2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
282 ACX_PROG_GNAT([-I"$srcdir"/ada])
284 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
285 # optimizations to be activated explicitly by the toplevel.
288 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
289 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
294 # Determine PICFLAG for target gnatlib.
295 GCC_PICFLAG_FOR_TARGET
296 AC_SUBST(PICFLAG_FOR_TARGET)
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
308 # sizeof(char) is 1 by definition.
309 AC_CHECK_SIZEOF(void *)
310 AC_CHECK_SIZEOF(short)
312 AC_CHECK_SIZEOF(long)
313 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
314 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
317 # ---------------------
318 # Warnings and checking
319 # ---------------------
321 # Check $CC warning features (if it's GCC).
322 # We want to use -pedantic, but we don't want warnings about
326 # * C++11 narrowing conversions in { }
327 # So, we only use -pedantic if we can disable those warnings.
329 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
330 AC_ARG_ENABLE(build-format-warnings,
331 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
332 [],[enable_build_format_warnings=yes])
333 AS_IF([test $enable_build_format_warnings = no],
334 [wf_opt=-Wno-format],[wf_opt=])
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
344 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
345 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
346 [-Wno-overlength-strings])), [strict_warn])
347 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
349 # The above macros do nothing if the compiler is not GCC. However, the
350 # Makefile has more goo to add other flags, so these variables are used
351 # to enable warnings only for GCC.
354 if test "x$GCC" = "xyes"; then
355 warn_cflags='$(GCC_WARN_CFLAGS)'
356 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
358 AC_SUBST(warn_cflags)
359 AC_SUBST(warn_cxxflags)
361 # Disable exceptions and RTTI if building with g++
362 ACX_PROG_CC_WARNING_OPTS(
363 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
366 # Enable expensive internal checks
368 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
372 AC_ARG_ENABLE(checking,
373 [AS_HELP_STRING([[--enable-checking[=LIST]]],
374 [enable expensive run-time checks. With LIST,
375 enable only specific categories of checks.
376 Categories are: yes,no,all,none,release.
377 Flags are: assert,df,fold,gc,gcac,gimple,misc,
378 rtlflag,rtl,runtime,tree,valgrind,types])],
379 [ac_checking_flags="${enableval}"],[
380 # Determine the default checks.
381 if test x$is_release = x ; then
382 ac_checking_flags=yes
384 ac_checking_flags=release
386 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
387 for check in release $ac_checking_flags
390 # these set all the flags to specific states
391 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking=1 ;
393 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
394 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
395 ac_tree_checking=1 ; ac_valgrind_checking= ;
396 ac_types_checking=1 ;;
397 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
398 ac_fold_checking= ; ac_gc_checking= ;
399 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
400 ac_rtlflag_checking= ; ac_runtime_checking= ;
401 ac_tree_checking= ; ac_valgrind_checking= ;
402 ac_types_checking= ;;
403 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
404 ac_fold_checking=1 ; ac_gc_checking=1 ;
405 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
406 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
407 ac_tree_checking=1 ; ac_valgrind_checking= ;
408 ac_types_checking=1 ;;
409 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
410 ac_fold_checking= ; ac_gc_checking= ;
411 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
412 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
413 ac_tree_checking= ; ac_valgrind_checking= ;
414 ac_types_checking= ;;
415 # these enable particular checks
416 assert) ac_assert_checking=1 ;;
417 df) ac_df_checking=1 ;;
418 fold) ac_fold_checking=1 ;;
419 gc) ac_gc_checking=1 ;;
420 gcac) ac_gc_always_collect=1 ;;
421 gimple) ac_gimple_checking=1 ;;
422 misc) ac_checking=1 ;;
423 rtl) ac_rtl_checking=1 ;;
424 rtlflag) ac_rtlflag_checking=1 ;;
425 runtime) ac_runtime_checking=1 ;;
426 tree) ac_tree_checking=1 ;;
427 types) ac_types_checking=1 ;;
428 valgrind) ac_valgrind_checking=1 ;;
429 *) AC_MSG_ERROR(unknown check category $check) ;;
435 if test x$ac_checking != x ; then
436 AC_DEFINE(ENABLE_CHECKING, 1,
437 [Define if you want more run-time sanity checks. This one gets a grab
438 bag of miscellaneous but relatively cheap checks.])
439 nocommon_flag=-fno-common
441 AC_SUBST(nocommon_flag)
442 if test x$ac_df_checking != x ; then
443 AC_DEFINE(ENABLE_DF_CHECKING, 1,
444 [Define if you want more run-time sanity checks for dataflow.])
446 if test x$ac_assert_checking != x ; then
447 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
448 [Define if you want assertions enabled. This is a cheap check.])
450 if test x$ac_gimple_checking != x ; then
451 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
452 [Define if you want operations on GIMPLE (the basic data structure of
453 the high-level optimizers) to be checked for dynamic type safety at
454 runtime. This is moderately expensive.])
456 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
457 if test x$ac_runtime_checking != x ; then
458 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
459 [Define if you want runtime assertions enabled. This is a cheap check.])
461 if test x$ac_tree_checking != x ; then
462 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
463 [Define if you want all operations on trees (the basic data
464 structure of the front ends) to be checked for dynamic type safety
465 at runtime. This is moderately expensive. The tree browser debugging
466 routines will also be enabled by this option.
468 TREEBROWSER=tree-browser.o
471 if test x$ac_types_checking != x ; then
472 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
473 [Define if you want all gimple types to be verified after gimplifiation.
477 AC_SUBST(TREEBROWSER)
478 AC_SUBST(TREECHECKING)
479 if test x$ac_rtl_checking != x ; then
480 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
481 [Define if you want all operations on RTL (the basic data structure
482 of the optimizer and back end) to be checked for dynamic type safety
483 at runtime. This is quite expensive.])
485 if test x$ac_rtlflag_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
487 [Define if you want RTL flag accesses to be checked against the RTL
488 codes that are supported for each access macro. This is relatively
491 if test x$ac_gc_checking != x ; then
492 AC_DEFINE(ENABLE_GC_CHECKING, 1,
493 [Define if you want the garbage collector to do object poisoning and
494 other memory allocation checks. This is quite expensive.])
496 if test x$ac_gc_always_collect != x ; then
497 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
498 [Define if you want the garbage collector to operate in maximally
499 paranoid mode, validating the entire heap and collecting garbage at
500 every opportunity. This is extremely expensive.])
502 if test x$ac_fold_checking != x ; then
503 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
504 [Define if you want fold checked that it never destructs its argument.
505 This is quite expensive.])
507 valgrind_path_defines=
510 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
511 dnl # an if statement. This was the source of very frustrating bugs
512 dnl # in converting to autoconf 2.5x!
513 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
515 if test x$ac_valgrind_checking != x ; then
516 # It is certainly possible that there's valgrind but no valgrind.h.
517 # GCC relies on making annotations so we must have both.
518 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
519 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
520 [[#include <valgrind/memcheck.h>
521 #ifndef VALGRIND_DISCARD
522 #error VALGRIND_DISCARD not defined
524 [gcc_cv_header_valgrind_memcheck_h=yes],
525 [gcc_cv_header_valgrind_memcheck_h=no])
526 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
527 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
528 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
529 [[#include <memcheck.h>
530 #ifndef VALGRIND_DISCARD
531 #error VALGRIND_DISCARD not defined
533 [gcc_cv_header_memcheck_h=yes],
534 [gcc_cv_header_memcheck_h=no])
535 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
536 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
537 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
538 if test "x$valgrind_path" = "x" \
539 || (test $have_valgrind_h = no \
540 && test $gcc_cv_header_memcheck_h = no \
541 && test $gcc_cv_header_valgrind_memcheck_h = no); then
542 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
544 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
545 valgrind_command="$valgrind_path -q"
546 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
547 [Define if you want to run subprograms and generated programs
548 through valgrind (a memory checker). This is extremely expensive.])
549 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
550 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
551 [Define if valgrind's valgrind/memcheck.h header is installed.])
553 if test $gcc_cv_header_memcheck_h = yes; then
554 AC_DEFINE(HAVE_MEMCHECK_H, 1,
555 [Define if valgrind's memcheck.h header is installed.])
558 AC_SUBST(valgrind_path_defines)
559 AC_SUBST(valgrind_command)
561 # Enable code coverage collection
562 AC_ARG_ENABLE(coverage,
563 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
564 [enable compiler's code coverage collection.
565 Use to measure compiler performance and locate
566 unused parts of the compiler. With LEVEL, specify
567 optimization. Values are opt, noopt,
569 [case "${enableval}" in
571 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
577 # a.k.a. --disable-coverage
581 AC_MSG_ERROR(unknown coverage setting $enableval)
585 AC_SUBST(coverage_flags)
587 AC_ARG_ENABLE(gather-detailed-mem-stats,
588 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
589 [enable detailed memory allocation stats gathering])], [],
590 [enable_gather_detailed_mem_stats=no])
591 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
592 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
593 [Define to enable detailed memory allocation stats gathering.])
595 # -------------------------------
596 # Miscenalleous configure options
597 # -------------------------------
601 [AS_HELP_STRING([--with-stabs],
602 [arrange to use stabs instead of host debug format])],
606 # Determine whether or not multilibs are enabled.
607 AC_ARG_ENABLE(multilib,
608 [AS_HELP_STRING([--enable-multilib],
609 [enable library support for multiple ABIs])],
610 [], [enable_multilib=yes])
611 AC_SUBST(enable_multilib)
613 # Determine whether or not multiarch is enabled.
614 AC_ARG_ENABLE(multiarch,
615 [AS_HELP_STRING([--enable-multiarch],
616 [enable support for multiarch paths])],
617 [case "${enableval}" in
618 yes|no|auto) enable_multiarch=$enableval;;
619 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
620 esac], [enable_multiarch=auto])
621 if test x${enable_multiarch} = xauto; then
622 if test x${with_native_system_header_dir} != x; then
623 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
626 if test x$host != x$target && test "x$with_sysroot" = x; then
627 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
631 AC_MSG_CHECKING(for multiarch configuration)
632 AC_SUBST(enable_multiarch)
633 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
635 # needed for setting the multiarch name for soft-float/hard-float ABIs
639 # Enable __cxa_atexit for C++.
640 AC_ARG_ENABLE(__cxa_atexit,
641 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
644 # Enable C extension for decimal float if target supports it.
645 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
647 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
648 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
649 [Define to 1 to enable decimal float extension to C.])
651 # Use default_decimal_float for dependency.
652 enable_decimal_float=$default_decimal_float
654 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
655 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
656 [Define to 1 to specify that we are using the BID decimal floating
657 point format instead of DPD])
659 # Enable C extension for fixed-point arithmetic.
660 AC_ARG_ENABLE(fixed-point,
661 [AS_HELP_STRING([--enable-fixed-point],
662 [enable fixed-point arithmetic extension to C])],
667 enable_fixed_point=yes
671 enable_fixed_point=yes
674 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
675 enable_fixed_point=no
679 AC_SUBST(enable_fixed_point)
681 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
682 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
683 [Define to 1 to enable fixed-point arithmetic extension to C.])
686 # Pass with no value to take the default
687 # Pass with a value to specify a thread package
688 AC_ARG_ENABLE(threads,
689 [AS_HELP_STRING([[--enable-threads[=LIB]]],
690 [enable thread usage for target GCC,
691 using LIB thread package])],,
695 [AS_HELP_STRING([--enable-tls],
696 [enable or disable generation of tls code
697 overriding the assembler check for tls support])],
701 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
702 Valid choices are 'yes' and 'no'.]) ;;
706 AC_ARG_ENABLE(objc-gc,
707 [AS_HELP_STRING([--enable-objc-gc],
708 [enable the use of Boehm's garbage collector with
709 the GNU Objective-C runtime])],
710 if test x$enable_objc_gc = xno; then
718 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
719 dwarf2="$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 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1533 LDFLAGS="${LDFLAGS_FOR_BUILD}" GMPINC="" \
1534 ${realsrcdir}/configure \
1535 --enable-languages=${enable_languages-all} \
1536 --target=$target_alias --host=$build_alias --build=$build_alias
1538 # We just finished tests for the build machine, so rename
1539 # the file auto-build.h in the gcc directory.
1540 mv auto-host.h ../auto-build.h
1543 build_auto=auto-build.h
1545 AC_SUBST(build_subdir)
1547 tm_file="${tm_file} defaults.h"
1548 tm_p_file="${tm_p_file} tm-preds.h"
1549 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1550 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1551 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1552 # put this back in temporarily.
1553 xm_file="auto-host.h ansidecl.h ${xm_file}"
1560 # Compile in configure arguments.
1561 if test -f configargs.h ; then
1562 # Being re-configured.
1563 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1564 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1566 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1569 # Double all backslashes and backslash all quotes to turn
1570 # gcc_config_arguments into a C string.
1571 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1572 $gcc_config_arguments
1574 gcc_config_arguments_str=`cat conftest.out`
1577 cat > configargs.h <<EOF
1578 /* Generated automatically. */
1579 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1580 static const char thread_model[] = "$thread_file";
1582 static const struct {
1583 const char *name, *value;
1584 } configure_default_options[] = $configure_default_options;
1589 gcc_BASEVER=`cat $srcdir/BASE-VER`
1590 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1591 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1592 if test -f $srcdir/REVISION ; then
1593 gcc_REVISION=`cat $srcdir/REVISION`
1597 cat > plugin-version.h <<EOF
1598 #include "configargs.h"
1600 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1601 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1602 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1603 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1605 static char basever[] = "$gcc_BASEVER";
1606 static char datestamp[] = "$gcc_DATESTAMP";
1607 static char devphase[] = "$gcc_DEVPHASE";
1608 static char revision[] = "$gcc_REVISION";
1610 /* FIXME plugins: We should make the version information more precise.
1611 One way to do is to add a checksum. */
1613 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1615 configuration_arguments};
1619 # Internationalization
1620 ZW_GNU_GETTEXT_SISTER_DIR
1622 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1623 # -liconv on the link line twice.
1624 case "$LIBINTL" in *$LIBICONV*)
1628 AC_ARG_ENABLE(secureplt,
1629 [AS_HELP_STRING([--enable-secureplt],
1630 [enable -msecure-plt by default for PowerPC])],
1633 AC_ARG_ENABLE(leading-mingw64-underscores,
1634 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1635 [enable leading underscores on 64 bit mingw targets]),
1637 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1638 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1639 [Define if we should use leading underscore on 64 bit mingw targets])])
1642 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1645 AC_ARG_ENABLE(frame-pointer,
1646 [AS_HELP_STRING([--enable-frame-pointer],
1647 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1650 linux* | darwin[[8912]]*)
1651 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1653 enable_frame_pointer=no
1656 enable_frame_pointer=yes
1661 # Windows32 Registry support for specifying GCC installation paths.
1662 AC_ARG_ENABLE(win32-registry,
1663 [AS_HELP_STRING([--disable-win32-registry],
1664 [disable lookup of installation paths in the
1665 Registry on Windows hosts])
1666 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1667 AS_HELP_STRING([--enable-win32-registry=KEY],
1668 [use KEY instead of GCC version as the last portion
1669 of the registry key])],,)
1672 win32 | pe | cygwin* | mingw32* | uwin*)
1673 if test "x$enable_win32_registry" != xno; then
1674 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1677 if test "x$enable_win32_registry" != xno; then
1678 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1679 [Define to 1 if installation paths should be looked up in the Windows
1680 Registry. Ignored on non-Windows hosts.])
1682 if test "x$enable_win32_registry" != xyes \
1683 && test "x$enable_win32_registry" != x; then
1684 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1685 [Define to be the last component of the Windows registry key under which
1686 to look for installation paths. The full key used will be
1687 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1688 The default is the GCC version number.])
1694 # Get an absolute path to the GCC top-level source directory
1695 holddir=`${PWDCMD-pwd}`
1697 topdir=`${PWDCMD-pwd}`
1700 # Conditionalize the makefile for this host machine.
1702 for f in ${host_xmake_file}
1704 if test -f ${srcdir}/config/$f
1706 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1710 # Conditionalize the makefile for this target machine.
1712 for f in ${tmake_file}
1714 if test -f ${srcdir}/config/$f
1716 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1719 tmake_file="${tmake_file_}"
1721 out_object_file=`basename $out_file .c`.o
1722 common_out_object_file=`basename $common_out_file .c`.o
1724 tm_file_list="options.h"
1725 tm_include_list="options.h insn-constants.h"
1726 for f in $tm_file; do
1729 f=`echo $f | sed 's/^..//'`
1730 tm_file_list="${tm_file_list} $f"
1731 tm_include_list="${tm_include_list} $f"
1734 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1735 tm_include_list="${tm_include_list} $f"
1738 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1739 tm_include_list="${tm_include_list} config/$f"
1746 for f in $tm_p_file; do
1749 tm_p_file_list="${tm_p_file_list} $f"
1750 tm_p_include_list="${tm_p_include_list} $f"
1753 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1754 tm_p_include_list="${tm_p_include_list} config/$f"
1760 for f in $xm_file; do
1763 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1764 xm_include_list="${xm_include_list} $f"
1767 xm_file_list="${xm_file_list} $f"
1768 xm_include_list="${xm_include_list} $f"
1771 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1772 xm_include_list="${xm_include_list} config/$f"
1778 host_xm_include_list=
1779 for f in $host_xm_file; do
1782 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1783 host_xm_include_list="${host_xm_include_list} $f"
1786 host_xm_file_list="${host_xm_file_list} $f"
1787 host_xm_include_list="${host_xm_include_list} $f"
1790 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1791 host_xm_include_list="${host_xm_include_list} config/$f"
1797 for f in $build_xm_file; do
1800 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1801 build_xm_include_list="${build_xm_include_list} $f"
1803 auto-build.h | auto-host.h )
1804 build_xm_file_list="${build_xm_file_list} $f"
1805 build_xm_include_list="${build_xm_include_list} $f"
1808 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1809 build_xm_include_list="${build_xm_include_list} config/$f"
1814 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1815 # cross-compiler which does not use the native headers and libraries.
1816 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1817 CROSS= AC_SUBST(CROSS)
1818 ALL=all.internal AC_SUBST(ALL)
1819 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1821 if test "x$with_build_sysroot" != x; then
1822 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1824 # This value is used, even on a native system, because
1825 # CROSS_SYSTEM_HEADER_DIR is just
1826 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1827 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1830 if test x$host != x$target
1832 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1834 SYSTEM_HEADER_DIR=$build_system_header_dir
1835 case "$host","$target" in
1836 # Darwin crosses can use the host system's libraries and headers,
1837 # because of the fat library support. Of course, it must be the
1838 # same version of Darwin on both sides. Allow the user to
1839 # just say --target=foo-darwin without a version number to mean
1840 # "the version on this system".
1841 *-*-darwin*,*-*-darwin*)
1842 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1843 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1844 if test $hostos = $targetos -o $targetos = darwin ; then
1846 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1851 i?86-*-*,x86_64-*-* \
1852 | powerpc*-*-*,powerpc64*-*-*)
1853 CROSS="$CROSS -DNATIVE_CROSS" ;;
1858 if test "x$with_headers" = x; then
1865 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1866 SYSTEM_HEADER_DIR=$build_system_header_dir
1869 # If this is a cross-compiler that does not
1870 # have its own set of headers then define
1873 # If this is using newlib, without having the headers available now,
1874 # then define inhibit_libc in LIBGCC2_CFLAGS.
1875 # This prevents libgcc2 from containing any code which requires libc
1877 : ${inhibit_libc=false}
1878 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1879 test x$with_newlib = xyes ; } &&
1880 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1883 AC_SUBST(inhibit_libc)
1885 # When building gcc with a cross-compiler, we need to adjust things so
1886 # that the generator programs are still built with the native compiler.
1887 # Also, we cannot run fixincludes.
1889 # These are the normal (build=host) settings:
1890 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1891 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1892 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1893 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1894 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1895 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1897 # And these apply if build != host, or we are generating coverage data
1898 if test x$build != x$host || test "x$coverage_flags" != x
1900 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1901 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
1902 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1905 # Expand extra_headers to include complete path.
1906 # This substitutes for lots of t-* files.
1908 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1909 for file in ${extra_headers} ; do
1910 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1913 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1914 if test x"$use_gcc_tgmath" = xyes
1915 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1918 # Define collect2 in Makefile.
1919 case $host_can_use_collect2 in
1921 *) collect2='collect2$(exeext)' ;;
1923 AC_SUBST([collect2])
1925 # Add a definition of USE_COLLECT2 if system wants one.
1926 case $use_collect2 in
1927 no) use_collect2= ;;
1930 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1931 xm_defines="${xm_defines} USE_COLLECT2"
1932 case $host_can_use_collect2 in
1934 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1940 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1941 [Define to the name of the LTO plugin DSO that must be
1942 passed to the linker's -plugin=LIB option.])
1944 # ---------------------------
1945 # Assembler & linker features
1946 # ---------------------------
1948 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1949 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1950 # However when ld-new is first executed from the build tree, libtool will
1951 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1952 # to the build tree. While doing this we need to use the previous-stage
1953 # linker, or we have an infinite loop. The presence of a shell script as
1954 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1955 # the gcc/collect-ld script. So we need to know how libtool works, or
1956 # exec-tool will fail.
1958 m4_defun([_LT_CONFIG_COMMANDS], [])
1961 AC_SUBST(enable_fast_install)
1963 # Identify the assembler which will work hand-in-glove with the newly
1964 # built GCC, so that we can examine its features. This is the assembler
1965 # which will be driven by the driver program.
1967 # If build != host, and we aren't building gas in-tree, we identify a
1968 # build->target assembler and hope that it will have the same features
1969 # as the host->target assembler we'll be using.
1970 gcc_cv_gas_major_version=
1971 gcc_cv_gas_minor_version=
1972 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1974 m4_pattern_allow([AS_FOR_TARGET])dnl
1975 AS_VAR_SET_IF(gcc_cv_as,, [
1976 if test -x "$DEFAULT_ASSEMBLER"; then
1977 gcc_cv_as="$DEFAULT_ASSEMBLER"
1978 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1979 && test -f ../gas/Makefile \
1980 && test x$build = x$host; then
1981 gcc_cv_as=../gas/as-new$build_exeext
1982 elif test -x as$build_exeext; then
1983 # Build using assembler in the current directory.
1984 gcc_cv_as=./as$build_exeext
1985 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1986 gcc_cv_as="$AS_FOR_TARGET"
1988 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1991 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1992 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1993 case "$ORIGINAL_AS_FOR_TARGET" in
1994 ./as | ./as$build_exeext) ;;
1995 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1998 AC_MSG_CHECKING(what assembler to use)
1999 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2000 # Single tree build which includes gas. We want to prefer it
2001 # over whatever linker top-level may have detected, since
2002 # we'll use what we're building after installation anyway.
2003 AC_MSG_RESULT(newly built gas)
2005 _gcc_COMPUTE_GAS_VERSION
2006 in_tree_gas_is_elf=no
2007 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2008 || (grep 'obj_format = multi' ../gas/Makefile \
2009 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2011 in_tree_gas_is_elf=yes
2014 AC_MSG_RESULT($gcc_cv_as)
2020 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2021 [case "${enableval}" in
2028 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2029 [case "${enableval}" in
2031 install_gold_as_default=yes
2034 if test x${default_ld} != x; then
2035 install_gold_as_default=yes
2041 AC_MSG_ERROR([invalid --enable-gold argument])
2044 [install_gold_as_default=no])
2046 # Identify the linker which will work hand-in-glove with the newly
2047 # built GCC, so that we can examine its features. This is the linker
2048 # which will be driven by the driver program.
2050 # If build != host, and we aren't building gas in-tree, we identify a
2051 # build->target linker and hope that it will have the same features
2052 # as the host->target linker we'll be using.
2053 gcc_cv_gld_major_version=
2054 gcc_cv_gld_minor_version=
2055 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2056 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2057 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2059 AS_VAR_SET_IF(gcc_cv_ld,, [
2060 if test -x "$DEFAULT_LINKER"; then
2061 gcc_cv_ld="$DEFAULT_LINKER"
2062 elif test $install_gold_as_default = yes \
2063 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2064 && test -f ../gold/Makefile \
2065 && test x$build = x$host; then
2066 gcc_cv_ld=../gold/ld-new$build_exeext
2067 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2068 && test -f ../ld/Makefile \
2069 && test x$build = x$host; then
2070 gcc_cv_ld=../ld/ld-new$build_exeext
2071 elif test -x collect-ld$build_exeext; then
2072 # Build using linker in the current directory.
2073 gcc_cv_ld=./collect-ld$build_exeext
2074 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2075 gcc_cv_ld="$LD_FOR_TARGET"
2077 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2080 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2081 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2082 # if the PLUGIN_LD is set ld-new, just have it as ld
2083 # as that is the installed named.
2084 if test x$PLUGIN_LD_SUFFIX = xld-new \
2085 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2088 AC_ARG_WITH(plugin-ld,
2089 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2090 [if test x"$withval" != x; then
2091 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2092 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2094 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2095 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2097 # Check to see if we are using gold instead of ld
2098 AC_MSG_CHECKING(whether we are using gold)
2100 if test x$gcc_cv_ld != x; then
2101 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2102 | grep "GNU gold" > /dev/null; then
2106 AC_MSG_RESULT($ld_is_gold)
2108 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2109 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2110 case "$ORIGINAL_LD_FOR_TARGET" in
2111 ./collect-ld | ./collect-ld$build_exeext) ;;
2112 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2115 AC_MSG_CHECKING(what linker to use)
2116 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2117 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2118 # Single tree build which includes ld. We want to prefer it
2119 # over whatever linker top-level may have detected, since
2120 # we'll use what we're building after installation anyway.
2121 AC_MSG_RESULT(newly built ld)
2123 in_tree_ld_is_elf=no
2124 if (grep 'EMUL = .*elf' ../ld/Makefile \
2125 || grep 'EMUL = .*linux' ../ld/Makefile \
2126 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2127 in_tree_ld_is_elf=yes
2128 elif test "$ld_is_gold" = yes; then
2129 in_tree_ld_is_elf=yes
2131 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
2134 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2135 if test x$gcc_cv_gld_version != x; then
2139 case $gcc_cv_gld_version in
2142 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2145 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2146 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2148 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2149 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2151 AC_MSG_RESULT($gcc_cv_ld)
2153 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2154 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2155 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2158 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2159 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2161 # Figure out what nm we will be using.
2162 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2163 AS_VAR_SET_IF(gcc_cv_nm,, [
2164 if test -f $gcc_cv_binutils_srcdir/configure.in \
2165 && test -f ../binutils/Makefile \
2166 && test x$build = x$host; then
2167 gcc_cv_nm=../binutils/nm-new$build_exeext
2168 elif test -x nm$build_exeext; then
2169 gcc_cv_nm=./nm$build_exeext
2170 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2171 gcc_cv_nm="$NM_FOR_TARGET"
2173 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2176 AC_MSG_CHECKING(what nm to use)
2177 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2178 # Single tree build which includes binutils.
2179 AC_MSG_RESULT(newly built nm)
2182 AC_MSG_RESULT($gcc_cv_nm)
2186 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2187 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2188 case "$ORIGINAL_NM_FOR_TARGET" in
2189 ./nm | ./nm$build_exeext) ;;
2190 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2194 # Figure out what objdump we will be using.
2195 AS_VAR_SET_IF(gcc_cv_objdump,, [
2196 if test -f $gcc_cv_binutils_srcdir/configure.in \
2197 && test -f ../binutils/Makefile \
2198 && test x$build = x$host; then
2199 # Single tree build which includes binutils.
2200 gcc_cv_objdump=../binutils/objdump$build_exeext
2201 elif test -x objdump$build_exeext; then
2202 gcc_cv_objdump=./objdump$build_exeext
2203 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2204 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2206 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2209 AC_MSG_CHECKING(what objdump to use)
2210 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2211 # Single tree build which includes binutils.
2212 AC_MSG_RESULT(newly built objdump)
2213 elif test x$gcc_cv_objdump = x; then
2214 AC_MSG_RESULT(not found)
2216 AC_MSG_RESULT($gcc_cv_objdump)
2219 # Figure out what readelf we will be using.
2220 AS_VAR_SET_IF(gcc_cv_readelf,, [
2221 if test -f $gcc_cv_binutils_srcdir/configure.in \
2222 && test -f ../binutils/Makefile \
2223 && test x$build = x$host; then
2224 # Single tree build which includes binutils.
2225 gcc_cv_readelf=../binutils/readelf$build_exeext
2226 elif test -x readelf$build_exeext; then
2227 gcc_cv_readelf=./readelf$build_exeext
2229 AC_PATH_PROG(gcc_cv_readelf, readelf)
2232 AC_MSG_CHECKING(what readelf to use)
2233 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2234 # Single tree build which includes binutils.
2235 AC_MSG_RESULT(newly built readelf)
2236 elif test x$gcc_cv_readelf = x; then
2237 AC_MSG_RESULT(not found)
2239 AC_MSG_RESULT($gcc_cv_readelf)
2242 # Figure out what assembler alignment features are present.
2243 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2247 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2248 [Define if your assembler supports .balign and .p2align.])])
2250 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2253 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2254 [Define if your assembler supports specifying the maximum number
2255 of bytes to skip when using the GAS .p2align command.])])
2257 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2260 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2261 [Define if your assembler supports .literal16.])])
2263 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2265 [conftest_label1: .word 0
2267 conftest_label2: .word 0
2269 [if test x$gcc_cv_nm != x; then
2270 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2271 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2272 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2274 else gcc_cv_as_subsection_m1=yes
2276 rm -f conftest.nm1 conftest.nm2
2278 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2279 [Define if your assembler supports .subsection and .subsection -1 starts
2280 emitting at the beginning of your section.])])
2282 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2285 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2287 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2289 [ .weakref foobar, barfnot],,
2290 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2292 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2295 .NSUBSPA $CODE$,COMDAT],,
2296 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2298 # .hidden needs to be supported in both the assembler and the linker,
2299 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2300 # This is irritatingly difficult to feature test for; we have to check the
2301 # date string after the version number. If we've got an in-tree
2302 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2304 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2305 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2309 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2310 # STV_HIDDEN, so disable .hidden support if so.
2312 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2313 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2314 cat > conftest.s <<EOF
2321 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2322 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2323 grep '\.hidden default' > /dev/null; then
2326 gcc_cv_as_hidden=yes
2329 # Assume bug is present if objdump is missing.
2334 gcc_cv_as_hidden=yes
2339 # Darwin as has some visibility support, though with a different syntax.
2340 gcc_cv_as_hidden=yes
2344 # gnu_indirect_function type is an extension proposed at
2345 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2346 # selection of function implementation
2347 AC_ARG_ENABLE(gnu-indirect-function,
2348 [AS_HELP_STRING([--enable-gnu-indirect-function],
2349 [enable the use of the @gnu_indirect_function to glibc systems])],
2350 [case $enable_gnu_indirect_function in
2352 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2353 Valid choices are 'yes' and 'no'.]) ;;
2355 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2357 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2358 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2359 [Define if your system supports gnu indirect functions.])
2363 if test $in_tree_ld != yes ; then
2364 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2365 if echo "$ld_ver" | grep GNU > /dev/null; then
2366 if test x"$ld_is_gold" = xyes; then
2367 # GNU gold --version looks like this:
2369 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2371 # We extract the binutils version which is more familiar and specific
2372 # than the gold version.
2373 ld_vers=`echo $ld_ver | sed -n \
2374 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2376 # GNU ld --version looks like this:
2378 # GNU ld (GNU Binutils) 2.21.51.20110225
2379 ld_vers=`echo $ld_ver | sed -n \
2380 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2382 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2383 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2384 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2385 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2389 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2392 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2393 # /usr/ccs/bin/ld has been configured.
2394 ld_ver=`$gcc_cv_ld -V 2>&1`
2395 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2396 ld_vers=`echo $ld_ver | sed -n \
2397 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2398 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2399 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2407 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2408 [[if test $in_tree_ld = yes ; then
2410 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2411 && test $in_tree_ld_is_elf = yes; then
2412 gcc_cv_ld_hidden=yes
2415 gcc_cv_ld_hidden=yes
2416 if test x"$ld_is_gold" = xyes; then
2418 elif echo "$ld_ver" | grep GNU > /dev/null; then
2420 mmix-knuth-mmixware)
2421 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2425 if test 0"$ld_date" -lt 20020404; then
2426 if test -n "$ld_date"; then
2427 # If there was date string, but was earlier than 2002-04-04, fail
2429 elif test -z "$ld_vers"; then
2430 # If there was no date string nor ld version number, something is wrong
2433 test -z "$ld_vers_patch" && ld_vers_patch=0
2434 if test "$ld_vers_major" -lt 2; then
2436 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2437 gcc_cv_ld_hidden="no"
2438 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2446 # Darwin ld has some visibility support.
2447 gcc_cv_ld_hidden=yes
2449 hppa64*-*-hpux* | ia64*-*-hpux*)
2450 gcc_cv_ld_hidden=yes
2452 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2453 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2454 # .symbolic was only added in Solaris 9 12/02.
2455 gcc_cv_ld_hidden=yes
2463 libgcc_visibility=no
2464 AC_SUBST(libgcc_visibility)
2465 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2466 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2467 libgcc_visibility=yes
2468 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2469 [Define if your assembler and linker support .hidden.])
2472 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2473 gcc_cv_ld_ro_rw_mix=unknown
2474 if test $in_tree_ld = yes ; then
2475 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2476 && test $in_tree_ld_is_elf = yes; then
2477 gcc_cv_ld_ro_rw_mix=read-write
2479 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2480 echo '.section myfoosect, "a"' > conftest1.s
2481 echo '.section myfoosect, "aw"' > conftest2.s
2482 echo '.byte 1' >> conftest2.s
2483 echo '.section myfoosect, "a"' > conftest3.s
2484 echo '.byte 0' >> conftest3.s
2485 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2486 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2487 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2488 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2489 conftest2.o conftest3.o > /dev/null 2>&1; then
2490 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2491 | sed -e '/myfoosect/!d' -e N`
2492 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2493 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2494 gcc_cv_ld_ro_rw_mix=read-only
2496 gcc_cv_ld_ro_rw_mix=read-write
2501 rm -f conftest.* conftest[123].*
2504 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2505 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2506 [Define if your linker links a mix of read-only
2507 and read-write sections into a read-write section.])
2509 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2511 gcc_AC_INITFINI_ARRAY
2513 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2514 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2522 [[# GAS versions before 2.11 do not support uleb128,
2523 # despite appearing to.
2524 # ??? There exists an elf-specific test that will crash
2525 # the assembler. Perhaps it's better to figure out whether
2526 # arbitrary sections are supported and try the test.
2527 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2528 if echo "$as_ver" | grep GNU > /dev/null; then
2529 as_vers=`echo $as_ver | sed -n \
2530 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2531 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2532 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2533 if test $as_major -eq 2 && test $as_minor -lt 11
2535 else gcc_cv_as_leb128=yes
2538 [AC_DEFINE(HAVE_AS_LEB128, 1,
2539 [Define if your assembler supports .sleb128 and .uleb128.])])
2541 # Check if we have assembler support for unwind directives.
2542 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2549 .cfi_escape 1, 2, 3, 4, 5
2553 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2554 # read-only and read-write sections, we need to make sure that the
2555 # assembler used emits read-write .eh_frame sections.
2556 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2557 if test "x$gcc_cv_objdump" != x; then
2558 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2559 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2560 gcc_cv_as_cfi_directive=no
2563 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2564 # On Solaris/x86, make sure that GCC and gas agree on using
2565 # read-only .eh_frame sections for 64-bit.
2566 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2567 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2568 sed -e /.eh_frame/!d -e N | \
2569 grep READONLY > /dev/null; then
2570 gcc_cv_as_cfi_directive=yes
2572 gcc_cv_as_cfi_directive=no
2576 gcc_cv_as_cfi_directive=yes
2581 # no objdump, err on the side of caution
2582 gcc_cv_as_cfi_directive=no
2585 gcc_cv_as_cfi_directive=yes
2589 gcc_cv_as_cfi_directive=yes
2592 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2593 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2597 .cfi_adjust_cfa_offset 64
2599 .cfi_adjust_cfa_offset 128
2602 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2603 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2604 gcc_cv_as_cfi_advance_working=yes
2608 # no objdump, err on the side of caution
2609 gcc_cv_as_cfi_advance_working=no
2611 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2612 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2613 [`if test $gcc_cv_as_cfi_directive = yes \
2614 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2615 [Define 0/1 if your assembler supports CFI directives.])
2617 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2618 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2619 gcc_cv_as_cfi_personality_directive, ,,
2622 .cfi_personality 0, symbol
2624 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2625 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2626 then echo 1; else echo 0; fi`],
2627 [Define 0/1 if your assembler supports .cfi_personality.])
2629 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2630 gcc_cv_as_cfi_sections_directive, ,,
2632 .cfi_sections .debug_frame, .eh_frame
2636 win32 | pe | cygwin* | mingw32* | uwin*)
2637 # Need to check that we generated the correct relocation for the
2638 # .debug_frame section. This was fixed for binutils 2.21.
2639 gcc_cv_as_cfi_sections_directive=no
2640 if test "x$gcc_cv_objdump" != x; then
2641 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2642 grep secrel > /dev/null; then
2643 gcc_cv_as_cfi_sections_directive=yes
2648 gcc_cv_as_cfi_sections_directive=yes
2651 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2652 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2653 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2654 then echo 1; else echo 0; fi`],
2655 [Define 0/1 if your assembler supports .cfi_sections.])
2657 # GAS versions up to and including 2.11.0 may mis-optimize
2659 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2667 .section .eh_frame,"aw",@progbits
2669 .4byte .LECIE1-.LSCIE1
2683 .4byte .LEFDE1-.LASFDE1
2685 .4byte .LASFDE1-__FRAME_BEGIN__
2693 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2694 cat > conftest.lit <<EOF
2695 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2696 0010 01000000 12000000 18000000 00000000 ................
2697 0020 08000000 04080000 0044 .........D @&t@
2699 cat > conftest.big <<EOF
2700 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2701 0010 00000001 00000012 00000018 00000000 ................
2702 0020 00000008 04000000 0844 .........D @&t@
2704 # If the assembler didn't choke, and we can objdump,
2705 # and we got the correct data, then succeed.
2706 # The text in the here-document typically retains its unix-style line
2707 # endings, while the output of objdump will use host line endings.
2708 # Therefore, use diff -b for the comparisons.
2709 if test x$gcc_cv_objdump != x \
2710 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2711 | tail -3 > conftest.got \
2712 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2713 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2715 gcc_cv_as_eh_frame=yes
2716 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2717 gcc_cv_as_eh_frame=buggy
2719 # Uh oh, what do we do now?
2720 gcc_cv_as_eh_frame=no
2723 if test $gcc_cv_as_eh_frame = buggy; then
2724 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2725 [Define if your assembler mis-optimizes .eh_frame data.])
2728 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2729 [elf,2,12,0], [--fatal-warnings],
2730 [.section .rodata.str, "aMS", @progbits, 1])
2731 if test $gcc_cv_as_shf_merge = no; then
2732 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2733 [elf,2,12,0], [--fatal-warnings],
2734 [.section .rodata.str, "aMS", %progbits, 1])
2736 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2737 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2738 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2740 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2741 gcc_cv_as_comdat_group,
2742 [elf,2,16,0], [--fatal-warnings],
2743 [.section .text,"axG",@progbits,.foo,comdat])
2744 if test $gcc_cv_as_comdat_group = yes; then
2745 gcc_cv_as_comdat_group_percent=no
2746 gcc_cv_as_comdat_group_group=no
2748 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2749 gcc_cv_as_comdat_group_percent,
2750 [elf,2,16,0], [--fatal-warnings],
2751 [.section .text,"axG",%progbits,.foo,comdat])
2752 if test $gcc_cv_as_comdat_group_percent = yes; then
2753 gcc_cv_as_comdat_group_group=no
2755 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2756 gcc_cv_as_comdat_group_group=no
2759 # Sun as uses a completely different syntax.
2764 .group foo,".text%foo",#comdat
2765 .section ".text%foo", #alloc,#execinstr,#progbits
2770 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2772 .group foo,.text%foo,#comdat
2773 .section .text%foo, "ax", @progbits
2779 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2780 gcc_cv_as_comdat_group_group,
2786 if test x"$ld_is_gold" = xyes; then
2788 elif test $in_tree_ld = yes ; then
2790 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2791 && test $in_tree_ld_is_elf = yes; then
2794 elif echo "$ld_ver" | grep GNU > /dev/null; then
2796 if test 0"$ld_date" -lt 20050308; then
2797 if test -n "$ld_date"; then
2798 # If there was date string, but was earlier than 2005-03-08, fail
2800 elif test "$ld_vers_major" -lt 2; then
2802 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2809 *-*-solaris2.1[1-9]*)
2811 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2812 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2815 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2816 # least ld version 1.2267.
2817 if test "$ld_vers_major" -gt 1; then
2819 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2821 elif test "$ld_vers_minor" -ge 2267; then
2826 # Assume linkers other than GNU ld don't support COMDAT group.
2832 # Allow overriding the automatic COMDAT group tests above.
2833 AC_ARG_ENABLE(comdat,
2834 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2835 [comdat_group="$enable_comdat"])
2836 if test $comdat_group = no; then
2837 gcc_cv_as_comdat_group=no
2838 gcc_cv_as_comdat_group_percent=no
2839 gcc_cv_as_comdat_group_group=no
2841 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2842 [`if test $gcc_cv_as_comdat_group = yes \
2843 || test $gcc_cv_as_comdat_group_percent = yes \
2844 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2845 [Define 0/1 if your assembler and linker support COMDAT groups.])
2847 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2848 gcc_cv_as_discriminator,
2852 .loc 1 1 0 discriminator 1],,
2853 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2854 [Define if your assembler supports the .loc discriminator sub-directive.])])
2856 # Thread-local storage - the check is heavily parameterized.
2865 .section ".tdata","awT",@progbits
2868 ldq $27,__tls_get_addr($29) !literal!1
2869 lda $16,foo($29) !tlsgd!1
2870 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2871 ldq $27,__tls_get_addr($29) !literal!2
2872 lda $16,foo($29) !tlsldm!2
2873 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2874 ldq $1,foo($29) !gotdtprel
2875 ldah $2,foo($29) !dtprelhi
2876 lda $3,foo($2) !dtprello
2877 lda $4,foo($29) !dtprel
2878 ldq $1,foo($29) !gottprel
2879 ldah $2,foo($29) !tprelhi
2880 lda $3,foo($2) !tprello
2881 lda $4,foo($29) !tprel'
2884 tls_as_opt=--fatal-warnings
2886 cris-*-*|crisv32-*-*)
2888 .section ".tdata","awT",@progbits
2895 tls_as_opt=--fatal-warnings
2899 .section ".tdata","awT",@progbits
2911 .section ".tdata","awT",@progbits
2915 addil LT%foo-$tls_gdidx$,gp
2916 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2919 addil LT%foo-$tls_ldidx$,gp
2921 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2922 addil LR%foo-$tls_dtpoff$,%ret0
2923 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2925 addil LT%foo-$tls_ieoff$,gp
2926 ldw RT%foo-$tls_ieoff$(%r1),%t2
2929 addil LR%foo-$tls_leoff$,%t1
2930 ldo RR%foo-$tls_leoff$(%r1),%t2'
2933 tls_as_opt=--fatal-warnings
2937 .section ".tdata","awT",%progbits
2948 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2950 i[34567]86-*-solaris2.*)
2952 tga_func=___tls_get_addr
2954 x86_64-*-solaris2.1[0-9]*)
2956 tga_func=__tls_get_addr
2962 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2964 .section .tdata,"awt",@progbits'
2968 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2969 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2973 .section ".tdata","awT",@progbits'
2976 tls_as_opt="--fatal-warnings"
2978 conftest_s="$conftest_s
2982 leal foo@tlsgd(,%ebx,1), %eax
2983 leal foo@tlsldm(%ebx), %eax
2984 leal foo@dtpoff(%eax), %edx
2985 movl foo@gottpoff(%ebx), %eax
2986 subl foo@gottpoff(%ebx), %eax
2987 addl foo@gotntpoff(%ebx), %eax
2988 movl foo@indntpoff, %eax
2989 movl \$foo@tpoff, %eax
2990 subl \$foo@tpoff, %eax
2991 leal foo@ntpoff(%ecx), %eax"
2995 .section ".tdata","awT",@progbits
2999 leaq foo@TLSGD(%rip), %rdi
3000 leaq foo@TLSLD(%rip), %rdi
3001 leaq foo@DTPOFF(%rax), %rdx
3002 movq foo@GOTTPOFF(%rip), %rax
3003 movq $foo@TPOFF, %rax'
3006 tls_as_opt=--fatal-warnings
3010 .section ".tdata","awT",@progbits
3013 addl r16 = @ltoff(@dtpmod(foo#)), gp
3014 addl r17 = @ltoff(@dtprel(foo#)), gp
3015 addl r18 = @ltoff(@tprel(foo#)), gp
3016 addl r19 = @dtprel(foo#), gp
3017 adds r21 = @dtprel(foo#), r13
3018 movl r23 = @dtprel(foo#)
3019 addl r20 = @tprel(foo#), gp
3020 adds r22 = @tprel(foo#), r13
3021 movl r24 = @tprel(foo#)'
3024 tls_as_opt=--fatal-warnings
3028 .section .tdata,"awT",@progbits
3032 addik r5,r20,x@TLSGD
3033 addik r5,r20,x@TLSLDM'
3036 tls_as_opt='--fatal-warnings'
3040 .section .tdata,"awT",@progbits
3044 addiu $4, $28, %tlsgd(x)
3045 addiu $4, $28, %tlsldm(x)
3046 lui $4, %dtprel_hi(x)
3047 addiu $4, $4, %dtprel_lo(x)
3048 lw $4, %gottprel(x)($28)
3049 lui $4, %tprel_hi(x)
3050 addiu $4, $4, %tprel_lo(x)'
3053 tls_as_opt='-32 --fatal-warnings'
3057 .section .tdata,"awT",@progbits
3062 move.l x@TLSGD(%a5),%a0
3063 move.l x@TLSLDM(%a5),%a0
3064 move.l x@TLSLDO(%a5),%a0
3065 move.l x@TLSIE(%a5),%a0
3066 move.l x@TLSLE(%a5),%a0'
3069 tls_as_opt='--fatal-warnings'
3073 .section ".tdata","awT",%progbits
3077 add x0, x0, #:tlsgd_lo12:x
3082 tls_as_opt='--fatal-warnings'
3086 .extern __get_tpointer
3104 .section ".tdata","awT",@progbits
3112 addi 3,2,ld0@got@tlsgd
3118 addi 3,2,x1@got@tlsld
3124 addis 9,3,x2@dtprel@ha
3125 addi 9,9,x2@dtprel@l
3128 ld 9,x3@got@dtprel(2)
3134 tls_as_opt="-a64 --fatal-warnings"
3138 .section ".tdata","awT",@progbits
3146 addi 3,31,ld0@got@tlsgd
3148 addi 3,31,x1@got@tlsld
3151 addis 9,3,x2@dtprel@ha
3152 addi 9,9,x2@dtprel@l
3153 lwz 9,x3@got@tprel(31)
3156 addis 9,2,x2@tprel@ha
3157 addi 9,9,x2@tprel@l'
3160 tls_as_opt="-a32 --fatal-warnings"
3164 .section ".tdata","awT",@progbits
3173 l %r1,foo@GOTNTPOFF(%r12)
3174 l %r1,0(%r1):tls_load:foo
3175 bas %r14,0(%r1,%r13):tls_gdcall:foo
3176 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3179 tls_as_opt="-m31 --fatal-warnings"
3183 .section ".tdata","awT",@progbits
3191 lg %r1,foo@GOTNTPOFF(%r12)
3192 larl %r1,foo@INDNTPOFF
3193 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3194 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3197 tls_as_opt="-m64 -Aesame --fatal-warnings"
3199 sh-*-* | sh[34]-*-*)
3201 .section ".tdata","awT",@progbits
3211 tls_as_opt=--fatal-warnings
3215 sparc*-sun-solaris2.*)
3217 tga_func=__tls_get_addr
3223 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3225 .section ".tdata",#alloc,#write,#tls'
3230 .section ".tdata","awT",@progbits'
3233 tls_as_opt="-32 --fatal-warnings"
3235 conftest_s="$conftest_s
3238 sethi %tgd_hi22(foo), %o0
3239 add %o0, %tgd_lo10(foo), %o1
3240 add %l7, %o1, %o0, %tgd_add(foo)
3241 call __tls_get_addr, %tgd_call(foo)
3242 sethi %tldm_hi22(foo), %l1
3243 add %l1, %tldm_lo10(foo), %l2
3244 add %l7, %l2, %o0, %tldm_add(foo)
3245 call __tls_get_addr, %tldm_call(foo)
3246 sethi %tldo_hix22(foo), %l3
3247 xor %l3, %tldo_lox10(foo), %l4
3248 add %o0, %l4, %l5, %tldo_add(foo)
3249 sethi %tie_hi22(foo), %o3
3250 add %o3, %tie_lo10(foo), %o3
3251 ld [%l7 + %o3], %o2, %tie_ld(foo)
3252 add %g7, %o2, %o4, %tie_add(foo)
3253 sethi %tle_hix22(foo), %l1
3254 xor %l1, %tle_lox10(foo), %o5
3255 ld [%g7 + %o5], %o1"
3259 .section ".tdata","awT",@progbits
3262 addli r0, zero, tls_gd(foo)
3263 auli r0, zero, tls_gd_ha16(foo)
3264 addli r0, r0, tls_gd_lo16(foo)
3266 addli r0, zero, tls_ie(foo)
3267 auli r0, r0, tls_ie_ha16(foo)
3268 addli r0, r0, tls_ie_lo16(foo)'
3271 tls_as_opt="--fatal-warnings"
3275 .section ".tdata","awT",@progbits
3278 shl16insli r0, zero, hw0_last_tls_gd(foo)
3279 shl16insli r0, zero, hw1_last_tls_gd(foo)
3280 shl16insli r0, r0, hw0_tls_gd(foo)
3282 shl16insli r0, zero, hw1_last_tls_ie(foo)
3283 shl16insli r0, r0, hw0_tls_ie(foo)'
3286 tls_as_opt="--fatal-warnings"
3290 .section ".tdata","awT",@progbits
3293 movi a8, foo@TLSFUNC
3294 movi a10, foo@TLSARG
3295 callx8.tls a8, foo@TLSCALL'
3302 if test "x$enable_tls" = xno ; then
3303 : # TLS explicitly disabled.
3304 elif test "x$enable_tls" = xyes ; then
3305 set_have_as_tls=yes # TLS explicitly enabled.
3306 elif test -z "$tls_first_major"; then
3307 : # If we don't have a check, assume no support.
3309 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3310 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3311 [set_have_as_tls=yes])
3314 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3315 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3316 # Sun style that Sun ld and GCC don't support any longer.
3318 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3320 # Check ld and ld.so.1 TLS support.
3321 if echo "$ld_ver" | grep GNU > /dev/null; then
3322 # Assume all interesting versions of GNU ld have TLS support.
3323 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3327 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3329 min_tls_ld_vers_minor=374
3331 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3332 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3333 min_tls_ld_vers_minor=343
3336 if test "$ld_vers_major" -gt 1 || \
3337 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3343 AC_MSG_RESULT($ld_tls_support)
3346 save_LDFLAGS="$LDFLAGS"
3350 AC_MSG_CHECKING(library containing $tga_func)
3351 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3352 # (32-bit x86) only lived in libthread, so check for that. Keep
3353 # set_have_as_tls if found, disable if not.
3354 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3355 # Clear LIBS if we cannot support TLS.
3356 if test $set_have_as_tls = no; then
3359 # Always define LIB_TLS_SPEC, even without TLS support.
3360 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3361 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3362 AC_MSG_RESULT($LIBS)
3365 LDFLAGS="$save_LDFLAGS"
3368 if test $set_have_as_tls = yes ; then
3369 AC_DEFINE(HAVE_AS_TLS, 1,
3370 [Define if your assembler and linker support thread-local storage.])
3373 # Target-specific assembler checks.
3375 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3376 gcc_cv_ld_static_dynamic=no
3377 gcc_cv_ld_static_option='-Bstatic'
3378 gcc_cv_ld_dynamic_option='-Bdynamic'
3379 if test $in_tree_ld = yes ; then
3380 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3381 gcc_cv_ld_static_dynamic=yes
3383 elif test x$gcc_cv_ld != x; then
3384 # Check if linker supports -Bstatic/-Bdynamic option
3385 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3386 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3387 gcc_cv_ld_static_dynamic=yes
3390 # AIX ld uses -b flags
3391 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3392 gcc_cv_ld_static_dynamic=yes
3393 gcc_cv_ld_static_option="-bstatic"
3394 gcc_cv_ld_dynamic_option="-bdynamic"
3396 # HP-UX ld uses -a flags to select between shared and archive.
3398 if test x"$gnu_ld" = xno; then
3399 gcc_cv_ld_static_dynamic=yes
3400 gcc_cv_ld_static_option="-aarchive_shared"
3401 gcc_cv_ld_dynamic_option="-adefault"
3404 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3406 gcc_cv_ld_static_dynamic=yes
3411 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3412 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3413 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3414 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3415 [Define to the linker option to disable use of shared objects.])
3416 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3417 [Define to the linker option to enable use of shared objects.])
3419 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3421 if test x"$demangler_in_ld" = xyes; then
3422 AC_MSG_CHECKING(linker --demangle support)
3423 gcc_cv_ld_demangle=no
3424 if test $in_tree_ld = yes; then
3425 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3426 gcc_cv_ld_demangle=yes
3428 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3429 # Check if the GNU linker supports --demangle option
3430 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3431 gcc_cv_ld_demangle=yes
3434 if test x"$gcc_cv_ld_demangle" = xyes; then
3435 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3436 [Define if your linker supports --demangle option.])
3438 AC_MSG_RESULT($gcc_cv_ld_demangle)
3441 AC_MSG_CHECKING(linker plugin support)
3443 if test -f liblto_plugin.la; then
3444 save_ld_ver="$ld_ver"
3445 save_ld_vers_major="$ld_vers_major"
3446 save_ld_vers_minor="$ld_vers_minor"
3447 save_ld_is_gold="$ld_is_gold"
3451 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3453 # FIXME: ld_is_gold?
3454 ld_vers_major="$gcc_cv_gld_major_version"
3455 ld_vers_minor="$gcc_cv_gld_minor_version"
3457 # Determine plugin linker version.
3458 # FIXME: Partial duplicate from above, generalize.
3460 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3461 if echo "$ld_ver" | grep GNU > /dev/null; then
3462 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3464 ld_vers=`echo $ld_ver | sed -n \
3465 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3467 ld_vers=`echo $ld_ver | sed -n \
3468 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3470 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3471 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3476 # Determine plugin support.
3477 if echo "$ld_ver" | grep GNU > /dev/null; then
3478 # Require GNU ld or gold 2.21+ for plugin support by default.
3479 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3481 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3482 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3487 ld_ver="$save_ld_ver"
3488 ld_vers_major="$save_ld_vers_major"
3489 ld_vers_minor="$save_ld_vers_minor"
3490 ld_is_gold="$save_ld_is_gold"
3492 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3493 [Define to the level of your linker's plugin support.])
3494 AC_MSG_RESULT($gcc_cv_lto_plugin)
3498 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3499 [-mabi=lp64], [.text],,,)
3500 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3501 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3502 [Define if your assembler supports the -mabi option.])
3504 if test x$with_abi = xilp32; then
3505 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3506 Upgrade the Assembler.])
3508 if test x"$with_multilib_list" = xdefault; then
3509 TM_MULTILIB_CONFIG=lp64
3511 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3512 for aarch64_multilib in ${aarch64_multilibs}; do
3513 case ${aarch64_multilib} in
3515 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3516 Upgrade the Assembler.])
3526 # All TARGET_ABI_OSF targets.
3527 alpha*-*-linux* | alpha*-*-*bsd*)
3528 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3529 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3532 extbl $3, $2, $3 !lituse_bytoff!1
3533 ldq $2, a($29) !literal!1
3534 ldq $4, b($29) !literal!2
3535 ldq_u $3, 0($2) !lituse_base!1
3536 ldq $27, f($29) !literal!5
3537 jsr $26, ($27), f !lituse_jsr!5
3538 ldah $29, 0($26) !gpdisp!3
3539 lda $0, c($29) !gprel
3540 ldah $1, d($29) !gprelhigh
3541 lda $1, d($1) !gprellow
3542 lda $29, 0($29) !gpdisp!3],,
3543 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3544 [Define if your assembler supports explicit relocations.])])
3545 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3546 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3549 ldq $27, a($29) !literal!1
3550 jsr $26, ($27), a !lituse_jsrdirect!1],,
3551 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3552 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3556 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3557 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3558 [-no-mul-bug-abort], [.text],,
3559 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3560 [Define if your assembler supports the -no-mul-bug-abort option.])])
3564 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3565 [.register %g2, #scratch],,
3566 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3567 [Define if your assembler supports .register.])])
3569 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3570 [.section "nobits",#alloc,#write,#nobits
3571 .section "progbits",#alloc,#write,#progbits])
3572 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3573 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3574 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3576 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3578 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3579 [Define if your assembler supports -relax option.])])
3581 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3582 gcc_cv_as_sparc_gotdata_op,,
3589 sethi %gdop_hix22(foo), %g1
3590 xor %g1, %gdop_lox10(foo), %g1
3591 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3592 [if test x$gcc_cv_ld != x \
3593 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3594 if test x$gcc_cv_objdump != x; then
3595 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3596 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3597 gcc_cv_as_sparc_gotdata_op=no
3599 gcc_cv_as_sparc_gotdata_op=yes
3604 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3605 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3607 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3608 gcc_cv_as_sparc_ua_pcrel,,
3616 .uaword %r_disp32(foo)],
3617 [if test x$gcc_cv_ld != x \
3618 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3619 gcc_cv_as_sparc_ua_pcrel=yes
3622 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3623 [Define if your assembler and linker support unaligned PC relative relocs.])
3625 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3626 gcc_cv_as_sparc_ua_pcrel_hidden,,
3631 .uaword %r_disp32(foo)
3632 .byte 0x32, 0x33, 0x34
3637 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3638 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3639 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3640 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3641 if $gcc_cv_objdump -R conftest 2> /dev/null \
3642 | grep 'DISP32' > /dev/null 2>&1; then
3645 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3649 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3650 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3651 ]) # unaligned pcrel relocs
3653 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3654 gcc_cv_as_sparc_offsetable_lo10,,
3657 or %g1, %lo(ab) + 12, %g1
3658 or %g1, %lo(ab + 12), %g1],
3659 [if test x$gcc_cv_objdump != x \
3660 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3661 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3662 gcc_cv_as_sparc_offsetable_lo10=yes
3664 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3665 [Define if your assembler supports offsetable %lo().])])
3667 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3668 gcc_cv_as_sparc_fmaf,,
3671 .register %g2, #scratch
3672 .register %g3, #scratch
3674 fmaddd %f0, %f2, %f4, %f6
3675 addxccc %g1, %g2, %g3
3676 fsrl32 %f2, %f4, %f8
3677 fnaddd %f10, %f12, %f14],,
3678 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3679 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3681 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3682 gcc_cv_as_sparc_sparc4,,
3685 .register %g2, #scratch
3686 .register %g3, #scratch
3689 1: cwbneg %g2, %g3, 1f
3692 aes_kexpand0 %f4, %f6, %f8
3693 des_round %f38, %f40, %f42, %f44
3694 camellia_f %f54, %f56, %f58, %f60
3695 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3696 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3697 [Define if your assembler supports SPARC4 instructions.])])
3699 gcc_GAS_CHECK_FEATURE([LEON instructions],
3700 gcc_cv_as_sparc_leon,,
3703 .register %g2, #scratch
3704 .register %g3, #scratch
3708 cas [[%g2]], %g3, %g1],,
3709 [AC_DEFINE(HAVE_AS_LEON, 1,
3710 [Define if your assembler supports LEON instructions.])])
3714 i[34567]86-*-* | x86_64-*-*)
3718 # Full C++ conformance when using a shared libstdc++-v3 requires some
3719 # support from the Cygwin DLL, which in more recent versions exports
3720 # wrappers to aid in interposing and redirecting operators new, delete,
3721 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3722 # are configuring for a version of Cygwin that exports the wrappers.
3723 if test x$host = x$target && test x$host_cpu = xi686; then
3724 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3726 # Can't check presence of libc functions during cross-compile, so
3727 # we just have to assume we're building for an up-to-date target.
3728 gcc_ac_cygwin_dll_wrappers=yes
3730 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3731 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3732 [Define if you want to generate code by default that assumes that the
3733 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3736 cygwin* | pe | mingw32* | interix*)
3737 # Recent binutils allows the three-operand form of ".comm" on PE. This
3738 # definition is used unconditionally to initialise the default state of
3739 # the target option variable that governs usage of the feature.
3740 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3741 [2,19,52],,[.comm foo,1,32])
3742 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3743 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3744 [Define if your assembler supports specifying the alignment
3745 of objects allocated using the GAS .comm command.])
3746 # Used for DWARF 2 in PE
3747 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3748 gcc_cv_as_ix86_pe_secrel32,
3754 [if test x$gcc_cv_ld != x \
3755 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3756 gcc_cv_as_ix86_pe_secrel32=yes
3759 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3760 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3761 # Test if the assembler supports the extended form of the .section
3762 # directive that specifies section alignment. LTO support uses this,
3763 # but normally only after installation, so we warn but don't fail the
3764 # configure if LTO is enabled but the assembler does not support it.
3765 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3766 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3767 if test x$gcc_cv_as_section_has_align != xyes; then
3768 case ",$enable_languages," in
3770 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3774 # Test if the assembler supports the section flag 'e' for specifying
3775 # an excluded section.
3776 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3780 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3781 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3782 [Define if your assembler supports specifying the section flag e.])
3786 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3787 gcc_cv_as_ix86_filds,,,
3788 [filds mem; fists mem],,
3789 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3790 [Define if your assembler uses filds and fists mnemonics.])])
3792 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3793 gcc_cv_as_ix86_fildq,,,
3794 [fildq mem; fistpq mem],,
3795 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3796 [Define if your assembler uses fildq and fistq mnemonics.])])
3798 gcc_GAS_CHECK_FEATURE([cmov syntax],
3799 gcc_cv_as_ix86_cmov_sun_syntax,,,
3800 [cmovl.l %edx, %eax],,
3801 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3802 [Define if your assembler supports the Sun syntax for cmov.])])
3804 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3805 gcc_cv_as_ix86_ffreep,,,
3807 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3808 [Define if your assembler supports the ffreep mnemonic.])])
3810 gcc_GAS_CHECK_FEATURE([.quad directive],
3811 gcc_cv_as_ix86_quad,,,
3813 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3814 [Define if your assembler supports the .quad directive.])])
3816 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3817 gcc_cv_as_ix86_sahf,,,
3820 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3821 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3823 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3824 gcc_cv_as_ix86_interunit_movq,,,
3828 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3829 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3830 [Define if your assembler supports interunit movq mnemonic.])
3832 gcc_GAS_CHECK_FEATURE([hle prefixes],
3833 gcc_cv_as_ix86_hle,,,
3834 [lock xacquire cmpxchg %esi, (%ecx)],,
3835 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3836 [Define if your assembler supports HLE prefixes.])])
3838 gcc_GAS_CHECK_FEATURE([swap suffix],
3839 gcc_cv_as_ix86_swap,,,
3840 [movl.s %esp, %ebp],,
3841 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3842 [Define if your assembler supports the swap suffix.])])
3844 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3845 gcc_cv_as_ix86_diff_sect_delta,,,
3853 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3854 [Define if your assembler supports the subtraction of symbols in different sections.])])
3856 # These two are used unconditionally by i386.[ch]; it is to be defined
3857 # to 1 if the feature is present, 0 otherwise.
3858 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3859 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3865 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3866 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3867 [Define true if the assembler supports '.long foo@GOTOFF'.])
3869 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3870 gcc_cv_as_ix86_rep_lock_prefix,,,
3876 lock addl %edi, (%eax,%esi)
3877 lock orl $0, (%esp)],,
3878 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3879 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3881 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3882 gcc_cv_as_ix86_tlsgdplt,,,
3883 [call tls_gd@tlsgdplt],
3884 [if test x$gcc_cv_ld != x \
3885 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3886 gcc_cv_as_ix86_tlsgdplt=yes
3889 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3890 [Define if your assembler and linker support @tlsgdplt.])])
3892 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3893 gcc_cv_as_ix86_tlsldmplt,,,
3895 call tls_ld@tlsldmplt],
3896 [if test x$gcc_cv_ld != x \
3897 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3898 gcc_cv_as_ix86_tlsldmplt=yes
3901 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3902 [Define if your assembler and linker support @tlsldmplt.])])
3907 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3908 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3910 addl r15 = @ltoffx(x#), gp
3912 ld8.mov r16 = [[r15]], x#],,
3913 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3914 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3920 *-*-aix*) conftest_s=' .machine "pwr5"
3924 gcc_GAS_CHECK_FEATURE([.machine directive support],
3925 gcc_cv_as_machine_directive,,,
3926 [ .machine ppc7400])
3927 if test x$gcc_cv_as_machine_directive != xyes; then
3928 echo "*** This target requires an assembler supporting \".machine\"" >&2
3929 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3930 test x$build = x$target && exit 1
3934 *) conftest_s=' .machine power4
3939 gcc_GAS_CHECK_FEATURE([mfcr field support],
3940 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3942 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3943 [Define if your assembler supports mfcr field.])])
3946 *-*-aix*) conftest_s=' .machine "pwr5"
3949 *) conftest_s=' .machine power5
3954 gcc_GAS_CHECK_FEATURE([popcntb support],
3955 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3957 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3958 [Define if your assembler supports popcntb field.])])
3961 *-*-aix*) conftest_s=' .machine "pwr5x"
3964 *) conftest_s=' .machine power5
3969 gcc_GAS_CHECK_FEATURE([fp round support],
3970 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3972 [AC_DEFINE(HAVE_AS_FPRND, 1,
3973 [Define if your assembler supports fprnd.])])
3976 *-*-aix*) conftest_s=' .machine "pwr6"
3979 *) conftest_s=' .machine power6
3984 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3985 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3987 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3988 [Define if your assembler supports mffgpr and mftgpr.])])
3991 *-*-aix*) conftest_s=' .csect .text[[PR]]
3993 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3997 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3998 *) conftest_s=' .text
4000 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4003 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4004 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4006 [AC_DEFINE(HAVE_AS_REL16, 1,
4007 [Define if your assembler supports R_PPC_REL16 relocs.])])
4010 *-*-aix*) conftest_s=' .machine "pwr6"
4013 *) conftest_s=' .machine power6
4018 gcc_GAS_CHECK_FEATURE([compare bytes support],
4019 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4021 [AC_DEFINE(HAVE_AS_CMPB, 1,
4022 [Define if your assembler supports cmpb.])])
4025 *-*-aix*) conftest_s=' .machine "pwr6"
4028 *) conftest_s=' .machine power6
4033 gcc_GAS_CHECK_FEATURE([decimal float support],
4034 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4036 [AC_DEFINE(HAVE_AS_DFP, 1,
4037 [Define if your assembler supports DFP instructions.])])
4040 *-*-aix*) conftest_s=' .machine "pwr7"
4043 *) conftest_s=' .machine power7
4048 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4049 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4051 [AC_DEFINE(HAVE_AS_VSX, 1,
4052 [Define if your assembler supports VSX instructions.])])
4055 *-*-aix*) conftest_s=' .machine "pwr7"
4058 *) conftest_s=' .machine power7
4063 gcc_GAS_CHECK_FEATURE([popcntd support],
4064 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4066 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4067 [Define if your assembler supports POPCNTD instructions.])])
4070 *-*-aix*) conftest_s=' .machine "pwr8"
4071 .csect .text[[PR]]';;
4072 *) conftest_s=' .machine power8
4076 gcc_GAS_CHECK_FEATURE([power8 support],
4077 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4079 [AC_DEFINE(HAVE_AS_POWER8, 1,
4080 [Define if your assembler supports POWER8 instructions.])])
4083 *-*-aix*) conftest_s=' .csect .text[[PR]]
4085 *) conftest_s=' .text
4089 gcc_GAS_CHECK_FEATURE([lwsync support],
4090 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4092 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4093 [Define if your assembler supports LWSYNC instructions.])])
4096 *-*-aix*) conftest_s=' .machine "476"
4099 *) conftest_s=' .machine "476"
4104 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4105 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4107 [AC_DEFINE(HAVE_AS_DCI, 1,
4108 [Define if your assembler supports the DCI/ICI instructions.])])
4110 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4111 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4112 [.gnu_attribute 4,1],,
4113 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4114 [Define if your assembler supports .gnu_attribute.])])
4116 gcc_GAS_CHECK_FEATURE([tls marker support],
4117 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4118 [ bl __tls_get_addr(x@tlsgd)],,
4119 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4120 [Define if your assembler supports arg info for __tls_get_addr.])])
4124 gcc_GAS_CHECK_FEATURE([.ref support],
4125 gcc_cv_as_aix_ref, [2,21,0],,
4126 [ .csect stuff[[rw]]
4132 [AC_DEFINE(HAVE_AS_REF, 1,
4133 [Define if your assembler supports .ref])])
4139 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4140 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4141 [ lw $4,%gp_rel(foo)($4)],,
4142 [if test x$target_cpu_default = x
4143 then target_cpu_default=MASK_EXPLICIT_RELOCS
4144 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4146 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4147 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4148 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4149 [Define if the assembler understands -mno-shared.])])
4151 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4152 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4153 [.gnu_attribute 4,1],,
4154 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4155 [Define if your assembler supports .gnu_attribute.])])
4157 gcc_GAS_CHECK_FEATURE([.micromips support],
4158 gcc_cv_as_micromips_support,,[--fatal-warnings],
4160 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4161 [Define if your assembler supports the .set micromips directive])])
4163 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4164 gcc_cv_as_mips_dtprelword, [2,18,0],,
4165 [.section .tdata,"awT",@progbits
4169 .dtprelword x+0x8000],,
4170 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4171 [Define if your assembler supports .dtprelword.])])
4173 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4174 gcc_cv_as_mips_dspr1_mult,,,
4184 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4185 [Define if your assembler supports DSPR1 mult.])])
4187 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4188 gcc_cv_as_ld_jalr_reloc=no
4189 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4190 if test $in_tree_ld = yes ; then
4191 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4192 && test $in_tree_ld_is_elf = yes; then
4193 gcc_cv_as_ld_jalr_reloc=yes
4195 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4196 echo ' .ent x' > conftest.s
4197 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4198 echo ' ld $25,%call16(y)($28)' >> conftest.s
4199 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4200 echo '1: jalr $25' >> conftest.s
4201 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4202 echo '1: jalr $25' >> conftest.s
4203 echo ' .end x' >> conftest.s
4204 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4205 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4206 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4207 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4208 gcc_cv_as_ld_jalr_reloc=yes
4214 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4215 if test x$target_cpu_default = x; then
4216 target_cpu_default=MASK_RELAX_PIC_CALLS
4218 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4221 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4223 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4224 [gcc_cv_ld_mips_personality_relaxation],
4225 [gcc_cv_ld_mips_personality_relaxation=no
4226 if test $in_tree_ld = yes ; then
4227 if test "$gcc_cv_gld_major_version" -eq 2 \
4228 -a "$gcc_cv_gld_minor_version" -ge 21 \
4229 -o "$gcc_cv_gld_major_version" -gt 2; then
4230 gcc_cv_ld_mips_personality_relaxation=yes
4232 elif test x$gcc_cv_as != x \
4233 -a x$gcc_cv_ld != x \
4234 -a x$gcc_cv_readelf != x ; then
4235 cat > conftest.s <<EOF
4237 .cfi_personality 0x80,indirect_ptr
4244 .section .data,"aw",@progbits
4248 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4249 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4250 if $gcc_cv_readelf -d conftest 2>&1 \
4251 | grep TEXTREL > /dev/null 2>&1; then
4253 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4254 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4257 gcc_cv_ld_mips_personality_relaxation=yes
4261 rm -f conftest.s conftest.o conftest])
4262 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4263 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4264 [Define if your linker can relax absolute .eh_frame personality
4265 pointers into PC-relative form.])
4268 gcc_GAS_CHECK_FEATURE([-mnan= support],
4269 gcc_cv_as_mips_nan,,
4271 [AC_DEFINE(HAVE_AS_NAN, 1,
4272 [Define if the assembler understands -mnan=.])])
4273 if test x$gcc_cv_as_mips_nan = xno \
4274 && test x$with_nan != x; then
4276 [Requesting --with-nan= requires assembler support for -mnan=])
4281 # Mips and HP-UX need the GNU assembler.
4282 # Linux on IA64 might be able to use the Intel assembler.
4285 mips*-*-* | *-*-hpux* )
4286 if test x$gas_flag = xyes \
4287 || test x"$host" != x"$build" \
4288 || test ! -x "$gcc_cv_as" \
4289 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4292 echo "*** This configuration requires the GNU assembler" >&2
4298 # ??? Not all targets support dwarf2 debug_line, even within a version
4299 # of gas. Moreover, we need to emit a valid instruction to trigger any
4300 # info to the output file. So, as supported targets are added to gas 2.11,
4301 # add some instruction here to (also) show we expect this might work.
4302 # ??? Once 2.11 is released, probably need to add first known working
4303 # version to the per-target configury.
4305 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4306 | mips | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 \
4317 if test x"$insn" != x; then
4319 .file 1 \"conftest.s\"
4322 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4323 gcc_cv_as_dwarf2_debug_line,
4324 [elf,2,11,0],, [$conftest_s],
4325 [if test x$gcc_cv_objdump != x \
4326 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4327 | grep debug_line > /dev/null 2>&1; then
4328 gcc_cv_as_dwarf2_debug_line=yes
4331 # The .debug_line file table must be in the exact order that
4332 # we specified the files, since these indices are also used
4333 # by DW_AT_decl_file. Approximate this test by testing if
4334 # the assembler bitches if the same index is assigned twice.
4335 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4336 gcc_cv_as_dwarf2_file_buggy,,,
4340 if test $gcc_cv_as_dwarf2_debug_line = yes \
4341 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4342 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4343 [Define if your assembler supports dwarf2 .file/.loc directives,
4344 and preserves file table indices exactly as given.])
4347 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4348 gcc_cv_as_gdwarf2_flag,
4349 [elf,2,11,0], [--gdwarf2], [$insn],,
4350 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4351 [Define if your assembler supports the --gdwarf2 option.])])
4353 gcc_GAS_CHECK_FEATURE([--gstabs option],
4354 gcc_cv_as_gstabs_flag,
4355 [elf,2,11,0], [--gstabs], [$insn],
4356 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4357 # and warns about it, but still exits successfully. So check for
4359 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4361 else gcc_cv_as_gstabs_flag=yes
4363 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4364 [Define if your assembler supports the --gstabs option.])])
4366 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4367 gcc_cv_as_debug_prefix_map_flag,
4368 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4369 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4370 [Define if your assembler supports the --debug-prefix-map option.])])
4373 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4376 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4377 [Define if your assembler supports .lcomm with an alignment field.])])
4379 if test x$with_sysroot = x && test x$host = x$target \
4380 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4381 && test "$prefix" != "NONE"; then
4382 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4383 [Define to PREFIX/include if cpp should also search that directory.])
4386 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4387 if test "x$with_headers" != x; then
4388 target_header_dir=$with_headers
4389 elif test "x$with_sysroot" = x; then
4390 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4391 elif test "x$with_build_sysroot" != "x"; then
4392 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4393 elif test "x$with_sysroot" = xyes; then
4394 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4396 target_header_dir="${with_sysroot}${native_system_header_dir}"
4399 target_header_dir=${native_system_header_dir}
4402 # Determine the version of glibc, if any, used on the target.
4403 AC_MSG_CHECKING([for target glibc version])
4404 AC_ARG_WITH([glibc-version],
4405 [AS_HELP_STRING([--with-glibc-version=M.N],
4406 [assume GCC used with glibc version M.N or later])], [
4407 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4408 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4409 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4411 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4413 glibc_version_major=0
4414 glibc_version_minor=0
4415 [if test -f $target_header_dir/features.h \
4416 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4417 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4418 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4419 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4421 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4423 AC_ARG_ENABLE(gnu-unique-object,
4424 [AS_HELP_STRING([--enable-gnu-unique-object],
4425 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4426 [case $enable_gnu_unique_object in
4428 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4429 Valid choices are 'yes' and 'no'.]) ;;
4431 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4433 [.type foo, '$target_type_format_char'gnu_unique_object],,
4434 # We need to unquote above to to use the definition from config.gcc.
4435 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4436 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4438 if test x$enable_gnu_unique_object = xyes; then
4439 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4440 [Define if your assembler supports @gnu_unique_object.])
4443 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4444 [gcc_cv_as_line_zero],
4445 [gcc_cv_as_line_zero=no
4446 if test $in_tree_gas = yes; then
4447 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4448 elif test "x$gcc_cv_as" != x; then
4449 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4450 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4451 test "x`cat conftest.out`" = x
4453 gcc_cv_as_line_zero=yes
4455 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4456 cat conftest.s >&AS_MESSAGE_LOG_FD
4457 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4458 cat conftest.out >&AS_MESSAGE_LOG_FD
4460 rm -f conftest.o conftest.s conftest.out
4462 if test "x$gcc_cv_as_line_zero" = xyes; then
4463 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4464 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4467 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4468 gcc_cv_ld_eh_frame_hdr=no
4469 if test $in_tree_ld = yes ; then
4470 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4471 && test $in_tree_ld_is_elf = yes; then
4472 gcc_cv_ld_eh_frame_hdr=yes
4474 elif test x$gcc_cv_ld != x; then
4475 if echo "$ld_ver" | grep GNU > /dev/null; then
4476 # Check if linker supports --eh-frame-hdr option
4477 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4478 gcc_cv_ld_eh_frame_hdr=yes
4483 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4484 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4485 gcc_cv_ld_eh_frame_hdr=yes
4491 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4492 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4493 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4494 [Define if your linker supports .eh_frame_hdr.])
4496 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4498 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4499 gcc_cv_ld_eh_frame_ciev3=no
4500 if test $in_tree_ld = yes ; then
4501 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4502 && test $in_tree_ld_is_elf = yes; then
4503 gcc_cv_ld_eh_frame_ciev3=yes
4505 elif test x$gcc_cv_ld != x; then
4506 if echo "$ld_ver" | grep GNU > /dev/null; then
4507 gcc_cv_ld_eh_frame_ciev3=yes
4508 if test 0"$ld_date" -lt 20040513; then
4509 if test -n "$ld_date"; then
4510 # If there was date string, but was earlier than 2004-05-13, fail
4511 gcc_cv_ld_eh_frame_ciev3=no
4512 elif test "$ld_vers_major" -lt 2; then
4513 gcc_cv_ld_eh_frame_ciev3=no
4514 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4515 gcc_cv_ld_eh_frame_ciev3=no
4521 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4522 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4523 gcc_cv_ld_eh_frame_ciev3=yes
4529 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4530 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4531 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4532 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4534 AC_MSG_CHECKING(linker position independent executable support)
4536 if test $in_tree_ld = yes ; then
4537 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4538 && test $in_tree_ld_is_elf = yes; then
4541 elif test x$gcc_cv_ld != x; then
4542 # Check if linker supports -pie option
4543 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4547 if test x"$gcc_cv_ld_pie" = xyes; then
4548 AC_DEFINE(HAVE_LD_PIE, 1,
4549 [Define if your linker supports -pie option.])
4551 AC_MSG_RESULT($gcc_cv_ld_pie)
4553 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4554 gcc_cv_ld_eh_gc_sections=no
4555 if test $in_tree_ld = yes ; then
4556 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4557 && test $in_tree_ld_is_elf = yes; then
4558 gcc_cv_ld_eh_gc_sections=yes
4560 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4561 cat > conftest.s <<EOF
4564 .type _start, @function
4567 .size _start, .-_start
4568 .section .text.foo,"ax",@progbits
4569 .type foo, @function
4573 .section .gcc_except_table.foo,"a",@progbits
4576 .section .eh_frame,"a",@progbits
4579 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4580 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4581 | grep "gc-sections option ignored" > /dev/null; then
4582 gcc_cv_ld_eh_gc_sections=no
4583 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4584 | grep gcc_except_table > /dev/null; then
4585 gcc_cv_ld_eh_gc_sections=yes
4586 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4587 if test x$gcc_cv_as_comdat_group != xyes; then
4588 gcc_cv_ld_eh_gc_sections=no
4589 cat > conftest.s <<EOF
4592 .type _start, @function
4595 .size _start, .-_start
4596 .section .gnu.linkonce.t.foo,"ax",@progbits
4597 .type foo, @function
4601 .section .gcc_except_table.foo,"a",@progbits
4604 .section .eh_frame,"a",@progbits
4607 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4608 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4609 | grep "gc-sections option ignored" > /dev/null; then
4610 gcc_cv_ld_eh_gc_sections=no
4611 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4612 | grep gcc_except_table > /dev/null; then
4613 gcc_cv_ld_eh_gc_sections=yes
4619 rm -f conftest.s conftest.o conftest
4623 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4624 gcc_cv_ld_eh_gc_sections=no
4627 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4628 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4629 [Define if your linker supports garbage collection of
4630 sections in presence of EH frames.])
4632 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4634 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4635 gcc_cv_ld_eh_gc_sections_bug=no
4636 if test $in_tree_ld = yes ; then
4637 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4638 && test $in_tree_ld_is_elf = yes; then
4639 gcc_cv_ld_eh_gc_sections_bug=yes
4641 elif test x$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
4642 gcc_cv_ld_eh_gc_sections_bug=yes
4643 cat > conftest.s <<EOF
4646 .type _start, @function
4649 .size _start, .-_start
4650 .section .text.startup.foo,"ax",@progbits
4651 .type foo, @function
4655 .section .gcc_except_table.foo,"a",@progbits
4658 .section .eh_frame,"a",@progbits
4661 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4662 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4663 | grep "gc-sections option ignored" > /dev/null; then
4665 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4666 | grep gcc_except_table > /dev/null; then
4667 gcc_cv_ld_eh_gc_sections_bug=no
4670 rm -f conftest.s conftest.o conftest
4672 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4673 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4674 [Define if your linker has buggy garbage collection of
4675 sections support when .text.startup.foo like sections are used.])
4677 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4683 AC_CACHE_CHECK(linker --as-needed support,
4684 gcc_cv_ld_as_needed,
4685 [gcc_cv_ld_as_needed=no
4686 gcc_cv_ld_as_needed_option='--as-needed'
4687 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4688 if test $in_tree_ld = yes ; then
4689 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4690 && test $in_tree_ld_is_elf = yes; then
4691 gcc_cv_ld_as_needed=yes
4693 elif test x$gcc_cv_ld != x; then
4694 # Check if linker supports --as-needed and --no-as-needed options
4695 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4696 gcc_cv_ld_as_needed=yes
4699 # Solaris 2 ld always supports -z ignore/-z record.
4701 gcc_cv_ld_as_needed=yes
4702 gcc_cv_ld_as_needed_option="-z ignore"
4703 gcc_cv_ld_no_as_needed_option="-z record"
4708 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4709 # dl_iterate_phdr, i.e. since Solaris 11.
4711 *-*-solaris2.1[[1-9]]*)
4713 i?86-*-* | x86_64-*-*)
4714 if echo "$ld_ver" | grep GNU > /dev/null; then
4715 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4716 gcc_cv_ld_as_needed=no
4722 gcc_cv_ld_as_needed=no
4726 if test x"$gcc_cv_ld_as_needed" = xyes; then
4727 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4728 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4729 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4730 [Define to the linker option to ignore unused dependencies.])
4731 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4732 [Define to the linker option to keep unused dependencies.])
4735 case "$target:$tm_file" in
4736 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4739 emul_name="-melf64lppc"
4742 emul_name="-melf64ppc"
4745 emul_name="-melf64ppc_fbsd"
4748 AC_CACHE_CHECK(linker support for omitting dot symbols,
4749 gcc_cv_ld_no_dot_syms,
4750 [gcc_cv_ld_no_dot_syms=no
4751 if test x"$ld_is_gold" = xyes; then
4752 gcc_cv_ld_no_dot_syms=yes
4753 elif test $in_tree_ld = yes ; then
4754 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4755 gcc_cv_ld_no_dot_syms=yes
4757 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4758 cat > conftest1.s <<EOF
4762 cat > conftest2.s <<EOF
4763 .section ".opd","aw"
4768 .quad .LEfoo,.TOC.@tocbase,0
4774 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4775 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4776 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4777 gcc_cv_ld_no_dot_syms=yes
4779 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4782 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4783 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4784 [Define if your PowerPC64 linker only needs function descriptor syms.])
4787 AC_CACHE_CHECK(linker large toc support,
4788 gcc_cv_ld_large_toc,
4789 [gcc_cv_ld_large_toc=no
4790 if test x"$ld_is_gold" = xyes; then
4791 gcc_cv_ld_large_toc=yes
4792 elif test $in_tree_ld = yes ; then
4793 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4794 gcc_cv_ld_large_toc=yes
4796 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4797 cat > conftest.s <<EOF
4798 .section ".tbss","awT",@nobits
4804 addis 9,13,ie0@got@tprel@ha
4805 ld 9,ie0@got@tprel@l(9)
4807 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4808 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4809 gcc_cv_ld_large_toc=yes
4811 rm -f conftest conftest.o conftest.s
4814 if test x"$gcc_cv_ld_large_toc" = xyes; then
4815 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4816 [Define if your PowerPC64 linker supports a large TOC.])
4823 AC_CACHE_CHECK(linker large toc support,
4824 gcc_cv_ld_large_toc,
4825 [gcc_cv_ld_large_toc=no
4826 if test x$gcc_cv_as != x ; then
4827 cat > conftest.s <<EOF
4837 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4838 gcc_cv_ld_large_toc=yes
4840 rm -f conftest conftest.o conftest.s
4843 if test x"$gcc_cv_ld_large_toc" = xyes; then
4844 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4845 [Define if your PowerPC64 linker supports a large TOC.])
4850 AC_CACHE_CHECK(linker --build-id support,
4852 [gcc_cv_ld_buildid=no
4853 if test $in_tree_ld = yes ; then
4854 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4855 "$gcc_cv_gld_minor_version" -ge 18 -o \
4856 "$gcc_cv_gld_major_version" -gt 2 \
4857 && test $in_tree_ld_is_elf = yes; then
4858 gcc_cv_ld_buildid=yes
4860 elif test x$gcc_cv_ld != x; then
4861 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4862 gcc_cv_ld_buildid=yes
4865 if test x"$gcc_cv_ld_buildid" = xyes; then
4866 AC_DEFINE(HAVE_LD_BUILDID, 1,
4867 [Define if your linker supports --build-id.])
4870 AC_ARG_ENABLE(linker-build-id,
4871 [AS_HELP_STRING([--enable-linker-build-id],
4872 [compiler will always pass --build-id to linker])],
4874 enable_linker_build_id=no)
4876 if test x"$enable_linker_build_id" = xyes; then
4877 if test x"$gcc_cv_ld_buildid" = xyes; then
4878 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4879 [Define if gcc should always pass --build-id to linker.])
4881 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4885 # In binutils 2.21, GNU ld gained support for new emulations fully
4886 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4887 AC_CACHE_CHECK(linker *_sol2 emulation support,
4888 gcc_cv_ld_sol2_emulation,
4889 [gcc_cv_ld_sol2_emulation=no
4890 if test $in_tree_ld = yes ; then
4891 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4892 "$gcc_cv_gld_minor_version" -ge 21 -o \
4893 "$gcc_cv_gld_major_version" -gt 2 \
4894 && test $in_tree_ld_is_elf = yes; then
4895 gcc_cv_ld_sol2_emulation=yes
4897 elif test x$gcc_cv_ld != x; then
4898 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4899 grep _sol2 > /dev/null; then
4900 gcc_cv_ld_sol2_emulation=yes
4903 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4904 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4905 [Define if your linker supports the *_sol2 emulations.])
4908 AC_CACHE_CHECK(linker --sysroot support,
4910 [gcc_cv_ld_sysroot=no
4911 if test $in_tree_ld = yes ; then
4912 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4913 gcc_cv_ld_sysroot=yes
4915 elif test x$gcc_cv_ld != x; then
4916 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4917 gcc_cv_ld_sysroot=yes
4920 if test x"$gcc_cv_ld_sysroot" = xyes; then
4921 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4922 [Define if your linker supports --sysroot.])
4925 # Test for stack protector support in target C library.
4926 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4927 gcc_cv_libc_provides_ssp,
4928 [gcc_cv_libc_provides_ssp=no
4930 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4931 # glibc 2.4 and later provides __stack_chk_fail and
4932 # either __stack_chk_guard, or TLS access to stack guard canary.
4933 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
4934 [if test -f $target_header_dir/features.h \
4935 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4936 $target_header_dir/features.h > /dev/null; then
4937 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4938 $target_header_dir/features.h > /dev/null && \
4939 test -f $target_header_dir/bits/uClibc_config.h && \
4940 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4941 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4942 gcc_cv_libc_provides_ssp=yes
4944 # all versions of Bionic support stack protector
4945 elif test -f $target_header_dir/sys/cdefs.h \
4946 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4947 $target_header_dir/sys/cdefs.h > /dev/null; then
4948 gcc_cv_libc_provides_ssp=yes
4952 # Avoid complicated tests (see
4953 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4954 # simply assert that glibc does provide this, which is true for all
4955 # realistically usable GNU/Hurd configurations.
4956 gcc_cv_libc_provides_ssp=yes;;
4957 *-*-darwin* | *-*-freebsd*)
4958 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4959 [echo "no __stack_chk_fail on this target"])
4961 *) gcc_cv_libc_provides_ssp=no ;;
4964 if test x$gcc_cv_libc_provides_ssp = xyes; then
4965 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4966 [Define if your target C library provides stack protector support])
4969 # Test for <sys/sdt.h> on the target.
4970 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4971 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4973 if test -f $target_header_dir/sys/sdt.h; then
4975 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4976 [Define if your target C library provides sys/sdt.h])
4978 AC_MSG_RESULT($have_sys_sdt_h)
4980 # Check if TFmode long double should be used by default or not.
4981 # Some glibc targets used DFmode long double, but with glibc 2.4
4982 # and later they can use TFmode.
4984 powerpc*-*-linux* | \
4988 AC_ARG_WITH(long-double-128,
4989 [AS_HELP_STRING([--with-long-double-128],
4990 [use 128-bit long double by default])],
4991 gcc_cv_target_ldbl128="$with_long_double_128",
4992 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
4993 [gcc_cv_target_ldbl128=no
4994 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4995 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4996 && gcc_cv_target_ldbl128=yes
5000 if test x$gcc_cv_target_ldbl128 = xyes; then
5001 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5002 [Define if TFmode long double should be the default])
5005 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5006 gcc_cv_target_dl_iterate_phdr=unknown
5008 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5009 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5010 # libdl there, both complicating its use and breaking compatibility
5011 # between Solaris 10 updates.
5012 *-*-solaris2.1[[1-9]]*)
5013 # <link.h> needs both a dl_iterate_phdr declaration and support for
5014 # compilation with largefile support.
5015 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5016 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5017 gcc_cv_target_dl_iterate_phdr=yes
5019 gcc_cv_target_dl_iterate_phdr=no
5023 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5024 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5025 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5026 [Define if your target C library provides the `dl_iterate_phdr' function.])
5028 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5030 # We no longer support different GC mechanisms. Emit an error if
5031 # the user configures with --with-gc.
5033 [AS_HELP_STRING([--with-gc={page,zone}],
5034 [this option is not supported anymore. It used to choose
5035 the garbage collection mechanism to use with the compiler])],
5036 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5039 # Libraries to use on the host. This will normally be set by the top
5040 # level Makefile. Here we simply capture the value for our Makefile.
5041 if test -z "${HOST_LIBS+set}"; then
5046 # Use the system's zlib library.
5048 zlibinc="-I\$(srcdir)/../zlib"
5049 AC_ARG_WITH(system-zlib,
5050 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5057 dnl Very limited version of automake's enable-maintainer-mode
5059 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5060 dnl maintainer-mode is disabled by default
5061 AC_ARG_ENABLE(maintainer-mode,
5062 [AS_HELP_STRING([--enable-maintainer-mode],
5063 [enable make rules and dependencies not useful
5064 (and sometimes confusing) to the casual installer])],
5065 maintainer_mode=$enableval,
5068 AC_MSG_RESULT($maintainer_mode)
5070 if test "$maintainer_mode" = "yes"; then
5077 dnl Whether to prevent multiple front-ends from linking at the same time
5079 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5080 AC_ARG_ENABLE(link-mutex,
5081 [AS_HELP_STRING([--enable-link-mutex],
5082 [avoid linking multiple front-ends at once to avoid thrashing
5083 on the build machine])],
5084 do_link_mutex=$enableval,
5086 AC_MSG_RESULT($do_link_mutex)
5088 if test "$do_link_mutex" = "yes"; then
5093 AC_SUBST(DO_LINK_MUTEX)
5099 # Make empty files to contain the specs and options for each language.
5100 # Then add #include lines to for a compiler that has specs and/or options.
5106 # These (without "all_") are set in each config-lang.in.
5107 # `language' must be a single word so is spelled singularly.
5110 all_outputs='Makefile'
5111 # List of language makefile fragments.
5113 # Additional files for gengtype
5114 all_gtfiles="$target_gtfiles"
5116 # These are the languages that are set in --enable-languages,
5117 # and are available in the GCC tree.
5118 all_selected_languages=
5120 # Add the language fragments.
5121 # Languages are added via two mechanisms. Some information must be
5122 # recorded in makefile variables, these are defined in config-lang.in.
5123 # We accumulate them and plug them into the main Makefile.
5124 # The other mechanism is a set of hooks for each of the main targets
5125 # like `clean', `install', etc.
5127 language_hooks="Make-hooks"
5129 for lang in ${srcdir}/*/config-lang.in
5132 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5134 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5135 if test "x$lang_alias" = x
5137 echo "$lang doesn't set \$language." 1>&2
5140 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5141 subdirs="$subdirs $subdir"
5143 # $gcc_subdir is where the gcc integration files are to be found
5144 # for a language, both for internal compiler purposes (compiler
5145 # sources implementing front-end to GCC tree converters), and for
5146 # build infrastructure purposes (Make-lang.in, etc.)
5148 # This will be <subdir> (relative to $srcdir) if a line like
5149 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5150 # is found in <langdir>/config-lang.in, and will remain <langdir>
5153 # Except for the language alias (fetched above), the regular
5154 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5155 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5156 # only this and the language alias.
5158 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5159 if [ "$gcc_subdir" = "" ]; then
5160 gcc_subdir="$subdir"
5163 case ",$enable_languages," in
5165 all_selected_languages="$all_selected_languages $lang_alias"
5166 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5167 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5179 . ${srcdir}/$gcc_subdir/config-lang.in
5180 if test "x$language" = x
5182 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5187 case ",$enable_languages," in
5190 for i in $subdir_requires; do
5191 test -f "${srcdir}/$i/config-lang.in" && continue
5199 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5200 if test -f $srcdir/$gcc_subdir/lang.opt; then
5201 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5202 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5204 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5205 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5207 all_languages="$all_languages $language"
5208 all_compilers="$all_compilers $compilers"
5209 all_outputs="$all_outputs $outputs"
5210 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5211 case ",$enable_languages," in
5213 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5215 AC_SUBST(enable_lto)
5222 for language in $all_selected_languages
5224 check_languages="$check_languages check-$language"
5227 # We link each language in with a set of hooks, reached indirectly via
5228 # lang.${target}. Only do so for selected languages.
5232 target_list="all.cross start.encap rest.encap tags \
5233 install-common install-man install-info install-pdf install-html dvi \
5234 pdf html uninstall info man srcextra srcman srcinfo \
5235 mostlyclean clean distclean maintainer-clean install-plugin"
5237 for t in $target_list
5240 for lang in $all_selected_languages
5244 echo "lang.$t: $x" >> Make-hooks
5248 # Option include files
5251 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5252 option_includes="option-includes.mk"
5253 AC_SUBST_FILE(option_includes)
5261 echo "dir ." > .gdbinit
5262 echo "dir ${srcdir}" >> .gdbinit
5263 if test x$gdb_needs_out_file_path = xyes
5265 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5267 if test "x$subdirs" != x; then
5270 echo "dir ${srcdir}/$s" >> .gdbinit
5273 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5274 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5276 # Put a breakpoint on __asan_report_error to help with debugging buffer
5279 *-fsanitize=address*)
5280 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5284 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5285 AC_SUBST(gcc_tooldir)
5288 # Find a directory in which to install a shared libgcc.
5290 AC_ARG_ENABLE(version-specific-runtime-libs,
5291 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5292 [specify that runtime libraries should be
5293 installed in a compiler-specific directory])])
5295 # Substitute configuration variables
5298 AC_SUBST(all_compilers)
5299 AC_SUBST(all_gtfiles)
5300 AC_SUBST(all_lang_makefrags)
5301 AC_SUBST(all_languages)
5302 AC_SUBST(all_selected_languages)
5303 AC_SUBST(build_exeext)
5304 AC_SUBST(build_install_headers_dir)
5305 AC_SUBST(build_xm_file_list)
5306 AC_SUBST(build_xm_include_list)
5307 AC_SUBST(build_xm_defines)
5308 AC_SUBST(build_file_translate)
5309 AC_SUBST(check_languages)
5310 AC_SUBST(cpp_install_dir)
5311 AC_SUBST(xmake_file)
5312 AC_SUBST(tmake_file)
5313 AC_SUBST(TM_ENDIAN_CONFIG)
5314 AC_SUBST(TM_MULTILIB_CONFIG)
5315 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5316 AC_SUBST(extra_gcc_objs)
5317 AC_SUBST(user_headers_inc_next_pre)
5318 AC_SUBST(user_headers_inc_next_post)
5319 AC_SUBST(extra_headers_list)
5320 AC_SUBST(extra_objs)
5321 AC_SUBST(extra_programs)
5322 AC_SUBST(float_h_file)
5323 AC_SUBST(gcc_config_arguments)
5324 AC_SUBST(gcc_gxx_include_dir)
5325 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5326 AC_SUBST(host_exeext)
5327 AC_SUBST(host_xm_file_list)
5328 AC_SUBST(host_xm_include_list)
5329 AC_SUBST(host_xm_defines)
5330 AC_SUBST(out_host_hook_obj)
5332 AC_SUBST(lang_opt_files)
5333 AC_SUBST(lang_specs_files)
5334 AC_SUBST(lang_tree_files)
5335 AC_SUBST(local_prefix)
5337 AC_SUBST(objc_boehm_gc)
5339 AC_SUBST(out_object_file)
5340 AC_SUBST(common_out_file)
5341 AC_SUBST(common_out_object_file)
5342 AC_SUBST(tm_file_list)
5343 AC_SUBST(tm_include_list)
5344 AC_SUBST(tm_defines)
5345 AC_SUBST(tm_p_file_list)
5346 AC_SUBST(tm_p_include_list)
5347 AC_SUBST(xm_file_list)
5348 AC_SUBST(xm_include_list)
5349 AC_SUBST(xm_defines)
5350 AC_SUBST(use_gcc_stdint)
5351 AC_SUBST(c_target_objs)
5352 AC_SUBST(cxx_target_objs)
5353 AC_SUBST(fortran_target_objs)
5354 AC_SUBST(target_cpu_default)
5356 AC_SUBST_FILE(language_hooks)
5359 if test x${build} = x${host} ; then
5360 if test x${host} = x${target} ; then
5361 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5363 echo "Links are now set up to build a cross-compiler" 1>&2
5364 echo " from ${host} to ${target}." 1>&2
5367 if test x${host} = x${target} ; then
5368 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5369 echo " for ${target}." 1>&2
5371 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5372 echo " from ${host} to ${target}." 1>&2
5376 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5377 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5379 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5380 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5382 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5383 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5384 if test "x${CLOOGLIBS}" != "x" ; then
5385 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5388 # Check for plugin support
5389 AC_ARG_ENABLE(plugin,
5390 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5391 enable_plugin=$enableval,
5392 enable_plugin=yes; default_plugin=yes)
5398 if test x$build = x$host; then
5399 export_sym_check="nm${exeext} -g"
5400 elif test x$host = x$target; then
5401 export_sym_check="$gcc_cv_nm -g"
5407 if test x$build = x$host; then
5408 export_sym_check="objdump${exeext} -T"
5409 elif test x$host = x$target; then
5410 export_sym_check="$gcc_cv_objdump -T"
5417 if test x"$enable_plugin" = x"yes"; then
5419 AC_MSG_CHECKING([for exported symbols])
5420 if test "x$export_sym_check" != x; then
5421 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5422 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5423 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5424 : # No need to use a flag
5425 AC_MSG_RESULT([yes])
5427 AC_MSG_RESULT([yes])
5428 AC_MSG_CHECKING([for -rdynamic])
5429 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5430 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5432 pluginlibs="-rdynamic"
5437 AC_MSG_RESULT([$plugin_rdynamic])
5440 AC_MSG_RESULT([unable to check])
5445 AC_SEARCH_LIBS([dlopen], [dl])
5446 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5447 pluginlibs="$pluginlibs -ldl"
5451 # Check that we can build shared objects with -fPIC -shared
5452 saved_LDFLAGS="$LDFLAGS"
5453 saved_CFLAGS="$CFLAGS"
5456 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5457 CFLAGS="$CFLAGS -fPIC"
5458 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5461 CFLAGS="$CFLAGS -fPIC"
5462 LDFLAGS="$LDFLAGS -fPIC -shared"
5465 AC_MSG_CHECKING([for -fPIC -shared])
5467 [extern int X;],[return X == 0;],
5468 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5469 [AC_MSG_RESULT([no]); have_pic_shared=no])
5470 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5474 LDFLAGS="$saved_LDFLAGS"
5475 CFLAGS="$saved_CFLAGS"
5477 # If plugin support had been requested but not available, fail.
5478 if test x"$enable_plugin" = x"no" ; then
5479 if test x"$default_plugin" != x"yes"; then
5481 Building GCC with plugin support requires a host that supports
5482 -fPIC, -shared, -ldl and -rdynamic.])
5487 AC_SUBST(pluginlibs)
5488 AC_SUBST(enable_plugin)
5489 if test x"$enable_plugin" = x"yes"; then
5490 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5494 # Enable --enable-host-shared
5495 AC_ARG_ENABLE(host-shared,
5496 [AS_HELP_STRING([--enable-host-shared],
5497 [build host code as shared libraries])],
5498 [PICFLAG=-fPIC], [PICFLAG=])
5499 AC_SUBST(enable_host_shared)
5503 AC_ARG_ENABLE(libquadmath-support,
5504 [AS_HELP_STRING([--disable-libquadmath-support],
5505 [disable libquadmath support for Fortran])],
5506 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5507 ENABLE_LIBQUADMATH_SUPPORT=yes)
5508 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5509 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5510 [Define to 1 to enable libquadmath support])
5514 # Specify what hash style to use by default.
5515 AC_ARG_WITH([linker-hash-style],
5516 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5517 [specify the linker hash style])],
5518 [case x"$withval" in
5520 LINKER_HASH_STYLE=sysv
5523 LINKER_HASH_STYLE=gnu
5526 LINKER_HASH_STYLE=both
5529 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5532 [LINKER_HASH_STYLE=''])
5533 if test x"${LINKER_HASH_STYLE}" != x; then
5534 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5535 [The linker hash style])
5538 # Configure the subdirectories
5539 # AC_CONFIG_SUBDIRS($subdirs)
5541 # Create the Makefile
5542 # and configure language subdirectories
5543 AC_CONFIG_FILES($all_outputs)
5545 AC_CONFIG_COMMANDS([default],
5547 case ${CONFIG_HEADERS} in
5548 *auto-host.h:config.in*)
5551 # Make sure all the subdirs exist.
5552 for d in $subdirs doc build common c-family
5554 test -d $d || mkdir $d
5557 [subdirs='$subdirs'])