2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2014 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
282 ACX_PROG_GNAT([-I"$srcdir"/ada])
284 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
285 # optimizations to be activated explicitly by the toplevel.
288 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
289 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
294 # Determine PICFLAG for target gnatlib.
295 GCC_PICFLAG_FOR_TARGET
296 AC_SUBST(PICFLAG_FOR_TARGET)
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
308 # sizeof(char) is 1 by definition.
309 AC_CHECK_SIZEOF(void *)
310 AC_CHECK_SIZEOF(short)
312 AC_CHECK_SIZEOF(long)
313 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
314 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
317 # ---------------------
318 # Warnings and checking
319 # ---------------------
321 # Check $CC warning features (if it's GCC).
322 # We want to use -pedantic, but we don't want warnings about
326 # * C++11 narrowing conversions in { }
327 # So, we only use -pedantic if we can disable those warnings.
329 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
330 AC_ARG_ENABLE(build-format-warnings,
331 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
332 [],[enable_build_format_warnings=yes])
333 AS_IF([test $enable_build_format_warnings = no],
334 [wf_opt=-Wno-format],[wf_opt=])
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
344 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
345 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
346 [-Wno-overlength-strings])), [strict_warn])
347 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
349 # The above macros do nothing if the compiler is not GCC. However, the
350 # Makefile has more goo to add other flags, so these variables are used
351 # to enable warnings only for GCC.
354 if test "x$GCC" = "xyes"; then
355 warn_cflags='$(GCC_WARN_CFLAGS)'
356 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
358 AC_SUBST(warn_cflags)
359 AC_SUBST(warn_cxxflags)
361 # Disable exceptions and RTTI if building with g++
362 ACX_PROG_CC_WARNING_OPTS(
363 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
366 # Enable expensive internal checks
368 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
372 AC_ARG_ENABLE(checking,
373 [AS_HELP_STRING([[--enable-checking[=LIST]]],
374 [enable expensive run-time checks. With LIST,
375 enable only specific categories of checks.
376 Categories are: yes,no,all,none,release.
377 Flags are: assert,df,fold,gc,gcac,gimple,misc,
378 rtlflag,rtl,runtime,tree,valgrind,types])],
379 [ac_checking_flags="${enableval}"],[
380 # Determine the default checks.
381 if test x$is_release = x ; then
382 ac_checking_flags=yes
384 ac_checking_flags=release
386 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
387 for check in release $ac_checking_flags
390 # these set all the flags to specific states
391 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking=1 ;
393 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
394 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
395 ac_tree_checking=1 ; ac_valgrind_checking= ;
396 ac_types_checking=1 ;;
397 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
398 ac_fold_checking= ; ac_gc_checking= ;
399 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
400 ac_rtlflag_checking= ; ac_runtime_checking= ;
401 ac_tree_checking= ; ac_valgrind_checking= ;
402 ac_types_checking= ;;
403 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
404 ac_fold_checking=1 ; ac_gc_checking=1 ;
405 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
406 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
407 ac_tree_checking=1 ; ac_valgrind_checking= ;
408 ac_types_checking=1 ;;
409 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
410 ac_fold_checking= ; ac_gc_checking= ;
411 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
412 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
413 ac_tree_checking= ; ac_valgrind_checking= ;
414 ac_types_checking= ;;
415 # these enable particular checks
416 assert) ac_assert_checking=1 ;;
417 df) ac_df_checking=1 ;;
418 fold) ac_fold_checking=1 ;;
419 gc) ac_gc_checking=1 ;;
420 gcac) ac_gc_always_collect=1 ;;
421 gimple) ac_gimple_checking=1 ;;
422 misc) ac_checking=1 ;;
423 rtl) ac_rtl_checking=1 ;;
424 rtlflag) ac_rtlflag_checking=1 ;;
425 runtime) ac_runtime_checking=1 ;;
426 tree) ac_tree_checking=1 ;;
427 types) ac_types_checking=1 ;;
428 valgrind) ac_valgrind_checking=1 ;;
429 *) AC_MSG_ERROR(unknown check category $check) ;;
435 if test x$ac_checking != x ; then
436 AC_DEFINE(ENABLE_CHECKING, 1,
437 [Define if you want more run-time sanity checks. This one gets a grab
438 bag of miscellaneous but relatively cheap checks.])
439 nocommon_flag=-fno-common
441 AC_SUBST(nocommon_flag)
442 if test x$ac_df_checking != x ; then
443 AC_DEFINE(ENABLE_DF_CHECKING, 1,
444 [Define if you want more run-time sanity checks for dataflow.])
446 if test x$ac_assert_checking != x ; then
447 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
448 [Define if you want assertions enabled. This is a cheap check.])
450 if test x$ac_gimple_checking != x ; then
451 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
452 [Define if you want operations on GIMPLE (the basic data structure of
453 the high-level optimizers) to be checked for dynamic type safety at
454 runtime. This is moderately expensive.])
456 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
457 if test x$ac_runtime_checking != x ; then
458 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
459 [Define if you want runtime assertions enabled. This is a cheap check.])
461 if test x$ac_tree_checking != x ; then
462 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
463 [Define if you want all operations on trees (the basic data
464 structure of the front ends) to be checked for dynamic type safety
465 at runtime. This is moderately expensive. The tree browser debugging
466 routines will also be enabled by this option.
468 TREEBROWSER=tree-browser.o
471 if test x$ac_types_checking != x ; then
472 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
473 [Define if you want all gimple types to be verified after gimplifiation.
477 AC_SUBST(TREEBROWSER)
478 AC_SUBST(TREECHECKING)
479 if test x$ac_rtl_checking != x ; then
480 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
481 [Define if you want all operations on RTL (the basic data structure
482 of the optimizer and back end) to be checked for dynamic type safety
483 at runtime. This is quite expensive.])
485 if test x$ac_rtlflag_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
487 [Define if you want RTL flag accesses to be checked against the RTL
488 codes that are supported for each access macro. This is relatively
491 if test x$ac_gc_checking != x ; then
492 AC_DEFINE(ENABLE_GC_CHECKING, 1,
493 [Define if you want the garbage collector to do object poisoning and
494 other memory allocation checks. This is quite expensive.])
496 if test x$ac_gc_always_collect != x ; then
497 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
498 [Define if you want the garbage collector to operate in maximally
499 paranoid mode, validating the entire heap and collecting garbage at
500 every opportunity. This is extremely expensive.])
502 if test x$ac_fold_checking != x ; then
503 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
504 [Define if you want fold checked that it never destructs its argument.
505 This is quite expensive.])
507 valgrind_path_defines=
510 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
511 dnl # an if statement. This was the source of very frustrating bugs
512 dnl # in converting to autoconf 2.5x!
513 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
515 if test x$ac_valgrind_checking != x ; then
516 # It is certainly possible that there's valgrind but no valgrind.h.
517 # GCC relies on making annotations so we must have both.
518 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
519 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
520 [[#include <valgrind/memcheck.h>
521 #ifndef VALGRIND_DISCARD
522 #error VALGRIND_DISCARD not defined
524 [gcc_cv_header_valgrind_memcheck_h=yes],
525 [gcc_cv_header_valgrind_memcheck_h=no])
526 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
527 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
528 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
529 [[#include <memcheck.h>
530 #ifndef VALGRIND_DISCARD
531 #error VALGRIND_DISCARD not defined
533 [gcc_cv_header_memcheck_h=yes],
534 [gcc_cv_header_memcheck_h=no])
535 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
536 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
537 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
538 if test "x$valgrind_path" = "x" \
539 || (test $have_valgrind_h = no \
540 && test $gcc_cv_header_memcheck_h = no \
541 && test $gcc_cv_header_valgrind_memcheck_h = no); then
542 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
544 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
545 valgrind_command="$valgrind_path -q"
546 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
547 [Define if you want to run subprograms and generated programs
548 through valgrind (a memory checker). This is extremely expensive.])
549 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
550 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
551 [Define if valgrind's valgrind/memcheck.h header is installed.])
553 if test $gcc_cv_header_memcheck_h = yes; then
554 AC_DEFINE(HAVE_MEMCHECK_H, 1,
555 [Define if valgrind's memcheck.h header is installed.])
558 AC_SUBST(valgrind_path_defines)
559 AC_SUBST(valgrind_command)
561 # Enable code coverage collection
562 AC_ARG_ENABLE(coverage,
563 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
564 [enable compiler's code coverage collection.
565 Use to measure compiler performance and locate
566 unused parts of the compiler. With LEVEL, specify
567 optimization. Values are opt, noopt,
569 [case "${enableval}" in
571 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
577 # a.k.a. --disable-coverage
581 AC_MSG_ERROR(unknown coverage setting $enableval)
585 AC_SUBST(coverage_flags)
587 AC_ARG_ENABLE(gather-detailed-mem-stats,
588 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
589 [enable detailed memory allocation stats gathering])], [],
590 [enable_gather_detailed_mem_stats=no])
591 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
592 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
593 [Define to enable detailed memory allocation stats gathering.])
595 # -------------------------------
596 # Miscenalleous configure options
597 # -------------------------------
601 [AS_HELP_STRING([--with-stabs],
602 [arrange to use stabs instead of host debug format])],
606 # Determine whether or not multilibs are enabled.
607 AC_ARG_ENABLE(multilib,
608 [AS_HELP_STRING([--enable-multilib],
609 [enable library support for multiple ABIs])],
610 [], [enable_multilib=yes])
611 AC_SUBST(enable_multilib)
613 # Determine whether or not multiarch is enabled.
614 AC_ARG_ENABLE(multiarch,
615 [AS_HELP_STRING([--enable-multiarch],
616 [enable support for multiarch paths])],
617 [case "${enableval}" in
618 yes|no|auto) enable_multiarch=$enableval;;
619 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
620 esac], [enable_multiarch=auto])
621 if test x${enable_multiarch} = xauto; then
622 if test x${with_native_system_header_dir} != x; then
623 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
626 if test x$host != x$target && test "x$with_sysroot" = x; then
627 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
631 AC_MSG_CHECKING(for multiarch configuration)
632 AC_SUBST(enable_multiarch)
633 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
635 # needed for setting the multiarch name for soft-float/hard-float ABIs
639 # Enable __cxa_atexit for C++.
640 AC_ARG_ENABLE(__cxa_atexit,
641 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
644 # Enable C extension for decimal float if target supports it.
645 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
647 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
648 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
649 [Define to 1 to enable decimal float extension to C.])
651 # Use default_decimal_float for dependency.
652 enable_decimal_float=$default_decimal_float
654 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
655 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
656 [Define to 1 to specify that we are using the BID decimal floating
657 point format instead of DPD])
659 # Enable C extension for fixed-point arithmetic.
660 AC_ARG_ENABLE(fixed-point,
661 [AS_HELP_STRING([--enable-fixed-point],
662 [enable fixed-point arithmetic extension to C])],
667 enable_fixed_point=yes
671 enable_fixed_point=yes
674 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
675 enable_fixed_point=no
679 AC_SUBST(enable_fixed_point)
681 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
682 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
683 [Define to 1 to enable fixed-point arithmetic extension to C.])
686 # Pass with no value to take the default
687 # Pass with a value to specify a thread package
688 AC_ARG_ENABLE(threads,
689 [AS_HELP_STRING([[--enable-threads[=LIB]]],
690 [enable thread usage for target GCC,
691 using LIB thread package])],,
695 [AS_HELP_STRING([--enable-tls],
696 [enable or disable generation of tls code
697 overriding the assembler check for tls support])],
701 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
702 Valid choices are 'yes' and 'no'.]) ;;
706 AC_ARG_ENABLE(objc-gc,
707 [AS_HELP_STRING([--enable-objc-gc],
708 [enable the use of Boehm's garbage collector with
709 the GNU Objective-C runtime])],
710 if test x$enable_objc_gc = xno; then
718 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
719 dwarf2="$with_dwarf2",
722 AC_ARG_ENABLE(shared,
723 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
725 case $enable_shared in
729 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
730 for pkg in $enableval; do
731 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
738 ], [enable_shared=yes])
739 AC_SUBST(enable_shared)
741 AC_ARG_WITH([native-system-header-dir],
742 [ --with-native-system-header-dir=dir
743 use dir as the directory to look for standard
744 system header files in. Defaults to /usr/include.],
746 case ${with_native_system_header_dir} in
747 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
748 /* | [[A-Za-z]]:[[\\/]]*) ;;
749 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
751 configured_native_system_header_dir="${withval}"
752 ], [configured_native_system_header_dir=])
754 AC_ARG_WITH(build-sysroot,
755 [AS_HELP_STRING([--with-build-sysroot=sysroot],
756 [use sysroot as the system root during the build])],
757 [if test x"$withval" != x ; then
758 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
760 [SYSROOT_CFLAGS_FOR_TARGET=])
761 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
763 if test "x$prefix" = xNONE; then
764 test_prefix=/usr/local
768 if test "x$exec_prefix" = xNONE; then
769 test_exec_prefix=$test_prefix
771 test_exec_prefix=$exec_prefix
775 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
776 [search for usr/lib, usr/include, et al, within DIR])],
778 case ${with_sysroot} in
779 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
780 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
783 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
784 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
786 case ${TARGET_SYSTEM_ROOT} in
787 "${test_prefix}"|"${test_prefix}/"*|\
788 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
789 '${prefix}'|'${prefix}/'*|\
790 '${exec_prefix}'|'${exec_prefix}/'*)
791 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
792 TARGET_SYSTEM_ROOT_DEFINE="$t"
797 TARGET_SYSTEM_ROOT_DEFINE=
798 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
800 AC_SUBST(TARGET_SYSTEM_ROOT)
801 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
802 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
805 [AS_HELP_STRING([--with-specs=SPECS],
806 [add SPECS to driver command-line processing])],
807 [CONFIGURE_SPECS=$withval],
810 AC_SUBST(CONFIGURE_SPECS)
812 ACX_PKGVERSION([GCC])
813 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
815 # Sanity check enable_languages in case someone does not run the toplevel
816 # configure # script.
817 AC_ARG_ENABLE(languages,
818 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
819 [case ,${enable_languages}, in
821 # go safe -- we cannot be much sure without the toplevel
823 # analysis of which target libs are present and usable
827 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
832 enable_languages=c,${enable_languages}
835 [enable_languages=c])
837 AC_ARG_WITH(multilib-list,
838 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
840 with_multilib_list=default)
842 # -------------------------
843 # Checks for other programs
844 # -------------------------
848 # Find some useful tools
850 # We need awk to create options.c and options.h.
851 # Bail out if it's missing.
853 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
860 AC_SUBST(ranlib_flags)
864 # See if cmp has --ignore-initial.
865 gcc_AC_PROG_CMP_IGNORE_INITIAL
867 # See if we have the mktemp command.
868 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
870 # See if makeinfo has been installed and is modern enough
871 # that we can use it.
872 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
873 [GNU texinfo.* \([0-9][0-9.]*\)],
874 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
875 if test $gcc_cv_prog_makeinfo_modern = no; then
877 *** Makeinfo is missing or too old.
878 *** Info documentation will not be built.])
885 # Is pod2man recent enough to regenerate manpages?
886 AC_MSG_CHECKING([for recent Pod::Man])
887 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
889 GENERATED_MANPAGES=generated-manpages
894 AC_SUBST(GENERATED_MANPAGES)
896 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
899 dnl Don't use AC_PROG_LEX; we insist on flex.
900 dnl LEXLIB is not useful in gcc.
901 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
904 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
906 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
907 # check for build == host before using them.
910 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
911 && test -d ../binutils ; then
912 NM='${objdir}/../binutils/nm-new'
914 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
918 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
919 && test -d ../binutils ; then
920 AR='${objdir}/../binutils/ar'
922 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
926 # --------------------
927 # Checks for C headers
928 # --------------------
930 # Need to reject headers which give warnings, so that the -Werror bootstrap
931 # works later. *sigh* This needs to come before all header checks.
939 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
940 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
941 sys/resource.h sys/param.h sys/times.h sys/stat.h \
942 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
944 # Check for thread headers.
945 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
946 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
948 # These tests can't be done till we know if we have limits.h.
952 # ----------------------
953 # Checks for C++ headers
954 # ----------------------
956 dnl Autoconf will give an error in the configure script if there is no
957 dnl C++ preprocessor. Hack to prevent that.
958 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
960 m4_popdef([AC_MSG_ERROR])[]dnl
964 AC_CHECK_HEADERS(unordered_map)
965 AC_CHECK_HEADERS(tr1/unordered_map)
966 AC_CHECK_HEADERS(ext/hash_map)
971 # Dependency checking.
976 AC_CONFIG_COMMANDS([gccdepdir],[
977 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
978 for lang in $subdirs c-family common
980 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
981 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
983 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
991 # These libraries may be used by collect2.
992 # We may need a special search path to get them linked.
993 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
995 for libs in '' -lld -lmld \
996 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
997 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1000 AC_TRY_LINK_FUNC(ldopen,
1001 [gcc_cv_collect2_libs="$libs"; break])
1004 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1005 case $gcc_cv_collect2_libs in
1007 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1009 AC_SUBST(COLLECT2_LIBS)
1011 # When building Ada code on Alpha, we need exc_resume which is usually in
1012 # -lexc. So test for it.
1015 AC_SEARCH_LIBS(exc_resume, exc)
1018 AC_SUBST(GNAT_LIBEXC)
1020 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1023 AC_SEARCH_LIBS(kstat_open, kstat)
1024 EXTRA_GCC_LIBS="$LIBS"
1026 AC_SUBST(EXTRA_GCC_LIBS)
1028 # Some systems put ldexp and frexp in libm instead of libc; assume
1029 # they're both in the same place. jcf-dump needs them.
1032 AC_SEARCH_LIBS(ldexp, m)
1037 # Use <inttypes.h> only if it exists,
1038 # doesn't clash with <sys/types.h>, and declares intmax_t.
1039 AC_MSG_CHECKING(for inttypes.h)
1040 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1041 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1042 [[#include <sys/types.h>
1043 #include <inttypes.h>]],
1044 [[intmax_t i = -1;]])],
1045 [gcc_cv_header_inttypes_h=yes],
1046 [gcc_cv_header_inttypes_h=no])])
1047 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1048 if test $gcc_cv_header_inttypes_h = yes; then
1049 AC_DEFINE(HAVE_INTTYPES_H, 1,
1050 [Define if you have a working <inttypes.h> header file.])
1053 dnl Disabled until we have a complete test for buggy enum bitfields.
1054 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1056 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1057 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1058 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1059 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1060 putchar_unlocked putc_unlocked)
1061 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1062 sysconf strsignal getrusage nl_langinfo \
1063 gettimeofday mbstowcs wcswidth mmap setlocale \
1064 gcc_UNLOCKED_FUNCS madvise)
1066 if test x$ac_cv_func_mbstowcs = xyes; then
1067 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1068 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1074 [gcc_cv_func_mbstowcs_works=yes],
1075 [gcc_cv_func_mbstowcs_works=no],
1076 [gcc_cv_func_mbstowcs_works=yes])])
1077 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1078 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1079 [Define this macro if mbstowcs does not crash when its
1080 first argument is NULL.])
1084 AC_CHECK_TYPE(ssize_t, int)
1085 AC_CHECK_TYPE(caddr_t, char *)
1087 GCC_AC_FUNC_MMAP_BLACKLIST
1091 # Under VMS, vfork works very differently than on Unix. The standard test
1092 # won't work, and it isn't easily adaptable. It makes more sense to
1094 ac_cv_func_vfork_works=yes
1099 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1100 # iconv() prototype.
1105 # Until we have in-tree GNU iconv:
1107 AC_SUBST(LIBICONV_DEP)
1113 # We will need to find libiberty.h and ansidecl.h
1114 saved_CFLAGS="$CFLAGS"
1115 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1116 saved_CXXFLAGS="$CXXFLAGS"
1117 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1118 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1119 strsignal strstr stpcpy strverscmp \
1120 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1121 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1122 #include "ansidecl.h"
1123 #include "system.h"])
1125 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1126 #include "ansidecl.h"
1128 #ifdef HAVE_SYS_RESOURCE_H
1129 #include <sys/resource.h>
1133 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1134 #include "ansidecl.h"
1136 #ifdef HAVE_SYS_RESOURCE_H
1137 #include <sys/resource.h>
1139 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1140 [Define to `long' if <sys/resource.h> doesn't define.])])
1142 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1143 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1144 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1145 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1146 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1147 #include "ansidecl.h"
1156 gcc_AC_CHECK_DECLS(times, , ,[
1157 #include "ansidecl.h"
1159 #ifdef HAVE_SYS_TIMES_H
1160 #include <sys/times.h>
1164 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1165 #include "ansidecl.h"
1170 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1173 gcc_AC_CHECK_DECLS(madvise, , ,[
1174 #include "ansidecl.h"
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190 [Define if <sys/times.h> defines struct tms.])
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201 AC_DEFINE(HAVE_CLOCK_T, 1,
1202 [Define if <time.h> defines clock_t.])
1205 # Check if F_SETLKW is supported by fcntl.
1206 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1207 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1208 #include <fcntl.h>]], [[
1214 return fcntl (1, F_SETLKW, &fl);]])],
1215 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1216 if test $ac_cv_f_setlkw = yes; then
1217 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1218 [Define if F_SETLKW supported by fcntl.])
1221 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1222 CFLAGS="$saved_CFLAGS"
1223 CXXFLAGS="$saved_CXXFLAGS"
1225 # mkdir takes a single argument on some systems.
1226 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1234 # With Setjmp/Longjmp based exception handling.
1235 AC_ARG_ENABLE(sjlj-exceptions,
1236 [AS_HELP_STRING([--enable-sjlj-exceptions],
1237 [arrange to use setjmp/longjmp exception handling])],
1240 if test $enableval != yes; then
1241 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1246 force_sjlj_exceptions=yes],
1249 force_sjlj_exceptions=yes
1253 force_sjlj_exceptions=yes
1257 force_sjlj_exceptions=no
1260 if test $force_sjlj_exceptions = yes; then
1261 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1262 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1263 [Define 0/1 to force the choice for exception handling model.])
1266 # --------------------------------------------------------
1267 # Build, host, and target specific configuration fragments
1268 # --------------------------------------------------------
1270 # Collect build-machine-specific information.
1271 . ${srcdir}/config.build
1273 # Collect host-machine-specific information.
1274 . ${srcdir}/config.host
1278 # Collect target-machine-specific information.
1279 . ${srcdir}/config.gcc
1281 extra_objs="${host_extra_objs} ${extra_objs}"
1282 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1284 # Default the target-machine variables that were not explicitly set.
1285 if test x"$tm_file" = x
1286 then tm_file=$cpu_type/$cpu_type.h; fi
1288 if test x"$extra_headers" = x
1289 then extra_headers=; fi
1291 if test x$md_file = x
1292 then md_file=$cpu_type/$cpu_type.md; fi
1294 if test x$out_file = x
1295 then out_file=$cpu_type/$cpu_type.c; fi
1297 if test x"$tmake_file" = x
1298 then tmake_file=$cpu_type/t-$cpu_type
1301 # Support --enable-initfini-array.
1302 if test x$enable_initfini_array != xno; then
1303 tm_file="${tm_file} initfini-array.h"
1306 if test x"$dwarf2" = xyes
1307 then tm_file="$tm_file tm-dwarf2.h"
1310 # Say what files are being used for the output code and MD file.
1311 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1312 echo "Using \`$srcdir/config/$md_file' as machine description file."
1314 # If any of the xm_file variables contain nonexistent files, warn
1315 # about them and drop them.
1318 for x in $build_xm_file; do
1319 if test -f $srcdir/config/$x
1321 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1327 for x in $host_xm_file; do
1328 if test -f $srcdir/config/$x
1330 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1336 for x in $xm_file; do
1337 if test -f $srcdir/config/$x
1339 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1345 for f in $tm_file; do
1348 if test $count = ax; then
1349 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1351 echo "Using the following target machine macro files:"
1352 for f in $tm_file; do
1353 echo " $srcdir/config/$f"
1357 if test x$need_64bit_hwint = xyes; then
1358 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1359 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1362 if test x$use_long_long_for_widest_fast_int = xyes; then
1363 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1364 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1365 efficiently supported by the host hardware.])
1368 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1369 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1371 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1372 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1375 for f in $host_xm_file; do
1378 if test $count = a; then
1380 elif test $count = ax; then
1381 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1383 echo "Using the following host machine macro files:"
1384 for f in $host_xm_file; do
1385 echo " $srcdir/config/$f"
1388 echo "Using ${out_host_hook_obj} for host machine hooks."
1390 if test "$host_xm_file" != "$build_xm_file"; then
1392 for f in $build_xm_file; do
1395 if test $count = a; then
1397 elif test $count = ax; then
1398 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1400 echo "Using the following build machine macro files:"
1401 for f in $build_xm_file; do
1402 echo " $srcdir/config/$f"
1407 if test -n "$configured_native_system_header_dir"; then
1408 native_system_header_dir=$configured_native_system_header_dir
1410 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1411 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1415 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1416 gcc_cv_mcontext_underscores,
1418 #include <sys/cdefs.h>
1419 #include <sys/signal.h>
1420 #include <ucontext.h>
1421 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1423 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1424 if test $gcc_cv_mcontext_underscores = yes; then
1425 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1426 [mcontext_t fields start with __])
1435 # Check if a valid thread package
1436 case ${enable_threads} in
1439 target_thread_file='single'
1443 target_thread_file='single'
1445 aix | dce | lynx | mipssde | posix | rtems | \
1446 single | tpf | vxworks | win32)
1447 target_thread_file=${enable_threads}
1450 echo "${enable_threads} is an unknown thread package" 1>&2
1455 if test x${thread_file} = x; then
1456 # No thread file set by target-specific clauses in config.gcc,
1457 # so use file chosen by default logic above
1458 thread_file=${target_thread_file}
1466 if test x$enable___cxa_atexit = xyes || \
1467 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1468 if test x$host = x$target; then
1470 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1471 # keyed to flag_use_cxa_atexit
1479 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1480 [echo "__cxa_atexit can't be enabled on this target"])
1484 # We can't check for __cxa_atexit when building a cross, so assume
1488 if test x$use_cxa_atexit = xyes; then
1489 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1490 [Define if you want to use __cxa_atexit, rather than atexit, to
1491 register C++ destructors for local statics and global objects.
1492 This is essential for fully standards-compliant handling of
1493 destructors, but requires __cxa_atexit in libc.])
1497 # Look for a file containing extra machine modes.
1498 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1499 extra_modes_file='$(srcdir)'/config/${extra_modes}
1500 AC_SUBST(extra_modes_file)
1501 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1502 [Define to the name of a file containing a list of extra machine modes
1503 for this architecture.])
1506 # Convert extra_options into a form suitable for Makefile use.
1509 for f in $extra_options; do
1510 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1511 all_opt_files="$all_opt_files $srcdir/config/$f"
1513 AC_SUBST(extra_opt_files)
1515 # auto-host.h is the file containing items generated by autoconf and is
1516 # the first file included by config.h.
1517 # If host=build, it is correct to have bconfig include auto-host.h
1518 # as well. If host!=build, we are in error and need to do more
1519 # work to find out the build config parameters.
1520 if test x$host = x$build
1522 build_auto=auto-host.h
1524 # We create a subdir, then run autoconf in the subdir.
1525 # To prevent recursion we set host and build for the new
1526 # invocation of configure to the build for this invocation
1533 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1534 *) realsrcdir=../${srcdir};;
1536 # Clearing GMPINC is necessary to prevent host headers being
1537 # used by the build compiler. Defining GENERATOR_FILE stops
1538 # system.h from including gmp.h.
1539 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1540 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1541 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1542 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1543 ${realsrcdir}/configure \
1544 --enable-languages=${enable_languages-all} \
1545 --target=$target_alias --host=$build_alias --build=$build_alias
1547 # We just finished tests for the build machine, so rename
1548 # the file auto-build.h in the gcc directory.
1549 mv auto-host.h ../auto-build.h
1552 build_auto=auto-build.h
1554 AC_SUBST(build_subdir)
1556 tm_file="${tm_file} defaults.h"
1557 tm_p_file="${tm_p_file} tm-preds.h"
1558 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1559 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1560 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1561 # put this back in temporarily.
1562 xm_file="auto-host.h ansidecl.h ${xm_file}"
1569 # Compile in configure arguments.
1570 if test -f configargs.h ; then
1571 # Being re-configured.
1572 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1573 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1575 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1578 # Double all backslashes and backslash all quotes to turn
1579 # gcc_config_arguments into a C string.
1580 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1581 $gcc_config_arguments
1583 gcc_config_arguments_str=`cat conftest.out`
1586 cat > configargs.h <<EOF
1587 /* Generated automatically. */
1588 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1589 static const char thread_model[] = "$thread_file";
1591 static const struct {
1592 const char *name, *value;
1593 } configure_default_options[] = $configure_default_options;
1598 gcc_BASEVER=`cat $srcdir/BASE-VER`
1599 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1600 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1601 if test -f $srcdir/REVISION ; then
1602 gcc_REVISION=`cat $srcdir/REVISION`
1606 cat > plugin-version.h <<EOF
1607 #include "configargs.h"
1609 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1610 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1611 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1612 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1614 static char basever[] = "$gcc_BASEVER";
1615 static char datestamp[] = "$gcc_DATESTAMP";
1616 static char devphase[] = "$gcc_DEVPHASE";
1617 static char revision[] = "$gcc_REVISION";
1619 /* FIXME plugins: We should make the version information more precise.
1620 One way to do is to add a checksum. */
1622 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1624 configuration_arguments};
1628 # Internationalization
1629 ZW_GNU_GETTEXT_SISTER_DIR
1631 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1632 # -liconv on the link line twice.
1633 case "$LIBINTL" in *$LIBICONV*)
1637 AC_ARG_ENABLE(secureplt,
1638 [AS_HELP_STRING([--enable-secureplt],
1639 [enable -msecure-plt by default for PowerPC])],
1642 AC_ARG_ENABLE(leading-mingw64-underscores,
1643 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1644 [enable leading underscores on 64 bit mingw targets]),
1646 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1647 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1648 [Define if we should use leading underscore on 64 bit mingw targets])])
1651 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1654 AC_ARG_ENABLE(frame-pointer,
1655 [AS_HELP_STRING([--enable-frame-pointer],
1656 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1659 linux* | darwin[[8912]]*)
1660 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1662 enable_frame_pointer=no
1665 enable_frame_pointer=yes
1670 # Windows32 Registry support for specifying GCC installation paths.
1671 AC_ARG_ENABLE(win32-registry,
1672 [AS_HELP_STRING([--disable-win32-registry],
1673 [disable lookup of installation paths in the
1674 Registry on Windows hosts])
1675 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1676 AS_HELP_STRING([--enable-win32-registry=KEY],
1677 [use KEY instead of GCC version as the last portion
1678 of the registry key])],,)
1681 win32 | pe | cygwin* | mingw32* | uwin*)
1682 if test "x$enable_win32_registry" != xno; then
1683 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1686 if test "x$enable_win32_registry" != xno; then
1687 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1688 [Define to 1 if installation paths should be looked up in the Windows
1689 Registry. Ignored on non-Windows hosts.])
1691 if test "x$enable_win32_registry" != xyes \
1692 && test "x$enable_win32_registry" != x; then
1693 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1694 [Define to be the last component of the Windows registry key under which
1695 to look for installation paths. The full key used will be
1696 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1697 The default is the GCC version number.])
1703 # Get an absolute path to the GCC top-level source directory
1704 holddir=`${PWDCMD-pwd}`
1706 topdir=`${PWDCMD-pwd}`
1709 # Conditionalize the makefile for this host machine.
1711 for f in ${host_xmake_file}
1713 if test -f ${srcdir}/config/$f
1715 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1719 # Conditionalize the makefile for this target machine.
1721 for f in ${tmake_file}
1723 if test -f ${srcdir}/config/$f
1725 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1728 tmake_file="${tmake_file_}"
1730 out_object_file=`basename $out_file .c`.o
1731 common_out_object_file=`basename $common_out_file .c`.o
1733 tm_file_list="options.h"
1734 tm_include_list="options.h insn-constants.h"
1735 for f in $tm_file; do
1738 f=`echo $f | sed 's/^..//'`
1739 tm_file_list="${tm_file_list} $f"
1740 tm_include_list="${tm_include_list} $f"
1743 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1744 tm_include_list="${tm_include_list} $f"
1747 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1748 tm_include_list="${tm_include_list} config/$f"
1755 for f in $tm_p_file; do
1758 tm_p_file_list="${tm_p_file_list} $f"
1759 tm_p_include_list="${tm_p_include_list} $f"
1762 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1763 tm_p_include_list="${tm_p_include_list} config/$f"
1769 for f in $xm_file; do
1772 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1773 xm_include_list="${xm_include_list} $f"
1776 xm_file_list="${xm_file_list} $f"
1777 xm_include_list="${xm_include_list} $f"
1780 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1781 xm_include_list="${xm_include_list} config/$f"
1787 host_xm_include_list=
1788 for f in $host_xm_file; do
1791 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1792 host_xm_include_list="${host_xm_include_list} $f"
1795 host_xm_file_list="${host_xm_file_list} $f"
1796 host_xm_include_list="${host_xm_include_list} $f"
1799 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1800 host_xm_include_list="${host_xm_include_list} config/$f"
1806 for f in $build_xm_file; do
1809 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1810 build_xm_include_list="${build_xm_include_list} $f"
1812 auto-build.h | auto-host.h )
1813 build_xm_file_list="${build_xm_file_list} $f"
1814 build_xm_include_list="${build_xm_include_list} $f"
1817 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1818 build_xm_include_list="${build_xm_include_list} config/$f"
1823 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1824 # cross-compiler which does not use the native headers and libraries.
1825 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1826 CROSS= AC_SUBST(CROSS)
1827 ALL=all.internal AC_SUBST(ALL)
1828 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1830 if test "x$with_build_sysroot" != x; then
1831 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1833 # This value is used, even on a native system, because
1834 # CROSS_SYSTEM_HEADER_DIR is just
1835 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1836 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1839 if test x$host != x$target
1841 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1843 SYSTEM_HEADER_DIR=$build_system_header_dir
1844 case "$host","$target" in
1845 # Darwin crosses can use the host system's libraries and headers,
1846 # because of the fat library support. Of course, it must be the
1847 # same version of Darwin on both sides. Allow the user to
1848 # just say --target=foo-darwin without a version number to mean
1849 # "the version on this system".
1850 *-*-darwin*,*-*-darwin*)
1851 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1852 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1853 if test $hostos = $targetos -o $targetos = darwin ; then
1855 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1860 i?86-*-*,x86_64-*-* \
1861 | powerpc*-*-*,powerpc64*-*-*)
1862 CROSS="$CROSS -DNATIVE_CROSS" ;;
1867 if test "x$with_headers" = x; then
1874 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1875 SYSTEM_HEADER_DIR=$build_system_header_dir
1878 # If this is a cross-compiler that does not
1879 # have its own set of headers then define
1882 # If this is using newlib, without having the headers available now,
1883 # then define inhibit_libc in LIBGCC2_CFLAGS.
1884 # This prevents libgcc2 from containing any code which requires libc
1886 : ${inhibit_libc=false}
1887 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1888 test x$with_newlib = xyes ; } &&
1889 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1892 AC_SUBST(inhibit_libc)
1894 # When building gcc with a cross-compiler, we need to adjust things so
1895 # that the generator programs are still built with the native compiler.
1896 # Also, we cannot run fixincludes.
1898 # These are the normal (build=host) settings:
1899 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1900 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1901 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1902 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1903 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1904 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1906 # And these apply if build != host, or we are generating coverage data
1907 if test x$build != x$host || test "x$coverage_flags" != x
1909 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1910 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
1911 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1914 # Expand extra_headers to include complete path.
1915 # This substitutes for lots of t-* files.
1917 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1918 for file in ${extra_headers} ; do
1919 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1922 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1923 if test x"$use_gcc_tgmath" = xyes
1924 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1927 # Define collect2 in Makefile.
1928 case $host_can_use_collect2 in
1930 *) collect2='collect2$(exeext)' ;;
1932 AC_SUBST([collect2])
1934 # Add a definition of USE_COLLECT2 if system wants one.
1935 case $use_collect2 in
1936 no) use_collect2= ;;
1939 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1940 xm_defines="${xm_defines} USE_COLLECT2"
1941 case $host_can_use_collect2 in
1943 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1949 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1950 [Define to the name of the LTO plugin DSO that must be
1951 passed to the linker's -plugin=LIB option.])
1953 # ---------------------------
1954 # Assembler & linker features
1955 # ---------------------------
1957 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1958 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1959 # However when ld-new is first executed from the build tree, libtool will
1960 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1961 # to the build tree. While doing this we need to use the previous-stage
1962 # linker, or we have an infinite loop. The presence of a shell script as
1963 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1964 # the gcc/collect-ld script. So we need to know how libtool works, or
1965 # exec-tool will fail.
1967 m4_defun([_LT_CONFIG_COMMANDS], [])
1970 AC_SUBST(enable_fast_install)
1972 # Identify the assembler which will work hand-in-glove with the newly
1973 # built GCC, so that we can examine its features. This is the assembler
1974 # which will be driven by the driver program.
1976 # If build != host, and we aren't building gas in-tree, we identify a
1977 # build->target assembler and hope that it will have the same features
1978 # as the host->target assembler we'll be using.
1979 gcc_cv_gas_major_version=
1980 gcc_cv_gas_minor_version=
1981 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1983 m4_pattern_allow([AS_FOR_TARGET])dnl
1984 AS_VAR_SET_IF(gcc_cv_as,, [
1985 if test -x "$DEFAULT_ASSEMBLER"; then
1986 gcc_cv_as="$DEFAULT_ASSEMBLER"
1987 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1988 && test -f ../gas/Makefile \
1989 && test x$build = x$host; then
1990 gcc_cv_as=../gas/as-new$build_exeext
1991 elif test -x as$build_exeext; then
1992 # Build using assembler in the current directory.
1993 gcc_cv_as=./as$build_exeext
1994 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1995 gcc_cv_as="$AS_FOR_TARGET"
1997 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2000 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2001 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2002 case "$ORIGINAL_AS_FOR_TARGET" in
2003 ./as | ./as$build_exeext) ;;
2004 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2007 AC_MSG_CHECKING(what assembler to use)
2008 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2009 # Single tree build which includes gas. We want to prefer it
2010 # over whatever linker top-level may have detected, since
2011 # we'll use what we're building after installation anyway.
2012 AC_MSG_RESULT(newly built gas)
2014 _gcc_COMPUTE_GAS_VERSION
2015 in_tree_gas_is_elf=no
2016 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2017 || (grep 'obj_format = multi' ../gas/Makefile \
2018 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2020 in_tree_gas_is_elf=yes
2023 AC_MSG_RESULT($gcc_cv_as)
2029 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2030 [case "${enableval}" in
2037 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2038 [case "${enableval}" in
2040 install_gold_as_default=yes
2043 if test x${default_ld} != x; then
2044 install_gold_as_default=yes
2050 AC_MSG_ERROR([invalid --enable-gold argument])
2053 [install_gold_as_default=no])
2055 # Identify the linker which will work hand-in-glove with the newly
2056 # built GCC, so that we can examine its features. This is the linker
2057 # which will be driven by the driver program.
2059 # If build != host, and we aren't building gas in-tree, we identify a
2060 # build->target linker and hope that it will have the same features
2061 # as the host->target linker we'll be using.
2062 gcc_cv_gld_major_version=
2063 gcc_cv_gld_minor_version=
2064 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2065 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2066 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2068 AS_VAR_SET_IF(gcc_cv_ld,, [
2069 if test -x "$DEFAULT_LINKER"; then
2070 gcc_cv_ld="$DEFAULT_LINKER"
2071 elif test $install_gold_as_default = yes \
2072 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2073 && test -f ../gold/Makefile \
2074 && test x$build = x$host; then
2075 gcc_cv_ld=../gold/ld-new$build_exeext
2076 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2077 && test -f ../ld/Makefile \
2078 && test x$build = x$host; then
2079 gcc_cv_ld=../ld/ld-new$build_exeext
2080 elif test -x collect-ld$build_exeext; then
2081 # Build using linker in the current directory.
2082 gcc_cv_ld=./collect-ld$build_exeext
2083 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2084 gcc_cv_ld="$LD_FOR_TARGET"
2086 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2089 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2090 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2091 # if the PLUGIN_LD is set ld-new, just have it as ld
2092 # as that is the installed named.
2093 if test x$PLUGIN_LD_SUFFIX = xld-new \
2094 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2097 AC_ARG_WITH(plugin-ld,
2098 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2099 [if test x"$withval" != x; then
2100 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2101 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2103 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2104 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2106 # Check to see if we are using gold instead of ld
2107 AC_MSG_CHECKING(whether we are using gold)
2109 if test x$gcc_cv_ld != x; then
2110 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2111 | grep "GNU gold" > /dev/null; then
2115 AC_MSG_RESULT($ld_is_gold)
2117 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2118 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2119 case "$ORIGINAL_LD_FOR_TARGET" in
2120 ./collect-ld | ./collect-ld$build_exeext) ;;
2121 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2124 AC_MSG_CHECKING(what linker to use)
2125 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2126 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2127 # Single tree build which includes ld. We want to prefer it
2128 # over whatever linker top-level may have detected, since
2129 # we'll use what we're building after installation anyway.
2130 AC_MSG_RESULT(newly built ld)
2132 in_tree_ld_is_elf=no
2133 if (grep 'EMUL = .*elf' ../ld/Makefile \
2134 || grep 'EMUL = .*linux' ../ld/Makefile \
2135 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2136 in_tree_ld_is_elf=yes
2137 elif test "$ld_is_gold" = yes; then
2138 in_tree_ld_is_elf=yes
2140 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
2143 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2144 if test x$gcc_cv_gld_version != x; then
2148 case $gcc_cv_gld_version in
2151 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2154 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2155 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2157 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2158 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2160 AC_MSG_RESULT($gcc_cv_ld)
2162 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2163 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2164 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2167 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2168 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2170 # Figure out what nm we will be using.
2171 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2172 AS_VAR_SET_IF(gcc_cv_nm,, [
2173 if test -f $gcc_cv_binutils_srcdir/configure.in \
2174 && test -f ../binutils/Makefile \
2175 && test x$build = x$host; then
2176 gcc_cv_nm=../binutils/nm-new$build_exeext
2177 elif test -x nm$build_exeext; then
2178 gcc_cv_nm=./nm$build_exeext
2179 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2180 gcc_cv_nm="$NM_FOR_TARGET"
2182 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2185 AC_MSG_CHECKING(what nm to use)
2186 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2187 # Single tree build which includes binutils.
2188 AC_MSG_RESULT(newly built nm)
2191 AC_MSG_RESULT($gcc_cv_nm)
2195 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2196 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2197 case "$ORIGINAL_NM_FOR_TARGET" in
2198 ./nm | ./nm$build_exeext) ;;
2199 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2203 # Figure out what objdump we will be using.
2204 AS_VAR_SET_IF(gcc_cv_objdump,, [
2205 if test -f $gcc_cv_binutils_srcdir/configure.in \
2206 && test -f ../binutils/Makefile \
2207 && test x$build = x$host; then
2208 # Single tree build which includes binutils.
2209 gcc_cv_objdump=../binutils/objdump$build_exeext
2210 elif test -x objdump$build_exeext; then
2211 gcc_cv_objdump=./objdump$build_exeext
2212 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2213 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2215 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2218 AC_MSG_CHECKING(what objdump to use)
2219 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2220 # Single tree build which includes binutils.
2221 AC_MSG_RESULT(newly built objdump)
2222 elif test x$gcc_cv_objdump = x; then
2223 AC_MSG_RESULT(not found)
2225 AC_MSG_RESULT($gcc_cv_objdump)
2228 # Figure out what readelf we will be using.
2229 AS_VAR_SET_IF(gcc_cv_readelf,, [
2230 if test -f $gcc_cv_binutils_srcdir/configure.in \
2231 && test -f ../binutils/Makefile \
2232 && test x$build = x$host; then
2233 # Single tree build which includes binutils.
2234 gcc_cv_readelf=../binutils/readelf$build_exeext
2235 elif test -x readelf$build_exeext; then
2236 gcc_cv_readelf=./readelf$build_exeext
2238 AC_PATH_PROG(gcc_cv_readelf, readelf)
2241 AC_MSG_CHECKING(what readelf to use)
2242 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2243 # Single tree build which includes binutils.
2244 AC_MSG_RESULT(newly built readelf)
2245 elif test x$gcc_cv_readelf = x; then
2246 AC_MSG_RESULT(not found)
2248 AC_MSG_RESULT($gcc_cv_readelf)
2251 # Figure out what assembler alignment features are present.
2252 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2256 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2257 [Define if your assembler supports .balign and .p2align.])])
2259 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2262 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2263 [Define if your assembler supports specifying the maximum number
2264 of bytes to skip when using the GAS .p2align command.])])
2266 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2269 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2270 [Define if your assembler supports .literal16.])])
2272 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2274 [conftest_label1: .word 0
2276 conftest_label2: .word 0
2278 [if test x$gcc_cv_nm != x; then
2279 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2280 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2281 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2283 else gcc_cv_as_subsection_m1=yes
2285 rm -f conftest.nm1 conftest.nm2
2287 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2288 [Define if your assembler supports .subsection and .subsection -1 starts
2289 emitting at the beginning of your section.])])
2291 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2294 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2296 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2298 [ .weakref foobar, barfnot],,
2299 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2301 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2304 .NSUBSPA $CODE$,COMDAT],,
2305 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2307 # .hidden needs to be supported in both the assembler and the linker,
2308 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2309 # This is irritatingly difficult to feature test for; we have to check the
2310 # date string after the version number. If we've got an in-tree
2311 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2313 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2314 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2318 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2319 # STV_HIDDEN, so disable .hidden support if so.
2321 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2322 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2323 cat > conftest.s <<EOF
2330 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2331 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2332 grep '\.hidden default' > /dev/null; then
2335 gcc_cv_as_hidden=yes
2338 # Assume bug is present if objdump is missing.
2343 gcc_cv_as_hidden=yes
2348 # Darwin as has some visibility support, though with a different syntax.
2349 gcc_cv_as_hidden=yes
2353 # gnu_indirect_function type is an extension proposed at
2354 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2355 # selection of function implementation
2356 AC_ARG_ENABLE(gnu-indirect-function,
2357 [AS_HELP_STRING([--enable-gnu-indirect-function],
2358 [enable the use of the @gnu_indirect_function to glibc systems])],
2359 [case $enable_gnu_indirect_function in
2361 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2362 Valid choices are 'yes' and 'no'.]) ;;
2364 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2366 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2367 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2368 [Define if your system supports gnu indirect functions.])
2372 if test $in_tree_ld != yes ; then
2373 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2374 if echo "$ld_ver" | grep GNU > /dev/null; then
2375 if test x"$ld_is_gold" = xyes; then
2376 # GNU gold --version looks like this:
2378 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2380 # We extract the binutils version which is more familiar and specific
2381 # than the gold version.
2382 ld_vers=`echo $ld_ver | sed -n \
2383 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2385 # GNU ld --version looks like this:
2387 # GNU ld (GNU Binutils) 2.21.51.20110225
2388 ld_vers=`echo $ld_ver | sed -n \
2389 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2391 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2392 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2393 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2394 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2398 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2401 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2402 # /usr/ccs/bin/ld has been configured.
2403 ld_ver=`$gcc_cv_ld -V 2>&1`
2404 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2405 ld_vers=`echo $ld_ver | sed -n \
2406 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2407 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2408 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2416 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2417 [[if test $in_tree_ld = yes ; then
2419 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2420 && test $in_tree_ld_is_elf = yes; then
2421 gcc_cv_ld_hidden=yes
2424 gcc_cv_ld_hidden=yes
2425 if test x"$ld_is_gold" = xyes; then
2427 elif echo "$ld_ver" | grep GNU > /dev/null; then
2429 mmix-knuth-mmixware)
2430 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2434 if test 0"$ld_date" -lt 20020404; then
2435 if test -n "$ld_date"; then
2436 # If there was date string, but was earlier than 2002-04-04, fail
2438 elif test -z "$ld_vers"; then
2439 # If there was no date string nor ld version number, something is wrong
2442 test -z "$ld_vers_patch" && ld_vers_patch=0
2443 if test "$ld_vers_major" -lt 2; then
2445 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2446 gcc_cv_ld_hidden="no"
2447 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2455 # Darwin ld has some visibility support.
2456 gcc_cv_ld_hidden=yes
2458 hppa64*-*-hpux* | ia64*-*-hpux*)
2459 gcc_cv_ld_hidden=yes
2461 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2462 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2463 # .symbolic was only added in Solaris 9 12/02.
2464 gcc_cv_ld_hidden=yes
2472 libgcc_visibility=no
2473 AC_SUBST(libgcc_visibility)
2474 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2475 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2476 libgcc_visibility=yes
2477 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2478 [Define if your assembler and linker support .hidden.])
2481 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2482 gcc_cv_ld_ro_rw_mix=unknown
2483 if test $in_tree_ld = yes ; then
2484 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2485 && test $in_tree_ld_is_elf = yes; then
2486 gcc_cv_ld_ro_rw_mix=read-write
2488 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2489 echo '.section myfoosect, "a"' > conftest1.s
2490 echo '.section myfoosect, "aw"' > conftest2.s
2491 echo '.byte 1' >> conftest2.s
2492 echo '.section myfoosect, "a"' > conftest3.s
2493 echo '.byte 0' >> conftest3.s
2494 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2495 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2496 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2497 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2498 conftest2.o conftest3.o > /dev/null 2>&1; then
2499 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2500 | sed -e '/myfoosect/!d' -e N`
2501 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2502 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2503 gcc_cv_ld_ro_rw_mix=read-only
2505 gcc_cv_ld_ro_rw_mix=read-write
2510 rm -f conftest.* conftest[123].*
2513 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2514 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2515 [Define if your linker links a mix of read-only
2516 and read-write sections into a read-write section.])
2518 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2520 gcc_AC_INITFINI_ARRAY
2522 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2523 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2531 [[# GAS versions before 2.11 do not support uleb128,
2532 # despite appearing to.
2533 # ??? There exists an elf-specific test that will crash
2534 # the assembler. Perhaps it's better to figure out whether
2535 # arbitrary sections are supported and try the test.
2536 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2537 if echo "$as_ver" | grep GNU > /dev/null; then
2538 as_vers=`echo $as_ver | sed -n \
2539 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2540 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2541 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2542 if test $as_major -eq 2 && test $as_minor -lt 11
2544 else gcc_cv_as_leb128=yes
2547 [AC_DEFINE(HAVE_AS_LEB128, 1,
2548 [Define if your assembler supports .sleb128 and .uleb128.])])
2550 # Check if we have assembler support for unwind directives.
2551 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2558 .cfi_escape 1, 2, 3, 4, 5
2562 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2563 # read-only and read-write sections, we need to make sure that the
2564 # assembler used emits read-write .eh_frame sections.
2565 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2566 if test "x$gcc_cv_objdump" != x; then
2567 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2568 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2569 gcc_cv_as_cfi_directive=no
2572 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2573 # On Solaris/x86, make sure that GCC and gas agree on using
2574 # read-only .eh_frame sections for 64-bit.
2575 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2576 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2577 sed -e /.eh_frame/!d -e N | \
2578 grep READONLY > /dev/null; then
2579 gcc_cv_as_cfi_directive=yes
2581 gcc_cv_as_cfi_directive=no
2585 gcc_cv_as_cfi_directive=yes
2590 # no objdump, err on the side of caution
2591 gcc_cv_as_cfi_directive=no
2594 gcc_cv_as_cfi_directive=yes
2598 gcc_cv_as_cfi_directive=yes
2601 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2602 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2606 .cfi_adjust_cfa_offset 64
2608 .cfi_adjust_cfa_offset 128
2611 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2612 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2613 gcc_cv_as_cfi_advance_working=yes
2617 # no objdump, err on the side of caution
2618 gcc_cv_as_cfi_advance_working=no
2620 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2621 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2622 [`if test $gcc_cv_as_cfi_directive = yes \
2623 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2624 [Define 0/1 if your assembler supports CFI directives.])
2626 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2627 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2628 gcc_cv_as_cfi_personality_directive, ,,
2631 .cfi_personality 0, symbol
2633 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2634 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2635 then echo 1; else echo 0; fi`],
2636 [Define 0/1 if your assembler supports .cfi_personality.])
2638 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2639 gcc_cv_as_cfi_sections_directive, ,,
2641 .cfi_sections .debug_frame, .eh_frame
2645 win32 | pe | cygwin* | mingw32* | uwin*)
2646 # Need to check that we generated the correct relocation for the
2647 # .debug_frame section. This was fixed for binutils 2.21.
2648 gcc_cv_as_cfi_sections_directive=no
2649 if test "x$gcc_cv_objdump" != x; then
2650 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2651 grep secrel > /dev/null; then
2652 gcc_cv_as_cfi_sections_directive=yes
2657 gcc_cv_as_cfi_sections_directive=yes
2660 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2661 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2662 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2663 then echo 1; else echo 0; fi`],
2664 [Define 0/1 if your assembler supports .cfi_sections.])
2666 # GAS versions up to and including 2.11.0 may mis-optimize
2668 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2676 .section .eh_frame,"aw",@progbits
2678 .4byte .LECIE1-.LSCIE1
2692 .4byte .LEFDE1-.LASFDE1
2694 .4byte .LASFDE1-__FRAME_BEGIN__
2702 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2703 cat > conftest.lit <<EOF
2704 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2705 0010 01000000 12000000 18000000 00000000 ................
2706 0020 08000000 04080000 0044 .........D @&t@
2708 cat > conftest.big <<EOF
2709 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2710 0010 00000001 00000012 00000018 00000000 ................
2711 0020 00000008 04000000 0844 .........D @&t@
2713 # If the assembler didn't choke, and we can objdump,
2714 # and we got the correct data, then succeed.
2715 # The text in the here-document typically retains its unix-style line
2716 # endings, while the output of objdump will use host line endings.
2717 # Therefore, use diff -b for the comparisons.
2718 if test x$gcc_cv_objdump != x \
2719 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2720 | tail -3 > conftest.got \
2721 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2722 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2724 gcc_cv_as_eh_frame=yes
2725 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2726 gcc_cv_as_eh_frame=buggy
2728 # Uh oh, what do we do now?
2729 gcc_cv_as_eh_frame=no
2732 if test $gcc_cv_as_eh_frame = buggy; then
2733 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2734 [Define if your assembler mis-optimizes .eh_frame data.])
2737 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2738 [elf,2,12,0], [--fatal-warnings],
2739 [.section .rodata.str, "aMS", @progbits, 1])
2740 if test $gcc_cv_as_shf_merge = no; then
2741 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2742 [elf,2,12,0], [--fatal-warnings],
2743 [.section .rodata.str, "aMS", %progbits, 1])
2745 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2746 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2747 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2749 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2750 gcc_cv_as_comdat_group,
2751 [elf,2,16,0], [--fatal-warnings],
2752 [.section .text,"axG",@progbits,.foo,comdat])
2753 if test $gcc_cv_as_comdat_group = yes; then
2754 gcc_cv_as_comdat_group_percent=no
2755 gcc_cv_as_comdat_group_group=no
2757 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2758 gcc_cv_as_comdat_group_percent,
2759 [elf,2,16,0], [--fatal-warnings],
2760 [.section .text,"axG",%progbits,.foo,comdat])
2761 if test $gcc_cv_as_comdat_group_percent = yes; then
2762 gcc_cv_as_comdat_group_group=no
2764 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2765 gcc_cv_as_comdat_group_group=no
2768 # Sun as uses a completely different syntax.
2773 .group foo,".text%foo",#comdat
2774 .section ".text%foo", #alloc,#execinstr,#progbits
2779 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2781 .group foo,.text%foo,#comdat
2782 .section .text%foo, "ax", @progbits
2788 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2789 gcc_cv_as_comdat_group_group,
2795 if test x"$ld_is_gold" = xyes; then
2797 elif test $in_tree_ld = yes ; then
2799 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2800 && test $in_tree_ld_is_elf = yes; then
2803 elif echo "$ld_ver" | grep GNU > /dev/null; then
2805 if test 0"$ld_date" -lt 20050308; then
2806 if test -n "$ld_date"; then
2807 # If there was date string, but was earlier than 2005-03-08, fail
2809 elif test "$ld_vers_major" -lt 2; then
2811 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2818 *-*-solaris2.1[1-9]*)
2820 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2821 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2824 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2825 # least ld version 1.2267.
2826 if test "$ld_vers_major" -gt 1; then
2828 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2830 elif test "$ld_vers_minor" -ge 2267; then
2835 # Assume linkers other than GNU ld don't support COMDAT group.
2841 # Allow overriding the automatic COMDAT group tests above.
2842 AC_ARG_ENABLE(comdat,
2843 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2844 [comdat_group="$enable_comdat"])
2845 if test $comdat_group = no; then
2846 gcc_cv_as_comdat_group=no
2847 gcc_cv_as_comdat_group_percent=no
2848 gcc_cv_as_comdat_group_group=no
2850 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2851 [`if test $gcc_cv_as_comdat_group = yes \
2852 || test $gcc_cv_as_comdat_group_percent = yes \
2853 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2854 [Define 0/1 if your assembler and linker support COMDAT groups.])
2856 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2857 gcc_cv_as_discriminator,
2861 .loc 1 1 0 discriminator 1],,
2862 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2863 [Define if your assembler supports the .loc discriminator sub-directive.])])
2865 # Thread-local storage - the check is heavily parameterized.
2874 .section ".tdata","awT",@progbits
2877 ldq $27,__tls_get_addr($29) !literal!1
2878 lda $16,foo($29) !tlsgd!1
2879 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2880 ldq $27,__tls_get_addr($29) !literal!2
2881 lda $16,foo($29) !tlsldm!2
2882 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2883 ldq $1,foo($29) !gotdtprel
2884 ldah $2,foo($29) !dtprelhi
2885 lda $3,foo($2) !dtprello
2886 lda $4,foo($29) !dtprel
2887 ldq $1,foo($29) !gottprel
2888 ldah $2,foo($29) !tprelhi
2889 lda $3,foo($2) !tprello
2890 lda $4,foo($29) !tprel'
2893 tls_as_opt=--fatal-warnings
2895 cris-*-*|crisv32-*-*)
2897 .section ".tdata","awT",@progbits
2904 tls_as_opt=--fatal-warnings
2908 .section ".tdata","awT",@progbits
2920 .section ".tdata","awT",@progbits
2924 addil LT%foo-$tls_gdidx$,gp
2925 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2928 addil LT%foo-$tls_ldidx$,gp
2930 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2931 addil LR%foo-$tls_dtpoff$,%ret0
2932 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2934 addil LT%foo-$tls_ieoff$,gp
2935 ldw RT%foo-$tls_ieoff$(%r1),%t2
2938 addil LR%foo-$tls_leoff$,%t1
2939 ldo RR%foo-$tls_leoff$(%r1),%t2'
2942 tls_as_opt=--fatal-warnings
2946 .section ".tdata","awT",%progbits
2957 i[34567]86-*-* | x86_64-*-*)
2959 i[34567]86-*-solaris2.*)
2961 tga_func=___tls_get_addr
2963 x86_64-*-solaris2.1[0-9]*)
2965 tga_func=__tls_get_addr
2971 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2973 .section .tdata,"awt",@progbits'
2978 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2979 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2983 .section ".tdata","awT",@progbits'
2987 tls_as_opt="--fatal-warnings"
2991 conftest_s="$conftest_s
2995 leal foo@tlsgd(,%ebx,1), %eax
2996 leal foo@tlsldm(%ebx), %eax
2997 leal foo@dtpoff(%eax), %edx
2998 movl foo@gottpoff(%ebx), %eax
2999 subl foo@gottpoff(%ebx), %eax
3000 addl foo@gotntpoff(%ebx), %eax
3001 movl foo@indntpoff, %eax
3002 movl \$foo@tpoff, %eax
3003 subl \$foo@tpoff, %eax
3004 leal foo@ntpoff(%ecx), %eax"
3007 if test x$on_solaris = xyes; then
3009 yes) tls_as_opt="$tls_as_opt --64" ;;
3010 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3013 conftest_s="$conftest_s
3017 leaq foo@tlsgd(%rip), %rdi
3018 leaq foo@tlsld(%rip), %rdi
3019 leaq foo@dtpoff(%rax), %rdx
3020 movq foo@gottpoff(%rip), %rax
3021 movq \$foo@tpoff, %rax"
3027 .section ".tdata","awT",@progbits
3030 addl r16 = @ltoff(@dtpmod(foo#)), gp
3031 addl r17 = @ltoff(@dtprel(foo#)), gp
3032 addl r18 = @ltoff(@tprel(foo#)), gp
3033 addl r19 = @dtprel(foo#), gp
3034 adds r21 = @dtprel(foo#), r13
3035 movl r23 = @dtprel(foo#)
3036 addl r20 = @tprel(foo#), gp
3037 adds r22 = @tprel(foo#), r13
3038 movl r24 = @tprel(foo#)'
3041 tls_as_opt=--fatal-warnings
3045 .section .tdata,"awT",@progbits
3049 addik r5,r20,x@TLSGD
3050 addik r5,r20,x@TLSLDM'
3053 tls_as_opt='--fatal-warnings'
3057 .section .tdata,"awT",@progbits
3061 addiu $4, $28, %tlsgd(x)
3062 addiu $4, $28, %tlsldm(x)
3063 lui $4, %dtprel_hi(x)
3064 addiu $4, $4, %dtprel_lo(x)
3065 lw $4, %gottprel(x)($28)
3066 lui $4, %tprel_hi(x)
3067 addiu $4, $4, %tprel_lo(x)'
3070 tls_as_opt='-32 --fatal-warnings'
3074 .section .tdata,"awT",@progbits
3079 move.l x@TLSGD(%a5),%a0
3080 move.l x@TLSLDM(%a5),%a0
3081 move.l x@TLSLDO(%a5),%a0
3082 move.l x@TLSIE(%a5),%a0
3083 move.l x@TLSLE(%a5),%a0'
3086 tls_as_opt='--fatal-warnings'
3090 .section ".tdata","awT",@progbits'
3093 tls_as_opt="--fatal-warnings"
3097 .section ".tdata","awT",%progbits
3101 add x0, x0, #:tlsgd_lo12:x
3106 tls_as_opt='--fatal-warnings'
3110 .extern __get_tpointer
3128 .section ".tdata","awT",@progbits
3136 addi 3,2,ld0@got@tlsgd
3142 addi 3,2,x1@got@tlsld
3148 addis 9,3,x2@dtprel@ha
3149 addi 9,9,x2@dtprel@l
3152 ld 9,x3@got@dtprel(2)
3158 tls_as_opt="-a64 --fatal-warnings"
3162 .section ".tdata","awT",@progbits
3170 addi 3,31,ld0@got@tlsgd
3172 addi 3,31,x1@got@tlsld
3175 addis 9,3,x2@dtprel@ha
3176 addi 9,9,x2@dtprel@l
3177 lwz 9,x3@got@tprel(31)
3180 addis 9,2,x2@tprel@ha
3181 addi 9,9,x2@tprel@l'
3184 tls_as_opt="-a32 --fatal-warnings"
3188 .section ".tdata","awT",@progbits
3197 l %r1,foo@GOTNTPOFF(%r12)
3198 l %r1,0(%r1):tls_load:foo
3199 bas %r14,0(%r1,%r13):tls_gdcall:foo
3200 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3203 tls_as_opt="-m31 --fatal-warnings"
3207 .section ".tdata","awT",@progbits
3215 lg %r1,foo@GOTNTPOFF(%r12)
3216 larl %r1,foo@INDNTPOFF
3217 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3218 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3221 tls_as_opt="-m64 -Aesame --fatal-warnings"
3223 sh-*-* | sh[34]-*-*)
3225 .section ".tdata","awT",@progbits
3235 tls_as_opt=--fatal-warnings
3239 sparc*-sun-solaris2.*)
3241 tga_func=__tls_get_addr
3247 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3249 .section ".tdata",#alloc,#write,#tls'
3254 .section ".tdata","awT",@progbits'
3257 tls_as_opt="-32 --fatal-warnings"
3259 conftest_s="$conftest_s
3262 sethi %tgd_hi22(foo), %o0
3263 add %o0, %tgd_lo10(foo), %o1
3264 add %l7, %o1, %o0, %tgd_add(foo)
3265 call __tls_get_addr, %tgd_call(foo)
3266 sethi %tldm_hi22(foo), %l1
3267 add %l1, %tldm_lo10(foo), %l2
3268 add %l7, %l2, %o0, %tldm_add(foo)
3269 call __tls_get_addr, %tldm_call(foo)
3270 sethi %tldo_hix22(foo), %l3
3271 xor %l3, %tldo_lox10(foo), %l4
3272 add %o0, %l4, %l5, %tldo_add(foo)
3273 sethi %tie_hi22(foo), %o3
3274 add %o3, %tie_lo10(foo), %o3
3275 ld [%l7 + %o3], %o2, %tie_ld(foo)
3276 add %g7, %o2, %o4, %tie_add(foo)
3277 sethi %tle_hix22(foo), %l1
3278 xor %l1, %tle_lox10(foo), %o5
3279 ld [%g7 + %o5], %o1"
3283 .section ".tdata","awT",@progbits
3286 addli r0, zero, tls_gd(foo)
3287 auli r0, zero, tls_gd_ha16(foo)
3288 addli r0, r0, tls_gd_lo16(foo)
3290 addli r0, zero, tls_ie(foo)
3291 auli r0, r0, tls_ie_ha16(foo)
3292 addli r0, r0, tls_ie_lo16(foo)'
3295 tls_as_opt="--fatal-warnings"
3299 .section ".tdata","awT",@progbits
3302 shl16insli r0, zero, hw0_last_tls_gd(foo)
3303 shl16insli r0, zero, hw1_last_tls_gd(foo)
3304 shl16insli r0, r0, hw0_tls_gd(foo)
3306 shl16insli r0, zero, hw1_last_tls_ie(foo)
3307 shl16insli r0, r0, hw0_tls_ie(foo)'
3310 tls_as_opt="--fatal-warnings"
3314 .section ".tdata","awT",@progbits
3317 movi a8, foo@TLSFUNC
3318 movi a10, foo@TLSARG
3319 callx8.tls a8, foo@TLSCALL'
3326 if test "x$enable_tls" = xno ; then
3327 : # TLS explicitly disabled.
3328 elif test "x$enable_tls" = xyes ; then
3329 set_have_as_tls=yes # TLS explicitly enabled.
3330 elif test -z "$tls_first_major"; then
3331 : # If we don't have a check, assume no support.
3333 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3334 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3335 [set_have_as_tls=yes])
3338 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3339 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3340 # Sun style that Sun ld and GCC don't support any longer.
3342 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3344 # Check ld and ld.so.1 TLS support.
3345 if echo "$ld_ver" | grep GNU > /dev/null; then
3346 # Assume all interesting versions of GNU ld have TLS support.
3347 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3351 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3353 min_tls_ld_vers_minor=374
3355 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3356 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3357 min_tls_ld_vers_minor=343
3360 if test "$ld_vers_major" -gt 1 || \
3361 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3367 AC_MSG_RESULT($ld_tls_support)
3370 save_LDFLAGS="$LDFLAGS"
3374 AC_MSG_CHECKING(library containing $tga_func)
3375 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3376 # (32-bit x86) only lived in libthread, so check for that. Keep
3377 # set_have_as_tls if found, disable if not.
3378 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3380 # Clear LIBS if we cannot support TLS.
3381 if test $set_have_as_tls = no; then
3384 # Always define LIB_TLS_SPEC, even without TLS support.
3385 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3386 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3387 AC_MSG_RESULT($LIBS)
3390 LDFLAGS="$save_LDFLAGS"
3393 if test $set_have_as_tls = yes ; then
3394 AC_DEFINE(HAVE_AS_TLS, 1,
3395 [Define if your assembler and linker support thread-local storage.])
3398 # Target-specific assembler checks.
3400 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3401 gcc_cv_ld_static_dynamic=no
3402 gcc_cv_ld_static_option='-Bstatic'
3403 gcc_cv_ld_dynamic_option='-Bdynamic'
3404 if test $in_tree_ld = yes ; then
3405 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3406 gcc_cv_ld_static_dynamic=yes
3408 elif test x$gcc_cv_ld != x; then
3409 # Check if linker supports -Bstatic/-Bdynamic option
3410 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3411 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3412 gcc_cv_ld_static_dynamic=yes
3415 # AIX ld uses -b flags
3416 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3417 gcc_cv_ld_static_dynamic=yes
3418 gcc_cv_ld_static_option="-bstatic"
3419 gcc_cv_ld_dynamic_option="-bdynamic"
3421 # HP-UX ld uses -a flags to select between shared and archive.
3423 if test x"$gnu_ld" = xno; then
3424 gcc_cv_ld_static_dynamic=yes
3425 gcc_cv_ld_static_option="-aarchive_shared"
3426 gcc_cv_ld_dynamic_option="-adefault"
3429 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3431 gcc_cv_ld_static_dynamic=yes
3436 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3437 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3438 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3439 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3440 [Define to the linker option to disable use of shared objects.])
3441 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3442 [Define to the linker option to enable use of shared objects.])
3444 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3446 if test x"$demangler_in_ld" = xyes; then
3447 AC_MSG_CHECKING(linker --demangle support)
3448 gcc_cv_ld_demangle=no
3449 if test $in_tree_ld = yes; then
3450 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3451 gcc_cv_ld_demangle=yes
3453 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3454 # Check if the GNU linker supports --demangle option
3455 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3456 gcc_cv_ld_demangle=yes
3459 if test x"$gcc_cv_ld_demangle" = xyes; then
3460 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3461 [Define if your linker supports --demangle option.])
3463 AC_MSG_RESULT($gcc_cv_ld_demangle)
3466 AC_MSG_CHECKING(linker plugin support)
3468 if test -f liblto_plugin.la; then
3469 save_ld_ver="$ld_ver"
3470 save_ld_vers_major="$ld_vers_major"
3471 save_ld_vers_minor="$ld_vers_minor"
3472 save_ld_is_gold="$ld_is_gold"
3476 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3478 # FIXME: ld_is_gold?
3479 ld_vers_major="$gcc_cv_gld_major_version"
3480 ld_vers_minor="$gcc_cv_gld_minor_version"
3482 # Determine plugin linker version.
3483 # FIXME: Partial duplicate from above, generalize.
3485 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3486 if echo "$ld_ver" | grep GNU > /dev/null; then
3487 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3489 ld_vers=`echo $ld_ver | sed -n \
3490 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3492 ld_vers=`echo $ld_ver | sed -n \
3493 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3495 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3496 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3501 # Determine plugin support.
3502 if echo "$ld_ver" | grep GNU > /dev/null; then
3503 # Require GNU ld or gold 2.21+ for plugin support by default.
3504 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3506 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3507 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3512 ld_ver="$save_ld_ver"
3513 ld_vers_major="$save_ld_vers_major"
3514 ld_vers_minor="$save_ld_vers_minor"
3515 ld_is_gold="$save_ld_is_gold"
3517 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3518 [Define to the level of your linker's plugin support.])
3519 AC_MSG_RESULT($gcc_cv_lto_plugin)
3523 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3524 [-mabi=lp64], [.text],,,)
3525 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3526 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3527 [Define if your assembler supports the -mabi option.])
3529 if test x$with_abi = xilp32; then
3530 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3531 Upgrade the Assembler.])
3533 if test x"$with_multilib_list" = xdefault; then
3534 TM_MULTILIB_CONFIG=lp64
3536 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3537 for aarch64_multilib in ${aarch64_multilibs}; do
3538 case ${aarch64_multilib} in
3540 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3541 Upgrade the Assembler.])
3551 # All TARGET_ABI_OSF targets.
3552 alpha*-*-linux* | alpha*-*-*bsd*)
3553 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3554 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3557 extbl $3, $2, $3 !lituse_bytoff!1
3558 ldq $2, a($29) !literal!1
3559 ldq $4, b($29) !literal!2
3560 ldq_u $3, 0($2) !lituse_base!1
3561 ldq $27, f($29) !literal!5
3562 jsr $26, ($27), f !lituse_jsr!5
3563 ldah $29, 0($26) !gpdisp!3
3564 lda $0, c($29) !gprel
3565 ldah $1, d($29) !gprelhigh
3566 lda $1, d($1) !gprellow
3567 lda $29, 0($29) !gpdisp!3],,
3568 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3569 [Define if your assembler supports explicit relocations.])])
3570 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3571 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3574 ldq $27, a($29) !literal!1
3575 jsr $26, ($27), a !lituse_jsrdirect!1],,
3576 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3577 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3581 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3582 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3583 [-no-mul-bug-abort], [.text],,
3584 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3585 [Define if your assembler supports the -no-mul-bug-abort option.])])
3589 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3590 [.register %g2, #scratch],,
3591 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3592 [Define if your assembler supports .register.])])
3594 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3595 [.section "nobits",#alloc,#write,#nobits
3596 .section "progbits",#alloc,#write,#progbits])
3597 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3598 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3599 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3601 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3603 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3604 [Define if your assembler supports -relax option.])])
3606 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3607 gcc_cv_as_sparc_gotdata_op,,
3614 sethi %gdop_hix22(foo), %g1
3615 xor %g1, %gdop_lox10(foo), %g1
3616 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3617 [if test x$gcc_cv_ld != x \
3618 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3619 if test x$gcc_cv_objdump != x; then
3620 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3621 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3622 gcc_cv_as_sparc_gotdata_op=no
3624 gcc_cv_as_sparc_gotdata_op=yes
3629 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3630 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3632 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3633 gcc_cv_as_sparc_ua_pcrel,,
3641 .uaword %r_disp32(foo)],
3642 [if test x$gcc_cv_ld != x \
3643 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3644 gcc_cv_as_sparc_ua_pcrel=yes
3647 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3648 [Define if your assembler and linker support unaligned PC relative relocs.])
3650 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3651 gcc_cv_as_sparc_ua_pcrel_hidden,,
3656 .uaword %r_disp32(foo)
3657 .byte 0x32, 0x33, 0x34
3662 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3663 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3664 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3665 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3666 if $gcc_cv_objdump -R conftest 2> /dev/null \
3667 | grep 'DISP32' > /dev/null 2>&1; then
3670 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3674 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3675 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3676 ]) # unaligned pcrel relocs
3678 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3679 gcc_cv_as_sparc_offsetable_lo10,,
3682 or %g1, %lo(ab) + 12, %g1
3683 or %g1, %lo(ab + 12), %g1],
3684 [if test x$gcc_cv_objdump != x \
3685 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3686 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3687 gcc_cv_as_sparc_offsetable_lo10=yes
3689 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3690 [Define if your assembler supports offsetable %lo().])])
3692 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3693 gcc_cv_as_sparc_fmaf,,
3696 .register %g2, #scratch
3697 .register %g3, #scratch
3699 fmaddd %f0, %f2, %f4, %f6
3700 addxccc %g1, %g2, %g3
3701 fsrl32 %f2, %f4, %f8
3702 fnaddd %f10, %f12, %f14],,
3703 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3704 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3706 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3707 gcc_cv_as_sparc_sparc4,,
3710 .register %g2, #scratch
3711 .register %g3, #scratch
3714 1: cwbneg %g2, %g3, 1f
3717 aes_kexpand0 %f4, %f6, %f8
3718 des_round %f38, %f40, %f42, %f44
3719 camellia_f %f54, %f56, %f58, %f60
3720 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3721 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3722 [Define if your assembler supports SPARC4 instructions.])])
3724 gcc_GAS_CHECK_FEATURE([LEON instructions],
3725 gcc_cv_as_sparc_leon,,
3728 .register %g2, #scratch
3729 .register %g3, #scratch
3733 cas [[%g2]], %g3, %g1],,
3734 [AC_DEFINE(HAVE_AS_LEON, 1,
3735 [Define if your assembler supports LEON instructions.])])
3739 i[34567]86-*-* | x86_64-*-*)
3743 # Full C++ conformance when using a shared libstdc++-v3 requires some
3744 # support from the Cygwin DLL, which in more recent versions exports
3745 # wrappers to aid in interposing and redirecting operators new, delete,
3746 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3747 # are configuring for a version of Cygwin that exports the wrappers.
3748 if test x$host = x$target && test x$host_cpu = xi686; then
3749 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3751 # Can't check presence of libc functions during cross-compile, so
3752 # we just have to assume we're building for an up-to-date target.
3753 gcc_ac_cygwin_dll_wrappers=yes
3755 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3756 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3757 [Define if you want to generate code by default that assumes that the
3758 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3761 cygwin* | pe | mingw32* | interix*)
3762 # Recent binutils allows the three-operand form of ".comm" on PE. This
3763 # definition is used unconditionally to initialise the default state of
3764 # the target option variable that governs usage of the feature.
3765 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3766 [2,19,52],,[.comm foo,1,32])
3767 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3768 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3769 [Define if your assembler supports specifying the alignment
3770 of objects allocated using the GAS .comm command.])
3771 # Used for DWARF 2 in PE
3772 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3773 gcc_cv_as_ix86_pe_secrel32,
3779 [if test x$gcc_cv_ld != x \
3780 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3781 gcc_cv_as_ix86_pe_secrel32=yes
3784 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3785 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3786 # Test if the assembler supports the extended form of the .section
3787 # directive that specifies section alignment. LTO support uses this,
3788 # but normally only after installation, so we warn but don't fail the
3789 # configure if LTO is enabled but the assembler does not support it.
3790 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3791 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3792 if test x$gcc_cv_as_section_has_align != xyes; then
3793 case ",$enable_languages," in
3795 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3799 # Test if the assembler supports the section flag 'e' for specifying
3800 # an excluded section.
3801 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3805 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3806 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3807 [Define if your assembler supports specifying the section flag e.])
3811 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3812 gcc_cv_as_ix86_filds,,,
3813 [filds mem; fists mem],,
3814 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3815 [Define if your assembler uses filds and fists mnemonics.])])
3817 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3818 gcc_cv_as_ix86_fildq,,,
3819 [fildq mem; fistpq mem],,
3820 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3821 [Define if your assembler uses fildq and fistq mnemonics.])])
3823 gcc_GAS_CHECK_FEATURE([cmov syntax],
3824 gcc_cv_as_ix86_cmov_sun_syntax,,,
3825 [cmovl.l %edx, %eax],,
3826 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3827 [Define if your assembler supports the Sun syntax for cmov.])])
3829 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3830 gcc_cv_as_ix86_ffreep,,,
3832 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3833 [Define if your assembler supports the ffreep mnemonic.])])
3835 gcc_GAS_CHECK_FEATURE([.quad directive],
3836 gcc_cv_as_ix86_quad,,,
3838 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3839 [Define if your assembler supports the .quad directive.])])
3841 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3842 gcc_cv_as_ix86_sahf,,,
3845 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3846 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3848 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3849 gcc_cv_as_ix86_interunit_movq,,,
3853 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3854 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3855 [Define if your assembler supports interunit movq mnemonic.])
3857 gcc_GAS_CHECK_FEATURE([hle prefixes],
3858 gcc_cv_as_ix86_hle,,,
3859 [lock xacquire cmpxchg %esi, (%ecx)],,
3860 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3861 [Define if your assembler supports HLE prefixes.])])
3863 gcc_GAS_CHECK_FEATURE([swap suffix],
3864 gcc_cv_as_ix86_swap,,,
3865 [movl.s %esp, %ebp],,
3866 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3867 [Define if your assembler supports the swap suffix.])])
3869 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3870 gcc_cv_as_ix86_diff_sect_delta,,,
3878 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3879 [Define if your assembler supports the subtraction of symbols in different sections.])])
3881 # These two are used unconditionally by i386.[ch]; it is to be defined
3882 # to 1 if the feature is present, 0 otherwise.
3883 as_ix86_gotoff_in_data_opt=
3884 if test x$gas = xyes; then
3885 as_ix86_gotoff_in_data_opt="--32"
3887 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3888 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3889 [$as_ix86_gotoff_in_data_opt],
3895 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3896 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3897 [Define true if the assembler supports '.long foo@GOTOFF'.])
3899 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3900 gcc_cv_as_ix86_rep_lock_prefix,,,
3906 lock addl %edi, (%eax,%esi)
3907 lock orl $0, (%esp)],,
3908 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3909 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3911 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3912 gcc_cv_as_ix86_ud2,,,
3914 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3915 [Define if your assembler supports the 'ud2' mnemonic.])])
3917 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3918 gcc_cv_as_ix86_tlsgdplt,,,
3919 [call tls_gd@tlsgdplt],
3920 [if test x$gcc_cv_ld != x \
3921 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3922 gcc_cv_as_ix86_tlsgdplt=yes
3925 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3926 [Define if your assembler and linker support @tlsgdplt.])])
3929 .section .tdata,"aw'$tls_section_flag'",@progbits
3931 .section .text,"ax",@progbits
3932 call tls_ld@tlsldmplt'
3933 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3934 gcc_cv_as_ix86_tlsldmplt,,,
3936 [if test x$gcc_cv_ld != x \
3937 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3938 gcc_cv_as_ix86_tlsldmplt=yes
3941 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
3942 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
3943 [Define to 1 if your assembler and linker support @tlsldmplt.])
3945 # Enforce 32-bit output with gas and gld.
3946 if test x$gas = xyes; then
3947 as_ix86_tls_ldm_opt="--32"
3949 if echo "$ld_ver" | grep GNU > /dev/null; then
3950 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
3951 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
3953 ld_ix86_tls_ldm_opt="-melf_i386"
3957 .section .text,"ax",@progbits
3959 .type _start, @function
3961 leal value@tlsldm(%ebx), %eax
3962 call ___tls_get_addr@plt
3964 .section .tdata,"aw'$tls_section_flag'",@progbits
3965 .type value, @object
3967 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
3968 gcc_cv_as_ix86_tlsldm,,
3969 [$as_ix86_tls_ldm_opt],
3971 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3972 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
3973 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
3974 || dis conftest 2>/dev/null | grep nop > /dev/null; then
3975 gcc_cv_as_ix86_tlsldm=yes
3979 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
3980 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
3981 [Define to 1 if your assembler and linker support @tlsldm.])
3986 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3987 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3989 addl r15 = @ltoffx(x#), gp
3991 ld8.mov r16 = [[r15]], x#],,
3992 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3993 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3999 *-*-aix*) conftest_s=' .machine "pwr5"
4003 gcc_GAS_CHECK_FEATURE([.machine directive support],
4004 gcc_cv_as_machine_directive,,,
4005 [ .machine ppc7400])
4006 if test x$gcc_cv_as_machine_directive != xyes; then
4007 echo "*** This target requires an assembler supporting \".machine\"" >&2
4008 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4009 test x$build = x$target && exit 1
4013 *) conftest_s=' .machine power4
4018 gcc_GAS_CHECK_FEATURE([mfcr field support],
4019 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4021 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4022 [Define if your assembler supports mfcr field.])])
4025 *-*-aix*) conftest_s=' .machine "pwr5"
4028 *) conftest_s=' .machine power5
4033 gcc_GAS_CHECK_FEATURE([popcntb support],
4034 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4036 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4037 [Define if your assembler supports popcntb field.])])
4040 *-*-aix*) conftest_s=' .machine "pwr5x"
4043 *) conftest_s=' .machine power5
4048 gcc_GAS_CHECK_FEATURE([fp round support],
4049 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4051 [AC_DEFINE(HAVE_AS_FPRND, 1,
4052 [Define if your assembler supports fprnd.])])
4055 *-*-aix*) conftest_s=' .machine "pwr6"
4058 *) conftest_s=' .machine power6
4063 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4064 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4066 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4067 [Define if your assembler supports mffgpr and mftgpr.])])
4070 *-*-aix*) conftest_s=' .csect .text[[PR]]
4072 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4076 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4077 *) conftest_s=' .text
4079 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4082 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4083 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4085 [AC_DEFINE(HAVE_AS_REL16, 1,
4086 [Define if your assembler supports R_PPC_REL16 relocs.])])
4089 *-*-aix*) conftest_s=' .machine "pwr6"
4092 *) conftest_s=' .machine power6
4097 gcc_GAS_CHECK_FEATURE([compare bytes support],
4098 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4100 [AC_DEFINE(HAVE_AS_CMPB, 1,
4101 [Define if your assembler supports cmpb.])])
4104 *-*-aix*) conftest_s=' .machine "pwr6"
4107 *) conftest_s=' .machine power6
4112 gcc_GAS_CHECK_FEATURE([decimal float support],
4113 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4115 [AC_DEFINE(HAVE_AS_DFP, 1,
4116 [Define if your assembler supports DFP instructions.])])
4119 *-*-aix*) conftest_s=' .machine "pwr7"
4122 *) conftest_s=' .machine power7
4127 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4128 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4130 [AC_DEFINE(HAVE_AS_VSX, 1,
4131 [Define if your assembler supports VSX instructions.])])
4134 *-*-aix*) conftest_s=' .machine "pwr7"
4137 *) conftest_s=' .machine power7
4142 gcc_GAS_CHECK_FEATURE([popcntd support],
4143 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4145 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4146 [Define if your assembler supports POPCNTD instructions.])])
4149 *-*-aix*) conftest_s=' .machine "pwr8"
4150 .csect .text[[PR]]';;
4151 *) conftest_s=' .machine power8
4155 gcc_GAS_CHECK_FEATURE([power8 support],
4156 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4158 [AC_DEFINE(HAVE_AS_POWER8, 1,
4159 [Define if your assembler supports POWER8 instructions.])])
4162 *-*-aix*) conftest_s=' .csect .text[[PR]]
4164 *) conftest_s=' .text
4168 gcc_GAS_CHECK_FEATURE([lwsync support],
4169 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4171 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4172 [Define if your assembler supports LWSYNC instructions.])])
4175 *-*-aix*) conftest_s=' .machine "476"
4178 *) conftest_s=' .machine "476"
4183 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4184 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4186 [AC_DEFINE(HAVE_AS_DCI, 1,
4187 [Define if your assembler supports the DCI/ICI instructions.])])
4189 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4190 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4191 [.gnu_attribute 4,1],,
4192 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4193 [Define if your assembler supports .gnu_attribute.])])
4195 gcc_GAS_CHECK_FEATURE([tls marker support],
4196 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4197 [ bl __tls_get_addr(x@tlsgd)],,
4198 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4199 [Define if your assembler supports arg info for __tls_get_addr.])])
4203 gcc_GAS_CHECK_FEATURE([.ref support],
4204 gcc_cv_as_aix_ref, [2,21,0],,
4205 [ .csect stuff[[rw]]
4211 [AC_DEFINE(HAVE_AS_REF, 1,
4212 [Define if your assembler supports .ref])])
4218 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4219 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4220 [ lw $4,%gp_rel(foo)($4)],,
4221 [if test x$target_cpu_default = x
4222 then target_cpu_default=MASK_EXPLICIT_RELOCS
4223 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4225 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4226 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4227 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4228 [Define if the assembler understands -mno-shared.])])
4230 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4231 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4232 [.gnu_attribute 4,1],,
4233 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4234 [Define if your assembler supports .gnu_attribute.])])
4236 gcc_GAS_CHECK_FEATURE([.micromips support],
4237 gcc_cv_as_micromips_support,,[--fatal-warnings],
4239 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4240 [Define if your assembler supports the .set micromips directive])])
4242 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4243 gcc_cv_as_mips_dtprelword, [2,18,0],,
4244 [.section .tdata,"awT",@progbits
4248 .dtprelword x+0x8000],,
4249 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4250 [Define if your assembler supports .dtprelword.])])
4252 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4253 gcc_cv_as_mips_dspr1_mult,,,
4263 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4264 [Define if your assembler supports DSPR1 mult.])])
4266 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4267 gcc_cv_as_ld_jalr_reloc=no
4268 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4269 if test $in_tree_ld = yes ; then
4270 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4271 && test $in_tree_ld_is_elf = yes; then
4272 gcc_cv_as_ld_jalr_reloc=yes
4274 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4275 echo ' .ent x' > conftest.s
4276 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4277 echo ' ld $25,%call16(y)($28)' >> conftest.s
4278 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4279 echo '1: jalr $25' >> conftest.s
4280 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4281 echo '1: jalr $25' >> conftest.s
4282 echo ' .end x' >> conftest.s
4283 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4284 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4285 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4286 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4287 gcc_cv_as_ld_jalr_reloc=yes
4293 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4294 if test x$target_cpu_default = x; then
4295 target_cpu_default=MASK_RELAX_PIC_CALLS
4297 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4300 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4302 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4303 [gcc_cv_ld_mips_personality_relaxation],
4304 [gcc_cv_ld_mips_personality_relaxation=no
4305 if test $in_tree_ld = yes ; then
4306 if test "$gcc_cv_gld_major_version" -eq 2 \
4307 -a "$gcc_cv_gld_minor_version" -ge 21 \
4308 -o "$gcc_cv_gld_major_version" -gt 2; then
4309 gcc_cv_ld_mips_personality_relaxation=yes
4311 elif test x$gcc_cv_as != x \
4312 -a x$gcc_cv_ld != x \
4313 -a x$gcc_cv_readelf != x ; then
4314 cat > conftest.s <<EOF
4316 .cfi_personality 0x80,indirect_ptr
4323 .section .data,"aw",@progbits
4327 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4328 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4329 if $gcc_cv_readelf -d conftest 2>&1 \
4330 | grep TEXTREL > /dev/null 2>&1; then
4332 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4333 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4336 gcc_cv_ld_mips_personality_relaxation=yes
4340 rm -f conftest.s conftest.o conftest])
4341 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4342 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4343 [Define if your linker can relax absolute .eh_frame personality
4344 pointers into PC-relative form.])
4347 gcc_GAS_CHECK_FEATURE([-mnan= support],
4348 gcc_cv_as_mips_nan,,
4350 [AC_DEFINE(HAVE_AS_NAN, 1,
4351 [Define if the assembler understands -mnan=.])])
4352 if test x$gcc_cv_as_mips_nan = xno \
4353 && test x$with_nan != x; then
4355 [Requesting --with-nan= requires assembler support for -mnan=])
4360 # Mips and HP-UX need the GNU assembler.
4361 # Linux on IA64 might be able to use the Intel assembler.
4364 mips*-*-* | *-*-hpux* )
4365 if test x$gas_flag = xyes \
4366 || test x"$host" != x"$build" \
4367 || test ! -x "$gcc_cv_as" \
4368 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4371 echo "*** This configuration requires the GNU assembler" >&2
4377 # ??? Not all targets support dwarf2 debug_line, even within a version
4378 # of gas. Moreover, we need to emit a valid instruction to trigger any
4379 # info to the output file. So, as supported targets are added to gas 2.11,
4380 # add some instruction here to (also) show we expect this might work.
4381 # ??? Once 2.11 is released, probably need to add first known working
4382 # version to the per-target configury.
4384 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4385 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4386 | xstormy16 | xtensa)
4396 if test x"$insn" != x; then
4398 .file 1 \"conftest.s\"
4401 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4402 gcc_cv_as_dwarf2_debug_line,
4403 [elf,2,11,0],, [$conftest_s],
4404 [if test x$gcc_cv_objdump != x \
4405 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4406 | grep debug_line > /dev/null 2>&1; then
4407 gcc_cv_as_dwarf2_debug_line=yes
4410 # The .debug_line file table must be in the exact order that
4411 # we specified the files, since these indices are also used
4412 # by DW_AT_decl_file. Approximate this test by testing if
4413 # the assembler bitches if the same index is assigned twice.
4414 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4415 gcc_cv_as_dwarf2_file_buggy,,,
4419 if test $gcc_cv_as_dwarf2_debug_line = yes \
4420 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4421 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4422 [Define if your assembler supports dwarf2 .file/.loc directives,
4423 and preserves file table indices exactly as given.])
4426 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4427 gcc_cv_as_gdwarf2_flag,
4428 [elf,2,11,0], [--gdwarf2], [$insn],,
4429 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4430 [Define if your assembler supports the --gdwarf2 option.])])
4432 gcc_GAS_CHECK_FEATURE([--gstabs option],
4433 gcc_cv_as_gstabs_flag,
4434 [elf,2,11,0], [--gstabs], [$insn],
4435 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4436 # and warns about it, but still exits successfully. So check for
4438 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4440 else gcc_cv_as_gstabs_flag=yes
4442 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4443 [Define if your assembler supports the --gstabs option.])])
4445 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4446 gcc_cv_as_debug_prefix_map_flag,
4447 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4448 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4449 [Define if your assembler supports the --debug-prefix-map option.])])
4452 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4455 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4456 [Define if your assembler supports .lcomm with an alignment field.])])
4458 if test x$with_sysroot = x && test x$host = x$target \
4459 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4460 && test "$prefix" != "NONE"; then
4461 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4462 [Define to PREFIX/include if cpp should also search that directory.])
4465 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4466 if test "x$with_headers" != x; then
4467 target_header_dir=$with_headers
4468 elif test "x$with_sysroot" = x; then
4469 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4470 elif test "x$with_build_sysroot" != "x"; then
4471 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4472 elif test "x$with_sysroot" = xyes; then
4473 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4475 target_header_dir="${with_sysroot}${native_system_header_dir}"
4478 target_header_dir=${native_system_header_dir}
4481 # Determine the version of glibc, if any, used on the target.
4482 AC_MSG_CHECKING([for target glibc version])
4483 AC_ARG_WITH([glibc-version],
4484 [AS_HELP_STRING([--with-glibc-version=M.N],
4485 [assume GCC used with glibc version M.N or later])], [
4486 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4487 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4488 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4490 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4492 glibc_version_major=0
4493 glibc_version_minor=0
4494 [if test -f $target_header_dir/features.h \
4495 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4496 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4497 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4498 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4500 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4502 AC_ARG_ENABLE(gnu-unique-object,
4503 [AS_HELP_STRING([--enable-gnu-unique-object],
4504 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4505 [case $enable_gnu_unique_object in
4507 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4508 Valid choices are 'yes' and 'no'.]) ;;
4510 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4512 [.type foo, '$target_type_format_char'gnu_unique_object],,
4513 # We need to unquote above to to use the definition from config.gcc.
4514 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4515 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4517 if test x$enable_gnu_unique_object = xyes; then
4518 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4519 [Define if your assembler supports @gnu_unique_object.])
4522 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4523 [gcc_cv_as_line_zero],
4524 [gcc_cv_as_line_zero=no
4525 if test $in_tree_gas = yes; then
4526 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4527 elif test "x$gcc_cv_as" != x; then
4528 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4529 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4530 test "x`cat conftest.out`" = x
4532 gcc_cv_as_line_zero=yes
4534 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4535 cat conftest.s >&AS_MESSAGE_LOG_FD
4536 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4537 cat conftest.out >&AS_MESSAGE_LOG_FD
4539 rm -f conftest.o conftest.s conftest.out
4541 if test "x$gcc_cv_as_line_zero" = xyes; then
4542 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4543 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4546 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4547 gcc_cv_ld_eh_frame_hdr=no
4548 if test $in_tree_ld = yes ; then
4549 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4550 && test $in_tree_ld_is_elf = yes; then
4551 gcc_cv_ld_eh_frame_hdr=yes
4553 elif test x$gcc_cv_ld != x; then
4554 if echo "$ld_ver" | grep GNU > /dev/null; then
4555 # Check if linker supports --eh-frame-hdr option
4556 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4557 gcc_cv_ld_eh_frame_hdr=yes
4562 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4563 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4564 gcc_cv_ld_eh_frame_hdr=yes
4570 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4571 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4572 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4573 [Define if your linker supports .eh_frame_hdr.])
4575 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4577 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4578 gcc_cv_ld_eh_frame_ciev3=no
4579 if test $in_tree_ld = yes ; then
4580 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4581 && test $in_tree_ld_is_elf = yes; then
4582 gcc_cv_ld_eh_frame_ciev3=yes
4584 elif test x$gcc_cv_ld != x; then
4585 if echo "$ld_ver" | grep GNU > /dev/null; then
4586 gcc_cv_ld_eh_frame_ciev3=yes
4587 if test 0"$ld_date" -lt 20040513; then
4588 if test -n "$ld_date"; then
4589 # If there was date string, but was earlier than 2004-05-13, fail
4590 gcc_cv_ld_eh_frame_ciev3=no
4591 elif test "$ld_vers_major" -lt 2; then
4592 gcc_cv_ld_eh_frame_ciev3=no
4593 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4594 gcc_cv_ld_eh_frame_ciev3=no
4600 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4601 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4602 gcc_cv_ld_eh_frame_ciev3=yes
4608 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4609 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4610 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4611 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4613 AC_MSG_CHECKING(linker position independent executable support)
4615 if test $in_tree_ld = yes ; then
4616 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4617 && test $in_tree_ld_is_elf = yes; then
4620 elif test x$gcc_cv_ld != x; then
4621 # Check if linker supports -pie option
4622 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4626 if test x"$gcc_cv_ld_pie" = xyes; then
4627 AC_DEFINE(HAVE_LD_PIE, 1,
4628 [Define if your linker supports -pie option.])
4630 AC_MSG_RESULT($gcc_cv_ld_pie)
4632 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4633 gcc_cv_ld_eh_gc_sections=no
4634 if test $in_tree_ld = yes ; then
4635 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4636 && test $in_tree_ld_is_elf = yes; then
4637 gcc_cv_ld_eh_gc_sections=yes
4639 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4640 cat > conftest.s <<EOF
4643 .type _start, @function
4646 .size _start, .-_start
4647 .section .text.foo,"ax",@progbits
4648 .type foo, @function
4652 .section .gcc_except_table.foo,"a",@progbits
4655 .section .eh_frame,"a",@progbits
4658 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4659 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4660 | grep "gc-sections option ignored" > /dev/null; then
4661 gcc_cv_ld_eh_gc_sections=no
4662 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4663 | grep gcc_except_table > /dev/null; then
4664 gcc_cv_ld_eh_gc_sections=yes
4665 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4666 if test x$gcc_cv_as_comdat_group != xyes; then
4667 gcc_cv_ld_eh_gc_sections=no
4668 cat > conftest.s <<EOF
4671 .type _start, @function
4674 .size _start, .-_start
4675 .section .gnu.linkonce.t.foo,"ax",@progbits
4676 .type foo, @function
4680 .section .gcc_except_table.foo,"a",@progbits
4683 .section .eh_frame,"a",@progbits
4686 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4687 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4688 | grep "gc-sections option ignored" > /dev/null; then
4689 gcc_cv_ld_eh_gc_sections=no
4690 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4691 | grep gcc_except_table > /dev/null; then
4692 gcc_cv_ld_eh_gc_sections=yes
4698 rm -f conftest.s conftest.o conftest
4702 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4703 gcc_cv_ld_eh_gc_sections=no
4706 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4707 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4708 [Define if your linker supports garbage collection of
4709 sections in presence of EH frames.])
4711 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4713 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4714 gcc_cv_ld_eh_gc_sections_bug=no
4715 if test $in_tree_ld = yes ; then
4716 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4717 && test $in_tree_ld_is_elf = yes; then
4718 gcc_cv_ld_eh_gc_sections_bug=yes
4720 elif test x$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
4721 gcc_cv_ld_eh_gc_sections_bug=yes
4722 cat > conftest.s <<EOF
4725 .type _start, @function
4728 .size _start, .-_start
4729 .section .text.startup.foo,"ax",@progbits
4730 .type foo, @function
4734 .section .gcc_except_table.foo,"a",@progbits
4737 .section .eh_frame,"a",@progbits
4740 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4741 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4742 | grep "gc-sections option ignored" > /dev/null; then
4744 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4745 | grep gcc_except_table > /dev/null; then
4746 gcc_cv_ld_eh_gc_sections_bug=no
4749 rm -f conftest.s conftest.o conftest
4751 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4752 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4753 [Define if your linker has buggy garbage collection of
4754 sections support when .text.startup.foo like sections are used.])
4756 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4762 AC_CACHE_CHECK(linker --as-needed support,
4763 gcc_cv_ld_as_needed,
4764 [gcc_cv_ld_as_needed=no
4765 gcc_cv_ld_as_needed_option='--as-needed'
4766 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4767 if test $in_tree_ld = yes ; then
4768 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4769 && test $in_tree_ld_is_elf = yes; then
4770 gcc_cv_ld_as_needed=yes
4772 elif test x$gcc_cv_ld != x; then
4773 # Check if linker supports --as-needed and --no-as-needed options
4774 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4775 gcc_cv_ld_as_needed=yes
4778 # Solaris 2 ld always supports -z ignore/-z record.
4780 gcc_cv_ld_as_needed=yes
4781 gcc_cv_ld_as_needed_option="-z ignore"
4782 gcc_cv_ld_no_as_needed_option="-z record"
4787 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4788 # dl_iterate_phdr, i.e. since Solaris 11.
4790 *-*-solaris2.1[[1-9]]*)
4792 i?86-*-* | x86_64-*-*)
4793 if echo "$ld_ver" | grep GNU > /dev/null; then
4794 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4795 gcc_cv_ld_as_needed=no
4801 gcc_cv_ld_as_needed=no
4805 if test x"$gcc_cv_ld_as_needed" = xyes; then
4806 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4807 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4808 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4809 [Define to the linker option to ignore unused dependencies.])
4810 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4811 [Define to the linker option to keep unused dependencies.])
4814 case "$target:$tm_file" in
4815 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4818 emul_name="-melf64lppc"
4821 emul_name="-melf64ppc"
4824 emul_name="-melf64ppc_fbsd"
4827 AC_CACHE_CHECK(linker support for omitting dot symbols,
4828 gcc_cv_ld_no_dot_syms,
4829 [gcc_cv_ld_no_dot_syms=no
4830 if test x"$ld_is_gold" = xyes; then
4831 gcc_cv_ld_no_dot_syms=yes
4832 elif test $in_tree_ld = yes ; then
4833 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4834 gcc_cv_ld_no_dot_syms=yes
4836 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4837 cat > conftest1.s <<EOF
4841 cat > conftest2.s <<EOF
4842 .section ".opd","aw"
4847 .quad .LEfoo,.TOC.@tocbase,0
4853 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4854 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4855 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4856 gcc_cv_ld_no_dot_syms=yes
4858 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4861 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4862 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4863 [Define if your PowerPC64 linker only needs function descriptor syms.])
4866 AC_CACHE_CHECK(linker large toc support,
4867 gcc_cv_ld_large_toc,
4868 [gcc_cv_ld_large_toc=no
4869 if test x"$ld_is_gold" = xyes; then
4870 gcc_cv_ld_large_toc=yes
4871 elif test $in_tree_ld = yes ; then
4872 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4873 gcc_cv_ld_large_toc=yes
4875 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4876 cat > conftest.s <<EOF
4877 .section ".tbss","awT",@nobits
4883 addis 9,13,ie0@got@tprel@ha
4884 ld 9,ie0@got@tprel@l(9)
4886 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4887 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4888 gcc_cv_ld_large_toc=yes
4890 rm -f conftest conftest.o conftest.s
4893 if test x"$gcc_cv_ld_large_toc" = xyes; then
4894 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4895 [Define if your PowerPC64 linker supports a large TOC.])
4902 AC_CACHE_CHECK(linker large toc support,
4903 gcc_cv_ld_large_toc,
4904 [gcc_cv_ld_large_toc=no
4905 if test x$gcc_cv_as != x ; then
4906 cat > conftest.s <<EOF
4916 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4917 gcc_cv_ld_large_toc=yes
4919 rm -f conftest conftest.o conftest.s
4922 if test x"$gcc_cv_ld_large_toc" = xyes; then
4923 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4924 [Define if your PowerPC64 linker supports a large TOC.])
4929 AC_CACHE_CHECK(linker --build-id support,
4931 [gcc_cv_ld_buildid=no
4932 if test $in_tree_ld = yes ; then
4933 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4934 "$gcc_cv_gld_minor_version" -ge 18 -o \
4935 "$gcc_cv_gld_major_version" -gt 2 \
4936 && test $in_tree_ld_is_elf = yes; then
4937 gcc_cv_ld_buildid=yes
4939 elif test x$gcc_cv_ld != x; then
4940 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4941 gcc_cv_ld_buildid=yes
4944 if test x"$gcc_cv_ld_buildid" = xyes; then
4945 AC_DEFINE(HAVE_LD_BUILDID, 1,
4946 [Define if your linker supports --build-id.])
4949 AC_ARG_ENABLE(linker-build-id,
4950 [AS_HELP_STRING([--enable-linker-build-id],
4951 [compiler will always pass --build-id to linker])],
4953 enable_linker_build_id=no)
4955 if test x"$enable_linker_build_id" = xyes; then
4956 if test x"$gcc_cv_ld_buildid" = xyes; then
4957 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4958 [Define if gcc should always pass --build-id to linker.])
4960 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4964 # In binutils 2.21, GNU ld gained support for new emulations fully
4965 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4966 AC_CACHE_CHECK(linker *_sol2 emulation support,
4967 gcc_cv_ld_sol2_emulation,
4968 [gcc_cv_ld_sol2_emulation=no
4969 if test $in_tree_ld = yes ; then
4970 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4971 "$gcc_cv_gld_minor_version" -ge 21 -o \
4972 "$gcc_cv_gld_major_version" -gt 2 \
4973 && test $in_tree_ld_is_elf = yes; then
4974 gcc_cv_ld_sol2_emulation=yes
4976 elif test x$gcc_cv_ld != x; then
4977 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4978 grep _sol2 > /dev/null; then
4979 gcc_cv_ld_sol2_emulation=yes
4982 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4983 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4984 [Define if your linker supports the *_sol2 emulations.])
4987 AC_CACHE_CHECK(linker --sysroot support,
4989 [gcc_cv_ld_sysroot=no
4990 if test $in_tree_ld = yes ; then
4991 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4992 gcc_cv_ld_sysroot=yes
4994 elif test x$gcc_cv_ld != x; then
4995 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4996 gcc_cv_ld_sysroot=yes
4999 if test x"$gcc_cv_ld_sysroot" = xyes; then
5000 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5001 [Define if your linker supports --sysroot.])
5004 # Test for stack protector support in target C library.
5005 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5006 gcc_cv_libc_provides_ssp,
5007 [gcc_cv_libc_provides_ssp=no
5009 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5010 # glibc 2.4 and later provides __stack_chk_fail and
5011 # either __stack_chk_guard, or TLS access to stack guard canary.
5012 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5013 [if test -f $target_header_dir/features.h \
5014 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5015 $target_header_dir/features.h > /dev/null; then
5016 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5017 $target_header_dir/features.h > /dev/null && \
5018 test -f $target_header_dir/bits/uClibc_config.h && \
5019 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5020 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5021 gcc_cv_libc_provides_ssp=yes
5023 # all versions of Bionic support stack protector
5024 elif test -f $target_header_dir/sys/cdefs.h \
5025 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5026 $target_header_dir/sys/cdefs.h > /dev/null; then
5027 gcc_cv_libc_provides_ssp=yes
5031 # Avoid complicated tests (see
5032 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5033 # simply assert that glibc does provide this, which is true for all
5034 # realistically usable GNU/Hurd configurations.
5035 gcc_cv_libc_provides_ssp=yes;;
5036 *-*-darwin* | *-*-freebsd*)
5037 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5038 [echo "no __stack_chk_fail on this target"])
5040 *) gcc_cv_libc_provides_ssp=no ;;
5043 if test x$gcc_cv_libc_provides_ssp = xyes; then
5044 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5045 [Define if your target C library provides stack protector support])
5048 # Test for <sys/sdt.h> on the target.
5049 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5050 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5052 if test -f $target_header_dir/sys/sdt.h; then
5054 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5055 [Define if your target C library provides sys/sdt.h])
5057 AC_MSG_RESULT($have_sys_sdt_h)
5059 # Check if TFmode long double should be used by default or not.
5060 # Some glibc targets used DFmode long double, but with glibc 2.4
5061 # and later they can use TFmode.
5063 powerpc*-*-linux* | \
5067 AC_ARG_WITH(long-double-128,
5068 [AS_HELP_STRING([--with-long-double-128],
5069 [use 128-bit long double by default])],
5070 gcc_cv_target_ldbl128="$with_long_double_128",
5071 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5072 [gcc_cv_target_ldbl128=no
5073 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5074 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5075 && gcc_cv_target_ldbl128=yes
5079 if test x$gcc_cv_target_ldbl128 = xyes; then
5080 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5081 [Define if TFmode long double should be the default])
5084 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5085 gcc_cv_target_dl_iterate_phdr=unknown
5087 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5088 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5089 # libdl there, both complicating its use and breaking compatibility
5090 # between Solaris 10 updates.
5091 *-*-solaris2.1[[1-9]]*)
5092 # <link.h> needs both a dl_iterate_phdr declaration and support for
5093 # compilation with largefile support.
5094 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5095 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5096 gcc_cv_target_dl_iterate_phdr=yes
5098 gcc_cv_target_dl_iterate_phdr=no
5102 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5103 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5104 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5105 [Define if your target C library provides the `dl_iterate_phdr' function.])
5107 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5109 # We no longer support different GC mechanisms. Emit an error if
5110 # the user configures with --with-gc.
5112 [AS_HELP_STRING([--with-gc={page,zone}],
5113 [this option is not supported anymore. It used to choose
5114 the garbage collection mechanism to use with the compiler])],
5115 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5118 # Libraries to use on the host. This will normally be set by the top
5119 # level Makefile. Here we simply capture the value for our Makefile.
5120 if test -z "${HOST_LIBS+set}"; then
5125 # Use the system's zlib library.
5127 zlibinc="-I\$(srcdir)/../zlib"
5128 AC_ARG_WITH(system-zlib,
5129 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5136 dnl Very limited version of automake's enable-maintainer-mode
5138 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5139 dnl maintainer-mode is disabled by default
5140 AC_ARG_ENABLE(maintainer-mode,
5141 [AS_HELP_STRING([--enable-maintainer-mode],
5142 [enable make rules and dependencies not useful
5143 (and sometimes confusing) to the casual installer])],
5144 maintainer_mode=$enableval,
5147 AC_MSG_RESULT($maintainer_mode)
5149 if test "$maintainer_mode" = "yes"; then
5156 dnl Whether to prevent multiple front-ends from linking at the same time
5158 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5159 AC_ARG_ENABLE(link-mutex,
5160 [AS_HELP_STRING([--enable-link-mutex],
5161 [avoid linking multiple front-ends at once to avoid thrashing
5162 on the build machine])],
5163 do_link_mutex=$enableval,
5165 AC_MSG_RESULT($do_link_mutex)
5167 if test "$do_link_mutex" = "yes"; then
5172 AC_SUBST(DO_LINK_MUTEX)
5178 # Make empty files to contain the specs and options for each language.
5179 # Then add #include lines to for a compiler that has specs and/or options.
5185 # These (without "all_") are set in each config-lang.in.
5186 # `language' must be a single word so is spelled singularly.
5189 all_outputs='Makefile'
5190 # List of language makefile fragments.
5192 # Additional files for gengtype
5193 all_gtfiles="$target_gtfiles"
5195 # These are the languages that are set in --enable-languages,
5196 # and are available in the GCC tree.
5197 all_selected_languages=
5199 # Add the language fragments.
5200 # Languages are added via two mechanisms. Some information must be
5201 # recorded in makefile variables, these are defined in config-lang.in.
5202 # We accumulate them and plug them into the main Makefile.
5203 # The other mechanism is a set of hooks for each of the main targets
5204 # like `clean', `install', etc.
5206 language_hooks="Make-hooks"
5208 for lang in ${srcdir}/*/config-lang.in
5211 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5213 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5214 if test "x$lang_alias" = x
5216 echo "$lang doesn't set \$language." 1>&2
5219 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5220 subdirs="$subdirs $subdir"
5222 # $gcc_subdir is where the gcc integration files are to be found
5223 # for a language, both for internal compiler purposes (compiler
5224 # sources implementing front-end to GCC tree converters), and for
5225 # build infrastructure purposes (Make-lang.in, etc.)
5227 # This will be <subdir> (relative to $srcdir) if a line like
5228 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5229 # is found in <langdir>/config-lang.in, and will remain <langdir>
5232 # Except for the language alias (fetched above), the regular
5233 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5234 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5235 # only this and the language alias.
5237 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5238 if [ "$gcc_subdir" = "" ]; then
5239 gcc_subdir="$subdir"
5242 case ",$enable_languages," in
5244 all_selected_languages="$all_selected_languages $lang_alias"
5245 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5246 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5258 . ${srcdir}/$gcc_subdir/config-lang.in
5259 if test "x$language" = x
5261 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5266 case ",$enable_languages," in
5269 for i in $subdir_requires; do
5270 test -f "${srcdir}/$i/config-lang.in" && continue
5278 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5279 if test -f $srcdir/$gcc_subdir/lang.opt; then
5280 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5281 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5283 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5284 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5286 all_languages="$all_languages $language"
5287 all_compilers="$all_compilers $compilers"
5288 all_outputs="$all_outputs $outputs"
5289 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5290 case ",$enable_languages," in
5292 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5294 AC_SUBST(enable_lto)
5301 for language in $all_selected_languages
5303 check_languages="$check_languages check-$language"
5306 # We link each language in with a set of hooks, reached indirectly via
5307 # lang.${target}. Only do so for selected languages.
5311 target_list="all.cross start.encap rest.encap tags \
5312 install-common install-man install-info install-pdf install-html dvi \
5313 pdf html uninstall info man srcextra srcman srcinfo \
5314 mostlyclean clean distclean maintainer-clean install-plugin"
5316 for t in $target_list
5319 for lang in $all_selected_languages
5323 echo "lang.$t: $x" >> Make-hooks
5327 # Option include files
5330 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5331 option_includes="option-includes.mk"
5332 AC_SUBST_FILE(option_includes)
5340 echo "dir ." > .gdbinit
5341 echo "dir ${srcdir}" >> .gdbinit
5342 if test x$gdb_needs_out_file_path = xyes
5344 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5346 if test "x$subdirs" != x; then
5349 echo "dir ${srcdir}/$s" >> .gdbinit
5352 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5353 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5355 # Put a breakpoint on __asan_report_error to help with debugging buffer
5358 *-fsanitize=address*)
5359 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5363 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5364 AC_SUBST(gcc_tooldir)
5367 # Find a directory in which to install a shared libgcc.
5369 AC_ARG_ENABLE(version-specific-runtime-libs,
5370 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5371 [specify that runtime libraries should be
5372 installed in a compiler-specific directory])])
5374 # Substitute configuration variables
5377 AC_SUBST(all_compilers)
5378 AC_SUBST(all_gtfiles)
5379 AC_SUBST(all_lang_makefrags)
5380 AC_SUBST(all_languages)
5381 AC_SUBST(all_selected_languages)
5382 AC_SUBST(build_exeext)
5383 AC_SUBST(build_install_headers_dir)
5384 AC_SUBST(build_xm_file_list)
5385 AC_SUBST(build_xm_include_list)
5386 AC_SUBST(build_xm_defines)
5387 AC_SUBST(build_file_translate)
5388 AC_SUBST(check_languages)
5389 AC_SUBST(cpp_install_dir)
5390 AC_SUBST(xmake_file)
5391 AC_SUBST(tmake_file)
5392 AC_SUBST(TM_ENDIAN_CONFIG)
5393 AC_SUBST(TM_MULTILIB_CONFIG)
5394 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5395 AC_SUBST(extra_gcc_objs)
5396 AC_SUBST(user_headers_inc_next_pre)
5397 AC_SUBST(user_headers_inc_next_post)
5398 AC_SUBST(extra_headers_list)
5399 AC_SUBST(extra_objs)
5400 AC_SUBST(extra_programs)
5401 AC_SUBST(float_h_file)
5402 AC_SUBST(gcc_config_arguments)
5403 AC_SUBST(gcc_gxx_include_dir)
5404 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5405 AC_SUBST(host_exeext)
5406 AC_SUBST(host_xm_file_list)
5407 AC_SUBST(host_xm_include_list)
5408 AC_SUBST(host_xm_defines)
5409 AC_SUBST(out_host_hook_obj)
5411 AC_SUBST(lang_opt_files)
5412 AC_SUBST(lang_specs_files)
5413 AC_SUBST(lang_tree_files)
5414 AC_SUBST(local_prefix)
5416 AC_SUBST(objc_boehm_gc)
5418 AC_SUBST(out_object_file)
5419 AC_SUBST(common_out_file)
5420 AC_SUBST(common_out_object_file)
5421 AC_SUBST(tm_file_list)
5422 AC_SUBST(tm_include_list)
5423 AC_SUBST(tm_defines)
5424 AC_SUBST(tm_p_file_list)
5425 AC_SUBST(tm_p_include_list)
5426 AC_SUBST(xm_file_list)
5427 AC_SUBST(xm_include_list)
5428 AC_SUBST(xm_defines)
5429 AC_SUBST(use_gcc_stdint)
5430 AC_SUBST(c_target_objs)
5431 AC_SUBST(cxx_target_objs)
5432 AC_SUBST(fortran_target_objs)
5433 AC_SUBST(target_cpu_default)
5435 AC_SUBST_FILE(language_hooks)
5438 if test x${build} = x${host} ; then
5439 if test x${host} = x${target} ; then
5440 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5442 echo "Links are now set up to build a cross-compiler" 1>&2
5443 echo " from ${host} to ${target}." 1>&2
5446 if test x${host} = x${target} ; then
5447 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5448 echo " for ${target}." 1>&2
5450 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5451 echo " from ${host} to ${target}." 1>&2
5455 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5456 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5458 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5459 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5461 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5462 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5463 if test "x${CLOOGLIBS}" != "x" ; then
5464 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5467 # Check for plugin support
5468 AC_ARG_ENABLE(plugin,
5469 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5470 enable_plugin=$enableval,
5471 enable_plugin=yes; default_plugin=yes)
5477 if test x$build = x$host; then
5478 export_sym_check="nm${exeext} -g"
5479 elif test x$host = x$target; then
5480 export_sym_check="$gcc_cv_nm -g"
5486 if test x$build = x$host; then
5487 export_sym_check="objdump${exeext} -T"
5488 elif test x$host = x$target; then
5489 export_sym_check="$gcc_cv_objdump -T"
5496 if test x"$enable_plugin" = x"yes"; then
5498 AC_MSG_CHECKING([for exported symbols])
5499 if test "x$export_sym_check" != x; then
5500 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5501 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5502 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5503 : # No need to use a flag
5504 AC_MSG_RESULT([yes])
5506 AC_MSG_RESULT([yes])
5507 AC_MSG_CHECKING([for -rdynamic])
5508 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5509 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5511 pluginlibs="-rdynamic"
5516 AC_MSG_RESULT([$plugin_rdynamic])
5519 AC_MSG_RESULT([unable to check])
5524 AC_SEARCH_LIBS([dlopen], [dl])
5525 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5526 pluginlibs="$pluginlibs -ldl"
5530 # Check that we can build shared objects with -fPIC -shared
5531 saved_LDFLAGS="$LDFLAGS"
5532 saved_CFLAGS="$CFLAGS"
5535 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5536 CFLAGS="$CFLAGS -fPIC"
5537 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5540 CFLAGS="$CFLAGS -fPIC"
5541 LDFLAGS="$LDFLAGS -fPIC -shared"
5544 AC_MSG_CHECKING([for -fPIC -shared])
5546 [extern int X;],[return X == 0;],
5547 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5548 [AC_MSG_RESULT([no]); have_pic_shared=no])
5549 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5553 LDFLAGS="$saved_LDFLAGS"
5554 CFLAGS="$saved_CFLAGS"
5556 # If plugin support had been requested but not available, fail.
5557 if test x"$enable_plugin" = x"no" ; then
5558 if test x"$default_plugin" != x"yes"; then
5560 Building GCC with plugin support requires a host that supports
5561 -fPIC, -shared, -ldl and -rdynamic.])
5566 AC_SUBST(pluginlibs)
5567 AC_SUBST(enable_plugin)
5568 if test x"$enable_plugin" = x"yes"; then
5569 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5573 # Enable --enable-host-shared
5574 AC_ARG_ENABLE(host-shared,
5575 [AS_HELP_STRING([--enable-host-shared],
5576 [build host code as shared libraries])],
5577 [PICFLAG=-fPIC], [PICFLAG=])
5578 AC_SUBST(enable_host_shared)
5582 AC_ARG_ENABLE(libquadmath-support,
5583 [AS_HELP_STRING([--disable-libquadmath-support],
5584 [disable libquadmath support for Fortran])],
5585 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5586 ENABLE_LIBQUADMATH_SUPPORT=yes)
5587 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5588 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5589 [Define to 1 to enable libquadmath support])
5593 # Specify what hash style to use by default.
5594 AC_ARG_WITH([linker-hash-style],
5595 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5596 [specify the linker hash style])],
5597 [case x"$withval" in
5599 LINKER_HASH_STYLE=sysv
5602 LINKER_HASH_STYLE=gnu
5605 LINKER_HASH_STYLE=both
5608 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5611 [LINKER_HASH_STYLE=''])
5612 if test x"${LINKER_HASH_STYLE}" != x; then
5613 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5614 [The linker hash style])
5617 # Configure the subdirectories
5618 # AC_CONFIG_SUBDIRS($subdirs)
5620 # Create the Makefile
5621 # and configure language subdirectories
5622 AC_CONFIG_FILES($all_outputs)
5624 AC_CONFIG_COMMANDS([default],
5626 case ${CONFIG_HEADERS} in
5627 *auto-host.h:config.in*)
5630 # Make sure all the subdirs exist.
5631 for d in $subdirs doc build common c-family
5633 test -d $d || mkdir $d
5636 [subdirs='$subdirs'])