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 # -------------------------
1106 # Checks for other programs
1107 # -------------------------
1111 # Find some useful tools
1113 # We need awk to create options.c and options.h.
1114 # Bail out if it's missing.
1116 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1123 AC_SUBST(ranlib_flags)
1127 # See if cmp has --ignore-initial.
1128 gcc_AC_PROG_CMP_IGNORE_INITIAL
1130 # See if we have the mktemp command.
1131 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1133 # See if makeinfo has been installed and is modern enough
1134 # that we can use it.
1135 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1136 [GNU texinfo.* \([0-9][0-9.]*\)],
1137 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1138 if test $gcc_cv_prog_makeinfo_modern = no; then
1140 *** Makeinfo is missing or too old.
1141 *** Info documentation will not be built.])
1146 AC_SUBST(BUILD_INFO)
1148 # Is pod2man recent enough to regenerate manpages?
1149 AC_MSG_CHECKING([for recent Pod::Man])
1150 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1152 GENERATED_MANPAGES=generated-manpages
1157 AC_SUBST(GENERATED_MANPAGES)
1159 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1162 dnl Don't use AC_PROG_LEX; we insist on flex.
1163 dnl LEXLIB is not useful in gcc.
1164 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1167 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1169 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1170 # check for build == host before using them.
1173 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1174 && test -d ../binutils ; then
1175 NM='${objdir}/../binutils/nm-new'
1177 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1181 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1182 && test -d ../binutils ; then
1183 AR='${objdir}/../binutils/ar'
1185 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1188 # The jit documentation looks better if built with sphinx, but can be
1189 # built with texinfo if sphinx is not available.
1190 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1191 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1193 # --------------------
1194 # Checks for C headers
1195 # --------------------
1197 # Need to reject headers which give warnings, so that the -Werror bootstrap
1198 # works later. *sigh* This needs to come before all header checks.
1205 AC_HEADER_TIOCGWINSZ
1206 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1207 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1208 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1209 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1211 # Check for thread headers.
1212 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1213 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1215 # These tests can't be done till we know if we have limits.h.
1219 # ----------------------
1220 # Checks for C++ headers
1221 # ----------------------
1223 dnl Autoconf will give an error in the configure script if there is no
1224 dnl C++ preprocessor. Hack to prevent that.
1225 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1227 m4_popdef([AC_MSG_ERROR])[]dnl
1229 AC_CHECK_HEADERS(unordered_map)
1230 AC_CHECK_HEADERS(tr1/unordered_map)
1231 AC_CHECK_HEADERS(ext/hash_map)
1234 # Dependency checking.
1238 AC_CONFIG_COMMANDS([gccdepdir],[
1239 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1240 for lang in $subdirs c-family common analyzer
1242 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1243 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1245 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1252 # These libraries may be used by collect2.
1253 # We may need a special search path to get them linked.
1254 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1256 for libs in '' -lld -lmld \
1257 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1258 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1261 AC_TRY_LINK_FUNC(ldopen,
1262 [gcc_cv_collect2_libs="$libs"; break])
1265 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1266 case $gcc_cv_collect2_libs in
1268 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1270 AC_SUBST(COLLECT2_LIBS)
1272 # When building Ada code on Alpha, we need exc_resume which is usually in
1273 # -lexc. So test for it.
1276 AC_SEARCH_LIBS(exc_resume, exc)
1279 AC_SUBST(GNAT_LIBEXC)
1281 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1284 AC_SEARCH_LIBS(kstat_open, kstat)
1285 EXTRA_GCC_LIBS="$LIBS"
1287 AC_SUBST(EXTRA_GCC_LIBS)
1289 # Some systems put ldexp and frexp in libm instead of libc; assume
1290 # they're both in the same place. jcf-dump needs them.
1293 AC_SEARCH_LIBS(ldexp, m)
1298 # Some systems need dlopen
1301 AC_SEARCH_LIBS(dlopen, dl)
1306 # Use <inttypes.h> only if it exists,
1307 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1309 AC_MSG_CHECKING(for inttypes.h)
1310 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1311 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1312 [[#define __STDC_FORMAT_MACROS
1313 #include <sys/types.h>
1314 #include <inttypes.h>]],
1319 [gcc_cv_header_inttypes_h=yes],
1320 [gcc_cv_header_inttypes_h=no])])
1321 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1322 if test $gcc_cv_header_inttypes_h = yes; then
1323 AC_DEFINE(HAVE_INTTYPES_H, 1,
1324 [Define if you have a working <inttypes.h> header file.])
1327 # Look for the ZSTD package.
1330 AC_SUBST(ZSTD_INCLUDE)
1334 AC_SUBST(ZSTD_CPPFLAGS)
1335 AC_SUBST(ZSTD_LDFLAGS)
1337 [AS_HELP_STRING([--with-zstd=PATH],
1338 [specify prefix directory for installed zstd library.
1339 Equivalent to --with-zstd-include=PATH/include
1340 plus --with-zstd-lib=PATH/lib])])
1341 AC_ARG_WITH(zstd-include,
1342 [AS_HELP_STRING([--with-zstd-include=PATH],
1343 [specify directory for installed zstd include files])])
1344 AC_ARG_WITH(zstd-lib,
1345 [AS_HELP_STRING([--with-zstd-lib=PATH],
1346 [specify directory for the installed zstd library])])
1347 case "x$with_zstd" in
1353 *) ZSTD_INCLUDE=$with_zstd/include
1354 ZSTD_LIB=$with_zstd/lib
1358 if test "x$with_zstd" != xno; then
1359 if test "x$with_zstd_include" != x; then
1360 ZSTD_INCLUDE=$with_zstd_include
1362 if test "x$with_zstd_lib" != x; then
1363 ZSTD_LIB=$with_zstd_lib
1365 if test "x$ZSTD_INCLUDE" != x \
1366 && test "x$ZSTD_INCLUDE" != xno; then
1367 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE
1369 if test "x$ZSTD_LIB" != x \
1370 && test "x$ZSTD_LIB" != xno; then
1371 ZSTD_LDFLAGS=-L$ZSTD_LIB
1374 CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS"
1375 LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS"
1377 AC_MSG_CHECKING(for zstd.h)
1378 AC_CACHE_VAL(gcc_cv_header_zstd_h,
1379 # We require version 1.3.0 or later. This is the first version that has
1380 # ZSTD_getFrameContentSize.
1381 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1383 #if ZSTD_VERSION_NUMBER < 10300
1384 #error "need zstd 1.3.0 or better"
1386 [gcc_cv_header_zstd_h=yes],
1387 [gcc_cv_header_zstd_h=no])])
1388 AC_MSG_RESULT($gcc_cv_header_zstd_h)
1389 if test $gcc_cv_header_zstd_h = yes; then
1390 AC_DEFINE(HAVE_ZSTD_H, 1,
1391 [Define if you have a working <zstd.h> header file.])
1392 elif test "x$with_zstd" != x; then
1393 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5
1396 # LTO can use zstd compression algorithm
1399 AC_SEARCH_LIBS(ZSTD_compress, zstd)
1405 dnl Disabled until we have a complete test for buggy enum bitfields.
1406 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1408 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1409 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1410 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1411 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1412 putchar_unlocked putc_unlocked)
1413 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1414 popen sysconf strsignal getrusage nl_langinfo \
1415 gettimeofday mbstowcs wcswidth mmap setlocale \
1416 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2)
1418 if test x$ac_cv_func_mbstowcs = xyes; then
1419 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1420 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1426 [gcc_cv_func_mbstowcs_works=yes],
1427 [gcc_cv_func_mbstowcs_works=no],
1428 [gcc_cv_func_mbstowcs_works=yes])])
1429 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1430 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1431 [Define this macro if mbstowcs does not crash when its
1432 first argument is NULL.])
1436 AC_CHECK_TYPE(ssize_t, int)
1437 AC_CHECK_TYPE(caddr_t, char *)
1439 GCC_AC_FUNC_MMAP_BLACKLIST
1443 # Under VMS, vfork works very differently than on Unix. The standard test
1444 # won't work, and it isn't easily adaptable. It makes more sense to
1446 ac_cv_func_vfork_works=yes
1453 # Until we have in-tree GNU iconv:
1455 if test -f "$LTLIBICONV"; then
1456 LIBICONV_DEP=$LTLIBICONV
1458 AC_SUBST(LIBICONV_DEP)
1464 # We will need to find libiberty.h and ansidecl.h
1465 saved_CFLAGS="$CFLAGS"
1466 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1467 saved_CXXFLAGS="$CXXFLAGS"
1468 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1470 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1471 # normal autoconf function for these. But force definition of
1472 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1473 # basename handling in libiberty.h.
1474 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1475 #undef HAVE_DECL_BASENAME
1476 #define HAVE_DECL_BASENAME 1
1477 #include "ansidecl.h"
1478 #include "system.h"])
1480 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1481 madvise stpcpy strnlen strsignal strverscmp \
1482 strtol strtoul strtoll strtoull setenv unsetenv \
1483 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1484 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1485 #include "ansidecl.h"
1486 #include "system.h"])
1488 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1489 #include "ansidecl.h"
1491 #ifdef HAVE_SYS_RESOURCE_H
1492 #include <sys/resource.h>
1496 gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[
1497 #include "ansidecl.h"
1499 #ifdef HAVE_MALLOC_H
1504 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1505 #include "ansidecl.h"
1507 #ifdef HAVE_SYS_RESOURCE_H
1508 #include <sys/resource.h>
1510 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1511 [Define to `long' if <sys/resource.h> doesn't define.])])
1513 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1514 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1515 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1516 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1517 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1518 #include "ansidecl.h"
1527 gcc_AC_CHECK_DECLS(times, , ,[
1528 #include "ansidecl.h"
1530 #ifdef HAVE_SYS_TIMES_H
1531 #include <sys/times.h>
1535 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1536 #include "ansidecl.h"
1541 # More time-related stuff.
1542 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1543 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1544 #include "ansidecl.h"
1546 #ifdef HAVE_SYS_TIMES_H
1547 #include <sys/times.h>
1549 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1550 if test $ac_cv_struct_tms = yes; then
1551 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1552 [Define if <sys/times.h> defines struct tms.])
1555 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1556 # revisit after autoconf 2.50.
1557 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1558 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1559 #include "ansidecl.h"
1561 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1562 if test $gcc_cv_type_clock_t = yes; then
1563 AC_DEFINE(HAVE_CLOCK_T, 1,
1564 [Define if <time.h> defines clock_t.])
1567 # Check if F_SETLKW is supported by fcntl.
1568 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1569 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1570 #include <fcntl.h>]], [[
1576 return fcntl (1, F_SETLKW, &fl);]])],
1577 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1578 if test $ac_cv_f_setlkw = yes; then
1579 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1580 [Define if F_SETLKW supported by fcntl.])
1583 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1584 CFLAGS="$saved_CFLAGS"
1585 CXXFLAGS="$saved_CXXFLAGS"
1587 # mkdir takes a single argument on some systems.
1588 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1596 # With Setjmp/Longjmp based exception handling.
1597 AC_ARG_ENABLE(sjlj-exceptions,
1598 [AS_HELP_STRING([--enable-sjlj-exceptions],
1599 [arrange to use setjmp/longjmp exception handling])],
1602 if test $enableval != yes; then
1603 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1608 force_sjlj_exceptions=yes],
1611 force_sjlj_exceptions=yes
1615 force_sjlj_exceptions=yes
1619 force_sjlj_exceptions=no
1622 if test $force_sjlj_exceptions = yes; then
1623 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1624 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1625 [Define 0/1 to force the choice for exception handling model.])
1628 # --------------------------------------------------------
1629 # Build, host, and target specific configuration fragments
1630 # --------------------------------------------------------
1632 # Collect build-machine-specific information.
1633 . ${srcdir}/config.build || exit 1
1635 # Collect host-machine-specific information.
1636 . ${srcdir}/config.host || exit 1
1640 # Collect target-machine-specific information.
1641 . ${srcdir}/config.gcc || exit 1
1643 extra_objs="${host_extra_objs} ${extra_objs}"
1644 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1646 # Default the target-machine variables that were not explicitly set.
1647 if test x"$tm_file" = x
1648 then tm_file=$cpu_type/$cpu_type.h; fi
1650 if test x"$extra_headers" = x
1651 then extra_headers=; fi
1653 if test x$md_file = x
1654 then md_file=$cpu_type/$cpu_type.md; fi
1656 if test x$out_file = x
1657 then out_file=$cpu_type/$cpu_type.c; fi
1659 if test x"$tmake_file" = x
1660 then tmake_file=$cpu_type/t-$cpu_type
1663 # Support --enable-initfini-array.
1664 if test x$enable_initfini_array != xno; then
1665 tm_file="${tm_file} initfini-array.h"
1668 if test x"$dwarf2" = xyes
1669 then tm_file="$tm_file tm-dwarf2.h"
1672 # Say what files are being used for the output code and MD file.
1673 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1674 echo "Using \`$srcdir/config/$md_file' as machine description file."
1676 # If any of the xm_file variables contain nonexistent files, warn
1677 # about them and drop them.
1680 for x in $build_xm_file; do
1681 if test -f $srcdir/config/$x
1683 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1689 for x in $host_xm_file; do
1690 if test -f $srcdir/config/$x
1692 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1698 for x in $xm_file; do
1699 if test -f $srcdir/config/$x
1701 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1707 for f in $tm_file; do
1710 if test $count = ax; then
1711 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1713 echo "Using the following target machine macro files:"
1714 for f in $tm_file; do
1715 echo " $srcdir/config/$f"
1719 if test x$use_long_long_for_widest_fast_int = xyes; then
1720 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1721 [Define to 1 if the 'long long' type is wider than 'long' but still
1722 efficiently supported by the host hardware.])
1725 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1726 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1728 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1729 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1732 for f in $host_xm_file; do
1735 if test $count = a; then
1737 elif test $count = ax; then
1738 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1740 echo "Using the following host machine macro files:"
1741 for f in $host_xm_file; do
1742 echo " $srcdir/config/$f"
1745 echo "Using ${out_host_hook_obj} for host machine hooks."
1747 if test "$host_xm_file" != "$build_xm_file"; then
1749 for f in $build_xm_file; do
1752 if test $count = a; then
1754 elif test $count = ax; then
1755 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1757 echo "Using the following build machine macro files:"
1758 for f in $build_xm_file; do
1759 echo " $srcdir/config/$f"
1764 if test -n "$configured_native_system_header_dir"; then
1765 native_system_header_dir=$configured_native_system_header_dir
1767 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1768 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1772 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1773 gcc_cv_mcontext_underscores,
1774 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1775 #include <sys/cdefs.h>
1776 #include <sys/signal.h>
1777 #include <ucontext.h>
1778 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1780 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1781 if test $gcc_cv_mcontext_underscores = yes; then
1782 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1783 [mcontext_t fields start with __])
1792 # Check if a valid thread package
1793 case ${enable_threads} in
1796 target_thread_file='single'
1800 target_thread_file='single'
1802 aix | dce | lynx | mipssde | posix | rtems | \
1803 single | tpf | vxworks | win32)
1804 target_thread_file=${enable_threads}
1807 echo "${enable_threads} is an unknown thread package" 1>&2
1812 if test x${thread_file} = x; then
1813 # No thread file set by target-specific clauses in config.gcc,
1814 # so use file chosen by default logic above
1815 thread_file=${target_thread_file}
1823 if test x$enable___cxa_atexit = xyes || \
1824 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1825 if test x$host = x$target; then
1827 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1828 # keyed to flag_use_cxa_atexit
1836 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1837 [echo "__cxa_atexit can't be enabled on this target"])
1841 # We can't check for __cxa_atexit when building a cross, so assume
1845 if test x$use_cxa_atexit = xyes; then
1846 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1847 [Define if you want to use __cxa_atexit, rather than atexit, to
1848 register C++ destructors for local statics and global objects.
1849 This is essential for fully standards-compliant handling of
1850 destructors, but requires __cxa_atexit in libc.])
1854 # Look for a file containing extra machine modes.
1855 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1856 extra_modes_file='$(srcdir)'/config/${extra_modes}
1857 AC_SUBST(extra_modes_file)
1858 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1859 [Define to the name of a file containing a list of extra machine modes
1860 for this architecture.])
1863 # Convert extra_options into a form suitable for Makefile use.
1866 for f in $extra_options; do
1867 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1868 all_opt_files="$all_opt_files $srcdir/config/$f"
1870 AC_SUBST(extra_opt_files)
1872 # auto-host.h is the file containing items generated by autoconf and is
1873 # the first file included by config.h.
1874 # If host=build, it is correct to have bconfig include auto-host.h
1875 # as well. If host!=build, we are in error and need to do more
1876 # work to find out the build config parameters.
1877 if test x$host = x$build
1879 build_auto=auto-host.h
1880 HAVE_AUTO_BUILD='# '
1882 # We create a subdir, then run autoconf in the subdir.
1883 # To prevent recursion we set host and build for the new
1884 # invocation of configure to the build for this invocation
1891 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1892 *) realsrcdir=../${srcdir};;
1894 # Clearing GMPINC is necessary to prevent host headers being
1895 # used by the build compiler. Defining GENERATOR_FILE stops
1896 # system.h from including gmp.h.
1897 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1898 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1899 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1900 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1901 ${realsrcdir}/configure \
1902 --enable-languages=${enable_languages-all} \
1903 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \
1904 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \
1905 --target=$target_alias --host=$build_alias \
1906 --build=$build_alias || exit # retaining $tempdir
1908 # We just finished tests for the build machine, so rename
1909 # the file auto-build.h in the gcc directory.
1910 mv auto-host.h ../auto-build.h
1913 build_auto=auto-build.h
1916 AC_SUBST(build_subdir)
1917 AC_SUBST(HAVE_AUTO_BUILD)
1919 tm_file="${tm_file} defaults.h"
1920 tm_p_file="${tm_p_file} tm-preds.h"
1921 tm_d_file="${tm_d_file} defaults.h"
1922 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1923 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1924 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1925 # put this back in temporarily.
1926 xm_file="auto-host.h ansidecl.h ${xm_file}"
1933 # Compile in configure arguments.
1934 if test -f configargs.h ; then
1935 # Being re-configured.
1936 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1937 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1938 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1939 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1942 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1945 # Double all backslashes and backslash all quotes to turn
1946 # gcc_config_arguments into a C string.
1947 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1948 $gcc_config_arguments
1950 gcc_config_arguments_str=`cat conftest.out`
1953 cat > configargs.h <<EOF
1954 /* Generated automatically. */
1955 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1956 static const char thread_model[] = "$thread_file";
1958 static const struct {
1959 const char *name, *value;
1960 } configure_default_options[] = $configure_default_options;
1965 gcc_BASEVER=`cat $srcdir/BASE-VER`
1966 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1967 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1968 if test -f $srcdir/REVISION ; then
1969 gcc_REVISION=`cat $srcdir/REVISION`
1973 cat > plugin-version.h <<EOF
1974 #include "configargs.h"
1976 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1977 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1978 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1979 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1981 static char basever[] = "$gcc_BASEVER";
1982 static char datestamp[] = "$gcc_DATESTAMP";
1983 static char devphase[] = "$gcc_DEVPHASE";
1984 static char revision[] = "$gcc_REVISION";
1986 /* FIXME plugins: We should make the version information more precise.
1987 One way to do is to add a checksum. */
1989 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1991 configuration_arguments};
1995 # Determine what GCC version number to use in filesystem paths.
1998 # Internationalization
1999 ZW_GNU_GETTEXT_SISTER_DIR
2001 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
2002 # -liconv on the link line twice.
2003 case "$LIBINTL" in *$LIBICONV*)
2007 AC_ARG_ENABLE(secureplt,
2008 [AS_HELP_STRING([--enable-secureplt],
2009 [enable -msecure-plt by default for PowerPC])],
2012 AC_ARG_ENABLE(mingw-wildcard,
2013 [AS_HELP_STRING([--enable-mingw-wildcard],
2014 [Set whether to expand wildcard on command-line.
2015 Default to platform configuration])],
2016 [],[enable_mingw_wildcard=platform])
2017 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
2018 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
2019 $(test x"$enable_mingw_wildcard" = xno; echo $?),
2020 [Value to set mingw's _dowildcard to.])])
2022 AC_ARG_ENABLE(large-address-aware,
2023 [AS_HELP_STRING([--enable-large-address-aware],
2024 [Link mingw executables with --large-address-aware])])
2025 AS_IF([test x"$enable_large_address_aware" = xyes],
2026 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
2027 [Define if we should link mingw executables with --large-address-aware])])
2029 AC_ARG_ENABLE(leading-mingw64-underscores,
2030 AS_HELP_STRING([--enable-leading-mingw64-underscores],
2031 [enable leading underscores on 64 bit mingw targets]),
2033 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
2034 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
2035 [Define if we should use leading underscore on 64 bit mingw targets])])
2038 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
2041 AC_ARG_ENABLE(frame-pointer,
2042 [AS_HELP_STRING([--enable-frame-pointer],
2043 [enable -fno-omit-frame-pointer by default for x86])], [],
2046 linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*)
2047 # Enable -fomit-frame-pointer by default for these systems with DWARF2.
2048 enable_frame_pointer=no
2051 enable_frame_pointer=yes
2057 i[[34567]]86-*-* | x86_64-*-*)
2058 if test "x$enable_cld" = xyes; then
2059 tm_defines="${tm_defines} USE_IX86_CLD=1"
2061 if test "x$enable_frame_pointer" = xyes; then
2062 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
2067 # Windows32 Registry support for specifying GCC installation paths.
2068 AC_ARG_ENABLE(win32-registry,
2069 [AS_HELP_STRING([--disable-win32-registry],
2070 [disable lookup of installation paths in the
2071 Registry on Windows hosts])
2072 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
2073 AS_HELP_STRING([--enable-win32-registry=KEY],
2074 [use KEY instead of GCC version as the last portion
2075 of the registry key])],,)
2078 win32 | pe | cygwin* | mingw32*)
2079 if test "x$enable_win32_registry" != xno; then
2080 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
2083 if test "x$enable_win32_registry" != xno; then
2084 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
2085 [Define to 1 if installation paths should be looked up in the Windows
2086 Registry. Ignored on non-Windows hosts.])
2088 if test "x$enable_win32_registry" != xyes \
2089 && test "x$enable_win32_registry" != x; then
2090 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
2091 [Define to be the last component of the Windows registry key under which
2092 to look for installation paths. The full key used will be
2093 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
2094 The default is the GCC version number.])
2100 # Get an absolute path to the GCC top-level source directory
2101 holddir=`${PWDCMD-pwd}`
2103 topdir=`${PWDCMD-pwd}`
2106 # Conditionalize the makefile for this host machine.
2108 for f in ${host_xmake_file}
2110 if test -f ${srcdir}/config/$f
2112 xmake_file="${xmake_file} \$(srcdir)/config/$f"
2116 # Conditionalize the makefile for this target machine.
2118 for f in ${tmake_file}
2120 if test -f ${srcdir}/config/$f
2122 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
2125 tmake_file="${tmake_file_}${omp_device_property_tmake_file}"
2127 out_object_file=`basename $out_file .c`.o
2128 common_out_object_file=`basename $common_out_file .c`.o
2130 tm_file_list="options.h"
2131 tm_include_list="options.h insn-constants.h"
2132 for f in $tm_file; do
2135 f=`echo $f | sed 's/^..//'`
2136 tm_file_list="${tm_file_list} $f"
2137 tm_include_list="${tm_include_list} $f"
2140 tm_file_list="${tm_file_list} \$(srcdir)/$f"
2141 tm_include_list="${tm_include_list} $f"
2144 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
2145 tm_include_list="${tm_include_list} config/$f"
2152 for f in $tm_p_file; do
2155 tm_p_file_list="${tm_p_file_list} $f"
2156 tm_p_include_list="${tm_p_include_list} $f"
2159 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
2160 tm_p_include_list="${tm_p_include_list} config/$f"
2165 tm_d_include_list="options.h insn-constants.h"
2166 for f in $tm_d_file; do
2169 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
2170 tm_d_include_list="${tm_d_include_list} $f"
2173 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
2174 tm_d_include_list="${tm_d_include_list} config/$f"
2181 for f in $xm_file; do
2184 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2185 xm_include_list="${xm_include_list} $f"
2188 xm_file_list="${xm_file_list} $f"
2189 xm_include_list="${xm_include_list} $f"
2192 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2193 xm_include_list="${xm_include_list} config/$f"
2199 host_xm_include_list=
2200 for f in $host_xm_file; do
2203 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2204 host_xm_include_list="${host_xm_include_list} $f"
2207 host_xm_file_list="${host_xm_file_list} $f"
2208 host_xm_include_list="${host_xm_include_list} $f"
2211 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2212 host_xm_include_list="${host_xm_include_list} config/$f"
2218 for f in $build_xm_file; do
2221 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2222 build_xm_include_list="${build_xm_include_list} $f"
2224 auto-build.h | auto-host.h )
2225 build_xm_file_list="${build_xm_file_list} $f"
2226 build_xm_include_list="${build_xm_include_list} $f"
2229 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2230 build_xm_include_list="${build_xm_include_list} config/$f"
2235 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2236 # cross-compiler which does not use the native headers and libraries.
2237 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2238 CROSS= AC_SUBST(CROSS)
2239 ALL=all.internal AC_SUBST(ALL)
2240 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2241 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2243 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2244 test x$build != x$host || test "x$with_build_sysroot" != x; then
2245 if test "x$with_build_sysroot" != x; then
2246 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2248 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2251 if test x$host != x$target
2253 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2255 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2256 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2257 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2260 if test "x$with_build_sysroot" != "x"; then
2261 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2262 elif test "x$with_sysroot" = x; then
2263 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2264 elif test "x$with_sysroot" = xyes; then
2265 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2267 target_header_dir="${with_sysroot}${native_system_header_dir}"
2270 target_header_dir=${native_system_header_dir}
2273 # If this is a cross-compiler that does not
2274 # have its own set of headers then define
2277 # If this is using newlib, without having the headers available now,
2278 # then define inhibit_libc in LIBGCC2_CFLAGS.
2279 # This prevents libgcc2 from containing any code which requires libc
2281 : ${inhibit_libc=false}
2282 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2283 test x$with_newlib = xyes ; } &&
2284 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2287 AC_SUBST(inhibit_libc)
2289 # When building gcc with a cross-compiler, we need to adjust things so
2290 # that the generator programs are still built with the native compiler.
2291 # Also, we cannot run fixincludes.
2293 # These are the normal (build=host) settings:
2294 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2295 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2296 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2297 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2298 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2299 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2301 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2302 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2304 # And these apply if build != host, or we are generating coverage data
2305 if test x$build != x$host || test "x$coverage_flags" != x
2307 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2308 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2309 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2311 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2312 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2313 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2314 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2316 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2317 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2319 # Expand extra_headers to include complete path.
2320 # This substitutes for lots of t-* files.
2322 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2323 for file in ${extra_headers} ; do
2324 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2327 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2328 if test x"$use_gcc_tgmath" = xyes
2329 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2332 # Define collect2 in Makefile.
2333 case $host_can_use_collect2 in
2335 *) collect2='collect2$(exeext)' ;;
2337 AC_SUBST([collect2])
2339 # Add a definition of USE_COLLECT2 if system wants one.
2340 case $use_collect2 in
2341 no) use_collect2= ;;
2344 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2345 xm_defines="${xm_defines} USE_COLLECT2"
2346 case $host_can_use_collect2 in
2348 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2354 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2355 [Define to the name of the LTO plugin DSO that must be
2356 passed to the linker's -plugin=LIB option.])
2358 # ---------------------------
2359 # Assembler & linker features
2360 # ---------------------------
2362 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2363 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2364 # However when ld-new is first executed from the build tree, libtool will
2365 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2366 # to the build tree. While doing this we need to use the previous-stage
2367 # linker, or we have an infinite loop. The presence of a shell script as
2368 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2369 # the gcc/collect-ld script. So we need to know how libtool works, or
2370 # exec-tool will fail.
2372 m4_defun([_LT_CONFIG_COMMANDS], [])
2375 AC_SUBST(enable_fast_install)
2377 # Identify the assembler which will work hand-in-glove with the newly
2378 # built GCC, so that we can examine its features. This is the assembler
2379 # which will be driven by the driver program.
2381 # If build != host, and we aren't building gas in-tree, we identify a
2382 # build->target assembler and hope that it will have the same features
2383 # as the host->target assembler we'll be using.
2384 gcc_cv_gas_major_version=
2385 gcc_cv_gas_minor_version=
2386 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2388 m4_pattern_allow([AS_FOR_TARGET])dnl
2389 AS_VAR_SET_IF(gcc_cv_as,, [
2390 if test -x "$DEFAULT_ASSEMBLER"; then
2391 gcc_cv_as="$DEFAULT_ASSEMBLER"
2392 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2393 && test -f ../gas/Makefile \
2394 && test x$build = x$host; then
2395 gcc_cv_as=../gas/as-new$build_exeext
2396 elif test -x as$build_exeext; then
2397 # Build using assembler in the current directory.
2398 gcc_cv_as=./as$build_exeext
2399 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2400 gcc_cv_as="$AS_FOR_TARGET"
2402 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2405 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2406 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2407 case "$ORIGINAL_AS_FOR_TARGET" in
2408 ./as | ./as$build_exeext) ;;
2409 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2412 AC_MSG_CHECKING(what assembler to use)
2413 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2414 # Single tree build which includes gas. We want to prefer it
2415 # over whatever linker top-level may have detected, since
2416 # we'll use what we're building after installation anyway.
2417 AC_MSG_RESULT(newly built gas)
2419 _gcc_COMPUTE_GAS_VERSION
2420 in_tree_gas_is_elf=no
2421 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2422 || (grep 'obj_format = multi' ../gas/Makefile \
2423 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2425 in_tree_gas_is_elf=yes
2428 AC_MSG_RESULT($gcc_cv_as)
2434 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2435 [case "${enableval}" in
2441 install_gold_as_default=no
2443 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2444 [case "${enableval}" in
2446 install_gold_as_default=yes
2449 if test x${default_ld} != x; then
2450 install_gold_as_default=yes
2456 AC_MSG_ERROR([invalid --enable-gold argument])
2460 # Identify the linker which will work hand-in-glove with the newly
2461 # built GCC, so that we can examine its features. This is the linker
2462 # which will be driven by the driver program.
2464 # If build != host, and we aren't building gas in-tree, we identify a
2465 # build->target linker and hope that it will have the same features
2466 # as the host->target linker we'll be using.
2467 gcc_cv_gld_major_version=
2468 gcc_cv_gld_minor_version=
2469 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2470 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2471 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2473 AS_VAR_SET_IF(gcc_cv_ld,, [
2474 if test -x "$DEFAULT_LINKER"; then
2475 gcc_cv_ld="$DEFAULT_LINKER"
2476 elif test $install_gold_as_default = yes \
2477 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2478 && test -f ../gold/Makefile \
2479 && test x$build = x$host; then
2480 gcc_cv_ld=../gold/ld-new$build_exeext
2481 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2482 && test -f ../ld/Makefile \
2483 && test x$build = x$host; then
2484 gcc_cv_ld=../ld/ld-new$build_exeext
2485 elif test -x collect-ld$build_exeext; then
2486 # Build using linker in the current directory.
2487 gcc_cv_ld=./collect-ld$build_exeext
2488 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2489 gcc_cv_ld="$LD_FOR_TARGET"
2491 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2494 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2495 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2496 # if the PLUGIN_LD is set ld-new, just have it as ld
2497 # as that is the installed named.
2498 if test x$PLUGIN_LD_SUFFIX = xld-new \
2499 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2502 AC_ARG_WITH(plugin-ld,
2503 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2504 [if test x"$withval" != x; then
2505 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2506 PLUGIN_LD_SUFFIX="$withval"
2508 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2509 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2511 # Check to see if we are using gold instead of ld
2512 AC_MSG_CHECKING(whether we are using gold)
2514 if test x$gcc_cv_ld != x; then
2515 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2516 | grep "GNU gold" > /dev/null; then
2520 AC_MSG_RESULT($ld_is_gold)
2522 AC_MSG_CHECKING(gold linker with split stack support as non default)
2523 # Check to see if default ld is not gold, but gold is
2524 # available and has support for split stack. If gcc was configured
2525 # with gold then no checking is done.
2527 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2529 # For platforms other than powerpc64*, enable as appropriate.
2532 ld_gold=`which ${gcc_cv_ld}.gold`
2533 # Make sure this gold has minimal split stack support
2534 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2535 ld_vers=`$ld_gold --version | sed 1q`
2536 gold_vers=`echo $ld_vers | sed -n \
2537 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2539 # check that the gold version contains the complete split stack support
2540 # on powerpc64 big and little endian
2542 case "$gold_vers" in
2543 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2545 *) gold_non_default=no
2551 if test $gold_non_default = yes; then
2552 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2553 [Define if the gold linker supports split stack and is available as a non-default])
2556 AC_MSG_RESULT($gold_non_default)
2558 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2559 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2560 case "$ORIGINAL_LD_FOR_TARGET" in
2561 ./collect-ld | ./collect-ld$build_exeext) ;;
2562 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2565 AC_MSG_CHECKING(what linker to use)
2566 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2567 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2568 # Single tree build which includes ld. We want to prefer it
2569 # over whatever linker top-level may have detected, since
2570 # we'll use what we're building after installation anyway.
2571 AC_MSG_RESULT(newly built ld)
2573 in_tree_ld_is_elf=no
2574 if (grep 'EMUL = .*elf' ../ld/Makefile \
2575 || grep 'EMUL = .*linux' ../ld/Makefile \
2576 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2577 in_tree_ld_is_elf=yes
2578 elif test "$ld_is_gold" = yes; then
2579 in_tree_ld_is_elf=yes
2581 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
2584 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2585 if test x$gcc_cv_gld_version != x; then
2589 case $gcc_cv_gld_version in
2592 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2595 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2596 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2598 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2599 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2601 AC_MSG_RESULT($gcc_cv_ld)
2603 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2604 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2605 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2608 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2609 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2611 # Figure out what nm we will be using.
2612 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2613 AS_VAR_SET_IF(gcc_cv_nm,, [
2614 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2615 && test -f ../binutils/Makefile \
2616 && test x$build = x$host; then
2617 gcc_cv_nm=../binutils/nm-new$build_exeext
2618 elif test -x nm$build_exeext; then
2619 gcc_cv_nm=./nm$build_exeext
2620 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2621 gcc_cv_nm="$NM_FOR_TARGET"
2623 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2626 AC_MSG_CHECKING(what nm to use)
2627 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2628 # Single tree build which includes binutils.
2629 AC_MSG_RESULT(newly built nm)
2632 AC_MSG_RESULT($gcc_cv_nm)
2636 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2637 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2638 case "$ORIGINAL_NM_FOR_TARGET" in
2639 ./nm | ./nm$build_exeext) ;;
2640 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2644 # Figure out what objdump we will be using.
2645 AS_VAR_SET_IF(gcc_cv_objdump,, [
2646 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2647 && test -f ../binutils/Makefile \
2648 && test x$build = x$host; then
2649 # Single tree build which includes binutils.
2650 gcc_cv_objdump=../binutils/objdump$build_exeext
2651 elif test -x objdump$build_exeext; then
2652 gcc_cv_objdump=./objdump$build_exeext
2653 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2654 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2656 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2659 AC_MSG_CHECKING(what objdump to use)
2660 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2661 # Single tree build which includes binutils.
2662 AC_MSG_RESULT(newly built objdump)
2663 elif test x$gcc_cv_objdump = x; then
2664 AC_MSG_RESULT(not found)
2666 AC_MSG_RESULT($gcc_cv_objdump)
2669 # Figure out what readelf we will be using.
2670 AS_VAR_SET_IF(gcc_cv_readelf,, [
2671 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2672 && test -f ../binutils/Makefile \
2673 && test x$build = x$host; then
2674 # Single tree build which includes binutils.
2675 gcc_cv_readelf=../binutils/readelf$build_exeext
2676 elif test -x readelf$build_exeext; then
2677 gcc_cv_readelf=./readelf$build_exeext
2678 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2679 gcc_cv_readelf="$READELF_FOR_TARGET"
2681 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2684 AC_MSG_CHECKING(what readelf to use)
2685 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2686 # Single tree build which includes binutils.
2687 AC_MSG_RESULT(newly built readelf)
2688 elif test x$gcc_cv_readelf = x; then
2689 AC_MSG_RESULT(not found)
2691 AC_MSG_RESULT($gcc_cv_readelf)
2694 # Figure out what otool we will be using.
2695 AS_VAR_SET_IF(gcc_cv_otool,, [
2696 if test -x otool$build_exeext; then
2697 gcc_cv_otool=./otool$build_exeext
2698 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2699 gcc_cv_otool="$OTOOL_FOR_TARGET"
2701 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2704 AC_MSG_CHECKING(what otool to use)
2705 if test x$gcc_cv_otool = x; then
2706 AC_MSG_RESULT(not found)
2708 AC_MSG_RESULT($gcc_cv_otool)
2711 # Figure out what assembler alignment features are present.
2712 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2716 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2717 [Define if your assembler supports .balign and .p2align.])])
2719 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2722 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2723 [Define if your assembler supports specifying the maximum number
2724 of bytes to skip when using the GAS .p2align command.])])
2726 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2729 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2730 [Define if your assembler supports .literal16.])])
2732 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2734 [conftest_label1: .word 0
2736 conftest_label2: .word 0
2738 [if test x$gcc_cv_nm != x; then
2739 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2740 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2741 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2743 else gcc_cv_as_subsection_m1=yes
2745 rm -f conftest.nm1 conftest.nm2
2747 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2748 [Define if your assembler supports .subsection and .subsection -1 starts
2749 emitting at the beginning of your section.])])
2751 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2754 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2756 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2758 [ .weakref foobar, barfnot],,
2759 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2761 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2764 .NSUBSPA $CODE$,COMDAT],,
2765 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2767 # .hidden needs to be supported in both the assembler and the linker,
2768 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2769 # This is irritatingly difficult to feature test for; we have to check the
2770 # date string after the version number. If we've got an in-tree
2771 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2773 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2776 conftest_s=' .globl foobar,hidden'
2779 conftest_s=' .hidden foobar
2783 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2784 [elf,2,13,0],, [$conftest_s])
2787 # Darwin as has some visibility support, though with a different syntax.
2788 gcc_cv_as_hidden=yes
2792 # gnu_indirect_function type is an extension proposed at
2793 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2794 # selection of function implementation
2795 AC_ARG_ENABLE(gnu-indirect-function,
2796 [AS_HELP_STRING([--enable-gnu-indirect-function],
2797 [enable the use of the @gnu_indirect_function to glibc systems])],
2798 [case $enable_gnu_indirect_function in
2800 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2801 Valid choices are 'yes' and 'no'.]) ;;
2803 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2805 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2806 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2807 [Define if your system supports gnu indirect functions.])
2811 if test $in_tree_ld != yes ; then
2812 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2813 if echo "$ld_ver" | grep GNU > /dev/null; then
2814 if test x"$ld_is_gold" = xyes; then
2815 # GNU gold --version looks like this:
2817 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2819 # We extract the binutils version which is more familiar and specific
2820 # than the gold version.
2821 ld_vers=`echo $ld_ver | sed -n \
2822 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2824 # GNU ld --version looks like this:
2826 # GNU ld (GNU Binutils) 2.21.51.20110225
2827 ld_vers=`echo $ld_ver | sed -n \
2828 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2830 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'`
2831 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2832 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2833 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2837 # Solaris 2 ld -V output looks like this for a regular version:
2839 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2841 # but test versions add stuff at the end:
2843 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2845 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2846 # numbers can be used in ld.so.1 feature checks even if a different
2847 # linker is configured.
2848 ld_ver=`$gcc_cv_ld -V 2>&1`
2849 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2850 ld_vers=`echo $ld_ver | sed -n \
2851 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2852 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2853 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2861 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2862 [[if test $in_tree_ld = yes ; then
2864 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2865 && test $in_tree_ld_is_elf = yes; then
2866 gcc_cv_ld_hidden=yes
2869 gcc_cv_ld_hidden=yes
2870 if test x"$ld_is_gold" = xyes; then
2872 elif echo "$ld_ver" | grep GNU > /dev/null; then
2873 if test 0"$ld_date" -lt 20020404; then
2874 if test -n "$ld_date"; then
2875 # If there was date string, but was earlier than 2002-04-04, fail
2877 elif test -z "$ld_vers"; then
2878 # If there was no date string nor ld version number, something is wrong
2881 test -z "$ld_vers_patch" && ld_vers_patch=0
2882 if test "$ld_vers_major" -lt 2; then
2884 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2885 gcc_cv_ld_hidden="no"
2886 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2894 gcc_cv_ld_hidden=yes
2897 # Darwin ld has some visibility support.
2898 gcc_cv_ld_hidden=yes
2900 hppa64*-*-hpux* | ia64*-*-hpux*)
2901 gcc_cv_ld_hidden=yes
2904 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2905 # .symbolic was only added in Solaris 9 12/02.
2906 gcc_cv_ld_hidden=yes
2914 libgcc_visibility=no
2915 AC_SUBST(libgcc_visibility)
2916 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2917 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2918 libgcc_visibility=yes
2919 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2920 [Define if your assembler and linker support .hidden.])
2923 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2924 gcc_cv_ld_ro_rw_mix=unknown
2925 if test $in_tree_ld = yes ; then
2926 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2927 && test $in_tree_ld_is_elf = yes; then
2928 gcc_cv_ld_ro_rw_mix=read-write
2930 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2931 echo '.section myfoosect, "a"' > conftest1.s
2932 echo '.section myfoosect, "aw"' > conftest2.s
2933 echo '.byte 1' >> conftest2.s
2934 echo '.section myfoosect, "a"' > conftest3.s
2935 echo '.byte 0' >> conftest3.s
2936 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2937 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2938 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2939 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2940 conftest2.o conftest3.o > /dev/null 2>&1; then
2941 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2942 | sed -e '/myfoosect/!d' -e N`
2943 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2944 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2945 gcc_cv_ld_ro_rw_mix=read-only
2947 gcc_cv_ld_ro_rw_mix=read-write
2952 rm -f conftest.* conftest[123].*
2955 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2956 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2957 [Define if your linker links a mix of read-only
2958 and read-write sections into a read-write section.])
2960 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2962 gcc_AC_INITFINI_ARRAY
2964 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2965 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2973 [[# GAS versions before 2.11 do not support uleb128,
2974 # despite appearing to.
2975 # ??? There exists an elf-specific test that will crash
2976 # the assembler. Perhaps it's better to figure out whether
2977 # arbitrary sections are supported and try the test.
2978 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2979 if echo "$as_ver" | grep GNU > /dev/null; then
2980 as_vers=`echo $as_ver | sed -n \
2981 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2982 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2983 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2984 if test $as_major -eq 2 && test $as_minor -lt 11
2986 else gcc_cv_as_leb128=yes
2989 [AC_DEFINE(HAVE_AS_LEB128, 1,
2990 [Define if your assembler supports .sleb128 and .uleb128.])],
2991 [AC_DEFINE(HAVE_AS_LEB128, 0,
2992 [Define if your assembler supports .sleb128 and .uleb128.])])
2994 # Determine if an .eh_frame section is read-only.
2995 gcc_fn_eh_frame_ro () {
2996 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2997 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2998 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
3001 # Check if we have assembler support for unwind directives.
3002 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
3009 .cfi_escape 1, 2, 3, 4, 5
3013 # If the linker used on Solaris (like Sun ld) isn't capable of merging
3014 # read-only and read-write sections, we need to make sure that the
3015 # assembler used emits read-write .eh_frame sections.
3016 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
3017 gcc_cv_as_cfi_directive=yes
3018 elif test "x$gcc_cv_objdump" = x; then
3019 # No objdump, err on the side of caution.
3020 gcc_cv_as_cfi_directive=no
3022 if test x$gas = xyes; then
3030 sparc*-*-solaris2.*)
3031 # On Solaris/SPARC, .eh_frame sections should always be read-write.
3032 if gcc_fn_eh_frame_ro $as_32_opt \
3033 || gcc_fn_eh_frame_ro $as_64_opt; then
3034 gcc_cv_as_cfi_directive=no
3036 gcc_cv_as_cfi_directive=yes
3039 i?86-*-solaris2.* | x86_64-*-solaris2.*)
3040 # On Solaris/x86, make sure that GCC and assembler agree on using
3041 # read-only .eh_frame sections for 64-bit.
3042 if gcc_fn_eh_frame_ro $as_32_opt; then
3043 gcc_cv_as_cfi_directive=no
3044 elif gcc_fn_eh_frame_ro $as_64_opt; then
3045 gcc_cv_as_cfi_directive=yes
3047 gcc_cv_as_cfi_directive=no
3054 gcc_cv_as_cfi_directive=yes
3057 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
3058 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
3062 .cfi_adjust_cfa_offset 64
3064 .cfi_adjust_cfa_offset 128
3067 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
3068 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
3069 gcc_cv_as_cfi_advance_working=yes
3073 # no objdump, err on the side of caution
3074 gcc_cv_as_cfi_advance_working=no
3076 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
3077 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
3078 [`if test $gcc_cv_as_cfi_directive = yes \
3079 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
3080 [Define 0/1 if your assembler supports CFI directives.])
3082 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
3083 gcc_GAS_CHECK_FEATURE([cfi personality directive],
3084 gcc_cv_as_cfi_personality_directive, ,,
3087 .cfi_personality 0, symbol
3089 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
3090 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
3091 [Define 0/1 if your assembler supports .cfi_personality.])
3093 gcc_GAS_CHECK_FEATURE([cfi sections directive],
3094 gcc_cv_as_cfi_sections_directive, ,,
3096 .cfi_sections .debug_frame, .eh_frame
3100 win32 | pe | cygwin* | mingw32*)
3101 # Need to check that we generated the correct relocation for the
3102 # .debug_frame section. This was fixed for binutils 2.21.
3103 gcc_cv_as_cfi_sections_directive=no
3104 if test "x$gcc_cv_objdump" != x; then
3105 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
3106 grep secrel > /dev/null; then
3107 gcc_cv_as_cfi_sections_directive=yes
3112 gcc_cv_as_cfi_sections_directive=yes
3115 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
3116 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
3117 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
3118 [Define 0/1 if your assembler supports .cfi_sections.])
3120 # GAS versions up to and including 2.11.0 may mis-optimize
3122 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
3130 .section .eh_frame,"aw",@progbits
3132 .4byte .LECIE1-.LSCIE1
3146 .4byte .LEFDE1-.LASFDE1
3148 .4byte .LASFDE1-__FRAME_BEGIN__
3156 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
3157 cat > conftest.lit <<EOF
3158 0000 10000000 00000000 017a0001 781a0004 .........z..x...
3159 0010 01000000 12000000 18000000 00000000 ................
3160 0020 08000000 04080000 0044 .........D @&t@
3162 cat > conftest.big <<EOF
3163 0000 00000010 00000000 017a0001 781a0004 .........z..x...
3164 0010 00000001 00000012 00000018 00000000 ................
3165 0020 00000008 04000000 0844 .........D @&t@
3167 # If the assembler didn't choke, and we can objdump,
3168 # and we got the correct data, then succeed.
3169 # The text in the here-document typically retains its unix-style line
3170 # endings, while the output of objdump will use host line endings.
3171 # Therefore, use diff -b for the comparisons.
3172 if test x$gcc_cv_objdump != x \
3173 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3174 | tail -3 > conftest.got \
3175 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3176 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3178 gcc_cv_as_eh_frame=yes
3179 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3180 gcc_cv_as_eh_frame=buggy
3182 # Uh oh, what do we do now?
3183 gcc_cv_as_eh_frame=no
3186 if test $gcc_cv_as_eh_frame = buggy; then
3187 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3188 [Define if your assembler mis-optimizes .eh_frame data.])
3191 # Test if the assembler supports the section flag 'e' or #exclude for
3192 # specifying an excluded section.
3193 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3194 [2,22,51], [--fatal-warnings],
3197 if test $gcc_cv_as_section_exclude_e = no; then
3199 # Solaris as uses #exclude instead.
3203 conftest_s='.section "foo1", #exclude'
3205 i?86-*-solaris2* | x86_64-*-solaris2*)
3206 conftest_s='.section foo1, #exclude'
3211 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3215 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3216 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3217 [Define if your assembler supports specifying the exclude section flag.])
3219 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3220 [elf,2,12,0], [--fatal-warnings],
3221 [.section .rodata.str, "aMS", @progbits, 1])
3222 if test $gcc_cv_as_shf_merge = no; then
3223 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3224 [elf,2,12,0], [--fatal-warnings],
3225 [.section .rodata.str, "aMS", %progbits, 1])
3227 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3228 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3229 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3231 gcc_cv_ld_aligned_shf_merge=yes
3233 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3235 sparc*-*-solaris2.11*)
3236 if test x"$gnu_ld" = xno \
3237 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3238 gcc_cv_ld_aligned_shf_merge=no
3242 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3243 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3244 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3246 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3247 [.stabs "gcc2_compiled.",60,0,0,0],,
3248 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3249 [Define if your assembler supports .stabs.])])
3251 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3252 gcc_cv_as_comdat_group,
3253 [elf,2,16,0], [--fatal-warnings],
3254 [.section .text,"axG",@progbits,.foo,comdat])
3255 if test $gcc_cv_as_comdat_group = yes; then
3256 gcc_cv_as_comdat_group_percent=no
3257 gcc_cv_as_comdat_group_group=no
3259 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3260 gcc_cv_as_comdat_group_percent,
3261 [elf,2,16,0], [--fatal-warnings],
3262 [.section .text,"axG",%progbits,.foo,comdat])
3263 if test $gcc_cv_as_comdat_group_percent = yes; then
3264 gcc_cv_as_comdat_group_group=no
3267 # Sun as uses a completely different syntax.
3272 .group foo,".text%foo",#comdat
3273 .section ".text%foo", #alloc,#execinstr,#progbits
3278 i?86-*-solaris2* | x86_64-*-solaris2*)
3280 .group foo,.text%foo,#comdat
3281 .section .text%foo, "ax", @progbits
3287 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3288 gcc_cv_as_comdat_group_group,
3292 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3293 gcc_cv_as_comdat_group_group=no
3297 if test x"$ld_is_gold" = xyes; then
3299 elif test $in_tree_ld = yes ; then
3301 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3302 && test $in_tree_ld_is_elf = yes; then
3305 elif echo "$ld_ver" | grep GNU > /dev/null; then
3307 if test 0"$ld_date" -lt 20050308; then
3308 if test -n "$ld_date"; then
3309 # If there was date string, but was earlier than 2005-03-08, fail
3311 elif test "$ld_vers_major" -lt 2; then
3313 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3320 *-*-solaris2.1[1-9]*)
3322 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3323 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3326 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3327 # least ld version 1.2267.
3328 if test "$ld_vers_major" -gt 1; then
3330 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3332 elif test "$ld_vers_minor" -ge 2267; then
3337 # Assume linkers other than GNU ld don't support COMDAT group.
3343 # Allow overriding the automatic COMDAT group tests above.
3344 AC_ARG_ENABLE(comdat,
3345 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3346 [comdat_group="$enable_comdat"])
3347 if test $comdat_group = no; then
3348 gcc_cv_as_comdat_group=no
3349 gcc_cv_as_comdat_group_percent=no
3350 gcc_cv_as_comdat_group_group=no
3352 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3353 [`if test $gcc_cv_as_comdat_group = yes \
3354 || test $gcc_cv_as_comdat_group_percent = yes \
3355 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3356 [Define 0/1 if your assembler and linker support COMDAT groups.])
3358 # Restrict this test to Solaris/x86: other targets define this statically.
3360 i?86-*-solaris2* | x86_64-*-solaris2*)
3361 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3362 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3366 # Full support for hidden thunks in linkonce sections only appeared in
3367 # Solaris 11/OpenSolaris.
3368 *-*-solaris2.1[[1-9]]*)
3376 AC_MSG_RESULT($hidden_linkonce)
3377 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3378 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3379 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3383 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3388 .loc 1 1 0 is_stmt 1],,
3389 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3390 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3392 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3393 gcc_cv_as_discriminator,
3397 .loc 1 1 0 discriminator 1],,
3398 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3399 [Define if your assembler supports the .loc discriminator sub-directive.])])
3401 # Catch the newlib flag of the same name so we can gate GCC features on it.
3402 AC_ARG_ENABLE(newlib-nano-formatted-io,
3403 [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version
3405 [case "${enableval}" in
3409 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval])
3413 # Thread-local storage - the check is heavily parameterized.
3422 .section ".tdata","awT",@progbits
3425 ldq $27,__tls_get_addr($29) !literal!1
3426 lda $16,foo($29) !tlsgd!1
3427 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3428 ldq $27,__tls_get_addr($29) !literal!2
3429 lda $16,foo($29) !tlsldm!2
3430 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3431 ldq $1,foo($29) !gotdtprel
3432 ldah $2,foo($29) !dtprelhi
3433 lda $3,foo($2) !dtprello
3434 lda $4,foo($29) !dtprel
3435 ldq $1,foo($29) !gottprel
3436 ldah $2,foo($29) !tprelhi
3437 lda $3,foo($2) !tprello
3438 lda $4,foo($29) !tprel'
3441 tls_as_opt=--fatal-warnings
3445 add_s r0,r0, @foo@tpoff'
3449 cris-*-*|crisv32-*-*)
3451 .section ".tdata","awT",@progbits
3458 tls_as_opt=--fatal-warnings
3462 .section ".tdata","awT",@progbits
3474 .section ".tdata","awT",@progbits
3478 addil LT%foo-$tls_gdidx$,gp
3479 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3482 addil LT%foo-$tls_ldidx$,gp
3484 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3485 addil LR%foo-$tls_dtpoff$,%ret0
3486 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3488 addil LT%foo-$tls_ieoff$,gp
3489 ldw RT%foo-$tls_ieoff$(%r1),%t2
3492 addil LR%foo-$tls_leoff$,%t1
3493 ldo RR%foo-$tls_leoff$(%r1),%t2'
3496 tls_as_opt=--fatal-warnings
3500 .section ".tdata","awT",%progbits
3511 i[34567]86-*-* | x86_64-*-*)
3513 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*)
3520 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3522 .section .tdata,"awt",@progbits'
3527 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3528 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3532 .section ".tdata","awT",@progbits'
3536 tls_as_opt="--fatal-warnings"
3540 if test x$on_solaris = xyes; then
3542 yes) tls_as_opt="$tls_as_opt --32" ;;
3545 conftest_s="$conftest_s
3549 leal foo@tlsgd(,%ebx,1), %eax
3550 leal foo@tlsldm(%ebx), %eax
3551 leal foo@dtpoff(%eax), %edx
3552 movl foo@gottpoff(%ebx), %eax
3553 subl foo@gottpoff(%ebx), %eax
3554 addl foo@gotntpoff(%ebx), %eax
3555 movl foo@indntpoff, %eax
3556 movl \$foo@tpoff, %eax
3557 subl \$foo@tpoff, %eax
3558 leal foo@ntpoff(%ecx), %eax"
3561 if test x$on_solaris = xyes; then
3563 yes) tls_as_opt="$tls_as_opt --64" ;;
3564 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3567 conftest_s="$conftest_s
3571 leaq foo@tlsgd(%rip), %rdi
3572 leaq foo@tlsld(%rip), %rdi
3573 leaq foo@dtpoff(%rax), %rdx
3574 movq foo@gottpoff(%rip), %rax
3575 movq \$foo@tpoff, %rax"
3581 .section ".tdata","awT",@progbits
3584 addl r16 = @ltoff(@dtpmod(foo#)), gp
3585 addl r17 = @ltoff(@dtprel(foo#)), gp
3586 addl r18 = @ltoff(@tprel(foo#)), gp
3587 addl r19 = @dtprel(foo#), gp
3588 adds r21 = @dtprel(foo#), r13
3589 movl r23 = @dtprel(foo#)
3590 addl r20 = @tprel(foo#), gp
3591 adds r22 = @tprel(foo#), r13
3592 movl r24 = @tprel(foo#)'
3595 tls_as_opt=--fatal-warnings
3599 .section .tdata,"awT",@progbits
3603 addik r5,r20,x@TLSGD
3604 addik r5,r20,x@TLSLDM'
3607 tls_as_opt='--fatal-warnings'
3611 .section .tdata,"awT",@progbits
3615 addiu $4, $28, %tlsgd(x)
3616 addiu $4, $28, %tlsldm(x)
3617 lui $4, %dtprel_hi(x)
3618 addiu $4, $4, %dtprel_lo(x)
3619 lw $4, %gottprel(x)($28)
3620 lui $4, %tprel_hi(x)
3621 addiu $4, $4, %tprel_lo(x)'
3624 tls_as_opt='-32 --fatal-warnings'
3628 .section .tdata,"awT",@progbits
3633 move.l x@TLSGD(%a5),%a0
3634 move.l x@TLSLDM(%a5),%a0
3635 move.l x@TLSLDO(%a5),%a0
3636 move.l x@TLSIE(%a5),%a0
3637 move.l x@TLSLE(%a5),%a0'
3640 tls_as_opt='--fatal-warnings'
3644 .section ".tdata","awT",@progbits'
3647 tls_as_opt="--fatal-warnings"
3651 .section ".tdata","awT",%progbits
3655 add x0, x0, #:tlsgd_lo12:x
3660 tls_as_opt='--fatal-warnings'
3664 .section ".tdata","awT",@progbits
3667 l.movhi r3, tpoffha(foo)
3669 l.lwz r4, tpofflo(foo)(r3)'
3672 tls_as_opt=--fatal-warnings
3676 .extern __get_tpointer
3694 .section ".tdata","awT",@progbits
3702 addi 3,2,ld0@got@tlsgd
3708 addi 3,2,x1@got@tlsld
3714 addis 9,3,x2@dtprel@ha
3715 addi 9,9,x2@dtprel@l
3718 ld 9,x3@got@dtprel(2)
3724 tls_as_opt="-a64 --fatal-warnings"
3728 .section ".tdata","awT",@progbits
3736 addi 3,31,ld0@got@tlsgd
3738 addi 3,31,x1@got@tlsld
3741 addis 9,3,x2@dtprel@ha
3742 addi 9,9,x2@dtprel@l
3743 lwz 9,x3@got@tprel(31)
3746 addis 9,2,x2@tprel@ha
3747 addi 9,9,x2@tprel@l'
3750 tls_as_opt="-a32 --fatal-warnings"
3754 .section .tdata,"awT",@progbits
3758 call __tls_get_addr'
3761 tls_as_opt='--fatal-warnings'
3765 .section ".tdata","awT",@progbits
3774 l %r1,foo@GOTNTPOFF(%r12)
3775 l %r1,0(%r1):tls_load:foo
3776 bas %r14,0(%r1,%r13):tls_gdcall:foo
3777 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3780 tls_as_opt="-m31 --fatal-warnings"
3784 .section ".tdata","awT",@progbits
3792 lg %r1,foo@GOTNTPOFF(%r12)
3793 larl %r1,foo@INDNTPOFF
3794 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3795 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3798 tls_as_opt="-m64 -Aesame --fatal-warnings"
3800 sh-*-* | sh[123456789lbe]*-*-*)
3802 .section ".tdata","awT",@progbits
3812 tls_as_opt=--fatal-warnings
3816 sparc*-sun-solaris2.*)
3823 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3825 .section ".tdata",#alloc,#write,#tls'
3830 .section ".tdata","awT",@progbits'
3833 tls_as_opt="-32 --fatal-warnings"
3835 conftest_s="$conftest_s
3838 sethi %tgd_hi22(foo), %o0
3839 add %o0, %tgd_lo10(foo), %o1
3840 add %l7, %o1, %o0, %tgd_add(foo)
3841 call __tls_get_addr, %tgd_call(foo)
3842 sethi %tldm_hi22(foo), %l1
3843 add %l1, %tldm_lo10(foo), %l2
3844 add %l7, %l2, %o0, %tldm_add(foo)
3845 call __tls_get_addr, %tldm_call(foo)
3846 sethi %tldo_hix22(foo), %l3
3847 xor %l3, %tldo_lox10(foo), %l4
3848 add %o0, %l4, %l5, %tldo_add(foo)
3849 sethi %tie_hi22(foo), %o3
3850 add %o3, %tie_lo10(foo), %o3
3851 ld [%l7 + %o3], %o2, %tie_ld(foo)
3852 add %g7, %o2, %o4, %tie_add(foo)
3853 sethi %tle_hix22(foo), %l1
3854 xor %l1, %tle_lox10(foo), %o5
3855 ld [%g7 + %o5], %o1"
3859 .section ".tdata","awT",@progbits
3862 addli r0, zero, tls_gd(foo)
3863 auli r0, zero, tls_gd_ha16(foo)
3864 addli r0, r0, tls_gd_lo16(foo)
3866 addli r0, zero, tls_ie(foo)
3867 auli r0, r0, tls_ie_ha16(foo)
3868 addli r0, r0, tls_ie_lo16(foo)'
3871 tls_as_opt="--fatal-warnings"
3875 .section ".tdata","awT",@progbits
3878 shl16insli r0, zero, hw0_last_tls_gd(foo)
3879 shl16insli r0, zero, hw1_last_tls_gd(foo)
3880 shl16insli r0, r0, hw0_tls_gd(foo)
3882 shl16insli r0, zero, hw1_last_tls_ie(foo)
3883 shl16insli r0, r0, hw0_tls_ie(foo)'
3886 tls_as_opt="--fatal-warnings"
3890 .section ".tdata","awT",@progbits
3893 movi a8, foo@TLSFUNC
3894 movi a10, foo@TLSARG
3895 callx8.tls a8, foo@TLSCALL'
3902 if test "x$enable_tls" = xno ; then
3903 : # TLS explicitly disabled.
3904 elif test "x$enable_tls" = xyes ; then
3905 set_have_as_tls=yes # TLS explicitly enabled.
3906 elif test -z "$tls_first_major"; then
3907 : # If we don't have a check, assume no support.
3909 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3910 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3911 [set_have_as_tls=yes])
3913 if test $set_have_as_tls = yes ; then
3914 AC_DEFINE(HAVE_AS_TLS, 1,
3915 [Define if your assembler and linker support thread-local storage.])
3918 # Target-specific assembler checks.
3920 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3921 gcc_cv_ld_static_dynamic=no
3922 gcc_cv_ld_static_option='-Bstatic'
3923 gcc_cv_ld_dynamic_option='-Bdynamic'
3924 if test $in_tree_ld = yes ; then
3925 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3926 gcc_cv_ld_static_dynamic=yes
3928 elif test x$gcc_cv_ld != x; then
3929 # Check if linker supports -Bstatic/-Bdynamic option
3930 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3931 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3932 gcc_cv_ld_static_dynamic=yes
3935 # AIX ld uses -b flags
3936 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3937 gcc_cv_ld_static_dynamic=yes
3938 gcc_cv_ld_static_option="-bstatic"
3939 gcc_cv_ld_dynamic_option="-bdynamic"
3941 # HP-UX ld uses -a flags to select between shared and archive.
3943 if test x"$gnu_ld" = xno; then
3944 gcc_cv_ld_static_dynamic=yes
3945 gcc_cv_ld_static_option="-aarchive_shared"
3946 gcc_cv_ld_dynamic_option="-adefault"
3949 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3951 gcc_cv_ld_static_dynamic=yes
3956 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3957 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3958 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3959 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3960 [Define to the linker option to disable use of shared objects.])
3961 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3962 [Define to the linker option to enable use of shared objects.])
3964 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3966 AC_MSG_CHECKING(linker --version-script option)
3967 gcc_cv_ld_version_script=no
3968 ld_version_script_option=''
3969 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3970 gcc_cv_ld_version_script=yes
3971 ld_version_script_option='--version-script'
3972 elif test x$gcc_cv_ld != x; then
3974 # Solaris 2 ld always supports -M. It also supports a subset of
3975 # --version-script since Solaris 11.4, but requires
3976 # -z gnu-version-script-compat to activate.
3978 gcc_cv_ld_version_script=yes
3979 ld_version_script_option='-M'
3983 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3984 AC_MSG_RESULT($gcc_cv_ld_version_script)
3985 AC_SUBST(ld_version_script_option)
3987 AC_MSG_CHECKING(linker soname option)
3989 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3990 gcc_cv_ld_soname=yes
3991 ld_soname_option='-soname'
3992 elif test x$gcc_cv_ld != x; then
3995 gcc_cv_ld_soname=yes
3996 ld_soname_option='-install_name'
3998 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3999 # ld compatiblity since some Solaris 10 update.
4001 gcc_cv_ld_soname=yes
4002 ld_soname_option='-h'
4006 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
4007 AC_MSG_RESULT($gcc_cv_ld_soname)
4008 AC_SUBST(ld_soname_option)
4010 if test x"$demangler_in_ld" = xyes; then
4011 AC_MSG_CHECKING(linker --demangle support)
4012 gcc_cv_ld_demangle=no
4013 if test $in_tree_ld = yes; then
4014 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
4015 gcc_cv_ld_demangle=yes
4017 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
4018 # Check if the GNU linker supports --demangle option
4019 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
4020 gcc_cv_ld_demangle=yes
4023 if test x"$gcc_cv_ld_demangle" = xyes; then
4024 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
4025 [Define if your linker supports --demangle option.])
4027 AC_MSG_RESULT($gcc_cv_ld_demangle)
4030 AC_MSG_CHECKING(linker plugin support)
4032 if test -f liblto_plugin.la; then
4033 save_ld_ver="$ld_ver"
4034 save_ld_vers_major="$ld_vers_major"
4035 save_ld_vers_minor="$ld_vers_minor"
4036 save_ld_is_gold="$ld_is_gold"
4040 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
4042 # FIXME: ld_is_gold?
4043 ld_vers_major="$gcc_cv_gld_major_version"
4044 ld_vers_minor="$gcc_cv_gld_minor_version"
4046 # Determine plugin linker version.
4047 # FIXME: Partial duplicate from above, generalize.
4049 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
4050 if echo "$ld_ver" | grep GNU > /dev/null; then
4051 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
4053 ld_vers=`echo $ld_ver | sed -n \
4054 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
4056 ld_vers=`echo $ld_ver | sed -n \
4057 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
4059 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
4060 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
4065 # Determine plugin support.
4066 if echo "$ld_ver" | grep GNU > /dev/null; then
4067 # Require GNU ld or gold 2.21+ for plugin support by default.
4068 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
4070 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
4071 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
4076 ld_ver="$save_ld_ver"
4077 ld_vers_major="$save_ld_vers_major"
4078 ld_vers_minor="$save_ld_vers_minor"
4079 ld_is_gold="$save_ld_is_gold"
4081 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
4082 [Define to the level of your linker's plugin support.])
4083 AC_MSG_RESULT($gcc_cv_lto_plugin)
4085 # Target OS-specific assembler checks.
4087 case "$target_os" in
4089 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
4090 gcc_cv_as_mmacosx_version_min,,
4091 [-mmacosx-version-min=10.1], [.text],,
4092 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
4093 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
4097 # Target CPU-specific assembler checks.
4101 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
4102 [-mabi=lp64], [.text],,,)
4103 if test x$gcc_cv_as_aarch64_mabi = xyes; then
4104 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
4105 [Define if your assembler supports the -mabi option.])
4107 if test x$with_abi = xilp32; then
4108 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4109 Upgrade the Assembler.])
4111 if test x"$with_multilib_list" = xdefault; then
4112 TM_MULTILIB_CONFIG=lp64
4114 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
4115 for aarch64_multilib in ${aarch64_multilibs}; do
4116 case ${aarch64_multilib} in
4118 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
4119 Upgrade the Assembler.])
4127 # Check if we have binutils support for relocations types needed by -fpic
4128 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
4131 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
4132 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
4133 [Define if your assembler supports relocs needed by -fpic.])])
4134 # Enable Branch Target Identification Mechanism and Return Address
4135 # Signing by default.
4136 AC_ARG_ENABLE(standard-branch-protection,
4138 AS_HELP_STRING([--enable-standard-branch-protection],
4139 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4140 AS_HELP_STRING([--disable-standard-branch-protection],
4141 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
4146 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
4151 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
4152 Valid choices are 'yes' and 'no'.])
4157 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
4158 AC_ARG_ENABLE(fix-cortex-a53-835769,
4160 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
4161 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4162 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
4163 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
4168 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4173 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4174 Valid choices are 'yes' and 'no'.])
4180 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4181 AC_ARG_ENABLE(fix-cortex-a53-843419,
4183 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4184 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4185 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4186 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4191 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4196 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4197 Valid choices are 'yes' and 'no'.])
4205 # All TARGET_ABI_OSF targets.
4206 alpha*-*-linux* | alpha*-*-*bsd*)
4207 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4208 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4211 extbl $3, $2, $3 !lituse_bytoff!1
4212 ldq $2, a($29) !literal!1
4213 ldq $4, b($29) !literal!2
4214 ldq_u $3, 0($2) !lituse_base!1
4215 ldq $27, f($29) !literal!5
4216 jsr $26, ($27), f !lituse_jsr!5
4217 ldah $29, 0($26) !gpdisp!3
4218 lda $0, c($29) !gprel
4219 ldah $1, d($29) !gprelhigh
4220 lda $1, d($1) !gprellow
4221 lda $29, 0($29) !gpdisp!3],,
4222 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4223 [Define if your assembler supports explicit relocations.])])
4224 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4225 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4228 ldq $27, a($29) !literal!1
4229 jsr $26, ($27), a !lituse_jsrdirect!1],,
4230 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4231 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4235 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4236 [--mlink-relax], [.text],,
4237 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4238 [Define if your avr assembler supports --mlink-relax option.])])
4240 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4242 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4243 [Define if your avr assembler supports -mrmw option.])])
4245 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4246 gcc_cv_as_avr_mgccisr,,
4252 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4253 [Define if your avr assembler supports -mgcc-isr option.])])
4255 # Check how default linker description file implements .rodata for
4256 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4257 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4258 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4259 cat > conftest.s <<EOF
4260 .section .rodata,"a",@progbits
4262 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4267 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4268 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4269 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4270 if test -s conftest.nm
4272 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4274 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4275 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4277 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4278 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4279 cat conftest.nm >&AS_MESSAGE_LOG_FD
4280 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4281 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4284 AC_MSG_RESULT(test failed)
4285 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4286 cat conftest.s >&AS_MESSAGE_LOG_FD
4287 AC_MSG_WARN([[see `config.log' for details]])
4289 rm -f conftest.s conftest.o conftest.elf conftest.nm
4293 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4294 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4295 [-no-mul-bug-abort], [.text],,
4296 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4297 [Define if your assembler supports the -no-mul-bug-abort option.])])
4301 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4303 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4304 [Define if your assembler supports -relax option.])])
4306 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4307 gcc_cv_as_sparc_gotdata_op,,
4314 sethi %gdop_hix22(foo), %g1
4315 xor %g1, %gdop_lox10(foo), %g1
4316 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4317 [if test x$gcc_cv_ld != x \
4318 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4319 if test x$gcc_cv_objdump != x; then
4320 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4321 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4322 gcc_cv_as_sparc_gotdata_op=no
4324 gcc_cv_as_sparc_gotdata_op=yes
4329 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4330 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4332 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4333 gcc_cv_as_sparc_ua_pcrel,,
4341 .uaword %r_disp32(foo)],
4342 [if test x$gcc_cv_ld != x \
4343 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4344 gcc_cv_as_sparc_ua_pcrel=yes
4347 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4348 [Define if your assembler and linker support unaligned PC relative relocs.])
4350 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4351 gcc_cv_as_sparc_ua_pcrel_hidden,,
4356 .uaword %r_disp32(foo)
4357 .byte 0x32, 0x33, 0x34
4362 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4363 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4364 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4365 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4366 if $gcc_cv_objdump -R conftest 2> /dev/null \
4367 | grep 'DISP32' > /dev/null 2>&1; then
4370 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4374 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4375 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4376 ]) # unaligned pcrel relocs
4378 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4379 gcc_cv_as_sparc_offsetable_lo10,,
4382 or %g1, %lo(ab) + 12, %g1
4383 or %g1, %lo(ab + 12), %g1],
4384 [if test x$gcc_cv_objdump != x \
4385 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4386 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4387 gcc_cv_as_sparc_offsetable_lo10=yes
4389 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4390 [Define if your assembler supports offsetable %lo().])])
4392 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4393 gcc_cv_as_sparc_fmaf,,
4396 .register %g2, #scratch
4397 .register %g3, #scratch
4399 fmaddd %f0, %f2, %f4, %f6
4400 addxccc %g1, %g2, %g3
4401 fsrl32 %f2, %f4, %f8
4402 fnaddd %f10, %f12, %f14],,
4403 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4404 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4406 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4407 gcc_cv_as_sparc_sparc4,,
4410 .register %g2, #scratch
4411 .register %g3, #scratch
4414 1: cwbneg %g2, %g3, 1f
4417 aes_kexpand0 %f4, %f6, %f8
4418 des_round %f38, %f40, %f42, %f44
4419 camellia_f %f54, %f56, %f58, %f60
4420 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4421 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4422 [Define if your assembler supports SPARC4 instructions.])])
4424 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4425 gcc_cv_as_sparc_sparc5,,
4428 .register %g2, #scratch
4429 .register %g3, #scratch
4432 fpadd8 %f0, %f2, %f4],,
4433 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4434 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4436 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4437 gcc_cv_as_sparc_sparc6,,
4440 .register %g2, #scratch
4441 .register %g3, #scratch
4444 fpsll64x %f0, %f2, %f4],,
4445 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4446 [Define if your assembler supports SPARC6 instructions.])])
4448 gcc_GAS_CHECK_FEATURE([LEON instructions],
4449 gcc_cv_as_sparc_leon,,
4452 .register %g2, #scratch
4453 .register %g3, #scratch
4457 casa [[%g2]] 0xb, %g3, %g1],,
4458 [AC_DEFINE(HAVE_AS_LEON, 1,
4459 [Define if your assembler supports LEON instructions.])])
4463 i[34567]86-*-* | x86_64-*-*)
4467 # Full C++ conformance when using a shared libstdc++-v3 requires some
4468 # support from the Cygwin DLL, which in more recent versions exports
4469 # wrappers to aid in interposing and redirecting operators new, delete,
4470 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4471 # are configuring for a version of Cygwin that exports the wrappers.
4472 if test x$host = x$target && test x$host_cpu = xi686; then
4473 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4475 # Can't check presence of libc functions during cross-compile, so
4476 # we just have to assume we're building for an up-to-date target.
4477 gcc_ac_cygwin_dll_wrappers=yes
4479 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4480 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4481 [Define if you want to generate code by default that assumes that the
4482 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4485 cygwin* | pe | mingw32*)
4486 # Recent binutils allows the three-operand form of ".comm" on PE. This
4487 # definition is used unconditionally to initialise the default state of
4488 # the target option variable that governs usage of the feature.
4489 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4490 [2,19,52],,[.comm foo,1,32])
4491 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4492 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4493 [Define if your assembler supports specifying the alignment
4494 of objects allocated using the GAS .comm command.])
4495 # Used for DWARF 2 in PE
4496 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4497 gcc_cv_as_ix86_pe_secrel32,
4503 [if test x$gcc_cv_ld != x \
4504 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4505 gcc_cv_as_ix86_pe_secrel32=yes
4508 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4509 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4510 # Test if the assembler supports the extended form of the .section
4511 # directive that specifies section alignment. LTO support uses this,
4512 # but normally only after installation, so we warn but don't fail the
4513 # configure if LTO is enabled but the assembler does not support it.
4514 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4515 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4516 if test x$gcc_cv_as_section_has_align != xyes; then
4517 case ",$enable_languages," in
4519 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4526 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4527 [-xbrace_comment=no], [.text],,
4528 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4529 [Define if your assembler supports -xbrace_comment option.])])
4531 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4532 gcc_cv_as_ix86_filds,,,
4533 [filds (%ebp); fists (%ebp)],,
4534 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4535 [Define if your assembler uses filds and fists mnemonics.])])
4537 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4538 gcc_cv_as_ix86_fildq,,,
4539 [fildq (%ebp); fistpq (%ebp)],,
4540 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4541 [Define if your assembler uses fildq and fistq mnemonics.])])
4543 gcc_GAS_CHECK_FEATURE([cmov syntax],
4544 gcc_cv_as_ix86_cmov_sun_syntax,,,
4545 [cmovl.l %edx, %eax],,
4546 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4547 [Define if your assembler supports the Sun syntax for cmov.])])
4549 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4550 gcc_cv_as_ix86_ffreep,,,
4552 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4553 [Define if your assembler supports the ffreep mnemonic.])])
4555 gcc_GAS_CHECK_FEATURE([.quad directive],
4556 gcc_cv_as_ix86_quad,,,
4558 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4559 [Define if your assembler supports the .quad directive.])])
4561 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4562 gcc_cv_as_ix86_sahf,,,
4565 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4566 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4568 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4569 gcc_cv_as_ix86_interunit_movq,,,
4573 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4574 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4575 [Define if your assembler supports interunit movq mnemonic.])
4577 gcc_GAS_CHECK_FEATURE([hle prefixes],
4578 gcc_cv_as_ix86_hle,,,
4579 [lock xacquire cmpxchg %esi, (%ecx)],,
4580 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4581 [Define if your assembler supports HLE prefixes.])])
4583 gcc_GAS_CHECK_FEATURE([swap suffix],
4584 gcc_cv_as_ix86_swap,,,
4585 [movl.s %esp, %ebp],,
4586 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4587 [Define if your assembler supports the swap suffix.])])
4589 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4590 gcc_cv_as_ix86_diff_sect_delta,,,
4598 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4599 [Define if your assembler supports the subtraction of symbols in different sections.])])
4601 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4602 gcc_cv_as_ix86_rep_lock_prefix,,,
4608 lock addl %edi, (%eax,%esi)
4609 lock orl $0, (%esp)],,
4610 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4611 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4613 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4614 gcc_cv_as_ix86_ud2,,,
4616 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4617 [Define if your assembler supports the 'ud2' mnemonic.])])
4619 # Enforce 32-bit output with gas and gld.
4620 if test x$gas = xyes; then
4621 as_ix86_gas_32_opt="--32"
4623 if echo "$ld_ver" | grep GNU > /dev/null; then
4624 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4625 ld_ix86_gld_32_opt="-melf_i386_sol2"
4627 ld_ix86_gld_32_opt="-melf_i386"
4631 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4632 gcc_cv_as_ix86_tlsgdplt,,
4633 [$as_ix86_gas_32_opt],
4634 [call tls_gd@tlsgdplt],
4635 [if test x$gcc_cv_ld != x \
4636 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4637 gcc_cv_as_ix86_tlsgdplt=yes
4640 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4641 [Define if your assembler and linker support @tlsgdplt.])])
4644 .section .tdata,"aw'$tls_section_flag'",@progbits
4646 .section .text,"ax",@progbits
4647 call tls_ld@tlsldmplt'
4649 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4650 gcc_cv_as_ix86_tlsldmplt,,
4651 [$as_ix86_gas_32_opt],
4653 [if test x$gcc_cv_ld != x \
4654 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4655 gcc_cv_as_ix86_tlsldmplt=yes
4658 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4659 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4660 [Define to 1 if your assembler and linker support @tlsldmplt.])
4663 .section .text,"ax",@progbits
4665 .type _start, @function
4667 leal value@tlsldm(%ebx), %eax
4668 call ___tls_get_addr@plt
4670 .section .tdata,"aw'$tls_section_flag'",@progbits
4671 .type value, @object
4673 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4674 gcc_cv_as_ix86_tlsldm,,
4675 [$as_ix86_gas_32_opt],
4677 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4678 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4679 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4680 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4681 gcc_cv_as_ix86_tlsldm=yes
4685 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4686 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4687 [Define to 1 if your assembler and linker support @tlsldm.])
4698 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4699 gcc_cv_as_ix86_got32x,,
4700 [$as_ix86_gas_32_opt],
4702 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4703 && test x$gcc_cv_readelf != x \
4704 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4705 | grep R_386_GOT32X > /dev/null 2>&1 \
4706 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4707 if $gcc_cv_objdump -dw conftest 2>&1 \
4708 | grep 0xffffff > /dev/null 2>&1; then
4709 gcc_cv_as_ix86_got32x=no
4711 gcc_cv_as_ix86_got32x=yes
4715 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4716 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4717 [Define 0/1 if your assembler and linker support @GOT.])
4719 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4720 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4721 [$as_ix86_gas_32_opt],
4727 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4728 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4729 [Define true if the assembler supports '.long foo@GOTOFF'.])
4732 .section .text,"ax",@progbits
4734 .type _start, @function
4736 leal ld@tlsldm(%ecx), %eax
4737 call *___tls_get_addr@GOT(%ecx)
4738 leal gd@tlsgd(%ecx), %eax
4739 call *___tls_get_addr@GOT(%ecx)
4741 .section .tdata,"aw'$tls_section_flag'",@progbits
4749 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4750 gcc_cv_as_ix86_tls_get_addr_via_got,,
4751 [$as_ix86_gas_32_opt],
4753 [if test x$gcc_cv_ld != x \
4754 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4755 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4758 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4759 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4760 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4764 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4765 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4767 addl r15 = @ltoffx(x#), gp
4769 ld8.mov r16 = [[r15]], x#
4771 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4772 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4780 gcc_GAS_CHECK_FEATURE([.machine directive support],
4781 gcc_cv_as_machine_directive,,,
4782 [ .machine ppc7400])
4783 if test x$gcc_cv_as_machine_directive != xyes; then
4784 echo "*** This target requires an assembler supporting \".machine\"" >&2
4785 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4786 test x$build = x$target && exit 1
4792 *-*-aix*) conftest_s=' .machine "pwr5"
4795 *-*-darwin*) conftest_s=' .text
4797 *) conftest_s=' .machine power4
4802 gcc_GAS_CHECK_FEATURE([mfcr field support],
4803 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4805 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4806 [Define if your assembler supports mfcr field.])])
4809 *-*-aix*) conftest_s=' .csect .text[[PR]]
4811 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4815 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4816 *) conftest_s=' .text
4818 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4821 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4822 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4824 [AC_DEFINE(HAVE_AS_REL16, 1,
4825 [Define if your assembler supports R_PPC_REL16 relocs.])])
4828 *-*-aix*) conftest_s=' .machine "pwr7"
4831 *) conftest_s=' .machine power7
4836 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4837 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4839 [AC_DEFINE(HAVE_AS_VSX, 1,
4840 [Define if your assembler supports VSX instructions.])])
4842 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4843 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4844 [.gnu_attribute 4,1],,
4845 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4846 [Define if your assembler supports .gnu_attribute.])])
4848 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4849 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4850 [ .reloc .,R_PPC64_ENTRY; nop],,
4851 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4852 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4854 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4855 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4856 [ .reloc .,R_PPC_PLTSEQ; nop],,
4857 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4858 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4862 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4863 gcc_cv_as_aix_ref, [2,21,0],,
4864 [ .csect stuff[[rw]]
4870 [AC_DEFINE(HAVE_AS_REF, 1,
4871 [Define if your assembler supports .ref])])
4873 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4874 gcc_cv_as_aix_dwloc, [2,21,0],,
4879 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4880 [Define if your assembler supports AIX debug frame section label reference.])])
4886 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4887 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4888 [ lw $4,%gp_rel(foo)($4)],,
4889 [if test x$target_cpu_default = x
4890 then target_cpu_default=MASK_EXPLICIT_RELOCS
4891 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4894 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4895 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4896 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4897 [Define if the assembler understands -mno-shared.])])
4899 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4900 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4901 [.gnu_attribute 4,1],,
4902 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4903 [Define if your assembler supports .gnu_attribute.])])
4905 gcc_GAS_CHECK_FEATURE([.module support],
4906 gcc_cv_as_mips_dot_module,,[-32],
4909 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4910 [Define if your assembler supports .module.])])
4911 if test x$gcc_cv_as_mips_dot_module = xno \
4912 && test x$with_fp_32 != x; then
4914 [Requesting --with-fp-32= requires assembler support for .module.])
4917 gcc_GAS_CHECK_FEATURE([.micromips support],
4918 gcc_cv_as_micromips_support,,[--fatal-warnings],
4920 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4921 [Define if your assembler supports the .set micromips directive])])
4923 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4924 gcc_cv_as_mips_dtprelword, [2,18,0],,
4925 [.section .tdata,"awT",@progbits
4929 .dtprelword x+0x8000],,
4930 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4931 [Define if your assembler supports .dtprelword.])])
4933 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4934 gcc_cv_as_mips_dspr1_mult,,,
4944 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4945 [Define if your assembler supports DSPR1 mult.])])
4947 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4948 gcc_cv_as_ld_jalr_reloc=no
4949 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4950 if test $in_tree_ld = yes ; then
4951 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4952 && test $in_tree_ld_is_elf = yes; then
4953 gcc_cv_as_ld_jalr_reloc=yes
4955 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4956 echo ' .ent x' > conftest.s
4957 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4958 echo ' lw $25,%call16(y)($28)' >> conftest.s
4959 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4960 echo '1: jalr $25' >> conftest.s
4961 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4962 echo '1: jalr $25' >> conftest.s
4963 echo ' .end x' >> conftest.s
4964 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4965 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4966 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4967 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4968 gcc_cv_as_ld_jalr_reloc=yes
4974 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4975 if test x$target_cpu_default = x; then
4976 target_cpu_default=MASK_RELAX_PIC_CALLS
4978 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4981 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4983 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4984 [gcc_cv_ld_mips_personality_relaxation],
4985 [gcc_cv_ld_mips_personality_relaxation=no
4986 if test $in_tree_ld = yes ; then
4987 if test "$gcc_cv_gld_major_version" -eq 2 \
4988 -a "$gcc_cv_gld_minor_version" -ge 21 \
4989 -o "$gcc_cv_gld_major_version" -gt 2; then
4990 gcc_cv_ld_mips_personality_relaxation=yes
4992 elif test x$gcc_cv_as != x \
4993 -a x$gcc_cv_ld != x \
4994 -a x$gcc_cv_readelf != x ; then
4995 cat > conftest.s <<EOF
4997 .cfi_personality 0x80,indirect_ptr
5004 .section .data,"aw",@progbits
5008 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
5009 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
5010 if $gcc_cv_readelf -d conftest 2>&1 \
5011 | grep TEXTREL > /dev/null 2>&1; then
5013 elif $gcc_cv_readelf --relocs conftest 2>&1 \
5014 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
5017 gcc_cv_ld_mips_personality_relaxation=yes
5021 rm -f conftest.s conftest.o conftest])
5022 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
5023 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
5024 [Define if your linker can relax absolute .eh_frame personality
5025 pointers into PC-relative form.])
5028 gcc_GAS_CHECK_FEATURE([-mnan= support],
5029 gcc_cv_as_mips_nan,,
5031 [AC_DEFINE(HAVE_AS_NAN, 1,
5032 [Define if the assembler understands -mnan=.])])
5033 if test x$gcc_cv_as_mips_nan = xno \
5034 && test x$with_nan != x; then
5036 [Requesting --with-nan= requires assembler support for -mnan=])
5040 # Earlier GAS versions generically support .gnu_attribute, but the
5041 # msp430 assembler will not do anything with it.
5042 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5043 gcc_cv_as_msp430_gnu_attribute, [2,33,50],,
5044 [.gnu_attribute 4,1],,
5045 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5046 [Define if your assembler supports .gnu_attribute.])])
5047 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support],
5048 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],,
5049 [.mspabi_attribute 4,2],,
5050 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1,
5051 [Define if your assembler supports .mspabi_attribute.])])
5052 if test x$enable_newlib_nano_formatted_io = xyes; then
5053 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been
5054 configured with --enable-newlib-nano-formatted-io.])
5058 # Versions 2.33 and earlier lacked support for the %gotoff relocation
5059 # syntax that is documented in the ABI specification.
5060 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data],
5061 gcc_cv_as_nios2_gotoff_relocation,,,
5064 .long %gotoff(foo)],,
5065 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1,
5066 [Define if your assembler supports %gotoff relocation syntax.])])
5069 gcc_GAS_CHECK_FEATURE([.attribute support],
5070 gcc_cv_as_riscv_attribute, [2,32,0],,
5071 [.attribute stack_align,4],,
5072 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1,
5073 [Define if your assembler supports .attribute.])])
5076 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
5077 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
5078 [.gnu_attribute 8,1],,
5079 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
5080 [Define if your assembler supports .gnu_attribute.])])
5081 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
5082 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
5087 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
5088 [Define if your assembler supports .machine and .machinemode.])])
5089 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
5090 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
5091 [ .machine z13+vx ],,
5092 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
5093 [Define if your assembler supports architecture modifiers.])])
5094 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
5095 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
5096 [ vl %v24,0(%r15),3 ],,
5097 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
5098 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
5099 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13],
5100 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13],
5101 [ vl %v24,0(%r15),3 ],,
5102 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1,
5103 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])])
5108 # Mips and HP-UX need the GNU assembler.
5109 # Linux on IA64 might be able to use the Intel assembler.
5112 mips*-*-* | *-*-hpux* )
5113 if test x$gas_flag = xyes \
5114 || test x"$host" != x"$build" \
5115 || test ! -x "$gcc_cv_as" \
5116 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
5119 echo "*** This configuration requires the GNU assembler" >&2
5125 # ??? Not all targets support dwarf2 debug_line, even within a version
5126 # of gas. Moreover, we need to emit a valid instruction to trigger any
5127 # info to the output file. So, as supported targets are added to gas 2.11,
5128 # add some instruction here to (also) show we expect this might work.
5129 # ??? Once 2.11 is released, probably need to add first known working
5130 # version to the per-target configury.
5132 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
5133 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \
5134 | tilegx | tilepro | visium | xstormy16 | xtensa)
5144 if test x"$insn" != x; then
5146 .file 1 \"conftest.s\"
5149 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
5150 gcc_cv_as_dwarf2_debug_line,
5151 [elf,2,11,0],, [$conftest_s],
5152 [if test x$gcc_cv_objdump != x \
5153 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
5154 | grep debug_line > /dev/null 2>&1; then
5155 gcc_cv_as_dwarf2_debug_line=yes
5156 elif test x$gcc_cv_otool != x \
5157 && $gcc_cv_otool -l conftest.o 2> /dev/null \
5158 | grep debug_line > /dev/null 2>&1; then
5159 gcc_cv_as_dwarf2_debug_line=yes
5162 # The .debug_line file table must be in the exact order that
5163 # we specified the files, since these indices are also used
5164 # by DW_AT_decl_file. Approximate this test by testing if
5165 # the assembler bitches if the same index is assigned twice.
5166 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
5167 gcc_cv_as_dwarf2_file_buggy,,,
5171 if test $gcc_cv_as_dwarf2_debug_line = yes \
5172 && test $gcc_cv_as_dwarf2_file_buggy = no; then
5173 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
5174 [Define if your assembler supports dwarf2 .file/.loc directives,
5175 and preserves file table indices exactly as given.])
5177 if test $gcc_cv_as_leb128 = yes; then
5179 .file 1 \"conftest.s\"
5180 .loc 1 3 0 view .LVU1
5186 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
5187 gcc_cv_as_dwarf2_debug_view,
5188 [elf,2,27,0],,[$conftest_s],,
5189 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5190 [Define if your assembler supports views in dwarf2 .loc directives.])])
5194 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5195 gcc_cv_as_gdwarf2_flag,
5196 [elf,2,11,0], [--gdwarf2], [$insn],,
5197 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5198 [Define if your assembler supports the --gdwarf2 option.])])
5200 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option],
5201 gcc_cv_as_gdwarf_5_flag,
5202 [elf,2,36,0], [--gdwarf-5], [$insn],,
5203 [AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1,
5204 [Define if your assembler supports the --gdwarf-5 option.])])
5206 dwarf4_debug_info_size=0x46
5207 dwarf4_high_pc_form=7
5208 dwarf4_debug_aranges_size=0x2c
5210 for dwarf4_addr_size in 8 4; do
5217 .type foo, %function
5226 .section .debug_info,\"\",%progbits
5228 .4byte $dwarf4_debug_info_size
5230 .4byte .Ldebug_abbrev0
5231 .byte 0x$dwarf4_addr_size
5233 .ascii \"GNU C17\\0\"
5237 .${dwarf4_addr_size}byte .Ltext0
5238 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5239 .4byte .Ldebug_line0
5245 .${dwarf4_addr_size}byte .LFB0
5246 .${dwarf4_addr_size}byte .LFE0-.LFB0
5250 .section .debug_abbrev,\"\",%progbits
5266 .byte 0x$dwarf4_high_pc_form
5287 .byte 0x$dwarf4_high_pc_form
5293 .section .debug_aranges,\"\",%progbits
5294 .4byte $dwarf4_debug_aranges_size
5296 .4byte .Ldebug_info0
5301 .${dwarf4_addr_size}byte .Ltext0
5302 .${dwarf4_addr_size}byte .Letext0-.Ltext0
5303 .${dwarf4_addr_size}byte 0
5304 .${dwarf4_addr_size}byte 0
5305 .section .debug_line,\"\",%progbits
5307 .4byte .LELT0-.LSLT0
5310 .4byte .LELTP0-.LASLTP0
5338 .byte 0x$dwarf4_line_sz
5340 .${dwarf4_addr_size}byte .LM1
5345 .byte 0x$dwarf4_line_sz
5347 .${dwarf4_addr_size}byte .LM2
5352 .byte 0x$dwarf4_line_sz
5354 .${dwarf4_addr_size}byte .Letext0
5359 .section .debug_str,\"\",%progbits
5363 if test $dwarf4_addr_size = 4; then
5364 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line],
5365 gcc_cv_as_debug_line_32_flag,
5366 [elf,2,36,0], [], [$conftest_s],,
5367 [dwarf4_success=yes])
5369 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line],
5370 gcc_cv_as_debug_line_64_flag,
5371 [elf,2,36,0], [], [$conftest_s],,
5372 [dwarf4_success=yes])
5374 if test $dwarf4_success = yes; then
5376 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line],
5377 gcc_cv_as_dwarf_4_debug_line_flag,
5378 [elf,2,36,0], [--gdwarf-4], [$conftest_s],,
5379 [dwarf4_success=yes])
5382 dwarf4_debug_info_size=0x36
5383 dwarf4_high_pc_form=6
5384 dwarf4_debug_aranges_size=0x1c
5388 if test $dwarf4_success = yes; then
5406 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker],
5407 gcc_cv_as_dwarf_4_app_flag,,
5408 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes])
5411 if test $dwarf4_success = yes; then
5415 .type foo, %function
5421 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources],
5422 gcc_cv_as_working_gdwarf_n_flag,,
5426 if test x$gcc_cv_readelf != x \
5427 && $gcc_cv_readelf -w conftest.o 2>&1 \
5428 | grep conftest.s > /dev/null 2>&1; then
5429 gcc_cv_as_working_gdwarf_n_flag=no
5431 gcc_cv_as_working_gdwarf_n_flag=yes
5433 changequote([,])dnl])
5434 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then
5435 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1,
5436 [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with
5437 compiler generated .debug_line.])
5441 gcc_GAS_CHECK_FEATURE([--gstabs option],
5442 gcc_cv_as_gstabs_flag,
5443 [elf,2,11,0], [--gstabs], [$insn],,
5444 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5445 [Define if your assembler supports the --gstabs option.])])
5447 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5448 gcc_cv_as_debug_prefix_map_flag,
5449 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5450 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5451 [Define if your assembler supports the --debug-prefix-map option.])])
5454 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5455 gcc_cv_as_compress_debug,,,,
5456 [# gas compiled without zlib cannot compress debug sections and warns
5457 # about it, but still exits successfully. So check for this, too.
5458 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5460 gcc_cv_as_compress_debug=0
5461 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5462 # defaulting to the ELF gABI format.
5463 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5465 gcc_cv_as_compress_debug=2
5466 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5467 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5468 # Before binutils 2.26, gas only supported --compress-debug-options and
5469 # emitted the traditional GNU format.
5470 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5472 gcc_cv_as_compress_debug=1
5473 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5474 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5476 gcc_cv_as_compress_debug=0
5478 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5479 [Define to the level of your assembler's compressed debug section support.])
5480 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5481 [Define to the assembler option to enable compressed debug sections.])
5482 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5483 [Define to the assembler option to disable compressed debug sections.])
5485 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5488 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5489 [Define if your assembler supports .lcomm with an alignment field.])])
5491 if test x$with_sysroot = x && test x$host = x$target \
5492 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5493 && test "$prefix" != "NONE"; then
5494 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5495 [Define to PREFIX/include if cpp should also search that directory.])
5498 # Determine the version of glibc, if any, used on the target.
5499 AC_MSG_CHECKING([for target glibc version])
5500 AC_ARG_WITH([glibc-version],
5501 [AS_HELP_STRING([--with-glibc-version=M.N],
5502 [assume GCC used with glibc version M.N or later])], [
5503 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5504 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5505 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5507 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5509 glibc_version_major=0
5510 glibc_version_minor=0
5511 [if test -f $target_header_dir/features.h \
5512 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5513 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5514 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5515 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5517 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5518 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5519 [GNU C Library major version number used on the target, or 0.])
5520 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5521 [GNU C Library minor version number used on the target, or 0.])
5523 AC_ARG_ENABLE(gnu-unique-object,
5524 [AS_HELP_STRING([--enable-gnu-unique-object],
5525 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5526 [case $enable_gnu_unique_object in
5528 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5529 Valid choices are 'yes' and 'no'.]) ;;
5531 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5533 [.type foo, '$target_type_format_char'gnu_unique_object],,
5534 # We need to unquote above to to use the definition from config.gcc.
5535 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5536 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5538 if test x$enable_gnu_unique_object = xyes; then
5539 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5540 [Define if your assembler supports @gnu_unique_object.])
5543 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5544 [gcc_cv_as_line_zero],
5545 [gcc_cv_as_line_zero=no
5546 if test $in_tree_gas = yes; then
5547 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5548 elif test "x$gcc_cv_as" != x; then
5549 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5550 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5551 test "x`cat conftest.out`" = x
5553 gcc_cv_as_line_zero=yes
5555 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5556 cat conftest.s >&AS_MESSAGE_LOG_FD
5557 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5558 cat conftest.out >&AS_MESSAGE_LOG_FD
5560 rm -f conftest.o conftest.s conftest.out
5562 if test "x$gcc_cv_as_line_zero" = xyes; then
5563 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5564 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5567 AC_MSG_CHECKING(support for thin archives)
5568 thin_archive_support=no
5569 echo 'int main (void) { return 0; }' > conftest.c
5570 if ($AR --version | sed 1q | grep "GNU ar" \
5571 && $CC $CFLAGS -c conftest.c \
5572 && $AR rcT conftest.a conftest.o \
5573 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5574 thin_archive_support=yes
5576 rm -f conftest.c conftest.o conftest.a conftest
5577 AC_MSG_RESULT($thin_archive_support)
5578 AC_SUBST(thin_archive_support)
5580 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5581 gcc_cv_ld_eh_frame_hdr=no
5582 if test $in_tree_ld = yes ; then
5583 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5584 && test $in_tree_ld_is_elf = yes; then
5585 gcc_cv_ld_eh_frame_hdr=yes
5587 elif test x$gcc_cv_ld != x; then
5588 if echo "$ld_ver" | grep GNU > /dev/null; then
5589 # Check if linker supports --eh-frame-hdr option
5590 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5591 gcc_cv_ld_eh_frame_hdr=yes
5596 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5597 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5598 gcc_cv_ld_eh_frame_hdr=yes
5604 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5605 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5606 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5607 [Define if your linker supports .eh_frame_hdr.])
5609 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5611 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5612 gcc_cv_ld_eh_frame_ciev3=no
5613 if test $in_tree_ld = yes ; then
5614 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5615 && test $in_tree_ld_is_elf = yes; then
5616 gcc_cv_ld_eh_frame_ciev3=yes
5618 elif test x$gcc_cv_ld != x; then
5619 if echo "$ld_ver" | grep GNU > /dev/null; then
5620 gcc_cv_ld_eh_frame_ciev3=yes
5621 if test 0"$ld_date" -lt 20040513; then
5622 if test -n "$ld_date"; then
5623 # If there was date string, but was earlier than 2004-05-13, fail
5624 gcc_cv_ld_eh_frame_ciev3=no
5625 elif test "$ld_vers_major" -lt 2; then
5626 gcc_cv_ld_eh_frame_ciev3=no
5627 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5628 gcc_cv_ld_eh_frame_ciev3=no
5634 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5635 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5636 gcc_cv_ld_eh_frame_ciev3=yes
5642 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5643 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5644 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5645 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5647 AC_MSG_CHECKING(linker position independent executable support)
5649 if test $in_tree_ld = yes ; then
5651 # Full PIE support on Solaris was only introduced in gld 2.26.
5652 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5653 *) gcc_gld_pie_min_version=15 ;;
5655 if test "$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 \
5656 && test $in_tree_ld_is_elf = yes; then
5659 elif test x$gcc_cv_ld != x; then
5660 # Check if linker supports -pie option
5661 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5665 if echo "$ld_ver" | grep GNU > /dev/null \
5666 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5673 *-*-solaris2.1[[1-9]]*)
5674 # Solaris 11.3 added PIE support.
5675 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5682 if test x"$gcc_cv_ld_pie" = xyes; then
5683 AC_DEFINE(HAVE_LD_PIE, 1,
5684 [Define if your linker supports PIE option.])
5686 AC_MSG_RESULT($gcc_cv_ld_pie)
5688 AC_MSG_CHECKING(linker PIE support with copy reloc)
5689 gcc_cv_ld_pie_copyreloc=no
5690 if test $gcc_cv_ld_pie = yes ; then
5691 if test $in_tree_ld = yes ; then
5692 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5693 gcc_cv_ld_pie_copyreloc=yes
5695 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5696 # Check if linker supports -pie option with copy reloc
5698 i?86-*-linux* | x86_64-*-linux*)
5699 cat > conftest1.s <<EOF
5702 .type a_glob, @object
5707 cat > conftest2.s <<EOF
5710 .type main, @function
5712 movl %eax, a_glob(%rip)
5715 .section .data.rel,"aw",@progbits
5720 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5721 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5722 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5723 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5724 gcc_cv_ld_pie_copyreloc=yes
5726 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5731 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5732 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5733 [Define 0/1 if your linker supports -pie option with copy reloc.])
5734 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5736 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5737 gcc_cv_ld_eh_gc_sections=no
5738 if test $in_tree_ld = yes ; then
5739 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5740 && test $in_tree_ld_is_elf = yes; then
5741 gcc_cv_ld_eh_gc_sections=yes
5743 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5744 cat > conftest.s <<EOF
5747 .type _start, @function
5750 .size _start, .-_start
5751 .section .text.foo,"ax",@progbits
5752 .type foo, @function
5756 .section .gcc_except_table.foo,"a",@progbits
5759 .section .eh_frame,"a",@progbits
5762 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5763 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5764 | grep "gc-sections option ignored" > /dev/null; then
5765 gcc_cv_ld_eh_gc_sections=no
5766 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5767 | grep gcc_except_table > /dev/null; then
5768 gcc_cv_ld_eh_gc_sections=yes
5769 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5770 if test x$gcc_cv_as_comdat_group != xyes; then
5771 gcc_cv_ld_eh_gc_sections=no
5772 cat > conftest.s <<EOF
5775 .type _start, @function
5778 .size _start, .-_start
5779 .section .gnu.linkonce.t.foo,"ax",@progbits
5780 .type foo, @function
5784 .section .gcc_except_table.foo,"a",@progbits
5787 .section .eh_frame,"a",@progbits
5790 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5791 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5792 | grep "gc-sections option ignored" > /dev/null; then
5793 gcc_cv_ld_eh_gc_sections=no
5794 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5795 | grep gcc_except_table > /dev/null; then
5796 gcc_cv_ld_eh_gc_sections=yes
5802 rm -f conftest.s conftest.o conftest
5806 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5807 gcc_cv_ld_eh_gc_sections=no
5810 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5811 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5812 [Define if your linker supports garbage collection of
5813 sections in presence of EH frames.])
5815 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5817 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5818 gcc_cv_ld_eh_gc_sections_bug=no
5819 if test $in_tree_ld = yes ; then
5820 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5821 && test $in_tree_ld_is_elf = yes; then
5822 gcc_cv_ld_eh_gc_sections_bug=yes
5824 elif test x$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
5825 gcc_cv_ld_eh_gc_sections_bug=yes
5826 cat > conftest.s <<EOF
5829 .type _start, @function
5832 .size _start, .-_start
5833 .section .text.startup.foo,"ax",@progbits
5834 .type foo, @function
5838 .section .gcc_except_table.foo,"a",@progbits
5841 .section .eh_frame,"a",@progbits
5844 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5845 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5846 | grep "gc-sections option ignored" > /dev/null; then
5848 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5849 | grep gcc_except_table > /dev/null; then
5850 gcc_cv_ld_eh_gc_sections_bug=no
5853 rm -f conftest.s conftest.o conftest
5855 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5856 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5857 [Define if your linker has buggy garbage collection of
5858 sections support when .text.startup.foo like sections are used.])
5860 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5862 AC_MSG_CHECKING(linker for compressed debug sections)
5863 # gold/gld support compressed debug sections since binutils 2.19/2.21
5864 # In binutils 2.26, gld gained support for the ELF gABI format.
5865 if test $in_tree_ld = yes ; then
5866 gcc_cv_ld_compress_debug=0
5867 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5868 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5869 gcc_cv_ld_compress_debug=2
5870 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5871 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5872 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5873 gcc_cv_ld_compress_debug=3
5874 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5875 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5876 && test $in_tree_ld_is_elf = yes; then
5877 gcc_cv_ld_compress_debug=1
5879 elif echo "$ld_ver" | grep GNU > /dev/null; then
5880 if test "$ld_vers_major" -lt 2 \
5881 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5882 gcc_cv_ld_compress_debug=0
5883 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5884 gcc_cv_ld_compress_debug=1
5886 gcc_cv_ld_compress_debug=3
5887 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5889 if test $ld_is_gold = yes; then
5890 gcc_cv_ld_compress_debug=2
5891 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5897 # Introduced in Solaris 11.2.
5898 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5899 gcc_cv_ld_compress_debug=3
5900 gcc_cv_ld_compress_debug_option="-z compress-sections"
5902 gcc_cv_ld_compress_debug=0
5906 # Assume linkers other than GNU ld don't support compessed debug
5908 gcc_cv_ld_compress_debug=0
5913 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5914 [Define to the level of your linker's compressed debug section support.])
5915 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5916 [Define to the linker option to enable compressed debug sections.])
5917 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5919 if test x"$ld64_flag" = x"yes"; then
5921 # Set defaults for possibly untestable items.
5922 gcc_cv_ld64_export_dynamic=0
5924 if test "$build" = "$host"; then
5930 # On Darwin, because of FAT library support, it is often possible to execute
5931 # exes from compatible archs even when the host differs from the build system.
5932 case "$build","$host" in
5933 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5938 # If the configurer specified a minimum ld64 version to be supported, then use
5939 # that to determine feature support.
5940 if test x"${gcc_cv_ld64_version}" != x; then
5941 AC_MSG_CHECKING(ld64 specified version)
5942 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5943 AC_MSG_RESULT($gcc_cv_ld64_major)
5944 if test "$gcc_cv_ld64_major" -ge 236; then
5945 gcc_cv_ld64_export_dynamic=1
5947 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5948 # If the version was not specified, try to find it.
5949 AC_MSG_CHECKING(linker version)
5950 if test x"${gcc_cv_ld64_version}" = x; then
5951 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5953 AC_MSG_RESULT($gcc_cv_ld64_version)
5955 AC_MSG_CHECKING(linker for -export_dynamic support)
5956 gcc_cv_ld64_export_dynamic=1
5957 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5958 gcc_cv_ld64_export_dynamic=0
5960 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5963 if test x"${gcc_cv_ld64_version}" != x; then
5964 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5965 [Define to ld64 version.])
5968 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5969 [Define to 1 if ld64 supports '-export_dynamic'.])
5976 AC_CACHE_CHECK(linker --as-needed support,
5977 gcc_cv_ld_as_needed,
5978 [gcc_cv_ld_as_needed=no
5979 gcc_cv_ld_as_needed_option='--as-needed'
5980 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5981 if test $in_tree_ld = yes ; then
5982 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5983 && test $in_tree_ld_is_elf = yes; then
5984 gcc_cv_ld_as_needed=yes
5985 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5986 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5987 gcc_cv_ld_no_as_needed_option='--pop-state'
5990 elif test x$gcc_cv_ld != x; then
5991 # Check if linker supports --as-needed and --no-as-needed options
5992 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5993 gcc_cv_ld_as_needed=yes
5994 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5995 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5996 && echo "$ld_ver" | grep GNU > /dev/null \
5997 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5998 # Use these options only when both ld.bfd and ld.gold support
5999 # --push-state/--pop-state, which unfortunately wasn't added
6001 gcc_cv_ld_as_needed_option='--push-state --as-needed'
6002 gcc_cv_ld_no_as_needed_option='--pop-state'
6005 case "$target:$gnu_ld" in
6007 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
6009 gcc_cv_ld_as_needed=yes
6010 gcc_cv_ld_as_needed_option="-z ignore"
6011 gcc_cv_ld_no_as_needed_option="-z record"
6015 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
6016 # dl_iterate_phdr, i.e. since Solaris 11.
6018 *-*-solaris2.1[[1-9]]*)
6020 i?86-*-* | x86_64-*-*)
6021 if echo "$ld_ver" | grep GNU > /dev/null; then
6022 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
6023 gcc_cv_ld_as_needed=no
6029 gcc_cv_ld_as_needed=no
6033 if test x"$gcc_cv_ld_as_needed" = xyes; then
6034 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
6035 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
6036 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
6037 [Define to the linker option to ignore unused dependencies.])
6038 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
6039 [Define to the linker option to keep unused dependencies.])
6042 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
6043 saved_LDFLAGS="$LDFLAGS"
6044 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
6045 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
6046 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6047 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
6049 LDFLAGS="$saved_LDFLAGS"
6050 if test "x$gcc_cv_ld_clearcap" = xyes; then
6051 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
6052 [Define if the linker supports clearing hardware capabilities via mapfile.])
6053 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
6055 AC_MSG_RESULT($gcc_cv_ld_clearcap)
6061 emul_name="-melf32lppc"
6064 emul_name="-melf32ppc"
6067 AC_CACHE_CHECK(linker .gnu.attributes long double support,
6069 [gcc_cv_ld_ppc_attr=no
6070 if test x"$ld_is_gold" = xyes; then
6071 gcc_cv_ld_ppc_attr=yes
6072 elif test $in_tree_ld = yes ; then
6073 if test "$gcc_cv_gld_major_version" -eq 2 \
6074 -a "$gcc_cv_gld_minor_version" -ge 28 \
6075 -o "$gcc_cv_gld_major_version" -gt 2; then
6076 gcc_cv_ld_ppc_attr=yes
6078 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6079 # check that merging the long double .gnu_attribute doesn't warn
6080 cat > conftest1.s <<EOF
6083 cat > conftest2.s <<EOF
6086 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6087 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6088 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
6089 && test ! -s conftest.err; then
6090 gcc_cv_ld_ppc_attr=yes
6092 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
6095 if test x$gcc_cv_ld_ppc_attr = xyes; then
6096 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
6097 [Define if your PowerPC linker has .gnu.attributes long double support.])
6102 case "$target:$tm_file" in
6103 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
6106 emul_name="-melf64lppc"
6109 emul_name="-melf64ppc"
6112 emul_name="-melf64ppc_fbsd"
6115 AC_CACHE_CHECK(linker support for omitting dot symbols,
6116 gcc_cv_ld_no_dot_syms,
6117 [gcc_cv_ld_no_dot_syms=no
6118 if test x"$ld_is_gold" = xyes; then
6119 gcc_cv_ld_no_dot_syms=yes
6120 elif test $in_tree_ld = yes ; then
6121 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
6122 gcc_cv_ld_no_dot_syms=yes
6124 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6125 cat > conftest1.s <<EOF
6129 cat > conftest2.s <<EOF
6130 .section ".opd","aw"
6135 .quad .LEfoo,.TOC.@tocbase,0
6141 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
6142 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
6143 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
6144 gcc_cv_ld_no_dot_syms=yes
6146 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
6149 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
6150 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
6151 [Define if your PowerPC64 linker only needs function descriptor syms.])
6154 AC_CACHE_CHECK(linker large toc support,
6155 gcc_cv_ld_large_toc,
6156 [gcc_cv_ld_large_toc=no
6157 if test x"$ld_is_gold" = xyes; then
6158 gcc_cv_ld_large_toc=yes
6159 elif test $in_tree_ld = yes ; then
6160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
6161 gcc_cv_ld_large_toc=yes
6163 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
6164 cat > conftest.s <<EOF
6165 .section ".tbss","awT",@nobits
6171 addis 9,13,ie0@got@tprel@ha
6172 ld 9,ie0@got@tprel@l(9)
6174 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6175 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
6176 gcc_cv_ld_large_toc=yes
6178 rm -f conftest conftest.o conftest.s
6181 if test x"$gcc_cv_ld_large_toc" = xyes; then
6182 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6183 [Define if your PowerPC64 linker supports a large TOC.])
6186 AC_CACHE_CHECK(linker toc pointer alignment,
6187 gcc_cv_ld_toc_align,
6188 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
6189 cat > conftest.s <<EOF
6194 .section .data.rel.ro,"aw",@progbits
6199 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
6200 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
6201 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
6203 rm -f conftest conftest.o conftest.s
6206 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
6207 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
6208 [Define to .TOC. alignment forced by your linker.])
6215 AC_CACHE_CHECK(linker large toc support,
6216 gcc_cv_ld_large_toc,
6217 [gcc_cv_ld_large_toc=no
6218 if test x$gcc_cv_as != x ; then
6219 cat > conftest.s <<EOF
6229 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
6230 gcc_cv_ld_large_toc=yes
6232 rm -f conftest conftest.o conftest.s
6235 if test x"$gcc_cv_ld_large_toc" = xyes; then
6236 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
6237 [Define if your PowerPC64 linker supports a large TOC.])
6242 AC_CACHE_CHECK(linker --build-id support,
6244 [gcc_cv_ld_buildid=no
6245 if test $in_tree_ld = yes ; then
6246 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6247 "$gcc_cv_gld_minor_version" -ge 18 -o \
6248 "$gcc_cv_gld_major_version" -gt 2 \
6249 && test $in_tree_ld_is_elf = yes; then
6250 gcc_cv_ld_buildid=yes
6252 elif test x$gcc_cv_ld != x; then
6253 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
6254 gcc_cv_ld_buildid=yes
6257 if test x"$gcc_cv_ld_buildid" = xyes; then
6258 AC_DEFINE(HAVE_LD_BUILDID, 1,
6259 [Define if your linker supports --build-id.])
6262 AC_ARG_ENABLE(linker-build-id,
6263 [AS_HELP_STRING([--enable-linker-build-id],
6264 [compiler will always pass --build-id to linker])],
6266 enable_linker_build_id=no)
6268 if test x"$enable_linker_build_id" = xyes; then
6269 if test x"$gcc_cv_ld_buildid" = xyes; then
6270 AC_DEFINE(ENABLE_LD_BUILDID, 1,
6271 [Define if gcc should always pass --build-id to linker.])
6273 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
6277 # In binutils 2.21, GNU ld gained support for new emulations fully
6278 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
6279 AC_CACHE_CHECK(linker *_sol2 emulation support,
6280 gcc_cv_ld_sol2_emulation,
6281 [gcc_cv_ld_sol2_emulation=no
6282 if test $in_tree_ld = yes ; then
6283 if test "$gcc_cv_gld_major_version" -eq 2 -a \
6284 "$gcc_cv_gld_minor_version" -ge 21 -o \
6285 "$gcc_cv_gld_major_version" -gt 2 \
6286 && test $in_tree_ld_is_elf = yes; then
6287 gcc_cv_ld_sol2_emulation=yes
6289 elif test x$gcc_cv_ld != x; then
6290 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
6291 grep _sol2 > /dev/null; then
6292 gcc_cv_ld_sol2_emulation=yes
6295 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
6296 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
6297 [Define if your linker supports the *_sol2 emulations.])
6300 AC_CACHE_CHECK(linker --sysroot support,
6302 [gcc_cv_ld_sysroot=no
6303 if test $in_tree_ld = yes ; then
6304 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
6305 gcc_cv_ld_sysroot=yes
6307 elif test x$gcc_cv_ld != x; then
6308 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
6309 gcc_cv_ld_sysroot=yes
6312 if test x"$gcc_cv_ld_sysroot" = xyes; then
6313 AC_DEFINE(HAVE_LD_SYSROOT, 1,
6314 [Define if your linker supports --sysroot.])
6319 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
6320 AC_CACHE_CHECK([system-provided CRTs on Solaris],
6321 gcc_cv_solaris_crts,
6322 [gcc_cv_solaris_crts=no
6323 if test x$host != x$target; then
6324 if test "x$with_sysroot" = xyes; then
6325 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
6327 target_sysroot="${with_sysroot}"
6330 target_libdir="$target_sysroot/usr/lib"
6331 # At the time they were added, gcrt1.o became a symlink for backwards
6332 # compatibility on x86, while crt1.o was added on sparc, so check for that.
6334 i?86-*-solaris2* | x86_64-*-solaris2*)
6335 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
6338 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
6343 if test x$gcc_cv_solaris_crts = xyes; then
6344 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
6345 [Define if the system-provided CRTs are present on Solaris.])
6348 AC_ARG_ENABLE(libssp,
6349 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
6350 [case "${enableval}" in
6354 AC_MSG_ERROR([unknown libssp setting $enableval])
6358 # Test for stack protector support in target C library.
6359 AC_CACHE_CHECK(__stack_chk_fail in target C library,
6360 gcc_cv_libc_provides_ssp,
6361 [gcc_cv_libc_provides_ssp=no
6362 if test "x$enable_libssp" = "xno"; then
6363 gcc_cv_libc_provides_ssp=yes
6364 elif test "x$enable_libssp" = "xyes"; then
6365 gcc_cv_libc_provides_ssp=no
6369 # All versions of musl provide stack protector
6370 gcc_cv_libc_provides_ssp=yes;;
6371 *-*-linux* | *-*-kfreebsd*-gnu)
6372 # glibc 2.4 and later provides __stack_chk_fail and
6373 # either __stack_chk_guard, or TLS access to stack guard canary.
6374 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
6375 [if test -f $target_header_dir/features.h \
6376 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
6377 $target_header_dir/features.h > /dev/null; then
6378 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
6379 $target_header_dir/features.h > /dev/null && \
6380 test -f $target_header_dir/bits/uClibc_config.h && \
6381 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
6382 $target_header_dir/bits/uClibc_config.h > /dev/null; then
6383 gcc_cv_libc_provides_ssp=yes
6385 # all versions of Bionic support stack protector
6386 elif test -f $target_header_dir/sys/cdefs.h \
6387 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
6388 $target_header_dir/sys/cdefs.h > /dev/null; then
6389 gcc_cv_libc_provides_ssp=yes
6393 # Avoid complicated tests (see
6394 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
6395 # simply assert that glibc does provide this, which is true for all
6396 # realistically usable GNU/Hurd configurations.
6397 # All supported versions of musl provide it as well
6398 gcc_cv_libc_provides_ssp=yes;;
6399 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
6400 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
6401 [echo "no __stack_chk_fail on this target"])
6403 *) gcc_cv_libc_provides_ssp=no ;;
6407 if test x$gcc_cv_libc_provides_ssp = xyes; then
6408 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
6409 [Define if your target C library provides stack protector support])
6412 # Check whether --enable-default-ssp was given.
6413 AC_ARG_ENABLE(default-ssp,
6414 [AS_HELP_STRING([--enable-default-ssp],
6415 [enable Stack Smashing Protection as default])],[
6416 if test x$gcc_cv_libc_provides_ssp = xyes; then
6418 ia64*-*-*) enable_default_ssp=no ;;
6419 *) enable_default_ssp=$enableval ;;
6422 enable_default_ssp=no
6424 enable_default_ssp=no)
6425 if test x$enable_default_ssp = xyes ; then
6426 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
6427 [Define if your target supports default stack protector and it is enabled.])
6429 AC_SUBST([enable_default_ssp])
6431 # Test for <sys/sdt.h> on the target.
6432 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6433 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6435 if test -f $target_header_dir/sys/sdt.h; then
6437 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6438 [Define if your target C library provides sys/sdt.h])
6440 AC_MSG_RESULT($have_sys_sdt_h)
6442 # Check if TFmode long double should be used by default or not.
6443 # Some glibc targets used DFmode long double, but with glibc 2.4
6444 # and later they can use TFmode.
6446 powerpc*-*-linux* | \
6450 AC_ARG_WITH(long-double-128,
6451 [AS_HELP_STRING([--with-long-double-128],
6452 [use 128-bit long double by default])],
6453 gcc_cv_target_ldbl128="$with_long_double_128", [
6455 s390*-*-linux-musl*)
6456 gcc_cv_target_ldbl128=yes
6458 powerpc*-*-linux-musl*)
6459 gcc_cv_target_ldbl128=no
6462 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6463 [gcc_cv_target_ldbl128=no
6464 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6465 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6466 && gcc_cv_target_ldbl128=yes
6474 if test x$gcc_cv_target_ldbl128 = xyes; then
6475 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6476 [Define if TFmode long double should be the default])
6479 # Check if TFmode long double target should use the IBM extended double or IEEE
6480 # 128-bit floating point formats if long doubles are 128-bits long. The long
6481 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6482 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6484 AC_ARG_WITH([long-double-format],
6485 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6486 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6487 case "$target:$with_long_double_format" in
6488 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6491 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6492 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6494 power7 | power8 | power9 | power1*)
6498 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6499 supported if the default cpu is power7 or newer])
6500 with_long_double_format=""
6504 powerpc64*-*-linux*:*)
6505 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6506 with_long_double_format=""
6509 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6510 on 64-bit PowerPC VSX Linux systems])
6511 with_long_double_format=""
6516 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6517 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6518 gcc_cv_libc_provides_hwcap_in_tcb=no
6521 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6524 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6525 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6526 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6529 # Check if the target LIBC handles PT_GNU_STACK.
6530 gcc_cv_libc_gnustack=unknown
6533 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
6536 if test x$gcc_cv_libc_gnustack = xyes; then
6537 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
6538 [Define if your target C Library properly handles PT_GNU_STACK])
6541 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6542 gcc_cv_target_dl_iterate_phdr=unknown
6545 # <link.h> needs both a dl_iterate_phdr declaration and support for
6546 # compilation with largefile support.
6547 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6548 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6549 gcc_cv_target_dl_iterate_phdr=yes
6551 gcc_cv_target_dl_iterate_phdr=no
6554 *-*-dragonfly* | *-*-freebsd*)
6555 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6556 gcc_cv_target_dl_iterate_phdr=yes
6558 gcc_cv_target_dl_iterate_phdr=no
6562 gcc_cv_target_dl_iterate_phdr=yes
6565 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6566 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6567 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6568 [Define if your target C library provides the `dl_iterate_phdr' function.])
6570 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6572 # We no longer support different GC mechanisms. Emit an error if
6573 # the user configures with --with-gc.
6575 [AS_HELP_STRING([--with-gc={page,zone}],
6576 [this option is not supported anymore. It used to choose
6577 the garbage collection mechanism to use with the compiler])],
6578 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6581 # Libraries to use on the host. This will normally be set by the top
6582 # level Makefile. Here we simply capture the value for our Makefile.
6583 if test -z "${HOST_LIBS+set}"; then
6588 # Use the system's zlib library.
6591 dnl Very limited version of automake's enable-maintainer-mode
6593 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6594 dnl maintainer-mode is disabled by default
6595 AC_ARG_ENABLE(maintainer-mode,
6596 [AS_HELP_STRING([--enable-maintainer-mode],
6597 [enable make rules and dependencies not useful
6598 (and sometimes confusing) to the casual installer])],
6599 maintainer_mode=$enableval,
6602 AC_MSG_RESULT($maintainer_mode)
6604 if test "$maintainer_mode" = "yes"; then
6611 dnl Whether to prevent multiple front-ends from linking at the same time
6613 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6614 AC_ARG_ENABLE(link-mutex,
6615 [AS_HELP_STRING([--enable-link-mutex],
6616 [avoid linking multiple front-ends at once to avoid thrashing
6617 on the build machine])],
6618 do_link_mutex=$enableval,
6620 AC_MSG_RESULT($do_link_mutex)
6622 if test "$do_link_mutex" = "yes"; then
6627 AC_SUBST(DO_LINK_MUTEX)
6633 # Make empty files to contain the specs and options for each language.
6634 # Then add #include lines to for a compiler that has specs and/or options.
6640 # These (without "all_") are set in each config-lang.in.
6641 # `language' must be a single word so is spelled singularly.
6644 all_outputs='Makefile'
6645 # List of language configure and makefile fragments.
6646 all_lang_configurefrags=
6648 # Additional files for gengtype
6649 all_gtfiles="$target_gtfiles"
6651 # These are the languages that are set in --enable-languages,
6652 # and are available in the GCC tree.
6653 all_selected_languages=
6655 # Add the language fragments.
6656 # Languages are added via two mechanisms. Some information must be
6657 # recorded in makefile variables, these are defined in config-lang.in.
6658 # We accumulate them and plug them into the main Makefile.
6659 # The other mechanism is a set of hooks for each of the main targets
6660 # like `clean', `install', etc.
6662 language_hooks="Make-hooks"
6664 for lang in ${srcdir}/*/config-lang.in
6667 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6669 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6670 if test "x$lang_alias" = x
6672 echo "$lang doesn't set \$language." 1>&2
6675 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6676 subdirs="$subdirs $subdir"
6678 # $gcc_subdir is where the gcc integration files are to be found
6679 # for a language, both for internal compiler purposes (compiler
6680 # sources implementing front-end to GCC tree converters), and for
6681 # build infrastructure purposes (Make-lang.in, etc.)
6683 # This will be <subdir> (relative to $srcdir) if a line like
6684 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6685 # is found in <langdir>/config-lang.in, and will remain <langdir>
6688 # Except for the language alias (fetched above), the regular
6689 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6690 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6691 # only this and the language alias.
6693 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6694 if [ "$gcc_subdir" = "" ]; then
6695 gcc_subdir="$subdir"
6698 case ",$enable_languages," in
6700 all_selected_languages="$all_selected_languages $lang_alias"
6701 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6702 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6714 . ${srcdir}/$gcc_subdir/config-lang.in
6715 if test "x$language" = x
6717 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6722 case ",$enable_languages," in
6725 for i in $subdir_requires; do
6726 test -f "${srcdir}/$i/config-lang.in" && continue
6734 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in"
6735 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6736 if test -f $srcdir/$gcc_subdir/lang.opt; then
6737 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6738 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6740 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6741 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6743 all_languages="$all_languages $language"
6744 all_compilers="$all_compilers $compilers"
6745 all_outputs="$all_outputs $outputs"
6746 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6747 case ",$enable_languages," in
6749 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6751 AC_SUBST(enable_lto)
6758 for language in $all_selected_languages
6760 check_languages="$check_languages check-$language"
6764 for language in $all_selected_languages
6766 selftest_languages="$selftest_languages selftest-$language"
6769 # We link each language in with a set of hooks, reached indirectly via
6770 # lang.${target}. Only do so for selected languages.
6774 target_list="all.cross start.encap rest.encap tags \
6775 install-common install-man install-info install-pdf install-html dvi \
6776 pdf html uninstall info man srcextra srcman srcinfo \
6777 mostlyclean clean distclean maintainer-clean install-plugin"
6779 for t in $target_list
6782 for lang in $all_selected_languages
6786 echo "lang.$t: $x" >> Make-hooks
6790 # Option include files
6793 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6794 option_includes="option-includes.mk"
6795 AC_SUBST_FILE(option_includes)
6803 echo "dir ." > .gdbinit
6804 echo "dir ${srcdir}" >> .gdbinit
6805 if test x$gdb_needs_out_file_path = xyes
6807 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6809 if test "x$subdirs" != x; then
6812 echo "dir ${srcdir}/$s" >> .gdbinit
6815 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6816 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6818 # Put a breakpoint on __asan_report_error to help with debugging buffer
6821 *-fsanitize=address*)
6822 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6826 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6827 AC_SUBST(gcc_tooldir)
6830 # Find a directory in which to install a shared libgcc.
6832 AC_ARG_ENABLE(version-specific-runtime-libs,
6833 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6834 [specify that runtime libraries should be
6835 installed in a compiler-specific directory])])
6837 # Substitute configuration variables
6840 AC_SUBST(all_compilers)
6841 AC_SUBST(all_gtfiles)
6842 AC_SUBST(all_lang_configurefrags)
6843 AC_SUBST(all_lang_makefrags)
6844 AC_SUBST(all_languages)
6845 AC_SUBST(all_selected_languages)
6846 AC_SUBST(build_exeext)
6847 AC_SUBST(build_install_headers_dir)
6848 AC_SUBST(build_xm_file_list)
6849 AC_SUBST(build_xm_include_list)
6850 AC_SUBST(build_xm_defines)
6851 AC_SUBST(build_file_translate)
6852 AC_SUBST(check_languages)
6853 AC_SUBST(selftest_languages)
6854 AC_SUBST(cpp_install_dir)
6855 AC_SUBST(xmake_file)
6856 AC_SUBST(tmake_file)
6857 AC_SUBST(TM_ENDIAN_CONFIG)
6858 AC_SUBST(TM_MULTILIB_CONFIG)
6859 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6860 AC_SUBST(extra_gcc_objs)
6861 AC_SUBST(user_headers_inc_next_pre)
6862 AC_SUBST(user_headers_inc_next_post)
6863 AC_SUBST(extra_headers_list)
6864 AC_SUBST(extra_objs)
6865 AC_SUBST(extra_programs)
6866 AC_SUBST(float_h_file)
6867 AC_SUBST(gcc_config_arguments)
6868 AC_SUBST(gcc_gxx_include_dir)
6869 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6870 AC_SUBST(host_exeext)
6871 AC_SUBST(host_xm_file_list)
6872 AC_SUBST(host_xm_include_list)
6873 AC_SUBST(host_xm_defines)
6874 AC_SUBST(out_host_hook_obj)
6876 AC_SUBST(lang_opt_files)
6877 AC_SUBST(lang_specs_files)
6878 AC_SUBST(lang_tree_files)
6879 AC_SUBST(local_prefix)
6881 AC_SUBST(objc_boehm_gc)
6883 AC_SUBST(out_object_file)
6884 AC_SUBST(common_out_file)
6885 AC_SUBST(common_out_object_file)
6886 AC_SUBST(tm_file_list)
6887 AC_SUBST(tm_include_list)
6888 AC_SUBST(tm_defines)
6889 AC_SUBST(tm_p_file_list)
6890 AC_SUBST(tm_p_include_list)
6891 AC_SUBST(tm_d_file_list)
6892 AC_SUBST(tm_d_include_list)
6893 AC_SUBST(xm_file_list)
6894 AC_SUBST(xm_include_list)
6895 AC_SUBST(xm_defines)
6896 AC_SUBST(use_gcc_stdint)
6897 AC_SUBST(c_target_objs)
6898 AC_SUBST(cxx_target_objs)
6899 AC_SUBST(fortran_target_objs)
6900 AC_SUBST(d_target_objs)
6901 AC_SUBST(target_cpu_default)
6903 AC_SUBST_FILE(language_hooks)
6906 if test x${build} = x${host} ; then
6907 if test x${host} = x${target} ; then
6908 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6910 echo "Links are now set up to build a cross-compiler" 1>&2
6911 echo " from ${host} to ${target}." 1>&2
6914 if test x${host} = x${target} ; then
6915 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6916 echo " for ${target}." 1>&2
6918 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6919 echo " from ${host} to ${target}." 1>&2
6923 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6924 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6926 AC_ARG_VAR(ISLLIBS,[How to link isl])
6927 AC_ARG_VAR(ISLINC,[How to find isl include files])
6928 if test "x${ISLLIBS}" != "x" ; then
6929 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6933 AC_SUBST(pluginlibs)
6934 AC_SUBST(enable_plugin)
6935 if test x"$enable_plugin" = x"yes"; then
6936 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6940 # Enable --enable-host-shared
6941 AC_ARG_ENABLE(host-shared,
6942 [AS_HELP_STRING([--enable-host-shared],
6943 [build host code as shared libraries])],
6944 [PICFLAG=-fPIC], [PICFLAG=])
6945 AC_SUBST(enable_host_shared)
6949 AC_ARG_ENABLE(libquadmath-support,
6950 [AS_HELP_STRING([--disable-libquadmath-support],
6951 [disable libquadmath support for Fortran])],
6952 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6953 ENABLE_LIBQUADMATH_SUPPORT=yes)
6954 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6955 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6956 [Define to 1 to enable libquadmath support])
6960 # Specify what hash style to use by default.
6961 AC_ARG_WITH([linker-hash-style],
6962 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6963 [specify the linker hash style])],
6964 [case x"$withval" in
6966 LINKER_HASH_STYLE=sysv
6969 LINKER_HASH_STYLE=gnu
6972 LINKER_HASH_STYLE=both
6975 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6978 [LINKER_HASH_STYLE=''])
6979 if test x"${LINKER_HASH_STYLE}" != x; then
6980 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6981 [The linker hash style])
6984 # Specify what should be the default of -fdiagnostics-color option.
6985 AC_ARG_WITH([diagnostics-color],
6986 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6987 [specify the default of -fdiagnostics-color option
6988 auto-if-env stands for -fdiagnostics-color=auto if
6989 GCC_COLOR environment variable is present and
6990 -fdiagnostics-color=never otherwise])],
6991 [case x"$withval" in
6993 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6996 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6999 DIAGNOSTICS_COLOR_DEFAULT=-1
7002 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
7005 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
7008 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
7009 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
7010 [The default for -fdiagnostics-color option])
7012 # Specify what should be the default of -fdiagnostics-urls option.
7013 AC_ARG_WITH([diagnostics-urls],
7014 [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}],
7015 [specify the default of -fdiagnostics-urls option
7016 auto-if-env stands for -fdiagnostics-urls=auto if
7017 GCC_URLS or TERM_URLS environment variable is present and
7018 -fdiagnostics-urls=never otherwise])],
7019 [case x"$withval" in
7021 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO
7024 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO
7027 DIAGNOSTICS_URLS_DEFAULT=-1
7030 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES
7033 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls])
7036 [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO])
7037 AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT,
7038 [The default for -fdiagnostics-urls option])
7040 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
7041 # of jit/jit-playback.c.
7042 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
7043 echo "gcc_driver_version: ${gcc_driver_version}"
7044 cat > gcc-driver-name.h <<EOF
7045 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
7048 # Check whether --enable-default-pie was given.
7049 AC_ARG_ENABLE(default-pie,
7050 [AS_HELP_STRING([--enable-default-pie],
7051 [enable Position Independent Executable as default])],
7052 enable_default_pie=$enableval,
7053 enable_default_pie=no)
7054 if test x$enable_default_pie = xyes ; then
7055 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
7056 [Define if your target supports default PIE and it is enabled.])
7058 AC_SUBST([enable_default_pie])
7060 # Check if -fno-PIE works.
7061 AC_CACHE_CHECK([for -fno-PIE option],
7063 [saved_CXXFLAGS="$CXXFLAGS"
7064 CXXFLAGS="$CXXFLAGS -fno-PIE"
7065 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7066 [gcc_cv_c_no_fpie=yes],
7067 [gcc_cv_c_no_fpie=no])
7068 CXXFLAGS="$saved_CXXFLAGS"])
7069 if test "$gcc_cv_c_no_fpie" = "yes"; then
7070 NO_PIE_CFLAGS="-fno-PIE"
7072 AC_SUBST([NO_PIE_CFLAGS])
7074 # Check if -no-pie works.
7075 AC_CACHE_CHECK([for -no-pie option],
7077 [saved_LDFLAGS="$LDFLAGS"
7078 LDFLAGS="$LDFLAGS -no-pie"
7079 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
7080 [gcc_cv_no_pie=yes],
7082 LDFLAGS="$saved_LDFLAGS"])
7083 if test "$gcc_cv_no_pie" = "yes"; then
7084 NO_PIE_FLAG="-no-pie"
7086 AC_SUBST([NO_PIE_FLAG])
7088 # Enable Intel CET on Intel CET enabled host if jit is enabled.
7089 GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
7090 case x$enable_languages in
7097 AC_SUBST(CET_HOST_FLAGS)
7099 # Check linker supports '-z bndplt'
7100 ld_bndplt_support=no
7101 AC_MSG_CHECKING(linker -z bndplt option)
7102 if test x"$ld_is_gold" = xno; then
7103 if test $in_tree_ld = yes ; then
7104 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7105 ld_bndplt_support=yes
7107 elif test x$gcc_cv_ld != x; then
7108 # Check if linker supports -a bndplt option
7109 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
7110 ld_bndplt_support=yes
7114 if test x"$ld_bndplt_support" = xyes; then
7115 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
7116 [Define if your linker supports -z bndplt])
7118 AC_MSG_RESULT($ld_bndplt_support)
7120 # Check linker supports '--push-state'/'--pop-state'
7121 ld_pushpopstate_support=no
7122 AC_MSG_CHECKING(linker --push-state/--pop-state options)
7123 if test x"$ld_is_gold" = xno; then
7124 if test $in_tree_ld = yes ; then
7125 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
7126 ld_pushpopstate_support=yes
7128 elif test x$gcc_cv_ld != x; then
7129 # Check if linker supports --push-state/--pop-state options
7130 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
7131 ld_pushpopstate_support=yes
7135 if test x"$ld_pushpopstate_support" = xyes; then
7136 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
7137 [Define if your linker supports --push-state/--pop-state])
7139 AC_MSG_RESULT($ld_pushpopstate_support)
7141 # Configure the subdirectories
7142 # AC_CONFIG_SUBDIRS($subdirs)
7144 # Create the Makefile
7145 # and configure language subdirectories
7146 AC_CONFIG_FILES($all_outputs)
7148 AC_CONFIG_COMMANDS([default],
7150 case ${CONFIG_HEADERS} in
7151 *auto-host.h:config.in*)
7154 # Make sure all the subdirs exist.
7155 for d in $subdirs doc build common c-family
7157 test -d $d || mkdir $d
7160 [subdirs='$subdirs'])