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
283 ACX_PROG_GNAT([-I"$srcdir"/ada])
285 # autoconf is lame and doesn't give us any substitution variable for this.
286 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
287 NO_MINUS_C_MINUS_O=yes
289 OUTPUT_OPTION='-o $@'
291 AC_SUBST(NO_MINUS_C_MINUS_O)
292 AC_SUBST(OUTPUT_OPTION)
294 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
295 # optimizations to be activated explicitly by the toplevel.
298 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
299 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
304 # Determine PICFLAG for target gnatlib.
305 GCC_PICFLAG_FOR_TARGET
306 AC_SUBST(PICFLAG_FOR_TARGET)
308 # -------------------------
309 # Check C compiler features
310 # -------------------------
312 AC_USE_SYSTEM_EXTENSIONS
318 # sizeof(char) is 1 by definition.
319 AC_CHECK_SIZEOF(void *)
320 AC_CHECK_SIZEOF(short)
322 AC_CHECK_SIZEOF(long)
323 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
324 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
327 # ---------------------
328 # Warnings and checking
329 # ---------------------
331 # Check $CC warning features (if it's GCC).
332 # We want to use -pedantic, but we don't want warnings about
336 # * C++11 narrowing conversions in { }
337 # So, we only use -pedantic if we can disable those warnings.
339 ACX_PROG_CC_WARNING_OPTS(
340 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
341 ACX_PROG_CC_WARNING_OPTS(
342 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
346 ACX_PROG_CC_WARNING_OPTS(
347 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
348 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
349 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
350 [-Wno-overlength-strings])), [strict_warn])
351 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
353 # The above macros do nothing if the compiler is not GCC. However, the
354 # Makefile has more goo to add other flags, so these variables are used
355 # to enable warnings only for GCC.
358 if test "x$GCC" = "xyes"; then
359 warn_cflags='$(GCC_WARN_CFLAGS)'
360 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
362 AC_SUBST(warn_cflags)
363 AC_SUBST(warn_cxxflags)
365 # Disable exceptions and RTTI if building with g++
366 ACX_PROG_CC_WARNING_OPTS(
367 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
370 # Enable expensive internal checks
372 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
376 AC_ARG_ENABLE(checking,
377 [AS_HELP_STRING([[--enable-checking[=LIST]]],
378 [enable expensive run-time checks. With LIST,
379 enable only specific categories of checks.
380 Categories are: yes,no,all,none,release.
381 Flags are: assert,df,fold,gc,gcac,gimple,misc,
382 rtlflag,rtl,runtime,tree,valgrind,types])],
383 [ac_checking_flags="${enableval}"],[
384 # Determine the default checks.
385 if test x$is_release = x ; then
386 ac_checking_flags=yes
388 ac_checking_flags=release
390 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
391 for check in release $ac_checking_flags
394 # these set all the flags to specific states
395 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
396 ac_fold_checking= ; ac_gc_checking=1 ;
397 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
398 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
399 ac_tree_checking=1 ; ac_valgrind_checking= ;
400 ac_types_checking=1 ;;
401 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
402 ac_fold_checking= ; ac_gc_checking= ;
403 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
404 ac_rtlflag_checking= ; ac_runtime_checking= ;
405 ac_tree_checking= ; ac_valgrind_checking= ;
406 ac_types_checking= ;;
407 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
408 ac_fold_checking=1 ; ac_gc_checking=1 ;
409 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
410 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
411 ac_tree_checking=1 ; ac_valgrind_checking= ;
412 ac_types_checking=1 ;;
413 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
414 ac_fold_checking= ; ac_gc_checking= ;
415 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
416 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
417 ac_tree_checking= ; ac_valgrind_checking= ;
418 ac_types_checking= ;;
419 # these enable particular checks
420 assert) ac_assert_checking=1 ;;
421 df) ac_df_checking=1 ;;
422 fold) ac_fold_checking=1 ;;
423 gc) ac_gc_checking=1 ;;
424 gcac) ac_gc_always_collect=1 ;;
425 gimple) ac_gimple_checking=1 ;;
426 misc) ac_checking=1 ;;
427 rtl) ac_rtl_checking=1 ;;
428 rtlflag) ac_rtlflag_checking=1 ;;
429 runtime) ac_runtime_checking=1 ;;
430 tree) ac_tree_checking=1 ;;
431 types) ac_types_checking=1 ;;
432 valgrind) ac_valgrind_checking=1 ;;
433 *) AC_MSG_ERROR(unknown check category $check) ;;
439 if test x$ac_checking != x ; then
440 AC_DEFINE(ENABLE_CHECKING, 1,
441 [Define if you want more run-time sanity checks. This one gets a grab
442 bag of miscellaneous but relatively cheap checks.])
443 nocommon_flag=-fno-common
445 AC_SUBST(nocommon_flag)
446 if test x$ac_df_checking != x ; then
447 AC_DEFINE(ENABLE_DF_CHECKING, 1,
448 [Define if you want more run-time sanity checks for dataflow.])
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_gimple_checking != x ; then
455 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
456 [Define if you want operations on GIMPLE (the basic data structure of
457 the high-level optimizers) to be checked for dynamic type safety at
458 runtime. This is moderately expensive.])
460 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
461 if test x$ac_runtime_checking != x ; then
462 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
463 [Define if you want runtime assertions enabled. This is a cheap check.])
465 if test x$ac_tree_checking != x ; then
466 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
467 [Define if you want all operations on trees (the basic data
468 structure of the front ends) to be checked for dynamic type safety
469 at runtime. This is moderately expensive. The tree browser debugging
470 routines will also be enabled by this option.
472 TREEBROWSER=tree-browser.o
475 if test x$ac_types_checking != x ; then
476 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
477 [Define if you want all gimple types to be verified after gimplifiation.
481 AC_SUBST(TREEBROWSER)
482 AC_SUBST(TREECHECKING)
483 if test x$ac_rtl_checking != x ; then
484 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
485 [Define if you want all operations on RTL (the basic data structure
486 of the optimizer and back end) to be checked for dynamic type safety
487 at runtime. This is quite expensive.])
489 if test x$ac_rtlflag_checking != x ; then
490 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
491 [Define if you want RTL flag accesses to be checked against the RTL
492 codes that are supported for each access macro. This is relatively
495 if test x$ac_gc_checking != x ; then
496 AC_DEFINE(ENABLE_GC_CHECKING, 1,
497 [Define if you want the garbage collector to do object poisoning and
498 other memory allocation checks. This is quite expensive.])
500 if test x$ac_gc_always_collect != x ; then
501 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
502 [Define if you want the garbage collector to operate in maximally
503 paranoid mode, validating the entire heap and collecting garbage at
504 every opportunity. This is extremely expensive.])
506 if test x$ac_fold_checking != x ; then
507 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
508 [Define if you want fold checked that it never destructs its argument.
509 This is quite expensive.])
511 valgrind_path_defines=
514 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
515 dnl # an if statement. This was the source of very frustrating bugs
516 dnl # in converting to autoconf 2.5x!
517 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
519 if test x$ac_valgrind_checking != x ; then
520 # It is certainly possible that there's valgrind but no valgrind.h.
521 # GCC relies on making annotations so we must have both.
522 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
523 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
524 [[#include <valgrind/memcheck.h>
525 #ifndef VALGRIND_DISCARD
526 #error VALGRIND_DISCARD not defined
528 [gcc_cv_header_valgrind_memcheck_h=yes],
529 [gcc_cv_header_valgrind_memcheck_h=no])
530 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
531 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
532 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
533 [[#include <memcheck.h>
534 #ifndef VALGRIND_DISCARD
535 #error VALGRIND_DISCARD not defined
537 [gcc_cv_header_memcheck_h=yes],
538 [gcc_cv_header_memcheck_h=no])
539 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
540 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
541 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
542 if test "x$valgrind_path" = "x" \
543 || (test $have_valgrind_h = no \
544 && test $gcc_cv_header_memcheck_h = no \
545 && test $gcc_cv_header_valgrind_memcheck_h = no); then
546 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
548 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
549 valgrind_command="$valgrind_path -q"
550 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
551 [Define if you want to run subprograms and generated programs
552 through valgrind (a memory checker). This is extremely expensive.])
553 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
554 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
555 [Define if valgrind's valgrind/memcheck.h header is installed.])
557 if test $gcc_cv_header_memcheck_h = yes; then
558 AC_DEFINE(HAVE_MEMCHECK_H, 1,
559 [Define if valgrind's memcheck.h header is installed.])
562 AC_SUBST(valgrind_path_defines)
563 AC_SUBST(valgrind_command)
565 # Enable code coverage collection
566 AC_ARG_ENABLE(coverage,
567 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
568 [enable compiler's code coverage collection.
569 Use to measure compiler performance and locate
570 unused parts of the compiler. With LEVEL, specify
571 optimization. Values are opt, noopt,
573 [case "${enableval}" in
575 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
578 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
581 # a.k.a. --disable-coverage
585 AC_MSG_ERROR(unknown coverage setting $enableval)
589 AC_SUBST(coverage_flags)
591 AC_ARG_ENABLE(gather-detailed-mem-stats,
592 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
593 [enable detailed memory allocation stats gathering])], [],
594 [enable_gather_detailed_mem_stats=no])
595 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
596 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
597 [Define to enable detailed memory allocation stats gathering.])
599 # -------------------------------
600 # Miscenalleous configure options
601 # -------------------------------
605 [AS_HELP_STRING([--with-stabs],
606 [arrange to use stabs instead of host debug format])],
610 # Determine whether or not multilibs are enabled.
611 AC_ARG_ENABLE(multilib,
612 [AS_HELP_STRING([--enable-multilib],
613 [enable library support for multiple ABIs])],
614 [], [enable_multilib=yes])
615 AC_SUBST(enable_multilib)
617 # Determine whether or not multiarch is enabled.
618 AC_ARG_ENABLE(multiarch,
619 [AS_HELP_STRING([--enable-multiarch],
620 [enable support for multiarch paths])],
621 [case "${enableval}" in
622 yes|no|auto) enable_multiarch=$enableval;;
623 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
624 esac], [enable_multiarch=auto])
625 if test x${enable_multiarch} = xauto; then
626 if test x${with_native_system_header_dir} != x; then
627 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
630 if test x$host != x$target && test "x$with_sysroot" = x; then
631 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
635 AC_MSG_CHECKING(for multiarch configuration)
636 AC_SUBST(enable_multiarch)
637 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
639 # needed for setting the multiarch name for soft-float/hard-float ABIs
643 # Enable __cxa_atexit for C++.
644 AC_ARG_ENABLE(__cxa_atexit,
645 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
648 # Enable C extension for decimal float if target supports it.
649 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
651 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
652 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
653 [Define to 1 to enable decimal float extension to C.])
655 # Use default_decimal_float for dependency.
656 enable_decimal_float=$default_decimal_float
658 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
659 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
660 [Define to 1 to specify that we are using the BID decimal floating
661 point format instead of DPD])
663 # Enable C extension for fixed-point arithmetic.
664 AC_ARG_ENABLE(fixed-point,
665 [AS_HELP_STRING([--enable-fixed-point],
666 [enable fixed-point arithmetic extension to C])],
671 enable_fixed_point=yes
675 enable_fixed_point=yes
678 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
679 enable_fixed_point=no
683 AC_SUBST(enable_fixed_point)
685 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
686 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
687 [Define to 1 to enable fixed-point arithmetic extension to C.])
690 # Pass with no value to take the default
691 # Pass with a value to specify a thread package
692 AC_ARG_ENABLE(threads,
693 [AS_HELP_STRING([[--enable-threads[=LIB]]],
694 [enable thread usage for target GCC,
695 using LIB thread package])],,
699 [AS_HELP_STRING([--enable-tls],
700 [enable or disable generation of tls code
701 overriding the assembler check for tls support])],
705 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
706 Valid choices are 'yes' and 'no'.]) ;;
710 AC_ARG_ENABLE(objc-gc,
711 [AS_HELP_STRING([--enable-objc-gc],
712 [enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime])],
714 if test x$enable_objc_gc = xno; then
722 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH([native-system-header-dir],
746 [ --with-native-system-header-dir=dir
747 use dir as the directory to look for standard
748 system header files in. Defaults to /usr/include.],
750 case ${with_native_system_header_dir} in
751 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
752 /* | [[A-Za-z]]:[[\\/]]*) ;;
753 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
755 configured_native_system_header_dir="${withval}"
756 ], [configured_native_system_header_dir=])
758 AC_ARG_WITH(build-sysroot,
759 [AS_HELP_STRING([--with-build-sysroot=sysroot],
760 [use sysroot as the system root during the build])],
761 [if test x"$withval" != x ; then
762 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
764 [SYSROOT_CFLAGS_FOR_TARGET=])
765 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
767 AC_ARG_WITH([runtime-root-prefix],
768 [ --with-runtime-root-prefix=prefix
769 prepend prefix to paths used by the compiler to
770 name the dynamic linker and other files used at
771 runtime. Defaults to empty (no prefix).],
773 case ${with_runtime_root_prefix} in
774 yes|no) AC_MSG_ERROR([bad value ${withval} given for runtime root prefix]) ;;
776 *) AC_MSG_ERROR([${withval} should be an absolute directory]) ;;
778 RUNTIME_ROOT_PREFIX_DEFINE="-DRUNTIME_ROOT_PREFIX=\\\"${withval}\\\""
779 ], [RUNTIME_ROOT_PREFIX_DEFINE=""])
780 AC_SUBST(RUNTIME_ROOT_PREFIX_DEFINE)
782 if test "x$prefix" = xNONE; then
783 test_prefix=/usr/local
787 if test "x$exec_prefix" = xNONE; then
788 test_exec_prefix=$test_prefix
790 test_exec_prefix=$exec_prefix
794 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
795 [search for usr/lib, usr/include, et al, within DIR])],
797 case ${with_sysroot} in
798 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
799 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
802 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
803 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
805 case ${TARGET_SYSTEM_ROOT} in
806 "${test_prefix}"|"${test_prefix}/"*|\
807 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
808 '${prefix}'|'${prefix}/'*|\
809 '${exec_prefix}'|'${exec_prefix}/'*)
810 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
811 TARGET_SYSTEM_ROOT_DEFINE="$t"
816 TARGET_SYSTEM_ROOT_DEFINE=
817 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
819 AC_SUBST(TARGET_SYSTEM_ROOT)
820 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
821 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
824 [AS_HELP_STRING([--with-specs=SPECS],
825 [add SPECS to driver command-line processing])],
826 [CONFIGURE_SPECS=$withval],
829 AC_SUBST(CONFIGURE_SPECS)
831 ACX_PKGVERSION([GCC])
832 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
834 # Sanity check enable_languages in case someone does not run the toplevel
835 # configure # script.
836 AC_ARG_ENABLE(languages,
837 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
838 [case ,${enable_languages}, in
840 # go safe -- we cannot be much sure without the toplevel
842 # analysis of which target libs are present and usable
846 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
851 enable_languages=c,${enable_languages}
854 [enable_languages=c])
856 AC_ARG_WITH(multilib-list,
857 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
859 with_multilib_list=default)
861 # -------------------------
862 # Checks for other programs
863 # -------------------------
867 # Find some useful tools
869 # We need awk to create options.c and options.h.
870 # Bail out if it's missing.
872 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
879 AC_SUBST(ranlib_flags)
883 # See if cmp has --ignore-initial.
884 gcc_AC_PROG_CMP_IGNORE_INITIAL
886 # See if we have the mktemp command.
887 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
889 # See if makeinfo has been installed and is modern enough
890 # that we can use it.
891 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
892 [GNU texinfo.* \([0-9][0-9.]*\)],
893 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
894 if test $gcc_cv_prog_makeinfo_modern = no; then
896 *** Makeinfo is missing or too old.
897 *** Info documentation will not be built.])
904 # Is pod2man recent enough to regenerate manpages?
905 AC_MSG_CHECKING([for recent Pod::Man])
906 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
908 GENERATED_MANPAGES=generated-manpages
913 AC_SUBST(GENERATED_MANPAGES)
915 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
918 dnl Don't use AC_PROG_LEX; we insist on flex.
919 dnl LEXLIB is not useful in gcc.
920 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
923 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
925 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
926 # check for build == host before using them.
929 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
930 && test -d ../binutils ; then
931 NM='${objdir}/../binutils/nm-new'
933 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
937 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
938 && test -d ../binutils ; then
939 AR='${objdir}/../binutils/ar'
941 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
945 # --------------------
946 # Checks for C headers
947 # --------------------
949 # Need to reject headers which give warnings, so that the -Werror bootstrap
950 # works later. *sigh* This needs to come before all header checks.
957 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
958 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
959 sys/resource.h sys/param.h sys/times.h sys/stat.h \
960 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
962 # Check for thread headers.
963 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
964 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
966 # These tests can't be done till we know if we have limits.h.
970 # ----------------------
971 # Checks for C++ headers
972 # ----------------------
974 dnl Autoconf will give an error in the configure script if there is no
975 dnl C++ preprocessor. Hack to prevent that.
976 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
978 m4_popdef([AC_MSG_ERROR])[]dnl
982 AC_CHECK_HEADERS(unordered_map)
983 AC_CHECK_HEADERS(tr1/unordered_map)
984 AC_CHECK_HEADERS(ext/hash_map)
993 # These libraries may be used by collect2.
994 # We may need a special search path to get them linked.
995 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
997 for libs in '' -lld -lmld \
998 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
999 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1002 AC_TRY_LINK_FUNC(ldopen,
1003 [gcc_cv_collect2_libs="$libs"; break])
1006 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1007 case $gcc_cv_collect2_libs in
1009 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1011 AC_SUBST(COLLECT2_LIBS)
1013 # When building Ada code on Alpha, we need exc_resume which is usually in
1014 # -lexc. So test for it.
1017 AC_SEARCH_LIBS(exc_resume, exc)
1020 AC_SUBST(GNAT_LIBEXC)
1022 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1025 AC_SEARCH_LIBS(kstat_open, kstat)
1026 EXTRA_GCC_LIBS="$LIBS"
1028 AC_SUBST(EXTRA_GCC_LIBS)
1030 # Some systems put ldexp and frexp in libm instead of libc; assume
1031 # they're both in the same place. jcf-dump needs them.
1034 AC_SEARCH_LIBS(ldexp, m)
1039 # Use <inttypes.h> only if it exists,
1040 # doesn't clash with <sys/types.h>, and declares intmax_t.
1041 AC_MSG_CHECKING(for inttypes.h)
1042 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1043 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1044 [[#include <sys/types.h>
1045 #include <inttypes.h>]],
1046 [[intmax_t i = -1;]])],
1047 [gcc_cv_header_inttypes_h=yes],
1048 [gcc_cv_header_inttypes_h=no])])
1049 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1050 if test $gcc_cv_header_inttypes_h = yes; then
1051 AC_DEFINE(HAVE_INTTYPES_H, 1,
1052 [Define if you have a working <inttypes.h> header file.])
1055 dnl Disabled until we have a complete test for buggy enum bitfields.
1056 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1058 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1059 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1060 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1061 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1062 putchar_unlocked putc_unlocked)
1063 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1064 sysconf strsignal getrusage nl_langinfo \
1065 gettimeofday mbstowcs wcswidth mmap setlocale \
1066 gcc_UNLOCKED_FUNCS madvise)
1068 if test x$ac_cv_func_mbstowcs = xyes; then
1069 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1070 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1076 [gcc_cv_func_mbstowcs_works=yes],
1077 [gcc_cv_func_mbstowcs_works=no],
1078 [gcc_cv_func_mbstowcs_works=yes])])
1079 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1080 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1081 [Define this macro if mbstowcs does not crash when its
1082 first argument is NULL.])
1086 AC_CHECK_TYPE(ssize_t, int)
1087 AC_CHECK_TYPE(caddr_t, char *)
1089 GCC_AC_FUNC_MMAP_BLACKLIST
1093 # Under VMS, vfork works very differently than on Unix. The standard test
1094 # won't work, and it isn't easily adaptable. It makes more sense to
1096 ac_cv_func_vfork_works=yes
1101 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1102 # iconv() prototype.
1107 # Until we have in-tree GNU iconv:
1109 AC_SUBST(LIBICONV_DEP)
1115 # We will need to find libiberty.h and ansidecl.h
1116 saved_CFLAGS="$CFLAGS"
1117 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1118 saved_CXXFLAGS="$CXXFLAGS"
1119 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1120 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1121 strsignal strstr stpcpy strverscmp \
1122 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1123 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1124 #include "ansidecl.h"
1125 #include "system.h"])
1127 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1128 #include "ansidecl.h"
1130 #ifdef HAVE_SYS_RESOURCE_H
1131 #include <sys/resource.h>
1135 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1136 #include "ansidecl.h"
1138 #ifdef HAVE_SYS_RESOURCE_H
1139 #include <sys/resource.h>
1141 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1142 [Define to `long' if <sys/resource.h> doesn't define.])])
1144 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1145 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1146 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1147 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1148 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1149 #include "ansidecl.h"
1158 gcc_AC_CHECK_DECLS(times, , ,[
1159 #include "ansidecl.h"
1161 #ifdef HAVE_SYS_TIMES_H
1162 #include <sys/times.h>
1166 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1167 #include "ansidecl.h"
1172 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1175 gcc_AC_CHECK_DECLS(madvise, , ,[
1176 #include "ansidecl.h"
1181 # More time-related stuff.
1182 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1184 #include "ansidecl.h"
1186 #ifdef HAVE_SYS_TIMES_H
1187 #include <sys/times.h>
1189 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1190 if test $ac_cv_struct_tms = yes; then
1191 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1192 [Define if <sys/times.h> defines struct tms.])
1195 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1196 # revisit after autoconf 2.50.
1197 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1198 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1199 #include "ansidecl.h"
1201 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1202 if test $gcc_cv_type_clock_t = yes; then
1203 AC_DEFINE(HAVE_CLOCK_T, 1,
1204 [Define if <time.h> defines clock_t.])
1207 # Check if F_SETLKW is supported by fcntl.
1208 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1209 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1210 #include <fcntl.h>]], [[
1216 return fcntl (1, F_SETLKW, &fl);]])],
1217 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1218 if test $ac_cv_f_setlkw = yes; then
1219 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1220 [Define if F_SETLKW supported by fcntl.])
1223 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1224 CFLAGS="$saved_CFLAGS"
1225 CXXFLAGS="$saved_CXXFLAGS"
1227 # mkdir takes a single argument on some systems.
1228 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1236 # With Setjmp/Longjmp based exception handling.
1237 AC_ARG_ENABLE(sjlj-exceptions,
1238 [AS_HELP_STRING([--enable-sjlj-exceptions],
1239 [arrange to use setjmp/longjmp exception handling])],
1242 if test $enableval != yes; then
1243 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1248 force_sjlj_exceptions=yes],
1251 force_sjlj_exceptions=yes
1255 force_sjlj_exceptions=no
1258 if test $force_sjlj_exceptions = yes; then
1259 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1260 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1261 [Define 0/1 to force the choice for exception handling model.])
1264 # --------------------------------------------------------
1265 # Build, host, and target specific configuration fragments
1266 # --------------------------------------------------------
1268 # Collect build-machine-specific information.
1269 . ${srcdir}/config.build
1271 # Collect host-machine-specific information.
1272 . ${srcdir}/config.host
1276 # Collect target-machine-specific information.
1277 . ${srcdir}/config.gcc
1279 extra_objs="${host_extra_objs} ${extra_objs}"
1280 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1282 # Default the target-machine variables that were not explicitly set.
1283 if test x"$tm_file" = x
1284 then tm_file=$cpu_type/$cpu_type.h; fi
1286 if test x"$extra_headers" = x
1287 then extra_headers=; fi
1289 if test x$md_file = x
1290 then md_file=$cpu_type/$cpu_type.md; fi
1292 if test x$out_file = x
1293 then out_file=$cpu_type/$cpu_type.c; fi
1295 if test x"$tmake_file" = x
1296 then tmake_file=$cpu_type/t-$cpu_type
1299 # Support --enable-initfini-array.
1300 if test x$enable_initfini_array != xno; then
1301 tm_file="${tm_file} initfini-array.h"
1304 if test x"$dwarf2" = xyes
1305 then tm_file="$tm_file tm-dwarf2.h"
1308 # Say what files are being used for the output code and MD file.
1309 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1310 echo "Using \`$srcdir/config/$md_file' as machine description file."
1312 # If any of the xm_file variables contain nonexistent files, warn
1313 # about them and drop them.
1316 for x in $build_xm_file; do
1317 if test -f $srcdir/config/$x
1319 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1325 for x in $host_xm_file; do
1326 if test -f $srcdir/config/$x
1328 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1334 for x in $xm_file; do
1335 if test -f $srcdir/config/$x
1337 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1343 for f in $tm_file; do
1346 if test $count = ax; then
1347 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1349 echo "Using the following target machine macro files:"
1350 for f in $tm_file; do
1351 echo " $srcdir/config/$f"
1355 if test x$need_64bit_hwint = xyes; then
1356 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1357 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1360 if test x$use_long_long_for_widest_fast_int = xyes; then
1361 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1362 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1363 efficiently supported by the host hardware.])
1366 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1367 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1369 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1370 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1373 for f in $host_xm_file; do
1376 if test $count = a; then
1378 elif test $count = ax; then
1379 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1381 echo "Using the following host machine macro files:"
1382 for f in $host_xm_file; do
1383 echo " $srcdir/config/$f"
1386 echo "Using ${out_host_hook_obj} for host machine hooks."
1388 if test "$host_xm_file" != "$build_xm_file"; then
1390 for f in $build_xm_file; do
1393 if test $count = a; then
1395 elif test $count = ax; then
1396 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1398 echo "Using the following build machine macro files:"
1399 for f in $build_xm_file; do
1400 echo " $srcdir/config/$f"
1405 if test -n "$configured_native_system_header_dir"; then
1406 native_system_header_dir=$configured_native_system_header_dir
1408 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1409 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1413 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1414 gcc_cv_mcontext_underscores,
1416 #include <sys/cdefs.h>
1417 #include <sys/signal.h>
1418 #include <ucontext.h>
1419 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1421 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1422 if test $gcc_cv_mcontext_underscores = yes; then
1423 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1424 [mcontext_t fields start with __])
1433 # Check if a valid thread package
1434 case ${enable_threads} in
1437 target_thread_file='single'
1441 target_thread_file='single'
1443 aix | dce | lynx | mipssde | posix | rtems | \
1444 single | tpf | vxworks | win32)
1445 target_thread_file=${enable_threads}
1448 echo "${enable_threads} is an unknown thread package" 1>&2
1453 if test x${thread_file} = x; then
1454 # No thread file set by target-specific clauses in config.gcc,
1455 # so use file chosen by default logic above
1456 thread_file=${target_thread_file}
1464 if test x$enable___cxa_atexit = xyes || \
1465 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1466 if test x$host = x$target; then
1468 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1469 # keyed to flag_use_cxa_atexit
1477 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1478 [echo "__cxa_atexit can't be enabled on this target"])
1482 # We can't check for __cxa_atexit when building a cross, so assume
1486 if test x$use_cxa_atexit = xyes; then
1487 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1488 [Define if you want to use __cxa_atexit, rather than atexit, to
1489 register C++ destructors for local statics and global objects.
1490 This is essential for fully standards-compliant handling of
1491 destructors, but requires __cxa_atexit in libc.])
1495 # Look for a file containing extra machine modes.
1496 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1497 extra_modes_file='$(srcdir)'/config/${extra_modes}
1498 AC_SUBST(extra_modes_file)
1499 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1500 [Define to the name of a file containing a list of extra machine modes
1501 for this architecture.])
1504 # Convert extra_options into a form suitable for Makefile use.
1507 for f in $extra_options; do
1508 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1509 all_opt_files="$all_opt_files $srcdir/config/$f"
1511 AC_SUBST(extra_opt_files)
1513 # auto-host.h is the file containing items generated by autoconf and is
1514 # the first file included by config.h.
1515 # If host=build, it is correct to have bconfig include auto-host.h
1516 # as well. If host!=build, we are in error and need to do more
1517 # work to find out the build config parameters.
1518 if test x$host = x$build
1520 build_auto=auto-host.h
1522 # We create a subdir, then run autoconf in the subdir.
1523 # To prevent recursion we set host and build for the new
1524 # invocation of configure to the build for this invocation
1531 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1532 *) realsrcdir=../${srcdir};;
1534 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1535 LDFLAGS="${LDFLAGS_FOR_BUILD}" GMPINC="" \
1536 ${realsrcdir}/configure \
1537 --enable-languages=${enable_languages-all} \
1538 --target=$target_alias --host=$build_alias --build=$build_alias
1540 # We just finished tests for the build machine, so rename
1541 # the file auto-build.h in the gcc directory.
1542 mv auto-host.h ../auto-build.h
1545 build_auto=auto-build.h
1547 AC_SUBST(build_subdir)
1549 tm_file="${tm_file} defaults.h"
1550 tm_p_file="${tm_p_file} tm-preds.h"
1551 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1552 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1553 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1554 # put this back in temporarily.
1555 xm_file="auto-host.h ansidecl.h ${xm_file}"
1562 # Compile in configure arguments.
1563 if test -f configargs.h ; then
1564 # Being re-configured.
1565 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1566 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1568 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1571 # Double all backslashes and backslash all quotes to turn
1572 # gcc_config_arguments into a C string.
1573 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1574 $gcc_config_arguments
1576 gcc_config_arguments_str=`cat conftest.out`
1579 cat > configargs.h <<EOF
1580 /* Generated automatically. */
1581 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1582 static const char thread_model[] = "$thread_file";
1584 static const struct {
1585 const char *name, *value;
1586 } configure_default_options[] = $configure_default_options;
1591 gcc_BASEVER=`cat $srcdir/BASE-VER`
1592 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1593 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1594 if test -f $srcdir/REVISION ; then
1595 gcc_REVISION=`cat $srcdir/REVISION`
1599 cat > plugin-version.h <<EOF
1600 #include "configargs.h"
1602 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1603 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1604 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1605 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1607 static char basever[] = "$gcc_BASEVER";
1608 static char datestamp[] = "$gcc_DATESTAMP";
1609 static char devphase[] = "$gcc_DEVPHASE";
1610 static char revision[] = "$gcc_REVISION";
1612 /* FIXME plugins: We should make the version information more precise.
1613 One way to do is to add a checksum. */
1615 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1617 configuration_arguments};
1621 # Internationalization
1622 ZW_GNU_GETTEXT_SISTER_DIR
1624 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1625 # -liconv on the link line twice.
1626 case "$LIBINTL" in *$LIBICONV*)
1630 AC_ARG_ENABLE(secureplt,
1631 [AS_HELP_STRING([--enable-secureplt],
1632 [enable -msecure-plt by default for PowerPC])],
1635 AC_ARG_ENABLE(leading-mingw64-underscores,
1636 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1637 [enable leading underscores on 64 bit mingw targets]),
1639 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1640 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1641 [Define if we should use leading underscore on 64 bit mingw targets])])
1644 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1647 AC_ARG_ENABLE(frame-pointer,
1648 [AS_HELP_STRING([--enable-frame-pointer],
1649 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1652 linux* | darwin[[8912]]*)
1653 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1655 enable_frame_pointer=no
1658 enable_frame_pointer=yes
1663 # Windows32 Registry support for specifying GCC installation paths.
1664 AC_ARG_ENABLE(win32-registry,
1665 [AS_HELP_STRING([--disable-win32-registry],
1666 [disable lookup of installation paths in the
1667 Registry on Windows hosts])
1668 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1669 AS_HELP_STRING([--enable-win32-registry=KEY],
1670 [use KEY instead of GCC version as the last portion
1671 of the registry key])],,)
1674 win32 | pe | cygwin* | mingw32* | uwin*)
1675 if test "x$enable_win32_registry" != xno; then
1676 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1679 if test "x$enable_win32_registry" != xno; then
1680 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1681 [Define to 1 if installation paths should be looked up in the Windows
1682 Registry. Ignored on non-Windows hosts.])
1684 if test "x$enable_win32_registry" != xyes \
1685 && test "x$enable_win32_registry" != x; then
1686 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1687 [Define to be the last component of the Windows registry key under which
1688 to look for installation paths. The full key used will be
1689 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1690 The default is the GCC version number.])
1696 # Get an absolute path to the GCC top-level source directory
1697 holddir=`${PWDCMD-pwd}`
1699 topdir=`${PWDCMD-pwd}`
1702 # Conditionalize the makefile for this host machine.
1704 for f in ${host_xmake_file}
1706 if test -f ${srcdir}/config/$f
1708 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1712 # Conditionalize the makefile for this target machine.
1714 for f in ${tmake_file}
1716 if test -f ${srcdir}/config/$f
1718 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1721 tmake_file="${tmake_file_}"
1723 out_object_file=`basename $out_file .c`.o
1724 common_out_object_file=`basename $common_out_file .c`.o
1726 tm_file_list="options.h"
1727 tm_include_list="options.h insn-constants.h"
1728 for f in $tm_file; do
1731 f=`echo $f | sed 's/^..//'`
1732 tm_file_list="${tm_file_list} $f"
1733 tm_include_list="${tm_include_list} $f"
1736 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1737 tm_include_list="${tm_include_list} $f"
1740 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1741 tm_include_list="${tm_include_list} config/$f"
1748 for f in $tm_p_file; do
1751 tm_p_file_list="${tm_p_file_list} $f"
1752 tm_p_include_list="${tm_p_include_list} $f"
1755 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1756 tm_p_include_list="${tm_p_include_list} config/$f"
1762 for f in $xm_file; do
1765 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1766 xm_include_list="${xm_include_list} $f"
1769 xm_file_list="${xm_file_list} $f"
1770 xm_include_list="${xm_include_list} $f"
1773 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1774 xm_include_list="${xm_include_list} config/$f"
1780 host_xm_include_list=
1781 for f in $host_xm_file; do
1784 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1785 host_xm_include_list="${host_xm_include_list} $f"
1788 host_xm_file_list="${host_xm_file_list} $f"
1789 host_xm_include_list="${host_xm_include_list} $f"
1792 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1793 host_xm_include_list="${host_xm_include_list} config/$f"
1799 for f in $build_xm_file; do
1802 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1803 build_xm_include_list="${build_xm_include_list} $f"
1805 auto-build.h | auto-host.h )
1806 build_xm_file_list="${build_xm_file_list} $f"
1807 build_xm_include_list="${build_xm_include_list} $f"
1810 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1811 build_xm_include_list="${build_xm_include_list} config/$f"
1816 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1817 # cross-compiler which does not use the native headers and libraries.
1818 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1819 CROSS= AC_SUBST(CROSS)
1820 ALL=all.internal AC_SUBST(ALL)
1821 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1823 if test "x$with_build_sysroot" != x; then
1824 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1826 # This value is used, even on a native system, because
1827 # CROSS_SYSTEM_HEADER_DIR is just
1828 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1829 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1832 if test x$host != x$target
1834 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1836 SYSTEM_HEADER_DIR=$build_system_header_dir
1837 case "$host","$target" in
1838 # Darwin crosses can use the host system's libraries and headers,
1839 # because of the fat library support. Of course, it must be the
1840 # same version of Darwin on both sides. Allow the user to
1841 # just say --target=foo-darwin without a version number to mean
1842 # "the version on this system".
1843 *-*-darwin*,*-*-darwin*)
1844 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1845 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1846 if test $hostos = $targetos -o $targetos = darwin ; then
1848 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1853 i?86-*-*,x86_64-*-* \
1854 | powerpc*-*-*,powerpc64*-*-*)
1855 CROSS="$CROSS -DNATIVE_CROSS" ;;
1860 if test "x$with_headers" = x; then
1867 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1868 SYSTEM_HEADER_DIR=$build_system_header_dir
1871 # If this is a cross-compiler that does not
1872 # have its own set of headers then define
1875 # If this is using newlib, without having the headers available now,
1876 # then define inhibit_libc in LIBGCC2_CFLAGS.
1877 # This prevents libgcc2 from containing any code which requires libc
1879 : ${inhibit_libc=false}
1880 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1881 test x$with_newlib = xyes ; } &&
1882 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1885 AC_SUBST(inhibit_libc)
1887 # When building gcc with a cross-compiler, we need to adjust things so
1888 # that the generator programs are still built with the native compiler.
1889 # Also, we cannot run fixincludes.
1891 # These are the normal (build=host) settings:
1892 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1893 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1894 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1895 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1896 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1897 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1899 # And these apply if build != host, or we are generating coverage data
1900 if test x$build != x$host || test "x$coverage_flags" != x
1902 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1903 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
1904 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1907 # Expand extra_headers to include complete path.
1908 # This substitutes for lots of t-* files.
1910 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1911 for file in ${extra_headers} ; do
1912 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1915 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1916 if test x"$use_gcc_tgmath" = xyes
1917 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1920 # Define collect2 in Makefile.
1921 case $host_can_use_collect2 in
1923 *) collect2='collect2$(exeext)' ;;
1925 AC_SUBST([collect2])
1927 # Add a definition of USE_COLLECT2 if system wants one.
1928 case $use_collect2 in
1929 no) use_collect2= ;;
1932 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1933 xm_defines="${xm_defines} USE_COLLECT2"
1934 case $host_can_use_collect2 in
1936 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1942 AC_DEFINE_UNQUOTED(FRPLUGINSONAME,"${host_function_reordering_plugin_soname}",
1943 [Define to the name of the function reordering plugin DSO that must be
1944 passed to the linker's -plugin=LIB option.])
1946 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1947 [Define to the name of the LTO plugin DSO that must be
1948 passed to the linker's -plugin=LIB option.])
1950 # ---------------------------
1951 # Assembler & linker features
1952 # ---------------------------
1954 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1955 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1956 # However when ld-new is first executed from the build tree, libtool will
1957 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1958 # to the build tree. While doing this we need to use the previous-stage
1959 # linker, or we have an infinite loop. The presence of a shell script as
1960 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1961 # the gcc/collect-ld script. So we need to know how libtool works, or
1962 # exec-tool will fail.
1964 m4_defun([_LT_CONFIG_COMMANDS], [])
1967 AC_SUBST(enable_fast_install)
1969 # Identify the assembler which will work hand-in-glove with the newly
1970 # built GCC, so that we can examine its features. This is the assembler
1971 # which will be driven by the driver program.
1973 # If build != host, and we aren't building gas in-tree, we identify a
1974 # build->target assembler and hope that it will have the same features
1975 # as the host->target assembler we'll be using.
1976 gcc_cv_gas_major_version=
1977 gcc_cv_gas_minor_version=
1978 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1980 m4_pattern_allow([AS_FOR_TARGET])dnl
1981 AS_VAR_SET_IF(gcc_cv_as,, [
1982 if test -x "$DEFAULT_ASSEMBLER"; then
1983 gcc_cv_as="$DEFAULT_ASSEMBLER"
1984 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1985 && test -f ../gas/Makefile \
1986 && test x$build = x$host; then
1987 gcc_cv_as=../gas/as-new$build_exeext
1988 elif test -x as$build_exeext; then
1989 # Build using assembler in the current directory.
1990 gcc_cv_as=./as$build_exeext
1991 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1992 gcc_cv_as="$AS_FOR_TARGET"
1994 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1997 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1998 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1999 case "$ORIGINAL_AS_FOR_TARGET" in
2000 ./as | ./as$build_exeext) ;;
2001 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2004 AC_MSG_CHECKING(what assembler to use)
2005 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2006 # Single tree build which includes gas. We want to prefer it
2007 # over whatever linker top-level may have detected, since
2008 # we'll use what we're building after installation anyway.
2009 AC_MSG_RESULT(newly built gas)
2011 _gcc_COMPUTE_GAS_VERSION
2012 in_tree_gas_is_elf=no
2013 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2014 || (grep 'obj_format = multi' ../gas/Makefile \
2015 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2017 in_tree_gas_is_elf=yes
2020 AC_MSG_RESULT($gcc_cv_as)
2024 # Identify the linker which will work hand-in-glove with the newly
2025 # built GCC, so that we can examine its features. This is the linker
2026 # which will be driven by the driver program.
2028 # If build != host, and we aren't building gas in-tree, we identify a
2029 # build->target linker and hope that it will have the same features
2030 # as the host->target linker we'll be using.
2031 gcc_cv_gld_major_version=
2032 gcc_cv_gld_minor_version=
2033 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2034 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2036 AS_VAR_SET_IF(gcc_cv_ld,, [
2037 if test -x "$DEFAULT_LINKER"; then
2038 gcc_cv_ld="$DEFAULT_LINKER"
2039 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2040 && test -f ../ld/Makefile \
2041 && test x$build = x$host; then
2042 gcc_cv_ld=../ld/ld-new$build_exeext
2043 elif test -x collect-ld$build_exeext; then
2044 # Build using linker in the current directory.
2045 gcc_cv_ld=./collect-ld$build_exeext
2046 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2047 gcc_cv_ld="$LD_FOR_TARGET"
2049 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2052 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2053 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2054 # if the PLUGIN_LD is set ld-new, just have it as ld
2055 # as that is the installed named.
2056 if test x$PLUGIN_LD_SUFFIX = xld-new \
2057 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2060 AC_ARG_WITH(plugin-ld,
2061 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2062 [if test x"$withval" != x; then
2063 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2064 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2066 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2067 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2069 # Check to see if we are using gold instead of ld
2070 AC_MSG_CHECKING(whether we are using gold)
2072 if test x$gcc_cv_ld != x; then
2073 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2074 | grep "GNU gold" > /dev/null; then
2078 AC_MSG_RESULT($ld_is_gold)
2080 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2081 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2082 case "$ORIGINAL_LD_FOR_TARGET" in
2083 ./collect-ld | ./collect-ld$build_exeext) ;;
2084 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2087 AC_MSG_CHECKING(what linker to use)
2088 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2089 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2090 # Single tree build which includes ld. We want to prefer it
2091 # over whatever linker top-level may have detected, since
2092 # we'll use what we're building after installation anyway.
2093 AC_MSG_RESULT(newly built ld)
2095 in_tree_ld_is_elf=no
2096 if (grep 'EMUL = .*elf' ../ld/Makefile \
2097 || grep 'EMUL = .*linux' ../ld/Makefile \
2098 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2099 in_tree_ld_is_elf=yes
2100 elif test "$ld_is_gold" = yes; then
2101 in_tree_ld_is_elf=yes
2103 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
2106 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2107 if test x$gcc_cv_gld_version != x; then
2111 case $gcc_cv_gld_version in
2114 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2117 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2118 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2121 AC_MSG_RESULT($gcc_cv_ld)
2125 # Figure out what nm we will be using.
2126 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2127 AS_VAR_SET_IF(gcc_cv_nm,, [
2128 if test -f $gcc_cv_binutils_srcdir/configure.in \
2129 && test -f ../binutils/Makefile \
2130 && test x$build = x$host; then
2131 gcc_cv_nm=../binutils/nm-new$build_exeext
2132 elif test -x nm$build_exeext; then
2133 gcc_cv_nm=./nm$build_exeext
2134 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2135 gcc_cv_nm="$NM_FOR_TARGET"
2137 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2140 AC_MSG_CHECKING(what nm to use)
2141 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2142 # Single tree build which includes binutils.
2143 AC_MSG_RESULT(newly built nm)
2146 AC_MSG_RESULT($gcc_cv_nm)
2150 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2151 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2152 case "$ORIGINAL_NM_FOR_TARGET" in
2153 ./nm | ./nm$build_exeext) ;;
2154 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2158 # Figure out what objdump we will be using.
2159 AS_VAR_SET_IF(gcc_cv_objdump,, [
2160 if test -f $gcc_cv_binutils_srcdir/configure.in \
2161 && test -f ../binutils/Makefile \
2162 && test x$build = x$host; then
2163 # Single tree build which includes binutils.
2164 gcc_cv_objdump=../binutils/objdump$build_exeext
2165 elif test -x objdump$build_exeext; then
2166 gcc_cv_objdump=./objdump$build_exeext
2167 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2168 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2170 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2173 AC_MSG_CHECKING(what objdump to use)
2174 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2175 # Single tree build which includes binutils.
2176 AC_MSG_RESULT(newly built objdump)
2177 elif test x$gcc_cv_objdump = x; then
2178 AC_MSG_RESULT(not found)
2180 AC_MSG_RESULT($gcc_cv_objdump)
2183 # Figure out what readelf we will be using.
2184 AS_VAR_SET_IF(gcc_cv_readelf,, [
2185 if test -f $gcc_cv_binutils_srcdir/configure.in \
2186 && test -f ../binutils/Makefile \
2187 && test x$build = x$host; then
2188 # Single tree build which includes binutils.
2189 gcc_cv_readelf=../binutils/readelf$build_exeext
2190 elif test -x readelf$build_exeext; then
2191 gcc_cv_readelf=./readelf$build_exeext
2193 AC_PATH_PROG(gcc_cv_readelf, readelf)
2196 AC_MSG_CHECKING(what readelf to use)
2197 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2198 # Single tree build which includes binutils.
2199 AC_MSG_RESULT(newly built readelf)
2200 elif test x$gcc_cv_readelf = x; then
2201 AC_MSG_RESULT(not found)
2203 AC_MSG_RESULT($gcc_cv_readelf)
2206 # Figure out what assembler alignment features are present.
2207 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2211 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2212 [Define if your assembler supports .balign and .p2align.])])
2214 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2217 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2218 [Define if your assembler supports specifying the maximum number
2219 of bytes to skip when using the GAS .p2align command.])])
2221 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2224 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2225 [Define if your assembler supports .literal16.])])
2227 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2229 [conftest_label1: .word 0
2231 conftest_label2: .word 0
2233 [if test x$gcc_cv_nm != x; then
2234 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2235 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2236 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2238 else gcc_cv_as_subsection_m1=yes
2240 rm -f conftest.nm1 conftest.nm2
2242 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2243 [Define if your assembler supports .subsection and .subsection -1 starts
2244 emitting at the beginning of your section.])])
2246 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2249 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2251 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2253 [ .weakref foobar, barfnot],,
2254 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2256 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2259 .NSUBSPA $CODE$,COMDAT],,
2260 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2262 # .hidden needs to be supported in both the assembler and the linker,
2263 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2264 # This is irritatingly difficult to feature test for; we have to check the
2265 # date string after the version number. If we've got an in-tree
2266 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2268 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2269 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2273 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2274 # STV_HIDDEN, so disable .hidden support if so.
2276 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2277 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2278 cat > conftest.s <<EOF
2285 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2286 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2287 grep '\.hidden default' > /dev/null; then
2290 gcc_cv_as_hidden=yes
2293 # Assume bug is present if objdump is missing.
2298 gcc_cv_as_hidden=yes
2303 # Darwin as has some visibility support, though with a different syntax.
2304 gcc_cv_as_hidden=yes
2308 # gnu_indirect_function type is an extension proposed at
2309 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2310 # selection of function implementation
2311 AC_ARG_ENABLE(gnu-indirect-function,
2312 [AS_HELP_STRING([--enable-gnu-indirect-function],
2313 [enable the use of the @gnu_indirect_function to glibc systems])],
2314 [case $enable_gnu_indirect_function in
2316 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2317 Valid choices are 'yes' and 'no'.]) ;;
2319 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2320 if test x$enable_gnu_indirect_function = xyes; then
2321 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2322 [Define if your system supports gnu indirect functions.])
2326 if test $in_tree_ld != yes ; then
2327 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2328 if echo "$ld_ver" | grep GNU > /dev/null; then
2329 if test x"$ld_is_gold" = xyes; then
2330 # GNU gold --version looks like this:
2332 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2334 # We extract the binutils version which is more familiar and specific
2335 # than the gold version.
2336 ld_vers=`echo $ld_ver | sed -n \
2337 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2339 # GNU ld --version looks like this:
2341 # GNU ld (GNU Binutils) 2.21.51.20110225
2342 ld_vers=`echo $ld_ver | sed -n \
2343 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2345 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2346 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2347 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2348 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2352 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2355 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2356 # /usr/ccs/bin/ld has been configured.
2357 ld_ver=`$gcc_cv_ld -V 2>&1`
2358 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2359 ld_vers=`echo $ld_ver | sed -n \
2360 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2361 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2362 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2370 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2371 [[if test $in_tree_ld = yes ; then
2373 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2374 && test $in_tree_ld_is_elf = yes; then
2375 gcc_cv_ld_hidden=yes
2378 gcc_cv_ld_hidden=yes
2379 if test x"$ld_is_gold" = xyes; then
2381 elif echo "$ld_ver" | grep GNU > /dev/null; then
2383 mmix-knuth-mmixware)
2384 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2388 if test 0"$ld_date" -lt 20020404; then
2389 if test -n "$ld_date"; then
2390 # If there was date string, but was earlier than 2002-04-04, fail
2392 elif test -z "$ld_vers"; then
2393 # If there was no date string nor ld version number, something is wrong
2396 test -z "$ld_vers_patch" && ld_vers_patch=0
2397 if test "$ld_vers_major" -lt 2; then
2399 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2400 gcc_cv_ld_hidden="no"
2401 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2409 # Darwin ld has some visibility support.
2410 gcc_cv_ld_hidden=yes
2412 hppa64*-*-hpux* | ia64*-*-hpux*)
2413 gcc_cv_ld_hidden=yes
2415 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2416 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2417 # .symbolic was only added in Solaris 9 12/02.
2418 gcc_cv_ld_hidden=yes
2426 libgcc_visibility=no
2427 AC_SUBST(libgcc_visibility)
2428 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2429 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2430 libgcc_visibility=yes
2431 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2432 [Define if your assembler and linker support .hidden.])
2435 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2436 gcc_cv_ld_ro_rw_mix=unknown
2437 if test $in_tree_ld = yes ; then
2438 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2439 && test $in_tree_ld_is_elf = yes; then
2440 gcc_cv_ld_ro_rw_mix=read-write
2442 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2443 echo '.section myfoosect, "a"' > conftest1.s
2444 echo '.section myfoosect, "aw"' > conftest2.s
2445 echo '.byte 1' >> conftest2.s
2446 echo '.section myfoosect, "a"' > conftest3.s
2447 echo '.byte 0' >> conftest3.s
2448 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2449 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2450 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2451 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2452 conftest2.o conftest3.o > /dev/null 2>&1; then
2453 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2454 | sed -e '/myfoosect/!d' -e N`
2455 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2456 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2457 gcc_cv_ld_ro_rw_mix=read-only
2459 gcc_cv_ld_ro_rw_mix=read-write
2464 rm -f conftest.* conftest[123].*
2467 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2468 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2469 [Define if your linker links a mix of read-only
2470 and read-write sections into a read-write section.])
2472 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2474 gcc_AC_INITFINI_ARRAY
2476 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2477 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2485 [[# GAS versions before 2.11 do not support uleb128,
2486 # despite appearing to.
2487 # ??? There exists an elf-specific test that will crash
2488 # the assembler. Perhaps it's better to figure out whether
2489 # arbitrary sections are supported and try the test.
2490 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2491 if echo "$as_ver" | grep GNU > /dev/null; then
2492 as_vers=`echo $as_ver | sed -n \
2493 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2494 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2495 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2496 if test $as_major -eq 2 && test $as_minor -lt 11
2498 else gcc_cv_as_leb128=yes
2501 [AC_DEFINE(HAVE_AS_LEB128, 1,
2502 [Define if your assembler supports .sleb128 and .uleb128.])])
2504 # Check if we have assembler support for unwind directives.
2505 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2512 .cfi_escape 1, 2, 3, 4, 5
2516 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2517 # read-only and read-write sections, we need to make sure that the
2518 # assembler used emits read-write .eh_frame sections.
2519 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2520 if test "x$gcc_cv_objdump" != x; then
2521 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2522 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2523 gcc_cv_as_cfi_directive=no
2526 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2527 # On Solaris/x86, make sure that GCC and gas agree on using
2528 # read-only .eh_frame sections for 64-bit.
2529 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2530 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2531 sed -e /.eh_frame/!d -e N | \
2532 grep READONLY > /dev/null; then
2533 gcc_cv_as_cfi_directive=yes
2535 gcc_cv_as_cfi_directive=no
2539 gcc_cv_as_cfi_directive=yes
2544 # no objdump, err on the side of caution
2545 gcc_cv_as_cfi_directive=no
2548 gcc_cv_as_cfi_directive=yes
2552 gcc_cv_as_cfi_directive=yes
2555 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2556 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2560 .cfi_adjust_cfa_offset 64
2562 .cfi_adjust_cfa_offset 128
2565 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2566 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2567 gcc_cv_as_cfi_advance_working=yes
2571 # no objdump, err on the side of caution
2572 gcc_cv_as_cfi_advance_working=no
2574 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2575 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2576 [`if test $gcc_cv_as_cfi_directive = yes \
2577 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2578 [Define 0/1 if your assembler supports CFI directives.])
2580 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2581 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2582 gcc_cv_as_cfi_personality_directive, ,,
2585 .cfi_personality 0, symbol
2587 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2588 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2589 then echo 1; else echo 0; fi`],
2590 [Define 0/1 if your assembler supports .cfi_personality.])
2592 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2593 gcc_cv_as_cfi_sections_directive, ,,
2595 .cfi_sections .debug_frame, .eh_frame
2599 win32 | pe | cygwin* | mingw32* | uwin*)
2600 # Need to check that we generated the correct relocation for the
2601 # .debug_frame section. This was fixed for binutils 2.21.
2602 gcc_cv_as_cfi_sections_directive=no
2603 if test "x$gcc_cv_objdump" != x; then
2604 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2605 grep secrel > /dev/null; then
2606 gcc_cv_as_cfi_sections_directive=yes
2611 gcc_cv_as_cfi_sections_directive=yes
2614 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2615 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2616 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2617 then echo 1; else echo 0; fi`],
2618 [Define 0/1 if your assembler supports .cfi_sections.])
2620 # GAS versions up to and including 2.11.0 may mis-optimize
2622 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2630 .section .eh_frame,"aw",@progbits
2632 .4byte .LECIE1-.LSCIE1
2646 .4byte .LEFDE1-.LASFDE1
2648 .4byte .LASFDE1-__FRAME_BEGIN__
2656 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2657 cat > conftest.lit <<EOF
2658 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2659 0010 01000000 12000000 18000000 00000000 ................
2660 0020 08000000 04080000 0044 .........D @&t@
2662 cat > conftest.big <<EOF
2663 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2664 0010 00000001 00000012 00000018 00000000 ................
2665 0020 00000008 04000000 0844 .........D @&t@
2667 # If the assembler didn't choke, and we can objdump,
2668 # and we got the correct data, then succeed.
2669 # The text in the here-document typically retains its unix-style line
2670 # endings, while the output of objdump will use host line endings.
2671 # Therefore, use diff -b for the comparisons.
2672 if test x$gcc_cv_objdump != x \
2673 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2674 | tail -3 > conftest.got \
2675 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2676 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2678 gcc_cv_as_eh_frame=yes
2679 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2680 gcc_cv_as_eh_frame=buggy
2682 # Uh oh, what do we do now?
2683 gcc_cv_as_eh_frame=no
2686 if test $gcc_cv_as_eh_frame = buggy; then
2687 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2688 [Define if your assembler mis-optimizes .eh_frame data.])
2691 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2692 [elf,2,12,0], [--fatal-warnings],
2693 [.section .rodata.str, "aMS", @progbits, 1])
2694 if test $gcc_cv_as_shf_merge = no; then
2695 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2696 [elf,2,12,0], [--fatal-warnings],
2697 [.section .rodata.str, "aMS", %progbits, 1])
2699 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2700 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2701 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2703 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2704 gcc_cv_as_comdat_group,
2705 [elf,2,16,0], [--fatal-warnings],
2706 [.section .text,"axG",@progbits,.foo,comdat])
2707 if test $gcc_cv_as_comdat_group = yes; then
2708 gcc_cv_as_comdat_group_percent=no
2709 gcc_cv_as_comdat_group_group=no
2711 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2712 gcc_cv_as_comdat_group_percent,
2713 [elf,2,16,0], [--fatal-warnings],
2714 [.section .text,"axG",%progbits,.foo,comdat])
2715 if test $gcc_cv_as_comdat_group_percent = yes; then
2716 gcc_cv_as_comdat_group_group=no
2718 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2719 gcc_cv_as_comdat_group_group=no
2722 # Sun as uses a completely different syntax.
2727 .group foo,".text%foo",#comdat
2728 .section ".text%foo", #alloc,#execinstr,#progbits
2733 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2735 .group foo,.text%foo,#comdat
2736 .section .text%foo, "ax", @progbits
2742 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2743 gcc_cv_as_comdat_group_group,
2749 if test x"$ld_is_gold" = xyes; then
2751 elif test $in_tree_ld = yes ; then
2753 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2754 && test $in_tree_ld_is_elf = yes; then
2757 elif echo "$ld_ver" | grep GNU > /dev/null; then
2759 if test 0"$ld_date" -lt 20050308; then
2760 if test -n "$ld_date"; then
2761 # If there was date string, but was earlier than 2005-03-08, fail
2763 elif test "$ld_vers_major" -lt 2; then
2765 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2772 *-*-solaris2.1[1-9]*)
2774 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2775 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2778 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2779 # least ld version 1.2267.
2780 if test "$ld_vers_major" -gt 1; then
2782 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2784 elif test "$ld_vers_minor" -ge 2267; then
2789 # Assume linkers other than GNU ld don't support COMDAT group.
2795 # Allow overriding the automatic COMDAT group tests above.
2796 AC_ARG_ENABLE(comdat,
2797 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2798 [comdat_group="$enable_comdat"])
2799 if test $comdat_group = no; then
2800 gcc_cv_as_comdat_group=no
2801 gcc_cv_as_comdat_group_percent=no
2802 gcc_cv_as_comdat_group_group=no
2804 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2805 [`if test $gcc_cv_as_comdat_group = yes \
2806 || test $gcc_cv_as_comdat_group_percent = yes \
2807 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2808 [Define 0/1 if your assembler and linker support COMDAT groups.])
2810 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2811 gcc_cv_as_discriminator,
2815 .loc 1 1 0 discriminator 1],,
2816 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2817 [Define if your assembler supports the .loc discriminator sub-directive.])])
2819 # Thread-local storage - the check is heavily parameterized.
2828 .section ".tdata","awT",@progbits
2831 ldq $27,__tls_get_addr($29) !literal!1
2832 lda $16,foo($29) !tlsgd!1
2833 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2834 ldq $27,__tls_get_addr($29) !literal!2
2835 lda $16,foo($29) !tlsldm!2
2836 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2837 ldq $1,foo($29) !gotdtprel
2838 ldah $2,foo($29) !dtprelhi
2839 lda $3,foo($2) !dtprello
2840 lda $4,foo($29) !dtprel
2841 ldq $1,foo($29) !gottprel
2842 ldah $2,foo($29) !tprelhi
2843 lda $3,foo($2) !tprello
2844 lda $4,foo($29) !tprel'
2847 tls_as_opt=--fatal-warnings
2849 cris-*-*|crisv32-*-*)
2851 .section ".tdata","awT",@progbits
2858 tls_as_opt=--fatal-warnings
2862 .section ".tdata","awT",@progbits
2874 .section ".tdata","awT",@progbits
2878 addil LT%foo-$tls_gdidx$,gp
2879 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2882 addil LT%foo-$tls_ldidx$,gp
2884 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2885 addil LR%foo-$tls_dtpoff$,%ret0
2886 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2888 addil LT%foo-$tls_ieoff$,gp
2889 ldw RT%foo-$tls_ieoff$(%r1),%t2
2892 addil LR%foo-$tls_leoff$,%t1
2893 ldo RR%foo-$tls_leoff$(%r1),%t2'
2896 tls_as_opt=--fatal-warnings
2900 .section ".tdata","awT",%progbits
2911 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2913 i[34567]86-*-solaris2.*)
2915 tga_func=___tls_get_addr
2917 x86_64-*-solaris2.1[0-9]*)
2919 tga_func=__tls_get_addr
2925 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2927 .section .tdata,"awt",@progbits'
2931 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2932 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2936 .section ".tdata","awT",@progbits'
2939 tls_as_opt="--fatal-warnings"
2941 conftest_s="$conftest_s
2945 leal foo@tlsgd(,%ebx,1), %eax
2946 leal foo@tlsldm(%ebx), %eax
2947 leal foo@dtpoff(%eax), %edx
2948 movl foo@gottpoff(%ebx), %eax
2949 subl foo@gottpoff(%ebx), %eax
2950 addl foo@gotntpoff(%ebx), %eax
2951 movl foo@indntpoff, %eax
2952 movl \$foo@tpoff, %eax
2953 subl \$foo@tpoff, %eax
2954 leal foo@ntpoff(%ecx), %eax"
2958 .section ".tdata","awT",@progbits
2962 leaq foo@TLSGD(%rip), %rdi
2963 leaq foo@TLSLD(%rip), %rdi
2964 leaq foo@DTPOFF(%rax), %rdx
2965 movq foo@GOTTPOFF(%rip), %rax
2966 movq $foo@TPOFF, %rax'
2969 tls_as_opt=--fatal-warnings
2973 .section ".tdata","awT",@progbits
2976 addl r16 = @ltoff(@dtpmod(foo#)), gp
2977 addl r17 = @ltoff(@dtprel(foo#)), gp
2978 addl r18 = @ltoff(@tprel(foo#)), gp
2979 addl r19 = @dtprel(foo#), gp
2980 adds r21 = @dtprel(foo#), r13
2981 movl r23 = @dtprel(foo#)
2982 addl r20 = @tprel(foo#), gp
2983 adds r22 = @tprel(foo#), r13
2984 movl r24 = @tprel(foo#)'
2987 tls_as_opt=--fatal-warnings
2991 .section .tdata,"awT",@progbits
2995 addik r5,r20,x@TLSGD
2996 addik r5,r20,x@TLSLDM'
2999 tls_as_opt='--fatal-warnings'
3003 .section .tdata,"awT",@progbits
3007 addiu $4, $28, %tlsgd(x)
3008 addiu $4, $28, %tlsldm(x)
3009 lui $4, %dtprel_hi(x)
3010 addiu $4, $4, %dtprel_lo(x)
3011 lw $4, %gottprel(x)($28)
3012 lui $4, %tprel_hi(x)
3013 addiu $4, $4, %tprel_lo(x)'
3016 tls_as_opt='-32 --fatal-warnings'
3020 .section .tdata,"awT",@progbits
3025 move.l x@TLSGD(%a5),%a0
3026 move.l x@TLSLDM(%a5),%a0
3027 move.l x@TLSLDO(%a5),%a0
3028 move.l x@TLSIE(%a5),%a0
3029 move.l x@TLSLE(%a5),%a0'
3032 tls_as_opt='--fatal-warnings'
3036 .section ".tdata","awT",%progbits
3040 add x0, x0, #:tlsgd_lo12:x
3045 tls_as_opt='--fatal-warnings'
3049 .extern __get_tpointer
3067 .section ".tdata","awT",@progbits
3075 addi 3,2,ld0@got@tlsgd
3081 addi 3,2,x1@got@tlsld
3087 addis 9,3,x2@dtprel@ha
3088 addi 9,9,x2@dtprel@l
3091 ld 9,x3@got@dtprel(2)
3097 tls_as_opt="-a64 --fatal-warnings"
3101 .section ".tdata","awT",@progbits
3109 addi 3,31,ld0@got@tlsgd
3111 addi 3,31,x1@got@tlsld
3114 addis 9,3,x2@dtprel@ha
3115 addi 9,9,x2@dtprel@l
3116 lwz 9,x3@got@tprel(31)
3119 addis 9,2,x2@tprel@ha
3120 addi 9,9,x2@tprel@l'
3123 tls_as_opt="-a32 --fatal-warnings"
3127 .section ".tdata","awT",@progbits
3136 l %r1,foo@GOTNTPOFF(%r12)
3137 l %r1,0(%r1):tls_load:foo
3138 bas %r14,0(%r1,%r13):tls_gdcall:foo
3139 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3142 tls_as_opt="-m31 --fatal-warnings"
3146 .section ".tdata","awT",@progbits
3154 lg %r1,foo@GOTNTPOFF(%r12)
3155 larl %r1,foo@INDNTPOFF
3156 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3157 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3160 tls_as_opt="-m64 -Aesame --fatal-warnings"
3162 sh-*-* | sh[34]-*-*)
3164 .section ".tdata","awT",@progbits
3174 tls_as_opt=--fatal-warnings
3178 sparc*-sun-solaris2.*)
3180 tga_func=__tls_get_addr
3186 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3188 .section ".tdata",#alloc,#write,#tls'
3193 .section ".tdata","awT",@progbits'
3196 tls_as_opt="-32 --fatal-warnings"
3198 conftest_s="$conftest_s
3201 sethi %tgd_hi22(foo), %o0
3202 add %o0, %tgd_lo10(foo), %o1
3203 add %l7, %o1, %o0, %tgd_add(foo)
3204 call __tls_get_addr, %tgd_call(foo)
3205 sethi %tldm_hi22(foo), %l1
3206 add %l1, %tldm_lo10(foo), %l2
3207 add %l7, %l2, %o0, %tldm_add(foo)
3208 call __tls_get_addr, %tldm_call(foo)
3209 sethi %tldo_hix22(foo), %l3
3210 xor %l3, %tldo_lox10(foo), %l4
3211 add %o0, %l4, %l5, %tldo_add(foo)
3212 sethi %tie_hi22(foo), %o3
3213 add %o3, %tie_lo10(foo), %o3
3214 ld [%l7 + %o3], %o2, %tie_ld(foo)
3215 add %g7, %o2, %o4, %tie_add(foo)
3216 sethi %tle_hix22(foo), %l1
3217 xor %l1, %tle_lox10(foo), %o5
3218 ld [%g7 + %o5], %o1"
3222 .section ".tdata","awT",@progbits
3225 addli r0, zero, tls_gd(foo)
3226 auli r0, zero, tls_gd_ha16(foo)
3227 addli r0, r0, tls_gd_lo16(foo)
3229 addli r0, zero, tls_ie(foo)
3230 auli r0, r0, tls_ie_ha16(foo)
3231 addli r0, r0, tls_ie_lo16(foo)'
3234 tls_as_opt="--fatal-warnings"
3238 .section ".tdata","awT",@progbits
3241 shl16insli r0, zero, hw0_last_tls_gd(foo)
3242 shl16insli r0, zero, hw1_last_tls_gd(foo)
3243 shl16insli r0, r0, hw0_tls_gd(foo)
3245 shl16insli r0, zero, hw1_last_tls_ie(foo)
3246 shl16insli r0, r0, hw0_tls_ie(foo)'
3249 tls_as_opt="--fatal-warnings"
3253 .section ".tdata","awT",@progbits
3256 movi a8, foo@TLSFUNC
3257 movi a10, foo@TLSARG
3258 callx8.tls a8, foo@TLSCALL'
3265 if test "x$enable_tls" = xno ; then
3266 : # TLS explicitly disabled.
3267 elif test "x$enable_tls" = xyes ; then
3268 set_have_as_tls=yes # TLS explicitly enabled.
3269 elif test -z "$tls_first_major"; then
3270 : # If we don't have a check, assume no support.
3272 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3273 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3274 [set_have_as_tls=yes])
3277 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3278 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3279 # Sun style that Sun ld and GCC don't support any longer.
3281 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3283 # Check ld and ld.so.1 TLS support.
3284 if echo "$ld_ver" | grep GNU > /dev/null; then
3285 # Assume all interesting versions of GNU ld have TLS support.
3286 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3290 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3292 min_tls_ld_vers_minor=374
3294 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3295 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3296 min_tls_ld_vers_minor=343
3299 if test "$ld_vers_major" -gt 1 || \
3300 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3306 AC_MSG_RESULT($ld_tls_support)
3309 save_LDFLAGS="$LDFLAGS"
3313 AC_MSG_CHECKING(library containing $tga_func)
3314 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3315 # (32-bit x86) only lived in libthread, so check for that. Keep
3316 # set_have_as_tls if found, disable if not.
3317 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3318 # Clear LIBS if we cannot support TLS.
3319 if test $set_have_as_tls = no; then
3322 # Always define LIB_TLS_SPEC, even without TLS support.
3323 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3324 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3325 AC_MSG_RESULT($LIBS)
3328 LDFLAGS="$save_LDFLAGS"
3331 if test $set_have_as_tls = yes ; then
3332 AC_DEFINE(HAVE_AS_TLS, 1,
3333 [Define if your assembler and linker support thread-local storage.])
3336 # Target-specific assembler checks.
3338 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3339 gcc_cv_ld_static_dynamic=no
3340 gcc_cv_ld_static_option='-Bstatic'
3341 gcc_cv_ld_dynamic_option='-Bdynamic'
3342 if test $in_tree_ld = yes ; then
3343 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3344 gcc_cv_ld_static_dynamic=yes
3346 elif test x$gcc_cv_ld != x; then
3347 # Check if linker supports -Bstatic/-Bdynamic option
3348 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3349 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3350 gcc_cv_ld_static_dynamic=yes
3353 # AIX ld uses -b flags
3354 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3355 gcc_cv_ld_static_dynamic=yes
3356 gcc_cv_ld_static_option="-bstatic"
3357 gcc_cv_ld_dynamic_option="-bdynamic"
3359 # HP-UX ld uses -a flags to select between shared and archive.
3361 if test x"$gnu_ld" = xno; then
3362 gcc_cv_ld_static_dynamic=yes
3363 gcc_cv_ld_static_option="-aarchive_shared"
3364 gcc_cv_ld_dynamic_option="-adefault"
3367 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3369 gcc_cv_ld_static_dynamic=yes
3374 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3375 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3376 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3377 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3378 [Define to the linker option to disable use of shared objects.])
3379 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3380 [Define to the linker option to enable use of shared objects.])
3382 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3384 if test x"$demangler_in_ld" = xyes; then
3385 AC_MSG_CHECKING(linker --demangle support)
3386 gcc_cv_ld_demangle=no
3387 if test $in_tree_ld = yes; then
3388 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3389 gcc_cv_ld_demangle=yes
3391 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3392 # Check if the GNU linker supports --demangle option
3393 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3394 gcc_cv_ld_demangle=yes
3397 if test x"$gcc_cv_ld_demangle" = xyes; then
3398 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3399 [Define if your linker supports --demangle option.])
3401 AC_MSG_RESULT($gcc_cv_ld_demangle)
3404 AC_MSG_CHECKING(linker plugin support)
3406 if test -f liblto_plugin.la; then
3407 save_ld_ver="$ld_ver"
3408 save_ld_vers_major="$ld_vers_major"
3409 save_ld_vers_minor="$ld_vers_minor"
3410 save_ld_is_gold="$ld_is_gold"
3414 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3416 # FIXME: ld_is_gold?
3417 ld_vers_major="$gcc_cv_gld_major_version"
3418 ld_vers_minor="$gcc_cv_gld_minor_version"
3420 # Determine plugin linker version.
3421 # FIXME: Partial duplicate from above, generalize.
3423 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3424 if echo "$ld_ver" | grep GNU > /dev/null; then
3425 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3427 ld_vers=`echo $ld_ver | sed -n \
3428 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3430 ld_vers=`echo $ld_ver | sed -n \
3431 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3433 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3434 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3439 # Determine plugin support.
3440 if echo "$ld_ver" | grep GNU > /dev/null; then
3441 # Require GNU ld or gold 2.21+ for plugin support by default.
3442 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3444 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3445 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3450 ld_ver="$save_ld_ver"
3451 ld_vers_major="$save_ld_vers_major"
3452 ld_vers_minor="$save_ld_vers_minor"
3453 ld_is_gold="$save_ld_is_gold"
3455 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3456 [Define to the level of your linker's plugin support.])
3457 AC_MSG_RESULT($gcc_cv_lto_plugin)
3460 # All TARGET_ABI_OSF targets.
3461 alpha*-*-linux* | alpha*-*-*bsd*)
3462 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3463 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3466 extbl $3, $2, $3 !lituse_bytoff!1
3467 ldq $2, a($29) !literal!1
3468 ldq $4, b($29) !literal!2
3469 ldq_u $3, 0($2) !lituse_base!1
3470 ldq $27, f($29) !literal!5
3471 jsr $26, ($27), f !lituse_jsr!5
3472 ldah $29, 0($26) !gpdisp!3
3473 lda $0, c($29) !gprel
3474 ldah $1, d($29) !gprelhigh
3475 lda $1, d($1) !gprellow
3476 lda $29, 0($29) !gpdisp!3],,
3477 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3478 [Define if your assembler supports explicit relocations.])])
3479 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3480 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3483 ldq $27, a($29) !literal!1
3484 jsr $26, ($27), a !lituse_jsrdirect!1],,
3485 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3486 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3490 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3491 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3492 [-no-mul-bug-abort], [.text],,
3493 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3494 [Define if your assembler supports the -no-mul-bug-abort option.])])
3498 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3499 [.register %g2, #scratch],,
3500 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3501 [Define if your assembler supports .register.])])
3503 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3504 [.section "nobits",#alloc,#write,#nobits
3505 .section "progbits",#alloc,#write,#progbits])
3506 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3507 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3508 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3510 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3512 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3513 [Define if your assembler supports -relax option.])])
3515 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3516 gcc_cv_as_sparc_gotdata_op,,
3523 sethi %gdop_hix22(foo), %g1
3524 xor %g1, %gdop_lox10(foo), %g1
3525 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3526 [if test x$gcc_cv_ld != x \
3527 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3528 if test x$gcc_cv_objdump != x; then
3529 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3530 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3531 gcc_cv_as_sparc_gotdata_op=no
3533 gcc_cv_as_sparc_gotdata_op=yes
3538 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3539 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3541 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3542 gcc_cv_as_sparc_ua_pcrel,,
3550 .uaword %r_disp32(foo)],
3551 [if test x$gcc_cv_ld != x \
3552 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3553 gcc_cv_as_sparc_ua_pcrel=yes
3556 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3557 [Define if your assembler and linker support unaligned PC relative relocs.])
3559 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3560 gcc_cv_as_sparc_ua_pcrel_hidden,,
3565 .uaword %r_disp32(foo)
3566 .byte 0x32, 0x33, 0x34
3571 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3572 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3573 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3574 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3575 if $gcc_cv_objdump -R conftest 2> /dev/null \
3576 | grep 'DISP32' > /dev/null 2>&1; then
3579 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3583 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3584 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3585 ]) # unaligned pcrel relocs
3587 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3588 gcc_cv_as_sparc_offsetable_lo10,,
3591 or %g1, %lo(ab) + 12, %g1
3592 or %g1, %lo(ab + 12), %g1],
3593 [if test x$gcc_cv_objdump != x \
3594 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3595 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3596 gcc_cv_as_sparc_offsetable_lo10=yes
3598 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3599 [Define if your assembler supports offsetable %lo().])])
3601 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3602 gcc_cv_as_sparc_fmaf,,
3605 .register %g2, #scratch
3606 .register %g3, #scratch
3608 fmaddd %f0, %f2, %f4, %f6
3609 addxccc %g1, %g2, %g3
3610 fsrl32 %f2, %f4, %f8
3611 fnaddd %f10, %f12, %f14],,
3612 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3613 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3615 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3616 gcc_cv_as_sparc_sparc4,,
3619 .register %g2, #scratch
3620 .register %g3, #scratch
3623 1: cwbneg %g2, %g3, 1f
3626 aes_kexpand0 %f4, %f6, %f8
3627 des_round %f38, %f40, %f42, %f44
3628 camellia_f %f54, %f56, %f58, %f60
3629 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3630 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3631 [Define if your assembler supports SPARC4 instructions.])])
3633 gcc_GAS_CHECK_FEATURE([LEON instructions],
3634 gcc_cv_as_sparc_leon,,
3637 .register %g2, #scratch
3638 .register %g3, #scratch
3642 cas [[%g2]], %g3, %g1],,
3643 [AC_DEFINE(HAVE_AS_LEON, 1,
3644 [Define if your assembler supports LEON instructions.])])
3648 i[34567]86-*-* | x86_64-*-*)
3652 # Full C++ conformance when using a shared libstdc++-v3 requires some
3653 # support from the Cygwin DLL, which in more recent versions exports
3654 # wrappers to aid in interposing and redirecting operators new, delete,
3655 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3656 # are configuring for a version of Cygwin that exports the wrappers.
3657 if test x$host = x$target; then
3658 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3660 # Can't check presence of libc functions during cross-compile, so
3661 # we just have to assume we're building for an up-to-date target.
3662 gcc_ac_cygwin_dll_wrappers=yes
3664 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3665 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3666 [Define if you want to generate code by default that assumes that the
3667 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3670 cygwin* | pe | mingw32* | interix*)
3671 # Recent binutils allows the three-operand form of ".comm" on PE. This
3672 # definition is used unconditionally to initialise the default state of
3673 # the target option variable that governs usage of the feature.
3674 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3675 [2,19,52],,[.comm foo,1,32])
3676 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3677 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3678 [Define if your assembler supports specifying the alignment
3679 of objects allocated using the GAS .comm command.])
3680 # Used for DWARF 2 in PE
3681 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3682 gcc_cv_as_ix86_pe_secrel32,
3688 [if test x$gcc_cv_ld != x \
3689 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3690 gcc_cv_as_ix86_pe_secrel32=yes
3693 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3694 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3695 # Test if the assembler supports the extended form of the .section
3696 # directive that specifies section alignment. LTO support uses this,
3697 # but normally only after installation, so we warn but don't fail the
3698 # configure if LTO is enabled but the assembler does not support it.
3699 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3700 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3701 if test x$gcc_cv_as_section_has_align != xyes; then
3702 case ",$enable_languages," in
3704 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3708 # Test if the assembler supports the section flag 'e' for specifying
3709 # an excluded section.
3710 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3714 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3715 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3716 [Define if your assembler supports specifying the section flag e.])
3720 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3721 gcc_cv_as_ix86_filds,,,
3722 [filds mem; fists mem],,
3723 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3724 [Define if your assembler uses filds and fists mnemonics.])])
3726 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3727 gcc_cv_as_ix86_fildq,,,
3728 [fildq mem; fistpq mem],,
3729 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3730 [Define if your assembler uses fildq and fistq mnemonics.])])
3732 gcc_GAS_CHECK_FEATURE([cmov syntax],
3733 gcc_cv_as_ix86_cmov_sun_syntax,,,
3734 [cmovl.l %edx, %eax],,
3735 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3736 [Define if your assembler supports the Sun syntax for cmov.])])
3738 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3739 gcc_cv_as_ix86_ffreep,,,
3741 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3742 [Define if your assembler supports the ffreep mnemonic.])])
3744 gcc_GAS_CHECK_FEATURE([.quad directive],
3745 gcc_cv_as_ix86_quad,,,
3747 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3748 [Define if your assembler supports the .quad directive.])])
3750 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3751 gcc_cv_as_ix86_sahf,,,
3754 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3755 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3757 gcc_GAS_CHECK_FEATURE([hle prefixes],
3758 gcc_cv_as_ix86_hle,,,
3759 [lock xacquire cmpxchg %esi, (%ecx)],,
3760 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3761 [Define if your assembler supports HLE prefixes.])])
3763 gcc_GAS_CHECK_FEATURE([swap suffix],
3764 gcc_cv_as_ix86_swap,,,
3765 [movl.s %esp, %ebp],,
3766 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3767 [Define if your assembler supports the swap suffix.])])
3769 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3770 gcc_cv_as_ix86_diff_sect_delta,,,
3778 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3779 [Define if your assembler supports the subtraction of symbols in different sections.])])
3781 # These two are used unconditionally by i386.[ch]; it is to be defined
3782 # to 1 if the feature is present, 0 otherwise.
3783 as_ix86_gotoff_in_data_opt=
3784 if test x$gas = xyes; then
3785 as_ix86_gotoff_in_data_opt="--32"
3787 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3788 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3789 [$as_ix86_gotoff_in_data_opt],
3795 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3796 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3797 [Define true if the assembler supports '.long foo@GOTOFF'.])
3799 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3800 gcc_cv_as_ix86_rep_lock_prefix,,,
3806 lock addl %edi, (%eax,%esi)
3807 lock orl $0, (%esp)],,
3808 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3809 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3811 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3812 gcc_cv_as_ix86_ud2,,,
3814 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3815 [Define if your assembler supports the 'ud2' mnemonic.])])
3817 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3818 gcc_cv_as_ix86_tlsgdplt,,,
3819 [call tls_gd@tlsgdplt],
3820 [if test x$gcc_cv_ld != x \
3821 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3822 gcc_cv_as_ix86_tlsgdplt=yes
3825 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3826 [Define if your assembler and linker support @tlsgdplt.])])
3828 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3829 gcc_cv_as_ix86_tlsldmplt,,,
3831 call tls_ld@tlsldmplt],
3832 [if test x$gcc_cv_ld != x \
3833 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3834 gcc_cv_as_ix86_tlsldmplt=yes
3837 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3838 [Define if your assembler and linker support @tlsldmplt.])])
3843 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3844 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3846 addl r15 = @ltoffx(x#), gp
3848 ld8.mov r16 = [[r15]], x#],,
3849 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3850 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3856 *-*-aix*) conftest_s=' .machine "pwr5"
3860 gcc_GAS_CHECK_FEATURE([.machine directive support],
3861 gcc_cv_as_machine_directive,,,
3862 [ .machine ppc7400])
3863 if test x$gcc_cv_as_machine_directive != xyes; then
3864 echo "*** This target requires an assembler supporting \".machine\"" >&2
3865 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3866 test x$build = x$target && exit 1
3870 *) conftest_s=' .machine power4
3875 gcc_GAS_CHECK_FEATURE([mfcr field support],
3876 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3878 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3879 [Define if your assembler supports mfcr field.])])
3882 *-*-aix*) conftest_s=' .machine "pwr5"
3885 *) conftest_s=' .machine power5
3890 gcc_GAS_CHECK_FEATURE([popcntb support],
3891 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3893 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3894 [Define if your assembler supports popcntb field.])])
3897 *-*-aix*) conftest_s=' .machine "pwr5x"
3900 *) conftest_s=' .machine power5
3905 gcc_GAS_CHECK_FEATURE([fp round support],
3906 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3908 [AC_DEFINE(HAVE_AS_FPRND, 1,
3909 [Define if your assembler supports fprnd.])])
3912 *-*-aix*) conftest_s=' .machine "pwr6"
3915 *) conftest_s=' .machine power6
3920 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3921 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3923 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3924 [Define if your assembler supports mffgpr and mftgpr.])])
3927 *-*-aix*) conftest_s=' .csect .text[[PR]]
3929 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3933 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3934 *) conftest_s=' .text
3936 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3939 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3940 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3942 [AC_DEFINE(HAVE_AS_REL16, 1,
3943 [Define if your assembler supports R_PPC_REL16 relocs.])])
3946 *-*-aix*) conftest_s=' .machine "pwr6"
3949 *) conftest_s=' .machine power6
3954 gcc_GAS_CHECK_FEATURE([compare bytes support],
3955 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3957 [AC_DEFINE(HAVE_AS_CMPB, 1,
3958 [Define if your assembler supports cmpb.])])
3961 *-*-aix*) conftest_s=' .machine "pwr6"
3964 *) conftest_s=' .machine power6
3969 gcc_GAS_CHECK_FEATURE([decimal float support],
3970 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3972 [AC_DEFINE(HAVE_AS_DFP, 1,
3973 [Define if your assembler supports DFP instructions.])])
3976 *-*-aix*) conftest_s=' .machine "pwr7"
3979 *) conftest_s=' .machine power7
3984 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3985 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3987 [AC_DEFINE(HAVE_AS_VSX, 1,
3988 [Define if your assembler supports VSX instructions.])])
3991 *-*-aix*) conftest_s=' .machine "pwr7"
3994 *) conftest_s=' .machine power7
3999 gcc_GAS_CHECK_FEATURE([popcntd support],
4000 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4002 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4003 [Define if your assembler supports POPCNTD instructions.])])
4006 *-*-aix*) conftest_s=' .machine "pwr8"
4007 .csect .text[[PR]]';;
4008 *) conftest_s=' .machine power8
4012 gcc_GAS_CHECK_FEATURE([power8 support],
4013 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4015 [AC_DEFINE(HAVE_AS_POWER8, 1,
4016 [Define if your assembler supports POWER8 instructions.])])
4019 *-*-aix*) conftest_s=' .csect .text[[PR]]
4021 *) conftest_s=' .text
4025 gcc_GAS_CHECK_FEATURE([lwsync support],
4026 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4028 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4029 [Define if your assembler supports LWSYNC instructions.])])
4032 *-*-aix*) conftest_s=' .machine "476"
4035 *) conftest_s=' .machine "476"
4040 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4041 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4043 [AC_DEFINE(HAVE_AS_DCI, 1,
4044 [Define if your assembler supports the DCI/ICI instructions.])])
4046 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4047 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4048 [.gnu_attribute 4,1],,
4049 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4050 [Define if your assembler supports .gnu_attribute.])])
4052 gcc_GAS_CHECK_FEATURE([tls marker support],
4053 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4054 [ bl __tls_get_addr(x@tlsgd)],,
4055 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4056 [Define if your assembler supports arg info for __tls_get_addr.])])
4060 gcc_GAS_CHECK_FEATURE([.ref support],
4061 gcc_cv_as_aix_ref, [2,21,0],,
4062 [ .csect stuff[[rw]]
4068 [AC_DEFINE(HAVE_AS_REF, 1,
4069 [Define if your assembler supports .ref])])
4075 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4076 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4077 [ lw $4,%gp_rel(foo)($4)],,
4078 [if test x$target_cpu_default = x
4079 then target_cpu_default=MASK_EXPLICIT_RELOCS
4080 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4082 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4083 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4084 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4085 [Define if the assembler understands -mno-shared.])])
4087 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4088 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4089 [.gnu_attribute 4,1],,
4090 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4091 [Define if your assembler supports .gnu_attribute.])])
4093 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4094 gcc_cv_as_mips_dtprelword, [2,18,0],,
4095 [.section .tdata,"awT",@progbits
4099 .dtprelword x+0x8000],,
4100 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4101 [Define if your assembler supports .dtprelword.])])
4103 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4104 gcc_cv_as_mips_dspr1_mult,,,
4114 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4115 [Define if your assembler supports DSPR1 mult.])])
4117 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4118 gcc_cv_as_ld_jalr_reloc=no
4119 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4120 if test $in_tree_ld = yes ; then
4121 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4122 && test $in_tree_ld_is_elf = yes; then
4123 gcc_cv_as_ld_jalr_reloc=yes
4125 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4126 echo ' .ent x' > conftest.s
4127 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4128 echo ' ld $25,%call16(y)($28)' >> conftest.s
4129 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4130 echo '1: jalr $25' >> conftest.s
4131 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4132 echo '1: jalr $25' >> conftest.s
4133 echo ' .end x' >> conftest.s
4134 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4135 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4136 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4137 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4138 gcc_cv_as_ld_jalr_reloc=yes
4144 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4145 if test x$target_cpu_default = x; then
4146 target_cpu_default=MASK_RELAX_PIC_CALLS
4148 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4151 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4153 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4154 [gcc_cv_ld_mips_personality_relaxation],
4155 [gcc_cv_ld_mips_personality_relaxation=no
4156 if test $in_tree_ld = yes ; then
4157 if test "$gcc_cv_gld_major_version" -eq 2 \
4158 -a "$gcc_cv_gld_minor_version" -ge 21 \
4159 -o "$gcc_cv_gld_major_version" -gt 2; then
4160 gcc_cv_ld_mips_personality_relaxation=yes
4162 elif test x$gcc_cv_as != x \
4163 -a x$gcc_cv_ld != x \
4164 -a x$gcc_cv_readelf != x ; then
4165 cat > conftest.s <<EOF
4167 .cfi_personality 0x80,indirect_ptr
4174 .section .data,"aw",@progbits
4178 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4179 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4180 if $gcc_cv_readelf -d conftest 2>&1 \
4181 | grep TEXTREL > /dev/null 2>&1; then
4183 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4184 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4187 gcc_cv_ld_mips_personality_relaxation=yes
4191 rm -f conftest.s conftest.o conftest])
4192 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4193 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4194 [Define if your linker can relax absolute .eh_frame personality
4195 pointers into PC-relative form.])
4200 # Mips and HP-UX need the GNU assembler.
4201 # Linux on IA64 might be able to use the Intel assembler.
4204 mips*-*-* | *-*-hpux* )
4205 if test x$gas_flag = xyes \
4206 || test x"$host" != x"$build" \
4207 || test ! -x "$gcc_cv_as" \
4208 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4211 echo "*** This configuration requires the GNU assembler" >&2
4217 # ??? Not all targets support dwarf2 debug_line, even within a version
4218 # of gas. Moreover, we need to emit a valid instruction to trigger any
4219 # info to the output file. So, as supported targets are added to gas 2.11,
4220 # add some instruction here to (also) show we expect this might work.
4221 # ??? Once 2.11 is released, probably need to add first known working
4222 # version to the per-target configury.
4224 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4225 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4235 if test x"$insn" != x; then
4237 .file 1 \"conftest.s\"
4240 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4241 gcc_cv_as_dwarf2_debug_line,
4242 [elf,2,11,0],, [$conftest_s],
4243 [if test x$gcc_cv_objdump != x \
4244 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4245 | grep debug_line > /dev/null 2>&1; then
4246 gcc_cv_as_dwarf2_debug_line=yes
4249 # The .debug_line file table must be in the exact order that
4250 # we specified the files, since these indices are also used
4251 # by DW_AT_decl_file. Approximate this test by testing if
4252 # the assembler bitches if the same index is assigned twice.
4253 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4254 gcc_cv_as_dwarf2_file_buggy,,,
4258 if test $gcc_cv_as_dwarf2_debug_line = yes \
4259 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4260 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4261 [Define if your assembler supports dwarf2 .file/.loc directives,
4262 and preserves file table indices exactly as given.])
4265 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4266 gcc_cv_as_gdwarf2_flag,
4267 [elf,2,11,0], [--gdwarf2], [$insn],,
4268 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4269 [Define if your assembler supports the --gdwarf2 option.])])
4271 gcc_GAS_CHECK_FEATURE([--gstabs option],
4272 gcc_cv_as_gstabs_flag,
4273 [elf,2,11,0], [--gstabs], [$insn],
4274 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4275 # and warns about it, but still exits successfully. So check for
4277 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4279 else gcc_cv_as_gstabs_flag=yes
4281 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4282 [Define if your assembler supports the --gstabs option.])])
4284 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4285 gcc_cv_as_debug_prefix_map_flag,
4286 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4287 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4288 [Define if your assembler supports the --debug-prefix-map option.])])
4291 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4294 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4295 [Define if your assembler supports .lcomm with an alignment field.])])
4297 AC_ARG_ENABLE(gnu-unique-object,
4298 [AS_HELP_STRING([--enable-gnu-unique-object],
4299 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4300 [case $enable_gnu_unique_object in
4302 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4303 Valid choices are 'yes' and 'no'.]) ;;
4305 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4307 [.type foo, '$target_type_format_char'gnu_unique_object],,
4308 # We need to unquote above to to use the definition from config.gcc.
4309 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4310 [[if test x$host = x$build -a x$host = x$target &&
4311 ldd --version 2>/dev/null &&
4312 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4313 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4314 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4315 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4316 if test "$glibcnum" -ge 2011 ; then
4317 enable_gnu_unique_object=yes
4320 if test x$enable_gnu_unique_object = xyes; then
4321 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4322 [Define if your assembler supports @gnu_unique_object.])
4325 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4326 [gcc_cv_as_line_zero],
4327 [gcc_cv_as_line_zero=no
4328 if test $in_tree_gas = yes; then
4329 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4330 elif test "x$gcc_cv_as" != x; then
4331 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4332 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4333 test "x`cat conftest.out`" = x
4335 gcc_cv_as_line_zero=yes
4337 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4338 cat conftest.s >&AS_MESSAGE_LOG_FD
4339 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4340 cat conftest.out >&AS_MESSAGE_LOG_FD
4342 rm -f conftest.o conftest.s conftest.out
4344 if test "x$gcc_cv_as_line_zero" = xyes; then
4345 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4346 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4349 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4350 gcc_cv_ld_eh_frame_hdr=no
4351 if test $in_tree_ld = yes ; then
4352 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4353 && test $in_tree_ld_is_elf = yes; then
4354 gcc_cv_ld_eh_frame_hdr=yes
4356 elif test x$gcc_cv_ld != x; then
4357 if echo "$ld_ver" | grep GNU > /dev/null; then
4358 # Check if linker supports --eh-frame-hdr option
4359 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4360 gcc_cv_ld_eh_frame_hdr=yes
4365 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4366 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4367 gcc_cv_ld_eh_frame_hdr=yes
4373 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4374 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4375 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4376 [Define if your linker supports .eh_frame_hdr.])
4378 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4380 AC_MSG_CHECKING(linker position independent executable support)
4382 if test $in_tree_ld = yes ; then
4383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4384 && test $in_tree_ld_is_elf = yes; then
4387 elif test x$gcc_cv_ld != x; then
4388 # Check if linker supports -pie option
4389 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4393 if test x"$gcc_cv_ld_pie" = xyes; then
4394 AC_DEFINE(HAVE_LD_PIE, 1,
4395 [Define if your linker supports -pie option.])
4397 AC_MSG_RESULT($gcc_cv_ld_pie)
4399 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4400 gcc_cv_ld_eh_gc_sections=no
4401 if test $in_tree_ld = yes ; then
4402 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4403 && test $in_tree_ld_is_elf = yes; then
4404 gcc_cv_ld_eh_gc_sections=yes
4406 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4407 cat > conftest.s <<EOF
4410 .type _start, @function
4413 .size _start, .-_start
4414 .section .text.foo,"ax",@progbits
4415 .type foo, @function
4419 .section .gcc_except_table.foo,"a",@progbits
4422 .section .eh_frame,"a",@progbits
4425 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4426 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4427 | grep "gc-sections option ignored" > /dev/null; then
4428 gcc_cv_ld_eh_gc_sections=no
4429 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4430 | grep gcc_except_table > /dev/null; then
4431 gcc_cv_ld_eh_gc_sections=yes
4432 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4433 if test x$gcc_cv_as_comdat_group != xyes; then
4434 gcc_cv_ld_eh_gc_sections=no
4435 cat > conftest.s <<EOF
4438 .type _start, @function
4441 .size _start, .-_start
4442 .section .gnu.linkonce.t.foo,"ax",@progbits
4443 .type foo, @function
4447 .section .gcc_except_table.foo,"a",@progbits
4450 .section .eh_frame,"a",@progbits
4453 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4454 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4455 | grep "gc-sections option ignored" > /dev/null; then
4456 gcc_cv_ld_eh_gc_sections=no
4457 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4458 | grep gcc_except_table > /dev/null; then
4459 gcc_cv_ld_eh_gc_sections=yes
4465 rm -f conftest.s conftest.o conftest
4469 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4470 gcc_cv_ld_eh_gc_sections=no
4473 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4474 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4475 [Define if your linker supports garbage collection of
4476 sections in presence of EH frames.])
4478 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4480 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4481 gcc_cv_ld_eh_gc_sections_bug=no
4482 if test $in_tree_ld = yes ; then
4483 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4484 && test $in_tree_ld_is_elf = yes; then
4485 gcc_cv_ld_eh_gc_sections_bug=yes
4487 elif test x$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
4488 gcc_cv_ld_eh_gc_sections_bug=yes
4489 cat > conftest.s <<EOF
4492 .type _start, @function
4495 .size _start, .-_start
4496 .section .text.startup.foo,"ax",@progbits
4497 .type foo, @function
4501 .section .gcc_except_table.foo,"a",@progbits
4504 .section .eh_frame,"a",@progbits
4507 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4508 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4509 | grep "gc-sections option ignored" > /dev/null; then
4511 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4512 | grep gcc_except_table > /dev/null; then
4513 gcc_cv_ld_eh_gc_sections_bug=no
4516 rm -f conftest.s conftest.o conftest
4518 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4519 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4520 [Define if your linker has buggy garbage collection of
4521 sections support when .text.startup.foo like sections are used.])
4523 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4529 AC_CACHE_CHECK(linker --as-needed support,
4530 gcc_cv_ld_as_needed,
4531 [gcc_cv_ld_as_needed=no
4532 if test $in_tree_ld = yes ; then
4533 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4534 && test $in_tree_ld_is_elf = yes; then
4535 gcc_cv_ld_as_needed=yes
4537 elif test x$gcc_cv_ld != x; then
4538 # Check if linker supports --as-needed and --no-as-needed options
4539 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4540 gcc_cv_ld_as_needed=yes
4544 if test x"$gcc_cv_ld_as_needed" = xyes; then
4545 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4546 [Define if your linker supports --as-needed and --no-as-needed options.])
4549 case "$target:$tm_file" in
4550 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4553 emul_name="-melf64lppc"
4556 emul_name="-melf64ppc"
4559 emul_name="-melf64ppc_fbsd"
4562 AC_CACHE_CHECK(linker support for omitting dot symbols,
4563 gcc_cv_ld_no_dot_syms,
4564 [gcc_cv_ld_no_dot_syms=no
4565 if test x"$ld_is_gold" = xyes; then
4566 gcc_cv_ld_no_dot_syms=yes
4567 elif test $in_tree_ld = yes ; then
4568 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4569 gcc_cv_ld_no_dot_syms=yes
4571 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4572 cat > conftest1.s <<EOF
4576 cat > conftest2.s <<EOF
4577 .section ".opd","aw"
4582 .quad .LEfoo,.TOC.@tocbase,0
4588 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4589 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4590 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4591 gcc_cv_ld_no_dot_syms=yes
4593 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4596 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4597 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4598 [Define if your PowerPC64 linker only needs function descriptor syms.])
4601 AC_CACHE_CHECK(linker large toc support,
4602 gcc_cv_ld_large_toc,
4603 [gcc_cv_ld_large_toc=no
4604 if test x"$ld_is_gold" = xyes; then
4605 gcc_cv_ld_large_toc=yes
4606 elif test $in_tree_ld = yes ; then
4607 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4608 gcc_cv_ld_large_toc=yes
4610 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4611 cat > conftest.s <<EOF
4612 .section ".tbss","awT",@nobits
4618 addis 9,13,ie0@got@tprel@ha
4619 ld 9,ie0@got@tprel@l(9)
4621 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4622 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4623 gcc_cv_ld_large_toc=yes
4625 rm -f conftest conftest.o conftest.s
4628 if test x"$gcc_cv_ld_large_toc" = xyes; then
4629 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4630 [Define if your PowerPC64 linker supports a large TOC.])
4637 AC_CACHE_CHECK(linker large toc support,
4638 gcc_cv_ld_large_toc,
4639 [gcc_cv_ld_large_toc=no
4640 if test x$gcc_cv_as != x ; then
4641 cat > conftest.s <<EOF
4651 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4652 gcc_cv_ld_large_toc=yes
4654 rm -f conftest conftest.o conftest.s
4657 if test x"$gcc_cv_ld_large_toc" = xyes; then
4658 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4659 [Define if your PowerPC64 linker supports a large TOC.])
4664 AC_CACHE_CHECK(linker --build-id support,
4666 [gcc_cv_ld_buildid=no
4667 if test $in_tree_ld = yes ; then
4668 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4669 "$gcc_cv_gld_minor_version" -ge 18 -o \
4670 "$gcc_cv_gld_major_version" -gt 2 \
4671 && test $in_tree_ld_is_elf = yes; then
4672 gcc_cv_ld_buildid=yes
4674 elif test x$gcc_cv_ld != x; then
4675 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4676 gcc_cv_ld_buildid=yes
4679 if test x"$gcc_cv_ld_buildid" = xyes; then
4680 AC_DEFINE(HAVE_LD_BUILDID, 1,
4681 [Define if your linker supports --build-id.])
4684 AC_ARG_ENABLE(linker-build-id,
4685 [AS_HELP_STRING([--enable-linker-build-id],
4686 [compiler will always pass --build-id to linker])],
4688 enable_linker_build_id=no)
4690 if test x"$enable_linker_build_id" = xyes; then
4691 if test x"$gcc_cv_ld_buildid" = xyes; then
4692 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4693 [Define if gcc should always pass --build-id to linker.])
4695 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4699 # In binutils 2.21, GNU ld gained support for new emulations fully
4700 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4701 AC_CACHE_CHECK(linker *_sol2 emulation support,
4702 gcc_cv_ld_sol2_emulation,
4703 [gcc_cv_ld_sol2_emulation=no
4704 if test $in_tree_ld = yes ; then
4705 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4706 "$gcc_cv_gld_minor_version" -ge 21 -o \
4707 "$gcc_cv_gld_major_version" -gt 2 \
4708 && test $in_tree_ld_is_elf = yes; then
4709 gcc_cv_ld_sol2_emulation=yes
4711 elif test x$gcc_cv_ld != x; then
4712 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4713 grep _sol2 > /dev/null; then
4714 gcc_cv_ld_sol2_emulation=yes
4717 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4718 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4719 [Define if your linker supports the *_sol2 emulations.])
4722 AC_CACHE_CHECK(linker --sysroot support,
4724 [gcc_cv_ld_sysroot=no
4725 if test $in_tree_ld = yes ; then
4726 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4727 gcc_cv_ld_sysroot=yes
4729 elif test x$gcc_cv_ld != x; then
4730 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4731 gcc_cv_ld_sysroot=yes
4734 if test x"$gcc_cv_ld_sysroot" = xyes; then
4735 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4736 [Define if your linker supports --sysroot.])
4739 if test x$with_sysroot = x && test x$host = x$target \
4740 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4741 && test "$prefix" != "NONE"; then
4742 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4743 [Define to PREFIX/include if cpp should also search that directory.])
4746 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4747 if test "x$with_headers" != x; then
4748 target_header_dir=$with_headers
4749 elif test "x$with_sysroot" = x; then
4750 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4751 elif test "x$with_build_sysroot" != "x"; then
4752 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4753 elif test "x$with_sysroot" = xyes; then
4754 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4756 target_header_dir="${with_sysroot}${native_system_header_dir}"
4759 target_header_dir=${native_system_header_dir}
4762 # Test for stack protector support in target C library.
4763 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4764 gcc_cv_libc_provides_ssp,
4765 [gcc_cv_libc_provides_ssp=no
4767 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4768 [# glibc 2.4 and later provides __stack_chk_fail and
4769 # either __stack_chk_guard, or TLS access to stack guard canary.
4770 if test -f $target_header_dir/features.h \
4771 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4772 $target_header_dir/features.h > /dev/null; then
4773 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4774 $target_header_dir/features.h > /dev/null; then
4775 gcc_cv_libc_provides_ssp=yes
4776 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4777 $target_header_dir/features.h > /dev/null \
4778 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4779 $target_header_dir/features.h > /dev/null; then
4780 gcc_cv_libc_provides_ssp=yes
4781 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4782 $target_header_dir/features.h > /dev/null && \
4783 test -f $target_header_dir/bits/uClibc_config.h && \
4784 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4785 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4786 gcc_cv_libc_provides_ssp=yes
4788 # all versions of Bionic support stack protector
4789 elif test -f $target_header_dir/sys/cdefs.h \
4790 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4791 $target_header_dir/sys/cdefs.h > /dev/null; then
4792 gcc_cv_libc_provides_ssp=yes
4796 # Avoid complicated tests (see
4797 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4798 # simply assert that glibc does provide this, which is true for all
4799 # realistically usable GNU/Hurd configurations.
4800 gcc_cv_libc_provides_ssp=yes;;
4801 *-*-darwin* | *-*-freebsd*)
4802 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4803 [echo "no __stack_chk_fail on this target"])
4805 *) gcc_cv_libc_provides_ssp=no ;;
4808 if test x$gcc_cv_libc_provides_ssp = xyes; then
4809 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4810 [Define if your target C library provides stack protector support])
4813 # Test for <sys/sdt.h> on the target.
4814 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4815 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4817 if test -f $target_header_dir/sys/sdt.h; then
4819 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4820 [Define if your target C library provides sys/sdt.h])
4822 AC_MSG_RESULT($have_sys_sdt_h)
4824 # Check if TFmode long double should be used by default or not.
4825 # Some glibc targets used DFmode long double, but with glibc 2.4
4826 # and later they can use TFmode.
4828 powerpc*-*-linux* | \
4832 AC_ARG_WITH(long-double-128,
4833 [AS_HELP_STRING([--with-long-double-128],
4834 [use 128-bit long double by default])],
4835 gcc_cv_target_ldbl128="$with_long_double_128",
4836 [[gcc_cv_target_ldbl128=no
4837 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4838 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4839 && gcc_cv_target_ldbl128=yes
4843 if test x$gcc_cv_target_ldbl128 = xyes; then
4844 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4845 [Define if TFmode long double should be the default])
4848 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4849 gcc_cv_target_dl_iterate_phdr=unknown
4851 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4852 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4853 # libdl there, both complicating its use and breaking compatibility
4854 # between Solaris 10 updates.
4855 *-*-solaris2.1[[1-9]]*)
4856 # <link.h> needs both a dl_iterate_phdr declaration and support for
4857 # compilation with largefile support.
4858 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4859 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4860 gcc_cv_target_dl_iterate_phdr=yes
4862 gcc_cv_target_dl_iterate_phdr=no
4866 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4867 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4868 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4869 [Define if your target C library provides the `dl_iterate_phdr' function.])
4871 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4873 # We no longer support different GC mechanisms. Emit an error if
4874 # the user configures with --with-gc.
4876 [AS_HELP_STRING([--with-gc={page,zone}],
4877 [this option is not supported anymore. It used to choose
4878 the garbage collection mechanism to use with the compiler])],
4879 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4882 # Libraries to use on the host. This will normally be set by the top
4883 # level Makefile. Here we simply capture the value for our Makefile.
4884 if test -z "${HOST_LIBS+set}"; then
4889 # Use the system's zlib library.
4891 zlibinc="-I\$(srcdir)/../zlib"
4892 AC_ARG_WITH(system-zlib,
4893 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4900 dnl Very limited version of automake's enable-maintainer-mode
4902 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4903 dnl maintainer-mode is disabled by default
4904 AC_ARG_ENABLE(maintainer-mode,
4905 [AS_HELP_STRING([--enable-maintainer-mode],
4906 [enable make rules and dependencies not useful
4907 (and sometimes confusing) to the casual installer])],
4908 maintainer_mode=$enableval,
4911 AC_MSG_RESULT($maintainer_mode)
4913 if test "$maintainer_mode" = "yes"; then
4924 # Make empty files to contain the specs and options for each language.
4925 # Then add #include lines to for a compiler that has specs and/or options.
4931 # These (without "all_") are set in each config-lang.in.
4932 # `language' must be a single word so is spelled singularly.
4935 all_outputs='Makefile'
4936 # List of language makefile fragments.
4938 # Additional files for gengtype
4939 all_gtfiles="$target_gtfiles"
4941 # These are the languages that are set in --enable-languages,
4942 # and are available in the GCC tree.
4943 all_selected_languages=
4945 # Add the language fragments.
4946 # Languages are added via two mechanisms. Some information must be
4947 # recorded in makefile variables, these are defined in config-lang.in.
4948 # We accumulate them and plug them into the main Makefile.
4949 # The other mechanism is a set of hooks for each of the main targets
4950 # like `clean', `install', etc.
4952 language_hooks="Make-hooks"
4954 for lang in ${srcdir}/*/config-lang.in
4957 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4959 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4960 if test "x$lang_alias" = x
4962 echo "$lang doesn't set \$language." 1>&2
4965 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4966 subdirs="$subdirs $subdir"
4968 # $gcc_subdir is where the gcc integration files are to be found
4969 # for a language, both for internal compiler purposes (compiler
4970 # sources implementing front-end to GCC tree converters), and for
4971 # build infrastructure purposes (Make-lang.in, etc.)
4973 # This will be <subdir> (relative to $srcdir) if a line like
4974 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4975 # is found in <langdir>/config-lang.in, and will remain <langdir>
4978 # Except for the language alias (fetched above), the regular
4979 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4980 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4981 # only this and the language alias.
4983 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4984 if [ "$gcc_subdir" = "" ]; then
4985 gcc_subdir="$subdir"
4988 case ",$enable_languages," in
4990 all_selected_languages="$all_selected_languages $lang_alias"
4991 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4992 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5004 . ${srcdir}/$gcc_subdir/config-lang.in
5005 if test "x$language" = x
5007 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5012 case ",$enable_languages," in
5015 for i in $subdir_requires; do
5016 test -f "${srcdir}/$i/config-lang.in" && continue
5024 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5025 if test -f $srcdir/$gcc_subdir/lang.opt; then
5026 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5027 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5029 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5030 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5032 all_languages="$all_languages $language"
5033 all_compilers="$all_compilers $compilers"
5034 all_outputs="$all_outputs $outputs"
5035 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5036 case ",$enable_languages," in
5038 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5040 AC_SUBST(enable_lto)
5047 for language in $all_selected_languages
5049 check_languages="$check_languages check-$language"
5052 # We link each language in with a set of hooks, reached indirectly via
5053 # lang.${target}. Only do so for selected languages.
5057 target_list="all.cross start.encap rest.encap tags \
5058 install-common install-man install-info install-pdf install-html dvi \
5059 pdf html uninstall info man srcextra srcman srcinfo \
5060 mostlyclean clean distclean maintainer-clean install-plugin"
5062 for t in $target_list
5065 for lang in $all_selected_languages
5069 echo "lang.$t: $x" >> Make-hooks
5073 # Option include files
5076 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5077 option_includes="option-includes.mk"
5078 AC_SUBST_FILE(option_includes)
5086 echo "dir ." > .gdbinit
5087 echo "dir ${srcdir}" >> .gdbinit
5088 if test x$gdb_needs_out_file_path = xyes
5090 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5092 if test "x$subdirs" != x; then
5095 echo "dir ${srcdir}/$s" >> .gdbinit
5098 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5100 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5101 AC_SUBST(gcc_tooldir)
5104 # Find a directory in which to install a shared libgcc.
5106 AC_ARG_ENABLE(version-specific-runtime-libs,
5107 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5108 [specify that runtime libraries should be
5109 installed in a compiler-specific directory])])
5111 # Set default prefix canonicalization.
5113 AC_ARG_ENABLE(canonical-prefixes,
5114 [ --enable-canonical-prefixes
5115 enable or disable prefix canonicalization],
5117 enable_canonical_prefixes=yes)
5118 if test x"$enable_canonical_prefixes" = xyes; then
5119 AC_DEFINE(ENABLE_CANONICAL_PREFIXES,
5120 1, [Define to enable prefix canonicalization.])
5123 # Substitute configuration variables
5126 AC_SUBST(all_compilers)
5127 AC_SUBST(all_gtfiles)
5128 AC_SUBST(all_lang_makefrags)
5129 AC_SUBST(all_languages)
5130 AC_SUBST(all_selected_languages)
5131 AC_SUBST(build_exeext)
5132 AC_SUBST(build_install_headers_dir)
5133 AC_SUBST(build_xm_file_list)
5134 AC_SUBST(build_xm_include_list)
5135 AC_SUBST(build_xm_defines)
5136 AC_SUBST(build_file_translate)
5137 AC_SUBST(check_languages)
5138 AC_SUBST(cpp_install_dir)
5139 AC_SUBST(xmake_file)
5140 AC_SUBST(tmake_file)
5141 AC_SUBST(TM_ENDIAN_CONFIG)
5142 AC_SUBST(TM_MULTILIB_CONFIG)
5143 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5144 AC_SUBST(extra_gcc_objs)
5145 AC_SUBST(user_headers_inc_next_pre)
5146 AC_SUBST(user_headers_inc_next_post)
5147 AC_SUBST(extra_headers_list)
5148 AC_SUBST(extra_objs)
5149 AC_SUBST(extra_programs)
5150 AC_SUBST(float_h_file)
5151 AC_SUBST(gcc_config_arguments)
5152 AC_SUBST(gcc_gxx_include_dir)
5153 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5154 AC_SUBST(host_exeext)
5155 AC_SUBST(host_xm_file_list)
5156 AC_SUBST(host_xm_include_list)
5157 AC_SUBST(host_xm_defines)
5158 AC_SUBST(out_host_hook_obj)
5160 AC_SUBST(lang_opt_files)
5161 AC_SUBST(lang_specs_files)
5162 AC_SUBST(lang_tree_files)
5163 AC_SUBST(local_prefix)
5165 AC_SUBST(objc_boehm_gc)
5167 AC_SUBST(out_object_file)
5168 AC_SUBST(common_out_file)
5169 AC_SUBST(common_out_object_file)
5170 AC_SUBST(tm_file_list)
5171 AC_SUBST(tm_include_list)
5172 AC_SUBST(tm_defines)
5173 AC_SUBST(tm_p_file_list)
5174 AC_SUBST(tm_p_include_list)
5175 AC_SUBST(xm_file_list)
5176 AC_SUBST(xm_include_list)
5177 AC_SUBST(xm_defines)
5178 AC_SUBST(use_gcc_stdint)
5179 AC_SUBST(c_target_objs)
5180 AC_SUBST(cxx_target_objs)
5181 AC_SUBST(fortran_target_objs)
5182 AC_SUBST(target_cpu_default)
5184 AC_SUBST_FILE(language_hooks)
5187 if test x${build} = x${host} ; then
5188 if test x${host} = x${target} ; then
5189 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5191 echo "Links are now set up to build a cross-compiler" 1>&2
5192 echo " from ${host} to ${target}." 1>&2
5195 if test x${host} = x${target} ; then
5196 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5197 echo " for ${target}." 1>&2
5199 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5200 echo " from ${host} to ${target}." 1>&2
5204 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5205 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5207 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5208 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5210 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5211 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5212 if test "x${CLOOGLIBS}" != "x" ; then
5213 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5216 # Check for plugin support
5217 AC_ARG_ENABLE(plugin,
5218 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5219 enable_plugin=$enableval,
5220 enable_plugin=yes; default_plugin=yes)
5226 if test x$build = x$host; then
5227 export_sym_check="nm${exeext} -g"
5228 elif test x$host = x$target; then
5229 export_sym_check="$gcc_cv_nm -g"
5235 if test x$build = x$host; then
5236 export_sym_check="objdump${exeext} -T"
5237 elif test x$host = x$target; then
5238 export_sym_check="$gcc_cv_objdump -T"
5245 if test x"$enable_plugin" = x"yes"; then
5247 AC_MSG_CHECKING([for exported symbols])
5248 if test "x$export_sym_check" != x; then
5249 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5250 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5251 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5252 : # No need to use a flag
5253 AC_MSG_RESULT([yes])
5255 AC_MSG_RESULT([yes])
5256 AC_MSG_CHECKING([for -rdynamic])
5257 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5258 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5260 pluginlibs="-rdynamic"
5265 AC_MSG_RESULT([$plugin_rdynamic])
5268 AC_MSG_RESULT([unable to check])
5273 AC_SEARCH_LIBS([dlopen], [dl])
5274 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5275 pluginlibs="$pluginlibs -ldl"
5279 # Check that we can build shared objects with -fPIC -shared
5280 saved_LDFLAGS="$LDFLAGS"
5281 saved_CFLAGS="$CFLAGS"
5284 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5285 CFLAGS="$CFLAGS -fPIC"
5286 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5289 CFLAGS="$CFLAGS -fPIC"
5290 LDFLAGS="$LDFLAGS -fPIC -shared"
5293 AC_MSG_CHECKING([for -fPIC -shared])
5295 [extern int X;],[return X == 0;],
5296 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5297 [AC_MSG_RESULT([no]); have_pic_shared=no])
5298 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5302 LDFLAGS="$saved_LDFLAGS"
5303 CFLAGS="$saved_CFLAGS"
5305 # If plugin support had been requested but not available, fail.
5306 if test x"$enable_plugin" = x"no" ; then
5307 if test x"$default_plugin" != x"yes"; then
5309 Building GCC with plugin support requires a host that supports
5310 -fPIC, -shared, -ldl and -rdynamic.])
5315 AC_SUBST(pluginlibs)
5316 AC_SUBST(enable_plugin)
5317 if test x"$enable_plugin" = x"yes"; then
5318 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5322 AC_ARG_ENABLE(libquadmath-support,
5323 [AS_HELP_STRING([--disable-libquadmath-support],
5324 [disable libquadmath support for Fortran])],
5325 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5326 ENABLE_LIBQUADMATH_SUPPORT=yes)
5327 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5328 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5329 [Define to 1 to enable libquadmath support])
5333 warn_frame_larger_than_extra_text=
5334 AC_ARG_WITH(warn-frame-larger-than-extra-text,
5335 [ --with-warn-frame-larger-than-extra-text=TEXT
5336 specifies extra text for frame size warnings],
5337 [case "${withval}" in
5338 yes) AC_MSG_ERROR(bad value ${withval} given for frame size warning text) ;;
5340 *) warn_frame_larger_than_extra_text="$withval" ;;
5342 AC_DEFINE_UNQUOTED(WARN_FRAME_LARGER_THAN_EXTRA_TEXT,
5343 "$warn_frame_larger_than_extra_text",
5344 [Define to be extra text for frame size warnings.])
5347 # Specify what hash style to use by default.
5348 AC_ARG_WITH([linker-hash-style],
5349 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5350 [specify the linker hash style])],
5351 [case x"$withval" in
5353 LINKER_HASH_STYLE=sysv
5356 LINKER_HASH_STYLE=gnu
5359 LINKER_HASH_STYLE=both
5362 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5365 [LINKER_HASH_STYLE=''])
5366 if test x"${LINKER_HASH_STYLE}" != x; then
5367 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5368 [The linker hash style])
5371 # Configure the subdirectories
5372 # AC_CONFIG_SUBDIRS($subdirs)
5374 # Create the Makefile
5375 # and configure language subdirectories
5376 AC_CONFIG_FILES($all_outputs)
5378 AC_CONFIG_COMMANDS([default],
5380 case ${CONFIG_HEADERS} in
5381 *auto-host.h:config.in*)
5384 # Make sure all the subdirs exist.
5385 for d in $subdirs doc build common c-family
5387 test -d $d || mkdir $d
5390 [subdirs='$subdirs'])