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 "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
294 # Determine PICFLAG for target gnatlib.
295 GCC_PICFLAG_FOR_TARGET
296 AC_SUBST(PICFLAG_FOR_TARGET)
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
308 # sizeof(char) is 1 by definition.
309 AC_CHECK_SIZEOF(void *)
310 AC_CHECK_SIZEOF(short)
312 AC_CHECK_SIZEOF(long)
313 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
315 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
316 AC_MSG_ERROR([uint64_t or int64_t not found])
319 # ---------------------
320 # Warnings and checking
321 # ---------------------
323 # Check $CC warning features (if it's GCC).
324 # We want to use -pedantic, but we don't want warnings about
328 # * C++11 narrowing conversions in { }
329 # So, we only use -pedantic if we can disable those warnings.
331 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
332 AC_ARG_ENABLE(build-format-warnings,
333 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
334 [],[enable_build_format_warnings=yes])
335 AS_IF([test $enable_build_format_warnings = no],
336 [wf_opt=-Wno-format],[wf_opt=])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
346 ACX_PROG_CC_WARNING_OPTS(
347 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
348 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
349 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
350 [-Wno-overlength-strings])), [strict_warn])
351 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
353 # The above macros do nothing if the compiler is not GCC. However, the
354 # Makefile has more goo to add other flags, so these variables are used
355 # to enable warnings only for GCC.
358 if test "x$GCC" = "xyes"; then
359 warn_cflags='$(GCC_WARN_CFLAGS)'
360 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
362 AC_SUBST(warn_cflags)
363 AC_SUBST(warn_cxxflags)
365 # Disable exceptions and RTTI if building with g++
366 ACX_PROG_CC_WARNING_OPTS(
367 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
370 # Enable expensive internal checks
372 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
376 AC_ARG_ENABLE(checking,
377 [AS_HELP_STRING([[--enable-checking[=LIST]]],
378 [enable expensive run-time checks. With LIST,
379 enable only specific categories of checks.
380 Categories are: yes,no,all,none,release.
381 Flags are: assert,df,fold,gc,gcac,gimple,misc,
382 rtlflag,rtl,runtime,tree,valgrind,types])],
383 [ac_checking_flags="${enableval}"],[
384 # Determine the default checks.
385 if test x$is_release = x ; then
386 ac_checking_flags=yes
388 ac_checking_flags=release
390 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
391 for check in release $ac_checking_flags
394 # these set all the flags to specific states
395 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
396 ac_fold_checking= ; ac_gc_checking=1 ;
397 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
398 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
399 ac_tree_checking=1 ; ac_valgrind_checking= ;
400 ac_types_checking=1 ;;
401 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
402 ac_fold_checking= ; ac_gc_checking= ;
403 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
404 ac_rtlflag_checking= ; ac_runtime_checking= ;
405 ac_tree_checking= ; ac_valgrind_checking= ;
406 ac_types_checking= ;;
407 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
408 ac_fold_checking=1 ; ac_gc_checking=1 ;
409 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
410 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
411 ac_tree_checking=1 ; ac_valgrind_checking= ;
412 ac_types_checking=1 ;;
413 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
414 ac_fold_checking= ; ac_gc_checking= ;
415 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
416 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
417 ac_tree_checking= ; ac_valgrind_checking= ;
418 ac_types_checking= ;;
419 # these enable particular checks
420 assert) ac_assert_checking=1 ;;
421 df) ac_df_checking=1 ;;
422 fold) ac_fold_checking=1 ;;
423 gc) ac_gc_checking=1 ;;
424 gcac) ac_gc_always_collect=1 ;;
425 gimple) ac_gimple_checking=1 ;;
426 misc) ac_checking=1 ;;
427 rtl) ac_rtl_checking=1 ;;
428 rtlflag) ac_rtlflag_checking=1 ;;
429 runtime) ac_runtime_checking=1 ;;
430 tree) ac_tree_checking=1 ;;
431 types) ac_types_checking=1 ;;
432 valgrind) ac_valgrind_checking=1 ;;
433 *) AC_MSG_ERROR(unknown check category $check) ;;
439 if test x$ac_checking != x ; then
440 AC_DEFINE(ENABLE_CHECKING, 1,
441 [Define if you want more run-time sanity checks. This one gets a grab
442 bag of miscellaneous but relatively cheap checks.])
443 nocommon_flag=-fno-common
445 AC_SUBST(nocommon_flag)
446 if test x$ac_df_checking != x ; then
447 AC_DEFINE(ENABLE_DF_CHECKING, 1,
448 [Define if you want more run-time sanity checks for dataflow.])
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_gimple_checking != x ; then
455 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
456 [Define if you want operations on GIMPLE (the basic data structure of
457 the high-level optimizers) to be checked for dynamic type safety at
458 runtime. This is moderately expensive.])
460 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
461 if test x$ac_runtime_checking != x ; then
462 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
463 [Define if you want runtime assertions enabled. This is a cheap check.])
465 if test x$ac_tree_checking != x ; then
466 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
467 [Define if you want all operations on trees (the basic data
468 structure of the front ends) to be checked for dynamic type safety
469 at runtime. This is moderately expensive. The tree browser debugging
470 routines will also be enabled by this option.
472 TREEBROWSER=tree-browser.o
475 if test x$ac_types_checking != x ; then
476 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
477 [Define if you want all gimple types to be verified after gimplifiation.
481 AC_SUBST(TREEBROWSER)
482 AC_SUBST(TREECHECKING)
483 if test x$ac_rtl_checking != x ; then
484 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
485 [Define if you want all operations on RTL (the basic data structure
486 of the optimizer and back end) to be checked for dynamic type safety
487 at runtime. This is quite expensive.])
489 if test x$ac_rtlflag_checking != x ; then
490 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
491 [Define if you want RTL flag accesses to be checked against the RTL
492 codes that are supported for each access macro. This is relatively
495 if test x$ac_gc_checking != x ; then
496 AC_DEFINE(ENABLE_GC_CHECKING, 1,
497 [Define if you want the garbage collector to do object poisoning and
498 other memory allocation checks. This is quite expensive.])
500 if test x$ac_gc_always_collect != x ; then
501 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
502 [Define if you want the garbage collector to operate in maximally
503 paranoid mode, validating the entire heap and collecting garbage at
504 every opportunity. This is extremely expensive.])
506 if test x$ac_fold_checking != x ; then
507 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
508 [Define if you want fold checked that it never destructs its argument.
509 This is quite expensive.])
511 valgrind_path_defines=
514 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
515 dnl # an if statement. This was the source of very frustrating bugs
516 dnl # in converting to autoconf 2.5x!
517 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
519 # It is certainly possible that there's valgrind but no valgrind.h.
520 # GCC relies on making annotations so we must have both.
521 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
522 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
523 [[#include <valgrind/memcheck.h>
524 #ifndef VALGRIND_DISCARD
525 #error VALGRIND_DISCARD not defined
527 [gcc_cv_header_valgrind_memcheck_h=yes],
528 [gcc_cv_header_valgrind_memcheck_h=no])
529 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
530 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
531 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
532 [[#include <memcheck.h>
533 #ifndef VALGRIND_DISCARD
534 #error VALGRIND_DISCARD not defined
536 [gcc_cv_header_memcheck_h=yes],
537 [gcc_cv_header_memcheck_h=no])
538 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
539 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
540 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
541 [Define if valgrind's valgrind/memcheck.h header is installed.])
543 if test $gcc_cv_header_memcheck_h = yes; then
544 AC_DEFINE(HAVE_MEMCHECK_H, 1,
545 [Define if valgrind's memcheck.h header is installed.])
548 if test x$ac_valgrind_checking != x ; then
549 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
550 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
551 if test "x$valgrind_path" = "x" \
552 || (test $have_valgrind_h = no \
553 && test $gcc_cv_header_memcheck_h = no \
554 && test $gcc_cv_header_valgrind_memcheck_h = no); then
555 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
557 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
558 valgrind_command="$valgrind_path -q"
559 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
560 [Define if you want to run subprograms and generated programs
561 through valgrind (a memory checker). This is extremely expensive.])
563 AC_SUBST(valgrind_path_defines)
564 AC_SUBST(valgrind_command)
566 # Enable code coverage collection
567 AC_ARG_ENABLE(coverage,
568 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
569 [enable compiler's code coverage collection.
570 Use to measure compiler performance and locate
571 unused parts of the compiler. With LEVEL, specify
572 optimization. Values are opt, noopt,
574 [case "${enableval}" in
576 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
579 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
582 # a.k.a. --disable-coverage
586 AC_MSG_ERROR(unknown coverage setting $enableval)
590 AC_SUBST(coverage_flags)
592 AC_ARG_ENABLE(gather-detailed-mem-stats,
593 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
594 [enable detailed memory allocation stats gathering])], [],
595 [enable_gather_detailed_mem_stats=no])
596 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
597 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
598 [Define to enable detailed memory allocation stats gathering.])
600 AC_ARG_ENABLE(valgrind-annotations,
601 [AS_HELP_STRING([--enable-valgrind-annotations],
602 [enable valgrind runtime interaction])], [],
603 [enable_valgrind_annotations=no])
604 if test x$enable_valgrind_annotations != xno \
605 || test x$ac_valgrind_checking != x; then
606 if (test $have_valgrind_h = no \
607 && test $gcc_cv_header_memcheck_h = no \
608 && test $gcc_cv_header_valgrind_memcheck_h = no); then
609 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
611 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
612 [Define to get calls to the valgrind runtime enabled.])
615 # -------------------------------
616 # Miscenalleous configure options
617 # -------------------------------
621 [AS_HELP_STRING([--with-stabs],
622 [arrange to use stabs instead of host debug format])],
626 # Determine whether or not multilibs are enabled.
627 AC_ARG_ENABLE(multilib,
628 [AS_HELP_STRING([--enable-multilib],
629 [enable library support for multiple ABIs])],
630 [], [enable_multilib=yes])
631 AC_SUBST(enable_multilib)
633 # Determine whether or not multiarch is enabled.
634 AC_ARG_ENABLE(multiarch,
635 [AS_HELP_STRING([--enable-multiarch],
636 [enable support for multiarch paths])],
637 [case "${enableval}" in
638 yes|no|auto) enable_multiarch=$enableval;;
639 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
640 esac], [enable_multiarch=auto])
641 if test x${enable_multiarch} = xauto; then
642 if test x${with_native_system_header_dir} != x; then
643 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
646 if test x$host != x$target && test "x$with_sysroot" = x; then
647 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
651 AC_MSG_CHECKING(for multiarch configuration)
652 AC_SUBST(enable_multiarch)
653 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
655 # needed for setting the multiarch name for soft-float/hard-float ABIs
659 # Enable __cxa_atexit for C++.
660 AC_ARG_ENABLE(__cxa_atexit,
661 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
664 # Enable C extension for decimal float if target supports it.
665 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
667 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
668 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
669 [Define to 1 to enable decimal float extension to C.])
671 # Use default_decimal_float for dependency.
672 enable_decimal_float=$default_decimal_float
674 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
675 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
676 [Define to 1 to specify that we are using the BID decimal floating
677 point format instead of DPD])
679 # Enable C extension for fixed-point arithmetic.
680 AC_ARG_ENABLE(fixed-point,
681 [AS_HELP_STRING([--enable-fixed-point],
682 [enable fixed-point arithmetic extension to C])],
687 enable_fixed_point=yes
691 enable_fixed_point=yes
694 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
695 enable_fixed_point=no
699 AC_SUBST(enable_fixed_point)
701 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
702 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
703 [Define to 1 to enable fixed-point arithmetic extension to C.])
706 # Pass with no value to take the default
707 # Pass with a value to specify a thread package
708 AC_ARG_ENABLE(threads,
709 [AS_HELP_STRING([[--enable-threads[=LIB]]],
710 [enable thread usage for target GCC,
711 using LIB thread package])],,
715 [AS_HELP_STRING([--enable-tls],
716 [enable or disable generation of tls code
717 overriding the assembler check for tls support])],
721 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
722 Valid choices are 'yes' and 'no'.]) ;;
726 AC_ARG_ENABLE(objc-gc,
727 [AS_HELP_STRING([--enable-objc-gc],
728 [enable the use of Boehm's garbage collector with
729 the GNU Objective-C runtime])],
730 if test x$enable_objc_gc = xno; then
737 AC_ARG_WITH([upc-pts],
739 [--with-upc-pts={struct,packed}],
740 [choose the representation of a UPC pointer-to-shared]),
743 packed|struct) upc_pts_rep="$withval" ;;
744 *) AC_MSG_ERROR([$withval is an invalid option to --with-upc-pts])
748 [upc_pts_rep="packed"])
751 # Perl is required for checking pts representation
752 AC_CHECK_PROG(PERL, perl, perl)
754 AC_ARG_WITH([upc-pts-vaddr-order],
756 [--with-upc-pts-vaddr-order={last,first}],
757 [choose position of the address field in UPC pointer-to-shared representation]),
759 upc_vaddr_order="$withval"
760 case "$upc_vaddr_order" in
763 [$withval is an invalid option to --with-upc-pts-vaddr-order]) ;;
766 [upc_vaddr_order="first"])
768 AC_ARG_WITH([upc-pts-packed-bits],
770 [--with-upc-pts-packed-bits=phase,thread,vaddr],
771 [choose bit distribution in packed UPC pointer-to-shared representation]),
773 if test x"$upc_pts_rep" = x"packed"; then
774 UPC_PTS_PHASE_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
775 print $1 if ($1+$2+$3 == 64) && $1>=1;'`
776 UPC_PTS_THREAD_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
777 print $2 if ($1+$2+$3 == 64) && $2>=1;'`
778 UPC_PTS_VADDR_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
779 print $3 if ($1+$2+$3 == 64) && $3>=20;'`
780 if test -z "$UPC_PTS_PHASE_SIZE" \
781 || test -z "$UPC_PTS_THREAD_SIZE" \
782 || test -z "$UPC_PTS_VADDR_SIZE" ; then
783 AC_MSG_ERROR([--with-upc-pts-packed-bits=phase,thread,vaddr requires
784 phase+thread+vaddr=64 and phase >= 1 and thread >= 1 and vaddr >= 20])
787 AC_MSG_ERROR([--with-upc-pts-packed-bits is only supported for
788 the packed UPC pointer-to-shared representation])
792 # GNU UPC packed pointer representation defaults.
795 UPC_PTS_PHASE_SIZE=20
796 UPC_PTS_THREAD_SIZE=12
797 UPC_PTS_VADDR_SIZE=32
800 UPC_PTS_PHASE_SIZE=20
801 UPC_PTS_THREAD_SIZE=10
802 UPC_PTS_VADDR_SIZE=34
806 AC_ARG_ENABLE(upc-link-script,
808 [--enable-upc-link-script],
809 [enable UPC's use of a custom linker script;
810 this will define the UPC shared section as a no load section on
811 targets where this feature is supported (requires GNU LD)]),
816 AC_MSG_ERROR([--enable-upc-link-script accepts only yes or no.])
819 [enable_upc_link_script=no])
822 # Process UPC-specific configuration options.
824 AC_MSG_CHECKING([for UPC pointer-to-shared representation])
825 AC_MSG_RESULT([$upc_pts_rep])
826 case "$upc_pts_rep" in
828 AC_DEFINE(HAVE_UPC_PTS_PACKED_REP,[1],
829 [Define to 1 if UPC pointer-to-shared representation
830 is a packed 64 bit word.])
833 AC_DEFINE(HAVE_UPC_PTS_STRUCT_REP,[1],
834 [Define to 1 if UPC pointer-to-shared representation
838 AC_MSG_CHECKING([for UPC pointer-to-shared address field position])
839 AC_MSG_RESULT([$upc_vaddr_order])
840 if test x"$upc_vaddr_order" = x"first"; then
841 AC_DEFINE(HAVE_UPC_PTS_VADDR_FIRST,[1],
842 [Define to 1 if the 'vaddr' field is the first field
843 in the UPC pointer-to-shared representation.])
845 if test x"$upc_pts_rep" = x"packed"; then
846 AC_DEFINE_UNQUOTED(UPC_PTS_PHASE_SIZE,$UPC_PTS_PHASE_SIZE,
847 [For packed UPC pointers-to-shared,
848 the size of the phase field (in bits).])
849 AC_DEFINE_UNQUOTED(UPC_PTS_THREAD_SIZE,$UPC_PTS_THREAD_SIZE,
850 [For packed UPC pointers-to-shared,
851 the size of the thread field (in bits).])
852 AC_DEFINE_UNQUOTED(UPC_PTS_VADDR_SIZE,$UPC_PTS_VADDR_SIZE,
853 [For packed UPC pointers-to-shared,
854 the size of the address field (in bits).])
855 AC_MSG_CHECKING([for packed UPC pointer-to-shared layout])
857 ["phase=${UPC_PTS_PHASE_SIZE},thread=${UPC_PTS_THREAD_SIZE},
858 vaddr=${UPC_PTS_VADDR_SIZE}"])
860 AC_MSG_CHECKING([for UPC link script support])
861 AC_MSG_RESULT($enable_upc_link_script)
862 if test "$enable_upc_link_script" = yes; then
863 AC_DEFINE(HAVE_UPC_LINK_SCRIPT, 1, [Define to 1 if UPC link script is supported.])
867 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
868 dwarf2="$with_dwarf2",
871 AC_ARG_ENABLE(shared,
872 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
874 case $enable_shared in
878 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
879 for pkg in $enableval; do
880 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
887 ], [enable_shared=yes])
888 AC_SUBST(enable_shared)
890 AC_ARG_WITH([native-system-header-dir],
891 [ --with-native-system-header-dir=dir
892 use dir as the directory to look for standard
893 system header files in. Defaults to /usr/include.],
895 case ${with_native_system_header_dir} in
896 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
897 /* | [[A-Za-z]]:[[\\/]]*) ;;
898 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
900 configured_native_system_header_dir="${withval}"
901 ], [configured_native_system_header_dir=])
903 AC_ARG_WITH(build-sysroot,
904 [AS_HELP_STRING([--with-build-sysroot=sysroot],
905 [use sysroot as the system root during the build])],
906 [if test x"$withval" != x ; then
907 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
909 [SYSROOT_CFLAGS_FOR_TARGET=])
910 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
912 if test "x$prefix" = xNONE; then
913 test_prefix=/usr/local
917 if test "x$exec_prefix" = xNONE; then
918 test_exec_prefix=$test_prefix
920 test_exec_prefix=$exec_prefix
924 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
925 [search for usr/lib, usr/include, et al, within DIR])],
927 case ${with_sysroot} in
928 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
929 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
932 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
933 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
935 case ${TARGET_SYSTEM_ROOT} in
936 "${test_prefix}"|"${test_prefix}/"*|\
937 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
938 '${prefix}'|'${prefix}/'*|\
939 '${exec_prefix}'|'${exec_prefix}/'*)
940 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
941 TARGET_SYSTEM_ROOT_DEFINE="$t"
946 TARGET_SYSTEM_ROOT_DEFINE=
947 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
949 AC_SUBST(TARGET_SYSTEM_ROOT)
950 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
951 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
954 [AS_HELP_STRING([--with-specs=SPECS],
955 [add SPECS to driver command-line processing])],
956 [CONFIGURE_SPECS=$withval],
959 AC_SUBST(CONFIGURE_SPECS)
961 ACX_PKGVERSION([GCC])
962 ACX_BUGURL([http://gccupc.org/bugs])
964 # Sanity check enable_languages in case someone does not run the toplevel
965 # configure # script.
966 AC_ARG_ENABLE(languages,
967 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
968 [case ,${enable_languages}, in
970 # go safe -- we cannot be much sure without the toplevel
972 # analysis of which target libs are present and usable
976 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
981 enable_languages=c,${enable_languages}
984 [enable_languages=c])
986 AC_ARG_WITH(multilib-list,
987 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
989 with_multilib_list=default)
991 # -------------------------
992 # Checks for other programs
993 # -------------------------
997 # Find some useful tools
999 # We need awk to create options.c and options.h.
1000 # Bail out if it's missing.
1002 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1009 AC_SUBST(ranlib_flags)
1013 # See if cmp has --ignore-initial.
1014 gcc_AC_PROG_CMP_IGNORE_INITIAL
1016 # See if we have the mktemp command.
1017 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1019 # See if makeinfo has been installed and is modern enough
1020 # that we can use it.
1021 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1022 [GNU texinfo.* \([0-9][0-9.]*\)],
1023 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1024 if test $gcc_cv_prog_makeinfo_modern = no; then
1026 *** Makeinfo is missing or too old.
1027 *** Info documentation will not be built.])
1032 AC_SUBST(BUILD_INFO)
1034 # Is pod2man recent enough to regenerate manpages?
1035 AC_MSG_CHECKING([for recent Pod::Man])
1036 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1038 GENERATED_MANPAGES=generated-manpages
1043 AC_SUBST(GENERATED_MANPAGES)
1045 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1048 dnl Don't use AC_PROG_LEX; we insist on flex.
1049 dnl LEXLIB is not useful in gcc.
1050 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1053 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1055 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1056 # check for build == host before using them.
1059 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1060 && test -d ../binutils ; then
1061 NM='${objdir}/../binutils/nm-new'
1063 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1067 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1068 && test -d ../binutils ; then
1069 AR='${objdir}/../binutils/ar'
1071 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1075 # --------------------
1076 # Checks for C headers
1077 # --------------------
1079 # Need to reject headers which give warnings, so that the -Werror bootstrap
1080 # works later. *sigh* This needs to come before all header checks.
1087 AC_HEADER_TIOCGWINSZ
1088 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1089 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
1090 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1091 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1093 # Check for thread headers.
1094 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1095 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1097 # These tests can't be done till we know if we have limits.h.
1101 # ----------------------
1102 # Checks for C++ headers
1103 # ----------------------
1105 dnl Autoconf will give an error in the configure script if there is no
1106 dnl C++ preprocessor. Hack to prevent that.
1107 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1109 m4_popdef([AC_MSG_ERROR])[]dnl
1113 AC_CHECK_HEADERS(unordered_map)
1114 AC_CHECK_HEADERS(tr1/unordered_map)
1115 AC_CHECK_HEADERS(ext/hash_map)
1120 # Dependency checking.
1125 AC_CONFIG_COMMANDS([gccdepdir],[
1126 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1127 for lang in $subdirs c-family common
1129 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1130 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1132 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1140 # These libraries may be used by collect2.
1141 # We may need a special search path to get them linked.
1142 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1144 for libs in '' -lld -lmld \
1145 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1146 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1149 AC_TRY_LINK_FUNC(ldopen,
1150 [gcc_cv_collect2_libs="$libs"; break])
1153 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1154 case $gcc_cv_collect2_libs in
1156 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1158 AC_SUBST(COLLECT2_LIBS)
1160 # When building Ada code on Alpha, we need exc_resume which is usually in
1161 # -lexc. So test for it.
1164 AC_SEARCH_LIBS(exc_resume, exc)
1167 AC_SUBST(GNAT_LIBEXC)
1169 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1172 AC_SEARCH_LIBS(kstat_open, kstat)
1173 EXTRA_GCC_LIBS="$LIBS"
1175 AC_SUBST(EXTRA_GCC_LIBS)
1177 # Some systems put ldexp and frexp in libm instead of libc; assume
1178 # they're both in the same place. jcf-dump needs them.
1181 AC_SEARCH_LIBS(ldexp, m)
1186 # Use <inttypes.h> only if it exists,
1187 # doesn't clash with <sys/types.h>, and declares intmax_t.
1188 AC_MSG_CHECKING(for inttypes.h)
1189 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1190 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1191 [[#include <sys/types.h>
1192 #include <inttypes.h>]],
1193 [[intmax_t i = -1;]])],
1194 [gcc_cv_header_inttypes_h=yes],
1195 [gcc_cv_header_inttypes_h=no])])
1196 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1197 if test $gcc_cv_header_inttypes_h = yes; then
1198 AC_DEFINE(HAVE_INTTYPES_H, 1,
1199 [Define if you have a working <inttypes.h> header file.])
1202 dnl Disabled until we have a complete test for buggy enum bitfields.
1203 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1205 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1206 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1207 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1208 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1209 putchar_unlocked putc_unlocked)
1210 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1211 sysconf strsignal getrusage nl_langinfo \
1212 gettimeofday mbstowcs wcswidth mmap setlocale \
1213 gcc_UNLOCKED_FUNCS madvise)
1215 if test x$ac_cv_func_mbstowcs = xyes; then
1216 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1217 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1223 [gcc_cv_func_mbstowcs_works=yes],
1224 [gcc_cv_func_mbstowcs_works=no],
1225 [gcc_cv_func_mbstowcs_works=yes])])
1226 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1227 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1228 [Define this macro if mbstowcs does not crash when its
1229 first argument is NULL.])
1233 AC_CHECK_TYPE(ssize_t, int)
1234 AC_CHECK_TYPE(caddr_t, char *)
1236 GCC_AC_FUNC_MMAP_BLACKLIST
1240 # Under VMS, vfork works very differently than on Unix. The standard test
1241 # won't work, and it isn't easily adaptable. It makes more sense to
1243 ac_cv_func_vfork_works=yes
1248 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1249 # iconv() prototype.
1254 # Until we have in-tree GNU iconv:
1256 AC_SUBST(LIBICONV_DEP)
1262 # We will need to find libiberty.h and ansidecl.h
1263 saved_CFLAGS="$CFLAGS"
1264 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1265 saved_CXXFLAGS="$CXXFLAGS"
1266 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1267 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1268 strsignal strstr stpcpy strverscmp \
1269 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1270 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1271 #include "ansidecl.h"
1272 #include "system.h"])
1274 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1275 #include "ansidecl.h"
1277 #ifdef HAVE_SYS_RESOURCE_H
1278 #include <sys/resource.h>
1282 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1283 #include "ansidecl.h"
1285 #ifdef HAVE_SYS_RESOURCE_H
1286 #include <sys/resource.h>
1288 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1289 [Define to `long' if <sys/resource.h> doesn't define.])])
1291 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1292 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1293 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1294 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1295 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1296 #include "ansidecl.h"
1305 gcc_AC_CHECK_DECLS(times, , ,[
1306 #include "ansidecl.h"
1308 #ifdef HAVE_SYS_TIMES_H
1309 #include <sys/times.h>
1313 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1314 #include "ansidecl.h"
1319 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1322 gcc_AC_CHECK_DECLS(madvise, , ,[
1323 #include "ansidecl.h"
1328 # More time-related stuff.
1329 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1330 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1331 #include "ansidecl.h"
1333 #ifdef HAVE_SYS_TIMES_H
1334 #include <sys/times.h>
1336 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1337 if test $ac_cv_struct_tms = yes; then
1338 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1339 [Define if <sys/times.h> defines struct tms.])
1342 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1343 # revisit after autoconf 2.50.
1344 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1345 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1346 #include "ansidecl.h"
1348 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1349 if test $gcc_cv_type_clock_t = yes; then
1350 AC_DEFINE(HAVE_CLOCK_T, 1,
1351 [Define if <time.h> defines clock_t.])
1354 # Check if F_SETLKW is supported by fcntl.
1355 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1356 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1357 #include <fcntl.h>]], [[
1363 return fcntl (1, F_SETLKW, &fl);]])],
1364 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1365 if test $ac_cv_f_setlkw = yes; then
1366 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1367 [Define if F_SETLKW supported by fcntl.])
1370 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1371 CFLAGS="$saved_CFLAGS"
1372 CXXFLAGS="$saved_CXXFLAGS"
1374 # mkdir takes a single argument on some systems.
1375 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1383 # With Setjmp/Longjmp based exception handling.
1384 AC_ARG_ENABLE(sjlj-exceptions,
1385 [AS_HELP_STRING([--enable-sjlj-exceptions],
1386 [arrange to use setjmp/longjmp exception handling])],
1389 if test $enableval != yes; then
1390 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1395 force_sjlj_exceptions=yes],
1398 force_sjlj_exceptions=yes
1402 force_sjlj_exceptions=yes
1406 force_sjlj_exceptions=no
1409 if test $force_sjlj_exceptions = yes; then
1410 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1411 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1412 [Define 0/1 to force the choice for exception handling model.])
1415 # --------------------------------------------------------
1416 # Build, host, and target specific configuration fragments
1417 # --------------------------------------------------------
1419 # Collect build-machine-specific information.
1420 . ${srcdir}/config.build
1422 # Collect host-machine-specific information.
1423 . ${srcdir}/config.host
1427 # Collect target-machine-specific information.
1428 . ${srcdir}/config.gcc
1430 extra_objs="${host_extra_objs} ${extra_objs}"
1431 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1433 # Default the target-machine variables that were not explicitly set.
1434 if test x"$tm_file" = x
1435 then tm_file=$cpu_type/$cpu_type.h; fi
1437 if test x"$extra_headers" = x
1438 then extra_headers=; fi
1440 if test x$md_file = x
1441 then md_file=$cpu_type/$cpu_type.md; fi
1443 if test x$out_file = x
1444 then out_file=$cpu_type/$cpu_type.c; fi
1446 if test x"$tmake_file" = x
1447 then tmake_file=$cpu_type/t-$cpu_type
1450 # Support --enable-initfini-array.
1451 if test x$enable_initfini_array != xno; then
1452 tm_file="${tm_file} initfini-array.h"
1455 if test x"$dwarf2" = xyes
1456 then tm_file="$tm_file tm-dwarf2.h"
1459 # Say what files are being used for the output code and MD file.
1460 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1461 echo "Using \`$srcdir/config/$md_file' as machine description file."
1463 # If any of the xm_file variables contain nonexistent files, warn
1464 # about them and drop them.
1467 for x in $build_xm_file; do
1468 if test -f $srcdir/config/$x
1470 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1476 for x in $host_xm_file; do
1477 if test -f $srcdir/config/$x
1479 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1485 for x in $xm_file; do
1486 if test -f $srcdir/config/$x
1488 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1494 for f in $tm_file; do
1497 if test $count = ax; then
1498 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1500 echo "Using the following target machine macro files:"
1501 for f in $tm_file; do
1502 echo " $srcdir/config/$f"
1506 if test x$use_long_long_for_widest_fast_int = xyes; then
1507 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1508 [Define to 1 if the 'long long' type is wider than 'long' but still
1509 efficiently supported by the host hardware.])
1512 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1513 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1515 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1516 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1519 for f in $host_xm_file; do
1522 if test $count = a; then
1524 elif test $count = ax; then
1525 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1527 echo "Using the following host machine macro files:"
1528 for f in $host_xm_file; do
1529 echo " $srcdir/config/$f"
1532 echo "Using ${out_host_hook_obj} for host machine hooks."
1534 if test "$host_xm_file" != "$build_xm_file"; then
1536 for f in $build_xm_file; do
1539 if test $count = a; then
1541 elif test $count = ax; then
1542 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1544 echo "Using the following build machine macro files:"
1545 for f in $build_xm_file; do
1546 echo " $srcdir/config/$f"
1551 if test -n "$configured_native_system_header_dir"; then
1552 native_system_header_dir=$configured_native_system_header_dir
1554 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1555 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1559 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1560 gcc_cv_mcontext_underscores,
1562 #include <sys/cdefs.h>
1563 #include <sys/signal.h>
1564 #include <ucontext.h>
1565 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1567 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1568 if test $gcc_cv_mcontext_underscores = yes; then
1569 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1570 [mcontext_t fields start with __])
1579 # Check if a valid thread package
1580 case ${enable_threads} in
1583 target_thread_file='single'
1587 target_thread_file='single'
1589 aix | dce | lynx | mipssde | posix | rtems | \
1590 single | tpf | vxworks | win32)
1591 target_thread_file=${enable_threads}
1594 echo "${enable_threads} is an unknown thread package" 1>&2
1599 if test x${thread_file} = x; then
1600 # No thread file set by target-specific clauses in config.gcc,
1601 # so use file chosen by default logic above
1602 thread_file=${target_thread_file}
1610 if test x$enable___cxa_atexit = xyes || \
1611 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1612 if test x$host = x$target; then
1614 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1615 # keyed to flag_use_cxa_atexit
1623 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1624 [echo "__cxa_atexit can't be enabled on this target"])
1628 # We can't check for __cxa_atexit when building a cross, so assume
1632 if test x$use_cxa_atexit = xyes; then
1633 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1634 [Define if you want to use __cxa_atexit, rather than atexit, to
1635 register C++ destructors for local statics and global objects.
1636 This is essential for fully standards-compliant handling of
1637 destructors, but requires __cxa_atexit in libc.])
1641 # Look for a file containing extra machine modes.
1642 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1643 extra_modes_file='$(srcdir)'/config/${extra_modes}
1644 AC_SUBST(extra_modes_file)
1645 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1646 [Define to the name of a file containing a list of extra machine modes
1647 for this architecture.])
1650 # Convert extra_options into a form suitable for Makefile use.
1653 for f in $extra_options; do
1654 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1655 all_opt_files="$all_opt_files $srcdir/config/$f"
1657 AC_SUBST(extra_opt_files)
1659 # auto-host.h is the file containing items generated by autoconf and is
1660 # the first file included by config.h.
1661 # If host=build, it is correct to have bconfig include auto-host.h
1662 # as well. If host!=build, we are in error and need to do more
1663 # work to find out the build config parameters.
1664 if test x$host = x$build
1666 build_auto=auto-host.h
1668 # We create a subdir, then run autoconf in the subdir.
1669 # To prevent recursion we set host and build for the new
1670 # invocation of configure to the build for this invocation
1677 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1678 *) realsrcdir=../${srcdir};;
1680 # Clearing GMPINC is necessary to prevent host headers being
1681 # used by the build compiler. Defining GENERATOR_FILE stops
1682 # system.h from including gmp.h.
1683 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1684 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1685 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1686 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1687 ${realsrcdir}/configure \
1688 --enable-languages=${enable_languages-all} \
1689 --target=$target_alias --host=$build_alias --build=$build_alias
1691 # We just finished tests for the build machine, so rename
1692 # the file auto-build.h in the gcc directory.
1693 mv auto-host.h ../auto-build.h
1696 build_auto=auto-build.h
1698 AC_SUBST(build_subdir)
1700 tm_file="${tm_file} defaults.h"
1701 tm_p_file="${tm_p_file} tm-preds.h"
1702 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1703 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1704 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1705 # put this back in temporarily.
1706 xm_file="auto-host.h ansidecl.h ${xm_file}"
1713 # Compile in configure arguments.
1714 if test -f configargs.h ; then
1715 # Being re-configured.
1716 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1717 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1719 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1722 # Double all backslashes and backslash all quotes to turn
1723 # gcc_config_arguments into a C string.
1724 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1725 $gcc_config_arguments
1727 gcc_config_arguments_str=`cat conftest.out`
1730 cat > configargs.h <<EOF
1731 /* Generated automatically. */
1732 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1733 static const char thread_model[] = "$thread_file";
1735 static const struct {
1736 const char *name, *value;
1737 } configure_default_options[] = $configure_default_options;
1742 gcc_BASEVER=`cat $srcdir/BASE-VER`
1743 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1744 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1745 if test -f $srcdir/REVISION ; then
1746 gcc_REVISION=`cat $srcdir/REVISION`
1750 cat > plugin-version.h <<EOF
1751 #include "configargs.h"
1753 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1754 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1755 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1756 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1758 static char basever[] = "$gcc_BASEVER";
1759 static char datestamp[] = "$gcc_DATESTAMP";
1760 static char devphase[] = "$gcc_DEVPHASE";
1761 static char revision[] = "$gcc_REVISION";
1763 /* FIXME plugins: We should make the version information more precise.
1764 One way to do is to add a checksum. */
1766 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1768 configuration_arguments};
1772 # Internationalization
1773 ZW_GNU_GETTEXT_SISTER_DIR
1775 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1776 # -liconv on the link line twice.
1777 case "$LIBINTL" in *$LIBICONV*)
1781 AC_ARG_ENABLE(secureplt,
1782 [AS_HELP_STRING([--enable-secureplt],
1783 [enable -msecure-plt by default for PowerPC])],
1786 AC_ARG_ENABLE(leading-mingw64-underscores,
1787 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1788 [enable leading underscores on 64 bit mingw targets]),
1790 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1791 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1792 [Define if we should use leading underscore on 64 bit mingw targets])])
1795 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1798 AC_ARG_ENABLE(frame-pointer,
1799 [AS_HELP_STRING([--enable-frame-pointer],
1800 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1803 linux* | darwin[[8912]]*)
1804 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1806 enable_frame_pointer=no
1809 enable_frame_pointer=yes
1814 # Windows32 Registry support for specifying GCC installation paths.
1815 AC_ARG_ENABLE(win32-registry,
1816 [AS_HELP_STRING([--disable-win32-registry],
1817 [disable lookup of installation paths in the
1818 Registry on Windows hosts])
1819 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1820 AS_HELP_STRING([--enable-win32-registry=KEY],
1821 [use KEY instead of GCC version as the last portion
1822 of the registry key])],,)
1825 win32 | pe | cygwin* | mingw32* | uwin*)
1826 if test "x$enable_win32_registry" != xno; then
1827 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1830 if test "x$enable_win32_registry" != xno; then
1831 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1832 [Define to 1 if installation paths should be looked up in the Windows
1833 Registry. Ignored on non-Windows hosts.])
1835 if test "x$enable_win32_registry" != xyes \
1836 && test "x$enable_win32_registry" != x; then
1837 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1838 [Define to be the last component of the Windows registry key under which
1839 to look for installation paths. The full key used will be
1840 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1841 The default is the GCC version number.])
1847 # Get an absolute path to the GCC top-level source directory
1848 holddir=`${PWDCMD-pwd}`
1850 topdir=`${PWDCMD-pwd}`
1853 # Conditionalize the makefile for this host machine.
1855 for f in ${host_xmake_file}
1857 if test -f ${srcdir}/config/$f
1859 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1863 # Conditionalize the makefile for this target machine.
1865 for f in ${tmake_file}
1867 if test -f ${srcdir}/config/$f
1869 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1872 tmake_file="${tmake_file_}"
1874 out_object_file=`basename $out_file .c`.o
1875 common_out_object_file=`basename $common_out_file .c`.o
1877 tm_file_list="options.h"
1878 tm_include_list="options.h insn-constants.h"
1879 for f in $tm_file; do
1882 f=`echo $f | sed 's/^..//'`
1883 tm_file_list="${tm_file_list} $f"
1884 tm_include_list="${tm_include_list} $f"
1887 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1888 tm_include_list="${tm_include_list} $f"
1891 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1892 tm_include_list="${tm_include_list} config/$f"
1899 for f in $tm_p_file; do
1902 tm_p_file_list="${tm_p_file_list} $f"
1903 tm_p_include_list="${tm_p_include_list} $f"
1906 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1907 tm_p_include_list="${tm_p_include_list} config/$f"
1913 for f in $xm_file; do
1916 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1917 xm_include_list="${xm_include_list} $f"
1920 xm_file_list="${xm_file_list} $f"
1921 xm_include_list="${xm_include_list} $f"
1924 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1925 xm_include_list="${xm_include_list} config/$f"
1931 host_xm_include_list=
1932 for f in $host_xm_file; do
1935 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1936 host_xm_include_list="${host_xm_include_list} $f"
1939 host_xm_file_list="${host_xm_file_list} $f"
1940 host_xm_include_list="${host_xm_include_list} $f"
1943 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1944 host_xm_include_list="${host_xm_include_list} config/$f"
1950 for f in $build_xm_file; do
1953 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1954 build_xm_include_list="${build_xm_include_list} $f"
1956 auto-build.h | auto-host.h )
1957 build_xm_file_list="${build_xm_file_list} $f"
1958 build_xm_include_list="${build_xm_include_list} $f"
1961 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1962 build_xm_include_list="${build_xm_include_list} config/$f"
1967 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1968 # cross-compiler which does not use the native headers and libraries.
1969 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1970 CROSS= AC_SUBST(CROSS)
1971 ALL=all.internal AC_SUBST(ALL)
1972 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1974 if test "x$with_build_sysroot" != x; then
1975 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1977 # This value is used, even on a native system, because
1978 # CROSS_SYSTEM_HEADER_DIR is just
1979 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1980 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1983 if test x$host != x$target
1985 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1987 SYSTEM_HEADER_DIR=$build_system_header_dir
1988 case "$host","$target" in
1989 # Darwin crosses can use the host system's libraries and headers,
1990 # because of the fat library support. Of course, it must be the
1991 # same version of Darwin on both sides. Allow the user to
1992 # just say --target=foo-darwin without a version number to mean
1993 # "the version on this system".
1994 *-*-darwin*,*-*-darwin*)
1995 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1996 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1997 if test $hostos = $targetos -o $targetos = darwin ; then
1999 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2004 i?86-*-*,x86_64-*-* \
2005 | powerpc*-*-*,powerpc64*-*-*)
2006 CROSS="$CROSS -DNATIVE_CROSS" ;;
2011 if test "x$with_headers" = x; then
2018 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2019 SYSTEM_HEADER_DIR=$build_system_header_dir
2022 # If this is a cross-compiler that does not
2023 # have its own set of headers then define
2026 # If this is using newlib, without having the headers available now,
2027 # then define inhibit_libc in LIBGCC2_CFLAGS.
2028 # This prevents libgcc2 from containing any code which requires libc
2030 : ${inhibit_libc=false}
2031 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2032 test x$with_newlib = xyes ; } &&
2033 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
2036 AC_SUBST(inhibit_libc)
2038 # When building gcc with a cross-compiler, we need to adjust things so
2039 # that the generator programs are still built with the native compiler.
2040 # Also, we cannot run fixincludes.
2042 # These are the normal (build=host) settings:
2043 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2044 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2045 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2046 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2047 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2048 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2050 # And these apply if build != host, or we are generating coverage data
2051 if test x$build != x$host || test "x$coverage_flags" != x
2053 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2054 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2055 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2058 # Expand extra_headers to include complete path.
2059 # This substitutes for lots of t-* files.
2061 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2062 for file in ${extra_headers} ; do
2063 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2066 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2067 if test x"$use_gcc_tgmath" = xyes
2068 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2071 # Define collect2 in Makefile.
2072 case $host_can_use_collect2 in
2074 *) collect2='collect2$(exeext)' ;;
2076 AC_SUBST([collect2])
2078 # Add a definition of USE_COLLECT2 if system wants one.
2079 case $use_collect2 in
2080 no) use_collect2= ;;
2083 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2084 xm_defines="${xm_defines} USE_COLLECT2"
2085 case $host_can_use_collect2 in
2087 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2093 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2094 [Define to the name of the LTO plugin DSO that must be
2095 passed to the linker's -plugin=LIB option.])
2097 # ---------------------------
2098 # Assembler & linker features
2099 # ---------------------------
2101 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2102 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2103 # However when ld-new is first executed from the build tree, libtool will
2104 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2105 # to the build tree. While doing this we need to use the previous-stage
2106 # linker, or we have an infinite loop. The presence of a shell script as
2107 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2108 # the gcc/collect-ld script. So we need to know how libtool works, or
2109 # exec-tool will fail.
2111 m4_defun([_LT_CONFIG_COMMANDS], [])
2114 AC_SUBST(enable_fast_install)
2116 # Identify the assembler which will work hand-in-glove with the newly
2117 # built GCC, so that we can examine its features. This is the assembler
2118 # which will be driven by the driver program.
2120 # If build != host, and we aren't building gas in-tree, we identify a
2121 # build->target assembler and hope that it will have the same features
2122 # as the host->target assembler we'll be using.
2123 gcc_cv_gas_major_version=
2124 gcc_cv_gas_minor_version=
2125 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2127 m4_pattern_allow([AS_FOR_TARGET])dnl
2128 AS_VAR_SET_IF(gcc_cv_as,, [
2129 if test -x "$DEFAULT_ASSEMBLER"; then
2130 gcc_cv_as="$DEFAULT_ASSEMBLER"
2131 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2132 && test -f ../gas/Makefile \
2133 && test x$build = x$host; then
2134 gcc_cv_as=../gas/as-new$build_exeext
2135 elif test -x as$build_exeext; then
2136 # Build using assembler in the current directory.
2137 gcc_cv_as=./as$build_exeext
2138 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2139 gcc_cv_as="$AS_FOR_TARGET"
2141 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2144 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2145 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2146 case "$ORIGINAL_AS_FOR_TARGET" in
2147 ./as | ./as$build_exeext) ;;
2148 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2151 AC_MSG_CHECKING(what assembler to use)
2152 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2153 # Single tree build which includes gas. We want to prefer it
2154 # over whatever linker top-level may have detected, since
2155 # we'll use what we're building after installation anyway.
2156 AC_MSG_RESULT(newly built gas)
2158 _gcc_COMPUTE_GAS_VERSION
2159 in_tree_gas_is_elf=no
2160 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2161 || (grep 'obj_format = multi' ../gas/Makefile \
2162 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2164 in_tree_gas_is_elf=yes
2167 AC_MSG_RESULT($gcc_cv_as)
2173 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2174 [case "${enableval}" in
2181 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2182 [case "${enableval}" in
2184 install_gold_as_default=yes
2187 if test x${default_ld} != x; then
2188 install_gold_as_default=yes
2194 AC_MSG_ERROR([invalid --enable-gold argument])
2197 [install_gold_as_default=no])
2199 # Identify the linker which will work hand-in-glove with the newly
2200 # built GCC, so that we can examine its features. This is the linker
2201 # which will be driven by the driver program.
2203 # If build != host, and we aren't building gas in-tree, we identify a
2204 # build->target linker and hope that it will have the same features
2205 # as the host->target linker we'll be using.
2206 gcc_cv_gld_major_version=
2207 gcc_cv_gld_minor_version=
2208 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2209 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2210 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2212 AS_VAR_SET_IF(gcc_cv_ld,, [
2213 if test -x "$DEFAULT_LINKER"; then
2214 gcc_cv_ld="$DEFAULT_LINKER"
2215 elif test $install_gold_as_default = yes \
2216 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2217 && test -f ../gold/Makefile \
2218 && test x$build = x$host; then
2219 gcc_cv_ld=../gold/ld-new$build_exeext
2220 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2221 && test -f ../ld/Makefile \
2222 && test x$build = x$host; then
2223 gcc_cv_ld=../ld/ld-new$build_exeext
2224 elif test -x collect-ld$build_exeext; then
2225 # Build using linker in the current directory.
2226 gcc_cv_ld=./collect-ld$build_exeext
2227 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2228 gcc_cv_ld="$LD_FOR_TARGET"
2230 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2233 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2234 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2235 # if the PLUGIN_LD is set ld-new, just have it as ld
2236 # as that is the installed named.
2237 if test x$PLUGIN_LD_SUFFIX = xld-new \
2238 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2241 AC_ARG_WITH(plugin-ld,
2242 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2243 [if test x"$withval" != x; then
2244 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2245 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2247 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2248 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2250 # Check to see if we are using gold instead of ld
2251 AC_MSG_CHECKING(whether we are using gold)
2253 if test x$gcc_cv_ld != x; then
2254 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2255 | grep "GNU gold" > /dev/null; then
2259 AC_MSG_RESULT($ld_is_gold)
2261 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2262 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2263 case "$ORIGINAL_LD_FOR_TARGET" in
2264 ./collect-ld | ./collect-ld$build_exeext) ;;
2265 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2268 AC_MSG_CHECKING(what linker to use)
2269 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2270 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2271 # Single tree build which includes ld. We want to prefer it
2272 # over whatever linker top-level may have detected, since
2273 # we'll use what we're building after installation anyway.
2274 AC_MSG_RESULT(newly built ld)
2276 in_tree_ld_is_elf=no
2277 if (grep 'EMUL = .*elf' ../ld/Makefile \
2278 || grep 'EMUL = .*linux' ../ld/Makefile \
2279 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2280 in_tree_ld_is_elf=yes
2281 elif test "$ld_is_gold" = yes; then
2282 in_tree_ld_is_elf=yes
2284 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
2287 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2288 if test x$gcc_cv_gld_version != x; then
2292 case $gcc_cv_gld_version in
2295 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2298 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2299 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2301 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2302 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2304 AC_MSG_RESULT($gcc_cv_ld)
2306 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2307 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2308 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2311 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2312 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2314 # Figure out what nm we will be using.
2315 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2316 AS_VAR_SET_IF(gcc_cv_nm,, [
2317 if test -f $gcc_cv_binutils_srcdir/configure.in \
2318 && test -f ../binutils/Makefile \
2319 && test x$build = x$host; then
2320 gcc_cv_nm=../binutils/nm-new$build_exeext
2321 elif test -x nm$build_exeext; then
2322 gcc_cv_nm=./nm$build_exeext
2323 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2324 gcc_cv_nm="$NM_FOR_TARGET"
2326 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2329 AC_MSG_CHECKING(what nm to use)
2330 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2331 # Single tree build which includes binutils.
2332 AC_MSG_RESULT(newly built nm)
2335 AC_MSG_RESULT($gcc_cv_nm)
2339 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2340 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2341 case "$ORIGINAL_NM_FOR_TARGET" in
2342 ./nm | ./nm$build_exeext) ;;
2343 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2347 # Figure out what objdump we will be using.
2348 AS_VAR_SET_IF(gcc_cv_objdump,, [
2349 if test -f $gcc_cv_binutils_srcdir/configure.in \
2350 && test -f ../binutils/Makefile \
2351 && test x$build = x$host; then
2352 # Single tree build which includes binutils.
2353 gcc_cv_objdump=../binutils/objdump$build_exeext
2354 elif test -x objdump$build_exeext; then
2355 gcc_cv_objdump=./objdump$build_exeext
2356 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2357 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2359 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2362 AC_MSG_CHECKING(what objdump to use)
2363 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2364 # Single tree build which includes binutils.
2365 AC_MSG_RESULT(newly built objdump)
2366 elif test x$gcc_cv_objdump = x; then
2367 AC_MSG_RESULT(not found)
2369 AC_MSG_RESULT($gcc_cv_objdump)
2372 # Figure out what readelf we will be using.
2373 AS_VAR_SET_IF(gcc_cv_readelf,, [
2374 if test -f $gcc_cv_binutils_srcdir/configure.in \
2375 && test -f ../binutils/Makefile \
2376 && test x$build = x$host; then
2377 # Single tree build which includes binutils.
2378 gcc_cv_readelf=../binutils/readelf$build_exeext
2379 elif test -x readelf$build_exeext; then
2380 gcc_cv_readelf=./readelf$build_exeext
2382 AC_PATH_PROG(gcc_cv_readelf, readelf)
2385 AC_MSG_CHECKING(what readelf to use)
2386 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2387 # Single tree build which includes binutils.
2388 AC_MSG_RESULT(newly built readelf)
2389 elif test x$gcc_cv_readelf = x; then
2390 AC_MSG_RESULT(not found)
2392 AC_MSG_RESULT($gcc_cv_readelf)
2395 # Figure out what assembler alignment features are present.
2396 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2400 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2401 [Define if your assembler supports .balign and .p2align.])])
2403 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2406 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2407 [Define if your assembler supports specifying the maximum number
2408 of bytes to skip when using the GAS .p2align command.])])
2410 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2413 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2414 [Define if your assembler supports .literal16.])])
2416 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2418 [conftest_label1: .word 0
2420 conftest_label2: .word 0
2422 [if test x$gcc_cv_nm != x; then
2423 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2424 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2425 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2427 else gcc_cv_as_subsection_m1=yes
2429 rm -f conftest.nm1 conftest.nm2
2431 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2432 [Define if your assembler supports .subsection and .subsection -1 starts
2433 emitting at the beginning of your section.])])
2435 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2438 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2440 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2442 [ .weakref foobar, barfnot],,
2443 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2445 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2448 .NSUBSPA $CODE$,COMDAT],,
2449 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2451 # .hidden needs to be supported in both the assembler and the linker,
2452 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2453 # This is irritatingly difficult to feature test for; we have to check the
2454 # date string after the version number. If we've got an in-tree
2455 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2457 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2458 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2464 # Darwin as has some visibility support, though with a different syntax.
2465 gcc_cv_as_hidden=yes
2469 # gnu_indirect_function type is an extension proposed at
2470 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2471 # selection of function implementation
2472 AC_ARG_ENABLE(gnu-indirect-function,
2473 [AS_HELP_STRING([--enable-gnu-indirect-function],
2474 [enable the use of the @gnu_indirect_function to glibc systems])],
2475 [case $enable_gnu_indirect_function in
2477 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2478 Valid choices are 'yes' and 'no'.]) ;;
2480 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2482 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2483 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2484 [Define if your system supports gnu indirect functions.])
2488 if test $in_tree_ld != yes ; then
2489 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2490 if echo "$ld_ver" | grep GNU > /dev/null; then
2491 if test x"$ld_is_gold" = xyes; then
2492 # GNU gold --version looks like this:
2494 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2496 # We extract the binutils version which is more familiar and specific
2497 # than the gold version.
2498 ld_vers=`echo $ld_ver | sed -n \
2499 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2501 # GNU ld --version looks like this:
2503 # GNU ld (GNU Binutils) 2.21.51.20110225
2504 ld_vers=`echo $ld_ver | sed -n \
2505 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2507 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2508 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2509 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2510 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2514 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2517 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2518 # /usr/ccs/bin/ld has been configured.
2519 ld_ver=`$gcc_cv_ld -V 2>&1`
2520 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2521 ld_vers=`echo $ld_ver | sed -n \
2522 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2523 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2524 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2532 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2533 [[if test $in_tree_ld = yes ; then
2535 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2536 && test $in_tree_ld_is_elf = yes; then
2537 gcc_cv_ld_hidden=yes
2540 gcc_cv_ld_hidden=yes
2541 if test x"$ld_is_gold" = xyes; then
2543 elif echo "$ld_ver" | grep GNU > /dev/null; then
2545 mmix-knuth-mmixware)
2546 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2550 if test 0"$ld_date" -lt 20020404; then
2551 if test -n "$ld_date"; then
2552 # If there was date string, but was earlier than 2002-04-04, fail
2554 elif test -z "$ld_vers"; then
2555 # If there was no date string nor ld version number, something is wrong
2558 test -z "$ld_vers_patch" && ld_vers_patch=0
2559 if test "$ld_vers_major" -lt 2; then
2561 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2562 gcc_cv_ld_hidden="no"
2563 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2571 # Darwin ld has some visibility support.
2572 gcc_cv_ld_hidden=yes
2574 hppa64*-*-hpux* | ia64*-*-hpux*)
2575 gcc_cv_ld_hidden=yes
2577 *-*-solaris2.1[0-9]*)
2578 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2579 # .symbolic was only added in Solaris 9 12/02.
2580 gcc_cv_ld_hidden=yes
2588 libgcc_visibility=no
2589 AC_SUBST(libgcc_visibility)
2590 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2591 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2592 libgcc_visibility=yes
2593 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2594 [Define if your assembler and linker support .hidden.])
2597 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2598 gcc_cv_ld_ro_rw_mix=unknown
2599 if test $in_tree_ld = yes ; then
2600 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2601 && test $in_tree_ld_is_elf = yes; then
2602 gcc_cv_ld_ro_rw_mix=read-write
2604 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2605 echo '.section myfoosect, "a"' > conftest1.s
2606 echo '.section myfoosect, "aw"' > conftest2.s
2607 echo '.byte 1' >> conftest2.s
2608 echo '.section myfoosect, "a"' > conftest3.s
2609 echo '.byte 0' >> conftest3.s
2610 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2611 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2612 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2613 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2614 conftest2.o conftest3.o > /dev/null 2>&1; then
2615 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2616 | sed -e '/myfoosect/!d' -e N`
2617 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2618 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2619 gcc_cv_ld_ro_rw_mix=read-only
2621 gcc_cv_ld_ro_rw_mix=read-write
2626 rm -f conftest.* conftest[123].*
2629 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2630 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2631 [Define if your linker links a mix of read-only
2632 and read-write sections into a read-write section.])
2634 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2636 gcc_AC_INITFINI_ARRAY
2638 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2639 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2647 [[# GAS versions before 2.11 do not support uleb128,
2648 # despite appearing to.
2649 # ??? There exists an elf-specific test that will crash
2650 # the assembler. Perhaps it's better to figure out whether
2651 # arbitrary sections are supported and try the test.
2652 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2653 if echo "$as_ver" | grep GNU > /dev/null; then
2654 as_vers=`echo $as_ver | sed -n \
2655 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2656 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2657 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2658 if test $as_major -eq 2 && test $as_minor -lt 11
2660 else gcc_cv_as_leb128=yes
2663 [AC_DEFINE(HAVE_AS_LEB128, 1,
2664 [Define if your assembler supports .sleb128 and .uleb128.])])
2666 # Check if we have assembler support for unwind directives.
2667 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2674 .cfi_escape 1, 2, 3, 4, 5
2678 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2679 # read-only and read-write sections, we need to make sure that the
2680 # assembler used emits read-write .eh_frame sections.
2681 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2682 if test "x$gcc_cv_objdump" != x; then
2683 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2684 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2685 gcc_cv_as_cfi_directive=no
2688 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2689 # On Solaris/x86, make sure that GCC and assembler agree on using
2690 # read-only .eh_frame sections for 64-bit.
2691 if test x$gas = xyes; then
2692 as_ix86_64_opt="--64"
2694 as_ix86_64_opt="-xarch=amd64"
2696 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2697 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2698 sed -e /.eh_frame/!d -e N | \
2699 grep READONLY > /dev/null; then
2700 gcc_cv_as_cfi_directive=yes
2702 gcc_cv_as_cfi_directive=no
2706 gcc_cv_as_cfi_directive=yes
2711 # no objdump, err on the side of caution
2712 gcc_cv_as_cfi_directive=no
2715 gcc_cv_as_cfi_directive=yes
2719 gcc_cv_as_cfi_directive=yes
2722 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2723 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2727 .cfi_adjust_cfa_offset 64
2729 .cfi_adjust_cfa_offset 128
2732 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2733 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2734 gcc_cv_as_cfi_advance_working=yes
2738 # no objdump, err on the side of caution
2739 gcc_cv_as_cfi_advance_working=no
2741 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2742 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2743 [`if test $gcc_cv_as_cfi_directive = yes \
2744 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2745 [Define 0/1 if your assembler supports CFI directives.])
2747 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2748 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2749 gcc_cv_as_cfi_personality_directive, ,,
2752 .cfi_personality 0, symbol
2754 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2755 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2756 then echo 1; else echo 0; fi`],
2757 [Define 0/1 if your assembler supports .cfi_personality.])
2759 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2760 gcc_cv_as_cfi_sections_directive, ,,
2762 .cfi_sections .debug_frame, .eh_frame
2766 win32 | pe | cygwin* | mingw32* | uwin*)
2767 # Need to check that we generated the correct relocation for the
2768 # .debug_frame section. This was fixed for binutils 2.21.
2769 gcc_cv_as_cfi_sections_directive=no
2770 if test "x$gcc_cv_objdump" != x; then
2771 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2772 grep secrel > /dev/null; then
2773 gcc_cv_as_cfi_sections_directive=yes
2778 gcc_cv_as_cfi_sections_directive=yes
2781 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2782 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2783 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2784 then echo 1; else echo 0; fi`],
2785 [Define 0/1 if your assembler supports .cfi_sections.])
2787 # GAS versions up to and including 2.11.0 may mis-optimize
2789 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2797 .section .eh_frame,"aw",@progbits
2799 .4byte .LECIE1-.LSCIE1
2813 .4byte .LEFDE1-.LASFDE1
2815 .4byte .LASFDE1-__FRAME_BEGIN__
2823 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2824 cat > conftest.lit <<EOF
2825 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2826 0010 01000000 12000000 18000000 00000000 ................
2827 0020 08000000 04080000 0044 .........D @&t@
2829 cat > conftest.big <<EOF
2830 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2831 0010 00000001 00000012 00000018 00000000 ................
2832 0020 00000008 04000000 0844 .........D @&t@
2834 # If the assembler didn't choke, and we can objdump,
2835 # and we got the correct data, then succeed.
2836 # The text in the here-document typically retains its unix-style line
2837 # endings, while the output of objdump will use host line endings.
2838 # Therefore, use diff -b for the comparisons.
2839 if test x$gcc_cv_objdump != x \
2840 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2841 | tail -3 > conftest.got \
2842 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2843 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2845 gcc_cv_as_eh_frame=yes
2846 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2847 gcc_cv_as_eh_frame=buggy
2849 # Uh oh, what do we do now?
2850 gcc_cv_as_eh_frame=no
2853 if test $gcc_cv_as_eh_frame = buggy; then
2854 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2855 [Define if your assembler mis-optimizes .eh_frame data.])
2858 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2859 [elf,2,12,0], [--fatal-warnings],
2860 [.section .rodata.str, "aMS", @progbits, 1])
2861 if test $gcc_cv_as_shf_merge = no; then
2862 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2863 [elf,2,12,0], [--fatal-warnings],
2864 [.section .rodata.str, "aMS", %progbits, 1])
2866 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2867 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2868 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2870 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2871 gcc_cv_as_comdat_group,
2872 [elf,2,16,0], [--fatal-warnings],
2873 [.section .text,"axG",@progbits,.foo,comdat])
2874 if test $gcc_cv_as_comdat_group = yes; then
2875 gcc_cv_as_comdat_group_percent=no
2876 gcc_cv_as_comdat_group_group=no
2878 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2879 gcc_cv_as_comdat_group_percent,
2880 [elf,2,16,0], [--fatal-warnings],
2881 [.section .text,"axG",%progbits,.foo,comdat])
2882 if test $gcc_cv_as_comdat_group_percent = yes; then
2883 gcc_cv_as_comdat_group_group=no
2885 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2886 gcc_cv_as_comdat_group_group=no
2889 # Sun as uses a completely different syntax.
2894 .group foo,".text%foo",#comdat
2895 .section ".text%foo", #alloc,#execinstr,#progbits
2900 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2902 .group foo,.text%foo,#comdat
2903 .section .text%foo, "ax", @progbits
2909 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2910 gcc_cv_as_comdat_group_group,
2916 if test x"$ld_is_gold" = xyes; then
2918 elif test $in_tree_ld = yes ; then
2920 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2921 && test $in_tree_ld_is_elf = yes; then
2924 elif echo "$ld_ver" | grep GNU > /dev/null; then
2926 if test 0"$ld_date" -lt 20050308; then
2927 if test -n "$ld_date"; then
2928 # If there was date string, but was earlier than 2005-03-08, fail
2930 elif test "$ld_vers_major" -lt 2; then
2932 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2939 *-*-solaris2.1[1-9]*)
2941 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2942 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2945 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2946 # least ld version 1.2267.
2947 if test "$ld_vers_major" -gt 1; then
2949 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2951 elif test "$ld_vers_minor" -ge 2267; then
2956 # Assume linkers other than GNU ld don't support COMDAT group.
2962 # Allow overriding the automatic COMDAT group tests above.
2963 AC_ARG_ENABLE(comdat,
2964 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2965 [comdat_group="$enable_comdat"])
2966 if test $comdat_group = no; then
2967 gcc_cv_as_comdat_group=no
2968 gcc_cv_as_comdat_group_percent=no
2969 gcc_cv_as_comdat_group_group=no
2971 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2972 [`if test $gcc_cv_as_comdat_group = yes \
2973 || test $gcc_cv_as_comdat_group_percent = yes \
2974 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2975 [Define 0/1 if your assembler and linker support COMDAT groups.])
2977 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2978 gcc_cv_as_discriminator,
2982 .loc 1 1 0 discriminator 1],,
2983 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2984 [Define if your assembler supports the .loc discriminator sub-directive.])])
2986 # Thread-local storage - the check is heavily parameterized.
2995 .section ".tdata","awT",@progbits
2998 ldq $27,__tls_get_addr($29) !literal!1
2999 lda $16,foo($29) !tlsgd!1
3000 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
3001 ldq $27,__tls_get_addr($29) !literal!2
3002 lda $16,foo($29) !tlsldm!2
3003 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
3004 ldq $1,foo($29) !gotdtprel
3005 ldah $2,foo($29) !dtprelhi
3006 lda $3,foo($2) !dtprello
3007 lda $4,foo($29) !dtprel
3008 ldq $1,foo($29) !gottprel
3009 ldah $2,foo($29) !tprelhi
3010 lda $3,foo($2) !tprello
3011 lda $4,foo($29) !tprel'
3014 tls_as_opt=--fatal-warnings
3016 cris-*-*|crisv32-*-*)
3018 .section ".tdata","awT",@progbits
3025 tls_as_opt=--fatal-warnings
3029 .section ".tdata","awT",@progbits
3041 .section ".tdata","awT",@progbits
3045 addil LT%foo-$tls_gdidx$,gp
3046 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3049 addil LT%foo-$tls_ldidx$,gp
3051 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3052 addil LR%foo-$tls_dtpoff$,%ret0
3053 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3055 addil LT%foo-$tls_ieoff$,gp
3056 ldw RT%foo-$tls_ieoff$(%r1),%t2
3059 addil LR%foo-$tls_leoff$,%t1
3060 ldo RR%foo-$tls_leoff$(%r1),%t2'
3063 tls_as_opt=--fatal-warnings
3067 .section ".tdata","awT",%progbits
3078 i[34567]86-*-* | x86_64-*-*)
3080 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3087 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3089 .section .tdata,"awt",@progbits'
3094 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3095 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3099 .section ".tdata","awT",@progbits'
3103 tls_as_opt="--fatal-warnings"
3107 conftest_s="$conftest_s
3111 leal foo@tlsgd(,%ebx,1), %eax
3112 leal foo@tlsldm(%ebx), %eax
3113 leal foo@dtpoff(%eax), %edx
3114 movl foo@gottpoff(%ebx), %eax
3115 subl foo@gottpoff(%ebx), %eax
3116 addl foo@gotntpoff(%ebx), %eax
3117 movl foo@indntpoff, %eax
3118 movl \$foo@tpoff, %eax
3119 subl \$foo@tpoff, %eax
3120 leal foo@ntpoff(%ecx), %eax"
3123 if test x$on_solaris = xyes; then
3125 yes) tls_as_opt="$tls_as_opt --64" ;;
3126 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3129 conftest_s="$conftest_s
3133 leaq foo@tlsgd(%rip), %rdi
3134 leaq foo@tlsld(%rip), %rdi
3135 leaq foo@dtpoff(%rax), %rdx
3136 movq foo@gottpoff(%rip), %rax
3137 movq \$foo@tpoff, %rax"
3143 .section ".tdata","awT",@progbits
3146 addl r16 = @ltoff(@dtpmod(foo#)), gp
3147 addl r17 = @ltoff(@dtprel(foo#)), gp
3148 addl r18 = @ltoff(@tprel(foo#)), gp
3149 addl r19 = @dtprel(foo#), gp
3150 adds r21 = @dtprel(foo#), r13
3151 movl r23 = @dtprel(foo#)
3152 addl r20 = @tprel(foo#), gp
3153 adds r22 = @tprel(foo#), r13
3154 movl r24 = @tprel(foo#)'
3157 tls_as_opt=--fatal-warnings
3161 .section .tdata,"awT",@progbits
3165 addik r5,r20,x@TLSGD
3166 addik r5,r20,x@TLSLDM'
3169 tls_as_opt='--fatal-warnings'
3173 .section .tdata,"awT",@progbits
3177 addiu $4, $28, %tlsgd(x)
3178 addiu $4, $28, %tlsldm(x)
3179 lui $4, %dtprel_hi(x)
3180 addiu $4, $4, %dtprel_lo(x)
3181 lw $4, %gottprel(x)($28)
3182 lui $4, %tprel_hi(x)
3183 addiu $4, $4, %tprel_lo(x)'
3186 tls_as_opt='-32 --fatal-warnings'
3190 .section .tdata,"awT",@progbits
3195 move.l x@TLSGD(%a5),%a0
3196 move.l x@TLSLDM(%a5),%a0
3197 move.l x@TLSLDO(%a5),%a0
3198 move.l x@TLSIE(%a5),%a0
3199 move.l x@TLSLE(%a5),%a0'
3202 tls_as_opt='--fatal-warnings'
3206 .section ".tdata","awT",@progbits'
3209 tls_as_opt="--fatal-warnings"
3213 .section ".tdata","awT",%progbits
3217 add x0, x0, #:tlsgd_lo12:x
3222 tls_as_opt='--fatal-warnings'
3226 .extern __get_tpointer
3244 .section ".tdata","awT",@progbits
3252 addi 3,2,ld0@got@tlsgd
3258 addi 3,2,x1@got@tlsld
3264 addis 9,3,x2@dtprel@ha
3265 addi 9,9,x2@dtprel@l
3268 ld 9,x3@got@dtprel(2)
3274 tls_as_opt="-a64 --fatal-warnings"
3278 .section ".tdata","awT",@progbits
3286 addi 3,31,ld0@got@tlsgd
3288 addi 3,31,x1@got@tlsld
3291 addis 9,3,x2@dtprel@ha
3292 addi 9,9,x2@dtprel@l
3293 lwz 9,x3@got@tprel(31)
3296 addis 9,2,x2@tprel@ha
3297 addi 9,9,x2@tprel@l'
3300 tls_as_opt="-a32 --fatal-warnings"
3304 .section ".tdata","awT",@progbits
3313 l %r1,foo@GOTNTPOFF(%r12)
3314 l %r1,0(%r1):tls_load:foo
3315 bas %r14,0(%r1,%r13):tls_gdcall:foo
3316 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3319 tls_as_opt="-m31 --fatal-warnings"
3323 .section ".tdata","awT",@progbits
3331 lg %r1,foo@GOTNTPOFF(%r12)
3332 larl %r1,foo@INDNTPOFF
3333 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3334 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3337 tls_as_opt="-m64 -Aesame --fatal-warnings"
3339 sh-*-* | sh[34]-*-*)
3341 .section ".tdata","awT",@progbits
3351 tls_as_opt=--fatal-warnings
3355 sparc*-sun-solaris2.*)
3362 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3364 .section ".tdata",#alloc,#write,#tls'
3369 .section ".tdata","awT",@progbits'
3372 tls_as_opt="-32 --fatal-warnings"
3374 conftest_s="$conftest_s
3377 sethi %tgd_hi22(foo), %o0
3378 add %o0, %tgd_lo10(foo), %o1
3379 add %l7, %o1, %o0, %tgd_add(foo)
3380 call __tls_get_addr, %tgd_call(foo)
3381 sethi %tldm_hi22(foo), %l1
3382 add %l1, %tldm_lo10(foo), %l2
3383 add %l7, %l2, %o0, %tldm_add(foo)
3384 call __tls_get_addr, %tldm_call(foo)
3385 sethi %tldo_hix22(foo), %l3
3386 xor %l3, %tldo_lox10(foo), %l4
3387 add %o0, %l4, %l5, %tldo_add(foo)
3388 sethi %tie_hi22(foo), %o3
3389 add %o3, %tie_lo10(foo), %o3
3390 ld [%l7 + %o3], %o2, %tie_ld(foo)
3391 add %g7, %o2, %o4, %tie_add(foo)
3392 sethi %tle_hix22(foo), %l1
3393 xor %l1, %tle_lox10(foo), %o5
3394 ld [%g7 + %o5], %o1"
3398 .section ".tdata","awT",@progbits
3401 addli r0, zero, tls_gd(foo)
3402 auli r0, zero, tls_gd_ha16(foo)
3403 addli r0, r0, tls_gd_lo16(foo)
3405 addli r0, zero, tls_ie(foo)
3406 auli r0, r0, tls_ie_ha16(foo)
3407 addli r0, r0, tls_ie_lo16(foo)'
3410 tls_as_opt="--fatal-warnings"
3414 .section ".tdata","awT",@progbits
3417 shl16insli r0, zero, hw0_last_tls_gd(foo)
3418 shl16insli r0, zero, hw1_last_tls_gd(foo)
3419 shl16insli r0, r0, hw0_tls_gd(foo)
3421 shl16insli r0, zero, hw1_last_tls_ie(foo)
3422 shl16insli r0, r0, hw0_tls_ie(foo)'
3425 tls_as_opt="--fatal-warnings"
3429 .section ".tdata","awT",@progbits
3432 movi a8, foo@TLSFUNC
3433 movi a10, foo@TLSARG
3434 callx8.tls a8, foo@TLSCALL'
3441 if test "x$enable_tls" = xno ; then
3442 : # TLS explicitly disabled.
3443 elif test "x$enable_tls" = xyes ; then
3444 set_have_as_tls=yes # TLS explicitly enabled.
3445 elif test -z "$tls_first_major"; then
3446 : # If we don't have a check, assume no support.
3448 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3449 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3450 [set_have_as_tls=yes])
3452 if test $set_have_as_tls = yes ; then
3453 AC_DEFINE(HAVE_AS_TLS, 1,
3454 [Define if your assembler and linker support thread-local storage.])
3457 # Target-specific assembler checks.
3459 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3460 gcc_cv_ld_static_dynamic=no
3461 gcc_cv_ld_static_option='-Bstatic'
3462 gcc_cv_ld_dynamic_option='-Bdynamic'
3463 if test $in_tree_ld = yes ; then
3464 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3465 gcc_cv_ld_static_dynamic=yes
3467 elif test x$gcc_cv_ld != x; then
3468 # Check if linker supports -Bstatic/-Bdynamic option
3469 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3470 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3471 gcc_cv_ld_static_dynamic=yes
3474 # AIX ld uses -b flags
3475 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3476 gcc_cv_ld_static_dynamic=yes
3477 gcc_cv_ld_static_option="-bstatic"
3478 gcc_cv_ld_dynamic_option="-bdynamic"
3480 # HP-UX ld uses -a flags to select between shared and archive.
3482 if test x"$gnu_ld" = xno; then
3483 gcc_cv_ld_static_dynamic=yes
3484 gcc_cv_ld_static_option="-aarchive_shared"
3485 gcc_cv_ld_dynamic_option="-adefault"
3488 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3490 gcc_cv_ld_static_dynamic=yes
3495 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3496 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3497 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3498 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3499 [Define to the linker option to disable use of shared objects.])
3500 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3501 [Define to the linker option to enable use of shared objects.])
3503 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3505 if test x"$demangler_in_ld" = xyes; then
3506 AC_MSG_CHECKING(linker --demangle support)
3507 gcc_cv_ld_demangle=no
3508 if test $in_tree_ld = yes; then
3509 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3510 gcc_cv_ld_demangle=yes
3512 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3513 # Check if the GNU linker supports --demangle option
3514 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3515 gcc_cv_ld_demangle=yes
3518 if test x"$gcc_cv_ld_demangle" = xyes; then
3519 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3520 [Define if your linker supports --demangle option.])
3522 AC_MSG_RESULT($gcc_cv_ld_demangle)
3525 AC_MSG_CHECKING(linker plugin support)
3527 if test -f liblto_plugin.la; then
3528 save_ld_ver="$ld_ver"
3529 save_ld_vers_major="$ld_vers_major"
3530 save_ld_vers_minor="$ld_vers_minor"
3531 save_ld_is_gold="$ld_is_gold"
3535 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3537 # FIXME: ld_is_gold?
3538 ld_vers_major="$gcc_cv_gld_major_version"
3539 ld_vers_minor="$gcc_cv_gld_minor_version"
3541 # Determine plugin linker version.
3542 # FIXME: Partial duplicate from above, generalize.
3544 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3545 if echo "$ld_ver" | grep GNU > /dev/null; then
3546 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3548 ld_vers=`echo $ld_ver | sed -n \
3549 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3551 ld_vers=`echo $ld_ver | sed -n \
3552 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3554 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3555 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3560 # Determine plugin support.
3561 if echo "$ld_ver" | grep GNU > /dev/null; then
3562 # Require GNU ld or gold 2.21+ for plugin support by default.
3563 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3565 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3566 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3571 ld_ver="$save_ld_ver"
3572 ld_vers_major="$save_ld_vers_major"
3573 ld_vers_minor="$save_ld_vers_minor"
3574 ld_is_gold="$save_ld_is_gold"
3576 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3577 [Define to the level of your linker's plugin support.])
3578 AC_MSG_RESULT($gcc_cv_lto_plugin)
3582 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3583 [-mabi=lp64], [.text],,,)
3584 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3585 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3586 [Define if your assembler supports the -mabi option.])
3588 if test x$with_abi = xilp32; then
3589 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3590 Upgrade the Assembler.])
3592 if test x"$with_multilib_list" = xdefault; then
3593 TM_MULTILIB_CONFIG=lp64
3595 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3596 for aarch64_multilib in ${aarch64_multilibs}; do
3597 case ${aarch64_multilib} in
3599 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3600 Upgrade the Assembler.])
3610 # All TARGET_ABI_OSF targets.
3611 alpha*-*-linux* | alpha*-*-*bsd*)
3612 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3613 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3616 extbl $3, $2, $3 !lituse_bytoff!1
3617 ldq $2, a($29) !literal!1
3618 ldq $4, b($29) !literal!2
3619 ldq_u $3, 0($2) !lituse_base!1
3620 ldq $27, f($29) !literal!5
3621 jsr $26, ($27), f !lituse_jsr!5
3622 ldah $29, 0($26) !gpdisp!3
3623 lda $0, c($29) !gprel
3624 ldah $1, d($29) !gprelhigh
3625 lda $1, d($1) !gprellow
3626 lda $29, 0($29) !gpdisp!3],,
3627 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3628 [Define if your assembler supports explicit relocations.])])
3629 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3630 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3633 ldq $27, a($29) !literal!1
3634 jsr $26, ($27), a !lituse_jsrdirect!1],,
3635 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3636 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3640 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3641 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3642 [-no-mul-bug-abort], [.text],,
3643 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3644 [Define if your assembler supports the -no-mul-bug-abort option.])])
3648 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3649 [.register %g2, #scratch],,
3650 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3651 [Define if your assembler supports .register.])])
3653 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3654 [.section "nobits",#alloc,#write,#nobits
3655 .section "progbits",#alloc,#write,#progbits])
3656 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3657 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3658 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3660 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3662 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3663 [Define if your assembler supports -relax option.])])
3665 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3666 gcc_cv_as_sparc_gotdata_op,,
3673 sethi %gdop_hix22(foo), %g1
3674 xor %g1, %gdop_lox10(foo), %g1
3675 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3676 [if test x$gcc_cv_ld != x \
3677 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3678 if test x$gcc_cv_objdump != x; then
3679 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3680 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3681 gcc_cv_as_sparc_gotdata_op=no
3683 gcc_cv_as_sparc_gotdata_op=yes
3688 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3689 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3691 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3692 gcc_cv_as_sparc_ua_pcrel,,
3700 .uaword %r_disp32(foo)],
3701 [if test x$gcc_cv_ld != x \
3702 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3703 gcc_cv_as_sparc_ua_pcrel=yes
3706 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3707 [Define if your assembler and linker support unaligned PC relative relocs.])
3709 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3710 gcc_cv_as_sparc_ua_pcrel_hidden,,
3715 .uaword %r_disp32(foo)
3716 .byte 0x32, 0x33, 0x34
3721 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3722 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3723 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3724 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3725 if $gcc_cv_objdump -R conftest 2> /dev/null \
3726 | grep 'DISP32' > /dev/null 2>&1; then
3729 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3733 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3734 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3735 ]) # unaligned pcrel relocs
3737 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3738 gcc_cv_as_sparc_offsetable_lo10,,
3741 or %g1, %lo(ab) + 12, %g1
3742 or %g1, %lo(ab + 12), %g1],
3743 [if test x$gcc_cv_objdump != x \
3744 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3745 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3746 gcc_cv_as_sparc_offsetable_lo10=yes
3748 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3749 [Define if your assembler supports offsetable %lo().])])
3751 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3752 gcc_cv_as_sparc_fmaf,,
3755 .register %g2, #scratch
3756 .register %g3, #scratch
3758 fmaddd %f0, %f2, %f4, %f6
3759 addxccc %g1, %g2, %g3
3760 fsrl32 %f2, %f4, %f8
3761 fnaddd %f10, %f12, %f14],,
3762 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3763 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3765 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3766 gcc_cv_as_sparc_sparc4,,
3769 .register %g2, #scratch
3770 .register %g3, #scratch
3773 1: cwbneg %g2, %g3, 1f
3776 aes_kexpand0 %f4, %f6, %f8
3777 des_round %f38, %f40, %f42, %f44
3778 camellia_f %f54, %f56, %f58, %f60
3779 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3780 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3781 [Define if your assembler supports SPARC4 instructions.])])
3783 gcc_GAS_CHECK_FEATURE([LEON instructions],
3784 gcc_cv_as_sparc_leon,,
3787 .register %g2, #scratch
3788 .register %g3, #scratch
3792 casa [[%g2]] 0xb, %g3, %g1],,
3793 [AC_DEFINE(HAVE_AS_LEON, 1,
3794 [Define if your assembler supports LEON instructions.])])
3798 i[34567]86-*-* | x86_64-*-*)
3802 # Full C++ conformance when using a shared libstdc++-v3 requires some
3803 # support from the Cygwin DLL, which in more recent versions exports
3804 # wrappers to aid in interposing and redirecting operators new, delete,
3805 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3806 # are configuring for a version of Cygwin that exports the wrappers.
3807 if test x$host = x$target && test x$host_cpu = xi686; then
3808 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3810 # Can't check presence of libc functions during cross-compile, so
3811 # we just have to assume we're building for an up-to-date target.
3812 gcc_ac_cygwin_dll_wrappers=yes
3814 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3815 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3816 [Define if you want to generate code by default that assumes that the
3817 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3820 cygwin* | pe | mingw32* | interix*)
3821 # Recent binutils allows the three-operand form of ".comm" on PE. This
3822 # definition is used unconditionally to initialise the default state of
3823 # the target option variable that governs usage of the feature.
3824 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3825 [2,19,52],,[.comm foo,1,32])
3826 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3827 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3828 [Define if your assembler supports specifying the alignment
3829 of objects allocated using the GAS .comm command.])
3830 # Used for DWARF 2 in PE
3831 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3832 gcc_cv_as_ix86_pe_secrel32,
3838 [if test x$gcc_cv_ld != x \
3839 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3840 gcc_cv_as_ix86_pe_secrel32=yes
3843 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3844 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3845 # Test if the assembler supports the extended form of the .section
3846 # directive that specifies section alignment. LTO support uses this,
3847 # but normally only after installation, so we warn but don't fail the
3848 # configure if LTO is enabled but the assembler does not support it.
3849 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3850 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3851 if test x$gcc_cv_as_section_has_align != xyes; then
3852 case ",$enable_languages," in
3854 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3858 # Test if the assembler supports the section flag 'e' for specifying
3859 # an excluded section.
3860 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3864 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3865 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3866 [Define if your assembler supports specifying the section flag e.])
3870 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3871 gcc_cv_as_ix86_filds,,,
3872 [filds mem; fists mem],,
3873 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3874 [Define if your assembler uses filds and fists mnemonics.])])
3876 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3877 gcc_cv_as_ix86_fildq,,,
3878 [fildq mem; fistpq mem],,
3879 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3880 [Define if your assembler uses fildq and fistq mnemonics.])])
3882 gcc_GAS_CHECK_FEATURE([cmov syntax],
3883 gcc_cv_as_ix86_cmov_sun_syntax,,,
3884 [cmovl.l %edx, %eax],,
3885 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3886 [Define if your assembler supports the Sun syntax for cmov.])])
3888 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3889 gcc_cv_as_ix86_ffreep,,,
3891 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3892 [Define if your assembler supports the ffreep mnemonic.])])
3894 gcc_GAS_CHECK_FEATURE([.quad directive],
3895 gcc_cv_as_ix86_quad,,,
3897 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3898 [Define if your assembler supports the .quad directive.])])
3900 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3901 gcc_cv_as_ix86_sahf,,,
3904 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3905 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3907 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3908 gcc_cv_as_ix86_interunit_movq,,,
3912 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3913 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3914 [Define if your assembler supports interunit movq mnemonic.])
3916 gcc_GAS_CHECK_FEATURE([hle prefixes],
3917 gcc_cv_as_ix86_hle,,,
3918 [lock xacquire cmpxchg %esi, (%ecx)],,
3919 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3920 [Define if your assembler supports HLE prefixes.])])
3922 gcc_GAS_CHECK_FEATURE([swap suffix],
3923 gcc_cv_as_ix86_swap,,,
3924 [movl.s %esp, %ebp],,
3925 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3926 [Define if your assembler supports the swap suffix.])])
3928 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3929 gcc_cv_as_ix86_diff_sect_delta,,,
3937 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3938 [Define if your assembler supports the subtraction of symbols in different sections.])])
3940 # These two are used unconditionally by i386.[ch]; it is to be defined
3941 # to 1 if the feature is present, 0 otherwise.
3942 as_ix86_gotoff_in_data_opt=
3943 if test x$gas = xyes; then
3944 as_ix86_gotoff_in_data_opt="--32"
3946 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3947 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3948 [$as_ix86_gotoff_in_data_opt],
3954 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3955 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3956 [Define true if the assembler supports '.long foo@GOTOFF'.])
3958 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3959 gcc_cv_as_ix86_rep_lock_prefix,,,
3965 lock addl %edi, (%eax,%esi)
3966 lock orl $0, (%esp)],,
3967 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3968 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3970 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3971 gcc_cv_as_ix86_ud2,,,
3973 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3974 [Define if your assembler supports the 'ud2' mnemonic.])])
3976 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3977 gcc_cv_as_ix86_tlsgdplt,,,
3978 [call tls_gd@tlsgdplt],
3979 [if test x$gcc_cv_ld != x \
3980 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3981 gcc_cv_as_ix86_tlsgdplt=yes
3984 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3985 [Define if your assembler and linker support @tlsgdplt.])])
3988 .section .tdata,"aw'$tls_section_flag'",@progbits
3990 .section .text,"ax",@progbits
3991 call tls_ld@tlsldmplt'
3992 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3993 gcc_cv_as_ix86_tlsldmplt,,,
3995 [if test x$gcc_cv_ld != x \
3996 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3997 gcc_cv_as_ix86_tlsldmplt=yes
4000 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4001 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4002 [Define to 1 if your assembler and linker support @tlsldmplt.])
4004 # Enforce 32-bit output with gas and gld.
4005 if test x$gas = xyes; then
4006 as_ix86_tls_ldm_opt="--32"
4008 if echo "$ld_ver" | grep GNU > /dev/null; then
4009 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4010 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4012 ld_ix86_tls_ldm_opt="-melf_i386"
4016 .section .text,"ax",@progbits
4018 .type _start, @function
4020 leal value@tlsldm(%ebx), %eax
4021 call ___tls_get_addr@plt
4023 .section .tdata,"aw'$tls_section_flag'",@progbits
4024 .type value, @object
4026 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4027 gcc_cv_as_ix86_tlsldm,,
4028 [$as_ix86_tls_ldm_opt],
4030 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4031 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4032 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4033 || dis conftest 2>/dev/null | grep nop > /dev/null; then
4034 gcc_cv_as_ix86_tlsldm=yes
4038 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4039 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4040 [Define to 1 if your assembler and linker support @tlsldm.])
4045 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4046 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4048 addl r15 = @ltoffx(x#), gp
4050 ld8.mov r16 = [[r15]], x#],,
4051 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4052 [Define if your assembler supports ltoffx and ldxmov relocations.])])
4058 *-*-aix*) conftest_s=' .machine "pwr5"
4062 gcc_GAS_CHECK_FEATURE([.machine directive support],
4063 gcc_cv_as_machine_directive,,,
4064 [ .machine ppc7400])
4065 if test x$gcc_cv_as_machine_directive != xyes; then
4066 echo "*** This target requires an assembler supporting \".machine\"" >&2
4067 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4068 test x$build = x$target && exit 1
4072 *) conftest_s=' .machine power4
4077 gcc_GAS_CHECK_FEATURE([mfcr field support],
4078 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4080 [AC_DEFINE(HAVE_AS_MFCRF, 1,
4081 [Define if your assembler supports mfcr field.])])
4084 *-*-aix*) conftest_s=' .machine "pwr5"
4087 *) conftest_s=' .machine power5
4092 gcc_GAS_CHECK_FEATURE([popcntb support],
4093 gcc_cv_as_powerpc_popcntb, [2,17,0],,
4095 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4096 [Define if your assembler supports popcntb field.])])
4099 *-*-aix*) conftest_s=' .machine "pwr5x"
4102 *) conftest_s=' .machine power5
4107 gcc_GAS_CHECK_FEATURE([fp round support],
4108 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4110 [AC_DEFINE(HAVE_AS_FPRND, 1,
4111 [Define if your assembler supports fprnd.])])
4114 *-*-aix*) conftest_s=' .machine "pwr6"
4117 *) conftest_s=' .machine power6
4122 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4123 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4125 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4126 [Define if your assembler supports mffgpr and mftgpr.])])
4129 *-*-aix*) conftest_s=' .csect .text[[PR]]
4131 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4135 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4136 *) conftest_s=' .text
4138 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4141 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4142 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4144 [AC_DEFINE(HAVE_AS_REL16, 1,
4145 [Define if your assembler supports R_PPC_REL16 relocs.])])
4148 *-*-aix*) conftest_s=' .machine "pwr6"
4151 *) conftest_s=' .machine power6
4156 gcc_GAS_CHECK_FEATURE([compare bytes support],
4157 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4159 [AC_DEFINE(HAVE_AS_CMPB, 1,
4160 [Define if your assembler supports cmpb.])])
4163 *-*-aix*) conftest_s=' .machine "pwr6"
4166 *) conftest_s=' .machine power6
4171 gcc_GAS_CHECK_FEATURE([decimal float support],
4172 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4174 [AC_DEFINE(HAVE_AS_DFP, 1,
4175 [Define if your assembler supports DFP instructions.])])
4178 *-*-aix*) conftest_s=' .machine "pwr7"
4181 *) conftest_s=' .machine power7
4186 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4187 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4189 [AC_DEFINE(HAVE_AS_VSX, 1,
4190 [Define if your assembler supports VSX instructions.])])
4193 *-*-aix*) conftest_s=' .machine "pwr7"
4196 *) conftest_s=' .machine power7
4201 gcc_GAS_CHECK_FEATURE([popcntd support],
4202 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4204 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4205 [Define if your assembler supports POPCNTD instructions.])])
4208 *-*-aix*) conftest_s=' .machine "pwr8"
4209 .csect .text[[PR]]';;
4210 *) conftest_s=' .machine power8
4214 gcc_GAS_CHECK_FEATURE([power8 support],
4215 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4217 [AC_DEFINE(HAVE_AS_POWER8, 1,
4218 [Define if your assembler supports POWER8 instructions.])])
4221 *-*-aix*) conftest_s=' .csect .text[[PR]]
4223 *) conftest_s=' .text
4227 gcc_GAS_CHECK_FEATURE([lwsync support],
4228 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4230 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4231 [Define if your assembler supports LWSYNC instructions.])])
4234 *-*-aix*) conftest_s=' .machine "476"
4237 *) conftest_s=' .machine "476"
4242 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4243 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4245 [AC_DEFINE(HAVE_AS_DCI, 1,
4246 [Define if your assembler supports the DCI/ICI instructions.])])
4248 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4249 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4250 [.gnu_attribute 4,1],,
4251 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4252 [Define if your assembler supports .gnu_attribute.])])
4254 gcc_GAS_CHECK_FEATURE([tls marker support],
4255 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4256 [ bl __tls_get_addr(x@tlsgd)],,
4257 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4258 [Define if your assembler supports arg info for __tls_get_addr.])])
4262 gcc_GAS_CHECK_FEATURE([.ref support],
4263 gcc_cv_as_aix_ref, [2,21,0],,
4264 [ .csect stuff[[rw]]
4270 [AC_DEFINE(HAVE_AS_REF, 1,
4271 [Define if your assembler supports .ref])])
4277 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4278 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4279 [ lw $4,%gp_rel(foo)($4)],,
4280 [if test x$target_cpu_default = x
4281 then target_cpu_default=MASK_EXPLICIT_RELOCS
4282 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4284 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4285 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4286 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4287 [Define if the assembler understands -mno-shared.])])
4289 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4290 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4291 [.gnu_attribute 4,1],,
4292 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4293 [Define if your assembler supports .gnu_attribute.])])
4295 gcc_GAS_CHECK_FEATURE([.micromips support],
4296 gcc_cv_as_micromips_support,,[--fatal-warnings],
4298 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4299 [Define if your assembler supports the .set micromips directive])])
4301 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4302 gcc_cv_as_mips_dtprelword, [2,18,0],,
4303 [.section .tdata,"awT",@progbits
4307 .dtprelword x+0x8000],,
4308 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4309 [Define if your assembler supports .dtprelword.])])
4311 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4312 gcc_cv_as_mips_dspr1_mult,,,
4322 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4323 [Define if your assembler supports DSPR1 mult.])])
4325 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4326 gcc_cv_as_ld_jalr_reloc=no
4327 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4328 if test $in_tree_ld = yes ; then
4329 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4330 && test $in_tree_ld_is_elf = yes; then
4331 gcc_cv_as_ld_jalr_reloc=yes
4333 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4334 echo ' .ent x' > conftest.s
4335 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4336 echo ' lw $25,%call16(y)($28)' >> conftest.s
4337 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4338 echo '1: jalr $25' >> conftest.s
4339 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4340 echo '1: jalr $25' >> conftest.s
4341 echo ' .end x' >> conftest.s
4342 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4343 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4344 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4345 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4346 gcc_cv_as_ld_jalr_reloc=yes
4352 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4353 if test x$target_cpu_default = x; then
4354 target_cpu_default=MASK_RELAX_PIC_CALLS
4356 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4359 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4361 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4362 [gcc_cv_ld_mips_personality_relaxation],
4363 [gcc_cv_ld_mips_personality_relaxation=no
4364 if test $in_tree_ld = yes ; then
4365 if test "$gcc_cv_gld_major_version" -eq 2 \
4366 -a "$gcc_cv_gld_minor_version" -ge 21 \
4367 -o "$gcc_cv_gld_major_version" -gt 2; then
4368 gcc_cv_ld_mips_personality_relaxation=yes
4370 elif test x$gcc_cv_as != x \
4371 -a x$gcc_cv_ld != x \
4372 -a x$gcc_cv_readelf != x ; then
4373 cat > conftest.s <<EOF
4375 .cfi_personality 0x80,indirect_ptr
4382 .section .data,"aw",@progbits
4386 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4387 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4388 if $gcc_cv_readelf -d conftest 2>&1 \
4389 | grep TEXTREL > /dev/null 2>&1; then
4391 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4392 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4395 gcc_cv_ld_mips_personality_relaxation=yes
4399 rm -f conftest.s conftest.o conftest])
4400 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4401 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4402 [Define if your linker can relax absolute .eh_frame personality
4403 pointers into PC-relative form.])
4406 gcc_GAS_CHECK_FEATURE([-mnan= support],
4407 gcc_cv_as_mips_nan,,
4409 [AC_DEFINE(HAVE_AS_NAN, 1,
4410 [Define if the assembler understands -mnan=.])])
4411 if test x$gcc_cv_as_mips_nan = xno \
4412 && test x$with_nan != x; then
4414 [Requesting --with-nan= requires assembler support for -mnan=])
4419 # Mips and HP-UX need the GNU assembler.
4420 # Linux on IA64 might be able to use the Intel assembler.
4423 mips*-*-* | *-*-hpux* )
4424 if test x$gas_flag = xyes \
4425 || test x"$host" != x"$build" \
4426 || test ! -x "$gcc_cv_as" \
4427 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4430 echo "*** This configuration requires the GNU assembler" >&2
4436 # ??? Not all targets support dwarf2 debug_line, even within a version
4437 # of gas. Moreover, we need to emit a valid instruction to trigger any
4438 # info to the output file. So, as supported targets are added to gas 2.11,
4439 # add some instruction here to (also) show we expect this might work.
4440 # ??? Once 2.11 is released, probably need to add first known working
4441 # version to the per-target configury.
4443 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4444 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4445 | xstormy16 | xtensa)
4455 if test x"$insn" != x; then
4457 .file 1 \"conftest.s\"
4460 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4461 gcc_cv_as_dwarf2_debug_line,
4462 [elf,2,11,0],, [$conftest_s],
4463 [if test x$gcc_cv_objdump != x \
4464 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4465 | grep debug_line > /dev/null 2>&1; then
4466 gcc_cv_as_dwarf2_debug_line=yes
4469 # The .debug_line file table must be in the exact order that
4470 # we specified the files, since these indices are also used
4471 # by DW_AT_decl_file. Approximate this test by testing if
4472 # the assembler bitches if the same index is assigned twice.
4473 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4474 gcc_cv_as_dwarf2_file_buggy,,,
4478 if test $gcc_cv_as_dwarf2_debug_line = yes \
4479 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4480 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4481 [Define if your assembler supports dwarf2 .file/.loc directives,
4482 and preserves file table indices exactly as given.])
4485 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4486 gcc_cv_as_gdwarf2_flag,
4487 [elf,2,11,0], [--gdwarf2], [$insn],,
4488 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4489 [Define if your assembler supports the --gdwarf2 option.])])
4491 gcc_GAS_CHECK_FEATURE([--gstabs option],
4492 gcc_cv_as_gstabs_flag,
4493 [elf,2,11,0], [--gstabs], [$insn],,
4494 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4495 [Define if your assembler supports the --gstabs option.])])
4497 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4498 gcc_cv_as_debug_prefix_map_flag,
4499 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4500 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4501 [Define if your assembler supports the --debug-prefix-map option.])])
4504 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4507 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4508 [Define if your assembler supports .lcomm with an alignment field.])])
4510 if test x$with_sysroot = x && test x$host = x$target \
4511 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4512 && test "$prefix" != "NONE"; then
4513 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4514 [Define to PREFIX/include if cpp should also search that directory.])
4517 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4518 if test "x$with_headers" != x; then
4519 target_header_dir=$with_headers
4520 elif test "x$with_sysroot" = x; then
4521 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4522 elif test "x$with_build_sysroot" != "x"; then
4523 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4524 elif test "x$with_sysroot" = xyes; then
4525 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4527 target_header_dir="${with_sysroot}${native_system_header_dir}"
4530 target_header_dir=${native_system_header_dir}
4533 # Determine the version of glibc, if any, used on the target.
4534 AC_MSG_CHECKING([for target glibc version])
4535 AC_ARG_WITH([glibc-version],
4536 [AS_HELP_STRING([--with-glibc-version=M.N],
4537 [assume GCC used with glibc version M.N or later])], [
4538 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4539 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4540 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4542 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4544 glibc_version_major=0
4545 glibc_version_minor=0
4546 [if test -f $target_header_dir/features.h \
4547 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4548 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4549 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4550 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4552 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4554 AC_ARG_ENABLE(gnu-unique-object,
4555 [AS_HELP_STRING([--enable-gnu-unique-object],
4556 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4557 [case $enable_gnu_unique_object in
4559 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4560 Valid choices are 'yes' and 'no'.]) ;;
4562 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4564 [.type foo, '$target_type_format_char'gnu_unique_object],,
4565 # We need to unquote above to to use the definition from config.gcc.
4566 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4567 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4569 if test x$enable_gnu_unique_object = xyes; then
4570 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4571 [Define if your assembler supports @gnu_unique_object.])
4574 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4575 [gcc_cv_as_line_zero],
4576 [gcc_cv_as_line_zero=no
4577 if test $in_tree_gas = yes; then
4578 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4579 elif test "x$gcc_cv_as" != x; then
4580 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4581 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4582 test "x`cat conftest.out`" = x
4584 gcc_cv_as_line_zero=yes
4586 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4587 cat conftest.s >&AS_MESSAGE_LOG_FD
4588 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4589 cat conftest.out >&AS_MESSAGE_LOG_FD
4591 rm -f conftest.o conftest.s conftest.out
4593 if test "x$gcc_cv_as_line_zero" = xyes; then
4594 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4595 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4598 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4599 gcc_cv_ld_eh_frame_hdr=no
4600 if test $in_tree_ld = yes ; then
4601 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4602 && test $in_tree_ld_is_elf = yes; then
4603 gcc_cv_ld_eh_frame_hdr=yes
4605 elif test x$gcc_cv_ld != x; then
4606 if echo "$ld_ver" | grep GNU > /dev/null; then
4607 # Check if linker supports --eh-frame-hdr option
4608 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4609 gcc_cv_ld_eh_frame_hdr=yes
4614 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4615 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4616 gcc_cv_ld_eh_frame_hdr=yes
4622 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4623 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4624 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4625 [Define if your linker supports .eh_frame_hdr.])
4627 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4629 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4630 gcc_cv_ld_eh_frame_ciev3=no
4631 if test $in_tree_ld = yes ; then
4632 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4633 && test $in_tree_ld_is_elf = yes; then
4634 gcc_cv_ld_eh_frame_ciev3=yes
4636 elif test x$gcc_cv_ld != x; then
4637 if echo "$ld_ver" | grep GNU > /dev/null; then
4638 gcc_cv_ld_eh_frame_ciev3=yes
4639 if test 0"$ld_date" -lt 20040513; then
4640 if test -n "$ld_date"; then
4641 # If there was date string, but was earlier than 2004-05-13, fail
4642 gcc_cv_ld_eh_frame_ciev3=no
4643 elif test "$ld_vers_major" -lt 2; then
4644 gcc_cv_ld_eh_frame_ciev3=no
4645 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4646 gcc_cv_ld_eh_frame_ciev3=no
4652 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4653 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4654 gcc_cv_ld_eh_frame_ciev3=yes
4660 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4661 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4662 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4663 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4665 AC_MSG_CHECKING(linker position independent executable support)
4667 if test $in_tree_ld = yes ; then
4668 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4669 && test $in_tree_ld_is_elf = yes; then
4672 elif test x$gcc_cv_ld != x; then
4673 # Check if linker supports -pie option
4674 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4678 if test x"$gcc_cv_ld_pie" = xyes; then
4679 AC_DEFINE(HAVE_LD_PIE, 1,
4680 [Define if your linker supports -pie option.])
4682 AC_MSG_RESULT($gcc_cv_ld_pie)
4684 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4685 gcc_cv_ld_eh_gc_sections=no
4686 if test $in_tree_ld = yes ; then
4687 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4688 && test $in_tree_ld_is_elf = yes; then
4689 gcc_cv_ld_eh_gc_sections=yes
4691 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4692 cat > conftest.s <<EOF
4695 .type _start, @function
4698 .size _start, .-_start
4699 .section .text.foo,"ax",@progbits
4700 .type foo, @function
4704 .section .gcc_except_table.foo,"a",@progbits
4707 .section .eh_frame,"a",@progbits
4710 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4711 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4712 | grep "gc-sections option ignored" > /dev/null; then
4713 gcc_cv_ld_eh_gc_sections=no
4714 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4715 | grep gcc_except_table > /dev/null; then
4716 gcc_cv_ld_eh_gc_sections=yes
4717 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4718 if test x$gcc_cv_as_comdat_group != xyes; then
4719 gcc_cv_ld_eh_gc_sections=no
4720 cat > conftest.s <<EOF
4723 .type _start, @function
4726 .size _start, .-_start
4727 .section .gnu.linkonce.t.foo,"ax",@progbits
4728 .type foo, @function
4732 .section .gcc_except_table.foo,"a",@progbits
4735 .section .eh_frame,"a",@progbits
4738 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4739 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4740 | grep "gc-sections option ignored" > /dev/null; then
4741 gcc_cv_ld_eh_gc_sections=no
4742 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4743 | grep gcc_except_table > /dev/null; then
4744 gcc_cv_ld_eh_gc_sections=yes
4750 rm -f conftest.s conftest.o conftest
4754 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4755 gcc_cv_ld_eh_gc_sections=no
4758 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4759 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4760 [Define if your linker supports garbage collection of
4761 sections in presence of EH frames.])
4763 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4765 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4766 gcc_cv_ld_eh_gc_sections_bug=no
4767 if test $in_tree_ld = yes ; then
4768 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4769 && test $in_tree_ld_is_elf = yes; then
4770 gcc_cv_ld_eh_gc_sections_bug=yes
4772 elif test x$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
4773 gcc_cv_ld_eh_gc_sections_bug=yes
4774 cat > conftest.s <<EOF
4777 .type _start, @function
4780 .size _start, .-_start
4781 .section .text.startup.foo,"ax",@progbits
4782 .type foo, @function
4786 .section .gcc_except_table.foo,"a",@progbits
4789 .section .eh_frame,"a",@progbits
4792 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4793 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4794 | grep "gc-sections option ignored" > /dev/null; then
4796 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4797 | grep gcc_except_table > /dev/null; then
4798 gcc_cv_ld_eh_gc_sections_bug=no
4801 rm -f conftest.s conftest.o conftest
4803 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4804 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4805 [Define if your linker has buggy garbage collection of
4806 sections support when .text.startup.foo like sections are used.])
4808 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4814 AC_CACHE_CHECK(linker --as-needed support,
4815 gcc_cv_ld_as_needed,
4816 [gcc_cv_ld_as_needed=no
4817 gcc_cv_ld_as_needed_option='--as-needed'
4818 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4819 if test $in_tree_ld = yes ; then
4820 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4821 && test $in_tree_ld_is_elf = yes; then
4822 gcc_cv_ld_as_needed=yes
4824 elif test x$gcc_cv_ld != x; then
4825 # Check if linker supports --as-needed and --no-as-needed options
4826 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4827 gcc_cv_ld_as_needed=yes
4830 # Solaris 2 ld always supports -z ignore/-z record.
4832 gcc_cv_ld_as_needed=yes
4833 gcc_cv_ld_as_needed_option="-z ignore"
4834 gcc_cv_ld_no_as_needed_option="-z record"
4839 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4840 # dl_iterate_phdr, i.e. since Solaris 11.
4842 *-*-solaris2.1[[1-9]]*)
4844 i?86-*-* | x86_64-*-*)
4845 if echo "$ld_ver" | grep GNU > /dev/null; then
4846 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4847 gcc_cv_ld_as_needed=no
4853 gcc_cv_ld_as_needed=no
4857 if test x"$gcc_cv_ld_as_needed" = xyes; then
4858 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4859 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4860 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4861 [Define to the linker option to ignore unused dependencies.])
4862 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4863 [Define to the linker option to keep unused dependencies.])
4866 case "$target:$tm_file" in
4867 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4870 emul_name="-melf64lppc"
4873 emul_name="-melf64ppc"
4876 emul_name="-melf64ppc_fbsd"
4879 AC_CACHE_CHECK(linker support for omitting dot symbols,
4880 gcc_cv_ld_no_dot_syms,
4881 [gcc_cv_ld_no_dot_syms=no
4882 if test x"$ld_is_gold" = xyes; then
4883 gcc_cv_ld_no_dot_syms=yes
4884 elif test $in_tree_ld = yes ; then
4885 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4886 gcc_cv_ld_no_dot_syms=yes
4888 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4889 cat > conftest1.s <<EOF
4893 cat > conftest2.s <<EOF
4894 .section ".opd","aw"
4899 .quad .LEfoo,.TOC.@tocbase,0
4905 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4906 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4907 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4908 gcc_cv_ld_no_dot_syms=yes
4910 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4913 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4914 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4915 [Define if your PowerPC64 linker only needs function descriptor syms.])
4918 AC_CACHE_CHECK(linker large toc support,
4919 gcc_cv_ld_large_toc,
4920 [gcc_cv_ld_large_toc=no
4921 if test x"$ld_is_gold" = xyes; then
4922 gcc_cv_ld_large_toc=yes
4923 elif test $in_tree_ld = yes ; then
4924 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4925 gcc_cv_ld_large_toc=yes
4927 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4928 cat > conftest.s <<EOF
4929 .section ".tbss","awT",@nobits
4935 addis 9,13,ie0@got@tprel@ha
4936 ld 9,ie0@got@tprel@l(9)
4938 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4939 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4940 gcc_cv_ld_large_toc=yes
4942 rm -f conftest conftest.o conftest.s
4945 if test x"$gcc_cv_ld_large_toc" = xyes; then
4946 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4947 [Define if your PowerPC64 linker supports a large TOC.])
4954 AC_CACHE_CHECK(linker large toc support,
4955 gcc_cv_ld_large_toc,
4956 [gcc_cv_ld_large_toc=no
4957 if test x$gcc_cv_as != x ; then
4958 cat > conftest.s <<EOF
4968 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4969 gcc_cv_ld_large_toc=yes
4971 rm -f conftest conftest.o conftest.s
4974 if test x"$gcc_cv_ld_large_toc" = xyes; then
4975 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4976 [Define if your PowerPC64 linker supports a large TOC.])
4981 AC_CACHE_CHECK(linker --build-id support,
4983 [gcc_cv_ld_buildid=no
4984 if test $in_tree_ld = yes ; then
4985 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4986 "$gcc_cv_gld_minor_version" -ge 18 -o \
4987 "$gcc_cv_gld_major_version" -gt 2 \
4988 && test $in_tree_ld_is_elf = yes; then
4989 gcc_cv_ld_buildid=yes
4991 elif test x$gcc_cv_ld != x; then
4992 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4993 gcc_cv_ld_buildid=yes
4996 if test x"$gcc_cv_ld_buildid" = xyes; then
4997 AC_DEFINE(HAVE_LD_BUILDID, 1,
4998 [Define if your linker supports --build-id.])
5001 AC_ARG_ENABLE(linker-build-id,
5002 [AS_HELP_STRING([--enable-linker-build-id],
5003 [compiler will always pass --build-id to linker])],
5005 enable_linker_build_id=no)
5007 if test x"$enable_linker_build_id" = xyes; then
5008 if test x"$gcc_cv_ld_buildid" = xyes; then
5009 AC_DEFINE(ENABLE_LD_BUILDID, 1,
5010 [Define if gcc should always pass --build-id to linker.])
5012 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5016 # In binutils 2.21, GNU ld gained support for new emulations fully
5017 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
5018 AC_CACHE_CHECK(linker *_sol2 emulation support,
5019 gcc_cv_ld_sol2_emulation,
5020 [gcc_cv_ld_sol2_emulation=no
5021 if test $in_tree_ld = yes ; then
5022 if test "$gcc_cv_gld_major_version" -eq 2 -a \
5023 "$gcc_cv_gld_minor_version" -ge 21 -o \
5024 "$gcc_cv_gld_major_version" -gt 2 \
5025 && test $in_tree_ld_is_elf = yes; then
5026 gcc_cv_ld_sol2_emulation=yes
5028 elif test x$gcc_cv_ld != x; then
5029 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5030 grep _sol2 > /dev/null; then
5031 gcc_cv_ld_sol2_emulation=yes
5034 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5035 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5036 [Define if your linker supports the *_sol2 emulations.])
5039 AC_CACHE_CHECK(linker --sysroot support,
5041 [gcc_cv_ld_sysroot=no
5042 if test $in_tree_ld = yes ; then
5043 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5044 gcc_cv_ld_sysroot=yes
5046 elif test x$gcc_cv_ld != x; then
5047 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5048 gcc_cv_ld_sysroot=yes
5051 if test x"$gcc_cv_ld_sysroot" = xyes; then
5052 AC_DEFINE(HAVE_LD_SYSROOT, 1,
5053 [Define if your linker supports --sysroot.])
5056 # Test for stack protector support in target C library.
5057 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5058 gcc_cv_libc_provides_ssp,
5059 [gcc_cv_libc_provides_ssp=no
5061 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5062 # glibc 2.4 and later provides __stack_chk_fail and
5063 # either __stack_chk_guard, or TLS access to stack guard canary.
5064 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5065 [if test -f $target_header_dir/features.h \
5066 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
5067 $target_header_dir/features.h > /dev/null; then
5068 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
5069 $target_header_dir/features.h > /dev/null && \
5070 test -f $target_header_dir/bits/uClibc_config.h && \
5071 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
5072 $target_header_dir/bits/uClibc_config.h > /dev/null; then
5073 gcc_cv_libc_provides_ssp=yes
5075 # all versions of Bionic support stack protector
5076 elif test -f $target_header_dir/sys/cdefs.h \
5077 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
5078 $target_header_dir/sys/cdefs.h > /dev/null; then
5079 gcc_cv_libc_provides_ssp=yes
5083 # Avoid complicated tests (see
5084 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5085 # simply assert that glibc does provide this, which is true for all
5086 # realistically usable GNU/Hurd configurations.
5087 gcc_cv_libc_provides_ssp=yes;;
5088 *-*-darwin* | *-*-freebsd*)
5089 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5090 [echo "no __stack_chk_fail on this target"])
5092 *) gcc_cv_libc_provides_ssp=no ;;
5095 if test x$gcc_cv_libc_provides_ssp = xyes; then
5096 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5097 [Define if your target C library provides stack protector support])
5100 # Test for <sys/sdt.h> on the target.
5101 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5102 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5104 if test -f $target_header_dir/sys/sdt.h; then
5106 AC_DEFINE(HAVE_SYS_SDT_H, 1,
5107 [Define if your target C library provides sys/sdt.h])
5109 AC_MSG_RESULT($have_sys_sdt_h)
5111 # Check if TFmode long double should be used by default or not.
5112 # Some glibc targets used DFmode long double, but with glibc 2.4
5113 # and later they can use TFmode.
5115 powerpc*-*-linux* | \
5119 AC_ARG_WITH(long-double-128,
5120 [AS_HELP_STRING([--with-long-double-128],
5121 [use 128-bit long double by default])],
5122 gcc_cv_target_ldbl128="$with_long_double_128",
5123 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5124 [gcc_cv_target_ldbl128=no
5125 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5126 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5127 && gcc_cv_target_ldbl128=yes
5131 if test x$gcc_cv_target_ldbl128 = xyes; then
5132 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5133 [Define if TFmode long double should be the default])
5136 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5137 gcc_cv_target_dl_iterate_phdr=unknown
5139 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5140 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5141 # libdl there, both complicating its use and breaking compatibility
5142 # between Solaris 10 updates.
5143 *-*-solaris2.1[[1-9]]*)
5144 # <link.h> needs both a dl_iterate_phdr declaration and support for
5145 # compilation with largefile support.
5146 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5147 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5148 gcc_cv_target_dl_iterate_phdr=yes
5150 gcc_cv_target_dl_iterate_phdr=no
5153 *-*-dragonfly* | *-*-freebsd*)
5154 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5155 gcc_cv_target_dl_iterate_phdr=yes
5157 gcc_cv_target_dl_iterate_phdr=no
5161 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5162 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5163 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5164 [Define if your target C library provides the `dl_iterate_phdr' function.])
5166 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5168 # We no longer support different GC mechanisms. Emit an error if
5169 # the user configures with --with-gc.
5171 [AS_HELP_STRING([--with-gc={page,zone}],
5172 [this option is not supported anymore. It used to choose
5173 the garbage collection mechanism to use with the compiler])],
5174 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5177 # Libraries to use on the host. This will normally be set by the top
5178 # level Makefile. Here we simply capture the value for our Makefile.
5179 if test -z "${HOST_LIBS+set}"; then
5184 # Use the system's zlib library.
5186 zlibinc="-I\$(srcdir)/../zlib"
5187 AC_ARG_WITH(system-zlib,
5188 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5195 dnl Very limited version of automake's enable-maintainer-mode
5197 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5198 dnl maintainer-mode is disabled by default
5199 AC_ARG_ENABLE(maintainer-mode,
5200 [AS_HELP_STRING([--enable-maintainer-mode],
5201 [enable make rules and dependencies not useful
5202 (and sometimes confusing) to the casual installer])],
5203 maintainer_mode=$enableval,
5206 AC_MSG_RESULT($maintainer_mode)
5208 if test "$maintainer_mode" = "yes"; then
5215 dnl Whether to prevent multiple front-ends from linking at the same time
5217 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5218 AC_ARG_ENABLE(link-mutex,
5219 [AS_HELP_STRING([--enable-link-mutex],
5220 [avoid linking multiple front-ends at once to avoid thrashing
5221 on the build machine])],
5222 do_link_mutex=$enableval,
5224 AC_MSG_RESULT($do_link_mutex)
5226 if test "$do_link_mutex" = "yes"; then
5231 AC_SUBST(DO_LINK_MUTEX)
5237 # Make empty files to contain the specs and options for each language.
5238 # Then add #include lines to for a compiler that has specs and/or options.
5244 # These (without "all_") are set in each config-lang.in.
5245 # `language' must be a single word so is spelled singularly.
5248 all_outputs='Makefile'
5249 # List of language makefile fragments.
5251 # Additional files for gengtype
5252 all_gtfiles="$target_gtfiles"
5254 # These are the languages that are set in --enable-languages,
5255 # and are available in the GCC tree.
5256 all_selected_languages=
5258 # Add the language fragments.
5259 # Languages are added via two mechanisms. Some information must be
5260 # recorded in makefile variables, these are defined in config-lang.in.
5261 # We accumulate them and plug them into the main Makefile.
5262 # The other mechanism is a set of hooks for each of the main targets
5263 # like `clean', `install', etc.
5265 language_hooks="Make-hooks"
5267 for lang in ${srcdir}/*/config-lang.in
5270 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5272 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5273 if test "x$lang_alias" = x
5275 echo "$lang doesn't set \$language." 1>&2
5278 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5279 subdirs="$subdirs $subdir"
5281 # $gcc_subdir is where the gcc integration files are to be found
5282 # for a language, both for internal compiler purposes (compiler
5283 # sources implementing front-end to GCC tree converters), and for
5284 # build infrastructure purposes (Make-lang.in, etc.)
5286 # This will be <subdir> (relative to $srcdir) if a line like
5287 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5288 # is found in <langdir>/config-lang.in, and will remain <langdir>
5291 # Except for the language alias (fetched above), the regular
5292 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5293 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5294 # only this and the language alias.
5296 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5297 if [ "$gcc_subdir" = "" ]; then
5298 gcc_subdir="$subdir"
5301 case ",$enable_languages," in
5303 all_selected_languages="$all_selected_languages $lang_alias"
5304 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5305 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5317 . ${srcdir}/$gcc_subdir/config-lang.in
5318 if test "x$language" = x
5320 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5325 case ",$enable_languages," in
5328 for i in $subdir_requires; do
5329 test -f "${srcdir}/$i/config-lang.in" && continue
5337 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5338 if test -f $srcdir/$gcc_subdir/lang.opt; then
5339 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5340 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5342 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5343 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5345 all_languages="$all_languages $language"
5346 all_compilers="$all_compilers $compilers"
5347 all_outputs="$all_outputs $outputs"
5348 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5349 case ",$enable_languages," in
5351 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5353 AC_SUBST(enable_lto)
5360 for language in $all_selected_languages
5362 check_languages="$check_languages check-$language"
5365 # We link each language in with a set of hooks, reached indirectly via
5366 # lang.${target}. Only do so for selected languages.
5370 target_list="all.cross start.encap rest.encap tags \
5371 install-common install-man install-info install-pdf install-html dvi \
5372 pdf html uninstall info man srcextra srcman srcinfo \
5373 mostlyclean clean distclean maintainer-clean install-plugin"
5375 for t in $target_list
5378 for lang in $all_selected_languages
5382 echo "lang.$t: $x" >> Make-hooks
5386 # Option include files
5389 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5390 option_includes="option-includes.mk"
5391 AC_SUBST_FILE(option_includes)
5399 echo "dir ." > .gdbinit
5400 echo "dir ${srcdir}" >> .gdbinit
5401 if test x$gdb_needs_out_file_path = xyes
5403 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5405 if test "x$subdirs" != x; then
5408 echo "dir ${srcdir}/$s" >> .gdbinit
5411 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5412 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5414 # Put a breakpoint on __asan_report_error to help with debugging buffer
5417 *-fsanitize=address*)
5418 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5422 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5423 AC_SUBST(gcc_tooldir)
5426 # Find a directory in which to install a shared libgcc.
5428 AC_ARG_ENABLE(version-specific-runtime-libs,
5429 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5430 [specify that runtime libraries should be
5431 installed in a compiler-specific directory])])
5433 # Substitute configuration variables
5436 AC_SUBST(all_compilers)
5437 AC_SUBST(all_gtfiles)
5438 AC_SUBST(all_lang_makefrags)
5439 AC_SUBST(all_languages)
5440 AC_SUBST(all_selected_languages)
5441 AC_SUBST(build_exeext)
5442 AC_SUBST(build_install_headers_dir)
5443 AC_SUBST(build_xm_file_list)
5444 AC_SUBST(build_xm_include_list)
5445 AC_SUBST(build_xm_defines)
5446 AC_SUBST(build_file_translate)
5447 AC_SUBST(check_languages)
5448 AC_SUBST(cpp_install_dir)
5449 AC_SUBST(xmake_file)
5450 AC_SUBST(tmake_file)
5451 AC_SUBST(TM_ENDIAN_CONFIG)
5452 AC_SUBST(TM_MULTILIB_CONFIG)
5453 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5454 AC_SUBST(extra_gcc_objs)
5455 AC_SUBST(user_headers_inc_next_pre)
5456 AC_SUBST(user_headers_inc_next_post)
5457 AC_SUBST(extra_headers_list)
5458 AC_SUBST(extra_objs)
5459 AC_SUBST(extra_programs)
5460 AC_SUBST(float_h_file)
5461 AC_SUBST(gcc_config_arguments)
5462 AC_SUBST(gcc_gxx_include_dir)
5463 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5464 AC_SUBST(host_exeext)
5465 AC_SUBST(host_xm_file_list)
5466 AC_SUBST(host_xm_include_list)
5467 AC_SUBST(host_xm_defines)
5468 AC_SUBST(out_host_hook_obj)
5470 AC_SUBST(lang_opt_files)
5471 AC_SUBST(lang_specs_files)
5472 AC_SUBST(lang_tree_files)
5473 AC_SUBST(local_prefix)
5475 AC_SUBST(objc_boehm_gc)
5477 AC_SUBST(out_object_file)
5478 AC_SUBST(common_out_file)
5479 AC_SUBST(common_out_object_file)
5480 AC_SUBST(tm_file_list)
5481 AC_SUBST(tm_include_list)
5482 AC_SUBST(tm_defines)
5483 AC_SUBST(tm_p_file_list)
5484 AC_SUBST(tm_p_include_list)
5485 AC_SUBST(xm_file_list)
5486 AC_SUBST(xm_include_list)
5487 AC_SUBST(xm_defines)
5488 AC_SUBST(use_gcc_stdint)
5489 AC_SUBST(c_target_objs)
5490 AC_SUBST(cxx_target_objs)
5491 AC_SUBST(fortran_target_objs)
5492 AC_SUBST(target_cpu_default)
5494 AC_SUBST_FILE(language_hooks)
5497 if test x${build} = x${host} ; then
5498 if test x${host} = x${target} ; then
5499 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5501 echo "Links are now set up to build a cross-compiler" 1>&2
5502 echo " from ${host} to ${target}." 1>&2
5505 if test x${host} = x${target} ; then
5506 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5507 echo " for ${target}." 1>&2
5509 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5510 echo " from ${host} to ${target}." 1>&2
5514 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5515 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5517 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5518 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5520 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5521 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5522 if test "x${CLOOGLIBS}" != "x" ; then
5523 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5526 # Check for plugin support
5527 AC_ARG_ENABLE(plugin,
5528 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5529 enable_plugin=$enableval,
5530 enable_plugin=yes; default_plugin=yes)
5536 if test x$build = x$host; then
5537 export_sym_check="nm${exeext} -g"
5538 elif test x$host = x$target; then
5539 export_sym_check="$gcc_cv_nm -g"
5545 if test x$build = x$host; then
5546 export_sym_check="objdump${exeext} -T"
5547 elif test x$host = x$target; then
5548 export_sym_check="$gcc_cv_objdump -T"
5555 if test x"$enable_plugin" = x"yes"; then
5557 AC_MSG_CHECKING([for exported symbols])
5558 if test "x$export_sym_check" != x; then
5559 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5560 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5561 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5562 : # No need to use a flag
5563 AC_MSG_RESULT([yes])
5565 AC_MSG_RESULT([yes])
5566 AC_MSG_CHECKING([for -rdynamic])
5567 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5568 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5570 pluginlibs="-rdynamic"
5575 AC_MSG_RESULT([$plugin_rdynamic])
5578 AC_MSG_RESULT([unable to check])
5583 AC_SEARCH_LIBS([dlopen], [dl])
5584 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5585 pluginlibs="$pluginlibs -ldl"
5589 # Check that we can build shared objects with -fPIC -shared
5590 saved_LDFLAGS="$LDFLAGS"
5591 saved_CFLAGS="$CFLAGS"
5594 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5595 CFLAGS="$CFLAGS -fPIC"
5596 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5599 CFLAGS="$CFLAGS -fPIC"
5600 LDFLAGS="$LDFLAGS -fPIC -shared"
5603 AC_MSG_CHECKING([for -fPIC -shared])
5605 [extern int X;],[return X == 0;],
5606 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5607 [AC_MSG_RESULT([no]); have_pic_shared=no])
5608 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5612 LDFLAGS="$saved_LDFLAGS"
5613 CFLAGS="$saved_CFLAGS"
5615 # If plugin support had been requested but not available, fail.
5616 if test x"$enable_plugin" = x"no" ; then
5617 if test x"$default_plugin" != x"yes"; then
5619 Building GCC with plugin support requires a host that supports
5620 -fPIC, -shared, -ldl and -rdynamic.])
5625 AC_SUBST(pluginlibs)
5626 AC_SUBST(enable_plugin)
5627 if test x"$enable_plugin" = x"yes"; then
5628 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5632 # Enable --enable-host-shared
5633 AC_ARG_ENABLE(host-shared,
5634 [AS_HELP_STRING([--enable-host-shared],
5635 [build host code as shared libraries])],
5636 [PICFLAG=-fPIC], [PICFLAG=])
5637 AC_SUBST(enable_host_shared)
5641 AC_ARG_ENABLE(libquadmath-support,
5642 [AS_HELP_STRING([--disable-libquadmath-support],
5643 [disable libquadmath support for Fortran])],
5644 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5645 ENABLE_LIBQUADMATH_SUPPORT=yes)
5646 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5647 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5648 [Define to 1 to enable libquadmath support])
5652 # Specify what hash style to use by default.
5653 AC_ARG_WITH([linker-hash-style],
5654 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5655 [specify the linker hash style])],
5656 [case x"$withval" in
5658 LINKER_HASH_STYLE=sysv
5661 LINKER_HASH_STYLE=gnu
5664 LINKER_HASH_STYLE=both
5667 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5670 [LINKER_HASH_STYLE=''])
5671 if test x"${LINKER_HASH_STYLE}" != x; then
5672 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5673 [The linker hash style])
5676 # Configure the subdirectories
5677 # AC_CONFIG_SUBDIRS($subdirs)
5679 # Create the Makefile
5680 # and configure language subdirectories
5681 AC_CONFIG_FILES($all_outputs)
5683 AC_CONFIG_COMMANDS([default],
5685 case ${CONFIG_HEADERS} in
5686 *auto-host.h:config.in*)
5689 # Make sure all the subdirs exist.
5690 for d in $subdirs doc build common c-family
5692 test -d $d || mkdir $d
5695 [subdirs='$subdirs'])