2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2015 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",
274 # With pre-defined ld
276 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
277 DEFAULT_LINKER="$with_ld")
278 if test x"${DEFAULT_LINKER+set}" = x"set"; then
279 if test ! -x "$DEFAULT_LINKER"; then
280 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
281 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
284 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
285 [Define to enable the use of a default linker.])
288 AC_MSG_CHECKING([whether a default linker was specified])
289 if test x"${DEFAULT_LINKER+set}" = x"set"; then
290 if test x"$gnu_ld_flag" = x"no"; then
291 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
293 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
299 # With demangler in GNU ld
300 AC_ARG_WITH(demangler-in-ld,
301 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
302 demangler_in_ld="$with_demangler_in_ld",
305 # ----------------------
306 # Find default assembler
307 # ----------------------
311 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
312 gas_flag="$with_gnu_as",
316 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
317 DEFAULT_ASSEMBLER="$with_as")
318 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
319 if test ! -x "$DEFAULT_ASSEMBLER"; then
320 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
321 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
324 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
325 [Define to enable the use of a default assembler.])
328 AC_MSG_CHECKING([whether a default assembler was specified])
329 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
330 if test x"$gas_flag" = x"no"; then
331 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
333 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
343 # If a non-executable a.out is present (e.g. created by GNU as above even if
344 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
345 # file, even when creating an executable, so an execution test fails.
346 # Remove possible default executable files to avoid this.
348 # FIXME: This really belongs into AC_PROG_CC and can be removed once
349 # Autoconf includes it.
350 rm -f a.out a.exe b.out
352 # Find the native compiler
355 ACX_PROG_GNAT([-I"$srcdir"/ada])
357 # Do configure tests with the C++ compiler, since that's what we build with.
360 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
361 # optimizations to be activated explicitly by the toplevel.
364 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
365 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
370 # Determine PICFLAG for target gnatlib.
371 GCC_PICFLAG_FOR_TARGET
372 AC_SUBST(PICFLAG_FOR_TARGET)
374 # -------------------------
375 # Check C compiler features
376 # -------------------------
378 AC_USE_SYSTEM_EXTENSIONS
384 # sizeof(char) is 1 by definition.
385 AC_CHECK_SIZEOF(void *)
386 AC_CHECK_SIZEOF(short)
388 AC_CHECK_SIZEOF(long)
389 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
391 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
392 AC_MSG_ERROR([uint64_t or int64_t not found])
395 # check what underlying integer type int64_t uses
396 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
397 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
401 template <typename T> struct X { };
403 struct X<long> { typedef long t; };
404 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
405 if test "$ac_cv_int64_t_type" = "long"; then
406 AC_DEFINE(INT64_T_IS_LONG, 1,
407 [Define if int64_t uses long as underlying type.])
409 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
413 template <typename T> struct X { };
415 struct X<long long> { typedef long long t; };
416 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
419 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
420 # If the host compiler is affected by the bug, and we build with optimization
421 # enabled (which happens e.g. when cross-compiling), the pool allocator may
422 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
423 # Since there is no reliable feature check for the presence of this bug,
424 # we simply use a GCC version number check. (This should never trigger for
425 # stages 2 or 3 of a native bootstrap.)
427 if test "$GCC" = yes; then
428 saved_CXXFLAGS="$CXXFLAGS"
430 # The following test compilation will succeed if and only if $CXX accepts
431 # -fno-strict-aliasing *and* is older than GCC 4.3.
432 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
433 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
435 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
436 #error compiler not affected by placement new aliasing bug
439 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
440 [AC_MSG_RESULT([no])])
442 CXXFLAGS="$saved_CXXFLAGS"
444 AC_SUBST(aliasing_flags)
448 # ---------------------
449 # Warnings and checking
450 # ---------------------
452 # Check $CC warning features (if it's GCC).
453 # We want to use -pedantic, but we don't want warnings about
457 # * C++11 narrowing conversions in { }
458 # So, we only use -pedantic if we can disable those warnings.
460 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
461 AC_ARG_ENABLE(build-format-warnings,
462 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
463 [],[enable_build_format_warnings=yes])
464 AS_IF([test $enable_build_format_warnings = no],
465 [wf_opt=-Wno-format],[wf_opt=])
466 ACX_PROG_CXX_WARNING_OPTS(
467 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
468 ACX_PROG_CC_WARNING_OPTS(
469 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
471 ACX_PROG_CXX_WARNING_OPTS(
472 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
473 ACX_PROG_CXX_WARNING_OPTS(
474 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
475 ACX_PROG_CC_WARNING_OPTS(
476 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
477 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
478 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
479 [-Wno-overlength-strings])), [strict_warn])
480 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
482 # The above macros do nothing if the compiler is not GCC. However, the
483 # Makefile has more goo to add other flags, so these variables are used
484 # to enable warnings only for GCC.
487 if test "x$GCC" = "xyes"; then
488 warn_cflags='$(GCC_WARN_CFLAGS)'
489 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
491 AC_SUBST(warn_cflags)
492 AC_SUBST(warn_cxxflags)
494 # Disable exceptions and RTTI if building with g++
495 ACX_PROG_CC_WARNING_OPTS(
496 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
499 # Enable expensive internal checks
501 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
505 AC_ARG_ENABLE(checking,
506 [AS_HELP_STRING([[--enable-checking[=LIST]]],
507 [enable expensive run-time checks. With LIST,
508 enable only specific categories of checks.
509 Categories are: yes,no,all,none,release.
510 Flags are: assert,df,fold,gc,gcac,gimple,misc,
511 rtlflag,rtl,runtime,tree,valgrind,types])],
512 [ac_checking_flags="${enableval}"],[
513 # Determine the default checks.
514 if test x$is_release = x ; then
515 ac_checking_flags=yes
517 ac_checking_flags=release
519 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
520 for check in release $ac_checking_flags
523 # these set all the flags to specific states
524 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
525 ac_fold_checking= ; ac_gc_checking=1 ;
526 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
527 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
528 ac_tree_checking=1 ; ac_valgrind_checking= ;
529 ac_types_checking=1 ;;
530 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
531 ac_fold_checking= ; ac_gc_checking= ;
532 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
533 ac_rtlflag_checking= ; ac_runtime_checking= ;
534 ac_tree_checking= ; ac_valgrind_checking= ;
535 ac_types_checking= ;;
536 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
537 ac_fold_checking=1 ; ac_gc_checking=1 ;
538 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
539 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
540 ac_tree_checking=1 ; ac_valgrind_checking= ;
541 ac_types_checking=1 ;;
542 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
543 ac_fold_checking= ; ac_gc_checking= ;
544 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
545 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
546 ac_tree_checking= ; ac_valgrind_checking= ;
547 ac_types_checking= ;;
548 # these enable particular checks
549 assert) ac_assert_checking=1 ;;
550 df) ac_df_checking=1 ;;
551 fold) ac_fold_checking=1 ;;
552 gc) ac_gc_checking=1 ;;
553 gcac) ac_gc_always_collect=1 ;;
554 gimple) ac_gimple_checking=1 ;;
555 misc) ac_checking=1 ;;
556 rtl) ac_rtl_checking=1 ;;
557 rtlflag) ac_rtlflag_checking=1 ;;
558 runtime) ac_runtime_checking=1 ;;
559 tree) ac_tree_checking=1 ;;
560 types) ac_types_checking=1 ;;
561 valgrind) ac_valgrind_checking=1 ;;
562 *) AC_MSG_ERROR(unknown check category $check) ;;
568 if test x$ac_checking != x ; then
569 AC_DEFINE(ENABLE_CHECKING, 1,
570 [Define if you want more run-time sanity checks. This one gets a grab
571 bag of miscellaneous but relatively cheap checks.])
572 nocommon_flag=-fno-common
574 AC_SUBST(nocommon_flag)
575 if test x$ac_df_checking != x ; then
576 AC_DEFINE(ENABLE_DF_CHECKING, 1,
577 [Define if you want more run-time sanity checks for dataflow.])
579 if test x$ac_assert_checking != x ; then
580 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
581 [Define if you want assertions enabled. This is a cheap check.])
583 if test x$ac_gimple_checking != x ; then
584 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
585 [Define if you want operations on GIMPLE (the basic data structure of
586 the high-level optimizers) to be checked for dynamic type safety at
587 runtime. This is moderately expensive.])
589 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
590 if test x$ac_runtime_checking != x ; then
591 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
592 [Define if you want runtime assertions enabled. This is a cheap check.])
594 if test x$ac_tree_checking != x ; then
595 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
596 [Define if you want all operations on trees (the basic data
597 structure of the front ends) to be checked for dynamic type safety
598 at runtime. This is moderately expensive.
602 if test x$ac_types_checking != x ; then
603 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
604 [Define if you want all gimple types to be verified after gimplifiation.
608 AC_SUBST(TREECHECKING)
609 if test x$ac_rtl_checking != x ; then
610 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
611 [Define if you want all operations on RTL (the basic data structure
612 of the optimizer and back end) to be checked for dynamic type safety
613 at runtime. This is quite expensive.])
615 if test x$ac_rtlflag_checking != x ; then
616 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
617 [Define if you want RTL flag accesses to be checked against the RTL
618 codes that are supported for each access macro. This is relatively
621 if test x$ac_gc_checking != x ; then
622 AC_DEFINE(ENABLE_GC_CHECKING, 1,
623 [Define if you want the garbage collector to do object poisoning and
624 other memory allocation checks. This is quite expensive.])
626 if test x$ac_gc_always_collect != x ; then
627 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
628 [Define if you want the garbage collector to operate in maximally
629 paranoid mode, validating the entire heap and collecting garbage at
630 every opportunity. This is extremely expensive.])
632 if test x$ac_fold_checking != x ; then
633 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
634 [Define if you want fold checked that it never destructs its argument.
635 This is quite expensive.])
637 valgrind_path_defines=
640 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
641 dnl # an if statement. This was the source of very frustrating bugs
642 dnl # in converting to autoconf 2.5x!
643 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
645 # It is certainly possible that there's valgrind but no valgrind.h.
646 # GCC relies on making annotations so we must have both.
647 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
648 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
649 [[#include <valgrind/memcheck.h>
650 #ifndef VALGRIND_DISCARD
651 #error VALGRIND_DISCARD not defined
653 [gcc_cv_header_valgrind_memcheck_h=yes],
654 [gcc_cv_header_valgrind_memcheck_h=no])
655 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
656 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
657 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
658 [[#include <memcheck.h>
659 #ifndef VALGRIND_DISCARD
660 #error VALGRIND_DISCARD not defined
662 [gcc_cv_header_memcheck_h=yes],
663 [gcc_cv_header_memcheck_h=no])
664 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
665 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
666 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
667 [Define if valgrind's valgrind/memcheck.h header is installed.])
669 if test $gcc_cv_header_memcheck_h = yes; then
670 AC_DEFINE(HAVE_MEMCHECK_H, 1,
671 [Define if valgrind's memcheck.h header is installed.])
674 if test x$ac_valgrind_checking != x ; then
675 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
676 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
677 if test "x$valgrind_path" = "x" \
678 || (test $have_valgrind_h = no \
679 && test $gcc_cv_header_memcheck_h = no \
680 && test $gcc_cv_header_valgrind_memcheck_h = no); then
681 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
683 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
684 valgrind_command="$valgrind_path -q"
685 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
686 [Define if you want to run subprograms and generated programs
687 through valgrind (a memory checker). This is extremely expensive.])
689 AC_SUBST(valgrind_path_defines)
690 AC_SUBST(valgrind_command)
692 # Enable code coverage collection
693 AC_ARG_ENABLE(coverage,
694 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
695 [enable compiler's code coverage collection.
696 Use to measure compiler performance and locate
697 unused parts of the compiler. With LEVEL, specify
698 optimization. Values are opt, noopt,
700 [case "${enableval}" in
702 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
705 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
708 # a.k.a. --disable-coverage
712 AC_MSG_ERROR(unknown coverage setting $enableval)
716 AC_SUBST(coverage_flags)
718 AC_ARG_ENABLE(gather-detailed-mem-stats,
719 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
720 [enable detailed memory allocation stats gathering])], [],
721 [enable_gather_detailed_mem_stats=no])
722 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
723 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
724 [Define to enable detailed memory allocation stats gathering.])
726 AC_ARG_ENABLE(valgrind-annotations,
727 [AS_HELP_STRING([--enable-valgrind-annotations],
728 [enable valgrind runtime interaction])], [],
729 [enable_valgrind_annotations=no])
730 if test x$enable_valgrind_annotations != xno \
731 || test x$ac_valgrind_checking != x; then
732 if (test $have_valgrind_h = no \
733 && test $gcc_cv_header_memcheck_h = no \
734 && test $gcc_cv_header_valgrind_memcheck_h = no); then
735 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
737 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
738 [Define to get calls to the valgrind runtime enabled.])
741 # -------------------------------
742 # Miscenalleous configure options
743 # -------------------------------
747 [AS_HELP_STRING([--with-stabs],
748 [arrange to use stabs instead of host debug format])],
752 # Determine whether or not multilibs are enabled.
753 AC_ARG_ENABLE(multilib,
754 [AS_HELP_STRING([--enable-multilib],
755 [enable library support for multiple ABIs])],
756 [], [enable_multilib=yes])
757 AC_SUBST(enable_multilib)
759 # Determine whether or not multiarch is enabled.
760 AC_ARG_ENABLE(multiarch,
761 [AS_HELP_STRING([--enable-multiarch],
762 [enable support for multiarch paths])],
763 [case "${enableval}" in
764 yes|no|auto) enable_multiarch=$enableval;;
765 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
766 esac], [enable_multiarch=auto])
767 if test x${enable_multiarch} = xauto; then
768 if test x${with_native_system_header_dir} != x; then
769 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
772 if test x$host != x$target && test "x$with_sysroot" = x; then
773 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
777 AC_MSG_CHECKING(for multiarch configuration)
778 AC_SUBST(enable_multiarch)
779 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
781 # needed for setting the multiarch name for soft-float/hard-float ABIs
785 # Enable __cxa_atexit for C++.
786 AC_ARG_ENABLE(__cxa_atexit,
787 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
790 # Enable C extension for decimal float if target supports it.
791 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
793 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
794 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
795 [Define to 1 to enable decimal float extension to C.])
797 # Use default_decimal_float for dependency.
798 enable_decimal_float=$default_decimal_float
800 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
801 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
802 [Define to 1 to specify that we are using the BID decimal floating
803 point format instead of DPD])
805 # Enable C extension for fixed-point arithmetic.
806 AC_ARG_ENABLE(fixed-point,
807 [AS_HELP_STRING([--enable-fixed-point],
808 [enable fixed-point arithmetic extension to C])],
813 enable_fixed_point=yes
817 enable_fixed_point=yes
820 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
821 enable_fixed_point=no
825 AC_SUBST(enable_fixed_point)
827 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
828 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
829 [Define to 1 to enable fixed-point arithmetic extension to C.])
832 # Pass with no value to take the default
833 # Pass with a value to specify a thread package
834 AC_ARG_ENABLE(threads,
835 [AS_HELP_STRING([[--enable-threads[=LIB]]],
836 [enable thread usage for target GCC,
837 using LIB thread package])],,
841 [AS_HELP_STRING([--enable-tls],
842 [enable or disable generation of tls code
843 overriding the assembler check for tls support])],
847 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
848 Valid choices are 'yes' and 'no'.]) ;;
852 AC_ARG_ENABLE(objc-gc,
853 [AS_HELP_STRING([--enable-objc-gc],
854 [enable the use of Boehm's garbage collector with
855 the GNU Objective-C runtime])],
856 if test x$enable_objc_gc = xno; then
864 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
865 dwarf2="$with_dwarf2",
868 AC_ARG_ENABLE(shared,
869 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
871 case $enable_shared in
875 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
876 for pkg in $enableval; do
877 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
884 ], [enable_shared=yes])
885 AC_SUBST(enable_shared)
888 [AS_HELP_STRING([--with-specs=SPECS],
889 [add SPECS to driver command-line processing])],
890 [CONFIGURE_SPECS=$withval],
893 AC_SUBST(CONFIGURE_SPECS)
895 ACX_PKGVERSION([GCC])
896 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
898 # Sanity check enable_languages in case someone does not run the toplevel
899 # configure # script.
900 AC_ARG_ENABLE(languages,
901 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
902 [case ,${enable_languages}, in
904 # go safe -- we cannot be much sure without the toplevel
906 # analysis of which target libs are present and usable
910 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
915 enable_languages=c,${enable_languages}
918 [enable_languages=c])
920 if test x"$enable_as_accelerator_for" != x; then
921 AC_DEFINE(ACCEL_COMPILER, 1,
922 [Define if this compiler should be built as the offload target compiler.])
923 enable_as_accelerator=yes
926 # In this case we expect offload compiler to be built as native, so we
927 # need to rename the driver to avoid clashes with host's drivers.
928 program_transform_name="s&^&${target}-&" ;;
930 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
931 program_transform_name=`echo $program_transform_name | sed $sedscript`
932 accel_dir_suffix=/accel/${target_noncanonical}
933 real_target_noncanonical=${enable_as_accelerator_for}
935 AC_SUBST(enable_as_accelerator)
936 AC_SUBST(real_target_noncanonical)
937 AC_SUBST(accel_dir_suffix)
939 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
940 tgt=`echo $tgt | sed 's/=.*//'`
941 if test x"$offload_targets" = x; then
944 offload_targets="$offload_targets,$tgt"
947 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
948 [Define to offload targets, separated by commas.])
949 if test x"$offload_targets" != x; then
950 AC_DEFINE(ENABLE_OFFLOADING, 1,
951 [Define this to enable support for offloading.])
954 AC_ARG_WITH(multilib-list,
955 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
957 with_multilib_list=default)
959 # -------------------------
960 # Checks for other programs
961 # -------------------------
965 # Find some useful tools
967 # We need awk to create options.c and options.h.
968 # Bail out if it's missing.
970 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
977 AC_SUBST(ranlib_flags)
981 # See if cmp has --ignore-initial.
982 gcc_AC_PROG_CMP_IGNORE_INITIAL
984 # See if we have the mktemp command.
985 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
987 # See if makeinfo has been installed and is modern enough
988 # that we can use it.
989 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
990 [GNU texinfo.* \([0-9][0-9.]*\)],
991 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
992 if test $gcc_cv_prog_makeinfo_modern = no; then
994 *** Makeinfo is missing or too old.
995 *** Info documentation will not be built.])
1000 AC_SUBST(BUILD_INFO)
1002 # Is pod2man recent enough to regenerate manpages?
1003 AC_MSG_CHECKING([for recent Pod::Man])
1004 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1006 GENERATED_MANPAGES=generated-manpages
1011 AC_SUBST(GENERATED_MANPAGES)
1013 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1016 dnl Don't use AC_PROG_LEX; we insist on flex.
1017 dnl LEXLIB is not useful in gcc.
1018 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1021 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1023 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1024 # check for build == host before using them.
1027 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1028 && test -d ../binutils ; then
1029 NM='${objdir}/../binutils/nm-new'
1031 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1035 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1036 && test -d ../binutils ; then
1037 AR='${objdir}/../binutils/ar'
1039 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1042 # The jit documentation looks better if built with sphinx, but can be
1043 # built with texinfo if sphinx is not available.
1044 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1045 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1047 # --------------------
1048 # Checks for C headers
1049 # --------------------
1051 # Need to reject headers which give warnings, so that the -Werror bootstrap
1052 # works later. *sigh* This needs to come before all header checks.
1059 AC_HEADER_TIOCGWINSZ
1060 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1061 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1062 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1063 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1065 # Check for thread headers.
1066 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1067 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1069 # These tests can't be done till we know if we have limits.h.
1073 # ----------------------
1074 # Checks for C++ headers
1075 # ----------------------
1077 dnl Autoconf will give an error in the configure script if there is no
1078 dnl C++ preprocessor. Hack to prevent that.
1079 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1081 m4_popdef([AC_MSG_ERROR])[]dnl
1083 AC_CHECK_HEADERS(unordered_map)
1084 AC_CHECK_HEADERS(tr1/unordered_map)
1085 AC_CHECK_HEADERS(ext/hash_map)
1088 # Dependency checking.
1092 AC_CONFIG_COMMANDS([gccdepdir],[
1093 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1094 for lang in $subdirs c-family common
1096 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1097 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1099 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1106 # These libraries may be used by collect2.
1107 # We may need a special search path to get them linked.
1108 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1110 for libs in '' -lld -lmld \
1111 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1112 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1115 AC_TRY_LINK_FUNC(ldopen,
1116 [gcc_cv_collect2_libs="$libs"; break])
1119 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1120 case $gcc_cv_collect2_libs in
1122 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1124 AC_SUBST(COLLECT2_LIBS)
1126 # When building Ada code on Alpha, we need exc_resume which is usually in
1127 # -lexc. So test for it.
1130 AC_SEARCH_LIBS(exc_resume, exc)
1133 AC_SUBST(GNAT_LIBEXC)
1135 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1138 AC_SEARCH_LIBS(kstat_open, kstat)
1139 EXTRA_GCC_LIBS="$LIBS"
1141 AC_SUBST(EXTRA_GCC_LIBS)
1143 # Some systems put ldexp and frexp in libm instead of libc; assume
1144 # they're both in the same place. jcf-dump needs them.
1147 AC_SEARCH_LIBS(ldexp, m)
1152 # Use <inttypes.h> only if it exists,
1153 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1155 AC_MSG_CHECKING(for inttypes.h)
1156 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1157 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1158 [[#define __STDC_FORMAT_MACROS
1159 #include <sys/types.h>
1160 #include <inttypes.h>]],
1165 [gcc_cv_header_inttypes_h=yes],
1166 [gcc_cv_header_inttypes_h=no])])
1167 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1168 if test $gcc_cv_header_inttypes_h = yes; then
1169 AC_DEFINE(HAVE_INTTYPES_H, 1,
1170 [Define if you have a working <inttypes.h> header file.])
1173 dnl Disabled until we have a complete test for buggy enum bitfields.
1174 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1176 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1177 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1178 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1179 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1180 putchar_unlocked putc_unlocked)
1181 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1182 popen sysconf strsignal getrusage nl_langinfo \
1183 gettimeofday mbstowcs wcswidth mmap setlocale \
1184 gcc_UNLOCKED_FUNCS madvise)
1186 if test x$ac_cv_func_mbstowcs = xyes; then
1187 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1188 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1194 [gcc_cv_func_mbstowcs_works=yes],
1195 [gcc_cv_func_mbstowcs_works=no],
1196 [gcc_cv_func_mbstowcs_works=yes])])
1197 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1198 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1199 [Define this macro if mbstowcs does not crash when its
1200 first argument is NULL.])
1204 AC_CHECK_TYPE(ssize_t, int)
1205 AC_CHECK_TYPE(caddr_t, char *)
1207 GCC_AC_FUNC_MMAP_BLACKLIST
1211 # Under VMS, vfork works very differently than on Unix. The standard test
1212 # won't work, and it isn't easily adaptable. It makes more sense to
1214 ac_cv_func_vfork_works=yes
1221 # Until we have in-tree GNU iconv:
1223 if test -f "$LTLIBICONV"; then
1224 LIBICONV_DEP=$LTLIBICONV
1226 AC_SUBST(LIBICONV_DEP)
1232 # We will need to find libiberty.h and ansidecl.h
1233 saved_CFLAGS="$CFLAGS"
1234 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1235 saved_CXXFLAGS="$CXXFLAGS"
1236 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1238 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1239 # normal autoconf function for these. But force definition of
1240 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1241 # basename handling in libiberty.h.
1242 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1243 #undef HAVE_DECL_BASENAME
1244 #define HAVE_DECL_BASENAME 1
1245 #include "ansidecl.h"
1246 #include "system.h"])
1248 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1249 madvise stpcpy strnlen strsignal strverscmp \
1250 strtol strtoul strtoll strtoull setenv unsetenv \
1251 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1252 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1253 #include "ansidecl.h"
1254 #include "system.h"])
1256 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1257 #include "ansidecl.h"
1259 #ifdef HAVE_SYS_RESOURCE_H
1260 #include <sys/resource.h>
1264 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1265 #include "ansidecl.h"
1267 #ifdef HAVE_SYS_RESOURCE_H
1268 #include <sys/resource.h>
1270 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1271 [Define to `long' if <sys/resource.h> doesn't define.])])
1273 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1274 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1275 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1276 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1277 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1278 #include "ansidecl.h"
1287 gcc_AC_CHECK_DECLS(times, , ,[
1288 #include "ansidecl.h"
1290 #ifdef HAVE_SYS_TIMES_H
1291 #include <sys/times.h>
1295 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1296 #include "ansidecl.h"
1301 # More time-related stuff.
1302 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1303 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1304 #include "ansidecl.h"
1306 #ifdef HAVE_SYS_TIMES_H
1307 #include <sys/times.h>
1309 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1310 if test $ac_cv_struct_tms = yes; then
1311 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1312 [Define if <sys/times.h> defines struct tms.])
1315 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1316 # revisit after autoconf 2.50.
1317 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1318 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1319 #include "ansidecl.h"
1321 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1322 if test $gcc_cv_type_clock_t = yes; then
1323 AC_DEFINE(HAVE_CLOCK_T, 1,
1324 [Define if <time.h> defines clock_t.])
1327 # Check if F_SETLKW is supported by fcntl.
1328 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1329 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1330 #include <fcntl.h>]], [[
1336 return fcntl (1, F_SETLKW, &fl);]])],
1337 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1338 if test $ac_cv_f_setlkw = yes; then
1339 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1340 [Define if F_SETLKW supported by fcntl.])
1343 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1344 CFLAGS="$saved_CFLAGS"
1345 CXXFLAGS="$saved_CXXFLAGS"
1347 # mkdir takes a single argument on some systems.
1348 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1356 # With Setjmp/Longjmp based exception handling.
1357 AC_ARG_ENABLE(sjlj-exceptions,
1358 [AS_HELP_STRING([--enable-sjlj-exceptions],
1359 [arrange to use setjmp/longjmp exception handling])],
1362 if test $enableval != yes; then
1363 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1368 force_sjlj_exceptions=yes],
1371 force_sjlj_exceptions=yes
1375 force_sjlj_exceptions=yes
1379 force_sjlj_exceptions=no
1382 if test $force_sjlj_exceptions = yes; then
1383 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1384 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1385 [Define 0/1 to force the choice for exception handling model.])
1388 # --------------------------------------------------------
1389 # Build, host, and target specific configuration fragments
1390 # --------------------------------------------------------
1392 # Collect build-machine-specific information.
1393 . ${srcdir}/config.build
1395 # Collect host-machine-specific information.
1396 . ${srcdir}/config.host
1400 # Collect target-machine-specific information.
1401 . ${srcdir}/config.gcc
1403 extra_objs="${host_extra_objs} ${extra_objs}"
1404 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1406 # Default the target-machine variables that were not explicitly set.
1407 if test x"$tm_file" = x
1408 then tm_file=$cpu_type/$cpu_type.h; fi
1410 if test x"$extra_headers" = x
1411 then extra_headers=; fi
1413 if test x$md_file = x
1414 then md_file=$cpu_type/$cpu_type.md; fi
1416 if test x$out_file = x
1417 then out_file=$cpu_type/$cpu_type.c; fi
1419 if test x"$tmake_file" = x
1420 then tmake_file=$cpu_type/t-$cpu_type
1423 # Support --enable-initfini-array.
1424 if test x$enable_initfini_array != xno; then
1425 tm_file="${tm_file} initfini-array.h"
1428 if test x"$dwarf2" = xyes
1429 then tm_file="$tm_file tm-dwarf2.h"
1432 # Say what files are being used for the output code and MD file.
1433 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1434 echo "Using \`$srcdir/config/$md_file' as machine description file."
1436 # If any of the xm_file variables contain nonexistent files, warn
1437 # about them and drop them.
1440 for x in $build_xm_file; do
1441 if test -f $srcdir/config/$x
1443 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1449 for x in $host_xm_file; do
1450 if test -f $srcdir/config/$x
1452 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1458 for x in $xm_file; do
1459 if test -f $srcdir/config/$x
1461 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1467 for f in $tm_file; do
1470 if test $count = ax; then
1471 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1473 echo "Using the following target machine macro files:"
1474 for f in $tm_file; do
1475 echo " $srcdir/config/$f"
1479 if test x$use_long_long_for_widest_fast_int = xyes; then
1480 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1481 [Define to 1 if the 'long long' type is wider than 'long' but still
1482 efficiently supported by the host hardware.])
1485 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1486 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1488 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1489 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1492 for f in $host_xm_file; do
1495 if test $count = a; then
1497 elif test $count = ax; then
1498 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1500 echo "Using the following host machine macro files:"
1501 for f in $host_xm_file; do
1502 echo " $srcdir/config/$f"
1505 echo "Using ${out_host_hook_obj} for host machine hooks."
1507 if test "$host_xm_file" != "$build_xm_file"; then
1509 for f in $build_xm_file; do
1512 if test $count = a; then
1514 elif test $count = ax; then
1515 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1517 echo "Using the following build machine macro files:"
1518 for f in $build_xm_file; do
1519 echo " $srcdir/config/$f"
1524 if test -n "$configured_native_system_header_dir"; then
1525 native_system_header_dir=$configured_native_system_header_dir
1527 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1528 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1532 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1533 gcc_cv_mcontext_underscores,
1535 #include <sys/cdefs.h>
1536 #include <sys/signal.h>
1537 #include <ucontext.h>
1538 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1540 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1541 if test $gcc_cv_mcontext_underscores = yes; then
1542 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1543 [mcontext_t fields start with __])
1552 # Check if a valid thread package
1553 case ${enable_threads} in
1556 target_thread_file='single'
1560 target_thread_file='single'
1562 aix | dce | lynx | mipssde | posix | rtems | \
1563 single | tpf | vxworks | win32)
1564 target_thread_file=${enable_threads}
1567 echo "${enable_threads} is an unknown thread package" 1>&2
1572 if test x${thread_file} = x; then
1573 # No thread file set by target-specific clauses in config.gcc,
1574 # so use file chosen by default logic above
1575 thread_file=${target_thread_file}
1583 if test x$enable___cxa_atexit = xyes || \
1584 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1585 if test x$host = x$target; then
1587 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1588 # keyed to flag_use_cxa_atexit
1596 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1597 [echo "__cxa_atexit can't be enabled on this target"])
1601 # We can't check for __cxa_atexit when building a cross, so assume
1605 if test x$use_cxa_atexit = xyes; then
1606 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1607 [Define if you want to use __cxa_atexit, rather than atexit, to
1608 register C++ destructors for local statics and global objects.
1609 This is essential for fully standards-compliant handling of
1610 destructors, but requires __cxa_atexit in libc.])
1614 # Look for a file containing extra machine modes.
1615 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1616 extra_modes_file='$(srcdir)'/config/${extra_modes}
1617 AC_SUBST(extra_modes_file)
1618 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1619 [Define to the name of a file containing a list of extra machine modes
1620 for this architecture.])
1623 # Convert extra_options into a form suitable for Makefile use.
1626 for f in $extra_options; do
1627 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1628 all_opt_files="$all_opt_files $srcdir/config/$f"
1630 AC_SUBST(extra_opt_files)
1632 # auto-host.h is the file containing items generated by autoconf and is
1633 # the first file included by config.h.
1634 # If host=build, it is correct to have bconfig include auto-host.h
1635 # as well. If host!=build, we are in error and need to do more
1636 # work to find out the build config parameters.
1637 if test x$host = x$build
1639 build_auto=auto-host.h
1641 # We create a subdir, then run autoconf in the subdir.
1642 # To prevent recursion we set host and build for the new
1643 # invocation of configure to the build for this invocation
1650 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1651 *) realsrcdir=../${srcdir};;
1653 # Clearing GMPINC is necessary to prevent host headers being
1654 # used by the build compiler. Defining GENERATOR_FILE stops
1655 # system.h from including gmp.h.
1656 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1657 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1658 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1659 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1660 ${realsrcdir}/configure \
1661 --enable-languages=${enable_languages-all} \
1662 --target=$target_alias --host=$build_alias --build=$build_alias
1664 # We just finished tests for the build machine, so rename
1665 # the file auto-build.h in the gcc directory.
1666 mv auto-host.h ../auto-build.h
1669 build_auto=auto-build.h
1671 AC_SUBST(build_subdir)
1673 tm_file="${tm_file} defaults.h"
1674 tm_p_file="${tm_p_file} tm-preds.h"
1675 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1676 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1677 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1678 # put this back in temporarily.
1679 xm_file="auto-host.h ansidecl.h ${xm_file}"
1686 # Compile in configure arguments.
1687 if test -f configargs.h ; then
1688 # Being re-configured.
1689 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1690 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1692 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1695 # Double all backslashes and backslash all quotes to turn
1696 # gcc_config_arguments into a C string.
1697 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1698 $gcc_config_arguments
1700 gcc_config_arguments_str=`cat conftest.out`
1703 cat > configargs.h <<EOF
1704 /* Generated automatically. */
1705 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1706 static const char thread_model[] = "$thread_file";
1708 static const struct {
1709 const char *name, *value;
1710 } configure_default_options[] = $configure_default_options;
1715 gcc_BASEVER=`cat $srcdir/BASE-VER`
1716 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1717 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1718 if test -f $srcdir/REVISION ; then
1719 gcc_REVISION=`cat $srcdir/REVISION`
1723 cat > plugin-version.h <<EOF
1724 #include "configargs.h"
1726 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1727 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1728 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1729 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1731 static char basever[] = "$gcc_BASEVER";
1732 static char datestamp[] = "$gcc_DATESTAMP";
1733 static char devphase[] = "$gcc_DEVPHASE";
1734 static char revision[] = "$gcc_REVISION";
1736 /* FIXME plugins: We should make the version information more precise.
1737 One way to do is to add a checksum. */
1739 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1741 configuration_arguments};
1745 # Internationalization
1746 ZW_GNU_GETTEXT_SISTER_DIR
1748 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1749 # -liconv on the link line twice.
1750 case "$LIBINTL" in *$LIBICONV*)
1754 AC_ARG_ENABLE(secureplt,
1755 [AS_HELP_STRING([--enable-secureplt],
1756 [enable -msecure-plt by default for PowerPC])],
1759 AC_ARG_ENABLE(leading-mingw64-underscores,
1760 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1761 [enable leading underscores on 64 bit mingw targets]),
1763 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1764 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1765 [Define if we should use leading underscore on 64 bit mingw targets])])
1768 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1771 AC_ARG_ENABLE(frame-pointer,
1772 [AS_HELP_STRING([--enable-frame-pointer],
1773 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1776 linux* | darwin[[8912]]*)
1777 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1779 enable_frame_pointer=no
1782 enable_frame_pointer=yes
1787 # Windows32 Registry support for specifying GCC installation paths.
1788 AC_ARG_ENABLE(win32-registry,
1789 [AS_HELP_STRING([--disable-win32-registry],
1790 [disable lookup of installation paths in the
1791 Registry on Windows hosts])
1792 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1793 AS_HELP_STRING([--enable-win32-registry=KEY],
1794 [use KEY instead of GCC version as the last portion
1795 of the registry key])],,)
1798 win32 | pe | cygwin* | mingw32*)
1799 if test "x$enable_win32_registry" != xno; then
1800 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1803 if test "x$enable_win32_registry" != xno; then
1804 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1805 [Define to 1 if installation paths should be looked up in the Windows
1806 Registry. Ignored on non-Windows hosts.])
1808 if test "x$enable_win32_registry" != xyes \
1809 && test "x$enable_win32_registry" != x; then
1810 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1811 [Define to be the last component of the Windows registry key under which
1812 to look for installation paths. The full key used will be
1813 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1814 The default is the GCC version number.])
1820 # Get an absolute path to the GCC top-level source directory
1821 holddir=`${PWDCMD-pwd}`
1823 topdir=`${PWDCMD-pwd}`
1826 # Conditionalize the makefile for this host machine.
1828 for f in ${host_xmake_file}
1830 if test -f ${srcdir}/config/$f
1832 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1836 # Conditionalize the makefile for this target machine.
1838 for f in ${tmake_file}
1840 if test -f ${srcdir}/config/$f
1842 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1845 tmake_file="${tmake_file_}"
1847 out_object_file=`basename $out_file .c`.o
1848 common_out_object_file=`basename $common_out_file .c`.o
1850 tm_file_list="options.h"
1851 tm_include_list="options.h insn-constants.h"
1852 for f in $tm_file; do
1855 f=`echo $f | sed 's/^..//'`
1856 tm_file_list="${tm_file_list} $f"
1857 tm_include_list="${tm_include_list} $f"
1860 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1861 tm_include_list="${tm_include_list} $f"
1864 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1865 tm_include_list="${tm_include_list} config/$f"
1872 for f in $tm_p_file; do
1875 tm_p_file_list="${tm_p_file_list} $f"
1876 tm_p_include_list="${tm_p_include_list} $f"
1879 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1880 tm_p_include_list="${tm_p_include_list} config/$f"
1886 for f in $xm_file; do
1889 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1890 xm_include_list="${xm_include_list} $f"
1893 xm_file_list="${xm_file_list} $f"
1894 xm_include_list="${xm_include_list} $f"
1897 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1898 xm_include_list="${xm_include_list} config/$f"
1904 host_xm_include_list=
1905 for f in $host_xm_file; do
1908 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1909 host_xm_include_list="${host_xm_include_list} $f"
1912 host_xm_file_list="${host_xm_file_list} $f"
1913 host_xm_include_list="${host_xm_include_list} $f"
1916 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1917 host_xm_include_list="${host_xm_include_list} config/$f"
1923 for f in $build_xm_file; do
1926 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1927 build_xm_include_list="${build_xm_include_list} $f"
1929 auto-build.h | auto-host.h )
1930 build_xm_file_list="${build_xm_file_list} $f"
1931 build_xm_include_list="${build_xm_include_list} $f"
1934 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1935 build_xm_include_list="${build_xm_include_list} config/$f"
1940 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1941 # cross-compiler which does not use the native headers and libraries.
1942 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1943 CROSS= AC_SUBST(CROSS)
1944 ALL=all.internal AC_SUBST(ALL)
1945 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1947 if test "x$with_build_sysroot" != x; then
1948 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1950 # This value is used, even on a native system, because
1951 # CROSS_SYSTEM_HEADER_DIR is just
1952 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1953 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1956 if test x$host != x$target
1958 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1960 SYSTEM_HEADER_DIR=$build_system_header_dir
1961 case "$host","$target" in
1962 # Darwin crosses can use the host system's libraries and headers,
1963 # because of the fat library support. Of course, it must be the
1964 # same version of Darwin on both sides. Allow the user to
1965 # just say --target=foo-darwin without a version number to mean
1966 # "the version on this system".
1967 *-*-darwin*,*-*-darwin*)
1968 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1969 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1970 if test $hostos = $targetos -o $targetos = darwin ; then
1972 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1977 i?86-*-*,x86_64-*-* \
1978 | powerpc*-*-*,powerpc64*-*-*)
1979 CROSS="$CROSS -DNATIVE_CROSS" ;;
1984 if test "x$with_headers" = x; then
1991 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1992 SYSTEM_HEADER_DIR=$build_system_header_dir
1995 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
1996 if test "x$with_headers" != x; then
1997 target_header_dir=$with_headers
1998 elif test "x$with_sysroot" = x; then
1999 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2000 elif test "x$with_build_sysroot" != "x"; then
2001 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2002 elif test "x$with_sysroot" = xyes; then
2003 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2005 target_header_dir="${with_sysroot}${native_system_header_dir}"
2008 target_header_dir=${native_system_header_dir}
2011 # If this is a cross-compiler that does not
2012 # have its own set of headers then define
2015 # If this is using newlib, without having the headers available now,
2016 # then define inhibit_libc in LIBGCC2_CFLAGS.
2017 # This prevents libgcc2 from containing any code which requires libc
2019 : ${inhibit_libc=false}
2020 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2021 test x$with_newlib = xyes ; } &&
2022 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2025 AC_SUBST(inhibit_libc)
2027 # When building gcc with a cross-compiler, we need to adjust things so
2028 # that the generator programs are still built with the native compiler.
2029 # Also, we cannot run fixincludes.
2031 # These are the normal (build=host) settings:
2032 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2033 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2034 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2035 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2036 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2037 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2039 # And these apply if build != host, or we are generating coverage data
2040 if test x$build != x$host || test "x$coverage_flags" != x
2042 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2043 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2044 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2047 # Expand extra_headers to include complete path.
2048 # This substitutes for lots of t-* files.
2050 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2051 for file in ${extra_headers} ; do
2052 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2055 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2056 if test x"$use_gcc_tgmath" = xyes
2057 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2060 # Define collect2 in Makefile.
2061 case $host_can_use_collect2 in
2063 *) collect2='collect2$(exeext)' ;;
2065 AC_SUBST([collect2])
2067 # Add a definition of USE_COLLECT2 if system wants one.
2068 case $use_collect2 in
2069 no) use_collect2= ;;
2072 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2073 xm_defines="${xm_defines} USE_COLLECT2"
2074 case $host_can_use_collect2 in
2076 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2082 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2083 [Define to the name of the LTO plugin DSO that must be
2084 passed to the linker's -plugin=LIB option.])
2086 # ---------------------------
2087 # Assembler & linker features
2088 # ---------------------------
2090 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2091 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2092 # However when ld-new is first executed from the build tree, libtool will
2093 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2094 # to the build tree. While doing this we need to use the previous-stage
2095 # linker, or we have an infinite loop. The presence of a shell script as
2096 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2097 # the gcc/collect-ld script. So we need to know how libtool works, or
2098 # exec-tool will fail.
2100 m4_defun([_LT_CONFIG_COMMANDS], [])
2103 AC_SUBST(enable_fast_install)
2105 # Identify the assembler which will work hand-in-glove with the newly
2106 # built GCC, so that we can examine its features. This is the assembler
2107 # which will be driven by the driver program.
2109 # If build != host, and we aren't building gas in-tree, we identify a
2110 # build->target assembler and hope that it will have the same features
2111 # as the host->target assembler we'll be using.
2112 gcc_cv_gas_major_version=
2113 gcc_cv_gas_minor_version=
2114 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2116 m4_pattern_allow([AS_FOR_TARGET])dnl
2117 AS_VAR_SET_IF(gcc_cv_as,, [
2118 if test -x "$DEFAULT_ASSEMBLER"; then
2119 gcc_cv_as="$DEFAULT_ASSEMBLER"
2120 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2121 && test -f ../gas/Makefile \
2122 && test x$build = x$host; then
2123 gcc_cv_as=../gas/as-new$build_exeext
2124 elif test -x as$build_exeext; then
2125 # Build using assembler in the current directory.
2126 gcc_cv_as=./as$build_exeext
2127 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2128 gcc_cv_as="$AS_FOR_TARGET"
2130 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2133 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2134 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2135 case "$ORIGINAL_AS_FOR_TARGET" in
2136 ./as | ./as$build_exeext) ;;
2137 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2140 AC_MSG_CHECKING(what assembler to use)
2141 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2142 # Single tree build which includes gas. We want to prefer it
2143 # over whatever linker top-level may have detected, since
2144 # we'll use what we're building after installation anyway.
2145 AC_MSG_RESULT(newly built gas)
2147 _gcc_COMPUTE_GAS_VERSION
2148 in_tree_gas_is_elf=no
2149 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2150 || (grep 'obj_format = multi' ../gas/Makefile \
2151 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2153 in_tree_gas_is_elf=yes
2156 AC_MSG_RESULT($gcc_cv_as)
2162 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2163 [case "${enableval}" in
2169 install_gold_as_default=no
2171 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2172 [case "${enableval}" in
2174 install_gold_as_default=yes
2177 if test x${default_ld} != x; then
2178 install_gold_as_default=yes
2184 AC_MSG_ERROR([invalid --enable-gold argument])
2188 # Identify the linker which will work hand-in-glove with the newly
2189 # built GCC, so that we can examine its features. This is the linker
2190 # which will be driven by the driver program.
2192 # If build != host, and we aren't building gas in-tree, we identify a
2193 # build->target linker and hope that it will have the same features
2194 # as the host->target linker we'll be using.
2195 gcc_cv_gld_major_version=
2196 gcc_cv_gld_minor_version=
2197 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2198 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2199 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2201 AS_VAR_SET_IF(gcc_cv_ld,, [
2202 if test -x "$DEFAULT_LINKER"; then
2203 gcc_cv_ld="$DEFAULT_LINKER"
2204 elif test $install_gold_as_default = yes \
2205 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2206 && test -f ../gold/Makefile \
2207 && test x$build = x$host; then
2208 gcc_cv_ld=../gold/ld-new$build_exeext
2209 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2210 && test -f ../ld/Makefile \
2211 && test x$build = x$host; then
2212 gcc_cv_ld=../ld/ld-new$build_exeext
2213 elif test -x collect-ld$build_exeext; then
2214 # Build using linker in the current directory.
2215 gcc_cv_ld=./collect-ld$build_exeext
2216 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2217 gcc_cv_ld="$LD_FOR_TARGET"
2219 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2222 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2223 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2224 # if the PLUGIN_LD is set ld-new, just have it as ld
2225 # as that is the installed named.
2226 if test x$PLUGIN_LD_SUFFIX = xld-new \
2227 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2230 AC_ARG_WITH(plugin-ld,
2231 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2232 [if test x"$withval" != x; then
2233 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2234 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2236 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2237 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2239 # Check to see if we are using gold instead of ld
2240 AC_MSG_CHECKING(whether we are using gold)
2242 if test x$gcc_cv_ld != x; then
2243 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2244 | grep "GNU gold" > /dev/null; then
2248 AC_MSG_RESULT($ld_is_gold)
2250 AC_MSG_CHECKING(gold linker with split stack support as non default)
2251 # Check to see if default ld is not gold, but gold is
2252 # available and has support for split stack. If gcc was configured
2253 # with gold then no checking is done.
2255 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2257 # For platforms other than powerpc64*, enable as appropriate.
2260 ld_gold=`which ${gcc_cv_ld}.gold`
2261 # Make sure this gold has minimal split stack support
2262 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2263 ld_vers=`$ld_gold --version | sed 1q`
2264 gold_vers=`echo $ld_vers | sed -n \
2265 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2267 # check that the gold version contains the complete split stack support
2268 # on powerpc64 big and little endian
2270 case "$gold_vers" in
2271 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2273 *) gold_non_default=no
2279 if test $gold_non_default = yes; then
2280 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2281 [Define if the gold linker supports split stack and is available as a non-default])
2284 AC_MSG_RESULT($gold_non_default)
2286 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2287 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2288 case "$ORIGINAL_LD_FOR_TARGET" in
2289 ./collect-ld | ./collect-ld$build_exeext) ;;
2290 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2293 AC_MSG_CHECKING(what linker to use)
2294 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2295 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2296 # Single tree build which includes ld. We want to prefer it
2297 # over whatever linker top-level may have detected, since
2298 # we'll use what we're building after installation anyway.
2299 AC_MSG_RESULT(newly built ld)
2301 in_tree_ld_is_elf=no
2302 if (grep 'EMUL = .*elf' ../ld/Makefile \
2303 || grep 'EMUL = .*linux' ../ld/Makefile \
2304 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2305 in_tree_ld_is_elf=yes
2306 elif test "$ld_is_gold" = yes; then
2307 in_tree_ld_is_elf=yes
2309 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
2312 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2313 if test x$gcc_cv_gld_version != x; then
2317 case $gcc_cv_gld_version in
2320 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2323 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2324 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2326 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2327 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2329 AC_MSG_RESULT($gcc_cv_ld)
2331 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2332 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2333 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2336 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2337 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2339 # Figure out what nm we will be using.
2340 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2341 AS_VAR_SET_IF(gcc_cv_nm,, [
2342 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2343 && test -f ../binutils/Makefile \
2344 && test x$build = x$host; then
2345 gcc_cv_nm=../binutils/nm-new$build_exeext
2346 elif test -x nm$build_exeext; then
2347 gcc_cv_nm=./nm$build_exeext
2348 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2349 gcc_cv_nm="$NM_FOR_TARGET"
2351 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2354 AC_MSG_CHECKING(what nm to use)
2355 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2356 # Single tree build which includes binutils.
2357 AC_MSG_RESULT(newly built nm)
2360 AC_MSG_RESULT($gcc_cv_nm)
2364 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2365 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2366 case "$ORIGINAL_NM_FOR_TARGET" in
2367 ./nm | ./nm$build_exeext) ;;
2368 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2372 # Figure out what objdump we will be using.
2373 AS_VAR_SET_IF(gcc_cv_objdump,, [
2374 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2375 && test -f ../binutils/Makefile \
2376 && test x$build = x$host; then
2377 # Single tree build which includes binutils.
2378 gcc_cv_objdump=../binutils/objdump$build_exeext
2379 elif test -x objdump$build_exeext; then
2380 gcc_cv_objdump=./objdump$build_exeext
2381 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2382 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2384 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2387 AC_MSG_CHECKING(what objdump to use)
2388 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2389 # Single tree build which includes binutils.
2390 AC_MSG_RESULT(newly built objdump)
2391 elif test x$gcc_cv_objdump = x; then
2392 AC_MSG_RESULT(not found)
2394 AC_MSG_RESULT($gcc_cv_objdump)
2397 # Figure out what readelf we will be using.
2398 AS_VAR_SET_IF(gcc_cv_readelf,, [
2399 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2400 && test -f ../binutils/Makefile \
2401 && test x$build = x$host; then
2402 # Single tree build which includes binutils.
2403 gcc_cv_readelf=../binutils/readelf$build_exeext
2404 elif test -x readelf$build_exeext; then
2405 gcc_cv_readelf=./readelf$build_exeext
2406 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2407 gcc_cv_readelf="$READELF_FOR_TARGET"
2409 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2412 AC_MSG_CHECKING(what readelf to use)
2413 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2414 # Single tree build which includes binutils.
2415 AC_MSG_RESULT(newly built readelf)
2416 elif test x$gcc_cv_readelf = x; then
2417 AC_MSG_RESULT(not found)
2419 AC_MSG_RESULT($gcc_cv_readelf)
2422 # Figure out what assembler alignment features are present.
2423 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2427 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2428 [Define if your assembler supports .balign and .p2align.])])
2430 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2433 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2434 [Define if your assembler supports specifying the maximum number
2435 of bytes to skip when using the GAS .p2align command.])])
2437 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2440 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2441 [Define if your assembler supports .literal16.])])
2443 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2445 [conftest_label1: .word 0
2447 conftest_label2: .word 0
2449 [if test x$gcc_cv_nm != x; then
2450 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2451 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2452 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2454 else gcc_cv_as_subsection_m1=yes
2456 rm -f conftest.nm1 conftest.nm2
2458 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2459 [Define if your assembler supports .subsection and .subsection -1 starts
2460 emitting at the beginning of your section.])])
2462 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2465 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2467 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2469 [ .weakref foobar, barfnot],,
2470 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2472 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2475 .NSUBSPA $CODE$,COMDAT],,
2476 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2478 # .hidden needs to be supported in both the assembler and the linker,
2479 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2480 # This is irritatingly difficult to feature test for; we have to check the
2481 # date string after the version number. If we've got an in-tree
2482 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2484 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2485 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2491 # Darwin as has some visibility support, though with a different syntax.
2492 gcc_cv_as_hidden=yes
2496 # gnu_indirect_function type is an extension proposed at
2497 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2498 # selection of function implementation
2499 AC_ARG_ENABLE(gnu-indirect-function,
2500 [AS_HELP_STRING([--enable-gnu-indirect-function],
2501 [enable the use of the @gnu_indirect_function to glibc systems])],
2502 [case $enable_gnu_indirect_function in
2504 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2505 Valid choices are 'yes' and 'no'.]) ;;
2507 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2509 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2510 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2511 [Define if your system supports gnu indirect functions.])
2515 if test $in_tree_ld != yes ; then
2516 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2517 if echo "$ld_ver" | grep GNU > /dev/null; then
2518 if test x"$ld_is_gold" = xyes; then
2519 # GNU gold --version looks like this:
2521 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2523 # We extract the binutils version which is more familiar and specific
2524 # than the gold version.
2525 ld_vers=`echo $ld_ver | sed -n \
2526 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2528 # GNU ld --version looks like this:
2530 # GNU ld (GNU Binutils) 2.21.51.20110225
2531 ld_vers=`echo $ld_ver | sed -n \
2532 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2534 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2535 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2536 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2537 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2541 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2544 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2545 # /usr/ccs/bin/ld has been configured.
2546 ld_ver=`$gcc_cv_ld -V 2>&1`
2547 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2548 ld_vers=`echo $ld_ver | sed -n \
2549 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2550 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2551 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2559 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2560 [[if test $in_tree_ld = yes ; then
2562 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2563 && test $in_tree_ld_is_elf = yes; then
2564 gcc_cv_ld_hidden=yes
2567 gcc_cv_ld_hidden=yes
2568 if test x"$ld_is_gold" = xyes; then
2570 elif echo "$ld_ver" | grep GNU > /dev/null; then
2572 mmix-knuth-mmixware)
2573 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2577 if test 0"$ld_date" -lt 20020404; then
2578 if test -n "$ld_date"; then
2579 # If there was date string, but was earlier than 2002-04-04, fail
2581 elif test -z "$ld_vers"; then
2582 # If there was no date string nor ld version number, something is wrong
2585 test -z "$ld_vers_patch" && ld_vers_patch=0
2586 if test "$ld_vers_major" -lt 2; then
2588 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2589 gcc_cv_ld_hidden="no"
2590 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2598 # Darwin ld has some visibility support.
2599 gcc_cv_ld_hidden=yes
2601 hppa64*-*-hpux* | ia64*-*-hpux*)
2602 gcc_cv_ld_hidden=yes
2604 *-*-solaris2.1[0-9]*)
2605 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2606 # .symbolic was only added in Solaris 9 12/02.
2607 gcc_cv_ld_hidden=yes
2615 libgcc_visibility=no
2616 AC_SUBST(libgcc_visibility)
2617 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2618 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2619 libgcc_visibility=yes
2620 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2621 [Define if your assembler and linker support .hidden.])
2624 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2625 gcc_cv_ld_ro_rw_mix=unknown
2626 if test $in_tree_ld = yes ; then
2627 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2628 && test $in_tree_ld_is_elf = yes; then
2629 gcc_cv_ld_ro_rw_mix=read-write
2631 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2632 echo '.section myfoosect, "a"' > conftest1.s
2633 echo '.section myfoosect, "aw"' > conftest2.s
2634 echo '.byte 1' >> conftest2.s
2635 echo '.section myfoosect, "a"' > conftest3.s
2636 echo '.byte 0' >> conftest3.s
2637 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2638 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2639 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2640 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2641 conftest2.o conftest3.o > /dev/null 2>&1; then
2642 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2643 | sed -e '/myfoosect/!d' -e N`
2644 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2645 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2646 gcc_cv_ld_ro_rw_mix=read-only
2648 gcc_cv_ld_ro_rw_mix=read-write
2653 rm -f conftest.* conftest[123].*
2656 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2657 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2658 [Define if your linker links a mix of read-only
2659 and read-write sections into a read-write section.])
2661 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2663 gcc_AC_INITFINI_ARRAY
2665 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2666 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2674 [[# GAS versions before 2.11 do not support uleb128,
2675 # despite appearing to.
2676 # ??? There exists an elf-specific test that will crash
2677 # the assembler. Perhaps it's better to figure out whether
2678 # arbitrary sections are supported and try the test.
2679 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2680 if echo "$as_ver" | grep GNU > /dev/null; then
2681 as_vers=`echo $as_ver | sed -n \
2682 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2683 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2684 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2685 if test $as_major -eq 2 && test $as_minor -lt 11
2687 else gcc_cv_as_leb128=yes
2690 [AC_DEFINE(HAVE_AS_LEB128, 1,
2691 [Define if your assembler supports .sleb128 and .uleb128.])])
2693 # Check if we have assembler support for unwind directives.
2694 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2701 .cfi_escape 1, 2, 3, 4, 5
2705 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2706 # read-only and read-write sections, we need to make sure that the
2707 # assembler used emits read-write .eh_frame sections.
2708 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2709 if test "x$gcc_cv_objdump" != x; then
2710 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2711 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2712 gcc_cv_as_cfi_directive=no
2715 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2716 # On Solaris/x86, make sure that GCC and assembler agree on using
2717 # read-only .eh_frame sections for 64-bit.
2718 if test x$gas = xyes; then
2719 as_ix86_64_opt="--64"
2721 as_ix86_64_opt="-xarch=amd64"
2723 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2724 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2725 sed -e /.eh_frame/!d -e N | \
2726 grep READONLY > /dev/null; then
2727 gcc_cv_as_cfi_directive=yes
2729 gcc_cv_as_cfi_directive=no
2733 gcc_cv_as_cfi_directive=yes
2738 # no objdump, err on the side of caution
2739 gcc_cv_as_cfi_directive=no
2742 gcc_cv_as_cfi_directive=yes
2746 gcc_cv_as_cfi_directive=yes
2749 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2750 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2754 .cfi_adjust_cfa_offset 64
2756 .cfi_adjust_cfa_offset 128
2759 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2760 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2761 gcc_cv_as_cfi_advance_working=yes
2765 # no objdump, err on the side of caution
2766 gcc_cv_as_cfi_advance_working=no
2768 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2769 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2770 [`if test $gcc_cv_as_cfi_directive = yes \
2771 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2772 [Define 0/1 if your assembler supports CFI directives.])
2774 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2775 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2776 gcc_cv_as_cfi_personality_directive, ,,
2779 .cfi_personality 0, symbol
2781 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2782 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2783 then echo 1; else echo 0; fi`],
2784 [Define 0/1 if your assembler supports .cfi_personality.])
2786 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2787 gcc_cv_as_cfi_sections_directive, ,,
2789 .cfi_sections .debug_frame, .eh_frame
2793 win32 | pe | cygwin* | mingw32*)
2794 # Need to check that we generated the correct relocation for the
2795 # .debug_frame section. This was fixed for binutils 2.21.
2796 gcc_cv_as_cfi_sections_directive=no
2797 if test "x$gcc_cv_objdump" != x; then
2798 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2799 grep secrel > /dev/null; then
2800 gcc_cv_as_cfi_sections_directive=yes
2805 gcc_cv_as_cfi_sections_directive=yes
2808 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2809 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2810 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2811 then echo 1; else echo 0; fi`],
2812 [Define 0/1 if your assembler supports .cfi_sections.])
2814 # GAS versions up to and including 2.11.0 may mis-optimize
2816 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2824 .section .eh_frame,"aw",@progbits
2826 .4byte .LECIE1-.LSCIE1
2840 .4byte .LEFDE1-.LASFDE1
2842 .4byte .LASFDE1-__FRAME_BEGIN__
2850 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2851 cat > conftest.lit <<EOF
2852 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2853 0010 01000000 12000000 18000000 00000000 ................
2854 0020 08000000 04080000 0044 .........D @&t@
2856 cat > conftest.big <<EOF
2857 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2858 0010 00000001 00000012 00000018 00000000 ................
2859 0020 00000008 04000000 0844 .........D @&t@
2861 # If the assembler didn't choke, and we can objdump,
2862 # and we got the correct data, then succeed.
2863 # The text in the here-document typically retains its unix-style line
2864 # endings, while the output of objdump will use host line endings.
2865 # Therefore, use diff -b for the comparisons.
2866 if test x$gcc_cv_objdump != x \
2867 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2868 | tail -3 > conftest.got \
2869 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2870 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2872 gcc_cv_as_eh_frame=yes
2873 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2874 gcc_cv_as_eh_frame=buggy
2876 # Uh oh, what do we do now?
2877 gcc_cv_as_eh_frame=no
2880 if test $gcc_cv_as_eh_frame = buggy; then
2881 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2882 [Define if your assembler mis-optimizes .eh_frame data.])
2885 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2886 [elf,2,12,0], [--fatal-warnings],
2887 [.section .rodata.str, "aMS", @progbits, 1])
2888 if test $gcc_cv_as_shf_merge = no; then
2889 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2890 [elf,2,12,0], [--fatal-warnings],
2891 [.section .rodata.str, "aMS", %progbits, 1])
2893 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2894 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2895 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2897 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2898 gcc_cv_as_comdat_group,
2899 [elf,2,16,0], [--fatal-warnings],
2900 [.section .text,"axG",@progbits,.foo,comdat])
2901 if test $gcc_cv_as_comdat_group = yes; then
2902 gcc_cv_as_comdat_group_percent=no
2903 gcc_cv_as_comdat_group_group=no
2905 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2906 gcc_cv_as_comdat_group_percent,
2907 [elf,2,16,0], [--fatal-warnings],
2908 [.section .text,"axG",%progbits,.foo,comdat])
2909 if test $gcc_cv_as_comdat_group_percent = yes; then
2910 gcc_cv_as_comdat_group_group=no
2913 # Sun as uses a completely different syntax.
2918 .group foo,".text%foo",#comdat
2919 .section ".text%foo", #alloc,#execinstr,#progbits
2924 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2926 .group foo,.text%foo,#comdat
2927 .section .text%foo, "ax", @progbits
2933 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2934 gcc_cv_as_comdat_group_group,
2938 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2939 gcc_cv_as_comdat_group_group=no
2943 if test x"$ld_is_gold" = xyes; then
2945 elif test $in_tree_ld = yes ; then
2947 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2948 && test $in_tree_ld_is_elf = yes; then
2951 elif echo "$ld_ver" | grep GNU > /dev/null; then
2953 if test 0"$ld_date" -lt 20050308; then
2954 if test -n "$ld_date"; then
2955 # If there was date string, but was earlier than 2005-03-08, fail
2957 elif test "$ld_vers_major" -lt 2; then
2959 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2966 *-*-solaris2.1[1-9]*)
2968 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2969 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2972 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2973 # least ld version 1.2267.
2974 if test "$ld_vers_major" -gt 1; then
2976 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2978 elif test "$ld_vers_minor" -ge 2267; then
2983 # Assume linkers other than GNU ld don't support COMDAT group.
2989 # Allow overriding the automatic COMDAT group tests above.
2990 AC_ARG_ENABLE(comdat,
2991 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2992 [comdat_group="$enable_comdat"])
2993 if test $comdat_group = no; then
2994 gcc_cv_as_comdat_group=no
2995 gcc_cv_as_comdat_group_percent=no
2996 gcc_cv_as_comdat_group_group=no
2998 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2999 [`if test $gcc_cv_as_comdat_group = yes \
3000 || test $gcc_cv_as_comdat_group_percent = yes \
3001 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3002 [Define 0/1 if your assembler and linker support COMDAT groups.])
3004 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3005 gcc_cv_as_discriminator,
3009 .loc 1 1 0 discriminator 1],,
3010 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3011 [Define if your assembler supports the .loc discriminator sub-directive.])])
3013 # Thread-local storage - the check is heavily parameterized.
3022 .section ".tdata","awT",@progbits
3025 ldq $27,__tls_get_addr($29) !literal!1
3026 lda $16,foo($29) !tlsgd!1
3027 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3028 ldq $27,__tls_get_addr($29) !literal!2
3029 lda $16,foo($29) !tlsldm!2
3030 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3031 ldq $1,foo($29) !gotdtprel
3032 ldah $2,foo($29) !dtprelhi
3033 lda $3,foo($2) !dtprello
3034 lda $4,foo($29) !dtprel
3035 ldq $1,foo($29) !gottprel
3036 ldah $2,foo($29) !tprelhi
3037 lda $3,foo($2) !tprello
3038 lda $4,foo($29) !tprel'
3041 tls_as_opt=--fatal-warnings
3043 cris-*-*|crisv32-*-*)
3045 .section ".tdata","awT",@progbits
3052 tls_as_opt=--fatal-warnings
3056 .section ".tdata","awT",@progbits
3068 .section ".tdata","awT",@progbits
3072 addil LT%foo-$tls_gdidx$,gp
3073 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3076 addil LT%foo-$tls_ldidx$,gp
3078 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3079 addil LR%foo-$tls_dtpoff$,%ret0
3080 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3082 addil LT%foo-$tls_ieoff$,gp
3083 ldw RT%foo-$tls_ieoff$(%r1),%t2
3086 addil LR%foo-$tls_leoff$,%t1
3087 ldo RR%foo-$tls_leoff$(%r1),%t2'
3090 tls_as_opt=--fatal-warnings
3094 .section ".tdata","awT",%progbits
3105 i[34567]86-*-* | x86_64-*-*)
3107 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3114 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3116 .section .tdata,"awt",@progbits'
3121 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3122 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3126 .section ".tdata","awT",@progbits'
3130 tls_as_opt="--fatal-warnings"
3134 conftest_s="$conftest_s
3138 leal foo@tlsgd(,%ebx,1), %eax
3139 leal foo@tlsldm(%ebx), %eax
3140 leal foo@dtpoff(%eax), %edx
3141 movl foo@gottpoff(%ebx), %eax
3142 subl foo@gottpoff(%ebx), %eax
3143 addl foo@gotntpoff(%ebx), %eax
3144 movl foo@indntpoff, %eax
3145 movl \$foo@tpoff, %eax
3146 subl \$foo@tpoff, %eax
3147 leal foo@ntpoff(%ecx), %eax"
3150 if test x$on_solaris = xyes; then
3152 yes) tls_as_opt="$tls_as_opt --64" ;;
3153 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3156 conftest_s="$conftest_s
3160 leaq foo@tlsgd(%rip), %rdi
3161 leaq foo@tlsld(%rip), %rdi
3162 leaq foo@dtpoff(%rax), %rdx
3163 movq foo@gottpoff(%rip), %rax
3164 movq \$foo@tpoff, %rax"
3170 .section ".tdata","awT",@progbits
3173 addl r16 = @ltoff(@dtpmod(foo#)), gp
3174 addl r17 = @ltoff(@dtprel(foo#)), gp
3175 addl r18 = @ltoff(@tprel(foo#)), gp
3176 addl r19 = @dtprel(foo#), gp
3177 adds r21 = @dtprel(foo#), r13
3178 movl r23 = @dtprel(foo#)
3179 addl r20 = @tprel(foo#), gp
3180 adds r22 = @tprel(foo#), r13
3181 movl r24 = @tprel(foo#)'
3184 tls_as_opt=--fatal-warnings
3188 .section .tdata,"awT",@progbits
3192 addik r5,r20,x@TLSGD
3193 addik r5,r20,x@TLSLDM'
3196 tls_as_opt='--fatal-warnings'
3200 .section .tdata,"awT",@progbits
3204 addiu $4, $28, %tlsgd(x)
3205 addiu $4, $28, %tlsldm(x)
3206 lui $4, %dtprel_hi(x)
3207 addiu $4, $4, %dtprel_lo(x)
3208 lw $4, %gottprel(x)($28)
3209 lui $4, %tprel_hi(x)
3210 addiu $4, $4, %tprel_lo(x)'
3213 tls_as_opt='-32 --fatal-warnings'
3217 .section .tdata,"awT",@progbits
3222 move.l x@TLSGD(%a5),%a0
3223 move.l x@TLSLDM(%a5),%a0
3224 move.l x@TLSLDO(%a5),%a0
3225 move.l x@TLSIE(%a5),%a0
3226 move.l x@TLSLE(%a5),%a0'
3229 tls_as_opt='--fatal-warnings'
3233 .section ".tdata","awT",@progbits'
3236 tls_as_opt="--fatal-warnings"
3240 .section ".tdata","awT",%progbits
3244 add x0, x0, #:tlsgd_lo12:x
3249 tls_as_opt='--fatal-warnings'
3253 .extern __get_tpointer
3271 .section ".tdata","awT",@progbits
3279 addi 3,2,ld0@got@tlsgd
3285 addi 3,2,x1@got@tlsld
3291 addis 9,3,x2@dtprel@ha
3292 addi 9,9,x2@dtprel@l
3295 ld 9,x3@got@dtprel(2)
3301 tls_as_opt="-a64 --fatal-warnings"
3305 .section ".tdata","awT",@progbits
3313 addi 3,31,ld0@got@tlsgd
3315 addi 3,31,x1@got@tlsld
3318 addis 9,3,x2@dtprel@ha
3319 addi 9,9,x2@dtprel@l
3320 lwz 9,x3@got@tprel(31)
3323 addis 9,2,x2@tprel@ha
3324 addi 9,9,x2@tprel@l'
3327 tls_as_opt="-a32 --fatal-warnings"
3331 .section ".tdata","awT",@progbits
3340 l %r1,foo@GOTNTPOFF(%r12)
3341 l %r1,0(%r1):tls_load:foo
3342 bas %r14,0(%r1,%r13):tls_gdcall:foo
3343 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3346 tls_as_opt="-m31 --fatal-warnings"
3350 .section ".tdata","awT",@progbits
3358 lg %r1,foo@GOTNTPOFF(%r12)
3359 larl %r1,foo@INDNTPOFF
3360 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3361 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3364 tls_as_opt="-m64 -Aesame --fatal-warnings"
3366 sh-*-* | sh[123456789lbe]*-*-*)
3368 .section ".tdata","awT",@progbits
3378 tls_as_opt=--fatal-warnings
3382 sparc*-sun-solaris2.*)
3389 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3391 .section ".tdata",#alloc,#write,#tls'
3396 .section ".tdata","awT",@progbits'
3399 tls_as_opt="-32 --fatal-warnings"
3401 conftest_s="$conftest_s
3404 sethi %tgd_hi22(foo), %o0
3405 add %o0, %tgd_lo10(foo), %o1
3406 add %l7, %o1, %o0, %tgd_add(foo)
3407 call __tls_get_addr, %tgd_call(foo)
3408 sethi %tldm_hi22(foo), %l1
3409 add %l1, %tldm_lo10(foo), %l2
3410 add %l7, %l2, %o0, %tldm_add(foo)
3411 call __tls_get_addr, %tldm_call(foo)
3412 sethi %tldo_hix22(foo), %l3
3413 xor %l3, %tldo_lox10(foo), %l4
3414 add %o0, %l4, %l5, %tldo_add(foo)
3415 sethi %tie_hi22(foo), %o3
3416 add %o3, %tie_lo10(foo), %o3
3417 ld [%l7 + %o3], %o2, %tie_ld(foo)
3418 add %g7, %o2, %o4, %tie_add(foo)
3419 sethi %tle_hix22(foo), %l1
3420 xor %l1, %tle_lox10(foo), %o5
3421 ld [%g7 + %o5], %o1"
3425 .section ".tdata","awT",@progbits
3428 addli r0, zero, tls_gd(foo)
3429 auli r0, zero, tls_gd_ha16(foo)
3430 addli r0, r0, tls_gd_lo16(foo)
3432 addli r0, zero, tls_ie(foo)
3433 auli r0, r0, tls_ie_ha16(foo)
3434 addli r0, r0, tls_ie_lo16(foo)'
3437 tls_as_opt="--fatal-warnings"
3441 .section ".tdata","awT",@progbits
3444 shl16insli r0, zero, hw0_last_tls_gd(foo)
3445 shl16insli r0, zero, hw1_last_tls_gd(foo)
3446 shl16insli r0, r0, hw0_tls_gd(foo)
3448 shl16insli r0, zero, hw1_last_tls_ie(foo)
3449 shl16insli r0, r0, hw0_tls_ie(foo)'
3452 tls_as_opt="--fatal-warnings"
3456 .section ".tdata","awT",@progbits
3459 movi a8, foo@TLSFUNC
3460 movi a10, foo@TLSARG
3461 callx8.tls a8, foo@TLSCALL'
3468 if test "x$enable_tls" = xno ; then
3469 : # TLS explicitly disabled.
3470 elif test "x$enable_tls" = xyes ; then
3471 set_have_as_tls=yes # TLS explicitly enabled.
3472 elif test -z "$tls_first_major"; then
3473 : # If we don't have a check, assume no support.
3475 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3476 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3477 [set_have_as_tls=yes])
3479 if test $set_have_as_tls = yes ; then
3480 AC_DEFINE(HAVE_AS_TLS, 1,
3481 [Define if your assembler and linker support thread-local storage.])
3484 # Target-specific assembler checks.
3486 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3487 gcc_cv_ld_static_dynamic=no
3488 gcc_cv_ld_static_option='-Bstatic'
3489 gcc_cv_ld_dynamic_option='-Bdynamic'
3490 if test $in_tree_ld = yes ; then
3491 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3492 gcc_cv_ld_static_dynamic=yes
3494 elif test x$gcc_cv_ld != x; then
3495 # Check if linker supports -Bstatic/-Bdynamic option
3496 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3497 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3498 gcc_cv_ld_static_dynamic=yes
3501 # AIX ld uses -b flags
3502 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3503 gcc_cv_ld_static_dynamic=yes
3504 gcc_cv_ld_static_option="-bstatic"
3505 gcc_cv_ld_dynamic_option="-bdynamic"
3507 # HP-UX ld uses -a flags to select between shared and archive.
3509 if test x"$gnu_ld" = xno; then
3510 gcc_cv_ld_static_dynamic=yes
3511 gcc_cv_ld_static_option="-aarchive_shared"
3512 gcc_cv_ld_dynamic_option="-adefault"
3515 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3517 gcc_cv_ld_static_dynamic=yes
3522 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3523 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3524 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3525 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3526 [Define to the linker option to disable use of shared objects.])
3527 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3528 [Define to the linker option to enable use of shared objects.])
3530 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3532 if test x"$demangler_in_ld" = xyes; then
3533 AC_MSG_CHECKING(linker --demangle support)
3534 gcc_cv_ld_demangle=no
3535 if test $in_tree_ld = yes; then
3536 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3537 gcc_cv_ld_demangle=yes
3539 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3540 # Check if the GNU linker supports --demangle option
3541 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3542 gcc_cv_ld_demangle=yes
3545 if test x"$gcc_cv_ld_demangle" = xyes; then
3546 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3547 [Define if your linker supports --demangle option.])
3549 AC_MSG_RESULT($gcc_cv_ld_demangle)
3552 AC_MSG_CHECKING(linker plugin support)
3554 if test -f liblto_plugin.la; then
3555 save_ld_ver="$ld_ver"
3556 save_ld_vers_major="$ld_vers_major"
3557 save_ld_vers_minor="$ld_vers_minor"
3558 save_ld_is_gold="$ld_is_gold"
3562 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3564 # FIXME: ld_is_gold?
3565 ld_vers_major="$gcc_cv_gld_major_version"
3566 ld_vers_minor="$gcc_cv_gld_minor_version"
3568 # Determine plugin linker version.
3569 # FIXME: Partial duplicate from above, generalize.
3571 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3572 if echo "$ld_ver" | grep GNU > /dev/null; then
3573 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3575 ld_vers=`echo $ld_ver | sed -n \
3576 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3578 ld_vers=`echo $ld_ver | sed -n \
3579 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3581 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3582 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3587 # Determine plugin support.
3588 if echo "$ld_ver" | grep GNU > /dev/null; then
3589 # Require GNU ld or gold 2.21+ for plugin support by default.
3590 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3592 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3593 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3598 ld_ver="$save_ld_ver"
3599 ld_vers_major="$save_ld_vers_major"
3600 ld_vers_minor="$save_ld_vers_minor"
3601 ld_is_gold="$save_ld_is_gold"
3603 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3604 [Define to the level of your linker's plugin support.])
3605 AC_MSG_RESULT($gcc_cv_lto_plugin)
3609 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3610 [-mabi=lp64], [.text],,,)
3611 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3612 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3613 [Define if your assembler supports the -mabi option.])
3615 if test x$with_abi = xilp32; then
3616 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3617 Upgrade the Assembler.])
3619 if test x"$with_multilib_list" = xdefault; then
3620 TM_MULTILIB_CONFIG=lp64
3622 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3623 for aarch64_multilib in ${aarch64_multilibs}; do
3624 case ${aarch64_multilib} in
3626 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3627 Upgrade the Assembler.])
3635 # Check if we have binutils support for relocations types needed by -fpic
3636 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3639 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3640 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3641 [Define if your assembler supports relocs needed by -fpic.])])
3642 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3643 AC_ARG_ENABLE(fix-cortex-a53-835769,
3645 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3646 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3647 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3648 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3653 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3658 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3659 Valid choices are 'yes' and 'no'.])
3665 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3666 AC_ARG_ENABLE(fix-cortex-a53-843419,
3668 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3669 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3670 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3671 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3676 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3681 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3682 Valid choices are 'yes' and 'no'.])
3690 # All TARGET_ABI_OSF targets.
3691 alpha*-*-linux* | alpha*-*-*bsd*)
3692 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3693 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3696 extbl $3, $2, $3 !lituse_bytoff!1
3697 ldq $2, a($29) !literal!1
3698 ldq $4, b($29) !literal!2
3699 ldq_u $3, 0($2) !lituse_base!1
3700 ldq $27, f($29) !literal!5
3701 jsr $26, ($27), f !lituse_jsr!5
3702 ldah $29, 0($26) !gpdisp!3
3703 lda $0, c($29) !gprel
3704 ldah $1, d($29) !gprelhigh
3705 lda $1, d($1) !gprellow
3706 lda $29, 0($29) !gpdisp!3],,
3707 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3708 [Define if your assembler supports explicit relocations.])])
3709 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3710 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3713 ldq $27, a($29) !literal!1
3714 jsr $26, ($27), a !lituse_jsrdirect!1],,
3715 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3716 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3720 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3721 [--mlink-relax], [.text],,
3722 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3723 [Define if your avr assembler supports --mlink-relax option.])])
3725 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3727 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3728 [Define if your avr assembler supports -mrmw option.])])
3732 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3733 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3734 [-no-mul-bug-abort], [.text],,
3735 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3736 [Define if your assembler supports the -no-mul-bug-abort option.])])
3740 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3741 [.register %g2, #scratch],,
3742 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3743 [Define if your assembler supports .register.])])
3745 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3746 [.section "nobits",#alloc,#write,#nobits
3747 .section "progbits",#alloc,#write,#progbits])
3748 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3749 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3750 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3752 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3754 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3755 [Define if your assembler supports -relax option.])])
3757 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3758 gcc_cv_as_sparc_gotdata_op,,
3765 sethi %gdop_hix22(foo), %g1
3766 xor %g1, %gdop_lox10(foo), %g1
3767 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3768 [if test x$gcc_cv_ld != x \
3769 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3770 if test x$gcc_cv_objdump != x; then
3771 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3772 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3773 gcc_cv_as_sparc_gotdata_op=no
3775 gcc_cv_as_sparc_gotdata_op=yes
3780 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3781 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3783 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3784 gcc_cv_as_sparc_ua_pcrel,,
3792 .uaword %r_disp32(foo)],
3793 [if test x$gcc_cv_ld != x \
3794 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3795 gcc_cv_as_sparc_ua_pcrel=yes
3798 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3799 [Define if your assembler and linker support unaligned PC relative relocs.])
3801 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3802 gcc_cv_as_sparc_ua_pcrel_hidden,,
3807 .uaword %r_disp32(foo)
3808 .byte 0x32, 0x33, 0x34
3813 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3814 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3815 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3816 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3817 if $gcc_cv_objdump -R conftest 2> /dev/null \
3818 | grep 'DISP32' > /dev/null 2>&1; then
3821 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3825 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3826 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3827 ]) # unaligned pcrel relocs
3829 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3830 gcc_cv_as_sparc_offsetable_lo10,,
3833 or %g1, %lo(ab) + 12, %g1
3834 or %g1, %lo(ab + 12), %g1],
3835 [if test x$gcc_cv_objdump != x \
3836 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3837 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3838 gcc_cv_as_sparc_offsetable_lo10=yes
3840 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3841 [Define if your assembler supports offsetable %lo().])])
3843 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3844 gcc_cv_as_sparc_fmaf,,
3847 .register %g2, #scratch
3848 .register %g3, #scratch
3850 fmaddd %f0, %f2, %f4, %f6
3851 addxccc %g1, %g2, %g3
3852 fsrl32 %f2, %f4, %f8
3853 fnaddd %f10, %f12, %f14],,
3854 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3855 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3857 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3858 gcc_cv_as_sparc_sparc4,,
3861 .register %g2, #scratch
3862 .register %g3, #scratch
3865 1: cwbneg %g2, %g3, 1f
3868 aes_kexpand0 %f4, %f6, %f8
3869 des_round %f38, %f40, %f42, %f44
3870 camellia_f %f54, %f56, %f58, %f60
3871 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3872 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3873 [Define if your assembler supports SPARC4 instructions.])])
3875 gcc_GAS_CHECK_FEATURE([LEON instructions],
3876 gcc_cv_as_sparc_leon,,
3879 .register %g2, #scratch
3880 .register %g3, #scratch
3884 casa [[%g2]] 0xb, %g3, %g1],,
3885 [AC_DEFINE(HAVE_AS_LEON, 1,
3886 [Define if your assembler supports LEON instructions.])])
3890 i[34567]86-*-* | x86_64-*-*)
3894 # Full C++ conformance when using a shared libstdc++-v3 requires some
3895 # support from the Cygwin DLL, which in more recent versions exports
3896 # wrappers to aid in interposing and redirecting operators new, delete,
3897 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3898 # are configuring for a version of Cygwin that exports the wrappers.
3899 if test x$host = x$target && test x$host_cpu = xi686; then
3900 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3902 # Can't check presence of libc functions during cross-compile, so
3903 # we just have to assume we're building for an up-to-date target.
3904 gcc_ac_cygwin_dll_wrappers=yes
3906 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3907 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3908 [Define if you want to generate code by default that assumes that the
3909 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3912 cygwin* | pe | mingw32* | interix*)
3913 # Recent binutils allows the three-operand form of ".comm" on PE. This
3914 # definition is used unconditionally to initialise the default state of
3915 # the target option variable that governs usage of the feature.
3916 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3917 [2,19,52],,[.comm foo,1,32])
3918 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3919 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3920 [Define if your assembler supports specifying the alignment
3921 of objects allocated using the GAS .comm command.])
3922 # Used for DWARF 2 in PE
3923 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3924 gcc_cv_as_ix86_pe_secrel32,
3930 [if test x$gcc_cv_ld != x \
3931 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3932 gcc_cv_as_ix86_pe_secrel32=yes
3935 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3936 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3937 # Test if the assembler supports the extended form of the .section
3938 # directive that specifies section alignment. LTO support uses this,
3939 # but normally only after installation, so we warn but don't fail the
3940 # configure if LTO is enabled but the assembler does not support it.
3941 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3942 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3943 if test x$gcc_cv_as_section_has_align != xyes; then
3944 case ",$enable_languages," in
3946 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3953 # Test if the assembler supports the section flag 'e' for specifying
3954 # an excluded section.
3955 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3956 [2,22,51], [--fatal-warnings],
3959 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3960 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3961 [Define if your assembler supports specifying the section flag e.])
3963 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3964 gcc_cv_as_ix86_filds,,,
3965 [filds (%ebp); fists (%ebp)],,
3966 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3967 [Define if your assembler uses filds and fists mnemonics.])])
3969 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3970 gcc_cv_as_ix86_fildq,,,
3971 [fildq (%ebp); fistpq (%ebp)],,
3972 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3973 [Define if your assembler uses fildq and fistq mnemonics.])])
3975 gcc_GAS_CHECK_FEATURE([cmov syntax],
3976 gcc_cv_as_ix86_cmov_sun_syntax,,,
3977 [cmovl.l %edx, %eax],,
3978 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3979 [Define if your assembler supports the Sun syntax for cmov.])])
3981 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3982 gcc_cv_as_ix86_ffreep,,,
3984 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3985 [Define if your assembler supports the ffreep mnemonic.])])
3987 gcc_GAS_CHECK_FEATURE([.quad directive],
3988 gcc_cv_as_ix86_quad,,,
3990 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3991 [Define if your assembler supports the .quad directive.])])
3993 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3994 gcc_cv_as_ix86_sahf,,,
3997 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3998 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4000 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4001 gcc_cv_as_ix86_interunit_movq,,,
4005 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4006 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4007 [Define if your assembler supports interunit movq mnemonic.])
4009 gcc_GAS_CHECK_FEATURE([hle prefixes],
4010 gcc_cv_as_ix86_hle,,,
4011 [lock xacquire cmpxchg %esi, (%ecx)],,
4012 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4013 [Define if your assembler supports HLE prefixes.])])
4015 gcc_GAS_CHECK_FEATURE([swap suffix],
4016 gcc_cv_as_ix86_swap,,,
4017 [movl.s %esp, %ebp],,
4018 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4019 [Define if your assembler supports the swap suffix.])])
4021 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4022 gcc_cv_as_ix86_diff_sect_delta,,,
4030 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4031 [Define if your assembler supports the subtraction of symbols in different sections.])])
4033 # These two are used unconditionally by i386.[ch]; it is to be defined
4034 # to 1 if the feature is present, 0 otherwise.
4035 as_ix86_gotoff_in_data_opt=
4036 if test x$gas = xyes; then
4037 as_ix86_gotoff_in_data_opt="--32"
4039 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4040 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4041 [$as_ix86_gotoff_in_data_opt],
4047 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4048 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4049 [Define true if the assembler supports '.long foo@GOTOFF'.])
4051 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4052 gcc_cv_as_ix86_rep_lock_prefix,,,
4058 lock addl %edi, (%eax,%esi)
4059 lock orl $0, (%esp)],,
4060 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4061 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4063 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4064 gcc_cv_as_ix86_ud2,,,
4066 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4067 [Define if your assembler supports the 'ud2' mnemonic.])])
4069 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4070 gcc_cv_as_ix86_tlsgdplt,,,
4071 [call tls_gd@tlsgdplt],
4072 [if test x$gcc_cv_ld != x \
4073 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4074 gcc_cv_as_ix86_tlsgdplt=yes
4077 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4078 [Define if your assembler and linker support @tlsgdplt.])])
4081 .section .tdata,"aw'$tls_section_flag'",@progbits
4083 .section .text,"ax",@progbits
4084 call tls_ld@tlsldmplt'
4085 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4086 gcc_cv_as_ix86_tlsldmplt,,,
4088 [if test x$gcc_cv_ld != x \
4089 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4090 gcc_cv_as_ix86_tlsldmplt=yes
4093 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4094 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4095 [Define to 1 if your assembler and linker support @tlsldmplt.])
4097 # Enforce 32-bit output with gas and gld.
4098 if test x$gas = xyes; then
4099 as_ix86_tls_ldm_opt="--32"
4101 if echo "$ld_ver" | grep GNU > /dev/null; then
4102 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4103 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4105 ld_ix86_tls_ldm_opt="-melf_i386"
4109 .section .text,"ax",@progbits
4111 .type _start, @function
4113 leal value@tlsldm(%ebx), %eax
4114 call ___tls_get_addr@plt
4116 .section .tdata,"aw'$tls_section_flag'",@progbits
4117 .type value, @object
4119 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4120 gcc_cv_as_ix86_tlsldm,,
4121 [$as_ix86_tls_ldm_opt],
4123 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4124 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4125 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4126 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4127 gcc_cv_as_ix86_tlsldm=yes
4131 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4132 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4133 [Define to 1 if your assembler and linker support @tlsldm.])
4138 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4139 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4141 addl r15 = @ltoffx(x#), gp
4143 ld8.mov r16 = [[r15]], x#],,
4144 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4145 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4151 *-*-aix*) conftest_s=' .machine "pwr5"
4155 gcc_GAS_CHECK_FEATURE([.machine directive support],
4156 gcc_cv_as_machine_directive,,,
4157 [ .machine ppc7400])
4158 if test x$gcc_cv_as_machine_directive != xyes; then
4159 echo "*** This target requires an assembler supporting \".machine\"" >&2
4160 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4161 test x$build = x$target && exit 1
4165 *) conftest_s=' .machine power4
4170 gcc_GAS_CHECK_FEATURE([mfcr field support],
4171 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4173 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4174 [Define if your assembler supports mfcr field.])])
4177 *-*-aix*) conftest_s=' .machine "pwr5"
4180 *) conftest_s=' .machine power5
4185 gcc_GAS_CHECK_FEATURE([popcntb support],
4186 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4188 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4189 [Define if your assembler supports popcntb field.])])
4192 *-*-aix*) conftest_s=' .machine "pwr5x"
4195 *) conftest_s=' .machine power5
4200 gcc_GAS_CHECK_FEATURE([fp round support],
4201 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4203 [AC_DEFINE(HAVE_AS_FPRND, 1,
4204 [Define if your assembler supports fprnd.])])
4207 *-*-aix*) conftest_s=' .machine "pwr6"
4210 *) conftest_s=' .machine power6
4215 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4216 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4218 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4219 [Define if your assembler supports mffgpr and mftgpr.])])
4222 *-*-aix*) conftest_s=' .csect .text[[PR]]
4224 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4228 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4229 *) conftest_s=' .text
4231 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4234 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4235 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4237 [AC_DEFINE(HAVE_AS_REL16, 1,
4238 [Define if your assembler supports R_PPC_REL16 relocs.])])
4241 *-*-aix*) conftest_s=' .machine "pwr6"
4244 *) conftest_s=' .machine power6
4249 gcc_GAS_CHECK_FEATURE([compare bytes support],
4250 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4252 [AC_DEFINE(HAVE_AS_CMPB, 1,
4253 [Define if your assembler supports cmpb.])])
4256 *-*-aix*) conftest_s=' .machine "pwr6"
4259 *) conftest_s=' .machine power6
4264 gcc_GAS_CHECK_FEATURE([decimal float support],
4265 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4267 [AC_DEFINE(HAVE_AS_DFP, 1,
4268 [Define if your assembler supports DFP instructions.])])
4271 *-*-aix*) conftest_s=' .machine "pwr7"
4274 *) conftest_s=' .machine power7
4279 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4280 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4282 [AC_DEFINE(HAVE_AS_VSX, 1,
4283 [Define if your assembler supports VSX instructions.])])
4286 *-*-aix*) conftest_s=' .machine "pwr7"
4289 *) conftest_s=' .machine power7
4294 gcc_GAS_CHECK_FEATURE([popcntd support],
4295 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4297 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4298 [Define if your assembler supports POPCNTD instructions.])])
4301 *-*-aix*) conftest_s=' .machine "pwr8"
4302 .csect .text[[PR]]';;
4303 *) conftest_s=' .machine power8
4307 gcc_GAS_CHECK_FEATURE([power8 support],
4308 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4310 [AC_DEFINE(HAVE_AS_POWER8, 1,
4311 [Define if your assembler supports POWER8 instructions.])])
4314 *-*-aix*) conftest_s=' .csect .text[[PR]]
4316 *) conftest_s=' .text
4320 gcc_GAS_CHECK_FEATURE([lwsync support],
4321 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4323 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4324 [Define if your assembler supports LWSYNC instructions.])])
4327 *-*-aix*) conftest_s=' .machine "476"
4330 *) conftest_s=' .machine "476"
4335 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4336 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4338 [AC_DEFINE(HAVE_AS_DCI, 1,
4339 [Define if your assembler supports the DCI/ICI instructions.])])
4341 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4342 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4343 [.gnu_attribute 4,1],,
4344 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4345 [Define if your assembler supports .gnu_attribute.])])
4347 gcc_GAS_CHECK_FEATURE([tls marker support],
4348 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4349 [ bl __tls_get_addr(x@tlsgd)],,
4350 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4351 [Define if your assembler supports arg info for __tls_get_addr.])])
4355 gcc_GAS_CHECK_FEATURE([.ref support],
4356 gcc_cv_as_aix_ref, [2,21,0],,
4357 [ .csect stuff[[rw]]
4363 [AC_DEFINE(HAVE_AS_REF, 1,
4364 [Define if your assembler supports .ref])])
4370 gcc_GAS_CHECK_FEATURE([dwarf location lists section support],
4371 gcc_cv_as_aix_dwloc, [2,21,0],,
4374 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4375 [Define if your assembler supports .dwsect 0xB0000])])
4381 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4382 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4383 [ lw $4,%gp_rel(foo)($4)],,
4384 [if test x$target_cpu_default = x
4385 then target_cpu_default=MASK_EXPLICIT_RELOCS
4386 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4389 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4390 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4391 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4392 [Define if the assembler understands -mno-shared.])])
4394 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4395 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4396 [.gnu_attribute 4,1],,
4397 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4398 [Define if your assembler supports .gnu_attribute.])])
4400 gcc_GAS_CHECK_FEATURE([.module support],
4401 gcc_cv_as_mips_dot_module,,[-32],
4404 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4405 [Define if your assembler supports .module.])])
4406 if test x$gcc_cv_as_mips_dot_module = xno \
4407 && test x$with_fp_32 != x; then
4409 [Requesting --with-fp-32= requires assembler support for .module.])
4412 gcc_GAS_CHECK_FEATURE([.micromips support],
4413 gcc_cv_as_micromips_support,,[--fatal-warnings],
4415 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4416 [Define if your assembler supports the .set micromips directive])])
4418 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4419 gcc_cv_as_mips_dtprelword, [2,18,0],,
4420 [.section .tdata,"awT",@progbits
4424 .dtprelword x+0x8000],,
4425 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4426 [Define if your assembler supports .dtprelword.])])
4428 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4429 gcc_cv_as_mips_dspr1_mult,,,
4439 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4440 [Define if your assembler supports DSPR1 mult.])])
4442 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4443 gcc_cv_as_ld_jalr_reloc=no
4444 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4445 if test $in_tree_ld = yes ; then
4446 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4447 && test $in_tree_ld_is_elf = yes; then
4448 gcc_cv_as_ld_jalr_reloc=yes
4450 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4451 echo ' .ent x' > conftest.s
4452 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4453 echo ' lw $25,%call16(y)($28)' >> conftest.s
4454 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4455 echo '1: jalr $25' >> conftest.s
4456 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4457 echo '1: jalr $25' >> conftest.s
4458 echo ' .end x' >> conftest.s
4459 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4460 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4461 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4462 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4463 gcc_cv_as_ld_jalr_reloc=yes
4469 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4470 if test x$target_cpu_default = x; then
4471 target_cpu_default=MASK_RELAX_PIC_CALLS
4473 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4476 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4478 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4479 [gcc_cv_ld_mips_personality_relaxation],
4480 [gcc_cv_ld_mips_personality_relaxation=no
4481 if test $in_tree_ld = yes ; then
4482 if test "$gcc_cv_gld_major_version" -eq 2 \
4483 -a "$gcc_cv_gld_minor_version" -ge 21 \
4484 -o "$gcc_cv_gld_major_version" -gt 2; then
4485 gcc_cv_ld_mips_personality_relaxation=yes
4487 elif test x$gcc_cv_as != x \
4488 -a x$gcc_cv_ld != x \
4489 -a x$gcc_cv_readelf != x ; then
4490 cat > conftest.s <<EOF
4492 .cfi_personality 0x80,indirect_ptr
4499 .section .data,"aw",@progbits
4503 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4504 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4505 if $gcc_cv_readelf -d conftest 2>&1 \
4506 | grep TEXTREL > /dev/null 2>&1; then
4508 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4509 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4512 gcc_cv_ld_mips_personality_relaxation=yes
4516 rm -f conftest.s conftest.o conftest])
4517 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4518 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4519 [Define if your linker can relax absolute .eh_frame personality
4520 pointers into PC-relative form.])
4523 gcc_GAS_CHECK_FEATURE([-mnan= support],
4524 gcc_cv_as_mips_nan,,
4526 [AC_DEFINE(HAVE_AS_NAN, 1,
4527 [Define if the assembler understands -mnan=.])])
4528 if test x$gcc_cv_as_mips_nan = xno \
4529 && test x$with_nan != x; then
4531 [Requesting --with-nan= requires assembler support for -mnan=])
4535 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4536 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4537 [.gnu_attribute 8,1],,
4538 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4539 [Define if your assembler supports .gnu_attribute.])])
4543 # Mips and HP-UX need the GNU assembler.
4544 # Linux on IA64 might be able to use the Intel assembler.
4547 mips*-*-* | *-*-hpux* )
4548 if test x$gas_flag = xyes \
4549 || test x"$host" != x"$build" \
4550 || test ! -x "$gcc_cv_as" \
4551 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4554 echo "*** This configuration requires the GNU assembler" >&2
4560 # ??? Not all targets support dwarf2 debug_line, even within a version
4561 # of gas. Moreover, we need to emit a valid instruction to trigger any
4562 # info to the output file. So, as supported targets are added to gas 2.11,
4563 # add some instruction here to (also) show we expect this might work.
4564 # ??? Once 2.11 is released, probably need to add first known working
4565 # version to the per-target configury.
4567 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4568 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4569 | visium | xstormy16 | xtensa)
4579 if test x"$insn" != x; then
4581 .file 1 \"conftest.s\"
4584 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4585 gcc_cv_as_dwarf2_debug_line,
4586 [elf,2,11,0],, [$conftest_s],
4587 [if test x$gcc_cv_objdump != x \
4588 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4589 | grep debug_line > /dev/null 2>&1; then
4590 gcc_cv_as_dwarf2_debug_line=yes
4593 # The .debug_line file table must be in the exact order that
4594 # we specified the files, since these indices are also used
4595 # by DW_AT_decl_file. Approximate this test by testing if
4596 # the assembler bitches if the same index is assigned twice.
4597 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4598 gcc_cv_as_dwarf2_file_buggy,,,
4602 if test $gcc_cv_as_dwarf2_debug_line = yes \
4603 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4604 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4605 [Define if your assembler supports dwarf2 .file/.loc directives,
4606 and preserves file table indices exactly as given.])
4609 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4610 gcc_cv_as_gdwarf2_flag,
4611 [elf,2,11,0], [--gdwarf2], [$insn],,
4612 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4613 [Define if your assembler supports the --gdwarf2 option.])])
4615 gcc_GAS_CHECK_FEATURE([--gstabs option],
4616 gcc_cv_as_gstabs_flag,
4617 [elf,2,11,0], [--gstabs], [$insn],,
4618 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4619 [Define if your assembler supports the --gstabs option.])])
4621 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4622 gcc_cv_as_debug_prefix_map_flag,
4623 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4624 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4625 [Define if your assembler supports the --debug-prefix-map option.])])
4628 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4629 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4630 [# gas compiled without zlib cannot compress debug sections and warns
4631 # about it, but still exits successfully. So check for this, too.
4632 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4634 gcc_cv_as_compress_debug=0
4635 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4637 gcc_cv_as_compress_debug=1
4638 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4639 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4641 gcc_cv_as_compress_debug=0
4642 # FIXME: Future gas versions will support ELF gABI style via
4643 # --compress-debug-sections[=type].
4645 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4646 [Define to the level of your assembler's compressed debug section support.])
4647 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4648 [Define to the assembler option to enable compressed debug sections.])
4649 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4650 [Define to the assembler option to disable compressed debug sections.])
4652 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4655 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4656 [Define if your assembler supports .lcomm with an alignment field.])])
4658 if test x$with_sysroot = x && test x$host = x$target \
4659 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4660 && test "$prefix" != "NONE"; then
4661 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4662 [Define to PREFIX/include if cpp should also search that directory.])
4665 # Determine the version of glibc, if any, used on the target.
4666 AC_MSG_CHECKING([for target glibc version])
4667 AC_ARG_WITH([glibc-version],
4668 [AS_HELP_STRING([--with-glibc-version=M.N],
4669 [assume GCC used with glibc version M.N or later])], [
4670 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4671 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4672 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4674 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4676 glibc_version_major=0
4677 glibc_version_minor=0
4678 [if test -f $target_header_dir/features.h \
4679 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4680 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4681 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4682 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4684 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4685 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4686 [GNU C Library major version number used on the target, or 0.])
4687 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4688 [GNU C Library minor version number used on the target, or 0.])
4690 AC_ARG_ENABLE(gnu-unique-object,
4691 [AS_HELP_STRING([--enable-gnu-unique-object],
4692 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4693 [case $enable_gnu_unique_object in
4695 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4696 Valid choices are 'yes' and 'no'.]) ;;
4698 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4700 [.type foo, '$target_type_format_char'gnu_unique_object],,
4701 # We need to unquote above to to use the definition from config.gcc.
4702 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4703 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4705 if test x$enable_gnu_unique_object = xyes; then
4706 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4707 [Define if your assembler supports @gnu_unique_object.])
4710 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4711 [gcc_cv_as_line_zero],
4712 [gcc_cv_as_line_zero=no
4713 if test $in_tree_gas = yes; then
4714 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4715 elif test "x$gcc_cv_as" != x; then
4716 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4717 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4718 test "x`cat conftest.out`" = x
4720 gcc_cv_as_line_zero=yes
4722 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4723 cat conftest.s >&AS_MESSAGE_LOG_FD
4724 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4725 cat conftest.out >&AS_MESSAGE_LOG_FD
4727 rm -f conftest.o conftest.s conftest.out
4729 if test "x$gcc_cv_as_line_zero" = xyes; then
4730 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4731 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4734 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4735 gcc_cv_ld_eh_frame_hdr=no
4736 if test $in_tree_ld = yes ; then
4737 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4738 && test $in_tree_ld_is_elf = yes; then
4739 gcc_cv_ld_eh_frame_hdr=yes
4741 elif test x$gcc_cv_ld != x; then
4742 if echo "$ld_ver" | grep GNU > /dev/null; then
4743 # Check if linker supports --eh-frame-hdr option
4744 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4745 gcc_cv_ld_eh_frame_hdr=yes
4750 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4751 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4752 gcc_cv_ld_eh_frame_hdr=yes
4758 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4759 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4760 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4761 [Define if your linker supports .eh_frame_hdr.])
4763 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4765 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4766 gcc_cv_ld_eh_frame_ciev3=no
4767 if test $in_tree_ld = yes ; then
4768 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4769 && test $in_tree_ld_is_elf = yes; then
4770 gcc_cv_ld_eh_frame_ciev3=yes
4772 elif test x$gcc_cv_ld != x; then
4773 if echo "$ld_ver" | grep GNU > /dev/null; then
4774 gcc_cv_ld_eh_frame_ciev3=yes
4775 if test 0"$ld_date" -lt 20040513; then
4776 if test -n "$ld_date"; then
4777 # If there was date string, but was earlier than 2004-05-13, fail
4778 gcc_cv_ld_eh_frame_ciev3=no
4779 elif test "$ld_vers_major" -lt 2; then
4780 gcc_cv_ld_eh_frame_ciev3=no
4781 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4782 gcc_cv_ld_eh_frame_ciev3=no
4788 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4789 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4790 gcc_cv_ld_eh_frame_ciev3=yes
4796 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4797 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4798 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4799 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4801 AC_MSG_CHECKING(linker position independent executable support)
4803 if test $in_tree_ld = yes ; then
4805 # Full PIE support on Solaris was only introduced in gld 2.26.
4806 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4807 *) gcc_gld_pie_min_version=15 ;;
4809 if test "$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 \
4810 && test $in_tree_ld_is_elf = yes; then
4813 elif test x$gcc_cv_ld != x; then
4814 # Check if linker supports -pie option
4815 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4819 if echo "$ld_ver" | grep GNU > /dev/null \
4820 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4827 *-*-solaris2.1[[1-9]]*)
4828 # Solaris 11.x and Solaris 12 added PIE support.
4829 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4836 if test x"$gcc_cv_ld_pie" = xyes; then
4837 AC_DEFINE(HAVE_LD_PIE, 1,
4838 [Define if your linker supports PIE option.])
4840 AC_MSG_RESULT($gcc_cv_ld_pie)
4842 AC_MSG_CHECKING(linker PIE support with copy reloc)
4843 gcc_cv_ld_pie_copyreloc=no
4844 if test $gcc_cv_ld_pie = yes ; then
4845 if test $in_tree_ld = yes ; then
4846 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4847 gcc_cv_ld_pie_copyreloc=yes
4849 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4850 # Check if linker supports -pie option with copy reloc
4852 i?86-*-linux* | x86_64-*-linux*)
4853 cat > conftest1.s <<EOF
4856 .type a_glob, @object
4861 cat > conftest2.s <<EOF
4864 .type main, @function
4866 movl %eax, a_glob(%rip)
4869 .section .data.rel,"aw",@progbits
4874 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4875 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4876 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4877 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4878 gcc_cv_ld_pie_copyreloc=yes
4880 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4885 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4886 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4887 [Define 0/1 if your linker supports -pie option with copy reloc.])
4888 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4890 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4891 gcc_cv_ld_eh_gc_sections=no
4892 if test $in_tree_ld = yes ; then
4893 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4894 && test $in_tree_ld_is_elf = yes; then
4895 gcc_cv_ld_eh_gc_sections=yes
4897 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4898 cat > conftest.s <<EOF
4901 .type _start, @function
4904 .size _start, .-_start
4905 .section .text.foo,"ax",@progbits
4906 .type foo, @function
4910 .section .gcc_except_table.foo,"a",@progbits
4913 .section .eh_frame,"a",@progbits
4916 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4917 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4918 | grep "gc-sections option ignored" > /dev/null; then
4919 gcc_cv_ld_eh_gc_sections=no
4920 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4921 | grep gcc_except_table > /dev/null; then
4922 gcc_cv_ld_eh_gc_sections=yes
4923 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4924 if test x$gcc_cv_as_comdat_group != xyes; then
4925 gcc_cv_ld_eh_gc_sections=no
4926 cat > conftest.s <<EOF
4929 .type _start, @function
4932 .size _start, .-_start
4933 .section .gnu.linkonce.t.foo,"ax",@progbits
4934 .type foo, @function
4938 .section .gcc_except_table.foo,"a",@progbits
4941 .section .eh_frame,"a",@progbits
4944 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4945 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4946 | grep "gc-sections option ignored" > /dev/null; then
4947 gcc_cv_ld_eh_gc_sections=no
4948 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4949 | grep gcc_except_table > /dev/null; then
4950 gcc_cv_ld_eh_gc_sections=yes
4956 rm -f conftest.s conftest.o conftest
4960 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4961 gcc_cv_ld_eh_gc_sections=no
4964 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4965 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4966 [Define if your linker supports garbage collection of
4967 sections in presence of EH frames.])
4969 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4971 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4972 gcc_cv_ld_eh_gc_sections_bug=no
4973 if test $in_tree_ld = yes ; then
4974 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4975 && test $in_tree_ld_is_elf = yes; then
4976 gcc_cv_ld_eh_gc_sections_bug=yes
4978 elif test x$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
4979 gcc_cv_ld_eh_gc_sections_bug=yes
4980 cat > conftest.s <<EOF
4983 .type _start, @function
4986 .size _start, .-_start
4987 .section .text.startup.foo,"ax",@progbits
4988 .type foo, @function
4992 .section .gcc_except_table.foo,"a",@progbits
4995 .section .eh_frame,"a",@progbits
4998 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4999 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5000 | grep "gc-sections option ignored" > /dev/null; then
5002 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5003 | grep gcc_except_table > /dev/null; then
5004 gcc_cv_ld_eh_gc_sections_bug=no
5007 rm -f conftest.s conftest.o conftest
5009 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5010 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5011 [Define if your linker has buggy garbage collection of
5012 sections support when .text.startup.foo like sections are used.])
5014 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5016 AC_MSG_CHECKING(linker for compressed debug sections)
5017 # gold/gld support compressed debug sections since binutils 2.19/2.21
5018 if test $in_tree_ld = yes ; then
5019 gcc_cv_ld_compress_debug=0
5020 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5021 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5022 gcc_cv_ld_compress_debug=2
5023 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5024 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5025 && test $in_tree_ld_is_elf = yes; then
5026 gcc_cv_ld_compress_debug=1
5028 elif echo "$ld_ver" | grep GNU > /dev/null; then
5029 gcc_cv_ld_compress_debug=1
5030 if test 0"$ld_date" -lt 20050308; then
5031 if test -n "$ld_date"; then
5032 # If there was date string, but was earlier than 2005-03-08, fail
5033 gcc_cv_ld_compress_debug=0
5034 elif test "$ld_vers_major" -lt 2; then
5035 gcc_cv_ld_compress_debug=0
5036 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5037 gcc_cv_ld_compress_debug=0
5040 if test $ld_is_gold = yes; then
5041 gcc_cv_ld_compress_debug=2
5042 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5048 # Introduced in Solaris 11.2.
5049 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5050 gcc_cv_ld_compress_debug=3
5051 gcc_cv_ld_compress_debug_option="-z compress-sections"
5053 gcc_cv_ld_compress_debug=0
5057 # Assume linkers other than GNU ld don't support compessed debug
5059 gcc_cv_ld_compress_debug=0
5064 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5065 [Define to the level of your linker's compressed debug section support.])
5066 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5067 [Define to the linker option to enable compressed debug sections.])
5068 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5074 AC_CACHE_CHECK(linker --as-needed support,
5075 gcc_cv_ld_as_needed,
5076 [gcc_cv_ld_as_needed=no
5077 gcc_cv_ld_as_needed_option='--as-needed'
5078 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5079 if test $in_tree_ld = yes ; then
5080 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5081 && test $in_tree_ld_is_elf = yes; then
5082 gcc_cv_ld_as_needed=yes
5084 elif test x$gcc_cv_ld != x; then
5085 # Check if linker supports --as-needed and --no-as-needed options
5086 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5087 gcc_cv_ld_as_needed=yes
5090 # Solaris 2 ld always supports -z ignore/-z record.
5092 gcc_cv_ld_as_needed=yes
5093 gcc_cv_ld_as_needed_option="-z ignore"
5094 gcc_cv_ld_no_as_needed_option="-z record"
5099 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5100 # dl_iterate_phdr, i.e. since Solaris 11.
5102 *-*-solaris2.1[[1-9]]*)
5104 i?86-*-* | x86_64-*-*)
5105 if echo "$ld_ver" | grep GNU > /dev/null; then
5106 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5107 gcc_cv_ld_as_needed=no
5113 gcc_cv_ld_as_needed=no
5117 if test x"$gcc_cv_ld_as_needed" = xyes; then
5118 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5119 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5120 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5121 [Define to the linker option to ignore unused dependencies.])
5122 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5123 [Define to the linker option to keep unused dependencies.])
5126 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5127 saved_LDFLAGS="$LDFLAGS"
5128 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5129 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5130 AC_LINK_IFELSE([int main(void) {return 0;}],
5131 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5133 LDFLAGS="$saved_LDFLAGS"
5134 if test "x$gcc_cv_ld_clearcap" = xyes; then
5135 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5136 [Define if the linker supports clearing hardware capabilities via mapfile.])
5137 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5139 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5141 case "$target:$tm_file" in
5142 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5145 emul_name="-melf64lppc"
5148 emul_name="-melf64ppc"
5151 emul_name="-melf64ppc_fbsd"
5154 AC_CACHE_CHECK(linker support for omitting dot symbols,
5155 gcc_cv_ld_no_dot_syms,
5156 [gcc_cv_ld_no_dot_syms=no
5157 if test x"$ld_is_gold" = xyes; then
5158 gcc_cv_ld_no_dot_syms=yes
5159 elif test $in_tree_ld = yes ; then
5160 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5161 gcc_cv_ld_no_dot_syms=yes
5163 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5164 cat > conftest1.s <<EOF
5168 cat > conftest2.s <<EOF
5169 .section ".opd","aw"
5174 .quad .LEfoo,.TOC.@tocbase,0
5180 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5181 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5182 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5183 gcc_cv_ld_no_dot_syms=yes
5185 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5188 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5189 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5190 [Define if your PowerPC64 linker only needs function descriptor syms.])
5193 AC_CACHE_CHECK(linker large toc support,
5194 gcc_cv_ld_large_toc,
5195 [gcc_cv_ld_large_toc=no
5196 if test x"$ld_is_gold" = xyes; then
5197 gcc_cv_ld_large_toc=yes
5198 elif test $in_tree_ld = yes ; then
5199 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5200 gcc_cv_ld_large_toc=yes
5202 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5203 cat > conftest.s <<EOF
5204 .section ".tbss","awT",@nobits
5210 addis 9,13,ie0@got@tprel@ha
5211 ld 9,ie0@got@tprel@l(9)
5213 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5214 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5215 gcc_cv_ld_large_toc=yes
5217 rm -f conftest conftest.o conftest.s
5220 if test x"$gcc_cv_ld_large_toc" = xyes; then
5221 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5222 [Define if your PowerPC64 linker supports a large TOC.])
5225 AC_CACHE_CHECK(linker toc pointer alignment,
5226 gcc_cv_ld_toc_align,
5227 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5228 cat > conftest.s <<EOF
5233 .section .data.rel.ro,"aw",@progbits
5238 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5239 && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
5240 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5242 rm -f conftest conftest.o conftest.s
5245 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5246 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5247 [Define to .TOC. alignment forced by your linker.])
5254 AC_CACHE_CHECK(linker large toc support,
5255 gcc_cv_ld_large_toc,
5256 [gcc_cv_ld_large_toc=no
5257 if test x$gcc_cv_as != x ; then
5258 cat > conftest.s <<EOF
5268 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5269 gcc_cv_ld_large_toc=yes
5271 rm -f conftest conftest.o conftest.s
5274 if test x"$gcc_cv_ld_large_toc" = xyes; then
5275 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5276 [Define if your PowerPC64 linker supports a large TOC.])
5281 AC_CACHE_CHECK(linker --build-id support,
5283 [gcc_cv_ld_buildid=no
5284 if test $in_tree_ld = yes ; then
5285 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5286 "$gcc_cv_gld_minor_version" -ge 18 -o \
5287 "$gcc_cv_gld_major_version" -gt 2 \
5288 && test $in_tree_ld_is_elf = yes; then
5289 gcc_cv_ld_buildid=yes
5291 elif test x$gcc_cv_ld != x; then
5292 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5293 gcc_cv_ld_buildid=yes
5296 if test x"$gcc_cv_ld_buildid" = xyes; then
5297 AC_DEFINE(HAVE_LD_BUILDID, 1,
5298 [Define if your linker supports --build-id.])
5301 AC_ARG_ENABLE(linker-build-id,
5302 [AS_HELP_STRING([--enable-linker-build-id],
5303 [compiler will always pass --build-id to linker])],
5305 enable_linker_build_id=no)
5307 if test x"$enable_linker_build_id" = xyes; then
5308 if test x"$gcc_cv_ld_buildid" = xyes; then
5309 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5310 [Define if gcc should always pass --build-id to linker.])
5312 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5316 # In binutils 2.21, GNU ld gained support for new emulations fully
5317 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5318 AC_CACHE_CHECK(linker *_sol2 emulation support,
5319 gcc_cv_ld_sol2_emulation,
5320 [gcc_cv_ld_sol2_emulation=no
5321 if test $in_tree_ld = yes ; then
5322 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5323 "$gcc_cv_gld_minor_version" -ge 21 -o \
5324 "$gcc_cv_gld_major_version" -gt 2 \
5325 && test $in_tree_ld_is_elf = yes; then
5326 gcc_cv_ld_sol2_emulation=yes
5328 elif test x$gcc_cv_ld != x; then
5329 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5330 grep _sol2 > /dev/null; then
5331 gcc_cv_ld_sol2_emulation=yes
5334 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5335 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5336 [Define if your linker supports the *_sol2 emulations.])
5339 AC_CACHE_CHECK(linker --sysroot support,
5341 [gcc_cv_ld_sysroot=no
5342 if test $in_tree_ld = yes ; then
5343 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5344 gcc_cv_ld_sysroot=yes
5346 elif test x$gcc_cv_ld != x; then
5347 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5348 gcc_cv_ld_sysroot=yes
5351 if test x"$gcc_cv_ld_sysroot" = xyes; then
5352 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5353 [Define if your linker supports --sysroot.])
5358 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5359 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5360 gcc_cv_solaris_crts,
5361 [gcc_cv_solaris_crts=no
5362 if test x$host != x$target; then
5363 if test "x$with_sysroot" = xyes; then
5364 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5366 target_sysroot="${with_sysroot}"
5369 target_libdir="$target_sysroot/usr/lib"
5370 # At the time they were added, gcrt1.o became a symlink for backwards
5371 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5373 i?86-*-solaris2* | x86_64-*-solaris2*)
5374 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5377 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5382 if test x$gcc_cv_solaris_crts = xyes; then
5383 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5384 [Define if the system-provided CRTs are present on Solaris.])
5387 # Test for stack protector support in target C library.
5388 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5389 gcc_cv_libc_provides_ssp,
5390 [gcc_cv_libc_provides_ssp=no
5393 # All versions of musl provide stack protector
5394 gcc_cv_libc_provides_ssp=yes;;
5395 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5396 # glibc 2.4 and later provides __stack_chk_fail and
5397 # either __stack_chk_guard, or TLS access to stack guard canary.
5398 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5399 [if test -f $target_header_dir/features.h \
5400 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5401 $target_header_dir/features.h > /dev/null; then
5402 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5403 $target_header_dir/features.h > /dev/null && \
5404 test -f $target_header_dir/bits/uClibc_config.h && \
5405 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5406 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5407 gcc_cv_libc_provides_ssp=yes
5409 # all versions of Bionic support stack protector
5410 elif test -f $target_header_dir/sys/cdefs.h \
5411 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5412 $target_header_dir/sys/cdefs.h > /dev/null; then
5413 gcc_cv_libc_provides_ssp=yes
5417 # Avoid complicated tests (see
5418 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5419 # simply assert that glibc does provide this, which is true for all
5420 # realistically usable GNU/Hurd configurations.
5421 # All supported versions of musl provide it as well
5422 gcc_cv_libc_provides_ssp=yes;;
5423 *-*-darwin* | *-*-freebsd*)
5424 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5425 [echo "no __stack_chk_fail on this target"])
5427 *) gcc_cv_libc_provides_ssp=no ;;
5430 if test x$gcc_cv_libc_provides_ssp = xyes; then
5431 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5432 [Define if your target C library provides stack protector support])
5435 # Check whether --enable-default-ssp was given.
5436 AC_ARG_ENABLE(default-ssp,
5437 [AS_HELP_STRING([--enable-default-ssp],
5438 [enable Stack Smashing Protection as default])],[
5439 if test x$gcc_cv_libc_provides_ssp = xyes; then
5441 ia64*-*-*) enable_default_ssp=no ;;
5442 *) enable_default_ssp=$enableval ;;
5445 enable_default_ssp=no
5447 enable_default_ssp=no)
5448 if test x$enable_default_ssp == xyes ; then
5449 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5450 [Define if your target supports default stack protector and it is enabled.])
5452 AC_SUBST([enable_default_ssp])
5454 # Test for <sys/sdt.h> on the target.
5455 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5456 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5458 if test -f $target_header_dir/sys/sdt.h; then
5460 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5461 [Define if your target C library provides sys/sdt.h])
5463 AC_MSG_RESULT($have_sys_sdt_h)
5465 # Check if TFmode long double should be used by default or not.
5466 # Some glibc targets used DFmode long double, but with glibc 2.4
5467 # and later they can use TFmode.
5469 powerpc*-*-linux* | \
5473 AC_ARG_WITH(long-double-128,
5474 [AS_HELP_STRING([--with-long-double-128],
5475 [use 128-bit long double by default])],
5476 gcc_cv_target_ldbl128="$with_long_double_128",
5477 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5478 [gcc_cv_target_ldbl128=no
5479 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5480 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5481 && gcc_cv_target_ldbl128=yes
5485 if test x$gcc_cv_target_ldbl128 = xyes; then
5486 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5487 [Define if TFmode long double should be the default])
5490 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5491 gcc_cv_target_dl_iterate_phdr=unknown
5493 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5494 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5495 # libdl there, both complicating its use and breaking compatibility
5496 # between Solaris 10 updates.
5497 *-*-solaris2.1[[1-9]]*)
5498 # <link.h> needs both a dl_iterate_phdr declaration and support for
5499 # compilation with largefile support.
5500 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5501 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5502 gcc_cv_target_dl_iterate_phdr=yes
5504 gcc_cv_target_dl_iterate_phdr=no
5507 *-*-dragonfly* | *-*-freebsd*)
5508 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5509 gcc_cv_target_dl_iterate_phdr=yes
5511 gcc_cv_target_dl_iterate_phdr=no
5515 gcc_cv_target_dl_iterate_phdr=yes
5518 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5519 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5520 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5521 [Define if your target C library provides the `dl_iterate_phdr' function.])
5523 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5525 # We no longer support different GC mechanisms. Emit an error if
5526 # the user configures with --with-gc.
5528 [AS_HELP_STRING([--with-gc={page,zone}],
5529 [this option is not supported anymore. It used to choose
5530 the garbage collection mechanism to use with the compiler])],
5531 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5534 # Libraries to use on the host. This will normally be set by the top
5535 # level Makefile. Here we simply capture the value for our Makefile.
5536 if test -z "${HOST_LIBS+set}"; then
5541 # Use the system's zlib library.
5544 dnl Very limited version of automake's enable-maintainer-mode
5546 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5547 dnl maintainer-mode is disabled by default
5548 AC_ARG_ENABLE(maintainer-mode,
5549 [AS_HELP_STRING([--enable-maintainer-mode],
5550 [enable make rules and dependencies not useful
5551 (and sometimes confusing) to the casual installer])],
5552 maintainer_mode=$enableval,
5555 AC_MSG_RESULT($maintainer_mode)
5557 if test "$maintainer_mode" = "yes"; then
5564 dnl Whether to prevent multiple front-ends from linking at the same time
5566 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5567 AC_ARG_ENABLE(link-mutex,
5568 [AS_HELP_STRING([--enable-link-mutex],
5569 [avoid linking multiple front-ends at once to avoid thrashing
5570 on the build machine])],
5571 do_link_mutex=$enableval,
5573 AC_MSG_RESULT($do_link_mutex)
5575 if test "$do_link_mutex" = "yes"; then
5580 AC_SUBST(DO_LINK_MUTEX)
5586 # Make empty files to contain the specs and options for each language.
5587 # Then add #include lines to for a compiler that has specs and/or options.
5593 # These (without "all_") are set in each config-lang.in.
5594 # `language' must be a single word so is spelled singularly.
5597 all_outputs='Makefile'
5598 # List of language makefile fragments.
5600 # Additional files for gengtype
5601 all_gtfiles="$target_gtfiles"
5603 # These are the languages that are set in --enable-languages,
5604 # and are available in the GCC tree.
5605 all_selected_languages=
5607 # Add the language fragments.
5608 # Languages are added via two mechanisms. Some information must be
5609 # recorded in makefile variables, these are defined in config-lang.in.
5610 # We accumulate them and plug them into the main Makefile.
5611 # The other mechanism is a set of hooks for each of the main targets
5612 # like `clean', `install', etc.
5614 language_hooks="Make-hooks"
5616 for lang in ${srcdir}/*/config-lang.in
5619 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5621 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5622 if test "x$lang_alias" = x
5624 echo "$lang doesn't set \$language." 1>&2
5627 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5628 subdirs="$subdirs $subdir"
5630 # $gcc_subdir is where the gcc integration files are to be found
5631 # for a language, both for internal compiler purposes (compiler
5632 # sources implementing front-end to GCC tree converters), and for
5633 # build infrastructure purposes (Make-lang.in, etc.)
5635 # This will be <subdir> (relative to $srcdir) if a line like
5636 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5637 # is found in <langdir>/config-lang.in, and will remain <langdir>
5640 # Except for the language alias (fetched above), the regular
5641 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5642 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5643 # only this and the language alias.
5645 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5646 if [ "$gcc_subdir" = "" ]; then
5647 gcc_subdir="$subdir"
5650 case ",$enable_languages," in
5652 all_selected_languages="$all_selected_languages $lang_alias"
5653 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5654 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5666 . ${srcdir}/$gcc_subdir/config-lang.in
5667 if test "x$language" = x
5669 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5674 case ",$enable_languages," in
5677 for i in $subdir_requires; do
5678 test -f "${srcdir}/$i/config-lang.in" && continue
5686 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5687 if test -f $srcdir/$gcc_subdir/lang.opt; then
5688 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5689 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5691 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5692 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5694 all_languages="$all_languages $language"
5695 all_compilers="$all_compilers $compilers"
5696 all_outputs="$all_outputs $outputs"
5697 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5698 case ",$enable_languages," in
5700 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5702 AC_SUBST(enable_lto)
5709 for language in $all_selected_languages
5711 check_languages="$check_languages check-$language"
5714 # We link each language in with a set of hooks, reached indirectly via
5715 # lang.${target}. Only do so for selected languages.
5719 target_list="all.cross start.encap rest.encap tags \
5720 install-common install-man install-info install-pdf install-html dvi \
5721 pdf html uninstall info man srcextra srcman srcinfo \
5722 mostlyclean clean distclean maintainer-clean install-plugin"
5724 for t in $target_list
5727 for lang in $all_selected_languages
5731 echo "lang.$t: $x" >> Make-hooks
5735 # Option include files
5738 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5739 option_includes="option-includes.mk"
5740 AC_SUBST_FILE(option_includes)
5748 echo "dir ." > .gdbinit
5749 echo "dir ${srcdir}" >> .gdbinit
5750 if test x$gdb_needs_out_file_path = xyes
5752 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5754 if test "x$subdirs" != x; then
5757 echo "dir ${srcdir}/$s" >> .gdbinit
5760 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5761 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5763 # Put a breakpoint on __asan_report_error to help with debugging buffer
5766 *-fsanitize=address*)
5767 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5771 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5772 AC_SUBST(gcc_tooldir)
5775 # Find a directory in which to install a shared libgcc.
5777 AC_ARG_ENABLE(version-specific-runtime-libs,
5778 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5779 [specify that runtime libraries should be
5780 installed in a compiler-specific directory])])
5782 # Substitute configuration variables
5785 AC_SUBST(all_compilers)
5786 AC_SUBST(all_gtfiles)
5787 AC_SUBST(all_lang_makefrags)
5788 AC_SUBST(all_languages)
5789 AC_SUBST(all_selected_languages)
5790 AC_SUBST(build_exeext)
5791 AC_SUBST(build_install_headers_dir)
5792 AC_SUBST(build_xm_file_list)
5793 AC_SUBST(build_xm_include_list)
5794 AC_SUBST(build_xm_defines)
5795 AC_SUBST(build_file_translate)
5796 AC_SUBST(check_languages)
5797 AC_SUBST(cpp_install_dir)
5798 AC_SUBST(xmake_file)
5799 AC_SUBST(tmake_file)
5800 AC_SUBST(TM_ENDIAN_CONFIG)
5801 AC_SUBST(TM_MULTILIB_CONFIG)
5802 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5803 AC_SUBST(extra_gcc_objs)
5804 AC_SUBST(user_headers_inc_next_pre)
5805 AC_SUBST(user_headers_inc_next_post)
5806 AC_SUBST(extra_headers_list)
5807 AC_SUBST(extra_objs)
5808 AC_SUBST(extra_programs)
5809 AC_SUBST(float_h_file)
5810 AC_SUBST(gcc_config_arguments)
5811 AC_SUBST(gcc_gxx_include_dir)
5812 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5813 AC_SUBST(host_exeext)
5814 AC_SUBST(host_xm_file_list)
5815 AC_SUBST(host_xm_include_list)
5816 AC_SUBST(host_xm_defines)
5817 AC_SUBST(out_host_hook_obj)
5819 AC_SUBST(lang_opt_files)
5820 AC_SUBST(lang_specs_files)
5821 AC_SUBST(lang_tree_files)
5822 AC_SUBST(local_prefix)
5824 AC_SUBST(objc_boehm_gc)
5826 AC_SUBST(out_object_file)
5827 AC_SUBST(common_out_file)
5828 AC_SUBST(common_out_object_file)
5829 AC_SUBST(tm_file_list)
5830 AC_SUBST(tm_include_list)
5831 AC_SUBST(tm_defines)
5832 AC_SUBST(tm_p_file_list)
5833 AC_SUBST(tm_p_include_list)
5834 AC_SUBST(xm_file_list)
5835 AC_SUBST(xm_include_list)
5836 AC_SUBST(xm_defines)
5837 AC_SUBST(use_gcc_stdint)
5838 AC_SUBST(c_target_objs)
5839 AC_SUBST(cxx_target_objs)
5840 AC_SUBST(fortran_target_objs)
5841 AC_SUBST(target_cpu_default)
5843 AC_SUBST_FILE(language_hooks)
5846 if test x${build} = x${host} ; then
5847 if test x${host} = x${target} ; then
5848 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5850 echo "Links are now set up to build a cross-compiler" 1>&2
5851 echo " from ${host} to ${target}." 1>&2
5854 if test x${host} = x${target} ; then
5855 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5856 echo " for ${target}." 1>&2
5858 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5859 echo " from ${host} to ${target}." 1>&2
5863 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5864 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5866 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5867 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5868 if test "x${ISLLIBS}" != "x" ; then
5869 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5872 # Check whether isl_schedule_constraints_compute_schedule is available;
5873 # it's new in ISL-0.13.
5874 # Check whether isl_options_set_schedule_serialize_sccs is available;
5875 # it's new in ISL-0.15.
5876 if test "x${ISLLIBS}" != "x" ; then
5877 saved_CXXFLAGS="$CXXFLAGS"
5878 CXXFLAGS="$CXXFLAGS $ISLINC"
5880 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5882 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5883 AC_TRY_LINK([#include <isl/schedule.h>],
5884 [isl_schedule_constraints_compute_schedule (NULL);],
5885 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5886 [ac_has_isl_schedule_constraints_compute_schedule=no])
5887 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5889 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5890 AC_TRY_LINK([#include <isl/schedule.h>],
5891 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5892 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5893 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5894 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5896 AC_MSG_CHECKING([Checking for isl_ctx_get_max_operations])
5897 AC_TRY_LINK([#include <isl/ctx.h>],
5898 [isl_ctx_get_max_operations (isl_ctx_alloc ());],
5899 [ac_has_isl_ctx_get_max_operations=yes],
5900 [ac_has_isl_ctx_get_max_operations=no])
5901 AC_MSG_RESULT($ac_has_isl_ctx_get_max_operations)
5904 CXXFLAGS="$saved_CXXFLAGS"
5906 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5907 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5908 [Define if isl_schedule_constraints_compute_schedule exists.])
5911 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5912 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5913 [Define if isl_options_set_schedule_serialize_sccs exists.])
5915 if test x"$ac_has_isl_ctx_get_max_operations" = x"yes"; then
5916 AC_DEFINE(HAVE_ISL_CTX_MAX_OPERATIONS, 1,
5917 [Define if isl_ctx_get_max_operations exists.])
5922 AC_SUBST(pluginlibs)
5923 AC_SUBST(enable_plugin)
5924 if test x"$enable_plugin" = x"yes"; then
5925 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5929 # Enable --enable-host-shared
5930 AC_ARG_ENABLE(host-shared,
5931 [AS_HELP_STRING([--enable-host-shared],
5932 [build host code as shared libraries])],
5933 [PICFLAG=-fPIC], [PICFLAG=])
5934 AC_SUBST(enable_host_shared)
5938 AC_ARG_ENABLE(libquadmath-support,
5939 [AS_HELP_STRING([--disable-libquadmath-support],
5940 [disable libquadmath support for Fortran])],
5941 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5942 ENABLE_LIBQUADMATH_SUPPORT=yes)
5943 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5944 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5945 [Define to 1 to enable libquadmath support])
5949 # Specify what hash style to use by default.
5950 AC_ARG_WITH([linker-hash-style],
5951 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5952 [specify the linker hash style])],
5953 [case x"$withval" in
5955 LINKER_HASH_STYLE=sysv
5958 LINKER_HASH_STYLE=gnu
5961 LINKER_HASH_STYLE=both
5964 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5967 [LINKER_HASH_STYLE=''])
5968 if test x"${LINKER_HASH_STYLE}" != x; then
5969 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5970 [The linker hash style])
5973 # Specify what should be the default of -fdiagnostics-color option.
5974 AC_ARG_WITH([diagnostics-color],
5975 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5976 [specify the default of -fdiagnostics-color option
5977 auto-if-env stands for -fdiagnostics-color=auto if
5978 GCC_COLOR environment variable is present and
5979 -fdiagnostics-color=never otherwise])],
5980 [case x"$withval" in
5982 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
5985 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
5988 DIAGNOSTICS_COLOR_DEFAULT=-1
5991 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
5994 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
5997 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
5998 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
5999 [The default for -fdiagnostics-color option])
6001 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6002 # of jit/jit-playback.c.
6003 cat > gcc-driver-name.h <<EOF
6004 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6007 # Check whether --enable-default-pie was given.
6008 AC_ARG_ENABLE(default-pie,
6009 [AS_HELP_STRING([--enable-default-pie],
6010 [enable Position Independent Executable as default])],
6011 enable_default_pie=$enableval,
6012 enable_default_pie=no)
6013 if test x$enable_default_pie == xyes ; then
6014 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6015 [Define if your target supports default PIE and it is enabled.])
6017 AC_SUBST([enable_default_pie])
6019 # Check if -fno-PIE works.
6020 AC_CACHE_CHECK([for -fno-PIE option],
6022 [saved_CXXFLAGS="$CXXFLAGS"
6023 CXXFLAGS="$CXXFLAGS -fno-PIE"
6024 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6025 [gcc_cv_c_no_fpie=yes],
6026 [gcc_cv_c_no_fpie=no])
6027 CXXFLAGS="$saved_CXXFLAGS"])
6028 if test "$gcc_cv_c_no_fpie" = "yes"; then
6029 NO_PIE_CFLAGS="-fno-PIE"
6031 AC_SUBST([NO_PIE_CFLAGS])
6033 # Check if -no-pie works.
6034 AC_CACHE_CHECK([for -no-pie option],
6036 [saved_LDFLAGS="$LDFLAGS"
6037 LDFLAGS="$LDFLAGS -no-pie"
6038 AC_LINK_IFELSE([int main(void) {return 0;}],
6039 [gcc_cv_no_pie=yes],
6041 LDFLAGS="$saved_LDFLAGS"])
6042 if test "$gcc_cv_no_pie" = "yes"; then
6043 NO_PIE_FLAG="-no-pie"
6045 AC_SUBST([NO_PIE_FLAG])
6047 # Check linker supports '-z bndplt'
6048 ld_bndplt_support=no
6049 AC_MSG_CHECKING(linker -z bndplt option)
6050 if test x"$ld_is_gold" = xno; then
6051 if test $in_tree_ld = yes ; then
6052 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6053 ld_bndplt_support=yes
6055 elif test x$gcc_cv_ld != x; then
6056 # Check if linker supports -a bndplt option
6057 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6058 ld_bndplt_support=yes
6062 if test x"$ld_bndplt_support" = xyes; then
6063 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6064 [Define if your linker supports -z bndplt])
6066 AC_MSG_RESULT($ld_bndplt_support)
6068 # Configure the subdirectories
6069 # AC_CONFIG_SUBDIRS($subdirs)
6071 # Create the Makefile
6072 # and configure language subdirectories
6073 AC_CONFIG_FILES($all_outputs)
6075 AC_CONFIG_COMMANDS([default],
6077 case ${CONFIG_HEADERS} in
6078 *auto-host.h:config.in*)
6081 # Make sure all the subdirs exist.
6082 for d in $subdirs doc build common c-family
6084 test -d $d || mkdir $d
6087 [subdirs='$subdirs'])