2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
282 ACX_PROG_GNAT([-I"$srcdir"/ada])
284 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
285 # optimizations to be activated explicitly by the toplevel.
288 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
289 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
294 # Determine PICFLAG for target gnatlib.
295 GCC_PICFLAG_FOR_TARGET
296 AC_SUBST(PICFLAG_FOR_TARGET)
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
308 # sizeof(char) is 1 by definition.
309 AC_CHECK_SIZEOF(void *)
310 AC_CHECK_SIZEOF(short)
312 AC_CHECK_SIZEOF(long)
313 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
314 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
317 # ---------------------
318 # Warnings and checking
319 # ---------------------
321 # Check $CC warning features (if it's GCC).
322 # We want to use -pedantic, but we don't want warnings about
326 # * C++11 narrowing conversions in { }
327 # So, we only use -pedantic if we can disable those warnings.
329 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
330 AC_ARG_ENABLE(build-format-warnings,
331 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
332 [],[enable_build_format_warnings=yes])
333 AS_IF([test $enable_build_format_warnings = no],
334 [wf_opt=-Wno-format],[wf_opt=])
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
344 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
345 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
346 [-Wno-overlength-strings])), [strict_warn])
347 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
349 # The above macros do nothing if the compiler is not GCC. However, the
350 # Makefile has more goo to add other flags, so these variables are used
351 # to enable warnings only for GCC.
354 if test "x$GCC" = "xyes"; then
355 warn_cflags='$(GCC_WARN_CFLAGS)'
356 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
358 AC_SUBST(warn_cflags)
359 AC_SUBST(warn_cxxflags)
361 # Disable exceptions and RTTI if building with g++
362 ACX_PROG_CC_WARNING_OPTS(
363 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
366 # Enable expensive internal checks
368 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
372 AC_ARG_ENABLE(checking,
373 [AS_HELP_STRING([[--enable-checking[=LIST]]],
374 [enable expensive run-time checks. With LIST,
375 enable only specific categories of checks.
376 Categories are: yes,no,all,none,release.
377 Flags are: assert,df,fold,gc,gcac,gimple,misc,
378 rtlflag,rtl,runtime,tree,valgrind,types])],
379 [ac_checking_flags="${enableval}"],[
380 # Determine the default checks.
381 if test x$is_release = x ; then
382 ac_checking_flags=yes
384 ac_checking_flags=release
386 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
387 for check in release $ac_checking_flags
390 # these set all the flags to specific states
391 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking=1 ;
393 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
394 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
395 ac_tree_checking=1 ; ac_valgrind_checking= ;
396 ac_types_checking=1 ;;
397 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
398 ac_fold_checking= ; ac_gc_checking= ;
399 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
400 ac_rtlflag_checking= ; ac_runtime_checking= ;
401 ac_tree_checking= ; ac_valgrind_checking= ;
402 ac_types_checking= ;;
403 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
404 ac_fold_checking=1 ; ac_gc_checking=1 ;
405 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
406 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
407 ac_tree_checking=1 ; ac_valgrind_checking= ;
408 ac_types_checking=1 ;;
409 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
410 ac_fold_checking= ; ac_gc_checking= ;
411 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
412 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
413 ac_tree_checking= ; ac_valgrind_checking= ;
414 ac_types_checking= ;;
415 # these enable particular checks
416 assert) ac_assert_checking=1 ;;
417 df) ac_df_checking=1 ;;
418 fold) ac_fold_checking=1 ;;
419 gc) ac_gc_checking=1 ;;
420 gcac) ac_gc_always_collect=1 ;;
421 gimple) ac_gimple_checking=1 ;;
422 misc) ac_checking=1 ;;
423 rtl) ac_rtl_checking=1 ;;
424 rtlflag) ac_rtlflag_checking=1 ;;
425 runtime) ac_runtime_checking=1 ;;
426 tree) ac_tree_checking=1 ;;
427 types) ac_types_checking=1 ;;
428 valgrind) ac_valgrind_checking=1 ;;
429 *) AC_MSG_ERROR(unknown check category $check) ;;
435 if test x$ac_checking != x ; then
436 AC_DEFINE(ENABLE_CHECKING, 1,
437 [Define if you want more run-time sanity checks. This one gets a grab
438 bag of miscellaneous but relatively cheap checks.])
439 nocommon_flag=-fno-common
441 AC_SUBST(nocommon_flag)
442 if test x$ac_df_checking != x ; then
443 AC_DEFINE(ENABLE_DF_CHECKING, 1,
444 [Define if you want more run-time sanity checks for dataflow.])
446 if test x$ac_assert_checking != x ; then
447 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
448 [Define if you want assertions enabled. This is a cheap check.])
450 if test x$ac_gimple_checking != x ; then
451 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
452 [Define if you want operations on GIMPLE (the basic data structure of
453 the high-level optimizers) to be checked for dynamic type safety at
454 runtime. This is moderately expensive.])
456 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
457 if test x$ac_runtime_checking != x ; then
458 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
459 [Define if you want runtime assertions enabled. This is a cheap check.])
461 if test x$ac_tree_checking != x ; then
462 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
463 [Define if you want all operations on trees (the basic data
464 structure of the front ends) to be checked for dynamic type safety
465 at runtime. This is moderately expensive. The tree browser debugging
466 routines will also be enabled by this option.
468 TREEBROWSER=tree-browser.o
471 if test x$ac_types_checking != x ; then
472 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
473 [Define if you want all gimple types to be verified after gimplifiation.
477 AC_SUBST(TREEBROWSER)
478 AC_SUBST(TREECHECKING)
479 if test x$ac_rtl_checking != x ; then
480 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
481 [Define if you want all operations on RTL (the basic data structure
482 of the optimizer and back end) to be checked for dynamic type safety
483 at runtime. This is quite expensive.])
485 if test x$ac_rtlflag_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
487 [Define if you want RTL flag accesses to be checked against the RTL
488 codes that are supported for each access macro. This is relatively
491 if test x$ac_gc_checking != x ; then
492 AC_DEFINE(ENABLE_GC_CHECKING, 1,
493 [Define if you want the garbage collector to do object poisoning and
494 other memory allocation checks. This is quite expensive.])
496 if test x$ac_gc_always_collect != x ; then
497 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
498 [Define if you want the garbage collector to operate in maximally
499 paranoid mode, validating the entire heap and collecting garbage at
500 every opportunity. This is extremely expensive.])
502 if test x$ac_fold_checking != x ; then
503 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
504 [Define if you want fold checked that it never destructs its argument.
505 This is quite expensive.])
507 valgrind_path_defines=
510 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
511 dnl # an if statement. This was the source of very frustrating bugs
512 dnl # in converting to autoconf 2.5x!
513 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
515 if test x$ac_valgrind_checking != x ; then
516 # It is certainly possible that there's valgrind but no valgrind.h.
517 # GCC relies on making annotations so we must have both.
518 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
519 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
520 [[#include <valgrind/memcheck.h>
521 #ifndef VALGRIND_DISCARD
522 #error VALGRIND_DISCARD not defined
524 [gcc_cv_header_valgrind_memcheck_h=yes],
525 [gcc_cv_header_valgrind_memcheck_h=no])
526 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
527 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
528 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
529 [[#include <memcheck.h>
530 #ifndef VALGRIND_DISCARD
531 #error VALGRIND_DISCARD not defined
533 [gcc_cv_header_memcheck_h=yes],
534 [gcc_cv_header_memcheck_h=no])
535 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
536 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
537 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
538 if test "x$valgrind_path" = "x" \
539 || (test $have_valgrind_h = no \
540 && test $gcc_cv_header_memcheck_h = no \
541 && test $gcc_cv_header_valgrind_memcheck_h = no); then
542 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
544 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
545 valgrind_command="$valgrind_path -q"
546 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
547 [Define if you want to run subprograms and generated programs
548 through valgrind (a memory checker). This is extremely expensive.])
549 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
550 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
551 [Define if valgrind's valgrind/memcheck.h header is installed.])
553 if test $gcc_cv_header_memcheck_h = yes; then
554 AC_DEFINE(HAVE_MEMCHECK_H, 1,
555 [Define if valgrind's memcheck.h header is installed.])
558 AC_SUBST(valgrind_path_defines)
559 AC_SUBST(valgrind_command)
561 # Enable code coverage collection
562 AC_ARG_ENABLE(coverage,
563 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
564 [enable compiler's code coverage collection.
565 Use to measure compiler performance and locate
566 unused parts of the compiler. With LEVEL, specify
567 optimization. Values are opt, noopt,
569 [case "${enableval}" in
571 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
577 # a.k.a. --disable-coverage
581 AC_MSG_ERROR(unknown coverage setting $enableval)
585 AC_SUBST(coverage_flags)
587 AC_ARG_ENABLE(gather-detailed-mem-stats,
588 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
589 [enable detailed memory allocation stats gathering])], [],
590 [enable_gather_detailed_mem_stats=no])
591 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
592 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
593 [Define to enable detailed memory allocation stats gathering.])
595 # -------------------------------
596 # Miscenalleous configure options
597 # -------------------------------
601 [AS_HELP_STRING([--with-stabs],
602 [arrange to use stabs instead of host debug format])],
606 # Determine whether or not multilibs are enabled.
607 AC_ARG_ENABLE(multilib,
608 [AS_HELP_STRING([--enable-multilib],
609 [enable library support for multiple ABIs])],
610 [], [enable_multilib=yes])
611 AC_SUBST(enable_multilib)
613 # Determine whether or not multiarch is enabled.
614 AC_ARG_ENABLE(multiarch,
615 [AS_HELP_STRING([--enable-multiarch],
616 [enable support for multiarch paths])],
617 [case "${enableval}" in
618 yes|no|auto) enable_multiarch=$enableval;;
619 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
620 esac], [enable_multiarch=auto])
621 if test x${enable_multiarch} = xauto; then
622 if test x${with_native_system_header_dir} != x; then
623 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
626 if test x$host != x$target && test "x$with_sysroot" = x; then
627 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
631 AC_MSG_CHECKING(for multiarch configuration)
632 AC_SUBST(enable_multiarch)
633 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
635 # needed for setting the multiarch name for soft-float/hard-float ABIs
639 # Enable __cxa_atexit for C++.
640 AC_ARG_ENABLE(__cxa_atexit,
641 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
644 # Enable C extension for decimal float if target supports it.
645 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
647 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
648 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
649 [Define to 1 to enable decimal float extension to C.])
651 # Use default_decimal_float for dependency.
652 enable_decimal_float=$default_decimal_float
654 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
655 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
656 [Define to 1 to specify that we are using the BID decimal floating
657 point format instead of DPD])
659 # Enable C extension for fixed-point arithmetic.
660 AC_ARG_ENABLE(fixed-point,
661 [AS_HELP_STRING([--enable-fixed-point],
662 [enable fixed-point arithmetic extension to C])],
667 enable_fixed_point=yes
671 enable_fixed_point=yes
674 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
675 enable_fixed_point=no
679 AC_SUBST(enable_fixed_point)
681 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
682 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
683 [Define to 1 to enable fixed-point arithmetic extension to C.])
686 # Pass with no value to take the default
687 # Pass with a value to specify a thread package
688 AC_ARG_ENABLE(threads,
689 [AS_HELP_STRING([[--enable-threads[=LIB]]],
690 [enable thread usage for target GCC,
691 using LIB thread package])],,
695 [AS_HELP_STRING([--enable-tls],
696 [enable or disable generation of tls code
697 overriding the assembler check for tls support])],
701 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
702 Valid choices are 'yes' and 'no'.]) ;;
706 AC_ARG_ENABLE(objc-gc,
707 [AS_HELP_STRING([--enable-objc-gc],
708 [enable the use of Boehm's garbage collector with
709 the GNU Objective-C runtime])],
710 if test x$enable_objc_gc = xno; then
717 AC_ARG_WITH([upc-pts],
719 [--with-upc-pts={struct,packed}],
720 [choose the representation of a UPC pointer-to-shared]),
723 packed|struct) upc_pts_rep="$withval" ;;
724 *) AC_MSG_ERROR([$withval is an invalid option to --with-upc-pts])
728 [upc_pts_rep="packed"])
731 # Perl is required for checking pts representation
732 AC_CHECK_PROG(PERL, perl, perl)
734 AC_ARG_WITH([upc-pts-vaddr-order],
736 [--with-upc-pts-vaddr-order={last,first}],
737 [choose position of the address field in UPC pointer-to-shared representation]),
739 upc_vaddr_order="$withval"
740 case "$upc_vaddr_order" in
743 [$withval is an invalid option to --with-upc-pts-vaddr-order]) ;;
746 [upc_vaddr_order="first"])
748 AC_ARG_WITH([upc-pts-packed-bits],
750 [--with-upc-pts-packed-bits=phase,thread,vaddr],
751 [choose bit distribution in packed UPC pointer-to-shared representation]),
753 if test x"$upc_pts_rep" = x"packed"; then
754 UPC_PTS_PHASE_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
755 print $1 if ($1+$2+$3 == 64) && $1>=1;'`
756 UPC_PTS_THREAD_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
757 print $2 if ($1+$2+$3 == 64) && $2>=1;'`
758 UPC_PTS_VADDR_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
759 print $3 if ($1+$2+$3 == 64) && $3>=20;'`
760 if test -z "$UPC_PTS_PHASE_SIZE" \
761 || test -z "$UPC_PTS_THREAD_SIZE" \
762 || test -z "$UPC_PTS_VADDR_SIZE" ; then
763 AC_MSG_ERROR([--with-upc-pts-packed-bits=phase,thread,vaddr requires
764 phase+thread+vaddr=64 and phase >= 1 and thread >= 1 and vaddr >= 20])
767 AC_MSG_ERROR([--with-upc-pts-packed-bits is only supported for
768 the packed UPC pointer-to-shared representation])
772 # GNU UPC packed pointer representation defaults.
775 UPC_PTS_PHASE_SIZE=20
776 UPC_PTS_THREAD_SIZE=12
777 UPC_PTS_VADDR_SIZE=32
780 UPC_PTS_PHASE_SIZE=20
781 UPC_PTS_THREAD_SIZE=10
782 UPC_PTS_VADDR_SIZE=34
786 AC_ARG_ENABLE(upc-link-script,
788 [--enable-upc-link-script],
789 [enable UPC's use of a custom linker script;
790 this will define the UPC shared section as a no load section on
791 targets where this feature is supported (requires GNU LD)]),
796 AC_MSG_ERROR([--enable-upc-link-script accepts only yes or no.])
799 [enable_upc_link_script=no])
802 # Process UPC-specific configuration options.
804 AC_MSG_CHECKING([for UPC pointer-to-shared representation])
805 AC_MSG_RESULT([$upc_pts_rep])
806 case "$upc_pts_rep" in
808 AC_DEFINE(HAVE_UPC_PTS_PACKED_REP,[1],
809 [Define to 1 if UPC pointer-to-shared representation
810 is a packed 64 bit word.])
813 AC_DEFINE(HAVE_UPC_PTS_STRUCT_REP,[1],
814 [Define to 1 if UPC pointer-to-shared representation
818 AC_MSG_CHECKING([for UPC pointer-to-shared address field position])
819 AC_MSG_RESULT([$upc_vaddr_order])
820 if test x"$upc_vaddr_order" = x"first"; then
821 AC_DEFINE(HAVE_UPC_PTS_VADDR_FIRST,[1],
822 [Define to 1 if the 'vaddr' field is the first field
823 in the UPC pointer-to-shared representation.])
825 if test x"$upc_pts_rep" = x"packed"; then
826 AC_DEFINE_UNQUOTED(UPC_PTS_PHASE_SIZE,$UPC_PTS_PHASE_SIZE,
827 [For packed UPC pointers-to-shared,
828 the size of the phase field (in bits).])
829 AC_DEFINE_UNQUOTED(UPC_PTS_THREAD_SIZE,$UPC_PTS_THREAD_SIZE,
830 [For packed UPC pointers-to-shared,
831 the size of the thread field (in bits).])
832 AC_DEFINE_UNQUOTED(UPC_PTS_VADDR_SIZE,$UPC_PTS_VADDR_SIZE,
833 [For packed UPC pointers-to-shared,
834 the size of the address field (in bits).])
835 AC_MSG_CHECKING([for packed UPC pointer-to-shared layout])
837 ["phase=${UPC_PTS_PHASE_SIZE},thread=${UPC_PTS_THREAD_SIZE},
838 vaddr=${UPC_PTS_VADDR_SIZE}"])
840 AC_MSG_CHECKING([for UPC link script support])
841 AC_MSG_RESULT($enable_upc_link_script)
842 if test "$enable_upc_link_script" = yes; then
843 AC_DEFINE(HAVE_UPC_LINK_SCRIPT, 1, [Define to 1 if UPC link script is supported.])
847 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
848 dwarf2="$with_dwarf2",
851 AC_ARG_ENABLE(shared,
852 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
854 case $enable_shared in
858 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
859 for pkg in $enableval; do
860 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
867 ], [enable_shared=yes])
868 AC_SUBST(enable_shared)
870 AC_ARG_WITH([native-system-header-dir],
871 [ --with-native-system-header-dir=dir
872 use dir as the directory to look for standard
873 system header files in. Defaults to /usr/include.],
875 case ${with_native_system_header_dir} in
876 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
877 /* | [[A-Za-z]]:[[\\/]]*) ;;
878 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
880 configured_native_system_header_dir="${withval}"
881 ], [configured_native_system_header_dir=])
883 AC_ARG_WITH(build-sysroot,
884 [AS_HELP_STRING([--with-build-sysroot=sysroot],
885 [use sysroot as the system root during the build])],
886 [if test x"$withval" != x ; then
887 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
889 [SYSROOT_CFLAGS_FOR_TARGET=])
890 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
892 if test "x$prefix" = xNONE; then
893 test_prefix=/usr/local
897 if test "x$exec_prefix" = xNONE; then
898 test_exec_prefix=$test_prefix
900 test_exec_prefix=$exec_prefix
904 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
905 [search for usr/lib, usr/include, et al, within DIR])],
907 case ${with_sysroot} in
908 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
909 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
912 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
913 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
915 case ${TARGET_SYSTEM_ROOT} in
916 "${test_prefix}"|"${test_prefix}/"*|\
917 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
918 '${prefix}'|'${prefix}/'*|\
919 '${exec_prefix}'|'${exec_prefix}/'*)
920 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
921 TARGET_SYSTEM_ROOT_DEFINE="$t"
926 TARGET_SYSTEM_ROOT_DEFINE=
927 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
929 AC_SUBST(TARGET_SYSTEM_ROOT)
930 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
931 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
934 [AS_HELP_STRING([--with-specs=SPECS],
935 [add SPECS to driver command-line processing])],
936 [CONFIGURE_SPECS=$withval],
939 AC_SUBST(CONFIGURE_SPECS)
941 ACX_PKGVERSION([GCC])
942 ACX_BUGURL([http://gccupc.org/bugs])
944 # Sanity check enable_languages in case someone does not run the toplevel
945 # configure # script.
946 AC_ARG_ENABLE(languages,
947 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
948 [case ,${enable_languages}, in
950 # go safe -- we cannot be much sure without the toplevel
952 # analysis of which target libs are present and usable
956 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
961 enable_languages=c,${enable_languages}
964 [enable_languages=c])
966 AC_ARG_WITH(multilib-list,
967 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
969 with_multilib_list=default)
971 # -------------------------
972 # Checks for other programs
973 # -------------------------
977 # Find some useful tools
979 # We need awk to create options.c and options.h.
980 # Bail out if it's missing.
982 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
989 AC_SUBST(ranlib_flags)
993 # See if cmp has --ignore-initial.
994 gcc_AC_PROG_CMP_IGNORE_INITIAL
996 # See if we have the mktemp command.
997 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
999 # See if makeinfo has been installed and is modern enough
1000 # that we can use it.
1001 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1002 [GNU texinfo.* \([0-9][0-9.]*\)],
1003 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1004 if test $gcc_cv_prog_makeinfo_modern = no; then
1006 *** Makeinfo is missing or too old.
1007 *** Info documentation will not be built.])
1012 AC_SUBST(BUILD_INFO)
1014 # Is pod2man recent enough to regenerate manpages?
1015 AC_MSG_CHECKING([for recent Pod::Man])
1016 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1018 GENERATED_MANPAGES=generated-manpages
1023 AC_SUBST(GENERATED_MANPAGES)
1025 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1028 dnl Don't use AC_PROG_LEX; we insist on flex.
1029 dnl LEXLIB is not useful in gcc.
1030 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1033 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1035 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1036 # check for build == host before using them.
1039 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1040 && test -d ../binutils ; then
1041 NM='${objdir}/../binutils/nm-new'
1043 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1047 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1048 && test -d ../binutils ; then
1049 AR='${objdir}/../binutils/ar'
1051 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1055 # --------------------
1056 # Checks for C headers
1057 # --------------------
1059 # Need to reject headers which give warnings, so that the -Werror bootstrap
1060 # works later. *sigh* This needs to come before all header checks.
1067 AC_HEADER_TIOCGWINSZ
1068 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1069 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
1070 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1071 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1073 # Check for thread headers.
1074 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1075 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1077 # These tests can't be done till we know if we have limits.h.
1081 # ----------------------
1082 # Checks for C++ headers
1083 # ----------------------
1085 dnl Autoconf will give an error in the configure script if there is no
1086 dnl C++ preprocessor. Hack to prevent that.
1087 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1089 m4_popdef([AC_MSG_ERROR])[]dnl
1093 AC_CHECK_HEADERS(unordered_map)
1094 AC_CHECK_HEADERS(tr1/unordered_map)
1095 AC_CHECK_HEADERS(ext/hash_map)
1100 # Dependency checking.
1105 AC_CONFIG_COMMANDS([gccdepdir],[
1106 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1107 for lang in $subdirs c-family common
1109 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1110 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1112 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1120 # These libraries may be used by collect2.
1121 # We may need a special search path to get them linked.
1122 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1124 for libs in '' -lld -lmld \
1125 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1126 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1129 AC_TRY_LINK_FUNC(ldopen,
1130 [gcc_cv_collect2_libs="$libs"; break])
1133 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1134 case $gcc_cv_collect2_libs in
1136 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1138 AC_SUBST(COLLECT2_LIBS)
1140 # When building Ada code on Alpha, we need exc_resume which is usually in
1141 # -lexc. So test for it.
1144 AC_SEARCH_LIBS(exc_resume, exc)
1147 AC_SUBST(GNAT_LIBEXC)
1149 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1152 AC_SEARCH_LIBS(kstat_open, kstat)
1153 EXTRA_GCC_LIBS="$LIBS"
1155 AC_SUBST(EXTRA_GCC_LIBS)
1157 # Some systems put ldexp and frexp in libm instead of libc; assume
1158 # they're both in the same place. jcf-dump needs them.
1161 AC_SEARCH_LIBS(ldexp, m)
1166 # Use <inttypes.h> only if it exists,
1167 # doesn't clash with <sys/types.h>, and declares intmax_t.
1168 AC_MSG_CHECKING(for inttypes.h)
1169 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1170 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1171 [[#include <sys/types.h>
1172 #include <inttypes.h>]],
1173 [[intmax_t i = -1;]])],
1174 [gcc_cv_header_inttypes_h=yes],
1175 [gcc_cv_header_inttypes_h=no])])
1176 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1177 if test $gcc_cv_header_inttypes_h = yes; then
1178 AC_DEFINE(HAVE_INTTYPES_H, 1,
1179 [Define if you have a working <inttypes.h> header file.])
1182 dnl Disabled until we have a complete test for buggy enum bitfields.
1183 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1185 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1186 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1187 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1188 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1189 putchar_unlocked putc_unlocked)
1190 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1191 sysconf strsignal getrusage nl_langinfo \
1192 gettimeofday mbstowcs wcswidth mmap setlocale \
1193 gcc_UNLOCKED_FUNCS madvise)
1195 if test x$ac_cv_func_mbstowcs = xyes; then
1196 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1197 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1203 [gcc_cv_func_mbstowcs_works=yes],
1204 [gcc_cv_func_mbstowcs_works=no],
1205 [gcc_cv_func_mbstowcs_works=yes])])
1206 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1207 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1208 [Define this macro if mbstowcs does not crash when its
1209 first argument is NULL.])
1213 AC_CHECK_TYPE(ssize_t, int)
1214 AC_CHECK_TYPE(caddr_t, char *)
1216 GCC_AC_FUNC_MMAP_BLACKLIST
1220 # Under VMS, vfork works very differently than on Unix. The standard test
1221 # won't work, and it isn't easily adaptable. It makes more sense to
1223 ac_cv_func_vfork_works=yes
1228 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1229 # iconv() prototype.
1234 # Until we have in-tree GNU iconv:
1236 AC_SUBST(LIBICONV_DEP)
1242 # We will need to find libiberty.h and ansidecl.h
1243 saved_CFLAGS="$CFLAGS"
1244 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1245 saved_CXXFLAGS="$CXXFLAGS"
1246 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1247 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1248 strsignal strstr stpcpy strverscmp \
1249 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1250 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1251 #include "ansidecl.h"
1252 #include "system.h"])
1254 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1255 #include "ansidecl.h"
1257 #ifdef HAVE_SYS_RESOURCE_H
1258 #include <sys/resource.h>
1262 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1263 #include "ansidecl.h"
1265 #ifdef HAVE_SYS_RESOURCE_H
1266 #include <sys/resource.h>
1268 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1269 [Define to `long' if <sys/resource.h> doesn't define.])])
1271 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1272 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1273 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1274 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1275 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1276 #include "ansidecl.h"
1285 gcc_AC_CHECK_DECLS(times, , ,[
1286 #include "ansidecl.h"
1288 #ifdef HAVE_SYS_TIMES_H
1289 #include <sys/times.h>
1293 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1294 #include "ansidecl.h"
1299 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1302 gcc_AC_CHECK_DECLS(madvise, , ,[
1303 #include "ansidecl.h"
1308 # More time-related stuff.
1309 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1310 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1311 #include "ansidecl.h"
1313 #ifdef HAVE_SYS_TIMES_H
1314 #include <sys/times.h>
1316 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1317 if test $ac_cv_struct_tms = yes; then
1318 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1319 [Define if <sys/times.h> defines struct tms.])
1322 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1323 # revisit after autoconf 2.50.
1324 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1325 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1326 #include "ansidecl.h"
1328 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1329 if test $gcc_cv_type_clock_t = yes; then
1330 AC_DEFINE(HAVE_CLOCK_T, 1,
1331 [Define if <time.h> defines clock_t.])
1334 # Check if F_SETLKW is supported by fcntl.
1335 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1336 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1337 #include <fcntl.h>]], [[
1343 return fcntl (1, F_SETLKW, &fl);]])],
1344 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1345 if test $ac_cv_f_setlkw = yes; then
1346 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1347 [Define if F_SETLKW supported by fcntl.])
1350 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1351 CFLAGS="$saved_CFLAGS"
1352 CXXFLAGS="$saved_CXXFLAGS"
1354 # mkdir takes a single argument on some systems.
1355 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1363 # With Setjmp/Longjmp based exception handling.
1364 AC_ARG_ENABLE(sjlj-exceptions,
1365 [AS_HELP_STRING([--enable-sjlj-exceptions],
1366 [arrange to use setjmp/longjmp exception handling])],
1369 if test $enableval != yes; then
1370 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1375 force_sjlj_exceptions=yes],
1378 force_sjlj_exceptions=yes
1382 force_sjlj_exceptions=no
1385 if test $force_sjlj_exceptions = yes; then
1386 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1387 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1388 [Define 0/1 to force the choice for exception handling model.])
1391 # --------------------------------------------------------
1392 # Build, host, and target specific configuration fragments
1393 # --------------------------------------------------------
1395 # Collect build-machine-specific information.
1396 . ${srcdir}/config.build
1398 # Collect host-machine-specific information.
1399 . ${srcdir}/config.host
1403 # Collect target-machine-specific information.
1404 . ${srcdir}/config.gcc
1406 extra_objs="${host_extra_objs} ${extra_objs}"
1407 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1409 # Default the target-machine variables that were not explicitly set.
1410 if test x"$tm_file" = x
1411 then tm_file=$cpu_type/$cpu_type.h; fi
1413 if test x"$extra_headers" = x
1414 then extra_headers=; fi
1416 if test x$md_file = x
1417 then md_file=$cpu_type/$cpu_type.md; fi
1419 if test x$out_file = x
1420 then out_file=$cpu_type/$cpu_type.c; fi
1422 if test x"$tmake_file" = x
1423 then tmake_file=$cpu_type/t-$cpu_type
1426 # Support --enable-initfini-array.
1427 if test x$enable_initfini_array != xno; then
1428 tm_file="${tm_file} initfini-array.h"
1431 if test x"$dwarf2" = xyes
1432 then tm_file="$tm_file tm-dwarf2.h"
1435 # Say what files are being used for the output code and MD file.
1436 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1437 echo "Using \`$srcdir/config/$md_file' as machine description file."
1439 # If any of the xm_file variables contain nonexistent files, warn
1440 # about them and drop them.
1443 for x in $build_xm_file; do
1444 if test -f $srcdir/config/$x
1446 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1452 for x in $host_xm_file; do
1453 if test -f $srcdir/config/$x
1455 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1461 for x in $xm_file; do
1462 if test -f $srcdir/config/$x
1464 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1470 for f in $tm_file; do
1473 if test $count = ax; then
1474 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1476 echo "Using the following target machine macro files:"
1477 for f in $tm_file; do
1478 echo " $srcdir/config/$f"
1482 if test x$need_64bit_hwint = xyes; then
1483 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1484 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1487 if test x$use_long_long_for_widest_fast_int = xyes; then
1488 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1489 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1490 efficiently supported by the host hardware.])
1493 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1494 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1496 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1497 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1500 for f in $host_xm_file; do
1503 if test $count = a; then
1505 elif test $count = ax; then
1506 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1508 echo "Using the following host machine macro files:"
1509 for f in $host_xm_file; do
1510 echo " $srcdir/config/$f"
1513 echo "Using ${out_host_hook_obj} for host machine hooks."
1515 if test "$host_xm_file" != "$build_xm_file"; then
1517 for f in $build_xm_file; do
1520 if test $count = a; then
1522 elif test $count = ax; then
1523 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1525 echo "Using the following build machine macro files:"
1526 for f in $build_xm_file; do
1527 echo " $srcdir/config/$f"
1532 if test -n "$configured_native_system_header_dir"; then
1533 native_system_header_dir=$configured_native_system_header_dir
1535 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1536 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1540 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1541 gcc_cv_mcontext_underscores,
1543 #include <sys/cdefs.h>
1544 #include <sys/signal.h>
1545 #include <ucontext.h>
1546 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1548 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1549 if test $gcc_cv_mcontext_underscores = yes; then
1550 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1551 [mcontext_t fields start with __])
1560 # Check if a valid thread package
1561 case ${enable_threads} in
1564 target_thread_file='single'
1568 target_thread_file='single'
1570 aix | dce | lynx | mipssde | posix | rtems | \
1571 single | tpf | vxworks | win32)
1572 target_thread_file=${enable_threads}
1575 echo "${enable_threads} is an unknown thread package" 1>&2
1580 if test x${thread_file} = x; then
1581 # No thread file set by target-specific clauses in config.gcc,
1582 # so use file chosen by default logic above
1583 thread_file=${target_thread_file}
1591 if test x$enable___cxa_atexit = xyes || \
1592 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1593 if test x$host = x$target; then
1595 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1596 # keyed to flag_use_cxa_atexit
1604 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1605 [echo "__cxa_atexit can't be enabled on this target"])
1609 # We can't check for __cxa_atexit when building a cross, so assume
1613 if test x$use_cxa_atexit = xyes; then
1614 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1615 [Define if you want to use __cxa_atexit, rather than atexit, to
1616 register C++ destructors for local statics and global objects.
1617 This is essential for fully standards-compliant handling of
1618 destructors, but requires __cxa_atexit in libc.])
1622 # Look for a file containing extra machine modes.
1623 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1624 extra_modes_file='$(srcdir)'/config/${extra_modes}
1625 AC_SUBST(extra_modes_file)
1626 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1627 [Define to the name of a file containing a list of extra machine modes
1628 for this architecture.])
1631 # Convert extra_options into a form suitable for Makefile use.
1634 for f in $extra_options; do
1635 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1636 all_opt_files="$all_opt_files $srcdir/config/$f"
1638 AC_SUBST(extra_opt_files)
1640 # auto-host.h is the file containing items generated by autoconf and is
1641 # the first file included by config.h.
1642 # If host=build, it is correct to have bconfig include auto-host.h
1643 # as well. If host!=build, we are in error and need to do more
1644 # work to find out the build config parameters.
1645 if test x$host = x$build
1647 build_auto=auto-host.h
1649 # We create a subdir, then run autoconf in the subdir.
1650 # To prevent recursion we set host and build for the new
1651 # invocation of configure to the build for this invocation
1658 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1659 *) realsrcdir=../${srcdir};;
1661 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1662 LDFLAGS="${LDFLAGS_FOR_BUILD}" GMPINC="" \
1663 ${realsrcdir}/configure \
1664 --enable-languages=${enable_languages-all} \
1665 --target=$target_alias --host=$build_alias --build=$build_alias
1667 # We just finished tests for the build machine, so rename
1668 # the file auto-build.h in the gcc directory.
1669 mv auto-host.h ../auto-build.h
1672 build_auto=auto-build.h
1674 AC_SUBST(build_subdir)
1676 tm_file="${tm_file} defaults.h"
1677 tm_p_file="${tm_p_file} tm-preds.h"
1678 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1679 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1680 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1681 # put this back in temporarily.
1682 xm_file="auto-host.h ansidecl.h ${xm_file}"
1689 # Compile in configure arguments.
1690 if test -f configargs.h ; then
1691 # Being re-configured.
1692 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1693 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1695 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1698 # Double all backslashes and backslash all quotes to turn
1699 # gcc_config_arguments into a C string.
1700 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1701 $gcc_config_arguments
1703 gcc_config_arguments_str=`cat conftest.out`
1706 cat > configargs.h <<EOF
1707 /* Generated automatically. */
1708 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1709 static const char thread_model[] = "$thread_file";
1711 static const struct {
1712 const char *name, *value;
1713 } configure_default_options[] = $configure_default_options;
1718 gcc_BASEVER=`cat $srcdir/BASE-VER`
1719 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1720 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1721 if test -f $srcdir/REVISION ; then
1722 gcc_REVISION=`cat $srcdir/REVISION`
1726 cat > plugin-version.h <<EOF
1727 #include "configargs.h"
1729 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1730 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1731 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1732 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1734 static char basever[] = "$gcc_BASEVER";
1735 static char datestamp[] = "$gcc_DATESTAMP";
1736 static char devphase[] = "$gcc_DEVPHASE";
1737 static char revision[] = "$gcc_REVISION";
1739 /* FIXME plugins: We should make the version information more precise.
1740 One way to do is to add a checksum. */
1742 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1744 configuration_arguments};
1748 # Internationalization
1749 ZW_GNU_GETTEXT_SISTER_DIR
1751 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1752 # -liconv on the link line twice.
1753 case "$LIBINTL" in *$LIBICONV*)
1757 AC_ARG_ENABLE(secureplt,
1758 [AS_HELP_STRING([--enable-secureplt],
1759 [enable -msecure-plt by default for PowerPC])],
1762 AC_ARG_ENABLE(leading-mingw64-underscores,
1763 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1764 [enable leading underscores on 64 bit mingw targets]),
1766 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1767 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1768 [Define if we should use leading underscore on 64 bit mingw targets])])
1771 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1774 AC_ARG_ENABLE(frame-pointer,
1775 [AS_HELP_STRING([--enable-frame-pointer],
1776 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1779 linux* | darwin[[8912]]*)
1780 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1782 enable_frame_pointer=no
1785 enable_frame_pointer=yes
1790 # Windows32 Registry support for specifying GCC installation paths.
1791 AC_ARG_ENABLE(win32-registry,
1792 [AS_HELP_STRING([--disable-win32-registry],
1793 [disable lookup of installation paths in the
1794 Registry on Windows hosts])
1795 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1796 AS_HELP_STRING([--enable-win32-registry=KEY],
1797 [use KEY instead of GCC version as the last portion
1798 of the registry key])],,)
1801 win32 | pe | cygwin* | mingw32* | uwin*)
1802 if test "x$enable_win32_registry" != xno; then
1803 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1806 if test "x$enable_win32_registry" != xno; then
1807 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1808 [Define to 1 if installation paths should be looked up in the Windows
1809 Registry. Ignored on non-Windows hosts.])
1811 if test "x$enable_win32_registry" != xyes \
1812 && test "x$enable_win32_registry" != x; then
1813 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1814 [Define to be the last component of the Windows registry key under which
1815 to look for installation paths. The full key used will be
1816 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1817 The default is the GCC version number.])
1823 # Get an absolute path to the GCC top-level source directory
1824 holddir=`${PWDCMD-pwd}`
1826 topdir=`${PWDCMD-pwd}`
1829 # Conditionalize the makefile for this host machine.
1831 for f in ${host_xmake_file}
1833 if test -f ${srcdir}/config/$f
1835 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1839 # Conditionalize the makefile for this target machine.
1841 for f in ${tmake_file}
1843 if test -f ${srcdir}/config/$f
1845 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1848 tmake_file="${tmake_file_}"
1850 out_object_file=`basename $out_file .c`.o
1851 common_out_object_file=`basename $common_out_file .c`.o
1853 tm_file_list="options.h"
1854 tm_include_list="options.h insn-constants.h"
1855 for f in $tm_file; do
1858 f=`echo $f | sed 's/^..//'`
1859 tm_file_list="${tm_file_list} $f"
1860 tm_include_list="${tm_include_list} $f"
1863 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1864 tm_include_list="${tm_include_list} $f"
1867 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1868 tm_include_list="${tm_include_list} config/$f"
1875 for f in $tm_p_file; do
1878 tm_p_file_list="${tm_p_file_list} $f"
1879 tm_p_include_list="${tm_p_include_list} $f"
1882 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1883 tm_p_include_list="${tm_p_include_list} config/$f"
1889 for f in $xm_file; do
1892 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1893 xm_include_list="${xm_include_list} $f"
1896 xm_file_list="${xm_file_list} $f"
1897 xm_include_list="${xm_include_list} $f"
1900 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1901 xm_include_list="${xm_include_list} config/$f"
1907 host_xm_include_list=
1908 for f in $host_xm_file; do
1911 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1912 host_xm_include_list="${host_xm_include_list} $f"
1915 host_xm_file_list="${host_xm_file_list} $f"
1916 host_xm_include_list="${host_xm_include_list} $f"
1919 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1920 host_xm_include_list="${host_xm_include_list} config/$f"
1926 for f in $build_xm_file; do
1929 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1930 build_xm_include_list="${build_xm_include_list} $f"
1932 auto-build.h | auto-host.h )
1933 build_xm_file_list="${build_xm_file_list} $f"
1934 build_xm_include_list="${build_xm_include_list} $f"
1937 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1938 build_xm_include_list="${build_xm_include_list} config/$f"
1943 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1944 # cross-compiler which does not use the native headers and libraries.
1945 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1946 CROSS= AC_SUBST(CROSS)
1947 ALL=all.internal AC_SUBST(ALL)
1948 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1950 if test "x$with_build_sysroot" != x; then
1951 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1953 # This value is used, even on a native system, because
1954 # CROSS_SYSTEM_HEADER_DIR is just
1955 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1956 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1959 if test x$host != x$target
1961 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1963 SYSTEM_HEADER_DIR=$build_system_header_dir
1964 case "$host","$target" in
1965 # Darwin crosses can use the host system's libraries and headers,
1966 # because of the fat library support. Of course, it must be the
1967 # same version of Darwin on both sides. Allow the user to
1968 # just say --target=foo-darwin without a version number to mean
1969 # "the version on this system".
1970 *-*-darwin*,*-*-darwin*)
1971 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1972 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1973 if test $hostos = $targetos -o $targetos = darwin ; then
1975 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1980 i?86-*-*,x86_64-*-* \
1981 | powerpc*-*-*,powerpc64*-*-*)
1982 CROSS="$CROSS -DNATIVE_CROSS" ;;
1987 if test "x$with_headers" = x; then
1994 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1995 SYSTEM_HEADER_DIR=$build_system_header_dir
1998 # If this is a cross-compiler that does not
1999 # have its own set of headers then define
2002 # If this is using newlib, without having the headers available now,
2003 # then define inhibit_libc in LIBGCC2_CFLAGS.
2004 # This prevents libgcc2 from containing any code which requires libc
2006 : ${inhibit_libc=false}
2007 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2008 test x$with_newlib = xyes ; } &&
2009 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
2012 AC_SUBST(inhibit_libc)
2014 # When building gcc with a cross-compiler, we need to adjust things so
2015 # that the generator programs are still built with the native compiler.
2016 # Also, we cannot run fixincludes.
2018 # These are the normal (build=host) settings:
2019 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2020 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2021 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2022 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2023 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2024 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2026 # And these apply if build != host, or we are generating coverage data
2027 if test x$build != x$host || test "x$coverage_flags" != x
2029 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2030 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2031 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2034 # Expand extra_headers to include complete path.
2035 # This substitutes for lots of t-* files.
2037 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2038 for file in ${extra_headers} ; do
2039 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2042 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2043 if test x"$use_gcc_tgmath" = xyes
2044 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2047 # Define collect2 in Makefile.
2048 case $host_can_use_collect2 in
2050 *) collect2='collect2$(exeext)' ;;
2052 AC_SUBST([collect2])
2054 # Add a definition of USE_COLLECT2 if system wants one.
2055 case $use_collect2 in
2056 no) use_collect2= ;;
2059 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2060 xm_defines="${xm_defines} USE_COLLECT2"
2061 case $host_can_use_collect2 in
2063 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2069 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2070 [Define to the name of the LTO plugin DSO that must be
2071 passed to the linker's -plugin=LIB option.])
2073 # ---------------------------
2074 # Assembler & linker features
2075 # ---------------------------
2077 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2078 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2079 # However when ld-new is first executed from the build tree, libtool will
2080 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2081 # to the build tree. While doing this we need to use the previous-stage
2082 # linker, or we have an infinite loop. The presence of a shell script as
2083 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2084 # the gcc/collect-ld script. So we need to know how libtool works, or
2085 # exec-tool will fail.
2087 m4_defun([_LT_CONFIG_COMMANDS], [])
2090 AC_SUBST(enable_fast_install)
2092 # Identify the assembler which will work hand-in-glove with the newly
2093 # built GCC, so that we can examine its features. This is the assembler
2094 # which will be driven by the driver program.
2096 # If build != host, and we aren't building gas in-tree, we identify a
2097 # build->target assembler and hope that it will have the same features
2098 # as the host->target assembler we'll be using.
2099 gcc_cv_gas_major_version=
2100 gcc_cv_gas_minor_version=
2101 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2103 m4_pattern_allow([AS_FOR_TARGET])dnl
2104 AS_VAR_SET_IF(gcc_cv_as,, [
2105 if test -x "$DEFAULT_ASSEMBLER"; then
2106 gcc_cv_as="$DEFAULT_ASSEMBLER"
2107 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2108 && test -f ../gas/Makefile \
2109 && test x$build = x$host; then
2110 gcc_cv_as=../gas/as-new$build_exeext
2111 elif test -x as$build_exeext; then
2112 # Build using assembler in the current directory.
2113 gcc_cv_as=./as$build_exeext
2114 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2115 gcc_cv_as="$AS_FOR_TARGET"
2117 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2120 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2121 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2122 case "$ORIGINAL_AS_FOR_TARGET" in
2123 ./as | ./as$build_exeext) ;;
2124 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2127 AC_MSG_CHECKING(what assembler to use)
2128 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2129 # Single tree build which includes gas. We want to prefer it
2130 # over whatever linker top-level may have detected, since
2131 # we'll use what we're building after installation anyway.
2132 AC_MSG_RESULT(newly built gas)
2134 _gcc_COMPUTE_GAS_VERSION
2135 in_tree_gas_is_elf=no
2136 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2137 || (grep 'obj_format = multi' ../gas/Makefile \
2138 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2140 in_tree_gas_is_elf=yes
2143 AC_MSG_RESULT($gcc_cv_as)
2149 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2150 [case "${enableval}" in
2157 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2158 [case "${enableval}" in
2160 install_gold_as_default=yes
2163 if test x${default_ld} != x; then
2164 install_gold_as_default=yes
2170 AC_MSG_ERROR([invalid --enable-gold argument])
2173 [install_gold_as_default=no])
2175 # Identify the linker which will work hand-in-glove with the newly
2176 # built GCC, so that we can examine its features. This is the linker
2177 # which will be driven by the driver program.
2179 # If build != host, and we aren't building gas in-tree, we identify a
2180 # build->target linker and hope that it will have the same features
2181 # as the host->target linker we'll be using.
2182 gcc_cv_gld_major_version=
2183 gcc_cv_gld_minor_version=
2184 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2185 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2186 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2188 AS_VAR_SET_IF(gcc_cv_ld,, [
2189 if test -x "$DEFAULT_LINKER"; then
2190 gcc_cv_ld="$DEFAULT_LINKER"
2191 elif test $install_gold_as_default = yes \
2192 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2193 && test -f ../gold/Makefile \
2194 && test x$build = x$host; then
2195 gcc_cv_ld=../gold/ld-new$build_exeext
2196 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2197 && test -f ../ld/Makefile \
2198 && test x$build = x$host; then
2199 gcc_cv_ld=../ld/ld-new$build_exeext
2200 elif test -x collect-ld$build_exeext; then
2201 # Build using linker in the current directory.
2202 gcc_cv_ld=./collect-ld$build_exeext
2203 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2204 gcc_cv_ld="$LD_FOR_TARGET"
2206 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2209 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2210 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2211 # if the PLUGIN_LD is set ld-new, just have it as ld
2212 # as that is the installed named.
2213 if test x$PLUGIN_LD_SUFFIX = xld-new \
2214 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2217 AC_ARG_WITH(plugin-ld,
2218 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2219 [if test x"$withval" != x; then
2220 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2221 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2223 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2224 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2226 # Check to see if we are using gold instead of ld
2227 AC_MSG_CHECKING(whether we are using gold)
2229 if test x$gcc_cv_ld != x; then
2230 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2231 | grep "GNU gold" > /dev/null; then
2235 AC_MSG_RESULT($ld_is_gold)
2237 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2238 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2239 case "$ORIGINAL_LD_FOR_TARGET" in
2240 ./collect-ld | ./collect-ld$build_exeext) ;;
2241 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2244 AC_MSG_CHECKING(what linker to use)
2245 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2246 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2247 # Single tree build which includes ld. We want to prefer it
2248 # over whatever linker top-level may have detected, since
2249 # we'll use what we're building after installation anyway.
2250 AC_MSG_RESULT(newly built ld)
2252 in_tree_ld_is_elf=no
2253 if (grep 'EMUL = .*elf' ../ld/Makefile \
2254 || grep 'EMUL = .*linux' ../ld/Makefile \
2255 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2256 in_tree_ld_is_elf=yes
2257 elif test "$ld_is_gold" = yes; then
2258 in_tree_ld_is_elf=yes
2260 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
2263 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2264 if test x$gcc_cv_gld_version != x; then
2268 case $gcc_cv_gld_version in
2271 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2274 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2275 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2277 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2278 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2280 AC_MSG_RESULT($gcc_cv_ld)
2282 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2283 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2284 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2287 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2288 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2290 # Figure out what nm we will be using.
2291 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2292 AS_VAR_SET_IF(gcc_cv_nm,, [
2293 if test -f $gcc_cv_binutils_srcdir/configure.in \
2294 && test -f ../binutils/Makefile \
2295 && test x$build = x$host; then
2296 gcc_cv_nm=../binutils/nm-new$build_exeext
2297 elif test -x nm$build_exeext; then
2298 gcc_cv_nm=./nm$build_exeext
2299 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2300 gcc_cv_nm="$NM_FOR_TARGET"
2302 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2305 AC_MSG_CHECKING(what nm to use)
2306 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2307 # Single tree build which includes binutils.
2308 AC_MSG_RESULT(newly built nm)
2311 AC_MSG_RESULT($gcc_cv_nm)
2315 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2316 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2317 case "$ORIGINAL_NM_FOR_TARGET" in
2318 ./nm | ./nm$build_exeext) ;;
2319 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2323 # Figure out what objdump we will be using.
2324 AS_VAR_SET_IF(gcc_cv_objdump,, [
2325 if test -f $gcc_cv_binutils_srcdir/configure.in \
2326 && test -f ../binutils/Makefile \
2327 && test x$build = x$host; then
2328 # Single tree build which includes binutils.
2329 gcc_cv_objdump=../binutils/objdump$build_exeext
2330 elif test -x objdump$build_exeext; then
2331 gcc_cv_objdump=./objdump$build_exeext
2332 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2333 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2335 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2338 AC_MSG_CHECKING(what objdump to use)
2339 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2340 # Single tree build which includes binutils.
2341 AC_MSG_RESULT(newly built objdump)
2342 elif test x$gcc_cv_objdump = x; then
2343 AC_MSG_RESULT(not found)
2345 AC_MSG_RESULT($gcc_cv_objdump)
2348 # Figure out what readelf we will be using.
2349 AS_VAR_SET_IF(gcc_cv_readelf,, [
2350 if test -f $gcc_cv_binutils_srcdir/configure.in \
2351 && test -f ../binutils/Makefile \
2352 && test x$build = x$host; then
2353 # Single tree build which includes binutils.
2354 gcc_cv_readelf=../binutils/readelf$build_exeext
2355 elif test -x readelf$build_exeext; then
2356 gcc_cv_readelf=./readelf$build_exeext
2358 AC_PATH_PROG(gcc_cv_readelf, readelf)
2361 AC_MSG_CHECKING(what readelf to use)
2362 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2363 # Single tree build which includes binutils.
2364 AC_MSG_RESULT(newly built readelf)
2365 elif test x$gcc_cv_readelf = x; then
2366 AC_MSG_RESULT(not found)
2368 AC_MSG_RESULT($gcc_cv_readelf)
2371 # Figure out what assembler alignment features are present.
2372 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2376 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2377 [Define if your assembler supports .balign and .p2align.])])
2379 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2382 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2383 [Define if your assembler supports specifying the maximum number
2384 of bytes to skip when using the GAS .p2align command.])])
2386 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2389 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2390 [Define if your assembler supports .literal16.])])
2392 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2394 [conftest_label1: .word 0
2396 conftest_label2: .word 0
2398 [if test x$gcc_cv_nm != x; then
2399 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2400 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2401 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2403 else gcc_cv_as_subsection_m1=yes
2405 rm -f conftest.nm1 conftest.nm2
2407 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2408 [Define if your assembler supports .subsection and .subsection -1 starts
2409 emitting at the beginning of your section.])])
2411 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2414 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2416 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2418 [ .weakref foobar, barfnot],,
2419 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2421 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2424 .NSUBSPA $CODE$,COMDAT],,
2425 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2427 # .hidden needs to be supported in both the assembler and the linker,
2428 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2429 # This is irritatingly difficult to feature test for; we have to check the
2430 # date string after the version number. If we've got an in-tree
2431 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2433 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2434 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2438 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2439 # STV_HIDDEN, so disable .hidden support if so.
2441 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2442 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2443 cat > conftest.s <<EOF
2450 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2451 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2452 grep '\.hidden default' > /dev/null; then
2455 gcc_cv_as_hidden=yes
2458 # Assume bug is present if objdump is missing.
2463 gcc_cv_as_hidden=yes
2468 # Darwin as has some visibility support, though with a different syntax.
2469 gcc_cv_as_hidden=yes
2473 # gnu_indirect_function type is an extension proposed at
2474 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2475 # selection of function implementation
2476 AC_ARG_ENABLE(gnu-indirect-function,
2477 [AS_HELP_STRING([--enable-gnu-indirect-function],
2478 [enable the use of the @gnu_indirect_function to glibc systems])],
2479 [case $enable_gnu_indirect_function in
2481 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2482 Valid choices are 'yes' and 'no'.]) ;;
2484 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2486 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2487 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2488 [Define if your system supports gnu indirect functions.])
2492 if test $in_tree_ld != yes ; then
2493 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2494 if echo "$ld_ver" | grep GNU > /dev/null; then
2495 if test x"$ld_is_gold" = xyes; then
2496 # GNU gold --version looks like this:
2498 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2500 # We extract the binutils version which is more familiar and specific
2501 # than the gold version.
2502 ld_vers=`echo $ld_ver | sed -n \
2503 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2505 # GNU ld --version looks like this:
2507 # GNU ld (GNU Binutils) 2.21.51.20110225
2508 ld_vers=`echo $ld_ver | sed -n \
2509 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2511 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2512 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2513 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2514 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2518 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2521 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2522 # /usr/ccs/bin/ld has been configured.
2523 ld_ver=`$gcc_cv_ld -V 2>&1`
2524 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2525 ld_vers=`echo $ld_ver | sed -n \
2526 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2527 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2528 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2536 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2537 [[if test $in_tree_ld = yes ; then
2539 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2540 && test $in_tree_ld_is_elf = yes; then
2541 gcc_cv_ld_hidden=yes
2544 gcc_cv_ld_hidden=yes
2545 if test x"$ld_is_gold" = xyes; then
2547 elif echo "$ld_ver" | grep GNU > /dev/null; then
2549 mmix-knuth-mmixware)
2550 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2554 if test 0"$ld_date" -lt 20020404; then
2555 if test -n "$ld_date"; then
2556 # If there was date string, but was earlier than 2002-04-04, fail
2558 elif test -z "$ld_vers"; then
2559 # If there was no date string nor ld version number, something is wrong
2562 test -z "$ld_vers_patch" && ld_vers_patch=0
2563 if test "$ld_vers_major" -lt 2; then
2565 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2566 gcc_cv_ld_hidden="no"
2567 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2575 # Darwin ld has some visibility support.
2576 gcc_cv_ld_hidden=yes
2578 hppa64*-*-hpux* | ia64*-*-hpux*)
2579 gcc_cv_ld_hidden=yes
2581 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2582 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2583 # .symbolic was only added in Solaris 9 12/02.
2584 gcc_cv_ld_hidden=yes
2592 libgcc_visibility=no
2593 AC_SUBST(libgcc_visibility)
2594 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2595 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2596 libgcc_visibility=yes
2597 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2598 [Define if your assembler and linker support .hidden.])
2601 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2602 gcc_cv_ld_ro_rw_mix=unknown
2603 if test $in_tree_ld = yes ; then
2604 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2605 && test $in_tree_ld_is_elf = yes; then
2606 gcc_cv_ld_ro_rw_mix=read-write
2608 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2609 echo '.section myfoosect, "a"' > conftest1.s
2610 echo '.section myfoosect, "aw"' > conftest2.s
2611 echo '.byte 1' >> conftest2.s
2612 echo '.section myfoosect, "a"' > conftest3.s
2613 echo '.byte 0' >> conftest3.s
2614 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2615 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2616 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2617 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2618 conftest2.o conftest3.o > /dev/null 2>&1; then
2619 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2620 | sed -e '/myfoosect/!d' -e N`
2621 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2622 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2623 gcc_cv_ld_ro_rw_mix=read-only
2625 gcc_cv_ld_ro_rw_mix=read-write
2630 rm -f conftest.* conftest[123].*
2633 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2634 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2635 [Define if your linker links a mix of read-only
2636 and read-write sections into a read-write section.])
2638 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2640 gcc_AC_INITFINI_ARRAY
2642 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2643 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2651 [[# GAS versions before 2.11 do not support uleb128,
2652 # despite appearing to.
2653 # ??? There exists an elf-specific test that will crash
2654 # the assembler. Perhaps it's better to figure out whether
2655 # arbitrary sections are supported and try the test.
2656 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2657 if echo "$as_ver" | grep GNU > /dev/null; then
2658 as_vers=`echo $as_ver | sed -n \
2659 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2660 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2661 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2662 if test $as_major -eq 2 && test $as_minor -lt 11
2664 else gcc_cv_as_leb128=yes
2667 [AC_DEFINE(HAVE_AS_LEB128, 1,
2668 [Define if your assembler supports .sleb128 and .uleb128.])])
2670 # Check if we have assembler support for unwind directives.
2671 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2678 .cfi_escape 1, 2, 3, 4, 5
2682 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2683 # read-only and read-write sections, we need to make sure that the
2684 # assembler used emits read-write .eh_frame sections.
2685 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2686 if test "x$gcc_cv_objdump" != x; then
2687 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2688 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2689 gcc_cv_as_cfi_directive=no
2692 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2693 # On Solaris/x86, make sure that GCC and gas agree on using
2694 # read-only .eh_frame sections for 64-bit.
2695 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2696 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2697 sed -e /.eh_frame/!d -e N | \
2698 grep READONLY > /dev/null; then
2699 gcc_cv_as_cfi_directive=yes
2701 gcc_cv_as_cfi_directive=no
2705 gcc_cv_as_cfi_directive=yes
2710 # no objdump, err on the side of caution
2711 gcc_cv_as_cfi_directive=no
2714 gcc_cv_as_cfi_directive=yes
2718 gcc_cv_as_cfi_directive=yes
2721 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2722 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2726 .cfi_adjust_cfa_offset 64
2728 .cfi_adjust_cfa_offset 128
2731 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2732 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2733 gcc_cv_as_cfi_advance_working=yes
2737 # no objdump, err on the side of caution
2738 gcc_cv_as_cfi_advance_working=no
2740 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2741 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2742 [`if test $gcc_cv_as_cfi_directive = yes \
2743 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2744 [Define 0/1 if your assembler supports CFI directives.])
2746 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2747 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2748 gcc_cv_as_cfi_personality_directive, ,,
2751 .cfi_personality 0, symbol
2753 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2754 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2755 then echo 1; else echo 0; fi`],
2756 [Define 0/1 if your assembler supports .cfi_personality.])
2758 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2759 gcc_cv_as_cfi_sections_directive, ,,
2761 .cfi_sections .debug_frame, .eh_frame
2765 win32 | pe | cygwin* | mingw32* | uwin*)
2766 # Need to check that we generated the correct relocation for the
2767 # .debug_frame section. This was fixed for binutils 2.21.
2768 gcc_cv_as_cfi_sections_directive=no
2769 if test "x$gcc_cv_objdump" != x; then
2770 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2771 grep secrel > /dev/null; then
2772 gcc_cv_as_cfi_sections_directive=yes
2777 gcc_cv_as_cfi_sections_directive=yes
2780 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2781 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2782 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2783 then echo 1; else echo 0; fi`],
2784 [Define 0/1 if your assembler supports .cfi_sections.])
2786 # GAS versions up to and including 2.11.0 may mis-optimize
2788 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2796 .section .eh_frame,"aw",@progbits
2798 .4byte .LECIE1-.LSCIE1
2812 .4byte .LEFDE1-.LASFDE1
2814 .4byte .LASFDE1-__FRAME_BEGIN__
2822 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2823 cat > conftest.lit <<EOF
2824 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2825 0010 01000000 12000000 18000000 00000000 ................
2826 0020 08000000 04080000 0044 .........D @&t@
2828 cat > conftest.big <<EOF
2829 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2830 0010 00000001 00000012 00000018 00000000 ................
2831 0020 00000008 04000000 0844 .........D @&t@
2833 # If the assembler didn't choke, and we can objdump,
2834 # and we got the correct data, then succeed.
2835 # The text in the here-document typically retains its unix-style line
2836 # endings, while the output of objdump will use host line endings.
2837 # Therefore, use diff -b for the comparisons.
2838 if test x$gcc_cv_objdump != x \
2839 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2840 | tail -3 > conftest.got \
2841 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2842 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2844 gcc_cv_as_eh_frame=yes
2845 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2846 gcc_cv_as_eh_frame=buggy
2848 # Uh oh, what do we do now?
2849 gcc_cv_as_eh_frame=no
2852 if test $gcc_cv_as_eh_frame = buggy; then
2853 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2854 [Define if your assembler mis-optimizes .eh_frame data.])
2857 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2858 [elf,2,12,0], [--fatal-warnings],
2859 [.section .rodata.str, "aMS", @progbits, 1])
2860 if test $gcc_cv_as_shf_merge = no; then
2861 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2862 [elf,2,12,0], [--fatal-warnings],
2863 [.section .rodata.str, "aMS", %progbits, 1])
2865 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2866 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2867 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2869 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2870 gcc_cv_as_comdat_group,
2871 [elf,2,16,0], [--fatal-warnings],
2872 [.section .text,"axG",@progbits,.foo,comdat])
2873 if test $gcc_cv_as_comdat_group = yes; then
2874 gcc_cv_as_comdat_group_percent=no
2875 gcc_cv_as_comdat_group_group=no
2877 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2878 gcc_cv_as_comdat_group_percent,
2879 [elf,2,16,0], [--fatal-warnings],
2880 [.section .text,"axG",%progbits,.foo,comdat])
2881 if test $gcc_cv_as_comdat_group_percent = yes; then
2882 gcc_cv_as_comdat_group_group=no
2884 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2885 gcc_cv_as_comdat_group_group=no
2888 # Sun as uses a completely different syntax.
2893 .group foo,".text%foo",#comdat
2894 .section ".text%foo", #alloc,#execinstr,#progbits
2899 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2901 .group foo,.text%foo,#comdat
2902 .section .text%foo, "ax", @progbits
2908 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2909 gcc_cv_as_comdat_group_group,
2915 if test x"$ld_is_gold" = xyes; then
2917 elif test $in_tree_ld = yes ; then
2919 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2920 && test $in_tree_ld_is_elf = yes; then
2923 elif echo "$ld_ver" | grep GNU > /dev/null; then
2925 if test 0"$ld_date" -lt 20050308; then
2926 if test -n "$ld_date"; then
2927 # If there was date string, but was earlier than 2005-03-08, fail
2929 elif test "$ld_vers_major" -lt 2; then
2931 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2938 *-*-solaris2.1[1-9]*)
2940 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2941 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2944 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2945 # least ld version 1.2267.
2946 if test "$ld_vers_major" -gt 1; then
2948 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2950 elif test "$ld_vers_minor" -ge 2267; then
2955 # Assume linkers other than GNU ld don't support COMDAT group.
2961 # Allow overriding the automatic COMDAT group tests above.
2962 AC_ARG_ENABLE(comdat,
2963 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2964 [comdat_group="$enable_comdat"])
2965 if test $comdat_group = no; then
2966 gcc_cv_as_comdat_group=no
2967 gcc_cv_as_comdat_group_percent=no
2968 gcc_cv_as_comdat_group_group=no
2970 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2971 [`if test $gcc_cv_as_comdat_group = yes \
2972 || test $gcc_cv_as_comdat_group_percent = yes \
2973 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2974 [Define 0/1 if your assembler and linker support COMDAT groups.])
2976 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2977 gcc_cv_as_discriminator,
2981 .loc 1 1 0 discriminator 1],,
2982 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2983 [Define if your assembler supports the .loc discriminator sub-directive.])])
2985 # Thread-local storage - the check is heavily parameterized.
2994 .section ".tdata","awT",@progbits
2997 ldq $27,__tls_get_addr($29) !literal!1
2998 lda $16,foo($29) !tlsgd!1
2999 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3000 ldq $27,__tls_get_addr($29) !literal!2
3001 lda $16,foo($29) !tlsldm!2
3002 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3003 ldq $1,foo($29) !gotdtprel
3004 ldah $2,foo($29) !dtprelhi
3005 lda $3,foo($2) !dtprello
3006 lda $4,foo($29) !dtprel
3007 ldq $1,foo($29) !gottprel
3008 ldah $2,foo($29) !tprelhi
3009 lda $3,foo($2) !tprello
3010 lda $4,foo($29) !tprel'
3013 tls_as_opt=--fatal-warnings
3015 cris-*-*|crisv32-*-*)
3017 .section ".tdata","awT",@progbits
3024 tls_as_opt=--fatal-warnings
3028 .section ".tdata","awT",@progbits
3040 .section ".tdata","awT",@progbits
3044 addil LT%foo-$tls_gdidx$,gp
3045 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3048 addil LT%foo-$tls_ldidx$,gp
3050 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3051 addil LR%foo-$tls_dtpoff$,%ret0
3052 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3054 addil LT%foo-$tls_ieoff$,gp
3055 ldw RT%foo-$tls_ieoff$(%r1),%t2
3058 addil LR%foo-$tls_leoff$,%t1
3059 ldo RR%foo-$tls_leoff$(%r1),%t2'
3062 tls_as_opt=--fatal-warnings
3066 .section ".tdata","awT",%progbits
3077 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
3079 i[34567]86-*-solaris2.*)
3081 tga_func=___tls_get_addr
3083 x86_64-*-solaris2.1[0-9]*)
3085 tga_func=__tls_get_addr
3091 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3093 .section .tdata,"awt",@progbits'
3097 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3098 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3102 .section ".tdata","awT",@progbits'
3105 tls_as_opt="--fatal-warnings"
3107 conftest_s="$conftest_s
3111 leal foo@tlsgd(,%ebx,1), %eax
3112 leal foo@tlsldm(%ebx), %eax
3113 leal foo@dtpoff(%eax), %edx
3114 movl foo@gottpoff(%ebx), %eax
3115 subl foo@gottpoff(%ebx), %eax
3116 addl foo@gotntpoff(%ebx), %eax
3117 movl foo@indntpoff, %eax
3118 movl \$foo@tpoff, %eax
3119 subl \$foo@tpoff, %eax
3120 leal foo@ntpoff(%ecx), %eax"
3124 .section ".tdata","awT",@progbits
3128 leaq foo@TLSGD(%rip), %rdi
3129 leaq foo@TLSLD(%rip), %rdi
3130 leaq foo@DTPOFF(%rax), %rdx
3131 movq foo@GOTTPOFF(%rip), %rax
3132 movq $foo@TPOFF, %rax'
3135 tls_as_opt=--fatal-warnings
3139 .section ".tdata","awT",@progbits
3142 addl r16 = @ltoff(@dtpmod(foo#)), gp
3143 addl r17 = @ltoff(@dtprel(foo#)), gp
3144 addl r18 = @ltoff(@tprel(foo#)), gp
3145 addl r19 = @dtprel(foo#), gp
3146 adds r21 = @dtprel(foo#), r13
3147 movl r23 = @dtprel(foo#)
3148 addl r20 = @tprel(foo#), gp
3149 adds r22 = @tprel(foo#), r13
3150 movl r24 = @tprel(foo#)'
3153 tls_as_opt=--fatal-warnings
3157 .section .tdata,"awT",@progbits
3161 addik r5,r20,x@TLSGD
3162 addik r5,r20,x@TLSLDM'
3165 tls_as_opt='--fatal-warnings'
3169 .section .tdata,"awT",@progbits
3173 addiu $4, $28, %tlsgd(x)
3174 addiu $4, $28, %tlsldm(x)
3175 lui $4, %dtprel_hi(x)
3176 addiu $4, $4, %dtprel_lo(x)
3177 lw $4, %gottprel(x)($28)
3178 lui $4, %tprel_hi(x)
3179 addiu $4, $4, %tprel_lo(x)'
3182 tls_as_opt='-32 --fatal-warnings'
3186 .section .tdata,"awT",@progbits
3191 move.l x@TLSGD(%a5),%a0
3192 move.l x@TLSLDM(%a5),%a0
3193 move.l x@TLSLDO(%a5),%a0
3194 move.l x@TLSIE(%a5),%a0
3195 move.l x@TLSLE(%a5),%a0'
3198 tls_as_opt='--fatal-warnings'
3202 .section ".tdata","awT",%progbits
3206 add x0, x0, #:tlsgd_lo12:x
3211 tls_as_opt='--fatal-warnings'
3215 .extern __get_tpointer
3233 .section ".tdata","awT",@progbits
3241 addi 3,2,ld0@got@tlsgd
3247 addi 3,2,x1@got@tlsld
3253 addis 9,3,x2@dtprel@ha
3254 addi 9,9,x2@dtprel@l
3257 ld 9,x3@got@dtprel(2)
3263 tls_as_opt="-a64 --fatal-warnings"
3267 .section ".tdata","awT",@progbits
3275 addi 3,31,ld0@got@tlsgd
3277 addi 3,31,x1@got@tlsld
3280 addis 9,3,x2@dtprel@ha
3281 addi 9,9,x2@dtprel@l
3282 lwz 9,x3@got@tprel(31)
3285 addis 9,2,x2@tprel@ha
3286 addi 9,9,x2@tprel@l'
3289 tls_as_opt="-a32 --fatal-warnings"
3293 .section ".tdata","awT",@progbits
3302 l %r1,foo@GOTNTPOFF(%r12)
3303 l %r1,0(%r1):tls_load:foo
3304 bas %r14,0(%r1,%r13):tls_gdcall:foo
3305 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3308 tls_as_opt="-m31 --fatal-warnings"
3312 .section ".tdata","awT",@progbits
3320 lg %r1,foo@GOTNTPOFF(%r12)
3321 larl %r1,foo@INDNTPOFF
3322 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3323 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3326 tls_as_opt="-m64 -Aesame --fatal-warnings"
3328 sh-*-* | sh[34]-*-*)
3330 .section ".tdata","awT",@progbits
3340 tls_as_opt=--fatal-warnings
3344 sparc*-sun-solaris2.*)
3346 tga_func=__tls_get_addr
3352 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3354 .section ".tdata",#alloc,#write,#tls'
3359 .section ".tdata","awT",@progbits'
3362 tls_as_opt="-32 --fatal-warnings"
3364 conftest_s="$conftest_s
3367 sethi %tgd_hi22(foo), %o0
3368 add %o0, %tgd_lo10(foo), %o1
3369 add %l7, %o1, %o0, %tgd_add(foo)
3370 call __tls_get_addr, %tgd_call(foo)
3371 sethi %tldm_hi22(foo), %l1
3372 add %l1, %tldm_lo10(foo), %l2
3373 add %l7, %l2, %o0, %tldm_add(foo)
3374 call __tls_get_addr, %tldm_call(foo)
3375 sethi %tldo_hix22(foo), %l3
3376 xor %l3, %tldo_lox10(foo), %l4
3377 add %o0, %l4, %l5, %tldo_add(foo)
3378 sethi %tie_hi22(foo), %o3
3379 add %o3, %tie_lo10(foo), %o3
3380 ld [%l7 + %o3], %o2, %tie_ld(foo)
3381 add %g7, %o2, %o4, %tie_add(foo)
3382 sethi %tle_hix22(foo), %l1
3383 xor %l1, %tle_lox10(foo), %o5
3384 ld [%g7 + %o5], %o1"
3388 .section ".tdata","awT",@progbits
3391 addli r0, zero, tls_gd(foo)
3392 auli r0, zero, tls_gd_ha16(foo)
3393 addli r0, r0, tls_gd_lo16(foo)
3395 addli r0, zero, tls_ie(foo)
3396 auli r0, r0, tls_ie_ha16(foo)
3397 addli r0, r0, tls_ie_lo16(foo)'
3400 tls_as_opt="--fatal-warnings"
3404 .section ".tdata","awT",@progbits
3407 shl16insli r0, zero, hw0_last_tls_gd(foo)
3408 shl16insli r0, zero, hw1_last_tls_gd(foo)
3409 shl16insli r0, r0, hw0_tls_gd(foo)
3411 shl16insli r0, zero, hw1_last_tls_ie(foo)
3412 shl16insli r0, r0, hw0_tls_ie(foo)'
3415 tls_as_opt="--fatal-warnings"
3419 .section ".tdata","awT",@progbits
3422 movi a8, foo@TLSFUNC
3423 movi a10, foo@TLSARG
3424 callx8.tls a8, foo@TLSCALL'
3431 if test "x$enable_tls" = xno ; then
3432 : # TLS explicitly disabled.
3433 elif test "x$enable_tls" = xyes ; then
3434 set_have_as_tls=yes # TLS explicitly enabled.
3435 elif test -z "$tls_first_major"; then
3436 : # If we don't have a check, assume no support.
3438 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3439 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3440 [set_have_as_tls=yes])
3443 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3444 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3445 # Sun style that Sun ld and GCC don't support any longer.
3447 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3449 # Check ld and ld.so.1 TLS support.
3450 if echo "$ld_ver" | grep GNU > /dev/null; then
3451 # Assume all interesting versions of GNU ld have TLS support.
3452 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3456 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3458 min_tls_ld_vers_minor=374
3460 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3461 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3462 min_tls_ld_vers_minor=343
3465 if test "$ld_vers_major" -gt 1 || \
3466 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3472 AC_MSG_RESULT($ld_tls_support)
3475 save_LDFLAGS="$LDFLAGS"
3479 AC_MSG_CHECKING(library containing $tga_func)
3480 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3481 # (32-bit x86) only lived in libthread, so check for that. Keep
3482 # set_have_as_tls if found, disable if not.
3483 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3484 # Clear LIBS if we cannot support TLS.
3485 if test $set_have_as_tls = no; then
3488 # Always define LIB_TLS_SPEC, even without TLS support.
3489 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3490 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3491 AC_MSG_RESULT($LIBS)
3494 LDFLAGS="$save_LDFLAGS"
3497 if test $set_have_as_tls = yes ; then
3498 AC_DEFINE(HAVE_AS_TLS, 1,
3499 [Define if your assembler and linker support thread-local storage.])
3502 # Target-specific assembler checks.
3504 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3505 gcc_cv_ld_static_dynamic=no
3506 gcc_cv_ld_static_option='-Bstatic'
3507 gcc_cv_ld_dynamic_option='-Bdynamic'
3508 if test $in_tree_ld = yes ; then
3509 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3510 gcc_cv_ld_static_dynamic=yes
3512 elif test x$gcc_cv_ld != x; then
3513 # Check if linker supports -Bstatic/-Bdynamic option
3514 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3515 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3516 gcc_cv_ld_static_dynamic=yes
3519 # AIX ld uses -b flags
3520 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3521 gcc_cv_ld_static_dynamic=yes
3522 gcc_cv_ld_static_option="-bstatic"
3523 gcc_cv_ld_dynamic_option="-bdynamic"
3525 # HP-UX ld uses -a flags to select between shared and archive.
3527 if test x"$gnu_ld" = xno; then
3528 gcc_cv_ld_static_dynamic=yes
3529 gcc_cv_ld_static_option="-aarchive_shared"
3530 gcc_cv_ld_dynamic_option="-adefault"
3533 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3535 gcc_cv_ld_static_dynamic=yes
3540 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3541 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3542 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3543 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3544 [Define to the linker option to disable use of shared objects.])
3545 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3546 [Define to the linker option to enable use of shared objects.])
3548 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3550 if test x"$demangler_in_ld" = xyes; then
3551 AC_MSG_CHECKING(linker --demangle support)
3552 gcc_cv_ld_demangle=no
3553 if test $in_tree_ld = yes; then
3554 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3555 gcc_cv_ld_demangle=yes
3557 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3558 # Check if the GNU linker supports --demangle option
3559 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3560 gcc_cv_ld_demangle=yes
3563 if test x"$gcc_cv_ld_demangle" = xyes; then
3564 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3565 [Define if your linker supports --demangle option.])
3567 AC_MSG_RESULT($gcc_cv_ld_demangle)
3570 AC_MSG_CHECKING(linker plugin support)
3572 if test -f liblto_plugin.la; then
3573 save_ld_ver="$ld_ver"
3574 save_ld_vers_major="$ld_vers_major"
3575 save_ld_vers_minor="$ld_vers_minor"
3576 save_ld_is_gold="$ld_is_gold"
3580 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3582 # FIXME: ld_is_gold?
3583 ld_vers_major="$gcc_cv_gld_major_version"
3584 ld_vers_minor="$gcc_cv_gld_minor_version"
3586 # Determine plugin linker version.
3587 # FIXME: Partial duplicate from above, generalize.
3589 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3590 if echo "$ld_ver" | grep GNU > /dev/null; then
3591 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3593 ld_vers=`echo $ld_ver | sed -n \
3594 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3596 ld_vers=`echo $ld_ver | sed -n \
3597 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3599 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3600 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3605 # Determine plugin support.
3606 if echo "$ld_ver" | grep GNU > /dev/null; then
3607 # Require GNU ld or gold 2.21+ for plugin support by default.
3608 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3610 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3611 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3616 ld_ver="$save_ld_ver"
3617 ld_vers_major="$save_ld_vers_major"
3618 ld_vers_minor="$save_ld_vers_minor"
3619 ld_is_gold="$save_ld_is_gold"
3621 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3622 [Define to the level of your linker's plugin support.])
3623 AC_MSG_RESULT($gcc_cv_lto_plugin)
3627 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3628 [-mabi=lp64], [.text],,,)
3629 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3630 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3631 [Define if your assembler supports the -mabi option.])
3633 if test x$with_abi = xilp32; then
3634 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3635 Upgrade the Assembler.])
3637 if test x"$with_multilib_list" = xdefault; then
3638 TM_MULTILIB_CONFIG=lp64
3640 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3641 for aarch64_multilib in ${aarch64_multilibs}; do
3642 case ${aarch64_multilib} in
3644 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3645 Upgrade the Assembler.])
3655 # All TARGET_ABI_OSF targets.
3656 alpha*-*-linux* | alpha*-*-*bsd*)
3657 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3658 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3661 extbl $3, $2, $3 !lituse_bytoff!1
3662 ldq $2, a($29) !literal!1
3663 ldq $4, b($29) !literal!2
3664 ldq_u $3, 0($2) !lituse_base!1
3665 ldq $27, f($29) !literal!5
3666 jsr $26, ($27), f !lituse_jsr!5
3667 ldah $29, 0($26) !gpdisp!3
3668 lda $0, c($29) !gprel
3669 ldah $1, d($29) !gprelhigh
3670 lda $1, d($1) !gprellow
3671 lda $29, 0($29) !gpdisp!3],,
3672 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3673 [Define if your assembler supports explicit relocations.])])
3674 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3675 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3678 ldq $27, a($29) !literal!1
3679 jsr $26, ($27), a !lituse_jsrdirect!1],,
3680 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3681 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3685 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3686 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3687 [-no-mul-bug-abort], [.text],,
3688 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3689 [Define if your assembler supports the -no-mul-bug-abort option.])])
3693 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3694 [.register %g2, #scratch],,
3695 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3696 [Define if your assembler supports .register.])])
3698 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3699 [.section "nobits",#alloc,#write,#nobits
3700 .section "progbits",#alloc,#write,#progbits])
3701 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3702 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3703 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3705 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3707 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3708 [Define if your assembler supports -relax option.])])
3710 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3711 gcc_cv_as_sparc_gotdata_op,,
3718 sethi %gdop_hix22(foo), %g1
3719 xor %g1, %gdop_lox10(foo), %g1
3720 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3721 [if test x$gcc_cv_ld != x \
3722 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3723 if test x$gcc_cv_objdump != x; then
3724 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3725 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3726 gcc_cv_as_sparc_gotdata_op=no
3728 gcc_cv_as_sparc_gotdata_op=yes
3733 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3734 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3736 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3737 gcc_cv_as_sparc_ua_pcrel,,
3745 .uaword %r_disp32(foo)],
3746 [if test x$gcc_cv_ld != x \
3747 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3748 gcc_cv_as_sparc_ua_pcrel=yes
3751 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3752 [Define if your assembler and linker support unaligned PC relative relocs.])
3754 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3755 gcc_cv_as_sparc_ua_pcrel_hidden,,
3760 .uaword %r_disp32(foo)
3761 .byte 0x32, 0x33, 0x34
3766 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3767 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3768 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3769 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3770 if $gcc_cv_objdump -R conftest 2> /dev/null \
3771 | grep 'DISP32' > /dev/null 2>&1; then
3774 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3778 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3779 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3780 ]) # unaligned pcrel relocs
3782 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3783 gcc_cv_as_sparc_offsetable_lo10,,
3786 or %g1, %lo(ab) + 12, %g1
3787 or %g1, %lo(ab + 12), %g1],
3788 [if test x$gcc_cv_objdump != x \
3789 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3790 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3791 gcc_cv_as_sparc_offsetable_lo10=yes
3793 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3794 [Define if your assembler supports offsetable %lo().])])
3796 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3797 gcc_cv_as_sparc_fmaf,,
3800 .register %g2, #scratch
3801 .register %g3, #scratch
3803 fmaddd %f0, %f2, %f4, %f6
3804 addxccc %g1, %g2, %g3
3805 fsrl32 %f2, %f4, %f8
3806 fnaddd %f10, %f12, %f14],,
3807 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3808 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3810 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3811 gcc_cv_as_sparc_sparc4,,
3814 .register %g2, #scratch
3815 .register %g3, #scratch
3818 1: cwbneg %g2, %g3, 1f
3821 aes_kexpand0 %f4, %f6, %f8
3822 des_round %f38, %f40, %f42, %f44
3823 camellia_f %f54, %f56, %f58, %f60
3824 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3825 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3826 [Define if your assembler supports SPARC4 instructions.])])
3828 gcc_GAS_CHECK_FEATURE([LEON instructions],
3829 gcc_cv_as_sparc_leon,,
3832 .register %g2, #scratch
3833 .register %g3, #scratch
3837 cas [[%g2]], %g3, %g1],,
3838 [AC_DEFINE(HAVE_AS_LEON, 1,
3839 [Define if your assembler supports LEON instructions.])])
3843 i[34567]86-*-* | x86_64-*-*)
3847 # Full C++ conformance when using a shared libstdc++-v3 requires some
3848 # support from the Cygwin DLL, which in more recent versions exports
3849 # wrappers to aid in interposing and redirecting operators new, delete,
3850 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3851 # are configuring for a version of Cygwin that exports the wrappers.
3852 if test x$host = x$target && test x$host_cpu = xi686; then
3853 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3855 # Can't check presence of libc functions during cross-compile, so
3856 # we just have to assume we're building for an up-to-date target.
3857 gcc_ac_cygwin_dll_wrappers=yes
3859 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3860 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3861 [Define if you want to generate code by default that assumes that the
3862 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3865 cygwin* | pe | mingw32* | interix*)
3866 # Recent binutils allows the three-operand form of ".comm" on PE. This
3867 # definition is used unconditionally to initialise the default state of
3868 # the target option variable that governs usage of the feature.
3869 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3870 [2,19,52],,[.comm foo,1,32])
3871 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3872 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3873 [Define if your assembler supports specifying the alignment
3874 of objects allocated using the GAS .comm command.])
3875 # Used for DWARF 2 in PE
3876 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3877 gcc_cv_as_ix86_pe_secrel32,
3883 [if test x$gcc_cv_ld != x \
3884 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3885 gcc_cv_as_ix86_pe_secrel32=yes
3888 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3889 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3890 # Test if the assembler supports the extended form of the .section
3891 # directive that specifies section alignment. LTO support uses this,
3892 # but normally only after installation, so we warn but don't fail the
3893 # configure if LTO is enabled but the assembler does not support it.
3894 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3895 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3896 if test x$gcc_cv_as_section_has_align != xyes; then
3897 case ",$enable_languages," in
3899 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3903 # Test if the assembler supports the section flag 'e' for specifying
3904 # an excluded section.
3905 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3909 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3910 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3911 [Define if your assembler supports specifying the section flag e.])
3915 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3916 gcc_cv_as_ix86_filds,,,
3917 [filds mem; fists mem],,
3918 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3919 [Define if your assembler uses filds and fists mnemonics.])])
3921 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3922 gcc_cv_as_ix86_fildq,,,
3923 [fildq mem; fistpq mem],,
3924 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3925 [Define if your assembler uses fildq and fistq mnemonics.])])
3927 gcc_GAS_CHECK_FEATURE([cmov syntax],
3928 gcc_cv_as_ix86_cmov_sun_syntax,,,
3929 [cmovl.l %edx, %eax],,
3930 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3931 [Define if your assembler supports the Sun syntax for cmov.])])
3933 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3934 gcc_cv_as_ix86_ffreep,,,
3936 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3937 [Define if your assembler supports the ffreep mnemonic.])])
3939 gcc_GAS_CHECK_FEATURE([.quad directive],
3940 gcc_cv_as_ix86_quad,,,
3942 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3943 [Define if your assembler supports the .quad directive.])])
3945 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3946 gcc_cv_as_ix86_sahf,,,
3949 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3950 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3952 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3953 gcc_cv_as_ix86_interunit_movq,,,
3957 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3958 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3959 [Define if your assembler supports interunit movq mnemonic.])
3961 gcc_GAS_CHECK_FEATURE([hle prefixes],
3962 gcc_cv_as_ix86_hle,,,
3963 [lock xacquire cmpxchg %esi, (%ecx)],,
3964 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3965 [Define if your assembler supports HLE prefixes.])])
3967 gcc_GAS_CHECK_FEATURE([swap suffix],
3968 gcc_cv_as_ix86_swap,,,
3969 [movl.s %esp, %ebp],,
3970 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3971 [Define if your assembler supports the swap suffix.])])
3973 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3974 gcc_cv_as_ix86_diff_sect_delta,,,
3982 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3983 [Define if your assembler supports the subtraction of symbols in different sections.])])
3985 # These two are used unconditionally by i386.[ch]; it is to be defined
3986 # to 1 if the feature is present, 0 otherwise.
3987 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3988 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3994 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3995 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3996 [Define true if the assembler supports '.long foo@GOTOFF'.])
3998 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3999 gcc_cv_as_ix86_rep_lock_prefix,,,
4005 lock addl %edi, (%eax,%esi)
4006 lock orl $0, (%esp)],,
4007 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4008 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4010 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4011 gcc_cv_as_ix86_tlsgdplt,,,
4012 [call tls_gd@tlsgdplt],
4013 [if test x$gcc_cv_ld != x \
4014 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4015 gcc_cv_as_ix86_tlsgdplt=yes
4018 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4019 [Define if your assembler and linker support @tlsgdplt.])])
4021 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4022 gcc_cv_as_ix86_tlsldmplt,,,
4024 call tls_ld@tlsldmplt],
4025 [if test x$gcc_cv_ld != x \
4026 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4027 gcc_cv_as_ix86_tlsldmplt=yes
4030 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
4031 [Define if your assembler and linker support @tlsldmplt.])])
4036 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4037 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4039 addl r15 = @ltoffx(x#), gp
4041 ld8.mov r16 = [[r15]], x#],,
4042 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4043 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4049 *-*-aix*) conftest_s=' .machine "pwr5"
4053 gcc_GAS_CHECK_FEATURE([.machine directive support],
4054 gcc_cv_as_machine_directive,,,
4055 [ .machine ppc7400])
4056 if test x$gcc_cv_as_machine_directive != xyes; then
4057 echo "*** This target requires an assembler supporting \".machine\"" >&2
4058 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4059 test x$build = x$target && exit 1
4063 *) conftest_s=' .machine power4
4068 gcc_GAS_CHECK_FEATURE([mfcr field support],
4069 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4071 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4072 [Define if your assembler supports mfcr field.])])
4075 *-*-aix*) conftest_s=' .machine "pwr5"
4078 *) conftest_s=' .machine power5
4083 gcc_GAS_CHECK_FEATURE([popcntb support],
4084 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4086 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4087 [Define if your assembler supports popcntb field.])])
4090 *-*-aix*) conftest_s=' .machine "pwr5x"
4093 *) conftest_s=' .machine power5
4098 gcc_GAS_CHECK_FEATURE([fp round support],
4099 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4101 [AC_DEFINE(HAVE_AS_FPRND, 1,
4102 [Define if your assembler supports fprnd.])])
4105 *-*-aix*) conftest_s=' .machine "pwr6"
4108 *) conftest_s=' .machine power6
4113 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4114 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4116 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4117 [Define if your assembler supports mffgpr and mftgpr.])])
4120 *-*-aix*) conftest_s=' .csect .text[[PR]]
4122 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4126 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4127 *) conftest_s=' .text
4129 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4132 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4133 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4135 [AC_DEFINE(HAVE_AS_REL16, 1,
4136 [Define if your assembler supports R_PPC_REL16 relocs.])])
4139 *-*-aix*) conftest_s=' .machine "pwr6"
4142 *) conftest_s=' .machine power6
4147 gcc_GAS_CHECK_FEATURE([compare bytes support],
4148 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4150 [AC_DEFINE(HAVE_AS_CMPB, 1,
4151 [Define if your assembler supports cmpb.])])
4154 *-*-aix*) conftest_s=' .machine "pwr6"
4157 *) conftest_s=' .machine power6
4162 gcc_GAS_CHECK_FEATURE([decimal float support],
4163 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4165 [AC_DEFINE(HAVE_AS_DFP, 1,
4166 [Define if your assembler supports DFP instructions.])])
4169 *-*-aix*) conftest_s=' .machine "pwr7"
4172 *) conftest_s=' .machine power7
4177 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4178 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4180 [AC_DEFINE(HAVE_AS_VSX, 1,
4181 [Define if your assembler supports VSX instructions.])])
4184 *-*-aix*) conftest_s=' .machine "pwr7"
4187 *) conftest_s=' .machine power7
4192 gcc_GAS_CHECK_FEATURE([popcntd support],
4193 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4195 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4196 [Define if your assembler supports POPCNTD instructions.])])
4199 *-*-aix*) conftest_s=' .machine "pwr8"
4200 .csect .text[[PR]]';;
4201 *) conftest_s=' .machine power8
4205 gcc_GAS_CHECK_FEATURE([power8 support],
4206 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4208 [AC_DEFINE(HAVE_AS_POWER8, 1,
4209 [Define if your assembler supports POWER8 instructions.])])
4212 *-*-aix*) conftest_s=' .csect .text[[PR]]
4214 *) conftest_s=' .text
4218 gcc_GAS_CHECK_FEATURE([lwsync support],
4219 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4221 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4222 [Define if your assembler supports LWSYNC instructions.])])
4225 *-*-aix*) conftest_s=' .machine "476"
4228 *) conftest_s=' .machine "476"
4233 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4234 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4236 [AC_DEFINE(HAVE_AS_DCI, 1,
4237 [Define if your assembler supports the DCI/ICI instructions.])])
4239 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4240 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4241 [.gnu_attribute 4,1],,
4242 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4243 [Define if your assembler supports .gnu_attribute.])])
4245 gcc_GAS_CHECK_FEATURE([tls marker support],
4246 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4247 [ bl __tls_get_addr(x@tlsgd)],,
4248 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4249 [Define if your assembler supports arg info for __tls_get_addr.])])
4253 gcc_GAS_CHECK_FEATURE([.ref support],
4254 gcc_cv_as_aix_ref, [2,21,0],,
4255 [ .csect stuff[[rw]]
4261 [AC_DEFINE(HAVE_AS_REF, 1,
4262 [Define if your assembler supports .ref])])
4268 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4269 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4270 [ lw $4,%gp_rel(foo)($4)],,
4271 [if test x$target_cpu_default = x
4272 then target_cpu_default=MASK_EXPLICIT_RELOCS
4273 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4275 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4276 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4277 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4278 [Define if the assembler understands -mno-shared.])])
4280 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4281 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4282 [.gnu_attribute 4,1],,
4283 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4284 [Define if your assembler supports .gnu_attribute.])])
4286 gcc_GAS_CHECK_FEATURE([.micromips support],
4287 gcc_cv_as_micromips_support,,[--fatal-warnings],
4289 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4290 [Define if your assembler supports the .set micromips directive])])
4292 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4293 gcc_cv_as_mips_dtprelword, [2,18,0],,
4294 [.section .tdata,"awT",@progbits
4298 .dtprelword x+0x8000],,
4299 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4300 [Define if your assembler supports .dtprelword.])])
4302 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4303 gcc_cv_as_mips_dspr1_mult,,,
4313 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4314 [Define if your assembler supports DSPR1 mult.])])
4316 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4317 gcc_cv_as_ld_jalr_reloc=no
4318 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4319 if test $in_tree_ld = yes ; then
4320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4321 && test $in_tree_ld_is_elf = yes; then
4322 gcc_cv_as_ld_jalr_reloc=yes
4324 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4325 echo ' .ent x' > conftest.s
4326 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4327 echo ' ld $25,%call16(y)($28)' >> conftest.s
4328 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4329 echo '1: jalr $25' >> conftest.s
4330 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4331 echo '1: jalr $25' >> conftest.s
4332 echo ' .end x' >> conftest.s
4333 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4334 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4335 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4336 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4337 gcc_cv_as_ld_jalr_reloc=yes
4343 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4344 if test x$target_cpu_default = x; then
4345 target_cpu_default=MASK_RELAX_PIC_CALLS
4347 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4350 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4352 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4353 [gcc_cv_ld_mips_personality_relaxation],
4354 [gcc_cv_ld_mips_personality_relaxation=no
4355 if test $in_tree_ld = yes ; then
4356 if test "$gcc_cv_gld_major_version" -eq 2 \
4357 -a "$gcc_cv_gld_minor_version" -ge 21 \
4358 -o "$gcc_cv_gld_major_version" -gt 2; then
4359 gcc_cv_ld_mips_personality_relaxation=yes
4361 elif test x$gcc_cv_as != x \
4362 -a x$gcc_cv_ld != x \
4363 -a x$gcc_cv_readelf != x ; then
4364 cat > conftest.s <<EOF
4366 .cfi_personality 0x80,indirect_ptr
4373 .section .data,"aw",@progbits
4377 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4378 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4379 if $gcc_cv_readelf -d conftest 2>&1 \
4380 | grep TEXTREL > /dev/null 2>&1; then
4382 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4383 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4386 gcc_cv_ld_mips_personality_relaxation=yes
4390 rm -f conftest.s conftest.o conftest])
4391 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4392 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4393 [Define if your linker can relax absolute .eh_frame personality
4394 pointers into PC-relative form.])
4397 gcc_GAS_CHECK_FEATURE([-mnan= support],
4398 gcc_cv_as_mips_nan,,
4400 [AC_DEFINE(HAVE_AS_NAN, 1,
4401 [Define if the assembler understands -mnan=.])])
4402 if test x$gcc_cv_as_mips_nan = xno \
4403 && test x$with_nan != x; then
4405 [Requesting --with-nan= requires assembler support for -mnan=])
4410 # Mips and HP-UX need the GNU assembler.
4411 # Linux on IA64 might be able to use the Intel assembler.
4414 mips*-*-* | *-*-hpux* )
4415 if test x$gas_flag = xyes \
4416 || test x"$host" != x"$build" \
4417 || test ! -x "$gcc_cv_as" \
4418 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4421 echo "*** This configuration requires the GNU assembler" >&2
4427 # ??? Not all targets support dwarf2 debug_line, even within a version
4428 # of gas. Moreover, we need to emit a valid instruction to trigger any
4429 # info to the output file. So, as supported targets are added to gas 2.11,
4430 # add some instruction here to (also) show we expect this might work.
4431 # ??? Once 2.11 is released, probably need to add first known working
4432 # version to the per-target configury.
4434 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4435 | mips | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 \
4446 if test x"$insn" != x; then
4448 .file 1 \"conftest.s\"
4451 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4452 gcc_cv_as_dwarf2_debug_line,
4453 [elf,2,11,0],, [$conftest_s],
4454 [if test x$gcc_cv_objdump != x \
4455 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4456 | grep debug_line > /dev/null 2>&1; then
4457 gcc_cv_as_dwarf2_debug_line=yes
4460 # The .debug_line file table must be in the exact order that
4461 # we specified the files, since these indices are also used
4462 # by DW_AT_decl_file. Approximate this test by testing if
4463 # the assembler bitches if the same index is assigned twice.
4464 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4465 gcc_cv_as_dwarf2_file_buggy,,,
4469 if test $gcc_cv_as_dwarf2_debug_line = yes \
4470 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4471 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4472 [Define if your assembler supports dwarf2 .file/.loc directives,
4473 and preserves file table indices exactly as given.])
4476 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4477 gcc_cv_as_gdwarf2_flag,
4478 [elf,2,11,0], [--gdwarf2], [$insn],,
4479 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4480 [Define if your assembler supports the --gdwarf2 option.])])
4482 gcc_GAS_CHECK_FEATURE([--gstabs option],
4483 gcc_cv_as_gstabs_flag,
4484 [elf,2,11,0], [--gstabs], [$insn],
4485 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4486 # and warns about it, but still exits successfully. So check for
4488 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4490 else gcc_cv_as_gstabs_flag=yes
4492 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4493 [Define if your assembler supports the --gstabs option.])])
4495 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4496 gcc_cv_as_debug_prefix_map_flag,
4497 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4498 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4499 [Define if your assembler supports the --debug-prefix-map option.])])
4502 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4505 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4506 [Define if your assembler supports .lcomm with an alignment field.])])
4508 if test x$with_sysroot = x && test x$host = x$target \
4509 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4510 && test "$prefix" != "NONE"; then
4511 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4512 [Define to PREFIX/include if cpp should also search that directory.])
4515 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4516 if test "x$with_headers" != x; then
4517 target_header_dir=$with_headers
4518 elif test "x$with_sysroot" = x; then
4519 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4520 elif test "x$with_build_sysroot" != "x"; then
4521 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4522 elif test "x$with_sysroot" = xyes; then
4523 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4525 target_header_dir="${with_sysroot}${native_system_header_dir}"
4528 target_header_dir=${native_system_header_dir}
4531 # Determine the version of glibc, if any, used on the target.
4532 AC_MSG_CHECKING([for target glibc version])
4533 AC_ARG_WITH([glibc-version],
4534 [AS_HELP_STRING([--with-glibc-version=M.N],
4535 [assume GCC used with glibc version M.N or later])], [
4536 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4537 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4538 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4540 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4542 glibc_version_major=0
4543 glibc_version_minor=0
4544 [if test -f $target_header_dir/features.h \
4545 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4546 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4547 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4548 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4550 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4552 AC_ARG_ENABLE(gnu-unique-object,
4553 [AS_HELP_STRING([--enable-gnu-unique-object],
4554 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4555 [case $enable_gnu_unique_object in
4557 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4558 Valid choices are 'yes' and 'no'.]) ;;
4560 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4562 [.type foo, '$target_type_format_char'gnu_unique_object],,
4563 # We need to unquote above to to use the definition from config.gcc.
4564 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4565 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4567 if test x$enable_gnu_unique_object = xyes; then
4568 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4569 [Define if your assembler supports @gnu_unique_object.])
4572 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4573 [gcc_cv_as_line_zero],
4574 [gcc_cv_as_line_zero=no
4575 if test $in_tree_gas = yes; then
4576 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4577 elif test "x$gcc_cv_as" != x; then
4578 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4579 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4580 test "x`cat conftest.out`" = x
4582 gcc_cv_as_line_zero=yes
4584 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4585 cat conftest.s >&AS_MESSAGE_LOG_FD
4586 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4587 cat conftest.out >&AS_MESSAGE_LOG_FD
4589 rm -f conftest.o conftest.s conftest.out
4591 if test "x$gcc_cv_as_line_zero" = xyes; then
4592 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4593 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4596 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4597 gcc_cv_ld_eh_frame_hdr=no
4598 if test $in_tree_ld = yes ; then
4599 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4600 && test $in_tree_ld_is_elf = yes; then
4601 gcc_cv_ld_eh_frame_hdr=yes
4603 elif test x$gcc_cv_ld != x; then
4604 if echo "$ld_ver" | grep GNU > /dev/null; then
4605 # Check if linker supports --eh-frame-hdr option
4606 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4607 gcc_cv_ld_eh_frame_hdr=yes
4612 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4613 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4614 gcc_cv_ld_eh_frame_hdr=yes
4620 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4621 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4622 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4623 [Define if your linker supports .eh_frame_hdr.])
4625 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4627 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4628 gcc_cv_ld_eh_frame_ciev3=no
4629 if test $in_tree_ld = yes ; then
4630 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4631 && test $in_tree_ld_is_elf = yes; then
4632 gcc_cv_ld_eh_frame_ciev3=yes
4634 elif test x$gcc_cv_ld != x; then
4635 if echo "$ld_ver" | grep GNU > /dev/null; then
4636 gcc_cv_ld_eh_frame_ciev3=yes
4637 if test 0"$ld_date" -lt 20040513; then
4638 if test -n "$ld_date"; then
4639 # If there was date string, but was earlier than 2004-05-13, fail
4640 gcc_cv_ld_eh_frame_ciev3=no
4641 elif test "$ld_vers_major" -lt 2; then
4642 gcc_cv_ld_eh_frame_ciev3=no
4643 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4644 gcc_cv_ld_eh_frame_ciev3=no
4650 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4651 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4652 gcc_cv_ld_eh_frame_ciev3=yes
4658 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4659 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4660 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4661 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4663 AC_MSG_CHECKING(linker position independent executable support)
4665 if test $in_tree_ld = yes ; then
4666 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4667 && test $in_tree_ld_is_elf = yes; then
4670 elif test x$gcc_cv_ld != x; then
4671 # Check if linker supports -pie option
4672 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4676 if test x"$gcc_cv_ld_pie" = xyes; then
4677 AC_DEFINE(HAVE_LD_PIE, 1,
4678 [Define if your linker supports -pie option.])
4680 AC_MSG_RESULT($gcc_cv_ld_pie)
4682 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4683 gcc_cv_ld_eh_gc_sections=no
4684 if test $in_tree_ld = yes ; then
4685 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4686 && test $in_tree_ld_is_elf = yes; then
4687 gcc_cv_ld_eh_gc_sections=yes
4689 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4690 cat > conftest.s <<EOF
4693 .type _start, @function
4696 .size _start, .-_start
4697 .section .text.foo,"ax",@progbits
4698 .type foo, @function
4702 .section .gcc_except_table.foo,"a",@progbits
4705 .section .eh_frame,"a",@progbits
4708 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4709 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4710 | grep "gc-sections option ignored" > /dev/null; then
4711 gcc_cv_ld_eh_gc_sections=no
4712 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4713 | grep gcc_except_table > /dev/null; then
4714 gcc_cv_ld_eh_gc_sections=yes
4715 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4716 if test x$gcc_cv_as_comdat_group != xyes; then
4717 gcc_cv_ld_eh_gc_sections=no
4718 cat > conftest.s <<EOF
4721 .type _start, @function
4724 .size _start, .-_start
4725 .section .gnu.linkonce.t.foo,"ax",@progbits
4726 .type foo, @function
4730 .section .gcc_except_table.foo,"a",@progbits
4733 .section .eh_frame,"a",@progbits
4736 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4737 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4738 | grep "gc-sections option ignored" > /dev/null; then
4739 gcc_cv_ld_eh_gc_sections=no
4740 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4741 | grep gcc_except_table > /dev/null; then
4742 gcc_cv_ld_eh_gc_sections=yes
4748 rm -f conftest.s conftest.o conftest
4752 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4753 gcc_cv_ld_eh_gc_sections=no
4756 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4757 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4758 [Define if your linker supports garbage collection of
4759 sections in presence of EH frames.])
4761 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4763 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4764 gcc_cv_ld_eh_gc_sections_bug=no
4765 if test $in_tree_ld = yes ; then
4766 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4767 && test $in_tree_ld_is_elf = yes; then
4768 gcc_cv_ld_eh_gc_sections_bug=yes
4770 elif test x$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
4771 gcc_cv_ld_eh_gc_sections_bug=yes
4772 cat > conftest.s <<EOF
4775 .type _start, @function
4778 .size _start, .-_start
4779 .section .text.startup.foo,"ax",@progbits
4780 .type foo, @function
4784 .section .gcc_except_table.foo,"a",@progbits
4787 .section .eh_frame,"a",@progbits
4790 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4791 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4792 | grep "gc-sections option ignored" > /dev/null; then
4794 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4795 | grep gcc_except_table > /dev/null; then
4796 gcc_cv_ld_eh_gc_sections_bug=no
4799 rm -f conftest.s conftest.o conftest
4801 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4802 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4803 [Define if your linker has buggy garbage collection of
4804 sections support when .text.startup.foo like sections are used.])
4806 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4812 AC_CACHE_CHECK(linker --as-needed support,
4813 gcc_cv_ld_as_needed,
4814 [gcc_cv_ld_as_needed=no
4815 gcc_cv_ld_as_needed_option='--as-needed'
4816 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4817 if test $in_tree_ld = yes ; then
4818 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4819 && test $in_tree_ld_is_elf = yes; then
4820 gcc_cv_ld_as_needed=yes
4822 elif test x$gcc_cv_ld != x; then
4823 # Check if linker supports --as-needed and --no-as-needed options
4824 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4825 gcc_cv_ld_as_needed=yes
4828 # Solaris 2 ld always supports -z ignore/-z record.
4830 gcc_cv_ld_as_needed=yes
4831 gcc_cv_ld_as_needed_option="-z ignore"
4832 gcc_cv_ld_no_as_needed_option="-z record"
4837 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4838 # dl_iterate_phdr, i.e. since Solaris 11.
4840 *-*-solaris2.1[[1-9]]*)
4842 i?86-*-* | x86_64-*-*)
4843 if echo "$ld_ver" | grep GNU > /dev/null; then
4844 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4845 gcc_cv_ld_as_needed=no
4851 gcc_cv_ld_as_needed=no
4855 if test x"$gcc_cv_ld_as_needed" = xyes; then
4856 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4857 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4858 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4859 [Define to the linker option to ignore unused dependencies.])
4860 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4861 [Define to the linker option to keep unused dependencies.])
4864 case "$target:$tm_file" in
4865 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4868 emul_name="-melf64lppc"
4871 emul_name="-melf64ppc"
4874 emul_name="-melf64ppc_fbsd"
4877 AC_CACHE_CHECK(linker support for omitting dot symbols,
4878 gcc_cv_ld_no_dot_syms,
4879 [gcc_cv_ld_no_dot_syms=no
4880 if test x"$ld_is_gold" = xyes; then
4881 gcc_cv_ld_no_dot_syms=yes
4882 elif test $in_tree_ld = yes ; then
4883 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4884 gcc_cv_ld_no_dot_syms=yes
4886 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4887 cat > conftest1.s <<EOF
4891 cat > conftest2.s <<EOF
4892 .section ".opd","aw"
4897 .quad .LEfoo,.TOC.@tocbase,0
4903 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4904 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4905 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4906 gcc_cv_ld_no_dot_syms=yes
4908 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4911 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4912 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4913 [Define if your PowerPC64 linker only needs function descriptor syms.])
4916 AC_CACHE_CHECK(linker large toc support,
4917 gcc_cv_ld_large_toc,
4918 [gcc_cv_ld_large_toc=no
4919 if test x"$ld_is_gold" = xyes; then
4920 gcc_cv_ld_large_toc=yes
4921 elif test $in_tree_ld = yes ; then
4922 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4923 gcc_cv_ld_large_toc=yes
4925 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4926 cat > conftest.s <<EOF
4927 .section ".tbss","awT",@nobits
4933 addis 9,13,ie0@got@tprel@ha
4934 ld 9,ie0@got@tprel@l(9)
4936 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4937 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4938 gcc_cv_ld_large_toc=yes
4940 rm -f conftest conftest.o conftest.s
4943 if test x"$gcc_cv_ld_large_toc" = xyes; then
4944 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4945 [Define if your PowerPC64 linker supports a large TOC.])
4952 AC_CACHE_CHECK(linker large toc support,
4953 gcc_cv_ld_large_toc,
4954 [gcc_cv_ld_large_toc=no
4955 if test x$gcc_cv_as != x ; then
4956 cat > conftest.s <<EOF
4966 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4967 gcc_cv_ld_large_toc=yes
4969 rm -f conftest conftest.o conftest.s
4972 if test x"$gcc_cv_ld_large_toc" = xyes; then
4973 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4974 [Define if your PowerPC64 linker supports a large TOC.])
4979 AC_CACHE_CHECK(linker --build-id support,
4981 [gcc_cv_ld_buildid=no
4982 if test $in_tree_ld = yes ; then
4983 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4984 "$gcc_cv_gld_minor_version" -ge 18 -o \
4985 "$gcc_cv_gld_major_version" -gt 2 \
4986 && test $in_tree_ld_is_elf = yes; then
4987 gcc_cv_ld_buildid=yes
4989 elif test x$gcc_cv_ld != x; then
4990 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4991 gcc_cv_ld_buildid=yes
4994 if test x"$gcc_cv_ld_buildid" = xyes; then
4995 AC_DEFINE(HAVE_LD_BUILDID, 1,
4996 [Define if your linker supports --build-id.])
4999 AC_ARG_ENABLE(linker-build-id,
5000 [AS_HELP_STRING([--enable-linker-build-id],
5001 [compiler will always pass --build-id to linker])],
5003 enable_linker_build_id=no)
5005 if test x"$enable_linker_build_id" = xyes; then
5006 if test x"$gcc_cv_ld_buildid" = xyes; then
5007 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5008 [Define if gcc should always pass --build-id to linker.])
5010 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5014 # In binutils 2.21, GNU ld gained support for new emulations fully
5015 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5016 AC_CACHE_CHECK(linker *_sol2 emulation support,
5017 gcc_cv_ld_sol2_emulation,
5018 [gcc_cv_ld_sol2_emulation=no
5019 if test $in_tree_ld = yes ; then
5020 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5021 "$gcc_cv_gld_minor_version" -ge 21 -o \
5022 "$gcc_cv_gld_major_version" -gt 2 \
5023 && test $in_tree_ld_is_elf = yes; then
5024 gcc_cv_ld_sol2_emulation=yes
5026 elif test x$gcc_cv_ld != x; then
5027 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5028 grep _sol2 > /dev/null; then
5029 gcc_cv_ld_sol2_emulation=yes
5032 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5033 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5034 [Define if your linker supports the *_sol2 emulations.])
5037 AC_CACHE_CHECK(linker --sysroot support,
5039 [gcc_cv_ld_sysroot=no
5040 if test $in_tree_ld = yes ; then
5041 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5042 gcc_cv_ld_sysroot=yes
5044 elif test x$gcc_cv_ld != x; then
5045 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5046 gcc_cv_ld_sysroot=yes
5049 if test x"$gcc_cv_ld_sysroot" = xyes; then
5050 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5051 [Define if your linker supports --sysroot.])
5054 # Test for stack protector support in target C library.
5055 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5056 gcc_cv_libc_provides_ssp,
5057 [gcc_cv_libc_provides_ssp=no
5059 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5060 # glibc 2.4 and later provides __stack_chk_fail and
5061 # either __stack_chk_guard, or TLS access to stack guard canary.
5062 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5063 [if test -f $target_header_dir/features.h \
5064 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5065 $target_header_dir/features.h > /dev/null; then
5066 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5067 $target_header_dir/features.h > /dev/null && \
5068 test -f $target_header_dir/bits/uClibc_config.h && \
5069 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5070 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5071 gcc_cv_libc_provides_ssp=yes
5073 # all versions of Bionic support stack protector
5074 elif test -f $target_header_dir/sys/cdefs.h \
5075 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5076 $target_header_dir/sys/cdefs.h > /dev/null; then
5077 gcc_cv_libc_provides_ssp=yes
5081 # Avoid complicated tests (see
5082 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5083 # simply assert that glibc does provide this, which is true for all
5084 # realistically usable GNU/Hurd configurations.
5085 gcc_cv_libc_provides_ssp=yes;;
5086 *-*-darwin* | *-*-freebsd*)
5087 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5088 [echo "no __stack_chk_fail on this target"])
5090 *) gcc_cv_libc_provides_ssp=no ;;
5093 if test x$gcc_cv_libc_provides_ssp = xyes; then
5094 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5095 [Define if your target C library provides stack protector support])
5098 # Test for <sys/sdt.h> on the target.
5099 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5100 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5102 if test -f $target_header_dir/sys/sdt.h; then
5104 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5105 [Define if your target C library provides sys/sdt.h])
5107 AC_MSG_RESULT($have_sys_sdt_h)
5109 # Check if TFmode long double should be used by default or not.
5110 # Some glibc targets used DFmode long double, but with glibc 2.4
5111 # and later they can use TFmode.
5113 powerpc*-*-linux* | \
5117 AC_ARG_WITH(long-double-128,
5118 [AS_HELP_STRING([--with-long-double-128],
5119 [use 128-bit long double by default])],
5120 gcc_cv_target_ldbl128="$with_long_double_128",
5121 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5122 [gcc_cv_target_ldbl128=no
5123 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5124 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5125 && gcc_cv_target_ldbl128=yes
5129 if test x$gcc_cv_target_ldbl128 = xyes; then
5130 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5131 [Define if TFmode long double should be the default])
5134 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5135 gcc_cv_target_dl_iterate_phdr=unknown
5137 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5138 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5139 # libdl there, both complicating its use and breaking compatibility
5140 # between Solaris 10 updates.
5141 *-*-solaris2.1[[1-9]]*)
5142 # <link.h> needs both a dl_iterate_phdr declaration and support for
5143 # compilation with largefile support.
5144 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5145 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5146 gcc_cv_target_dl_iterate_phdr=yes
5148 gcc_cv_target_dl_iterate_phdr=no
5152 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5153 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5154 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5155 [Define if your target C library provides the `dl_iterate_phdr' function.])
5157 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5159 # We no longer support different GC mechanisms. Emit an error if
5160 # the user configures with --with-gc.
5162 [AS_HELP_STRING([--with-gc={page,zone}],
5163 [this option is not supported anymore. It used to choose
5164 the garbage collection mechanism to use with the compiler])],
5165 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5168 # Libraries to use on the host. This will normally be set by the top
5169 # level Makefile. Here we simply capture the value for our Makefile.
5170 if test -z "${HOST_LIBS+set}"; then
5175 # Use the system's zlib library.
5177 zlibinc="-I\$(srcdir)/../zlib"
5178 AC_ARG_WITH(system-zlib,
5179 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5186 dnl Very limited version of automake's enable-maintainer-mode
5188 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5189 dnl maintainer-mode is disabled by default
5190 AC_ARG_ENABLE(maintainer-mode,
5191 [AS_HELP_STRING([--enable-maintainer-mode],
5192 [enable make rules and dependencies not useful
5193 (and sometimes confusing) to the casual installer])],
5194 maintainer_mode=$enableval,
5197 AC_MSG_RESULT($maintainer_mode)
5199 if test "$maintainer_mode" = "yes"; then
5206 dnl Whether to prevent multiple front-ends from linking at the same time
5208 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5209 AC_ARG_ENABLE(link-mutex,
5210 [AS_HELP_STRING([--enable-link-mutex],
5211 [avoid linking multiple front-ends at once to avoid thrashing
5212 on the build machine])],
5213 do_link_mutex=$enableval,
5215 AC_MSG_RESULT($do_link_mutex)
5217 if test "$do_link_mutex" = "yes"; then
5222 AC_SUBST(DO_LINK_MUTEX)
5228 # Make empty files to contain the specs and options for each language.
5229 # Then add #include lines to for a compiler that has specs and/or options.
5235 # These (without "all_") are set in each config-lang.in.
5236 # `language' must be a single word so is spelled singularly.
5239 all_outputs='Makefile'
5240 # List of language makefile fragments.
5242 # Additional files for gengtype
5243 all_gtfiles="$target_gtfiles"
5245 # These are the languages that are set in --enable-languages,
5246 # and are available in the GCC tree.
5247 all_selected_languages=
5249 # Add the language fragments.
5250 # Languages are added via two mechanisms. Some information must be
5251 # recorded in makefile variables, these are defined in config-lang.in.
5252 # We accumulate them and plug them into the main Makefile.
5253 # The other mechanism is a set of hooks for each of the main targets
5254 # like `clean', `install', etc.
5256 language_hooks="Make-hooks"
5258 for lang in ${srcdir}/*/config-lang.in
5261 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5263 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5264 if test "x$lang_alias" = x
5266 echo "$lang doesn't set \$language." 1>&2
5269 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5270 subdirs="$subdirs $subdir"
5272 # $gcc_subdir is where the gcc integration files are to be found
5273 # for a language, both for internal compiler purposes (compiler
5274 # sources implementing front-end to GCC tree converters), and for
5275 # build infrastructure purposes (Make-lang.in, etc.)
5277 # This will be <subdir> (relative to $srcdir) if a line like
5278 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5279 # is found in <langdir>/config-lang.in, and will remain <langdir>
5282 # Except for the language alias (fetched above), the regular
5283 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5284 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5285 # only this and the language alias.
5287 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5288 if [ "$gcc_subdir" = "" ]; then
5289 gcc_subdir="$subdir"
5292 case ",$enable_languages," in
5294 all_selected_languages="$all_selected_languages $lang_alias"
5295 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5296 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5308 . ${srcdir}/$gcc_subdir/config-lang.in
5309 if test "x$language" = x
5311 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5316 case ",$enable_languages," in
5319 for i in $subdir_requires; do
5320 test -f "${srcdir}/$i/config-lang.in" && continue
5328 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5329 if test -f $srcdir/$gcc_subdir/lang.opt; then
5330 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5331 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5333 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5334 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5336 all_languages="$all_languages $language"
5337 all_compilers="$all_compilers $compilers"
5338 all_outputs="$all_outputs $outputs"
5339 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5340 case ",$enable_languages," in
5342 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5344 AC_SUBST(enable_lto)
5351 for language in $all_selected_languages
5353 check_languages="$check_languages check-$language"
5356 # We link each language in with a set of hooks, reached indirectly via
5357 # lang.${target}. Only do so for selected languages.
5361 target_list="all.cross start.encap rest.encap tags \
5362 install-common install-man install-info install-pdf install-html dvi \
5363 pdf html uninstall info man srcextra srcman srcinfo \
5364 mostlyclean clean distclean maintainer-clean install-plugin"
5366 for t in $target_list
5369 for lang in $all_selected_languages
5373 echo "lang.$t: $x" >> Make-hooks
5377 # Option include files
5380 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5381 option_includes="option-includes.mk"
5382 AC_SUBST_FILE(option_includes)
5390 echo "dir ." > .gdbinit
5391 echo "dir ${srcdir}" >> .gdbinit
5392 if test x$gdb_needs_out_file_path = xyes
5394 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5396 if test "x$subdirs" != x; then
5399 echo "dir ${srcdir}/$s" >> .gdbinit
5402 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5403 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5405 # Put a breakpoint on __asan_report_error to help with debugging buffer
5408 *-fsanitize=address*)
5409 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5413 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5414 AC_SUBST(gcc_tooldir)
5417 # Find a directory in which to install a shared libgcc.
5419 AC_ARG_ENABLE(version-specific-runtime-libs,
5420 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5421 [specify that runtime libraries should be
5422 installed in a compiler-specific directory])])
5424 # Substitute configuration variables
5427 AC_SUBST(all_compilers)
5428 AC_SUBST(all_gtfiles)
5429 AC_SUBST(all_lang_makefrags)
5430 AC_SUBST(all_languages)
5431 AC_SUBST(all_selected_languages)
5432 AC_SUBST(build_exeext)
5433 AC_SUBST(build_install_headers_dir)
5434 AC_SUBST(build_xm_file_list)
5435 AC_SUBST(build_xm_include_list)
5436 AC_SUBST(build_xm_defines)
5437 AC_SUBST(build_file_translate)
5438 AC_SUBST(check_languages)
5439 AC_SUBST(cpp_install_dir)
5440 AC_SUBST(xmake_file)
5441 AC_SUBST(tmake_file)
5442 AC_SUBST(TM_ENDIAN_CONFIG)
5443 AC_SUBST(TM_MULTILIB_CONFIG)
5444 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5445 AC_SUBST(extra_gcc_objs)
5446 AC_SUBST(user_headers_inc_next_pre)
5447 AC_SUBST(user_headers_inc_next_post)
5448 AC_SUBST(extra_headers_list)
5449 AC_SUBST(extra_objs)
5450 AC_SUBST(extra_programs)
5451 AC_SUBST(float_h_file)
5452 AC_SUBST(gcc_config_arguments)
5453 AC_SUBST(gcc_gxx_include_dir)
5454 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5455 AC_SUBST(host_exeext)
5456 AC_SUBST(host_xm_file_list)
5457 AC_SUBST(host_xm_include_list)
5458 AC_SUBST(host_xm_defines)
5459 AC_SUBST(out_host_hook_obj)
5461 AC_SUBST(lang_opt_files)
5462 AC_SUBST(lang_specs_files)
5463 AC_SUBST(lang_tree_files)
5464 AC_SUBST(local_prefix)
5466 AC_SUBST(objc_boehm_gc)
5468 AC_SUBST(out_object_file)
5469 AC_SUBST(common_out_file)
5470 AC_SUBST(common_out_object_file)
5471 AC_SUBST(tm_file_list)
5472 AC_SUBST(tm_include_list)
5473 AC_SUBST(tm_defines)
5474 AC_SUBST(tm_p_file_list)
5475 AC_SUBST(tm_p_include_list)
5476 AC_SUBST(xm_file_list)
5477 AC_SUBST(xm_include_list)
5478 AC_SUBST(xm_defines)
5479 AC_SUBST(use_gcc_stdint)
5480 AC_SUBST(c_target_objs)
5481 AC_SUBST(cxx_target_objs)
5482 AC_SUBST(fortran_target_objs)
5483 AC_SUBST(target_cpu_default)
5485 AC_SUBST_FILE(language_hooks)
5488 if test x${build} = x${host} ; then
5489 if test x${host} = x${target} ; then
5490 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5492 echo "Links are now set up to build a cross-compiler" 1>&2
5493 echo " from ${host} to ${target}." 1>&2
5496 if test x${host} = x${target} ; then
5497 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5498 echo " for ${target}." 1>&2
5500 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5501 echo " from ${host} to ${target}." 1>&2
5505 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5506 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5508 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5509 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5511 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5512 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5513 if test "x${CLOOGLIBS}" != "x" ; then
5514 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5517 # Check for plugin support
5518 AC_ARG_ENABLE(plugin,
5519 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5520 enable_plugin=$enableval,
5521 enable_plugin=yes; default_plugin=yes)
5527 if test x$build = x$host; then
5528 export_sym_check="nm${exeext} -g"
5529 elif test x$host = x$target; then
5530 export_sym_check="$gcc_cv_nm -g"
5536 if test x$build = x$host; then
5537 export_sym_check="objdump${exeext} -T"
5538 elif test x$host = x$target; then
5539 export_sym_check="$gcc_cv_objdump -T"
5546 if test x"$enable_plugin" = x"yes"; then
5548 AC_MSG_CHECKING([for exported symbols])
5549 if test "x$export_sym_check" != x; then
5550 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5551 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5552 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5553 : # No need to use a flag
5554 AC_MSG_RESULT([yes])
5556 AC_MSG_RESULT([yes])
5557 AC_MSG_CHECKING([for -rdynamic])
5558 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5559 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5561 pluginlibs="-rdynamic"
5566 AC_MSG_RESULT([$plugin_rdynamic])
5569 AC_MSG_RESULT([unable to check])
5574 AC_SEARCH_LIBS([dlopen], [dl])
5575 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5576 pluginlibs="$pluginlibs -ldl"
5580 # Check that we can build shared objects with -fPIC -shared
5581 saved_LDFLAGS="$LDFLAGS"
5582 saved_CFLAGS="$CFLAGS"
5585 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5586 CFLAGS="$CFLAGS -fPIC"
5587 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5590 CFLAGS="$CFLAGS -fPIC"
5591 LDFLAGS="$LDFLAGS -fPIC -shared"
5594 AC_MSG_CHECKING([for -fPIC -shared])
5596 [extern int X;],[return X == 0;],
5597 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5598 [AC_MSG_RESULT([no]); have_pic_shared=no])
5599 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5603 LDFLAGS="$saved_LDFLAGS"
5604 CFLAGS="$saved_CFLAGS"
5606 # If plugin support had been requested but not available, fail.
5607 if test x"$enable_plugin" = x"no" ; then
5608 if test x"$default_plugin" != x"yes"; then
5610 Building GCC with plugin support requires a host that supports
5611 -fPIC, -shared, -ldl and -rdynamic.])
5616 AC_SUBST(pluginlibs)
5617 AC_SUBST(enable_plugin)
5618 if test x"$enable_plugin" = x"yes"; then
5619 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5623 # Enable --enable-host-shared
5624 AC_ARG_ENABLE(host-shared,
5625 [AS_HELP_STRING([--enable-host-shared],
5626 [build host code as shared libraries])],
5627 [PICFLAG=-fPIC], [PICFLAG=])
5628 AC_SUBST(enable_host_shared)
5632 AC_ARG_ENABLE(libquadmath-support,
5633 [AS_HELP_STRING([--disable-libquadmath-support],
5634 [disable libquadmath support for Fortran])],
5635 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5636 ENABLE_LIBQUADMATH_SUPPORT=yes)
5637 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5638 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5639 [Define to 1 to enable libquadmath support])
5643 # Specify what hash style to use by default.
5644 AC_ARG_WITH([linker-hash-style],
5645 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5646 [specify the linker hash style])],
5647 [case x"$withval" in
5649 LINKER_HASH_STYLE=sysv
5652 LINKER_HASH_STYLE=gnu
5655 LINKER_HASH_STYLE=both
5658 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5661 [LINKER_HASH_STYLE=''])
5662 if test x"${LINKER_HASH_STYLE}" != x; then
5663 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5664 [The linker hash style])
5667 # Configure the subdirectories
5668 # AC_CONFIG_SUBDIRS($subdirs)
5670 # Create the Makefile
5671 # and configure language subdirectories
5672 AC_CONFIG_FILES($all_outputs)
5674 AC_CONFIG_COMMANDS([default],
5676 case ${CONFIG_HEADERS} in
5677 *auto-host.h:config.in*)
5680 # Make sure all the subdirs exist.
5681 for d in $subdirs doc build common c-family
5683 test -d $d || mkdir $d
5686 [subdirs='$subdirs'])