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 $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4158 [Define to 1 if your assembler and linker support @tlsldm.])
4163 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4164 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4166 addl r15 = @ltoffx(x#), gp
4168 ld8.mov r16 = [[r15]], x#],,
4169 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4170 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4178 gcc_GAS_CHECK_FEATURE([.machine directive support],
4179 gcc_cv_as_machine_directive,,,
4180 [ .machine ppc7400])
4181 if test x$gcc_cv_as_machine_directive != xyes; then
4182 echo "*** This target requires an assembler supporting \".machine\"" >&2
4183 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4184 test x$build = x$target && exit 1
4190 *-*-aix*) conftest_s=' .machine "pwr5"
4193 *-*-darwin*) conftest_s=' .text
4195 *) conftest_s=' .machine power4
4200 gcc_GAS_CHECK_FEATURE([mfcr field support],
4201 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4203 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4204 [Define if your assembler supports mfcr field.])])
4207 *-*-aix*) conftest_s=' .machine "pwr5"
4210 *) conftest_s=' .machine power5
4215 gcc_GAS_CHECK_FEATURE([popcntb support],
4216 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4218 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4219 [Define if your assembler supports popcntb field.])])
4222 *-*-aix*) conftest_s=' .machine "pwr5x"
4225 *) conftest_s=' .machine power5
4230 gcc_GAS_CHECK_FEATURE([fp round support],
4231 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4233 [AC_DEFINE(HAVE_AS_FPRND, 1,
4234 [Define if your assembler supports fprnd.])])
4237 *-*-aix*) conftest_s=' .machine "pwr6"
4240 *) conftest_s=' .machine power6
4245 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4246 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4248 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4249 [Define if your assembler supports mffgpr and mftgpr.])])
4252 *-*-aix*) conftest_s=' .csect .text[[PR]]
4254 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4258 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4259 *) conftest_s=' .text
4261 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4264 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4265 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4267 [AC_DEFINE(HAVE_AS_REL16, 1,
4268 [Define if your assembler supports R_PPC_REL16 relocs.])])
4271 *-*-aix*) conftest_s=' .machine "pwr6"
4274 *) conftest_s=' .machine power6
4279 gcc_GAS_CHECK_FEATURE([compare bytes support],
4280 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4282 [AC_DEFINE(HAVE_AS_CMPB, 1,
4283 [Define if your assembler supports cmpb.])])
4286 *-*-aix*) conftest_s=' .machine "pwr6"
4289 *) conftest_s=' .machine power6
4294 gcc_GAS_CHECK_FEATURE([decimal float support],
4295 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4297 [AC_DEFINE(HAVE_AS_DFP, 1,
4298 [Define if your assembler supports DFP instructions.])])
4301 *-*-aix*) conftest_s=' .machine "pwr7"
4304 *) conftest_s=' .machine power7
4309 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4310 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4312 [AC_DEFINE(HAVE_AS_VSX, 1,
4313 [Define if your assembler supports VSX instructions.])])
4316 *-*-aix*) conftest_s=' .machine "pwr7"
4319 *) conftest_s=' .machine power7
4324 gcc_GAS_CHECK_FEATURE([popcntd support],
4325 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4327 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4328 [Define if your assembler supports POPCNTD instructions.])])
4331 *-*-aix*) conftest_s=' .machine "pwr8"
4332 .csect .text[[PR]]';;
4333 *) conftest_s=' .machine power8
4337 gcc_GAS_CHECK_FEATURE([power8 support],
4338 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4340 [AC_DEFINE(HAVE_AS_POWER8, 1,
4341 [Define if your assembler supports POWER8 instructions.])])
4344 *-*-aix*) conftest_s=' .machine "pwr9"
4345 .csect .text[[PR]]';;
4346 *) conftest_s=' .machine power9
4350 gcc_GAS_CHECK_FEATURE([power9 support],
4351 gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4353 [AC_DEFINE(HAVE_AS_POWER9, 1,
4354 [Define if your assembler supports POWER9 instructions.])])
4357 *-*-aix*) conftest_s=' .csect .text[[PR]]
4359 *) conftest_s=' .text
4363 gcc_GAS_CHECK_FEATURE([lwsync support],
4364 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4366 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4367 [Define if your assembler supports LWSYNC instructions.])])
4370 *-*-aix*) conftest_s=' .machine "476"
4373 *) conftest_s=' .machine "476"
4378 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4379 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4381 [AC_DEFINE(HAVE_AS_DCI, 1,
4382 [Define if your assembler supports the DCI/ICI instructions.])])
4384 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4385 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4386 [.gnu_attribute 4,1],,
4387 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4388 [Define if your assembler supports .gnu_attribute.])])
4390 gcc_GAS_CHECK_FEATURE([tls marker support],
4391 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4392 [ bl __tls_get_addr(x@tlsgd)],,
4393 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4394 [Define if your assembler supports arg info for __tls_get_addr.])])
4396 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4397 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4398 [ .reloc .,R_PPC64_ENTRY; nop],,
4399 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4400 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4404 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4405 gcc_cv_as_aix_ref, [2,21,0],,
4406 [ .csect stuff[[rw]]
4412 [AC_DEFINE(HAVE_AS_REF, 1,
4413 [Define if your assembler supports .ref])])
4415 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4416 gcc_cv_as_aix_dwloc, [2,21,0],,
4421 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4422 [Define if your assembler supports AIX debug frame section label reference.])])
4428 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4429 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4430 [ lw $4,%gp_rel(foo)($4)],,
4431 [if test x$target_cpu_default = x
4432 then target_cpu_default=MASK_EXPLICIT_RELOCS
4433 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4436 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4437 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4438 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4439 [Define if the assembler understands -mno-shared.])])
4441 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4442 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4443 [.gnu_attribute 4,1],,
4444 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4445 [Define if your assembler supports .gnu_attribute.])])
4447 gcc_GAS_CHECK_FEATURE([.module support],
4448 gcc_cv_as_mips_dot_module,,[-32],
4451 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4452 [Define if your assembler supports .module.])])
4453 if test x$gcc_cv_as_mips_dot_module = xno \
4454 && test x$with_fp_32 != x; then
4456 [Requesting --with-fp-32= requires assembler support for .module.])
4459 gcc_GAS_CHECK_FEATURE([.micromips support],
4460 gcc_cv_as_micromips_support,,[--fatal-warnings],
4462 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4463 [Define if your assembler supports the .set micromips directive])])
4465 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4466 gcc_cv_as_mips_dtprelword, [2,18,0],,
4467 [.section .tdata,"awT",@progbits
4471 .dtprelword x+0x8000],,
4472 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4473 [Define if your assembler supports .dtprelword.])])
4475 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4476 gcc_cv_as_mips_dspr1_mult,,,
4486 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4487 [Define if your assembler supports DSPR1 mult.])])
4489 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4490 gcc_cv_as_ld_jalr_reloc=no
4491 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4492 if test $in_tree_ld = yes ; then
4493 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4494 && test $in_tree_ld_is_elf = yes; then
4495 gcc_cv_as_ld_jalr_reloc=yes
4497 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4498 echo ' .ent x' > conftest.s
4499 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4500 echo ' lw $25,%call16(y)($28)' >> conftest.s
4501 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4502 echo '1: jalr $25' >> conftest.s
4503 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4504 echo '1: jalr $25' >> conftest.s
4505 echo ' .end x' >> conftest.s
4506 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4507 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4508 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4509 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4510 gcc_cv_as_ld_jalr_reloc=yes
4516 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4517 if test x$target_cpu_default = x; then
4518 target_cpu_default=MASK_RELAX_PIC_CALLS
4520 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4523 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4525 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4526 [gcc_cv_ld_mips_personality_relaxation],
4527 [gcc_cv_ld_mips_personality_relaxation=no
4528 if test $in_tree_ld = yes ; then
4529 if test "$gcc_cv_gld_major_version" -eq 2 \
4530 -a "$gcc_cv_gld_minor_version" -ge 21 \
4531 -o "$gcc_cv_gld_major_version" -gt 2; then
4532 gcc_cv_ld_mips_personality_relaxation=yes
4534 elif test x$gcc_cv_as != x \
4535 -a x$gcc_cv_ld != x \
4536 -a x$gcc_cv_readelf != x ; then
4537 cat > conftest.s <<EOF
4539 .cfi_personality 0x80,indirect_ptr
4546 .section .data,"aw",@progbits
4550 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4551 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4552 if $gcc_cv_readelf -d conftest 2>&1 \
4553 | grep TEXTREL > /dev/null 2>&1; then
4555 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4556 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4559 gcc_cv_ld_mips_personality_relaxation=yes
4563 rm -f conftest.s conftest.o conftest])
4564 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4565 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4566 [Define if your linker can relax absolute .eh_frame personality
4567 pointers into PC-relative form.])
4570 gcc_GAS_CHECK_FEATURE([-mnan= support],
4571 gcc_cv_as_mips_nan,,
4573 [AC_DEFINE(HAVE_AS_NAN, 1,
4574 [Define if the assembler understands -mnan=.])])
4575 if test x$gcc_cv_as_mips_nan = xno \
4576 && test x$with_nan != x; then
4578 [Requesting --with-nan= requires assembler support for -mnan=])
4582 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4583 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4584 [.gnu_attribute 8,1],,
4585 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4586 [Define if your assembler supports .gnu_attribute.])])
4587 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4588 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4593 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4594 [Define if your assembler supports .machine and .machinemode.])])
4595 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4596 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4597 [ .machine z13+vx ],,
4598 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4599 [Define if your assembler supports architecture modifiers.])])
4603 # Mips and HP-UX need the GNU assembler.
4604 # Linux on IA64 might be able to use the Intel assembler.
4607 mips*-*-* | *-*-hpux* )
4608 if test x$gas_flag = xyes \
4609 || test x"$host" != x"$build" \
4610 || test ! -x "$gcc_cv_as" \
4611 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4614 echo "*** This configuration requires the GNU assembler" >&2
4620 # ??? Not all targets support dwarf2 debug_line, even within a version
4621 # of gas. Moreover, we need to emit a valid instruction to trigger any
4622 # info to the output file. So, as supported targets are added to gas 2.11,
4623 # add some instruction here to (also) show we expect this might work.
4624 # ??? Once 2.11 is released, probably need to add first known working
4625 # version to the per-target configury.
4627 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4628 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4629 | visium | xstormy16 | xtensa)
4639 if test x"$insn" != x; then
4641 .file 1 \"conftest.s\"
4644 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4645 gcc_cv_as_dwarf2_debug_line,
4646 [elf,2,11,0],, [$conftest_s],
4647 [if test x$gcc_cv_objdump != x \
4648 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4649 | grep debug_line > /dev/null 2>&1; then
4650 gcc_cv_as_dwarf2_debug_line=yes
4653 # The .debug_line file table must be in the exact order that
4654 # we specified the files, since these indices are also used
4655 # by DW_AT_decl_file. Approximate this test by testing if
4656 # the assembler bitches if the same index is assigned twice.
4657 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4658 gcc_cv_as_dwarf2_file_buggy,,,
4662 if test $gcc_cv_as_dwarf2_debug_line = yes \
4663 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4664 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4665 [Define if your assembler supports dwarf2 .file/.loc directives,
4666 and preserves file table indices exactly as given.])
4669 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4670 gcc_cv_as_gdwarf2_flag,
4671 [elf,2,11,0], [--gdwarf2], [$insn],,
4672 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4673 [Define if your assembler supports the --gdwarf2 option.])])
4675 gcc_GAS_CHECK_FEATURE([--gstabs option],
4676 gcc_cv_as_gstabs_flag,
4677 [elf,2,11,0], [--gstabs], [$insn],,
4678 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4679 [Define if your assembler supports the --gstabs option.])])
4681 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4682 gcc_cv_as_debug_prefix_map_flag,
4683 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4684 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4685 [Define if your assembler supports the --debug-prefix-map option.])])
4688 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4689 gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4690 [# gas compiled without zlib cannot compress debug sections and warns
4691 # about it, but still exits successfully. So check for this, too.
4692 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4694 gcc_cv_as_compress_debug=0
4695 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4697 gcc_cv_as_compress_debug=1
4698 gcc_cv_as_compress_debug_option="--compress-debug-sections"
4699 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4701 gcc_cv_as_compress_debug=0
4702 # FIXME: Future gas versions will support ELF gABI style via
4703 # --compress-debug-sections[=type].
4705 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4706 [Define to the level of your assembler's compressed debug section support.])
4707 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4708 [Define to the assembler option to enable compressed debug sections.])
4709 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4710 [Define to the assembler option to disable compressed debug sections.])
4712 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4715 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4716 [Define if your assembler supports .lcomm with an alignment field.])])
4718 if test x$with_sysroot = x && test x$host = x$target \
4719 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4720 && test "$prefix" != "NONE"; then
4721 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4722 [Define to PREFIX/include if cpp should also search that directory.])
4725 # Determine the version of glibc, if any, used on the target.
4726 AC_MSG_CHECKING([for target glibc version])
4727 AC_ARG_WITH([glibc-version],
4728 [AS_HELP_STRING([--with-glibc-version=M.N],
4729 [assume GCC used with glibc version M.N or later])], [
4730 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4731 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4732 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4734 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4736 glibc_version_major=0
4737 glibc_version_minor=0
4738 [if test -f $target_header_dir/features.h \
4739 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4740 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4741 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4742 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4744 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4745 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4746 [GNU C Library major version number used on the target, or 0.])
4747 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4748 [GNU C Library minor version number used on the target, or 0.])
4750 AC_ARG_ENABLE(gnu-unique-object,
4751 [AS_HELP_STRING([--enable-gnu-unique-object],
4752 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4753 [case $enable_gnu_unique_object in
4755 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4756 Valid choices are 'yes' and 'no'.]) ;;
4758 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4760 [.type foo, '$target_type_format_char'gnu_unique_object],,
4761 # We need to unquote above to to use the definition from config.gcc.
4762 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4763 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4765 if test x$enable_gnu_unique_object = xyes; then
4766 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4767 [Define if your assembler supports @gnu_unique_object.])
4770 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4771 [gcc_cv_as_line_zero],
4772 [gcc_cv_as_line_zero=no
4773 if test $in_tree_gas = yes; then
4774 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4775 elif test "x$gcc_cv_as" != x; then
4776 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4777 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4778 test "x`cat conftest.out`" = x
4780 gcc_cv_as_line_zero=yes
4782 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4783 cat conftest.s >&AS_MESSAGE_LOG_FD
4784 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4785 cat conftest.out >&AS_MESSAGE_LOG_FD
4787 rm -f conftest.o conftest.s conftest.out
4789 if test "x$gcc_cv_as_line_zero" = xyes; then
4790 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4791 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4794 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4795 gcc_cv_ld_eh_frame_hdr=no
4796 if test $in_tree_ld = yes ; then
4797 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4798 && test $in_tree_ld_is_elf = yes; then
4799 gcc_cv_ld_eh_frame_hdr=yes
4801 elif test x$gcc_cv_ld != x; then
4802 if echo "$ld_ver" | grep GNU > /dev/null; then
4803 # Check if linker supports --eh-frame-hdr option
4804 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4805 gcc_cv_ld_eh_frame_hdr=yes
4810 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4811 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4812 gcc_cv_ld_eh_frame_hdr=yes
4818 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4819 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4820 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4821 [Define if your linker supports .eh_frame_hdr.])
4823 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4825 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4826 gcc_cv_ld_eh_frame_ciev3=no
4827 if test $in_tree_ld = yes ; then
4828 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4829 && test $in_tree_ld_is_elf = yes; then
4830 gcc_cv_ld_eh_frame_ciev3=yes
4832 elif test x$gcc_cv_ld != x; then
4833 if echo "$ld_ver" | grep GNU > /dev/null; then
4834 gcc_cv_ld_eh_frame_ciev3=yes
4835 if test 0"$ld_date" -lt 20040513; then
4836 if test -n "$ld_date"; then
4837 # If there was date string, but was earlier than 2004-05-13, fail
4838 gcc_cv_ld_eh_frame_ciev3=no
4839 elif test "$ld_vers_major" -lt 2; then
4840 gcc_cv_ld_eh_frame_ciev3=no
4841 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4842 gcc_cv_ld_eh_frame_ciev3=no
4848 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4849 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4850 gcc_cv_ld_eh_frame_ciev3=yes
4856 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4857 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4858 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4859 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4861 AC_MSG_CHECKING(linker position independent executable support)
4863 if test $in_tree_ld = yes ; then
4865 # Full PIE support on Solaris was only introduced in gld 2.26.
4866 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
4867 *) gcc_gld_pie_min_version=15 ;;
4869 if test "$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 \
4870 && test $in_tree_ld_is_elf = yes; then
4873 elif test x$gcc_cv_ld != x; then
4874 # Check if linker supports -pie option
4875 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4879 if echo "$ld_ver" | grep GNU > /dev/null \
4880 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4887 *-*-solaris2.1[[1-9]]*)
4888 # Solaris 11.x and Solaris 12 added PIE support.
4889 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4896 if test x"$gcc_cv_ld_pie" = xyes; then
4897 AC_DEFINE(HAVE_LD_PIE, 1,
4898 [Define if your linker supports PIE option.])
4900 AC_MSG_RESULT($gcc_cv_ld_pie)
4902 AC_MSG_CHECKING(linker PIE support with copy reloc)
4903 gcc_cv_ld_pie_copyreloc=no
4904 if test $gcc_cv_ld_pie = yes ; then
4905 if test $in_tree_ld = yes ; then
4906 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4907 gcc_cv_ld_pie_copyreloc=yes
4909 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4910 # Check if linker supports -pie option with copy reloc
4912 i?86-*-linux* | x86_64-*-linux*)
4913 cat > conftest1.s <<EOF
4916 .type a_glob, @object
4921 cat > conftest2.s <<EOF
4924 .type main, @function
4926 movl %eax, a_glob(%rip)
4929 .section .data.rel,"aw",@progbits
4934 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4935 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4936 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4937 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4938 gcc_cv_ld_pie_copyreloc=yes
4940 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4945 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4946 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4947 [Define 0/1 if your linker supports -pie option with copy reloc.])
4948 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4950 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4951 gcc_cv_ld_eh_gc_sections=no
4952 if test $in_tree_ld = yes ; then
4953 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4954 && test $in_tree_ld_is_elf = yes; then
4955 gcc_cv_ld_eh_gc_sections=yes
4957 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4958 cat > conftest.s <<EOF
4961 .type _start, @function
4964 .size _start, .-_start
4965 .section .text.foo,"ax",@progbits
4966 .type foo, @function
4970 .section .gcc_except_table.foo,"a",@progbits
4973 .section .eh_frame,"a",@progbits
4976 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4977 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4978 | grep "gc-sections option ignored" > /dev/null; then
4979 gcc_cv_ld_eh_gc_sections=no
4980 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4981 | grep gcc_except_table > /dev/null; then
4982 gcc_cv_ld_eh_gc_sections=yes
4983 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4984 if test x$gcc_cv_as_comdat_group != xyes; then
4985 gcc_cv_ld_eh_gc_sections=no
4986 cat > conftest.s <<EOF
4989 .type _start, @function
4992 .size _start, .-_start
4993 .section .gnu.linkonce.t.foo,"ax",@progbits
4994 .type foo, @function
4998 .section .gcc_except_table.foo,"a",@progbits
5001 .section .eh_frame,"a",@progbits
5004 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5005 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5006 | grep "gc-sections option ignored" > /dev/null; then
5007 gcc_cv_ld_eh_gc_sections=no
5008 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5009 | grep gcc_except_table > /dev/null; then
5010 gcc_cv_ld_eh_gc_sections=yes
5016 rm -f conftest.s conftest.o conftest
5020 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5021 gcc_cv_ld_eh_gc_sections=no
5024 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5025 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5026 [Define if your linker supports garbage collection of
5027 sections in presence of EH frames.])
5029 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5031 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5032 gcc_cv_ld_eh_gc_sections_bug=no
5033 if test $in_tree_ld = yes ; then
5034 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5035 && test $in_tree_ld_is_elf = yes; then
5036 gcc_cv_ld_eh_gc_sections_bug=yes
5038 elif test x$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
5039 gcc_cv_ld_eh_gc_sections_bug=yes
5040 cat > conftest.s <<EOF
5043 .type _start, @function
5046 .size _start, .-_start
5047 .section .text.startup.foo,"ax",@progbits
5048 .type foo, @function
5052 .section .gcc_except_table.foo,"a",@progbits
5055 .section .eh_frame,"a",@progbits
5058 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5059 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5060 | grep "gc-sections option ignored" > /dev/null; then
5062 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5063 | grep gcc_except_table > /dev/null; then
5064 gcc_cv_ld_eh_gc_sections_bug=no
5067 rm -f conftest.s conftest.o conftest
5069 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5070 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5071 [Define if your linker has buggy garbage collection of
5072 sections support when .text.startup.foo like sections are used.])
5074 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5076 AC_MSG_CHECKING(linker for compressed debug sections)
5077 # gold/gld support compressed debug sections since binutils 2.19/2.21
5078 if test $in_tree_ld = yes ; then
5079 gcc_cv_ld_compress_debug=0
5080 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5081 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5082 gcc_cv_ld_compress_debug=2
5083 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5084 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5085 && test $in_tree_ld_is_elf = yes; then
5086 gcc_cv_ld_compress_debug=1
5088 elif echo "$ld_ver" | grep GNU > /dev/null; then
5089 gcc_cv_ld_compress_debug=1
5090 if test 0"$ld_date" -lt 20050308; then
5091 if test -n "$ld_date"; then
5092 # If there was date string, but was earlier than 2005-03-08, fail
5093 gcc_cv_ld_compress_debug=0
5094 elif test "$ld_vers_major" -lt 2; then
5095 gcc_cv_ld_compress_debug=0
5096 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5097 gcc_cv_ld_compress_debug=0
5100 if test $ld_is_gold = yes; then
5101 gcc_cv_ld_compress_debug=2
5102 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5108 # Introduced in Solaris 11.2.
5109 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5110 gcc_cv_ld_compress_debug=3
5111 gcc_cv_ld_compress_debug_option="-z compress-sections"
5113 gcc_cv_ld_compress_debug=0
5117 # Assume linkers other than GNU ld don't support compessed debug
5119 gcc_cv_ld_compress_debug=0
5124 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5125 [Define to the level of your linker's compressed debug section support.])
5126 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5127 [Define to the linker option to enable compressed debug sections.])
5128 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5134 AC_CACHE_CHECK(linker --as-needed support,
5135 gcc_cv_ld_as_needed,
5136 [gcc_cv_ld_as_needed=no
5137 gcc_cv_ld_as_needed_option='--as-needed'
5138 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5139 if test $in_tree_ld = yes ; then
5140 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5141 && test $in_tree_ld_is_elf = yes; then
5142 gcc_cv_ld_as_needed=yes
5144 elif test x$gcc_cv_ld != x; then
5145 # Check if linker supports --as-needed and --no-as-needed options
5146 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5147 gcc_cv_ld_as_needed=yes
5150 # Solaris 2 ld always supports -z ignore/-z record.
5152 gcc_cv_ld_as_needed=yes
5153 gcc_cv_ld_as_needed_option="-z ignore"
5154 gcc_cv_ld_no_as_needed_option="-z record"
5159 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5160 # dl_iterate_phdr, i.e. since Solaris 11.
5162 *-*-solaris2.1[[1-9]]*)
5164 i?86-*-* | x86_64-*-*)
5165 if echo "$ld_ver" | grep GNU > /dev/null; then
5166 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5167 gcc_cv_ld_as_needed=no
5173 gcc_cv_ld_as_needed=no
5177 if test x"$gcc_cv_ld_as_needed" = xyes; then
5178 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5179 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5180 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5181 [Define to the linker option to ignore unused dependencies.])
5182 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5183 [Define to the linker option to keep unused dependencies.])
5186 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5187 saved_LDFLAGS="$LDFLAGS"
5188 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5189 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5190 AC_LINK_IFELSE([int main(void) {return 0;}],
5191 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5193 LDFLAGS="$saved_LDFLAGS"
5194 if test "x$gcc_cv_ld_clearcap" = xyes; then
5195 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5196 [Define if the linker supports clearing hardware capabilities via mapfile.])
5197 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5199 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5201 case "$target:$tm_file" in
5202 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5205 emul_name="-melf64lppc"
5208 emul_name="-melf64ppc"
5211 emul_name="-melf64ppc_fbsd"
5214 AC_CACHE_CHECK(linker support for omitting dot symbols,
5215 gcc_cv_ld_no_dot_syms,
5216 [gcc_cv_ld_no_dot_syms=no
5217 if test x"$ld_is_gold" = xyes; then
5218 gcc_cv_ld_no_dot_syms=yes
5219 elif test $in_tree_ld = yes ; then
5220 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5221 gcc_cv_ld_no_dot_syms=yes
5223 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5224 cat > conftest1.s <<EOF
5228 cat > conftest2.s <<EOF
5229 .section ".opd","aw"
5234 .quad .LEfoo,.TOC.@tocbase,0
5240 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5241 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5242 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5243 gcc_cv_ld_no_dot_syms=yes
5245 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5248 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5249 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5250 [Define if your PowerPC64 linker only needs function descriptor syms.])
5253 AC_CACHE_CHECK(linker large toc support,
5254 gcc_cv_ld_large_toc,
5255 [gcc_cv_ld_large_toc=no
5256 if test x"$ld_is_gold" = xyes; then
5257 gcc_cv_ld_large_toc=yes
5258 elif test $in_tree_ld = yes ; then
5259 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5260 gcc_cv_ld_large_toc=yes
5262 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5263 cat > conftest.s <<EOF
5264 .section ".tbss","awT",@nobits
5270 addis 9,13,ie0@got@tprel@ha
5271 ld 9,ie0@got@tprel@l(9)
5273 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5274 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5275 gcc_cv_ld_large_toc=yes
5277 rm -f conftest conftest.o conftest.s
5280 if test x"$gcc_cv_ld_large_toc" = xyes; then
5281 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5282 [Define if your PowerPC64 linker supports a large TOC.])
5285 AC_CACHE_CHECK(linker toc pointer alignment,
5286 gcc_cv_ld_toc_align,
5287 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5288 cat > conftest.s <<EOF
5293 .section .data.rel.ro,"aw",@progbits
5298 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5299 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5300 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5302 rm -f conftest conftest.o conftest.s
5305 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5306 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5307 [Define to .TOC. alignment forced by your linker.])
5314 AC_CACHE_CHECK(linker large toc support,
5315 gcc_cv_ld_large_toc,
5316 [gcc_cv_ld_large_toc=no
5317 if test x$gcc_cv_as != x ; then
5318 cat > conftest.s <<EOF
5328 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5329 gcc_cv_ld_large_toc=yes
5331 rm -f conftest conftest.o conftest.s
5334 if test x"$gcc_cv_ld_large_toc" = xyes; then
5335 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5336 [Define if your PowerPC64 linker supports a large TOC.])
5341 AC_CACHE_CHECK(linker --build-id support,
5343 [gcc_cv_ld_buildid=no
5344 if test $in_tree_ld = yes ; then
5345 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5346 "$gcc_cv_gld_minor_version" -ge 18 -o \
5347 "$gcc_cv_gld_major_version" -gt 2 \
5348 && test $in_tree_ld_is_elf = yes; then
5349 gcc_cv_ld_buildid=yes
5351 elif test x$gcc_cv_ld != x; then
5352 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5353 gcc_cv_ld_buildid=yes
5356 if test x"$gcc_cv_ld_buildid" = xyes; then
5357 AC_DEFINE(HAVE_LD_BUILDID, 1,
5358 [Define if your linker supports --build-id.])
5361 AC_ARG_ENABLE(linker-build-id,
5362 [AS_HELP_STRING([--enable-linker-build-id],
5363 [compiler will always pass --build-id to linker])],
5365 enable_linker_build_id=no)
5367 if test x"$enable_linker_build_id" = xyes; then
5368 if test x"$gcc_cv_ld_buildid" = xyes; then
5369 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5370 [Define if gcc should always pass --build-id to linker.])
5372 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5376 # In binutils 2.21, GNU ld gained support for new emulations fully
5377 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5378 AC_CACHE_CHECK(linker *_sol2 emulation support,
5379 gcc_cv_ld_sol2_emulation,
5380 [gcc_cv_ld_sol2_emulation=no
5381 if test $in_tree_ld = yes ; then
5382 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5383 "$gcc_cv_gld_minor_version" -ge 21 -o \
5384 "$gcc_cv_gld_major_version" -gt 2 \
5385 && test $in_tree_ld_is_elf = yes; then
5386 gcc_cv_ld_sol2_emulation=yes
5388 elif test x$gcc_cv_ld != x; then
5389 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5390 grep _sol2 > /dev/null; then
5391 gcc_cv_ld_sol2_emulation=yes
5394 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5395 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5396 [Define if your linker supports the *_sol2 emulations.])
5399 AC_CACHE_CHECK(linker --sysroot support,
5401 [gcc_cv_ld_sysroot=no
5402 if test $in_tree_ld = yes ; then
5403 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5404 gcc_cv_ld_sysroot=yes
5406 elif test x$gcc_cv_ld != x; then
5407 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5408 gcc_cv_ld_sysroot=yes
5411 if test x"$gcc_cv_ld_sysroot" = xyes; then
5412 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5413 [Define if your linker supports --sysroot.])
5418 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5419 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5420 gcc_cv_solaris_crts,
5421 [gcc_cv_solaris_crts=no
5422 if test x$host != x$target; then
5423 if test "x$with_sysroot" = xyes; then
5424 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5426 target_sysroot="${with_sysroot}"
5429 target_libdir="$target_sysroot/usr/lib"
5430 # At the time they were added, gcrt1.o became a symlink for backwards
5431 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5433 i?86-*-solaris2* | x86_64-*-solaris2*)
5434 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5437 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5442 if test x$gcc_cv_solaris_crts = xyes; then
5443 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5444 [Define if the system-provided CRTs are present on Solaris.])
5447 # Test for stack protector support in target C library.
5448 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5449 gcc_cv_libc_provides_ssp,
5450 [gcc_cv_libc_provides_ssp=no
5453 # All versions of musl provide stack protector
5454 gcc_cv_libc_provides_ssp=yes;;
5455 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5456 # glibc 2.4 and later provides __stack_chk_fail and
5457 # either __stack_chk_guard, or TLS access to stack guard canary.
5458 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5459 [if test -f $target_header_dir/features.h \
5460 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5461 $target_header_dir/features.h > /dev/null; then
5462 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5463 $target_header_dir/features.h > /dev/null && \
5464 test -f $target_header_dir/bits/uClibc_config.h && \
5465 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5466 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5467 gcc_cv_libc_provides_ssp=yes
5469 # all versions of Bionic support stack protector
5470 elif test -f $target_header_dir/sys/cdefs.h \
5471 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5472 $target_header_dir/sys/cdefs.h > /dev/null; then
5473 gcc_cv_libc_provides_ssp=yes
5477 # Avoid complicated tests (see
5478 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5479 # simply assert that glibc does provide this, which is true for all
5480 # realistically usable GNU/Hurd configurations.
5481 # All supported versions of musl provide it as well
5482 gcc_cv_libc_provides_ssp=yes;;
5483 *-*-darwin* | *-*-freebsd*)
5484 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5485 [echo "no __stack_chk_fail on this target"])
5487 *) gcc_cv_libc_provides_ssp=no ;;
5490 if test x$gcc_cv_libc_provides_ssp = xyes; then
5491 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5492 [Define if your target C library provides stack protector support])
5495 # Check whether --enable-default-ssp was given.
5496 AC_ARG_ENABLE(default-ssp,
5497 [AS_HELP_STRING([--enable-default-ssp],
5498 [enable Stack Smashing Protection as default])],[
5499 if test x$gcc_cv_libc_provides_ssp = xyes; then
5501 ia64*-*-*) enable_default_ssp=no ;;
5502 *) enable_default_ssp=$enableval ;;
5505 enable_default_ssp=no
5507 enable_default_ssp=no)
5508 if test x$enable_default_ssp = xyes ; then
5509 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5510 [Define if your target supports default stack protector and it is enabled.])
5512 AC_SUBST([enable_default_ssp])
5514 # Test for <sys/sdt.h> on the target.
5515 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5516 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5518 if test -f $target_header_dir/sys/sdt.h; then
5520 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5521 [Define if your target C library provides sys/sdt.h])
5523 AC_MSG_RESULT($have_sys_sdt_h)
5525 # Check if TFmode long double should be used by default or not.
5526 # Some glibc targets used DFmode long double, but with glibc 2.4
5527 # and later they can use TFmode.
5529 powerpc*-*-linux* | \
5533 AC_ARG_WITH(long-double-128,
5534 [AS_HELP_STRING([--with-long-double-128],
5535 [use 128-bit long double by default])],
5536 gcc_cv_target_ldbl128="$with_long_double_128",
5537 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5538 [gcc_cv_target_ldbl128=no
5539 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5540 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5541 && gcc_cv_target_ldbl128=yes
5545 if test x$gcc_cv_target_ldbl128 = xyes; then
5546 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5547 [Define if TFmode long double should be the default])
5550 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
5551 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
5552 gcc_cv_libc_provides_hwcap_in_tcb=no
5555 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
5558 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
5559 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
5560 [Define if your target C Library provides the AT_HWCAP value in the TCB])
5563 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5564 gcc_cv_target_dl_iterate_phdr=unknown
5566 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5567 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5568 # libdl there, both complicating its use and breaking compatibility
5569 # between Solaris 10 updates.
5570 *-*-solaris2.1[[1-9]]*)
5571 # <link.h> needs both a dl_iterate_phdr declaration and support for
5572 # compilation with largefile support.
5573 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5574 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5575 gcc_cv_target_dl_iterate_phdr=yes
5577 gcc_cv_target_dl_iterate_phdr=no
5580 *-*-dragonfly* | *-*-freebsd*)
5581 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5582 gcc_cv_target_dl_iterate_phdr=yes
5584 gcc_cv_target_dl_iterate_phdr=no
5588 gcc_cv_target_dl_iterate_phdr=yes
5591 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5592 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5593 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5594 [Define if your target C library provides the `dl_iterate_phdr' function.])
5596 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5598 # We no longer support different GC mechanisms. Emit an error if
5599 # the user configures with --with-gc.
5601 [AS_HELP_STRING([--with-gc={page,zone}],
5602 [this option is not supported anymore. It used to choose
5603 the garbage collection mechanism to use with the compiler])],
5604 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5607 # Libraries to use on the host. This will normally be set by the top
5608 # level Makefile. Here we simply capture the value for our Makefile.
5609 if test -z "${HOST_LIBS+set}"; then
5614 # Use the system's zlib library.
5617 dnl Very limited version of automake's enable-maintainer-mode
5619 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5620 dnl maintainer-mode is disabled by default
5621 AC_ARG_ENABLE(maintainer-mode,
5622 [AS_HELP_STRING([--enable-maintainer-mode],
5623 [enable make rules and dependencies not useful
5624 (and sometimes confusing) to the casual installer])],
5625 maintainer_mode=$enableval,
5628 AC_MSG_RESULT($maintainer_mode)
5630 if test "$maintainer_mode" = "yes"; then
5637 dnl Whether to prevent multiple front-ends from linking at the same time
5639 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5640 AC_ARG_ENABLE(link-mutex,
5641 [AS_HELP_STRING([--enable-link-mutex],
5642 [avoid linking multiple front-ends at once to avoid thrashing
5643 on the build machine])],
5644 do_link_mutex=$enableval,
5646 AC_MSG_RESULT($do_link_mutex)
5648 if test "$do_link_mutex" = "yes"; then
5653 AC_SUBST(DO_LINK_MUTEX)
5659 # Make empty files to contain the specs and options for each language.
5660 # Then add #include lines to for a compiler that has specs and/or options.
5666 # These (without "all_") are set in each config-lang.in.
5667 # `language' must be a single word so is spelled singularly.
5670 all_outputs='Makefile'
5671 # List of language makefile fragments.
5673 # Additional files for gengtype
5674 all_gtfiles="$target_gtfiles"
5676 # These are the languages that are set in --enable-languages,
5677 # and are available in the GCC tree.
5678 all_selected_languages=
5680 # Add the language fragments.
5681 # Languages are added via two mechanisms. Some information must be
5682 # recorded in makefile variables, these are defined in config-lang.in.
5683 # We accumulate them and plug them into the main Makefile.
5684 # The other mechanism is a set of hooks for each of the main targets
5685 # like `clean', `install', etc.
5687 language_hooks="Make-hooks"
5689 for lang in ${srcdir}/*/config-lang.in
5692 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5694 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5695 if test "x$lang_alias" = x
5697 echo "$lang doesn't set \$language." 1>&2
5700 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5701 subdirs="$subdirs $subdir"
5703 # $gcc_subdir is where the gcc integration files are to be found
5704 # for a language, both for internal compiler purposes (compiler
5705 # sources implementing front-end to GCC tree converters), and for
5706 # build infrastructure purposes (Make-lang.in, etc.)
5708 # This will be <subdir> (relative to $srcdir) if a line like
5709 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5710 # is found in <langdir>/config-lang.in, and will remain <langdir>
5713 # Except for the language alias (fetched above), the regular
5714 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5715 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5716 # only this and the language alias.
5718 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5719 if [ "$gcc_subdir" = "" ]; then
5720 gcc_subdir="$subdir"
5723 case ",$enable_languages," in
5725 all_selected_languages="$all_selected_languages $lang_alias"
5726 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5727 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5739 . ${srcdir}/$gcc_subdir/config-lang.in
5740 if test "x$language" = x
5742 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5747 case ",$enable_languages," in
5750 for i in $subdir_requires; do
5751 test -f "${srcdir}/$i/config-lang.in" && continue
5759 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5760 if test -f $srcdir/$gcc_subdir/lang.opt; then
5761 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5762 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5764 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5765 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5767 all_languages="$all_languages $language"
5768 all_compilers="$all_compilers $compilers"
5769 all_outputs="$all_outputs $outputs"
5770 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5771 case ",$enable_languages," in
5773 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5775 AC_SUBST(enable_lto)
5782 for language in $all_selected_languages
5784 check_languages="$check_languages check-$language"
5787 # We link each language in with a set of hooks, reached indirectly via
5788 # lang.${target}. Only do so for selected languages.
5792 target_list="all.cross start.encap rest.encap tags \
5793 install-common install-man install-info install-pdf install-html dvi \
5794 pdf html uninstall info man srcextra srcman srcinfo \
5795 mostlyclean clean distclean maintainer-clean install-plugin"
5797 for t in $target_list
5800 for lang in $all_selected_languages
5804 echo "lang.$t: $x" >> Make-hooks
5808 # Option include files
5811 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5812 option_includes="option-includes.mk"
5813 AC_SUBST_FILE(option_includes)
5821 echo "dir ." > .gdbinit
5822 echo "dir ${srcdir}" >> .gdbinit
5823 if test x$gdb_needs_out_file_path = xyes
5825 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5827 if test "x$subdirs" != x; then
5830 echo "dir ${srcdir}/$s" >> .gdbinit
5833 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5834 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5836 # Put a breakpoint on __asan_report_error to help with debugging buffer
5839 *-fsanitize=address*)
5840 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5844 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5845 AC_SUBST(gcc_tooldir)
5848 # Find a directory in which to install a shared libgcc.
5850 AC_ARG_ENABLE(version-specific-runtime-libs,
5851 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5852 [specify that runtime libraries should be
5853 installed in a compiler-specific directory])])
5855 # Substitute configuration variables
5858 AC_SUBST(all_compilers)
5859 AC_SUBST(all_gtfiles)
5860 AC_SUBST(all_lang_makefrags)
5861 AC_SUBST(all_languages)
5862 AC_SUBST(all_selected_languages)
5863 AC_SUBST(build_exeext)
5864 AC_SUBST(build_install_headers_dir)
5865 AC_SUBST(build_xm_file_list)
5866 AC_SUBST(build_xm_include_list)
5867 AC_SUBST(build_xm_defines)
5868 AC_SUBST(build_file_translate)
5869 AC_SUBST(check_languages)
5870 AC_SUBST(cpp_install_dir)
5871 AC_SUBST(xmake_file)
5872 AC_SUBST(tmake_file)
5873 AC_SUBST(TM_ENDIAN_CONFIG)
5874 AC_SUBST(TM_MULTILIB_CONFIG)
5875 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5876 AC_SUBST(extra_gcc_objs)
5877 AC_SUBST(user_headers_inc_next_pre)
5878 AC_SUBST(user_headers_inc_next_post)
5879 AC_SUBST(extra_headers_list)
5880 AC_SUBST(extra_objs)
5881 AC_SUBST(extra_programs)
5882 AC_SUBST(float_h_file)
5883 AC_SUBST(gcc_config_arguments)
5884 AC_SUBST(gcc_gxx_include_dir)
5885 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5886 AC_SUBST(host_exeext)
5887 AC_SUBST(host_xm_file_list)
5888 AC_SUBST(host_xm_include_list)
5889 AC_SUBST(host_xm_defines)
5890 AC_SUBST(out_host_hook_obj)
5892 AC_SUBST(lang_opt_files)
5893 AC_SUBST(lang_specs_files)
5894 AC_SUBST(lang_tree_files)
5895 AC_SUBST(local_prefix)
5897 AC_SUBST(objc_boehm_gc)
5899 AC_SUBST(out_object_file)
5900 AC_SUBST(common_out_file)
5901 AC_SUBST(common_out_object_file)
5902 AC_SUBST(tm_file_list)
5903 AC_SUBST(tm_include_list)
5904 AC_SUBST(tm_defines)
5905 AC_SUBST(tm_p_file_list)
5906 AC_SUBST(tm_p_include_list)
5907 AC_SUBST(xm_file_list)
5908 AC_SUBST(xm_include_list)
5909 AC_SUBST(xm_defines)
5910 AC_SUBST(use_gcc_stdint)
5911 AC_SUBST(c_target_objs)
5912 AC_SUBST(cxx_target_objs)
5913 AC_SUBST(fortran_target_objs)
5914 AC_SUBST(target_cpu_default)
5916 AC_SUBST_FILE(language_hooks)
5919 if test x${build} = x${host} ; then
5920 if test x${host} = x${target} ; then
5921 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5923 echo "Links are now set up to build a cross-compiler" 1>&2
5924 echo " from ${host} to ${target}." 1>&2
5927 if test x${host} = x${target} ; then
5928 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5929 echo " for ${target}." 1>&2
5931 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5932 echo " from ${host} to ${target}." 1>&2
5936 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5937 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5939 AC_ARG_VAR(ISLLIBS,[How to link isl])
5940 AC_ARG_VAR(ISLINC,[How to find isl include files])
5941 if test "x${ISLLIBS}" != "x" ; then
5942 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5945 # Check whether isl_options_set_schedule_serialize_sccs is available;
5946 # it's new in isl 0.15.
5947 if test "x${ISLLIBS}" != "x" ; then
5948 saved_CXXFLAGS="$CXXFLAGS"
5949 CXXFLAGS="$CXXFLAGS $ISLINC $GMPINC"
5951 LIBS="$LIBS $ISLLIBS $GMPLIBS"
5953 AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5954 AC_TRY_LINK([#include <isl/schedule.h>],
5955 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5956 [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5957 [ac_has_isl_options_set_schedule_serialize_sccs=no])
5958 AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5961 CXXFLAGS="$saved_CXXFLAGS"
5963 if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5964 AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5965 [Define if isl_options_set_schedule_serialize_sccs exists.])
5970 AC_SUBST(pluginlibs)
5971 AC_SUBST(enable_plugin)
5972 if test x"$enable_plugin" = x"yes"; then
5973 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5977 # Enable --enable-host-shared
5978 AC_ARG_ENABLE(host-shared,
5979 [AS_HELP_STRING([--enable-host-shared],
5980 [build host code as shared libraries])],
5981 [PICFLAG=-fPIC], [PICFLAG=])
5982 AC_SUBST(enable_host_shared)
5986 AC_ARG_ENABLE(libquadmath-support,
5987 [AS_HELP_STRING([--disable-libquadmath-support],
5988 [disable libquadmath support for Fortran])],
5989 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5990 ENABLE_LIBQUADMATH_SUPPORT=yes)
5991 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5992 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5993 [Define to 1 to enable libquadmath support])
5997 # Specify what hash style to use by default.
5998 AC_ARG_WITH([linker-hash-style],
5999 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6000 [specify the linker hash style])],
6001 [case x"$withval" in
6003 LINKER_HASH_STYLE=sysv
6006 LINKER_HASH_STYLE=gnu
6009 LINKER_HASH_STYLE=both
6012 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6015 [LINKER_HASH_STYLE=''])
6016 if test x"${LINKER_HASH_STYLE}" != x; then
6017 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6018 [The linker hash style])
6021 # Specify what should be the default of -fdiagnostics-color option.
6022 AC_ARG_WITH([diagnostics-color],
6023 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6024 [specify the default of -fdiagnostics-color option
6025 auto-if-env stands for -fdiagnostics-color=auto if
6026 GCC_COLOR environment variable is present and
6027 -fdiagnostics-color=never otherwise])],
6028 [case x"$withval" in
6030 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6033 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6036 DIAGNOSTICS_COLOR_DEFAULT=-1
6039 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6042 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6045 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6046 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6047 [The default for -fdiagnostics-color option])
6049 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6050 # of jit/jit-playback.c.
6051 cat > gcc-driver-name.h <<EOF
6052 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6055 # Check whether --enable-default-pie was given.
6056 AC_ARG_ENABLE(default-pie,
6057 [AS_HELP_STRING([--enable-default-pie],
6058 [enable Position Independent Executable as default])],
6059 enable_default_pie=$enableval,
6060 enable_default_pie=no)
6061 if test x$enable_default_pie = xyes ; then
6062 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6063 [Define if your target supports default PIE and it is enabled.])
6065 AC_SUBST([enable_default_pie])
6067 # Check if -fno-PIE works.
6068 AC_CACHE_CHECK([for -fno-PIE option],
6070 [saved_CXXFLAGS="$CXXFLAGS"
6071 CXXFLAGS="$CXXFLAGS -fno-PIE"
6072 AC_COMPILE_IFELSE([int main(void) {return 0;}],
6073 [gcc_cv_c_no_fpie=yes],
6074 [gcc_cv_c_no_fpie=no])
6075 CXXFLAGS="$saved_CXXFLAGS"])
6076 if test "$gcc_cv_c_no_fpie" = "yes"; then
6077 NO_PIE_CFLAGS="-fno-PIE"
6079 AC_SUBST([NO_PIE_CFLAGS])
6081 # Check if -no-pie works.
6082 AC_CACHE_CHECK([for -no-pie option],
6084 [saved_LDFLAGS="$LDFLAGS"
6085 LDFLAGS="$LDFLAGS -no-pie"
6086 AC_LINK_IFELSE([int main(void) {return 0;}],
6087 [gcc_cv_no_pie=yes],
6089 LDFLAGS="$saved_LDFLAGS"])
6090 if test "$gcc_cv_no_pie" = "yes"; then
6091 NO_PIE_FLAG="-no-pie"
6093 AC_SUBST([NO_PIE_FLAG])
6095 # Check linker supports '-z bndplt'
6096 ld_bndplt_support=no
6097 AC_MSG_CHECKING(linker -z bndplt option)
6098 if test x"$ld_is_gold" = xno; then
6099 if test $in_tree_ld = yes ; then
6100 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6101 ld_bndplt_support=yes
6103 elif test x$gcc_cv_ld != x; then
6104 # Check if linker supports -a bndplt option
6105 if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6106 ld_bndplt_support=yes
6110 if test x"$ld_bndplt_support" = xyes; then
6111 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6112 [Define if your linker supports -z bndplt])
6114 AC_MSG_RESULT($ld_bndplt_support)
6116 # Configure the subdirectories
6117 # AC_CONFIG_SUBDIRS($subdirs)
6119 # Create the Makefile
6120 # and configure language subdirectories
6121 AC_CONFIG_FILES($all_outputs)
6123 AC_CONFIG_COMMANDS([default],
6125 case ${CONFIG_HEADERS} in
6126 *auto-host.h:config.in*)
6129 # Make sure all the subdirs exist.
6130 for d in $subdirs doc build common c-family
6132 test -d $d || mkdir $d
6135 [subdirs='$subdirs'])