cv_ld_eh_gc_sections=no
5483 cat > conftest.s <<EOF
5486 .type _start, @function
5489 .size _start, .-_start
5490 .section .gnu.linkonce.t.foo,"ax",@progbits
5491 .type foo, @function
5495 .section .gcc_except_table.foo,"a",@progbits
5498 .section .eh_frame,"a",@progbits
5501 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5502 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5503 | grep "gc-sections option ignored" > /dev/null; then
5504 gcc_cv_ld_eh_gc_sections=no
5505 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5506 | grep gcc_except_table > /dev/null; then
5507 gcc_cv_ld_eh_gc_sections=yes
5513 rm -f conftest.s conftest.o conftest
5517 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5518 gcc_cv_ld_eh_gc_sections=no
5521 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5522 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5523 [Define if your linker supports garbage collection of
5524 sections in presence of EH frames.])
5526 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5528 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5529 gcc_cv_ld_eh_gc_sections_bug=no
5530 if test $in_tree_ld = yes ; then
5531 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5532 && test $in_tree_ld_is_elf = yes; then
5533 gcc_cv_ld_eh_gc_sections_bug=yes
5535 elif test x$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
5536 gcc_cv_ld_eh_gc_sections_bug=yes
5537 cat > conftest.s <<EOF
5540 .type _start, @function
5543 .size _start, .-_start
5544 .section .text.startup.foo,"ax",@progbits
5545 .type foo, @function
5549 .section .gcc_except_table.foo,"a",@progbits
5552 .section .eh_frame,"a",@progbits
5555 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5556 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5557 | grep "gc-sections option ignored" > /dev/null; then
5559 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5560 | grep gcc_except_table > /dev/null; then
5561 gcc_cv_ld_eh_gc_sections_bug=no
5564 rm -f conftest.s conftest.o conftest
5566 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5567 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5568 [Define if your linker has buggy garbage collection of
5569 sections support when .text.startup.foo like sections are used.])
5571 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5573 AC_MSG_CHECKING(linker for compressed debug sections)
5574 # gold/gld support compressed debug sections since binutils 2.19/2.21
5575 # In binutils 2.26, gld gained support for the ELF gABI format.
5576 if test $in_tree_ld = yes ; then
5577 gcc_cv_ld_compress_debug=0
5578 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5579 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5580 gcc_cv_ld_compress_debug=2
5581 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5582 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5583 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5584 gcc_cv_ld_compress_debug=3
5585 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5586 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5587 && test $in_tree_ld_is_elf = yes; then
5588 gcc_cv_ld_compress_debug=1
5590 elif echo "$ld_ver" | grep GNU > /dev/null; then
5591 if test "$ld_vers_major" -lt 2 \
5592 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5593 gcc_cv_ld_compress_debug=0
5594 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5595 gcc_cv_ld_compress_debug=1
5597 gcc_cv_ld_compress_debug=3
5598 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5600 if test $ld_is_gold = yes; then
5601 gcc_cv_ld_compress_debug=2
5602 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5608 # Introduced in Solaris 11.2.
5609 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5610 gcc_cv_ld_compress_debug=3
5611 gcc_cv_ld_compress_debug_option="-z compress-sections"
5613 gcc_cv_ld_compress_debug=0
5617 # Assume linkers other than GNU ld don't support compessed debug
5619 gcc_cv_ld_compress_debug=0
5624 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5625 [Define to the level of your linker's compressed debug section support.])
5626 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5627 [Define to the linker option to enable compressed debug sections.])
5628 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5630 if test x"$ld64_flag" = x"yes"; then
5632 # Set defaults for possibly untestable items.
5633 gcc_cv_ld64_export_dynamic=0
5635 if test "$build" = "$host"; then
5641 # On Darwin, because of FAT library support, it is often possible to execute
5642 # exes from compatible archs even when the host differs from the build system.
5643 case "$build","$host" in
5644 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5649 # If the configurer specified a minimum ld64 version to be supported, then use
5650 # that to determine feature support.
5651 if test x"${gcc_cv_ld64_version}" != x; then
5652 AC_MSG_CHECKING(ld64 specified version)
5653 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5654 AC_MSG_RESULT($gcc_cv_ld64_major)
5655 if test "$gcc_cv_ld64_major" -ge 236; then
5656 gcc_cv_ld64_export_dynamic=1
5658 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5659 # If the version was not specified, try to find it.
5660 AC_MSG_CHECKING(linker version)
5661 if test x"${gcc_cv_ld64_version}" = x; then
5662 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5664 AC_MSG_RESULT($gcc_cv_ld64_version)
5666 AC_MSG_CHECKING(linker for -export_dynamic support)
5667 gcc_cv_ld64_export_dynamic=1
5668 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5669 gcc_cv_ld64_export_dynamic=0
5671 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5674 if test x"${gcc_cv_ld64_version}" != x; then
5675 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5676 [Define to ld64 version.])
5679 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5680 [Define to 1 if ld64 supports '-export_dynamic'.])
5687 AC_CACHE_CHECK(linker --as-needed support,
5688 gcc_cv_ld_as_needed,
5689 [gcc_cv_ld_as_needed=no
5690 gcc_cv_ld_as_needed_option='--as-needed'
5691 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5692 if test $in_tree_ld = yes ; then
5693 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5694 && test $in_tree_ld_is_elf = yes; then
5695 gcc_cv_ld_as_needed=yes
5696 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5697 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5698 gcc_cv_ld_no_as_needed_option='--pop-state'
5701 elif test x$gcc_cv_ld != x; then
5702 # Check if linker supports --as-needed and --no-as-needed options
5703 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5704 gcc_cv_ld_as_needed=yes
5705 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5706 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5707 && echo "$ld_ver" | grep GNU > /dev/null \
5708 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5709 # Use these options only when both ld.bfd and ld.gold support
5710 # --push-state/--pop-state, which unfortunately wasn't added
5712 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5713 gcc_cv_ld_no_as_needed_option='--pop-state'
5716 case "$target:$gnu_ld" in
5718 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5720 gcc_cv_ld_as_needed=yes
5721 gcc_cv_ld_as_needed_option="-z ignore"
5722 gcc_cv_ld_no_as_needed_option="-z record"
5726 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5727 # dl_iterate_phdr, i.e. since Solaris 11.
5729 *-*-solaris2.1[[1-9]]*)
5731 i?86-*-* | x86_64-*-*)
5732 if echo "$ld_ver" | grep GNU > /dev/null; then
5733 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5734 gcc_cv_ld_as_needed=no
5740 gcc_cv_ld_as_needed=no
5744 if test x"$gcc_cv_ld_as_needed" = xyes; then
5745 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5746 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5747 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5748 [Define to the linker option to ignore unused dependencies.])
5749 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5750 [Define to the linker option to keep unused dependencies.])
5753 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5754 saved_LDFLAGS="$LDFLAGS"
5755 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5756 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5757 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5758 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5760 LDFLAGS="$saved_LDFLAGS"
5761 if test "x$gcc_cv_ld_clearcap" = xyes; then
5762 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5763 [Define if the linker supports clearing hardware capabilities via mapfile.])
5764 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5766 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5772 emul_name="-melf32lppc"
5775 emul_name="-melf32ppc"
5778 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5780 [gcc_cv_ld_ppc_attr=no
5781 if test x"$ld_is_gold" = xyes; then
5782 gcc_cv_ld_ppc_attr=yes
5783 elif test $in_tree_ld = yes ; then
5784 if test "$gcc_cv_gld_major_version" -eq 2 \
5785 -a "$gcc_cv_gld_minor_version" -ge 28 \
5786 -o "$gcc_cv_gld_major_version" -gt 2; then
5787 gcc_cv_ld_ppc_attr=yes
5789 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5790 # check that merging the long double .gnu_attribute doesn't warn
5791 cat > conftest1.s <<EOF
5794 cat > conftest2.s <<EOF
5797 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5798 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5799 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5800 && test ! -s conftest.err; then
5801 gcc_cv_ld_ppc_attr=yes
5803 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5806 if test x$gcc_cv_ld_ppc_attr = xyes; then
5807 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5808 [Define if your PowerPC linker has .gnu.attributes long double support.])
5813 case "$target:$tm_file" in
5814 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5817 emul_name="-melf64lppc"
5820 emul_name="-melf64ppc"
5823 emul_name="-melf64ppc_fbsd"
5826 AC_CACHE_CHECK(linker support for omitting dot symbols,
5827 gcc_cv_ld_no_dot_syms,
5828 [gcc_cv_ld_no_dot_syms=no
5829 if test x"$ld_is_gold" = xyes; then
5830 gcc_cv_ld_no_dot_syms=yes
5831 elif test $in_tree_ld = yes ; then
5832 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5833 gcc_cv_ld_no_dot_syms=yes
5835 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5836 cat > conftest1.s <<EOF
5840 cat > conftest2.s <<EOF
5841 .section ".opd","aw"
5846 .quad .LEfoo,.TOC.@tocbase,0
5852 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5853 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5854 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5855 gcc_cv_ld_no_dot_syms=yes
5857 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5860 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5861 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5862 [Define if your PowerPC64 linker only needs function descriptor syms.])
5865 AC_CACHE_CHECK(linker large toc support,
5866 gcc_cv_ld_large_toc,
5867 [gcc_cv_ld_large_toc=no
5868 if test x"$ld_is_gold" = xyes; then
5869 gcc_cv_ld_large_toc=yes
5870 elif test $in_tree_ld = yes ; then
5871 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5872 gcc_cv_ld_large_toc=yes
5874 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5875 cat > conftest.s <<EOF
5876 .section ".tbss","awT",@nobits
5882 addis 9,13,ie0@got@tprel@ha
5883 ld 9,ie0@got@tprel@l(9)
5885 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5886 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5887 gcc_cv_ld_large_toc=yes
5889 rm -f conftest conftest.o conftest.s
5892 if test x"$gcc_cv_ld_large_toc" = xyes; then
5893 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5894 [Define if your PowerPC64 linker supports a large TOC.])
5897 AC_CACHE_CHECK(linker toc pointer alignment,
5898 gcc_cv_ld_toc_align,
5899 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5900 cat > conftest.s <<EOF
5905 .section .data.rel.ro,"aw",@progbits
5910 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5911 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5912 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5914 rm -f conftest conftest.o conftest.s
5917 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5918 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5919 [Define to .TOC. alignment forced by your linker.])
5926 AC_CACHE_CHECK(linker large toc support,
5927 gcc_cv_ld_large_toc,
5928 [gcc_cv_ld_large_toc=no
5929 if test x$gcc_cv_as != x ; then
5930 cat > conftest.s <<EOF
5940 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5941 gcc_cv_ld_large_toc=yes
5943 rm -f conftest conftest.o conftest.s
5946 if test x"$gcc_cv_ld_large_toc" = xyes; then
5947 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5948 [Define if your PowerPC64 linker supports a large TOC.])
5953 AC_CACHE_CHECK(linker --build-id support,
5955 [gcc_cv_ld_buildid=no
5956 if test $in_tree_ld = yes ; then
5957 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5958 "$gcc_cv_gld_minor_version" -ge 18 -o \
5959 "$gcc_cv_gld_major_version" -gt 2 \
5960 && test $in_tree_ld_is_elf = yes; then
5961 gcc_cv_ld_buildid=yes
5963 elif test x$gcc_cv_ld != x; then
5964 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5965 gcc_cv_ld_buildid=yes
5968 if test x"$gcc_cv_ld_buildid" = xyes; then
5969 AC_DEFINE(HAVE_LD_BUILDID, 1,
5970 [Define if your linker supports --build-id.])
5973 AC_ARG_ENABLE(linker-build-id,
5974 [AS_HELP_STRING([--enable-linker-build-id],
5975 [compiler will always pass --build-id to linker])],
5977 enable_linker_build_id=no)
5979 if test x"$enable_linker_build_id" = xyes; then
5980 if test x"$gcc_cv_ld_buildid" = xyes; then
5981 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5982 [Define if gcc should always pass --build-id to linker.])
5984 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5988 # In binutils 2.21, GNU ld gained support for new emulations fully
5989 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5990 AC_CACHE_CHECK(linker *_sol2 emulation support,
5991 gcc_cv_ld_sol2_emulation,
5992 [gcc_cv_ld_sol2_emulation=no
5993 if test $in_tree_ld = yes ; then
5994 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5995 "$gcc_cv_gld_minor_version" -ge 21 -o \
5996 "$gcc_cv_gld_major_version" -gt 2 \
5997 && test $in_tree_ld_is_elf = yes; then
5998 gcc_cv_ld_sol2_emulation=yes
6000 elif test x$gcc_cv_ld != x; then
6001 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6002 grep _sol2 > /dev/null; then
6003 gcc_cv_ld_sol2_emulation=yes
6006 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6007 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6008 [Define if your linker supports the *_sol2 emulations.])
6011 AC_CACHE_CHECK(linker --sysroot support,
6013 [gcc_cv_ld_sysroot=no
6014 if test $in_tree_ld = yes ; then
6015 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6016 gcc_cv_ld_sysroot=yes
6018 elif test x$gcc_cv_ld != x; then
6019 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6020 gcc_cv_ld_sysroot=yes
6023 if test x"$gcc_cv_ld_sysroot" = xyes; then
6024 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6025 [Define if your linker supports --sysroot.])
6030 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6031 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6032 gcc_cv_solaris_crts,
6033 [gcc_cv_solaris_crts=no
6034 if test x$host != x$target; then
6035 if test "x$with_sysroot" = xyes; then
6036 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6038 target_sysroot="${with_sysroot}"
6041 target_libdir="$target_sysroot/usr/lib"
6042 # At the time they were added, gcrt1.o became a symlink for backwards
6043 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6045 i?86-*-solaris2* | x86_64-*-solaris2*)
6046 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6049 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6054 if test x$gcc_cv_solaris_crts = xyes; then
6055 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6056 [Define if the system-provided CRTs are present on Solaris.])
6059 AC_ARG_ENABLE(libssp,
6060 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6061 [case "${enableval}" in
6065 AC_MSG_ERROR([unknown libssp setting $enableval])
6069 # Test for stack protector support in target C library.
6070 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6071 gcc_cv_libc_provides_ssp,
6072 [gcc_cv_libc_provides_ssp=no
6073 if test "x$enable_libssp" = "xno"; then
6074 gcc_cv_libc_provides_ssp=yes
6075 elif test "x$enable_libssp" = "xyes"; then
6076 gcc_cv_libc_provides_ssp=no
6080 # All versions of musl provide stack protector
6081 gcc_cv_libc_provides_ssp=yes;;
6082 *-*-linux* | *-*-kfreebsd*-gnu)
6083 # glibc 2.4 and later provides __stack_chk_fail and
6084 # either __stack_chk_guard, or TLS access to stack guard canary.
6085 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6086 [if test -f $target_header_dir/features.h \
6087 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6088 $target_header_dir/features.h > /dev/null; then
6089 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6090 $target_header_dir/features.h > /dev/null && \
6091 test -f $target_header_dir/bits/uClibc_config.h && \
6092 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6093 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6094 gcc_cv_libc_provides_ssp=yes
6096 # all versions of Bionic support stack protector
6097 elif test -f $target_header_dir/sys/cdefs.h \
6098 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6099 $target_header_dir/sys/cdefs.h > /dev/null; then
6100 gcc_cv_libc_provides_ssp=yes
6104 # Avoid complicated tests (see
6105 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6106 # simply assert that glibc does provide this, which is true for all
6107 # realistically usable GNU/Hurd configurations.
6108 # All supported versions of musl provide it as well
6109 gcc_cv_libc_provides_ssp=yes;;
6110 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6111 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6112 [echo "no __stack_chk_fail on this target"])
6114 *) gcc_cv_libc_provides_ssp=no ;;
6118 if test x$gcc_cv_libc_provides_ssp = xyes; then
6119 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6120 [Define if your target C library provides stack protector support])
6123 # Check whether --enable-default-ssp was given.
6124 AC_ARG_ENABLE(default-ssp,
6125 [AS_HELP_STRING([--enable-default-ssp],
6126 [enable Stack Smashing Protection as default])],[
6127 if test x$gcc_cv_libc_provides_ssp = xyes; then
6129 ia64*-*-*) enable_default_ssp=no ;;
6130 *) enable_default_ssp=$enableval ;;
6133 enable_default_ssp=no
6135 enable_default_ssp=no)
6136 if test x$enable_default_ssp = xyes ; then
6137 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6138 [Define if your target supports default stack protector and it is enabled.])
6140 AC_SUBST([enable_default_ssp])
6142 # Test for <sys/sdt.h> on the target.
6143 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6144 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6146 if test -f $target_header_dir/sys/sdt.h; then
6148 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6149 [Define if your target C library provides sys/sdt.h])
6151 AC_MSG_RESULT($have_sys_sdt_h)
6153 # Check if TFmode long double should be used by default or not.
6154 # Some glibc targets used DFmode long double, but with glibc 2.4
6155 # and later they can use TFmode.
6157 powerpc*-*-linux* | \
6161 AC_ARG_WITH(long-double-128,
6162 [AS_HELP_STRING([--with-long-double-128],
6163 [use 128-bit long double by default])],
6164 gcc_cv_target_ldbl128="$with_long_double_128",
6165 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6166 [gcc_cv_target_ldbl128=no
6167 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6168 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6169 && gcc_cv_target_ldbl128=yes
6173 if test x$gcc_cv_target_ldbl128 = xyes; then
6174 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6175 [Define if TFmode long double should be the default])
6178 # Check if TFmode long double target should use the IBM extended double or IEEE
6179 # 128-bit floating point formats if long doubles are 128-bits long. The long
6180 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6181 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6183 AC_ARG_WITH([long-double-format],
6184 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6185 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6186 case "$target:$with_long_double_format" in
6187 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6190 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6191 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6193 power7 | power8 | power9 | power1*)
6197 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6198 supported if the default cpu is power7 or newer])
6199 with_long_double_format=""
6203 xpowerpc64*-*-linux*:*)
6204 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6205 with_long_double_format=""
6208 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6209 on 64-bit PowerPC VSX Linux systems])
6210 with_long_double_format=""
6215 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6216 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6217 gcc_cv_libc_provides_hwcap_in_tcb=no
6220 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6223 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6224 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6225 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6228 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6229 gcc_cv_target_dl_iterate_phdr=unknown
6232 # <link.h> needs both a dl_iterate_phdr declaration and support for
6233 # compilation with largefile support.
6234 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6235 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6236 gcc_cv_target_dl_iterate_phdr=yes
6238 gcc_cv_target_dl_iterate_phdr=no
6241 *-*-dragonfly* | *-*-freebsd*)
6242 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6243 gcc_cv_target_dl_iterate_phdr=yes
6245 gcc_cv_target_dl_iterate_phdr=no
6249 gcc_cv_target_dl_iterate_phdr=yes
6252 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6253 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6254 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6255 [Define if your target C library provides the `dl_iterate_phdr' function.])
6257 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6259 # We no longer support different GC mechanisms. Emit an error if
6260 # the user configures with --with-gc.
6262 [AS_HELP_STRING([--with-gc={page,zone}],
6263 [this option is not supported anymore. It used to choose
6264 the garbage collection mechanism to use with the compiler])],
6265 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6268 # Libraries to use on the host. This will normally be set by the top
6269 # level Makefile. Here we simply capture the value for our Makefile.
6270 if test -z "${HOST_LIBS+set}"; then
6275 # Use the system's zlib library.
6278 dnl Very limited version of automake's enable-maintainer-mode
6280 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6281 dnl maintainer-mode is disabled by default
6282 AC_ARG_ENABLE(maintainer-mode,
6283 [AS_HELP_STRING([--enable-maintainer-mode],
6284 [enable make rules and dependencies not useful
6285 (and sometimes confusing) to the casual installer])],
6286 maintainer_mode=$enableval,
6289 AC_MSG_RESULT($maintainer_mode)
6291 if test "$maintainer_mode" = "yes"; then
6298 dnl Whether to prevent multiple front-ends from linking at the same time
6300 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6301 AC_ARG_ENABLE(link-mutex,
6302 [AS_HELP_STRING([--enable-link-mutex],
6303 [avoid linking multiple front-ends at once to avoid thrashing
6304 on the build machine])],
6305 do_link_mutex=$enableval,
6307 AC_MSG_RESULT($do_link_mutex)
6309 if test "$do_link_mutex" = "yes"; then
6314 AC_SUBST(DO_LINK_MUTEX)
6320 # Make empty files to contain the specs and options for each language.
6321 # Then add #include lines to for a compiler that has specs and/or options.
6327 # These (without "all_") are set in each config-lang.in.
6328 # `language' must be a single word so is spelled singularly.
6331 all_outputs='Makefile'
6332 # List of language makefile fragments.
6334 # Additional files for gengtype
6335 all_gtfiles="$target_gtfiles"
6337 # These are the languages that are set in --enable-languages,
6338 # and are available in the GCC tree.
6339 all_selected_languages=
6341 # Add the language fragments.
6342 # Languages are added via two mechanisms. Some information must be
6343 # recorded in makefile variables, these are defined in config-lang.in.
6344 # We accumulate them and plug them into the main Makefile.
6345 # The other mechanism is a set of hooks for each of the main targets
6346 # like `clean', `install', etc.
6348 language_hooks="Make-hooks"
6350 for lang in ${srcdir}/*/config-lang.in
6353 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6355 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6356 if test "x$lang_alias" = x
6358 echo "$lang doesn't set \$language." 1>&2
6361 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6362 subdirs="$subdirs $subdir"
6364 # $gcc_subdir is where the gcc integration files are to be found
6365 # for a language, both for internal compiler purposes (compiler
6366 # sources implementing front-end to GCC tree converters), and for
6367 # build infrastructure purposes (Make-lang.in, etc.)
6369 # This will be <subdir> (relative to $srcdir) if a line like
6370 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6371 # is found in <langdir>/config-lang.in, and will remain <langdir>
6374 # Except for the language alias (fetched above), the regular
6375 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6376 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6377 # only this and the language alias.
6379 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6380 if [ "$gcc_subdir" = "" ]; then
6381 gcc_subdir="$subdir"
6384 case ",$enable_languages," in
6386 all_selected_languages="$all_selected_languages $lang_alias"
6387 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6388 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6400 . ${srcdir}/$gcc_subdir/config-lang.in
6401 if test "x$language" = x
6403 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6408 case ",$enable_languages," in
6411 for i in $subdir_requires; do
6412 test -f "${srcdir}/$i/config-lang.in" && continue
6420 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6421 if test -f $srcdir/$gcc_subdir/lang.opt; then
6422 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6423 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6425 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6426 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6428 all_languages="$all_languages $language"
6429 all_compilers="$all_compilers $compilers"
6430 all_outputs="$all_outputs $outputs"
6431 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6432 case ",$enable_languages," in
6434 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6436 AC_SUBST(enable_lto)
6443 for language in $all_selected_languages
6445 check_languages="$check_languages check-$language"
6449 for language in $all_selected_languages
6451 selftest_languages="$selftest_languages selftest-$language"
6454 # We link each language in with a set of hooks, reached indirectly via
6455 # lang.${target}. Only do so for selected languages.
6459 target_list="all.cross start.encap rest.encap tags \
6460 install-common install-man install-info install-pdf install-html dvi \
6461 pdf html uninstall info man srcextra srcman srcinfo \
6462 mostlyclean clean distclean maintainer-clean install-plugin"
6464 for t in $target_list
6467 for lang in $all_selected_languages
6471 echo "lang.$t: $x" >> Make-hooks
6475 # Option include files
6478 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6479 option_includes="option-includes.mk"
6480 AC_SUBST_FILE(option_includes)
6488 echo "dir ." > .gdbinit
6489 echo "dir ${srcdir}" >> .gdbinit
6490 if test x$gdb_needs_out_file_path = xyes
6492 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6494 if test "x$subdirs" != x; then
6497 echo "dir ${srcdir}/$s" >> .gdbinit
6500 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6501 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6503 # Put a breakpoint on __asan_report_error to help with debugging buffer
6506 *-fsanitize=address*)
6507 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6511 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6512 AC_SUBST(gcc_tooldir)
6515 # Find a directory in which to install a shared libgcc.
6517 AC_ARG_ENABLE(version-specific-runtime-libs,
6518 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6519 [specify that runtime libraries should be
6520 installed in a compiler-specific directory])])
6522 # Substitute configuration variables
6525 AC_SUBST(all_compilers)
6526 AC_SUBST(all_gtfiles)
6527 AC_SUBST(all_lang_makefrags)
6528 AC_SUBST(all_languages)
6529 AC_SUBST(all_selected_languages)
6530 AC_SUBST(build_exeext)
6531 AC_SUBST(build_install_headers_dir)
6532 AC_SUBST(build_xm_file_list)
6533 AC_SUBST(build_xm_include_list)
6534 AC_SUBST(build_xm_defines)
6535 AC_SUBST(build_file_translate)
6536 AC_SUBST(check_languages)
6537 AC_SUBST(selftest_languages)
6538 AC_SUBST(cpp_install_dir)
6539 AC_SUBST(xmake_file)
6540 AC_SUBST(tmake_file)
6541 AC_SUBST(TM_ENDIAN_CONFIG)
6542 AC_SUBST(TM_MULTILIB_CONFIG)
6543 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6544 AC_SUBST(extra_gcc_objs)
6545 AC_SUBST(user_headers_inc_next_pre)
6546 AC_SUBST(user_headers_inc_next_post)
6547 AC_SUBST(extra_headers_list)
6548 AC_SUBST(extra_objs)
6549 AC_SUBST(extra_programs)
6550 AC_SUBST(float_h_file)
6551 AC_SUBST(gcc_config_arguments)
6552 AC_SUBST(gcc_gxx_include_dir)
6553 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6554 AC_SUBST(host_exeext)
6555 AC_SUBST(host_xm_file_list)
6556 AC_SUBST(host_xm_include_list)
6557 AC_SUBST(host_xm_defines)
6558 AC_SUBST(out_host_hook_obj)
6560 AC_SUBST(lang_opt_files)
6561 AC_SUBST(lang_specs_files)
6562 AC_SUBST(lang_tree_files)
6563 AC_SUBST(local_prefix)
6565 AC_SUBST(objc_boehm_gc)
6567 AC_SUBST(out_object_file)
6568 AC_SUBST(common_out_file)
6569 AC_SUBST(common_out_object_file)
6570 AC_SUBST(tm_file_list)
6571 AC_SUBST(tm_include_list)
6572 AC_SUBST(tm_defines)
6573 AC_SUBST(tm_p_file_list)
6574 AC_SUBST(tm_p_include_list)
6575 AC_SUBST(tm_d_file_list)
6576 AC_SUBST(tm_d_include_list)
6577 AC_SUBST(xm_file_list)
6578 AC_SUBST(xm_include_list)
6579 AC_SUBST(xm_defines)
6580 AC_SUBST(use_gcc_stdint)
6581 AC_SUBST(c_target_objs)
6582 AC_SUBST(cxx_target_objs)
6583 AC_SUBST(fortran_target_objs)
6584 AC_SUBST(d_target_objs)
6585 AC_SUBST(target_cpu_default)
6587 AC_SUBST_FILE(language_hooks)
6590 if test x${build} = x${host} ; then
6591 if test x${host} = x${target} ; then
6592 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6594 echo "Links are now set up to build a cross-compiler" 1>&2
6595 echo " from ${host} to ${target}." 1>&2
6598 if test x${host} = x${target} ; then
6599 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6600 echo " for ${target}." 1>&2
6602 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6603 echo " from ${host} to ${target}." 1>&2
6607 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6608 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6610 AC_ARG_VAR(ISLLIBS,[How to link isl])
6611 AC_ARG_VAR(ISLINC,[How to find isl include files])
6612 if test "x${ISLLIBS}" != "x" ; then
6613 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6617 AC_SUBST(pluginlibs)
6618 AC_SUBST(enable_plugin)
6619 if test x"$enable_plugin" = x"yes"; then
6620 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6624 # Enable --enable-host-shared
6625 AC_ARG_ENABLE(host-shared,
6626 [AS_HELP_STRING([--enable-host-shared],
6627 [build host code as shared libraries])],
6628 [PICFLAG=-fPIC], [PICFLAG=])
6629 AC_SUBST(enable_host_shared)
6633 AC_ARG_ENABLE(libquadmath-support,
6634 [AS_HELP_STRING([--disable-libquadmath-support],
6635 [disable libquadmath support for Fortran])],
6636 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6637 ENABLE_LIBQUADMATH_SUPPORT=yes)
6638 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6639 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6640 [Define to 1 to enable libquadmath support])
6644 # Specify what hash style to use by default.
6645 AC_ARG_WITH([linker-hash-style],
6646 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6647 [specify the linker hash style])],
6648 [case x"$withval" in
6650 LINKER_HASH_STYLE=sysv
6653 LINKER_HASH_STYLE=gnu
6656 LINKER_HASH_STYLE=both
6659 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6662 [LINKER_HASH_STYLE=''])
6663 if test x"${LINKER_HASH_STYLE}" != x; then
6664 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6665 [The linker hash style])
6668 # Specify what should be the default of -fdiagnostics-color option.
6669 AC_ARG_WITH([diagnostics-color],
6670 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6671 [specify the default of -fdiagnostics-color option
6672 auto-if-env stands for -fdiagnostics-color=auto if
6673 GCC_COLOR environment variable is present and
6674 -fdiagnostics-color=never otherwise])],
6675 [case x"$withval" in
6677 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6680 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6683 DIAGNOSTICS_COLOR_DEFAULT=-1
6686 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6689 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6692 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6693 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6694 [The default for -fdiagnostics-color option])
6696 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6697 # of jit/jit-playback.c.
6698 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6699 echo "gcc_driver_version: ${gcc_driver_version}"
6700 cat > gcc-driver-name.h <<EOF
6701 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6704 # Check whether --enable-default-pie was given.
6705 AC_ARG_ENABLE(default-pie,
6706 [AS_HELP_STRING([--enable-default-pie],
6707 [enable Position Independent Executable as default])],
6708 enable_default_pie=$enableval,
6709 enable_default_pie=no)
6710 if test x$enable_default_pie = xyes ; then
6711 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6712 [Define if your target supports default PIE and it is enabled.])
6714 AC_SUBST([enable_default_pie])
6716 # Check if -fno-PIE works.
6717 AC_CACHE_CHECK([for -fno-PIE option],
6719 [saved_CXXFLAGS="$CXXFLAGS"
6720 CXXFLAGS="$CXXFLAGS -fno-PIE"
6721 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6722 [gcc_cv_c_no_fpie=yes],
6723 [gcc_cv_c_no_fpie=no])
6724 CXXFLAGS="$saved_CXXFLAGS"])
6725 if test "$gcc_cv_c_no_fpie" = "yes"; then
6726 NO_PIE_CFLAGS="-fno-PIE"
6728 AC_SUBST([NO_PIE_CFLAGS])
6730 # Check if -no-pie works.
6731 AC_CACHE_CHECK([for -no-pie option],
6733 [saved_LDFLAGS="$LDFLAGS"
6734 LDFLAGS="$LDFLAGS -no-pie"
6735 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6736 [gcc_cv_no_pie=yes],
6738 LDFLAGS="$saved_LDFLAGS"])
6739 if test "$gcc_cv_no_pie" = "yes"; then
6740 NO_PIE_FLAG="-no-pie"
6742 AC_SUBST([NO_PIE_FLAG])
6744 # Check linker supports '-z bndplt'
6745 ld_bndplt_support=no
6746 AC_MSG_CHECKING(linker -z bndplt option)
6747 if test x"$ld_is_gold" = xno; then
6748 if test $in_tree_ld = yes ; then
6749 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6750 ld_bndplt_support=yes
6752 elif test x$gcc_cv_ld != x; then
6753 # Check if linker supports -a bndplt option
6754 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6755 ld_bndplt_support=yes
6759 if test x"$ld_bndplt_support" = xyes; then
6760 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6761 [Define if your linker supports -z bndplt])
6763 AC_MSG_RESULT($ld_bndplt_support)
6765 # Check linker supports '--push-state'/'--pop-state'
6766 ld_pushpopstate_support=no
6767 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6768 if test x"$ld_is_gold" = xno; then
6769 if test $in_tree_ld = yes ; then
6770 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6771 ld_pushpopstate_support=yes
6773 elif test x$gcc_cv_ld != x; then
6774 # Check if linker supports --push-state/--pop-state options
6775 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6776 ld_pushpopstate_support=yes
6780 if test x"$ld_pushpopstate_support" = xyes; then
6781 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6782 [Define if your linker supports --push-state/--pop-state])
6784 AC_MSG_RESULT($ld_pushpopstate_support)
6786 # Configure the subdirectories
6787 # AC_CONFIG_SUBDIRS($subdirs)
6789 # Create the Makefile
6790 # and configure language subdirectories
6791 AC_CONFIG_FILES($all_outputs)
6793 AC_CONFIG_COMMANDS([default],
6795 case ${CONFIG_HEADERS} in
6796 *auto-host.h:config.in*)
6799 # Make sure all the subdirs exist.
6800 for d in $subdirs doc build common c-family
6802 test -d $d || mkdir $d
6805 [subdirs='$subdirs'])