2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2019 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 # --------------------------------
27 AC_CONFIG_SRCDIR(tree.c)
28 AC_CONFIG_HEADER(auto-host.h:config.in)
30 gcc_version=`cat $srcdir/BASE-VER`
32 # Determine the host, build, and target systems
37 # Determine the noncanonical host name, for Ada.
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Used for constructing correct paths for offload compilers.
44 real_target_noncanonical=${target_noncanonical}
47 # Determine the target- and build-specific subdirectories
50 # Set program_transform_name
53 # Check for bogus environment variables.
54 # Test if LIBRARY_PATH contains the notation for the current directory
55 # since this would lead to problems installing/building glibc.
56 # LIBRARY_PATH contains the current directory if one of the following
58 # - one of the terminals (":" and ";") is the first or last sign
59 # - two terminals occur directly after each other
60 # - the path contains an element with a dot in it
61 AC_MSG_CHECKING(LIBRARY_PATH variable)
63 case ${LIBRARY_PATH} in
64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
65 library_path_setting="contains current directory"
68 library_path_setting="ok"
72 AC_MSG_RESULT($library_path_setting)
73 if test "$library_path_setting" != "ok"; then
75 *** LIBRARY_PATH shouldn't contain the current directory when
76 *** building gcc. Please change the environment variable
77 *** and run configure again.])
80 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
81 # since this would lead to problems installing/building glibc.
82 # GCC_EXEC_PREFIX contains the current directory if one of the following
84 # - one of the terminals (":" and ";") is the first or last sign
85 # - two terminals occur directly after each other
86 # - the path contains an element with a dot in it
87 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
89 case ${GCC_EXEC_PREFIX} in
90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
91 gcc_exec_prefix_setting="contains current directory"
94 gcc_exec_prefix_setting="ok"
98 AC_MSG_RESULT($gcc_exec_prefix_setting)
99 if test "$gcc_exec_prefix_setting" != "ok"; then
101 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
102 *** building gcc. Please change the environment variable
103 *** and run configure again.])
110 # Specify the local prefix
112 AC_ARG_WITH(local-prefix,
113 [AS_HELP_STRING([--with-local-prefix=DIR],
114 [specifies directory to put local include])],
115 [case "${withval}" in
116 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
118 *) local_prefix=$with_local_prefix ;;
121 # Default local prefix if it is empty
122 if test x$local_prefix = x; then
123 local_prefix=/usr/local
126 AC_ARG_WITH([native-system-header-dir],
127 [ --with-native-system-header-dir=dir
128 use dir as the directory to look for standard
129 system header files in. Defaults to /usr/include.],
131 case ${with_native_system_header_dir} in
132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
133 /* | [[A-Za-z]]:[[\\/]]*) ;;
134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
136 configured_native_system_header_dir="${withval}"
137 ], [configured_native_system_header_dir=])
139 AC_ARG_WITH(build-sysroot,
140 [AS_HELP_STRING([--with-build-sysroot=sysroot],
141 [use sysroot as the system root during the build])],
142 [if test x"$withval" != x ; then
143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
145 [SYSROOT_CFLAGS_FOR_TARGET=])
146 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
148 if test "x$prefix" = xNONE; then
149 test_prefix=/usr/local
153 if test "x$exec_prefix" = xNONE; then
154 test_exec_prefix=$test_prefix
156 test_exec_prefix=$exec_prefix
160 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
161 [search for usr/lib, usr/include, et al, within DIR])],
163 case ${with_sysroot} in
165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
167 case ${with_sysroot} in
168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
175 case ${TARGET_SYSTEM_ROOT} in
176 "${test_prefix}"|"${test_prefix}/"*|\
177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
178 '${prefix}'|'${prefix}/'*|\
179 '${exec_prefix}'|'${exec_prefix}/'*)
180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
181 TARGET_SYSTEM_ROOT_DEFINE="$t"
186 TARGET_SYSTEM_ROOT_DEFINE=
187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
189 AC_SUBST(TARGET_SYSTEM_ROOT)
190 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
191 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
193 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
194 # passed in by the toplevel make and thus we'd get different behavior
195 # depending on where we built the sources.
197 # Specify the g++ header file directory
198 AC_ARG_WITH(gxx-include-dir,
199 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
200 [specifies directory to put g++ header files])],
201 [case "${withval}" in
202 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
204 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
207 # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate
208 # the former in the latter and, upon success, compute gcc_gxx_include_dir as
209 # relative to the sysroot.
210 gcc_gxx_include_dir_add_sysroot=0
212 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
213 if test x${gcc_gxx_include_dir} = x; then
214 if test x${enable_version_specific_runtime_libs} = xyes; then
215 gcc_gxx_include_dir='${libsubdir}/include/c++'
217 libstdcxx_incdir='include/c++/$(version)'
218 if test x$host != x$target; then
219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
223 elif test "${with_sysroot+set}" = set; then
224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
225 if test "${gcc_gxx_without_sysroot}"; then
226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
227 gcc_gxx_include_dir_add_sysroot=1
231 AC_ARG_WITH(cpp_install_dir,
232 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
233 [install the user visible C preprocessor in DIR
234 (relative to PREFIX) as well as PREFIX/bin])],
235 [if test x$withval = xyes; then
236 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
237 elif test x$withval != xno; then
238 cpp_install_dir=$withval
241 # We would like to our source tree to be readonly. However when releases or
242 # pre-releases are generated, the flex/bison generated files as well as the
243 # various formats of manuals need to be included along with the rest of the
244 # sources. Therefore we have --enable-generated-files-in-srcdir to do
247 AC_MSG_CHECKING([whether to place generated files in the source directory])
248 dnl generated-files-in-srcdir is disabled by default
249 AC_ARG_ENABLE(generated-files-in-srcdir,
250 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
251 [put copies of generated files in source dir
252 intended for creating source tarballs for users
253 without texinfo bison or flex])],
254 generated_files_in_srcdir=$enableval,
255 generated_files_in_srcdir=no)
257 AC_MSG_RESULT($generated_files_in_srcdir)
259 if test "$generated_files_in_srcdir" = "yes"; then
266 # -------------------
267 # Find default linker
268 # -------------------
272 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
273 gnu_ld_flag="$with_gnu_ld",
277 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker.
281 # With pre-defined ld
283 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
284 DEFAULT_LINKER="$with_ld")
285 if test x"${DEFAULT_LINKER+set}" = x"set"; then
286 if test ! -x "$DEFAULT_LINKER"; then
287 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
288 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
290 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then
293 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
294 [Define to enable the use of a default linker.])
297 AC_MSG_CHECKING([whether a default linker was specified])
298 if test x"${DEFAULT_LINKER+set}" = x"set"; then
299 if test x"$gnu_ld_flag" = x"no"; then
300 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
302 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
308 # With demangler in GNU ld
309 AC_ARG_WITH(demangler-in-ld,
310 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
311 demangler_in_ld="$with_demangler_in_ld",
314 # ----------------------
315 # Find default assembler
316 # ----------------------
320 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
321 gas_flag="$with_gnu_as",
325 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
326 DEFAULT_ASSEMBLER="$with_as")
327 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
328 if test ! -x "$DEFAULT_ASSEMBLER"; then
329 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
330 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
333 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
334 [Define to enable the use of a default assembler.])
337 AC_MSG_CHECKING([whether a default assembler was specified])
338 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
339 if test x"$gas_flag" = x"no"; then
340 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
342 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
352 # If a non-executable a.out is present (e.g. created by GNU as above even if
353 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
354 # file, even when creating an executable, so an execution test fails.
355 # Remove possible default executable files to avoid this.
357 # FIXME: This really belongs into AC_PROG_CC and can be removed once
358 # Autoconf includes it.
359 rm -f a.out a.exe b.out
361 # Find the native compiler
364 ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat])
366 # Do configure tests with the C++ compiler, since that's what we build with.
369 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
370 # optimizations to be activated explicitly by the toplevel.
373 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
374 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
379 # Determine PICFLAG for target gnatlib.
380 GCC_PICFLAG_FOR_TARGET
381 AC_SUBST(PICFLAG_FOR_TARGET)
383 # -------------------------
384 # Check C compiler features
385 # -------------------------
387 AC_USE_SYSTEM_EXTENSIONS
393 # sizeof(char) is 1 by definition.
394 AC_CHECK_SIZEOF(void *)
395 AC_CHECK_SIZEOF(short)
397 AC_CHECK_SIZEOF(long)
398 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
400 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
401 AC_MSG_ERROR([uint64_t or int64_t not found])
404 # check what underlying integer type int64_t uses
405 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
406 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
410 template <typename T> struct X { };
412 struct X<long> { typedef long t; };
413 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
414 if test "$ac_cv_int64_t_type" = "long"; then
415 AC_DEFINE(INT64_T_IS_LONG, 1,
416 [Define if int64_t uses long as underlying type.])
418 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
422 template <typename T> struct X { };
424 struct X<long long> { typedef long long t; };
425 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
428 AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [
429 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
431 ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])])
432 if test $ac_cv_std_swap_in_utility = yes; then
433 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1,
434 [Define if <utility> defines std::swap.])
437 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
438 # If the host compiler is affected by the bug, and we build with optimization
439 # enabled (which happens e.g. when cross-compiling), the pool allocator may
440 # get miscompiled. Use -fno-strict-aliasing to work around this problem.
441 # Since there is no reliable feature check for the presence of this bug,
442 # we simply use a GCC version number check. (This should never trigger for
443 # stages 2 or 3 of a native bootstrap.)
445 if test "$GCC" = yes; then
446 saved_CXXFLAGS="$CXXFLAGS"
448 # The following test compilation will succeed if and only if $CXX accepts
449 # -fno-strict-aliasing *and* is older than GCC 4.3.
450 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
451 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
452 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
453 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
454 #error compiler not affected by placement new aliasing bug
457 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
458 [AC_MSG_RESULT([no])])
460 CXXFLAGS="$saved_CXXFLAGS"
462 AC_SUBST(aliasing_flags)
466 # ---------------------
467 # Warnings and checking
468 # ---------------------
470 # Check $CC warning features (if it's GCC).
471 # We want to use -pedantic, but we don't want warnings about
475 # * C++11 narrowing conversions in { }
476 # So, we only use -pedantic if we can disable those warnings.
478 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
479 AC_ARG_ENABLE(build-format-warnings,
480 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
481 [],[enable_build_format_warnings=yes])
482 AS_IF([test $enable_build_format_warnings = no],
483 [wf_opt=-Wno-format],[wf_opt=])
484 ACX_PROG_CXX_WARNING_OPTS(
485 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
486 [-Wcast-qual $wf_opt])), [loose_warn])
487 ACX_PROG_CC_WARNING_OPTS(
488 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
490 ACX_PROG_CXX_WARNING_OPTS(
491 m4_quote(m4_do([-Wmissing-format-attribute ],
492 [-Woverloaded-virtual])), [strict_warn])
493 ACX_PROG_CC_WARNING_OPTS(
494 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
495 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
496 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
497 [-Wno-overlength-strings])), [strict_warn])
498 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
500 # The above macros do nothing if the compiler is not GCC. However, the
501 # Makefile has more goo to add other flags, so these variables are used
502 # to enable warnings only for GCC.
505 if test "x$GCC" = "xyes"; then
506 warn_cflags='$(GCC_WARN_CFLAGS)'
507 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
509 AC_SUBST(warn_cflags)
510 AC_SUBST(warn_cxxflags)
512 # Disable exceptions and RTTI if building with g++
513 ACX_PROG_CC_WARNING_OPTS(
514 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
517 # Enable expensive internal checks
519 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
523 AC_ARG_ENABLE(checking,
524 [AS_HELP_STRING([[--enable-checking[=LIST]]],
525 [enable expensive run-time checks. With LIST,
526 enable only specific categories of checks.
527 Categories are: yes,no,all,none,release.
528 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc,
529 rtlflag,rtl,runtime,tree,valgrind,types])],
530 [ac_checking_flags="${enableval}"],[
531 # Determine the default checks.
532 if test x$is_release = x ; then
533 ac_checking_flags=yes,extra
535 ac_checking_flags=release
537 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
538 for check in release $ac_checking_flags
541 # these set all the flags to specific states
542 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
543 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ;
544 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
545 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
546 ac_tree_checking=1 ; ac_valgrind_checking= ;
547 ac_types_checking=1 ;;
548 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
549 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
550 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
551 ac_rtlflag_checking= ; ac_runtime_checking= ;
552 ac_tree_checking= ; ac_valgrind_checking= ;
553 ac_types_checking= ;;
554 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
555 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ;
556 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
557 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
558 ac_tree_checking=1 ; ac_valgrind_checking= ;
559 ac_types_checking=1 ;;
560 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
561 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ;
562 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
563 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
564 ac_tree_checking= ; ac_valgrind_checking= ;
565 ac_types_checking= ;;
566 # these enable particular checks
567 assert) ac_assert_checking=1 ;;
568 df) ac_df_checking=1 ;;
569 extra) ac_extra_checking=1 ;;
570 fold) ac_fold_checking=1 ;;
571 gc) ac_gc_checking=1 ;;
572 gcac) ac_gc_always_collect=1 ;;
573 gimple) ac_gimple_checking=1 ;;
574 misc) ac_checking=1 ;;
575 rtl) ac_rtl_checking=1 ;;
576 rtlflag) ac_rtlflag_checking=1 ;;
577 runtime) ac_runtime_checking=1 ;;
578 tree) ac_tree_checking=1 ;;
579 types) ac_types_checking=1 ;;
580 valgrind) ac_valgrind_checking=1 ;;
581 *) AC_MSG_ERROR(unknown check category $check) ;;
587 if test x$ac_checking != x ; then
588 AC_DEFINE(CHECKING_P, 1,
589 [Define to 0/1 if you want more run-time sanity checks. This one gets a grab
590 bag of miscellaneous but relatively cheap checks.])
591 nocommon_flag=-fno-common
593 AC_DEFINE(CHECKING_P, 0)
595 AC_SUBST(nocommon_flag)
596 if test x$ac_extra_checking != x ; then
597 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1,
598 [Define to 0/1 if you want extra run-time checking that might affect code
601 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0)
603 if test x$ac_df_checking != x ; then
604 AC_DEFINE(ENABLE_DF_CHECKING, 1,
605 [Define if you want more run-time sanity checks for dataflow.])
607 if test x$ac_assert_checking != x ; then
608 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
609 [Define if you want assertions enabled. This is a cheap check.])
611 if test x$ac_gimple_checking != x ; then
612 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
613 [Define if you want operations on GIMPLE (the basic data structure of
614 the high-level optimizers) to be checked for dynamic type safety at
615 runtime. This is moderately expensive.])
617 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
618 if test x$ac_runtime_checking != x ; then
619 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
620 [Define if you want runtime assertions enabled. This is a cheap check.])
622 if test x$ac_tree_checking != x ; then
623 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
624 [Define if you want all operations on trees (the basic data
625 structure of the front ends) to be checked for dynamic type safety
626 at runtime. This is moderately expensive.
630 if test x$ac_types_checking != x ; then
631 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
632 [Define if you want all gimple types to be verified after gimplifiation.
636 AC_SUBST(TREECHECKING)
637 if test x$ac_rtl_checking != x ; then
638 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
639 [Define if you want all operations on RTL (the basic data structure
640 of the optimizer and back end) to be checked for dynamic type safety
641 at runtime. This is quite expensive.])
643 if test x$ac_rtlflag_checking != x ; then
644 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
645 [Define if you want RTL flag accesses to be checked against the RTL
646 codes that are supported for each access macro. This is relatively
649 if test x$ac_gc_checking != x ; then
650 AC_DEFINE(ENABLE_GC_CHECKING, 1,
651 [Define if you want the garbage collector to do object poisoning and
652 other memory allocation checks. This is quite expensive.])
654 if test x$ac_gc_always_collect != x ; then
655 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
656 [Define if you want the garbage collector to operate in maximally
657 paranoid mode, validating the entire heap and collecting garbage at
658 every opportunity. This is extremely expensive.])
660 if test x$ac_fold_checking != x ; then
661 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
662 [Define if you want fold checked that it never destructs its argument.
663 This is quite expensive.])
665 valgrind_path_defines=
668 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
669 dnl # an if statement. This was the source of very frustrating bugs
670 dnl # in converting to autoconf 2.5x!
671 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
673 # It is certainly possible that there's valgrind but no valgrind.h.
674 # GCC relies on making annotations so we must have both.
675 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
676 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
677 [[#include <valgrind/memcheck.h>
678 #ifndef VALGRIND_DISCARD
679 #error VALGRIND_DISCARD not defined
681 [gcc_cv_header_valgrind_memcheck_h=yes],
682 [gcc_cv_header_valgrind_memcheck_h=no])
683 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
684 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
685 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
686 [[#include <memcheck.h>
687 #ifndef VALGRIND_DISCARD
688 #error VALGRIND_DISCARD not defined
690 [gcc_cv_header_memcheck_h=yes],
691 [gcc_cv_header_memcheck_h=no])
692 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
693 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
694 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
695 [Define if valgrind's valgrind/memcheck.h header is installed.])
697 if test $gcc_cv_header_memcheck_h = yes; then
698 AC_DEFINE(HAVE_MEMCHECK_H, 1,
699 [Define if valgrind's memcheck.h header is installed.])
702 if test x$ac_valgrind_checking != x ; then
703 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
704 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
705 if test "x$valgrind_path" = "x" \
706 || (test $have_valgrind_h = no \
707 && test $gcc_cv_header_memcheck_h = no \
708 && test $gcc_cv_header_valgrind_memcheck_h = no); then
709 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
711 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
712 valgrind_command="$valgrind_path -q"
713 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
714 [Define if you want to run subprograms and generated programs
715 through valgrind (a memory checker). This is extremely expensive.])
717 AC_SUBST(valgrind_path_defines)
718 AC_SUBST(valgrind_command)
720 # Enable code coverage collection
721 AC_ARG_ENABLE(coverage,
722 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
723 [enable compiler's code coverage collection.
724 Use to measure compiler performance and locate
725 unused parts of the compiler. With LEVEL, specify
726 optimization. Values are opt, noopt,
728 [case "${enableval}" in
730 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions"
733 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions"
736 # a.k.a. --disable-coverage
740 AC_MSG_ERROR(unknown coverage setting $enableval)
744 AC_SUBST(coverage_flags)
746 AC_ARG_ENABLE(gather-detailed-mem-stats,
747 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
748 [enable detailed memory allocation stats gathering])], [],
749 [enable_gather_detailed_mem_stats=no])
750 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
751 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
752 [Define to enable detailed memory allocation stats gathering.])
754 AC_ARG_ENABLE(valgrind-annotations,
755 [AS_HELP_STRING([--enable-valgrind-annotations],
756 [enable valgrind runtime interaction])], [],
757 [enable_valgrind_annotations=no])
758 if test x$enable_valgrind_annotations != xno \
759 || test x$ac_valgrind_checking != x; then
760 if (test $have_valgrind_h = no \
761 && test $gcc_cv_header_memcheck_h = no \
762 && test $gcc_cv_header_valgrind_memcheck_h = no); then
763 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
765 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
766 [Define to get calls to the valgrind runtime enabled.])
769 # -------------------------------
770 # Miscenalleous configure options
771 # -------------------------------
775 [AS_HELP_STRING([--with-stabs],
776 [arrange to use stabs instead of host debug format])],
780 # Determine whether or not multilibs are enabled.
781 AC_ARG_ENABLE(multilib,
782 [AS_HELP_STRING([--enable-multilib],
783 [enable library support for multiple ABIs])],
784 [], [enable_multilib=yes])
785 AC_SUBST(enable_multilib)
787 # Determine whether or not multiarch is enabled.
788 AC_ARG_ENABLE(multiarch,
789 [AS_HELP_STRING([--enable-multiarch],
790 [enable support for multiarch paths])],
791 [case "${enableval}" in
792 yes|no|auto) enable_multiarch=$enableval;;
793 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
794 esac], [enable_multiarch=auto])
795 if test x${enable_multiarch} = xauto; then
796 if test x${with_native_system_header_dir} != x; then
797 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
800 if test x$host != x$target && test "x$with_sysroot" = x; then
801 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
805 AC_MSG_CHECKING(for multiarch configuration)
806 AC_SUBST(enable_multiarch)
807 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
809 # needed for setting the multiarch name for soft-float/hard-float ABIs
813 # default stack clash protection guard size as power of twos in bytes.
814 # Please keep these in sync with params.def.
818 # Keep the default value when the option is not used to 0, this allows us to
819 # distinguish between the cases where the user specifially set a value via
820 # configure and when the normal default value is used.
821 AC_ARG_WITH(stack-clash-protection-guard-size,
822 [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size],
823 [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])],
824 [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0])
825 if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \
826 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \
827 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then
828 AC_MSG_ERROR(m4_normalize([
829 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \
830 Must be between $stk_clash_min and $stk_clash_max.]))
833 AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE,
834 [Define to larger than zero set the default stack clash protector size.])
836 # Enable __cxa_atexit for C++.
837 AC_ARG_ENABLE(__cxa_atexit,
838 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
841 # Enable C extension for decimal float if target supports it.
842 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
844 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
845 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
846 [Define to 1 to enable decimal float extension to C.])
848 # Use default_decimal_float for dependency.
849 enable_decimal_float=$default_decimal_float
851 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
852 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
853 [Define to 1 to specify that we are using the BID decimal floating
854 point format instead of DPD])
856 # Enable C extension for fixed-point arithmetic.
857 AC_ARG_ENABLE(fixed-point,
858 [AS_HELP_STRING([--enable-fixed-point],
859 [enable fixed-point arithmetic extension to C])],
864 enable_fixed_point=yes
868 enable_fixed_point=yes
871 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
872 enable_fixed_point=no
876 AC_SUBST(enable_fixed_point)
878 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
879 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
880 [Define to 1 to enable fixed-point arithmetic extension to C.])
883 # Pass with no value to take the default
884 # Pass with a value to specify a thread package
885 AC_ARG_ENABLE(threads,
886 [AS_HELP_STRING([[--enable-threads[=LIB]]],
887 [enable thread usage for target GCC,
888 using LIB thread package])],,
892 [AS_HELP_STRING([--enable-tls],
893 [enable or disable generation of tls code
894 overriding the assembler check for tls support])],
898 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
899 Valid choices are 'yes' and 'no'.]) ;;
903 AC_ARG_ENABLE(vtable-verify,
904 [AS_HELP_STRING([--enable-vtable-verify],
905 [enable vtable verification feature])],,
906 [enable_vtable_verify=no])
907 vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi`
908 AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify,
909 [Define 0/1 if vtable verification feature is enabled.])
911 AC_ARG_ENABLE(objc-gc,
912 [AS_HELP_STRING([--enable-objc-gc],
913 [enable the use of Boehm's garbage collector with
914 the GNU Objective-C runtime])],
915 if test x$enable_objc_gc = xno; then
923 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
924 dwarf2="$with_dwarf2",
927 AC_ARG_ENABLE(shared,
928 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
930 case $enable_shared in
934 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
935 for pkg in $enableval; do
936 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
943 ], [enable_shared=yes])
944 AC_SUBST(enable_shared)
947 [ --disable-gcov don't provide libgcov and related host tools],
948 [], [enable_gcov=yes])
949 AC_SUBST(enable_gcov)
952 [AS_HELP_STRING([--with-specs=SPECS],
953 [add SPECS to driver command-line processing])],
954 [CONFIGURE_SPECS=$withval],
957 AC_SUBST(CONFIGURE_SPECS)
959 ACX_PKGVERSION([GCC])
960 ACX_BUGURL([https://gcc.gnu.org/bugs/])
962 # Sanity check enable_languages in case someone does not run the toplevel
963 # configure # script.
964 AC_ARG_ENABLE(languages,
965 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
966 [case ,${enable_languages}, in
968 # go safe -- we cannot be much sure without the toplevel
970 # analysis of which target libs are present and usable
974 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
979 enable_languages=c,${enable_languages}
982 [enable_languages=c])
984 if test x"$enable_as_accelerator_for" != x; then
985 AC_DEFINE(ACCEL_COMPILER, 1,
986 [Define if this compiler should be built as the offload target compiler.])
987 enable_as_accelerator=yes
990 # In this case we expect offload compiler to be built as native, so we
991 # need to rename the driver to avoid clashes with host's drivers.
992 program_transform_name="s&^&${target}-&" ;;
994 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
995 program_transform_name=`echo $program_transform_name | sed $sedscript`
996 accel_dir_suffix=/accel/${target_noncanonical}
997 real_target_noncanonical=${enable_as_accelerator_for}
999 AC_SUBST(enable_as_accelerator)
1000 AC_SUBST(real_target_noncanonical)
1001 AC_SUBST(accel_dir_suffix)
1003 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
1004 tgt=`echo $tgt | sed 's/=.*//'`
1006 if echo "$tgt" | grep "^hsa" > /dev/null ; then
1012 if test x"$offload_targets" = x; then
1013 offload_targets=$tgt
1015 offload_targets="$offload_targets,$tgt"
1018 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
1019 [Define to offload targets, separated by commas.])
1020 if test x"$enable_offloading" != x; then
1021 AC_DEFINE(ENABLE_OFFLOADING, 1,
1022 [Define this to enable support for offloading.])
1024 AC_DEFINE(ENABLE_OFFLOADING, 0,
1025 [Define this to enable support for offloading.])
1028 if test x"$enable_hsa" = x1 ; then
1029 AC_DEFINE(ENABLE_HSA, 1,
1030 [Define this to enable support for generating HSAIL.])
1033 AC_ARG_WITH(multilib-list,
1034 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
1036 with_multilib_list=default)
1038 # -------------------------
1039 # Checks for other programs
1040 # -------------------------
1044 # Find some useful tools
1046 # We need awk to create options.c and options.h.
1047 # Bail out if it's missing.
1049 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1056 AC_SUBST(ranlib_flags)
1060 # See if cmp has --ignore-initial.
1061 gcc_AC_PROG_CMP_IGNORE_INITIAL
1063 # See if we have the mktemp command.
1064 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1066 # See if makeinfo has been installed and is modern enough
1067 # that we can use it.
1068 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1069 [GNU texinfo.* \([0-9][0-9.]*\)],
1070 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1071 if test $gcc_cv_prog_makeinfo_modern = no; then
1073 *** Makeinfo is missing or too old.
1074 *** Info documentation will not be built.])
1079 AC_SUBST(BUILD_INFO)
1081 # Is pod2man recent enough to regenerate manpages?
1082 AC_MSG_CHECKING([for recent Pod::Man])
1083 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1085 GENERATED_MANPAGES=generated-manpages
1090 AC_SUBST(GENERATED_MANPAGES)
1092 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1095 dnl Don't use AC_PROG_LEX; we insist on flex.
1096 dnl LEXLIB is not useful in gcc.
1097 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1100 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1102 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1103 # check for build == host before using them.
1106 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1107 && test -d ../binutils ; then
1108 NM='${objdir}/../binutils/nm-new'
1110 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1114 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1115 && test -d ../binutils ; then
1116 AR='${objdir}/../binutils/ar'
1118 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1121 # The jit documentation looks better if built with sphinx, but can be
1122 # built with texinfo if sphinx is not available.
1123 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1124 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1126 # --------------------
1127 # Checks for C headers
1128 # --------------------
1130 # Need to reject headers which give warnings, so that the -Werror bootstrap
1131 # works later. *sigh* This needs to come before all header checks.
1138 AC_HEADER_TIOCGWINSZ
1139 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1140 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1141 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1142 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1144 # Check for thread headers.
1145 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1146 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1148 # These tests can't be done till we know if we have limits.h.
1152 # ----------------------
1153 # Checks for C++ headers
1154 # ----------------------
1156 dnl Autoconf will give an error in the configure script if there is no
1157 dnl C++ preprocessor. Hack to prevent that.
1158 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1160 m4_popdef([AC_MSG_ERROR])[]dnl
1162 AC_CHECK_HEADERS(unordered_map)
1163 AC_CHECK_HEADERS(tr1/unordered_map)
1164 AC_CHECK_HEADERS(ext/hash_map)
1167 # Dependency checking.
1171 AC_CONFIG_COMMANDS([gccdepdir],[
1172 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1173 for lang in $subdirs c-family common
1175 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1176 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1178 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1185 # These libraries may be used by collect2.
1186 # We may need a special search path to get them linked.
1187 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1189 for libs in '' -lld -lmld \
1190 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1191 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1194 AC_TRY_LINK_FUNC(ldopen,
1195 [gcc_cv_collect2_libs="$libs"; break])
1198 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1199 case $gcc_cv_collect2_libs in
1201 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1203 AC_SUBST(COLLECT2_LIBS)
1205 # When building Ada code on Alpha, we need exc_resume which is usually in
1206 # -lexc. So test for it.
1209 AC_SEARCH_LIBS(exc_resume, exc)
1212 AC_SUBST(GNAT_LIBEXC)
1214 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1217 AC_SEARCH_LIBS(kstat_open, kstat)
1218 EXTRA_GCC_LIBS="$LIBS"
1220 AC_SUBST(EXTRA_GCC_LIBS)
1222 # Some systems put ldexp and frexp in libm instead of libc; assume
1223 # they're both in the same place. jcf-dump needs them.
1226 AC_SEARCH_LIBS(ldexp, m)
1231 # Use <inttypes.h> only if it exists,
1232 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1234 AC_MSG_CHECKING(for inttypes.h)
1235 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1236 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1237 [[#define __STDC_FORMAT_MACROS
1238 #include <sys/types.h>
1239 #include <inttypes.h>]],
1244 [gcc_cv_header_inttypes_h=yes],
1245 [gcc_cv_header_inttypes_h=no])])
1246 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1247 if test $gcc_cv_header_inttypes_h = yes; then
1248 AC_DEFINE(HAVE_INTTYPES_H, 1,
1249 [Define if you have a working <inttypes.h> header file.])
1252 dnl Disabled until we have a complete test for buggy enum bitfields.
1253 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1255 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1256 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1257 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1258 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1259 putchar_unlocked putc_unlocked)
1260 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1261 popen sysconf strsignal getrusage nl_langinfo \
1262 gettimeofday mbstowcs wcswidth mmap setlocale \
1263 gcc_UNLOCKED_FUNCS madvise)
1265 if test x$ac_cv_func_mbstowcs = xyes; then
1266 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1267 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1273 [gcc_cv_func_mbstowcs_works=yes],
1274 [gcc_cv_func_mbstowcs_works=no],
1275 [gcc_cv_func_mbstowcs_works=yes])])
1276 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1277 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1278 [Define this macro if mbstowcs does not crash when its
1279 first argument is NULL.])
1283 AC_CHECK_TYPE(ssize_t, int)
1284 AC_CHECK_TYPE(caddr_t, char *)
1286 GCC_AC_FUNC_MMAP_BLACKLIST
1290 # Under VMS, vfork works very differently than on Unix. The standard test
1291 # won't work, and it isn't easily adaptable. It makes more sense to
1293 ac_cv_func_vfork_works=yes
1300 # Until we have in-tree GNU iconv:
1302 if test -f "$LTLIBICONV"; then
1303 LIBICONV_DEP=$LTLIBICONV
1305 AC_SUBST(LIBICONV_DEP)
1311 # We will need to find libiberty.h and ansidecl.h
1312 saved_CFLAGS="$CFLAGS"
1313 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1314 saved_CXXFLAGS="$CXXFLAGS"
1315 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1317 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1318 # normal autoconf function for these. But force definition of
1319 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1320 # basename handling in libiberty.h.
1321 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1322 #undef HAVE_DECL_BASENAME
1323 #define HAVE_DECL_BASENAME 1
1324 #include "ansidecl.h"
1325 #include "system.h"])
1327 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1328 madvise stpcpy strnlen strsignal strverscmp \
1329 strtol strtoul strtoll strtoull setenv unsetenv \
1330 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1331 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1332 #include "ansidecl.h"
1333 #include "system.h"])
1335 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1336 #include "ansidecl.h"
1338 #ifdef HAVE_SYS_RESOURCE_H
1339 #include <sys/resource.h>
1343 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1344 #include "ansidecl.h"
1346 #ifdef HAVE_SYS_RESOURCE_H
1347 #include <sys/resource.h>
1349 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1350 [Define to `long' if <sys/resource.h> doesn't define.])])
1352 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1353 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1354 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1355 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1356 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1357 #include "ansidecl.h"
1366 gcc_AC_CHECK_DECLS(times, , ,[
1367 #include "ansidecl.h"
1369 #ifdef HAVE_SYS_TIMES_H
1370 #include <sys/times.h>
1374 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1375 #include "ansidecl.h"
1380 # More time-related stuff.
1381 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1382 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1383 #include "ansidecl.h"
1385 #ifdef HAVE_SYS_TIMES_H
1386 #include <sys/times.h>
1388 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1389 if test $ac_cv_struct_tms = yes; then
1390 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1391 [Define if <sys/times.h> defines struct tms.])
1394 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1395 # revisit after autoconf 2.50.
1396 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1397 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1398 #include "ansidecl.h"
1400 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1401 if test $gcc_cv_type_clock_t = yes; then
1402 AC_DEFINE(HAVE_CLOCK_T, 1,
1403 [Define if <time.h> defines clock_t.])
1406 # Check if F_SETLKW is supported by fcntl.
1407 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1408 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1409 #include <fcntl.h>]], [[
1415 return fcntl (1, F_SETLKW, &fl);]])],
1416 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1417 if test $ac_cv_f_setlkw = yes; then
1418 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1419 [Define if F_SETLKW supported by fcntl.])
1422 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1423 CFLAGS="$saved_CFLAGS"
1424 CXXFLAGS="$saved_CXXFLAGS"
1426 # mkdir takes a single argument on some systems.
1427 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1435 # With Setjmp/Longjmp based exception handling.
1436 AC_ARG_ENABLE(sjlj-exceptions,
1437 [AS_HELP_STRING([--enable-sjlj-exceptions],
1438 [arrange to use setjmp/longjmp exception handling])],
1441 if test $enableval != yes; then
1442 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1447 force_sjlj_exceptions=yes],
1450 force_sjlj_exceptions=yes
1454 force_sjlj_exceptions=yes
1458 force_sjlj_exceptions=no
1461 if test $force_sjlj_exceptions = yes; then
1462 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1463 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1464 [Define 0/1 to force the choice for exception handling model.])
1467 # --------------------------------------------------------
1468 # Build, host, and target specific configuration fragments
1469 # --------------------------------------------------------
1471 # Collect build-machine-specific information.
1472 . ${srcdir}/config.build || exit 1
1474 # Collect host-machine-specific information.
1475 . ${srcdir}/config.host || exit 1
1479 # Collect target-machine-specific information.
1480 . ${srcdir}/config.gcc || exit 1
1482 extra_objs="${host_extra_objs} ${extra_objs}"
1483 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1485 # Default the target-machine variables that were not explicitly set.
1486 if test x"$tm_file" = x
1487 then tm_file=$cpu_type/$cpu_type.h; fi
1489 if test x"$extra_headers" = x
1490 then extra_headers=; fi
1492 if test x$md_file = x
1493 then md_file=$cpu_type/$cpu_type.md; fi
1495 if test x$out_file = x
1496 then out_file=$cpu_type/$cpu_type.c; fi
1498 if test x"$tmake_file" = x
1499 then tmake_file=$cpu_type/t-$cpu_type
1502 # Support --enable-initfini-array.
1503 if test x$enable_initfini_array != xno; then
1504 tm_file="${tm_file} initfini-array.h"
1507 if test x"$dwarf2" = xyes
1508 then tm_file="$tm_file tm-dwarf2.h"
1511 # Say what files are being used for the output code and MD file.
1512 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1513 echo "Using \`$srcdir/config/$md_file' as machine description file."
1515 # If any of the xm_file variables contain nonexistent files, warn
1516 # about them and drop them.
1519 for x in $build_xm_file; do
1520 if test -f $srcdir/config/$x
1522 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1528 for x in $host_xm_file; do
1529 if test -f $srcdir/config/$x
1531 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1537 for x in $xm_file; do
1538 if test -f $srcdir/config/$x
1540 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1546 for f in $tm_file; do
1549 if test $count = ax; then
1550 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1552 echo "Using the following target machine macro files:"
1553 for f in $tm_file; do
1554 echo " $srcdir/config/$f"
1558 if test x$use_long_long_for_widest_fast_int = xyes; then
1559 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1560 [Define to 1 if the 'long long' type is wider than 'long' but still
1561 efficiently supported by the host hardware.])
1564 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1565 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1567 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1568 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1571 for f in $host_xm_file; do
1574 if test $count = a; then
1576 elif test $count = ax; then
1577 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1579 echo "Using the following host machine macro files:"
1580 for f in $host_xm_file; do
1581 echo " $srcdir/config/$f"
1584 echo "Using ${out_host_hook_obj} for host machine hooks."
1586 if test "$host_xm_file" != "$build_xm_file"; then
1588 for f in $build_xm_file; do
1591 if test $count = a; then
1593 elif test $count = ax; then
1594 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1596 echo "Using the following build machine macro files:"
1597 for f in $build_xm_file; do
1598 echo " $srcdir/config/$f"
1603 if test -n "$configured_native_system_header_dir"; then
1604 native_system_header_dir=$configured_native_system_header_dir
1606 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1607 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1611 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1612 gcc_cv_mcontext_underscores,
1613 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1614 #include <sys/cdefs.h>
1615 #include <sys/signal.h>
1616 #include <ucontext.h>
1617 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1619 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1620 if test $gcc_cv_mcontext_underscores = yes; then
1621 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1622 [mcontext_t fields start with __])
1631 # Check if a valid thread package
1632 case ${enable_threads} in
1635 target_thread_file='single'
1639 target_thread_file='single'
1641 aix | dce | lynx | mipssde | posix | rtems | \
1642 single | tpf | vxworks | win32)
1643 target_thread_file=${enable_threads}
1646 echo "${enable_threads} is an unknown thread package" 1>&2
1651 if test x${thread_file} = x; then
1652 # No thread file set by target-specific clauses in config.gcc,
1653 # so use file chosen by default logic above
1654 thread_file=${target_thread_file}
1662 if test x$enable___cxa_atexit = xyes || \
1663 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1664 if test x$host = x$target; then
1666 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1667 # keyed to flag_use_cxa_atexit
1675 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1676 [echo "__cxa_atexit can't be enabled on this target"])
1680 # We can't check for __cxa_atexit when building a cross, so assume
1684 if test x$use_cxa_atexit = xyes; then
1685 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1686 [Define if you want to use __cxa_atexit, rather than atexit, to
1687 register C++ destructors for local statics and global objects.
1688 This is essential for fully standards-compliant handling of
1689 destructors, but requires __cxa_atexit in libc.])
1693 # Look for a file containing extra machine modes.
1694 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1695 extra_modes_file='$(srcdir)'/config/${extra_modes}
1696 AC_SUBST(extra_modes_file)
1697 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1698 [Define to the name of a file containing a list of extra machine modes
1699 for this architecture.])
1702 # Convert extra_options into a form suitable for Makefile use.
1705 for f in $extra_options; do
1706 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1707 all_opt_files="$all_opt_files $srcdir/config/$f"
1709 AC_SUBST(extra_opt_files)
1711 # auto-host.h is the file containing items generated by autoconf and is
1712 # the first file included by config.h.
1713 # If host=build, it is correct to have bconfig include auto-host.h
1714 # as well. If host!=build, we are in error and need to do more
1715 # work to find out the build config parameters.
1716 if test x$host = x$build
1718 build_auto=auto-host.h
1720 # We create a subdir, then run autoconf in the subdir.
1721 # To prevent recursion we set host and build for the new
1722 # invocation of configure to the build for this invocation
1729 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1730 *) realsrcdir=../${srcdir};;
1732 # Clearing GMPINC is necessary to prevent host headers being
1733 # used by the build compiler. Defining GENERATOR_FILE stops
1734 # system.h from including gmp.h.
1735 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1736 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1737 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1738 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1739 ${realsrcdir}/configure \
1740 --enable-languages=${enable_languages-all} \
1741 --target=$target_alias --host=$build_alias --build=$build_alias
1743 # We just finished tests for the build machine, so rename
1744 # the file auto-build.h in the gcc directory.
1745 mv auto-host.h ../auto-build.h
1748 build_auto=auto-build.h
1750 AC_SUBST(build_subdir)
1752 tm_file="${tm_file} defaults.h"
1753 tm_p_file="${tm_p_file} tm-preds.h"
1754 tm_d_file="${tm_d_file} defaults.h"
1755 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1756 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1757 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1758 # put this back in temporarily.
1759 xm_file="auto-host.h ansidecl.h ${xm_file}"
1766 # Compile in configure arguments.
1767 if test -f configargs.h ; then
1768 # Being re-configured.
1769 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1770 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'`
1771 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then
1772 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1775 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1778 # Double all backslashes and backslash all quotes to turn
1779 # gcc_config_arguments into a C string.
1780 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1781 $gcc_config_arguments
1783 gcc_config_arguments_str=`cat conftest.out`
1786 cat > configargs.h <<EOF
1787 /* Generated automatically. */
1788 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1789 static const char thread_model[] = "$thread_file";
1791 static const struct {
1792 const char *name, *value;
1793 } configure_default_options[] = $configure_default_options;
1798 gcc_BASEVER=`cat $srcdir/BASE-VER`
1799 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1800 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1801 if test -f $srcdir/REVISION ; then
1802 gcc_REVISION=`cat $srcdir/REVISION`
1806 cat > plugin-version.h <<EOF
1807 #include "configargs.h"
1809 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1810 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1811 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1812 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1814 static char basever[] = "$gcc_BASEVER";
1815 static char datestamp[] = "$gcc_DATESTAMP";
1816 static char devphase[] = "$gcc_DEVPHASE";
1817 static char revision[] = "$gcc_REVISION";
1819 /* FIXME plugins: We should make the version information more precise.
1820 One way to do is to add a checksum. */
1822 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1824 configuration_arguments};
1828 # Determine what GCC version number to use in filesystem paths.
1831 # Internationalization
1832 ZW_GNU_GETTEXT_SISTER_DIR
1834 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1835 # -liconv on the link line twice.
1836 case "$LIBINTL" in *$LIBICONV*)
1840 AC_ARG_ENABLE(secureplt,
1841 [AS_HELP_STRING([--enable-secureplt],
1842 [enable -msecure-plt by default for PowerPC])],
1845 AC_ARG_ENABLE(mingw-wildcard,
1846 [AS_HELP_STRING([--enable-mingw-wildcard],
1847 [Set whether to expand wildcard on command-line.
1848 Default to platform configuration])],
1849 [],[enable_mingw_wildcard=platform])
1850 AS_IF([test x"$enable_mingw_wildcard" != xplatform ],
1851 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD,
1852 $(test x"$enable_mingw_wildcard" = xno; echo $?),
1853 [Value to set mingw's _dowildcard to.])])
1855 AC_ARG_ENABLE(large-address-aware,
1856 [AS_HELP_STRING([--enable-large-address-aware],
1857 [Link mingw executables with --large-address-aware])])
1858 AS_IF([test x"$enable_large_address_aware" = xyes],
1859 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1,
1860 [Define if we should link mingw executables with --large-address-aware])])
1862 AC_ARG_ENABLE(leading-mingw64-underscores,
1863 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1864 [enable leading underscores on 64 bit mingw targets]),
1866 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1867 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1868 [Define if we should use leading underscore on 64 bit mingw targets])])
1871 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1874 AC_ARG_ENABLE(frame-pointer,
1875 [AS_HELP_STRING([--enable-frame-pointer],
1876 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1879 linux* | darwin[[8912]]*)
1880 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1882 enable_frame_pointer=no
1885 enable_frame_pointer=yes
1890 # Windows32 Registry support for specifying GCC installation paths.
1891 AC_ARG_ENABLE(win32-registry,
1892 [AS_HELP_STRING([--disable-win32-registry],
1893 [disable lookup of installation paths in the
1894 Registry on Windows hosts])
1895 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1896 AS_HELP_STRING([--enable-win32-registry=KEY],
1897 [use KEY instead of GCC version as the last portion
1898 of the registry key])],,)
1901 win32 | pe | cygwin* | mingw32*)
1902 if test "x$enable_win32_registry" != xno; then
1903 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1906 if test "x$enable_win32_registry" != xno; then
1907 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1908 [Define to 1 if installation paths should be looked up in the Windows
1909 Registry. Ignored on non-Windows hosts.])
1911 if test "x$enable_win32_registry" != xyes \
1912 && test "x$enable_win32_registry" != x; then
1913 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1914 [Define to be the last component of the Windows registry key under which
1915 to look for installation paths. The full key used will be
1916 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1917 The default is the GCC version number.])
1923 # Get an absolute path to the GCC top-level source directory
1924 holddir=`${PWDCMD-pwd}`
1926 topdir=`${PWDCMD-pwd}`
1929 # Conditionalize the makefile for this host machine.
1931 for f in ${host_xmake_file}
1933 if test -f ${srcdir}/config/$f
1935 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1939 # Conditionalize the makefile for this target machine.
1941 for f in ${tmake_file}
1943 if test -f ${srcdir}/config/$f
1945 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1948 tmake_file="${tmake_file_}"
1950 out_object_file=`basename $out_file .c`.o
1951 common_out_object_file=`basename $common_out_file .c`.o
1953 tm_file_list="options.h"
1954 tm_include_list="options.h insn-constants.h"
1955 for f in $tm_file; do
1958 f=`echo $f | sed 's/^..//'`
1959 tm_file_list="${tm_file_list} $f"
1960 tm_include_list="${tm_include_list} $f"
1963 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1964 tm_include_list="${tm_include_list} $f"
1967 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1968 tm_include_list="${tm_include_list} config/$f"
1975 for f in $tm_p_file; do
1978 tm_p_file_list="${tm_p_file_list} $f"
1979 tm_p_include_list="${tm_p_include_list} $f"
1982 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1983 tm_p_include_list="${tm_p_include_list} config/$f"
1988 tm_d_include_list="options.h insn-constants.h"
1989 for f in $tm_d_file; do
1992 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f"
1993 tm_d_include_list="${tm_d_include_list} $f"
1996 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f"
1997 tm_d_include_list="${tm_d_include_list} config/$f"
2004 for f in $xm_file; do
2007 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
2008 xm_include_list="${xm_include_list} $f"
2011 xm_file_list="${xm_file_list} $f"
2012 xm_include_list="${xm_include_list} $f"
2015 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
2016 xm_include_list="${xm_include_list} config/$f"
2022 host_xm_include_list=
2023 for f in $host_xm_file; do
2026 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
2027 host_xm_include_list="${host_xm_include_list} $f"
2030 host_xm_file_list="${host_xm_file_list} $f"
2031 host_xm_include_list="${host_xm_include_list} $f"
2034 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
2035 host_xm_include_list="${host_xm_include_list} config/$f"
2041 for f in $build_xm_file; do
2044 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
2045 build_xm_include_list="${build_xm_include_list} $f"
2047 auto-build.h | auto-host.h )
2048 build_xm_file_list="${build_xm_file_list} $f"
2049 build_xm_include_list="${build_xm_include_list} $f"
2052 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
2053 build_xm_include_list="${build_xm_include_list} config/$f"
2058 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
2059 # cross-compiler which does not use the native headers and libraries.
2060 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
2061 CROSS= AC_SUBST(CROSS)
2062 ALL=all.internal AC_SUBST(ALL)
2063 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
2064 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
2066 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
2067 test x$build != x$host || test "x$with_build_sysroot" != x; then
2068 if test "x$with_build_sysroot" != x; then
2069 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
2071 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2074 if test x$host != x$target
2076 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
2078 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR
2079 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2080 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
2083 if test "x$with_build_sysroot" != "x"; then
2084 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2085 elif test "x$with_sysroot" = x; then
2086 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2087 elif test "x$with_sysroot" = xyes; then
2088 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2090 target_header_dir="${with_sysroot}${native_system_header_dir}"
2093 target_header_dir=${native_system_header_dir}
2096 # If this is a cross-compiler that does not
2097 # have its own set of headers then define
2100 # If this is using newlib, without having the headers available now,
2101 # then define inhibit_libc in LIBGCC2_CFLAGS.
2102 # This prevents libgcc2 from containing any code which requires libc
2104 : ${inhibit_libc=false}
2105 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2106 test x$with_newlib = xyes ; } &&
2107 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2110 AC_SUBST(inhibit_libc)
2112 # When building gcc with a cross-compiler, we need to adjust things so
2113 # that the generator programs are still built with the native compiler.
2114 # Also, we cannot run fixincludes.
2116 # These are the normal (build=host) settings:
2117 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2118 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2119 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2120 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2121 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2122 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2124 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2125 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2127 # And these apply if build != host, or we are generating coverage data
2128 if test x$build != x$host || test "x$coverage_flags" != x
2130 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2131 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2132 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2134 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2135 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2136 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2137 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2139 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2140 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2142 # Expand extra_headers to include complete path.
2143 # This substitutes for lots of t-* files.
2145 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2146 for file in ${extra_headers} ; do
2147 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2150 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2151 if test x"$use_gcc_tgmath" = xyes
2152 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2155 # Define collect2 in Makefile.
2156 case $host_can_use_collect2 in
2158 *) collect2='collect2$(exeext)' ;;
2160 AC_SUBST([collect2])
2162 # Add a definition of USE_COLLECT2 if system wants one.
2163 case $use_collect2 in
2164 no) use_collect2= ;;
2167 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2168 xm_defines="${xm_defines} USE_COLLECT2"
2169 case $host_can_use_collect2 in
2171 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2177 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2178 [Define to the name of the LTO plugin DSO that must be
2179 passed to the linker's -plugin=LIB option.])
2181 # ---------------------------
2182 # Assembler & linker features
2183 # ---------------------------
2185 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2186 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2187 # However when ld-new is first executed from the build tree, libtool will
2188 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2189 # to the build tree. While doing this we need to use the previous-stage
2190 # linker, or we have an infinite loop. The presence of a shell script as
2191 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2192 # the gcc/collect-ld script. So we need to know how libtool works, or
2193 # exec-tool will fail.
2195 m4_defun([_LT_CONFIG_COMMANDS], [])
2198 AC_SUBST(enable_fast_install)
2200 # Identify the assembler which will work hand-in-glove with the newly
2201 # built GCC, so that we can examine its features. This is the assembler
2202 # which will be driven by the driver program.
2204 # If build != host, and we aren't building gas in-tree, we identify a
2205 # build->target assembler and hope that it will have the same features
2206 # as the host->target assembler we'll be using.
2207 gcc_cv_gas_major_version=
2208 gcc_cv_gas_minor_version=
2209 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2211 m4_pattern_allow([AS_FOR_TARGET])dnl
2212 AS_VAR_SET_IF(gcc_cv_as,, [
2213 if test -x "$DEFAULT_ASSEMBLER"; then
2214 gcc_cv_as="$DEFAULT_ASSEMBLER"
2215 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2216 && test -f ../gas/Makefile \
2217 && test x$build = x$host; then
2218 gcc_cv_as=../gas/as-new$build_exeext
2219 elif test -x as$build_exeext; then
2220 # Build using assembler in the current directory.
2221 gcc_cv_as=./as$build_exeext
2222 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2223 gcc_cv_as="$AS_FOR_TARGET"
2225 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2228 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2229 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2230 case "$ORIGINAL_AS_FOR_TARGET" in
2231 ./as | ./as$build_exeext) ;;
2232 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2235 AC_MSG_CHECKING(what assembler to use)
2236 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2237 # Single tree build which includes gas. We want to prefer it
2238 # over whatever linker top-level may have detected, since
2239 # we'll use what we're building after installation anyway.
2240 AC_MSG_RESULT(newly built gas)
2242 _gcc_COMPUTE_GAS_VERSION
2243 in_tree_gas_is_elf=no
2244 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2245 || (grep 'obj_format = multi' ../gas/Makefile \
2246 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2248 in_tree_gas_is_elf=yes
2251 AC_MSG_RESULT($gcc_cv_as)
2257 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2258 [case "${enableval}" in
2264 install_gold_as_default=no
2266 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2267 [case "${enableval}" in
2269 install_gold_as_default=yes
2272 if test x${default_ld} != x; then
2273 install_gold_as_default=yes
2279 AC_MSG_ERROR([invalid --enable-gold argument])
2283 # Identify the linker which will work hand-in-glove with the newly
2284 # built GCC, so that we can examine its features. This is the linker
2285 # which will be driven by the driver program.
2287 # If build != host, and we aren't building gas in-tree, we identify a
2288 # build->target linker and hope that it will have the same features
2289 # as the host->target linker we'll be using.
2290 gcc_cv_gld_major_version=
2291 gcc_cv_gld_minor_version=
2292 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2293 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2294 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2296 AS_VAR_SET_IF(gcc_cv_ld,, [
2297 if test -x "$DEFAULT_LINKER"; then
2298 gcc_cv_ld="$DEFAULT_LINKER"
2299 elif test $install_gold_as_default = yes \
2300 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2301 && test -f ../gold/Makefile \
2302 && test x$build = x$host; then
2303 gcc_cv_ld=../gold/ld-new$build_exeext
2304 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2305 && test -f ../ld/Makefile \
2306 && test x$build = x$host; then
2307 gcc_cv_ld=../ld/ld-new$build_exeext
2308 elif test -x collect-ld$build_exeext; then
2309 # Build using linker in the current directory.
2310 gcc_cv_ld=./collect-ld$build_exeext
2311 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2312 gcc_cv_ld="$LD_FOR_TARGET"
2314 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2317 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2318 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2319 # if the PLUGIN_LD is set ld-new, just have it as ld
2320 # as that is the installed named.
2321 if test x$PLUGIN_LD_SUFFIX = xld-new \
2322 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2325 AC_ARG_WITH(plugin-ld,
2326 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2327 [if test x"$withval" != x; then
2328 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2329 PLUGIN_LD_SUFFIX="$withval"
2331 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2332 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2334 # Check to see if we are using gold instead of ld
2335 AC_MSG_CHECKING(whether we are using gold)
2337 if test x$gcc_cv_ld != x; then
2338 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2339 | grep "GNU gold" > /dev/null; then
2343 AC_MSG_RESULT($ld_is_gold)
2345 AC_MSG_CHECKING(gold linker with split stack support as non default)
2346 # Check to see if default ld is not gold, but gold is
2347 # available and has support for split stack. If gcc was configured
2348 # with gold then no checking is done.
2350 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2352 # For platforms other than powerpc64*, enable as appropriate.
2355 ld_gold=`which ${gcc_cv_ld}.gold`
2356 # Make sure this gold has minimal split stack support
2357 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2358 ld_vers=`$ld_gold --version | sed 1q`
2359 gold_vers=`echo $ld_vers | sed -n \
2360 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2362 # check that the gold version contains the complete split stack support
2363 # on powerpc64 big and little endian
2365 case "$gold_vers" in
2366 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2368 *) gold_non_default=no
2374 if test $gold_non_default = yes; then
2375 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2376 [Define if the gold linker supports split stack and is available as a non-default])
2379 AC_MSG_RESULT($gold_non_default)
2381 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2382 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2383 case "$ORIGINAL_LD_FOR_TARGET" in
2384 ./collect-ld | ./collect-ld$build_exeext) ;;
2385 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2388 AC_MSG_CHECKING(what linker to use)
2389 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2390 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2391 # Single tree build which includes ld. We want to prefer it
2392 # over whatever linker top-level may have detected, since
2393 # we'll use what we're building after installation anyway.
2394 AC_MSG_RESULT(newly built ld)
2396 in_tree_ld_is_elf=no
2397 if (grep 'EMUL = .*elf' ../ld/Makefile \
2398 || grep 'EMUL = .*linux' ../ld/Makefile \
2399 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2400 in_tree_ld_is_elf=yes
2401 elif test "$ld_is_gold" = yes; then
2402 in_tree_ld_is_elf=yes
2404 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
2407 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2408 if test x$gcc_cv_gld_version != x; then
2412 case $gcc_cv_gld_version in
2415 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2418 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2419 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2421 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2422 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2424 AC_MSG_RESULT($gcc_cv_ld)
2426 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2427 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2428 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2431 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2432 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2434 # Figure out what nm we will be using.
2435 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2436 AS_VAR_SET_IF(gcc_cv_nm,, [
2437 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2438 && test -f ../binutils/Makefile \
2439 && test x$build = x$host; then
2440 gcc_cv_nm=../binutils/nm-new$build_exeext
2441 elif test -x nm$build_exeext; then
2442 gcc_cv_nm=./nm$build_exeext
2443 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2444 gcc_cv_nm="$NM_FOR_TARGET"
2446 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2449 AC_MSG_CHECKING(what nm to use)
2450 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2451 # Single tree build which includes binutils.
2452 AC_MSG_RESULT(newly built nm)
2455 AC_MSG_RESULT($gcc_cv_nm)
2459 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2460 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2461 case "$ORIGINAL_NM_FOR_TARGET" in
2462 ./nm | ./nm$build_exeext) ;;
2463 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2467 # Figure out what objdump we will be using.
2468 AS_VAR_SET_IF(gcc_cv_objdump,, [
2469 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2470 && test -f ../binutils/Makefile \
2471 && test x$build = x$host; then
2472 # Single tree build which includes binutils.
2473 gcc_cv_objdump=../binutils/objdump$build_exeext
2474 elif test -x objdump$build_exeext; then
2475 gcc_cv_objdump=./objdump$build_exeext
2476 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2477 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2479 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2482 AC_MSG_CHECKING(what objdump to use)
2483 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2484 # Single tree build which includes binutils.
2485 AC_MSG_RESULT(newly built objdump)
2486 elif test x$gcc_cv_objdump = x; then
2487 AC_MSG_RESULT(not found)
2489 AC_MSG_RESULT($gcc_cv_objdump)
2492 # Figure out what readelf we will be using.
2493 AS_VAR_SET_IF(gcc_cv_readelf,, [
2494 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2495 && test -f ../binutils/Makefile \
2496 && test x$build = x$host; then
2497 # Single tree build which includes binutils.
2498 gcc_cv_readelf=../binutils/readelf$build_exeext
2499 elif test -x readelf$build_exeext; then
2500 gcc_cv_readelf=./readelf$build_exeext
2501 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2502 gcc_cv_readelf="$READELF_FOR_TARGET"
2504 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2507 AC_MSG_CHECKING(what readelf to use)
2508 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2509 # Single tree build which includes binutils.
2510 AC_MSG_RESULT(newly built readelf)
2511 elif test x$gcc_cv_readelf = x; then
2512 AC_MSG_RESULT(not found)
2514 AC_MSG_RESULT($gcc_cv_readelf)
2517 # Figure out what otool we will be using.
2518 AS_VAR_SET_IF(gcc_cv_otool,, [
2519 if test -x otool$build_exeext; then
2520 gcc_cv_otool=./otool$build_exeext
2521 elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
2522 gcc_cv_otool="$OTOOL_FOR_TARGET"
2524 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
2527 AC_MSG_CHECKING(what otool to use)
2528 if test x$gcc_cv_otool = x; then
2529 AC_MSG_RESULT(not found)
2531 AC_MSG_RESULT($gcc_cv_otool)
2534 # Figure out what assembler alignment features are present.
2535 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2539 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2540 [Define if your assembler supports .balign and .p2align.])])
2542 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2545 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2546 [Define if your assembler supports specifying the maximum number
2547 of bytes to skip when using the GAS .p2align command.])])
2549 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2552 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2553 [Define if your assembler supports .literal16.])])
2555 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2557 [conftest_label1: .word 0
2559 conftest_label2: .word 0
2561 [if test x$gcc_cv_nm != x; then
2562 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2563 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2564 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2566 else gcc_cv_as_subsection_m1=yes
2568 rm -f conftest.nm1 conftest.nm2
2570 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2571 [Define if your assembler supports .subsection and .subsection -1 starts
2572 emitting at the beginning of your section.])])
2574 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2577 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2579 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2581 [ .weakref foobar, barfnot],,
2582 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2584 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2587 .NSUBSPA $CODE$,COMDAT],,
2588 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2590 # .hidden needs to be supported in both the assembler and the linker,
2591 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2592 # This is irritatingly difficult to feature test for; we have to check the
2593 # date string after the version number. If we've got an in-tree
2594 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2596 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2599 conftest_s=' .globl foobar,hidden'
2602 conftest_s=' .hidden foobar
2606 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2607 [elf,2,13,0],, [$conftest_s])
2610 # Darwin as has some visibility support, though with a different syntax.
2611 gcc_cv_as_hidden=yes
2615 # gnu_indirect_function type is an extension proposed at
2616 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2617 # selection of function implementation
2618 AC_ARG_ENABLE(gnu-indirect-function,
2619 [AS_HELP_STRING([--enable-gnu-indirect-function],
2620 [enable the use of the @gnu_indirect_function to glibc systems])],
2621 [case $enable_gnu_indirect_function in
2623 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2624 Valid choices are 'yes' and 'no'.]) ;;
2626 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2628 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2629 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2630 [Define if your system supports gnu indirect functions.])
2634 if test $in_tree_ld != yes ; then
2635 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2636 if echo "$ld_ver" | grep GNU > /dev/null; then
2637 if test x"$ld_is_gold" = xyes; then
2638 # GNU gold --version looks like this:
2640 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2642 # We extract the binutils version which is more familiar and specific
2643 # than the gold version.
2644 ld_vers=`echo $ld_ver | sed -n \
2645 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2647 # GNU ld --version looks like this:
2649 # GNU ld (GNU Binutils) 2.21.51.20110225
2650 ld_vers=`echo $ld_ver | sed -n \
2651 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2653 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2654 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2655 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2656 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2660 # Solaris 2 ld -V output looks like this for a regular version:
2662 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2664 # but test versions add stuff at the end:
2666 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2668 # In Solaris 11.4, this was changed to
2670 # ld: Solaris ELF Utilities: 11.4-1.3123
2672 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version
2673 # numbers can be used in ld.so.1 feature checks even if a different
2674 # linker is configured.
2675 ld_ver=`$gcc_cv_ld -V 2>&1`
2676 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then
2677 ld_vers=`echo $ld_ver | sed -n \
2678 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'`
2679 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2680 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2688 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2689 [[if test $in_tree_ld = yes ; then
2691 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2692 && test $in_tree_ld_is_elf = yes; then
2693 gcc_cv_ld_hidden=yes
2696 gcc_cv_ld_hidden=yes
2697 if test x"$ld_is_gold" = xyes; then
2699 elif echo "$ld_ver" | grep GNU > /dev/null; then
2701 mmix-knuth-mmixware)
2702 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2706 if test 0"$ld_date" -lt 20020404; then
2707 if test -n "$ld_date"; then
2708 # If there was date string, but was earlier than 2002-04-04, fail
2710 elif test -z "$ld_vers"; then
2711 # If there was no date string nor ld version number, something is wrong
2714 test -z "$ld_vers_patch" && ld_vers_patch=0
2715 if test "$ld_vers_major" -lt 2; then
2717 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2718 gcc_cv_ld_hidden="no"
2719 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2727 gcc_cv_ld_hidden=yes
2730 # Darwin ld has some visibility support.
2731 gcc_cv_ld_hidden=yes
2733 hppa64*-*-hpux* | ia64*-*-hpux*)
2734 gcc_cv_ld_hidden=yes
2736 *-*-solaris2.1[0-9]*)
2737 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2738 # .symbolic was only added in Solaris 9 12/02.
2739 gcc_cv_ld_hidden=yes
2747 libgcc_visibility=no
2748 AC_SUBST(libgcc_visibility)
2749 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2750 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2751 libgcc_visibility=yes
2752 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2753 [Define if your assembler and linker support .hidden.])
2756 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2757 gcc_cv_ld_ro_rw_mix=unknown
2758 if test $in_tree_ld = yes ; then
2759 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2760 && test $in_tree_ld_is_elf = yes; then
2761 gcc_cv_ld_ro_rw_mix=read-write
2763 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2764 echo '.section myfoosect, "a"' > conftest1.s
2765 echo '.section myfoosect, "aw"' > conftest2.s
2766 echo '.byte 1' >> conftest2.s
2767 echo '.section myfoosect, "a"' > conftest3.s
2768 echo '.byte 0' >> conftest3.s
2769 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2770 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2771 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2772 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2773 conftest2.o conftest3.o > /dev/null 2>&1; then
2774 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2775 | sed -e '/myfoosect/!d' -e N`
2776 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2777 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2778 gcc_cv_ld_ro_rw_mix=read-only
2780 gcc_cv_ld_ro_rw_mix=read-write
2785 rm -f conftest.* conftest[123].*
2788 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2789 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2790 [Define if your linker links a mix of read-only
2791 and read-write sections into a read-write section.])
2793 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2795 gcc_AC_INITFINI_ARRAY
2797 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2798 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2806 [[# GAS versions before 2.11 do not support uleb128,
2807 # despite appearing to.
2808 # ??? There exists an elf-specific test that will crash
2809 # the assembler. Perhaps it's better to figure out whether
2810 # arbitrary sections are supported and try the test.
2811 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2812 if echo "$as_ver" | grep GNU > /dev/null; then
2813 as_vers=`echo $as_ver | sed -n \
2814 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2815 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2816 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2817 if test $as_major -eq 2 && test $as_minor -lt 11
2819 else gcc_cv_as_leb128=yes
2822 [AC_DEFINE(HAVE_AS_LEB128, 1,
2823 [Define if your assembler supports .sleb128 and .uleb128.])],
2824 [AC_DEFINE(HAVE_AS_LEB128, 0,
2825 [Define if your assembler supports .sleb128 and .uleb128.])])
2827 # Determine if an .eh_frame section is read-only.
2828 gcc_fn_eh_frame_ro () {
2829 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \
2830 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2831 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null
2834 # Check if we have assembler support for unwind directives.
2835 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2842 .cfi_escape 1, 2, 3, 4, 5
2846 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2847 # read-only and read-write sections, we need to make sure that the
2848 # assembler used emits read-write .eh_frame sections.
2849 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then
2850 gcc_cv_as_cfi_directive=yes
2851 elif test "x$gcc_cv_objdump" = x; then
2852 # No objdump, err on the side of caution.
2853 gcc_cv_as_cfi_directive=no
2855 if test x$gas = xyes; then
2863 sparc*-*-solaris2.*)
2864 # On Solaris/SPARC, .eh_frame sections should always be read-write.
2865 if gcc_fn_eh_frame_ro $as_32_opt \
2866 || gcc_fn_eh_frame_ro $as_64_opt; then
2867 gcc_cv_as_cfi_directive=no
2869 gcc_cv_as_cfi_directive=yes
2872 i?86-*-solaris2.* | x86_64-*-solaris2.*)
2873 # On Solaris/x86, make sure that GCC and assembler agree on using
2874 # read-only .eh_frame sections for 64-bit.
2875 if gcc_fn_eh_frame_ro $as_32_opt; then
2876 gcc_cv_as_cfi_directive=no
2877 elif gcc_fn_eh_frame_ro $as_64_opt; then
2878 gcc_cv_as_cfi_directive=yes
2880 gcc_cv_as_cfi_directive=no
2887 gcc_cv_as_cfi_directive=yes
2890 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2891 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2895 .cfi_adjust_cfa_offset 64
2897 .cfi_adjust_cfa_offset 128
2900 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2901 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2902 gcc_cv_as_cfi_advance_working=yes
2906 # no objdump, err on the side of caution
2907 gcc_cv_as_cfi_advance_working=no
2909 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2910 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2911 [`if test $gcc_cv_as_cfi_directive = yes \
2912 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2913 [Define 0/1 if your assembler supports CFI directives.])
2915 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2916 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2917 gcc_cv_as_cfi_personality_directive, ,,
2920 .cfi_personality 0, symbol
2922 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2923 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`],
2924 [Define 0/1 if your assembler supports .cfi_personality.])
2926 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2927 gcc_cv_as_cfi_sections_directive, ,,
2929 .cfi_sections .debug_frame, .eh_frame
2933 win32 | pe | cygwin* | mingw32*)
2934 # Need to check that we generated the correct relocation for the
2935 # .debug_frame section. This was fixed for binutils 2.21.
2936 gcc_cv_as_cfi_sections_directive=no
2937 if test "x$gcc_cv_objdump" != x; then
2938 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2939 grep secrel > /dev/null; then
2940 gcc_cv_as_cfi_sections_directive=yes
2945 gcc_cv_as_cfi_sections_directive=yes
2948 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2949 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2950 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`],
2951 [Define 0/1 if your assembler supports .cfi_sections.])
2953 # GAS versions up to and including 2.11.0 may mis-optimize
2955 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2963 .section .eh_frame,"aw",@progbits
2965 .4byte .LECIE1-.LSCIE1
2979 .4byte .LEFDE1-.LASFDE1
2981 .4byte .LASFDE1-__FRAME_BEGIN__
2989 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2990 cat > conftest.lit <<EOF
2991 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2992 0010 01000000 12000000 18000000 00000000 ................
2993 0020 08000000 04080000 0044 .........D @&t@
2995 cat > conftest.big <<EOF
2996 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2997 0010 00000001 00000012 00000018 00000000 ................
2998 0020 00000008 04000000 0844 .........D @&t@
3000 # If the assembler didn't choke, and we can objdump,
3001 # and we got the correct data, then succeed.
3002 # The text in the here-document typically retains its unix-style line
3003 # endings, while the output of objdump will use host line endings.
3004 # Therefore, use diff -b for the comparisons.
3005 if test x$gcc_cv_objdump != x \
3006 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
3007 | tail -3 > conftest.got \
3008 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
3009 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
3011 gcc_cv_as_eh_frame=yes
3012 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
3013 gcc_cv_as_eh_frame=buggy
3015 # Uh oh, what do we do now?
3016 gcc_cv_as_eh_frame=no
3019 if test $gcc_cv_as_eh_frame = buggy; then
3020 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
3021 [Define if your assembler mis-optimizes .eh_frame data.])
3024 # Test if the assembler supports the section flag 'e' or #exclude for
3025 # specifying an excluded section.
3026 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e,
3027 [2,22,51], [--fatal-warnings],
3030 if test $gcc_cv_as_section_exclude_e = no; then
3032 # Solaris as uses #exclude instead.
3036 conftest_s='.section "foo1", #exclude'
3038 i?86-*-solaris2* | x86_64-*-solaris2*)
3039 conftest_s='.section foo1, #exclude'
3044 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,,
3048 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3049 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`],
3050 [Define if your assembler supports specifying the exclude section flag.])
3052 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3053 [elf,2,12,0], [--fatal-warnings],
3054 [.section .rodata.str, "aMS", @progbits, 1])
3055 if test $gcc_cv_as_shf_merge = no; then
3056 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
3057 [elf,2,12,0], [--fatal-warnings],
3058 [.section .rodata.str, "aMS", %progbits, 1])
3061 i?86-*-solaris2.10* | x86_64-*-solaris2.10*)
3062 # SHF_MERGE support in Solaris 10/x86 ld is broken.
3063 if test x"$gnu_ld" = xno; then
3064 gcc_cv_as_shf_merge=no
3068 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
3069 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
3070 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
3072 gcc_cv_ld_aligned_shf_merge=yes
3074 # While Solaris 10/SPARC ld isn't affected, disable to avoid problems
3075 # relinking on Solaris 11 < 11.4.
3076 sparc*-*-solaris2.10*)
3077 if test x"$gnu_ld" = xno; then
3078 gcc_cv_ld_aligned_shf_merge=no
3081 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for
3083 sparc*-*-solaris2.11*)
3084 if test x"$gnu_ld" = xno \
3085 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then
3086 gcc_cv_ld_aligned_shf_merge=no
3090 AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE,
3091 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`],
3092 [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.])
3094 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
3095 [.stabs "gcc2_compiled.",60,0,0,0],,
3096 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
3097 [Define if your assembler supports .stabs.])])
3099 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
3100 gcc_cv_as_comdat_group,
3101 [elf,2,16,0], [--fatal-warnings],
3102 [.section .text,"axG",@progbits,.foo,comdat])
3103 if test $gcc_cv_as_comdat_group = yes; then
3104 gcc_cv_as_comdat_group_percent=no
3105 gcc_cv_as_comdat_group_group=no
3107 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
3108 gcc_cv_as_comdat_group_percent,
3109 [elf,2,16,0], [--fatal-warnings],
3110 [.section .text,"axG",%progbits,.foo,comdat])
3111 if test $gcc_cv_as_comdat_group_percent = yes; then
3112 gcc_cv_as_comdat_group_group=no
3115 # Sun as uses a completely different syntax.
3120 .group foo,".text%foo",#comdat
3121 .section ".text%foo", #alloc,#execinstr,#progbits
3126 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
3128 .group foo,.text%foo,#comdat
3129 .section .text%foo, "ax", @progbits
3135 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
3136 gcc_cv_as_comdat_group_group,
3140 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
3141 gcc_cv_as_comdat_group_group=no
3145 if test x"$ld_is_gold" = xyes; then
3147 elif test $in_tree_ld = yes ; then
3149 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3150 && test $in_tree_ld_is_elf = yes; then
3153 elif echo "$ld_ver" | grep GNU > /dev/null; then
3155 if test 0"$ld_date" -lt 20050308; then
3156 if test -n "$ld_date"; then
3157 # If there was date string, but was earlier than 2005-03-08, fail
3159 elif test "$ld_vers_major" -lt 2; then
3161 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
3168 *-*-solaris2.1[1-9]*)
3170 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
3171 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
3174 # If using Sun as for COMDAT group as emitted by GCC, one needs at
3175 # least ld version 1.2267.
3176 if test "$ld_vers_major" -gt 1; then
3178 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
3180 elif test "$ld_vers_minor" -ge 2267; then
3185 # Assume linkers other than GNU ld don't support COMDAT group.
3191 # Allow overriding the automatic COMDAT group tests above.
3192 AC_ARG_ENABLE(comdat,
3193 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3194 [comdat_group="$enable_comdat"])
3195 if test $comdat_group = no; then
3196 gcc_cv_as_comdat_group=no
3197 gcc_cv_as_comdat_group_percent=no
3198 gcc_cv_as_comdat_group_group=no
3200 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3201 [`if test $gcc_cv_as_comdat_group = yes \
3202 || test $gcc_cv_as_comdat_group_percent = yes \
3203 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3204 [Define 0/1 if your assembler and linker support COMDAT groups.])
3206 # Restrict this test to Solaris/x86: other targets define this statically.
3208 i?86-*-solaris2* | x86_64-*-solaris2*)
3209 AC_MSG_CHECKING(support for hidden thunks in linkonce sections)
3210 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then
3214 # Full support for hidden thunks in linkonce sections only appeared in
3215 # Solaris 11/OpenSolaris.
3216 *-*-solaris2.1[[1-9]]*)
3224 AC_MSG_RESULT($hidden_linkonce)
3225 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE,
3226 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`],
3227 [Define 0/1 if your linker supports hidden thunks in linkonce sections.])
3231 gcc_GAS_CHECK_FEATURE([line table is_stmt support],
3236 .loc 1 1 0 is_stmt 1],,
3237 [AC_DEFINE(HAVE_GAS_LOC_STMT, 1,
3238 [Define if your assembler supports the .loc is_stmt sub-directive.])])
3240 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3241 gcc_cv_as_discriminator,
3245 .loc 1 1 0 discriminator 1],,
3246 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3247 [Define if your assembler supports the .loc discriminator sub-directive.])])
3249 # Thread-local storage - the check is heavily parameterized.
3258 .section ".tdata","awT",@progbits
3261 ldq $27,__tls_get_addr($29) !literal!1
3262 lda $16,foo($29) !tlsgd!1
3263 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3264 ldq $27,__tls_get_addr($29) !literal!2
3265 lda $16,foo($29) !tlsldm!2
3266 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3267 ldq $1,foo($29) !gotdtprel
3268 ldah $2,foo($29) !dtprelhi
3269 lda $3,foo($2) !dtprello
3270 lda $4,foo($29) !dtprel
3271 ldq $1,foo($29) !gottprel
3272 ldah $2,foo($29) !tprelhi
3273 lda $3,foo($2) !tprello
3274 lda $4,foo($29) !tprel'
3277 tls_as_opt=--fatal-warnings
3281 add_s r0,r0, @foo@tpoff'
3285 cris-*-*|crisv32-*-*)
3287 .section ".tdata","awT",@progbits
3294 tls_as_opt=--fatal-warnings
3298 .section ".tdata","awT",@progbits
3310 .section ".tdata","awT",@progbits
3314 addil LT%foo-$tls_gdidx$,gp
3315 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3318 addil LT%foo-$tls_ldidx$,gp
3320 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3321 addil LR%foo-$tls_dtpoff$,%ret0
3322 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3324 addil LT%foo-$tls_ieoff$,gp
3325 ldw RT%foo-$tls_ieoff$(%r1),%t2
3328 addil LR%foo-$tls_leoff$,%t1
3329 ldo RR%foo-$tls_leoff$(%r1),%t2'
3332 tls_as_opt=--fatal-warnings
3336 .section ".tdata","awT",%progbits
3347 i[34567]86-*-* | x86_64-*-*)
3349 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3356 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3358 .section .tdata,"awt",@progbits'
3363 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3364 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3368 .section ".tdata","awT",@progbits'
3372 tls_as_opt="--fatal-warnings"
3376 conftest_s="$conftest_s
3380 leal foo@tlsgd(,%ebx,1), %eax
3381 leal foo@tlsldm(%ebx), %eax
3382 leal foo@dtpoff(%eax), %edx
3383 movl foo@gottpoff(%ebx), %eax
3384 subl foo@gottpoff(%ebx), %eax
3385 addl foo@gotntpoff(%ebx), %eax
3386 movl foo@indntpoff, %eax
3387 movl \$foo@tpoff, %eax
3388 subl \$foo@tpoff, %eax
3389 leal foo@ntpoff(%ecx), %eax"
3392 if test x$on_solaris = xyes; then
3394 yes) tls_as_opt="$tls_as_opt --64" ;;
3395 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3398 conftest_s="$conftest_s
3402 leaq foo@tlsgd(%rip), %rdi
3403 leaq foo@tlsld(%rip), %rdi
3404 leaq foo@dtpoff(%rax), %rdx
3405 movq foo@gottpoff(%rip), %rax
3406 movq \$foo@tpoff, %rax"
3412 .section ".tdata","awT",@progbits
3415 addl r16 = @ltoff(@dtpmod(foo#)), gp
3416 addl r17 = @ltoff(@dtprel(foo#)), gp
3417 addl r18 = @ltoff(@tprel(foo#)), gp
3418 addl r19 = @dtprel(foo#), gp
3419 adds r21 = @dtprel(foo#), r13
3420 movl r23 = @dtprel(foo#)
3421 addl r20 = @tprel(foo#), gp
3422 adds r22 = @tprel(foo#), r13
3423 movl r24 = @tprel(foo#)'
3426 tls_as_opt=--fatal-warnings
3430 .section .tdata,"awT",@progbits
3434 addik r5,r20,x@TLSGD
3435 addik r5,r20,x@TLSLDM'
3438 tls_as_opt='--fatal-warnings'
3442 .section .tdata,"awT",@progbits
3446 addiu $4, $28, %tlsgd(x)
3447 addiu $4, $28, %tlsldm(x)
3448 lui $4, %dtprel_hi(x)
3449 addiu $4, $4, %dtprel_lo(x)
3450 lw $4, %gottprel(x)($28)
3451 lui $4, %tprel_hi(x)
3452 addiu $4, $4, %tprel_lo(x)'
3455 tls_as_opt='-32 --fatal-warnings'
3459 .section .tdata,"awT",@progbits
3464 move.l x@TLSGD(%a5),%a0
3465 move.l x@TLSLDM(%a5),%a0
3466 move.l x@TLSLDO(%a5),%a0
3467 move.l x@TLSIE(%a5),%a0
3468 move.l x@TLSLE(%a5),%a0'
3471 tls_as_opt='--fatal-warnings'
3475 .section ".tdata","awT",@progbits'
3478 tls_as_opt="--fatal-warnings"
3482 .section ".tdata","awT",%progbits
3486 add x0, x0, #:tlsgd_lo12:x
3491 tls_as_opt='--fatal-warnings'
3495 .section ".tdata","awT",@progbits
3498 l.movhi r3, tpoffha(foo)
3500 l.lwz r4, tpofflo(foo)(r3)'
3503 tls_as_opt=--fatal-warnings
3507 .extern __get_tpointer
3525 .section ".tdata","awT",@progbits
3533 addi 3,2,ld0@got@tlsgd
3539 addi 3,2,x1@got@tlsld
3545 addis 9,3,x2@dtprel@ha
3546 addi 9,9,x2@dtprel@l
3549 ld 9,x3@got@dtprel(2)
3555 tls_as_opt="-a64 --fatal-warnings"
3559 .section ".tdata","awT",@progbits
3567 addi 3,31,ld0@got@tlsgd
3569 addi 3,31,x1@got@tlsld
3572 addis 9,3,x2@dtprel@ha
3573 addi 9,9,x2@dtprel@l
3574 lwz 9,x3@got@tprel(31)
3577 addis 9,2,x2@tprel@ha
3578 addi 9,9,x2@tprel@l'
3581 tls_as_opt="-a32 --fatal-warnings"
3585 .section .tdata,"awT",@progbits
3589 call __tls_get_addr'
3592 tls_as_opt='--fatal-warnings'
3596 .section ".tdata","awT",@progbits
3605 l %r1,foo@GOTNTPOFF(%r12)
3606 l %r1,0(%r1):tls_load:foo
3607 bas %r14,0(%r1,%r13):tls_gdcall:foo
3608 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3611 tls_as_opt="-m31 --fatal-warnings"
3615 .section ".tdata","awT",@progbits
3623 lg %r1,foo@GOTNTPOFF(%r12)
3624 larl %r1,foo@INDNTPOFF
3625 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3626 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3629 tls_as_opt="-m64 -Aesame --fatal-warnings"
3631 sh-*-* | sh[123456789lbe]*-*-*)
3633 .section ".tdata","awT",@progbits
3643 tls_as_opt=--fatal-warnings
3647 sparc*-sun-solaris2.*)
3654 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3656 .section ".tdata",#alloc,#write,#tls'
3661 .section ".tdata","awT",@progbits'
3664 tls_as_opt="-32 --fatal-warnings"
3666 conftest_s="$conftest_s
3669 sethi %tgd_hi22(foo), %o0
3670 add %o0, %tgd_lo10(foo), %o1
3671 add %l7, %o1, %o0, %tgd_add(foo)
3672 call __tls_get_addr, %tgd_call(foo)
3673 sethi %tldm_hi22(foo), %l1
3674 add %l1, %tldm_lo10(foo), %l2
3675 add %l7, %l2, %o0, %tldm_add(foo)
3676 call __tls_get_addr, %tldm_call(foo)
3677 sethi %tldo_hix22(foo), %l3
3678 xor %l3, %tldo_lox10(foo), %l4
3679 add %o0, %l4, %l5, %tldo_add(foo)
3680 sethi %tie_hi22(foo), %o3
3681 add %o3, %tie_lo10(foo), %o3
3682 ld [%l7 + %o3], %o2, %tie_ld(foo)
3683 add %g7, %o2, %o4, %tie_add(foo)
3684 sethi %tle_hix22(foo), %l1
3685 xor %l1, %tle_lox10(foo), %o5
3686 ld [%g7 + %o5], %o1"
3690 .section ".tdata","awT",@progbits
3693 addli r0, zero, tls_gd(foo)
3694 auli r0, zero, tls_gd_ha16(foo)
3695 addli r0, r0, tls_gd_lo16(foo)
3697 addli r0, zero, tls_ie(foo)
3698 auli r0, r0, tls_ie_ha16(foo)
3699 addli r0, r0, tls_ie_lo16(foo)'
3702 tls_as_opt="--fatal-warnings"
3706 .section ".tdata","awT",@progbits
3709 shl16insli r0, zero, hw0_last_tls_gd(foo)
3710 shl16insli r0, zero, hw1_last_tls_gd(foo)
3711 shl16insli r0, r0, hw0_tls_gd(foo)
3713 shl16insli r0, zero, hw1_last_tls_ie(foo)
3714 shl16insli r0, r0, hw0_tls_ie(foo)'
3717 tls_as_opt="--fatal-warnings"
3721 .section ".tdata","awT",@progbits
3724 movi a8, foo@TLSFUNC
3725 movi a10, foo@TLSARG
3726 callx8.tls a8, foo@TLSCALL'
3733 if test "x$enable_tls" = xno ; then
3734 : # TLS explicitly disabled.
3735 elif test "x$enable_tls" = xyes ; then
3736 set_have_as_tls=yes # TLS explicitly enabled.
3737 elif test -z "$tls_first_major"; then
3738 : # If we don't have a check, assume no support.
3740 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3741 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3742 [set_have_as_tls=yes])
3744 if test $set_have_as_tls = yes ; then
3745 AC_DEFINE(HAVE_AS_TLS, 1,
3746 [Define if your assembler and linker support thread-local storage.])
3749 # Target-specific assembler checks.
3751 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3752 gcc_cv_ld_static_dynamic=no
3753 gcc_cv_ld_static_option='-Bstatic'
3754 gcc_cv_ld_dynamic_option='-Bdynamic'
3755 if test $in_tree_ld = yes ; then
3756 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3757 gcc_cv_ld_static_dynamic=yes
3759 elif test x$gcc_cv_ld != x; then
3760 # Check if linker supports -Bstatic/-Bdynamic option
3761 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \
3762 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then
3763 gcc_cv_ld_static_dynamic=yes
3766 # AIX ld uses -b flags
3767 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3768 gcc_cv_ld_static_dynamic=yes
3769 gcc_cv_ld_static_option="-bstatic"
3770 gcc_cv_ld_dynamic_option="-bdynamic"
3772 # HP-UX ld uses -a flags to select between shared and archive.
3774 if test x"$gnu_ld" = xno; then
3775 gcc_cv_ld_static_dynamic=yes
3776 gcc_cv_ld_static_option="-aarchive_shared"
3777 gcc_cv_ld_dynamic_option="-adefault"
3780 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3782 gcc_cv_ld_static_dynamic=yes
3787 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3788 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3789 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3790 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3791 [Define to the linker option to disable use of shared objects.])
3792 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3793 [Define to the linker option to enable use of shared objects.])
3795 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3797 AC_MSG_CHECKING(linker --version-script option)
3798 gcc_cv_ld_version_script=no
3799 ld_version_script_option=''
3800 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3801 gcc_cv_ld_version_script=yes
3802 ld_version_script_option='--version-script'
3803 elif test x$gcc_cv_ld != x; then
3805 # Solaris 2 ld always supports -M. It also supports a subset of
3806 # --version-script since Solaris 11.4, but requires
3807 # -z gnu-version-script-compat to activate.
3809 gcc_cv_ld_version_script=yes
3810 ld_version_script_option='-M'
3814 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3815 AC_MSG_RESULT($gcc_cv_ld_version_script)
3816 AC_SUBST(ld_version_script_option)
3818 AC_MSG_CHECKING(linker soname option)
3820 if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then
3821 gcc_cv_ld_soname=yes
3822 ld_soname_option='-soname'
3823 elif test x$gcc_cv_ld != x; then
3826 gcc_cv_ld_soname=yes
3827 ld_soname_option='-install_name'
3829 # Solaris 2 ld always supports -h. It also supports --soname for GNU
3830 # ld compatiblity since some Solaris 10 update.
3832 gcc_cv_ld_soname=yes
3833 ld_soname_option='-h'
3837 # Don't AC_DEFINE result, only used in jit/Make-lang.in so far.
3838 AC_MSG_RESULT($gcc_cv_ld_soname)
3839 AC_SUBST(ld_soname_option)
3841 if test x"$demangler_in_ld" = xyes; then
3842 AC_MSG_CHECKING(linker --demangle support)
3843 gcc_cv_ld_demangle=no
3844 if test $in_tree_ld = yes; then
3845 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3846 gcc_cv_ld_demangle=yes
3848 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3849 # Check if the GNU linker supports --demangle option
3850 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then
3851 gcc_cv_ld_demangle=yes
3854 if test x"$gcc_cv_ld_demangle" = xyes; then
3855 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3856 [Define if your linker supports --demangle option.])
3858 AC_MSG_RESULT($gcc_cv_ld_demangle)
3861 AC_MSG_CHECKING(linker plugin support)
3863 if test -f liblto_plugin.la; then
3864 save_ld_ver="$ld_ver"
3865 save_ld_vers_major="$ld_vers_major"
3866 save_ld_vers_minor="$ld_vers_minor"
3867 save_ld_is_gold="$ld_is_gold"
3871 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3873 # FIXME: ld_is_gold?
3874 ld_vers_major="$gcc_cv_gld_major_version"
3875 ld_vers_minor="$gcc_cv_gld_minor_version"
3877 # Determine plugin linker version.
3878 # FIXME: Partial duplicate from above, generalize.
3880 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3881 if echo "$ld_ver" | grep GNU > /dev/null; then
3882 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3884 ld_vers=`echo $ld_ver | sed -n \
3885 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3887 ld_vers=`echo $ld_ver | sed -n \
3888 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3890 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3891 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3896 # Determine plugin support.
3897 if echo "$ld_ver" | grep GNU > /dev/null; then
3898 # Require GNU ld or gold 2.21+ for plugin support by default.
3899 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3901 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3902 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3907 ld_ver="$save_ld_ver"
3908 ld_vers_major="$save_ld_vers_major"
3909 ld_vers_minor="$save_ld_vers_minor"
3910 ld_is_gold="$save_ld_is_gold"
3912 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3913 [Define to the level of your linker's plugin support.])
3914 AC_MSG_RESULT($gcc_cv_lto_plugin)
3916 # Target OS-specific assembler checks.
3918 case "$target_os" in
3920 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option],
3921 gcc_cv_as_mmacosx_version_min,,
3922 [-mmacosx-version-min=10.1], [.text],,
3923 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1,
3924 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])])
3928 # Target CPU-specific assembler checks.
3932 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3933 [-mabi=lp64], [.text],,,)
3934 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3935 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3936 [Define if your assembler supports the -mabi option.])
3938 if test x$with_abi = xilp32; then
3939 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3940 Upgrade the Assembler.])
3942 if test x"$with_multilib_list" = xdefault; then
3943 TM_MULTILIB_CONFIG=lp64
3945 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3946 for aarch64_multilib in ${aarch64_multilibs}; do
3947 case ${aarch64_multilib} in
3949 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3950 Upgrade the Assembler.])
3958 # Check if we have binutils support for relocations types needed by -fpic
3959 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3962 ldr x0, [[x2, #:gotpage_lo15:globalsym]]
3963 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3964 [Define if your assembler supports relocs needed by -fpic.])])
3965 # Enable Branch Target Identification Mechanism and Return Address
3966 # Signing by default.
3967 AC_ARG_ENABLE(standard-branch-protection,
3969 AS_HELP_STRING([--enable-standard-branch-protection],
3970 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
3971 AS_HELP_STRING([--disable-standard-branch-protection],
3972 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64])
3977 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1"
3982 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\
3983 Valid choices are 'yes' and 'no'.])
3988 # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3989 AC_ARG_ENABLE(fix-cortex-a53-835769,
3991 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3992 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3993 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3994 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3999 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
4004 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
4005 Valid choices are 'yes' and 'no'.])
4011 # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
4012 AC_ARG_ENABLE(fix-cortex-a53-843419,
4014 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
4015 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4016 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
4017 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
4022 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
4027 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
4028 Valid choices are 'yes' and 'no'.])
4036 # All TARGET_ABI_OSF targets.
4037 alpha*-*-linux* | alpha*-*-*bsd*)
4038 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4039 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
4042 extbl $3, $2, $3 !lituse_bytoff!1
4043 ldq $2, a($29) !literal!1
4044 ldq $4, b($29) !literal!2
4045 ldq_u $3, 0($2) !lituse_base!1
4046 ldq $27, f($29) !literal!5
4047 jsr $26, ($27), f !lituse_jsr!5
4048 ldah $29, 0($26) !gpdisp!3
4049 lda $0, c($29) !gprel
4050 ldah $1, d($29) !gprelhigh
4051 lda $1, d($1) !gprellow
4052 lda $29, 0($29) !gpdisp!3],,
4053 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
4054 [Define if your assembler supports explicit relocations.])])
4055 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
4056 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
4059 ldq $27, a($29) !literal!1
4060 jsr $26, ($27), a !lituse_jsrdirect!1],,
4061 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
4062 [Define if your assembler supports the lituse_jsrdirect relocation.])])
4066 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
4067 [--mlink-relax], [.text],,
4068 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
4069 [Define if your avr assembler supports --mlink-relax option.])])
4071 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
4073 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
4074 [Define if your avr assembler supports -mrmw option.])])
4076 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction],
4077 gcc_cv_as_avr_mgccisr,,
4083 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1,
4084 [Define if your avr assembler supports -mgcc-isr option.])])
4086 # Check how default linker description file implements .rodata for
4087 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to
4088 # RAM so avr-gcc skips __do_copy_data for .rodata objects.
4089 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support)
4090 cat > conftest.s <<EOF
4091 .section .rodata,"a",@progbits
4093 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy".
4098 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o])
4099 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf])
4100 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm])
4101 if test -s conftest.nm
4103 if grep ' R xxvaryy' conftest.nm > /dev/null; then
4105 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1,
4106 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.])
4108 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM)
4109 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD
4110 cat conftest.nm >&AS_MESSAGE_LOG_FD
4111 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`"
4112 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]])
4115 AC_MSG_RESULT(test failed)
4116 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD
4117 cat conftest.s >&AS_MESSAGE_LOG_FD
4118 AC_MSG_WARN([[see `config.log' for details]])
4120 rm -f conftest.s conftest.o conftest.elf conftest.nm
4124 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
4125 gcc_cv_as_cris_no_mul_bug,[2,15,91],
4126 [-no-mul-bug-abort], [.text],,
4127 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
4128 [Define if your assembler supports the -no-mul-bug-abort option.])])
4132 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
4134 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
4135 [Define if your assembler supports -relax option.])])
4137 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
4138 gcc_cv_as_sparc_gotdata_op,,
4145 sethi %gdop_hix22(foo), %g1
4146 xor %g1, %gdop_lox10(foo), %g1
4147 ld [[%l7 + %g1]], %g2, %gdop(foo)],
4148 [if test x$gcc_cv_ld != x \
4149 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4150 if test x$gcc_cv_objdump != x; then
4151 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
4152 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
4153 gcc_cv_as_sparc_gotdata_op=no
4155 gcc_cv_as_sparc_gotdata_op=yes
4160 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
4161 [Define if your assembler and linker support GOTDATA_OP relocs.])])
4163 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
4164 gcc_cv_as_sparc_ua_pcrel,,
4172 .uaword %r_disp32(foo)],
4173 [if test x$gcc_cv_ld != x \
4174 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4175 gcc_cv_as_sparc_ua_pcrel=yes
4178 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
4179 [Define if your assembler and linker support unaligned PC relative relocs.])
4181 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
4182 gcc_cv_as_sparc_ua_pcrel_hidden,,
4187 .uaword %r_disp32(foo)
4188 .byte 0x32, 0x33, 0x34
4193 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4194 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
4195 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
4196 | grep ' 31000000 07323334' > /dev/null 2>&1; then
4197 if $gcc_cv_objdump -R conftest 2> /dev/null \
4198 | grep 'DISP32' > /dev/null 2>&1; then
4201 gcc_cv_as_sparc_ua_pcrel_hidden=yes
4205 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
4206 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
4207 ]) # unaligned pcrel relocs
4209 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
4210 gcc_cv_as_sparc_offsetable_lo10,,
4213 or %g1, %lo(ab) + 12, %g1
4214 or %g1, %lo(ab + 12), %g1],
4215 [if test x$gcc_cv_objdump != x \
4216 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
4217 | grep ' 82106000 82106000' > /dev/null 2>&1; then
4218 gcc_cv_as_sparc_offsetable_lo10=yes
4220 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
4221 [Define if your assembler supports offsetable %lo().])])
4223 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
4224 gcc_cv_as_sparc_fmaf,,
4227 .register %g2, #scratch
4228 .register %g3, #scratch
4230 fmaddd %f0, %f2, %f4, %f6
4231 addxccc %g1, %g2, %g3
4232 fsrl32 %f2, %f4, %f8
4233 fnaddd %f10, %f12, %f14],,
4234 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
4235 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
4237 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
4238 gcc_cv_as_sparc_sparc4,,
4241 .register %g2, #scratch
4242 .register %g3, #scratch
4245 1: cwbneg %g2, %g3, 1f
4248 aes_kexpand0 %f4, %f6, %f8
4249 des_round %f38, %f40, %f42, %f44
4250 camellia_f %f54, %f56, %f58, %f60
4251 kasumi_fi_xor %f46, %f48, %f50, %f52],,
4252 [AC_DEFINE(HAVE_AS_SPARC4, 1,
4253 [Define if your assembler supports SPARC4 instructions.])])
4255 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions],
4256 gcc_cv_as_sparc_sparc5,,
4259 .register %g2, #scratch
4260 .register %g3, #scratch
4263 fpadd8 %f0, %f2, %f4],,
4264 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1,
4265 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])])
4267 gcc_GAS_CHECK_FEATURE([SPARC6 instructions],
4268 gcc_cv_as_sparc_sparc6,,
4271 .register %g2, #scratch
4272 .register %g3, #scratch
4275 fpsll64x %f0, %f2, %f4],,
4276 [AC_DEFINE(HAVE_AS_SPARC6, 1,
4277 [Define if your assembler supports SPARC6 instructions.])])
4279 gcc_GAS_CHECK_FEATURE([LEON instructions],
4280 gcc_cv_as_sparc_leon,,
4283 .register %g2, #scratch
4284 .register %g3, #scratch
4288 casa [[%g2]] 0xb, %g3, %g1],,
4289 [AC_DEFINE(HAVE_AS_LEON, 1,
4290 [Define if your assembler supports LEON instructions.])])
4294 i[34567]86-*-* | x86_64-*-*)
4298 # Full C++ conformance when using a shared libstdc++-v3 requires some
4299 # support from the Cygwin DLL, which in more recent versions exports
4300 # wrappers to aid in interposing and redirecting operators new, delete,
4301 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
4302 # are configuring for a version of Cygwin that exports the wrappers.
4303 if test x$host = x$target && test x$host_cpu = xi686; then
4304 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
4306 # Can't check presence of libc functions during cross-compile, so
4307 # we just have to assume we're building for an up-to-date target.
4308 gcc_ac_cygwin_dll_wrappers=yes
4310 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
4311 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
4312 [Define if you want to generate code by default that assumes that the
4313 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
4316 cygwin* | pe | mingw32*)
4317 # Recent binutils allows the three-operand form of ".comm" on PE. This
4318 # definition is used unconditionally to initialise the default state of
4319 # the target option variable that governs usage of the feature.
4320 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
4321 [2,19,52],,[.comm foo,1,32])
4322 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
4323 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
4324 [Define if your assembler supports specifying the alignment
4325 of objects allocated using the GAS .comm command.])
4326 # Used for DWARF 2 in PE
4327 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
4328 gcc_cv_as_ix86_pe_secrel32,
4334 [if test x$gcc_cv_ld != x \
4335 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
4336 gcc_cv_as_ix86_pe_secrel32=yes
4339 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
4340 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
4341 # Test if the assembler supports the extended form of the .section
4342 # directive that specifies section alignment. LTO support uses this,
4343 # but normally only after installation, so we warn but don't fail the
4344 # configure if LTO is enabled but the assembler does not support it.
4345 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
4346 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
4347 if test x$gcc_cv_as_section_has_align != xyes; then
4348 case ",$enable_languages," in
4350 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
4357 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,,
4358 [-xbrace_comment=no], [.text],,
4359 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1,
4360 [Define if your assembler supports -xbrace_comment option.])])
4362 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
4363 gcc_cv_as_ix86_filds,,,
4364 [filds (%ebp); fists (%ebp)],,
4365 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
4366 [Define if your assembler uses filds and fists mnemonics.])])
4368 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
4369 gcc_cv_as_ix86_fildq,,,
4370 [fildq (%ebp); fistpq (%ebp)],,
4371 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
4372 [Define if your assembler uses fildq and fistq mnemonics.])])
4374 gcc_GAS_CHECK_FEATURE([cmov syntax],
4375 gcc_cv_as_ix86_cmov_sun_syntax,,,
4376 [cmovl.l %edx, %eax],,
4377 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
4378 [Define if your assembler supports the Sun syntax for cmov.])])
4380 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
4381 gcc_cv_as_ix86_ffreep,,,
4383 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
4384 [Define if your assembler supports the ffreep mnemonic.])])
4386 gcc_GAS_CHECK_FEATURE([.quad directive],
4387 gcc_cv_as_ix86_quad,,,
4389 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4390 [Define if your assembler supports the .quad directive.])])
4392 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4393 gcc_cv_as_ix86_sahf,,,
4396 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4397 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4399 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4400 gcc_cv_as_ix86_interunit_movq,,,
4404 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4405 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4406 [Define if your assembler supports interunit movq mnemonic.])
4408 gcc_GAS_CHECK_FEATURE([hle prefixes],
4409 gcc_cv_as_ix86_hle,,,
4410 [lock xacquire cmpxchg %esi, (%ecx)],,
4411 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4412 [Define if your assembler supports HLE prefixes.])])
4414 gcc_GAS_CHECK_FEATURE([swap suffix],
4415 gcc_cv_as_ix86_swap,,,
4416 [movl.s %esp, %ebp],,
4417 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4418 [Define if your assembler supports the swap suffix.])])
4420 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4421 gcc_cv_as_ix86_diff_sect_delta,,,
4429 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4430 [Define if your assembler supports the subtraction of symbols in different sections.])])
4432 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4433 gcc_cv_as_ix86_rep_lock_prefix,,,
4439 lock addl %edi, (%eax,%esi)
4440 lock orl $0, (%esp)],,
4441 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4442 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4444 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4445 gcc_cv_as_ix86_ud2,,,
4447 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4448 [Define if your assembler supports the 'ud2' mnemonic.])])
4450 # Enforce 32-bit output with gas and gld.
4451 if test x$gas = xyes; then
4452 as_ix86_gas_32_opt="--32"
4454 if echo "$ld_ver" | grep GNU > /dev/null; then
4455 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4456 ld_ix86_gld_32_opt="-melf_i386_sol2"
4458 ld_ix86_gld_32_opt="-melf_i386"
4462 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4463 gcc_cv_as_ix86_tlsgdplt,,
4464 [$as_ix86_gas_32_opt],
4465 [call tls_gd@tlsgdplt],
4466 [if test x$gcc_cv_ld != x \
4467 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4468 gcc_cv_as_ix86_tlsgdplt=yes
4471 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4472 [Define if your assembler and linker support @tlsgdplt.])])
4475 .section .tdata,"aw'$tls_section_flag'",@progbits
4477 .section .text,"ax",@progbits
4478 call tls_ld@tlsldmplt'
4480 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4481 gcc_cv_as_ix86_tlsldmplt,,
4482 [$as_ix86_gas_32_opt],
4484 [if test x$gcc_cv_ld != x \
4485 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then
4486 gcc_cv_as_ix86_tlsldmplt=yes
4489 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4490 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4491 [Define to 1 if your assembler and linker support @tlsldmplt.])
4494 .section .text,"ax",@progbits
4496 .type _start, @function
4498 leal value@tlsldm(%ebx), %eax
4499 call ___tls_get_addr@plt
4501 .section .tdata,"aw'$tls_section_flag'",@progbits
4502 .type value, @object
4504 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4505 gcc_cv_as_ix86_tlsldm,,
4506 [$as_ix86_gas_32_opt],
4508 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4509 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4510 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4511 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4512 gcc_cv_as_ix86_tlsldm=yes
4516 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4517 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4518 [Define to 1 if your assembler and linker support @tlsldm.])
4529 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc],
4530 gcc_cv_as_ix86_got32x,,
4531 [$as_ix86_gas_32_opt],
4533 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4534 && test x$gcc_cv_readelf != x \
4535 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
4536 | grep R_386_GOT32X > /dev/null 2>&1 \
4537 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4538 if $gcc_cv_objdump -dw conftest 2>&1 \
4539 | grep 0xffffff > /dev/null 2>&1; then
4540 gcc_cv_as_ix86_got32x=no
4542 gcc_cv_as_ix86_got32x=yes
4546 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X,
4547 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`],
4548 [Define 0/1 if your assembler and linker support @GOT.])
4550 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4551 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4552 [$as_ix86_gas_32_opt],
4558 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4559 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4560 [Define true if the assembler supports '.long foo@GOTOFF'.])
4563 .section .text,"ax",@progbits
4565 .type _start, @function
4567 leal ld@tlsldm(%ecx), %eax
4568 call *___tls_get_addr@GOT(%ecx)
4569 leal gd@tlsgd(%ecx), %eax
4570 call *___tls_get_addr@GOT(%ecx)
4572 .section .tdata,"aw'$tls_section_flag'",@progbits
4580 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT],
4581 gcc_cv_as_ix86_tls_get_addr_via_got,,
4582 [$as_ix86_gas_32_opt],
4584 [if test x$gcc_cv_ld != x \
4585 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then
4586 gcc_cv_as_ix86_tls_get_addr_via_got=yes
4589 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT,
4590 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`],
4591 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.])
4595 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4596 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4598 addl r15 = @ltoffx(x#), gp
4600 ld8.mov r16 = [[r15]], x#
4602 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4603 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4611 gcc_GAS_CHECK_FEATURE([.machine directive support],
4612 gcc_cv_as_machine_directive,,,
4613 [ .machine ppc7400])
4614 if test x$gcc_cv_as_machine_directive != xyes; then
4615 echo "*** This target requires an assembler supporting \".machine\"" >&2
4616 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4617 test x$build = x$target && exit 1
4623 *-*-aix*) conftest_s=' .machine "pwr5"
4626 *-*-darwin*) conftest_s=' .text
4628 *) conftest_s=' .machine power4
4633 gcc_GAS_CHECK_FEATURE([mfcr field support],
4634 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4636 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4637 [Define if your assembler supports mfcr field.])])
4640 *-*-aix*) conftest_s=' .csect .text[[PR]]
4642 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4646 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4647 *) conftest_s=' .text
4649 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4652 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4653 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4655 [AC_DEFINE(HAVE_AS_REL16, 1,
4656 [Define if your assembler supports R_PPC_REL16 relocs.])])
4659 *-*-aix*) conftest_s=' .machine "pwr7"
4662 *) conftest_s=' .machine power7
4667 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4668 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4670 [AC_DEFINE(HAVE_AS_VSX, 1,
4671 [Define if your assembler supports VSX instructions.])])
4673 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4674 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4675 [.gnu_attribute 4,1],,
4676 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4677 [Define if your assembler supports .gnu_attribute.])])
4679 gcc_GAS_CHECK_FEATURE([tls marker support],
4680 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4681 [ bl __tls_get_addr(x@tlsgd)],,
4682 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4683 [Define if your assembler supports arg info for __tls_get_addr.])])
4685 gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4686 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4687 [ .reloc .,R_PPC64_ENTRY; nop],,
4688 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4689 [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4691 gcc_GAS_CHECK_FEATURE([plt sequence marker support],
4692 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings,
4693 [ .reloc .,R_PPC_PLTSEQ; nop],,
4694 [AC_DEFINE(HAVE_AS_PLTSEQ, 1,
4695 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])])
4699 gcc_GAS_CHECK_FEATURE([AIX .ref support],
4700 gcc_cv_as_aix_ref, [2,21,0],,
4701 [ .csect stuff[[rw]]
4707 [AC_DEFINE(HAVE_AS_REF, 1,
4708 [Define if your assembler supports .ref])])
4710 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support],
4711 gcc_cv_as_aix_dwloc, [2,21,0],,
4716 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4717 [Define if your assembler supports AIX debug frame section label reference.])])
4723 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4724 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4725 [ lw $4,%gp_rel(foo)($4)],,
4726 [if test x$target_cpu_default = x
4727 then target_cpu_default=MASK_EXPLICIT_RELOCS
4728 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4731 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4732 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4733 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4734 [Define if the assembler understands -mno-shared.])])
4736 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4737 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4738 [.gnu_attribute 4,1],,
4739 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4740 [Define if your assembler supports .gnu_attribute.])])
4742 gcc_GAS_CHECK_FEATURE([.module support],
4743 gcc_cv_as_mips_dot_module,,[-32],
4746 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4747 [Define if your assembler supports .module.])])
4748 if test x$gcc_cv_as_mips_dot_module = xno \
4749 && test x$with_fp_32 != x; then
4751 [Requesting --with-fp-32= requires assembler support for .module.])
4754 gcc_GAS_CHECK_FEATURE([.micromips support],
4755 gcc_cv_as_micromips_support,,[--fatal-warnings],
4757 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4758 [Define if your assembler supports the .set micromips directive])])
4760 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4761 gcc_cv_as_mips_dtprelword, [2,18,0],,
4762 [.section .tdata,"awT",@progbits
4766 .dtprelword x+0x8000],,
4767 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4768 [Define if your assembler supports .dtprelword.])])
4770 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4771 gcc_cv_as_mips_dspr1_mult,,,
4781 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4782 [Define if your assembler supports DSPR1 mult.])])
4784 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4785 gcc_cv_as_ld_jalr_reloc=no
4786 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4787 if test $in_tree_ld = yes ; then
4788 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4789 && test $in_tree_ld_is_elf = yes; then
4790 gcc_cv_as_ld_jalr_reloc=yes
4792 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4793 echo ' .ent x' > conftest.s
4794 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4795 echo ' lw $25,%call16(y)($28)' >> conftest.s
4796 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4797 echo '1: jalr $25' >> conftest.s
4798 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4799 echo '1: jalr $25' >> conftest.s
4800 echo ' .end x' >> conftest.s
4801 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4802 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4803 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4804 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4805 gcc_cv_as_ld_jalr_reloc=yes
4811 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4812 if test x$target_cpu_default = x; then
4813 target_cpu_default=MASK_RELAX_PIC_CALLS
4815 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4818 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4820 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4821 [gcc_cv_ld_mips_personality_relaxation],
4822 [gcc_cv_ld_mips_personality_relaxation=no
4823 if test $in_tree_ld = yes ; then
4824 if test "$gcc_cv_gld_major_version" -eq 2 \
4825 -a "$gcc_cv_gld_minor_version" -ge 21 \
4826 -o "$gcc_cv_gld_major_version" -gt 2; then
4827 gcc_cv_ld_mips_personality_relaxation=yes
4829 elif test x$gcc_cv_as != x \
4830 -a x$gcc_cv_ld != x \
4831 -a x$gcc_cv_readelf != x ; then
4832 cat > conftest.s <<EOF
4834 .cfi_personality 0x80,indirect_ptr
4841 .section .data,"aw",@progbits
4845 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4846 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4847 if $gcc_cv_readelf -d conftest 2>&1 \
4848 | grep TEXTREL > /dev/null 2>&1; then
4850 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4851 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4854 gcc_cv_ld_mips_personality_relaxation=yes
4858 rm -f conftest.s conftest.o conftest])
4859 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4860 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4861 [Define if your linker can relax absolute .eh_frame personality
4862 pointers into PC-relative form.])
4865 gcc_GAS_CHECK_FEATURE([-mnan= support],
4866 gcc_cv_as_mips_nan,,
4868 [AC_DEFINE(HAVE_AS_NAN, 1,
4869 [Define if the assembler understands -mnan=.])])
4870 if test x$gcc_cv_as_mips_nan = xno \
4871 && test x$with_nan != x; then
4873 [Requesting --with-nan= requires assembler support for -mnan=])
4877 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4878 gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4879 [.gnu_attribute 8,1],,
4880 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4881 [Define if your assembler supports .gnu_attribute.])])
4882 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4883 gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4888 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4889 [Define if your assembler supports .machine and .machinemode.])])
4890 gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4891 gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4892 [ .machine z13+vx ],,
4893 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4894 [Define if your assembler supports architecture modifiers.])])
4895 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints],
4896 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],,
4897 [ vl %v24,0(%r15),3 ],,
4898 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1,
4899 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])])
4904 # Mips and HP-UX need the GNU assembler.
4905 # Linux on IA64 might be able to use the Intel assembler.
4908 mips*-*-* | *-*-hpux* )
4909 if test x$gas_flag = xyes \
4910 || test x"$host" != x"$build" \
4911 || test ! -x "$gcc_cv_as" \
4912 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4915 echo "*** This configuration requires the GNU assembler" >&2
4921 # ??? Not all targets support dwarf2 debug_line, even within a version
4922 # of gas. Moreover, we need to emit a valid instruction to trigger any
4923 # info to the output file. So, as supported targets are added to gas 2.11,
4924 # add some instruction here to (also) show we expect this might work.
4925 # ??? Once 2.11 is released, probably need to add first known working
4926 # version to the per-target configury.
4928 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \
4929 | microblaze | mips | nios2 | pa | riscv | rs6000 | score | sparc | spu \
4930 | tilegx | tilepro | visium | xstormy16 | xtensa)
4940 if test x"$insn" != x; then
4942 .file 1 \"conftest.s\"
4945 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4946 gcc_cv_as_dwarf2_debug_line,
4947 [elf,2,11,0],, [$conftest_s],
4948 [if test x$gcc_cv_objdump != x \
4949 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4950 | grep debug_line > /dev/null 2>&1; then
4951 gcc_cv_as_dwarf2_debug_line=yes
4952 elif test x$gcc_cv_otool != x \
4953 && $gcc_cv_otool -l conftest.o 2> /dev/null \
4954 | grep debug_line > /dev/null 2>&1; then
4955 gcc_cv_as_dwarf2_debug_line=yes
4958 # The .debug_line file table must be in the exact order that
4959 # we specified the files, since these indices are also used
4960 # by DW_AT_decl_file. Approximate this test by testing if
4961 # the assembler bitches if the same index is assigned twice.
4962 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4963 gcc_cv_as_dwarf2_file_buggy,,,
4967 if test $gcc_cv_as_dwarf2_debug_line = yes \
4968 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4969 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4970 [Define if your assembler supports dwarf2 .file/.loc directives,
4971 and preserves file table indices exactly as given.])
4973 if test $gcc_cv_as_leb128 = yes; then
4975 .file 1 \"conftest.s\"
4976 .loc 1 3 0 view .LVU1
4982 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support],
4983 gcc_cv_as_dwarf2_debug_view,
4984 [elf,2,27,0],,[$conftest_s],,
4985 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1,
4986 [Define if your assembler supports views in dwarf2 .loc directives.])])
4990 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4991 gcc_cv_as_gdwarf2_flag,
4992 [elf,2,11,0], [--gdwarf2], [$insn],,
4993 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4994 [Define if your assembler supports the --gdwarf2 option.])])
4996 gcc_GAS_CHECK_FEATURE([--gstabs option],
4997 gcc_cv_as_gstabs_flag,
4998 [elf,2,11,0], [--gstabs], [$insn],,
4999 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
5000 [Define if your assembler supports the --gstabs option.])])
5002 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
5003 gcc_cv_as_debug_prefix_map_flag,
5004 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
5005 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
5006 [Define if your assembler supports the --debug-prefix-map option.])])
5009 gcc_GAS_CHECK_FEATURE([compressed debug sections],
5010 gcc_cv_as_compress_debug,,,,
5011 [# gas compiled without zlib cannot compress debug sections and warns
5012 # about it, but still exits successfully. So check for this, too.
5013 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
5015 gcc_cv_as_compress_debug=0
5016 # Since binutils 2.26, gas supports --compress-debug-sections=type,
5017 # defaulting to the ELF gABI format.
5018 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1
5020 gcc_cv_as_compress_debug=2
5021 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5022 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5023 # Before binutils 2.26, gas only supported --compress-debug-options and
5024 # emitted the traditional GNU format.
5025 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
5027 gcc_cv_as_compress_debug=1
5028 gcc_cv_as_compress_debug_option="--compress-debug-sections"
5029 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
5031 gcc_cv_as_compress_debug=0
5033 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
5034 [Define to the level of your assembler's compressed debug section support.])
5035 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
5036 [Define to the assembler option to enable compressed debug sections.])
5037 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
5038 [Define to the assembler option to disable compressed debug sections.])
5040 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
5043 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
5044 [Define if your assembler supports .lcomm with an alignment field.])])
5046 if test x$with_sysroot = x && test x$host = x$target \
5047 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
5048 && test "$prefix" != "NONE"; then
5049 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
5050 [Define to PREFIX/include if cpp should also search that directory.])
5053 # Determine the version of glibc, if any, used on the target.
5054 AC_MSG_CHECKING([for target glibc version])
5055 AC_ARG_WITH([glibc-version],
5056 [AS_HELP_STRING([--with-glibc-version=M.N],
5057 [assume GCC used with glibc version M.N or later])], [
5058 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
5059 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
5060 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
5062 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
5064 glibc_version_major=0
5065 glibc_version_minor=0
5066 [if test -f $target_header_dir/features.h \
5067 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
5068 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
5069 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
5070 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
5072 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
5073 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
5074 [GNU C Library major version number used on the target, or 0.])
5075 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
5076 [GNU C Library minor version number used on the target, or 0.])
5078 AC_ARG_ENABLE(gnu-unique-object,
5079 [AS_HELP_STRING([--enable-gnu-unique-object],
5080 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
5081 [case $enable_gnu_unique_object in
5083 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
5084 Valid choices are 'yes' and 'no'.]) ;;
5086 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
5088 [.type foo, '$target_type_format_char'gnu_unique_object],,
5089 # We need to unquote above to to use the definition from config.gcc.
5090 # Also check for ld.so support, i.e. glibc 2.11 or higher.
5091 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
5093 if test x$enable_gnu_unique_object = xyes; then
5094 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
5095 [Define if your assembler supports @gnu_unique_object.])
5098 AC_CACHE_CHECK([assembler for tolerance to line number 0],
5099 [gcc_cv_as_line_zero],
5100 [gcc_cv_as_line_zero=no
5101 if test $in_tree_gas = yes; then
5102 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
5103 elif test "x$gcc_cv_as" != x; then
5104 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
5105 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
5106 test "x`cat conftest.out`" = x
5108 gcc_cv_as_line_zero=yes
5110 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
5111 cat conftest.s >&AS_MESSAGE_LOG_FD
5112 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
5113 cat conftest.out >&AS_MESSAGE_LOG_FD
5115 rm -f conftest.o conftest.s conftest.out
5117 if test "x$gcc_cv_as_line_zero" = xyes; then
5118 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
5119 [Define if the assembler won't complain about a line such as # 0 "" 2.])
5122 AC_MSG_CHECKING(support for thin archives)
5123 thin_archive_support=no
5124 echo 'int main (void) { return 0; }' > conftest.c
5125 if ($AR --version | sed 1q | grep "GNU ar" \
5126 && $CC $CFLAGS -c conftest.c \
5127 && $AR rcT conftest.a conftest.o \
5128 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then
5129 thin_archive_support=yes
5131 rm -f conftest.c conftest.o conftest.a conftest
5132 AC_MSG_RESULT($thin_archive_support)
5133 AC_SUBST(thin_archive_support)
5135 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
5136 gcc_cv_ld_eh_frame_hdr=no
5137 if test $in_tree_ld = yes ; then
5138 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
5139 && test $in_tree_ld_is_elf = yes; then
5140 gcc_cv_ld_eh_frame_hdr=yes
5142 elif test x$gcc_cv_ld != x; then
5143 if echo "$ld_ver" | grep GNU > /dev/null; then
5144 # Check if linker supports --eh-frame-hdr option
5145 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then
5146 gcc_cv_ld_eh_frame_hdr=yes
5151 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
5152 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
5153 gcc_cv_ld_eh_frame_hdr=yes
5159 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
5160 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
5161 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
5162 [Define if your linker supports .eh_frame_hdr.])
5164 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
5166 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
5167 gcc_cv_ld_eh_frame_ciev3=no
5168 if test $in_tree_ld = yes ; then
5169 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5170 && test $in_tree_ld_is_elf = yes; then
5171 gcc_cv_ld_eh_frame_ciev3=yes
5173 elif test x$gcc_cv_ld != x; then
5174 if echo "$ld_ver" | grep GNU > /dev/null; then
5175 gcc_cv_ld_eh_frame_ciev3=yes
5176 if test 0"$ld_date" -lt 20040513; then
5177 if test -n "$ld_date"; then
5178 # If there was date string, but was earlier than 2004-05-13, fail
5179 gcc_cv_ld_eh_frame_ciev3=no
5180 elif test "$ld_vers_major" -lt 2; then
5181 gcc_cv_ld_eh_frame_ciev3=no
5182 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
5183 gcc_cv_ld_eh_frame_ciev3=no
5189 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
5190 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
5191 gcc_cv_ld_eh_frame_ciev3=yes
5197 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
5198 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
5199 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
5200 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
5202 AC_MSG_CHECKING(linker position independent executable support)
5204 if test $in_tree_ld = yes ; then
5206 # Full PIE support on Solaris was only introduced in gld 2.26.
5207 *-*-solaris2*) gcc_gld_pie_min_version=26 ;;
5208 *) gcc_gld_pie_min_version=15 ;;
5210 if test "$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 \
5211 && test $in_tree_ld_is_elf = yes; then
5214 elif test x$gcc_cv_ld != x; then
5215 # Check if linker supports -pie option
5216 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then
5220 if echo "$ld_ver" | grep GNU > /dev/null \
5221 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5228 *-*-solaris2.1[[1-9]]*)
5229 # Solaris 11.3 added PIE support.
5230 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
5237 if test x"$gcc_cv_ld_pie" = xyes; then
5238 AC_DEFINE(HAVE_LD_PIE, 1,
5239 [Define if your linker supports PIE option.])
5241 AC_MSG_RESULT($gcc_cv_ld_pie)
5243 AC_MSG_CHECKING(linker PIE support with copy reloc)
5244 gcc_cv_ld_pie_copyreloc=no
5245 if test $gcc_cv_ld_pie = yes ; then
5246 if test $in_tree_ld = yes ; then
5247 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
5248 gcc_cv_ld_pie_copyreloc=yes
5250 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5251 # Check if linker supports -pie option with copy reloc
5253 i?86-*-linux* | x86_64-*-linux*)
5254 cat > conftest1.s <<EOF
5257 .type a_glob, @object
5262 cat > conftest2.s <<EOF
5265 .type main, @function
5267 movl %eax, a_glob(%rip)
5270 .section .data.rel,"aw",@progbits
5275 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5276 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
5277 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5278 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
5279 gcc_cv_ld_pie_copyreloc=yes
5281 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
5286 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
5287 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
5288 [Define 0/1 if your linker supports -pie option with copy reloc.])
5289 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
5291 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
5292 gcc_cv_ld_eh_gc_sections=no
5293 if test $in_tree_ld = yes ; then
5294 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
5295 && test $in_tree_ld_is_elf = yes; then
5296 gcc_cv_ld_eh_gc_sections=yes
5298 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
5299 cat > conftest.s <<EOF
5302 .type _start, @function
5305 .size _start, .-_start
5306 .section .text.foo,"ax",@progbits
5307 .type foo, @function
5311 .section .gcc_except_table.foo,"a",@progbits
5314 .section .eh_frame,"a",@progbits
5317 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5318 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5319 | grep "gc-sections option ignored" > /dev/null; then
5320 gcc_cv_ld_eh_gc_sections=no
5321 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5322 | grep gcc_except_table > /dev/null; then
5323 gcc_cv_ld_eh_gc_sections=yes
5324 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
5325 if test x$gcc_cv_as_comdat_group != xyes; then
5326 gcc_cv_ld_eh_gc_sections=no
5327 cat > conftest.s <<EOF
5330 .type _start, @function
5333 .size _start, .-_start
5334 .section .gnu.linkonce.t.foo,"ax",@progbits
5335 .type foo, @function
5339 .section .gcc_except_table.foo,"a",@progbits
5342 .section .eh_frame,"a",@progbits
5345 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5346 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5347 | grep "gc-sections option ignored" > /dev/null; then
5348 gcc_cv_ld_eh_gc_sections=no
5349 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5350 | grep gcc_except_table > /dev/null; then
5351 gcc_cv_ld_eh_gc_sections=yes
5357 rm -f conftest.s conftest.o conftest
5361 # ??? This apparently exposes a binutils bug with PC-relative relocations.
5362 gcc_cv_ld_eh_gc_sections=no
5365 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5366 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5367 [Define if your linker supports garbage collection of
5368 sections in presence of EH frames.])
5370 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5372 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5373 gcc_cv_ld_eh_gc_sections_bug=no
5374 if test $in_tree_ld = yes ; then
5375 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5376 && test $in_tree_ld_is_elf = yes; then
5377 gcc_cv_ld_eh_gc_sections_bug=yes
5379 elif test x$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
5380 gcc_cv_ld_eh_gc_sections_bug=yes
5381 cat > conftest.s <<EOF
5384 .type _start, @function
5387 .size _start, .-_start
5388 .section .text.startup.foo,"ax",@progbits
5389 .type foo, @function
5393 .section .gcc_except_table.foo,"a",@progbits
5396 .section .eh_frame,"a",@progbits
5399 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5400 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5401 | grep "gc-sections option ignored" > /dev/null; then
5403 elif $gcc_cv_objdump -h conftest 2> /dev/null \
5404 | grep gcc_except_table > /dev/null; then
5405 gcc_cv_ld_eh_gc_sections_bug=no
5408 rm -f conftest.s conftest.o conftest
5410 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5411 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5412 [Define if your linker has buggy garbage collection of
5413 sections support when .text.startup.foo like sections are used.])
5415 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5417 AC_MSG_CHECKING(linker for compressed debug sections)
5418 # gold/gld support compressed debug sections since binutils 2.19/2.21
5419 # In binutils 2.26, gld gained support for the ELF gABI format.
5420 if test $in_tree_ld = yes ; then
5421 gcc_cv_ld_compress_debug=0
5422 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5423 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5424 gcc_cv_ld_compress_debug=2
5425 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5426 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \
5427 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then
5428 gcc_cv_ld_compress_debug=3
5429 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5430 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5431 && test $in_tree_ld_is_elf = yes; then
5432 gcc_cv_ld_compress_debug=1
5434 elif echo "$ld_ver" | grep GNU > /dev/null; then
5435 if test "$ld_vers_major" -lt 2 \
5436 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5437 gcc_cv_ld_compress_debug=0
5438 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
5439 gcc_cv_ld_compress_debug=1
5441 gcc_cv_ld_compress_debug=3
5442 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5444 if test $ld_is_gold = yes; then
5445 gcc_cv_ld_compress_debug=2
5446 gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5452 # Introduced in Solaris 11.2.
5453 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5454 gcc_cv_ld_compress_debug=3
5455 gcc_cv_ld_compress_debug_option="-z compress-sections"
5457 gcc_cv_ld_compress_debug=0
5461 # Assume linkers other than GNU ld don't support compessed debug
5463 gcc_cv_ld_compress_debug=0
5468 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5469 [Define to the level of your linker's compressed debug section support.])
5470 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5471 [Define to the linker option to enable compressed debug sections.])
5472 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5474 if test x"$ld64_flag" = x"yes"; then
5476 # Set defaults for possibly untestable items.
5477 gcc_cv_ld64_export_dynamic=0
5479 if test "$build" = "$host"; then
5485 # On Darwin, because of FAT library support, it is often possible to execute
5486 # exes from compatible archs even when the host differs from the build system.
5487 case "$build","$host" in
5488 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*)
5493 # If the configurer specified a minimum ld64 version to be supported, then use
5494 # that to determine feature support.
5495 if test x"${gcc_cv_ld64_version}" != x; then
5496 AC_MSG_CHECKING(ld64 specified version)
5497 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'`
5498 AC_MSG_RESULT($gcc_cv_ld64_major)
5499 if test "$gcc_cv_ld64_major" -ge 236; then
5500 gcc_cv_ld64_export_dynamic=1
5502 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then
5503 # If the version was not specified, try to find it.
5504 AC_MSG_CHECKING(linker version)
5505 if test x"${gcc_cv_ld64_version}" = x; then
5506 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'`
5508 AC_MSG_RESULT($gcc_cv_ld64_version)
5510 AC_MSG_CHECKING(linker for -export_dynamic support)
5511 gcc_cv_ld64_export_dynamic=1
5512 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then
5513 gcc_cv_ld64_export_dynamic=0
5515 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic)
5518 if test x"${gcc_cv_ld64_version}" != x; then
5519 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}",
5520 [Define to ld64 version.])
5523 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic,
5524 [Define to 1 if ld64 supports '-export_dynamic'.])
5531 AC_CACHE_CHECK(linker --as-needed support,
5532 gcc_cv_ld_as_needed,
5533 [gcc_cv_ld_as_needed=no
5534 gcc_cv_ld_as_needed_option='--as-needed'
5535 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5536 if test $in_tree_ld = yes ; then
5537 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5538 && test $in_tree_ld_is_elf = yes; then
5539 gcc_cv_ld_as_needed=yes
5540 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then
5541 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5542 gcc_cv_ld_no_as_needed_option='--pop-state'
5545 elif test x$gcc_cv_ld != x; then
5546 # Check if linker supports --as-needed and --no-as-needed options
5547 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then
5548 gcc_cv_ld_as_needed=yes
5549 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \
5550 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \
5551 && echo "$ld_ver" | grep GNU > /dev/null \
5552 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then
5553 # Use these options only when both ld.bfd and ld.gold support
5554 # --push-state/--pop-state, which unfortunately wasn't added
5556 gcc_cv_ld_as_needed_option='--push-state --as-needed'
5557 gcc_cv_ld_no_as_needed_option='--pop-state'
5560 case "$target:$gnu_ld" in
5562 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native
5564 gcc_cv_ld_as_needed=yes
5565 gcc_cv_ld_as_needed_option="-z ignore"
5566 gcc_cv_ld_no_as_needed_option="-z record"
5570 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5571 # dl_iterate_phdr, i.e. since Solaris 11.
5573 *-*-solaris2.1[[1-9]]*)
5575 i?86-*-* | x86_64-*-*)
5576 if echo "$ld_ver" | grep GNU > /dev/null; then
5577 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5578 gcc_cv_ld_as_needed=no
5584 gcc_cv_ld_as_needed=no
5588 if test x"$gcc_cv_ld_as_needed" = xyes; then
5589 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5590 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5591 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5592 [Define to the linker option to ignore unused dependencies.])
5593 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5594 [Define to the linker option to keep unused dependencies.])
5597 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5598 saved_LDFLAGS="$LDFLAGS"
5599 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5600 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5601 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
5602 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5604 LDFLAGS="$saved_LDFLAGS"
5605 if test "x$gcc_cv_ld_clearcap" = xyes; then
5606 AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5607 [Define if the linker supports clearing hardware capabilities via mapfile.])
5608 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5610 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5616 emul_name="-melf32lppc"
5619 emul_name="-melf32ppc"
5622 AC_CACHE_CHECK(linker .gnu.attributes long double support,
5624 [gcc_cv_ld_ppc_attr=no
5625 if test x"$ld_is_gold" = xyes; then
5626 gcc_cv_ld_ppc_attr=yes
5627 elif test $in_tree_ld = yes ; then
5628 if test "$gcc_cv_gld_major_version" -eq 2 \
5629 -a "$gcc_cv_gld_minor_version" -ge 28 \
5630 -o "$gcc_cv_gld_major_version" -gt 2; then
5631 gcc_cv_ld_ppc_attr=yes
5633 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5634 # check that merging the long double .gnu_attribute doesn't warn
5635 cat > conftest1.s <<EOF
5638 cat > conftest2.s <<EOF
5641 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5642 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5643 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \
5644 && test ! -s conftest.err; then
5645 gcc_cv_ld_ppc_attr=yes
5647 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s
5650 if test x$gcc_cv_ld_ppc_attr = xyes; then
5651 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1,
5652 [Define if your PowerPC linker has .gnu.attributes long double support.])
5657 case "$target:$tm_file" in
5658 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5661 emul_name="-melf64lppc"
5664 emul_name="-melf64ppc"
5667 emul_name="-melf64ppc_fbsd"
5670 AC_CACHE_CHECK(linker support for omitting dot symbols,
5671 gcc_cv_ld_no_dot_syms,
5672 [gcc_cv_ld_no_dot_syms=no
5673 if test x"$ld_is_gold" = xyes; then
5674 gcc_cv_ld_no_dot_syms=yes
5675 elif test $in_tree_ld = yes ; then
5676 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5677 gcc_cv_ld_no_dot_syms=yes
5679 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5680 cat > conftest1.s <<EOF
5684 cat > conftest2.s <<EOF
5685 .section ".opd","aw"
5690 .quad .LEfoo,.TOC.@tocbase,0
5696 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5697 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5698 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5699 gcc_cv_ld_no_dot_syms=yes
5701 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5704 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5705 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5706 [Define if your PowerPC64 linker only needs function descriptor syms.])
5709 AC_CACHE_CHECK(linker large toc support,
5710 gcc_cv_ld_large_toc,
5711 [gcc_cv_ld_large_toc=no
5712 if test x"$ld_is_gold" = xyes; then
5713 gcc_cv_ld_large_toc=yes
5714 elif test $in_tree_ld = yes ; then
5715 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5716 gcc_cv_ld_large_toc=yes
5718 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5719 cat > conftest.s <<EOF
5720 .section ".tbss","awT",@nobits
5726 addis 9,13,ie0@got@tprel@ha
5727 ld 9,ie0@got@tprel@l(9)
5729 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5730 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5731 gcc_cv_ld_large_toc=yes
5733 rm -f conftest conftest.o conftest.s
5736 if test x"$gcc_cv_ld_large_toc" = xyes; then
5737 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5738 [Define if your PowerPC64 linker supports a large TOC.])
5741 AC_CACHE_CHECK(linker toc pointer alignment,
5742 gcc_cv_ld_toc_align,
5743 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5744 cat > conftest.s <<EOF
5749 .section .data.rel.ro,"aw",@progbits
5754 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5755 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5756 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5758 rm -f conftest conftest.o conftest.s
5761 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5762 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5763 [Define to .TOC. alignment forced by your linker.])
5770 AC_CACHE_CHECK(linker large toc support,
5771 gcc_cv_ld_large_toc,
5772 [gcc_cv_ld_large_toc=no
5773 if test x$gcc_cv_as != x ; then
5774 cat > conftest.s <<EOF
5784 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5785 gcc_cv_ld_large_toc=yes
5787 rm -f conftest conftest.o conftest.s
5790 if test x"$gcc_cv_ld_large_toc" = xyes; then
5791 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5792 [Define if your PowerPC64 linker supports a large TOC.])
5797 AC_CACHE_CHECK(linker --build-id support,
5799 [gcc_cv_ld_buildid=no
5800 if test $in_tree_ld = yes ; then
5801 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5802 "$gcc_cv_gld_minor_version" -ge 18 -o \
5803 "$gcc_cv_gld_major_version" -gt 2 \
5804 && test $in_tree_ld_is_elf = yes; then
5805 gcc_cv_ld_buildid=yes
5807 elif test x$gcc_cv_ld != x; then
5808 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then
5809 gcc_cv_ld_buildid=yes
5812 if test x"$gcc_cv_ld_buildid" = xyes; then
5813 AC_DEFINE(HAVE_LD_BUILDID, 1,
5814 [Define if your linker supports --build-id.])
5817 AC_ARG_ENABLE(linker-build-id,
5818 [AS_HELP_STRING([--enable-linker-build-id],
5819 [compiler will always pass --build-id to linker])],
5821 enable_linker_build_id=no)
5823 if test x"$enable_linker_build_id" = xyes; then
5824 if test x"$gcc_cv_ld_buildid" = xyes; then
5825 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5826 [Define if gcc should always pass --build-id to linker.])
5828 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5832 # In binutils 2.21, GNU ld gained support for new emulations fully
5833 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5834 AC_CACHE_CHECK(linker *_sol2 emulation support,
5835 gcc_cv_ld_sol2_emulation,
5836 [gcc_cv_ld_sol2_emulation=no
5837 if test $in_tree_ld = yes ; then
5838 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5839 "$gcc_cv_gld_minor_version" -ge 21 -o \
5840 "$gcc_cv_gld_major_version" -gt 2 \
5841 && test $in_tree_ld_is_elf = yes; then
5842 gcc_cv_ld_sol2_emulation=yes
5844 elif test x$gcc_cv_ld != x; then
5845 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5846 grep _sol2 > /dev/null; then
5847 gcc_cv_ld_sol2_emulation=yes
5850 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5851 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5852 [Define if your linker supports the *_sol2 emulations.])
5855 AC_CACHE_CHECK(linker --sysroot support,
5857 [gcc_cv_ld_sysroot=no
5858 if test $in_tree_ld = yes ; then
5859 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5860 gcc_cv_ld_sysroot=yes
5862 elif test x$gcc_cv_ld != x; then
5863 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then
5864 gcc_cv_ld_sysroot=yes
5867 if test x"$gcc_cv_ld_sysroot" = xyes; then
5868 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5869 [Define if your linker supports --sysroot.])
5874 # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5875 AC_CACHE_CHECK([system-provided CRTs on Solaris],
5876 gcc_cv_solaris_crts,
5877 [gcc_cv_solaris_crts=no
5878 if test x$host != x$target; then
5879 if test "x$with_sysroot" = xyes; then
5880 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5882 target_sysroot="${with_sysroot}"
5885 target_libdir="$target_sysroot/usr/lib"
5886 # At the time they were added, gcrt1.o became a symlink for backwards
5887 # compatibility on x86, while crt1.o was added on sparc, so check for that.
5889 i?86-*-solaris2* | x86_64-*-solaris2*)
5890 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5893 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5898 if test x$gcc_cv_solaris_crts = xyes; then
5899 AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5900 [Define if the system-provided CRTs are present on Solaris.])
5903 AC_ARG_ENABLE(libssp,
5904 [AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
5905 [case "${enableval}" in
5909 AC_MSG_ERROR([unknown libssp setting $enableval])
5913 # Test for stack protector support in target C library.
5914 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5915 gcc_cv_libc_provides_ssp,
5916 [gcc_cv_libc_provides_ssp=no
5917 if test "x$enable_libssp" = "xno"; then
5918 gcc_cv_libc_provides_ssp=yes
5919 elif test "x$enable_libssp" = "xyes"; then
5920 gcc_cv_libc_provides_ssp=no
5924 # All versions of musl provide stack protector
5925 gcc_cv_libc_provides_ssp=yes;;
5926 *-*-linux* | *-*-kfreebsd*-gnu)
5927 # glibc 2.4 and later provides __stack_chk_fail and
5928 # either __stack_chk_guard, or TLS access to stack guard canary.
5929 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5930 [if test -f $target_header_dir/features.h \
5931 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5932 $target_header_dir/features.h > /dev/null; then
5933 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5934 $target_header_dir/features.h > /dev/null && \
5935 test -f $target_header_dir/bits/uClibc_config.h && \
5936 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5937 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5938 gcc_cv_libc_provides_ssp=yes
5940 # all versions of Bionic support stack protector
5941 elif test -f $target_header_dir/sys/cdefs.h \
5942 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5943 $target_header_dir/sys/cdefs.h > /dev/null; then
5944 gcc_cv_libc_provides_ssp=yes
5948 # Avoid complicated tests (see
5949 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5950 # simply assert that glibc does provide this, which is true for all
5951 # realistically usable GNU/Hurd configurations.
5952 # All supported versions of musl provide it as well
5953 gcc_cv_libc_provides_ssp=yes;;
5954 *-*-darwin* | *-*-freebsd* | *-*-netbsd*)
5955 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5956 [echo "no __stack_chk_fail on this target"])
5958 *) gcc_cv_libc_provides_ssp=no ;;
5962 if test x$gcc_cv_libc_provides_ssp = xyes; then
5963 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5964 [Define if your target C library provides stack protector support])
5967 # Check whether --enable-default-ssp was given.
5968 AC_ARG_ENABLE(default-ssp,
5969 [AS_HELP_STRING([--enable-default-ssp],
5970 [enable Stack Smashing Protection as default])],[
5971 if test x$gcc_cv_libc_provides_ssp = xyes; then
5973 ia64*-*-*) enable_default_ssp=no ;;
5974 *) enable_default_ssp=$enableval ;;
5977 enable_default_ssp=no
5979 enable_default_ssp=no)
5980 if test x$enable_default_ssp = xyes ; then
5981 AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5982 [Define if your target supports default stack protector and it is enabled.])
5984 AC_SUBST([enable_default_ssp])
5986 # Test for <sys/sdt.h> on the target.
5987 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5988 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5990 if test -f $target_header_dir/sys/sdt.h; then
5992 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5993 [Define if your target C library provides sys/sdt.h])
5995 AC_MSG_RESULT($have_sys_sdt_h)
5997 # Check if TFmode long double should be used by default or not.
5998 # Some glibc targets used DFmode long double, but with glibc 2.4
5999 # and later they can use TFmode.
6001 powerpc*-*-linux* | \
6005 AC_ARG_WITH(long-double-128,
6006 [AS_HELP_STRING([--with-long-double-128],
6007 [use 128-bit long double by default])],
6008 gcc_cv_target_ldbl128="$with_long_double_128",
6009 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
6010 [gcc_cv_target_ldbl128=no
6011 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
6012 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
6013 && gcc_cv_target_ldbl128=yes
6017 if test x$gcc_cv_target_ldbl128 = xyes; then
6018 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
6019 [Define if TFmode long double should be the default])
6022 # Check if TFmode long double target should use the IBM extended double or IEEE
6023 # 128-bit floating point formats if long doubles are 128-bits long. The long
6024 # double type can only be switched on powerpc64 bit Linux systems where VSX is
6025 # supported. Other PowerPC systems do not build the IEEE 128-bit emulator in
6027 AC_ARG_WITH([long-double-format],
6028 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}]
6029 [Specify whether PowerPC long double uses IEEE or IBM format])],[
6030 case "$target:$with_long_double_format" in
6031 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm)
6034 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm)
6035 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems
6037 power7 | power8 | power9 | power1*)
6041 AC_MSG_ERROR([Configuration option --with-long-double-format is only \
6042 supported if the default cpu is power7 or newer])
6043 with_long_double_format=""
6047 xpowerpc64*-*-linux*:*)
6048 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee])
6049 with_long_double_format=""
6052 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \
6053 on 64-bit PowerPC VSX Linux systems])
6054 with_long_double_format=""
6059 # Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP
6060 # values in the TCB. Currently, only GLIBC 2.23 and later support this.
6061 gcc_cv_libc_provides_hwcap_in_tcb=no
6064 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], )
6067 if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
6068 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1,
6069 [Define if your target C Library provides the AT_HWCAP value in the TCB])
6072 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
6073 gcc_cv_target_dl_iterate_phdr=unknown
6075 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
6076 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
6077 # libdl there, both complicating its use and breaking compatibility
6078 # between Solaris 10 updates.
6079 *-*-solaris2.1[[1-9]]*)
6080 # <link.h> needs both a dl_iterate_phdr declaration and support for
6081 # compilation with largefile support.
6082 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
6083 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
6084 gcc_cv_target_dl_iterate_phdr=yes
6086 gcc_cv_target_dl_iterate_phdr=no
6089 *-*-dragonfly* | *-*-freebsd*)
6090 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
6091 gcc_cv_target_dl_iterate_phdr=yes
6093 gcc_cv_target_dl_iterate_phdr=no
6097 gcc_cv_target_dl_iterate_phdr=yes
6100 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
6101 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
6102 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
6103 [Define if your target C library provides the `dl_iterate_phdr' function.])
6105 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
6107 # We no longer support different GC mechanisms. Emit an error if
6108 # the user configures with --with-gc.
6110 [AS_HELP_STRING([--with-gc={page,zone}],
6111 [this option is not supported anymore. It used to choose
6112 the garbage collection mechanism to use with the compiler])],
6113 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
6116 # Libraries to use on the host. This will normally be set by the top
6117 # level Makefile. Here we simply capture the value for our Makefile.
6118 if test -z "${HOST_LIBS+set}"; then
6123 # Use the system's zlib library.
6126 dnl Very limited version of automake's enable-maintainer-mode
6128 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
6129 dnl maintainer-mode is disabled by default
6130 AC_ARG_ENABLE(maintainer-mode,
6131 [AS_HELP_STRING([--enable-maintainer-mode],
6132 [enable make rules and dependencies not useful
6133 (and sometimes confusing) to the casual installer])],
6134 maintainer_mode=$enableval,
6137 AC_MSG_RESULT($maintainer_mode)
6139 if test "$maintainer_mode" = "yes"; then
6146 dnl Whether to prevent multiple front-ends from linking at the same time
6148 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
6149 AC_ARG_ENABLE(link-mutex,
6150 [AS_HELP_STRING([--enable-link-mutex],
6151 [avoid linking multiple front-ends at once to avoid thrashing
6152 on the build machine])],
6153 do_link_mutex=$enableval,
6155 AC_MSG_RESULT($do_link_mutex)
6157 if test "$do_link_mutex" = "yes"; then
6162 AC_SUBST(DO_LINK_MUTEX)
6168 # Make empty files to contain the specs and options for each language.
6169 # Then add #include lines to for a compiler that has specs and/or options.
6175 # These (without "all_") are set in each config-lang.in.
6176 # `language' must be a single word so is spelled singularly.
6179 all_outputs='Makefile'
6180 # List of language makefile fragments.
6182 # Additional files for gengtype
6183 all_gtfiles="$target_gtfiles"
6185 # These are the languages that are set in --enable-languages,
6186 # and are available in the GCC tree.
6187 all_selected_languages=
6189 # Add the language fragments.
6190 # Languages are added via two mechanisms. Some information must be
6191 # recorded in makefile variables, these are defined in config-lang.in.
6192 # We accumulate them and plug them into the main Makefile.
6193 # The other mechanism is a set of hooks for each of the main targets
6194 # like `clean', `install', etc.
6196 language_hooks="Make-hooks"
6198 for lang in ${srcdir}/*/config-lang.in
6201 test "$lang" = "${srcdir}/*/config-lang.in" && continue
6203 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
6204 if test "x$lang_alias" = x
6206 echo "$lang doesn't set \$language." 1>&2
6209 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
6210 subdirs="$subdirs $subdir"
6212 # $gcc_subdir is where the gcc integration files are to be found
6213 # for a language, both for internal compiler purposes (compiler
6214 # sources implementing front-end to GCC tree converters), and for
6215 # build infrastructure purposes (Make-lang.in, etc.)
6217 # This will be <subdir> (relative to $srcdir) if a line like
6218 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
6219 # is found in <langdir>/config-lang.in, and will remain <langdir>
6222 # Except for the language alias (fetched above), the regular
6223 # "config-lang.in" contents are always retrieved from $gcc_subdir,
6224 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
6225 # only this and the language alias.
6227 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
6228 if [ "$gcc_subdir" = "" ]; then
6229 gcc_subdir="$subdir"
6232 case ",$enable_languages," in
6234 all_selected_languages="$all_selected_languages $lang_alias"
6235 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
6236 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
6248 . ${srcdir}/$gcc_subdir/config-lang.in
6249 if test "x$language" = x
6251 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
6256 case ",$enable_languages," in
6259 for i in $subdir_requires; do
6260 test -f "${srcdir}/$i/config-lang.in" && continue
6268 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
6269 if test -f $srcdir/$gcc_subdir/lang.opt; then
6270 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
6271 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
6273 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
6274 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
6276 all_languages="$all_languages $language"
6277 all_compilers="$all_compilers $compilers"
6278 all_outputs="$all_outputs $outputs"
6279 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
6280 case ",$enable_languages," in
6282 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
6284 AC_SUBST(enable_lto)
6291 for language in $all_selected_languages
6293 check_languages="$check_languages check-$language"
6297 for language in $all_selected_languages
6299 selftest_languages="$selftest_languages selftest-$language"
6302 # We link each language in with a set of hooks, reached indirectly via
6303 # lang.${target}. Only do so for selected languages.
6307 target_list="all.cross start.encap rest.encap tags \
6308 install-common install-man install-info install-pdf install-html dvi \
6309 pdf html uninstall info man srcextra srcman srcinfo \
6310 mostlyclean clean distclean maintainer-clean install-plugin"
6312 for t in $target_list
6315 for lang in $all_selected_languages
6319 echo "lang.$t: $x" >> Make-hooks
6323 # Option include files
6326 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
6327 option_includes="option-includes.mk"
6328 AC_SUBST_FILE(option_includes)
6336 echo "dir ." > .gdbinit
6337 echo "dir ${srcdir}" >> .gdbinit
6338 if test x$gdb_needs_out_file_path = xyes
6340 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
6342 if test "x$subdirs" != x; then
6345 echo "dir ${srcdir}/$s" >> .gdbinit
6348 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
6349 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
6351 # Put a breakpoint on __asan_report_error to help with debugging buffer
6354 *-fsanitize=address*)
6355 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
6359 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
6360 AC_SUBST(gcc_tooldir)
6363 # Find a directory in which to install a shared libgcc.
6365 AC_ARG_ENABLE(version-specific-runtime-libs,
6366 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
6367 [specify that runtime libraries should be
6368 installed in a compiler-specific directory])])
6370 # Substitute configuration variables
6373 AC_SUBST(all_compilers)
6374 AC_SUBST(all_gtfiles)
6375 AC_SUBST(all_lang_makefrags)
6376 AC_SUBST(all_languages)
6377 AC_SUBST(all_selected_languages)
6378 AC_SUBST(build_exeext)
6379 AC_SUBST(build_install_headers_dir)
6380 AC_SUBST(build_xm_file_list)
6381 AC_SUBST(build_xm_include_list)
6382 AC_SUBST(build_xm_defines)
6383 AC_SUBST(build_file_translate)
6384 AC_SUBST(check_languages)
6385 AC_SUBST(selftest_languages)
6386 AC_SUBST(cpp_install_dir)
6387 AC_SUBST(xmake_file)
6388 AC_SUBST(tmake_file)
6389 AC_SUBST(TM_ENDIAN_CONFIG)
6390 AC_SUBST(TM_MULTILIB_CONFIG)
6391 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
6392 AC_SUBST(extra_gcc_objs)
6393 AC_SUBST(user_headers_inc_next_pre)
6394 AC_SUBST(user_headers_inc_next_post)
6395 AC_SUBST(extra_headers_list)
6396 AC_SUBST(extra_objs)
6397 AC_SUBST(extra_programs)
6398 AC_SUBST(float_h_file)
6399 AC_SUBST(gcc_config_arguments)
6400 AC_SUBST(gcc_gxx_include_dir)
6401 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
6402 AC_SUBST(host_exeext)
6403 AC_SUBST(host_xm_file_list)
6404 AC_SUBST(host_xm_include_list)
6405 AC_SUBST(host_xm_defines)
6406 AC_SUBST(out_host_hook_obj)
6408 AC_SUBST(lang_opt_files)
6409 AC_SUBST(lang_specs_files)
6410 AC_SUBST(lang_tree_files)
6411 AC_SUBST(local_prefix)
6413 AC_SUBST(objc_boehm_gc)
6415 AC_SUBST(out_object_file)
6416 AC_SUBST(common_out_file)
6417 AC_SUBST(common_out_object_file)
6418 AC_SUBST(tm_file_list)
6419 AC_SUBST(tm_include_list)
6420 AC_SUBST(tm_defines)
6421 AC_SUBST(tm_p_file_list)
6422 AC_SUBST(tm_p_include_list)
6423 AC_SUBST(tm_d_file_list)
6424 AC_SUBST(tm_d_include_list)
6425 AC_SUBST(xm_file_list)
6426 AC_SUBST(xm_include_list)
6427 AC_SUBST(xm_defines)
6428 AC_SUBST(use_gcc_stdint)
6429 AC_SUBST(c_target_objs)
6430 AC_SUBST(cxx_target_objs)
6431 AC_SUBST(fortran_target_objs)
6432 AC_SUBST(d_target_objs)
6433 AC_SUBST(target_cpu_default)
6435 AC_SUBST_FILE(language_hooks)
6438 if test x${build} = x${host} ; then
6439 if test x${host} = x${target} ; then
6440 echo "Links are now set up to build a native compiler for ${target}." 1>&2
6442 echo "Links are now set up to build a cross-compiler" 1>&2
6443 echo " from ${host} to ${target}." 1>&2
6446 if test x${host} = x${target} ; then
6447 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
6448 echo " for ${target}." 1>&2
6450 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
6451 echo " from ${host} to ${target}." 1>&2
6455 AC_ARG_VAR(GMPLIBS,[How to link GMP])
6456 AC_ARG_VAR(GMPINC,[How to find GMP include files])
6458 AC_ARG_VAR(ISLLIBS,[How to link isl])
6459 AC_ARG_VAR(ISLINC,[How to find isl include files])
6460 if test "x${ISLLIBS}" != "x" ; then
6461 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
6465 AC_SUBST(pluginlibs)
6466 AC_SUBST(enable_plugin)
6467 if test x"$enable_plugin" = x"yes"; then
6468 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
6472 # Enable --enable-host-shared
6473 AC_ARG_ENABLE(host-shared,
6474 [AS_HELP_STRING([--enable-host-shared],
6475 [build host code as shared libraries])],
6476 [PICFLAG=-fPIC], [PICFLAG=])
6477 AC_SUBST(enable_host_shared)
6481 AC_ARG_ENABLE(libquadmath-support,
6482 [AS_HELP_STRING([--disable-libquadmath-support],
6483 [disable libquadmath support for Fortran])],
6484 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
6485 ENABLE_LIBQUADMATH_SUPPORT=yes)
6486 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
6487 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
6488 [Define to 1 to enable libquadmath support])
6492 # Specify what hash style to use by default.
6493 AC_ARG_WITH([linker-hash-style],
6494 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
6495 [specify the linker hash style])],
6496 [case x"$withval" in
6498 LINKER_HASH_STYLE=sysv
6501 LINKER_HASH_STYLE=gnu
6504 LINKER_HASH_STYLE=both
6507 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
6510 [LINKER_HASH_STYLE=''])
6511 if test x"${LINKER_HASH_STYLE}" != x; then
6512 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
6513 [The linker hash style])
6516 # Specify what should be the default of -fdiagnostics-color option.
6517 AC_ARG_WITH([diagnostics-color],
6518 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
6519 [specify the default of -fdiagnostics-color option
6520 auto-if-env stands for -fdiagnostics-color=auto if
6521 GCC_COLOR environment variable is present and
6522 -fdiagnostics-color=never otherwise])],
6523 [case x"$withval" in
6525 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6528 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6531 DIAGNOSTICS_COLOR_DEFAULT=-1
6534 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6537 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6540 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6541 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6542 [The default for -fdiagnostics-color option])
6544 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6545 # of jit/jit-playback.c.
6546 gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"`
6547 echo "gcc_driver_version: ${gcc_driver_version}"
6548 cat > gcc-driver-name.h <<EOF
6549 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}"
6552 # Check whether --enable-default-pie was given.
6553 AC_ARG_ENABLE(default-pie,
6554 [AS_HELP_STRING([--enable-default-pie],
6555 [enable Position Independent Executable as default])],
6556 enable_default_pie=$enableval,
6557 enable_default_pie=no)
6558 if test x$enable_default_pie = xyes ; then
6559 AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6560 [Define if your target supports default PIE and it is enabled.])
6562 AC_SUBST([enable_default_pie])
6564 # Check if -fno-PIE works.
6565 AC_CACHE_CHECK([for -fno-PIE option],
6567 [saved_CXXFLAGS="$CXXFLAGS"
6568 CXXFLAGS="$CXXFLAGS -fno-PIE"
6569 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6570 [gcc_cv_c_no_fpie=yes],
6571 [gcc_cv_c_no_fpie=no])
6572 CXXFLAGS="$saved_CXXFLAGS"])
6573 if test "$gcc_cv_c_no_fpie" = "yes"; then
6574 NO_PIE_CFLAGS="-fno-PIE"
6576 AC_SUBST([NO_PIE_CFLAGS])
6578 # Check if -no-pie works.
6579 AC_CACHE_CHECK([for -no-pie option],
6581 [saved_LDFLAGS="$LDFLAGS"
6582 LDFLAGS="$LDFLAGS -no-pie"
6583 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])],
6584 [gcc_cv_no_pie=yes],
6586 LDFLAGS="$saved_LDFLAGS"])
6587 if test "$gcc_cv_no_pie" = "yes"; then
6588 NO_PIE_FLAG="-no-pie"
6590 AC_SUBST([NO_PIE_FLAG])
6592 # Check linker supports '-z bndplt'
6593 ld_bndplt_support=no
6594 AC_MSG_CHECKING(linker -z bndplt option)
6595 if test x"$ld_is_gold" = xno; then
6596 if test $in_tree_ld = yes ; then
6597 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6598 ld_bndplt_support=yes
6600 elif test x$gcc_cv_ld != x; then
6601 # Check if linker supports -a bndplt option
6602 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then
6603 ld_bndplt_support=yes
6607 if test x"$ld_bndplt_support" = xyes; then
6608 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6609 [Define if your linker supports -z bndplt])
6611 AC_MSG_RESULT($ld_bndplt_support)
6613 # Check linker supports '--push-state'/'--pop-state'
6614 ld_pushpopstate_support=no
6615 AC_MSG_CHECKING(linker --push-state/--pop-state options)
6616 if test x"$ld_is_gold" = xno; then
6617 if test $in_tree_ld = yes ; then
6618 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6619 ld_pushpopstate_support=yes
6621 elif test x$gcc_cv_ld != x; then
6622 # Check if linker supports --push-state/--pop-state options
6623 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then
6624 ld_pushpopstate_support=yes
6628 if test x"$ld_pushpopstate_support" = xyes; then
6629 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1,
6630 [Define if your linker supports --push-state/--pop-state])
6632 AC_MSG_RESULT($ld_pushpopstate_support)
6634 # Configure the subdirectories
6635 # AC_CONFIG_SUBDIRS($subdirs)
6637 # Create the Makefile
6638 # and configure language subdirectories
6639 AC_CONFIG_FILES($all_outputs)
6641 AC_CONFIG_COMMANDS([default],
6643 case ${CONFIG_HEADERS} in
6644 *auto-host.h:config.in*)
6647 # Make sure all the subdirs exist.
6648 for d in $subdirs doc build common c-family
6650 test -d $d || mkdir $d
6653 [subdirs='$subdirs'])