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_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1748 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1749 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1752 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1755 # Double all backslashes and backslash all quotes to turn
1756 # gcc_config_arguments into a C string.
1757 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1758 $gcc_config_arguments
1760 gcc_config_arguments_str=`cat conftest.out`
1763 cat > configargs.h <<EOF
1764 /* Generated automatically. */
1765 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1766 static const char thread_model[] = "$thread_file";
1768 static const struct {
1769 const char *name, *value;
1770 } configure_default_options[] = $configure_default_options;
1775 gcc_BASEVER=`cat $srcdir/BASE-VER`
1776 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1777 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1778 if test -f $srcdir/REVISION ; then
1779 gcc_REVISION=`cat $srcdir/REVISION`
1783 cat > plugin-version.h <<EOF
1784 #include "configargs.h"
1786 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1787 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1788 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1789 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1791 static char basever[] = "$gcc_BASEVER";
1792 static char datestamp[] = "$gcc_DATESTAMP";
1793 static char devphase[] = "$gcc_DEVPHASE";
1794 static char revision[] = "$gcc_REVISION";
1796 /* FIXME plugins: We should make the version information more precise.
1797 One way to do is to add a checksum. */
1799 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1801 configuration_arguments};
1805 # Determine what GCC version number to use in filesystem paths.
1808 # Internationalization
1809 ZW_GNU_GETTEXT_SISTER_DIR
1811 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1812 # -liconv on the link line twice.
1813 case "$LIBINTL" in *$LIBICONV*)
1817 AC_ARG_ENABLE(secureplt,
1818 [AS_HELP_STRING([--enable-secureplt],
1819 [enable -msecure-plt by default for PowerPC])],
1822 AC_ARG_ENABLE(mingw-wildcard,
1823 [AS_HELP_STRING([--enable-mingw-wildcard],
1824 [Set whether to expand wildcard on command-line.
1825 Default to platform configuration])],
1826 [],[enable_mingw_wildcard=platform])
1827 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1828 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1829 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1830 [Value to set mingw's _dowildcard to.])])
1832 AC_ARG_ENABLE(leading-mingw64-underscores,
1833 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1834 [enable leading underscores on 64 bit mingw targets]),
1836 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1837 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1838 [Define if we should use leading underscore on 64 bit mingw targets])])
1841 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1844 AC_ARG_ENABLE(frame-pointer,
1845 [AS_HELP_STRING([--enable-frame-pointer],
1846 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1849 linux* | darwin[[8912]]*)
1850 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1852 enable_frame_pointer=no
1855 enable_frame_pointer=yes
1860 # Windows32 Registry support for specifying GCC installation paths.
1861 AC_ARG_ENABLE(win32-registry,
1862 [AS_HELP_STRING([--disable-win32-registry],
1863 [disable lookup of installation paths in the
1864 Registry on Windows hosts])
1865 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1866 AS_HELP_STRING([--enable-win32-registry=KEY],
1867 [use KEY instead of GCC version as the last portion
1868 of the registry key])],,)
1871 win32 | pe | cygwin* | mingw32*)
1872 if test "x$enable_win32_registry" != xno; then
1873 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1876 if test "x$enable_win32_registry" != xno; then
1877 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1878 [Define to 1 if installation paths should be looked up in the Windows
1879 Registry. Ignored on non-Windows hosts.])
1881 if test "x$enable_win32_registry" != xyes \
1882 && test "x$enable_win32_registry" != x; then
1883 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1884 [Define to be the last component of the Windows registry key under which
1885 to look for installation paths. The full key used will be
1886 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1887 The default is the GCC version number.])
1893 # Get an absolute path to the GCC top-level source directory
1894 holddir=`${PWDCMD-pwd}`
1896 topdir=`${PWDCMD-pwd}`
1899 # Conditionalize the makefile for this host machine.
1901 for f in ${host_xmake_file}
1903 if test -f ${srcdir}/config/$f
1905 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1909 # Conditionalize the makefile for this target machine.
1911 for f in ${tmake_file}
1913 if test -f ${srcdir}/config/$f
1915 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1918 tmake_file="${tmake_file_}"
1920 out_object_file=`basename $out_file .c`.o
1921 common_out_object_file=`basename $common_out_file .c`.o
1923 tm_file_list="options.h"
1924 tm_include_list="options.h insn-constants.h"
1925 for f in $tm_file; do
1928 f=`echo $f | sed 's/^..//'`
1929 tm_file_list="${tm_file_list} $f"
1930 tm_include_list="${tm_include_list} $f"
1933 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1934 tm_include_list="${tm_include_list} $f"
1937 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1938 tm_include_list="${tm_include_list} config/$f"
1945 for f in $tm_p_file; do
1948 tm_p_file_list="${tm_p_file_list} $f"
1949 tm_p_include_list="${tm_p_include_list} $f"
1952 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1953 tm_p_include_list="${tm_p_include_list} config/$f"
1959 for f in $xm_file; do
1962 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1963 xm_include_list="${xm_include_list} $f"
1966 xm_file_list="${xm_file_list} $f"
1967 xm_include_list="${xm_include_list} $f"
1970 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1971 xm_include_list="${xm_include_list} config/$f"
1977 host_xm_include_list=
1978 for f in $host_xm_file; do
1981 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1982 host_xm_include_list="${host_xm_include_list} $f"
1985 host_xm_file_list="${host_xm_file_list} $f"
1986 host_xm_include_list="${host_xm_include_list} $f"
1989 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1990 host_xm_include_list="${host_xm_include_list} config/$f"
1996 for f in $build_xm_file; do
1999 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2000 build_xm_include_list="${build_xm_include_list} $f"
2002 auto-build.h | auto-host.h )
2003 build_xm_file_list="${build_xm_file_list} $f"
2004 build_xm_include_list="${build_xm_include_list} $f"
2007 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2008 build_xm_include_list="${build_xm_include_list} config/$f"
2013 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2014 # cross-compiler which does not use the native headers and libraries.
2015 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2016 CROSS= AC_SUBST(CROSS)
2017 ALL=all.internal AC_SUBST(ALL)
2018 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2019 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2021 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2022 test x$build != x$host || test "x$with_build_sysroot" != x; then
2023 if test "x$with_build_sysroot" != x; then
2024 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2026 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2029 if test x$host != x$target
2031 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2033 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2034 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2035 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2038 if test "x$with_build_sysroot" != "x"; then
2039 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2040 elif test "x$with_sysroot" = x; then
2041 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2042 elif test "x$with_sysroot" = xyes; then
2043 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2045 target_header_dir="${with_sysroot}${native_system_header_dir}"
2048 target_header_dir=${native_system_header_dir}
2051 # If this is a cross-compiler that does not
2052 # have its own set of headers then define
2055 # If this is using newlib, without having the headers available now,
2056 # then define inhibit_libc in LIBGCC2_CFLAGS.
2057 # This prevents libgcc2 from containing any code which requires libc
2059 : ${inhibit_libc=false}
2060 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2061 test x$with_newlib = xyes ; } &&
2062 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2065 AC_SUBST(inhibit_libc)
2067 # When building gcc with a cross-compiler, we need to adjust things so
2068 # that the generator programs are still built with the native compiler.
2069 # Also, we cannot run fixincludes.
2071 # These are the normal (build=host) settings:
2072 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2073 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2074 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2075 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2076 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2077 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2079 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2080 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2082 # And these apply if build != host, or we are generating coverage data
2083 if test x$build != x$host || test "x$coverage_flags" != x
2085 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2086 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2087 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2089 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2090 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2091 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2092 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2094 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2095 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2097 # Expand extra_headers to include complete path.
2098 # This substitutes for lots of t-* files.
2100 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2101 for file in ${extra_headers} ; do
2102 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2105 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2106 if test x"$use_gcc_tgmath" = xyes
2107 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2110 # Define collect2 in Makefile.
2111 case $host_can_use_collect2 in
2113 *) collect2='collect2$(exeext)' ;;
2115 AC_SUBST([collect2])
2117 # Add a definition of USE_COLLECT2 if system wants one.
2118 case $use_collect2 in
2119 no) use_collect2= ;;
2122 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2123 xm_defines="${xm_defines} USE_COLLECT2"
2124 case $host_can_use_collect2 in
2126 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2132 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2133 [Define to the name of the LTO plugin DSO that must be
2134 passed to the linker's -plugin=LIB option.])
2136 # ---------------------------
2137 # Assembler & linker features
2138 # ---------------------------
2140 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2141 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2142 # However when ld-new is first executed from the build tree, libtool will
2143 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2144 # to the build tree. While doing this we need to use the previous-stage
2145 # linker, or we have an infinite loop. The presence of a shell script as
2146 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2147 # the gcc/collect-ld script. So we need to know how libtool works, or
2148 # exec-tool will fail.
2150 m4_defun([_LT_CONFIG_COMMANDS], [])
2153 AC_SUBST(enable_fast_install)
2155 # Identify the assembler which will work hand-in-glove with the newly
2156 # built GCC, so that we can examine its features. This is the assembler
2157 # which will be driven by the driver program.
2159 # If build != host, and we aren't building gas in-tree, we identify a
2160 # build->target assembler and hope that it will have the same features
2161 # as the host->target assembler we'll be using.
2162 gcc_cv_gas_major_version=
2163 gcc_cv_gas_minor_version=
2164 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2166 m4_pattern_allow([AS_FOR_TARGET])dnl
2167 AS_VAR_SET_IF(gcc_cv_as,, [
2168 if test -x "$DEFAULT_ASSEMBLER"; then
2169 gcc_cv_as="$DEFAULT_ASSEMBLER"
2170 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2171 && test -f ../gas/Makefile \
2172 && test x$build = x$host; then
2173 gcc_cv_as=../gas/as-new$build_exeext
2174 elif test -x as$build_exeext; then
2175 # Build using assembler in the current directory.
2176 gcc_cv_as=./as$build_exeext
2177 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2178 gcc_cv_as="$AS_FOR_TARGET"
2180 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2183 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2184 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2185 case "$ORIGINAL_AS_FOR_TARGET" in
2186 ./as | ./as$build_exeext) ;;
2187 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2190 AC_MSG_CHECKING(what assembler to use)
2191 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2192 # Single tree build which includes gas. We want to prefer it
2193 # over whatever linker top-level may have detected, since
2194 # we'll use what we're building after installation anyway.
2195 AC_MSG_RESULT(newly built gas)
2197 _gcc_COMPUTE_GAS_VERSION
2198 in_tree_gas_is_elf=no
2199 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2200 || (grep 'obj_format = multi' ../gas/Makefile \
2201 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2203 in_tree_gas_is_elf=yes
2206 AC_MSG_RESULT($gcc_cv_as)
2212 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2213 [case "${enableval}" in
2219 install_gold_as_default=no
2221 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2222 [case "${enableval}" in
2224 install_gold_as_default=yes
2227 if test x${default_ld} != x; then
2228 install_gold_as_default=yes
2234 AC_MSG_ERROR([invalid --enable-gold argument])
2238 # Identify the linker which will work hand-in-glove with the newly
2239 # built GCC, so that we can examine its features. This is the linker
2240 # which will be driven by the driver program.
2242 # If build != host, and we aren't building gas in-tree, we identify a
2243 # build->target linker and hope that it will have the same features
2244 # as the host->target linker we'll be using.
2245 gcc_cv_gld_major_version=
2246 gcc_cv_gld_minor_version=
2247 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2248 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2249 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2251 AS_VAR_SET_IF(gcc_cv_ld,, [
2252 if test -x "$DEFAULT_LINKER"; then
2253 gcc_cv_ld="$DEFAULT_LINKER"
2254 elif test $install_gold_as_default = yes \
2255 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2256 && test -f ../gold/Makefile \
2257 && test x$build = x$host; then
2258 gcc_cv_ld=../gold/ld-new$build_exeext
2259 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2260 && test -f ../ld/Makefile \
2261 && test x$build = x$host; then
2262 gcc_cv_ld=../ld/ld-new$build_exeext
2263 elif test -x collect-ld$build_exeext; then
2264 # Build using linker in the current directory.
2265 gcc_cv_ld=./collect-ld$build_exeext
2266 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2267 gcc_cv_ld="$LD_FOR_TARGET"
2269 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2272 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2273 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2274 # if the PLUGIN_LD is set ld-new, just have it as ld
2275 # as that is the installed named.
2276 if test x$PLUGIN_LD_SUFFIX = xld-new \
2277 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2280 AC_ARG_WITH(plugin-ld,
2281 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2282 [if test x"$withval" != x; then
2283 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2284 PLUGIN_LD_SUFFIX="$withval"
2286 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2287 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2289 # Check to see if we are using gold instead of ld
2290 AC_MSG_CHECKING(whether we are using gold)
2292 if test x$gcc_cv_ld != x; then
2293 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2294 | grep "GNU gold" > /dev/null; then
2298 AC_MSG_RESULT($ld_is_gold)
2300 AC_MSG_CHECKING(gold linker with split stack support as non default)
2301 # Check to see if default ld is not gold, but gold is
2302 # available and has support for split stack. If gcc was configured
2303 # with gold then no checking is done.
2305 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2307 # For platforms other than powerpc64*, enable as appropriate.
2310 ld_gold=`which ${gcc_cv_ld}.gold`
2311 # Make sure this gold has minimal split stack support
2312 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2313 ld_vers=`$ld_gold --version | sed 1q`
2314 gold_vers=`echo $ld_vers | sed -n \
2315 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2317 # check that the gold version contains the complete split stack support
2318 # on powerpc64 big and little endian
2320 case "$gold_vers" in
2321 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2323 *) gold_non_default=no
2329 if test $gold_non_default = yes; then
2330 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2331 [Define if the gold linker supports split stack and is available as a non-default])
2334 AC_MSG_RESULT($gold_non_default)
2336 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2337 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2338 case "$ORIGINAL_LD_FOR_TARGET" in
2339 ./collect-ld | ./collect-ld$build_exeext) ;;
2340 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2343 AC_MSG_CHECKING(what linker to use)
2344 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2345 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2346 # Single tree build which includes ld. We want to prefer it
2347 # over whatever linker top-level may have detected, since
2348 # we'll use what we're building after installation anyway.
2349 AC_MSG_RESULT(newly built ld)
2351 in_tree_ld_is_elf=no
2352 if (grep 'EMUL = .*elf' ../ld/Makefile \
2353 || grep 'EMUL = .*linux' ../ld/Makefile \
2354 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2355 in_tree_ld_is_elf=yes
2356 elif test "$ld_is_gold" = yes; then
2357 in_tree_ld_is_elf=yes
2359 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
2362 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2363 if test x$gcc_cv_gld_version != x; then
2367 case $gcc_cv_gld_version in
2370 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2373 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2374 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2376 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2377 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2379 AC_MSG_RESULT($gcc_cv_ld)
2381 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2382 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2383 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2386 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2387 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2389 # Figure out what nm we will be using.
2390 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2391 AS_VAR_SET_IF(gcc_cv_nm,, [
2392 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2393 && test -f ../binutils/Makefile \
2394 && test x$build = x$host; then
2395 gcc_cv_nm=../binutils/nm-new$build_exeext
2396 elif test -x nm$build_exeext; then
2397 gcc_cv_nm=./nm$build_exeext
2398 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2399 gcc_cv_nm="$NM_FOR_TARGET"
2401 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2404 AC_MSG_CHECKING(what nm to use)
2405 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2406 # Single tree build which includes binutils.
2407 AC_MSG_RESULT(newly built nm)
2410 AC_MSG_RESULT($gcc_cv_nm)
2414 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2415 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2416 case "$ORIGINAL_NM_FOR_TARGET" in
2417 ./nm | ./nm$build_exeext) ;;
2418 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2422 # Figure out what objdump we will be using.
2423 AS_VAR_SET_IF(gcc_cv_objdump,, [
2424 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2425 && test -f ../binutils/Makefile \
2426 && test x$build = x$host; then
2427 # Single tree build which includes binutils.
2428 gcc_cv_objdump=../binutils/objdump$build_exeext
2429 elif test -x objdump$build_exeext; then
2430 gcc_cv_objdump=./objdump$build_exeext
2431 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2432 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2434 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2437 AC_MSG_CHECKING(what objdump to use)
2438 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2439 # Single tree build which includes binutils.
2440 AC_MSG_RESULT(newly built objdump)
2441 elif test x$gcc_cv_objdump = x; then
2442 AC_MSG_RESULT(not found)
2444 AC_MSG_RESULT($gcc_cv_objdump)
2447 # Figure out what readelf we will be using.
2448 AS_VAR_SET_IF(gcc_cv_readelf,, [
2449 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2450 && test -f ../binutils/Makefile \
2451 && test x$build = x$host; then
2452 # Single tree build which includes binutils.
2453 gcc_cv_readelf=../binutils/readelf$build_exeext
2454 elif test -x readelf$build_exeext; then
2455 gcc_cv_readelf=./readelf$build_exeext
2456 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2457 gcc_cv_readelf="$READELF_FOR_TARGET"
2459 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2462 AC_MSG_CHECKING(what readelf to use)
2463 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2464 # Single tree build which includes binutils.
2465 AC_MSG_RESULT(newly built readelf)
2466 elif test x$gcc_cv_readelf = x; then
2467 AC_MSG_RESULT(not found)
2469 AC_MSG_RESULT($gcc_cv_readelf)
2472 # Figure out what assembler alignment features are present.
2473 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2477 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2478 [Define if your assembler supports .balign and .p2align.])])
2480 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2483 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2484 [Define if your assembler supports specifying the maximum number
2485 of bytes to skip when using the GAS .p2align command.])])
2487 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2490 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2491 [Define if your assembler supports .literal16.])])
2493 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2495 [conftest_label1: .word 0
2497 conftest_label2: .word 0
2499 [if test x$gcc_cv_nm != x; then
2500 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2501 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2502 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2504 else gcc_cv_as_subsection_m1=yes
2506 rm -f conftest.nm1 conftest.nm2
2508 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2509 [Define if your assembler supports .subsection and .subsection -1 starts
2510 emitting at the beginning of your section.])])
2512 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2515 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2517 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2519 [ .weakref foobar, barfnot],,
2520 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2522 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2525 .NSUBSPA $CODE$,COMDAT],,
2526 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2528 # .hidden needs to be supported in both the assembler and the linker,
2529 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2530 # This is irritatingly difficult to feature test for; we have to check the
2531 # date string after the version number. If we've got an in-tree
2532 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2534 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2537 conftest_s=' .globl foobar,hidden'
2540 conftest_s=' .hidden foobar
2544 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2545 [elf,2,13,0],, [$conftest_s])
2548 # Darwin as has some visibility support, though with a different syntax.
2549 gcc_cv_as_hidden=yes
2553 # gnu_indirect_function type is an extension proposed at
2554 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2555 # selection of function implementation
2556 AC_ARG_ENABLE(gnu-indirect-function,
2557 [AS_HELP_STRING([--enable-gnu-indirect-function],
2558 [enable the use of the @gnu_indirect_function to glibc systems])],
2559 [case $enable_gnu_indirect_function in
2561 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2562 Valid choices are 'yes' and 'no'.]) ;;
2564 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2566 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2567 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2568 [Define if your system supports gnu indirect functions.])
2572 if test $in_tree_ld != yes ; then
2573 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2574 if echo "$ld_ver" | grep GNU > /dev/null; then
2575 if test x"$ld_is_gold" = xyes; then
2576 # GNU gold --version looks like this:
2578 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2580 # We extract the binutils version which is more familiar and specific
2581 # than the gold version.
2582 ld_vers=`echo $ld_ver | sed -n \
2583 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2585 # GNU ld --version looks like this:
2587 # GNU ld (GNU Binutils) 2.21.51.20110225
2588 ld_vers=`echo $ld_ver | sed -n \
2589 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2591 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2592 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2593 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2594 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2598 # Solaris 2 ld -V output looks like this for a regular version:
2600 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2602 # but test versions add stuff at the end:
2604 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2606 # In Solaris 11.4, this was changed to
2608 # ld: Solaris ELF Utilities: 11.4-1.3123
2610 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2611 # numbers can be used in ld.so.1 feature checks even if a different
2612 # linker is configured.
2613 ld_ver=`$gcc_cv_ld -V 2>&1`
2614 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2615 ld_vers=`echo $ld_ver | sed -n \
2616 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2617 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2618 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2626 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2627 [[if test $in_tree_ld = yes ; then
2629 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2630 && test $in_tree_ld_is_elf = yes; then
2631 gcc_cv_ld_hidden=yes
2634 gcc_cv_ld_hidden=yes
2635 if test x"$ld_is_gold" = xyes; then
2637 elif echo "$ld_ver" | grep GNU > /dev/null; then
2639 mmix-knuth-mmixware)
2640 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2644 if test 0"$ld_date" -lt 20020404; then
2645 if test -n "$ld_date"; then
2646 # If there was date string, but was earlier than 2002-04-04, fail
2648 elif test -z "$ld_vers"; then
2649 # If there was no date string nor ld version number, something is wrong
2652 test -z "$ld_vers_patch" && ld_vers_patch=0
2653 if test "$ld_vers_major" -lt 2; then
2655 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2656 gcc_cv_ld_hidden="no"
2657 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2665 gcc_cv_ld_hidden=yes
2668 # Darwin ld has some visibility support.
2669 gcc_cv_ld_hidden=yes
2671 hppa64*-*-hpux* | ia64*-*-hpux*)
2672 gcc_cv_ld_hidden=yes
2674 *-*-solaris2.1[0-9]*)
2675 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2676 # .symbolic was only added in Solaris 9 12/02.
2677 gcc_cv_ld_hidden=yes
2685 libgcc_visibility=no
2686 AC_SUBST(libgcc_visibility)
2687 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2688 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2689 libgcc_visibility=yes
2690 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2691 [Define if your assembler and linker support .hidden.])
2694 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2695 gcc_cv_ld_ro_rw_mix=unknown
2696 if test $in_tree_ld = yes ; then
2697 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2698 && test $in_tree_ld_is_elf = yes; then
2699 gcc_cv_ld_ro_rw_mix=read-write
2701 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2702 echo '.section myfoosect, "a"' > conftest1.s
2703 echo '.section myfoosect, "aw"' > conftest2.s
2704 echo '.byte 1' >> conftest2.s
2705 echo '.section myfoosect, "a"' > conftest3.s
2706 echo '.byte 0' >> conftest3.s
2707 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2708 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2709 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2710 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2711 conftest2.o conftest3.o > /dev/null 2>&1; then
2712 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2713 | sed -e '/myfoosect/!d' -e N`
2714 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2715 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2716 gcc_cv_ld_ro_rw_mix=read-only
2718 gcc_cv_ld_ro_rw_mix=read-write
2723 rm -f conftest.* conftest[123].*
2726 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2727 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2728 [Define if your linker links a mix of read-only
2729 and read-write sections into a read-write section.])
2731 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2733 gcc_AC_INITFINI_ARRAY
2735 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2736 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2744 [[# GAS versions before 2.11 do not support uleb128,
2745 # despite appearing to.
2746 # ??? There exists an elf-specific test that will crash
2747 # the assembler. Perhaps it's better to figure out whether
2748 # arbitrary sections are supported and try the test.
2749 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2750 if echo "$as_ver" | grep GNU > /dev/null; then
2751 as_vers=`echo $as_ver | sed -n \
2752 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2753 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2754 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2755 if test $as_major -eq 2 && test $as_minor -lt 11
2757 else gcc_cv_as_leb128=yes
2760 [AC_DEFINE(HAVE_AS_LEB128, 1,
2761 [Define if your assembler supports .sleb128 and .uleb128.])],
2762 [AC_DEFINE(HAVE_AS_LEB128, 0,
2763 [Define if your assembler supports .sleb128 and .uleb128.])])
2765 # Determine if an .eh_frame section is read-only.
2766 gcc_fn_eh_frame_ro () {
2767 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2768 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2769 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2772 # Check if we have assembler support for unwind directives.
2773 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2780 .cfi_escape 1, 2, 3, 4, 5
2784 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2785 # read-only and read-write sections, we need to make sure that the
2786 # assembler used emits read-write .eh_frame sections.
2787 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2788 gcc_cv_as_cfi_directive=yes
2789 elif test "x$gcc_cv_objdump" = x; then
2790 # No objdump, err on the side of caution.
2791 gcc_cv_as_cfi_directive=no
2793 if test x$gas = xyes; then
2801 sparc*-*-solaris2.*)
2802 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2803 if gcc_fn_eh_frame_ro $as_32_opt \
2804 || gcc_fn_eh_frame_ro $as_64_opt; then
2805 gcc_cv_as_cfi_directive=no
2807 gcc_cv_as_cfi_directive=yes
2810 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2811 # On Solaris/x86, make sure that GCC and assembler agree on using
2812 # read-only .eh_frame sections for 64-bit.
2813 if gcc_fn_eh_frame_ro $as_32_opt; then
2814 gcc_cv_as_cfi_directive=no
2815 elif gcc_fn_eh_frame_ro $as_64_opt; then
2816 gcc_cv_as_cfi_directive=yes
2818 gcc_cv_as_cfi_directive=no
2825 gcc_cv_as_cfi_directive=yes
2828 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2829 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2833 .cfi_adjust_cfa_offset 64
2835 .cfi_adjust_cfa_offset 128
2838 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2839 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2840 gcc_cv_as_cfi_advance_working=yes
2844 # no objdump, err on the side of caution
2845 gcc_cv_as_cfi_advance_working=no
2847 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2848 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2849 [`if test $gcc_cv_as_cfi_directive = yes \
2850 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2851 [Define 0/1 if your assembler supports CFI directives.])
2853 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2854 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2855 gcc_cv_as_cfi_personality_directive, ,,
2858 .cfi_personality 0, symbol
2860 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2861 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2862 then echo 1; else echo 0; fi`],
2863 [Define 0/1 if your assembler supports .cfi_personality.])
2865 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2866 gcc_cv_as_cfi_sections_directive, ,,
2868 .cfi_sections .debug_frame, .eh_frame
2872 win32 | pe | cygwin* | mingw32*)
2873 # Need to check that we generated the correct relocation for the
2874 # .debug_frame section. This was fixed for binutils 2.21.
2875 gcc_cv_as_cfi_sections_directive=no
2876 if test "x$gcc_cv_objdump" != x; then
2877 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2878 grep secrel > /dev/null; then
2879 gcc_cv_as_cfi_sections_directive=yes
2884 gcc_cv_as_cfi_sections_directive=yes
2887 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2888 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2889 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2890 then echo 1; else echo 0; fi`],
2891 [Define 0/1 if your assembler supports .cfi_sections.])
2893 # GAS versions up to and including 2.11.0 may mis-optimize
2895 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2903 .section .eh_frame,"aw",@progbits
2905 .4byte .LECIE1-.LSCIE1
2919 .4byte .LEFDE1-.LASFDE1
2921 .4byte .LASFDE1-__FRAME_BEGIN__
2929 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2930 cat > conftest.lit <<EOF
2931 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2932 0010 01000000 12000000 18000000 00000000 ................
2933 0020 08000000 04080000 0044 .........D @&t@
2935 cat > conftest.big <<EOF
2936 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2937 0010 00000001 00000012 00000018 00000000 ................
2938 0020 00000008 04000000 0844 .........D @&t@
2940 # If the assembler didn't choke, and we can objdump,
2941 # and we got the correct data, then succeed.
2942 # The text in the here-document typically retains its unix-style line
2943 # endings, while the output of objdump will use host line endings.
2944 # Therefore, use diff -b for the comparisons.
2945 if test x$gcc_cv_objdump != x \
2946 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2947 | tail -3 > conftest.got \
2948 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2949 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2951 gcc_cv_as_eh_frame=yes
2952 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2953 gcc_cv_as_eh_frame=buggy
2955 # Uh oh, what do we do now?
2956 gcc_cv_as_eh_frame=no
2959 if test $gcc_cv_as_eh_frame = buggy; then
2960 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2961 [Define if your assembler mis-optimizes .eh_frame data.])
2964 # Test if the assembler supports the section flag 'e' or #exclude for
2965 # specifying an excluded section.
2966 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
2967 [2,22,51], [--fatal-warnings],
2970 if test $gcc_cv_as_section_exclude_e = no; then
2972 # Solaris as uses #exclude instead.
2976 conftest_s='.section "foo1", #exclude'
2978 i?86-*-solaris2* | x86_64-*-solaris2*)
2979 conftest_s='.section foo1, #exclude'
2984 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
2988 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
2989 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
2990 [Define if your assembler supports specifying the exclude section flag.])
2992 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2993 [elf,2,12,0], [--fatal-warnings],
2994 [.section .rodata.str, "aMS", @progbits, 1])
2995 if test $gcc_cv_as_shf_merge = no; then
2996 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2997 [elf,2,12,0], [--fatal-warnings],
2998 [.section .rodata.str, "aMS", %progbits, 1])
3001 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
3002 # SHF_MERGE support in Solaris 10/x86 ld is broken.
3003 if test x"$gnu_ld" = xno; then
3004 gcc_cv_as_shf_merge=no
3008 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3009 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3010 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3012 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3013 [.stabs "gcc2_compiled.",60,0,0,0],,
3014 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3015 [Define if your assembler supports .stabs.])])
3017 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3018 gcc_cv_as_comdat_group,
3019 [elf,2,16,0], [--fatal-warnings],
3020 [.section .text,"axG",@progbits,.foo,comdat])
3021 if test $gcc_cv_as_comdat_group = yes; then
3022 gcc_cv_as_comdat_group_percent=no
3023 gcc_cv_as_comdat_group_group=no
3025 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3026 gcc_cv_as_comdat_group_percent,
3027 [elf,2,16,0], [--fatal-warnings],
3028 [.section .text,"axG",%progbits,.foo,comdat])
3029 if test $gcc_cv_as_comdat_group_percent = yes; then
3030 gcc_cv_as_comdat_group_group=no
3033 # Sun as uses a completely different syntax.
3038 .group foo,".text%foo",#comdat
3039 .section ".text%foo", #alloc,#execinstr,#progbits
3044 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3046 .group foo,.text%foo,#comdat
3047 .section .text%foo, "ax", @progbits
3053 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3054 gcc_cv_as_comdat_group_group,
3058 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3059 gcc_cv_as_comdat_group_group=no
3063 if test x"$ld_is_gold" = xyes; then
3065 elif test $in_tree_ld = yes ; then
3067 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3068 && test $in_tree_ld_is_elf = yes; then
3071 elif echo "$ld_ver" | grep GNU > /dev/null; then
3073 if test 0"$ld_date" -lt 20050308; then
3074 if test -n "$ld_date"; then
3075 # If there was date string, but was earlier than 2005-03-08, fail
3077 elif test "$ld_vers_major" -lt 2; then
3079 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3086 *-*-solaris2.1[1-9]*)
3088 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3089 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3092 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3093 # least ld version 1.2267.
3094 if test "$ld_vers_major" -gt 1; then
3096 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3098 elif test "$ld_vers_minor" -ge 2267; then
3103 # Assume linkers other than GNU ld don't support COMDAT group.
3109 # Allow overriding the automatic COMDAT group tests above.
3110 AC_ARG_ENABLE(comdat,
3111 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3112 [comdat_group="$enable_comdat"])
3113 if test $comdat_group = no; then
3114 gcc_cv_as_comdat_group=no
3115 gcc_cv_as_comdat_group_percent=no
3116 gcc_cv_as_comdat_group_group=no
3118 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3119 [`if test $gcc_cv_as_comdat_group = yes \
3120 || test $gcc_cv_as_comdat_group_percent = yes \
3121 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3122 [Define 0/1 if your assembler and linker support COMDAT groups.])
3124 # Restrict this test to Solaris/x86: other targets define this statically.
3126 i?86-*-solaris2* | x86_64-*-solaris2*)
3127 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3128 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3132 # Full support for hidden thunks in linkonce sections only appeared in
3133 # Solaris 11/OpenSolaris.
3134 *-*-solaris2.1[[1-9]]*)
3142 AC_MSG_RESULT($hidden_linkonce)
3143 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3144 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3145 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3149 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3154 .loc 1 1 0 is_stmt 1],,
3155 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3156 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3158 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3159 gcc_cv_as_discriminator,
3163 .loc 1 1 0 discriminator 1],,
3164 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3165 [Define if your assembler supports the .loc discriminator sub-directive.])])
3167 # Thread-local storage - the check is heavily parameterized.
3176 .section ".tdata","awT",@progbits
3179 ldq $27,__tls_get_addr($29) !literal!1
3180 lda $16,foo($29) !tlsgd!1
3181 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3182 ldq $27,__tls_get_addr($29) !literal!2
3183 lda $16,foo($29) !tlsldm!2
3184 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3185 ldq $1,foo($29) !gotdtprel
3186 ldah $2,foo($29) !dtprelhi
3187 lda $3,foo($2) !dtprello
3188 lda $4,foo($29) !dtprel
3189 ldq $1,foo($29) !gottprel
3190 ldah $2,foo($29) !tprelhi
3191 lda $3,foo($2) !tprello
3192 lda $4,foo($29) !tprel'
3195 tls_as_opt=--fatal-warnings
3199 add_s r0,r0, @foo@tpoff'
3203 cris-*-*|crisv32-*-*)
3205 .section ".tdata","awT",@progbits
3212 tls_as_opt=--fatal-warnings
3216 .section ".tdata","awT",@progbits
3228 .section ".tdata","awT",@progbits
3232 addil LT%foo-$tls_gdidx$,gp
3233 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3236 addil LT%foo-$tls_ldidx$,gp
3238 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3239 addil LR%foo-$tls_dtpoff$,%ret0
3240 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3242 addil LT%foo-$tls_ieoff$,gp
3243 ldw RT%foo-$tls_ieoff$(%r1),%t2
3246 addil LR%foo-$tls_leoff$,%t1
3247 ldo RR%foo-$tls_leoff$(%r1),%t2'
3250 tls_as_opt=--fatal-warnings
3254 .section ".tdata","awT",%progbits
3265 i[34567]86-*-* | x86_64-*-*)
3267 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3274 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3276 .section .tdata,"awt",@progbits'
3281 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3282 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3286 .section ".tdata","awT",@progbits'
3290 tls_as_opt="--fatal-warnings"
3294 conftest_s="$conftest_s
3298 leal foo@tlsgd(,%ebx,1), %eax
3299 leal foo@tlsldm(%ebx), %eax
3300 leal foo@dtpoff(%eax), %edx
3301 movl foo@gottpoff(%ebx), %eax
3302 subl foo@gottpoff(%ebx), %eax
3303 addl foo@gotntpoff(%ebx), %eax
3304 movl foo@indntpoff, %eax
3305 movl \$foo@tpoff, %eax
3306 subl \$foo@tpoff, %eax
3307 leal foo@ntpoff(%ecx), %eax"
3310 if test x$on_solaris = xyes; then
3312 yes) tls_as_opt="$tls_as_opt --64" ;;
3313 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3316 conftest_s="$conftest_s
3320 leaq foo@tlsgd(%rip), %rdi
3321 leaq foo@tlsld(%rip), %rdi
3322 leaq foo@dtpoff(%rax), %rdx
3323 movq foo@gottpoff(%rip), %rax
3324 movq \$foo@tpoff, %rax"
3330 .section ".tdata","awT",@progbits
3333 addl r16 = @ltoff(@dtpmod(foo#)), gp
3334 addl r17 = @ltoff(@dtprel(foo#)), gp
3335 addl r18 = @ltoff(@tprel(foo#)), gp
3336 addl r19 = @dtprel(foo#), gp
3337 adds r21 = @dtprel(foo#), r13
3338 movl r23 = @dtprel(foo#)
3339 addl r20 = @tprel(foo#), gp
3340 adds r22 = @tprel(foo#), r13
3341 movl r24 = @tprel(foo#)'
3344 tls_as_opt=--fatal-warnings
3348 .section .tdata,"awT",@progbits
3352 addik r5,r20,x@TLSGD
3353 addik r5,r20,x@TLSLDM'
3356 tls_as_opt='--fatal-warnings'
3360 .section .tdata,"awT",@progbits
3364 addiu $4, $28, %tlsgd(x)
3365 addiu $4, $28, %tlsldm(x)
3366 lui $4, %dtprel_hi(x)
3367 addiu $4, $4, %dtprel_lo(x)
3368 lw $4, %gottprel(x)($28)
3369 lui $4, %tprel_hi(x)
3370 addiu $4, $4, %tprel_lo(x)'
3373 tls_as_opt='-32 --fatal-warnings'
3377 .section .tdata,"awT",@progbits
3382 move.l x@TLSGD(%a5),%a0
3383 move.l x@TLSLDM(%a5),%a0
3384 move.l x@TLSLDO(%a5),%a0
3385 move.l x@TLSIE(%a5),%a0
3386 move.l x@TLSLE(%a5),%a0'
3389 tls_as_opt='--fatal-warnings'
3393 .section ".tdata","awT",@progbits'
3396 tls_as_opt="--fatal-warnings"
3400 .section ".tdata","awT",%progbits
3404 add x0, x0, #:tlsgd_lo12:x
3409 tls_as_opt='--fatal-warnings'
3413 .extern __get_tpointer
3431 .section ".tdata","awT",@progbits
3439 addi 3,2,ld0@got@tlsgd
3445 addi 3,2,x1@got@tlsld
3451 addis 9,3,x2@dtprel@ha
3452 addi 9,9,x2@dtprel@l
3455 ld 9,x3@got@dtprel(2)
3461 tls_as_opt="-a64 --fatal-warnings"
3465 .section ".tdata","awT",@progbits
3473 addi 3,31,ld0@got@tlsgd
3475 addi 3,31,x1@got@tlsld
3478 addis 9,3,x2@dtprel@ha
3479 addi 9,9,x2@dtprel@l
3480 lwz 9,x3@got@tprel(31)
3483 addis 9,2,x2@tprel@ha
3484 addi 9,9,x2@tprel@l'
3487 tls_as_opt="-a32 --fatal-warnings"
3491 .section .tdata,"awT",@progbits
3495 call __tls_get_addr'
3498 tls_as_opt='--fatal-warnings'
3502 .section ".tdata","awT",@progbits
3511 l %r1,foo@GOTNTPOFF(%r12)
3512 l %r1,0(%r1):tls_load:foo
3513 bas %r14,0(%r1,%r13):tls_gdcall:foo
3514 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3517 tls_as_opt="-m31 --fatal-warnings"
3521 .section ".tdata","awT",@progbits
3529 lg %r1,foo@GOTNTPOFF(%r12)
3530 larl %r1,foo@INDNTPOFF
3531 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3532 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3535 tls_as_opt="-m64 -Aesame --fatal-warnings"
3537 sh-*-* | sh[123456789lbe]*-*-*)
3539 .section ".tdata","awT",@progbits
3549 tls_as_opt=--fatal-warnings
3553 sparc*-sun-solaris2.*)
3560 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3562 .section ".tdata",#alloc,#write,#tls'
3567 .section ".tdata","awT",@progbits'
3570 tls_as_opt="-32 --fatal-warnings"
3572 conftest_s="$conftest_s
3575 sethi %tgd_hi22(foo), %o0
3576 add %o0, %tgd_lo10(foo), %o1
3577 add %l7, %o1, %o0, %tgd_add(foo)
3578 call __tls_get_addr, %tgd_call(foo)
3579 sethi %tldm_hi22(foo), %l1
3580 add %l1, %tldm_lo10(foo), %l2
3581 add %l7, %l2, %o0, %tldm_add(foo)
3582 call __tls_get_addr, %tldm_call(foo)
3583 sethi %tldo_hix22(foo), %l3
3584 xor %l3, %tldo_lox10(foo), %l4
3585 add %o0, %l4, %l5, %tldo_add(foo)
3586 sethi %tie_hi22(foo), %o3
3587 add %o3, %tie_lo10(foo), %o3
3588 ld [%l7 + %o3], %o2, %tie_ld(foo)
3589 add %g7, %o2, %o4, %tie_add(foo)
3590 sethi %tle_hix22(foo), %l1
3591 xor %l1, %tle_lox10(foo), %o5
3592 ld [%g7 + %o5], %o1"
3596 .section ".tdata","awT",@progbits
3599 addli r0, zero, tls_gd(foo)
3600 auli r0, zero, tls_gd_ha16(foo)
3601 addli r0, r0, tls_gd_lo16(foo)
3603 addli r0, zero, tls_ie(foo)
3604 auli r0, r0, tls_ie_ha16(foo)
3605 addli r0, r0, tls_ie_lo16(foo)'
3608 tls_as_opt="--fatal-warnings"
3612 .section ".tdata","awT",@progbits
3615 shl16insli r0, zero, hw0_last_tls_gd(foo)
3616 shl16insli r0, zero, hw1_last_tls_gd(foo)
3617 shl16insli r0, r0, hw0_tls_gd(foo)
3619 shl16insli r0, zero, hw1_last_tls_ie(foo)
3620 shl16insli r0, r0, hw0_tls_ie(foo)'
3623 tls_as_opt="--fatal-warnings"
3627 .section ".tdata","awT",@progbits
3630 movi a8, foo@TLSFUNC
3631 movi a10, foo@TLSARG
3632 callx8.tls a8, foo@TLSCALL'
3639 if test "x$enable_tls" = xno ; then
3640 : # TLS explicitly disabled.
3641 elif test "x$enable_tls" = xyes ; then
3642 set_have_as_tls=yes # TLS explicitly enabled.
3643 elif test -z "$tls_first_major"; then
3644 : # If we don't have a check, assume no support.
3646 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3647 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3648 [set_have_as_tls=yes])
3650 if test $set_have_as_tls = yes ; then
3651 AC_DEFINE(HAVE_AS_TLS, 1,
3652 [Define if your assembler and linker support thread-local storage.])
3655 # Target-specific assembler checks.
3657 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3658 gcc_cv_ld_static_dynamic=no
3659 gcc_cv_ld_static_option='-Bstatic'
3660 gcc_cv_ld_dynamic_option='-Bdynamic'
3661 if test $in_tree_ld = yes ; then
3662 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3663 gcc_cv_ld_static_dynamic=yes
3665 elif test x$gcc_cv_ld != x; then
3666 # Check if linker supports -Bstatic/-Bdynamic option
3667 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3668 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3669 gcc_cv_ld_static_dynamic=yes
3672 # AIX ld uses -b flags
3673 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3674 gcc_cv_ld_static_dynamic=yes
3675 gcc_cv_ld_static_option="-bstatic"
3676 gcc_cv_ld_dynamic_option="-bdynamic"
3678 # HP-UX ld uses -a flags to select between shared and archive.
3680 if test x"$gnu_ld" = xno; then
3681 gcc_cv_ld_static_dynamic=yes
3682 gcc_cv_ld_static_option="-aarchive_shared"
3683 gcc_cv_ld_dynamic_option="-adefault"
3686 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3688 gcc_cv_ld_static_dynamic=yes
3693 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3694 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3695 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3696 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3697 [Define to the linker option to disable use of shared objects.])
3698 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3699 [Define to the linker option to enable use of shared objects.])
3701 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3703 AC_MSG_CHECKING(linker --version-script option)
3704 gcc_cv_ld_version_script=no
3705 ld_version_script_option=''
3706 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3707 gcc_cv_ld_version_script=yes
3708 ld_version_script_option='--version-script'
3709 elif test x$gcc_cv_ld != x; then
3711 # Solaris 2 ld always supports -M. It also supports a subset of
3712 # --version-script since Solaris 11.4, but requires
3713 # -z gnu-version-script-compat to activate.
3715 gcc_cv_ld_version_script=yes
3716 ld_version_script_option='-M'
3720 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3721 AC_MSG_RESULT($gcc_cv_ld_version_script)
3722 AC_SUBST(ld_version_script_option)
3724 AC_MSG_CHECKING(linker soname option)
3726 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3727 gcc_cv_ld_soname=yes
3728 ld_soname_option='-soname'
3729 elif test x$gcc_cv_ld != x; then
3732 gcc_cv_ld_soname=yes
3733 ld_soname_option='-install_name'
3735 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3736 # ld compatiblity since some Solaris 10 update.
3738 gcc_cv_ld_soname=yes
3739 ld_soname_option='-h'
3743 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3744 AC_MSG_RESULT($gcc_cv_ld_soname)
3745 AC_SUBST(ld_soname_option)
3747 if test x"$demangler_in_ld" = xyes; then
3748 AC_MSG_CHECKING(linker --demangle support)
3749 gcc_cv_ld_demangle=no
3750 if test $in_tree_ld = yes; then
3751 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3752 gcc_cv_ld_demangle=yes
3754 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3755 # Check if the GNU linker supports --demangle option
3756 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3757 gcc_cv_ld_demangle=yes
3760 if test x"$gcc_cv_ld_demangle" = xyes; then
3761 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3762 [Define if your linker supports --demangle option.])
3764 AC_MSG_RESULT($gcc_cv_ld_demangle)
3767 AC_MSG_CHECKING(linker plugin support)
3769 if test -f liblto_plugin.la; then
3770 save_ld_ver="$ld_ver"
3771 save_ld_vers_major="$ld_vers_major"
3772 save_ld_vers_minor="$ld_vers_minor"
3773 save_ld_is_gold="$ld_is_gold"
3777 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3779 # FIXME: ld_is_gold?
3780 ld_vers_major="$gcc_cv_gld_major_version"
3781 ld_vers_minor="$gcc_cv_gld_minor_version"
3783 # Determine plugin linker version.
3784 # FIXME: Partial duplicate from above, generalize.
3786 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3787 if echo "$ld_ver" | grep GNU > /dev/null; then
3788 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3790 ld_vers=`echo $ld_ver | sed -n \
3791 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3793 ld_vers=`echo $ld_ver | sed -n \
3794 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3796 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3797 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3802 # Determine plugin support.
3803 if echo "$ld_ver" | grep GNU > /dev/null; then
3804 # Require GNU ld or gold 2.21+ for plugin support by default.
3805 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3807 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3808 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3813 ld_ver="$save_ld_ver"
3814 ld_vers_major="$save_ld_vers_major"
3815 ld_vers_minor="$save_ld_vers_minor"
3816 ld_is_gold="$save_ld_is_gold"
3818 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3819 [Define to the level of your linker's plugin support.])
3820 AC_MSG_RESULT($gcc_cv_lto_plugin)
3822 # Target OS-specific assembler checks.
3824 case "$target_os" in
3826 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3827 gcc_cv_as_mmacosx_version_min,,
3828 [-mmacosx-version-min=10.1], [.text],,
3829 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3830 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3834 # Target CPU-specific assembler checks.
3838 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3839 [-mabi=lp64], [.text],,,)
3840 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3841 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3842 [Define if your assembler supports the -mabi option.])
3844 if test x$with_abi = xilp32; then
3845 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3846 Upgrade the Assembler.])
3848 if test x"$with_multilib_list" = xdefault; then
3849 TM_MULTILIB_CONFIG=lp64
3851 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3852 for aarch64_multilib in ${aarch64_multilibs}; do
3853 case ${aarch64_multilib} in
3855 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3856 Upgrade the Assembler.])
3864 # Check if we have binutils support for relocations types needed by -fpic
3865 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3868 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3869 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3870 [Define if your assembler supports relocs needed by -fpic.])])
3871 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3872 AC_ARG_ENABLE(fix-cortex-a53-835769,
3874 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3875 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3876 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3877 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3882 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3887 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3888 Valid choices are 'yes' and 'no'.])
3894 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3895 AC_ARG_ENABLE(fix-cortex-a53-843419,
3897 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3898 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3899 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3900 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3905 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3910 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3911 Valid choices are 'yes' and 'no'.])
3919 # All TARGET_ABI_OSF targets.
3920 alpha*-*-linux* | alpha*-*-*bsd*)
3921 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3922 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3925 extbl $3, $2, $3 !lituse_bytoff!1
3926 ldq $2, a($29) !literal!1
3927 ldq $4, b($29) !literal!2
3928 ldq_u $3, 0($2) !lituse_base!1
3929 ldq $27, f($29) !literal!5
3930 jsr $26, ($27), f !lituse_jsr!5
3931 ldah $29, 0($26) !gpdisp!3
3932 lda $0, c($29) !gprel
3933 ldah $1, d($29) !gprelhigh
3934 lda $1, d($1) !gprellow
3935 lda $29, 0($29) !gpdisp!3],,
3936 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3937 [Define if your assembler supports explicit relocations.])])
3938 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3939 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3942 ldq $27, a($29) !literal!1
3943 jsr $26, ($27), a !lituse_jsrdirect!1],,
3944 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3945 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3949 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3950 [--mlink-relax], [.text],,
3951 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3952 [Define if your avr assembler supports --mlink-relax option.])])
3954 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3956 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3957 [Define if your avr assembler supports -mrmw option.])])
3959 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3960 gcc_cv_as_avr_mgccisr,,
3966 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3967 [Define if your avr assembler supports -mgcc-isr option.])])
3969 # Check how default linker description file implements .rodata for
3970 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3971 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3972 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3973 cat > conftest.s <<EOF
3974 .section .rodata,"a",@progbits
3976 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3981 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3982 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3983 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3984 if test -s conftest.nm
3986 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3988 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3989 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3991 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3992 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3993 cat conftest.nm >&AS_MESSAGE_LOG_FD
3994 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3995 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3998 AC_MSG_RESULT(test failed)
3999 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4000 cat conftest.s >&AS_MESSAGE_LOG_FD
4001 AC_MSG_WARN([[see `config.log' for details]])
4003 rm -f conftest.s conftest.o conftest.elf conftest.nm
4007 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4008 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4009 [-no-mul-bug-abort], [.text],,
4010 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4011 [Define if your assembler supports the -no-mul-bug-abort option.])])
4015 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
4016 [.register %g2, #scratch],,
4017 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
4018 [Define if your assembler supports .register.])])
4020 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4022 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4023 [Define if your assembler supports -relax option.])])
4025 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4026 gcc_cv_as_sparc_gotdata_op,,
4033 sethi %gdop_hix22(foo), %g1
4034 xor %g1, %gdop_lox10(foo), %g1
4035 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4036 [if test x$gcc_cv_ld != x \
4037 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4038 if test x$gcc_cv_objdump != x; then
4039 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4040 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4041 gcc_cv_as_sparc_gotdata_op=no
4043 gcc_cv_as_sparc_gotdata_op=yes
4048 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4049 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4051 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4052 gcc_cv_as_sparc_ua_pcrel,,
4060 .uaword %r_disp32(foo)],
4061 [if test x$gcc_cv_ld != x \
4062 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4063 gcc_cv_as_sparc_ua_pcrel=yes
4066 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4067 [Define if your assembler and linker support unaligned PC relative relocs.])
4069 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4070 gcc_cv_as_sparc_ua_pcrel_hidden,,
4075 .uaword %r_disp32(foo)
4076 .byte 0x32, 0x33, 0x34
4081 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4082 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4083 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4084 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4085 if $gcc_cv_objdump -R conftest 2> /dev/null \
4086 | grep 'DISP32' > /dev/null 2>&1; then
4089 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4093 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4094 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4095 ]) # unaligned pcrel relocs
4097 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4098 gcc_cv_as_sparc_offsetable_lo10,,
4101 or %g1, %lo(ab) + 12, %g1
4102 or %g1, %lo(ab + 12), %g1],
4103 [if test x$gcc_cv_objdump != x \
4104 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4105 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4106 gcc_cv_as_sparc_offsetable_lo10=yes
4108 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4109 [Define if your assembler supports offsetable %lo().])])
4111 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4112 gcc_cv_as_sparc_fmaf,,
4115 .register %g2, #scratch
4116 .register %g3, #scratch
4118 fmaddd %f0, %f2, %f4, %f6
4119 addxccc %g1, %g2, %g3
4120 fsrl32 %f2, %f4, %f8
4121 fnaddd %f10, %f12, %f14],,
4122 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4123 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4125 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4126 gcc_cv_as_sparc_sparc4,,
4129 .register %g2, #scratch
4130 .register %g3, #scratch
4133 1: cwbneg %g2, %g3, 1f
4136 aes_kexpand0 %f4, %f6, %f8
4137 des_round %f38, %f40, %f42, %f44
4138 camellia_f %f54, %f56, %f58, %f60
4139 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4140 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4141 [Define if your assembler supports SPARC4 instructions.])])
4143 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4144 gcc_cv_as_sparc_sparc5,,
4147 .register %g2, #scratch
4148 .register %g3, #scratch
4151 fpadd8 %f0, %f2, %f4],,
4152 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4153 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4155 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4156 gcc_cv_as_sparc_sparc6,,
4159 .register %g2, #scratch
4160 .register %g3, #scratch
4163 fpsll64x %f0, %f2, %f4],,
4164 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4165 [Define if your assembler supports SPARC6 instructions.])])
4167 gcc_GAS_CHECK_FEATURE([LEON instructions],
4168 gcc_cv_as_sparc_leon,,
4171 .register %g2, #scratch
4172 .register %g3, #scratch
4176 casa [[%g2]] 0xb, %g3, %g1],,
4177 [AC_DEFINE(HAVE_AS_LEON, 1,
4178 [Define if your assembler supports LEON instructions.])])
4182 i[34567]86-*-* | x86_64-*-*)
4186 # Full C++ conformance when using a shared libstdc++-v3 requires some
4187 # support from the Cygwin DLL, which in more recent versions exports
4188 # wrappers to aid in interposing and redirecting operators new, delete,
4189 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4190 # are configuring for a version of Cygwin that exports the wrappers.
4191 if test x$host = x$target && test x$host_cpu = xi686; then
4192 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4194 # Can't check presence of libc functions during cross-compile, so
4195 # we just have to assume we're building for an up-to-date target.
4196 gcc_ac_cygwin_dll_wrappers=yes
4198 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4199 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4200 [Define if you want to generate code by default that assumes that the
4201 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4204 cygwin* | pe | mingw32*)
4205 # Recent binutils allows the three-operand form of ".comm" on PE. This
4206 # definition is used unconditionally to initialise the default state of
4207 # the target option variable that governs usage of the feature.
4208 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4209 [2,19,52],,[.comm foo,1,32])
4210 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4211 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4212 [Define if your assembler supports specifying the alignment
4213 of objects allocated using the GAS .comm command.])
4214 # Used for DWARF 2 in PE
4215 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4216 gcc_cv_as_ix86_pe_secrel32,
4222 [if test x$gcc_cv_ld != x \
4223 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4224 gcc_cv_as_ix86_pe_secrel32=yes
4227 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4228 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4229 # Test if the assembler supports the extended form of the .section
4230 # directive that specifies section alignment. LTO support uses this,
4231 # but normally only after installation, so we warn but don't fail the
4232 # configure if LTO is enabled but the assembler does not support it.
4233 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4234 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4235 if test x$gcc_cv_as_section_has_align != xyes; then
4236 case ",$enable_languages," in
4238 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4245 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4246 [-xbrace_comment=no], [.text],,
4247 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4248 [Define if your assembler supports -xbrace_comment option.])])
4250 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4251 gcc_cv_as_ix86_filds,,,
4252 [filds (%ebp); fists (%ebp)],,
4253 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4254 [Define if your assembler uses filds and fists mnemonics.])])
4256 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4257 gcc_cv_as_ix86_fildq,,,
4258 [fildq (%ebp); fistpq (%ebp)],,
4259 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4260 [Define if your assembler uses fildq and fistq mnemonics.])])
4262 gcc_GAS_CHECK_FEATURE([cmov syntax],
4263 gcc_cv_as_ix86_cmov_sun_syntax,,,
4264 [cmovl.l %edx, %eax],,
4265 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4266 [Define if your assembler supports the Sun syntax for cmov.])])
4268 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4269 gcc_cv_as_ix86_ffreep,,,
4271 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4272 [Define if your assembler supports the ffreep mnemonic.])])
4274 gcc_GAS_CHECK_FEATURE([.quad directive],
4275 gcc_cv_as_ix86_quad,,,
4277 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4278 [Define if your assembler supports the .quad directive.])])
4280 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4281 gcc_cv_as_ix86_sahf,,,
4284 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4285 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4287 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4288 gcc_cv_as_ix86_interunit_movq,,,
4292 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4293 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4294 [Define if your assembler supports interunit movq mnemonic.])
4296 gcc_GAS_CHECK_FEATURE([hle prefixes],
4297 gcc_cv_as_ix86_hle,,,
4298 [lock xacquire cmpxchg %esi, (%ecx)],,
4299 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4300 [Define if your assembler supports HLE prefixes.])])
4302 gcc_GAS_CHECK_FEATURE([swap suffix],
4303 gcc_cv_as_ix86_swap,,,
4304 [movl.s %esp, %ebp],,
4305 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4306 [Define if your assembler supports the swap suffix.])])
4308 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4309 gcc_cv_as_ix86_diff_sect_delta,,,
4317 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4318 [Define if your assembler supports the subtraction of symbols in different sections.])])
4320 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4321 gcc_cv_as_ix86_rep_lock_prefix,,,
4327 lock addl %edi, (%eax,%esi)
4328 lock orl $0, (%esp)],,
4329 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4330 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4332 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4333 gcc_cv_as_ix86_ud2,,,
4335 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4336 [Define if your assembler supports the 'ud2' mnemonic.])])
4338 # Enforce 32-bit output with gas and gld.
4339 if test x$gas = xyes; then
4340 as_ix86_gas_32_opt="--32"
4342 if echo "$ld_ver" | grep GNU > /dev/null; then
4343 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4344 ld_ix86_gld_32_opt="-melf_i386_sol2"
4346 ld_ix86_gld_32_opt="-melf_i386"
4350 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4351 gcc_cv_as_ix86_tlsgdplt,,
4352 [$as_ix86_gas_32_opt],
4353 [call tls_gd@tlsgdplt],
4354 [if test x$gcc_cv_ld != x \
4355 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4356 gcc_cv_as_ix86_tlsgdplt=yes
4359 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4360 [Define if your assembler and linker support @tlsgdplt.])])
4363 .section .tdata,"aw'$tls_section_flag'",@progbits
4365 .section .text,"ax",@progbits
4366 call tls_ld@tlsldmplt'
4368 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4369 gcc_cv_as_ix86_tlsldmplt,,
4370 [$as_ix86_gas_32_opt],
4372 [if test x$gcc_cv_ld != x \
4373 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4374 gcc_cv_as_ix86_tlsldmplt=yes
4377 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4378 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4379 [Define to 1 if your assembler and linker support @tlsldmplt.])
4382 .section .text,"ax",@progbits
4384 .type _start, @function
4386 leal value@tlsldm(%ebx), %eax
4387 call ___tls_get_addr@plt
4389 .section .tdata,"aw'$tls_section_flag'",@progbits
4390 .type value, @object
4392 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4393 gcc_cv_as_ix86_tlsldm,,
4394 [$as_ix86_gas_32_opt],
4396 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4397 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4398 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4399 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4400 gcc_cv_as_ix86_tlsldm=yes
4404 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4405 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4406 [Define to 1 if your assembler and linker support @tlsldm.])
4417 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4418 gcc_cv_as_ix86_got32x,,
4419 [$as_ix86_gas_32_opt],
4421 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4422 && test x$gcc_cv_readelf != x \
4423 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4424 | grep R_386_GOT32X > /dev/null 2>&1 \
4425 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4426 if $gcc_cv_objdump -dw conftest 2>&1 \
4427 | grep 0xffffff > /dev/null 2>&1; then
4428 gcc_cv_as_ix86_got32x=no
4430 gcc_cv_as_ix86_got32x=yes
4434 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4435 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4436 [Define 0/1 if your assembler and linker support @GOT.])
4438 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4439 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4440 [$as_ix86_gas_32_opt],
4446 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4447 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4448 [Define true if the assembler supports '.long foo@GOTOFF'.])
4451 .section .text,"ax",@progbits
4453 .type _start, @function
4455 leal ld@tlsldm(%ecx), %eax
4456 call *___tls_get_addr@GOT(%ecx)
4457 leal gd@tlsgd(%ecx), %eax
4458 call *___tls_get_addr@GOT(%ecx)
4460 .section .tdata,"aw'$tls_section_flag'",@progbits
4468 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4469 gcc_cv_as_ix86_tls_get_addr_via_got,,
4470 [$as_ix86_gas_32_opt],
4472 [if test x$gcc_cv_ld != x \
4473 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4474 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4477 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4478 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4479 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4483 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4484 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4486 addl r15 = @ltoffx(x#), gp
4488 ld8.mov r16 = [[r15]], x#],,
4489 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4490 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4498 gcc_GAS_CHECK_FEATURE([.machine directive support],
4499 gcc_cv_as_machine_directive,,,
4500 [ .machine ppc7400])
4501 if test x$gcc_cv_as_machine_directive != xyes; then
4502 echo "*** This target requires an assembler supporting \".machine\"" >&2
4503 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4504 test x$build = x$target && exit 1
4510 *-*-aix*) conftest_s=' .machine "pwr5"
4513 *-*-darwin*) conftest_s=' .text
4515 *) conftest_s=' .machine power4
4520 gcc_GAS_CHECK_FEATURE([mfcr field support],
4521 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4523 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4524 [Define if your assembler supports mfcr field.])])
4527 *-*-aix*) conftest_s=' .machine "pwr5"
4530 *) conftest_s=' .machine power5
4535 gcc_GAS_CHECK_FEATURE([popcntb support],
4536 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4538 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4539 [Define if your assembler supports popcntb field.])])
4542 *-*-aix*) conftest_s=' .machine "pwr5x"
4545 *) conftest_s=' .machine power5
4550 gcc_GAS_CHECK_FEATURE([fp round support],
4551 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4553 [AC_DEFINE(HAVE_AS_FPRND, 1,
4554 [Define if your assembler supports fprnd.])])
4557 *-*-aix*) conftest_s=' .machine "pwr6"
4560 *) conftest_s=' .machine power6
4565 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4566 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4568 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4569 [Define if your assembler supports mffgpr and mftgpr.])])
4572 *-*-aix*) conftest_s=' .csect .text[[PR]]
4574 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4578 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4579 *) conftest_s=' .text
4581 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4584 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4585 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4587 [AC_DEFINE(HAVE_AS_REL16, 1,
4588 [Define if your assembler supports R_PPC_REL16 relocs.])])
4591 *-*-aix*) conftest_s=' .machine "pwr6"
4594 *) conftest_s=' .machine power6
4599 gcc_GAS_CHECK_FEATURE([compare bytes support],
4600 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4602 [AC_DEFINE(HAVE_AS_CMPB, 1,
4603 [Define if your assembler supports cmpb.])])
4606 *-*-aix*) conftest_s=' .machine "pwr6"
4609 *) conftest_s=' .machine power6
4614 gcc_GAS_CHECK_FEATURE([decimal float support],
4615 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4617 [AC_DEFINE(HAVE_AS_DFP, 1,
4618 [Define if your assembler supports DFP instructions.])])
4621 *-*-aix*) conftest_s=' .machine "pwr7"
4624 *) conftest_s=' .machine power7
4629 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4630 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4632 [AC_DEFINE(HAVE_AS_VSX, 1,
4633 [Define if your assembler supports VSX instructions.])])
4636 *-*-aix*) conftest_s=' .machine "pwr7"
4639 *) conftest_s=' .machine power7
4644 gcc_GAS_CHECK_FEATURE([popcntd support],
4645 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4647 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4648 [Define if your assembler supports POPCNTD instructions.])])
4651 *-*-aix*) conftest_s=' .machine "pwr8"
4652 .csect .text[[PR]]';;
4653 *) conftest_s=' .machine power8
4657 gcc_GAS_CHECK_FEATURE([power8 support],
4658 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4660 [AC_DEFINE(HAVE_AS_POWER8, 1,
4661 [Define if your assembler supports POWER8 instructions.])])
4664 *-*-aix*) conftest_s=' .machine "pwr9"
4665 .csect .text[[PR]]';;
4666 *) conftest_s=' .machine power9
4670 gcc_GAS_CHECK_FEATURE([power9 support],
4671 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4673 [AC_DEFINE(HAVE_AS_POWER9, 1,
4674 [Define if your assembler supports POWER9 instructions.])])
4677 *-*-aix*) conftest_s=' .csect .text[[PR]]
4679 *) conftest_s=' .text
4683 gcc_GAS_CHECK_FEATURE([lwsync support],
4684 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4686 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4687 [Define if your assembler supports LWSYNC instructions.])])
4690 *-*-aix*) conftest_s=' .machine "476"
4693 *) conftest_s=' .machine "476"
4698 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4699 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4701 [AC_DEFINE(HAVE_AS_DCI, 1,
4702 [Define if your assembler supports the DCI/ICI instructions.])])
4704 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4705 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4706 [.gnu_attribute 4,1],,
4707 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4708 [Define if your assembler supports .gnu_attribute.])])
4710 gcc_GAS_CHECK_FEATURE([tls marker support],
4711 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4712 [ bl __tls_get_addr(x@tlsgd)],,
4713 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4714 [Define if your assembler supports arg info for __tls_get_addr.])])
4716 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4717 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4718 [ .reloc .,R_PPC64_ENTRY; nop],,
4719 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4720 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4724 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4725 gcc_cv_as_aix_ref, [2,21,0],,
4726 [ .csect stuff[[rw]]
4732 [AC_DEFINE(HAVE_AS_REF, 1,
4733 [Define if your assembler supports .ref])])
4735 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4736 gcc_cv_as_aix_dwloc, [2,21,0],,
4741 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4742 [Define if your assembler supports AIX debug frame section label reference.])])
4748 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4749 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4750 [ lw $4,%gp_rel(foo)($4)],,
4751 [if test x$target_cpu_default = x
4752 then target_cpu_default=MASK_EXPLICIT_RELOCS
4753 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4756 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4757 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4758 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4759 [Define if the assembler understands -mno-shared.])])
4761 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4762 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4763 [.gnu_attribute 4,1],,
4764 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4765 [Define if your assembler supports .gnu_attribute.])])
4767 gcc_GAS_CHECK_FEATURE([.module support],
4768 gcc_cv_as_mips_dot_module,,[-32],
4771 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4772 [Define if your assembler supports .module.])])
4773 if test x$gcc_cv_as_mips_dot_module = xno \
4774 && test x$with_fp_32 != x; then
4776 [Requesting --with-fp-32= requires assembler support for .module.])
4779 gcc_GAS_CHECK_FEATURE([.micromips support],
4780 gcc_cv_as_micromips_support,,[--fatal-warnings],
4782 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4783 [Define if your assembler supports the .set micromips directive])])
4785 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4786 gcc_cv_as_mips_dtprelword, [2,18,0],,
4787 [.section .tdata,"awT",@progbits
4791 .dtprelword x+0x8000],,
4792 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4793 [Define if your assembler supports .dtprelword.])])
4795 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4796 gcc_cv_as_mips_dspr1_mult,,,
4806 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4807 [Define if your assembler supports DSPR1 mult.])])
4809 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4810 gcc_cv_as_ld_jalr_reloc=no
4811 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4812 if test $in_tree_ld = yes ; then
4813 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4814 && test $in_tree_ld_is_elf = yes; then
4815 gcc_cv_as_ld_jalr_reloc=yes
4817 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4818 echo ' .ent x' > conftest.s
4819 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4820 echo ' lw $25,%call16(y)($28)' >> conftest.s
4821 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4822 echo '1: jalr $25' >> conftest.s
4823 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4824 echo '1: jalr $25' >> conftest.s
4825 echo ' .end x' >> conftest.s
4826 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4827 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4828 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4829 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4830 gcc_cv_as_ld_jalr_reloc=yes
4836 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4837 if test x$target_cpu_default = x; then
4838 target_cpu_default=MASK_RELAX_PIC_CALLS
4840 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4843 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4845 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4846 [gcc_cv_ld_mips_personality_relaxation],
4847 [gcc_cv_ld_mips_personality_relaxation=no
4848 if test $in_tree_ld = yes ; then
4849 if test "$gcc_cv_gld_major_version" -eq 2 \
4850 -a "$gcc_cv_gld_minor_version" -ge 21 \
4851 -o "$gcc_cv_gld_major_version" -gt 2; then
4852 gcc_cv_ld_mips_personality_relaxation=yes
4854 elif test x$gcc_cv_as != x \
4855 -a x$gcc_cv_ld != x \
4856 -a x$gcc_cv_readelf != x ; then
4857 cat > conftest.s <<EOF
4859 .cfi_personality 0x80,indirect_ptr
4866 .section .data,"aw",@progbits
4870 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4871 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4872 if $gcc_cv_readelf -d conftest 2>&1 \
4873 | grep TEXTREL > /dev/null 2>&1; then
4875 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4876 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4879 gcc_cv_ld_mips_personality_relaxation=yes
4883 rm -f conftest.s conftest.o conftest])
4884 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4885 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4886 [Define if your linker can relax absolute .eh_frame personality
4887 pointers into PC-relative form.])
4890 gcc_GAS_CHECK_FEATURE([-mnan= support],
4891 gcc_cv_as_mips_nan,,
4893 [AC_DEFINE(HAVE_AS_NAN, 1,
4894 [Define if the assembler understands -mnan=.])])
4895 if test x$gcc_cv_as_mips_nan = xno \
4896 && test x$with_nan != x; then
4898 [Requesting --with-nan= requires assembler support for -mnan=])
4902 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4903 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4904 [.gnu_attribute 8,1],,
4905 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4906 [Define if your assembler supports .gnu_attribute.])])
4907 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4908 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4913 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4914 [Define if your assembler supports .machine and .machinemode.])])
4915 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4916 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4917 [ .machine z13+vx ],,
4918 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4919 [Define if your assembler supports architecture modifiers.])])
4923 # Mips and HP-UX need the GNU assembler.
4924 # Linux on IA64 might be able to use the Intel assembler.
4927 mips*-*-* | *-*-hpux* )
4928 if test x$gas_flag = xyes \
4929 || test x"$host" != x"$build" \
4930 || test ! -x "$gcc_cv_as" \
4931 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4934 echo "*** This configuration requires the GNU assembler" >&2
4940 # ??? Not all targets support dwarf2 debug_line, even within a version
4941 # of gas. Moreover, we need to emit a valid instruction to trigger any
4942 # info to the output file. So, as supported targets are added to gas 2.11,
4943 # add some instruction here to (also) show we expect this might work.
4944 # ??? Once 2.11 is released, probably need to add first known working
4945 # version to the per-target configury.
4947 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4948 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4949 | tilegx | tilepro | visium | xstormy16 | xtensa)
4959 if test x"$insn" != x; then
4961 .file 1 \"conftest.s\"
4964 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4965 gcc_cv_as_dwarf2_debug_line,
4966 [elf,2,11,0],, [$conftest_s],
4967 [if test x$gcc_cv_objdump != x \
4968 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4969 | grep debug_line > /dev/null 2>&1; then
4970 gcc_cv_as_dwarf2_debug_line=yes
4973 # The .debug_line file table must be in the exact order that
4974 # we specified the files, since these indices are also used
4975 # by DW_AT_decl_file. Approximate this test by testing if
4976 # the assembler bitches if the same index is assigned twice.
4977 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4978 gcc_cv_as_dwarf2_file_buggy,,,
4982 if test $gcc_cv_as_dwarf2_debug_line = yes \
4983 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4984 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4985 [Define if your assembler supports dwarf2 .file/.loc directives,
4986 and preserves file table indices exactly as given.])
4988 if test $gcc_cv_as_leb128 = yes; then
4990 .file 1 \"conftest.s\"
4991 .loc 1 3 0 view .LVU1
4997 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4998 gcc_cv_as_dwarf2_debug_view,
4999 [elf,2,27,0],,[$conftest_s],,
5000 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
5001 [Define if your assembler supports views in dwarf2 .loc directives.])])
5005 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
5006 gcc_cv_as_gdwarf2_flag,
5007 [elf,2,11,0], [--gdwarf2], [$insn],,
5008 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5009 [Define if your assembler supports the --gdwarf2 option.])])
5011 gcc_GAS_CHECK_FEATURE([--gstabs option],
5012 gcc_cv_as_gstabs_flag,
5013 [elf,2,11,0], [--gstabs], [$insn],,
5014 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5015 [Define if your assembler supports the --gstabs option.])])
5017 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5018 gcc_cv_as_debug_prefix_map_flag,
5019 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5020 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5021 [Define if your assembler supports the --debug-prefix-map option.])])
5024 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5025 gcc_cv_as_compress_debug,,,,
5026 [# gas compiled without zlib cannot compress debug sections and warns
5027 # about it, but still exits successfully. So check for this, too.
5028 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5030 gcc_cv_as_compress_debug=0
5031 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5032 # defaulting to the ELF gABI format.
5033 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5035 gcc_cv_as_compress_debug=2
5036 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5037 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5038 # Before binutils 2.26, gas only supported --compress-debug-options and
5039 # emitted the traditional GNU format.
5040 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5042 gcc_cv_as_compress_debug=1
5043 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5044 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5046 gcc_cv_as_compress_debug=0
5048 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5049 [Define to the level of your assembler's compressed debug section support.])
5050 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5051 [Define to the assembler option to enable compressed debug sections.])
5052 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5053 [Define to the assembler option to disable compressed debug sections.])
5055 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5058 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5059 [Define if your assembler supports .lcomm with an alignment field.])])
5061 if test x$with_sysroot = x && test x$host = x$target \
5062 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5063 && test "$prefix" != "NONE"; then
5064 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5065 [Define to PREFIX/include if cpp should also search that directory.])
5068 # Determine the version of glibc, if any, used on the target.
5069 AC_MSG_CHECKING([for target glibc version])
5070 AC_ARG_WITH([glibc-version],
5071 [AS_HELP_STRING([--with-glibc-version=M.N],
5072 [assume GCC used with glibc version M.N or later])], [
5073 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5074 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5075 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5077 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5079 glibc_version_major=0
5080 glibc_version_minor=0
5081 [if test -f $target_header_dir/features.h \
5082 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5083 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5084 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5085 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5087 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5088 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5089 [GNU C Library major version number used on the target, or 0.])
5090 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5091 [GNU C Library minor version number used on the target, or 0.])
5093 AC_ARG_ENABLE(gnu-unique-object,
5094 [AS_HELP_STRING([--enable-gnu-unique-object],
5095 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5096 [case $enable_gnu_unique_object in
5098 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5099 Valid choices are 'yes' and 'no'.]) ;;
5101 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5103 [.type foo, '$target_type_format_char'gnu_unique_object],,
5104 # We need to unquote above to to use the definition from config.gcc.
5105 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5106 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5108 if test x$enable_gnu_unique_object = xyes; then
5109 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5110 [Define if your assembler supports @gnu_unique_object.])
5113 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5114 [gcc_cv_as_line_zero],
5115 [gcc_cv_as_line_zero=no
5116 if test $in_tree_gas = yes; then
5117 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5118 elif test "x$gcc_cv_as" != x; then
5119 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5120 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5121 test "x`cat conftest.out`" = x
5123 gcc_cv_as_line_zero=yes
5125 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5126 cat conftest.s >&AS_MESSAGE_LOG_FD
5127 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5128 cat conftest.out >&AS_MESSAGE_LOG_FD
5130 rm -f conftest.o conftest.s conftest.out
5132 if test "x$gcc_cv_as_line_zero" = xyes; then
5133 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5134 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5137 AC_MSG_CHECKING(support for thin archives)
5138 thin_archive_support=no
5139 echo 'int main (void) { return 0; }' > conftest.c
5140 if ($AR --version | sed 1q | grep "GNU ar" \
5141 && $CC $CFLAGS -c conftest.c \
5142 && $AR rcT conftest.a conftest.o \
5143 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5144 thin_archive_support=yes
5146 rm -f conftest.c conftest.o conftest.a conftest
5147 AC_MSG_RESULT($thin_archive_support)
5148 AC_SUBST(thin_archive_support)
5150 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5151 gcc_cv_ld_eh_frame_hdr=no
5152 if test $in_tree_ld = yes ; then
5153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5154 && test $in_tree_ld_is_elf = yes; then
5155 gcc_cv_ld_eh_frame_hdr=yes
5157 elif test x$gcc_cv_ld != x; then
5158 if echo "$ld_ver" | grep GNU > /dev/null; then
5159 # Check if linker supports --eh-frame-hdr option
5160 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5161 gcc_cv_ld_eh_frame_hdr=yes
5166 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5167 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5168 gcc_cv_ld_eh_frame_hdr=yes
5174 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5175 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5176 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5177 [Define if your linker supports .eh_frame_hdr.])
5179 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5181 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5182 gcc_cv_ld_eh_frame_ciev3=no
5183 if test $in_tree_ld = yes ; then
5184 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5185 && test $in_tree_ld_is_elf = yes; then
5186 gcc_cv_ld_eh_frame_ciev3=yes
5188 elif test x$gcc_cv_ld != x; then
5189 if echo "$ld_ver" | grep GNU > /dev/null; then
5190 gcc_cv_ld_eh_frame_ciev3=yes
5191 if test 0"$ld_date" -lt 20040513; then
5192 if test -n "$ld_date"; then
5193 # If there was date string, but was earlier than 2004-05-13, fail
5194 gcc_cv_ld_eh_frame_ciev3=no
5195 elif test "$ld_vers_major" -lt 2; then
5196 gcc_cv_ld_eh_frame_ciev3=no
5197 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5198 gcc_cv_ld_eh_frame_ciev3=no
5204 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5205 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5206 gcc_cv_ld_eh_frame_ciev3=yes
5212 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5213 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5214 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5215 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5217 AC_MSG_CHECKING(linker position independent executable support)
5219 if test $in_tree_ld = yes ; then
5221 # Full PIE support on Solaris was only introduced in gld 2.26.
5222 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5223 *) gcc_gld_pie_min_version=15 ;;
5225 if test "$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 \
5226 && test $in_tree_ld_is_elf = yes; then
5229 elif test x$gcc_cv_ld != x; then
5230 # Check if linker supports -pie option
5231 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5235 if echo "$ld_ver" | grep GNU > /dev/null \
5236 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5243 *-*-solaris2.1[[1-9]]*)
5244 # Solaris 11.3 added PIE support.
5245 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5252 if test x"$gcc_cv_ld_pie" = xyes; then
5253 AC_DEFINE(HAVE_LD_PIE, 1,
5254 [Define if your linker supports PIE option.])
5256 AC_MSG_RESULT($gcc_cv_ld_pie)
5258 AC_MSG_CHECKING(linker PIE support with copy reloc)
5259 gcc_cv_ld_pie_copyreloc=no
5260 if test $gcc_cv_ld_pie = yes ; then
5261 if test $in_tree_ld = yes ; then
5262 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5263 gcc_cv_ld_pie_copyreloc=yes
5265 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5266 # Check if linker supports -pie option with copy reloc
5268 i?86-*-linux* | x86_64-*-linux*)
5269 cat > conftest1.s <<EOF
5272 .type a_glob, @object
5277 cat > conftest2.s <<EOF
5280 .type main, @function
5282 movl %eax, a_glob(%rip)
5285 .section .data.rel,"aw",@progbits
5290 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5291 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5292 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5293 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5294 gcc_cv_ld_pie_copyreloc=yes
5296 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5301 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5302 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5303 [Define 0/1 if your linker supports -pie option with copy reloc.])
5304 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5306 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5307 gcc_cv_ld_eh_gc_sections=no
5308 if test $in_tree_ld = yes ; then
5309 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5310 && test $in_tree_ld_is_elf = yes; then
5311 gcc_cv_ld_eh_gc_sections=yes
5313 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5314 cat > conftest.s <<EOF
5317 .type _start, @function
5320 .size _start, .-_start
5321 .section .text.foo,"ax",@progbits
5322 .type foo, @function
5326 .section .gcc_except_table.foo,"a",@progbits
5329 .section .eh_frame,"a",@progbits
5332 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5333 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5334 | grep "gc-sections option ignored" > /dev/null; then
5335 gcc_cv_ld_eh_gc_sections=no
5336 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5337 | grep gcc_except_table > /dev/null; then
5338 gcc_cv_ld_eh_gc_sections=yes
5339 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5340 if test x$gcc_cv_as_comdat_group != xyes; then
5341 gcc_cv_ld_eh_gc_sections=no
5342 cat > conftest.s <<EOF
5345 .type _start, @function
5348 .size _start, .-_start
5349 .section .gnu.linkonce.t.foo,"ax",@progbits
5350 .type foo, @function
5354 .section .gcc_except_table.foo,"a",@progbits
5357 .section .eh_frame,"a",@progbits
5360 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5361 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5362 | grep "gc-sections option ignored" > /dev/null; then
5363 gcc_cv_ld_eh_gc_sections=no
5364 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5365 | grep gcc_except_table > /dev/null; then
5366 gcc_cv_ld_eh_gc_sections=yes
5372 rm -f conftest.s conftest.o conftest
5376 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5377 gcc_cv_ld_eh_gc_sections=no
5380 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5381 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5382 [Define if your linker supports garbage collection of
5383 sections in presence of EH frames.])
5385 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5387 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5388 gcc_cv_ld_eh_gc_sections_bug=no
5389 if test $in_tree_ld = yes ; then
5390 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5391 && test $in_tree_ld_is_elf = yes; then
5392 gcc_cv_ld_eh_gc_sections_bug=yes
5394 elif test x$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
5395 gcc_cv_ld_eh_gc_sections_bug=yes
5396 cat > conftest.s <<EOF
5399 .type _start, @function
5402 .size _start, .-_start
5403 .section .text.startup.foo,"ax",@progbits
5404 .type foo, @function
5408 .section .gcc_except_table.foo,"a",@progbits
5411 .section .eh_frame,"a",@progbits
5414 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5415 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5416 | grep "gc-sections option ignored" > /dev/null; then
5418 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5419 | grep gcc_except_table > /dev/null; then
5420 gcc_cv_ld_eh_gc_sections_bug=no
5423 rm -f conftest.s conftest.o conftest
5425 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5426 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5427 [Define if your linker has buggy garbage collection of
5428 sections support when .text.startup.foo like sections are used.])
5430 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5432 AC_MSG_CHECKING(linker for compressed debug sections)
5433 # gold/gld support compressed debug sections since binutils 2.19/2.21
5434 # In binutils 2.26, gld gained support for the ELF gABI format.
5435 if test $in_tree_ld = yes ; then
5436 gcc_cv_ld_compress_debug=0
5437 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5438 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5439 gcc_cv_ld_compress_debug=2
5440 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5441 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5442 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5443 gcc_cv_ld_compress_debug=3
5444 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5445 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5446 && test $in_tree_ld_is_elf = yes; then
5447 gcc_cv_ld_compress_debug=1
5449 elif echo "$ld_ver" | grep GNU > /dev/null; then
5450 if test "$ld_vers_major" -lt 2 \
5451 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5452 gcc_cv_ld_compress_debug=0
5453 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5454 gcc_cv_ld_compress_debug=1
5456 gcc_cv_ld_compress_debug=3
5457 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5459 if test $ld_is_gold = yes; then
5460 gcc_cv_ld_compress_debug=2
5461 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5467 # Introduced in Solaris 11.2.
5468 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5469 gcc_cv_ld_compress_debug=3
5470 gcc_cv_ld_compress_debug_option="-z compress-sections"
5472 gcc_cv_ld_compress_debug=0
5476 # Assume linkers other than GNU ld don't support compessed debug
5478 gcc_cv_ld_compress_debug=0
5483 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5484 [Define to the level of your linker's compressed debug section support.])
5485 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5486 [Define to the linker option to enable compressed debug sections.])
5487 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5489 if test x"$ld64_flag" = x"yes"; then
5491 # Set defaults for possibly untestable items.
5492 gcc_cv_ld64_export_dynamic=0
5494 if test "$build" = "$host"; then
5500 # On Darwin, because of FAT library support, it is often possible to execute
5501 # exes from compatible archs even when the host differs from the build system.
5502 case "$build","$host" in
5503 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5508 # If the configurer specified a minimum ld64 version to be supported, then use
5509 # that to determine feature support.
5510 if test x"${gcc_cv_ld64_version}" != x; then
5511 AC_MSG_CHECKING(ld64 specified version)
5512 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5513 AC_MSG_RESULT($gcc_cv_ld64_major)
5514 if test "$gcc_cv_ld64_major" -ge 236; then
5515 gcc_cv_ld64_export_dynamic=1
5517 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5518 # If the version was not specified, try to find it.
5519 AC_MSG_CHECKING(linker version)
5520 if test x"${gcc_cv_ld64_version}" = x; then
5521 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5523 AC_MSG_RESULT($gcc_cv_ld64_version)
5525 AC_MSG_CHECKING(linker for -export_dynamic support)
5526 gcc_cv_ld64_export_dynamic=1
5527 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5528 gcc_cv_ld64_export_dynamic=0
5530 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5533 if test x"${gcc_cv_ld64_version}" != x; then
5534 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5535 [Define to ld64 version.])
5538 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5539 [Define to 1 if ld64 supports '-export_dynamic'.])
5546 AC_CACHE_CHECK(linker --as-needed support,
5547 gcc_cv_ld_as_needed,
5548 [gcc_cv_ld_as_needed=no
5549 gcc_cv_ld_as_needed_option='--as-needed'
5550 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5551 if test $in_tree_ld = yes ; then
5552 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5553 && test $in_tree_ld_is_elf = yes; then
5554 gcc_cv_ld_as_needed=yes
5555 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5556 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5557 gcc_cv_ld_no_as_needed_option='--pop-state'
5560 elif test x$gcc_cv_ld != x; then
5561 # Check if linker supports --as-needed and --no-as-needed options
5562 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5563 gcc_cv_ld_as_needed=yes
5564 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5565 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5566 && echo "$ld_ver" | grep GNU > /dev/null \
5567 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5568 # Use these options only when both ld.bfd and ld.gold support
5569 # --push-state/--pop-state, which unfortunately wasn't added
5571 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5572 gcc_cv_ld_no_as_needed_option='--pop-state'
5575 case "$target:$gnu_ld" in
5577 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5579 gcc_cv_ld_as_needed=yes
5580 gcc_cv_ld_as_needed_option="-z ignore"
5581 gcc_cv_ld_no_as_needed_option="-z record"
5585 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5586 # dl_iterate_phdr, i.e. since Solaris 11.
5588 *-*-solaris2.1[[1-9]]*)
5590 i?86-*-* | x86_64-*-*)
5591 if echo "$ld_ver" | grep GNU > /dev/null; then
5592 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5593 gcc_cv_ld_as_needed=no
5599 gcc_cv_ld_as_needed=no
5603 if test x"$gcc_cv_ld_as_needed" = xyes; then
5604 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5605 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5606 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5607 [Define to the linker option to ignore unused dependencies.])
5608 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5609 [Define to the linker option to keep unused dependencies.])
5612 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5613 saved_LDFLAGS="$LDFLAGS"
5614 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5615 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5616 AC_LINK_IFELSE([int main(void) {return 0;}],
5617 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5619 LDFLAGS="$saved_LDFLAGS"
5620 if test "x$gcc_cv_ld_clearcap" = xyes; then
5621 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5622 [Define if the linker supports clearing hardware capabilities via mapfile.])
5623 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5625 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5631 emul_name="-melf32lppc"
5634 emul_name="-melf32ppc"
5637 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5639 [gcc_cv_ld_ppc_attr=no
5640 if test x"$ld_is_gold" = xyes; then
5641 gcc_cv_ld_ppc_attr=yes
5642 elif test $in_tree_ld = yes ; then
5643 if test "$gcc_cv_gld_major_version" -eq 2 \
5644 -a "$gcc_cv_gld_minor_version" -ge 28 \
5645 -o "$gcc_cv_gld_major_version" -gt 2; then
5646 gcc_cv_ld_ppc_attr=yes
5648 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5649 # check that merging the long double .gnu_attribute doesn't warn
5650 cat > conftest1.s <<EOF
5653 cat > conftest2.s <<EOF
5656 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5657 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5658 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5659 && test ! -s conftest.err; then
5660 gcc_cv_ld_ppc_attr=yes
5662 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5665 if test x$gcc_cv_ld_ppc_attr = xyes; then
5666 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5667 [Define if your PowerPC linker has .gnu.attributes long double support.])
5672 case "$target:$tm_file" in
5673 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5676 emul_name="-melf64lppc"
5679 emul_name="-melf64ppc"
5682 emul_name="-melf64ppc_fbsd"
5685 AC_CACHE_CHECK(linker support for omitting dot symbols,
5686 gcc_cv_ld_no_dot_syms,
5687 [gcc_cv_ld_no_dot_syms=no
5688 if test x"$ld_is_gold" = xyes; then
5689 gcc_cv_ld_no_dot_syms=yes
5690 elif test $in_tree_ld = yes ; then
5691 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5692 gcc_cv_ld_no_dot_syms=yes
5694 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5695 cat > conftest1.s <<EOF
5699 cat > conftest2.s <<EOF
5700 .section ".opd","aw"
5705 .quad .LEfoo,.TOC.@tocbase,0
5711 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5712 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5713 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5714 gcc_cv_ld_no_dot_syms=yes
5716 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5719 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5720 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5721 [Define if your PowerPC64 linker only needs function descriptor syms.])
5724 AC_CACHE_CHECK(linker large toc support,
5725 gcc_cv_ld_large_toc,
5726 [gcc_cv_ld_large_toc=no
5727 if test x"$ld_is_gold" = xyes; then
5728 gcc_cv_ld_large_toc=yes
5729 elif test $in_tree_ld = yes ; then
5730 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5731 gcc_cv_ld_large_toc=yes
5733 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5734 cat > conftest.s <<EOF
5735 .section ".tbss","awT",@nobits
5741 addis 9,13,ie0@got@tprel@ha
5742 ld 9,ie0@got@tprel@l(9)
5744 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5745 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5746 gcc_cv_ld_large_toc=yes
5748 rm -f conftest conftest.o conftest.s
5751 if test x"$gcc_cv_ld_large_toc" = xyes; then
5752 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5753 [Define if your PowerPC64 linker supports a large TOC.])
5756 AC_CACHE_CHECK(linker toc pointer alignment,
5757 gcc_cv_ld_toc_align,
5758 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5759 cat > conftest.s <<EOF
5764 .section .data.rel.ro,"aw",@progbits
5769 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5770 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5771 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5773 rm -f conftest conftest.o conftest.s
5776 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5777 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5778 [Define to .TOC. alignment forced by your linker.])
5785 AC_CACHE_CHECK(linker large toc support,
5786 gcc_cv_ld_large_toc,
5787 [gcc_cv_ld_large_toc=no
5788 if test x$gcc_cv_as != x ; then
5789 cat > conftest.s <<EOF
5799 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5800 gcc_cv_ld_large_toc=yes
5802 rm -f conftest conftest.o conftest.s
5805 if test x"$gcc_cv_ld_large_toc" = xyes; then
5806 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5807 [Define if your PowerPC64 linker supports a large TOC.])
5812 AC_CACHE_CHECK(linker --build-id support,
5814 [gcc_cv_ld_buildid=no
5815 if test $in_tree_ld = yes ; then
5816 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5817 "$gcc_cv_gld_minor_version" -ge 18 -o \
5818 "$gcc_cv_gld_major_version" -gt 2 \
5819 && test $in_tree_ld_is_elf = yes; then
5820 gcc_cv_ld_buildid=yes
5822 elif test x$gcc_cv_ld != x; then
5823 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5824 gcc_cv_ld_buildid=yes
5827 if test x"$gcc_cv_ld_buildid" = xyes; then
5828 AC_DEFINE(HAVE_LD_BUILDID, 1,
5829 [Define if your linker supports --build-id.])
5832 AC_ARG_ENABLE(linker-build-id,
5833 [AS_HELP_STRING([--enable-linker-build-id],
5834 [compiler will always pass --build-id to linker])],
5836 enable_linker_build_id=no)
5838 if test x"$enable_linker_build_id" = xyes; then
5839 if test x"$gcc_cv_ld_buildid" = xyes; then
5840 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5841 [Define if gcc should always pass --build-id to linker.])
5843 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5847 # In binutils 2.21, GNU ld gained support for new emulations fully
5848 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5849 AC_CACHE_CHECK(linker *_sol2 emulation support,
5850 gcc_cv_ld_sol2_emulation,
5851 [gcc_cv_ld_sol2_emulation=no
5852 if test $in_tree_ld = yes ; then
5853 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5854 "$gcc_cv_gld_minor_version" -ge 21 -o \
5855 "$gcc_cv_gld_major_version" -gt 2 \
5856 && test $in_tree_ld_is_elf = yes; then
5857 gcc_cv_ld_sol2_emulation=yes
5859 elif test x$gcc_cv_ld != x; then
5860 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5861 grep _sol2 > /dev/null; then
5862 gcc_cv_ld_sol2_emulation=yes
5865 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5866 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5867 [Define if your linker supports the *_sol2 emulations.])
5870 AC_CACHE_CHECK(linker --sysroot support,
5872 [gcc_cv_ld_sysroot=no
5873 if test $in_tree_ld = yes ; then
5874 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5875 gcc_cv_ld_sysroot=yes
5877 elif test x$gcc_cv_ld != x; then
5878 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5879 gcc_cv_ld_sysroot=yes
5882 if test x"$gcc_cv_ld_sysroot" = xyes; then
5883 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5884 [Define if your linker supports --sysroot.])
5889 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5890 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5891 gcc_cv_solaris_crts,
5892 [gcc_cv_solaris_crts=no
5893 if test x$host != x$target; then
5894 if test "x$with_sysroot" = xyes; then
5895 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5897 target_sysroot="${with_sysroot}"
5900 target_libdir="$target_sysroot/usr/lib"
5901 # At the time they were added, gcrt1.o became a symlink for backwards
5902 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5904 i?86-*-solaris2* | x86_64-*-solaris2*)
5905 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5908 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5913 if test x$gcc_cv_solaris_crts = xyes; then
5914 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5915 [Define if the system-provided CRTs are present on Solaris.])
5918 AC_ARG_ENABLE(libssp,
5919 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5920 [case "${enableval}" in
5924 AC_MSG_ERROR([unknown libssp setting $enableval])
5928 # Test for stack protector support in target C library.
5929 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5930 gcc_cv_libc_provides_ssp,
5931 [gcc_cv_libc_provides_ssp=no
5932 if test "x$enable_libssp" = "xno"; then
5933 gcc_cv_libc_provides_ssp=yes
5934 elif test "x$enable_libssp" = "xyes"; then
5935 gcc_cv_libc_provides_ssp=no
5939 # All versions of musl provide stack protector
5940 gcc_cv_libc_provides_ssp=yes;;
5941 *-*-linux* | *-*-kfreebsd*-gnu)
5942 # glibc 2.4 and later provides __stack_chk_fail and
5943 # either __stack_chk_guard, or TLS access to stack guard canary.
5944 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5945 [if test -f $target_header_dir/features.h \
5946 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5947 $target_header_dir/features.h > /dev/null; then
5948 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5949 $target_header_dir/features.h > /dev/null && \
5950 test -f $target_header_dir/bits/uClibc_config.h && \
5951 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5952 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5953 gcc_cv_libc_provides_ssp=yes
5955 # all versions of Bionic support stack protector
5956 elif test -f $target_header_dir/sys/cdefs.h \
5957 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5958 $target_header_dir/sys/cdefs.h > /dev/null; then
5959 gcc_cv_libc_provides_ssp=yes
5963 # Avoid complicated tests (see
5964 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5965 # simply assert that glibc does provide this, which is true for all
5966 # realistically usable GNU/Hurd configurations.
5967 # All supported versions of musl provide it as well
5968 gcc_cv_libc_provides_ssp=yes;;
5969 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5970 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5971 [echo "no __stack_chk_fail on this target"])
5973 *) gcc_cv_libc_provides_ssp=no ;;
5977 if test x$gcc_cv_libc_provides_ssp = xyes; then
5978 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5979 [Define if your target C library provides stack protector support])
5982 # Check whether --enable-default-ssp was given.
5983 AC_ARG_ENABLE(default-ssp,
5984 [AS_HELP_STRING([--enable-default-ssp],
5985 [enable Stack Smashing Protection as default])],[
5986 if test x$gcc_cv_libc_provides_ssp = xyes; then
5988 ia64*-*-*) enable_default_ssp=no ;;
5989 *) enable_default_ssp=$enableval ;;
5992 enable_default_ssp=no
5994 enable_default_ssp=no)
5995 if test x$enable_default_ssp = xyes ; then
5996 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5997 [Define if your target supports default stack protector and it is enabled.])
5999 AC_SUBST([enable_default_ssp])
6001 # Test for <sys/sdt.h> on the target.
6002 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
6003 AC_MSG_CHECKING(sys/sdt.h in the target C library)
6005 if test -f $target_header_dir/sys/sdt.h; then
6007 AC_DEFINE(HAVE_SYS_SDT_H, 1,
6008 [Define if your target C library provides sys/sdt.h])
6010 AC_MSG_RESULT($have_sys_sdt_h)
6012 # Check if TFmode long double should be used by default or not.
6013 # Some glibc targets used DFmode long double, but with glibc 2.4
6014 # and later they can use TFmode.
6016 powerpc*-*-linux* | \
6020 AC_ARG_WITH(long-double-128,
6021 [AS_HELP_STRING([--with-long-double-128],
6022 [use 128-bit long double by default])],
6023 gcc_cv_target_ldbl128="$with_long_double_128",
6024 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6025 [gcc_cv_target_ldbl128=no
6026 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6027 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6028 && gcc_cv_target_ldbl128=yes
6032 if test x$gcc_cv_target_ldbl128 = xyes; then
6033 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6034 [Define if TFmode long double should be the default])
6037 # Check if TFmode long double target should use the IBM extended double or IEEE
6038 # 128-bit floating point formats if long doubles are 128-bits long. The long
6039 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6040 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6042 AC_ARG_WITH([long-double-format],
6043 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6044 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6045 case "$target:$with_long_double_format" in
6046 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6049 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6050 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6052 power7 | power8 | power9 | power1*)
6056 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6057 supported if the default cpu is power7 or newer])
6058 with_long_double_format=""
6062 xpowerpc64*-*-linux*:*)
6063 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6064 with_long_double_format=""
6067 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6068 on 64-bit PowerPC VSX Linux systems])
6069 with_long_double_format=""
6074 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6075 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6076 gcc_cv_libc_provides_hwcap_in_tcb=no
6079 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6082 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6083 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6084 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6087 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6088 gcc_cv_target_dl_iterate_phdr=unknown
6090 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6091 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6092 # libdl there, both complicating its use and breaking compatibility
6093 # between Solaris 10 updates.
6094 *-*-solaris2.1[[1-9]]*)
6095 # <link.h> needs both a dl_iterate_phdr declaration and support for
6096 # compilation with largefile support.
6097 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6098 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6099 gcc_cv_target_dl_iterate_phdr=yes
6101 gcc_cv_target_dl_iterate_phdr=no
6104 *-*-dragonfly* | *-*-freebsd*)
6105 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6106 gcc_cv_target_dl_iterate_phdr=yes
6108 gcc_cv_target_dl_iterate_phdr=no
6112 gcc_cv_target_dl_iterate_phdr=yes
6115 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6116 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6117 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6118 [Define if your target C library provides the `dl_iterate_phdr' function.])
6120 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6122 # We no longer support different GC mechanisms. Emit an error if
6123 # the user configures with --with-gc.
6125 [AS_HELP_STRING([--with-gc={page,zone}],
6126 [this option is not supported anymore. It used to choose
6127 the garbage collection mechanism to use with the compiler])],
6128 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6131 # Libraries to use on the host. This will normally be set by the top
6132 # level Makefile. Here we simply capture the value for our Makefile.
6133 if test -z "${HOST_LIBS+set}"; then
6138 # Use the system's zlib library.
6141 dnl Very limited version of automake's enable-maintainer-mode
6143 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6144 dnl maintainer-mode is disabled by default
6145 AC_ARG_ENABLE(maintainer-mode,
6146 [AS_HELP_STRING([--enable-maintainer-mode],
6147 [enable make rules and dependencies not useful
6148 (and sometimes confusing) to the casual installer])],
6149 maintainer_mode=$enableval,
6152 AC_MSG_RESULT($maintainer_mode)
6154 if test "$maintainer_mode" = "yes"; then
6161 dnl Whether to prevent multiple front-ends from linking at the same time
6163 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6164 AC_ARG_ENABLE(link-mutex,
6165 [AS_HELP_STRING([--enable-link-mutex],
6166 [avoid linking multiple front-ends at once to avoid thrashing
6167 on the build machine])],
6168 do_link_mutex=$enableval,
6170 AC_MSG_RESULT($do_link_mutex)
6172 if test "$do_link_mutex" = "yes"; then
6177 AC_SUBST(DO_LINK_MUTEX)
6183 # Make empty files to contain the specs and options for each language.
6184 # Then add #include lines to for a compiler that has specs and/or options.
6190 # These (without "all_") are set in each config-lang.in.
6191 # `language' must be a single word so is spelled singularly.
6194 all_outputs='Makefile'
6195 # List of language makefile fragments.
6197 # Additional files for gengtype
6198 all_gtfiles="$target_gtfiles"
6200 # These are the languages that are set in --enable-languages,
6201 # and are available in the GCC tree.
6202 all_selected_languages=
6204 # Add the language fragments.
6205 # Languages are added via two mechanisms. Some information must be
6206 # recorded in makefile variables, these are defined in config-lang.in.
6207 # We accumulate them and plug them into the main Makefile.
6208 # The other mechanism is a set of hooks for each of the main targets
6209 # like `clean', `install', etc.
6211 language_hooks="Make-hooks"
6213 for lang in ${srcdir}/*/config-lang.in
6216 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6218 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6219 if test "x$lang_alias" = x
6221 echo "$lang doesn't set \$language." 1>&2
6224 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6225 subdirs="$subdirs $subdir"
6227 # $gcc_subdir is where the gcc integration files are to be found
6228 # for a language, both for internal compiler purposes (compiler
6229 # sources implementing front-end to GCC tree converters), and for
6230 # build infrastructure purposes (Make-lang.in, etc.)
6232 # This will be <subdir> (relative to $srcdir) if a line like
6233 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6234 # is found in <langdir>/config-lang.in, and will remain <langdir>
6237 # Except for the language alias (fetched above), the regular
6238 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6239 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6240 # only this and the language alias.
6242 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6243 if [ "$gcc_subdir" = "" ]; then
6244 gcc_subdir="$subdir"
6247 case ",$enable_languages," in
6249 all_selected_languages="$all_selected_languages $lang_alias"
6250 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6251 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6263 . ${srcdir}/$gcc_subdir/config-lang.in
6264 if test "x$language" = x
6266 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6271 case ",$enable_languages," in
6274 for i in $subdir_requires; do
6275 test -f "${srcdir}/$i/config-lang.in" && continue
6283 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6284 if test -f $srcdir/$gcc_subdir/lang.opt; then
6285 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6286 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6288 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6289 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6291 all_languages="$all_languages $language"
6292 all_compilers="$all_compilers $compilers"
6293 all_outputs="$all_outputs $outputs"
6294 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6295 case ",$enable_languages," in
6297 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6299 AC_SUBST(enable_lto)
6306 for language in $all_selected_languages
6308 check_languages="$check_languages check-$language"
6311 # We link each language in with a set of hooks, reached indirectly via
6312 # lang.${target}. Only do so for selected languages.
6316 target_list="all.cross start.encap rest.encap tags \
6317 install-common install-man install-info install-pdf install-html dvi \
6318 pdf html uninstall info man srcextra srcman srcinfo \
6319 mostlyclean clean distclean maintainer-clean install-plugin"
6321 for t in $target_list
6324 for lang in $all_selected_languages
6328 echo "lang.$t: $x" >> Make-hooks
6332 # Option include files
6335 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6336 option_includes="option-includes.mk"
6337 AC_SUBST_FILE(option_includes)
6345 echo "dir ." > .gdbinit
6346 echo "dir ${srcdir}" >> .gdbinit
6347 if test x$gdb_needs_out_file_path = xyes
6349 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6351 if test "x$subdirs" != x; then
6354 echo "dir ${srcdir}/$s" >> .gdbinit
6357 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6358 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6360 # Put a breakpoint on __asan_report_error to help with debugging buffer
6363 *-fsanitize=address*)
6364 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6368 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6369 AC_SUBST(gcc_tooldir)
6372 # Find a directory in which to install a shared libgcc.
6374 AC_ARG_ENABLE(version-specific-runtime-libs,
6375 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6376 [specify that runtime libraries should be
6377 installed in a compiler-specific directory])])
6379 # Substitute configuration variables
6382 AC_SUBST(all_compilers)
6383 AC_SUBST(all_gtfiles)
6384 AC_SUBST(all_lang_makefrags)
6385 AC_SUBST(all_languages)
6386 AC_SUBST(all_selected_languages)
6387 AC_SUBST(build_exeext)
6388 AC_SUBST(build_install_headers_dir)
6389 AC_SUBST(build_xm_file_list)
6390 AC_SUBST(build_xm_include_list)
6391 AC_SUBST(build_xm_defines)
6392 AC_SUBST(build_file_translate)
6393 AC_SUBST(check_languages)
6394 AC_SUBST(cpp_install_dir)
6395 AC_SUBST(xmake_file)
6396 AC_SUBST(tmake_file)
6397 AC_SUBST(TM_ENDIAN_CONFIG)
6398 AC_SUBST(TM_MULTILIB_CONFIG)
6399 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6400 AC_SUBST(extra_gcc_objs)
6401 AC_SUBST(user_headers_inc_next_pre)
6402 AC_SUBST(user_headers_inc_next_post)
6403 AC_SUBST(extra_headers_list)
6404 AC_SUBST(extra_objs)
6405 AC_SUBST(extra_programs)
6406 AC_SUBST(float_h_file)
6407 AC_SUBST(gcc_config_arguments)
6408 AC_SUBST(gcc_gxx_include_dir)
6409 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6410 AC_SUBST(host_exeext)
6411 AC_SUBST(host_xm_file_list)
6412 AC_SUBST(host_xm_include_list)
6413 AC_SUBST(host_xm_defines)
6414 AC_SUBST(out_host_hook_obj)
6416 AC_SUBST(lang_opt_files)
6417 AC_SUBST(lang_specs_files)
6418 AC_SUBST(lang_tree_files)
6419 AC_SUBST(local_prefix)
6421 AC_SUBST(objc_boehm_gc)
6423 AC_SUBST(out_object_file)
6424 AC_SUBST(common_out_file)
6425 AC_SUBST(common_out_object_file)
6426 AC_SUBST(tm_file_list)
6427 AC_SUBST(tm_include_list)
6428 AC_SUBST(tm_defines)
6429 AC_SUBST(tm_p_file_list)
6430 AC_SUBST(tm_p_include_list)
6431 AC_SUBST(xm_file_list)
6432 AC_SUBST(xm_include_list)
6433 AC_SUBST(xm_defines)
6434 AC_SUBST(use_gcc_stdint)
6435 AC_SUBST(c_target_objs)
6436 AC_SUBST(cxx_target_objs)
6437 AC_SUBST(fortran_target_objs)
6438 AC_SUBST(target_cpu_default)
6440 AC_SUBST_FILE(language_hooks)
6443 if test x${build} = x${host} ; then
6444 if test x${host} = x${target} ; then
6445 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6447 echo "Links are now set up to build a cross-compiler" 1>&2
6448 echo " from ${host} to ${target}." 1>&2
6451 if test x${host} = x${target} ; then
6452 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6453 echo " for ${target}." 1>&2
6455 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6456 echo " from ${host} to ${target}." 1>&2
6460 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6461 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6463 AC_ARG_VAR(ISLLIBS,[How to link isl])
6464 AC_ARG_VAR(ISLINC,[How to find isl include files])
6465 if test "x${ISLLIBS}" != "x" ; then
6466 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6470 AC_SUBST(pluginlibs)
6471 AC_SUBST(enable_plugin)
6472 if test x"$enable_plugin" = x"yes"; then
6473 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6477 # Enable --enable-host-shared
6478 AC_ARG_ENABLE(host-shared,
6479 [AS_HELP_STRING([--enable-host-shared],
6480 [build host code as shared libraries])],
6481 [PICFLAG=-fPIC], [PICFLAG=])
6482 AC_SUBST(enable_host_shared)
6486 AC_ARG_ENABLE(libquadmath-support,
6487 [AS_HELP_STRING([--disable-libquadmath-support],
6488 [disable libquadmath support for Fortran])],
6489 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6490 ENABLE_LIBQUADMATH_SUPPORT=yes)
6491 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6492 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6493 [Define to 1 to enable libquadmath support])
6497 # Specify what hash style to use by default.
6498 AC_ARG_WITH([linker-hash-style],
6499 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6500 [specify the linker hash style])],
6501 [case x"$withval" in
6503 LINKER_HASH_STYLE=sysv
6506 LINKER_HASH_STYLE=gnu
6509 LINKER_HASH_STYLE=both
6512 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6515 [LINKER_HASH_STYLE=''])
6516 if test x"${LINKER_HASH_STYLE}" != x; then
6517 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6518 [The linker hash style])
6521 # Specify what should be the default of -fdiagnostics-color option.
6522 AC_ARG_WITH([diagnostics-color],
6523 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6524 [specify the default of -fdiagnostics-color option
6525 auto-if-env stands for -fdiagnostics-color=auto if
6526 GCC_COLOR environment variable is present and
6527 -fdiagnostics-color=never otherwise])],
6528 [case x"$withval" in
6530 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6533 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6536 DIAGNOSTICS_COLOR_DEFAULT=-1
6539 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6542 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6545 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6546 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6547 [The default for -fdiagnostics-color option])
6549 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6550 # of jit/jit-playback.c.
6551 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6552 echo "gcc_driver_version: ${gcc_driver_version}"
6553 cat > gcc-driver-name.h <<EOF
6554 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6557 # Check whether --enable-default-pie was given.
6558 AC_ARG_ENABLE(default-pie,
6559 [AS_HELP_STRING([--enable-default-pie],
6560 [enable Position Independent Executable as default])],
6561 enable_default_pie=$enableval,
6562 enable_default_pie=no)
6563 if test x$enable_default_pie = xyes ; then
6564 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6565 [Define if your target supports default PIE and it is enabled.])
6567 AC_SUBST([enable_default_pie])
6569 # Check if -fno-PIE works.
6570 AC_CACHE_CHECK([for -fno-PIE option],
6572 [saved_CXXFLAGS="$CXXFLAGS"
6573 CXXFLAGS="$CXXFLAGS -fno-PIE"
6574 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6575 [gcc_cv_c_no_fpie=yes],
6576 [gcc_cv_c_no_fpie=no])
6577 CXXFLAGS="$saved_CXXFLAGS"])
6578 if test "$gcc_cv_c_no_fpie" = "yes"; then
6579 NO_PIE_CFLAGS="-fno-PIE"
6581 AC_SUBST([NO_PIE_CFLAGS])
6583 # Check if -no-pie works.
6584 AC_CACHE_CHECK([for -no-pie option],
6586 [saved_LDFLAGS="$LDFLAGS"
6587 LDFLAGS="$LDFLAGS -no-pie"
6588 AC_LINK_IFELSE([int main(void) {return 0;}],
6589 [gcc_cv_no_pie=yes],
6591 LDFLAGS="$saved_LDFLAGS"])
6592 if test "$gcc_cv_no_pie" = "yes"; then
6593 NO_PIE_FLAG="-no-pie"
6595 AC_SUBST([NO_PIE_FLAG])
6597 # Check linker supports '-z bndplt'
6598 ld_bndplt_support=no
6599 AC_MSG_CHECKING(linker -z bndplt option)
6600 if test x"$ld_is_gold" = xno; then
6601 if test $in_tree_ld = yes ; then
6602 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6603 ld_bndplt_support=yes
6605 elif test x$gcc_cv_ld != x; then
6606 # Check if linker supports -a bndplt option
6607 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6608 ld_bndplt_support=yes
6612 if test x"$ld_bndplt_support" = xyes; then
6613 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6614 [Define if your linker supports -z bndplt])
6616 AC_MSG_RESULT($ld_bndplt_support)
6618 # Check linker supports '--push-state'/'--pop-state'
6619 ld_pushpopstate_support=no
6620 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6621 if test x"$ld_is_gold" = xno; then
6622 if test $in_tree_ld = yes ; then
6623 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6624 ld_pushpopstate_support=yes
6626 elif test x$gcc_cv_ld != x; then
6627 # Check if linker supports --push-state/--pop-state options
6628 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6629 ld_pushpopstate_support=yes
6633 if test x"$ld_pushpopstate_support" = xyes; then
6634 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6635 [Define if your linker supports --push-state/--pop-state])
6637 AC_MSG_RESULT($ld_pushpopstate_support)
6639 # Configure the subdirectories
6640 # AC_CONFIG_SUBDIRS($subdirs)
6642 # Create the Makefile
6643 # and configure language subdirectories
6644 AC_CONFIG_FILES($all_outputs)
6646 AC_CONFIG_COMMANDS([default],
6648 case ${CONFIG_HEADERS} in
6649 *auto-host.h:config.in*)
6652 # Make sure all the subdirs exist.
6653 for d in $subdirs doc build common c-family
6655 test -d $d || mkdir $d
6658 [subdirs='$subdirs'])