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 saved_CFLAGS="${CFLAGS}"
1533 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1534 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1535 ${realsrcdir}/configure \
1536 --enable-languages=${enable_languages-all} \
1537 --target=$target_alias --host=$build_alias --build=$build_alias
1538 CFLAGS="${saved_CFLAGS}"
1540 # We just finished tests for the build machine, so rename
1541 # the file auto-build.h in the gcc directory.
1542 mv auto-host.h ../auto-build.h
1545 build_auto=auto-build.h
1547 AC_SUBST(build_subdir)
1549 tm_file="${tm_file} defaults.h"
1550 tm_p_file="${tm_p_file} tm-preds.h"
1551 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1552 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1553 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1554 # put this back in temporarily.
1555 xm_file="auto-host.h ansidecl.h ${xm_file}"
1562 # Compile in configure arguments.
1563 if test -f configargs.h ; then
1564 # Being re-configured.
1565 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1566 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1568 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1571 # Double all backslashes and backslash all quotes to turn
1572 # gcc_config_arguments into a C string.
1573 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1574 $gcc_config_arguments
1576 gcc_config_arguments_str=`cat conftest.out`
1579 cat > configargs.h <<EOF
1580 /* Generated automatically. */
1581 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1582 static const char thread_model[] = "$thread_file";
1584 static const struct {
1585 const char *name, *value;
1586 } configure_default_options[] = $configure_default_options;
1591 gcc_BASEVER=`cat $srcdir/BASE-VER`
1592 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1593 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1594 if test -f $srcdir/REVISION ; then
1595 gcc_REVISION=`cat $srcdir/REVISION`
1599 cat > plugin-version.h <<EOF
1600 #include "configargs.h"
1602 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1603 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1604 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1605 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1607 static char basever[] = "$gcc_BASEVER";
1608 static char datestamp[] = "$gcc_DATESTAMP";
1609 static char devphase[] = "$gcc_DEVPHASE";
1610 static char revision[] = "$gcc_REVISION";
1612 /* FIXME plugins: We should make the version information more precise.
1613 One way to do is to add a checksum. */
1615 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1617 configuration_arguments};
1621 # Internationalization
1622 ZW_GNU_GETTEXT_SISTER_DIR
1624 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1625 # -liconv on the link line twice.
1626 case "$LIBINTL" in *$LIBICONV*)
1630 AC_ARG_ENABLE(secureplt,
1631 [AS_HELP_STRING([--enable-secureplt],
1632 [enable -msecure-plt by default for PowerPC])],
1635 AC_ARG_ENABLE(leading-mingw64-underscores,
1636 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1637 [enable leading underscores on 64 bit mingw targets]),
1639 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1640 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1641 [Define if we should use leading underscore on 64 bit mingw targets])])
1644 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1647 AC_ARG_ENABLE(frame-pointer,
1648 [AS_HELP_STRING([--enable-frame-pointer],
1649 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1652 linux* | darwin[[8912]]*)
1653 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1655 enable_frame_pointer=no
1658 enable_frame_pointer=yes
1663 # Windows32 Registry support for specifying GCC installation paths.
1664 AC_ARG_ENABLE(win32-registry,
1665 [AS_HELP_STRING([--disable-win32-registry],
1666 [disable lookup of installation paths in the
1667 Registry on Windows hosts])
1668 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1669 AS_HELP_STRING([--enable-win32-registry=KEY],
1670 [use KEY instead of GCC version as the last portion
1671 of the registry key])],,)
1674 win32 | pe | cygwin* | mingw32* | uwin*)
1675 if test "x$enable_win32_registry" != xno; then
1676 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1679 if test "x$enable_win32_registry" != xno; then
1680 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1681 [Define to 1 if installation paths should be looked up in the Windows
1682 Registry. Ignored on non-Windows hosts.])
1684 if test "x$enable_win32_registry" != xyes \
1685 && test "x$enable_win32_registry" != x; then
1686 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1687 [Define to be the last component of the Windows registry key under which
1688 to look for installation paths. The full key used will be
1689 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1690 The default is the GCC version number.])
1696 # Get an absolute path to the GCC top-level source directory
1697 holddir=`${PWDCMD-pwd}`
1699 topdir=`${PWDCMD-pwd}`
1702 # Conditionalize the makefile for this host machine.
1704 for f in ${host_xmake_file}
1706 if test -f ${srcdir}/config/$f
1708 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1712 # Conditionalize the makefile for this target machine.
1714 for f in ${tmake_file}
1716 if test -f ${srcdir}/config/$f
1718 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1721 tmake_file="${tmake_file_}"
1723 out_object_file=`basename $out_file .c`.o
1724 common_out_object_file=`basename $common_out_file .c`.o
1726 tm_file_list="options.h"
1727 tm_include_list="options.h insn-constants.h"
1728 for f in $tm_file; do
1731 f=`echo $f | sed 's/^..//'`
1732 tm_file_list="${tm_file_list} $f"
1733 tm_include_list="${tm_include_list} $f"
1736 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1737 tm_include_list="${tm_include_list} $f"
1740 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1741 tm_include_list="${tm_include_list} config/$f"
1748 for f in $tm_p_file; do
1751 tm_p_file_list="${tm_p_file_list} $f"
1752 tm_p_include_list="${tm_p_include_list} $f"
1755 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1756 tm_p_include_list="${tm_p_include_list} config/$f"
1762 for f in $xm_file; do
1765 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1766 xm_include_list="${xm_include_list} $f"
1769 xm_file_list="${xm_file_list} $f"
1770 xm_include_list="${xm_include_list} $f"
1773 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1774 xm_include_list="${xm_include_list} config/$f"
1780 host_xm_include_list=
1781 for f in $host_xm_file; do
1784 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1785 host_xm_include_list="${host_xm_include_list} $f"
1788 host_xm_file_list="${host_xm_file_list} $f"
1789 host_xm_include_list="${host_xm_include_list} $f"
1792 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1793 host_xm_include_list="${host_xm_include_list} config/$f"
1799 for f in $build_xm_file; do
1802 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1803 build_xm_include_list="${build_xm_include_list} $f"
1805 auto-build.h | auto-host.h )
1806 build_xm_file_list="${build_xm_file_list} $f"
1807 build_xm_include_list="${build_xm_include_list} $f"
1810 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1811 build_xm_include_list="${build_xm_include_list} config/$f"
1816 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1817 # cross-compiler which does not use the native headers and libraries.
1818 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1819 CROSS= AC_SUBST(CROSS)
1820 ALL=all.internal AC_SUBST(ALL)
1821 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1823 if test "x$with_build_sysroot" != x; then
1824 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1826 # This value is used, even on a native system, because
1827 # CROSS_SYSTEM_HEADER_DIR is just
1828 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1829 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1832 if test x$host != x$target
1834 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1836 SYSTEM_HEADER_DIR=$build_system_header_dir
1837 case "$host","$target" in
1838 # Darwin crosses can use the host system's libraries and headers,
1839 # because of the fat library support. Of course, it must be the
1840 # same version of Darwin on both sides. Allow the user to
1841 # just say --target=foo-darwin without a version number to mean
1842 # "the version on this system".
1843 *-*-darwin*,*-*-darwin*)
1844 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1845 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1846 if test $hostos = $targetos -o $targetos = darwin ; then
1848 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1853 i?86-*-*,x86_64-*-* \
1854 | powerpc*-*-*,powerpc64*-*-*)
1855 CROSS="$CROSS -DNATIVE_CROSS" ;;
1860 if test "x$with_headers" = x; then
1867 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1868 SYSTEM_HEADER_DIR=$build_system_header_dir
1871 # If this is a cross-compiler that does not
1872 # have its own set of headers then define
1875 # If this is using newlib, without having the headers available now,
1876 # then define inhibit_libc in LIBGCC2_CFLAGS.
1877 # This prevents libgcc2 from containing any code which requires libc
1879 : ${inhibit_libc=false}
1880 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1881 test x$with_newlib = xyes ; } &&
1882 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1885 AC_SUBST(inhibit_libc)
1887 # When building gcc with a cross-compiler, we need to adjust things so
1888 # that the generator programs are still built with the native compiler.
1889 # Also, we cannot run fixincludes.
1891 # These are the normal (build=host) settings:
1892 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1893 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1894 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1895 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1896 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1897 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1899 # And these apply if build != host, or we are generating coverage data
1900 if test x$build != x$host || test "x$coverage_flags" != x
1902 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1903 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1906 # Expand extra_headers to include complete path.
1907 # This substitutes for lots of t-* files.
1909 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1910 for file in ${extra_headers} ; do
1911 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1914 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1915 if test x"$use_gcc_tgmath" = xyes
1916 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1919 # Define collect2 in Makefile.
1920 case $host_can_use_collect2 in
1922 *) collect2='collect2$(exeext)' ;;
1924 AC_SUBST([collect2])
1926 # Add a definition of USE_COLLECT2 if system wants one.
1927 case $use_collect2 in
1928 no) use_collect2= ;;
1931 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1932 xm_defines="${xm_defines} USE_COLLECT2"
1933 case $host_can_use_collect2 in
1935 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1941 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1942 [Define to the name of the LTO plugin DSO that must be
1943 passed to the linker's -plugin=LIB option.])
1945 # ---------------------------
1946 # Assembler & linker features
1947 # ---------------------------
1949 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1950 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1951 # However when ld-new is first executed from the build tree, libtool will
1952 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1953 # to the build tree. While doing this we need to use the previous-stage
1954 # linker, or we have an infinite loop. The presence of a shell script as
1955 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1956 # the gcc/collect-ld script. So we need to know how libtool works, or
1957 # exec-tool will fail.
1959 m4_defun([_LT_CONFIG_COMMANDS], [])
1962 AC_SUBST(enable_fast_install)
1964 # Identify the assembler which will work hand-in-glove with the newly
1965 # built GCC, so that we can examine its features. This is the assembler
1966 # which will be driven by the driver program.
1968 # If build != host, and we aren't building gas in-tree, we identify a
1969 # build->target assembler and hope that it will have the same features
1970 # as the host->target assembler we'll be using.
1971 gcc_cv_gas_major_version=
1972 gcc_cv_gas_minor_version=
1973 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1975 m4_pattern_allow([AS_FOR_TARGET])dnl
1976 AS_VAR_SET_IF(gcc_cv_as,, [
1977 if test -x "$DEFAULT_ASSEMBLER"; then
1978 gcc_cv_as="$DEFAULT_ASSEMBLER"
1979 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1980 && test -f ../gas/Makefile \
1981 && test x$build = x$host; then
1982 gcc_cv_as=../gas/as-new$build_exeext
1983 elif test -x as$build_exeext; then
1984 # Build using assembler in the current directory.
1985 gcc_cv_as=./as$build_exeext
1986 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1987 gcc_cv_as="$AS_FOR_TARGET"
1989 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1992 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1993 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1994 case "$ORIGINAL_AS_FOR_TARGET" in
1995 ./as | ./as$build_exeext) ;;
1996 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1999 AC_MSG_CHECKING(what assembler to use)
2000 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2001 # Single tree build which includes gas. We want to prefer it
2002 # over whatever linker top-level may have detected, since
2003 # we'll use what we're building after installation anyway.
2004 AC_MSG_RESULT(newly built gas)
2006 _gcc_COMPUTE_GAS_VERSION
2007 in_tree_gas_is_elf=no
2008 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2009 || (grep 'obj_format = multi' ../gas/Makefile \
2010 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2012 in_tree_gas_is_elf=yes
2015 AC_MSG_RESULT($gcc_cv_as)
2019 # Identify the linker which will work hand-in-glove with the newly
2020 # built GCC, so that we can examine its features. This is the linker
2021 # which will be driven by the driver program.
2023 # If build != host, and we aren't building gas in-tree, we identify a
2024 # build->target linker and hope that it will have the same features
2025 # as the host->target linker we'll be using.
2026 gcc_cv_gld_major_version=
2027 gcc_cv_gld_minor_version=
2028 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2029 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2031 AS_VAR_SET_IF(gcc_cv_ld,, [
2032 if test -x "$DEFAULT_LINKER"; then
2033 gcc_cv_ld="$DEFAULT_LINKER"
2034 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2035 && test -f ../ld/Makefile \
2036 && test x$build = x$host; then
2037 gcc_cv_ld=../ld/ld-new$build_exeext
2038 elif test -x collect-ld$build_exeext; then
2039 # Build using linker in the current directory.
2040 gcc_cv_ld=./collect-ld$build_exeext
2041 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2042 gcc_cv_ld="$LD_FOR_TARGET"
2044 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2047 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2048 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2049 # if the PLUGIN_LD is set ld-new, just have it as ld
2050 # as that is the installed named.
2051 if test x$PLUGIN_LD_SUFFIX = xld-new \
2052 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2055 AC_ARG_WITH(plugin-ld,
2056 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2057 [if test x"$withval" != x; then
2058 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2059 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2061 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2062 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2064 # Check to see if we are using gold instead of ld
2065 AC_MSG_CHECKING(whether we are using gold)
2067 if test x$gcc_cv_ld != x; then
2068 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2069 | grep "GNU gold" > /dev/null; then
2073 AC_MSG_RESULT($ld_is_gold)
2075 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2076 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2077 case "$ORIGINAL_LD_FOR_TARGET" in
2078 ./collect-ld | ./collect-ld$build_exeext) ;;
2079 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2082 AC_MSG_CHECKING(what linker to use)
2083 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2084 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2085 # Single tree build which includes ld. We want to prefer it
2086 # over whatever linker top-level may have detected, since
2087 # we'll use what we're building after installation anyway.
2088 AC_MSG_RESULT(newly built ld)
2090 in_tree_ld_is_elf=no
2091 if (grep 'EMUL = .*elf' ../ld/Makefile \
2092 || grep 'EMUL = .*linux' ../ld/Makefile \
2093 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2094 in_tree_ld_is_elf=yes
2095 elif test "$ld_is_gold" = yes; then
2096 in_tree_ld_is_elf=yes
2098 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
2101 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2102 if test x$gcc_cv_gld_version != x; then
2106 case $gcc_cv_gld_version in
2109 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2112 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2113 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2116 AC_MSG_RESULT($gcc_cv_ld)
2120 # Figure out what nm we will be using.
2121 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2122 AS_VAR_SET_IF(gcc_cv_nm,, [
2123 if test -f $gcc_cv_binutils_srcdir/configure.in \
2124 && test -f ../binutils/Makefile \
2125 && test x$build = x$host; then
2126 gcc_cv_nm=../binutils/nm-new$build_exeext
2127 elif test -x nm$build_exeext; then
2128 gcc_cv_nm=./nm$build_exeext
2129 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2130 gcc_cv_nm="$NM_FOR_TARGET"
2132 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2135 AC_MSG_CHECKING(what nm to use)
2136 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2137 # Single tree build which includes binutils.
2138 AC_MSG_RESULT(newly built nm)
2141 AC_MSG_RESULT($gcc_cv_nm)
2145 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2146 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2147 case "$ORIGINAL_NM_FOR_TARGET" in
2148 ./nm | ./nm$build_exeext) ;;
2149 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2153 # Figure out what objdump we will be using.
2154 AS_VAR_SET_IF(gcc_cv_objdump,, [
2155 if test -f $gcc_cv_binutils_srcdir/configure.in \
2156 && test -f ../binutils/Makefile \
2157 && test x$build = x$host; then
2158 # Single tree build which includes binutils.
2159 gcc_cv_objdump=../binutils/objdump$build_exeext
2160 elif test -x objdump$build_exeext; then
2161 gcc_cv_objdump=./objdump$build_exeext
2162 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2163 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2165 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2168 AC_MSG_CHECKING(what objdump to use)
2169 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2170 # Single tree build which includes binutils.
2171 AC_MSG_RESULT(newly built objdump)
2172 elif test x$gcc_cv_objdump = x; then
2173 AC_MSG_RESULT(not found)
2175 AC_MSG_RESULT($gcc_cv_objdump)
2178 # Figure out what readelf we will be using.
2179 AS_VAR_SET_IF(gcc_cv_readelf,, [
2180 if test -f $gcc_cv_binutils_srcdir/configure.in \
2181 && test -f ../binutils/Makefile \
2182 && test x$build = x$host; then
2183 # Single tree build which includes binutils.
2184 gcc_cv_readelf=../binutils/readelf$build_exeext
2185 elif test -x readelf$build_exeext; then
2186 gcc_cv_readelf=./readelf$build_exeext
2188 AC_PATH_PROG(gcc_cv_readelf, readelf)
2191 AC_MSG_CHECKING(what readelf to use)
2192 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2193 # Single tree build which includes binutils.
2194 AC_MSG_RESULT(newly built readelf)
2195 elif test x$gcc_cv_readelf = x; then
2196 AC_MSG_RESULT(not found)
2198 AC_MSG_RESULT($gcc_cv_readelf)
2201 # Figure out what assembler alignment features are present.
2202 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2206 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2207 [Define if your assembler supports .balign and .p2align.])])
2209 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2212 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2213 [Define if your assembler supports specifying the maximum number
2214 of bytes to skip when using the GAS .p2align command.])])
2216 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2219 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2220 [Define if your assembler supports .literal16.])])
2222 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2224 [conftest_label1: .word 0
2226 conftest_label2: .word 0
2228 [if test x$gcc_cv_nm != x; then
2229 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2230 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2231 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2233 else gcc_cv_as_subsection_m1=yes
2235 rm -f conftest.nm1 conftest.nm2
2237 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2238 [Define if your assembler supports .subsection and .subsection -1 starts
2239 emitting at the beginning of your section.])])
2241 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2244 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2246 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2248 [ .weakref foobar, barfnot],,
2249 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2251 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2254 .NSUBSPA $CODE$,COMDAT],,
2255 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2257 # .hidden needs to be supported in both the assembler and the linker,
2258 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2259 # This is irritatingly difficult to feature test for; we have to check the
2260 # date string after the version number. If we've got an in-tree
2261 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2263 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2264 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2268 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2269 # STV_HIDDEN, so disable .hidden support if so.
2271 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2272 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2273 cat > conftest.s <<EOF
2280 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2281 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2282 grep '\.hidden default' > /dev/null; then
2285 gcc_cv_as_hidden=yes
2288 # Assume bug is present if objdump is missing.
2293 gcc_cv_as_hidden=yes
2298 # Darwin as has some visibility support, though with a different syntax.
2299 gcc_cv_as_hidden=yes
2303 # gnu_indirect_function type is an extension proposed at
2304 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2305 # selection of function implementation
2306 AC_ARG_ENABLE(gnu-indirect-function,
2307 [AS_HELP_STRING([--enable-gnu-indirect-function],
2308 [enable the use of the @gnu_indirect_function to glibc systems])],
2309 [case $enable_gnu_indirect_function in
2311 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2312 Valid choices are 'yes' and 'no'.]) ;;
2314 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2316 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2317 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2318 [Define if your system supports gnu indirect functions.])
2322 if test $in_tree_ld != yes ; then
2323 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2324 if echo "$ld_ver" | grep GNU > /dev/null; then
2325 if test x"$ld_is_gold" = xyes; then
2326 # GNU gold --version looks like this:
2328 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2330 # We extract the binutils version which is more familiar and specific
2331 # than the gold version.
2332 ld_vers=`echo $ld_ver | sed -n \
2333 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2335 # GNU ld --version looks like this:
2337 # GNU ld (GNU Binutils) 2.21.51.20110225
2338 ld_vers=`echo $ld_ver | sed -n \
2339 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2341 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2342 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2343 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2344 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2348 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2351 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2352 # /usr/ccs/bin/ld has been configured.
2353 ld_ver=`$gcc_cv_ld -V 2>&1`
2354 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2355 ld_vers=`echo $ld_ver | sed -n \
2356 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2357 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2358 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2366 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2367 [[if test $in_tree_ld = yes ; then
2369 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2370 && test $in_tree_ld_is_elf = yes; then
2371 gcc_cv_ld_hidden=yes
2374 gcc_cv_ld_hidden=yes
2375 if test x"$ld_is_gold" = xyes; then
2377 elif echo "$ld_ver" | grep GNU > /dev/null; then
2379 mmix-knuth-mmixware)
2380 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2384 if test 0"$ld_date" -lt 20020404; then
2385 if test -n "$ld_date"; then
2386 # If there was date string, but was earlier than 2002-04-04, fail
2388 elif test -z "$ld_vers"; then
2389 # If there was no date string nor ld version number, something is wrong
2392 test -z "$ld_vers_patch" && ld_vers_patch=0
2393 if test "$ld_vers_major" -lt 2; then
2395 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2396 gcc_cv_ld_hidden="no"
2397 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2405 # Darwin ld has some visibility support.
2406 gcc_cv_ld_hidden=yes
2408 hppa64*-*-hpux* | ia64*-*-hpux*)
2409 gcc_cv_ld_hidden=yes
2411 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2412 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2413 # .symbolic was only added in Solaris 9 12/02.
2414 gcc_cv_ld_hidden=yes
2422 libgcc_visibility=no
2423 AC_SUBST(libgcc_visibility)
2424 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2425 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2426 libgcc_visibility=yes
2427 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2428 [Define if your assembler and linker support .hidden.])
2431 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2432 gcc_cv_ld_ro_rw_mix=unknown
2433 if test $in_tree_ld = yes ; then
2434 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2435 && test $in_tree_ld_is_elf = yes; then
2436 gcc_cv_ld_ro_rw_mix=read-write
2438 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2439 echo '.section myfoosect, "a"' > conftest1.s
2440 echo '.section myfoosect, "aw"' > conftest2.s
2441 echo '.byte 1' >> conftest2.s
2442 echo '.section myfoosect, "a"' > conftest3.s
2443 echo '.byte 0' >> conftest3.s
2444 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2445 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2446 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2447 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2448 conftest2.o conftest3.o > /dev/null 2>&1; then
2449 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2450 | sed -e '/myfoosect/!d' -e N`
2451 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2452 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2453 gcc_cv_ld_ro_rw_mix=read-only
2455 gcc_cv_ld_ro_rw_mix=read-write
2460 rm -f conftest.* conftest[123].*
2463 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2464 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2465 [Define if your linker links a mix of read-only
2466 and read-write sections into a read-write section.])
2468 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2470 gcc_AC_INITFINI_ARRAY
2472 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2473 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2481 [[# GAS versions before 2.11 do not support uleb128,
2482 # despite appearing to.
2483 # ??? There exists an elf-specific test that will crash
2484 # the assembler. Perhaps it's better to figure out whether
2485 # arbitrary sections are supported and try the test.
2486 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2487 if echo "$as_ver" | grep GNU > /dev/null; then
2488 as_vers=`echo $as_ver | sed -n \
2489 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2490 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2491 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2492 if test $as_major -eq 2 && test $as_minor -lt 11
2494 else gcc_cv_as_leb128=yes
2497 [AC_DEFINE(HAVE_AS_LEB128, 1,
2498 [Define if your assembler supports .sleb128 and .uleb128.])])
2500 # Check if we have assembler support for unwind directives.
2501 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2508 .cfi_escape 1, 2, 3, 4, 5
2512 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2513 # read-only and read-write sections, we need to make sure that the
2514 # assembler used emits read-write .eh_frame sections.
2515 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2516 if test "x$gcc_cv_objdump" != x; then
2517 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2518 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2519 gcc_cv_as_cfi_directive=no
2522 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2523 # On Solaris/x86, make sure that GCC and gas agree on using
2524 # read-only .eh_frame sections for 64-bit.
2525 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2526 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2527 sed -e /.eh_frame/!d -e N | \
2528 grep READONLY > /dev/null; then
2529 gcc_cv_as_cfi_directive=yes
2531 gcc_cv_as_cfi_directive=no
2535 gcc_cv_as_cfi_directive=yes
2540 # no objdump, err on the side of caution
2541 gcc_cv_as_cfi_directive=no
2544 gcc_cv_as_cfi_directive=yes
2548 gcc_cv_as_cfi_directive=yes
2551 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2552 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2556 .cfi_adjust_cfa_offset 64
2558 .cfi_adjust_cfa_offset 128
2561 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2562 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2563 gcc_cv_as_cfi_advance_working=yes
2567 # no objdump, err on the side of caution
2568 gcc_cv_as_cfi_advance_working=no
2570 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2571 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2572 [`if test $gcc_cv_as_cfi_directive = yes \
2573 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2574 [Define 0/1 if your assembler supports CFI directives.])
2576 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2577 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2578 gcc_cv_as_cfi_personality_directive, ,,
2581 .cfi_personality 0, symbol
2583 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2584 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2585 then echo 1; else echo 0; fi`],
2586 [Define 0/1 if your assembler supports .cfi_personality.])
2588 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2589 gcc_cv_as_cfi_sections_directive, ,,
2591 .cfi_sections .debug_frame, .eh_frame
2595 win32 | pe | cygwin* | mingw32* | uwin*)
2596 # Need to check that we generated the correct relocation for the
2597 # .debug_frame section. This was fixed for binutils 2.21.
2598 gcc_cv_as_cfi_sections_directive=no
2599 if test "x$gcc_cv_objdump" != x; then
2600 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2601 grep secrel > /dev/null; then
2602 gcc_cv_as_cfi_sections_directive=yes
2607 gcc_cv_as_cfi_sections_directive=yes
2610 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2611 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2612 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2613 then echo 1; else echo 0; fi`],
2614 [Define 0/1 if your assembler supports .cfi_sections.])
2616 # GAS versions up to and including 2.11.0 may mis-optimize
2618 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2626 .section .eh_frame,"aw",@progbits
2628 .4byte .LECIE1-.LSCIE1
2642 .4byte .LEFDE1-.LASFDE1
2644 .4byte .LASFDE1-__FRAME_BEGIN__
2652 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2653 cat > conftest.lit <<EOF
2654 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2655 0010 01000000 12000000 18000000 00000000 ................
2656 0020 08000000 04080000 0044 .........D @&t@
2658 cat > conftest.big <<EOF
2659 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2660 0010 00000001 00000012 00000018 00000000 ................
2661 0020 00000008 04000000 0844 .........D @&t@
2663 # If the assembler didn't choke, and we can objdump,
2664 # and we got the correct data, then succeed.
2665 # The text in the here-document typically retains its unix-style line
2666 # endings, while the output of objdump will use host line endings.
2667 # Therefore, use diff -b for the comparisons.
2668 if test x$gcc_cv_objdump != x \
2669 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2670 | tail -3 > conftest.got \
2671 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2672 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2674 gcc_cv_as_eh_frame=yes
2675 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2676 gcc_cv_as_eh_frame=buggy
2678 # Uh oh, what do we do now?
2679 gcc_cv_as_eh_frame=no
2682 if test $gcc_cv_as_eh_frame = buggy; then
2683 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2684 [Define if your assembler mis-optimizes .eh_frame data.])
2687 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2688 [elf,2,12,0], [--fatal-warnings],
2689 [.section .rodata.str, "aMS", @progbits, 1])
2690 if test $gcc_cv_as_shf_merge = no; then
2691 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2692 [elf,2,12,0], [--fatal-warnings],
2693 [.section .rodata.str, "aMS", %progbits, 1])
2695 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2696 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2697 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2699 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2700 gcc_cv_as_comdat_group,
2701 [elf,2,16,0], [--fatal-warnings],
2702 [.section .text,"axG",@progbits,.foo,comdat])
2703 if test $gcc_cv_as_comdat_group = yes; then
2704 gcc_cv_as_comdat_group_percent=no
2705 gcc_cv_as_comdat_group_group=no
2707 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2708 gcc_cv_as_comdat_group_percent,
2709 [elf,2,16,0], [--fatal-warnings],
2710 [.section .text,"axG",%progbits,.foo,comdat])
2711 if test $gcc_cv_as_comdat_group_percent = yes; then
2712 gcc_cv_as_comdat_group_group=no
2714 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2715 gcc_cv_as_comdat_group_group=no
2718 # Sun as uses a completely different syntax.
2723 .group foo,".text%foo",#comdat
2724 .section ".text%foo", #alloc,#execinstr,#progbits
2729 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2731 .group foo,.text%foo,#comdat
2732 .section .text%foo, "ax", @progbits
2738 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2739 gcc_cv_as_comdat_group_group,
2745 if test x"$ld_is_gold" = xyes; then
2747 elif test $in_tree_ld = yes ; then
2749 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2750 && test $in_tree_ld_is_elf = yes; then
2753 elif echo "$ld_ver" | grep GNU > /dev/null; then
2755 if test 0"$ld_date" -lt 20050308; then
2756 if test -n "$ld_date"; then
2757 # If there was date string, but was earlier than 2005-03-08, fail
2759 elif test "$ld_vers_major" -lt 2; then
2761 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2768 *-*-solaris2.1[1-9]*)
2770 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2771 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2774 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2775 # least ld version 1.2267.
2776 if test "$ld_vers_major" -gt 1; then
2778 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2780 elif test "$ld_vers_minor" -ge 2267; then
2785 # Assume linkers other than GNU ld don't support COMDAT group.
2791 # Allow overriding the automatic COMDAT group tests above.
2792 AC_ARG_ENABLE(comdat,
2793 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2794 [comdat_group="$enable_comdat"])
2795 if test $comdat_group = no; then
2796 gcc_cv_as_comdat_group=no
2797 gcc_cv_as_comdat_group_percent=no
2798 gcc_cv_as_comdat_group_group=no
2800 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2801 [`if test $gcc_cv_as_comdat_group = yes \
2802 || test $gcc_cv_as_comdat_group_percent = yes \
2803 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2804 [Define 0/1 if your assembler and linker support COMDAT groups.])
2806 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2807 gcc_cv_as_discriminator,
2811 .loc 1 1 0 discriminator 1],,
2812 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2813 [Define if your assembler supports the .loc discriminator sub-directive.])])
2815 # Thread-local storage - the check is heavily parameterized.
2824 .section ".tdata","awT",@progbits
2827 ldq $27,__tls_get_addr($29) !literal!1
2828 lda $16,foo($29) !tlsgd!1
2829 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2830 ldq $27,__tls_get_addr($29) !literal!2
2831 lda $16,foo($29) !tlsldm!2
2832 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2833 ldq $1,foo($29) !gotdtprel
2834 ldah $2,foo($29) !dtprelhi
2835 lda $3,foo($2) !dtprello
2836 lda $4,foo($29) !dtprel
2837 ldq $1,foo($29) !gottprel
2838 ldah $2,foo($29) !tprelhi
2839 lda $3,foo($2) !tprello
2840 lda $4,foo($29) !tprel'
2843 tls_as_opt=--fatal-warnings
2845 cris-*-*|crisv32-*-*)
2847 .section ".tdata","awT",@progbits
2854 tls_as_opt=--fatal-warnings
2858 .section ".tdata","awT",@progbits
2870 .section ".tdata","awT",@progbits
2874 addil LT%foo-$tls_gdidx$,gp
2875 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2878 addil LT%foo-$tls_ldidx$,gp
2880 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2881 addil LR%foo-$tls_dtpoff$,%ret0
2882 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2884 addil LT%foo-$tls_ieoff$,gp
2885 ldw RT%foo-$tls_ieoff$(%r1),%t2
2888 addil LR%foo-$tls_leoff$,%t1
2889 ldo RR%foo-$tls_leoff$(%r1),%t2'
2892 tls_as_opt=--fatal-warnings
2896 .section ".tdata","awT",%progbits
2907 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2909 i[34567]86-*-solaris2.*)
2911 tga_func=___tls_get_addr
2913 x86_64-*-solaris2.1[0-9]*)
2915 tga_func=__tls_get_addr
2921 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2923 .section .tdata,"awt",@progbits'
2927 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2928 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2932 .section ".tdata","awT",@progbits'
2935 tls_as_opt="--fatal-warnings"
2937 conftest_s="$conftest_s
2941 leal foo@tlsgd(,%ebx,1), %eax
2942 leal foo@tlsldm(%ebx), %eax
2943 leal foo@dtpoff(%eax), %edx
2944 movl foo@gottpoff(%ebx), %eax
2945 subl foo@gottpoff(%ebx), %eax
2946 addl foo@gotntpoff(%ebx), %eax
2947 movl foo@indntpoff, %eax
2948 movl \$foo@tpoff, %eax
2949 subl \$foo@tpoff, %eax
2950 leal foo@ntpoff(%ecx), %eax"
2954 .section ".tdata","awT",@progbits
2958 leaq foo@TLSGD(%rip), %rdi
2959 leaq foo@TLSLD(%rip), %rdi
2960 leaq foo@DTPOFF(%rax), %rdx
2961 movq foo@GOTTPOFF(%rip), %rax
2962 movq $foo@TPOFF, %rax'
2965 tls_as_opt=--fatal-warnings
2969 .section ".tdata","awT",@progbits
2972 addl r16 = @ltoff(@dtpmod(foo#)), gp
2973 addl r17 = @ltoff(@dtprel(foo#)), gp
2974 addl r18 = @ltoff(@tprel(foo#)), gp
2975 addl r19 = @dtprel(foo#), gp
2976 adds r21 = @dtprel(foo#), r13
2977 movl r23 = @dtprel(foo#)
2978 addl r20 = @tprel(foo#), gp
2979 adds r22 = @tprel(foo#), r13
2980 movl r24 = @tprel(foo#)'
2983 tls_as_opt=--fatal-warnings
2987 .section .tdata,"awT",@progbits
2991 addik r5,r20,x@TLSGD
2992 addik r5,r20,x@TLSLDM'
2995 tls_as_opt='--fatal-warnings'
2999 .section .tdata,"awT",@progbits
3003 addiu $4, $28, %tlsgd(x)
3004 addiu $4, $28, %tlsldm(x)
3005 lui $4, %dtprel_hi(x)
3006 addiu $4, $4, %dtprel_lo(x)
3007 lw $4, %gottprel(x)($28)
3008 lui $4, %tprel_hi(x)
3009 addiu $4, $4, %tprel_lo(x)'
3012 tls_as_opt='-32 --fatal-warnings'
3016 .section .tdata,"awT",@progbits
3021 move.l x@TLSGD(%a5),%a0
3022 move.l x@TLSLDM(%a5),%a0
3023 move.l x@TLSLDO(%a5),%a0
3024 move.l x@TLSIE(%a5),%a0
3025 move.l x@TLSLE(%a5),%a0'
3028 tls_as_opt='--fatal-warnings'
3032 .section ".tdata","awT",%progbits
3036 add x0, x0, #:tlsgd_lo12:x
3041 tls_as_opt='--fatal-warnings'
3045 .extern __get_tpointer
3063 .section ".tdata","awT",@progbits
3071 addi 3,2,ld0@got@tlsgd
3077 addi 3,2,x1@got@tlsld
3083 addis 9,3,x2@dtprel@ha
3084 addi 9,9,x2@dtprel@l
3087 ld 9,x3@got@dtprel(2)
3093 tls_as_opt="-a64 --fatal-warnings"
3097 .section ".tdata","awT",@progbits
3105 addi 3,31,ld0@got@tlsgd
3107 addi 3,31,x1@got@tlsld
3110 addis 9,3,x2@dtprel@ha
3111 addi 9,9,x2@dtprel@l
3112 lwz 9,x3@got@tprel(31)
3115 addis 9,2,x2@tprel@ha
3116 addi 9,9,x2@tprel@l'
3119 tls_as_opt="-a32 --fatal-warnings"
3123 .section ".tdata","awT",@progbits
3132 l %r1,foo@GOTNTPOFF(%r12)
3133 l %r1,0(%r1):tls_load:foo
3134 bas %r14,0(%r1,%r13):tls_gdcall:foo
3135 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3138 tls_as_opt="-m31 --fatal-warnings"
3142 .section ".tdata","awT",@progbits
3150 lg %r1,foo@GOTNTPOFF(%r12)
3151 larl %r1,foo@INDNTPOFF
3152 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3153 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3156 tls_as_opt="-m64 -Aesame --fatal-warnings"
3158 sh-*-* | sh[34]-*-*)
3160 .section ".tdata","awT",@progbits
3170 tls_as_opt=--fatal-warnings
3174 sparc*-sun-solaris2.*)
3176 tga_func=__tls_get_addr
3182 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3184 .section ".tdata",#alloc,#write,#tls'
3189 .section ".tdata","awT",@progbits'
3192 tls_as_opt="-32 --fatal-warnings"
3194 conftest_s="$conftest_s
3197 sethi %tgd_hi22(foo), %o0
3198 add %o0, %tgd_lo10(foo), %o1
3199 add %l7, %o1, %o0, %tgd_add(foo)
3200 call __tls_get_addr, %tgd_call(foo)
3201 sethi %tldm_hi22(foo), %l1
3202 add %l1, %tldm_lo10(foo), %l2
3203 add %l7, %l2, %o0, %tldm_add(foo)
3204 call __tls_get_addr, %tldm_call(foo)
3205 sethi %tldo_hix22(foo), %l3
3206 xor %l3, %tldo_lox10(foo), %l4
3207 add %o0, %l4, %l5, %tldo_add(foo)
3208 sethi %tie_hi22(foo), %o3
3209 add %o3, %tie_lo10(foo), %o3
3210 ld [%l7 + %o3], %o2, %tie_ld(foo)
3211 add %g7, %o2, %o4, %tie_add(foo)
3212 sethi %tle_hix22(foo), %l1
3213 xor %l1, %tle_lox10(foo), %o5
3214 ld [%g7 + %o5], %o1"
3218 .section ".tdata","awT",@progbits
3221 addli r0, zero, tls_gd(foo)
3222 auli r0, zero, tls_gd_ha16(foo)
3223 addli r0, r0, tls_gd_lo16(foo)
3225 addli r0, zero, tls_ie(foo)
3226 auli r0, r0, tls_ie_ha16(foo)
3227 addli r0, r0, tls_ie_lo16(foo)'
3230 tls_as_opt="--fatal-warnings"
3234 .section ".tdata","awT",@progbits
3237 shl16insli r0, zero, hw0_last_tls_gd(foo)
3238 shl16insli r0, zero, hw1_last_tls_gd(foo)
3239 shl16insli r0, r0, hw0_tls_gd(foo)
3241 shl16insli r0, zero, hw1_last_tls_ie(foo)
3242 shl16insli r0, r0, hw0_tls_ie(foo)'
3245 tls_as_opt="--fatal-warnings"
3249 .section ".tdata","awT",@progbits
3252 movi a8, foo@TLSFUNC
3253 movi a10, foo@TLSARG
3254 callx8.tls a8, foo@TLSCALL'
3261 if test "x$enable_tls" = xno ; then
3262 : # TLS explicitly disabled.
3263 elif test "x$enable_tls" = xyes ; then
3264 set_have_as_tls=yes # TLS explicitly enabled.
3265 elif test -z "$tls_first_major"; then
3266 : # If we don't have a check, assume no support.
3268 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3269 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3270 [set_have_as_tls=yes])
3273 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3274 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3275 # Sun style that Sun ld and GCC don't support any longer.
3277 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3279 # Check ld and ld.so.1 TLS support.
3280 if echo "$ld_ver" | grep GNU > /dev/null; then
3281 # Assume all interesting versions of GNU ld have TLS support.
3282 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3286 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3288 min_tls_ld_vers_minor=374
3290 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3291 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3292 min_tls_ld_vers_minor=343
3295 if test "$ld_vers_major" -gt 1 || \
3296 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3302 AC_MSG_RESULT($ld_tls_support)
3305 save_LDFLAGS="$LDFLAGS"
3309 AC_MSG_CHECKING(library containing $tga_func)
3310 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3311 # (32-bit x86) only lived in libthread, so check for that. Keep
3312 # set_have_as_tls if found, disable if not.
3313 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3314 # Clear LIBS if we cannot support TLS.
3315 if test $set_have_as_tls = no; then
3318 # Always define LIB_TLS_SPEC, even without TLS support.
3319 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3320 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3321 AC_MSG_RESULT($LIBS)
3324 LDFLAGS="$save_LDFLAGS"
3327 if test $set_have_as_tls = yes ; then
3328 AC_DEFINE(HAVE_AS_TLS, 1,
3329 [Define if your assembler and linker support thread-local storage.])
3332 # Target-specific assembler checks.
3334 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3335 gcc_cv_ld_static_dynamic=no
3336 gcc_cv_ld_static_option='-Bstatic'
3337 gcc_cv_ld_dynamic_option='-Bdynamic'
3338 if test $in_tree_ld = yes ; then
3339 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3340 gcc_cv_ld_static_dynamic=yes
3342 elif test x$gcc_cv_ld != x; then
3343 # Check if linker supports -Bstatic/-Bdynamic option
3344 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3345 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3346 gcc_cv_ld_static_dynamic=yes
3349 # AIX ld uses -b flags
3350 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3351 gcc_cv_ld_static_dynamic=yes
3352 gcc_cv_ld_static_option="-bstatic"
3353 gcc_cv_ld_dynamic_option="-bdynamic"
3355 # HP-UX ld uses -a flags to select between shared and archive.
3357 if test x"$gnu_ld" = xno; then
3358 gcc_cv_ld_static_dynamic=yes
3359 gcc_cv_ld_static_option="-aarchive_shared"
3360 gcc_cv_ld_dynamic_option="-adefault"
3363 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3365 gcc_cv_ld_static_dynamic=yes
3370 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3371 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3372 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3373 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3374 [Define to the linker option to disable use of shared objects.])
3375 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3376 [Define to the linker option to enable use of shared objects.])
3378 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3380 if test x"$demangler_in_ld" = xyes; then
3381 AC_MSG_CHECKING(linker --demangle support)
3382 gcc_cv_ld_demangle=no
3383 if test $in_tree_ld = yes; then
3384 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3385 gcc_cv_ld_demangle=yes
3387 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3388 # Check if the GNU linker supports --demangle option
3389 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3390 gcc_cv_ld_demangle=yes
3393 if test x"$gcc_cv_ld_demangle" = xyes; then
3394 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3395 [Define if your linker supports --demangle option.])
3397 AC_MSG_RESULT($gcc_cv_ld_demangle)
3400 AC_MSG_CHECKING(linker plugin support)
3402 if test -f liblto_plugin.la; then
3403 save_ld_ver="$ld_ver"
3404 save_ld_vers_major="$ld_vers_major"
3405 save_ld_vers_minor="$ld_vers_minor"
3406 save_ld_is_gold="$ld_is_gold"
3410 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3412 # FIXME: ld_is_gold?
3413 ld_vers_major="$gcc_cv_gld_major_version"
3414 ld_vers_minor="$gcc_cv_gld_minor_version"
3416 # Determine plugin linker version.
3417 # FIXME: Partial duplicate from above, generalize.
3419 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3420 if echo "$ld_ver" | grep GNU > /dev/null; then
3421 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3423 ld_vers=`echo $ld_ver | sed -n \
3424 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3426 ld_vers=`echo $ld_ver | sed -n \
3427 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3429 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3430 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3435 # Determine plugin support.
3436 if echo "$ld_ver" | grep GNU > /dev/null; then
3437 # Require GNU ld or gold 2.21+ for plugin support by default.
3438 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3440 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3441 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3446 ld_ver="$save_ld_ver"
3447 ld_vers_major="$save_ld_vers_major"
3448 ld_vers_minor="$save_ld_vers_minor"
3449 ld_is_gold="$save_ld_is_gold"
3451 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3452 [Define to the level of your linker's plugin support.])
3453 AC_MSG_RESULT($gcc_cv_lto_plugin)
3456 # All TARGET_ABI_OSF targets.
3457 alpha*-*-linux* | alpha*-*-*bsd*)
3458 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3459 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3462 extbl $3, $2, $3 !lituse_bytoff!1
3463 ldq $2, a($29) !literal!1
3464 ldq $4, b($29) !literal!2
3465 ldq_u $3, 0($2) !lituse_base!1
3466 ldq $27, f($29) !literal!5
3467 jsr $26, ($27), f !lituse_jsr!5
3468 ldah $29, 0($26) !gpdisp!3
3469 lda $0, c($29) !gprel
3470 ldah $1, d($29) !gprelhigh
3471 lda $1, d($1) !gprellow
3472 lda $29, 0($29) !gpdisp!3],,
3473 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3474 [Define if your assembler supports explicit relocations.])])
3475 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3476 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3479 ldq $27, a($29) !literal!1
3480 jsr $26, ($27), a !lituse_jsrdirect!1],,
3481 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3482 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3486 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3487 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3488 [-no-mul-bug-abort], [.text],,
3489 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3490 [Define if your assembler supports the -no-mul-bug-abort option.])])
3494 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3495 [.register %g2, #scratch],,
3496 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3497 [Define if your assembler supports .register.])])
3499 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3500 [.section "nobits",#alloc,#write,#nobits
3501 .section "progbits",#alloc,#write,#progbits])
3502 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3503 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3504 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3506 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3508 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3509 [Define if your assembler supports -relax option.])])
3511 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3512 gcc_cv_as_sparc_gotdata_op,,
3519 sethi %gdop_hix22(foo), %g1
3520 xor %g1, %gdop_lox10(foo), %g1
3521 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3522 [if test x$gcc_cv_ld != x \
3523 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3524 if test x$gcc_cv_objdump != x; then
3525 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3526 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3527 gcc_cv_as_sparc_gotdata_op=no
3529 gcc_cv_as_sparc_gotdata_op=yes
3534 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3535 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3537 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3538 gcc_cv_as_sparc_ua_pcrel,,
3546 .uaword %r_disp32(foo)],
3547 [if test x$gcc_cv_ld != x \
3548 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3549 gcc_cv_as_sparc_ua_pcrel=yes
3552 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3553 [Define if your assembler and linker support unaligned PC relative relocs.])
3555 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3556 gcc_cv_as_sparc_ua_pcrel_hidden,,
3561 .uaword %r_disp32(foo)
3562 .byte 0x32, 0x33, 0x34
3567 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3568 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3569 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3570 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3571 if $gcc_cv_objdump -R conftest 2> /dev/null \
3572 | grep 'DISP32' > /dev/null 2>&1; then
3575 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3579 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3580 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3581 ]) # unaligned pcrel relocs
3583 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3584 gcc_cv_as_sparc_offsetable_lo10,,
3587 or %g1, %lo(ab) + 12, %g1
3588 or %g1, %lo(ab + 12), %g1],
3589 [if test x$gcc_cv_objdump != x \
3590 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3591 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3592 gcc_cv_as_sparc_offsetable_lo10=yes
3594 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3595 [Define if your assembler supports offsetable %lo().])])
3597 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3598 gcc_cv_as_sparc_fmaf,,
3601 .register %g2, #scratch
3602 .register %g3, #scratch
3604 fmaddd %f0, %f2, %f4, %f6
3605 addxccc %g1, %g2, %g3
3606 fsrl32 %f2, %f4, %f8
3607 fnaddd %f10, %f12, %f14],,
3608 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3609 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3611 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3612 gcc_cv_as_sparc_sparc4,,
3615 .register %g2, #scratch
3616 .register %g3, #scratch
3619 1: cwbneg %g2, %g3, 1f
3622 aes_kexpand0 %f4, %f6, %f8
3623 des_round %f38, %f40, %f42, %f44
3624 camellia_f %f54, %f56, %f58, %f60
3625 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3626 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3627 [Define if your assembler supports SPARC4 instructions.])])
3629 gcc_GAS_CHECK_FEATURE([LEON instructions],
3630 gcc_cv_as_sparc_leon,,
3633 .register %g2, #scratch
3634 .register %g3, #scratch
3638 cas [[%g2]], %g3, %g1],,
3639 [AC_DEFINE(HAVE_AS_LEON, 1,
3640 [Define if your assembler supports LEON instructions.])])
3644 i[34567]86-*-* | x86_64-*-*)
3648 # Full C++ conformance when using a shared libstdc++-v3 requires some
3649 # support from the Cygwin DLL, which in more recent versions exports
3650 # wrappers to aid in interposing and redirecting operators new, delete,
3651 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3652 # are configuring for a version of Cygwin that exports the wrappers.
3653 if test x$host = x$target && test x$host_cpu = xi686; then
3654 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3656 # Can't check presence of libc functions during cross-compile, so
3657 # we just have to assume we're building for an up-to-date target.
3658 gcc_ac_cygwin_dll_wrappers=yes
3660 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3661 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3662 [Define if you want to generate code by default that assumes that the
3663 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3666 cygwin* | pe | mingw32* | interix*)
3667 # Recent binutils allows the three-operand form of ".comm" on PE. This
3668 # definition is used unconditionally to initialise the default state of
3669 # the target option variable that governs usage of the feature.
3670 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3671 [2,19,52],,[.comm foo,1,32])
3672 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3673 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3674 [Define if your assembler supports specifying the alignment
3675 of objects allocated using the GAS .comm command.])
3676 # Used for DWARF 2 in PE
3677 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3678 gcc_cv_as_ix86_pe_secrel32,
3684 [if test x$gcc_cv_ld != x \
3685 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3686 gcc_cv_as_ix86_pe_secrel32=yes
3689 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3690 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3691 # Test if the assembler supports the extended form of the .section
3692 # directive that specifies section alignment. LTO support uses this,
3693 # but normally only after installation, so we warn but don't fail the
3694 # configure if LTO is enabled but the assembler does not support it.
3695 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3696 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3697 if test x$gcc_cv_as_section_has_align != xyes; then
3698 case ",$enable_languages," in
3700 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3704 # Test if the assembler supports the section flag 'e' for specifying
3705 # an excluded section.
3706 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3710 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3711 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3712 [Define if your assembler supports specifying the section flag e.])
3716 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3717 gcc_cv_as_ix86_filds,,,
3718 [filds mem; fists mem],,
3719 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3720 [Define if your assembler uses filds and fists mnemonics.])])
3722 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3723 gcc_cv_as_ix86_fildq,,,
3724 [fildq mem; fistpq mem],,
3725 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3726 [Define if your assembler uses fildq and fistq mnemonics.])])
3728 gcc_GAS_CHECK_FEATURE([cmov syntax],
3729 gcc_cv_as_ix86_cmov_sun_syntax,,,
3730 [cmovl.l %edx, %eax],,
3731 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3732 [Define if your assembler supports the Sun syntax for cmov.])])
3734 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3735 gcc_cv_as_ix86_ffreep,,,
3737 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3738 [Define if your assembler supports the ffreep mnemonic.])])
3740 gcc_GAS_CHECK_FEATURE([.quad directive],
3741 gcc_cv_as_ix86_quad,,,
3743 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3744 [Define if your assembler supports the .quad directive.])])
3746 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3747 gcc_cv_as_ix86_sahf,,,
3750 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3751 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3753 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3754 gcc_cv_as_ix86_interunit_movq,,,
3758 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3759 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3760 [Define if your assembler supports interunit movq mnemonic.])
3762 gcc_GAS_CHECK_FEATURE([hle prefixes],
3763 gcc_cv_as_ix86_hle,,,
3764 [lock xacquire cmpxchg %esi, (%ecx)],,
3765 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3766 [Define if your assembler supports HLE prefixes.])])
3768 gcc_GAS_CHECK_FEATURE([swap suffix],
3769 gcc_cv_as_ix86_swap,,,
3770 [movl.s %esp, %ebp],,
3771 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3772 [Define if your assembler supports the swap suffix.])])
3774 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3775 gcc_cv_as_ix86_diff_sect_delta,,,
3783 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3784 [Define if your assembler supports the subtraction of symbols in different sections.])])
3786 # These two are used unconditionally by i386.[ch]; it is to be defined
3787 # to 1 if the feature is present, 0 otherwise.
3788 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3789 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3795 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3796 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3797 [Define true if the assembler supports '.long foo@GOTOFF'.])
3799 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3800 gcc_cv_as_ix86_rep_lock_prefix,,,
3806 lock addl %edi, (%eax,%esi)
3807 lock orl $0, (%esp)],,
3808 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3809 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3811 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3812 gcc_cv_as_ix86_tlsgdplt,,,
3813 [call tls_gd@tlsgdplt],
3814 [if test x$gcc_cv_ld != x \
3815 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3816 gcc_cv_as_ix86_tlsgdplt=yes
3819 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3820 [Define if your assembler and linker support @tlsgdplt.])])
3822 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3823 gcc_cv_as_ix86_tlsldmplt,,,
3825 call tls_ld@tlsldmplt],
3826 [if test x$gcc_cv_ld != x \
3827 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3828 gcc_cv_as_ix86_tlsldmplt=yes
3831 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3832 [Define if your assembler and linker support @tlsldmplt.])])
3837 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3838 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3840 addl r15 = @ltoffx(x#), gp
3842 ld8.mov r16 = [[r15]], x#],,
3843 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3844 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3850 *-*-aix*) conftest_s=' .machine "pwr5"
3854 gcc_GAS_CHECK_FEATURE([.machine directive support],
3855 gcc_cv_as_machine_directive,,,
3856 [ .machine ppc7400])
3857 if test x$gcc_cv_as_machine_directive != xyes; then
3858 echo "*** This target requires an assembler supporting \".machine\"" >&2
3859 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3860 test x$build = x$target && exit 1
3864 *) conftest_s=' .machine power4
3869 gcc_GAS_CHECK_FEATURE([mfcr field support],
3870 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3872 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3873 [Define if your assembler supports mfcr field.])])
3876 *-*-aix*) conftest_s=' .machine "pwr5"
3879 *) conftest_s=' .machine power5
3884 gcc_GAS_CHECK_FEATURE([popcntb support],
3885 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3887 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3888 [Define if your assembler supports popcntb field.])])
3891 *-*-aix*) conftest_s=' .machine "pwr5x"
3894 *) conftest_s=' .machine power5
3899 gcc_GAS_CHECK_FEATURE([fp round support],
3900 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3902 [AC_DEFINE(HAVE_AS_FPRND, 1,
3903 [Define if your assembler supports fprnd.])])
3906 *-*-aix*) conftest_s=' .machine "pwr6"
3909 *) conftest_s=' .machine power6
3914 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3915 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3917 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3918 [Define if your assembler supports mffgpr and mftgpr.])])
3921 *-*-aix*) conftest_s=' .csect .text[[PR]]
3923 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3927 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3928 *) conftest_s=' .text
3930 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3933 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3934 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3936 [AC_DEFINE(HAVE_AS_REL16, 1,
3937 [Define if your assembler supports R_PPC_REL16 relocs.])])
3940 *-*-aix*) conftest_s=' .machine "pwr6"
3943 *) conftest_s=' .machine power6
3948 gcc_GAS_CHECK_FEATURE([compare bytes support],
3949 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3951 [AC_DEFINE(HAVE_AS_CMPB, 1,
3952 [Define if your assembler supports cmpb.])])
3955 *-*-aix*) conftest_s=' .machine "pwr6"
3958 *) conftest_s=' .machine power6
3963 gcc_GAS_CHECK_FEATURE([decimal float support],
3964 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3966 [AC_DEFINE(HAVE_AS_DFP, 1,
3967 [Define if your assembler supports DFP instructions.])])
3970 *-*-aix*) conftest_s=' .machine "pwr7"
3973 *) conftest_s=' .machine power7
3978 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3979 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3981 [AC_DEFINE(HAVE_AS_VSX, 1,
3982 [Define if your assembler supports VSX instructions.])])
3985 *-*-aix*) conftest_s=' .machine "pwr7"
3988 *) conftest_s=' .machine power7
3993 gcc_GAS_CHECK_FEATURE([popcntd support],
3994 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3996 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3997 [Define if your assembler supports POPCNTD instructions.])])
4000 *-*-aix*) conftest_s=' .machine "pwr8"
4001 .csect .text[[PR]]';;
4002 *) conftest_s=' .machine power8
4006 gcc_GAS_CHECK_FEATURE([power8 support],
4007 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4009 [AC_DEFINE(HAVE_AS_POWER8, 1,
4010 [Define if your assembler supports POWER8 instructions.])])
4013 *-*-aix*) conftest_s=' .csect .text[[PR]]
4015 *) conftest_s=' .text
4019 gcc_GAS_CHECK_FEATURE([lwsync support],
4020 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4022 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4023 [Define if your assembler supports LWSYNC instructions.])])
4026 *-*-aix*) conftest_s=' .machine "476"
4029 *) conftest_s=' .machine "476"
4034 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4035 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4037 [AC_DEFINE(HAVE_AS_DCI, 1,
4038 [Define if your assembler supports the DCI/ICI instructions.])])
4040 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4041 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4042 [.gnu_attribute 4,1],,
4043 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4044 [Define if your assembler supports .gnu_attribute.])])
4046 gcc_GAS_CHECK_FEATURE([tls marker support],
4047 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4048 [ bl __tls_get_addr(x@tlsgd)],,
4049 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4050 [Define if your assembler supports arg info for __tls_get_addr.])])
4054 gcc_GAS_CHECK_FEATURE([.ref support],
4055 gcc_cv_as_aix_ref, [2,21,0],,
4056 [ .csect stuff[[rw]]
4062 [AC_DEFINE(HAVE_AS_REF, 1,
4063 [Define if your assembler supports .ref])])
4069 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4070 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4071 [ lw $4,%gp_rel(foo)($4)],,
4072 [if test x$target_cpu_default = x
4073 then target_cpu_default=MASK_EXPLICIT_RELOCS
4074 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4076 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4077 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4078 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4079 [Define if the assembler understands -mno-shared.])])
4081 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4082 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4083 [.gnu_attribute 4,1],,
4084 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4085 [Define if your assembler supports .gnu_attribute.])])
4087 gcc_GAS_CHECK_FEATURE([.micromips support],
4088 gcc_cv_as_micromips_support,,[--fatal-warnings],
4090 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4091 [Define if your assembler supports the .set micromips directive])])
4093 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4094 gcc_cv_as_mips_dtprelword, [2,18,0],,
4095 [.section .tdata,"awT",@progbits
4099 .dtprelword x+0x8000],,
4100 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4101 [Define if your assembler supports .dtprelword.])])
4103 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4104 gcc_cv_as_mips_dspr1_mult,,,
4114 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4115 [Define if your assembler supports DSPR1 mult.])])
4117 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4118 gcc_cv_as_ld_jalr_reloc=no
4119 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4120 if test $in_tree_ld = yes ; then
4121 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4122 && test $in_tree_ld_is_elf = yes; then
4123 gcc_cv_as_ld_jalr_reloc=yes
4125 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4126 echo ' .ent x' > conftest.s
4127 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4128 echo ' ld $25,%call16(y)($28)' >> conftest.s
4129 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4130 echo '1: jalr $25' >> conftest.s
4131 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4132 echo '1: jalr $25' >> conftest.s
4133 echo ' .end x' >> conftest.s
4134 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4135 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4136 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4137 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4138 gcc_cv_as_ld_jalr_reloc=yes
4144 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4145 if test x$target_cpu_default = x; then
4146 target_cpu_default=MASK_RELAX_PIC_CALLS
4148 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4151 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4153 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4154 [gcc_cv_ld_mips_personality_relaxation],
4155 [gcc_cv_ld_mips_personality_relaxation=no
4156 if test $in_tree_ld = yes ; then
4157 if test "$gcc_cv_gld_major_version" -eq 2 \
4158 -a "$gcc_cv_gld_minor_version" -ge 21 \
4159 -o "$gcc_cv_gld_major_version" -gt 2; then
4160 gcc_cv_ld_mips_personality_relaxation=yes
4162 elif test x$gcc_cv_as != x \
4163 -a x$gcc_cv_ld != x \
4164 -a x$gcc_cv_readelf != x ; then
4165 cat > conftest.s <<EOF
4167 .cfi_personality 0x80,indirect_ptr
4174 .section .data,"aw",@progbits
4178 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4179 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4180 if $gcc_cv_readelf -d conftest 2>&1 \
4181 | grep TEXTREL > /dev/null 2>&1; then
4183 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4184 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4187 gcc_cv_ld_mips_personality_relaxation=yes
4191 rm -f conftest.s conftest.o conftest])
4192 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4193 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4194 [Define if your linker can relax absolute .eh_frame personality
4195 pointers into PC-relative form.])
4198 gcc_GAS_CHECK_FEATURE([-mnan= support],
4199 gcc_cv_as_mips_nan,,
4201 [AC_DEFINE(HAVE_AS_NAN, 1,
4202 [Define if the assembler understands -mnan=.])])
4203 if test x$gcc_cv_as_mips_nan = xno \
4204 && test x$with_nan != x; then
4206 [Requesting --with-nan= requires assembler support for -mnan=])
4211 # Mips and HP-UX need the GNU assembler.
4212 # Linux on IA64 might be able to use the Intel assembler.
4215 mips*-*-* | *-*-hpux* )
4216 if test x$gas_flag = xyes \
4217 || test x"$host" != x"$build" \
4218 || test ! -x "$gcc_cv_as" \
4219 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4222 echo "*** This configuration requires the GNU assembler" >&2
4228 # ??? Not all targets support dwarf2 debug_line, even within a version
4229 # of gas. Moreover, we need to emit a valid instruction to trigger any
4230 # info to the output file. So, as supported targets are added to gas 2.11,
4231 # add some instruction here to (also) show we expect this might work.
4232 # ??? Once 2.11 is released, probably need to add first known working
4233 # version to the per-target configury.
4235 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4236 | mips | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 \
4247 if test x"$insn" != x; then
4249 .file 1 \"conftest.s\"
4252 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4253 gcc_cv_as_dwarf2_debug_line,
4254 [elf,2,11,0],, [$conftest_s],
4255 [if test x$gcc_cv_objdump != x \
4256 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4257 | grep debug_line > /dev/null 2>&1; then
4258 gcc_cv_as_dwarf2_debug_line=yes
4261 # The .debug_line file table must be in the exact order that
4262 # we specified the files, since these indices are also used
4263 # by DW_AT_decl_file. Approximate this test by testing if
4264 # the assembler bitches if the same index is assigned twice.
4265 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4266 gcc_cv_as_dwarf2_file_buggy,,,
4270 if test $gcc_cv_as_dwarf2_debug_line = yes \
4271 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4272 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4273 [Define if your assembler supports dwarf2 .file/.loc directives,
4274 and preserves file table indices exactly as given.])
4277 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4278 gcc_cv_as_gdwarf2_flag,
4279 [elf,2,11,0], [--gdwarf2], [$insn],,
4280 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4281 [Define if your assembler supports the --gdwarf2 option.])])
4283 gcc_GAS_CHECK_FEATURE([--gstabs option],
4284 gcc_cv_as_gstabs_flag,
4285 [elf,2,11,0], [--gstabs], [$insn],
4286 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4287 # and warns about it, but still exits successfully. So check for
4289 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4291 else gcc_cv_as_gstabs_flag=yes
4293 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4294 [Define if your assembler supports the --gstabs option.])])
4296 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4297 gcc_cv_as_debug_prefix_map_flag,
4298 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4299 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4300 [Define if your assembler supports the --debug-prefix-map option.])])
4303 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4306 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4307 [Define if your assembler supports .lcomm with an alignment field.])])
4309 if test x$with_sysroot = x && test x$host = x$target \
4310 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4311 && test "$prefix" != "NONE"; then
4312 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4313 [Define to PREFIX/include if cpp should also search that directory.])
4316 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4317 if test "x$with_headers" != x; then
4318 target_header_dir=$with_headers
4319 elif test "x$with_sysroot" = x; then
4320 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4321 elif test "x$with_build_sysroot" != "x"; then
4322 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4323 elif test "x$with_sysroot" = xyes; then
4324 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4326 target_header_dir="${with_sysroot}${native_system_header_dir}"
4329 target_header_dir=${native_system_header_dir}
4332 # Determine the version of glibc, if any, used on the target.
4333 AC_MSG_CHECKING([for target glibc version])
4334 AC_ARG_WITH([glibc-version],
4335 [AS_HELP_STRING([--with-glibc-version=M.N],
4336 [assume GCC used with glibc version M.N or later])], [
4337 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4338 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4339 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4341 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4343 glibc_version_major=0
4344 glibc_version_minor=0
4345 [if test -f $target_header_dir/features.h \
4346 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4347 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4348 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4349 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4351 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4353 AC_ARG_ENABLE(gnu-unique-object,
4354 [AS_HELP_STRING([--enable-gnu-unique-object],
4355 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4356 [case $enable_gnu_unique_object in
4358 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4359 Valid choices are 'yes' and 'no'.]) ;;
4361 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4363 [.type foo, '$target_type_format_char'gnu_unique_object],,
4364 # We need to unquote above to to use the definition from config.gcc.
4365 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4366 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4368 if test x$enable_gnu_unique_object = xyes; then
4369 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4370 [Define if your assembler supports @gnu_unique_object.])
4373 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4374 [gcc_cv_as_line_zero],
4375 [gcc_cv_as_line_zero=no
4376 if test $in_tree_gas = yes; then
4377 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4378 elif test "x$gcc_cv_as" != x; then
4379 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4380 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4381 test "x`cat conftest.out`" = x
4383 gcc_cv_as_line_zero=yes
4385 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4386 cat conftest.s >&AS_MESSAGE_LOG_FD
4387 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4388 cat conftest.out >&AS_MESSAGE_LOG_FD
4390 rm -f conftest.o conftest.s conftest.out
4392 if test "x$gcc_cv_as_line_zero" = xyes; then
4393 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4394 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4397 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4398 gcc_cv_ld_eh_frame_hdr=no
4399 if test $in_tree_ld = yes ; then
4400 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4401 && test $in_tree_ld_is_elf = yes; then
4402 gcc_cv_ld_eh_frame_hdr=yes
4404 elif test x$gcc_cv_ld != x; then
4405 if echo "$ld_ver" | grep GNU > /dev/null; then
4406 # Check if linker supports --eh-frame-hdr option
4407 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4408 gcc_cv_ld_eh_frame_hdr=yes
4413 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4414 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4415 gcc_cv_ld_eh_frame_hdr=yes
4421 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4422 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4423 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4424 [Define if your linker supports .eh_frame_hdr.])
4426 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4428 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4429 gcc_cv_ld_eh_frame_ciev3=no
4430 if test $in_tree_ld = yes ; then
4431 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4432 && test $in_tree_ld_is_elf = yes; then
4433 gcc_cv_ld_eh_frame_ciev3=yes
4435 elif test x$gcc_cv_ld != x; then
4436 if echo "$ld_ver" | grep GNU > /dev/null; then
4437 gcc_cv_ld_eh_frame_ciev3=yes
4438 if test 0"$ld_date" -lt 20040513; then
4439 if test -n "$ld_date"; then
4440 # If there was date string, but was earlier than 2004-05-13, fail
4441 gcc_cv_ld_eh_frame_ciev3=no
4442 elif test "$ld_vers_major" -lt 2; then
4443 gcc_cv_ld_eh_frame_ciev3=no
4444 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4445 gcc_cv_ld_eh_frame_ciev3=no
4451 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4452 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4453 gcc_cv_ld_eh_frame_ciev3=yes
4459 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4460 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4461 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4462 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4464 AC_MSG_CHECKING(linker position independent executable support)
4466 if test $in_tree_ld = yes ; then
4467 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4468 && test $in_tree_ld_is_elf = yes; then
4471 elif test x$gcc_cv_ld != x; then
4472 # Check if linker supports -pie option
4473 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4477 if test x"$gcc_cv_ld_pie" = xyes; then
4478 AC_DEFINE(HAVE_LD_PIE, 1,
4479 [Define if your linker supports -pie option.])
4481 AC_MSG_RESULT($gcc_cv_ld_pie)
4483 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4484 gcc_cv_ld_eh_gc_sections=no
4485 if test $in_tree_ld = yes ; then
4486 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4487 && test $in_tree_ld_is_elf = yes; then
4488 gcc_cv_ld_eh_gc_sections=yes
4490 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4491 cat > conftest.s <<EOF
4494 .type _start, @function
4497 .size _start, .-_start
4498 .section .text.foo,"ax",@progbits
4499 .type foo, @function
4503 .section .gcc_except_table.foo,"a",@progbits
4506 .section .eh_frame,"a",@progbits
4509 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4510 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4511 | grep "gc-sections option ignored" > /dev/null; then
4512 gcc_cv_ld_eh_gc_sections=no
4513 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4514 | grep gcc_except_table > /dev/null; then
4515 gcc_cv_ld_eh_gc_sections=yes
4516 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4517 if test x$gcc_cv_as_comdat_group != xyes; then
4518 gcc_cv_ld_eh_gc_sections=no
4519 cat > conftest.s <<EOF
4522 .type _start, @function
4525 .size _start, .-_start
4526 .section .gnu.linkonce.t.foo,"ax",@progbits
4527 .type foo, @function
4531 .section .gcc_except_table.foo,"a",@progbits
4534 .section .eh_frame,"a",@progbits
4537 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4538 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4539 | grep "gc-sections option ignored" > /dev/null; then
4540 gcc_cv_ld_eh_gc_sections=no
4541 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4542 | grep gcc_except_table > /dev/null; then
4543 gcc_cv_ld_eh_gc_sections=yes
4549 rm -f conftest.s conftest.o conftest
4553 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4554 gcc_cv_ld_eh_gc_sections=no
4557 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4558 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4559 [Define if your linker supports garbage collection of
4560 sections in presence of EH frames.])
4562 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4564 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4565 gcc_cv_ld_eh_gc_sections_bug=no
4566 if test $in_tree_ld = yes ; then
4567 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4568 && test $in_tree_ld_is_elf = yes; then
4569 gcc_cv_ld_eh_gc_sections_bug=yes
4571 elif test x$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
4572 gcc_cv_ld_eh_gc_sections_bug=yes
4573 cat > conftest.s <<EOF
4576 .type _start, @function
4579 .size _start, .-_start
4580 .section .text.startup.foo,"ax",@progbits
4581 .type foo, @function
4585 .section .gcc_except_table.foo,"a",@progbits
4588 .section .eh_frame,"a",@progbits
4591 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4592 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4593 | grep "gc-sections option ignored" > /dev/null; then
4595 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4596 | grep gcc_except_table > /dev/null; then
4597 gcc_cv_ld_eh_gc_sections_bug=no
4600 rm -f conftest.s conftest.o conftest
4602 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4603 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4604 [Define if your linker has buggy garbage collection of
4605 sections support when .text.startup.foo like sections are used.])
4607 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4613 AC_CACHE_CHECK(linker --as-needed support,
4614 gcc_cv_ld_as_needed,
4615 [gcc_cv_ld_as_needed=no
4616 gcc_cv_ld_as_needed_option='--as-needed'
4617 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4618 if test $in_tree_ld = yes ; then
4619 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4620 && test $in_tree_ld_is_elf = yes; then
4621 gcc_cv_ld_as_needed=yes
4623 elif test x$gcc_cv_ld != x; then
4624 # Check if linker supports --as-needed and --no-as-needed options
4625 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4626 gcc_cv_ld_as_needed=yes
4629 # Solaris 2 ld always supports -z ignore/-z record.
4631 gcc_cv_ld_as_needed=yes
4632 gcc_cv_ld_as_needed_option="-z ignore"
4633 gcc_cv_ld_no_as_needed_option="-z record"
4638 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4639 # dl_iterate_phdr, i.e. since Solaris 11.
4641 *-*-solaris2.1[[1-9]]*)
4643 i?86-*-* | x86_64-*-*)
4644 if echo "$ld_ver" | grep GNU > /dev/null; then
4645 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4646 gcc_cv_ld_as_needed=no
4652 gcc_cv_ld_as_needed=no
4656 if test x"$gcc_cv_ld_as_needed" = xyes; then
4657 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4658 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4659 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4660 [Define to the linker option to ignore unused dependencies.])
4661 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4662 [Define to the linker option to keep unused dependencies.])
4665 case "$target:$tm_file" in
4666 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4669 emul_name="-melf64lppc"
4672 emul_name="-melf64ppc"
4675 emul_name="-melf64ppc_fbsd"
4678 AC_CACHE_CHECK(linker support for omitting dot symbols,
4679 gcc_cv_ld_no_dot_syms,
4680 [gcc_cv_ld_no_dot_syms=no
4681 if test x"$ld_is_gold" = xyes; then
4682 gcc_cv_ld_no_dot_syms=yes
4683 elif test $in_tree_ld = yes ; then
4684 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4685 gcc_cv_ld_no_dot_syms=yes
4687 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4688 cat > conftest1.s <<EOF
4692 cat > conftest2.s <<EOF
4693 .section ".opd","aw"
4698 .quad .LEfoo,.TOC.@tocbase,0
4704 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4705 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4706 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4707 gcc_cv_ld_no_dot_syms=yes
4709 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4712 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4713 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4714 [Define if your PowerPC64 linker only needs function descriptor syms.])
4717 AC_CACHE_CHECK(linker large toc support,
4718 gcc_cv_ld_large_toc,
4719 [gcc_cv_ld_large_toc=no
4720 if test x"$ld_is_gold" = xyes; then
4721 gcc_cv_ld_large_toc=yes
4722 elif test $in_tree_ld = yes ; then
4723 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4724 gcc_cv_ld_large_toc=yes
4726 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4727 cat > conftest.s <<EOF
4728 .section ".tbss","awT",@nobits
4734 addis 9,13,ie0@got@tprel@ha
4735 ld 9,ie0@got@tprel@l(9)
4737 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4738 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4739 gcc_cv_ld_large_toc=yes
4741 rm -f conftest conftest.o conftest.s
4744 if test x"$gcc_cv_ld_large_toc" = xyes; then
4745 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4746 [Define if your PowerPC64 linker supports a large TOC.])
4753 AC_CACHE_CHECK(linker large toc support,
4754 gcc_cv_ld_large_toc,
4755 [gcc_cv_ld_large_toc=no
4756 if test x$gcc_cv_as != x ; then
4757 cat > conftest.s <<EOF
4767 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4768 gcc_cv_ld_large_toc=yes
4770 rm -f conftest conftest.o conftest.s
4773 if test x"$gcc_cv_ld_large_toc" = xyes; then
4774 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4775 [Define if your PowerPC64 linker supports a large TOC.])
4780 AC_CACHE_CHECK(linker --build-id support,
4782 [gcc_cv_ld_buildid=no
4783 if test $in_tree_ld = yes ; then
4784 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4785 "$gcc_cv_gld_minor_version" -ge 18 -o \
4786 "$gcc_cv_gld_major_version" -gt 2 \
4787 && test $in_tree_ld_is_elf = yes; then
4788 gcc_cv_ld_buildid=yes
4790 elif test x$gcc_cv_ld != x; then
4791 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4792 gcc_cv_ld_buildid=yes
4795 if test x"$gcc_cv_ld_buildid" = xyes; then
4796 AC_DEFINE(HAVE_LD_BUILDID, 1,
4797 [Define if your linker supports --build-id.])
4800 AC_ARG_ENABLE(linker-build-id,
4801 [AS_HELP_STRING([--enable-linker-build-id],
4802 [compiler will always pass --build-id to linker])],
4804 enable_linker_build_id=no)
4806 if test x"$enable_linker_build_id" = xyes; then
4807 if test x"$gcc_cv_ld_buildid" = xyes; then
4808 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4809 [Define if gcc should always pass --build-id to linker.])
4811 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4815 # In binutils 2.21, GNU ld gained support for new emulations fully
4816 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4817 AC_CACHE_CHECK(linker *_sol2 emulation support,
4818 gcc_cv_ld_sol2_emulation,
4819 [gcc_cv_ld_sol2_emulation=no
4820 if test $in_tree_ld = yes ; then
4821 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4822 "$gcc_cv_gld_minor_version" -ge 21 -o \
4823 "$gcc_cv_gld_major_version" -gt 2 \
4824 && test $in_tree_ld_is_elf = yes; then
4825 gcc_cv_ld_sol2_emulation=yes
4827 elif test x$gcc_cv_ld != x; then
4828 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4829 grep _sol2 > /dev/null; then
4830 gcc_cv_ld_sol2_emulation=yes
4833 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4834 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4835 [Define if your linker supports the *_sol2 emulations.])
4838 AC_CACHE_CHECK(linker --sysroot support,
4840 [gcc_cv_ld_sysroot=no
4841 if test $in_tree_ld = yes ; then
4842 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4843 gcc_cv_ld_sysroot=yes
4845 elif test x$gcc_cv_ld != x; then
4846 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4847 gcc_cv_ld_sysroot=yes
4850 if test x"$gcc_cv_ld_sysroot" = xyes; then
4851 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4852 [Define if your linker supports --sysroot.])
4855 # Test for stack protector support in target C library.
4856 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4857 gcc_cv_libc_provides_ssp,
4858 [gcc_cv_libc_provides_ssp=no
4860 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4861 # glibc 2.4 and later provides __stack_chk_fail and
4862 # either __stack_chk_guard, or TLS access to stack guard canary.
4863 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
4864 [if test -f $target_header_dir/features.h \
4865 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4866 $target_header_dir/features.h > /dev/null; then
4867 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4868 $target_header_dir/features.h > /dev/null && \
4869 test -f $target_header_dir/bits/uClibc_config.h && \
4870 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4871 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4872 gcc_cv_libc_provides_ssp=yes
4874 # all versions of Bionic support stack protector
4875 elif test -f $target_header_dir/sys/cdefs.h \
4876 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4877 $target_header_dir/sys/cdefs.h > /dev/null; then
4878 gcc_cv_libc_provides_ssp=yes
4882 # Avoid complicated tests (see
4883 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4884 # simply assert that glibc does provide this, which is true for all
4885 # realistically usable GNU/Hurd configurations.
4886 gcc_cv_libc_provides_ssp=yes;;
4887 *-*-darwin* | *-*-freebsd*)
4888 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4889 [echo "no __stack_chk_fail on this target"])
4891 *) gcc_cv_libc_provides_ssp=no ;;
4894 if test x$gcc_cv_libc_provides_ssp = xyes; then
4895 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4896 [Define if your target C library provides stack protector support])
4899 # Test for <sys/sdt.h> on the target.
4900 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4901 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4903 if test -f $target_header_dir/sys/sdt.h; then
4905 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4906 [Define if your target C library provides sys/sdt.h])
4908 AC_MSG_RESULT($have_sys_sdt_h)
4910 # Check if TFmode long double should be used by default or not.
4911 # Some glibc targets used DFmode long double, but with glibc 2.4
4912 # and later they can use TFmode.
4914 powerpc*-*-linux* | \
4918 AC_ARG_WITH(long-double-128,
4919 [AS_HELP_STRING([--with-long-double-128],
4920 [use 128-bit long double by default])],
4921 gcc_cv_target_ldbl128="$with_long_double_128",
4922 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
4923 [gcc_cv_target_ldbl128=no
4924 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4925 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4926 && gcc_cv_target_ldbl128=yes
4930 if test x$gcc_cv_target_ldbl128 = xyes; then
4931 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4932 [Define if TFmode long double should be the default])
4935 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4936 gcc_cv_target_dl_iterate_phdr=unknown
4938 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4939 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4940 # libdl there, both complicating its use and breaking compatibility
4941 # between Solaris 10 updates.
4942 *-*-solaris2.1[[1-9]]*)
4943 # <link.h> needs both a dl_iterate_phdr declaration and support for
4944 # compilation with largefile support.
4945 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4946 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4947 gcc_cv_target_dl_iterate_phdr=yes
4949 gcc_cv_target_dl_iterate_phdr=no
4953 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4954 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4955 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4956 [Define if your target C library provides the `dl_iterate_phdr' function.])
4958 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4960 # We no longer support different GC mechanisms. Emit an error if
4961 # the user configures with --with-gc.
4963 [AS_HELP_STRING([--with-gc={page,zone}],
4964 [this option is not supported anymore. It used to choose
4965 the garbage collection mechanism to use with the compiler])],
4966 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4969 # Libraries to use on the host. This will normally be set by the top
4970 # level Makefile. Here we simply capture the value for our Makefile.
4971 if test -z "${HOST_LIBS+set}"; then
4976 # Use the system's zlib library.
4978 zlibinc="-I\$(srcdir)/../zlib"
4979 AC_ARG_WITH(system-zlib,
4980 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4987 dnl Very limited version of automake's enable-maintainer-mode
4989 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4990 dnl maintainer-mode is disabled by default
4991 AC_ARG_ENABLE(maintainer-mode,
4992 [AS_HELP_STRING([--enable-maintainer-mode],
4993 [enable make rules and dependencies not useful
4994 (and sometimes confusing) to the casual installer])],
4995 maintainer_mode=$enableval,
4998 AC_MSG_RESULT($maintainer_mode)
5000 if test "$maintainer_mode" = "yes"; then
5007 dnl Whether to prevent multiple front-ends from linking at the same time
5009 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5010 AC_ARG_ENABLE(link-mutex,
5011 [AS_HELP_STRING([--enable-link-mutex],
5012 [avoid linking multiple front-ends at once to avoid thrashing
5013 on the build machine])],
5014 do_link_mutex=$enableval,
5016 AC_MSG_RESULT($do_link_mutex)
5018 if test "$do_link_mutex" = "yes"; then
5023 AC_SUBST(DO_LINK_MUTEX)
5029 # Make empty files to contain the specs and options for each language.
5030 # Then add #include lines to for a compiler that has specs and/or options.
5036 # These (without "all_") are set in each config-lang.in.
5037 # `language' must be a single word so is spelled singularly.
5040 all_outputs='Makefile'
5041 # List of language makefile fragments.
5043 # Additional files for gengtype
5044 all_gtfiles="$target_gtfiles"
5046 # These are the languages that are set in --enable-languages,
5047 # and are available in the GCC tree.
5048 all_selected_languages=
5050 # Add the language fragments.
5051 # Languages are added via two mechanisms. Some information must be
5052 # recorded in makefile variables, these are defined in config-lang.in.
5053 # We accumulate them and plug them into the main Makefile.
5054 # The other mechanism is a set of hooks for each of the main targets
5055 # like `clean', `install', etc.
5057 language_hooks="Make-hooks"
5059 for lang in ${srcdir}/*/config-lang.in
5062 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5064 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5065 if test "x$lang_alias" = x
5067 echo "$lang doesn't set \$language." 1>&2
5070 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5071 subdirs="$subdirs $subdir"
5073 # $gcc_subdir is where the gcc integration files are to be found
5074 # for a language, both for internal compiler purposes (compiler
5075 # sources implementing front-end to GCC tree converters), and for
5076 # build infrastructure purposes (Make-lang.in, etc.)
5078 # This will be <subdir> (relative to $srcdir) if a line like
5079 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5080 # is found in <langdir>/config-lang.in, and will remain <langdir>
5083 # Except for the language alias (fetched above), the regular
5084 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5085 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5086 # only this and the language alias.
5088 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5089 if [ "$gcc_subdir" = "" ]; then
5090 gcc_subdir="$subdir"
5093 case ",$enable_languages," in
5095 all_selected_languages="$all_selected_languages $lang_alias"
5096 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5097 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5109 . ${srcdir}/$gcc_subdir/config-lang.in
5110 if test "x$language" = x
5112 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5117 case ",$enable_languages," in
5120 for i in $subdir_requires; do
5121 test -f "${srcdir}/$i/config-lang.in" && continue
5129 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5130 if test -f $srcdir/$gcc_subdir/lang.opt; then
5131 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5132 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5134 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5135 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5137 all_languages="$all_languages $language"
5138 all_compilers="$all_compilers $compilers"
5139 all_outputs="$all_outputs $outputs"
5140 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5141 case ",$enable_languages," in
5143 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5145 AC_SUBST(enable_lto)
5152 for language in $all_selected_languages
5154 check_languages="$check_languages check-$language"
5157 # We link each language in with a set of hooks, reached indirectly via
5158 # lang.${target}. Only do so for selected languages.
5162 target_list="all.cross start.encap rest.encap tags \
5163 install-common install-man install-info install-pdf install-html dvi \
5164 pdf html uninstall info man srcextra srcman srcinfo \
5165 mostlyclean clean distclean maintainer-clean install-plugin"
5167 for t in $target_list
5170 for lang in $all_selected_languages
5174 echo "lang.$t: $x" >> Make-hooks
5178 # Option include files
5181 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5182 option_includes="option-includes.mk"
5183 AC_SUBST_FILE(option_includes)
5191 echo "dir ." > .gdbinit
5192 echo "dir ${srcdir}" >> .gdbinit
5193 if test x$gdb_needs_out_file_path = xyes
5195 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5197 if test "x$subdirs" != x; then
5200 echo "dir ${srcdir}/$s" >> .gdbinit
5203 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5204 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5206 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5207 AC_SUBST(gcc_tooldir)
5210 # Find a directory in which to install a shared libgcc.
5212 AC_ARG_ENABLE(version-specific-runtime-libs,
5213 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5214 [specify that runtime libraries should be
5215 installed in a compiler-specific directory])])
5217 # Substitute configuration variables
5220 AC_SUBST(all_compilers)
5221 AC_SUBST(all_gtfiles)
5222 AC_SUBST(all_lang_makefrags)
5223 AC_SUBST(all_languages)
5224 AC_SUBST(all_selected_languages)
5225 AC_SUBST(build_exeext)
5226 AC_SUBST(build_install_headers_dir)
5227 AC_SUBST(build_xm_file_list)
5228 AC_SUBST(build_xm_include_list)
5229 AC_SUBST(build_xm_defines)
5230 AC_SUBST(build_file_translate)
5231 AC_SUBST(check_languages)
5232 AC_SUBST(cpp_install_dir)
5233 AC_SUBST(xmake_file)
5234 AC_SUBST(tmake_file)
5235 AC_SUBST(TM_ENDIAN_CONFIG)
5236 AC_SUBST(TM_MULTILIB_CONFIG)
5237 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5238 AC_SUBST(extra_gcc_objs)
5239 AC_SUBST(user_headers_inc_next_pre)
5240 AC_SUBST(user_headers_inc_next_post)
5241 AC_SUBST(extra_headers_list)
5242 AC_SUBST(extra_objs)
5243 AC_SUBST(extra_programs)
5244 AC_SUBST(float_h_file)
5245 AC_SUBST(gcc_config_arguments)
5246 AC_SUBST(gcc_gxx_include_dir)
5247 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5248 AC_SUBST(host_exeext)
5249 AC_SUBST(host_xm_file_list)
5250 AC_SUBST(host_xm_include_list)
5251 AC_SUBST(host_xm_defines)
5252 AC_SUBST(out_host_hook_obj)
5254 AC_SUBST(lang_opt_files)
5255 AC_SUBST(lang_specs_files)
5256 AC_SUBST(lang_tree_files)
5257 AC_SUBST(local_prefix)
5259 AC_SUBST(objc_boehm_gc)
5261 AC_SUBST(out_object_file)
5262 AC_SUBST(common_out_file)
5263 AC_SUBST(common_out_object_file)
5264 AC_SUBST(tm_file_list)
5265 AC_SUBST(tm_include_list)
5266 AC_SUBST(tm_defines)
5267 AC_SUBST(tm_p_file_list)
5268 AC_SUBST(tm_p_include_list)
5269 AC_SUBST(xm_file_list)
5270 AC_SUBST(xm_include_list)
5271 AC_SUBST(xm_defines)
5272 AC_SUBST(use_gcc_stdint)
5273 AC_SUBST(c_target_objs)
5274 AC_SUBST(cxx_target_objs)
5275 AC_SUBST(fortran_target_objs)
5276 AC_SUBST(target_cpu_default)
5278 AC_SUBST_FILE(language_hooks)
5281 if test x${build} = x${host} ; then
5282 if test x${host} = x${target} ; then
5283 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5285 echo "Links are now set up to build a cross-compiler" 1>&2
5286 echo " from ${host} to ${target}." 1>&2
5289 if test x${host} = x${target} ; then
5290 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5291 echo " for ${target}." 1>&2
5293 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5294 echo " from ${host} to ${target}." 1>&2
5298 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5299 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5301 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5302 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5304 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5305 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5306 if test "x${CLOOGLIBS}" != "x" ; then
5307 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5310 # Check for plugin support
5311 AC_ARG_ENABLE(plugin,
5312 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5313 enable_plugin=$enableval,
5314 enable_plugin=yes; default_plugin=yes)
5320 if test x$build = x$host; then
5321 export_sym_check="nm${exeext} -g"
5322 elif test x$host = x$target; then
5323 export_sym_check="$gcc_cv_nm -g"
5329 if test x$build = x$host; then
5330 export_sym_check="objdump${exeext} -T"
5331 elif test x$host = x$target; then
5332 export_sym_check="$gcc_cv_objdump -T"
5339 if test x"$enable_plugin" = x"yes"; then
5341 AC_MSG_CHECKING([for exported symbols])
5342 if test "x$export_sym_check" != x; then
5343 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5344 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5345 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5346 : # No need to use a flag
5347 AC_MSG_RESULT([yes])
5349 AC_MSG_RESULT([yes])
5350 AC_MSG_CHECKING([for -rdynamic])
5351 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5352 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5354 pluginlibs="-rdynamic"
5359 AC_MSG_RESULT([$plugin_rdynamic])
5362 AC_MSG_RESULT([unable to check])
5367 AC_SEARCH_LIBS([dlopen], [dl])
5368 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5369 pluginlibs="$pluginlibs -ldl"
5373 # Check that we can build shared objects with -fPIC -shared
5374 saved_LDFLAGS="$LDFLAGS"
5375 saved_CFLAGS="$CFLAGS"
5378 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5379 CFLAGS="$CFLAGS -fPIC"
5380 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5383 CFLAGS="$CFLAGS -fPIC"
5384 LDFLAGS="$LDFLAGS -fPIC -shared"
5387 AC_MSG_CHECKING([for -fPIC -shared])
5389 [extern int X;],[return X == 0;],
5390 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5391 [AC_MSG_RESULT([no]); have_pic_shared=no])
5392 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5396 LDFLAGS="$saved_LDFLAGS"
5397 CFLAGS="$saved_CFLAGS"
5399 # If plugin support had been requested but not available, fail.
5400 if test x"$enable_plugin" = x"no" ; then
5401 if test x"$default_plugin" != x"yes"; then
5403 Building GCC with plugin support requires a host that supports
5404 -fPIC, -shared, -ldl and -rdynamic.])
5409 AC_SUBST(pluginlibs)
5410 AC_SUBST(enable_plugin)
5411 if test x"$enable_plugin" = x"yes"; then
5412 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5416 # Enable --enable-host-shared
5417 AC_ARG_ENABLE(host-shared,
5418 [AS_HELP_STRING([--enable-host-shared],
5419 [build host code as shared libraries])],
5420 [PICFLAG=-fPIC], [PICFLAG=])
5421 AC_SUBST(enable_host_shared)
5425 AC_ARG_ENABLE(libquadmath-support,
5426 [AS_HELP_STRING([--disable-libquadmath-support],
5427 [disable libquadmath support for Fortran])],
5428 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5429 ENABLE_LIBQUADMATH_SUPPORT=yes)
5430 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5431 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5432 [Define to 1 to enable libquadmath support])
5436 # Specify what hash style to use by default.
5437 AC_ARG_WITH([linker-hash-style],
5438 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5439 [specify the linker hash style])],
5440 [case x"$withval" in
5442 LINKER_HASH_STYLE=sysv
5445 LINKER_HASH_STYLE=gnu
5448 LINKER_HASH_STYLE=both
5451 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5454 [LINKER_HASH_STYLE=''])
5455 if test x"${LINKER_HASH_STYLE}" != x; then
5456 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5457 [The linker hash style])
5460 # Configure the subdirectories
5461 # AC_CONFIG_SUBDIRS($subdirs)
5463 # Create the Makefile
5464 # and configure language subdirectories
5465 AC_CONFIG_FILES($all_outputs)
5467 AC_CONFIG_COMMANDS([default],
5469 case ${CONFIG_HEADERS} in
5470 *auto-host.h:config.in*)
5473 # Make sure all the subdirs exist.
5474 for d in $subdirs doc build common c-family
5476 test -d $d || mkdir $d
5479 [subdirs='$subdirs'])