2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
282 ACX_PROG_GNAT([-I"$srcdir"/ada])
284 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
285 # optimizations to be activated explicitly by the toplevel.
288 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
289 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
294 # Determine PICFLAG for target gnatlib.
295 GCC_PICFLAG_FOR_TARGET
296 AC_SUBST(PICFLAG_FOR_TARGET)
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
308 # sizeof(char) is 1 by definition.
309 AC_CHECK_SIZEOF(void *)
310 AC_CHECK_SIZEOF(short)
312 AC_CHECK_SIZEOF(long)
313 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
314 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
317 # ---------------------
318 # Warnings and checking
319 # ---------------------
321 # Check $CC warning features (if it's GCC).
322 # We want to use -pedantic, but we don't want warnings about
326 # * C++11 narrowing conversions in { }
327 # So, we only use -pedantic if we can disable those warnings.
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
331 ACX_PROG_CC_WARNING_OPTS(
332 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
338 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
339 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
340 [-Wno-overlength-strings])), [strict_warn])
341 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
343 # The above macros do nothing if the compiler is not GCC. However, the
344 # Makefile has more goo to add other flags, so these variables are used
345 # to enable warnings only for GCC.
348 if test "x$GCC" = "xyes"; then
349 warn_cflags='$(GCC_WARN_CFLAGS)'
350 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
352 AC_SUBST(warn_cflags)
353 AC_SUBST(warn_cxxflags)
355 # Disable exceptions and RTTI if building with g++
356 ACX_PROG_CC_WARNING_OPTS(
357 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
360 # Enable expensive internal checks
362 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
366 AC_ARG_ENABLE(checking,
367 [AS_HELP_STRING([[--enable-checking[=LIST]]],
368 [enable expensive run-time checks. With LIST,
369 enable only specific categories of checks.
370 Categories are: yes,no,all,none,release.
371 Flags are: assert,df,fold,gc,gcac,gimple,misc,
372 rtlflag,rtl,runtime,tree,valgrind,types])],
373 [ac_checking_flags="${enableval}"],[
374 # Determine the default checks.
375 if test x$is_release = x ; then
376 ac_checking_flags=yes
378 ac_checking_flags=release
380 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
381 for check in release $ac_checking_flags
384 # these set all the flags to specific states
385 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
386 ac_fold_checking= ; ac_gc_checking=1 ;
387 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
388 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
389 ac_tree_checking=1 ; ac_valgrind_checking= ;
390 ac_types_checking=1 ;;
391 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
392 ac_fold_checking= ; ac_gc_checking= ;
393 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
394 ac_rtlflag_checking= ; ac_runtime_checking= ;
395 ac_tree_checking= ; ac_valgrind_checking= ;
396 ac_types_checking= ;;
397 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
398 ac_fold_checking=1 ; ac_gc_checking=1 ;
399 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
400 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
401 ac_tree_checking=1 ; ac_valgrind_checking= ;
402 ac_types_checking=1 ;;
403 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
404 ac_fold_checking= ; ac_gc_checking= ;
405 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
406 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
407 ac_tree_checking= ; ac_valgrind_checking= ;
408 ac_types_checking= ;;
409 # these enable particular checks
410 assert) ac_assert_checking=1 ;;
411 df) ac_df_checking=1 ;;
412 fold) ac_fold_checking=1 ;;
413 gc) ac_gc_checking=1 ;;
414 gcac) ac_gc_always_collect=1 ;;
415 gimple) ac_gimple_checking=1 ;;
416 misc) ac_checking=1 ;;
417 rtl) ac_rtl_checking=1 ;;
418 rtlflag) ac_rtlflag_checking=1 ;;
419 runtime) ac_runtime_checking=1 ;;
420 tree) ac_tree_checking=1 ;;
421 types) ac_types_checking=1 ;;
422 valgrind) ac_valgrind_checking=1 ;;
423 *) AC_MSG_ERROR(unknown check category $check) ;;
429 if test x$ac_checking != x ; then
430 AC_DEFINE(ENABLE_CHECKING, 1,
431 [Define if you want more run-time sanity checks. This one gets a grab
432 bag of miscellaneous but relatively cheap checks.])
433 nocommon_flag=-fno-common
435 AC_SUBST(nocommon_flag)
436 if test x$ac_df_checking != x ; then
437 AC_DEFINE(ENABLE_DF_CHECKING, 1,
438 [Define if you want more run-time sanity checks for dataflow.])
440 if test x$ac_assert_checking != x ; then
441 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
442 [Define if you want assertions enabled. This is a cheap check.])
444 if test x$ac_gimple_checking != x ; then
445 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
446 [Define if you want operations on GIMPLE (the basic data structure of
447 the high-level optimizers) to be checked for dynamic type safety at
448 runtime. This is moderately expensive.])
450 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
451 if test x$ac_runtime_checking != x ; then
452 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
453 [Define if you want runtime assertions enabled. This is a cheap check.])
455 if test x$ac_tree_checking != x ; then
456 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
457 [Define if you want all operations on trees (the basic data
458 structure of the front ends) to be checked for dynamic type safety
459 at runtime. This is moderately expensive. The tree browser debugging
460 routines will also be enabled by this option.
462 TREEBROWSER=tree-browser.o
465 if test x$ac_types_checking != x ; then
466 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
467 [Define if you want all gimple types to be verified after gimplifiation.
471 AC_SUBST(TREEBROWSER)
472 AC_SUBST(TREECHECKING)
473 if test x$ac_rtl_checking != x ; then
474 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
475 [Define if you want all operations on RTL (the basic data structure
476 of the optimizer and back end) to be checked for dynamic type safety
477 at runtime. This is quite expensive.])
479 if test x$ac_rtlflag_checking != x ; then
480 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
481 [Define if you want RTL flag accesses to be checked against the RTL
482 codes that are supported for each access macro. This is relatively
485 if test x$ac_gc_checking != x ; then
486 AC_DEFINE(ENABLE_GC_CHECKING, 1,
487 [Define if you want the garbage collector to do object poisoning and
488 other memory allocation checks. This is quite expensive.])
490 if test x$ac_gc_always_collect != x ; then
491 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
492 [Define if you want the garbage collector to operate in maximally
493 paranoid mode, validating the entire heap and collecting garbage at
494 every opportunity. This is extremely expensive.])
496 if test x$ac_fold_checking != x ; then
497 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
498 [Define if you want fold checked that it never destructs its argument.
499 This is quite expensive.])
501 valgrind_path_defines=
504 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
505 dnl # an if statement. This was the source of very frustrating bugs
506 dnl # in converting to autoconf 2.5x!
507 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
509 if test x$ac_valgrind_checking != x ; then
510 # It is certainly possible that there's valgrind but no valgrind.h.
511 # GCC relies on making annotations so we must have both.
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <valgrind/memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_valgrind_memcheck_h=yes],
519 [gcc_cv_header_valgrind_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
521 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
522 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
523 [[#include <memcheck.h>
524 #ifndef VALGRIND_DISCARD
525 #error VALGRIND_DISCARD not defined
527 [gcc_cv_header_memcheck_h=yes],
528 [gcc_cv_header_memcheck_h=no])
529 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
530 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
531 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
532 if test "x$valgrind_path" = "x" \
533 || (test $have_valgrind_h = no \
534 && test $gcc_cv_header_memcheck_h = no \
535 && test $gcc_cv_header_valgrind_memcheck_h = no); then
536 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
538 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
539 valgrind_command="$valgrind_path -q"
540 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
541 [Define if you want to run subprograms and generated programs
542 through valgrind (a memory checker). This is extremely expensive.])
543 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
544 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
545 [Define if valgrind's valgrind/memcheck.h header is installed.])
547 if test $gcc_cv_header_memcheck_h = yes; then
548 AC_DEFINE(HAVE_MEMCHECK_H, 1,
549 [Define if valgrind's memcheck.h header is installed.])
552 AC_SUBST(valgrind_path_defines)
553 AC_SUBST(valgrind_command)
555 # Enable code coverage collection
556 AC_ARG_ENABLE(coverage,
557 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
558 [enable compiler's code coverage collection.
559 Use to measure compiler performance and locate
560 unused parts of the compiler. With LEVEL, specify
561 optimization. Values are opt, noopt,
563 [case "${enableval}" in
565 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
568 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
571 # a.k.a. --disable-coverage
575 AC_MSG_ERROR(unknown coverage setting $enableval)
579 AC_SUBST(coverage_flags)
581 AC_ARG_ENABLE(gather-detailed-mem-stats,
582 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
583 [enable detailed memory allocation stats gathering])], [],
584 [enable_gather_detailed_mem_stats=no])
585 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
586 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
587 [Define to enable detailed memory allocation stats gathering.])
589 # -------------------------------
590 # Miscenalleous configure options
591 # -------------------------------
595 [AS_HELP_STRING([--with-stabs],
596 [arrange to use stabs instead of host debug format])],
600 # Determine whether or not multilibs are enabled.
601 AC_ARG_ENABLE(multilib,
602 [AS_HELP_STRING([--enable-multilib],
603 [enable library support for multiple ABIs])],
604 [], [enable_multilib=yes])
605 AC_SUBST(enable_multilib)
607 # Determine whether or not multiarch is enabled.
608 AC_ARG_ENABLE(multiarch,
609 [AS_HELP_STRING([--enable-multiarch],
610 [enable support for multiarch paths])],
611 [case "${enableval}" in
612 yes|no|auto) enable_multiarch=$enableval;;
613 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
614 esac], [enable_multiarch=auto])
615 if test x${enable_multiarch} = xauto; then
616 if test x${with_native_system_header_dir} != x; then
617 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
620 if test x$host != x$target && test "x$with_sysroot" = x; then
621 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
625 AC_MSG_CHECKING(for multiarch configuration)
626 AC_SUBST(enable_multiarch)
627 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
629 # needed for setting the multiarch name for soft-float/hard-float ABIs
633 # Enable __cxa_atexit for C++.
634 AC_ARG_ENABLE(__cxa_atexit,
635 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
638 # Enable C extension for decimal float if target supports it.
639 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
641 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
642 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
643 [Define to 1 to enable decimal float extension to C.])
645 # Use default_decimal_float for dependency.
646 enable_decimal_float=$default_decimal_float
648 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
649 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
650 [Define to 1 to specify that we are using the BID decimal floating
651 point format instead of DPD])
653 # Enable C extension for fixed-point arithmetic.
654 AC_ARG_ENABLE(fixed-point,
655 [AS_HELP_STRING([--enable-fixed-point],
656 [enable fixed-point arithmetic extension to C])],
661 enable_fixed_point=yes
665 enable_fixed_point=yes
668 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
669 enable_fixed_point=no
673 AC_SUBST(enable_fixed_point)
675 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
676 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
677 [Define to 1 to enable fixed-point arithmetic extension to C.])
680 # Pass with no value to take the default
681 # Pass with a value to specify a thread package
682 AC_ARG_ENABLE(threads,
683 [AS_HELP_STRING([[--enable-threads[=LIB]]],
684 [enable thread usage for target GCC,
685 using LIB thread package])],,
689 [AS_HELP_STRING([--enable-tls],
690 [enable or disable generation of tls code
691 overriding the assembler check for tls support])],
695 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
696 Valid choices are 'yes' and 'no'.]) ;;
700 AC_ARG_ENABLE(objc-gc,
701 [AS_HELP_STRING([--enable-objc-gc],
702 [enable the use of Boehm's garbage collector with
703 the GNU Objective-C runtime])],
704 if test x$enable_objc_gc = xno; then
712 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
713 dwarf2="$with_dwarf2",
716 AC_ARG_ENABLE(shared,
717 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
719 case $enable_shared in
723 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
724 for pkg in $enableval; do
725 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
732 ], [enable_shared=yes])
733 AC_SUBST(enable_shared)
735 AC_ARG_WITH([native-system-header-dir],
736 [ --with-native-system-header-dir=dir
737 use dir as the directory to look for standard
738 system header files in. Defaults to /usr/include.],
740 case ${with_native_system_header_dir} in
741 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
742 /* | [[A-Za-z]]:[[\\/]]*) ;;
743 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
745 configured_native_system_header_dir="${withval}"
746 ], [configured_native_system_header_dir=])
748 AC_ARG_WITH(build-sysroot,
749 [AS_HELP_STRING([--with-build-sysroot=sysroot],
750 [use sysroot as the system root during the build])],
751 [if test x"$withval" != x ; then
752 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
754 [SYSROOT_CFLAGS_FOR_TARGET=])
755 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
757 if test "x$prefix" = xNONE; then
758 test_prefix=/usr/local
762 if test "x$exec_prefix" = xNONE; then
763 test_exec_prefix=$test_prefix
765 test_exec_prefix=$exec_prefix
769 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
770 [search for usr/lib, usr/include, et al, within DIR])],
772 case ${with_sysroot} in
773 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
774 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
777 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
778 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
780 case ${TARGET_SYSTEM_ROOT} in
781 "${test_prefix}"|"${test_prefix}/"*|\
782 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
783 '${prefix}'|'${prefix}/'*|\
784 '${exec_prefix}'|'${exec_prefix}/'*)
785 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
786 TARGET_SYSTEM_ROOT_DEFINE="$t"
791 TARGET_SYSTEM_ROOT_DEFINE=
792 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
794 AC_SUBST(TARGET_SYSTEM_ROOT)
795 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
796 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
799 [AS_HELP_STRING([--with-specs=SPECS],
800 [add SPECS to driver command-line processing])],
801 [CONFIGURE_SPECS=$withval],
804 AC_SUBST(CONFIGURE_SPECS)
806 ACX_PKGVERSION([GCC])
807 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
809 # Sanity check enable_languages in case someone does not run the toplevel
810 # configure # script.
811 AC_ARG_ENABLE(languages,
812 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
813 [case ,${enable_languages}, in
815 # go safe -- we cannot be much sure without the toplevel
817 # analysis of which target libs are present and usable
821 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
826 enable_languages=c,${enable_languages}
829 [enable_languages=c])
831 AC_ARG_WITH(multilib-list,
832 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
834 with_multilib_list=default)
836 # -------------------------
837 # Checks for other programs
838 # -------------------------
842 # Find some useful tools
844 # We need awk to create options.c and options.h.
845 # Bail out if it's missing.
847 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
854 AC_SUBST(ranlib_flags)
858 # See if cmp has --ignore-initial.
859 gcc_AC_PROG_CMP_IGNORE_INITIAL
861 # See if we have the mktemp command.
862 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
864 # See if makeinfo has been installed and is modern enough
865 # that we can use it.
866 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
867 [GNU texinfo.* \([0-9][0-9.]*\)],
868 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
869 if test $gcc_cv_prog_makeinfo_modern = no; then
871 *** Makeinfo is missing or too old.
872 *** Info documentation will not be built.])
879 # Is pod2man recent enough to regenerate manpages?
880 AC_MSG_CHECKING([for recent Pod::Man])
881 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
883 GENERATED_MANPAGES=generated-manpages
888 AC_SUBST(GENERATED_MANPAGES)
890 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
893 dnl Don't use AC_PROG_LEX; we insist on flex.
894 dnl LEXLIB is not useful in gcc.
895 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
898 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
900 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
901 # check for build == host before using them.
904 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
905 && test -d ../binutils ; then
906 NM='${objdir}/../binutils/nm-new'
908 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
912 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
913 && test -d ../binutils ; then
914 AR='${objdir}/../binutils/ar'
916 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
920 # --------------------
921 # Checks for C headers
922 # --------------------
924 # Need to reject headers which give warnings, so that the -Werror bootstrap
925 # works later. *sigh* This needs to come before all header checks.
933 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
934 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
935 sys/resource.h sys/param.h sys/times.h sys/stat.h \
936 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
938 # Check for thread headers.
939 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
940 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
942 # These tests can't be done till we know if we have limits.h.
946 # ----------------------
947 # Checks for C++ headers
948 # ----------------------
950 dnl Autoconf will give an error in the configure script if there is no
951 dnl C++ preprocessor. Hack to prevent that.
952 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
954 m4_popdef([AC_MSG_ERROR])[]dnl
958 AC_CHECK_HEADERS(unordered_map)
959 AC_CHECK_HEADERS(tr1/unordered_map)
960 AC_CHECK_HEADERS(ext/hash_map)
965 # Dependency checking.
970 AC_CONFIG_COMMANDS([gccdepdir],[
971 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
972 for lang in $subdirs c-family common
974 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
975 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
977 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
985 # These libraries may be used by collect2.
986 # We may need a special search path to get them linked.
987 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
989 for libs in '' -lld -lmld \
990 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
991 '-L/usr/lib/cmplrs/cc3.11 -lmld'
994 AC_TRY_LINK_FUNC(ldopen,
995 [gcc_cv_collect2_libs="$libs"; break])
998 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
999 case $gcc_cv_collect2_libs in
1001 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1003 AC_SUBST(COLLECT2_LIBS)
1005 # When building Ada code on Alpha, we need exc_resume which is usually in
1006 # -lexc. So test for it.
1009 AC_SEARCH_LIBS(exc_resume, exc)
1012 AC_SUBST(GNAT_LIBEXC)
1014 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1017 AC_SEARCH_LIBS(kstat_open, kstat)
1018 EXTRA_GCC_LIBS="$LIBS"
1020 AC_SUBST(EXTRA_GCC_LIBS)
1022 # Some systems put ldexp and frexp in libm instead of libc; assume
1023 # they're both in the same place. jcf-dump needs them.
1026 AC_SEARCH_LIBS(ldexp, m)
1031 # Use <inttypes.h> only if it exists,
1032 # doesn't clash with <sys/types.h>, and declares intmax_t.
1033 AC_MSG_CHECKING(for inttypes.h)
1034 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1035 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1036 [[#include <sys/types.h>
1037 #include <inttypes.h>]],
1038 [[intmax_t i = -1;]])],
1039 [gcc_cv_header_inttypes_h=yes],
1040 [gcc_cv_header_inttypes_h=no])])
1041 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1042 if test $gcc_cv_header_inttypes_h = yes; then
1043 AC_DEFINE(HAVE_INTTYPES_H, 1,
1044 [Define if you have a working <inttypes.h> header file.])
1047 dnl Disabled until we have a complete test for buggy enum bitfields.
1048 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1050 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1051 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1052 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1053 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1054 putchar_unlocked putc_unlocked)
1055 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1056 sysconf strsignal getrusage nl_langinfo \
1057 gettimeofday mbstowcs wcswidth mmap setlocale \
1058 gcc_UNLOCKED_FUNCS madvise)
1060 if test x$ac_cv_func_mbstowcs = xyes; then
1061 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1062 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1068 [gcc_cv_func_mbstowcs_works=yes],
1069 [gcc_cv_func_mbstowcs_works=no],
1070 [gcc_cv_func_mbstowcs_works=yes])])
1071 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1072 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1073 [Define this macro if mbstowcs does not crash when its
1074 first argument is NULL.])
1078 AC_CHECK_TYPE(ssize_t, int)
1079 AC_CHECK_TYPE(caddr_t, char *)
1081 GCC_AC_FUNC_MMAP_BLACKLIST
1085 # Under VMS, vfork works very differently than on Unix. The standard test
1086 # won't work, and it isn't easily adaptable. It makes more sense to
1088 ac_cv_func_vfork_works=yes
1093 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1094 # iconv() prototype.
1099 # Until we have in-tree GNU iconv:
1101 AC_SUBST(LIBICONV_DEP)
1107 # We will need to find libiberty.h and ansidecl.h
1108 saved_CFLAGS="$CFLAGS"
1109 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1110 saved_CXXFLAGS="$CXXFLAGS"
1111 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1112 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1113 strsignal strstr stpcpy strverscmp \
1114 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1115 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1116 #include "ansidecl.h"
1117 #include "system.h"])
1119 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1120 #include "ansidecl.h"
1122 #ifdef HAVE_SYS_RESOURCE_H
1123 #include <sys/resource.h>
1127 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1128 #include "ansidecl.h"
1130 #ifdef HAVE_SYS_RESOURCE_H
1131 #include <sys/resource.h>
1133 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1134 [Define to `long' if <sys/resource.h> doesn't define.])])
1136 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1137 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1138 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1139 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1140 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1141 #include "ansidecl.h"
1150 gcc_AC_CHECK_DECLS(times, , ,[
1151 #include "ansidecl.h"
1153 #ifdef HAVE_SYS_TIMES_H
1154 #include <sys/times.h>
1158 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1159 #include "ansidecl.h"
1164 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1167 gcc_AC_CHECK_DECLS(madvise, , ,[
1168 #include "ansidecl.h"
1173 # More time-related stuff.
1174 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1175 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1176 #include "ansidecl.h"
1178 #ifdef HAVE_SYS_TIMES_H
1179 #include <sys/times.h>
1181 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1182 if test $ac_cv_struct_tms = yes; then
1183 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1184 [Define if <sys/times.h> defines struct tms.])
1187 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1188 # revisit after autoconf 2.50.
1189 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1190 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1191 #include "ansidecl.h"
1193 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1194 if test $gcc_cv_type_clock_t = yes; then
1195 AC_DEFINE(HAVE_CLOCK_T, 1,
1196 [Define if <time.h> defines clock_t.])
1199 # Check if F_SETLKW is supported by fcntl.
1200 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1201 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1202 #include <fcntl.h>]], [[
1208 return fcntl (1, F_SETLKW, &fl);]])],
1209 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1210 if test $ac_cv_f_setlkw = yes; then
1211 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1212 [Define if F_SETLKW supported by fcntl.])
1215 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1216 CFLAGS="$saved_CFLAGS"
1217 CXXFLAGS="$saved_CXXFLAGS"
1219 # mkdir takes a single argument on some systems.
1220 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1228 # With Setjmp/Longjmp based exception handling.
1229 AC_ARG_ENABLE(sjlj-exceptions,
1230 [AS_HELP_STRING([--enable-sjlj-exceptions],
1231 [arrange to use setjmp/longjmp exception handling])],
1234 if test $enableval != yes; then
1235 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1240 force_sjlj_exceptions=yes],
1243 force_sjlj_exceptions=yes
1247 force_sjlj_exceptions=no
1250 if test $force_sjlj_exceptions = yes; then
1251 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1252 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1253 [Define 0/1 to force the choice for exception handling model.])
1256 # --------------------------------------------------------
1257 # Build, host, and target specific configuration fragments
1258 # --------------------------------------------------------
1260 # Collect build-machine-specific information.
1261 . ${srcdir}/config.build
1263 # Collect host-machine-specific information.
1264 . ${srcdir}/config.host
1268 # Collect target-machine-specific information.
1269 . ${srcdir}/config.gcc
1271 extra_objs="${host_extra_objs} ${extra_objs}"
1272 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1274 # Default the target-machine variables that were not explicitly set.
1275 if test x"$tm_file" = x
1276 then tm_file=$cpu_type/$cpu_type.h; fi
1278 if test x"$extra_headers" = x
1279 then extra_headers=; fi
1281 if test x$md_file = x
1282 then md_file=$cpu_type/$cpu_type.md; fi
1284 if test x$out_file = x
1285 then out_file=$cpu_type/$cpu_type.c; fi
1287 if test x"$tmake_file" = x
1288 then tmake_file=$cpu_type/t-$cpu_type
1291 # Support --enable-initfini-array.
1292 if test x$enable_initfini_array != xno; then
1293 tm_file="${tm_file} initfini-array.h"
1296 if test x"$dwarf2" = xyes
1297 then tm_file="$tm_file tm-dwarf2.h"
1300 # Say what files are being used for the output code and MD file.
1301 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1302 echo "Using \`$srcdir/config/$md_file' as machine description file."
1304 # If any of the xm_file variables contain nonexistent files, warn
1305 # about them and drop them.
1308 for x in $build_xm_file; do
1309 if test -f $srcdir/config/$x
1311 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1317 for x in $host_xm_file; do
1318 if test -f $srcdir/config/$x
1320 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1326 for x in $xm_file; do
1327 if test -f $srcdir/config/$x
1329 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1335 for f in $tm_file; do
1338 if test $count = ax; then
1339 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1341 echo "Using the following target machine macro files:"
1342 for f in $tm_file; do
1343 echo " $srcdir/config/$f"
1347 if test x$need_64bit_hwint = xyes; then
1348 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1349 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1352 if test x$use_long_long_for_widest_fast_int = xyes; then
1353 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1354 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1355 efficiently supported by the host hardware.])
1358 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1359 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1361 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1362 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1365 for f in $host_xm_file; do
1368 if test $count = a; then
1370 elif test $count = ax; then
1371 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1373 echo "Using the following host machine macro files:"
1374 for f in $host_xm_file; do
1375 echo " $srcdir/config/$f"
1378 echo "Using ${out_host_hook_obj} for host machine hooks."
1380 if test "$host_xm_file" != "$build_xm_file"; then
1382 for f in $build_xm_file; do
1385 if test $count = a; then
1387 elif test $count = ax; then
1388 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1390 echo "Using the following build machine macro files:"
1391 for f in $build_xm_file; do
1392 echo " $srcdir/config/$f"
1397 if test -n "$configured_native_system_header_dir"; then
1398 native_system_header_dir=$configured_native_system_header_dir
1400 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1401 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1405 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1406 gcc_cv_mcontext_underscores,
1408 #include <sys/cdefs.h>
1409 #include <sys/signal.h>
1410 #include <ucontext.h>
1411 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1413 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1414 if test $gcc_cv_mcontext_underscores = yes; then
1415 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1416 [mcontext_t fields start with __])
1425 # Check if a valid thread package
1426 case ${enable_threads} in
1429 target_thread_file='single'
1433 target_thread_file='single'
1435 aix | dce | lynx | mipssde | posix | rtems | \
1436 single | tpf | vxworks | win32)
1437 target_thread_file=${enable_threads}
1440 echo "${enable_threads} is an unknown thread package" 1>&2
1445 if test x${thread_file} = x; then
1446 # No thread file set by target-specific clauses in config.gcc,
1447 # so use file chosen by default logic above
1448 thread_file=${target_thread_file}
1456 if test x$enable___cxa_atexit = xyes || \
1457 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1458 if test x$host = x$target; then
1460 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1461 # keyed to flag_use_cxa_atexit
1469 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1470 [echo "__cxa_atexit can't be enabled on this target"])
1474 # We can't check for __cxa_atexit when building a cross, so assume
1478 if test x$use_cxa_atexit = xyes; then
1479 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1480 [Define if you want to use __cxa_atexit, rather than atexit, to
1481 register C++ destructors for local statics and global objects.
1482 This is essential for fully standards-compliant handling of
1483 destructors, but requires __cxa_atexit in libc.])
1487 # Look for a file containing extra machine modes.
1488 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1489 extra_modes_file='$(srcdir)'/config/${extra_modes}
1490 AC_SUBST(extra_modes_file)
1491 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1492 [Define to the name of a file containing a list of extra machine modes
1493 for this architecture.])
1496 # Convert extra_options into a form suitable for Makefile use.
1499 for f in $extra_options; do
1500 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1501 all_opt_files="$all_opt_files $srcdir/config/$f"
1503 AC_SUBST(extra_opt_files)
1505 # auto-host.h is the file containing items generated by autoconf and is
1506 # the first file included by config.h.
1507 # If host=build, it is correct to have bconfig include auto-host.h
1508 # as well. If host!=build, we are in error and need to do more
1509 # work to find out the build config parameters.
1510 if test x$host = x$build
1512 build_auto=auto-host.h
1514 # We create a subdir, then run autoconf in the subdir.
1515 # To prevent recursion we set host and build for the new
1516 # invocation of configure to the build for this invocation
1523 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1524 *) realsrcdir=../${srcdir};;
1526 saved_CFLAGS="${CFLAGS}"
1527 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1528 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1529 ${realsrcdir}/configure \
1530 --enable-languages=${enable_languages-all} \
1531 --target=$target_alias --host=$build_alias --build=$build_alias
1532 CFLAGS="${saved_CFLAGS}"
1534 # We just finished tests for the build machine, so rename
1535 # the file auto-build.h in the gcc directory.
1536 mv auto-host.h ../auto-build.h
1539 build_auto=auto-build.h
1541 AC_SUBST(build_subdir)
1543 tm_file="${tm_file} defaults.h"
1544 tm_p_file="${tm_p_file} tm-preds.h"
1545 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1546 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1547 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1548 # put this back in temporarily.
1549 xm_file="auto-host.h ansidecl.h ${xm_file}"
1556 # Compile in configure arguments.
1557 if test -f configargs.h ; then
1558 # Being re-configured.
1559 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1560 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1562 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1565 # Double all backslashes and backslash all quotes to turn
1566 # gcc_config_arguments into a C string.
1567 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1568 $gcc_config_arguments
1570 gcc_config_arguments_str=`cat conftest.out`
1573 cat > configargs.h <<EOF
1574 /* Generated automatically. */
1575 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1576 static const char thread_model[] = "$thread_file";
1578 static const struct {
1579 const char *name, *value;
1580 } configure_default_options[] = $configure_default_options;
1585 gcc_BASEVER=`cat $srcdir/BASE-VER`
1586 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1587 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1588 if test -f $srcdir/REVISION ; then
1589 gcc_REVISION=`cat $srcdir/REVISION`
1593 cat > plugin-version.h <<EOF
1594 #include "configargs.h"
1596 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1597 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1598 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1599 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1601 static char basever[] = "$gcc_BASEVER";
1602 static char datestamp[] = "$gcc_DATESTAMP";
1603 static char devphase[] = "$gcc_DEVPHASE";
1604 static char revision[] = "$gcc_REVISION";
1606 /* FIXME plugins: We should make the version information more precise.
1607 One way to do is to add a checksum. */
1609 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1611 configuration_arguments};
1615 # Internationalization
1616 ZW_GNU_GETTEXT_SISTER_DIR
1618 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1619 # -liconv on the link line twice.
1620 case "$LIBINTL" in *$LIBICONV*)
1624 AC_ARG_ENABLE(secureplt,
1625 [AS_HELP_STRING([--enable-secureplt],
1626 [enable -msecure-plt by default for PowerPC])],
1629 AC_ARG_ENABLE(leading-mingw64-underscores,
1630 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1631 [enable leading underscores on 64 bit mingw targets]),
1633 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1634 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1635 [Define if we should use leading underscore on 64 bit mingw targets])])
1638 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1641 AC_ARG_ENABLE(frame-pointer,
1642 [AS_HELP_STRING([--enable-frame-pointer],
1643 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1646 linux* | darwin[[8912]]*)
1647 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1649 enable_frame_pointer=no
1652 enable_frame_pointer=yes
1657 # Windows32 Registry support for specifying GCC installation paths.
1658 AC_ARG_ENABLE(win32-registry,
1659 [AS_HELP_STRING([--disable-win32-registry],
1660 [disable lookup of installation paths in the
1661 Registry on Windows hosts])
1662 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1663 AS_HELP_STRING([--enable-win32-registry=KEY],
1664 [use KEY instead of GCC version as the last portion
1665 of the registry key])],,)
1668 win32 | pe | cygwin* | mingw32* | uwin*)
1669 if test "x$enable_win32_registry" != xno; then
1670 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1673 if test "x$enable_win32_registry" != xno; then
1674 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1675 [Define to 1 if installation paths should be looked up in the Windows
1676 Registry. Ignored on non-Windows hosts.])
1678 if test "x$enable_win32_registry" != xyes \
1679 && test "x$enable_win32_registry" != x; then
1680 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1681 [Define to be the last component of the Windows registry key under which
1682 to look for installation paths. The full key used will be
1683 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1684 The default is the GCC version number.])
1690 # Get an absolute path to the GCC top-level source directory
1691 holddir=`${PWDCMD-pwd}`
1693 topdir=`${PWDCMD-pwd}`
1696 # Conditionalize the makefile for this host machine.
1698 for f in ${host_xmake_file}
1700 if test -f ${srcdir}/config/$f
1702 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1706 # Conditionalize the makefile for this target machine.
1708 for f in ${tmake_file}
1710 if test -f ${srcdir}/config/$f
1712 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1715 tmake_file="${tmake_file_}"
1717 out_object_file=`basename $out_file .c`.o
1718 common_out_object_file=`basename $common_out_file .c`.o
1720 tm_file_list="options.h"
1721 tm_include_list="options.h insn-constants.h"
1722 for f in $tm_file; do
1725 f=`echo $f | sed 's/^..//'`
1726 tm_file_list="${tm_file_list} $f"
1727 tm_include_list="${tm_include_list} $f"
1730 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1731 tm_include_list="${tm_include_list} $f"
1734 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1735 tm_include_list="${tm_include_list} config/$f"
1742 for f in $tm_p_file; do
1745 tm_p_file_list="${tm_p_file_list} $f"
1746 tm_p_include_list="${tm_p_include_list} $f"
1749 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1750 tm_p_include_list="${tm_p_include_list} config/$f"
1756 for f in $xm_file; do
1759 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1760 xm_include_list="${xm_include_list} $f"
1763 xm_file_list="${xm_file_list} $f"
1764 xm_include_list="${xm_include_list} $f"
1767 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1768 xm_include_list="${xm_include_list} config/$f"
1774 host_xm_include_list=
1775 for f in $host_xm_file; do
1778 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1779 host_xm_include_list="${host_xm_include_list} $f"
1782 host_xm_file_list="${host_xm_file_list} $f"
1783 host_xm_include_list="${host_xm_include_list} $f"
1786 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1787 host_xm_include_list="${host_xm_include_list} config/$f"
1793 for f in $build_xm_file; do
1796 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1797 build_xm_include_list="${build_xm_include_list} $f"
1799 auto-build.h | auto-host.h )
1800 build_xm_file_list="${build_xm_file_list} $f"
1801 build_xm_include_list="${build_xm_include_list} $f"
1804 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1805 build_xm_include_list="${build_xm_include_list} config/$f"
1810 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1811 # cross-compiler which does not use the native headers and libraries.
1812 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1813 CROSS= AC_SUBST(CROSS)
1814 ALL=all.internal AC_SUBST(ALL)
1815 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1817 if test "x$with_build_sysroot" != x; then
1818 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1820 # This value is used, even on a native system, because
1821 # CROSS_SYSTEM_HEADER_DIR is just
1822 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1823 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1826 if test x$host != x$target
1828 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1830 SYSTEM_HEADER_DIR=$build_system_header_dir
1831 case "$host","$target" in
1832 # Darwin crosses can use the host system's libraries and headers,
1833 # because of the fat library support. Of course, it must be the
1834 # same version of Darwin on both sides. Allow the user to
1835 # just say --target=foo-darwin without a version number to mean
1836 # "the version on this system".
1837 *-*-darwin*,*-*-darwin*)
1838 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1839 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1840 if test $hostos = $targetos -o $targetos = darwin ; then
1842 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1847 i?86-*-*,x86_64-*-* \
1848 | powerpc*-*-*,powerpc64*-*-*)
1849 CROSS="$CROSS -DNATIVE_CROSS" ;;
1854 if test "x$with_headers" = x; then
1861 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1862 SYSTEM_HEADER_DIR=$build_system_header_dir
1865 # If this is a cross-compiler that does not
1866 # have its own set of headers then define
1869 # If this is using newlib, without having the headers available now,
1870 # then define inhibit_libc in LIBGCC2_CFLAGS.
1871 # This prevents libgcc2 from containing any code which requires libc
1873 : ${inhibit_libc=false}
1874 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1875 test x$with_newlib = xyes ; } &&
1876 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1879 AC_SUBST(inhibit_libc)
1881 # When building gcc with a cross-compiler, we need to adjust things so
1882 # that the generator programs are still built with the native compiler.
1883 # Also, we cannot run fixincludes.
1885 # These are the normal (build=host) settings:
1886 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1887 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1888 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1889 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1890 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1891 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1893 # And these apply if build != host, or we are generating coverage data
1894 if test x$build != x$host || test "x$coverage_flags" != x
1896 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1897 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1900 # Expand extra_headers to include complete path.
1901 # This substitutes for lots of t-* files.
1903 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1904 for file in ${extra_headers} ; do
1905 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1908 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1909 if test x"$use_gcc_tgmath" = xyes
1910 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1913 # Define collect2 in Makefile.
1914 case $host_can_use_collect2 in
1916 *) collect2='collect2$(exeext)' ;;
1918 AC_SUBST([collect2])
1920 # Add a definition of USE_COLLECT2 if system wants one.
1921 case $use_collect2 in
1922 no) use_collect2= ;;
1925 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1926 xm_defines="${xm_defines} USE_COLLECT2"
1927 case $host_can_use_collect2 in
1929 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1935 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1936 [Define to the name of the LTO plugin DSO that must be
1937 passed to the linker's -plugin=LIB option.])
1939 # ---------------------------
1940 # Assembler & linker features
1941 # ---------------------------
1943 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1944 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1945 # However when ld-new is first executed from the build tree, libtool will
1946 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1947 # to the build tree. While doing this we need to use the previous-stage
1948 # linker, or we have an infinite loop. The presence of a shell script as
1949 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1950 # the gcc/collect-ld script. So we need to know how libtool works, or
1951 # exec-tool will fail.
1953 m4_defun([_LT_CONFIG_COMMANDS], [])
1956 AC_SUBST(enable_fast_install)
1958 # Identify the assembler which will work hand-in-glove with the newly
1959 # built GCC, so that we can examine its features. This is the assembler
1960 # which will be driven by the driver program.
1962 # If build != host, and we aren't building gas in-tree, we identify a
1963 # build->target assembler and hope that it will have the same features
1964 # as the host->target assembler we'll be using.
1965 gcc_cv_gas_major_version=
1966 gcc_cv_gas_minor_version=
1967 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1969 m4_pattern_allow([AS_FOR_TARGET])dnl
1970 AS_VAR_SET_IF(gcc_cv_as,, [
1971 if test -x "$DEFAULT_ASSEMBLER"; then
1972 gcc_cv_as="$DEFAULT_ASSEMBLER"
1973 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1974 && test -f ../gas/Makefile \
1975 && test x$build = x$host; then
1976 gcc_cv_as=../gas/as-new$build_exeext
1977 elif test -x as$build_exeext; then
1978 # Build using assembler in the current directory.
1979 gcc_cv_as=./as$build_exeext
1980 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1981 gcc_cv_as="$AS_FOR_TARGET"
1983 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1986 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1987 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1988 case "$ORIGINAL_AS_FOR_TARGET" in
1989 ./as | ./as$build_exeext) ;;
1990 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1993 AC_MSG_CHECKING(what assembler to use)
1994 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1995 # Single tree build which includes gas. We want to prefer it
1996 # over whatever linker top-level may have detected, since
1997 # we'll use what we're building after installation anyway.
1998 AC_MSG_RESULT(newly built gas)
2000 _gcc_COMPUTE_GAS_VERSION
2001 in_tree_gas_is_elf=no
2002 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2003 || (grep 'obj_format = multi' ../gas/Makefile \
2004 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2006 in_tree_gas_is_elf=yes
2009 AC_MSG_RESULT($gcc_cv_as)
2013 # Identify the linker which will work hand-in-glove with the newly
2014 # built GCC, so that we can examine its features. This is the linker
2015 # which will be driven by the driver program.
2017 # If build != host, and we aren't building gas in-tree, we identify a
2018 # build->target linker and hope that it will have the same features
2019 # as the host->target linker we'll be using.
2020 gcc_cv_gld_major_version=
2021 gcc_cv_gld_minor_version=
2022 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2023 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2025 AS_VAR_SET_IF(gcc_cv_ld,, [
2026 if test -x "$DEFAULT_LINKER"; then
2027 gcc_cv_ld="$DEFAULT_LINKER"
2028 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2029 && test -f ../ld/Makefile \
2030 && test x$build = x$host; then
2031 gcc_cv_ld=../ld/ld-new$build_exeext
2032 elif test -x collect-ld$build_exeext; then
2033 # Build using linker in the current directory.
2034 gcc_cv_ld=./collect-ld$build_exeext
2035 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2036 gcc_cv_ld="$LD_FOR_TARGET"
2038 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2041 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2042 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2043 # if the PLUGIN_LD is set ld-new, just have it as ld
2044 # as that is the installed named.
2045 if test x$PLUGIN_LD_SUFFIX = xld-new \
2046 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2049 AC_ARG_WITH(plugin-ld,
2050 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2051 [if test x"$withval" != x; then
2052 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2053 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2055 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2056 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2058 # Check to see if we are using gold instead of ld
2059 AC_MSG_CHECKING(whether we are using gold)
2061 if test x$gcc_cv_ld != x; then
2062 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2063 | grep "GNU gold" > /dev/null; then
2067 AC_MSG_RESULT($ld_is_gold)
2069 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2070 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2071 case "$ORIGINAL_LD_FOR_TARGET" in
2072 ./collect-ld | ./collect-ld$build_exeext) ;;
2073 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2076 AC_MSG_CHECKING(what linker to use)
2077 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2078 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2079 # Single tree build which includes ld. We want to prefer it
2080 # over whatever linker top-level may have detected, since
2081 # we'll use what we're building after installation anyway.
2082 AC_MSG_RESULT(newly built ld)
2084 in_tree_ld_is_elf=no
2085 if (grep 'EMUL = .*elf' ../ld/Makefile \
2086 || grep 'EMUL = .*linux' ../ld/Makefile \
2087 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2088 in_tree_ld_is_elf=yes
2089 elif test "$ld_is_gold" = yes; then
2090 in_tree_ld_is_elf=yes
2092 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
2095 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2096 if test x$gcc_cv_gld_version != x; then
2100 case $gcc_cv_gld_version in
2103 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2106 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2107 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2110 AC_MSG_RESULT($gcc_cv_ld)
2114 # Figure out what nm we will be using.
2115 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2116 AS_VAR_SET_IF(gcc_cv_nm,, [
2117 if test -f $gcc_cv_binutils_srcdir/configure.in \
2118 && test -f ../binutils/Makefile \
2119 && test x$build = x$host; then
2120 gcc_cv_nm=../binutils/nm-new$build_exeext
2121 elif test -x nm$build_exeext; then
2122 gcc_cv_nm=./nm$build_exeext
2123 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2124 gcc_cv_nm="$NM_FOR_TARGET"
2126 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2129 AC_MSG_CHECKING(what nm to use)
2130 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2131 # Single tree build which includes binutils.
2132 AC_MSG_RESULT(newly built nm)
2135 AC_MSG_RESULT($gcc_cv_nm)
2139 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2140 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2141 case "$ORIGINAL_NM_FOR_TARGET" in
2142 ./nm | ./nm$build_exeext) ;;
2143 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2147 # Figure out what objdump we will be using.
2148 AS_VAR_SET_IF(gcc_cv_objdump,, [
2149 if test -f $gcc_cv_binutils_srcdir/configure.in \
2150 && test -f ../binutils/Makefile \
2151 && test x$build = x$host; then
2152 # Single tree build which includes binutils.
2153 gcc_cv_objdump=../binutils/objdump$build_exeext
2154 elif test -x objdump$build_exeext; then
2155 gcc_cv_objdump=./objdump$build_exeext
2156 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2157 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2159 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2162 AC_MSG_CHECKING(what objdump to use)
2163 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2164 # Single tree build which includes binutils.
2165 AC_MSG_RESULT(newly built objdump)
2166 elif test x$gcc_cv_objdump = x; then
2167 AC_MSG_RESULT(not found)
2169 AC_MSG_RESULT($gcc_cv_objdump)
2172 # Figure out what readelf we will be using.
2173 AS_VAR_SET_IF(gcc_cv_readelf,, [
2174 if test -f $gcc_cv_binutils_srcdir/configure.in \
2175 && test -f ../binutils/Makefile \
2176 && test x$build = x$host; then
2177 # Single tree build which includes binutils.
2178 gcc_cv_readelf=../binutils/readelf$build_exeext
2179 elif test -x readelf$build_exeext; then
2180 gcc_cv_readelf=./readelf$build_exeext
2182 AC_PATH_PROG(gcc_cv_readelf, readelf)
2185 AC_MSG_CHECKING(what readelf to use)
2186 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2187 # Single tree build which includes binutils.
2188 AC_MSG_RESULT(newly built readelf)
2189 elif test x$gcc_cv_readelf = x; then
2190 AC_MSG_RESULT(not found)
2192 AC_MSG_RESULT($gcc_cv_readelf)
2195 # Figure out what assembler alignment features are present.
2196 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2200 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2201 [Define if your assembler supports .balign and .p2align.])])
2203 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2206 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2207 [Define if your assembler supports specifying the maximum number
2208 of bytes to skip when using the GAS .p2align command.])])
2210 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2213 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2214 [Define if your assembler supports .literal16.])])
2216 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2218 [conftest_label1: .word 0
2220 conftest_label2: .word 0
2222 [if test x$gcc_cv_nm != x; then
2223 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2224 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2225 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2227 else gcc_cv_as_subsection_m1=yes
2229 rm -f conftest.nm1 conftest.nm2
2231 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2232 [Define if your assembler supports .subsection and .subsection -1 starts
2233 emitting at the beginning of your section.])])
2235 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2238 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2240 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2242 [ .weakref foobar, barfnot],,
2243 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2245 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2248 .NSUBSPA $CODE$,COMDAT],,
2249 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2251 # .hidden needs to be supported in both the assembler and the linker,
2252 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2253 # This is irritatingly difficult to feature test for; we have to check the
2254 # date string after the version number. If we've got an in-tree
2255 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2257 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2258 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2262 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2263 # STV_HIDDEN, so disable .hidden support if so.
2265 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2266 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2267 cat > conftest.s <<EOF
2274 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2275 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2276 grep '\.hidden default' > /dev/null; then
2279 gcc_cv_as_hidden=yes
2282 # Assume bug is present if objdump is missing.
2287 gcc_cv_as_hidden=yes
2292 # Darwin as has some visibility support, though with a different syntax.
2293 gcc_cv_as_hidden=yes
2297 # gnu_indirect_function type is an extension proposed at
2298 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2299 # selection of function implementation
2300 AC_ARG_ENABLE(gnu-indirect-function,
2301 [AS_HELP_STRING([--enable-gnu-indirect-function],
2302 [enable the use of the @gnu_indirect_function to glibc systems])],
2303 [case $enable_gnu_indirect_function in
2305 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2306 Valid choices are 'yes' and 'no'.]) ;;
2308 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2310 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2311 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2312 [Define if your system supports gnu indirect functions.])
2316 if test $in_tree_ld != yes ; then
2317 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2318 if echo "$ld_ver" | grep GNU > /dev/null; then
2319 if test x"$ld_is_gold" = xyes; then
2320 # GNU gold --version looks like this:
2322 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2324 # We extract the binutils version which is more familiar and specific
2325 # than the gold version.
2326 ld_vers=`echo $ld_ver | sed -n \
2327 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2329 # GNU ld --version looks like this:
2331 # GNU ld (GNU Binutils) 2.21.51.20110225
2332 ld_vers=`echo $ld_ver | sed -n \
2333 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2335 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2336 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2337 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2338 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2342 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2345 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2346 # /usr/ccs/bin/ld has been configured.
2347 ld_ver=`$gcc_cv_ld -V 2>&1`
2348 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2349 ld_vers=`echo $ld_ver | sed -n \
2350 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2351 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2352 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2360 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2361 [[if test $in_tree_ld = yes ; then
2363 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2364 && test $in_tree_ld_is_elf = yes; then
2365 gcc_cv_ld_hidden=yes
2368 gcc_cv_ld_hidden=yes
2369 if test x"$ld_is_gold" = xyes; then
2371 elif echo "$ld_ver" | grep GNU > /dev/null; then
2373 mmix-knuth-mmixware)
2374 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2378 if test 0"$ld_date" -lt 20020404; then
2379 if test -n "$ld_date"; then
2380 # If there was date string, but was earlier than 2002-04-04, fail
2382 elif test -z "$ld_vers"; then
2383 # If there was no date string nor ld version number, something is wrong
2386 test -z "$ld_vers_patch" && ld_vers_patch=0
2387 if test "$ld_vers_major" -lt 2; then
2389 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2390 gcc_cv_ld_hidden="no"
2391 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2399 # Darwin ld has some visibility support.
2400 gcc_cv_ld_hidden=yes
2402 hppa64*-*-hpux* | ia64*-*-hpux*)
2403 gcc_cv_ld_hidden=yes
2405 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2406 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2407 # .symbolic was only added in Solaris 9 12/02.
2408 gcc_cv_ld_hidden=yes
2416 libgcc_visibility=no
2417 AC_SUBST(libgcc_visibility)
2418 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2419 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2420 libgcc_visibility=yes
2421 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2422 [Define if your assembler and linker support .hidden.])
2425 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2426 gcc_cv_ld_ro_rw_mix=unknown
2427 if test $in_tree_ld = yes ; then
2428 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2429 && test $in_tree_ld_is_elf = yes; then
2430 gcc_cv_ld_ro_rw_mix=read-write
2432 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2433 echo '.section myfoosect, "a"' > conftest1.s
2434 echo '.section myfoosect, "aw"' > conftest2.s
2435 echo '.byte 1' >> conftest2.s
2436 echo '.section myfoosect, "a"' > conftest3.s
2437 echo '.byte 0' >> conftest3.s
2438 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2439 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2440 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2441 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2442 conftest2.o conftest3.o > /dev/null 2>&1; then
2443 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2444 | sed -e '/myfoosect/!d' -e N`
2445 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2446 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2447 gcc_cv_ld_ro_rw_mix=read-only
2449 gcc_cv_ld_ro_rw_mix=read-write
2454 rm -f conftest.* conftest[123].*
2457 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2458 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2459 [Define if your linker links a mix of read-only
2460 and read-write sections into a read-write section.])
2462 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2464 gcc_AC_INITFINI_ARRAY
2466 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2467 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2475 [[# GAS versions before 2.11 do not support uleb128,
2476 # despite appearing to.
2477 # ??? There exists an elf-specific test that will crash
2478 # the assembler. Perhaps it's better to figure out whether
2479 # arbitrary sections are supported and try the test.
2480 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2481 if echo "$as_ver" | grep GNU > /dev/null; then
2482 as_vers=`echo $as_ver | sed -n \
2483 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2484 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2485 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2486 if test $as_major -eq 2 && test $as_minor -lt 11
2488 else gcc_cv_as_leb128=yes
2491 [AC_DEFINE(HAVE_AS_LEB128, 1,
2492 [Define if your assembler supports .sleb128 and .uleb128.])])
2494 # Check if we have assembler support for unwind directives.
2495 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2502 .cfi_escape 1, 2, 3, 4, 5
2506 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2507 # read-only and read-write sections, we need to make sure that the
2508 # assembler used emits read-write .eh_frame sections.
2509 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2510 if test "x$gcc_cv_objdump" != x; then
2511 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2512 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2513 gcc_cv_as_cfi_directive=no
2516 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2517 # On Solaris/x86, make sure that GCC and gas agree on using
2518 # read-only .eh_frame sections for 64-bit.
2519 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2520 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2521 sed -e /.eh_frame/!d -e N | \
2522 grep READONLY > /dev/null; then
2523 gcc_cv_as_cfi_directive=yes
2525 gcc_cv_as_cfi_directive=no
2529 gcc_cv_as_cfi_directive=yes
2534 # no objdump, err on the side of caution
2535 gcc_cv_as_cfi_directive=no
2538 gcc_cv_as_cfi_directive=yes
2542 gcc_cv_as_cfi_directive=yes
2545 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2546 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2550 .cfi_adjust_cfa_offset 64
2552 .cfi_adjust_cfa_offset 128
2555 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2556 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2557 gcc_cv_as_cfi_advance_working=yes
2561 # no objdump, err on the side of caution
2562 gcc_cv_as_cfi_advance_working=no
2564 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2565 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2566 [`if test $gcc_cv_as_cfi_directive = yes \
2567 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2568 [Define 0/1 if your assembler supports CFI directives.])
2570 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2571 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2572 gcc_cv_as_cfi_personality_directive, ,,
2575 .cfi_personality 0, symbol
2577 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2578 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2579 then echo 1; else echo 0; fi`],
2580 [Define 0/1 if your assembler supports .cfi_personality.])
2582 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2583 gcc_cv_as_cfi_sections_directive, ,,
2585 .cfi_sections .debug_frame, .eh_frame
2589 win32 | pe | cygwin* | mingw32* | uwin*)
2590 # Need to check that we generated the correct relocation for the
2591 # .debug_frame section. This was fixed for binutils 2.21.
2592 gcc_cv_as_cfi_sections_directive=no
2593 if test "x$gcc_cv_objdump" != x; then
2594 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2595 grep secrel > /dev/null; then
2596 gcc_cv_as_cfi_sections_directive=yes
2601 gcc_cv_as_cfi_sections_directive=yes
2604 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2605 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2606 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2607 then echo 1; else echo 0; fi`],
2608 [Define 0/1 if your assembler supports .cfi_sections.])
2610 # GAS versions up to and including 2.11.0 may mis-optimize
2612 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2620 .section .eh_frame,"aw",@progbits
2622 .4byte .LECIE1-.LSCIE1
2636 .4byte .LEFDE1-.LASFDE1
2638 .4byte .LASFDE1-__FRAME_BEGIN__
2646 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2647 cat > conftest.lit <<EOF
2648 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2649 0010 01000000 12000000 18000000 00000000 ................
2650 0020 08000000 04080000 0044 .........D @&t@
2652 cat > conftest.big <<EOF
2653 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2654 0010 00000001 00000012 00000018 00000000 ................
2655 0020 00000008 04000000 0844 .........D @&t@
2657 # If the assembler didn't choke, and we can objdump,
2658 # and we got the correct data, then succeed.
2659 # The text in the here-document typically retains its unix-style line
2660 # endings, while the output of objdump will use host line endings.
2661 # Therefore, use diff -b for the comparisons.
2662 if test x$gcc_cv_objdump != x \
2663 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2664 | tail -3 > conftest.got \
2665 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2666 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2668 gcc_cv_as_eh_frame=yes
2669 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2670 gcc_cv_as_eh_frame=buggy
2672 # Uh oh, what do we do now?
2673 gcc_cv_as_eh_frame=no
2676 if test $gcc_cv_as_eh_frame = buggy; then
2677 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2678 [Define if your assembler mis-optimizes .eh_frame data.])
2681 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2682 [elf,2,12,0], [--fatal-warnings],
2683 [.section .rodata.str, "aMS", @progbits, 1])
2684 if test $gcc_cv_as_shf_merge = no; then
2685 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2686 [elf,2,12,0], [--fatal-warnings],
2687 [.section .rodata.str, "aMS", %progbits, 1])
2689 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2690 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2691 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2693 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2694 gcc_cv_as_comdat_group,
2695 [elf,2,16,0], [--fatal-warnings],
2696 [.section .text,"axG",@progbits,.foo,comdat])
2697 if test $gcc_cv_as_comdat_group = yes; then
2698 gcc_cv_as_comdat_group_percent=no
2699 gcc_cv_as_comdat_group_group=no
2701 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2702 gcc_cv_as_comdat_group_percent,
2703 [elf,2,16,0], [--fatal-warnings],
2704 [.section .text,"axG",%progbits,.foo,comdat])
2705 if test $gcc_cv_as_comdat_group_percent = yes; then
2706 gcc_cv_as_comdat_group_group=no
2708 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2709 gcc_cv_as_comdat_group_group=no
2712 # Sun as uses a completely different syntax.
2717 .group foo,".text%foo",#comdat
2718 .section ".text%foo", #alloc,#execinstr,#progbits
2723 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2725 .group foo,.text%foo,#comdat
2726 .section .text%foo, "ax", @progbits
2732 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2733 gcc_cv_as_comdat_group_group,
2739 if test x"$ld_is_gold" = xyes; then
2741 elif test $in_tree_ld = yes ; then
2743 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2744 && test $in_tree_ld_is_elf = yes; then
2747 elif echo "$ld_ver" | grep GNU > /dev/null; then
2749 if test 0"$ld_date" -lt 20050308; then
2750 if test -n "$ld_date"; then
2751 # If there was date string, but was earlier than 2005-03-08, fail
2753 elif test "$ld_vers_major" -lt 2; then
2755 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2762 *-*-solaris2.1[1-9]*)
2764 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2765 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2768 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2769 # least ld version 1.2267.
2770 if test "$ld_vers_major" -gt 1; then
2772 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2774 elif test "$ld_vers_minor" -ge 2267; then
2779 # Assume linkers other than GNU ld don't support COMDAT group.
2785 # Allow overriding the automatic COMDAT group tests above.
2786 AC_ARG_ENABLE(comdat,
2787 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2788 [comdat_group="$enable_comdat"])
2789 if test $comdat_group = no; then
2790 gcc_cv_as_comdat_group=no
2791 gcc_cv_as_comdat_group_percent=no
2792 gcc_cv_as_comdat_group_group=no
2794 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2795 [`if test $gcc_cv_as_comdat_group = yes \
2796 || test $gcc_cv_as_comdat_group_percent = yes \
2797 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2798 [Define 0/1 if your assembler and linker support COMDAT groups.])
2800 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2801 gcc_cv_as_discriminator,
2805 .loc 1 1 0 discriminator 1],,
2806 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2807 [Define if your assembler supports the .loc discriminator sub-directive.])])
2809 # Thread-local storage - the check is heavily parameterized.
2818 .section ".tdata","awT",@progbits
2821 ldq $27,__tls_get_addr($29) !literal!1
2822 lda $16,foo($29) !tlsgd!1
2823 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2824 ldq $27,__tls_get_addr($29) !literal!2
2825 lda $16,foo($29) !tlsldm!2
2826 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2827 ldq $1,foo($29) !gotdtprel
2828 ldah $2,foo($29) !dtprelhi
2829 lda $3,foo($2) !dtprello
2830 lda $4,foo($29) !dtprel
2831 ldq $1,foo($29) !gottprel
2832 ldah $2,foo($29) !tprelhi
2833 lda $3,foo($2) !tprello
2834 lda $4,foo($29) !tprel'
2837 tls_as_opt=--fatal-warnings
2839 cris-*-*|crisv32-*-*)
2841 .section ".tdata","awT",@progbits
2848 tls_as_opt=--fatal-warnings
2852 .section ".tdata","awT",@progbits
2864 .section ".tdata","awT",@progbits
2868 addil LT%foo-$tls_gdidx$,gp
2869 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2872 addil LT%foo-$tls_ldidx$,gp
2874 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2875 addil LR%foo-$tls_dtpoff$,%ret0
2876 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2878 addil LT%foo-$tls_ieoff$,gp
2879 ldw RT%foo-$tls_ieoff$(%r1),%t2
2882 addil LR%foo-$tls_leoff$,%t1
2883 ldo RR%foo-$tls_leoff$(%r1),%t2'
2886 tls_as_opt=--fatal-warnings
2890 .section ".tdata","awT",%progbits
2901 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2903 i[34567]86-*-solaris2.*)
2905 tga_func=___tls_get_addr
2907 x86_64-*-solaris2.1[0-9]*)
2909 tga_func=__tls_get_addr
2915 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2917 .section .tdata,"awt",@progbits'
2921 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2922 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2926 .section ".tdata","awT",@progbits'
2929 tls_as_opt="--fatal-warnings"
2931 conftest_s="$conftest_s
2935 leal foo@tlsgd(,%ebx,1), %eax
2936 leal foo@tlsldm(%ebx), %eax
2937 leal foo@dtpoff(%eax), %edx
2938 movl foo@gottpoff(%ebx), %eax
2939 subl foo@gottpoff(%ebx), %eax
2940 addl foo@gotntpoff(%ebx), %eax
2941 movl foo@indntpoff, %eax
2942 movl \$foo@tpoff, %eax
2943 subl \$foo@tpoff, %eax
2944 leal foo@ntpoff(%ecx), %eax"
2948 .section ".tdata","awT",@progbits
2952 leaq foo@TLSGD(%rip), %rdi
2953 leaq foo@TLSLD(%rip), %rdi
2954 leaq foo@DTPOFF(%rax), %rdx
2955 movq foo@GOTTPOFF(%rip), %rax
2956 movq $foo@TPOFF, %rax'
2959 tls_as_opt=--fatal-warnings
2963 .section ".tdata","awT",@progbits
2966 addl r16 = @ltoff(@dtpmod(foo#)), gp
2967 addl r17 = @ltoff(@dtprel(foo#)), gp
2968 addl r18 = @ltoff(@tprel(foo#)), gp
2969 addl r19 = @dtprel(foo#), gp
2970 adds r21 = @dtprel(foo#), r13
2971 movl r23 = @dtprel(foo#)
2972 addl r20 = @tprel(foo#), gp
2973 adds r22 = @tprel(foo#), r13
2974 movl r24 = @tprel(foo#)'
2977 tls_as_opt=--fatal-warnings
2981 .section .tdata,"awT",@progbits
2985 addik r5,r20,x@TLSGD
2986 addik r5,r20,x@TLSLDM'
2989 tls_as_opt='--fatal-warnings'
2993 .section .tdata,"awT",@progbits
2997 addiu $4, $28, %tlsgd(x)
2998 addiu $4, $28, %tlsldm(x)
2999 lui $4, %dtprel_hi(x)
3000 addiu $4, $4, %dtprel_lo(x)
3001 lw $4, %gottprel(x)($28)
3002 lui $4, %tprel_hi(x)
3003 addiu $4, $4, %tprel_lo(x)'
3006 tls_as_opt='-32 --fatal-warnings'
3010 .section .tdata,"awT",@progbits
3015 move.l x@TLSGD(%a5),%a0
3016 move.l x@TLSLDM(%a5),%a0
3017 move.l x@TLSLDO(%a5),%a0
3018 move.l x@TLSIE(%a5),%a0
3019 move.l x@TLSLE(%a5),%a0'
3022 tls_as_opt='--fatal-warnings'
3026 .section ".tdata","awT",%progbits
3030 add x0, x0, #:tlsgd_lo12:x
3035 tls_as_opt='--fatal-warnings'
3039 .extern __get_tpointer
3057 .section ".tdata","awT",@progbits
3065 addi 3,2,ld0@got@tlsgd
3071 addi 3,2,x1@got@tlsld
3077 addis 9,3,x2@dtprel@ha
3078 addi 9,9,x2@dtprel@l
3081 ld 9,x3@got@dtprel(2)
3087 tls_as_opt="-a64 --fatal-warnings"
3091 .section ".tdata","awT",@progbits
3099 addi 3,31,ld0@got@tlsgd
3101 addi 3,31,x1@got@tlsld
3104 addis 9,3,x2@dtprel@ha
3105 addi 9,9,x2@dtprel@l
3106 lwz 9,x3@got@tprel(31)
3109 addis 9,2,x2@tprel@ha
3110 addi 9,9,x2@tprel@l'
3113 tls_as_opt="-a32 --fatal-warnings"
3117 .section ".tdata","awT",@progbits
3126 l %r1,foo@GOTNTPOFF(%r12)
3127 l %r1,0(%r1):tls_load:foo
3128 bas %r14,0(%r1,%r13):tls_gdcall:foo
3129 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3132 tls_as_opt="-m31 --fatal-warnings"
3136 .section ".tdata","awT",@progbits
3144 lg %r1,foo@GOTNTPOFF(%r12)
3145 larl %r1,foo@INDNTPOFF
3146 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3147 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3150 tls_as_opt="-m64 -Aesame --fatal-warnings"
3152 sh-*-* | sh[34]-*-*)
3154 .section ".tdata","awT",@progbits
3164 tls_as_opt=--fatal-warnings
3168 sparc*-sun-solaris2.*)
3170 tga_func=__tls_get_addr
3176 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3178 .section ".tdata",#alloc,#write,#tls'
3183 .section ".tdata","awT",@progbits'
3186 tls_as_opt="-32 --fatal-warnings"
3188 conftest_s="$conftest_s
3191 sethi %tgd_hi22(foo), %o0
3192 add %o0, %tgd_lo10(foo), %o1
3193 add %l7, %o1, %o0, %tgd_add(foo)
3194 call __tls_get_addr, %tgd_call(foo)
3195 sethi %tldm_hi22(foo), %l1
3196 add %l1, %tldm_lo10(foo), %l2
3197 add %l7, %l2, %o0, %tldm_add(foo)
3198 call __tls_get_addr, %tldm_call(foo)
3199 sethi %tldo_hix22(foo), %l3
3200 xor %l3, %tldo_lox10(foo), %l4
3201 add %o0, %l4, %l5, %tldo_add(foo)
3202 sethi %tie_hi22(foo), %o3
3203 add %o3, %tie_lo10(foo), %o3
3204 ld [%l7 + %o3], %o2, %tie_ld(foo)
3205 add %g7, %o2, %o4, %tie_add(foo)
3206 sethi %tle_hix22(foo), %l1
3207 xor %l1, %tle_lox10(foo), %o5
3208 ld [%g7 + %o5], %o1"
3212 .section ".tdata","awT",@progbits
3215 addli r0, zero, tls_gd(foo)
3216 auli r0, zero, tls_gd_ha16(foo)
3217 addli r0, r0, tls_gd_lo16(foo)
3219 addli r0, zero, tls_ie(foo)
3220 auli r0, r0, tls_ie_ha16(foo)
3221 addli r0, r0, tls_ie_lo16(foo)'
3224 tls_as_opt="--fatal-warnings"
3228 .section ".tdata","awT",@progbits
3231 shl16insli r0, zero, hw0_last_tls_gd(foo)
3232 shl16insli r0, zero, hw1_last_tls_gd(foo)
3233 shl16insli r0, r0, hw0_tls_gd(foo)
3235 shl16insli r0, zero, hw1_last_tls_ie(foo)
3236 shl16insli r0, r0, hw0_tls_ie(foo)'
3239 tls_as_opt="--fatal-warnings"
3243 .section ".tdata","awT",@progbits
3246 movi a8, foo@TLSFUNC
3247 movi a10, foo@TLSARG
3248 callx8.tls a8, foo@TLSCALL'
3255 if test "x$enable_tls" = xno ; then
3256 : # TLS explicitly disabled.
3257 elif test "x$enable_tls" = xyes ; then
3258 set_have_as_tls=yes # TLS explicitly enabled.
3259 elif test -z "$tls_first_major"; then
3260 : # If we don't have a check, assume no support.
3262 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3263 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3264 [set_have_as_tls=yes])
3267 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3268 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3269 # Sun style that Sun ld and GCC don't support any longer.
3271 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3273 # Check ld and ld.so.1 TLS support.
3274 if echo "$ld_ver" | grep GNU > /dev/null; then
3275 # Assume all interesting versions of GNU ld have TLS support.
3276 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3280 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3282 min_tls_ld_vers_minor=374
3284 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3285 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3286 min_tls_ld_vers_minor=343
3289 if test "$ld_vers_major" -gt 1 || \
3290 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3296 AC_MSG_RESULT($ld_tls_support)
3299 save_LDFLAGS="$LDFLAGS"
3303 AC_MSG_CHECKING(library containing $tga_func)
3304 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3305 # (32-bit x86) only lived in libthread, so check for that. Keep
3306 # set_have_as_tls if found, disable if not.
3307 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3308 # Clear LIBS if we cannot support TLS.
3309 if test $set_have_as_tls = no; then
3312 # Always define LIB_TLS_SPEC, even without TLS support.
3313 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3314 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3315 AC_MSG_RESULT($LIBS)
3318 LDFLAGS="$save_LDFLAGS"
3321 if test $set_have_as_tls = yes ; then
3322 AC_DEFINE(HAVE_AS_TLS, 1,
3323 [Define if your assembler and linker support thread-local storage.])
3326 # Target-specific assembler checks.
3328 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3329 gcc_cv_ld_static_dynamic=no
3330 gcc_cv_ld_static_option='-Bstatic'
3331 gcc_cv_ld_dynamic_option='-Bdynamic'
3332 if test $in_tree_ld = yes ; then
3333 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3334 gcc_cv_ld_static_dynamic=yes
3336 elif test x$gcc_cv_ld != x; then
3337 # Check if linker supports -Bstatic/-Bdynamic option
3338 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3339 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3340 gcc_cv_ld_static_dynamic=yes
3343 # AIX ld uses -b flags
3344 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3345 gcc_cv_ld_static_dynamic=yes
3346 gcc_cv_ld_static_option="-bstatic"
3347 gcc_cv_ld_dynamic_option="-bdynamic"
3349 # HP-UX ld uses -a flags to select between shared and archive.
3351 if test x"$gnu_ld" = xno; then
3352 gcc_cv_ld_static_dynamic=yes
3353 gcc_cv_ld_static_option="-aarchive_shared"
3354 gcc_cv_ld_dynamic_option="-adefault"
3357 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3359 gcc_cv_ld_static_dynamic=yes
3364 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3365 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3366 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3367 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3368 [Define to the linker option to disable use of shared objects.])
3369 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3370 [Define to the linker option to enable use of shared objects.])
3372 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3374 if test x"$demangler_in_ld" = xyes; then
3375 AC_MSG_CHECKING(linker --demangle support)
3376 gcc_cv_ld_demangle=no
3377 if test $in_tree_ld = yes; then
3378 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3379 gcc_cv_ld_demangle=yes
3381 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3382 # Check if the GNU linker supports --demangle option
3383 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3384 gcc_cv_ld_demangle=yes
3387 if test x"$gcc_cv_ld_demangle" = xyes; then
3388 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3389 [Define if your linker supports --demangle option.])
3391 AC_MSG_RESULT($gcc_cv_ld_demangle)
3394 AC_MSG_CHECKING(linker plugin support)
3396 if test -f liblto_plugin.la; then
3397 save_ld_ver="$ld_ver"
3398 save_ld_vers_major="$ld_vers_major"
3399 save_ld_vers_minor="$ld_vers_minor"
3400 save_ld_is_gold="$ld_is_gold"
3404 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3406 # FIXME: ld_is_gold?
3407 ld_vers_major="$gcc_cv_gld_major_version"
3408 ld_vers_minor="$gcc_cv_gld_minor_version"
3410 # Determine plugin linker version.
3411 # FIXME: Partial duplicate from above, generalize.
3413 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3414 if echo "$ld_ver" | grep GNU > /dev/null; then
3415 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3417 ld_vers=`echo $ld_ver | sed -n \
3418 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3420 ld_vers=`echo $ld_ver | sed -n \
3421 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3423 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3424 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3429 # Determine plugin support.
3430 if echo "$ld_ver" | grep GNU > /dev/null; then
3431 # Require GNU ld or gold 2.21+ for plugin support by default.
3432 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3434 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3435 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3440 ld_ver="$save_ld_ver"
3441 ld_vers_major="$save_ld_vers_major"
3442 ld_vers_minor="$save_ld_vers_minor"
3443 ld_is_gold="$save_ld_is_gold"
3445 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3446 [Define to the level of your linker's plugin support.])
3447 AC_MSG_RESULT($gcc_cv_lto_plugin)
3450 # All TARGET_ABI_OSF targets.
3451 alpha*-*-linux* | alpha*-*-*bsd*)
3452 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3453 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3456 extbl $3, $2, $3 !lituse_bytoff!1
3457 ldq $2, a($29) !literal!1
3458 ldq $4, b($29) !literal!2
3459 ldq_u $3, 0($2) !lituse_base!1
3460 ldq $27, f($29) !literal!5
3461 jsr $26, ($27), f !lituse_jsr!5
3462 ldah $29, 0($26) !gpdisp!3
3463 lda $0, c($29) !gprel
3464 ldah $1, d($29) !gprelhigh
3465 lda $1, d($1) !gprellow
3466 lda $29, 0($29) !gpdisp!3],,
3467 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3468 [Define if your assembler supports explicit relocations.])])
3469 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3470 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3473 ldq $27, a($29) !literal!1
3474 jsr $26, ($27), a !lituse_jsrdirect!1],,
3475 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3476 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3480 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3481 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3482 [-no-mul-bug-abort], [.text],,
3483 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3484 [Define if your assembler supports the -no-mul-bug-abort option.])])
3488 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3489 [.register %g2, #scratch],,
3490 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3491 [Define if your assembler supports .register.])])
3493 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3494 [.section "nobits",#alloc,#write,#nobits
3495 .section "progbits",#alloc,#write,#progbits])
3496 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3497 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3498 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3500 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3502 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3503 [Define if your assembler supports -relax option.])])
3505 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3506 gcc_cv_as_sparc_gotdata_op,,
3513 sethi %gdop_hix22(foo), %g1
3514 xor %g1, %gdop_lox10(foo), %g1
3515 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3516 [if test x$gcc_cv_ld != x \
3517 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3518 if test x$gcc_cv_objdump != x; then
3519 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3520 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3521 gcc_cv_as_sparc_gotdata_op=no
3523 gcc_cv_as_sparc_gotdata_op=yes
3528 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3529 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3531 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3532 gcc_cv_as_sparc_ua_pcrel,,
3540 .uaword %r_disp32(foo)],
3541 [if test x$gcc_cv_ld != x \
3542 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3543 gcc_cv_as_sparc_ua_pcrel=yes
3546 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3547 [Define if your assembler and linker support unaligned PC relative relocs.])
3549 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3550 gcc_cv_as_sparc_ua_pcrel_hidden,,
3555 .uaword %r_disp32(foo)
3556 .byte 0x32, 0x33, 0x34
3561 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3562 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3563 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3564 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3565 if $gcc_cv_objdump -R conftest 2> /dev/null \
3566 | grep 'DISP32' > /dev/null 2>&1; then
3569 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3573 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3574 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3575 ]) # unaligned pcrel relocs
3577 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3578 gcc_cv_as_sparc_offsetable_lo10,,
3581 or %g1, %lo(ab) + 12, %g1
3582 or %g1, %lo(ab + 12), %g1],
3583 [if test x$gcc_cv_objdump != x \
3584 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3585 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3586 gcc_cv_as_sparc_offsetable_lo10=yes
3588 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3589 [Define if your assembler supports offsetable %lo().])])
3591 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3592 gcc_cv_as_sparc_fmaf,,
3595 .register %g2, #scratch
3596 .register %g3, #scratch
3598 fmaddd %f0, %f2, %f4, %f6
3599 addxccc %g1, %g2, %g3
3600 fsrl32 %f2, %f4, %f8
3601 fnaddd %f10, %f12, %f14],,
3602 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3603 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3605 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3606 gcc_cv_as_sparc_sparc4,,
3609 .register %g2, #scratch
3610 .register %g3, #scratch
3613 1: cwbneg %g2, %g3, 1f
3616 aes_kexpand0 %f4, %f6, %f8
3617 des_round %f38, %f40, %f42, %f44
3618 camellia_f %f54, %f56, %f58, %f60
3619 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3620 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3621 [Define if your assembler supports SPARC4 instructions.])])
3623 gcc_GAS_CHECK_FEATURE([LEON instructions],
3624 gcc_cv_as_sparc_leon,,
3627 .register %g2, #scratch
3628 .register %g3, #scratch
3632 cas [[%g2]], %g3, %g1],,
3633 [AC_DEFINE(HAVE_AS_LEON, 1,
3634 [Define if your assembler supports LEON instructions.])])
3638 i[34567]86-*-* | x86_64-*-*)
3642 # Full C++ conformance when using a shared libstdc++-v3 requires some
3643 # support from the Cygwin DLL, which in more recent versions exports
3644 # wrappers to aid in interposing and redirecting operators new, delete,
3645 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3646 # are configuring for a version of Cygwin that exports the wrappers.
3647 if test x$host = x$target && test x$host_cpu = xi686; then
3648 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3650 # Can't check presence of libc functions during cross-compile, so
3651 # we just have to assume we're building for an up-to-date target.
3652 gcc_ac_cygwin_dll_wrappers=yes
3654 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3655 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3656 [Define if you want to generate code by default that assumes that the
3657 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3660 cygwin* | pe | mingw32* | interix*)
3661 # Recent binutils allows the three-operand form of ".comm" on PE. This
3662 # definition is used unconditionally to initialise the default state of
3663 # the target option variable that governs usage of the feature.
3664 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3665 [2,19,52],,[.comm foo,1,32])
3666 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3667 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3668 [Define if your assembler supports specifying the alignment
3669 of objects allocated using the GAS .comm command.])
3670 # Used for DWARF 2 in PE
3671 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3672 gcc_cv_as_ix86_pe_secrel32,
3678 [if test x$gcc_cv_ld != x \
3679 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3680 gcc_cv_as_ix86_pe_secrel32=yes
3683 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3684 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3685 # Test if the assembler supports the extended form of the .section
3686 # directive that specifies section alignment. LTO support uses this,
3687 # but normally only after installation, so we warn but don't fail the
3688 # configure if LTO is enabled but the assembler does not support it.
3689 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3690 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3691 if test x$gcc_cv_as_section_has_align != xyes; then
3692 case ",$enable_languages," in
3694 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3698 # Test if the assembler supports the section flag 'e' for specifying
3699 # an excluded section.
3700 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3704 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3705 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3706 [Define if your assembler supports specifying the section flag e.])
3710 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3711 gcc_cv_as_ix86_filds,,,
3712 [filds mem; fists mem],,
3713 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3714 [Define if your assembler uses filds and fists mnemonics.])])
3716 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3717 gcc_cv_as_ix86_fildq,,,
3718 [fildq mem; fistpq mem],,
3719 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3720 [Define if your assembler uses fildq and fistq mnemonics.])])
3722 gcc_GAS_CHECK_FEATURE([cmov syntax],
3723 gcc_cv_as_ix86_cmov_sun_syntax,,,
3724 [cmovl.l %edx, %eax],,
3725 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3726 [Define if your assembler supports the Sun syntax for cmov.])])
3728 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3729 gcc_cv_as_ix86_ffreep,,,
3731 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3732 [Define if your assembler supports the ffreep mnemonic.])])
3734 gcc_GAS_CHECK_FEATURE([.quad directive],
3735 gcc_cv_as_ix86_quad,,,
3737 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3738 [Define if your assembler supports the .quad directive.])])
3740 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3741 gcc_cv_as_ix86_sahf,,,
3744 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3745 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3747 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3748 gcc_cv_as_ix86_interunit_movq,,,
3752 [AC_DEFINE(HAVE_AS_IX86_INTERUNIT_MOVQ, 1,
3753 [Define if your assembler supports interunit movq mnemonic.])])
3755 gcc_GAS_CHECK_FEATURE([hle prefixes],
3756 gcc_cv_as_ix86_hle,,,
3757 [lock xacquire cmpxchg %esi, (%ecx)],,
3758 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3759 [Define if your assembler supports HLE prefixes.])])
3761 gcc_GAS_CHECK_FEATURE([swap suffix],
3762 gcc_cv_as_ix86_swap,,,
3763 [movl.s %esp, %ebp],,
3764 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3765 [Define if your assembler supports the swap suffix.])])
3767 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3768 gcc_cv_as_ix86_diff_sect_delta,,,
3776 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3777 [Define if your assembler supports the subtraction of symbols in different sections.])])
3779 # These two are used unconditionally by i386.[ch]; it is to be defined
3780 # to 1 if the feature is present, 0 otherwise.
3781 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3782 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3788 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3789 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3790 [Define true if the assembler supports '.long foo@GOTOFF'.])
3792 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3793 gcc_cv_as_ix86_rep_lock_prefix,,,
3799 lock addl %edi, (%eax,%esi)
3800 lock orl $0, (%esp)],,
3801 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3802 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3804 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3805 gcc_cv_as_ix86_tlsgdplt,,,
3806 [call tls_gd@tlsgdplt],
3807 [if test x$gcc_cv_ld != x \
3808 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3809 gcc_cv_as_ix86_tlsgdplt=yes
3812 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3813 [Define if your assembler and linker support @tlsgdplt.])])
3815 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3816 gcc_cv_as_ix86_tlsldmplt,,,
3818 call tls_ld@tlsldmplt],
3819 [if test x$gcc_cv_ld != x \
3820 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3821 gcc_cv_as_ix86_tlsldmplt=yes
3824 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3825 [Define if your assembler and linker support @tlsldmplt.])])
3830 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3831 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3833 addl r15 = @ltoffx(x#), gp
3835 ld8.mov r16 = [[r15]], x#],,
3836 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3837 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3843 *-*-aix*) conftest_s=' .machine "pwr5"
3847 gcc_GAS_CHECK_FEATURE([.machine directive support],
3848 gcc_cv_as_machine_directive,,,
3849 [ .machine ppc7400])
3850 if test x$gcc_cv_as_machine_directive != xyes; then
3851 echo "*** This target requires an assembler supporting \".machine\"" >&2
3852 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3853 test x$build = x$target && exit 1
3857 *) conftest_s=' .machine power4
3862 gcc_GAS_CHECK_FEATURE([mfcr field support],
3863 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3865 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3866 [Define if your assembler supports mfcr field.])])
3869 *-*-aix*) conftest_s=' .machine "pwr5"
3872 *) conftest_s=' .machine power5
3877 gcc_GAS_CHECK_FEATURE([popcntb support],
3878 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3880 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3881 [Define if your assembler supports popcntb field.])])
3884 *-*-aix*) conftest_s=' .machine "pwr5x"
3887 *) conftest_s=' .machine power5
3892 gcc_GAS_CHECK_FEATURE([fp round support],
3893 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3895 [AC_DEFINE(HAVE_AS_FPRND, 1,
3896 [Define if your assembler supports fprnd.])])
3899 *-*-aix*) conftest_s=' .machine "pwr6"
3902 *) conftest_s=' .machine power6
3907 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3908 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3910 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3911 [Define if your assembler supports mffgpr and mftgpr.])])
3914 *-*-aix*) conftest_s=' .csect .text[[PR]]
3916 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3920 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3921 *) conftest_s=' .text
3923 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3926 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3927 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3929 [AC_DEFINE(HAVE_AS_REL16, 1,
3930 [Define if your assembler supports R_PPC_REL16 relocs.])])
3933 *-*-aix*) conftest_s=' .machine "pwr6"
3936 *) conftest_s=' .machine power6
3941 gcc_GAS_CHECK_FEATURE([compare bytes support],
3942 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3944 [AC_DEFINE(HAVE_AS_CMPB, 1,
3945 [Define if your assembler supports cmpb.])])
3948 *-*-aix*) conftest_s=' .machine "pwr6"
3951 *) conftest_s=' .machine power6
3956 gcc_GAS_CHECK_FEATURE([decimal float support],
3957 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3959 [AC_DEFINE(HAVE_AS_DFP, 1,
3960 [Define if your assembler supports DFP instructions.])])
3963 *-*-aix*) conftest_s=' .machine "pwr7"
3966 *) conftest_s=' .machine power7
3971 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3972 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3974 [AC_DEFINE(HAVE_AS_VSX, 1,
3975 [Define if your assembler supports VSX instructions.])])
3978 *-*-aix*) conftest_s=' .machine "pwr7"
3981 *) conftest_s=' .machine power7
3986 gcc_GAS_CHECK_FEATURE([popcntd support],
3987 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3989 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3990 [Define if your assembler supports POPCNTD instructions.])])
3993 *-*-aix*) conftest_s=' .machine "pwr8"
3994 .csect .text[[PR]]';;
3995 *) conftest_s=' .machine power8
3999 gcc_GAS_CHECK_FEATURE([power8 support],
4000 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4002 [AC_DEFINE(HAVE_AS_POWER8, 1,
4003 [Define if your assembler supports POWER8 instructions.])])
4006 *-*-aix*) conftest_s=' .csect .text[[PR]]
4008 *) conftest_s=' .text
4012 gcc_GAS_CHECK_FEATURE([lwsync support],
4013 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4015 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4016 [Define if your assembler supports LWSYNC instructions.])])
4019 *-*-aix*) conftest_s=' .machine "476"
4022 *) conftest_s=' .machine "476"
4027 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4028 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4030 [AC_DEFINE(HAVE_AS_DCI, 1,
4031 [Define if your assembler supports the DCI/ICI instructions.])])
4033 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4034 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4035 [.gnu_attribute 4,1],,
4036 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4037 [Define if your assembler supports .gnu_attribute.])])
4039 gcc_GAS_CHECK_FEATURE([tls marker support],
4040 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4041 [ bl __tls_get_addr(x@tlsgd)],,
4042 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4043 [Define if your assembler supports arg info for __tls_get_addr.])])
4047 gcc_GAS_CHECK_FEATURE([.ref support],
4048 gcc_cv_as_aix_ref, [2,21,0],,
4049 [ .csect stuff[[rw]]
4055 [AC_DEFINE(HAVE_AS_REF, 1,
4056 [Define if your assembler supports .ref])])
4062 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4063 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4064 [ lw $4,%gp_rel(foo)($4)],,
4065 [if test x$target_cpu_default = x
4066 then target_cpu_default=MASK_EXPLICIT_RELOCS
4067 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4069 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4070 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4071 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4072 [Define if the assembler understands -mno-shared.])])
4074 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4075 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4076 [.gnu_attribute 4,1],,
4077 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4078 [Define if your assembler supports .gnu_attribute.])])
4080 gcc_GAS_CHECK_FEATURE([.micromips support],
4081 gcc_cv_as_micromips_support,,[--fatal-warnings],
4083 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4084 [Define if your assembler supports the .set micromips directive])])
4086 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4087 gcc_cv_as_mips_dtprelword, [2,18,0],,
4088 [.section .tdata,"awT",@progbits
4092 .dtprelword x+0x8000],,
4093 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4094 [Define if your assembler supports .dtprelword.])])
4096 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4097 gcc_cv_as_mips_dspr1_mult,,,
4107 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4108 [Define if your assembler supports DSPR1 mult.])])
4110 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4111 gcc_cv_as_ld_jalr_reloc=no
4112 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4113 if test $in_tree_ld = yes ; then
4114 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4115 && test $in_tree_ld_is_elf = yes; then
4116 gcc_cv_as_ld_jalr_reloc=yes
4118 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4119 echo ' .ent x' > conftest.s
4120 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4121 echo ' ld $25,%call16(y)($28)' >> conftest.s
4122 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4123 echo '1: jalr $25' >> conftest.s
4124 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4125 echo '1: jalr $25' >> conftest.s
4126 echo ' .end x' >> conftest.s
4127 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4128 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4129 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4130 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4131 gcc_cv_as_ld_jalr_reloc=yes
4137 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4138 if test x$target_cpu_default = x; then
4139 target_cpu_default=MASK_RELAX_PIC_CALLS
4141 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4144 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4146 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4147 [gcc_cv_ld_mips_personality_relaxation],
4148 [gcc_cv_ld_mips_personality_relaxation=no
4149 if test $in_tree_ld = yes ; then
4150 if test "$gcc_cv_gld_major_version" -eq 2 \
4151 -a "$gcc_cv_gld_minor_version" -ge 21 \
4152 -o "$gcc_cv_gld_major_version" -gt 2; then
4153 gcc_cv_ld_mips_personality_relaxation=yes
4155 elif test x$gcc_cv_as != x \
4156 -a x$gcc_cv_ld != x \
4157 -a x$gcc_cv_readelf != x ; then
4158 cat > conftest.s <<EOF
4160 .cfi_personality 0x80,indirect_ptr
4167 .section .data,"aw",@progbits
4171 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4172 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4173 if $gcc_cv_readelf -d conftest 2>&1 \
4174 | grep TEXTREL > /dev/null 2>&1; then
4176 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4177 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4180 gcc_cv_ld_mips_personality_relaxation=yes
4184 rm -f conftest.s conftest.o conftest])
4185 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4186 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4187 [Define if your linker can relax absolute .eh_frame personality
4188 pointers into PC-relative form.])
4191 gcc_GAS_CHECK_FEATURE([-mnan= support],
4192 gcc_cv_as_mips_nan,,
4194 [AC_DEFINE(HAVE_AS_NAN, 1,
4195 [Define if the assembler understands -mnan=.])])
4196 if test x$gcc_cv_as_mips_nan = xno \
4197 && test x$with_nan != x; then
4199 [Requesting --with-nan= requires assembler support for -mnan=])
4204 # Mips and HP-UX need the GNU assembler.
4205 # Linux on IA64 might be able to use the Intel assembler.
4208 mips*-*-* | *-*-hpux* )
4209 if test x$gas_flag = xyes \
4210 || test x"$host" != x"$build" \
4211 || test ! -x "$gcc_cv_as" \
4212 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4215 echo "*** This configuration requires the GNU assembler" >&2
4221 # ??? Not all targets support dwarf2 debug_line, even within a version
4222 # of gas. Moreover, we need to emit a valid instruction to trigger any
4223 # info to the output file. So, as supported targets are added to gas 2.11,
4224 # add some instruction here to (also) show we expect this might work.
4225 # ??? Once 2.11 is released, probably need to add first known working
4226 # version to the per-target configury.
4228 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4229 | mips | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 \
4240 if test x"$insn" != x; then
4242 .file 1 \"conftest.s\"
4245 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4246 gcc_cv_as_dwarf2_debug_line,
4247 [elf,2,11,0],, [$conftest_s],
4248 [if test x$gcc_cv_objdump != x \
4249 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4250 | grep debug_line > /dev/null 2>&1; then
4251 gcc_cv_as_dwarf2_debug_line=yes
4254 # The .debug_line file table must be in the exact order that
4255 # we specified the files, since these indices are also used
4256 # by DW_AT_decl_file. Approximate this test by testing if
4257 # the assembler bitches if the same index is assigned twice.
4258 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4259 gcc_cv_as_dwarf2_file_buggy,,,
4263 if test $gcc_cv_as_dwarf2_debug_line = yes \
4264 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4265 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4266 [Define if your assembler supports dwarf2 .file/.loc directives,
4267 and preserves file table indices exactly as given.])
4270 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4271 gcc_cv_as_gdwarf2_flag,
4272 [elf,2,11,0], [--gdwarf2], [$insn],,
4273 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4274 [Define if your assembler supports the --gdwarf2 option.])])
4276 gcc_GAS_CHECK_FEATURE([--gstabs option],
4277 gcc_cv_as_gstabs_flag,
4278 [elf,2,11,0], [--gstabs], [$insn],
4279 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4280 # and warns about it, but still exits successfully. So check for
4282 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4284 else gcc_cv_as_gstabs_flag=yes
4286 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4287 [Define if your assembler supports the --gstabs option.])])
4289 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4290 gcc_cv_as_debug_prefix_map_flag,
4291 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4292 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4293 [Define if your assembler supports the --debug-prefix-map option.])])
4296 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4299 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4300 [Define if your assembler supports .lcomm with an alignment field.])])
4302 AC_ARG_ENABLE(gnu-unique-object,
4303 [AS_HELP_STRING([--enable-gnu-unique-object],
4304 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4305 [case $enable_gnu_unique_object in
4307 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4308 Valid choices are 'yes' and 'no'.]) ;;
4310 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4312 [.type foo, '$target_type_format_char'gnu_unique_object],,
4313 # We need to unquote above to to use the definition from config.gcc.
4314 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4315 [[if test x$host = x$build -a x$host = x$target &&
4316 ldd --version 2>/dev/null &&
4317 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4318 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4319 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4320 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4321 if test "$glibcnum" -ge 2011 ; then
4322 enable_gnu_unique_object=yes
4325 if test x$enable_gnu_unique_object = xyes; then
4326 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4327 [Define if your assembler supports @gnu_unique_object.])
4330 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4331 [gcc_cv_as_line_zero],
4332 [gcc_cv_as_line_zero=no
4333 if test $in_tree_gas = yes; then
4334 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4335 elif test "x$gcc_cv_as" != x; then
4336 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4337 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4338 test "x`cat conftest.out`" = x
4340 gcc_cv_as_line_zero=yes
4342 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4343 cat conftest.s >&AS_MESSAGE_LOG_FD
4344 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4345 cat conftest.out >&AS_MESSAGE_LOG_FD
4347 rm -f conftest.o conftest.s conftest.out
4349 if test "x$gcc_cv_as_line_zero" = xyes; then
4350 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4351 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4354 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4355 gcc_cv_ld_eh_frame_hdr=no
4356 if test $in_tree_ld = yes ; then
4357 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4358 && test $in_tree_ld_is_elf = yes; then
4359 gcc_cv_ld_eh_frame_hdr=yes
4361 elif test x$gcc_cv_ld != x; then
4362 if echo "$ld_ver" | grep GNU > /dev/null; then
4363 # Check if linker supports --eh-frame-hdr option
4364 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4365 gcc_cv_ld_eh_frame_hdr=yes
4370 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4371 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4372 gcc_cv_ld_eh_frame_hdr=yes
4378 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4379 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4380 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4381 [Define if your linker supports .eh_frame_hdr.])
4383 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4385 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4386 gcc_cv_ld_eh_frame_ciev3=no
4387 if test $in_tree_ld = yes ; then
4388 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4389 && test $in_tree_ld_is_elf = yes; then
4390 gcc_cv_ld_eh_frame_ciev3=yes
4392 elif test x$gcc_cv_ld != x; then
4393 if echo "$ld_ver" | grep GNU > /dev/null; then
4394 gcc_cv_ld_eh_frame_ciev3=yes
4395 if test 0"$ld_date" -lt 20040513; then
4396 if test -n "$ld_date"; then
4397 # If there was date string, but was earlier than 2004-05-13, fail
4398 gcc_cv_ld_eh_frame_ciev3=no
4399 elif test "$ld_vers_major" -lt 2; then
4400 gcc_cv_ld_eh_frame_ciev3=no
4401 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4402 gcc_cv_ld_eh_frame_ciev3=no
4408 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4409 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4410 gcc_cv_ld_eh_frame_ciev3=yes
4416 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4417 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4418 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4419 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4421 AC_MSG_CHECKING(linker position independent executable support)
4423 if test $in_tree_ld = yes ; then
4424 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4425 && test $in_tree_ld_is_elf = yes; then
4428 elif test x$gcc_cv_ld != x; then
4429 # Check if linker supports -pie option
4430 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4434 if test x"$gcc_cv_ld_pie" = xyes; then
4435 AC_DEFINE(HAVE_LD_PIE, 1,
4436 [Define if your linker supports -pie option.])
4438 AC_MSG_RESULT($gcc_cv_ld_pie)
4440 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4441 gcc_cv_ld_eh_gc_sections=no
4442 if test $in_tree_ld = yes ; then
4443 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4444 && test $in_tree_ld_is_elf = yes; then
4445 gcc_cv_ld_eh_gc_sections=yes
4447 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4448 cat > conftest.s <<EOF
4451 .type _start, @function
4454 .size _start, .-_start
4455 .section .text.foo,"ax",@progbits
4456 .type foo, @function
4460 .section .gcc_except_table.foo,"a",@progbits
4463 .section .eh_frame,"a",@progbits
4466 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4467 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4468 | grep "gc-sections option ignored" > /dev/null; then
4469 gcc_cv_ld_eh_gc_sections=no
4470 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4471 | grep gcc_except_table > /dev/null; then
4472 gcc_cv_ld_eh_gc_sections=yes
4473 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4474 if test x$gcc_cv_as_comdat_group != xyes; then
4475 gcc_cv_ld_eh_gc_sections=no
4476 cat > conftest.s <<EOF
4479 .type _start, @function
4482 .size _start, .-_start
4483 .section .gnu.linkonce.t.foo,"ax",@progbits
4484 .type foo, @function
4488 .section .gcc_except_table.foo,"a",@progbits
4491 .section .eh_frame,"a",@progbits
4494 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4495 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4496 | grep "gc-sections option ignored" > /dev/null; then
4497 gcc_cv_ld_eh_gc_sections=no
4498 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4499 | grep gcc_except_table > /dev/null; then
4500 gcc_cv_ld_eh_gc_sections=yes
4506 rm -f conftest.s conftest.o conftest
4510 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4511 gcc_cv_ld_eh_gc_sections=no
4514 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4515 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4516 [Define if your linker supports garbage collection of
4517 sections in presence of EH frames.])
4519 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4521 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4522 gcc_cv_ld_eh_gc_sections_bug=no
4523 if test $in_tree_ld = yes ; then
4524 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4525 && test $in_tree_ld_is_elf = yes; then
4526 gcc_cv_ld_eh_gc_sections_bug=yes
4528 elif test x$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
4529 gcc_cv_ld_eh_gc_sections_bug=yes
4530 cat > conftest.s <<EOF
4533 .type _start, @function
4536 .size _start, .-_start
4537 .section .text.startup.foo,"ax",@progbits
4538 .type foo, @function
4542 .section .gcc_except_table.foo,"a",@progbits
4545 .section .eh_frame,"a",@progbits
4548 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4549 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4550 | grep "gc-sections option ignored" > /dev/null; then
4552 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4553 | grep gcc_except_table > /dev/null; then
4554 gcc_cv_ld_eh_gc_sections_bug=no
4557 rm -f conftest.s conftest.o conftest
4559 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4560 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4561 [Define if your linker has buggy garbage collection of
4562 sections support when .text.startup.foo like sections are used.])
4564 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4570 AC_CACHE_CHECK(linker --as-needed support,
4571 gcc_cv_ld_as_needed,
4572 [gcc_cv_ld_as_needed=no
4573 gcc_cv_ld_as_needed_option='--as-needed'
4574 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4575 if test $in_tree_ld = yes ; then
4576 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4577 && test $in_tree_ld_is_elf = yes; then
4578 gcc_cv_ld_as_needed=yes
4580 elif test x$gcc_cv_ld != x; then
4581 # Check if linker supports --as-needed and --no-as-needed options
4582 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4583 gcc_cv_ld_as_needed=yes
4586 # Solaris 2 ld always supports -z ignore/-z record.
4588 gcc_cv_ld_as_needed=yes
4589 gcc_cv_ld_as_needed_option="-z ignore"
4590 gcc_cv_ld_no_as_needed_option="-z record"
4595 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4596 # dl_iterate_phdr, i.e. since Solaris 11.
4598 *-*-solaris2.1[[1-9]]*)
4600 i?86-*-* | x86_64-*-*)
4601 if echo "$ld_ver" | grep GNU > /dev/null; then
4602 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4603 gcc_cv_ld_as_needed=no
4609 gcc_cv_ld_as_needed=no
4613 if test x"$gcc_cv_ld_as_needed" = xyes; then
4614 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4615 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4616 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4617 [Define to the linker option to ignore unused dependencies.])
4618 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4619 [Define to the linker option to keep unused dependencies.])
4622 case "$target:$tm_file" in
4623 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4626 emul_name="-melf64lppc"
4629 emul_name="-melf64ppc"
4632 emul_name="-melf64ppc_fbsd"
4635 AC_CACHE_CHECK(linker support for omitting dot symbols,
4636 gcc_cv_ld_no_dot_syms,
4637 [gcc_cv_ld_no_dot_syms=no
4638 if test x"$ld_is_gold" = xyes; then
4639 gcc_cv_ld_no_dot_syms=yes
4640 elif test $in_tree_ld = yes ; then
4641 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4642 gcc_cv_ld_no_dot_syms=yes
4644 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4645 cat > conftest1.s <<EOF
4649 cat > conftest2.s <<EOF
4650 .section ".opd","aw"
4655 .quad .LEfoo,.TOC.@tocbase,0
4661 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4662 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4663 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4664 gcc_cv_ld_no_dot_syms=yes
4666 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4669 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4670 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4671 [Define if your PowerPC64 linker only needs function descriptor syms.])
4674 AC_CACHE_CHECK(linker large toc support,
4675 gcc_cv_ld_large_toc,
4676 [gcc_cv_ld_large_toc=no
4677 if test x"$ld_is_gold" = xyes; then
4678 gcc_cv_ld_large_toc=yes
4679 elif test $in_tree_ld = yes ; then
4680 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4681 gcc_cv_ld_large_toc=yes
4683 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4684 cat > conftest.s <<EOF
4685 .section ".tbss","awT",@nobits
4691 addis 9,13,ie0@got@tprel@ha
4692 ld 9,ie0@got@tprel@l(9)
4694 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4695 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4696 gcc_cv_ld_large_toc=yes
4698 rm -f conftest conftest.o conftest.s
4701 if test x"$gcc_cv_ld_large_toc" = xyes; then
4702 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4703 [Define if your PowerPC64 linker supports a large TOC.])
4710 AC_CACHE_CHECK(linker large toc support,
4711 gcc_cv_ld_large_toc,
4712 [gcc_cv_ld_large_toc=no
4713 if test x$gcc_cv_as != x ; then
4714 cat > conftest.s <<EOF
4724 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4725 gcc_cv_ld_large_toc=yes
4727 rm -f conftest conftest.o conftest.s
4730 if test x"$gcc_cv_ld_large_toc" = xyes; then
4731 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4732 [Define if your PowerPC64 linker supports a large TOC.])
4737 AC_CACHE_CHECK(linker --build-id support,
4739 [gcc_cv_ld_buildid=no
4740 if test $in_tree_ld = yes ; then
4741 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4742 "$gcc_cv_gld_minor_version" -ge 18 -o \
4743 "$gcc_cv_gld_major_version" -gt 2 \
4744 && test $in_tree_ld_is_elf = yes; then
4745 gcc_cv_ld_buildid=yes
4747 elif test x$gcc_cv_ld != x; then
4748 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4749 gcc_cv_ld_buildid=yes
4752 if test x"$gcc_cv_ld_buildid" = xyes; then
4753 AC_DEFINE(HAVE_LD_BUILDID, 1,
4754 [Define if your linker supports --build-id.])
4757 AC_ARG_ENABLE(linker-build-id,
4758 [AS_HELP_STRING([--enable-linker-build-id],
4759 [compiler will always pass --build-id to linker])],
4761 enable_linker_build_id=no)
4763 if test x"$enable_linker_build_id" = xyes; then
4764 if test x"$gcc_cv_ld_buildid" = xyes; then
4765 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4766 [Define if gcc should always pass --build-id to linker.])
4768 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4772 # In binutils 2.21, GNU ld gained support for new emulations fully
4773 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4774 AC_CACHE_CHECK(linker *_sol2 emulation support,
4775 gcc_cv_ld_sol2_emulation,
4776 [gcc_cv_ld_sol2_emulation=no
4777 if test $in_tree_ld = yes ; then
4778 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4779 "$gcc_cv_gld_minor_version" -ge 21 -o \
4780 "$gcc_cv_gld_major_version" -gt 2 \
4781 && test $in_tree_ld_is_elf = yes; then
4782 gcc_cv_ld_sol2_emulation=yes
4784 elif test x$gcc_cv_ld != x; then
4785 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4786 grep _sol2 > /dev/null; then
4787 gcc_cv_ld_sol2_emulation=yes
4790 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4791 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4792 [Define if your linker supports the *_sol2 emulations.])
4795 AC_CACHE_CHECK(linker --sysroot support,
4797 [gcc_cv_ld_sysroot=no
4798 if test $in_tree_ld = yes ; then
4799 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4800 gcc_cv_ld_sysroot=yes
4802 elif test x$gcc_cv_ld != x; then
4803 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4804 gcc_cv_ld_sysroot=yes
4807 if test x"$gcc_cv_ld_sysroot" = xyes; then
4808 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4809 [Define if your linker supports --sysroot.])
4812 if test x$with_sysroot = x && test x$host = x$target \
4813 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4814 && test "$prefix" != "NONE"; then
4815 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4816 [Define to PREFIX/include if cpp should also search that directory.])
4819 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4820 if test "x$with_headers" != x; then
4821 target_header_dir=$with_headers
4822 elif test "x$with_sysroot" = x; then
4823 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4824 elif test "x$with_build_sysroot" != "x"; then
4825 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4826 elif test "x$with_sysroot" = xyes; then
4827 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4829 target_header_dir="${with_sysroot}${native_system_header_dir}"
4832 target_header_dir=${native_system_header_dir}
4835 # Test for stack protector support in target C library.
4836 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4837 gcc_cv_libc_provides_ssp,
4838 [gcc_cv_libc_provides_ssp=no
4840 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4841 [# glibc 2.4 and later provides __stack_chk_fail and
4842 # either __stack_chk_guard, or TLS access to stack guard canary.
4843 if test -f $target_header_dir/features.h \
4844 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4845 $target_header_dir/features.h > /dev/null; then
4846 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4847 $target_header_dir/features.h > /dev/null; then
4848 gcc_cv_libc_provides_ssp=yes
4849 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4850 $target_header_dir/features.h > /dev/null \
4851 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4852 $target_header_dir/features.h > /dev/null; then
4853 gcc_cv_libc_provides_ssp=yes
4854 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4855 $target_header_dir/features.h > /dev/null && \
4856 test -f $target_header_dir/bits/uClibc_config.h && \
4857 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4858 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4859 gcc_cv_libc_provides_ssp=yes
4861 # all versions of Bionic support stack protector
4862 elif test -f $target_header_dir/sys/cdefs.h \
4863 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4864 $target_header_dir/sys/cdefs.h > /dev/null; then
4865 gcc_cv_libc_provides_ssp=yes
4869 # Avoid complicated tests (see
4870 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4871 # simply assert that glibc does provide this, which is true for all
4872 # realistically usable GNU/Hurd configurations.
4873 gcc_cv_libc_provides_ssp=yes;;
4874 *-*-darwin* | *-*-freebsd*)
4875 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4876 [echo "no __stack_chk_fail on this target"])
4878 *) gcc_cv_libc_provides_ssp=no ;;
4881 if test x$gcc_cv_libc_provides_ssp = xyes; then
4882 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4883 [Define if your target C library provides stack protector support])
4886 # Test for <sys/sdt.h> on the target.
4887 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4888 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4890 if test -f $target_header_dir/sys/sdt.h; then
4892 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4893 [Define if your target C library provides sys/sdt.h])
4895 AC_MSG_RESULT($have_sys_sdt_h)
4897 # Check if TFmode long double should be used by default or not.
4898 # Some glibc targets used DFmode long double, but with glibc 2.4
4899 # and later they can use TFmode.
4901 powerpc*-*-linux* | \
4905 AC_ARG_WITH(long-double-128,
4906 [AS_HELP_STRING([--with-long-double-128],
4907 [use 128-bit long double by default])],
4908 gcc_cv_target_ldbl128="$with_long_double_128",
4909 [[gcc_cv_target_ldbl128=no
4910 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4911 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4912 && gcc_cv_target_ldbl128=yes
4916 if test x$gcc_cv_target_ldbl128 = xyes; then
4917 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4918 [Define if TFmode long double should be the default])
4921 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4922 gcc_cv_target_dl_iterate_phdr=unknown
4924 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4925 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4926 # libdl there, both complicating its use and breaking compatibility
4927 # between Solaris 10 updates.
4928 *-*-solaris2.1[[1-9]]*)
4929 # <link.h> needs both a dl_iterate_phdr declaration and support for
4930 # compilation with largefile support.
4931 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4932 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4933 gcc_cv_target_dl_iterate_phdr=yes
4935 gcc_cv_target_dl_iterate_phdr=no
4939 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4940 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4941 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4942 [Define if your target C library provides the `dl_iterate_phdr' function.])
4944 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4946 # We no longer support different GC mechanisms. Emit an error if
4947 # the user configures with --with-gc.
4949 [AS_HELP_STRING([--with-gc={page,zone}],
4950 [this option is not supported anymore. It used to choose
4951 the garbage collection mechanism to use with the compiler])],
4952 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4955 # Libraries to use on the host. This will normally be set by the top
4956 # level Makefile. Here we simply capture the value for our Makefile.
4957 if test -z "${HOST_LIBS+set}"; then
4962 # Use the system's zlib library.
4964 zlibinc="-I\$(srcdir)/../zlib"
4965 AC_ARG_WITH(system-zlib,
4966 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4973 dnl Very limited version of automake's enable-maintainer-mode
4975 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4976 dnl maintainer-mode is disabled by default
4977 AC_ARG_ENABLE(maintainer-mode,
4978 [AS_HELP_STRING([--enable-maintainer-mode],
4979 [enable make rules and dependencies not useful
4980 (and sometimes confusing) to the casual installer])],
4981 maintainer_mode=$enableval,
4984 AC_MSG_RESULT($maintainer_mode)
4986 if test "$maintainer_mode" = "yes"; then
4993 dnl Whether to prevent multiple front-ends from linking at the same time
4995 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
4996 AC_ARG_ENABLE(link-mutex,
4997 [AS_HELP_STRING([--enable-link-mutex],
4998 [avoid linking multiple front-ends at once to avoid thrashing
4999 on the build machine])],
5000 do_link_mutex=$enableval,
5002 AC_MSG_RESULT($do_link_mutex)
5004 if test "$do_link_mutex" = "yes"; then
5009 AC_SUBST(DO_LINK_MUTEX)
5015 # Make empty files to contain the specs and options for each language.
5016 # Then add #include lines to for a compiler that has specs and/or options.
5022 # These (without "all_") are set in each config-lang.in.
5023 # `language' must be a single word so is spelled singularly.
5026 all_outputs='Makefile'
5027 # List of language makefile fragments.
5029 # Additional files for gengtype
5030 all_gtfiles="$target_gtfiles"
5032 # These are the languages that are set in --enable-languages,
5033 # and are available in the GCC tree.
5034 all_selected_languages=
5036 # Add the language fragments.
5037 # Languages are added via two mechanisms. Some information must be
5038 # recorded in makefile variables, these are defined in config-lang.in.
5039 # We accumulate them and plug them into the main Makefile.
5040 # The other mechanism is a set of hooks for each of the main targets
5041 # like `clean', `install', etc.
5043 language_hooks="Make-hooks"
5045 for lang in ${srcdir}/*/config-lang.in
5048 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5050 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5051 if test "x$lang_alias" = x
5053 echo "$lang doesn't set \$language." 1>&2
5056 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5057 subdirs="$subdirs $subdir"
5059 # $gcc_subdir is where the gcc integration files are to be found
5060 # for a language, both for internal compiler purposes (compiler
5061 # sources implementing front-end to GCC tree converters), and for
5062 # build infrastructure purposes (Make-lang.in, etc.)
5064 # This will be <subdir> (relative to $srcdir) if a line like
5065 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5066 # is found in <langdir>/config-lang.in, and will remain <langdir>
5069 # Except for the language alias (fetched above), the regular
5070 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5071 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5072 # only this and the language alias.
5074 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5075 if [ "$gcc_subdir" = "" ]; then
5076 gcc_subdir="$subdir"
5079 case ",$enable_languages," in
5081 all_selected_languages="$all_selected_languages $lang_alias"
5082 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5083 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5095 . ${srcdir}/$gcc_subdir/config-lang.in
5096 if test "x$language" = x
5098 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5103 case ",$enable_languages," in
5106 for i in $subdir_requires; do
5107 test -f "${srcdir}/$i/config-lang.in" && continue
5115 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5116 if test -f $srcdir/$gcc_subdir/lang.opt; then
5117 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5118 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5120 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5121 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5123 all_languages="$all_languages $language"
5124 all_compilers="$all_compilers $compilers"
5125 all_outputs="$all_outputs $outputs"
5126 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5127 case ",$enable_languages," in
5129 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5131 AC_SUBST(enable_lto)
5138 for language in $all_selected_languages
5140 check_languages="$check_languages check-$language"
5143 # We link each language in with a set of hooks, reached indirectly via
5144 # lang.${target}. Only do so for selected languages.
5148 target_list="all.cross start.encap rest.encap tags \
5149 install-common install-man install-info install-pdf install-html dvi \
5150 pdf html uninstall info man srcextra srcman srcinfo \
5151 mostlyclean clean distclean maintainer-clean install-plugin"
5153 for t in $target_list
5156 for lang in $all_selected_languages
5160 echo "lang.$t: $x" >> Make-hooks
5164 # Option include files
5167 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5168 option_includes="option-includes.mk"
5169 AC_SUBST_FILE(option_includes)
5177 echo "dir ." > .gdbinit
5178 echo "dir ${srcdir}" >> .gdbinit
5179 if test x$gdb_needs_out_file_path = xyes
5181 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5183 if test "x$subdirs" != x; then
5186 echo "dir ${srcdir}/$s" >> .gdbinit
5189 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5190 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5192 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5193 AC_SUBST(gcc_tooldir)
5196 # Find a directory in which to install a shared libgcc.
5198 AC_ARG_ENABLE(version-specific-runtime-libs,
5199 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5200 [specify that runtime libraries should be
5201 installed in a compiler-specific directory])])
5203 # Substitute configuration variables
5206 AC_SUBST(all_compilers)
5207 AC_SUBST(all_gtfiles)
5208 AC_SUBST(all_lang_makefrags)
5209 AC_SUBST(all_languages)
5210 AC_SUBST(all_selected_languages)
5211 AC_SUBST(build_exeext)
5212 AC_SUBST(build_install_headers_dir)
5213 AC_SUBST(build_xm_file_list)
5214 AC_SUBST(build_xm_include_list)
5215 AC_SUBST(build_xm_defines)
5216 AC_SUBST(build_file_translate)
5217 AC_SUBST(check_languages)
5218 AC_SUBST(cpp_install_dir)
5219 AC_SUBST(xmake_file)
5220 AC_SUBST(tmake_file)
5221 AC_SUBST(TM_ENDIAN_CONFIG)
5222 AC_SUBST(TM_MULTILIB_CONFIG)
5223 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5224 AC_SUBST(extra_gcc_objs)
5225 AC_SUBST(user_headers_inc_next_pre)
5226 AC_SUBST(user_headers_inc_next_post)
5227 AC_SUBST(extra_headers_list)
5228 AC_SUBST(extra_objs)
5229 AC_SUBST(extra_programs)
5230 AC_SUBST(float_h_file)
5231 AC_SUBST(gcc_config_arguments)
5232 AC_SUBST(gcc_gxx_include_dir)
5233 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5234 AC_SUBST(host_exeext)
5235 AC_SUBST(host_xm_file_list)
5236 AC_SUBST(host_xm_include_list)
5237 AC_SUBST(host_xm_defines)
5238 AC_SUBST(out_host_hook_obj)
5240 AC_SUBST(lang_opt_files)
5241 AC_SUBST(lang_specs_files)
5242 AC_SUBST(lang_tree_files)
5243 AC_SUBST(local_prefix)
5245 AC_SUBST(objc_boehm_gc)
5247 AC_SUBST(out_object_file)
5248 AC_SUBST(common_out_file)
5249 AC_SUBST(common_out_object_file)
5250 AC_SUBST(tm_file_list)
5251 AC_SUBST(tm_include_list)
5252 AC_SUBST(tm_defines)
5253 AC_SUBST(tm_p_file_list)
5254 AC_SUBST(tm_p_include_list)
5255 AC_SUBST(xm_file_list)
5256 AC_SUBST(xm_include_list)
5257 AC_SUBST(xm_defines)
5258 AC_SUBST(use_gcc_stdint)
5259 AC_SUBST(c_target_objs)
5260 AC_SUBST(cxx_target_objs)
5261 AC_SUBST(fortran_target_objs)
5262 AC_SUBST(target_cpu_default)
5264 AC_SUBST_FILE(language_hooks)
5267 if test x${build} = x${host} ; then
5268 if test x${host} = x${target} ; then
5269 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5271 echo "Links are now set up to build a cross-compiler" 1>&2
5272 echo " from ${host} to ${target}." 1>&2
5275 if test x${host} = x${target} ; then
5276 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5277 echo " for ${target}." 1>&2
5279 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5280 echo " from ${host} to ${target}." 1>&2
5284 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5285 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5287 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5288 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5290 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5291 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5292 if test "x${CLOOGLIBS}" != "x" ; then
5293 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5296 # Check for plugin support
5297 AC_ARG_ENABLE(plugin,
5298 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5299 enable_plugin=$enableval,
5300 enable_plugin=yes; default_plugin=yes)
5306 if test x$build = x$host; then
5307 export_sym_check="nm${exeext} -g"
5308 elif test x$host = x$target; then
5309 export_sym_check="$gcc_cv_nm -g"
5315 if test x$build = x$host; then
5316 export_sym_check="objdump${exeext} -T"
5317 elif test x$host = x$target; then
5318 export_sym_check="$gcc_cv_objdump -T"
5325 if test x"$enable_plugin" = x"yes"; then
5327 AC_MSG_CHECKING([for exported symbols])
5328 if test "x$export_sym_check" != x; then
5329 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5330 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5331 if $export_sym_check conftest | grep foobar > /dev/null; then
5332 : # No need to use a flag
5333 AC_MSG_RESULT([yes])
5335 AC_MSG_RESULT([yes])
5336 AC_MSG_CHECKING([for -rdynamic])
5337 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5338 if $export_sym_check conftest | grep foobar > /dev/null; then
5340 pluginlibs="-rdynamic"
5345 AC_MSG_RESULT([$plugin_rdynamic])
5348 AC_MSG_RESULT([unable to check])
5353 AC_SEARCH_LIBS([dlopen], [dl])
5354 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5355 pluginlibs="$pluginlibs -ldl"
5359 # Check that we can build shared objects with -fPIC -shared
5360 saved_LDFLAGS="$LDFLAGS"
5361 saved_CFLAGS="$CFLAGS"
5364 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5365 CFLAGS="$CFLAGS -fPIC"
5366 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5369 CFLAGS="$CFLAGS -fPIC"
5370 LDFLAGS="$LDFLAGS -fPIC -shared"
5373 AC_MSG_CHECKING([for -fPIC -shared])
5375 [extern int X;],[return X == 0;],
5376 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5377 [AC_MSG_RESULT([no]); have_pic_shared=no])
5378 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5382 LDFLAGS="$saved_LDFLAGS"
5383 CFLAGS="$saved_CFLAGS"
5385 # If plugin support had been requested but not available, fail.
5386 if test x"$enable_plugin" = x"no" ; then
5387 if test x"$default_plugin" != x"yes"; then
5389 Building GCC with plugin support requires a host that supports
5390 -fPIC, -shared, -ldl and -rdynamic.])
5395 AC_SUBST(pluginlibs)
5396 AC_SUBST(enable_plugin)
5397 if test x"$enable_plugin" = x"yes"; then
5398 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5402 # Enable --enable-host-shared
5403 AC_ARG_ENABLE(host-shared,
5404 [AS_HELP_STRING([--enable-host-shared],
5405 [build host code as shared libraries])],
5406 [PICFLAG=-fPIC], [PICFLAG=])
5407 AC_SUBST(enable_host_shared)
5411 AC_ARG_ENABLE(libquadmath-support,
5412 [AS_HELP_STRING([--disable-libquadmath-support],
5413 [disable libquadmath support for Fortran])],
5414 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5415 ENABLE_LIBQUADMATH_SUPPORT=yes)
5416 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5417 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5418 [Define to 1 to enable libquadmath support])
5422 # Specify what hash style to use by default.
5423 AC_ARG_WITH([linker-hash-style],
5424 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5425 [specify the linker hash style])],
5426 [case x"$withval" in
5428 LINKER_HASH_STYLE=sysv
5431 LINKER_HASH_STYLE=gnu
5434 LINKER_HASH_STYLE=both
5437 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5440 [LINKER_HASH_STYLE=''])
5441 if test x"${LINKER_HASH_STYLE}" != x; then
5442 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5443 [The linker hash style])
5446 # Configure the subdirectories
5447 # AC_CONFIG_SUBDIRS($subdirs)
5449 # Create the Makefile
5450 # and configure language subdirectories
5451 AC_CONFIG_FILES($all_outputs)
5453 AC_CONFIG_COMMANDS([default],
5455 case ${CONFIG_HEADERS} in
5456 *auto-host.h:config.in*)
5459 # Make sure all the subdirs exist.
5460 for d in $subdirs doc build common c-family
5462 test -d $d || mkdir $d
5465 [subdirs='$subdirs'])