2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2020 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 "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
379 # Determine PICFLAG for target gnatlib.
380 GCC_PICFLAG_FOR_TARGET
381 AC_SUBST(PICFLAG_FOR_TARGET)
383 # -------------------------
384 # Check C compiler features
385 # -------------------------
387 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
453 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual -Wno-error=format-diag $wf_opt])),
489 ACX_PROG_CC_WARNING_OPTS(
490 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
491 [-Wno-error=format-diag])), [c_loose_warn])
492 ACX_PROG_CXX_WARNING_OPTS(
493 m4_quote(m4_do([-Wmissing-format-attribute ],
494 [-Woverloaded-virtual])), [strict_warn])
495 ACX_PROG_CC_WARNING_OPTS(
496 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
497 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
498 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
499 [-Wno-overlength-strings])), [strict_warn])
500 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
502 # The above macros do nothing if the compiler is not GCC. However, the
503 # Makefile has more goo to add other flags, so these variables are used
504 # to enable warnings only for GCC.
507 if test "x$GCC" = "xyes"; then
508 warn_cflags='$(GCC_WARN_CFLAGS)'
509 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
511 AC_SUBST(warn_cflags)
512 AC_SUBST(warn_cxxflags)
514 # Disable exceptions and RTTI if building with g++
515 ACX_PROG_CC_WARNING_OPTS(
516 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
519 # Enable expensive internal checks
521 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
525 AC_ARG_ENABLE(checking,
526 [AS_HELP_STRING([[--enable-checking[=LIST]]],
527 [enable expensive run-time checks. With LIST,
528 enable only specific categories of checks.
529 Categories are: yes,no,all,none,release.
530 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
531 rtlflag,rtl,runtime,tree,valgrind,types])],
532 [ac_checking_flags="${enableval}"],[
533 # Determine the default checks.
534 if test x$is_release = x ; then
535 ac_checking_flags=yes,extra
537 ac_checking_flags=release
539 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
540 for check in release $ac_checking_flags
543 # these set all the flags to specific states
544 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
545 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
546 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
547 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
548 ac_tree_checking=1 ; ac_valgrind_checking= ;
549 ac_types_checking=1 ;;
550 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
551 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
552 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
553 ac_rtlflag_checking= ; ac_runtime_checking= ;
554 ac_tree_checking= ; ac_valgrind_checking= ;
555 ac_types_checking= ;;
556 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
557 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
558 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
559 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
560 ac_tree_checking=1 ; ac_valgrind_checking= ;
561 ac_types_checking=1 ;;
562 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
563 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
564 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
565 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
566 ac_tree_checking= ; ac_valgrind_checking= ;
567 ac_types_checking= ;;
568 # these enable particular checks
569 assert) ac_assert_checking=1 ;;
570 df) ac_df_checking=1 ;;
571 extra) ac_extra_checking=1 ;;
572 fold) ac_fold_checking=1 ;;
573 gc) ac_gc_checking=1 ;;
574 gcac) ac_gc_always_collect=1 ;;
575 gimple) ac_gimple_checking=1 ;;
576 misc) ac_checking=1 ;;
577 rtl) ac_rtl_checking=1 ;;
578 rtlflag) ac_rtlflag_checking=1 ;;
579 runtime) ac_runtime_checking=1 ;;
580 tree) ac_tree_checking=1 ;;
581 types) ac_types_checking=1 ;;
582 valgrind) ac_valgrind_checking=1 ;;
583 *) AC_MSG_ERROR(unknown check category $check) ;;
589 if test x$ac_checking != x ; then
590 AC_DEFINE(CHECKING_P, 1,
591 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
592 bag of miscellaneous but relatively cheap checks.])
593 nocommon_flag=-fno-common
595 AC_DEFINE(CHECKING_P, 0)
597 AC_SUBST(nocommon_flag)
598 if test x$ac_extra_checking != x ; then
599 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
600 [Define to 0/1 if you want extra run-time checking that might affect code
603 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
605 if test x$ac_df_checking != x ; then
606 AC_DEFINE(ENABLE_DF_CHECKING, 1,
607 [Define if you want more run-time sanity checks for dataflow.])
609 if test x$ac_assert_checking != x ; then
610 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
611 [Define if you want assertions enabled. This is a cheap check.])
613 if test x$ac_gimple_checking != x ; then
614 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
615 [Define if you want operations on GIMPLE (the basic data structure of
616 the high-level optimizers) to be checked for dynamic type safety at
617 runtime. This is moderately expensive.])
619 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
620 if test x$ac_runtime_checking != x ; then
621 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
622 [Define if you want runtime assertions enabled. This is a cheap check.])
624 if test x$ac_tree_checking != x ; then
625 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
626 [Define if you want all operations on trees (the basic data
627 structure of the front ends) to be checked for dynamic type safety
628 at runtime. This is moderately expensive.
632 if test x$ac_types_checking != x ; then
633 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
634 [Define if you want all gimple types to be verified after gimplifiation.
638 AC_SUBST(TREECHECKING)
639 if test x$ac_rtl_checking != x ; then
640 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
641 [Define if you want all operations on RTL (the basic data structure
642 of the optimizer and back end) to be checked for dynamic type safety
643 at runtime. This is quite expensive.])
645 if test x$ac_rtlflag_checking != x ; then
646 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
647 [Define if you want RTL flag accesses to be checked against the RTL
648 codes that are supported for each access macro. This is relatively
651 if test x$ac_gc_checking != x ; then
652 AC_DEFINE(ENABLE_GC_CHECKING, 1,
653 [Define if you want the garbage collector to do object poisoning and
654 other memory allocation checks. This is quite expensive.])
656 if test x$ac_gc_always_collect != x ; then
657 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
658 [Define if you want the garbage collector to operate in maximally
659 paranoid mode, validating the entire heap and collecting garbage at
660 every opportunity. This is extremely expensive.])
662 if test x$ac_fold_checking != x ; then
663 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
664 [Define if you want fold checked that it never destructs its argument.
665 This is quite expensive.])
667 valgrind_path_defines=
670 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
671 dnl # an if statement. This was the source of very frustrating bugs
672 dnl # in converting to autoconf 2.5x!
673 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
675 # It is certainly possible that there's valgrind but no valgrind.h.
676 # GCC relies on making annotations so we must have both.
677 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
678 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
679 [[#include <valgrind/memcheck.h>
680 #ifndef VALGRIND_DISCARD
681 #error VALGRIND_DISCARD not defined
683 [gcc_cv_header_valgrind_memcheck_h=yes],
684 [gcc_cv_header_valgrind_memcheck_h=no])
685 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
686 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
687 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
688 [[#include <memcheck.h>
689 #ifndef VALGRIND_DISCARD
690 #error VALGRIND_DISCARD not defined
692 [gcc_cv_header_memcheck_h=yes],
693 [gcc_cv_header_memcheck_h=no])
694 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
695 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
696 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
697 [Define if valgrind's valgrind/memcheck.h header is installed.])
699 if test $gcc_cv_header_memcheck_h = yes; then
700 AC_DEFINE(HAVE_MEMCHECK_H, 1,
701 [Define if valgrind's memcheck.h header is installed.])
704 if test x$ac_valgrind_checking != x ; then
705 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
706 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
707 if test "x$valgrind_path" = "x" \
708 || (test $have_valgrind_h = no \
709 && test $gcc_cv_header_memcheck_h = no \
710 && test $gcc_cv_header_valgrind_memcheck_h = no); then
711 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
713 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
714 valgrind_command="$valgrind_path -q"
715 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
716 [Define if you want to run subprograms and generated programs
717 through valgrind (a memory checker). This is extremely expensive.])
719 AC_SUBST(valgrind_path_defines)
720 AC_SUBST(valgrind_command)
722 # Enable code coverage collection
723 AC_ARG_ENABLE(coverage,
724 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
725 [enable compiler's code coverage collection.
726 Use to measure compiler performance and locate
727 unused parts of the compiler. With LEVEL, specify
728 optimization. Values are opt, noopt,
730 [case "${enableval}" in
732 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
735 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
738 # a.k.a. --disable-coverage
742 AC_MSG_ERROR(unknown coverage setting $enableval)
746 AC_SUBST(coverage_flags)
748 AC_ARG_ENABLE(gather-detailed-mem-stats,
749 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
750 [enable detailed memory allocation stats gathering])], [],
751 [enable_gather_detailed_mem_stats=no])
752 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
753 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
754 [Define to enable detailed memory allocation stats gathering.])
756 AC_ARG_ENABLE(valgrind-annotations,
757 [AS_HELP_STRING([--enable-valgrind-annotations],
758 [enable valgrind runtime interaction])], [],
759 [enable_valgrind_annotations=no])
760 if test x$enable_valgrind_annotations != xno \
761 || test x$ac_valgrind_checking != x; then
762 if (test $have_valgrind_h = no \
763 && test $gcc_cv_header_memcheck_h = no \
764 && test $gcc_cv_header_valgrind_memcheck_h = no); then
765 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
767 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
768 [Define to get calls to the valgrind runtime enabled.])
771 # -------------------------------
772 # Miscenalleous configure options
773 # -------------------------------
777 [AS_HELP_STRING([--with-stabs],
778 [arrange to use stabs instead of host debug format])],
782 # Determine whether or not multilibs are enabled.
783 AC_ARG_ENABLE(multilib,
784 [AS_HELP_STRING([--enable-multilib],
785 [enable library support for multiple ABIs])],
786 [], [enable_multilib=yes])
787 AC_SUBST(enable_multilib)
789 # Determine whether or not multiarch is enabled.
790 AC_ARG_ENABLE(multiarch,
791 [AS_HELP_STRING([--enable-multiarch],
792 [enable support for multiarch paths])],
793 [case "${enableval}" in
794 yes|no|auto) enable_multiarch=$enableval;;
795 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
796 esac], [enable_multiarch=auto])
797 if test x${enable_multiarch} = xauto; then
798 if test x${with_native_system_header_dir} != x; then
799 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
802 if test x$host != x$target && test "x$with_sysroot" = x; then
803 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
807 AC_MSG_CHECKING(for multiarch configuration)
808 AC_SUBST(enable_multiarch)
809 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
811 # needed for setting the multiarch name for soft-float/hard-float ABIs
815 # default stack clash protection guard size as power of twos in bytes.
816 # Please keep these in sync with params.def.
820 # Keep the default value when the option is not used to 0, this allows us to
821 # distinguish between the cases where the user specifially set a value via
822 # configure and when the normal default value is used.
823 AC_ARG_WITH(stack-clash-protection-guard-size,
824 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
825 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
826 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
827 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
828 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
829 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
830 AC_MSG_ERROR(m4_normalize([
831 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
832 Must be between $stk_clash_min and $stk_clash_max.]))
835 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
836 [Define to larger than zero set the default stack clash protector size.])
838 # Enable __cxa_atexit for C++.
839 AC_ARG_ENABLE(__cxa_atexit,
840 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
843 # Enable C extension for decimal float if target supports it.
844 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
846 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
847 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
848 [Define to 1 to enable decimal float extension to C.])
850 # Use default_decimal_float for dependency.
851 enable_decimal_float=$default_decimal_float
853 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
854 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
855 [Define to 1 to specify that we are using the BID decimal floating
856 point format instead of DPD])
858 # Enable C extension for fixed-point arithmetic.
859 AC_ARG_ENABLE(fixed-point,
860 [AS_HELP_STRING([--enable-fixed-point],
861 [enable fixed-point arithmetic extension to C])],
866 enable_fixed_point=yes
870 enable_fixed_point=yes
873 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
874 enable_fixed_point=no
878 AC_SUBST(enable_fixed_point)
880 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
881 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
882 [Define to 1 to enable fixed-point arithmetic extension to C.])
885 # Pass with no value to take the default
886 # Pass with a value to specify a thread package
887 AC_ARG_ENABLE(threads,
888 [AS_HELP_STRING([[--enable-threads[=LIB]]],
889 [enable thread usage for target GCC,
890 using LIB thread package])],,
894 [AS_HELP_STRING([--enable-tls],
895 [enable or disable generation of tls code
896 overriding the assembler check for tls support])],
900 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
901 Valid choices are 'yes' and 'no'.]) ;;
905 AC_ARG_ENABLE(vtable-verify,
906 [AS_HELP_STRING([--enable-vtable-verify],
907 [enable vtable verification feature])],,
908 [enable_vtable_verify=no])
909 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
910 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
911 [Define 0/1 if vtable verification feature is enabled.])
913 AC_ARG_ENABLE(analyzer,
914 [AS_HELP_STRING([--disable-analyzer],
915 [disable -fanalyzer static analyzer])],
916 if test x$enable_analyzer = xno; then
922 AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer,
923 [Define 0/1 if static analyzer feature is enabled.])
925 AC_ARG_ENABLE(objc-gc,
926 [AS_HELP_STRING([--enable-objc-gc],
927 [enable the use of Boehm's garbage collector with
928 the GNU Objective-C runtime])],
929 if test x$enable_objc_gc = xno; then
937 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
938 dwarf2="$with_dwarf2",
941 AC_ARG_ENABLE(shared,
942 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
944 case $enable_shared in
948 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
949 for pkg in $enableval; do
950 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
957 ], [enable_shared=yes])
958 AC_SUBST(enable_shared)
961 [ --disable-gcov don't provide libgcov and related host tools],
962 [], [enable_gcov=yes])
963 AC_SUBST(enable_gcov)
966 [AS_HELP_STRING([--with-specs=SPECS],
967 [add SPECS to driver command-line processing])],
968 [CONFIGURE_SPECS=$withval],
971 AC_SUBST(CONFIGURE_SPECS)
973 ACX_PKGVERSION([GCC])
974 ACX_BUGURL([https://gcc.gnu.org/bugs/])
976 # Allow overriding the default URL for documentation
977 AC_ARG_WITH(documentation-root-url,
978 AS_HELP_STRING([--with-documentation-root-url=URL],
979 [Root for documentation URLs]),
981 yes) AC_MSG_ERROR([documentation root URL not specified]) ;;
982 no) AC_MSG_ERROR([documentation root URL not specified]) ;;
983 */) DOCUMENTATION_ROOT_URL="$withval" ;;
984 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;;
986 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/"
988 AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL",
989 [Define to the root for documentation URLs.])
991 # Allow overriding the default URL for GCC changes
992 AC_ARG_WITH(changes-root-url,
993 AS_HELP_STRING([--with-changes-root-url=URL],
994 [Root for GCC changes URLs]),
996 yes) AC_MSG_ERROR([changes root URL not specified]) ;;
997 no) AC_MSG_ERROR([changes root URL not specified]) ;;
998 */) CHANGES_ROOT_URL="$withval" ;;
999 *) AC_MSG_ERROR([changes root URL does not end with /]) ;;
1001 CHANGES_ROOT_URL="https://gcc.gnu.org/"
1003 AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL",
1004 [Define to the root for URLs about GCC changes.])
1006 # Sanity check enable_languages in case someone does not run the toplevel
1007 # configure # script.
1008 AC_ARG_ENABLE(languages,
1009 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
1010 [case ,${enable_languages}, in
1012 # go safe -- we cannot be much sure without the toplevel
1014 # analysis of which target libs are present and usable
1018 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1023 enable_languages=c,${enable_languages}
1026 [enable_languages=c])
1028 # If top-level libada has been disabled, then wire in install-gnatlib
1029 # invocation with `make install', so that one can build and install
1030 # the library manually with `make -C gcc all gnatlib gnattools install'.
1031 if test x"$enable_libada" = xno; then
1032 gnat_install_lib=gnat-install-lib
1036 AC_SUBST(gnat_install_lib)
1038 if test x"$enable_as_accelerator_for" != x; then
1039 AC_DEFINE(ACCEL_COMPILER, 1,
1040 [Define if this compiler should be built as the offload target compiler.])
1041 enable_as_accelerator=yes
1044 # In this case we expect offload compiler to be built as native, so we
1045 # need to rename the driver to avoid clashes with host's drivers.
1046 program_transform_name="s&^&${target}-&" ;;
1048 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
1049 program_transform_name=`echo $program_transform_name | sed $sedscript`
1050 accel_dir_suffix=/accel/${target_noncanonical}
1051 real_target_noncanonical=${enable_as_accelerator_for}
1053 AC_SUBST(enable_as_accelerator)
1054 AC_SUBST(real_target_noncanonical)
1055 AC_SUBST(accel_dir_suffix)
1057 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1058 tgt=`echo $tgt | sed 's/=.*//'`
1062 *-intelmic-* | *-intelmicemul-*)
1063 omp_device_property=omp-device-properties-i386
1064 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device"
1067 omp_device_property=omp-device-properties-gcn
1068 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device"
1071 omp_device_property=omp-device-properties-nvptx
1072 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device"
1075 AC_MSG_ERROR([unknown offload target specified])
1078 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}"
1079 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}"
1081 if test x"$offload_targets" = x; then
1082 offload_targets=$tgt
1084 offload_targets="$offload_targets,$tgt"
1087 AC_SUBST(omp_device_properties)
1088 AC_SUBST(omp_device_property_deps)
1090 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1091 [Define to offload targets, separated by commas.])
1092 if test x"$enable_offloading" != x; then
1093 AC_DEFINE(ENABLE_OFFLOADING, 1,
1094 [Define this to enable support for offloading.])
1096 AC_DEFINE(ENABLE_OFFLOADING, 0,
1097 [Define this to enable support for offloading.])
1100 AC_ARG_WITH(multilib-list,
1101 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1103 with_multilib_list=default)
1105 AC_ARG_WITH(multilib-generator,
1106 [AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])],
1108 with_multilib_generator=default)
1110 # -------------------------
1111 # Checks for other programs
1112 # -------------------------
1116 # Find some useful tools
1118 # We need awk to create options.c and options.h.
1119 # Bail out if it's missing.
1121 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1128 AC_SUBST(ranlib_flags)
1132 # See if cmp has --ignore-initial.
1133 gcc_AC_PROG_CMP_IGNORE_INITIAL
1135 # See if we have the mktemp command.
1136 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1138 # See if makeinfo has been installed and is modern enough
1139 # that we can use it.
1140 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1141 [GNU texinfo.* \([0-9][0-9.]*\)],
1142 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1143 if test $gcc_cv_prog_makeinfo_modern = no; then
1145 *** Makeinfo is missing or too old.
1146 *** Info documentation will not be built.])
1151 AC_SUBST(BUILD_INFO)
1153 # Is pod2man recent enough to regenerate manpages?
1154 AC_MSG_CHECKING([for recent Pod::Man])
1155 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1157 GENERATED_MANPAGES=generated-manpages
1162 AC_SUBST(GENERATED_MANPAGES)
1164 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1167 dnl Don't use AC_PROG_LEX; we insist on flex.
1168 dnl LEXLIB is not useful in gcc.
1169 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1172 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1174 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1175 # check for build == host before using them.
1178 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1179 && test -d ../binutils ; then
1180 NM='${objdir}/../binutils/nm-new'
1182 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1186 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1187 && test -d ../binutils ; then
1188 AR='${objdir}/../binutils/ar'
1190 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1193 # The jit documentation looks better if built with sphinx, but can be
1194 # built with texinfo if sphinx is not available.
1195 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1196 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1198 # --------------------
1199 # Checks for C headers
1200 # --------------------
1202 # Need to reject headers which give warnings, so that the -Werror bootstrap
1203 # works later. *sigh* This needs to come before all header checks.
1210 AC_HEADER_TIOCGWINSZ
1211 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1212 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1213 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1214 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1216 # Check for thread headers.
1217 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1218 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1220 # These tests can't be done till we know if we have limits.h.
1224 # ----------------------
1225 # Checks for C++ headers
1226 # ----------------------
1228 dnl Autoconf will give an error in the configure script if there is no
1229 dnl C++ preprocessor. Hack to prevent that.
1230 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1232 m4_popdef([AC_MSG_ERROR])[]dnl
1234 AC_CHECK_HEADERS(unordered_map)
1235 AC_CHECK_HEADERS(tr1/unordered_map)
1236 AC_CHECK_HEADERS(ext/hash_map)
1239 # Dependency checking.
1243 AC_CONFIG_COMMANDS([gccdepdir],[
1244 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1245 for lang in $subdirs c-family common analyzer
1247 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1248 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1250 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1257 # These libraries may be used by collect2.
1258 # We may need a special search path to get them linked.
1259 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1261 for libs in '' -lld -lmld \
1262 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1263 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1266 AC_TRY_LINK_FUNC(ldopen,
1267 [gcc_cv_collect2_libs="$libs"; break])
1270 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1271 case $gcc_cv_collect2_libs in
1273 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1275 AC_SUBST(COLLECT2_LIBS)
1277 # When building Ada code on Alpha, we need exc_resume which is usually in
1278 # -lexc. So test for it.
1281 AC_SEARCH_LIBS(exc_resume, exc)
1284 AC_SUBST(GNAT_LIBEXC)
1286 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1289 AC_SEARCH_LIBS(kstat_open, kstat)
1290 EXTRA_GCC_LIBS="$LIBS"
1292 AC_SUBST(EXTRA_GCC_LIBS)
1294 # Some systems put ldexp and frexp in libm instead of libc; assume
1295 # they're both in the same place. jcf-dump needs them.
1298 AC_SEARCH_LIBS(ldexp, m)
1303 # Some systems need dlopen
1306 AC_SEARCH_LIBS(dlopen, dl)
1311 # Use <inttypes.h> only if it exists,
1312 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1314 AC_MSG_CHECKING(for inttypes.h)
1315 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1316 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1317 [[#define __STDC_FORMAT_MACROS
1318 #include <sys/types.h>
1319 #include <inttypes.h>]],
1324 [gcc_cv_header_inttypes_h=yes],
1325 [gcc_cv_header_inttypes_h=no])])
1326 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1327 if test $gcc_cv_header_inttypes_h = yes; then
1328 AC_DEFINE(HAVE_INTTYPES_H, 1,
1329 [Define if you have a working <inttypes.h> header file.])
1332 # Look for the ZSTD package.
1335 AC_SUBST(ZSTD_INCLUDE)
1339 AC_SUBST(ZSTD_CPPFLAGS)
1340 AC_SUBST(ZSTD_LDFLAGS)
1342 [AS_HELP_STRING([--with-zstd=PATH],
1343 [specify prefix directory for installed zstd library.
1344 Equivalent to --with-zstd-include=PATH/include
1345 plus --with-zstd-lib=PATH/lib])])
1346 AC_ARG_WITH(zstd-include,
1347 [AS_HELP_STRING([--with-zstd-include=PATH],
1348 [specify directory for installed zstd include files])])
1349 AC_ARG_WITH(zstd-lib,
1350 [AS_HELP_STRING([--with-zstd-lib=PATH],
1351 [specify directory for the installed zstd library])])
1352 case "x$with_zstd" in
1358 *) ZSTD_INCLUDE=$with_zstd/include
1359 ZSTD_LIB=$with_zstd/lib
1363 if test "x$with_zstd" != xno; then
1364 if test "x$with_zstd_include" != x; then
1365 ZSTD_INCLUDE=$with_zstd_include
1367 if test "x$with_zstd_lib" != x; then
1368 ZSTD_LIB=$with_zstd_lib
1370 if test "x$ZSTD_INCLUDE" != x \
1371 && test "x$ZSTD_INCLUDE" != xno; then
1372 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1374 if test "x$ZSTD_LIB" != x \
1375 && test "x$ZSTD_LIB" != xno; then
1376 ZSTD_LDFLAGS=-L$ZSTD_LIB
1379 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1380 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1382 AC_MSG_CHECKING(for zstd.h)
1383 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1384 # We require version 1.3.0 or later. This is the first version that has
1385 # ZSTD_getFrameContentSize.
1386 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1388 #if ZSTD_VERSION_NUMBER < 10300
1389 #error "need zstd 1.3.0 or better"
1391 [gcc_cv_header_zstd_h=yes],
1392 [gcc_cv_header_zstd_h=no])])
1393 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1394 if test $gcc_cv_header_zstd_h = yes; then
1395 AC_DEFINE(HAVE_ZSTD_H, 1,
1396 [Define if you have a working <zstd.h> header file.])
1397 elif test "x$with_zstd" != x; then
1398 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1401 # LTO can use zstd compression algorithm
1404 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1410 dnl Disabled until we have a complete test for buggy enum bitfields.
1411 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1413 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1414 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1415 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1416 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1417 putchar_unlocked putc_unlocked)
1418 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1419 popen sysconf strsignal getrusage nl_langinfo \
1420 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \
1421 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat)
1423 if test x$ac_cv_func_mbstowcs = xyes; then
1424 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1425 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1431 [gcc_cv_func_mbstowcs_works=yes],
1432 [gcc_cv_func_mbstowcs_works=no],
1433 [gcc_cv_func_mbstowcs_works=yes])])
1434 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1435 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1436 [Define this macro if mbstowcs does not crash when its
1437 first argument is NULL.])
1441 AC_CHECK_TYPE(ssize_t, int)
1442 AC_CHECK_TYPE(caddr_t, char *)
1443 AC_CHECK_TYPE(sighander_t,
1444 AC_DEFINE(HAVE_SIGHANDLER_T, 1,
1445 [Define if <sys/signal.h> defines sighandler_t]),
1448 GCC_AC_FUNC_MMAP_BLACKLIST
1452 # Under VMS, vfork works very differently than on Unix. The standard test
1453 # won't work, and it isn't easily adaptable. It makes more sense to
1455 ac_cv_func_vfork_works=yes
1462 # Until we have in-tree GNU iconv:
1464 if test -f "$LTLIBICONV"; then
1465 LIBICONV_DEP=$LTLIBICONV
1467 AC_SUBST(LIBICONV_DEP)
1473 # We will need to find libiberty.h and ansidecl.h
1474 saved_CFLAGS="$CFLAGS"
1475 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1476 saved_CXXFLAGS="$CXXFLAGS"
1477 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1479 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1480 # normal autoconf function for these. But force definition of
1481 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1482 # basename handling in libiberty.h.
1483 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1484 #undef HAVE_DECL_BASENAME
1485 #define HAVE_DECL_BASENAME 1
1486 #include "ansidecl.h"
1487 #include "system.h"])
1489 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1490 madvise stpcpy strnlen strsignal strverscmp \
1491 strtol strtoul strtoll strtoull setenv unsetenv \
1492 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1493 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1494 #include "ansidecl.h"
1495 #include "system.h"])
1497 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1498 #include "ansidecl.h"
1500 #ifdef HAVE_SYS_RESOURCE_H
1501 #include <sys/resource.h>
1505 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1506 #include "ansidecl.h"
1508 #ifdef HAVE_MALLOC_H
1513 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1514 #include "ansidecl.h"
1516 #ifdef HAVE_SYS_RESOURCE_H
1517 #include <sys/resource.h>
1519 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1520 [Define to `long' if <sys/resource.h> doesn't define.])])
1522 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1523 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1524 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1525 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1526 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1527 #include "ansidecl.h"
1536 gcc_AC_CHECK_DECLS(times, , ,[
1537 #include "ansidecl.h"
1539 #ifdef HAVE_SYS_TIMES_H
1540 #include <sys/times.h>
1544 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1545 #include "ansidecl.h"
1550 # More time-related stuff.
1551 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1552 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1553 #include "ansidecl.h"
1555 #ifdef HAVE_SYS_TIMES_H
1556 #include <sys/times.h>
1558 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1559 if test $ac_cv_struct_tms = yes; then
1560 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1561 [Define if <sys/times.h> defines struct tms.])
1564 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1565 # revisit after autoconf 2.50.
1566 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1567 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1568 #include "ansidecl.h"
1570 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1571 if test $gcc_cv_type_clock_t = yes; then
1572 AC_DEFINE(HAVE_CLOCK_T, 1,
1573 [Define if <time.h> defines clock_t.])
1576 # Check if F_SETLKW is supported by fcntl.
1577 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1578 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1579 #include <fcntl.h>]], [[
1585 return fcntl (1, F_SETLKW, &fl);]])],
1586 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1587 if test $ac_cv_f_setlkw = yes; then
1588 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1589 [Define if F_SETLKW supported by fcntl.])
1592 # Check if O_CLOEXEC is defined by fcntl
1593 AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
1594 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1595 #include <fcntl.h>]], [[
1596 return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
1597 [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
1598 if test $ac_cv_o_cloexec = yes; then
1599 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
1600 [Define if O_CLOEXEC supported by fcntl.])
1603 # C++ Modules would like some networking features to provide the mapping
1604 # server. You can still use modules without them though.
1605 # The following network-related checks could probably do with some
1606 # Windows and other non-linux defenses and checking.
1608 # Local socket connectivity wants AF_UNIX networking
1609 # Check for AF_UNIX networking
1610 AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
1611 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1612 #include <sys/types.h>
1613 #include <sys/socket.h>
1615 #include <netinet/in.h>]],[[
1617 un.sun_family = AF_UNSPEC;
1618 int fd = socket (AF_UNIX, SOCK_STREAM, 0);
1619 connect (fd, (sockaddr *)&un, sizeof (un));]])],
1620 [ac_cv_af_unix=yes],
1621 [ac_cv_af_unix=no])])
1622 if test $ac_cv_af_unix = yes; then
1623 AC_DEFINE(HAVE_AF_UNIX, 1,
1624 [Define if AF_UNIX supported.])
1627 # Remote socket connectivity wants AF_INET6 networking
1628 # Check for AF_INET6 networking
1629 AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
1630 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1631 #include <sys/types.h>
1632 #include <sys/socket.h>
1633 #include <netinet/in.h>
1634 #include <netdb.h>]],[[
1636 in6.sin6_family = AF_UNSPEC;
1637 struct addrinfo *addrs = 0;
1638 struct addrinfo hints;
1640 hints.ai_family = AF_INET6;
1641 hints.ai_socktype = SOCK_STREAM;
1642 hints.ai_protocol = 0;
1643 hints.ai_canonname = 0;
1646 int e = getaddrinfo ("localhost", 0, &hints, &addrs);
1647 const char *str = gai_strerror (e);
1648 freeaddrinfo (addrs);
1649 int fd = socket (AF_INET6, SOCK_STREAM, 0);
1650 connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
1651 [ac_cv_af_inet6=yes],
1652 [ac_cv_af_inet6=no])])
1653 if test $ac_cv_af_inet6 = yes; then
1654 AC_DEFINE(HAVE_AF_INET6, 1,
1655 [Define if AF_INET6 supported.])
1658 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1659 CFLAGS="$saved_CFLAGS"
1660 CXXFLAGS="$saved_CXXFLAGS"
1662 # mkdir takes a single argument on some systems.
1663 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1671 # With Setjmp/Longjmp based exception handling.
1672 AC_ARG_ENABLE(sjlj-exceptions,
1673 [AS_HELP_STRING([--enable-sjlj-exceptions],
1674 [arrange to use setjmp/longjmp exception handling])],
1677 if test $enableval != yes; then
1678 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1683 force_sjlj_exceptions=yes],
1686 force_sjlj_exceptions=yes
1690 force_sjlj_exceptions=yes
1694 force_sjlj_exceptions=no
1697 if test $force_sjlj_exceptions = yes; then
1698 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1699 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1700 [Define 0/1 to force the choice for exception handling model.])
1703 # --------------------------------------------------------
1704 # Build, host, and target specific configuration fragments
1705 # --------------------------------------------------------
1707 # Collect build-machine-specific information.
1708 . ${srcdir}/config.build || exit 1
1710 # Collect host-machine-specific information.
1711 . ${srcdir}/config.host || exit 1
1715 # Collect target-machine-specific information.
1716 . ${srcdir}/config.gcc || exit 1
1718 extra_objs="${host_extra_objs} ${extra_objs}"
1719 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1721 # Default the target-machine variables that were not explicitly set.
1722 if test x"$tm_file" = x
1723 then tm_file=$cpu_type/$cpu_type.h; fi
1725 if test x"$extra_headers" = x
1726 then extra_headers=; fi
1728 if test x$md_file = x
1729 then md_file=$cpu_type/$cpu_type.md; fi
1731 if test x$out_file = x
1732 then out_file=$cpu_type/$cpu_type.c; fi
1734 if test x"$tmake_file" = x
1735 then tmake_file=$cpu_type/t-$cpu_type
1738 # Support --enable-initfini-array.
1739 if test x$enable_initfini_array != xno; then
1740 tm_file="${tm_file} initfini-array.h"
1743 if test x"$dwarf2" = xyes
1744 then tm_file="$tm_file tm-dwarf2.h"
1747 # Say what files are being used for the output code and MD file.
1748 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1749 echo "Using \`$srcdir/config/$md_file' as machine description file."
1751 # If any of the xm_file variables contain nonexistent files, warn
1752 # about them and drop them.
1755 for x in $build_xm_file; do
1756 if test -f $srcdir/config/$x
1758 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1764 for x in $host_xm_file; do
1765 if test -f $srcdir/config/$x
1767 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1773 for x in $xm_file; do
1774 if test -f $srcdir/config/$x
1776 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1782 for f in $tm_file; do
1785 if test $count = ax; then
1786 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1788 echo "Using the following target machine macro files:"
1789 for f in $tm_file; do
1790 echo " $srcdir/config/$f"
1794 if test x$use_long_long_for_widest_fast_int = xyes; then
1795 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1796 [Define to 1 if the 'long long' type is wider than 'long' but still
1797 efficiently supported by the host hardware.])
1800 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1801 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1803 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1804 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1807 for f in $host_xm_file; do
1810 if test $count = a; then
1812 elif test $count = ax; then
1813 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1815 echo "Using the following host machine macro files:"
1816 for f in $host_xm_file; do
1817 echo " $srcdir/config/$f"
1820 echo "Using ${out_host_hook_obj} for host machine hooks."
1822 if test "$host_xm_file" != "$build_xm_file"; then
1824 for f in $build_xm_file; do
1827 if test $count = a; then
1829 elif test $count = ax; then
1830 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1832 echo "Using the following build machine macro files:"
1833 for f in $build_xm_file; do
1834 echo " $srcdir/config/$f"
1839 if test -n "$configured_native_system_header_dir"; then
1840 native_system_header_dir=$configured_native_system_header_dir
1842 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1843 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1847 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1848 gcc_cv_mcontext_underscores,
1849 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1850 #include <sys/cdefs.h>
1851 #include <sys/signal.h>
1852 #include <ucontext.h>
1853 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1855 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1856 if test $gcc_cv_mcontext_underscores = yes; then
1857 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1858 [mcontext_t fields start with __])
1867 # Check if a valid thread package
1868 case ${enable_threads} in
1871 target_thread_file='single'
1875 target_thread_file='single'
1877 aix | dce | lynx | mipssde | posix | rtems | \
1878 single | tpf | vxworks | win32)
1879 target_thread_file=${enable_threads}
1882 echo "${enable_threads} is an unknown thread package" 1>&2
1887 if test x${thread_file} = x; then
1888 # No thread file set by target-specific clauses in config.gcc,
1889 # so use file chosen by default logic above
1890 thread_file=${target_thread_file}
1898 if test x$enable___cxa_atexit = xyes || \
1899 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1900 if test x$host = x$target; then
1902 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1903 # keyed to flag_use_cxa_atexit
1911 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1912 [echo "__cxa_atexit can't be enabled on this target"])
1916 # We can't check for __cxa_atexit when building a cross, so assume
1920 if test x$use_cxa_atexit = xyes; then
1921 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1922 [Define if you want to use __cxa_atexit, rather than atexit, to
1923 register C++ destructors for local statics and global objects.
1924 This is essential for fully standards-compliant handling of
1925 destructors, but requires __cxa_atexit in libc.])
1929 # Look for a file containing extra machine modes.
1930 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1931 extra_modes_file='$(srcdir)'/config/${extra_modes}
1932 AC_SUBST(extra_modes_file)
1933 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1934 [Define to the name of a file containing a list of extra machine modes
1935 for this architecture.])
1938 # Convert extra_options into a form suitable for Makefile use.
1941 for f in $extra_options; do
1942 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1943 all_opt_files="$all_opt_files $srcdir/config/$f"
1945 AC_SUBST(extra_opt_files)
1947 # auto-host.h is the file containing items generated by autoconf and is
1948 # the first file included by config.h.
1949 # If host=build, it is correct to have bconfig include auto-host.h
1950 # as well. If host!=build, we are in error and need to do more
1951 # work to find out the build config parameters.
1952 if test x$host = x$build
1954 build_auto=auto-host.h
1955 HAVE_AUTO_BUILD='# '
1957 # We create a subdir, then run autoconf in the subdir.
1958 # To prevent recursion we set host and build for the new
1959 # invocation of configure to the build for this invocation
1966 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1967 *) realsrcdir=../${srcdir};;
1969 # Clearing GMPINC is necessary to prevent host headers being
1970 # used by the build compiler. Defining GENERATOR_FILE stops
1971 # system.h from including gmp.h.
1972 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1973 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1974 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1975 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1976 ${realsrcdir}/configure \
1977 --enable-languages=${enable_languages-all} \
1978 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
1979 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
1980 --target=$target_alias --host=$build_alias \
1981 --build=$build_alias || exit # retaining $tempdir
1983 # We just finished tests for the build machine, so rename
1984 # the file auto-build.h in the gcc directory.
1985 mv auto-host.h ../auto-build.h
1988 build_auto=auto-build.h
1991 AC_SUBST(build_subdir)
1992 AC_SUBST(HAVE_AUTO_BUILD)
1994 tm_file="${tm_file} defaults.h"
1995 tm_p_file="${tm_p_file} tm-preds.h"
1996 tm_d_file="${tm_d_file} defaults.h"
1997 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1998 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1999 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
2000 # put this back in temporarily.
2001 xm_file="auto-host.h ansidecl.h ${xm_file}"
2008 # Compile in configure arguments.
2009 if test -f configargs.h ; then
2010 # Being re-configured.
2011 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
2012 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
2013 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
2014 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
2017 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
2020 # Double all backslashes and backslash all quotes to turn
2021 # gcc_config_arguments into a C string.
2022 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
2023 $gcc_config_arguments
2025 gcc_config_arguments_str=`cat conftest.out`
2028 cat > configargs.h <<EOF
2029 /* Generated automatically. */
2030 static const char configuration_arguments[] = "$gcc_config_arguments_str";
2031 static const char thread_model[] = "$thread_file";
2033 static const struct {
2034 const char *name, *value;
2035 } configure_default_options[] = $configure_default_options;
2040 gcc_BASEVER=`cat $srcdir/BASE-VER`
2041 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
2042 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
2043 if test -f $srcdir/REVISION ; then
2044 gcc_REVISION=`cat $srcdir/REVISION`
2048 cat > plugin-version.h <<EOF
2049 #include "configargs.h"
2051 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
2052 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
2053 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
2054 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
2056 static char basever[] = "$gcc_BASEVER";
2057 static char datestamp[] = "$gcc_DATESTAMP";
2058 static char devphase[] = "$gcc_DEVPHASE";
2059 static char revision[] = "$gcc_REVISION";
2061 /* FIXME plugins: We should make the version information more precise.
2062 One way to do is to add a checksum. */
2064 static struct plugin_gcc_version gcc_version = {basever, datestamp,
2066 configuration_arguments};
2070 # Determine what GCC version number to use in filesystem paths.
2073 # Internationalization
2074 ZW_GNU_GETTEXT_SISTER_DIR
2076 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2077 # -liconv on the link line twice.
2078 case "$LIBINTL" in *$LIBICONV*)
2082 AC_ARG_ENABLE(secureplt,
2083 [AS_HELP_STRING([--enable-secureplt],
2084 [enable -msecure-plt by default for PowerPC])],
2087 AC_ARG_ENABLE(mingw-wildcard,
2088 [AS_HELP_STRING([--enable-mingw-wildcard],
2089 [Set whether to expand wildcard on command-line.
2090 Default to platform configuration])],
2091 [],[enable_mingw_wildcard=platform])
2092 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2093 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2094 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2095 [Value to set mingw's _dowildcard to.])])
2097 AC_ARG_ENABLE(large-address-aware,
2098 [AS_HELP_STRING([--enable-large-address-aware],
2099 [Link mingw executables with --large-address-aware])])
2100 AS_IF([test x"$enable_large_address_aware" = xyes],
2101 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2102 [Define if we should link mingw executables with --large-address-aware])])
2104 AC_ARG_ENABLE(leading-mingw64-underscores,
2105 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2106 [enable leading underscores on 64 bit mingw targets]),
2108 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2109 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2110 [Define if we should use leading underscore on 64 bit mingw targets])])
2113 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2116 AC_ARG_ENABLE(frame-pointer,
2117 [AS_HELP_STRING([--enable-frame-pointer],
2118 [enable -fno-omit-frame-pointer by default for x86])], [],
2121 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2122 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2123 enable_frame_pointer=no
2126 enable_frame_pointer=yes
2132 i[[34567]]86-*-* | x86_64-*-*)
2133 if test "x$enable_cld" = xyes; then
2134 tm_defines="${tm_defines} USE_IX86_CLD=1"
2136 if test "x$enable_frame_pointer" = xyes; then
2137 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2142 # Windows32 Registry support for specifying GCC installation paths.
2143 AC_ARG_ENABLE(win32-registry,
2144 [AS_HELP_STRING([--disable-win32-registry],
2145 [disable lookup of installation paths in the
2146 Registry on Windows hosts])
2147 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2148 AS_HELP_STRING([--enable-win32-registry=KEY],
2149 [use KEY instead of GCC version as the last portion
2150 of the registry key])],,)
2153 win32 | pe | cygwin* | mingw32*)
2154 if test "x$enable_win32_registry" != xno; then
2155 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2158 if test "x$enable_win32_registry" != xno; then
2159 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2160 [Define to 1 if installation paths should be looked up in the Windows
2161 Registry. Ignored on non-Windows hosts.])
2163 if test "x$enable_win32_registry" != xyes \
2164 && test "x$enable_win32_registry" != x; then
2165 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2166 [Define to be the last component of the Windows registry key under which
2167 to look for installation paths. The full key used will be
2168 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2169 The default is the GCC version number.])
2175 # Get an absolute path to the GCC top-level source directory
2176 holddir=`${PWDCMD-pwd}`
2178 topdir=`${PWDCMD-pwd}`
2181 # Conditionalize the makefile for this host machine.
2183 for f in ${host_xmake_file}
2185 if test -f ${srcdir}/config/$f
2187 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2191 # Conditionalize the makefile for this target machine.
2193 for f in ${tmake_file}
2195 if test -f ${srcdir}/config/$f
2197 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2200 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2202 out_object_file=`basename $out_file .c`.o
2203 common_out_object_file=`basename $common_out_file .c`.o
2205 tm_file_list="options.h"
2206 tm_include_list="options.h insn-constants.h"
2207 for f in $tm_file; do
2210 f=`echo $f | sed 's/^..//'`
2211 tm_file_list="${tm_file_list} $f"
2212 tm_include_list="${tm_include_list} $f"
2215 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2216 tm_include_list="${tm_include_list} $f"
2219 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2220 tm_include_list="${tm_include_list} config/$f"
2227 for f in $tm_p_file; do
2230 tm_p_file_list="${tm_p_file_list} $f"
2231 tm_p_include_list="${tm_p_include_list} $f"
2234 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2235 tm_p_include_list="${tm_p_include_list} config/$f"
2240 tm_d_include_list="options.h insn-constants.h"
2241 for f in $tm_d_file; do
2244 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2245 tm_d_include_list="${tm_d_include_list} $f"
2248 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2249 tm_d_include_list="${tm_d_include_list} config/$f"
2256 for f in $xm_file; do
2259 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2260 xm_include_list="${xm_include_list} $f"
2263 xm_file_list="${xm_file_list} $f"
2264 xm_include_list="${xm_include_list} $f"
2267 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2268 xm_include_list="${xm_include_list} config/$f"
2274 host_xm_include_list=
2275 for f in $host_xm_file; do
2278 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2279 host_xm_include_list="${host_xm_include_list} $f"
2282 host_xm_file_list="${host_xm_file_list} $f"
2283 host_xm_include_list="${host_xm_include_list} $f"
2286 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2287 host_xm_include_list="${host_xm_include_list} config/$f"
2293 for f in $build_xm_file; do
2296 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2297 build_xm_include_list="${build_xm_include_list} $f"
2299 auto-build.h | auto-host.h )
2300 build_xm_file_list="${build_xm_file_list} $f"
2301 build_xm_include_list="${build_xm_include_list} $f"
2304 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2305 build_xm_include_list="${build_xm_include_list} config/$f"
2310 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2311 # cross-compiler which does not use the native headers and libraries.
2312 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2313 CROSS= AC_SUBST(CROSS)
2314 ALL=all.internal AC_SUBST(ALL)
2315 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2316 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2318 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2319 test x$build != x$host || test "x$with_build_sysroot" != x; then
2320 if test "x$with_build_sysroot" != x; then
2321 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2323 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2326 if test x$host != x$target
2328 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2330 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2331 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2332 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2335 if test "x$with_build_sysroot" != "x"; then
2336 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2337 elif test "x$with_sysroot" = x; then
2338 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2339 elif test "x$with_sysroot" = xyes; then
2340 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2342 target_header_dir="${with_sysroot}${native_system_header_dir}"
2345 target_header_dir=${native_system_header_dir}
2348 # If this is a cross-compiler that does not
2349 # have its own set of headers then define
2352 # If this is using newlib, without having the headers available now,
2353 # then define inhibit_libc in LIBGCC2_CFLAGS.
2354 # This prevents libgcc2 from containing any code which requires libc
2356 : ${inhibit_libc=false}
2357 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2358 test x$with_newlib = xyes ; } &&
2359 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2362 AC_SUBST(inhibit_libc)
2364 # When building gcc with a cross-compiler, we need to adjust things so
2365 # that the generator programs are still built with the native compiler.
2366 # Also, we cannot run fixincludes.
2368 # These are the normal (build=host) settings:
2369 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2370 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2371 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2372 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2373 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2374 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2376 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2377 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2379 # And these apply if build != host, or we are generating coverage data
2380 if test x$build != x$host || test "x$coverage_flags" != x
2382 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2383 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2384 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2386 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2387 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2388 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2389 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2391 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2392 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2394 # Expand extra_headers to include complete path.
2395 # This substitutes for lots of t-* files.
2397 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2398 for file in ${extra_headers} ; do
2399 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2402 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2403 if test x"$use_gcc_tgmath" = xyes
2404 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2407 # Define collect2 in Makefile.
2408 case $host_can_use_collect2 in
2410 *) collect2='collect2$(exeext)' ;;
2412 AC_SUBST([collect2])
2414 # Add a definition of USE_COLLECT2 if system wants one.
2415 case $use_collect2 in
2416 no) use_collect2= ;;
2419 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2420 xm_defines="${xm_defines} USE_COLLECT2"
2421 case $host_can_use_collect2 in
2423 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2429 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2430 [Define to the name of the LTO plugin DSO that must be
2431 passed to the linker's -plugin=LIB option.])
2433 # ---------------------------
2434 # Assembler & linker features
2435 # ---------------------------
2437 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2438 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2439 # However when ld-new is first executed from the build tree, libtool will
2440 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2441 # to the build tree. While doing this we need to use the previous-stage
2442 # linker, or we have an infinite loop. The presence of a shell script as
2443 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2444 # the gcc/collect-ld script. So we need to know how libtool works, or
2445 # exec-tool will fail.
2447 m4_defun([_LT_CONFIG_COMMANDS], [])
2450 AC_SUBST(enable_fast_install)
2452 # Identify the assembler which will work hand-in-glove with the newly
2453 # built GCC, so that we can examine its features. This is the assembler
2454 # which will be driven by the driver program.
2456 # If build != host, and we aren't building gas in-tree, we identify a
2457 # build->target assembler and hope that it will have the same features
2458 # as the host->target assembler we'll be using.
2459 gcc_cv_gas_major_version=
2460 gcc_cv_gas_minor_version=
2461 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2463 m4_pattern_allow([AS_FOR_TARGET])dnl
2464 AS_VAR_SET_IF(gcc_cv_as,, [
2465 if test -x "$DEFAULT_ASSEMBLER"; then
2466 gcc_cv_as="$DEFAULT_ASSEMBLER"
2467 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2468 && test -f ../gas/Makefile \
2469 && test x$build = x$host; then
2470 gcc_cv_as=../gas/as-new$build_exeext
2471 elif test -x as$build_exeext; then
2472 # Build using assembler in the current directory.
2473 gcc_cv_as=./as$build_exeext
2474 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2475 gcc_cv_as="$AS_FOR_TARGET"
2477 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2480 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2481 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2482 case "$ORIGINAL_AS_FOR_TARGET" in
2483 ./as | ./as$build_exeext) ;;
2484 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2487 AC_MSG_CHECKING(what assembler to use)
2488 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2489 # Single tree build which includes gas. We want to prefer it
2490 # over whatever linker top-level may have detected, since
2491 # we'll use what we're building after installation anyway.
2492 AC_MSG_RESULT(newly built gas)
2494 _gcc_COMPUTE_GAS_VERSION
2495 in_tree_gas_is_elf=no
2496 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2497 || (grep 'obj_format = multi' ../gas/Makefile \
2498 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2500 in_tree_gas_is_elf=yes
2503 AC_MSG_RESULT($gcc_cv_as)
2509 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2510 [case "${enableval}" in
2516 install_gold_as_default=no
2518 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2519 [case "${enableval}" in
2521 install_gold_as_default=yes
2524 if test x${default_ld} != x; then
2525 install_gold_as_default=yes
2531 AC_MSG_ERROR([invalid --enable-gold argument])
2535 # Identify the linker which will work hand-in-glove with the newly
2536 # built GCC, so that we can examine its features. This is the linker
2537 # which will be driven by the driver program.
2539 # If build != host, and we aren't building gas in-tree, we identify a
2540 # build->target linker and hope that it will have the same features
2541 # as the host->target linker we'll be using.
2542 gcc_cv_gld_major_version=
2543 gcc_cv_gld_minor_version=
2544 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2545 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2546 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2548 AS_VAR_SET_IF(gcc_cv_ld,, [
2549 if test -x "$DEFAULT_LINKER"; then
2550 gcc_cv_ld="$DEFAULT_LINKER"
2551 elif test $install_gold_as_default = yes \
2552 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2553 && test -f ../gold/Makefile \
2554 && test x$build = x$host; then
2555 gcc_cv_ld=../gold/ld-new$build_exeext
2556 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2557 && test -f ../ld/Makefile \
2558 && test x$build = x$host; then
2559 gcc_cv_ld=../ld/ld-new$build_exeext
2560 elif test -x collect-ld$build_exeext; then
2561 # Build using linker in the current directory.
2562 gcc_cv_ld=./collect-ld$build_exeext
2563 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2564 gcc_cv_ld="$LD_FOR_TARGET"
2566 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2569 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2570 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2571 # if the PLUGIN_LD is set ld-new, just have it as ld
2572 # as that is the installed named.
2573 if test x$PLUGIN_LD_SUFFIX = xld-new \
2574 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2577 AC_ARG_WITH(plugin-ld,
2578 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2579 [if test x"$withval" != x; then
2580 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2581 PLUGIN_LD_SUFFIX="$withval"
2583 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2584 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2586 # Check to see if we are using gold instead of ld
2587 AC_MSG_CHECKING(whether we are using gold)
2589 if test x$gcc_cv_ld != x; then
2590 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2591 | grep "GNU gold" > /dev/null; then
2595 AC_MSG_RESULT($ld_is_gold)
2597 AC_MSG_CHECKING(gold linker with split stack support as non default)
2598 # Check to see if default ld is not gold, but gold is
2599 # available and has support for split stack. If gcc was configured
2600 # with gold then no checking is done.
2602 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2604 # For platforms other than powerpc64*, enable as appropriate.
2607 ld_gold=`which ${gcc_cv_ld}.gold`
2608 # Make sure this gold has minimal split stack support
2609 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2610 ld_vers=`$ld_gold --version | sed 1q`
2611 gold_vers=`echo $ld_vers | sed -n \
2612 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2614 # check that the gold version contains the complete split stack support
2615 # on powerpc64 big and little endian
2617 case "$gold_vers" in
2618 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2620 *) gold_non_default=no
2626 if test $gold_non_default = yes; then
2627 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2628 [Define if the gold linker supports split stack and is available as a non-default])
2631 AC_MSG_RESULT($gold_non_default)
2633 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2634 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2635 case "$ORIGINAL_LD_FOR_TARGET" in
2636 ./collect-ld | ./collect-ld$build_exeext) ;;
2637 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2640 AC_MSG_CHECKING(what linker to use)
2641 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2642 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2643 # Single tree build which includes ld. We want to prefer it
2644 # over whatever linker top-level may have detected, since
2645 # we'll use what we're building after installation anyway.
2646 AC_MSG_RESULT(newly built ld)
2648 in_tree_ld_is_elf=no
2649 if (grep 'EMUL = .*elf' ../ld/Makefile \
2650 || grep 'EMUL = .*linux' ../ld/Makefile \
2651 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2652 in_tree_ld_is_elf=yes
2653 elif test "$ld_is_gold" = yes; then
2654 in_tree_ld_is_elf=yes
2656 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
2659 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2660 if test x$gcc_cv_gld_version != x; then
2664 case $gcc_cv_gld_version in
2667 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2670 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2671 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2673 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2674 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2676 AC_MSG_RESULT($gcc_cv_ld)
2678 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2679 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2680 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2683 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2684 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2686 # Figure out what nm we will be using.
2687 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2688 AS_VAR_SET_IF(gcc_cv_nm,, [
2689 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2690 && test -f ../binutils/Makefile \
2691 && test x$build = x$host; then
2692 gcc_cv_nm=../binutils/nm-new$build_exeext
2693 elif test -x nm$build_exeext; then
2694 gcc_cv_nm=./nm$build_exeext
2695 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2696 gcc_cv_nm="$NM_FOR_TARGET"
2698 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2701 AC_MSG_CHECKING(what nm to use)
2702 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2703 # Single tree build which includes binutils.
2704 AC_MSG_RESULT(newly built nm)
2707 AC_MSG_RESULT($gcc_cv_nm)
2711 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2712 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2713 case "$ORIGINAL_NM_FOR_TARGET" in
2714 ./nm | ./nm$build_exeext) ;;
2715 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2719 # Figure out what objdump we will be using.
2720 AS_VAR_SET_IF(gcc_cv_objdump,, [
2721 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2722 && test -f ../binutils/Makefile \
2723 && test x$build = x$host; then
2724 # Single tree build which includes binutils.
2725 gcc_cv_objdump=../binutils/objdump$build_exeext
2726 elif test -x objdump$build_exeext; then
2727 gcc_cv_objdump=./objdump$build_exeext
2728 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2729 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2731 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2734 AC_MSG_CHECKING(what objdump to use)
2735 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2736 # Single tree build which includes binutils.
2737 AC_MSG_RESULT(newly built objdump)
2738 elif test x$gcc_cv_objdump = x; then
2739 AC_MSG_RESULT(not found)
2741 AC_MSG_RESULT($gcc_cv_objdump)
2744 # Figure out what readelf we will be using.
2745 AS_VAR_SET_IF(gcc_cv_readelf,, [
2746 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2747 && test -f ../binutils/Makefile \
2748 && test x$build = x$host; then
2749 # Single tree build which includes binutils.
2750 gcc_cv_readelf=../binutils/readelf$build_exeext
2751 elif test -x readelf$build_exeext; then
2752 gcc_cv_readelf=./readelf$build_exeext
2753 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2754 gcc_cv_readelf="$READELF_FOR_TARGET"
2756 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2759 AC_MSG_CHECKING(what readelf to use)
2760 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2761 # Single tree build which includes binutils.
2762 AC_MSG_RESULT(newly built readelf)
2763 elif test x$gcc_cv_readelf = x; then
2764 AC_MSG_RESULT(not found)
2766 AC_MSG_RESULT($gcc_cv_readelf)
2769 # Figure out what otool we will be using.
2770 AS_VAR_SET_IF(gcc_cv_otool,, [
2771 if test -x otool$build_exeext; then
2772 gcc_cv_otool=./otool$build_exeext
2773 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2774 gcc_cv_otool="$OTOOL_FOR_TARGET"
2776 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2779 AC_MSG_CHECKING(what otool to use)
2780 if test x$gcc_cv_otool = x; then
2781 AC_MSG_RESULT(not found)
2783 AC_MSG_RESULT($gcc_cv_otool)
2786 # Figure out what assembler alignment features are present.
2787 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2791 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2792 [Define if your assembler supports .balign and .p2align.])])
2794 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2797 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2798 [Define if your assembler supports specifying the maximum number
2799 of bytes to skip when using the GAS .p2align command.])])
2801 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2804 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2805 [Define if your assembler supports .literal16.])])
2807 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2809 [conftest_label1: .word 0
2811 conftest_label2: .word 0
2813 [if test x$gcc_cv_nm != x; then
2814 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2815 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2816 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2818 else gcc_cv_as_subsection_m1=yes
2820 rm -f conftest.nm1 conftest.nm2
2822 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2823 [Define if your assembler supports .subsection and .subsection -1 starts
2824 emitting at the beginning of your section.])])
2826 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2829 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2831 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2833 [ .weakref foobar, barfnot],,
2834 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2836 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2839 .NSUBSPA $CODE$,COMDAT],,
2840 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2842 # .hidden needs to be supported in both the assembler and the linker,
2843 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2844 # This is irritatingly difficult to feature test for; we have to check the
2845 # date string after the version number. If we've got an in-tree
2846 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2848 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2851 conftest_s=' .globl foobar,hidden'
2854 conftest_s=' .hidden foobar
2858 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2859 [elf,2,13,0],, [$conftest_s])
2862 # Darwin as has some visibility support, though with a different syntax.
2863 gcc_cv_as_hidden=yes
2867 # gnu_indirect_function type is an extension proposed at
2868 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2869 # selection of function implementation
2870 AC_ARG_ENABLE(gnu-indirect-function,
2871 [AS_HELP_STRING([--enable-gnu-indirect-function],
2872 [enable the use of the @gnu_indirect_function to glibc systems])],
2873 [case $enable_gnu_indirect_function in
2875 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2876 Valid choices are 'yes' and 'no'.]) ;;
2878 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2882 AC_MSG_CHECKING(linker ifunc IRELATIVE support)
2883 cat > conftest.s <<EOF
2885 .type foo_resolver, @function
2888 .size foo_resolver, .-foo_resolver
2891 .type foo, %gnu_indirect_function
2892 .set foo, foo_resolver
2895 .type bar, @function
2901 if test x$gcc_cv_as != x \
2902 && test x$gcc_cv_ld != x \
2903 && test x$gcc_cv_readelf != x \
2904 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2905 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \
2906 && $gcc_cv_readelf --relocs --wide conftest \
2907 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then
2908 enable_gnu_indirect_function=yes
2910 rm -f conftest conftest.o conftest.s
2911 AC_MSG_RESULT($enable_gnu_indirect_function)
2915 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2916 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2917 [Define if your system supports gnu indirect functions.])
2921 if test $in_tree_ld != yes ; then
2922 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2923 if echo "$ld_ver" | grep GNU > /dev/null; then
2924 if test x"$ld_is_gold" = xyes; then
2925 # GNU gold --version looks like this:
2927 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2929 # We extract the binutils version which is more familiar and specific
2930 # than the gold version.
2931 ld_vers=`echo $ld_ver | sed -n \
2932 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2934 # GNU ld --version looks like this:
2936 # GNU ld (GNU Binutils) 2.21.51.20110225
2937 ld_vers=`echo $ld_ver | sed -n \
2938 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2940 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
2941 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2942 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2943 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2947 # Solaris 2 ld -V output looks like this for a regular version:
2949 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2951 # but test versions add stuff at the end:
2953 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2955 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2956 # numbers can be used in ld.so.1 feature checks even if a different
2957 # linker is configured.
2958 ld_ver=`$gcc_cv_ld -V 2>&1`
2959 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2960 ld_vers=`echo $ld_ver | sed -n \
2961 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2962 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2963 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2971 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2972 [[if test $in_tree_ld = yes ; then
2974 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2975 && test $in_tree_ld_is_elf = yes; then
2976 gcc_cv_ld_hidden=yes
2979 gcc_cv_ld_hidden=yes
2980 if test x"$ld_is_gold" = xyes; then
2982 elif echo "$ld_ver" | grep GNU > /dev/null; then
2983 if test 0"$ld_date" -lt 20020404; then
2984 if test -n "$ld_date"; then
2985 # If there was date string, but was earlier than 2002-04-04, fail
2987 elif test -z "$ld_vers"; then
2988 # If there was no date string nor ld version number, something is wrong
2991 test -z "$ld_vers_patch" && ld_vers_patch=0
2992 if test "$ld_vers_major" -lt 2; then
2994 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2995 gcc_cv_ld_hidden="no"
2996 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
3004 gcc_cv_ld_hidden=yes
3007 # Darwin ld has some visibility support.
3008 gcc_cv_ld_hidden=yes
3010 hppa64*-*-hpux* | ia64*-*-hpux*)
3011 gcc_cv_ld_hidden=yes
3014 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
3015 # .symbolic was only added in Solaris 9 12/02.
3016 gcc_cv_ld_hidden=yes
3024 libgcc_visibility=no
3025 AC_SUBST(libgcc_visibility)
3026 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
3027 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
3028 libgcc_visibility=yes
3029 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
3030 [Define if your assembler and linker support .hidden.])
3033 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3034 gcc_cv_ld_ro_rw_mix=unknown
3035 if test $in_tree_ld = yes ; then
3036 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3037 && test $in_tree_ld_is_elf = yes; then
3038 gcc_cv_ld_ro_rw_mix=read-write
3040 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3041 echo '.section myfoosect, "a"' > conftest1.s
3042 echo '.section myfoosect, "aw"' > conftest2.s
3043 echo '.byte 1' >> conftest2.s
3044 echo '.section myfoosect, "a"' > conftest3.s
3045 echo '.byte 0' >> conftest3.s
3046 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3047 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3048 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3049 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3050 conftest2.o conftest3.o > /dev/null 2>&1; then
3051 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3052 | sed -e '/myfoosect/!d' -e N`
3053 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3054 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3055 gcc_cv_ld_ro_rw_mix=read-only
3057 gcc_cv_ld_ro_rw_mix=read-write
3062 rm -f conftest.* conftest[123].*
3065 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3066 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3067 [Define if your linker links a mix of read-only
3068 and read-write sections into a read-write section.])
3070 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3072 gcc_AC_INITFINI_ARRAY
3074 # Check if we have .[us]leb128, and support symbol arithmetic with it.
3075 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
3083 [[# GAS versions before 2.11 do not support uleb128,
3084 # despite appearing to.
3085 # ??? There exists an elf-specific test that will crash
3086 # the assembler. Perhaps it's better to figure out whether
3087 # arbitrary sections are supported and try the test.
3088 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
3089 if echo "$as_ver" | grep GNU > /dev/null; then
3090 as_vers=`echo $as_ver | sed -n \
3091 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3092 as_major=`expr "$as_vers" : '\([0-9]*\)'`
3093 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
3094 if test $as_major -eq 2 && test $as_minor -lt 11
3096 else gcc_cv_as_leb128=yes
3099 [AC_DEFINE(HAVE_AS_LEB128, 1,
3100 [Define if your assembler supports .sleb128 and .uleb128.])],
3101 [AC_DEFINE(HAVE_AS_LEB128, 0,
3102 [Define if your assembler supports .sleb128 and .uleb128.])])
3104 # Determine if an .eh_frame section is read-only.
3105 gcc_fn_eh_frame_ro () {
3106 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
3107 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
3108 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3111 # Check if we have assembler support for unwind directives.
3112 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3119 .cfi_escape 1, 2, 3, 4, 5
3123 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3124 # read-only and read-write sections, we need to make sure that the
3125 # assembler used emits read-write .eh_frame sections.
3126 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3127 gcc_cv_as_cfi_directive=yes
3128 elif test "x$gcc_cv_objdump" = x; then
3129 # No objdump, err on the side of caution.
3130 gcc_cv_as_cfi_directive=no
3132 if test x$gas = xyes; then
3140 sparc*-*-solaris2.*)
3141 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3142 if gcc_fn_eh_frame_ro $as_32_opt \
3143 || gcc_fn_eh_frame_ro $as_64_opt; then
3144 gcc_cv_as_cfi_directive=no
3146 gcc_cv_as_cfi_directive=yes
3149 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3150 # On Solaris/x86, make sure that GCC and assembler agree on using
3151 # read-only .eh_frame sections for 64-bit.
3152 if gcc_fn_eh_frame_ro $as_32_opt; then
3153 gcc_cv_as_cfi_directive=no
3154 elif gcc_fn_eh_frame_ro $as_64_opt; then
3155 gcc_cv_as_cfi_directive=yes
3157 gcc_cv_as_cfi_directive=no
3164 gcc_cv_as_cfi_directive=yes
3167 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3168 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3172 .cfi_adjust_cfa_offset 64
3174 .cfi_adjust_cfa_offset 128
3177 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3178 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3179 gcc_cv_as_cfi_advance_working=yes
3183 # no objdump, err on the side of caution
3184 gcc_cv_as_cfi_advance_working=no
3186 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3187 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3188 [`if test $gcc_cv_as_cfi_directive = yes \
3189 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3190 [Define 0/1 if your assembler supports CFI directives.])
3192 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3193 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3194 gcc_cv_as_cfi_personality_directive, ,,
3197 .cfi_personality 0, symbol
3199 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3200 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3201 [Define 0/1 if your assembler supports .cfi_personality.])
3203 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3204 gcc_cv_as_cfi_sections_directive, ,,
3206 .cfi_sections .debug_frame, .eh_frame
3210 win32 | pe | cygwin* | mingw32*)
3211 # Need to check that we generated the correct relocation for the
3212 # .debug_frame section. This was fixed for binutils 2.21.
3213 gcc_cv_as_cfi_sections_directive=no
3214 if test "x$gcc_cv_objdump" != x; then
3215 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3216 grep secrel > /dev/null; then
3217 gcc_cv_as_cfi_sections_directive=yes
3222 gcc_cv_as_cfi_sections_directive=yes
3225 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3226 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3227 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3228 [Define 0/1 if your assembler supports .cfi_sections.])
3230 # GAS versions up to and including 2.11.0 may mis-optimize
3232 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3240 .section .eh_frame,"aw",@progbits
3242 .4byte .LECIE1-.LSCIE1
3256 .4byte .LEFDE1-.LASFDE1
3258 .4byte .LASFDE1-__FRAME_BEGIN__
3266 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3267 cat > conftest.lit <<EOF
3268 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3269 0010 01000000 12000000 18000000 00000000 ................
3270 0020 08000000 04080000 0044 .........D @&t@
3272 cat > conftest.big <<EOF
3273 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3274 0010 00000001 00000012 00000018 00000000 ................
3275 0020 00000008 04000000 0844 .........D @&t@
3277 # If the assembler didn't choke, and we can objdump,
3278 # and we got the correct data, then succeed.
3279 # The text in the here-document typically retains its unix-style line
3280 # endings, while the output of objdump will use host line endings.
3281 # Therefore, use diff -b for the comparisons.
3282 if test x$gcc_cv_objdump != x \
3283 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3284 | tail -3 > conftest.got \
3285 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3286 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3288 gcc_cv_as_eh_frame=yes
3289 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3290 gcc_cv_as_eh_frame=buggy
3292 # Uh oh, what do we do now?
3293 gcc_cv_as_eh_frame=no
3296 if test $gcc_cv_as_eh_frame = buggy; then
3297 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3298 [Define if your assembler mis-optimizes .eh_frame data.])
3301 # Test if the assembler supports the section flag 'e' or #exclude for
3302 # specifying an excluded section.
3303 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3304 [2,22,51], [--fatal-warnings],
3307 if test $gcc_cv_as_section_exclude_e = no; then
3309 # Solaris as uses #exclude instead.
3313 conftest_s='.section "foo1", #exclude'
3315 i?86-*-solaris2* | x86_64-*-solaris2*)
3316 conftest_s='.section foo1, #exclude'
3321 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3325 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3326 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3327 [Define if your assembler supports specifying the exclude section flag.])
3329 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3330 [elf,2,12,0], [--fatal-warnings],
3331 [.section .rodata.str, "aMS", @progbits, 1])
3332 if test $gcc_cv_as_shf_merge = no; then
3333 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3334 [elf,2,12,0], [--fatal-warnings],
3335 [.section .rodata.str, "aMS", %progbits, 1])
3337 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3338 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3339 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3341 gcc_cv_ld_aligned_shf_merge=yes
3343 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3345 sparc*-*-solaris2.11*)
3346 if test x"$gnu_ld" = xno \
3347 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3348 gcc_cv_ld_aligned_shf_merge=no
3352 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3353 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3354 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3356 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3357 [.stabs "gcc2_compiled.",60,0,0,0],,
3358 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3359 [Define if your assembler supports .stabs.])])
3361 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3362 gcc_cv_as_comdat_group,
3363 [elf,2,16,0], [--fatal-warnings],
3364 [.section .text,"axG",@progbits,.foo,comdat])
3365 if test $gcc_cv_as_comdat_group = yes; then
3366 gcc_cv_as_comdat_group_percent=no
3367 gcc_cv_as_comdat_group_group=no
3369 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3370 gcc_cv_as_comdat_group_percent,
3371 [elf,2,16,0], [--fatal-warnings],
3372 [.section .text,"axG",%progbits,.foo,comdat])
3373 if test $gcc_cv_as_comdat_group_percent = yes; then
3374 gcc_cv_as_comdat_group_group=no
3377 # Sun as uses a completely different syntax.
3382 .group foo,".text%foo",#comdat
3383 .section ".text%foo", #alloc,#execinstr,#progbits
3388 i?86-*-solaris2* | x86_64-*-solaris2*)
3390 .group foo,.text%foo,#comdat
3391 .section .text%foo, "ax", @progbits
3397 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3398 gcc_cv_as_comdat_group_group,
3402 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3403 gcc_cv_as_comdat_group_group=no
3407 if test x"$ld_is_gold" = xyes; then
3409 elif test $in_tree_ld = yes ; then
3411 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3412 && test $in_tree_ld_is_elf = yes; then
3415 elif echo "$ld_ver" | grep GNU > /dev/null; then
3417 if test 0"$ld_date" -lt 20050308; then
3418 if test -n "$ld_date"; then
3419 # If there was date string, but was earlier than 2005-03-08, fail
3421 elif test "$ld_vers_major" -lt 2; then
3423 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3430 *-*-solaris2.1[1-9]*)
3432 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3433 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3436 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3437 # least ld version 1.2267.
3438 if test "$ld_vers_major" -gt 1; then
3440 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3442 elif test "$ld_vers_minor" -ge 2267; then
3447 # Assume linkers other than GNU ld don't support COMDAT group.
3453 # Allow overriding the automatic COMDAT group tests above.
3454 AC_ARG_ENABLE(comdat,
3455 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3456 [comdat_group="$enable_comdat"])
3457 if test $comdat_group = no; then
3458 gcc_cv_as_comdat_group=no
3459 gcc_cv_as_comdat_group_percent=no
3460 gcc_cv_as_comdat_group_group=no
3462 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3463 [`if test $gcc_cv_as_comdat_group = yes \
3464 || test $gcc_cv_as_comdat_group_percent = yes \
3465 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3466 [Define 0/1 if your assembler and linker support COMDAT groups.])
3468 # Restrict this test to Solaris/x86: other targets define this statically.
3470 i?86-*-solaris2* | x86_64-*-solaris2*)
3471 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3472 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3476 # Full support for hidden thunks in linkonce sections only appeared in
3477 # Solaris 11/OpenSolaris.
3478 *-*-solaris2.1[[1-9]]*)
3486 AC_MSG_RESULT($hidden_linkonce)
3487 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3488 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3489 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3493 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3498 .loc 1 1 0 is_stmt 1],,
3499 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3500 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3502 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3503 gcc_cv_as_discriminator,
3507 .loc 1 1 0 discriminator 1],,
3508 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3509 [Define if your assembler supports the .loc discriminator sub-directive.])])
3511 # Catch the newlib flag of the same name so we can gate GCC features on it.
3512 AC_ARG_ENABLE(newlib-nano-formatted-io,
3513 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3515 [case "${enableval}" in
3519 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3523 # Thread-local storage - the check is heavily parameterized.
3532 .section ".tdata","awT",@progbits
3535 ldq $27,__tls_get_addr($29) !literal!1
3536 lda $16,foo($29) !tlsgd!1
3537 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3538 ldq $27,__tls_get_addr($29) !literal!2
3539 lda $16,foo($29) !tlsldm!2
3540 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3541 ldq $1,foo($29) !gotdtprel
3542 ldah $2,foo($29) !dtprelhi
3543 lda $3,foo($2) !dtprello
3544 lda $4,foo($29) !dtprel
3545 ldq $1,foo($29) !gottprel
3546 ldah $2,foo($29) !tprelhi
3547 lda $3,foo($2) !tprello
3548 lda $4,foo($29) !tprel'
3551 tls_as_opt=--fatal-warnings
3555 add_s r0,r0, @foo@tpoff'
3559 cris-*-*|crisv32-*-*)
3561 .section ".tdata","awT",@progbits
3568 tls_as_opt=--fatal-warnings
3572 .section ".tdata","awT",@progbits
3584 .section ".tdata","awT",@progbits
3588 addil LT%foo-$tls_gdidx$,gp
3589 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3592 addil LT%foo-$tls_ldidx$,gp
3594 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3595 addil LR%foo-$tls_dtpoff$,%ret0
3596 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3598 addil LT%foo-$tls_ieoff$,gp
3599 ldw RT%foo-$tls_ieoff$(%r1),%t2
3602 addil LR%foo-$tls_leoff$,%t1
3603 ldo RR%foo-$tls_leoff$(%r1),%t2'
3606 tls_as_opt=--fatal-warnings
3610 .section ".tdata","awT",%progbits
3621 i[34567]86-*-* | x86_64-*-*)
3623 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3630 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3632 .section .tdata,"awt",@progbits'
3637 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3638 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3642 .section ".tdata","awT",@progbits'
3646 tls_as_opt="--fatal-warnings"
3650 if test x$on_solaris = xyes; then
3652 yes) tls_as_opt="$tls_as_opt --32" ;;
3655 conftest_s="$conftest_s
3659 leal foo@tlsgd(,%ebx,1), %eax
3660 leal foo@tlsldm(%ebx), %eax
3661 leal foo@dtpoff(%eax), %edx
3662 movl foo@gottpoff(%ebx), %eax
3663 subl foo@gottpoff(%ebx), %eax
3664 addl foo@gotntpoff(%ebx), %eax
3665 movl foo@indntpoff, %eax
3666 movl \$foo@tpoff, %eax
3667 subl \$foo@tpoff, %eax
3668 leal foo@ntpoff(%ecx), %eax"
3671 if test x$on_solaris = xyes; then
3673 yes) tls_as_opt="$tls_as_opt --64" ;;
3674 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3677 conftest_s="$conftest_s
3681 leaq foo@tlsgd(%rip), %rdi
3682 leaq foo@tlsld(%rip), %rdi
3683 leaq foo@dtpoff(%rax), %rdx
3684 movq foo@gottpoff(%rip), %rax
3685 movq \$foo@tpoff, %rax"
3691 .section ".tdata","awT",@progbits
3694 addl r16 = @ltoff(@dtpmod(foo#)), gp
3695 addl r17 = @ltoff(@dtprel(foo#)), gp
3696 addl r18 = @ltoff(@tprel(foo#)), gp
3697 addl r19 = @dtprel(foo#), gp
3698 adds r21 = @dtprel(foo#), r13
3699 movl r23 = @dtprel(foo#)
3700 addl r20 = @tprel(foo#), gp
3701 adds r22 = @tprel(foo#), r13
3702 movl r24 = @tprel(foo#)'
3705 tls_as_opt=--fatal-warnings
3709 .section .tdata,"awT",@progbits
3713 addik r5,r20,x@TLSGD
3714 addik r5,r20,x@TLSLDM'
3717 tls_as_opt='--fatal-warnings'
3721 .section .tdata,"awT",@progbits
3725 addiu $4, $28, %tlsgd(x)
3726 addiu $4, $28, %tlsldm(x)
3727 lui $4, %dtprel_hi(x)
3728 addiu $4, $4, %dtprel_lo(x)
3729 lw $4, %gottprel(x)($28)
3730 lui $4, %tprel_hi(x)
3731 addiu $4, $4, %tprel_lo(x)'
3734 tls_as_opt='-32 --fatal-warnings'
3738 .section .tdata,"awT",@progbits
3743 move.l x@TLSGD(%a5),%a0
3744 move.l x@TLSLDM(%a5),%a0
3745 move.l x@TLSLDO(%a5),%a0
3746 move.l x@TLSIE(%a5),%a0
3747 move.l x@TLSLE(%a5),%a0'
3750 tls_as_opt='--fatal-warnings'
3754 .section ".tdata","awT",@progbits'
3757 tls_as_opt="--fatal-warnings"
3761 .section ".tdata","awT",%progbits
3765 add x0, x0, #:tlsgd_lo12:x
3770 tls_as_opt='--fatal-warnings'
3774 .section ".tdata","awT",@progbits
3777 l.movhi r3, tpoffha(foo)
3779 l.lwz r4, tpofflo(foo)(r3)'
3782 tls_as_opt=--fatal-warnings
3786 .extern __get_tpointer
3804 .section ".tdata","awT",@progbits
3812 addi 3,2,ld0@got@tlsgd
3818 addi 3,2,x1@got@tlsld
3824 addis 9,3,x2@dtprel@ha
3825 addi 9,9,x2@dtprel@l
3828 ld 9,x3@got@dtprel(2)
3834 tls_as_opt="-a64 --fatal-warnings"
3838 .section ".tdata","awT",@progbits
3846 addi 3,31,ld0@got@tlsgd
3848 addi 3,31,x1@got@tlsld
3851 addis 9,3,x2@dtprel@ha
3852 addi 9,9,x2@dtprel@l
3853 lwz 9,x3@got@tprel(31)
3856 addis 9,2,x2@tprel@ha
3857 addi 9,9,x2@tprel@l'
3860 tls_as_opt="-a32 --fatal-warnings"
3864 .section .tdata,"awT",@progbits
3868 call __tls_get_addr'
3871 tls_as_opt='--fatal-warnings'
3875 .section ".tdata","awT",@progbits
3884 l %r1,foo@GOTNTPOFF(%r12)
3885 l %r1,0(%r1):tls_load:foo
3886 bas %r14,0(%r1,%r13):tls_gdcall:foo
3887 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3890 tls_as_opt="-m31 --fatal-warnings"
3894 .section ".tdata","awT",@progbits
3902 lg %r1,foo@GOTNTPOFF(%r12)
3903 larl %r1,foo@INDNTPOFF
3904 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3905 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3908 tls_as_opt="-m64 -Aesame --fatal-warnings"
3910 sh-*-* | sh[123456789lbe]*-*-*)
3912 .section ".tdata","awT",@progbits
3922 tls_as_opt=--fatal-warnings
3926 sparc*-sun-solaris2.*)
3933 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3935 .section ".tdata",#alloc,#write,#tls'
3940 .section ".tdata","awT",@progbits'
3943 tls_as_opt="-32 --fatal-warnings"
3945 conftest_s="$conftest_s
3948 sethi %tgd_hi22(foo), %o0
3949 add %o0, %tgd_lo10(foo), %o1
3950 add %l7, %o1, %o0, %tgd_add(foo)
3951 call __tls_get_addr, %tgd_call(foo)
3952 sethi %tldm_hi22(foo), %l1
3953 add %l1, %tldm_lo10(foo), %l2
3954 add %l7, %l2, %o0, %tldm_add(foo)
3955 call __tls_get_addr, %tldm_call(foo)
3956 sethi %tldo_hix22(foo), %l3
3957 xor %l3, %tldo_lox10(foo), %l4
3958 add %o0, %l4, %l5, %tldo_add(foo)
3959 sethi %tie_hi22(foo), %o3
3960 add %o3, %tie_lo10(foo), %o3
3961 ld [%l7 + %o3], %o2, %tie_ld(foo)
3962 add %g7, %o2, %o4, %tie_add(foo)
3963 sethi %tle_hix22(foo), %l1
3964 xor %l1, %tle_lox10(foo), %o5
3965 ld [%g7 + %o5], %o1"
3969 .section ".tdata","awT",@progbits
3972 addli r0, zero, tls_gd(foo)
3973 auli r0, zero, tls_gd_ha16(foo)
3974 addli r0, r0, tls_gd_lo16(foo)
3976 addli r0, zero, tls_ie(foo)
3977 auli r0, r0, tls_ie_ha16(foo)
3978 addli r0, r0, tls_ie_lo16(foo)'
3981 tls_as_opt="--fatal-warnings"
3985 .section ".tdata","awT",@progbits
3988 shl16insli r0, zero, hw0_last_tls_gd(foo)
3989 shl16insli r0, zero, hw1_last_tls_gd(foo)
3990 shl16insli r0, r0, hw0_tls_gd(foo)
3992 shl16insli r0, zero, hw1_last_tls_ie(foo)
3993 shl16insli r0, r0, hw0_tls_ie(foo)'
3996 tls_as_opt="--fatal-warnings"
4000 .section ".tdata","awT",@progbits
4003 movi a8, foo@TLSFUNC
4004 movi a10, foo@TLSARG
4005 callx8.tls a8, foo@TLSCALL'
4012 if test "x$enable_tls" = xno ; then
4013 : # TLS explicitly disabled.
4014 elif test "x$enable_tls" = xyes ; then
4015 set_have_as_tls=yes # TLS explicitly enabled.
4016 elif test -z "$tls_first_major"; then
4017 : # If we don't have a check, assume no support.
4019 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
4020 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
4021 [set_have_as_tls=yes])
4023 if test $set_have_as_tls = yes ; then
4024 AC_DEFINE(HAVE_AS_TLS, 1,
4025 [Define if your assembler and linker support thread-local storage.])
4028 # Target-specific assembler checks.
4030 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
4031 gcc_cv_ld_static_dynamic=no
4032 gcc_cv_ld_static_option='-Bstatic'
4033 gcc_cv_ld_dynamic_option='-Bdynamic'
4034 if test $in_tree_ld = yes ; then
4035 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
4036 gcc_cv_ld_static_dynamic=yes
4038 elif test x$gcc_cv_ld != x; then
4039 # Check if linker supports -Bstatic/-Bdynamic option
4040 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
4041 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
4042 gcc_cv_ld_static_dynamic=yes
4045 # AIX ld uses -b flags
4046 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
4047 gcc_cv_ld_static_dynamic=yes
4048 gcc_cv_ld_static_option="-bstatic"
4049 gcc_cv_ld_dynamic_option="-bdynamic"
4051 # HP-UX ld uses -a flags to select between shared and archive.
4053 if test x"$gnu_ld" = xno; then
4054 gcc_cv_ld_static_dynamic=yes
4055 gcc_cv_ld_static_option="-aarchive_shared"
4056 gcc_cv_ld_dynamic_option="-adefault"
4059 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
4061 gcc_cv_ld_static_dynamic=yes
4066 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
4067 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
4068 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
4069 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
4070 [Define to the linker option to disable use of shared objects.])
4071 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
4072 [Define to the linker option to enable use of shared objects.])
4074 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
4076 AC_MSG_CHECKING(linker --version-script option)
4077 gcc_cv_ld_version_script=no
4078 ld_version_script_option=''
4079 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4080 gcc_cv_ld_version_script=yes
4081 ld_version_script_option='--version-script'
4082 elif test x$gcc_cv_ld != x; then
4084 # Solaris 2 ld always supports -M. It also supports a subset of
4085 # --version-script since Solaris 11.4, but requires
4086 # -z gnu-version-script-compat to activate.
4088 gcc_cv_ld_version_script=yes
4089 ld_version_script_option='-M'
4093 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4094 AC_MSG_RESULT($gcc_cv_ld_version_script)
4095 AC_SUBST(ld_version_script_option)
4097 AC_MSG_CHECKING(linker soname option)
4099 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
4100 gcc_cv_ld_soname=yes
4101 ld_soname_option='-soname'
4102 elif test x$gcc_cv_ld != x; then
4105 gcc_cv_ld_soname=yes
4106 ld_soname_option='-install_name'
4108 # Solaris 2 ld always supports -h. It also supports --soname for GNU
4109 # ld compatiblity since some Solaris 10 update.
4111 gcc_cv_ld_soname=yes
4112 ld_soname_option='-h'
4116 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4117 AC_MSG_RESULT($gcc_cv_ld_soname)
4118 AC_SUBST(ld_soname_option)
4120 if test x"$demangler_in_ld" = xyes; then
4121 AC_MSG_CHECKING(linker --demangle support)
4122 gcc_cv_ld_demangle=no
4123 if test $in_tree_ld = yes; then
4124 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4125 gcc_cv_ld_demangle=yes
4127 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4128 # Check if the GNU linker supports --demangle option
4129 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4130 gcc_cv_ld_demangle=yes
4133 if test x"$gcc_cv_ld_demangle" = xyes; then
4134 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4135 [Define if your linker supports --demangle option.])
4137 AC_MSG_RESULT($gcc_cv_ld_demangle)
4140 AC_MSG_CHECKING(linker plugin support)
4142 if test -f liblto_plugin.la; then
4143 save_ld_ver="$ld_ver"
4144 save_ld_vers_major="$ld_vers_major"
4145 save_ld_vers_minor="$ld_vers_minor"
4146 save_ld_is_gold="$ld_is_gold"
4150 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4152 # FIXME: ld_is_gold?
4153 ld_vers_major="$gcc_cv_gld_major_version"
4154 ld_vers_minor="$gcc_cv_gld_minor_version"
4156 # Determine plugin linker version.
4157 # FIXME: Partial duplicate from above, generalize.
4159 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4160 if echo "$ld_ver" | grep GNU > /dev/null; then
4161 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4163 ld_vers=`echo $ld_ver | sed -n \
4164 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4166 ld_vers=`echo $ld_ver | sed -n \
4167 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4169 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4170 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4175 # Determine plugin support.
4176 if echo "$ld_ver" | grep GNU > /dev/null; then
4177 # Require GNU ld or gold 2.21+ for plugin support by default.
4178 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4180 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4181 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4186 ld_ver="$save_ld_ver"
4187 ld_vers_major="$save_ld_vers_major"
4188 ld_vers_minor="$save_ld_vers_minor"
4189 ld_is_gold="$save_ld_is_gold"
4191 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4192 [Define to the level of your linker's plugin support.])
4193 AC_MSG_RESULT($gcc_cv_lto_plugin)
4195 # Target OS-specific assembler checks.
4197 case "$target_os" in
4199 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4200 gcc_cv_as_mmacosx_version_min,,
4201 [-mmacosx-version-min=10.1], [.text],,
4202 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4203 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4207 # Target CPU-specific assembler checks.
4211 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4212 [-mabi=lp64], [.text],,,)
4213 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4214 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4215 [Define if your assembler supports the -mabi option.])
4217 if test x$with_abi = xilp32; then
4218 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4219 Upgrade the Assembler.])
4221 if test x"$with_multilib_list" = xdefault; then
4222 TM_MULTILIB_CONFIG=lp64
4224 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4225 for aarch64_multilib in ${aarch64_multilibs}; do
4226 case ${aarch64_multilib} in
4228 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4229 Upgrade the Assembler.])
4237 # Check if we have binutils support for relocations types needed by -fpic
4238 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4241 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4242 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4243 [Define if your assembler supports relocs needed by -fpic.])])
4244 # Enable Branch Target Identification Mechanism and Return Address
4245 # Signing by default.
4246 AC_ARG_ENABLE(standard-branch-protection,
4248 AS_HELP_STRING([--enable-standard-branch-protection],
4249 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4250 AS_HELP_STRING([--disable-standard-branch-protection],
4251 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4256 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4261 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4262 Valid choices are 'yes' and 'no'.])
4267 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4268 AC_ARG_ENABLE(fix-cortex-a53-835769,
4270 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4271 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4272 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4273 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4278 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4283 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4284 Valid choices are 'yes' and 'no'.])
4290 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4291 AC_ARG_ENABLE(fix-cortex-a53-843419,
4293 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4294 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4295 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4296 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4301 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4306 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4307 Valid choices are 'yes' and 'no'.])
4315 # All TARGET_ABI_OSF targets.
4316 alpha*-*-linux* | alpha*-*-*bsd*)
4317 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4318 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4321 extbl $3, $2, $3 !lituse_bytoff!1
4322 ldq $2, a($29) !literal!1
4323 ldq $4, b($29) !literal!2
4324 ldq_u $3, 0($2) !lituse_base!1
4325 ldq $27, f($29) !literal!5
4326 jsr $26, ($27), f !lituse_jsr!5
4327 ldah $29, 0($26) !gpdisp!3
4328 lda $0, c($29) !gprel
4329 ldah $1, d($29) !gprelhigh
4330 lda $1, d($1) !gprellow
4331 lda $29, 0($29) !gpdisp!3],,
4332 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4333 [Define if your assembler supports explicit relocations.])])
4334 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4335 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4338 ldq $27, a($29) !literal!1
4339 jsr $26, ($27), a !lituse_jsrdirect!1],,
4340 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4341 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4345 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4346 [--mlink-relax], [.text],,
4347 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4348 [Define if your avr assembler supports --mlink-relax option.])])
4350 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4352 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4353 [Define if your avr assembler supports -mrmw option.])])
4355 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4356 gcc_cv_as_avr_mgccisr,,
4362 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4363 [Define if your avr assembler supports -mgcc-isr option.])])
4365 # Check how default linker description file implements .rodata for
4366 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4367 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4368 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4369 cat > conftest.s <<EOF
4370 .section .rodata,"a",@progbits
4372 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4377 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4378 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4379 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4380 if test -s conftest.nm
4382 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4384 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4385 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4387 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4388 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4389 cat conftest.nm >&AS_MESSAGE_LOG_FD
4390 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4391 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4394 AC_MSG_RESULT(test failed)
4395 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4396 cat conftest.s >&AS_MESSAGE_LOG_FD
4397 AC_MSG_WARN([[see `config.log' for details]])
4399 rm -f conftest.s conftest.o conftest.elf conftest.nm
4403 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4404 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4405 [-no-mul-bug-abort], [.text],,
4406 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4407 [Define if your assembler supports the -no-mul-bug-abort option.])])
4411 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4413 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4414 [Define if your assembler supports -relax option.])])
4416 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4417 gcc_cv_as_sparc_gotdata_op,,
4424 sethi %gdop_hix22(foo), %g1
4425 xor %g1, %gdop_lox10(foo), %g1
4426 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4427 [if test x$gcc_cv_ld != x \
4428 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4429 if test x$gcc_cv_objdump != x; then
4430 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4431 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4432 gcc_cv_as_sparc_gotdata_op=no
4434 gcc_cv_as_sparc_gotdata_op=yes
4439 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4440 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4442 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4443 gcc_cv_as_sparc_ua_pcrel,,
4451 .uaword %r_disp32(foo)],
4452 [if test x$gcc_cv_ld != x \
4453 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4454 gcc_cv_as_sparc_ua_pcrel=yes
4457 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4458 [Define if your assembler and linker support unaligned PC relative relocs.])
4460 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4461 gcc_cv_as_sparc_ua_pcrel_hidden,,
4466 .uaword %r_disp32(foo)
4467 .byte 0x32, 0x33, 0x34
4472 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4473 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4474 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4475 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4476 if $gcc_cv_objdump -R conftest 2> /dev/null \
4477 | grep 'DISP32' > /dev/null 2>&1; then
4480 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4484 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4485 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4486 ]) # unaligned pcrel relocs
4488 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4489 gcc_cv_as_sparc_offsetable_lo10,,
4492 or %g1, %lo(ab) + 12, %g1
4493 or %g1, %lo(ab + 12), %g1],
4494 [if test x$gcc_cv_objdump != x \
4495 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4496 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4497 gcc_cv_as_sparc_offsetable_lo10=yes
4499 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4500 [Define if your assembler supports offsetable %lo().])])
4502 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4503 gcc_cv_as_sparc_fmaf,,
4506 .register %g2, #scratch
4507 .register %g3, #scratch
4509 fmaddd %f0, %f2, %f4, %f6
4510 addxccc %g1, %g2, %g3
4511 fsrl32 %f2, %f4, %f8
4512 fnaddd %f10, %f12, %f14],,
4513 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4514 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4516 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4517 gcc_cv_as_sparc_sparc4,,
4520 .register %g2, #scratch
4521 .register %g3, #scratch
4524 1: cwbneg %g2, %g3, 1f
4527 aes_kexpand0 %f4, %f6, %f8
4528 des_round %f38, %f40, %f42, %f44
4529 camellia_f %f54, %f56, %f58, %f60
4530 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4531 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4532 [Define if your assembler supports SPARC4 instructions.])])
4534 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4535 gcc_cv_as_sparc_sparc5,,
4538 .register %g2, #scratch
4539 .register %g3, #scratch
4542 fpadd8 %f0, %f2, %f4],,
4543 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4544 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4546 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4547 gcc_cv_as_sparc_sparc6,,
4550 .register %g2, #scratch
4551 .register %g3, #scratch
4554 fpsll64x %f0, %f2, %f4],,
4555 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4556 [Define if your assembler supports SPARC6 instructions.])])
4558 gcc_GAS_CHECK_FEATURE([LEON instructions],
4559 gcc_cv_as_sparc_leon,,
4562 .register %g2, #scratch
4563 .register %g3, #scratch
4567 casa [[%g2]] 0xb, %g3, %g1],,
4568 [AC_DEFINE(HAVE_AS_LEON, 1,
4569 [Define if your assembler supports LEON instructions.])])
4573 i[34567]86-*-* | x86_64-*-*)
4577 # Full C++ conformance when using a shared libstdc++-v3 requires some
4578 # support from the Cygwin DLL, which in more recent versions exports
4579 # wrappers to aid in interposing and redirecting operators new, delete,
4580 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4581 # are configuring for a version of Cygwin that exports the wrappers.
4582 if test x$host = x$target && test x$host_cpu = xi686; then
4583 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4585 # Can't check presence of libc functions during cross-compile, so
4586 # we just have to assume we're building for an up-to-date target.
4587 gcc_ac_cygwin_dll_wrappers=yes
4589 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4590 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4591 [Define if you want to generate code by default that assumes that the
4592 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4595 cygwin* | pe | mingw32*)
4596 # Recent binutils allows the three-operand form of ".comm" on PE. This
4597 # definition is used unconditionally to initialise the default state of
4598 # the target option variable that governs usage of the feature.
4599 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4600 [2,19,52],,[.comm foo,1,32])
4601 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4602 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4603 [Define if your assembler supports specifying the alignment
4604 of objects allocated using the GAS .comm command.])
4605 # Used for DWARF 2 in PE
4606 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4607 gcc_cv_as_ix86_pe_secrel32,
4613 [if test x$gcc_cv_ld != x \
4614 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4615 gcc_cv_as_ix86_pe_secrel32=yes
4618 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4619 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4620 # Test if the assembler supports the extended form of the .section
4621 # directive that specifies section alignment. LTO support uses this,
4622 # but normally only after installation, so we warn but don't fail the
4623 # configure if LTO is enabled but the assembler does not support it.
4624 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4625 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4626 if test x$gcc_cv_as_section_has_align != xyes; then
4627 case ",$enable_languages," in
4629 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4636 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4637 [-xbrace_comment=no], [.text],,
4638 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4639 [Define if your assembler supports -xbrace_comment option.])])
4641 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4642 gcc_cv_as_ix86_filds,,,
4643 [filds (%ebp); fists (%ebp)],,
4644 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4645 [Define if your assembler uses filds and fists mnemonics.])])
4647 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4648 gcc_cv_as_ix86_fildq,,,
4649 [fildq (%ebp); fistpq (%ebp)],,
4650 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4651 [Define if your assembler uses fildq and fistq mnemonics.])])
4653 gcc_GAS_CHECK_FEATURE([cmov syntax],
4654 gcc_cv_as_ix86_cmov_sun_syntax,,,
4655 [cmovl.l %edx, %eax],,
4656 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4657 [Define if your assembler supports the Sun syntax for cmov.])])
4659 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4660 gcc_cv_as_ix86_ffreep,,,
4662 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4663 [Define if your assembler supports the ffreep mnemonic.])])
4665 gcc_GAS_CHECK_FEATURE([.quad directive],
4666 gcc_cv_as_ix86_quad,,,
4668 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4669 [Define if your assembler supports the .quad directive.])])
4671 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4672 gcc_cv_as_ix86_sahf,,,
4675 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4676 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4678 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4679 gcc_cv_as_ix86_interunit_movq,,,
4683 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4684 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4685 [Define if your assembler supports interunit movq mnemonic.])
4687 gcc_GAS_CHECK_FEATURE([hle prefixes],
4688 gcc_cv_as_ix86_hle,,,
4689 [lock xacquire cmpxchg %esi, (%ecx)],,
4690 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4691 [Define if your assembler supports HLE prefixes.])])
4693 gcc_GAS_CHECK_FEATURE([swap suffix],
4694 gcc_cv_as_ix86_swap,,,
4695 [movl.s %esp, %ebp],,
4696 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4697 [Define if your assembler supports the swap suffix.])])
4699 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4700 gcc_cv_as_ix86_diff_sect_delta,,,
4708 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4709 [Define if your assembler supports the subtraction of symbols in different sections.])])
4711 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4712 gcc_cv_as_ix86_rep_lock_prefix,,,
4718 lock addl %edi, (%eax,%esi)
4719 lock orl $0, (%esp)],,
4720 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4721 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4723 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4724 gcc_cv_as_ix86_ud2,,,
4726 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4727 [Define if your assembler supports the 'ud2' mnemonic.])])
4729 # Enforce 32-bit output with gas and gld.
4730 if test x$gas = xyes; then
4731 as_ix86_gas_32_opt="--32"
4733 if echo "$ld_ver" | grep GNU > /dev/null; then
4734 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4735 ld_ix86_gld_32_opt="-melf_i386_sol2"
4737 ld_ix86_gld_32_opt="-melf_i386"
4741 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4742 gcc_cv_as_ix86_tlsgdplt,,
4743 [$as_ix86_gas_32_opt],
4744 [call tls_gd@tlsgdplt],
4745 [if test x$gcc_cv_ld != x \
4746 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4747 gcc_cv_as_ix86_tlsgdplt=yes
4750 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4751 [Define if your assembler and linker support @tlsgdplt.])])
4754 .section .tdata,"aw'$tls_section_flag'",@progbits
4756 .section .text,"ax",@progbits
4757 call tls_ld@tlsldmplt'
4759 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4760 gcc_cv_as_ix86_tlsldmplt,,
4761 [$as_ix86_gas_32_opt],
4763 [if test x$gcc_cv_ld != x \
4764 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4765 gcc_cv_as_ix86_tlsldmplt=yes
4768 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4769 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4770 [Define to 1 if your assembler and linker support @tlsldmplt.])
4773 .section .text,"ax",@progbits
4775 .type _start, @function
4777 leal value@tlsldm(%ebx), %eax
4778 call ___tls_get_addr@plt
4780 .section .tdata,"aw'$tls_section_flag'",@progbits
4781 .type value, @object
4783 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4784 gcc_cv_as_ix86_tlsldm,,
4785 [$as_ix86_gas_32_opt],
4787 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4788 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4789 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4790 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4791 gcc_cv_as_ix86_tlsldm=yes
4795 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4796 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4797 [Define to 1 if your assembler and linker support @tlsldm.])
4808 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4809 gcc_cv_as_ix86_got32x,,
4810 [$as_ix86_gas_32_opt],
4812 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4813 && test x$gcc_cv_readelf != x \
4814 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4815 | grep R_386_GOT32X > /dev/null 2>&1 \
4816 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4817 if $gcc_cv_objdump -dw conftest 2>&1 \
4818 | grep 0xffffff > /dev/null 2>&1; then
4819 gcc_cv_as_ix86_got32x=no
4821 gcc_cv_as_ix86_got32x=yes
4825 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4826 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4827 [Define 0/1 if your assembler and linker support @GOT.])
4829 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4830 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4831 [$as_ix86_gas_32_opt],
4837 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4838 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4839 [Define true if the assembler supports '.long foo@GOTOFF'.])
4842 .section .text,"ax",@progbits
4844 .type _start, @function
4846 leal ld@tlsldm(%ecx), %eax
4847 call *___tls_get_addr@GOT(%ecx)
4848 leal gd@tlsgd(%ecx), %eax
4849 call *___tls_get_addr@GOT(%ecx)
4851 .section .tdata,"aw'$tls_section_flag'",@progbits
4859 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4860 gcc_cv_as_ix86_tls_get_addr_via_got,,
4861 [$as_ix86_gas_32_opt],
4863 [if test x$gcc_cv_ld != x \
4864 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4865 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4868 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4869 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4870 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4874 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4875 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4877 addl r15 = @ltoffx(x#), gp
4879 ld8.mov r16 = [[r15]], x#
4881 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4882 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4890 gcc_GAS_CHECK_FEATURE([.machine directive support],
4891 gcc_cv_as_machine_directive,,,
4892 [ .machine ppc7400])
4893 if test x$gcc_cv_as_machine_directive != xyes; then
4894 echo "*** This target requires an assembler supporting \".machine\"" >&2
4895 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4896 test x$build = x$target && exit 1
4902 *-*-aix*) conftest_s=' .machine "pwr5"
4905 *-*-darwin*) conftest_s=' .text
4907 *) conftest_s=' .machine power4
4912 gcc_GAS_CHECK_FEATURE([mfcr field support],
4913 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4915 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4916 [Define if your assembler supports mfcr field.])])
4919 *-*-aix*) conftest_s=' .csect .text[[PR]]
4921 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4925 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4926 *) conftest_s=' .text
4928 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4931 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4932 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4934 [AC_DEFINE(HAVE_AS_REL16, 1,
4935 [Define if your assembler supports R_PPC_REL16 relocs.])])
4938 *-*-aix*) conftest_s=' .machine "pwr7"
4941 *) conftest_s=' .machine power7
4946 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4947 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4949 [AC_DEFINE(HAVE_AS_VSX, 1,
4950 [Define if your assembler supports VSX instructions.])])
4952 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4953 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4954 [.gnu_attribute 4,1],,
4955 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4956 [Define if your assembler supports .gnu_attribute.])])
4958 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4959 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4960 [ .reloc .,R_PPC64_ENTRY; nop],,
4961 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4962 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4964 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4965 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4966 [ .reloc .,R_PPC_PLTSEQ; nop],,
4967 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4968 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4972 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4973 gcc_cv_as_aix_ref, [2,21,0],,
4974 [ .csect stuff[[rw]]
4980 [AC_DEFINE(HAVE_AS_REF, 1,
4981 [Define if your assembler supports .ref])])
4983 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4984 gcc_cv_as_aix_dwloc, [2,21,0],,
4989 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4990 [Define if your assembler supports AIX debug frame section label reference.])])
4996 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4997 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4998 [ lw $4,%gp_rel(foo)($4)],,
4999 [if test x$target_cpu_default = x
5000 then target_cpu_default=MASK_EXPLICIT_RELOCS
5001 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
5004 gcc_GAS_CHECK_FEATURE([-mno-shared support],
5005 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
5006 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
5007 [Define if the assembler understands -mno-shared.])])
5009 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5010 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
5011 [.gnu_attribute 4,1],,
5012 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5013 [Define if your assembler supports .gnu_attribute.])])
5015 gcc_GAS_CHECK_FEATURE([.module support],
5016 gcc_cv_as_mips_dot_module,,[-32],
5019 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
5020 [Define if your assembler supports .module.])])
5021 if test x$gcc_cv_as_mips_dot_module = xno \
5022 && test x$with_fp_32 != x; then
5024 [Requesting --with-fp-32= requires assembler support for .module.])
5027 gcc_GAS_CHECK_FEATURE([.micromips support],
5028 gcc_cv_as_micromips_support,,[--fatal-warnings],
5030 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
5031 [Define if your assembler supports the .set micromips directive])])
5033 gcc_GAS_CHECK_FEATURE([.dtprelword support],
5034 gcc_cv_as_mips_dtprelword, [2,18,0],,
5035 [.section .tdata,"awT",@progbits
5039 .dtprelword x+0x8000],,
5040 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
5041 [Define if your assembler supports .dtprelword.])])
5043 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
5044 gcc_cv_as_mips_dspr1_mult,,,
5054 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
5055 [Define if your assembler supports DSPR1 mult.])])
5057 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
5058 gcc_cv_as_ld_jalr_reloc=no
5059 if test $gcc_cv_as_mips_explicit_relocs = yes; then
5060 if test $in_tree_ld = yes ; then
5061 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
5062 && test $in_tree_ld_is_elf = yes; then
5063 gcc_cv_as_ld_jalr_reloc=yes
5065 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
5066 echo ' .ent x' > conftest.s
5067 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
5068 echo ' lw $25,%call16(y)($28)' >> conftest.s
5069 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
5070 echo '1: jalr $25' >> conftest.s
5071 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
5072 echo '1: jalr $25' >> conftest.s
5073 echo ' .end x' >> conftest.s
5074 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
5075 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
5076 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
5077 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
5078 gcc_cv_as_ld_jalr_reloc=yes
5084 if test $gcc_cv_as_ld_jalr_reloc = yes; then
5085 if test x$target_cpu_default = x; then
5086 target_cpu_default=MASK_RELAX_PIC_CALLS
5088 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
5091 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
5093 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
5094 [gcc_cv_ld_mips_personality_relaxation],
5095 [gcc_cv_ld_mips_personality_relaxation=no
5096 if test $in_tree_ld = yes ; then
5097 if test "$gcc_cv_gld_major_version" -eq 2 \
5098 -a "$gcc_cv_gld_minor_version" -ge 21 \
5099 -o "$gcc_cv_gld_major_version" -gt 2; then
5100 gcc_cv_ld_mips_personality_relaxation=yes
5102 elif test x$gcc_cv_as != x \
5103 -a x$gcc_cv_ld != x \
5104 -a x$gcc_cv_readelf != x ; then
5105 cat > conftest.s <<EOF
5107 .cfi_personality 0x80,indirect_ptr
5114 .section .data,"aw",@progbits
5118 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5119 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5120 if $gcc_cv_readelf -d conftest 2>&1 \
5121 | grep TEXTREL > /dev/null 2>&1; then
5123 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5124 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5127 gcc_cv_ld_mips_personality_relaxation=yes
5131 rm -f conftest.s conftest.o conftest])
5132 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5133 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5134 [Define if your linker can relax absolute .eh_frame personality
5135 pointers into PC-relative form.])
5138 gcc_GAS_CHECK_FEATURE([-mnan= support],
5139 gcc_cv_as_mips_nan,,
5141 [AC_DEFINE(HAVE_AS_NAN, 1,
5142 [Define if the assembler understands -mnan=.])])
5143 if test x$gcc_cv_as_mips_nan = xno \
5144 && test x$with_nan != x; then
5146 [Requesting --with-nan= requires assembler support for -mnan=])
5150 # Earlier GAS versions generically support .gnu_attribute, but the
5151 # msp430 assembler will not do anything with it.
5152 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5153 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5154 [.gnu_attribute 4,1],,
5155 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5156 [Define if your assembler supports .gnu_attribute.])])
5157 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5158 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5159 [.mspabi_attribute 4,2],,
5160 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5161 [Define if your assembler supports .mspabi_attribute.])])
5162 if test x$enable_newlib_nano_formatted_io = xyes; then
5163 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5164 configured with --enable-newlib-nano-formatted-io.])
5168 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5169 # syntax that is documented in the ABI specification.
5170 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5171 gcc_cv_as_nios2_gotoff_relocation,,,
5174 .long %gotoff(foo)],,
5175 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5176 [Define if your assembler supports %gotoff relocation syntax.])])
5179 gcc_GAS_CHECK_FEATURE([.attribute support],
5180 gcc_cv_as_riscv_attribute, [2,32,0],,
5181 [.attribute stack_align,4],,
5182 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5183 [Define if your assembler supports .attribute.])])
5184 gcc_GAS_CHECK_FEATURE([-misa-spec= support],
5185 gcc_cv_as_riscv_isa_spec,,
5187 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1,
5188 [Define if the assembler understands -misa-spec=.])])
5189 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support],
5190 gcc_cv_as_riscv_march_zifencei,,
5191 [-march=rv32i_zifencei],,,
5192 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1,
5193 [Define if the assembler understands -march=rv*_zifencei.])])
5196 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5197 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5198 [.gnu_attribute 8,1],,
5199 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5200 [Define if your assembler supports .gnu_attribute.])])
5201 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5202 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5207 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5208 [Define if your assembler supports .machine and .machinemode.])])
5209 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5210 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5211 [ .machine z13+vx ],,
5212 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5213 [Define if your assembler supports architecture modifiers.])])
5214 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5215 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5216 [ vl %v24,0(%r15),3 ],,
5217 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5218 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5219 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5220 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5221 [ vl %v24,0(%r15),3 ],,
5222 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5223 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5228 # Mips and HP-UX need the GNU assembler.
5229 # Linux on IA64 might be able to use the Intel assembler.
5232 mips*-*-* | *-*-hpux* )
5233 if test x$gas_flag = xyes \
5234 || test x"$host" != x"$build" \
5235 || test ! -x "$gcc_cv_as" \
5236 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5239 echo "*** This configuration requires the GNU assembler" >&2
5245 # ??? Not all targets support dwarf2 debug_line, even within a version
5246 # of gas. Moreover, we need to emit a valid instruction to trigger any
5247 # info to the output file. So, as supported targets are added to gas 2.11,
5248 # add some instruction here to (also) show we expect this might work.
5249 # ??? Once 2.11 is released, probably need to add first known working
5250 # version to the per-target configury.
5252 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5253 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5254 | tilegx | tilepro | visium | xstormy16 | xtensa)
5264 if test x"$insn" != x; then
5266 .file 1 \"conftest.s\"
5269 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5270 gcc_cv_as_dwarf2_debug_line,
5271 [elf,2,11,0],, [$conftest_s],
5272 [if test x$gcc_cv_objdump != x \
5273 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5274 | grep debug_line > /dev/null 2>&1; then
5275 gcc_cv_as_dwarf2_debug_line=yes
5276 elif test x$gcc_cv_otool != x \
5277 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5278 | grep debug_line > /dev/null 2>&1; then
5279 gcc_cv_as_dwarf2_debug_line=yes
5282 # The .debug_line file table must be in the exact order that
5283 # we specified the files, since these indices are also used
5284 # by DW_AT_decl_file. Approximate this test by testing if
5285 # the assembler bitches if the same index is assigned twice.
5286 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5287 gcc_cv_as_dwarf2_file_buggy,,,
5291 if test $gcc_cv_as_dwarf2_debug_line = yes \
5292 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5293 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5294 [Define if your assembler supports dwarf2 .file/.loc directives,
5295 and preserves file table indices exactly as given.])
5297 if test $gcc_cv_as_leb128 = yes; then
5299 .file 1 \"conftest.s\"
5300 .loc 1 3 0 view .LVU1
5306 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5307 gcc_cv_as_dwarf2_debug_view,
5308 [elf,2,27,0],,[$conftest_s],,
5309 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5310 [Define if your assembler supports views in dwarf2 .loc directives.])])
5314 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5315 gcc_cv_as_gdwarf2_flag,
5316 [elf,2,11,0], [--gdwarf2], [$insn],,
5317 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5318 [Define if your assembler supports the --gdwarf2 option.])])
5320 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5321 gcc_cv_as_gdwarf_5_flag,
5322 [elf,2,36,0], [--gdwarf-5], [$insn],,
5323 [AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5324 [Define if your assembler supports the --gdwarf-5 option.])])
5326 dwarf4_debug_info_size=0x46
5327 dwarf4_high_pc_form=7
5328 dwarf4_debug_aranges_size=0x2c
5330 for dwarf4_addr_size in 8 4; do
5337 .type foo, %function
5346 .section .debug_info,\"\",%progbits
5348 .4byte $dwarf4_debug_info_size
5350 .4byte .Ldebug_abbrev0
5351 .byte 0x$dwarf4_addr_size
5353 .ascii \"GNU C17\\0\"
5357 .${dwarf4_addr_size}byte .Ltext0
5358 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5359 .4byte .Ldebug_line0
5365 .${dwarf4_addr_size}byte .LFB0
5366 .${dwarf4_addr_size}byte .LFE0-.LFB0
5370 .section .debug_abbrev,\"\",%progbits
5386 .byte 0x$dwarf4_high_pc_form
5407 .byte 0x$dwarf4_high_pc_form
5413 .section .debug_aranges,\"\",%progbits
5414 .4byte $dwarf4_debug_aranges_size
5416 .4byte .Ldebug_info0
5421 .${dwarf4_addr_size}byte .Ltext0
5422 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5423 .${dwarf4_addr_size}byte 0
5424 .${dwarf4_addr_size}byte 0
5425 .section .debug_line,\"\",%progbits
5427 .4byte .LELT0-.LSLT0
5430 .4byte .LELTP0-.LASLTP0
5458 .byte 0x$dwarf4_line_sz
5460 .${dwarf4_addr_size}byte .LM1
5465 .byte 0x$dwarf4_line_sz
5467 .${dwarf4_addr_size}byte .LM2
5472 .byte 0x$dwarf4_line_sz
5474 .${dwarf4_addr_size}byte .Letext0
5479 .section .debug_str,\"\",%progbits
5483 if test $dwarf4_addr_size = 4; then
5484 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5485 gcc_cv_as_debug_line_32_flag,
5486 [elf,2,36,0], [], [$conftest_s],,
5487 [dwarf4_success=yes])
5489 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5490 gcc_cv_as_debug_line_64_flag,
5491 [elf,2,36,0], [], [$conftest_s],,
5492 [dwarf4_success=yes])
5494 if test $dwarf4_success = yes; then
5496 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5497 gcc_cv_as_dwarf_4_debug_line_flag,
5498 [elf,2,36,0], [--gdwarf-4], [$conftest_s],,
5499 [dwarf4_success=yes])
5502 dwarf4_debug_info_size=0x36
5503 dwarf4_high_pc_form=6
5504 dwarf4_debug_aranges_size=0x1c
5508 if test $dwarf4_success = yes; then
5526 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5527 gcc_cv_as_dwarf_4_app_flag,,
5528 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5531 if test $dwarf4_success = yes; then
5535 .type foo, %function
5541 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5542 gcc_cv_as_working_gdwarf_n_flag,,
5546 if test x$gcc_cv_readelf != x \
5547 && $gcc_cv_readelf -w conftest.o 2>&1 \
5548 | grep conftest.s > /dev/null 2>&1; then
5549 gcc_cv_as_working_gdwarf_n_flag=no
5551 gcc_cv_as_working_gdwarf_n_flag=yes
5553 changequote([,])dnl])
5554 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5555 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5556 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5557 compiler generated .debug_line.])
5561 gcc_GAS_CHECK_FEATURE([--gstabs option],
5562 gcc_cv_as_gstabs_flag,
5563 [elf,2,11,0], [--gstabs], [$insn],,
5564 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5565 [Define if your assembler supports the --gstabs option.])])
5567 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5568 gcc_cv_as_debug_prefix_map_flag,
5569 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5570 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5571 [Define if your assembler supports the --debug-prefix-map option.])])
5574 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5575 gcc_cv_as_compress_debug,,,,
5576 [# gas compiled without zlib cannot compress debug sections and warns
5577 # about it, but still exits successfully. So check for this, too.
5578 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5580 gcc_cv_as_compress_debug=0
5581 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5582 # defaulting to the ELF gABI format.
5583 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5585 gcc_cv_as_compress_debug=2
5586 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5587 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5588 # Before binutils 2.26, gas only supported --compress-debug-options and
5589 # emitted the traditional GNU format.
5590 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5592 gcc_cv_as_compress_debug=1
5593 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5594 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5596 gcc_cv_as_compress_debug=0
5598 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5599 [Define to the level of your assembler's compressed debug section support.])
5600 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5601 [Define to the assembler option to enable compressed debug sections.])
5602 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5603 [Define to the assembler option to disable compressed debug sections.])
5605 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5608 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5609 [Define if your assembler supports .lcomm with an alignment field.])])
5611 if test x$with_sysroot = x && test x$host = x$target \
5612 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5613 && test "$prefix" != "NONE"; then
5614 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5615 [Define to PREFIX/include if cpp should also search that directory.])
5618 # Determine the version of glibc, if any, used on the target.
5619 AC_MSG_CHECKING([for target glibc version])
5620 AC_ARG_WITH([glibc-version],
5621 [AS_HELP_STRING([--with-glibc-version=M.N],
5622 [assume GCC used with glibc version M.N or later])], [
5623 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5624 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5625 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5627 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5629 glibc_version_major=0
5630 glibc_version_minor=0
5631 [if test -f $target_header_dir/features.h \
5632 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5633 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5634 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5635 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5637 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5638 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5639 [GNU C Library major version number used on the target, or 0.])
5640 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5641 [GNU C Library minor version number used on the target, or 0.])
5643 AC_ARG_ENABLE(gnu-unique-object,
5644 [AS_HELP_STRING([--enable-gnu-unique-object],
5645 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5646 [case $enable_gnu_unique_object in
5648 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5649 Valid choices are 'yes' and 'no'.]) ;;
5651 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5653 [.type foo, '$target_type_format_char'gnu_unique_object],,
5654 # We need to unquote above to to use the definition from config.gcc.
5655 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5656 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5658 if test x$enable_gnu_unique_object = xyes; then
5659 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5660 [Define if your assembler supports @gnu_unique_object.])
5663 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5664 [gcc_cv_as_line_zero],
5665 [gcc_cv_as_line_zero=no
5666 if test $in_tree_gas = yes; then
5667 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5668 elif test "x$gcc_cv_as" != x; then
5669 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5670 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5671 test "x`cat conftest.out`" = x
5673 gcc_cv_as_line_zero=yes
5675 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5676 cat conftest.s >&AS_MESSAGE_LOG_FD
5677 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5678 cat conftest.out >&AS_MESSAGE_LOG_FD
5680 rm -f conftest.o conftest.s conftest.out
5682 if test "x$gcc_cv_as_line_zero" = xyes; then
5683 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5684 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5687 AC_MSG_CHECKING(support for thin archives)
5688 thin_archive_support=no
5689 echo 'int main (void) { return 0; }' > conftest.c
5690 if ($AR --version | sed 1q | grep "GNU ar" \
5691 && $CC $CFLAGS -c conftest.c \
5692 && $AR rcT conftest.a conftest.o \
5693 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5694 thin_archive_support=yes
5696 rm -f conftest.c conftest.o conftest.a conftest
5697 AC_MSG_RESULT($thin_archive_support)
5698 AC_SUBST(thin_archive_support)
5700 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5701 gcc_cv_ld_eh_frame_hdr=no
5702 if test $in_tree_ld = yes ; then
5703 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5704 && test $in_tree_ld_is_elf = yes; then
5705 gcc_cv_ld_eh_frame_hdr=yes
5707 elif test x$gcc_cv_ld != x; then
5708 if echo "$ld_ver" | grep GNU > /dev/null; then
5709 # Check if linker supports --eh-frame-hdr option
5710 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5711 gcc_cv_ld_eh_frame_hdr=yes
5716 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5717 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5718 gcc_cv_ld_eh_frame_hdr=yes
5724 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5725 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5726 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5727 [Define if your linker supports .eh_frame_hdr.])
5729 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5731 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5732 gcc_cv_ld_eh_frame_ciev3=no
5733 if test $in_tree_ld = yes ; then
5734 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5735 && test $in_tree_ld_is_elf = yes; then
5736 gcc_cv_ld_eh_frame_ciev3=yes
5738 elif test x$gcc_cv_ld != x; then
5739 if echo "$ld_ver" | grep GNU > /dev/null; then
5740 gcc_cv_ld_eh_frame_ciev3=yes
5741 if test 0"$ld_date" -lt 20040513; then
5742 if test -n "$ld_date"; then
5743 # If there was date string, but was earlier than 2004-05-13, fail
5744 gcc_cv_ld_eh_frame_ciev3=no
5745 elif test "$ld_vers_major" -lt 2; then
5746 gcc_cv_ld_eh_frame_ciev3=no
5747 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5748 gcc_cv_ld_eh_frame_ciev3=no
5754 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5755 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5756 gcc_cv_ld_eh_frame_ciev3=yes
5762 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5763 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5764 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5765 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5767 AC_MSG_CHECKING(linker position independent executable support)
5769 if test $in_tree_ld = yes ; then
5771 # Full PIE support on Solaris was only introduced in gld 2.26.
5772 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5773 *) gcc_gld_pie_min_version=15 ;;
5775 if test "$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 \
5776 && test $in_tree_ld_is_elf = yes; then
5779 elif test x$gcc_cv_ld != x; then
5780 # Check if linker supports -pie option
5781 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5785 if echo "$ld_ver" | grep GNU > /dev/null \
5786 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5793 *-*-solaris2.1[[1-9]]*)
5794 # Solaris 11.3 added PIE support.
5795 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5802 if test x"$gcc_cv_ld_pie" = xyes; then
5803 AC_DEFINE(HAVE_LD_PIE, 1,
5804 [Define if your linker supports PIE option.])
5806 AC_MSG_RESULT($gcc_cv_ld_pie)
5808 AC_MSG_CHECKING(linker PIE support with copy reloc)
5809 gcc_cv_ld_pie_copyreloc=no
5810 if test $gcc_cv_ld_pie = yes ; then
5811 if test $in_tree_ld = yes ; then
5812 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5813 gcc_cv_ld_pie_copyreloc=yes
5815 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5816 # Check if linker supports -pie option with copy reloc
5818 i?86-*-linux* | x86_64-*-linux*)
5819 cat > conftest1.s <<EOF
5822 .type a_glob, @object
5827 cat > conftest2.s <<EOF
5830 .type main, @function
5832 movl %eax, a_glob(%rip)
5835 .section .data.rel,"aw",@progbits
5840 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5841 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5842 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5843 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5844 gcc_cv_ld_pie_copyreloc=yes
5846 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5851 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5852 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5853 [Define 0/1 if your linker supports -pie option with copy reloc.])
5854 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5856 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5857 gcc_cv_ld_eh_gc_sections=no
5858 if test $in_tree_ld = yes ; then
5859 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5860 && test $in_tree_ld_is_elf = yes; then
5861 gcc_cv_ld_eh_gc_sections=yes
5863 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5864 cat > conftest.s <<EOF
5867 .type _start, @function
5870 .size _start, .-_start
5871 .section .text.foo,"ax",@progbits
5872 .type foo, @function
5876 .section .gcc_except_table.foo,"a",@progbits
5879 .section .eh_frame,"a",@progbits
5882 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5883 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5884 | grep "gc-sections option ignored" > /dev/null; then
5885 gcc_cv_ld_eh_gc_sections=no
5886 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5887 | grep gcc_except_table > /dev/null; then
5888 gcc_cv_ld_eh_gc_sections=yes
5889 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5890 if test x$gcc_cv_as_comdat_group != xyes; then
5891 gcc_cv_ld_eh_gc_sections=no
5892 cat > conftest.s <<EOF
5895 .type _start, @function
5898 .size _start, .-_start
5899 .section .gnu.linkonce.t.foo,"ax",@progbits
5900 .type foo, @function
5904 .section .gcc_except_table.foo,"a",@progbits
5907 .section .eh_frame,"a",@progbits
5910 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5911 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5912 | grep "gc-sections option ignored" > /dev/null; then
5913 gcc_cv_ld_eh_gc_sections=no
5914 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5915 | grep gcc_except_table > /dev/null; then
5916 gcc_cv_ld_eh_gc_sections=yes
5922 rm -f conftest.s conftest.o conftest
5926 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5927 gcc_cv_ld_eh_gc_sections=no
5930 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5931 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5932 [Define if your linker supports garbage collection of
5933 sections in presence of EH frames.])
5935 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5937 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5938 gcc_cv_ld_eh_gc_sections_bug=no
5939 if test $in_tree_ld = yes ; then
5940 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5941 && test $in_tree_ld_is_elf = yes; then
5942 gcc_cv_ld_eh_gc_sections_bug=yes
5944 elif test x$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
5945 gcc_cv_ld_eh_gc_sections_bug=yes
5946 cat > conftest.s <<EOF
5949 .type _start, @function
5952 .size _start, .-_start
5953 .section .text.startup.foo,"ax",@progbits
5954 .type foo, @function
5958 .section .gcc_except_table.foo,"a",@progbits
5961 .section .eh_frame,"a",@progbits
5964 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5965 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5966 | grep "gc-sections option ignored" > /dev/null; then
5968 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5969 | grep gcc_except_table > /dev/null; then
5970 gcc_cv_ld_eh_gc_sections_bug=no
5973 rm -f conftest.s conftest.o conftest
5975 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5976 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5977 [Define if your linker has buggy garbage collection of
5978 sections support when .text.startup.foo like sections are used.])
5980 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5982 AC_MSG_CHECKING(linker for compressed debug sections)
5983 # gold/gld support compressed debug sections since binutils 2.19/2.21
5984 # In binutils 2.26, gld gained support for the ELF gABI format.
5985 if test $in_tree_ld = yes ; then
5986 gcc_cv_ld_compress_debug=0
5987 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5988 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5989 gcc_cv_ld_compress_debug=2
5990 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5991 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5992 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5993 gcc_cv_ld_compress_debug=3
5994 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5995 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5996 && test $in_tree_ld_is_elf = yes; then
5997 gcc_cv_ld_compress_debug=1
5999 elif echo "$ld_ver" | grep GNU > /dev/null; then
6000 if test "$ld_vers_major" -lt 2 \
6001 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
6002 gcc_cv_ld_compress_debug=0
6003 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
6004 gcc_cv_ld_compress_debug=1
6006 gcc_cv_ld_compress_debug=3
6007 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6009 if test $ld_is_gold = yes; then
6010 gcc_cv_ld_compress_debug=2
6011 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
6017 # Introduced in Solaris 11.2.
6018 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
6019 gcc_cv_ld_compress_debug=3
6020 gcc_cv_ld_compress_debug_option="-z compress-sections"
6022 gcc_cv_ld_compress_debug=0
6026 # Assume linkers other than GNU ld don't support compessed debug
6028 gcc_cv_ld_compress_debug=0
6033 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
6034 [Define to the level of your linker's compressed debug section support.])
6035 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
6036 [Define to the linker option to enable compressed debug sections.])
6037 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
6039 if test x"$ld64_flag" = x"yes"; then
6041 # Set defaults for possibly untestable items.
6042 gcc_cv_ld64_export_dynamic=0
6044 if test "$build" = "$host"; then
6050 # On Darwin, because of FAT library support, it is often possible to execute
6051 # exes from compatible archs even when the host differs from the build system.
6052 case "$build","$host" in
6053 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
6058 # If the configurer specified a minimum ld64 version to be supported, then use
6059 # that to determine feature support.
6060 if test x"${gcc_cv_ld64_version}" != x; then
6061 AC_MSG_CHECKING(ld64 specified version)
6062 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
6063 AC_MSG_RESULT($gcc_cv_ld64_major)
6064 if test "$gcc_cv_ld64_major" -ge 236; then
6065 gcc_cv_ld64_export_dynamic=1
6067 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
6068 # If the version was not specified, try to find it.
6069 AC_MSG_CHECKING(linker version)
6070 if test x"${gcc_cv_ld64_version}" = x; then
6071 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
6073 AC_MSG_RESULT($gcc_cv_ld64_version)
6075 AC_MSG_CHECKING(linker for -export_dynamic support)
6076 gcc_cv_ld64_export_dynamic=1
6077 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
6078 gcc_cv_ld64_export_dynamic=0
6080 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
6083 if test x"${gcc_cv_ld64_version}" != x; then
6084 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
6085 [Define to ld64 version.])
6088 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
6089 [Define to 1 if ld64 supports '-export_dynamic'.])
6096 AC_CACHE_CHECK(linker --as-needed support,
6097 gcc_cv_ld_as_needed,
6098 [gcc_cv_ld_as_needed=no
6099 gcc_cv_ld_as_needed_option='--as-needed'
6100 gcc_cv_ld_no_as_needed_option='--no-as-needed'
6101 if test $in_tree_ld = yes ; then
6102 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
6103 && test $in_tree_ld_is_elf = yes; then
6104 gcc_cv_ld_as_needed=yes
6105 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
6106 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6107 gcc_cv_ld_no_as_needed_option='--pop-state'
6110 elif test x$gcc_cv_ld != x; then
6111 # Check if linker supports --as-needed and --no-as-needed options
6112 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
6113 gcc_cv_ld_as_needed=yes
6114 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
6115 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
6116 && echo "$ld_ver" | grep GNU > /dev/null \
6117 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
6118 # Use these options only when both ld.bfd and ld.gold support
6119 # --push-state/--pop-state, which unfortunately wasn't added
6121 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6122 gcc_cv_ld_no_as_needed_option='--pop-state'
6125 case "$target:$gnu_ld" in
6127 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6129 gcc_cv_ld_as_needed=yes
6130 gcc_cv_ld_as_needed_option="-z ignore"
6131 gcc_cv_ld_no_as_needed_option="-z record"
6135 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6136 # dl_iterate_phdr, i.e. since Solaris 11.
6138 *-*-solaris2.1[[1-9]]*)
6140 i?86-*-* | x86_64-*-*)
6141 if echo "$ld_ver" | grep GNU > /dev/null; then
6142 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6143 gcc_cv_ld_as_needed=no
6149 gcc_cv_ld_as_needed=no
6153 if test x"$gcc_cv_ld_as_needed" = xyes; then
6154 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6155 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6156 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6157 [Define to the linker option to ignore unused dependencies.])
6158 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6159 [Define to the linker option to keep unused dependencies.])
6162 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6163 saved_LDFLAGS="$LDFLAGS"
6164 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6165 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6166 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6167 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6169 LDFLAGS="$saved_LDFLAGS"
6170 if test "x$gcc_cv_ld_clearcap" = xyes; then
6171 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6172 [Define if the linker supports clearing hardware capabilities via mapfile.])
6173 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6175 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6181 emul_name="-melf32lppc"
6184 emul_name="-melf32ppc"
6187 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6189 [gcc_cv_ld_ppc_attr=no
6190 if test x"$ld_is_gold" = xyes; then
6191 gcc_cv_ld_ppc_attr=yes
6192 elif test $in_tree_ld = yes ; then
6193 if test "$gcc_cv_gld_major_version" -eq 2 \
6194 -a "$gcc_cv_gld_minor_version" -ge 28 \
6195 -o "$gcc_cv_gld_major_version" -gt 2; then
6196 gcc_cv_ld_ppc_attr=yes
6198 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6199 # check that merging the long double .gnu_attribute doesn't warn
6200 cat > conftest1.s <<EOF
6203 cat > conftest2.s <<EOF
6206 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6207 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6208 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6209 && test ! -s conftest.err; then
6210 gcc_cv_ld_ppc_attr=yes
6212 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6215 if test x$gcc_cv_ld_ppc_attr = xyes; then
6216 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6217 [Define if your PowerPC linker has .gnu.attributes long double support.])
6222 case "$target:$tm_file" in
6223 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6226 emul_name="-melf64lppc"
6229 emul_name="-melf64ppc"
6232 emul_name="-melf64ppc_fbsd"
6235 AC_CACHE_CHECK(linker support for omitting dot symbols,
6236 gcc_cv_ld_no_dot_syms,
6237 [gcc_cv_ld_no_dot_syms=no
6238 if test x"$ld_is_gold" = xyes; then
6239 gcc_cv_ld_no_dot_syms=yes
6240 elif test $in_tree_ld = yes ; then
6241 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6242 gcc_cv_ld_no_dot_syms=yes
6244 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6245 cat > conftest1.s <<EOF
6249 cat > conftest2.s <<EOF
6250 .section ".opd","aw"
6255 .quad .LEfoo,.TOC.@tocbase,0
6261 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6262 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6263 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6264 gcc_cv_ld_no_dot_syms=yes
6266 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6269 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6270 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6271 [Define if your PowerPC64 linker only needs function descriptor syms.])
6274 AC_CACHE_CHECK(linker large toc support,
6275 gcc_cv_ld_large_toc,
6276 [gcc_cv_ld_large_toc=no
6277 if test x"$ld_is_gold" = xyes; then
6278 gcc_cv_ld_large_toc=yes
6279 elif test $in_tree_ld = yes ; then
6280 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6281 gcc_cv_ld_large_toc=yes
6283 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6284 cat > conftest.s <<EOF
6285 .section ".tbss","awT",@nobits
6291 addis 9,13,ie0@got@tprel@ha
6292 ld 9,ie0@got@tprel@l(9)
6294 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6295 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6296 gcc_cv_ld_large_toc=yes
6298 rm -f conftest conftest.o conftest.s
6301 if test x"$gcc_cv_ld_large_toc" = xyes; then
6302 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6303 [Define if your PowerPC64 linker supports a large TOC.])
6306 AC_CACHE_CHECK(linker toc pointer alignment,
6307 gcc_cv_ld_toc_align,
6308 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6309 cat > conftest.s <<EOF
6314 .section .data.rel.ro,"aw",@progbits
6319 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6320 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6321 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6323 rm -f conftest conftest.o conftest.s
6326 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6327 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6328 [Define to .TOC. alignment forced by your linker.])
6335 AC_CACHE_CHECK(linker large toc support,
6336 gcc_cv_ld_large_toc,
6337 [gcc_cv_ld_large_toc=no
6338 if test x$gcc_cv_as != x ; then
6339 cat > conftest.s <<EOF
6349 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6350 gcc_cv_ld_large_toc=yes
6352 rm -f conftest conftest.o conftest.s
6355 if test x"$gcc_cv_ld_large_toc" = xyes; then
6356 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6357 [Define if your PowerPC64 linker supports a large TOC.])
6362 AC_CACHE_CHECK(linker --build-id support,
6364 [gcc_cv_ld_buildid=no
6365 if test $in_tree_ld = yes ; then
6366 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6367 "$gcc_cv_gld_minor_version" -ge 18 -o \
6368 "$gcc_cv_gld_major_version" -gt 2 \
6369 && test $in_tree_ld_is_elf = yes; then
6370 gcc_cv_ld_buildid=yes
6372 elif test x$gcc_cv_ld != x; then
6373 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6374 gcc_cv_ld_buildid=yes
6377 if test x"$gcc_cv_ld_buildid" = xyes; then
6378 AC_DEFINE(HAVE_LD_BUILDID, 1,
6379 [Define if your linker supports --build-id.])
6382 AC_ARG_ENABLE(linker-build-id,
6383 [AS_HELP_STRING([--enable-linker-build-id],
6384 [compiler will always pass --build-id to linker])],
6386 enable_linker_build_id=no)
6388 if test x"$enable_linker_build_id" = xyes; then
6389 if test x"$gcc_cv_ld_buildid" = xyes; then
6390 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6391 [Define if gcc should always pass --build-id to linker.])
6393 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6397 # In binutils 2.21, GNU ld gained support for new emulations fully
6398 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6399 AC_CACHE_CHECK(linker *_sol2 emulation support,
6400 gcc_cv_ld_sol2_emulation,
6401 [gcc_cv_ld_sol2_emulation=no
6402 if test $in_tree_ld = yes ; then
6403 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6404 "$gcc_cv_gld_minor_version" -ge 21 -o \
6405 "$gcc_cv_gld_major_version" -gt 2 \
6406 && test $in_tree_ld_is_elf = yes; then
6407 gcc_cv_ld_sol2_emulation=yes
6409 elif test x$gcc_cv_ld != x; then
6410 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6411 grep _sol2 > /dev/null; then
6412 gcc_cv_ld_sol2_emulation=yes
6415 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6416 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6417 [Define if your linker supports the *_sol2 emulations.])
6420 AC_CACHE_CHECK(linker --sysroot support,
6422 [gcc_cv_ld_sysroot=no
6423 if test $in_tree_ld = yes ; then
6424 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6425 gcc_cv_ld_sysroot=yes
6427 elif test x$gcc_cv_ld != x; then
6428 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6429 gcc_cv_ld_sysroot=yes
6432 if test x"$gcc_cv_ld_sysroot" = xyes; then
6433 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6434 [Define if your linker supports --sysroot.])
6439 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6440 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6441 gcc_cv_solaris_crts,
6442 [gcc_cv_solaris_crts=no
6443 if test x$host != x$target; then
6444 if test "x$with_sysroot" = xyes; then
6445 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6447 target_sysroot="${with_sysroot}"
6450 target_libdir="$target_sysroot/usr/lib"
6451 # At the time they were added, gcrt1.o became a symlink for backwards
6452 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6454 i?86-*-solaris2* | x86_64-*-solaris2*)
6455 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6458 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6463 if test x$gcc_cv_solaris_crts = xyes; then
6464 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6465 [Define if the system-provided CRTs are present on Solaris.])
6468 AC_ARG_ENABLE(libssp,
6469 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6470 [case "${enableval}" in
6474 AC_MSG_ERROR([unknown libssp setting $enableval])
6478 # Test for stack protector support in target C library.
6479 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6480 gcc_cv_libc_provides_ssp,
6481 [gcc_cv_libc_provides_ssp=no
6482 if test "x$enable_libssp" = "xno"; then
6483 gcc_cv_libc_provides_ssp=yes
6484 elif test "x$enable_libssp" = "xyes"; then
6485 gcc_cv_libc_provides_ssp=no
6489 # All versions of musl provide stack protector
6490 gcc_cv_libc_provides_ssp=yes;;
6491 *-*-linux* | *-*-kfreebsd*-gnu)
6492 # glibc 2.4 and later provides __stack_chk_fail and
6493 # either __stack_chk_guard, or TLS access to stack guard canary.
6494 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6495 [if test -f $target_header_dir/features.h \
6496 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6497 $target_header_dir/features.h > /dev/null; then
6498 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6499 $target_header_dir/features.h > /dev/null && \
6500 test -f $target_header_dir/bits/uClibc_config.h && \
6501 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6502 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6503 gcc_cv_libc_provides_ssp=yes
6505 # all versions of Bionic support stack protector
6506 elif test -f $target_header_dir/sys/cdefs.h \
6507 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6508 $target_header_dir/sys/cdefs.h > /dev/null; then
6509 gcc_cv_libc_provides_ssp=yes
6513 # Avoid complicated tests (see
6514 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6515 # simply assert that glibc does provide this, which is true for all
6516 # realistically usable GNU/Hurd configurations.
6517 # All supported versions of musl provide it as well
6518 gcc_cv_libc_provides_ssp=yes;;
6519 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6520 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6521 [echo "no __stack_chk_fail on this target"])
6523 *) gcc_cv_libc_provides_ssp=no ;;
6527 if test x$gcc_cv_libc_provides_ssp = xyes; then
6528 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6529 [Define if your target C library provides stack protector support])
6532 # Check whether --enable-default-ssp was given.
6533 AC_ARG_ENABLE(default-ssp,
6534 [AS_HELP_STRING([--enable-default-ssp],
6535 [enable Stack Smashing Protection as default])],[
6536 if test x$gcc_cv_libc_provides_ssp = xyes; then
6538 ia64*-*-*) enable_default_ssp=no ;;
6539 *) enable_default_ssp=$enableval ;;
6542 enable_default_ssp=no
6544 enable_default_ssp=no)
6545 if test x$enable_default_ssp = xyes ; then
6546 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6547 [Define if your target supports default stack protector and it is enabled.])
6549 AC_SUBST([enable_default_ssp])
6551 # Test for <sys/sdt.h> on the target.
6552 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6553 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6555 if test -f $target_header_dir/sys/sdt.h; then
6557 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6558 [Define if your target C library provides sys/sdt.h])
6560 AC_MSG_RESULT($have_sys_sdt_h)
6562 # Check if TFmode long double should be used by default or not.
6563 # Some glibc targets used DFmode long double, but with glibc 2.4
6564 # and later they can use TFmode.
6566 powerpc*-*-linux* | \
6570 AC_ARG_WITH(long-double-128,
6571 [AS_HELP_STRING([--with-long-double-128],
6572 [use 128-bit long double by default])],
6573 gcc_cv_target_ldbl128="$with_long_double_128", [
6575 s390*-*-linux-musl*)
6576 gcc_cv_target_ldbl128=yes
6578 powerpc*-*-linux-musl*)
6579 gcc_cv_target_ldbl128=no
6582 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6583 [gcc_cv_target_ldbl128=no
6584 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6585 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6586 && gcc_cv_target_ldbl128=yes
6594 if test x$gcc_cv_target_ldbl128 = xyes; then
6595 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6596 [Define if TFmode long double should be the default])
6599 # Check if TFmode long double target should use the IBM extended double or IEEE
6600 # 128-bit floating point formats if long doubles are 128-bits long. The long
6601 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6602 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6604 AC_ARG_WITH([long-double-format],
6605 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6606 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6607 case "$target:$with_long_double_format" in
6608 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6611 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6612 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6614 power7 | power8 | power9 | power1*)
6618 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6619 supported if the default cpu is power7 or newer])
6620 with_long_double_format=""
6624 powerpc64*-*-linux*:*)
6625 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6626 with_long_double_format=""
6629 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6630 on 64-bit PowerPC VSX Linux systems])
6631 with_long_double_format=""
6636 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6637 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6638 gcc_cv_libc_provides_hwcap_in_tcb=no
6641 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6644 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6645 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6646 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6649 # Check if the target LIBC handles PT_GNU_STACK.
6650 gcc_cv_libc_gnustack=unknown
6653 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6656 if test x$gcc_cv_libc_gnustack = xyes; then
6657 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6658 [Define if your target C Library properly handles PT_GNU_STACK])
6661 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6662 gcc_cv_target_dl_iterate_phdr=unknown
6665 # <link.h> needs both a dl_iterate_phdr declaration and support for
6666 # compilation with largefile support.
6667 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6668 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6669 gcc_cv_target_dl_iterate_phdr=yes
6671 gcc_cv_target_dl_iterate_phdr=no
6674 *-*-dragonfly* | *-*-freebsd*)
6675 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6676 gcc_cv_target_dl_iterate_phdr=yes
6678 gcc_cv_target_dl_iterate_phdr=no
6682 gcc_cv_target_dl_iterate_phdr=yes
6685 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6686 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6687 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6688 [Define if your target C library provides the `dl_iterate_phdr' function.])
6690 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6692 # We no longer support different GC mechanisms. Emit an error if
6693 # the user configures with --with-gc.
6695 [AS_HELP_STRING([--with-gc={page,zone}],
6696 [this option is not supported anymore. It used to choose
6697 the garbage collection mechanism to use with the compiler])],
6698 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6701 # Libraries to use on the host. This will normally be set by the top
6702 # level Makefile. Here we simply capture the value for our Makefile.
6703 if test -z "${HOST_LIBS+set}"; then
6708 # Use the system's zlib library.
6711 dnl Very limited version of automake's enable-maintainer-mode
6713 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6714 dnl maintainer-mode is disabled by default
6715 AC_ARG_ENABLE(maintainer-mode,
6716 [AS_HELP_STRING([--enable-maintainer-mode],
6717 [enable make rules and dependencies not useful
6718 (and sometimes confusing) to the casual installer])],
6719 maintainer_mode=$enableval,
6722 AC_MSG_RESULT($maintainer_mode)
6724 if test "$maintainer_mode" = "yes"; then
6731 dnl Whether to prevent multiple front-ends from linking at the same time
6733 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6734 AC_ARG_ENABLE(link-mutex,
6735 [AS_HELP_STRING([--enable-link-mutex],
6736 [avoid linking multiple front-ends at once to avoid thrashing
6737 on the build machine])],
6738 do_link_mutex=$enableval,
6740 AC_MSG_RESULT($do_link_mutex)
6742 if test "$do_link_mutex" = "yes"; then
6747 AC_SUBST(DO_LINK_MUTEX)
6749 dnl Whether to prevent multiple GCC front-ends from linking at the same time
6751 AC_MSG_CHECKING([whether to serialize linking of multiple front-ends])
6752 AC_ARG_ENABLE(link-serialization,
6753 [AS_HELP_STRING([--enable-link-serialization],
6754 [avoid linking multiple GCC front-ends at once using make
6755 dependencies to avoid thrashing on the build machine])],
6756 do_link_serialization=$enableval,
6757 do_link_serialization=no)
6758 AC_MSG_RESULT($do_link_serialization)
6760 case "$do_link_serialization" in
6762 DO_LINK_SERIALIZATION=1;;
6763 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]])
6764 DO_LINK_SERIALIZATION=$do_link_serialization;;
6766 DO_LINK_SERIALIZATION=;;
6768 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;;
6770 AC_SUBST(DO_LINK_SERIALIZATION)
6776 # Make empty files to contain the specs and options for each language.
6777 # Then add #include lines to for a compiler that has specs and/or options.
6783 # These (without "all_") are set in each config-lang.in.
6784 # `language' must be a single word so is spelled singularly.
6787 all_outputs='Makefile'
6788 # List of language configure and makefile fragments.
6789 all_lang_configurefrags=
6791 # Additional files for gengtype
6792 all_gtfiles="$target_gtfiles"
6794 # These are the languages that are set in --enable-languages,
6795 # and are available in the GCC tree.
6796 all_selected_languages=
6798 # Add the language fragments.
6799 # Languages are added via two mechanisms. Some information must be
6800 # recorded in makefile variables, these are defined in config-lang.in.
6801 # We accumulate them and plug them into the main Makefile.
6802 # The other mechanism is a set of hooks for each of the main targets
6803 # like `clean', `install', etc.
6805 language_hooks="Make-hooks"
6807 for lang in ${srcdir}/*/config-lang.in
6810 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6812 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6813 if test "x$lang_alias" = x
6815 echo "$lang doesn't set \$language." 1>&2
6818 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6819 subdirs="$subdirs $subdir"
6821 # $gcc_subdir is where the gcc integration files are to be found
6822 # for a language, both for internal compiler purposes (compiler
6823 # sources implementing front-end to GCC tree converters), and for
6824 # build infrastructure purposes (Make-lang.in, etc.)
6826 # This will be <subdir> (relative to $srcdir) if a line like
6827 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6828 # is found in <langdir>/config-lang.in, and will remain <langdir>
6831 # Except for the language alias (fetched above), the regular
6832 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6833 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6834 # only this and the language alias.
6836 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6837 if [ "$gcc_subdir" = "" ]; then
6838 gcc_subdir="$subdir"
6841 case ",$enable_languages," in
6843 all_selected_languages="$all_selected_languages $lang_alias"
6844 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6845 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6857 . ${srcdir}/$gcc_subdir/config-lang.in
6858 if test "x$language" = x
6860 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6865 case ",$enable_languages," in
6868 for i in $subdir_requires; do
6869 test -f "${srcdir}/$i/config-lang.in" && continue
6877 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
6878 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6879 if test -f $srcdir/$gcc_subdir/lang.opt; then
6880 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6881 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6883 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6884 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6886 all_languages="$all_languages $language"
6887 all_compilers="$all_compilers $compilers"
6888 all_outputs="$all_outputs $outputs"
6889 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6890 case ",$enable_languages," in
6892 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6894 AC_SUBST(enable_lto)
6901 for language in $all_selected_languages
6903 check_languages="$check_languages check-$language"
6907 for language in $all_selected_languages
6909 selftest_languages="$selftest_languages selftest-$language"
6912 # We link each language in with a set of hooks, reached indirectly via
6913 # lang.${target}. Only do so for selected languages.
6917 target_list="all.cross start.encap rest.encap tags \
6918 install-common install-man install-info install-pdf install-html dvi \
6919 pdf html uninstall info man srcextra srcman srcinfo \
6920 mostlyclean clean distclean maintainer-clean install-plugin"
6922 for t in $target_list
6925 for lang in $all_selected_languages
6929 echo "lang.$t: $x" >> Make-hooks
6932 echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks
6933 echo "SERIAL_LIST =" >> Make-hooks
6934 echo else >> Make-hooks
6938 serialization_languages=c
6939 for lang in $all_selected_languages
6941 test $lang = c && continue
6942 if test $lang = lto; then
6943 serialization_languages="$serialization_languages lto1 lto2"
6945 serialization_languages="$serialization_languages $lang"
6948 for lang in $serialization_languages
6950 test $lang = c && continue
6951 lang_cnt=`expr $lang_cnt + 1`
6952 lang_list=" $prev$lang_list"
6955 echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks
6956 echo endif >> Make-hooks
6957 echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks
6958 echo "INDEX.c = 0" >> Make-hooks
6960 for lang in $serialization_languages
6962 test $lang = c && continue
6963 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks
6964 echo "INDEX.$lang = $lang_idx" >> Make-hooks
6965 lang_cnt=`expr $lang_cnt - 1`
6966 lang_idx=`expr $lang_idx + 1`
6970 # Option include files
6973 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6974 option_includes="option-includes.mk"
6975 AC_SUBST_FILE(option_includes)
6983 echo "dir ." > .gdbinit
6984 echo "dir ${srcdir}" >> .gdbinit
6985 if test x$gdb_needs_out_file_path = xyes
6987 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6989 if test "x$subdirs" != x; then
6992 echo "dir ${srcdir}/$s" >> .gdbinit
6995 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6996 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6998 # Put a breakpoint on __asan_report_error to help with debugging buffer
7001 *-fsanitize=address*)
7002 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
7006 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
7007 AC_SUBST(gcc_tooldir)
7010 # Find a directory in which to install a shared libgcc.
7012 AC_ARG_ENABLE(version-specific-runtime-libs,
7013 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
7014 [specify that runtime libraries should be
7015 installed in a compiler-specific directory])])
7017 # Substitute configuration variables
7020 AC_SUBST(all_compilers)
7021 AC_SUBST(all_gtfiles)
7022 AC_SUBST(all_lang_configurefrags)
7023 AC_SUBST(all_lang_makefrags)
7024 AC_SUBST(all_languages)
7025 AC_SUBST(all_selected_languages)
7026 AC_SUBST(build_exeext)
7027 AC_SUBST(build_install_headers_dir)
7028 AC_SUBST(build_xm_file_list)
7029 AC_SUBST(build_xm_include_list)
7030 AC_SUBST(build_xm_defines)
7031 AC_SUBST(build_file_translate)
7032 AC_SUBST(check_languages)
7033 AC_SUBST(selftest_languages)
7034 AC_SUBST(cpp_install_dir)
7035 AC_SUBST(xmake_file)
7036 AC_SUBST(tmake_file)
7037 AC_SUBST(TM_ENDIAN_CONFIG)
7038 AC_SUBST(TM_MULTILIB_CONFIG)
7039 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
7040 AC_SUBST(extra_gcc_objs)
7041 AC_SUBST(user_headers_inc_next_pre)
7042 AC_SUBST(user_headers_inc_next_post)
7043 AC_SUBST(extra_headers_list)
7044 AC_SUBST(extra_objs)
7045 AC_SUBST(extra_programs)
7046 AC_SUBST(float_h_file)
7047 AC_SUBST(gcc_config_arguments)
7048 AC_SUBST(gcc_gxx_include_dir)
7049 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
7050 AC_SUBST(host_exeext)
7051 AC_SUBST(host_xm_file_list)
7052 AC_SUBST(host_xm_include_list)
7053 AC_SUBST(host_xm_defines)
7054 AC_SUBST(out_host_hook_obj)
7056 AC_SUBST(lang_opt_files)
7057 AC_SUBST(lang_specs_files)
7058 AC_SUBST(lang_tree_files)
7059 AC_SUBST(local_prefix)
7061 AC_SUBST(objc_boehm_gc)
7063 AC_SUBST(out_object_file)
7064 AC_SUBST(common_out_file)
7065 AC_SUBST(common_out_object_file)
7066 AC_SUBST(tm_file_list)
7067 AC_SUBST(tm_include_list)
7068 AC_SUBST(tm_defines)
7069 AC_SUBST(tm_p_file_list)
7070 AC_SUBST(tm_p_include_list)
7071 AC_SUBST(tm_d_file_list)
7072 AC_SUBST(tm_d_include_list)
7073 AC_SUBST(xm_file_list)
7074 AC_SUBST(xm_include_list)
7075 AC_SUBST(xm_defines)
7076 AC_SUBST(use_gcc_stdint)
7077 AC_SUBST(c_target_objs)
7078 AC_SUBST(cxx_target_objs)
7079 AC_SUBST(fortran_target_objs)
7080 AC_SUBST(d_target_objs)
7081 AC_SUBST(target_cpu_default)
7083 AC_SUBST_FILE(language_hooks)
7086 if test x${build} = x${host} ; then
7087 if test x${host} = x${target} ; then
7088 echo "Links are now set up to build a native compiler for ${target}." 1>&2
7090 echo "Links are now set up to build a cross-compiler" 1>&2
7091 echo " from ${host} to ${target}." 1>&2
7094 if test x${host} = x${target} ; then
7095 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
7096 echo " for ${target}." 1>&2
7098 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
7099 echo " from ${host} to ${target}." 1>&2
7103 AC_ARG_VAR(GMPLIBS,[How to link GMP])
7104 AC_ARG_VAR(GMPINC,[How to find GMP include files])
7106 AC_ARG_VAR(ISLLIBS,[How to link isl])
7107 AC_ARG_VAR(ISLINC,[How to find isl include files])
7108 if test "x${ISLLIBS}" != "x" ; then
7109 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
7113 AC_SUBST(pluginlibs)
7114 AC_SUBST(enable_plugin)
7115 if test x"$enable_plugin" = x"yes"; then
7116 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
7120 # Enable --enable-host-shared
7121 AC_ARG_ENABLE(host-shared,
7122 [AS_HELP_STRING([--enable-host-shared],
7123 [build host code as shared libraries])],
7124 [PICFLAG=-fPIC], [PICFLAG=])
7125 AC_SUBST(enable_host_shared)
7129 AC_ARG_ENABLE(libquadmath-support,
7130 [AS_HELP_STRING([--disable-libquadmath-support],
7131 [disable libquadmath support for Fortran])],
7132 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
7133 ENABLE_LIBQUADMATH_SUPPORT=yes)
7134 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
7135 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
7136 [Define to 1 to enable libquadmath support])
7140 # Specify what hash style to use by default.
7141 AC_ARG_WITH([linker-hash-style],
7142 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
7143 [specify the linker hash style])],
7144 [case x"$withval" in
7146 LINKER_HASH_STYLE=sysv
7149 LINKER_HASH_STYLE=gnu
7152 LINKER_HASH_STYLE=both
7155 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
7158 [LINKER_HASH_STYLE=''])
7159 if test x"${LINKER_HASH_STYLE}" != x; then
7160 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
7161 [The linker hash style])
7164 # Specify what should be the default of -fdiagnostics-color option.
7165 AC_ARG_WITH([diagnostics-color],
7166 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
7167 [specify the default of -fdiagnostics-color option
7168 auto-if-env stands for -fdiagnostics-color=auto if
7169 GCC_COLOR environment variable is present and
7170 -fdiagnostics-color=never otherwise])],
7171 [case x"$withval" in
7173 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
7176 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
7179 DIAGNOSTICS_COLOR_DEFAULT=-1
7182 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7185 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7188 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7189 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7190 [The default for -fdiagnostics-color option])
7192 # Specify what should be the default of -fdiagnostics-urls option.
7193 AC_ARG_WITH([diagnostics-urls],
7194 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7195 [specify the default of -fdiagnostics-urls option
7196 auto-if-env stands for -fdiagnostics-urls=auto if
7197 GCC_URLS or TERM_URLS environment variable is present and
7198 -fdiagnostics-urls=never otherwise])],
7199 [case x"$withval" in
7201 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7204 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7207 DIAGNOSTICS_URLS_DEFAULT=-1
7210 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7213 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7216 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7217 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7218 [The default for -fdiagnostics-urls option])
7220 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7221 # of jit/jit-playback.c.
7222 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7223 echo "gcc_driver_version: ${gcc_driver_version}"
7224 cat > gcc-driver-name.h <<EOF
7225 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7228 # Check whether --enable-default-pie was given.
7229 AC_ARG_ENABLE(default-pie,
7230 [AS_HELP_STRING([--enable-default-pie],
7231 [enable Position Independent Executable as default])],
7232 enable_default_pie=$enableval,
7233 enable_default_pie=no)
7234 if test x$enable_default_pie = xyes ; then
7235 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7236 [Define if your target supports default PIE and it is enabled.])
7238 AC_SUBST([enable_default_pie])
7240 # Check if -fno-PIE works.
7241 AC_CACHE_CHECK([for -fno-PIE option],
7243 [saved_CXXFLAGS="$CXXFLAGS"
7244 CXXFLAGS="$CXXFLAGS -fno-PIE"
7245 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7246 [gcc_cv_c_no_fpie=yes],
7247 [gcc_cv_c_no_fpie=no])
7248 CXXFLAGS="$saved_CXXFLAGS"])
7249 if test "$gcc_cv_c_no_fpie" = "yes"; then
7250 NO_PIE_CFLAGS="-fno-PIE"
7252 AC_SUBST([NO_PIE_CFLAGS])
7254 # Check if -no-pie works.
7255 AC_CACHE_CHECK([for -no-pie option],
7257 [saved_LDFLAGS="$LDFLAGS"
7258 LDFLAGS="$LDFLAGS -no-pie"
7259 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7260 [gcc_cv_no_pie=yes],
7262 LDFLAGS="$saved_LDFLAGS"])
7263 if test "$gcc_cv_no_pie" = "yes"; then
7264 NO_PIE_FLAG="-no-pie"
7266 AC_SUBST([NO_PIE_FLAG])
7268 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7269 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7270 case x$enable_languages in
7277 AC_SUBST(CET_HOST_FLAGS)
7279 # Check linker supports '-z bndplt'
7280 ld_bndplt_support=no
7281 AC_MSG_CHECKING(linker -z bndplt option)
7282 if test x"$ld_is_gold" = xno; then
7283 if test $in_tree_ld = yes ; then
7284 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7285 ld_bndplt_support=yes
7287 elif test x$gcc_cv_ld != x; then
7288 # Check if linker supports -a bndplt option
7289 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7290 ld_bndplt_support=yes
7294 if test x"$ld_bndplt_support" = xyes; then
7295 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7296 [Define if your linker supports -z bndplt])
7298 AC_MSG_RESULT($ld_bndplt_support)
7300 # Check linker supports '--push-state'/'--pop-state'
7301 ld_pushpopstate_support=no
7302 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7303 if test x"$ld_is_gold" = xno; then
7304 if test $in_tree_ld = yes ; then
7305 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7306 ld_pushpopstate_support=yes
7308 elif test x$gcc_cv_ld != x; then
7309 # Check if linker supports --push-state/--pop-state options
7310 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7311 ld_pushpopstate_support=yes
7315 if test x"$ld_pushpopstate_support" = xyes; then
7316 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7317 [Define if your linker supports --push-state/--pop-state])
7319 AC_MSG_RESULT($ld_pushpopstate_support)
7321 # Configure the subdirectories
7322 # AC_CONFIG_SUBDIRS($subdirs)
7324 # Create the Makefile
7325 # and configure language subdirectories
7326 AC_CONFIG_FILES($all_outputs)
7328 AC_CONFIG_COMMANDS([default],
7330 case ${CONFIG_HEADERS} in
7331 *auto-host.h:config.in*)
7334 # Make sure all the subdirs exist.
7335 for d in $subdirs doc build common c-family
7337 test -d $d || mkdir $d
7340 [subdirs='$subdirs'])