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="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1041 omp_device_property=omp-device-properties-gcn
1042 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1045 omp_device_property=omp-device-properties-nvptx
1046 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1049 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1050 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1053 if test x"$offload_targets" = x; then
1054 offload_targets=$tgt
1056 offload_targets="$offload_targets,$tgt"
1059 AC_SUBST(omp_device_properties)
1060 AC_SUBST(omp_device_property_deps)
1062 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1063 [Define to offload targets, separated by commas.])
1064 if test x"$enable_offloading" != x; then
1065 AC_DEFINE(ENABLE_OFFLOADING, 1,
1066 [Define this to enable support for offloading.])
1068 AC_DEFINE(ENABLE_OFFLOADING, 0,
1069 [Define this to enable support for offloading.])
1072 if test x"$enable_hsa" = x1 ; then
1073 AC_DEFINE(ENABLE_HSA, 1,
1074 [Define this to enable support for generating HSAIL.])
1077 AC_ARG_WITH(multilib-list,
1078 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1080 with_multilib_list=default)
1082 # -------------------------
1083 # Checks for other programs
1084 # -------------------------
1088 # Find some useful tools
1090 # We need awk to create options.c and options.h.
1091 # Bail out if it's missing.
1093 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1100 AC_SUBST(ranlib_flags)
1104 # See if cmp has --ignore-initial.
1105 gcc_AC_PROG_CMP_IGNORE_INITIAL
1107 # See if we have the mktemp command.
1108 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1110 # See if makeinfo has been installed and is modern enough
1111 # that we can use it.
1112 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1113 [GNU texinfo.* \([0-9][0-9.]*\)],
1114 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1115 if test $gcc_cv_prog_makeinfo_modern = no; then
1117 *** Makeinfo is missing or too old.
1118 *** Info documentation will not be built.])
1123 AC_SUBST(BUILD_INFO)
1125 # Is pod2man recent enough to regenerate manpages?
1126 AC_MSG_CHECKING([for recent Pod::Man])
1127 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1129 GENERATED_MANPAGES=generated-manpages
1134 AC_SUBST(GENERATED_MANPAGES)
1136 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1139 dnl Don't use AC_PROG_LEX; we insist on flex.
1140 dnl LEXLIB is not useful in gcc.
1141 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1144 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1146 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1147 # check for build == host before using them.
1150 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1151 && test -d ../binutils ; then
1152 NM='${objdir}/../binutils/nm-new'
1154 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1158 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1159 && test -d ../binutils ; then
1160 AR='${objdir}/../binutils/ar'
1162 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1165 # The jit documentation looks better if built with sphinx, but can be
1166 # built with texinfo if sphinx is not available.
1167 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1168 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1170 # --------------------
1171 # Checks for C headers
1172 # --------------------
1174 # Need to reject headers which give warnings, so that the -Werror bootstrap
1175 # works later. *sigh* This needs to come before all header checks.
1182 AC_HEADER_TIOCGWINSZ
1183 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1184 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1185 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1186 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1188 # Check for thread headers.
1189 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1190 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1192 # These tests can't be done till we know if we have limits.h.
1196 # ----------------------
1197 # Checks for C++ headers
1198 # ----------------------
1200 dnl Autoconf will give an error in the configure script if there is no
1201 dnl C++ preprocessor. Hack to prevent that.
1202 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1204 m4_popdef([AC_MSG_ERROR])[]dnl
1206 AC_CHECK_HEADERS(unordered_map)
1207 AC_CHECK_HEADERS(tr1/unordered_map)
1208 AC_CHECK_HEADERS(ext/hash_map)
1211 # Dependency checking.
1215 AC_CONFIG_COMMANDS([gccdepdir],[
1216 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1217 for lang in $subdirs c-family common
1219 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1220 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1222 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1229 # These libraries may be used by collect2.
1230 # We may need a special search path to get them linked.
1231 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1233 for libs in '' -lld -lmld \
1234 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1235 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1238 AC_TRY_LINK_FUNC(ldopen,
1239 [gcc_cv_collect2_libs="$libs"; break])
1242 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1243 case $gcc_cv_collect2_libs in
1245 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1247 AC_SUBST(COLLECT2_LIBS)
1249 # When building Ada code on Alpha, we need exc_resume which is usually in
1250 # -lexc. So test for it.
1253 AC_SEARCH_LIBS(exc_resume, exc)
1256 AC_SUBST(GNAT_LIBEXC)
1258 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1261 AC_SEARCH_LIBS(kstat_open, kstat)
1262 EXTRA_GCC_LIBS="$LIBS"
1264 AC_SUBST(EXTRA_GCC_LIBS)
1266 # Some systems put ldexp and frexp in libm instead of libc; assume
1267 # they're both in the same place. jcf-dump needs them.
1270 AC_SEARCH_LIBS(ldexp, m)
1275 # Some systems need dlopen
1278 AC_SEARCH_LIBS(dlopen, dl)
1283 # Use <inttypes.h> only if it exists,
1284 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1286 AC_MSG_CHECKING(for inttypes.h)
1287 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1288 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1289 [[#define __STDC_FORMAT_MACROS
1290 #include <sys/types.h>
1291 #include <inttypes.h>]],
1296 [gcc_cv_header_inttypes_h=yes],
1297 [gcc_cv_header_inttypes_h=no])])
1298 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1299 if test $gcc_cv_header_inttypes_h = yes; then
1300 AC_DEFINE(HAVE_INTTYPES_H, 1,
1301 [Define if you have a working <inttypes.h> header file.])
1304 # Look for the ZSTD package.
1307 AC_SUBST(ZSTD_INCLUDE)
1312 [AS_HELP_STRING([--with-zstd=PATH],
1313 [specify prefix directory for installed zstd library.
1314 Equivalent to --with-zstd-include=PATH/include
1315 plus --with-zstd-lib=PATH/lib])])
1316 AC_ARG_WITH(zstd-include,
1317 [AS_HELP_STRING([--with-zstd-include=PATH],
1318 [specify directory for installed zstd include files])])
1319 AC_ARG_WITH(zstd-lib,
1320 [AS_HELP_STRING([--with-zstd-lib=PATH],
1321 [specify directory for the installed zstd library])])
1322 case "x$with_zstd" in
1328 *) ZSTD_INCLUDE=$with_zstd/include
1329 ZSTD_LIB=$with_zstd/lib
1332 if test "x$with_zstd_include" != x; then
1333 ZSTD_INCLUDE=$with_zstd_include
1335 if test "x$with_zstd_lib" != x; then
1336 ZSTD_LIB=$with_zstd_lib
1338 if test "x$ZSTD_INCLUDE" != x \
1339 && test "x$ZSTD_INCLUDE" != xno; then
1340 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1342 if test "x$ZSTD_LIB" != x \
1343 && test "x$ZSTD_LIB" != xno; then
1344 ZSTD_LDFLAGS=-L$ZSTD_LIB
1347 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1348 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1350 AC_MSG_CHECKING(for zstd.h)
1351 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1352 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1353 [[#include <zstd.h>]])],
1354 [gcc_cv_header_zstd_h=yes],
1355 [gcc_cv_header_zstd_h=no])])
1356 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1357 if test $gcc_cv_header_zstd_h = yes; then
1358 AC_DEFINE(HAVE_ZSTD_H, 1,
1359 [Define if you have a working <zstd.h> header file.])
1362 # LTO can use zstd compression algorithm
1365 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1370 dnl Disabled until we have a complete test for buggy enum bitfields.
1371 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1373 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1374 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1375 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1376 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1377 putchar_unlocked putc_unlocked)
1378 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1379 popen sysconf strsignal getrusage nl_langinfo \
1380 gettimeofday mbstowcs wcswidth mmap setlocale \
1381 gcc_UNLOCKED_FUNCS madvise mallinfo)
1383 if test x$ac_cv_func_mbstowcs = xyes; then
1384 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1385 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1391 [gcc_cv_func_mbstowcs_works=yes],
1392 [gcc_cv_func_mbstowcs_works=no],
1393 [gcc_cv_func_mbstowcs_works=yes])])
1394 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1395 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1396 [Define this macro if mbstowcs does not crash when its
1397 first argument is NULL.])
1401 AC_CHECK_TYPE(ssize_t, int)
1402 AC_CHECK_TYPE(caddr_t, char *)
1404 GCC_AC_FUNC_MMAP_BLACKLIST
1408 # Under VMS, vfork works very differently than on Unix. The standard test
1409 # won't work, and it isn't easily adaptable. It makes more sense to
1411 ac_cv_func_vfork_works=yes
1418 # Until we have in-tree GNU iconv:
1420 if test -f "$LTLIBICONV"; then
1421 LIBICONV_DEP=$LTLIBICONV
1423 AC_SUBST(LIBICONV_DEP)
1429 # We will need to find libiberty.h and ansidecl.h
1430 saved_CFLAGS="$CFLAGS"
1431 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1432 saved_CXXFLAGS="$CXXFLAGS"
1433 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1435 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1436 # normal autoconf function for these. But force definition of
1437 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1438 # basename handling in libiberty.h.
1439 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1440 #undef HAVE_DECL_BASENAME
1441 #define HAVE_DECL_BASENAME 1
1442 #include "ansidecl.h"
1443 #include "system.h"])
1445 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1446 madvise stpcpy strnlen strsignal strverscmp \
1447 strtol strtoul strtoll strtoull setenv unsetenv \
1448 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1449 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1450 #include "ansidecl.h"
1451 #include "system.h"])
1453 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1454 #include "ansidecl.h"
1456 #ifdef HAVE_SYS_RESOURCE_H
1457 #include <sys/resource.h>
1461 gcc_AC_CHECK_DECLS(mallinfo, , ,[
1462 #include "ansidecl.h"
1464 #ifdef HAVE_MALLOC_H
1469 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1470 #include "ansidecl.h"
1472 #ifdef HAVE_SYS_RESOURCE_H
1473 #include <sys/resource.h>
1475 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1476 [Define to `long' if <sys/resource.h> doesn't define.])])
1478 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1479 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1480 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1481 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1482 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1483 #include "ansidecl.h"
1492 gcc_AC_CHECK_DECLS(times, , ,[
1493 #include "ansidecl.h"
1495 #ifdef HAVE_SYS_TIMES_H
1496 #include <sys/times.h>
1500 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1501 #include "ansidecl.h"
1506 # More time-related stuff.
1507 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1508 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1509 #include "ansidecl.h"
1511 #ifdef HAVE_SYS_TIMES_H
1512 #include <sys/times.h>
1514 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1515 if test $ac_cv_struct_tms = yes; then
1516 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1517 [Define if <sys/times.h> defines struct tms.])
1520 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1521 # revisit after autoconf 2.50.
1522 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1523 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1524 #include "ansidecl.h"
1526 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1527 if test $gcc_cv_type_clock_t = yes; then
1528 AC_DEFINE(HAVE_CLOCK_T, 1,
1529 [Define if <time.h> defines clock_t.])
1532 # Check if F_SETLKW is supported by fcntl.
1533 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1534 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1535 #include <fcntl.h>]], [[
1541 return fcntl (1, F_SETLKW, &fl);]])],
1542 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1543 if test $ac_cv_f_setlkw = yes; then
1544 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1545 [Define if F_SETLKW supported by fcntl.])
1548 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1549 CFLAGS="$saved_CFLAGS"
1550 CXXFLAGS="$saved_CXXFLAGS"
1552 # mkdir takes a single argument on some systems.
1553 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1561 # With Setjmp/Longjmp based exception handling.
1562 AC_ARG_ENABLE(sjlj-exceptions,
1563 [AS_HELP_STRING([--enable-sjlj-exceptions],
1564 [arrange to use setjmp/longjmp exception handling])],
1567 if test $enableval != yes; then
1568 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1573 force_sjlj_exceptions=yes],
1576 force_sjlj_exceptions=yes
1580 force_sjlj_exceptions=yes
1584 force_sjlj_exceptions=no
1587 if test $force_sjlj_exceptions = yes; then
1588 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1589 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1590 [Define 0/1 to force the choice for exception handling model.])
1593 # --------------------------------------------------------
1594 # Build, host, and target specific configuration fragments
1595 # --------------------------------------------------------
1597 # Collect build-machine-specific information.
1598 . ${srcdir}/config.build || exit 1
1600 # Collect host-machine-specific information.
1601 . ${srcdir}/config.host || exit 1
1605 # Collect target-machine-specific information.
1606 . ${srcdir}/config.gcc || exit 1
1608 extra_objs="${host_extra_objs} ${extra_objs}"
1609 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1611 # Default the target-machine variables that were not explicitly set.
1612 if test x"$tm_file" = x
1613 then tm_file=$cpu_type/$cpu_type.h; fi
1615 if test x"$extra_headers" = x
1616 then extra_headers=; fi
1618 if test x$md_file = x
1619 then md_file=$cpu_type/$cpu_type.md; fi
1621 if test x$out_file = x
1622 then out_file=$cpu_type/$cpu_type.c; fi
1624 if test x"$tmake_file" = x
1625 then tmake_file=$cpu_type/t-$cpu_type
1628 # Support --enable-initfini-array.
1629 if test x$enable_initfini_array != xno; then
1630 tm_file="${tm_file} initfini-array.h"
1633 if test x"$dwarf2" = xyes
1634 then tm_file="$tm_file tm-dwarf2.h"
1637 # Say what files are being used for the output code and MD file.
1638 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1639 echo "Using \`$srcdir/config/$md_file' as machine description file."
1641 # If any of the xm_file variables contain nonexistent files, warn
1642 # about them and drop them.
1645 for x in $build_xm_file; do
1646 if test -f $srcdir/config/$x
1648 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1654 for x in $host_xm_file; do
1655 if test -f $srcdir/config/$x
1657 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1663 for x in $xm_file; do
1664 if test -f $srcdir/config/$x
1666 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1672 for f in $tm_file; do
1675 if test $count = ax; then
1676 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1678 echo "Using the following target machine macro files:"
1679 for f in $tm_file; do
1680 echo " $srcdir/config/$f"
1684 if test x$use_long_long_for_widest_fast_int = xyes; then
1685 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1686 [Define to 1 if the 'long long' type is wider than 'long' but still
1687 efficiently supported by the host hardware.])
1690 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1691 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1693 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1694 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1697 for f in $host_xm_file; do
1700 if test $count = a; then
1702 elif test $count = ax; then
1703 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1705 echo "Using the following host machine macro files:"
1706 for f in $host_xm_file; do
1707 echo " $srcdir/config/$f"
1710 echo "Using ${out_host_hook_obj} for host machine hooks."
1712 if test "$host_xm_file" != "$build_xm_file"; then
1714 for f in $build_xm_file; do
1717 if test $count = a; then
1719 elif test $count = ax; then
1720 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1722 echo "Using the following build machine macro files:"
1723 for f in $build_xm_file; do
1724 echo " $srcdir/config/$f"
1729 if test -n "$configured_native_system_header_dir"; then
1730 native_system_header_dir=$configured_native_system_header_dir
1732 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1733 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1737 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1738 gcc_cv_mcontext_underscores,
1739 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1740 #include <sys/cdefs.h>
1741 #include <sys/signal.h>
1742 #include <ucontext.h>
1743 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1745 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1746 if test $gcc_cv_mcontext_underscores = yes; then
1747 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1748 [mcontext_t fields start with __])
1757 # Check if a valid thread package
1758 case ${enable_threads} in
1761 target_thread_file='single'
1765 target_thread_file='single'
1767 aix | dce | lynx | mipssde | posix | rtems | \
1768 single | tpf | vxworks | win32)
1769 target_thread_file=${enable_threads}
1772 echo "${enable_threads} is an unknown thread package" 1>&2
1777 if test x${thread_file} = x; then
1778 # No thread file set by target-specific clauses in config.gcc,
1779 # so use file chosen by default logic above
1780 thread_file=${target_thread_file}
1788 if test x$enable___cxa_atexit = xyes || \
1789 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1790 if test x$host = x$target; then
1792 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1793 # keyed to flag_use_cxa_atexit
1801 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1802 [echo "__cxa_atexit can't be enabled on this target"])
1806 # We can't check for __cxa_atexit when building a cross, so assume
1810 if test x$use_cxa_atexit = xyes; then
1811 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1812 [Define if you want to use __cxa_atexit, rather than atexit, to
1813 register C++ destructors for local statics and global objects.
1814 This is essential for fully standards-compliant handling of
1815 destructors, but requires __cxa_atexit in libc.])
1819 # Look for a file containing extra machine modes.
1820 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1821 extra_modes_file='$(srcdir)'/config/${extra_modes}
1822 AC_SUBST(extra_modes_file)
1823 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1824 [Define to the name of a file containing a list of extra machine modes
1825 for this architecture.])
1828 # Convert extra_options into a form suitable for Makefile use.
1831 for f in $extra_options; do
1832 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1833 all_opt_files="$all_opt_files $srcdir/config/$f"
1835 AC_SUBST(extra_opt_files)
1837 # auto-host.h is the file containing items generated by autoconf and is
1838 # the first file included by config.h.
1839 # If host=build, it is correct to have bconfig include auto-host.h
1840 # as well. If host!=build, we are in error and need to do more
1841 # work to find out the build config parameters.
1842 if test x$host = x$build
1844 build_auto=auto-host.h
1845 HAVE_AUTO_BUILD='# '
1847 # We create a subdir, then run autoconf in the subdir.
1848 # To prevent recursion we set host and build for the new
1849 # invocation of configure to the build for this invocation
1856 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1857 *) realsrcdir=../${srcdir};;
1859 # Clearing GMPINC is necessary to prevent host headers being
1860 # used by the build compiler. Defining GENERATOR_FILE stops
1861 # system.h from including gmp.h.
1862 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1863 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1864 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1865 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1866 ${realsrcdir}/configure \
1867 --enable-languages=${enable_languages-all} \
1868 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
1869 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
1870 --target=$target_alias --host=$build_alias \
1871 --build=$build_alias || exit # retaining $tempdir
1873 # We just finished tests for the build machine, so rename
1874 # the file auto-build.h in the gcc directory.
1875 mv auto-host.h ../auto-build.h
1878 build_auto=auto-build.h
1881 AC_SUBST(build_subdir)
1882 AC_SUBST(HAVE_AUTO_BUILD)
1884 tm_file="${tm_file} defaults.h"
1885 tm_p_file="${tm_p_file} tm-preds.h"
1886 tm_d_file="${tm_d_file} defaults.h"
1887 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1888 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1889 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1890 # put this back in temporarily.
1891 xm_file="auto-host.h ansidecl.h ${xm_file}"
1898 # Compile in configure arguments.
1899 if test -f configargs.h ; then
1900 # Being re-configured.
1901 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1902 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1903 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1904 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1907 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1910 # Double all backslashes and backslash all quotes to turn
1911 # gcc_config_arguments into a C string.
1912 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1913 $gcc_config_arguments
1915 gcc_config_arguments_str=`cat conftest.out`
1918 cat > configargs.h <<EOF
1919 /* Generated automatically. */
1920 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1921 static const char thread_model[] = "$thread_file";
1923 static const struct {
1924 const char *name, *value;
1925 } configure_default_options[] = $configure_default_options;
1930 gcc_BASEVER=`cat $srcdir/BASE-VER`
1931 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1932 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1933 if test -f $srcdir/REVISION ; then
1934 gcc_REVISION=`cat $srcdir/REVISION`
1938 cat > plugin-version.h <<EOF
1939 #include "configargs.h"
1941 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1942 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1943 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1944 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1946 static char basever[] = "$gcc_BASEVER";
1947 static char datestamp[] = "$gcc_DATESTAMP";
1948 static char devphase[] = "$gcc_DEVPHASE";
1949 static char revision[] = "$gcc_REVISION";
1951 /* FIXME plugins: We should make the version information more precise.
1952 One way to do is to add a checksum. */
1954 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1956 configuration_arguments};
1960 # Determine what GCC version number to use in filesystem paths.
1963 # Internationalization
1964 ZW_GNU_GETTEXT_SISTER_DIR
1966 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1967 # -liconv on the link line twice.
1968 case "$LIBINTL" in *$LIBICONV*)
1972 AC_ARG_ENABLE(secureplt,
1973 [AS_HELP_STRING([--enable-secureplt],
1974 [enable -msecure-plt by default for PowerPC])],
1977 AC_ARG_ENABLE(mingw-wildcard,
1978 [AS_HELP_STRING([--enable-mingw-wildcard],
1979 [Set whether to expand wildcard on command-line.
1980 Default to platform configuration])],
1981 [],[enable_mingw_wildcard=platform])
1982 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1983 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1984 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1985 [Value to set mingw's _dowildcard to.])])
1987 AC_ARG_ENABLE(large-address-aware,
1988 [AS_HELP_STRING([--enable-large-address-aware],
1989 [Link mingw executables with --large-address-aware])])
1990 AS_IF([test x"$enable_large_address_aware" = xyes],
1991 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1992 [Define if we should link mingw executables with --large-address-aware])])
1994 AC_ARG_ENABLE(leading-mingw64-underscores,
1995 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1996 [enable leading underscores on 64 bit mingw targets]),
1998 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1999 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2000 [Define if we should use leading underscore on 64 bit mingw targets])])
2003 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2006 AC_ARG_ENABLE(frame-pointer,
2007 [AS_HELP_STRING([--enable-frame-pointer],
2008 [enable -fno-omit-frame-pointer by default for x86])], [],
2011 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2012 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2013 enable_frame_pointer=no
2016 enable_frame_pointer=yes
2022 i[[34567]]86-*-* | x86_64-*-*)
2023 if test "x$enable_cld" = xyes; then
2024 tm_defines="${tm_defines} USE_IX86_CLD=1"
2026 if test "x$enable_frame_pointer" = xyes; then
2027 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2032 # Windows32 Registry support for specifying GCC installation paths.
2033 AC_ARG_ENABLE(win32-registry,
2034 [AS_HELP_STRING([--disable-win32-registry],
2035 [disable lookup of installation paths in the
2036 Registry on Windows hosts])
2037 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2038 AS_HELP_STRING([--enable-win32-registry=KEY],
2039 [use KEY instead of GCC version as the last portion
2040 of the registry key])],,)
2043 win32 | pe | cygwin* | mingw32*)
2044 if test "x$enable_win32_registry" != xno; then
2045 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2048 if test "x$enable_win32_registry" != xno; then
2049 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2050 [Define to 1 if installation paths should be looked up in the Windows
2051 Registry. Ignored on non-Windows hosts.])
2053 if test "x$enable_win32_registry" != xyes \
2054 && test "x$enable_win32_registry" != x; then
2055 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2056 [Define to be the last component of the Windows registry key under which
2057 to look for installation paths. The full key used will be
2058 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2059 The default is the GCC version number.])
2065 # Get an absolute path to the GCC top-level source directory
2066 holddir=`${PWDCMD-pwd}`
2068 topdir=`${PWDCMD-pwd}`
2071 # Conditionalize the makefile for this host machine.
2073 for f in ${host_xmake_file}
2075 if test -f ${srcdir}/config/$f
2077 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2081 # Conditionalize the makefile for this target machine.
2083 for f in ${tmake_file}
2085 if test -f ${srcdir}/config/$f
2087 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2090 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2092 out_object_file=`basename $out_file .c`.o
2093 common_out_object_file=`basename $common_out_file .c`.o
2095 tm_file_list="options.h"
2096 tm_include_list="options.h insn-constants.h"
2097 for f in $tm_file; do
2100 f=`echo $f | sed 's/^..//'`
2101 tm_file_list="${tm_file_list} $f"
2102 tm_include_list="${tm_include_list} $f"
2105 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2106 tm_include_list="${tm_include_list} $f"
2109 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2110 tm_include_list="${tm_include_list} config/$f"
2117 for f in $tm_p_file; do
2120 tm_p_file_list="${tm_p_file_list} $f"
2121 tm_p_include_list="${tm_p_include_list} $f"
2124 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2125 tm_p_include_list="${tm_p_include_list} config/$f"
2130 tm_d_include_list="options.h insn-constants.h"
2131 for f in $tm_d_file; do
2134 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2135 tm_d_include_list="${tm_d_include_list} $f"
2138 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2139 tm_d_include_list="${tm_d_include_list} config/$f"
2146 for f in $xm_file; do
2149 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2150 xm_include_list="${xm_include_list} $f"
2153 xm_file_list="${xm_file_list} $f"
2154 xm_include_list="${xm_include_list} $f"
2157 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2158 xm_include_list="${xm_include_list} config/$f"
2164 host_xm_include_list=
2165 for f in $host_xm_file; do
2168 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2169 host_xm_include_list="${host_xm_include_list} $f"
2172 host_xm_file_list="${host_xm_file_list} $f"
2173 host_xm_include_list="${host_xm_include_list} $f"
2176 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2177 host_xm_include_list="${host_xm_include_list} config/$f"
2183 for f in $build_xm_file; do
2186 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2187 build_xm_include_list="${build_xm_include_list} $f"
2189 auto-build.h | auto-host.h )
2190 build_xm_file_list="${build_xm_file_list} $f"
2191 build_xm_include_list="${build_xm_include_list} $f"
2194 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2195 build_xm_include_list="${build_xm_include_list} config/$f"
2200 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2201 # cross-compiler which does not use the native headers and libraries.
2202 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2203 CROSS= AC_SUBST(CROSS)
2204 ALL=all.internal AC_SUBST(ALL)
2205 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2206 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2208 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2209 test x$build != x$host || test "x$with_build_sysroot" != x; then
2210 if test "x$with_build_sysroot" != x; then
2211 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2213 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2216 if test x$host != x$target
2218 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2220 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2221 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2222 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2225 if test "x$with_build_sysroot" != "x"; then
2226 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2227 elif test "x$with_sysroot" = x; then
2228 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2229 elif test "x$with_sysroot" = xyes; then
2230 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2232 target_header_dir="${with_sysroot}${native_system_header_dir}"
2235 target_header_dir=${native_system_header_dir}
2238 # If this is a cross-compiler that does not
2239 # have its own set of headers then define
2242 # If this is using newlib, without having the headers available now,
2243 # then define inhibit_libc in LIBGCC2_CFLAGS.
2244 # This prevents libgcc2 from containing any code which requires libc
2246 : ${inhibit_libc=false}
2247 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2248 test x$with_newlib = xyes ; } &&
2249 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2252 AC_SUBST(inhibit_libc)
2254 # When building gcc with a cross-compiler, we need to adjust things so
2255 # that the generator programs are still built with the native compiler.
2256 # Also, we cannot run fixincludes.
2258 # These are the normal (build=host) settings:
2259 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2260 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2261 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2262 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2263 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2264 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2266 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2267 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2269 # And these apply if build != host, or we are generating coverage data
2270 if test x$build != x$host || test "x$coverage_flags" != x
2272 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2273 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2274 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2276 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2277 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2278 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2279 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2281 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2282 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2284 # Expand extra_headers to include complete path.
2285 # This substitutes for lots of t-* files.
2287 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2288 for file in ${extra_headers} ; do
2289 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2292 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2293 if test x"$use_gcc_tgmath" = xyes
2294 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2297 # Define collect2 in Makefile.
2298 case $host_can_use_collect2 in
2300 *) collect2='collect2$(exeext)' ;;
2302 AC_SUBST([collect2])
2304 # Add a definition of USE_COLLECT2 if system wants one.
2305 case $use_collect2 in
2306 no) use_collect2= ;;
2309 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2310 xm_defines="${xm_defines} USE_COLLECT2"
2311 case $host_can_use_collect2 in
2313 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2319 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2320 [Define to the name of the LTO plugin DSO that must be
2321 passed to the linker's -plugin=LIB option.])
2323 # ---------------------------
2324 # Assembler & linker features
2325 # ---------------------------
2327 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2328 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2329 # However when ld-new is first executed from the build tree, libtool will
2330 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2331 # to the build tree. While doing this we need to use the previous-stage
2332 # linker, or we have an infinite loop. The presence of a shell script as
2333 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2334 # the gcc/collect-ld script. So we need to know how libtool works, or
2335 # exec-tool will fail.
2337 m4_defun([_LT_CONFIG_COMMANDS], [])
2340 AC_SUBST(enable_fast_install)
2342 # Identify the assembler which will work hand-in-glove with the newly
2343 # built GCC, so that we can examine its features. This is the assembler
2344 # which will be driven by the driver program.
2346 # If build != host, and we aren't building gas in-tree, we identify a
2347 # build->target assembler and hope that it will have the same features
2348 # as the host->target assembler we'll be using.
2349 gcc_cv_gas_major_version=
2350 gcc_cv_gas_minor_version=
2351 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2353 m4_pattern_allow([AS_FOR_TARGET])dnl
2354 AS_VAR_SET_IF(gcc_cv_as,, [
2355 if test -x "$DEFAULT_ASSEMBLER"; then
2356 gcc_cv_as="$DEFAULT_ASSEMBLER"
2357 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2358 && test -f ../gas/Makefile \
2359 && test x$build = x$host; then
2360 gcc_cv_as=../gas/as-new$build_exeext
2361 elif test -x as$build_exeext; then
2362 # Build using assembler in the current directory.
2363 gcc_cv_as=./as$build_exeext
2364 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2365 gcc_cv_as="$AS_FOR_TARGET"
2367 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2370 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2371 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2372 case "$ORIGINAL_AS_FOR_TARGET" in
2373 ./as | ./as$build_exeext) ;;
2374 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2377 AC_MSG_CHECKING(what assembler to use)
2378 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2379 # Single tree build which includes gas. We want to prefer it
2380 # over whatever linker top-level may have detected, since
2381 # we'll use what we're building after installation anyway.
2382 AC_MSG_RESULT(newly built gas)
2384 _gcc_COMPUTE_GAS_VERSION
2385 in_tree_gas_is_elf=no
2386 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2387 || (grep 'obj_format = multi' ../gas/Makefile \
2388 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2390 in_tree_gas_is_elf=yes
2393 AC_MSG_RESULT($gcc_cv_as)
2399 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2400 [case "${enableval}" in
2406 install_gold_as_default=no
2408 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2409 [case "${enableval}" in
2411 install_gold_as_default=yes
2414 if test x${default_ld} != x; then
2415 install_gold_as_default=yes
2421 AC_MSG_ERROR([invalid --enable-gold argument])
2425 # Identify the linker which will work hand-in-glove with the newly
2426 # built GCC, so that we can examine its features. This is the linker
2427 # which will be driven by the driver program.
2429 # If build != host, and we aren't building gas in-tree, we identify a
2430 # build->target linker and hope that it will have the same features
2431 # as the host->target linker we'll be using.
2432 gcc_cv_gld_major_version=
2433 gcc_cv_gld_minor_version=
2434 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2435 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2436 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2438 AS_VAR_SET_IF(gcc_cv_ld,, [
2439 if test -x "$DEFAULT_LINKER"; then
2440 gcc_cv_ld="$DEFAULT_LINKER"
2441 elif test $install_gold_as_default = yes \
2442 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2443 && test -f ../gold/Makefile \
2444 && test x$build = x$host; then
2445 gcc_cv_ld=../gold/ld-new$build_exeext
2446 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2447 && test -f ../ld/Makefile \
2448 && test x$build = x$host; then
2449 gcc_cv_ld=../ld/ld-new$build_exeext
2450 elif test -x collect-ld$build_exeext; then
2451 # Build using linker in the current directory.
2452 gcc_cv_ld=./collect-ld$build_exeext
2453 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2454 gcc_cv_ld="$LD_FOR_TARGET"
2456 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2459 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2460 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2461 # if the PLUGIN_LD is set ld-new, just have it as ld
2462 # as that is the installed named.
2463 if test x$PLUGIN_LD_SUFFIX = xld-new \
2464 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2467 AC_ARG_WITH(plugin-ld,
2468 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2469 [if test x"$withval" != x; then
2470 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2471 PLUGIN_LD_SUFFIX="$withval"
2473 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2474 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2476 # Check to see if we are using gold instead of ld
2477 AC_MSG_CHECKING(whether we are using gold)
2479 if test x$gcc_cv_ld != x; then
2480 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2481 | grep "GNU gold" > /dev/null; then
2485 AC_MSG_RESULT($ld_is_gold)
2487 AC_MSG_CHECKING(gold linker with split stack support as non default)
2488 # Check to see if default ld is not gold, but gold is
2489 # available and has support for split stack. If gcc was configured
2490 # with gold then no checking is done.
2492 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2494 # For platforms other than powerpc64*, enable as appropriate.
2497 ld_gold=`which ${gcc_cv_ld}.gold`
2498 # Make sure this gold has minimal split stack support
2499 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2500 ld_vers=`$ld_gold --version | sed 1q`
2501 gold_vers=`echo $ld_vers | sed -n \
2502 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2504 # check that the gold version contains the complete split stack support
2505 # on powerpc64 big and little endian
2507 case "$gold_vers" in
2508 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2510 *) gold_non_default=no
2516 if test $gold_non_default = yes; then
2517 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2518 [Define if the gold linker supports split stack and is available as a non-default])
2521 AC_MSG_RESULT($gold_non_default)
2523 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2524 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2525 case "$ORIGINAL_LD_FOR_TARGET" in
2526 ./collect-ld | ./collect-ld$build_exeext) ;;
2527 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2530 AC_MSG_CHECKING(what linker to use)
2531 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2532 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2533 # Single tree build which includes ld. We want to prefer it
2534 # over whatever linker top-level may have detected, since
2535 # we'll use what we're building after installation anyway.
2536 AC_MSG_RESULT(newly built ld)
2538 in_tree_ld_is_elf=no
2539 if (grep 'EMUL = .*elf' ../ld/Makefile \
2540 || grep 'EMUL = .*linux' ../ld/Makefile \
2541 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2542 in_tree_ld_is_elf=yes
2543 elif test "$ld_is_gold" = yes; then
2544 in_tree_ld_is_elf=yes
2546 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
2549 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2550 if test x$gcc_cv_gld_version != x; then
2554 case $gcc_cv_gld_version in
2557 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2560 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2561 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2563 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2564 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2566 AC_MSG_RESULT($gcc_cv_ld)
2568 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2569 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2570 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2573 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2574 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2576 # Figure out what nm we will be using.
2577 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2578 AS_VAR_SET_IF(gcc_cv_nm,, [
2579 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2580 && test -f ../binutils/Makefile \
2581 && test x$build = x$host; then
2582 gcc_cv_nm=../binutils/nm-new$build_exeext
2583 elif test -x nm$build_exeext; then
2584 gcc_cv_nm=./nm$build_exeext
2585 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2586 gcc_cv_nm="$NM_FOR_TARGET"
2588 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2591 AC_MSG_CHECKING(what nm to use)
2592 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2593 # Single tree build which includes binutils.
2594 AC_MSG_RESULT(newly built nm)
2597 AC_MSG_RESULT($gcc_cv_nm)
2601 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2602 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2603 case "$ORIGINAL_NM_FOR_TARGET" in
2604 ./nm | ./nm$build_exeext) ;;
2605 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2609 # Figure out what objdump we will be using.
2610 AS_VAR_SET_IF(gcc_cv_objdump,, [
2611 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2612 && test -f ../binutils/Makefile \
2613 && test x$build = x$host; then
2614 # Single tree build which includes binutils.
2615 gcc_cv_objdump=../binutils/objdump$build_exeext
2616 elif test -x objdump$build_exeext; then
2617 gcc_cv_objdump=./objdump$build_exeext
2618 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2619 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2621 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2624 AC_MSG_CHECKING(what objdump to use)
2625 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2626 # Single tree build which includes binutils.
2627 AC_MSG_RESULT(newly built objdump)
2628 elif test x$gcc_cv_objdump = x; then
2629 AC_MSG_RESULT(not found)
2631 AC_MSG_RESULT($gcc_cv_objdump)
2634 # Figure out what readelf we will be using.
2635 AS_VAR_SET_IF(gcc_cv_readelf,, [
2636 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2637 && test -f ../binutils/Makefile \
2638 && test x$build = x$host; then
2639 # Single tree build which includes binutils.
2640 gcc_cv_readelf=../binutils/readelf$build_exeext
2641 elif test -x readelf$build_exeext; then
2642 gcc_cv_readelf=./readelf$build_exeext
2643 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2644 gcc_cv_readelf="$READELF_FOR_TARGET"
2646 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2649 AC_MSG_CHECKING(what readelf to use)
2650 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2651 # Single tree build which includes binutils.
2652 AC_MSG_RESULT(newly built readelf)
2653 elif test x$gcc_cv_readelf = x; then
2654 AC_MSG_RESULT(not found)
2656 AC_MSG_RESULT($gcc_cv_readelf)
2659 # Figure out what otool we will be using.
2660 AS_VAR_SET_IF(gcc_cv_otool,, [
2661 if test -x otool$build_exeext; then
2662 gcc_cv_otool=./otool$build_exeext
2663 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2664 gcc_cv_otool="$OTOOL_FOR_TARGET"
2666 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2669 AC_MSG_CHECKING(what otool to use)
2670 if test x$gcc_cv_otool = x; then
2671 AC_MSG_RESULT(not found)
2673 AC_MSG_RESULT($gcc_cv_otool)
2676 # Figure out what assembler alignment features are present.
2677 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2681 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2682 [Define if your assembler supports .balign and .p2align.])])
2684 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2687 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2688 [Define if your assembler supports specifying the maximum number
2689 of bytes to skip when using the GAS .p2align command.])])
2691 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2694 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2695 [Define if your assembler supports .literal16.])])
2697 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2699 [conftest_label1: .word 0
2701 conftest_label2: .word 0
2703 [if test x$gcc_cv_nm != x; then
2704 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2705 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2706 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2708 else gcc_cv_as_subsection_m1=yes
2710 rm -f conftest.nm1 conftest.nm2
2712 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2713 [Define if your assembler supports .subsection and .subsection -1 starts
2714 emitting at the beginning of your section.])])
2716 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2719 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2721 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2723 [ .weakref foobar, barfnot],,
2724 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2726 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2729 .NSUBSPA $CODE$,COMDAT],,
2730 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2732 # .hidden needs to be supported in both the assembler and the linker,
2733 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2734 # This is irritatingly difficult to feature test for; we have to check the
2735 # date string after the version number. If we've got an in-tree
2736 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2738 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2741 conftest_s=' .globl foobar,hidden'
2744 conftest_s=' .hidden foobar
2748 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2749 [elf,2,13,0],, [$conftest_s])
2752 # Darwin as has some visibility support, though with a different syntax.
2753 gcc_cv_as_hidden=yes
2757 # gnu_indirect_function type is an extension proposed at
2758 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2759 # selection of function implementation
2760 AC_ARG_ENABLE(gnu-indirect-function,
2761 [AS_HELP_STRING([--enable-gnu-indirect-function],
2762 [enable the use of the @gnu_indirect_function to glibc systems])],
2763 [case $enable_gnu_indirect_function in
2765 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2766 Valid choices are 'yes' and 'no'.]) ;;
2768 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2770 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2771 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2772 [Define if your system supports gnu indirect functions.])
2776 if test $in_tree_ld != yes ; then
2777 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2778 if echo "$ld_ver" | grep GNU > /dev/null; then
2779 if test x"$ld_is_gold" = xyes; then
2780 # GNU gold --version looks like this:
2782 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2784 # We extract the binutils version which is more familiar and specific
2785 # than the gold version.
2786 ld_vers=`echo $ld_ver | sed -n \
2787 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2789 # GNU ld --version looks like this:
2791 # GNU ld (GNU Binutils) 2.21.51.20110225
2792 ld_vers=`echo $ld_ver | sed -n \
2793 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2795 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2796 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2797 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2798 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2802 # Solaris 2 ld -V output looks like this for a regular version:
2804 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2806 # but test versions add stuff at the end:
2808 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2810 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2811 # numbers can be used in ld.so.1 feature checks even if a different
2812 # linker is configured.
2813 ld_ver=`$gcc_cv_ld -V 2>&1`
2814 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2815 ld_vers=`echo $ld_ver | sed -n \
2816 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2817 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2818 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2826 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2827 [[if test $in_tree_ld = yes ; then
2829 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2830 && test $in_tree_ld_is_elf = yes; then
2831 gcc_cv_ld_hidden=yes
2834 gcc_cv_ld_hidden=yes
2835 if test x"$ld_is_gold" = xyes; then
2837 elif echo "$ld_ver" | grep GNU > /dev/null; then
2839 mmix-knuth-mmixware)
2840 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2844 if test 0"$ld_date" -lt 20020404; then
2845 if test -n "$ld_date"; then
2846 # If there was date string, but was earlier than 2002-04-04, fail
2848 elif test -z "$ld_vers"; then
2849 # If there was no date string nor ld version number, something is wrong
2852 test -z "$ld_vers_patch" && ld_vers_patch=0
2853 if test "$ld_vers_major" -lt 2; then
2855 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2856 gcc_cv_ld_hidden="no"
2857 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2865 gcc_cv_ld_hidden=yes
2868 # Darwin ld has some visibility support.
2869 gcc_cv_ld_hidden=yes
2871 hppa64*-*-hpux* | ia64*-*-hpux*)
2872 gcc_cv_ld_hidden=yes
2875 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2876 # .symbolic was only added in Solaris 9 12/02.
2877 gcc_cv_ld_hidden=yes
2885 libgcc_visibility=no
2886 AC_SUBST(libgcc_visibility)
2887 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2888 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2889 libgcc_visibility=yes
2890 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2891 [Define if your assembler and linker support .hidden.])
2894 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2895 gcc_cv_ld_ro_rw_mix=unknown
2896 if test $in_tree_ld = yes ; then
2897 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2898 && test $in_tree_ld_is_elf = yes; then
2899 gcc_cv_ld_ro_rw_mix=read-write
2901 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2902 echo '.section myfoosect, "a"' > conftest1.s
2903 echo '.section myfoosect, "aw"' > conftest2.s
2904 echo '.byte 1' >> conftest2.s
2905 echo '.section myfoosect, "a"' > conftest3.s
2906 echo '.byte 0' >> conftest3.s
2907 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2908 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2909 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2910 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2911 conftest2.o conftest3.o > /dev/null 2>&1; then
2912 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2913 | sed -e '/myfoosect/!d' -e N`
2914 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2915 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2916 gcc_cv_ld_ro_rw_mix=read-only
2918 gcc_cv_ld_ro_rw_mix=read-write
2923 rm -f conftest.* conftest[123].*
2926 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2927 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2928 [Define if your linker links a mix of read-only
2929 and read-write sections into a read-write section.])
2931 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2933 gcc_AC_INITFINI_ARRAY
2935 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2936 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2944 [[# GAS versions before 2.11 do not support uleb128,
2945 # despite appearing to.
2946 # ??? There exists an elf-specific test that will crash
2947 # the assembler. Perhaps it's better to figure out whether
2948 # arbitrary sections are supported and try the test.
2949 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2950 if echo "$as_ver" | grep GNU > /dev/null; then
2951 as_vers=`echo $as_ver | sed -n \
2952 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2953 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2954 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2955 if test $as_major -eq 2 && test $as_minor -lt 11
2957 else gcc_cv_as_leb128=yes
2960 [AC_DEFINE(HAVE_AS_LEB128, 1,
2961 [Define if your assembler supports .sleb128 and .uleb128.])],
2962 [AC_DEFINE(HAVE_AS_LEB128, 0,
2963 [Define if your assembler supports .sleb128 and .uleb128.])])
2965 # Determine if an .eh_frame section is read-only.
2966 gcc_fn_eh_frame_ro () {
2967 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2968 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2969 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2972 # Check if we have assembler support for unwind directives.
2973 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2980 .cfi_escape 1, 2, 3, 4, 5
2984 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2985 # read-only and read-write sections, we need to make sure that the
2986 # assembler used emits read-write .eh_frame sections.
2987 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2988 gcc_cv_as_cfi_directive=yes
2989 elif test "x$gcc_cv_objdump" = x; then
2990 # No objdump, err on the side of caution.
2991 gcc_cv_as_cfi_directive=no
2993 if test x$gas = xyes; then
3001 sparc*-*-solaris2.*)
3002 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3003 if gcc_fn_eh_frame_ro $as_32_opt \
3004 || gcc_fn_eh_frame_ro $as_64_opt; then
3005 gcc_cv_as_cfi_directive=no
3007 gcc_cv_as_cfi_directive=yes
3010 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3011 # On Solaris/x86, make sure that GCC and assembler agree on using
3012 # read-only .eh_frame sections for 64-bit.
3013 if gcc_fn_eh_frame_ro $as_32_opt; then
3014 gcc_cv_as_cfi_directive=no
3015 elif gcc_fn_eh_frame_ro $as_64_opt; then
3016 gcc_cv_as_cfi_directive=yes
3018 gcc_cv_as_cfi_directive=no
3025 gcc_cv_as_cfi_directive=yes
3028 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3029 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3033 .cfi_adjust_cfa_offset 64
3035 .cfi_adjust_cfa_offset 128
3038 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3039 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3040 gcc_cv_as_cfi_advance_working=yes
3044 # no objdump, err on the side of caution
3045 gcc_cv_as_cfi_advance_working=no
3047 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3048 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3049 [`if test $gcc_cv_as_cfi_directive = yes \
3050 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3051 [Define 0/1 if your assembler supports CFI directives.])
3053 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3054 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3055 gcc_cv_as_cfi_personality_directive, ,,
3058 .cfi_personality 0, symbol
3060 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3061 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3062 [Define 0/1 if your assembler supports .cfi_personality.])
3064 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3065 gcc_cv_as_cfi_sections_directive, ,,
3067 .cfi_sections .debug_frame, .eh_frame
3071 win32 | pe | cygwin* | mingw32*)
3072 # Need to check that we generated the correct relocation for the
3073 # .debug_frame section. This was fixed for binutils 2.21.
3074 gcc_cv_as_cfi_sections_directive=no
3075 if test "x$gcc_cv_objdump" != x; then
3076 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3077 grep secrel > /dev/null; then
3078 gcc_cv_as_cfi_sections_directive=yes
3083 gcc_cv_as_cfi_sections_directive=yes
3086 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3087 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3088 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3089 [Define 0/1 if your assembler supports .cfi_sections.])
3091 # GAS versions up to and including 2.11.0 may mis-optimize
3093 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3101 .section .eh_frame,"aw",@progbits
3103 .4byte .LECIE1-.LSCIE1
3117 .4byte .LEFDE1-.LASFDE1
3119 .4byte .LASFDE1-__FRAME_BEGIN__
3127 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3128 cat > conftest.lit <<EOF
3129 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3130 0010 01000000 12000000 18000000 00000000 ................
3131 0020 08000000 04080000 0044 .........D @&t@
3133 cat > conftest.big <<EOF
3134 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3135 0010 00000001 00000012 00000018 00000000 ................
3136 0020 00000008 04000000 0844 .........D @&t@
3138 # If the assembler didn't choke, and we can objdump,
3139 # and we got the correct data, then succeed.
3140 # The text in the here-document typically retains its unix-style line
3141 # endings, while the output of objdump will use host line endings.
3142 # Therefore, use diff -b for the comparisons.
3143 if test x$gcc_cv_objdump != x \
3144 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3145 | tail -3 > conftest.got \
3146 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3147 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3149 gcc_cv_as_eh_frame=yes
3150 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3151 gcc_cv_as_eh_frame=buggy
3153 # Uh oh, what do we do now?
3154 gcc_cv_as_eh_frame=no
3157 if test $gcc_cv_as_eh_frame = buggy; then
3158 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3159 [Define if your assembler mis-optimizes .eh_frame data.])
3162 # Test if the assembler supports the section flag 'e' or #exclude for
3163 # specifying an excluded section.
3164 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3165 [2,22,51], [--fatal-warnings],
3168 if test $gcc_cv_as_section_exclude_e = no; then
3170 # Solaris as uses #exclude instead.
3174 conftest_s='.section "foo1", #exclude'
3176 i?86-*-solaris2* | x86_64-*-solaris2*)
3177 conftest_s='.section foo1, #exclude'
3182 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3186 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3187 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3188 [Define if your assembler supports specifying the exclude section flag.])
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])
3193 if test $gcc_cv_as_shf_merge = no; then
3194 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3195 [elf,2,12,0], [--fatal-warnings],
3196 [.section .rodata.str, "aMS", %progbits, 1])
3198 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3199 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3200 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3202 gcc_cv_ld_aligned_shf_merge=yes
3204 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3206 sparc*-*-solaris2.11*)
3207 if test x"$gnu_ld" = xno \
3208 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3209 gcc_cv_ld_aligned_shf_merge=no
3213 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3214 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3215 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3217 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3218 [.stabs "gcc2_compiled.",60,0,0,0],,
3219 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3220 [Define if your assembler supports .stabs.])])
3222 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3223 gcc_cv_as_comdat_group,
3224 [elf,2,16,0], [--fatal-warnings],
3225 [.section .text,"axG",@progbits,.foo,comdat])
3226 if test $gcc_cv_as_comdat_group = yes; then
3227 gcc_cv_as_comdat_group_percent=no
3228 gcc_cv_as_comdat_group_group=no
3230 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3231 gcc_cv_as_comdat_group_percent,
3232 [elf,2,16,0], [--fatal-warnings],
3233 [.section .text,"axG",%progbits,.foo,comdat])
3234 if test $gcc_cv_as_comdat_group_percent = yes; then
3235 gcc_cv_as_comdat_group_group=no
3238 # Sun as uses a completely different syntax.
3243 .group foo,".text%foo",#comdat
3244 .section ".text%foo", #alloc,#execinstr,#progbits
3249 i?86-*-solaris2* | x86_64-*-solaris2*)
3251 .group foo,.text%foo,#comdat
3252 .section .text%foo, "ax", @progbits
3258 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3259 gcc_cv_as_comdat_group_group,
3263 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3264 gcc_cv_as_comdat_group_group=no
3268 if test x"$ld_is_gold" = xyes; then
3270 elif test $in_tree_ld = yes ; then
3272 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3273 && test $in_tree_ld_is_elf = yes; then
3276 elif echo "$ld_ver" | grep GNU > /dev/null; then
3278 if test 0"$ld_date" -lt 20050308; then
3279 if test -n "$ld_date"; then
3280 # If there was date string, but was earlier than 2005-03-08, fail
3282 elif test "$ld_vers_major" -lt 2; then
3284 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3291 *-*-solaris2.1[1-9]*)
3293 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3294 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3297 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3298 # least ld version 1.2267.
3299 if test "$ld_vers_major" -gt 1; then
3301 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3303 elif test "$ld_vers_minor" -ge 2267; then
3308 # Assume linkers other than GNU ld don't support COMDAT group.
3314 # Allow overriding the automatic COMDAT group tests above.
3315 AC_ARG_ENABLE(comdat,
3316 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3317 [comdat_group="$enable_comdat"])
3318 if test $comdat_group = no; then
3319 gcc_cv_as_comdat_group=no
3320 gcc_cv_as_comdat_group_percent=no
3321 gcc_cv_as_comdat_group_group=no
3323 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3324 [`if test $gcc_cv_as_comdat_group = yes \
3325 || test $gcc_cv_as_comdat_group_percent = yes \
3326 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3327 [Define 0/1 if your assembler and linker support COMDAT groups.])
3329 # Restrict this test to Solaris/x86: other targets define this statically.
3331 i?86-*-solaris2* | x86_64-*-solaris2*)
3332 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3333 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3337 # Full support for hidden thunks in linkonce sections only appeared in
3338 # Solaris 11/OpenSolaris.
3339 *-*-solaris2.1[[1-9]]*)
3347 AC_MSG_RESULT($hidden_linkonce)
3348 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3349 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3350 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3354 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3359 .loc 1 1 0 is_stmt 1],,
3360 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3361 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3363 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3364 gcc_cv_as_discriminator,
3368 .loc 1 1 0 discriminator 1],,
3369 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3370 [Define if your assembler supports the .loc discriminator sub-directive.])])
3372 # Catch the newlib flag of the same name so we can gate GCC features on it.
3373 AC_ARG_ENABLE(newlib-nano-formatted-io,
3374 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3376 [case "${enableval}" in
3380 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3384 # Thread-local storage - the check is heavily parameterized.
3393 .section ".tdata","awT",@progbits
3396 ldq $27,__tls_get_addr($29) !literal!1
3397 lda $16,foo($29) !tlsgd!1
3398 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3399 ldq $27,__tls_get_addr($29) !literal!2
3400 lda $16,foo($29) !tlsldm!2
3401 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3402 ldq $1,foo($29) !gotdtprel
3403 ldah $2,foo($29) !dtprelhi
3404 lda $3,foo($2) !dtprello
3405 lda $4,foo($29) !dtprel
3406 ldq $1,foo($29) !gottprel
3407 ldah $2,foo($29) !tprelhi
3408 lda $3,foo($2) !tprello
3409 lda $4,foo($29) !tprel'
3412 tls_as_opt=--fatal-warnings
3416 add_s r0,r0, @foo@tpoff'
3420 cris-*-*|crisv32-*-*)
3422 .section ".tdata","awT",@progbits
3429 tls_as_opt=--fatal-warnings
3433 .section ".tdata","awT",@progbits
3445 .section ".tdata","awT",@progbits
3449 addil LT%foo-$tls_gdidx$,gp
3450 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3453 addil LT%foo-$tls_ldidx$,gp
3455 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3456 addil LR%foo-$tls_dtpoff$,%ret0
3457 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3459 addil LT%foo-$tls_ieoff$,gp
3460 ldw RT%foo-$tls_ieoff$(%r1),%t2
3463 addil LR%foo-$tls_leoff$,%t1
3464 ldo RR%foo-$tls_leoff$(%r1),%t2'
3467 tls_as_opt=--fatal-warnings
3471 .section ".tdata","awT",%progbits
3482 i[34567]86-*-* | x86_64-*-*)
3484 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3491 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3493 .section .tdata,"awt",@progbits'
3498 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3499 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3503 .section ".tdata","awT",@progbits'
3507 tls_as_opt="--fatal-warnings"
3511 conftest_s="$conftest_s
3515 leal foo@tlsgd(,%ebx,1), %eax
3516 leal foo@tlsldm(%ebx), %eax
3517 leal foo@dtpoff(%eax), %edx
3518 movl foo@gottpoff(%ebx), %eax
3519 subl foo@gottpoff(%ebx), %eax
3520 addl foo@gotntpoff(%ebx), %eax
3521 movl foo@indntpoff, %eax
3522 movl \$foo@tpoff, %eax
3523 subl \$foo@tpoff, %eax
3524 leal foo@ntpoff(%ecx), %eax"
3527 if test x$on_solaris = xyes; then
3529 yes) tls_as_opt="$tls_as_opt --64" ;;
3530 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3533 conftest_s="$conftest_s
3537 leaq foo@tlsgd(%rip), %rdi
3538 leaq foo@tlsld(%rip), %rdi
3539 leaq foo@dtpoff(%rax), %rdx
3540 movq foo@gottpoff(%rip), %rax
3541 movq \$foo@tpoff, %rax"
3547 .section ".tdata","awT",@progbits
3550 addl r16 = @ltoff(@dtpmod(foo#)), gp
3551 addl r17 = @ltoff(@dtprel(foo#)), gp
3552 addl r18 = @ltoff(@tprel(foo#)), gp
3553 addl r19 = @dtprel(foo#), gp
3554 adds r21 = @dtprel(foo#), r13
3555 movl r23 = @dtprel(foo#)
3556 addl r20 = @tprel(foo#), gp
3557 adds r22 = @tprel(foo#), r13
3558 movl r24 = @tprel(foo#)'
3561 tls_as_opt=--fatal-warnings
3565 .section .tdata,"awT",@progbits
3569 addik r5,r20,x@TLSGD
3570 addik r5,r20,x@TLSLDM'
3573 tls_as_opt='--fatal-warnings'
3577 .section .tdata,"awT",@progbits
3581 addiu $4, $28, %tlsgd(x)
3582 addiu $4, $28, %tlsldm(x)
3583 lui $4, %dtprel_hi(x)
3584 addiu $4, $4, %dtprel_lo(x)
3585 lw $4, %gottprel(x)($28)
3586 lui $4, %tprel_hi(x)
3587 addiu $4, $4, %tprel_lo(x)'
3590 tls_as_opt='-32 --fatal-warnings'
3594 .section .tdata,"awT",@progbits
3599 move.l x@TLSGD(%a5),%a0
3600 move.l x@TLSLDM(%a5),%a0
3601 move.l x@TLSLDO(%a5),%a0
3602 move.l x@TLSIE(%a5),%a0
3603 move.l x@TLSLE(%a5),%a0'
3606 tls_as_opt='--fatal-warnings'
3610 .section ".tdata","awT",@progbits'
3613 tls_as_opt="--fatal-warnings"
3617 .section ".tdata","awT",%progbits
3621 add x0, x0, #:tlsgd_lo12:x
3626 tls_as_opt='--fatal-warnings'
3630 .section ".tdata","awT",@progbits
3633 l.movhi r3, tpoffha(foo)
3635 l.lwz r4, tpofflo(foo)(r3)'
3638 tls_as_opt=--fatal-warnings
3642 .extern __get_tpointer
3660 .section ".tdata","awT",@progbits
3668 addi 3,2,ld0@got@tlsgd
3674 addi 3,2,x1@got@tlsld
3680 addis 9,3,x2@dtprel@ha
3681 addi 9,9,x2@dtprel@l
3684 ld 9,x3@got@dtprel(2)
3690 tls_as_opt="-a64 --fatal-warnings"
3694 .section ".tdata","awT",@progbits
3702 addi 3,31,ld0@got@tlsgd
3704 addi 3,31,x1@got@tlsld
3707 addis 9,3,x2@dtprel@ha
3708 addi 9,9,x2@dtprel@l
3709 lwz 9,x3@got@tprel(31)
3712 addis 9,2,x2@tprel@ha
3713 addi 9,9,x2@tprel@l'
3716 tls_as_opt="-a32 --fatal-warnings"
3720 .section .tdata,"awT",@progbits
3724 call __tls_get_addr'
3727 tls_as_opt='--fatal-warnings'
3731 .section ".tdata","awT",@progbits
3740 l %r1,foo@GOTNTPOFF(%r12)
3741 l %r1,0(%r1):tls_load:foo
3742 bas %r14,0(%r1,%r13):tls_gdcall:foo
3743 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3746 tls_as_opt="-m31 --fatal-warnings"
3750 .section ".tdata","awT",@progbits
3758 lg %r1,foo@GOTNTPOFF(%r12)
3759 larl %r1,foo@INDNTPOFF
3760 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3761 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3764 tls_as_opt="-m64 -Aesame --fatal-warnings"
3766 sh-*-* | sh[123456789lbe]*-*-*)
3768 .section ".tdata","awT",@progbits
3778 tls_as_opt=--fatal-warnings
3782 sparc*-sun-solaris2.*)
3789 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3791 .section ".tdata",#alloc,#write,#tls'
3796 .section ".tdata","awT",@progbits'
3799 tls_as_opt="-32 --fatal-warnings"
3801 conftest_s="$conftest_s
3804 sethi %tgd_hi22(foo), %o0
3805 add %o0, %tgd_lo10(foo), %o1
3806 add %l7, %o1, %o0, %tgd_add(foo)
3807 call __tls_get_addr, %tgd_call(foo)
3808 sethi %tldm_hi22(foo), %l1
3809 add %l1, %tldm_lo10(foo), %l2
3810 add %l7, %l2, %o0, %tldm_add(foo)
3811 call __tls_get_addr, %tldm_call(foo)
3812 sethi %tldo_hix22(foo), %l3
3813 xor %l3, %tldo_lox10(foo), %l4
3814 add %o0, %l4, %l5, %tldo_add(foo)
3815 sethi %tie_hi22(foo), %o3
3816 add %o3, %tie_lo10(foo), %o3
3817 ld [%l7 + %o3], %o2, %tie_ld(foo)
3818 add %g7, %o2, %o4, %tie_add(foo)
3819 sethi %tle_hix22(foo), %l1
3820 xor %l1, %tle_lox10(foo), %o5
3821 ld [%g7 + %o5], %o1"
3825 .section ".tdata","awT",@progbits
3828 addli r0, zero, tls_gd(foo)
3829 auli r0, zero, tls_gd_ha16(foo)
3830 addli r0, r0, tls_gd_lo16(foo)
3832 addli r0, zero, tls_ie(foo)
3833 auli r0, r0, tls_ie_ha16(foo)
3834 addli r0, r0, tls_ie_lo16(foo)'
3837 tls_as_opt="--fatal-warnings"
3841 .section ".tdata","awT",@progbits
3844 shl16insli r0, zero, hw0_last_tls_gd(foo)
3845 shl16insli r0, zero, hw1_last_tls_gd(foo)
3846 shl16insli r0, r0, hw0_tls_gd(foo)
3848 shl16insli r0, zero, hw1_last_tls_ie(foo)
3849 shl16insli r0, r0, hw0_tls_ie(foo)'
3852 tls_as_opt="--fatal-warnings"
3856 .section ".tdata","awT",@progbits
3859 movi a8, foo@TLSFUNC
3860 movi a10, foo@TLSARG
3861 callx8.tls a8, foo@TLSCALL'
3868 if test "x$enable_tls" = xno ; then
3869 : # TLS explicitly disabled.
3870 elif test "x$enable_tls" = xyes ; then
3871 set_have_as_tls=yes # TLS explicitly enabled.
3872 elif test -z "$tls_first_major"; then
3873 : # If we don't have a check, assume no support.
3875 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3876 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3877 [set_have_as_tls=yes])
3879 if test $set_have_as_tls = yes ; then
3880 AC_DEFINE(HAVE_AS_TLS, 1,
3881 [Define if your assembler and linker support thread-local storage.])
3884 # Target-specific assembler checks.
3886 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3887 gcc_cv_ld_static_dynamic=no
3888 gcc_cv_ld_static_option='-Bstatic'
3889 gcc_cv_ld_dynamic_option='-Bdynamic'
3890 if test $in_tree_ld = yes ; then
3891 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3892 gcc_cv_ld_static_dynamic=yes
3894 elif test x$gcc_cv_ld != x; then
3895 # Check if linker supports -Bstatic/-Bdynamic option
3896 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3897 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3898 gcc_cv_ld_static_dynamic=yes
3901 # AIX ld uses -b flags
3902 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3903 gcc_cv_ld_static_dynamic=yes
3904 gcc_cv_ld_static_option="-bstatic"
3905 gcc_cv_ld_dynamic_option="-bdynamic"
3907 # HP-UX ld uses -a flags to select between shared and archive.
3909 if test x"$gnu_ld" = xno; then
3910 gcc_cv_ld_static_dynamic=yes
3911 gcc_cv_ld_static_option="-aarchive_shared"
3912 gcc_cv_ld_dynamic_option="-adefault"
3915 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3917 gcc_cv_ld_static_dynamic=yes
3922 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3923 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3924 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3925 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3926 [Define to the linker option to disable use of shared objects.])
3927 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3928 [Define to the linker option to enable use of shared objects.])
3930 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3932 AC_MSG_CHECKING(linker --version-script option)
3933 gcc_cv_ld_version_script=no
3934 ld_version_script_option=''
3935 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3936 gcc_cv_ld_version_script=yes
3937 ld_version_script_option='--version-script'
3938 elif test x$gcc_cv_ld != x; then
3940 # Solaris 2 ld always supports -M. It also supports a subset of
3941 # --version-script since Solaris 11.4, but requires
3942 # -z gnu-version-script-compat to activate.
3944 gcc_cv_ld_version_script=yes
3945 ld_version_script_option='-M'
3949 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3950 AC_MSG_RESULT($gcc_cv_ld_version_script)
3951 AC_SUBST(ld_version_script_option)
3953 AC_MSG_CHECKING(linker soname option)
3955 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3956 gcc_cv_ld_soname=yes
3957 ld_soname_option='-soname'
3958 elif test x$gcc_cv_ld != x; then
3961 gcc_cv_ld_soname=yes
3962 ld_soname_option='-install_name'
3964 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3965 # ld compatiblity since some Solaris 10 update.
3967 gcc_cv_ld_soname=yes
3968 ld_soname_option='-h'
3972 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3973 AC_MSG_RESULT($gcc_cv_ld_soname)
3974 AC_SUBST(ld_soname_option)
3976 if test x"$demangler_in_ld" = xyes; then
3977 AC_MSG_CHECKING(linker --demangle support)
3978 gcc_cv_ld_demangle=no
3979 if test $in_tree_ld = yes; then
3980 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3981 gcc_cv_ld_demangle=yes
3983 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3984 # Check if the GNU linker supports --demangle option
3985 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3986 gcc_cv_ld_demangle=yes
3989 if test x"$gcc_cv_ld_demangle" = xyes; then
3990 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3991 [Define if your linker supports --demangle option.])
3993 AC_MSG_RESULT($gcc_cv_ld_demangle)
3996 AC_MSG_CHECKING(linker plugin support)
3998 if test -f liblto_plugin.la; then
3999 save_ld_ver="$ld_ver"
4000 save_ld_vers_major="$ld_vers_major"
4001 save_ld_vers_minor="$ld_vers_minor"
4002 save_ld_is_gold="$ld_is_gold"
4006 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4008 # FIXME: ld_is_gold?
4009 ld_vers_major="$gcc_cv_gld_major_version"
4010 ld_vers_minor="$gcc_cv_gld_minor_version"
4012 # Determine plugin linker version.
4013 # FIXME: Partial duplicate from above, generalize.
4015 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4016 if echo "$ld_ver" | grep GNU > /dev/null; then
4017 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4019 ld_vers=`echo $ld_ver | sed -n \
4020 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4022 ld_vers=`echo $ld_ver | sed -n \
4023 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4025 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4026 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4031 # Determine plugin support.
4032 if echo "$ld_ver" | grep GNU > /dev/null; then
4033 # Require GNU ld or gold 2.21+ for plugin support by default.
4034 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4036 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4037 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4042 ld_ver="$save_ld_ver"
4043 ld_vers_major="$save_ld_vers_major"
4044 ld_vers_minor="$save_ld_vers_minor"
4045 ld_is_gold="$save_ld_is_gold"
4047 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4048 [Define to the level of your linker's plugin support.])
4049 AC_MSG_RESULT($gcc_cv_lto_plugin)
4051 # Target OS-specific assembler checks.
4053 case "$target_os" in
4055 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4056 gcc_cv_as_mmacosx_version_min,,
4057 [-mmacosx-version-min=10.1], [.text],,
4058 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4059 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4063 # Target CPU-specific assembler checks.
4067 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4068 [-mabi=lp64], [.text],,,)
4069 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4070 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4071 [Define if your assembler supports the -mabi option.])
4073 if test x$with_abi = xilp32; then
4074 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4075 Upgrade the Assembler.])
4077 if test x"$with_multilib_list" = xdefault; then
4078 TM_MULTILIB_CONFIG=lp64
4080 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4081 for aarch64_multilib in ${aarch64_multilibs}; do
4082 case ${aarch64_multilib} in
4084 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4085 Upgrade the Assembler.])
4093 # Check if we have binutils support for relocations types needed by -fpic
4094 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4097 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4098 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4099 [Define if your assembler supports relocs needed by -fpic.])])
4100 # Enable Branch Target Identification Mechanism and Return Address
4101 # Signing by default.
4102 AC_ARG_ENABLE(standard-branch-protection,
4104 AS_HELP_STRING([--enable-standard-branch-protection],
4105 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4106 AS_HELP_STRING([--disable-standard-branch-protection],
4107 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4112 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4117 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4118 Valid choices are 'yes' and 'no'.])
4123 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4124 AC_ARG_ENABLE(fix-cortex-a53-835769,
4126 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4127 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4128 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4129 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4134 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4139 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4140 Valid choices are 'yes' and 'no'.])
4146 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4147 AC_ARG_ENABLE(fix-cortex-a53-843419,
4149 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4150 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4151 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4152 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4157 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4162 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4163 Valid choices are 'yes' and 'no'.])
4171 # All TARGET_ABI_OSF targets.
4172 alpha*-*-linux* | alpha*-*-*bsd*)
4173 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4174 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4177 extbl $3, $2, $3 !lituse_bytoff!1
4178 ldq $2, a($29) !literal!1
4179 ldq $4, b($29) !literal!2
4180 ldq_u $3, 0($2) !lituse_base!1
4181 ldq $27, f($29) !literal!5
4182 jsr $26, ($27), f !lituse_jsr!5
4183 ldah $29, 0($26) !gpdisp!3
4184 lda $0, c($29) !gprel
4185 ldah $1, d($29) !gprelhigh
4186 lda $1, d($1) !gprellow
4187 lda $29, 0($29) !gpdisp!3],,
4188 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4189 [Define if your assembler supports explicit relocations.])])
4190 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4191 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4194 ldq $27, a($29) !literal!1
4195 jsr $26, ($27), a !lituse_jsrdirect!1],,
4196 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4197 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4201 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4202 [--mlink-relax], [.text],,
4203 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4204 [Define if your avr assembler supports --mlink-relax option.])])
4206 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4208 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4209 [Define if your avr assembler supports -mrmw option.])])
4211 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4212 gcc_cv_as_avr_mgccisr,,
4218 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4219 [Define if your avr assembler supports -mgcc-isr option.])])
4221 # Check how default linker description file implements .rodata for
4222 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4223 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4224 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4225 cat > conftest.s <<EOF
4226 .section .rodata,"a",@progbits
4228 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4233 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4234 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4235 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4236 if test -s conftest.nm
4238 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4240 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4241 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4243 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4244 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4245 cat conftest.nm >&AS_MESSAGE_LOG_FD
4246 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4247 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4250 AC_MSG_RESULT(test failed)
4251 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4252 cat conftest.s >&AS_MESSAGE_LOG_FD
4253 AC_MSG_WARN([[see `config.log' for details]])
4255 rm -f conftest.s conftest.o conftest.elf conftest.nm
4259 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4260 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4261 [-no-mul-bug-abort], [.text],,
4262 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4263 [Define if your assembler supports the -no-mul-bug-abort option.])])
4267 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4269 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4270 [Define if your assembler supports -relax option.])])
4272 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4273 gcc_cv_as_sparc_gotdata_op,,
4280 sethi %gdop_hix22(foo), %g1
4281 xor %g1, %gdop_lox10(foo), %g1
4282 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4283 [if test x$gcc_cv_ld != x \
4284 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4285 if test x$gcc_cv_objdump != x; then
4286 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4287 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4288 gcc_cv_as_sparc_gotdata_op=no
4290 gcc_cv_as_sparc_gotdata_op=yes
4295 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4296 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4298 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4299 gcc_cv_as_sparc_ua_pcrel,,
4307 .uaword %r_disp32(foo)],
4308 [if test x$gcc_cv_ld != x \
4309 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4310 gcc_cv_as_sparc_ua_pcrel=yes
4313 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4314 [Define if your assembler and linker support unaligned PC relative relocs.])
4316 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4317 gcc_cv_as_sparc_ua_pcrel_hidden,,
4322 .uaword %r_disp32(foo)
4323 .byte 0x32, 0x33, 0x34
4328 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4329 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4330 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4331 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4332 if $gcc_cv_objdump -R conftest 2> /dev/null \
4333 | grep 'DISP32' > /dev/null 2>&1; then
4336 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4340 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4341 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4342 ]) # unaligned pcrel relocs
4344 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4345 gcc_cv_as_sparc_offsetable_lo10,,
4348 or %g1, %lo(ab) + 12, %g1
4349 or %g1, %lo(ab + 12), %g1],
4350 [if test x$gcc_cv_objdump != x \
4351 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4352 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4353 gcc_cv_as_sparc_offsetable_lo10=yes
4355 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4356 [Define if your assembler supports offsetable %lo().])])
4358 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4359 gcc_cv_as_sparc_fmaf,,
4362 .register %g2, #scratch
4363 .register %g3, #scratch
4365 fmaddd %f0, %f2, %f4, %f6
4366 addxccc %g1, %g2, %g3
4367 fsrl32 %f2, %f4, %f8
4368 fnaddd %f10, %f12, %f14],,
4369 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4370 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4372 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4373 gcc_cv_as_sparc_sparc4,,
4376 .register %g2, #scratch
4377 .register %g3, #scratch
4380 1: cwbneg %g2, %g3, 1f
4383 aes_kexpand0 %f4, %f6, %f8
4384 des_round %f38, %f40, %f42, %f44
4385 camellia_f %f54, %f56, %f58, %f60
4386 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4387 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4388 [Define if your assembler supports SPARC4 instructions.])])
4390 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4391 gcc_cv_as_sparc_sparc5,,
4394 .register %g2, #scratch
4395 .register %g3, #scratch
4398 fpadd8 %f0, %f2, %f4],,
4399 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4400 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4402 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4403 gcc_cv_as_sparc_sparc6,,
4406 .register %g2, #scratch
4407 .register %g3, #scratch
4410 fpsll64x %f0, %f2, %f4],,
4411 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4412 [Define if your assembler supports SPARC6 instructions.])])
4414 gcc_GAS_CHECK_FEATURE([LEON instructions],
4415 gcc_cv_as_sparc_leon,,
4418 .register %g2, #scratch
4419 .register %g3, #scratch
4423 casa [[%g2]] 0xb, %g3, %g1],,
4424 [AC_DEFINE(HAVE_AS_LEON, 1,
4425 [Define if your assembler supports LEON instructions.])])
4429 i[34567]86-*-* | x86_64-*-*)
4433 # Full C++ conformance when using a shared libstdc++-v3 requires some
4434 # support from the Cygwin DLL, which in more recent versions exports
4435 # wrappers to aid in interposing and redirecting operators new, delete,
4436 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4437 # are configuring for a version of Cygwin that exports the wrappers.
4438 if test x$host = x$target && test x$host_cpu = xi686; then
4439 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4441 # Can't check presence of libc functions during cross-compile, so
4442 # we just have to assume we're building for an up-to-date target.
4443 gcc_ac_cygwin_dll_wrappers=yes
4445 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4446 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4447 [Define if you want to generate code by default that assumes that the
4448 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4451 cygwin* | pe | mingw32*)
4452 # Recent binutils allows the three-operand form of ".comm" on PE. This
4453 # definition is used unconditionally to initialise the default state of
4454 # the target option variable that governs usage of the feature.
4455 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4456 [2,19,52],,[.comm foo,1,32])
4457 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4458 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4459 [Define if your assembler supports specifying the alignment
4460 of objects allocated using the GAS .comm command.])
4461 # Used for DWARF 2 in PE
4462 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4463 gcc_cv_as_ix86_pe_secrel32,
4469 [if test x$gcc_cv_ld != x \
4470 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4471 gcc_cv_as_ix86_pe_secrel32=yes
4474 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4475 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4476 # Test if the assembler supports the extended form of the .section
4477 # directive that specifies section alignment. LTO support uses this,
4478 # but normally only after installation, so we warn but don't fail the
4479 # configure if LTO is enabled but the assembler does not support it.
4480 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4481 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4482 if test x$gcc_cv_as_section_has_align != xyes; then
4483 case ",$enable_languages," in
4485 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4492 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4493 [-xbrace_comment=no], [.text],,
4494 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4495 [Define if your assembler supports -xbrace_comment option.])])
4497 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4498 gcc_cv_as_ix86_filds,,,
4499 [filds (%ebp); fists (%ebp)],,
4500 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4501 [Define if your assembler uses filds and fists mnemonics.])])
4503 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4504 gcc_cv_as_ix86_fildq,,,
4505 [fildq (%ebp); fistpq (%ebp)],,
4506 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4507 [Define if your assembler uses fildq and fistq mnemonics.])])
4509 gcc_GAS_CHECK_FEATURE([cmov syntax],
4510 gcc_cv_as_ix86_cmov_sun_syntax,,,
4511 [cmovl.l %edx, %eax],,
4512 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4513 [Define if your assembler supports the Sun syntax for cmov.])])
4515 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4516 gcc_cv_as_ix86_ffreep,,,
4518 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4519 [Define if your assembler supports the ffreep mnemonic.])])
4521 gcc_GAS_CHECK_FEATURE([.quad directive],
4522 gcc_cv_as_ix86_quad,,,
4524 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4525 [Define if your assembler supports the .quad directive.])])
4527 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4528 gcc_cv_as_ix86_sahf,,,
4531 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4532 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4534 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4535 gcc_cv_as_ix86_interunit_movq,,,
4539 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4540 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4541 [Define if your assembler supports interunit movq mnemonic.])
4543 gcc_GAS_CHECK_FEATURE([hle prefixes],
4544 gcc_cv_as_ix86_hle,,,
4545 [lock xacquire cmpxchg %esi, (%ecx)],,
4546 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4547 [Define if your assembler supports HLE prefixes.])])
4549 gcc_GAS_CHECK_FEATURE([swap suffix],
4550 gcc_cv_as_ix86_swap,,,
4551 [movl.s %esp, %ebp],,
4552 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4553 [Define if your assembler supports the swap suffix.])])
4555 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4556 gcc_cv_as_ix86_diff_sect_delta,,,
4564 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4565 [Define if your assembler supports the subtraction of symbols in different sections.])])
4567 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4568 gcc_cv_as_ix86_rep_lock_prefix,,,
4574 lock addl %edi, (%eax,%esi)
4575 lock orl $0, (%esp)],,
4576 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4577 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4579 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4580 gcc_cv_as_ix86_ud2,,,
4582 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4583 [Define if your assembler supports the 'ud2' mnemonic.])])
4585 # Enforce 32-bit output with gas and gld.
4586 if test x$gas = xyes; then
4587 as_ix86_gas_32_opt="--32"
4589 if echo "$ld_ver" | grep GNU > /dev/null; then
4590 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4591 ld_ix86_gld_32_opt="-melf_i386_sol2"
4593 ld_ix86_gld_32_opt="-melf_i386"
4597 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4598 gcc_cv_as_ix86_tlsgdplt,,
4599 [$as_ix86_gas_32_opt],
4600 [call tls_gd@tlsgdplt],
4601 [if test x$gcc_cv_ld != x \
4602 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4603 gcc_cv_as_ix86_tlsgdplt=yes
4606 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4607 [Define if your assembler and linker support @tlsgdplt.])])
4610 .section .tdata,"aw'$tls_section_flag'",@progbits
4612 .section .text,"ax",@progbits
4613 call tls_ld@tlsldmplt'
4615 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4616 gcc_cv_as_ix86_tlsldmplt,,
4617 [$as_ix86_gas_32_opt],
4619 [if test x$gcc_cv_ld != x \
4620 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4621 gcc_cv_as_ix86_tlsldmplt=yes
4624 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4625 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4626 [Define to 1 if your assembler and linker support @tlsldmplt.])
4629 .section .text,"ax",@progbits
4631 .type _start, @function
4633 leal value@tlsldm(%ebx), %eax
4634 call ___tls_get_addr@plt
4636 .section .tdata,"aw'$tls_section_flag'",@progbits
4637 .type value, @object
4639 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4640 gcc_cv_as_ix86_tlsldm,,
4641 [$as_ix86_gas_32_opt],
4643 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4644 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4645 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4646 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4647 gcc_cv_as_ix86_tlsldm=yes
4651 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4652 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4653 [Define to 1 if your assembler and linker support @tlsldm.])
4664 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4665 gcc_cv_as_ix86_got32x,,
4666 [$as_ix86_gas_32_opt],
4668 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4669 && test x$gcc_cv_readelf != x \
4670 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4671 | grep R_386_GOT32X > /dev/null 2>&1 \
4672 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4673 if $gcc_cv_objdump -dw conftest 2>&1 \
4674 | grep 0xffffff > /dev/null 2>&1; then
4675 gcc_cv_as_ix86_got32x=no
4677 gcc_cv_as_ix86_got32x=yes
4681 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4682 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4683 [Define 0/1 if your assembler and linker support @GOT.])
4685 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4686 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4687 [$as_ix86_gas_32_opt],
4693 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4694 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4695 [Define true if the assembler supports '.long foo@GOTOFF'.])
4698 .section .text,"ax",@progbits
4700 .type _start, @function
4702 leal ld@tlsldm(%ecx), %eax
4703 call *___tls_get_addr@GOT(%ecx)
4704 leal gd@tlsgd(%ecx), %eax
4705 call *___tls_get_addr@GOT(%ecx)
4707 .section .tdata,"aw'$tls_section_flag'",@progbits
4715 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4716 gcc_cv_as_ix86_tls_get_addr_via_got,,
4717 [$as_ix86_gas_32_opt],
4719 [if test x$gcc_cv_ld != x \
4720 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4721 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4724 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4725 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4726 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4730 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4731 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4733 addl r15 = @ltoffx(x#), gp
4735 ld8.mov r16 = [[r15]], x#
4737 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4738 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4746 gcc_GAS_CHECK_FEATURE([.machine directive support],
4747 gcc_cv_as_machine_directive,,,
4748 [ .machine ppc7400])
4749 if test x$gcc_cv_as_machine_directive != xyes; then
4750 echo "*** This target requires an assembler supporting \".machine\"" >&2
4751 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4752 test x$build = x$target && exit 1
4758 *-*-aix*) conftest_s=' .machine "pwr5"
4761 *-*-darwin*) conftest_s=' .text
4763 *) conftest_s=' .machine power4
4768 gcc_GAS_CHECK_FEATURE([mfcr field support],
4769 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4771 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4772 [Define if your assembler supports mfcr field.])])
4775 *-*-aix*) conftest_s=' .csect .text[[PR]]
4777 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4781 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4782 *) conftest_s=' .text
4784 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4787 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4788 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4790 [AC_DEFINE(HAVE_AS_REL16, 1,
4791 [Define if your assembler supports R_PPC_REL16 relocs.])])
4794 *-*-aix*) conftest_s=' .machine "pwr7"
4797 *) conftest_s=' .machine power7
4802 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4803 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4805 [AC_DEFINE(HAVE_AS_VSX, 1,
4806 [Define if your assembler supports VSX instructions.])])
4808 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4809 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4810 [.gnu_attribute 4,1],,
4811 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4812 [Define if your assembler supports .gnu_attribute.])])
4814 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4815 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4816 [ .reloc .,R_PPC64_ENTRY; nop],,
4817 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4818 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4820 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4821 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4822 [ .reloc .,R_PPC_PLTSEQ; nop],,
4823 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4824 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4828 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4829 gcc_cv_as_aix_ref, [2,21,0],,
4830 [ .csect stuff[[rw]]
4836 [AC_DEFINE(HAVE_AS_REF, 1,
4837 [Define if your assembler supports .ref])])
4839 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4840 gcc_cv_as_aix_dwloc, [2,21,0],,
4845 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4846 [Define if your assembler supports AIX debug frame section label reference.])])
4852 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4853 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4854 [ lw $4,%gp_rel(foo)($4)],,
4855 [if test x$target_cpu_default = x
4856 then target_cpu_default=MASK_EXPLICIT_RELOCS
4857 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4860 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4861 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4862 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4863 [Define if the assembler understands -mno-shared.])])
4865 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4866 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4867 [.gnu_attribute 4,1],,
4868 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4869 [Define if your assembler supports .gnu_attribute.])])
4871 gcc_GAS_CHECK_FEATURE([.module support],
4872 gcc_cv_as_mips_dot_module,,[-32],
4875 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4876 [Define if your assembler supports .module.])])
4877 if test x$gcc_cv_as_mips_dot_module = xno \
4878 && test x$with_fp_32 != x; then
4880 [Requesting --with-fp-32= requires assembler support for .module.])
4883 gcc_GAS_CHECK_FEATURE([.micromips support],
4884 gcc_cv_as_micromips_support,,[--fatal-warnings],
4886 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4887 [Define if your assembler supports the .set micromips directive])])
4889 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4890 gcc_cv_as_mips_dtprelword, [2,18,0],,
4891 [.section .tdata,"awT",@progbits
4895 .dtprelword x+0x8000],,
4896 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4897 [Define if your assembler supports .dtprelword.])])
4899 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4900 gcc_cv_as_mips_dspr1_mult,,,
4910 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4911 [Define if your assembler supports DSPR1 mult.])])
4913 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4914 gcc_cv_as_ld_jalr_reloc=no
4915 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4916 if test $in_tree_ld = yes ; then
4917 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4918 && test $in_tree_ld_is_elf = yes; then
4919 gcc_cv_as_ld_jalr_reloc=yes
4921 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4922 echo ' .ent x' > conftest.s
4923 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4924 echo ' lw $25,%call16(y)($28)' >> conftest.s
4925 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4926 echo '1: jalr $25' >> conftest.s
4927 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4928 echo '1: jalr $25' >> conftest.s
4929 echo ' .end x' >> conftest.s
4930 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4931 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4932 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4933 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4934 gcc_cv_as_ld_jalr_reloc=yes
4940 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4941 if test x$target_cpu_default = x; then
4942 target_cpu_default=MASK_RELAX_PIC_CALLS
4944 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4947 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4949 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4950 [gcc_cv_ld_mips_personality_relaxation],
4951 [gcc_cv_ld_mips_personality_relaxation=no
4952 if test $in_tree_ld = yes ; then
4953 if test "$gcc_cv_gld_major_version" -eq 2 \
4954 -a "$gcc_cv_gld_minor_version" -ge 21 \
4955 -o "$gcc_cv_gld_major_version" -gt 2; then
4956 gcc_cv_ld_mips_personality_relaxation=yes
4958 elif test x$gcc_cv_as != x \
4959 -a x$gcc_cv_ld != x \
4960 -a x$gcc_cv_readelf != x ; then
4961 cat > conftest.s <<EOF
4963 .cfi_personality 0x80,indirect_ptr
4970 .section .data,"aw",@progbits
4974 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4975 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4976 if $gcc_cv_readelf -d conftest 2>&1 \
4977 | grep TEXTREL > /dev/null 2>&1; then
4979 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4980 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4983 gcc_cv_ld_mips_personality_relaxation=yes
4987 rm -f conftest.s conftest.o conftest])
4988 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4989 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4990 [Define if your linker can relax absolute .eh_frame personality
4991 pointers into PC-relative form.])
4994 gcc_GAS_CHECK_FEATURE([-mnan= support],
4995 gcc_cv_as_mips_nan,,
4997 [AC_DEFINE(HAVE_AS_NAN, 1,
4998 [Define if the assembler understands -mnan=.])])
4999 if test x$gcc_cv_as_mips_nan = xno \
5000 && test x$with_nan != x; then
5002 [Requesting --with-nan= requires assembler support for -mnan=])
5006 # Earlier GAS versions generically support .gnu_attribute, but the
5007 # msp430 assembler will not do anything with it.
5008 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5009 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5010 [.gnu_attribute 4,1],,
5011 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5012 [Define if your assembler supports .gnu_attribute.])])
5013 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5014 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5015 [.mspabi_attribute 4,1],,
5016 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5017 [Define if your assembler supports .mspabi_attribute.])])
5018 if test x$enable_newlib_nano_formatted_io = xyes; then
5019 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5020 configured with --enable-newlib-nano-formatted-io.])
5024 gcc_GAS_CHECK_FEATURE([.attribute support],
5025 gcc_cv_as_riscv_attribute, [2,32,0],,
5026 [.attribute stack_align,4],,
5027 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5028 [Define if your assembler supports .attribute.])])
5031 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5032 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5033 [.gnu_attribute 8,1],,
5034 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5035 [Define if your assembler supports .gnu_attribute.])])
5036 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5037 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5042 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5043 [Define if your assembler supports .machine and .machinemode.])])
5044 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5045 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5046 [ .machine z13+vx ],,
5047 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5048 [Define if your assembler supports architecture modifiers.])])
5049 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5050 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5051 [ vl %v24,0(%r15),3 ],,
5052 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5053 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5058 # Mips and HP-UX need the GNU assembler.
5059 # Linux on IA64 might be able to use the Intel assembler.
5062 mips*-*-* | *-*-hpux* )
5063 if test x$gas_flag = xyes \
5064 || test x"$host" != x"$build" \
5065 || test ! -x "$gcc_cv_as" \
5066 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5069 echo "*** This configuration requires the GNU assembler" >&2
5075 # ??? Not all targets support dwarf2 debug_line, even within a version
5076 # of gas. Moreover, we need to emit a valid instruction to trigger any
5077 # info to the output file. So, as supported targets are added to gas 2.11,
5078 # add some instruction here to (also) show we expect this might work.
5079 # ??? Once 2.11 is released, probably need to add first known working
5080 # version to the per-target configury.
5082 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5083 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5084 | tilegx | tilepro | visium | xstormy16 | xtensa)
5094 if test x"$insn" != x; then
5096 .file 1 \"conftest.s\"
5099 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5100 gcc_cv_as_dwarf2_debug_line,
5101 [elf,2,11,0],, [$conftest_s],
5102 [if test x$gcc_cv_objdump != x \
5103 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5104 | grep debug_line > /dev/null 2>&1; then
5105 gcc_cv_as_dwarf2_debug_line=yes
5106 elif test x$gcc_cv_otool != x \
5107 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5108 | grep debug_line > /dev/null 2>&1; then
5109 gcc_cv_as_dwarf2_debug_line=yes
5112 # The .debug_line file table must be in the exact order that
5113 # we specified the files, since these indices are also used
5114 # by DW_AT_decl_file. Approximate this test by testing if
5115 # the assembler bitches if the same index is assigned twice.
5116 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5117 gcc_cv_as_dwarf2_file_buggy,,,
5121 if test $gcc_cv_as_dwarf2_debug_line = yes \
5122 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5123 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5124 [Define if your assembler supports dwarf2 .file/.loc directives,
5125 and preserves file table indices exactly as given.])
5127 if test $gcc_cv_as_leb128 = yes; then
5129 .file 1 \"conftest.s\"
5130 .loc 1 3 0 view .LVU1
5136 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5137 gcc_cv_as_dwarf2_debug_view,
5138 [elf,2,27,0],,[$conftest_s],,
5139 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5140 [Define if your assembler supports views in dwarf2 .loc directives.])])
5144 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5145 gcc_cv_as_gdwarf2_flag,
5146 [elf,2,11,0], [--gdwarf2], [$insn],,
5147 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5148 [Define if your assembler supports the --gdwarf2 option.])])
5150 gcc_GAS_CHECK_FEATURE([--gstabs option],
5151 gcc_cv_as_gstabs_flag,
5152 [elf,2,11,0], [--gstabs], [$insn],,
5153 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5154 [Define if your assembler supports the --gstabs option.])])
5156 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5157 gcc_cv_as_debug_prefix_map_flag,
5158 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5159 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5160 [Define if your assembler supports the --debug-prefix-map option.])])
5163 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5164 gcc_cv_as_compress_debug,,,,
5165 [# gas compiled without zlib cannot compress debug sections and warns
5166 # about it, but still exits successfully. So check for this, too.
5167 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5169 gcc_cv_as_compress_debug=0
5170 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5171 # defaulting to the ELF gABI format.
5172 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5174 gcc_cv_as_compress_debug=2
5175 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5176 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5177 # Before binutils 2.26, gas only supported --compress-debug-options and
5178 # emitted the traditional GNU format.
5179 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5181 gcc_cv_as_compress_debug=1
5182 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5183 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5185 gcc_cv_as_compress_debug=0
5187 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5188 [Define to the level of your assembler's compressed debug section support.])
5189 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5190 [Define to the assembler option to enable compressed debug sections.])
5191 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5192 [Define to the assembler option to disable compressed debug sections.])
5194 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5197 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5198 [Define if your assembler supports .lcomm with an alignment field.])])
5200 if test x$with_sysroot = x && test x$host = x$target \
5201 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5202 && test "$prefix" != "NONE"; then
5203 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5204 [Define to PREFIX/include if cpp should also search that directory.])
5207 # Determine the version of glibc, if any, used on the target.
5208 AC_MSG_CHECKING([for target glibc version])
5209 AC_ARG_WITH([glibc-version],
5210 [AS_HELP_STRING([--with-glibc-version=M.N],
5211 [assume GCC used with glibc version M.N or later])], [
5212 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5213 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5214 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5216 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5218 glibc_version_major=0
5219 glibc_version_minor=0
5220 [if test -f $target_header_dir/features.h \
5221 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5222 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5223 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5224 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5226 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5227 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5228 [GNU C Library major version number used on the target, or 0.])
5229 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5230 [GNU C Library minor version number used on the target, or 0.])
5232 AC_ARG_ENABLE(gnu-unique-object,
5233 [AS_HELP_STRING([--enable-gnu-unique-object],
5234 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5235 [case $enable_gnu_unique_object in
5237 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5238 Valid choices are 'yes' and 'no'.]) ;;
5240 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5242 [.type foo, '$target_type_format_char'gnu_unique_object],,
5243 # We need to unquote above to to use the definition from config.gcc.
5244 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5245 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5247 if test x$enable_gnu_unique_object = xyes; then
5248 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5249 [Define if your assembler supports @gnu_unique_object.])
5252 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5253 [gcc_cv_as_line_zero],
5254 [gcc_cv_as_line_zero=no
5255 if test $in_tree_gas = yes; then
5256 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5257 elif test "x$gcc_cv_as" != x; then
5258 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5259 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5260 test "x`cat conftest.out`" = x
5262 gcc_cv_as_line_zero=yes
5264 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5265 cat conftest.s >&AS_MESSAGE_LOG_FD
5266 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5267 cat conftest.out >&AS_MESSAGE_LOG_FD
5269 rm -f conftest.o conftest.s conftest.out
5271 if test "x$gcc_cv_as_line_zero" = xyes; then
5272 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5273 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5276 AC_MSG_CHECKING(support for thin archives)
5277 thin_archive_support=no
5278 echo 'int main (void) { return 0; }' > conftest.c
5279 if ($AR --version | sed 1q | grep "GNU ar" \
5280 && $CC $CFLAGS -c conftest.c \
5281 && $AR rcT conftest.a conftest.o \
5282 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5283 thin_archive_support=yes
5285 rm -f conftest.c conftest.o conftest.a conftest
5286 AC_MSG_RESULT($thin_archive_support)
5287 AC_SUBST(thin_archive_support)
5289 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5290 gcc_cv_ld_eh_frame_hdr=no
5291 if test $in_tree_ld = yes ; then
5292 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5293 && test $in_tree_ld_is_elf = yes; then
5294 gcc_cv_ld_eh_frame_hdr=yes
5296 elif test x$gcc_cv_ld != x; then
5297 if echo "$ld_ver" | grep GNU > /dev/null; then
5298 # Check if linker supports --eh-frame-hdr option
5299 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5300 gcc_cv_ld_eh_frame_hdr=yes
5305 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5306 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5307 gcc_cv_ld_eh_frame_hdr=yes
5313 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5314 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5315 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5316 [Define if your linker supports .eh_frame_hdr.])
5318 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5320 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5321 gcc_cv_ld_eh_frame_ciev3=no
5322 if test $in_tree_ld = yes ; then
5323 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5324 && test $in_tree_ld_is_elf = yes; then
5325 gcc_cv_ld_eh_frame_ciev3=yes
5327 elif test x$gcc_cv_ld != x; then
5328 if echo "$ld_ver" | grep GNU > /dev/null; then
5329 gcc_cv_ld_eh_frame_ciev3=yes
5330 if test 0"$ld_date" -lt 20040513; then
5331 if test -n "$ld_date"; then
5332 # If there was date string, but was earlier than 2004-05-13, fail
5333 gcc_cv_ld_eh_frame_ciev3=no
5334 elif test "$ld_vers_major" -lt 2; then
5335 gcc_cv_ld_eh_frame_ciev3=no
5336 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5337 gcc_cv_ld_eh_frame_ciev3=no
5343 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5344 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5345 gcc_cv_ld_eh_frame_ciev3=yes
5351 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5352 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5353 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5354 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5356 AC_MSG_CHECKING(linker position independent executable support)
5358 if test $in_tree_ld = yes ; then
5360 # Full PIE support on Solaris was only introduced in gld 2.26.
5361 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5362 *) gcc_gld_pie_min_version=15 ;;
5364 if test "$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 \
5365 && test $in_tree_ld_is_elf = yes; then
5368 elif test x$gcc_cv_ld != x; then
5369 # Check if linker supports -pie option
5370 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5374 if echo "$ld_ver" | grep GNU > /dev/null \
5375 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5382 *-*-solaris2.1[[1-9]]*)
5383 # Solaris 11.3 added PIE support.
5384 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5391 if test x"$gcc_cv_ld_pie" = xyes; then
5392 AC_DEFINE(HAVE_LD_PIE, 1,
5393 [Define if your linker supports PIE option.])
5395 AC_MSG_RESULT($gcc_cv_ld_pie)
5397 AC_MSG_CHECKING(linker PIE support with copy reloc)
5398 gcc_cv_ld_pie_copyreloc=no
5399 if test $gcc_cv_ld_pie = yes ; then
5400 if test $in_tree_ld = yes ; then
5401 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5402 gcc_cv_ld_pie_copyreloc=yes
5404 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5405 # Check if linker supports -pie option with copy reloc
5407 i?86-*-linux* | x86_64-*-linux*)
5408 cat > conftest1.s <<EOF
5411 .type a_glob, @object
5416 cat > conftest2.s <<EOF
5419 .type main, @function
5421 movl %eax, a_glob(%rip)
5424 .section .data.rel,"aw",@progbits
5429 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5430 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5431 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5432 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5433 gcc_cv_ld_pie_copyreloc=yes
5435 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5440 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5441 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5442 [Define 0/1 if your linker supports -pie option with copy reloc.])
5443 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5445 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5446 gcc_cv_ld_eh_gc_sections=no
5447 if test $in_tree_ld = yes ; then
5448 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5449 && test $in_tree_ld_is_elf = yes; then
5450 gcc_cv_ld_eh_gc_sections=yes
5452 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5453 cat > conftest.s <<EOF
5456 .type _start, @function
5459 .size _start, .-_start
5460 .section .text.foo,"ax",@progbits
5461 .type foo, @function
5465 .section .gcc_except_table.foo,"a",@progbits
5468 .section .eh_frame,"a",@progbits
5471 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5472 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5473 | grep "gc-sections option ignored" > /dev/null; then
5474 gcc_cv_ld_eh_gc_sections=no
5475 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5476 | grep gcc_except_table > /dev/null; then
5477 gcc_cv_ld_eh_gc_sections=yes
5478 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5479 if test x$gcc_cv_as_comdat_group != xyes; then
5480 gcc_cv_ld_eh_gc_sections=no
5481 cat > conftest.s <<EOF
5484 .type _start, @function
5487 .size _start, .-_start
5488 .section .gnu.linkonce.t.foo,"ax",@progbits
5489 .type foo, @function
5493 .section .gcc_except_table.foo,"a",@progbits
5496 .section .eh_frame,"a",@progbits
5499 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5500 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5501 | grep "gc-sections option ignored" > /dev/null; then
5502 gcc_cv_ld_eh_gc_sections=no
5503 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5504 | grep gcc_except_table > /dev/null; then
5505 gcc_cv_ld_eh_gc_sections=yes
5511 rm -f conftest.s conftest.o conftest
5515 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5516 gcc_cv_ld_eh_gc_sections=no
5519 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5520 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5521 [Define if your linker supports garbage collection of
5522 sections in presence of EH frames.])
5524 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5526 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5527 gcc_cv_ld_eh_gc_sections_bug=no
5528 if test $in_tree_ld = yes ; then
5529 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5530 && test $in_tree_ld_is_elf = yes; then
5531 gcc_cv_ld_eh_gc_sections_bug=yes
5533 elif test x$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
5534 gcc_cv_ld_eh_gc_sections_bug=yes
5535 cat > conftest.s <<EOF
5538 .type _start, @function
5541 .size _start, .-_start
5542 .section .text.startup.foo,"ax",@progbits
5543 .type foo, @function
5547 .section .gcc_except_table.foo,"a",@progbits
5550 .section .eh_frame,"a",@progbits
5553 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5554 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5555 | grep "gc-sections option ignored" > /dev/null; then
5557 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5558 | grep gcc_except_table > /dev/null; then
5559 gcc_cv_ld_eh_gc_sections_bug=no
5562 rm -f conftest.s conftest.o conftest
5564 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5565 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5566 [Define if your linker has buggy garbage collection of
5567 sections support when .text.startup.foo like sections are used.])
5569 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5571 AC_MSG_CHECKING(linker for compressed debug sections)
5572 # gold/gld support compressed debug sections since binutils 2.19/2.21
5573 # In binutils 2.26, gld gained support for the ELF gABI format.
5574 if test $in_tree_ld = yes ; then
5575 gcc_cv_ld_compress_debug=0
5576 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5577 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5578 gcc_cv_ld_compress_debug=2
5579 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5580 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5581 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5582 gcc_cv_ld_compress_debug=3
5583 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5584 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5585 && test $in_tree_ld_is_elf = yes; then
5586 gcc_cv_ld_compress_debug=1
5588 elif echo "$ld_ver" | grep GNU > /dev/null; then
5589 if test "$ld_vers_major" -lt 2 \
5590 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5591 gcc_cv_ld_compress_debug=0
5592 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5593 gcc_cv_ld_compress_debug=1
5595 gcc_cv_ld_compress_debug=3
5596 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5598 if test $ld_is_gold = yes; then
5599 gcc_cv_ld_compress_debug=2
5600 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5606 # Introduced in Solaris 11.2.
5607 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5608 gcc_cv_ld_compress_debug=3
5609 gcc_cv_ld_compress_debug_option="-z compress-sections"
5611 gcc_cv_ld_compress_debug=0
5615 # Assume linkers other than GNU ld don't support compessed debug
5617 gcc_cv_ld_compress_debug=0
5622 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5623 [Define to the level of your linker's compressed debug section support.])
5624 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5625 [Define to the linker option to enable compressed debug sections.])
5626 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5628 if test x"$ld64_flag" = x"yes"; then
5630 # Set defaults for possibly untestable items.
5631 gcc_cv_ld64_export_dynamic=0
5633 if test "$build" = "$host"; then
5639 # On Darwin, because of FAT library support, it is often possible to execute
5640 # exes from compatible archs even when the host differs from the build system.
5641 case "$build","$host" in
5642 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5647 # If the configurer specified a minimum ld64 version to be supported, then use
5648 # that to determine feature support.
5649 if test x"${gcc_cv_ld64_version}" != x; then
5650 AC_MSG_CHECKING(ld64 specified version)
5651 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5652 AC_MSG_RESULT($gcc_cv_ld64_major)
5653 if test "$gcc_cv_ld64_major" -ge 236; then
5654 gcc_cv_ld64_export_dynamic=1
5656 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5657 # If the version was not specified, try to find it.
5658 AC_MSG_CHECKING(linker version)
5659 if test x"${gcc_cv_ld64_version}" = x; then
5660 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5662 AC_MSG_RESULT($gcc_cv_ld64_version)
5664 AC_MSG_CHECKING(linker for -export_dynamic support)
5665 gcc_cv_ld64_export_dynamic=1
5666 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5667 gcc_cv_ld64_export_dynamic=0
5669 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5672 if test x"${gcc_cv_ld64_version}" != x; then
5673 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5674 [Define to ld64 version.])
5677 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5678 [Define to 1 if ld64 supports '-export_dynamic'.])
5685 AC_CACHE_CHECK(linker --as-needed support,
5686 gcc_cv_ld_as_needed,
5687 [gcc_cv_ld_as_needed=no
5688 gcc_cv_ld_as_needed_option='--as-needed'
5689 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5690 if test $in_tree_ld = yes ; then
5691 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5692 && test $in_tree_ld_is_elf = yes; then
5693 gcc_cv_ld_as_needed=yes
5694 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5695 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5696 gcc_cv_ld_no_as_needed_option='--pop-state'
5699 elif test x$gcc_cv_ld != x; then
5700 # Check if linker supports --as-needed and --no-as-needed options
5701 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5702 gcc_cv_ld_as_needed=yes
5703 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5704 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5705 && echo "$ld_ver" | grep GNU > /dev/null \
5706 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5707 # Use these options only when both ld.bfd and ld.gold support
5708 # --push-state/--pop-state, which unfortunately wasn't added
5710 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5711 gcc_cv_ld_no_as_needed_option='--pop-state'
5714 case "$target:$gnu_ld" in
5716 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5718 gcc_cv_ld_as_needed=yes
5719 gcc_cv_ld_as_needed_option="-z ignore"
5720 gcc_cv_ld_no_as_needed_option="-z record"
5724 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5725 # dl_iterate_phdr, i.e. since Solaris 11.
5727 *-*-solaris2.1[[1-9]]*)
5729 i?86-*-* | x86_64-*-*)
5730 if echo "$ld_ver" | grep GNU > /dev/null; then
5731 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5732 gcc_cv_ld_as_needed=no
5738 gcc_cv_ld_as_needed=no
5742 if test x"$gcc_cv_ld_as_needed" = xyes; then
5743 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5744 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5745 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5746 [Define to the linker option to ignore unused dependencies.])
5747 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5748 [Define to the linker option to keep unused dependencies.])
5751 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5752 saved_LDFLAGS="$LDFLAGS"
5753 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5754 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5755 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5756 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5758 LDFLAGS="$saved_LDFLAGS"
5759 if test "x$gcc_cv_ld_clearcap" = xyes; then
5760 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5761 [Define if the linker supports clearing hardware capabilities via mapfile.])
5762 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5764 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5770 emul_name="-melf32lppc"
5773 emul_name="-melf32ppc"
5776 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5778 [gcc_cv_ld_ppc_attr=no
5779 if test x"$ld_is_gold" = xyes; then
5780 gcc_cv_ld_ppc_attr=yes
5781 elif test $in_tree_ld = yes ; then
5782 if test "$gcc_cv_gld_major_version" -eq 2 \
5783 -a "$gcc_cv_gld_minor_version" -ge 28 \
5784 -o "$gcc_cv_gld_major_version" -gt 2; then
5785 gcc_cv_ld_ppc_attr=yes
5787 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5788 # check that merging the long double .gnu_attribute doesn't warn
5789 cat > conftest1.s <<EOF
5792 cat > conftest2.s <<EOF
5795 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5796 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5797 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5798 && test ! -s conftest.err; then
5799 gcc_cv_ld_ppc_attr=yes
5801 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5804 if test x$gcc_cv_ld_ppc_attr = xyes; then
5805 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5806 [Define if your PowerPC linker has .gnu.attributes long double support.])
5811 case "$target:$tm_file" in
5812 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5815 emul_name="-melf64lppc"
5818 emul_name="-melf64ppc"
5821 emul_name="-melf64ppc_fbsd"
5824 AC_CACHE_CHECK(linker support for omitting dot symbols,
5825 gcc_cv_ld_no_dot_syms,
5826 [gcc_cv_ld_no_dot_syms=no
5827 if test x"$ld_is_gold" = xyes; then
5828 gcc_cv_ld_no_dot_syms=yes
5829 elif test $in_tree_ld = yes ; then
5830 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5831 gcc_cv_ld_no_dot_syms=yes
5833 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5834 cat > conftest1.s <<EOF
5838 cat > conftest2.s <<EOF
5839 .section ".opd","aw"
5844 .quad .LEfoo,.TOC.@tocbase,0
5850 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5851 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5852 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5853 gcc_cv_ld_no_dot_syms=yes
5855 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5858 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5859 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5860 [Define if your PowerPC64 linker only needs function descriptor syms.])
5863 AC_CACHE_CHECK(linker large toc support,
5864 gcc_cv_ld_large_toc,
5865 [gcc_cv_ld_large_toc=no
5866 if test x"$ld_is_gold" = xyes; then
5867 gcc_cv_ld_large_toc=yes
5868 elif test $in_tree_ld = yes ; then
5869 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5870 gcc_cv_ld_large_toc=yes
5872 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5873 cat > conftest.s <<EOF
5874 .section ".tbss","awT",@nobits
5880 addis 9,13,ie0@got@tprel@ha
5881 ld 9,ie0@got@tprel@l(9)
5883 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5884 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5885 gcc_cv_ld_large_toc=yes
5887 rm -f conftest conftest.o conftest.s
5890 if test x"$gcc_cv_ld_large_toc" = xyes; then
5891 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5892 [Define if your PowerPC64 linker supports a large TOC.])
5895 AC_CACHE_CHECK(linker toc pointer alignment,
5896 gcc_cv_ld_toc_align,
5897 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5898 cat > conftest.s <<EOF
5903 .section .data.rel.ro,"aw",@progbits
5908 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5909 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5910 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5912 rm -f conftest conftest.o conftest.s
5915 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5916 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5917 [Define to .TOC. alignment forced by your linker.])
5924 AC_CACHE_CHECK(linker large toc support,
5925 gcc_cv_ld_large_toc,
5926 [gcc_cv_ld_large_toc=no
5927 if test x$gcc_cv_as != x ; then
5928 cat > conftest.s <<EOF
5938 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5939 gcc_cv_ld_large_toc=yes
5941 rm -f conftest conftest.o conftest.s
5944 if test x"$gcc_cv_ld_large_toc" = xyes; then
5945 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5946 [Define if your PowerPC64 linker supports a large TOC.])
5951 AC_CACHE_CHECK(linker --build-id support,
5953 [gcc_cv_ld_buildid=no
5954 if test $in_tree_ld = yes ; then
5955 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5956 "$gcc_cv_gld_minor_version" -ge 18 -o \
5957 "$gcc_cv_gld_major_version" -gt 2 \
5958 && test $in_tree_ld_is_elf = yes; then
5959 gcc_cv_ld_buildid=yes
5961 elif test x$gcc_cv_ld != x; then
5962 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5963 gcc_cv_ld_buildid=yes
5966 if test x"$gcc_cv_ld_buildid" = xyes; then
5967 AC_DEFINE(HAVE_LD_BUILDID, 1,
5968 [Define if your linker supports --build-id.])
5971 AC_ARG_ENABLE(linker-build-id,
5972 [AS_HELP_STRING([--enable-linker-build-id],
5973 [compiler will always pass --build-id to linker])],
5975 enable_linker_build_id=no)
5977 if test x"$enable_linker_build_id" = xyes; then
5978 if test x"$gcc_cv_ld_buildid" = xyes; then
5979 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5980 [Define if gcc should always pass --build-id to linker.])
5982 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5986 # In binutils 2.21, GNU ld gained support for new emulations fully
5987 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5988 AC_CACHE_CHECK(linker *_sol2 emulation support,
5989 gcc_cv_ld_sol2_emulation,
5990 [gcc_cv_ld_sol2_emulation=no
5991 if test $in_tree_ld = yes ; then
5992 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5993 "$gcc_cv_gld_minor_version" -ge 21 -o \
5994 "$gcc_cv_gld_major_version" -gt 2 \
5995 && test $in_tree_ld_is_elf = yes; then
5996 gcc_cv_ld_sol2_emulation=yes
5998 elif test x$gcc_cv_ld != x; then
5999 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6000 grep _sol2 > /dev/null; then
6001 gcc_cv_ld_sol2_emulation=yes
6004 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6005 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6006 [Define if your linker supports the *_sol2 emulations.])
6009 AC_CACHE_CHECK(linker --sysroot support,
6011 [gcc_cv_ld_sysroot=no
6012 if test $in_tree_ld = yes ; then
6013 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6014 gcc_cv_ld_sysroot=yes
6016 elif test x$gcc_cv_ld != x; then
6017 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6018 gcc_cv_ld_sysroot=yes
6021 if test x"$gcc_cv_ld_sysroot" = xyes; then
6022 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6023 [Define if your linker supports --sysroot.])
6028 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6029 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6030 gcc_cv_solaris_crts,
6031 [gcc_cv_solaris_crts=no
6032 if test x$host != x$target; then
6033 if test "x$with_sysroot" = xyes; then
6034 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6036 target_sysroot="${with_sysroot}"
6039 target_libdir="$target_sysroot/usr/lib"
6040 # At the time they were added, gcrt1.o became a symlink for backwards
6041 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6043 i?86-*-solaris2* | x86_64-*-solaris2*)
6044 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6047 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6052 if test x$gcc_cv_solaris_crts = xyes; then
6053 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6054 [Define if the system-provided CRTs are present on Solaris.])
6057 AC_ARG_ENABLE(libssp,
6058 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6059 [case "${enableval}" in
6063 AC_MSG_ERROR([unknown libssp setting $enableval])
6067 # Test for stack protector support in target C library.
6068 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6069 gcc_cv_libc_provides_ssp,
6070 [gcc_cv_libc_provides_ssp=no
6071 if test "x$enable_libssp" = "xno"; then
6072 gcc_cv_libc_provides_ssp=yes
6073 elif test "x$enable_libssp" = "xyes"; then
6074 gcc_cv_libc_provides_ssp=no
6078 # All versions of musl provide stack protector
6079 gcc_cv_libc_provides_ssp=yes;;
6080 *-*-linux* | *-*-kfreebsd*-gnu)
6081 # glibc 2.4 and later provides __stack_chk_fail and
6082 # either __stack_chk_guard, or TLS access to stack guard canary.
6083 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6084 [if test -f $target_header_dir/features.h \
6085 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6086 $target_header_dir/features.h > /dev/null; then
6087 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6088 $target_header_dir/features.h > /dev/null && \
6089 test -f $target_header_dir/bits/uClibc_config.h && \
6090 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6091 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6092 gcc_cv_libc_provides_ssp=yes
6094 # all versions of Bionic support stack protector
6095 elif test -f $target_header_dir/sys/cdefs.h \
6096 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6097 $target_header_dir/sys/cdefs.h > /dev/null; then
6098 gcc_cv_libc_provides_ssp=yes
6102 # Avoid complicated tests (see
6103 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6104 # simply assert that glibc does provide this, which is true for all
6105 # realistically usable GNU/Hurd configurations.
6106 # All supported versions of musl provide it as well
6107 gcc_cv_libc_provides_ssp=yes;;
6108 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6109 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6110 [echo "no __stack_chk_fail on this target"])
6112 *) gcc_cv_libc_provides_ssp=no ;;
6116 if test x$gcc_cv_libc_provides_ssp = xyes; then
6117 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6118 [Define if your target C library provides stack protector support])
6121 # Check whether --enable-default-ssp was given.
6122 AC_ARG_ENABLE(default-ssp,
6123 [AS_HELP_STRING([--enable-default-ssp],
6124 [enable Stack Smashing Protection as default])],[
6125 if test x$gcc_cv_libc_provides_ssp = xyes; then
6127 ia64*-*-*) enable_default_ssp=no ;;
6128 *) enable_default_ssp=$enableval ;;
6131 enable_default_ssp=no
6133 enable_default_ssp=no)
6134 if test x$enable_default_ssp = xyes ; then
6135 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6136 [Define if your target supports default stack protector and it is enabled.])
6138 AC_SUBST([enable_default_ssp])
6140 # Test for <sys/sdt.h> on the target.
6141 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6142 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6144 if test -f $target_header_dir/sys/sdt.h; then
6146 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6147 [Define if your target C library provides sys/sdt.h])
6149 AC_MSG_RESULT($have_sys_sdt_h)
6151 # Check if TFmode long double should be used by default or not.
6152 # Some glibc targets used DFmode long double, but with glibc 2.4
6153 # and later they can use TFmode.
6155 powerpc*-*-linux* | \
6159 AC_ARG_WITH(long-double-128,
6160 [AS_HELP_STRING([--with-long-double-128],
6161 [use 128-bit long double by default])],
6162 gcc_cv_target_ldbl128="$with_long_double_128", [
6164 s390*-*-linux-musl*)
6165 gcc_cv_target_ldbl128=yes
6167 powerpc*-*-linux-musl*)
6168 gcc_cv_target_ldbl128=no
6171 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6172 [gcc_cv_target_ldbl128=no
6173 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6174 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6175 && gcc_cv_target_ldbl128=yes
6183 if test x$gcc_cv_target_ldbl128 = xyes; then
6184 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6185 [Define if TFmode long double should be the default])
6188 # Check if TFmode long double target should use the IBM extended double or IEEE
6189 # 128-bit floating point formats if long doubles are 128-bits long. The long
6190 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6191 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6193 AC_ARG_WITH([long-double-format],
6194 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6195 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6196 case "$target:$with_long_double_format" in
6197 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6200 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6201 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6203 power7 | power8 | power9 | power1*)
6207 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6208 supported if the default cpu is power7 or newer])
6209 with_long_double_format=""
6213 xpowerpc64*-*-linux*:*)
6214 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6215 with_long_double_format=""
6218 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6219 on 64-bit PowerPC VSX Linux systems])
6220 with_long_double_format=""
6225 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6226 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6227 gcc_cv_libc_provides_hwcap_in_tcb=no
6230 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6233 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6234 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6235 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6238 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6239 gcc_cv_target_dl_iterate_phdr=unknown
6242 # <link.h> needs both a dl_iterate_phdr declaration and support for
6243 # compilation with largefile support.
6244 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6245 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6246 gcc_cv_target_dl_iterate_phdr=yes
6248 gcc_cv_target_dl_iterate_phdr=no
6251 *-*-dragonfly* | *-*-freebsd*)
6252 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6253 gcc_cv_target_dl_iterate_phdr=yes
6255 gcc_cv_target_dl_iterate_phdr=no
6259 gcc_cv_target_dl_iterate_phdr=yes
6262 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6263 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6264 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6265 [Define if your target C library provides the `dl_iterate_phdr' function.])
6267 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6269 # We no longer support different GC mechanisms. Emit an error if
6270 # the user configures with --with-gc.
6272 [AS_HELP_STRING([--with-gc={page,zone}],
6273 [this option is not supported anymore. It used to choose
6274 the garbage collection mechanism to use with the compiler])],
6275 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6278 # Libraries to use on the host. This will normally be set by the top
6279 # level Makefile. Here we simply capture the value for our Makefile.
6280 if test -z "${HOST_LIBS+set}"; then
6285 # Use the system's zlib library.
6288 dnl Very limited version of automake's enable-maintainer-mode
6290 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6291 dnl maintainer-mode is disabled by default
6292 AC_ARG_ENABLE(maintainer-mode,
6293 [AS_HELP_STRING([--enable-maintainer-mode],
6294 [enable make rules and dependencies not useful
6295 (and sometimes confusing) to the casual installer])],
6296 maintainer_mode=$enableval,
6299 AC_MSG_RESULT($maintainer_mode)
6301 if test "$maintainer_mode" = "yes"; then
6308 dnl Whether to prevent multiple front-ends from linking at the same time
6310 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6311 AC_ARG_ENABLE(link-mutex,
6312 [AS_HELP_STRING([--enable-link-mutex],
6313 [avoid linking multiple front-ends at once to avoid thrashing
6314 on the build machine])],
6315 do_link_mutex=$enableval,
6317 AC_MSG_RESULT($do_link_mutex)
6319 if test "$do_link_mutex" = "yes"; then
6324 AC_SUBST(DO_LINK_MUTEX)
6330 # Make empty files to contain the specs and options for each language.
6331 # Then add #include lines to for a compiler that has specs and/or options.
6337 # These (without "all_") are set in each config-lang.in.
6338 # `language' must be a single word so is spelled singularly.
6341 all_outputs='Makefile'
6342 # List of language configure and makefile fragments.
6343 all_lang_configurefrags=
6345 # Additional files for gengtype
6346 all_gtfiles="$target_gtfiles"
6348 # These are the languages that are set in --enable-languages,
6349 # and are available in the GCC tree.
6350 all_selected_languages=
6352 # Add the language fragments.
6353 # Languages are added via two mechanisms. Some information must be
6354 # recorded in makefile variables, these are defined in config-lang.in.
6355 # We accumulate them and plug them into the main Makefile.
6356 # The other mechanism is a set of hooks for each of the main targets
6357 # like `clean', `install', etc.
6359 language_hooks="Make-hooks"
6361 for lang in ${srcdir}/*/config-lang.in
6364 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6366 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6367 if test "x$lang_alias" = x
6369 echo "$lang doesn't set \$language." 1>&2
6372 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6373 subdirs="$subdirs $subdir"
6375 # $gcc_subdir is where the gcc integration files are to be found
6376 # for a language, both for internal compiler purposes (compiler
6377 # sources implementing front-end to GCC tree converters), and for
6378 # build infrastructure purposes (Make-lang.in, etc.)
6380 # This will be <subdir> (relative to $srcdir) if a line like
6381 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6382 # is found in <langdir>/config-lang.in, and will remain <langdir>
6385 # Except for the language alias (fetched above), the regular
6386 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6387 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6388 # only this and the language alias.
6390 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6391 if [ "$gcc_subdir" = "" ]; then
6392 gcc_subdir="$subdir"
6395 case ",$enable_languages," in
6397 all_selected_languages="$all_selected_languages $lang_alias"
6398 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6399 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6411 . ${srcdir}/$gcc_subdir/config-lang.in
6412 if test "x$language" = x
6414 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6419 case ",$enable_languages," in
6422 for i in $subdir_requires; do
6423 test -f "${srcdir}/$i/config-lang.in" && continue
6431 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
6432 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6433 if test -f $srcdir/$gcc_subdir/lang.opt; then
6434 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6435 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6437 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6438 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6440 all_languages="$all_languages $language"
6441 all_compilers="$all_compilers $compilers"
6442 all_outputs="$all_outputs $outputs"
6443 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6444 case ",$enable_languages," in
6446 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6448 AC_SUBST(enable_lto)
6455 for language in $all_selected_languages
6457 check_languages="$check_languages check-$language"
6461 for language in $all_selected_languages
6463 selftest_languages="$selftest_languages selftest-$language"
6466 # We link each language in with a set of hooks, reached indirectly via
6467 # lang.${target}. Only do so for selected languages.
6471 target_list="all.cross start.encap rest.encap tags \
6472 install-common install-man install-info install-pdf install-html dvi \
6473 pdf html uninstall info man srcextra srcman srcinfo \
6474 mostlyclean clean distclean maintainer-clean install-plugin"
6476 for t in $target_list
6479 for lang in $all_selected_languages
6483 echo "lang.$t: $x" >> Make-hooks
6487 # Option include files
6490 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6491 option_includes="option-includes.mk"
6492 AC_SUBST_FILE(option_includes)
6500 echo "dir ." > .gdbinit
6501 echo "dir ${srcdir}" >> .gdbinit
6502 if test x$gdb_needs_out_file_path = xyes
6504 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6506 if test "x$subdirs" != x; then
6509 echo "dir ${srcdir}/$s" >> .gdbinit
6512 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6513 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6515 # Put a breakpoint on __asan_report_error to help with debugging buffer
6518 *-fsanitize=address*)
6519 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6523 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6524 AC_SUBST(gcc_tooldir)
6527 # Find a directory in which to install a shared libgcc.
6529 AC_ARG_ENABLE(version-specific-runtime-libs,
6530 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6531 [specify that runtime libraries should be
6532 installed in a compiler-specific directory])])
6534 # Substitute configuration variables
6537 AC_SUBST(all_compilers)
6538 AC_SUBST(all_gtfiles)
6539 AC_SUBST(all_lang_configurefrags)
6540 AC_SUBST(all_lang_makefrags)
6541 AC_SUBST(all_languages)
6542 AC_SUBST(all_selected_languages)
6543 AC_SUBST(build_exeext)
6544 AC_SUBST(build_install_headers_dir)
6545 AC_SUBST(build_xm_file_list)
6546 AC_SUBST(build_xm_include_list)
6547 AC_SUBST(build_xm_defines)
6548 AC_SUBST(build_file_translate)
6549 AC_SUBST(check_languages)
6550 AC_SUBST(selftest_languages)
6551 AC_SUBST(cpp_install_dir)
6552 AC_SUBST(xmake_file)
6553 AC_SUBST(tmake_file)
6554 AC_SUBST(TM_ENDIAN_CONFIG)
6555 AC_SUBST(TM_MULTILIB_CONFIG)
6556 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6557 AC_SUBST(extra_gcc_objs)
6558 AC_SUBST(user_headers_inc_next_pre)
6559 AC_SUBST(user_headers_inc_next_post)
6560 AC_SUBST(extra_headers_list)
6561 AC_SUBST(extra_objs)
6562 AC_SUBST(extra_programs)
6563 AC_SUBST(float_h_file)
6564 AC_SUBST(gcc_config_arguments)
6565 AC_SUBST(gcc_gxx_include_dir)
6566 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6567 AC_SUBST(host_exeext)
6568 AC_SUBST(host_xm_file_list)
6569 AC_SUBST(host_xm_include_list)
6570 AC_SUBST(host_xm_defines)
6571 AC_SUBST(out_host_hook_obj)
6573 AC_SUBST(lang_opt_files)
6574 AC_SUBST(lang_specs_files)
6575 AC_SUBST(lang_tree_files)
6576 AC_SUBST(local_prefix)
6578 AC_SUBST(objc_boehm_gc)
6580 AC_SUBST(out_object_file)
6581 AC_SUBST(common_out_file)
6582 AC_SUBST(common_out_object_file)
6583 AC_SUBST(tm_file_list)
6584 AC_SUBST(tm_include_list)
6585 AC_SUBST(tm_defines)
6586 AC_SUBST(tm_p_file_list)
6587 AC_SUBST(tm_p_include_list)
6588 AC_SUBST(tm_d_file_list)
6589 AC_SUBST(tm_d_include_list)
6590 AC_SUBST(xm_file_list)
6591 AC_SUBST(xm_include_list)
6592 AC_SUBST(xm_defines)
6593 AC_SUBST(use_gcc_stdint)
6594 AC_SUBST(c_target_objs)
6595 AC_SUBST(cxx_target_objs)
6596 AC_SUBST(fortran_target_objs)
6597 AC_SUBST(d_target_objs)
6598 AC_SUBST(target_cpu_default)
6600 AC_SUBST_FILE(language_hooks)
6603 if test x${build} = x${host} ; then
6604 if test x${host} = x${target} ; then
6605 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6607 echo "Links are now set up to build a cross-compiler" 1>&2
6608 echo " from ${host} to ${target}." 1>&2
6611 if test x${host} = x${target} ; then
6612 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6613 echo " for ${target}." 1>&2
6615 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6616 echo " from ${host} to ${target}." 1>&2
6620 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6621 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6623 AC_ARG_VAR(ISLLIBS,[How to link isl])
6624 AC_ARG_VAR(ISLINC,[How to find isl include files])
6625 if test "x${ISLLIBS}" != "x" ; then
6626 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6630 AC_SUBST(pluginlibs)
6631 AC_SUBST(enable_plugin)
6632 if test x"$enable_plugin" = x"yes"; then
6633 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6637 # Enable --enable-host-shared
6638 AC_ARG_ENABLE(host-shared,
6639 [AS_HELP_STRING([--enable-host-shared],
6640 [build host code as shared libraries])],
6641 [PICFLAG=-fPIC], [PICFLAG=])
6642 AC_SUBST(enable_host_shared)
6646 AC_ARG_ENABLE(libquadmath-support,
6647 [AS_HELP_STRING([--disable-libquadmath-support],
6648 [disable libquadmath support for Fortran])],
6649 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6650 ENABLE_LIBQUADMATH_SUPPORT=yes)
6651 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6652 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6653 [Define to 1 to enable libquadmath support])
6657 # Specify what hash style to use by default.
6658 AC_ARG_WITH([linker-hash-style],
6659 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6660 [specify the linker hash style])],
6661 [case x"$withval" in
6663 LINKER_HASH_STYLE=sysv
6666 LINKER_HASH_STYLE=gnu
6669 LINKER_HASH_STYLE=both
6672 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6675 [LINKER_HASH_STYLE=''])
6676 if test x"${LINKER_HASH_STYLE}" != x; then
6677 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6678 [The linker hash style])
6681 # Specify what should be the default of -fdiagnostics-color option.
6682 AC_ARG_WITH([diagnostics-color],
6683 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6684 [specify the default of -fdiagnostics-color option
6685 auto-if-env stands for -fdiagnostics-color=auto if
6686 GCC_COLOR environment variable is present and
6687 -fdiagnostics-color=never otherwise])],
6688 [case x"$withval" in
6690 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6693 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6696 DIAGNOSTICS_COLOR_DEFAULT=-1
6699 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6702 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6705 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6706 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6707 [The default for -fdiagnostics-color option])
6709 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6710 # of jit/jit-playback.c.
6711 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6712 echo "gcc_driver_version: ${gcc_driver_version}"
6713 cat > gcc-driver-name.h <<EOF
6714 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6717 # Check whether --enable-default-pie was given.
6718 AC_ARG_ENABLE(default-pie,
6719 [AS_HELP_STRING([--enable-default-pie],
6720 [enable Position Independent Executable as default])],
6721 enable_default_pie=$enableval,
6722 enable_default_pie=no)
6723 if test x$enable_default_pie = xyes ; then
6724 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6725 [Define if your target supports default PIE and it is enabled.])
6727 AC_SUBST([enable_default_pie])
6729 # Check if -fno-PIE works.
6730 AC_CACHE_CHECK([for -fno-PIE option],
6732 [saved_CXXFLAGS="$CXXFLAGS"
6733 CXXFLAGS="$CXXFLAGS -fno-PIE"
6734 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6735 [gcc_cv_c_no_fpie=yes],
6736 [gcc_cv_c_no_fpie=no])
6737 CXXFLAGS="$saved_CXXFLAGS"])
6738 if test "$gcc_cv_c_no_fpie" = "yes"; then
6739 NO_PIE_CFLAGS="-fno-PIE"
6741 AC_SUBST([NO_PIE_CFLAGS])
6743 # Check if -no-pie works.
6744 AC_CACHE_CHECK([for -no-pie option],
6746 [saved_LDFLAGS="$LDFLAGS"
6747 LDFLAGS="$LDFLAGS -no-pie"
6748 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6749 [gcc_cv_no_pie=yes],
6751 LDFLAGS="$saved_LDFLAGS"])
6752 if test "$gcc_cv_no_pie" = "yes"; then
6753 NO_PIE_FLAG="-no-pie"
6755 AC_SUBST([NO_PIE_FLAG])
6757 # Check linker supports '-z bndplt'
6758 ld_bndplt_support=no
6759 AC_MSG_CHECKING(linker -z bndplt option)
6760 if test x"$ld_is_gold" = xno; then
6761 if test $in_tree_ld = yes ; then
6762 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6763 ld_bndplt_support=yes
6765 elif test x$gcc_cv_ld != x; then
6766 # Check if linker supports -a bndplt option
6767 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6768 ld_bndplt_support=yes
6772 if test x"$ld_bndplt_support" = xyes; then
6773 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6774 [Define if your linker supports -z bndplt])
6776 AC_MSG_RESULT($ld_bndplt_support)
6778 # Check linker supports '--push-state'/'--pop-state'
6779 ld_pushpopstate_support=no
6780 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6781 if test x"$ld_is_gold" = xno; then
6782 if test $in_tree_ld = yes ; then
6783 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6784 ld_pushpopstate_support=yes
6786 elif test x$gcc_cv_ld != x; then
6787 # Check if linker supports --push-state/--pop-state options
6788 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6789 ld_pushpopstate_support=yes
6793 if test x"$ld_pushpopstate_support" = xyes; then
6794 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6795 [Define if your linker supports --push-state/--pop-state])
6797 AC_MSG_RESULT($ld_pushpopstate_support)
6799 # Configure the subdirectories
6800 # AC_CONFIG_SUBDIRS($subdirs)
6802 # Create the Makefile
6803 # and configure language subdirectories
6804 AC_CONFIG_FILES($all_outputs)
6806 AC_CONFIG_COMMANDS([default],
6808 case ${CONFIG_HEADERS} in
6809 *auto-host.h:config.in*)
6812 # Make sure all the subdirs exist.
6813 for d in $subdirs doc build common c-family
6815 test -d $d || mkdir $d
6818 [subdirs='$subdirs'])