2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2018 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 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
209 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
210 # relative to the sysroot.
211 gcc_gxx_include_dir_add_sysroot=0
213 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
214 if test x${gcc_gxx_include_dir} = x; then
215 if test x${enable_version_specific_runtime_libs} = xyes; then
216 gcc_gxx_include_dir='${libsubdir}/include/c++'
218 libstdcxx_incdir='include/c++/$(version)'
219 if test x$host != x$target; then
220 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
222 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
224 elif test "${with_sysroot+set}" = set; then
225 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
226 if test "${gcc_gxx_without_sysroot}"; then
227 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 AC_ARG_WITH(cpp_install_dir,
233 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
234 [install the user visible C preprocessor in DIR
235 (relative to PREFIX) as well as PREFIX/bin])],
236 [if test x$withval = xyes; then
237 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
238 elif test x$withval != xno; then
239 cpp_install_dir=$withval
242 # We would like to our source tree to be readonly. However when releases or
243 # pre-releases are generated, the flex/bison generated files as well as the
244 # various formats of manuals need to be included along with the rest of the
245 # sources. Therefore we have --enable-generated-files-in-srcdir to do
248 AC_MSG_CHECKING([whether to place generated files in the source directory])
249 dnl generated-files-in-srcdir is disabled by default
250 AC_ARG_ENABLE(generated-files-in-srcdir,
251 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
252 [put copies of generated files in source dir
253 intended for creating source tarballs for users
254 without texinfo bison or flex])],
255 generated_files_in_srcdir=$enableval,
256 generated_files_in_srcdir=no)
258 AC_MSG_RESULT($generated_files_in_srcdir)
260 if test "$generated_files_in_srcdir" = "yes"; then
267 # -------------------
268 # Find default linker
269 # -------------------
273 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
274 gnu_ld_flag="$with_gnu_ld",
278 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
282 # With pre-defined ld
284 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
285 DEFAULT_LINKER="$with_ld")
286 if test x"${DEFAULT_LINKER+set}" = x"set"; then
287 if test ! -x "$DEFAULT_LINKER"; then
288 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
289 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
291 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
294 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
295 [Define to enable the use of a default linker.])
298 AC_MSG_CHECKING([whether a default linker was specified])
299 if test x"${DEFAULT_LINKER+set}" = x"set"; then
300 if test x"$gnu_ld_flag" = x"no"; then
301 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
303 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
309 # With demangler in GNU ld
310 AC_ARG_WITH(demangler-in-ld,
311 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
312 demangler_in_ld="$with_demangler_in_ld",
315 # ----------------------
316 # Find default assembler
317 # ----------------------
321 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
322 gas_flag="$with_gnu_as",
326 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
327 DEFAULT_ASSEMBLER="$with_as")
328 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
329 if test ! -x "$DEFAULT_ASSEMBLER"; then
330 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
331 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
334 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
335 [Define to enable the use of a default assembler.])
338 AC_MSG_CHECKING([whether a default assembler was specified])
339 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
340 if test x"$gas_flag" = x"no"; then
341 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
343 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
353 # If a non-executable a.out is present (e.g. created by GNU as above even if
354 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
355 # file, even when creating an executable, so an execution test fails.
356 # Remove possible default executable files to avoid this.
358 # FIXME: This really belongs into AC_PROG_CC and can be removed once
359 # Autoconf includes it.
360 rm -f a.out a.exe b.out
362 # Find the native compiler
365 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
367 # Do configure tests with the C++ compiler, since that's what we build with.
370 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
371 # optimizations to be activated explicitly by the toplevel.
374 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
375 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
380 # Determine PICFLAG for target gnatlib.
381 GCC_PICFLAG_FOR_TARGET
382 AC_SUBST(PICFLAG_FOR_TARGET)
384 # -------------------------
385 # Check C compiler features
386 # -------------------------
388 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$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 $CXX is affected by placement new aliasing bug])
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$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 $wf_opt])), [loose_warn])
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # default stack clash protection guard size as power of twos in bytes.
815 # Please keep these in sync with params.def.
819 # Keep the default value when the option is not used to 0, this allows us to
820 # distinguish between the cases where the user specifially set a value via
821 # configure and when the normal default value is used.
822 AC_ARG_WITH(stack-clash-protection-guard-size,
823 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
824 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
825 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
826 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
827 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
828 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
829 AC_MSG_ERROR(m4_normalize([
830 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
831 Must be between $stk_clash_min and $stk_clash_max.]))
834 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
835 [Define to larger than zero set the default stack clash protector size.])
837 # Enable __cxa_atexit for C++.
838 AC_ARG_ENABLE(__cxa_atexit,
839 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
842 # Enable C extension for decimal float if target supports it.
843 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
845 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
846 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
847 [Define to 1 to enable decimal float extension to C.])
849 # Use default_decimal_float for dependency.
850 enable_decimal_float=$default_decimal_float
852 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
853 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
854 [Define to 1 to specify that we are using the BID decimal floating
855 point format instead of DPD])
857 # Enable C extension for fixed-point arithmetic.
858 AC_ARG_ENABLE(fixed-point,
859 [AS_HELP_STRING([--enable-fixed-point],
860 [enable fixed-point arithmetic extension to C])],
865 enable_fixed_point=yes
869 enable_fixed_point=yes
872 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
873 enable_fixed_point=no
877 AC_SUBST(enable_fixed_point)
879 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
880 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
881 [Define to 1 to enable fixed-point arithmetic extension to C.])
884 # Pass with no value to take the default
885 # Pass with a value to specify a thread package
886 AC_ARG_ENABLE(threads,
887 [AS_HELP_STRING([[--enable-threads[=LIB]]],
888 [enable thread usage for target GCC,
889 using LIB thread package])],,
893 [AS_HELP_STRING([--enable-tls],
894 [enable or disable generation of tls code
895 overriding the assembler check for tls support])],
899 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
900 Valid choices are 'yes' and 'no'.]) ;;
904 AC_ARG_ENABLE(vtable-verify,
905 [AS_HELP_STRING([--enable-vtable-verify],
906 [enable vtable verification feature])],,
907 [enable_vtable_verify=no])
908 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
909 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
910 [Define 0/1 if vtable verification feature is enabled.])
912 AC_ARG_ENABLE(objc-gc,
913 [AS_HELP_STRING([--enable-objc-gc],
914 [enable the use of Boehm's garbage collector with
915 the GNU Objective-C runtime])],
916 if test x$enable_objc_gc = xno; then
924 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
925 dwarf2="$with_dwarf2",
928 AC_ARG_ENABLE(shared,
929 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
931 case $enable_shared in
935 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
936 for pkg in $enableval; do
937 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
944 ], [enable_shared=yes])
945 AC_SUBST(enable_shared)
948 [ --disable-gcov don't provide libgcov and related host tools],
949 [], [enable_gcov=yes])
950 AC_SUBST(enable_gcov)
953 [AS_HELP_STRING([--with-specs=SPECS],
954 [add SPECS to driver command-line processing])],
955 [CONFIGURE_SPECS=$withval],
958 AC_SUBST(CONFIGURE_SPECS)
960 ACX_PKGVERSION([GCC])
961 ACX_BUGURL([https://gcc.gnu.org/bugs/])
963 # Sanity check enable_languages in case someone does not run the toplevel
964 # configure # script.
965 AC_ARG_ENABLE(languages,
966 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
967 [case ,${enable_languages}, in
969 # go safe -- we cannot be much sure without the toplevel
971 # analysis of which target libs are present and usable
975 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
980 enable_languages=c,${enable_languages}
983 [enable_languages=c])
985 if test x"$enable_as_accelerator_for" != x; then
986 AC_DEFINE(ACCEL_COMPILER, 1,
987 [Define if this compiler should be built as the offload target compiler.])
988 enable_as_accelerator=yes
991 # In this case we expect offload compiler to be built as native, so we
992 # need to rename the driver to avoid clashes with host's drivers.
993 program_transform_name="s&^&${target}-&" ;;
995 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
996 program_transform_name=`echo $program_transform_name | sed $sedscript`
997 accel_dir_suffix=/accel/${target_noncanonical}
998 real_target_noncanonical=${enable_as_accelerator_for}
1000 AC_SUBST(enable_as_accelerator)
1001 AC_SUBST(real_target_noncanonical)
1002 AC_SUBST(accel_dir_suffix)
1004 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1005 tgt=`echo $tgt | sed 's/=.*//'`
1007 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1013 if test x"$offload_targets" = x; then
1014 offload_targets=$tgt
1016 offload_targets="$offload_targets,$tgt"
1019 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1020 [Define to offload targets, separated by commas.])
1021 if test x"$enable_offloading" != x; then
1022 AC_DEFINE(ENABLE_OFFLOADING, 1,
1023 [Define this to enable support for offloading.])
1025 AC_DEFINE(ENABLE_OFFLOADING, 0,
1026 [Define this to enable support for offloading.])
1029 if test x"$enable_hsa" = x1 ; then
1030 AC_DEFINE(ENABLE_HSA, 1,
1031 [Define this to enable support for generating HSAIL.])
1034 AC_ARG_WITH(multilib-list,
1035 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1037 with_multilib_list=default)
1039 # -------------------------
1040 # Checks for other programs
1041 # -------------------------
1045 # Find some useful tools
1047 # We need awk to create options.c and options.h.
1048 # Bail out if it's missing.
1050 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1057 AC_SUBST(ranlib_flags)
1061 # See if cmp has --ignore-initial.
1062 gcc_AC_PROG_CMP_IGNORE_INITIAL
1064 # See if we have the mktemp command.
1065 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1067 # See if makeinfo has been installed and is modern enough
1068 # that we can use it.
1069 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1070 [GNU texinfo.* \([0-9][0-9.]*\)],
1071 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1072 if test $gcc_cv_prog_makeinfo_modern = no; then
1074 *** Makeinfo is missing or too old.
1075 *** Info documentation will not be built.])
1080 AC_SUBST(BUILD_INFO)
1082 # Is pod2man recent enough to regenerate manpages?
1083 AC_MSG_CHECKING([for recent Pod::Man])
1084 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1086 GENERATED_MANPAGES=generated-manpages
1091 AC_SUBST(GENERATED_MANPAGES)
1093 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1096 dnl Don't use AC_PROG_LEX; we insist on flex.
1097 dnl LEXLIB is not useful in gcc.
1098 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1101 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1103 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1104 # check for build == host before using them.
1107 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1108 && test -d ../binutils ; then
1109 NM='${objdir}/../binutils/nm-new'
1111 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1115 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1116 && test -d ../binutils ; then
1117 AR='${objdir}/../binutils/ar'
1119 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1122 # The jit documentation looks better if built with sphinx, but can be
1123 # built with texinfo if sphinx is not available.
1124 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1125 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1127 # --------------------
1128 # Checks for C headers
1129 # --------------------
1131 # Need to reject headers which give warnings, so that the -Werror bootstrap
1132 # works later. *sigh* This needs to come before all header checks.
1139 AC_HEADER_TIOCGWINSZ
1140 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1141 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1142 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1143 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1145 # Check for thread headers.
1146 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1147 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1149 # These tests can't be done till we know if we have limits.h.
1153 # ----------------------
1154 # Checks for C++ headers
1155 # ----------------------
1157 dnl Autoconf will give an error in the configure script if there is no
1158 dnl C++ preprocessor. Hack to prevent that.
1159 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1161 m4_popdef([AC_MSG_ERROR])[]dnl
1163 AC_CHECK_HEADERS(unordered_map)
1164 AC_CHECK_HEADERS(tr1/unordered_map)
1165 AC_CHECK_HEADERS(ext/hash_map)
1168 # Dependency checking.
1172 AC_CONFIG_COMMANDS([gccdepdir],[
1173 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1174 for lang in $subdirs c-family common
1176 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1177 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1179 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1186 # These libraries may be used by collect2.
1187 # We may need a special search path to get them linked.
1188 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1190 for libs in '' -lld -lmld \
1191 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1192 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1195 AC_TRY_LINK_FUNC(ldopen,
1196 [gcc_cv_collect2_libs="$libs"; break])
1199 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1200 case $gcc_cv_collect2_libs in
1202 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1204 AC_SUBST(COLLECT2_LIBS)
1206 # When building Ada code on Alpha, we need exc_resume which is usually in
1207 # -lexc. So test for it.
1210 AC_SEARCH_LIBS(exc_resume, exc)
1213 AC_SUBST(GNAT_LIBEXC)
1215 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1218 AC_SEARCH_LIBS(kstat_open, kstat)
1219 EXTRA_GCC_LIBS="$LIBS"
1221 AC_SUBST(EXTRA_GCC_LIBS)
1223 # Some systems put ldexp and frexp in libm instead of libc; assume
1224 # they're both in the same place. jcf-dump needs them.
1227 AC_SEARCH_LIBS(ldexp, m)
1232 # Use <inttypes.h> only if it exists,
1233 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1235 AC_MSG_CHECKING(for inttypes.h)
1236 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1237 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1238 [[#define __STDC_FORMAT_MACROS
1239 #include <sys/types.h>
1240 #include <inttypes.h>]],
1245 [gcc_cv_header_inttypes_h=yes],
1246 [gcc_cv_header_inttypes_h=no])])
1247 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1248 if test $gcc_cv_header_inttypes_h = yes; then
1249 AC_DEFINE(HAVE_INTTYPES_H, 1,
1250 [Define if you have a working <inttypes.h> header file.])
1253 dnl Disabled until we have a complete test for buggy enum bitfields.
1254 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1256 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1257 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1258 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1259 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1260 putchar_unlocked putc_unlocked)
1261 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1262 popen sysconf strsignal getrusage nl_langinfo \
1263 gettimeofday mbstowcs wcswidth mmap setlocale \
1264 gcc_UNLOCKED_FUNCS madvise)
1266 if test x$ac_cv_func_mbstowcs = xyes; then
1267 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1268 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1274 [gcc_cv_func_mbstowcs_works=yes],
1275 [gcc_cv_func_mbstowcs_works=no],
1276 [gcc_cv_func_mbstowcs_works=yes])])
1277 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1278 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1279 [Define this macro if mbstowcs does not crash when its
1280 first argument is NULL.])
1284 AC_CHECK_TYPE(ssize_t, int)
1285 AC_CHECK_TYPE(caddr_t, char *)
1287 GCC_AC_FUNC_MMAP_BLACKLIST
1291 # Under VMS, vfork works very differently than on Unix. The standard test
1292 # won't work, and it isn't easily adaptable. It makes more sense to
1294 ac_cv_func_vfork_works=yes
1301 # Until we have in-tree GNU iconv:
1303 if test -f "$LTLIBICONV"; then
1304 LIBICONV_DEP=$LTLIBICONV
1306 AC_SUBST(LIBICONV_DEP)
1312 # We will need to find libiberty.h and ansidecl.h
1313 saved_CFLAGS="$CFLAGS"
1314 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1315 saved_CXXFLAGS="$CXXFLAGS"
1316 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1318 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1319 # normal autoconf function for these. But force definition of
1320 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1321 # basename handling in libiberty.h.
1322 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1323 #undef HAVE_DECL_BASENAME
1324 #define HAVE_DECL_BASENAME 1
1325 #include "ansidecl.h"
1326 #include "system.h"])
1328 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1329 madvise stpcpy strnlen strsignal strverscmp \
1330 strtol strtoul strtoll strtoull setenv unsetenv \
1331 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1332 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1333 #include "ansidecl.h"
1334 #include "system.h"])
1336 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1337 #include "ansidecl.h"
1339 #ifdef HAVE_SYS_RESOURCE_H
1340 #include <sys/resource.h>
1344 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1345 #include "ansidecl.h"
1347 #ifdef HAVE_SYS_RESOURCE_H
1348 #include <sys/resource.h>
1350 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1351 [Define to `long' if <sys/resource.h> doesn't define.])])
1353 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1354 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1355 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1356 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1357 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1358 #include "ansidecl.h"
1367 gcc_AC_CHECK_DECLS(times, , ,[
1368 #include "ansidecl.h"
1370 #ifdef HAVE_SYS_TIMES_H
1371 #include <sys/times.h>
1375 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1376 #include "ansidecl.h"
1381 # More time-related stuff.
1382 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1383 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1384 #include "ansidecl.h"
1386 #ifdef HAVE_SYS_TIMES_H
1387 #include <sys/times.h>
1389 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1390 if test $ac_cv_struct_tms = yes; then
1391 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1392 [Define if <sys/times.h> defines struct tms.])
1395 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1396 # revisit after autoconf 2.50.
1397 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1398 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1399 #include "ansidecl.h"
1401 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1402 if test $gcc_cv_type_clock_t = yes; then
1403 AC_DEFINE(HAVE_CLOCK_T, 1,
1404 [Define if <time.h> defines clock_t.])
1407 # Check if F_SETLKW is supported by fcntl.
1408 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1409 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1410 #include <fcntl.h>]], [[
1416 return fcntl (1, F_SETLKW, &fl);]])],
1417 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1418 if test $ac_cv_f_setlkw = yes; then
1419 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1420 [Define if F_SETLKW supported by fcntl.])
1423 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1424 CFLAGS="$saved_CFLAGS"
1425 CXXFLAGS="$saved_CXXFLAGS"
1427 # mkdir takes a single argument on some systems.
1428 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1436 # With Setjmp/Longjmp based exception handling.
1437 AC_ARG_ENABLE(sjlj-exceptions,
1438 [AS_HELP_STRING([--enable-sjlj-exceptions],
1439 [arrange to use setjmp/longjmp exception handling])],
1442 if test $enableval != yes; then
1443 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1448 force_sjlj_exceptions=yes],
1451 force_sjlj_exceptions=yes
1455 force_sjlj_exceptions=yes
1459 force_sjlj_exceptions=no
1462 if test $force_sjlj_exceptions = yes; then
1463 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1464 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1465 [Define 0/1 to force the choice for exception handling model.])
1468 # --------------------------------------------------------
1469 # Build, host, and target specific configuration fragments
1470 # --------------------------------------------------------
1472 # Collect build-machine-specific information.
1473 . ${srcdir}/config.build || exit 1
1475 # Collect host-machine-specific information.
1476 . ${srcdir}/config.host || exit 1
1480 # Collect target-machine-specific information.
1481 . ${srcdir}/config.gcc || exit 1
1483 extra_objs="${host_extra_objs} ${extra_objs}"
1484 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1486 # Default the target-machine variables that were not explicitly set.
1487 if test x"$tm_file" = x
1488 then tm_file=$cpu_type/$cpu_type.h; fi
1490 if test x"$extra_headers" = x
1491 then extra_headers=; fi
1493 if test x$md_file = x
1494 then md_file=$cpu_type/$cpu_type.md; fi
1496 if test x$out_file = x
1497 then out_file=$cpu_type/$cpu_type.c; fi
1499 if test x"$tmake_file" = x
1500 then tmake_file=$cpu_type/t-$cpu_type
1503 # Support --enable-initfini-array.
1504 if test x$enable_initfini_array != xno; then
1505 tm_file="${tm_file} initfini-array.h"
1508 if test x"$dwarf2" = xyes
1509 then tm_file="$tm_file tm-dwarf2.h"
1512 # Say what files are being used for the output code and MD file.
1513 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1514 echo "Using \`$srcdir/config/$md_file' as machine description file."
1516 # If any of the xm_file variables contain nonexistent files, warn
1517 # about them and drop them.
1520 for x in $build_xm_file; do
1521 if test -f $srcdir/config/$x
1523 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1529 for x in $host_xm_file; do
1530 if test -f $srcdir/config/$x
1532 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1538 for x in $xm_file; do
1539 if test -f $srcdir/config/$x
1541 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1547 for f in $tm_file; do
1550 if test $count = ax; then
1551 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1553 echo "Using the following target machine macro files:"
1554 for f in $tm_file; do
1555 echo " $srcdir/config/$f"
1559 if test x$use_long_long_for_widest_fast_int = xyes; then
1560 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1561 [Define to 1 if the 'long long' type is wider than 'long' but still
1562 efficiently supported by the host hardware.])
1565 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1566 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1568 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1569 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1572 for f in $host_xm_file; do
1575 if test $count = a; then
1577 elif test $count = ax; then
1578 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1580 echo "Using the following host machine macro files:"
1581 for f in $host_xm_file; do
1582 echo " $srcdir/config/$f"
1585 echo "Using ${out_host_hook_obj} for host machine hooks."
1587 if test "$host_xm_file" != "$build_xm_file"; then
1589 for f in $build_xm_file; do
1592 if test $count = a; then
1594 elif test $count = ax; then
1595 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1597 echo "Using the following build machine macro files:"
1598 for f in $build_xm_file; do
1599 echo " $srcdir/config/$f"
1604 if test -n "$configured_native_system_header_dir"; then
1605 native_system_header_dir=$configured_native_system_header_dir
1607 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1608 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1612 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1613 gcc_cv_mcontext_underscores,
1615 #include <sys/cdefs.h>
1616 #include <sys/signal.h>
1617 #include <ucontext.h>
1618 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1620 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1621 if test $gcc_cv_mcontext_underscores = yes; then
1622 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1623 [mcontext_t fields start with __])
1632 # Check if a valid thread package
1633 case ${enable_threads} in
1636 target_thread_file='single'
1640 target_thread_file='single'
1642 aix | dce | lynx | mipssde | posix | rtems | \
1643 single | tpf | vxworks | win32)
1644 target_thread_file=${enable_threads}
1647 echo "${enable_threads} is an unknown thread package" 1>&2
1652 if test x${thread_file} = x; then
1653 # No thread file set by target-specific clauses in config.gcc,
1654 # so use file chosen by default logic above
1655 thread_file=${target_thread_file}
1663 if test x$enable___cxa_atexit = xyes || \
1664 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1665 if test x$host = x$target; then
1667 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1668 # keyed to flag_use_cxa_atexit
1676 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1677 [echo "__cxa_atexit can't be enabled on this target"])
1681 # We can't check for __cxa_atexit when building a cross, so assume
1685 if test x$use_cxa_atexit = xyes; then
1686 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1687 [Define if you want to use __cxa_atexit, rather than atexit, to
1688 register C++ destructors for local statics and global objects.
1689 This is essential for fully standards-compliant handling of
1690 destructors, but requires __cxa_atexit in libc.])
1694 # Look for a file containing extra machine modes.
1695 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1696 extra_modes_file='$(srcdir)'/config/${extra_modes}
1697 AC_SUBST(extra_modes_file)
1698 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1699 [Define to the name of a file containing a list of extra machine modes
1700 for this architecture.])
1703 # Convert extra_options into a form suitable for Makefile use.
1706 for f in $extra_options; do
1707 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1708 all_opt_files="$all_opt_files $srcdir/config/$f"
1710 AC_SUBST(extra_opt_files)
1712 # auto-host.h is the file containing items generated by autoconf and is
1713 # the first file included by config.h.
1714 # If host=build, it is correct to have bconfig include auto-host.h
1715 # as well. If host!=build, we are in error and need to do more
1716 # work to find out the build config parameters.
1717 if test x$host = x$build
1719 build_auto=auto-host.h
1721 # We create a subdir, then run autoconf in the subdir.
1722 # To prevent recursion we set host and build for the new
1723 # invocation of configure to the build for this invocation
1730 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1731 *) realsrcdir=../${srcdir};;
1733 # Clearing GMPINC is necessary to prevent host headers being
1734 # used by the build compiler. Defining GENERATOR_FILE stops
1735 # system.h from including gmp.h.
1736 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1737 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1738 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1739 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1740 ${realsrcdir}/configure \
1741 --enable-languages=${enable_languages-all} \
1742 --target=$target_alias --host=$build_alias --build=$build_alias
1744 # We just finished tests for the build machine, so rename
1745 # the file auto-build.h in the gcc directory.
1746 mv auto-host.h ../auto-build.h
1749 build_auto=auto-build.h
1751 AC_SUBST(build_subdir)
1753 tm_file="${tm_file} defaults.h"
1754 tm_p_file="${tm_p_file} tm-preds.h"
1755 tm_d_file="${tm_d_file} defaults.h"
1756 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1757 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1758 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1759 # put this back in temporarily.
1760 xm_file="auto-host.h ansidecl.h ${xm_file}"
1767 # Compile in configure arguments.
1768 if test -f configargs.h ; then
1769 # Being re-configured.
1770 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1771 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1772 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1773 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1776 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1779 # Double all backslashes and backslash all quotes to turn
1780 # gcc_config_arguments into a C string.
1781 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1782 $gcc_config_arguments
1784 gcc_config_arguments_str=`cat conftest.out`
1787 cat > configargs.h <<EOF
1788 /* Generated automatically. */
1789 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1790 static const char thread_model[] = "$thread_file";
1792 static const struct {
1793 const char *name, *value;
1794 } configure_default_options[] = $configure_default_options;
1799 gcc_BASEVER=`cat $srcdir/BASE-VER`
1800 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1801 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1802 if test -f $srcdir/REVISION ; then
1803 gcc_REVISION=`cat $srcdir/REVISION`
1807 cat > plugin-version.h <<EOF
1808 #include "configargs.h"
1810 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1811 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1812 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1813 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1815 static char basever[] = "$gcc_BASEVER";
1816 static char datestamp[] = "$gcc_DATESTAMP";
1817 static char devphase[] = "$gcc_DEVPHASE";
1818 static char revision[] = "$gcc_REVISION";
1820 /* FIXME plugins: We should make the version information more precise.
1821 One way to do is to add a checksum. */
1823 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1825 configuration_arguments};
1829 # Determine what GCC version number to use in filesystem paths.
1832 # Internationalization
1833 ZW_GNU_GETTEXT_SISTER_DIR
1835 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1836 # -liconv on the link line twice.
1837 case "$LIBINTL" in *$LIBICONV*)
1841 AC_ARG_ENABLE(secureplt,
1842 [AS_HELP_STRING([--enable-secureplt],
1843 [enable -msecure-plt by default for PowerPC])],
1846 AC_ARG_ENABLE(mingw-wildcard,
1847 [AS_HELP_STRING([--enable-mingw-wildcard],
1848 [Set whether to expand wildcard on command-line.
1849 Default to platform configuration])],
1850 [],[enable_mingw_wildcard=platform])
1851 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1852 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1853 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1854 [Value to set mingw's _dowildcard to.])])
1856 AC_ARG_ENABLE(large-address-aware,
1857 [AS_HELP_STRING([--enable-large-address-aware],
1858 [Link mingw executables with --large-address-aware])])
1859 AS_IF([test x"$enable_large_address_aware" = xyes],
1860 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1861 [Define if we should link mingw executables with --large-address-aware])])
1863 AC_ARG_ENABLE(leading-mingw64-underscores,
1864 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1865 [enable leading underscores on 64 bit mingw targets]),
1867 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1868 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1869 [Define if we should use leading underscore on 64 bit mingw targets])])
1872 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1875 AC_ARG_ENABLE(frame-pointer,
1876 [AS_HELP_STRING([--enable-frame-pointer],
1877 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1880 linux* | darwin[[8912]]*)
1881 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1883 enable_frame_pointer=no
1886 enable_frame_pointer=yes
1891 # Windows32 Registry support for specifying GCC installation paths.
1892 AC_ARG_ENABLE(win32-registry,
1893 [AS_HELP_STRING([--disable-win32-registry],
1894 [disable lookup of installation paths in the
1895 Registry on Windows hosts])
1896 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1897 AS_HELP_STRING([--enable-win32-registry=KEY],
1898 [use KEY instead of GCC version as the last portion
1899 of the registry key])],,)
1902 win32 | pe | cygwin* | mingw32*)
1903 if test "x$enable_win32_registry" != xno; then
1904 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1907 if test "x$enable_win32_registry" != xno; then
1908 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1909 [Define to 1 if installation paths should be looked up in the Windows
1910 Registry. Ignored on non-Windows hosts.])
1912 if test "x$enable_win32_registry" != xyes \
1913 && test "x$enable_win32_registry" != x; then
1914 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1915 [Define to be the last component of the Windows registry key under which
1916 to look for installation paths. The full key used will be
1917 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1918 The default is the GCC version number.])
1924 # Get an absolute path to the GCC top-level source directory
1925 holddir=`${PWDCMD-pwd}`
1927 topdir=`${PWDCMD-pwd}`
1930 # Conditionalize the makefile for this host machine.
1932 for f in ${host_xmake_file}
1934 if test -f ${srcdir}/config/$f
1936 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1940 # Conditionalize the makefile for this target machine.
1942 for f in ${tmake_file}
1944 if test -f ${srcdir}/config/$f
1946 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1949 tmake_file="${tmake_file_}"
1951 out_object_file=`basename $out_file .c`.o
1952 common_out_object_file=`basename $common_out_file .c`.o
1954 tm_file_list="options.h"
1955 tm_include_list="options.h insn-constants.h"
1956 for f in $tm_file; do
1959 f=`echo $f | sed 's/^..//'`
1960 tm_file_list="${tm_file_list} $f"
1961 tm_include_list="${tm_include_list} $f"
1964 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1965 tm_include_list="${tm_include_list} $f"
1968 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1969 tm_include_list="${tm_include_list} config/$f"
1976 for f in $tm_p_file; do
1979 tm_p_file_list="${tm_p_file_list} $f"
1980 tm_p_include_list="${tm_p_include_list} $f"
1983 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1984 tm_p_include_list="${tm_p_include_list} config/$f"
1989 tm_d_include_list="options.h insn-constants.h"
1990 for f in $tm_d_file; do
1993 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
1994 tm_d_include_list="${tm_d_include_list} $f"
1997 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
1998 tm_d_include_list="${tm_d_include_list} config/$f"
2005 for f in $xm_file; do
2008 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2009 xm_include_list="${xm_include_list} $f"
2012 xm_file_list="${xm_file_list} $f"
2013 xm_include_list="${xm_include_list} $f"
2016 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2017 xm_include_list="${xm_include_list} config/$f"
2023 host_xm_include_list=
2024 for f in $host_xm_file; do
2027 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2028 host_xm_include_list="${host_xm_include_list} $f"
2031 host_xm_file_list="${host_xm_file_list} $f"
2032 host_xm_include_list="${host_xm_include_list} $f"
2035 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2036 host_xm_include_list="${host_xm_include_list} config/$f"
2042 for f in $build_xm_file; do
2045 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2046 build_xm_include_list="${build_xm_include_list} $f"
2048 auto-build.h | auto-host.h )
2049 build_xm_file_list="${build_xm_file_list} $f"
2050 build_xm_include_list="${build_xm_include_list} $f"
2053 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2054 build_xm_include_list="${build_xm_include_list} config/$f"
2059 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2060 # cross-compiler which does not use the native headers and libraries.
2061 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2062 CROSS= AC_SUBST(CROSS)
2063 ALL=all.internal AC_SUBST(ALL)
2064 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2065 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2067 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2068 test x$build != x$host || test "x$with_build_sysroot" != x; then
2069 if test "x$with_build_sysroot" != x; then
2070 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2072 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2075 if test x$host != x$target
2077 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2079 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2080 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2081 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2084 if test "x$with_build_sysroot" != "x"; then
2085 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2086 elif test "x$with_sysroot" = x; then
2087 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2088 elif test "x$with_sysroot" = xyes; then
2089 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2091 target_header_dir="${with_sysroot}${native_system_header_dir}"
2094 target_header_dir=${native_system_header_dir}
2097 # If this is a cross-compiler that does not
2098 # have its own set of headers then define
2101 # If this is using newlib, without having the headers available now,
2102 # then define inhibit_libc in LIBGCC2_CFLAGS.
2103 # This prevents libgcc2 from containing any code which requires libc
2105 : ${inhibit_libc=false}
2106 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2107 test x$with_newlib = xyes ; } &&
2108 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2111 AC_SUBST(inhibit_libc)
2113 # When building gcc with a cross-compiler, we need to adjust things so
2114 # that the generator programs are still built with the native compiler.
2115 # Also, we cannot run fixincludes.
2117 # These are the normal (build=host) settings:
2118 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2119 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2120 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2121 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2122 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2123 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2125 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2126 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2128 # And these apply if build != host, or we are generating coverage data
2129 if test x$build != x$host || test "x$coverage_flags" != x
2131 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2132 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2133 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2135 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2136 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2137 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2138 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2140 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2141 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2143 # Expand extra_headers to include complete path.
2144 # This substitutes for lots of t-* files.
2146 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2147 for file in ${extra_headers} ; do
2148 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2151 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2152 if test x"$use_gcc_tgmath" = xyes
2153 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2156 # Define collect2 in Makefile.
2157 case $host_can_use_collect2 in
2159 *) collect2='collect2$(exeext)' ;;
2161 AC_SUBST([collect2])
2163 # Add a definition of USE_COLLECT2 if system wants one.
2164 case $use_collect2 in
2165 no) use_collect2= ;;
2168 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2169 xm_defines="${xm_defines} USE_COLLECT2"
2170 case $host_can_use_collect2 in
2172 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2178 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2179 [Define to the name of the LTO plugin DSO that must be
2180 passed to the linker's -plugin=LIB option.])
2182 # ---------------------------
2183 # Assembler & linker features
2184 # ---------------------------
2186 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2187 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2188 # However when ld-new is first executed from the build tree, libtool will
2189 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2190 # to the build tree. While doing this we need to use the previous-stage
2191 # linker, or we have an infinite loop. The presence of a shell script as
2192 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2193 # the gcc/collect-ld script. So we need to know how libtool works, or
2194 # exec-tool will fail.
2196 m4_defun([_LT_CONFIG_COMMANDS], [])
2199 AC_SUBST(enable_fast_install)
2201 # Identify the assembler which will work hand-in-glove with the newly
2202 # built GCC, so that we can examine its features. This is the assembler
2203 # which will be driven by the driver program.
2205 # If build != host, and we aren't building gas in-tree, we identify a
2206 # build->target assembler and hope that it will have the same features
2207 # as the host->target assembler we'll be using.
2208 gcc_cv_gas_major_version=
2209 gcc_cv_gas_minor_version=
2210 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2212 m4_pattern_allow([AS_FOR_TARGET])dnl
2213 AS_VAR_SET_IF(gcc_cv_as,, [
2214 if test -x "$DEFAULT_ASSEMBLER"; then
2215 gcc_cv_as="$DEFAULT_ASSEMBLER"
2216 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2217 && test -f ../gas/Makefile \
2218 && test x$build = x$host; then
2219 gcc_cv_as=../gas/as-new$build_exeext
2220 elif test -x as$build_exeext; then
2221 # Build using assembler in the current directory.
2222 gcc_cv_as=./as$build_exeext
2223 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2224 gcc_cv_as="$AS_FOR_TARGET"
2226 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2229 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2230 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2231 case "$ORIGINAL_AS_FOR_TARGET" in
2232 ./as | ./as$build_exeext) ;;
2233 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2236 AC_MSG_CHECKING(what assembler to use)
2237 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2238 # Single tree build which includes gas. We want to prefer it
2239 # over whatever linker top-level may have detected, since
2240 # we'll use what we're building after installation anyway.
2241 AC_MSG_RESULT(newly built gas)
2243 _gcc_COMPUTE_GAS_VERSION
2244 in_tree_gas_is_elf=no
2245 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2246 || (grep 'obj_format = multi' ../gas/Makefile \
2247 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2249 in_tree_gas_is_elf=yes
2252 AC_MSG_RESULT($gcc_cv_as)
2258 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2259 [case "${enableval}" in
2265 install_gold_as_default=no
2267 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2268 [case "${enableval}" in
2270 install_gold_as_default=yes
2273 if test x${default_ld} != x; then
2274 install_gold_as_default=yes
2280 AC_MSG_ERROR([invalid --enable-gold argument])
2284 # Identify the linker which will work hand-in-glove with the newly
2285 # built GCC, so that we can examine its features. This is the linker
2286 # which will be driven by the driver program.
2288 # If build != host, and we aren't building gas in-tree, we identify a
2289 # build->target linker and hope that it will have the same features
2290 # as the host->target linker we'll be using.
2291 gcc_cv_gld_major_version=
2292 gcc_cv_gld_minor_version=
2293 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2294 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2295 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2297 AS_VAR_SET_IF(gcc_cv_ld,, [
2298 if test -x "$DEFAULT_LINKER"; then
2299 gcc_cv_ld="$DEFAULT_LINKER"
2300 elif test $install_gold_as_default = yes \
2301 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2302 && test -f ../gold/Makefile \
2303 && test x$build = x$host; then
2304 gcc_cv_ld=../gold/ld-new$build_exeext
2305 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2306 && test -f ../ld/Makefile \
2307 && test x$build = x$host; then
2308 gcc_cv_ld=../ld/ld-new$build_exeext
2309 elif test -x collect-ld$build_exeext; then
2310 # Build using linker in the current directory.
2311 gcc_cv_ld=./collect-ld$build_exeext
2312 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2313 gcc_cv_ld="$LD_FOR_TARGET"
2315 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2318 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2319 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2320 # if the PLUGIN_LD is set ld-new, just have it as ld
2321 # as that is the installed named.
2322 if test x$PLUGIN_LD_SUFFIX = xld-new \
2323 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2326 AC_ARG_WITH(plugin-ld,
2327 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2328 [if test x"$withval" != x; then
2329 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2330 PLUGIN_LD_SUFFIX="$withval"
2332 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2333 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2335 # Check to see if we are using gold instead of ld
2336 AC_MSG_CHECKING(whether we are using gold)
2338 if test x$gcc_cv_ld != x; then
2339 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2340 | grep "GNU gold" > /dev/null; then
2344 AC_MSG_RESULT($ld_is_gold)
2346 AC_MSG_CHECKING(gold linker with split stack support as non default)
2347 # Check to see if default ld is not gold, but gold is
2348 # available and has support for split stack. If gcc was configured
2349 # with gold then no checking is done.
2351 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2353 # For platforms other than powerpc64*, enable as appropriate.
2356 ld_gold=`which ${gcc_cv_ld}.gold`
2357 # Make sure this gold has minimal split stack support
2358 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2359 ld_vers=`$ld_gold --version | sed 1q`
2360 gold_vers=`echo $ld_vers | sed -n \
2361 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2363 # check that the gold version contains the complete split stack support
2364 # on powerpc64 big and little endian
2366 case "$gold_vers" in
2367 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2369 *) gold_non_default=no
2375 if test $gold_non_default = yes; then
2376 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2377 [Define if the gold linker supports split stack and is available as a non-default])
2380 AC_MSG_RESULT($gold_non_default)
2382 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2383 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2384 case "$ORIGINAL_LD_FOR_TARGET" in
2385 ./collect-ld | ./collect-ld$build_exeext) ;;
2386 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2389 AC_MSG_CHECKING(what linker to use)
2390 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2391 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2392 # Single tree build which includes ld. We want to prefer it
2393 # over whatever linker top-level may have detected, since
2394 # we'll use what we're building after installation anyway.
2395 AC_MSG_RESULT(newly built ld)
2397 in_tree_ld_is_elf=no
2398 if (grep 'EMUL = .*elf' ../ld/Makefile \
2399 || grep 'EMUL = .*linux' ../ld/Makefile \
2400 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2401 in_tree_ld_is_elf=yes
2402 elif test "$ld_is_gold" = yes; then
2403 in_tree_ld_is_elf=yes
2405 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
2408 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2409 if test x$gcc_cv_gld_version != x; then
2413 case $gcc_cv_gld_version in
2416 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2419 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2420 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2422 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2423 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2425 AC_MSG_RESULT($gcc_cv_ld)
2427 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2428 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2429 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2432 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2433 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2435 # Figure out what nm we will be using.
2436 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2437 AS_VAR_SET_IF(gcc_cv_nm,, [
2438 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2439 && test -f ../binutils/Makefile \
2440 && test x$build = x$host; then
2441 gcc_cv_nm=../binutils/nm-new$build_exeext
2442 elif test -x nm$build_exeext; then
2443 gcc_cv_nm=./nm$build_exeext
2444 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2445 gcc_cv_nm="$NM_FOR_TARGET"
2447 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2450 AC_MSG_CHECKING(what nm to use)
2451 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2452 # Single tree build which includes binutils.
2453 AC_MSG_RESULT(newly built nm)
2456 AC_MSG_RESULT($gcc_cv_nm)
2460 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2461 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2462 case "$ORIGINAL_NM_FOR_TARGET" in
2463 ./nm | ./nm$build_exeext) ;;
2464 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2468 # Figure out what objdump we will be using.
2469 AS_VAR_SET_IF(gcc_cv_objdump,, [
2470 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2471 && test -f ../binutils/Makefile \
2472 && test x$build = x$host; then
2473 # Single tree build which includes binutils.
2474 gcc_cv_objdump=../binutils/objdump$build_exeext
2475 elif test -x objdump$build_exeext; then
2476 gcc_cv_objdump=./objdump$build_exeext
2477 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2478 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2480 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2483 AC_MSG_CHECKING(what objdump to use)
2484 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2485 # Single tree build which includes binutils.
2486 AC_MSG_RESULT(newly built objdump)
2487 elif test x$gcc_cv_objdump = x; then
2488 AC_MSG_RESULT(not found)
2490 AC_MSG_RESULT($gcc_cv_objdump)
2493 # Figure out what readelf we will be using.
2494 AS_VAR_SET_IF(gcc_cv_readelf,, [
2495 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2496 && test -f ../binutils/Makefile \
2497 && test x$build = x$host; then
2498 # Single tree build which includes binutils.
2499 gcc_cv_readelf=../binutils/readelf$build_exeext
2500 elif test -x readelf$build_exeext; then
2501 gcc_cv_readelf=./readelf$build_exeext
2502 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2503 gcc_cv_readelf="$READELF_FOR_TARGET"
2505 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2508 AC_MSG_CHECKING(what readelf to use)
2509 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2510 # Single tree build which includes binutils.
2511 AC_MSG_RESULT(newly built readelf)
2512 elif test x$gcc_cv_readelf = x; then
2513 AC_MSG_RESULT(not found)
2515 AC_MSG_RESULT($gcc_cv_readelf)
2518 # Figure out what assembler alignment features are present.
2519 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2523 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2524 [Define if your assembler supports .balign and .p2align.])])
2526 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2529 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2530 [Define if your assembler supports specifying the maximum number
2531 of bytes to skip when using the GAS .p2align command.])])
2533 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2536 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2537 [Define if your assembler supports .literal16.])])
2539 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2541 [conftest_label1: .word 0
2543 conftest_label2: .word 0
2545 [if test x$gcc_cv_nm != x; then
2546 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2547 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2548 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2550 else gcc_cv_as_subsection_m1=yes
2552 rm -f conftest.nm1 conftest.nm2
2554 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2555 [Define if your assembler supports .subsection and .subsection -1 starts
2556 emitting at the beginning of your section.])])
2558 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2561 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2563 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2565 [ .weakref foobar, barfnot],,
2566 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2568 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2571 .NSUBSPA $CODE$,COMDAT],,
2572 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2574 # .hidden needs to be supported in both the assembler and the linker,
2575 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2576 # This is irritatingly difficult to feature test for; we have to check the
2577 # date string after the version number. If we've got an in-tree
2578 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2580 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2583 conftest_s=' .globl foobar,hidden'
2586 conftest_s=' .hidden foobar
2590 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2591 [elf,2,13,0],, [$conftest_s])
2594 # Darwin as has some visibility support, though with a different syntax.
2595 gcc_cv_as_hidden=yes
2599 # gnu_indirect_function type is an extension proposed at
2600 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2601 # selection of function implementation
2602 AC_ARG_ENABLE(gnu-indirect-function,
2603 [AS_HELP_STRING([--enable-gnu-indirect-function],
2604 [enable the use of the @gnu_indirect_function to glibc systems])],
2605 [case $enable_gnu_indirect_function in
2607 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2608 Valid choices are 'yes' and 'no'.]) ;;
2610 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2612 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2613 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2614 [Define if your system supports gnu indirect functions.])
2618 if test $in_tree_ld != yes ; then
2619 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2620 if echo "$ld_ver" | grep GNU > /dev/null; then
2621 if test x"$ld_is_gold" = xyes; then
2622 # GNU gold --version looks like this:
2624 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2626 # We extract the binutils version which is more familiar and specific
2627 # than the gold version.
2628 ld_vers=`echo $ld_ver | sed -n \
2629 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2631 # GNU ld --version looks like this:
2633 # GNU ld (GNU Binutils) 2.21.51.20110225
2634 ld_vers=`echo $ld_ver | sed -n \
2635 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2637 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2638 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2639 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2640 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2644 # Solaris 2 ld -V output looks like this for a regular version:
2646 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2648 # but test versions add stuff at the end:
2650 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2652 # In Solaris 11.4, this was changed to
2654 # ld: Solaris ELF Utilities: 11.4-1.3123
2656 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2657 # numbers can be used in ld.so.1 feature checks even if a different
2658 # linker is configured.
2659 ld_ver=`$gcc_cv_ld -V 2>&1`
2660 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2661 ld_vers=`echo $ld_ver | sed -n \
2662 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2663 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2664 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2672 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2673 [[if test $in_tree_ld = yes ; then
2675 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2676 && test $in_tree_ld_is_elf = yes; then
2677 gcc_cv_ld_hidden=yes
2680 gcc_cv_ld_hidden=yes
2681 if test x"$ld_is_gold" = xyes; then
2683 elif echo "$ld_ver" | grep GNU > /dev/null; then
2685 mmix-knuth-mmixware)
2686 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2690 if test 0"$ld_date" -lt 20020404; then
2691 if test -n "$ld_date"; then
2692 # If there was date string, but was earlier than 2002-04-04, fail
2694 elif test -z "$ld_vers"; then
2695 # If there was no date string nor ld version number, something is wrong
2698 test -z "$ld_vers_patch" && ld_vers_patch=0
2699 if test "$ld_vers_major" -lt 2; then
2701 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2702 gcc_cv_ld_hidden="no"
2703 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2711 gcc_cv_ld_hidden=yes
2714 # Darwin ld has some visibility support.
2715 gcc_cv_ld_hidden=yes
2717 hppa64*-*-hpux* | ia64*-*-hpux*)
2718 gcc_cv_ld_hidden=yes
2720 *-*-solaris2.1[0-9]*)
2721 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2722 # .symbolic was only added in Solaris 9 12/02.
2723 gcc_cv_ld_hidden=yes
2731 libgcc_visibility=no
2732 AC_SUBST(libgcc_visibility)
2733 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2734 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2735 libgcc_visibility=yes
2736 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2737 [Define if your assembler and linker support .hidden.])
2740 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2741 gcc_cv_ld_ro_rw_mix=unknown
2742 if test $in_tree_ld = yes ; then
2743 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2744 && test $in_tree_ld_is_elf = yes; then
2745 gcc_cv_ld_ro_rw_mix=read-write
2747 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2748 echo '.section myfoosect, "a"' > conftest1.s
2749 echo '.section myfoosect, "aw"' > conftest2.s
2750 echo '.byte 1' >> conftest2.s
2751 echo '.section myfoosect, "a"' > conftest3.s
2752 echo '.byte 0' >> conftest3.s
2753 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2754 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2755 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2756 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2757 conftest2.o conftest3.o > /dev/null 2>&1; then
2758 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2759 | sed -e '/myfoosect/!d' -e N`
2760 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2761 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2762 gcc_cv_ld_ro_rw_mix=read-only
2764 gcc_cv_ld_ro_rw_mix=read-write
2769 rm -f conftest.* conftest[123].*
2772 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2773 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2774 [Define if your linker links a mix of read-only
2775 and read-write sections into a read-write section.])
2777 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2779 gcc_AC_INITFINI_ARRAY
2781 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2782 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2790 [[# GAS versions before 2.11 do not support uleb128,
2791 # despite appearing to.
2792 # ??? There exists an elf-specific test that will crash
2793 # the assembler. Perhaps it's better to figure out whether
2794 # arbitrary sections are supported and try the test.
2795 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2796 if echo "$as_ver" | grep GNU > /dev/null; then
2797 as_vers=`echo $as_ver | sed -n \
2798 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2799 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2800 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2801 if test $as_major -eq 2 && test $as_minor -lt 11
2803 else gcc_cv_as_leb128=yes
2806 [AC_DEFINE(HAVE_AS_LEB128, 1,
2807 [Define if your assembler supports .sleb128 and .uleb128.])],
2808 [AC_DEFINE(HAVE_AS_LEB128, 0,
2809 [Define if your assembler supports .sleb128 and .uleb128.])])
2811 # Determine if an .eh_frame section is read-only.
2812 gcc_fn_eh_frame_ro () {
2813 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2814 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2815 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2818 # Check if we have assembler support for unwind directives.
2819 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2826 .cfi_escape 1, 2, 3, 4, 5
2830 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2831 # read-only and read-write sections, we need to make sure that the
2832 # assembler used emits read-write .eh_frame sections.
2833 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2834 gcc_cv_as_cfi_directive=yes
2835 elif test "x$gcc_cv_objdump" = x; then
2836 # No objdump, err on the side of caution.
2837 gcc_cv_as_cfi_directive=no
2839 if test x$gas = xyes; then
2847 sparc*-*-solaris2.*)
2848 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2849 if gcc_fn_eh_frame_ro $as_32_opt \
2850 || gcc_fn_eh_frame_ro $as_64_opt; then
2851 gcc_cv_as_cfi_directive=no
2853 gcc_cv_as_cfi_directive=yes
2856 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2857 # On Solaris/x86, make sure that GCC and assembler agree on using
2858 # read-only .eh_frame sections for 64-bit.
2859 if gcc_fn_eh_frame_ro $as_32_opt; then
2860 gcc_cv_as_cfi_directive=no
2861 elif gcc_fn_eh_frame_ro $as_64_opt; then
2862 gcc_cv_as_cfi_directive=yes
2864 gcc_cv_as_cfi_directive=no
2871 gcc_cv_as_cfi_directive=yes
2874 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2875 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2879 .cfi_adjust_cfa_offset 64
2881 .cfi_adjust_cfa_offset 128
2884 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2885 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2886 gcc_cv_as_cfi_advance_working=yes
2890 # no objdump, err on the side of caution
2891 gcc_cv_as_cfi_advance_working=no
2893 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2894 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2895 [`if test $gcc_cv_as_cfi_directive = yes \
2896 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2897 [Define 0/1 if your assembler supports CFI directives.])
2899 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2900 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2901 gcc_cv_as_cfi_personality_directive, ,,
2904 .cfi_personality 0, symbol
2906 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2907 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2908 then echo 1; else echo 0; fi`],
2909 [Define 0/1 if your assembler supports .cfi_personality.])
2911 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2912 gcc_cv_as_cfi_sections_directive, ,,
2914 .cfi_sections .debug_frame, .eh_frame
2918 win32 | pe | cygwin* | mingw32*)
2919 # Need to check that we generated the correct relocation for the
2920 # .debug_frame section. This was fixed for binutils 2.21.
2921 gcc_cv_as_cfi_sections_directive=no
2922 if test "x$gcc_cv_objdump" != x; then
2923 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2924 grep secrel > /dev/null; then
2925 gcc_cv_as_cfi_sections_directive=yes
2930 gcc_cv_as_cfi_sections_directive=yes
2933 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2934 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2935 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2936 then echo 1; else echo 0; fi`],
2937 [Define 0/1 if your assembler supports .cfi_sections.])
2939 # GAS versions up to and including 2.11.0 may mis-optimize
2941 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2949 .section .eh_frame,"aw",@progbits
2951 .4byte .LECIE1-.LSCIE1
2965 .4byte .LEFDE1-.LASFDE1
2967 .4byte .LASFDE1-__FRAME_BEGIN__
2975 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2976 cat > conftest.lit <<EOF
2977 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2978 0010 01000000 12000000 18000000 00000000 ................
2979 0020 08000000 04080000 0044 .........D @&t@
2981 cat > conftest.big <<EOF
2982 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2983 0010 00000001 00000012 00000018 00000000 ................
2984 0020 00000008 04000000 0844 .........D @&t@
2986 # If the assembler didn't choke, and we can objdump,
2987 # and we got the correct data, then succeed.
2988 # The text in the here-document typically retains its unix-style line
2989 # endings, while the output of objdump will use host line endings.
2990 # Therefore, use diff -b for the comparisons.
2991 if test x$gcc_cv_objdump != x \
2992 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2993 | tail -3 > conftest.got \
2994 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2995 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2997 gcc_cv_as_eh_frame=yes
2998 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2999 gcc_cv_as_eh_frame=buggy
3001 # Uh oh, what do we do now?
3002 gcc_cv_as_eh_frame=no
3005 if test $gcc_cv_as_eh_frame = buggy; then
3006 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3007 [Define if your assembler mis-optimizes .eh_frame data.])
3010 # Test if the assembler supports the section flag 'e' or #exclude for
3011 # specifying an excluded section.
3012 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3013 [2,22,51], [--fatal-warnings],
3016 if test $gcc_cv_as_section_exclude_e = no; then
3018 # Solaris as uses #exclude instead.
3022 conftest_s='.section "foo1", #exclude'
3024 i?86-*-solaris2* | x86_64-*-solaris2*)
3025 conftest_s='.section foo1, #exclude'
3030 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3034 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3035 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3036 [Define if your assembler supports specifying the exclude section flag.])
3038 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3039 [elf,2,12,0], [--fatal-warnings],
3040 [.section .rodata.str, "aMS", @progbits, 1])
3041 if test $gcc_cv_as_shf_merge = no; then
3042 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3043 [elf,2,12,0], [--fatal-warnings],
3044 [.section .rodata.str, "aMS", %progbits, 1])
3047 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
3048 # SHF_MERGE support in Solaris 10/x86 ld is broken.
3049 if test x"$gnu_ld" = xno; then
3050 gcc_cv_as_shf_merge=no
3054 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3055 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3056 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3058 gcc_cv_ld_aligned_shf_merge=yes
3060 # While Solaris 10/SPARC ld isn't affected, disable to avoid problems
3061 # relinking on Solaris 11 < 11.4.
3062 sparc*-*-solaris2.10*)
3063 if test x"$gnu_ld" = xno; then
3064 gcc_cv_ld_aligned_shf_merge=no
3067 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3069 sparc*-*-solaris2.11*)
3070 if test x"$gnu_ld" = xno \
3071 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3072 gcc_cv_ld_aligned_shf_merge=no
3076 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3077 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3078 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3080 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3081 [.stabs "gcc2_compiled.",60,0,0,0],,
3082 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3083 [Define if your assembler supports .stabs.])])
3085 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3086 gcc_cv_as_comdat_group,
3087 [elf,2,16,0], [--fatal-warnings],
3088 [.section .text,"axG",@progbits,.foo,comdat])
3089 if test $gcc_cv_as_comdat_group = yes; then
3090 gcc_cv_as_comdat_group_percent=no
3091 gcc_cv_as_comdat_group_group=no
3093 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3094 gcc_cv_as_comdat_group_percent,
3095 [elf,2,16,0], [--fatal-warnings],
3096 [.section .text,"axG",%progbits,.foo,comdat])
3097 if test $gcc_cv_as_comdat_group_percent = yes; then
3098 gcc_cv_as_comdat_group_group=no
3101 # Sun as uses a completely different syntax.
3106 .group foo,".text%foo",#comdat
3107 .section ".text%foo", #alloc,#execinstr,#progbits
3112 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3114 .group foo,.text%foo,#comdat
3115 .section .text%foo, "ax", @progbits
3121 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3122 gcc_cv_as_comdat_group_group,
3126 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3127 gcc_cv_as_comdat_group_group=no
3131 if test x"$ld_is_gold" = xyes; then
3133 elif test $in_tree_ld = yes ; then
3135 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3136 && test $in_tree_ld_is_elf = yes; then
3139 elif echo "$ld_ver" | grep GNU > /dev/null; then
3141 if test 0"$ld_date" -lt 20050308; then
3142 if test -n "$ld_date"; then
3143 # If there was date string, but was earlier than 2005-03-08, fail
3145 elif test "$ld_vers_major" -lt 2; then
3147 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3154 *-*-solaris2.1[1-9]*)
3156 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3157 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3160 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3161 # least ld version 1.2267.
3162 if test "$ld_vers_major" -gt 1; then
3164 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3166 elif test "$ld_vers_minor" -ge 2267; then
3171 # Assume linkers other than GNU ld don't support COMDAT group.
3177 # Allow overriding the automatic COMDAT group tests above.
3178 AC_ARG_ENABLE(comdat,
3179 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3180 [comdat_group="$enable_comdat"])
3181 if test $comdat_group = no; then
3182 gcc_cv_as_comdat_group=no
3183 gcc_cv_as_comdat_group_percent=no
3184 gcc_cv_as_comdat_group_group=no
3186 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3187 [`if test $gcc_cv_as_comdat_group = yes \
3188 || test $gcc_cv_as_comdat_group_percent = yes \
3189 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3190 [Define 0/1 if your assembler and linker support COMDAT groups.])
3192 # Restrict this test to Solaris/x86: other targets define this statically.
3194 i?86-*-solaris2* | x86_64-*-solaris2*)
3195 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3196 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3200 # Full support for hidden thunks in linkonce sections only appeared in
3201 # Solaris 11/OpenSolaris.
3202 *-*-solaris2.1[[1-9]]*)
3210 AC_MSG_RESULT($hidden_linkonce)
3211 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3212 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3213 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3217 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3222 .loc 1 1 0 is_stmt 1],,
3223 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3224 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3226 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3227 gcc_cv_as_discriminator,
3231 .loc 1 1 0 discriminator 1],,
3232 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3233 [Define if your assembler supports the .loc discriminator sub-directive.])])
3235 # Thread-local storage - the check is heavily parameterized.
3244 .section ".tdata","awT",@progbits
3247 ldq $27,__tls_get_addr($29) !literal!1
3248 lda $16,foo($29) !tlsgd!1
3249 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3250 ldq $27,__tls_get_addr($29) !literal!2
3251 lda $16,foo($29) !tlsldm!2
3252 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3253 ldq $1,foo($29) !gotdtprel
3254 ldah $2,foo($29) !dtprelhi
3255 lda $3,foo($2) !dtprello
3256 lda $4,foo($29) !dtprel
3257 ldq $1,foo($29) !gottprel
3258 ldah $2,foo($29) !tprelhi
3259 lda $3,foo($2) !tprello
3260 lda $4,foo($29) !tprel'
3263 tls_as_opt=--fatal-warnings
3267 add_s r0,r0, @foo@tpoff'
3271 cris-*-*|crisv32-*-*)
3273 .section ".tdata","awT",@progbits
3280 tls_as_opt=--fatal-warnings
3284 .section ".tdata","awT",@progbits
3296 .section ".tdata","awT",@progbits
3300 addil LT%foo-$tls_gdidx$,gp
3301 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3304 addil LT%foo-$tls_ldidx$,gp
3306 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3307 addil LR%foo-$tls_dtpoff$,%ret0
3308 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3310 addil LT%foo-$tls_ieoff$,gp
3311 ldw RT%foo-$tls_ieoff$(%r1),%t2
3314 addil LR%foo-$tls_leoff$,%t1
3315 ldo RR%foo-$tls_leoff$(%r1),%t2'
3318 tls_as_opt=--fatal-warnings
3322 .section ".tdata","awT",%progbits
3333 i[34567]86-*-* | x86_64-*-*)
3335 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3342 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3344 .section .tdata,"awt",@progbits'
3349 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3350 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3354 .section ".tdata","awT",@progbits'
3358 tls_as_opt="--fatal-warnings"
3362 conftest_s="$conftest_s
3366 leal foo@tlsgd(,%ebx,1), %eax
3367 leal foo@tlsldm(%ebx), %eax
3368 leal foo@dtpoff(%eax), %edx
3369 movl foo@gottpoff(%ebx), %eax
3370 subl foo@gottpoff(%ebx), %eax
3371 addl foo@gotntpoff(%ebx), %eax
3372 movl foo@indntpoff, %eax
3373 movl \$foo@tpoff, %eax
3374 subl \$foo@tpoff, %eax
3375 leal foo@ntpoff(%ecx), %eax"
3378 if test x$on_solaris = xyes; then
3380 yes) tls_as_opt="$tls_as_opt --64" ;;
3381 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3384 conftest_s="$conftest_s
3388 leaq foo@tlsgd(%rip), %rdi
3389 leaq foo@tlsld(%rip), %rdi
3390 leaq foo@dtpoff(%rax), %rdx
3391 movq foo@gottpoff(%rip), %rax
3392 movq \$foo@tpoff, %rax"
3398 .section ".tdata","awT",@progbits
3401 addl r16 = @ltoff(@dtpmod(foo#)), gp
3402 addl r17 = @ltoff(@dtprel(foo#)), gp
3403 addl r18 = @ltoff(@tprel(foo#)), gp
3404 addl r19 = @dtprel(foo#), gp
3405 adds r21 = @dtprel(foo#), r13
3406 movl r23 = @dtprel(foo#)
3407 addl r20 = @tprel(foo#), gp
3408 adds r22 = @tprel(foo#), r13
3409 movl r24 = @tprel(foo#)'
3412 tls_as_opt=--fatal-warnings
3416 .section .tdata,"awT",@progbits
3420 addik r5,r20,x@TLSGD
3421 addik r5,r20,x@TLSLDM'
3424 tls_as_opt='--fatal-warnings'
3428 .section .tdata,"awT",@progbits
3432 addiu $4, $28, %tlsgd(x)
3433 addiu $4, $28, %tlsldm(x)
3434 lui $4, %dtprel_hi(x)
3435 addiu $4, $4, %dtprel_lo(x)
3436 lw $4, %gottprel(x)($28)
3437 lui $4, %tprel_hi(x)
3438 addiu $4, $4, %tprel_lo(x)'
3441 tls_as_opt='-32 --fatal-warnings'
3445 .section .tdata,"awT",@progbits
3450 move.l x@TLSGD(%a5),%a0
3451 move.l x@TLSLDM(%a5),%a0
3452 move.l x@TLSLDO(%a5),%a0
3453 move.l x@TLSIE(%a5),%a0
3454 move.l x@TLSLE(%a5),%a0'
3457 tls_as_opt='--fatal-warnings'
3461 .section ".tdata","awT",@progbits'
3464 tls_as_opt="--fatal-warnings"
3468 .section ".tdata","awT",%progbits
3472 add x0, x0, #:tlsgd_lo12:x
3477 tls_as_opt='--fatal-warnings'
3481 .extern __get_tpointer
3499 .section ".tdata","awT",@progbits
3507 addi 3,2,ld0@got@tlsgd
3513 addi 3,2,x1@got@tlsld
3519 addis 9,3,x2@dtprel@ha
3520 addi 9,9,x2@dtprel@l
3523 ld 9,x3@got@dtprel(2)
3529 tls_as_opt="-a64 --fatal-warnings"
3533 .section ".tdata","awT",@progbits
3541 addi 3,31,ld0@got@tlsgd
3543 addi 3,31,x1@got@tlsld
3546 addis 9,3,x2@dtprel@ha
3547 addi 9,9,x2@dtprel@l
3548 lwz 9,x3@got@tprel(31)
3551 addis 9,2,x2@tprel@ha
3552 addi 9,9,x2@tprel@l'
3555 tls_as_opt="-a32 --fatal-warnings"
3559 .section .tdata,"awT",@progbits
3563 call __tls_get_addr'
3566 tls_as_opt='--fatal-warnings'
3570 .section ".tdata","awT",@progbits
3579 l %r1,foo@GOTNTPOFF(%r12)
3580 l %r1,0(%r1):tls_load:foo
3581 bas %r14,0(%r1,%r13):tls_gdcall:foo
3582 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3585 tls_as_opt="-m31 --fatal-warnings"
3589 .section ".tdata","awT",@progbits
3597 lg %r1,foo@GOTNTPOFF(%r12)
3598 larl %r1,foo@INDNTPOFF
3599 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3600 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3603 tls_as_opt="-m64 -Aesame --fatal-warnings"
3605 sh-*-* | sh[123456789lbe]*-*-*)
3607 .section ".tdata","awT",@progbits
3617 tls_as_opt=--fatal-warnings
3621 sparc*-sun-solaris2.*)
3628 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3630 .section ".tdata",#alloc,#write,#tls'
3635 .section ".tdata","awT",@progbits'
3638 tls_as_opt="-32 --fatal-warnings"
3640 conftest_s="$conftest_s
3643 sethi %tgd_hi22(foo), %o0
3644 add %o0, %tgd_lo10(foo), %o1
3645 add %l7, %o1, %o0, %tgd_add(foo)
3646 call __tls_get_addr, %tgd_call(foo)
3647 sethi %tldm_hi22(foo), %l1
3648 add %l1, %tldm_lo10(foo), %l2
3649 add %l7, %l2, %o0, %tldm_add(foo)
3650 call __tls_get_addr, %tldm_call(foo)
3651 sethi %tldo_hix22(foo), %l3
3652 xor %l3, %tldo_lox10(foo), %l4
3653 add %o0, %l4, %l5, %tldo_add(foo)
3654 sethi %tie_hi22(foo), %o3
3655 add %o3, %tie_lo10(foo), %o3
3656 ld [%l7 + %o3], %o2, %tie_ld(foo)
3657 add %g7, %o2, %o4, %tie_add(foo)
3658 sethi %tle_hix22(foo), %l1
3659 xor %l1, %tle_lox10(foo), %o5
3660 ld [%g7 + %o5], %o1"
3664 .section ".tdata","awT",@progbits
3667 addli r0, zero, tls_gd(foo)
3668 auli r0, zero, tls_gd_ha16(foo)
3669 addli r0, r0, tls_gd_lo16(foo)
3671 addli r0, zero, tls_ie(foo)
3672 auli r0, r0, tls_ie_ha16(foo)
3673 addli r0, r0, tls_ie_lo16(foo)'
3676 tls_as_opt="--fatal-warnings"
3680 .section ".tdata","awT",@progbits
3683 shl16insli r0, zero, hw0_last_tls_gd(foo)
3684 shl16insli r0, zero, hw1_last_tls_gd(foo)
3685 shl16insli r0, r0, hw0_tls_gd(foo)
3687 shl16insli r0, zero, hw1_last_tls_ie(foo)
3688 shl16insli r0, r0, hw0_tls_ie(foo)'
3691 tls_as_opt="--fatal-warnings"
3695 .section ".tdata","awT",@progbits
3698 movi a8, foo@TLSFUNC
3699 movi a10, foo@TLSARG
3700 callx8.tls a8, foo@TLSCALL'
3707 if test "x$enable_tls" = xno ; then
3708 : # TLS explicitly disabled.
3709 elif test "x$enable_tls" = xyes ; then
3710 set_have_as_tls=yes # TLS explicitly enabled.
3711 elif test -z "$tls_first_major"; then
3712 : # If we don't have a check, assume no support.
3714 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3715 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3716 [set_have_as_tls=yes])
3718 if test $set_have_as_tls = yes ; then
3719 AC_DEFINE(HAVE_AS_TLS, 1,
3720 [Define if your assembler and linker support thread-local storage.])
3723 # Target-specific assembler checks.
3725 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3726 gcc_cv_ld_static_dynamic=no
3727 gcc_cv_ld_static_option='-Bstatic'
3728 gcc_cv_ld_dynamic_option='-Bdynamic'
3729 if test $in_tree_ld = yes ; then
3730 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3731 gcc_cv_ld_static_dynamic=yes
3733 elif test x$gcc_cv_ld != x; then
3734 # Check if linker supports -Bstatic/-Bdynamic option
3735 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3736 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3737 gcc_cv_ld_static_dynamic=yes
3740 # AIX ld uses -b flags
3741 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3742 gcc_cv_ld_static_dynamic=yes
3743 gcc_cv_ld_static_option="-bstatic"
3744 gcc_cv_ld_dynamic_option="-bdynamic"
3746 # HP-UX ld uses -a flags to select between shared and archive.
3748 if test x"$gnu_ld" = xno; then
3749 gcc_cv_ld_static_dynamic=yes
3750 gcc_cv_ld_static_option="-aarchive_shared"
3751 gcc_cv_ld_dynamic_option="-adefault"
3754 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3756 gcc_cv_ld_static_dynamic=yes
3761 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3762 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3763 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3764 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3765 [Define to the linker option to disable use of shared objects.])
3766 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3767 [Define to the linker option to enable use of shared objects.])
3769 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3771 AC_MSG_CHECKING(linker --version-script option)
3772 gcc_cv_ld_version_script=no
3773 ld_version_script_option=''
3774 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3775 gcc_cv_ld_version_script=yes
3776 ld_version_script_option='--version-script'
3777 elif test x$gcc_cv_ld != x; then
3779 # Solaris 2 ld always supports -M. It also supports a subset of
3780 # --version-script since Solaris 11.4, but requires
3781 # -z gnu-version-script-compat to activate.
3783 gcc_cv_ld_version_script=yes
3784 ld_version_script_option='-M'
3788 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3789 AC_MSG_RESULT($gcc_cv_ld_version_script)
3790 AC_SUBST(ld_version_script_option)
3792 AC_MSG_CHECKING(linker soname option)
3794 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3795 gcc_cv_ld_soname=yes
3796 ld_soname_option='-soname'
3797 elif test x$gcc_cv_ld != x; then
3800 gcc_cv_ld_soname=yes
3801 ld_soname_option='-install_name'
3803 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3804 # ld compatiblity since some Solaris 10 update.
3806 gcc_cv_ld_soname=yes
3807 ld_soname_option='-h'
3811 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3812 AC_MSG_RESULT($gcc_cv_ld_soname)
3813 AC_SUBST(ld_soname_option)
3815 if test x"$demangler_in_ld" = xyes; then
3816 AC_MSG_CHECKING(linker --demangle support)
3817 gcc_cv_ld_demangle=no
3818 if test $in_tree_ld = yes; then
3819 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3820 gcc_cv_ld_demangle=yes
3822 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3823 # Check if the GNU linker supports --demangle option
3824 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3825 gcc_cv_ld_demangle=yes
3828 if test x"$gcc_cv_ld_demangle" = xyes; then
3829 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3830 [Define if your linker supports --demangle option.])
3832 AC_MSG_RESULT($gcc_cv_ld_demangle)
3835 AC_MSG_CHECKING(linker plugin support)
3837 if test -f liblto_plugin.la; then
3838 save_ld_ver="$ld_ver"
3839 save_ld_vers_major="$ld_vers_major"
3840 save_ld_vers_minor="$ld_vers_minor"
3841 save_ld_is_gold="$ld_is_gold"
3845 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3847 # FIXME: ld_is_gold?
3848 ld_vers_major="$gcc_cv_gld_major_version"
3849 ld_vers_minor="$gcc_cv_gld_minor_version"
3851 # Determine plugin linker version.
3852 # FIXME: Partial duplicate from above, generalize.
3854 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3855 if echo "$ld_ver" | grep GNU > /dev/null; then
3856 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3858 ld_vers=`echo $ld_ver | sed -n \
3859 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3861 ld_vers=`echo $ld_ver | sed -n \
3862 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3864 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3865 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3870 # Determine plugin support.
3871 if echo "$ld_ver" | grep GNU > /dev/null; then
3872 # Require GNU ld or gold 2.21+ for plugin support by default.
3873 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3875 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3876 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3881 ld_ver="$save_ld_ver"
3882 ld_vers_major="$save_ld_vers_major"
3883 ld_vers_minor="$save_ld_vers_minor"
3884 ld_is_gold="$save_ld_is_gold"
3886 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3887 [Define to the level of your linker's plugin support.])
3888 AC_MSG_RESULT($gcc_cv_lto_plugin)
3890 # Target OS-specific assembler checks.
3892 case "$target_os" in
3894 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3895 gcc_cv_as_mmacosx_version_min,,
3896 [-mmacosx-version-min=10.1], [.text],,
3897 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3898 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3902 # Target CPU-specific assembler checks.
3906 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3907 [-mabi=lp64], [.text],,,)
3908 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3909 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3910 [Define if your assembler supports the -mabi option.])
3912 if test x$with_abi = xilp32; then
3913 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3914 Upgrade the Assembler.])
3916 if test x"$with_multilib_list" = xdefault; then
3917 TM_MULTILIB_CONFIG=lp64
3919 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3920 for aarch64_multilib in ${aarch64_multilibs}; do
3921 case ${aarch64_multilib} in
3923 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3924 Upgrade the Assembler.])
3932 # Check if we have binutils support for relocations types needed by -fpic
3933 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3936 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3937 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3938 [Define if your assembler supports relocs needed by -fpic.])])
3939 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3940 AC_ARG_ENABLE(fix-cortex-a53-835769,
3942 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3943 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3944 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3945 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3950 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3955 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3956 Valid choices are 'yes' and 'no'.])
3962 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3963 AC_ARG_ENABLE(fix-cortex-a53-843419,
3965 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3966 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3967 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3968 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3973 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3978 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3979 Valid choices are 'yes' and 'no'.])
3987 # All TARGET_ABI_OSF targets.
3988 alpha*-*-linux* | alpha*-*-*bsd*)
3989 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3990 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3993 extbl $3, $2, $3 !lituse_bytoff!1
3994 ldq $2, a($29) !literal!1
3995 ldq $4, b($29) !literal!2
3996 ldq_u $3, 0($2) !lituse_base!1
3997 ldq $27, f($29) !literal!5
3998 jsr $26, ($27), f !lituse_jsr!5
3999 ldah $29, 0($26) !gpdisp!3
4000 lda $0, c($29) !gprel
4001 ldah $1, d($29) !gprelhigh
4002 lda $1, d($1) !gprellow
4003 lda $29, 0($29) !gpdisp!3],,
4004 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4005 [Define if your assembler supports explicit relocations.])])
4006 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4007 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4010 ldq $27, a($29) !literal!1
4011 jsr $26, ($27), a !lituse_jsrdirect!1],,
4012 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4013 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4017 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4018 [--mlink-relax], [.text],,
4019 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4020 [Define if your avr assembler supports --mlink-relax option.])])
4022 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4024 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4025 [Define if your avr assembler supports -mrmw option.])])
4027 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4028 gcc_cv_as_avr_mgccisr,,
4034 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4035 [Define if your avr assembler supports -mgcc-isr option.])])
4037 # Check how default linker description file implements .rodata for
4038 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4039 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4040 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4041 cat > conftest.s <<EOF
4042 .section .rodata,"a",@progbits
4044 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4049 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4050 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4051 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4052 if test -s conftest.nm
4054 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4056 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4057 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4059 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4060 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4061 cat conftest.nm >&AS_MESSAGE_LOG_FD
4062 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4063 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4066 AC_MSG_RESULT(test failed)
4067 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4068 cat conftest.s >&AS_MESSAGE_LOG_FD
4069 AC_MSG_WARN([[see `config.log' for details]])
4071 rm -f conftest.s conftest.o conftest.elf conftest.nm
4075 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4076 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4077 [-no-mul-bug-abort], [.text],,
4078 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4079 [Define if your assembler supports the -no-mul-bug-abort option.])])
4083 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
4084 [.register %g2, #scratch],,
4085 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
4086 [Define if your assembler supports .register.])])
4088 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4090 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4091 [Define if your assembler supports -relax option.])])
4093 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4094 gcc_cv_as_sparc_gotdata_op,,
4101 sethi %gdop_hix22(foo), %g1
4102 xor %g1, %gdop_lox10(foo), %g1
4103 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4104 [if test x$gcc_cv_ld != x \
4105 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4106 if test x$gcc_cv_objdump != x; then
4107 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4108 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4109 gcc_cv_as_sparc_gotdata_op=no
4111 gcc_cv_as_sparc_gotdata_op=yes
4116 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4117 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4119 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4120 gcc_cv_as_sparc_ua_pcrel,,
4128 .uaword %r_disp32(foo)],
4129 [if test x$gcc_cv_ld != x \
4130 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4131 gcc_cv_as_sparc_ua_pcrel=yes
4134 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4135 [Define if your assembler and linker support unaligned PC relative relocs.])
4137 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4138 gcc_cv_as_sparc_ua_pcrel_hidden,,
4143 .uaword %r_disp32(foo)
4144 .byte 0x32, 0x33, 0x34
4149 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4150 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4151 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4152 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4153 if $gcc_cv_objdump -R conftest 2> /dev/null \
4154 | grep 'DISP32' > /dev/null 2>&1; then
4157 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4161 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4162 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4163 ]) # unaligned pcrel relocs
4165 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4166 gcc_cv_as_sparc_offsetable_lo10,,
4169 or %g1, %lo(ab) + 12, %g1
4170 or %g1, %lo(ab + 12), %g1],
4171 [if test x$gcc_cv_objdump != x \
4172 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4173 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4174 gcc_cv_as_sparc_offsetable_lo10=yes
4176 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4177 [Define if your assembler supports offsetable %lo().])])
4179 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4180 gcc_cv_as_sparc_fmaf,,
4183 .register %g2, #scratch
4184 .register %g3, #scratch
4186 fmaddd %f0, %f2, %f4, %f6
4187 addxccc %g1, %g2, %g3
4188 fsrl32 %f2, %f4, %f8
4189 fnaddd %f10, %f12, %f14],,
4190 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4191 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4193 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4194 gcc_cv_as_sparc_sparc4,,
4197 .register %g2, #scratch
4198 .register %g3, #scratch
4201 1: cwbneg %g2, %g3, 1f
4204 aes_kexpand0 %f4, %f6, %f8
4205 des_round %f38, %f40, %f42, %f44
4206 camellia_f %f54, %f56, %f58, %f60
4207 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4208 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4209 [Define if your assembler supports SPARC4 instructions.])])
4211 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4212 gcc_cv_as_sparc_sparc5,,
4215 .register %g2, #scratch
4216 .register %g3, #scratch
4219 fpadd8 %f0, %f2, %f4],,
4220 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4221 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4223 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4224 gcc_cv_as_sparc_sparc6,,
4227 .register %g2, #scratch
4228 .register %g3, #scratch
4231 fpsll64x %f0, %f2, %f4],,
4232 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4233 [Define if your assembler supports SPARC6 instructions.])])
4235 gcc_GAS_CHECK_FEATURE([LEON instructions],
4236 gcc_cv_as_sparc_leon,,
4239 .register %g2, #scratch
4240 .register %g3, #scratch
4244 casa [[%g2]] 0xb, %g3, %g1],,
4245 [AC_DEFINE(HAVE_AS_LEON, 1,
4246 [Define if your assembler supports LEON instructions.])])
4250 i[34567]86-*-* | x86_64-*-*)
4254 # Full C++ conformance when using a shared libstdc++-v3 requires some
4255 # support from the Cygwin DLL, which in more recent versions exports
4256 # wrappers to aid in interposing and redirecting operators new, delete,
4257 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4258 # are configuring for a version of Cygwin that exports the wrappers.
4259 if test x$host = x$target && test x$host_cpu = xi686; then
4260 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4262 # Can't check presence of libc functions during cross-compile, so
4263 # we just have to assume we're building for an up-to-date target.
4264 gcc_ac_cygwin_dll_wrappers=yes
4266 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4267 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4268 [Define if you want to generate code by default that assumes that the
4269 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4272 cygwin* | pe | mingw32*)
4273 # Recent binutils allows the three-operand form of ".comm" on PE. This
4274 # definition is used unconditionally to initialise the default state of
4275 # the target option variable that governs usage of the feature.
4276 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4277 [2,19,52],,[.comm foo,1,32])
4278 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4279 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4280 [Define if your assembler supports specifying the alignment
4281 of objects allocated using the GAS .comm command.])
4282 # Used for DWARF 2 in PE
4283 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4284 gcc_cv_as_ix86_pe_secrel32,
4290 [if test x$gcc_cv_ld != x \
4291 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4292 gcc_cv_as_ix86_pe_secrel32=yes
4295 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4296 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4297 # Test if the assembler supports the extended form of the .section
4298 # directive that specifies section alignment. LTO support uses this,
4299 # but normally only after installation, so we warn but don't fail the
4300 # configure if LTO is enabled but the assembler does not support it.
4301 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4302 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4303 if test x$gcc_cv_as_section_has_align != xyes; then
4304 case ",$enable_languages," in
4306 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4313 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4314 [-xbrace_comment=no], [.text],,
4315 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4316 [Define if your assembler supports -xbrace_comment option.])])
4318 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4319 gcc_cv_as_ix86_filds,,,
4320 [filds (%ebp); fists (%ebp)],,
4321 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4322 [Define if your assembler uses filds and fists mnemonics.])])
4324 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4325 gcc_cv_as_ix86_fildq,,,
4326 [fildq (%ebp); fistpq (%ebp)],,
4327 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4328 [Define if your assembler uses fildq and fistq mnemonics.])])
4330 gcc_GAS_CHECK_FEATURE([cmov syntax],
4331 gcc_cv_as_ix86_cmov_sun_syntax,,,
4332 [cmovl.l %edx, %eax],,
4333 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4334 [Define if your assembler supports the Sun syntax for cmov.])])
4336 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4337 gcc_cv_as_ix86_ffreep,,,
4339 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4340 [Define if your assembler supports the ffreep mnemonic.])])
4342 gcc_GAS_CHECK_FEATURE([.quad directive],
4343 gcc_cv_as_ix86_quad,,,
4345 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4346 [Define if your assembler supports the .quad directive.])])
4348 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4349 gcc_cv_as_ix86_sahf,,,
4352 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4353 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4355 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4356 gcc_cv_as_ix86_interunit_movq,,,
4360 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4361 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4362 [Define if your assembler supports interunit movq mnemonic.])
4364 gcc_GAS_CHECK_FEATURE([hle prefixes],
4365 gcc_cv_as_ix86_hle,,,
4366 [lock xacquire cmpxchg %esi, (%ecx)],,
4367 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4368 [Define if your assembler supports HLE prefixes.])])
4370 gcc_GAS_CHECK_FEATURE([swap suffix],
4371 gcc_cv_as_ix86_swap,,,
4372 [movl.s %esp, %ebp],,
4373 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4374 [Define if your assembler supports the swap suffix.])])
4376 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4377 gcc_cv_as_ix86_diff_sect_delta,,,
4385 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4386 [Define if your assembler supports the subtraction of symbols in different sections.])])
4388 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4389 gcc_cv_as_ix86_rep_lock_prefix,,,
4395 lock addl %edi, (%eax,%esi)
4396 lock orl $0, (%esp)],,
4397 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4398 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4400 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4401 gcc_cv_as_ix86_ud2,,,
4403 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4404 [Define if your assembler supports the 'ud2' mnemonic.])])
4406 # Enforce 32-bit output with gas and gld.
4407 if test x$gas = xyes; then
4408 as_ix86_gas_32_opt="--32"
4410 if echo "$ld_ver" | grep GNU > /dev/null; then
4411 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4412 ld_ix86_gld_32_opt="-melf_i386_sol2"
4414 ld_ix86_gld_32_opt="-melf_i386"
4418 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4419 gcc_cv_as_ix86_tlsgdplt,,
4420 [$as_ix86_gas_32_opt],
4421 [call tls_gd@tlsgdplt],
4422 [if test x$gcc_cv_ld != x \
4423 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4424 gcc_cv_as_ix86_tlsgdplt=yes
4427 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4428 [Define if your assembler and linker support @tlsgdplt.])])
4431 .section .tdata,"aw'$tls_section_flag'",@progbits
4433 .section .text,"ax",@progbits
4434 call tls_ld@tlsldmplt'
4436 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4437 gcc_cv_as_ix86_tlsldmplt,,
4438 [$as_ix86_gas_32_opt],
4440 [if test x$gcc_cv_ld != x \
4441 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4442 gcc_cv_as_ix86_tlsldmplt=yes
4445 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4446 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4447 [Define to 1 if your assembler and linker support @tlsldmplt.])
4450 .section .text,"ax",@progbits
4452 .type _start, @function
4454 leal value@tlsldm(%ebx), %eax
4455 call ___tls_get_addr@plt
4457 .section .tdata,"aw'$tls_section_flag'",@progbits
4458 .type value, @object
4460 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4461 gcc_cv_as_ix86_tlsldm,,
4462 [$as_ix86_gas_32_opt],
4464 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4465 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4466 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4467 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4468 gcc_cv_as_ix86_tlsldm=yes
4472 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4473 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4474 [Define to 1 if your assembler and linker support @tlsldm.])
4485 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4486 gcc_cv_as_ix86_got32x,,
4487 [$as_ix86_gas_32_opt],
4489 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4490 && test x$gcc_cv_readelf != x \
4491 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4492 | grep R_386_GOT32X > /dev/null 2>&1 \
4493 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4494 if $gcc_cv_objdump -dw conftest 2>&1 \
4495 | grep 0xffffff > /dev/null 2>&1; then
4496 gcc_cv_as_ix86_got32x=no
4498 gcc_cv_as_ix86_got32x=yes
4502 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4503 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4504 [Define 0/1 if your assembler and linker support @GOT.])
4506 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4507 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4508 [$as_ix86_gas_32_opt],
4514 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4515 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4516 [Define true if the assembler supports '.long foo@GOTOFF'.])
4519 .section .text,"ax",@progbits
4521 .type _start, @function
4523 leal ld@tlsldm(%ecx), %eax
4524 call *___tls_get_addr@GOT(%ecx)
4525 leal gd@tlsgd(%ecx), %eax
4526 call *___tls_get_addr@GOT(%ecx)
4528 .section .tdata,"aw'$tls_section_flag'",@progbits
4536 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4537 gcc_cv_as_ix86_tls_get_addr_via_got,,
4538 [$as_ix86_gas_32_opt],
4540 [if test x$gcc_cv_ld != x \
4541 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4542 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4545 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4546 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4547 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4551 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4552 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4554 addl r15 = @ltoffx(x#), gp
4556 ld8.mov r16 = [[r15]], x#],,
4557 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4558 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4566 gcc_GAS_CHECK_FEATURE([.machine directive support],
4567 gcc_cv_as_machine_directive,,,
4568 [ .machine ppc7400])
4569 if test x$gcc_cv_as_machine_directive != xyes; then
4570 echo "*** This target requires an assembler supporting \".machine\"" >&2
4571 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4572 test x$build = x$target && exit 1
4578 *-*-aix*) conftest_s=' .machine "pwr5"
4581 *-*-darwin*) conftest_s=' .text
4583 *) conftest_s=' .machine power4
4588 gcc_GAS_CHECK_FEATURE([mfcr field support],
4589 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4591 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4592 [Define if your assembler supports mfcr field.])])
4595 *-*-aix*) conftest_s=' .csect .text[[PR]]
4597 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4601 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4602 *) conftest_s=' .text
4604 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4607 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4608 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4610 [AC_DEFINE(HAVE_AS_REL16, 1,
4611 [Define if your assembler supports R_PPC_REL16 relocs.])])
4614 *-*-aix*) conftest_s=' .machine "pwr7"
4617 *) conftest_s=' .machine power7
4622 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4623 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4625 [AC_DEFINE(HAVE_AS_VSX, 1,
4626 [Define if your assembler supports VSX instructions.])])
4628 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4629 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4630 [.gnu_attribute 4,1],,
4631 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4632 [Define if your assembler supports .gnu_attribute.])])
4634 gcc_GAS_CHECK_FEATURE([tls marker support],
4635 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4636 [ bl __tls_get_addr(x@tlsgd)],,
4637 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4638 [Define if your assembler supports arg info for __tls_get_addr.])])
4640 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4641 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4642 [ .reloc .,R_PPC64_ENTRY; nop],,
4643 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4644 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4648 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4649 gcc_cv_as_aix_ref, [2,21,0],,
4650 [ .csect stuff[[rw]]
4656 [AC_DEFINE(HAVE_AS_REF, 1,
4657 [Define if your assembler supports .ref])])
4659 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4660 gcc_cv_as_aix_dwloc, [2,21,0],,
4665 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4666 [Define if your assembler supports AIX debug frame section label reference.])])
4672 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4673 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4674 [ lw $4,%gp_rel(foo)($4)],,
4675 [if test x$target_cpu_default = x
4676 then target_cpu_default=MASK_EXPLICIT_RELOCS
4677 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4680 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4681 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4682 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4683 [Define if the assembler understands -mno-shared.])])
4685 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4686 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4687 [.gnu_attribute 4,1],,
4688 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4689 [Define if your assembler supports .gnu_attribute.])])
4691 gcc_GAS_CHECK_FEATURE([.module support],
4692 gcc_cv_as_mips_dot_module,,[-32],
4695 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4696 [Define if your assembler supports .module.])])
4697 if test x$gcc_cv_as_mips_dot_module = xno \
4698 && test x$with_fp_32 != x; then
4700 [Requesting --with-fp-32= requires assembler support for .module.])
4703 gcc_GAS_CHECK_FEATURE([.micromips support],
4704 gcc_cv_as_micromips_support,,[--fatal-warnings],
4706 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4707 [Define if your assembler supports the .set micromips directive])])
4709 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4710 gcc_cv_as_mips_dtprelword, [2,18,0],,
4711 [.section .tdata,"awT",@progbits
4715 .dtprelword x+0x8000],,
4716 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4717 [Define if your assembler supports .dtprelword.])])
4719 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4720 gcc_cv_as_mips_dspr1_mult,,,
4730 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4731 [Define if your assembler supports DSPR1 mult.])])
4733 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4734 gcc_cv_as_ld_jalr_reloc=no
4735 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4736 if test $in_tree_ld = yes ; then
4737 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4738 && test $in_tree_ld_is_elf = yes; then
4739 gcc_cv_as_ld_jalr_reloc=yes
4741 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4742 echo ' .ent x' > conftest.s
4743 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4744 echo ' lw $25,%call16(y)($28)' >> conftest.s
4745 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4746 echo '1: jalr $25' >> conftest.s
4747 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4748 echo '1: jalr $25' >> conftest.s
4749 echo ' .end x' >> conftest.s
4750 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4751 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4752 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4753 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4754 gcc_cv_as_ld_jalr_reloc=yes
4760 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4761 if test x$target_cpu_default = x; then
4762 target_cpu_default=MASK_RELAX_PIC_CALLS
4764 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4767 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4769 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4770 [gcc_cv_ld_mips_personality_relaxation],
4771 [gcc_cv_ld_mips_personality_relaxation=no
4772 if test $in_tree_ld = yes ; then
4773 if test "$gcc_cv_gld_major_version" -eq 2 \
4774 -a "$gcc_cv_gld_minor_version" -ge 21 \
4775 -o "$gcc_cv_gld_major_version" -gt 2; then
4776 gcc_cv_ld_mips_personality_relaxation=yes
4778 elif test x$gcc_cv_as != x \
4779 -a x$gcc_cv_ld != x \
4780 -a x$gcc_cv_readelf != x ; then
4781 cat > conftest.s <<EOF
4783 .cfi_personality 0x80,indirect_ptr
4790 .section .data,"aw",@progbits
4794 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4795 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4796 if $gcc_cv_readelf -d conftest 2>&1 \
4797 | grep TEXTREL > /dev/null 2>&1; then
4799 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4800 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4803 gcc_cv_ld_mips_personality_relaxation=yes
4807 rm -f conftest.s conftest.o conftest])
4808 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4809 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4810 [Define if your linker can relax absolute .eh_frame personality
4811 pointers into PC-relative form.])
4814 gcc_GAS_CHECK_FEATURE([-mnan= support],
4815 gcc_cv_as_mips_nan,,
4817 [AC_DEFINE(HAVE_AS_NAN, 1,
4818 [Define if the assembler understands -mnan=.])])
4819 if test x$gcc_cv_as_mips_nan = xno \
4820 && test x$with_nan != x; then
4822 [Requesting --with-nan= requires assembler support for -mnan=])
4826 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4827 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4828 [.gnu_attribute 8,1],,
4829 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4830 [Define if your assembler supports .gnu_attribute.])])
4831 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4832 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4837 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4838 [Define if your assembler supports .machine and .machinemode.])])
4839 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4840 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4841 [ .machine z13+vx ],,
4842 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4843 [Define if your assembler supports architecture modifiers.])])
4847 # Mips and HP-UX need the GNU assembler.
4848 # Linux on IA64 might be able to use the Intel assembler.
4851 mips*-*-* | *-*-hpux* )
4852 if test x$gas_flag = xyes \
4853 || test x"$host" != x"$build" \
4854 || test ! -x "$gcc_cv_as" \
4855 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4858 echo "*** This configuration requires the GNU assembler" >&2
4864 # ??? Not all targets support dwarf2 debug_line, even within a version
4865 # of gas. Moreover, we need to emit a valid instruction to trigger any
4866 # info to the output file. So, as supported targets are added to gas 2.11,
4867 # add some instruction here to (also) show we expect this might work.
4868 # ??? Once 2.11 is released, probably need to add first known working
4869 # version to the per-target configury.
4871 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4872 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4873 | tilegx | tilepro | visium | xstormy16 | xtensa)
4883 if test x"$insn" != x; then
4885 .file 1 \"conftest.s\"
4888 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4889 gcc_cv_as_dwarf2_debug_line,
4890 [elf,2,11,0],, [$conftest_s],
4891 [if test x$gcc_cv_objdump != x \
4892 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4893 | grep debug_line > /dev/null 2>&1; then
4894 gcc_cv_as_dwarf2_debug_line=yes
4897 # The .debug_line file table must be in the exact order that
4898 # we specified the files, since these indices are also used
4899 # by DW_AT_decl_file. Approximate this test by testing if
4900 # the assembler bitches if the same index is assigned twice.
4901 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4902 gcc_cv_as_dwarf2_file_buggy,,,
4906 if test $gcc_cv_as_dwarf2_debug_line = yes \
4907 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4908 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4909 [Define if your assembler supports dwarf2 .file/.loc directives,
4910 and preserves file table indices exactly as given.])
4912 if test $gcc_cv_as_leb128 = yes; then
4914 .file 1 \"conftest.s\"
4915 .loc 1 3 0 view .LVU1
4921 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4922 gcc_cv_as_dwarf2_debug_view,
4923 [elf,2,27,0],,[$conftest_s],,
4924 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4925 [Define if your assembler supports views in dwarf2 .loc directives.])])
4929 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4930 gcc_cv_as_gdwarf2_flag,
4931 [elf,2,11,0], [--gdwarf2], [$insn],,
4932 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4933 [Define if your assembler supports the --gdwarf2 option.])])
4935 gcc_GAS_CHECK_FEATURE([--gstabs option],
4936 gcc_cv_as_gstabs_flag,
4937 [elf,2,11,0], [--gstabs], [$insn],,
4938 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4939 [Define if your assembler supports the --gstabs option.])])
4941 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4942 gcc_cv_as_debug_prefix_map_flag,
4943 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4944 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4945 [Define if your assembler supports the --debug-prefix-map option.])])
4948 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4949 gcc_cv_as_compress_debug,,,,
4950 [# gas compiled without zlib cannot compress debug sections and warns
4951 # about it, but still exits successfully. So check for this, too.
4952 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4954 gcc_cv_as_compress_debug=0
4955 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4956 # defaulting to the ELF gABI format.
4957 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4959 gcc_cv_as_compress_debug=2
4960 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4961 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4962 # Before binutils 2.26, gas only supported --compress-debug-options and
4963 # emitted the traditional GNU format.
4964 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4966 gcc_cv_as_compress_debug=1
4967 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4968 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4970 gcc_cv_as_compress_debug=0
4972 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4973 [Define to the level of your assembler's compressed debug section support.])
4974 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4975 [Define to the assembler option to enable compressed debug sections.])
4976 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4977 [Define to the assembler option to disable compressed debug sections.])
4979 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4982 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4983 [Define if your assembler supports .lcomm with an alignment field.])])
4985 if test x$with_sysroot = x && test x$host = x$target \
4986 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4987 && test "$prefix" != "NONE"; then
4988 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4989 [Define to PREFIX/include if cpp should also search that directory.])
4992 # Determine the version of glibc, if any, used on the target.
4993 AC_MSG_CHECKING([for target glibc version])
4994 AC_ARG_WITH([glibc-version],
4995 [AS_HELP_STRING([--with-glibc-version=M.N],
4996 [assume GCC used with glibc version M.N or later])], [
4997 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4998 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4999 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5001 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5003 glibc_version_major=0
5004 glibc_version_minor=0
5005 [if test -f $target_header_dir/features.h \
5006 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5007 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5008 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5009 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5011 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5012 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5013 [GNU C Library major version number used on the target, or 0.])
5014 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5015 [GNU C Library minor version number used on the target, or 0.])
5017 AC_ARG_ENABLE(gnu-unique-object,
5018 [AS_HELP_STRING([--enable-gnu-unique-object],
5019 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5020 [case $enable_gnu_unique_object in
5022 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5023 Valid choices are 'yes' and 'no'.]) ;;
5025 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5027 [.type foo, '$target_type_format_char'gnu_unique_object],,
5028 # We need to unquote above to to use the definition from config.gcc.
5029 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5030 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5032 if test x$enable_gnu_unique_object = xyes; then
5033 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5034 [Define if your assembler supports @gnu_unique_object.])
5037 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5038 [gcc_cv_as_line_zero],
5039 [gcc_cv_as_line_zero=no
5040 if test $in_tree_gas = yes; then
5041 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5042 elif test "x$gcc_cv_as" != x; then
5043 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5044 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5045 test "x`cat conftest.out`" = x
5047 gcc_cv_as_line_zero=yes
5049 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5050 cat conftest.s >&AS_MESSAGE_LOG_FD
5051 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5052 cat conftest.out >&AS_MESSAGE_LOG_FD
5054 rm -f conftest.o conftest.s conftest.out
5056 if test "x$gcc_cv_as_line_zero" = xyes; then
5057 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5058 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5061 AC_MSG_CHECKING(support for thin archives)
5062 thin_archive_support=no
5063 echo 'int main (void) { return 0; }' > conftest.c
5064 if ($AR --version | sed 1q | grep "GNU ar" \
5065 && $CC $CFLAGS -c conftest.c \
5066 && $AR rcT conftest.a conftest.o \
5067 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5068 thin_archive_support=yes
5070 rm -f conftest.c conftest.o conftest.a conftest
5071 AC_MSG_RESULT($thin_archive_support)
5072 AC_SUBST(thin_archive_support)
5074 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5075 gcc_cv_ld_eh_frame_hdr=no
5076 if test $in_tree_ld = yes ; then
5077 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5078 && test $in_tree_ld_is_elf = yes; then
5079 gcc_cv_ld_eh_frame_hdr=yes
5081 elif test x$gcc_cv_ld != x; then
5082 if echo "$ld_ver" | grep GNU > /dev/null; then
5083 # Check if linker supports --eh-frame-hdr option
5084 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5085 gcc_cv_ld_eh_frame_hdr=yes
5090 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5091 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5092 gcc_cv_ld_eh_frame_hdr=yes
5098 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5099 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5100 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5101 [Define if your linker supports .eh_frame_hdr.])
5103 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5105 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5106 gcc_cv_ld_eh_frame_ciev3=no
5107 if test $in_tree_ld = yes ; then
5108 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5109 && test $in_tree_ld_is_elf = yes; then
5110 gcc_cv_ld_eh_frame_ciev3=yes
5112 elif test x$gcc_cv_ld != x; then
5113 if echo "$ld_ver" | grep GNU > /dev/null; then
5114 gcc_cv_ld_eh_frame_ciev3=yes
5115 if test 0"$ld_date" -lt 20040513; then
5116 if test -n "$ld_date"; then
5117 # If there was date string, but was earlier than 2004-05-13, fail
5118 gcc_cv_ld_eh_frame_ciev3=no
5119 elif test "$ld_vers_major" -lt 2; then
5120 gcc_cv_ld_eh_frame_ciev3=no
5121 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5122 gcc_cv_ld_eh_frame_ciev3=no
5128 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5129 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5130 gcc_cv_ld_eh_frame_ciev3=yes
5136 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5137 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5138 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5139 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5141 AC_MSG_CHECKING(linker position independent executable support)
5143 if test $in_tree_ld = yes ; then
5145 # Full PIE support on Solaris was only introduced in gld 2.26.
5146 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5147 *) gcc_gld_pie_min_version=15 ;;
5149 if test "$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 \
5150 && test $in_tree_ld_is_elf = yes; then
5153 elif test x$gcc_cv_ld != x; then
5154 # Check if linker supports -pie option
5155 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5159 if echo "$ld_ver" | grep GNU > /dev/null \
5160 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5167 *-*-solaris2.1[[1-9]]*)
5168 # Solaris 11.3 added PIE support.
5169 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5176 if test x"$gcc_cv_ld_pie" = xyes; then
5177 AC_DEFINE(HAVE_LD_PIE, 1,
5178 [Define if your linker supports PIE option.])
5180 AC_MSG_RESULT($gcc_cv_ld_pie)
5182 AC_MSG_CHECKING(linker PIE support with copy reloc)
5183 gcc_cv_ld_pie_copyreloc=no
5184 if test $gcc_cv_ld_pie = yes ; then
5185 if test $in_tree_ld = yes ; then
5186 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5187 gcc_cv_ld_pie_copyreloc=yes
5189 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5190 # Check if linker supports -pie option with copy reloc
5192 i?86-*-linux* | x86_64-*-linux*)
5193 cat > conftest1.s <<EOF
5196 .type a_glob, @object
5201 cat > conftest2.s <<EOF
5204 .type main, @function
5206 movl %eax, a_glob(%rip)
5209 .section .data.rel,"aw",@progbits
5214 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5215 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5216 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5217 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5218 gcc_cv_ld_pie_copyreloc=yes
5220 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5225 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5226 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5227 [Define 0/1 if your linker supports -pie option with copy reloc.])
5228 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5230 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5231 gcc_cv_ld_eh_gc_sections=no
5232 if test $in_tree_ld = yes ; then
5233 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5234 && test $in_tree_ld_is_elf = yes; then
5235 gcc_cv_ld_eh_gc_sections=yes
5237 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5238 cat > conftest.s <<EOF
5241 .type _start, @function
5244 .size _start, .-_start
5245 .section .text.foo,"ax",@progbits
5246 .type foo, @function
5250 .section .gcc_except_table.foo,"a",@progbits
5253 .section .eh_frame,"a",@progbits
5256 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5257 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5258 | grep "gc-sections option ignored" > /dev/null; then
5259 gcc_cv_ld_eh_gc_sections=no
5260 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5261 | grep gcc_except_table > /dev/null; then
5262 gcc_cv_ld_eh_gc_sections=yes
5263 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5264 if test x$gcc_cv_as_comdat_group != xyes; then
5265 gcc_cv_ld_eh_gc_sections=no
5266 cat > conftest.s <<EOF
5269 .type _start, @function
5272 .size _start, .-_start
5273 .section .gnu.linkonce.t.foo,"ax",@progbits
5274 .type foo, @function
5278 .section .gcc_except_table.foo,"a",@progbits
5281 .section .eh_frame,"a",@progbits
5284 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5285 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5286 | grep "gc-sections option ignored" > /dev/null; then
5287 gcc_cv_ld_eh_gc_sections=no
5288 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5289 | grep gcc_except_table > /dev/null; then
5290 gcc_cv_ld_eh_gc_sections=yes
5296 rm -f conftest.s conftest.o conftest
5300 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5301 gcc_cv_ld_eh_gc_sections=no
5304 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5305 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5306 [Define if your linker supports garbage collection of
5307 sections in presence of EH frames.])
5309 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5311 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5312 gcc_cv_ld_eh_gc_sections_bug=no
5313 if test $in_tree_ld = yes ; then
5314 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5315 && test $in_tree_ld_is_elf = yes; then
5316 gcc_cv_ld_eh_gc_sections_bug=yes
5318 elif test x$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
5319 gcc_cv_ld_eh_gc_sections_bug=yes
5320 cat > conftest.s <<EOF
5323 .type _start, @function
5326 .size _start, .-_start
5327 .section .text.startup.foo,"ax",@progbits
5328 .type foo, @function
5332 .section .gcc_except_table.foo,"a",@progbits
5335 .section .eh_frame,"a",@progbits
5338 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5339 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5340 | grep "gc-sections option ignored" > /dev/null; then
5342 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5343 | grep gcc_except_table > /dev/null; then
5344 gcc_cv_ld_eh_gc_sections_bug=no
5347 rm -f conftest.s conftest.o conftest
5349 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5350 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5351 [Define if your linker has buggy garbage collection of
5352 sections support when .text.startup.foo like sections are used.])
5354 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5356 AC_MSG_CHECKING(linker for compressed debug sections)
5357 # gold/gld support compressed debug sections since binutils 2.19/2.21
5358 # In binutils 2.26, gld gained support for the ELF gABI format.
5359 if test $in_tree_ld = yes ; then
5360 gcc_cv_ld_compress_debug=0
5361 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5362 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5363 gcc_cv_ld_compress_debug=2
5364 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5365 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5366 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5367 gcc_cv_ld_compress_debug=3
5368 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5369 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5370 && test $in_tree_ld_is_elf = yes; then
5371 gcc_cv_ld_compress_debug=1
5373 elif echo "$ld_ver" | grep GNU > /dev/null; then
5374 if test "$ld_vers_major" -lt 2 \
5375 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5376 gcc_cv_ld_compress_debug=0
5377 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5378 gcc_cv_ld_compress_debug=1
5380 gcc_cv_ld_compress_debug=3
5381 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5383 if test $ld_is_gold = yes; then
5384 gcc_cv_ld_compress_debug=2
5385 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5391 # Introduced in Solaris 11.2.
5392 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5393 gcc_cv_ld_compress_debug=3
5394 gcc_cv_ld_compress_debug_option="-z compress-sections"
5396 gcc_cv_ld_compress_debug=0
5400 # Assume linkers other than GNU ld don't support compessed debug
5402 gcc_cv_ld_compress_debug=0
5407 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5408 [Define to the level of your linker's compressed debug section support.])
5409 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5410 [Define to the linker option to enable compressed debug sections.])
5411 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5413 if test x"$ld64_flag" = x"yes"; then
5415 # Set defaults for possibly untestable items.
5416 gcc_cv_ld64_export_dynamic=0
5418 if test "$build" = "$host"; then
5424 # On Darwin, because of FAT library support, it is often possible to execute
5425 # exes from compatible archs even when the host differs from the build system.
5426 case "$build","$host" in
5427 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5432 # If the configurer specified a minimum ld64 version to be supported, then use
5433 # that to determine feature support.
5434 if test x"${gcc_cv_ld64_version}" != x; then
5435 AC_MSG_CHECKING(ld64 specified version)
5436 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5437 AC_MSG_RESULT($gcc_cv_ld64_major)
5438 if test "$gcc_cv_ld64_major" -ge 236; then
5439 gcc_cv_ld64_export_dynamic=1
5441 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5442 # If the version was not specified, try to find it.
5443 AC_MSG_CHECKING(linker version)
5444 if test x"${gcc_cv_ld64_version}" = x; then
5445 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5447 AC_MSG_RESULT($gcc_cv_ld64_version)
5449 AC_MSG_CHECKING(linker for -export_dynamic support)
5450 gcc_cv_ld64_export_dynamic=1
5451 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5452 gcc_cv_ld64_export_dynamic=0
5454 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5457 if test x"${gcc_cv_ld64_version}" != x; then
5458 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5459 [Define to ld64 version.])
5462 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5463 [Define to 1 if ld64 supports '-export_dynamic'.])
5470 AC_CACHE_CHECK(linker --as-needed support,
5471 gcc_cv_ld_as_needed,
5472 [gcc_cv_ld_as_needed=no
5473 gcc_cv_ld_as_needed_option='--as-needed'
5474 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5475 if test $in_tree_ld = yes ; then
5476 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5477 && test $in_tree_ld_is_elf = yes; then
5478 gcc_cv_ld_as_needed=yes
5479 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5480 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5481 gcc_cv_ld_no_as_needed_option='--pop-state'
5484 elif test x$gcc_cv_ld != x; then
5485 # Check if linker supports --as-needed and --no-as-needed options
5486 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5487 gcc_cv_ld_as_needed=yes
5488 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5489 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5490 && echo "$ld_ver" | grep GNU > /dev/null \
5491 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5492 # Use these options only when both ld.bfd and ld.gold support
5493 # --push-state/--pop-state, which unfortunately wasn't added
5495 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5496 gcc_cv_ld_no_as_needed_option='--pop-state'
5499 case "$target:$gnu_ld" in
5501 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5503 gcc_cv_ld_as_needed=yes
5504 gcc_cv_ld_as_needed_option="-z ignore"
5505 gcc_cv_ld_no_as_needed_option="-z record"
5509 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5510 # dl_iterate_phdr, i.e. since Solaris 11.
5512 *-*-solaris2.1[[1-9]]*)
5514 i?86-*-* | x86_64-*-*)
5515 if echo "$ld_ver" | grep GNU > /dev/null; then
5516 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5517 gcc_cv_ld_as_needed=no
5523 gcc_cv_ld_as_needed=no
5527 if test x"$gcc_cv_ld_as_needed" = xyes; then
5528 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5529 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5530 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5531 [Define to the linker option to ignore unused dependencies.])
5532 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5533 [Define to the linker option to keep unused dependencies.])
5536 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5537 saved_LDFLAGS="$LDFLAGS"
5538 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5539 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5540 AC_LINK_IFELSE([int main(void) {return 0;}],
5541 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5543 LDFLAGS="$saved_LDFLAGS"
5544 if test "x$gcc_cv_ld_clearcap" = xyes; then
5545 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5546 [Define if the linker supports clearing hardware capabilities via mapfile.])
5547 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5549 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5555 emul_name="-melf32lppc"
5558 emul_name="-melf32ppc"
5561 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5563 [gcc_cv_ld_ppc_attr=no
5564 if test x"$ld_is_gold" = xyes; then
5565 gcc_cv_ld_ppc_attr=yes
5566 elif test $in_tree_ld = yes ; then
5567 if test "$gcc_cv_gld_major_version" -eq 2 \
5568 -a "$gcc_cv_gld_minor_version" -ge 28 \
5569 -o "$gcc_cv_gld_major_version" -gt 2; then
5570 gcc_cv_ld_ppc_attr=yes
5572 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5573 # check that merging the long double .gnu_attribute doesn't warn
5574 cat > conftest1.s <<EOF
5577 cat > conftest2.s <<EOF
5580 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5581 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5582 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5583 && test ! -s conftest.err; then
5584 gcc_cv_ld_ppc_attr=yes
5586 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5589 if test x$gcc_cv_ld_ppc_attr = xyes; then
5590 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5591 [Define if your PowerPC linker has .gnu.attributes long double support.])
5596 case "$target:$tm_file" in
5597 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5600 emul_name="-melf64lppc"
5603 emul_name="-melf64ppc"
5606 emul_name="-melf64ppc_fbsd"
5609 AC_CACHE_CHECK(linker support for omitting dot symbols,
5610 gcc_cv_ld_no_dot_syms,
5611 [gcc_cv_ld_no_dot_syms=no
5612 if test x"$ld_is_gold" = xyes; then
5613 gcc_cv_ld_no_dot_syms=yes
5614 elif test $in_tree_ld = yes ; then
5615 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5616 gcc_cv_ld_no_dot_syms=yes
5618 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5619 cat > conftest1.s <<EOF
5623 cat > conftest2.s <<EOF
5624 .section ".opd","aw"
5629 .quad .LEfoo,.TOC.@tocbase,0
5635 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5636 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5637 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5638 gcc_cv_ld_no_dot_syms=yes
5640 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5643 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5644 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5645 [Define if your PowerPC64 linker only needs function descriptor syms.])
5648 AC_CACHE_CHECK(linker large toc support,
5649 gcc_cv_ld_large_toc,
5650 [gcc_cv_ld_large_toc=no
5651 if test x"$ld_is_gold" = xyes; then
5652 gcc_cv_ld_large_toc=yes
5653 elif test $in_tree_ld = yes ; then
5654 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5655 gcc_cv_ld_large_toc=yes
5657 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5658 cat > conftest.s <<EOF
5659 .section ".tbss","awT",@nobits
5665 addis 9,13,ie0@got@tprel@ha
5666 ld 9,ie0@got@tprel@l(9)
5668 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5669 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5670 gcc_cv_ld_large_toc=yes
5672 rm -f conftest conftest.o conftest.s
5675 if test x"$gcc_cv_ld_large_toc" = xyes; then
5676 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5677 [Define if your PowerPC64 linker supports a large TOC.])
5680 AC_CACHE_CHECK(linker toc pointer alignment,
5681 gcc_cv_ld_toc_align,
5682 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5683 cat > conftest.s <<EOF
5688 .section .data.rel.ro,"aw",@progbits
5693 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5694 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5695 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5697 rm -f conftest conftest.o conftest.s
5700 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5701 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5702 [Define to .TOC. alignment forced by your linker.])
5709 AC_CACHE_CHECK(linker large toc support,
5710 gcc_cv_ld_large_toc,
5711 [gcc_cv_ld_large_toc=no
5712 if test x$gcc_cv_as != x ; then
5713 cat > conftest.s <<EOF
5723 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5724 gcc_cv_ld_large_toc=yes
5726 rm -f conftest conftest.o conftest.s
5729 if test x"$gcc_cv_ld_large_toc" = xyes; then
5730 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5731 [Define if your PowerPC64 linker supports a large TOC.])
5736 AC_CACHE_CHECK(linker --build-id support,
5738 [gcc_cv_ld_buildid=no
5739 if test $in_tree_ld = yes ; then
5740 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5741 "$gcc_cv_gld_minor_version" -ge 18 -o \
5742 "$gcc_cv_gld_major_version" -gt 2 \
5743 && test $in_tree_ld_is_elf = yes; then
5744 gcc_cv_ld_buildid=yes
5746 elif test x$gcc_cv_ld != x; then
5747 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5748 gcc_cv_ld_buildid=yes
5751 if test x"$gcc_cv_ld_buildid" = xyes; then
5752 AC_DEFINE(HAVE_LD_BUILDID, 1,
5753 [Define if your linker supports --build-id.])
5756 AC_ARG_ENABLE(linker-build-id,
5757 [AS_HELP_STRING([--enable-linker-build-id],
5758 [compiler will always pass --build-id to linker])],
5760 enable_linker_build_id=no)
5762 if test x"$enable_linker_build_id" = xyes; then
5763 if test x"$gcc_cv_ld_buildid" = xyes; then
5764 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5765 [Define if gcc should always pass --build-id to linker.])
5767 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5771 # In binutils 2.21, GNU ld gained support for new emulations fully
5772 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5773 AC_CACHE_CHECK(linker *_sol2 emulation support,
5774 gcc_cv_ld_sol2_emulation,
5775 [gcc_cv_ld_sol2_emulation=no
5776 if test $in_tree_ld = yes ; then
5777 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5778 "$gcc_cv_gld_minor_version" -ge 21 -o \
5779 "$gcc_cv_gld_major_version" -gt 2 \
5780 && test $in_tree_ld_is_elf = yes; then
5781 gcc_cv_ld_sol2_emulation=yes
5783 elif test x$gcc_cv_ld != x; then
5784 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5785 grep _sol2 > /dev/null; then
5786 gcc_cv_ld_sol2_emulation=yes
5789 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5790 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5791 [Define if your linker supports the *_sol2 emulations.])
5794 AC_CACHE_CHECK(linker --sysroot support,
5796 [gcc_cv_ld_sysroot=no
5797 if test $in_tree_ld = yes ; then
5798 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5799 gcc_cv_ld_sysroot=yes
5801 elif test x$gcc_cv_ld != x; then
5802 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5803 gcc_cv_ld_sysroot=yes
5806 if test x"$gcc_cv_ld_sysroot" = xyes; then
5807 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5808 [Define if your linker supports --sysroot.])
5813 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5814 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5815 gcc_cv_solaris_crts,
5816 [gcc_cv_solaris_crts=no
5817 if test x$host != x$target; then
5818 if test "x$with_sysroot" = xyes; then
5819 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5821 target_sysroot="${with_sysroot}"
5824 target_libdir="$target_sysroot/usr/lib"
5825 # At the time they were added, gcrt1.o became a symlink for backwards
5826 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5828 i?86-*-solaris2* | x86_64-*-solaris2*)
5829 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5832 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5837 if test x$gcc_cv_solaris_crts = xyes; then
5838 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5839 [Define if the system-provided CRTs are present on Solaris.])
5842 AC_ARG_ENABLE(libssp,
5843 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5844 [case "${enableval}" in
5848 AC_MSG_ERROR([unknown libssp setting $enableval])
5852 # Test for stack protector support in target C library.
5853 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5854 gcc_cv_libc_provides_ssp,
5855 [gcc_cv_libc_provides_ssp=no
5856 if test "x$enable_libssp" = "xno"; then
5857 gcc_cv_libc_provides_ssp=yes
5858 elif test "x$enable_libssp" = "xyes"; then
5859 gcc_cv_libc_provides_ssp=no
5863 # All versions of musl provide stack protector
5864 gcc_cv_libc_provides_ssp=yes;;
5865 *-*-linux* | *-*-kfreebsd*-gnu)
5866 # glibc 2.4 and later provides __stack_chk_fail and
5867 # either __stack_chk_guard, or TLS access to stack guard canary.
5868 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5869 [if test -f $target_header_dir/features.h \
5870 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5871 $target_header_dir/features.h > /dev/null; then
5872 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5873 $target_header_dir/features.h > /dev/null && \
5874 test -f $target_header_dir/bits/uClibc_config.h && \
5875 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5876 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5877 gcc_cv_libc_provides_ssp=yes
5879 # all versions of Bionic support stack protector
5880 elif test -f $target_header_dir/sys/cdefs.h \
5881 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5882 $target_header_dir/sys/cdefs.h > /dev/null; then
5883 gcc_cv_libc_provides_ssp=yes
5887 # Avoid complicated tests (see
5888 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5889 # simply assert that glibc does provide this, which is true for all
5890 # realistically usable GNU/Hurd configurations.
5891 # All supported versions of musl provide it as well
5892 gcc_cv_libc_provides_ssp=yes;;
5893 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5894 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5895 [echo "no __stack_chk_fail on this target"])
5897 *) gcc_cv_libc_provides_ssp=no ;;
5901 if test x$gcc_cv_libc_provides_ssp = xyes; then
5902 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5903 [Define if your target C library provides stack protector support])
5906 # Check whether --enable-default-ssp was given.
5907 AC_ARG_ENABLE(default-ssp,
5908 [AS_HELP_STRING([--enable-default-ssp],
5909 [enable Stack Smashing Protection as default])],[
5910 if test x$gcc_cv_libc_provides_ssp = xyes; then
5912 ia64*-*-*) enable_default_ssp=no ;;
5913 *) enable_default_ssp=$enableval ;;
5916 enable_default_ssp=no
5918 enable_default_ssp=no)
5919 if test x$enable_default_ssp = xyes ; then
5920 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5921 [Define if your target supports default stack protector and it is enabled.])
5923 AC_SUBST([enable_default_ssp])
5925 # Test for <sys/sdt.h> on the target.
5926 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5927 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5929 if test -f $target_header_dir/sys/sdt.h; then
5931 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5932 [Define if your target C library provides sys/sdt.h])
5934 AC_MSG_RESULT($have_sys_sdt_h)
5936 # Check if TFmode long double should be used by default or not.
5937 # Some glibc targets used DFmode long double, but with glibc 2.4
5938 # and later they can use TFmode.
5940 powerpc*-*-linux* | \
5944 AC_ARG_WITH(long-double-128,
5945 [AS_HELP_STRING([--with-long-double-128],
5946 [use 128-bit long double by default])],
5947 gcc_cv_target_ldbl128="$with_long_double_128",
5948 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5949 [gcc_cv_target_ldbl128=no
5950 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5951 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5952 && gcc_cv_target_ldbl128=yes
5956 if test x$gcc_cv_target_ldbl128 = xyes; then
5957 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5958 [Define if TFmode long double should be the default])
5961 # Check if TFmode long double target should use the IBM extended double or IEEE
5962 # 128-bit floating point formats if long doubles are 128-bits long. The long
5963 # double type can only be switched on powerpc64 bit Linux systems where VSX is
5964 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
5966 AC_ARG_WITH([long-double-format],
5967 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
5968 [Specify whether PowerPC long double uses IEEE or IBM format])],[
5969 case "$target:$with_long_double_format" in
5970 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
5973 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
5974 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
5976 power7 | power8 | power9 | power1*)
5980 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
5981 supported if the default cpu is power7 or newer])
5982 with_long_double_format=""
5986 xpowerpc64*-*-linux*:*)
5987 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
5988 with_long_double_format=""
5991 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
5992 on 64-bit PowerPC VSX Linux systems])
5993 with_long_double_format=""
5998 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5999 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6000 gcc_cv_libc_provides_hwcap_in_tcb=no
6003 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6006 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6007 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6008 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6011 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6012 gcc_cv_target_dl_iterate_phdr=unknown
6014 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6015 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6016 # libdl there, both complicating its use and breaking compatibility
6017 # between Solaris 10 updates.
6018 *-*-solaris2.1[[1-9]]*)
6019 # <link.h> needs both a dl_iterate_phdr declaration and support for
6020 # compilation with largefile support.
6021 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6022 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6023 gcc_cv_target_dl_iterate_phdr=yes
6025 gcc_cv_target_dl_iterate_phdr=no
6028 *-*-dragonfly* | *-*-freebsd*)
6029 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6030 gcc_cv_target_dl_iterate_phdr=yes
6032 gcc_cv_target_dl_iterate_phdr=no
6036 gcc_cv_target_dl_iterate_phdr=yes
6039 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6040 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6041 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6042 [Define if your target C library provides the `dl_iterate_phdr' function.])
6044 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6046 # We no longer support different GC mechanisms. Emit an error if
6047 # the user configures with --with-gc.
6049 [AS_HELP_STRING([--with-gc={page,zone}],
6050 [this option is not supported anymore. It used to choose
6051 the garbage collection mechanism to use with the compiler])],
6052 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6055 # Libraries to use on the host. This will normally be set by the top
6056 # level Makefile. Here we simply capture the value for our Makefile.
6057 if test -z "${HOST_LIBS+set}"; then
6062 # Use the system's zlib library.
6065 dnl Very limited version of automake's enable-maintainer-mode
6067 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6068 dnl maintainer-mode is disabled by default
6069 AC_ARG_ENABLE(maintainer-mode,
6070 [AS_HELP_STRING([--enable-maintainer-mode],
6071 [enable make rules and dependencies not useful
6072 (and sometimes confusing) to the casual installer])],
6073 maintainer_mode=$enableval,
6076 AC_MSG_RESULT($maintainer_mode)
6078 if test "$maintainer_mode" = "yes"; then
6085 dnl Whether to prevent multiple front-ends from linking at the same time
6087 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6088 AC_ARG_ENABLE(link-mutex,
6089 [AS_HELP_STRING([--enable-link-mutex],
6090 [avoid linking multiple front-ends at once to avoid thrashing
6091 on the build machine])],
6092 do_link_mutex=$enableval,
6094 AC_MSG_RESULT($do_link_mutex)
6096 if test "$do_link_mutex" = "yes"; then
6101 AC_SUBST(DO_LINK_MUTEX)
6107 # Make empty files to contain the specs and options for each language.
6108 # Then add #include lines to for a compiler that has specs and/or options.
6114 # These (without "all_") are set in each config-lang.in.
6115 # `language' must be a single word so is spelled singularly.
6118 all_outputs='Makefile'
6119 # List of language makefile fragments.
6121 # Additional files for gengtype
6122 all_gtfiles="$target_gtfiles"
6124 # These are the languages that are set in --enable-languages,
6125 # and are available in the GCC tree.
6126 all_selected_languages=
6128 # Add the language fragments.
6129 # Languages are added via two mechanisms. Some information must be
6130 # recorded in makefile variables, these are defined in config-lang.in.
6131 # We accumulate them and plug them into the main Makefile.
6132 # The other mechanism is a set of hooks for each of the main targets
6133 # like `clean', `install', etc.
6135 language_hooks="Make-hooks"
6137 for lang in ${srcdir}/*/config-lang.in
6140 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6142 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6143 if test "x$lang_alias" = x
6145 echo "$lang doesn't set \$language." 1>&2
6148 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6149 subdirs="$subdirs $subdir"
6151 # $gcc_subdir is where the gcc integration files are to be found
6152 # for a language, both for internal compiler purposes (compiler
6153 # sources implementing front-end to GCC tree converters), and for
6154 # build infrastructure purposes (Make-lang.in, etc.)
6156 # This will be <subdir> (relative to $srcdir) if a line like
6157 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6158 # is found in <langdir>/config-lang.in, and will remain <langdir>
6161 # Except for the language alias (fetched above), the regular
6162 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6163 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6164 # only this and the language alias.
6166 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6167 if [ "$gcc_subdir" = "" ]; then
6168 gcc_subdir="$subdir"
6171 case ",$enable_languages," in
6173 all_selected_languages="$all_selected_languages $lang_alias"
6174 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6175 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6187 . ${srcdir}/$gcc_subdir/config-lang.in
6188 if test "x$language" = x
6190 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6195 case ",$enable_languages," in
6198 for i in $subdir_requires; do
6199 test -f "${srcdir}/$i/config-lang.in" && continue
6207 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6208 if test -f $srcdir/$gcc_subdir/lang.opt; then
6209 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6210 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6212 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6213 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6215 all_languages="$all_languages $language"
6216 all_compilers="$all_compilers $compilers"
6217 all_outputs="$all_outputs $outputs"
6218 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6219 case ",$enable_languages," in
6221 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6223 AC_SUBST(enable_lto)
6230 for language in $all_selected_languages
6232 check_languages="$check_languages check-$language"
6236 for language in $all_selected_languages
6238 selftest_languages="$selftest_languages selftest-$language"
6241 # We link each language in with a set of hooks, reached indirectly via
6242 # lang.${target}. Only do so for selected languages.
6246 target_list="all.cross start.encap rest.encap tags \
6247 install-common install-man install-info install-pdf install-html dvi \
6248 pdf html uninstall info man srcextra srcman srcinfo \
6249 mostlyclean clean distclean maintainer-clean install-plugin"
6251 for t in $target_list
6254 for lang in $all_selected_languages
6258 echo "lang.$t: $x" >> Make-hooks
6262 # Option include files
6265 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6266 option_includes="option-includes.mk"
6267 AC_SUBST_FILE(option_includes)
6275 echo "dir ." > .gdbinit
6276 echo "dir ${srcdir}" >> .gdbinit
6277 if test x$gdb_needs_out_file_path = xyes
6279 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6281 if test "x$subdirs" != x; then
6284 echo "dir ${srcdir}/$s" >> .gdbinit
6287 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6288 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6290 # Put a breakpoint on __asan_report_error to help with debugging buffer
6293 *-fsanitize=address*)
6294 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6298 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6299 AC_SUBST(gcc_tooldir)
6302 # Find a directory in which to install a shared libgcc.
6304 AC_ARG_ENABLE(version-specific-runtime-libs,
6305 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6306 [specify that runtime libraries should be
6307 installed in a compiler-specific directory])])
6309 # Substitute configuration variables
6312 AC_SUBST(all_compilers)
6313 AC_SUBST(all_gtfiles)
6314 AC_SUBST(all_lang_makefrags)
6315 AC_SUBST(all_languages)
6316 AC_SUBST(all_selected_languages)
6317 AC_SUBST(build_exeext)
6318 AC_SUBST(build_install_headers_dir)
6319 AC_SUBST(build_xm_file_list)
6320 AC_SUBST(build_xm_include_list)
6321 AC_SUBST(build_xm_defines)
6322 AC_SUBST(build_file_translate)
6323 AC_SUBST(check_languages)
6324 AC_SUBST(selftest_languages)
6325 AC_SUBST(cpp_install_dir)
6326 AC_SUBST(xmake_file)
6327 AC_SUBST(tmake_file)
6328 AC_SUBST(TM_ENDIAN_CONFIG)
6329 AC_SUBST(TM_MULTILIB_CONFIG)
6330 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6331 AC_SUBST(extra_gcc_objs)
6332 AC_SUBST(user_headers_inc_next_pre)
6333 AC_SUBST(user_headers_inc_next_post)
6334 AC_SUBST(extra_headers_list)
6335 AC_SUBST(extra_objs)
6336 AC_SUBST(extra_programs)
6337 AC_SUBST(float_h_file)
6338 AC_SUBST(gcc_config_arguments)
6339 AC_SUBST(gcc_gxx_include_dir)
6340 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6341 AC_SUBST(host_exeext)
6342 AC_SUBST(host_xm_file_list)
6343 AC_SUBST(host_xm_include_list)
6344 AC_SUBST(host_xm_defines)
6345 AC_SUBST(out_host_hook_obj)
6347 AC_SUBST(lang_opt_files)
6348 AC_SUBST(lang_specs_files)
6349 AC_SUBST(lang_tree_files)
6350 AC_SUBST(local_prefix)
6352 AC_SUBST(objc_boehm_gc)
6354 AC_SUBST(out_object_file)
6355 AC_SUBST(common_out_file)
6356 AC_SUBST(common_out_object_file)
6357 AC_SUBST(tm_file_list)
6358 AC_SUBST(tm_include_list)
6359 AC_SUBST(tm_defines)
6360 AC_SUBST(tm_p_file_list)
6361 AC_SUBST(tm_p_include_list)
6362 AC_SUBST(tm_d_file_list)
6363 AC_SUBST(tm_d_include_list)
6364 AC_SUBST(xm_file_list)
6365 AC_SUBST(xm_include_list)
6366 AC_SUBST(xm_defines)
6367 AC_SUBST(use_gcc_stdint)
6368 AC_SUBST(c_target_objs)
6369 AC_SUBST(cxx_target_objs)
6370 AC_SUBST(fortran_target_objs)
6371 AC_SUBST(d_target_objs)
6372 AC_SUBST(target_cpu_default)
6374 AC_SUBST_FILE(language_hooks)
6377 if test x${build} = x${host} ; then
6378 if test x${host} = x${target} ; then
6379 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6381 echo "Links are now set up to build a cross-compiler" 1>&2
6382 echo " from ${host} to ${target}." 1>&2
6385 if test x${host} = x${target} ; then
6386 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6387 echo " for ${target}." 1>&2
6389 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6390 echo " from ${host} to ${target}." 1>&2
6394 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6395 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6397 AC_ARG_VAR(ISLLIBS,[How to link isl])
6398 AC_ARG_VAR(ISLINC,[How to find isl include files])
6399 if test "x${ISLLIBS}" != "x" ; then
6400 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6404 AC_SUBST(pluginlibs)
6405 AC_SUBST(enable_plugin)
6406 if test x"$enable_plugin" = x"yes"; then
6407 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6411 # Enable --enable-host-shared
6412 AC_ARG_ENABLE(host-shared,
6413 [AS_HELP_STRING([--enable-host-shared],
6414 [build host code as shared libraries])],
6415 [PICFLAG=-fPIC], [PICFLAG=])
6416 AC_SUBST(enable_host_shared)
6420 AC_ARG_ENABLE(libquadmath-support,
6421 [AS_HELP_STRING([--disable-libquadmath-support],
6422 [disable libquadmath support for Fortran])],
6423 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6424 ENABLE_LIBQUADMATH_SUPPORT=yes)
6425 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6426 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6427 [Define to 1 to enable libquadmath support])
6431 # Specify what hash style to use by default.
6432 AC_ARG_WITH([linker-hash-style],
6433 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6434 [specify the linker hash style])],
6435 [case x"$withval" in
6437 LINKER_HASH_STYLE=sysv
6440 LINKER_HASH_STYLE=gnu
6443 LINKER_HASH_STYLE=both
6446 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6449 [LINKER_HASH_STYLE=''])
6450 if test x"${LINKER_HASH_STYLE}" != x; then
6451 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6452 [The linker hash style])
6455 # Specify what should be the default of -fdiagnostics-color option.
6456 AC_ARG_WITH([diagnostics-color],
6457 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6458 [specify the default of -fdiagnostics-color option
6459 auto-if-env stands for -fdiagnostics-color=auto if
6460 GCC_COLOR environment variable is present and
6461 -fdiagnostics-color=never otherwise])],
6462 [case x"$withval" in
6464 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6467 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6470 DIAGNOSTICS_COLOR_DEFAULT=-1
6473 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6476 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6479 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6480 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6481 [The default for -fdiagnostics-color option])
6483 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6484 # of jit/jit-playback.c.
6485 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6486 echo "gcc_driver_version: ${gcc_driver_version}"
6487 cat > gcc-driver-name.h <<EOF
6488 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6491 # Check whether --enable-default-pie was given.
6492 AC_ARG_ENABLE(default-pie,
6493 [AS_HELP_STRING([--enable-default-pie],
6494 [enable Position Independent Executable as default])],
6495 enable_default_pie=$enableval,
6496 enable_default_pie=no)
6497 if test x$enable_default_pie = xyes ; then
6498 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6499 [Define if your target supports default PIE and it is enabled.])
6501 AC_SUBST([enable_default_pie])
6503 # Check if -fno-PIE works.
6504 AC_CACHE_CHECK([for -fno-PIE option],
6506 [saved_CXXFLAGS="$CXXFLAGS"
6507 CXXFLAGS="$CXXFLAGS -fno-PIE"
6508 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6509 [gcc_cv_c_no_fpie=yes],
6510 [gcc_cv_c_no_fpie=no])
6511 CXXFLAGS="$saved_CXXFLAGS"])
6512 if test "$gcc_cv_c_no_fpie" = "yes"; then
6513 NO_PIE_CFLAGS="-fno-PIE"
6515 AC_SUBST([NO_PIE_CFLAGS])
6517 # Check if -no-pie works.
6518 AC_CACHE_CHECK([for -no-pie option],
6520 [saved_LDFLAGS="$LDFLAGS"
6521 LDFLAGS="$LDFLAGS -no-pie"
6522 AC_LINK_IFELSE([int main(void) {return 0;}],
6523 [gcc_cv_no_pie=yes],
6525 LDFLAGS="$saved_LDFLAGS"])
6526 if test "$gcc_cv_no_pie" = "yes"; then
6527 NO_PIE_FLAG="-no-pie"
6529 AC_SUBST([NO_PIE_FLAG])
6531 # Check linker supports '-z bndplt'
6532 ld_bndplt_support=no
6533 AC_MSG_CHECKING(linker -z bndplt option)
6534 if test x"$ld_is_gold" = xno; then
6535 if test $in_tree_ld = yes ; then
6536 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6537 ld_bndplt_support=yes
6539 elif test x$gcc_cv_ld != x; then
6540 # Check if linker supports -a bndplt option
6541 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6542 ld_bndplt_support=yes
6546 if test x"$ld_bndplt_support" = xyes; then
6547 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6548 [Define if your linker supports -z bndplt])
6550 AC_MSG_RESULT($ld_bndplt_support)
6552 # Check linker supports '--push-state'/'--pop-state'
6553 ld_pushpopstate_support=no
6554 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6555 if test x"$ld_is_gold" = xno; then
6556 if test $in_tree_ld = yes ; then
6557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6558 ld_pushpopstate_support=yes
6560 elif test x$gcc_cv_ld != x; then
6561 # Check if linker supports --push-state/--pop-state options
6562 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6563 ld_pushpopstate_support=yes
6567 if test x"$ld_pushpopstate_support" = xyes; then
6568 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6569 [Define if your linker supports --push-state/--pop-state])
6571 AC_MSG_RESULT($ld_pushpopstate_support)
6573 # Configure the subdirectories
6574 # AC_CONFIG_SUBDIRS($subdirs)
6576 # Create the Makefile
6577 # and configure language subdirectories
6578 AC_CONFIG_FILES($all_outputs)
6580 AC_CONFIG_COMMANDS([default],
6582 case ${CONFIG_HEADERS} in
6583 *auto-host.h:config.in*)
6586 # Make sure all the subdirs exist.
6587 for d in $subdirs doc build common c-family
6589 test -d $d || mkdir $d
6592 [subdirs='$subdirs'])