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 discriminator support],
3150 gcc_cv_as_discriminator,
3154 .loc 1 1 0 discriminator 1],,
3155 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3156 [Define if your assembler supports the .loc discriminator sub-directive.])])
3158 # Thread-local storage - the check is heavily parameterized.
3167 .section ".tdata","awT",@progbits
3170 ldq $27,__tls_get_addr($29) !literal!1
3171 lda $16,foo($29) !tlsgd!1
3172 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3173 ldq $27,__tls_get_addr($29) !literal!2
3174 lda $16,foo($29) !tlsldm!2
3175 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3176 ldq $1,foo($29) !gotdtprel
3177 ldah $2,foo($29) !dtprelhi
3178 lda $3,foo($2) !dtprello
3179 lda $4,foo($29) !dtprel
3180 ldq $1,foo($29) !gottprel
3181 ldah $2,foo($29) !tprelhi
3182 lda $3,foo($2) !tprello
3183 lda $4,foo($29) !tprel'
3186 tls_as_opt=--fatal-warnings
3190 add_s r0,r0, @foo@tpoff'
3194 cris-*-*|crisv32-*-*)
3196 .section ".tdata","awT",@progbits
3203 tls_as_opt=--fatal-warnings
3207 .section ".tdata","awT",@progbits
3219 .section ".tdata","awT",@progbits
3223 addil LT%foo-$tls_gdidx$,gp
3224 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3227 addil LT%foo-$tls_ldidx$,gp
3229 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3230 addil LR%foo-$tls_dtpoff$,%ret0
3231 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3233 addil LT%foo-$tls_ieoff$,gp
3234 ldw RT%foo-$tls_ieoff$(%r1),%t2
3237 addil LR%foo-$tls_leoff$,%t1
3238 ldo RR%foo-$tls_leoff$(%r1),%t2'
3241 tls_as_opt=--fatal-warnings
3245 .section ".tdata","awT",%progbits
3256 i[34567]86-*-* | x86_64-*-*)
3258 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3265 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3267 .section .tdata,"awt",@progbits'
3272 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3273 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3277 .section ".tdata","awT",@progbits'
3281 tls_as_opt="--fatal-warnings"
3285 conftest_s="$conftest_s
3289 leal foo@tlsgd(,%ebx,1), %eax
3290 leal foo@tlsldm(%ebx), %eax
3291 leal foo@dtpoff(%eax), %edx
3292 movl foo@gottpoff(%ebx), %eax
3293 subl foo@gottpoff(%ebx), %eax
3294 addl foo@gotntpoff(%ebx), %eax
3295 movl foo@indntpoff, %eax
3296 movl \$foo@tpoff, %eax
3297 subl \$foo@tpoff, %eax
3298 leal foo@ntpoff(%ecx), %eax"
3301 if test x$on_solaris = xyes; then
3303 yes) tls_as_opt="$tls_as_opt --64" ;;
3304 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3307 conftest_s="$conftest_s
3311 leaq foo@tlsgd(%rip), %rdi
3312 leaq foo@tlsld(%rip), %rdi
3313 leaq foo@dtpoff(%rax), %rdx
3314 movq foo@gottpoff(%rip), %rax
3315 movq \$foo@tpoff, %rax"
3321 .section ".tdata","awT",@progbits
3324 addl r16 = @ltoff(@dtpmod(foo#)), gp
3325 addl r17 = @ltoff(@dtprel(foo#)), gp
3326 addl r18 = @ltoff(@tprel(foo#)), gp
3327 addl r19 = @dtprel(foo#), gp
3328 adds r21 = @dtprel(foo#), r13
3329 movl r23 = @dtprel(foo#)
3330 addl r20 = @tprel(foo#), gp
3331 adds r22 = @tprel(foo#), r13
3332 movl r24 = @tprel(foo#)'
3335 tls_as_opt=--fatal-warnings
3339 .section .tdata,"awT",@progbits
3343 addik r5,r20,x@TLSGD
3344 addik r5,r20,x@TLSLDM'
3347 tls_as_opt='--fatal-warnings'
3351 .section .tdata,"awT",@progbits
3355 addiu $4, $28, %tlsgd(x)
3356 addiu $4, $28, %tlsldm(x)
3357 lui $4, %dtprel_hi(x)
3358 addiu $4, $4, %dtprel_lo(x)
3359 lw $4, %gottprel(x)($28)
3360 lui $4, %tprel_hi(x)
3361 addiu $4, $4, %tprel_lo(x)'
3364 tls_as_opt='-32 --fatal-warnings'
3368 .section .tdata,"awT",@progbits
3373 move.l x@TLSGD(%a5),%a0
3374 move.l x@TLSLDM(%a5),%a0
3375 move.l x@TLSLDO(%a5),%a0
3376 move.l x@TLSIE(%a5),%a0
3377 move.l x@TLSLE(%a5),%a0'
3380 tls_as_opt='--fatal-warnings'
3384 .section ".tdata","awT",@progbits'
3387 tls_as_opt="--fatal-warnings"
3391 .section ".tdata","awT",%progbits
3395 add x0, x0, #:tlsgd_lo12:x
3400 tls_as_opt='--fatal-warnings'
3404 .extern __get_tpointer
3422 .section ".tdata","awT",@progbits
3430 addi 3,2,ld0@got@tlsgd
3436 addi 3,2,x1@got@tlsld
3442 addis 9,3,x2@dtprel@ha
3443 addi 9,9,x2@dtprel@l
3446 ld 9,x3@got@dtprel(2)
3452 tls_as_opt="-a64 --fatal-warnings"
3456 .section ".tdata","awT",@progbits
3464 addi 3,31,ld0@got@tlsgd
3466 addi 3,31,x1@got@tlsld
3469 addis 9,3,x2@dtprel@ha
3470 addi 9,9,x2@dtprel@l
3471 lwz 9,x3@got@tprel(31)
3474 addis 9,2,x2@tprel@ha
3475 addi 9,9,x2@tprel@l'
3478 tls_as_opt="-a32 --fatal-warnings"
3482 .section .tdata,"awT",@progbits
3486 call __tls_get_addr'
3489 tls_as_opt='--fatal-warnings'
3493 .section ".tdata","awT",@progbits
3502 l %r1,foo@GOTNTPOFF(%r12)
3503 l %r1,0(%r1):tls_load:foo
3504 bas %r14,0(%r1,%r13):tls_gdcall:foo
3505 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3508 tls_as_opt="-m31 --fatal-warnings"
3512 .section ".tdata","awT",@progbits
3520 lg %r1,foo@GOTNTPOFF(%r12)
3521 larl %r1,foo@INDNTPOFF
3522 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3523 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3526 tls_as_opt="-m64 -Aesame --fatal-warnings"
3528 sh-*-* | sh[123456789lbe]*-*-*)
3530 .section ".tdata","awT",@progbits
3540 tls_as_opt=--fatal-warnings
3544 sparc*-sun-solaris2.*)
3551 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3553 .section ".tdata",#alloc,#write,#tls'
3558 .section ".tdata","awT",@progbits'
3561 tls_as_opt="-32 --fatal-warnings"
3563 conftest_s="$conftest_s
3566 sethi %tgd_hi22(foo), %o0
3567 add %o0, %tgd_lo10(foo), %o1
3568 add %l7, %o1, %o0, %tgd_add(foo)
3569 call __tls_get_addr, %tgd_call(foo)
3570 sethi %tldm_hi22(foo), %l1
3571 add %l1, %tldm_lo10(foo), %l2
3572 add %l7, %l2, %o0, %tldm_add(foo)
3573 call __tls_get_addr, %tldm_call(foo)
3574 sethi %tldo_hix22(foo), %l3
3575 xor %l3, %tldo_lox10(foo), %l4
3576 add %o0, %l4, %l5, %tldo_add(foo)
3577 sethi %tie_hi22(foo), %o3
3578 add %o3, %tie_lo10(foo), %o3
3579 ld [%l7 + %o3], %o2, %tie_ld(foo)
3580 add %g7, %o2, %o4, %tie_add(foo)
3581 sethi %tle_hix22(foo), %l1
3582 xor %l1, %tle_lox10(foo), %o5
3583 ld [%g7 + %o5], %o1"
3587 .section ".tdata","awT",@progbits
3590 addli r0, zero, tls_gd(foo)
3591 auli r0, zero, tls_gd_ha16(foo)
3592 addli r0, r0, tls_gd_lo16(foo)
3594 addli r0, zero, tls_ie(foo)
3595 auli r0, r0, tls_ie_ha16(foo)
3596 addli r0, r0, tls_ie_lo16(foo)'
3599 tls_as_opt="--fatal-warnings"
3603 .section ".tdata","awT",@progbits
3606 shl16insli r0, zero, hw0_last_tls_gd(foo)
3607 shl16insli r0, zero, hw1_last_tls_gd(foo)
3608 shl16insli r0, r0, hw0_tls_gd(foo)
3610 shl16insli r0, zero, hw1_last_tls_ie(foo)
3611 shl16insli r0, r0, hw0_tls_ie(foo)'
3614 tls_as_opt="--fatal-warnings"
3618 .section ".tdata","awT",@progbits
3621 movi a8, foo@TLSFUNC
3622 movi a10, foo@TLSARG
3623 callx8.tls a8, foo@TLSCALL'
3630 if test "x$enable_tls" = xno ; then
3631 : # TLS explicitly disabled.
3632 elif test "x$enable_tls" = xyes ; then
3633 set_have_as_tls=yes # TLS explicitly enabled.
3634 elif test -z "$tls_first_major"; then
3635 : # If we don't have a check, assume no support.
3637 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3638 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3639 [set_have_as_tls=yes])
3641 if test $set_have_as_tls = yes ; then
3642 AC_DEFINE(HAVE_AS_TLS, 1,
3643 [Define if your assembler and linker support thread-local storage.])
3646 # Target-specific assembler checks.
3648 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3649 gcc_cv_ld_static_dynamic=no
3650 gcc_cv_ld_static_option='-Bstatic'
3651 gcc_cv_ld_dynamic_option='-Bdynamic'
3652 if test $in_tree_ld = yes ; then
3653 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3654 gcc_cv_ld_static_dynamic=yes
3656 elif test x$gcc_cv_ld != x; then
3657 # Check if linker supports -Bstatic/-Bdynamic option
3658 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3659 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3660 gcc_cv_ld_static_dynamic=yes
3663 # AIX ld uses -b flags
3664 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3665 gcc_cv_ld_static_dynamic=yes
3666 gcc_cv_ld_static_option="-bstatic"
3667 gcc_cv_ld_dynamic_option="-bdynamic"
3669 # HP-UX ld uses -a flags to select between shared and archive.
3671 if test x"$gnu_ld" = xno; then
3672 gcc_cv_ld_static_dynamic=yes
3673 gcc_cv_ld_static_option="-aarchive_shared"
3674 gcc_cv_ld_dynamic_option="-adefault"
3677 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3679 gcc_cv_ld_static_dynamic=yes
3684 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3685 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3686 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3687 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3688 [Define to the linker option to disable use of shared objects.])
3689 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3690 [Define to the linker option to enable use of shared objects.])
3692 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3694 AC_MSG_CHECKING(linker --version-script option)
3695 gcc_cv_ld_version_script=no
3696 ld_version_script_option=''
3697 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3698 gcc_cv_ld_version_script=yes
3699 ld_version_script_option='--version-script'
3700 elif test x$gcc_cv_ld != x; then
3702 # Solaris 2 ld always supports -M. It also supports a subset of
3703 # --version-script since Solaris 11.4, but requires
3704 # -z gnu-version-script-compat to activate.
3706 gcc_cv_ld_version_script=yes
3707 ld_version_script_option='-M'
3711 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3712 AC_MSG_RESULT($gcc_cv_ld_version_script)
3713 AC_SUBST(ld_version_script_option)
3715 AC_MSG_CHECKING(linker soname option)
3717 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3718 gcc_cv_ld_soname=yes
3719 ld_soname_option='-soname'
3720 elif test x$gcc_cv_ld != x; then
3723 gcc_cv_ld_soname=yes
3724 ld_soname_option='-install_name'
3726 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3727 # ld compatiblity since some Solaris 10 update.
3729 gcc_cv_ld_soname=yes
3730 ld_soname_option='-h'
3734 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3735 AC_MSG_RESULT($gcc_cv_ld_soname)
3736 AC_SUBST(ld_soname_option)
3738 if test x"$demangler_in_ld" = xyes; then
3739 AC_MSG_CHECKING(linker --demangle support)
3740 gcc_cv_ld_demangle=no
3741 if test $in_tree_ld = yes; then
3742 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3743 gcc_cv_ld_demangle=yes
3745 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3746 # Check if the GNU linker supports --demangle option
3747 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3748 gcc_cv_ld_demangle=yes
3751 if test x"$gcc_cv_ld_demangle" = xyes; then
3752 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3753 [Define if your linker supports --demangle option.])
3755 AC_MSG_RESULT($gcc_cv_ld_demangle)
3758 AC_MSG_CHECKING(linker plugin support)
3760 if test -f liblto_plugin.la; then
3761 save_ld_ver="$ld_ver"
3762 save_ld_vers_major="$ld_vers_major"
3763 save_ld_vers_minor="$ld_vers_minor"
3764 save_ld_is_gold="$ld_is_gold"
3768 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3770 # FIXME: ld_is_gold?
3771 ld_vers_major="$gcc_cv_gld_major_version"
3772 ld_vers_minor="$gcc_cv_gld_minor_version"
3774 # Determine plugin linker version.
3775 # FIXME: Partial duplicate from above, generalize.
3777 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3778 if echo "$ld_ver" | grep GNU > /dev/null; then
3779 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3781 ld_vers=`echo $ld_ver | sed -n \
3782 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3784 ld_vers=`echo $ld_ver | sed -n \
3785 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3787 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3788 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3793 # Determine plugin support.
3794 if echo "$ld_ver" | grep GNU > /dev/null; then
3795 # Require GNU ld or gold 2.21+ for plugin support by default.
3796 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3798 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3799 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3804 ld_ver="$save_ld_ver"
3805 ld_vers_major="$save_ld_vers_major"
3806 ld_vers_minor="$save_ld_vers_minor"
3807 ld_is_gold="$save_ld_is_gold"
3809 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3810 [Define to the level of your linker's plugin support.])
3811 AC_MSG_RESULT($gcc_cv_lto_plugin)
3813 # Target OS-specific assembler checks.
3815 case "$target_os" in
3817 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3818 gcc_cv_as_mmacosx_version_min,,
3819 [-mmacosx-version-min=10.1], [.text],,
3820 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3821 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3825 # Target CPU-specific assembler checks.
3829 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3830 [-mabi=lp64], [.text],,,)
3831 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3832 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3833 [Define if your assembler supports the -mabi option.])
3835 if test x$with_abi = xilp32; then
3836 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3837 Upgrade the Assembler.])
3839 if test x"$with_multilib_list" = xdefault; then
3840 TM_MULTILIB_CONFIG=lp64
3842 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3843 for aarch64_multilib in ${aarch64_multilibs}; do
3844 case ${aarch64_multilib} in
3846 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3847 Upgrade the Assembler.])
3855 # Check if we have binutils support for relocations types needed by -fpic
3856 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3859 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3860 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3861 [Define if your assembler supports relocs needed by -fpic.])])
3862 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3863 AC_ARG_ENABLE(fix-cortex-a53-835769,
3865 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3866 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3867 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3868 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3873 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3878 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3879 Valid choices are 'yes' and 'no'.])
3885 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3886 AC_ARG_ENABLE(fix-cortex-a53-843419,
3888 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3889 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3890 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3891 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3896 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3901 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3902 Valid choices are 'yes' and 'no'.])
3910 # All TARGET_ABI_OSF targets.
3911 alpha*-*-linux* | alpha*-*-*bsd*)
3912 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3913 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3916 extbl $3, $2, $3 !lituse_bytoff!1
3917 ldq $2, a($29) !literal!1
3918 ldq $4, b($29) !literal!2
3919 ldq_u $3, 0($2) !lituse_base!1
3920 ldq $27, f($29) !literal!5
3921 jsr $26, ($27), f !lituse_jsr!5
3922 ldah $29, 0($26) !gpdisp!3
3923 lda $0, c($29) !gprel
3924 ldah $1, d($29) !gprelhigh
3925 lda $1, d($1) !gprellow
3926 lda $29, 0($29) !gpdisp!3],,
3927 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3928 [Define if your assembler supports explicit relocations.])])
3929 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3930 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3933 ldq $27, a($29) !literal!1
3934 jsr $26, ($27), a !lituse_jsrdirect!1],,
3935 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3936 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3940 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3941 [--mlink-relax], [.text],,
3942 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3943 [Define if your avr assembler supports --mlink-relax option.])])
3945 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3947 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3948 [Define if your avr assembler supports -mrmw option.])])
3950 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
3951 gcc_cv_as_avr_mgccisr,,
3957 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
3958 [Define if your avr assembler supports -mgcc-isr option.])])
3960 # Check how default linker description file implements .rodata for
3961 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
3962 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
3963 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
3964 cat > conftest.s <<EOF
3965 .section .rodata,"a",@progbits
3967 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
3972 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
3973 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
3974 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
3975 if test -s conftest.nm
3977 if grep ' R xxvaryy' conftest.nm > /dev/null; then
3979 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
3980 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
3982 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
3983 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
3984 cat conftest.nm >&AS_MESSAGE_LOG_FD
3985 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
3986 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
3989 AC_MSG_RESULT(test failed)
3990 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
3991 cat conftest.s >&AS_MESSAGE_LOG_FD
3992 AC_MSG_WARN([[see `config.log' for details]])
3994 rm -f conftest.s conftest.o conftest.elf conftest.nm
3998 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3999 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4000 [-no-mul-bug-abort], [.text],,
4001 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4002 [Define if your assembler supports the -no-mul-bug-abort option.])])
4006 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
4007 [.register %g2, #scratch],,
4008 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
4009 [Define if your assembler supports .register.])])
4011 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4013 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4014 [Define if your assembler supports -relax option.])])
4016 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4017 gcc_cv_as_sparc_gotdata_op,,
4024 sethi %gdop_hix22(foo), %g1
4025 xor %g1, %gdop_lox10(foo), %g1
4026 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4027 [if test x$gcc_cv_ld != x \
4028 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4029 if test x$gcc_cv_objdump != x; then
4030 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4031 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4032 gcc_cv_as_sparc_gotdata_op=no
4034 gcc_cv_as_sparc_gotdata_op=yes
4039 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4040 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4042 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4043 gcc_cv_as_sparc_ua_pcrel,,
4051 .uaword %r_disp32(foo)],
4052 [if test x$gcc_cv_ld != x \
4053 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4054 gcc_cv_as_sparc_ua_pcrel=yes
4057 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4058 [Define if your assembler and linker support unaligned PC relative relocs.])
4060 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4061 gcc_cv_as_sparc_ua_pcrel_hidden,,
4066 .uaword %r_disp32(foo)
4067 .byte 0x32, 0x33, 0x34
4072 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4073 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4074 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4075 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4076 if $gcc_cv_objdump -R conftest 2> /dev/null \
4077 | grep 'DISP32' > /dev/null 2>&1; then
4080 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4084 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4085 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4086 ]) # unaligned pcrel relocs
4088 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4089 gcc_cv_as_sparc_offsetable_lo10,,
4092 or %g1, %lo(ab) + 12, %g1
4093 or %g1, %lo(ab + 12), %g1],
4094 [if test x$gcc_cv_objdump != x \
4095 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4096 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4097 gcc_cv_as_sparc_offsetable_lo10=yes
4099 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4100 [Define if your assembler supports offsetable %lo().])])
4102 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4103 gcc_cv_as_sparc_fmaf,,
4106 .register %g2, #scratch
4107 .register %g3, #scratch
4109 fmaddd %f0, %f2, %f4, %f6
4110 addxccc %g1, %g2, %g3
4111 fsrl32 %f2, %f4, %f8
4112 fnaddd %f10, %f12, %f14],,
4113 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4114 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4116 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4117 gcc_cv_as_sparc_sparc4,,
4120 .register %g2, #scratch
4121 .register %g3, #scratch
4124 1: cwbneg %g2, %g3, 1f
4127 aes_kexpand0 %f4, %f6, %f8
4128 des_round %f38, %f40, %f42, %f44
4129 camellia_f %f54, %f56, %f58, %f60
4130 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4131 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4132 [Define if your assembler supports SPARC4 instructions.])])
4134 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4135 gcc_cv_as_sparc_sparc5,,
4138 .register %g2, #scratch
4139 .register %g3, #scratch
4142 fpadd8 %f0, %f2, %f4],,
4143 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4144 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4146 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4147 gcc_cv_as_sparc_sparc6,,
4150 .register %g2, #scratch
4151 .register %g3, #scratch
4154 fpsll64x %f0, %f2, %f4],,
4155 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4156 [Define if your assembler supports SPARC6 instructions.])])
4158 gcc_GAS_CHECK_FEATURE([LEON instructions],
4159 gcc_cv_as_sparc_leon,,
4162 .register %g2, #scratch
4163 .register %g3, #scratch
4167 casa [[%g2]] 0xb, %g3, %g1],,
4168 [AC_DEFINE(HAVE_AS_LEON, 1,
4169 [Define if your assembler supports LEON instructions.])])
4173 i[34567]86-*-* | x86_64-*-*)
4177 # Full C++ conformance when using a shared libstdc++-v3 requires some
4178 # support from the Cygwin DLL, which in more recent versions exports
4179 # wrappers to aid in interposing and redirecting operators new, delete,
4180 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4181 # are configuring for a version of Cygwin that exports the wrappers.
4182 if test x$host = x$target && test x$host_cpu = xi686; then
4183 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4185 # Can't check presence of libc functions during cross-compile, so
4186 # we just have to assume we're building for an up-to-date target.
4187 gcc_ac_cygwin_dll_wrappers=yes
4189 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4190 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4191 [Define if you want to generate code by default that assumes that the
4192 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4195 cygwin* | pe | mingw32*)
4196 # Recent binutils allows the three-operand form of ".comm" on PE. This
4197 # definition is used unconditionally to initialise the default state of
4198 # the target option variable that governs usage of the feature.
4199 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4200 [2,19,52],,[.comm foo,1,32])
4201 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4202 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4203 [Define if your assembler supports specifying the alignment
4204 of objects allocated using the GAS .comm command.])
4205 # Used for DWARF 2 in PE
4206 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4207 gcc_cv_as_ix86_pe_secrel32,
4213 [if test x$gcc_cv_ld != x \
4214 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4215 gcc_cv_as_ix86_pe_secrel32=yes
4218 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4219 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4220 # Test if the assembler supports the extended form of the .section
4221 # directive that specifies section alignment. LTO support uses this,
4222 # but normally only after installation, so we warn but don't fail the
4223 # configure if LTO is enabled but the assembler does not support it.
4224 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4225 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4226 if test x$gcc_cv_as_section_has_align != xyes; then
4227 case ",$enable_languages," in
4229 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4236 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4237 [-xbrace_comment=no], [.text],,
4238 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4239 [Define if your assembler supports -xbrace_comment option.])])
4241 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4242 gcc_cv_as_ix86_filds,,,
4243 [filds (%ebp); fists (%ebp)],,
4244 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4245 [Define if your assembler uses filds and fists mnemonics.])])
4247 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4248 gcc_cv_as_ix86_fildq,,,
4249 [fildq (%ebp); fistpq (%ebp)],,
4250 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4251 [Define if your assembler uses fildq and fistq mnemonics.])])
4253 gcc_GAS_CHECK_FEATURE([cmov syntax],
4254 gcc_cv_as_ix86_cmov_sun_syntax,,,
4255 [cmovl.l %edx, %eax],,
4256 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4257 [Define if your assembler supports the Sun syntax for cmov.])])
4259 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4260 gcc_cv_as_ix86_ffreep,,,
4262 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4263 [Define if your assembler supports the ffreep mnemonic.])])
4265 gcc_GAS_CHECK_FEATURE([.quad directive],
4266 gcc_cv_as_ix86_quad,,,
4268 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4269 [Define if your assembler supports the .quad directive.])])
4271 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4272 gcc_cv_as_ix86_sahf,,,
4275 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4276 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4278 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4279 gcc_cv_as_ix86_interunit_movq,,,
4283 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4284 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4285 [Define if your assembler supports interunit movq mnemonic.])
4287 gcc_GAS_CHECK_FEATURE([hle prefixes],
4288 gcc_cv_as_ix86_hle,,,
4289 [lock xacquire cmpxchg %esi, (%ecx)],,
4290 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4291 [Define if your assembler supports HLE prefixes.])])
4293 gcc_GAS_CHECK_FEATURE([swap suffix],
4294 gcc_cv_as_ix86_swap,,,
4295 [movl.s %esp, %ebp],,
4296 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4297 [Define if your assembler supports the swap suffix.])])
4299 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4300 gcc_cv_as_ix86_diff_sect_delta,,,
4308 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4309 [Define if your assembler supports the subtraction of symbols in different sections.])])
4311 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4312 gcc_cv_as_ix86_rep_lock_prefix,,,
4318 lock addl %edi, (%eax,%esi)
4319 lock orl $0, (%esp)],,
4320 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4321 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4323 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4324 gcc_cv_as_ix86_ud2,,,
4326 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4327 [Define if your assembler supports the 'ud2' mnemonic.])])
4329 # Enforce 32-bit output with gas and gld.
4330 if test x$gas = xyes; then
4331 as_ix86_gas_32_opt="--32"
4333 if echo "$ld_ver" | grep GNU > /dev/null; then
4334 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4335 ld_ix86_gld_32_opt="-melf_i386_sol2"
4337 ld_ix86_gld_32_opt="-melf_i386"
4341 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4342 gcc_cv_as_ix86_tlsgdplt,,
4343 [$as_ix86_gas_32_opt],
4344 [call tls_gd@tlsgdplt],
4345 [if test x$gcc_cv_ld != x \
4346 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4347 gcc_cv_as_ix86_tlsgdplt=yes
4350 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4351 [Define if your assembler and linker support @tlsgdplt.])])
4354 .section .tdata,"aw'$tls_section_flag'",@progbits
4356 .section .text,"ax",@progbits
4357 call tls_ld@tlsldmplt'
4359 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4360 gcc_cv_as_ix86_tlsldmplt,,
4361 [$as_ix86_gas_32_opt],
4363 [if test x$gcc_cv_ld != x \
4364 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4365 gcc_cv_as_ix86_tlsldmplt=yes
4368 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4369 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4370 [Define to 1 if your assembler and linker support @tlsldmplt.])
4373 .section .text,"ax",@progbits
4375 .type _start, @function
4377 leal value@tlsldm(%ebx), %eax
4378 call ___tls_get_addr@plt
4380 .section .tdata,"aw'$tls_section_flag'",@progbits
4381 .type value, @object
4383 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4384 gcc_cv_as_ix86_tlsldm,,
4385 [$as_ix86_gas_32_opt],
4387 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4388 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4389 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4390 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4391 gcc_cv_as_ix86_tlsldm=yes
4395 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4396 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4397 [Define to 1 if your assembler and linker support @tlsldm.])
4408 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4409 gcc_cv_as_ix86_got32x,,
4410 [$as_ix86_gas_32_opt],
4412 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4413 && test x$gcc_cv_readelf != x \
4414 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4415 | grep R_386_GOT32X > /dev/null 2>&1 \
4416 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4417 if $gcc_cv_objdump -dw conftest 2>&1 \
4418 | grep 0xffffff > /dev/null 2>&1; then
4419 gcc_cv_as_ix86_got32x=no
4421 gcc_cv_as_ix86_got32x=yes
4425 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4426 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4427 [Define 0/1 if your assembler and linker support @GOT.])
4429 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4430 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4431 [$as_ix86_gas_32_opt],
4437 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4438 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4439 [Define true if the assembler supports '.long foo@GOTOFF'.])
4442 .section .text,"ax",@progbits
4444 .type _start, @function
4446 leal ld@tlsldm(%ecx), %eax
4447 call *___tls_get_addr@GOT(%ecx)
4448 leal gd@tlsgd(%ecx), %eax
4449 call *___tls_get_addr@GOT(%ecx)
4451 .section .tdata,"aw'$tls_section_flag'",@progbits
4459 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4460 gcc_cv_as_ix86_tls_get_addr_via_got,,
4461 [$as_ix86_gas_32_opt],
4463 [if test x$gcc_cv_ld != x \
4464 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4465 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4468 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4469 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4470 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4474 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4475 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4477 addl r15 = @ltoffx(x#), gp
4479 ld8.mov r16 = [[r15]], x#],,
4480 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4481 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4489 gcc_GAS_CHECK_FEATURE([.machine directive support],
4490 gcc_cv_as_machine_directive,,,
4491 [ .machine ppc7400])
4492 if test x$gcc_cv_as_machine_directive != xyes; then
4493 echo "*** This target requires an assembler supporting \".machine\"" >&2
4494 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4495 test x$build = x$target && exit 1
4501 *-*-aix*) conftest_s=' .machine "pwr5"
4504 *-*-darwin*) conftest_s=' .text
4506 *) conftest_s=' .machine power4
4511 gcc_GAS_CHECK_FEATURE([mfcr field support],
4512 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4514 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4515 [Define if your assembler supports mfcr field.])])
4518 *-*-aix*) conftest_s=' .machine "pwr5"
4521 *) conftest_s=' .machine power5
4526 gcc_GAS_CHECK_FEATURE([popcntb support],
4527 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4529 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4530 [Define if your assembler supports popcntb field.])])
4533 *-*-aix*) conftest_s=' .machine "pwr5x"
4536 *) conftest_s=' .machine power5
4541 gcc_GAS_CHECK_FEATURE([fp round support],
4542 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4544 [AC_DEFINE(HAVE_AS_FPRND, 1,
4545 [Define if your assembler supports fprnd.])])
4548 *-*-aix*) conftest_s=' .machine "pwr6"
4551 *) conftest_s=' .machine power6
4556 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4557 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4559 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4560 [Define if your assembler supports mffgpr and mftgpr.])])
4563 *-*-aix*) conftest_s=' .csect .text[[PR]]
4565 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4569 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4570 *) conftest_s=' .text
4572 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4575 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4576 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4578 [AC_DEFINE(HAVE_AS_REL16, 1,
4579 [Define if your assembler supports R_PPC_REL16 relocs.])])
4582 *-*-aix*) conftest_s=' .machine "pwr6"
4585 *) conftest_s=' .machine power6
4590 gcc_GAS_CHECK_FEATURE([compare bytes support],
4591 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4593 [AC_DEFINE(HAVE_AS_CMPB, 1,
4594 [Define if your assembler supports cmpb.])])
4597 *-*-aix*) conftest_s=' .machine "pwr6"
4600 *) conftest_s=' .machine power6
4605 gcc_GAS_CHECK_FEATURE([decimal float support],
4606 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4608 [AC_DEFINE(HAVE_AS_DFP, 1,
4609 [Define if your assembler supports DFP instructions.])])
4612 *-*-aix*) conftest_s=' .machine "pwr7"
4615 *) conftest_s=' .machine power7
4620 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4621 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4623 [AC_DEFINE(HAVE_AS_VSX, 1,
4624 [Define if your assembler supports VSX instructions.])])
4627 *-*-aix*) conftest_s=' .machine "pwr7"
4630 *) conftest_s=' .machine power7
4635 gcc_GAS_CHECK_FEATURE([popcntd support],
4636 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4638 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4639 [Define if your assembler supports POPCNTD instructions.])])
4642 *-*-aix*) conftest_s=' .machine "pwr8"
4643 .csect .text[[PR]]';;
4644 *) conftest_s=' .machine power8
4648 gcc_GAS_CHECK_FEATURE([power8 support],
4649 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4651 [AC_DEFINE(HAVE_AS_POWER8, 1,
4652 [Define if your assembler supports POWER8 instructions.])])
4655 *-*-aix*) conftest_s=' .machine "pwr9"
4656 .csect .text[[PR]]';;
4657 *) conftest_s=' .machine power9
4661 gcc_GAS_CHECK_FEATURE([power9 support],
4662 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4664 [AC_DEFINE(HAVE_AS_POWER9, 1,
4665 [Define if your assembler supports POWER9 instructions.])])
4668 *-*-aix*) conftest_s=' .csect .text[[PR]]
4670 *) conftest_s=' .text
4674 gcc_GAS_CHECK_FEATURE([lwsync support],
4675 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4677 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4678 [Define if your assembler supports LWSYNC instructions.])])
4681 *-*-aix*) conftest_s=' .machine "476"
4684 *) conftest_s=' .machine "476"
4689 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4690 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4692 [AC_DEFINE(HAVE_AS_DCI, 1,
4693 [Define if your assembler supports the DCI/ICI instructions.])])
4695 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4696 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4697 [.gnu_attribute 4,1],,
4698 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4699 [Define if your assembler supports .gnu_attribute.])])
4701 gcc_GAS_CHECK_FEATURE([tls marker support],
4702 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4703 [ bl __tls_get_addr(x@tlsgd)],,
4704 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4705 [Define if your assembler supports arg info for __tls_get_addr.])])
4707 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4708 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4709 [ .reloc .,R_PPC64_ENTRY; nop],,
4710 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4711 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4715 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4716 gcc_cv_as_aix_ref, [2,21,0],,
4717 [ .csect stuff[[rw]]
4723 [AC_DEFINE(HAVE_AS_REF, 1,
4724 [Define if your assembler supports .ref])])
4726 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4727 gcc_cv_as_aix_dwloc, [2,21,0],,
4732 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4733 [Define if your assembler supports AIX debug frame section label reference.])])
4739 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4740 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4741 [ lw $4,%gp_rel(foo)($4)],,
4742 [if test x$target_cpu_default = x
4743 then target_cpu_default=MASK_EXPLICIT_RELOCS
4744 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4747 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4748 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4749 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4750 [Define if the assembler understands -mno-shared.])])
4752 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4753 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4754 [.gnu_attribute 4,1],,
4755 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4756 [Define if your assembler supports .gnu_attribute.])])
4758 gcc_GAS_CHECK_FEATURE([.module support],
4759 gcc_cv_as_mips_dot_module,,[-32],
4762 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4763 [Define if your assembler supports .module.])])
4764 if test x$gcc_cv_as_mips_dot_module = xno \
4765 && test x$with_fp_32 != x; then
4767 [Requesting --with-fp-32= requires assembler support for .module.])
4770 gcc_GAS_CHECK_FEATURE([.micromips support],
4771 gcc_cv_as_micromips_support,,[--fatal-warnings],
4773 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4774 [Define if your assembler supports the .set micromips directive])])
4776 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4777 gcc_cv_as_mips_dtprelword, [2,18,0],,
4778 [.section .tdata,"awT",@progbits
4782 .dtprelword x+0x8000],,
4783 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4784 [Define if your assembler supports .dtprelword.])])
4786 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4787 gcc_cv_as_mips_dspr1_mult,,,
4797 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4798 [Define if your assembler supports DSPR1 mult.])])
4800 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4801 gcc_cv_as_ld_jalr_reloc=no
4802 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4803 if test $in_tree_ld = yes ; then
4804 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4805 && test $in_tree_ld_is_elf = yes; then
4806 gcc_cv_as_ld_jalr_reloc=yes
4808 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4809 echo ' .ent x' > conftest.s
4810 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4811 echo ' lw $25,%call16(y)($28)' >> conftest.s
4812 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4813 echo '1: jalr $25' >> conftest.s
4814 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4815 echo '1: jalr $25' >> conftest.s
4816 echo ' .end x' >> conftest.s
4817 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4818 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4819 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4820 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4821 gcc_cv_as_ld_jalr_reloc=yes
4827 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4828 if test x$target_cpu_default = x; then
4829 target_cpu_default=MASK_RELAX_PIC_CALLS
4831 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4834 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4836 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4837 [gcc_cv_ld_mips_personality_relaxation],
4838 [gcc_cv_ld_mips_personality_relaxation=no
4839 if test $in_tree_ld = yes ; then
4840 if test "$gcc_cv_gld_major_version" -eq 2 \
4841 -a "$gcc_cv_gld_minor_version" -ge 21 \
4842 -o "$gcc_cv_gld_major_version" -gt 2; then
4843 gcc_cv_ld_mips_personality_relaxation=yes
4845 elif test x$gcc_cv_as != x \
4846 -a x$gcc_cv_ld != x \
4847 -a x$gcc_cv_readelf != x ; then
4848 cat > conftest.s <<EOF
4850 .cfi_personality 0x80,indirect_ptr
4857 .section .data,"aw",@progbits
4861 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4862 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4863 if $gcc_cv_readelf -d conftest 2>&1 \
4864 | grep TEXTREL > /dev/null 2>&1; then
4866 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4867 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4870 gcc_cv_ld_mips_personality_relaxation=yes
4874 rm -f conftest.s conftest.o conftest])
4875 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4876 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4877 [Define if your linker can relax absolute .eh_frame personality
4878 pointers into PC-relative form.])
4881 gcc_GAS_CHECK_FEATURE([-mnan= support],
4882 gcc_cv_as_mips_nan,,
4884 [AC_DEFINE(HAVE_AS_NAN, 1,
4885 [Define if the assembler understands -mnan=.])])
4886 if test x$gcc_cv_as_mips_nan = xno \
4887 && test x$with_nan != x; then
4889 [Requesting --with-nan= requires assembler support for -mnan=])
4893 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4894 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4895 [.gnu_attribute 8,1],,
4896 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4897 [Define if your assembler supports .gnu_attribute.])])
4898 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4899 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4904 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4905 [Define if your assembler supports .machine and .machinemode.])])
4906 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4907 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4908 [ .machine z13+vx ],,
4909 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4910 [Define if your assembler supports architecture modifiers.])])
4914 # Mips and HP-UX need the GNU assembler.
4915 # Linux on IA64 might be able to use the Intel assembler.
4918 mips*-*-* | *-*-hpux* )
4919 if test x$gas_flag = xyes \
4920 || test x"$host" != x"$build" \
4921 || test ! -x "$gcc_cv_as" \
4922 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4925 echo "*** This configuration requires the GNU assembler" >&2
4931 # ??? Not all targets support dwarf2 debug_line, even within a version
4932 # of gas. Moreover, we need to emit a valid instruction to trigger any
4933 # info to the output file. So, as supported targets are added to gas 2.11,
4934 # add some instruction here to (also) show we expect this might work.
4935 # ??? Once 2.11 is released, probably need to add first known working
4936 # version to the per-target configury.
4938 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4939 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4940 | tilegx | tilepro | visium | xstormy16 | xtensa)
4950 if test x"$insn" != x; then
4952 .file 1 \"conftest.s\"
4955 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4956 gcc_cv_as_dwarf2_debug_line,
4957 [elf,2,11,0],, [$conftest_s],
4958 [if test x$gcc_cv_objdump != x \
4959 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4960 | grep debug_line > /dev/null 2>&1; then
4961 gcc_cv_as_dwarf2_debug_line=yes
4964 # The .debug_line file table must be in the exact order that
4965 # we specified the files, since these indices are also used
4966 # by DW_AT_decl_file. Approximate this test by testing if
4967 # the assembler bitches if the same index is assigned twice.
4968 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4969 gcc_cv_as_dwarf2_file_buggy,,,
4973 if test $gcc_cv_as_dwarf2_debug_line = yes \
4974 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4975 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4976 [Define if your assembler supports dwarf2 .file/.loc directives,
4977 and preserves file table indices exactly as given.])
4979 if test $gcc_cv_as_leb128 = yes; then
4981 .file 1 \"conftest.s\"
4982 .loc 1 3 0 view .LVU1
4988 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4989 gcc_cv_as_dwarf2_debug_view,
4990 [elf,2,27,0],,[$conftest_s],,
4991 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4992 [Define if your assembler supports views in dwarf2 .loc directives.])])
4996 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4997 gcc_cv_as_gdwarf2_flag,
4998 [elf,2,11,0], [--gdwarf2], [$insn],,
4999 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
5000 [Define if your assembler supports the --gdwarf2 option.])])
5002 gcc_GAS_CHECK_FEATURE([--gstabs option],
5003 gcc_cv_as_gstabs_flag,
5004 [elf,2,11,0], [--gstabs], [$insn],,
5005 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5006 [Define if your assembler supports the --gstabs option.])])
5008 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5009 gcc_cv_as_debug_prefix_map_flag,
5010 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5011 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5012 [Define if your assembler supports the --debug-prefix-map option.])])
5015 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5016 gcc_cv_as_compress_debug,,,,
5017 [# gas compiled without zlib cannot compress debug sections and warns
5018 # about it, but still exits successfully. So check for this, too.
5019 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5021 gcc_cv_as_compress_debug=0
5022 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5023 # defaulting to the ELF gABI format.
5024 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5026 gcc_cv_as_compress_debug=2
5027 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5028 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5029 # Before binutils 2.26, gas only supported --compress-debug-options and
5030 # emitted the traditional GNU format.
5031 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5033 gcc_cv_as_compress_debug=1
5034 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5035 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5037 gcc_cv_as_compress_debug=0
5039 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5040 [Define to the level of your assembler's compressed debug section support.])
5041 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5042 [Define to the assembler option to enable compressed debug sections.])
5043 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5044 [Define to the assembler option to disable compressed debug sections.])
5046 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5049 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5050 [Define if your assembler supports .lcomm with an alignment field.])])
5052 if test x$with_sysroot = x && test x$host = x$target \
5053 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5054 && test "$prefix" != "NONE"; then
5055 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5056 [Define to PREFIX/include if cpp should also search that directory.])
5059 # Determine the version of glibc, if any, used on the target.
5060 AC_MSG_CHECKING([for target glibc version])
5061 AC_ARG_WITH([glibc-version],
5062 [AS_HELP_STRING([--with-glibc-version=M.N],
5063 [assume GCC used with glibc version M.N or later])], [
5064 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5065 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5066 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5068 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5070 glibc_version_major=0
5071 glibc_version_minor=0
5072 [if test -f $target_header_dir/features.h \
5073 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5074 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5075 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5076 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5078 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5079 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5080 [GNU C Library major version number used on the target, or 0.])
5081 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5082 [GNU C Library minor version number used on the target, or 0.])
5084 AC_ARG_ENABLE(gnu-unique-object,
5085 [AS_HELP_STRING([--enable-gnu-unique-object],
5086 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5087 [case $enable_gnu_unique_object in
5089 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5090 Valid choices are 'yes' and 'no'.]) ;;
5092 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5094 [.type foo, '$target_type_format_char'gnu_unique_object],,
5095 # We need to unquote above to to use the definition from config.gcc.
5096 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5097 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5099 if test x$enable_gnu_unique_object = xyes; then
5100 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5101 [Define if your assembler supports @gnu_unique_object.])
5104 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5105 [gcc_cv_as_line_zero],
5106 [gcc_cv_as_line_zero=no
5107 if test $in_tree_gas = yes; then
5108 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5109 elif test "x$gcc_cv_as" != x; then
5110 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5111 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5112 test "x`cat conftest.out`" = x
5114 gcc_cv_as_line_zero=yes
5116 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5117 cat conftest.s >&AS_MESSAGE_LOG_FD
5118 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5119 cat conftest.out >&AS_MESSAGE_LOG_FD
5121 rm -f conftest.o conftest.s conftest.out
5123 if test "x$gcc_cv_as_line_zero" = xyes; then
5124 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5125 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5128 AC_MSG_CHECKING(support for thin archives)
5129 thin_archive_support=no
5130 echo 'int main (void) { return 0; }' > conftest.c
5131 if ($AR --version | sed 1q | grep "GNU ar" \
5132 && $CC $CFLAGS -c conftest.c \
5133 && $AR rcT conftest.a conftest.o \
5134 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5135 thin_archive_support=yes
5137 rm -f conftest.c conftest.o conftest.a conftest
5138 AC_MSG_RESULT($thin_archive_support)
5139 AC_SUBST(thin_archive_support)
5141 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5142 gcc_cv_ld_eh_frame_hdr=no
5143 if test $in_tree_ld = yes ; then
5144 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5145 && test $in_tree_ld_is_elf = yes; then
5146 gcc_cv_ld_eh_frame_hdr=yes
5148 elif test x$gcc_cv_ld != x; then
5149 if echo "$ld_ver" | grep GNU > /dev/null; then
5150 # Check if linker supports --eh-frame-hdr option
5151 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5152 gcc_cv_ld_eh_frame_hdr=yes
5157 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5158 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5159 gcc_cv_ld_eh_frame_hdr=yes
5165 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5166 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5167 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5168 [Define if your linker supports .eh_frame_hdr.])
5170 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5172 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5173 gcc_cv_ld_eh_frame_ciev3=no
5174 if test $in_tree_ld = yes ; then
5175 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5176 && test $in_tree_ld_is_elf = yes; then
5177 gcc_cv_ld_eh_frame_ciev3=yes
5179 elif test x$gcc_cv_ld != x; then
5180 if echo "$ld_ver" | grep GNU > /dev/null; then
5181 gcc_cv_ld_eh_frame_ciev3=yes
5182 if test 0"$ld_date" -lt 20040513; then
5183 if test -n "$ld_date"; then
5184 # If there was date string, but was earlier than 2004-05-13, fail
5185 gcc_cv_ld_eh_frame_ciev3=no
5186 elif test "$ld_vers_major" -lt 2; then
5187 gcc_cv_ld_eh_frame_ciev3=no
5188 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5189 gcc_cv_ld_eh_frame_ciev3=no
5195 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5196 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5197 gcc_cv_ld_eh_frame_ciev3=yes
5203 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5204 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5205 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5206 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5208 AC_MSG_CHECKING(linker position independent executable support)
5210 if test $in_tree_ld = yes ; then
5212 # Full PIE support on Solaris was only introduced in gld 2.26.
5213 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5214 *) gcc_gld_pie_min_version=15 ;;
5216 if test "$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 \
5217 && test $in_tree_ld_is_elf = yes; then
5220 elif test x$gcc_cv_ld != x; then
5221 # Check if linker supports -pie option
5222 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5226 if echo "$ld_ver" | grep GNU > /dev/null \
5227 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5234 *-*-solaris2.1[[1-9]]*)
5235 # Solaris 11.3 added PIE support.
5236 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5243 if test x"$gcc_cv_ld_pie" = xyes; then
5244 AC_DEFINE(HAVE_LD_PIE, 1,
5245 [Define if your linker supports PIE option.])
5247 AC_MSG_RESULT($gcc_cv_ld_pie)
5249 AC_MSG_CHECKING(linker PIE support with copy reloc)
5250 gcc_cv_ld_pie_copyreloc=no
5251 if test $gcc_cv_ld_pie = yes ; then
5252 if test $in_tree_ld = yes ; then
5253 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5254 gcc_cv_ld_pie_copyreloc=yes
5256 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5257 # Check if linker supports -pie option with copy reloc
5259 i?86-*-linux* | x86_64-*-linux*)
5260 cat > conftest1.s <<EOF
5263 .type a_glob, @object
5268 cat > conftest2.s <<EOF
5271 .type main, @function
5273 movl %eax, a_glob(%rip)
5276 .section .data.rel,"aw",@progbits
5281 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5282 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5283 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5284 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5285 gcc_cv_ld_pie_copyreloc=yes
5287 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5292 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5293 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5294 [Define 0/1 if your linker supports -pie option with copy reloc.])
5295 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5297 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5298 gcc_cv_ld_eh_gc_sections=no
5299 if test $in_tree_ld = yes ; then
5300 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5301 && test $in_tree_ld_is_elf = yes; then
5302 gcc_cv_ld_eh_gc_sections=yes
5304 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5305 cat > conftest.s <<EOF
5308 .type _start, @function
5311 .size _start, .-_start
5312 .section .text.foo,"ax",@progbits
5313 .type foo, @function
5317 .section .gcc_except_table.foo,"a",@progbits
5320 .section .eh_frame,"a",@progbits
5323 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5324 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5325 | grep "gc-sections option ignored" > /dev/null; then
5326 gcc_cv_ld_eh_gc_sections=no
5327 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5328 | grep gcc_except_table > /dev/null; then
5329 gcc_cv_ld_eh_gc_sections=yes
5330 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5331 if test x$gcc_cv_as_comdat_group != xyes; then
5332 gcc_cv_ld_eh_gc_sections=no
5333 cat > conftest.s <<EOF
5336 .type _start, @function
5339 .size _start, .-_start
5340 .section .gnu.linkonce.t.foo,"ax",@progbits
5341 .type foo, @function
5345 .section .gcc_except_table.foo,"a",@progbits
5348 .section .eh_frame,"a",@progbits
5351 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5352 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5353 | grep "gc-sections option ignored" > /dev/null; then
5354 gcc_cv_ld_eh_gc_sections=no
5355 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5356 | grep gcc_except_table > /dev/null; then
5357 gcc_cv_ld_eh_gc_sections=yes
5363 rm -f conftest.s conftest.o conftest
5367 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5368 gcc_cv_ld_eh_gc_sections=no
5371 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5372 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5373 [Define if your linker supports garbage collection of
5374 sections in presence of EH frames.])
5376 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5378 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5379 gcc_cv_ld_eh_gc_sections_bug=no
5380 if test $in_tree_ld = yes ; then
5381 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5382 && test $in_tree_ld_is_elf = yes; then
5383 gcc_cv_ld_eh_gc_sections_bug=yes
5385 elif test x$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
5386 gcc_cv_ld_eh_gc_sections_bug=yes
5387 cat > conftest.s <<EOF
5390 .type _start, @function
5393 .size _start, .-_start
5394 .section .text.startup.foo,"ax",@progbits
5395 .type foo, @function
5399 .section .gcc_except_table.foo,"a",@progbits
5402 .section .eh_frame,"a",@progbits
5405 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5406 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5407 | grep "gc-sections option ignored" > /dev/null; then
5409 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5410 | grep gcc_except_table > /dev/null; then
5411 gcc_cv_ld_eh_gc_sections_bug=no
5414 rm -f conftest.s conftest.o conftest
5416 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5417 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5418 [Define if your linker has buggy garbage collection of
5419 sections support when .text.startup.foo like sections are used.])
5421 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5423 AC_MSG_CHECKING(linker for compressed debug sections)
5424 # gold/gld support compressed debug sections since binutils 2.19/2.21
5425 # In binutils 2.26, gld gained support for the ELF gABI format.
5426 if test $in_tree_ld = yes ; then
5427 gcc_cv_ld_compress_debug=0
5428 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5429 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5430 gcc_cv_ld_compress_debug=2
5431 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5432 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5433 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5434 gcc_cv_ld_compress_debug=3
5435 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5436 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5437 && test $in_tree_ld_is_elf = yes; then
5438 gcc_cv_ld_compress_debug=1
5440 elif echo "$ld_ver" | grep GNU > /dev/null; then
5441 if test "$ld_vers_major" -lt 2 \
5442 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5443 gcc_cv_ld_compress_debug=0
5444 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5445 gcc_cv_ld_compress_debug=1
5447 gcc_cv_ld_compress_debug=3
5448 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5450 if test $ld_is_gold = yes; then
5451 gcc_cv_ld_compress_debug=2
5452 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5458 # Introduced in Solaris 11.2.
5459 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5460 gcc_cv_ld_compress_debug=3
5461 gcc_cv_ld_compress_debug_option="-z compress-sections"
5463 gcc_cv_ld_compress_debug=0
5467 # Assume linkers other than GNU ld don't support compessed debug
5469 gcc_cv_ld_compress_debug=0
5474 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5475 [Define to the level of your linker's compressed debug section support.])
5476 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5477 [Define to the linker option to enable compressed debug sections.])
5478 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5480 if test x"$ld64_flag" = x"yes"; then
5482 # Set defaults for possibly untestable items.
5483 gcc_cv_ld64_export_dynamic=0
5485 if test "$build" = "$host"; then
5491 # On Darwin, because of FAT library support, it is often possible to execute
5492 # exes from compatible archs even when the host differs from the build system.
5493 case "$build","$host" in
5494 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5499 # If the configurer specified a minimum ld64 version to be supported, then use
5500 # that to determine feature support.
5501 if test x"${gcc_cv_ld64_version}" != x; then
5502 AC_MSG_CHECKING(ld64 specified version)
5503 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5504 AC_MSG_RESULT($gcc_cv_ld64_major)
5505 if test "$gcc_cv_ld64_major" -ge 236; then
5506 gcc_cv_ld64_export_dynamic=1
5508 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5509 # If the version was not specified, try to find it.
5510 AC_MSG_CHECKING(linker version)
5511 if test x"${gcc_cv_ld64_version}" = x; then
5512 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5514 AC_MSG_RESULT($gcc_cv_ld64_version)
5516 AC_MSG_CHECKING(linker for -export_dynamic support)
5517 gcc_cv_ld64_export_dynamic=1
5518 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5519 gcc_cv_ld64_export_dynamic=0
5521 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5524 if test x"${gcc_cv_ld64_version}" != x; then
5525 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5526 [Define to ld64 version.])
5529 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5530 [Define to 1 if ld64 supports '-export_dynamic'.])
5537 AC_CACHE_CHECK(linker --as-needed support,
5538 gcc_cv_ld_as_needed,
5539 [gcc_cv_ld_as_needed=no
5540 gcc_cv_ld_as_needed_option='--as-needed'
5541 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5542 if test $in_tree_ld = yes ; then
5543 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5544 && test $in_tree_ld_is_elf = yes; then
5545 gcc_cv_ld_as_needed=yes
5546 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5547 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5548 gcc_cv_ld_no_as_needed_option='--pop-state'
5551 elif test x$gcc_cv_ld != x; then
5552 # Check if linker supports --as-needed and --no-as-needed options
5553 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5554 gcc_cv_ld_as_needed=yes
5555 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5556 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5557 && echo "$ld_ver" | grep GNU > /dev/null \
5558 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5559 # Use these options only when both ld.bfd and ld.gold support
5560 # --push-state/--pop-state, which unfortunately wasn't added
5562 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5563 gcc_cv_ld_no_as_needed_option='--pop-state'
5566 case "$target:$gnu_ld" in
5568 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5570 gcc_cv_ld_as_needed=yes
5571 gcc_cv_ld_as_needed_option="-z ignore"
5572 gcc_cv_ld_no_as_needed_option="-z record"
5576 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5577 # dl_iterate_phdr, i.e. since Solaris 11.
5579 *-*-solaris2.1[[1-9]]*)
5581 i?86-*-* | x86_64-*-*)
5582 if echo "$ld_ver" | grep GNU > /dev/null; then
5583 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5584 gcc_cv_ld_as_needed=no
5590 gcc_cv_ld_as_needed=no
5594 if test x"$gcc_cv_ld_as_needed" = xyes; then
5595 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5596 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5597 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5598 [Define to the linker option to ignore unused dependencies.])
5599 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5600 [Define to the linker option to keep unused dependencies.])
5603 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5604 saved_LDFLAGS="$LDFLAGS"
5605 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5606 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5607 AC_LINK_IFELSE([int main(void) {return 0;}],
5608 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5610 LDFLAGS="$saved_LDFLAGS"
5611 if test "x$gcc_cv_ld_clearcap" = xyes; then
5612 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5613 [Define if the linker supports clearing hardware capabilities via mapfile.])
5614 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5616 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5622 emul_name="-melf32lppc"
5625 emul_name="-melf32ppc"
5628 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5630 [gcc_cv_ld_ppc_attr=no
5631 if test x"$ld_is_gold" = xyes; then
5632 gcc_cv_ld_ppc_attr=yes
5633 elif test $in_tree_ld = yes ; then
5634 if test "$gcc_cv_gld_major_version" -eq 2 \
5635 -a "$gcc_cv_gld_minor_version" -ge 28 \
5636 -o "$gcc_cv_gld_major_version" -gt 2; then
5637 gcc_cv_ld_ppc_attr=yes
5639 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5640 # check that merging the long double .gnu_attribute doesn't warn
5641 cat > conftest1.s <<EOF
5644 cat > conftest2.s <<EOF
5647 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5648 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5649 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5650 && test ! -s conftest.err; then
5651 gcc_cv_ld_ppc_attr=yes
5653 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5656 if test x$gcc_cv_ld_ppc_attr = xyes; then
5657 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5658 [Define if your PowerPC linker has .gnu.attributes long double support.])
5663 case "$target:$tm_file" in
5664 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5667 emul_name="-melf64lppc"
5670 emul_name="-melf64ppc"
5673 emul_name="-melf64ppc_fbsd"
5676 AC_CACHE_CHECK(linker support for omitting dot symbols,
5677 gcc_cv_ld_no_dot_syms,
5678 [gcc_cv_ld_no_dot_syms=no
5679 if test x"$ld_is_gold" = xyes; then
5680 gcc_cv_ld_no_dot_syms=yes
5681 elif test $in_tree_ld = yes ; then
5682 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5683 gcc_cv_ld_no_dot_syms=yes
5685 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5686 cat > conftest1.s <<EOF
5690 cat > conftest2.s <<EOF
5691 .section ".opd","aw"
5696 .quad .LEfoo,.TOC.@tocbase,0
5702 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5703 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5704 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5705 gcc_cv_ld_no_dot_syms=yes
5707 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5710 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5711 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5712 [Define if your PowerPC64 linker only needs function descriptor syms.])
5715 AC_CACHE_CHECK(linker large toc support,
5716 gcc_cv_ld_large_toc,
5717 [gcc_cv_ld_large_toc=no
5718 if test x"$ld_is_gold" = xyes; then
5719 gcc_cv_ld_large_toc=yes
5720 elif test $in_tree_ld = yes ; then
5721 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5722 gcc_cv_ld_large_toc=yes
5724 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5725 cat > conftest.s <<EOF
5726 .section ".tbss","awT",@nobits
5732 addis 9,13,ie0@got@tprel@ha
5733 ld 9,ie0@got@tprel@l(9)
5735 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5736 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5737 gcc_cv_ld_large_toc=yes
5739 rm -f conftest conftest.o conftest.s
5742 if test x"$gcc_cv_ld_large_toc" = xyes; then
5743 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5744 [Define if your PowerPC64 linker supports a large TOC.])
5747 AC_CACHE_CHECK(linker toc pointer alignment,
5748 gcc_cv_ld_toc_align,
5749 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5750 cat > conftest.s <<EOF
5755 .section .data.rel.ro,"aw",@progbits
5760 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5761 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5762 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5764 rm -f conftest conftest.o conftest.s
5767 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5768 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5769 [Define to .TOC. alignment forced by your linker.])
5776 AC_CACHE_CHECK(linker large toc support,
5777 gcc_cv_ld_large_toc,
5778 [gcc_cv_ld_large_toc=no
5779 if test x$gcc_cv_as != x ; then
5780 cat > conftest.s <<EOF
5790 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5791 gcc_cv_ld_large_toc=yes
5793 rm -f conftest conftest.o conftest.s
5796 if test x"$gcc_cv_ld_large_toc" = xyes; then
5797 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5798 [Define if your PowerPC64 linker supports a large TOC.])
5803 AC_CACHE_CHECK(linker --build-id support,
5805 [gcc_cv_ld_buildid=no
5806 if test $in_tree_ld = yes ; then
5807 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5808 "$gcc_cv_gld_minor_version" -ge 18 -o \
5809 "$gcc_cv_gld_major_version" -gt 2 \
5810 && test $in_tree_ld_is_elf = yes; then
5811 gcc_cv_ld_buildid=yes
5813 elif test x$gcc_cv_ld != x; then
5814 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5815 gcc_cv_ld_buildid=yes
5818 if test x"$gcc_cv_ld_buildid" = xyes; then
5819 AC_DEFINE(HAVE_LD_BUILDID, 1,
5820 [Define if your linker supports --build-id.])
5823 AC_ARG_ENABLE(linker-build-id,
5824 [AS_HELP_STRING([--enable-linker-build-id],
5825 [compiler will always pass --build-id to linker])],
5827 enable_linker_build_id=no)
5829 if test x"$enable_linker_build_id" = xyes; then
5830 if test x"$gcc_cv_ld_buildid" = xyes; then
5831 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5832 [Define if gcc should always pass --build-id to linker.])
5834 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5838 # In binutils 2.21, GNU ld gained support for new emulations fully
5839 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5840 AC_CACHE_CHECK(linker *_sol2 emulation support,
5841 gcc_cv_ld_sol2_emulation,
5842 [gcc_cv_ld_sol2_emulation=no
5843 if test $in_tree_ld = yes ; then
5844 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5845 "$gcc_cv_gld_minor_version" -ge 21 -o \
5846 "$gcc_cv_gld_major_version" -gt 2 \
5847 && test $in_tree_ld_is_elf = yes; then
5848 gcc_cv_ld_sol2_emulation=yes
5850 elif test x$gcc_cv_ld != x; then
5851 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5852 grep _sol2 > /dev/null; then
5853 gcc_cv_ld_sol2_emulation=yes
5856 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5857 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5858 [Define if your linker supports the *_sol2 emulations.])
5861 AC_CACHE_CHECK(linker --sysroot support,
5863 [gcc_cv_ld_sysroot=no
5864 if test $in_tree_ld = yes ; then
5865 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5866 gcc_cv_ld_sysroot=yes
5868 elif test x$gcc_cv_ld != x; then
5869 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5870 gcc_cv_ld_sysroot=yes
5873 if test x"$gcc_cv_ld_sysroot" = xyes; then
5874 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5875 [Define if your linker supports --sysroot.])
5880 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5881 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5882 gcc_cv_solaris_crts,
5883 [gcc_cv_solaris_crts=no
5884 if test x$host != x$target; then
5885 if test "x$with_sysroot" = xyes; then
5886 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5888 target_sysroot="${with_sysroot}"
5891 target_libdir="$target_sysroot/usr/lib"
5892 # At the time they were added, gcrt1.o became a symlink for backwards
5893 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5895 i?86-*-solaris2* | x86_64-*-solaris2*)
5896 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5899 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5904 if test x$gcc_cv_solaris_crts = xyes; then
5905 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5906 [Define if the system-provided CRTs are present on Solaris.])
5909 AC_ARG_ENABLE(libssp,
5910 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5911 [case "${enableval}" in
5915 AC_MSG_ERROR([unknown libssp setting $enableval])
5919 # Test for stack protector support in target C library.
5920 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5921 gcc_cv_libc_provides_ssp,
5922 [gcc_cv_libc_provides_ssp=no
5923 if test "x$enable_libssp" = "xno"; then
5924 gcc_cv_libc_provides_ssp=yes
5925 elif test "x$enable_libssp" = "xyes"; then
5926 gcc_cv_libc_provides_ssp=no
5930 # All versions of musl provide stack protector
5931 gcc_cv_libc_provides_ssp=yes;;
5932 *-*-linux* | *-*-kfreebsd*-gnu)
5933 # glibc 2.4 and later provides __stack_chk_fail and
5934 # either __stack_chk_guard, or TLS access to stack guard canary.
5935 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5936 [if test -f $target_header_dir/features.h \
5937 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5938 $target_header_dir/features.h > /dev/null; then
5939 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5940 $target_header_dir/features.h > /dev/null && \
5941 test -f $target_header_dir/bits/uClibc_config.h && \
5942 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5943 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5944 gcc_cv_libc_provides_ssp=yes
5946 # all versions of Bionic support stack protector
5947 elif test -f $target_header_dir/sys/cdefs.h \
5948 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5949 $target_header_dir/sys/cdefs.h > /dev/null; then
5950 gcc_cv_libc_provides_ssp=yes
5954 # Avoid complicated tests (see
5955 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5956 # simply assert that glibc does provide this, which is true for all
5957 # realistically usable GNU/Hurd configurations.
5958 # All supported versions of musl provide it as well
5959 gcc_cv_libc_provides_ssp=yes;;
5960 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5961 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5962 [echo "no __stack_chk_fail on this target"])
5964 *) gcc_cv_libc_provides_ssp=no ;;
5968 if test x$gcc_cv_libc_provides_ssp = xyes; then
5969 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5970 [Define if your target C library provides stack protector support])
5973 # Check whether --enable-default-ssp was given.
5974 AC_ARG_ENABLE(default-ssp,
5975 [AS_HELP_STRING([--enable-default-ssp],
5976 [enable Stack Smashing Protection as default])],[
5977 if test x$gcc_cv_libc_provides_ssp = xyes; then
5979 ia64*-*-*) enable_default_ssp=no ;;
5980 *) enable_default_ssp=$enableval ;;
5983 enable_default_ssp=no
5985 enable_default_ssp=no)
5986 if test x$enable_default_ssp = xyes ; then
5987 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5988 [Define if your target supports default stack protector and it is enabled.])
5990 AC_SUBST([enable_default_ssp])
5992 # Test for <sys/sdt.h> on the target.
5993 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5994 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5996 if test -f $target_header_dir/sys/sdt.h; then
5998 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5999 [Define if your target C library provides sys/sdt.h])
6001 AC_MSG_RESULT($have_sys_sdt_h)
6003 # Check if TFmode long double should be used by default or not.
6004 # Some glibc targets used DFmode long double, but with glibc 2.4
6005 # and later they can use TFmode.
6007 powerpc*-*-linux* | \
6011 AC_ARG_WITH(long-double-128,
6012 [AS_HELP_STRING([--with-long-double-128],
6013 [use 128-bit long double by default])],
6014 gcc_cv_target_ldbl128="$with_long_double_128",
6015 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6016 [gcc_cv_target_ldbl128=no
6017 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6018 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6019 && gcc_cv_target_ldbl128=yes
6023 if test x$gcc_cv_target_ldbl128 = xyes; then
6024 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6025 [Define if TFmode long double should be the default])
6028 # Check if TFmode long double target should use the IBM extended double or IEEE
6029 # 128-bit floating point formats if long doubles are 128-bits long. The long
6030 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6031 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6033 AC_ARG_WITH([long-double-format],
6034 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6035 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6036 case "$target:$with_long_double_format" in
6037 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6040 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6041 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6043 power7 | power8 | power9 | power1*)
6047 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6048 supported if the default cpu is power7 or newer])
6049 with_long_double_format=""
6053 xpowerpc64*-*-linux*:*)
6054 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6055 with_long_double_format=""
6058 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6059 on 64-bit PowerPC VSX Linux systems])
6060 with_long_double_format=""
6065 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6066 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6067 gcc_cv_libc_provides_hwcap_in_tcb=no
6070 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6073 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6074 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6075 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6078 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6079 gcc_cv_target_dl_iterate_phdr=unknown
6081 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6082 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6083 # libdl there, both complicating its use and breaking compatibility
6084 # between Solaris 10 updates.
6085 *-*-solaris2.1[[1-9]]*)
6086 # <link.h> needs both a dl_iterate_phdr declaration and support for
6087 # compilation with largefile support.
6088 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6089 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6090 gcc_cv_target_dl_iterate_phdr=yes
6092 gcc_cv_target_dl_iterate_phdr=no
6095 *-*-dragonfly* | *-*-freebsd*)
6096 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6097 gcc_cv_target_dl_iterate_phdr=yes
6099 gcc_cv_target_dl_iterate_phdr=no
6103 gcc_cv_target_dl_iterate_phdr=yes
6106 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6107 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6108 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6109 [Define if your target C library provides the `dl_iterate_phdr' function.])
6111 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6113 # We no longer support different GC mechanisms. Emit an error if
6114 # the user configures with --with-gc.
6116 [AS_HELP_STRING([--with-gc={page,zone}],
6117 [this option is not supported anymore. It used to choose
6118 the garbage collection mechanism to use with the compiler])],
6119 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6122 # Libraries to use on the host. This will normally be set by the top
6123 # level Makefile. Here we simply capture the value for our Makefile.
6124 if test -z "${HOST_LIBS+set}"; then
6129 # Use the system's zlib library.
6132 dnl Very limited version of automake's enable-maintainer-mode
6134 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6135 dnl maintainer-mode is disabled by default
6136 AC_ARG_ENABLE(maintainer-mode,
6137 [AS_HELP_STRING([--enable-maintainer-mode],
6138 [enable make rules and dependencies not useful
6139 (and sometimes confusing) to the casual installer])],
6140 maintainer_mode=$enableval,
6143 AC_MSG_RESULT($maintainer_mode)
6145 if test "$maintainer_mode" = "yes"; then
6152 dnl Whether to prevent multiple front-ends from linking at the same time
6154 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6155 AC_ARG_ENABLE(link-mutex,
6156 [AS_HELP_STRING([--enable-link-mutex],
6157 [avoid linking multiple front-ends at once to avoid thrashing
6158 on the build machine])],
6159 do_link_mutex=$enableval,
6161 AC_MSG_RESULT($do_link_mutex)
6163 if test "$do_link_mutex" = "yes"; then
6168 AC_SUBST(DO_LINK_MUTEX)
6174 # Make empty files to contain the specs and options for each language.
6175 # Then add #include lines to for a compiler that has specs and/or options.
6181 # These (without "all_") are set in each config-lang.in.
6182 # `language' must be a single word so is spelled singularly.
6185 all_outputs='Makefile'
6186 # List of language makefile fragments.
6188 # Additional files for gengtype
6189 all_gtfiles="$target_gtfiles"
6191 # These are the languages that are set in --enable-languages,
6192 # and are available in the GCC tree.
6193 all_selected_languages=
6195 # Add the language fragments.
6196 # Languages are added via two mechanisms. Some information must be
6197 # recorded in makefile variables, these are defined in config-lang.in.
6198 # We accumulate them and plug them into the main Makefile.
6199 # The other mechanism is a set of hooks for each of the main targets
6200 # like `clean', `install', etc.
6202 language_hooks="Make-hooks"
6204 for lang in ${srcdir}/*/config-lang.in
6207 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6209 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6210 if test "x$lang_alias" = x
6212 echo "$lang doesn't set \$language." 1>&2
6215 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6216 subdirs="$subdirs $subdir"
6218 # $gcc_subdir is where the gcc integration files are to be found
6219 # for a language, both for internal compiler purposes (compiler
6220 # sources implementing front-end to GCC tree converters), and for
6221 # build infrastructure purposes (Make-lang.in, etc.)
6223 # This will be <subdir> (relative to $srcdir) if a line like
6224 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6225 # is found in <langdir>/config-lang.in, and will remain <langdir>
6228 # Except for the language alias (fetched above), the regular
6229 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6230 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6231 # only this and the language alias.
6233 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6234 if [ "$gcc_subdir" = "" ]; then
6235 gcc_subdir="$subdir"
6238 case ",$enable_languages," in
6240 all_selected_languages="$all_selected_languages $lang_alias"
6241 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6242 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6254 . ${srcdir}/$gcc_subdir/config-lang.in
6255 if test "x$language" = x
6257 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6262 case ",$enable_languages," in
6265 for i in $subdir_requires; do
6266 test -f "${srcdir}/$i/config-lang.in" && continue
6274 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6275 if test -f $srcdir/$gcc_subdir/lang.opt; then
6276 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6277 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6279 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6280 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6282 all_languages="$all_languages $language"
6283 all_compilers="$all_compilers $compilers"
6284 all_outputs="$all_outputs $outputs"
6285 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6286 case ",$enable_languages," in
6288 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6290 AC_SUBST(enable_lto)
6297 for language in $all_selected_languages
6299 check_languages="$check_languages check-$language"
6302 # We link each language in with a set of hooks, reached indirectly via
6303 # lang.${target}. Only do so for selected languages.
6307 target_list="all.cross start.encap rest.encap tags \
6308 install-common install-man install-info install-pdf install-html dvi \
6309 pdf html uninstall info man srcextra srcman srcinfo \
6310 mostlyclean clean distclean maintainer-clean install-plugin"
6312 for t in $target_list
6315 for lang in $all_selected_languages
6319 echo "lang.$t: $x" >> Make-hooks
6323 # Option include files
6326 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6327 option_includes="option-includes.mk"
6328 AC_SUBST_FILE(option_includes)
6336 echo "dir ." > .gdbinit
6337 echo "dir ${srcdir}" >> .gdbinit
6338 if test x$gdb_needs_out_file_path = xyes
6340 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6342 if test "x$subdirs" != x; then
6345 echo "dir ${srcdir}/$s" >> .gdbinit
6348 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6349 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6351 # Put a breakpoint on __asan_report_error to help with debugging buffer
6354 *-fsanitize=address*)
6355 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6359 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6360 AC_SUBST(gcc_tooldir)
6363 # Find a directory in which to install a shared libgcc.
6365 AC_ARG_ENABLE(version-specific-runtime-libs,
6366 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6367 [specify that runtime libraries should be
6368 installed in a compiler-specific directory])])
6370 # Substitute configuration variables
6373 AC_SUBST(all_compilers)
6374 AC_SUBST(all_gtfiles)
6375 AC_SUBST(all_lang_makefrags)
6376 AC_SUBST(all_languages)
6377 AC_SUBST(all_selected_languages)
6378 AC_SUBST(build_exeext)
6379 AC_SUBST(build_install_headers_dir)
6380 AC_SUBST(build_xm_file_list)
6381 AC_SUBST(build_xm_include_list)
6382 AC_SUBST(build_xm_defines)
6383 AC_SUBST(build_file_translate)
6384 AC_SUBST(check_languages)
6385 AC_SUBST(cpp_install_dir)
6386 AC_SUBST(xmake_file)
6387 AC_SUBST(tmake_file)
6388 AC_SUBST(TM_ENDIAN_CONFIG)
6389 AC_SUBST(TM_MULTILIB_CONFIG)
6390 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6391 AC_SUBST(extra_gcc_objs)
6392 AC_SUBST(user_headers_inc_next_pre)
6393 AC_SUBST(user_headers_inc_next_post)
6394 AC_SUBST(extra_headers_list)
6395 AC_SUBST(extra_objs)
6396 AC_SUBST(extra_programs)
6397 AC_SUBST(float_h_file)
6398 AC_SUBST(gcc_config_arguments)
6399 AC_SUBST(gcc_gxx_include_dir)
6400 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6401 AC_SUBST(host_exeext)
6402 AC_SUBST(host_xm_file_list)
6403 AC_SUBST(host_xm_include_list)
6404 AC_SUBST(host_xm_defines)
6405 AC_SUBST(out_host_hook_obj)
6407 AC_SUBST(lang_opt_files)
6408 AC_SUBST(lang_specs_files)
6409 AC_SUBST(lang_tree_files)
6410 AC_SUBST(local_prefix)
6412 AC_SUBST(objc_boehm_gc)
6414 AC_SUBST(out_object_file)
6415 AC_SUBST(common_out_file)
6416 AC_SUBST(common_out_object_file)
6417 AC_SUBST(tm_file_list)
6418 AC_SUBST(tm_include_list)
6419 AC_SUBST(tm_defines)
6420 AC_SUBST(tm_p_file_list)
6421 AC_SUBST(tm_p_include_list)
6422 AC_SUBST(xm_file_list)
6423 AC_SUBST(xm_include_list)
6424 AC_SUBST(xm_defines)
6425 AC_SUBST(use_gcc_stdint)
6426 AC_SUBST(c_target_objs)
6427 AC_SUBST(cxx_target_objs)
6428 AC_SUBST(fortran_target_objs)
6429 AC_SUBST(target_cpu_default)
6431 AC_SUBST_FILE(language_hooks)
6434 if test x${build} = x${host} ; then
6435 if test x${host} = x${target} ; then
6436 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6438 echo "Links are now set up to build a cross-compiler" 1>&2
6439 echo " from ${host} to ${target}." 1>&2
6442 if test x${host} = x${target} ; then
6443 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6444 echo " for ${target}." 1>&2
6446 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6447 echo " from ${host} to ${target}." 1>&2
6451 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6452 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6454 AC_ARG_VAR(ISLLIBS,[How to link isl])
6455 AC_ARG_VAR(ISLINC,[How to find isl include files])
6456 if test "x${ISLLIBS}" != "x" ; then
6457 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6461 AC_SUBST(pluginlibs)
6462 AC_SUBST(enable_plugin)
6463 if test x"$enable_plugin" = x"yes"; then
6464 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6468 # Enable --enable-host-shared
6469 AC_ARG_ENABLE(host-shared,
6470 [AS_HELP_STRING([--enable-host-shared],
6471 [build host code as shared libraries])],
6472 [PICFLAG=-fPIC], [PICFLAG=])
6473 AC_SUBST(enable_host_shared)
6477 AC_ARG_ENABLE(libquadmath-support,
6478 [AS_HELP_STRING([--disable-libquadmath-support],
6479 [disable libquadmath support for Fortran])],
6480 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6481 ENABLE_LIBQUADMATH_SUPPORT=yes)
6482 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6483 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6484 [Define to 1 to enable libquadmath support])
6488 # Specify what hash style to use by default.
6489 AC_ARG_WITH([linker-hash-style],
6490 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6491 [specify the linker hash style])],
6492 [case x"$withval" in
6494 LINKER_HASH_STYLE=sysv
6497 LINKER_HASH_STYLE=gnu
6500 LINKER_HASH_STYLE=both
6503 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6506 [LINKER_HASH_STYLE=''])
6507 if test x"${LINKER_HASH_STYLE}" != x; then
6508 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6509 [The linker hash style])
6512 # Specify what should be the default of -fdiagnostics-color option.
6513 AC_ARG_WITH([diagnostics-color],
6514 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6515 [specify the default of -fdiagnostics-color option
6516 auto-if-env stands for -fdiagnostics-color=auto if
6517 GCC_COLOR environment variable is present and
6518 -fdiagnostics-color=never otherwise])],
6519 [case x"$withval" in
6521 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6524 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6527 DIAGNOSTICS_COLOR_DEFAULT=-1
6530 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6533 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6536 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6537 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6538 [The default for -fdiagnostics-color option])
6540 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6541 # of jit/jit-playback.c.
6542 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6543 echo "gcc_driver_version: ${gcc_driver_version}"
6544 cat > gcc-driver-name.h <<EOF
6545 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6548 # Check whether --enable-default-pie was given.
6549 AC_ARG_ENABLE(default-pie,
6550 [AS_HELP_STRING([--enable-default-pie],
6551 [enable Position Independent Executable as default])],
6552 enable_default_pie=$enableval,
6553 enable_default_pie=no)
6554 if test x$enable_default_pie = xyes ; then
6555 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6556 [Define if your target supports default PIE and it is enabled.])
6558 AC_SUBST([enable_default_pie])
6560 # Check if -fno-PIE works.
6561 AC_CACHE_CHECK([for -fno-PIE option],
6563 [saved_CXXFLAGS="$CXXFLAGS"
6564 CXXFLAGS="$CXXFLAGS -fno-PIE"
6565 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6566 [gcc_cv_c_no_fpie=yes],
6567 [gcc_cv_c_no_fpie=no])
6568 CXXFLAGS="$saved_CXXFLAGS"])
6569 if test "$gcc_cv_c_no_fpie" = "yes"; then
6570 NO_PIE_CFLAGS="-fno-PIE"
6572 AC_SUBST([NO_PIE_CFLAGS])
6574 # Check if -no-pie works.
6575 AC_CACHE_CHECK([for -no-pie option],
6577 [saved_LDFLAGS="$LDFLAGS"
6578 LDFLAGS="$LDFLAGS -no-pie"
6579 AC_LINK_IFELSE([int main(void) {return 0;}],
6580 [gcc_cv_no_pie=yes],
6582 LDFLAGS="$saved_LDFLAGS"])
6583 if test "$gcc_cv_no_pie" = "yes"; then
6584 NO_PIE_FLAG="-no-pie"
6586 AC_SUBST([NO_PIE_FLAG])
6588 # Check linker supports '-z bndplt'
6589 ld_bndplt_support=no
6590 AC_MSG_CHECKING(linker -z bndplt option)
6591 if test x"$ld_is_gold" = xno; then
6592 if test $in_tree_ld = yes ; then
6593 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6594 ld_bndplt_support=yes
6596 elif test x$gcc_cv_ld != x; then
6597 # Check if linker supports -a bndplt option
6598 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6599 ld_bndplt_support=yes
6603 if test x"$ld_bndplt_support" = xyes; then
6604 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6605 [Define if your linker supports -z bndplt])
6607 AC_MSG_RESULT($ld_bndplt_support)
6609 # Check linker supports '--push-state'/'--pop-state'
6610 ld_pushpopstate_support=no
6611 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6612 if test x"$ld_is_gold" = xno; then
6613 if test $in_tree_ld = yes ; then
6614 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6615 ld_pushpopstate_support=yes
6617 elif test x$gcc_cv_ld != x; then
6618 # Check if linker supports --push-state/--pop-state options
6619 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6620 ld_pushpopstate_support=yes
6624 if test x"$ld_pushpopstate_support" = xyes; then
6625 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6626 [Define if your linker supports --push-state/--pop-state])
6628 AC_MSG_RESULT($ld_pushpopstate_support)
6630 # Configure the subdirectories
6631 # AC_CONFIG_SUBDIRS($subdirs)
6633 # Create the Makefile
6634 # and configure language subdirectories
6635 AC_CONFIG_FILES($all_outputs)
6637 AC_CONFIG_COMMANDS([default],
6639 case ${CONFIG_HEADERS} in
6640 *auto-host.h:config.in*)
6643 # Make sure all the subdirs exist.
6644 for d in $subdirs doc build common c-family
6646 test -d $d || mkdir $d
6649 [subdirs='$subdirs'])