2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2016 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 $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Used for constructing correct paths for offload compilers.
42 real_target_noncanonical=${target_noncanonical}
45 # Determine the target- and build-specific subdirectories
48 # Set program_transform_name
51 # Check for bogus environment variables.
52 # Test if LIBRARY_PATH contains the notation for the current directory
53 # since this would lead to problems installing/building glibc.
54 # LIBRARY_PATH contains the current directory if one of the following
56 # - one of the terminals (":" and ";") is the first or last sign
57 # - two terminals occur directly after each other
58 # - the path contains an element with a dot in it
59 AC_MSG_CHECKING(LIBRARY_PATH variable)
61 case ${LIBRARY_PATH} in
62 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
63 library_path_setting="contains current directory"
66 library_path_setting="ok"
70 AC_MSG_RESULT($library_path_setting)
71 if test "$library_path_setting" != "ok"; then
73 *** LIBRARY_PATH shouldn't contain the current directory when
74 *** building gcc. Please change the environment variable
75 *** and run configure again.])
78 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
79 # since this would lead to problems installing/building glibc.
80 # GCC_EXEC_PREFIX contains the current directory if one of the following
82 # - one of the terminals (":" and ";") is the first or last sign
83 # - two terminals occur directly after each other
84 # - the path contains an element with a dot in it
85 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
87 case ${GCC_EXEC_PREFIX} in
88 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
89 gcc_exec_prefix_setting="contains current directory"
92 gcc_exec_prefix_setting="ok"
96 AC_MSG_RESULT($gcc_exec_prefix_setting)
97 if test "$gcc_exec_prefix_setting" != "ok"; then
99 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
100 *** building gcc. Please change the environment variable
101 *** and run configure again.])
108 # Specify the local prefix
110 AC_ARG_WITH(local-prefix,
111 [AS_HELP_STRING([--with-local-prefix=DIR],
112 [specifies directory to put local include])],
113 [case "${withval}" in
114 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
116 *) local_prefix=$with_local_prefix ;;
119 # Default local prefix if it is empty
120 if test x$local_prefix = x; then
121 local_prefix=/usr/local
124 AC_ARG_WITH([native-system-header-dir],
125 [ --with-native-system-header-dir=dir
126 use dir as the directory to look for standard
127 system header files in. Defaults to /usr/include.],
129 case ${with_native_system_header_dir} in
130 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
131 /* | [[A-Za-z]]:[[\\/]]*) ;;
132 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
134 configured_native_system_header_dir="${withval}"
135 ], [configured_native_system_header_dir=])
137 AC_ARG_WITH(build-sysroot,
138 [AS_HELP_STRING([--with-build-sysroot=sysroot],
139 [use sysroot as the system root during the build])],
140 [if test x"$withval" != x ; then
141 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
143 [SYSROOT_CFLAGS_FOR_TARGET=])
144 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
146 if test "x$prefix" = xNONE; then
147 test_prefix=/usr/local
151 if test "x$exec_prefix" = xNONE; then
152 test_exec_prefix=$test_prefix
154 test_exec_prefix=$exec_prefix
158 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
159 [search for usr/lib, usr/include, et al, within DIR])],
161 case ${with_sysroot} in
163 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
165 case ${with_sysroot} in
166 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
167 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
170 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
171 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
173 case ${TARGET_SYSTEM_ROOT} in
174 "${test_prefix}"|"${test_prefix}/"*|\
175 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
176 '${prefix}'|'${prefix}/'*|\
177 '${exec_prefix}'|'${exec_prefix}/'*)
178 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
179 TARGET_SYSTEM_ROOT_DEFINE="$t"
184 TARGET_SYSTEM_ROOT_DEFINE=
185 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
187 AC_SUBST(TARGET_SYSTEM_ROOT)
188 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
189 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
191 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
192 # passed in by the toplevel make and thus we'd get different behavior
193 # depending on where we built the sources.
195 # Specify the g++ header file directory
196 AC_ARG_WITH(gxx-include-dir,
197 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
198 [specifies directory to put g++ header files])],
199 [case "${withval}" in
200 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
202 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
205 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
206 if test x${gcc_gxx_include_dir} = x; then
207 if test x${enable_version_specific_runtime_libs} = xyes; then
208 gcc_gxx_include_dir='${libsubdir}/include/c++'
210 libstdcxx_incdir='include/c++/$(version)'
211 if test x$host != x$target; then
212 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
214 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
218 gcc_gxx_include_dir_add_sysroot=0
219 if test "${with_sysroot+set}" = set; then
220 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
221 if test "${gcc_gxx_without_sysroot}"; then
222 if test x${with_sysroot} != x/; then
223 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
225 gcc_gxx_include_dir_add_sysroot=1
229 AC_ARG_WITH(cpp_install_dir,
230 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
231 [install the user visible C preprocessor in DIR
232 (relative to PREFIX) as well as PREFIX/bin])],
233 [if test x$withval = xyes; then
234 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
235 elif test x$withval != xno; then
236 cpp_install_dir=$withval
239 # We would like to our source tree to be readonly. However when releases or
240 # pre-releases are generated, the flex/bison generated files as well as the
241 # various formats of manuals need to be included along with the rest of the
242 # sources. Therefore we have --enable-generated-files-in-srcdir to do
245 AC_MSG_CHECKING([whether to place generated files in the source directory])
246 dnl generated-files-in-srcdir is disabled by default
247 AC_ARG_ENABLE(generated-files-in-srcdir,
248 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
249 [put copies of generated files in source dir
250 intended for creating source tarballs for users
251 without texinfo bison or flex])],
252 generated_files_in_srcdir=$enableval,
253 generated_files_in_srcdir=no)
255 AC_MSG_RESULT($generated_files_in_srcdir)
257 if test "$generated_files_in_srcdir" = "yes"; then
264 # -------------------
265 # Find default linker
266 # -------------------
270 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
271 gnu_ld_flag="$with_gnu_ld",
275 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
279 # With pre-defined ld
281 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
282 DEFAULT_LINKER="$with_ld")
283 if test x"${DEFAULT_LINKER+set}" = x"set"; then
284 if test ! -x "$DEFAULT_LINKER"; then
285 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
286 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
288 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
291 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
292 [Define to enable the use of a default linker.])
295 AC_MSG_CHECKING([whether a default linker was specified])
296 if test x"${DEFAULT_LINKER+set}" = x"set"; then
297 if test x"$gnu_ld_flag" = x"no"; then
298 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
300 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
306 # With demangler in GNU ld
307 AC_ARG_WITH(demangler-in-ld,
308 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
309 demangler_in_ld="$with_demangler_in_ld",
312 # ----------------------
313 # Find default assembler
314 # ----------------------
318 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
319 gas_flag="$with_gnu_as",
323 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
324 DEFAULT_ASSEMBLER="$with_as")
325 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
326 if test ! -x "$DEFAULT_ASSEMBLER"; then
327 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
328 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
331 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
332 [Define to enable the use of a default assembler.])
335 AC_MSG_CHECKING([whether a default assembler was specified])
336 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
337 if test x"$gas_flag" = x"no"; then
338 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
340 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
350 # If a non-executable a.out is present (e.g. created by GNU as above even if
351 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
352 # file, even when creating an executable, so an execution test fails.
353 # Remove possible default executable files to avoid this.
355 # FIXME: This really belongs into AC_PROG_CC and can be removed once
356 # Autoconf includes it.
357 rm -f a.out a.exe b.out
359 # Find the native compiler
362 ACX_PROG_GNAT([-I"$srcdir"/ada])
364 # Do configure tests with the C++ compiler, since that's what we build with.
367 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
368 # optimizations to be activated explicitly by the toplevel.
371 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
372 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
377 # Determine PICFLAG for target gnatlib.
378 GCC_PICFLAG_FOR_TARGET
379 AC_SUBST(PICFLAG_FOR_TARGET)
381 # -------------------------
382 # Check C compiler features
383 # -------------------------
385 AC_USE_SYSTEM_EXTENSIONS
391 # sizeof(char) is 1 by definition.
392 AC_CHECK_SIZEOF(void *)
393 AC_CHECK_SIZEOF(short)
395 AC_CHECK_SIZEOF(long)
396 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
398 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
399 AC_MSG_ERROR([uint64_t or int64_t not found])
402 # check what underlying integer type int64_t uses
403 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
404 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
408 template <typename T> struct X { };
410 struct X<long> { typedef long t; };
411 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
412 if test "$ac_cv_int64_t_type" = "long"; then
413 AC_DEFINE(INT64_T_IS_LONG, 1,
414 [Define if int64_t uses long as underlying type.])
416 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
420 template <typename T> struct X { };
422 struct X<long long> { typedef long long t; };
423 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
426 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
427 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
429 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
430 if test $ac_cv_std_swap_in_utility = yes; then
431 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
432 [Define if <utility> defines std::swap.])
435 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
436 # If the host compiler is affected by the bug, and we build with optimization
437 # enabled (which happens e.g. when cross-compiling), the pool allocator may
438 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
439 # Since there is no reliable feature check for the presence of this bug,
440 # we simply use a GCC version number check. (This should never trigger for
441 # stages 2 or 3 of a native bootstrap.)
443 if test "$GCC" = yes; then
444 saved_CXXFLAGS="$CXXFLAGS"
446 # The following test compilation will succeed if and only if $CXX accepts
447 # -fno-strict-aliasing *and* is older than GCC 4.3.
448 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
449 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
451 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
452 #error compiler not affected by placement new aliasing bug
455 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
456 [AC_MSG_RESULT([no])])
458 CXXFLAGS="$saved_CXXFLAGS"
460 AC_SUBST(aliasing_flags)
464 # ---------------------
465 # Warnings and checking
466 # ---------------------
468 # Check $CC warning features (if it's GCC).
469 # We want to use -pedantic, but we don't want warnings about
473 # * C++11 narrowing conversions in { }
474 # So, we only use -pedantic if we can disable those warnings.
476 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
477 AC_ARG_ENABLE(build-format-warnings,
478 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
479 [],[enable_build_format_warnings=yes])
480 AS_IF([test $enable_build_format_warnings = no],
481 [wf_opt=-Wno-format],[wf_opt=])
482 ACX_PROG_CXX_WARNING_OPTS(
483 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
484 ACX_PROG_CC_WARNING_OPTS(
485 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
487 ACX_PROG_CXX_WARNING_OPTS(
488 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
489 ACX_PROG_CXX_WARNING_OPTS(
490 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
491 ACX_PROG_CC_WARNING_OPTS(
492 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
493 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
494 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
495 [-Wno-overlength-strings])), [strict_warn])
496 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
498 # The above macros do nothing if the compiler is not GCC. However, the
499 # Makefile has more goo to add other flags, so these variables are used
500 # to enable warnings only for GCC.
503 if test "x$GCC" = "xyes"; then
504 warn_cflags='$(GCC_WARN_CFLAGS)'
505 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
507 AC_SUBST(warn_cflags)
508 AC_SUBST(warn_cxxflags)
510 # Disable exceptions and RTTI if building with g++
511 ACX_PROG_CC_WARNING_OPTS(
512 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
515 # Enable expensive internal checks
517 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
521 AC_ARG_ENABLE(checking,
522 [AS_HELP_STRING([[--enable-checking[=LIST]]],
523 [enable expensive run-time checks. With LIST,
524 enable only specific categories of checks.
525 Categories are: yes,no,all,none,release.
526 Flags are: assert,df,fold,gc,gcac,gimple,misc,
527 rtlflag,rtl,runtime,tree,valgrind,types])],
528 [ac_checking_flags="${enableval}"],[
529 # Determine the default checks.
530 if test x$is_release = x ; then
531 ac_checking_flags=yes
533 ac_checking_flags=release
535 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
536 for check in release $ac_checking_flags
539 # these set all the flags to specific states
540 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
541 ac_fold_checking= ; ac_gc_checking=1 ;
542 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
543 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
544 ac_tree_checking=1 ; ac_valgrind_checking= ;
545 ac_types_checking=1 ;;
546 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
547 ac_fold_checking= ; ac_gc_checking= ;
548 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
549 ac_rtlflag_checking= ; ac_runtime_checking= ;
550 ac_tree_checking= ; ac_valgrind_checking= ;
551 ac_types_checking= ;;
552 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
553 ac_fold_checking=1 ; ac_gc_checking=1 ;
554 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
555 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
556 ac_tree_checking=1 ; ac_valgrind_checking= ;
557 ac_types_checking=1 ;;
558 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
559 ac_fold_checking= ; ac_gc_checking= ;
560 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
561 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
562 ac_tree_checking= ; ac_valgrind_checking= ;
563 ac_types_checking= ;;
564 # these enable particular checks
565 assert) ac_assert_checking=1 ;;
566 df) ac_df_checking=1 ;;
567 fold) ac_fold_checking=1 ;;
568 gc) ac_gc_checking=1 ;;
569 gcac) ac_gc_always_collect=1 ;;
570 gimple) ac_gimple_checking=1 ;;
571 misc) ac_checking=1 ;;
572 rtl) ac_rtl_checking=1 ;;
573 rtlflag) ac_rtlflag_checking=1 ;;
574 runtime) ac_runtime_checking=1 ;;
575 tree) ac_tree_checking=1 ;;
576 types) ac_types_checking=1 ;;
577 valgrind) ac_valgrind_checking=1 ;;
578 *) AC_MSG_ERROR(unknown check category $check) ;;
584 if test x$ac_checking != x ; then
585 AC_DEFINE(CHECKING_P, 1,
586 [Define to 1 if you want more run-time sanity checks. This one gets a grab
587 bag of miscellaneous but relatively cheap checks.])
588 nocommon_flag=-fno-common
590 AC_DEFINE(CHECKING_P, 0)
592 AC_SUBST(nocommon_flag)
593 if test x$ac_df_checking != x ; then
594 AC_DEFINE(ENABLE_DF_CHECKING, 1,
595 [Define if you want more run-time sanity checks for dataflow.])
597 if test x$ac_assert_checking != x ; then
598 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
599 [Define if you want assertions enabled. This is a cheap check.])
601 if test x$ac_gimple_checking != x ; then
602 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
603 [Define if you want operations on GIMPLE (the basic data structure of
604 the high-level optimizers) to be checked for dynamic type safety at
605 runtime. This is moderately expensive.])
607 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
608 if test x$ac_runtime_checking != x ; then
609 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
610 [Define if you want runtime assertions enabled. This is a cheap check.])
612 if test x$ac_tree_checking != x ; then
613 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
614 [Define if you want all operations on trees (the basic data
615 structure of the front ends) to be checked for dynamic type safety
616 at runtime. This is moderately expensive.
620 if test x$ac_types_checking != x ; then
621 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
622 [Define if you want all gimple types to be verified after gimplifiation.
626 AC_SUBST(TREECHECKING)
627 if test x$ac_rtl_checking != x ; then
628 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
629 [Define if you want all operations on RTL (the basic data structure
630 of the optimizer and back end) to be checked for dynamic type safety
631 at runtime. This is quite expensive.])
633 if test x$ac_rtlflag_checking != x ; then
634 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
635 [Define if you want RTL flag accesses to be checked against the RTL
636 codes that are supported for each access macro. This is relatively
639 if test x$ac_gc_checking != x ; then
640 AC_DEFINE(ENABLE_GC_CHECKING, 1,
641 [Define if you want the garbage collector to do object poisoning and
642 other memory allocation checks. This is quite expensive.])
644 if test x$ac_gc_always_collect != x ; then
645 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
646 [Define if you want the garbage collector to operate in maximally
647 paranoid mode, validating the entire heap and collecting garbage at
648 every opportunity. This is extremely expensive.])
650 if test x$ac_fold_checking != x ; then
651 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
652 [Define if you want fold checked that it never destructs its argument.
653 This is quite expensive.])
655 valgrind_path_defines=
658 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
659 dnl # an if statement. This was the source of very frustrating bugs
660 dnl # in converting to autoconf 2.5x!
661 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
663 # It is certainly possible that there's valgrind but no valgrind.h.
664 # GCC relies on making annotations so we must have both.
665 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
666 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
667 [[#include <valgrind/memcheck.h>
668 #ifndef VALGRIND_DISCARD
669 #error VALGRIND_DISCARD not defined
671 [gcc_cv_header_valgrind_memcheck_h=yes],
672 [gcc_cv_header_valgrind_memcheck_h=no])
673 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
674 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
675 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
676 [[#include <memcheck.h>
677 #ifndef VALGRIND_DISCARD
678 #error VALGRIND_DISCARD not defined
680 [gcc_cv_header_memcheck_h=yes],
681 [gcc_cv_header_memcheck_h=no])
682 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
683 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
684 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
685 [Define if valgrind's valgrind/memcheck.h header is installed.])
687 if test $gcc_cv_header_memcheck_h = yes; then
688 AC_DEFINE(HAVE_MEMCHECK_H, 1,
689 [Define if valgrind's memcheck.h header is installed.])
692 if test x$ac_valgrind_checking != x ; then
693 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
694 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
695 if test "x$valgrind_path" = "x" \
696 || (test $have_valgrind_h = no \
697 && test $gcc_cv_header_memcheck_h = no \
698 && test $gcc_cv_header_valgrind_memcheck_h = no); then
699 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
701 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
702 valgrind_command="$valgrind_path -q"
703 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
704 [Define if you want to run subprograms and generated programs
705 through valgrind (a memory checker). This is extremely expensive.])
707 AC_SUBST(valgrind_path_defines)
708 AC_SUBST(valgrind_command)
710 # Enable code coverage collection
711 AC_ARG_ENABLE(coverage,
712 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
713 [enable compiler's code coverage collection.
714 Use to measure compiler performance and locate
715 unused parts of the compiler. With LEVEL, specify
716 optimization. Values are opt, noopt,
718 [case "${enableval}" in
720 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
723 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
726 # a.k.a. --disable-coverage
730 AC_MSG_ERROR(unknown coverage setting $enableval)
734 AC_SUBST(coverage_flags)
736 AC_ARG_ENABLE(gather-detailed-mem-stats,
737 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
738 [enable detailed memory allocation stats gathering])], [],
739 [enable_gather_detailed_mem_stats=no])
740 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
741 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
742 [Define to enable detailed memory allocation stats gathering.])
744 AC_ARG_ENABLE(valgrind-annotations,
745 [AS_HELP_STRING([--enable-valgrind-annotations],
746 [enable valgrind runtime interaction])], [],
747 [enable_valgrind_annotations=no])
748 if test x$enable_valgrind_annotations != xno \
749 || test x$ac_valgrind_checking != x; then
750 if (test $have_valgrind_h = no \
751 && test $gcc_cv_header_memcheck_h = no \
752 && test $gcc_cv_header_valgrind_memcheck_h = no); then
753 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
755 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
756 [Define to get calls to the valgrind runtime enabled.])
759 # -------------------------------
760 # Miscenalleous configure options
761 # -------------------------------
765 [AS_HELP_STRING([--with-stabs],
766 [arrange to use stabs instead of host debug format])],
770 # Determine whether or not multilibs are enabled.
771 AC_ARG_ENABLE(multilib,
772 [AS_HELP_STRING([--enable-multilib],
773 [enable library support for multiple ABIs])],
774 [], [enable_multilib=yes])
775 AC_SUBST(enable_multilib)
777 # Determine whether or not multiarch is enabled.
778 AC_ARG_ENABLE(multiarch,
779 [AS_HELP_STRING([--enable-multiarch],
780 [enable support for multiarch paths])],
781 [case "${enableval}" in
782 yes|no|auto) enable_multiarch=$enableval;;
783 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
784 esac], [enable_multiarch=auto])
785 if test x${enable_multiarch} = xauto; then
786 if test x${with_native_system_header_dir} != x; then
787 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
790 if test x$host != x$target && test "x$with_sysroot" = x; then
791 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
795 AC_MSG_CHECKING(for multiarch configuration)
796 AC_SUBST(enable_multiarch)
797 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
799 # needed for setting the multiarch name for soft-float/hard-float ABIs
803 # Enable __cxa_atexit for C++.
804 AC_ARG_ENABLE(__cxa_atexit,
805 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
808 # Enable C extension for decimal float if target supports it.
809 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
811 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
812 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
813 [Define to 1 to enable decimal float extension to C.])
815 # Use default_decimal_float for dependency.
816 enable_decimal_float=$default_decimal_float
818 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
819 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
820 [Define to 1 to specify that we are using the BID decimal floating
821 point format instead of DPD])
823 # Enable C extension for fixed-point arithmetic.
824 AC_ARG_ENABLE(fixed-point,
825 [AS_HELP_STRING([--enable-fixed-point],
826 [enable fixed-point arithmetic extension to C])],
831 enable_fixed_point=yes
835 enable_fixed_point=yes
838 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
839 enable_fixed_point=no
843 AC_SUBST(enable_fixed_point)
845 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
846 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
847 [Define to 1 to enable fixed-point arithmetic extension to C.])
850 # Pass with no value to take the default
851 # Pass with a value to specify a thread package
852 AC_ARG_ENABLE(threads,
853 [AS_HELP_STRING([[--enable-threads[=LIB]]],
854 [enable thread usage for target GCC,
855 using LIB thread package])],,
859 [AS_HELP_STRING([--enable-tls],
860 [enable or disable generation of tls code
861 overriding the assembler check for tls support])],
865 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
866 Valid choices are 'yes' and 'no'.]) ;;
870 AC_ARG_ENABLE(objc-gc,
871 [AS_HELP_STRING([--enable-objc-gc],
872 [enable the use of Boehm's garbage collector with
873 the GNU Objective-C runtime])],
874 if test x$enable_objc_gc = xno; then
882 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
883 dwarf2="$with_dwarf2",
886 AC_ARG_ENABLE(shared,
887 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
889 case $enable_shared in
893 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
894 for pkg in $enableval; do
895 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
902 ], [enable_shared=yes])
903 AC_SUBST(enable_shared)
906 [AS_HELP_STRING([--with-specs=SPECS],
907 [add SPECS to driver command-line processing])],
908 [CONFIGURE_SPECS=$withval],
911 AC_SUBST(CONFIGURE_SPECS)
913 ACX_PKGVERSION([Linaro GCC `cat $srcdir/LINARO-VERSION`])
914 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
916 # Sanity check enable_languages in case someone does not run the toplevel
917 # configure # script.
918 AC_ARG_ENABLE(languages,
919 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
920 [case ,${enable_languages}, in
922 # go safe -- we cannot be much sure without the toplevel
924 # analysis of which target libs are present and usable
928 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
933 enable_languages=c,${enable_languages}
936 [enable_languages=c])
938 if test x"$enable_as_accelerator_for" != x; then
939 AC_DEFINE(ACCEL_COMPILER, 1,
940 [Define if this compiler should be built as the offload target compiler.])
941 enable_as_accelerator=yes
944 # In this case we expect offload compiler to be built as native, so we
945 # need to rename the driver to avoid clashes with host's drivers.
946 program_transform_name="s&^&${target}-&" ;;
948 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
949 program_transform_name=`echo $program_transform_name | sed $sedscript`
950 accel_dir_suffix=/accel/${target_noncanonical}
951 real_target_noncanonical=${enable_as_accelerator_for}
953 AC_SUBST(enable_as_accelerator)
954 AC_SUBST(real_target_noncanonical)
955 AC_SUBST(accel_dir_suffix)
957 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
958 tgt=`echo $tgt | sed 's/=.*//'`
960 if echo "$tgt" | grep "^hsa" > /dev/null ; then
966 if test x"$offload_targets" = x; then
969 offload_targets="$offload_targets,$tgt"
972 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
973 [Define to offload targets, separated by commas.])
974 if test x"$enable_offloading" != x; then
975 AC_DEFINE(ENABLE_OFFLOADING, 1,
976 [Define this to enable support for offloading.])
978 AC_DEFINE(ENABLE_OFFLOADING, 0,
979 [Define this to enable support for offloading.])
982 if test x"$enable_hsa" = x1 ; then
983 AC_DEFINE(ENABLE_HSA, 1,
984 [Define this to enable support for generating HSAIL.])
987 AC_ARG_WITH(multilib-list,
988 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
990 with_multilib_list=default)
992 # -------------------------
993 # Checks for other programs
994 # -------------------------
998 # Find some useful tools
1000 # We need awk to create options.c and options.h.
1001 # Bail out if it's missing.
1003 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1010 AC_SUBST(ranlib_flags)
1014 # See if cmp has --ignore-initial.
1015 gcc_AC_PROG_CMP_IGNORE_INITIAL
1017 # See if we have the mktemp command.
1018 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1020 # See if makeinfo has been installed and is modern enough
1021 # that we can use it.
1022 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1023 [GNU texinfo.* \([0-9][0-9.]*\)],
1024 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1025 if test $gcc_cv_prog_makeinfo_modern = no; then
1027 *** Makeinfo is missing or too old.
1028 *** Info documentation will not be built.])
1033 AC_SUBST(BUILD_INFO)
1035 # Is pod2man recent enough to regenerate manpages?
1036 AC_MSG_CHECKING([for recent Pod::Man])
1037 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1039 GENERATED_MANPAGES=generated-manpages
1044 AC_SUBST(GENERATED_MANPAGES)
1046 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1049 dnl Don't use AC_PROG_LEX; we insist on flex.
1050 dnl LEXLIB is not useful in gcc.
1051 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1054 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1056 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1057 # check for build == host before using them.
1060 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1061 && test -d ../binutils ; then
1062 NM='${objdir}/../binutils/nm-new'
1064 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1068 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1069 && test -d ../binutils ; then
1070 AR='${objdir}/../binutils/ar'
1072 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1075 # The jit documentation looks better if built with sphinx, but can be
1076 # built with texinfo if sphinx is not available.
1077 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1078 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1080 # --------------------
1081 # Checks for C headers
1082 # --------------------
1084 # Need to reject headers which give warnings, so that the -Werror bootstrap
1085 # works later. *sigh* This needs to come before all header checks.
1092 AC_HEADER_TIOCGWINSZ
1093 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1094 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1095 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1096 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1098 # Check for thread headers.
1099 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1100 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1102 # These tests can't be done till we know if we have limits.h.
1106 # ----------------------
1107 # Checks for C++ headers
1108 # ----------------------
1110 dnl Autoconf will give an error in the configure script if there is no
1111 dnl C++ preprocessor. Hack to prevent that.
1112 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1114 m4_popdef([AC_MSG_ERROR])[]dnl
1116 AC_CHECK_HEADERS(unordered_map)
1117 AC_CHECK_HEADERS(tr1/unordered_map)
1118 AC_CHECK_HEADERS(ext/hash_map)
1121 # Dependency checking.
1125 AC_CONFIG_COMMANDS([gccdepdir],[
1126 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1127 for lang in $subdirs c-family common
1129 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1130 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1132 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1139 # These libraries may be used by collect2.
1140 # We may need a special search path to get them linked.
1141 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1143 for libs in '' -lld -lmld \
1144 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1145 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1148 AC_TRY_LINK_FUNC(ldopen,
1149 [gcc_cv_collect2_libs="$libs"; break])
1152 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1153 case $gcc_cv_collect2_libs in
1155 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1157 AC_SUBST(COLLECT2_LIBS)
1159 # When building Ada code on Alpha, we need exc_resume which is usually in
1160 # -lexc. So test for it.
1163 AC_SEARCH_LIBS(exc_resume, exc)
1166 AC_SUBST(GNAT_LIBEXC)
1168 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1171 AC_SEARCH_LIBS(kstat_open, kstat)
1172 EXTRA_GCC_LIBS="$LIBS"
1174 AC_SUBST(EXTRA_GCC_LIBS)
1176 # Some systems put ldexp and frexp in libm instead of libc; assume
1177 # they're both in the same place. jcf-dump needs them.
1180 AC_SEARCH_LIBS(ldexp, m)
1185 # Use <inttypes.h> only if it exists,
1186 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1188 AC_MSG_CHECKING(for inttypes.h)
1189 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1190 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1191 [[#define __STDC_FORMAT_MACROS
1192 #include <sys/types.h>
1193 #include <inttypes.h>]],
1198 [gcc_cv_header_inttypes_h=yes],
1199 [gcc_cv_header_inttypes_h=no])])
1200 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1201 if test $gcc_cv_header_inttypes_h = yes; then
1202 AC_DEFINE(HAVE_INTTYPES_H, 1,
1203 [Define if you have a working <inttypes.h> header file.])
1206 dnl Disabled until we have a complete test for buggy enum bitfields.
1207 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1209 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1210 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1211 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1212 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1213 putchar_unlocked putc_unlocked)
1214 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1215 popen sysconf strsignal getrusage nl_langinfo \
1216 gettimeofday mbstowcs wcswidth mmap setlocale \
1217 gcc_UNLOCKED_FUNCS madvise)
1219 if test x$ac_cv_func_mbstowcs = xyes; then
1220 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1221 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1227 [gcc_cv_func_mbstowcs_works=yes],
1228 [gcc_cv_func_mbstowcs_works=no],
1229 [gcc_cv_func_mbstowcs_works=yes])])
1230 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1231 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1232 [Define this macro if mbstowcs does not crash when its
1233 first argument is NULL.])
1237 AC_CHECK_TYPE(ssize_t, int)
1238 AC_CHECK_TYPE(caddr_t, char *)
1240 GCC_AC_FUNC_MMAP_BLACKLIST
1244 # Under VMS, vfork works very differently than on Unix. The standard test
1245 # won't work, and it isn't easily adaptable. It makes more sense to
1247 ac_cv_func_vfork_works=yes
1254 # Until we have in-tree GNU iconv:
1256 if test -f "$LTLIBICONV"; then
1257 LIBICONV_DEP=$LTLIBICONV
1259 AC_SUBST(LIBICONV_DEP)
1265 # We will need to find libiberty.h and ansidecl.h
1266 saved_CFLAGS="$CFLAGS"
1267 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1268 saved_CXXFLAGS="$CXXFLAGS"
1269 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1271 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1272 # normal autoconf function for these. But force definition of
1273 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1274 # basename handling in libiberty.h.
1275 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1276 #undef HAVE_DECL_BASENAME
1277 #define HAVE_DECL_BASENAME 1
1278 #include "ansidecl.h"
1279 #include "system.h"])
1281 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1282 madvise stpcpy strnlen strsignal strverscmp \
1283 strtol strtoul strtoll strtoull setenv unsetenv \
1284 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1285 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1286 #include "ansidecl.h"
1287 #include "system.h"])
1289 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1290 #include "ansidecl.h"
1292 #ifdef HAVE_SYS_RESOURCE_H
1293 #include <sys/resource.h>
1297 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1298 #include "ansidecl.h"
1300 #ifdef HAVE_SYS_RESOURCE_H
1301 #include <sys/resource.h>
1303 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1304 [Define to `long' if <sys/resource.h> doesn't define.])])
1306 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1307 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1308 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1309 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1310 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1311 #include "ansidecl.h"
1320 gcc_AC_CHECK_DECLS(times, , ,[
1321 #include "ansidecl.h"
1323 #ifdef HAVE_SYS_TIMES_H
1324 #include <sys/times.h>
1328 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1329 #include "ansidecl.h"
1334 # More time-related stuff.
1335 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1336 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1337 #include "ansidecl.h"
1339 #ifdef HAVE_SYS_TIMES_H
1340 #include <sys/times.h>
1342 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1343 if test $ac_cv_struct_tms = yes; then
1344 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1345 [Define if <sys/times.h> defines struct tms.])
1348 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1349 # revisit after autoconf 2.50.
1350 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1351 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1352 #include "ansidecl.h"
1354 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1355 if test $gcc_cv_type_clock_t = yes; then
1356 AC_DEFINE(HAVE_CLOCK_T, 1,
1357 [Define if <time.h> defines clock_t.])
1360 # Check if F_SETLKW is supported by fcntl.
1361 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1362 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1363 #include <fcntl.h>]], [[
1369 return fcntl (1, F_SETLKW, &fl);]])],
1370 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1371 if test $ac_cv_f_setlkw = yes; then
1372 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1373 [Define if F_SETLKW supported by fcntl.])
1376 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1377 CFLAGS="$saved_CFLAGS"
1378 CXXFLAGS="$saved_CXXFLAGS"
1380 # mkdir takes a single argument on some systems.
1381 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1389 # With Setjmp/Longjmp based exception handling.
1390 AC_ARG_ENABLE(sjlj-exceptions,
1391 [AS_HELP_STRING([--enable-sjlj-exceptions],
1392 [arrange to use setjmp/longjmp exception handling])],
1395 if test $enableval != yes; then
1396 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1401 force_sjlj_exceptions=yes],
1404 force_sjlj_exceptions=yes
1408 force_sjlj_exceptions=yes
1412 force_sjlj_exceptions=no
1415 if test $force_sjlj_exceptions = yes; then
1416 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1417 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1418 [Define 0/1 to force the choice for exception handling model.])
1421 # --------------------------------------------------------
1422 # Build, host, and target specific configuration fragments
1423 # --------------------------------------------------------
1425 # Collect build-machine-specific information.
1426 . ${srcdir}/config.build
1428 # Collect host-machine-specific information.
1429 . ${srcdir}/config.host
1433 # Collect target-machine-specific information.
1434 . ${srcdir}/config.gcc
1436 extra_objs="${host_extra_objs} ${extra_objs}"
1437 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1439 # Default the target-machine variables that were not explicitly set.
1440 if test x"$tm_file" = x
1441 then tm_file=$cpu_type/$cpu_type.h; fi
1443 if test x"$extra_headers" = x
1444 then extra_headers=; fi
1446 if test x$md_file = x
1447 then md_file=$cpu_type/$cpu_type.md; fi
1449 if test x$out_file = x
1450 then out_file=$cpu_type/$cpu_type.c; fi
1452 if test x"$tmake_file" = x
1453 then tmake_file=$cpu_type/t-$cpu_type
1456 # Support --enable-initfini-array.
1457 if test x$enable_initfini_array != xno; then
1458 tm_file="${tm_file} initfini-array.h"
1461 if test x"$dwarf2" = xyes
1462 then tm_file="$tm_file tm-dwarf2.h"
1465 # Say what files are being used for the output code and MD file.
1466 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1467 echo "Using \`$srcdir/config/$md_file' as machine description file."
1469 # If any of the xm_file variables contain nonexistent files, warn
1470 # about them and drop them.
1473 for x in $build_xm_file; do
1474 if test -f $srcdir/config/$x
1476 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1482 for x in $host_xm_file; do
1483 if test -f $srcdir/config/$x
1485 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1491 for x in $xm_file; do
1492 if test -f $srcdir/config/$x
1494 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1500 for f in $tm_file; do
1503 if test $count = ax; then
1504 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1506 echo "Using the following target machine macro files:"
1507 for f in $tm_file; do
1508 echo " $srcdir/config/$f"
1512 if test x$use_long_long_for_widest_fast_int = xyes; then
1513 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1514 [Define to 1 if the 'long long' type is wider than 'long' but still
1515 efficiently supported by the host hardware.])
1518 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1519 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1521 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1522 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1525 for f in $host_xm_file; do
1528 if test $count = a; then
1530 elif test $count = ax; then
1531 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1533 echo "Using the following host machine macro files:"
1534 for f in $host_xm_file; do
1535 echo " $srcdir/config/$f"
1538 echo "Using ${out_host_hook_obj} for host machine hooks."
1540 if test "$host_xm_file" != "$build_xm_file"; then
1542 for f in $build_xm_file; do
1545 if test $count = a; then
1547 elif test $count = ax; then
1548 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1550 echo "Using the following build machine macro files:"
1551 for f in $build_xm_file; do
1552 echo " $srcdir/config/$f"
1557 if test -n "$configured_native_system_header_dir"; then
1558 native_system_header_dir=$configured_native_system_header_dir
1560 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1561 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1565 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1566 gcc_cv_mcontext_underscores,
1568 #include <sys/cdefs.h>
1569 #include <sys/signal.h>
1570 #include <ucontext.h>
1571 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1573 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1574 if test $gcc_cv_mcontext_underscores = yes; then
1575 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1576 [mcontext_t fields start with __])
1585 # Check if a valid thread package
1586 case ${enable_threads} in
1589 target_thread_file='single'
1593 target_thread_file='single'
1595 aix | dce | lynx | mipssde | posix | rtems | \
1596 single | tpf | vxworks | win32)
1597 target_thread_file=${enable_threads}
1600 echo "${enable_threads} is an unknown thread package" 1>&2
1605 if test x${thread_file} = x; then
1606 # No thread file set by target-specific clauses in config.gcc,
1607 # so use file chosen by default logic above
1608 thread_file=${target_thread_file}
1616 if test x$enable___cxa_atexit = xyes || \
1617 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1618 if test x$host = x$target; then
1620 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1621 # keyed to flag_use_cxa_atexit
1629 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1630 [echo "__cxa_atexit can't be enabled on this target"])
1634 # We can't check for __cxa_atexit when building a cross, so assume
1638 if test x$use_cxa_atexit = xyes; then
1639 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1640 [Define if you want to use __cxa_atexit, rather than atexit, to
1641 register C++ destructors for local statics and global objects.
1642 This is essential for fully standards-compliant handling of
1643 destructors, but requires __cxa_atexit in libc.])
1647 # Look for a file containing extra machine modes.
1648 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1649 extra_modes_file='$(srcdir)'/config/${extra_modes}
1650 AC_SUBST(extra_modes_file)
1651 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1652 [Define to the name of a file containing a list of extra machine modes
1653 for this architecture.])
1656 # Convert extra_options into a form suitable for Makefile use.
1659 for f in $extra_options; do
1660 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1661 all_opt_files="$all_opt_files $srcdir/config/$f"
1663 AC_SUBST(extra_opt_files)
1665 # auto-host.h is the file containing items generated by autoconf and is
1666 # the first file included by config.h.
1667 # If host=build, it is correct to have bconfig include auto-host.h
1668 # as well. If host!=build, we are in error and need to do more
1669 # work to find out the build config parameters.
1670 if test x$host = x$build
1672 build_auto=auto-host.h
1674 # We create a subdir, then run autoconf in the subdir.
1675 # To prevent recursion we set host and build for the new
1676 # invocation of configure to the build for this invocation
1683 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1684 *) realsrcdir=../${srcdir};;
1686 # Clearing GMPINC is necessary to prevent host headers being
1687 # used by the build compiler. Defining GENERATOR_FILE stops
1688 # system.h from including gmp.h.
1689 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1690 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1691 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1692 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1693 ${realsrcdir}/configure \
1694 --enable-languages=${enable_languages-all} \
1695 --target=$target_alias --host=$build_alias --build=$build_alias
1697 # We just finished tests for the build machine, so rename
1698 # the file auto-build.h in the gcc directory.
1699 mv auto-host.h ../auto-build.h
1702 build_auto=auto-build.h
1704 AC_SUBST(build_subdir)
1706 tm_file="${tm_file} defaults.h"
1707 tm_p_file="${tm_p_file} tm-preds.h"
1708 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1709 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1710 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1711 # put this back in temporarily.
1712 xm_file="auto-host.h ansidecl.h ${xm_file}"
1719 # Compile in configure arguments.
1720 if test -f configargs.h ; then
1721 # Being re-configured.
1722 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1723 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1725 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1728 # Double all backslashes and backslash all quotes to turn
1729 # gcc_config_arguments into a C string.
1730 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1731 $gcc_config_arguments
1733 gcc_config_arguments_str=`cat conftest.out`
1736 cat > configargs.h <<EOF
1737 /* Generated automatically. */
1738 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1739 static const char thread_model[] = "$thread_file";
1741 static const struct {
1742 const char *name, *value;
1743 } configure_default_options[] = $configure_default_options;
1748 gcc_BASEVER=`cat $srcdir/BASE-VER`
1749 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1750 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1751 if test -f $srcdir/REVISION ; then
1752 gcc_REVISION=`cat $srcdir/REVISION`
1756 cat > plugin-version.h <<EOF
1757 #include "configargs.h"
1759 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1760 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1761 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1762 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1764 static char basever[] = "$gcc_BASEVER";
1765 static char datestamp[] = "$gcc_DATESTAMP";
1766 static char devphase[] = "$gcc_DEVPHASE";
1767 static char revision[] = "$gcc_REVISION";
1769 /* FIXME plugins: We should make the version information more precise.
1770 One way to do is to add a checksum. */
1772 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1774 configuration_arguments};
1778 # Internationalization
1779 ZW_GNU_GETTEXT_SISTER_DIR
1781 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1782 # -liconv on the link line twice.
1783 case "$LIBINTL" in *$LIBICONV*)
1787 AC_ARG_ENABLE(secureplt,
1788 [AS_HELP_STRING([--enable-secureplt],
1789 [enable -msecure-plt by default for PowerPC])],
1792 AC_ARG_ENABLE(leading-mingw64-underscores,
1793 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1794 [enable leading underscores on 64 bit mingw targets]),
1796 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1797 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1798 [Define if we should use leading underscore on 64 bit mingw targets])])
1801 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1804 AC_ARG_ENABLE(frame-pointer,
1805 [AS_HELP_STRING([--enable-frame-pointer],
1806 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1809 linux* | darwin[[8912]]*)
1810 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1812 enable_frame_pointer=no
1815 enable_frame_pointer=yes
1820 # Windows32 Registry support for specifying GCC installation paths.
1821 AC_ARG_ENABLE(win32-registry,
1822 [AS_HELP_STRING([--disable-win32-registry],
1823 [disable lookup of installation paths in the
1824 Registry on Windows hosts])
1825 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1826 AS_HELP_STRING([--enable-win32-registry=KEY],
1827 [use KEY instead of GCC version as the last portion
1828 of the registry key])],,)
1831 win32 | pe | cygwin* | mingw32*)
1832 if test "x$enable_win32_registry" != xno; then
1833 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1836 if test "x$enable_win32_registry" != xno; then
1837 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1838 [Define to 1 if installation paths should be looked up in the Windows
1839 Registry. Ignored on non-Windows hosts.])
1841 if test "x$enable_win32_registry" != xyes \
1842 && test "x$enable_win32_registry" != x; then
1843 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1844 [Define to be the last component of the Windows registry key under which
1845 to look for installation paths. The full key used will be
1846 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1847 The default is the GCC version number.])
1853 # Get an absolute path to the GCC top-level source directory
1854 holddir=`${PWDCMD-pwd}`
1856 topdir=`${PWDCMD-pwd}`
1859 # Conditionalize the makefile for this host machine.
1861 for f in ${host_xmake_file}
1863 if test -f ${srcdir}/config/$f
1865 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1869 # Conditionalize the makefile for this target machine.
1871 for f in ${tmake_file}
1873 if test -f ${srcdir}/config/$f
1875 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1878 tmake_file="${tmake_file_}"
1880 out_object_file=`basename $out_file .c`.o
1881 common_out_object_file=`basename $common_out_file .c`.o
1883 tm_file_list="options.h"
1884 tm_include_list="options.h insn-constants.h"
1885 for f in $tm_file; do
1888 f=`echo $f | sed 's/^..//'`
1889 tm_file_list="${tm_file_list} $f"
1890 tm_include_list="${tm_include_list} $f"
1893 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1894 tm_include_list="${tm_include_list} $f"
1897 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1898 tm_include_list="${tm_include_list} config/$f"
1905 for f in $tm_p_file; do
1908 tm_p_file_list="${tm_p_file_list} $f"
1909 tm_p_include_list="${tm_p_include_list} $f"
1912 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1913 tm_p_include_list="${tm_p_include_list} config/$f"
1919 for f in $xm_file; do
1922 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1923 xm_include_list="${xm_include_list} $f"
1926 xm_file_list="${xm_file_list} $f"
1927 xm_include_list="${xm_include_list} $f"
1930 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1931 xm_include_list="${xm_include_list} config/$f"
1937 host_xm_include_list=
1938 for f in $host_xm_file; do
1941 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1942 host_xm_include_list="${host_xm_include_list} $f"
1945 host_xm_file_list="${host_xm_file_list} $f"
1946 host_xm_include_list="${host_xm_include_list} $f"
1949 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1950 host_xm_include_list="${host_xm_include_list} config/$f"
1956 for f in $build_xm_file; do
1959 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1960 build_xm_include_list="${build_xm_include_list} $f"
1962 auto-build.h | auto-host.h )
1963 build_xm_file_list="${build_xm_file_list} $f"
1964 build_xm_include_list="${build_xm_include_list} $f"
1967 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1968 build_xm_include_list="${build_xm_include_list} config/$f"
1973 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1974 # cross-compiler which does not use the native headers and libraries.
1975 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1976 CROSS= AC_SUBST(CROSS)
1977 ALL=all.internal AC_SUBST(ALL)
1978 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1980 if test "x$with_build_sysroot" != x; then
1981 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1983 # This value is used, even on a native system, because
1984 # CROSS_SYSTEM_HEADER_DIR is just
1985 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1986 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1989 if test x$host != x$target
1991 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1993 SYSTEM_HEADER_DIR=$build_system_header_dir
1994 case "$host","$target" in
1995 # Darwin crosses can use the host system's libraries and headers,
1996 # because of the fat library support. Of course, it must be the
1997 # same version of Darwin on both sides. Allow the user to
1998 # just say --target=foo-darwin without a version number to mean
1999 # "the version on this system".
2000 *-*-darwin*,*-*-darwin*)
2001 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2002 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2003 if test $hostos = $targetos -o $targetos = darwin ; then
2005 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2010 i?86-*-*,x86_64-*-* \
2011 | powerpc*-*-*,powerpc64*-*-*)
2012 CROSS="$CROSS -DNATIVE_CROSS" ;;
2017 if test "x$with_headers" = x; then
2024 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2025 SYSTEM_HEADER_DIR=$build_system_header_dir
2028 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2029 if test "x$with_headers" != x; then
2030 target_header_dir=$with_headers
2031 elif test "x$with_sysroot" = x; then
2032 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2033 elif test "x$with_build_sysroot" != "x"; then
2034 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2035 elif test "x$with_sysroot" = xyes; then
2036 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2038 target_header_dir="${with_sysroot}${native_system_header_dir}"
2041 target_header_dir=${native_system_header_dir}
2044 # If this is a cross-compiler that does not
2045 # have its own set of headers then define
2048 # If this is using newlib, without having the headers available now,
2049 # then define inhibit_libc in LIBGCC2_CFLAGS.
2050 # This prevents libgcc2 from containing any code which requires libc
2052 : ${inhibit_libc=false}
2053 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2054 test x$with_newlib = xyes ; } &&
2055 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2058 AC_SUBST(inhibit_libc)
2060 # When building gcc with a cross-compiler, we need to adjust things so
2061 # that the generator programs are still built with the native compiler.
2062 # Also, we cannot run fixincludes.
2064 # These are the normal (build=host) settings:
2065 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2066 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2067 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2068 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2069 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2070 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2072 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2073 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2075 # And these apply if build != host, or we are generating coverage data
2076 if test x$build != x$host || test "x$coverage_flags" != x
2078 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2079 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2080 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2082 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2083 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2084 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2085 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2087 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2088 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2090 # Expand extra_headers to include complete path.
2091 # This substitutes for lots of t-* files.
2093 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2094 for file in ${extra_headers} ; do
2095 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2098 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2099 if test x"$use_gcc_tgmath" = xyes
2100 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2103 # Define collect2 in Makefile.
2104 case $host_can_use_collect2 in
2106 *) collect2='collect2$(exeext)' ;;
2108 AC_SUBST([collect2])
2110 # Add a definition of USE_COLLECT2 if system wants one.
2111 case $use_collect2 in
2112 no) use_collect2= ;;
2115 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2116 xm_defines="${xm_defines} USE_COLLECT2"
2117 case $host_can_use_collect2 in
2119 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2125 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2126 [Define to the name of the LTO plugin DSO that must be
2127 passed to the linker's -plugin=LIB option.])
2129 # ---------------------------
2130 # Assembler & linker features
2131 # ---------------------------
2133 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2134 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2135 # However when ld-new is first executed from the build tree, libtool will
2136 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2137 # to the build tree. While doing this we need to use the previous-stage
2138 # linker, or we have an infinite loop. The presence of a shell script as
2139 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2140 # the gcc/collect-ld script. So we need to know how libtool works, or
2141 # exec-tool will fail.
2143 m4_defun([_LT_CONFIG_COMMANDS], [])
2146 AC_SUBST(enable_fast_install)
2148 # Identify the assembler which will work hand-in-glove with the newly
2149 # built GCC, so that we can examine its features. This is the assembler
2150 # which will be driven by the driver program.
2152 # If build != host, and we aren't building gas in-tree, we identify a
2153 # build->target assembler and hope that it will have the same features
2154 # as the host->target assembler we'll be using.
2155 gcc_cv_gas_major_version=
2156 gcc_cv_gas_minor_version=
2157 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2159 m4_pattern_allow([AS_FOR_TARGET])dnl
2160 AS_VAR_SET_IF(gcc_cv_as,, [
2161 if test -x "$DEFAULT_ASSEMBLER"; then
2162 gcc_cv_as="$DEFAULT_ASSEMBLER"
2163 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2164 && test -f ../gas/Makefile \
2165 && test x$build = x$host; then
2166 gcc_cv_as=../gas/as-new$build_exeext
2167 elif test -x as$build_exeext; then
2168 # Build using assembler in the current directory.
2169 gcc_cv_as=./as$build_exeext
2170 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2171 gcc_cv_as="$AS_FOR_TARGET"
2173 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2176 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2177 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2178 case "$ORIGINAL_AS_FOR_TARGET" in
2179 ./as | ./as$build_exeext) ;;
2180 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2183 AC_MSG_CHECKING(what assembler to use)
2184 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2185 # Single tree build which includes gas. We want to prefer it
2186 # over whatever linker top-level may have detected, since
2187 # we'll use what we're building after installation anyway.
2188 AC_MSG_RESULT(newly built gas)
2190 _gcc_COMPUTE_GAS_VERSION
2191 in_tree_gas_is_elf=no
2192 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2193 || (grep 'obj_format = multi' ../gas/Makefile \
2194 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2196 in_tree_gas_is_elf=yes
2199 AC_MSG_RESULT($gcc_cv_as)
2205 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2206 [case "${enableval}" in
2212 install_gold_as_default=no
2214 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2215 [case "${enableval}" in
2217 install_gold_as_default=yes
2220 if test x${default_ld} != x; then
2221 install_gold_as_default=yes
2227 AC_MSG_ERROR([invalid --enable-gold argument])
2231 # Identify the linker which will work hand-in-glove with the newly
2232 # built GCC, so that we can examine its features. This is the linker
2233 # which will be driven by the driver program.
2235 # If build != host, and we aren't building gas in-tree, we identify a
2236 # build->target linker and hope that it will have the same features
2237 # as the host->target linker we'll be using.
2238 gcc_cv_gld_major_version=
2239 gcc_cv_gld_minor_version=
2240 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2241 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2242 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2244 AS_VAR_SET_IF(gcc_cv_ld,, [
2245 if test -x "$DEFAULT_LINKER"; then
2246 gcc_cv_ld="$DEFAULT_LINKER"
2247 elif test $install_gold_as_default = yes \
2248 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2249 && test -f ../gold/Makefile \
2250 && test x$build = x$host; then
2251 gcc_cv_ld=../gold/ld-new$build_exeext
2252 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2253 && test -f ../ld/Makefile \
2254 && test x$build = x$host; then
2255 gcc_cv_ld=../ld/ld-new$build_exeext
2256 elif test -x collect-ld$build_exeext; then
2257 # Build using linker in the current directory.
2258 gcc_cv_ld=./collect-ld$build_exeext
2259 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2260 gcc_cv_ld="$LD_FOR_TARGET"
2262 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2265 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2266 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2267 # if the PLUGIN_LD is set ld-new, just have it as ld
2268 # as that is the installed named.
2269 if test x$PLUGIN_LD_SUFFIX = xld-new \
2270 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2273 AC_ARG_WITH(plugin-ld,
2274 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2275 [if test x"$withval" != x; then
2276 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2277 PLUGIN_LD_SUFFIX="$withval"
2279 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2280 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2282 # Check to see if we are using gold instead of ld
2283 AC_MSG_CHECKING(whether we are using gold)
2285 if test x$gcc_cv_ld != x; then
2286 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2287 | grep "GNU gold" > /dev/null; then
2291 AC_MSG_RESULT($ld_is_gold)
2293 AC_MSG_CHECKING(gold linker with split stack support as non default)
2294 # Check to see if default ld is not gold, but gold is
2295 # available and has support for split stack. If gcc was configured
2296 # with gold then no checking is done.
2298 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2300 # For platforms other than powerpc64*, enable as appropriate.
2303 ld_gold=`which ${gcc_cv_ld}.gold`
2304 # Make sure this gold has minimal split stack support
2305 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2306 ld_vers=`$ld_gold --version | sed 1q`
2307 gold_vers=`echo $ld_vers | sed -n \
2308 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2310 # check that the gold version contains the complete split stack support
2311 # on powerpc64 big and little endian
2313 case "$gold_vers" in
2314 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2316 *) gold_non_default=no
2322 if test $gold_non_default = yes; then
2323 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2324 [Define if the gold linker supports split stack and is available as a non-default])
2327 AC_MSG_RESULT($gold_non_default)
2329 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2330 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2331 case "$ORIGINAL_LD_FOR_TARGET" in
2332 ./collect-ld | ./collect-ld$build_exeext) ;;
2333 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2336 AC_MSG_CHECKING(what linker to use)
2337 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2338 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2339 # Single tree build which includes ld. We want to prefer it
2340 # over whatever linker top-level may have detected, since
2341 # we'll use what we're building after installation anyway.
2342 AC_MSG_RESULT(newly built ld)
2344 in_tree_ld_is_elf=no
2345 if (grep 'EMUL = .*elf' ../ld/Makefile \
2346 || grep 'EMUL = .*linux' ../ld/Makefile \
2347 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2348 in_tree_ld_is_elf=yes
2349 elif test "$ld_is_gold" = yes; then
2350 in_tree_ld_is_elf=yes
2352 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
2355 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2356 if test x$gcc_cv_gld_version != x; then
2360 case $gcc_cv_gld_version in
2363 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2366 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2367 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2369 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2370 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2372 AC_MSG_RESULT($gcc_cv_ld)
2374 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2375 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2376 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2379 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2380 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2382 # Figure out what nm we will be using.
2383 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2384 AS_VAR_SET_IF(gcc_cv_nm,, [
2385 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2386 && test -f ../binutils/Makefile \
2387 && test x$build = x$host; then
2388 gcc_cv_nm=../binutils/nm-new$build_exeext
2389 elif test -x nm$build_exeext; then
2390 gcc_cv_nm=./nm$build_exeext
2391 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2392 gcc_cv_nm="$NM_FOR_TARGET"
2394 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2397 AC_MSG_CHECKING(what nm to use)
2398 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2399 # Single tree build which includes binutils.
2400 AC_MSG_RESULT(newly built nm)
2403 AC_MSG_RESULT($gcc_cv_nm)
2407 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2408 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2409 case "$ORIGINAL_NM_FOR_TARGET" in
2410 ./nm | ./nm$build_exeext) ;;
2411 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2415 # Figure out what objdump we will be using.
2416 AS_VAR_SET_IF(gcc_cv_objdump,, [
2417 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2418 && test -f ../binutils/Makefile \
2419 && test x$build = x$host; then
2420 # Single tree build which includes binutils.
2421 gcc_cv_objdump=../binutils/objdump$build_exeext
2422 elif test -x objdump$build_exeext; then
2423 gcc_cv_objdump=./objdump$build_exeext
2424 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2425 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2427 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2430 AC_MSG_CHECKING(what objdump to use)
2431 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2432 # Single tree build which includes binutils.
2433 AC_MSG_RESULT(newly built objdump)
2434 elif test x$gcc_cv_objdump = x; then
2435 AC_MSG_RESULT(not found)
2437 AC_MSG_RESULT($gcc_cv_objdump)
2440 # Figure out what readelf we will be using.
2441 AS_VAR_SET_IF(gcc_cv_readelf,, [
2442 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2443 && test -f ../binutils/Makefile \
2444 && test x$build = x$host; then
2445 # Single tree build which includes binutils.
2446 gcc_cv_readelf=../binutils/readelf$build_exeext
2447 elif test -x readelf$build_exeext; then
2448 gcc_cv_readelf=./readelf$build_exeext
2449 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2450 gcc_cv_readelf="$READELF_FOR_TARGET"
2452 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2455 AC_MSG_CHECKING(what readelf to use)
2456 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2457 # Single tree build which includes binutils.
2458 AC_MSG_RESULT(newly built readelf)
2459 elif test x$gcc_cv_readelf = x; then
2460 AC_MSG_RESULT(not found)
2462 AC_MSG_RESULT($gcc_cv_readelf)
2465 # Figure out what assembler alignment features are present.
2466 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2470 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2471 [Define if your assembler supports .balign and .p2align.])])
2473 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2476 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2477 [Define if your assembler supports specifying the maximum number
2478 of bytes to skip when using the GAS .p2align command.])])
2480 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2483 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2484 [Define if your assembler supports .literal16.])])
2486 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2488 [conftest_label1: .word 0
2490 conftest_label2: .word 0
2492 [if test x$gcc_cv_nm != x; then
2493 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2494 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2495 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2497 else gcc_cv_as_subsection_m1=yes
2499 rm -f conftest.nm1 conftest.nm2
2501 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2502 [Define if your assembler supports .subsection and .subsection -1 starts
2503 emitting at the beginning of your section.])])
2505 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2508 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2510 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2512 [ .weakref foobar, barfnot],,
2513 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2515 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2518 .NSUBSPA $CODE$,COMDAT],,
2519 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2521 # .hidden needs to be supported in both the assembler and the linker,
2522 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2523 # This is irritatingly difficult to feature test for; we have to check the
2524 # date string after the version number. If we've got an in-tree
2525 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2527 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2528 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2534 # Darwin as has some visibility support, though with a different syntax.
2535 gcc_cv_as_hidden=yes
2539 # gnu_indirect_function type is an extension proposed at
2540 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2541 # selection of function implementation
2542 AC_ARG_ENABLE(gnu-indirect-function,
2543 [AS_HELP_STRING([--enable-gnu-indirect-function],
2544 [enable the use of the @gnu_indirect_function to glibc systems])],
2545 [case $enable_gnu_indirect_function in
2547 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2548 Valid choices are 'yes' and 'no'.]) ;;
2550 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2552 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2553 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2554 [Define if your system supports gnu indirect functions.])
2558 if test $in_tree_ld != yes ; then
2559 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2560 if echo "$ld_ver" | grep GNU > /dev/null; then
2561 if test x"$ld_is_gold" = xyes; then
2562 # GNU gold --version looks like this:
2564 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2566 # We extract the binutils version which is more familiar and specific
2567 # than the gold version.
2568 ld_vers=`echo $ld_ver | sed -n \
2569 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2571 # GNU ld --version looks like this:
2573 # GNU ld (GNU Binutils) 2.21.51.20110225
2574 ld_vers=`echo $ld_ver | sed -n \
2575 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2577 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2578 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2579 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2580 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2584 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2587 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2588 # /usr/ccs/bin/ld has been configured.
2589 ld_ver=`$gcc_cv_ld -V 2>&1`
2590 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2591 ld_vers=`echo $ld_ver | sed -n \
2592 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2593 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2594 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2602 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2603 [[if test $in_tree_ld = yes ; then
2605 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2606 && test $in_tree_ld_is_elf = yes; then
2607 gcc_cv_ld_hidden=yes
2610 gcc_cv_ld_hidden=yes
2611 if test x"$ld_is_gold" = xyes; then
2613 elif echo "$ld_ver" | grep GNU > /dev/null; then
2615 mmix-knuth-mmixware)
2616 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2620 if test 0"$ld_date" -lt 20020404; then
2621 if test -n "$ld_date"; then
2622 # If there was date string, but was earlier than 2002-04-04, fail
2624 elif test -z "$ld_vers"; then
2625 # If there was no date string nor ld version number, something is wrong
2628 test -z "$ld_vers_patch" && ld_vers_patch=0
2629 if test "$ld_vers_major" -lt 2; then
2631 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2632 gcc_cv_ld_hidden="no"
2633 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2641 # Darwin ld has some visibility support.
2642 gcc_cv_ld_hidden=yes
2644 hppa64*-*-hpux* | ia64*-*-hpux*)
2645 gcc_cv_ld_hidden=yes
2647 *-*-solaris2.1[0-9]*)
2648 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2649 # .symbolic was only added in Solaris 9 12/02.
2650 gcc_cv_ld_hidden=yes
2658 libgcc_visibility=no
2659 AC_SUBST(libgcc_visibility)
2660 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2661 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2662 libgcc_visibility=yes
2663 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2664 [Define if your assembler and linker support .hidden.])
2667 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2668 gcc_cv_ld_ro_rw_mix=unknown
2669 if test $in_tree_ld = yes ; then
2670 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2671 && test $in_tree_ld_is_elf = yes; then
2672 gcc_cv_ld_ro_rw_mix=read-write
2674 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2675 echo '.section myfoosect, "a"' > conftest1.s
2676 echo '.section myfoosect, "aw"' > conftest2.s
2677 echo '.byte 1' >> conftest2.s
2678 echo '.section myfoosect, "a"' > conftest3.s
2679 echo '.byte 0' >> conftest3.s
2680 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2681 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2682 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2683 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2684 conftest2.o conftest3.o > /dev/null 2>&1; then
2685 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2686 | sed -e '/myfoosect/!d' -e N`
2687 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2688 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2689 gcc_cv_ld_ro_rw_mix=read-only
2691 gcc_cv_ld_ro_rw_mix=read-write
2696 rm -f conftest.* conftest[123].*
2699 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2700 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2701 [Define if your linker links a mix of read-only
2702 and read-write sections into a read-write section.])
2704 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2706 gcc_AC_INITFINI_ARRAY
2708 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2709 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2717 [[# GAS versions before 2.11 do not support uleb128,
2718 # despite appearing to.
2719 # ??? There exists an elf-specific test that will crash
2720 # the assembler. Perhaps it's better to figure out whether
2721 # arbitrary sections are supported and try the test.
2722 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2723 if echo "$as_ver" | grep GNU > /dev/null; then
2724 as_vers=`echo $as_ver | sed -n \
2725 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2726 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2727 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2728 if test $as_major -eq 2 && test $as_minor -lt 11
2730 else gcc_cv_as_leb128=yes
2733 [AC_DEFINE(HAVE_AS_LEB128, 1,
2734 [Define if your assembler supports .sleb128 and .uleb128.])])
2736 # Check if we have assembler support for unwind directives.
2737 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2744 .cfi_escape 1, 2, 3, 4, 5
2748 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2749 # read-only and read-write sections, we need to make sure that the
2750 # assembler used emits read-write .eh_frame sections.
2751 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2752 if test "x$gcc_cv_objdump" != x; then
2753 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2754 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2755 gcc_cv_as_cfi_directive=no
2758 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2759 # On Solaris/x86, make sure that GCC and assembler agree on using
2760 # read-only .eh_frame sections for 64-bit.
2761 if test x$gas = xyes; then
2762 as_ix86_64_opt="--64"
2764 as_ix86_64_opt="-xarch=amd64"
2766 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2767 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2768 sed -e /.eh_frame/!d -e N | \
2769 grep READONLY > /dev/null; then
2770 gcc_cv_as_cfi_directive=yes
2772 gcc_cv_as_cfi_directive=no
2776 gcc_cv_as_cfi_directive=yes
2781 # no objdump, err on the side of caution
2782 gcc_cv_as_cfi_directive=no
2785 gcc_cv_as_cfi_directive=yes
2789 gcc_cv_as_cfi_directive=yes
2792 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2793 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2797 .cfi_adjust_cfa_offset 64
2799 .cfi_adjust_cfa_offset 128
2802 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2803 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2804 gcc_cv_as_cfi_advance_working=yes
2808 # no objdump, err on the side of caution
2809 gcc_cv_as_cfi_advance_working=no
2811 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2812 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2813 [`if test $gcc_cv_as_cfi_directive = yes \
2814 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2815 [Define 0/1 if your assembler supports CFI directives.])
2817 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2818 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2819 gcc_cv_as_cfi_personality_directive, ,,
2822 .cfi_personality 0, symbol
2824 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2825 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2826 then echo 1; else echo 0; fi`],
2827 [Define 0/1 if your assembler supports .cfi_personality.])
2829 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2830 gcc_cv_as_cfi_sections_directive, ,,
2832 .cfi_sections .debug_frame, .eh_frame
2836 win32 | pe | cygwin* | mingw32*)
2837 # Need to check that we generated the correct relocation for the
2838 # .debug_frame section. This was fixed for binutils 2.21.
2839 gcc_cv_as_cfi_sections_directive=no
2840 if test "x$gcc_cv_objdump" != x; then
2841 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2842 grep secrel > /dev/null; then
2843 gcc_cv_as_cfi_sections_directive=yes
2848 gcc_cv_as_cfi_sections_directive=yes
2851 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2852 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2853 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2854 then echo 1; else echo 0; fi`],
2855 [Define 0/1 if your assembler supports .cfi_sections.])
2857 # GAS versions up to and including 2.11.0 may mis-optimize
2859 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2867 .section .eh_frame,"aw",@progbits
2869 .4byte .LECIE1-.LSCIE1
2883 .4byte .LEFDE1-.LASFDE1
2885 .4byte .LASFDE1-__FRAME_BEGIN__
2893 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2894 cat > conftest.lit <<EOF
2895 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2896 0010 01000000 12000000 18000000 00000000 ................
2897 0020 08000000 04080000 0044 .........D @&t@
2899 cat > conftest.big <<EOF
2900 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2901 0010 00000001 00000012 00000018 00000000 ................
2902 0020 00000008 04000000 0844 .........D @&t@
2904 # If the assembler didn't choke, and we can objdump,
2905 # and we got the correct data, then succeed.
2906 # The text in the here-document typically retains its unix-style line
2907 # endings, while the output of objdump will use host line endings.
2908 # Therefore, use diff -b for the comparisons.
2909 if test x$gcc_cv_objdump != x \
2910 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2911 | tail -3 > conftest.got \
2912 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2913 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2915 gcc_cv_as_eh_frame=yes
2916 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2917 gcc_cv_as_eh_frame=buggy
2919 # Uh oh, what do we do now?
2920 gcc_cv_as_eh_frame=no
2923 if test $gcc_cv_as_eh_frame = buggy; then
2924 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2925 [Define if your assembler mis-optimizes .eh_frame data.])
2928 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2929 [elf,2,12,0], [--fatal-warnings],
2930 [.section .rodata.str, "aMS", @progbits, 1])
2931 if test $gcc_cv_as_shf_merge = no; then
2932 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2933 [elf,2,12,0], [--fatal-warnings],
2934 [.section .rodata.str, "aMS", %progbits, 1])
2936 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2937 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2938 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2940 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2941 [.stabs "gcc2_compiled.",60,0,0,0],,
2942 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2943 [Define if your assembler supports .stabs.])])
2945 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2946 gcc_cv_as_comdat_group,
2947 [elf,2,16,0], [--fatal-warnings],
2948 [.section .text,"axG",@progbits,.foo,comdat])
2949 if test $gcc_cv_as_comdat_group = yes; then
2950 gcc_cv_as_comdat_group_percent=no
2951 gcc_cv_as_comdat_group_group=no
2953 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2954 gcc_cv_as_comdat_group_percent,
2955 [elf,2,16,0], [--fatal-warnings],
2956 [.section .text,"axG",%progbits,.foo,comdat])
2957 if test $gcc_cv_as_comdat_group_percent = yes; then
2958 gcc_cv_as_comdat_group_group=no
2961 # Sun as uses a completely different syntax.
2966 .group foo,".text%foo",#comdat
2967 .section ".text%foo", #alloc,#execinstr,#progbits
2972 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2974 .group foo,.text%foo,#comdat
2975 .section .text%foo, "ax", @progbits
2981 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2982 gcc_cv_as_comdat_group_group,
2986 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2987 gcc_cv_as_comdat_group_group=no
2991 if test x"$ld_is_gold" = xyes; then
2993 elif test $in_tree_ld = yes ; then
2995 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2996 && test $in_tree_ld_is_elf = yes; then
2999 elif echo "$ld_ver" | grep GNU > /dev/null; then
3001 if test 0"$ld_date" -lt 20050308; then
3002 if test -n "$ld_date"; then
3003 # If there was date string, but was earlier than 2005-03-08, fail
3005 elif test "$ld_vers_major" -lt 2; then
3007 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3014 *-*-solaris2.1[1-9]*)
3016 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3017 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3020 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3021 # least ld version 1.2267.
3022 if test "$ld_vers_major" -gt 1; then
3024 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3026 elif test "$ld_vers_minor" -ge 2267; then
3031 # Assume linkers other than GNU ld don't support COMDAT group.
3037 # Allow overriding the automatic COMDAT group tests above.
3038 AC_ARG_ENABLE(comdat,
3039 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3040 [comdat_group="$enable_comdat"])
3041 if test $comdat_group = no; then
3042 gcc_cv_as_comdat_group=no
3043 gcc_cv_as_comdat_group_percent=no
3044 gcc_cv_as_comdat_group_group=no
3046 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3047 [`if test $gcc_cv_as_comdat_group = yes \
3048 || test $gcc_cv_as_comdat_group_percent = yes \
3049 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3050 [Define 0/1 if your assembler and linker support COMDAT groups.])
3052 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3053 gcc_cv_as_discriminator,
3057 .loc 1 1 0 discriminator 1],,
3058 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3059 [Define if your assembler supports the .loc discriminator sub-directive.])])
3061 # Thread-local storage - the check is heavily parameterized.
3070 .section ".tdata","awT",@progbits
3073 ldq $27,__tls_get_addr($29) !literal!1
3074 lda $16,foo($29) !tlsgd!1
3075 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3076 ldq $27,__tls_get_addr($29) !literal!2
3077 lda $16,foo($29) !tlsldm!2
3078 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3079 ldq $1,foo($29) !gotdtprel
3080 ldah $2,foo($29) !dtprelhi
3081 lda $3,foo($2) !dtprello
3082 lda $4,foo($29) !dtprel
3083 ldq $1,foo($29) !gottprel
3084 ldah $2,foo($29) !tprelhi
3085 lda $3,foo($2) !tprello
3086 lda $4,foo($29) !tprel'
3089 tls_as_opt=--fatal-warnings
3091 cris-*-*|crisv32-*-*)
3093 .section ".tdata","awT",@progbits
3100 tls_as_opt=--fatal-warnings
3104 .section ".tdata","awT",@progbits
3116 .section ".tdata","awT",@progbits
3120 addil LT%foo-$tls_gdidx$,gp
3121 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3124 addil LT%foo-$tls_ldidx$,gp
3126 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3127 addil LR%foo-$tls_dtpoff$,%ret0
3128 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3130 addil LT%foo-$tls_ieoff$,gp
3131 ldw RT%foo-$tls_ieoff$(%r1),%t2
3134 addil LR%foo-$tls_leoff$,%t1
3135 ldo RR%foo-$tls_leoff$(%r1),%t2'
3138 tls_as_opt=--fatal-warnings
3142 .section ".tdata","awT",%progbits
3153 i[34567]86-*-* | x86_64-*-*)
3155 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3162 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3164 .section .tdata,"awt",@progbits'
3169 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3170 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3174 .section ".tdata","awT",@progbits'
3178 tls_as_opt="--fatal-warnings"
3182 conftest_s="$conftest_s
3186 leal foo@tlsgd(,%ebx,1), %eax
3187 leal foo@tlsldm(%ebx), %eax
3188 leal foo@dtpoff(%eax), %edx
3189 movl foo@gottpoff(%ebx), %eax
3190 subl foo@gottpoff(%ebx), %eax
3191 addl foo@gotntpoff(%ebx), %eax
3192 movl foo@indntpoff, %eax
3193 movl \$foo@tpoff, %eax
3194 subl \$foo@tpoff, %eax
3195 leal foo@ntpoff(%ecx), %eax"
3198 if test x$on_solaris = xyes; then
3200 yes) tls_as_opt="$tls_as_opt --64" ;;
3201 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3204 conftest_s="$conftest_s
3208 leaq foo@tlsgd(%rip), %rdi
3209 leaq foo@tlsld(%rip), %rdi
3210 leaq foo@dtpoff(%rax), %rdx
3211 movq foo@gottpoff(%rip), %rax
3212 movq \$foo@tpoff, %rax"
3218 .section ".tdata","awT",@progbits
3221 addl r16 = @ltoff(@dtpmod(foo#)), gp
3222 addl r17 = @ltoff(@dtprel(foo#)), gp
3223 addl r18 = @ltoff(@tprel(foo#)), gp
3224 addl r19 = @dtprel(foo#), gp
3225 adds r21 = @dtprel(foo#), r13
3226 movl r23 = @dtprel(foo#)
3227 addl r20 = @tprel(foo#), gp
3228 adds r22 = @tprel(foo#), r13
3229 movl r24 = @tprel(foo#)'
3232 tls_as_opt=--fatal-warnings
3236 .section .tdata,"awT",@progbits
3240 addik r5,r20,x@TLSGD
3241 addik r5,r20,x@TLSLDM'
3244 tls_as_opt='--fatal-warnings'
3248 .section .tdata,"awT",@progbits
3252 addiu $4, $28, %tlsgd(x)
3253 addiu $4, $28, %tlsldm(x)
3254 lui $4, %dtprel_hi(x)
3255 addiu $4, $4, %dtprel_lo(x)
3256 lw $4, %gottprel(x)($28)
3257 lui $4, %tprel_hi(x)
3258 addiu $4, $4, %tprel_lo(x)'
3261 tls_as_opt='-32 --fatal-warnings'
3265 .section .tdata,"awT",@progbits
3270 move.l x@TLSGD(%a5),%a0
3271 move.l x@TLSLDM(%a5),%a0
3272 move.l x@TLSLDO(%a5),%a0
3273 move.l x@TLSIE(%a5),%a0
3274 move.l x@TLSLE(%a5),%a0'
3277 tls_as_opt='--fatal-warnings'
3281 .section ".tdata","awT",@progbits'
3284 tls_as_opt="--fatal-warnings"
3288 .section ".tdata","awT",%progbits
3292 add x0, x0, #:tlsgd_lo12:x
3297 tls_as_opt='--fatal-warnings'
3301 .extern __get_tpointer
3319 .section ".tdata","awT",@progbits
3327 addi 3,2,ld0@got@tlsgd
3333 addi 3,2,x1@got@tlsld
3339 addis 9,3,x2@dtprel@ha
3340 addi 9,9,x2@dtprel@l
3343 ld 9,x3@got@dtprel(2)
3349 tls_as_opt="-a64 --fatal-warnings"
3353 .section ".tdata","awT",@progbits
3361 addi 3,31,ld0@got@tlsgd
3363 addi 3,31,x1@got@tlsld
3366 addis 9,3,x2@dtprel@ha
3367 addi 9,9,x2@dtprel@l
3368 lwz 9,x3@got@tprel(31)
3371 addis 9,2,x2@tprel@ha
3372 addi 9,9,x2@tprel@l'
3375 tls_as_opt="-a32 --fatal-warnings"
3379 .section ".tdata","awT",@progbits
3388 l %r1,foo@GOTNTPOFF(%r12)
3389 l %r1,0(%r1):tls_load:foo
3390 bas %r14,0(%r1,%r13):tls_gdcall:foo
3391 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3394 tls_as_opt="-m31 --fatal-warnings"
3398 .section ".tdata","awT",@progbits
3406 lg %r1,foo@GOTNTPOFF(%r12)
3407 larl %r1,foo@INDNTPOFF
3408 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3409 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3412 tls_as_opt="-m64 -Aesame --fatal-warnings"
3414 sh-*-* | sh[123456789lbe]*-*-*)
3416 .section ".tdata","awT",@progbits
3426 tls_as_opt=--fatal-warnings
3430 sparc*-sun-solaris2.*)
3437 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3439 .section ".tdata",#alloc,#write,#tls'
3444 .section ".tdata","awT",@progbits'
3447 tls_as_opt="-32 --fatal-warnings"
3449 conftest_s="$conftest_s
3452 sethi %tgd_hi22(foo), %o0
3453 add %o0, %tgd_lo10(foo), %o1
3454 add %l7, %o1, %o0, %tgd_add(foo)
3455 call __tls_get_addr, %tgd_call(foo)
3456 sethi %tldm_hi22(foo), %l1
3457 add %l1, %tldm_lo10(foo), %l2
3458 add %l7, %l2, %o0, %tldm_add(foo)
3459 call __tls_get_addr, %tldm_call(foo)
3460 sethi %tldo_hix22(foo), %l3
3461 xor %l3, %tldo_lox10(foo), %l4
3462 add %o0, %l4, %l5, %tldo_add(foo)
3463 sethi %tie_hi22(foo), %o3
3464 add %o3, %tie_lo10(foo), %o3
3465 ld [%l7 + %o3], %o2, %tie_ld(foo)
3466 add %g7, %o2, %o4, %tie_add(foo)
3467 sethi %tle_hix22(foo), %l1
3468 xor %l1, %tle_lox10(foo), %o5
3469 ld [%g7 + %o5], %o1"
3473 .section ".tdata","awT",@progbits
3476 addli r0, zero, tls_gd(foo)
3477 auli r0, zero, tls_gd_ha16(foo)
3478 addli r0, r0, tls_gd_lo16(foo)
3480 addli r0, zero, tls_ie(foo)
3481 auli r0, r0, tls_ie_ha16(foo)
3482 addli r0, r0, tls_ie_lo16(foo)'
3485 tls_as_opt="--fatal-warnings"
3489 .section ".tdata","awT",@progbits
3492 shl16insli r0, zero, hw0_last_tls_gd(foo)
3493 shl16insli r0, zero, hw1_last_tls_gd(foo)
3494 shl16insli r0, r0, hw0_tls_gd(foo)
3496 shl16insli r0, zero, hw1_last_tls_ie(foo)
3497 shl16insli r0, r0, hw0_tls_ie(foo)'
3500 tls_as_opt="--fatal-warnings"
3504 .section ".tdata","awT",@progbits
3507 movi a8, foo@TLSFUNC
3508 movi a10, foo@TLSARG
3509 callx8.tls a8, foo@TLSCALL'
3516 if test "x$enable_tls" = xno ; then
3517 : # TLS explicitly disabled.
3518 elif test "x$enable_tls" = xyes ; then
3519 set_have_as_tls=yes # TLS explicitly enabled.
3520 elif test -z "$tls_first_major"; then
3521 : # If we don't have a check, assume no support.
3523 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3524 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3525 [set_have_as_tls=yes])
3527 if test $set_have_as_tls = yes ; then
3528 AC_DEFINE(HAVE_AS_TLS, 1,
3529 [Define if your assembler and linker support thread-local storage.])
3532 # Target-specific assembler checks.
3534 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3535 gcc_cv_ld_static_dynamic=no
3536 gcc_cv_ld_static_option='-Bstatic'
3537 gcc_cv_ld_dynamic_option='-Bdynamic'
3538 if test $in_tree_ld = yes ; then
3539 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3540 gcc_cv_ld_static_dynamic=yes
3542 elif test x$gcc_cv_ld != x; then
3543 # Check if linker supports -Bstatic/-Bdynamic option
3544 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3545 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3546 gcc_cv_ld_static_dynamic=yes
3549 # AIX ld uses -b flags
3550 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3551 gcc_cv_ld_static_dynamic=yes
3552 gcc_cv_ld_static_option="-bstatic"
3553 gcc_cv_ld_dynamic_option="-bdynamic"
3555 # HP-UX ld uses -a flags to select between shared and archive.
3557 if test x"$gnu_ld" = xno; then
3558 gcc_cv_ld_static_dynamic=yes
3559 gcc_cv_ld_static_option="-aarchive_shared"
3560 gcc_cv_ld_dynamic_option="-adefault"
3563 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3565 gcc_cv_ld_static_dynamic=yes
3570 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3571 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3572 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3573 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3574 [Define to the linker option to disable use of shared objects.])
3575 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3576 [Define to the linker option to enable use of shared objects.])
3578 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3580 if test x"$demangler_in_ld" = xyes; then
3581 AC_MSG_CHECKING(linker --demangle support)
3582 gcc_cv_ld_demangle=no
3583 if test $in_tree_ld = yes; then
3584 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3585 gcc_cv_ld_demangle=yes
3587 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3588 # Check if the GNU linker supports --demangle option
3589 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3590 gcc_cv_ld_demangle=yes
3593 if test x"$gcc_cv_ld_demangle" = xyes; then
3594 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3595 [Define if your linker supports --demangle option.])
3597 AC_MSG_RESULT($gcc_cv_ld_demangle)
3600 AC_MSG_CHECKING(linker plugin support)
3602 if test -f liblto_plugin.la; then
3603 save_ld_ver="$ld_ver"
3604 save_ld_vers_major="$ld_vers_major"
3605 save_ld_vers_minor="$ld_vers_minor"
3606 save_ld_is_gold="$ld_is_gold"
3610 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3612 # FIXME: ld_is_gold?
3613 ld_vers_major="$gcc_cv_gld_major_version"
3614 ld_vers_minor="$gcc_cv_gld_minor_version"
3616 # Determine plugin linker version.
3617 # FIXME: Partial duplicate from above, generalize.
3619 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3620 if echo "$ld_ver" | grep GNU > /dev/null; then
3621 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3623 ld_vers=`echo $ld_ver | sed -n \
3624 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3626 ld_vers=`echo $ld_ver | sed -n \
3627 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3629 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3630 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3635 # Determine plugin support.
3636 if echo "$ld_ver" | grep GNU > /dev/null; then
3637 # Require GNU ld or gold 2.21+ for plugin support by default.
3638 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3640 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3641 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3646 ld_ver="$save_ld_ver"
3647 ld_vers_major="$save_ld_vers_major"
3648 ld_vers_minor="$save_ld_vers_minor"
3649 ld_is_gold="$save_ld_is_gold"
3651 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3652 [Define to the level of your linker's plugin support.])
3653 AC_MSG_RESULT($gcc_cv_lto_plugin)
3655 # Target OS-specific assembler checks.
3657 case "$target_os" in
3659 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3660 gcc_cv_as_mmacosx_version_min,,
3661 [-mmacosx-version-min=10.1], [.text],,
3662 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3663 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3667 # Target CPU-specific assembler checks.
3671 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3672 [-mabi=lp64], [.text],,,)
3673 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3674 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3675 [Define if your assembler supports the -mabi option.])
3677 if test x$with_abi = xilp32; then
3678 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3679 Upgrade the Assembler.])
3681 if test x"$with_multilib_list" = xdefault; then
3682 TM_MULTILIB_CONFIG=lp64
3684 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3685 for aarch64_multilib in ${aarch64_multilibs}; do
3686 case ${aarch64_multilib} in
3688 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3689 Upgrade the Assembler.])
3697 # Check if we have binutils support for relocations types needed by -fpic
3698 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3701 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3702 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3703 [Define if your assembler supports relocs needed by -fpic.])])
3704 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3705 AC_ARG_ENABLE(fix-cortex-a53-835769,
3707 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3708 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3709 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3710 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3715 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3720 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3721 Valid choices are 'yes' and 'no'.])
3727 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3728 AC_ARG_ENABLE(fix-cortex-a53-843419,
3730 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3731 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3732 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3733 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3738 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3743 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3744 Valid choices are 'yes' and 'no'.])
3752 # All TARGET_ABI_OSF targets.
3753 alpha*-*-linux* | alpha*-*-*bsd*)
3754 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3755 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3758 extbl $3, $2, $3 !lituse_bytoff!1
3759 ldq $2, a($29) !literal!1
3760 ldq $4, b($29) !literal!2
3761 ldq_u $3, 0($2) !lituse_base!1
3762 ldq $27, f($29) !literal!5
3763 jsr $26, ($27), f !lituse_jsr!5
3764 ldah $29, 0($26) !gpdisp!3
3765 lda $0, c($29) !gprel
3766 ldah $1, d($29) !gprelhigh
3767 lda $1, d($1) !gprellow
3768 lda $29, 0($29) !gpdisp!3],,
3769 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3770 [Define if your assembler supports explicit relocations.])])
3771 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3772 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3775 ldq $27, a($29) !literal!1
3776 jsr $26, ($27), a !lituse_jsrdirect!1],,
3777 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3778 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3782 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3783 [--mlink-relax], [.text],,
3784 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3785 [Define if your avr assembler supports --mlink-relax option.])])
3787 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3789 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3790 [Define if your avr assembler supports -mrmw option.])])
3794 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3795 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3796 [-no-mul-bug-abort], [.text],,
3797 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3798 [Define if your assembler supports the -no-mul-bug-abort option.])])
3802 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3803 [.register %g2, #scratch],,
3804 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3805 [Define if your assembler supports .register.])])
3807 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3809 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3810 [Define if your assembler supports -relax option.])])
3812 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3813 gcc_cv_as_sparc_gotdata_op,,
3820 sethi %gdop_hix22(foo), %g1
3821 xor %g1, %gdop_lox10(foo), %g1
3822 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3823 [if test x$gcc_cv_ld != x \
3824 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3825 if test x$gcc_cv_objdump != x; then
3826 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3827 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3828 gcc_cv_as_sparc_gotdata_op=no
3830 gcc_cv_as_sparc_gotdata_op=yes
3835 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3836 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3838 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3839 gcc_cv_as_sparc_ua_pcrel,,
3847 .uaword %r_disp32(foo)],
3848 [if test x$gcc_cv_ld != x \
3849 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3850 gcc_cv_as_sparc_ua_pcrel=yes
3853 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3854 [Define if your assembler and linker support unaligned PC relative relocs.])
3856 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3857 gcc_cv_as_sparc_ua_pcrel_hidden,,
3862 .uaword %r_disp32(foo)
3863 .byte 0x32, 0x33, 0x34
3868 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3869 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3870 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3871 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3872 if $gcc_cv_objdump -R conftest 2> /dev/null \
3873 | grep 'DISP32' > /dev/null 2>&1; then
3876 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3880 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3881 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3882 ]) # unaligned pcrel relocs
3884 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3885 gcc_cv_as_sparc_offsetable_lo10,,
3888 or %g1, %lo(ab) + 12, %g1
3889 or %g1, %lo(ab + 12), %g1],
3890 [if test x$gcc_cv_objdump != x \
3891 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3892 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3893 gcc_cv_as_sparc_offsetable_lo10=yes
3895 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3896 [Define if your assembler supports offsetable %lo().])])
3898 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3899 gcc_cv_as_sparc_fmaf,,
3902 .register %g2, #scratch
3903 .register %g3, #scratch
3905 fmaddd %f0, %f2, %f4, %f6
3906 addxccc %g1, %g2, %g3
3907 fsrl32 %f2, %f4, %f8
3908 fnaddd %f10, %f12, %f14],,
3909 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3910 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3912 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3913 gcc_cv_as_sparc_sparc4,,
3916 .register %g2, #scratch
3917 .register %g3, #scratch
3920 1: cwbneg %g2, %g3, 1f
3923 aes_kexpand0 %f4, %f6, %f8
3924 des_round %f38, %f40, %f42, %f44
3925 camellia_f %f54, %f56, %f58, %f60
3926 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3927 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3928 [Define if your assembler supports SPARC4 instructions.])])
3930 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
3931 gcc_cv_as_sparc_sparc5,,
3934 .register %g2, #scratch
3935 .register %g3, #scratch
3938 fpadd8 %f0, %f2, %f4],,
3939 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
3940 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
3942 gcc_GAS_CHECK_FEATURE([LEON instructions],
3943 gcc_cv_as_sparc_leon,,
3946 .register %g2, #scratch
3947 .register %g3, #scratch
3951 casa [[%g2]] 0xb, %g3, %g1],,
3952 [AC_DEFINE(HAVE_AS_LEON, 1,
3953 [Define if your assembler supports LEON instructions.])])
3957 i[34567]86-*-* | x86_64-*-*)
3961 # Full C++ conformance when using a shared libstdc++-v3 requires some
3962 # support from the Cygwin DLL, which in more recent versions exports
3963 # wrappers to aid in interposing and redirecting operators new, delete,
3964 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3965 # are configuring for a version of Cygwin that exports the wrappers.
3966 if test x$host = x$target && test x$host_cpu = xi686; then
3967 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3969 # Can't check presence of libc functions during cross-compile, so
3970 # we just have to assume we're building for an up-to-date target.
3971 gcc_ac_cygwin_dll_wrappers=yes
3973 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3974 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3975 [Define if you want to generate code by default that assumes that the
3976 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3979 cygwin* | pe | mingw32* | interix*)
3980 # Recent binutils allows the three-operand form of ".comm" on PE. This
3981 # definition is used unconditionally to initialise the default state of
3982 # the target option variable that governs usage of the feature.
3983 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3984 [2,19,52],,[.comm foo,1,32])
3985 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3986 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3987 [Define if your assembler supports specifying the alignment
3988 of objects allocated using the GAS .comm command.])
3989 # Used for DWARF 2 in PE
3990 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3991 gcc_cv_as_ix86_pe_secrel32,
3997 [if test x$gcc_cv_ld != x \
3998 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3999 gcc_cv_as_ix86_pe_secrel32=yes
4002 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4003 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4004 # Test if the assembler supports the extended form of the .section
4005 # directive that specifies section alignment. LTO support uses this,
4006 # but normally only after installation, so we warn but don't fail the
4007 # configure if LTO is enabled but the assembler does not support it.
4008 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4009 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4010 if test x$gcc_cv_as_section_has_align != xyes; then
4011 case ",$enable_languages," in
4013 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4020 # Test if the assembler supports the section flag 'e' for specifying
4021 # an excluded section.
4022 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
4023 [2,22,51], [--fatal-warnings],
4026 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
4027 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
4028 [Define if your assembler supports specifying the section flag e.])
4030 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4031 gcc_cv_as_ix86_filds,,,
4032 [filds (%ebp); fists (%ebp)],,
4033 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4034 [Define if your assembler uses filds and fists mnemonics.])])
4036 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4037 gcc_cv_as_ix86_fildq,,,
4038 [fildq (%ebp); fistpq (%ebp)],,
4039 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4040 [Define if your assembler uses fildq and fistq mnemonics.])])
4042 gcc_GAS_CHECK_FEATURE([cmov syntax],
4043 gcc_cv_as_ix86_cmov_sun_syntax,,,
4044 [cmovl.l %edx, %eax],,
4045 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4046 [Define if your assembler supports the Sun syntax for cmov.])])
4048 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4049 gcc_cv_as_ix86_ffreep,,,
4051 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4052 [Define if your assembler supports the ffreep mnemonic.])])
4054 gcc_GAS_CHECK_FEATURE([.quad directive],
4055 gcc_cv_as_ix86_quad,,,
4057 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4058 [Define if your assembler supports the .quad directive.])])
4060 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4061 gcc_cv_as_ix86_sahf,,,
4064 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4065 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4067 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4068 gcc_cv_as_ix86_interunit_movq,,,
4072 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4073 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4074 [Define if your assembler supports interunit movq mnemonic.])
4076 gcc_GAS_CHECK_FEATURE([hle prefixes],
4077 gcc_cv_as_ix86_hle,,,
4078 [lock xacquire cmpxchg %esi, (%ecx)],,
4079 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4080 [Define if your assembler supports HLE prefixes.])])
4082 gcc_GAS_CHECK_FEATURE([swap suffix],
4083 gcc_cv_as_ix86_swap,,,
4084 [movl.s %esp, %ebp],,
4085 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4086 [Define if your assembler supports the swap suffix.])])
4088 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4089 gcc_cv_as_ix86_diff_sect_delta,,,
4097 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4098 [Define if your assembler supports the subtraction of symbols in different sections.])])
4100 # These two are used unconditionally by i386.[ch]; it is to be defined
4101 # to 1 if the feature is present, 0 otherwise.
4102 as_ix86_gotoff_in_data_opt=
4103 if test x$gas = xyes; then
4104 as_ix86_gotoff_in_data_opt="--32"
4106 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4107 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4108 [$as_ix86_gotoff_in_data_opt],
4114 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4115 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4116 [Define true if the assembler supports '.long foo@GOTOFF'.])
4118 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4119 gcc_cv_as_ix86_rep_lock_prefix,,,
4125 lock addl %edi, (%eax,%esi)
4126 lock orl $0, (%esp)],,
4127 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4128 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4130 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4131 gcc_cv_as_ix86_ud2,,,
4133 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4134 [Define if your assembler supports the 'ud2' mnemonic.])])
4136 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4137 gcc_cv_as_ix86_tlsgdplt,,,
4138 [call tls_gd@tlsgdplt],
4139 [if test x$gcc_cv_ld != x \
4140 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4141 gcc_cv_as_ix86_tlsgdplt=yes
4144 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4145 [Define if your assembler and linker support @tlsgdplt.])])
4148 .section .tdata,"aw'$tls_section_flag'",@progbits
4150 .section .text,"ax",@progbits
4151 call tls_ld@tlsldmplt'
4152 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4153 gcc_cv_as_ix86_tlsldmplt,,,
4155 [if test x$gcc_cv_ld != x \
4156 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4157 gcc_cv_as_ix86_tlsldmplt=yes
4160 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4161 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4162 [Define to 1 if your assembler and linker support @tlsldmplt.])
4164 # Enforce 32-bit output with gas and gld.
4165 if test x$gas = xyes; then
4166 as_ix86_tls_ldm_opt="--32"
4168 if echo "$ld_ver" | grep GNU > /dev/null; then
4169 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4170 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4172 ld_ix86_tls_ldm_opt="-melf_i386"
4176 .section .text,"ax",@progbits
4178 .type _start, @function
4180 leal value@tlsldm(%ebx), %eax
4181 call ___tls_get_addr@plt
4183 .section .tdata,"aw'$tls_section_flag'",@progbits
4184 .type value, @object
4186 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4187 gcc_cv_as_ix86_tlsldm,,
4188 [$as_ix86_tls_ldm_opt],
4190 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4191 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4192 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4193 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4194 gcc_cv_as_ix86_tlsldm=yes
4198 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4199 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4200 [Define to 1 if your assembler and linker support @tlsldm.])
4205 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4206 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4208 addl r15 = @ltoffx(x#), gp
4210 ld8.mov r16 = [[r15]], x#],,
4211 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4212 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4220 gcc_GAS_CHECK_FEATURE([.machine directive support],
4221 gcc_cv_as_machine_directive,,,
4222 [ .machine ppc7400])
4223 if test x$gcc_cv_as_machine_directive != xyes; then
4224 echo "*** This target requires an assembler supporting \".machine\"" >&2
4225 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4226 test x$build = x$target && exit 1
4232 *-*-aix*) conftest_s=' .machine "pwr5"
4235 *-*-darwin*) conftest_s=' .text
4237 *) conftest_s=' .machine power4
4242 gcc_GAS_CHECK_FEATURE([mfcr field support],
4243 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4245 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4246 [Define if your assembler supports mfcr field.])])
4249 *-*-aix*) conftest_s=' .machine "pwr5"
4252 *) conftest_s=' .machine power5
4257 gcc_GAS_CHECK_FEATURE([popcntb support],
4258 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4260 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4261 [Define if your assembler supports popcntb field.])])
4264 *-*-aix*) conftest_s=' .machine "pwr5x"
4267 *) conftest_s=' .machine power5
4272 gcc_GAS_CHECK_FEATURE([fp round support],
4273 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4275 [AC_DEFINE(HAVE_AS_FPRND, 1,
4276 [Define if your assembler supports fprnd.])])
4279 *-*-aix*) conftest_s=' .machine "pwr6"
4282 *) conftest_s=' .machine power6
4287 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4288 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4290 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4291 [Define if your assembler supports mffgpr and mftgpr.])])
4294 *-*-aix*) conftest_s=' .csect .text[[PR]]
4296 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4300 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4301 *) conftest_s=' .text
4303 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4306 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4307 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4309 [AC_DEFINE(HAVE_AS_REL16, 1,
4310 [Define if your assembler supports R_PPC_REL16 relocs.])])
4313 *-*-aix*) conftest_s=' .machine "pwr6"
4316 *) conftest_s=' .machine power6
4321 gcc_GAS_CHECK_FEATURE([compare bytes support],
4322 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4324 [AC_DEFINE(HAVE_AS_CMPB, 1,
4325 [Define if your assembler supports cmpb.])])
4328 *-*-aix*) conftest_s=' .machine "pwr6"
4331 *) conftest_s=' .machine power6
4336 gcc_GAS_CHECK_FEATURE([decimal float support],
4337 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4339 [AC_DEFINE(HAVE_AS_DFP, 1,
4340 [Define if your assembler supports DFP instructions.])])
4343 *-*-aix*) conftest_s=' .machine "pwr7"
4346 *) conftest_s=' .machine power7
4351 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4352 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4354 [AC_DEFINE(HAVE_AS_VSX, 1,
4355 [Define if your assembler supports VSX instructions.])])
4358 *-*-aix*) conftest_s=' .machine "pwr7"
4361 *) conftest_s=' .machine power7
4366 gcc_GAS_CHECK_FEATURE([popcntd support],
4367 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4369 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4370 [Define if your assembler supports POPCNTD instructions.])])
4373 *-*-aix*) conftest_s=' .machine "pwr8"
4374 .csect .text[[PR]]';;
4375 *) conftest_s=' .machine power8
4379 gcc_GAS_CHECK_FEATURE([power8 support],
4380 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4382 [AC_DEFINE(HAVE_AS_POWER8, 1,
4383 [Define if your assembler supports POWER8 instructions.])])
4386 *-*-aix*) conftest_s=' .machine "pwr9"
4387 .csect .text[[PR]]';;
4388 *) conftest_s=' .machine power9
4392 gcc_GAS_CHECK_FEATURE([power9 support],
4393 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4395 [AC_DEFINE(HAVE_AS_POWER9, 1,
4396 [Define if your assembler supports POWER9 instructions.])])
4399 *-*-aix*) conftest_s=' .csect .text[[PR]]
4401 *) conftest_s=' .text
4405 gcc_GAS_CHECK_FEATURE([lwsync support],
4406 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4408 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4409 [Define if your assembler supports LWSYNC instructions.])])
4412 *-*-aix*) conftest_s=' .machine "476"
4415 *) conftest_s=' .machine "476"
4420 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4421 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4423 [AC_DEFINE(HAVE_AS_DCI, 1,
4424 [Define if your assembler supports the DCI/ICI instructions.])])
4426 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4427 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4428 [.gnu_attribute 4,1],,
4429 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4430 [Define if your assembler supports .gnu_attribute.])])
4432 gcc_GAS_CHECK_FEATURE([tls marker support],
4433 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4434 [ bl __tls_get_addr(x@tlsgd)],,
4435 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4436 [Define if your assembler supports arg info for __tls_get_addr.])])
4438 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4439 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4440 [ .reloc .,R_PPC64_ENTRY; nop],,
4441 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4442 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4446 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4447 gcc_cv_as_aix_ref, [2,21,0],,
4448 [ .csect stuff[[rw]]
4454 [AC_DEFINE(HAVE_AS_REF, 1,
4455 [Define if your assembler supports .ref])])
4457 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4458 gcc_cv_as_aix_dwloc, [2,21,0],,
4463 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4464 [Define if your assembler supports AIX debug frame section label reference.])])
4470 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4471 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4472 [ lw $4,%gp_rel(foo)($4)],,
4473 [if test x$target_cpu_default = x
4474 then target_cpu_default=MASK_EXPLICIT_RELOCS
4475 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4478 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4479 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4480 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4481 [Define if the assembler understands -mno-shared.])])
4483 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4484 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4485 [.gnu_attribute 4,1],,
4486 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4487 [Define if your assembler supports .gnu_attribute.])])
4489 gcc_GAS_CHECK_FEATURE([.module support],
4490 gcc_cv_as_mips_dot_module,,[-32],
4493 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4494 [Define if your assembler supports .module.])])
4495 if test x$gcc_cv_as_mips_dot_module = xno \
4496 && test x$with_fp_32 != x; then
4498 [Requesting --with-fp-32= requires assembler support for .module.])
4501 gcc_GAS_CHECK_FEATURE([.micromips support],
4502 gcc_cv_as_micromips_support,,[--fatal-warnings],
4504 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4505 [Define if your assembler supports the .set micromips directive])])
4507 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4508 gcc_cv_as_mips_dtprelword, [2,18,0],,
4509 [.section .tdata,"awT",@progbits
4513 .dtprelword x+0x8000],,
4514 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4515 [Define if your assembler supports .dtprelword.])])
4517 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4518 gcc_cv_as_mips_dspr1_mult,,,
4528 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4529 [Define if your assembler supports DSPR1 mult.])])
4531 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4532 gcc_cv_as_ld_jalr_reloc=no
4533 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4534 if test $in_tree_ld = yes ; then
4535 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4536 && test $in_tree_ld_is_elf = yes; then
4537 gcc_cv_as_ld_jalr_reloc=yes
4539 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4540 echo ' .ent x' > conftest.s
4541 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4542 echo ' lw $25,%call16(y)($28)' >> conftest.s
4543 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4544 echo '1: jalr $25' >> conftest.s
4545 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4546 echo '1: jalr $25' >> conftest.s
4547 echo ' .end x' >> conftest.s
4548 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4549 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4550 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4551 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4552 gcc_cv_as_ld_jalr_reloc=yes
4558 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4559 if test x$target_cpu_default = x; then
4560 target_cpu_default=MASK_RELAX_PIC_CALLS
4562 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4565 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4567 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4568 [gcc_cv_ld_mips_personality_relaxation],
4569 [gcc_cv_ld_mips_personality_relaxation=no
4570 if test $in_tree_ld = yes ; then
4571 if test "$gcc_cv_gld_major_version" -eq 2 \
4572 -a "$gcc_cv_gld_minor_version" -ge 21 \
4573 -o "$gcc_cv_gld_major_version" -gt 2; then
4574 gcc_cv_ld_mips_personality_relaxation=yes
4576 elif test x$gcc_cv_as != x \
4577 -a x$gcc_cv_ld != x \
4578 -a x$gcc_cv_readelf != x ; then
4579 cat > conftest.s <<EOF
4581 .cfi_personality 0x80,indirect_ptr
4588 .section .data,"aw",@progbits
4592 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4593 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4594 if $gcc_cv_readelf -d conftest 2>&1 \
4595 | grep TEXTREL > /dev/null 2>&1; then
4597 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4598 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4601 gcc_cv_ld_mips_personality_relaxation=yes
4605 rm -f conftest.s conftest.o conftest])
4606 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4607 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4608 [Define if your linker can relax absolute .eh_frame personality
4609 pointers into PC-relative form.])
4612 gcc_GAS_CHECK_FEATURE([-mnan= support],
4613 gcc_cv_as_mips_nan,,
4615 [AC_DEFINE(HAVE_AS_NAN, 1,
4616 [Define if the assembler understands -mnan=.])])
4617 if test x$gcc_cv_as_mips_nan = xno \
4618 && test x$with_nan != x; then
4620 [Requesting --with-nan= requires assembler support for -mnan=])
4624 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4625 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4626 [.gnu_attribute 8,1],,
4627 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4628 [Define if your assembler supports .gnu_attribute.])])
4629 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4630 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4635 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4636 [Define if your assembler supports .machine and .machinemode.])])
4637 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4638 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4639 [ .machine z13+vx ],,
4640 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4641 [Define if your assembler supports architecture modifiers.])])
4645 # Mips and HP-UX need the GNU assembler.
4646 # Linux on IA64 might be able to use the Intel assembler.
4649 mips*-*-* | *-*-hpux* )
4650 if test x$gas_flag = xyes \
4651 || test x"$host" != x"$build" \
4652 || test ! -x "$gcc_cv_as" \
4653 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4656 echo "*** This configuration requires the GNU assembler" >&2
4662 # ??? Not all targets support dwarf2 debug_line, even within a version
4663 # of gas. Moreover, we need to emit a valid instruction to trigger any
4664 # info to the output file. So, as supported targets are added to gas 2.11,
4665 # add some instruction here to (also) show we expect this might work.
4666 # ??? Once 2.11 is released, probably need to add first known working
4667 # version to the per-target configury.
4669 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4670 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4671 | visium | xstormy16 | xtensa)
4681 if test x"$insn" != x; then
4683 .file 1 \"conftest.s\"
4686 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4687 gcc_cv_as_dwarf2_debug_line,
4688 [elf,2,11,0],, [$conftest_s],
4689 [if test x$gcc_cv_objdump != x \
4690 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4691 | grep debug_line > /dev/null 2>&1; then
4692 gcc_cv_as_dwarf2_debug_line=yes
4695 # The .debug_line file table must be in the exact order that
4696 # we specified the files, since these indices are also used
4697 # by DW_AT_decl_file. Approximate this test by testing if
4698 # the assembler bitches if the same index is assigned twice.
4699 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4700 gcc_cv_as_dwarf2_file_buggy,,,
4704 if test $gcc_cv_as_dwarf2_debug_line = yes \
4705 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4706 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4707 [Define if your assembler supports dwarf2 .file/.loc directives,
4708 and preserves file table indices exactly as given.])
4711 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4712 gcc_cv_as_gdwarf2_flag,
4713 [elf,2,11,0], [--gdwarf2], [$insn],,
4714 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4715 [Define if your assembler supports the --gdwarf2 option.])])
4717 gcc_GAS_CHECK_FEATURE([--gstabs option],
4718 gcc_cv_as_gstabs_flag,
4719 [elf,2,11,0], [--gstabs], [$insn],,
4720 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4721 [Define if your assembler supports the --gstabs option.])])
4723 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4724 gcc_cv_as_debug_prefix_map_flag,
4725 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4726 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4727 [Define if your assembler supports the --debug-prefix-map option.])])
4730 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4731 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4732 [# gas compiled without zlib cannot compress debug sections and warns
4733 # about it, but still exits successfully. So check for this, too.
4734 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4736 gcc_cv_as_compress_debug=0
4737 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4739 gcc_cv_as_compress_debug=1
4740 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4741 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4743 gcc_cv_as_compress_debug=0
4744 # FIXME: Future gas versions will support ELF gABI style via
4745 # --compress-debug-sections[=type].
4747 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4748 [Define to the level of your assembler's compressed debug section support.])
4749 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4750 [Define to the assembler option to enable compressed debug sections.])
4751 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4752 [Define to the assembler option to disable compressed debug sections.])
4754 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4757 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4758 [Define if your assembler supports .lcomm with an alignment field.])])
4760 if test x$with_sysroot = x && test x$host = x$target \
4761 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4762 && test "$prefix" != "NONE"; then
4763 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4764 [Define to PREFIX/include if cpp should also search that directory.])
4767 # Determine the version of glibc, if any, used on the target.
4768 AC_MSG_CHECKING([for target glibc version])
4769 AC_ARG_WITH([glibc-version],
4770 [AS_HELP_STRING([--with-glibc-version=M.N],
4771 [assume GCC used with glibc version M.N or later])], [
4772 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4773 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4774 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4776 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4778 glibc_version_major=0
4779 glibc_version_minor=0
4780 [if test -f $target_header_dir/features.h \
4781 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4782 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4783 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4784 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4786 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4787 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4788 [GNU C Library major version number used on the target, or 0.])
4789 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4790 [GNU C Library minor version number used on the target, or 0.])
4792 AC_ARG_ENABLE(gnu-unique-object,
4793 [AS_HELP_STRING([--enable-gnu-unique-object],
4794 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4795 [case $enable_gnu_unique_object in
4797 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4798 Valid choices are 'yes' and 'no'.]) ;;
4800 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4802 [.type foo, '$target_type_format_char'gnu_unique_object],,
4803 # We need to unquote above to to use the definition from config.gcc.
4804 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4805 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4807 if test x$enable_gnu_unique_object = xyes; then
4808 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4809 [Define if your assembler supports @gnu_unique_object.])
4812 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4813 [gcc_cv_as_line_zero],
4814 [gcc_cv_as_line_zero=no
4815 if test $in_tree_gas = yes; then
4816 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4817 elif test "x$gcc_cv_as" != x; then
4818 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4819 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4820 test "x`cat conftest.out`" = x
4822 gcc_cv_as_line_zero=yes
4824 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4825 cat conftest.s >&AS_MESSAGE_LOG_FD
4826 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4827 cat conftest.out >&AS_MESSAGE_LOG_FD
4829 rm -f conftest.o conftest.s conftest.out
4831 if test "x$gcc_cv_as_line_zero" = xyes; then
4832 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4833 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4836 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4837 gcc_cv_ld_eh_frame_hdr=no
4838 if test $in_tree_ld = yes ; then
4839 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4840 && test $in_tree_ld_is_elf = yes; then
4841 gcc_cv_ld_eh_frame_hdr=yes
4843 elif test x$gcc_cv_ld != x; then
4844 if echo "$ld_ver" | grep GNU > /dev/null; then
4845 # Check if linker supports --eh-frame-hdr option
4846 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4847 gcc_cv_ld_eh_frame_hdr=yes
4852 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4853 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4854 gcc_cv_ld_eh_frame_hdr=yes
4860 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4861 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4862 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4863 [Define if your linker supports .eh_frame_hdr.])
4865 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4867 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4868 gcc_cv_ld_eh_frame_ciev3=no
4869 if test $in_tree_ld = yes ; then
4870 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4871 && test $in_tree_ld_is_elf = yes; then
4872 gcc_cv_ld_eh_frame_ciev3=yes
4874 elif test x$gcc_cv_ld != x; then
4875 if echo "$ld_ver" | grep GNU > /dev/null; then
4876 gcc_cv_ld_eh_frame_ciev3=yes
4877 if test 0"$ld_date" -lt 20040513; then
4878 if test -n "$ld_date"; then
4879 # If there was date string, but was earlier than 2004-05-13, fail
4880 gcc_cv_ld_eh_frame_ciev3=no
4881 elif test "$ld_vers_major" -lt 2; then
4882 gcc_cv_ld_eh_frame_ciev3=no
4883 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4884 gcc_cv_ld_eh_frame_ciev3=no
4890 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4891 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4892 gcc_cv_ld_eh_frame_ciev3=yes
4898 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4899 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4900 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4901 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4903 AC_MSG_CHECKING(linker position independent executable support)
4905 if test $in_tree_ld = yes ; then
4907 # Full PIE support on Solaris was only introduced in gld 2.26.
4908 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4909 *) gcc_gld_pie_min_version=15 ;;
4911 if test "$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 \
4912 && test $in_tree_ld_is_elf = yes; then
4915 elif test x$gcc_cv_ld != x; then
4916 # Check if linker supports -pie option
4917 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4921 if echo "$ld_ver" | grep GNU > /dev/null \
4922 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4929 *-*-solaris2.1[[1-9]]*)
4930 # Solaris 11.x and Solaris 12 added PIE support.
4931 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4938 if test x"$gcc_cv_ld_pie" = xyes; then
4939 AC_DEFINE(HAVE_LD_PIE, 1,
4940 [Define if your linker supports PIE option.])
4942 AC_MSG_RESULT($gcc_cv_ld_pie)
4944 AC_MSG_CHECKING(linker PIE support with copy reloc)
4945 gcc_cv_ld_pie_copyreloc=no
4946 if test $gcc_cv_ld_pie = yes ; then
4947 if test $in_tree_ld = yes ; then
4948 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4949 gcc_cv_ld_pie_copyreloc=yes
4951 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4952 # Check if linker supports -pie option with copy reloc
4954 i?86-*-linux* | x86_64-*-linux*)
4955 cat > conftest1.s <<EOF
4958 .type a_glob, @object
4963 cat > conftest2.s <<EOF
4966 .type main, @function
4968 movl %eax, a_glob(%rip)
4971 .section .data.rel,"aw",@progbits
4976 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4977 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4978 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4979 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4980 gcc_cv_ld_pie_copyreloc=yes
4982 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4987 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4988 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4989 [Define 0/1 if your linker supports -pie option with copy reloc.])
4990 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4992 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4993 gcc_cv_ld_eh_gc_sections=no
4994 if test $in_tree_ld = yes ; then
4995 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4996 && test $in_tree_ld_is_elf = yes; then
4997 gcc_cv_ld_eh_gc_sections=yes
4999 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5000 cat > conftest.s <<EOF
5003 .type _start, @function
5006 .size _start, .-_start
5007 .section .text.foo,"ax",@progbits
5008 .type foo, @function
5012 .section .gcc_except_table.foo,"a",@progbits
5015 .section .eh_frame,"a",@progbits
5018 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5019 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5020 | grep "gc-sections option ignored" > /dev/null; then
5021 gcc_cv_ld_eh_gc_sections=no
5022 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5023 | grep gcc_except_table > /dev/null; then
5024 gcc_cv_ld_eh_gc_sections=yes
5025 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5026 if test x$gcc_cv_as_comdat_group != xyes; then
5027 gcc_cv_ld_eh_gc_sections=no
5028 cat > conftest.s <<EOF
5031 .type _start, @function
5034 .size _start, .-_start
5035 .section .gnu.linkonce.t.foo,"ax",@progbits
5036 .type foo, @function
5040 .section .gcc_except_table.foo,"a",@progbits
5043 .section .eh_frame,"a",@progbits
5046 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5047 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5048 | grep "gc-sections option ignored" > /dev/null; then
5049 gcc_cv_ld_eh_gc_sections=no
5050 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5051 | grep gcc_except_table > /dev/null; then
5052 gcc_cv_ld_eh_gc_sections=yes
5058 rm -f conftest.s conftest.o conftest
5062 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5063 gcc_cv_ld_eh_gc_sections=no
5066 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5067 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5068 [Define if your linker supports garbage collection of
5069 sections in presence of EH frames.])
5071 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5073 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5074 gcc_cv_ld_eh_gc_sections_bug=no
5075 if test $in_tree_ld = yes ; then
5076 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5077 && test $in_tree_ld_is_elf = yes; then
5078 gcc_cv_ld_eh_gc_sections_bug=yes
5080 elif test x$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
5081 gcc_cv_ld_eh_gc_sections_bug=yes
5082 cat > conftest.s <<EOF
5085 .type _start, @function
5088 .size _start, .-_start
5089 .section .text.startup.foo,"ax",@progbits
5090 .type foo, @function
5094 .section .gcc_except_table.foo,"a",@progbits
5097 .section .eh_frame,"a",@progbits
5100 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5101 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5102 | grep "gc-sections option ignored" > /dev/null; then
5104 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5105 | grep gcc_except_table > /dev/null; then
5106 gcc_cv_ld_eh_gc_sections_bug=no
5109 rm -f conftest.s conftest.o conftest
5111 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5112 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5113 [Define if your linker has buggy garbage collection of
5114 sections support when .text.startup.foo like sections are used.])
5116 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5118 AC_MSG_CHECKING(linker for compressed debug sections)
5119 # gold/gld support compressed debug sections since binutils 2.19/2.21
5120 if test $in_tree_ld = yes ; then
5121 gcc_cv_ld_compress_debug=0
5122 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5123 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5124 gcc_cv_ld_compress_debug=2
5125 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5126 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5127 && test $in_tree_ld_is_elf = yes; then
5128 gcc_cv_ld_compress_debug=1
5130 elif echo "$ld_ver" | grep GNU > /dev/null; then
5131 gcc_cv_ld_compress_debug=1
5132 if test 0"$ld_date" -lt 20050308; then
5133 if test -n "$ld_date"; then
5134 # If there was date string, but was earlier than 2005-03-08, fail
5135 gcc_cv_ld_compress_debug=0
5136 elif test "$ld_vers_major" -lt 2; then
5137 gcc_cv_ld_compress_debug=0
5138 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5139 gcc_cv_ld_compress_debug=0
5142 if test $ld_is_gold = yes; then
5143 gcc_cv_ld_compress_debug=2
5144 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5150 # Introduced in Solaris 11.2.
5151 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5152 gcc_cv_ld_compress_debug=3
5153 gcc_cv_ld_compress_debug_option="-z compress-sections"
5155 gcc_cv_ld_compress_debug=0
5159 # Assume linkers other than GNU ld don't support compessed debug
5161 gcc_cv_ld_compress_debug=0
5166 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5167 [Define to the level of your linker's compressed debug section support.])
5168 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5169 [Define to the linker option to enable compressed debug sections.])
5170 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5172 if test x"$ld64_flag" = x"yes"; then
5174 # Set defaults for possibly untestable items.
5175 gcc_cv_ld64_export_dynamic=0
5177 if test "$build" = "$host"; then
5183 # On Darwin, because of FAT library support, it is often possible to execute
5184 # exes from compatible archs even when the host differs from the build system.
5185 case "$build","$host" in
5186 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5191 # If the configurer specified a minimum ld64 version to be supported, then use
5192 # that to determine feature support.
5193 if test x"${gcc_cv_ld64_version}" != x; then
5194 AC_MSG_CHECKING(ld64 specified version)
5195 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5196 AC_MSG_RESULT($gcc_cv_ld64_major)
5197 if test "$gcc_cv_ld64_major" -ge 236; then
5198 gcc_cv_ld64_export_dynamic=1
5200 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5201 # If the version was not specified, try to find it.
5202 AC_MSG_CHECKING(linker version)
5203 if test x"${gcc_cv_ld64_version}" = x; then
5204 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5206 AC_MSG_RESULT($gcc_cv_ld64_version)
5208 AC_MSG_CHECKING(linker for -export_dynamic support)
5209 gcc_cv_ld64_export_dynamic=1
5210 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5211 gcc_cv_ld64_export_dynamic=0
5213 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5216 if test x"${gcc_cv_ld64_version}" != x; then
5217 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5218 [Define to ld64 version.])
5221 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5222 [Define to 1 if ld64 supports '-export_dynamic'.])
5229 AC_CACHE_CHECK(linker --as-needed support,
5230 gcc_cv_ld_as_needed,
5231 [gcc_cv_ld_as_needed=no
5232 gcc_cv_ld_as_needed_option='--as-needed'
5233 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5234 if test $in_tree_ld = yes ; then
5235 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5236 && test $in_tree_ld_is_elf = yes; then
5237 gcc_cv_ld_as_needed=yes
5239 elif test x$gcc_cv_ld != x; then
5240 # Check if linker supports --as-needed and --no-as-needed options
5241 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5242 gcc_cv_ld_as_needed=yes
5245 # Solaris 2 ld always supports -z ignore/-z record.
5247 gcc_cv_ld_as_needed=yes
5248 gcc_cv_ld_as_needed_option="-z ignore"
5249 gcc_cv_ld_no_as_needed_option="-z record"
5254 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5255 # dl_iterate_phdr, i.e. since Solaris 11.
5257 *-*-solaris2.1[[1-9]]*)
5259 i?86-*-* | x86_64-*-*)
5260 if echo "$ld_ver" | grep GNU > /dev/null; then
5261 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5262 gcc_cv_ld_as_needed=no
5268 gcc_cv_ld_as_needed=no
5272 if test x"$gcc_cv_ld_as_needed" = xyes; then
5273 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5274 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5275 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5276 [Define to the linker option to ignore unused dependencies.])
5277 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5278 [Define to the linker option to keep unused dependencies.])
5281 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5282 saved_LDFLAGS="$LDFLAGS"
5283 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5284 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5285 AC_LINK_IFELSE([int main(void) {return 0;}],
5286 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5288 LDFLAGS="$saved_LDFLAGS"
5289 if test "x$gcc_cv_ld_clearcap" = xyes; then
5290 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5291 [Define if the linker supports clearing hardware capabilities via mapfile.])
5292 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5294 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5296 case "$target:$tm_file" in
5297 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5300 emul_name="-melf64lppc"
5303 emul_name="-melf64ppc"
5306 emul_name="-melf64ppc_fbsd"
5309 AC_CACHE_CHECK(linker support for omitting dot symbols,
5310 gcc_cv_ld_no_dot_syms,
5311 [gcc_cv_ld_no_dot_syms=no
5312 if test x"$ld_is_gold" = xyes; then
5313 gcc_cv_ld_no_dot_syms=yes
5314 elif test $in_tree_ld = yes ; then
5315 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5316 gcc_cv_ld_no_dot_syms=yes
5318 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5319 cat > conftest1.s <<EOF
5323 cat > conftest2.s <<EOF
5324 .section ".opd","aw"
5329 .quad .LEfoo,.TOC.@tocbase,0
5335 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5336 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5337 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5338 gcc_cv_ld_no_dot_syms=yes
5340 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5343 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5344 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5345 [Define if your PowerPC64 linker only needs function descriptor syms.])
5348 AC_CACHE_CHECK(linker large toc support,
5349 gcc_cv_ld_large_toc,
5350 [gcc_cv_ld_large_toc=no
5351 if test x"$ld_is_gold" = xyes; then
5352 gcc_cv_ld_large_toc=yes
5353 elif test $in_tree_ld = yes ; then
5354 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5355 gcc_cv_ld_large_toc=yes
5357 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5358 cat > conftest.s <<EOF
5359 .section ".tbss","awT",@nobits
5365 addis 9,13,ie0@got@tprel@ha
5366 ld 9,ie0@got@tprel@l(9)
5368 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5369 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5370 gcc_cv_ld_large_toc=yes
5372 rm -f conftest conftest.o conftest.s
5375 if test x"$gcc_cv_ld_large_toc" = xyes; then
5376 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5377 [Define if your PowerPC64 linker supports a large TOC.])
5380 AC_CACHE_CHECK(linker toc pointer alignment,
5381 gcc_cv_ld_toc_align,
5382 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5383 cat > conftest.s <<EOF
5388 .section .data.rel.ro,"aw",@progbits
5393 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5394 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5395 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5397 rm -f conftest conftest.o conftest.s
5400 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5401 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5402 [Define to .TOC. alignment forced by your linker.])
5409 AC_CACHE_CHECK(linker large toc support,
5410 gcc_cv_ld_large_toc,
5411 [gcc_cv_ld_large_toc=no
5412 if test x$gcc_cv_as != x ; then
5413 cat > conftest.s <<EOF
5423 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5424 gcc_cv_ld_large_toc=yes
5426 rm -f conftest conftest.o conftest.s
5429 if test x"$gcc_cv_ld_large_toc" = xyes; then
5430 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5431 [Define if your PowerPC64 linker supports a large TOC.])
5436 AC_CACHE_CHECK(linker --build-id support,
5438 [gcc_cv_ld_buildid=no
5439 if test $in_tree_ld = yes ; then
5440 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5441 "$gcc_cv_gld_minor_version" -ge 18 -o \
5442 "$gcc_cv_gld_major_version" -gt 2 \
5443 && test $in_tree_ld_is_elf = yes; then
5444 gcc_cv_ld_buildid=yes
5446 elif test x$gcc_cv_ld != x; then
5447 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5448 gcc_cv_ld_buildid=yes
5451 if test x"$gcc_cv_ld_buildid" = xyes; then
5452 AC_DEFINE(HAVE_LD_BUILDID, 1,
5453 [Define if your linker supports --build-id.])
5456 AC_ARG_ENABLE(linker-build-id,
5457 [AS_HELP_STRING([--enable-linker-build-id],
5458 [compiler will always pass --build-id to linker])],
5460 enable_linker_build_id=no)
5462 if test x"$enable_linker_build_id" = xyes; then
5463 if test x"$gcc_cv_ld_buildid" = xyes; then
5464 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5465 [Define if gcc should always pass --build-id to linker.])
5467 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5471 # In binutils 2.21, GNU ld gained support for new emulations fully
5472 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5473 AC_CACHE_CHECK(linker *_sol2 emulation support,
5474 gcc_cv_ld_sol2_emulation,
5475 [gcc_cv_ld_sol2_emulation=no
5476 if test $in_tree_ld = yes ; then
5477 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5478 "$gcc_cv_gld_minor_version" -ge 21 -o \
5479 "$gcc_cv_gld_major_version" -gt 2 \
5480 && test $in_tree_ld_is_elf = yes; then
5481 gcc_cv_ld_sol2_emulation=yes
5483 elif test x$gcc_cv_ld != x; then
5484 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5485 grep _sol2 > /dev/null; then
5486 gcc_cv_ld_sol2_emulation=yes
5489 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5490 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5491 [Define if your linker supports the *_sol2 emulations.])
5494 AC_CACHE_CHECK(linker --sysroot support,
5496 [gcc_cv_ld_sysroot=no
5497 if test $in_tree_ld = yes ; then
5498 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5499 gcc_cv_ld_sysroot=yes
5501 elif test x$gcc_cv_ld != x; then
5502 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5503 gcc_cv_ld_sysroot=yes
5506 if test x"$gcc_cv_ld_sysroot" = xyes; then
5507 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5508 [Define if your linker supports --sysroot.])
5513 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5514 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5515 gcc_cv_solaris_crts,
5516 [gcc_cv_solaris_crts=no
5517 if test x$host != x$target; then
5518 if test "x$with_sysroot" = xyes; then
5519 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5521 target_sysroot="${with_sysroot}"
5524 target_libdir="$target_sysroot/usr/lib"
5525 # At the time they were added, gcrt1.o became a symlink for backwards
5526 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5528 i?86-*-solaris2* | x86_64-*-solaris2*)
5529 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5532 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5537 if test x$gcc_cv_solaris_crts = xyes; then
5538 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5539 [Define if the system-provided CRTs are present on Solaris.])
5542 # Test for stack protector support in target C library.
5543 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5544 gcc_cv_libc_provides_ssp,
5545 [gcc_cv_libc_provides_ssp=no
5548 # All versions of musl provide stack protector
5549 gcc_cv_libc_provides_ssp=yes;;
5550 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5551 # glibc 2.4 and later provides __stack_chk_fail and
5552 # either __stack_chk_guard, or TLS access to stack guard canary.
5553 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5554 [if test -f $target_header_dir/features.h \
5555 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5556 $target_header_dir/features.h > /dev/null; then
5557 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5558 $target_header_dir/features.h > /dev/null && \
5559 test -f $target_header_dir/bits/uClibc_config.h && \
5560 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5561 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5562 gcc_cv_libc_provides_ssp=yes
5564 # all versions of Bionic support stack protector
5565 elif test -f $target_header_dir/sys/cdefs.h \
5566 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5567 $target_header_dir/sys/cdefs.h > /dev/null; then
5568 gcc_cv_libc_provides_ssp=yes
5572 # Avoid complicated tests (see
5573 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5574 # simply assert that glibc does provide this, which is true for all
5575 # realistically usable GNU/Hurd configurations.
5576 # All supported versions of musl provide it as well
5577 gcc_cv_libc_provides_ssp=yes;;
5578 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5579 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5580 [echo "no __stack_chk_fail on this target"])
5582 *) gcc_cv_libc_provides_ssp=no ;;
5585 if test x$gcc_cv_libc_provides_ssp = xyes; then
5586 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5587 [Define if your target C library provides stack protector support])
5590 # Check whether --enable-default-ssp was given.
5591 AC_ARG_ENABLE(default-ssp,
5592 [AS_HELP_STRING([--enable-default-ssp],
5593 [enable Stack Smashing Protection as default])],[
5594 if test x$gcc_cv_libc_provides_ssp = xyes; then
5596 ia64*-*-*) enable_default_ssp=no ;;
5597 *) enable_default_ssp=$enableval ;;
5600 enable_default_ssp=no
5602 enable_default_ssp=no)
5603 if test x$enable_default_ssp = xyes ; then
5604 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5605 [Define if your target supports default stack protector and it is enabled.])
5607 AC_SUBST([enable_default_ssp])
5609 # Test for <sys/sdt.h> on the target.
5610 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5611 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5613 if test -f $target_header_dir/sys/sdt.h; then
5615 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5616 [Define if your target C library provides sys/sdt.h])
5618 AC_MSG_RESULT($have_sys_sdt_h)
5620 # Check if TFmode long double should be used by default or not.
5621 # Some glibc targets used DFmode long double, but with glibc 2.4
5622 # and later they can use TFmode.
5624 powerpc*-*-linux* | \
5628 AC_ARG_WITH(long-double-128,
5629 [AS_HELP_STRING([--with-long-double-128],
5630 [use 128-bit long double by default])],
5631 gcc_cv_target_ldbl128="$with_long_double_128",
5632 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5633 [gcc_cv_target_ldbl128=no
5634 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5635 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5636 && gcc_cv_target_ldbl128=yes
5640 if test x$gcc_cv_target_ldbl128 = xyes; then
5641 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5642 [Define if TFmode long double should be the default])
5645 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5646 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5647 gcc_cv_libc_provides_hwcap_in_tcb=no
5650 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5653 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5654 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5655 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5658 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5659 gcc_cv_target_dl_iterate_phdr=unknown
5661 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5662 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5663 # libdl there, both complicating its use and breaking compatibility
5664 # between Solaris 10 updates.
5665 *-*-solaris2.1[[1-9]]*)
5666 # <link.h> needs both a dl_iterate_phdr declaration and support for
5667 # compilation with largefile support.
5668 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5669 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5670 gcc_cv_target_dl_iterate_phdr=yes
5672 gcc_cv_target_dl_iterate_phdr=no
5675 *-*-dragonfly* | *-*-freebsd*)
5676 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5677 gcc_cv_target_dl_iterate_phdr=yes
5679 gcc_cv_target_dl_iterate_phdr=no
5683 gcc_cv_target_dl_iterate_phdr=yes
5686 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5687 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5688 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5689 [Define if your target C library provides the `dl_iterate_phdr' function.])
5691 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5693 # We no longer support different GC mechanisms. Emit an error if
5694 # the user configures with --with-gc.
5696 [AS_HELP_STRING([--with-gc={page,zone}],
5697 [this option is not supported anymore. It used to choose
5698 the garbage collection mechanism to use with the compiler])],
5699 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5702 # Libraries to use on the host. This will normally be set by the top
5703 # level Makefile. Here we simply capture the value for our Makefile.
5704 if test -z "${HOST_LIBS+set}"; then
5709 # Use the system's zlib library.
5712 dnl Very limited version of automake's enable-maintainer-mode
5714 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5715 dnl maintainer-mode is disabled by default
5716 AC_ARG_ENABLE(maintainer-mode,
5717 [AS_HELP_STRING([--enable-maintainer-mode],
5718 [enable make rules and dependencies not useful
5719 (and sometimes confusing) to the casual installer])],
5720 maintainer_mode=$enableval,
5723 AC_MSG_RESULT($maintainer_mode)
5725 if test "$maintainer_mode" = "yes"; then
5732 dnl Whether to prevent multiple front-ends from linking at the same time
5734 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5735 AC_ARG_ENABLE(link-mutex,
5736 [AS_HELP_STRING([--enable-link-mutex],
5737 [avoid linking multiple front-ends at once to avoid thrashing
5738 on the build machine])],
5739 do_link_mutex=$enableval,
5741 AC_MSG_RESULT($do_link_mutex)
5743 if test "$do_link_mutex" = "yes"; then
5748 AC_SUBST(DO_LINK_MUTEX)
5754 # Make empty files to contain the specs and options for each language.
5755 # Then add #include lines to for a compiler that has specs and/or options.
5761 # These (without "all_") are set in each config-lang.in.
5762 # `language' must be a single word so is spelled singularly.
5765 all_outputs='Makefile'
5766 # List of language makefile fragments.
5768 # Additional files for gengtype
5769 all_gtfiles="$target_gtfiles"
5771 # These are the languages that are set in --enable-languages,
5772 # and are available in the GCC tree.
5773 all_selected_languages=
5775 # Add the language fragments.
5776 # Languages are added via two mechanisms. Some information must be
5777 # recorded in makefile variables, these are defined in config-lang.in.
5778 # We accumulate them and plug them into the main Makefile.
5779 # The other mechanism is a set of hooks for each of the main targets
5780 # like `clean', `install', etc.
5782 language_hooks="Make-hooks"
5784 for lang in ${srcdir}/*/config-lang.in
5787 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5789 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5790 if test "x$lang_alias" = x
5792 echo "$lang doesn't set \$language." 1>&2
5795 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5796 subdirs="$subdirs $subdir"
5798 # $gcc_subdir is where the gcc integration files are to be found
5799 # for a language, both for internal compiler purposes (compiler
5800 # sources implementing front-end to GCC tree converters), and for
5801 # build infrastructure purposes (Make-lang.in, etc.)
5803 # This will be <subdir> (relative to $srcdir) if a line like
5804 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5805 # is found in <langdir>/config-lang.in, and will remain <langdir>
5808 # Except for the language alias (fetched above), the regular
5809 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5810 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5811 # only this and the language alias.
5813 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5814 if [ "$gcc_subdir" = "" ]; then
5815 gcc_subdir="$subdir"
5818 case ",$enable_languages," in
5820 all_selected_languages="$all_selected_languages $lang_alias"
5821 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5822 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5834 . ${srcdir}/$gcc_subdir/config-lang.in
5835 if test "x$language" = x
5837 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5842 case ",$enable_languages," in
5845 for i in $subdir_requires; do
5846 test -f "${srcdir}/$i/config-lang.in" && continue
5854 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5855 if test -f $srcdir/$gcc_subdir/lang.opt; then
5856 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5857 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5859 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5860 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5862 all_languages="$all_languages $language"
5863 all_compilers="$all_compilers $compilers"
5864 all_outputs="$all_outputs $outputs"
5865 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5866 case ",$enable_languages," in
5868 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5870 AC_SUBST(enable_lto)
5877 for language in $all_selected_languages
5879 check_languages="$check_languages check-$language"
5882 # We link each language in with a set of hooks, reached indirectly via
5883 # lang.${target}. Only do so for selected languages.
5887 target_list="all.cross start.encap rest.encap tags \
5888 install-common install-man install-info install-pdf install-html dvi \
5889 pdf html uninstall info man srcextra srcman srcinfo \
5890 mostlyclean clean distclean maintainer-clean install-plugin"
5892 for t in $target_list
5895 for lang in $all_selected_languages
5899 echo "lang.$t: $x" >> Make-hooks
5903 # Option include files
5906 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5907 option_includes="option-includes.mk"
5908 AC_SUBST_FILE(option_includes)
5916 echo "dir ." > .gdbinit
5917 echo "dir ${srcdir}" >> .gdbinit
5918 if test x$gdb_needs_out_file_path = xyes
5920 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5922 if test "x$subdirs" != x; then
5925 echo "dir ${srcdir}/$s" >> .gdbinit
5928 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5929 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5931 # Put a breakpoint on __asan_report_error to help with debugging buffer
5934 *-fsanitize=address*)
5935 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5939 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5940 AC_SUBST(gcc_tooldir)
5943 # Find a directory in which to install a shared libgcc.
5945 AC_ARG_ENABLE(version-specific-runtime-libs,
5946 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5947 [specify that runtime libraries should be
5948 installed in a compiler-specific directory])])
5950 # Substitute configuration variables
5953 AC_SUBST(all_compilers)
5954 AC_SUBST(all_gtfiles)
5955 AC_SUBST(all_lang_makefrags)
5956 AC_SUBST(all_languages)
5957 AC_SUBST(all_selected_languages)
5958 AC_SUBST(build_exeext)
5959 AC_SUBST(build_install_headers_dir)
5960 AC_SUBST(build_xm_file_list)
5961 AC_SUBST(build_xm_include_list)
5962 AC_SUBST(build_xm_defines)
5963 AC_SUBST(build_file_translate)
5964 AC_SUBST(check_languages)
5965 AC_SUBST(cpp_install_dir)
5966 AC_SUBST(xmake_file)
5967 AC_SUBST(tmake_file)
5968 AC_SUBST(TM_ENDIAN_CONFIG)
5969 AC_SUBST(TM_MULTILIB_CONFIG)
5970 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5971 AC_SUBST(extra_gcc_objs)
5972 AC_SUBST(user_headers_inc_next_pre)
5973 AC_SUBST(user_headers_inc_next_post)
5974 AC_SUBST(extra_headers_list)
5975 AC_SUBST(extra_objs)
5976 AC_SUBST(extra_programs)
5977 AC_SUBST(float_h_file)
5978 AC_SUBST(gcc_config_arguments)
5979 AC_SUBST(gcc_gxx_include_dir)
5980 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5981 AC_SUBST(host_exeext)
5982 AC_SUBST(host_xm_file_list)
5983 AC_SUBST(host_xm_include_list)
5984 AC_SUBST(host_xm_defines)
5985 AC_SUBST(out_host_hook_obj)
5987 AC_SUBST(lang_opt_files)
5988 AC_SUBST(lang_specs_files)
5989 AC_SUBST(lang_tree_files)
5990 AC_SUBST(local_prefix)
5992 AC_SUBST(objc_boehm_gc)
5994 AC_SUBST(out_object_file)
5995 AC_SUBST(common_out_file)
5996 AC_SUBST(common_out_object_file)
5997 AC_SUBST(tm_file_list)
5998 AC_SUBST(tm_include_list)
5999 AC_SUBST(tm_defines)
6000 AC_SUBST(tm_p_file_list)
6001 AC_SUBST(tm_p_include_list)
6002 AC_SUBST(xm_file_list)
6003 AC_SUBST(xm_include_list)
6004 AC_SUBST(xm_defines)
6005 AC_SUBST(use_gcc_stdint)
6006 AC_SUBST(c_target_objs)
6007 AC_SUBST(cxx_target_objs)
6008 AC_SUBST(fortran_target_objs)
6009 AC_SUBST(target_cpu_default)
6011 AC_SUBST_FILE(language_hooks)
6014 if test x${build} = x${host} ; then
6015 if test x${host} = x${target} ; then
6016 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6018 echo "Links are now set up to build a cross-compiler" 1>&2
6019 echo " from ${host} to ${target}." 1>&2
6022 if test x${host} = x${target} ; then
6023 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6024 echo " for ${target}." 1>&2
6026 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6027 echo " from ${host} to ${target}." 1>&2
6031 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6032 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6034 AC_ARG_VAR(ISLLIBS,[How to link isl])
6035 AC_ARG_VAR(ISLINC,[How to find isl include files])
6036 if test "x${ISLLIBS}" != "x" ; then
6037 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6040 # Check whether isl_options_set_schedule_serialize_sccs is available;
6041 # it's new in isl 0.15.
6042 if test "x${ISLLIBS}" != "x" ; then
6043 saved_CXXFLAGS="$CXXFLAGS"
6044 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
6046 LIBS="$LIBS $ISLLIBS $GMPLIBS"
6048 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
6049 AC_TRY_LINK([#include <isl/schedule.h>],
6050 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
6051 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
6052 [ac_has_isl_options_set_schedule_serialize_sccs=no])
6053 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
6056 CXXFLAGS="$saved_CXXFLAGS"
6058 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
6059 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
6060 [Define if isl_options_set_schedule_serialize_sccs exists.])
6065 AC_SUBST(pluginlibs)
6066 AC_SUBST(enable_plugin)
6067 if test x"$enable_plugin" = x"yes"; then
6068 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6072 # Enable --enable-host-shared
6073 AC_ARG_ENABLE(host-shared,
6074 [AS_HELP_STRING([--enable-host-shared],
6075 [build host code as shared libraries])],
6076 [PICFLAG=-fPIC], [PICFLAG=])
6077 AC_SUBST(enable_host_shared)
6081 AC_ARG_ENABLE(libquadmath-support,
6082 [AS_HELP_STRING([--disable-libquadmath-support],
6083 [disable libquadmath support for Fortran])],
6084 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6085 ENABLE_LIBQUADMATH_SUPPORT=yes)
6086 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6087 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6088 [Define to 1 to enable libquadmath support])
6092 # Specify what hash style to use by default.
6093 AC_ARG_WITH([linker-hash-style],
6094 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6095 [specify the linker hash style])],
6096 [case x"$withval" in
6098 LINKER_HASH_STYLE=sysv
6101 LINKER_HASH_STYLE=gnu
6104 LINKER_HASH_STYLE=both
6107 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6110 [LINKER_HASH_STYLE=''])
6111 if test x"${LINKER_HASH_STYLE}" != x; then
6112 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6113 [The linker hash style])
6116 # Specify what should be the default of -fdiagnostics-color option.
6117 AC_ARG_WITH([diagnostics-color],
6118 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6119 [specify the default of -fdiagnostics-color option
6120 auto-if-env stands for -fdiagnostics-color=auto if
6121 GCC_COLOR environment variable is present and
6122 -fdiagnostics-color=never otherwise])],
6123 [case x"$withval" in
6125 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6128 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6131 DIAGNOSTICS_COLOR_DEFAULT=-1
6134 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6137 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6140 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6141 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6142 [The default for -fdiagnostics-color option])
6144 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6145 # of jit/jit-playback.c.
6146 cat > gcc-driver-name.h <<EOF
6147 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6150 # Check whether --enable-default-pie was given.
6151 AC_ARG_ENABLE(default-pie,
6152 [AS_HELP_STRING([--enable-default-pie],
6153 [enable Position Independent Executable as default])],
6154 enable_default_pie=$enableval,
6155 enable_default_pie=no)
6156 if test x$enable_default_pie = xyes ; then
6157 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6158 [Define if your target supports default PIE and it is enabled.])
6160 AC_SUBST([enable_default_pie])
6162 # Check if -fno-PIE works.
6163 AC_CACHE_CHECK([for -fno-PIE option],
6165 [saved_CXXFLAGS="$CXXFLAGS"
6166 CXXFLAGS="$CXXFLAGS -fno-PIE"
6167 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6168 [gcc_cv_c_no_fpie=yes],
6169 [gcc_cv_c_no_fpie=no])
6170 CXXFLAGS="$saved_CXXFLAGS"])
6171 if test "$gcc_cv_c_no_fpie" = "yes"; then
6172 NO_PIE_CFLAGS="-fno-PIE"
6174 AC_SUBST([NO_PIE_CFLAGS])
6176 # Check if -no-pie works.
6177 AC_CACHE_CHECK([for -no-pie option],
6179 [saved_LDFLAGS="$LDFLAGS"
6180 LDFLAGS="$LDFLAGS -no-pie"
6181 AC_LINK_IFELSE([int main(void) {return 0;}],
6182 [gcc_cv_no_pie=yes],
6184 LDFLAGS="$saved_LDFLAGS"])
6185 if test "$gcc_cv_no_pie" = "yes"; then
6186 NO_PIE_FLAG="-no-pie"
6188 AC_SUBST([NO_PIE_FLAG])
6190 # Check linker supports '-z bndplt'
6191 ld_bndplt_support=no
6192 AC_MSG_CHECKING(linker -z bndplt option)
6193 if test x"$ld_is_gold" = xno; then
6194 if test $in_tree_ld = yes ; then
6195 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6196 ld_bndplt_support=yes
6198 elif test x$gcc_cv_ld != x; then
6199 # Check if linker supports -a bndplt option
6200 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6201 ld_bndplt_support=yes
6205 if test x"$ld_bndplt_support" = xyes; then
6206 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6207 [Define if your linker supports -z bndplt])
6209 AC_MSG_RESULT($ld_bndplt_support)
6211 # Configure the subdirectories
6212 # AC_CONFIG_SUBDIRS($subdirs)
6214 # Create the Makefile
6215 # and configure language subdirectories
6216 AC_CONFIG_FILES($all_outputs)
6218 AC_CONFIG_COMMANDS([default],
6220 case ${CONFIG_HEADERS} in
6221 *auto-host.h:config.in*)
6224 # Make sure all the subdirs exist.
6225 for d in $subdirs doc build common c-family
6227 test -d $d || mkdir $d
6230 [subdirs='$subdirs'])