2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical host name, for Ada.
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Used for constructing correct paths for offload compilers.
45 real_target_noncanonical=${target_noncanonical}
48 # Determine the target- and build-specific subdirectories
51 # Set program_transform_name
54 # Check for bogus environment variables.
55 # Test if LIBRARY_PATH contains the notation for the current directory
56 # since this would lead to problems installing/building glibc.
57 # LIBRARY_PATH contains the current directory if one of the following
59 # - one of the terminals (":" and ";") is the first or last sign
60 # - two terminals occur directly after each other
61 # - the path contains an element with a dot in it
62 AC_MSG_CHECKING(LIBRARY_PATH variable)
64 case ${LIBRARY_PATH} in
65 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
66 library_path_setting="contains current directory"
69 library_path_setting="ok"
73 AC_MSG_RESULT($library_path_setting)
74 if test "$library_path_setting" != "ok"; then
76 *** LIBRARY_PATH shouldn't contain the current directory when
77 *** building gcc. Please change the environment variable
78 *** and run configure again.])
81 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
82 # since this would lead to problems installing/building glibc.
83 # GCC_EXEC_PREFIX contains the current directory if one of the following
85 # - one of the terminals (":" and ";") is the first or last sign
86 # - two terminals occur directly after each other
87 # - the path contains an element with a dot in it
88 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
90 case ${GCC_EXEC_PREFIX} in
91 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
92 gcc_exec_prefix_setting="contains current directory"
95 gcc_exec_prefix_setting="ok"
99 AC_MSG_RESULT($gcc_exec_prefix_setting)
100 if test "$gcc_exec_prefix_setting" != "ok"; then
102 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
103 *** building gcc. Please change the environment variable
104 *** and run configure again.])
111 # Specify the local prefix
113 AC_ARG_WITH(local-prefix,
114 [AS_HELP_STRING([--with-local-prefix=DIR],
115 [specifies directory to put local include])],
116 [case "${withval}" in
117 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
119 *) local_prefix=$with_local_prefix ;;
122 # Default local prefix if it is empty
123 if test x$local_prefix = x; then
124 local_prefix=/usr/local
127 AC_ARG_WITH([native-system-header-dir],
128 [ --with-native-system-header-dir=dir
129 use dir as the directory to look for standard
130 system header files in. Defaults to /usr/include.],
132 case ${with_native_system_header_dir} in
133 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
134 /* | [[A-Za-z]]:[[\\/]]*) ;;
135 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
137 configured_native_system_header_dir="${withval}"
138 ], [configured_native_system_header_dir=])
140 AC_ARG_WITH(build-sysroot,
141 [AS_HELP_STRING([--with-build-sysroot=sysroot],
142 [use sysroot as the system root during the build])],
143 [if test x"$withval" != x ; then
144 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
146 [SYSROOT_CFLAGS_FOR_TARGET=])
147 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
149 if test "x$prefix" = xNONE; then
150 test_prefix=/usr/local
154 if test "x$exec_prefix" = xNONE; then
155 test_exec_prefix=$test_prefix
157 test_exec_prefix=$exec_prefix
161 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
162 [search for usr/lib, usr/include, et al, within DIR])],
164 case ${with_sysroot} in
166 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
168 case ${with_sysroot} in
169 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
170 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
173 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
174 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
176 case ${TARGET_SYSTEM_ROOT} in
177 "${test_prefix}"|"${test_prefix}/"*|\
178 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
179 '${prefix}'|'${prefix}/'*|\
180 '${exec_prefix}'|'${exec_prefix}/'*)
181 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
182 TARGET_SYSTEM_ROOT_DEFINE="$t"
187 TARGET_SYSTEM_ROOT_DEFINE=
188 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
190 AC_SUBST(TARGET_SYSTEM_ROOT)
191 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
192 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
194 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
195 # passed in by the toplevel make and thus we'd get different behavior
196 # depending on where we built the sources.
198 # Specify the g++ header file directory
199 AC_ARG_WITH(gxx-include-dir,
200 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
201 [specifies directory to put g++ header files])],
202 [case "${withval}" in
203 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
205 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
208 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
209 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
210 # relative to the sysroot.
211 gcc_gxx_include_dir_add_sysroot=0
213 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
214 if test x${gcc_gxx_include_dir} = x; then
215 if test x${enable_version_specific_runtime_libs} = xyes; then
216 gcc_gxx_include_dir='${libsubdir}/include/c++'
218 libstdcxx_incdir='include/c++/$(version)'
219 if test x$host != x$target; then
220 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
222 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
224 elif test "${with_sysroot+set}" = set; then
225 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
226 if test "${gcc_gxx_without_sysroot}"; then
227 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
228 gcc_gxx_include_dir_add_sysroot=1
232 AC_ARG_WITH(cpp_install_dir,
233 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
234 [install the user visible C preprocessor in DIR
235 (relative to PREFIX) as well as PREFIX/bin])],
236 [if test x$withval = xyes; then
237 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
238 elif test x$withval != xno; then
239 cpp_install_dir=$withval
242 # We would like to our source tree to be readonly. However when releases or
243 # pre-releases are generated, the flex/bison generated files as well as the
244 # various formats of manuals need to be included along with the rest of the
245 # sources. Therefore we have --enable-generated-files-in-srcdir to do
248 AC_MSG_CHECKING([whether to place generated files in the source directory])
249 dnl generated-files-in-srcdir is disabled by default
250 AC_ARG_ENABLE(generated-files-in-srcdir,
251 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
252 [put copies of generated files in source dir
253 intended for creating source tarballs for users
254 without texinfo bison or flex])],
255 generated_files_in_srcdir=$enableval,
256 generated_files_in_srcdir=no)
258 AC_MSG_RESULT($generated_files_in_srcdir)
260 if test "$generated_files_in_srcdir" = "yes"; then
267 # -------------------
268 # Find default linker
269 # -------------------
273 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
274 gnu_ld_flag="$with_gnu_ld",
278 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
282 # With pre-defined ld
284 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
285 DEFAULT_LINKER="$with_ld")
286 if test x"${DEFAULT_LINKER+set}" = x"set"; then
287 if test ! -x "$DEFAULT_LINKER"; then
288 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
289 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
291 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
294 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
295 [Define to enable the use of a default linker.])
298 AC_MSG_CHECKING([whether a default linker was specified])
299 if test x"${DEFAULT_LINKER+set}" = x"set"; then
300 if test x"$gnu_ld_flag" = x"no"; then
301 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
303 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
309 # With demangler in GNU ld
310 AC_ARG_WITH(demangler-in-ld,
311 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
312 demangler_in_ld="$with_demangler_in_ld",
315 # ----------------------
316 # Find default assembler
317 # ----------------------
321 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
322 gas_flag="$with_gnu_as",
326 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
327 DEFAULT_ASSEMBLER="$with_as")
328 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
329 if test ! -x "$DEFAULT_ASSEMBLER"; then
330 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
331 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
334 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
335 [Define to enable the use of a default assembler.])
338 AC_MSG_CHECKING([whether a default assembler was specified])
339 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
340 if test x"$gas_flag" = x"no"; then
341 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
343 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
353 # If a non-executable a.out is present (e.g. created by GNU as above even if
354 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
355 # file, even when creating an executable, so an execution test fails.
356 # Remove possible default executable files to avoid this.
358 # FIXME: This really belongs into AC_PROG_CC and can be removed once
359 # Autoconf includes it.
360 rm -f a.out a.exe b.out
362 # Find the native compiler
365 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
367 # Do configure tests with the C++ compiler, since that's what we build with.
370 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
371 # optimizations to be activated explicitly by the toplevel.
374 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
375 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
380 # Determine PICFLAG for target gnatlib.
381 GCC_PICFLAG_FOR_TARGET
382 AC_SUBST(PICFLAG_FOR_TARGET)
384 # -------------------------
385 # Check C compiler features
386 # -------------------------
388 AC_USE_SYSTEM_EXTENSIONS
394 # sizeof(char) is 1 by definition.
395 AC_CHECK_SIZEOF(void *)
396 AC_CHECK_SIZEOF(short)
398 AC_CHECK_SIZEOF(long)
399 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
401 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
402 AC_MSG_ERROR([uint64_t or int64_t not found])
405 # check what underlying integer type int64_t uses
406 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
407 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
411 template <typename T> struct X { };
413 struct X<long> { typedef long t; };
414 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
415 if test "$ac_cv_int64_t_type" = "long"; then
416 AC_DEFINE(INT64_T_IS_LONG, 1,
417 [Define if int64_t uses long as underlying type.])
419 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
423 template <typename T> struct X { };
425 struct X<long long> { typedef long long t; };
426 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
429 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
430 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
432 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
433 if test $ac_cv_std_swap_in_utility = yes; then
434 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
435 [Define if <utility> defines std::swap.])
438 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
439 # If the host compiler is affected by the bug, and we build with optimization
440 # enabled (which happens e.g. when cross-compiling), the pool allocator may
441 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
442 # Since there is no reliable feature check for the presence of this bug,
443 # we simply use a GCC version number check. (This should never trigger for
444 # stages 2 or 3 of a native bootstrap.)
446 if test "$GCC" = yes; then
447 saved_CXXFLAGS="$CXXFLAGS"
449 # The following test compilation will succeed if and only if $CXX accepts
450 # -fno-strict-aliasing *and* is older than GCC 4.3.
451 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
452 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
454 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
455 #error compiler not affected by placement new aliasing bug
458 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
459 [AC_MSG_RESULT([no])])
461 CXXFLAGS="$saved_CXXFLAGS"
463 AC_SUBST(aliasing_flags)
467 # ---------------------
468 # Warnings and checking
469 # ---------------------
471 # Check $CC warning features (if it's GCC).
472 # We want to use -pedantic, but we don't want warnings about
476 # * C++11 narrowing conversions in { }
477 # So, we only use -pedantic if we can disable those warnings.
479 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
480 AC_ARG_ENABLE(build-format-warnings,
481 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
482 [],[enable_build_format_warnings=yes])
483 AS_IF([test $enable_build_format_warnings = no],
484 [wf_opt=-Wno-format],[wf_opt=])
485 ACX_PROG_CXX_WARNING_OPTS(
486 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
487 [-Wcast-qual $wf_opt])), [loose_warn])
488 ACX_PROG_CC_WARNING_OPTS(
489 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
491 ACX_PROG_CXX_WARNING_OPTS(
492 m4_quote(m4_do([-Wmissing-format-attribute ],
493 [-Woverloaded-virtual])), [strict_warn])
494 ACX_PROG_CC_WARNING_OPTS(
495 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
496 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
497 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
498 [-Wno-overlength-strings])), [strict_warn])
499 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
501 # The above macros do nothing if the compiler is not GCC. However, the
502 # Makefile has more goo to add other flags, so these variables are used
503 # to enable warnings only for GCC.
506 if test "x$GCC" = "xyes"; then
507 warn_cflags='$(GCC_WARN_CFLAGS)'
508 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
510 AC_SUBST(warn_cflags)
511 AC_SUBST(warn_cxxflags)
513 # Disable exceptions and RTTI if building with g++
514 ACX_PROG_CC_WARNING_OPTS(
515 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
518 # Enable expensive internal checks
520 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
524 AC_ARG_ENABLE(checking,
525 [AS_HELP_STRING([[--enable-checking[=LIST]]],
526 [enable expensive run-time checks. With LIST,
527 enable only specific categories of checks.
528 Categories are: yes,no,all,none,release.
529 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
530 rtlflag,rtl,runtime,tree,valgrind,types])],
531 [ac_checking_flags="${enableval}"],[
532 # Determine the default checks.
533 if test x$is_release = x ; then
534 ac_checking_flags=yes,extra
536 ac_checking_flags=release
538 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
539 for check in release $ac_checking_flags
542 # these set all the flags to specific states
543 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
544 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
545 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
546 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
547 ac_tree_checking=1 ; ac_valgrind_checking= ;
548 ac_types_checking=1 ;;
549 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
550 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
551 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
552 ac_rtlflag_checking= ; ac_runtime_checking= ;
553 ac_tree_checking= ; ac_valgrind_checking= ;
554 ac_types_checking= ;;
555 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
556 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
557 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
558 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
559 ac_tree_checking=1 ; ac_valgrind_checking= ;
560 ac_types_checking=1 ;;
561 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
562 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
563 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
564 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
565 ac_tree_checking= ; ac_valgrind_checking= ;
566 ac_types_checking= ;;
567 # these enable particular checks
568 assert) ac_assert_checking=1 ;;
569 df) ac_df_checking=1 ;;
570 extra) ac_extra_checking=1 ;;
571 fold) ac_fold_checking=1 ;;
572 gc) ac_gc_checking=1 ;;
573 gcac) ac_gc_always_collect=1 ;;
574 gimple) ac_gimple_checking=1 ;;
575 misc) ac_checking=1 ;;
576 rtl) ac_rtl_checking=1 ;;
577 rtlflag) ac_rtlflag_checking=1 ;;
578 runtime) ac_runtime_checking=1 ;;
579 tree) ac_tree_checking=1 ;;
580 types) ac_types_checking=1 ;;
581 valgrind) ac_valgrind_checking=1 ;;
582 *) AC_MSG_ERROR(unknown check category $check) ;;
588 if test x$ac_checking != x ; then
589 AC_DEFINE(CHECKING_P, 1,
590 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
591 bag of miscellaneous but relatively cheap checks.])
592 nocommon_flag=-fno-common
594 AC_DEFINE(CHECKING_P, 0)
596 AC_SUBST(nocommon_flag)
597 if test x$ac_extra_checking != x ; then
598 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
599 [Define to 0/1 if you want extra run-time checking that might affect code
602 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
604 if test x$ac_df_checking != x ; then
605 AC_DEFINE(ENABLE_DF_CHECKING, 1,
606 [Define if you want more run-time sanity checks for dataflow.])
608 if test x$ac_assert_checking != x ; then
609 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
610 [Define if you want assertions enabled. This is a cheap check.])
612 if test x$ac_gimple_checking != x ; then
613 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
614 [Define if you want operations on GIMPLE (the basic data structure of
615 the high-level optimizers) to be checked for dynamic type safety at
616 runtime. This is moderately expensive.])
618 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
619 if test x$ac_runtime_checking != x ; then
620 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
621 [Define if you want runtime assertions enabled. This is a cheap check.])
623 if test x$ac_tree_checking != x ; then
624 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
625 [Define if you want all operations on trees (the basic data
626 structure of the front ends) to be checked for dynamic type safety
627 at runtime. This is moderately expensive.
631 if test x$ac_types_checking != x ; then
632 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
633 [Define if you want all gimple types to be verified after gimplifiation.
637 AC_SUBST(TREECHECKING)
638 if test x$ac_rtl_checking != x ; then
639 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
640 [Define if you want all operations on RTL (the basic data structure
641 of the optimizer and back end) to be checked for dynamic type safety
642 at runtime. This is quite expensive.])
644 if test x$ac_rtlflag_checking != x ; then
645 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
646 [Define if you want RTL flag accesses to be checked against the RTL
647 codes that are supported for each access macro. This is relatively
650 if test x$ac_gc_checking != x ; then
651 AC_DEFINE(ENABLE_GC_CHECKING, 1,
652 [Define if you want the garbage collector to do object poisoning and
653 other memory allocation checks. This is quite expensive.])
655 if test x$ac_gc_always_collect != x ; then
656 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
657 [Define if you want the garbage collector to operate in maximally
658 paranoid mode, validating the entire heap and collecting garbage at
659 every opportunity. This is extremely expensive.])
661 if test x$ac_fold_checking != x ; then
662 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
663 [Define if you want fold checked that it never destructs its argument.
664 This is quite expensive.])
666 valgrind_path_defines=
669 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
670 dnl # an if statement. This was the source of very frustrating bugs
671 dnl # in converting to autoconf 2.5x!
672 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
674 # It is certainly possible that there's valgrind but no valgrind.h.
675 # GCC relies on making annotations so we must have both.
676 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
677 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
678 [[#include <valgrind/memcheck.h>
679 #ifndef VALGRIND_DISCARD
680 #error VALGRIND_DISCARD not defined
682 [gcc_cv_header_valgrind_memcheck_h=yes],
683 [gcc_cv_header_valgrind_memcheck_h=no])
684 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
685 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
686 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
687 [[#include <memcheck.h>
688 #ifndef VALGRIND_DISCARD
689 #error VALGRIND_DISCARD not defined
691 [gcc_cv_header_memcheck_h=yes],
692 [gcc_cv_header_memcheck_h=no])
693 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
694 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
695 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
696 [Define if valgrind's valgrind/memcheck.h header is installed.])
698 if test $gcc_cv_header_memcheck_h = yes; then
699 AC_DEFINE(HAVE_MEMCHECK_H, 1,
700 [Define if valgrind's memcheck.h header is installed.])
703 if test x$ac_valgrind_checking != x ; then
704 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
705 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
706 if test "x$valgrind_path" = "x" \
707 || (test $have_valgrind_h = no \
708 && test $gcc_cv_header_memcheck_h = no \
709 && test $gcc_cv_header_valgrind_memcheck_h = no); then
710 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
712 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
713 valgrind_command="$valgrind_path -q"
714 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
715 [Define if you want to run subprograms and generated programs
716 through valgrind (a memory checker). This is extremely expensive.])
718 AC_SUBST(valgrind_path_defines)
719 AC_SUBST(valgrind_command)
721 # Enable code coverage collection
722 AC_ARG_ENABLE(coverage,
723 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
724 [enable compiler's code coverage collection.
725 Use to measure compiler performance and locate
726 unused parts of the compiler. With LEVEL, specify
727 optimization. Values are opt, noopt,
729 [case "${enableval}" in
731 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
734 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
737 # a.k.a. --disable-coverage
741 AC_MSG_ERROR(unknown coverage setting $enableval)
745 AC_SUBST(coverage_flags)
747 AC_ARG_ENABLE(gather-detailed-mem-stats,
748 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
749 [enable detailed memory allocation stats gathering])], [],
750 [enable_gather_detailed_mem_stats=no])
751 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
752 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
753 [Define to enable detailed memory allocation stats gathering.])
755 AC_ARG_ENABLE(valgrind-annotations,
756 [AS_HELP_STRING([--enable-valgrind-annotations],
757 [enable valgrind runtime interaction])], [],
758 [enable_valgrind_annotations=no])
759 if test x$enable_valgrind_annotations != xno \
760 || test x$ac_valgrind_checking != x; then
761 if (test $have_valgrind_h = no \
762 && test $gcc_cv_header_memcheck_h = no \
763 && test $gcc_cv_header_valgrind_memcheck_h = no); then
764 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
766 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
767 [Define to get calls to the valgrind runtime enabled.])
770 # -------------------------------
771 # Miscenalleous configure options
772 # -------------------------------
776 [AS_HELP_STRING([--with-stabs],
777 [arrange to use stabs instead of host debug format])],
781 # Determine whether or not multilibs are enabled.
782 AC_ARG_ENABLE(multilib,
783 [AS_HELP_STRING([--enable-multilib],
784 [enable library support for multiple ABIs])],
785 [], [enable_multilib=yes])
786 AC_SUBST(enable_multilib)
788 # Determine whether or not multiarch is enabled.
789 AC_ARG_ENABLE(multiarch,
790 [AS_HELP_STRING([--enable-multiarch],
791 [enable support for multiarch paths])],
792 [case "${enableval}" in
793 yes|no|auto) enable_multiarch=$enableval;;
794 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
795 esac], [enable_multiarch=auto])
796 if test x${enable_multiarch} = xauto; then
797 if test x${with_native_system_header_dir} != x; then
798 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
801 if test x$host != x$target && test "x$with_sysroot" = x; then
802 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
806 AC_MSG_CHECKING(for multiarch configuration)
807 AC_SUBST(enable_multiarch)
808 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
810 # needed for setting the multiarch name for soft-float/hard-float ABIs
814 # default stack clash protection guard size as power of twos in bytes.
815 # Please keep these in sync with params.def.
819 # Keep the default value when the option is not used to 0, this allows us to
820 # distinguish between the cases where the user specifially set a value via
821 # configure and when the normal default value is used.
822 AC_ARG_WITH(stack-clash-protection-guard-size,
823 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
824 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
825 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
826 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
827 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
828 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
829 AC_MSG_ERROR(m4_normalize([
830 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
831 Must be between $stk_clash_min and $stk_clash_max.]))
834 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
835 [Define to larger than zero set the default stack clash protector size.])
837 # Enable __cxa_atexit for C++.
838 AC_ARG_ENABLE(__cxa_atexit,
839 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
842 # Enable C extension for decimal float if target supports it.
843 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
845 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
846 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
847 [Define to 1 to enable decimal float extension to C.])
849 # Use default_decimal_float for dependency.
850 enable_decimal_float=$default_decimal_float
852 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
853 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
854 [Define to 1 to specify that we are using the BID decimal floating
855 point format instead of DPD])
857 # Enable C extension for fixed-point arithmetic.
858 AC_ARG_ENABLE(fixed-point,
859 [AS_HELP_STRING([--enable-fixed-point],
860 [enable fixed-point arithmetic extension to C])],
865 enable_fixed_point=yes
869 enable_fixed_point=yes
872 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
873 enable_fixed_point=no
877 AC_SUBST(enable_fixed_point)
879 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
880 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
881 [Define to 1 to enable fixed-point arithmetic extension to C.])
884 # Pass with no value to take the default
885 # Pass with a value to specify a thread package
886 AC_ARG_ENABLE(threads,
887 [AS_HELP_STRING([[--enable-threads[=LIB]]],
888 [enable thread usage for target GCC,
889 using LIB thread package])],,
893 [AS_HELP_STRING([--enable-tls],
894 [enable or disable generation of tls code
895 overriding the assembler check for tls support])],
899 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
900 Valid choices are 'yes' and 'no'.]) ;;
904 AC_ARG_ENABLE(vtable-verify,
905 [AS_HELP_STRING([--enable-vtable-verify],
906 [enable vtable verification feature])],,
907 [enable_vtable_verify=no])
908 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
909 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
910 [Define 0/1 if vtable verification feature is enabled.])
912 AC_ARG_ENABLE(objc-gc,
913 [AS_HELP_STRING([--enable-objc-gc],
914 [enable the use of Boehm's garbage collector with
915 the GNU Objective-C runtime])],
916 if test x$enable_objc_gc = xno; then
924 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
925 dwarf2="$with_dwarf2",
928 AC_ARG_ENABLE(shared,
929 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
931 case $enable_shared in
935 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
936 for pkg in $enableval; do
937 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
944 ], [enable_shared=yes])
945 AC_SUBST(enable_shared)
948 [ --disable-gcov don't provide libgcov and related host tools],
949 [], [enable_gcov=yes])
950 AC_SUBST(enable_gcov)
953 [AS_HELP_STRING([--with-specs=SPECS],
954 [add SPECS to driver command-line processing])],
955 [CONFIGURE_SPECS=$withval],
958 AC_SUBST(CONFIGURE_SPECS)
960 ACX_PKGVERSION([GCC])
961 ACX_BUGURL([https://gcc.gnu.org/bugs/])
963 # Sanity check enable_languages in case someone does not run the toplevel
964 # configure # script.
965 AC_ARG_ENABLE(languages,
966 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
967 [case ,${enable_languages}, in
969 # go safe -- we cannot be much sure without the toplevel
971 # analysis of which target libs are present and usable
975 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
980 enable_languages=c,${enable_languages}
983 [enable_languages=c])
985 if test x"$enable_as_accelerator_for" != x; then
986 AC_DEFINE(ACCEL_COMPILER, 1,
987 [Define if this compiler should be built as the offload target compiler.])
988 enable_as_accelerator=yes
991 # In this case we expect offload compiler to be built as native, so we
992 # need to rename the driver to avoid clashes with host's drivers.
993 program_transform_name="s&^&${target}-&" ;;
995 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
996 program_transform_name=`echo $program_transform_name | sed $sedscript`
997 accel_dir_suffix=/accel/${target_noncanonical}
998 real_target_noncanonical=${enable_as_accelerator_for}
1000 AC_SUBST(enable_as_accelerator)
1001 AC_SUBST(real_target_noncanonical)
1002 AC_SUBST(accel_dir_suffix)
1004 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1005 tgt=`echo $tgt | sed 's/=.*//'`
1007 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1013 if test x"$offload_targets" = x; then
1014 offload_targets=$tgt
1016 offload_targets="$offload_targets,$tgt"
1019 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1020 [Define to offload targets, separated by commas.])
1021 if test x"$enable_offloading" != x; then
1022 AC_DEFINE(ENABLE_OFFLOADING, 1,
1023 [Define this to enable support for offloading.])
1025 AC_DEFINE(ENABLE_OFFLOADING, 0,
1026 [Define this to enable support for offloading.])
1029 if test x"$enable_hsa" = x1 ; then
1030 AC_DEFINE(ENABLE_HSA, 1,
1031 [Define this to enable support for generating HSAIL.])
1034 AC_ARG_WITH(multilib-list,
1035 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1037 with_multilib_list=default)
1039 # -------------------------
1040 # Checks for other programs
1041 # -------------------------
1045 # Find some useful tools
1047 # We need awk to create options.c and options.h.
1048 # Bail out if it's missing.
1050 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1057 AC_SUBST(ranlib_flags)
1061 # See if cmp has --ignore-initial.
1062 gcc_AC_PROG_CMP_IGNORE_INITIAL
1064 # See if we have the mktemp command.
1065 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1067 # See if makeinfo has been installed and is modern enough
1068 # that we can use it.
1069 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1070 [GNU texinfo.* \([0-9][0-9.]*\)],
1071 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1072 if test $gcc_cv_prog_makeinfo_modern = no; then
1074 *** Makeinfo is missing or too old.
1075 *** Info documentation will not be built.])
1080 AC_SUBST(BUILD_INFO)
1082 # Is pod2man recent enough to regenerate manpages?
1083 AC_MSG_CHECKING([for recent Pod::Man])
1084 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1086 GENERATED_MANPAGES=generated-manpages
1091 AC_SUBST(GENERATED_MANPAGES)
1093 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1096 dnl Don't use AC_PROG_LEX; we insist on flex.
1097 dnl LEXLIB is not useful in gcc.
1098 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1101 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1103 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1104 # check for build == host before using them.
1107 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1108 && test -d ../binutils ; then
1109 NM='${objdir}/../binutils/nm-new'
1111 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1115 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1116 && test -d ../binutils ; then
1117 AR='${objdir}/../binutils/ar'
1119 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1122 # The jit documentation looks better if built with sphinx, but can be
1123 # built with texinfo if sphinx is not available.
1124 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1125 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1127 # --------------------
1128 # Checks for C headers
1129 # --------------------
1131 # Need to reject headers which give warnings, so that the -Werror bootstrap
1132 # works later. *sigh* This needs to come before all header checks.
1139 AC_HEADER_TIOCGWINSZ
1140 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1141 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1142 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1143 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1145 # Check for thread headers.
1146 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1147 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1149 # These tests can't be done till we know if we have limits.h.
1153 # ----------------------
1154 # Checks for C++ headers
1155 # ----------------------
1157 dnl Autoconf will give an error in the configure script if there is no
1158 dnl C++ preprocessor. Hack to prevent that.
1159 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1161 m4_popdef([AC_MSG_ERROR])[]dnl
1163 AC_CHECK_HEADERS(unordered_map)
1164 AC_CHECK_HEADERS(tr1/unordered_map)
1165 AC_CHECK_HEADERS(ext/hash_map)
1168 # Dependency checking.
1172 AC_CONFIG_COMMANDS([gccdepdir],[
1173 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1174 for lang in $subdirs c-family common
1176 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1177 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1179 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1186 # These libraries may be used by collect2.
1187 # We may need a special search path to get them linked.
1188 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1190 for libs in '' -lld -lmld \
1191 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1192 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1195 AC_TRY_LINK_FUNC(ldopen,
1196 [gcc_cv_collect2_libs="$libs"; break])
1199 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1200 case $gcc_cv_collect2_libs in
1202 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1204 AC_SUBST(COLLECT2_LIBS)
1206 # When building Ada code on Alpha, we need exc_resume which is usually in
1207 # -lexc. So test for it.
1210 AC_SEARCH_LIBS(exc_resume, exc)
1213 AC_SUBST(GNAT_LIBEXC)
1215 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1218 AC_SEARCH_LIBS(kstat_open, kstat)
1219 EXTRA_GCC_LIBS="$LIBS"
1221 AC_SUBST(EXTRA_GCC_LIBS)
1223 # Some systems put ldexp and frexp in libm instead of libc; assume
1224 # they're both in the same place. jcf-dump needs them.
1227 AC_SEARCH_LIBS(ldexp, m)
1232 # Use <inttypes.h> only if it exists,
1233 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1235 AC_MSG_CHECKING(for inttypes.h)
1236 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1237 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1238 [[#define __STDC_FORMAT_MACROS
1239 #include <sys/types.h>
1240 #include <inttypes.h>]],
1245 [gcc_cv_header_inttypes_h=yes],
1246 [gcc_cv_header_inttypes_h=no])])
1247 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1248 if test $gcc_cv_header_inttypes_h = yes; then
1249 AC_DEFINE(HAVE_INTTYPES_H, 1,
1250 [Define if you have a working <inttypes.h> header file.])
1253 dnl Disabled until we have a complete test for buggy enum bitfields.
1254 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1256 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1257 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1258 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1259 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1260 putchar_unlocked putc_unlocked)
1261 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1262 popen sysconf strsignal getrusage nl_langinfo \
1263 gettimeofday mbstowcs wcswidth mmap setlocale \
1264 gcc_UNLOCKED_FUNCS madvise)
1266 if test x$ac_cv_func_mbstowcs = xyes; then
1267 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1268 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1274 [gcc_cv_func_mbstowcs_works=yes],
1275 [gcc_cv_func_mbstowcs_works=no],
1276 [gcc_cv_func_mbstowcs_works=yes])])
1277 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1278 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1279 [Define this macro if mbstowcs does not crash when its
1280 first argument is NULL.])
1284 AC_CHECK_TYPE(ssize_t, int)
1285 AC_CHECK_TYPE(caddr_t, char *)
1287 GCC_AC_FUNC_MMAP_BLACKLIST
1291 # Under VMS, vfork works very differently than on Unix. The standard test
1292 # won't work, and it isn't easily adaptable. It makes more sense to
1294 ac_cv_func_vfork_works=yes
1301 # Until we have in-tree GNU iconv:
1303 if test -f "$LTLIBICONV"; then
1304 LIBICONV_DEP=$LTLIBICONV
1306 AC_SUBST(LIBICONV_DEP)
1312 # We will need to find libiberty.h and ansidecl.h
1313 saved_CFLAGS="$CFLAGS"
1314 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1315 saved_CXXFLAGS="$CXXFLAGS"
1316 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1318 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1319 # normal autoconf function for these. But force definition of
1320 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1321 # basename handling in libiberty.h.
1322 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1323 #undef HAVE_DECL_BASENAME
1324 #define HAVE_DECL_BASENAME 1
1325 #include "ansidecl.h"
1326 #include "system.h"])
1328 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1329 madvise stpcpy strnlen strsignal strverscmp \
1330 strtol strtoul strtoll strtoull setenv unsetenv \
1331 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1332 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1333 #include "ansidecl.h"
1334 #include "system.h"])
1336 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1337 #include "ansidecl.h"
1339 #ifdef HAVE_SYS_RESOURCE_H
1340 #include <sys/resource.h>
1344 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1345 #include "ansidecl.h"
1347 #ifdef HAVE_SYS_RESOURCE_H
1348 #include <sys/resource.h>
1350 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1351 [Define to `long' if <sys/resource.h> doesn't define.])])
1353 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1354 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1355 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1356 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1357 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1358 #include "ansidecl.h"
1367 gcc_AC_CHECK_DECLS(times, , ,[
1368 #include "ansidecl.h"
1370 #ifdef HAVE_SYS_TIMES_H
1371 #include <sys/times.h>
1375 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1376 #include "ansidecl.h"
1381 # More time-related stuff.
1382 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1383 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1384 #include "ansidecl.h"
1386 #ifdef HAVE_SYS_TIMES_H
1387 #include <sys/times.h>
1389 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1390 if test $ac_cv_struct_tms = yes; then
1391 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1392 [Define if <sys/times.h> defines struct tms.])
1395 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1396 # revisit after autoconf 2.50.
1397 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1398 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1399 #include "ansidecl.h"
1401 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1402 if test $gcc_cv_type_clock_t = yes; then
1403 AC_DEFINE(HAVE_CLOCK_T, 1,
1404 [Define if <time.h> defines clock_t.])
1407 # Check if F_SETLKW is supported by fcntl.
1408 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1409 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1410 #include <fcntl.h>]], [[
1416 return fcntl (1, F_SETLKW, &fl);]])],
1417 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1418 if test $ac_cv_f_setlkw = yes; then
1419 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1420 [Define if F_SETLKW supported by fcntl.])
1423 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1424 CFLAGS="$saved_CFLAGS"
1425 CXXFLAGS="$saved_CXXFLAGS"
1427 # mkdir takes a single argument on some systems.
1428 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1436 # With Setjmp/Longjmp based exception handling.
1437 AC_ARG_ENABLE(sjlj-exceptions,
1438 [AS_HELP_STRING([--enable-sjlj-exceptions],
1439 [arrange to use setjmp/longjmp exception handling])],
1442 if test $enableval != yes; then
1443 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1448 force_sjlj_exceptions=yes],
1451 force_sjlj_exceptions=yes
1455 force_sjlj_exceptions=yes
1459 force_sjlj_exceptions=no
1462 if test $force_sjlj_exceptions = yes; then
1463 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1464 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1465 [Define 0/1 to force the choice for exception handling model.])
1468 # --------------------------------------------------------
1469 # Build, host, and target specific configuration fragments
1470 # --------------------------------------------------------
1472 # Collect build-machine-specific information.
1473 . ${srcdir}/config.build || exit 1
1475 # Collect host-machine-specific information.
1476 . ${srcdir}/config.host || exit 1
1480 # Collect target-machine-specific information.
1481 . ${srcdir}/config.gcc || exit 1
1483 extra_objs="${host_extra_objs} ${extra_objs}"
1484 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1486 # Default the target-machine variables that were not explicitly set.
1487 if test x"$tm_file" = x
1488 then tm_file=$cpu_type/$cpu_type.h; fi
1490 if test x"$extra_headers" = x
1491 then extra_headers=; fi
1493 if test x$md_file = x
1494 then md_file=$cpu_type/$cpu_type.md; fi
1496 if test x$out_file = x
1497 then out_file=$cpu_type/$cpu_type.c; fi
1499 if test x"$tmake_file" = x
1500 then tmake_file=$cpu_type/t-$cpu_type
1503 # Support --enable-initfini-array.
1504 if test x$enable_initfini_array != xno; then
1505 tm_file="${tm_file} initfini-array.h"
1508 if test x"$dwarf2" = xyes
1509 then tm_file="$tm_file tm-dwarf2.h"
1512 # Say what files are being used for the output code and MD file.
1513 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1514 echo "Using \`$srcdir/config/$md_file' as machine description file."
1516 # If any of the xm_file variables contain nonexistent files, warn
1517 # about them and drop them.
1520 for x in $build_xm_file; do
1521 if test -f $srcdir/config/$x
1523 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1529 for x in $host_xm_file; do
1530 if test -f $srcdir/config/$x
1532 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1538 for x in $xm_file; do
1539 if test -f $srcdir/config/$x
1541 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1547 for f in $tm_file; do
1550 if test $count = ax; then
1551 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1553 echo "Using the following target machine macro files:"
1554 for f in $tm_file; do
1555 echo " $srcdir/config/$f"
1559 if test x$use_long_long_for_widest_fast_int = xyes; then
1560 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1561 [Define to 1 if the 'long long' type is wider than 'long' but still
1562 efficiently supported by the host hardware.])
1565 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1566 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1568 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1569 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1572 for f in $host_xm_file; do
1575 if test $count = a; then
1577 elif test $count = ax; then
1578 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1580 echo "Using the following host machine macro files:"
1581 for f in $host_xm_file; do
1582 echo " $srcdir/config/$f"
1585 echo "Using ${out_host_hook_obj} for host machine hooks."
1587 if test "$host_xm_file" != "$build_xm_file"; then
1589 for f in $build_xm_file; do
1592 if test $count = a; then
1594 elif test $count = ax; then
1595 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1597 echo "Using the following build machine macro files:"
1598 for f in $build_xm_file; do
1599 echo " $srcdir/config/$f"
1604 if test -n "$configured_native_system_header_dir"; then
1605 native_system_header_dir=$configured_native_system_header_dir
1607 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1608 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1612 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1613 gcc_cv_mcontext_underscores,
1615 #include <sys/cdefs.h>
1616 #include <sys/signal.h>
1617 #include <ucontext.h>
1618 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1620 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1621 if test $gcc_cv_mcontext_underscores = yes; then
1622 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1623 [mcontext_t fields start with __])
1632 # Check if a valid thread package
1633 case ${enable_threads} in
1636 target_thread_file='single'
1640 target_thread_file='single'
1642 aix | dce | lynx | mipssde | posix | rtems | \
1643 single | tpf | vxworks | win32)
1644 target_thread_file=${enable_threads}
1647 echo "${enable_threads} is an unknown thread package" 1>&2
1652 if test x${thread_file} = x; then
1653 # No thread file set by target-specific clauses in config.gcc,
1654 # so use file chosen by default logic above
1655 thread_file=${target_thread_file}
1663 if test x$enable___cxa_atexit = xyes || \
1664 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1665 if test x$host = x$target; then
1667 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1668 # keyed to flag_use_cxa_atexit
1676 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1677 [echo "__cxa_atexit can't be enabled on this target"])
1681 # We can't check for __cxa_atexit when building a cross, so assume
1685 if test x$use_cxa_atexit = xyes; then
1686 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1687 [Define if you want to use __cxa_atexit, rather than atexit, to
1688 register C++ destructors for local statics and global objects.
1689 This is essential for fully standards-compliant handling of
1690 destructors, but requires __cxa_atexit in libc.])
1694 # Look for a file containing extra machine modes.
1695 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1696 extra_modes_file='$(srcdir)'/config/${extra_modes}
1697 AC_SUBST(extra_modes_file)
1698 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1699 [Define to the name of a file containing a list of extra machine modes
1700 for this architecture.])
1703 # Convert extra_options into a form suitable for Makefile use.
1706 for f in $extra_options; do
1707 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1708 all_opt_files="$all_opt_files $srcdir/config/$f"
1710 AC_SUBST(extra_opt_files)
1712 # auto-host.h is the file containing items generated by autoconf and is
1713 # the first file included by config.h.
1714 # If host=build, it is correct to have bconfig include auto-host.h
1715 # as well. If host!=build, we are in error and need to do more
1716 # work to find out the build config parameters.
1717 if test x$host = x$build
1719 build_auto=auto-host.h
1721 # We create a subdir, then run autoconf in the subdir.
1722 # To prevent recursion we set host and build for the new
1723 # invocation of configure to the build for this invocation
1730 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1731 *) realsrcdir=../${srcdir};;
1733 # Clearing GMPINC is necessary to prevent host headers being
1734 # used by the build compiler. Defining GENERATOR_FILE stops
1735 # system.h from including gmp.h.
1736 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1737 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1738 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1739 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1740 ${realsrcdir}/configure \
1741 --enable-languages=${enable_languages-all} \
1742 --target=$target_alias --host=$build_alias --build=$build_alias
1744 # We just finished tests for the build machine, so rename
1745 # the file auto-build.h in the gcc directory.
1746 mv auto-host.h ../auto-build.h
1749 build_auto=auto-build.h
1751 AC_SUBST(build_subdir)
1753 tm_file="${tm_file} defaults.h"
1754 tm_p_file="${tm_p_file} tm-preds.h"
1755 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1756 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1757 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1758 # put this back in temporarily.
1759 xm_file="auto-host.h ansidecl.h ${xm_file}"
1766 # Compile in configure arguments.
1767 if test -f configargs.h ; then
1768 # Being re-configured.
1769 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1770 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1771 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1772 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1775 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1778 # Double all backslashes and backslash all quotes to turn
1779 # gcc_config_arguments into a C string.
1780 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1781 $gcc_config_arguments
1783 gcc_config_arguments_str=`cat conftest.out`
1786 cat > configargs.h <<EOF
1787 /* Generated automatically. */
1788 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1789 static const char thread_model[] = "$thread_file";
1791 static const struct {
1792 const char *name, *value;
1793 } configure_default_options[] = $configure_default_options;
1798 gcc_BASEVER=`cat $srcdir/BASE-VER`
1799 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1800 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1801 if test -f $srcdir/REVISION ; then
1802 gcc_REVISION=`cat $srcdir/REVISION`
1806 cat > plugin-version.h <<EOF
1807 #include "configargs.h"
1809 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1810 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1811 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1812 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1814 static char basever[] = "$gcc_BASEVER";
1815 static char datestamp[] = "$gcc_DATESTAMP";
1816 static char devphase[] = "$gcc_DEVPHASE";
1817 static char revision[] = "$gcc_REVISION";
1819 /* FIXME plugins: We should make the version information more precise.
1820 One way to do is to add a checksum. */
1822 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1824 configuration_arguments};
1828 # Determine what GCC version number to use in filesystem paths.
1831 # Internationalization
1832 ZW_GNU_GETTEXT_SISTER_DIR
1834 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1835 # -liconv on the link line twice.
1836 case "$LIBINTL" in *$LIBICONV*)
1840 AC_ARG_ENABLE(secureplt,
1841 [AS_HELP_STRING([--enable-secureplt],
1842 [enable -msecure-plt by default for PowerPC])],
1845 AC_ARG_ENABLE(mingw-wildcard,
1846 [AS_HELP_STRING([--enable-mingw-wildcard],
1847 [Set whether to expand wildcard on command-line.
1848 Default to platform configuration])],
1849 [],[enable_mingw_wildcard=platform])
1850 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1851 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1852 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1853 [Value to set mingw's _dowildcard to.])])
1855 AC_ARG_ENABLE(large-address-aware,
1856 [AS_HELP_STRING([--enable-large-address-aware],
1857 [Link mingw executables with --large-address-aware])])
1858 AS_IF([test x"$enable_large_address_aware" = xyes],
1859 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1860 [Define if we should link mingw executables with --large-address-aware])])
1862 AC_ARG_ENABLE(leading-mingw64-underscores,
1863 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1864 [enable leading underscores on 64 bit mingw targets]),
1866 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1867 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1868 [Define if we should use leading underscore on 64 bit mingw targets])])
1871 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1874 AC_ARG_ENABLE(frame-pointer,
1875 [AS_HELP_STRING([--enable-frame-pointer],
1876 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1879 linux* | darwin[[8912]]*)
1880 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1882 enable_frame_pointer=no
1885 enable_frame_pointer=yes
1890 # Windows32 Registry support for specifying GCC installation paths.
1891 AC_ARG_ENABLE(win32-registry,
1892 [AS_HELP_STRING([--disable-win32-registry],
1893 [disable lookup of installation paths in the
1894 Registry on Windows hosts])
1895 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1896 AS_HELP_STRING([--enable-win32-registry=KEY],
1897 [use KEY instead of GCC version as the last portion
1898 of the registry key])],,)
1901 win32 | pe | cygwin* | mingw32*)
1902 if test "x$enable_win32_registry" != xno; then
1903 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1906 if test "x$enable_win32_registry" != xno; then
1907 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1908 [Define to 1 if installation paths should be looked up in the Windows
1909 Registry. Ignored on non-Windows hosts.])
1911 if test "x$enable_win32_registry" != xyes \
1912 && test "x$enable_win32_registry" != x; then
1913 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1914 [Define to be the last component of the Windows registry key under which
1915 to look for installation paths. The full key used will be
1916 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1917 The default is the GCC version number.])
1923 # Get an absolute path to the GCC top-level source directory
1924 holddir=`${PWDCMD-pwd}`
1926 topdir=`${PWDCMD-pwd}`
1929 # Conditionalize the makefile for this host machine.
1931 for f in ${host_xmake_file}
1933 if test -f ${srcdir}/config/$f
1935 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1939 # Conditionalize the makefile for this target machine.
1941 for f in ${tmake_file}
1943 if test -f ${srcdir}/config/$f
1945 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1948 tmake_file="${tmake_file_}"
1950 out_object_file=`basename $out_file .c`.o
1951 common_out_object_file=`basename $common_out_file .c`.o
1953 tm_file_list="options.h"
1954 tm_include_list="options.h insn-constants.h"
1955 for f in $tm_file; do
1958 f=`echo $f | sed 's/^..//'`
1959 tm_file_list="${tm_file_list} $f"
1960 tm_include_list="${tm_include_list} $f"
1963 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1964 tm_include_list="${tm_include_list} $f"
1967 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1968 tm_include_list="${tm_include_list} config/$f"
1975 for f in $tm_p_file; do
1978 tm_p_file_list="${tm_p_file_list} $f"
1979 tm_p_include_list="${tm_p_include_list} $f"
1982 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1983 tm_p_include_list="${tm_p_include_list} config/$f"
1989 for f in $xm_file; do
1992 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1993 xm_include_list="${xm_include_list} $f"
1996 xm_file_list="${xm_file_list} $f"
1997 xm_include_list="${xm_include_list} $f"
2000 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2001 xm_include_list="${xm_include_list} config/$f"
2007 host_xm_include_list=
2008 for f in $host_xm_file; do
2011 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2012 host_xm_include_list="${host_xm_include_list} $f"
2015 host_xm_file_list="${host_xm_file_list} $f"
2016 host_xm_include_list="${host_xm_include_list} $f"
2019 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2020 host_xm_include_list="${host_xm_include_list} config/$f"
2026 for f in $build_xm_file; do
2029 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2030 build_xm_include_list="${build_xm_include_list} $f"
2032 auto-build.h | auto-host.h )
2033 build_xm_file_list="${build_xm_file_list} $f"
2034 build_xm_include_list="${build_xm_include_list} $f"
2037 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2038 build_xm_include_list="${build_xm_include_list} config/$f"
2043 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2044 # cross-compiler which does not use the native headers and libraries.
2045 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2046 CROSS= AC_SUBST(CROSS)
2047 ALL=all.internal AC_SUBST(ALL)
2048 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2049 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2051 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2052 test x$build != x$host || test "x$with_build_sysroot" != x; then
2053 if test "x$with_build_sysroot" != x; then
2054 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2056 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2059 if test x$host != x$target
2061 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2063 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2064 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2065 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2068 if test "x$with_build_sysroot" != "x"; then
2069 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2070 elif test "x$with_sysroot" = x; then
2071 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2072 elif test "x$with_sysroot" = xyes; then
2073 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2075 target_header_dir="${with_sysroot}${native_system_header_dir}"
2078 target_header_dir=${native_system_header_dir}
2081 # If this is a cross-compiler that does not
2082 # have its own set of headers then define
2085 # If this is using newlib, without having the headers available now,
2086 # then define inhibit_libc in LIBGCC2_CFLAGS.
2087 # This prevents libgcc2 from containing any code which requires libc
2089 : ${inhibit_libc=false}
2090 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2091 test x$with_newlib = xyes ; } &&
2092 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2095 AC_SUBST(inhibit_libc)
2097 # When building gcc with a cross-compiler, we need to adjust things so
2098 # that the generator programs are still built with the native compiler.
2099 # Also, we cannot run fixincludes.
2101 # These are the normal (build=host) settings:
2102 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2103 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2104 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2105 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2106 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2107 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2109 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2110 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2112 # And these apply if build != host, or we are generating coverage data
2113 if test x$build != x$host || test "x$coverage_flags" != x
2115 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2116 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2117 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2119 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2120 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2121 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2122 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2124 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2125 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2127 # Expand extra_headers to include complete path.
2128 # This substitutes for lots of t-* files.
2130 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2131 for file in ${extra_headers} ; do
2132 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2135 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2136 if test x"$use_gcc_tgmath" = xyes
2137 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2140 # Define collect2 in Makefile.
2141 case $host_can_use_collect2 in
2143 *) collect2='collect2$(exeext)' ;;
2145 AC_SUBST([collect2])
2147 # Add a definition of USE_COLLECT2 if system wants one.
2148 case $use_collect2 in
2149 no) use_collect2= ;;
2152 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2153 xm_defines="${xm_defines} USE_COLLECT2"
2154 case $host_can_use_collect2 in
2156 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2162 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2163 [Define to the name of the LTO plugin DSO that must be
2164 passed to the linker's -plugin=LIB option.])
2166 # ---------------------------
2167 # Assembler & linker features
2168 # ---------------------------
2170 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2171 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2172 # However when ld-new is first executed from the build tree, libtool will
2173 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2174 # to the build tree. While doing this we need to use the previous-stage
2175 # linker, or we have an infinite loop. The presence of a shell script as
2176 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2177 # the gcc/collect-ld script. So we need to know how libtool works, or
2178 # exec-tool will fail.
2180 m4_defun([_LT_CONFIG_COMMANDS], [])
2183 AC_SUBST(enable_fast_install)
2185 # Identify the assembler which will work hand-in-glove with the newly
2186 # built GCC, so that we can examine its features. This is the assembler
2187 # which will be driven by the driver program.
2189 # If build != host, and we aren't building gas in-tree, we identify a
2190 # build->target assembler and hope that it will have the same features
2191 # as the host->target assembler we'll be using.
2192 gcc_cv_gas_major_version=
2193 gcc_cv_gas_minor_version=
2194 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2196 m4_pattern_allow([AS_FOR_TARGET])dnl
2197 AS_VAR_SET_IF(gcc_cv_as,, [
2198 if test -x "$DEFAULT_ASSEMBLER"; then
2199 gcc_cv_as="$DEFAULT_ASSEMBLER"
2200 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2201 && test -f ../gas/Makefile \
2202 && test x$build = x$host; then
2203 gcc_cv_as=../gas/as-new$build_exeext
2204 elif test -x as$build_exeext; then
2205 # Build using assembler in the current directory.
2206 gcc_cv_as=./as$build_exeext
2207 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2208 gcc_cv_as="$AS_FOR_TARGET"
2210 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2213 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2214 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2215 case "$ORIGINAL_AS_FOR_TARGET" in
2216 ./as | ./as$build_exeext) ;;
2217 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2220 AC_MSG_CHECKING(what assembler to use)
2221 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2222 # Single tree build which includes gas. We want to prefer it
2223 # over whatever linker top-level may have detected, since
2224 # we'll use what we're building after installation anyway.
2225 AC_MSG_RESULT(newly built gas)
2227 _gcc_COMPUTE_GAS_VERSION
2228 in_tree_gas_is_elf=no
2229 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2230 || (grep 'obj_format = multi' ../gas/Makefile \
2231 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2233 in_tree_gas_is_elf=yes
2236 AC_MSG_RESULT($gcc_cv_as)
2242 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2243 [case "${enableval}" in
2249 install_gold_as_default=no
2251 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2252 [case "${enableval}" in
2254 install_gold_as_default=yes
2257 if test x${default_ld} != x; then
2258 install_gold_as_default=yes
2264 AC_MSG_ERROR([invalid --enable-gold argument])
2268 # Identify the linker which will work hand-in-glove with the newly
2269 # built GCC, so that we can examine its features. This is the linker
2270 # which will be driven by the driver program.
2272 # If build != host, and we aren't building gas in-tree, we identify a
2273 # build->target linker and hope that it will have the same features
2274 # as the host->target linker we'll be using.
2275 gcc_cv_gld_major_version=
2276 gcc_cv_gld_minor_version=
2277 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2278 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2279 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2281 AS_VAR_SET_IF(gcc_cv_ld,, [
2282 if test -x "$DEFAULT_LINKER"; then
2283 gcc_cv_ld="$DEFAULT_LINKER"
2284 elif test $install_gold_as_default = yes \
2285 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2286 && test -f ../gold/Makefile \
2287 && test x$build = x$host; then
2288 gcc_cv_ld=../gold/ld-new$build_exeext
2289 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2290 && test -f ../ld/Makefile \
2291 && test x$build = x$host; then
2292 gcc_cv_ld=../ld/ld-new$build_exeext
2293 elif test -x collect-ld$build_exeext; then
2294 # Build using linker in the current directory.
2295 gcc_cv_ld=./collect-ld$build_exeext
2296 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2297 gcc_cv_ld="$LD_FOR_TARGET"
2299 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2302 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2303 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2304 # if the PLUGIN_LD is set ld-new, just have it as ld
2305 # as that is the installed named.
2306 if test x$PLUGIN_LD_SUFFIX = xld-new \
2307 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2310 AC_ARG_WITH(plugin-ld,
2311 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2312 [if test x"$withval" != x; then
2313 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2314 PLUGIN_LD_SUFFIX="$withval"
2316 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2317 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2319 # Check to see if we are using gold instead of ld
2320 AC_MSG_CHECKING(whether we are using gold)
2322 if test x$gcc_cv_ld != x; then
2323 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2324 | grep "GNU gold" > /dev/null; then
2328 AC_MSG_RESULT($ld_is_gold)
2330 AC_MSG_CHECKING(gold linker with split stack support as non default)
2331 # Check to see if default ld is not gold, but gold is
2332 # available and has support for split stack. If gcc was configured
2333 # with gold then no checking is done.
2335 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2337 # For platforms other than powerpc64*, enable as appropriate.
2340 ld_gold=`which ${gcc_cv_ld}.gold`
2341 # Make sure this gold has minimal split stack support
2342 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2343 ld_vers=`$ld_gold --version | sed 1q`
2344 gold_vers=`echo $ld_vers | sed -n \
2345 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2347 # check that the gold version contains the complete split stack support
2348 # on powerpc64 big and little endian
2350 case "$gold_vers" in
2351 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2353 *) gold_non_default=no
2359 if test $gold_non_default = yes; then
2360 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2361 [Define if the gold linker supports split stack and is available as a non-default])
2364 AC_MSG_RESULT($gold_non_default)
2366 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2367 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2368 case "$ORIGINAL_LD_FOR_TARGET" in
2369 ./collect-ld | ./collect-ld$build_exeext) ;;
2370 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2373 AC_MSG_CHECKING(what linker to use)
2374 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2375 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2376 # Single tree build which includes ld. We want to prefer it
2377 # over whatever linker top-level may have detected, since
2378 # we'll use what we're building after installation anyway.
2379 AC_MSG_RESULT(newly built ld)
2381 in_tree_ld_is_elf=no
2382 if (grep 'EMUL = .*elf' ../ld/Makefile \
2383 || grep 'EMUL = .*linux' ../ld/Makefile \
2384 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2385 in_tree_ld_is_elf=yes
2386 elif test "$ld_is_gold" = yes; then
2387 in_tree_ld_is_elf=yes
2389 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
2392 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2393 if test x$gcc_cv_gld_version != x; then
2397 case $gcc_cv_gld_version in
2400 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2403 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2404 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2406 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2407 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2409 AC_MSG_RESULT($gcc_cv_ld)
2411 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2412 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2413 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2416 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2417 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2419 # Figure out what nm we will be using.
2420 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2421 AS_VAR_SET_IF(gcc_cv_nm,, [
2422 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2423 && test -f ../binutils/Makefile \
2424 && test x$build = x$host; then
2425 gcc_cv_nm=../binutils/nm-new$build_exeext
2426 elif test -x nm$build_exeext; then
2427 gcc_cv_nm=./nm$build_exeext
2428 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2429 gcc_cv_nm="$NM_FOR_TARGET"
2431 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2434 AC_MSG_CHECKING(what nm to use)
2435 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2436 # Single tree build which includes binutils.
2437 AC_MSG_RESULT(newly built nm)
2440 AC_MSG_RESULT($gcc_cv_nm)
2444 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2445 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2446 case "$ORIGINAL_NM_FOR_TARGET" in
2447 ./nm | ./nm$build_exeext) ;;
2448 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2452 # Figure out what objdump we will be using.
2453 AS_VAR_SET_IF(gcc_cv_objdump,, [
2454 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2455 && test -f ../binutils/Makefile \
2456 && test x$build = x$host; then
2457 # Single tree build which includes binutils.
2458 gcc_cv_objdump=../binutils/objdump$build_exeext
2459 elif test -x objdump$build_exeext; then
2460 gcc_cv_objdump=./objdump$build_exeext
2461 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2462 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2464 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2467 AC_MSG_CHECKING(what objdump to use)
2468 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2469 # Single tree build which includes binutils.
2470 AC_MSG_RESULT(newly built objdump)
2471 elif test x$gcc_cv_objdump = x; then
2472 AC_MSG_RESULT(not found)
2474 AC_MSG_RESULT($gcc_cv_objdump)
2477 # Figure out what readelf we will be using.
2478 AS_VAR_SET_IF(gcc_cv_readelf,, [
2479 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2480 && test -f ../binutils/Makefile \
2481 && test x$build = x$host; then
2482 # Single tree build which includes binutils.
2483 gcc_cv_readelf=../binutils/readelf$build_exeext
2484 elif test -x readelf$build_exeext; then
2485 gcc_cv_readelf=./readelf$build_exeext
2486 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2487 gcc_cv_readelf="$READELF_FOR_TARGET"
2489 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2492 AC_MSG_CHECKING(what readelf to use)
2493 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2494 # Single tree build which includes binutils.
2495 AC_MSG_RESULT(newly built readelf)
2496 elif test x$gcc_cv_readelf = x; then
2497 AC_MSG_RESULT(not found)
2499 AC_MSG_RESULT($gcc_cv_readelf)
2502 # Figure out what assembler alignment features are present.
2503 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2507 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2508 [Define if your assembler supports .balign and .p2align.])])
2510 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2513 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2514 [Define if your assembler supports specifying the maximum number
2515 of bytes to skip when using the GAS .p2align command.])])
2517 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2520 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2521 [Define if your assembler supports .literal16.])])
2523 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2525 [conftest_label1: .word 0
2527 conftest_label2: .word 0
2529 [if test x$gcc_cv_nm != x; then
2530 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2531 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2532 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2534 else gcc_cv_as_subsection_m1=yes
2536 rm -f conftest.nm1 conftest.nm2
2538 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2539 [Define if your assembler supports .subsection and .subsection -1 starts
2540 emitting at the beginning of your section.])])
2542 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2545 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2547 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2549 [ .weakref foobar, barfnot],,
2550 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2552 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2555 .NSUBSPA $CODE$,COMDAT],,
2556 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2558 # .hidden needs to be supported in both the assembler and the linker,
2559 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2560 # This is irritatingly difficult to feature test for; we have to check the
2561 # date string after the version number. If we've got an in-tree
2562 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2564 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2567 conftest_s=' .globl foobar,hidden'
2570 conftest_s=' .hidden foobar
2574 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2575 [elf,2,13,0],, [$conftest_s])
2578 # Darwin as has some visibility support, though with a different syntax.
2579 gcc_cv_as_hidden=yes
2583 # gnu_indirect_function type is an extension proposed at
2584 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2585 # selection of function implementation
2586 AC_ARG_ENABLE(gnu-indirect-function,
2587 [AS_HELP_STRING([--enable-gnu-indirect-function],
2588 [enable the use of the @gnu_indirect_function to glibc systems])],
2589 [case $enable_gnu_indirect_function in
2591 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2592 Valid choices are 'yes' and 'no'.]) ;;
2594 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2596 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2597 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2598 [Define if your system supports gnu indirect functions.])
2602 if test $in_tree_ld != yes ; then
2603 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2604 if echo "$ld_ver" | grep GNU > /dev/null; then
2605 if test x"$ld_is_gold" = xyes; then
2606 # GNU gold --version looks like this:
2608 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2610 # We extract the binutils version which is more familiar and specific
2611 # than the gold version.
2612 ld_vers=`echo $ld_ver | sed -n \
2613 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2615 # GNU ld --version looks like this:
2617 # GNU ld (GNU Binutils) 2.21.51.20110225
2618 ld_vers=`echo $ld_ver | sed -n \
2619 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2621 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2622 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2623 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2624 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2628 # Solaris 2 ld -V output looks like this for a regular version:
2630 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2632 # but test versions add stuff at the end:
2634 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2636 # In Solaris 11.4, this was changed to
2638 # ld: Solaris ELF Utilities: 11.4-1.3123
2640 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2641 # numbers can be used in ld.so.1 feature checks even if a different
2642 # linker is configured.
2643 ld_ver=`$gcc_cv_ld -V 2>&1`
2644 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2645 ld_vers=`echo $ld_ver | sed -n \
2646 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2647 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2648 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2656 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2657 [[if test $in_tree_ld = yes ; then
2659 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2660 && test $in_tree_ld_is_elf = yes; then
2661 gcc_cv_ld_hidden=yes
2664 gcc_cv_ld_hidden=yes
2665 if test x"$ld_is_gold" = xyes; then
2667 elif echo "$ld_ver" | grep GNU > /dev/null; then
2669 mmix-knuth-mmixware)
2670 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2674 if test 0"$ld_date" -lt 20020404; then
2675 if test -n "$ld_date"; then
2676 # If there was date string, but was earlier than 2002-04-04, fail
2678 elif test -z "$ld_vers"; then
2679 # If there was no date string nor ld version number, something is wrong
2682 test -z "$ld_vers_patch" && ld_vers_patch=0
2683 if test "$ld_vers_major" -lt 2; then
2685 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2686 gcc_cv_ld_hidden="no"
2687 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2695 gcc_cv_ld_hidden=yes
2698 # Darwin ld has some visibility support.
2699 gcc_cv_ld_hidden=yes
2701 hppa64*-*-hpux* | ia64*-*-hpux*)
2702 gcc_cv_ld_hidden=yes
2704 *-*-solaris2.1[0-9]*)
2705 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2706 # .symbolic was only added in Solaris 9 12/02.
2707 gcc_cv_ld_hidden=yes
2715 libgcc_visibility=no
2716 AC_SUBST(libgcc_visibility)
2717 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2718 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2719 libgcc_visibility=yes
2720 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2721 [Define if your assembler and linker support .hidden.])
2724 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2725 gcc_cv_ld_ro_rw_mix=unknown
2726 if test $in_tree_ld = yes ; then
2727 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2728 && test $in_tree_ld_is_elf = yes; then
2729 gcc_cv_ld_ro_rw_mix=read-write
2731 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2732 echo '.section myfoosect, "a"' > conftest1.s
2733 echo '.section myfoosect, "aw"' > conftest2.s
2734 echo '.byte 1' >> conftest2.s
2735 echo '.section myfoosect, "a"' > conftest3.s
2736 echo '.byte 0' >> conftest3.s
2737 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2738 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2739 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2740 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2741 conftest2.o conftest3.o > /dev/null 2>&1; then
2742 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2743 | sed -e '/myfoosect/!d' -e N`
2744 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2745 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2746 gcc_cv_ld_ro_rw_mix=read-only
2748 gcc_cv_ld_ro_rw_mix=read-write
2753 rm -f conftest.* conftest[123].*
2756 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2757 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2758 [Define if your linker links a mix of read-only
2759 and read-write sections into a read-write section.])
2761 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2763 gcc_AC_INITFINI_ARRAY
2765 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2766 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2774 [[# GAS versions before 2.11 do not support uleb128,
2775 # despite appearing to.
2776 # ??? There exists an elf-specific test that will crash
2777 # the assembler. Perhaps it's better to figure out whether
2778 # arbitrary sections are supported and try the test.
2779 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2780 if echo "$as_ver" | grep GNU > /dev/null; then
2781 as_vers=`echo $as_ver | sed -n \
2782 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2783 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2784 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2785 if test $as_major -eq 2 && test $as_minor -lt 11
2787 else gcc_cv_as_leb128=yes
2790 [AC_DEFINE(HAVE_AS_LEB128, 1,
2791 [Define if your assembler supports .sleb128 and .uleb128.])],
2792 [AC_DEFINE(HAVE_AS_LEB128, 0,
2793 [Define if your assembler supports .sleb128 and .uleb128.])])
2795 # Determine if an .eh_frame section is read-only.
2796 gcc_fn_eh_frame_ro () {
2797 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2798 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2799 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2802 # Check if we have assembler support for unwind directives.
2803 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2810 .cfi_escape 1, 2, 3, 4, 5
2814 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2815 # read-only and read-write sections, we need to make sure that the
2816 # assembler used emits read-write .eh_frame sections.
2817 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2818 gcc_cv_as_cfi_directive=yes
2819 elif test "x$gcc_cv_objdump" = x; then
2820 # No objdump, err on the side of caution.
2821 gcc_cv_as_cfi_directive=no
2823 if test x$gas = xyes; then
2831 sparc*-*-solaris2.*)
2832 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2833 if gcc_fn_eh_frame_ro $as_32_opt \
2834 || gcc_fn_eh_frame_ro $as_64_opt; then
2835 gcc_cv_as_cfi_directive=no
2837 gcc_cv_as_cfi_directive=yes
2840 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2841 # On Solaris/x86, make sure that GCC and assembler agree on using
2842 # read-only .eh_frame sections for 64-bit.
2843 if gcc_fn_eh_frame_ro $as_32_opt; then
2844 gcc_cv_as_cfi_directive=no
2845 elif gcc_fn_eh_frame_ro $as_64_opt; then
2846 gcc_cv_as_cfi_directive=yes
2848 gcc_cv_as_cfi_directive=no
2855 gcc_cv_as_cfi_directive=yes
2858 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2859 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2863 .cfi_adjust_cfa_offset 64
2865 .cfi_adjust_cfa_offset 128
2868 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2869 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2870 gcc_cv_as_cfi_advance_working=yes
2874 # no objdump, err on the side of caution
2875 gcc_cv_as_cfi_advance_working=no
2877 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2878 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2879 [`if test $gcc_cv_as_cfi_directive = yes \
2880 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2881 [Define 0/1 if your assembler supports CFI directives.])
2883 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2884 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2885 gcc_cv_as_cfi_personality_directive, ,,
2888 .cfi_personality 0, symbol
2890 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2891 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2892 then echo 1; else echo 0; fi`],
2893 [Define 0/1 if your assembler supports .cfi_personality.])
2895 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2896 gcc_cv_as_cfi_sections_directive, ,,
2898 .cfi_sections .debug_frame, .eh_frame
2902 win32 | pe | cygwin* | mingw32*)
2903 # Need to check that we generated the correct relocation for the
2904 # .debug_frame section. This was fixed for binutils 2.21.
2905 gcc_cv_as_cfi_sections_directive=no
2906 if test "x$gcc_cv_objdump" != x; then
2907 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2908 grep secrel > /dev/null; then
2909 gcc_cv_as_cfi_sections_directive=yes
2914 gcc_cv_as_cfi_sections_directive=yes
2917 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2918 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2919 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2920 then echo 1; else echo 0; fi`],
2921 [Define 0/1 if your assembler supports .cfi_sections.])
2923 # GAS versions up to and including 2.11.0 may mis-optimize
2925 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2933 .section .eh_frame,"aw",@progbits
2935 .4byte .LECIE1-.LSCIE1
2949 .4byte .LEFDE1-.LASFDE1
2951 .4byte .LASFDE1-__FRAME_BEGIN__
2959 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2960 cat > conftest.lit <<EOF
2961 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2962 0010 01000000 12000000 18000000 00000000 ................
2963 0020 08000000 04080000 0044 .........D @&t@
2965 cat > conftest.big <<EOF
2966 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2967 0010 00000001 00000012 00000018 00000000 ................
2968 0020 00000008 04000000 0844 .........D @&t@
2970 # If the assembler didn't choke, and we can objdump,
2971 # and we got the correct data, then succeed.
2972 # The text in the here-document typically retains its unix-style line
2973 # endings, while the output of objdump will use host line endings.
2974 # Therefore, use diff -b for the comparisons.
2975 if test x$gcc_cv_objdump != x \
2976 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2977 | tail -3 > conftest.got \
2978 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2979 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2981 gcc_cv_as_eh_frame=yes
2982 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2983 gcc_cv_as_eh_frame=buggy
2985 # Uh oh, what do we do now?
2986 gcc_cv_as_eh_frame=no
2989 if test $gcc_cv_as_eh_frame = buggy; then
2990 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2991 [Define if your assembler mis-optimizes .eh_frame data.])
2994 # Test if the assembler supports the section flag 'e' or #exclude for
2995 # specifying an excluded section.
2996 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
2997 [2,22,51], [--fatal-warnings],
3000 if test $gcc_cv_as_section_exclude_e = no; then
3002 # Solaris as uses #exclude instead.
3006 conftest_s='.section "foo1", #exclude'
3008 i?86-*-solaris2* | x86_64-*-solaris2*)
3009 conftest_s='.section foo1, #exclude'
3014 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3018 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3019 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3020 [Define if your assembler supports specifying the exclude section flag.])
3022 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3023 [elf,2,12,0], [--fatal-warnings],
3024 [.section .rodata.str, "aMS", @progbits, 1])
3025 if test $gcc_cv_as_shf_merge = no; then
3026 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3027 [elf,2,12,0], [--fatal-warnings],
3028 [.section .rodata.str, "aMS", %progbits, 1])
3031 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
3032 # SHF_MERGE support in Solaris 10/x86 ld is broken.
3033 if test x"$gnu_ld" = xno; then
3034 gcc_cv_as_shf_merge=no
3038 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3039 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3040 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3042 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3043 [.stabs "gcc2_compiled.",60,0,0,0],,
3044 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3045 [Define if your assembler supports .stabs.])])
3047 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3048 gcc_cv_as_comdat_group,
3049 [elf,2,16,0], [--fatal-warnings],
3050 [.section .text,"axG",@progbits,.foo,comdat])
3051 if test $gcc_cv_as_comdat_group = yes; then
3052 gcc_cv_as_comdat_group_percent=no
3053 gcc_cv_as_comdat_group_group=no
3055 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3056 gcc_cv_as_comdat_group_percent,
3057 [elf,2,16,0], [--fatal-warnings],
3058 [.section .text,"axG",%progbits,.foo,comdat])
3059 if test $gcc_cv_as_comdat_group_percent = yes; then
3060 gcc_cv_as_comdat_group_group=no
3063 # Sun as uses a completely different syntax.
3068 .group foo,".text%foo",#comdat
3069 .section ".text%foo", #alloc,#execinstr,#progbits
3074 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3076 .group foo,.text%foo,#comdat
3077 .section .text%foo, "ax", @progbits
3083 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3084 gcc_cv_as_comdat_group_group,
3088 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3089 gcc_cv_as_comdat_group_group=no
3093 if test x"$ld_is_gold" = xyes; then
3095 elif test $in_tree_ld = yes ; then
3097 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3098 && test $in_tree_ld_is_elf = yes; then
3101 elif echo "$ld_ver" | grep GNU > /dev/null; then
3103 if test 0"$ld_date" -lt 20050308; then
3104 if test -n "$ld_date"; then
3105 # If there was date string, but was earlier than 2005-03-08, fail
3107 elif test "$ld_vers_major" -lt 2; then
3109 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3116 *-*-solaris2.1[1-9]*)
3118 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3119 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3122 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3123 # least ld version 1.2267.
3124 if test "$ld_vers_major" -gt 1; then
3126 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3128 elif test "$ld_vers_minor" -ge 2267; then
3133 # Assume linkers other than GNU ld don't support COMDAT group.
3139 # Allow overriding the automatic COMDAT group tests above.
3140 AC_ARG_ENABLE(comdat,
3141 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3142 [comdat_group="$enable_comdat"])
3143 if test $comdat_group = no; then
3144 gcc_cv_as_comdat_group=no
3145 gcc_cv_as_comdat_group_percent=no
3146 gcc_cv_as_comdat_group_group=no
3148 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3149 [`if test $gcc_cv_as_comdat_group = yes \
3150 || test $gcc_cv_as_comdat_group_percent = yes \
3151 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3152 [Define 0/1 if your assembler and linker support COMDAT groups.])
3154 # Restrict this test to Solaris/x86: other targets define this statically.
3156 i?86-*-solaris2* | x86_64-*-solaris2*)
3157 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3158 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3162 # Full support for hidden thunks in linkonce sections only appeared in
3163 # Solaris 11/OpenSolaris.
3164 *-*-solaris2.1[[1-9]]*)
3172 AC_MSG_RESULT($hidden_linkonce)
3173 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3174 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3175 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3179 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3184 .loc 1 1 0 is_stmt 1],,
3185 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3186 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3188 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3189 gcc_cv_as_discriminator,
3193 .loc 1 1 0 discriminator 1],,
3194 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3195 [Define if your assembler supports the .loc discriminator sub-directive.])])
3197 # Thread-local storage - the check is heavily parameterized.
3206 .section ".tdata","awT",@progbits
3209 ldq $27,__tls_get_addr($29) !literal!1
3210 lda $16,foo($29) !tlsgd!1
3211 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3212 ldq $27,__tls_get_addr($29) !literal!2
3213 lda $16,foo($29) !tlsldm!2
3214 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3215 ldq $1,foo($29) !gotdtprel
3216 ldah $2,foo($29) !dtprelhi
3217 lda $3,foo($2) !dtprello
3218 lda $4,foo($29) !dtprel
3219 ldq $1,foo($29) !gottprel
3220 ldah $2,foo($29) !tprelhi
3221 lda $3,foo($2) !tprello
3222 lda $4,foo($29) !tprel'
3225 tls_as_opt=--fatal-warnings
3229 add_s r0,r0, @foo@tpoff'
3233 cris-*-*|crisv32-*-*)
3235 .section ".tdata","awT",@progbits
3242 tls_as_opt=--fatal-warnings
3246 .section ".tdata","awT",@progbits
3258 .section ".tdata","awT",@progbits
3262 addil LT%foo-$tls_gdidx$,gp
3263 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3266 addil LT%foo-$tls_ldidx$,gp
3268 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3269 addil LR%foo-$tls_dtpoff$,%ret0
3270 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3272 addil LT%foo-$tls_ieoff$,gp
3273 ldw RT%foo-$tls_ieoff$(%r1),%t2
3276 addil LR%foo-$tls_leoff$,%t1
3277 ldo RR%foo-$tls_leoff$(%r1),%t2'
3280 tls_as_opt=--fatal-warnings
3284 .section ".tdata","awT",%progbits
3295 i[34567]86-*-* | x86_64-*-*)
3297 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3304 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3306 .section .tdata,"awt",@progbits'
3311 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3312 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3316 .section ".tdata","awT",@progbits'
3320 tls_as_opt="--fatal-warnings"
3324 conftest_s="$conftest_s
3328 leal foo@tlsgd(,%ebx,1), %eax
3329 leal foo@tlsldm(%ebx), %eax
3330 leal foo@dtpoff(%eax), %edx
3331 movl foo@gottpoff(%ebx), %eax
3332 subl foo@gottpoff(%ebx), %eax
3333 addl foo@gotntpoff(%ebx), %eax
3334 movl foo@indntpoff, %eax
3335 movl \$foo@tpoff, %eax
3336 subl \$foo@tpoff, %eax
3337 leal foo@ntpoff(%ecx), %eax"
3340 if test x$on_solaris = xyes; then
3342 yes) tls_as_opt="$tls_as_opt --64" ;;
3343 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3346 conftest_s="$conftest_s
3350 leaq foo@tlsgd(%rip), %rdi
3351 leaq foo@tlsld(%rip), %rdi
3352 leaq foo@dtpoff(%rax), %rdx
3353 movq foo@gottpoff(%rip), %rax
3354 movq \$foo@tpoff, %rax"
3360 .section ".tdata","awT",@progbits
3363 addl r16 = @ltoff(@dtpmod(foo#)), gp
3364 addl r17 = @ltoff(@dtprel(foo#)), gp
3365 addl r18 = @ltoff(@tprel(foo#)), gp
3366 addl r19 = @dtprel(foo#), gp
3367 adds r21 = @dtprel(foo#), r13
3368 movl r23 = @dtprel(foo#)
3369 addl r20 = @tprel(foo#), gp
3370 adds r22 = @tprel(foo#), r13
3371 movl r24 = @tprel(foo#)'
3374 tls_as_opt=--fatal-warnings
3378 .section .tdata,"awT",@progbits
3382 addik r5,r20,x@TLSGD
3383 addik r5,r20,x@TLSLDM'
3386 tls_as_opt='--fatal-warnings'
3390 .section .tdata,"awT",@progbits
3394 addiu $4, $28, %tlsgd(x)
3395 addiu $4, $28, %tlsldm(x)
3396 lui $4, %dtprel_hi(x)
3397 addiu $4, $4, %dtprel_lo(x)
3398 lw $4, %gottprel(x)($28)
3399 lui $4, %tprel_hi(x)
3400 addiu $4, $4, %tprel_lo(x)'
3403 tls_as_opt='-32 --fatal-warnings'
3407 .section .tdata,"awT",@progbits
3412 move.l x@TLSGD(%a5),%a0
3413 move.l x@TLSLDM(%a5),%a0
3414 move.l x@TLSLDO(%a5),%a0
3415 move.l x@TLSIE(%a5),%a0
3416 move.l x@TLSLE(%a5),%a0'
3419 tls_as_opt='--fatal-warnings'
3423 .section ".tdata","awT",@progbits'
3426 tls_as_opt="--fatal-warnings"
3430 .section ".tdata","awT",%progbits
3434 add x0, x0, #:tlsgd_lo12:x
3439 tls_as_opt='--fatal-warnings'
3443 .extern __get_tpointer
3461 .section ".tdata","awT",@progbits
3469 addi 3,2,ld0@got@tlsgd
3475 addi 3,2,x1@got@tlsld
3481 addis 9,3,x2@dtprel@ha
3482 addi 9,9,x2@dtprel@l
3485 ld 9,x3@got@dtprel(2)
3491 tls_as_opt="-a64 --fatal-warnings"
3495 .section ".tdata","awT",@progbits
3503 addi 3,31,ld0@got@tlsgd
3505 addi 3,31,x1@got@tlsld
3508 addis 9,3,x2@dtprel@ha
3509 addi 9,9,x2@dtprel@l
3510 lwz 9,x3@got@tprel(31)
3513 addis 9,2,x2@tprel@ha
3514 addi 9,9,x2@tprel@l'
3517 tls_as_opt="-a32 --fatal-warnings"
3521 .section .tdata,"awT",@progbits
3525 call __tls_get_addr'
3528 tls_as_opt='--fatal-warnings'
3532 .section ".tdata","awT",@progbits
3541 l %r1,foo@GOTNTPOFF(%r12)
3542 l %r1,0(%r1):tls_load:foo
3543 bas %r14,0(%r1,%r13):tls_gdcall:foo
3544 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3547 tls_as_opt="-m31 --fatal-warnings"
3551 .section ".tdata","awT",@progbits
3559 lg %r1,foo@GOTNTPOFF(%r12)
3560 larl %r1,foo@INDNTPOFF
3561 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3562 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3565 tls_as_opt="-m64 -Aesame --fatal-warnings"
3567 sh-*-* | sh[123456789lbe]*-*-*)
3569 .section ".tdata","awT",@progbits
3579 tls_as_opt=--fatal-warnings
3583 sparc*-sun-solaris2.*)
3590 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3592 .section ".tdata",#alloc,#write,#tls'
3597 .section ".tdata","awT",@progbits'
3600 tls_as_opt="-32 --fatal-warnings"
3602 conftest_s="$conftest_s
3605 sethi %tgd_hi22(foo), %o0
3606 add %o0, %tgd_lo10(foo), %o1
3607 add %l7, %o1, %o0, %tgd_add(foo)
3608 call __tls_get_addr, %tgd_call(foo)
3609 sethi %tldm_hi22(foo), %l1
3610 add %l1, %tldm_lo10(foo), %l2
3611 add %l7, %l2, %o0, %tldm_add(foo)
3612 call __tls_get_addr, %tldm_call(foo)
3613 sethi %tldo_hix22(foo), %l3
3614 xor %l3, %tldo_lox10(foo), %l4
3615 add %o0, %l4, %l5, %tldo_add(foo)
3616 sethi %tie_hi22(foo), %o3
3617 add %o3, %tie_lo10(foo), %o3
3618 ld [%l7 + %o3], %o2, %tie_ld(foo)
3619 add %g7, %o2, %o4, %tie_add(foo)
3620 sethi %tle_hix22(foo), %l1
3621 xor %l1, %tle_lox10(foo), %o5
3622 ld [%g7 + %o5], %o1"
3626 .section ".tdata","awT",@progbits
3629 addli r0, zero, tls_gd(foo)
3630 auli r0, zero, tls_gd_ha16(foo)
3631 addli r0, r0, tls_gd_lo16(foo)
3633 addli r0, zero, tls_ie(foo)
3634 auli r0, r0, tls_ie_ha16(foo)
3635 addli r0, r0, tls_ie_lo16(foo)'
3638 tls_as_opt="--fatal-warnings"
3642 .section ".tdata","awT",@progbits
3645 shl16insli r0, zero, hw0_last_tls_gd(foo)
3646 shl16insli r0, zero, hw1_last_tls_gd(foo)
3647 shl16insli r0, r0, hw0_tls_gd(foo)
3649 shl16insli r0, zero, hw1_last_tls_ie(foo)
3650 shl16insli r0, r0, hw0_tls_ie(foo)'
3653 tls_as_opt="--fatal-warnings"
3657 .section ".tdata","awT",@progbits
3660 movi a8, foo@TLSFUNC
3661 movi a10, foo@TLSARG
3662 callx8.tls a8, foo@TLSCALL'
3669 if test "x$enable_tls" = xno ; then
3670 : # TLS explicitly disabled.
3671 elif test "x$enable_tls" = xyes ; then
3672 set_have_as_tls=yes # TLS explicitly enabled.
3673 elif test -z "$tls_first_major"; then
3674 : # If we don't have a check, assume no support.
3676 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3677 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3678 [set_have_as_tls=yes])
3680 if test $set_have_as_tls = yes ; then
3681 AC_DEFINE(HAVE_AS_TLS, 1,
3682 [Define if your assembler and linker support thread-local storage.])
3685 # Target-specific assembler checks.
3687 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3688 gcc_cv_ld_static_dynamic=no
3689 gcc_cv_ld_static_option='-Bstatic'
3690 gcc_cv_ld_dynamic_option='-Bdynamic'
3691 if test $in_tree_ld = yes ; then
3692 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3693 gcc_cv_ld_static_dynamic=yes
3695 elif test x$gcc_cv_ld != x; then
3696 # Check if linker supports -Bstatic/-Bdynamic option
3697 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3698 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3699 gcc_cv_ld_static_dynamic=yes
3702 # AIX ld uses -b flags
3703 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3704 gcc_cv_ld_static_dynamic=yes
3705 gcc_cv_ld_static_option="-bstatic"
3706 gcc_cv_ld_dynamic_option="-bdynamic"
3708 # HP-UX ld uses -a flags to select between shared and archive.
3710 if test x"$gnu_ld" = xno; then
3711 gcc_cv_ld_static_dynamic=yes
3712 gcc_cv_ld_static_option="-aarchive_shared"
3713 gcc_cv_ld_dynamic_option="-adefault"
3716 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3718 gcc_cv_ld_static_dynamic=yes
3723 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3724 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3725 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3726 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3727 [Define to the linker option to disable use of shared objects.])
3728 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3729 [Define to the linker option to enable use of shared objects.])
3731 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3733 AC_MSG_CHECKING(linker --version-script option)
3734 gcc_cv_ld_version_script=no
3735 ld_version_script_option=''
3736 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3737 gcc_cv_ld_version_script=yes
3738 ld_version_script_option='--version-script'
3739 elif test x$gcc_cv_ld != x; then
3741 # Solaris 2 ld always supports -M. It also supports a subset of
3742 # --version-script since Solaris 11.4, but requires
3743 # -z gnu-version-script-compat to activate.
3745 gcc_cv_ld_version_script=yes
3746 ld_version_script_option='-M'
3750 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3751 AC_MSG_RESULT($gcc_cv_ld_version_script)
3752 AC_SUBST(ld_version_script_option)
3754 AC_MSG_CHECKING(linker soname option)
3756 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3757 gcc_cv_ld_soname=yes
3758 ld_soname_option='-soname'
3759 elif test x$gcc_cv_ld != x; then
3762 gcc_cv_ld_soname=yes
3763 ld_soname_option='-install_name'
3765 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3766 # ld compatiblity since some Solaris 10 update.
3768 gcc_cv_ld_soname=yes
3769 ld_soname_option='-h'
3773 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3774 AC_MSG_RESULT($gcc_cv_ld_soname)
3775 AC_SUBST(ld_soname_option)
3777 if test x"$demangler_in_ld" = xyes; then
3778 AC_MSG_CHECKING(linker --demangle support)
3779 gcc_cv_ld_demangle=no
3780 if test $in_tree_ld = yes; then
3781 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3782 gcc_cv_ld_demangle=yes
3784 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3785 # Check if the GNU linker supports --demangle option
3786 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3787 gcc_cv_ld_demangle=yes
3790 if test x"$gcc_cv_ld_demangle" = xyes; then
3791 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3792 [Define if your linker supports --demangle option.])
3794 AC_MSG_RESULT($gcc_cv_ld_demangle)
3797 AC_MSG_CHECKING(linker plugin support)
3799 if test -f liblto_plugin.la; then
3800 save_ld_ver="$ld_ver"
3801 save_ld_vers_major="$ld_vers_major"
3802 save_ld_vers_minor="$ld_vers_minor"
3803 save_ld_is_gold="$ld_is_gold"
3807 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3809 # FIXME: ld_is_gold?
3810 ld_vers_major="$gcc_cv_gld_major_version"
3811 ld_vers_minor="$gcc_cv_gld_minor_version"
3813 # Determine plugin linker version.
3814 # FIXME: Partial duplicate from above, generalize.
3816 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3817 if echo "$ld_ver" | grep GNU > /dev/null; then
3818 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3820 ld_vers=`echo $ld_ver | sed -n \
3821 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3823 ld_vers=`echo $ld_ver | sed -n \
3824 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3826 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3827 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3832 # Determine plugin support.
3833 if echo "$ld_ver" | grep GNU > /dev/null; then
3834 # Require GNU ld or gold 2.21+ for plugin support by default.
3835 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3837 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3838 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3843 ld_ver="$save_ld_ver"
3844 ld_vers_major="$save_ld_vers_major"
3845 ld_vers_minor="$save_ld_vers_minor"
3846 ld_is_gold="$save_ld_is_gold"
3848 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3849 [Define to the level of your linker's plugin support.])
3850 AC_MSG_RESULT($gcc_cv_lto_plugin)
3852 # Target OS-specific assembler checks.
3854 case "$target_os" in
3856 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3857 gcc_cv_as_mmacosx_version_min,,
3858 [-mmacosx-version-min=10.1], [.text],,
3859 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3860 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3864 # Target CPU-specific assembler checks.
3868 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3869 [-mabi=lp64], [.text],,,)
3870 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3871 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3872 [Define if your assembler supports the -mabi option.])
3874 if test x$with_abi = xilp32; then
3875 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3876 Upgrade the Assembler.])
3878 if test x"$with_multilib_list" = xdefault; then
3879 TM_MULTILIB_CONFIG=lp64
3881 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3882 for aarch64_multilib in ${aarch64_multilibs}; do
3883 case ${aarch64_multilib} in
3885 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3886 Upgrade the Assembler.])
3894 # Check if we have binutils support for relocations types needed by -fpic
3895 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3898 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3899 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3900 [Define if your assembler supports relocs needed by -fpic.])])
3901 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3902 AC_ARG_ENABLE(fix-cortex-a53-835769,
3904 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3905 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3906 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3907 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3912 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3917 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3918 Valid choices are 'yes' and 'no'.])
3924 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3925 AC_ARG_ENABLE(fix-cortex-a53-843419,
3927 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3928 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3929 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3930 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3935 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3940 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3941 Valid choices are 'yes' and 'no'.])
3949 # All TARGET_ABI_OSF targets.
3950 alpha*-*-linux* | alpha*-*-*bsd*)
3951 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3952 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3955 extbl $3, $2, $3 !lituse_bytoff!1
3956 ldq $2, a($29) !literal!1
3957 ldq $4, b($29) !literal!2
3958 ldq_u $3, 0($2) !lituse_base!1
3959 ldq $27, f($29) !literal!5
3960 jsr $26, ($27), f !lituse_jsr!5
3961 ldah $29, 0($26) !gpdisp!3
3962 lda $0, c($29) !gprel
3963 ldah $1, d($29) !gprelhigh
3964 lda $1, d($1) !gprellow
3965 lda $29, 0($29) !gpdisp!3],,
3966 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3967 [Define if your assembler supports explicit relocations.])])
3968 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3969 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3972 ldq $27, a($29) !literal!1
3973 jsr $26, ($27), a !lituse_jsrdirect!1],,
3974 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3975 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3979 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3980 [--mlink-relax], [.text],,
3981 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3982 [Define if your avr assembler supports --mlink-relax option.])])
3984 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3986 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3987 [Define if your avr assembler supports -mrmw option.])])
3989 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3990 gcc_cv_as_avr_mgccisr,,
3996 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3997 [Define if your avr assembler supports -mgcc-isr option.])])
3999 # Check how default linker description file implements .rodata for
4000 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4001 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4002 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4003 cat > conftest.s <<EOF
4004 .section .rodata,"a",@progbits
4006 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4011 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4012 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4013 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4014 if test -s conftest.nm
4016 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4018 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4019 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4021 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4022 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4023 cat conftest.nm >&AS_MESSAGE_LOG_FD
4024 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4025 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4028 AC_MSG_RESULT(test failed)
4029 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4030 cat conftest.s >&AS_MESSAGE_LOG_FD
4031 AC_MSG_WARN([[see `config.log' for details]])
4033 rm -f conftest.s conftest.o conftest.elf conftest.nm
4037 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4038 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4039 [-no-mul-bug-abort], [.text],,
4040 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4041 [Define if your assembler supports the -no-mul-bug-abort option.])])
4045 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
4046 [.register %g2, #scratch],,
4047 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
4048 [Define if your assembler supports .register.])])
4050 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4052 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4053 [Define if your assembler supports -relax option.])])
4055 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4056 gcc_cv_as_sparc_gotdata_op,,
4063 sethi %gdop_hix22(foo), %g1
4064 xor %g1, %gdop_lox10(foo), %g1
4065 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4066 [if test x$gcc_cv_ld != x \
4067 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4068 if test x$gcc_cv_objdump != x; then
4069 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4070 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4071 gcc_cv_as_sparc_gotdata_op=no
4073 gcc_cv_as_sparc_gotdata_op=yes
4078 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4079 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4081 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4082 gcc_cv_as_sparc_ua_pcrel,,
4090 .uaword %r_disp32(foo)],
4091 [if test x$gcc_cv_ld != x \
4092 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4093 gcc_cv_as_sparc_ua_pcrel=yes
4096 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4097 [Define if your assembler and linker support unaligned PC relative relocs.])
4099 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4100 gcc_cv_as_sparc_ua_pcrel_hidden,,
4105 .uaword %r_disp32(foo)
4106 .byte 0x32, 0x33, 0x34
4111 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4112 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4113 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4114 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4115 if $gcc_cv_objdump -R conftest 2> /dev/null \
4116 | grep 'DISP32' > /dev/null 2>&1; then
4119 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4123 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4124 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4125 ]) # unaligned pcrel relocs
4127 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4128 gcc_cv_as_sparc_offsetable_lo10,,
4131 or %g1, %lo(ab) + 12, %g1
4132 or %g1, %lo(ab + 12), %g1],
4133 [if test x$gcc_cv_objdump != x \
4134 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4135 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4136 gcc_cv_as_sparc_offsetable_lo10=yes
4138 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4139 [Define if your assembler supports offsetable %lo().])])
4141 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4142 gcc_cv_as_sparc_fmaf,,
4145 .register %g2, #scratch
4146 .register %g3, #scratch
4148 fmaddd %f0, %f2, %f4, %f6
4149 addxccc %g1, %g2, %g3
4150 fsrl32 %f2, %f4, %f8
4151 fnaddd %f10, %f12, %f14],,
4152 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4153 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4155 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4156 gcc_cv_as_sparc_sparc4,,
4159 .register %g2, #scratch
4160 .register %g3, #scratch
4163 1: cwbneg %g2, %g3, 1f
4166 aes_kexpand0 %f4, %f6, %f8
4167 des_round %f38, %f40, %f42, %f44
4168 camellia_f %f54, %f56, %f58, %f60
4169 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4170 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4171 [Define if your assembler supports SPARC4 instructions.])])
4173 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4174 gcc_cv_as_sparc_sparc5,,
4177 .register %g2, #scratch
4178 .register %g3, #scratch
4181 fpadd8 %f0, %f2, %f4],,
4182 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4183 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4185 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4186 gcc_cv_as_sparc_sparc6,,
4189 .register %g2, #scratch
4190 .register %g3, #scratch
4193 fpsll64x %f0, %f2, %f4],,
4194 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4195 [Define if your assembler supports SPARC6 instructions.])])
4197 gcc_GAS_CHECK_FEATURE([LEON instructions],
4198 gcc_cv_as_sparc_leon,,
4201 .register %g2, #scratch
4202 .register %g3, #scratch
4206 casa [[%g2]] 0xb, %g3, %g1],,
4207 [AC_DEFINE(HAVE_AS_LEON, 1,
4208 [Define if your assembler supports LEON instructions.])])
4212 i[34567]86-*-* | x86_64-*-*)
4216 # Full C++ conformance when using a shared libstdc++-v3 requires some
4217 # support from the Cygwin DLL, which in more recent versions exports
4218 # wrappers to aid in interposing and redirecting operators new, delete,
4219 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4220 # are configuring for a version of Cygwin that exports the wrappers.
4221 if test x$host = x$target && test x$host_cpu = xi686; then
4222 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4224 # Can't check presence of libc functions during cross-compile, so
4225 # we just have to assume we're building for an up-to-date target.
4226 gcc_ac_cygwin_dll_wrappers=yes
4228 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4229 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4230 [Define if you want to generate code by default that assumes that the
4231 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4234 cygwin* | pe | mingw32*)
4235 # Recent binutils allows the three-operand form of ".comm" on PE. This
4236 # definition is used unconditionally to initialise the default state of
4237 # the target option variable that governs usage of the feature.
4238 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4239 [2,19,52],,[.comm foo,1,32])
4240 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4241 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4242 [Define if your assembler supports specifying the alignment
4243 of objects allocated using the GAS .comm command.])
4244 # Used for DWARF 2 in PE
4245 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4246 gcc_cv_as_ix86_pe_secrel32,
4252 [if test x$gcc_cv_ld != x \
4253 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4254 gcc_cv_as_ix86_pe_secrel32=yes
4257 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4258 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4259 # Test if the assembler supports the extended form of the .section
4260 # directive that specifies section alignment. LTO support uses this,
4261 # but normally only after installation, so we warn but don't fail the
4262 # configure if LTO is enabled but the assembler does not support it.
4263 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4264 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4265 if test x$gcc_cv_as_section_has_align != xyes; then
4266 case ",$enable_languages," in
4268 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4275 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4276 [-xbrace_comment=no], [.text],,
4277 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4278 [Define if your assembler supports -xbrace_comment option.])])
4280 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4281 gcc_cv_as_ix86_filds,,,
4282 [filds (%ebp); fists (%ebp)],,
4283 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4284 [Define if your assembler uses filds and fists mnemonics.])])
4286 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4287 gcc_cv_as_ix86_fildq,,,
4288 [fildq (%ebp); fistpq (%ebp)],,
4289 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4290 [Define if your assembler uses fildq and fistq mnemonics.])])
4292 gcc_GAS_CHECK_FEATURE([cmov syntax],
4293 gcc_cv_as_ix86_cmov_sun_syntax,,,
4294 [cmovl.l %edx, %eax],,
4295 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4296 [Define if your assembler supports the Sun syntax for cmov.])])
4298 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4299 gcc_cv_as_ix86_ffreep,,,
4301 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4302 [Define if your assembler supports the ffreep mnemonic.])])
4304 gcc_GAS_CHECK_FEATURE([.quad directive],
4305 gcc_cv_as_ix86_quad,,,
4307 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4308 [Define if your assembler supports the .quad directive.])])
4310 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4311 gcc_cv_as_ix86_sahf,,,
4314 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4315 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4317 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4318 gcc_cv_as_ix86_interunit_movq,,,
4322 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4323 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4324 [Define if your assembler supports interunit movq mnemonic.])
4326 gcc_GAS_CHECK_FEATURE([hle prefixes],
4327 gcc_cv_as_ix86_hle,,,
4328 [lock xacquire cmpxchg %esi, (%ecx)],,
4329 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4330 [Define if your assembler supports HLE prefixes.])])
4332 gcc_GAS_CHECK_FEATURE([swap suffix],
4333 gcc_cv_as_ix86_swap,,,
4334 [movl.s %esp, %ebp],,
4335 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4336 [Define if your assembler supports the swap suffix.])])
4338 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4339 gcc_cv_as_ix86_diff_sect_delta,,,
4347 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4348 [Define if your assembler supports the subtraction of symbols in different sections.])])
4350 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4351 gcc_cv_as_ix86_rep_lock_prefix,,,
4357 lock addl %edi, (%eax,%esi)
4358 lock orl $0, (%esp)],,
4359 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4360 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4362 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4363 gcc_cv_as_ix86_ud2,,,
4365 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4366 [Define if your assembler supports the 'ud2' mnemonic.])])
4368 # Enforce 32-bit output with gas and gld.
4369 if test x$gas = xyes; then
4370 as_ix86_gas_32_opt="--32"
4372 if echo "$ld_ver" | grep GNU > /dev/null; then
4373 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4374 ld_ix86_gld_32_opt="-melf_i386_sol2"
4376 ld_ix86_gld_32_opt="-melf_i386"
4380 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4381 gcc_cv_as_ix86_tlsgdplt,,
4382 [$as_ix86_gas_32_opt],
4383 [call tls_gd@tlsgdplt],
4384 [if test x$gcc_cv_ld != x \
4385 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4386 gcc_cv_as_ix86_tlsgdplt=yes
4389 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4390 [Define if your assembler and linker support @tlsgdplt.])])
4393 .section .tdata,"aw'$tls_section_flag'",@progbits
4395 .section .text,"ax",@progbits
4396 call tls_ld@tlsldmplt'
4398 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4399 gcc_cv_as_ix86_tlsldmplt,,
4400 [$as_ix86_gas_32_opt],
4402 [if test x$gcc_cv_ld != x \
4403 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4404 gcc_cv_as_ix86_tlsldmplt=yes
4407 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4408 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4409 [Define to 1 if your assembler and linker support @tlsldmplt.])
4412 .section .text,"ax",@progbits
4414 .type _start, @function
4416 leal value@tlsldm(%ebx), %eax
4417 call ___tls_get_addr@plt
4419 .section .tdata,"aw'$tls_section_flag'",@progbits
4420 .type value, @object
4422 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4423 gcc_cv_as_ix86_tlsldm,,
4424 [$as_ix86_gas_32_opt],
4426 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4427 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4428 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4429 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4430 gcc_cv_as_ix86_tlsldm=yes
4434 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4435 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4436 [Define to 1 if your assembler and linker support @tlsldm.])
4447 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4448 gcc_cv_as_ix86_got32x,,
4449 [$as_ix86_gas_32_opt],
4451 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4452 && test x$gcc_cv_readelf != x \
4453 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4454 | grep R_386_GOT32X > /dev/null 2>&1 \
4455 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4456 if $gcc_cv_objdump -dw conftest 2>&1 \
4457 | grep 0xffffff > /dev/null 2>&1; then
4458 gcc_cv_as_ix86_got32x=no
4460 gcc_cv_as_ix86_got32x=yes
4464 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4465 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4466 [Define 0/1 if your assembler and linker support @GOT.])
4468 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4469 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4470 [$as_ix86_gas_32_opt],
4476 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4477 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4478 [Define true if the assembler supports '.long foo@GOTOFF'.])
4481 .section .text,"ax",@progbits
4483 .type _start, @function
4485 leal ld@tlsldm(%ecx), %eax
4486 call *___tls_get_addr@GOT(%ecx)
4487 leal gd@tlsgd(%ecx), %eax
4488 call *___tls_get_addr@GOT(%ecx)
4490 .section .tdata,"aw'$tls_section_flag'",@progbits
4498 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4499 gcc_cv_as_ix86_tls_get_addr_via_got,,
4500 [$as_ix86_gas_32_opt],
4502 [if test x$gcc_cv_ld != x \
4503 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4504 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4507 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4508 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4509 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4513 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4514 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4516 addl r15 = @ltoffx(x#), gp
4518 ld8.mov r16 = [[r15]], x#],,
4519 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4520 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4528 gcc_GAS_CHECK_FEATURE([.machine directive support],
4529 gcc_cv_as_machine_directive,,,
4530 [ .machine ppc7400])
4531 if test x$gcc_cv_as_machine_directive != xyes; then
4532 echo "*** This target requires an assembler supporting \".machine\"" >&2
4533 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4534 test x$build = x$target && exit 1
4540 *-*-aix*) conftest_s=' .machine "pwr5"
4543 *-*-darwin*) conftest_s=' .text
4545 *) conftest_s=' .machine power4
4550 gcc_GAS_CHECK_FEATURE([mfcr field support],
4551 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4553 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4554 [Define if your assembler supports mfcr field.])])
4557 *-*-aix*) conftest_s=' .csect .text[[PR]]
4559 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4563 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4564 *) conftest_s=' .text
4566 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4569 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4570 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4572 [AC_DEFINE(HAVE_AS_REL16, 1,
4573 [Define if your assembler supports R_PPC_REL16 relocs.])])
4576 *-*-aix*) conftest_s=' .machine "pwr7"
4579 *) conftest_s=' .machine power7
4584 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4585 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4587 [AC_DEFINE(HAVE_AS_VSX, 1,
4588 [Define if your assembler supports VSX instructions.])])
4590 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4591 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4592 [.gnu_attribute 4,1],,
4593 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4594 [Define if your assembler supports .gnu_attribute.])])
4596 gcc_GAS_CHECK_FEATURE([tls marker support],
4597 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4598 [ bl __tls_get_addr(x@tlsgd)],,
4599 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4600 [Define if your assembler supports arg info for __tls_get_addr.])])
4602 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4603 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4604 [ .reloc .,R_PPC64_ENTRY; nop],,
4605 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4606 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4610 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4611 gcc_cv_as_aix_ref, [2,21,0],,
4612 [ .csect stuff[[rw]]
4618 [AC_DEFINE(HAVE_AS_REF, 1,
4619 [Define if your assembler supports .ref])])
4621 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4622 gcc_cv_as_aix_dwloc, [2,21,0],,
4627 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4628 [Define if your assembler supports AIX debug frame section label reference.])])
4634 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4635 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4636 [ lw $4,%gp_rel(foo)($4)],,
4637 [if test x$target_cpu_default = x
4638 then target_cpu_default=MASK_EXPLICIT_RELOCS
4639 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4642 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4643 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4644 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4645 [Define if the assembler understands -mno-shared.])])
4647 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4648 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4649 [.gnu_attribute 4,1],,
4650 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4651 [Define if your assembler supports .gnu_attribute.])])
4653 gcc_GAS_CHECK_FEATURE([.module support],
4654 gcc_cv_as_mips_dot_module,,[-32],
4657 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4658 [Define if your assembler supports .module.])])
4659 if test x$gcc_cv_as_mips_dot_module = xno \
4660 && test x$with_fp_32 != x; then
4662 [Requesting --with-fp-32= requires assembler support for .module.])
4665 gcc_GAS_CHECK_FEATURE([.micromips support],
4666 gcc_cv_as_micromips_support,,[--fatal-warnings],
4668 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4669 [Define if your assembler supports the .set micromips directive])])
4671 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4672 gcc_cv_as_mips_dtprelword, [2,18,0],,
4673 [.section .tdata,"awT",@progbits
4677 .dtprelword x+0x8000],,
4678 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4679 [Define if your assembler supports .dtprelword.])])
4681 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4682 gcc_cv_as_mips_dspr1_mult,,,
4692 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4693 [Define if your assembler supports DSPR1 mult.])])
4695 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4696 gcc_cv_as_ld_jalr_reloc=no
4697 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4698 if test $in_tree_ld = yes ; then
4699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4700 && test $in_tree_ld_is_elf = yes; then
4701 gcc_cv_as_ld_jalr_reloc=yes
4703 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4704 echo ' .ent x' > conftest.s
4705 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4706 echo ' lw $25,%call16(y)($28)' >> conftest.s
4707 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4708 echo '1: jalr $25' >> conftest.s
4709 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4710 echo '1: jalr $25' >> conftest.s
4711 echo ' .end x' >> conftest.s
4712 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4713 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4714 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4715 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4716 gcc_cv_as_ld_jalr_reloc=yes
4722 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4723 if test x$target_cpu_default = x; then
4724 target_cpu_default=MASK_RELAX_PIC_CALLS
4726 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4729 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4731 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4732 [gcc_cv_ld_mips_personality_relaxation],
4733 [gcc_cv_ld_mips_personality_relaxation=no
4734 if test $in_tree_ld = yes ; then
4735 if test "$gcc_cv_gld_major_version" -eq 2 \
4736 -a "$gcc_cv_gld_minor_version" -ge 21 \
4737 -o "$gcc_cv_gld_major_version" -gt 2; then
4738 gcc_cv_ld_mips_personality_relaxation=yes
4740 elif test x$gcc_cv_as != x \
4741 -a x$gcc_cv_ld != x \
4742 -a x$gcc_cv_readelf != x ; then
4743 cat > conftest.s <<EOF
4745 .cfi_personality 0x80,indirect_ptr
4752 .section .data,"aw",@progbits
4756 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4757 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4758 if $gcc_cv_readelf -d conftest 2>&1 \
4759 | grep TEXTREL > /dev/null 2>&1; then
4761 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4762 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4765 gcc_cv_ld_mips_personality_relaxation=yes
4769 rm -f conftest.s conftest.o conftest])
4770 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4771 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4772 [Define if your linker can relax absolute .eh_frame personality
4773 pointers into PC-relative form.])
4776 gcc_GAS_CHECK_FEATURE([-mnan= support],
4777 gcc_cv_as_mips_nan,,
4779 [AC_DEFINE(HAVE_AS_NAN, 1,
4780 [Define if the assembler understands -mnan=.])])
4781 if test x$gcc_cv_as_mips_nan = xno \
4782 && test x$with_nan != x; then
4784 [Requesting --with-nan= requires assembler support for -mnan=])
4788 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4789 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4790 [.gnu_attribute 8,1],,
4791 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4792 [Define if your assembler supports .gnu_attribute.])])
4793 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4794 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4799 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4800 [Define if your assembler supports .machine and .machinemode.])])
4801 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4802 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4803 [ .machine z13+vx ],,
4804 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4805 [Define if your assembler supports architecture modifiers.])])
4809 # Mips and HP-UX need the GNU assembler.
4810 # Linux on IA64 might be able to use the Intel assembler.
4813 mips*-*-* | *-*-hpux* )
4814 if test x$gas_flag = xyes \
4815 || test x"$host" != x"$build" \
4816 || test ! -x "$gcc_cv_as" \
4817 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4820 echo "*** This configuration requires the GNU assembler" >&2
4826 # ??? Not all targets support dwarf2 debug_line, even within a version
4827 # of gas. Moreover, we need to emit a valid instruction to trigger any
4828 # info to the output file. So, as supported targets are added to gas 2.11,
4829 # add some instruction here to (also) show we expect this might work.
4830 # ??? Once 2.11 is released, probably need to add first known working
4831 # version to the per-target configury.
4833 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4834 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4835 | tilegx | tilepro | visium | xstormy16 | xtensa)
4845 if test x"$insn" != x; then
4847 .file 1 \"conftest.s\"
4850 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4851 gcc_cv_as_dwarf2_debug_line,
4852 [elf,2,11,0],, [$conftest_s],
4853 [if test x$gcc_cv_objdump != x \
4854 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4855 | grep debug_line > /dev/null 2>&1; then
4856 gcc_cv_as_dwarf2_debug_line=yes
4859 # The .debug_line file table must be in the exact order that
4860 # we specified the files, since these indices are also used
4861 # by DW_AT_decl_file. Approximate this test by testing if
4862 # the assembler bitches if the same index is assigned twice.
4863 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4864 gcc_cv_as_dwarf2_file_buggy,,,
4868 if test $gcc_cv_as_dwarf2_debug_line = yes \
4869 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4870 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4871 [Define if your assembler supports dwarf2 .file/.loc directives,
4872 and preserves file table indices exactly as given.])
4874 if test $gcc_cv_as_leb128 = yes; then
4876 .file 1 \"conftest.s\"
4877 .loc 1 3 0 view .LVU1
4883 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4884 gcc_cv_as_dwarf2_debug_view,
4885 [elf,2,27,0],,[$conftest_s],,
4886 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4887 [Define if your assembler supports views in dwarf2 .loc directives.])])
4891 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4892 gcc_cv_as_gdwarf2_flag,
4893 [elf,2,11,0], [--gdwarf2], [$insn],,
4894 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4895 [Define if your assembler supports the --gdwarf2 option.])])
4897 gcc_GAS_CHECK_FEATURE([--gstabs option],
4898 gcc_cv_as_gstabs_flag,
4899 [elf,2,11,0], [--gstabs], [$insn],,
4900 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4901 [Define if your assembler supports the --gstabs option.])])
4903 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4904 gcc_cv_as_debug_prefix_map_flag,
4905 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4906 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4907 [Define if your assembler supports the --debug-prefix-map option.])])
4910 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4911 gcc_cv_as_compress_debug,,,,
4912 [# gas compiled without zlib cannot compress debug sections and warns
4913 # about it, but still exits successfully. So check for this, too.
4914 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4916 gcc_cv_as_compress_debug=0
4917 # Since binutils 2.26, gas supports --compress-debug-sections=type,
4918 # defaulting to the ELF gABI format.
4919 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
4921 gcc_cv_as_compress_debug=2
4922 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4923 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4924 # Before binutils 2.26, gas only supported --compress-debug-options and
4925 # emitted the traditional GNU format.
4926 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4928 gcc_cv_as_compress_debug=1
4929 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4930 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4932 gcc_cv_as_compress_debug=0
4934 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4935 [Define to the level of your assembler's compressed debug section support.])
4936 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4937 [Define to the assembler option to enable compressed debug sections.])
4938 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4939 [Define to the assembler option to disable compressed debug sections.])
4941 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4944 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4945 [Define if your assembler supports .lcomm with an alignment field.])])
4947 if test x$with_sysroot = x && test x$host = x$target \
4948 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4949 && test "$prefix" != "NONE"; then
4950 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4951 [Define to PREFIX/include if cpp should also search that directory.])
4954 # Determine the version of glibc, if any, used on the target.
4955 AC_MSG_CHECKING([for target glibc version])
4956 AC_ARG_WITH([glibc-version],
4957 [AS_HELP_STRING([--with-glibc-version=M.N],
4958 [assume GCC used with glibc version M.N or later])], [
4959 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4960 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4961 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4963 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4965 glibc_version_major=0
4966 glibc_version_minor=0
4967 [if test -f $target_header_dir/features.h \
4968 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4969 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4970 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4971 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4973 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4974 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4975 [GNU C Library major version number used on the target, or 0.])
4976 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4977 [GNU C Library minor version number used on the target, or 0.])
4979 AC_ARG_ENABLE(gnu-unique-object,
4980 [AS_HELP_STRING([--enable-gnu-unique-object],
4981 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4982 [case $enable_gnu_unique_object in
4984 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4985 Valid choices are 'yes' and 'no'.]) ;;
4987 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4989 [.type foo, '$target_type_format_char'gnu_unique_object],,
4990 # We need to unquote above to to use the definition from config.gcc.
4991 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4992 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4994 if test x$enable_gnu_unique_object = xyes; then
4995 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4996 [Define if your assembler supports @gnu_unique_object.])
4999 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5000 [gcc_cv_as_line_zero],
5001 [gcc_cv_as_line_zero=no
5002 if test $in_tree_gas = yes; then
5003 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5004 elif test "x$gcc_cv_as" != x; then
5005 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5006 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5007 test "x`cat conftest.out`" = x
5009 gcc_cv_as_line_zero=yes
5011 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5012 cat conftest.s >&AS_MESSAGE_LOG_FD
5013 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5014 cat conftest.out >&AS_MESSAGE_LOG_FD
5016 rm -f conftest.o conftest.s conftest.out
5018 if test "x$gcc_cv_as_line_zero" = xyes; then
5019 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5020 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5023 AC_MSG_CHECKING(support for thin archives)
5024 thin_archive_support=no
5025 echo 'int main (void) { return 0; }' > conftest.c
5026 if ($AR --version | sed 1q | grep "GNU ar" \
5027 && $CC $CFLAGS -c conftest.c \
5028 && $AR rcT conftest.a conftest.o \
5029 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5030 thin_archive_support=yes
5032 rm -f conftest.c conftest.o conftest.a conftest
5033 AC_MSG_RESULT($thin_archive_support)
5034 AC_SUBST(thin_archive_support)
5036 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5037 gcc_cv_ld_eh_frame_hdr=no
5038 if test $in_tree_ld = yes ; then
5039 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5040 && test $in_tree_ld_is_elf = yes; then
5041 gcc_cv_ld_eh_frame_hdr=yes
5043 elif test x$gcc_cv_ld != x; then
5044 if echo "$ld_ver" | grep GNU > /dev/null; then
5045 # Check if linker supports --eh-frame-hdr option
5046 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5047 gcc_cv_ld_eh_frame_hdr=yes
5052 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5053 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5054 gcc_cv_ld_eh_frame_hdr=yes
5060 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5061 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5062 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5063 [Define if your linker supports .eh_frame_hdr.])
5065 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5067 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5068 gcc_cv_ld_eh_frame_ciev3=no
5069 if test $in_tree_ld = yes ; then
5070 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5071 && test $in_tree_ld_is_elf = yes; then
5072 gcc_cv_ld_eh_frame_ciev3=yes
5074 elif test x$gcc_cv_ld != x; then
5075 if echo "$ld_ver" | grep GNU > /dev/null; then
5076 gcc_cv_ld_eh_frame_ciev3=yes
5077 if test 0"$ld_date" -lt 20040513; then
5078 if test -n "$ld_date"; then
5079 # If there was date string, but was earlier than 2004-05-13, fail
5080 gcc_cv_ld_eh_frame_ciev3=no
5081 elif test "$ld_vers_major" -lt 2; then
5082 gcc_cv_ld_eh_frame_ciev3=no
5083 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5084 gcc_cv_ld_eh_frame_ciev3=no
5090 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5091 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5092 gcc_cv_ld_eh_frame_ciev3=yes
5098 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5099 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5100 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5101 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5103 AC_MSG_CHECKING(linker position independent executable support)
5105 if test $in_tree_ld = yes ; then
5107 # Full PIE support on Solaris was only introduced in gld 2.26.
5108 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5109 *) gcc_gld_pie_min_version=15 ;;
5111 if test "$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 \
5112 && test $in_tree_ld_is_elf = yes; then
5115 elif test x$gcc_cv_ld != x; then
5116 # Check if linker supports -pie option
5117 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5121 if echo "$ld_ver" | grep GNU > /dev/null \
5122 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5129 *-*-solaris2.1[[1-9]]*)
5130 # Solaris 11.3 added PIE support.
5131 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5138 if test x"$gcc_cv_ld_pie" = xyes; then
5139 AC_DEFINE(HAVE_LD_PIE, 1,
5140 [Define if your linker supports PIE option.])
5142 AC_MSG_RESULT($gcc_cv_ld_pie)
5144 AC_MSG_CHECKING(linker PIE support with copy reloc)
5145 gcc_cv_ld_pie_copyreloc=no
5146 if test $gcc_cv_ld_pie = yes ; then
5147 if test $in_tree_ld = yes ; then
5148 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5149 gcc_cv_ld_pie_copyreloc=yes
5151 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5152 # Check if linker supports -pie option with copy reloc
5154 i?86-*-linux* | x86_64-*-linux*)
5155 cat > conftest1.s <<EOF
5158 .type a_glob, @object
5163 cat > conftest2.s <<EOF
5166 .type main, @function
5168 movl %eax, a_glob(%rip)
5171 .section .data.rel,"aw",@progbits
5176 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5177 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5178 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5179 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5180 gcc_cv_ld_pie_copyreloc=yes
5182 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5187 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5188 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5189 [Define 0/1 if your linker supports -pie option with copy reloc.])
5190 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5192 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5193 gcc_cv_ld_eh_gc_sections=no
5194 if test $in_tree_ld = yes ; then
5195 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5196 && test $in_tree_ld_is_elf = yes; then
5197 gcc_cv_ld_eh_gc_sections=yes
5199 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5200 cat > conftest.s <<EOF
5203 .type _start, @function
5206 .size _start, .-_start
5207 .section .text.foo,"ax",@progbits
5208 .type foo, @function
5212 .section .gcc_except_table.foo,"a",@progbits
5215 .section .eh_frame,"a",@progbits
5218 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5219 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5220 | grep "gc-sections option ignored" > /dev/null; then
5221 gcc_cv_ld_eh_gc_sections=no
5222 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5223 | grep gcc_except_table > /dev/null; then
5224 gcc_cv_ld_eh_gc_sections=yes
5225 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5226 if test x$gcc_cv_as_comdat_group != xyes; then
5227 gcc_cv_ld_eh_gc_sections=no
5228 cat > conftest.s <<EOF
5231 .type _start, @function
5234 .size _start, .-_start
5235 .section .gnu.linkonce.t.foo,"ax",@progbits
5236 .type foo, @function
5240 .section .gcc_except_table.foo,"a",@progbits
5243 .section .eh_frame,"a",@progbits
5246 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5247 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5248 | grep "gc-sections option ignored" > /dev/null; then
5249 gcc_cv_ld_eh_gc_sections=no
5250 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5251 | grep gcc_except_table > /dev/null; then
5252 gcc_cv_ld_eh_gc_sections=yes
5258 rm -f conftest.s conftest.o conftest
5262 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5263 gcc_cv_ld_eh_gc_sections=no
5266 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5267 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5268 [Define if your linker supports garbage collection of
5269 sections in presence of EH frames.])
5271 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5273 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5274 gcc_cv_ld_eh_gc_sections_bug=no
5275 if test $in_tree_ld = yes ; then
5276 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5277 && test $in_tree_ld_is_elf = yes; then
5278 gcc_cv_ld_eh_gc_sections_bug=yes
5280 elif test x$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
5281 gcc_cv_ld_eh_gc_sections_bug=yes
5282 cat > conftest.s <<EOF
5285 .type _start, @function
5288 .size _start, .-_start
5289 .section .text.startup.foo,"ax",@progbits
5290 .type foo, @function
5294 .section .gcc_except_table.foo,"a",@progbits
5297 .section .eh_frame,"a",@progbits
5300 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5301 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5302 | grep "gc-sections option ignored" > /dev/null; then
5304 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5305 | grep gcc_except_table > /dev/null; then
5306 gcc_cv_ld_eh_gc_sections_bug=no
5309 rm -f conftest.s conftest.o conftest
5311 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5312 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5313 [Define if your linker has buggy garbage collection of
5314 sections support when .text.startup.foo like sections are used.])
5316 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5318 AC_MSG_CHECKING(linker for compressed debug sections)
5319 # gold/gld support compressed debug sections since binutils 2.19/2.21
5320 # In binutils 2.26, gld gained support for the ELF gABI format.
5321 if test $in_tree_ld = yes ; then
5322 gcc_cv_ld_compress_debug=0
5323 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5324 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5325 gcc_cv_ld_compress_debug=2
5326 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5327 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5328 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5329 gcc_cv_ld_compress_debug=3
5330 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5331 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5332 && test $in_tree_ld_is_elf = yes; then
5333 gcc_cv_ld_compress_debug=1
5335 elif echo "$ld_ver" | grep GNU > /dev/null; then
5336 if test "$ld_vers_major" -lt 2 \
5337 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5338 gcc_cv_ld_compress_debug=0
5339 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5340 gcc_cv_ld_compress_debug=1
5342 gcc_cv_ld_compress_debug=3
5343 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5345 if test $ld_is_gold = yes; then
5346 gcc_cv_ld_compress_debug=2
5347 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5353 # Introduced in Solaris 11.2.
5354 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5355 gcc_cv_ld_compress_debug=3
5356 gcc_cv_ld_compress_debug_option="-z compress-sections"
5358 gcc_cv_ld_compress_debug=0
5362 # Assume linkers other than GNU ld don't support compessed debug
5364 gcc_cv_ld_compress_debug=0
5369 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5370 [Define to the level of your linker's compressed debug section support.])
5371 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5372 [Define to the linker option to enable compressed debug sections.])
5373 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5375 if test x"$ld64_flag" = x"yes"; then
5377 # Set defaults for possibly untestable items.
5378 gcc_cv_ld64_export_dynamic=0
5380 if test "$build" = "$host"; then
5386 # On Darwin, because of FAT library support, it is often possible to execute
5387 # exes from compatible archs even when the host differs from the build system.
5388 case "$build","$host" in
5389 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5394 # If the configurer specified a minimum ld64 version to be supported, then use
5395 # that to determine feature support.
5396 if test x"${gcc_cv_ld64_version}" != x; then
5397 AC_MSG_CHECKING(ld64 specified version)
5398 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5399 AC_MSG_RESULT($gcc_cv_ld64_major)
5400 if test "$gcc_cv_ld64_major" -ge 236; then
5401 gcc_cv_ld64_export_dynamic=1
5403 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5404 # If the version was not specified, try to find it.
5405 AC_MSG_CHECKING(linker version)
5406 if test x"${gcc_cv_ld64_version}" = x; then
5407 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5409 AC_MSG_RESULT($gcc_cv_ld64_version)
5411 AC_MSG_CHECKING(linker for -export_dynamic support)
5412 gcc_cv_ld64_export_dynamic=1
5413 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5414 gcc_cv_ld64_export_dynamic=0
5416 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5419 if test x"${gcc_cv_ld64_version}" != x; then
5420 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5421 [Define to ld64 version.])
5424 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5425 [Define to 1 if ld64 supports '-export_dynamic'.])
5432 AC_CACHE_CHECK(linker --as-needed support,
5433 gcc_cv_ld_as_needed,
5434 [gcc_cv_ld_as_needed=no
5435 gcc_cv_ld_as_needed_option='--as-needed'
5436 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5437 if test $in_tree_ld = yes ; then
5438 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5439 && test $in_tree_ld_is_elf = yes; then
5440 gcc_cv_ld_as_needed=yes
5441 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5442 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5443 gcc_cv_ld_no_as_needed_option='--pop-state'
5446 elif test x$gcc_cv_ld != x; then
5447 # Check if linker supports --as-needed and --no-as-needed options
5448 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5449 gcc_cv_ld_as_needed=yes
5450 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5451 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5452 && echo "$ld_ver" | grep GNU > /dev/null \
5453 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5454 # Use these options only when both ld.bfd and ld.gold support
5455 # --push-state/--pop-state, which unfortunately wasn't added
5457 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5458 gcc_cv_ld_no_as_needed_option='--pop-state'
5461 case "$target:$gnu_ld" in
5463 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5465 gcc_cv_ld_as_needed=yes
5466 gcc_cv_ld_as_needed_option="-z ignore"
5467 gcc_cv_ld_no_as_needed_option="-z record"
5471 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5472 # dl_iterate_phdr, i.e. since Solaris 11.
5474 *-*-solaris2.1[[1-9]]*)
5476 i?86-*-* | x86_64-*-*)
5477 if echo "$ld_ver" | grep GNU > /dev/null; then
5478 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5479 gcc_cv_ld_as_needed=no
5485 gcc_cv_ld_as_needed=no
5489 if test x"$gcc_cv_ld_as_needed" = xyes; then
5490 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5491 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5492 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5493 [Define to the linker option to ignore unused dependencies.])
5494 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5495 [Define to the linker option to keep unused dependencies.])
5498 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5499 saved_LDFLAGS="$LDFLAGS"
5500 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5501 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5502 AC_LINK_IFELSE([int main(void) {return 0;}],
5503 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5505 LDFLAGS="$saved_LDFLAGS"
5506 if test "x$gcc_cv_ld_clearcap" = xyes; then
5507 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5508 [Define if the linker supports clearing hardware capabilities via mapfile.])
5509 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5511 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5517 emul_name="-melf32lppc"
5520 emul_name="-melf32ppc"
5523 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5525 [gcc_cv_ld_ppc_attr=no
5526 if test x"$ld_is_gold" = xyes; then
5527 gcc_cv_ld_ppc_attr=yes
5528 elif test $in_tree_ld = yes ; then
5529 if test "$gcc_cv_gld_major_version" -eq 2 \
5530 -a "$gcc_cv_gld_minor_version" -ge 28 \
5531 -o "$gcc_cv_gld_major_version" -gt 2; then
5532 gcc_cv_ld_ppc_attr=yes
5534 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5535 # check that merging the long double .gnu_attribute doesn't warn
5536 cat > conftest1.s <<EOF
5539 cat > conftest2.s <<EOF
5542 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5543 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5544 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5545 && test ! -s conftest.err; then
5546 gcc_cv_ld_ppc_attr=yes
5548 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5551 if test x$gcc_cv_ld_ppc_attr = xyes; then
5552 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5553 [Define if your PowerPC linker has .gnu.attributes long double support.])
5558 case "$target:$tm_file" in
5559 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5562 emul_name="-melf64lppc"
5565 emul_name="-melf64ppc"
5568 emul_name="-melf64ppc_fbsd"
5571 AC_CACHE_CHECK(linker support for omitting dot symbols,
5572 gcc_cv_ld_no_dot_syms,
5573 [gcc_cv_ld_no_dot_syms=no
5574 if test x"$ld_is_gold" = xyes; then
5575 gcc_cv_ld_no_dot_syms=yes
5576 elif test $in_tree_ld = yes ; then
5577 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5578 gcc_cv_ld_no_dot_syms=yes
5580 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5581 cat > conftest1.s <<EOF
5585 cat > conftest2.s <<EOF
5586 .section ".opd","aw"
5591 .quad .LEfoo,.TOC.@tocbase,0
5597 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5598 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5599 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5600 gcc_cv_ld_no_dot_syms=yes
5602 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5605 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5606 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5607 [Define if your PowerPC64 linker only needs function descriptor syms.])
5610 AC_CACHE_CHECK(linker large toc support,
5611 gcc_cv_ld_large_toc,
5612 [gcc_cv_ld_large_toc=no
5613 if test x"$ld_is_gold" = xyes; then
5614 gcc_cv_ld_large_toc=yes
5615 elif test $in_tree_ld = yes ; then
5616 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5617 gcc_cv_ld_large_toc=yes
5619 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5620 cat > conftest.s <<EOF
5621 .section ".tbss","awT",@nobits
5627 addis 9,13,ie0@got@tprel@ha
5628 ld 9,ie0@got@tprel@l(9)
5630 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5631 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5632 gcc_cv_ld_large_toc=yes
5634 rm -f conftest conftest.o conftest.s
5637 if test x"$gcc_cv_ld_large_toc" = xyes; then
5638 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5639 [Define if your PowerPC64 linker supports a large TOC.])
5642 AC_CACHE_CHECK(linker toc pointer alignment,
5643 gcc_cv_ld_toc_align,
5644 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5645 cat > conftest.s <<EOF
5650 .section .data.rel.ro,"aw",@progbits
5655 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5656 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5657 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5659 rm -f conftest conftest.o conftest.s
5662 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5663 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5664 [Define to .TOC. alignment forced by your linker.])
5671 AC_CACHE_CHECK(linker large toc support,
5672 gcc_cv_ld_large_toc,
5673 [gcc_cv_ld_large_toc=no
5674 if test x$gcc_cv_as != x ; then
5675 cat > conftest.s <<EOF
5685 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5686 gcc_cv_ld_large_toc=yes
5688 rm -f conftest conftest.o conftest.s
5691 if test x"$gcc_cv_ld_large_toc" = xyes; then
5692 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5693 [Define if your PowerPC64 linker supports a large TOC.])
5698 AC_CACHE_CHECK(linker --build-id support,
5700 [gcc_cv_ld_buildid=no
5701 if test $in_tree_ld = yes ; then
5702 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5703 "$gcc_cv_gld_minor_version" -ge 18 -o \
5704 "$gcc_cv_gld_major_version" -gt 2 \
5705 && test $in_tree_ld_is_elf = yes; then
5706 gcc_cv_ld_buildid=yes
5708 elif test x$gcc_cv_ld != x; then
5709 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5710 gcc_cv_ld_buildid=yes
5713 if test x"$gcc_cv_ld_buildid" = xyes; then
5714 AC_DEFINE(HAVE_LD_BUILDID, 1,
5715 [Define if your linker supports --build-id.])
5718 AC_ARG_ENABLE(linker-build-id,
5719 [AS_HELP_STRING([--enable-linker-build-id],
5720 [compiler will always pass --build-id to linker])],
5722 enable_linker_build_id=no)
5724 if test x"$enable_linker_build_id" = xyes; then
5725 if test x"$gcc_cv_ld_buildid" = xyes; then
5726 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5727 [Define if gcc should always pass --build-id to linker.])
5729 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5733 # In binutils 2.21, GNU ld gained support for new emulations fully
5734 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5735 AC_CACHE_CHECK(linker *_sol2 emulation support,
5736 gcc_cv_ld_sol2_emulation,
5737 [gcc_cv_ld_sol2_emulation=no
5738 if test $in_tree_ld = yes ; then
5739 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5740 "$gcc_cv_gld_minor_version" -ge 21 -o \
5741 "$gcc_cv_gld_major_version" -gt 2 \
5742 && test $in_tree_ld_is_elf = yes; then
5743 gcc_cv_ld_sol2_emulation=yes
5745 elif test x$gcc_cv_ld != x; then
5746 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5747 grep _sol2 > /dev/null; then
5748 gcc_cv_ld_sol2_emulation=yes
5751 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5752 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5753 [Define if your linker supports the *_sol2 emulations.])
5756 AC_CACHE_CHECK(linker --sysroot support,
5758 [gcc_cv_ld_sysroot=no
5759 if test $in_tree_ld = yes ; then
5760 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5761 gcc_cv_ld_sysroot=yes
5763 elif test x$gcc_cv_ld != x; then
5764 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5765 gcc_cv_ld_sysroot=yes
5768 if test x"$gcc_cv_ld_sysroot" = xyes; then
5769 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5770 [Define if your linker supports --sysroot.])
5775 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5776 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5777 gcc_cv_solaris_crts,
5778 [gcc_cv_solaris_crts=no
5779 if test x$host != x$target; then
5780 if test "x$with_sysroot" = xyes; then
5781 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5783 target_sysroot="${with_sysroot}"
5786 target_libdir="$target_sysroot/usr/lib"
5787 # At the time they were added, gcrt1.o became a symlink for backwards
5788 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5790 i?86-*-solaris2* | x86_64-*-solaris2*)
5791 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5794 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5799 if test x$gcc_cv_solaris_crts = xyes; then
5800 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5801 [Define if the system-provided CRTs are present on Solaris.])
5804 AC_ARG_ENABLE(libssp,
5805 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5806 [case "${enableval}" in
5810 AC_MSG_ERROR([unknown libssp setting $enableval])
5814 # Test for stack protector support in target C library.
5815 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5816 gcc_cv_libc_provides_ssp,
5817 [gcc_cv_libc_provides_ssp=no
5818 if test "x$enable_libssp" = "xno"; then
5819 gcc_cv_libc_provides_ssp=yes
5820 elif test "x$enable_libssp" = "xyes"; then
5821 gcc_cv_libc_provides_ssp=no
5825 # All versions of musl provide stack protector
5826 gcc_cv_libc_provides_ssp=yes;;
5827 *-*-linux* | *-*-kfreebsd*-gnu)
5828 # glibc 2.4 and later provides __stack_chk_fail and
5829 # either __stack_chk_guard, or TLS access to stack guard canary.
5830 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5831 [if test -f $target_header_dir/features.h \
5832 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5833 $target_header_dir/features.h > /dev/null; then
5834 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5835 $target_header_dir/features.h > /dev/null && \
5836 test -f $target_header_dir/bits/uClibc_config.h && \
5837 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5838 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5839 gcc_cv_libc_provides_ssp=yes
5841 # all versions of Bionic support stack protector
5842 elif test -f $target_header_dir/sys/cdefs.h \
5843 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5844 $target_header_dir/sys/cdefs.h > /dev/null; then
5845 gcc_cv_libc_provides_ssp=yes
5849 # Avoid complicated tests (see
5850 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5851 # simply assert that glibc does provide this, which is true for all
5852 # realistically usable GNU/Hurd configurations.
5853 # All supported versions of musl provide it as well
5854 gcc_cv_libc_provides_ssp=yes;;
5855 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5856 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5857 [echo "no __stack_chk_fail on this target"])
5859 *) gcc_cv_libc_provides_ssp=no ;;
5863 if test x$gcc_cv_libc_provides_ssp = xyes; then
5864 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5865 [Define if your target C library provides stack protector support])
5868 # Check whether --enable-default-ssp was given.
5869 AC_ARG_ENABLE(default-ssp,
5870 [AS_HELP_STRING([--enable-default-ssp],
5871 [enable Stack Smashing Protection as default])],[
5872 if test x$gcc_cv_libc_provides_ssp = xyes; then
5874 ia64*-*-*) enable_default_ssp=no ;;
5875 *) enable_default_ssp=$enableval ;;
5878 enable_default_ssp=no
5880 enable_default_ssp=no)
5881 if test x$enable_default_ssp = xyes ; then
5882 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5883 [Define if your target supports default stack protector and it is enabled.])
5885 AC_SUBST([enable_default_ssp])
5887 # Test for <sys/sdt.h> on the target.
5888 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5889 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5891 if test -f $target_header_dir/sys/sdt.h; then
5893 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5894 [Define if your target C library provides sys/sdt.h])
5896 AC_MSG_RESULT($have_sys_sdt_h)
5898 # Check if TFmode long double should be used by default or not.
5899 # Some glibc targets used DFmode long double, but with glibc 2.4
5900 # and later they can use TFmode.
5902 powerpc*-*-linux* | \
5906 AC_ARG_WITH(long-double-128,
5907 [AS_HELP_STRING([--with-long-double-128],
5908 [use 128-bit long double by default])],
5909 gcc_cv_target_ldbl128="$with_long_double_128",
5910 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5911 [gcc_cv_target_ldbl128=no
5912 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5913 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5914 && gcc_cv_target_ldbl128=yes
5918 if test x$gcc_cv_target_ldbl128 = xyes; then
5919 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5920 [Define if TFmode long double should be the default])
5923 # Check if TFmode long double target should use the IBM extended double or IEEE
5924 # 128-bit floating point formats if long doubles are 128-bits long. The long
5925 # double type can only be switched on powerpc64 bit Linux systems where VSX is
5926 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
5928 AC_ARG_WITH([long-double-format],
5929 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
5930 [Specify whether PowerPC long double uses IEEE or IBM format])],[
5931 case "$target:$with_long_double_format" in
5932 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
5935 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
5936 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
5938 power7 | power8 | power9 | power1*)
5942 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
5943 supported if the default cpu is power7 or newer])
5944 with_long_double_format=""
5948 xpowerpc64*-*-linux*:*)
5949 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
5950 with_long_double_format=""
5953 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
5954 on 64-bit PowerPC VSX Linux systems])
5955 with_long_double_format=""
5960 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5961 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5962 gcc_cv_libc_provides_hwcap_in_tcb=no
5965 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5968 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5969 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5970 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5973 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5974 gcc_cv_target_dl_iterate_phdr=unknown
5976 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5977 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5978 # libdl there, both complicating its use and breaking compatibility
5979 # between Solaris 10 updates.
5980 *-*-solaris2.1[[1-9]]*)
5981 # <link.h> needs both a dl_iterate_phdr declaration and support for
5982 # compilation with largefile support.
5983 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5984 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5985 gcc_cv_target_dl_iterate_phdr=yes
5987 gcc_cv_target_dl_iterate_phdr=no
5990 *-*-dragonfly* | *-*-freebsd*)
5991 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5992 gcc_cv_target_dl_iterate_phdr=yes
5994 gcc_cv_target_dl_iterate_phdr=no
5998 gcc_cv_target_dl_iterate_phdr=yes
6001 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6002 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6003 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6004 [Define if your target C library provides the `dl_iterate_phdr' function.])
6006 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6008 # We no longer support different GC mechanisms. Emit an error if
6009 # the user configures with --with-gc.
6011 [AS_HELP_STRING([--with-gc={page,zone}],
6012 [this option is not supported anymore. It used to choose
6013 the garbage collection mechanism to use with the compiler])],
6014 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6017 # Libraries to use on the host. This will normally be set by the top
6018 # level Makefile. Here we simply capture the value for our Makefile.
6019 if test -z "${HOST_LIBS+set}"; then
6024 # Use the system's zlib library.
6027 dnl Very limited version of automake's enable-maintainer-mode
6029 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6030 dnl maintainer-mode is disabled by default
6031 AC_ARG_ENABLE(maintainer-mode,
6032 [AS_HELP_STRING([--enable-maintainer-mode],
6033 [enable make rules and dependencies not useful
6034 (and sometimes confusing) to the casual installer])],
6035 maintainer_mode=$enableval,
6038 AC_MSG_RESULT($maintainer_mode)
6040 if test "$maintainer_mode" = "yes"; then
6047 dnl Whether to prevent multiple front-ends from linking at the same time
6049 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6050 AC_ARG_ENABLE(link-mutex,
6051 [AS_HELP_STRING([--enable-link-mutex],
6052 [avoid linking multiple front-ends at once to avoid thrashing
6053 on the build machine])],
6054 do_link_mutex=$enableval,
6056 AC_MSG_RESULT($do_link_mutex)
6058 if test "$do_link_mutex" = "yes"; then
6063 AC_SUBST(DO_LINK_MUTEX)
6069 # Make empty files to contain the specs and options for each language.
6070 # Then add #include lines to for a compiler that has specs and/or options.
6076 # These (without "all_") are set in each config-lang.in.
6077 # `language' must be a single word so is spelled singularly.
6080 all_outputs='Makefile'
6081 # List of language makefile fragments.
6083 # Additional files for gengtype
6084 all_gtfiles="$target_gtfiles"
6086 # These are the languages that are set in --enable-languages,
6087 # and are available in the GCC tree.
6088 all_selected_languages=
6090 # Add the language fragments.
6091 # Languages are added via two mechanisms. Some information must be
6092 # recorded in makefile variables, these are defined in config-lang.in.
6093 # We accumulate them and plug them into the main Makefile.
6094 # The other mechanism is a set of hooks for each of the main targets
6095 # like `clean', `install', etc.
6097 language_hooks="Make-hooks"
6099 for lang in ${srcdir}/*/config-lang.in
6102 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6104 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6105 if test "x$lang_alias" = x
6107 echo "$lang doesn't set \$language." 1>&2
6110 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6111 subdirs="$subdirs $subdir"
6113 # $gcc_subdir is where the gcc integration files are to be found
6114 # for a language, both for internal compiler purposes (compiler
6115 # sources implementing front-end to GCC tree converters), and for
6116 # build infrastructure purposes (Make-lang.in, etc.)
6118 # This will be <subdir> (relative to $srcdir) if a line like
6119 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6120 # is found in <langdir>/config-lang.in, and will remain <langdir>
6123 # Except for the language alias (fetched above), the regular
6124 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6125 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6126 # only this and the language alias.
6128 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6129 if [ "$gcc_subdir" = "" ]; then
6130 gcc_subdir="$subdir"
6133 case ",$enable_languages," in
6135 all_selected_languages="$all_selected_languages $lang_alias"
6136 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6137 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6149 . ${srcdir}/$gcc_subdir/config-lang.in
6150 if test "x$language" = x
6152 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6157 case ",$enable_languages," in
6160 for i in $subdir_requires; do
6161 test -f "${srcdir}/$i/config-lang.in" && continue
6169 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6170 if test -f $srcdir/$gcc_subdir/lang.opt; then
6171 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6172 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6174 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6175 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6177 all_languages="$all_languages $language"
6178 all_compilers="$all_compilers $compilers"
6179 all_outputs="$all_outputs $outputs"
6180 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6181 case ",$enable_languages," in
6183 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6185 AC_SUBST(enable_lto)
6192 for language in $all_selected_languages
6194 check_languages="$check_languages check-$language"
6198 for language in $all_selected_languages
6200 selftest_languages="$selftest_languages selftest-$language"
6203 # We link each language in with a set of hooks, reached indirectly via
6204 # lang.${target}. Only do so for selected languages.
6208 target_list="all.cross start.encap rest.encap tags \
6209 install-common install-man install-info install-pdf install-html dvi \
6210 pdf html uninstall info man srcextra srcman srcinfo \
6211 mostlyclean clean distclean maintainer-clean install-plugin"
6213 for t in $target_list
6216 for lang in $all_selected_languages
6220 echo "lang.$t: $x" >> Make-hooks
6224 # Option include files
6227 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6228 option_includes="option-includes.mk"
6229 AC_SUBST_FILE(option_includes)
6237 echo "dir ." > .gdbinit
6238 echo "dir ${srcdir}" >> .gdbinit
6239 if test x$gdb_needs_out_file_path = xyes
6241 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6243 if test "x$subdirs" != x; then
6246 echo "dir ${srcdir}/$s" >> .gdbinit
6249 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6250 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6252 # Put a breakpoint on __asan_report_error to help with debugging buffer
6255 *-fsanitize=address*)
6256 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6260 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6261 AC_SUBST(gcc_tooldir)
6264 # Find a directory in which to install a shared libgcc.
6266 AC_ARG_ENABLE(version-specific-runtime-libs,
6267 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6268 [specify that runtime libraries should be
6269 installed in a compiler-specific directory])])
6271 # Substitute configuration variables
6274 AC_SUBST(all_compilers)
6275 AC_SUBST(all_gtfiles)
6276 AC_SUBST(all_lang_makefrags)
6277 AC_SUBST(all_languages)
6278 AC_SUBST(all_selected_languages)
6279 AC_SUBST(build_exeext)
6280 AC_SUBST(build_install_headers_dir)
6281 AC_SUBST(build_xm_file_list)
6282 AC_SUBST(build_xm_include_list)
6283 AC_SUBST(build_xm_defines)
6284 AC_SUBST(build_file_translate)
6285 AC_SUBST(check_languages)
6286 AC_SUBST(selftest_languages)
6287 AC_SUBST(cpp_install_dir)
6288 AC_SUBST(xmake_file)
6289 AC_SUBST(tmake_file)
6290 AC_SUBST(TM_ENDIAN_CONFIG)
6291 AC_SUBST(TM_MULTILIB_CONFIG)
6292 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6293 AC_SUBST(extra_gcc_objs)
6294 AC_SUBST(user_headers_inc_next_pre)
6295 AC_SUBST(user_headers_inc_next_post)
6296 AC_SUBST(extra_headers_list)
6297 AC_SUBST(extra_objs)
6298 AC_SUBST(extra_programs)
6299 AC_SUBST(float_h_file)
6300 AC_SUBST(gcc_config_arguments)
6301 AC_SUBST(gcc_gxx_include_dir)
6302 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6303 AC_SUBST(host_exeext)
6304 AC_SUBST(host_xm_file_list)
6305 AC_SUBST(host_xm_include_list)
6306 AC_SUBST(host_xm_defines)
6307 AC_SUBST(out_host_hook_obj)
6309 AC_SUBST(lang_opt_files)
6310 AC_SUBST(lang_specs_files)
6311 AC_SUBST(lang_tree_files)
6312 AC_SUBST(local_prefix)
6314 AC_SUBST(objc_boehm_gc)
6316 AC_SUBST(out_object_file)
6317 AC_SUBST(common_out_file)
6318 AC_SUBST(common_out_object_file)
6319 AC_SUBST(tm_file_list)
6320 AC_SUBST(tm_include_list)
6321 AC_SUBST(tm_defines)
6322 AC_SUBST(tm_p_file_list)
6323 AC_SUBST(tm_p_include_list)
6324 AC_SUBST(xm_file_list)
6325 AC_SUBST(xm_include_list)
6326 AC_SUBST(xm_defines)
6327 AC_SUBST(use_gcc_stdint)
6328 AC_SUBST(c_target_objs)
6329 AC_SUBST(cxx_target_objs)
6330 AC_SUBST(fortran_target_objs)
6331 AC_SUBST(target_cpu_default)
6333 AC_SUBST_FILE(language_hooks)
6336 if test x${build} = x${host} ; then
6337 if test x${host} = x${target} ; then
6338 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6340 echo "Links are now set up to build a cross-compiler" 1>&2
6341 echo " from ${host} to ${target}." 1>&2
6344 if test x${host} = x${target} ; then
6345 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6346 echo " for ${target}." 1>&2
6348 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6349 echo " from ${host} to ${target}." 1>&2
6353 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6354 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6356 AC_ARG_VAR(ISLLIBS,[How to link isl])
6357 AC_ARG_VAR(ISLINC,[How to find isl include files])
6358 if test "x${ISLLIBS}" != "x" ; then
6359 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6363 AC_SUBST(pluginlibs)
6364 AC_SUBST(enable_plugin)
6365 if test x"$enable_plugin" = x"yes"; then
6366 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6370 # Enable --enable-host-shared
6371 AC_ARG_ENABLE(host-shared,
6372 [AS_HELP_STRING([--enable-host-shared],
6373 [build host code as shared libraries])],
6374 [PICFLAG=-fPIC], [PICFLAG=])
6375 AC_SUBST(enable_host_shared)
6379 AC_ARG_ENABLE(libquadmath-support,
6380 [AS_HELP_STRING([--disable-libquadmath-support],
6381 [disable libquadmath support for Fortran])],
6382 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6383 ENABLE_LIBQUADMATH_SUPPORT=yes)
6384 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6385 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6386 [Define to 1 to enable libquadmath support])
6390 # Specify what hash style to use by default.
6391 AC_ARG_WITH([linker-hash-style],
6392 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6393 [specify the linker hash style])],
6394 [case x"$withval" in
6396 LINKER_HASH_STYLE=sysv
6399 LINKER_HASH_STYLE=gnu
6402 LINKER_HASH_STYLE=both
6405 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6408 [LINKER_HASH_STYLE=''])
6409 if test x"${LINKER_HASH_STYLE}" != x; then
6410 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6411 [The linker hash style])
6414 # Specify what should be the default of -fdiagnostics-color option.
6415 AC_ARG_WITH([diagnostics-color],
6416 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6417 [specify the default of -fdiagnostics-color option
6418 auto-if-env stands for -fdiagnostics-color=auto if
6419 GCC_COLOR environment variable is present and
6420 -fdiagnostics-color=never otherwise])],
6421 [case x"$withval" in
6423 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6426 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6429 DIAGNOSTICS_COLOR_DEFAULT=-1
6432 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6435 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6438 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6439 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6440 [The default for -fdiagnostics-color option])
6442 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6443 # of jit/jit-playback.c.
6444 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6445 echo "gcc_driver_version: ${gcc_driver_version}"
6446 cat > gcc-driver-name.h <<EOF
6447 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6450 # Check whether --enable-default-pie was given.
6451 AC_ARG_ENABLE(default-pie,
6452 [AS_HELP_STRING([--enable-default-pie],
6453 [enable Position Independent Executable as default])],
6454 enable_default_pie=$enableval,
6455 enable_default_pie=no)
6456 if test x$enable_default_pie = xyes ; then
6457 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6458 [Define if your target supports default PIE and it is enabled.])
6460 AC_SUBST([enable_default_pie])
6462 # Check if -fno-PIE works.
6463 AC_CACHE_CHECK([for -fno-PIE option],
6465 [saved_CXXFLAGS="$CXXFLAGS"
6466 CXXFLAGS="$CXXFLAGS -fno-PIE"
6467 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6468 [gcc_cv_c_no_fpie=yes],
6469 [gcc_cv_c_no_fpie=no])
6470 CXXFLAGS="$saved_CXXFLAGS"])
6471 if test "$gcc_cv_c_no_fpie" = "yes"; then
6472 NO_PIE_CFLAGS="-fno-PIE"
6474 AC_SUBST([NO_PIE_CFLAGS])
6476 # Check if -no-pie works.
6477 AC_CACHE_CHECK([for -no-pie option],
6479 [saved_LDFLAGS="$LDFLAGS"
6480 LDFLAGS="$LDFLAGS -no-pie"
6481 AC_LINK_IFELSE([int main(void) {return 0;}],
6482 [gcc_cv_no_pie=yes],
6484 LDFLAGS="$saved_LDFLAGS"])
6485 if test "$gcc_cv_no_pie" = "yes"; then
6486 NO_PIE_FLAG="-no-pie"
6488 AC_SUBST([NO_PIE_FLAG])
6490 # Check linker supports '-z bndplt'
6491 ld_bndplt_support=no
6492 AC_MSG_CHECKING(linker -z bndplt option)
6493 if test x"$ld_is_gold" = xno; then
6494 if test $in_tree_ld = yes ; then
6495 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6496 ld_bndplt_support=yes
6498 elif test x$gcc_cv_ld != x; then
6499 # Check if linker supports -a bndplt option
6500 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6501 ld_bndplt_support=yes
6505 if test x"$ld_bndplt_support" = xyes; then
6506 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6507 [Define if your linker supports -z bndplt])
6509 AC_MSG_RESULT($ld_bndplt_support)
6511 # Check linker supports '--push-state'/'--pop-state'
6512 ld_pushpopstate_support=no
6513 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6514 if test x"$ld_is_gold" = xno; then
6515 if test $in_tree_ld = yes ; then
6516 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6517 ld_pushpopstate_support=yes
6519 elif test x$gcc_cv_ld != x; then
6520 # Check if linker supports --push-state/--pop-state options
6521 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6522 ld_pushpopstate_support=yes
6526 if test x"$ld_pushpopstate_support" = xyes; then
6527 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6528 [Define if your linker supports --push-state/--pop-state])
6530 AC_MSG_RESULT($ld_pushpopstate_support)
6532 # Configure the subdirectories
6533 # AC_CONFIG_SUBDIRS($subdirs)
6535 # Create the Makefile
6536 # and configure language subdirectories
6537 AC_CONFIG_FILES($all_outputs)
6539 AC_CONFIG_COMMANDS([default],
6541 case ${CONFIG_HEADERS} in
6542 *auto-host.h:config.in*)
6545 # Make sure all the subdirs exist.
6546 for d in $subdirs doc build common c-family
6548 test -d $d || mkdir $d
6551 [subdirs='$subdirs'])