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 if test "x$prefix" = xNONE; then
768 test_prefix=/usr/local
772 if test "x$exec_prefix" = xNONE; then
773 test_exec_prefix=$test_prefix
775 test_exec_prefix=$exec_prefix
779 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
780 [search for usr/lib, usr/include, et al, within DIR])],
782 case ${with_sysroot} in
783 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
784 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
787 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
788 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
790 case ${TARGET_SYSTEM_ROOT} in
791 "${test_prefix}"|"${test_prefix}/"*|\
792 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
793 '${prefix}'|'${prefix}/'*|\
794 '${exec_prefix}'|'${exec_prefix}/'*)
795 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
796 TARGET_SYSTEM_ROOT_DEFINE="$t"
801 TARGET_SYSTEM_ROOT_DEFINE=
802 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
804 AC_SUBST(TARGET_SYSTEM_ROOT)
805 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
806 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
809 [AS_HELP_STRING([--with-specs=SPECS],
810 [add SPECS to driver command-line processing])],
811 [CONFIGURE_SPECS=$withval],
814 AC_SUBST(CONFIGURE_SPECS)
816 ACX_PKGVERSION([GCC])
817 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
819 # Sanity check enable_languages in case someone does not run the toplevel
820 # configure # script.
821 AC_ARG_ENABLE(languages,
822 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
823 [case ,${enable_languages}, in
825 # go safe -- we cannot be much sure without the toplevel
827 # analysis of which target libs are present and usable
831 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
836 enable_languages=c,${enable_languages}
839 [enable_languages=c])
841 AC_ARG_WITH(multilib-list,
842 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
844 with_multilib_list=default)
846 # -------------------------
847 # Checks for other programs
848 # -------------------------
852 # Find some useful tools
854 # We need awk to create options.c and options.h.
855 # Bail out if it's missing.
857 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='${objdir}/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='${objdir}/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
943 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
944 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
945 sys/resource.h sys/param.h sys/times.h sys/stat.h \
946 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
948 # Check for thread headers.
949 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
950 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
952 # These tests can't be done till we know if we have limits.h.
956 # ----------------------
957 # Checks for C++ headers
958 # ----------------------
960 dnl Autoconf will give an error in the configure script if there is no
961 dnl C++ preprocessor. Hack to prevent that.
962 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
964 m4_popdef([AC_MSG_ERROR])[]dnl
968 AC_CHECK_HEADERS(unordered_map)
969 AC_CHECK_HEADERS(tr1/unordered_map)
970 AC_CHECK_HEADERS(ext/hash_map)
975 # Dependency checking.
980 AC_CONFIG_COMMANDS([gccdepdir],[
981 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
982 for lang in $subdirs c-family common
984 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
985 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
987 ZW_PROG_COMPILER_DEPENDENCIES([CC])
995 # These libraries may be used by collect2.
996 # We may need a special search path to get them linked.
997 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
999 for libs in '' -lld -lmld \
1000 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1001 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1004 AC_TRY_LINK_FUNC(ldopen,
1005 [gcc_cv_collect2_libs="$libs"; break])
1008 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1009 case $gcc_cv_collect2_libs in
1011 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1013 AC_SUBST(COLLECT2_LIBS)
1015 # When building Ada code on Alpha, we need exc_resume which is usually in
1016 # -lexc. So test for it.
1019 AC_SEARCH_LIBS(exc_resume, exc)
1022 AC_SUBST(GNAT_LIBEXC)
1024 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1027 AC_SEARCH_LIBS(kstat_open, kstat)
1028 EXTRA_GCC_LIBS="$LIBS"
1030 AC_SUBST(EXTRA_GCC_LIBS)
1032 # Some systems put ldexp and frexp in libm instead of libc; assume
1033 # they're both in the same place. jcf-dump needs them.
1036 AC_SEARCH_LIBS(ldexp, m)
1041 # Use <inttypes.h> only if it exists,
1042 # doesn't clash with <sys/types.h>, and declares intmax_t.
1043 AC_MSG_CHECKING(for inttypes.h)
1044 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1045 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1046 [[#include <sys/types.h>
1047 #include <inttypes.h>]],
1048 [[intmax_t i = -1;]])],
1049 [gcc_cv_header_inttypes_h=yes],
1050 [gcc_cv_header_inttypes_h=no])])
1051 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1052 if test $gcc_cv_header_inttypes_h = yes; then
1053 AC_DEFINE(HAVE_INTTYPES_H, 1,
1054 [Define if you have a working <inttypes.h> header file.])
1057 dnl Disabled until we have a complete test for buggy enum bitfields.
1058 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1060 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1061 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1062 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1063 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1064 putchar_unlocked putc_unlocked)
1065 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1066 sysconf strsignal getrusage nl_langinfo \
1067 gettimeofday mbstowcs wcswidth mmap setlocale \
1068 gcc_UNLOCKED_FUNCS madvise)
1070 if test x$ac_cv_func_mbstowcs = xyes; then
1071 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1072 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1078 [gcc_cv_func_mbstowcs_works=yes],
1079 [gcc_cv_func_mbstowcs_works=no],
1080 [gcc_cv_func_mbstowcs_works=yes])])
1081 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1082 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1083 [Define this macro if mbstowcs does not crash when its
1084 first argument is NULL.])
1088 AC_CHECK_TYPE(ssize_t, int)
1089 AC_CHECK_TYPE(caddr_t, char *)
1091 GCC_AC_FUNC_MMAP_BLACKLIST
1095 # Under VMS, vfork works very differently than on Unix. The standard test
1096 # won't work, and it isn't easily adaptable. It makes more sense to
1098 ac_cv_func_vfork_works=yes
1103 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1104 # iconv() prototype.
1109 # Until we have in-tree GNU iconv:
1111 AC_SUBST(LIBICONV_DEP)
1117 # We will need to find libiberty.h and ansidecl.h
1118 saved_CFLAGS="$CFLAGS"
1119 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1120 saved_CXXFLAGS="$CXXFLAGS"
1121 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1122 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1123 strsignal strstr stpcpy strverscmp \
1124 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1125 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1126 #include "ansidecl.h"
1127 #include "system.h"])
1129 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1130 #include "ansidecl.h"
1132 #ifdef HAVE_SYS_RESOURCE_H
1133 #include <sys/resource.h>
1137 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1138 #include "ansidecl.h"
1140 #ifdef HAVE_SYS_RESOURCE_H
1141 #include <sys/resource.h>
1143 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1144 [Define to `long' if <sys/resource.h> doesn't define.])])
1146 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1147 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1148 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1149 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1150 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1151 #include "ansidecl.h"
1160 gcc_AC_CHECK_DECLS(times, , ,[
1161 #include "ansidecl.h"
1163 #ifdef HAVE_SYS_TIMES_H
1164 #include <sys/times.h>
1168 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1169 #include "ansidecl.h"
1174 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1177 gcc_AC_CHECK_DECLS(madvise, , ,[
1178 #include "ansidecl.h"
1183 # More time-related stuff.
1184 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1185 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1186 #include "ansidecl.h"
1188 #ifdef HAVE_SYS_TIMES_H
1189 #include <sys/times.h>
1191 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1192 if test $ac_cv_struct_tms = yes; then
1193 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1194 [Define if <sys/times.h> defines struct tms.])
1197 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1198 # revisit after autoconf 2.50.
1199 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1200 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1201 #include "ansidecl.h"
1203 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1204 if test $gcc_cv_type_clock_t = yes; then
1205 AC_DEFINE(HAVE_CLOCK_T, 1,
1206 [Define if <time.h> defines clock_t.])
1209 # Check if F_SETLKW is supported by fcntl.
1210 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1211 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1212 #include <fcntl.h>]], [[
1218 return fcntl (1, F_SETLKW, &fl);]])],
1219 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1220 if test $ac_cv_f_setlkw = yes; then
1221 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1222 [Define if F_SETLKW supported by fcntl.])
1225 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1226 CFLAGS="$saved_CFLAGS"
1227 CXXFLAGS="$saved_CXXFLAGS"
1229 # mkdir takes a single argument on some systems.
1230 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1238 # With Setjmp/Longjmp based exception handling.
1239 AC_ARG_ENABLE(sjlj-exceptions,
1240 [AS_HELP_STRING([--enable-sjlj-exceptions],
1241 [arrange to use setjmp/longjmp exception handling])],
1244 if test $enableval != yes; then
1245 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1250 force_sjlj_exceptions=yes],
1253 force_sjlj_exceptions=yes
1257 force_sjlj_exceptions=no
1260 if test $force_sjlj_exceptions = yes; then
1261 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1262 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1263 [Define 0/1 to force the choice for exception handling model.])
1266 # --------------------------------------------------------
1267 # Build, host, and target specific configuration fragments
1268 # --------------------------------------------------------
1270 # Collect build-machine-specific information.
1271 . ${srcdir}/config.build
1273 # Collect host-machine-specific information.
1274 . ${srcdir}/config.host
1278 # Collect target-machine-specific information.
1279 . ${srcdir}/config.gcc
1281 extra_objs="${host_extra_objs} ${extra_objs}"
1282 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1284 # Default the target-machine variables that were not explicitly set.
1285 if test x"$tm_file" = x
1286 then tm_file=$cpu_type/$cpu_type.h; fi
1288 if test x"$extra_headers" = x
1289 then extra_headers=; fi
1291 if test x$md_file = x
1292 then md_file=$cpu_type/$cpu_type.md; fi
1294 if test x$out_file = x
1295 then out_file=$cpu_type/$cpu_type.c; fi
1297 if test x"$tmake_file" = x
1298 then tmake_file=$cpu_type/t-$cpu_type
1301 # Support --enable-initfini-array.
1302 if test x$enable_initfini_array != xno; then
1303 tm_file="${tm_file} initfini-array.h"
1306 if test x"$dwarf2" = xyes
1307 then tm_file="$tm_file tm-dwarf2.h"
1310 # Say what files are being used for the output code and MD file.
1311 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1312 echo "Using \`$srcdir/config/$md_file' as machine description file."
1314 # If any of the xm_file variables contain nonexistent files, warn
1315 # about them and drop them.
1318 for x in $build_xm_file; do
1319 if test -f $srcdir/config/$x
1321 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1327 for x in $host_xm_file; do
1328 if test -f $srcdir/config/$x
1330 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1336 for x in $xm_file; do
1337 if test -f $srcdir/config/$x
1339 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1345 for f in $tm_file; do
1348 if test $count = ax; then
1349 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1351 echo "Using the following target machine macro files:"
1352 for f in $tm_file; do
1353 echo " $srcdir/config/$f"
1357 if test x$need_64bit_hwint = xyes; then
1358 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1359 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1362 if test x$use_long_long_for_widest_fast_int = xyes; then
1363 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1364 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1365 efficiently supported by the host hardware.])
1368 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1369 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1371 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1372 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1375 for f in $host_xm_file; do
1378 if test $count = a; then
1380 elif test $count = ax; then
1381 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1383 echo "Using the following host machine macro files:"
1384 for f in $host_xm_file; do
1385 echo " $srcdir/config/$f"
1388 echo "Using ${out_host_hook_obj} for host machine hooks."
1390 if test "$host_xm_file" != "$build_xm_file"; then
1392 for f in $build_xm_file; do
1395 if test $count = a; then
1397 elif test $count = ax; then
1398 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1400 echo "Using the following build machine macro files:"
1401 for f in $build_xm_file; do
1402 echo " $srcdir/config/$f"
1407 if test -n "$configured_native_system_header_dir"; then
1408 native_system_header_dir=$configured_native_system_header_dir
1410 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1411 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1415 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1416 gcc_cv_mcontext_underscores,
1418 #include <sys/cdefs.h>
1419 #include <sys/signal.h>
1420 #include <ucontext.h>
1421 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1423 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1424 if test $gcc_cv_mcontext_underscores = yes; then
1425 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1426 [mcontext_t fields start with __])
1435 # Check if a valid thread package
1436 case ${enable_threads} in
1439 target_thread_file='single'
1443 target_thread_file='single'
1445 aix | dce | lynx | mipssde | posix | rtems | \
1446 single | tpf | vxworks | win32)
1447 target_thread_file=${enable_threads}
1450 echo "${enable_threads} is an unknown thread package" 1>&2
1455 if test x${thread_file} = x; then
1456 # No thread file set by target-specific clauses in config.gcc,
1457 # so use file chosen by default logic above
1458 thread_file=${target_thread_file}
1466 if test x$enable___cxa_atexit = xyes || \
1467 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1468 if test x$host = x$target; then
1470 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1471 # keyed to flag_use_cxa_atexit
1479 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1480 [echo "__cxa_atexit can't be enabled on this target"])
1484 # We can't check for __cxa_atexit when building a cross, so assume
1488 if test x$use_cxa_atexit = xyes; then
1489 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1490 [Define if you want to use __cxa_atexit, rather than atexit, to
1491 register C++ destructors for local statics and global objects.
1492 This is essential for fully standards-compliant handling of
1493 destructors, but requires __cxa_atexit in libc.])
1497 # Look for a file containing extra machine modes.
1498 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1499 extra_modes_file='$(srcdir)'/config/${extra_modes}
1500 AC_SUBST(extra_modes_file)
1501 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1502 [Define to the name of a file containing a list of extra machine modes
1503 for this architecture.])
1506 # Convert extra_options into a form suitable for Makefile use.
1509 for f in $extra_options; do
1510 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1511 all_opt_files="$all_opt_files $srcdir/config/$f"
1513 AC_SUBST(extra_opt_files)
1515 # auto-host.h is the file containing items generated by autoconf and is
1516 # the first file included by config.h.
1517 # If host=build, it is correct to have bconfig include auto-host.h
1518 # as well. If host!=build, we are in error and need to do more
1519 # work to find out the build config parameters.
1520 if test x$host = x$build
1522 build_auto=auto-host.h
1524 # We create a subdir, then run autoconf in the subdir.
1525 # To prevent recursion we set host and build for the new
1526 # invocation of configure to the build for this invocation
1533 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1534 *) realsrcdir=../${srcdir};;
1536 saved_CFLAGS="${CFLAGS}"
1537 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1538 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1539 ${realsrcdir}/configure \
1540 --enable-languages=${enable_languages-all} \
1541 --target=$target_alias --host=$build_alias --build=$build_alias
1542 CFLAGS="${saved_CFLAGS}"
1544 # We just finished tests for the build machine, so rename
1545 # the file auto-build.h in the gcc directory.
1546 mv auto-host.h ../auto-build.h
1549 build_auto=auto-build.h
1551 AC_SUBST(build_subdir)
1553 tm_file="${tm_file} defaults.h"
1554 tm_p_file="${tm_p_file} tm-preds.h"
1555 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1556 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1557 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1558 # put this back in temporarily.
1559 xm_file="auto-host.h ansidecl.h ${xm_file}"
1566 # Compile in configure arguments.
1567 if test -f configargs.h ; then
1568 # Being re-configured.
1569 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1570 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1572 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1575 # Double all backslashes and backslash all quotes to turn
1576 # gcc_config_arguments into a C string.
1577 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1578 $gcc_config_arguments
1580 gcc_config_arguments_str=`cat conftest.out`
1583 cat > configargs.h <<EOF
1584 /* Generated automatically. */
1585 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1586 static const char thread_model[] = "$thread_file";
1588 static const struct {
1589 const char *name, *value;
1590 } configure_default_options[] = $configure_default_options;
1595 gcc_BASEVER=`cat $srcdir/BASE-VER`
1596 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1597 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1598 if test -f $srcdir/REVISION ; then
1599 gcc_REVISION=`cat $srcdir/REVISION`
1603 cat > plugin-version.h <<EOF
1604 #include "configargs.h"
1606 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1607 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1608 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1609 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1611 static char basever[] = "$gcc_BASEVER";
1612 static char datestamp[] = "$gcc_DATESTAMP";
1613 static char devphase[] = "$gcc_DEVPHASE";
1614 static char revision[] = "$gcc_REVISION";
1616 /* FIXME plugins: We should make the version information more precise.
1617 One way to do is to add a checksum. */
1619 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1621 configuration_arguments};
1625 # Internationalization
1626 ZW_GNU_GETTEXT_SISTER_DIR
1628 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1629 # -liconv on the link line twice.
1630 case "$LIBINTL" in *$LIBICONV*)
1634 AC_ARG_ENABLE(secureplt,
1635 [AS_HELP_STRING([--enable-secureplt],
1636 [enable -msecure-plt by default for PowerPC])],
1639 AC_ARG_ENABLE(leading-mingw64-underscores,
1640 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1641 [enable leading underscores on 64 bit mingw targets]),
1643 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1644 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1645 [Define if we should use leading underscore on 64 bit mingw targets])])
1648 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1651 AC_ARG_ENABLE(frame-pointer,
1652 [AS_HELP_STRING([--enable-frame-pointer],
1653 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1656 linux* | darwin[[8912]]*)
1657 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1659 enable_frame_pointer=no
1662 enable_frame_pointer=yes
1667 # Windows32 Registry support for specifying GCC installation paths.
1668 AC_ARG_ENABLE(win32-registry,
1669 [AS_HELP_STRING([--disable-win32-registry],
1670 [disable lookup of installation paths in the
1671 Registry on Windows hosts])
1672 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1673 AS_HELP_STRING([--enable-win32-registry=KEY],
1674 [use KEY instead of GCC version as the last portion
1675 of the registry key])],,)
1678 win32 | pe | cygwin* | mingw32* | uwin*)
1679 if test "x$enable_win32_registry" != xno; then
1680 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1683 if test "x$enable_win32_registry" != xno; then
1684 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1685 [Define to 1 if installation paths should be looked up in the Windows
1686 Registry. Ignored on non-Windows hosts.])
1688 if test "x$enable_win32_registry" != xyes \
1689 && test "x$enable_win32_registry" != x; then
1690 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1691 [Define to be the last component of the Windows registry key under which
1692 to look for installation paths. The full key used will be
1693 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1694 The default is the GCC version number.])
1700 # Get an absolute path to the GCC top-level source directory
1701 holddir=`${PWDCMD-pwd}`
1703 topdir=`${PWDCMD-pwd}`
1706 # Conditionalize the makefile for this host machine.
1708 for f in ${host_xmake_file}
1710 if test -f ${srcdir}/config/$f
1712 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1716 # Conditionalize the makefile for this target machine.
1718 for f in ${tmake_file}
1720 if test -f ${srcdir}/config/$f
1722 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1725 tmake_file="${tmake_file_}"
1727 out_object_file=`basename $out_file .c`.o
1728 common_out_object_file=`basename $common_out_file .c`.o
1730 tm_file_list="options.h"
1731 tm_include_list="options.h insn-constants.h"
1732 for f in $tm_file; do
1735 f=`echo $f | sed 's/^..//'`
1736 tm_file_list="${tm_file_list} $f"
1737 tm_include_list="${tm_include_list} $f"
1740 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1741 tm_include_list="${tm_include_list} $f"
1744 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1745 tm_include_list="${tm_include_list} config/$f"
1752 for f in $tm_p_file; do
1755 tm_p_file_list="${tm_p_file_list} $f"
1756 tm_p_include_list="${tm_p_include_list} $f"
1759 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1760 tm_p_include_list="${tm_p_include_list} config/$f"
1766 for f in $xm_file; do
1769 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1770 xm_include_list="${xm_include_list} $f"
1773 xm_file_list="${xm_file_list} $f"
1774 xm_include_list="${xm_include_list} $f"
1777 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1778 xm_include_list="${xm_include_list} config/$f"
1784 host_xm_include_list=
1785 for f in $host_xm_file; do
1788 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1789 host_xm_include_list="${host_xm_include_list} $f"
1792 host_xm_file_list="${host_xm_file_list} $f"
1793 host_xm_include_list="${host_xm_include_list} $f"
1796 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1797 host_xm_include_list="${host_xm_include_list} config/$f"
1803 for f in $build_xm_file; do
1806 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1807 build_xm_include_list="${build_xm_include_list} $f"
1809 auto-build.h | auto-host.h )
1810 build_xm_file_list="${build_xm_file_list} $f"
1811 build_xm_include_list="${build_xm_include_list} $f"
1814 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1815 build_xm_include_list="${build_xm_include_list} config/$f"
1820 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1821 # cross-compiler which does not use the native headers and libraries.
1822 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1823 CROSS= AC_SUBST(CROSS)
1824 ALL=all.internal AC_SUBST(ALL)
1825 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1827 if test "x$with_build_sysroot" != x; then
1828 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1830 # This value is used, even on a native system, because
1831 # CROSS_SYSTEM_HEADER_DIR is just
1832 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1833 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1836 if test x$host != x$target
1838 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1840 SYSTEM_HEADER_DIR=$build_system_header_dir
1841 case "$host","$target" in
1842 # Darwin crosses can use the host system's libraries and headers,
1843 # because of the fat library support. Of course, it must be the
1844 # same version of Darwin on both sides. Allow the user to
1845 # just say --target=foo-darwin without a version number to mean
1846 # "the version on this system".
1847 *-*-darwin*,*-*-darwin*)
1848 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1849 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1850 if test $hostos = $targetos -o $targetos = darwin ; then
1852 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1857 i?86-*-*,x86_64-*-* \
1858 | powerpc*-*-*,powerpc64*-*-*)
1859 CROSS="$CROSS -DNATIVE_CROSS" ;;
1864 if test "x$with_headers" = x; then
1871 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1872 SYSTEM_HEADER_DIR=$build_system_header_dir
1875 # If this is a cross-compiler that does not
1876 # have its own set of headers then define
1879 # If this is using newlib, without having the headers available now,
1880 # then define inhibit_libc in LIBGCC2_CFLAGS.
1881 # This prevents libgcc2 from containing any code which requires libc
1883 : ${inhibit_libc=false}
1884 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1885 test x$with_newlib = xyes ; } &&
1886 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1889 AC_SUBST(inhibit_libc)
1891 # When building gcc with a cross-compiler, we need to adjust things so
1892 # that the generator programs are still built with the native compiler.
1893 # Also, we cannot run fixincludes.
1895 # These are the normal (build=host) settings:
1896 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1897 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1898 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1899 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1900 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1901 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1903 # And these apply if build != host, or we are generating coverage data
1904 if test x$build != x$host || test "x$coverage_flags" != x
1906 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1907 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1910 # Expand extra_headers to include complete path.
1911 # This substitutes for lots of t-* files.
1913 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1914 for file in ${extra_headers} ; do
1915 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1918 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1919 if test x"$use_gcc_tgmath" = xyes
1920 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1923 # Define collect2 in Makefile.
1924 case $host_can_use_collect2 in
1926 *) collect2='collect2$(exeext)' ;;
1928 AC_SUBST([collect2])
1930 # Add a definition of USE_COLLECT2 if system wants one.
1931 case $use_collect2 in
1932 no) use_collect2= ;;
1935 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1936 xm_defines="${xm_defines} USE_COLLECT2"
1937 case $host_can_use_collect2 in
1939 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1945 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1946 [Define to the name of the LTO plugin DSO that must be
1947 passed to the linker's -plugin=LIB option.])
1949 # ---------------------------
1950 # Assembler & linker features
1951 # ---------------------------
1953 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1954 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1955 # However when ld-new is first executed from the build tree, libtool will
1956 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1957 # to the build tree. While doing this we need to use the previous-stage
1958 # linker, or we have an infinite loop. The presence of a shell script as
1959 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1960 # the gcc/collect-ld script. So we need to know how libtool works, or
1961 # exec-tool will fail.
1963 m4_defun([_LT_CONFIG_COMMANDS], [])
1966 AC_SUBST(enable_fast_install)
1968 # Identify the assembler which will work hand-in-glove with the newly
1969 # built GCC, so that we can examine its features. This is the assembler
1970 # which will be driven by the driver program.
1972 # If build != host, and we aren't building gas in-tree, we identify a
1973 # build->target assembler and hope that it will have the same features
1974 # as the host->target assembler we'll be using.
1975 gcc_cv_gas_major_version=
1976 gcc_cv_gas_minor_version=
1977 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1979 m4_pattern_allow([AS_FOR_TARGET])dnl
1980 AS_VAR_SET_IF(gcc_cv_as,, [
1981 if test -x "$DEFAULT_ASSEMBLER"; then
1982 gcc_cv_as="$DEFAULT_ASSEMBLER"
1983 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1984 && test -f ../gas/Makefile \
1985 && test x$build = x$host; then
1986 gcc_cv_as=../gas/as-new$build_exeext
1987 elif test -x as$build_exeext; then
1988 # Build using assembler in the current directory.
1989 gcc_cv_as=./as$build_exeext
1990 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1991 gcc_cv_as="$AS_FOR_TARGET"
1993 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1996 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1997 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1998 case "$ORIGINAL_AS_FOR_TARGET" in
1999 ./as | ./as$build_exeext) ;;
2000 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2003 AC_MSG_CHECKING(what assembler to use)
2004 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2005 # Single tree build which includes gas. We want to prefer it
2006 # over whatever linker top-level may have detected, since
2007 # we'll use what we're building after installation anyway.
2008 AC_MSG_RESULT(newly built gas)
2010 _gcc_COMPUTE_GAS_VERSION
2011 in_tree_gas_is_elf=no
2012 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2013 || (grep 'obj_format = multi' ../gas/Makefile \
2014 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2016 in_tree_gas_is_elf=yes
2019 AC_MSG_RESULT($gcc_cv_as)
2023 # Identify the linker which will work hand-in-glove with the newly
2024 # built GCC, so that we can examine its features. This is the linker
2025 # which will be driven by the driver program.
2027 # If build != host, and we aren't building gas in-tree, we identify a
2028 # build->target linker and hope that it will have the same features
2029 # as the host->target linker we'll be using.
2030 gcc_cv_gld_major_version=
2031 gcc_cv_gld_minor_version=
2032 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2033 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2035 AS_VAR_SET_IF(gcc_cv_ld,, [
2036 if test -x "$DEFAULT_LINKER"; then
2037 gcc_cv_ld="$DEFAULT_LINKER"
2038 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2039 && test -f ../ld/Makefile \
2040 && test x$build = x$host; then
2041 gcc_cv_ld=../ld/ld-new$build_exeext
2042 elif test -x collect-ld$build_exeext; then
2043 # Build using linker in the current directory.
2044 gcc_cv_ld=./collect-ld$build_exeext
2045 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2046 gcc_cv_ld="$LD_FOR_TARGET"
2048 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2051 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2052 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2053 # if the PLUGIN_LD is set ld-new, just have it as ld
2054 # as that is the installed named.
2055 if test x$PLUGIN_LD_SUFFIX = xld-new \
2056 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2059 AC_ARG_WITH(plugin-ld,
2060 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2061 [if test x"$withval" != x; then
2062 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2063 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2065 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2066 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2068 # Check to see if we are using gold instead of ld
2069 AC_MSG_CHECKING(whether we are using gold)
2071 if test x$gcc_cv_ld != x; then
2072 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2073 | grep "GNU gold" > /dev/null; then
2077 AC_MSG_RESULT($ld_is_gold)
2079 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2080 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2081 case "$ORIGINAL_LD_FOR_TARGET" in
2082 ./collect-ld | ./collect-ld$build_exeext) ;;
2083 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2086 AC_MSG_CHECKING(what linker to use)
2087 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2088 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2089 # Single tree build which includes ld. We want to prefer it
2090 # over whatever linker top-level may have detected, since
2091 # we'll use what we're building after installation anyway.
2092 AC_MSG_RESULT(newly built ld)
2094 in_tree_ld_is_elf=no
2095 if (grep 'EMUL = .*elf' ../ld/Makefile \
2096 || grep 'EMUL = .*linux' ../ld/Makefile \
2097 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2098 in_tree_ld_is_elf=yes
2099 elif test "$ld_is_gold" = yes; then
2100 in_tree_ld_is_elf=yes
2102 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
2105 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2106 if test x$gcc_cv_gld_version != x; then
2110 case $gcc_cv_gld_version in
2113 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2116 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2117 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2120 AC_MSG_RESULT($gcc_cv_ld)
2124 # Figure out what nm we will be using.
2125 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2126 AS_VAR_SET_IF(gcc_cv_nm,, [
2127 if test -f $gcc_cv_binutils_srcdir/configure.in \
2128 && test -f ../binutils/Makefile \
2129 && test x$build = x$host; then
2130 gcc_cv_nm=../binutils/nm-new$build_exeext
2131 elif test -x nm$build_exeext; then
2132 gcc_cv_nm=./nm$build_exeext
2133 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2134 gcc_cv_nm="$NM_FOR_TARGET"
2136 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2139 AC_MSG_CHECKING(what nm to use)
2140 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2141 # Single tree build which includes binutils.
2142 AC_MSG_RESULT(newly built nm)
2145 AC_MSG_RESULT($gcc_cv_nm)
2149 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2150 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2151 case "$ORIGINAL_NM_FOR_TARGET" in
2152 ./nm | ./nm$build_exeext) ;;
2153 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2157 # Figure out what objdump we will be using.
2158 AS_VAR_SET_IF(gcc_cv_objdump,, [
2159 if test -f $gcc_cv_binutils_srcdir/configure.in \
2160 && test -f ../binutils/Makefile \
2161 && test x$build = x$host; then
2162 # Single tree build which includes binutils.
2163 gcc_cv_objdump=../binutils/objdump$build_exeext
2164 elif test -x objdump$build_exeext; then
2165 gcc_cv_objdump=./objdump$build_exeext
2166 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2167 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2169 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2172 AC_MSG_CHECKING(what objdump to use)
2173 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2174 # Single tree build which includes binutils.
2175 AC_MSG_RESULT(newly built objdump)
2176 elif test x$gcc_cv_objdump = x; then
2177 AC_MSG_RESULT(not found)
2179 AC_MSG_RESULT($gcc_cv_objdump)
2182 # Figure out what readelf we will be using.
2183 AS_VAR_SET_IF(gcc_cv_readelf,, [
2184 if test -f $gcc_cv_binutils_srcdir/configure.in \
2185 && test -f ../binutils/Makefile \
2186 && test x$build = x$host; then
2187 # Single tree build which includes binutils.
2188 gcc_cv_readelf=../binutils/readelf$build_exeext
2189 elif test -x readelf$build_exeext; then
2190 gcc_cv_readelf=./readelf$build_exeext
2192 AC_PATH_PROG(gcc_cv_readelf, readelf)
2195 AC_MSG_CHECKING(what readelf to use)
2196 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2197 # Single tree build which includes binutils.
2198 AC_MSG_RESULT(newly built readelf)
2199 elif test x$gcc_cv_readelf = x; then
2200 AC_MSG_RESULT(not found)
2202 AC_MSG_RESULT($gcc_cv_readelf)
2205 # Figure out what assembler alignment features are present.
2206 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2210 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2211 [Define if your assembler supports .balign and .p2align.])])
2213 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2216 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2217 [Define if your assembler supports specifying the maximum number
2218 of bytes to skip when using the GAS .p2align command.])])
2220 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2223 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2224 [Define if your assembler supports .literal16.])])
2226 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2228 [conftest_label1: .word 0
2230 conftest_label2: .word 0
2232 [if test x$gcc_cv_nm != x; then
2233 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2234 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2235 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2237 else gcc_cv_as_subsection_m1=yes
2239 rm -f conftest.nm1 conftest.nm2
2241 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2242 [Define if your assembler supports .subsection and .subsection -1 starts
2243 emitting at the beginning of your section.])])
2245 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2248 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2250 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2252 [ .weakref foobar, barfnot],,
2253 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2255 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2258 .NSUBSPA $CODE$,COMDAT],,
2259 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2261 # .hidden needs to be supported in both the assembler and the linker,
2262 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2263 # This is irritatingly difficult to feature test for; we have to check the
2264 # date string after the version number. If we've got an in-tree
2265 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2267 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2268 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2272 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2273 # STV_HIDDEN, so disable .hidden support if so.
2275 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2276 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2277 cat > conftest.s <<EOF
2284 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2285 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2286 grep '\.hidden default' > /dev/null; then
2289 gcc_cv_as_hidden=yes
2292 # Assume bug is present if objdump is missing.
2297 gcc_cv_as_hidden=yes
2302 # Darwin as has some visibility support, though with a different syntax.
2303 gcc_cv_as_hidden=yes
2307 # gnu_indirect_function type is an extension proposed at
2308 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2309 # selection of function implementation
2310 AC_ARG_ENABLE(gnu-indirect-function,
2311 [AS_HELP_STRING([--enable-gnu-indirect-function],
2312 [enable the use of the @gnu_indirect_function to glibc systems])],
2313 [case $enable_gnu_indirect_function in
2315 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2316 Valid choices are 'yes' and 'no'.]) ;;
2318 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2320 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2321 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
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$target && test x$host_cpu = xi686; 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([interunit movq mnemonic],
3758 gcc_cv_as_ix86_interunit_movq,,,
3762 [AC_DEFINE(HAVE_AS_IX86_INTERUNIT_MOVQ, 1,
3763 [Define if your assembler supports interunit movq mnemonic.])])
3765 gcc_GAS_CHECK_FEATURE([hle prefixes],
3766 gcc_cv_as_ix86_hle,,,
3767 [lock xacquire cmpxchg %esi, (%ecx)],,
3768 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3769 [Define if your assembler supports HLE prefixes.])])
3771 gcc_GAS_CHECK_FEATURE([swap suffix],
3772 gcc_cv_as_ix86_swap,,,
3773 [movl.s %esp, %ebp],,
3774 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3775 [Define if your assembler supports the swap suffix.])])
3777 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3778 gcc_cv_as_ix86_diff_sect_delta,,,
3786 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3787 [Define if your assembler supports the subtraction of symbols in different sections.])])
3789 # These two are used unconditionally by i386.[ch]; it is to be defined
3790 # to 1 if the feature is present, 0 otherwise.
3791 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3792 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3798 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3799 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3800 [Define true if the assembler supports '.long foo@GOTOFF'.])
3802 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3803 gcc_cv_as_ix86_rep_lock_prefix,,,
3809 lock addl %edi, (%eax,%esi)
3810 lock orl $0, (%esp)],,
3811 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3812 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3814 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3815 gcc_cv_as_ix86_tlsgdplt,,,
3816 [call tls_gd@tlsgdplt],
3817 [if test x$gcc_cv_ld != x \
3818 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3819 gcc_cv_as_ix86_tlsgdplt=yes
3822 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3823 [Define if your assembler and linker support @tlsgdplt.])])
3825 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3826 gcc_cv_as_ix86_tlsldmplt,,,
3828 call tls_ld@tlsldmplt],
3829 [if test x$gcc_cv_ld != x \
3830 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3831 gcc_cv_as_ix86_tlsldmplt=yes
3834 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3835 [Define if your assembler and linker support @tlsldmplt.])])
3840 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3841 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3843 addl r15 = @ltoffx(x#), gp
3845 ld8.mov r16 = [[r15]], x#],,
3846 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3847 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3853 *-*-aix*) conftest_s=' .machine "pwr5"
3857 gcc_GAS_CHECK_FEATURE([.machine directive support],
3858 gcc_cv_as_machine_directive,,,
3859 [ .machine ppc7400])
3860 if test x$gcc_cv_as_machine_directive != xyes; then
3861 echo "*** This target requires an assembler supporting \".machine\"" >&2
3862 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3863 test x$build = x$target && exit 1
3867 *) conftest_s=' .machine power4
3872 gcc_GAS_CHECK_FEATURE([mfcr field support],
3873 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3875 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3876 [Define if your assembler supports mfcr field.])])
3879 *-*-aix*) conftest_s=' .machine "pwr5"
3882 *) conftest_s=' .machine power5
3887 gcc_GAS_CHECK_FEATURE([popcntb support],
3888 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3890 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3891 [Define if your assembler supports popcntb field.])])
3894 *-*-aix*) conftest_s=' .machine "pwr5x"
3897 *) conftest_s=' .machine power5
3902 gcc_GAS_CHECK_FEATURE([fp round support],
3903 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3905 [AC_DEFINE(HAVE_AS_FPRND, 1,
3906 [Define if your assembler supports fprnd.])])
3909 *-*-aix*) conftest_s=' .machine "pwr6"
3912 *) conftest_s=' .machine power6
3917 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3918 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3920 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3921 [Define if your assembler supports mffgpr and mftgpr.])])
3924 *-*-aix*) conftest_s=' .csect .text[[PR]]
3926 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3930 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3931 *) conftest_s=' .text
3933 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3936 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3937 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3939 [AC_DEFINE(HAVE_AS_REL16, 1,
3940 [Define if your assembler supports R_PPC_REL16 relocs.])])
3943 *-*-aix*) conftest_s=' .machine "pwr6"
3946 *) conftest_s=' .machine power6
3951 gcc_GAS_CHECK_FEATURE([compare bytes support],
3952 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3954 [AC_DEFINE(HAVE_AS_CMPB, 1,
3955 [Define if your assembler supports cmpb.])])
3958 *-*-aix*) conftest_s=' .machine "pwr6"
3961 *) conftest_s=' .machine power6
3966 gcc_GAS_CHECK_FEATURE([decimal float support],
3967 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3969 [AC_DEFINE(HAVE_AS_DFP, 1,
3970 [Define if your assembler supports DFP instructions.])])
3973 *-*-aix*) conftest_s=' .machine "pwr7"
3976 *) conftest_s=' .machine power7
3981 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3982 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3984 [AC_DEFINE(HAVE_AS_VSX, 1,
3985 [Define if your assembler supports VSX instructions.])])
3988 *-*-aix*) conftest_s=' .machine "pwr7"
3991 *) conftest_s=' .machine power7
3996 gcc_GAS_CHECK_FEATURE([popcntd support],
3997 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3999 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4000 [Define if your assembler supports POPCNTD instructions.])])
4003 *-*-aix*) conftest_s=' .machine "pwr8"
4004 .csect .text[[PR]]';;
4005 *) conftest_s=' .machine power8
4009 gcc_GAS_CHECK_FEATURE([power8 support],
4010 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4012 [AC_DEFINE(HAVE_AS_POWER8, 1,
4013 [Define if your assembler supports POWER8 instructions.])])
4016 *-*-aix*) conftest_s=' .csect .text[[PR]]
4018 *) conftest_s=' .text
4022 gcc_GAS_CHECK_FEATURE([lwsync support],
4023 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4025 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4026 [Define if your assembler supports LWSYNC instructions.])])
4029 *-*-aix*) conftest_s=' .machine "476"
4032 *) conftest_s=' .machine "476"
4037 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4038 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4040 [AC_DEFINE(HAVE_AS_DCI, 1,
4041 [Define if your assembler supports the DCI/ICI instructions.])])
4043 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4044 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4045 [.gnu_attribute 4,1],,
4046 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4047 [Define if your assembler supports .gnu_attribute.])])
4049 gcc_GAS_CHECK_FEATURE([tls marker support],
4050 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4051 [ bl __tls_get_addr(x@tlsgd)],,
4052 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4053 [Define if your assembler supports arg info for __tls_get_addr.])])
4057 gcc_GAS_CHECK_FEATURE([.ref support],
4058 gcc_cv_as_aix_ref, [2,21,0],,
4059 [ .csect stuff[[rw]]
4065 [AC_DEFINE(HAVE_AS_REF, 1,
4066 [Define if your assembler supports .ref])])
4072 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4073 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4074 [ lw $4,%gp_rel(foo)($4)],,
4075 [if test x$target_cpu_default = x
4076 then target_cpu_default=MASK_EXPLICIT_RELOCS
4077 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4079 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4080 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4081 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4082 [Define if the assembler understands -mno-shared.])])
4084 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4085 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4086 [.gnu_attribute 4,1],,
4087 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4088 [Define if your assembler supports .gnu_attribute.])])
4090 gcc_GAS_CHECK_FEATURE([.micromips support],
4091 gcc_cv_as_micromips_support,,[--fatal-warnings],
4093 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4094 [Define if your assembler supports the .set micromips directive])])
4096 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4097 gcc_cv_as_mips_dtprelword, [2,18,0],,
4098 [.section .tdata,"awT",@progbits
4102 .dtprelword x+0x8000],,
4103 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4104 [Define if your assembler supports .dtprelword.])])
4106 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4107 gcc_cv_as_mips_dspr1_mult,,,
4117 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4118 [Define if your assembler supports DSPR1 mult.])])
4120 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4121 gcc_cv_as_ld_jalr_reloc=no
4122 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4123 if test $in_tree_ld = yes ; then
4124 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4125 && test $in_tree_ld_is_elf = yes; then
4126 gcc_cv_as_ld_jalr_reloc=yes
4128 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4129 echo ' .ent x' > conftest.s
4130 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4131 echo ' ld $25,%call16(y)($28)' >> conftest.s
4132 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4133 echo '1: jalr $25' >> conftest.s
4134 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4135 echo '1: jalr $25' >> conftest.s
4136 echo ' .end x' >> conftest.s
4137 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4138 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4139 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4140 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4141 gcc_cv_as_ld_jalr_reloc=yes
4147 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4148 if test x$target_cpu_default = x; then
4149 target_cpu_default=MASK_RELAX_PIC_CALLS
4151 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4154 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4156 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4157 [gcc_cv_ld_mips_personality_relaxation],
4158 [gcc_cv_ld_mips_personality_relaxation=no
4159 if test $in_tree_ld = yes ; then
4160 if test "$gcc_cv_gld_major_version" -eq 2 \
4161 -a "$gcc_cv_gld_minor_version" -ge 21 \
4162 -o "$gcc_cv_gld_major_version" -gt 2; then
4163 gcc_cv_ld_mips_personality_relaxation=yes
4165 elif test x$gcc_cv_as != x \
4166 -a x$gcc_cv_ld != x \
4167 -a x$gcc_cv_readelf != x ; then
4168 cat > conftest.s <<EOF
4170 .cfi_personality 0x80,indirect_ptr
4177 .section .data,"aw",@progbits
4181 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4182 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4183 if $gcc_cv_readelf -d conftest 2>&1 \
4184 | grep TEXTREL > /dev/null 2>&1; then
4186 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4187 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4190 gcc_cv_ld_mips_personality_relaxation=yes
4194 rm -f conftest.s conftest.o conftest])
4195 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4196 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4197 [Define if your linker can relax absolute .eh_frame personality
4198 pointers into PC-relative form.])
4201 gcc_GAS_CHECK_FEATURE([-mnan= support],
4202 gcc_cv_as_mips_nan,,
4204 [AC_DEFINE(HAVE_AS_NAN, 1,
4205 [Define if the assembler understands -mnan=.])])
4206 if test x$gcc_cv_as_mips_nan = xno \
4207 && test x$with_nan != x; then
4209 [Requesting --with-nan= requires assembler support for -mnan=])
4214 # Mips and HP-UX need the GNU assembler.
4215 # Linux on IA64 might be able to use the Intel assembler.
4218 mips*-*-* | *-*-hpux* )
4219 if test x$gas_flag = xyes \
4220 || test x"$host" != x"$build" \
4221 || test ! -x "$gcc_cv_as" \
4222 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4225 echo "*** This configuration requires the GNU assembler" >&2
4231 # ??? Not all targets support dwarf2 debug_line, even within a version
4232 # of gas. Moreover, we need to emit a valid instruction to trigger any
4233 # info to the output file. So, as supported targets are added to gas 2.11,
4234 # add some instruction here to (also) show we expect this might work.
4235 # ??? Once 2.11 is released, probably need to add first known working
4236 # version to the per-target configury.
4238 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4239 | mips | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 \
4250 if test x"$insn" != x; then
4252 .file 1 \"conftest.s\"
4255 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4256 gcc_cv_as_dwarf2_debug_line,
4257 [elf,2,11,0],, [$conftest_s],
4258 [if test x$gcc_cv_objdump != x \
4259 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4260 | grep debug_line > /dev/null 2>&1; then
4261 gcc_cv_as_dwarf2_debug_line=yes
4264 # The .debug_line file table must be in the exact order that
4265 # we specified the files, since these indices are also used
4266 # by DW_AT_decl_file. Approximate this test by testing if
4267 # the assembler bitches if the same index is assigned twice.
4268 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4269 gcc_cv_as_dwarf2_file_buggy,,,
4273 if test $gcc_cv_as_dwarf2_debug_line = yes \
4274 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4275 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4276 [Define if your assembler supports dwarf2 .file/.loc directives,
4277 and preserves file table indices exactly as given.])
4280 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4281 gcc_cv_as_gdwarf2_flag,
4282 [elf,2,11,0], [--gdwarf2], [$insn],,
4283 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4284 [Define if your assembler supports the --gdwarf2 option.])])
4286 gcc_GAS_CHECK_FEATURE([--gstabs option],
4287 gcc_cv_as_gstabs_flag,
4288 [elf,2,11,0], [--gstabs], [$insn],
4289 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4290 # and warns about it, but still exits successfully. So check for
4292 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4294 else gcc_cv_as_gstabs_flag=yes
4296 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4297 [Define if your assembler supports the --gstabs option.])])
4299 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4300 gcc_cv_as_debug_prefix_map_flag,
4301 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4302 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4303 [Define if your assembler supports the --debug-prefix-map option.])])
4306 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4309 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4310 [Define if your assembler supports .lcomm with an alignment field.])])
4312 AC_ARG_ENABLE(gnu-unique-object,
4313 [AS_HELP_STRING([--enable-gnu-unique-object],
4314 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4315 [case $enable_gnu_unique_object in
4317 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4318 Valid choices are 'yes' and 'no'.]) ;;
4320 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4322 [.type foo, '$target_type_format_char'gnu_unique_object],,
4323 # We need to unquote above to to use the definition from config.gcc.
4324 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4325 [[if test x$host = x$build -a x$host = x$target &&
4326 ldd --version 2>/dev/null &&
4327 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4328 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4329 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4330 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4331 if test "$glibcnum" -ge 2011 ; then
4332 enable_gnu_unique_object=yes
4335 if test x$enable_gnu_unique_object = xyes; then
4336 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4337 [Define if your assembler supports @gnu_unique_object.])
4340 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4341 [gcc_cv_as_line_zero],
4342 [gcc_cv_as_line_zero=no
4343 if test $in_tree_gas = yes; then
4344 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4345 elif test "x$gcc_cv_as" != x; then
4346 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4347 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4348 test "x`cat conftest.out`" = x
4350 gcc_cv_as_line_zero=yes
4352 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4353 cat conftest.s >&AS_MESSAGE_LOG_FD
4354 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4355 cat conftest.out >&AS_MESSAGE_LOG_FD
4357 rm -f conftest.o conftest.s conftest.out
4359 if test "x$gcc_cv_as_line_zero" = xyes; then
4360 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4361 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4364 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4365 gcc_cv_ld_eh_frame_hdr=no
4366 if test $in_tree_ld = yes ; then
4367 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4368 && test $in_tree_ld_is_elf = yes; then
4369 gcc_cv_ld_eh_frame_hdr=yes
4371 elif test x$gcc_cv_ld != x; then
4372 if echo "$ld_ver" | grep GNU > /dev/null; then
4373 # Check if linker supports --eh-frame-hdr option
4374 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4375 gcc_cv_ld_eh_frame_hdr=yes
4380 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4381 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4382 gcc_cv_ld_eh_frame_hdr=yes
4388 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4389 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4390 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4391 [Define if your linker supports .eh_frame_hdr.])
4393 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4395 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4396 gcc_cv_ld_eh_frame_ciev3=no
4397 if test $in_tree_ld = yes ; then
4398 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4399 && test $in_tree_ld_is_elf = yes; then
4400 gcc_cv_ld_eh_frame_ciev3=yes
4402 elif test x$gcc_cv_ld != x; then
4403 if echo "$ld_ver" | grep GNU > /dev/null; then
4404 gcc_cv_ld_eh_frame_ciev3=yes
4405 if test 0"$ld_date" -lt 20040513; then
4406 if test -n "$ld_date"; then
4407 # If there was date string, but was earlier than 2004-05-13, fail
4408 gcc_cv_ld_eh_frame_ciev3=no
4409 elif test "$ld_vers_major" -lt 2; then
4410 gcc_cv_ld_eh_frame_ciev3=no
4411 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4412 gcc_cv_ld_eh_frame_ciev3=no
4418 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4419 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4420 gcc_cv_ld_eh_frame_ciev3=yes
4426 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4427 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4428 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4429 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4431 AC_MSG_CHECKING(linker position independent executable support)
4433 if test $in_tree_ld = yes ; then
4434 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4435 && test $in_tree_ld_is_elf = yes; then
4438 elif test x$gcc_cv_ld != x; then
4439 # Check if linker supports -pie option
4440 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4444 if test x"$gcc_cv_ld_pie" = xyes; then
4445 AC_DEFINE(HAVE_LD_PIE, 1,
4446 [Define if your linker supports -pie option.])
4448 AC_MSG_RESULT($gcc_cv_ld_pie)
4450 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4451 gcc_cv_ld_eh_gc_sections=no
4452 if test $in_tree_ld = yes ; then
4453 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4454 && test $in_tree_ld_is_elf = yes; then
4455 gcc_cv_ld_eh_gc_sections=yes
4457 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4458 cat > conftest.s <<EOF
4461 .type _start, @function
4464 .size _start, .-_start
4465 .section .text.foo,"ax",@progbits
4466 .type foo, @function
4470 .section .gcc_except_table.foo,"a",@progbits
4473 .section .eh_frame,"a",@progbits
4476 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4477 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4478 | grep "gc-sections option ignored" > /dev/null; then
4479 gcc_cv_ld_eh_gc_sections=no
4480 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4481 | grep gcc_except_table > /dev/null; then
4482 gcc_cv_ld_eh_gc_sections=yes
4483 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4484 if test x$gcc_cv_as_comdat_group != xyes; then
4485 gcc_cv_ld_eh_gc_sections=no
4486 cat > conftest.s <<EOF
4489 .type _start, @function
4492 .size _start, .-_start
4493 .section .gnu.linkonce.t.foo,"ax",@progbits
4494 .type foo, @function
4498 .section .gcc_except_table.foo,"a",@progbits
4501 .section .eh_frame,"a",@progbits
4504 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4505 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4506 | grep "gc-sections option ignored" > /dev/null; then
4507 gcc_cv_ld_eh_gc_sections=no
4508 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4509 | grep gcc_except_table > /dev/null; then
4510 gcc_cv_ld_eh_gc_sections=yes
4516 rm -f conftest.s conftest.o conftest
4520 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4521 gcc_cv_ld_eh_gc_sections=no
4524 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4525 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4526 [Define if your linker supports garbage collection of
4527 sections in presence of EH frames.])
4529 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4531 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4532 gcc_cv_ld_eh_gc_sections_bug=no
4533 if test $in_tree_ld = yes ; then
4534 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4535 && test $in_tree_ld_is_elf = yes; then
4536 gcc_cv_ld_eh_gc_sections_bug=yes
4538 elif test x$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
4539 gcc_cv_ld_eh_gc_sections_bug=yes
4540 cat > conftest.s <<EOF
4543 .type _start, @function
4546 .size _start, .-_start
4547 .section .text.startup.foo,"ax",@progbits
4548 .type foo, @function
4552 .section .gcc_except_table.foo,"a",@progbits
4555 .section .eh_frame,"a",@progbits
4558 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4559 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4560 | grep "gc-sections option ignored" > /dev/null; then
4562 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4563 | grep gcc_except_table > /dev/null; then
4564 gcc_cv_ld_eh_gc_sections_bug=no
4567 rm -f conftest.s conftest.o conftest
4569 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4570 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4571 [Define if your linker has buggy garbage collection of
4572 sections support when .text.startup.foo like sections are used.])
4574 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4580 AC_CACHE_CHECK(linker --as-needed support,
4581 gcc_cv_ld_as_needed,
4582 [gcc_cv_ld_as_needed=no
4583 gcc_cv_ld_as_needed_option='--as-needed'
4584 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4585 if test $in_tree_ld = yes ; then
4586 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4587 && test $in_tree_ld_is_elf = yes; then
4588 gcc_cv_ld_as_needed=yes
4590 elif test x$gcc_cv_ld != x; then
4591 # Check if linker supports --as-needed and --no-as-needed options
4592 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4593 gcc_cv_ld_as_needed=yes
4596 # Solaris 2 ld always supports -z ignore/-z record.
4598 gcc_cv_ld_as_needed=yes
4599 gcc_cv_ld_as_needed_option="-z ignore"
4600 gcc_cv_ld_no_as_needed_option="-z record"
4605 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4606 # dl_iterate_phdr, i.e. since Solaris 11.
4608 *-*-solaris2.1[[1-9]]*)
4610 i?86-*-* | x86_64-*-*)
4611 if echo "$ld_ver" | grep GNU > /dev/null; then
4612 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4613 gcc_cv_ld_as_needed=no
4619 gcc_cv_ld_as_needed=no
4623 if test x"$gcc_cv_ld_as_needed" = xyes; then
4624 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4625 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4626 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4627 [Define to the linker option to ignore unused dependencies.])
4628 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4629 [Define to the linker option to keep unused dependencies.])
4632 case "$target:$tm_file" in
4633 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4636 emul_name="-melf64lppc"
4639 emul_name="-melf64ppc"
4642 emul_name="-melf64ppc_fbsd"
4645 AC_CACHE_CHECK(linker support for omitting dot symbols,
4646 gcc_cv_ld_no_dot_syms,
4647 [gcc_cv_ld_no_dot_syms=no
4648 if test x"$ld_is_gold" = xyes; then
4649 gcc_cv_ld_no_dot_syms=yes
4650 elif test $in_tree_ld = yes ; then
4651 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4652 gcc_cv_ld_no_dot_syms=yes
4654 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4655 cat > conftest1.s <<EOF
4659 cat > conftest2.s <<EOF
4660 .section ".opd","aw"
4665 .quad .LEfoo,.TOC.@tocbase,0
4671 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4672 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4673 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4674 gcc_cv_ld_no_dot_syms=yes
4676 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4679 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4680 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4681 [Define if your PowerPC64 linker only needs function descriptor syms.])
4684 AC_CACHE_CHECK(linker large toc support,
4685 gcc_cv_ld_large_toc,
4686 [gcc_cv_ld_large_toc=no
4687 if test x"$ld_is_gold" = xyes; then
4688 gcc_cv_ld_large_toc=yes
4689 elif test $in_tree_ld = yes ; then
4690 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4691 gcc_cv_ld_large_toc=yes
4693 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4694 cat > conftest.s <<EOF
4695 .section ".tbss","awT",@nobits
4701 addis 9,13,ie0@got@tprel@ha
4702 ld 9,ie0@got@tprel@l(9)
4704 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4705 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4706 gcc_cv_ld_large_toc=yes
4708 rm -f conftest conftest.o conftest.s
4711 if test x"$gcc_cv_ld_large_toc" = xyes; then
4712 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4713 [Define if your PowerPC64 linker supports a large TOC.])
4720 AC_CACHE_CHECK(linker large toc support,
4721 gcc_cv_ld_large_toc,
4722 [gcc_cv_ld_large_toc=no
4723 if test x$gcc_cv_as != x ; then
4724 cat > conftest.s <<EOF
4734 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4735 gcc_cv_ld_large_toc=yes
4737 rm -f conftest conftest.o conftest.s
4740 if test x"$gcc_cv_ld_large_toc" = xyes; then
4741 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4742 [Define if your PowerPC64 linker supports a large TOC.])
4747 AC_CACHE_CHECK(linker --build-id support,
4749 [gcc_cv_ld_buildid=no
4750 if test $in_tree_ld = yes ; then
4751 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4752 "$gcc_cv_gld_minor_version" -ge 18 -o \
4753 "$gcc_cv_gld_major_version" -gt 2 \
4754 && test $in_tree_ld_is_elf = yes; then
4755 gcc_cv_ld_buildid=yes
4757 elif test x$gcc_cv_ld != x; then
4758 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4759 gcc_cv_ld_buildid=yes
4762 if test x"$gcc_cv_ld_buildid" = xyes; then
4763 AC_DEFINE(HAVE_LD_BUILDID, 1,
4764 [Define if your linker supports --build-id.])
4767 AC_ARG_ENABLE(linker-build-id,
4768 [AS_HELP_STRING([--enable-linker-build-id],
4769 [compiler will always pass --build-id to linker])],
4771 enable_linker_build_id=no)
4773 if test x"$enable_linker_build_id" = xyes; then
4774 if test x"$gcc_cv_ld_buildid" = xyes; then
4775 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4776 [Define if gcc should always pass --build-id to linker.])
4778 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4782 # In binutils 2.21, GNU ld gained support for new emulations fully
4783 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4784 AC_CACHE_CHECK(linker *_sol2 emulation support,
4785 gcc_cv_ld_sol2_emulation,
4786 [gcc_cv_ld_sol2_emulation=no
4787 if test $in_tree_ld = yes ; then
4788 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4789 "$gcc_cv_gld_minor_version" -ge 21 -o \
4790 "$gcc_cv_gld_major_version" -gt 2 \
4791 && test $in_tree_ld_is_elf = yes; then
4792 gcc_cv_ld_sol2_emulation=yes
4794 elif test x$gcc_cv_ld != x; then
4795 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4796 grep _sol2 > /dev/null; then
4797 gcc_cv_ld_sol2_emulation=yes
4800 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4801 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4802 [Define if your linker supports the *_sol2 emulations.])
4805 AC_CACHE_CHECK(linker --sysroot support,
4807 [gcc_cv_ld_sysroot=no
4808 if test $in_tree_ld = yes ; then
4809 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4810 gcc_cv_ld_sysroot=yes
4812 elif test x$gcc_cv_ld != x; then
4813 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4814 gcc_cv_ld_sysroot=yes
4817 if test x"$gcc_cv_ld_sysroot" = xyes; then
4818 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4819 [Define if your linker supports --sysroot.])
4822 if test x$with_sysroot = x && test x$host = x$target \
4823 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4824 && test "$prefix" != "NONE"; then
4825 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4826 [Define to PREFIX/include if cpp should also search that directory.])
4829 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4830 if test "x$with_headers" != x; then
4831 target_header_dir=$with_headers
4832 elif test "x$with_sysroot" = x; then
4833 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4834 elif test "x$with_build_sysroot" != "x"; then
4835 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4836 elif test "x$with_sysroot" = xyes; then
4837 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4839 target_header_dir="${with_sysroot}${native_system_header_dir}"
4842 target_header_dir=${native_system_header_dir}
4845 # Test for stack protector support in target C library.
4846 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4847 gcc_cv_libc_provides_ssp,
4848 [gcc_cv_libc_provides_ssp=no
4850 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4851 [# glibc 2.4 and later provides __stack_chk_fail and
4852 # either __stack_chk_guard, or TLS access to stack guard canary.
4853 if test -f $target_header_dir/features.h \
4854 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4855 $target_header_dir/features.h > /dev/null; then
4856 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4857 $target_header_dir/features.h > /dev/null; then
4858 gcc_cv_libc_provides_ssp=yes
4859 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4860 $target_header_dir/features.h > /dev/null \
4861 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4862 $target_header_dir/features.h > /dev/null; then
4863 gcc_cv_libc_provides_ssp=yes
4864 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4865 $target_header_dir/features.h > /dev/null && \
4866 test -f $target_header_dir/bits/uClibc_config.h && \
4867 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4868 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4869 gcc_cv_libc_provides_ssp=yes
4871 # all versions of Bionic support stack protector
4872 elif test -f $target_header_dir/sys/cdefs.h \
4873 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4874 $target_header_dir/sys/cdefs.h > /dev/null; then
4875 gcc_cv_libc_provides_ssp=yes
4879 # Avoid complicated tests (see
4880 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4881 # simply assert that glibc does provide this, which is true for all
4882 # realistically usable GNU/Hurd configurations.
4883 gcc_cv_libc_provides_ssp=yes;;
4884 *-*-darwin* | *-*-freebsd*)
4885 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4886 [echo "no __stack_chk_fail on this target"])
4888 *) gcc_cv_libc_provides_ssp=no ;;
4891 if test x$gcc_cv_libc_provides_ssp = xyes; then
4892 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4893 [Define if your target C library provides stack protector support])
4896 # Test for <sys/sdt.h> on the target.
4897 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4898 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4900 if test -f $target_header_dir/sys/sdt.h; then
4902 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4903 [Define if your target C library provides sys/sdt.h])
4905 AC_MSG_RESULT($have_sys_sdt_h)
4907 # Check if TFmode long double should be used by default or not.
4908 # Some glibc targets used DFmode long double, but with glibc 2.4
4909 # and later they can use TFmode.
4911 powerpc*-*-linux* | \
4915 AC_ARG_WITH(long-double-128,
4916 [AS_HELP_STRING([--with-long-double-128],
4917 [use 128-bit long double by default])],
4918 gcc_cv_target_ldbl128="$with_long_double_128",
4919 [[gcc_cv_target_ldbl128=no
4920 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4921 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4922 && gcc_cv_target_ldbl128=yes
4926 if test x$gcc_cv_target_ldbl128 = xyes; then
4927 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4928 [Define if TFmode long double should be the default])
4931 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4932 gcc_cv_target_dl_iterate_phdr=unknown
4934 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4935 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4936 # libdl there, both complicating its use and breaking compatibility
4937 # between Solaris 10 updates.
4938 *-*-solaris2.1[[1-9]]*)
4939 # <link.h> needs both a dl_iterate_phdr declaration and support for
4940 # compilation with largefile support.
4941 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4942 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4943 gcc_cv_target_dl_iterate_phdr=yes
4945 gcc_cv_target_dl_iterate_phdr=no
4949 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4950 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4951 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4952 [Define if your target C library provides the `dl_iterate_phdr' function.])
4954 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4956 # We no longer support different GC mechanisms. Emit an error if
4957 # the user configures with --with-gc.
4959 [AS_HELP_STRING([--with-gc={page,zone}],
4960 [this option is not supported anymore. It used to choose
4961 the garbage collection mechanism to use with the compiler])],
4962 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4965 # Libraries to use on the host. This will normally be set by the top
4966 # level Makefile. Here we simply capture the value for our Makefile.
4967 if test -z "${HOST_LIBS+set}"; then
4972 # Use the system's zlib library.
4974 zlibinc="-I\$(srcdir)/../zlib"
4975 AC_ARG_WITH(system-zlib,
4976 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4983 dnl Very limited version of automake's enable-maintainer-mode
4985 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4986 dnl maintainer-mode is disabled by default
4987 AC_ARG_ENABLE(maintainer-mode,
4988 [AS_HELP_STRING([--enable-maintainer-mode],
4989 [enable make rules and dependencies not useful
4990 (and sometimes confusing) to the casual installer])],
4991 maintainer_mode=$enableval,
4994 AC_MSG_RESULT($maintainer_mode)
4996 if test "$maintainer_mode" = "yes"; then
5003 dnl Whether to prevent multiple front-ends from linking at the same time
5005 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5006 AC_ARG_ENABLE(link-mutex,
5007 [AS_HELP_STRING([--enable-link-mutex],
5008 [avoid linking multiple front-ends at once to avoid thrashing
5009 on the build machine])],
5010 do_link_mutex=$enableval,
5012 AC_MSG_RESULT($do_link_mutex)
5014 if test "$do_link_mutex" = "yes"; then
5019 AC_SUBST(DO_LINK_MUTEX)
5025 # Make empty files to contain the specs and options for each language.
5026 # Then add #include lines to for a compiler that has specs and/or options.
5032 # These (without "all_") are set in each config-lang.in.
5033 # `language' must be a single word so is spelled singularly.
5036 all_outputs='Makefile'
5037 # List of language makefile fragments.
5039 # Additional files for gengtype
5040 all_gtfiles="$target_gtfiles"
5042 # These are the languages that are set in --enable-languages,
5043 # and are available in the GCC tree.
5044 all_selected_languages=
5046 # Add the language fragments.
5047 # Languages are added via two mechanisms. Some information must be
5048 # recorded in makefile variables, these are defined in config-lang.in.
5049 # We accumulate them and plug them into the main Makefile.
5050 # The other mechanism is a set of hooks for each of the main targets
5051 # like `clean', `install', etc.
5053 language_hooks="Make-hooks"
5055 for lang in ${srcdir}/*/config-lang.in
5058 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5060 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5061 if test "x$lang_alias" = x
5063 echo "$lang doesn't set \$language." 1>&2
5066 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5067 subdirs="$subdirs $subdir"
5069 # $gcc_subdir is where the gcc integration files are to be found
5070 # for a language, both for internal compiler purposes (compiler
5071 # sources implementing front-end to GCC tree converters), and for
5072 # build infrastructure purposes (Make-lang.in, etc.)
5074 # This will be <subdir> (relative to $srcdir) if a line like
5075 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5076 # is found in <langdir>/config-lang.in, and will remain <langdir>
5079 # Except for the language alias (fetched above), the regular
5080 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5081 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5082 # only this and the language alias.
5084 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5085 if [ "$gcc_subdir" = "" ]; then
5086 gcc_subdir="$subdir"
5089 case ",$enable_languages," in
5091 all_selected_languages="$all_selected_languages $lang_alias"
5092 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5093 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5105 . ${srcdir}/$gcc_subdir/config-lang.in
5106 if test "x$language" = x
5108 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5113 case ",$enable_languages," in
5116 for i in $subdir_requires; do
5117 test -f "${srcdir}/$i/config-lang.in" && continue
5125 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5126 if test -f $srcdir/$gcc_subdir/lang.opt; then
5127 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5128 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5130 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5131 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5133 all_languages="$all_languages $language"
5134 all_compilers="$all_compilers $compilers"
5135 all_outputs="$all_outputs $outputs"
5136 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5137 case ",$enable_languages," in
5139 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5141 AC_SUBST(enable_lto)
5148 for language in $all_selected_languages
5150 check_languages="$check_languages check-$language"
5153 # We link each language in with a set of hooks, reached indirectly via
5154 # lang.${target}. Only do so for selected languages.
5158 target_list="all.cross start.encap rest.encap tags \
5159 install-common install-man install-info install-pdf install-html dvi \
5160 pdf html uninstall info man srcextra srcman srcinfo \
5161 mostlyclean clean distclean maintainer-clean install-plugin"
5163 for t in $target_list
5166 for lang in $all_selected_languages
5170 echo "lang.$t: $x" >> Make-hooks
5174 # Option include files
5177 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5178 option_includes="option-includes.mk"
5179 AC_SUBST_FILE(option_includes)
5187 echo "dir ." > .gdbinit
5188 echo "dir ${srcdir}" >> .gdbinit
5189 if test x$gdb_needs_out_file_path = xyes
5191 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5193 if test "x$subdirs" != x; then
5196 echo "dir ${srcdir}/$s" >> .gdbinit
5199 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5200 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5202 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5203 AC_SUBST(gcc_tooldir)
5206 # Find a directory in which to install a shared libgcc.
5208 AC_ARG_ENABLE(version-specific-runtime-libs,
5209 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5210 [specify that runtime libraries should be
5211 installed in a compiler-specific directory])])
5213 # Substitute configuration variables
5216 AC_SUBST(all_compilers)
5217 AC_SUBST(all_gtfiles)
5218 AC_SUBST(all_lang_makefrags)
5219 AC_SUBST(all_languages)
5220 AC_SUBST(all_selected_languages)
5221 AC_SUBST(build_exeext)
5222 AC_SUBST(build_install_headers_dir)
5223 AC_SUBST(build_xm_file_list)
5224 AC_SUBST(build_xm_include_list)
5225 AC_SUBST(build_xm_defines)
5226 AC_SUBST(build_file_translate)
5227 AC_SUBST(check_languages)
5228 AC_SUBST(cpp_install_dir)
5229 AC_SUBST(xmake_file)
5230 AC_SUBST(tmake_file)
5231 AC_SUBST(TM_ENDIAN_CONFIG)
5232 AC_SUBST(TM_MULTILIB_CONFIG)
5233 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5234 AC_SUBST(extra_gcc_objs)
5235 AC_SUBST(user_headers_inc_next_pre)
5236 AC_SUBST(user_headers_inc_next_post)
5237 AC_SUBST(extra_headers_list)
5238 AC_SUBST(extra_objs)
5239 AC_SUBST(extra_programs)
5240 AC_SUBST(float_h_file)
5241 AC_SUBST(gcc_config_arguments)
5242 AC_SUBST(gcc_gxx_include_dir)
5243 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5244 AC_SUBST(host_exeext)
5245 AC_SUBST(host_xm_file_list)
5246 AC_SUBST(host_xm_include_list)
5247 AC_SUBST(host_xm_defines)
5248 AC_SUBST(out_host_hook_obj)
5250 AC_SUBST(lang_opt_files)
5251 AC_SUBST(lang_specs_files)
5252 AC_SUBST(lang_tree_files)
5253 AC_SUBST(local_prefix)
5255 AC_SUBST(objc_boehm_gc)
5257 AC_SUBST(out_object_file)
5258 AC_SUBST(common_out_file)
5259 AC_SUBST(common_out_object_file)
5260 AC_SUBST(tm_file_list)
5261 AC_SUBST(tm_include_list)
5262 AC_SUBST(tm_defines)
5263 AC_SUBST(tm_p_file_list)
5264 AC_SUBST(tm_p_include_list)
5265 AC_SUBST(xm_file_list)
5266 AC_SUBST(xm_include_list)
5267 AC_SUBST(xm_defines)
5268 AC_SUBST(use_gcc_stdint)
5269 AC_SUBST(c_target_objs)
5270 AC_SUBST(cxx_target_objs)
5271 AC_SUBST(fortran_target_objs)
5272 AC_SUBST(target_cpu_default)
5274 AC_SUBST_FILE(language_hooks)
5277 if test x${build} = x${host} ; then
5278 if test x${host} = x${target} ; then
5279 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5281 echo "Links are now set up to build a cross-compiler" 1>&2
5282 echo " from ${host} to ${target}." 1>&2
5285 if test x${host} = x${target} ; then
5286 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5287 echo " for ${target}." 1>&2
5289 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5290 echo " from ${host} to ${target}." 1>&2
5294 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5295 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5297 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5298 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5300 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5301 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5302 if test "x${CLOOGLIBS}" != "x" ; then
5303 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5306 # Check for plugin support
5307 AC_ARG_ENABLE(plugin,
5308 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5309 enable_plugin=$enableval,
5310 enable_plugin=yes; default_plugin=yes)
5316 if test x$build = x$host; then
5317 export_sym_check="nm${exeext} -g"
5318 elif test x$host = x$target; then
5319 export_sym_check="$gcc_cv_nm -g"
5325 if test x$build = x$host; then
5326 export_sym_check="objdump${exeext} -T"
5327 elif test x$host = x$target; then
5328 export_sym_check="$gcc_cv_objdump -T"
5335 if test x"$enable_plugin" = x"yes"; then
5337 AC_MSG_CHECKING([for exported symbols])
5338 if test "x$export_sym_check" != x; then
5339 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5340 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5341 if $export_sym_check conftest | grep foobar > /dev/null; then
5342 : # No need to use a flag
5343 AC_MSG_RESULT([yes])
5345 AC_MSG_RESULT([yes])
5346 AC_MSG_CHECKING([for -rdynamic])
5347 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5348 if $export_sym_check conftest | grep foobar > /dev/null; then
5350 pluginlibs="-rdynamic"
5355 AC_MSG_RESULT([$plugin_rdynamic])
5358 AC_MSG_RESULT([unable to check])
5363 AC_SEARCH_LIBS([dlopen], [dl])
5364 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5365 pluginlibs="$pluginlibs -ldl"
5369 # Check that we can build shared objects with -fPIC -shared
5370 saved_LDFLAGS="$LDFLAGS"
5371 saved_CFLAGS="$CFLAGS"
5374 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5375 CFLAGS="$CFLAGS -fPIC"
5376 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5379 CFLAGS="$CFLAGS -fPIC"
5380 LDFLAGS="$LDFLAGS -fPIC -shared"
5383 AC_MSG_CHECKING([for -fPIC -shared])
5385 [extern int X;],[return X == 0;],
5386 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5387 [AC_MSG_RESULT([no]); have_pic_shared=no])
5388 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5392 LDFLAGS="$saved_LDFLAGS"
5393 CFLAGS="$saved_CFLAGS"
5395 # If plugin support had been requested but not available, fail.
5396 if test x"$enable_plugin" = x"no" ; then
5397 if test x"$default_plugin" != x"yes"; then
5399 Building GCC with plugin support requires a host that supports
5400 -fPIC, -shared, -ldl and -rdynamic.])
5405 AC_SUBST(pluginlibs)
5406 AC_SUBST(enable_plugin)
5407 if test x"$enable_plugin" = x"yes"; then
5408 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5412 AC_ARG_ENABLE(libquadmath-support,
5413 [AS_HELP_STRING([--disable-libquadmath-support],
5414 [disable libquadmath support for Fortran])],
5415 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5416 ENABLE_LIBQUADMATH_SUPPORT=yes)
5417 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5418 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5419 [Define to 1 to enable libquadmath support])
5423 # Specify what hash style to use by default.
5424 AC_ARG_WITH([linker-hash-style],
5425 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5426 [specify the linker hash style])],
5427 [case x"$withval" in
5429 LINKER_HASH_STYLE=sysv
5432 LINKER_HASH_STYLE=gnu
5435 LINKER_HASH_STYLE=both
5438 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5441 [LINKER_HASH_STYLE=''])
5442 if test x"${LINKER_HASH_STYLE}" != x; then
5443 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5444 [The linker hash style])
5447 # Configure the subdirectories
5448 # AC_CONFIG_SUBDIRS($subdirs)
5450 # Create the Makefile
5451 # and configure language subdirectories
5452 AC_CONFIG_FILES($all_outputs)
5454 AC_CONFIG_COMMANDS([default],
5456 case ${CONFIG_HEADERS} in
5457 *auto-host.h:config.in*)
5460 # Make sure all the subdirs exist.
5461 for d in $subdirs doc build common c-family
5463 test -d $d || mkdir $d
5466 [subdirs='$subdirs'])