2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2016 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Used for constructing correct paths for offload compilers.
42 real_target_noncanonical=${target_noncanonical}
45 # Determine the target- and build-specific subdirectories
48 # Set program_transform_name
51 # Check for bogus environment variables.
52 # Test if LIBRARY_PATH contains the notation for the current directory
53 # since this would lead to problems installing/building glibc.
54 # LIBRARY_PATH contains the current directory if one of the following
56 # - one of the terminals (":" and ";") is the first or last sign
57 # - two terminals occur directly after each other
58 # - the path contains an element with a dot in it
59 AC_MSG_CHECKING(LIBRARY_PATH variable)
61 case ${LIBRARY_PATH} in
62 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
63 library_path_setting="contains current directory"
66 library_path_setting="ok"
70 AC_MSG_RESULT($library_path_setting)
71 if test "$library_path_setting" != "ok"; then
73 *** LIBRARY_PATH shouldn't contain the current directory when
74 *** building gcc. Please change the environment variable
75 *** and run configure again.])
78 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
79 # since this would lead to problems installing/building glibc.
80 # GCC_EXEC_PREFIX contains the current directory if one of the following
82 # - one of the terminals (":" and ";") is the first or last sign
83 # - two terminals occur directly after each other
84 # - the path contains an element with a dot in it
85 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
87 case ${GCC_EXEC_PREFIX} in
88 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
89 gcc_exec_prefix_setting="contains current directory"
92 gcc_exec_prefix_setting="ok"
96 AC_MSG_RESULT($gcc_exec_prefix_setting)
97 if test "$gcc_exec_prefix_setting" != "ok"; then
99 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
100 *** building gcc. Please change the environment variable
101 *** and run configure again.])
108 # Specify the local prefix
110 AC_ARG_WITH(local-prefix,
111 [AS_HELP_STRING([--with-local-prefix=DIR],
112 [specifies directory to put local include])],
113 [case "${withval}" in
114 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
116 *) local_prefix=$with_local_prefix ;;
119 # Default local prefix if it is empty
120 if test x$local_prefix = x; then
121 local_prefix=/usr/local
124 AC_ARG_WITH([native-system-header-dir],
125 [ --with-native-system-header-dir=dir
126 use dir as the directory to look for standard
127 system header files in. Defaults to /usr/include.],
129 case ${with_native_system_header_dir} in
130 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
131 /* | [[A-Za-z]]:[[\\/]]*) ;;
132 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
134 configured_native_system_header_dir="${withval}"
135 ], [configured_native_system_header_dir=])
137 AC_ARG_WITH(build-sysroot,
138 [AS_HELP_STRING([--with-build-sysroot=sysroot],
139 [use sysroot as the system root during the build])],
140 [if test x"$withval" != x ; then
141 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
143 [SYSROOT_CFLAGS_FOR_TARGET=])
144 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
146 if test "x$prefix" = xNONE; then
147 test_prefix=/usr/local
151 if test "x$exec_prefix" = xNONE; then
152 test_exec_prefix=$test_prefix
154 test_exec_prefix=$exec_prefix
158 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
159 [search for usr/lib, usr/include, et al, within DIR])],
161 case ${with_sysroot} in
163 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
165 case ${with_sysroot} in
166 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
167 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
170 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
171 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
173 case ${TARGET_SYSTEM_ROOT} in
174 "${test_prefix}"|"${test_prefix}/"*|\
175 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
176 '${prefix}'|'${prefix}/'*|\
177 '${exec_prefix}'|'${exec_prefix}/'*)
178 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
179 TARGET_SYSTEM_ROOT_DEFINE="$t"
184 TARGET_SYSTEM_ROOT_DEFINE=
185 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
187 AC_SUBST(TARGET_SYSTEM_ROOT)
188 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
189 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
191 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
192 # passed in by the toplevel make and thus we'd get different behavior
193 # depending on where we built the sources.
195 # Specify the g++ header file directory
196 AC_ARG_WITH(gxx-include-dir,
197 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
198 [specifies directory to put g++ header files])],
199 [case "${withval}" in
200 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
202 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
205 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
206 if test x${gcc_gxx_include_dir} = x; then
207 if test x${enable_version_specific_runtime_libs} = xyes; then
208 gcc_gxx_include_dir='${libsubdir}/include/c++'
210 libstdcxx_incdir='include/c++/$(version)'
211 if test x$host != x$target; then
212 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
214 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
218 gcc_gxx_include_dir_add_sysroot=0
219 if test "${with_sysroot+set}" = set; then
220 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
221 if test "${gcc_gxx_without_sysroot}"; then
222 if test x${with_sysroot} != x/; then
223 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
225 gcc_gxx_include_dir_add_sysroot=1
229 AC_ARG_WITH(cpp_install_dir,
230 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
231 [install the user visible C preprocessor in DIR
232 (relative to PREFIX) as well as PREFIX/bin])],
233 [if test x$withval = xyes; then
234 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
235 elif test x$withval != xno; then
236 cpp_install_dir=$withval
239 # We would like to our source tree to be readonly. However when releases or
240 # pre-releases are generated, the flex/bison generated files as well as the
241 # various formats of manuals need to be included along with the rest of the
242 # sources. Therefore we have --enable-generated-files-in-srcdir to do
245 AC_MSG_CHECKING([whether to place generated files in the source directory])
246 dnl generated-files-in-srcdir is disabled by default
247 AC_ARG_ENABLE(generated-files-in-srcdir,
248 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
249 [put copies of generated files in source dir
250 intended for creating source tarballs for users
251 without texinfo bison or flex])],
252 generated_files_in_srcdir=$enableval,
253 generated_files_in_srcdir=no)
255 AC_MSG_RESULT($generated_files_in_srcdir)
257 if test "$generated_files_in_srcdir" = "yes"; then
264 # -------------------
265 # Find default linker
266 # -------------------
270 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
271 gnu_ld_flag="$with_gnu_ld",
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 $tgt | sed 's/=.*//'`
944 if echo "$tgt" | grep "^hsa" > /dev/null ; then
950 if test x"$offload_targets" = x; then
953 offload_targets="$offload_targets,$tgt"
956 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
957 [Define to offload targets, separated by commas.])
958 if test x"$enable_offloading" != x; then
959 AC_DEFINE(ENABLE_OFFLOADING, 1,
960 [Define this to enable support for offloading.])
962 AC_DEFINE(ENABLE_OFFLOADING, 0,
963 [Define this to enable support for offloading.])
966 if test x"$enable_hsa" = x1 ; then
967 AC_DEFINE(ENABLE_HSA, 1,
968 [Define this to enable support for generating HSAIL.])
971 AC_ARG_WITH(multilib-list,
972 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
974 with_multilib_list=default)
976 # -------------------------
977 # Checks for other programs
978 # -------------------------
982 # Find some useful tools
984 # We need awk to create options.c and options.h.
985 # Bail out if it's missing.
987 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
994 AC_SUBST(ranlib_flags)
998 # See if cmp has --ignore-initial.
999 gcc_AC_PROG_CMP_IGNORE_INITIAL
1001 # See if we have the mktemp command.
1002 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1004 # See if makeinfo has been installed and is modern enough
1005 # that we can use it.
1006 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1007 [GNU texinfo.* \([0-9][0-9.]*\)],
1008 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1009 if test $gcc_cv_prog_makeinfo_modern = no; then
1011 *** Makeinfo is missing or too old.
1012 *** Info documentation will not be built.])
1017 AC_SUBST(BUILD_INFO)
1019 # Is pod2man recent enough to regenerate manpages?
1020 AC_MSG_CHECKING([for recent Pod::Man])
1021 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1023 GENERATED_MANPAGES=generated-manpages
1028 AC_SUBST(GENERATED_MANPAGES)
1030 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1033 dnl Don't use AC_PROG_LEX; we insist on flex.
1034 dnl LEXLIB is not useful in gcc.
1035 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1038 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1040 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1041 # check for build == host before using them.
1044 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1045 && test -d ../binutils ; then
1046 NM='${objdir}/../binutils/nm-new'
1048 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1052 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1053 && test -d ../binutils ; then
1054 AR='${objdir}/../binutils/ar'
1056 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1059 # The jit documentation looks better if built with sphinx, but can be
1060 # built with texinfo if sphinx is not available.
1061 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1062 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1064 # --------------------
1065 # Checks for C headers
1066 # --------------------
1068 # Need to reject headers which give warnings, so that the -Werror bootstrap
1069 # works later. *sigh* This needs to come before all header checks.
1076 AC_HEADER_TIOCGWINSZ
1077 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1078 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1079 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1080 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1082 # Check for thread headers.
1083 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1084 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1086 # These tests can't be done till we know if we have limits.h.
1090 # ----------------------
1091 # Checks for C++ headers
1092 # ----------------------
1094 dnl Autoconf will give an error in the configure script if there is no
1095 dnl C++ preprocessor. Hack to prevent that.
1096 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1098 m4_popdef([AC_MSG_ERROR])[]dnl
1100 AC_CHECK_HEADERS(unordered_map)
1101 AC_CHECK_HEADERS(tr1/unordered_map)
1102 AC_CHECK_HEADERS(ext/hash_map)
1105 # Dependency checking.
1109 AC_CONFIG_COMMANDS([gccdepdir],[
1110 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1111 for lang in $subdirs c-family common
1113 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1114 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1116 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1123 # These libraries may be used by collect2.
1124 # We may need a special search path to get them linked.
1125 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1127 for libs in '' -lld -lmld \
1128 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1129 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1132 AC_TRY_LINK_FUNC(ldopen,
1133 [gcc_cv_collect2_libs="$libs"; break])
1136 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1137 case $gcc_cv_collect2_libs in
1139 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1141 AC_SUBST(COLLECT2_LIBS)
1143 # When building Ada code on Alpha, we need exc_resume which is usually in
1144 # -lexc. So test for it.
1147 AC_SEARCH_LIBS(exc_resume, exc)
1150 AC_SUBST(GNAT_LIBEXC)
1152 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1155 AC_SEARCH_LIBS(kstat_open, kstat)
1156 EXTRA_GCC_LIBS="$LIBS"
1158 AC_SUBST(EXTRA_GCC_LIBS)
1160 # Some systems put ldexp and frexp in libm instead of libc; assume
1161 # they're both in the same place. jcf-dump needs them.
1164 AC_SEARCH_LIBS(ldexp, m)
1169 # Use <inttypes.h> only if it exists,
1170 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1172 AC_MSG_CHECKING(for inttypes.h)
1173 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1174 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1175 [[#define __STDC_FORMAT_MACROS
1176 #include <sys/types.h>
1177 #include <inttypes.h>]],
1182 [gcc_cv_header_inttypes_h=yes],
1183 [gcc_cv_header_inttypes_h=no])])
1184 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1185 if test $gcc_cv_header_inttypes_h = yes; then
1186 AC_DEFINE(HAVE_INTTYPES_H, 1,
1187 [Define if you have a working <inttypes.h> header file.])
1190 dnl Disabled until we have a complete test for buggy enum bitfields.
1191 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1193 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1194 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1195 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1196 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1197 putchar_unlocked putc_unlocked)
1198 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1199 popen sysconf strsignal getrusage nl_langinfo \
1200 gettimeofday mbstowcs wcswidth mmap setlocale \
1201 gcc_UNLOCKED_FUNCS madvise)
1203 if test x$ac_cv_func_mbstowcs = xyes; then
1204 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1205 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1211 [gcc_cv_func_mbstowcs_works=yes],
1212 [gcc_cv_func_mbstowcs_works=no],
1213 [gcc_cv_func_mbstowcs_works=yes])])
1214 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1215 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1216 [Define this macro if mbstowcs does not crash when its
1217 first argument is NULL.])
1221 AC_CHECK_TYPE(ssize_t, int)
1222 AC_CHECK_TYPE(caddr_t, char *)
1224 GCC_AC_FUNC_MMAP_BLACKLIST
1228 # Under VMS, vfork works very differently than on Unix. The standard test
1229 # won't work, and it isn't easily adaptable. It makes more sense to
1231 ac_cv_func_vfork_works=yes
1238 # Until we have in-tree GNU iconv:
1240 if test -f "$LTLIBICONV"; then
1241 LIBICONV_DEP=$LTLIBICONV
1243 AC_SUBST(LIBICONV_DEP)
1249 # We will need to find libiberty.h and ansidecl.h
1250 saved_CFLAGS="$CFLAGS"
1251 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1252 saved_CXXFLAGS="$CXXFLAGS"
1253 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1255 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1256 # normal autoconf function for these. But force definition of
1257 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1258 # basename handling in libiberty.h.
1259 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1260 #undef HAVE_DECL_BASENAME
1261 #define HAVE_DECL_BASENAME 1
1262 #include "ansidecl.h"
1263 #include "system.h"])
1265 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1266 madvise stpcpy strnlen strsignal strverscmp \
1267 strtol strtoul strtoll strtoull setenv unsetenv \
1268 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1269 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1270 #include "ansidecl.h"
1271 #include "system.h"])
1273 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1274 #include "ansidecl.h"
1276 #ifdef HAVE_SYS_RESOURCE_H
1277 #include <sys/resource.h>
1281 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1282 #include "ansidecl.h"
1284 #ifdef HAVE_SYS_RESOURCE_H
1285 #include <sys/resource.h>
1287 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1288 [Define to `long' if <sys/resource.h> doesn't define.])])
1290 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1291 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1292 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1293 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1294 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1295 #include "ansidecl.h"
1304 gcc_AC_CHECK_DECLS(times, , ,[
1305 #include "ansidecl.h"
1307 #ifdef HAVE_SYS_TIMES_H
1308 #include <sys/times.h>
1312 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1313 #include "ansidecl.h"
1318 # More time-related stuff.
1319 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1320 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1321 #include "ansidecl.h"
1323 #ifdef HAVE_SYS_TIMES_H
1324 #include <sys/times.h>
1326 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1327 if test $ac_cv_struct_tms = yes; then
1328 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1329 [Define if <sys/times.h> defines struct tms.])
1332 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1333 # revisit after autoconf 2.50.
1334 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1335 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1336 #include "ansidecl.h"
1338 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1339 if test $gcc_cv_type_clock_t = yes; then
1340 AC_DEFINE(HAVE_CLOCK_T, 1,
1341 [Define if <time.h> defines clock_t.])
1344 # Check if F_SETLKW is supported by fcntl.
1345 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1346 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1347 #include <fcntl.h>]], [[
1353 return fcntl (1, F_SETLKW, &fl);]])],
1354 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1355 if test $ac_cv_f_setlkw = yes; then
1356 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1357 [Define if F_SETLKW supported by fcntl.])
1360 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1361 CFLAGS="$saved_CFLAGS"
1362 CXXFLAGS="$saved_CXXFLAGS"
1364 # mkdir takes a single argument on some systems.
1365 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1373 # With Setjmp/Longjmp based exception handling.
1374 AC_ARG_ENABLE(sjlj-exceptions,
1375 [AS_HELP_STRING([--enable-sjlj-exceptions],
1376 [arrange to use setjmp/longjmp exception handling])],
1379 if test $enableval != yes; then
1380 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1385 force_sjlj_exceptions=yes],
1388 force_sjlj_exceptions=yes
1392 force_sjlj_exceptions=yes
1396 force_sjlj_exceptions=no
1399 if test $force_sjlj_exceptions = yes; then
1400 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1401 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1402 [Define 0/1 to force the choice for exception handling model.])
1405 # --------------------------------------------------------
1406 # Build, host, and target specific configuration fragments
1407 # --------------------------------------------------------
1409 # Collect build-machine-specific information.
1410 . ${srcdir}/config.build
1412 # Collect host-machine-specific information.
1413 . ${srcdir}/config.host
1417 # Collect target-machine-specific information.
1418 . ${srcdir}/config.gcc
1420 extra_objs="${host_extra_objs} ${extra_objs}"
1421 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1423 # Default the target-machine variables that were not explicitly set.
1424 if test x"$tm_file" = x
1425 then tm_file=$cpu_type/$cpu_type.h; fi
1427 if test x"$extra_headers" = x
1428 then extra_headers=; fi
1430 if test x$md_file = x
1431 then md_file=$cpu_type/$cpu_type.md; fi
1433 if test x$out_file = x
1434 then out_file=$cpu_type/$cpu_type.c; fi
1436 if test x"$tmake_file" = x
1437 then tmake_file=$cpu_type/t-$cpu_type
1440 # Support --enable-initfini-array.
1441 if test x$enable_initfini_array != xno; then
1442 tm_file="${tm_file} initfini-array.h"
1445 if test x"$dwarf2" = xyes
1446 then tm_file="$tm_file tm-dwarf2.h"
1449 # Say what files are being used for the output code and MD file.
1450 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1451 echo "Using \`$srcdir/config/$md_file' as machine description file."
1453 # If any of the xm_file variables contain nonexistent files, warn
1454 # about them and drop them.
1457 for x in $build_xm_file; do
1458 if test -f $srcdir/config/$x
1460 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1466 for x in $host_xm_file; do
1467 if test -f $srcdir/config/$x
1469 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1475 for x in $xm_file; do
1476 if test -f $srcdir/config/$x
1478 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1484 for f in $tm_file; do
1487 if test $count = ax; then
1488 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1490 echo "Using the following target machine macro files:"
1491 for f in $tm_file; do
1492 echo " $srcdir/config/$f"
1496 if test x$use_long_long_for_widest_fast_int = xyes; then
1497 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1498 [Define to 1 if the 'long long' type is wider than 'long' but still
1499 efficiently supported by the host hardware.])
1502 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1503 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1505 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1506 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1509 for f in $host_xm_file; do
1512 if test $count = a; then
1514 elif test $count = ax; then
1515 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1517 echo "Using the following host machine macro files:"
1518 for f in $host_xm_file; do
1519 echo " $srcdir/config/$f"
1522 echo "Using ${out_host_hook_obj} for host machine hooks."
1524 if test "$host_xm_file" != "$build_xm_file"; then
1526 for f in $build_xm_file; do
1529 if test $count = a; then
1531 elif test $count = ax; then
1532 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1534 echo "Using the following build machine macro files:"
1535 for f in $build_xm_file; do
1536 echo " $srcdir/config/$f"
1541 if test -n "$configured_native_system_header_dir"; then
1542 native_system_header_dir=$configured_native_system_header_dir
1544 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1545 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1549 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1550 gcc_cv_mcontext_underscores,
1552 #include <sys/cdefs.h>
1553 #include <sys/signal.h>
1554 #include <ucontext.h>
1555 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1557 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1558 if test $gcc_cv_mcontext_underscores = yes; then
1559 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1560 [mcontext_t fields start with __])
1569 # Check if a valid thread package
1570 case ${enable_threads} in
1573 target_thread_file='single'
1577 target_thread_file='single'
1579 aix | dce | lynx | mipssde | posix | rtems | \
1580 single | tpf | vxworks | win32)
1581 target_thread_file=${enable_threads}
1584 echo "${enable_threads} is an unknown thread package" 1>&2
1589 if test x${thread_file} = x; then
1590 # No thread file set by target-specific clauses in config.gcc,
1591 # so use file chosen by default logic above
1592 thread_file=${target_thread_file}
1600 if test x$enable___cxa_atexit = xyes || \
1601 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1602 if test x$host = x$target; then
1604 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1605 # keyed to flag_use_cxa_atexit
1613 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1614 [echo "__cxa_atexit can't be enabled on this target"])
1618 # We can't check for __cxa_atexit when building a cross, so assume
1622 if test x$use_cxa_atexit = xyes; then
1623 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1624 [Define if you want to use __cxa_atexit, rather than atexit, to
1625 register C++ destructors for local statics and global objects.
1626 This is essential for fully standards-compliant handling of
1627 destructors, but requires __cxa_atexit in libc.])
1631 # Look for a file containing extra machine modes.
1632 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1633 extra_modes_file='$(srcdir)'/config/${extra_modes}
1634 AC_SUBST(extra_modes_file)
1635 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1636 [Define to the name of a file containing a list of extra machine modes
1637 for this architecture.])
1640 # Convert extra_options into a form suitable for Makefile use.
1643 for f in $extra_options; do
1644 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1645 all_opt_files="$all_opt_files $srcdir/config/$f"
1647 AC_SUBST(extra_opt_files)
1649 # auto-host.h is the file containing items generated by autoconf and is
1650 # the first file included by config.h.
1651 # If host=build, it is correct to have bconfig include auto-host.h
1652 # as well. If host!=build, we are in error and need to do more
1653 # work to find out the build config parameters.
1654 if test x$host = x$build
1656 build_auto=auto-host.h
1658 # We create a subdir, then run autoconf in the subdir.
1659 # To prevent recursion we set host and build for the new
1660 # invocation of configure to the build for this invocation
1667 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1668 *) realsrcdir=../${srcdir};;
1670 # Clearing GMPINC is necessary to prevent host headers being
1671 # used by the build compiler. Defining GENERATOR_FILE stops
1672 # system.h from including gmp.h.
1673 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1674 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1675 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1676 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1677 ${realsrcdir}/configure \
1678 --enable-languages=${enable_languages-all} \
1679 --target=$target_alias --host=$build_alias --build=$build_alias
1681 # We just finished tests for the build machine, so rename
1682 # the file auto-build.h in the gcc directory.
1683 mv auto-host.h ../auto-build.h
1686 build_auto=auto-build.h
1688 AC_SUBST(build_subdir)
1690 tm_file="${tm_file} defaults.h"
1691 tm_p_file="${tm_p_file} tm-preds.h"
1692 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1693 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1694 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1695 # put this back in temporarily.
1696 xm_file="auto-host.h ansidecl.h ${xm_file}"
1703 # Compile in configure arguments.
1704 if test -f configargs.h ; then
1705 # Being re-configured.
1706 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1707 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1709 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1712 # Double all backslashes and backslash all quotes to turn
1713 # gcc_config_arguments into a C string.
1714 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1715 $gcc_config_arguments
1717 gcc_config_arguments_str=`cat conftest.out`
1720 cat > configargs.h <<EOF
1721 /* Generated automatically. */
1722 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1723 static const char thread_model[] = "$thread_file";
1725 static const struct {
1726 const char *name, *value;
1727 } configure_default_options[] = $configure_default_options;
1732 gcc_BASEVER=`cat $srcdir/BASE-VER`
1733 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1734 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1735 if test -f $srcdir/REVISION ; then
1736 gcc_REVISION=`cat $srcdir/REVISION`
1740 cat > plugin-version.h <<EOF
1741 #include "configargs.h"
1743 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1744 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1745 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1746 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1748 static char basever[] = "$gcc_BASEVER";
1749 static char datestamp[] = "$gcc_DATESTAMP";
1750 static char devphase[] = "$gcc_DEVPHASE";
1751 static char revision[] = "$gcc_REVISION";
1753 /* FIXME plugins: We should make the version information more precise.
1754 One way to do is to add a checksum. */
1756 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1758 configuration_arguments};
1762 # Internationalization
1763 ZW_GNU_GETTEXT_SISTER_DIR
1765 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1766 # -liconv on the link line twice.
1767 case "$LIBINTL" in *$LIBICONV*)
1771 AC_ARG_ENABLE(secureplt,
1772 [AS_HELP_STRING([--enable-secureplt],
1773 [enable -msecure-plt by default for PowerPC])],
1776 AC_ARG_ENABLE(leading-mingw64-underscores,
1777 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1778 [enable leading underscores on 64 bit mingw targets]),
1780 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1781 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1782 [Define if we should use leading underscore on 64 bit mingw targets])])
1785 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1788 AC_ARG_ENABLE(frame-pointer,
1789 [AS_HELP_STRING([--enable-frame-pointer],
1790 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1793 linux* | darwin[[8912]]*)
1794 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1796 enable_frame_pointer=no
1799 enable_frame_pointer=yes
1804 # Windows32 Registry support for specifying GCC installation paths.
1805 AC_ARG_ENABLE(win32-registry,
1806 [AS_HELP_STRING([--disable-win32-registry],
1807 [disable lookup of installation paths in the
1808 Registry on Windows hosts])
1809 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1810 AS_HELP_STRING([--enable-win32-registry=KEY],
1811 [use KEY instead of GCC version as the last portion
1812 of the registry key])],,)
1815 win32 | pe | cygwin* | mingw32*)
1816 if test "x$enable_win32_registry" != xno; then
1817 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1820 if test "x$enable_win32_registry" != xno; then
1821 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1822 [Define to 1 if installation paths should be looked up in the Windows
1823 Registry. Ignored on non-Windows hosts.])
1825 if test "x$enable_win32_registry" != xyes \
1826 && test "x$enable_win32_registry" != x; then
1827 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1828 [Define to be the last component of the Windows registry key under which
1829 to look for installation paths. The full key used will be
1830 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1831 The default is the GCC version number.])
1837 # Get an absolute path to the GCC top-level source directory
1838 holddir=`${PWDCMD-pwd}`
1840 topdir=`${PWDCMD-pwd}`
1843 # Conditionalize the makefile for this host machine.
1845 for f in ${host_xmake_file}
1847 if test -f ${srcdir}/config/$f
1849 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1853 # Conditionalize the makefile for this target machine.
1855 for f in ${tmake_file}
1857 if test -f ${srcdir}/config/$f
1859 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1862 tmake_file="${tmake_file_}"
1864 out_object_file=`basename $out_file .c`.o
1865 common_out_object_file=`basename $common_out_file .c`.o
1867 tm_file_list="options.h"
1868 tm_include_list="options.h insn-constants.h"
1869 for f in $tm_file; do
1872 f=`echo $f | sed 's/^..//'`
1873 tm_file_list="${tm_file_list} $f"
1874 tm_include_list="${tm_include_list} $f"
1877 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1878 tm_include_list="${tm_include_list} $f"
1881 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1882 tm_include_list="${tm_include_list} config/$f"
1889 for f in $tm_p_file; do
1892 tm_p_file_list="${tm_p_file_list} $f"
1893 tm_p_include_list="${tm_p_include_list} $f"
1896 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1897 tm_p_include_list="${tm_p_include_list} config/$f"
1903 for f in $xm_file; do
1906 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1907 xm_include_list="${xm_include_list} $f"
1910 xm_file_list="${xm_file_list} $f"
1911 xm_include_list="${xm_include_list} $f"
1914 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1915 xm_include_list="${xm_include_list} config/$f"
1921 host_xm_include_list=
1922 for f in $host_xm_file; do
1925 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1926 host_xm_include_list="${host_xm_include_list} $f"
1929 host_xm_file_list="${host_xm_file_list} $f"
1930 host_xm_include_list="${host_xm_include_list} $f"
1933 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1934 host_xm_include_list="${host_xm_include_list} config/$f"
1940 for f in $build_xm_file; do
1943 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1944 build_xm_include_list="${build_xm_include_list} $f"
1946 auto-build.h | auto-host.h )
1947 build_xm_file_list="${build_xm_file_list} $f"
1948 build_xm_include_list="${build_xm_include_list} $f"
1951 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1952 build_xm_include_list="${build_xm_include_list} config/$f"
1957 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1958 # cross-compiler which does not use the native headers and libraries.
1959 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1960 CROSS= AC_SUBST(CROSS)
1961 ALL=all.internal AC_SUBST(ALL)
1962 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1964 if test "x$with_build_sysroot" != x; then
1965 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1967 # This value is used, even on a native system, because
1968 # CROSS_SYSTEM_HEADER_DIR is just
1969 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1970 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1973 if test x$host != x$target
1975 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1977 SYSTEM_HEADER_DIR=$build_system_header_dir
1978 case "$host","$target" in
1979 # Darwin crosses can use the host system's libraries and headers,
1980 # because of the fat library support. Of course, it must be the
1981 # same version of Darwin on both sides. Allow the user to
1982 # just say --target=foo-darwin without a version number to mean
1983 # "the version on this system".
1984 *-*-darwin*,*-*-darwin*)
1985 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1986 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1987 if test $hostos = $targetos -o $targetos = darwin ; then
1989 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1994 i?86-*-*,x86_64-*-* \
1995 | powerpc*-*-*,powerpc64*-*-*)
1996 CROSS="$CROSS -DNATIVE_CROSS" ;;
2001 if test "x$with_headers" = x; then
2008 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2009 SYSTEM_HEADER_DIR=$build_system_header_dir
2012 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2013 if test "x$with_headers" != x; then
2014 target_header_dir=$with_headers
2015 elif test "x$with_sysroot" = x; then
2016 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2017 elif test "x$with_build_sysroot" != "x"; then
2018 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2019 elif test "x$with_sysroot" = xyes; then
2020 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2022 target_header_dir="${with_sysroot}${native_system_header_dir}"
2025 target_header_dir=${native_system_header_dir}
2028 # If this is a cross-compiler that does not
2029 # have its own set of headers then define
2032 # If this is using newlib, without having the headers available now,
2033 # then define inhibit_libc in LIBGCC2_CFLAGS.
2034 # This prevents libgcc2 from containing any code which requires libc
2036 : ${inhibit_libc=false}
2037 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2038 test x$with_newlib = xyes ; } &&
2039 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2042 AC_SUBST(inhibit_libc)
2044 # When building gcc with a cross-compiler, we need to adjust things so
2045 # that the generator programs are still built with the native compiler.
2046 # Also, we cannot run fixincludes.
2048 # These are the normal (build=host) settings:
2049 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2050 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2051 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2052 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2053 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2054 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2056 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2057 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2059 # And these apply if build != host, or we are generating coverage data
2060 if test x$build != x$host || test "x$coverage_flags" != x
2062 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2063 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2064 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2066 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2067 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2068 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2069 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2071 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2072 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2074 # Expand extra_headers to include complete path.
2075 # This substitutes for lots of t-* files.
2077 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2078 for file in ${extra_headers} ; do
2079 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2082 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2083 if test x"$use_gcc_tgmath" = xyes
2084 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2087 # Define collect2 in Makefile.
2088 case $host_can_use_collect2 in
2090 *) collect2='collect2$(exeext)' ;;
2092 AC_SUBST([collect2])
2094 # Add a definition of USE_COLLECT2 if system wants one.
2095 case $use_collect2 in
2096 no) use_collect2= ;;
2099 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2100 xm_defines="${xm_defines} USE_COLLECT2"
2101 case $host_can_use_collect2 in
2103 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2109 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2110 [Define to the name of the LTO plugin DSO that must be
2111 passed to the linker's -plugin=LIB option.])
2113 # ---------------------------
2114 # Assembler & linker features
2115 # ---------------------------
2117 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2118 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2119 # However when ld-new is first executed from the build tree, libtool will
2120 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2121 # to the build tree. While doing this we need to use the previous-stage
2122 # linker, or we have an infinite loop. The presence of a shell script as
2123 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2124 # the gcc/collect-ld script. So we need to know how libtool works, or
2125 # exec-tool will fail.
2127 m4_defun([_LT_CONFIG_COMMANDS], [])
2130 AC_SUBST(enable_fast_install)
2132 # Identify the assembler which will work hand-in-glove with the newly
2133 # built GCC, so that we can examine its features. This is the assembler
2134 # which will be driven by the driver program.
2136 # If build != host, and we aren't building gas in-tree, we identify a
2137 # build->target assembler and hope that it will have the same features
2138 # as the host->target assembler we'll be using.
2139 gcc_cv_gas_major_version=
2140 gcc_cv_gas_minor_version=
2141 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2143 m4_pattern_allow([AS_FOR_TARGET])dnl
2144 AS_VAR_SET_IF(gcc_cv_as,, [
2145 if test -x "$DEFAULT_ASSEMBLER"; then
2146 gcc_cv_as="$DEFAULT_ASSEMBLER"
2147 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2148 && test -f ../gas/Makefile \
2149 && test x$build = x$host; then
2150 gcc_cv_as=../gas/as-new$build_exeext
2151 elif test -x as$build_exeext; then
2152 # Build using assembler in the current directory.
2153 gcc_cv_as=./as$build_exeext
2154 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2155 gcc_cv_as="$AS_FOR_TARGET"
2157 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2160 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2161 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2162 case "$ORIGINAL_AS_FOR_TARGET" in
2163 ./as | ./as$build_exeext) ;;
2164 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2167 AC_MSG_CHECKING(what assembler to use)
2168 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2169 # Single tree build which includes gas. We want to prefer it
2170 # over whatever linker top-level may have detected, since
2171 # we'll use what we're building after installation anyway.
2172 AC_MSG_RESULT(newly built gas)
2174 _gcc_COMPUTE_GAS_VERSION
2175 in_tree_gas_is_elf=no
2176 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2177 || (grep 'obj_format = multi' ../gas/Makefile \
2178 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2180 in_tree_gas_is_elf=yes
2183 AC_MSG_RESULT($gcc_cv_as)
2189 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2190 [case "${enableval}" in
2196 install_gold_as_default=no
2198 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2199 [case "${enableval}" in
2201 install_gold_as_default=yes
2204 if test x${default_ld} != x; then
2205 install_gold_as_default=yes
2211 AC_MSG_ERROR([invalid --enable-gold argument])
2215 # Identify the linker which will work hand-in-glove with the newly
2216 # built GCC, so that we can examine its features. This is the linker
2217 # which will be driven by the driver program.
2219 # If build != host, and we aren't building gas in-tree, we identify a
2220 # build->target linker and hope that it will have the same features
2221 # as the host->target linker we'll be using.
2222 gcc_cv_gld_major_version=
2223 gcc_cv_gld_minor_version=
2224 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2225 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2226 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2228 AS_VAR_SET_IF(gcc_cv_ld,, [
2229 if test -x "$DEFAULT_LINKER"; then
2230 gcc_cv_ld="$DEFAULT_LINKER"
2231 elif test $install_gold_as_default = yes \
2232 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2233 && test -f ../gold/Makefile \
2234 && test x$build = x$host; then
2235 gcc_cv_ld=../gold/ld-new$build_exeext
2236 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2237 && test -f ../ld/Makefile \
2238 && test x$build = x$host; then
2239 gcc_cv_ld=../ld/ld-new$build_exeext
2240 elif test -x collect-ld$build_exeext; then
2241 # Build using linker in the current directory.
2242 gcc_cv_ld=./collect-ld$build_exeext
2243 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2244 gcc_cv_ld="$LD_FOR_TARGET"
2246 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2249 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2250 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2251 # if the PLUGIN_LD is set ld-new, just have it as ld
2252 # as that is the installed named.
2253 if test x$PLUGIN_LD_SUFFIX = xld-new \
2254 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2257 AC_ARG_WITH(plugin-ld,
2258 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2259 [if test x"$withval" != x; then
2260 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2261 PLUGIN_LD_SUFFIX="$withval"
2263 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2264 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2266 # Check to see if we are using gold instead of ld
2267 AC_MSG_CHECKING(whether we are using gold)
2269 if test x$gcc_cv_ld != x; then
2270 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2271 | grep "GNU gold" > /dev/null; then
2275 AC_MSG_RESULT($ld_is_gold)
2277 AC_MSG_CHECKING(gold linker with split stack support as non default)
2278 # Check to see if default ld is not gold, but gold is
2279 # available and has support for split stack. If gcc was configured
2280 # with gold then no checking is done.
2282 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2284 # For platforms other than powerpc64*, enable as appropriate.
2287 ld_gold=`which ${gcc_cv_ld}.gold`
2288 # Make sure this gold has minimal split stack support
2289 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2290 ld_vers=`$ld_gold --version | sed 1q`
2291 gold_vers=`echo $ld_vers | sed -n \
2292 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2294 # check that the gold version contains the complete split stack support
2295 # on powerpc64 big and little endian
2297 case "$gold_vers" in
2298 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2300 *) gold_non_default=no
2306 if test $gold_non_default = yes; then
2307 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2308 [Define if the gold linker supports split stack and is available as a non-default])
2311 AC_MSG_RESULT($gold_non_default)
2313 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2314 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2315 case "$ORIGINAL_LD_FOR_TARGET" in
2316 ./collect-ld | ./collect-ld$build_exeext) ;;
2317 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2320 AC_MSG_CHECKING(what linker to use)
2321 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2322 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2323 # Single tree build which includes ld. We want to prefer it
2324 # over whatever linker top-level may have detected, since
2325 # we'll use what we're building after installation anyway.
2326 AC_MSG_RESULT(newly built ld)
2328 in_tree_ld_is_elf=no
2329 if (grep 'EMUL = .*elf' ../ld/Makefile \
2330 || grep 'EMUL = .*linux' ../ld/Makefile \
2331 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2332 in_tree_ld_is_elf=yes
2333 elif test "$ld_is_gold" = yes; then
2334 in_tree_ld_is_elf=yes
2336 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
2339 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2340 if test x$gcc_cv_gld_version != x; then
2344 case $gcc_cv_gld_version in
2347 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2350 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2351 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2353 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2354 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2356 AC_MSG_RESULT($gcc_cv_ld)
2358 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2359 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2360 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2363 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2364 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2366 # Figure out what nm we will be using.
2367 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2368 AS_VAR_SET_IF(gcc_cv_nm,, [
2369 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2370 && test -f ../binutils/Makefile \
2371 && test x$build = x$host; then
2372 gcc_cv_nm=../binutils/nm-new$build_exeext
2373 elif test -x nm$build_exeext; then
2374 gcc_cv_nm=./nm$build_exeext
2375 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2376 gcc_cv_nm="$NM_FOR_TARGET"
2378 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2381 AC_MSG_CHECKING(what nm to use)
2382 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2383 # Single tree build which includes binutils.
2384 AC_MSG_RESULT(newly built nm)
2387 AC_MSG_RESULT($gcc_cv_nm)
2391 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2392 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2393 case "$ORIGINAL_NM_FOR_TARGET" in
2394 ./nm | ./nm$build_exeext) ;;
2395 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2399 # Figure out what objdump we will be using.
2400 AS_VAR_SET_IF(gcc_cv_objdump,, [
2401 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2402 && test -f ../binutils/Makefile \
2403 && test x$build = x$host; then
2404 # Single tree build which includes binutils.
2405 gcc_cv_objdump=../binutils/objdump$build_exeext
2406 elif test -x objdump$build_exeext; then
2407 gcc_cv_objdump=./objdump$build_exeext
2408 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2409 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2411 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2414 AC_MSG_CHECKING(what objdump to use)
2415 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2416 # Single tree build which includes binutils.
2417 AC_MSG_RESULT(newly built objdump)
2418 elif test x$gcc_cv_objdump = x; then
2419 AC_MSG_RESULT(not found)
2421 AC_MSG_RESULT($gcc_cv_objdump)
2424 # Figure out what readelf we will be using.
2425 AS_VAR_SET_IF(gcc_cv_readelf,, [
2426 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2427 && test -f ../binutils/Makefile \
2428 && test x$build = x$host; then
2429 # Single tree build which includes binutils.
2430 gcc_cv_readelf=../binutils/readelf$build_exeext
2431 elif test -x readelf$build_exeext; then
2432 gcc_cv_readelf=./readelf$build_exeext
2433 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2434 gcc_cv_readelf="$READELF_FOR_TARGET"
2436 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2439 AC_MSG_CHECKING(what readelf to use)
2440 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2441 # Single tree build which includes binutils.
2442 AC_MSG_RESULT(newly built readelf)
2443 elif test x$gcc_cv_readelf = x; then
2444 AC_MSG_RESULT(not found)
2446 AC_MSG_RESULT($gcc_cv_readelf)
2449 # Figure out what assembler alignment features are present.
2450 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2454 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2455 [Define if your assembler supports .balign and .p2align.])])
2457 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2460 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2461 [Define if your assembler supports specifying the maximum number
2462 of bytes to skip when using the GAS .p2align command.])])
2464 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2467 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2468 [Define if your assembler supports .literal16.])])
2470 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2472 [conftest_label1: .word 0
2474 conftest_label2: .word 0
2476 [if test x$gcc_cv_nm != x; then
2477 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2478 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2479 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2481 else gcc_cv_as_subsection_m1=yes
2483 rm -f conftest.nm1 conftest.nm2
2485 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2486 [Define if your assembler supports .subsection and .subsection -1 starts
2487 emitting at the beginning of your section.])])
2489 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2492 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2494 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2496 [ .weakref foobar, barfnot],,
2497 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2499 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2502 .NSUBSPA $CODE$,COMDAT],,
2503 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2505 # .hidden needs to be supported in both the assembler and the linker,
2506 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2507 # This is irritatingly difficult to feature test for; we have to check the
2508 # date string after the version number. If we've got an in-tree
2509 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2511 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2512 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2518 # Darwin as has some visibility support, though with a different syntax.
2519 gcc_cv_as_hidden=yes
2523 # gnu_indirect_function type is an extension proposed at
2524 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2525 # selection of function implementation
2526 AC_ARG_ENABLE(gnu-indirect-function,
2527 [AS_HELP_STRING([--enable-gnu-indirect-function],
2528 [enable the use of the @gnu_indirect_function to glibc systems])],
2529 [case $enable_gnu_indirect_function in
2531 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2532 Valid choices are 'yes' and 'no'.]) ;;
2534 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2536 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2537 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2538 [Define if your system supports gnu indirect functions.])
2542 if test $in_tree_ld != yes ; then
2543 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2544 if echo "$ld_ver" | grep GNU > /dev/null; then
2545 if test x"$ld_is_gold" = xyes; then
2546 # GNU gold --version looks like this:
2548 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2550 # We extract the binutils version which is more familiar and specific
2551 # than the gold version.
2552 ld_vers=`echo $ld_ver | sed -n \
2553 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2555 # GNU ld --version looks like this:
2557 # GNU ld (GNU Binutils) 2.21.51.20110225
2558 ld_vers=`echo $ld_ver | sed -n \
2559 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2561 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2562 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2563 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2564 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2568 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2571 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2572 # /usr/ccs/bin/ld has been configured.
2573 ld_ver=`$gcc_cv_ld -V 2>&1`
2574 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2575 ld_vers=`echo $ld_ver | sed -n \
2576 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2577 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2578 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2586 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2587 [[if test $in_tree_ld = yes ; then
2589 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2590 && test $in_tree_ld_is_elf = yes; then
2591 gcc_cv_ld_hidden=yes
2594 gcc_cv_ld_hidden=yes
2595 if test x"$ld_is_gold" = xyes; then
2597 elif echo "$ld_ver" | grep GNU > /dev/null; then
2599 mmix-knuth-mmixware)
2600 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2604 if test 0"$ld_date" -lt 20020404; then
2605 if test -n "$ld_date"; then
2606 # If there was date string, but was earlier than 2002-04-04, fail
2608 elif test -z "$ld_vers"; then
2609 # If there was no date string nor ld version number, something is wrong
2612 test -z "$ld_vers_patch" && ld_vers_patch=0
2613 if test "$ld_vers_major" -lt 2; then
2615 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2616 gcc_cv_ld_hidden="no"
2617 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2625 # Darwin ld has some visibility support.
2626 gcc_cv_ld_hidden=yes
2628 hppa64*-*-hpux* | ia64*-*-hpux*)
2629 gcc_cv_ld_hidden=yes
2631 *-*-solaris2.1[0-9]*)
2632 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2633 # .symbolic was only added in Solaris 9 12/02.
2634 gcc_cv_ld_hidden=yes
2642 libgcc_visibility=no
2643 AC_SUBST(libgcc_visibility)
2644 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2645 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2646 libgcc_visibility=yes
2647 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2648 [Define if your assembler and linker support .hidden.])
2651 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2652 gcc_cv_ld_ro_rw_mix=unknown
2653 if test $in_tree_ld = yes ; then
2654 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2655 && test $in_tree_ld_is_elf = yes; then
2656 gcc_cv_ld_ro_rw_mix=read-write
2658 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2659 echo '.section myfoosect, "a"' > conftest1.s
2660 echo '.section myfoosect, "aw"' > conftest2.s
2661 echo '.byte 1' >> conftest2.s
2662 echo '.section myfoosect, "a"' > conftest3.s
2663 echo '.byte 0' >> conftest3.s
2664 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2665 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2666 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2667 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2668 conftest2.o conftest3.o > /dev/null 2>&1; then
2669 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2670 | sed -e '/myfoosect/!d' -e N`
2671 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2672 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2673 gcc_cv_ld_ro_rw_mix=read-only
2675 gcc_cv_ld_ro_rw_mix=read-write
2680 rm -f conftest.* conftest[123].*
2683 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2684 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2685 [Define if your linker links a mix of read-only
2686 and read-write sections into a read-write section.])
2688 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2690 gcc_AC_INITFINI_ARRAY
2692 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2693 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2701 [[# GAS versions before 2.11 do not support uleb128,
2702 # despite appearing to.
2703 # ??? There exists an elf-specific test that will crash
2704 # the assembler. Perhaps it's better to figure out whether
2705 # arbitrary sections are supported and try the test.
2706 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2707 if echo "$as_ver" | grep GNU > /dev/null; then
2708 as_vers=`echo $as_ver | sed -n \
2709 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2710 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2711 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2712 if test $as_major -eq 2 && test $as_minor -lt 11
2714 else gcc_cv_as_leb128=yes
2717 [AC_DEFINE(HAVE_AS_LEB128, 1,
2718 [Define if your assembler supports .sleb128 and .uleb128.])])
2720 # Check if we have assembler support for unwind directives.
2721 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2728 .cfi_escape 1, 2, 3, 4, 5
2732 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2733 # read-only and read-write sections, we need to make sure that the
2734 # assembler used emits read-write .eh_frame sections.
2735 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2736 if test "x$gcc_cv_objdump" != x; then
2737 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2738 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2739 gcc_cv_as_cfi_directive=no
2742 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2743 # On Solaris/x86, make sure that GCC and assembler agree on using
2744 # read-only .eh_frame sections for 64-bit.
2745 if test x$gas = xyes; then
2746 as_ix86_64_opt="--64"
2748 as_ix86_64_opt="-xarch=amd64"
2750 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2751 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2752 sed -e /.eh_frame/!d -e N | \
2753 grep READONLY > /dev/null; then
2754 gcc_cv_as_cfi_directive=yes
2756 gcc_cv_as_cfi_directive=no
2760 gcc_cv_as_cfi_directive=yes
2765 # no objdump, err on the side of caution
2766 gcc_cv_as_cfi_directive=no
2769 gcc_cv_as_cfi_directive=yes
2773 gcc_cv_as_cfi_directive=yes
2776 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2777 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2781 .cfi_adjust_cfa_offset 64
2783 .cfi_adjust_cfa_offset 128
2786 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2787 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2788 gcc_cv_as_cfi_advance_working=yes
2792 # no objdump, err on the side of caution
2793 gcc_cv_as_cfi_advance_working=no
2795 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2796 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2797 [`if test $gcc_cv_as_cfi_directive = yes \
2798 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2799 [Define 0/1 if your assembler supports CFI directives.])
2801 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2802 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2803 gcc_cv_as_cfi_personality_directive, ,,
2806 .cfi_personality 0, symbol
2808 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2809 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2810 then echo 1; else echo 0; fi`],
2811 [Define 0/1 if your assembler supports .cfi_personality.])
2813 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2814 gcc_cv_as_cfi_sections_directive, ,,
2816 .cfi_sections .debug_frame, .eh_frame
2820 win32 | pe | cygwin* | mingw32*)
2821 # Need to check that we generated the correct relocation for the
2822 # .debug_frame section. This was fixed for binutils 2.21.
2823 gcc_cv_as_cfi_sections_directive=no
2824 if test "x$gcc_cv_objdump" != x; then
2825 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2826 grep secrel > /dev/null; then
2827 gcc_cv_as_cfi_sections_directive=yes
2832 gcc_cv_as_cfi_sections_directive=yes
2835 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2836 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2837 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2838 then echo 1; else echo 0; fi`],
2839 [Define 0/1 if your assembler supports .cfi_sections.])
2841 # GAS versions up to and including 2.11.0 may mis-optimize
2843 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2851 .section .eh_frame,"aw",@progbits
2853 .4byte .LECIE1-.LSCIE1
2867 .4byte .LEFDE1-.LASFDE1
2869 .4byte .LASFDE1-__FRAME_BEGIN__
2877 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2878 cat > conftest.lit <<EOF
2879 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2880 0010 01000000 12000000 18000000 00000000 ................
2881 0020 08000000 04080000 0044 .........D @&t@
2883 cat > conftest.big <<EOF
2884 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2885 0010 00000001 00000012 00000018 00000000 ................
2886 0020 00000008 04000000 0844 .........D @&t@
2888 # If the assembler didn't choke, and we can objdump,
2889 # and we got the correct data, then succeed.
2890 # The text in the here-document typically retains its unix-style line
2891 # endings, while the output of objdump will use host line endings.
2892 # Therefore, use diff -b for the comparisons.
2893 if test x$gcc_cv_objdump != x \
2894 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2895 | tail -3 > conftest.got \
2896 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2897 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2899 gcc_cv_as_eh_frame=yes
2900 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2901 gcc_cv_as_eh_frame=buggy
2903 # Uh oh, what do we do now?
2904 gcc_cv_as_eh_frame=no
2907 if test $gcc_cv_as_eh_frame = buggy; then
2908 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2909 [Define if your assembler mis-optimizes .eh_frame data.])
2912 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2913 [elf,2,12,0], [--fatal-warnings],
2914 [.section .rodata.str, "aMS", @progbits, 1])
2915 if test $gcc_cv_as_shf_merge = no; then
2916 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2917 [elf,2,12,0], [--fatal-warnings],
2918 [.section .rodata.str, "aMS", %progbits, 1])
2920 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2921 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2922 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2924 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2925 [.stabs "gcc2_compiled.",60,0,0,0],,
2926 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2927 [Define if your assembler supports .stabs.])])
2929 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2930 gcc_cv_as_comdat_group,
2931 [elf,2,16,0], [--fatal-warnings],
2932 [.section .text,"axG",@progbits,.foo,comdat])
2933 if test $gcc_cv_as_comdat_group = yes; then
2934 gcc_cv_as_comdat_group_percent=no
2935 gcc_cv_as_comdat_group_group=no
2937 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2938 gcc_cv_as_comdat_group_percent,
2939 [elf,2,16,0], [--fatal-warnings],
2940 [.section .text,"axG",%progbits,.foo,comdat])
2941 if test $gcc_cv_as_comdat_group_percent = yes; then
2942 gcc_cv_as_comdat_group_group=no
2945 # Sun as uses a completely different syntax.
2950 .group foo,".text%foo",#comdat
2951 .section ".text%foo", #alloc,#execinstr,#progbits
2956 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2958 .group foo,.text%foo,#comdat
2959 .section .text%foo, "ax", @progbits
2965 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2966 gcc_cv_as_comdat_group_group,
2970 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2971 gcc_cv_as_comdat_group_group=no
2975 if test x"$ld_is_gold" = xyes; then
2977 elif test $in_tree_ld = yes ; then
2979 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2980 && test $in_tree_ld_is_elf = yes; then
2983 elif echo "$ld_ver" | grep GNU > /dev/null; then
2985 if test 0"$ld_date" -lt 20050308; then
2986 if test -n "$ld_date"; then
2987 # If there was date string, but was earlier than 2005-03-08, fail
2989 elif test "$ld_vers_major" -lt 2; then
2991 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2998 *-*-solaris2.1[1-9]*)
3000 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3001 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3004 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3005 # least ld version 1.2267.
3006 if test "$ld_vers_major" -gt 1; then
3008 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3010 elif test "$ld_vers_minor" -ge 2267; then
3015 # Assume linkers other than GNU ld don't support COMDAT group.
3021 # Allow overriding the automatic COMDAT group tests above.
3022 AC_ARG_ENABLE(comdat,
3023 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3024 [comdat_group="$enable_comdat"])
3025 if test $comdat_group = no; then
3026 gcc_cv_as_comdat_group=no
3027 gcc_cv_as_comdat_group_percent=no
3028 gcc_cv_as_comdat_group_group=no
3030 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3031 [`if test $gcc_cv_as_comdat_group = yes \
3032 || test $gcc_cv_as_comdat_group_percent = yes \
3033 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3034 [Define 0/1 if your assembler and linker support COMDAT groups.])
3036 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3037 gcc_cv_as_discriminator,
3041 .loc 1 1 0 discriminator 1],,
3042 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3043 [Define if your assembler supports the .loc discriminator sub-directive.])])
3045 # Thread-local storage - the check is heavily parameterized.
3054 .section ".tdata","awT",@progbits
3057 ldq $27,__tls_get_addr($29) !literal!1
3058 lda $16,foo($29) !tlsgd!1
3059 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3060 ldq $27,__tls_get_addr($29) !literal!2
3061 lda $16,foo($29) !tlsldm!2
3062 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3063 ldq $1,foo($29) !gotdtprel
3064 ldah $2,foo($29) !dtprelhi
3065 lda $3,foo($2) !dtprello
3066 lda $4,foo($29) !dtprel
3067 ldq $1,foo($29) !gottprel
3068 ldah $2,foo($29) !tprelhi
3069 lda $3,foo($2) !tprello
3070 lda $4,foo($29) !tprel'
3073 tls_as_opt=--fatal-warnings
3075 cris-*-*|crisv32-*-*)
3077 .section ".tdata","awT",@progbits
3084 tls_as_opt=--fatal-warnings
3088 .section ".tdata","awT",@progbits
3100 .section ".tdata","awT",@progbits
3104 addil LT%foo-$tls_gdidx$,gp
3105 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3108 addil LT%foo-$tls_ldidx$,gp
3110 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3111 addil LR%foo-$tls_dtpoff$,%ret0
3112 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3114 addil LT%foo-$tls_ieoff$,gp
3115 ldw RT%foo-$tls_ieoff$(%r1),%t2
3118 addil LR%foo-$tls_leoff$,%t1
3119 ldo RR%foo-$tls_leoff$(%r1),%t2'
3122 tls_as_opt=--fatal-warnings
3126 .section ".tdata","awT",%progbits
3137 i[34567]86-*-* | x86_64-*-*)
3139 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3146 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3148 .section .tdata,"awt",@progbits'
3153 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3154 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3158 .section ".tdata","awT",@progbits'
3162 tls_as_opt="--fatal-warnings"
3166 conftest_s="$conftest_s
3170 leal foo@tlsgd(,%ebx,1), %eax
3171 leal foo@tlsldm(%ebx), %eax
3172 leal foo@dtpoff(%eax), %edx
3173 movl foo@gottpoff(%ebx), %eax
3174 subl foo@gottpoff(%ebx), %eax
3175 addl foo@gotntpoff(%ebx), %eax
3176 movl foo@indntpoff, %eax
3177 movl \$foo@tpoff, %eax
3178 subl \$foo@tpoff, %eax
3179 leal foo@ntpoff(%ecx), %eax"
3182 if test x$on_solaris = xyes; then
3184 yes) tls_as_opt="$tls_as_opt --64" ;;
3185 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3188 conftest_s="$conftest_s
3192 leaq foo@tlsgd(%rip), %rdi
3193 leaq foo@tlsld(%rip), %rdi
3194 leaq foo@dtpoff(%rax), %rdx
3195 movq foo@gottpoff(%rip), %rax
3196 movq \$foo@tpoff, %rax"
3202 .section ".tdata","awT",@progbits
3205 addl r16 = @ltoff(@dtpmod(foo#)), gp
3206 addl r17 = @ltoff(@dtprel(foo#)), gp
3207 addl r18 = @ltoff(@tprel(foo#)), gp
3208 addl r19 = @dtprel(foo#), gp
3209 adds r21 = @dtprel(foo#), r13
3210 movl r23 = @dtprel(foo#)
3211 addl r20 = @tprel(foo#), gp
3212 adds r22 = @tprel(foo#), r13
3213 movl r24 = @tprel(foo#)'
3216 tls_as_opt=--fatal-warnings
3220 .section .tdata,"awT",@progbits
3224 addik r5,r20,x@TLSGD
3225 addik r5,r20,x@TLSLDM'
3228 tls_as_opt='--fatal-warnings'
3232 .section .tdata,"awT",@progbits
3236 addiu $4, $28, %tlsgd(x)
3237 addiu $4, $28, %tlsldm(x)
3238 lui $4, %dtprel_hi(x)
3239 addiu $4, $4, %dtprel_lo(x)
3240 lw $4, %gottprel(x)($28)
3241 lui $4, %tprel_hi(x)
3242 addiu $4, $4, %tprel_lo(x)'
3245 tls_as_opt='-32 --fatal-warnings'
3249 .section .tdata,"awT",@progbits
3254 move.l x@TLSGD(%a5),%a0
3255 move.l x@TLSLDM(%a5),%a0
3256 move.l x@TLSLDO(%a5),%a0
3257 move.l x@TLSIE(%a5),%a0
3258 move.l x@TLSLE(%a5),%a0'
3261 tls_as_opt='--fatal-warnings'
3265 .section ".tdata","awT",@progbits'
3268 tls_as_opt="--fatal-warnings"
3272 .section ".tdata","awT",%progbits
3276 add x0, x0, #:tlsgd_lo12:x
3281 tls_as_opt='--fatal-warnings'
3285 .extern __get_tpointer
3303 .section ".tdata","awT",@progbits
3311 addi 3,2,ld0@got@tlsgd
3317 addi 3,2,x1@got@tlsld
3323 addis 9,3,x2@dtprel@ha
3324 addi 9,9,x2@dtprel@l
3327 ld 9,x3@got@dtprel(2)
3333 tls_as_opt="-a64 --fatal-warnings"
3337 .section ".tdata","awT",@progbits
3345 addi 3,31,ld0@got@tlsgd
3347 addi 3,31,x1@got@tlsld
3350 addis 9,3,x2@dtprel@ha
3351 addi 9,9,x2@dtprel@l
3352 lwz 9,x3@got@tprel(31)
3355 addis 9,2,x2@tprel@ha
3356 addi 9,9,x2@tprel@l'
3359 tls_as_opt="-a32 --fatal-warnings"
3363 .section ".tdata","awT",@progbits
3372 l %r1,foo@GOTNTPOFF(%r12)
3373 l %r1,0(%r1):tls_load:foo
3374 bas %r14,0(%r1,%r13):tls_gdcall:foo
3375 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3378 tls_as_opt="-m31 --fatal-warnings"
3382 .section ".tdata","awT",@progbits
3390 lg %r1,foo@GOTNTPOFF(%r12)
3391 larl %r1,foo@INDNTPOFF
3392 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3393 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3396 tls_as_opt="-m64 -Aesame --fatal-warnings"
3398 sh-*-* | sh[123456789lbe]*-*-*)
3400 .section ".tdata","awT",@progbits
3410 tls_as_opt=--fatal-warnings
3414 sparc*-sun-solaris2.*)
3421 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3423 .section ".tdata",#alloc,#write,#tls'
3428 .section ".tdata","awT",@progbits'
3431 tls_as_opt="-32 --fatal-warnings"
3433 conftest_s="$conftest_s
3436 sethi %tgd_hi22(foo), %o0
3437 add %o0, %tgd_lo10(foo), %o1
3438 add %l7, %o1, %o0, %tgd_add(foo)
3439 call __tls_get_addr, %tgd_call(foo)
3440 sethi %tldm_hi22(foo), %l1
3441 add %l1, %tldm_lo10(foo), %l2
3442 add %l7, %l2, %o0, %tldm_add(foo)
3443 call __tls_get_addr, %tldm_call(foo)
3444 sethi %tldo_hix22(foo), %l3
3445 xor %l3, %tldo_lox10(foo), %l4
3446 add %o0, %l4, %l5, %tldo_add(foo)
3447 sethi %tie_hi22(foo), %o3
3448 add %o3, %tie_lo10(foo), %o3
3449 ld [%l7 + %o3], %o2, %tie_ld(foo)
3450 add %g7, %o2, %o4, %tie_add(foo)
3451 sethi %tle_hix22(foo), %l1
3452 xor %l1, %tle_lox10(foo), %o5
3453 ld [%g7 + %o5], %o1"
3457 .section ".tdata","awT",@progbits
3460 addli r0, zero, tls_gd(foo)
3461 auli r0, zero, tls_gd_ha16(foo)
3462 addli r0, r0, tls_gd_lo16(foo)
3464 addli r0, zero, tls_ie(foo)
3465 auli r0, r0, tls_ie_ha16(foo)
3466 addli r0, r0, tls_ie_lo16(foo)'
3469 tls_as_opt="--fatal-warnings"
3473 .section ".tdata","awT",@progbits
3476 shl16insli r0, zero, hw0_last_tls_gd(foo)
3477 shl16insli r0, zero, hw1_last_tls_gd(foo)
3478 shl16insli r0, r0, hw0_tls_gd(foo)
3480 shl16insli r0, zero, hw1_last_tls_ie(foo)
3481 shl16insli r0, r0, hw0_tls_ie(foo)'
3484 tls_as_opt="--fatal-warnings"
3488 .section ".tdata","awT",@progbits
3491 movi a8, foo@TLSFUNC
3492 movi a10, foo@TLSARG
3493 callx8.tls a8, foo@TLSCALL'
3500 if test "x$enable_tls" = xno ; then
3501 : # TLS explicitly disabled.
3502 elif test "x$enable_tls" = xyes ; then
3503 set_have_as_tls=yes # TLS explicitly enabled.
3504 elif test -z "$tls_first_major"; then
3505 : # If we don't have a check, assume no support.
3507 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3508 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3509 [set_have_as_tls=yes])
3511 if test $set_have_as_tls = yes ; then
3512 AC_DEFINE(HAVE_AS_TLS, 1,
3513 [Define if your assembler and linker support thread-local storage.])
3516 # Target-specific assembler checks.
3518 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3519 gcc_cv_ld_static_dynamic=no
3520 gcc_cv_ld_static_option='-Bstatic'
3521 gcc_cv_ld_dynamic_option='-Bdynamic'
3522 if test $in_tree_ld = yes ; then
3523 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3524 gcc_cv_ld_static_dynamic=yes
3526 elif test x$gcc_cv_ld != x; then
3527 # Check if linker supports -Bstatic/-Bdynamic option
3528 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3529 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3530 gcc_cv_ld_static_dynamic=yes
3533 # AIX ld uses -b flags
3534 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3535 gcc_cv_ld_static_dynamic=yes
3536 gcc_cv_ld_static_option="-bstatic"
3537 gcc_cv_ld_dynamic_option="-bdynamic"
3539 # HP-UX ld uses -a flags to select between shared and archive.
3541 if test x"$gnu_ld" = xno; then
3542 gcc_cv_ld_static_dynamic=yes
3543 gcc_cv_ld_static_option="-aarchive_shared"
3544 gcc_cv_ld_dynamic_option="-adefault"
3547 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3549 gcc_cv_ld_static_dynamic=yes
3554 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3555 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3556 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3557 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3558 [Define to the linker option to disable use of shared objects.])
3559 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3560 [Define to the linker option to enable use of shared objects.])
3562 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3564 if test x"$demangler_in_ld" = xyes; then
3565 AC_MSG_CHECKING(linker --demangle support)
3566 gcc_cv_ld_demangle=no
3567 if test $in_tree_ld = yes; then
3568 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3569 gcc_cv_ld_demangle=yes
3571 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3572 # Check if the GNU linker supports --demangle option
3573 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3574 gcc_cv_ld_demangle=yes
3577 if test x"$gcc_cv_ld_demangle" = xyes; then
3578 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3579 [Define if your linker supports --demangle option.])
3581 AC_MSG_RESULT($gcc_cv_ld_demangle)
3584 AC_MSG_CHECKING(linker plugin support)
3586 if test -f liblto_plugin.la; then
3587 save_ld_ver="$ld_ver"
3588 save_ld_vers_major="$ld_vers_major"
3589 save_ld_vers_minor="$ld_vers_minor"
3590 save_ld_is_gold="$ld_is_gold"
3594 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3596 # FIXME: ld_is_gold?
3597 ld_vers_major="$gcc_cv_gld_major_version"
3598 ld_vers_minor="$gcc_cv_gld_minor_version"
3600 # Determine plugin linker version.
3601 # FIXME: Partial duplicate from above, generalize.
3603 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3604 if echo "$ld_ver" | grep GNU > /dev/null; then
3605 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3607 ld_vers=`echo $ld_ver | sed -n \
3608 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3610 ld_vers=`echo $ld_ver | sed -n \
3611 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3613 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3614 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3619 # Determine plugin support.
3620 if echo "$ld_ver" | grep GNU > /dev/null; then
3621 # Require GNU ld or gold 2.21+ for plugin support by default.
3622 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3624 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3625 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3630 ld_ver="$save_ld_ver"
3631 ld_vers_major="$save_ld_vers_major"
3632 ld_vers_minor="$save_ld_vers_minor"
3633 ld_is_gold="$save_ld_is_gold"
3635 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3636 [Define to the level of your linker's plugin support.])
3637 AC_MSG_RESULT($gcc_cv_lto_plugin)
3641 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3642 [-mabi=lp64], [.text],,,)
3643 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3644 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3645 [Define if your assembler supports the -mabi option.])
3647 if test x$with_abi = xilp32; then
3648 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3649 Upgrade the Assembler.])
3651 if test x"$with_multilib_list" = xdefault; then
3652 TM_MULTILIB_CONFIG=lp64
3654 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3655 for aarch64_multilib in ${aarch64_multilibs}; do
3656 case ${aarch64_multilib} in
3658 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3659 Upgrade the Assembler.])
3667 # Check if we have binutils support for relocations types needed by -fpic
3668 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3671 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3672 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3673 [Define if your assembler supports relocs needed by -fpic.])])
3674 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3675 AC_ARG_ENABLE(fix-cortex-a53-835769,
3677 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3678 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3679 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3680 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3685 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3690 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3691 Valid choices are 'yes' and 'no'.])
3697 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3698 AC_ARG_ENABLE(fix-cortex-a53-843419,
3700 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3701 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3702 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3703 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3708 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3713 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3714 Valid choices are 'yes' and 'no'.])
3722 # All TARGET_ABI_OSF targets.
3723 alpha*-*-linux* | alpha*-*-*bsd*)
3724 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3725 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3728 extbl $3, $2, $3 !lituse_bytoff!1
3729 ldq $2, a($29) !literal!1
3730 ldq $4, b($29) !literal!2
3731 ldq_u $3, 0($2) !lituse_base!1
3732 ldq $27, f($29) !literal!5
3733 jsr $26, ($27), f !lituse_jsr!5
3734 ldah $29, 0($26) !gpdisp!3
3735 lda $0, c($29) !gprel
3736 ldah $1, d($29) !gprelhigh
3737 lda $1, d($1) !gprellow
3738 lda $29, 0($29) !gpdisp!3],,
3739 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3740 [Define if your assembler supports explicit relocations.])])
3741 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3742 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3745 ldq $27, a($29) !literal!1
3746 jsr $26, ($27), a !lituse_jsrdirect!1],,
3747 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3748 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3752 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3753 [--mlink-relax], [.text],,
3754 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3755 [Define if your avr assembler supports --mlink-relax option.])])
3757 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3759 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3760 [Define if your avr assembler supports -mrmw option.])])
3764 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3765 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3766 [-no-mul-bug-abort], [.text],,
3767 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3768 [Define if your assembler supports the -no-mul-bug-abort option.])])
3772 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3773 [.register %g2, #scratch],,
3774 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3775 [Define if your assembler supports .register.])])
3777 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3779 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3780 [Define if your assembler supports -relax option.])])
3782 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3783 gcc_cv_as_sparc_gotdata_op,,
3790 sethi %gdop_hix22(foo), %g1
3791 xor %g1, %gdop_lox10(foo), %g1
3792 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3793 [if test x$gcc_cv_ld != x \
3794 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3795 if test x$gcc_cv_objdump != x; then
3796 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3797 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3798 gcc_cv_as_sparc_gotdata_op=no
3800 gcc_cv_as_sparc_gotdata_op=yes
3805 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3806 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3808 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3809 gcc_cv_as_sparc_ua_pcrel,,
3817 .uaword %r_disp32(foo)],
3818 [if test x$gcc_cv_ld != x \
3819 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3820 gcc_cv_as_sparc_ua_pcrel=yes
3823 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3824 [Define if your assembler and linker support unaligned PC relative relocs.])
3826 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3827 gcc_cv_as_sparc_ua_pcrel_hidden,,
3832 .uaword %r_disp32(foo)
3833 .byte 0x32, 0x33, 0x34
3838 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3839 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3840 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3841 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3842 if $gcc_cv_objdump -R conftest 2> /dev/null \
3843 | grep 'DISP32' > /dev/null 2>&1; then
3846 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3850 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3851 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3852 ]) # unaligned pcrel relocs
3854 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3855 gcc_cv_as_sparc_offsetable_lo10,,
3858 or %g1, %lo(ab) + 12, %g1
3859 or %g1, %lo(ab + 12), %g1],
3860 [if test x$gcc_cv_objdump != x \
3861 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3862 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3863 gcc_cv_as_sparc_offsetable_lo10=yes
3865 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3866 [Define if your assembler supports offsetable %lo().])])
3868 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3869 gcc_cv_as_sparc_fmaf,,
3872 .register %g2, #scratch
3873 .register %g3, #scratch
3875 fmaddd %f0, %f2, %f4, %f6
3876 addxccc %g1, %g2, %g3
3877 fsrl32 %f2, %f4, %f8
3878 fnaddd %f10, %f12, %f14],,
3879 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3880 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3882 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3883 gcc_cv_as_sparc_sparc4,,
3886 .register %g2, #scratch
3887 .register %g3, #scratch
3890 1: cwbneg %g2, %g3, 1f
3893 aes_kexpand0 %f4, %f6, %f8
3894 des_round %f38, %f40, %f42, %f44
3895 camellia_f %f54, %f56, %f58, %f60
3896 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3897 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3898 [Define if your assembler supports SPARC4 instructions.])])
3900 gcc_GAS_CHECK_FEATURE([LEON instructions],
3901 gcc_cv_as_sparc_leon,,
3904 .register %g2, #scratch
3905 .register %g3, #scratch
3909 casa [[%g2]] 0xb, %g3, %g1],,
3910 [AC_DEFINE(HAVE_AS_LEON, 1,
3911 [Define if your assembler supports LEON instructions.])])
3915 i[34567]86-*-* | x86_64-*-*)
3919 # Full C++ conformance when using a shared libstdc++-v3 requires some
3920 # support from the Cygwin DLL, which in more recent versions exports
3921 # wrappers to aid in interposing and redirecting operators new, delete,
3922 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3923 # are configuring for a version of Cygwin that exports the wrappers.
3924 if test x$host = x$target && test x$host_cpu = xi686; then
3925 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3927 # Can't check presence of libc functions during cross-compile, so
3928 # we just have to assume we're building for an up-to-date target.
3929 gcc_ac_cygwin_dll_wrappers=yes
3931 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3932 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3933 [Define if you want to generate code by default that assumes that the
3934 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3937 cygwin* | pe | mingw32* | interix*)
3938 # Recent binutils allows the three-operand form of ".comm" on PE. This
3939 # definition is used unconditionally to initialise the default state of
3940 # the target option variable that governs usage of the feature.
3941 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3942 [2,19,52],,[.comm foo,1,32])
3943 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3944 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3945 [Define if your assembler supports specifying the alignment
3946 of objects allocated using the GAS .comm command.])
3947 # Used for DWARF 2 in PE
3948 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3949 gcc_cv_as_ix86_pe_secrel32,
3955 [if test x$gcc_cv_ld != x \
3956 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3957 gcc_cv_as_ix86_pe_secrel32=yes
3960 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3961 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3962 # Test if the assembler supports the extended form of the .section
3963 # directive that specifies section alignment. LTO support uses this,
3964 # but normally only after installation, so we warn but don't fail the
3965 # configure if LTO is enabled but the assembler does not support it.
3966 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3967 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3968 if test x$gcc_cv_as_section_has_align != xyes; then
3969 case ",$enable_languages," in
3971 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3978 # Test if the assembler supports the section flag 'e' for specifying
3979 # an excluded section.
3980 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3981 [2,22,51], [--fatal-warnings],
3984 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3985 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3986 [Define if your assembler supports specifying the section flag e.])
3988 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3989 gcc_cv_as_ix86_filds,,,
3990 [filds (%ebp); fists (%ebp)],,
3991 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3992 [Define if your assembler uses filds and fists mnemonics.])])
3994 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3995 gcc_cv_as_ix86_fildq,,,
3996 [fildq (%ebp); fistpq (%ebp)],,
3997 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3998 [Define if your assembler uses fildq and fistq mnemonics.])])
4000 gcc_GAS_CHECK_FEATURE([cmov syntax],
4001 gcc_cv_as_ix86_cmov_sun_syntax,,,
4002 [cmovl.l %edx, %eax],,
4003 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4004 [Define if your assembler supports the Sun syntax for cmov.])])
4006 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4007 gcc_cv_as_ix86_ffreep,,,
4009 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4010 [Define if your assembler supports the ffreep mnemonic.])])
4012 gcc_GAS_CHECK_FEATURE([.quad directive],
4013 gcc_cv_as_ix86_quad,,,
4015 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4016 [Define if your assembler supports the .quad directive.])])
4018 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4019 gcc_cv_as_ix86_sahf,,,
4022 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4023 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4025 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4026 gcc_cv_as_ix86_interunit_movq,,,
4030 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4031 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4032 [Define if your assembler supports interunit movq mnemonic.])
4034 gcc_GAS_CHECK_FEATURE([hle prefixes],
4035 gcc_cv_as_ix86_hle,,,
4036 [lock xacquire cmpxchg %esi, (%ecx)],,
4037 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4038 [Define if your assembler supports HLE prefixes.])])
4040 gcc_GAS_CHECK_FEATURE([swap suffix],
4041 gcc_cv_as_ix86_swap,,,
4042 [movl.s %esp, %ebp],,
4043 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4044 [Define if your assembler supports the swap suffix.])])
4046 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4047 gcc_cv_as_ix86_diff_sect_delta,,,
4055 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4056 [Define if your assembler supports the subtraction of symbols in different sections.])])
4058 # These two are used unconditionally by i386.[ch]; it is to be defined
4059 # to 1 if the feature is present, 0 otherwise.
4060 as_ix86_gotoff_in_data_opt=
4061 if test x$gas = xyes; then
4062 as_ix86_gotoff_in_data_opt="--32"
4064 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4065 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4066 [$as_ix86_gotoff_in_data_opt],
4072 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4073 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4074 [Define true if the assembler supports '.long foo@GOTOFF'.])
4076 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4077 gcc_cv_as_ix86_rep_lock_prefix,,,
4083 lock addl %edi, (%eax,%esi)
4084 lock orl $0, (%esp)],,
4085 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4086 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4088 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4089 gcc_cv_as_ix86_ud2,,,
4091 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4092 [Define if your assembler supports the 'ud2' mnemonic.])])
4094 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4095 gcc_cv_as_ix86_tlsgdplt,,,
4096 [call tls_gd@tlsgdplt],
4097 [if test x$gcc_cv_ld != x \
4098 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4099 gcc_cv_as_ix86_tlsgdplt=yes
4102 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4103 [Define if your assembler and linker support @tlsgdplt.])])
4106 .section .tdata,"aw'$tls_section_flag'",@progbits
4108 .section .text,"ax",@progbits
4109 call tls_ld@tlsldmplt'
4110 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4111 gcc_cv_as_ix86_tlsldmplt,,,
4113 [if test x$gcc_cv_ld != x \
4114 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4115 gcc_cv_as_ix86_tlsldmplt=yes
4118 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4119 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4120 [Define to 1 if your assembler and linker support @tlsldmplt.])
4122 # Enforce 32-bit output with gas and gld.
4123 if test x$gas = xyes; then
4124 as_ix86_tls_ldm_opt="--32"
4126 if echo "$ld_ver" | grep GNU > /dev/null; then
4127 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4128 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4130 ld_ix86_tls_ldm_opt="-melf_i386"
4134 .section .text,"ax",@progbits
4136 .type _start, @function
4138 leal value@tlsldm(%ebx), %eax
4139 call ___tls_get_addr@plt
4141 .section .tdata,"aw'$tls_section_flag'",@progbits
4142 .type value, @object
4144 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4145 gcc_cv_as_ix86_tlsldm,,
4146 [$as_ix86_tls_ldm_opt],
4148 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4149 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4150 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4151 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4152 gcc_cv_as_ix86_tlsldm=yes
4156 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4157 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4158 [Define to 1 if your assembler and linker support @tlsldm.])
4163 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4164 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4166 addl r15 = @ltoffx(x#), gp
4168 ld8.mov r16 = [[r15]], x#],,
4169 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4170 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4176 *-*-aix*) conftest_s=' .machine "pwr5"
4180 gcc_GAS_CHECK_FEATURE([.machine directive support],
4181 gcc_cv_as_machine_directive,,,
4182 [ .machine ppc7400])
4183 if test x$gcc_cv_as_machine_directive != xyes; then
4184 echo "*** This target requires an assembler supporting \".machine\"" >&2
4185 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4186 test x$build = x$target && exit 1
4190 *) conftest_s=' .machine power4
4195 gcc_GAS_CHECK_FEATURE([mfcr field support],
4196 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4198 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4199 [Define if your assembler supports mfcr field.])])
4202 *-*-aix*) conftest_s=' .machine "pwr5"
4205 *) conftest_s=' .machine power5
4210 gcc_GAS_CHECK_FEATURE([popcntb support],
4211 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4213 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4214 [Define if your assembler supports popcntb field.])])
4217 *-*-aix*) conftest_s=' .machine "pwr5x"
4220 *) conftest_s=' .machine power5
4225 gcc_GAS_CHECK_FEATURE([fp round support],
4226 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4228 [AC_DEFINE(HAVE_AS_FPRND, 1,
4229 [Define if your assembler supports fprnd.])])
4232 *-*-aix*) conftest_s=' .machine "pwr6"
4235 *) conftest_s=' .machine power6
4240 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4241 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4243 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4244 [Define if your assembler supports mffgpr and mftgpr.])])
4247 *-*-aix*) conftest_s=' .csect .text[[PR]]
4249 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4253 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4254 *) conftest_s=' .text
4256 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4259 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4260 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4262 [AC_DEFINE(HAVE_AS_REL16, 1,
4263 [Define if your assembler supports R_PPC_REL16 relocs.])])
4266 *-*-aix*) conftest_s=' .machine "pwr6"
4269 *) conftest_s=' .machine power6
4274 gcc_GAS_CHECK_FEATURE([compare bytes support],
4275 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4277 [AC_DEFINE(HAVE_AS_CMPB, 1,
4278 [Define if your assembler supports cmpb.])])
4281 *-*-aix*) conftest_s=' .machine "pwr6"
4284 *) conftest_s=' .machine power6
4289 gcc_GAS_CHECK_FEATURE([decimal float support],
4290 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4292 [AC_DEFINE(HAVE_AS_DFP, 1,
4293 [Define if your assembler supports DFP instructions.])])
4296 *-*-aix*) conftest_s=' .machine "pwr7"
4299 *) conftest_s=' .machine power7
4304 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4305 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4307 [AC_DEFINE(HAVE_AS_VSX, 1,
4308 [Define if your assembler supports VSX instructions.])])
4311 *-*-aix*) conftest_s=' .machine "pwr7"
4314 *) conftest_s=' .machine power7
4319 gcc_GAS_CHECK_FEATURE([popcntd support],
4320 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4322 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4323 [Define if your assembler supports POPCNTD instructions.])])
4326 *-*-aix*) conftest_s=' .machine "pwr8"
4327 .csect .text[[PR]]';;
4328 *) conftest_s=' .machine power8
4332 gcc_GAS_CHECK_FEATURE([power8 support],
4333 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4335 [AC_DEFINE(HAVE_AS_POWER8, 1,
4336 [Define if your assembler supports POWER8 instructions.])])
4339 *-*-aix*) conftest_s=' .machine "pwr9"
4340 .csect .text[[PR]]';;
4341 *) conftest_s=' .machine power9
4345 gcc_GAS_CHECK_FEATURE([power9 support],
4346 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4348 [AC_DEFINE(HAVE_AS_POWER9, 1,
4349 [Define if your assembler supports POWER9 instructions.])])
4352 *-*-aix*) conftest_s=' .csect .text[[PR]]
4354 *) conftest_s=' .text
4358 gcc_GAS_CHECK_FEATURE([lwsync support],
4359 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4361 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4362 [Define if your assembler supports LWSYNC instructions.])])
4365 *-*-aix*) conftest_s=' .machine "476"
4368 *) conftest_s=' .machine "476"
4373 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4374 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4376 [AC_DEFINE(HAVE_AS_DCI, 1,
4377 [Define if your assembler supports the DCI/ICI instructions.])])
4379 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4380 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4381 [.gnu_attribute 4,1],,
4382 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4383 [Define if your assembler supports .gnu_attribute.])])
4385 gcc_GAS_CHECK_FEATURE([tls marker support],
4386 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4387 [ bl __tls_get_addr(x@tlsgd)],,
4388 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4389 [Define if your assembler supports arg info for __tls_get_addr.])])
4391 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4392 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4393 [ .reloc .,R_PPC64_ENTRY; nop],,
4394 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4395 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4399 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4400 gcc_cv_as_aix_ref, [2,21,0],,
4401 [ .csect stuff[[rw]]
4407 [AC_DEFINE(HAVE_AS_REF, 1,
4408 [Define if your assembler supports .ref])])
4410 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4411 gcc_cv_as_aix_dwloc, [2,21,0],,
4416 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4417 [Define if your assembler supports AIX debug frame section label reference.])])
4423 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4424 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4425 [ lw $4,%gp_rel(foo)($4)],,
4426 [if test x$target_cpu_default = x
4427 then target_cpu_default=MASK_EXPLICIT_RELOCS
4428 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4431 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4432 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4433 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4434 [Define if the assembler understands -mno-shared.])])
4436 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4437 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4438 [.gnu_attribute 4,1],,
4439 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4440 [Define if your assembler supports .gnu_attribute.])])
4442 gcc_GAS_CHECK_FEATURE([.module support],
4443 gcc_cv_as_mips_dot_module,,[-32],
4446 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4447 [Define if your assembler supports .module.])])
4448 if test x$gcc_cv_as_mips_dot_module = xno \
4449 && test x$with_fp_32 != x; then
4451 [Requesting --with-fp-32= requires assembler support for .module.])
4454 gcc_GAS_CHECK_FEATURE([.micromips support],
4455 gcc_cv_as_micromips_support,,[--fatal-warnings],
4457 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4458 [Define if your assembler supports the .set micromips directive])])
4460 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4461 gcc_cv_as_mips_dtprelword, [2,18,0],,
4462 [.section .tdata,"awT",@progbits
4466 .dtprelword x+0x8000],,
4467 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4468 [Define if your assembler supports .dtprelword.])])
4470 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4471 gcc_cv_as_mips_dspr1_mult,,,
4481 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4482 [Define if your assembler supports DSPR1 mult.])])
4484 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4485 gcc_cv_as_ld_jalr_reloc=no
4486 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4487 if test $in_tree_ld = yes ; then
4488 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4489 && test $in_tree_ld_is_elf = yes; then
4490 gcc_cv_as_ld_jalr_reloc=yes
4492 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4493 echo ' .ent x' > conftest.s
4494 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4495 echo ' lw $25,%call16(y)($28)' >> conftest.s
4496 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4497 echo '1: jalr $25' >> conftest.s
4498 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4499 echo '1: jalr $25' >> conftest.s
4500 echo ' .end x' >> conftest.s
4501 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4502 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4503 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4504 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4505 gcc_cv_as_ld_jalr_reloc=yes
4511 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4512 if test x$target_cpu_default = x; then
4513 target_cpu_default=MASK_RELAX_PIC_CALLS
4515 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4518 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4520 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4521 [gcc_cv_ld_mips_personality_relaxation],
4522 [gcc_cv_ld_mips_personality_relaxation=no
4523 if test $in_tree_ld = yes ; then
4524 if test "$gcc_cv_gld_major_version" -eq 2 \
4525 -a "$gcc_cv_gld_minor_version" -ge 21 \
4526 -o "$gcc_cv_gld_major_version" -gt 2; then
4527 gcc_cv_ld_mips_personality_relaxation=yes
4529 elif test x$gcc_cv_as != x \
4530 -a x$gcc_cv_ld != x \
4531 -a x$gcc_cv_readelf != x ; then
4532 cat > conftest.s <<EOF
4534 .cfi_personality 0x80,indirect_ptr
4541 .section .data,"aw",@progbits
4545 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4546 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4547 if $gcc_cv_readelf -d conftest 2>&1 \
4548 | grep TEXTREL > /dev/null 2>&1; then
4550 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4551 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4554 gcc_cv_ld_mips_personality_relaxation=yes
4558 rm -f conftest.s conftest.o conftest])
4559 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4560 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4561 [Define if your linker can relax absolute .eh_frame personality
4562 pointers into PC-relative form.])
4565 gcc_GAS_CHECK_FEATURE([-mnan= support],
4566 gcc_cv_as_mips_nan,,
4568 [AC_DEFINE(HAVE_AS_NAN, 1,
4569 [Define if the assembler understands -mnan=.])])
4570 if test x$gcc_cv_as_mips_nan = xno \
4571 && test x$with_nan != x; then
4573 [Requesting --with-nan= requires assembler support for -mnan=])
4577 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4578 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4579 [.gnu_attribute 8,1],,
4580 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4581 [Define if your assembler supports .gnu_attribute.])])
4582 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4583 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4588 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4589 [Define if your assembler supports .machine and .machinemode.])])
4590 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4591 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4592 [ .machine z13+vx ],,
4593 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4594 [Define if your assembler supports architecture modifiers.])])
4598 # Mips and HP-UX need the GNU assembler.
4599 # Linux on IA64 might be able to use the Intel assembler.
4602 mips*-*-* | *-*-hpux* )
4603 if test x$gas_flag = xyes \
4604 || test x"$host" != x"$build" \
4605 || test ! -x "$gcc_cv_as" \
4606 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4609 echo "*** This configuration requires the GNU assembler" >&2
4615 # ??? Not all targets support dwarf2 debug_line, even within a version
4616 # of gas. Moreover, we need to emit a valid instruction to trigger any
4617 # info to the output file. So, as supported targets are added to gas 2.11,
4618 # add some instruction here to (also) show we expect this might work.
4619 # ??? Once 2.11 is released, probably need to add first known working
4620 # version to the per-target configury.
4622 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4623 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4624 | visium | xstormy16 | xtensa)
4634 if test x"$insn" != x; then
4636 .file 1 \"conftest.s\"
4639 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4640 gcc_cv_as_dwarf2_debug_line,
4641 [elf,2,11,0],, [$conftest_s],
4642 [if test x$gcc_cv_objdump != x \
4643 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4644 | grep debug_line > /dev/null 2>&1; then
4645 gcc_cv_as_dwarf2_debug_line=yes
4648 # The .debug_line file table must be in the exact order that
4649 # we specified the files, since these indices are also used
4650 # by DW_AT_decl_file. Approximate this test by testing if
4651 # the assembler bitches if the same index is assigned twice.
4652 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4653 gcc_cv_as_dwarf2_file_buggy,,,
4657 if test $gcc_cv_as_dwarf2_debug_line = yes \
4658 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4659 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4660 [Define if your assembler supports dwarf2 .file/.loc directives,
4661 and preserves file table indices exactly as given.])
4664 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4665 gcc_cv_as_gdwarf2_flag,
4666 [elf,2,11,0], [--gdwarf2], [$insn],,
4667 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4668 [Define if your assembler supports the --gdwarf2 option.])])
4670 gcc_GAS_CHECK_FEATURE([--gstabs option],
4671 gcc_cv_as_gstabs_flag,
4672 [elf,2,11,0], [--gstabs], [$insn],,
4673 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4674 [Define if your assembler supports the --gstabs option.])])
4676 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4677 gcc_cv_as_debug_prefix_map_flag,
4678 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4679 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4680 [Define if your assembler supports the --debug-prefix-map option.])])
4683 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4684 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4685 [# gas compiled without zlib cannot compress debug sections and warns
4686 # about it, but still exits successfully. So check for this, too.
4687 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4689 gcc_cv_as_compress_debug=0
4690 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4692 gcc_cv_as_compress_debug=1
4693 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4694 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4696 gcc_cv_as_compress_debug=0
4697 # FIXME: Future gas versions will support ELF gABI style via
4698 # --compress-debug-sections[=type].
4700 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4701 [Define to the level of your assembler's compressed debug section support.])
4702 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4703 [Define to the assembler option to enable compressed debug sections.])
4704 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4705 [Define to the assembler option to disable compressed debug sections.])
4707 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4710 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4711 [Define if your assembler supports .lcomm with an alignment field.])])
4713 if test x$with_sysroot = x && test x$host = x$target \
4714 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4715 && test "$prefix" != "NONE"; then
4716 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4717 [Define to PREFIX/include if cpp should also search that directory.])
4720 # Determine the version of glibc, if any, used on the target.
4721 AC_MSG_CHECKING([for target glibc version])
4722 AC_ARG_WITH([glibc-version],
4723 [AS_HELP_STRING([--with-glibc-version=M.N],
4724 [assume GCC used with glibc version M.N or later])], [
4725 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4726 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4727 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4729 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4731 glibc_version_major=0
4732 glibc_version_minor=0
4733 [if test -f $target_header_dir/features.h \
4734 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4735 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4736 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4737 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4739 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4740 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4741 [GNU C Library major version number used on the target, or 0.])
4742 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4743 [GNU C Library minor version number used on the target, or 0.])
4745 AC_ARG_ENABLE(gnu-unique-object,
4746 [AS_HELP_STRING([--enable-gnu-unique-object],
4747 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4748 [case $enable_gnu_unique_object in
4750 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4751 Valid choices are 'yes' and 'no'.]) ;;
4753 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4755 [.type foo, '$target_type_format_char'gnu_unique_object],,
4756 # We need to unquote above to to use the definition from config.gcc.
4757 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4758 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4760 if test x$enable_gnu_unique_object = xyes; then
4761 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4762 [Define if your assembler supports @gnu_unique_object.])
4765 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4766 [gcc_cv_as_line_zero],
4767 [gcc_cv_as_line_zero=no
4768 if test $in_tree_gas = yes; then
4769 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4770 elif test "x$gcc_cv_as" != x; then
4771 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4772 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4773 test "x`cat conftest.out`" = x
4775 gcc_cv_as_line_zero=yes
4777 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4778 cat conftest.s >&AS_MESSAGE_LOG_FD
4779 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4780 cat conftest.out >&AS_MESSAGE_LOG_FD
4782 rm -f conftest.o conftest.s conftest.out
4784 if test "x$gcc_cv_as_line_zero" = xyes; then
4785 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4786 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4789 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4790 gcc_cv_ld_eh_frame_hdr=no
4791 if test $in_tree_ld = yes ; then
4792 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4793 && test $in_tree_ld_is_elf = yes; then
4794 gcc_cv_ld_eh_frame_hdr=yes
4796 elif test x$gcc_cv_ld != x; then
4797 if echo "$ld_ver" | grep GNU > /dev/null; then
4798 # Check if linker supports --eh-frame-hdr option
4799 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4800 gcc_cv_ld_eh_frame_hdr=yes
4805 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4806 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4807 gcc_cv_ld_eh_frame_hdr=yes
4813 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4814 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4815 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4816 [Define if your linker supports .eh_frame_hdr.])
4818 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4820 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4821 gcc_cv_ld_eh_frame_ciev3=no
4822 if test $in_tree_ld = yes ; then
4823 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4824 && test $in_tree_ld_is_elf = yes; then
4825 gcc_cv_ld_eh_frame_ciev3=yes
4827 elif test x$gcc_cv_ld != x; then
4828 if echo "$ld_ver" | grep GNU > /dev/null; then
4829 gcc_cv_ld_eh_frame_ciev3=yes
4830 if test 0"$ld_date" -lt 20040513; then
4831 if test -n "$ld_date"; then
4832 # If there was date string, but was earlier than 2004-05-13, fail
4833 gcc_cv_ld_eh_frame_ciev3=no
4834 elif test "$ld_vers_major" -lt 2; then
4835 gcc_cv_ld_eh_frame_ciev3=no
4836 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4837 gcc_cv_ld_eh_frame_ciev3=no
4843 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4844 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4845 gcc_cv_ld_eh_frame_ciev3=yes
4851 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4852 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4853 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4854 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4856 AC_MSG_CHECKING(linker position independent executable support)
4858 if test $in_tree_ld = yes ; then
4860 # Full PIE support on Solaris was only introduced in gld 2.26.
4861 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4862 *) gcc_gld_pie_min_version=15 ;;
4864 if test "$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 \
4865 && test $in_tree_ld_is_elf = yes; then
4868 elif test x$gcc_cv_ld != x; then
4869 # Check if linker supports -pie option
4870 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4874 if echo "$ld_ver" | grep GNU > /dev/null \
4875 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4882 *-*-solaris2.1[[1-9]]*)
4883 # Solaris 11.x and Solaris 12 added PIE support.
4884 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4891 if test x"$gcc_cv_ld_pie" = xyes; then
4892 AC_DEFINE(HAVE_LD_PIE, 1,
4893 [Define if your linker supports PIE option.])
4895 AC_MSG_RESULT($gcc_cv_ld_pie)
4897 AC_MSG_CHECKING(linker PIE support with copy reloc)
4898 gcc_cv_ld_pie_copyreloc=no
4899 if test $gcc_cv_ld_pie = yes ; then
4900 if test $in_tree_ld = yes ; then
4901 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4902 gcc_cv_ld_pie_copyreloc=yes
4904 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4905 # Check if linker supports -pie option with copy reloc
4907 i?86-*-linux* | x86_64-*-linux*)
4908 cat > conftest1.s <<EOF
4911 .type a_glob, @object
4916 cat > conftest2.s <<EOF
4919 .type main, @function
4921 movl %eax, a_glob(%rip)
4924 .section .data.rel,"aw",@progbits
4929 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4930 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4931 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4932 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4933 gcc_cv_ld_pie_copyreloc=yes
4935 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4940 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4941 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4942 [Define 0/1 if your linker supports -pie option with copy reloc.])
4943 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4945 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4946 gcc_cv_ld_eh_gc_sections=no
4947 if test $in_tree_ld = yes ; then
4948 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4949 && test $in_tree_ld_is_elf = yes; then
4950 gcc_cv_ld_eh_gc_sections=yes
4952 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4953 cat > conftest.s <<EOF
4956 .type _start, @function
4959 .size _start, .-_start
4960 .section .text.foo,"ax",@progbits
4961 .type foo, @function
4965 .section .gcc_except_table.foo,"a",@progbits
4968 .section .eh_frame,"a",@progbits
4971 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4972 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4973 | grep "gc-sections option ignored" > /dev/null; then
4974 gcc_cv_ld_eh_gc_sections=no
4975 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4976 | grep gcc_except_table > /dev/null; then
4977 gcc_cv_ld_eh_gc_sections=yes
4978 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4979 if test x$gcc_cv_as_comdat_group != xyes; then
4980 gcc_cv_ld_eh_gc_sections=no
4981 cat > conftest.s <<EOF
4984 .type _start, @function
4987 .size _start, .-_start
4988 .section .gnu.linkonce.t.foo,"ax",@progbits
4989 .type foo, @function
4993 .section .gcc_except_table.foo,"a",@progbits
4996 .section .eh_frame,"a",@progbits
4999 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5000 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5001 | grep "gc-sections option ignored" > /dev/null; then
5002 gcc_cv_ld_eh_gc_sections=no
5003 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5004 | grep gcc_except_table > /dev/null; then
5005 gcc_cv_ld_eh_gc_sections=yes
5011 rm -f conftest.s conftest.o conftest
5015 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5016 gcc_cv_ld_eh_gc_sections=no
5019 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5020 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5021 [Define if your linker supports garbage collection of
5022 sections in presence of EH frames.])
5024 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5026 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5027 gcc_cv_ld_eh_gc_sections_bug=no
5028 if test $in_tree_ld = yes ; then
5029 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5030 && test $in_tree_ld_is_elf = yes; then
5031 gcc_cv_ld_eh_gc_sections_bug=yes
5033 elif test x$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
5034 gcc_cv_ld_eh_gc_sections_bug=yes
5035 cat > conftest.s <<EOF
5038 .type _start, @function
5041 .size _start, .-_start
5042 .section .text.startup.foo,"ax",@progbits
5043 .type foo, @function
5047 .section .gcc_except_table.foo,"a",@progbits
5050 .section .eh_frame,"a",@progbits
5053 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5054 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5055 | grep "gc-sections option ignored" > /dev/null; then
5057 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5058 | grep gcc_except_table > /dev/null; then
5059 gcc_cv_ld_eh_gc_sections_bug=no
5062 rm -f conftest.s conftest.o conftest
5064 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5065 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5066 [Define if your linker has buggy garbage collection of
5067 sections support when .text.startup.foo like sections are used.])
5069 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5071 AC_MSG_CHECKING(linker for compressed debug sections)
5072 # gold/gld support compressed debug sections since binutils 2.19/2.21
5073 if test $in_tree_ld = yes ; then
5074 gcc_cv_ld_compress_debug=0
5075 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5076 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5077 gcc_cv_ld_compress_debug=2
5078 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5079 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5080 && test $in_tree_ld_is_elf = yes; then
5081 gcc_cv_ld_compress_debug=1
5083 elif echo "$ld_ver" | grep GNU > /dev/null; then
5084 gcc_cv_ld_compress_debug=1
5085 if test 0"$ld_date" -lt 20050308; then
5086 if test -n "$ld_date"; then
5087 # If there was date string, but was earlier than 2005-03-08, fail
5088 gcc_cv_ld_compress_debug=0
5089 elif test "$ld_vers_major" -lt 2; then
5090 gcc_cv_ld_compress_debug=0
5091 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5092 gcc_cv_ld_compress_debug=0
5095 if test $ld_is_gold = yes; then
5096 gcc_cv_ld_compress_debug=2
5097 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5103 # Introduced in Solaris 11.2.
5104 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5105 gcc_cv_ld_compress_debug=3
5106 gcc_cv_ld_compress_debug_option="-z compress-sections"
5108 gcc_cv_ld_compress_debug=0
5112 # Assume linkers other than GNU ld don't support compessed debug
5114 gcc_cv_ld_compress_debug=0
5119 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5120 [Define to the level of your linker's compressed debug section support.])
5121 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5122 [Define to the linker option to enable compressed debug sections.])
5123 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5129 AC_CACHE_CHECK(linker --as-needed support,
5130 gcc_cv_ld_as_needed,
5131 [gcc_cv_ld_as_needed=no
5132 gcc_cv_ld_as_needed_option='--as-needed'
5133 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5134 if test $in_tree_ld = yes ; then
5135 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5136 && test $in_tree_ld_is_elf = yes; then
5137 gcc_cv_ld_as_needed=yes
5139 elif test x$gcc_cv_ld != x; then
5140 # Check if linker supports --as-needed and --no-as-needed options
5141 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5142 gcc_cv_ld_as_needed=yes
5145 # Solaris 2 ld always supports -z ignore/-z record.
5147 gcc_cv_ld_as_needed=yes
5148 gcc_cv_ld_as_needed_option="-z ignore"
5149 gcc_cv_ld_no_as_needed_option="-z record"
5154 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5155 # dl_iterate_phdr, i.e. since Solaris 11.
5157 *-*-solaris2.1[[1-9]]*)
5159 i?86-*-* | x86_64-*-*)
5160 if echo "$ld_ver" | grep GNU > /dev/null; then
5161 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5162 gcc_cv_ld_as_needed=no
5168 gcc_cv_ld_as_needed=no
5172 if test x"$gcc_cv_ld_as_needed" = xyes; then
5173 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5174 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5175 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5176 [Define to the linker option to ignore unused dependencies.])
5177 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5178 [Define to the linker option to keep unused dependencies.])
5181 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5182 saved_LDFLAGS="$LDFLAGS"
5183 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5184 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5185 AC_LINK_IFELSE([int main(void) {return 0;}],
5186 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5188 LDFLAGS="$saved_LDFLAGS"
5189 if test "x$gcc_cv_ld_clearcap" = xyes; then
5190 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5191 [Define if the linker supports clearing hardware capabilities via mapfile.])
5192 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5194 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5196 case "$target:$tm_file" in
5197 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5200 emul_name="-melf64lppc"
5203 emul_name="-melf64ppc"
5206 emul_name="-melf64ppc_fbsd"
5209 AC_CACHE_CHECK(linker support for omitting dot symbols,
5210 gcc_cv_ld_no_dot_syms,
5211 [gcc_cv_ld_no_dot_syms=no
5212 if test x"$ld_is_gold" = xyes; then
5213 gcc_cv_ld_no_dot_syms=yes
5214 elif test $in_tree_ld = yes ; then
5215 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5216 gcc_cv_ld_no_dot_syms=yes
5218 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5219 cat > conftest1.s <<EOF
5223 cat > conftest2.s <<EOF
5224 .section ".opd","aw"
5229 .quad .LEfoo,.TOC.@tocbase,0
5235 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5236 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5237 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5238 gcc_cv_ld_no_dot_syms=yes
5240 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5243 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5244 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5245 [Define if your PowerPC64 linker only needs function descriptor syms.])
5248 AC_CACHE_CHECK(linker large toc support,
5249 gcc_cv_ld_large_toc,
5250 [gcc_cv_ld_large_toc=no
5251 if test x"$ld_is_gold" = xyes; then
5252 gcc_cv_ld_large_toc=yes
5253 elif test $in_tree_ld = yes ; then
5254 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5255 gcc_cv_ld_large_toc=yes
5257 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5258 cat > conftest.s <<EOF
5259 .section ".tbss","awT",@nobits
5265 addis 9,13,ie0@got@tprel@ha
5266 ld 9,ie0@got@tprel@l(9)
5268 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5269 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5270 gcc_cv_ld_large_toc=yes
5272 rm -f conftest conftest.o conftest.s
5275 if test x"$gcc_cv_ld_large_toc" = xyes; then
5276 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5277 [Define if your PowerPC64 linker supports a large TOC.])
5280 AC_CACHE_CHECK(linker toc pointer alignment,
5281 gcc_cv_ld_toc_align,
5282 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5283 cat > conftest.s <<EOF
5288 .section .data.rel.ro,"aw",@progbits
5293 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5294 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5295 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5297 rm -f conftest conftest.o conftest.s
5300 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5301 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5302 [Define to .TOC. alignment forced by your linker.])
5309 AC_CACHE_CHECK(linker large toc support,
5310 gcc_cv_ld_large_toc,
5311 [gcc_cv_ld_large_toc=no
5312 if test x$gcc_cv_as != x ; then
5313 cat > conftest.s <<EOF
5323 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5324 gcc_cv_ld_large_toc=yes
5326 rm -f conftest conftest.o conftest.s
5329 if test x"$gcc_cv_ld_large_toc" = xyes; then
5330 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5331 [Define if your PowerPC64 linker supports a large TOC.])
5336 AC_CACHE_CHECK(linker --build-id support,
5338 [gcc_cv_ld_buildid=no
5339 if test $in_tree_ld = yes ; then
5340 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5341 "$gcc_cv_gld_minor_version" -ge 18 -o \
5342 "$gcc_cv_gld_major_version" -gt 2 \
5343 && test $in_tree_ld_is_elf = yes; then
5344 gcc_cv_ld_buildid=yes
5346 elif test x$gcc_cv_ld != x; then
5347 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5348 gcc_cv_ld_buildid=yes
5351 if test x"$gcc_cv_ld_buildid" = xyes; then
5352 AC_DEFINE(HAVE_LD_BUILDID, 1,
5353 [Define if your linker supports --build-id.])
5356 AC_ARG_ENABLE(linker-build-id,
5357 [AS_HELP_STRING([--enable-linker-build-id],
5358 [compiler will always pass --build-id to linker])],
5360 enable_linker_build_id=no)
5362 if test x"$enable_linker_build_id" = xyes; then
5363 if test x"$gcc_cv_ld_buildid" = xyes; then
5364 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5365 [Define if gcc should always pass --build-id to linker.])
5367 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5371 # In binutils 2.21, GNU ld gained support for new emulations fully
5372 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5373 AC_CACHE_CHECK(linker *_sol2 emulation support,
5374 gcc_cv_ld_sol2_emulation,
5375 [gcc_cv_ld_sol2_emulation=no
5376 if test $in_tree_ld = yes ; then
5377 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5378 "$gcc_cv_gld_minor_version" -ge 21 -o \
5379 "$gcc_cv_gld_major_version" -gt 2 \
5380 && test $in_tree_ld_is_elf = yes; then
5381 gcc_cv_ld_sol2_emulation=yes
5383 elif test x$gcc_cv_ld != x; then
5384 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5385 grep _sol2 > /dev/null; then
5386 gcc_cv_ld_sol2_emulation=yes
5389 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5390 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5391 [Define if your linker supports the *_sol2 emulations.])
5394 AC_CACHE_CHECK(linker --sysroot support,
5396 [gcc_cv_ld_sysroot=no
5397 if test $in_tree_ld = yes ; then
5398 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5399 gcc_cv_ld_sysroot=yes
5401 elif test x$gcc_cv_ld != x; then
5402 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5403 gcc_cv_ld_sysroot=yes
5406 if test x"$gcc_cv_ld_sysroot" = xyes; then
5407 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5408 [Define if your linker supports --sysroot.])
5413 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5414 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5415 gcc_cv_solaris_crts,
5416 [gcc_cv_solaris_crts=no
5417 if test x$host != x$target; then
5418 if test "x$with_sysroot" = xyes; then
5419 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5421 target_sysroot="${with_sysroot}"
5424 target_libdir="$target_sysroot/usr/lib"
5425 # At the time they were added, gcrt1.o became a symlink for backwards
5426 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5428 i?86-*-solaris2* | x86_64-*-solaris2*)
5429 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5432 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5437 if test x$gcc_cv_solaris_crts = xyes; then
5438 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5439 [Define if the system-provided CRTs are present on Solaris.])
5442 # Test for stack protector support in target C library.
5443 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5444 gcc_cv_libc_provides_ssp,
5445 [gcc_cv_libc_provides_ssp=no
5448 # All versions of musl provide stack protector
5449 gcc_cv_libc_provides_ssp=yes;;
5450 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5451 # glibc 2.4 and later provides __stack_chk_fail and
5452 # either __stack_chk_guard, or TLS access to stack guard canary.
5453 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5454 [if test -f $target_header_dir/features.h \
5455 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5456 $target_header_dir/features.h > /dev/null; then
5457 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5458 $target_header_dir/features.h > /dev/null && \
5459 test -f $target_header_dir/bits/uClibc_config.h && \
5460 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5461 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5462 gcc_cv_libc_provides_ssp=yes
5464 # all versions of Bionic support stack protector
5465 elif test -f $target_header_dir/sys/cdefs.h \
5466 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5467 $target_header_dir/sys/cdefs.h > /dev/null; then
5468 gcc_cv_libc_provides_ssp=yes
5472 # Avoid complicated tests (see
5473 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5474 # simply assert that glibc does provide this, which is true for all
5475 # realistically usable GNU/Hurd configurations.
5476 # All supported versions of musl provide it as well
5477 gcc_cv_libc_provides_ssp=yes;;
5478 *-*-darwin* | *-*-freebsd*)
5479 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5480 [echo "no __stack_chk_fail on this target"])
5482 *) gcc_cv_libc_provides_ssp=no ;;
5485 if test x$gcc_cv_libc_provides_ssp = xyes; then
5486 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5487 [Define if your target C library provides stack protector support])
5490 # Check whether --enable-default-ssp was given.
5491 AC_ARG_ENABLE(default-ssp,
5492 [AS_HELP_STRING([--enable-default-ssp],
5493 [enable Stack Smashing Protection as default])],[
5494 if test x$gcc_cv_libc_provides_ssp = xyes; then
5496 ia64*-*-*) enable_default_ssp=no ;;
5497 *) enable_default_ssp=$enableval ;;
5500 enable_default_ssp=no
5502 enable_default_ssp=no)
5503 if test x$enable_default_ssp = xyes ; then
5504 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5505 [Define if your target supports default stack protector and it is enabled.])
5507 AC_SUBST([enable_default_ssp])
5509 # Test for <sys/sdt.h> on the target.
5510 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5511 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5513 if test -f $target_header_dir/sys/sdt.h; then
5515 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5516 [Define if your target C library provides sys/sdt.h])
5518 AC_MSG_RESULT($have_sys_sdt_h)
5520 # Check if TFmode long double should be used by default or not.
5521 # Some glibc targets used DFmode long double, but with glibc 2.4
5522 # and later they can use TFmode.
5524 powerpc*-*-linux* | \
5528 AC_ARG_WITH(long-double-128,
5529 [AS_HELP_STRING([--with-long-double-128],
5530 [use 128-bit long double by default])],
5531 gcc_cv_target_ldbl128="$with_long_double_128",
5532 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5533 [gcc_cv_target_ldbl128=no
5534 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5535 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5536 && gcc_cv_target_ldbl128=yes
5540 if test x$gcc_cv_target_ldbl128 = xyes; then
5541 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5542 [Define if TFmode long double should be the default])
5545 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5546 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5547 gcc_cv_libc_provides_hwcap_in_tcb=no
5550 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5553 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5554 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5555 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5558 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5559 gcc_cv_target_dl_iterate_phdr=unknown
5561 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5562 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5563 # libdl there, both complicating its use and breaking compatibility
5564 # between Solaris 10 updates.
5565 *-*-solaris2.1[[1-9]]*)
5566 # <link.h> needs both a dl_iterate_phdr declaration and support for
5567 # compilation with largefile support.
5568 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5569 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5570 gcc_cv_target_dl_iterate_phdr=yes
5572 gcc_cv_target_dl_iterate_phdr=no
5575 *-*-dragonfly* | *-*-freebsd*)
5576 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5577 gcc_cv_target_dl_iterate_phdr=yes
5579 gcc_cv_target_dl_iterate_phdr=no
5583 gcc_cv_target_dl_iterate_phdr=yes
5586 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5587 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5588 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5589 [Define if your target C library provides the `dl_iterate_phdr' function.])
5591 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5593 # We no longer support different GC mechanisms. Emit an error if
5594 # the user configures with --with-gc.
5596 [AS_HELP_STRING([--with-gc={page,zone}],
5597 [this option is not supported anymore. It used to choose
5598 the garbage collection mechanism to use with the compiler])],
5599 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5602 # Libraries to use on the host. This will normally be set by the top
5603 # level Makefile. Here we simply capture the value for our Makefile.
5604 if test -z "${HOST_LIBS+set}"; then
5609 # Use the system's zlib library.
5612 dnl Very limited version of automake's enable-maintainer-mode
5614 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5615 dnl maintainer-mode is disabled by default
5616 AC_ARG_ENABLE(maintainer-mode,
5617 [AS_HELP_STRING([--enable-maintainer-mode],
5618 [enable make rules and dependencies not useful
5619 (and sometimes confusing) to the casual installer])],
5620 maintainer_mode=$enableval,
5623 AC_MSG_RESULT($maintainer_mode)
5625 if test "$maintainer_mode" = "yes"; then
5632 dnl Whether to prevent multiple front-ends from linking at the same time
5634 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5635 AC_ARG_ENABLE(link-mutex,
5636 [AS_HELP_STRING([--enable-link-mutex],
5637 [avoid linking multiple front-ends at once to avoid thrashing
5638 on the build machine])],
5639 do_link_mutex=$enableval,
5641 AC_MSG_RESULT($do_link_mutex)
5643 if test "$do_link_mutex" = "yes"; then
5648 AC_SUBST(DO_LINK_MUTEX)
5654 # Make empty files to contain the specs and options for each language.
5655 # Then add #include lines to for a compiler that has specs and/or options.
5661 # These (without "all_") are set in each config-lang.in.
5662 # `language' must be a single word so is spelled singularly.
5665 all_outputs='Makefile'
5666 # List of language makefile fragments.
5668 # Additional files for gengtype
5669 all_gtfiles="$target_gtfiles"
5671 # These are the languages that are set in --enable-languages,
5672 # and are available in the GCC tree.
5673 all_selected_languages=
5675 # Add the language fragments.
5676 # Languages are added via two mechanisms. Some information must be
5677 # recorded in makefile variables, these are defined in config-lang.in.
5678 # We accumulate them and plug them into the main Makefile.
5679 # The other mechanism is a set of hooks for each of the main targets
5680 # like `clean', `install', etc.
5682 language_hooks="Make-hooks"
5684 for lang in ${srcdir}/*/config-lang.in
5687 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5689 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5690 if test "x$lang_alias" = x
5692 echo "$lang doesn't set \$language." 1>&2
5695 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5696 subdirs="$subdirs $subdir"
5698 # $gcc_subdir is where the gcc integration files are to be found
5699 # for a language, both for internal compiler purposes (compiler
5700 # sources implementing front-end to GCC tree converters), and for
5701 # build infrastructure purposes (Make-lang.in, etc.)
5703 # This will be <subdir> (relative to $srcdir) if a line like
5704 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5705 # is found in <langdir>/config-lang.in, and will remain <langdir>
5708 # Except for the language alias (fetched above), the regular
5709 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5710 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5711 # only this and the language alias.
5713 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5714 if [ "$gcc_subdir" = "" ]; then
5715 gcc_subdir="$subdir"
5718 case ",$enable_languages," in
5720 all_selected_languages="$all_selected_languages $lang_alias"
5721 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5722 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5734 . ${srcdir}/$gcc_subdir/config-lang.in
5735 if test "x$language" = x
5737 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5742 case ",$enable_languages," in
5745 for i in $subdir_requires; do
5746 test -f "${srcdir}/$i/config-lang.in" && continue
5754 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5755 if test -f $srcdir/$gcc_subdir/lang.opt; then
5756 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5757 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5759 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5760 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5762 all_languages="$all_languages $language"
5763 all_compilers="$all_compilers $compilers"
5764 all_outputs="$all_outputs $outputs"
5765 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5766 case ",$enable_languages," in
5768 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5770 AC_SUBST(enable_lto)
5777 for language in $all_selected_languages
5779 check_languages="$check_languages check-$language"
5782 # We link each language in with a set of hooks, reached indirectly via
5783 # lang.${target}. Only do so for selected languages.
5787 target_list="all.cross start.encap rest.encap tags \
5788 install-common install-man install-info install-pdf install-html dvi \
5789 pdf html uninstall info man srcextra srcman srcinfo \
5790 mostlyclean clean distclean maintainer-clean install-plugin"
5792 for t in $target_list
5795 for lang in $all_selected_languages
5799 echo "lang.$t: $x" >> Make-hooks
5803 # Option include files
5806 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5807 option_includes="option-includes.mk"
5808 AC_SUBST_FILE(option_includes)
5816 echo "dir ." > .gdbinit
5817 echo "dir ${srcdir}" >> .gdbinit
5818 if test x$gdb_needs_out_file_path = xyes
5820 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5822 if test "x$subdirs" != x; then
5825 echo "dir ${srcdir}/$s" >> .gdbinit
5828 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5829 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5831 # Put a breakpoint on __asan_report_error to help with debugging buffer
5834 *-fsanitize=address*)
5835 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5839 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5840 AC_SUBST(gcc_tooldir)
5843 # Find a directory in which to install a shared libgcc.
5845 AC_ARG_ENABLE(version-specific-runtime-libs,
5846 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5847 [specify that runtime libraries should be
5848 installed in a compiler-specific directory])])
5850 # Substitute configuration variables
5853 AC_SUBST(all_compilers)
5854 AC_SUBST(all_gtfiles)
5855 AC_SUBST(all_lang_makefrags)
5856 AC_SUBST(all_languages)
5857 AC_SUBST(all_selected_languages)
5858 AC_SUBST(build_exeext)
5859 AC_SUBST(build_install_headers_dir)
5860 AC_SUBST(build_xm_file_list)
5861 AC_SUBST(build_xm_include_list)
5862 AC_SUBST(build_xm_defines)
5863 AC_SUBST(build_file_translate)
5864 AC_SUBST(check_languages)
5865 AC_SUBST(cpp_install_dir)
5866 AC_SUBST(xmake_file)
5867 AC_SUBST(tmake_file)
5868 AC_SUBST(TM_ENDIAN_CONFIG)
5869 AC_SUBST(TM_MULTILIB_CONFIG)
5870 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5871 AC_SUBST(extra_gcc_objs)
5872 AC_SUBST(user_headers_inc_next_pre)
5873 AC_SUBST(user_headers_inc_next_post)
5874 AC_SUBST(extra_headers_list)
5875 AC_SUBST(extra_objs)
5876 AC_SUBST(extra_programs)
5877 AC_SUBST(float_h_file)
5878 AC_SUBST(gcc_config_arguments)
5879 AC_SUBST(gcc_gxx_include_dir)
5880 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5881 AC_SUBST(host_exeext)
5882 AC_SUBST(host_xm_file_list)
5883 AC_SUBST(host_xm_include_list)
5884 AC_SUBST(host_xm_defines)
5885 AC_SUBST(out_host_hook_obj)
5887 AC_SUBST(lang_opt_files)
5888 AC_SUBST(lang_specs_files)
5889 AC_SUBST(lang_tree_files)
5890 AC_SUBST(local_prefix)
5892 AC_SUBST(objc_boehm_gc)
5894 AC_SUBST(out_object_file)
5895 AC_SUBST(common_out_file)
5896 AC_SUBST(common_out_object_file)
5897 AC_SUBST(tm_file_list)
5898 AC_SUBST(tm_include_list)
5899 AC_SUBST(tm_defines)
5900 AC_SUBST(tm_p_file_list)
5901 AC_SUBST(tm_p_include_list)
5902 AC_SUBST(xm_file_list)
5903 AC_SUBST(xm_include_list)
5904 AC_SUBST(xm_defines)
5905 AC_SUBST(use_gcc_stdint)
5906 AC_SUBST(c_target_objs)
5907 AC_SUBST(cxx_target_objs)
5908 AC_SUBST(fortran_target_objs)
5909 AC_SUBST(target_cpu_default)
5911 AC_SUBST_FILE(language_hooks)
5914 if test x${build} = x${host} ; then
5915 if test x${host} = x${target} ; then
5916 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5918 echo "Links are now set up to build a cross-compiler" 1>&2
5919 echo " from ${host} to ${target}." 1>&2
5922 if test x${host} = x${target} ; then
5923 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5924 echo " for ${target}." 1>&2
5926 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5927 echo " from ${host} to ${target}." 1>&2
5931 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5932 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5934 AC_ARG_VAR(ISLLIBS,[How to link isl])
5935 AC_ARG_VAR(ISLINC,[How to find isl include files])
5936 if test "x${ISLLIBS}" != "x" ; then
5937 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5940 # Check whether isl_options_set_schedule_serialize_sccs is available;
5941 # it's new in isl 0.15.
5942 if test "x${ISLLIBS}" != "x" ; then
5943 saved_CXXFLAGS="$CXXFLAGS"
5944 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
5946 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5948 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5949 AC_TRY_LINK([#include <isl/schedule.h>],
5950 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5951 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5952 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5953 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5956 CXXFLAGS="$saved_CXXFLAGS"
5958 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5959 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5960 [Define if isl_options_set_schedule_serialize_sccs exists.])
5965 AC_SUBST(pluginlibs)
5966 AC_SUBST(enable_plugin)
5967 if test x"$enable_plugin" = x"yes"; then
5968 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5972 # Enable --enable-host-shared
5973 AC_ARG_ENABLE(host-shared,
5974 [AS_HELP_STRING([--enable-host-shared],
5975 [build host code as shared libraries])],
5976 [PICFLAG=-fPIC], [PICFLAG=])
5977 AC_SUBST(enable_host_shared)
5981 AC_ARG_ENABLE(libquadmath-support,
5982 [AS_HELP_STRING([--disable-libquadmath-support],
5983 [disable libquadmath support for Fortran])],
5984 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5985 ENABLE_LIBQUADMATH_SUPPORT=yes)
5986 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5987 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5988 [Define to 1 to enable libquadmath support])
5992 # Specify what hash style to use by default.
5993 AC_ARG_WITH([linker-hash-style],
5994 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5995 [specify the linker hash style])],
5996 [case x"$withval" in
5998 LINKER_HASH_STYLE=sysv
6001 LINKER_HASH_STYLE=gnu
6004 LINKER_HASH_STYLE=both
6007 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6010 [LINKER_HASH_STYLE=''])
6011 if test x"${LINKER_HASH_STYLE}" != x; then
6012 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6013 [The linker hash style])
6016 # Specify what should be the default of -fdiagnostics-color option.
6017 AC_ARG_WITH([diagnostics-color],
6018 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6019 [specify the default of -fdiagnostics-color option
6020 auto-if-env stands for -fdiagnostics-color=auto if
6021 GCC_COLOR environment variable is present and
6022 -fdiagnostics-color=never otherwise])],
6023 [case x"$withval" in
6025 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6028 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6031 DIAGNOSTICS_COLOR_DEFAULT=-1
6034 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6037 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6040 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6041 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6042 [The default for -fdiagnostics-color option])
6044 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6045 # of jit/jit-playback.c.
6046 cat > gcc-driver-name.h <<EOF
6047 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6050 # Check whether --enable-default-pie was given.
6051 AC_ARG_ENABLE(default-pie,
6052 [AS_HELP_STRING([--enable-default-pie],
6053 [enable Position Independent Executable as default])],
6054 enable_default_pie=$enableval,
6055 enable_default_pie=no)
6056 if test x$enable_default_pie = xyes ; then
6057 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6058 [Define if your target supports default PIE and it is enabled.])
6060 AC_SUBST([enable_default_pie])
6062 # Check if -fno-PIE works.
6063 AC_CACHE_CHECK([for -fno-PIE option],
6065 [saved_CXXFLAGS="$CXXFLAGS"
6066 CXXFLAGS="$CXXFLAGS -fno-PIE"
6067 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6068 [gcc_cv_c_no_fpie=yes],
6069 [gcc_cv_c_no_fpie=no])
6070 CXXFLAGS="$saved_CXXFLAGS"])
6071 if test "$gcc_cv_c_no_fpie" = "yes"; then
6072 NO_PIE_CFLAGS="-fno-PIE"
6074 AC_SUBST([NO_PIE_CFLAGS])
6076 # Check if -no-pie works.
6077 AC_CACHE_CHECK([for -no-pie option],
6079 [saved_LDFLAGS="$LDFLAGS"
6080 LDFLAGS="$LDFLAGS -no-pie"
6081 AC_LINK_IFELSE([int main(void) {return 0;}],
6082 [gcc_cv_no_pie=yes],
6084 LDFLAGS="$saved_LDFLAGS"])
6085 if test "$gcc_cv_no_pie" = "yes"; then
6086 NO_PIE_FLAG="-no-pie"
6088 AC_SUBST([NO_PIE_FLAG])
6090 # Check linker supports '-z bndplt'
6091 ld_bndplt_support=no
6092 AC_MSG_CHECKING(linker -z bndplt option)
6093 if test x"$ld_is_gold" = xno; then
6094 if test $in_tree_ld = yes ; then
6095 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6096 ld_bndplt_support=yes
6098 elif test x$gcc_cv_ld != x; then
6099 # Check if linker supports -a bndplt option
6100 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6101 ld_bndplt_support=yes
6105 if test x"$ld_bndplt_support" = xyes; then
6106 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6107 [Define if your linker supports -z bndplt])
6109 AC_MSG_RESULT($ld_bndplt_support)
6111 # Configure the subdirectories
6112 # AC_CONFIG_SUBDIRS($subdirs)
6114 # Create the Makefile
6115 # and configure language subdirectories
6116 AC_CONFIG_FILES($all_outputs)
6118 AC_CONFIG_COMMANDS([default],
6120 case ${CONFIG_HEADERS} in
6121 *auto-host.h:config.in*)
6124 # Make sure all the subdirs exist.
6125 for d in $subdirs doc build common c-family
6127 test -d $d || mkdir $d
6130 [subdirs='$subdirs'])