2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2014 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$enable_objc_gc = xno; then
718 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
719 dwarf2="$with_dwarf2",
722 AC_ARG_ENABLE(shared,
723 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
725 case $enable_shared in
729 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
730 for pkg in $enableval; do
731 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
738 ], [enable_shared=yes])
739 AC_SUBST(enable_shared)
741 AC_ARG_WITH([native-system-header-dir],
742 [ --with-native-system-header-dir=dir
743 use dir as the directory to look for standard
744 system header files in. Defaults to /usr/include.],
746 case ${with_native_system_header_dir} in
747 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
748 /* | [[A-Za-z]]:[[\\/]]*) ;;
749 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
751 configured_native_system_header_dir="${withval}"
752 ], [configured_native_system_header_dir=])
754 AC_ARG_WITH(build-sysroot,
755 [AS_HELP_STRING([--with-build-sysroot=sysroot],
756 [use sysroot as the system root during the build])],
757 [if test x"$withval" != x ; then
758 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
760 [SYSROOT_CFLAGS_FOR_TARGET=])
761 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
763 if test "x$prefix" = xNONE; then
764 test_prefix=/usr/local
768 if test "x$exec_prefix" = xNONE; then
769 test_exec_prefix=$test_prefix
771 test_exec_prefix=$exec_prefix
775 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
776 [search for usr/lib, usr/include, et al, within DIR])],
778 case ${with_sysroot} in
779 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
780 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
783 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
784 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
786 case ${TARGET_SYSTEM_ROOT} in
787 "${test_prefix}"|"${test_prefix}/"*|\
788 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
789 '${prefix}'|'${prefix}/'*|\
790 '${exec_prefix}'|'${exec_prefix}/'*)
791 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
792 TARGET_SYSTEM_ROOT_DEFINE="$t"
797 TARGET_SYSTEM_ROOT_DEFINE=
798 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
800 AC_SUBST(TARGET_SYSTEM_ROOT)
801 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
802 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
805 [AS_HELP_STRING([--with-specs=SPECS],
806 [add SPECS to driver command-line processing])],
807 [CONFIGURE_SPECS=$withval],
810 AC_SUBST(CONFIGURE_SPECS)
812 ACX_PKGVERSION([GCC])
813 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
815 # Sanity check enable_languages in case someone does not run the toplevel
816 # configure # script.
817 AC_ARG_ENABLE(languages,
818 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
819 [case ,${enable_languages}, in
821 # go safe -- we cannot be much sure without the toplevel
823 # analysis of which target libs are present and usable
827 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
832 enable_languages=c,${enable_languages}
835 [enable_languages=c])
837 AC_ARG_WITH(multilib-list,
838 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
840 with_multilib_list=default)
842 # -------------------------
843 # Checks for other programs
844 # -------------------------
848 # Find some useful tools
850 # We need awk to create options.c and options.h.
851 # Bail out if it's missing.
853 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
860 AC_SUBST(ranlib_flags)
864 # See if cmp has --ignore-initial.
865 gcc_AC_PROG_CMP_IGNORE_INITIAL
867 # See if we have the mktemp command.
868 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
870 # See if makeinfo has been installed and is modern enough
871 # that we can use it.
872 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
873 [GNU texinfo.* \([0-9][0-9.]*\)],
874 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
875 if test $gcc_cv_prog_makeinfo_modern = no; then
877 *** Makeinfo is missing or too old.
878 *** Info documentation will not be built.])
885 # Is pod2man recent enough to regenerate manpages?
886 AC_MSG_CHECKING([for recent Pod::Man])
887 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
889 GENERATED_MANPAGES=generated-manpages
894 AC_SUBST(GENERATED_MANPAGES)
896 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
899 dnl Don't use AC_PROG_LEX; we insist on flex.
900 dnl LEXLIB is not useful in gcc.
901 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
904 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
906 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
907 # check for build == host before using them.
910 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
911 && test -d ../binutils ; then
912 NM='${objdir}/../binutils/nm-new'
914 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
918 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
919 && test -d ../binutils ; then
920 AR='${objdir}/../binutils/ar'
922 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
926 # --------------------
927 # Checks for C headers
928 # --------------------
930 # Need to reject headers which give warnings, so that the -Werror bootstrap
931 # works later. *sigh* This needs to come before all header checks.
939 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
940 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
941 sys/resource.h sys/param.h sys/times.h sys/stat.h \
942 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
944 # Check for thread headers.
945 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
946 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
948 # These tests can't be done till we know if we have limits.h.
952 # ----------------------
953 # Checks for C++ headers
954 # ----------------------
956 dnl Autoconf will give an error in the configure script if there is no
957 dnl C++ preprocessor. Hack to prevent that.
958 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
960 m4_popdef([AC_MSG_ERROR])[]dnl
964 AC_CHECK_HEADERS(unordered_map)
965 AC_CHECK_HEADERS(tr1/unordered_map)
966 AC_CHECK_HEADERS(ext/hash_map)
971 # Dependency checking.
976 AC_CONFIG_COMMANDS([gccdepdir],[
977 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
978 for lang in $subdirs c-family common
980 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
981 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
983 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
991 # These libraries may be used by collect2.
992 # We may need a special search path to get them linked.
993 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
995 for libs in '' -lld -lmld \
996 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
997 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1000 AC_TRY_LINK_FUNC(ldopen,
1001 [gcc_cv_collect2_libs="$libs"; break])
1004 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1005 case $gcc_cv_collect2_libs in
1007 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1009 AC_SUBST(COLLECT2_LIBS)
1011 # When building Ada code on Alpha, we need exc_resume which is usually in
1012 # -lexc. So test for it.
1015 AC_SEARCH_LIBS(exc_resume, exc)
1018 AC_SUBST(GNAT_LIBEXC)
1020 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1023 AC_SEARCH_LIBS(kstat_open, kstat)
1024 EXTRA_GCC_LIBS="$LIBS"
1026 AC_SUBST(EXTRA_GCC_LIBS)
1028 # Some systems put ldexp and frexp in libm instead of libc; assume
1029 # they're both in the same place. jcf-dump needs them.
1032 AC_SEARCH_LIBS(ldexp, m)
1037 # Use <inttypes.h> only if it exists,
1038 # doesn't clash with <sys/types.h>, and declares intmax_t.
1039 AC_MSG_CHECKING(for inttypes.h)
1040 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1041 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1042 [[#include <sys/types.h>
1043 #include <inttypes.h>]],
1044 [[intmax_t i = -1;]])],
1045 [gcc_cv_header_inttypes_h=yes],
1046 [gcc_cv_header_inttypes_h=no])])
1047 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1048 if test $gcc_cv_header_inttypes_h = yes; then
1049 AC_DEFINE(HAVE_INTTYPES_H, 1,
1050 [Define if you have a working <inttypes.h> header file.])
1053 dnl Disabled until we have a complete test for buggy enum bitfields.
1054 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1056 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1057 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1058 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1059 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1060 putchar_unlocked putc_unlocked)
1061 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1062 sysconf strsignal getrusage nl_langinfo \
1063 gettimeofday mbstowcs wcswidth mmap setlocale \
1064 gcc_UNLOCKED_FUNCS madvise)
1066 if test x$ac_cv_func_mbstowcs = xyes; then
1067 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1068 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1074 [gcc_cv_func_mbstowcs_works=yes],
1075 [gcc_cv_func_mbstowcs_works=no],
1076 [gcc_cv_func_mbstowcs_works=yes])])
1077 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1078 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1079 [Define this macro if mbstowcs does not crash when its
1080 first argument is NULL.])
1084 AC_CHECK_TYPE(ssize_t, int)
1085 AC_CHECK_TYPE(caddr_t, char *)
1087 GCC_AC_FUNC_MMAP_BLACKLIST
1091 # Under VMS, vfork works very differently than on Unix. The standard test
1092 # won't work, and it isn't easily adaptable. It makes more sense to
1094 ac_cv_func_vfork_works=yes
1099 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1100 # iconv() prototype.
1105 # Until we have in-tree GNU iconv:
1107 AC_SUBST(LIBICONV_DEP)
1113 # We will need to find libiberty.h and ansidecl.h
1114 saved_CFLAGS="$CFLAGS"
1115 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1116 saved_CXXFLAGS="$CXXFLAGS"
1117 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1118 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1119 strsignal strstr stpcpy strverscmp \
1120 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1121 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1122 #include "ansidecl.h"
1123 #include "system.h"])
1125 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1126 #include "ansidecl.h"
1128 #ifdef HAVE_SYS_RESOURCE_H
1129 #include <sys/resource.h>
1133 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1134 #include "ansidecl.h"
1136 #ifdef HAVE_SYS_RESOURCE_H
1137 #include <sys/resource.h>
1139 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1140 [Define to `long' if <sys/resource.h> doesn't define.])])
1142 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1143 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1144 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1145 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1146 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1147 #include "ansidecl.h"
1156 gcc_AC_CHECK_DECLS(times, , ,[
1157 #include "ansidecl.h"
1159 #ifdef HAVE_SYS_TIMES_H
1160 #include <sys/times.h>
1164 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1165 #include "ansidecl.h"
1170 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1173 gcc_AC_CHECK_DECLS(madvise, , ,[
1174 #include "ansidecl.h"
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190 [Define if <sys/times.h> defines struct tms.])
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201 AC_DEFINE(HAVE_CLOCK_T, 1,
1202 [Define if <time.h> defines clock_t.])
1205 # Check if F_SETLKW is supported by fcntl.
1206 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1207 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1208 #include <fcntl.h>]], [[
1214 return fcntl (1, F_SETLKW, &fl);]])],
1215 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1216 if test $ac_cv_f_setlkw = yes; then
1217 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1218 [Define if F_SETLKW supported by fcntl.])
1221 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1222 CFLAGS="$saved_CFLAGS"
1223 CXXFLAGS="$saved_CXXFLAGS"
1225 # mkdir takes a single argument on some systems.
1226 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1234 # With Setjmp/Longjmp based exception handling.
1235 AC_ARG_ENABLE(sjlj-exceptions,
1236 [AS_HELP_STRING([--enable-sjlj-exceptions],
1237 [arrange to use setjmp/longjmp exception handling])],
1240 if test $enableval != yes; then
1241 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1246 force_sjlj_exceptions=yes],
1249 force_sjlj_exceptions=yes
1253 force_sjlj_exceptions=no
1256 if test $force_sjlj_exceptions = yes; then
1257 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1258 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1259 [Define 0/1 to force the choice for exception handling model.])
1262 # --------------------------------------------------------
1263 # Build, host, and target specific configuration fragments
1264 # --------------------------------------------------------
1266 # Collect build-machine-specific information.
1267 . ${srcdir}/config.build
1269 # Collect host-machine-specific information.
1270 . ${srcdir}/config.host
1274 # Collect target-machine-specific information.
1275 . ${srcdir}/config.gcc
1277 extra_objs="${host_extra_objs} ${extra_objs}"
1278 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1280 # Default the target-machine variables that were not explicitly set.
1281 if test x"$tm_file" = x
1282 then tm_file=$cpu_type/$cpu_type.h; fi
1284 if test x"$extra_headers" = x
1285 then extra_headers=; fi
1287 if test x$md_file = x
1288 then md_file=$cpu_type/$cpu_type.md; fi
1290 if test x$out_file = x
1291 then out_file=$cpu_type/$cpu_type.c; fi
1293 if test x"$tmake_file" = x
1294 then tmake_file=$cpu_type/t-$cpu_type
1297 # Support --enable-initfini-array.
1298 if test x$enable_initfini_array != xno; then
1299 tm_file="${tm_file} initfini-array.h"
1302 if test x"$dwarf2" = xyes
1303 then tm_file="$tm_file tm-dwarf2.h"
1306 # Say what files are being used for the output code and MD file.
1307 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1308 echo "Using \`$srcdir/config/$md_file' as machine description file."
1310 # If any of the xm_file variables contain nonexistent files, warn
1311 # about them and drop them.
1314 for x in $build_xm_file; do
1315 if test -f $srcdir/config/$x
1317 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1323 for x in $host_xm_file; do
1324 if test -f $srcdir/config/$x
1326 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1332 for x in $xm_file; do
1333 if test -f $srcdir/config/$x
1335 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1341 for f in $tm_file; do
1344 if test $count = ax; then
1345 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1347 echo "Using the following target machine macro files:"
1348 for f in $tm_file; do
1349 echo " $srcdir/config/$f"
1353 if test x$need_64bit_hwint = xyes; then
1354 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1355 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1358 if test x$use_long_long_for_widest_fast_int = xyes; then
1359 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1360 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1361 efficiently supported by the host hardware.])
1364 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1365 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1367 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1368 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1371 for f in $host_xm_file; do
1374 if test $count = a; then
1376 elif test $count = ax; then
1377 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1379 echo "Using the following host machine macro files:"
1380 for f in $host_xm_file; do
1381 echo " $srcdir/config/$f"
1384 echo "Using ${out_host_hook_obj} for host machine hooks."
1386 if test "$host_xm_file" != "$build_xm_file"; then
1388 for f in $build_xm_file; do
1391 if test $count = a; then
1393 elif test $count = ax; then
1394 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1396 echo "Using the following build machine macro files:"
1397 for f in $build_xm_file; do
1398 echo " $srcdir/config/$f"
1403 if test -n "$configured_native_system_header_dir"; then
1404 native_system_header_dir=$configured_native_system_header_dir
1406 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1407 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1411 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1412 gcc_cv_mcontext_underscores,
1414 #include <sys/cdefs.h>
1415 #include <sys/signal.h>
1416 #include <ucontext.h>
1417 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1419 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1420 if test $gcc_cv_mcontext_underscores = yes; then
1421 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1422 [mcontext_t fields start with __])
1431 # Check if a valid thread package
1432 case ${enable_threads} in
1435 target_thread_file='single'
1439 target_thread_file='single'
1441 aix | dce | lynx | mipssde | posix | rtems | \
1442 single | tpf | vxworks | win32)
1443 target_thread_file=${enable_threads}
1446 echo "${enable_threads} is an unknown thread package" 1>&2
1451 if test x${thread_file} = x; then
1452 # No thread file set by target-specific clauses in config.gcc,
1453 # so use file chosen by default logic above
1454 thread_file=${target_thread_file}
1462 if test x$enable___cxa_atexit = xyes || \
1463 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1464 if test x$host = x$target; then
1466 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1467 # keyed to flag_use_cxa_atexit
1475 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1476 [echo "__cxa_atexit can't be enabled on this target"])
1480 # We can't check for __cxa_atexit when building a cross, so assume
1484 if test x$use_cxa_atexit = xyes; then
1485 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1486 [Define if you want to use __cxa_atexit, rather than atexit, to
1487 register C++ destructors for local statics and global objects.
1488 This is essential for fully standards-compliant handling of
1489 destructors, but requires __cxa_atexit in libc.])
1493 # Look for a file containing extra machine modes.
1494 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1495 extra_modes_file='$(srcdir)'/config/${extra_modes}
1496 AC_SUBST(extra_modes_file)
1497 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1498 [Define to the name of a file containing a list of extra machine modes
1499 for this architecture.])
1502 # Convert extra_options into a form suitable for Makefile use.
1505 for f in $extra_options; do
1506 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1507 all_opt_files="$all_opt_files $srcdir/config/$f"
1509 AC_SUBST(extra_opt_files)
1511 # auto-host.h is the file containing items generated by autoconf and is
1512 # the first file included by config.h.
1513 # If host=build, it is correct to have bconfig include auto-host.h
1514 # as well. If host!=build, we are in error and need to do more
1515 # work to find out the build config parameters.
1516 if test x$host = x$build
1518 build_auto=auto-host.h
1520 # We create a subdir, then run autoconf in the subdir.
1521 # To prevent recursion we set host and build for the new
1522 # invocation of configure to the build for this invocation
1529 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1530 *) realsrcdir=../${srcdir};;
1532 # Clearing GMPINC is necessary to prevent host headers being
1533 # used by the build compiler. Defining GENERATOR_FILE stops
1534 # system.h from including gmp.h.
1535 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1536 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1537 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1538 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1539 ${realsrcdir}/configure \
1540 --enable-languages=${enable_languages-all} \
1541 --target=$target_alias --host=$build_alias --build=$build_alias
1543 # We just finished tests for the build machine, so rename
1544 # the file auto-build.h in the gcc directory.
1545 mv auto-host.h ../auto-build.h
1548 build_auto=auto-build.h
1550 AC_SUBST(build_subdir)
1552 tm_file="${tm_file} defaults.h"
1553 tm_p_file="${tm_p_file} tm-preds.h"
1554 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1555 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1556 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1557 # put this back in temporarily.
1558 xm_file="auto-host.h ansidecl.h ${xm_file}"
1565 # Compile in configure arguments.
1566 if test -f configargs.h ; then
1567 # Being re-configured.
1568 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1569 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1571 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1574 # Double all backslashes and backslash all quotes to turn
1575 # gcc_config_arguments into a C string.
1576 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1577 $gcc_config_arguments
1579 gcc_config_arguments_str=`cat conftest.out`
1582 cat > configargs.h <<EOF
1583 /* Generated automatically. */
1584 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1585 static const char thread_model[] = "$thread_file";
1587 static const struct {
1588 const char *name, *value;
1589 } configure_default_options[] = $configure_default_options;
1594 gcc_BASEVER=`cat $srcdir/BASE-VER`
1595 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1596 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1597 if test -f $srcdir/REVISION ; then
1598 gcc_REVISION=`cat $srcdir/REVISION`
1602 cat > plugin-version.h <<EOF
1603 #include "configargs.h"
1605 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1606 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1607 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1608 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1610 static char basever[] = "$gcc_BASEVER";
1611 static char datestamp[] = "$gcc_DATESTAMP";
1612 static char devphase[] = "$gcc_DEVPHASE";
1613 static char revision[] = "$gcc_REVISION";
1615 /* FIXME plugins: We should make the version information more precise.
1616 One way to do is to add a checksum. */
1618 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1620 configuration_arguments};
1624 # Internationalization
1625 ZW_GNU_GETTEXT_SISTER_DIR
1627 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1628 # -liconv on the link line twice.
1629 case "$LIBINTL" in *$LIBICONV*)
1633 AC_ARG_ENABLE(secureplt,
1634 [AS_HELP_STRING([--enable-secureplt],
1635 [enable -msecure-plt by default for PowerPC])],
1638 AC_ARG_ENABLE(leading-mingw64-underscores,
1639 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1640 [enable leading underscores on 64 bit mingw targets]),
1642 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1643 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1644 [Define if we should use leading underscore on 64 bit mingw targets])])
1647 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1650 AC_ARG_ENABLE(frame-pointer,
1651 [AS_HELP_STRING([--enable-frame-pointer],
1652 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1655 linux* | darwin[[8912]]*)
1656 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1658 enable_frame_pointer=no
1661 enable_frame_pointer=yes
1666 # Windows32 Registry support for specifying GCC installation paths.
1667 AC_ARG_ENABLE(win32-registry,
1668 [AS_HELP_STRING([--disable-win32-registry],
1669 [disable lookup of installation paths in the
1670 Registry on Windows hosts])
1671 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1672 AS_HELP_STRING([--enable-win32-registry=KEY],
1673 [use KEY instead of GCC version as the last portion
1674 of the registry key])],,)
1677 win32 | pe | cygwin* | mingw32* | uwin*)
1678 if test "x$enable_win32_registry" != xno; then
1679 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1682 if test "x$enable_win32_registry" != xno; then
1683 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1684 [Define to 1 if installation paths should be looked up in the Windows
1685 Registry. Ignored on non-Windows hosts.])
1687 if test "x$enable_win32_registry" != xyes \
1688 && test "x$enable_win32_registry" != x; then
1689 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1690 [Define to be the last component of the Windows registry key under which
1691 to look for installation paths. The full key used will be
1692 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1693 The default is the GCC version number.])
1699 # Get an absolute path to the GCC top-level source directory
1700 holddir=`${PWDCMD-pwd}`
1702 topdir=`${PWDCMD-pwd}`
1705 # Conditionalize the makefile for this host machine.
1707 for f in ${host_xmake_file}
1709 if test -f ${srcdir}/config/$f
1711 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1715 # Conditionalize the makefile for this target machine.
1717 for f in ${tmake_file}
1719 if test -f ${srcdir}/config/$f
1721 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1724 tmake_file="${tmake_file_}"
1726 out_object_file=`basename $out_file .c`.o
1727 common_out_object_file=`basename $common_out_file .c`.o
1729 tm_file_list="options.h"
1730 tm_include_list="options.h insn-constants.h"
1731 for f in $tm_file; do
1734 f=`echo $f | sed 's/^..//'`
1735 tm_file_list="${tm_file_list} $f"
1736 tm_include_list="${tm_include_list} $f"
1739 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1740 tm_include_list="${tm_include_list} $f"
1743 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1744 tm_include_list="${tm_include_list} config/$f"
1751 for f in $tm_p_file; do
1754 tm_p_file_list="${tm_p_file_list} $f"
1755 tm_p_include_list="${tm_p_include_list} $f"
1758 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1759 tm_p_include_list="${tm_p_include_list} config/$f"
1765 for f in $xm_file; do
1768 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1769 xm_include_list="${xm_include_list} $f"
1772 xm_file_list="${xm_file_list} $f"
1773 xm_include_list="${xm_include_list} $f"
1776 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1777 xm_include_list="${xm_include_list} config/$f"
1783 host_xm_include_list=
1784 for f in $host_xm_file; do
1787 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1788 host_xm_include_list="${host_xm_include_list} $f"
1791 host_xm_file_list="${host_xm_file_list} $f"
1792 host_xm_include_list="${host_xm_include_list} $f"
1795 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1796 host_xm_include_list="${host_xm_include_list} config/$f"
1802 for f in $build_xm_file; do
1805 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1806 build_xm_include_list="${build_xm_include_list} $f"
1808 auto-build.h | auto-host.h )
1809 build_xm_file_list="${build_xm_file_list} $f"
1810 build_xm_include_list="${build_xm_include_list} $f"
1813 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1814 build_xm_include_list="${build_xm_include_list} config/$f"
1819 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1820 # cross-compiler which does not use the native headers and libraries.
1821 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1822 CROSS= AC_SUBST(CROSS)
1823 ALL=all.internal AC_SUBST(ALL)
1824 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1826 if test "x$with_build_sysroot" != x; then
1827 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1829 # This value is used, even on a native system, because
1830 # CROSS_SYSTEM_HEADER_DIR is just
1831 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1832 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1835 if test x$host != x$target
1837 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1839 SYSTEM_HEADER_DIR=$build_system_header_dir
1840 case "$host","$target" in
1841 # Darwin crosses can use the host system's libraries and headers,
1842 # because of the fat library support. Of course, it must be the
1843 # same version of Darwin on both sides. Allow the user to
1844 # just say --target=foo-darwin without a version number to mean
1845 # "the version on this system".
1846 *-*-darwin*,*-*-darwin*)
1847 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1848 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1849 if test $hostos = $targetos -o $targetos = darwin ; then
1851 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1856 i?86-*-*,x86_64-*-* \
1857 | powerpc*-*-*,powerpc64*-*-*)
1858 CROSS="$CROSS -DNATIVE_CROSS" ;;
1863 if test "x$with_headers" = x; then
1870 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1871 SYSTEM_HEADER_DIR=$build_system_header_dir
1874 # If this is a cross-compiler that does not
1875 # have its own set of headers then define
1878 # If this is using newlib, without having the headers available now,
1879 # then define inhibit_libc in LIBGCC2_CFLAGS.
1880 # This prevents libgcc2 from containing any code which requires libc
1882 : ${inhibit_libc=false}
1883 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1884 test x$with_newlib = xyes ; } &&
1885 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1888 AC_SUBST(inhibit_libc)
1890 # When building gcc with a cross-compiler, we need to adjust things so
1891 # that the generator programs are still built with the native compiler.
1892 # Also, we cannot run fixincludes.
1894 # These are the normal (build=host) settings:
1895 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1896 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1897 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1898 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1899 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1900 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1902 # And these apply if build != host, or we are generating coverage data
1903 if test x$build != x$host || test "x$coverage_flags" != x
1905 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1906 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
1907 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1910 # Expand extra_headers to include complete path.
1911 # This substitutes for lots of t-* files.
1913 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1914 for file in ${extra_headers} ; do
1915 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1918 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1919 if test x"$use_gcc_tgmath" = xyes
1920 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1923 # Define collect2 in Makefile.
1924 case $host_can_use_collect2 in
1926 *) collect2='collect2$(exeext)' ;;
1928 AC_SUBST([collect2])
1930 # Add a definition of USE_COLLECT2 if system wants one.
1931 case $use_collect2 in
1932 no) use_collect2= ;;
1935 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1936 xm_defines="${xm_defines} USE_COLLECT2"
1937 case $host_can_use_collect2 in
1939 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1945 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1946 [Define to the name of the LTO plugin DSO that must be
1947 passed to the linker's -plugin=LIB option.])
1949 # ---------------------------
1950 # Assembler & linker features
1951 # ---------------------------
1953 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1954 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1955 # However when ld-new is first executed from the build tree, libtool will
1956 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1957 # to the build tree. While doing this we need to use the previous-stage
1958 # linker, or we have an infinite loop. The presence of a shell script as
1959 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1960 # the gcc/collect-ld script. So we need to know how libtool works, or
1961 # exec-tool will fail.
1963 m4_defun([_LT_CONFIG_COMMANDS], [])
1966 AC_SUBST(enable_fast_install)
1968 # Identify the assembler which will work hand-in-glove with the newly
1969 # built GCC, so that we can examine its features. This is the assembler
1970 # which will be driven by the driver program.
1972 # If build != host, and we aren't building gas in-tree, we identify a
1973 # build->target assembler and hope that it will have the same features
1974 # as the host->target assembler we'll be using.
1975 gcc_cv_gas_major_version=
1976 gcc_cv_gas_minor_version=
1977 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1979 m4_pattern_allow([AS_FOR_TARGET])dnl
1980 AS_VAR_SET_IF(gcc_cv_as,, [
1981 if test -x "$DEFAULT_ASSEMBLER"; then
1982 gcc_cv_as="$DEFAULT_ASSEMBLER"
1983 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1984 && test -f ../gas/Makefile \
1985 && test x$build = x$host; then
1986 gcc_cv_as=../gas/as-new$build_exeext
1987 elif test -x as$build_exeext; then
1988 # Build using assembler in the current directory.
1989 gcc_cv_as=./as$build_exeext
1990 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1991 gcc_cv_as="$AS_FOR_TARGET"
1993 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1996 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1997 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1998 case "$ORIGINAL_AS_FOR_TARGET" in
1999 ./as | ./as$build_exeext) ;;
2000 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2003 AC_MSG_CHECKING(what assembler to use)
2004 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2005 # Single tree build which includes gas. We want to prefer it
2006 # over whatever linker top-level may have detected, since
2007 # we'll use what we're building after installation anyway.
2008 AC_MSG_RESULT(newly built gas)
2010 _gcc_COMPUTE_GAS_VERSION
2011 in_tree_gas_is_elf=no
2012 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2013 || (grep 'obj_format = multi' ../gas/Makefile \
2014 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2016 in_tree_gas_is_elf=yes
2019 AC_MSG_RESULT($gcc_cv_as)
2025 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2026 [case "${enableval}" in
2033 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2034 [case "${enableval}" in
2036 install_gold_as_default=yes
2039 if test x${default_ld} != x; then
2040 install_gold_as_default=yes
2046 AC_MSG_ERROR([invalid --enable-gold argument])
2049 [install_gold_as_default=no])
2051 # Identify the linker which will work hand-in-glove with the newly
2052 # built GCC, so that we can examine its features. This is the linker
2053 # which will be driven by the driver program.
2055 # If build != host, and we aren't building gas in-tree, we identify a
2056 # build->target linker and hope that it will have the same features
2057 # as the host->target linker we'll be using.
2058 gcc_cv_gld_major_version=
2059 gcc_cv_gld_minor_version=
2060 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2061 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2062 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2064 AS_VAR_SET_IF(gcc_cv_ld,, [
2065 if test -x "$DEFAULT_LINKER"; then
2066 gcc_cv_ld="$DEFAULT_LINKER"
2067 elif test $install_gold_as_default = yes \
2068 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2069 && test -f ../gold/Makefile \
2070 && test x$build = x$host; then
2071 gcc_cv_ld=../gold/ld-new$build_exeext
2072 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2073 && test -f ../ld/Makefile \
2074 && test x$build = x$host; then
2075 gcc_cv_ld=../ld/ld-new$build_exeext
2076 elif test -x collect-ld$build_exeext; then
2077 # Build using linker in the current directory.
2078 gcc_cv_ld=./collect-ld$build_exeext
2079 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2080 gcc_cv_ld="$LD_FOR_TARGET"
2082 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2085 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2086 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2087 # if the PLUGIN_LD is set ld-new, just have it as ld
2088 # as that is the installed named.
2089 if test x$PLUGIN_LD_SUFFIX = xld-new \
2090 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2093 AC_ARG_WITH(plugin-ld,
2094 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2095 [if test x"$withval" != x; then
2096 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2097 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2099 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2100 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2102 # Check to see if we are using gold instead of ld
2103 AC_MSG_CHECKING(whether we are using gold)
2105 if test x$gcc_cv_ld != x; then
2106 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2107 | grep "GNU gold" > /dev/null; then
2111 AC_MSG_RESULT($ld_is_gold)
2113 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2114 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2115 case "$ORIGINAL_LD_FOR_TARGET" in
2116 ./collect-ld | ./collect-ld$build_exeext) ;;
2117 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2120 AC_MSG_CHECKING(what linker to use)
2121 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2122 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2123 # Single tree build which includes ld. We want to prefer it
2124 # over whatever linker top-level may have detected, since
2125 # we'll use what we're building after installation anyway.
2126 AC_MSG_RESULT(newly built ld)
2128 in_tree_ld_is_elf=no
2129 if (grep 'EMUL = .*elf' ../ld/Makefile \
2130 || grep 'EMUL = .*linux' ../ld/Makefile \
2131 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2132 in_tree_ld_is_elf=yes
2133 elif test "$ld_is_gold" = yes; then
2134 in_tree_ld_is_elf=yes
2136 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
2139 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2140 if test x$gcc_cv_gld_version != x; then
2144 case $gcc_cv_gld_version in
2147 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2150 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2151 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2153 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2154 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2156 AC_MSG_RESULT($gcc_cv_ld)
2158 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2159 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2160 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2163 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2164 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2166 # Figure out what nm we will be using.
2167 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2168 AS_VAR_SET_IF(gcc_cv_nm,, [
2169 if test -f $gcc_cv_binutils_srcdir/configure.in \
2170 && test -f ../binutils/Makefile \
2171 && test x$build = x$host; then
2172 gcc_cv_nm=../binutils/nm-new$build_exeext
2173 elif test -x nm$build_exeext; then
2174 gcc_cv_nm=./nm$build_exeext
2175 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2176 gcc_cv_nm="$NM_FOR_TARGET"
2178 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2181 AC_MSG_CHECKING(what nm to use)
2182 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2183 # Single tree build which includes binutils.
2184 AC_MSG_RESULT(newly built nm)
2187 AC_MSG_RESULT($gcc_cv_nm)
2191 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2192 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2193 case "$ORIGINAL_NM_FOR_TARGET" in
2194 ./nm | ./nm$build_exeext) ;;
2195 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2199 # Figure out what objdump we will be using.
2200 AS_VAR_SET_IF(gcc_cv_objdump,, [
2201 if test -f $gcc_cv_binutils_srcdir/configure.in \
2202 && test -f ../binutils/Makefile \
2203 && test x$build = x$host; then
2204 # Single tree build which includes binutils.
2205 gcc_cv_objdump=../binutils/objdump$build_exeext
2206 elif test -x objdump$build_exeext; then
2207 gcc_cv_objdump=./objdump$build_exeext
2208 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2209 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2211 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2214 AC_MSG_CHECKING(what objdump to use)
2215 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2216 # Single tree build which includes binutils.
2217 AC_MSG_RESULT(newly built objdump)
2218 elif test x$gcc_cv_objdump = x; then
2219 AC_MSG_RESULT(not found)
2221 AC_MSG_RESULT($gcc_cv_objdump)
2224 # Figure out what readelf we will be using.
2225 AS_VAR_SET_IF(gcc_cv_readelf,, [
2226 if test -f $gcc_cv_binutils_srcdir/configure.in \
2227 && test -f ../binutils/Makefile \
2228 && test x$build = x$host; then
2229 # Single tree build which includes binutils.
2230 gcc_cv_readelf=../binutils/readelf$build_exeext
2231 elif test -x readelf$build_exeext; then
2232 gcc_cv_readelf=./readelf$build_exeext
2234 AC_PATH_PROG(gcc_cv_readelf, readelf)
2237 AC_MSG_CHECKING(what readelf to use)
2238 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2239 # Single tree build which includes binutils.
2240 AC_MSG_RESULT(newly built readelf)
2241 elif test x$gcc_cv_readelf = x; then
2242 AC_MSG_RESULT(not found)
2244 AC_MSG_RESULT($gcc_cv_readelf)
2247 # Figure out what assembler alignment features are present.
2248 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2252 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2253 [Define if your assembler supports .balign and .p2align.])])
2255 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2258 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2259 [Define if your assembler supports specifying the maximum number
2260 of bytes to skip when using the GAS .p2align command.])])
2262 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2265 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2266 [Define if your assembler supports .literal16.])])
2268 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2270 [conftest_label1: .word 0
2272 conftest_label2: .word 0
2274 [if test x$gcc_cv_nm != x; then
2275 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2276 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2277 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2279 else gcc_cv_as_subsection_m1=yes
2281 rm -f conftest.nm1 conftest.nm2
2283 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2284 [Define if your assembler supports .subsection and .subsection -1 starts
2285 emitting at the beginning of your section.])])
2287 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2290 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2292 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2294 [ .weakref foobar, barfnot],,
2295 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2297 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2300 .NSUBSPA $CODE$,COMDAT],,
2301 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2303 # .hidden needs to be supported in both the assembler and the linker,
2304 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2305 # This is irritatingly difficult to feature test for; we have to check the
2306 # date string after the version number. If we've got an in-tree
2307 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2309 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2310 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2314 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2315 # STV_HIDDEN, so disable .hidden support if so.
2317 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2318 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2319 cat > conftest.s <<EOF
2326 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2327 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2328 grep '\.hidden default' > /dev/null; then
2331 gcc_cv_as_hidden=yes
2334 # Assume bug is present if objdump is missing.
2339 gcc_cv_as_hidden=yes
2344 # Darwin as has some visibility support, though with a different syntax.
2345 gcc_cv_as_hidden=yes
2349 # gnu_indirect_function type is an extension proposed at
2350 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2351 # selection of function implementation
2352 AC_ARG_ENABLE(gnu-indirect-function,
2353 [AS_HELP_STRING([--enable-gnu-indirect-function],
2354 [enable the use of the @gnu_indirect_function to glibc systems])],
2355 [case $enable_gnu_indirect_function in
2357 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2358 Valid choices are 'yes' and 'no'.]) ;;
2360 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2362 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2363 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2364 [Define if your system supports gnu indirect functions.])
2368 if test $in_tree_ld != yes ; then
2369 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2370 if echo "$ld_ver" | grep GNU > /dev/null; then
2371 if test x"$ld_is_gold" = xyes; then
2372 # GNU gold --version looks like this:
2374 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2376 # We extract the binutils version which is more familiar and specific
2377 # than the gold version.
2378 ld_vers=`echo $ld_ver | sed -n \
2379 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2381 # GNU ld --version looks like this:
2383 # GNU ld (GNU Binutils) 2.21.51.20110225
2384 ld_vers=`echo $ld_ver | sed -n \
2385 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2387 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2388 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2389 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2390 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2394 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2397 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2398 # /usr/ccs/bin/ld has been configured.
2399 ld_ver=`$gcc_cv_ld -V 2>&1`
2400 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2401 ld_vers=`echo $ld_ver | sed -n \
2402 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2403 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2404 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2412 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2413 [[if test $in_tree_ld = yes ; then
2415 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2416 && test $in_tree_ld_is_elf = yes; then
2417 gcc_cv_ld_hidden=yes
2420 gcc_cv_ld_hidden=yes
2421 if test x"$ld_is_gold" = xyes; then
2423 elif echo "$ld_ver" | grep GNU > /dev/null; then
2425 mmix-knuth-mmixware)
2426 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2430 if test 0"$ld_date" -lt 20020404; then
2431 if test -n "$ld_date"; then
2432 # If there was date string, but was earlier than 2002-04-04, fail
2434 elif test -z "$ld_vers"; then
2435 # If there was no date string nor ld version number, something is wrong
2438 test -z "$ld_vers_patch" && ld_vers_patch=0
2439 if test "$ld_vers_major" -lt 2; then
2441 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2442 gcc_cv_ld_hidden="no"
2443 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2451 # Darwin ld has some visibility support.
2452 gcc_cv_ld_hidden=yes
2454 hppa64*-*-hpux* | ia64*-*-hpux*)
2455 gcc_cv_ld_hidden=yes
2457 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2458 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2459 # .symbolic was only added in Solaris 9 12/02.
2460 gcc_cv_ld_hidden=yes
2468 libgcc_visibility=no
2469 AC_SUBST(libgcc_visibility)
2470 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2471 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2472 libgcc_visibility=yes
2473 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2474 [Define if your assembler and linker support .hidden.])
2477 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2478 gcc_cv_ld_ro_rw_mix=unknown
2479 if test $in_tree_ld = yes ; then
2480 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2481 && test $in_tree_ld_is_elf = yes; then
2482 gcc_cv_ld_ro_rw_mix=read-write
2484 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2485 echo '.section myfoosect, "a"' > conftest1.s
2486 echo '.section myfoosect, "aw"' > conftest2.s
2487 echo '.byte 1' >> conftest2.s
2488 echo '.section myfoosect, "a"' > conftest3.s
2489 echo '.byte 0' >> conftest3.s
2490 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2491 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2492 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2493 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2494 conftest2.o conftest3.o > /dev/null 2>&1; then
2495 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2496 | sed -e '/myfoosect/!d' -e N`
2497 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2498 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2499 gcc_cv_ld_ro_rw_mix=read-only
2501 gcc_cv_ld_ro_rw_mix=read-write
2506 rm -f conftest.* conftest[123].*
2509 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2510 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2511 [Define if your linker links a mix of read-only
2512 and read-write sections into a read-write section.])
2514 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2516 gcc_AC_INITFINI_ARRAY
2518 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2519 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2527 [[# GAS versions before 2.11 do not support uleb128,
2528 # despite appearing to.
2529 # ??? There exists an elf-specific test that will crash
2530 # the assembler. Perhaps it's better to figure out whether
2531 # arbitrary sections are supported and try the test.
2532 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2533 if echo "$as_ver" | grep GNU > /dev/null; then
2534 as_vers=`echo $as_ver | sed -n \
2535 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2536 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2537 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2538 if test $as_major -eq 2 && test $as_minor -lt 11
2540 else gcc_cv_as_leb128=yes
2543 [AC_DEFINE(HAVE_AS_LEB128, 1,
2544 [Define if your assembler supports .sleb128 and .uleb128.])])
2546 # Check if we have assembler support for unwind directives.
2547 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2554 .cfi_escape 1, 2, 3, 4, 5
2558 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2559 # read-only and read-write sections, we need to make sure that the
2560 # assembler used emits read-write .eh_frame sections.
2561 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2562 if test "x$gcc_cv_objdump" != x; then
2563 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2564 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2565 gcc_cv_as_cfi_directive=no
2568 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2569 # On Solaris/x86, make sure that GCC and gas agree on using
2570 # read-only .eh_frame sections for 64-bit.
2571 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2572 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2573 sed -e /.eh_frame/!d -e N | \
2574 grep READONLY > /dev/null; then
2575 gcc_cv_as_cfi_directive=yes
2577 gcc_cv_as_cfi_directive=no
2581 gcc_cv_as_cfi_directive=yes
2586 # no objdump, err on the side of caution
2587 gcc_cv_as_cfi_directive=no
2590 gcc_cv_as_cfi_directive=yes
2594 gcc_cv_as_cfi_directive=yes
2597 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2598 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2602 .cfi_adjust_cfa_offset 64
2604 .cfi_adjust_cfa_offset 128
2607 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2608 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2609 gcc_cv_as_cfi_advance_working=yes
2613 # no objdump, err on the side of caution
2614 gcc_cv_as_cfi_advance_working=no
2616 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2617 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2618 [`if test $gcc_cv_as_cfi_directive = yes \
2619 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2620 [Define 0/1 if your assembler supports CFI directives.])
2622 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2623 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2624 gcc_cv_as_cfi_personality_directive, ,,
2627 .cfi_personality 0, symbol
2629 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2630 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2631 then echo 1; else echo 0; fi`],
2632 [Define 0/1 if your assembler supports .cfi_personality.])
2634 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2635 gcc_cv_as_cfi_sections_directive, ,,
2637 .cfi_sections .debug_frame, .eh_frame
2641 win32 | pe | cygwin* | mingw32* | uwin*)
2642 # Need to check that we generated the correct relocation for the
2643 # .debug_frame section. This was fixed for binutils 2.21.
2644 gcc_cv_as_cfi_sections_directive=no
2645 if test "x$gcc_cv_objdump" != x; then
2646 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2647 grep secrel > /dev/null; then
2648 gcc_cv_as_cfi_sections_directive=yes
2653 gcc_cv_as_cfi_sections_directive=yes
2656 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2657 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2658 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2659 then echo 1; else echo 0; fi`],
2660 [Define 0/1 if your assembler supports .cfi_sections.])
2662 # GAS versions up to and including 2.11.0 may mis-optimize
2664 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2672 .section .eh_frame,"aw",@progbits
2674 .4byte .LECIE1-.LSCIE1
2688 .4byte .LEFDE1-.LASFDE1
2690 .4byte .LASFDE1-__FRAME_BEGIN__
2698 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2699 cat > conftest.lit <<EOF
2700 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2701 0010 01000000 12000000 18000000 00000000 ................
2702 0020 08000000 04080000 0044 .........D @&t@
2704 cat > conftest.big <<EOF
2705 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2706 0010 00000001 00000012 00000018 00000000 ................
2707 0020 00000008 04000000 0844 .........D @&t@
2709 # If the assembler didn't choke, and we can objdump,
2710 # and we got the correct data, then succeed.
2711 # The text in the here-document typically retains its unix-style line
2712 # endings, while the output of objdump will use host line endings.
2713 # Therefore, use diff -b for the comparisons.
2714 if test x$gcc_cv_objdump != x \
2715 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2716 | tail -3 > conftest.got \
2717 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2718 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2720 gcc_cv_as_eh_frame=yes
2721 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2722 gcc_cv_as_eh_frame=buggy
2724 # Uh oh, what do we do now?
2725 gcc_cv_as_eh_frame=no
2728 if test $gcc_cv_as_eh_frame = buggy; then
2729 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2730 [Define if your assembler mis-optimizes .eh_frame data.])
2733 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2734 [elf,2,12,0], [--fatal-warnings],
2735 [.section .rodata.str, "aMS", @progbits, 1])
2736 if test $gcc_cv_as_shf_merge = no; then
2737 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2738 [elf,2,12,0], [--fatal-warnings],
2739 [.section .rodata.str, "aMS", %progbits, 1])
2741 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2742 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2743 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2745 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2746 gcc_cv_as_comdat_group,
2747 [elf,2,16,0], [--fatal-warnings],
2748 [.section .text,"axG",@progbits,.foo,comdat])
2749 if test $gcc_cv_as_comdat_group = yes; then
2750 gcc_cv_as_comdat_group_percent=no
2751 gcc_cv_as_comdat_group_group=no
2753 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2754 gcc_cv_as_comdat_group_percent,
2755 [elf,2,16,0], [--fatal-warnings],
2756 [.section .text,"axG",%progbits,.foo,comdat])
2757 if test $gcc_cv_as_comdat_group_percent = yes; then
2758 gcc_cv_as_comdat_group_group=no
2760 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2761 gcc_cv_as_comdat_group_group=no
2764 # Sun as uses a completely different syntax.
2769 .group foo,".text%foo",#comdat
2770 .section ".text%foo", #alloc,#execinstr,#progbits
2775 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2777 .group foo,.text%foo,#comdat
2778 .section .text%foo, "ax", @progbits
2784 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2785 gcc_cv_as_comdat_group_group,
2791 if test x"$ld_is_gold" = xyes; then
2793 elif test $in_tree_ld = yes ; then
2795 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2796 && test $in_tree_ld_is_elf = yes; then
2799 elif echo "$ld_ver" | grep GNU > /dev/null; then
2801 if test 0"$ld_date" -lt 20050308; then
2802 if test -n "$ld_date"; then
2803 # If there was date string, but was earlier than 2005-03-08, fail
2805 elif test "$ld_vers_major" -lt 2; then
2807 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2814 *-*-solaris2.1[1-9]*)
2816 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2817 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2820 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2821 # least ld version 1.2267.
2822 if test "$ld_vers_major" -gt 1; then
2824 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2826 elif test "$ld_vers_minor" -ge 2267; then
2831 # Assume linkers other than GNU ld don't support COMDAT group.
2837 # Allow overriding the automatic COMDAT group tests above.
2838 AC_ARG_ENABLE(comdat,
2839 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2840 [comdat_group="$enable_comdat"])
2841 if test $comdat_group = no; then
2842 gcc_cv_as_comdat_group=no
2843 gcc_cv_as_comdat_group_percent=no
2844 gcc_cv_as_comdat_group_group=no
2846 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2847 [`if test $gcc_cv_as_comdat_group = yes \
2848 || test $gcc_cv_as_comdat_group_percent = yes \
2849 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2850 [Define 0/1 if your assembler and linker support COMDAT groups.])
2852 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2853 gcc_cv_as_discriminator,
2857 .loc 1 1 0 discriminator 1],,
2858 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2859 [Define if your assembler supports the .loc discriminator sub-directive.])])
2861 # Thread-local storage - the check is heavily parameterized.
2870 .section ".tdata","awT",@progbits
2873 ldq $27,__tls_get_addr($29) !literal!1
2874 lda $16,foo($29) !tlsgd!1
2875 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2876 ldq $27,__tls_get_addr($29) !literal!2
2877 lda $16,foo($29) !tlsldm!2
2878 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2879 ldq $1,foo($29) !gotdtprel
2880 ldah $2,foo($29) !dtprelhi
2881 lda $3,foo($2) !dtprello
2882 lda $4,foo($29) !dtprel
2883 ldq $1,foo($29) !gottprel
2884 ldah $2,foo($29) !tprelhi
2885 lda $3,foo($2) !tprello
2886 lda $4,foo($29) !tprel'
2889 tls_as_opt=--fatal-warnings
2891 cris-*-*|crisv32-*-*)
2893 .section ".tdata","awT",@progbits
2900 tls_as_opt=--fatal-warnings
2904 .section ".tdata","awT",@progbits
2916 .section ".tdata","awT",@progbits
2920 addil LT%foo-$tls_gdidx$,gp
2921 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2924 addil LT%foo-$tls_ldidx$,gp
2926 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2927 addil LR%foo-$tls_dtpoff$,%ret0
2928 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2930 addil LT%foo-$tls_ieoff$,gp
2931 ldw RT%foo-$tls_ieoff$(%r1),%t2
2934 addil LR%foo-$tls_leoff$,%t1
2935 ldo RR%foo-$tls_leoff$(%r1),%t2'
2938 tls_as_opt=--fatal-warnings
2942 .section ".tdata","awT",%progbits
2953 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2955 i[34567]86-*-solaris2.*)
2957 tga_func=___tls_get_addr
2959 x86_64-*-solaris2.1[0-9]*)
2961 tga_func=__tls_get_addr
2967 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2969 .section .tdata,"awt",@progbits'
2973 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2974 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2978 .section ".tdata","awT",@progbits'
2981 tls_as_opt="--fatal-warnings"
2983 conftest_s="$conftest_s
2987 leal foo@tlsgd(,%ebx,1), %eax
2988 leal foo@tlsldm(%ebx), %eax
2989 leal foo@dtpoff(%eax), %edx
2990 movl foo@gottpoff(%ebx), %eax
2991 subl foo@gottpoff(%ebx), %eax
2992 addl foo@gotntpoff(%ebx), %eax
2993 movl foo@indntpoff, %eax
2994 movl \$foo@tpoff, %eax
2995 subl \$foo@tpoff, %eax
2996 leal foo@ntpoff(%ecx), %eax"
3000 .section ".tdata","awT",@progbits
3004 leaq foo@TLSGD(%rip), %rdi
3005 leaq foo@TLSLD(%rip), %rdi
3006 leaq foo@DTPOFF(%rax), %rdx
3007 movq foo@GOTTPOFF(%rip), %rax
3008 movq $foo@TPOFF, %rax'
3011 tls_as_opt=--fatal-warnings
3015 .section ".tdata","awT",@progbits
3018 addl r16 = @ltoff(@dtpmod(foo#)), gp
3019 addl r17 = @ltoff(@dtprel(foo#)), gp
3020 addl r18 = @ltoff(@tprel(foo#)), gp
3021 addl r19 = @dtprel(foo#), gp
3022 adds r21 = @dtprel(foo#), r13
3023 movl r23 = @dtprel(foo#)
3024 addl r20 = @tprel(foo#), gp
3025 adds r22 = @tprel(foo#), r13
3026 movl r24 = @tprel(foo#)'
3029 tls_as_opt=--fatal-warnings
3033 .section .tdata,"awT",@progbits
3037 addik r5,r20,x@TLSGD
3038 addik r5,r20,x@TLSLDM'
3041 tls_as_opt='--fatal-warnings'
3045 .section .tdata,"awT",@progbits
3049 addiu $4, $28, %tlsgd(x)
3050 addiu $4, $28, %tlsldm(x)
3051 lui $4, %dtprel_hi(x)
3052 addiu $4, $4, %dtprel_lo(x)
3053 lw $4, %gottprel(x)($28)
3054 lui $4, %tprel_hi(x)
3055 addiu $4, $4, %tprel_lo(x)'
3058 tls_as_opt='-32 --fatal-warnings'
3062 .section .tdata,"awT",@progbits
3067 move.l x@TLSGD(%a5),%a0
3068 move.l x@TLSLDM(%a5),%a0
3069 move.l x@TLSLDO(%a5),%a0
3070 move.l x@TLSIE(%a5),%a0
3071 move.l x@TLSLE(%a5),%a0'
3074 tls_as_opt='--fatal-warnings'
3078 .section ".tdata","awT",@progbits'
3081 tls_as_opt="--fatal-warnings"
3085 .section ".tdata","awT",%progbits
3089 add x0, x0, #:tlsgd_lo12:x
3094 tls_as_opt='--fatal-warnings'
3098 .extern __get_tpointer
3116 .section ".tdata","awT",@progbits
3124 addi 3,2,ld0@got@tlsgd
3130 addi 3,2,x1@got@tlsld
3136 addis 9,3,x2@dtprel@ha
3137 addi 9,9,x2@dtprel@l
3140 ld 9,x3@got@dtprel(2)
3146 tls_as_opt="-a64 --fatal-warnings"
3150 .section ".tdata","awT",@progbits
3158 addi 3,31,ld0@got@tlsgd
3160 addi 3,31,x1@got@tlsld
3163 addis 9,3,x2@dtprel@ha
3164 addi 9,9,x2@dtprel@l
3165 lwz 9,x3@got@tprel(31)
3168 addis 9,2,x2@tprel@ha
3169 addi 9,9,x2@tprel@l'
3172 tls_as_opt="-a32 --fatal-warnings"
3176 .section ".tdata","awT",@progbits
3185 l %r1,foo@GOTNTPOFF(%r12)
3186 l %r1,0(%r1):tls_load:foo
3187 bas %r14,0(%r1,%r13):tls_gdcall:foo
3188 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3191 tls_as_opt="-m31 --fatal-warnings"
3195 .section ".tdata","awT",@progbits
3203 lg %r1,foo@GOTNTPOFF(%r12)
3204 larl %r1,foo@INDNTPOFF
3205 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3206 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3209 tls_as_opt="-m64 -Aesame --fatal-warnings"
3211 sh-*-* | sh[34]-*-*)
3213 .section ".tdata","awT",@progbits
3223 tls_as_opt=--fatal-warnings
3227 sparc*-sun-solaris2.*)
3229 tga_func=__tls_get_addr
3235 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3237 .section ".tdata",#alloc,#write,#tls'
3242 .section ".tdata","awT",@progbits'
3245 tls_as_opt="-32 --fatal-warnings"
3247 conftest_s="$conftest_s
3250 sethi %tgd_hi22(foo), %o0
3251 add %o0, %tgd_lo10(foo), %o1
3252 add %l7, %o1, %o0, %tgd_add(foo)
3253 call __tls_get_addr, %tgd_call(foo)
3254 sethi %tldm_hi22(foo), %l1
3255 add %l1, %tldm_lo10(foo), %l2
3256 add %l7, %l2, %o0, %tldm_add(foo)
3257 call __tls_get_addr, %tldm_call(foo)
3258 sethi %tldo_hix22(foo), %l3
3259 xor %l3, %tldo_lox10(foo), %l4
3260 add %o0, %l4, %l5, %tldo_add(foo)
3261 sethi %tie_hi22(foo), %o3
3262 add %o3, %tie_lo10(foo), %o3
3263 ld [%l7 + %o3], %o2, %tie_ld(foo)
3264 add %g7, %o2, %o4, %tie_add(foo)
3265 sethi %tle_hix22(foo), %l1
3266 xor %l1, %tle_lox10(foo), %o5
3267 ld [%g7 + %o5], %o1"
3271 .section ".tdata","awT",@progbits
3274 addli r0, zero, tls_gd(foo)
3275 auli r0, zero, tls_gd_ha16(foo)
3276 addli r0, r0, tls_gd_lo16(foo)
3278 addli r0, zero, tls_ie(foo)
3279 auli r0, r0, tls_ie_ha16(foo)
3280 addli r0, r0, tls_ie_lo16(foo)'
3283 tls_as_opt="--fatal-warnings"
3287 .section ".tdata","awT",@progbits
3290 shl16insli r0, zero, hw0_last_tls_gd(foo)
3291 shl16insli r0, zero, hw1_last_tls_gd(foo)
3292 shl16insli r0, r0, hw0_tls_gd(foo)
3294 shl16insli r0, zero, hw1_last_tls_ie(foo)
3295 shl16insli r0, r0, hw0_tls_ie(foo)'
3298 tls_as_opt="--fatal-warnings"
3302 .section ".tdata","awT",@progbits
3305 movi a8, foo@TLSFUNC
3306 movi a10, foo@TLSARG
3307 callx8.tls a8, foo@TLSCALL'
3314 if test "x$enable_tls" = xno ; then
3315 : # TLS explicitly disabled.
3316 elif test "x$enable_tls" = xyes ; then
3317 set_have_as_tls=yes # TLS explicitly enabled.
3318 elif test -z "$tls_first_major"; then
3319 : # If we don't have a check, assume no support.
3321 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3322 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3323 [set_have_as_tls=yes])
3326 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3327 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3328 # Sun style that Sun ld and GCC don't support any longer.
3330 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3332 # Check ld and ld.so.1 TLS support.
3333 if echo "$ld_ver" | grep GNU > /dev/null; then
3334 # Assume all interesting versions of GNU ld have TLS support.
3335 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3339 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3341 min_tls_ld_vers_minor=374
3343 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3344 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3345 min_tls_ld_vers_minor=343
3348 if test "$ld_vers_major" -gt 1 || \
3349 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3355 AC_MSG_RESULT($ld_tls_support)
3358 save_LDFLAGS="$LDFLAGS"
3362 AC_MSG_CHECKING(library containing $tga_func)
3363 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3364 # (32-bit x86) only lived in libthread, so check for that. Keep
3365 # set_have_as_tls if found, disable if not.
3366 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3367 # Clear LIBS if we cannot support TLS.
3368 if test $set_have_as_tls = no; then
3371 # Always define LIB_TLS_SPEC, even without TLS support.
3372 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3373 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3374 AC_MSG_RESULT($LIBS)
3377 LDFLAGS="$save_LDFLAGS"
3380 if test $set_have_as_tls = yes ; then
3381 AC_DEFINE(HAVE_AS_TLS, 1,
3382 [Define if your assembler and linker support thread-local storage.])
3385 # Target-specific assembler checks.
3387 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3388 gcc_cv_ld_static_dynamic=no
3389 gcc_cv_ld_static_option='-Bstatic'
3390 gcc_cv_ld_dynamic_option='-Bdynamic'
3391 if test $in_tree_ld = yes ; then
3392 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3393 gcc_cv_ld_static_dynamic=yes
3395 elif test x$gcc_cv_ld != x; then
3396 # Check if linker supports -Bstatic/-Bdynamic option
3397 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3398 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3399 gcc_cv_ld_static_dynamic=yes
3402 # AIX ld uses -b flags
3403 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3404 gcc_cv_ld_static_dynamic=yes
3405 gcc_cv_ld_static_option="-bstatic"
3406 gcc_cv_ld_dynamic_option="-bdynamic"
3408 # HP-UX ld uses -a flags to select between shared and archive.
3410 if test x"$gnu_ld" = xno; then
3411 gcc_cv_ld_static_dynamic=yes
3412 gcc_cv_ld_static_option="-aarchive_shared"
3413 gcc_cv_ld_dynamic_option="-adefault"
3416 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3418 gcc_cv_ld_static_dynamic=yes
3423 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3424 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3425 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3426 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3427 [Define to the linker option to disable use of shared objects.])
3428 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3429 [Define to the linker option to enable use of shared objects.])
3431 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3433 if test x"$demangler_in_ld" = xyes; then
3434 AC_MSG_CHECKING(linker --demangle support)
3435 gcc_cv_ld_demangle=no
3436 if test $in_tree_ld = yes; then
3437 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3438 gcc_cv_ld_demangle=yes
3440 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3441 # Check if the GNU linker supports --demangle option
3442 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3443 gcc_cv_ld_demangle=yes
3446 if test x"$gcc_cv_ld_demangle" = xyes; then
3447 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3448 [Define if your linker supports --demangle option.])
3450 AC_MSG_RESULT($gcc_cv_ld_demangle)
3453 AC_MSG_CHECKING(linker plugin support)
3455 if test -f liblto_plugin.la; then
3456 save_ld_ver="$ld_ver"
3457 save_ld_vers_major="$ld_vers_major"
3458 save_ld_vers_minor="$ld_vers_minor"
3459 save_ld_is_gold="$ld_is_gold"
3463 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3465 # FIXME: ld_is_gold?
3466 ld_vers_major="$gcc_cv_gld_major_version"
3467 ld_vers_minor="$gcc_cv_gld_minor_version"
3469 # Determine plugin linker version.
3470 # FIXME: Partial duplicate from above, generalize.
3472 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3473 if echo "$ld_ver" | grep GNU > /dev/null; then
3474 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3476 ld_vers=`echo $ld_ver | sed -n \
3477 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3479 ld_vers=`echo $ld_ver | sed -n \
3480 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3482 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3483 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3488 # Determine plugin support.
3489 if echo "$ld_ver" | grep GNU > /dev/null; then
3490 # Require GNU ld or gold 2.21+ for plugin support by default.
3491 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3493 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3494 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3499 ld_ver="$save_ld_ver"
3500 ld_vers_major="$save_ld_vers_major"
3501 ld_vers_minor="$save_ld_vers_minor"
3502 ld_is_gold="$save_ld_is_gold"
3504 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3505 [Define to the level of your linker's plugin support.])
3506 AC_MSG_RESULT($gcc_cv_lto_plugin)
3510 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3511 [-mabi=lp64], [.text],,,)
3512 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3513 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3514 [Define if your assembler supports the -mabi option.])
3516 if test x$with_abi = xilp32; then
3517 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3518 Upgrade the Assembler.])
3520 if test x"$with_multilib_list" = xdefault; then
3521 TM_MULTILIB_CONFIG=lp64
3523 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3524 for aarch64_multilib in ${aarch64_multilibs}; do
3525 case ${aarch64_multilib} in
3527 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3528 Upgrade the Assembler.])
3538 # All TARGET_ABI_OSF targets.
3539 alpha*-*-linux* | alpha*-*-*bsd*)
3540 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3541 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3544 extbl $3, $2, $3 !lituse_bytoff!1
3545 ldq $2, a($29) !literal!1
3546 ldq $4, b($29) !literal!2
3547 ldq_u $3, 0($2) !lituse_base!1
3548 ldq $27, f($29) !literal!5
3549 jsr $26, ($27), f !lituse_jsr!5
3550 ldah $29, 0($26) !gpdisp!3
3551 lda $0, c($29) !gprel
3552 ldah $1, d($29) !gprelhigh
3553 lda $1, d($1) !gprellow
3554 lda $29, 0($29) !gpdisp!3],,
3555 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3556 [Define if your assembler supports explicit relocations.])])
3557 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3558 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3561 ldq $27, a($29) !literal!1
3562 jsr $26, ($27), a !lituse_jsrdirect!1],,
3563 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3564 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3568 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3569 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3570 [-no-mul-bug-abort], [.text],,
3571 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3572 [Define if your assembler supports the -no-mul-bug-abort option.])])
3576 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3577 [.register %g2, #scratch],,
3578 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3579 [Define if your assembler supports .register.])])
3581 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3582 [.section "nobits",#alloc,#write,#nobits
3583 .section "progbits",#alloc,#write,#progbits])
3584 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3585 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3586 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3588 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3590 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3591 [Define if your assembler supports -relax option.])])
3593 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3594 gcc_cv_as_sparc_gotdata_op,,
3601 sethi %gdop_hix22(foo), %g1
3602 xor %g1, %gdop_lox10(foo), %g1
3603 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3604 [if test x$gcc_cv_ld != x \
3605 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3606 if test x$gcc_cv_objdump != x; then
3607 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3608 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3609 gcc_cv_as_sparc_gotdata_op=no
3611 gcc_cv_as_sparc_gotdata_op=yes
3616 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3617 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3619 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3620 gcc_cv_as_sparc_ua_pcrel,,
3628 .uaword %r_disp32(foo)],
3629 [if test x$gcc_cv_ld != x \
3630 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3631 gcc_cv_as_sparc_ua_pcrel=yes
3634 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3635 [Define if your assembler and linker support unaligned PC relative relocs.])
3637 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3638 gcc_cv_as_sparc_ua_pcrel_hidden,,
3643 .uaword %r_disp32(foo)
3644 .byte 0x32, 0x33, 0x34
3649 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3650 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3651 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3652 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3653 if $gcc_cv_objdump -R conftest 2> /dev/null \
3654 | grep 'DISP32' > /dev/null 2>&1; then
3657 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3661 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3662 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3663 ]) # unaligned pcrel relocs
3665 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3666 gcc_cv_as_sparc_offsetable_lo10,,
3669 or %g1, %lo(ab) + 12, %g1
3670 or %g1, %lo(ab + 12), %g1],
3671 [if test x$gcc_cv_objdump != x \
3672 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3673 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3674 gcc_cv_as_sparc_offsetable_lo10=yes
3676 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3677 [Define if your assembler supports offsetable %lo().])])
3679 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3680 gcc_cv_as_sparc_fmaf,,
3683 .register %g2, #scratch
3684 .register %g3, #scratch
3686 fmaddd %f0, %f2, %f4, %f6
3687 addxccc %g1, %g2, %g3
3688 fsrl32 %f2, %f4, %f8
3689 fnaddd %f10, %f12, %f14],,
3690 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3691 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3693 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3694 gcc_cv_as_sparc_sparc4,,
3697 .register %g2, #scratch
3698 .register %g3, #scratch
3701 1: cwbneg %g2, %g3, 1f
3704 aes_kexpand0 %f4, %f6, %f8
3705 des_round %f38, %f40, %f42, %f44
3706 camellia_f %f54, %f56, %f58, %f60
3707 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3708 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3709 [Define if your assembler supports SPARC4 instructions.])])
3711 gcc_GAS_CHECK_FEATURE([LEON instructions],
3712 gcc_cv_as_sparc_leon,,
3715 .register %g2, #scratch
3716 .register %g3, #scratch
3720 cas [[%g2]], %g3, %g1],,
3721 [AC_DEFINE(HAVE_AS_LEON, 1,
3722 [Define if your assembler supports LEON instructions.])])
3726 i[34567]86-*-* | x86_64-*-*)
3730 # Full C++ conformance when using a shared libstdc++-v3 requires some
3731 # support from the Cygwin DLL, which in more recent versions exports
3732 # wrappers to aid in interposing and redirecting operators new, delete,
3733 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3734 # are configuring for a version of Cygwin that exports the wrappers.
3735 if test x$host = x$target && test x$host_cpu = xi686; then
3736 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3738 # Can't check presence of libc functions during cross-compile, so
3739 # we just have to assume we're building for an up-to-date target.
3740 gcc_ac_cygwin_dll_wrappers=yes
3742 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3743 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3744 [Define if you want to generate code by default that assumes that the
3745 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3748 cygwin* | pe | mingw32* | interix*)
3749 # Recent binutils allows the three-operand form of ".comm" on PE. This
3750 # definition is used unconditionally to initialise the default state of
3751 # the target option variable that governs usage of the feature.
3752 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3753 [2,19,52],,[.comm foo,1,32])
3754 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3755 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3756 [Define if your assembler supports specifying the alignment
3757 of objects allocated using the GAS .comm command.])
3758 # Used for DWARF 2 in PE
3759 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3760 gcc_cv_as_ix86_pe_secrel32,
3766 [if test x$gcc_cv_ld != x \
3767 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3768 gcc_cv_as_ix86_pe_secrel32=yes
3771 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3772 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3773 # Test if the assembler supports the extended form of the .section
3774 # directive that specifies section alignment. LTO support uses this,
3775 # but normally only after installation, so we warn but don't fail the
3776 # configure if LTO is enabled but the assembler does not support it.
3777 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3778 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3779 if test x$gcc_cv_as_section_has_align != xyes; then
3780 case ",$enable_languages," in
3782 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3786 # Test if the assembler supports the section flag 'e' for specifying
3787 # an excluded section.
3788 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3792 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3793 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3794 [Define if your assembler supports specifying the section flag e.])
3798 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3799 gcc_cv_as_ix86_filds,,,
3800 [filds mem; fists mem],,
3801 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3802 [Define if your assembler uses filds and fists mnemonics.])])
3804 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3805 gcc_cv_as_ix86_fildq,,,
3806 [fildq mem; fistpq mem],,
3807 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3808 [Define if your assembler uses fildq and fistq mnemonics.])])
3810 gcc_GAS_CHECK_FEATURE([cmov syntax],
3811 gcc_cv_as_ix86_cmov_sun_syntax,,,
3812 [cmovl.l %edx, %eax],,
3813 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3814 [Define if your assembler supports the Sun syntax for cmov.])])
3816 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3817 gcc_cv_as_ix86_ffreep,,,
3819 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3820 [Define if your assembler supports the ffreep mnemonic.])])
3822 gcc_GAS_CHECK_FEATURE([.quad directive],
3823 gcc_cv_as_ix86_quad,,,
3825 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3826 [Define if your assembler supports the .quad directive.])])
3828 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3829 gcc_cv_as_ix86_sahf,,,
3832 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3833 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3835 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3836 gcc_cv_as_ix86_interunit_movq,,,
3840 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3841 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3842 [Define if your assembler supports interunit movq mnemonic.])
3844 gcc_GAS_CHECK_FEATURE([hle prefixes],
3845 gcc_cv_as_ix86_hle,,,
3846 [lock xacquire cmpxchg %esi, (%ecx)],,
3847 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3848 [Define if your assembler supports HLE prefixes.])])
3850 gcc_GAS_CHECK_FEATURE([swap suffix],
3851 gcc_cv_as_ix86_swap,,,
3852 [movl.s %esp, %ebp],,
3853 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3854 [Define if your assembler supports the swap suffix.])])
3856 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3857 gcc_cv_as_ix86_diff_sect_delta,,,
3865 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3866 [Define if your assembler supports the subtraction of symbols in different sections.])])
3868 # These two are used unconditionally by i386.[ch]; it is to be defined
3869 # to 1 if the feature is present, 0 otherwise.
3870 as_ix86_gotoff_in_data_opt=
3871 if test x$gas = xyes; then
3872 as_ix86_gotoff_in_data_opt="--32"
3874 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3875 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3876 [$as_ix86_gotoff_in_data_opt],
3882 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3883 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3884 [Define true if the assembler supports '.long foo@GOTOFF'.])
3886 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3887 gcc_cv_as_ix86_rep_lock_prefix,,,
3893 lock addl %edi, (%eax,%esi)
3894 lock orl $0, (%esp)],,
3895 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3896 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3898 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3899 gcc_cv_as_ix86_ud2,,,
3901 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3902 [Define if your assembler supports the 'ud2' mnemonic.])])
3904 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3905 gcc_cv_as_ix86_tlsgdplt,,,
3906 [call tls_gd@tlsgdplt],
3907 [if test x$gcc_cv_ld != x \
3908 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3909 gcc_cv_as_ix86_tlsgdplt=yes
3912 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3913 [Define if your assembler and linker support @tlsgdplt.])])
3915 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3916 gcc_cv_as_ix86_tlsldmplt,,,
3918 call tls_ld@tlsldmplt],
3919 [if test x$gcc_cv_ld != x \
3920 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3921 gcc_cv_as_ix86_tlsldmplt=yes
3924 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3925 [Define if your assembler and linker support @tlsldmplt.])])
3930 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3931 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3933 addl r15 = @ltoffx(x#), gp
3935 ld8.mov r16 = [[r15]], x#],,
3936 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3937 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3943 *-*-aix*) conftest_s=' .machine "pwr5"
3947 gcc_GAS_CHECK_FEATURE([.machine directive support],
3948 gcc_cv_as_machine_directive,,,
3949 [ .machine ppc7400])
3950 if test x$gcc_cv_as_machine_directive != xyes; then
3951 echo "*** This target requires an assembler supporting \".machine\"" >&2
3952 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3953 test x$build = x$target && exit 1
3957 *) conftest_s=' .machine power4
3962 gcc_GAS_CHECK_FEATURE([mfcr field support],
3963 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3965 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3966 [Define if your assembler supports mfcr field.])])
3969 *-*-aix*) conftest_s=' .machine "pwr5"
3972 *) conftest_s=' .machine power5
3977 gcc_GAS_CHECK_FEATURE([popcntb support],
3978 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3980 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3981 [Define if your assembler supports popcntb field.])])
3984 *-*-aix*) conftest_s=' .machine "pwr5x"
3987 *) conftest_s=' .machine power5
3992 gcc_GAS_CHECK_FEATURE([fp round support],
3993 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3995 [AC_DEFINE(HAVE_AS_FPRND, 1,
3996 [Define if your assembler supports fprnd.])])
3999 *-*-aix*) conftest_s=' .machine "pwr6"
4002 *) conftest_s=' .machine power6
4007 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4008 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4010 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4011 [Define if your assembler supports mffgpr and mftgpr.])])
4014 *-*-aix*) conftest_s=' .csect .text[[PR]]
4016 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4020 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4021 *) conftest_s=' .text
4023 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4026 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4027 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4029 [AC_DEFINE(HAVE_AS_REL16, 1,
4030 [Define if your assembler supports R_PPC_REL16 relocs.])])
4033 *-*-aix*) conftest_s=' .machine "pwr6"
4036 *) conftest_s=' .machine power6
4041 gcc_GAS_CHECK_FEATURE([compare bytes support],
4042 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4044 [AC_DEFINE(HAVE_AS_CMPB, 1,
4045 [Define if your assembler supports cmpb.])])
4048 *-*-aix*) conftest_s=' .machine "pwr6"
4051 *) conftest_s=' .machine power6
4056 gcc_GAS_CHECK_FEATURE([decimal float support],
4057 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4059 [AC_DEFINE(HAVE_AS_DFP, 1,
4060 [Define if your assembler supports DFP instructions.])])
4063 *-*-aix*) conftest_s=' .machine "pwr7"
4066 *) conftest_s=' .machine power7
4071 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4072 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4074 [AC_DEFINE(HAVE_AS_VSX, 1,
4075 [Define if your assembler supports VSX instructions.])])
4078 *-*-aix*) conftest_s=' .machine "pwr7"
4081 *) conftest_s=' .machine power7
4086 gcc_GAS_CHECK_FEATURE([popcntd support],
4087 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4089 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4090 [Define if your assembler supports POPCNTD instructions.])])
4093 *-*-aix*) conftest_s=' .machine "pwr8"
4094 .csect .text[[PR]]';;
4095 *) conftest_s=' .machine power8
4099 gcc_GAS_CHECK_FEATURE([power8 support],
4100 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4102 [AC_DEFINE(HAVE_AS_POWER8, 1,
4103 [Define if your assembler supports POWER8 instructions.])])
4106 *-*-aix*) conftest_s=' .csect .text[[PR]]
4108 *) conftest_s=' .text
4112 gcc_GAS_CHECK_FEATURE([lwsync support],
4113 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4115 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4116 [Define if your assembler supports LWSYNC instructions.])])
4119 *-*-aix*) conftest_s=' .machine "476"
4122 *) conftest_s=' .machine "476"
4127 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4128 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4130 [AC_DEFINE(HAVE_AS_DCI, 1,
4131 [Define if your assembler supports the DCI/ICI instructions.])])
4133 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4134 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4135 [.gnu_attribute 4,1],,
4136 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4137 [Define if your assembler supports .gnu_attribute.])])
4139 gcc_GAS_CHECK_FEATURE([tls marker support],
4140 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4141 [ bl __tls_get_addr(x@tlsgd)],,
4142 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4143 [Define if your assembler supports arg info for __tls_get_addr.])])
4147 gcc_GAS_CHECK_FEATURE([.ref support],
4148 gcc_cv_as_aix_ref, [2,21,0],,
4149 [ .csect stuff[[rw]]
4155 [AC_DEFINE(HAVE_AS_REF, 1,
4156 [Define if your assembler supports .ref])])
4162 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4163 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4164 [ lw $4,%gp_rel(foo)($4)],,
4165 [if test x$target_cpu_default = x
4166 then target_cpu_default=MASK_EXPLICIT_RELOCS
4167 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4169 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4170 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4171 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4172 [Define if the assembler understands -mno-shared.])])
4174 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4175 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4176 [.gnu_attribute 4,1],,
4177 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4178 [Define if your assembler supports .gnu_attribute.])])
4180 gcc_GAS_CHECK_FEATURE([.micromips support],
4181 gcc_cv_as_micromips_support,,[--fatal-warnings],
4183 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4184 [Define if your assembler supports the .set micromips directive])])
4186 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4187 gcc_cv_as_mips_dtprelword, [2,18,0],,
4188 [.section .tdata,"awT",@progbits
4192 .dtprelword x+0x8000],,
4193 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4194 [Define if your assembler supports .dtprelword.])])
4196 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4197 gcc_cv_as_mips_dspr1_mult,,,
4207 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4208 [Define if your assembler supports DSPR1 mult.])])
4210 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4211 gcc_cv_as_ld_jalr_reloc=no
4212 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4213 if test $in_tree_ld = yes ; then
4214 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4215 && test $in_tree_ld_is_elf = yes; then
4216 gcc_cv_as_ld_jalr_reloc=yes
4218 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4219 echo ' .ent x' > conftest.s
4220 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4221 echo ' ld $25,%call16(y)($28)' >> conftest.s
4222 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4223 echo '1: jalr $25' >> conftest.s
4224 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4225 echo '1: jalr $25' >> conftest.s
4226 echo ' .end x' >> conftest.s
4227 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4228 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4229 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4230 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4231 gcc_cv_as_ld_jalr_reloc=yes
4237 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4238 if test x$target_cpu_default = x; then
4239 target_cpu_default=MASK_RELAX_PIC_CALLS
4241 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4244 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4246 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4247 [gcc_cv_ld_mips_personality_relaxation],
4248 [gcc_cv_ld_mips_personality_relaxation=no
4249 if test $in_tree_ld = yes ; then
4250 if test "$gcc_cv_gld_major_version" -eq 2 \
4251 -a "$gcc_cv_gld_minor_version" -ge 21 \
4252 -o "$gcc_cv_gld_major_version" -gt 2; then
4253 gcc_cv_ld_mips_personality_relaxation=yes
4255 elif test x$gcc_cv_as != x \
4256 -a x$gcc_cv_ld != x \
4257 -a x$gcc_cv_readelf != x ; then
4258 cat > conftest.s <<EOF
4260 .cfi_personality 0x80,indirect_ptr
4267 .section .data,"aw",@progbits
4271 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4272 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4273 if $gcc_cv_readelf -d conftest 2>&1 \
4274 | grep TEXTREL > /dev/null 2>&1; then
4276 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4277 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4280 gcc_cv_ld_mips_personality_relaxation=yes
4284 rm -f conftest.s conftest.o conftest])
4285 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4286 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4287 [Define if your linker can relax absolute .eh_frame personality
4288 pointers into PC-relative form.])
4291 gcc_GAS_CHECK_FEATURE([-mnan= support],
4292 gcc_cv_as_mips_nan,,
4294 [AC_DEFINE(HAVE_AS_NAN, 1,
4295 [Define if the assembler understands -mnan=.])])
4296 if test x$gcc_cv_as_mips_nan = xno \
4297 && test x$with_nan != x; then
4299 [Requesting --with-nan= requires assembler support for -mnan=])
4304 # Mips and HP-UX need the GNU assembler.
4305 # Linux on IA64 might be able to use the Intel assembler.
4308 mips*-*-* | *-*-hpux* )
4309 if test x$gas_flag = xyes \
4310 || test x"$host" != x"$build" \
4311 || test ! -x "$gcc_cv_as" \
4312 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4315 echo "*** This configuration requires the GNU assembler" >&2
4321 # ??? Not all targets support dwarf2 debug_line, even within a version
4322 # of gas. Moreover, we need to emit a valid instruction to trigger any
4323 # info to the output file. So, as supported targets are added to gas 2.11,
4324 # add some instruction here to (also) show we expect this might work.
4325 # ??? Once 2.11 is released, probably need to add first known working
4326 # version to the per-target configury.
4328 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4329 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4330 | xstormy16 | xtensa)
4340 if test x"$insn" != x; then
4342 .file 1 \"conftest.s\"
4345 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4346 gcc_cv_as_dwarf2_debug_line,
4347 [elf,2,11,0],, [$conftest_s],
4348 [if test x$gcc_cv_objdump != x \
4349 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4350 | grep debug_line > /dev/null 2>&1; then
4351 gcc_cv_as_dwarf2_debug_line=yes
4354 # The .debug_line file table must be in the exact order that
4355 # we specified the files, since these indices are also used
4356 # by DW_AT_decl_file. Approximate this test by testing if
4357 # the assembler bitches if the same index is assigned twice.
4358 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4359 gcc_cv_as_dwarf2_file_buggy,,,
4363 if test $gcc_cv_as_dwarf2_debug_line = yes \
4364 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4365 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4366 [Define if your assembler supports dwarf2 .file/.loc directives,
4367 and preserves file table indices exactly as given.])
4370 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4371 gcc_cv_as_gdwarf2_flag,
4372 [elf,2,11,0], [--gdwarf2], [$insn],,
4373 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4374 [Define if your assembler supports the --gdwarf2 option.])])
4376 gcc_GAS_CHECK_FEATURE([--gstabs option],
4377 gcc_cv_as_gstabs_flag,
4378 [elf,2,11,0], [--gstabs], [$insn],
4379 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4380 # and warns about it, but still exits successfully. So check for
4382 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4384 else gcc_cv_as_gstabs_flag=yes
4386 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4387 [Define if your assembler supports the --gstabs option.])])
4389 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4390 gcc_cv_as_debug_prefix_map_flag,
4391 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4392 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4393 [Define if your assembler supports the --debug-prefix-map option.])])
4396 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4399 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4400 [Define if your assembler supports .lcomm with an alignment field.])])
4402 if test x$with_sysroot = x && test x$host = x$target \
4403 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4404 && test "$prefix" != "NONE"; then
4405 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4406 [Define to PREFIX/include if cpp should also search that directory.])
4409 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4410 if test "x$with_headers" != x; then
4411 target_header_dir=$with_headers
4412 elif test "x$with_sysroot" = x; then
4413 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4414 elif test "x$with_build_sysroot" != "x"; then
4415 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4416 elif test "x$with_sysroot" = xyes; then
4417 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4419 target_header_dir="${with_sysroot}${native_system_header_dir}"
4422 target_header_dir=${native_system_header_dir}
4425 # Determine the version of glibc, if any, used on the target.
4426 AC_MSG_CHECKING([for target glibc version])
4427 AC_ARG_WITH([glibc-version],
4428 [AS_HELP_STRING([--with-glibc-version=M.N],
4429 [assume GCC used with glibc version M.N or later])], [
4430 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4431 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4432 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4434 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4436 glibc_version_major=0
4437 glibc_version_minor=0
4438 [if test -f $target_header_dir/features.h \
4439 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4440 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4441 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4442 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4444 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4446 AC_ARG_ENABLE(gnu-unique-object,
4447 [AS_HELP_STRING([--enable-gnu-unique-object],
4448 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4449 [case $enable_gnu_unique_object in
4451 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4452 Valid choices are 'yes' and 'no'.]) ;;
4454 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4456 [.type foo, '$target_type_format_char'gnu_unique_object],,
4457 # We need to unquote above to to use the definition from config.gcc.
4458 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4459 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4461 if test x$enable_gnu_unique_object = xyes; then
4462 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4463 [Define if your assembler supports @gnu_unique_object.])
4466 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4467 [gcc_cv_as_line_zero],
4468 [gcc_cv_as_line_zero=no
4469 if test $in_tree_gas = yes; then
4470 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4471 elif test "x$gcc_cv_as" != x; then
4472 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4473 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4474 test "x`cat conftest.out`" = x
4476 gcc_cv_as_line_zero=yes
4478 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4479 cat conftest.s >&AS_MESSAGE_LOG_FD
4480 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4481 cat conftest.out >&AS_MESSAGE_LOG_FD
4483 rm -f conftest.o conftest.s conftest.out
4485 if test "x$gcc_cv_as_line_zero" = xyes; then
4486 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4487 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4490 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4491 gcc_cv_ld_eh_frame_hdr=no
4492 if test $in_tree_ld = yes ; then
4493 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4494 && test $in_tree_ld_is_elf = yes; then
4495 gcc_cv_ld_eh_frame_hdr=yes
4497 elif test x$gcc_cv_ld != x; then
4498 if echo "$ld_ver" | grep GNU > /dev/null; then
4499 # Check if linker supports --eh-frame-hdr option
4500 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4501 gcc_cv_ld_eh_frame_hdr=yes
4506 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4507 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4508 gcc_cv_ld_eh_frame_hdr=yes
4514 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4515 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4516 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4517 [Define if your linker supports .eh_frame_hdr.])
4519 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4521 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4522 gcc_cv_ld_eh_frame_ciev3=no
4523 if test $in_tree_ld = yes ; then
4524 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4525 && test $in_tree_ld_is_elf = yes; then
4526 gcc_cv_ld_eh_frame_ciev3=yes
4528 elif test x$gcc_cv_ld != x; then
4529 if echo "$ld_ver" | grep GNU > /dev/null; then
4530 gcc_cv_ld_eh_frame_ciev3=yes
4531 if test 0"$ld_date" -lt 20040513; then
4532 if test -n "$ld_date"; then
4533 # If there was date string, but was earlier than 2004-05-13, fail
4534 gcc_cv_ld_eh_frame_ciev3=no
4535 elif test "$ld_vers_major" -lt 2; then
4536 gcc_cv_ld_eh_frame_ciev3=no
4537 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4538 gcc_cv_ld_eh_frame_ciev3=no
4544 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4545 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4546 gcc_cv_ld_eh_frame_ciev3=yes
4552 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4553 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4554 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4555 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4557 AC_MSG_CHECKING(linker position independent executable support)
4559 if test $in_tree_ld = yes ; then
4560 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4561 && test $in_tree_ld_is_elf = yes; then
4564 elif test x$gcc_cv_ld != x; then
4565 # Check if linker supports -pie option
4566 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4570 if test x"$gcc_cv_ld_pie" = xyes; then
4571 AC_DEFINE(HAVE_LD_PIE, 1,
4572 [Define if your linker supports -pie option.])
4574 AC_MSG_RESULT($gcc_cv_ld_pie)
4576 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4577 gcc_cv_ld_eh_gc_sections=no
4578 if test $in_tree_ld = yes ; then
4579 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4580 && test $in_tree_ld_is_elf = yes; then
4581 gcc_cv_ld_eh_gc_sections=yes
4583 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4584 cat > conftest.s <<EOF
4587 .type _start, @function
4590 .size _start, .-_start
4591 .section .text.foo,"ax",@progbits
4592 .type foo, @function
4596 .section .gcc_except_table.foo,"a",@progbits
4599 .section .eh_frame,"a",@progbits
4602 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4603 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4604 | grep "gc-sections option ignored" > /dev/null; then
4605 gcc_cv_ld_eh_gc_sections=no
4606 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4607 | grep gcc_except_table > /dev/null; then
4608 gcc_cv_ld_eh_gc_sections=yes
4609 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4610 if test x$gcc_cv_as_comdat_group != xyes; then
4611 gcc_cv_ld_eh_gc_sections=no
4612 cat > conftest.s <<EOF
4615 .type _start, @function
4618 .size _start, .-_start
4619 .section .gnu.linkonce.t.foo,"ax",@progbits
4620 .type foo, @function
4624 .section .gcc_except_table.foo,"a",@progbits
4627 .section .eh_frame,"a",@progbits
4630 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4631 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4632 | grep "gc-sections option ignored" > /dev/null; then
4633 gcc_cv_ld_eh_gc_sections=no
4634 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4635 | grep gcc_except_table > /dev/null; then
4636 gcc_cv_ld_eh_gc_sections=yes
4642 rm -f conftest.s conftest.o conftest
4646 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4647 gcc_cv_ld_eh_gc_sections=no
4650 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4651 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4652 [Define if your linker supports garbage collection of
4653 sections in presence of EH frames.])
4655 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4657 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4658 gcc_cv_ld_eh_gc_sections_bug=no
4659 if test $in_tree_ld = yes ; then
4660 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4661 && test $in_tree_ld_is_elf = yes; then
4662 gcc_cv_ld_eh_gc_sections_bug=yes
4664 elif test x$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
4665 gcc_cv_ld_eh_gc_sections_bug=yes
4666 cat > conftest.s <<EOF
4669 .type _start, @function
4672 .size _start, .-_start
4673 .section .text.startup.foo,"ax",@progbits
4674 .type foo, @function
4678 .section .gcc_except_table.foo,"a",@progbits
4681 .section .eh_frame,"a",@progbits
4684 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4685 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4686 | grep "gc-sections option ignored" > /dev/null; then
4688 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4689 | grep gcc_except_table > /dev/null; then
4690 gcc_cv_ld_eh_gc_sections_bug=no
4693 rm -f conftest.s conftest.o conftest
4695 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4696 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4697 [Define if your linker has buggy garbage collection of
4698 sections support when .text.startup.foo like sections are used.])
4700 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4706 AC_CACHE_CHECK(linker --as-needed support,
4707 gcc_cv_ld_as_needed,
4708 [gcc_cv_ld_as_needed=no
4709 gcc_cv_ld_as_needed_option='--as-needed'
4710 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4711 if test $in_tree_ld = yes ; then
4712 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4713 && test $in_tree_ld_is_elf = yes; then
4714 gcc_cv_ld_as_needed=yes
4716 elif test x$gcc_cv_ld != x; then
4717 # Check if linker supports --as-needed and --no-as-needed options
4718 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4719 gcc_cv_ld_as_needed=yes
4722 # Solaris 2 ld always supports -z ignore/-z record.
4724 gcc_cv_ld_as_needed=yes
4725 gcc_cv_ld_as_needed_option="-z ignore"
4726 gcc_cv_ld_no_as_needed_option="-z record"
4731 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4732 # dl_iterate_phdr, i.e. since Solaris 11.
4734 *-*-solaris2.1[[1-9]]*)
4736 i?86-*-* | x86_64-*-*)
4737 if echo "$ld_ver" | grep GNU > /dev/null; then
4738 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4739 gcc_cv_ld_as_needed=no
4745 gcc_cv_ld_as_needed=no
4749 if test x"$gcc_cv_ld_as_needed" = xyes; then
4750 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4751 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4752 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4753 [Define to the linker option to ignore unused dependencies.])
4754 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4755 [Define to the linker option to keep unused dependencies.])
4758 case "$target:$tm_file" in
4759 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4762 emul_name="-melf64lppc"
4765 emul_name="-melf64ppc"
4768 emul_name="-melf64ppc_fbsd"
4771 AC_CACHE_CHECK(linker support for omitting dot symbols,
4772 gcc_cv_ld_no_dot_syms,
4773 [gcc_cv_ld_no_dot_syms=no
4774 if test x"$ld_is_gold" = xyes; then
4775 gcc_cv_ld_no_dot_syms=yes
4776 elif test $in_tree_ld = yes ; then
4777 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4778 gcc_cv_ld_no_dot_syms=yes
4780 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4781 cat > conftest1.s <<EOF
4785 cat > conftest2.s <<EOF
4786 .section ".opd","aw"
4791 .quad .LEfoo,.TOC.@tocbase,0
4797 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4798 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4799 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4800 gcc_cv_ld_no_dot_syms=yes
4802 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4805 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4806 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4807 [Define if your PowerPC64 linker only needs function descriptor syms.])
4810 AC_CACHE_CHECK(linker large toc support,
4811 gcc_cv_ld_large_toc,
4812 [gcc_cv_ld_large_toc=no
4813 if test x"$ld_is_gold" = xyes; then
4814 gcc_cv_ld_large_toc=yes
4815 elif test $in_tree_ld = yes ; then
4816 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4817 gcc_cv_ld_large_toc=yes
4819 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4820 cat > conftest.s <<EOF
4821 .section ".tbss","awT",@nobits
4827 addis 9,13,ie0@got@tprel@ha
4828 ld 9,ie0@got@tprel@l(9)
4830 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4831 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4832 gcc_cv_ld_large_toc=yes
4834 rm -f conftest conftest.o conftest.s
4837 if test x"$gcc_cv_ld_large_toc" = xyes; then
4838 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4839 [Define if your PowerPC64 linker supports a large TOC.])
4846 AC_CACHE_CHECK(linker large toc support,
4847 gcc_cv_ld_large_toc,
4848 [gcc_cv_ld_large_toc=no
4849 if test x$gcc_cv_as != x ; then
4850 cat > conftest.s <<EOF
4860 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4861 gcc_cv_ld_large_toc=yes
4863 rm -f conftest conftest.o conftest.s
4866 if test x"$gcc_cv_ld_large_toc" = xyes; then
4867 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4868 [Define if your PowerPC64 linker supports a large TOC.])
4873 AC_CACHE_CHECK(linker --build-id support,
4875 [gcc_cv_ld_buildid=no
4876 if test $in_tree_ld = yes ; then
4877 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4878 "$gcc_cv_gld_minor_version" -ge 18 -o \
4879 "$gcc_cv_gld_major_version" -gt 2 \
4880 && test $in_tree_ld_is_elf = yes; then
4881 gcc_cv_ld_buildid=yes
4883 elif test x$gcc_cv_ld != x; then
4884 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4885 gcc_cv_ld_buildid=yes
4888 if test x"$gcc_cv_ld_buildid" = xyes; then
4889 AC_DEFINE(HAVE_LD_BUILDID, 1,
4890 [Define if your linker supports --build-id.])
4893 AC_ARG_ENABLE(linker-build-id,
4894 [AS_HELP_STRING([--enable-linker-build-id],
4895 [compiler will always pass --build-id to linker])],
4897 enable_linker_build_id=no)
4899 if test x"$enable_linker_build_id" = xyes; then
4900 if test x"$gcc_cv_ld_buildid" = xyes; then
4901 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4902 [Define if gcc should always pass --build-id to linker.])
4904 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4908 # In binutils 2.21, GNU ld gained support for new emulations fully
4909 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4910 AC_CACHE_CHECK(linker *_sol2 emulation support,
4911 gcc_cv_ld_sol2_emulation,
4912 [gcc_cv_ld_sol2_emulation=no
4913 if test $in_tree_ld = yes ; then
4914 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4915 "$gcc_cv_gld_minor_version" -ge 21 -o \
4916 "$gcc_cv_gld_major_version" -gt 2 \
4917 && test $in_tree_ld_is_elf = yes; then
4918 gcc_cv_ld_sol2_emulation=yes
4920 elif test x$gcc_cv_ld != x; then
4921 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4922 grep _sol2 > /dev/null; then
4923 gcc_cv_ld_sol2_emulation=yes
4926 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4927 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4928 [Define if your linker supports the *_sol2 emulations.])
4931 AC_CACHE_CHECK(linker --sysroot support,
4933 [gcc_cv_ld_sysroot=no
4934 if test $in_tree_ld = yes ; then
4935 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4936 gcc_cv_ld_sysroot=yes
4938 elif test x$gcc_cv_ld != x; then
4939 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4940 gcc_cv_ld_sysroot=yes
4943 if test x"$gcc_cv_ld_sysroot" = xyes; then
4944 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4945 [Define if your linker supports --sysroot.])
4948 # Test for stack protector support in target C library.
4949 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4950 gcc_cv_libc_provides_ssp,
4951 [gcc_cv_libc_provides_ssp=no
4953 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4954 # glibc 2.4 and later provides __stack_chk_fail and
4955 # either __stack_chk_guard, or TLS access to stack guard canary.
4956 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
4957 [if test -f $target_header_dir/features.h \
4958 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4959 $target_header_dir/features.h > /dev/null; then
4960 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4961 $target_header_dir/features.h > /dev/null && \
4962 test -f $target_header_dir/bits/uClibc_config.h && \
4963 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4964 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4965 gcc_cv_libc_provides_ssp=yes
4967 # all versions of Bionic support stack protector
4968 elif test -f $target_header_dir/sys/cdefs.h \
4969 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4970 $target_header_dir/sys/cdefs.h > /dev/null; then
4971 gcc_cv_libc_provides_ssp=yes
4975 # Avoid complicated tests (see
4976 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4977 # simply assert that glibc does provide this, which is true for all
4978 # realistically usable GNU/Hurd configurations.
4979 gcc_cv_libc_provides_ssp=yes;;
4980 *-*-darwin* | *-*-freebsd*)
4981 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4982 [echo "no __stack_chk_fail on this target"])
4984 *) gcc_cv_libc_provides_ssp=no ;;
4987 if test x$gcc_cv_libc_provides_ssp = xyes; then
4988 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4989 [Define if your target C library provides stack protector support])
4992 # Test for <sys/sdt.h> on the target.
4993 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4994 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4996 if test -f $target_header_dir/sys/sdt.h; then
4998 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4999 [Define if your target C library provides sys/sdt.h])
5001 AC_MSG_RESULT($have_sys_sdt_h)
5003 # Check if TFmode long double should be used by default or not.
5004 # Some glibc targets used DFmode long double, but with glibc 2.4
5005 # and later they can use TFmode.
5007 powerpc*-*-linux* | \
5011 AC_ARG_WITH(long-double-128,
5012 [AS_HELP_STRING([--with-long-double-128],
5013 [use 128-bit long double by default])],
5014 gcc_cv_target_ldbl128="$with_long_double_128",
5015 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5016 [gcc_cv_target_ldbl128=no
5017 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5018 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5019 && gcc_cv_target_ldbl128=yes
5023 if test x$gcc_cv_target_ldbl128 = xyes; then
5024 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5025 [Define if TFmode long double should be the default])
5028 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5029 gcc_cv_target_dl_iterate_phdr=unknown
5031 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5032 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5033 # libdl there, both complicating its use and breaking compatibility
5034 # between Solaris 10 updates.
5035 *-*-solaris2.1[[1-9]]*)
5036 # <link.h> needs both a dl_iterate_phdr declaration and support for
5037 # compilation with largefile support.
5038 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5039 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5040 gcc_cv_target_dl_iterate_phdr=yes
5042 gcc_cv_target_dl_iterate_phdr=no
5046 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5047 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5048 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5049 [Define if your target C library provides the `dl_iterate_phdr' function.])
5051 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5053 # We no longer support different GC mechanisms. Emit an error if
5054 # the user configures with --with-gc.
5056 [AS_HELP_STRING([--with-gc={page,zone}],
5057 [this option is not supported anymore. It used to choose
5058 the garbage collection mechanism to use with the compiler])],
5059 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5062 # Libraries to use on the host. This will normally be set by the top
5063 # level Makefile. Here we simply capture the value for our Makefile.
5064 if test -z "${HOST_LIBS+set}"; then
5069 # Use the system's zlib library.
5071 zlibinc="-I\$(srcdir)/../zlib"
5072 AC_ARG_WITH(system-zlib,
5073 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5080 dnl Very limited version of automake's enable-maintainer-mode
5082 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5083 dnl maintainer-mode is disabled by default
5084 AC_ARG_ENABLE(maintainer-mode,
5085 [AS_HELP_STRING([--enable-maintainer-mode],
5086 [enable make rules and dependencies not useful
5087 (and sometimes confusing) to the casual installer])],
5088 maintainer_mode=$enableval,
5091 AC_MSG_RESULT($maintainer_mode)
5093 if test "$maintainer_mode" = "yes"; then
5100 dnl Whether to prevent multiple front-ends from linking at the same time
5102 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5103 AC_ARG_ENABLE(link-mutex,
5104 [AS_HELP_STRING([--enable-link-mutex],
5105 [avoid linking multiple front-ends at once to avoid thrashing
5106 on the build machine])],
5107 do_link_mutex=$enableval,
5109 AC_MSG_RESULT($do_link_mutex)
5111 if test "$do_link_mutex" = "yes"; then
5116 AC_SUBST(DO_LINK_MUTEX)
5122 # Make empty files to contain the specs and options for each language.
5123 # Then add #include lines to for a compiler that has specs and/or options.
5129 # These (without "all_") are set in each config-lang.in.
5130 # `language' must be a single word so is spelled singularly.
5133 all_outputs='Makefile'
5134 # List of language makefile fragments.
5136 # Additional files for gengtype
5137 all_gtfiles="$target_gtfiles"
5139 # These are the languages that are set in --enable-languages,
5140 # and are available in the GCC tree.
5141 all_selected_languages=
5143 # Add the language fragments.
5144 # Languages are added via two mechanisms. Some information must be
5145 # recorded in makefile variables, these are defined in config-lang.in.
5146 # We accumulate them and plug them into the main Makefile.
5147 # The other mechanism is a set of hooks for each of the main targets
5148 # like `clean', `install', etc.
5150 language_hooks="Make-hooks"
5152 for lang in ${srcdir}/*/config-lang.in
5155 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5157 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5158 if test "x$lang_alias" = x
5160 echo "$lang doesn't set \$language." 1>&2
5163 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5164 subdirs="$subdirs $subdir"
5166 # $gcc_subdir is where the gcc integration files are to be found
5167 # for a language, both for internal compiler purposes (compiler
5168 # sources implementing front-end to GCC tree converters), and for
5169 # build infrastructure purposes (Make-lang.in, etc.)
5171 # This will be <subdir> (relative to $srcdir) if a line like
5172 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5173 # is found in <langdir>/config-lang.in, and will remain <langdir>
5176 # Except for the language alias (fetched above), the regular
5177 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5178 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5179 # only this and the language alias.
5181 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5182 if [ "$gcc_subdir" = "" ]; then
5183 gcc_subdir="$subdir"
5186 case ",$enable_languages," in
5188 all_selected_languages="$all_selected_languages $lang_alias"
5189 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5190 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5202 . ${srcdir}/$gcc_subdir/config-lang.in
5203 if test "x$language" = x
5205 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5210 case ",$enable_languages," in
5213 for i in $subdir_requires; do
5214 test -f "${srcdir}/$i/config-lang.in" && continue
5222 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5223 if test -f $srcdir/$gcc_subdir/lang.opt; then
5224 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5225 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5227 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5228 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5230 all_languages="$all_languages $language"
5231 all_compilers="$all_compilers $compilers"
5232 all_outputs="$all_outputs $outputs"
5233 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5234 case ",$enable_languages," in
5236 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5238 AC_SUBST(enable_lto)
5245 for language in $all_selected_languages
5247 check_languages="$check_languages check-$language"
5250 # We link each language in with a set of hooks, reached indirectly via
5251 # lang.${target}. Only do so for selected languages.
5255 target_list="all.cross start.encap rest.encap tags \
5256 install-common install-man install-info install-pdf install-html dvi \
5257 pdf html uninstall info man srcextra srcman srcinfo \
5258 mostlyclean clean distclean maintainer-clean install-plugin"
5260 for t in $target_list
5263 for lang in $all_selected_languages
5267 echo "lang.$t: $x" >> Make-hooks
5271 # Option include files
5274 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5275 option_includes="option-includes.mk"
5276 AC_SUBST_FILE(option_includes)
5284 echo "dir ." > .gdbinit
5285 echo "dir ${srcdir}" >> .gdbinit
5286 if test x$gdb_needs_out_file_path = xyes
5288 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5290 if test "x$subdirs" != x; then
5293 echo "dir ${srcdir}/$s" >> .gdbinit
5296 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5297 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5299 # Put a breakpoint on __asan_report_error to help with debugging buffer
5302 *-fsanitize=address*)
5303 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5307 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5308 AC_SUBST(gcc_tooldir)
5311 # Find a directory in which to install a shared libgcc.
5313 AC_ARG_ENABLE(version-specific-runtime-libs,
5314 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5315 [specify that runtime libraries should be
5316 installed in a compiler-specific directory])])
5318 # Substitute configuration variables
5321 AC_SUBST(all_compilers)
5322 AC_SUBST(all_gtfiles)
5323 AC_SUBST(all_lang_makefrags)
5324 AC_SUBST(all_languages)
5325 AC_SUBST(all_selected_languages)
5326 AC_SUBST(build_exeext)
5327 AC_SUBST(build_install_headers_dir)
5328 AC_SUBST(build_xm_file_list)
5329 AC_SUBST(build_xm_include_list)
5330 AC_SUBST(build_xm_defines)
5331 AC_SUBST(build_file_translate)
5332 AC_SUBST(check_languages)
5333 AC_SUBST(cpp_install_dir)
5334 AC_SUBST(xmake_file)
5335 AC_SUBST(tmake_file)
5336 AC_SUBST(TM_ENDIAN_CONFIG)
5337 AC_SUBST(TM_MULTILIB_CONFIG)
5338 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5339 AC_SUBST(extra_gcc_objs)
5340 AC_SUBST(user_headers_inc_next_pre)
5341 AC_SUBST(user_headers_inc_next_post)
5342 AC_SUBST(extra_headers_list)
5343 AC_SUBST(extra_objs)
5344 AC_SUBST(extra_programs)
5345 AC_SUBST(float_h_file)
5346 AC_SUBST(gcc_config_arguments)
5347 AC_SUBST(gcc_gxx_include_dir)
5348 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5349 AC_SUBST(host_exeext)
5350 AC_SUBST(host_xm_file_list)
5351 AC_SUBST(host_xm_include_list)
5352 AC_SUBST(host_xm_defines)
5353 AC_SUBST(out_host_hook_obj)
5355 AC_SUBST(lang_opt_files)
5356 AC_SUBST(lang_specs_files)
5357 AC_SUBST(lang_tree_files)
5358 AC_SUBST(local_prefix)
5360 AC_SUBST(objc_boehm_gc)
5362 AC_SUBST(out_object_file)
5363 AC_SUBST(common_out_file)
5364 AC_SUBST(common_out_object_file)
5365 AC_SUBST(tm_file_list)
5366 AC_SUBST(tm_include_list)
5367 AC_SUBST(tm_defines)
5368 AC_SUBST(tm_p_file_list)
5369 AC_SUBST(tm_p_include_list)
5370 AC_SUBST(xm_file_list)
5371 AC_SUBST(xm_include_list)
5372 AC_SUBST(xm_defines)
5373 AC_SUBST(use_gcc_stdint)
5374 AC_SUBST(c_target_objs)
5375 AC_SUBST(cxx_target_objs)
5376 AC_SUBST(fortran_target_objs)
5377 AC_SUBST(target_cpu_default)
5379 AC_SUBST_FILE(language_hooks)
5382 if test x${build} = x${host} ; then
5383 if test x${host} = x${target} ; then
5384 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5386 echo "Links are now set up to build a cross-compiler" 1>&2
5387 echo " from ${host} to ${target}." 1>&2
5390 if test x${host} = x${target} ; then
5391 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5392 echo " for ${target}." 1>&2
5394 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5395 echo " from ${host} to ${target}." 1>&2
5399 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5400 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5402 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5403 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5405 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5406 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5407 if test "x${CLOOGLIBS}" != "x" ; then
5408 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5411 # Check for plugin support
5412 AC_ARG_ENABLE(plugin,
5413 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5414 enable_plugin=$enableval,
5415 enable_plugin=yes; default_plugin=yes)
5421 if test x$build = x$host; then
5422 export_sym_check="nm${exeext} -g"
5423 elif test x$host = x$target; then
5424 export_sym_check="$gcc_cv_nm -g"
5430 if test x$build = x$host; then
5431 export_sym_check="objdump${exeext} -T"
5432 elif test x$host = x$target; then
5433 export_sym_check="$gcc_cv_objdump -T"
5440 if test x"$enable_plugin" = x"yes"; then
5442 AC_MSG_CHECKING([for exported symbols])
5443 if test "x$export_sym_check" != x; then
5444 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5445 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5446 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5447 : # No need to use a flag
5448 AC_MSG_RESULT([yes])
5450 AC_MSG_RESULT([yes])
5451 AC_MSG_CHECKING([for -rdynamic])
5452 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5453 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5455 pluginlibs="-rdynamic"
5460 AC_MSG_RESULT([$plugin_rdynamic])
5463 AC_MSG_RESULT([unable to check])
5468 AC_SEARCH_LIBS([dlopen], [dl])
5469 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5470 pluginlibs="$pluginlibs -ldl"
5474 # Check that we can build shared objects with -fPIC -shared
5475 saved_LDFLAGS="$LDFLAGS"
5476 saved_CFLAGS="$CFLAGS"
5479 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5480 CFLAGS="$CFLAGS -fPIC"
5481 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5484 CFLAGS="$CFLAGS -fPIC"
5485 LDFLAGS="$LDFLAGS -fPIC -shared"
5488 AC_MSG_CHECKING([for -fPIC -shared])
5490 [extern int X;],[return X == 0;],
5491 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5492 [AC_MSG_RESULT([no]); have_pic_shared=no])
5493 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5497 LDFLAGS="$saved_LDFLAGS"
5498 CFLAGS="$saved_CFLAGS"
5500 # If plugin support had been requested but not available, fail.
5501 if test x"$enable_plugin" = x"no" ; then
5502 if test x"$default_plugin" != x"yes"; then
5504 Building GCC with plugin support requires a host that supports
5505 -fPIC, -shared, -ldl and -rdynamic.])
5510 AC_SUBST(pluginlibs)
5511 AC_SUBST(enable_plugin)
5512 if test x"$enable_plugin" = x"yes"; then
5513 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5517 # Enable --enable-host-shared
5518 AC_ARG_ENABLE(host-shared,
5519 [AS_HELP_STRING([--enable-host-shared],
5520 [build host code as shared libraries])],
5521 [PICFLAG=-fPIC], [PICFLAG=])
5522 AC_SUBST(enable_host_shared)
5526 AC_ARG_ENABLE(libquadmath-support,
5527 [AS_HELP_STRING([--disable-libquadmath-support],
5528 [disable libquadmath support for Fortran])],
5529 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5530 ENABLE_LIBQUADMATH_SUPPORT=yes)
5531 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5532 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5533 [Define to 1 to enable libquadmath support])
5537 # Specify what hash style to use by default.
5538 AC_ARG_WITH([linker-hash-style],
5539 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5540 [specify the linker hash style])],
5541 [case x"$withval" in
5543 LINKER_HASH_STYLE=sysv
5546 LINKER_HASH_STYLE=gnu
5549 LINKER_HASH_STYLE=both
5552 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5555 [LINKER_HASH_STYLE=''])
5556 if test x"${LINKER_HASH_STYLE}" != x; then
5557 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5558 [The linker hash style])
5561 # Configure the subdirectories
5562 # AC_CONFIG_SUBDIRS($subdirs)
5564 # Create the Makefile
5565 # and configure language subdirectories
5566 AC_CONFIG_FILES($all_outputs)
5568 AC_CONFIG_COMMANDS([default],
5570 case ${CONFIG_HEADERS} in
5571 *auto-host.h:config.in*)
5574 # Make sure all the subdirs exist.
5575 for d in $subdirs doc build common c-family
5577 test -d $d || mkdir $d
5580 [subdirs='$subdirs'])