2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2017 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 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
209 if test x${gcc_gxx_include_dir} = x; then
210 if test x${enable_version_specific_runtime_libs} = xyes; then
211 gcc_gxx_include_dir='${libsubdir}/include/c++'
213 libstdcxx_incdir='include/c++/$(version)'
214 if test x$host != x$target; then
215 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
217 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
221 gcc_gxx_include_dir_add_sysroot=0
222 if test "${with_sysroot+set}" = set; then
223 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
224 if test "${gcc_gxx_without_sysroot}"; then
225 if test x${with_sysroot} != x/; then
226 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 # Enable __cxa_atexit for C++.
815 AC_ARG_ENABLE(__cxa_atexit,
816 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
819 # Enable C extension for decimal float if target supports it.
820 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
822 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
824 [Define to 1 to enable decimal float extension to C.])
826 # Use default_decimal_float for dependency.
827 enable_decimal_float=$default_decimal_float
829 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
831 [Define to 1 to specify that we are using the BID decimal floating
832 point format instead of DPD])
834 # Enable C extension for fixed-point arithmetic.
835 AC_ARG_ENABLE(fixed-point,
836 [AS_HELP_STRING([--enable-fixed-point],
837 [enable fixed-point arithmetic extension to C])],
842 enable_fixed_point=yes
846 enable_fixed_point=yes
849 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
850 enable_fixed_point=no
854 AC_SUBST(enable_fixed_point)
856 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
857 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
858 [Define to 1 to enable fixed-point arithmetic extension to C.])
861 # Pass with no value to take the default
862 # Pass with a value to specify a thread package
863 AC_ARG_ENABLE(threads,
864 [AS_HELP_STRING([[--enable-threads[=LIB]]],
865 [enable thread usage for target GCC,
866 using LIB thread package])],,
870 [AS_HELP_STRING([--enable-tls],
871 [enable or disable generation of tls code
872 overriding the assembler check for tls support])],
876 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
877 Valid choices are 'yes' and 'no'.]) ;;
881 AC_ARG_ENABLE(vtable-verify,
882 [AS_HELP_STRING([--enable-vtable-verify],
883 [enable vtable verification feature])],,
884 [enable_vtable_verify=no])
885 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
886 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
887 [Define 0/1 if vtable verification feature is enabled.])
889 AC_ARG_ENABLE(objc-gc,
890 [AS_HELP_STRING([--enable-objc-gc],
891 [enable the use of Boehm's garbage collector with
892 the GNU Objective-C runtime])],
893 if test x$enable_objc_gc = xno; then
901 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
902 dwarf2="$with_dwarf2",
905 AC_ARG_ENABLE(shared,
906 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
908 case $enable_shared in
912 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
913 for pkg in $enableval; do
914 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
921 ], [enable_shared=yes])
922 AC_SUBST(enable_shared)
925 [AS_HELP_STRING([--with-specs=SPECS],
926 [add SPECS to driver command-line processing])],
927 [CONFIGURE_SPECS=$withval],
930 AC_SUBST(CONFIGURE_SPECS)
932 ACX_PKGVERSION([GCC])
933 ACX_BUGURL([https://gcc.gnu.org/bugs/])
935 # Sanity check enable_languages in case someone does not run the toplevel
936 # configure # script.
937 AC_ARG_ENABLE(languages,
938 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
939 [case ,${enable_languages}, in
941 # go safe -- we cannot be much sure without the toplevel
943 # analysis of which target libs are present and usable
947 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
952 enable_languages=c,${enable_languages}
955 [enable_languages=c])
957 if test x"$enable_as_accelerator_for" != x; then
958 AC_DEFINE(ACCEL_COMPILER, 1,
959 [Define if this compiler should be built as the offload target compiler.])
960 enable_as_accelerator=yes
963 # In this case we expect offload compiler to be built as native, so we
964 # need to rename the driver to avoid clashes with host's drivers.
965 program_transform_name="s&^&${target}-&" ;;
967 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
968 program_transform_name=`echo $program_transform_name | sed $sedscript`
969 accel_dir_suffix=/accel/${target_noncanonical}
970 real_target_noncanonical=${enable_as_accelerator_for}
972 AC_SUBST(enable_as_accelerator)
973 AC_SUBST(real_target_noncanonical)
974 AC_SUBST(accel_dir_suffix)
976 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
977 tgt=`echo $tgt | sed 's/=.*//'`
979 if echo "$tgt" | grep "^hsa" > /dev/null ; then
985 if test x"$offload_targets" = x; then
988 offload_targets="$offload_targets,$tgt"
991 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
992 [Define to offload targets, separated by commas.])
993 if test x"$enable_offloading" != x; then
994 AC_DEFINE(ENABLE_OFFLOADING, 1,
995 [Define this to enable support for offloading.])
997 AC_DEFINE(ENABLE_OFFLOADING, 0,
998 [Define this to enable support for offloading.])
1001 if test x"$enable_hsa" = x1 ; then
1002 AC_DEFINE(ENABLE_HSA, 1,
1003 [Define this to enable support for generating HSAIL.])
1006 AC_ARG_WITH(multilib-list,
1007 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1009 with_multilib_list=default)
1011 # -------------------------
1012 # Checks for other programs
1013 # -------------------------
1017 # Find some useful tools
1019 # We need awk to create options.c and options.h.
1020 # Bail out if it's missing.
1022 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1029 AC_SUBST(ranlib_flags)
1033 # See if cmp has --ignore-initial.
1034 gcc_AC_PROG_CMP_IGNORE_INITIAL
1036 # See if we have the mktemp command.
1037 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1039 # See if makeinfo has been installed and is modern enough
1040 # that we can use it.
1041 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1042 [GNU texinfo.* \([0-9][0-9.]*\)],
1043 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1044 if test $gcc_cv_prog_makeinfo_modern = no; then
1046 *** Makeinfo is missing or too old.
1047 *** Info documentation will not be built.])
1052 AC_SUBST(BUILD_INFO)
1054 # Is pod2man recent enough to regenerate manpages?
1055 AC_MSG_CHECKING([for recent Pod::Man])
1056 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1058 GENERATED_MANPAGES=generated-manpages
1063 AC_SUBST(GENERATED_MANPAGES)
1065 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1068 dnl Don't use AC_PROG_LEX; we insist on flex.
1069 dnl LEXLIB is not useful in gcc.
1070 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1073 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1075 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1076 # check for build == host before using them.
1079 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1080 && test -d ../binutils ; then
1081 NM='${objdir}/../binutils/nm-new'
1083 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1087 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1088 && test -d ../binutils ; then
1089 AR='${objdir}/../binutils/ar'
1091 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1094 # The jit documentation looks better if built with sphinx, but can be
1095 # built with texinfo if sphinx is not available.
1096 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1097 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1099 # --------------------
1100 # Checks for C headers
1101 # --------------------
1103 # Need to reject headers which give warnings, so that the -Werror bootstrap
1104 # works later. *sigh* This needs to come before all header checks.
1111 AC_HEADER_TIOCGWINSZ
1112 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1113 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1114 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1115 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1117 # Check for thread headers.
1118 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1119 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1121 # These tests can't be done till we know if we have limits.h.
1125 # ----------------------
1126 # Checks for C++ headers
1127 # ----------------------
1129 dnl Autoconf will give an error in the configure script if there is no
1130 dnl C++ preprocessor. Hack to prevent that.
1131 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1133 m4_popdef([AC_MSG_ERROR])[]dnl
1135 AC_CHECK_HEADERS(unordered_map)
1136 AC_CHECK_HEADERS(tr1/unordered_map)
1137 AC_CHECK_HEADERS(ext/hash_map)
1140 # Dependency checking.
1144 AC_CONFIG_COMMANDS([gccdepdir],[
1145 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1146 for lang in $subdirs c-family common
1148 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1149 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1151 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1158 # These libraries may be used by collect2.
1159 # We may need a special search path to get them linked.
1160 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1162 for libs in '' -lld -lmld \
1163 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1164 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1167 AC_TRY_LINK_FUNC(ldopen,
1168 [gcc_cv_collect2_libs="$libs"; break])
1171 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1172 case $gcc_cv_collect2_libs in
1174 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1176 AC_SUBST(COLLECT2_LIBS)
1178 # When building Ada code on Alpha, we need exc_resume which is usually in
1179 # -lexc. So test for it.
1182 AC_SEARCH_LIBS(exc_resume, exc)
1185 AC_SUBST(GNAT_LIBEXC)
1187 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1190 AC_SEARCH_LIBS(kstat_open, kstat)
1191 EXTRA_GCC_LIBS="$LIBS"
1193 AC_SUBST(EXTRA_GCC_LIBS)
1195 # Some systems put ldexp and frexp in libm instead of libc; assume
1196 # they're both in the same place. jcf-dump needs them.
1199 AC_SEARCH_LIBS(ldexp, m)
1204 # Use <inttypes.h> only if it exists,
1205 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1207 AC_MSG_CHECKING(for inttypes.h)
1208 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1209 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1210 [[#define __STDC_FORMAT_MACROS
1211 #include <sys/types.h>
1212 #include <inttypes.h>]],
1217 [gcc_cv_header_inttypes_h=yes],
1218 [gcc_cv_header_inttypes_h=no])])
1219 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1220 if test $gcc_cv_header_inttypes_h = yes; then
1221 AC_DEFINE(HAVE_INTTYPES_H, 1,
1222 [Define if you have a working <inttypes.h> header file.])
1225 dnl Disabled until we have a complete test for buggy enum bitfields.
1226 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1228 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1229 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1230 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1231 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1232 putchar_unlocked putc_unlocked)
1233 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1234 popen sysconf strsignal getrusage nl_langinfo \
1235 gettimeofday mbstowcs wcswidth mmap setlocale \
1236 gcc_UNLOCKED_FUNCS madvise)
1238 if test x$ac_cv_func_mbstowcs = xyes; then
1239 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1240 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1246 [gcc_cv_func_mbstowcs_works=yes],
1247 [gcc_cv_func_mbstowcs_works=no],
1248 [gcc_cv_func_mbstowcs_works=yes])])
1249 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1250 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1251 [Define this macro if mbstowcs does not crash when its
1252 first argument is NULL.])
1256 AC_CHECK_TYPE(ssize_t, int)
1257 AC_CHECK_TYPE(caddr_t, char *)
1259 GCC_AC_FUNC_MMAP_BLACKLIST
1263 # Under VMS, vfork works very differently than on Unix. The standard test
1264 # won't work, and it isn't easily adaptable. It makes more sense to
1266 ac_cv_func_vfork_works=yes
1273 # Until we have in-tree GNU iconv:
1275 if test -f "$LTLIBICONV"; then
1276 LIBICONV_DEP=$LTLIBICONV
1278 AC_SUBST(LIBICONV_DEP)
1284 # We will need to find libiberty.h and ansidecl.h
1285 saved_CFLAGS="$CFLAGS"
1286 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1287 saved_CXXFLAGS="$CXXFLAGS"
1288 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1290 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1291 # normal autoconf function for these. But force definition of
1292 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1293 # basename handling in libiberty.h.
1294 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1295 #undef HAVE_DECL_BASENAME
1296 #define HAVE_DECL_BASENAME 1
1297 #include "ansidecl.h"
1298 #include "system.h"])
1300 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1301 madvise stpcpy strnlen strsignal strverscmp \
1302 strtol strtoul strtoll strtoull setenv unsetenv \
1303 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1304 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1305 #include "ansidecl.h"
1306 #include "system.h"])
1308 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1309 #include "ansidecl.h"
1311 #ifdef HAVE_SYS_RESOURCE_H
1312 #include <sys/resource.h>
1316 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1317 #include "ansidecl.h"
1319 #ifdef HAVE_SYS_RESOURCE_H
1320 #include <sys/resource.h>
1322 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1323 [Define to `long' if <sys/resource.h> doesn't define.])])
1325 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1326 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1327 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1328 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1329 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1330 #include "ansidecl.h"
1339 gcc_AC_CHECK_DECLS(times, , ,[
1340 #include "ansidecl.h"
1342 #ifdef HAVE_SYS_TIMES_H
1343 #include <sys/times.h>
1347 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1348 #include "ansidecl.h"
1353 # More time-related stuff.
1354 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1356 #include "ansidecl.h"
1358 #ifdef HAVE_SYS_TIMES_H
1359 #include <sys/times.h>
1361 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1362 if test $ac_cv_struct_tms = yes; then
1363 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1364 [Define if <sys/times.h> defines struct tms.])
1367 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1368 # revisit after autoconf 2.50.
1369 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1370 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1371 #include "ansidecl.h"
1373 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1374 if test $gcc_cv_type_clock_t = yes; then
1375 AC_DEFINE(HAVE_CLOCK_T, 1,
1376 [Define if <time.h> defines clock_t.])
1379 # Check if F_SETLKW is supported by fcntl.
1380 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1381 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1382 #include <fcntl.h>]], [[
1388 return fcntl (1, F_SETLKW, &fl);]])],
1389 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1390 if test $ac_cv_f_setlkw = yes; then
1391 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1392 [Define if F_SETLKW supported by fcntl.])
1395 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1396 CFLAGS="$saved_CFLAGS"
1397 CXXFLAGS="$saved_CXXFLAGS"
1399 # mkdir takes a single argument on some systems.
1400 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1408 # With Setjmp/Longjmp based exception handling.
1409 AC_ARG_ENABLE(sjlj-exceptions,
1410 [AS_HELP_STRING([--enable-sjlj-exceptions],
1411 [arrange to use setjmp/longjmp exception handling])],
1414 if test $enableval != yes; then
1415 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1420 force_sjlj_exceptions=yes],
1423 force_sjlj_exceptions=yes
1427 force_sjlj_exceptions=yes
1431 force_sjlj_exceptions=no
1434 if test $force_sjlj_exceptions = yes; then
1435 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1436 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1437 [Define 0/1 to force the choice for exception handling model.])
1440 # --------------------------------------------------------
1441 # Build, host, and target specific configuration fragments
1442 # --------------------------------------------------------
1444 # Collect build-machine-specific information.
1445 . ${srcdir}/config.build || exit 1
1447 # Collect host-machine-specific information.
1448 . ${srcdir}/config.host || exit 1
1452 # Collect target-machine-specific information.
1453 . ${srcdir}/config.gcc || exit 1
1455 extra_objs="${host_extra_objs} ${extra_objs}"
1456 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1458 # Default the target-machine variables that were not explicitly set.
1459 if test x"$tm_file" = x
1460 then tm_file=$cpu_type/$cpu_type.h; fi
1462 if test x"$extra_headers" = x
1463 then extra_headers=; fi
1465 if test x$md_file = x
1466 then md_file=$cpu_type/$cpu_type.md; fi
1468 if test x$out_file = x
1469 then out_file=$cpu_type/$cpu_type.c; fi
1471 if test x"$tmake_file" = x
1472 then tmake_file=$cpu_type/t-$cpu_type
1475 # Support --enable-initfini-array.
1476 if test x$enable_initfini_array != xno; then
1477 tm_file="${tm_file} initfini-array.h"
1480 if test x"$dwarf2" = xyes
1481 then tm_file="$tm_file tm-dwarf2.h"
1484 # Say what files are being used for the output code and MD file.
1485 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1486 echo "Using \`$srcdir/config/$md_file' as machine description file."
1488 # If any of the xm_file variables contain nonexistent files, warn
1489 # about them and drop them.
1492 for x in $build_xm_file; do
1493 if test -f $srcdir/config/$x
1495 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1501 for x in $host_xm_file; do
1502 if test -f $srcdir/config/$x
1504 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1510 for x in $xm_file; do
1511 if test -f $srcdir/config/$x
1513 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1519 for f in $tm_file; do
1522 if test $count = ax; then
1523 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1525 echo "Using the following target machine macro files:"
1526 for f in $tm_file; do
1527 echo " $srcdir/config/$f"
1531 if test x$use_long_long_for_widest_fast_int = xyes; then
1532 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1533 [Define to 1 if the 'long long' type is wider than 'long' but still
1534 efficiently supported by the host hardware.])
1537 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1538 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1540 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1541 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1544 for f in $host_xm_file; do
1547 if test $count = a; then
1549 elif test $count = ax; then
1550 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1552 echo "Using the following host machine macro files:"
1553 for f in $host_xm_file; do
1554 echo " $srcdir/config/$f"
1557 echo "Using ${out_host_hook_obj} for host machine hooks."
1559 if test "$host_xm_file" != "$build_xm_file"; then
1561 for f in $build_xm_file; do
1564 if test $count = a; then
1566 elif test $count = ax; then
1567 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1569 echo "Using the following build machine macro files:"
1570 for f in $build_xm_file; do
1571 echo " $srcdir/config/$f"
1576 if test -n "$configured_native_system_header_dir"; then
1577 native_system_header_dir=$configured_native_system_header_dir
1579 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1580 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1584 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1585 gcc_cv_mcontext_underscores,
1587 #include <sys/cdefs.h>
1588 #include <sys/signal.h>
1589 #include <ucontext.h>
1590 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1592 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1593 if test $gcc_cv_mcontext_underscores = yes; then
1594 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1595 [mcontext_t fields start with __])
1604 # Check if a valid thread package
1605 case ${enable_threads} in
1608 target_thread_file='single'
1612 target_thread_file='single'
1614 aix | dce | lynx | mipssde | posix | rtems | \
1615 single | tpf | vxworks | win32)
1616 target_thread_file=${enable_threads}
1619 echo "${enable_threads} is an unknown thread package" 1>&2
1624 if test x${thread_file} = x; then
1625 # No thread file set by target-specific clauses in config.gcc,
1626 # so use file chosen by default logic above
1627 thread_file=${target_thread_file}
1635 if test x$enable___cxa_atexit = xyes || \
1636 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1637 if test x$host = x$target; then
1639 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1640 # keyed to flag_use_cxa_atexit
1648 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1649 [echo "__cxa_atexit can't be enabled on this target"])
1653 # We can't check for __cxa_atexit when building a cross, so assume
1657 if test x$use_cxa_atexit = xyes; then
1658 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1659 [Define if you want to use __cxa_atexit, rather than atexit, to
1660 register C++ destructors for local statics and global objects.
1661 This is essential for fully standards-compliant handling of
1662 destructors, but requires __cxa_atexit in libc.])
1666 # Look for a file containing extra machine modes.
1667 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1668 extra_modes_file='$(srcdir)'/config/${extra_modes}
1669 AC_SUBST(extra_modes_file)
1670 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1671 [Define to the name of a file containing a list of extra machine modes
1672 for this architecture.])
1675 # Convert extra_options into a form suitable for Makefile use.
1678 for f in $extra_options; do
1679 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1680 all_opt_files="$all_opt_files $srcdir/config/$f"
1682 AC_SUBST(extra_opt_files)
1684 # auto-host.h is the file containing items generated by autoconf and is
1685 # the first file included by config.h.
1686 # If host=build, it is correct to have bconfig include auto-host.h
1687 # as well. If host!=build, we are in error and need to do more
1688 # work to find out the build config parameters.
1689 if test x$host = x$build
1691 build_auto=auto-host.h
1693 # We create a subdir, then run autoconf in the subdir.
1694 # To prevent recursion we set host and build for the new
1695 # invocation of configure to the build for this invocation
1702 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1703 *) realsrcdir=../${srcdir};;
1705 # Clearing GMPINC is necessary to prevent host headers being
1706 # used by the build compiler. Defining GENERATOR_FILE stops
1707 # system.h from including gmp.h.
1708 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1709 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1710 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1711 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1712 ${realsrcdir}/configure \
1713 --enable-languages=${enable_languages-all} \
1714 --target=$target_alias --host=$build_alias --build=$build_alias
1716 # We just finished tests for the build machine, so rename
1717 # the file auto-build.h in the gcc directory.
1718 mv auto-host.h ../auto-build.h
1721 build_auto=auto-build.h
1723 AC_SUBST(build_subdir)
1725 tm_file="${tm_file} defaults.h"
1726 tm_p_file="${tm_p_file} tm-preds.h"
1727 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1728 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1729 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1730 # put this back in temporarily.
1731 xm_file="auto-host.h ansidecl.h ${xm_file}"
1738 # Compile in configure arguments.
1739 if test -f configargs.h ; then
1740 # Being re-configured.
1741 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1742 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1744 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1747 # Double all backslashes and backslash all quotes to turn
1748 # gcc_config_arguments into a C string.
1749 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1750 $gcc_config_arguments
1752 gcc_config_arguments_str=`cat conftest.out`
1755 cat > configargs.h <<EOF
1756 /* Generated automatically. */
1757 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1758 static const char thread_model[] = "$thread_file";
1760 static const struct {
1761 const char *name, *value;
1762 } configure_default_options[] = $configure_default_options;
1767 gcc_BASEVER=`cat $srcdir/BASE-VER`
1768 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1769 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1770 if test -f $srcdir/REVISION ; then
1771 gcc_REVISION=`cat $srcdir/REVISION`
1775 cat > plugin-version.h <<EOF
1776 #include "configargs.h"
1778 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1779 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1780 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1781 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1783 static char basever[] = "$gcc_BASEVER";
1784 static char datestamp[] = "$gcc_DATESTAMP";
1785 static char devphase[] = "$gcc_DEVPHASE";
1786 static char revision[] = "$gcc_REVISION";
1788 /* FIXME plugins: We should make the version information more precise.
1789 One way to do is to add a checksum. */
1791 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1793 configuration_arguments};
1797 # Determine what GCC version number to use in filesystem paths.
1800 # Internationalization
1801 ZW_GNU_GETTEXT_SISTER_DIR
1803 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1804 # -liconv on the link line twice.
1805 case "$LIBINTL" in *$LIBICONV*)
1809 AC_ARG_ENABLE(secureplt,
1810 [AS_HELP_STRING([--enable-secureplt],
1811 [enable -msecure-plt by default for PowerPC])],
1814 AC_ARG_ENABLE(mingw-wildcard,
1815 [AS_HELP_STRING([--enable-mingw-wildcard],
1816 [Set whether to expand wildcard on command-line.
1817 Default to platform configuration])],
1818 [],[enable_mingw_wildcard=platform])
1819 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1820 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1821 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1822 [Value to set mingw's _dowildcard to.])])
1824 AC_ARG_ENABLE(leading-mingw64-underscores,
1825 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1826 [enable leading underscores on 64 bit mingw targets]),
1828 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1829 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1830 [Define if we should use leading underscore on 64 bit mingw targets])])
1833 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1836 AC_ARG_ENABLE(frame-pointer,
1837 [AS_HELP_STRING([--enable-frame-pointer],
1838 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1841 linux* | darwin[[8912]]*)
1842 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1844 enable_frame_pointer=no
1847 enable_frame_pointer=yes
1852 # Windows32 Registry support for specifying GCC installation paths.
1853 AC_ARG_ENABLE(win32-registry,
1854 [AS_HELP_STRING([--disable-win32-registry],
1855 [disable lookup of installation paths in the
1856 Registry on Windows hosts])
1857 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1858 AS_HELP_STRING([--enable-win32-registry=KEY],
1859 [use KEY instead of GCC version as the last portion
1860 of the registry key])],,)
1863 win32 | pe | cygwin* | mingw32*)
1864 if test "x$enable_win32_registry" != xno; then
1865 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1868 if test "x$enable_win32_registry" != xno; then
1869 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1870 [Define to 1 if installation paths should be looked up in the Windows
1871 Registry. Ignored on non-Windows hosts.])
1873 if test "x$enable_win32_registry" != xyes \
1874 && test "x$enable_win32_registry" != x; then
1875 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1876 [Define to be the last component of the Windows registry key under which
1877 to look for installation paths. The full key used will be
1878 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1879 The default is the GCC version number.])
1885 # Get an absolute path to the GCC top-level source directory
1886 holddir=`${PWDCMD-pwd}`
1888 topdir=`${PWDCMD-pwd}`
1891 # Conditionalize the makefile for this host machine.
1893 for f in ${host_xmake_file}
1895 if test -f ${srcdir}/config/$f
1897 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1901 # Conditionalize the makefile for this target machine.
1903 for f in ${tmake_file}
1905 if test -f ${srcdir}/config/$f
1907 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1910 tmake_file="${tmake_file_}"
1912 out_object_file=`basename $out_file .c`.o
1913 common_out_object_file=`basename $common_out_file .c`.o
1915 tm_file_list="options.h"
1916 tm_include_list="options.h insn-constants.h"
1917 for f in $tm_file; do
1920 f=`echo $f | sed 's/^..//'`
1921 tm_file_list="${tm_file_list} $f"
1922 tm_include_list="${tm_include_list} $f"
1925 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1926 tm_include_list="${tm_include_list} $f"
1929 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1930 tm_include_list="${tm_include_list} config/$f"
1937 for f in $tm_p_file; do
1940 tm_p_file_list="${tm_p_file_list} $f"
1941 tm_p_include_list="${tm_p_include_list} $f"
1944 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1945 tm_p_include_list="${tm_p_include_list} config/$f"
1951 for f in $xm_file; do
1954 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1955 xm_include_list="${xm_include_list} $f"
1958 xm_file_list="${xm_file_list} $f"
1959 xm_include_list="${xm_include_list} $f"
1962 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1963 xm_include_list="${xm_include_list} config/$f"
1969 host_xm_include_list=
1970 for f in $host_xm_file; do
1973 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1974 host_xm_include_list="${host_xm_include_list} $f"
1977 host_xm_file_list="${host_xm_file_list} $f"
1978 host_xm_include_list="${host_xm_include_list} $f"
1981 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1982 host_xm_include_list="${host_xm_include_list} config/$f"
1988 for f in $build_xm_file; do
1991 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1992 build_xm_include_list="${build_xm_include_list} $f"
1994 auto-build.h | auto-host.h )
1995 build_xm_file_list="${build_xm_file_list} $f"
1996 build_xm_include_list="${build_xm_include_list} $f"
1999 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2000 build_xm_include_list="${build_xm_include_list} config/$f"
2005 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2006 # cross-compiler which does not use the native headers and libraries.
2007 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2008 CROSS= AC_SUBST(CROSS)
2009 ALL=all.internal AC_SUBST(ALL)
2010 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2011 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2013 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2014 test x$build != x$host || test "x$with_build_sysroot" != x; then
2015 if test "x$with_build_sysroot" != x; then
2016 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2018 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2021 if test x$host != x$target
2023 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2025 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2026 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2027 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2030 if test "x$with_build_sysroot" != "x"; then
2031 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2032 elif test "x$with_sysroot" = x; then
2033 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2034 elif test "x$with_sysroot" = xyes; then
2035 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2037 target_header_dir="${with_sysroot}${native_system_header_dir}"
2040 target_header_dir=${native_system_header_dir}
2043 # If this is a cross-compiler that does not
2044 # have its own set of headers then define
2047 # If this is using newlib, without having the headers available now,
2048 # then define inhibit_libc in LIBGCC2_CFLAGS.
2049 # This prevents libgcc2 from containing any code which requires libc
2051 : ${inhibit_libc=false}
2052 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2053 test x$with_newlib = xyes ; } &&
2054 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2057 AC_SUBST(inhibit_libc)
2059 # When building gcc with a cross-compiler, we need to adjust things so
2060 # that the generator programs are still built with the native compiler.
2061 # Also, we cannot run fixincludes.
2063 # These are the normal (build=host) settings:
2064 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2065 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2066 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2067 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2068 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2069 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2071 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2072 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2074 # And these apply if build != host, or we are generating coverage data
2075 if test x$build != x$host || test "x$coverage_flags" != x
2077 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2078 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2079 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2081 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2082 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2083 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2084 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2086 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2087 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2089 # Expand extra_headers to include complete path.
2090 # This substitutes for lots of t-* files.
2092 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2093 for file in ${extra_headers} ; do
2094 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2097 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2098 if test x"$use_gcc_tgmath" = xyes
2099 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2102 # Define collect2 in Makefile.
2103 case $host_can_use_collect2 in
2105 *) collect2='collect2$(exeext)' ;;
2107 AC_SUBST([collect2])
2109 # Add a definition of USE_COLLECT2 if system wants one.
2110 case $use_collect2 in
2111 no) use_collect2= ;;
2114 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2115 xm_defines="${xm_defines} USE_COLLECT2"
2116 case $host_can_use_collect2 in
2118 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2124 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2125 [Define to the name of the LTO plugin DSO that must be
2126 passed to the linker's -plugin=LIB option.])
2128 # ---------------------------
2129 # Assembler & linker features
2130 # ---------------------------
2132 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2133 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2134 # However when ld-new is first executed from the build tree, libtool will
2135 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2136 # to the build tree. While doing this we need to use the previous-stage
2137 # linker, or we have an infinite loop. The presence of a shell script as
2138 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2139 # the gcc/collect-ld script. So we need to know how libtool works, or
2140 # exec-tool will fail.
2142 m4_defun([_LT_CONFIG_COMMANDS], [])
2145 AC_SUBST(enable_fast_install)
2147 # Identify the assembler which will work hand-in-glove with the newly
2148 # built GCC, so that we can examine its features. This is the assembler
2149 # which will be driven by the driver program.
2151 # If build != host, and we aren't building gas in-tree, we identify a
2152 # build->target assembler and hope that it will have the same features
2153 # as the host->target assembler we'll be using.
2154 gcc_cv_gas_major_version=
2155 gcc_cv_gas_minor_version=
2156 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2158 m4_pattern_allow([AS_FOR_TARGET])dnl
2159 AS_VAR_SET_IF(gcc_cv_as,, [
2160 if test -x "$DEFAULT_ASSEMBLER"; then
2161 gcc_cv_as="$DEFAULT_ASSEMBLER"
2162 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2163 && test -f ../gas/Makefile \
2164 && test x$build = x$host; then
2165 gcc_cv_as=../gas/as-new$build_exeext
2166 elif test -x as$build_exeext; then
2167 # Build using assembler in the current directory.
2168 gcc_cv_as=./as$build_exeext
2169 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2170 gcc_cv_as="$AS_FOR_TARGET"
2172 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2175 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2176 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2177 case "$ORIGINAL_AS_FOR_TARGET" in
2178 ./as | ./as$build_exeext) ;;
2179 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2182 AC_MSG_CHECKING(what assembler to use)
2183 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2184 # Single tree build which includes gas. We want to prefer it
2185 # over whatever linker top-level may have detected, since
2186 # we'll use what we're building after installation anyway.
2187 AC_MSG_RESULT(newly built gas)
2189 _gcc_COMPUTE_GAS_VERSION
2190 in_tree_gas_is_elf=no
2191 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2192 || (grep 'obj_format = multi' ../gas/Makefile \
2193 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2195 in_tree_gas_is_elf=yes
2198 AC_MSG_RESULT($gcc_cv_as)
2204 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2205 [case "${enableval}" in
2211 install_gold_as_default=no
2213 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2214 [case "${enableval}" in
2216 install_gold_as_default=yes
2219 if test x${default_ld} != x; then
2220 install_gold_as_default=yes
2226 AC_MSG_ERROR([invalid --enable-gold argument])
2230 # Identify the linker which will work hand-in-glove with the newly
2231 # built GCC, so that we can examine its features. This is the linker
2232 # which will be driven by the driver program.
2234 # If build != host, and we aren't building gas in-tree, we identify a
2235 # build->target linker and hope that it will have the same features
2236 # as the host->target linker we'll be using.
2237 gcc_cv_gld_major_version=
2238 gcc_cv_gld_minor_version=
2239 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2240 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2241 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2243 AS_VAR_SET_IF(gcc_cv_ld,, [
2244 if test -x "$DEFAULT_LINKER"; then
2245 gcc_cv_ld="$DEFAULT_LINKER"
2246 elif test $install_gold_as_default = yes \
2247 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2248 && test -f ../gold/Makefile \
2249 && test x$build = x$host; then
2250 gcc_cv_ld=../gold/ld-new$build_exeext
2251 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2252 && test -f ../ld/Makefile \
2253 && test x$build = x$host; then
2254 gcc_cv_ld=../ld/ld-new$build_exeext
2255 elif test -x collect-ld$build_exeext; then
2256 # Build using linker in the current directory.
2257 gcc_cv_ld=./collect-ld$build_exeext
2258 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2259 gcc_cv_ld="$LD_FOR_TARGET"
2261 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2264 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2265 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2266 # if the PLUGIN_LD is set ld-new, just have it as ld
2267 # as that is the installed named.
2268 if test x$PLUGIN_LD_SUFFIX = xld-new \
2269 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2272 AC_ARG_WITH(plugin-ld,
2273 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2274 [if test x"$withval" != x; then
2275 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2276 PLUGIN_LD_SUFFIX="$withval"
2278 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2279 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2281 # Check to see if we are using gold instead of ld
2282 AC_MSG_CHECKING(whether we are using gold)
2284 if test x$gcc_cv_ld != x; then
2285 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2286 | grep "GNU gold" > /dev/null; then
2290 AC_MSG_RESULT($ld_is_gold)
2292 AC_MSG_CHECKING(gold linker with split stack support as non default)
2293 # Check to see if default ld is not gold, but gold is
2294 # available and has support for split stack. If gcc was configured
2295 # with gold then no checking is done.
2297 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2299 # For platforms other than powerpc64*, enable as appropriate.
2302 ld_gold=`which ${gcc_cv_ld}.gold`
2303 # Make sure this gold has minimal split stack support
2304 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2305 ld_vers=`$ld_gold --version | sed 1q`
2306 gold_vers=`echo $ld_vers | sed -n \
2307 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2309 # check that the gold version contains the complete split stack support
2310 # on powerpc64 big and little endian
2312 case "$gold_vers" in
2313 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2315 *) gold_non_default=no
2321 if test $gold_non_default = yes; then
2322 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2323 [Define if the gold linker supports split stack and is available as a non-default])
2326 AC_MSG_RESULT($gold_non_default)
2328 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2329 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2330 case "$ORIGINAL_LD_FOR_TARGET" in
2331 ./collect-ld | ./collect-ld$build_exeext) ;;
2332 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2335 AC_MSG_CHECKING(what linker to use)
2336 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2337 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2338 # Single tree build which includes ld. We want to prefer it
2339 # over whatever linker top-level may have detected, since
2340 # we'll use what we're building after installation anyway.
2341 AC_MSG_RESULT(newly built ld)
2343 in_tree_ld_is_elf=no
2344 if (grep 'EMUL = .*elf' ../ld/Makefile \
2345 || grep 'EMUL = .*linux' ../ld/Makefile \
2346 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2347 in_tree_ld_is_elf=yes
2348 elif test "$ld_is_gold" = yes; then
2349 in_tree_ld_is_elf=yes
2351 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
2354 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2355 if test x$gcc_cv_gld_version != x; then
2359 case $gcc_cv_gld_version in
2362 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2365 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2366 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2368 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2369 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2371 AC_MSG_RESULT($gcc_cv_ld)
2373 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2374 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2375 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2378 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2379 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2381 # Figure out what nm we will be using.
2382 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2383 AS_VAR_SET_IF(gcc_cv_nm,, [
2384 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2385 && test -f ../binutils/Makefile \
2386 && test x$build = x$host; then
2387 gcc_cv_nm=../binutils/nm-new$build_exeext
2388 elif test -x nm$build_exeext; then
2389 gcc_cv_nm=./nm$build_exeext
2390 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2391 gcc_cv_nm="$NM_FOR_TARGET"
2393 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2396 AC_MSG_CHECKING(what nm to use)
2397 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2398 # Single tree build which includes binutils.
2399 AC_MSG_RESULT(newly built nm)
2402 AC_MSG_RESULT($gcc_cv_nm)
2406 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2407 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2408 case "$ORIGINAL_NM_FOR_TARGET" in
2409 ./nm | ./nm$build_exeext) ;;
2410 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2414 # Figure out what objdump we will be using.
2415 AS_VAR_SET_IF(gcc_cv_objdump,, [
2416 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2417 && test -f ../binutils/Makefile \
2418 && test x$build = x$host; then
2419 # Single tree build which includes binutils.
2420 gcc_cv_objdump=../binutils/objdump$build_exeext
2421 elif test -x objdump$build_exeext; then
2422 gcc_cv_objdump=./objdump$build_exeext
2423 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2424 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2426 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2429 AC_MSG_CHECKING(what objdump to use)
2430 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2431 # Single tree build which includes binutils.
2432 AC_MSG_RESULT(newly built objdump)
2433 elif test x$gcc_cv_objdump = x; then
2434 AC_MSG_RESULT(not found)
2436 AC_MSG_RESULT($gcc_cv_objdump)
2439 # Figure out what readelf we will be using.
2440 AS_VAR_SET_IF(gcc_cv_readelf,, [
2441 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2442 && test -f ../binutils/Makefile \
2443 && test x$build = x$host; then
2444 # Single tree build which includes binutils.
2445 gcc_cv_readelf=../binutils/readelf$build_exeext
2446 elif test -x readelf$build_exeext; then
2447 gcc_cv_readelf=./readelf$build_exeext
2448 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2449 gcc_cv_readelf="$READELF_FOR_TARGET"
2451 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2454 AC_MSG_CHECKING(what readelf to use)
2455 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2456 # Single tree build which includes binutils.
2457 AC_MSG_RESULT(newly built readelf)
2458 elif test x$gcc_cv_readelf = x; then
2459 AC_MSG_RESULT(not found)
2461 AC_MSG_RESULT($gcc_cv_readelf)
2464 # Figure out what assembler alignment features are present.
2465 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2469 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2470 [Define if your assembler supports .balign and .p2align.])])
2472 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2475 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2476 [Define if your assembler supports specifying the maximum number
2477 of bytes to skip when using the GAS .p2align command.])])
2479 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2482 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2483 [Define if your assembler supports .literal16.])])
2485 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2487 [conftest_label1: .word 0
2489 conftest_label2: .word 0
2491 [if test x$gcc_cv_nm != x; then
2492 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2493 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2494 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2496 else gcc_cv_as_subsection_m1=yes
2498 rm -f conftest.nm1 conftest.nm2
2500 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2501 [Define if your assembler supports .subsection and .subsection -1 starts
2502 emitting at the beginning of your section.])])
2504 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2507 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2509 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2511 [ .weakref foobar, barfnot],,
2512 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2514 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2517 .NSUBSPA $CODE$,COMDAT],,
2518 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2520 # .hidden needs to be supported in both the assembler and the linker,
2521 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2522 # This is irritatingly difficult to feature test for; we have to check the
2523 # date string after the version number. If we've got an in-tree
2524 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2526 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2529 conftest_s=' .globl foobar,hidden'
2532 conftest_s=' .hidden foobar
2536 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2537 [elf,2,13,0],, [$conftest_s])
2540 # Darwin as has some visibility support, though with a different syntax.
2541 gcc_cv_as_hidden=yes
2545 # gnu_indirect_function type is an extension proposed at
2546 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2547 # selection of function implementation
2548 AC_ARG_ENABLE(gnu-indirect-function,
2549 [AS_HELP_STRING([--enable-gnu-indirect-function],
2550 [enable the use of the @gnu_indirect_function to glibc systems])],
2551 [case $enable_gnu_indirect_function in
2553 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2554 Valid choices are 'yes' and 'no'.]) ;;
2556 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2558 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2559 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2560 [Define if your system supports gnu indirect functions.])
2564 if test $in_tree_ld != yes ; then
2565 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2566 if echo "$ld_ver" | grep GNU > /dev/null; then
2567 if test x"$ld_is_gold" = xyes; then
2568 # GNU gold --version looks like this:
2570 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2572 # We extract the binutils version which is more familiar and specific
2573 # than the gold version.
2574 ld_vers=`echo $ld_ver | sed -n \
2575 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2577 # GNU ld --version looks like this:
2579 # GNU ld (GNU Binutils) 2.21.51.20110225
2580 ld_vers=`echo $ld_ver | sed -n \
2581 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2583 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2584 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2585 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2586 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2590 # Solaris 2 ld -V output looks like this for a regular version:
2592 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2594 # but test versions add stuff at the end:
2596 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2598 # In Solaris 11.4, this was changed to
2600 # ld: Solaris ELF Utilities: 11.4-1.3123
2602 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2603 # numbers can be used in ld.so.1 feature checks even if a different
2604 # linker is configured.
2605 ld_ver=`$gcc_cv_ld -V 2>&1`
2606 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2607 ld_vers=`echo $ld_ver | sed -n \
2608 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2609 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2610 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2618 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2619 [[if test $in_tree_ld = yes ; then
2621 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2622 && test $in_tree_ld_is_elf = yes; then
2623 gcc_cv_ld_hidden=yes
2626 gcc_cv_ld_hidden=yes
2627 if test x"$ld_is_gold" = xyes; then
2629 elif echo "$ld_ver" | grep GNU > /dev/null; then
2631 mmix-knuth-mmixware)
2632 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2636 if test 0"$ld_date" -lt 20020404; then
2637 if test -n "$ld_date"; then
2638 # If there was date string, but was earlier than 2002-04-04, fail
2640 elif test -z "$ld_vers"; then
2641 # If there was no date string nor ld version number, something is wrong
2644 test -z "$ld_vers_patch" && ld_vers_patch=0
2645 if test "$ld_vers_major" -lt 2; then
2647 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2648 gcc_cv_ld_hidden="no"
2649 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2657 gcc_cv_ld_hidden=yes
2660 # Darwin ld has some visibility support.
2661 gcc_cv_ld_hidden=yes
2663 hppa64*-*-hpux* | ia64*-*-hpux*)
2664 gcc_cv_ld_hidden=yes
2666 *-*-solaris2.1[0-9]*)
2667 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2668 # .symbolic was only added in Solaris 9 12/02.
2669 gcc_cv_ld_hidden=yes
2677 libgcc_visibility=no
2678 AC_SUBST(libgcc_visibility)
2679 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2680 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2681 libgcc_visibility=yes
2682 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2683 [Define if your assembler and linker support .hidden.])
2686 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2687 gcc_cv_ld_ro_rw_mix=unknown
2688 if test $in_tree_ld = yes ; then
2689 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2690 && test $in_tree_ld_is_elf = yes; then
2691 gcc_cv_ld_ro_rw_mix=read-write
2693 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2694 echo '.section myfoosect, "a"' > conftest1.s
2695 echo '.section myfoosect, "aw"' > conftest2.s
2696 echo '.byte 1' >> conftest2.s
2697 echo '.section myfoosect, "a"' > conftest3.s
2698 echo '.byte 0' >> conftest3.s
2699 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2700 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2701 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2702 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2703 conftest2.o conftest3.o > /dev/null 2>&1; then
2704 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2705 | sed -e '/myfoosect/!d' -e N`
2706 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2707 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2708 gcc_cv_ld_ro_rw_mix=read-only
2710 gcc_cv_ld_ro_rw_mix=read-write
2715 rm -f conftest.* conftest[123].*
2718 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2719 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2720 [Define if your linker links a mix of read-only
2721 and read-write sections into a read-write section.])
2723 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2725 gcc_AC_INITFINI_ARRAY
2727 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2728 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2736 [[# GAS versions before 2.11 do not support uleb128,
2737 # despite appearing to.
2738 # ??? There exists an elf-specific test that will crash
2739 # the assembler. Perhaps it's better to figure out whether
2740 # arbitrary sections are supported and try the test.
2741 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2742 if echo "$as_ver" | grep GNU > /dev/null; then
2743 as_vers=`echo $as_ver | sed -n \
2744 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2745 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2746 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2747 if test $as_major -eq 2 && test $as_minor -lt 11
2749 else gcc_cv_as_leb128=yes
2752 [AC_DEFINE(HAVE_AS_LEB128, 1,
2753 [Define if your assembler supports .sleb128 and .uleb128.])],
2754 [AC_DEFINE(HAVE_AS_LEB128, 0,
2755 [Define if your assembler supports .sleb128 and .uleb128.])])
2757 # Check if we have assembler support for unwind directives.
2758 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2765 .cfi_escape 1, 2, 3, 4, 5
2769 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2770 # read-only and read-write sections, we need to make sure that the
2771 # assembler used emits read-write .eh_frame sections.
2772 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2773 if test "x$gcc_cv_objdump" != x; then
2774 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2775 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2776 gcc_cv_as_cfi_directive=no
2779 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2780 # On Solaris/x86, make sure that GCC and assembler agree on using
2781 # read-only .eh_frame sections for 64-bit.
2782 if test x$gas = xyes; then
2783 as_ix86_64_opt="--64"
2785 as_ix86_64_opt="-xarch=amd64"
2787 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2788 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2789 sed -e /.eh_frame/!d -e N | \
2790 grep READONLY > /dev/null; then
2791 gcc_cv_as_cfi_directive=yes
2793 gcc_cv_as_cfi_directive=no
2797 gcc_cv_as_cfi_directive=yes
2802 # no objdump, err on the side of caution
2803 gcc_cv_as_cfi_directive=no
2806 gcc_cv_as_cfi_directive=yes
2810 gcc_cv_as_cfi_directive=yes
2813 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2814 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2818 .cfi_adjust_cfa_offset 64
2820 .cfi_adjust_cfa_offset 128
2823 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2824 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2825 gcc_cv_as_cfi_advance_working=yes
2829 # no objdump, err on the side of caution
2830 gcc_cv_as_cfi_advance_working=no
2832 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2833 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2834 [`if test $gcc_cv_as_cfi_directive = yes \
2835 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2836 [Define 0/1 if your assembler supports CFI directives.])
2838 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2839 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2840 gcc_cv_as_cfi_personality_directive, ,,
2843 .cfi_personality 0, symbol
2845 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2846 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2847 then echo 1; else echo 0; fi`],
2848 [Define 0/1 if your assembler supports .cfi_personality.])
2850 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2851 gcc_cv_as_cfi_sections_directive, ,,
2853 .cfi_sections .debug_frame, .eh_frame
2857 win32 | pe | cygwin* | mingw32*)
2858 # Need to check that we generated the correct relocation for the
2859 # .debug_frame section. This was fixed for binutils 2.21.
2860 gcc_cv_as_cfi_sections_directive=no
2861 if test "x$gcc_cv_objdump" != x; then
2862 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2863 grep secrel > /dev/null; then
2864 gcc_cv_as_cfi_sections_directive=yes
2869 gcc_cv_as_cfi_sections_directive=yes
2872 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2873 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2874 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2875 then echo 1; else echo 0; fi`],
2876 [Define 0/1 if your assembler supports .cfi_sections.])
2878 # GAS versions up to and including 2.11.0 may mis-optimize
2880 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2888 .section .eh_frame,"aw",@progbits
2890 .4byte .LECIE1-.LSCIE1
2904 .4byte .LEFDE1-.LASFDE1
2906 .4byte .LASFDE1-__FRAME_BEGIN__
2914 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2915 cat > conftest.lit <<EOF
2916 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2917 0010 01000000 12000000 18000000 00000000 ................
2918 0020 08000000 04080000 0044 .........D @&t@
2920 cat > conftest.big <<EOF
2921 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2922 0010 00000001 00000012 00000018 00000000 ................
2923 0020 00000008 04000000 0844 .........D @&t@
2925 # If the assembler didn't choke, and we can objdump,
2926 # and we got the correct data, then succeed.
2927 # The text in the here-document typically retains its unix-style line
2928 # endings, while the output of objdump will use host line endings.
2929 # Therefore, use diff -b for the comparisons.
2930 if test x$gcc_cv_objdump != x \
2931 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2932 | tail -3 > conftest.got \
2933 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2934 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2936 gcc_cv_as_eh_frame=yes
2937 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2938 gcc_cv_as_eh_frame=buggy
2940 # Uh oh, what do we do now?
2941 gcc_cv_as_eh_frame=no
2944 if test $gcc_cv_as_eh_frame = buggy; then
2945 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2946 [Define if your assembler mis-optimizes .eh_frame data.])
2949 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2950 [elf,2,12,0], [--fatal-warnings],
2951 [.section .rodata.str, "aMS", @progbits, 1])
2952 if test $gcc_cv_as_shf_merge = no; then
2953 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2954 [elf,2,12,0], [--fatal-warnings],
2955 [.section .rodata.str, "aMS", %progbits, 1])
2957 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2958 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2959 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2961 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2962 [.stabs "gcc2_compiled.",60,0,0,0],,
2963 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2964 [Define if your assembler supports .stabs.])])
2966 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2967 gcc_cv_as_comdat_group,
2968 [elf,2,16,0], [--fatal-warnings],
2969 [.section .text,"axG",@progbits,.foo,comdat])
2970 if test $gcc_cv_as_comdat_group = yes; then
2971 gcc_cv_as_comdat_group_percent=no
2972 gcc_cv_as_comdat_group_group=no
2974 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2975 gcc_cv_as_comdat_group_percent,
2976 [elf,2,16,0], [--fatal-warnings],
2977 [.section .text,"axG",%progbits,.foo,comdat])
2978 if test $gcc_cv_as_comdat_group_percent = yes; then
2979 gcc_cv_as_comdat_group_group=no
2982 # Sun as uses a completely different syntax.
2987 .group foo,".text%foo",#comdat
2988 .section ".text%foo", #alloc,#execinstr,#progbits
2993 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2995 .group foo,.text%foo,#comdat
2996 .section .text%foo, "ax", @progbits
3002 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3003 gcc_cv_as_comdat_group_group,
3007 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3008 gcc_cv_as_comdat_group_group=no
3012 if test x"$ld_is_gold" = xyes; then
3014 elif test $in_tree_ld = yes ; then
3016 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3017 && test $in_tree_ld_is_elf = yes; then
3020 elif echo "$ld_ver" | grep GNU > /dev/null; then
3022 if test 0"$ld_date" -lt 20050308; then
3023 if test -n "$ld_date"; then
3024 # If there was date string, but was earlier than 2005-03-08, fail
3026 elif test "$ld_vers_major" -lt 2; then
3028 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3035 *-*-solaris2.1[1-9]*)
3037 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3038 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3041 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3042 # least ld version 1.2267.
3043 if test "$ld_vers_major" -gt 1; then
3045 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3047 elif test "$ld_vers_minor" -ge 2267; then
3052 # Assume linkers other than GNU ld don't support COMDAT group.
3058 # Allow overriding the automatic COMDAT group tests above.
3059 AC_ARG_ENABLE(comdat,
3060 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3061 [comdat_group="$enable_comdat"])
3062 if test $comdat_group = no; then
3063 gcc_cv_as_comdat_group=no
3064 gcc_cv_as_comdat_group_percent=no
3065 gcc_cv_as_comdat_group_group=no
3067 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3068 [`if test $gcc_cv_as_comdat_group = yes \
3069 || test $gcc_cv_as_comdat_group_percent = yes \
3070 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3071 [Define 0/1 if your assembler and linker support COMDAT groups.])
3073 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3074 gcc_cv_as_discriminator,
3078 .loc 1 1 0 discriminator 1],,
3079 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3080 [Define if your assembler supports the .loc discriminator sub-directive.])])
3082 # Thread-local storage - the check is heavily parameterized.
3091 .section ".tdata","awT",@progbits
3094 ldq $27,__tls_get_addr($29) !literal!1
3095 lda $16,foo($29) !tlsgd!1
3096 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3097 ldq $27,__tls_get_addr($29) !literal!2
3098 lda $16,foo($29) !tlsldm!2
3099 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3100 ldq $1,foo($29) !gotdtprel
3101 ldah $2,foo($29) !dtprelhi
3102 lda $3,foo($2) !dtprello
3103 lda $4,foo($29) !dtprel
3104 ldq $1,foo($29) !gottprel
3105 ldah $2,foo($29) !tprelhi
3106 lda $3,foo($2) !tprello
3107 lda $4,foo($29) !tprel'
3110 tls_as_opt=--fatal-warnings
3114 add_s r0,r0, @foo@tpoff'
3118 cris-*-*|crisv32-*-*)
3120 .section ".tdata","awT",@progbits
3127 tls_as_opt=--fatal-warnings
3131 .section ".tdata","awT",@progbits
3143 .section ".tdata","awT",@progbits
3147 addil LT%foo-$tls_gdidx$,gp
3148 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3151 addil LT%foo-$tls_ldidx$,gp
3153 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3154 addil LR%foo-$tls_dtpoff$,%ret0
3155 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3157 addil LT%foo-$tls_ieoff$,gp
3158 ldw RT%foo-$tls_ieoff$(%r1),%t2
3161 addil LR%foo-$tls_leoff$,%t1
3162 ldo RR%foo-$tls_leoff$(%r1),%t2'
3165 tls_as_opt=--fatal-warnings
3169 .section ".tdata","awT",%progbits
3180 i[34567]86-*-* | x86_64-*-*)
3182 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3189 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3191 .section .tdata,"awt",@progbits'
3196 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3197 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3201 .section ".tdata","awT",@progbits'
3205 tls_as_opt="--fatal-warnings"
3209 conftest_s="$conftest_s
3213 leal foo@tlsgd(,%ebx,1), %eax
3214 leal foo@tlsldm(%ebx), %eax
3215 leal foo@dtpoff(%eax), %edx
3216 movl foo@gottpoff(%ebx), %eax
3217 subl foo@gottpoff(%ebx), %eax
3218 addl foo@gotntpoff(%ebx), %eax
3219 movl foo@indntpoff, %eax
3220 movl \$foo@tpoff, %eax
3221 subl \$foo@tpoff, %eax
3222 leal foo@ntpoff(%ecx), %eax"
3225 if test x$on_solaris = xyes; then
3227 yes) tls_as_opt="$tls_as_opt --64" ;;
3228 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3231 conftest_s="$conftest_s
3235 leaq foo@tlsgd(%rip), %rdi
3236 leaq foo@tlsld(%rip), %rdi
3237 leaq foo@dtpoff(%rax), %rdx
3238 movq foo@gottpoff(%rip), %rax
3239 movq \$foo@tpoff, %rax"
3245 .section ".tdata","awT",@progbits
3248 addl r16 = @ltoff(@dtpmod(foo#)), gp
3249 addl r17 = @ltoff(@dtprel(foo#)), gp
3250 addl r18 = @ltoff(@tprel(foo#)), gp
3251 addl r19 = @dtprel(foo#), gp
3252 adds r21 = @dtprel(foo#), r13
3253 movl r23 = @dtprel(foo#)
3254 addl r20 = @tprel(foo#), gp
3255 adds r22 = @tprel(foo#), r13
3256 movl r24 = @tprel(foo#)'
3259 tls_as_opt=--fatal-warnings
3263 .section .tdata,"awT",@progbits
3267 addik r5,r20,x@TLSGD
3268 addik r5,r20,x@TLSLDM'
3271 tls_as_opt='--fatal-warnings'
3275 .section .tdata,"awT",@progbits
3279 addiu $4, $28, %tlsgd(x)
3280 addiu $4, $28, %tlsldm(x)
3281 lui $4, %dtprel_hi(x)
3282 addiu $4, $4, %dtprel_lo(x)
3283 lw $4, %gottprel(x)($28)
3284 lui $4, %tprel_hi(x)
3285 addiu $4, $4, %tprel_lo(x)'
3288 tls_as_opt='-32 --fatal-warnings'
3292 .section .tdata,"awT",@progbits
3297 move.l x@TLSGD(%a5),%a0
3298 move.l x@TLSLDM(%a5),%a0
3299 move.l x@TLSLDO(%a5),%a0
3300 move.l x@TLSIE(%a5),%a0
3301 move.l x@TLSLE(%a5),%a0'
3304 tls_as_opt='--fatal-warnings'
3308 .section ".tdata","awT",@progbits'
3311 tls_as_opt="--fatal-warnings"
3315 .section ".tdata","awT",%progbits
3319 add x0, x0, #:tlsgd_lo12:x
3324 tls_as_opt='--fatal-warnings'
3328 .extern __get_tpointer
3346 .section ".tdata","awT",@progbits
3354 addi 3,2,ld0@got@tlsgd
3360 addi 3,2,x1@got@tlsld
3366 addis 9,3,x2@dtprel@ha
3367 addi 9,9,x2@dtprel@l
3370 ld 9,x3@got@dtprel(2)
3376 tls_as_opt="-a64 --fatal-warnings"
3380 .section ".tdata","awT",@progbits
3388 addi 3,31,ld0@got@tlsgd
3390 addi 3,31,x1@got@tlsld
3393 addis 9,3,x2@dtprel@ha
3394 addi 9,9,x2@dtprel@l
3395 lwz 9,x3@got@tprel(31)
3398 addis 9,2,x2@tprel@ha
3399 addi 9,9,x2@tprel@l'
3402 tls_as_opt="-a32 --fatal-warnings"
3406 .section .tdata,"awT",@progbits
3410 call __tls_get_addr'
3413 tls_as_opt='--fatal-warnings'
3417 .section ".tdata","awT",@progbits
3426 l %r1,foo@GOTNTPOFF(%r12)
3427 l %r1,0(%r1):tls_load:foo
3428 bas %r14,0(%r1,%r13):tls_gdcall:foo
3429 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3432 tls_as_opt="-m31 --fatal-warnings"
3436 .section ".tdata","awT",@progbits
3444 lg %r1,foo@GOTNTPOFF(%r12)
3445 larl %r1,foo@INDNTPOFF
3446 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3447 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3450 tls_as_opt="-m64 -Aesame --fatal-warnings"
3452 sh-*-* | sh[123456789lbe]*-*-*)
3454 .section ".tdata","awT",@progbits
3464 tls_as_opt=--fatal-warnings
3468 sparc*-sun-solaris2.*)
3475 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3477 .section ".tdata",#alloc,#write,#tls'
3482 .section ".tdata","awT",@progbits'
3485 tls_as_opt="-32 --fatal-warnings"
3487 conftest_s="$conftest_s
3490 sethi %tgd_hi22(foo), %o0
3491 add %o0, %tgd_lo10(foo), %o1
3492 add %l7, %o1, %o0, %tgd_add(foo)
3493 call __tls_get_addr, %tgd_call(foo)
3494 sethi %tldm_hi22(foo), %l1
3495 add %l1, %tldm_lo10(foo), %l2
3496 add %l7, %l2, %o0, %tldm_add(foo)
3497 call __tls_get_addr, %tldm_call(foo)
3498 sethi %tldo_hix22(foo), %l3
3499 xor %l3, %tldo_lox10(foo), %l4
3500 add %o0, %l4, %l5, %tldo_add(foo)
3501 sethi %tie_hi22(foo), %o3
3502 add %o3, %tie_lo10(foo), %o3
3503 ld [%l7 + %o3], %o2, %tie_ld(foo)
3504 add %g7, %o2, %o4, %tie_add(foo)
3505 sethi %tle_hix22(foo), %l1
3506 xor %l1, %tle_lox10(foo), %o5
3507 ld [%g7 + %o5], %o1"
3511 .section ".tdata","awT",@progbits
3514 addli r0, zero, tls_gd(foo)
3515 auli r0, zero, tls_gd_ha16(foo)
3516 addli r0, r0, tls_gd_lo16(foo)
3518 addli r0, zero, tls_ie(foo)
3519 auli r0, r0, tls_ie_ha16(foo)
3520 addli r0, r0, tls_ie_lo16(foo)'
3523 tls_as_opt="--fatal-warnings"
3527 .section ".tdata","awT",@progbits
3530 shl16insli r0, zero, hw0_last_tls_gd(foo)
3531 shl16insli r0, zero, hw1_last_tls_gd(foo)
3532 shl16insli r0, r0, hw0_tls_gd(foo)
3534 shl16insli r0, zero, hw1_last_tls_ie(foo)
3535 shl16insli r0, r0, hw0_tls_ie(foo)'
3538 tls_as_opt="--fatal-warnings"
3542 .section ".tdata","awT",@progbits
3545 movi a8, foo@TLSFUNC
3546 movi a10, foo@TLSARG
3547 callx8.tls a8, foo@TLSCALL'
3554 if test "x$enable_tls" = xno ; then
3555 : # TLS explicitly disabled.
3556 elif test "x$enable_tls" = xyes ; then
3557 set_have_as_tls=yes # TLS explicitly enabled.
3558 elif test -z "$tls_first_major"; then
3559 : # If we don't have a check, assume no support.
3561 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3562 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3563 [set_have_as_tls=yes])
3565 if test $set_have_as_tls = yes ; then
3566 AC_DEFINE(HAVE_AS_TLS, 1,
3567 [Define if your assembler and linker support thread-local storage.])
3570 # Target-specific assembler checks.
3572 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3573 gcc_cv_ld_static_dynamic=no
3574 gcc_cv_ld_static_option='-Bstatic'
3575 gcc_cv_ld_dynamic_option='-Bdynamic'
3576 if test $in_tree_ld = yes ; then
3577 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3578 gcc_cv_ld_static_dynamic=yes
3580 elif test x$gcc_cv_ld != x; then
3581 # Check if linker supports -Bstatic/-Bdynamic option
3582 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3583 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3584 gcc_cv_ld_static_dynamic=yes
3587 # AIX ld uses -b flags
3588 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3589 gcc_cv_ld_static_dynamic=yes
3590 gcc_cv_ld_static_option="-bstatic"
3591 gcc_cv_ld_dynamic_option="-bdynamic"
3593 # HP-UX ld uses -a flags to select between shared and archive.
3595 if test x"$gnu_ld" = xno; then
3596 gcc_cv_ld_static_dynamic=yes
3597 gcc_cv_ld_static_option="-aarchive_shared"
3598 gcc_cv_ld_dynamic_option="-adefault"
3601 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3603 gcc_cv_ld_static_dynamic=yes
3608 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3609 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3610 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3611 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3612 [Define to the linker option to disable use of shared objects.])
3613 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3614 [Define to the linker option to enable use of shared objects.])
3616 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3618 if test x"$demangler_in_ld" = xyes; then
3619 AC_MSG_CHECKING(linker --demangle support)
3620 gcc_cv_ld_demangle=no
3621 if test $in_tree_ld = yes; then
3622 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3623 gcc_cv_ld_demangle=yes
3625 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3626 # Check if the GNU linker supports --demangle option
3627 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3628 gcc_cv_ld_demangle=yes
3631 if test x"$gcc_cv_ld_demangle" = xyes; then
3632 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3633 [Define if your linker supports --demangle option.])
3635 AC_MSG_RESULT($gcc_cv_ld_demangle)
3638 AC_MSG_CHECKING(linker plugin support)
3640 if test -f liblto_plugin.la; then
3641 save_ld_ver="$ld_ver"
3642 save_ld_vers_major="$ld_vers_major"
3643 save_ld_vers_minor="$ld_vers_minor"
3644 save_ld_is_gold="$ld_is_gold"
3648 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3650 # FIXME: ld_is_gold?
3651 ld_vers_major="$gcc_cv_gld_major_version"
3652 ld_vers_minor="$gcc_cv_gld_minor_version"
3654 # Determine plugin linker version.
3655 # FIXME: Partial duplicate from above, generalize.
3657 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3658 if echo "$ld_ver" | grep GNU > /dev/null; then
3659 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3661 ld_vers=`echo $ld_ver | sed -n \
3662 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3664 ld_vers=`echo $ld_ver | sed -n \
3665 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3667 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3668 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3673 # Determine plugin support.
3674 if echo "$ld_ver" | grep GNU > /dev/null; then
3675 # Require GNU ld or gold 2.21+ for plugin support by default.
3676 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3678 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3679 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3684 ld_ver="$save_ld_ver"
3685 ld_vers_major="$save_ld_vers_major"
3686 ld_vers_minor="$save_ld_vers_minor"
3687 ld_is_gold="$save_ld_is_gold"
3689 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3690 [Define to the level of your linker's plugin support.])
3691 AC_MSG_RESULT($gcc_cv_lto_plugin)
3693 # Target OS-specific assembler checks.
3695 case "$target_os" in
3697 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3698 gcc_cv_as_mmacosx_version_min,,
3699 [-mmacosx-version-min=10.1], [.text],,
3700 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3701 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3705 # Target CPU-specific assembler checks.
3709 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3710 [-mabi=lp64], [.text],,,)
3711 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3712 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3713 [Define if your assembler supports the -mabi option.])
3715 if test x$with_abi = xilp32; then
3716 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3717 Upgrade the Assembler.])
3719 if test x"$with_multilib_list" = xdefault; then
3720 TM_MULTILIB_CONFIG=lp64
3722 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3723 for aarch64_multilib in ${aarch64_multilibs}; do
3724 case ${aarch64_multilib} in
3726 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3727 Upgrade the Assembler.])
3735 # Check if we have binutils support for relocations types needed by -fpic
3736 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3739 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3740 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3741 [Define if your assembler supports relocs needed by -fpic.])])
3742 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3743 AC_ARG_ENABLE(fix-cortex-a53-835769,
3745 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3746 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3747 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3748 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3753 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3758 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3759 Valid choices are 'yes' and 'no'.])
3765 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3766 AC_ARG_ENABLE(fix-cortex-a53-843419,
3768 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3769 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3770 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3771 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3776 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3781 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3782 Valid choices are 'yes' and 'no'.])
3790 # All TARGET_ABI_OSF targets.
3791 alpha*-*-linux* | alpha*-*-*bsd*)
3792 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3793 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3796 extbl $3, $2, $3 !lituse_bytoff!1
3797 ldq $2, a($29) !literal!1
3798 ldq $4, b($29) !literal!2
3799 ldq_u $3, 0($2) !lituse_base!1
3800 ldq $27, f($29) !literal!5
3801 jsr $26, ($27), f !lituse_jsr!5
3802 ldah $29, 0($26) !gpdisp!3
3803 lda $0, c($29) !gprel
3804 ldah $1, d($29) !gprelhigh
3805 lda $1, d($1) !gprellow
3806 lda $29, 0($29) !gpdisp!3],,
3807 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3808 [Define if your assembler supports explicit relocations.])])
3809 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3810 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3813 ldq $27, a($29) !literal!1
3814 jsr $26, ($27), a !lituse_jsrdirect!1],,
3815 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3816 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3820 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3821 [--mlink-relax], [.text],,
3822 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3823 [Define if your avr assembler supports --mlink-relax option.])])
3825 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3827 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3828 [Define if your avr assembler supports -mrmw option.])])
3830 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3831 gcc_cv_as_avr_mgccisr,,
3837 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3838 [Define if your avr assembler supports -mgcc-isr option.])])
3840 # Check how default linker description file implements .rodata for
3841 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3842 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3843 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3844 cat > conftest.s <<EOF
3845 .section .rodata,"a",@progbits
3847 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3852 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3853 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3854 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3855 if test -s conftest.nm
3857 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3859 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3860 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3862 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3863 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3864 cat conftest.nm >&AS_MESSAGE_LOG_FD
3865 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3866 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3869 AC_MSG_RESULT(test failed)
3870 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
3871 cat conftest.s >&AS_MESSAGE_LOG_FD
3872 AC_MSG_WARN([[see `config.log' for details]])
3874 rm -f conftest.s conftest.o conftest.elf conftest.nm
3878 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3879 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3880 [-no-mul-bug-abort], [.text],,
3881 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3882 [Define if your assembler supports the -no-mul-bug-abort option.])])
3886 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3887 [.register %g2, #scratch],,
3888 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3889 [Define if your assembler supports .register.])])
3891 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3893 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3894 [Define if your assembler supports -relax option.])])
3896 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3897 gcc_cv_as_sparc_gotdata_op,,
3904 sethi %gdop_hix22(foo), %g1
3905 xor %g1, %gdop_lox10(foo), %g1
3906 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3907 [if test x$gcc_cv_ld != x \
3908 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3909 if test x$gcc_cv_objdump != x; then
3910 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3911 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3912 gcc_cv_as_sparc_gotdata_op=no
3914 gcc_cv_as_sparc_gotdata_op=yes
3919 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3920 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3922 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3923 gcc_cv_as_sparc_ua_pcrel,,
3931 .uaword %r_disp32(foo)],
3932 [if test x$gcc_cv_ld != x \
3933 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3934 gcc_cv_as_sparc_ua_pcrel=yes
3937 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3938 [Define if your assembler and linker support unaligned PC relative relocs.])
3940 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3941 gcc_cv_as_sparc_ua_pcrel_hidden,,
3946 .uaword %r_disp32(foo)
3947 .byte 0x32, 0x33, 0x34
3952 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3953 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3954 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3955 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3956 if $gcc_cv_objdump -R conftest 2> /dev/null \
3957 | grep 'DISP32' > /dev/null 2>&1; then
3960 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3964 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3965 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3966 ]) # unaligned pcrel relocs
3968 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3969 gcc_cv_as_sparc_offsetable_lo10,,
3972 or %g1, %lo(ab) + 12, %g1
3973 or %g1, %lo(ab + 12), %g1],
3974 [if test x$gcc_cv_objdump != x \
3975 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3976 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3977 gcc_cv_as_sparc_offsetable_lo10=yes
3979 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3980 [Define if your assembler supports offsetable %lo().])])
3982 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3983 gcc_cv_as_sparc_fmaf,,
3986 .register %g2, #scratch
3987 .register %g3, #scratch
3989 fmaddd %f0, %f2, %f4, %f6
3990 addxccc %g1, %g2, %g3
3991 fsrl32 %f2, %f4, %f8
3992 fnaddd %f10, %f12, %f14],,
3993 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3994 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3996 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3997 gcc_cv_as_sparc_sparc4,,
4000 .register %g2, #scratch
4001 .register %g3, #scratch
4004 1: cwbneg %g2, %g3, 1f
4007 aes_kexpand0 %f4, %f6, %f8
4008 des_round %f38, %f40, %f42, %f44
4009 camellia_f %f54, %f56, %f58, %f60
4010 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4011 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4012 [Define if your assembler supports SPARC4 instructions.])])
4014 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4015 gcc_cv_as_sparc_sparc5,,
4018 .register %g2, #scratch
4019 .register %g3, #scratch
4022 fpadd8 %f0, %f2, %f4],,
4023 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4024 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4026 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4027 gcc_cv_as_sparc_sparc6,,
4030 .register %g2, #scratch
4031 .register %g3, #scratch
4034 fpsll64x %f0, %f2, %f4],,
4035 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4036 [Define if your assembler supports SPARC6 instructions.])])
4038 gcc_GAS_CHECK_FEATURE([LEON instructions],
4039 gcc_cv_as_sparc_leon,,
4042 .register %g2, #scratch
4043 .register %g3, #scratch
4047 casa [[%g2]] 0xb, %g3, %g1],,
4048 [AC_DEFINE(HAVE_AS_LEON, 1,
4049 [Define if your assembler supports LEON instructions.])])
4053 i[34567]86-*-* | x86_64-*-*)
4057 # Full C++ conformance when using a shared libstdc++-v3 requires some
4058 # support from the Cygwin DLL, which in more recent versions exports
4059 # wrappers to aid in interposing and redirecting operators new, delete,
4060 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4061 # are configuring for a version of Cygwin that exports the wrappers.
4062 if test x$host = x$target && test x$host_cpu = xi686; then
4063 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4065 # Can't check presence of libc functions during cross-compile, so
4066 # we just have to assume we're building for an up-to-date target.
4067 gcc_ac_cygwin_dll_wrappers=yes
4069 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4070 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4071 [Define if you want to generate code by default that assumes that the
4072 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4075 cygwin* | pe | mingw32*)
4076 # Recent binutils allows the three-operand form of ".comm" on PE. This
4077 # definition is used unconditionally to initialise the default state of
4078 # the target option variable that governs usage of the feature.
4079 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4080 [2,19,52],,[.comm foo,1,32])
4081 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4082 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4083 [Define if your assembler supports specifying the alignment
4084 of objects allocated using the GAS .comm command.])
4085 # Used for DWARF 2 in PE
4086 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4087 gcc_cv_as_ix86_pe_secrel32,
4093 [if test x$gcc_cv_ld != x \
4094 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4095 gcc_cv_as_ix86_pe_secrel32=yes
4098 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4099 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4100 # Test if the assembler supports the extended form of the .section
4101 # directive that specifies section alignment. LTO support uses this,
4102 # but normally only after installation, so we warn but don't fail the
4103 # configure if LTO is enabled but the assembler does not support it.
4104 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4105 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4106 if test x$gcc_cv_as_section_has_align != xyes; then
4107 case ",$enable_languages," in
4109 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4116 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4117 [-xbrace_comment=no], [.text],,
4118 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4119 [Define if your assembler supports -xbrace_comment option.])])
4121 # Test if the assembler supports the section flag 'e' for specifying
4122 # an excluded section.
4123 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4124 [2,22,51], [--fatal-warnings],
4127 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4128 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4129 [Define if your assembler supports specifying the section flag e.])
4131 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4132 gcc_cv_as_ix86_filds,,,
4133 [filds (%ebp); fists (%ebp)],,
4134 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4135 [Define if your assembler uses filds and fists mnemonics.])])
4137 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4138 gcc_cv_as_ix86_fildq,,,
4139 [fildq (%ebp); fistpq (%ebp)],,
4140 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4141 [Define if your assembler uses fildq and fistq mnemonics.])])
4143 gcc_GAS_CHECK_FEATURE([cmov syntax],
4144 gcc_cv_as_ix86_cmov_sun_syntax,,,
4145 [cmovl.l %edx, %eax],,
4146 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4147 [Define if your assembler supports the Sun syntax for cmov.])])
4149 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4150 gcc_cv_as_ix86_ffreep,,,
4152 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4153 [Define if your assembler supports the ffreep mnemonic.])])
4155 gcc_GAS_CHECK_FEATURE([.quad directive],
4156 gcc_cv_as_ix86_quad,,,
4158 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4159 [Define if your assembler supports the .quad directive.])])
4161 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4162 gcc_cv_as_ix86_sahf,,,
4165 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4166 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4168 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4169 gcc_cv_as_ix86_interunit_movq,,,
4173 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4174 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4175 [Define if your assembler supports interunit movq mnemonic.])
4177 gcc_GAS_CHECK_FEATURE([hle prefixes],
4178 gcc_cv_as_ix86_hle,,,
4179 [lock xacquire cmpxchg %esi, (%ecx)],,
4180 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4181 [Define if your assembler supports HLE prefixes.])])
4183 gcc_GAS_CHECK_FEATURE([swap suffix],
4184 gcc_cv_as_ix86_swap,,,
4185 [movl.s %esp, %ebp],,
4186 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4187 [Define if your assembler supports the swap suffix.])])
4189 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4190 gcc_cv_as_ix86_diff_sect_delta,,,
4198 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4199 [Define if your assembler supports the subtraction of symbols in different sections.])])
4201 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4202 gcc_cv_as_ix86_rep_lock_prefix,,,
4208 lock addl %edi, (%eax,%esi)
4209 lock orl $0, (%esp)],,
4210 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4211 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4213 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4214 gcc_cv_as_ix86_ud2,,,
4216 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4217 [Define if your assembler supports the 'ud2' mnemonic.])])
4219 # Enforce 32-bit output with gas and gld.
4220 if test x$gas = xyes; then
4221 as_ix86_gas_32_opt="--32"
4223 if echo "$ld_ver" | grep GNU > /dev/null; then
4224 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4225 ld_ix86_gld_32_opt="-melf_i386_sol2"
4227 ld_ix86_gld_32_opt="-melf_i386"
4231 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4232 gcc_cv_as_ix86_tlsgdplt,,
4233 [$as_ix86_gas_32_opt],
4234 [call tls_gd@tlsgdplt],
4235 [if test x$gcc_cv_ld != x \
4236 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4237 gcc_cv_as_ix86_tlsgdplt=yes
4240 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4241 [Define if your assembler and linker support @tlsgdplt.])])
4244 .section .tdata,"aw'$tls_section_flag'",@progbits
4246 .section .text,"ax",@progbits
4247 call tls_ld@tlsldmplt'
4249 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4250 gcc_cv_as_ix86_tlsldmplt,,
4251 [$as_ix86_gas_32_opt],
4253 [if test x$gcc_cv_ld != x \
4254 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4255 gcc_cv_as_ix86_tlsldmplt=yes
4258 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4259 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4260 [Define to 1 if your assembler and linker support @tlsldmplt.])
4263 .section .text,"ax",@progbits
4265 .type _start, @function
4267 leal value@tlsldm(%ebx), %eax
4268 call ___tls_get_addr@plt
4270 .section .tdata,"aw'$tls_section_flag'",@progbits
4271 .type value, @object
4273 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4274 gcc_cv_as_ix86_tlsldm,,
4275 [$as_ix86_gas_32_opt],
4277 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4278 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4279 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4280 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4281 gcc_cv_as_ix86_tlsldm=yes
4285 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4286 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4287 [Define to 1 if your assembler and linker support @tlsldm.])
4298 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4299 gcc_cv_as_ix86_got32x,,
4300 [$as_ix86_gas_32_opt],
4302 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4303 && test x$gcc_cv_readelf != x \
4304 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4305 | grep R_386_GOT32X > /dev/null 2>&1 \
4306 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4307 if $gcc_cv_objdump -dw conftest 2>&1 \
4308 | grep 0xffffff > /dev/null 2>&1; then
4309 gcc_cv_as_ix86_got32x=no
4311 gcc_cv_as_ix86_got32x=yes
4315 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4316 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4317 [Define 0/1 if your assembler and linker support @GOT.])
4319 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4320 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4321 [$as_ix86_gas_32_opt],
4327 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4328 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4329 [Define true if the assembler supports '.long foo@GOTOFF'.])
4332 .section .text,"ax",@progbits
4334 .type _start, @function
4336 leal ld@tlsldm(%ecx), %eax
4337 call *___tls_get_addr@GOT(%ecx)
4338 leal gd@tlsgd(%ecx), %eax
4339 call *___tls_get_addr@GOT(%ecx)
4341 .section .tdata,"aw'$tls_section_flag'",@progbits
4349 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4350 gcc_cv_as_ix86_tls_get_addr_via_got,,
4351 [$as_ix86_gas_32_opt],
4353 [if test x$gcc_cv_ld != x \
4354 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4355 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4358 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4359 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4360 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4364 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4365 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4367 addl r15 = @ltoffx(x#), gp
4369 ld8.mov r16 = [[r15]], x#],,
4370 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4371 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4379 gcc_GAS_CHECK_FEATURE([.machine directive support],
4380 gcc_cv_as_machine_directive,,,
4381 [ .machine ppc7400])
4382 if test x$gcc_cv_as_machine_directive != xyes; then
4383 echo "*** This target requires an assembler supporting \".machine\"" >&2
4384 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4385 test x$build = x$target && exit 1
4391 *-*-aix*) conftest_s=' .machine "pwr5"
4394 *-*-darwin*) conftest_s=' .text
4396 *) conftest_s=' .machine power4
4401 gcc_GAS_CHECK_FEATURE([mfcr field support],
4402 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4404 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4405 [Define if your assembler supports mfcr field.])])
4408 *-*-aix*) conftest_s=' .machine "pwr5"
4411 *) conftest_s=' .machine power5
4416 gcc_GAS_CHECK_FEATURE([popcntb support],
4417 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4419 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4420 [Define if your assembler supports popcntb field.])])
4423 *-*-aix*) conftest_s=' .machine "pwr5x"
4426 *) conftest_s=' .machine power5
4431 gcc_GAS_CHECK_FEATURE([fp round support],
4432 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4434 [AC_DEFINE(HAVE_AS_FPRND, 1,
4435 [Define if your assembler supports fprnd.])])
4438 *-*-aix*) conftest_s=' .machine "pwr6"
4441 *) conftest_s=' .machine power6
4446 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4447 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4449 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4450 [Define if your assembler supports mffgpr and mftgpr.])])
4453 *-*-aix*) conftest_s=' .csect .text[[PR]]
4455 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4459 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4460 *) conftest_s=' .text
4462 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4465 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4466 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4468 [AC_DEFINE(HAVE_AS_REL16, 1,
4469 [Define if your assembler supports R_PPC_REL16 relocs.])])
4472 *-*-aix*) conftest_s=' .machine "pwr6"
4475 *) conftest_s=' .machine power6
4480 gcc_GAS_CHECK_FEATURE([compare bytes support],
4481 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4483 [AC_DEFINE(HAVE_AS_CMPB, 1,
4484 [Define if your assembler supports cmpb.])])
4487 *-*-aix*) conftest_s=' .machine "pwr6"
4490 *) conftest_s=' .machine power6
4495 gcc_GAS_CHECK_FEATURE([decimal float support],
4496 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4498 [AC_DEFINE(HAVE_AS_DFP, 1,
4499 [Define if your assembler supports DFP instructions.])])
4502 *-*-aix*) conftest_s=' .machine "pwr7"
4505 *) conftest_s=' .machine power7
4510 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4511 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4513 [AC_DEFINE(HAVE_AS_VSX, 1,
4514 [Define if your assembler supports VSX instructions.])])
4517 *-*-aix*) conftest_s=' .machine "pwr7"
4520 *) conftest_s=' .machine power7
4525 gcc_GAS_CHECK_FEATURE([popcntd support],
4526 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4528 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4529 [Define if your assembler supports POPCNTD instructions.])])
4532 *-*-aix*) conftest_s=' .machine "pwr8"
4533 .csect .text[[PR]]';;
4534 *) conftest_s=' .machine power8
4538 gcc_GAS_CHECK_FEATURE([power8 support],
4539 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4541 [AC_DEFINE(HAVE_AS_POWER8, 1,
4542 [Define if your assembler supports POWER8 instructions.])])
4545 *-*-aix*) conftest_s=' .machine "pwr9"
4546 .csect .text[[PR]]';;
4547 *) conftest_s=' .machine power9
4551 gcc_GAS_CHECK_FEATURE([power9 support],
4552 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4554 [AC_DEFINE(HAVE_AS_POWER9, 1,
4555 [Define if your assembler supports POWER9 instructions.])])
4558 *-*-aix*) conftest_s=' .csect .text[[PR]]
4560 *) conftest_s=' .text
4564 gcc_GAS_CHECK_FEATURE([lwsync support],
4565 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4567 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4568 [Define if your assembler supports LWSYNC instructions.])])
4571 *-*-aix*) conftest_s=' .machine "476"
4574 *) conftest_s=' .machine "476"
4579 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4580 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4582 [AC_DEFINE(HAVE_AS_DCI, 1,
4583 [Define if your assembler supports the DCI/ICI instructions.])])
4585 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4586 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4587 [.gnu_attribute 4,1],,
4588 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4589 [Define if your assembler supports .gnu_attribute.])])
4591 gcc_GAS_CHECK_FEATURE([tls marker support],
4592 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4593 [ bl __tls_get_addr(x@tlsgd)],,
4594 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4595 [Define if your assembler supports arg info for __tls_get_addr.])])
4597 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4598 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4599 [ .reloc .,R_PPC64_ENTRY; nop],,
4600 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4601 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4605 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4606 gcc_cv_as_aix_ref, [2,21,0],,
4607 [ .csect stuff[[rw]]
4613 [AC_DEFINE(HAVE_AS_REF, 1,
4614 [Define if your assembler supports .ref])])
4616 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4617 gcc_cv_as_aix_dwloc, [2,21,0],,
4622 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4623 [Define if your assembler supports AIX debug frame section label reference.])])
4629 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4630 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4631 [ lw $4,%gp_rel(foo)($4)],,
4632 [if test x$target_cpu_default = x
4633 then target_cpu_default=MASK_EXPLICIT_RELOCS
4634 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4637 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4638 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4639 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4640 [Define if the assembler understands -mno-shared.])])
4642 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4643 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4644 [.gnu_attribute 4,1],,
4645 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4646 [Define if your assembler supports .gnu_attribute.])])
4648 gcc_GAS_CHECK_FEATURE([.module support],
4649 gcc_cv_as_mips_dot_module,,[-32],
4652 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4653 [Define if your assembler supports .module.])])
4654 if test x$gcc_cv_as_mips_dot_module = xno \
4655 && test x$with_fp_32 != x; then
4657 [Requesting --with-fp-32= requires assembler support for .module.])
4660 gcc_GAS_CHECK_FEATURE([.micromips support],
4661 gcc_cv_as_micromips_support,,[--fatal-warnings],
4663 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4664 [Define if your assembler supports the .set micromips directive])])
4666 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4667 gcc_cv_as_mips_dtprelword, [2,18,0],,
4668 [.section .tdata,"awT",@progbits
4672 .dtprelword x+0x8000],,
4673 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4674 [Define if your assembler supports .dtprelword.])])
4676 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4677 gcc_cv_as_mips_dspr1_mult,,,
4687 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4688 [Define if your assembler supports DSPR1 mult.])])
4690 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4691 gcc_cv_as_ld_jalr_reloc=no
4692 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4693 if test $in_tree_ld = yes ; then
4694 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4695 && test $in_tree_ld_is_elf = yes; then
4696 gcc_cv_as_ld_jalr_reloc=yes
4698 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4699 echo ' .ent x' > conftest.s
4700 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4701 echo ' lw $25,%call16(y)($28)' >> conftest.s
4702 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4703 echo '1: jalr $25' >> conftest.s
4704 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4705 echo '1: jalr $25' >> conftest.s
4706 echo ' .end x' >> conftest.s
4707 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4708 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4709 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4710 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4711 gcc_cv_as_ld_jalr_reloc=yes
4717 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4718 if test x$target_cpu_default = x; then
4719 target_cpu_default=MASK_RELAX_PIC_CALLS
4721 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4724 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4726 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4727 [gcc_cv_ld_mips_personality_relaxation],
4728 [gcc_cv_ld_mips_personality_relaxation=no
4729 if test $in_tree_ld = yes ; then
4730 if test "$gcc_cv_gld_major_version" -eq 2 \
4731 -a "$gcc_cv_gld_minor_version" -ge 21 \
4732 -o "$gcc_cv_gld_major_version" -gt 2; then
4733 gcc_cv_ld_mips_personality_relaxation=yes
4735 elif test x$gcc_cv_as != x \
4736 -a x$gcc_cv_ld != x \
4737 -a x$gcc_cv_readelf != x ; then
4738 cat > conftest.s <<EOF
4740 .cfi_personality 0x80,indirect_ptr
4747 .section .data,"aw",@progbits
4751 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4752 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4753 if $gcc_cv_readelf -d conftest 2>&1 \
4754 | grep TEXTREL > /dev/null 2>&1; then
4756 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4757 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4760 gcc_cv_ld_mips_personality_relaxation=yes
4764 rm -f conftest.s conftest.o conftest])
4765 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4766 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4767 [Define if your linker can relax absolute .eh_frame personality
4768 pointers into PC-relative form.])
4771 gcc_GAS_CHECK_FEATURE([-mnan= support],
4772 gcc_cv_as_mips_nan,,
4774 [AC_DEFINE(HAVE_AS_NAN, 1,
4775 [Define if the assembler understands -mnan=.])])
4776 if test x$gcc_cv_as_mips_nan = xno \
4777 && test x$with_nan != x; then
4779 [Requesting --with-nan= requires assembler support for -mnan=])
4783 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4784 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4785 [.gnu_attribute 8,1],,
4786 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4787 [Define if your assembler supports .gnu_attribute.])])
4788 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4789 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4794 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4795 [Define if your assembler supports .machine and .machinemode.])])
4796 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4797 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4798 [ .machine z13+vx ],,
4799 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4800 [Define if your assembler supports architecture modifiers.])])
4804 # Mips and HP-UX need the GNU assembler.
4805 # Linux on IA64 might be able to use the Intel assembler.
4808 mips*-*-* | *-*-hpux* )
4809 if test x$gas_flag = xyes \
4810 || test x"$host" != x"$build" \
4811 || test ! -x "$gcc_cv_as" \
4812 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4815 echo "*** This configuration requires the GNU assembler" >&2
4821 # ??? Not all targets support dwarf2 debug_line, even within a version
4822 # of gas. Moreover, we need to emit a valid instruction to trigger any
4823 # info to the output file. So, as supported targets are added to gas 2.11,
4824 # add some instruction here to (also) show we expect this might work.
4825 # ??? Once 2.11 is released, probably need to add first known working
4826 # version to the per-target configury.
4828 aarch64 | alpha | arc | arm | avr | bfin | cris | i386 | m32c | m68k \
4829 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4830 | tilegx | tilepro | visium | xstormy16 | xtensa)
4840 if test x"$insn" != x; then
4842 .file 1 \"conftest.s\"
4845 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4846 gcc_cv_as_dwarf2_debug_line,
4847 [elf,2,11,0],, [$conftest_s],
4848 [if test x$gcc_cv_objdump != x \
4849 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4850 | grep debug_line > /dev/null 2>&1; then
4851 gcc_cv_as_dwarf2_debug_line=yes
4854 # The .debug_line file table must be in the exact order that
4855 # we specified the files, since these indices are also used
4856 # by DW_AT_decl_file. Approximate this test by testing if
4857 # the assembler bitches if the same index is assigned twice.
4858 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4859 gcc_cv_as_dwarf2_file_buggy,,,
4863 if test $gcc_cv_as_dwarf2_debug_line = yes \
4864 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4865 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4866 [Define if your assembler supports dwarf2 .file/.loc directives,
4867 and preserves file table indices exactly as given.])
4870 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4871 gcc_cv_as_gdwarf2_flag,
4872 [elf,2,11,0], [--gdwarf2], [$insn],,
4873 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4874 [Define if your assembler supports the --gdwarf2 option.])])
4876 gcc_GAS_CHECK_FEATURE([--gstabs option],
4877 gcc_cv_as_gstabs_flag,
4878 [elf,2,11,0], [--gstabs], [$insn],,
4879 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4880 [Define if your assembler supports the --gstabs option.])])
4882 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4883 gcc_cv_as_debug_prefix_map_flag,
4884 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4885 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4886 [Define if your assembler supports the --debug-prefix-map option.])])
4889 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4890 gcc_cv_as_compress_debug,,,,
4891 [# gas compiled without zlib cannot compress debug sections and warns
4892 # about it, but still exits successfully. So check for this, too.
4893 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4895 gcc_cv_as_compress_debug=0
4896 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4897 # defaulting to the ELF gABI format.
4898 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4900 gcc_cv_as_compress_debug=2
4901 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4902 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4903 # Before binutils 2.26, gas only supported --compress-debug-options and
4904 # emitted the traditional GNU format.
4905 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4907 gcc_cv_as_compress_debug=1
4908 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4909 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4911 gcc_cv_as_compress_debug=0
4913 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4914 [Define to the level of your assembler's compressed debug section support.])
4915 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4916 [Define to the assembler option to enable compressed debug sections.])
4917 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4918 [Define to the assembler option to disable compressed debug sections.])
4920 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4923 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4924 [Define if your assembler supports .lcomm with an alignment field.])])
4926 if test x$with_sysroot = x && test x$host = x$target \
4927 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4928 && test "$prefix" != "NONE"; then
4929 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4930 [Define to PREFIX/include if cpp should also search that directory.])
4933 # Determine the version of glibc, if any, used on the target.
4934 AC_MSG_CHECKING([for target glibc version])
4935 AC_ARG_WITH([glibc-version],
4936 [AS_HELP_STRING([--with-glibc-version=M.N],
4937 [assume GCC used with glibc version M.N or later])], [
4938 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4939 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4940 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4942 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4944 glibc_version_major=0
4945 glibc_version_minor=0
4946 [if test -f $target_header_dir/features.h \
4947 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4948 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4949 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4950 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4952 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4953 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4954 [GNU C Library major version number used on the target, or 0.])
4955 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4956 [GNU C Library minor version number used on the target, or 0.])
4958 AC_ARG_ENABLE(gnu-unique-object,
4959 [AS_HELP_STRING([--enable-gnu-unique-object],
4960 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4961 [case $enable_gnu_unique_object in
4963 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4964 Valid choices are 'yes' and 'no'.]) ;;
4966 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4968 [.type foo, '$target_type_format_char'gnu_unique_object],,
4969 # We need to unquote above to to use the definition from config.gcc.
4970 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4971 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4973 if test x$enable_gnu_unique_object = xyes; then
4974 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4975 [Define if your assembler supports @gnu_unique_object.])
4978 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4979 [gcc_cv_as_line_zero],
4980 [gcc_cv_as_line_zero=no
4981 if test $in_tree_gas = yes; then
4982 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4983 elif test "x$gcc_cv_as" != x; then
4984 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4985 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4986 test "x`cat conftest.out`" = x
4988 gcc_cv_as_line_zero=yes
4990 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4991 cat conftest.s >&AS_MESSAGE_LOG_FD
4992 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4993 cat conftest.out >&AS_MESSAGE_LOG_FD
4995 rm -f conftest.o conftest.s conftest.out
4997 if test "x$gcc_cv_as_line_zero" = xyes; then
4998 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4999 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5002 AC_MSG_CHECKING(support for thin archives)
5003 thin_archive_support=no
5004 echo 'int main (void) { return 0; }' > conftest.c
5005 if ($AR --version | sed 1q | grep "GNU ar" \
5006 && $CC $CFLAGS -c conftest.c \
5007 && $AR rcT conftest.a conftest.o \
5008 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5009 thin_archive_support=yes
5011 rm -f conftest.c conftest.o conftest.a conftest
5012 AC_MSG_RESULT($thin_archive_support)
5013 AC_SUBST(thin_archive_support)
5015 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5016 gcc_cv_ld_eh_frame_hdr=no
5017 if test $in_tree_ld = yes ; then
5018 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5019 && test $in_tree_ld_is_elf = yes; then
5020 gcc_cv_ld_eh_frame_hdr=yes
5022 elif test x$gcc_cv_ld != x; then
5023 if echo "$ld_ver" | grep GNU > /dev/null; then
5024 # Check if linker supports --eh-frame-hdr option
5025 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5026 gcc_cv_ld_eh_frame_hdr=yes
5031 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5032 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5033 gcc_cv_ld_eh_frame_hdr=yes
5039 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5040 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5041 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5042 [Define if your linker supports .eh_frame_hdr.])
5044 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5046 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5047 gcc_cv_ld_eh_frame_ciev3=no
5048 if test $in_tree_ld = yes ; then
5049 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5050 && test $in_tree_ld_is_elf = yes; then
5051 gcc_cv_ld_eh_frame_ciev3=yes
5053 elif test x$gcc_cv_ld != x; then
5054 if echo "$ld_ver" | grep GNU > /dev/null; then
5055 gcc_cv_ld_eh_frame_ciev3=yes
5056 if test 0"$ld_date" -lt 20040513; then
5057 if test -n "$ld_date"; then
5058 # If there was date string, but was earlier than 2004-05-13, fail
5059 gcc_cv_ld_eh_frame_ciev3=no
5060 elif test "$ld_vers_major" -lt 2; then
5061 gcc_cv_ld_eh_frame_ciev3=no
5062 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5063 gcc_cv_ld_eh_frame_ciev3=no
5069 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5070 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5071 gcc_cv_ld_eh_frame_ciev3=yes
5077 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5078 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5079 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5080 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5082 AC_MSG_CHECKING(linker position independent executable support)
5084 if test $in_tree_ld = yes ; then
5086 # Full PIE support on Solaris was only introduced in gld 2.26.
5087 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5088 *) gcc_gld_pie_min_version=15 ;;
5090 if test "$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 \
5091 && test $in_tree_ld_is_elf = yes; then
5094 elif test x$gcc_cv_ld != x; then
5095 # Check if linker supports -pie option
5096 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5100 if echo "$ld_ver" | grep GNU > /dev/null \
5101 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5108 *-*-solaris2.1[[1-9]]*)
5109 # Solaris 11.3 added PIE support.
5110 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5117 if test x"$gcc_cv_ld_pie" = xyes; then
5118 AC_DEFINE(HAVE_LD_PIE, 1,
5119 [Define if your linker supports PIE option.])
5121 AC_MSG_RESULT($gcc_cv_ld_pie)
5123 AC_MSG_CHECKING(linker PIE support with copy reloc)
5124 gcc_cv_ld_pie_copyreloc=no
5125 if test $gcc_cv_ld_pie = yes ; then
5126 if test $in_tree_ld = yes ; then
5127 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5128 gcc_cv_ld_pie_copyreloc=yes
5130 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5131 # Check if linker supports -pie option with copy reloc
5133 i?86-*-linux* | x86_64-*-linux*)
5134 cat > conftest1.s <<EOF
5137 .type a_glob, @object
5142 cat > conftest2.s <<EOF
5145 .type main, @function
5147 movl %eax, a_glob(%rip)
5150 .section .data.rel,"aw",@progbits
5155 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5156 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5157 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5158 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5159 gcc_cv_ld_pie_copyreloc=yes
5161 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5166 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5167 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5168 [Define 0/1 if your linker supports -pie option with copy reloc.])
5169 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5171 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5172 gcc_cv_ld_eh_gc_sections=no
5173 if test $in_tree_ld = yes ; then
5174 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5175 && test $in_tree_ld_is_elf = yes; then
5176 gcc_cv_ld_eh_gc_sections=yes
5178 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5179 cat > conftest.s <<EOF
5182 .type _start, @function
5185 .size _start, .-_start
5186 .section .text.foo,"ax",@progbits
5187 .type foo, @function
5191 .section .gcc_except_table.foo,"a",@progbits
5194 .section .eh_frame,"a",@progbits
5197 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5198 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5199 | grep "gc-sections option ignored" > /dev/null; then
5200 gcc_cv_ld_eh_gc_sections=no
5201 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5202 | grep gcc_except_table > /dev/null; then
5203 gcc_cv_ld_eh_gc_sections=yes
5204 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5205 if test x$gcc_cv_as_comdat_group != xyes; then
5206 gcc_cv_ld_eh_gc_sections=no
5207 cat > conftest.s <<EOF
5210 .type _start, @function
5213 .size _start, .-_start
5214 .section .gnu.linkonce.t.foo,"ax",@progbits
5215 .type foo, @function
5219 .section .gcc_except_table.foo,"a",@progbits
5222 .section .eh_frame,"a",@progbits
5225 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5226 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5227 | grep "gc-sections option ignored" > /dev/null; then
5228 gcc_cv_ld_eh_gc_sections=no
5229 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5230 | grep gcc_except_table > /dev/null; then
5231 gcc_cv_ld_eh_gc_sections=yes
5237 rm -f conftest.s conftest.o conftest
5241 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5242 gcc_cv_ld_eh_gc_sections=no
5245 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5246 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5247 [Define if your linker supports garbage collection of
5248 sections in presence of EH frames.])
5250 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5252 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5253 gcc_cv_ld_eh_gc_sections_bug=no
5254 if test $in_tree_ld = yes ; then
5255 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5256 && test $in_tree_ld_is_elf = yes; then
5257 gcc_cv_ld_eh_gc_sections_bug=yes
5259 elif test x$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
5260 gcc_cv_ld_eh_gc_sections_bug=yes
5261 cat > conftest.s <<EOF
5264 .type _start, @function
5267 .size _start, .-_start
5268 .section .text.startup.foo,"ax",@progbits
5269 .type foo, @function
5273 .section .gcc_except_table.foo,"a",@progbits
5276 .section .eh_frame,"a",@progbits
5279 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5280 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5281 | grep "gc-sections option ignored" > /dev/null; then
5283 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5284 | grep gcc_except_table > /dev/null; then
5285 gcc_cv_ld_eh_gc_sections_bug=no
5288 rm -f conftest.s conftest.o conftest
5290 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5291 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5292 [Define if your linker has buggy garbage collection of
5293 sections support when .text.startup.foo like sections are used.])
5295 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5297 AC_MSG_CHECKING(linker for compressed debug sections)
5298 # gold/gld support compressed debug sections since binutils 2.19/2.21
5299 # In binutils 2.26, gld gained support for the ELF gABI format.
5300 if test $in_tree_ld = yes ; then
5301 gcc_cv_ld_compress_debug=0
5302 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5303 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5304 gcc_cv_ld_compress_debug=2
5305 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5306 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5307 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5308 gcc_cv_ld_compress_debug=3
5309 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5310 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5311 && test $in_tree_ld_is_elf = yes; then
5312 gcc_cv_ld_compress_debug=1
5314 elif echo "$ld_ver" | grep GNU > /dev/null; then
5315 if test "$ld_vers_major" -lt 2 \
5316 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5317 gcc_cv_ld_compress_debug=0
5318 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5319 gcc_cv_ld_compress_debug=1
5321 gcc_cv_ld_compress_debug=3
5322 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5324 if test $ld_is_gold = yes; then
5325 gcc_cv_ld_compress_debug=2
5326 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5332 # Introduced in Solaris 11.2.
5333 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5334 gcc_cv_ld_compress_debug=3
5335 gcc_cv_ld_compress_debug_option="-z compress-sections"
5337 gcc_cv_ld_compress_debug=0
5341 # Assume linkers other than GNU ld don't support compessed debug
5343 gcc_cv_ld_compress_debug=0
5348 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5349 [Define to the level of your linker's compressed debug section support.])
5350 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5351 [Define to the linker option to enable compressed debug sections.])
5352 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5354 if test x"$ld64_flag" = x"yes"; then
5356 # Set defaults for possibly untestable items.
5357 gcc_cv_ld64_export_dynamic=0
5359 if test "$build" = "$host"; then
5365 # On Darwin, because of FAT library support, it is often possible to execute
5366 # exes from compatible archs even when the host differs from the build system.
5367 case "$build","$host" in
5368 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5373 # If the configurer specified a minimum ld64 version to be supported, then use
5374 # that to determine feature support.
5375 if test x"${gcc_cv_ld64_version}" != x; then
5376 AC_MSG_CHECKING(ld64 specified version)
5377 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5378 AC_MSG_RESULT($gcc_cv_ld64_major)
5379 if test "$gcc_cv_ld64_major" -ge 236; then
5380 gcc_cv_ld64_export_dynamic=1
5382 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5383 # If the version was not specified, try to find it.
5384 AC_MSG_CHECKING(linker version)
5385 if test x"${gcc_cv_ld64_version}" = x; then
5386 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5388 AC_MSG_RESULT($gcc_cv_ld64_version)
5390 AC_MSG_CHECKING(linker for -export_dynamic support)
5391 gcc_cv_ld64_export_dynamic=1
5392 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5393 gcc_cv_ld64_export_dynamic=0
5395 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5398 if test x"${gcc_cv_ld64_version}" != x; then
5399 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5400 [Define to ld64 version.])
5403 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5404 [Define to 1 if ld64 supports '-export_dynamic'.])
5411 AC_CACHE_CHECK(linker --as-needed support,
5412 gcc_cv_ld_as_needed,
5413 [gcc_cv_ld_as_needed=no
5414 gcc_cv_ld_as_needed_option='--as-needed'
5415 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5416 if test $in_tree_ld = yes ; then
5417 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5418 && test $in_tree_ld_is_elf = yes; then
5419 gcc_cv_ld_as_needed=yes
5421 elif test x$gcc_cv_ld != x; then
5422 # Check if linker supports --as-needed and --no-as-needed options
5423 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5424 gcc_cv_ld_as_needed=yes
5426 case "$target:$gnu_ld" in
5428 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5430 gcc_cv_ld_as_needed=yes
5431 gcc_cv_ld_as_needed_option="-z ignore"
5432 gcc_cv_ld_no_as_needed_option="-z record"
5436 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5437 # dl_iterate_phdr, i.e. since Solaris 11.
5439 *-*-solaris2.1[[1-9]]*)
5441 i?86-*-* | x86_64-*-*)
5442 if echo "$ld_ver" | grep GNU > /dev/null; then
5443 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5444 gcc_cv_ld_as_needed=no
5450 gcc_cv_ld_as_needed=no
5454 if test x"$gcc_cv_ld_as_needed" = xyes; then
5455 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5456 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5457 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5458 [Define to the linker option to ignore unused dependencies.])
5459 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5460 [Define to the linker option to keep unused dependencies.])
5463 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5464 saved_LDFLAGS="$LDFLAGS"
5465 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5466 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5467 AC_LINK_IFELSE([int main(void) {return 0;}],
5468 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5470 LDFLAGS="$saved_LDFLAGS"
5471 if test "x$gcc_cv_ld_clearcap" = xyes; then
5472 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5473 [Define if the linker supports clearing hardware capabilities via mapfile.])
5474 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5476 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5482 emul_name="-melf32lppc"
5485 emul_name="-melf32ppc"
5488 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5490 [gcc_cv_ld_ppc_attr=no
5491 if test x"$ld_is_gold" = xyes; then
5492 gcc_cv_ld_ppc_attr=yes
5493 elif test $in_tree_ld = yes ; then
5494 if test "$gcc_cv_gld_major_version" -eq 2 \
5495 -a "$gcc_cv_gld_minor_version" -ge 28 \
5496 -o "$gcc_cv_gld_major_version" -gt 2; then
5497 gcc_cv_ld_ppc_attr=yes
5499 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5500 # check that merging the long double .gnu_attribute doesn't warn
5501 cat > conftest1.s <<EOF
5504 cat > conftest2.s <<EOF
5507 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5508 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5509 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5510 && test ! -s conftest.err; then
5511 gcc_cv_ld_ppc_attr=yes
5513 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5516 if test x$gcc_cv_ld_ppc_attr = xyes; then
5517 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5518 [Define if your PowerPC linker has .gnu.attributes long double support.])
5523 case "$target:$tm_file" in
5524 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5527 emul_name="-melf64lppc"
5530 emul_name="-melf64ppc"
5533 emul_name="-melf64ppc_fbsd"
5536 AC_CACHE_CHECK(linker support for omitting dot symbols,
5537 gcc_cv_ld_no_dot_syms,
5538 [gcc_cv_ld_no_dot_syms=no
5539 if test x"$ld_is_gold" = xyes; then
5540 gcc_cv_ld_no_dot_syms=yes
5541 elif test $in_tree_ld = yes ; then
5542 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5543 gcc_cv_ld_no_dot_syms=yes
5545 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5546 cat > conftest1.s <<EOF
5550 cat > conftest2.s <<EOF
5551 .section ".opd","aw"
5556 .quad .LEfoo,.TOC.@tocbase,0
5562 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5563 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5564 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5565 gcc_cv_ld_no_dot_syms=yes
5567 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5570 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5571 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5572 [Define if your PowerPC64 linker only needs function descriptor syms.])
5575 AC_CACHE_CHECK(linker large toc support,
5576 gcc_cv_ld_large_toc,
5577 [gcc_cv_ld_large_toc=no
5578 if test x"$ld_is_gold" = xyes; then
5579 gcc_cv_ld_large_toc=yes
5580 elif test $in_tree_ld = yes ; then
5581 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5582 gcc_cv_ld_large_toc=yes
5584 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5585 cat > conftest.s <<EOF
5586 .section ".tbss","awT",@nobits
5592 addis 9,13,ie0@got@tprel@ha
5593 ld 9,ie0@got@tprel@l(9)
5595 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5596 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5597 gcc_cv_ld_large_toc=yes
5599 rm -f conftest conftest.o conftest.s
5602 if test x"$gcc_cv_ld_large_toc" = xyes; then
5603 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5604 [Define if your PowerPC64 linker supports a large TOC.])
5607 AC_CACHE_CHECK(linker toc pointer alignment,
5608 gcc_cv_ld_toc_align,
5609 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5610 cat > conftest.s <<EOF
5615 .section .data.rel.ro,"aw",@progbits
5620 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5621 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5622 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5624 rm -f conftest conftest.o conftest.s
5627 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5628 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5629 [Define to .TOC. alignment forced by your linker.])
5636 AC_CACHE_CHECK(linker large toc support,
5637 gcc_cv_ld_large_toc,
5638 [gcc_cv_ld_large_toc=no
5639 if test x$gcc_cv_as != x ; then
5640 cat > conftest.s <<EOF
5650 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5651 gcc_cv_ld_large_toc=yes
5653 rm -f conftest conftest.o conftest.s
5656 if test x"$gcc_cv_ld_large_toc" = xyes; then
5657 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5658 [Define if your PowerPC64 linker supports a large TOC.])
5663 AC_CACHE_CHECK(linker --build-id support,
5665 [gcc_cv_ld_buildid=no
5666 if test $in_tree_ld = yes ; then
5667 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5668 "$gcc_cv_gld_minor_version" -ge 18 -o \
5669 "$gcc_cv_gld_major_version" -gt 2 \
5670 && test $in_tree_ld_is_elf = yes; then
5671 gcc_cv_ld_buildid=yes
5673 elif test x$gcc_cv_ld != x; then
5674 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5675 gcc_cv_ld_buildid=yes
5678 if test x"$gcc_cv_ld_buildid" = xyes; then
5679 AC_DEFINE(HAVE_LD_BUILDID, 1,
5680 [Define if your linker supports --build-id.])
5683 AC_ARG_ENABLE(linker-build-id,
5684 [AS_HELP_STRING([--enable-linker-build-id],
5685 [compiler will always pass --build-id to linker])],
5687 enable_linker_build_id=no)
5689 if test x"$enable_linker_build_id" = xyes; then
5690 if test x"$gcc_cv_ld_buildid" = xyes; then
5691 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5692 [Define if gcc should always pass --build-id to linker.])
5694 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5698 # In binutils 2.21, GNU ld gained support for new emulations fully
5699 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5700 AC_CACHE_CHECK(linker *_sol2 emulation support,
5701 gcc_cv_ld_sol2_emulation,
5702 [gcc_cv_ld_sol2_emulation=no
5703 if test $in_tree_ld = yes ; then
5704 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5705 "$gcc_cv_gld_minor_version" -ge 21 -o \
5706 "$gcc_cv_gld_major_version" -gt 2 \
5707 && test $in_tree_ld_is_elf = yes; then
5708 gcc_cv_ld_sol2_emulation=yes
5710 elif test x$gcc_cv_ld != x; then
5711 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5712 grep _sol2 > /dev/null; then
5713 gcc_cv_ld_sol2_emulation=yes
5716 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5717 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5718 [Define if your linker supports the *_sol2 emulations.])
5721 AC_CACHE_CHECK(linker --sysroot support,
5723 [gcc_cv_ld_sysroot=no
5724 if test $in_tree_ld = yes ; then
5725 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5726 gcc_cv_ld_sysroot=yes
5728 elif test x$gcc_cv_ld != x; then
5729 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5730 gcc_cv_ld_sysroot=yes
5733 if test x"$gcc_cv_ld_sysroot" = xyes; then
5734 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5735 [Define if your linker supports --sysroot.])
5740 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5741 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5742 gcc_cv_solaris_crts,
5743 [gcc_cv_solaris_crts=no
5744 if test x$host != x$target; then
5745 if test "x$with_sysroot" = xyes; then
5746 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5748 target_sysroot="${with_sysroot}"
5751 target_libdir="$target_sysroot/usr/lib"
5752 # At the time they were added, gcrt1.o became a symlink for backwards
5753 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5755 i?86-*-solaris2* | x86_64-*-solaris2*)
5756 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5759 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5764 if test x$gcc_cv_solaris_crts = xyes; then
5765 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5766 [Define if the system-provided CRTs are present on Solaris.])
5769 AC_ARG_ENABLE(libssp,
5770 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5771 [case "${enableval}" in
5775 AC_MSG_ERROR([unknown libssp setting $enableval])
5779 # Test for stack protector support in target C library.
5780 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5781 gcc_cv_libc_provides_ssp,
5782 [gcc_cv_libc_provides_ssp=no
5783 if test "x$enable_libssp" = "xno"; then
5784 gcc_cv_libc_provides_ssp=yes
5785 elif test "x$enable_libssp" = "xyes"; then
5786 gcc_cv_libc_provides_ssp=no
5790 # All versions of musl provide stack protector
5791 gcc_cv_libc_provides_ssp=yes;;
5792 *-*-linux* | *-*-kfreebsd*-gnu)
5793 # glibc 2.4 and later provides __stack_chk_fail and
5794 # either __stack_chk_guard, or TLS access to stack guard canary.
5795 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5796 [if test -f $target_header_dir/features.h \
5797 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5798 $target_header_dir/features.h > /dev/null; then
5799 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5800 $target_header_dir/features.h > /dev/null && \
5801 test -f $target_header_dir/bits/uClibc_config.h && \
5802 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5803 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5804 gcc_cv_libc_provides_ssp=yes
5806 # all versions of Bionic support stack protector
5807 elif test -f $target_header_dir/sys/cdefs.h \
5808 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5809 $target_header_dir/sys/cdefs.h > /dev/null; then
5810 gcc_cv_libc_provides_ssp=yes
5814 # Avoid complicated tests (see
5815 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5816 # simply assert that glibc does provide this, which is true for all
5817 # realistically usable GNU/Hurd configurations.
5818 # All supported versions of musl provide it as well
5819 gcc_cv_libc_provides_ssp=yes;;
5820 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5821 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5822 [echo "no __stack_chk_fail on this target"])
5824 *) gcc_cv_libc_provides_ssp=no ;;
5828 if test x$gcc_cv_libc_provides_ssp = xyes; then
5829 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5830 [Define if your target C library provides stack protector support])
5833 # Check whether --enable-default-ssp was given.
5834 AC_ARG_ENABLE(default-ssp,
5835 [AS_HELP_STRING([--enable-default-ssp],
5836 [enable Stack Smashing Protection as default])],[
5837 if test x$gcc_cv_libc_provides_ssp = xyes; then
5839 ia64*-*-*) enable_default_ssp=no ;;
5840 *) enable_default_ssp=$enableval ;;
5843 enable_default_ssp=no
5845 enable_default_ssp=no)
5846 if test x$enable_default_ssp = xyes ; then
5847 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5848 [Define if your target supports default stack protector and it is enabled.])
5850 AC_SUBST([enable_default_ssp])
5852 # Test for <sys/sdt.h> on the target.
5853 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5854 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5856 if test -f $target_header_dir/sys/sdt.h; then
5858 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5859 [Define if your target C library provides sys/sdt.h])
5861 AC_MSG_RESULT($have_sys_sdt_h)
5863 # Check if TFmode long double should be used by default or not.
5864 # Some glibc targets used DFmode long double, but with glibc 2.4
5865 # and later they can use TFmode.
5867 powerpc*-*-linux* | \
5871 AC_ARG_WITH(long-double-128,
5872 [AS_HELP_STRING([--with-long-double-128],
5873 [use 128-bit long double by default])],
5874 gcc_cv_target_ldbl128="$with_long_double_128",
5875 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5876 [gcc_cv_target_ldbl128=no
5877 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5878 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5879 && gcc_cv_target_ldbl128=yes
5883 if test x$gcc_cv_target_ldbl128 = xyes; then
5884 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5885 [Define if TFmode long double should be the default])
5888 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5889 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5890 gcc_cv_libc_provides_hwcap_in_tcb=no
5893 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5896 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5897 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5898 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5901 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5902 gcc_cv_target_dl_iterate_phdr=unknown
5904 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5905 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5906 # libdl there, both complicating its use and breaking compatibility
5907 # between Solaris 10 updates.
5908 *-*-solaris2.1[[1-9]]*)
5909 # <link.h> needs both a dl_iterate_phdr declaration and support for
5910 # compilation with largefile support.
5911 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5912 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5913 gcc_cv_target_dl_iterate_phdr=yes
5915 gcc_cv_target_dl_iterate_phdr=no
5918 *-*-dragonfly* | *-*-freebsd*)
5919 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5920 gcc_cv_target_dl_iterate_phdr=yes
5922 gcc_cv_target_dl_iterate_phdr=no
5926 gcc_cv_target_dl_iterate_phdr=yes
5929 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5930 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5931 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5932 [Define if your target C library provides the `dl_iterate_phdr' function.])
5934 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5936 # We no longer support different GC mechanisms. Emit an error if
5937 # the user configures with --with-gc.
5939 [AS_HELP_STRING([--with-gc={page,zone}],
5940 [this option is not supported anymore. It used to choose
5941 the garbage collection mechanism to use with the compiler])],
5942 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5945 # Libraries to use on the host. This will normally be set by the top
5946 # level Makefile. Here we simply capture the value for our Makefile.
5947 if test -z "${HOST_LIBS+set}"; then
5952 # Use the system's zlib library.
5955 dnl Very limited version of automake's enable-maintainer-mode
5957 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5958 dnl maintainer-mode is disabled by default
5959 AC_ARG_ENABLE(maintainer-mode,
5960 [AS_HELP_STRING([--enable-maintainer-mode],
5961 [enable make rules and dependencies not useful
5962 (and sometimes confusing) to the casual installer])],
5963 maintainer_mode=$enableval,
5966 AC_MSG_RESULT($maintainer_mode)
5968 if test "$maintainer_mode" = "yes"; then
5975 dnl Whether to prevent multiple front-ends from linking at the same time
5977 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5978 AC_ARG_ENABLE(link-mutex,
5979 [AS_HELP_STRING([--enable-link-mutex],
5980 [avoid linking multiple front-ends at once to avoid thrashing
5981 on the build machine])],
5982 do_link_mutex=$enableval,
5984 AC_MSG_RESULT($do_link_mutex)
5986 if test "$do_link_mutex" = "yes"; then
5991 AC_SUBST(DO_LINK_MUTEX)
5997 # Make empty files to contain the specs and options for each language.
5998 # Then add #include lines to for a compiler that has specs and/or options.
6004 # These (without "all_") are set in each config-lang.in.
6005 # `language' must be a single word so is spelled singularly.
6008 all_outputs='Makefile'
6009 # List of language makefile fragments.
6011 # Additional files for gengtype
6012 all_gtfiles="$target_gtfiles"
6014 # These are the languages that are set in --enable-languages,
6015 # and are available in the GCC tree.
6016 all_selected_languages=
6018 # Add the language fragments.
6019 # Languages are added via two mechanisms. Some information must be
6020 # recorded in makefile variables, these are defined in config-lang.in.
6021 # We accumulate them and plug them into the main Makefile.
6022 # The other mechanism is a set of hooks for each of the main targets
6023 # like `clean', `install', etc.
6025 language_hooks="Make-hooks"
6027 for lang in ${srcdir}/*/config-lang.in
6030 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6032 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6033 if test "x$lang_alias" = x
6035 echo "$lang doesn't set \$language." 1>&2
6038 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6039 subdirs="$subdirs $subdir"
6041 # $gcc_subdir is where the gcc integration files are to be found
6042 # for a language, both for internal compiler purposes (compiler
6043 # sources implementing front-end to GCC tree converters), and for
6044 # build infrastructure purposes (Make-lang.in, etc.)
6046 # This will be <subdir> (relative to $srcdir) if a line like
6047 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6048 # is found in <langdir>/config-lang.in, and will remain <langdir>
6051 # Except for the language alias (fetched above), the regular
6052 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6053 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6054 # only this and the language alias.
6056 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6057 if [ "$gcc_subdir" = "" ]; then
6058 gcc_subdir="$subdir"
6061 case ",$enable_languages," in
6063 all_selected_languages="$all_selected_languages $lang_alias"
6064 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6065 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6077 . ${srcdir}/$gcc_subdir/config-lang.in
6078 if test "x$language" = x
6080 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6085 case ",$enable_languages," in
6088 for i in $subdir_requires; do
6089 test -f "${srcdir}/$i/config-lang.in" && continue
6097 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6098 if test -f $srcdir/$gcc_subdir/lang.opt; then
6099 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6100 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6102 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6103 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6105 all_languages="$all_languages $language"
6106 all_compilers="$all_compilers $compilers"
6107 all_outputs="$all_outputs $outputs"
6108 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6109 case ",$enable_languages," in
6111 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6113 AC_SUBST(enable_lto)
6120 for language in $all_selected_languages
6122 check_languages="$check_languages check-$language"
6125 # We link each language in with a set of hooks, reached indirectly via
6126 # lang.${target}. Only do so for selected languages.
6130 target_list="all.cross start.encap rest.encap tags \
6131 install-common install-man install-info install-pdf install-html dvi \
6132 pdf html uninstall info man srcextra srcman srcinfo \
6133 mostlyclean clean distclean maintainer-clean install-plugin"
6135 for t in $target_list
6138 for lang in $all_selected_languages
6142 echo "lang.$t: $x" >> Make-hooks
6146 # Option include files
6149 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6150 option_includes="option-includes.mk"
6151 AC_SUBST_FILE(option_includes)
6159 echo "dir ." > .gdbinit
6160 echo "dir ${srcdir}" >> .gdbinit
6161 if test x$gdb_needs_out_file_path = xyes
6163 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6165 if test "x$subdirs" != x; then
6168 echo "dir ${srcdir}/$s" >> .gdbinit
6171 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6172 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6174 # Put a breakpoint on __asan_report_error to help with debugging buffer
6177 *-fsanitize=address*)
6178 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6182 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6183 AC_SUBST(gcc_tooldir)
6186 # Find a directory in which to install a shared libgcc.
6188 AC_ARG_ENABLE(version-specific-runtime-libs,
6189 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6190 [specify that runtime libraries should be
6191 installed in a compiler-specific directory])])
6193 # Substitute configuration variables
6196 AC_SUBST(all_compilers)
6197 AC_SUBST(all_gtfiles)
6198 AC_SUBST(all_lang_makefrags)
6199 AC_SUBST(all_languages)
6200 AC_SUBST(all_selected_languages)
6201 AC_SUBST(build_exeext)
6202 AC_SUBST(build_install_headers_dir)
6203 AC_SUBST(build_xm_file_list)
6204 AC_SUBST(build_xm_include_list)
6205 AC_SUBST(build_xm_defines)
6206 AC_SUBST(build_file_translate)
6207 AC_SUBST(check_languages)
6208 AC_SUBST(cpp_install_dir)
6209 AC_SUBST(xmake_file)
6210 AC_SUBST(tmake_file)
6211 AC_SUBST(TM_ENDIAN_CONFIG)
6212 AC_SUBST(TM_MULTILIB_CONFIG)
6213 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6214 AC_SUBST(extra_gcc_objs)
6215 AC_SUBST(user_headers_inc_next_pre)
6216 AC_SUBST(user_headers_inc_next_post)
6217 AC_SUBST(extra_headers_list)
6218 AC_SUBST(extra_objs)
6219 AC_SUBST(extra_programs)
6220 AC_SUBST(float_h_file)
6221 AC_SUBST(gcc_config_arguments)
6222 AC_SUBST(gcc_gxx_include_dir)
6223 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6224 AC_SUBST(host_exeext)
6225 AC_SUBST(host_xm_file_list)
6226 AC_SUBST(host_xm_include_list)
6227 AC_SUBST(host_xm_defines)
6228 AC_SUBST(out_host_hook_obj)
6230 AC_SUBST(lang_opt_files)
6231 AC_SUBST(lang_specs_files)
6232 AC_SUBST(lang_tree_files)
6233 AC_SUBST(local_prefix)
6235 AC_SUBST(objc_boehm_gc)
6237 AC_SUBST(out_object_file)
6238 AC_SUBST(common_out_file)
6239 AC_SUBST(common_out_object_file)
6240 AC_SUBST(tm_file_list)
6241 AC_SUBST(tm_include_list)
6242 AC_SUBST(tm_defines)
6243 AC_SUBST(tm_p_file_list)
6244 AC_SUBST(tm_p_include_list)
6245 AC_SUBST(xm_file_list)
6246 AC_SUBST(xm_include_list)
6247 AC_SUBST(xm_defines)
6248 AC_SUBST(use_gcc_stdint)
6249 AC_SUBST(c_target_objs)
6250 AC_SUBST(cxx_target_objs)
6251 AC_SUBST(fortran_target_objs)
6252 AC_SUBST(target_cpu_default)
6254 AC_SUBST_FILE(language_hooks)
6257 if test x${build} = x${host} ; then
6258 if test x${host} = x${target} ; then
6259 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6261 echo "Links are now set up to build a cross-compiler" 1>&2
6262 echo " from ${host} to ${target}." 1>&2
6265 if test x${host} = x${target} ; then
6266 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6267 echo " for ${target}." 1>&2
6269 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6270 echo " from ${host} to ${target}." 1>&2
6274 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6275 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6277 AC_ARG_VAR(ISLLIBS,[How to link isl])
6278 AC_ARG_VAR(ISLINC,[How to find isl include files])
6279 if test "x${ISLLIBS}" != "x" ; then
6280 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6284 AC_SUBST(pluginlibs)
6285 AC_SUBST(enable_plugin)
6286 if test x"$enable_plugin" = x"yes"; then
6287 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6291 # Enable --enable-host-shared
6292 AC_ARG_ENABLE(host-shared,
6293 [AS_HELP_STRING([--enable-host-shared],
6294 [build host code as shared libraries])],
6295 [PICFLAG=-fPIC], [PICFLAG=])
6296 AC_SUBST(enable_host_shared)
6300 AC_ARG_ENABLE(libquadmath-support,
6301 [AS_HELP_STRING([--disable-libquadmath-support],
6302 [disable libquadmath support for Fortran])],
6303 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6304 ENABLE_LIBQUADMATH_SUPPORT=yes)
6305 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6306 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6307 [Define to 1 to enable libquadmath support])
6311 # Specify what hash style to use by default.
6312 AC_ARG_WITH([linker-hash-style],
6313 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6314 [specify the linker hash style])],
6315 [case x"$withval" in
6317 LINKER_HASH_STYLE=sysv
6320 LINKER_HASH_STYLE=gnu
6323 LINKER_HASH_STYLE=both
6326 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6329 [LINKER_HASH_STYLE=''])
6330 if test x"${LINKER_HASH_STYLE}" != x; then
6331 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6332 [The linker hash style])
6335 # Specify what should be the default of -fdiagnostics-color option.
6336 AC_ARG_WITH([diagnostics-color],
6337 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6338 [specify the default of -fdiagnostics-color option
6339 auto-if-env stands for -fdiagnostics-color=auto if
6340 GCC_COLOR environment variable is present and
6341 -fdiagnostics-color=never otherwise])],
6342 [case x"$withval" in
6344 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6347 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6350 DIAGNOSTICS_COLOR_DEFAULT=-1
6353 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6356 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6359 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6360 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6361 [The default for -fdiagnostics-color option])
6363 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6364 # of jit/jit-playback.c.
6365 cat > gcc-driver-name.h <<EOF
6366 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6369 # Check whether --enable-default-pie was given.
6370 AC_ARG_ENABLE(default-pie,
6371 [AS_HELP_STRING([--enable-default-pie],
6372 [enable Position Independent Executable as default])],
6373 enable_default_pie=$enableval,
6374 enable_default_pie=no)
6375 if test x$enable_default_pie = xyes ; then
6376 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6377 [Define if your target supports default PIE and it is enabled.])
6379 AC_SUBST([enable_default_pie])
6381 # Check if -fno-PIE works.
6382 AC_CACHE_CHECK([for -fno-PIE option],
6384 [saved_CXXFLAGS="$CXXFLAGS"
6385 CXXFLAGS="$CXXFLAGS -fno-PIE"
6386 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6387 [gcc_cv_c_no_fpie=yes],
6388 [gcc_cv_c_no_fpie=no])
6389 CXXFLAGS="$saved_CXXFLAGS"])
6390 if test "$gcc_cv_c_no_fpie" = "yes"; then
6391 NO_PIE_CFLAGS="-fno-PIE"
6393 AC_SUBST([NO_PIE_CFLAGS])
6395 # Check if -no-pie works.
6396 AC_CACHE_CHECK([for -no-pie option],
6398 [saved_LDFLAGS="$LDFLAGS"
6399 LDFLAGS="$LDFLAGS -no-pie"
6400 AC_LINK_IFELSE([int main(void) {return 0;}],
6401 [gcc_cv_no_pie=yes],
6403 LDFLAGS="$saved_LDFLAGS"])
6404 if test "$gcc_cv_no_pie" = "yes"; then
6405 NO_PIE_FLAG="-no-pie"
6407 AC_SUBST([NO_PIE_FLAG])
6409 # Check linker supports '-z bndplt'
6410 ld_bndplt_support=no
6411 AC_MSG_CHECKING(linker -z bndplt option)
6412 if test x"$ld_is_gold" = xno; then
6413 if test $in_tree_ld = yes ; then
6414 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6415 ld_bndplt_support=yes
6417 elif test x$gcc_cv_ld != x; then
6418 # Check if linker supports -a bndplt option
6419 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6420 ld_bndplt_support=yes
6424 if test x"$ld_bndplt_support" = xyes; then
6425 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6426 [Define if your linker supports -z bndplt])
6428 AC_MSG_RESULT($ld_bndplt_support)
6430 # Check linker supports '--push-state'/'--pop-state'
6431 ld_pushpopstate_support=no
6432 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6433 if test x"$ld_is_gold" = xno; then
6434 if test $in_tree_ld = yes ; then
6435 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6436 ld_pushpopstate_support=yes
6438 elif test x$gcc_cv_ld != x; then
6439 # Check if linker supports --push-state/--pop-state options
6440 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6441 ld_pushpopstate_support=yes
6445 if test x"$ld_pushpopstate_support" = xyes; then
6446 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6447 [Define if your linker supports --push-state/--pop-state])
6449 AC_MSG_RESULT($ld_pushpopstate_support)
6451 # Configure the subdirectories
6452 # AC_CONFIG_SUBDIRS($subdirs)
6454 # Create the Makefile
6455 # and configure language subdirectories
6456 AC_CONFIG_FILES($all_outputs)
6458 AC_CONFIG_COMMANDS([default],
6460 case ${CONFIG_HEADERS} in
6461 *auto-host.h:config.in*)
6464 # Make sure all the subdirs exist.
6465 for d in $subdirs doc build common c-family
6467 test -d $d || mkdir $d
6470 [subdirs='$subdirs'])