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 # Enable __cxa_atexit for C++.
815 AC_ARG_ENABLE(__cxa_atexit,
816 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
819 # Enable C extension for decimal float if target supports it.
820 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
822 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
823 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
824 [Define to 1 to enable decimal float extension to C.])
826 # Use default_decimal_float for dependency.
827 enable_decimal_float=$default_decimal_float
829 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
831 [Define to 1 to specify that we are using the BID decimal floating
832 point format instead of DPD])
834 # Enable C extension for fixed-point arithmetic.
835 AC_ARG_ENABLE(fixed-point,
836 [AS_HELP_STRING([--enable-fixed-point],
837 [enable fixed-point arithmetic extension to C])],
842 enable_fixed_point=yes
846 enable_fixed_point=yes
849 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
850 enable_fixed_point=no
854 AC_SUBST(enable_fixed_point)
856 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
857 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
858 [Define to 1 to enable fixed-point arithmetic extension to C.])
861 # Pass with no value to take the default
862 # Pass with a value to specify a thread package
863 AC_ARG_ENABLE(threads,
864 [AS_HELP_STRING([[--enable-threads[=LIB]]],
865 [enable thread usage for target GCC,
866 using LIB thread package])],,
870 [AS_HELP_STRING([--enable-tls],
871 [enable or disable generation of tls code
872 overriding the assembler check for tls support])],
876 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
877 Valid choices are 'yes' and 'no'.]) ;;
881 AC_ARG_ENABLE(vtable-verify,
882 [AS_HELP_STRING([--enable-vtable-verify],
883 [enable vtable verification feature])],,
884 [enable_vtable_verify=no])
885 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
886 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
887 [Define 0/1 if vtable verification feature is enabled.])
889 AC_ARG_ENABLE(objc-gc,
890 [AS_HELP_STRING([--enable-objc-gc],
891 [enable the use of Boehm's garbage collector with
892 the GNU Objective-C runtime])],
893 if test x$enable_objc_gc = xno; then
901 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
902 dwarf2="$with_dwarf2",
905 AC_ARG_ENABLE(shared,
906 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
908 case $enable_shared in
912 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
913 for pkg in $enableval; do
914 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
921 ], [enable_shared=yes])
922 AC_SUBST(enable_shared)
925 [ --disable-gcov don't provide libgcov and related host tools],
926 [], [enable_gcov=yes])
927 AC_SUBST(enable_gcov)
930 [AS_HELP_STRING([--with-specs=SPECS],
931 [add SPECS to driver command-line processing])],
932 [CONFIGURE_SPECS=$withval],
935 AC_SUBST(CONFIGURE_SPECS)
937 ACX_PKGVERSION([GCC])
938 ACX_BUGURL([https://gcc.gnu.org/bugs/])
940 # Sanity check enable_languages in case someone does not run the toplevel
941 # configure # script.
942 AC_ARG_ENABLE(languages,
943 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
944 [case ,${enable_languages}, in
946 # go safe -- we cannot be much sure without the toplevel
948 # analysis of which target libs are present and usable
952 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
957 enable_languages=c,${enable_languages}
960 [enable_languages=c])
962 if test x"$enable_as_accelerator_for" != x; then
963 AC_DEFINE(ACCEL_COMPILER, 1,
964 [Define if this compiler should be built as the offload target compiler.])
965 enable_as_accelerator=yes
968 # In this case we expect offload compiler to be built as native, so we
969 # need to rename the driver to avoid clashes with host's drivers.
970 program_transform_name="s&^&${target}-&" ;;
972 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
973 program_transform_name=`echo $program_transform_name | sed $sedscript`
974 accel_dir_suffix=/accel/${target_noncanonical}
975 real_target_noncanonical=${enable_as_accelerator_for}
977 AC_SUBST(enable_as_accelerator)
978 AC_SUBST(real_target_noncanonical)
979 AC_SUBST(accel_dir_suffix)
981 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
982 tgt=`echo $tgt | sed 's/=.*//'`
984 if echo "$tgt" | grep "^hsa" > /dev/null ; then
990 if test x"$offload_targets" = x; then
993 offload_targets="$offload_targets,$tgt"
996 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
997 [Define to offload targets, separated by commas.])
998 if test x"$enable_offloading" != x; then
999 AC_DEFINE(ENABLE_OFFLOADING, 1,
1000 [Define this to enable support for offloading.])
1002 AC_DEFINE(ENABLE_OFFLOADING, 0,
1003 [Define this to enable support for offloading.])
1006 if test x"$enable_hsa" = x1 ; then
1007 AC_DEFINE(ENABLE_HSA, 1,
1008 [Define this to enable support for generating HSAIL.])
1011 AC_ARG_WITH(multilib-list,
1012 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1014 with_multilib_list=default)
1016 # -------------------------
1017 # Checks for other programs
1018 # -------------------------
1022 # Find some useful tools
1024 # We need awk to create options.c and options.h.
1025 # Bail out if it's missing.
1027 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1034 AC_SUBST(ranlib_flags)
1038 # See if cmp has --ignore-initial.
1039 gcc_AC_PROG_CMP_IGNORE_INITIAL
1041 # See if we have the mktemp command.
1042 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1044 # See if makeinfo has been installed and is modern enough
1045 # that we can use it.
1046 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1047 [GNU texinfo.* \([0-9][0-9.]*\)],
1048 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1049 if test $gcc_cv_prog_makeinfo_modern = no; then
1051 *** Makeinfo is missing or too old.
1052 *** Info documentation will not be built.])
1057 AC_SUBST(BUILD_INFO)
1059 # Is pod2man recent enough to regenerate manpages?
1060 AC_MSG_CHECKING([for recent Pod::Man])
1061 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1063 GENERATED_MANPAGES=generated-manpages
1068 AC_SUBST(GENERATED_MANPAGES)
1070 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1073 dnl Don't use AC_PROG_LEX; we insist on flex.
1074 dnl LEXLIB is not useful in gcc.
1075 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1078 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1080 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1081 # check for build == host before using them.
1084 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1085 && test -d ../binutils ; then
1086 NM='${objdir}/../binutils/nm-new'
1088 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1092 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1093 && test -d ../binutils ; then
1094 AR='${objdir}/../binutils/ar'
1096 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1099 # The jit documentation looks better if built with sphinx, but can be
1100 # built with texinfo if sphinx is not available.
1101 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1102 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1104 # --------------------
1105 # Checks for C headers
1106 # --------------------
1108 # Need to reject headers which give warnings, so that the -Werror bootstrap
1109 # works later. *sigh* This needs to come before all header checks.
1116 AC_HEADER_TIOCGWINSZ
1117 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1118 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1119 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1120 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1122 # Check for thread headers.
1123 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1124 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1126 # These tests can't be done till we know if we have limits.h.
1130 # ----------------------
1131 # Checks for C++ headers
1132 # ----------------------
1134 dnl Autoconf will give an error in the configure script if there is no
1135 dnl C++ preprocessor. Hack to prevent that.
1136 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1138 m4_popdef([AC_MSG_ERROR])[]dnl
1140 AC_CHECK_HEADERS(unordered_map)
1141 AC_CHECK_HEADERS(tr1/unordered_map)
1142 AC_CHECK_HEADERS(ext/hash_map)
1145 # Dependency checking.
1149 AC_CONFIG_COMMANDS([gccdepdir],[
1150 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1151 for lang in $subdirs c-family common
1153 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1154 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1156 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1163 # These libraries may be used by collect2.
1164 # We may need a special search path to get them linked.
1165 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1167 for libs in '' -lld -lmld \
1168 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1169 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1172 AC_TRY_LINK_FUNC(ldopen,
1173 [gcc_cv_collect2_libs="$libs"; break])
1176 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1177 case $gcc_cv_collect2_libs in
1179 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1181 AC_SUBST(COLLECT2_LIBS)
1183 # When building Ada code on Alpha, we need exc_resume which is usually in
1184 # -lexc. So test for it.
1187 AC_SEARCH_LIBS(exc_resume, exc)
1190 AC_SUBST(GNAT_LIBEXC)
1192 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1195 AC_SEARCH_LIBS(kstat_open, kstat)
1196 EXTRA_GCC_LIBS="$LIBS"
1198 AC_SUBST(EXTRA_GCC_LIBS)
1200 # Some systems put ldexp and frexp in libm instead of libc; assume
1201 # they're both in the same place. jcf-dump needs them.
1204 AC_SEARCH_LIBS(ldexp, m)
1209 # Use <inttypes.h> only if it exists,
1210 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1212 AC_MSG_CHECKING(for inttypes.h)
1213 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1214 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1215 [[#define __STDC_FORMAT_MACROS
1216 #include <sys/types.h>
1217 #include <inttypes.h>]],
1222 [gcc_cv_header_inttypes_h=yes],
1223 [gcc_cv_header_inttypes_h=no])])
1224 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1225 if test $gcc_cv_header_inttypes_h = yes; then
1226 AC_DEFINE(HAVE_INTTYPES_H, 1,
1227 [Define if you have a working <inttypes.h> header file.])
1230 dnl Disabled until we have a complete test for buggy enum bitfields.
1231 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1233 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1234 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1235 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1236 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1237 putchar_unlocked putc_unlocked)
1238 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1239 popen sysconf strsignal getrusage nl_langinfo \
1240 gettimeofday mbstowcs wcswidth mmap setlocale \
1241 gcc_UNLOCKED_FUNCS madvise)
1243 if test x$ac_cv_func_mbstowcs = xyes; then
1244 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1245 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1251 [gcc_cv_func_mbstowcs_works=yes],
1252 [gcc_cv_func_mbstowcs_works=no],
1253 [gcc_cv_func_mbstowcs_works=yes])])
1254 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1255 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1256 [Define this macro if mbstowcs does not crash when its
1257 first argument is NULL.])
1261 AC_CHECK_TYPE(ssize_t, int)
1262 AC_CHECK_TYPE(caddr_t, char *)
1264 GCC_AC_FUNC_MMAP_BLACKLIST
1268 # Under VMS, vfork works very differently than on Unix. The standard test
1269 # won't work, and it isn't easily adaptable. It makes more sense to
1271 ac_cv_func_vfork_works=yes
1278 # Until we have in-tree GNU iconv:
1280 if test -f "$LTLIBICONV"; then
1281 LIBICONV_DEP=$LTLIBICONV
1283 AC_SUBST(LIBICONV_DEP)
1289 # We will need to find libiberty.h and ansidecl.h
1290 saved_CFLAGS="$CFLAGS"
1291 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1292 saved_CXXFLAGS="$CXXFLAGS"
1293 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1295 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1296 # normal autoconf function for these. But force definition of
1297 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1298 # basename handling in libiberty.h.
1299 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1300 #undef HAVE_DECL_BASENAME
1301 #define HAVE_DECL_BASENAME 1
1302 #include "ansidecl.h"
1303 #include "system.h"])
1305 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1306 madvise stpcpy strnlen strsignal strverscmp \
1307 strtol strtoul strtoll strtoull setenv unsetenv \
1308 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1309 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1310 #include "ansidecl.h"
1311 #include "system.h"])
1313 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1314 #include "ansidecl.h"
1316 #ifdef HAVE_SYS_RESOURCE_H
1317 #include <sys/resource.h>
1321 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1322 #include "ansidecl.h"
1324 #ifdef HAVE_SYS_RESOURCE_H
1325 #include <sys/resource.h>
1327 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1328 [Define to `long' if <sys/resource.h> doesn't define.])])
1330 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1331 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1332 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1333 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1334 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1335 #include "ansidecl.h"
1344 gcc_AC_CHECK_DECLS(times, , ,[
1345 #include "ansidecl.h"
1347 #ifdef HAVE_SYS_TIMES_H
1348 #include <sys/times.h>
1352 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1353 #include "ansidecl.h"
1358 # More time-related stuff.
1359 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1360 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1361 #include "ansidecl.h"
1363 #ifdef HAVE_SYS_TIMES_H
1364 #include <sys/times.h>
1366 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1367 if test $ac_cv_struct_tms = yes; then
1368 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1369 [Define if <sys/times.h> defines struct tms.])
1372 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1373 # revisit after autoconf 2.50.
1374 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1375 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1376 #include "ansidecl.h"
1378 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1379 if test $gcc_cv_type_clock_t = yes; then
1380 AC_DEFINE(HAVE_CLOCK_T, 1,
1381 [Define if <time.h> defines clock_t.])
1384 # Check if F_SETLKW is supported by fcntl.
1385 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1386 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1387 #include <fcntl.h>]], [[
1393 return fcntl (1, F_SETLKW, &fl);]])],
1394 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1395 if test $ac_cv_f_setlkw = yes; then
1396 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1397 [Define if F_SETLKW supported by fcntl.])
1400 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1401 CFLAGS="$saved_CFLAGS"
1402 CXXFLAGS="$saved_CXXFLAGS"
1404 # mkdir takes a single argument on some systems.
1405 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1413 # With Setjmp/Longjmp based exception handling.
1414 AC_ARG_ENABLE(sjlj-exceptions,
1415 [AS_HELP_STRING([--enable-sjlj-exceptions],
1416 [arrange to use setjmp/longjmp exception handling])],
1419 if test $enableval != yes; then
1420 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1425 force_sjlj_exceptions=yes],
1428 force_sjlj_exceptions=yes
1432 force_sjlj_exceptions=yes
1436 force_sjlj_exceptions=no
1439 if test $force_sjlj_exceptions = yes; then
1440 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1441 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1442 [Define 0/1 to force the choice for exception handling model.])
1445 # --------------------------------------------------------
1446 # Build, host, and target specific configuration fragments
1447 # --------------------------------------------------------
1449 # Collect build-machine-specific information.
1450 . ${srcdir}/config.build || exit 1
1452 # Collect host-machine-specific information.
1453 . ${srcdir}/config.host || exit 1
1457 # Collect target-machine-specific information.
1458 . ${srcdir}/config.gcc || exit 1
1460 extra_objs="${host_extra_objs} ${extra_objs}"
1461 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1463 # Default the target-machine variables that were not explicitly set.
1464 if test x"$tm_file" = x
1465 then tm_file=$cpu_type/$cpu_type.h; fi
1467 if test x"$extra_headers" = x
1468 then extra_headers=; fi
1470 if test x$md_file = x
1471 then md_file=$cpu_type/$cpu_type.md; fi
1473 if test x$out_file = x
1474 then out_file=$cpu_type/$cpu_type.c; fi
1476 if test x"$tmake_file" = x
1477 then tmake_file=$cpu_type/t-$cpu_type
1480 # Support --enable-initfini-array.
1481 if test x$enable_initfini_array != xno; then
1482 tm_file="${tm_file} initfini-array.h"
1485 if test x"$dwarf2" = xyes
1486 then tm_file="$tm_file tm-dwarf2.h"
1489 # Say what files are being used for the output code and MD file.
1490 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1491 echo "Using \`$srcdir/config/$md_file' as machine description file."
1493 # If any of the xm_file variables contain nonexistent files, warn
1494 # about them and drop them.
1497 for x in $build_xm_file; do
1498 if test -f $srcdir/config/$x
1500 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1506 for x in $host_xm_file; do
1507 if test -f $srcdir/config/$x
1509 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1515 for x in $xm_file; do
1516 if test -f $srcdir/config/$x
1518 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1524 for f in $tm_file; do
1527 if test $count = ax; then
1528 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1530 echo "Using the following target machine macro files:"
1531 for f in $tm_file; do
1532 echo " $srcdir/config/$f"
1536 if test x$use_long_long_for_widest_fast_int = xyes; then
1537 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1538 [Define to 1 if the 'long long' type is wider than 'long' but still
1539 efficiently supported by the host hardware.])
1542 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1543 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1545 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1546 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1549 for f in $host_xm_file; do
1552 if test $count = a; then
1554 elif test $count = ax; then
1555 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1557 echo "Using the following host machine macro files:"
1558 for f in $host_xm_file; do
1559 echo " $srcdir/config/$f"
1562 echo "Using ${out_host_hook_obj} for host machine hooks."
1564 if test "$host_xm_file" != "$build_xm_file"; then
1566 for f in $build_xm_file; do
1569 if test $count = a; then
1571 elif test $count = ax; then
1572 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1574 echo "Using the following build machine macro files:"
1575 for f in $build_xm_file; do
1576 echo " $srcdir/config/$f"
1581 if test -n "$configured_native_system_header_dir"; then
1582 native_system_header_dir=$configured_native_system_header_dir
1584 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1585 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1589 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1590 gcc_cv_mcontext_underscores,
1592 #include <sys/cdefs.h>
1593 #include <sys/signal.h>
1594 #include <ucontext.h>
1595 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1597 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1598 if test $gcc_cv_mcontext_underscores = yes; then
1599 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1600 [mcontext_t fields start with __])
1609 # Check if a valid thread package
1610 case ${enable_threads} in
1613 target_thread_file='single'
1617 target_thread_file='single'
1619 aix | dce | lynx | mipssde | posix | rtems | \
1620 single | tpf | vxworks | win32)
1621 target_thread_file=${enable_threads}
1624 echo "${enable_threads} is an unknown thread package" 1>&2
1629 if test x${thread_file} = x; then
1630 # No thread file set by target-specific clauses in config.gcc,
1631 # so use file chosen by default logic above
1632 thread_file=${target_thread_file}
1640 if test x$enable___cxa_atexit = xyes || \
1641 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1642 if test x$host = x$target; then
1644 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1645 # keyed to flag_use_cxa_atexit
1653 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1654 [echo "__cxa_atexit can't be enabled on this target"])
1658 # We can't check for __cxa_atexit when building a cross, so assume
1662 if test x$use_cxa_atexit = xyes; then
1663 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1664 [Define if you want to use __cxa_atexit, rather than atexit, to
1665 register C++ destructors for local statics and global objects.
1666 This is essential for fully standards-compliant handling of
1667 destructors, but requires __cxa_atexit in libc.])
1671 # Look for a file containing extra machine modes.
1672 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1673 extra_modes_file='$(srcdir)'/config/${extra_modes}
1674 AC_SUBST(extra_modes_file)
1675 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1676 [Define to the name of a file containing a list of extra machine modes
1677 for this architecture.])
1680 # Convert extra_options into a form suitable for Makefile use.
1683 for f in $extra_options; do
1684 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1685 all_opt_files="$all_opt_files $srcdir/config/$f"
1687 AC_SUBST(extra_opt_files)
1689 # auto-host.h is the file containing items generated by autoconf and is
1690 # the first file included by config.h.
1691 # If host=build, it is correct to have bconfig include auto-host.h
1692 # as well. If host!=build, we are in error and need to do more
1693 # work to find out the build config parameters.
1694 if test x$host = x$build
1696 build_auto=auto-host.h
1698 # We create a subdir, then run autoconf in the subdir.
1699 # To prevent recursion we set host and build for the new
1700 # invocation of configure to the build for this invocation
1707 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1708 *) realsrcdir=../${srcdir};;
1710 # Clearing GMPINC is necessary to prevent host headers being
1711 # used by the build compiler. Defining GENERATOR_FILE stops
1712 # system.h from including gmp.h.
1713 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1714 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1715 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1716 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1717 ${realsrcdir}/configure \
1718 --enable-languages=${enable_languages-all} \
1719 --target=$target_alias --host=$build_alias --build=$build_alias
1721 # We just finished tests for the build machine, so rename
1722 # the file auto-build.h in the gcc directory.
1723 mv auto-host.h ../auto-build.h
1726 build_auto=auto-build.h
1728 AC_SUBST(build_subdir)
1730 tm_file="${tm_file} defaults.h"
1731 tm_p_file="${tm_p_file} tm-preds.h"
1732 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1733 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1734 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1735 # put this back in temporarily.
1736 xm_file="auto-host.h ansidecl.h ${xm_file}"
1743 # Compile in configure arguments.
1744 if test -f configargs.h ; then
1745 # Being re-configured.
1746 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1747 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1749 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1752 # Double all backslashes and backslash all quotes to turn
1753 # gcc_config_arguments into a C string.
1754 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1755 $gcc_config_arguments
1757 gcc_config_arguments_str=`cat conftest.out`
1760 cat > configargs.h <<EOF
1761 /* Generated automatically. */
1762 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1763 static const char thread_model[] = "$thread_file";
1765 static const struct {
1766 const char *name, *value;
1767 } configure_default_options[] = $configure_default_options;
1772 gcc_BASEVER=`cat $srcdir/BASE-VER`
1773 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1774 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1775 if test -f $srcdir/REVISION ; then
1776 gcc_REVISION=`cat $srcdir/REVISION`
1780 cat > plugin-version.h <<EOF
1781 #include "configargs.h"
1783 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1784 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1785 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1786 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1788 static char basever[] = "$gcc_BASEVER";
1789 static char datestamp[] = "$gcc_DATESTAMP";
1790 static char devphase[] = "$gcc_DEVPHASE";
1791 static char revision[] = "$gcc_REVISION";
1793 /* FIXME plugins: We should make the version information more precise.
1794 One way to do is to add a checksum. */
1796 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1798 configuration_arguments};
1802 # Determine what GCC version number to use in filesystem paths.
1805 # Internationalization
1806 ZW_GNU_GETTEXT_SISTER_DIR
1808 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1809 # -liconv on the link line twice.
1810 case "$LIBINTL" in *$LIBICONV*)
1814 AC_ARG_ENABLE(secureplt,
1815 [AS_HELP_STRING([--enable-secureplt],
1816 [enable -msecure-plt by default for PowerPC])],
1819 AC_ARG_ENABLE(mingw-wildcard,
1820 [AS_HELP_STRING([--enable-mingw-wildcard],
1821 [Set whether to expand wildcard on command-line.
1822 Default to platform configuration])],
1823 [],[enable_mingw_wildcard=platform])
1824 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1825 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1826 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1827 [Value to set mingw's _dowildcard to.])])
1829 AC_ARG_ENABLE(leading-mingw64-underscores,
1830 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1831 [enable leading underscores on 64 bit mingw targets]),
1833 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1834 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1835 [Define if we should use leading underscore on 64 bit mingw targets])])
1838 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1841 AC_ARG_ENABLE(frame-pointer,
1842 [AS_HELP_STRING([--enable-frame-pointer],
1843 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1846 linux* | darwin[[8912]]*)
1847 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1849 enable_frame_pointer=no
1852 enable_frame_pointer=yes
1857 # Windows32 Registry support for specifying GCC installation paths.
1858 AC_ARG_ENABLE(win32-registry,
1859 [AS_HELP_STRING([--disable-win32-registry],
1860 [disable lookup of installation paths in the
1861 Registry on Windows hosts])
1862 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1863 AS_HELP_STRING([--enable-win32-registry=KEY],
1864 [use KEY instead of GCC version as the last portion
1865 of the registry key])],,)
1868 win32 | pe | cygwin* | mingw32*)
1869 if test "x$enable_win32_registry" != xno; then
1870 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1873 if test "x$enable_win32_registry" != xno; then
1874 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1875 [Define to 1 if installation paths should be looked up in the Windows
1876 Registry. Ignored on non-Windows hosts.])
1878 if test "x$enable_win32_registry" != xyes \
1879 && test "x$enable_win32_registry" != x; then
1880 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1881 [Define to be the last component of the Windows registry key under which
1882 to look for installation paths. The full key used will be
1883 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1884 The default is the GCC version number.])
1890 # Get an absolute path to the GCC top-level source directory
1891 holddir=`${PWDCMD-pwd}`
1893 topdir=`${PWDCMD-pwd}`
1896 # Conditionalize the makefile for this host machine.
1898 for f in ${host_xmake_file}
1900 if test -f ${srcdir}/config/$f
1902 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1906 # Conditionalize the makefile for this target machine.
1908 for f in ${tmake_file}
1910 if test -f ${srcdir}/config/$f
1912 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1915 tmake_file="${tmake_file_}"
1917 out_object_file=`basename $out_file .c`.o
1918 common_out_object_file=`basename $common_out_file .c`.o
1920 tm_file_list="options.h"
1921 tm_include_list="options.h insn-constants.h"
1922 for f in $tm_file; do
1925 f=`echo $f | sed 's/^..//'`
1926 tm_file_list="${tm_file_list} $f"
1927 tm_include_list="${tm_include_list} $f"
1930 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1931 tm_include_list="${tm_include_list} $f"
1934 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1935 tm_include_list="${tm_include_list} config/$f"
1942 for f in $tm_p_file; do
1945 tm_p_file_list="${tm_p_file_list} $f"
1946 tm_p_include_list="${tm_p_include_list} $f"
1949 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1950 tm_p_include_list="${tm_p_include_list} config/$f"
1956 for f in $xm_file; do
1959 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1960 xm_include_list="${xm_include_list} $f"
1963 xm_file_list="${xm_file_list} $f"
1964 xm_include_list="${xm_include_list} $f"
1967 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1968 xm_include_list="${xm_include_list} config/$f"
1974 host_xm_include_list=
1975 for f in $host_xm_file; do
1978 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1979 host_xm_include_list="${host_xm_include_list} $f"
1982 host_xm_file_list="${host_xm_file_list} $f"
1983 host_xm_include_list="${host_xm_include_list} $f"
1986 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1987 host_xm_include_list="${host_xm_include_list} config/$f"
1993 for f in $build_xm_file; do
1996 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1997 build_xm_include_list="${build_xm_include_list} $f"
1999 auto-build.h | auto-host.h )
2000 build_xm_file_list="${build_xm_file_list} $f"
2001 build_xm_include_list="${build_xm_include_list} $f"
2004 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2005 build_xm_include_list="${build_xm_include_list} config/$f"
2010 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2011 # cross-compiler which does not use the native headers and libraries.
2012 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2013 CROSS= AC_SUBST(CROSS)
2014 ALL=all.internal AC_SUBST(ALL)
2015 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2016 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2018 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2019 test x$build != x$host || test "x$with_build_sysroot" != x; then
2020 if test "x$with_build_sysroot" != x; then
2021 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2023 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2026 if test x$host != x$target
2028 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2030 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2031 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2032 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2035 if test "x$with_build_sysroot" != "x"; then
2036 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2037 elif test "x$with_sysroot" = x; then
2038 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2039 elif test "x$with_sysroot" = xyes; then
2040 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2042 target_header_dir="${with_sysroot}${native_system_header_dir}"
2045 target_header_dir=${native_system_header_dir}
2048 # If this is a cross-compiler that does not
2049 # have its own set of headers then define
2052 # If this is using newlib, without having the headers available now,
2053 # then define inhibit_libc in LIBGCC2_CFLAGS.
2054 # This prevents libgcc2 from containing any code which requires libc
2056 : ${inhibit_libc=false}
2057 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2058 test x$with_newlib = xyes ; } &&
2059 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2062 AC_SUBST(inhibit_libc)
2064 # When building gcc with a cross-compiler, we need to adjust things so
2065 # that the generator programs are still built with the native compiler.
2066 # Also, we cannot run fixincludes.
2068 # These are the normal (build=host) settings:
2069 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2070 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2071 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2072 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2073 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2074 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2076 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2077 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2079 # And these apply if build != host, or we are generating coverage data
2080 if test x$build != x$host || test "x$coverage_flags" != x
2082 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2083 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2084 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2086 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2087 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2088 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2089 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2091 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2092 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2094 # Expand extra_headers to include complete path.
2095 # This substitutes for lots of t-* files.
2097 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2098 for file in ${extra_headers} ; do
2099 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2102 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2103 if test x"$use_gcc_tgmath" = xyes
2104 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2107 # Define collect2 in Makefile.
2108 case $host_can_use_collect2 in
2110 *) collect2='collect2$(exeext)' ;;
2112 AC_SUBST([collect2])
2114 # Add a definition of USE_COLLECT2 if system wants one.
2115 case $use_collect2 in
2116 no) use_collect2= ;;
2119 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2120 xm_defines="${xm_defines} USE_COLLECT2"
2121 case $host_can_use_collect2 in
2123 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2129 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2130 [Define to the name of the LTO plugin DSO that must be
2131 passed to the linker's -plugin=LIB option.])
2133 # ---------------------------
2134 # Assembler & linker features
2135 # ---------------------------
2137 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2138 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2139 # However when ld-new is first executed from the build tree, libtool will
2140 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2141 # to the build tree. While doing this we need to use the previous-stage
2142 # linker, or we have an infinite loop. The presence of a shell script as
2143 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2144 # the gcc/collect-ld script. So we need to know how libtool works, or
2145 # exec-tool will fail.
2147 m4_defun([_LT_CONFIG_COMMANDS], [])
2150 AC_SUBST(enable_fast_install)
2152 # Identify the assembler which will work hand-in-glove with the newly
2153 # built GCC, so that we can examine its features. This is the assembler
2154 # which will be driven by the driver program.
2156 # If build != host, and we aren't building gas in-tree, we identify a
2157 # build->target assembler and hope that it will have the same features
2158 # as the host->target assembler we'll be using.
2159 gcc_cv_gas_major_version=
2160 gcc_cv_gas_minor_version=
2161 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2163 m4_pattern_allow([AS_FOR_TARGET])dnl
2164 AS_VAR_SET_IF(gcc_cv_as,, [
2165 if test -x "$DEFAULT_ASSEMBLER"; then
2166 gcc_cv_as="$DEFAULT_ASSEMBLER"
2167 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2168 && test -f ../gas/Makefile \
2169 && test x$build = x$host; then
2170 gcc_cv_as=../gas/as-new$build_exeext
2171 elif test -x as$build_exeext; then
2172 # Build using assembler in the current directory.
2173 gcc_cv_as=./as$build_exeext
2174 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2175 gcc_cv_as="$AS_FOR_TARGET"
2177 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2180 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2181 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2182 case "$ORIGINAL_AS_FOR_TARGET" in
2183 ./as | ./as$build_exeext) ;;
2184 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2187 AC_MSG_CHECKING(what assembler to use)
2188 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2189 # Single tree build which includes gas. We want to prefer it
2190 # over whatever linker top-level may have detected, since
2191 # we'll use what we're building after installation anyway.
2192 AC_MSG_RESULT(newly built gas)
2194 _gcc_COMPUTE_GAS_VERSION
2195 in_tree_gas_is_elf=no
2196 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2197 || (grep 'obj_format = multi' ../gas/Makefile \
2198 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2200 in_tree_gas_is_elf=yes
2203 AC_MSG_RESULT($gcc_cv_as)
2209 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2210 [case "${enableval}" in
2216 install_gold_as_default=no
2218 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2219 [case "${enableval}" in
2221 install_gold_as_default=yes
2224 if test x${default_ld} != x; then
2225 install_gold_as_default=yes
2231 AC_MSG_ERROR([invalid --enable-gold argument])
2235 # Identify the linker which will work hand-in-glove with the newly
2236 # built GCC, so that we can examine its features. This is the linker
2237 # which will be driven by the driver program.
2239 # If build != host, and we aren't building gas in-tree, we identify a
2240 # build->target linker and hope that it will have the same features
2241 # as the host->target linker we'll be using.
2242 gcc_cv_gld_major_version=
2243 gcc_cv_gld_minor_version=
2244 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2245 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2246 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2248 AS_VAR_SET_IF(gcc_cv_ld,, [
2249 if test -x "$DEFAULT_LINKER"; then
2250 gcc_cv_ld="$DEFAULT_LINKER"
2251 elif test $install_gold_as_default = yes \
2252 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2253 && test -f ../gold/Makefile \
2254 && test x$build = x$host; then
2255 gcc_cv_ld=../gold/ld-new$build_exeext
2256 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2257 && test -f ../ld/Makefile \
2258 && test x$build = x$host; then
2259 gcc_cv_ld=../ld/ld-new$build_exeext
2260 elif test -x collect-ld$build_exeext; then
2261 # Build using linker in the current directory.
2262 gcc_cv_ld=./collect-ld$build_exeext
2263 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2264 gcc_cv_ld="$LD_FOR_TARGET"
2266 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2269 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2270 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2271 # if the PLUGIN_LD is set ld-new, just have it as ld
2272 # as that is the installed named.
2273 if test x$PLUGIN_LD_SUFFIX = xld-new \
2274 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2277 AC_ARG_WITH(plugin-ld,
2278 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2279 [if test x"$withval" != x; then
2280 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2281 PLUGIN_LD_SUFFIX="$withval"
2283 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2284 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2286 # Check to see if we are using gold instead of ld
2287 AC_MSG_CHECKING(whether we are using gold)
2289 if test x$gcc_cv_ld != x; then
2290 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2291 | grep "GNU gold" > /dev/null; then
2295 AC_MSG_RESULT($ld_is_gold)
2297 AC_MSG_CHECKING(gold linker with split stack support as non default)
2298 # Check to see if default ld is not gold, but gold is
2299 # available and has support for split stack. If gcc was configured
2300 # with gold then no checking is done.
2302 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2304 # For platforms other than powerpc64*, enable as appropriate.
2307 ld_gold=`which ${gcc_cv_ld}.gold`
2308 # Make sure this gold has minimal split stack support
2309 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2310 ld_vers=`$ld_gold --version | sed 1q`
2311 gold_vers=`echo $ld_vers | sed -n \
2312 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2314 # check that the gold version contains the complete split stack support
2315 # on powerpc64 big and little endian
2317 case "$gold_vers" in
2318 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2320 *) gold_non_default=no
2326 if test $gold_non_default = yes; then
2327 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2328 [Define if the gold linker supports split stack and is available as a non-default])
2331 AC_MSG_RESULT($gold_non_default)
2333 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2334 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2335 case "$ORIGINAL_LD_FOR_TARGET" in
2336 ./collect-ld | ./collect-ld$build_exeext) ;;
2337 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2340 AC_MSG_CHECKING(what linker to use)
2341 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2342 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2343 # Single tree build which includes ld. We want to prefer it
2344 # over whatever linker top-level may have detected, since
2345 # we'll use what we're building after installation anyway.
2346 AC_MSG_RESULT(newly built ld)
2348 in_tree_ld_is_elf=no
2349 if (grep 'EMUL = .*elf' ../ld/Makefile \
2350 || grep 'EMUL = .*linux' ../ld/Makefile \
2351 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2352 in_tree_ld_is_elf=yes
2353 elif test "$ld_is_gold" = yes; then
2354 in_tree_ld_is_elf=yes
2356 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
2359 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2360 if test x$gcc_cv_gld_version != x; then
2364 case $gcc_cv_gld_version in
2367 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2370 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2371 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2373 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2374 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2376 AC_MSG_RESULT($gcc_cv_ld)
2378 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2379 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2380 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2383 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2384 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2386 # Figure out what nm we will be using.
2387 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2388 AS_VAR_SET_IF(gcc_cv_nm,, [
2389 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2390 && test -f ../binutils/Makefile \
2391 && test x$build = x$host; then
2392 gcc_cv_nm=../binutils/nm-new$build_exeext
2393 elif test -x nm$build_exeext; then
2394 gcc_cv_nm=./nm$build_exeext
2395 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2396 gcc_cv_nm="$NM_FOR_TARGET"
2398 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2401 AC_MSG_CHECKING(what nm to use)
2402 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2403 # Single tree build which includes binutils.
2404 AC_MSG_RESULT(newly built nm)
2407 AC_MSG_RESULT($gcc_cv_nm)
2411 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2412 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2413 case "$ORIGINAL_NM_FOR_TARGET" in
2414 ./nm | ./nm$build_exeext) ;;
2415 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2419 # Figure out what objdump we will be using.
2420 AS_VAR_SET_IF(gcc_cv_objdump,, [
2421 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2422 && test -f ../binutils/Makefile \
2423 && test x$build = x$host; then
2424 # Single tree build which includes binutils.
2425 gcc_cv_objdump=../binutils/objdump$build_exeext
2426 elif test -x objdump$build_exeext; then
2427 gcc_cv_objdump=./objdump$build_exeext
2428 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2429 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2431 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2434 AC_MSG_CHECKING(what objdump to use)
2435 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2436 # Single tree build which includes binutils.
2437 AC_MSG_RESULT(newly built objdump)
2438 elif test x$gcc_cv_objdump = x; then
2439 AC_MSG_RESULT(not found)
2441 AC_MSG_RESULT($gcc_cv_objdump)
2444 # Figure out what readelf we will be using.
2445 AS_VAR_SET_IF(gcc_cv_readelf,, [
2446 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2447 && test -f ../binutils/Makefile \
2448 && test x$build = x$host; then
2449 # Single tree build which includes binutils.
2450 gcc_cv_readelf=../binutils/readelf$build_exeext
2451 elif test -x readelf$build_exeext; then
2452 gcc_cv_readelf=./readelf$build_exeext
2453 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2454 gcc_cv_readelf="$READELF_FOR_TARGET"
2456 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2459 AC_MSG_CHECKING(what readelf to use)
2460 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2461 # Single tree build which includes binutils.
2462 AC_MSG_RESULT(newly built readelf)
2463 elif test x$gcc_cv_readelf = x; then
2464 AC_MSG_RESULT(not found)
2466 AC_MSG_RESULT($gcc_cv_readelf)
2469 # Figure out what assembler alignment features are present.
2470 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2474 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2475 [Define if your assembler supports .balign and .p2align.])])
2477 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2480 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2481 [Define if your assembler supports specifying the maximum number
2482 of bytes to skip when using the GAS .p2align command.])])
2484 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2487 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2488 [Define if your assembler supports .literal16.])])
2490 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2492 [conftest_label1: .word 0
2494 conftest_label2: .word 0
2496 [if test x$gcc_cv_nm != x; then
2497 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2498 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2499 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2501 else gcc_cv_as_subsection_m1=yes
2503 rm -f conftest.nm1 conftest.nm2
2505 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2506 [Define if your assembler supports .subsection and .subsection -1 starts
2507 emitting at the beginning of your section.])])
2509 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2512 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2514 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2516 [ .weakref foobar, barfnot],,
2517 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2519 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2522 .NSUBSPA $CODE$,COMDAT],,
2523 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2525 # .hidden needs to be supported in both the assembler and the linker,
2526 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2527 # This is irritatingly difficult to feature test for; we have to check the
2528 # date string after the version number. If we've got an in-tree
2529 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2531 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2534 conftest_s=' .globl foobar,hidden'
2537 conftest_s=' .hidden foobar
2541 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2542 [elf,2,13,0],, [$conftest_s])
2545 # Darwin as has some visibility support, though with a different syntax.
2546 gcc_cv_as_hidden=yes
2550 # gnu_indirect_function type is an extension proposed at
2551 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2552 # selection of function implementation
2553 AC_ARG_ENABLE(gnu-indirect-function,
2554 [AS_HELP_STRING([--enable-gnu-indirect-function],
2555 [enable the use of the @gnu_indirect_function to glibc systems])],
2556 [case $enable_gnu_indirect_function in
2558 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2559 Valid choices are 'yes' and 'no'.]) ;;
2561 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2563 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2564 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2565 [Define if your system supports gnu indirect functions.])
2569 if test $in_tree_ld != yes ; then
2570 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2571 if echo "$ld_ver" | grep GNU > /dev/null; then
2572 if test x"$ld_is_gold" = xyes; then
2573 # GNU gold --version looks like this:
2575 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2577 # We extract the binutils version which is more familiar and specific
2578 # than the gold version.
2579 ld_vers=`echo $ld_ver | sed -n \
2580 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2582 # GNU ld --version looks like this:
2584 # GNU ld (GNU Binutils) 2.21.51.20110225
2585 ld_vers=`echo $ld_ver | sed -n \
2586 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2588 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2589 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2590 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2591 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2595 # Solaris 2 ld -V output looks like this for a regular version:
2597 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2599 # but test versions add stuff at the end:
2601 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2603 # In Solaris 11.4, this was changed to
2605 # ld: Solaris ELF Utilities: 11.4-1.3123
2607 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2608 # numbers can be used in ld.so.1 feature checks even if a different
2609 # linker is configured.
2610 ld_ver=`$gcc_cv_ld -V 2>&1`
2611 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2612 ld_vers=`echo $ld_ver | sed -n \
2613 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2614 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2615 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2623 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2624 [[if test $in_tree_ld = yes ; then
2626 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2627 && test $in_tree_ld_is_elf = yes; then
2628 gcc_cv_ld_hidden=yes
2631 gcc_cv_ld_hidden=yes
2632 if test x"$ld_is_gold" = xyes; then
2634 elif echo "$ld_ver" | grep GNU > /dev/null; then
2636 mmix-knuth-mmixware)
2637 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2641 if test 0"$ld_date" -lt 20020404; then
2642 if test -n "$ld_date"; then
2643 # If there was date string, but was earlier than 2002-04-04, fail
2645 elif test -z "$ld_vers"; then
2646 # If there was no date string nor ld version number, something is wrong
2649 test -z "$ld_vers_patch" && ld_vers_patch=0
2650 if test "$ld_vers_major" -lt 2; then
2652 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2653 gcc_cv_ld_hidden="no"
2654 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2662 gcc_cv_ld_hidden=yes
2665 # Darwin ld has some visibility support.
2666 gcc_cv_ld_hidden=yes
2668 hppa64*-*-hpux* | ia64*-*-hpux*)
2669 gcc_cv_ld_hidden=yes
2671 *-*-solaris2.1[0-9]*)
2672 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2673 # .symbolic was only added in Solaris 9 12/02.
2674 gcc_cv_ld_hidden=yes
2682 libgcc_visibility=no
2683 AC_SUBST(libgcc_visibility)
2684 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2685 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2686 libgcc_visibility=yes
2687 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2688 [Define if your assembler and linker support .hidden.])
2691 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2692 gcc_cv_ld_ro_rw_mix=unknown
2693 if test $in_tree_ld = yes ; then
2694 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2695 && test $in_tree_ld_is_elf = yes; then
2696 gcc_cv_ld_ro_rw_mix=read-write
2698 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2699 echo '.section myfoosect, "a"' > conftest1.s
2700 echo '.section myfoosect, "aw"' > conftest2.s
2701 echo '.byte 1' >> conftest2.s
2702 echo '.section myfoosect, "a"' > conftest3.s
2703 echo '.byte 0' >> conftest3.s
2704 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2705 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2706 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2707 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2708 conftest2.o conftest3.o > /dev/null 2>&1; then
2709 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2710 | sed -e '/myfoosect/!d' -e N`
2711 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2712 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2713 gcc_cv_ld_ro_rw_mix=read-only
2715 gcc_cv_ld_ro_rw_mix=read-write
2720 rm -f conftest.* conftest[123].*
2723 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2724 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2725 [Define if your linker links a mix of read-only
2726 and read-write sections into a read-write section.])
2728 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2730 gcc_AC_INITFINI_ARRAY
2732 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2733 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2741 [[# GAS versions before 2.11 do not support uleb128,
2742 # despite appearing to.
2743 # ??? There exists an elf-specific test that will crash
2744 # the assembler. Perhaps it's better to figure out whether
2745 # arbitrary sections are supported and try the test.
2746 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2747 if echo "$as_ver" | grep GNU > /dev/null; then
2748 as_vers=`echo $as_ver | sed -n \
2749 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2750 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2751 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2752 if test $as_major -eq 2 && test $as_minor -lt 11
2754 else gcc_cv_as_leb128=yes
2757 [AC_DEFINE(HAVE_AS_LEB128, 1,
2758 [Define if your assembler supports .sleb128 and .uleb128.])],
2759 [AC_DEFINE(HAVE_AS_LEB128, 0,
2760 [Define if your assembler supports .sleb128 and .uleb128.])])
2762 # Determine if an .eh_frame section is read-only.
2763 gcc_fn_eh_frame_ro () {
2764 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2765 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2766 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2769 # Check if we have assembler support for unwind directives.
2770 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2777 .cfi_escape 1, 2, 3, 4, 5
2781 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2782 # read-only and read-write sections, we need to make sure that the
2783 # assembler used emits read-write .eh_frame sections.
2784 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2785 gcc_cv_as_cfi_directive=yes
2786 elif test "x$gcc_cv_objdump" = x; then
2787 # No objdump, err on the side of caution.
2788 gcc_cv_as_cfi_directive=no
2790 if test x$gas = xyes; then
2798 sparc*-*-solaris2.*)
2799 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2800 if gcc_fn_eh_frame_ro $as_32_opt \
2801 || gcc_fn_eh_frame_ro $as_64_opt; then
2802 gcc_cv_as_cfi_directive=no
2804 gcc_cv_as_cfi_directive=yes
2807 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2808 # On Solaris/x86, make sure that GCC and assembler agree on using
2809 # read-only .eh_frame sections for 64-bit.
2810 if gcc_fn_eh_frame_ro $as_32_opt; then
2811 gcc_cv_as_cfi_directive=no
2812 elif gcc_fn_eh_frame_ro $as_64_opt; then
2813 gcc_cv_as_cfi_directive=yes
2815 gcc_cv_as_cfi_directive=no
2822 gcc_cv_as_cfi_directive=yes
2825 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2826 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2830 .cfi_adjust_cfa_offset 64
2832 .cfi_adjust_cfa_offset 128
2835 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2836 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2837 gcc_cv_as_cfi_advance_working=yes
2841 # no objdump, err on the side of caution
2842 gcc_cv_as_cfi_advance_working=no
2844 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2845 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2846 [`if test $gcc_cv_as_cfi_directive = yes \
2847 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2848 [Define 0/1 if your assembler supports CFI directives.])
2850 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2851 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2852 gcc_cv_as_cfi_personality_directive, ,,
2855 .cfi_personality 0, symbol
2857 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2858 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2859 then echo 1; else echo 0; fi`],
2860 [Define 0/1 if your assembler supports .cfi_personality.])
2862 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2863 gcc_cv_as_cfi_sections_directive, ,,
2865 .cfi_sections .debug_frame, .eh_frame
2869 win32 | pe | cygwin* | mingw32*)
2870 # Need to check that we generated the correct relocation for the
2871 # .debug_frame section. This was fixed for binutils 2.21.
2872 gcc_cv_as_cfi_sections_directive=no
2873 if test "x$gcc_cv_objdump" != x; then
2874 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2875 grep secrel > /dev/null; then
2876 gcc_cv_as_cfi_sections_directive=yes
2881 gcc_cv_as_cfi_sections_directive=yes
2884 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2885 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2886 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2887 then echo 1; else echo 0; fi`],
2888 [Define 0/1 if your assembler supports .cfi_sections.])
2890 # GAS versions up to and including 2.11.0 may mis-optimize
2892 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2900 .section .eh_frame,"aw",@progbits
2902 .4byte .LECIE1-.LSCIE1
2916 .4byte .LEFDE1-.LASFDE1
2918 .4byte .LASFDE1-__FRAME_BEGIN__
2926 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2927 cat > conftest.lit <<EOF
2928 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2929 0010 01000000 12000000 18000000 00000000 ................
2930 0020 08000000 04080000 0044 .........D @&t@
2932 cat > conftest.big <<EOF
2933 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2934 0010 00000001 00000012 00000018 00000000 ................
2935 0020 00000008 04000000 0844 .........D @&t@
2937 # If the assembler didn't choke, and we can objdump,
2938 # and we got the correct data, then succeed.
2939 # The text in the here-document typically retains its unix-style line
2940 # endings, while the output of objdump will use host line endings.
2941 # Therefore, use diff -b for the comparisons.
2942 if test x$gcc_cv_objdump != x \
2943 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2944 | tail -3 > conftest.got \
2945 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2946 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2948 gcc_cv_as_eh_frame=yes
2949 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2950 gcc_cv_as_eh_frame=buggy
2952 # Uh oh, what do we do now?
2953 gcc_cv_as_eh_frame=no
2956 if test $gcc_cv_as_eh_frame = buggy; then
2957 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2958 [Define if your assembler mis-optimizes .eh_frame data.])
2961 # Test if the assembler supports the section flag 'e' or #exclude for
2962 # specifying an excluded section.
2963 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
2964 [2,22,51], [--fatal-warnings],
2967 if test $gcc_cv_as_section_exclude_e = no; then
2969 # Solaris as uses #exclude instead.
2973 conftest_s='.section "foo1", #exclude'
2975 i?86-*-solaris2* | x86_64-*-solaris2*)
2976 conftest_s='.section foo1, #exclude'
2981 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
2985 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
2986 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
2987 [Define if your assembler supports specifying the exclude section flag.])
2989 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2990 [elf,2,12,0], [--fatal-warnings],
2991 [.section .rodata.str, "aMS", @progbits, 1])
2992 if test $gcc_cv_as_shf_merge = no; then
2993 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2994 [elf,2,12,0], [--fatal-warnings],
2995 [.section .rodata.str, "aMS", %progbits, 1])
2998 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
2999 # SHF_MERGE support in Solaris 10/x86 ld is broken.
3000 if test x"$gnu_ld" = xno; then
3001 gcc_cv_as_shf_merge=no
3005 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3006 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3007 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3009 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3010 [.stabs "gcc2_compiled.",60,0,0,0],,
3011 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3012 [Define if your assembler supports .stabs.])])
3014 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3015 gcc_cv_as_comdat_group,
3016 [elf,2,16,0], [--fatal-warnings],
3017 [.section .text,"axG",@progbits,.foo,comdat])
3018 if test $gcc_cv_as_comdat_group = yes; then
3019 gcc_cv_as_comdat_group_percent=no
3020 gcc_cv_as_comdat_group_group=no
3022 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3023 gcc_cv_as_comdat_group_percent,
3024 [elf,2,16,0], [--fatal-warnings],
3025 [.section .text,"axG",%progbits,.foo,comdat])
3026 if test $gcc_cv_as_comdat_group_percent = yes; then
3027 gcc_cv_as_comdat_group_group=no
3030 # Sun as uses a completely different syntax.
3035 .group foo,".text%foo",#comdat
3036 .section ".text%foo", #alloc,#execinstr,#progbits
3041 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3043 .group foo,.text%foo,#comdat
3044 .section .text%foo, "ax", @progbits
3050 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3051 gcc_cv_as_comdat_group_group,
3055 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3056 gcc_cv_as_comdat_group_group=no
3060 if test x"$ld_is_gold" = xyes; then
3062 elif test $in_tree_ld = yes ; then
3064 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3065 && test $in_tree_ld_is_elf = yes; then
3068 elif echo "$ld_ver" | grep GNU > /dev/null; then
3070 if test 0"$ld_date" -lt 20050308; then
3071 if test -n "$ld_date"; then
3072 # If there was date string, but was earlier than 2005-03-08, fail
3074 elif test "$ld_vers_major" -lt 2; then
3076 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3083 *-*-solaris2.1[1-9]*)
3085 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3086 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3089 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3090 # least ld version 1.2267.
3091 if test "$ld_vers_major" -gt 1; then
3093 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3095 elif test "$ld_vers_minor" -ge 2267; then
3100 # Assume linkers other than GNU ld don't support COMDAT group.
3106 # Allow overriding the automatic COMDAT group tests above.
3107 AC_ARG_ENABLE(comdat,
3108 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3109 [comdat_group="$enable_comdat"])
3110 if test $comdat_group = no; then
3111 gcc_cv_as_comdat_group=no
3112 gcc_cv_as_comdat_group_percent=no
3113 gcc_cv_as_comdat_group_group=no
3115 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3116 [`if test $gcc_cv_as_comdat_group = yes \
3117 || test $gcc_cv_as_comdat_group_percent = yes \
3118 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3119 [Define 0/1 if your assembler and linker support COMDAT groups.])
3121 # Restrict this test to Solaris/x86: other targets define this statically.
3123 i?86-*-solaris2* | x86_64-*-solaris2*)
3124 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3125 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3129 # Full support for hidden thunks in linkonce sections only appeared in
3130 # Solaris 11/OpenSolaris.
3131 *-*-solaris2.1[[1-9]]*)
3139 AC_MSG_RESULT($hidden_linkonce)
3140 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3141 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3142 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3146 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3147 gcc_cv_as_discriminator,
3151 .loc 1 1 0 discriminator 1],,
3152 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3153 [Define if your assembler supports the .loc discriminator sub-directive.])])
3155 # Thread-local storage - the check is heavily parameterized.
3164 .section ".tdata","awT",@progbits
3167 ldq $27,__tls_get_addr($29) !literal!1
3168 lda $16,foo($29) !tlsgd!1
3169 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3170 ldq $27,__tls_get_addr($29) !literal!2
3171 lda $16,foo($29) !tlsldm!2
3172 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3173 ldq $1,foo($29) !gotdtprel
3174 ldah $2,foo($29) !dtprelhi
3175 lda $3,foo($2) !dtprello
3176 lda $4,foo($29) !dtprel
3177 ldq $1,foo($29) !gottprel
3178 ldah $2,foo($29) !tprelhi
3179 lda $3,foo($2) !tprello
3180 lda $4,foo($29) !tprel'
3183 tls_as_opt=--fatal-warnings
3187 add_s r0,r0, @foo@tpoff'
3191 cris-*-*|crisv32-*-*)
3193 .section ".tdata","awT",@progbits
3200 tls_as_opt=--fatal-warnings
3204 .section ".tdata","awT",@progbits
3216 .section ".tdata","awT",@progbits
3220 addil LT%foo-$tls_gdidx$,gp
3221 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3224 addil LT%foo-$tls_ldidx$,gp
3226 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3227 addil LR%foo-$tls_dtpoff$,%ret0
3228 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3230 addil LT%foo-$tls_ieoff$,gp
3231 ldw RT%foo-$tls_ieoff$(%r1),%t2
3234 addil LR%foo-$tls_leoff$,%t1
3235 ldo RR%foo-$tls_leoff$(%r1),%t2'
3238 tls_as_opt=--fatal-warnings
3242 .section ".tdata","awT",%progbits
3253 i[34567]86-*-* | x86_64-*-*)
3255 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3262 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3264 .section .tdata,"awt",@progbits'
3269 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3270 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3274 .section ".tdata","awT",@progbits'
3278 tls_as_opt="--fatal-warnings"
3282 conftest_s="$conftest_s
3286 leal foo@tlsgd(,%ebx,1), %eax
3287 leal foo@tlsldm(%ebx), %eax
3288 leal foo@dtpoff(%eax), %edx
3289 movl foo@gottpoff(%ebx), %eax
3290 subl foo@gottpoff(%ebx), %eax
3291 addl foo@gotntpoff(%ebx), %eax
3292 movl foo@indntpoff, %eax
3293 movl \$foo@tpoff, %eax
3294 subl \$foo@tpoff, %eax
3295 leal foo@ntpoff(%ecx), %eax"
3298 if test x$on_solaris = xyes; then
3300 yes) tls_as_opt="$tls_as_opt --64" ;;
3301 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3304 conftest_s="$conftest_s
3308 leaq foo@tlsgd(%rip), %rdi
3309 leaq foo@tlsld(%rip), %rdi
3310 leaq foo@dtpoff(%rax), %rdx
3311 movq foo@gottpoff(%rip), %rax
3312 movq \$foo@tpoff, %rax"
3318 .section ".tdata","awT",@progbits
3321 addl r16 = @ltoff(@dtpmod(foo#)), gp
3322 addl r17 = @ltoff(@dtprel(foo#)), gp
3323 addl r18 = @ltoff(@tprel(foo#)), gp
3324 addl r19 = @dtprel(foo#), gp
3325 adds r21 = @dtprel(foo#), r13
3326 movl r23 = @dtprel(foo#)
3327 addl r20 = @tprel(foo#), gp
3328 adds r22 = @tprel(foo#), r13
3329 movl r24 = @tprel(foo#)'
3332 tls_as_opt=--fatal-warnings
3336 .section .tdata,"awT",@progbits
3340 addik r5,r20,x@TLSGD
3341 addik r5,r20,x@TLSLDM'
3344 tls_as_opt='--fatal-warnings'
3348 .section .tdata,"awT",@progbits
3352 addiu $4, $28, %tlsgd(x)
3353 addiu $4, $28, %tlsldm(x)
3354 lui $4, %dtprel_hi(x)
3355 addiu $4, $4, %dtprel_lo(x)
3356 lw $4, %gottprel(x)($28)
3357 lui $4, %tprel_hi(x)
3358 addiu $4, $4, %tprel_lo(x)'
3361 tls_as_opt='-32 --fatal-warnings'
3365 .section .tdata,"awT",@progbits
3370 move.l x@TLSGD(%a5),%a0
3371 move.l x@TLSLDM(%a5),%a0
3372 move.l x@TLSLDO(%a5),%a0
3373 move.l x@TLSIE(%a5),%a0
3374 move.l x@TLSLE(%a5),%a0'
3377 tls_as_opt='--fatal-warnings'
3381 .section ".tdata","awT",@progbits'
3384 tls_as_opt="--fatal-warnings"
3388 .section ".tdata","awT",%progbits
3392 add x0, x0, #:tlsgd_lo12:x
3397 tls_as_opt='--fatal-warnings'
3401 .extern __get_tpointer
3419 .section ".tdata","awT",@progbits
3427 addi 3,2,ld0@got@tlsgd
3433 addi 3,2,x1@got@tlsld
3439 addis 9,3,x2@dtprel@ha
3440 addi 9,9,x2@dtprel@l
3443 ld 9,x3@got@dtprel(2)
3449 tls_as_opt="-a64 --fatal-warnings"
3453 .section ".tdata","awT",@progbits
3461 addi 3,31,ld0@got@tlsgd
3463 addi 3,31,x1@got@tlsld
3466 addis 9,3,x2@dtprel@ha
3467 addi 9,9,x2@dtprel@l
3468 lwz 9,x3@got@tprel(31)
3471 addis 9,2,x2@tprel@ha
3472 addi 9,9,x2@tprel@l'
3475 tls_as_opt="-a32 --fatal-warnings"
3479 .section .tdata,"awT",@progbits
3483 call __tls_get_addr'
3486 tls_as_opt='--fatal-warnings'
3490 .section ".tdata","awT",@progbits
3499 l %r1,foo@GOTNTPOFF(%r12)
3500 l %r1,0(%r1):tls_load:foo
3501 bas %r14,0(%r1,%r13):tls_gdcall:foo
3502 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3505 tls_as_opt="-m31 --fatal-warnings"
3509 .section ".tdata","awT",@progbits
3517 lg %r1,foo@GOTNTPOFF(%r12)
3518 larl %r1,foo@INDNTPOFF
3519 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3520 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3523 tls_as_opt="-m64 -Aesame --fatal-warnings"
3525 sh-*-* | sh[123456789lbe]*-*-*)
3527 .section ".tdata","awT",@progbits
3537 tls_as_opt=--fatal-warnings
3541 sparc*-sun-solaris2.*)
3548 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3550 .section ".tdata",#alloc,#write,#tls'
3555 .section ".tdata","awT",@progbits'
3558 tls_as_opt="-32 --fatal-warnings"
3560 conftest_s="$conftest_s
3563 sethi %tgd_hi22(foo), %o0
3564 add %o0, %tgd_lo10(foo), %o1
3565 add %l7, %o1, %o0, %tgd_add(foo)
3566 call __tls_get_addr, %tgd_call(foo)
3567 sethi %tldm_hi22(foo), %l1
3568 add %l1, %tldm_lo10(foo), %l2
3569 add %l7, %l2, %o0, %tldm_add(foo)
3570 call __tls_get_addr, %tldm_call(foo)
3571 sethi %tldo_hix22(foo), %l3
3572 xor %l3, %tldo_lox10(foo), %l4
3573 add %o0, %l4, %l5, %tldo_add(foo)
3574 sethi %tie_hi22(foo), %o3
3575 add %o3, %tie_lo10(foo), %o3
3576 ld [%l7 + %o3], %o2, %tie_ld(foo)
3577 add %g7, %o2, %o4, %tie_add(foo)
3578 sethi %tle_hix22(foo), %l1
3579 xor %l1, %tle_lox10(foo), %o5
3580 ld [%g7 + %o5], %o1"
3584 .section ".tdata","awT",@progbits
3587 addli r0, zero, tls_gd(foo)
3588 auli r0, zero, tls_gd_ha16(foo)
3589 addli r0, r0, tls_gd_lo16(foo)
3591 addli r0, zero, tls_ie(foo)
3592 auli r0, r0, tls_ie_ha16(foo)
3593 addli r0, r0, tls_ie_lo16(foo)'
3596 tls_as_opt="--fatal-warnings"
3600 .section ".tdata","awT",@progbits
3603 shl16insli r0, zero, hw0_last_tls_gd(foo)
3604 shl16insli r0, zero, hw1_last_tls_gd(foo)
3605 shl16insli r0, r0, hw0_tls_gd(foo)
3607 shl16insli r0, zero, hw1_last_tls_ie(foo)
3608 shl16insli r0, r0, hw0_tls_ie(foo)'
3611 tls_as_opt="--fatal-warnings"
3615 .section ".tdata","awT",@progbits
3618 movi a8, foo@TLSFUNC
3619 movi a10, foo@TLSARG
3620 callx8.tls a8, foo@TLSCALL'
3627 if test "x$enable_tls" = xno ; then
3628 : # TLS explicitly disabled.
3629 elif test "x$enable_tls" = xyes ; then
3630 set_have_as_tls=yes # TLS explicitly enabled.
3631 elif test -z "$tls_first_major"; then
3632 : # If we don't have a check, assume no support.
3634 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3635 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3636 [set_have_as_tls=yes])
3638 if test $set_have_as_tls = yes ; then
3639 AC_DEFINE(HAVE_AS_TLS, 1,
3640 [Define if your assembler and linker support thread-local storage.])
3643 # Target-specific assembler checks.
3645 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3646 gcc_cv_ld_static_dynamic=no
3647 gcc_cv_ld_static_option='-Bstatic'
3648 gcc_cv_ld_dynamic_option='-Bdynamic'
3649 if test $in_tree_ld = yes ; then
3650 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3651 gcc_cv_ld_static_dynamic=yes
3653 elif test x$gcc_cv_ld != x; then
3654 # Check if linker supports -Bstatic/-Bdynamic option
3655 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3656 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3657 gcc_cv_ld_static_dynamic=yes
3660 # AIX ld uses -b flags
3661 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3662 gcc_cv_ld_static_dynamic=yes
3663 gcc_cv_ld_static_option="-bstatic"
3664 gcc_cv_ld_dynamic_option="-bdynamic"
3666 # HP-UX ld uses -a flags to select between shared and archive.
3668 if test x"$gnu_ld" = xno; then
3669 gcc_cv_ld_static_dynamic=yes
3670 gcc_cv_ld_static_option="-aarchive_shared"
3671 gcc_cv_ld_dynamic_option="-adefault"
3674 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3676 gcc_cv_ld_static_dynamic=yes
3681 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3682 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3683 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3684 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3685 [Define to the linker option to disable use of shared objects.])
3686 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3687 [Define to the linker option to enable use of shared objects.])
3689 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3691 AC_MSG_CHECKING(linker --version-script option)
3692 gcc_cv_ld_version_script=no
3693 ld_version_script_option=''
3694 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3695 gcc_cv_ld_version_script=yes
3696 ld_version_script_option='--version-script'
3697 elif test x$gcc_cv_ld != x; then
3699 # Solaris 2 ld always supports -M. It also supports a subset of
3700 # --version-script since Solaris 11.4, but requires
3701 # -z gnu-version-script-compat to activate.
3703 gcc_cv_ld_version_script=yes
3704 ld_version_script_option='-M'
3708 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3709 AC_MSG_RESULT($gcc_cv_ld_version_script)
3710 AC_SUBST(ld_version_script_option)
3712 AC_MSG_CHECKING(linker soname option)
3714 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3715 gcc_cv_ld_soname=yes
3716 ld_soname_option='-soname'
3717 elif test x$gcc_cv_ld != x; then
3720 gcc_cv_ld_soname=yes
3721 ld_soname_option='-install_name'
3723 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3724 # ld compatiblity since some Solaris 10 update.
3726 gcc_cv_ld_soname=yes
3727 ld_soname_option='-h'
3731 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3732 AC_MSG_RESULT($gcc_cv_ld_soname)
3733 AC_SUBST(ld_soname_option)
3735 if test x"$demangler_in_ld" = xyes; then
3736 AC_MSG_CHECKING(linker --demangle support)
3737 gcc_cv_ld_demangle=no
3738 if test $in_tree_ld = yes; then
3739 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3740 gcc_cv_ld_demangle=yes
3742 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3743 # Check if the GNU linker supports --demangle option
3744 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3745 gcc_cv_ld_demangle=yes
3748 if test x"$gcc_cv_ld_demangle" = xyes; then
3749 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3750 [Define if your linker supports --demangle option.])
3752 AC_MSG_RESULT($gcc_cv_ld_demangle)
3755 AC_MSG_CHECKING(linker plugin support)
3757 if test -f liblto_plugin.la; then
3758 save_ld_ver="$ld_ver"
3759 save_ld_vers_major="$ld_vers_major"
3760 save_ld_vers_minor="$ld_vers_minor"
3761 save_ld_is_gold="$ld_is_gold"
3765 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3767 # FIXME: ld_is_gold?
3768 ld_vers_major="$gcc_cv_gld_major_version"
3769 ld_vers_minor="$gcc_cv_gld_minor_version"
3771 # Determine plugin linker version.
3772 # FIXME: Partial duplicate from above, generalize.
3774 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3775 if echo "$ld_ver" | grep GNU > /dev/null; then
3776 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3778 ld_vers=`echo $ld_ver | sed -n \
3779 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3781 ld_vers=`echo $ld_ver | sed -n \
3782 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3784 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3785 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3790 # Determine plugin support.
3791 if echo "$ld_ver" | grep GNU > /dev/null; then
3792 # Require GNU ld or gold 2.21+ for plugin support by default.
3793 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3795 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3796 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3801 ld_ver="$save_ld_ver"
3802 ld_vers_major="$save_ld_vers_major"
3803 ld_vers_minor="$save_ld_vers_minor"
3804 ld_is_gold="$save_ld_is_gold"
3806 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3807 [Define to the level of your linker's plugin support.])
3808 AC_MSG_RESULT($gcc_cv_lto_plugin)
3810 # Target OS-specific assembler checks.
3812 case "$target_os" in
3814 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3815 gcc_cv_as_mmacosx_version_min,,
3816 [-mmacosx-version-min=10.1], [.text],,
3817 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3818 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3822 # Target CPU-specific assembler checks.
3826 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3827 [-mabi=lp64], [.text],,,)
3828 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3829 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3830 [Define if your assembler supports the -mabi option.])
3832 if test x$with_abi = xilp32; then
3833 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3834 Upgrade the Assembler.])
3836 if test x"$with_multilib_list" = xdefault; then
3837 TM_MULTILIB_CONFIG=lp64
3839 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3840 for aarch64_multilib in ${aarch64_multilibs}; do
3841 case ${aarch64_multilib} in
3843 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3844 Upgrade the Assembler.])
3852 # Check if we have binutils support for relocations types needed by -fpic
3853 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3856 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3857 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3858 [Define if your assembler supports relocs needed by -fpic.])])
3859 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3860 AC_ARG_ENABLE(fix-cortex-a53-835769,
3862 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3863 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3864 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3865 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3870 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3875 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3876 Valid choices are 'yes' and 'no'.])
3882 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3883 AC_ARG_ENABLE(fix-cortex-a53-843419,
3885 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3886 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3887 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3888 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3893 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3898 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3899 Valid choices are 'yes' and 'no'.])
3907 # All TARGET_ABI_OSF targets.
3908 alpha*-*-linux* | alpha*-*-*bsd*)
3909 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3910 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3913 extbl $3, $2, $3 !lituse_bytoff!1
3914 ldq $2, a($29) !literal!1
3915 ldq $4, b($29) !literal!2
3916 ldq_u $3, 0($2) !lituse_base!1
3917 ldq $27, f($29) !literal!5
3918 jsr $26, ($27), f !lituse_jsr!5
3919 ldah $29, 0($26) !gpdisp!3
3920 lda $0, c($29) !gprel
3921 ldah $1, d($29) !gprelhigh
3922 lda $1, d($1) !gprellow
3923 lda $29, 0($29) !gpdisp!3],,
3924 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3925 [Define if your assembler supports explicit relocations.])])
3926 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3927 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3930 ldq $27, a($29) !literal!1
3931 jsr $26, ($27), a !lituse_jsrdirect!1],,
3932 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3933 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3937 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3938 [--mlink-relax], [.text],,
3939 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3940 [Define if your avr assembler supports --mlink-relax option.])])
3942 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3944 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3945 [Define if your avr assembler supports -mrmw option.])])
3947 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3948 gcc_cv_as_avr_mgccisr,,
3954 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3955 [Define if your avr assembler supports -mgcc-isr option.])])
3957 # Check how default linker description file implements .rodata for
3958 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3959 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3960 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3961 cat > conftest.s <<EOF
3962 .section .rodata,"a",@progbits
3964 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3969 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3970 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3971 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3972 if test -s conftest.nm
3974 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3976 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3977 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3979 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3980 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3981 cat conftest.nm >&AS_MESSAGE_LOG_FD
3982 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3983 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3986 AC_MSG_RESULT(test failed)
3987 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
3988 cat conftest.s >&AS_MESSAGE_LOG_FD
3989 AC_MSG_WARN([[see `config.log' for details]])
3991 rm -f conftest.s conftest.o conftest.elf conftest.nm
3995 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3996 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3997 [-no-mul-bug-abort], [.text],,
3998 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3999 [Define if your assembler supports the -no-mul-bug-abort option.])])
4003 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
4004 [.register %g2, #scratch],,
4005 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
4006 [Define if your assembler supports .register.])])
4008 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4010 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4011 [Define if your assembler supports -relax option.])])
4013 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4014 gcc_cv_as_sparc_gotdata_op,,
4021 sethi %gdop_hix22(foo), %g1
4022 xor %g1, %gdop_lox10(foo), %g1
4023 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4024 [if test x$gcc_cv_ld != x \
4025 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4026 if test x$gcc_cv_objdump != x; then
4027 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4028 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4029 gcc_cv_as_sparc_gotdata_op=no
4031 gcc_cv_as_sparc_gotdata_op=yes
4036 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4037 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4039 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4040 gcc_cv_as_sparc_ua_pcrel,,
4048 .uaword %r_disp32(foo)],
4049 [if test x$gcc_cv_ld != x \
4050 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4051 gcc_cv_as_sparc_ua_pcrel=yes
4054 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4055 [Define if your assembler and linker support unaligned PC relative relocs.])
4057 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4058 gcc_cv_as_sparc_ua_pcrel_hidden,,
4063 .uaword %r_disp32(foo)
4064 .byte 0x32, 0x33, 0x34
4069 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4070 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4071 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4072 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4073 if $gcc_cv_objdump -R conftest 2> /dev/null \
4074 | grep 'DISP32' > /dev/null 2>&1; then
4077 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4081 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4082 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4083 ]) # unaligned pcrel relocs
4085 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4086 gcc_cv_as_sparc_offsetable_lo10,,
4089 or %g1, %lo(ab) + 12, %g1
4090 or %g1, %lo(ab + 12), %g1],
4091 [if test x$gcc_cv_objdump != x \
4092 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4093 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4094 gcc_cv_as_sparc_offsetable_lo10=yes
4096 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4097 [Define if your assembler supports offsetable %lo().])])
4099 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4100 gcc_cv_as_sparc_fmaf,,
4103 .register %g2, #scratch
4104 .register %g3, #scratch
4106 fmaddd %f0, %f2, %f4, %f6
4107 addxccc %g1, %g2, %g3
4108 fsrl32 %f2, %f4, %f8
4109 fnaddd %f10, %f12, %f14],,
4110 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4111 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4113 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4114 gcc_cv_as_sparc_sparc4,,
4117 .register %g2, #scratch
4118 .register %g3, #scratch
4121 1: cwbneg %g2, %g3, 1f
4124 aes_kexpand0 %f4, %f6, %f8
4125 des_round %f38, %f40, %f42, %f44
4126 camellia_f %f54, %f56, %f58, %f60
4127 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4128 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4129 [Define if your assembler supports SPARC4 instructions.])])
4131 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4132 gcc_cv_as_sparc_sparc5,,
4135 .register %g2, #scratch
4136 .register %g3, #scratch
4139 fpadd8 %f0, %f2, %f4],,
4140 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4141 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4143 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4144 gcc_cv_as_sparc_sparc6,,
4147 .register %g2, #scratch
4148 .register %g3, #scratch
4151 fpsll64x %f0, %f2, %f4],,
4152 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4153 [Define if your assembler supports SPARC6 instructions.])])
4155 gcc_GAS_CHECK_FEATURE([LEON instructions],
4156 gcc_cv_as_sparc_leon,,
4159 .register %g2, #scratch
4160 .register %g3, #scratch
4164 casa [[%g2]] 0xb, %g3, %g1],,
4165 [AC_DEFINE(HAVE_AS_LEON, 1,
4166 [Define if your assembler supports LEON instructions.])])
4170 i[34567]86-*-* | x86_64-*-*)
4174 # Full C++ conformance when using a shared libstdc++-v3 requires some
4175 # support from the Cygwin DLL, which in more recent versions exports
4176 # wrappers to aid in interposing and redirecting operators new, delete,
4177 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4178 # are configuring for a version of Cygwin that exports the wrappers.
4179 if test x$host = x$target && test x$host_cpu = xi686; then
4180 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4182 # Can't check presence of libc functions during cross-compile, so
4183 # we just have to assume we're building for an up-to-date target.
4184 gcc_ac_cygwin_dll_wrappers=yes
4186 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4187 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4188 [Define if you want to generate code by default that assumes that the
4189 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4192 cygwin* | pe | mingw32*)
4193 # Recent binutils allows the three-operand form of ".comm" on PE. This
4194 # definition is used unconditionally to initialise the default state of
4195 # the target option variable that governs usage of the feature.
4196 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4197 [2,19,52],,[.comm foo,1,32])
4198 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4199 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4200 [Define if your assembler supports specifying the alignment
4201 of objects allocated using the GAS .comm command.])
4202 # Used for DWARF 2 in PE
4203 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4204 gcc_cv_as_ix86_pe_secrel32,
4210 [if test x$gcc_cv_ld != x \
4211 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4212 gcc_cv_as_ix86_pe_secrel32=yes
4215 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4216 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4217 # Test if the assembler supports the extended form of the .section
4218 # directive that specifies section alignment. LTO support uses this,
4219 # but normally only after installation, so we warn but don't fail the
4220 # configure if LTO is enabled but the assembler does not support it.
4221 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4222 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4223 if test x$gcc_cv_as_section_has_align != xyes; then
4224 case ",$enable_languages," in
4226 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4233 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4234 [-xbrace_comment=no], [.text],,
4235 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4236 [Define if your assembler supports -xbrace_comment option.])])
4238 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4239 gcc_cv_as_ix86_filds,,,
4240 [filds (%ebp); fists (%ebp)],,
4241 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4242 [Define if your assembler uses filds and fists mnemonics.])])
4244 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4245 gcc_cv_as_ix86_fildq,,,
4246 [fildq (%ebp); fistpq (%ebp)],,
4247 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4248 [Define if your assembler uses fildq and fistq mnemonics.])])
4250 gcc_GAS_CHECK_FEATURE([cmov syntax],
4251 gcc_cv_as_ix86_cmov_sun_syntax,,,
4252 [cmovl.l %edx, %eax],,
4253 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4254 [Define if your assembler supports the Sun syntax for cmov.])])
4256 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4257 gcc_cv_as_ix86_ffreep,,,
4259 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4260 [Define if your assembler supports the ffreep mnemonic.])])
4262 gcc_GAS_CHECK_FEATURE([.quad directive],
4263 gcc_cv_as_ix86_quad,,,
4265 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4266 [Define if your assembler supports the .quad directive.])])
4268 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4269 gcc_cv_as_ix86_sahf,,,
4272 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4273 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4275 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4276 gcc_cv_as_ix86_interunit_movq,,,
4280 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4281 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4282 [Define if your assembler supports interunit movq mnemonic.])
4284 gcc_GAS_CHECK_FEATURE([hle prefixes],
4285 gcc_cv_as_ix86_hle,,,
4286 [lock xacquire cmpxchg %esi, (%ecx)],,
4287 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4288 [Define if your assembler supports HLE prefixes.])])
4290 gcc_GAS_CHECK_FEATURE([swap suffix],
4291 gcc_cv_as_ix86_swap,,,
4292 [movl.s %esp, %ebp],,
4293 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4294 [Define if your assembler supports the swap suffix.])])
4296 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4297 gcc_cv_as_ix86_diff_sect_delta,,,
4305 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4306 [Define if your assembler supports the subtraction of symbols in different sections.])])
4308 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4309 gcc_cv_as_ix86_rep_lock_prefix,,,
4315 lock addl %edi, (%eax,%esi)
4316 lock orl $0, (%esp)],,
4317 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4318 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4320 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4321 gcc_cv_as_ix86_ud2,,,
4323 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4324 [Define if your assembler supports the 'ud2' mnemonic.])])
4326 # Enforce 32-bit output with gas and gld.
4327 if test x$gas = xyes; then
4328 as_ix86_gas_32_opt="--32"
4330 if echo "$ld_ver" | grep GNU > /dev/null; then
4331 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4332 ld_ix86_gld_32_opt="-melf_i386_sol2"
4334 ld_ix86_gld_32_opt="-melf_i386"
4338 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4339 gcc_cv_as_ix86_tlsgdplt,,
4340 [$as_ix86_gas_32_opt],
4341 [call tls_gd@tlsgdplt],
4342 [if test x$gcc_cv_ld != x \
4343 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4344 gcc_cv_as_ix86_tlsgdplt=yes
4347 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4348 [Define if your assembler and linker support @tlsgdplt.])])
4351 .section .tdata,"aw'$tls_section_flag'",@progbits
4353 .section .text,"ax",@progbits
4354 call tls_ld@tlsldmplt'
4356 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4357 gcc_cv_as_ix86_tlsldmplt,,
4358 [$as_ix86_gas_32_opt],
4360 [if test x$gcc_cv_ld != x \
4361 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4362 gcc_cv_as_ix86_tlsldmplt=yes
4365 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4366 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4367 [Define to 1 if your assembler and linker support @tlsldmplt.])
4370 .section .text,"ax",@progbits
4372 .type _start, @function
4374 leal value@tlsldm(%ebx), %eax
4375 call ___tls_get_addr@plt
4377 .section .tdata,"aw'$tls_section_flag'",@progbits
4378 .type value, @object
4380 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4381 gcc_cv_as_ix86_tlsldm,,
4382 [$as_ix86_gas_32_opt],
4384 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4385 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4386 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4387 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4388 gcc_cv_as_ix86_tlsldm=yes
4392 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4393 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4394 [Define to 1 if your assembler and linker support @tlsldm.])
4405 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4406 gcc_cv_as_ix86_got32x,,
4407 [$as_ix86_gas_32_opt],
4409 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4410 && test x$gcc_cv_readelf != x \
4411 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4412 | grep R_386_GOT32X > /dev/null 2>&1 \
4413 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4414 if $gcc_cv_objdump -dw conftest 2>&1 \
4415 | grep 0xffffff > /dev/null 2>&1; then
4416 gcc_cv_as_ix86_got32x=no
4418 gcc_cv_as_ix86_got32x=yes
4422 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4423 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4424 [Define 0/1 if your assembler and linker support @GOT.])
4426 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4427 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4428 [$as_ix86_gas_32_opt],
4434 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4435 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4436 [Define true if the assembler supports '.long foo@GOTOFF'.])
4439 .section .text,"ax",@progbits
4441 .type _start, @function
4443 leal ld@tlsldm(%ecx), %eax
4444 call *___tls_get_addr@GOT(%ecx)
4445 leal gd@tlsgd(%ecx), %eax
4446 call *___tls_get_addr@GOT(%ecx)
4448 .section .tdata,"aw'$tls_section_flag'",@progbits
4456 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4457 gcc_cv_as_ix86_tls_get_addr_via_got,,
4458 [$as_ix86_gas_32_opt],
4460 [if test x$gcc_cv_ld != x \
4461 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4462 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4465 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4466 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4467 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4471 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4472 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4474 addl r15 = @ltoffx(x#), gp
4476 ld8.mov r16 = [[r15]], x#],,
4477 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4478 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4486 gcc_GAS_CHECK_FEATURE([.machine directive support],
4487 gcc_cv_as_machine_directive,,,
4488 [ .machine ppc7400])
4489 if test x$gcc_cv_as_machine_directive != xyes; then
4490 echo "*** This target requires an assembler supporting \".machine\"" >&2
4491 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4492 test x$build = x$target && exit 1
4498 *-*-aix*) conftest_s=' .machine "pwr5"
4501 *-*-darwin*) conftest_s=' .text
4503 *) conftest_s=' .machine power4
4508 gcc_GAS_CHECK_FEATURE([mfcr field support],
4509 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4511 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4512 [Define if your assembler supports mfcr field.])])
4515 *-*-aix*) conftest_s=' .machine "pwr5"
4518 *) conftest_s=' .machine power5
4523 gcc_GAS_CHECK_FEATURE([popcntb support],
4524 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4526 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4527 [Define if your assembler supports popcntb field.])])
4530 *-*-aix*) conftest_s=' .machine "pwr5x"
4533 *) conftest_s=' .machine power5
4538 gcc_GAS_CHECK_FEATURE([fp round support],
4539 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4541 [AC_DEFINE(HAVE_AS_FPRND, 1,
4542 [Define if your assembler supports fprnd.])])
4545 *-*-aix*) conftest_s=' .machine "pwr6"
4548 *) conftest_s=' .machine power6
4553 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4554 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4556 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4557 [Define if your assembler supports mffgpr and mftgpr.])])
4560 *-*-aix*) conftest_s=' .csect .text[[PR]]
4562 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4566 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4567 *) conftest_s=' .text
4569 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4572 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4573 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4575 [AC_DEFINE(HAVE_AS_REL16, 1,
4576 [Define if your assembler supports R_PPC_REL16 relocs.])])
4579 *-*-aix*) conftest_s=' .machine "pwr6"
4582 *) conftest_s=' .machine power6
4587 gcc_GAS_CHECK_FEATURE([compare bytes support],
4588 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4590 [AC_DEFINE(HAVE_AS_CMPB, 1,
4591 [Define if your assembler supports cmpb.])])
4594 *-*-aix*) conftest_s=' .machine "pwr6"
4597 *) conftest_s=' .machine power6
4602 gcc_GAS_CHECK_FEATURE([decimal float support],
4603 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4605 [AC_DEFINE(HAVE_AS_DFP, 1,
4606 [Define if your assembler supports DFP instructions.])])
4609 *-*-aix*) conftest_s=' .machine "pwr7"
4612 *) conftest_s=' .machine power7
4617 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4618 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4620 [AC_DEFINE(HAVE_AS_VSX, 1,
4621 [Define if your assembler supports VSX instructions.])])
4624 *-*-aix*) conftest_s=' .machine "pwr7"
4627 *) conftest_s=' .machine power7
4632 gcc_GAS_CHECK_FEATURE([popcntd support],
4633 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4635 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4636 [Define if your assembler supports POPCNTD instructions.])])
4639 *-*-aix*) conftest_s=' .machine "pwr8"
4640 .csect .text[[PR]]';;
4641 *) conftest_s=' .machine power8
4645 gcc_GAS_CHECK_FEATURE([power8 support],
4646 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4648 [AC_DEFINE(HAVE_AS_POWER8, 1,
4649 [Define if your assembler supports POWER8 instructions.])])
4652 *-*-aix*) conftest_s=' .machine "pwr9"
4653 .csect .text[[PR]]';;
4654 *) conftest_s=' .machine power9
4658 gcc_GAS_CHECK_FEATURE([power9 support],
4659 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4661 [AC_DEFINE(HAVE_AS_POWER9, 1,
4662 [Define if your assembler supports POWER9 instructions.])])
4665 *-*-aix*) conftest_s=' .csect .text[[PR]]
4667 *) conftest_s=' .text
4671 gcc_GAS_CHECK_FEATURE([lwsync support],
4672 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4674 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4675 [Define if your assembler supports LWSYNC instructions.])])
4678 *-*-aix*) conftest_s=' .machine "476"
4681 *) conftest_s=' .machine "476"
4686 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4687 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4689 [AC_DEFINE(HAVE_AS_DCI, 1,
4690 [Define if your assembler supports the DCI/ICI instructions.])])
4692 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4693 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4694 [.gnu_attribute 4,1],,
4695 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4696 [Define if your assembler supports .gnu_attribute.])])
4698 gcc_GAS_CHECK_FEATURE([tls marker support],
4699 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4700 [ bl __tls_get_addr(x@tlsgd)],,
4701 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4702 [Define if your assembler supports arg info for __tls_get_addr.])])
4704 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4705 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4706 [ .reloc .,R_PPC64_ENTRY; nop],,
4707 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4708 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4712 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4713 gcc_cv_as_aix_ref, [2,21,0],,
4714 [ .csect stuff[[rw]]
4720 [AC_DEFINE(HAVE_AS_REF, 1,
4721 [Define if your assembler supports .ref])])
4723 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4724 gcc_cv_as_aix_dwloc, [2,21,0],,
4729 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4730 [Define if your assembler supports AIX debug frame section label reference.])])
4736 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4737 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4738 [ lw $4,%gp_rel(foo)($4)],,
4739 [if test x$target_cpu_default = x
4740 then target_cpu_default=MASK_EXPLICIT_RELOCS
4741 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4744 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4745 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4746 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4747 [Define if the assembler understands -mno-shared.])])
4749 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4750 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4751 [.gnu_attribute 4,1],,
4752 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4753 [Define if your assembler supports .gnu_attribute.])])
4755 gcc_GAS_CHECK_FEATURE([.module support],
4756 gcc_cv_as_mips_dot_module,,[-32],
4759 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4760 [Define if your assembler supports .module.])])
4761 if test x$gcc_cv_as_mips_dot_module = xno \
4762 && test x$with_fp_32 != x; then
4764 [Requesting --with-fp-32= requires assembler support for .module.])
4767 gcc_GAS_CHECK_FEATURE([.micromips support],
4768 gcc_cv_as_micromips_support,,[--fatal-warnings],
4770 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4771 [Define if your assembler supports the .set micromips directive])])
4773 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4774 gcc_cv_as_mips_dtprelword, [2,18,0],,
4775 [.section .tdata,"awT",@progbits
4779 .dtprelword x+0x8000],,
4780 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4781 [Define if your assembler supports .dtprelword.])])
4783 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4784 gcc_cv_as_mips_dspr1_mult,,,
4794 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4795 [Define if your assembler supports DSPR1 mult.])])
4797 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4798 gcc_cv_as_ld_jalr_reloc=no
4799 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4800 if test $in_tree_ld = yes ; then
4801 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4802 && test $in_tree_ld_is_elf = yes; then
4803 gcc_cv_as_ld_jalr_reloc=yes
4805 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4806 echo ' .ent x' > conftest.s
4807 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4808 echo ' lw $25,%call16(y)($28)' >> conftest.s
4809 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4810 echo '1: jalr $25' >> conftest.s
4811 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4812 echo '1: jalr $25' >> conftest.s
4813 echo ' .end x' >> conftest.s
4814 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4815 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4816 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4817 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4818 gcc_cv_as_ld_jalr_reloc=yes
4824 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4825 if test x$target_cpu_default = x; then
4826 target_cpu_default=MASK_RELAX_PIC_CALLS
4828 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4831 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4833 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4834 [gcc_cv_ld_mips_personality_relaxation],
4835 [gcc_cv_ld_mips_personality_relaxation=no
4836 if test $in_tree_ld = yes ; then
4837 if test "$gcc_cv_gld_major_version" -eq 2 \
4838 -a "$gcc_cv_gld_minor_version" -ge 21 \
4839 -o "$gcc_cv_gld_major_version" -gt 2; then
4840 gcc_cv_ld_mips_personality_relaxation=yes
4842 elif test x$gcc_cv_as != x \
4843 -a x$gcc_cv_ld != x \
4844 -a x$gcc_cv_readelf != x ; then
4845 cat > conftest.s <<EOF
4847 .cfi_personality 0x80,indirect_ptr
4854 .section .data,"aw",@progbits
4858 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4859 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4860 if $gcc_cv_readelf -d conftest 2>&1 \
4861 | grep TEXTREL > /dev/null 2>&1; then
4863 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4864 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4867 gcc_cv_ld_mips_personality_relaxation=yes
4871 rm -f conftest.s conftest.o conftest])
4872 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4873 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4874 [Define if your linker can relax absolute .eh_frame personality
4875 pointers into PC-relative form.])
4878 gcc_GAS_CHECK_FEATURE([-mnan= support],
4879 gcc_cv_as_mips_nan,,
4881 [AC_DEFINE(HAVE_AS_NAN, 1,
4882 [Define if the assembler understands -mnan=.])])
4883 if test x$gcc_cv_as_mips_nan = xno \
4884 && test x$with_nan != x; then
4886 [Requesting --with-nan= requires assembler support for -mnan=])
4890 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4891 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4892 [.gnu_attribute 8,1],,
4893 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4894 [Define if your assembler supports .gnu_attribute.])])
4895 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4896 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4901 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4902 [Define if your assembler supports .machine and .machinemode.])])
4903 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4904 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4905 [ .machine z13+vx ],,
4906 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4907 [Define if your assembler supports architecture modifiers.])])
4911 # Mips and HP-UX need the GNU assembler.
4912 # Linux on IA64 might be able to use the Intel assembler.
4915 mips*-*-* | *-*-hpux* )
4916 if test x$gas_flag = xyes \
4917 || test x"$host" != x"$build" \
4918 || test ! -x "$gcc_cv_as" \
4919 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4922 echo "*** This configuration requires the GNU assembler" >&2
4928 # ??? Not all targets support dwarf2 debug_line, even within a version
4929 # of gas. Moreover, we need to emit a valid instruction to trigger any
4930 # info to the output file. So, as supported targets are added to gas 2.11,
4931 # add some instruction here to (also) show we expect this might work.
4932 # ??? Once 2.11 is released, probably need to add first known working
4933 # version to the per-target configury.
4935 aarch64 | alpha | arc | arm | avr | bfin | cris | i386 | m32c | m68k \
4936 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4937 | tilegx | tilepro | visium | xstormy16 | xtensa)
4947 if test x"$insn" != x; then
4949 .file 1 \"conftest.s\"
4952 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4953 gcc_cv_as_dwarf2_debug_line,
4954 [elf,2,11,0],, [$conftest_s],
4955 [if test x$gcc_cv_objdump != x \
4956 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4957 | grep debug_line > /dev/null 2>&1; then
4958 gcc_cv_as_dwarf2_debug_line=yes
4961 # The .debug_line file table must be in the exact order that
4962 # we specified the files, since these indices are also used
4963 # by DW_AT_decl_file. Approximate this test by testing if
4964 # the assembler bitches if the same index is assigned twice.
4965 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4966 gcc_cv_as_dwarf2_file_buggy,,,
4970 if test $gcc_cv_as_dwarf2_debug_line = yes \
4971 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4972 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4973 [Define if your assembler supports dwarf2 .file/.loc directives,
4974 and preserves file table indices exactly as given.])
4976 if test $gcc_cv_as_leb128 = yes; then
4978 .file 1 \"conftest.s\"
4979 .loc 1 3 0 view .LVU1
4985 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4986 gcc_cv_as_dwarf2_debug_view,
4987 [elf,2,27,0],,[$conftest_s],,
4988 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4989 [Define if your assembler supports views in dwarf2 .loc directives.])])
4993 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4994 gcc_cv_as_gdwarf2_flag,
4995 [elf,2,11,0], [--gdwarf2], [$insn],,
4996 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4997 [Define if your assembler supports the --gdwarf2 option.])])
4999 gcc_GAS_CHECK_FEATURE([--gstabs option],
5000 gcc_cv_as_gstabs_flag,
5001 [elf,2,11,0], [--gstabs], [$insn],,
5002 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5003 [Define if your assembler supports the --gstabs option.])])
5005 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5006 gcc_cv_as_debug_prefix_map_flag,
5007 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5008 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5009 [Define if your assembler supports the --debug-prefix-map option.])])
5012 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5013 gcc_cv_as_compress_debug,,,,
5014 [# gas compiled without zlib cannot compress debug sections and warns
5015 # about it, but still exits successfully. So check for this, too.
5016 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5018 gcc_cv_as_compress_debug=0
5019 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5020 # defaulting to the ELF gABI format.
5021 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5023 gcc_cv_as_compress_debug=2
5024 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5025 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5026 # Before binutils 2.26, gas only supported --compress-debug-options and
5027 # emitted the traditional GNU format.
5028 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5030 gcc_cv_as_compress_debug=1
5031 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5032 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5034 gcc_cv_as_compress_debug=0
5036 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5037 [Define to the level of your assembler's compressed debug section support.])
5038 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5039 [Define to the assembler option to enable compressed debug sections.])
5040 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5041 [Define to the assembler option to disable compressed debug sections.])
5043 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5046 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5047 [Define if your assembler supports .lcomm with an alignment field.])])
5049 if test x$with_sysroot = x && test x$host = x$target \
5050 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5051 && test "$prefix" != "NONE"; then
5052 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5053 [Define to PREFIX/include if cpp should also search that directory.])
5056 # Determine the version of glibc, if any, used on the target.
5057 AC_MSG_CHECKING([for target glibc version])
5058 AC_ARG_WITH([glibc-version],
5059 [AS_HELP_STRING([--with-glibc-version=M.N],
5060 [assume GCC used with glibc version M.N or later])], [
5061 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5062 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5063 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5065 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5067 glibc_version_major=0
5068 glibc_version_minor=0
5069 [if test -f $target_header_dir/features.h \
5070 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5071 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5072 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5073 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5075 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5076 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5077 [GNU C Library major version number used on the target, or 0.])
5078 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5079 [GNU C Library minor version number used on the target, or 0.])
5081 AC_ARG_ENABLE(gnu-unique-object,
5082 [AS_HELP_STRING([--enable-gnu-unique-object],
5083 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5084 [case $enable_gnu_unique_object in
5086 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5087 Valid choices are 'yes' and 'no'.]) ;;
5089 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5091 [.type foo, '$target_type_format_char'gnu_unique_object],,
5092 # We need to unquote above to to use the definition from config.gcc.
5093 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5094 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5096 if test x$enable_gnu_unique_object = xyes; then
5097 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5098 [Define if your assembler supports @gnu_unique_object.])
5101 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5102 [gcc_cv_as_line_zero],
5103 [gcc_cv_as_line_zero=no
5104 if test $in_tree_gas = yes; then
5105 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5106 elif test "x$gcc_cv_as" != x; then
5107 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5108 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5109 test "x`cat conftest.out`" = x
5111 gcc_cv_as_line_zero=yes
5113 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5114 cat conftest.s >&AS_MESSAGE_LOG_FD
5115 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5116 cat conftest.out >&AS_MESSAGE_LOG_FD
5118 rm -f conftest.o conftest.s conftest.out
5120 if test "x$gcc_cv_as_line_zero" = xyes; then
5121 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5122 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5125 AC_MSG_CHECKING(support for thin archives)
5126 thin_archive_support=no
5127 echo 'int main (void) { return 0; }' > conftest.c
5128 if ($AR --version | sed 1q | grep "GNU ar" \
5129 && $CC $CFLAGS -c conftest.c \
5130 && $AR rcT conftest.a conftest.o \
5131 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5132 thin_archive_support=yes
5134 rm -f conftest.c conftest.o conftest.a conftest
5135 AC_MSG_RESULT($thin_archive_support)
5136 AC_SUBST(thin_archive_support)
5138 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5139 gcc_cv_ld_eh_frame_hdr=no
5140 if test $in_tree_ld = yes ; then
5141 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5142 && test $in_tree_ld_is_elf = yes; then
5143 gcc_cv_ld_eh_frame_hdr=yes
5145 elif test x$gcc_cv_ld != x; then
5146 if echo "$ld_ver" | grep GNU > /dev/null; then
5147 # Check if linker supports --eh-frame-hdr option
5148 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5149 gcc_cv_ld_eh_frame_hdr=yes
5154 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5155 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5156 gcc_cv_ld_eh_frame_hdr=yes
5162 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5163 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5164 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5165 [Define if your linker supports .eh_frame_hdr.])
5167 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5169 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5170 gcc_cv_ld_eh_frame_ciev3=no
5171 if test $in_tree_ld = yes ; then
5172 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5173 && test $in_tree_ld_is_elf = yes; then
5174 gcc_cv_ld_eh_frame_ciev3=yes
5176 elif test x$gcc_cv_ld != x; then
5177 if echo "$ld_ver" | grep GNU > /dev/null; then
5178 gcc_cv_ld_eh_frame_ciev3=yes
5179 if test 0"$ld_date" -lt 20040513; then
5180 if test -n "$ld_date"; then
5181 # If there was date string, but was earlier than 2004-05-13, fail
5182 gcc_cv_ld_eh_frame_ciev3=no
5183 elif test "$ld_vers_major" -lt 2; then
5184 gcc_cv_ld_eh_frame_ciev3=no
5185 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5186 gcc_cv_ld_eh_frame_ciev3=no
5192 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5193 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5194 gcc_cv_ld_eh_frame_ciev3=yes
5200 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5201 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5202 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5203 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5205 AC_MSG_CHECKING(linker position independent executable support)
5207 if test $in_tree_ld = yes ; then
5209 # Full PIE support on Solaris was only introduced in gld 2.26.
5210 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5211 *) gcc_gld_pie_min_version=15 ;;
5213 if test "$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 \
5214 && test $in_tree_ld_is_elf = yes; then
5217 elif test x$gcc_cv_ld != x; then
5218 # Check if linker supports -pie option
5219 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5223 if echo "$ld_ver" | grep GNU > /dev/null \
5224 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5231 *-*-solaris2.1[[1-9]]*)
5232 # Solaris 11.3 added PIE support.
5233 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5240 if test x"$gcc_cv_ld_pie" = xyes; then
5241 AC_DEFINE(HAVE_LD_PIE, 1,
5242 [Define if your linker supports PIE option.])
5244 AC_MSG_RESULT($gcc_cv_ld_pie)
5246 AC_MSG_CHECKING(linker PIE support with copy reloc)
5247 gcc_cv_ld_pie_copyreloc=no
5248 if test $gcc_cv_ld_pie = yes ; then
5249 if test $in_tree_ld = yes ; then
5250 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5251 gcc_cv_ld_pie_copyreloc=yes
5253 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5254 # Check if linker supports -pie option with copy reloc
5256 i?86-*-linux* | x86_64-*-linux*)
5257 cat > conftest1.s <<EOF
5260 .type a_glob, @object
5265 cat > conftest2.s <<EOF
5268 .type main, @function
5270 movl %eax, a_glob(%rip)
5273 .section .data.rel,"aw",@progbits
5278 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5279 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5280 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5281 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5282 gcc_cv_ld_pie_copyreloc=yes
5284 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5289 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5290 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5291 [Define 0/1 if your linker supports -pie option with copy reloc.])
5292 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5294 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5295 gcc_cv_ld_eh_gc_sections=no
5296 if test $in_tree_ld = yes ; then
5297 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5298 && test $in_tree_ld_is_elf = yes; then
5299 gcc_cv_ld_eh_gc_sections=yes
5301 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5302 cat > conftest.s <<EOF
5305 .type _start, @function
5308 .size _start, .-_start
5309 .section .text.foo,"ax",@progbits
5310 .type foo, @function
5314 .section .gcc_except_table.foo,"a",@progbits
5317 .section .eh_frame,"a",@progbits
5320 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5321 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5322 | grep "gc-sections option ignored" > /dev/null; then
5323 gcc_cv_ld_eh_gc_sections=no
5324 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5325 | grep gcc_except_table > /dev/null; then
5326 gcc_cv_ld_eh_gc_sections=yes
5327 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5328 if test x$gcc_cv_as_comdat_group != xyes; then
5329 gcc_cv_ld_eh_gc_sections=no
5330 cat > conftest.s <<EOF
5333 .type _start, @function
5336 .size _start, .-_start
5337 .section .gnu.linkonce.t.foo,"ax",@progbits
5338 .type foo, @function
5342 .section .gcc_except_table.foo,"a",@progbits
5345 .section .eh_frame,"a",@progbits
5348 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5349 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5350 | grep "gc-sections option ignored" > /dev/null; then
5351 gcc_cv_ld_eh_gc_sections=no
5352 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5353 | grep gcc_except_table > /dev/null; then
5354 gcc_cv_ld_eh_gc_sections=yes
5360 rm -f conftest.s conftest.o conftest
5364 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5365 gcc_cv_ld_eh_gc_sections=no
5368 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5369 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5370 [Define if your linker supports garbage collection of
5371 sections in presence of EH frames.])
5373 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5375 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5376 gcc_cv_ld_eh_gc_sections_bug=no
5377 if test $in_tree_ld = yes ; then
5378 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5379 && test $in_tree_ld_is_elf = yes; then
5380 gcc_cv_ld_eh_gc_sections_bug=yes
5382 elif test x$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
5383 gcc_cv_ld_eh_gc_sections_bug=yes
5384 cat > conftest.s <<EOF
5387 .type _start, @function
5390 .size _start, .-_start
5391 .section .text.startup.foo,"ax",@progbits
5392 .type foo, @function
5396 .section .gcc_except_table.foo,"a",@progbits
5399 .section .eh_frame,"a",@progbits
5402 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5403 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5404 | grep "gc-sections option ignored" > /dev/null; then
5406 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5407 | grep gcc_except_table > /dev/null; then
5408 gcc_cv_ld_eh_gc_sections_bug=no
5411 rm -f conftest.s conftest.o conftest
5413 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5414 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5415 [Define if your linker has buggy garbage collection of
5416 sections support when .text.startup.foo like sections are used.])
5418 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5420 AC_MSG_CHECKING(linker for compressed debug sections)
5421 # gold/gld support compressed debug sections since binutils 2.19/2.21
5422 # In binutils 2.26, gld gained support for the ELF gABI format.
5423 if test $in_tree_ld = yes ; then
5424 gcc_cv_ld_compress_debug=0
5425 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5426 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5427 gcc_cv_ld_compress_debug=2
5428 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5429 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5430 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5431 gcc_cv_ld_compress_debug=3
5432 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5433 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5434 && test $in_tree_ld_is_elf = yes; then
5435 gcc_cv_ld_compress_debug=1
5437 elif echo "$ld_ver" | grep GNU > /dev/null; then
5438 if test "$ld_vers_major" -lt 2 \
5439 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5440 gcc_cv_ld_compress_debug=0
5441 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5442 gcc_cv_ld_compress_debug=1
5444 gcc_cv_ld_compress_debug=3
5445 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5447 if test $ld_is_gold = yes; then
5448 gcc_cv_ld_compress_debug=2
5449 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5455 # Introduced in Solaris 11.2.
5456 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5457 gcc_cv_ld_compress_debug=3
5458 gcc_cv_ld_compress_debug_option="-z compress-sections"
5460 gcc_cv_ld_compress_debug=0
5464 # Assume linkers other than GNU ld don't support compessed debug
5466 gcc_cv_ld_compress_debug=0
5471 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5472 [Define to the level of your linker's compressed debug section support.])
5473 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5474 [Define to the linker option to enable compressed debug sections.])
5475 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5477 if test x"$ld64_flag" = x"yes"; then
5479 # Set defaults for possibly untestable items.
5480 gcc_cv_ld64_export_dynamic=0
5482 if test "$build" = "$host"; then
5488 # On Darwin, because of FAT library support, it is often possible to execute
5489 # exes from compatible archs even when the host differs from the build system.
5490 case "$build","$host" in
5491 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5496 # If the configurer specified a minimum ld64 version to be supported, then use
5497 # that to determine feature support.
5498 if test x"${gcc_cv_ld64_version}" != x; then
5499 AC_MSG_CHECKING(ld64 specified version)
5500 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5501 AC_MSG_RESULT($gcc_cv_ld64_major)
5502 if test "$gcc_cv_ld64_major" -ge 236; then
5503 gcc_cv_ld64_export_dynamic=1
5505 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5506 # If the version was not specified, try to find it.
5507 AC_MSG_CHECKING(linker version)
5508 if test x"${gcc_cv_ld64_version}" = x; then
5509 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5511 AC_MSG_RESULT($gcc_cv_ld64_version)
5513 AC_MSG_CHECKING(linker for -export_dynamic support)
5514 gcc_cv_ld64_export_dynamic=1
5515 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5516 gcc_cv_ld64_export_dynamic=0
5518 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5521 if test x"${gcc_cv_ld64_version}" != x; then
5522 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5523 [Define to ld64 version.])
5526 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5527 [Define to 1 if ld64 supports '-export_dynamic'.])
5534 AC_CACHE_CHECK(linker --as-needed support,
5535 gcc_cv_ld_as_needed,
5536 [gcc_cv_ld_as_needed=no
5537 gcc_cv_ld_as_needed_option='--as-needed'
5538 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5539 if test $in_tree_ld = yes ; then
5540 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5541 && test $in_tree_ld_is_elf = yes; then
5542 gcc_cv_ld_as_needed=yes
5543 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5544 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5545 gcc_cv_ld_no_as_needed_option='--pop-state'
5548 elif test x$gcc_cv_ld != x; then
5549 # Check if linker supports --as-needed and --no-as-needed options
5550 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5551 gcc_cv_ld_as_needed=yes
5552 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5553 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5554 && echo "$ld_ver" | grep GNU > /dev/null \
5555 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5556 # Use these options only when both ld.bfd and ld.gold support
5557 # --push-state/--pop-state, which unfortunately wasn't added
5559 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5560 gcc_cv_ld_no_as_needed_option='--pop-state'
5563 case "$target:$gnu_ld" in
5565 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5567 gcc_cv_ld_as_needed=yes
5568 gcc_cv_ld_as_needed_option="-z ignore"
5569 gcc_cv_ld_no_as_needed_option="-z record"
5573 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5574 # dl_iterate_phdr, i.e. since Solaris 11.
5576 *-*-solaris2.1[[1-9]]*)
5578 i?86-*-* | x86_64-*-*)
5579 if echo "$ld_ver" | grep GNU > /dev/null; then
5580 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5581 gcc_cv_ld_as_needed=no
5587 gcc_cv_ld_as_needed=no
5591 if test x"$gcc_cv_ld_as_needed" = xyes; then
5592 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5593 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5594 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5595 [Define to the linker option to ignore unused dependencies.])
5596 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5597 [Define to the linker option to keep unused dependencies.])
5600 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5601 saved_LDFLAGS="$LDFLAGS"
5602 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5603 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5604 AC_LINK_IFELSE([int main(void) {return 0;}],
5605 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5607 LDFLAGS="$saved_LDFLAGS"
5608 if test "x$gcc_cv_ld_clearcap" = xyes; then
5609 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5610 [Define if the linker supports clearing hardware capabilities via mapfile.])
5611 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5613 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5619 emul_name="-melf32lppc"
5622 emul_name="-melf32ppc"
5625 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5627 [gcc_cv_ld_ppc_attr=no
5628 if test x"$ld_is_gold" = xyes; then
5629 gcc_cv_ld_ppc_attr=yes
5630 elif test $in_tree_ld = yes ; then
5631 if test "$gcc_cv_gld_major_version" -eq 2 \
5632 -a "$gcc_cv_gld_minor_version" -ge 28 \
5633 -o "$gcc_cv_gld_major_version" -gt 2; then
5634 gcc_cv_ld_ppc_attr=yes
5636 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5637 # check that merging the long double .gnu_attribute doesn't warn
5638 cat > conftest1.s <<EOF
5641 cat > conftest2.s <<EOF
5644 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5645 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5646 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5647 && test ! -s conftest.err; then
5648 gcc_cv_ld_ppc_attr=yes
5650 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5653 if test x$gcc_cv_ld_ppc_attr = xyes; then
5654 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5655 [Define if your PowerPC linker has .gnu.attributes long double support.])
5660 case "$target:$tm_file" in
5661 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5664 emul_name="-melf64lppc"
5667 emul_name="-melf64ppc"
5670 emul_name="-melf64ppc_fbsd"
5673 AC_CACHE_CHECK(linker support for omitting dot symbols,
5674 gcc_cv_ld_no_dot_syms,
5675 [gcc_cv_ld_no_dot_syms=no
5676 if test x"$ld_is_gold" = xyes; then
5677 gcc_cv_ld_no_dot_syms=yes
5678 elif test $in_tree_ld = yes ; then
5679 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5680 gcc_cv_ld_no_dot_syms=yes
5682 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5683 cat > conftest1.s <<EOF
5687 cat > conftest2.s <<EOF
5688 .section ".opd","aw"
5693 .quad .LEfoo,.TOC.@tocbase,0
5699 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5700 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5701 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5702 gcc_cv_ld_no_dot_syms=yes
5704 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5707 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5708 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5709 [Define if your PowerPC64 linker only needs function descriptor syms.])
5712 AC_CACHE_CHECK(linker large toc support,
5713 gcc_cv_ld_large_toc,
5714 [gcc_cv_ld_large_toc=no
5715 if test x"$ld_is_gold" = xyes; then
5716 gcc_cv_ld_large_toc=yes
5717 elif test $in_tree_ld = yes ; then
5718 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5719 gcc_cv_ld_large_toc=yes
5721 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5722 cat > conftest.s <<EOF
5723 .section ".tbss","awT",@nobits
5729 addis 9,13,ie0@got@tprel@ha
5730 ld 9,ie0@got@tprel@l(9)
5732 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5733 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5734 gcc_cv_ld_large_toc=yes
5736 rm -f conftest conftest.o conftest.s
5739 if test x"$gcc_cv_ld_large_toc" = xyes; then
5740 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5741 [Define if your PowerPC64 linker supports a large TOC.])
5744 AC_CACHE_CHECK(linker toc pointer alignment,
5745 gcc_cv_ld_toc_align,
5746 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5747 cat > conftest.s <<EOF
5752 .section .data.rel.ro,"aw",@progbits
5757 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5758 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5759 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5761 rm -f conftest conftest.o conftest.s
5764 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5765 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5766 [Define to .TOC. alignment forced by your linker.])
5773 AC_CACHE_CHECK(linker large toc support,
5774 gcc_cv_ld_large_toc,
5775 [gcc_cv_ld_large_toc=no
5776 if test x$gcc_cv_as != x ; then
5777 cat > conftest.s <<EOF
5787 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5788 gcc_cv_ld_large_toc=yes
5790 rm -f conftest conftest.o conftest.s
5793 if test x"$gcc_cv_ld_large_toc" = xyes; then
5794 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5795 [Define if your PowerPC64 linker supports a large TOC.])
5800 AC_CACHE_CHECK(linker --build-id support,
5802 [gcc_cv_ld_buildid=no
5803 if test $in_tree_ld = yes ; then
5804 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5805 "$gcc_cv_gld_minor_version" -ge 18 -o \
5806 "$gcc_cv_gld_major_version" -gt 2 \
5807 && test $in_tree_ld_is_elf = yes; then
5808 gcc_cv_ld_buildid=yes
5810 elif test x$gcc_cv_ld != x; then
5811 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5812 gcc_cv_ld_buildid=yes
5815 if test x"$gcc_cv_ld_buildid" = xyes; then
5816 AC_DEFINE(HAVE_LD_BUILDID, 1,
5817 [Define if your linker supports --build-id.])
5820 AC_ARG_ENABLE(linker-build-id,
5821 [AS_HELP_STRING([--enable-linker-build-id],
5822 [compiler will always pass --build-id to linker])],
5824 enable_linker_build_id=no)
5826 if test x"$enable_linker_build_id" = xyes; then
5827 if test x"$gcc_cv_ld_buildid" = xyes; then
5828 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5829 [Define if gcc should always pass --build-id to linker.])
5831 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5835 # In binutils 2.21, GNU ld gained support for new emulations fully
5836 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5837 AC_CACHE_CHECK(linker *_sol2 emulation support,
5838 gcc_cv_ld_sol2_emulation,
5839 [gcc_cv_ld_sol2_emulation=no
5840 if test $in_tree_ld = yes ; then
5841 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5842 "$gcc_cv_gld_minor_version" -ge 21 -o \
5843 "$gcc_cv_gld_major_version" -gt 2 \
5844 && test $in_tree_ld_is_elf = yes; then
5845 gcc_cv_ld_sol2_emulation=yes
5847 elif test x$gcc_cv_ld != x; then
5848 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5849 grep _sol2 > /dev/null; then
5850 gcc_cv_ld_sol2_emulation=yes
5853 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5854 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5855 [Define if your linker supports the *_sol2 emulations.])
5858 AC_CACHE_CHECK(linker --sysroot support,
5860 [gcc_cv_ld_sysroot=no
5861 if test $in_tree_ld = yes ; then
5862 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5863 gcc_cv_ld_sysroot=yes
5865 elif test x$gcc_cv_ld != x; then
5866 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5867 gcc_cv_ld_sysroot=yes
5870 if test x"$gcc_cv_ld_sysroot" = xyes; then
5871 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5872 [Define if your linker supports --sysroot.])
5877 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5878 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5879 gcc_cv_solaris_crts,
5880 [gcc_cv_solaris_crts=no
5881 if test x$host != x$target; then
5882 if test "x$with_sysroot" = xyes; then
5883 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5885 target_sysroot="${with_sysroot}"
5888 target_libdir="$target_sysroot/usr/lib"
5889 # At the time they were added, gcrt1.o became a symlink for backwards
5890 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5892 i?86-*-solaris2* | x86_64-*-solaris2*)
5893 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5896 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5901 if test x$gcc_cv_solaris_crts = xyes; then
5902 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5903 [Define if the system-provided CRTs are present on Solaris.])
5906 AC_ARG_ENABLE(libssp,
5907 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5908 [case "${enableval}" in
5912 AC_MSG_ERROR([unknown libssp setting $enableval])
5916 # Test for stack protector support in target C library.
5917 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5918 gcc_cv_libc_provides_ssp,
5919 [gcc_cv_libc_provides_ssp=no
5920 if test "x$enable_libssp" = "xno"; then
5921 gcc_cv_libc_provides_ssp=yes
5922 elif test "x$enable_libssp" = "xyes"; then
5923 gcc_cv_libc_provides_ssp=no
5927 # All versions of musl provide stack protector
5928 gcc_cv_libc_provides_ssp=yes;;
5929 *-*-linux* | *-*-kfreebsd*-gnu)
5930 # glibc 2.4 and later provides __stack_chk_fail and
5931 # either __stack_chk_guard, or TLS access to stack guard canary.
5932 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5933 [if test -f $target_header_dir/features.h \
5934 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5935 $target_header_dir/features.h > /dev/null; then
5936 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5937 $target_header_dir/features.h > /dev/null && \
5938 test -f $target_header_dir/bits/uClibc_config.h && \
5939 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5940 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5941 gcc_cv_libc_provides_ssp=yes
5943 # all versions of Bionic support stack protector
5944 elif test -f $target_header_dir/sys/cdefs.h \
5945 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5946 $target_header_dir/sys/cdefs.h > /dev/null; then
5947 gcc_cv_libc_provides_ssp=yes
5951 # Avoid complicated tests (see
5952 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5953 # simply assert that glibc does provide this, which is true for all
5954 # realistically usable GNU/Hurd configurations.
5955 # All supported versions of musl provide it as well
5956 gcc_cv_libc_provides_ssp=yes;;
5957 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5958 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5959 [echo "no __stack_chk_fail on this target"])
5961 *) gcc_cv_libc_provides_ssp=no ;;
5965 if test x$gcc_cv_libc_provides_ssp = xyes; then
5966 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5967 [Define if your target C library provides stack protector support])
5970 # Check whether --enable-default-ssp was given.
5971 AC_ARG_ENABLE(default-ssp,
5972 [AS_HELP_STRING([--enable-default-ssp],
5973 [enable Stack Smashing Protection as default])],[
5974 if test x$gcc_cv_libc_provides_ssp = xyes; then
5976 ia64*-*-*) enable_default_ssp=no ;;
5977 *) enable_default_ssp=$enableval ;;
5980 enable_default_ssp=no
5982 enable_default_ssp=no)
5983 if test x$enable_default_ssp = xyes ; then
5984 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5985 [Define if your target supports default stack protector and it is enabled.])
5987 AC_SUBST([enable_default_ssp])
5989 # Test for <sys/sdt.h> on the target.
5990 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5991 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5993 if test -f $target_header_dir/sys/sdt.h; then
5995 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5996 [Define if your target C library provides sys/sdt.h])
5998 AC_MSG_RESULT($have_sys_sdt_h)
6000 # Check if TFmode long double should be used by default or not.
6001 # Some glibc targets used DFmode long double, but with glibc 2.4
6002 # and later they can use TFmode.
6004 powerpc*-*-linux* | \
6008 AC_ARG_WITH(long-double-128,
6009 [AS_HELP_STRING([--with-long-double-128],
6010 [use 128-bit long double by default])],
6011 gcc_cv_target_ldbl128="$with_long_double_128",
6012 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6013 [gcc_cv_target_ldbl128=no
6014 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6015 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6016 && gcc_cv_target_ldbl128=yes
6020 if test x$gcc_cv_target_ldbl128 = xyes; then
6021 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6022 [Define if TFmode long double should be the default])
6025 # Check if TFmode long double target should use the IBM extended double or IEEE
6026 # 128-bit floating point formats if long doubles are 128-bits long. The long
6027 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6028 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6030 AC_ARG_WITH([long-double-format],
6031 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6032 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6033 case "$target:$with_long_double_format" in
6034 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6037 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6038 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6040 power7 | power8 | power9 | power1*)
6044 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6045 supported if the default cpu is power7 or newer])
6046 with_long_double_format=""
6050 xpowerpc64*-*-linux*:*)
6051 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6052 with_long_double_format=""
6055 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6056 on 64-bit PowerPC VSX Linux systems])
6057 with_long_double_format=""
6062 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6063 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6064 gcc_cv_libc_provides_hwcap_in_tcb=no
6067 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6070 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6071 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6072 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6075 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6076 gcc_cv_target_dl_iterate_phdr=unknown
6078 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6079 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6080 # libdl there, both complicating its use and breaking compatibility
6081 # between Solaris 10 updates.
6082 *-*-solaris2.1[[1-9]]*)
6083 # <link.h> needs both a dl_iterate_phdr declaration and support for
6084 # compilation with largefile support.
6085 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6086 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6087 gcc_cv_target_dl_iterate_phdr=yes
6089 gcc_cv_target_dl_iterate_phdr=no
6092 *-*-dragonfly* | *-*-freebsd*)
6093 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6094 gcc_cv_target_dl_iterate_phdr=yes
6096 gcc_cv_target_dl_iterate_phdr=no
6100 gcc_cv_target_dl_iterate_phdr=yes
6103 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6104 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6105 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6106 [Define if your target C library provides the `dl_iterate_phdr' function.])
6108 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6110 # We no longer support different GC mechanisms. Emit an error if
6111 # the user configures with --with-gc.
6113 [AS_HELP_STRING([--with-gc={page,zone}],
6114 [this option is not supported anymore. It used to choose
6115 the garbage collection mechanism to use with the compiler])],
6116 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6119 # Libraries to use on the host. This will normally be set by the top
6120 # level Makefile. Here we simply capture the value for our Makefile.
6121 if test -z "${HOST_LIBS+set}"; then
6126 # Use the system's zlib library.
6129 dnl Very limited version of automake's enable-maintainer-mode
6131 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6132 dnl maintainer-mode is disabled by default
6133 AC_ARG_ENABLE(maintainer-mode,
6134 [AS_HELP_STRING([--enable-maintainer-mode],
6135 [enable make rules and dependencies not useful
6136 (and sometimes confusing) to the casual installer])],
6137 maintainer_mode=$enableval,
6140 AC_MSG_RESULT($maintainer_mode)
6142 if test "$maintainer_mode" = "yes"; then
6149 dnl Whether to prevent multiple front-ends from linking at the same time
6151 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6152 AC_ARG_ENABLE(link-mutex,
6153 [AS_HELP_STRING([--enable-link-mutex],
6154 [avoid linking multiple front-ends at once to avoid thrashing
6155 on the build machine])],
6156 do_link_mutex=$enableval,
6158 AC_MSG_RESULT($do_link_mutex)
6160 if test "$do_link_mutex" = "yes"; then
6165 AC_SUBST(DO_LINK_MUTEX)
6171 # Make empty files to contain the specs and options for each language.
6172 # Then add #include lines to for a compiler that has specs and/or options.
6178 # These (without "all_") are set in each config-lang.in.
6179 # `language' must be a single word so is spelled singularly.
6182 all_outputs='Makefile'
6183 # List of language makefile fragments.
6185 # Additional files for gengtype
6186 all_gtfiles="$target_gtfiles"
6188 # These are the languages that are set in --enable-languages,
6189 # and are available in the GCC tree.
6190 all_selected_languages=
6192 # Add the language fragments.
6193 # Languages are added via two mechanisms. Some information must be
6194 # recorded in makefile variables, these are defined in config-lang.in.
6195 # We accumulate them and plug them into the main Makefile.
6196 # The other mechanism is a set of hooks for each of the main targets
6197 # like `clean', `install', etc.
6199 language_hooks="Make-hooks"
6201 for lang in ${srcdir}/*/config-lang.in
6204 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6206 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6207 if test "x$lang_alias" = x
6209 echo "$lang doesn't set \$language." 1>&2
6212 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6213 subdirs="$subdirs $subdir"
6215 # $gcc_subdir is where the gcc integration files are to be found
6216 # for a language, both for internal compiler purposes (compiler
6217 # sources implementing front-end to GCC tree converters), and for
6218 # build infrastructure purposes (Make-lang.in, etc.)
6220 # This will be <subdir> (relative to $srcdir) if a line like
6221 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6222 # is found in <langdir>/config-lang.in, and will remain <langdir>
6225 # Except for the language alias (fetched above), the regular
6226 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6227 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6228 # only this and the language alias.
6230 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6231 if [ "$gcc_subdir" = "" ]; then
6232 gcc_subdir="$subdir"
6235 case ",$enable_languages," in
6237 all_selected_languages="$all_selected_languages $lang_alias"
6238 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6239 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6251 . ${srcdir}/$gcc_subdir/config-lang.in
6252 if test "x$language" = x
6254 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6259 case ",$enable_languages," in
6262 for i in $subdir_requires; do
6263 test -f "${srcdir}/$i/config-lang.in" && continue
6271 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6272 if test -f $srcdir/$gcc_subdir/lang.opt; then
6273 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6274 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6276 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6277 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6279 all_languages="$all_languages $language"
6280 all_compilers="$all_compilers $compilers"
6281 all_outputs="$all_outputs $outputs"
6282 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6283 case ",$enable_languages," in
6285 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6287 AC_SUBST(enable_lto)
6294 for language in $all_selected_languages
6296 check_languages="$check_languages check-$language"
6299 # We link each language in with a set of hooks, reached indirectly via
6300 # lang.${target}. Only do so for selected languages.
6304 target_list="all.cross start.encap rest.encap tags \
6305 install-common install-man install-info install-pdf install-html dvi \
6306 pdf html uninstall info man srcextra srcman srcinfo \
6307 mostlyclean clean distclean maintainer-clean install-plugin"
6309 for t in $target_list
6312 for lang in $all_selected_languages
6316 echo "lang.$t: $x" >> Make-hooks
6320 # Option include files
6323 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6324 option_includes="option-includes.mk"
6325 AC_SUBST_FILE(option_includes)
6333 echo "dir ." > .gdbinit
6334 echo "dir ${srcdir}" >> .gdbinit
6335 if test x$gdb_needs_out_file_path = xyes
6337 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6339 if test "x$subdirs" != x; then
6342 echo "dir ${srcdir}/$s" >> .gdbinit
6345 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6346 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6348 # Put a breakpoint on __asan_report_error to help with debugging buffer
6351 *-fsanitize=address*)
6352 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6356 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6357 AC_SUBST(gcc_tooldir)
6360 # Find a directory in which to install a shared libgcc.
6362 AC_ARG_ENABLE(version-specific-runtime-libs,
6363 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6364 [specify that runtime libraries should be
6365 installed in a compiler-specific directory])])
6367 # Substitute configuration variables
6370 AC_SUBST(all_compilers)
6371 AC_SUBST(all_gtfiles)
6372 AC_SUBST(all_lang_makefrags)
6373 AC_SUBST(all_languages)
6374 AC_SUBST(all_selected_languages)
6375 AC_SUBST(build_exeext)
6376 AC_SUBST(build_install_headers_dir)
6377 AC_SUBST(build_xm_file_list)
6378 AC_SUBST(build_xm_include_list)
6379 AC_SUBST(build_xm_defines)
6380 AC_SUBST(build_file_translate)
6381 AC_SUBST(check_languages)
6382 AC_SUBST(cpp_install_dir)
6383 AC_SUBST(xmake_file)
6384 AC_SUBST(tmake_file)
6385 AC_SUBST(TM_ENDIAN_CONFIG)
6386 AC_SUBST(TM_MULTILIB_CONFIG)
6387 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6388 AC_SUBST(extra_gcc_objs)
6389 AC_SUBST(user_headers_inc_next_pre)
6390 AC_SUBST(user_headers_inc_next_post)
6391 AC_SUBST(extra_headers_list)
6392 AC_SUBST(extra_objs)
6393 AC_SUBST(extra_programs)
6394 AC_SUBST(float_h_file)
6395 AC_SUBST(gcc_config_arguments)
6396 AC_SUBST(gcc_gxx_include_dir)
6397 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6398 AC_SUBST(host_exeext)
6399 AC_SUBST(host_xm_file_list)
6400 AC_SUBST(host_xm_include_list)
6401 AC_SUBST(host_xm_defines)
6402 AC_SUBST(out_host_hook_obj)
6404 AC_SUBST(lang_opt_files)
6405 AC_SUBST(lang_specs_files)
6406 AC_SUBST(lang_tree_files)
6407 AC_SUBST(local_prefix)
6409 AC_SUBST(objc_boehm_gc)
6411 AC_SUBST(out_object_file)
6412 AC_SUBST(common_out_file)
6413 AC_SUBST(common_out_object_file)
6414 AC_SUBST(tm_file_list)
6415 AC_SUBST(tm_include_list)
6416 AC_SUBST(tm_defines)
6417 AC_SUBST(tm_p_file_list)
6418 AC_SUBST(tm_p_include_list)
6419 AC_SUBST(xm_file_list)
6420 AC_SUBST(xm_include_list)
6421 AC_SUBST(xm_defines)
6422 AC_SUBST(use_gcc_stdint)
6423 AC_SUBST(c_target_objs)
6424 AC_SUBST(cxx_target_objs)
6425 AC_SUBST(fortran_target_objs)
6426 AC_SUBST(target_cpu_default)
6428 AC_SUBST_FILE(language_hooks)
6431 if test x${build} = x${host} ; then
6432 if test x${host} = x${target} ; then
6433 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6435 echo "Links are now set up to build a cross-compiler" 1>&2
6436 echo " from ${host} to ${target}." 1>&2
6439 if test x${host} = x${target} ; then
6440 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6441 echo " for ${target}." 1>&2
6443 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6444 echo " from ${host} to ${target}." 1>&2
6448 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6449 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6451 AC_ARG_VAR(ISLLIBS,[How to link isl])
6452 AC_ARG_VAR(ISLINC,[How to find isl include files])
6453 if test "x${ISLLIBS}" != "x" ; then
6454 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6458 AC_SUBST(pluginlibs)
6459 AC_SUBST(enable_plugin)
6460 if test x"$enable_plugin" = x"yes"; then
6461 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6465 # Enable --enable-host-shared
6466 AC_ARG_ENABLE(host-shared,
6467 [AS_HELP_STRING([--enable-host-shared],
6468 [build host code as shared libraries])],
6469 [PICFLAG=-fPIC], [PICFLAG=])
6470 AC_SUBST(enable_host_shared)
6474 AC_ARG_ENABLE(libquadmath-support,
6475 [AS_HELP_STRING([--disable-libquadmath-support],
6476 [disable libquadmath support for Fortran])],
6477 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6478 ENABLE_LIBQUADMATH_SUPPORT=yes)
6479 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6480 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6481 [Define to 1 to enable libquadmath support])
6485 # Specify what hash style to use by default.
6486 AC_ARG_WITH([linker-hash-style],
6487 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6488 [specify the linker hash style])],
6489 [case x"$withval" in
6491 LINKER_HASH_STYLE=sysv
6494 LINKER_HASH_STYLE=gnu
6497 LINKER_HASH_STYLE=both
6500 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6503 [LINKER_HASH_STYLE=''])
6504 if test x"${LINKER_HASH_STYLE}" != x; then
6505 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6506 [The linker hash style])
6509 # Specify what should be the default of -fdiagnostics-color option.
6510 AC_ARG_WITH([diagnostics-color],
6511 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6512 [specify the default of -fdiagnostics-color option
6513 auto-if-env stands for -fdiagnostics-color=auto if
6514 GCC_COLOR environment variable is present and
6515 -fdiagnostics-color=never otherwise])],
6516 [case x"$withval" in
6518 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6521 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6524 DIAGNOSTICS_COLOR_DEFAULT=-1
6527 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6530 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6533 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6534 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6535 [The default for -fdiagnostics-color option])
6537 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6538 # of jit/jit-playback.c.
6539 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6540 echo "gcc_driver_version: ${gcc_driver_version}"
6541 cat > gcc-driver-name.h <<EOF
6542 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6545 # Check whether --enable-default-pie was given.
6546 AC_ARG_ENABLE(default-pie,
6547 [AS_HELP_STRING([--enable-default-pie],
6548 [enable Position Independent Executable as default])],
6549 enable_default_pie=$enableval,
6550 enable_default_pie=no)
6551 if test x$enable_default_pie = xyes ; then
6552 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6553 [Define if your target supports default PIE and it is enabled.])
6555 AC_SUBST([enable_default_pie])
6557 # Check if -fno-PIE works.
6558 AC_CACHE_CHECK([for -fno-PIE option],
6560 [saved_CXXFLAGS="$CXXFLAGS"
6561 CXXFLAGS="$CXXFLAGS -fno-PIE"
6562 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6563 [gcc_cv_c_no_fpie=yes],
6564 [gcc_cv_c_no_fpie=no])
6565 CXXFLAGS="$saved_CXXFLAGS"])
6566 if test "$gcc_cv_c_no_fpie" = "yes"; then
6567 NO_PIE_CFLAGS="-fno-PIE"
6569 AC_SUBST([NO_PIE_CFLAGS])
6571 # Check if -no-pie works.
6572 AC_CACHE_CHECK([for -no-pie option],
6574 [saved_LDFLAGS="$LDFLAGS"
6575 LDFLAGS="$LDFLAGS -no-pie"
6576 AC_LINK_IFELSE([int main(void) {return 0;}],
6577 [gcc_cv_no_pie=yes],
6579 LDFLAGS="$saved_LDFLAGS"])
6580 if test "$gcc_cv_no_pie" = "yes"; then
6581 NO_PIE_FLAG="-no-pie"
6583 AC_SUBST([NO_PIE_FLAG])
6585 # Check linker supports '-z bndplt'
6586 ld_bndplt_support=no
6587 AC_MSG_CHECKING(linker -z bndplt option)
6588 if test x"$ld_is_gold" = xno; then
6589 if test $in_tree_ld = yes ; then
6590 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6591 ld_bndplt_support=yes
6593 elif test x$gcc_cv_ld != x; then
6594 # Check if linker supports -a bndplt option
6595 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6596 ld_bndplt_support=yes
6600 if test x"$ld_bndplt_support" = xyes; then
6601 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6602 [Define if your linker supports -z bndplt])
6604 AC_MSG_RESULT($ld_bndplt_support)
6606 # Check linker supports '--push-state'/'--pop-state'
6607 ld_pushpopstate_support=no
6608 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6609 if test x"$ld_is_gold" = xno; then
6610 if test $in_tree_ld = yes ; then
6611 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6612 ld_pushpopstate_support=yes
6614 elif test x$gcc_cv_ld != x; then
6615 # Check if linker supports --push-state/--pop-state options
6616 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6617 ld_pushpopstate_support=yes
6621 if test x"$ld_pushpopstate_support" = xyes; then
6622 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6623 [Define if your linker supports --push-state/--pop-state])
6625 AC_MSG_RESULT($ld_pushpopstate_support)
6627 # Configure the subdirectories
6628 # AC_CONFIG_SUBDIRS($subdirs)
6630 # Create the Makefile
6631 # and configure language subdirectories
6632 AC_CONFIG_FILES($all_outputs)
6634 AC_CONFIG_COMMANDS([default],
6636 case ${CONFIG_HEADERS} in
6637 *auto-host.h:config.in*)
6640 # Make sure all the subdirs exist.
6641 for d in $subdirs doc build common c-family
6643 test -d $d || mkdir $d
6646 [subdirs='$subdirs'])