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(CHECKING_P, 1,
570 [Define to 1 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_DEFINE(CHECKING_P, 0)
576 AC_SUBST(nocommon_flag)
577 if test x$ac_df_checking != x ; then
578 AC_DEFINE(ENABLE_DF_CHECKING, 1,
579 [Define if you want more run-time sanity checks for dataflow.])
581 if test x$ac_assert_checking != x ; then
582 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
583 [Define if you want assertions enabled. This is a cheap check.])
585 if test x$ac_gimple_checking != x ; then
586 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
587 [Define if you want operations on GIMPLE (the basic data structure of
588 the high-level optimizers) to be checked for dynamic type safety at
589 runtime. This is moderately expensive.])
591 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
592 if test x$ac_runtime_checking != x ; then
593 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
594 [Define if you want runtime assertions enabled. This is a cheap check.])
596 if test x$ac_tree_checking != x ; then
597 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
598 [Define if you want all operations on trees (the basic data
599 structure of the front ends) to be checked for dynamic type safety
600 at runtime. This is moderately expensive.
604 if test x$ac_types_checking != x ; then
605 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
606 [Define if you want all gimple types to be verified after gimplifiation.
610 AC_SUBST(TREECHECKING)
611 if test x$ac_rtl_checking != x ; then
612 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
613 [Define if you want all operations on RTL (the basic data structure
614 of the optimizer and back end) to be checked for dynamic type safety
615 at runtime. This is quite expensive.])
617 if test x$ac_rtlflag_checking != x ; then
618 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
619 [Define if you want RTL flag accesses to be checked against the RTL
620 codes that are supported for each access macro. This is relatively
623 if test x$ac_gc_checking != x ; then
624 AC_DEFINE(ENABLE_GC_CHECKING, 1,
625 [Define if you want the garbage collector to do object poisoning and
626 other memory allocation checks. This is quite expensive.])
628 if test x$ac_gc_always_collect != x ; then
629 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
630 [Define if you want the garbage collector to operate in maximally
631 paranoid mode, validating the entire heap and collecting garbage at
632 every opportunity. This is extremely expensive.])
634 if test x$ac_fold_checking != x ; then
635 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
636 [Define if you want fold checked that it never destructs its argument.
637 This is quite expensive.])
639 valgrind_path_defines=
642 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
643 dnl # an if statement. This was the source of very frustrating bugs
644 dnl # in converting to autoconf 2.5x!
645 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
647 # It is certainly possible that there's valgrind but no valgrind.h.
648 # GCC relies on making annotations so we must have both.
649 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
650 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
651 [[#include <valgrind/memcheck.h>
652 #ifndef VALGRIND_DISCARD
653 #error VALGRIND_DISCARD not defined
655 [gcc_cv_header_valgrind_memcheck_h=yes],
656 [gcc_cv_header_valgrind_memcheck_h=no])
657 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
658 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
659 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
660 [[#include <memcheck.h>
661 #ifndef VALGRIND_DISCARD
662 #error VALGRIND_DISCARD not defined
664 [gcc_cv_header_memcheck_h=yes],
665 [gcc_cv_header_memcheck_h=no])
666 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
667 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
668 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
669 [Define if valgrind's valgrind/memcheck.h header is installed.])
671 if test $gcc_cv_header_memcheck_h = yes; then
672 AC_DEFINE(HAVE_MEMCHECK_H, 1,
673 [Define if valgrind's memcheck.h header is installed.])
676 if test x$ac_valgrind_checking != x ; then
677 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
678 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
679 if test "x$valgrind_path" = "x" \
680 || (test $have_valgrind_h = no \
681 && test $gcc_cv_header_memcheck_h = no \
682 && test $gcc_cv_header_valgrind_memcheck_h = no); then
683 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
685 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
686 valgrind_command="$valgrind_path -q"
687 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
688 [Define if you want to run subprograms and generated programs
689 through valgrind (a memory checker). This is extremely expensive.])
691 AC_SUBST(valgrind_path_defines)
692 AC_SUBST(valgrind_command)
694 # Enable code coverage collection
695 AC_ARG_ENABLE(coverage,
696 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
697 [enable compiler's code coverage collection.
698 Use to measure compiler performance and locate
699 unused parts of the compiler. With LEVEL, specify
700 optimization. Values are opt, noopt,
702 [case "${enableval}" in
704 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
707 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
710 # a.k.a. --disable-coverage
714 AC_MSG_ERROR(unknown coverage setting $enableval)
718 AC_SUBST(coverage_flags)
720 AC_ARG_ENABLE(gather-detailed-mem-stats,
721 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
722 [enable detailed memory allocation stats gathering])], [],
723 [enable_gather_detailed_mem_stats=no])
724 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
725 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
726 [Define to enable detailed memory allocation stats gathering.])
728 AC_ARG_ENABLE(valgrind-annotations,
729 [AS_HELP_STRING([--enable-valgrind-annotations],
730 [enable valgrind runtime interaction])], [],
731 [enable_valgrind_annotations=no])
732 if test x$enable_valgrind_annotations != xno \
733 || test x$ac_valgrind_checking != x; then
734 if (test $have_valgrind_h = no \
735 && test $gcc_cv_header_memcheck_h = no \
736 && test $gcc_cv_header_valgrind_memcheck_h = no); then
737 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
739 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
740 [Define to get calls to the valgrind runtime enabled.])
743 # -------------------------------
744 # Miscenalleous configure options
745 # -------------------------------
749 [AS_HELP_STRING([--with-stabs],
750 [arrange to use stabs instead of host debug format])],
754 # Determine whether or not multilibs are enabled.
755 AC_ARG_ENABLE(multilib,
756 [AS_HELP_STRING([--enable-multilib],
757 [enable library support for multiple ABIs])],
758 [], [enable_multilib=yes])
759 AC_SUBST(enable_multilib)
761 # Determine whether or not multiarch is enabled.
762 AC_ARG_ENABLE(multiarch,
763 [AS_HELP_STRING([--enable-multiarch],
764 [enable support for multiarch paths])],
765 [case "${enableval}" in
766 yes|no|auto) enable_multiarch=$enableval;;
767 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
768 esac], [enable_multiarch=auto])
769 if test x${enable_multiarch} = xauto; then
770 if test x${with_native_system_header_dir} != x; then
771 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
774 if test x$host != x$target && test "x$with_sysroot" = x; then
775 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
779 AC_MSG_CHECKING(for multiarch configuration)
780 AC_SUBST(enable_multiarch)
781 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
783 # needed for setting the multiarch name for soft-float/hard-float ABIs
787 # Enable __cxa_atexit for C++.
788 AC_ARG_ENABLE(__cxa_atexit,
789 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
792 # Enable C extension for decimal float if target supports it.
793 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
795 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
796 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
797 [Define to 1 to enable decimal float extension to C.])
799 # Use default_decimal_float for dependency.
800 enable_decimal_float=$default_decimal_float
802 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
803 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
804 [Define to 1 to specify that we are using the BID decimal floating
805 point format instead of DPD])
807 # Enable C extension for fixed-point arithmetic.
808 AC_ARG_ENABLE(fixed-point,
809 [AS_HELP_STRING([--enable-fixed-point],
810 [enable fixed-point arithmetic extension to C])],
815 enable_fixed_point=yes
819 enable_fixed_point=yes
822 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
823 enable_fixed_point=no
827 AC_SUBST(enable_fixed_point)
829 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
830 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
831 [Define to 1 to enable fixed-point arithmetic extension to C.])
834 # Pass with no value to take the default
835 # Pass with a value to specify a thread package
836 AC_ARG_ENABLE(threads,
837 [AS_HELP_STRING([[--enable-threads[=LIB]]],
838 [enable thread usage for target GCC,
839 using LIB thread package])],,
843 [AS_HELP_STRING([--enable-tls],
844 [enable or disable generation of tls code
845 overriding the assembler check for tls support])],
849 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
850 Valid choices are 'yes' and 'no'.]) ;;
854 AC_ARG_ENABLE(objc-gc,
855 [AS_HELP_STRING([--enable-objc-gc],
856 [enable the use of Boehm's garbage collector with
857 the GNU Objective-C runtime])],
858 if test x$enable_objc_gc = xno; then
866 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
867 dwarf2="$with_dwarf2",
870 AC_ARG_ENABLE(shared,
871 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
873 case $enable_shared in
877 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
878 for pkg in $enableval; do
879 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
886 ], [enable_shared=yes])
887 AC_SUBST(enable_shared)
890 [AS_HELP_STRING([--with-specs=SPECS],
891 [add SPECS to driver command-line processing])],
892 [CONFIGURE_SPECS=$withval],
895 AC_SUBST(CONFIGURE_SPECS)
897 ACX_PKGVERSION([GCC])
898 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
900 # Sanity check enable_languages in case someone does not run the toplevel
901 # configure # script.
902 AC_ARG_ENABLE(languages,
903 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
904 [case ,${enable_languages}, in
906 # go safe -- we cannot be much sure without the toplevel
908 # analysis of which target libs are present and usable
912 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
917 enable_languages=c,${enable_languages}
920 [enable_languages=c])
922 if test x"$enable_as_accelerator_for" != x; then
923 AC_DEFINE(ACCEL_COMPILER, 1,
924 [Define if this compiler should be built as the offload target compiler.])
925 enable_as_accelerator=yes
928 # In this case we expect offload compiler to be built as native, so we
929 # need to rename the driver to avoid clashes with host's drivers.
930 program_transform_name="s&^&${target}-&" ;;
932 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
933 program_transform_name=`echo $program_transform_name | sed $sedscript`
934 accel_dir_suffix=/accel/${target_noncanonical}
935 real_target_noncanonical=${enable_as_accelerator_for}
937 AC_SUBST(enable_as_accelerator)
938 AC_SUBST(real_target_noncanonical)
939 AC_SUBST(accel_dir_suffix)
941 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
942 tgt=`echo $tgt | sed 's/=.*//'`
943 if test x"$offload_targets" = x; then
946 offload_targets="$offload_targets,$tgt"
949 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
950 [Define to offload targets, separated by commas.])
951 if test x"$offload_targets" != x; then
952 AC_DEFINE(ENABLE_OFFLOADING, 1,
953 [Define this to enable support for offloading.])
956 AC_ARG_WITH(multilib-list,
957 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
959 with_multilib_list=default)
961 # -------------------------
962 # Checks for other programs
963 # -------------------------
967 # Find some useful tools
969 # We need awk to create options.c and options.h.
970 # Bail out if it's missing.
972 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
979 AC_SUBST(ranlib_flags)
983 # See if cmp has --ignore-initial.
984 gcc_AC_PROG_CMP_IGNORE_INITIAL
986 # See if we have the mktemp command.
987 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
989 # See if makeinfo has been installed and is modern enough
990 # that we can use it.
991 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
992 [GNU texinfo.* \([0-9][0-9.]*\)],
993 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
994 if test $gcc_cv_prog_makeinfo_modern = no; then
996 *** Makeinfo is missing or too old.
997 *** Info documentation will not be built.])
1002 AC_SUBST(BUILD_INFO)
1004 # Is pod2man recent enough to regenerate manpages?
1005 AC_MSG_CHECKING([for recent Pod::Man])
1006 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1008 GENERATED_MANPAGES=generated-manpages
1013 AC_SUBST(GENERATED_MANPAGES)
1015 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1018 dnl Don't use AC_PROG_LEX; we insist on flex.
1019 dnl LEXLIB is not useful in gcc.
1020 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1023 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1025 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1026 # check for build == host before using them.
1029 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1030 && test -d ../binutils ; then
1031 NM='${objdir}/../binutils/nm-new'
1033 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1037 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1038 && test -d ../binutils ; then
1039 AR='${objdir}/../binutils/ar'
1041 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1044 # The jit documentation looks better if built with sphinx, but can be
1045 # built with texinfo if sphinx is not available.
1046 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1047 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1049 # --------------------
1050 # Checks for C headers
1051 # --------------------
1053 # Need to reject headers which give warnings, so that the -Werror bootstrap
1054 # works later. *sigh* This needs to come before all header checks.
1061 AC_HEADER_TIOCGWINSZ
1062 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1063 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1064 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1065 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1067 # Check for thread headers.
1068 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1069 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1071 # These tests can't be done till we know if we have limits.h.
1075 # ----------------------
1076 # Checks for C++ headers
1077 # ----------------------
1079 dnl Autoconf will give an error in the configure script if there is no
1080 dnl C++ preprocessor. Hack to prevent that.
1081 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1083 m4_popdef([AC_MSG_ERROR])[]dnl
1085 AC_CHECK_HEADERS(unordered_map)
1086 AC_CHECK_HEADERS(tr1/unordered_map)
1087 AC_CHECK_HEADERS(ext/hash_map)
1090 # Dependency checking.
1094 AC_CONFIG_COMMANDS([gccdepdir],[
1095 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1096 for lang in $subdirs c-family common
1098 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1099 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1101 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1108 # These libraries may be used by collect2.
1109 # We may need a special search path to get them linked.
1110 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1112 for libs in '' -lld -lmld \
1113 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1114 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1117 AC_TRY_LINK_FUNC(ldopen,
1118 [gcc_cv_collect2_libs="$libs"; break])
1121 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1122 case $gcc_cv_collect2_libs in
1124 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1126 AC_SUBST(COLLECT2_LIBS)
1128 # When building Ada code on Alpha, we need exc_resume which is usually in
1129 # -lexc. So test for it.
1132 AC_SEARCH_LIBS(exc_resume, exc)
1135 AC_SUBST(GNAT_LIBEXC)
1137 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1140 AC_SEARCH_LIBS(kstat_open, kstat)
1141 EXTRA_GCC_LIBS="$LIBS"
1143 AC_SUBST(EXTRA_GCC_LIBS)
1145 # Some systems put ldexp and frexp in libm instead of libc; assume
1146 # they're both in the same place. jcf-dump needs them.
1149 AC_SEARCH_LIBS(ldexp, m)
1154 # Use <inttypes.h> only if it exists,
1155 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1157 AC_MSG_CHECKING(for inttypes.h)
1158 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1159 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1160 [[#define __STDC_FORMAT_MACROS
1161 #include <sys/types.h>
1162 #include <inttypes.h>]],
1167 [gcc_cv_header_inttypes_h=yes],
1168 [gcc_cv_header_inttypes_h=no])])
1169 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1170 if test $gcc_cv_header_inttypes_h = yes; then
1171 AC_DEFINE(HAVE_INTTYPES_H, 1,
1172 [Define if you have a working <inttypes.h> header file.])
1175 dnl Disabled until we have a complete test for buggy enum bitfields.
1176 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1178 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1179 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1180 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1181 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1182 putchar_unlocked putc_unlocked)
1183 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1184 popen sysconf strsignal getrusage nl_langinfo \
1185 gettimeofday mbstowcs wcswidth mmap setlocale \
1186 gcc_UNLOCKED_FUNCS madvise)
1188 if test x$ac_cv_func_mbstowcs = xyes; then
1189 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1190 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1196 [gcc_cv_func_mbstowcs_works=yes],
1197 [gcc_cv_func_mbstowcs_works=no],
1198 [gcc_cv_func_mbstowcs_works=yes])])
1199 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1200 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1201 [Define this macro if mbstowcs does not crash when its
1202 first argument is NULL.])
1206 AC_CHECK_TYPE(ssize_t, int)
1207 AC_CHECK_TYPE(caddr_t, char *)
1209 GCC_AC_FUNC_MMAP_BLACKLIST
1213 # Under VMS, vfork works very differently than on Unix. The standard test
1214 # won't work, and it isn't easily adaptable. It makes more sense to
1216 ac_cv_func_vfork_works=yes
1223 # Until we have in-tree GNU iconv:
1225 if test -f "$LTLIBICONV"; then
1226 LIBICONV_DEP=$LTLIBICONV
1228 AC_SUBST(LIBICONV_DEP)
1234 # We will need to find libiberty.h and ansidecl.h
1235 saved_CFLAGS="$CFLAGS"
1236 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1237 saved_CXXFLAGS="$CXXFLAGS"
1238 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1240 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1241 # normal autoconf function for these. But force definition of
1242 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1243 # basename handling in libiberty.h.
1244 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1245 #undef HAVE_DECL_BASENAME
1246 #define HAVE_DECL_BASENAME 1
1247 #include "ansidecl.h"
1248 #include "system.h"])
1250 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1251 madvise stpcpy strnlen strsignal strverscmp \
1252 strtol strtoul strtoll strtoull setenv unsetenv \
1253 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1254 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1255 #include "ansidecl.h"
1256 #include "system.h"])
1258 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1259 #include "ansidecl.h"
1261 #ifdef HAVE_SYS_RESOURCE_H
1262 #include <sys/resource.h>
1266 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1267 #include "ansidecl.h"
1269 #ifdef HAVE_SYS_RESOURCE_H
1270 #include <sys/resource.h>
1272 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1273 [Define to `long' if <sys/resource.h> doesn't define.])])
1275 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1276 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1277 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1278 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1279 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1280 #include "ansidecl.h"
1289 gcc_AC_CHECK_DECLS(times, , ,[
1290 #include "ansidecl.h"
1292 #ifdef HAVE_SYS_TIMES_H
1293 #include <sys/times.h>
1297 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1298 #include "ansidecl.h"
1303 # More time-related stuff.
1304 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1305 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1306 #include "ansidecl.h"
1308 #ifdef HAVE_SYS_TIMES_H
1309 #include <sys/times.h>
1311 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1312 if test $ac_cv_struct_tms = yes; then
1313 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1314 [Define if <sys/times.h> defines struct tms.])
1317 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1318 # revisit after autoconf 2.50.
1319 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1320 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1321 #include "ansidecl.h"
1323 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1324 if test $gcc_cv_type_clock_t = yes; then
1325 AC_DEFINE(HAVE_CLOCK_T, 1,
1326 [Define if <time.h> defines clock_t.])
1329 # Check if F_SETLKW is supported by fcntl.
1330 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1331 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1332 #include <fcntl.h>]], [[
1338 return fcntl (1, F_SETLKW, &fl);]])],
1339 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1340 if test $ac_cv_f_setlkw = yes; then
1341 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1342 [Define if F_SETLKW supported by fcntl.])
1345 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1346 CFLAGS="$saved_CFLAGS"
1347 CXXFLAGS="$saved_CXXFLAGS"
1349 # mkdir takes a single argument on some systems.
1350 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1358 # With Setjmp/Longjmp based exception handling.
1359 AC_ARG_ENABLE(sjlj-exceptions,
1360 [AS_HELP_STRING([--enable-sjlj-exceptions],
1361 [arrange to use setjmp/longjmp exception handling])],
1364 if test $enableval != yes; then
1365 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1370 force_sjlj_exceptions=yes],
1373 force_sjlj_exceptions=yes
1377 force_sjlj_exceptions=yes
1381 force_sjlj_exceptions=no
1384 if test $force_sjlj_exceptions = yes; then
1385 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1386 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1387 [Define 0/1 to force the choice for exception handling model.])
1390 # --------------------------------------------------------
1391 # Build, host, and target specific configuration fragments
1392 # --------------------------------------------------------
1394 # Collect build-machine-specific information.
1395 . ${srcdir}/config.build
1397 # Collect host-machine-specific information.
1398 . ${srcdir}/config.host
1402 # Collect target-machine-specific information.
1403 . ${srcdir}/config.gcc
1405 extra_objs="${host_extra_objs} ${extra_objs}"
1406 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1408 # Default the target-machine variables that were not explicitly set.
1409 if test x"$tm_file" = x
1410 then tm_file=$cpu_type/$cpu_type.h; fi
1412 if test x"$extra_headers" = x
1413 then extra_headers=; fi
1415 if test x$md_file = x
1416 then md_file=$cpu_type/$cpu_type.md; fi
1418 if test x$out_file = x
1419 then out_file=$cpu_type/$cpu_type.c; fi
1421 if test x"$tmake_file" = x
1422 then tmake_file=$cpu_type/t-$cpu_type
1425 # Support --enable-initfini-array.
1426 if test x$enable_initfini_array != xno; then
1427 tm_file="${tm_file} initfini-array.h"
1430 if test x"$dwarf2" = xyes
1431 then tm_file="$tm_file tm-dwarf2.h"
1434 # Say what files are being used for the output code and MD file.
1435 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1436 echo "Using \`$srcdir/config/$md_file' as machine description file."
1438 # If any of the xm_file variables contain nonexistent files, warn
1439 # about them and drop them.
1442 for x in $build_xm_file; do
1443 if test -f $srcdir/config/$x
1445 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1451 for x in $host_xm_file; do
1452 if test -f $srcdir/config/$x
1454 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1460 for x in $xm_file; do
1461 if test -f $srcdir/config/$x
1463 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1469 for f in $tm_file; do
1472 if test $count = ax; then
1473 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1475 echo "Using the following target machine macro files:"
1476 for f in $tm_file; do
1477 echo " $srcdir/config/$f"
1481 if test x$use_long_long_for_widest_fast_int = xyes; then
1482 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1483 [Define to 1 if the 'long long' type is wider than 'long' but still
1484 efficiently supported by the host hardware.])
1487 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1488 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1490 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1491 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1494 for f in $host_xm_file; do
1497 if test $count = a; then
1499 elif test $count = ax; then
1500 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1502 echo "Using the following host machine macro files:"
1503 for f in $host_xm_file; do
1504 echo " $srcdir/config/$f"
1507 echo "Using ${out_host_hook_obj} for host machine hooks."
1509 if test "$host_xm_file" != "$build_xm_file"; then
1511 for f in $build_xm_file; do
1514 if test $count = a; then
1516 elif test $count = ax; then
1517 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1519 echo "Using the following build machine macro files:"
1520 for f in $build_xm_file; do
1521 echo " $srcdir/config/$f"
1526 if test -n "$configured_native_system_header_dir"; then
1527 native_system_header_dir=$configured_native_system_header_dir
1529 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1530 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1534 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1535 gcc_cv_mcontext_underscores,
1537 #include <sys/cdefs.h>
1538 #include <sys/signal.h>
1539 #include <ucontext.h>
1540 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1542 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1543 if test $gcc_cv_mcontext_underscores = yes; then
1544 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1545 [mcontext_t fields start with __])
1554 # Check if a valid thread package
1555 case ${enable_threads} in
1558 target_thread_file='single'
1562 target_thread_file='single'
1564 aix | dce | lynx | mipssde | posix | rtems | \
1565 single | tpf | vxworks | win32)
1566 target_thread_file=${enable_threads}
1569 echo "${enable_threads} is an unknown thread package" 1>&2
1574 if test x${thread_file} = x; then
1575 # No thread file set by target-specific clauses in config.gcc,
1576 # so use file chosen by default logic above
1577 thread_file=${target_thread_file}
1585 if test x$enable___cxa_atexit = xyes || \
1586 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1587 if test x$host = x$target; then
1589 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1590 # keyed to flag_use_cxa_atexit
1598 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1599 [echo "__cxa_atexit can't be enabled on this target"])
1603 # We can't check for __cxa_atexit when building a cross, so assume
1607 if test x$use_cxa_atexit = xyes; then
1608 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1609 [Define if you want to use __cxa_atexit, rather than atexit, to
1610 register C++ destructors for local statics and global objects.
1611 This is essential for fully standards-compliant handling of
1612 destructors, but requires __cxa_atexit in libc.])
1616 # Look for a file containing extra machine modes.
1617 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1618 extra_modes_file='$(srcdir)'/config/${extra_modes}
1619 AC_SUBST(extra_modes_file)
1620 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1621 [Define to the name of a file containing a list of extra machine modes
1622 for this architecture.])
1625 # Convert extra_options into a form suitable for Makefile use.
1628 for f in $extra_options; do
1629 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1630 all_opt_files="$all_opt_files $srcdir/config/$f"
1632 AC_SUBST(extra_opt_files)
1634 # auto-host.h is the file containing items generated by autoconf and is
1635 # the first file included by config.h.
1636 # If host=build, it is correct to have bconfig include auto-host.h
1637 # as well. If host!=build, we are in error and need to do more
1638 # work to find out the build config parameters.
1639 if test x$host = x$build
1641 build_auto=auto-host.h
1643 # We create a subdir, then run autoconf in the subdir.
1644 # To prevent recursion we set host and build for the new
1645 # invocation of configure to the build for this invocation
1652 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1653 *) realsrcdir=../${srcdir};;
1655 # Clearing GMPINC is necessary to prevent host headers being
1656 # used by the build compiler. Defining GENERATOR_FILE stops
1657 # system.h from including gmp.h.
1658 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1659 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1660 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1661 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1662 ${realsrcdir}/configure \
1663 --enable-languages=${enable_languages-all} \
1664 --target=$target_alias --host=$build_alias --build=$build_alias
1666 # We just finished tests for the build machine, so rename
1667 # the file auto-build.h in the gcc directory.
1668 mv auto-host.h ../auto-build.h
1671 build_auto=auto-build.h
1673 AC_SUBST(build_subdir)
1675 tm_file="${tm_file} defaults.h"
1676 tm_p_file="${tm_p_file} tm-preds.h"
1677 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1678 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1679 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1680 # put this back in temporarily.
1681 xm_file="auto-host.h ansidecl.h ${xm_file}"
1688 # Compile in configure arguments.
1689 if test -f configargs.h ; then
1690 # Being re-configured.
1691 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1692 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1694 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1697 # Double all backslashes and backslash all quotes to turn
1698 # gcc_config_arguments into a C string.
1699 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1700 $gcc_config_arguments
1702 gcc_config_arguments_str=`cat conftest.out`
1705 cat > configargs.h <<EOF
1706 /* Generated automatically. */
1707 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1708 static const char thread_model[] = "$thread_file";
1710 static const struct {
1711 const char *name, *value;
1712 } configure_default_options[] = $configure_default_options;
1717 gcc_BASEVER=`cat $srcdir/BASE-VER`
1718 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1719 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1720 if test -f $srcdir/REVISION ; then
1721 gcc_REVISION=`cat $srcdir/REVISION`
1725 cat > plugin-version.h <<EOF
1726 #include "configargs.h"
1728 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1729 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1730 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1731 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1733 static char basever[] = "$gcc_BASEVER";
1734 static char datestamp[] = "$gcc_DATESTAMP";
1735 static char devphase[] = "$gcc_DEVPHASE";
1736 static char revision[] = "$gcc_REVISION";
1738 /* FIXME plugins: We should make the version information more precise.
1739 One way to do is to add a checksum. */
1741 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1743 configuration_arguments};
1747 # Internationalization
1748 ZW_GNU_GETTEXT_SISTER_DIR
1750 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1751 # -liconv on the link line twice.
1752 case "$LIBINTL" in *$LIBICONV*)
1756 AC_ARG_ENABLE(secureplt,
1757 [AS_HELP_STRING([--enable-secureplt],
1758 [enable -msecure-plt by default for PowerPC])],
1761 AC_ARG_ENABLE(leading-mingw64-underscores,
1762 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1763 [enable leading underscores on 64 bit mingw targets]),
1765 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1766 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1767 [Define if we should use leading underscore on 64 bit mingw targets])])
1770 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1773 AC_ARG_ENABLE(frame-pointer,
1774 [AS_HELP_STRING([--enable-frame-pointer],
1775 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1778 linux* | darwin[[8912]]*)
1779 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1781 enable_frame_pointer=no
1784 enable_frame_pointer=yes
1789 # Windows32 Registry support for specifying GCC installation paths.
1790 AC_ARG_ENABLE(win32-registry,
1791 [AS_HELP_STRING([--disable-win32-registry],
1792 [disable lookup of installation paths in the
1793 Registry on Windows hosts])
1794 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1795 AS_HELP_STRING([--enable-win32-registry=KEY],
1796 [use KEY instead of GCC version as the last portion
1797 of the registry key])],,)
1800 win32 | pe | cygwin* | mingw32*)
1801 if test "x$enable_win32_registry" != xno; then
1802 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1805 if test "x$enable_win32_registry" != xno; then
1806 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1807 [Define to 1 if installation paths should be looked up in the Windows
1808 Registry. Ignored on non-Windows hosts.])
1810 if test "x$enable_win32_registry" != xyes \
1811 && test "x$enable_win32_registry" != x; then
1812 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1813 [Define to be the last component of the Windows registry key under which
1814 to look for installation paths. The full key used will be
1815 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1816 The default is the GCC version number.])
1822 # Get an absolute path to the GCC top-level source directory
1823 holddir=`${PWDCMD-pwd}`
1825 topdir=`${PWDCMD-pwd}`
1828 # Conditionalize the makefile for this host machine.
1830 for f in ${host_xmake_file}
1832 if test -f ${srcdir}/config/$f
1834 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1838 # Conditionalize the makefile for this target machine.
1840 for f in ${tmake_file}
1842 if test -f ${srcdir}/config/$f
1844 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1847 tmake_file="${tmake_file_}"
1849 out_object_file=`basename $out_file .c`.o
1850 common_out_object_file=`basename $common_out_file .c`.o
1852 tm_file_list="options.h"
1853 tm_include_list="options.h insn-constants.h"
1854 for f in $tm_file; do
1857 f=`echo $f | sed 's/^..//'`
1858 tm_file_list="${tm_file_list} $f"
1859 tm_include_list="${tm_include_list} $f"
1862 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1863 tm_include_list="${tm_include_list} $f"
1866 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1867 tm_include_list="${tm_include_list} config/$f"
1874 for f in $tm_p_file; do
1877 tm_p_file_list="${tm_p_file_list} $f"
1878 tm_p_include_list="${tm_p_include_list} $f"
1881 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1882 tm_p_include_list="${tm_p_include_list} config/$f"
1888 for f in $xm_file; do
1891 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1892 xm_include_list="${xm_include_list} $f"
1895 xm_file_list="${xm_file_list} $f"
1896 xm_include_list="${xm_include_list} $f"
1899 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1900 xm_include_list="${xm_include_list} config/$f"
1906 host_xm_include_list=
1907 for f in $host_xm_file; do
1910 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1911 host_xm_include_list="${host_xm_include_list} $f"
1914 host_xm_file_list="${host_xm_file_list} $f"
1915 host_xm_include_list="${host_xm_include_list} $f"
1918 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1919 host_xm_include_list="${host_xm_include_list} config/$f"
1925 for f in $build_xm_file; do
1928 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1929 build_xm_include_list="${build_xm_include_list} $f"
1931 auto-build.h | auto-host.h )
1932 build_xm_file_list="${build_xm_file_list} $f"
1933 build_xm_include_list="${build_xm_include_list} $f"
1936 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1937 build_xm_include_list="${build_xm_include_list} config/$f"
1942 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1943 # cross-compiler which does not use the native headers and libraries.
1944 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1945 CROSS= AC_SUBST(CROSS)
1946 ALL=all.internal AC_SUBST(ALL)
1947 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1949 if test "x$with_build_sysroot" != x; then
1950 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1952 # This value is used, even on a native system, because
1953 # CROSS_SYSTEM_HEADER_DIR is just
1954 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1955 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1958 if test x$host != x$target
1960 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1962 SYSTEM_HEADER_DIR=$build_system_header_dir
1963 case "$host","$target" in
1964 # Darwin crosses can use the host system's libraries and headers,
1965 # because of the fat library support. Of course, it must be the
1966 # same version of Darwin on both sides. Allow the user to
1967 # just say --target=foo-darwin without a version number to mean
1968 # "the version on this system".
1969 *-*-darwin*,*-*-darwin*)
1970 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1971 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1972 if test $hostos = $targetos -o $targetos = darwin ; then
1974 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1979 i?86-*-*,x86_64-*-* \
1980 | powerpc*-*-*,powerpc64*-*-*)
1981 CROSS="$CROSS -DNATIVE_CROSS" ;;
1986 if test "x$with_headers" = x; then
1993 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1994 SYSTEM_HEADER_DIR=$build_system_header_dir
1997 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
1998 if test "x$with_headers" != x; then
1999 target_header_dir=$with_headers
2000 elif test "x$with_sysroot" = x; then
2001 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2002 elif test "x$with_build_sysroot" != "x"; then
2003 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2004 elif test "x$with_sysroot" = xyes; then
2005 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2007 target_header_dir="${with_sysroot}${native_system_header_dir}"
2010 target_header_dir=${native_system_header_dir}
2013 # If this is a cross-compiler that does not
2014 # have its own set of headers then define
2017 # If this is using newlib, without having the headers available now,
2018 # then define inhibit_libc in LIBGCC2_CFLAGS.
2019 # This prevents libgcc2 from containing any code which requires libc
2021 : ${inhibit_libc=false}
2022 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2023 test x$with_newlib = xyes ; } &&
2024 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2027 AC_SUBST(inhibit_libc)
2029 # When building gcc with a cross-compiler, we need to adjust things so
2030 # that the generator programs are still built with the native compiler.
2031 # Also, we cannot run fixincludes.
2033 # These are the normal (build=host) settings:
2034 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2035 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2036 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2037 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2038 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2039 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2041 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2042 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2044 # And these apply if build != host, or we are generating coverage data
2045 if test x$build != x$host || test "x$coverage_flags" != x
2047 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2048 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2049 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2051 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2052 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2053 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2054 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2056 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2057 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2059 # Expand extra_headers to include complete path.
2060 # This substitutes for lots of t-* files.
2062 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2063 for file in ${extra_headers} ; do
2064 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2067 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2068 if test x"$use_gcc_tgmath" = xyes
2069 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2072 # Define collect2 in Makefile.
2073 case $host_can_use_collect2 in
2075 *) collect2='collect2$(exeext)' ;;
2077 AC_SUBST([collect2])
2079 # Add a definition of USE_COLLECT2 if system wants one.
2080 case $use_collect2 in
2081 no) use_collect2= ;;
2084 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2085 xm_defines="${xm_defines} USE_COLLECT2"
2086 case $host_can_use_collect2 in
2088 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2094 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2095 [Define to the name of the LTO plugin DSO that must be
2096 passed to the linker's -plugin=LIB option.])
2098 # ---------------------------
2099 # Assembler & linker features
2100 # ---------------------------
2102 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2103 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2104 # However when ld-new is first executed from the build tree, libtool will
2105 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2106 # to the build tree. While doing this we need to use the previous-stage
2107 # linker, or we have an infinite loop. The presence of a shell script as
2108 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2109 # the gcc/collect-ld script. So we need to know how libtool works, or
2110 # exec-tool will fail.
2112 m4_defun([_LT_CONFIG_COMMANDS], [])
2115 AC_SUBST(enable_fast_install)
2117 # Identify the assembler which will work hand-in-glove with the newly
2118 # built GCC, so that we can examine its features. This is the assembler
2119 # which will be driven by the driver program.
2121 # If build != host, and we aren't building gas in-tree, we identify a
2122 # build->target assembler and hope that it will have the same features
2123 # as the host->target assembler we'll be using.
2124 gcc_cv_gas_major_version=
2125 gcc_cv_gas_minor_version=
2126 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2128 m4_pattern_allow([AS_FOR_TARGET])dnl
2129 AS_VAR_SET_IF(gcc_cv_as,, [
2130 if test -x "$DEFAULT_ASSEMBLER"; then
2131 gcc_cv_as="$DEFAULT_ASSEMBLER"
2132 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2133 && test -f ../gas/Makefile \
2134 && test x$build = x$host; then
2135 gcc_cv_as=../gas/as-new$build_exeext
2136 elif test -x as$build_exeext; then
2137 # Build using assembler in the current directory.
2138 gcc_cv_as=./as$build_exeext
2139 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2140 gcc_cv_as="$AS_FOR_TARGET"
2142 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2145 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2146 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2147 case "$ORIGINAL_AS_FOR_TARGET" in
2148 ./as | ./as$build_exeext) ;;
2149 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2152 AC_MSG_CHECKING(what assembler to use)
2153 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2154 # Single tree build which includes gas. We want to prefer it
2155 # over whatever linker top-level may have detected, since
2156 # we'll use what we're building after installation anyway.
2157 AC_MSG_RESULT(newly built gas)
2159 _gcc_COMPUTE_GAS_VERSION
2160 in_tree_gas_is_elf=no
2161 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2162 || (grep 'obj_format = multi' ../gas/Makefile \
2163 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2165 in_tree_gas_is_elf=yes
2168 AC_MSG_RESULT($gcc_cv_as)
2174 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2175 [case "${enableval}" in
2181 install_gold_as_default=no
2183 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2184 [case "${enableval}" in
2186 install_gold_as_default=yes
2189 if test x${default_ld} != x; then
2190 install_gold_as_default=yes
2196 AC_MSG_ERROR([invalid --enable-gold argument])
2200 # Identify the linker which will work hand-in-glove with the newly
2201 # built GCC, so that we can examine its features. This is the linker
2202 # which will be driven by the driver program.
2204 # If build != host, and we aren't building gas in-tree, we identify a
2205 # build->target linker and hope that it will have the same features
2206 # as the host->target linker we'll be using.
2207 gcc_cv_gld_major_version=
2208 gcc_cv_gld_minor_version=
2209 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2210 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2211 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2213 AS_VAR_SET_IF(gcc_cv_ld,, [
2214 if test -x "$DEFAULT_LINKER"; then
2215 gcc_cv_ld="$DEFAULT_LINKER"
2216 elif test $install_gold_as_default = yes \
2217 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2218 && test -f ../gold/Makefile \
2219 && test x$build = x$host; then
2220 gcc_cv_ld=../gold/ld-new$build_exeext
2221 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2222 && test -f ../ld/Makefile \
2223 && test x$build = x$host; then
2224 gcc_cv_ld=../ld/ld-new$build_exeext
2225 elif test -x collect-ld$build_exeext; then
2226 # Build using linker in the current directory.
2227 gcc_cv_ld=./collect-ld$build_exeext
2228 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2229 gcc_cv_ld="$LD_FOR_TARGET"
2231 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2234 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2235 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2236 # if the PLUGIN_LD is set ld-new, just have it as ld
2237 # as that is the installed named.
2238 if test x$PLUGIN_LD_SUFFIX = xld-new \
2239 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2242 AC_ARG_WITH(plugin-ld,
2243 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2244 [if test x"$withval" != x; then
2245 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2246 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2248 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2249 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2251 # Check to see if we are using gold instead of ld
2252 AC_MSG_CHECKING(whether we are using gold)
2254 if test x$gcc_cv_ld != x; then
2255 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2256 | grep "GNU gold" > /dev/null; then
2260 AC_MSG_RESULT($ld_is_gold)
2262 AC_MSG_CHECKING(gold linker with split stack support as non default)
2263 # Check to see if default ld is not gold, but gold is
2264 # available and has support for split stack. If gcc was configured
2265 # with gold then no checking is done.
2267 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2269 # For platforms other than powerpc64*, enable as appropriate.
2272 ld_gold=`which ${gcc_cv_ld}.gold`
2273 # Make sure this gold has minimal split stack support
2274 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2275 ld_vers=`$ld_gold --version | sed 1q`
2276 gold_vers=`echo $ld_vers | sed -n \
2277 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2279 # check that the gold version contains the complete split stack support
2280 # on powerpc64 big and little endian
2282 case "$gold_vers" in
2283 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2285 *) gold_non_default=no
2291 if test $gold_non_default = yes; then
2292 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2293 [Define if the gold linker supports split stack and is available as a non-default])
2296 AC_MSG_RESULT($gold_non_default)
2298 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2299 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2300 case "$ORIGINAL_LD_FOR_TARGET" in
2301 ./collect-ld | ./collect-ld$build_exeext) ;;
2302 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2305 AC_MSG_CHECKING(what linker to use)
2306 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2307 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2308 # Single tree build which includes ld. We want to prefer it
2309 # over whatever linker top-level may have detected, since
2310 # we'll use what we're building after installation anyway.
2311 AC_MSG_RESULT(newly built ld)
2313 in_tree_ld_is_elf=no
2314 if (grep 'EMUL = .*elf' ../ld/Makefile \
2315 || grep 'EMUL = .*linux' ../ld/Makefile \
2316 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2317 in_tree_ld_is_elf=yes
2318 elif test "$ld_is_gold" = yes; then
2319 in_tree_ld_is_elf=yes
2321 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
2324 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2325 if test x$gcc_cv_gld_version != x; then
2329 case $gcc_cv_gld_version in
2332 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2335 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2336 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2338 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2339 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2341 AC_MSG_RESULT($gcc_cv_ld)
2343 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2344 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2345 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2348 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2349 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2351 # Figure out what nm we will be using.
2352 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2353 AS_VAR_SET_IF(gcc_cv_nm,, [
2354 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2355 && test -f ../binutils/Makefile \
2356 && test x$build = x$host; then
2357 gcc_cv_nm=../binutils/nm-new$build_exeext
2358 elif test -x nm$build_exeext; then
2359 gcc_cv_nm=./nm$build_exeext
2360 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2361 gcc_cv_nm="$NM_FOR_TARGET"
2363 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2366 AC_MSG_CHECKING(what nm to use)
2367 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2368 # Single tree build which includes binutils.
2369 AC_MSG_RESULT(newly built nm)
2372 AC_MSG_RESULT($gcc_cv_nm)
2376 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2377 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2378 case "$ORIGINAL_NM_FOR_TARGET" in
2379 ./nm | ./nm$build_exeext) ;;
2380 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2384 # Figure out what objdump we will be using.
2385 AS_VAR_SET_IF(gcc_cv_objdump,, [
2386 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2387 && test -f ../binutils/Makefile \
2388 && test x$build = x$host; then
2389 # Single tree build which includes binutils.
2390 gcc_cv_objdump=../binutils/objdump$build_exeext
2391 elif test -x objdump$build_exeext; then
2392 gcc_cv_objdump=./objdump$build_exeext
2393 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2394 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2396 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2399 AC_MSG_CHECKING(what objdump to use)
2400 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2401 # Single tree build which includes binutils.
2402 AC_MSG_RESULT(newly built objdump)
2403 elif test x$gcc_cv_objdump = x; then
2404 AC_MSG_RESULT(not found)
2406 AC_MSG_RESULT($gcc_cv_objdump)
2409 # Figure out what readelf we will be using.
2410 AS_VAR_SET_IF(gcc_cv_readelf,, [
2411 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2412 && test -f ../binutils/Makefile \
2413 && test x$build = x$host; then
2414 # Single tree build which includes binutils.
2415 gcc_cv_readelf=../binutils/readelf$build_exeext
2416 elif test -x readelf$build_exeext; then
2417 gcc_cv_readelf=./readelf$build_exeext
2418 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2419 gcc_cv_readelf="$READELF_FOR_TARGET"
2421 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2424 AC_MSG_CHECKING(what readelf to use)
2425 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2426 # Single tree build which includes binutils.
2427 AC_MSG_RESULT(newly built readelf)
2428 elif test x$gcc_cv_readelf = x; then
2429 AC_MSG_RESULT(not found)
2431 AC_MSG_RESULT($gcc_cv_readelf)
2434 # Figure out what assembler alignment features are present.
2435 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2439 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2440 [Define if your assembler supports .balign and .p2align.])])
2442 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2445 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2446 [Define if your assembler supports specifying the maximum number
2447 of bytes to skip when using the GAS .p2align command.])])
2449 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2452 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2453 [Define if your assembler supports .literal16.])])
2455 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2457 [conftest_label1: .word 0
2459 conftest_label2: .word 0
2461 [if test x$gcc_cv_nm != x; then
2462 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2463 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2464 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2466 else gcc_cv_as_subsection_m1=yes
2468 rm -f conftest.nm1 conftest.nm2
2470 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2471 [Define if your assembler supports .subsection and .subsection -1 starts
2472 emitting at the beginning of your section.])])
2474 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2477 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2479 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2481 [ .weakref foobar, barfnot],,
2482 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2484 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2487 .NSUBSPA $CODE$,COMDAT],,
2488 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2490 # .hidden needs to be supported in both the assembler and the linker,
2491 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2492 # This is irritatingly difficult to feature test for; we have to check the
2493 # date string after the version number. If we've got an in-tree
2494 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2496 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2497 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2503 # Darwin as has some visibility support, though with a different syntax.
2504 gcc_cv_as_hidden=yes
2508 # gnu_indirect_function type is an extension proposed at
2509 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2510 # selection of function implementation
2511 AC_ARG_ENABLE(gnu-indirect-function,
2512 [AS_HELP_STRING([--enable-gnu-indirect-function],
2513 [enable the use of the @gnu_indirect_function to glibc systems])],
2514 [case $enable_gnu_indirect_function in
2516 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2517 Valid choices are 'yes' and 'no'.]) ;;
2519 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2521 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2522 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2523 [Define if your system supports gnu indirect functions.])
2527 if test $in_tree_ld != yes ; then
2528 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2529 if echo "$ld_ver" | grep GNU > /dev/null; then
2530 if test x"$ld_is_gold" = xyes; then
2531 # GNU gold --version looks like this:
2533 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2535 # We extract the binutils version which is more familiar and specific
2536 # than the gold version.
2537 ld_vers=`echo $ld_ver | sed -n \
2538 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2540 # GNU ld --version looks like this:
2542 # GNU ld (GNU Binutils) 2.21.51.20110225
2543 ld_vers=`echo $ld_ver | sed -n \
2544 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2546 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2547 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2548 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2549 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2553 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2556 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2557 # /usr/ccs/bin/ld has been configured.
2558 ld_ver=`$gcc_cv_ld -V 2>&1`
2559 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2560 ld_vers=`echo $ld_ver | sed -n \
2561 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2562 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2563 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2571 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2572 [[if test $in_tree_ld = yes ; then
2574 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2575 && test $in_tree_ld_is_elf = yes; then
2576 gcc_cv_ld_hidden=yes
2579 gcc_cv_ld_hidden=yes
2580 if test x"$ld_is_gold" = xyes; then
2582 elif echo "$ld_ver" | grep GNU > /dev/null; then
2584 mmix-knuth-mmixware)
2585 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2589 if test 0"$ld_date" -lt 20020404; then
2590 if test -n "$ld_date"; then
2591 # If there was date string, but was earlier than 2002-04-04, fail
2593 elif test -z "$ld_vers"; then
2594 # If there was no date string nor ld version number, something is wrong
2597 test -z "$ld_vers_patch" && ld_vers_patch=0
2598 if test "$ld_vers_major" -lt 2; then
2600 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2601 gcc_cv_ld_hidden="no"
2602 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2610 # Darwin ld has some visibility support.
2611 gcc_cv_ld_hidden=yes
2613 hppa64*-*-hpux* | ia64*-*-hpux*)
2614 gcc_cv_ld_hidden=yes
2616 *-*-solaris2.1[0-9]*)
2617 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2618 # .symbolic was only added in Solaris 9 12/02.
2619 gcc_cv_ld_hidden=yes
2627 libgcc_visibility=no
2628 AC_SUBST(libgcc_visibility)
2629 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2630 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2631 libgcc_visibility=yes
2632 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2633 [Define if your assembler and linker support .hidden.])
2636 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2637 gcc_cv_ld_ro_rw_mix=unknown
2638 if test $in_tree_ld = yes ; then
2639 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2640 && test $in_tree_ld_is_elf = yes; then
2641 gcc_cv_ld_ro_rw_mix=read-write
2643 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2644 echo '.section myfoosect, "a"' > conftest1.s
2645 echo '.section myfoosect, "aw"' > conftest2.s
2646 echo '.byte 1' >> conftest2.s
2647 echo '.section myfoosect, "a"' > conftest3.s
2648 echo '.byte 0' >> conftest3.s
2649 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2650 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2651 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2652 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2653 conftest2.o conftest3.o > /dev/null 2>&1; then
2654 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2655 | sed -e '/myfoosect/!d' -e N`
2656 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2657 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2658 gcc_cv_ld_ro_rw_mix=read-only
2660 gcc_cv_ld_ro_rw_mix=read-write
2665 rm -f conftest.* conftest[123].*
2668 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2669 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2670 [Define if your linker links a mix of read-only
2671 and read-write sections into a read-write section.])
2673 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2675 gcc_AC_INITFINI_ARRAY
2677 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2678 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2686 [[# GAS versions before 2.11 do not support uleb128,
2687 # despite appearing to.
2688 # ??? There exists an elf-specific test that will crash
2689 # the assembler. Perhaps it's better to figure out whether
2690 # arbitrary sections are supported and try the test.
2691 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2692 if echo "$as_ver" | grep GNU > /dev/null; then
2693 as_vers=`echo $as_ver | sed -n \
2694 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2695 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2696 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2697 if test $as_major -eq 2 && test $as_minor -lt 11
2699 else gcc_cv_as_leb128=yes
2702 [AC_DEFINE(HAVE_AS_LEB128, 1,
2703 [Define if your assembler supports .sleb128 and .uleb128.])])
2705 # Check if we have assembler support for unwind directives.
2706 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2713 .cfi_escape 1, 2, 3, 4, 5
2717 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2718 # read-only and read-write sections, we need to make sure that the
2719 # assembler used emits read-write .eh_frame sections.
2720 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2721 if test "x$gcc_cv_objdump" != x; then
2722 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2723 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2724 gcc_cv_as_cfi_directive=no
2727 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2728 # On Solaris/x86, make sure that GCC and assembler agree on using
2729 # read-only .eh_frame sections for 64-bit.
2730 if test x$gas = xyes; then
2731 as_ix86_64_opt="--64"
2733 as_ix86_64_opt="-xarch=amd64"
2735 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2736 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2737 sed -e /.eh_frame/!d -e N | \
2738 grep READONLY > /dev/null; then
2739 gcc_cv_as_cfi_directive=yes
2741 gcc_cv_as_cfi_directive=no
2745 gcc_cv_as_cfi_directive=yes
2750 # no objdump, err on the side of caution
2751 gcc_cv_as_cfi_directive=no
2754 gcc_cv_as_cfi_directive=yes
2758 gcc_cv_as_cfi_directive=yes
2761 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2762 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2766 .cfi_adjust_cfa_offset 64
2768 .cfi_adjust_cfa_offset 128
2771 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2772 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2773 gcc_cv_as_cfi_advance_working=yes
2777 # no objdump, err on the side of caution
2778 gcc_cv_as_cfi_advance_working=no
2780 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2781 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2782 [`if test $gcc_cv_as_cfi_directive = yes \
2783 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2784 [Define 0/1 if your assembler supports CFI directives.])
2786 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2787 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2788 gcc_cv_as_cfi_personality_directive, ,,
2791 .cfi_personality 0, symbol
2793 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2794 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2795 then echo 1; else echo 0; fi`],
2796 [Define 0/1 if your assembler supports .cfi_personality.])
2798 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2799 gcc_cv_as_cfi_sections_directive, ,,
2801 .cfi_sections .debug_frame, .eh_frame
2805 win32 | pe | cygwin* | mingw32*)
2806 # Need to check that we generated the correct relocation for the
2807 # .debug_frame section. This was fixed for binutils 2.21.
2808 gcc_cv_as_cfi_sections_directive=no
2809 if test "x$gcc_cv_objdump" != x; then
2810 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2811 grep secrel > /dev/null; then
2812 gcc_cv_as_cfi_sections_directive=yes
2817 gcc_cv_as_cfi_sections_directive=yes
2820 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2821 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2822 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2823 then echo 1; else echo 0; fi`],
2824 [Define 0/1 if your assembler supports .cfi_sections.])
2826 # GAS versions up to and including 2.11.0 may mis-optimize
2828 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2836 .section .eh_frame,"aw",@progbits
2838 .4byte .LECIE1-.LSCIE1
2852 .4byte .LEFDE1-.LASFDE1
2854 .4byte .LASFDE1-__FRAME_BEGIN__
2862 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2863 cat > conftest.lit <<EOF
2864 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2865 0010 01000000 12000000 18000000 00000000 ................
2866 0020 08000000 04080000 0044 .........D @&t@
2868 cat > conftest.big <<EOF
2869 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2870 0010 00000001 00000012 00000018 00000000 ................
2871 0020 00000008 04000000 0844 .........D @&t@
2873 # If the assembler didn't choke, and we can objdump,
2874 # and we got the correct data, then succeed.
2875 # The text in the here-document typically retains its unix-style line
2876 # endings, while the output of objdump will use host line endings.
2877 # Therefore, use diff -b for the comparisons.
2878 if test x$gcc_cv_objdump != x \
2879 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2880 | tail -3 > conftest.got \
2881 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2882 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2884 gcc_cv_as_eh_frame=yes
2885 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2886 gcc_cv_as_eh_frame=buggy
2888 # Uh oh, what do we do now?
2889 gcc_cv_as_eh_frame=no
2892 if test $gcc_cv_as_eh_frame = buggy; then
2893 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2894 [Define if your assembler mis-optimizes .eh_frame data.])
2897 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2898 [elf,2,12,0], [--fatal-warnings],
2899 [.section .rodata.str, "aMS", @progbits, 1])
2900 if test $gcc_cv_as_shf_merge = no; then
2901 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2902 [elf,2,12,0], [--fatal-warnings],
2903 [.section .rodata.str, "aMS", %progbits, 1])
2905 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2906 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2907 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2909 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2910 gcc_cv_as_comdat_group,
2911 [elf,2,16,0], [--fatal-warnings],
2912 [.section .text,"axG",@progbits,.foo,comdat])
2913 if test $gcc_cv_as_comdat_group = yes; then
2914 gcc_cv_as_comdat_group_percent=no
2915 gcc_cv_as_comdat_group_group=no
2917 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2918 gcc_cv_as_comdat_group_percent,
2919 [elf,2,16,0], [--fatal-warnings],
2920 [.section .text,"axG",%progbits,.foo,comdat])
2921 if test $gcc_cv_as_comdat_group_percent = yes; then
2922 gcc_cv_as_comdat_group_group=no
2925 # Sun as uses a completely different syntax.
2930 .group foo,".text%foo",#comdat
2931 .section ".text%foo", #alloc,#execinstr,#progbits
2936 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2938 .group foo,.text%foo,#comdat
2939 .section .text%foo, "ax", @progbits
2945 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2946 gcc_cv_as_comdat_group_group,
2950 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2951 gcc_cv_as_comdat_group_group=no
2955 if test x"$ld_is_gold" = xyes; then
2957 elif test $in_tree_ld = yes ; then
2959 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2960 && test $in_tree_ld_is_elf = yes; then
2963 elif echo "$ld_ver" | grep GNU > /dev/null; then
2965 if test 0"$ld_date" -lt 20050308; then
2966 if test -n "$ld_date"; then
2967 # If there was date string, but was earlier than 2005-03-08, fail
2969 elif test "$ld_vers_major" -lt 2; then
2971 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2978 *-*-solaris2.1[1-9]*)
2980 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2981 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2984 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2985 # least ld version 1.2267.
2986 if test "$ld_vers_major" -gt 1; then
2988 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2990 elif test "$ld_vers_minor" -ge 2267; then
2995 # Assume linkers other than GNU ld don't support COMDAT group.
3001 # Allow overriding the automatic COMDAT group tests above.
3002 AC_ARG_ENABLE(comdat,
3003 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3004 [comdat_group="$enable_comdat"])
3005 if test $comdat_group = no; then
3006 gcc_cv_as_comdat_group=no
3007 gcc_cv_as_comdat_group_percent=no
3008 gcc_cv_as_comdat_group_group=no
3010 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3011 [`if test $gcc_cv_as_comdat_group = yes \
3012 || test $gcc_cv_as_comdat_group_percent = yes \
3013 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3014 [Define 0/1 if your assembler and linker support COMDAT groups.])
3016 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3017 gcc_cv_as_discriminator,
3021 .loc 1 1 0 discriminator 1],,
3022 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3023 [Define if your assembler supports the .loc discriminator sub-directive.])])
3025 # Thread-local storage - the check is heavily parameterized.
3034 .section ".tdata","awT",@progbits
3037 ldq $27,__tls_get_addr($29) !literal!1
3038 lda $16,foo($29) !tlsgd!1
3039 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3040 ldq $27,__tls_get_addr($29) !literal!2
3041 lda $16,foo($29) !tlsldm!2
3042 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3043 ldq $1,foo($29) !gotdtprel
3044 ldah $2,foo($29) !dtprelhi
3045 lda $3,foo($2) !dtprello
3046 lda $4,foo($29) !dtprel
3047 ldq $1,foo($29) !gottprel
3048 ldah $2,foo($29) !tprelhi
3049 lda $3,foo($2) !tprello
3050 lda $4,foo($29) !tprel'
3053 tls_as_opt=--fatal-warnings
3055 cris-*-*|crisv32-*-*)
3057 .section ".tdata","awT",@progbits
3064 tls_as_opt=--fatal-warnings
3068 .section ".tdata","awT",@progbits
3080 .section ".tdata","awT",@progbits
3084 addil LT%foo-$tls_gdidx$,gp
3085 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3088 addil LT%foo-$tls_ldidx$,gp
3090 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3091 addil LR%foo-$tls_dtpoff$,%ret0
3092 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3094 addil LT%foo-$tls_ieoff$,gp
3095 ldw RT%foo-$tls_ieoff$(%r1),%t2
3098 addil LR%foo-$tls_leoff$,%t1
3099 ldo RR%foo-$tls_leoff$(%r1),%t2'
3102 tls_as_opt=--fatal-warnings
3106 .section ".tdata","awT",%progbits
3117 i[34567]86-*-* | x86_64-*-*)
3119 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3126 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3128 .section .tdata,"awt",@progbits'
3133 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3134 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3138 .section ".tdata","awT",@progbits'
3142 tls_as_opt="--fatal-warnings"
3146 conftest_s="$conftest_s
3150 leal foo@tlsgd(,%ebx,1), %eax
3151 leal foo@tlsldm(%ebx), %eax
3152 leal foo@dtpoff(%eax), %edx
3153 movl foo@gottpoff(%ebx), %eax
3154 subl foo@gottpoff(%ebx), %eax
3155 addl foo@gotntpoff(%ebx), %eax
3156 movl foo@indntpoff, %eax
3157 movl \$foo@tpoff, %eax
3158 subl \$foo@tpoff, %eax
3159 leal foo@ntpoff(%ecx), %eax"
3162 if test x$on_solaris = xyes; then
3164 yes) tls_as_opt="$tls_as_opt --64" ;;
3165 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3168 conftest_s="$conftest_s
3172 leaq foo@tlsgd(%rip), %rdi
3173 leaq foo@tlsld(%rip), %rdi
3174 leaq foo@dtpoff(%rax), %rdx
3175 movq foo@gottpoff(%rip), %rax
3176 movq \$foo@tpoff, %rax"
3182 .section ".tdata","awT",@progbits
3185 addl r16 = @ltoff(@dtpmod(foo#)), gp
3186 addl r17 = @ltoff(@dtprel(foo#)), gp
3187 addl r18 = @ltoff(@tprel(foo#)), gp
3188 addl r19 = @dtprel(foo#), gp
3189 adds r21 = @dtprel(foo#), r13
3190 movl r23 = @dtprel(foo#)
3191 addl r20 = @tprel(foo#), gp
3192 adds r22 = @tprel(foo#), r13
3193 movl r24 = @tprel(foo#)'
3196 tls_as_opt=--fatal-warnings
3200 .section .tdata,"awT",@progbits
3204 addik r5,r20,x@TLSGD
3205 addik r5,r20,x@TLSLDM'
3208 tls_as_opt='--fatal-warnings'
3212 .section .tdata,"awT",@progbits
3216 addiu $4, $28, %tlsgd(x)
3217 addiu $4, $28, %tlsldm(x)
3218 lui $4, %dtprel_hi(x)
3219 addiu $4, $4, %dtprel_lo(x)
3220 lw $4, %gottprel(x)($28)
3221 lui $4, %tprel_hi(x)
3222 addiu $4, $4, %tprel_lo(x)'
3225 tls_as_opt='-32 --fatal-warnings'
3229 .section .tdata,"awT",@progbits
3234 move.l x@TLSGD(%a5),%a0
3235 move.l x@TLSLDM(%a5),%a0
3236 move.l x@TLSLDO(%a5),%a0
3237 move.l x@TLSIE(%a5),%a0
3238 move.l x@TLSLE(%a5),%a0'
3241 tls_as_opt='--fatal-warnings'
3245 .section ".tdata","awT",@progbits'
3248 tls_as_opt="--fatal-warnings"
3252 .section ".tdata","awT",%progbits
3256 add x0, x0, #:tlsgd_lo12:x
3261 tls_as_opt='--fatal-warnings'
3265 .extern __get_tpointer
3283 .section ".tdata","awT",@progbits
3291 addi 3,2,ld0@got@tlsgd
3297 addi 3,2,x1@got@tlsld
3303 addis 9,3,x2@dtprel@ha
3304 addi 9,9,x2@dtprel@l
3307 ld 9,x3@got@dtprel(2)
3313 tls_as_opt="-a64 --fatal-warnings"
3317 .section ".tdata","awT",@progbits
3325 addi 3,31,ld0@got@tlsgd
3327 addi 3,31,x1@got@tlsld
3330 addis 9,3,x2@dtprel@ha
3331 addi 9,9,x2@dtprel@l
3332 lwz 9,x3@got@tprel(31)
3335 addis 9,2,x2@tprel@ha
3336 addi 9,9,x2@tprel@l'
3339 tls_as_opt="-a32 --fatal-warnings"
3343 .section ".tdata","awT",@progbits
3352 l %r1,foo@GOTNTPOFF(%r12)
3353 l %r1,0(%r1):tls_load:foo
3354 bas %r14,0(%r1,%r13):tls_gdcall:foo
3355 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3358 tls_as_opt="-m31 --fatal-warnings"
3362 .section ".tdata","awT",@progbits
3370 lg %r1,foo@GOTNTPOFF(%r12)
3371 larl %r1,foo@INDNTPOFF
3372 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3373 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3376 tls_as_opt="-m64 -Aesame --fatal-warnings"
3378 sh-*-* | sh[123456789lbe]*-*-*)
3380 .section ".tdata","awT",@progbits
3390 tls_as_opt=--fatal-warnings
3394 sparc*-sun-solaris2.*)
3401 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3403 .section ".tdata",#alloc,#write,#tls'
3408 .section ".tdata","awT",@progbits'
3411 tls_as_opt="-32 --fatal-warnings"
3413 conftest_s="$conftest_s
3416 sethi %tgd_hi22(foo), %o0
3417 add %o0, %tgd_lo10(foo), %o1
3418 add %l7, %o1, %o0, %tgd_add(foo)
3419 call __tls_get_addr, %tgd_call(foo)
3420 sethi %tldm_hi22(foo), %l1
3421 add %l1, %tldm_lo10(foo), %l2
3422 add %l7, %l2, %o0, %tldm_add(foo)
3423 call __tls_get_addr, %tldm_call(foo)
3424 sethi %tldo_hix22(foo), %l3
3425 xor %l3, %tldo_lox10(foo), %l4
3426 add %o0, %l4, %l5, %tldo_add(foo)
3427 sethi %tie_hi22(foo), %o3
3428 add %o3, %tie_lo10(foo), %o3
3429 ld [%l7 + %o3], %o2, %tie_ld(foo)
3430 add %g7, %o2, %o4, %tie_add(foo)
3431 sethi %tle_hix22(foo), %l1
3432 xor %l1, %tle_lox10(foo), %o5
3433 ld [%g7 + %o5], %o1"
3437 .section ".tdata","awT",@progbits
3440 addli r0, zero, tls_gd(foo)
3441 auli r0, zero, tls_gd_ha16(foo)
3442 addli r0, r0, tls_gd_lo16(foo)
3444 addli r0, zero, tls_ie(foo)
3445 auli r0, r0, tls_ie_ha16(foo)
3446 addli r0, r0, tls_ie_lo16(foo)'
3449 tls_as_opt="--fatal-warnings"
3453 .section ".tdata","awT",@progbits
3456 shl16insli r0, zero, hw0_last_tls_gd(foo)
3457 shl16insli r0, zero, hw1_last_tls_gd(foo)
3458 shl16insli r0, r0, hw0_tls_gd(foo)
3460 shl16insli r0, zero, hw1_last_tls_ie(foo)
3461 shl16insli r0, r0, hw0_tls_ie(foo)'
3464 tls_as_opt="--fatal-warnings"
3468 .section ".tdata","awT",@progbits
3471 movi a8, foo@TLSFUNC
3472 movi a10, foo@TLSARG
3473 callx8.tls a8, foo@TLSCALL'
3480 if test "x$enable_tls" = xno ; then
3481 : # TLS explicitly disabled.
3482 elif test "x$enable_tls" = xyes ; then
3483 set_have_as_tls=yes # TLS explicitly enabled.
3484 elif test -z "$tls_first_major"; then
3485 : # If we don't have a check, assume no support.
3487 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3488 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3489 [set_have_as_tls=yes])
3491 if test $set_have_as_tls = yes ; then
3492 AC_DEFINE(HAVE_AS_TLS, 1,
3493 [Define if your assembler and linker support thread-local storage.])
3496 # Target-specific assembler checks.
3498 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3499 gcc_cv_ld_static_dynamic=no
3500 gcc_cv_ld_static_option='-Bstatic'
3501 gcc_cv_ld_dynamic_option='-Bdynamic'
3502 if test $in_tree_ld = yes ; then
3503 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3504 gcc_cv_ld_static_dynamic=yes
3506 elif test x$gcc_cv_ld != x; then
3507 # Check if linker supports -Bstatic/-Bdynamic option
3508 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3509 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3510 gcc_cv_ld_static_dynamic=yes
3513 # AIX ld uses -b flags
3514 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3515 gcc_cv_ld_static_dynamic=yes
3516 gcc_cv_ld_static_option="-bstatic"
3517 gcc_cv_ld_dynamic_option="-bdynamic"
3519 # HP-UX ld uses -a flags to select between shared and archive.
3521 if test x"$gnu_ld" = xno; then
3522 gcc_cv_ld_static_dynamic=yes
3523 gcc_cv_ld_static_option="-aarchive_shared"
3524 gcc_cv_ld_dynamic_option="-adefault"
3527 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3529 gcc_cv_ld_static_dynamic=yes
3534 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3535 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3536 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3537 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3538 [Define to the linker option to disable use of shared objects.])
3539 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3540 [Define to the linker option to enable use of shared objects.])
3542 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3544 if test x"$demangler_in_ld" = xyes; then
3545 AC_MSG_CHECKING(linker --demangle support)
3546 gcc_cv_ld_demangle=no
3547 if test $in_tree_ld = yes; then
3548 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3549 gcc_cv_ld_demangle=yes
3551 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3552 # Check if the GNU linker supports --demangle option
3553 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3554 gcc_cv_ld_demangle=yes
3557 if test x"$gcc_cv_ld_demangle" = xyes; then
3558 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3559 [Define if your linker supports --demangle option.])
3561 AC_MSG_RESULT($gcc_cv_ld_demangle)
3564 AC_MSG_CHECKING(linker plugin support)
3566 if test -f liblto_plugin.la; then
3567 save_ld_ver="$ld_ver"
3568 save_ld_vers_major="$ld_vers_major"
3569 save_ld_vers_minor="$ld_vers_minor"
3570 save_ld_is_gold="$ld_is_gold"
3574 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3576 # FIXME: ld_is_gold?
3577 ld_vers_major="$gcc_cv_gld_major_version"
3578 ld_vers_minor="$gcc_cv_gld_minor_version"
3580 # Determine plugin linker version.
3581 # FIXME: Partial duplicate from above, generalize.
3583 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3584 if echo "$ld_ver" | grep GNU > /dev/null; then
3585 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3587 ld_vers=`echo $ld_ver | sed -n \
3588 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3590 ld_vers=`echo $ld_ver | sed -n \
3591 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3593 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3594 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3599 # Determine plugin support.
3600 if echo "$ld_ver" | grep GNU > /dev/null; then
3601 # Require GNU ld or gold 2.21+ for plugin support by default.
3602 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3604 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3605 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3610 ld_ver="$save_ld_ver"
3611 ld_vers_major="$save_ld_vers_major"
3612 ld_vers_minor="$save_ld_vers_minor"
3613 ld_is_gold="$save_ld_is_gold"
3615 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3616 [Define to the level of your linker's plugin support.])
3617 AC_MSG_RESULT($gcc_cv_lto_plugin)
3621 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3622 [-mabi=lp64], [.text],,,)
3623 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3624 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3625 [Define if your assembler supports the -mabi option.])
3627 if test x$with_abi = xilp32; then
3628 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3629 Upgrade the Assembler.])
3631 if test x"$with_multilib_list" = xdefault; then
3632 TM_MULTILIB_CONFIG=lp64
3634 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3635 for aarch64_multilib in ${aarch64_multilibs}; do
3636 case ${aarch64_multilib} in
3638 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3639 Upgrade the Assembler.])
3647 # Check if we have binutils support for relocations types needed by -fpic
3648 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3651 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3652 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3653 [Define if your assembler supports relocs needed by -fpic.])])
3654 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3655 AC_ARG_ENABLE(fix-cortex-a53-835769,
3657 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3658 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3659 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3660 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3665 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3670 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3671 Valid choices are 'yes' and 'no'.])
3677 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3678 AC_ARG_ENABLE(fix-cortex-a53-843419,
3680 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3681 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3682 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3683 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3688 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3693 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3694 Valid choices are 'yes' and 'no'.])
3702 # All TARGET_ABI_OSF targets.
3703 alpha*-*-linux* | alpha*-*-*bsd*)
3704 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3705 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3708 extbl $3, $2, $3 !lituse_bytoff!1
3709 ldq $2, a($29) !literal!1
3710 ldq $4, b($29) !literal!2
3711 ldq_u $3, 0($2) !lituse_base!1
3712 ldq $27, f($29) !literal!5
3713 jsr $26, ($27), f !lituse_jsr!5
3714 ldah $29, 0($26) !gpdisp!3
3715 lda $0, c($29) !gprel
3716 ldah $1, d($29) !gprelhigh
3717 lda $1, d($1) !gprellow
3718 lda $29, 0($29) !gpdisp!3],,
3719 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3720 [Define if your assembler supports explicit relocations.])])
3721 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3722 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3725 ldq $27, a($29) !literal!1
3726 jsr $26, ($27), a !lituse_jsrdirect!1],,
3727 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3728 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3732 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3733 [--mlink-relax], [.text],,
3734 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3735 [Define if your avr assembler supports --mlink-relax option.])])
3737 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3739 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3740 [Define if your avr assembler supports -mrmw option.])])
3744 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3745 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3746 [-no-mul-bug-abort], [.text],,
3747 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3748 [Define if your assembler supports the -no-mul-bug-abort option.])])
3752 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3753 [.register %g2, #scratch],,
3754 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3755 [Define if your assembler supports .register.])])
3757 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3759 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3760 [Define if your assembler supports -relax option.])])
3762 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3763 gcc_cv_as_sparc_gotdata_op,,
3770 sethi %gdop_hix22(foo), %g1
3771 xor %g1, %gdop_lox10(foo), %g1
3772 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3773 [if test x$gcc_cv_ld != x \
3774 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3775 if test x$gcc_cv_objdump != x; then
3776 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3777 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3778 gcc_cv_as_sparc_gotdata_op=no
3780 gcc_cv_as_sparc_gotdata_op=yes
3785 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3786 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3788 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3789 gcc_cv_as_sparc_ua_pcrel,,
3797 .uaword %r_disp32(foo)],
3798 [if test x$gcc_cv_ld != x \
3799 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3800 gcc_cv_as_sparc_ua_pcrel=yes
3803 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3804 [Define if your assembler and linker support unaligned PC relative relocs.])
3806 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3807 gcc_cv_as_sparc_ua_pcrel_hidden,,
3812 .uaword %r_disp32(foo)
3813 .byte 0x32, 0x33, 0x34
3818 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3819 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3820 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3821 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3822 if $gcc_cv_objdump -R conftest 2> /dev/null \
3823 | grep 'DISP32' > /dev/null 2>&1; then
3826 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3830 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3831 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3832 ]) # unaligned pcrel relocs
3834 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3835 gcc_cv_as_sparc_offsetable_lo10,,
3838 or %g1, %lo(ab) + 12, %g1
3839 or %g1, %lo(ab + 12), %g1],
3840 [if test x$gcc_cv_objdump != x \
3841 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3842 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3843 gcc_cv_as_sparc_offsetable_lo10=yes
3845 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3846 [Define if your assembler supports offsetable %lo().])])
3848 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3849 gcc_cv_as_sparc_fmaf,,
3852 .register %g2, #scratch
3853 .register %g3, #scratch
3855 fmaddd %f0, %f2, %f4, %f6
3856 addxccc %g1, %g2, %g3
3857 fsrl32 %f2, %f4, %f8
3858 fnaddd %f10, %f12, %f14],,
3859 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3860 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3862 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3863 gcc_cv_as_sparc_sparc4,,
3866 .register %g2, #scratch
3867 .register %g3, #scratch
3870 1: cwbneg %g2, %g3, 1f
3873 aes_kexpand0 %f4, %f6, %f8
3874 des_round %f38, %f40, %f42, %f44
3875 camellia_f %f54, %f56, %f58, %f60
3876 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3877 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3878 [Define if your assembler supports SPARC4 instructions.])])
3880 gcc_GAS_CHECK_FEATURE([LEON instructions],
3881 gcc_cv_as_sparc_leon,,
3884 .register %g2, #scratch
3885 .register %g3, #scratch
3889 casa [[%g2]] 0xb, %g3, %g1],,
3890 [AC_DEFINE(HAVE_AS_LEON, 1,
3891 [Define if your assembler supports LEON instructions.])])
3895 i[34567]86-*-* | x86_64-*-*)
3899 # Full C++ conformance when using a shared libstdc++-v3 requires some
3900 # support from the Cygwin DLL, which in more recent versions exports
3901 # wrappers to aid in interposing and redirecting operators new, delete,
3902 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3903 # are configuring for a version of Cygwin that exports the wrappers.
3904 if test x$host = x$target && test x$host_cpu = xi686; then
3905 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3907 # Can't check presence of libc functions during cross-compile, so
3908 # we just have to assume we're building for an up-to-date target.
3909 gcc_ac_cygwin_dll_wrappers=yes
3911 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3912 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3913 [Define if you want to generate code by default that assumes that the
3914 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3917 cygwin* | pe | mingw32* | interix*)
3918 # Recent binutils allows the three-operand form of ".comm" on PE. This
3919 # definition is used unconditionally to initialise the default state of
3920 # the target option variable that governs usage of the feature.
3921 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3922 [2,19,52],,[.comm foo,1,32])
3923 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3924 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3925 [Define if your assembler supports specifying the alignment
3926 of objects allocated using the GAS .comm command.])
3927 # Used for DWARF 2 in PE
3928 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3929 gcc_cv_as_ix86_pe_secrel32,
3935 [if test x$gcc_cv_ld != x \
3936 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3937 gcc_cv_as_ix86_pe_secrel32=yes
3940 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3941 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3942 # Test if the assembler supports the extended form of the .section
3943 # directive that specifies section alignment. LTO support uses this,
3944 # but normally only after installation, so we warn but don't fail the
3945 # configure if LTO is enabled but the assembler does not support it.
3946 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3947 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3948 if test x$gcc_cv_as_section_has_align != xyes; then
3949 case ",$enable_languages," in
3951 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3958 # Test if the assembler supports the section flag 'e' for specifying
3959 # an excluded section.
3960 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3961 [2,22,51], [--fatal-warnings],
3964 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3965 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3966 [Define if your assembler supports specifying the section flag e.])
3968 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3969 gcc_cv_as_ix86_filds,,,
3970 [filds (%ebp); fists (%ebp)],,
3971 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3972 [Define if your assembler uses filds and fists mnemonics.])])
3974 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3975 gcc_cv_as_ix86_fildq,,,
3976 [fildq (%ebp); fistpq (%ebp)],,
3977 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3978 [Define if your assembler uses fildq and fistq mnemonics.])])
3980 gcc_GAS_CHECK_FEATURE([cmov syntax],
3981 gcc_cv_as_ix86_cmov_sun_syntax,,,
3982 [cmovl.l %edx, %eax],,
3983 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3984 [Define if your assembler supports the Sun syntax for cmov.])])
3986 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3987 gcc_cv_as_ix86_ffreep,,,
3989 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3990 [Define if your assembler supports the ffreep mnemonic.])])
3992 gcc_GAS_CHECK_FEATURE([.quad directive],
3993 gcc_cv_as_ix86_quad,,,
3995 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3996 [Define if your assembler supports the .quad directive.])])
3998 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3999 gcc_cv_as_ix86_sahf,,,
4002 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4003 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4005 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4006 gcc_cv_as_ix86_interunit_movq,,,
4010 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4011 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4012 [Define if your assembler supports interunit movq mnemonic.])
4014 gcc_GAS_CHECK_FEATURE([hle prefixes],
4015 gcc_cv_as_ix86_hle,,,
4016 [lock xacquire cmpxchg %esi, (%ecx)],,
4017 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4018 [Define if your assembler supports HLE prefixes.])])
4020 gcc_GAS_CHECK_FEATURE([swap suffix],
4021 gcc_cv_as_ix86_swap,,,
4022 [movl.s %esp, %ebp],,
4023 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4024 [Define if your assembler supports the swap suffix.])])
4026 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4027 gcc_cv_as_ix86_diff_sect_delta,,,
4035 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4036 [Define if your assembler supports the subtraction of symbols in different sections.])])
4038 # These two are used unconditionally by i386.[ch]; it is to be defined
4039 # to 1 if the feature is present, 0 otherwise.
4040 as_ix86_gotoff_in_data_opt=
4041 if test x$gas = xyes; then
4042 as_ix86_gotoff_in_data_opt="--32"
4044 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4045 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4046 [$as_ix86_gotoff_in_data_opt],
4052 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4053 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4054 [Define true if the assembler supports '.long foo@GOTOFF'.])
4056 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4057 gcc_cv_as_ix86_rep_lock_prefix,,,
4063 lock addl %edi, (%eax,%esi)
4064 lock orl $0, (%esp)],,
4065 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4066 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4068 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4069 gcc_cv_as_ix86_ud2,,,
4071 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4072 [Define if your assembler supports the 'ud2' mnemonic.])])
4074 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4075 gcc_cv_as_ix86_tlsgdplt,,,
4076 [call tls_gd@tlsgdplt],
4077 [if test x$gcc_cv_ld != x \
4078 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4079 gcc_cv_as_ix86_tlsgdplt=yes
4082 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4083 [Define if your assembler and linker support @tlsgdplt.])])
4086 .section .tdata,"aw'$tls_section_flag'",@progbits
4088 .section .text,"ax",@progbits
4089 call tls_ld@tlsldmplt'
4090 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4091 gcc_cv_as_ix86_tlsldmplt,,,
4093 [if test x$gcc_cv_ld != x \
4094 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4095 gcc_cv_as_ix86_tlsldmplt=yes
4098 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4099 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4100 [Define to 1 if your assembler and linker support @tlsldmplt.])
4102 # Enforce 32-bit output with gas and gld.
4103 if test x$gas = xyes; then
4104 as_ix86_tls_ldm_opt="--32"
4106 if echo "$ld_ver" | grep GNU > /dev/null; then
4107 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4108 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4110 ld_ix86_tls_ldm_opt="-melf_i386"
4114 .section .text,"ax",@progbits
4116 .type _start, @function
4118 leal value@tlsldm(%ebx), %eax
4119 call ___tls_get_addr@plt
4121 .section .tdata,"aw'$tls_section_flag'",@progbits
4122 .type value, @object
4124 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4125 gcc_cv_as_ix86_tlsldm,,
4126 [$as_ix86_tls_ldm_opt],
4128 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4129 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4130 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4131 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4132 gcc_cv_as_ix86_tlsldm=yes
4136 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4137 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4138 [Define to 1 if your assembler and linker support @tlsldm.])
4143 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4144 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4146 addl r15 = @ltoffx(x#), gp
4148 ld8.mov r16 = [[r15]], x#],,
4149 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4150 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4156 *-*-aix*) conftest_s=' .machine "pwr5"
4160 gcc_GAS_CHECK_FEATURE([.machine directive support],
4161 gcc_cv_as_machine_directive,,,
4162 [ .machine ppc7400])
4163 if test x$gcc_cv_as_machine_directive != xyes; then
4164 echo "*** This target requires an assembler supporting \".machine\"" >&2
4165 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4166 test x$build = x$target && exit 1
4170 *) conftest_s=' .machine power4
4175 gcc_GAS_CHECK_FEATURE([mfcr field support],
4176 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4178 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4179 [Define if your assembler supports mfcr field.])])
4182 *-*-aix*) conftest_s=' .machine "pwr5"
4185 *) conftest_s=' .machine power5
4190 gcc_GAS_CHECK_FEATURE([popcntb support],
4191 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4193 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4194 [Define if your assembler supports popcntb field.])])
4197 *-*-aix*) conftest_s=' .machine "pwr5x"
4200 *) conftest_s=' .machine power5
4205 gcc_GAS_CHECK_FEATURE([fp round support],
4206 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4208 [AC_DEFINE(HAVE_AS_FPRND, 1,
4209 [Define if your assembler supports fprnd.])])
4212 *-*-aix*) conftest_s=' .machine "pwr6"
4215 *) conftest_s=' .machine power6
4220 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4221 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4223 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4224 [Define if your assembler supports mffgpr and mftgpr.])])
4227 *-*-aix*) conftest_s=' .csect .text[[PR]]
4229 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4233 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4234 *) conftest_s=' .text
4236 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4239 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4240 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4242 [AC_DEFINE(HAVE_AS_REL16, 1,
4243 [Define if your assembler supports R_PPC_REL16 relocs.])])
4246 *-*-aix*) conftest_s=' .machine "pwr6"
4249 *) conftest_s=' .machine power6
4254 gcc_GAS_CHECK_FEATURE([compare bytes support],
4255 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4257 [AC_DEFINE(HAVE_AS_CMPB, 1,
4258 [Define if your assembler supports cmpb.])])
4261 *-*-aix*) conftest_s=' .machine "pwr6"
4264 *) conftest_s=' .machine power6
4269 gcc_GAS_CHECK_FEATURE([decimal float support],
4270 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4272 [AC_DEFINE(HAVE_AS_DFP, 1,
4273 [Define if your assembler supports DFP instructions.])])
4276 *-*-aix*) conftest_s=' .machine "pwr7"
4279 *) conftest_s=' .machine power7
4284 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4285 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4287 [AC_DEFINE(HAVE_AS_VSX, 1,
4288 [Define if your assembler supports VSX instructions.])])
4291 *-*-aix*) conftest_s=' .machine "pwr7"
4294 *) conftest_s=' .machine power7
4299 gcc_GAS_CHECK_FEATURE([popcntd support],
4300 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4302 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4303 [Define if your assembler supports POPCNTD instructions.])])
4306 *-*-aix*) conftest_s=' .machine "pwr8"
4307 .csect .text[[PR]]';;
4308 *) conftest_s=' .machine power8
4312 gcc_GAS_CHECK_FEATURE([power8 support],
4313 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4315 [AC_DEFINE(HAVE_AS_POWER8, 1,
4316 [Define if your assembler supports POWER8 instructions.])])
4319 *-*-aix*) conftest_s=' .machine "pwr9"
4320 .csect .text[[PR]]';;
4321 *) conftest_s=' .machine power9
4325 gcc_GAS_CHECK_FEATURE([power9 support],
4326 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4328 [AC_DEFINE(HAVE_AS_POWER9, 1,
4329 [Define if your assembler supports POWER9 instructions.])])
4332 *-*-aix*) conftest_s=' .csect .text[[PR]]
4334 *) conftest_s=' .text
4338 gcc_GAS_CHECK_FEATURE([lwsync support],
4339 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4341 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4342 [Define if your assembler supports LWSYNC instructions.])])
4345 *-*-aix*) conftest_s=' .machine "476"
4348 *) conftest_s=' .machine "476"
4353 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4354 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4356 [AC_DEFINE(HAVE_AS_DCI, 1,
4357 [Define if your assembler supports the DCI/ICI instructions.])])
4359 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4360 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4361 [.gnu_attribute 4,1],,
4362 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4363 [Define if your assembler supports .gnu_attribute.])])
4365 gcc_GAS_CHECK_FEATURE([tls marker support],
4366 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4367 [ bl __tls_get_addr(x@tlsgd)],,
4368 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4369 [Define if your assembler supports arg info for __tls_get_addr.])])
4373 gcc_GAS_CHECK_FEATURE([.ref support],
4374 gcc_cv_as_aix_ref, [2,21,0],,
4375 [ .csect stuff[[rw]]
4381 [AC_DEFINE(HAVE_AS_REF, 1,
4382 [Define if your assembler supports .ref])])
4388 gcc_GAS_CHECK_FEATURE([dwarf location lists section support],
4389 gcc_cv_as_aix_dwloc, [2,21,0],,
4392 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4393 [Define if your assembler supports .dwsect 0xB0000])])
4399 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4400 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4401 [ lw $4,%gp_rel(foo)($4)],,
4402 [if test x$target_cpu_default = x
4403 then target_cpu_default=MASK_EXPLICIT_RELOCS
4404 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4407 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4408 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4409 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4410 [Define if the assembler understands -mno-shared.])])
4412 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4413 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4414 [.gnu_attribute 4,1],,
4415 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4416 [Define if your assembler supports .gnu_attribute.])])
4418 gcc_GAS_CHECK_FEATURE([.module support],
4419 gcc_cv_as_mips_dot_module,,[-32],
4422 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4423 [Define if your assembler supports .module.])])
4424 if test x$gcc_cv_as_mips_dot_module = xno \
4425 && test x$with_fp_32 != x; then
4427 [Requesting --with-fp-32= requires assembler support for .module.])
4430 gcc_GAS_CHECK_FEATURE([.micromips support],
4431 gcc_cv_as_micromips_support,,[--fatal-warnings],
4433 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4434 [Define if your assembler supports the .set micromips directive])])
4436 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4437 gcc_cv_as_mips_dtprelword, [2,18,0],,
4438 [.section .tdata,"awT",@progbits
4442 .dtprelword x+0x8000],,
4443 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4444 [Define if your assembler supports .dtprelword.])])
4446 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4447 gcc_cv_as_mips_dspr1_mult,,,
4457 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4458 [Define if your assembler supports DSPR1 mult.])])
4460 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4461 gcc_cv_as_ld_jalr_reloc=no
4462 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4463 if test $in_tree_ld = yes ; then
4464 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4465 && test $in_tree_ld_is_elf = yes; then
4466 gcc_cv_as_ld_jalr_reloc=yes
4468 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4469 echo ' .ent x' > conftest.s
4470 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4471 echo ' lw $25,%call16(y)($28)' >> conftest.s
4472 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4473 echo '1: jalr $25' >> conftest.s
4474 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4475 echo '1: jalr $25' >> conftest.s
4476 echo ' .end x' >> conftest.s
4477 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4478 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4479 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4480 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4481 gcc_cv_as_ld_jalr_reloc=yes
4487 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4488 if test x$target_cpu_default = x; then
4489 target_cpu_default=MASK_RELAX_PIC_CALLS
4491 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4494 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4496 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4497 [gcc_cv_ld_mips_personality_relaxation],
4498 [gcc_cv_ld_mips_personality_relaxation=no
4499 if test $in_tree_ld = yes ; then
4500 if test "$gcc_cv_gld_major_version" -eq 2 \
4501 -a "$gcc_cv_gld_minor_version" -ge 21 \
4502 -o "$gcc_cv_gld_major_version" -gt 2; then
4503 gcc_cv_ld_mips_personality_relaxation=yes
4505 elif test x$gcc_cv_as != x \
4506 -a x$gcc_cv_ld != x \
4507 -a x$gcc_cv_readelf != x ; then
4508 cat > conftest.s <<EOF
4510 .cfi_personality 0x80,indirect_ptr
4517 .section .data,"aw",@progbits
4521 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4522 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4523 if $gcc_cv_readelf -d conftest 2>&1 \
4524 | grep TEXTREL > /dev/null 2>&1; then
4526 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4527 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4530 gcc_cv_ld_mips_personality_relaxation=yes
4534 rm -f conftest.s conftest.o conftest])
4535 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4536 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4537 [Define if your linker can relax absolute .eh_frame personality
4538 pointers into PC-relative form.])
4541 gcc_GAS_CHECK_FEATURE([-mnan= support],
4542 gcc_cv_as_mips_nan,,
4544 [AC_DEFINE(HAVE_AS_NAN, 1,
4545 [Define if the assembler understands -mnan=.])])
4546 if test x$gcc_cv_as_mips_nan = xno \
4547 && test x$with_nan != x; then
4549 [Requesting --with-nan= requires assembler support for -mnan=])
4553 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4554 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4555 [.gnu_attribute 8,1],,
4556 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4557 [Define if your assembler supports .gnu_attribute.])])
4561 # Mips and HP-UX need the GNU assembler.
4562 # Linux on IA64 might be able to use the Intel assembler.
4565 mips*-*-* | *-*-hpux* )
4566 if test x$gas_flag = xyes \
4567 || test x"$host" != x"$build" \
4568 || test ! -x "$gcc_cv_as" \
4569 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4572 echo "*** This configuration requires the GNU assembler" >&2
4578 # ??? Not all targets support dwarf2 debug_line, even within a version
4579 # of gas. Moreover, we need to emit a valid instruction to trigger any
4580 # info to the output file. So, as supported targets are added to gas 2.11,
4581 # add some instruction here to (also) show we expect this might work.
4582 # ??? Once 2.11 is released, probably need to add first known working
4583 # version to the per-target configury.
4585 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4586 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4587 | visium | xstormy16 | xtensa)
4597 if test x"$insn" != x; then
4599 .file 1 \"conftest.s\"
4602 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4603 gcc_cv_as_dwarf2_debug_line,
4604 [elf,2,11,0],, [$conftest_s],
4605 [if test x$gcc_cv_objdump != x \
4606 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4607 | grep debug_line > /dev/null 2>&1; then
4608 gcc_cv_as_dwarf2_debug_line=yes
4611 # The .debug_line file table must be in the exact order that
4612 # we specified the files, since these indices are also used
4613 # by DW_AT_decl_file. Approximate this test by testing if
4614 # the assembler bitches if the same index is assigned twice.
4615 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4616 gcc_cv_as_dwarf2_file_buggy,,,
4620 if test $gcc_cv_as_dwarf2_debug_line = yes \
4621 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4622 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4623 [Define if your assembler supports dwarf2 .file/.loc directives,
4624 and preserves file table indices exactly as given.])
4627 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4628 gcc_cv_as_gdwarf2_flag,
4629 [elf,2,11,0], [--gdwarf2], [$insn],,
4630 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4631 [Define if your assembler supports the --gdwarf2 option.])])
4633 gcc_GAS_CHECK_FEATURE([--gstabs option],
4634 gcc_cv_as_gstabs_flag,
4635 [elf,2,11,0], [--gstabs], [$insn],,
4636 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4637 [Define if your assembler supports the --gstabs option.])])
4639 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4640 gcc_cv_as_debug_prefix_map_flag,
4641 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4642 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4643 [Define if your assembler supports the --debug-prefix-map option.])])
4646 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4647 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4648 [# gas compiled without zlib cannot compress debug sections and warns
4649 # about it, but still exits successfully. So check for this, too.
4650 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4652 gcc_cv_as_compress_debug=0
4653 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4655 gcc_cv_as_compress_debug=1
4656 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4657 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4659 gcc_cv_as_compress_debug=0
4660 # FIXME: Future gas versions will support ELF gABI style via
4661 # --compress-debug-sections[=type].
4663 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4664 [Define to the level of your assembler's compressed debug section support.])
4665 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4666 [Define to the assembler option to enable compressed debug sections.])
4667 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4668 [Define to the assembler option to disable compressed debug sections.])
4670 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4673 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4674 [Define if your assembler supports .lcomm with an alignment field.])])
4676 if test x$with_sysroot = x && test x$host = x$target \
4677 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4678 && test "$prefix" != "NONE"; then
4679 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4680 [Define to PREFIX/include if cpp should also search that directory.])
4683 # Determine the version of glibc, if any, used on the target.
4684 AC_MSG_CHECKING([for target glibc version])
4685 AC_ARG_WITH([glibc-version],
4686 [AS_HELP_STRING([--with-glibc-version=M.N],
4687 [assume GCC used with glibc version M.N or later])], [
4688 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4689 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4690 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4692 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4694 glibc_version_major=0
4695 glibc_version_minor=0
4696 [if test -f $target_header_dir/features.h \
4697 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4698 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4699 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4700 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4702 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4703 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4704 [GNU C Library major version number used on the target, or 0.])
4705 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4706 [GNU C Library minor version number used on the target, or 0.])
4708 AC_ARG_ENABLE(gnu-unique-object,
4709 [AS_HELP_STRING([--enable-gnu-unique-object],
4710 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4711 [case $enable_gnu_unique_object in
4713 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4714 Valid choices are 'yes' and 'no'.]) ;;
4716 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4718 [.type foo, '$target_type_format_char'gnu_unique_object],,
4719 # We need to unquote above to to use the definition from config.gcc.
4720 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4721 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4723 if test x$enable_gnu_unique_object = xyes; then
4724 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4725 [Define if your assembler supports @gnu_unique_object.])
4728 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4729 [gcc_cv_as_line_zero],
4730 [gcc_cv_as_line_zero=no
4731 if test $in_tree_gas = yes; then
4732 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4733 elif test "x$gcc_cv_as" != x; then
4734 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4735 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4736 test "x`cat conftest.out`" = x
4738 gcc_cv_as_line_zero=yes
4740 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4741 cat conftest.s >&AS_MESSAGE_LOG_FD
4742 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4743 cat conftest.out >&AS_MESSAGE_LOG_FD
4745 rm -f conftest.o conftest.s conftest.out
4747 if test "x$gcc_cv_as_line_zero" = xyes; then
4748 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4749 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4752 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4753 gcc_cv_ld_eh_frame_hdr=no
4754 if test $in_tree_ld = yes ; then
4755 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4756 && test $in_tree_ld_is_elf = yes; then
4757 gcc_cv_ld_eh_frame_hdr=yes
4759 elif test x$gcc_cv_ld != x; then
4760 if echo "$ld_ver" | grep GNU > /dev/null; then
4761 # Check if linker supports --eh-frame-hdr option
4762 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4763 gcc_cv_ld_eh_frame_hdr=yes
4768 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4769 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4770 gcc_cv_ld_eh_frame_hdr=yes
4776 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4777 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4778 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4779 [Define if your linker supports .eh_frame_hdr.])
4781 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4783 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4784 gcc_cv_ld_eh_frame_ciev3=no
4785 if test $in_tree_ld = yes ; then
4786 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4787 && test $in_tree_ld_is_elf = yes; then
4788 gcc_cv_ld_eh_frame_ciev3=yes
4790 elif test x$gcc_cv_ld != x; then
4791 if echo "$ld_ver" | grep GNU > /dev/null; then
4792 gcc_cv_ld_eh_frame_ciev3=yes
4793 if test 0"$ld_date" -lt 20040513; then
4794 if test -n "$ld_date"; then
4795 # If there was date string, but was earlier than 2004-05-13, fail
4796 gcc_cv_ld_eh_frame_ciev3=no
4797 elif test "$ld_vers_major" -lt 2; then
4798 gcc_cv_ld_eh_frame_ciev3=no
4799 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4800 gcc_cv_ld_eh_frame_ciev3=no
4806 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4807 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4808 gcc_cv_ld_eh_frame_ciev3=yes
4814 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4815 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4816 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4817 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4819 AC_MSG_CHECKING(linker position independent executable support)
4821 if test $in_tree_ld = yes ; then
4823 # Full PIE support on Solaris was only introduced in gld 2.26.
4824 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4825 *) gcc_gld_pie_min_version=15 ;;
4827 if test "$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 \
4828 && test $in_tree_ld_is_elf = yes; then
4831 elif test x$gcc_cv_ld != x; then
4832 # Check if linker supports -pie option
4833 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4837 if echo "$ld_ver" | grep GNU > /dev/null \
4838 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4845 *-*-solaris2.1[[1-9]]*)
4846 # Solaris 11.x and Solaris 12 added PIE support.
4847 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4854 if test x"$gcc_cv_ld_pie" = xyes; then
4855 AC_DEFINE(HAVE_LD_PIE, 1,
4856 [Define if your linker supports PIE option.])
4858 AC_MSG_RESULT($gcc_cv_ld_pie)
4860 AC_MSG_CHECKING(linker PIE support with copy reloc)
4861 gcc_cv_ld_pie_copyreloc=no
4862 if test $gcc_cv_ld_pie = yes ; then
4863 if test $in_tree_ld = yes ; then
4864 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4865 gcc_cv_ld_pie_copyreloc=yes
4867 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4868 # Check if linker supports -pie option with copy reloc
4870 i?86-*-linux* | x86_64-*-linux*)
4871 cat > conftest1.s <<EOF
4874 .type a_glob, @object
4879 cat > conftest2.s <<EOF
4882 .type main, @function
4884 movl %eax, a_glob(%rip)
4887 .section .data.rel,"aw",@progbits
4892 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4893 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4894 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4895 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4896 gcc_cv_ld_pie_copyreloc=yes
4898 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4903 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4904 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4905 [Define 0/1 if your linker supports -pie option with copy reloc.])
4906 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4908 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4909 gcc_cv_ld_eh_gc_sections=no
4910 if test $in_tree_ld = yes ; then
4911 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4912 && test $in_tree_ld_is_elf = yes; then
4913 gcc_cv_ld_eh_gc_sections=yes
4915 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4916 cat > conftest.s <<EOF
4919 .type _start, @function
4922 .size _start, .-_start
4923 .section .text.foo,"ax",@progbits
4924 .type foo, @function
4928 .section .gcc_except_table.foo,"a",@progbits
4931 .section .eh_frame,"a",@progbits
4934 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4935 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4936 | grep "gc-sections option ignored" > /dev/null; then
4937 gcc_cv_ld_eh_gc_sections=no
4938 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4939 | grep gcc_except_table > /dev/null; then
4940 gcc_cv_ld_eh_gc_sections=yes
4941 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4942 if test x$gcc_cv_as_comdat_group != xyes; then
4943 gcc_cv_ld_eh_gc_sections=no
4944 cat > conftest.s <<EOF
4947 .type _start, @function
4950 .size _start, .-_start
4951 .section .gnu.linkonce.t.foo,"ax",@progbits
4952 .type foo, @function
4956 .section .gcc_except_table.foo,"a",@progbits
4959 .section .eh_frame,"a",@progbits
4962 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4963 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4964 | grep "gc-sections option ignored" > /dev/null; then
4965 gcc_cv_ld_eh_gc_sections=no
4966 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4967 | grep gcc_except_table > /dev/null; then
4968 gcc_cv_ld_eh_gc_sections=yes
4974 rm -f conftest.s conftest.o conftest
4978 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4979 gcc_cv_ld_eh_gc_sections=no
4982 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4983 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4984 [Define if your linker supports garbage collection of
4985 sections in presence of EH frames.])
4987 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4989 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4990 gcc_cv_ld_eh_gc_sections_bug=no
4991 if test $in_tree_ld = yes ; then
4992 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4993 && test $in_tree_ld_is_elf = yes; then
4994 gcc_cv_ld_eh_gc_sections_bug=yes
4996 elif test x$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
4997 gcc_cv_ld_eh_gc_sections_bug=yes
4998 cat > conftest.s <<EOF
5001 .type _start, @function
5004 .size _start, .-_start
5005 .section .text.startup.foo,"ax",@progbits
5006 .type foo, @function
5010 .section .gcc_except_table.foo,"a",@progbits
5013 .section .eh_frame,"a",@progbits
5016 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5017 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5018 | grep "gc-sections option ignored" > /dev/null; then
5020 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5021 | grep gcc_except_table > /dev/null; then
5022 gcc_cv_ld_eh_gc_sections_bug=no
5025 rm -f conftest.s conftest.o conftest
5027 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5028 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5029 [Define if your linker has buggy garbage collection of
5030 sections support when .text.startup.foo like sections are used.])
5032 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5034 AC_MSG_CHECKING(linker for compressed debug sections)
5035 # gold/gld support compressed debug sections since binutils 2.19/2.21
5036 if test $in_tree_ld = yes ; then
5037 gcc_cv_ld_compress_debug=0
5038 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5039 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5040 gcc_cv_ld_compress_debug=2
5041 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5042 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5043 && test $in_tree_ld_is_elf = yes; then
5044 gcc_cv_ld_compress_debug=1
5046 elif echo "$ld_ver" | grep GNU > /dev/null; then
5047 gcc_cv_ld_compress_debug=1
5048 if test 0"$ld_date" -lt 20050308; then
5049 if test -n "$ld_date"; then
5050 # If there was date string, but was earlier than 2005-03-08, fail
5051 gcc_cv_ld_compress_debug=0
5052 elif test "$ld_vers_major" -lt 2; then
5053 gcc_cv_ld_compress_debug=0
5054 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5055 gcc_cv_ld_compress_debug=0
5058 if test $ld_is_gold = yes; then
5059 gcc_cv_ld_compress_debug=2
5060 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5066 # Introduced in Solaris 11.2.
5067 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5068 gcc_cv_ld_compress_debug=3
5069 gcc_cv_ld_compress_debug_option="-z compress-sections"
5071 gcc_cv_ld_compress_debug=0
5075 # Assume linkers other than GNU ld don't support compessed debug
5077 gcc_cv_ld_compress_debug=0
5082 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5083 [Define to the level of your linker's compressed debug section support.])
5084 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5085 [Define to the linker option to enable compressed debug sections.])
5086 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5092 AC_CACHE_CHECK(linker --as-needed support,
5093 gcc_cv_ld_as_needed,
5094 [gcc_cv_ld_as_needed=no
5095 gcc_cv_ld_as_needed_option='--as-needed'
5096 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5097 if test $in_tree_ld = yes ; then
5098 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5099 && test $in_tree_ld_is_elf = yes; then
5100 gcc_cv_ld_as_needed=yes
5102 elif test x$gcc_cv_ld != x; then
5103 # Check if linker supports --as-needed and --no-as-needed options
5104 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5105 gcc_cv_ld_as_needed=yes
5108 # Solaris 2 ld always supports -z ignore/-z record.
5110 gcc_cv_ld_as_needed=yes
5111 gcc_cv_ld_as_needed_option="-z ignore"
5112 gcc_cv_ld_no_as_needed_option="-z record"
5117 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5118 # dl_iterate_phdr, i.e. since Solaris 11.
5120 *-*-solaris2.1[[1-9]]*)
5122 i?86-*-* | x86_64-*-*)
5123 if echo "$ld_ver" | grep GNU > /dev/null; then
5124 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5125 gcc_cv_ld_as_needed=no
5131 gcc_cv_ld_as_needed=no
5135 if test x"$gcc_cv_ld_as_needed" = xyes; then
5136 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5137 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5138 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5139 [Define to the linker option to ignore unused dependencies.])
5140 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5141 [Define to the linker option to keep unused dependencies.])
5144 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5145 saved_LDFLAGS="$LDFLAGS"
5146 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5147 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5148 AC_LINK_IFELSE([int main(void) {return 0;}],
5149 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5151 LDFLAGS="$saved_LDFLAGS"
5152 if test "x$gcc_cv_ld_clearcap" = xyes; then
5153 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5154 [Define if the linker supports clearing hardware capabilities via mapfile.])
5155 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5157 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5159 case "$target:$tm_file" in
5160 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5163 emul_name="-melf64lppc"
5166 emul_name="-melf64ppc"
5169 emul_name="-melf64ppc_fbsd"
5172 AC_CACHE_CHECK(linker support for omitting dot symbols,
5173 gcc_cv_ld_no_dot_syms,
5174 [gcc_cv_ld_no_dot_syms=no
5175 if test x"$ld_is_gold" = xyes; then
5176 gcc_cv_ld_no_dot_syms=yes
5177 elif test $in_tree_ld = yes ; then
5178 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5179 gcc_cv_ld_no_dot_syms=yes
5181 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5182 cat > conftest1.s <<EOF
5186 cat > conftest2.s <<EOF
5187 .section ".opd","aw"
5192 .quad .LEfoo,.TOC.@tocbase,0
5198 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5199 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5200 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5201 gcc_cv_ld_no_dot_syms=yes
5203 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5206 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5207 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5208 [Define if your PowerPC64 linker only needs function descriptor syms.])
5211 AC_CACHE_CHECK(linker large toc support,
5212 gcc_cv_ld_large_toc,
5213 [gcc_cv_ld_large_toc=no
5214 if test x"$ld_is_gold" = xyes; then
5215 gcc_cv_ld_large_toc=yes
5216 elif test $in_tree_ld = yes ; then
5217 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5218 gcc_cv_ld_large_toc=yes
5220 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5221 cat > conftest.s <<EOF
5222 .section ".tbss","awT",@nobits
5228 addis 9,13,ie0@got@tprel@ha
5229 ld 9,ie0@got@tprel@l(9)
5231 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5232 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5233 gcc_cv_ld_large_toc=yes
5235 rm -f conftest conftest.o conftest.s
5238 if test x"$gcc_cv_ld_large_toc" = xyes; then
5239 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5240 [Define if your PowerPC64 linker supports a large TOC.])
5243 AC_CACHE_CHECK(linker toc pointer alignment,
5244 gcc_cv_ld_toc_align,
5245 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5246 cat > conftest.s <<EOF
5251 .section .data.rel.ro,"aw",@progbits
5256 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5257 && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
5258 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5260 rm -f conftest conftest.o conftest.s
5263 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5264 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5265 [Define to .TOC. alignment forced by your linker.])
5272 AC_CACHE_CHECK(linker large toc support,
5273 gcc_cv_ld_large_toc,
5274 [gcc_cv_ld_large_toc=no
5275 if test x$gcc_cv_as != x ; then
5276 cat > conftest.s <<EOF
5286 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5287 gcc_cv_ld_large_toc=yes
5289 rm -f conftest conftest.o conftest.s
5292 if test x"$gcc_cv_ld_large_toc" = xyes; then
5293 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5294 [Define if your PowerPC64 linker supports a large TOC.])
5299 AC_CACHE_CHECK(linker --build-id support,
5301 [gcc_cv_ld_buildid=no
5302 if test $in_tree_ld = yes ; then
5303 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5304 "$gcc_cv_gld_minor_version" -ge 18 -o \
5305 "$gcc_cv_gld_major_version" -gt 2 \
5306 && test $in_tree_ld_is_elf = yes; then
5307 gcc_cv_ld_buildid=yes
5309 elif test x$gcc_cv_ld != x; then
5310 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5311 gcc_cv_ld_buildid=yes
5314 if test x"$gcc_cv_ld_buildid" = xyes; then
5315 AC_DEFINE(HAVE_LD_BUILDID, 1,
5316 [Define if your linker supports --build-id.])
5319 AC_ARG_ENABLE(linker-build-id,
5320 [AS_HELP_STRING([--enable-linker-build-id],
5321 [compiler will always pass --build-id to linker])],
5323 enable_linker_build_id=no)
5325 if test x"$enable_linker_build_id" = xyes; then
5326 if test x"$gcc_cv_ld_buildid" = xyes; then
5327 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5328 [Define if gcc should always pass --build-id to linker.])
5330 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5334 # In binutils 2.21, GNU ld gained support for new emulations fully
5335 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5336 AC_CACHE_CHECK(linker *_sol2 emulation support,
5337 gcc_cv_ld_sol2_emulation,
5338 [gcc_cv_ld_sol2_emulation=no
5339 if test $in_tree_ld = yes ; then
5340 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5341 "$gcc_cv_gld_minor_version" -ge 21 -o \
5342 "$gcc_cv_gld_major_version" -gt 2 \
5343 && test $in_tree_ld_is_elf = yes; then
5344 gcc_cv_ld_sol2_emulation=yes
5346 elif test x$gcc_cv_ld != x; then
5347 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5348 grep _sol2 > /dev/null; then
5349 gcc_cv_ld_sol2_emulation=yes
5352 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5353 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5354 [Define if your linker supports the *_sol2 emulations.])
5357 AC_CACHE_CHECK(linker --sysroot support,
5359 [gcc_cv_ld_sysroot=no
5360 if test $in_tree_ld = yes ; then
5361 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5362 gcc_cv_ld_sysroot=yes
5364 elif test x$gcc_cv_ld != x; then
5365 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5366 gcc_cv_ld_sysroot=yes
5369 if test x"$gcc_cv_ld_sysroot" = xyes; then
5370 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5371 [Define if your linker supports --sysroot.])
5376 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5377 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5378 gcc_cv_solaris_crts,
5379 [gcc_cv_solaris_crts=no
5380 if test x$host != x$target; then
5381 if test "x$with_sysroot" = xyes; then
5382 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5384 target_sysroot="${with_sysroot}"
5387 target_libdir="$target_sysroot/usr/lib"
5388 # At the time they were added, gcrt1.o became a symlink for backwards
5389 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5391 i?86-*-solaris2* | x86_64-*-solaris2*)
5392 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5395 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5400 if test x$gcc_cv_solaris_crts = xyes; then
5401 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5402 [Define if the system-provided CRTs are present on Solaris.])
5405 # Test for stack protector support in target C library.
5406 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5407 gcc_cv_libc_provides_ssp,
5408 [gcc_cv_libc_provides_ssp=no
5411 # All versions of musl provide stack protector
5412 gcc_cv_libc_provides_ssp=yes;;
5413 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5414 # glibc 2.4 and later provides __stack_chk_fail and
5415 # either __stack_chk_guard, or TLS access to stack guard canary.
5416 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5417 [if test -f $target_header_dir/features.h \
5418 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5419 $target_header_dir/features.h > /dev/null; then
5420 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5421 $target_header_dir/features.h > /dev/null && \
5422 test -f $target_header_dir/bits/uClibc_config.h && \
5423 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5424 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5425 gcc_cv_libc_provides_ssp=yes
5427 # all versions of Bionic support stack protector
5428 elif test -f $target_header_dir/sys/cdefs.h \
5429 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5430 $target_header_dir/sys/cdefs.h > /dev/null; then
5431 gcc_cv_libc_provides_ssp=yes
5435 # Avoid complicated tests (see
5436 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5437 # simply assert that glibc does provide this, which is true for all
5438 # realistically usable GNU/Hurd configurations.
5439 # All supported versions of musl provide it as well
5440 gcc_cv_libc_provides_ssp=yes;;
5441 *-*-darwin* | *-*-freebsd*)
5442 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5443 [echo "no __stack_chk_fail on this target"])
5445 *) gcc_cv_libc_provides_ssp=no ;;
5448 if test x$gcc_cv_libc_provides_ssp = xyes; then
5449 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5450 [Define if your target C library provides stack protector support])
5453 # Check whether --enable-default-ssp was given.
5454 AC_ARG_ENABLE(default-ssp,
5455 [AS_HELP_STRING([--enable-default-ssp],
5456 [enable Stack Smashing Protection as default])],[
5457 if test x$gcc_cv_libc_provides_ssp = xyes; then
5459 ia64*-*-*) enable_default_ssp=no ;;
5460 *) enable_default_ssp=$enableval ;;
5463 enable_default_ssp=no
5465 enable_default_ssp=no)
5466 if test x$enable_default_ssp = xyes ; then
5467 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5468 [Define if your target supports default stack protector and it is enabled.])
5470 AC_SUBST([enable_default_ssp])
5472 # Test for <sys/sdt.h> on the target.
5473 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5474 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5476 if test -f $target_header_dir/sys/sdt.h; then
5478 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5479 [Define if your target C library provides sys/sdt.h])
5481 AC_MSG_RESULT($have_sys_sdt_h)
5483 # Check if TFmode long double should be used by default or not.
5484 # Some glibc targets used DFmode long double, but with glibc 2.4
5485 # and later they can use TFmode.
5487 powerpc*-*-linux* | \
5491 AC_ARG_WITH(long-double-128,
5492 [AS_HELP_STRING([--with-long-double-128],
5493 [use 128-bit long double by default])],
5494 gcc_cv_target_ldbl128="$with_long_double_128",
5495 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5496 [gcc_cv_target_ldbl128=no
5497 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5498 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5499 && gcc_cv_target_ldbl128=yes
5503 if test x$gcc_cv_target_ldbl128 = xyes; then
5504 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5505 [Define if TFmode long double should be the default])
5508 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5509 gcc_cv_target_dl_iterate_phdr=unknown
5511 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5512 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5513 # libdl there, both complicating its use and breaking compatibility
5514 # between Solaris 10 updates.
5515 *-*-solaris2.1[[1-9]]*)
5516 # <link.h> needs both a dl_iterate_phdr declaration and support for
5517 # compilation with largefile support.
5518 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5519 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5520 gcc_cv_target_dl_iterate_phdr=yes
5522 gcc_cv_target_dl_iterate_phdr=no
5525 *-*-dragonfly* | *-*-freebsd*)
5526 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5527 gcc_cv_target_dl_iterate_phdr=yes
5529 gcc_cv_target_dl_iterate_phdr=no
5533 gcc_cv_target_dl_iterate_phdr=yes
5536 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5537 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5538 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5539 [Define if your target C library provides the `dl_iterate_phdr' function.])
5541 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5543 # We no longer support different GC mechanisms. Emit an error if
5544 # the user configures with --with-gc.
5546 [AS_HELP_STRING([--with-gc={page,zone}],
5547 [this option is not supported anymore. It used to choose
5548 the garbage collection mechanism to use with the compiler])],
5549 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5552 # Libraries to use on the host. This will normally be set by the top
5553 # level Makefile. Here we simply capture the value for our Makefile.
5554 if test -z "${HOST_LIBS+set}"; then
5559 # Use the system's zlib library.
5562 dnl Very limited version of automake's enable-maintainer-mode
5564 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5565 dnl maintainer-mode is disabled by default
5566 AC_ARG_ENABLE(maintainer-mode,
5567 [AS_HELP_STRING([--enable-maintainer-mode],
5568 [enable make rules and dependencies not useful
5569 (and sometimes confusing) to the casual installer])],
5570 maintainer_mode=$enableval,
5573 AC_MSG_RESULT($maintainer_mode)
5575 if test "$maintainer_mode" = "yes"; then
5582 dnl Whether to prevent multiple front-ends from linking at the same time
5584 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5585 AC_ARG_ENABLE(link-mutex,
5586 [AS_HELP_STRING([--enable-link-mutex],
5587 [avoid linking multiple front-ends at once to avoid thrashing
5588 on the build machine])],
5589 do_link_mutex=$enableval,
5591 AC_MSG_RESULT($do_link_mutex)
5593 if test "$do_link_mutex" = "yes"; then
5598 AC_SUBST(DO_LINK_MUTEX)
5604 # Make empty files to contain the specs and options for each language.
5605 # Then add #include lines to for a compiler that has specs and/or options.
5611 # These (without "all_") are set in each config-lang.in.
5612 # `language' must be a single word so is spelled singularly.
5615 all_outputs='Makefile'
5616 # List of language makefile fragments.
5618 # Additional files for gengtype
5619 all_gtfiles="$target_gtfiles"
5621 # These are the languages that are set in --enable-languages,
5622 # and are available in the GCC tree.
5623 all_selected_languages=
5625 # Add the language fragments.
5626 # Languages are added via two mechanisms. Some information must be
5627 # recorded in makefile variables, these are defined in config-lang.in.
5628 # We accumulate them and plug them into the main Makefile.
5629 # The other mechanism is a set of hooks for each of the main targets
5630 # like `clean', `install', etc.
5632 language_hooks="Make-hooks"
5634 for lang in ${srcdir}/*/config-lang.in
5637 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5639 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5640 if test "x$lang_alias" = x
5642 echo "$lang doesn't set \$language." 1>&2
5645 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5646 subdirs="$subdirs $subdir"
5648 # $gcc_subdir is where the gcc integration files are to be found
5649 # for a language, both for internal compiler purposes (compiler
5650 # sources implementing front-end to GCC tree converters), and for
5651 # build infrastructure purposes (Make-lang.in, etc.)
5653 # This will be <subdir> (relative to $srcdir) if a line like
5654 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5655 # is found in <langdir>/config-lang.in, and will remain <langdir>
5658 # Except for the language alias (fetched above), the regular
5659 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5660 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5661 # only this and the language alias.
5663 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5664 if [ "$gcc_subdir" = "" ]; then
5665 gcc_subdir="$subdir"
5668 case ",$enable_languages," in
5670 all_selected_languages="$all_selected_languages $lang_alias"
5671 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5672 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5684 . ${srcdir}/$gcc_subdir/config-lang.in
5685 if test "x$language" = x
5687 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5692 case ",$enable_languages," in
5695 for i in $subdir_requires; do
5696 test -f "${srcdir}/$i/config-lang.in" && continue
5704 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5705 if test -f $srcdir/$gcc_subdir/lang.opt; then
5706 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5707 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5709 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5710 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5712 all_languages="$all_languages $language"
5713 all_compilers="$all_compilers $compilers"
5714 all_outputs="$all_outputs $outputs"
5715 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5716 case ",$enable_languages," in
5718 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5720 AC_SUBST(enable_lto)
5727 for language in $all_selected_languages
5729 check_languages="$check_languages check-$language"
5732 # We link each language in with a set of hooks, reached indirectly via
5733 # lang.${target}. Only do so for selected languages.
5737 target_list="all.cross start.encap rest.encap tags \
5738 install-common install-man install-info install-pdf install-html dvi \
5739 pdf html uninstall info man srcextra srcman srcinfo \
5740 mostlyclean clean distclean maintainer-clean install-plugin"
5742 for t in $target_list
5745 for lang in $all_selected_languages
5749 echo "lang.$t: $x" >> Make-hooks
5753 # Option include files
5756 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5757 option_includes="option-includes.mk"
5758 AC_SUBST_FILE(option_includes)
5766 echo "dir ." > .gdbinit
5767 echo "dir ${srcdir}" >> .gdbinit
5768 if test x$gdb_needs_out_file_path = xyes
5770 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5772 if test "x$subdirs" != x; then
5775 echo "dir ${srcdir}/$s" >> .gdbinit
5778 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5779 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5781 # Put a breakpoint on __asan_report_error to help with debugging buffer
5784 *-fsanitize=address*)
5785 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5789 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5790 AC_SUBST(gcc_tooldir)
5793 # Find a directory in which to install a shared libgcc.
5795 AC_ARG_ENABLE(version-specific-runtime-libs,
5796 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5797 [specify that runtime libraries should be
5798 installed in a compiler-specific directory])])
5800 # Substitute configuration variables
5803 AC_SUBST(all_compilers)
5804 AC_SUBST(all_gtfiles)
5805 AC_SUBST(all_lang_makefrags)
5806 AC_SUBST(all_languages)
5807 AC_SUBST(all_selected_languages)
5808 AC_SUBST(build_exeext)
5809 AC_SUBST(build_install_headers_dir)
5810 AC_SUBST(build_xm_file_list)
5811 AC_SUBST(build_xm_include_list)
5812 AC_SUBST(build_xm_defines)
5813 AC_SUBST(build_file_translate)
5814 AC_SUBST(check_languages)
5815 AC_SUBST(cpp_install_dir)
5816 AC_SUBST(xmake_file)
5817 AC_SUBST(tmake_file)
5818 AC_SUBST(TM_ENDIAN_CONFIG)
5819 AC_SUBST(TM_MULTILIB_CONFIG)
5820 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5821 AC_SUBST(extra_gcc_objs)
5822 AC_SUBST(user_headers_inc_next_pre)
5823 AC_SUBST(user_headers_inc_next_post)
5824 AC_SUBST(extra_headers_list)
5825 AC_SUBST(extra_objs)
5826 AC_SUBST(extra_programs)
5827 AC_SUBST(float_h_file)
5828 AC_SUBST(gcc_config_arguments)
5829 AC_SUBST(gcc_gxx_include_dir)
5830 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5831 AC_SUBST(host_exeext)
5832 AC_SUBST(host_xm_file_list)
5833 AC_SUBST(host_xm_include_list)
5834 AC_SUBST(host_xm_defines)
5835 AC_SUBST(out_host_hook_obj)
5837 AC_SUBST(lang_opt_files)
5838 AC_SUBST(lang_specs_files)
5839 AC_SUBST(lang_tree_files)
5840 AC_SUBST(local_prefix)
5842 AC_SUBST(objc_boehm_gc)
5844 AC_SUBST(out_object_file)
5845 AC_SUBST(common_out_file)
5846 AC_SUBST(common_out_object_file)
5847 AC_SUBST(tm_file_list)
5848 AC_SUBST(tm_include_list)
5849 AC_SUBST(tm_defines)
5850 AC_SUBST(tm_p_file_list)
5851 AC_SUBST(tm_p_include_list)
5852 AC_SUBST(xm_file_list)
5853 AC_SUBST(xm_include_list)
5854 AC_SUBST(xm_defines)
5855 AC_SUBST(use_gcc_stdint)
5856 AC_SUBST(c_target_objs)
5857 AC_SUBST(cxx_target_objs)
5858 AC_SUBST(fortran_target_objs)
5859 AC_SUBST(target_cpu_default)
5861 AC_SUBST_FILE(language_hooks)
5864 if test x${build} = x${host} ; then
5865 if test x${host} = x${target} ; then
5866 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5868 echo "Links are now set up to build a cross-compiler" 1>&2
5869 echo " from ${host} to ${target}." 1>&2
5872 if test x${host} = x${target} ; then
5873 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5874 echo " for ${target}." 1>&2
5876 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5877 echo " from ${host} to ${target}." 1>&2
5881 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5882 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5884 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5885 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5886 if test "x${ISLLIBS}" != "x" ; then
5887 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5890 # Check whether isl_schedule_constraints_compute_schedule is available;
5891 # it's new in ISL-0.13.
5892 # Check whether isl_options_set_schedule_serialize_sccs is available;
5893 # it's new in ISL-0.15.
5894 if test "x${ISLLIBS}" != "x" ; then
5895 saved_CXXFLAGS="$CXXFLAGS"
5896 CXXFLAGS="$CXXFLAGS $ISLINC"
5898 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5900 AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
5901 AC_TRY_LINK([#include <isl/schedule.h>],
5902 [isl_schedule_constraints_compute_schedule (NULL);],
5903 [ac_has_isl_schedule_constraints_compute_schedule=yes],
5904 [ac_has_isl_schedule_constraints_compute_schedule=no])
5905 AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
5907 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5908 AC_TRY_LINK([#include <isl/schedule.h>],
5909 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5910 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5911 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5912 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5914 AC_MSG_CHECKING([Checking for isl_ctx_get_max_operations])
5915 AC_TRY_LINK([#include <isl/ctx.h>],
5916 [isl_ctx_get_max_operations (isl_ctx_alloc ());],
5917 [ac_has_isl_ctx_get_max_operations=yes],
5918 [ac_has_isl_ctx_get_max_operations=no])
5919 AC_MSG_RESULT($ac_has_isl_ctx_get_max_operations)
5922 CXXFLAGS="$saved_CXXFLAGS"
5924 if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
5925 AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
5926 [Define if isl_schedule_constraints_compute_schedule exists.])
5929 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5930 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5931 [Define if isl_options_set_schedule_serialize_sccs exists.])
5933 if test x"$ac_has_isl_ctx_get_max_operations" = x"yes"; then
5934 AC_DEFINE(HAVE_ISL_CTX_MAX_OPERATIONS, 1,
5935 [Define if isl_ctx_get_max_operations exists.])
5940 AC_SUBST(pluginlibs)
5941 AC_SUBST(enable_plugin)
5942 if test x"$enable_plugin" = x"yes"; then
5943 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5947 # Enable --enable-host-shared
5948 AC_ARG_ENABLE(host-shared,
5949 [AS_HELP_STRING([--enable-host-shared],
5950 [build host code as shared libraries])],
5951 [PICFLAG=-fPIC], [PICFLAG=])
5952 AC_SUBST(enable_host_shared)
5956 AC_ARG_ENABLE(libquadmath-support,
5957 [AS_HELP_STRING([--disable-libquadmath-support],
5958 [disable libquadmath support for Fortran])],
5959 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5960 ENABLE_LIBQUADMATH_SUPPORT=yes)
5961 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5962 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5963 [Define to 1 to enable libquadmath support])
5967 # Specify what hash style to use by default.
5968 AC_ARG_WITH([linker-hash-style],
5969 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5970 [specify the linker hash style])],
5971 [case x"$withval" in
5973 LINKER_HASH_STYLE=sysv
5976 LINKER_HASH_STYLE=gnu
5979 LINKER_HASH_STYLE=both
5982 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5985 [LINKER_HASH_STYLE=''])
5986 if test x"${LINKER_HASH_STYLE}" != x; then
5987 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5988 [The linker hash style])
5991 # Specify what should be the default of -fdiagnostics-color option.
5992 AC_ARG_WITH([diagnostics-color],
5993 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5994 [specify the default of -fdiagnostics-color option
5995 auto-if-env stands for -fdiagnostics-color=auto if
5996 GCC_COLOR environment variable is present and
5997 -fdiagnostics-color=never otherwise])],
5998 [case x"$withval" in
6000 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6003 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6006 DIAGNOSTICS_COLOR_DEFAULT=-1
6009 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6012 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6015 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6016 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6017 [The default for -fdiagnostics-color option])
6019 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6020 # of jit/jit-playback.c.
6021 cat > gcc-driver-name.h <<EOF
6022 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6025 # Check whether --enable-default-pie was given.
6026 AC_ARG_ENABLE(default-pie,
6027 [AS_HELP_STRING([--enable-default-pie],
6028 [enable Position Independent Executable as default])],
6029 enable_default_pie=$enableval,
6030 enable_default_pie=no)
6031 if test x$enable_default_pie = xyes ; then
6032 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6033 [Define if your target supports default PIE and it is enabled.])
6035 AC_SUBST([enable_default_pie])
6037 # Check if -fno-PIE works.
6038 AC_CACHE_CHECK([for -fno-PIE option],
6040 [saved_CXXFLAGS="$CXXFLAGS"
6041 CXXFLAGS="$CXXFLAGS -fno-PIE"
6042 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6043 [gcc_cv_c_no_fpie=yes],
6044 [gcc_cv_c_no_fpie=no])
6045 CXXFLAGS="$saved_CXXFLAGS"])
6046 if test "$gcc_cv_c_no_fpie" = "yes"; then
6047 NO_PIE_CFLAGS="-fno-PIE"
6049 AC_SUBST([NO_PIE_CFLAGS])
6051 # Check if -no-pie works.
6052 AC_CACHE_CHECK([for -no-pie option],
6054 [saved_LDFLAGS="$LDFLAGS"
6055 LDFLAGS="$LDFLAGS -no-pie"
6056 AC_LINK_IFELSE([int main(void) {return 0;}],
6057 [gcc_cv_no_pie=yes],
6059 LDFLAGS="$saved_LDFLAGS"])
6060 if test "$gcc_cv_no_pie" = "yes"; then
6061 NO_PIE_FLAG="-no-pie"
6063 AC_SUBST([NO_PIE_FLAG])
6065 # Check linker supports '-z bndplt'
6066 ld_bndplt_support=no
6067 AC_MSG_CHECKING(linker -z bndplt option)
6068 if test x"$ld_is_gold" = xno; then
6069 if test $in_tree_ld = yes ; then
6070 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6071 ld_bndplt_support=yes
6073 elif test x$gcc_cv_ld != x; then
6074 # Check if linker supports -a bndplt option
6075 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6076 ld_bndplt_support=yes
6080 if test x"$ld_bndplt_support" = xyes; then
6081 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6082 [Define if your linker supports -z bndplt])
6084 AC_MSG_RESULT($ld_bndplt_support)
6086 # Configure the subdirectories
6087 # AC_CONFIG_SUBDIRS($subdirs)
6089 # Create the Makefile
6090 # and configure language subdirectories
6091 AC_CONFIG_FILES($all_outputs)
6093 AC_CONFIG_COMMANDS([default],
6095 case ${CONFIG_HEADERS} in
6096 *auto-host.h:config.in*)
6099 # Make sure all the subdirs exist.
6100 for d in $subdirs doc build common c-family
6102 test -d $d || mkdir $d
6105 [subdirs='$subdirs'])