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} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
943 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
944 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
945 sys/resource.h sys/param.h sys/times.h sys/stat.h \
946 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
948 # Check for thread headers.
949 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
950 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
952 # These tests can't be done till we know if we have limits.h.
956 # ----------------------
957 # Checks for C++ headers
958 # ----------------------
960 dnl Autoconf will give an error in the configure script if there is no
961 dnl C++ preprocessor. Hack to prevent that.
962 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
964 m4_popdef([AC_MSG_ERROR])[]dnl
968 AC_CHECK_HEADERS(unordered_map)
969 AC_CHECK_HEADERS(tr1/unordered_map)
970 AC_CHECK_HEADERS(ext/hash_map)
979 # These libraries may be used by collect2.
980 # We may need a special search path to get them linked.
981 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
983 for libs in '' -lld -lmld \
984 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
985 '-L/usr/lib/cmplrs/cc3.11 -lmld'
988 AC_TRY_LINK_FUNC(ldopen,
989 [gcc_cv_collect2_libs="$libs"; break])
992 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
993 case $gcc_cv_collect2_libs in
995 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
997 AC_SUBST(COLLECT2_LIBS)
999 # When building Ada code on Alpha, we need exc_resume which is usually in
1000 # -lexc. So test for it.
1003 AC_SEARCH_LIBS(exc_resume, exc)
1006 AC_SUBST(GNAT_LIBEXC)
1008 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1011 AC_SEARCH_LIBS(kstat_open, kstat)
1012 EXTRA_GCC_LIBS="$LIBS"
1014 AC_SUBST(EXTRA_GCC_LIBS)
1016 # Some systems put ldexp and frexp in libm instead of libc; assume
1017 # they're both in the same place. jcf-dump needs them.
1020 AC_SEARCH_LIBS(ldexp, m)
1025 # Use <inttypes.h> only if it exists,
1026 # doesn't clash with <sys/types.h>, and declares intmax_t.
1027 AC_MSG_CHECKING(for inttypes.h)
1028 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1029 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1030 [[#include <sys/types.h>
1031 #include <inttypes.h>]],
1032 [[intmax_t i = -1;]])],
1033 [gcc_cv_header_inttypes_h=yes],
1034 [gcc_cv_header_inttypes_h=no])])
1035 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1036 if test $gcc_cv_header_inttypes_h = yes; then
1037 AC_DEFINE(HAVE_INTTYPES_H, 1,
1038 [Define if you have a working <inttypes.h> header file.])
1041 dnl Disabled until we have a complete test for buggy enum bitfields.
1042 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1044 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1045 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1046 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1047 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1048 putchar_unlocked putc_unlocked)
1049 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1050 sysconf strsignal getrusage nl_langinfo \
1051 gettimeofday mbstowcs wcswidth mmap setlocale \
1052 gcc_UNLOCKED_FUNCS madvise)
1054 if test x$ac_cv_func_mbstowcs = xyes; then
1055 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1056 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1062 [gcc_cv_func_mbstowcs_works=yes],
1063 [gcc_cv_func_mbstowcs_works=no],
1064 [gcc_cv_func_mbstowcs_works=yes])])
1065 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1066 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1067 [Define this macro if mbstowcs does not crash when its
1068 first argument is NULL.])
1072 AC_CHECK_TYPE(ssize_t, int)
1073 AC_CHECK_TYPE(caddr_t, char *)
1075 GCC_AC_FUNC_MMAP_BLACKLIST
1079 # Under VMS, vfork works very differently than on Unix. The standard test
1080 # won't work, and it isn't easily adaptable. It makes more sense to
1082 ac_cv_func_vfork_works=yes
1087 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1088 # iconv() prototype.
1093 # Until we have in-tree GNU iconv:
1095 AC_SUBST(LIBICONV_DEP)
1101 # We will need to find libiberty.h and ansidecl.h
1102 saved_CFLAGS="$CFLAGS"
1103 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1104 saved_CXXFLAGS="$CXXFLAGS"
1105 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1106 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1107 strsignal strstr stpcpy strverscmp \
1108 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1109 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1110 #include "ansidecl.h"
1111 #include "system.h"])
1113 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1114 #include "ansidecl.h"
1116 #ifdef HAVE_SYS_RESOURCE_H
1117 #include <sys/resource.h>
1121 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1122 #include "ansidecl.h"
1124 #ifdef HAVE_SYS_RESOURCE_H
1125 #include <sys/resource.h>
1127 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1128 [Define to `long' if <sys/resource.h> doesn't define.])])
1130 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1131 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1132 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1133 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1134 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1135 #include "ansidecl.h"
1144 gcc_AC_CHECK_DECLS(times, , ,[
1145 #include "ansidecl.h"
1147 #ifdef HAVE_SYS_TIMES_H
1148 #include <sys/times.h>
1152 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1153 #include "ansidecl.h"
1158 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1161 gcc_AC_CHECK_DECLS(madvise, , ,[
1162 #include "ansidecl.h"
1167 # More time-related stuff.
1168 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1169 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1170 #include "ansidecl.h"
1172 #ifdef HAVE_SYS_TIMES_H
1173 #include <sys/times.h>
1175 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1176 if test $ac_cv_struct_tms = yes; then
1177 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1178 [Define if <sys/times.h> defines struct tms.])
1181 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1182 # revisit after autoconf 2.50.
1183 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1184 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1185 #include "ansidecl.h"
1187 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1188 if test $gcc_cv_type_clock_t = yes; then
1189 AC_DEFINE(HAVE_CLOCK_T, 1,
1190 [Define if <time.h> defines clock_t.])
1193 # Check if F_SETLKW is supported by fcntl.
1194 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1195 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1196 #include <fcntl.h>]], [[
1202 return fcntl (1, F_SETLKW, &fl);]])],
1203 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1204 if test $ac_cv_f_setlkw = yes; then
1205 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1206 [Define if F_SETLKW supported by fcntl.])
1209 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1210 CFLAGS="$saved_CFLAGS"
1211 CXXFLAGS="$saved_CXXFLAGS"
1213 # mkdir takes a single argument on some systems.
1214 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1222 # With Setjmp/Longjmp based exception handling.
1223 AC_ARG_ENABLE(sjlj-exceptions,
1224 [AS_HELP_STRING([--enable-sjlj-exceptions],
1225 [arrange to use setjmp/longjmp exception handling])],
1228 if test $enableval != yes; then
1229 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1234 force_sjlj_exceptions=yes],
1237 force_sjlj_exceptions=yes
1241 force_sjlj_exceptions=no
1244 if test $force_sjlj_exceptions = yes; then
1245 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1246 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1247 [Define 0/1 to force the choice for exception handling model.])
1250 # --------------------------------------------------------
1251 # Build, host, and target specific configuration fragments
1252 # --------------------------------------------------------
1254 # Collect build-machine-specific information.
1255 . ${srcdir}/config.build
1257 # Collect host-machine-specific information.
1258 . ${srcdir}/config.host
1262 # Collect target-machine-specific information.
1263 . ${srcdir}/config.gcc
1265 extra_objs="${host_extra_objs} ${extra_objs}"
1266 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1268 # Default the target-machine variables that were not explicitly set.
1269 if test x"$tm_file" = x
1270 then tm_file=$cpu_type/$cpu_type.h; fi
1272 if test x"$extra_headers" = x
1273 then extra_headers=; fi
1275 if test x$md_file = x
1276 then md_file=$cpu_type/$cpu_type.md; fi
1278 if test x$out_file = x
1279 then out_file=$cpu_type/$cpu_type.c; fi
1281 if test x"$tmake_file" = x
1282 then tmake_file=$cpu_type/t-$cpu_type
1285 # Support --enable-initfini-array.
1286 if test x$enable_initfini_array != xno; then
1287 tm_file="${tm_file} initfini-array.h"
1290 if test x"$dwarf2" = xyes
1291 then tm_file="$tm_file tm-dwarf2.h"
1294 # Say what files are being used for the output code and MD file.
1295 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1296 echo "Using \`$srcdir/config/$md_file' as machine description file."
1298 # If any of the xm_file variables contain nonexistent files, warn
1299 # about them and drop them.
1302 for x in $build_xm_file; do
1303 if test -f $srcdir/config/$x
1305 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1311 for x in $host_xm_file; do
1312 if test -f $srcdir/config/$x
1314 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1320 for x in $xm_file; do
1321 if test -f $srcdir/config/$x
1323 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1329 for f in $tm_file; do
1332 if test $count = ax; then
1333 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1335 echo "Using the following target machine macro files:"
1336 for f in $tm_file; do
1337 echo " $srcdir/config/$f"
1341 if test x$need_64bit_hwint = xyes; then
1342 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1343 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1346 if test x$use_long_long_for_widest_fast_int = xyes; then
1347 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1348 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1349 efficiently supported by the host hardware.])
1352 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1353 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1355 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1356 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1359 for f in $host_xm_file; do
1362 if test $count = a; then
1364 elif test $count = ax; then
1365 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1367 echo "Using the following host machine macro files:"
1368 for f in $host_xm_file; do
1369 echo " $srcdir/config/$f"
1372 echo "Using ${out_host_hook_obj} for host machine hooks."
1374 if test "$host_xm_file" != "$build_xm_file"; then
1376 for f in $build_xm_file; do
1379 if test $count = a; then
1381 elif test $count = ax; then
1382 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1384 echo "Using the following build machine macro files:"
1385 for f in $build_xm_file; do
1386 echo " $srcdir/config/$f"
1391 if test -n "$configured_native_system_header_dir"; then
1392 native_system_header_dir=$configured_native_system_header_dir
1394 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1395 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1399 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1400 gcc_cv_mcontext_underscores,
1402 #include <sys/cdefs.h>
1403 #include <sys/signal.h>
1404 #include <ucontext.h>
1405 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1407 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1408 if test $gcc_cv_mcontext_underscores = yes; then
1409 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1410 [mcontext_t fields start with __])
1419 # Check if a valid thread package
1420 case ${enable_threads} in
1423 target_thread_file='single'
1427 target_thread_file='single'
1429 aix | dce | lynx | mipssde | posix | rtems | \
1430 single | tpf | vxworks | win32)
1431 target_thread_file=${enable_threads}
1434 echo "${enable_threads} is an unknown thread package" 1>&2
1439 if test x${thread_file} = x; then
1440 # No thread file set by target-specific clauses in config.gcc,
1441 # so use file chosen by default logic above
1442 thread_file=${target_thread_file}
1450 if test x$enable___cxa_atexit = xyes || \
1451 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1452 if test x$host = x$target; then
1454 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1455 # keyed to flag_use_cxa_atexit
1463 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1464 [echo "__cxa_atexit can't be enabled on this target"])
1468 # We can't check for __cxa_atexit when building a cross, so assume
1472 if test x$use_cxa_atexit = xyes; then
1473 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1474 [Define if you want to use __cxa_atexit, rather than atexit, to
1475 register C++ destructors for local statics and global objects.
1476 This is essential for fully standards-compliant handling of
1477 destructors, but requires __cxa_atexit in libc.])
1481 # Look for a file containing extra machine modes.
1482 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1483 extra_modes_file='$(srcdir)'/config/${extra_modes}
1484 AC_SUBST(extra_modes_file)
1485 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1486 [Define to the name of a file containing a list of extra machine modes
1487 for this architecture.])
1490 # Convert extra_options into a form suitable for Makefile use.
1493 for f in $extra_options; do
1494 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1495 all_opt_files="$all_opt_files $srcdir/config/$f"
1497 AC_SUBST(extra_opt_files)
1499 # auto-host.h is the file containing items generated by autoconf and is
1500 # the first file included by config.h.
1501 # If host=build, it is correct to have bconfig include auto-host.h
1502 # as well. If host!=build, we are in error and need to do more
1503 # work to find out the build config parameters.
1504 if test x$host = x$build
1506 build_auto=auto-host.h
1508 # We create a subdir, then run autoconf in the subdir.
1509 # To prevent recursion we set host and build for the new
1510 # invocation of configure to the build for this invocation
1517 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1518 *) realsrcdir=../${srcdir};;
1520 saved_CFLAGS="${CFLAGS}"
1521 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1522 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1523 ${realsrcdir}/configure \
1524 --enable-languages=${enable_languages-all} \
1525 --target=$target_alias --host=$build_alias --build=$build_alias
1526 CFLAGS="${saved_CFLAGS}"
1528 # We just finished tests for the build machine, so rename
1529 # the file auto-build.h in the gcc directory.
1530 mv auto-host.h ../auto-build.h
1533 build_auto=auto-build.h
1535 AC_SUBST(build_subdir)
1537 tm_file="${tm_file} defaults.h"
1538 tm_p_file="${tm_p_file} tm-preds.h"
1539 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1540 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1541 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1542 # put this back in temporarily.
1543 xm_file="auto-host.h ansidecl.h ${xm_file}"
1550 # Compile in configure arguments.
1551 if test -f configargs.h ; then
1552 # Being re-configured.
1553 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1554 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1556 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1559 # Double all backslashes and backslash all quotes to turn
1560 # gcc_config_arguments into a C string.
1561 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1562 $gcc_config_arguments
1564 gcc_config_arguments_str=`cat conftest.out`
1567 cat > configargs.h <<EOF
1568 /* Generated automatically. */
1569 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1570 static const char thread_model[] = "$thread_file";
1572 static const struct {
1573 const char *name, *value;
1574 } configure_default_options[] = $configure_default_options;
1579 gcc_BASEVER=`cat $srcdir/BASE-VER`
1580 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1581 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1582 if test -f $srcdir/REVISION ; then
1583 gcc_REVISION=`cat $srcdir/REVISION`
1587 cat > plugin-version.h <<EOF
1588 #include "configargs.h"
1590 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1591 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1592 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1593 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1595 static char basever[] = "$gcc_BASEVER";
1596 static char datestamp[] = "$gcc_DATESTAMP";
1597 static char devphase[] = "$gcc_DEVPHASE";
1598 static char revision[] = "$gcc_REVISION";
1600 /* FIXME plugins: We should make the version information more precise.
1601 One way to do is to add a checksum. */
1603 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1605 configuration_arguments};
1609 # Internationalization
1610 ZW_GNU_GETTEXT_SISTER_DIR
1612 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1613 # -liconv on the link line twice.
1614 case "$LIBINTL" in *$LIBICONV*)
1618 AC_ARG_ENABLE(secureplt,
1619 [AS_HELP_STRING([--enable-secureplt],
1620 [enable -msecure-plt by default for PowerPC])],
1623 AC_ARG_ENABLE(leading-mingw64-underscores,
1624 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1625 [enable leading underscores on 64 bit mingw targets]),
1627 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1628 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1629 [Define if we should use leading underscore on 64 bit mingw targets])])
1632 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1635 AC_ARG_ENABLE(frame-pointer,
1636 [AS_HELP_STRING([--enable-frame-pointer],
1637 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1640 linux* | darwin[[8912]]*)
1641 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1643 enable_frame_pointer=no
1646 enable_frame_pointer=yes
1651 # Windows32 Registry support for specifying GCC installation paths.
1652 AC_ARG_ENABLE(win32-registry,
1653 [AS_HELP_STRING([--disable-win32-registry],
1654 [disable lookup of installation paths in the
1655 Registry on Windows hosts])
1656 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1657 AS_HELP_STRING([--enable-win32-registry=KEY],
1658 [use KEY instead of GCC version as the last portion
1659 of the registry key])],,)
1662 win32 | pe | cygwin* | mingw32* | uwin*)
1663 if test "x$enable_win32_registry" != xno; then
1664 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1667 if test "x$enable_win32_registry" != xno; then
1668 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1669 [Define to 1 if installation paths should be looked up in the Windows
1670 Registry. Ignored on non-Windows hosts.])
1672 if test "x$enable_win32_registry" != xyes \
1673 && test "x$enable_win32_registry" != x; then
1674 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1675 [Define to be the last component of the Windows registry key under which
1676 to look for installation paths. The full key used will be
1677 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1678 The default is the GCC version number.])
1684 # Get an absolute path to the GCC top-level source directory
1685 holddir=`${PWDCMD-pwd}`
1687 topdir=`${PWDCMD-pwd}`
1690 # Conditionalize the makefile for this host machine.
1692 for f in ${host_xmake_file}
1694 if test -f ${srcdir}/config/$f
1696 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1700 # Conditionalize the makefile for this target machine.
1702 for f in ${tmake_file}
1704 if test -f ${srcdir}/config/$f
1706 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1709 tmake_file="${tmake_file_}"
1711 out_object_file=`basename $out_file .c`.o
1712 common_out_object_file=`basename $common_out_file .c`.o
1714 tm_file_list="options.h"
1715 tm_include_list="options.h insn-constants.h"
1716 for f in $tm_file; do
1719 f=`echo $f | sed 's/^..//'`
1720 tm_file_list="${tm_file_list} $f"
1721 tm_include_list="${tm_include_list} $f"
1724 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1725 tm_include_list="${tm_include_list} $f"
1728 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1729 tm_include_list="${tm_include_list} config/$f"
1736 for f in $tm_p_file; do
1739 tm_p_file_list="${tm_p_file_list} $f"
1740 tm_p_include_list="${tm_p_include_list} $f"
1743 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1744 tm_p_include_list="${tm_p_include_list} config/$f"
1750 for f in $xm_file; do
1753 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1754 xm_include_list="${xm_include_list} $f"
1757 xm_file_list="${xm_file_list} $f"
1758 xm_include_list="${xm_include_list} $f"
1761 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1762 xm_include_list="${xm_include_list} config/$f"
1768 host_xm_include_list=
1769 for f in $host_xm_file; do
1772 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1773 host_xm_include_list="${host_xm_include_list} $f"
1776 host_xm_file_list="${host_xm_file_list} $f"
1777 host_xm_include_list="${host_xm_include_list} $f"
1780 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1781 host_xm_include_list="${host_xm_include_list} config/$f"
1787 for f in $build_xm_file; do
1790 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1791 build_xm_include_list="${build_xm_include_list} $f"
1793 auto-build.h | auto-host.h )
1794 build_xm_file_list="${build_xm_file_list} $f"
1795 build_xm_include_list="${build_xm_include_list} $f"
1798 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1799 build_xm_include_list="${build_xm_include_list} config/$f"
1804 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1805 # cross-compiler which does not use the native headers and libraries.
1806 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1807 CROSS= AC_SUBST(CROSS)
1808 ALL=all.internal AC_SUBST(ALL)
1809 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1811 if test "x$with_build_sysroot" != x; then
1812 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1814 # This value is used, even on a native system, because
1815 # CROSS_SYSTEM_HEADER_DIR is just
1816 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1817 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1820 if test x$host != x$target
1822 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1824 SYSTEM_HEADER_DIR=$build_system_header_dir
1825 case "$host","$target" in
1826 # Darwin crosses can use the host system's libraries and headers,
1827 # because of the fat library support. Of course, it must be the
1828 # same version of Darwin on both sides. Allow the user to
1829 # just say --target=foo-darwin without a version number to mean
1830 # "the version on this system".
1831 *-*-darwin*,*-*-darwin*)
1832 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1833 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1834 if test $hostos = $targetos -o $targetos = darwin ; then
1836 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1841 i?86-*-*,x86_64-*-* \
1842 | powerpc*-*-*,powerpc64*-*-*)
1843 CROSS="$CROSS -DNATIVE_CROSS" ;;
1848 if test "x$with_headers" = x; then
1855 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1856 SYSTEM_HEADER_DIR=$build_system_header_dir
1859 # If this is a cross-compiler that does not
1860 # have its own set of headers then define
1863 # If this is using newlib, without having the headers available now,
1864 # then define inhibit_libc in LIBGCC2_CFLAGS.
1865 # This prevents libgcc2 from containing any code which requires libc
1867 : ${inhibit_libc=false}
1868 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1869 test x$with_newlib = xyes ; } &&
1870 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1873 AC_SUBST(inhibit_libc)
1875 # When building gcc with a cross-compiler, we need to adjust things so
1876 # that the generator programs are still built with the native compiler.
1877 # Also, we cannot run fixincludes.
1879 # These are the normal (build=host) settings:
1880 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1881 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1882 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1883 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1884 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1885 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1887 # And these apply if build != host, or we are generating coverage data
1888 if test x$build != x$host || test "x$coverage_flags" != x
1890 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1891 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1894 # Expand extra_headers to include complete path.
1895 # This substitutes for lots of t-* files.
1897 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1898 for file in ${extra_headers} ; do
1899 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1902 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1903 if test x"$use_gcc_tgmath" = xyes
1904 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1907 # Define collect2 in Makefile.
1908 case $host_can_use_collect2 in
1910 *) collect2='collect2$(exeext)' ;;
1912 AC_SUBST([collect2])
1914 # Add a definition of USE_COLLECT2 if system wants one.
1915 case $use_collect2 in
1916 no) use_collect2= ;;
1919 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1920 xm_defines="${xm_defines} USE_COLLECT2"
1921 case $host_can_use_collect2 in
1923 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1929 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1930 [Define to the name of the LTO plugin DSO that must be
1931 passed to the linker's -plugin=LIB option.])
1933 # ---------------------------
1934 # Assembler & linker features
1935 # ---------------------------
1937 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1938 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1939 # However when ld-new is first executed from the build tree, libtool will
1940 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1941 # to the build tree. While doing this we need to use the previous-stage
1942 # linker, or we have an infinite loop. The presence of a shell script as
1943 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1944 # the gcc/collect-ld script. So we need to know how libtool works, or
1945 # exec-tool will fail.
1947 m4_defun([_LT_CONFIG_COMMANDS], [])
1950 AC_SUBST(enable_fast_install)
1952 # Identify the assembler which will work hand-in-glove with the newly
1953 # built GCC, so that we can examine its features. This is the assembler
1954 # which will be driven by the driver program.
1956 # If build != host, and we aren't building gas in-tree, we identify a
1957 # build->target assembler and hope that it will have the same features
1958 # as the host->target assembler we'll be using.
1959 gcc_cv_gas_major_version=
1960 gcc_cv_gas_minor_version=
1961 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1963 m4_pattern_allow([AS_FOR_TARGET])dnl
1964 AS_VAR_SET_IF(gcc_cv_as,, [
1965 if test -x "$DEFAULT_ASSEMBLER"; then
1966 gcc_cv_as="$DEFAULT_ASSEMBLER"
1967 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1968 && test -f ../gas/Makefile \
1969 && test x$build = x$host; then
1970 gcc_cv_as=../gas/as-new$build_exeext
1971 elif test -x as$build_exeext; then
1972 # Build using assembler in the current directory.
1973 gcc_cv_as=./as$build_exeext
1974 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1975 gcc_cv_as="$AS_FOR_TARGET"
1977 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1980 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1981 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1982 case "$ORIGINAL_AS_FOR_TARGET" in
1983 ./as | ./as$build_exeext) ;;
1984 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1987 AC_MSG_CHECKING(what assembler to use)
1988 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1989 # Single tree build which includes gas. We want to prefer it
1990 # over whatever linker top-level may have detected, since
1991 # we'll use what we're building after installation anyway.
1992 AC_MSG_RESULT(newly built gas)
1994 _gcc_COMPUTE_GAS_VERSION
1995 in_tree_gas_is_elf=no
1996 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1997 || (grep 'obj_format = multi' ../gas/Makefile \
1998 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2000 in_tree_gas_is_elf=yes
2003 AC_MSG_RESULT($gcc_cv_as)
2007 # Identify the linker which will work hand-in-glove with the newly
2008 # built GCC, so that we can examine its features. This is the linker
2009 # which will be driven by the driver program.
2011 # If build != host, and we aren't building gas in-tree, we identify a
2012 # build->target linker and hope that it will have the same features
2013 # as the host->target linker we'll be using.
2014 gcc_cv_gld_major_version=
2015 gcc_cv_gld_minor_version=
2016 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2017 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2019 AS_VAR_SET_IF(gcc_cv_ld,, [
2020 if test -x "$DEFAULT_LINKER"; then
2021 gcc_cv_ld="$DEFAULT_LINKER"
2022 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2023 && test -f ../ld/Makefile \
2024 && test x$build = x$host; then
2025 gcc_cv_ld=../ld/ld-new$build_exeext
2026 elif test -x collect-ld$build_exeext; then
2027 # Build using linker in the current directory.
2028 gcc_cv_ld=./collect-ld$build_exeext
2029 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2030 gcc_cv_ld="$LD_FOR_TARGET"
2032 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2035 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2036 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2037 # if the PLUGIN_LD is set ld-new, just have it as ld
2038 # as that is the installed named.
2039 if test x$PLUGIN_LD_SUFFIX = xld-new \
2040 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2043 AC_ARG_WITH(plugin-ld,
2044 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2045 [if test x"$withval" != x; then
2046 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2047 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2049 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2050 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2052 # Check to see if we are using gold instead of ld
2053 AC_MSG_CHECKING(whether we are using gold)
2055 if test x$gcc_cv_ld != x; then
2056 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2057 | grep "GNU gold" > /dev/null; then
2061 AC_MSG_RESULT($ld_is_gold)
2063 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2064 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2065 case "$ORIGINAL_LD_FOR_TARGET" in
2066 ./collect-ld | ./collect-ld$build_exeext) ;;
2067 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2070 AC_MSG_CHECKING(what linker to use)
2071 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2072 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2073 # Single tree build which includes ld. We want to prefer it
2074 # over whatever linker top-level may have detected, since
2075 # we'll use what we're building after installation anyway.
2076 AC_MSG_RESULT(newly built ld)
2078 in_tree_ld_is_elf=no
2079 if (grep 'EMUL = .*elf' ../ld/Makefile \
2080 || grep 'EMUL = .*linux' ../ld/Makefile \
2081 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2082 in_tree_ld_is_elf=yes
2083 elif test "$ld_is_gold" = yes; then
2084 in_tree_ld_is_elf=yes
2086 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
2089 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2090 if test x$gcc_cv_gld_version != x; then
2094 case $gcc_cv_gld_version in
2097 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2100 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2101 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2104 AC_MSG_RESULT($gcc_cv_ld)
2108 # Figure out what nm we will be using.
2109 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2110 AS_VAR_SET_IF(gcc_cv_nm,, [
2111 if test -f $gcc_cv_binutils_srcdir/configure.in \
2112 && test -f ../binutils/Makefile \
2113 && test x$build = x$host; then
2114 gcc_cv_nm=../binutils/nm-new$build_exeext
2115 elif test -x nm$build_exeext; then
2116 gcc_cv_nm=./nm$build_exeext
2117 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2118 gcc_cv_nm="$NM_FOR_TARGET"
2120 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2123 AC_MSG_CHECKING(what nm to use)
2124 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2125 # Single tree build which includes binutils.
2126 AC_MSG_RESULT(newly built nm)
2129 AC_MSG_RESULT($gcc_cv_nm)
2133 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2134 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2135 case "$ORIGINAL_NM_FOR_TARGET" in
2136 ./nm | ./nm$build_exeext) ;;
2137 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2141 # Figure out what objdump we will be using.
2142 AS_VAR_SET_IF(gcc_cv_objdump,, [
2143 if test -f $gcc_cv_binutils_srcdir/configure.in \
2144 && test -f ../binutils/Makefile \
2145 && test x$build = x$host; then
2146 # Single tree build which includes binutils.
2147 gcc_cv_objdump=../binutils/objdump$build_exeext
2148 elif test -x objdump$build_exeext; then
2149 gcc_cv_objdump=./objdump$build_exeext
2150 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2151 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2153 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2156 AC_MSG_CHECKING(what objdump to use)
2157 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2158 # Single tree build which includes binutils.
2159 AC_MSG_RESULT(newly built objdump)
2160 elif test x$gcc_cv_objdump = x; then
2161 AC_MSG_RESULT(not found)
2163 AC_MSG_RESULT($gcc_cv_objdump)
2166 # Figure out what readelf we will be using.
2167 AS_VAR_SET_IF(gcc_cv_readelf,, [
2168 if test -f $gcc_cv_binutils_srcdir/configure.in \
2169 && test -f ../binutils/Makefile \
2170 && test x$build = x$host; then
2171 # Single tree build which includes binutils.
2172 gcc_cv_readelf=../binutils/readelf$build_exeext
2173 elif test -x readelf$build_exeext; then
2174 gcc_cv_readelf=./readelf$build_exeext
2176 AC_PATH_PROG(gcc_cv_readelf, readelf)
2179 AC_MSG_CHECKING(what readelf to use)
2180 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2181 # Single tree build which includes binutils.
2182 AC_MSG_RESULT(newly built readelf)
2183 elif test x$gcc_cv_readelf = x; then
2184 AC_MSG_RESULT(not found)
2186 AC_MSG_RESULT($gcc_cv_readelf)
2189 # Figure out what assembler alignment features are present.
2190 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2194 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2195 [Define if your assembler supports .balign and .p2align.])])
2197 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2200 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2201 [Define if your assembler supports specifying the maximum number
2202 of bytes to skip when using the GAS .p2align command.])])
2204 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2207 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2208 [Define if your assembler supports .literal16.])])
2210 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2212 [conftest_label1: .word 0
2214 conftest_label2: .word 0
2216 [if test x$gcc_cv_nm != x; then
2217 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2218 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2219 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2221 else gcc_cv_as_subsection_m1=yes
2223 rm -f conftest.nm1 conftest.nm2
2225 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2226 [Define if your assembler supports .subsection and .subsection -1 starts
2227 emitting at the beginning of your section.])])
2229 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2232 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2234 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2236 [ .weakref foobar, barfnot],,
2237 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2239 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2242 .NSUBSPA $CODE$,COMDAT],,
2243 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2245 # .hidden needs to be supported in both the assembler and the linker,
2246 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2247 # This is irritatingly difficult to feature test for; we have to check the
2248 # date string after the version number. If we've got an in-tree
2249 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2251 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2252 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2256 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2257 # STV_HIDDEN, so disable .hidden support if so.
2259 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2260 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2261 cat > conftest.s <<EOF
2268 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2269 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2270 grep '\.hidden default' > /dev/null; then
2273 gcc_cv_as_hidden=yes
2276 # Assume bug is present if objdump is missing.
2281 gcc_cv_as_hidden=yes
2286 # Darwin as has some visibility support, though with a different syntax.
2287 gcc_cv_as_hidden=yes
2291 # gnu_indirect_function type is an extension proposed at
2292 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2293 # selection of function implementation
2294 AC_ARG_ENABLE(gnu-indirect-function,
2295 [AS_HELP_STRING([--enable-gnu-indirect-function],
2296 [enable the use of the @gnu_indirect_function to glibc systems])],
2297 [case $enable_gnu_indirect_function in
2299 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2300 Valid choices are 'yes' and 'no'.]) ;;
2302 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2304 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2305 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2306 [Define if your system supports gnu indirect functions.])
2310 if test $in_tree_ld != yes ; then
2311 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2312 if echo "$ld_ver" | grep GNU > /dev/null; then
2313 if test x"$ld_is_gold" = xyes; then
2314 # GNU gold --version looks like this:
2316 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2318 # We extract the binutils version which is more familiar and specific
2319 # than the gold version.
2320 ld_vers=`echo $ld_ver | sed -n \
2321 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2323 # GNU ld --version looks like this:
2325 # GNU ld (GNU Binutils) 2.21.51.20110225
2326 ld_vers=`echo $ld_ver | sed -n \
2327 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2329 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2330 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2331 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2332 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2336 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2339 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2340 # /usr/ccs/bin/ld has been configured.
2341 ld_ver=`$gcc_cv_ld -V 2>&1`
2342 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2343 ld_vers=`echo $ld_ver | sed -n \
2344 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2345 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2346 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2354 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2355 [[if test $in_tree_ld = yes ; then
2357 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2358 && test $in_tree_ld_is_elf = yes; then
2359 gcc_cv_ld_hidden=yes
2362 gcc_cv_ld_hidden=yes
2363 if test x"$ld_is_gold" = xyes; then
2365 elif echo "$ld_ver" | grep GNU > /dev/null; then
2367 mmix-knuth-mmixware)
2368 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2372 if test 0"$ld_date" -lt 20020404; then
2373 if test -n "$ld_date"; then
2374 # If there was date string, but was earlier than 2002-04-04, fail
2376 elif test -z "$ld_vers"; then
2377 # If there was no date string nor ld version number, something is wrong
2380 test -z "$ld_vers_patch" && ld_vers_patch=0
2381 if test "$ld_vers_major" -lt 2; then
2383 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2384 gcc_cv_ld_hidden="no"
2385 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2393 # Darwin ld has some visibility support.
2394 gcc_cv_ld_hidden=yes
2396 hppa64*-*-hpux* | ia64*-*-hpux*)
2397 gcc_cv_ld_hidden=yes
2399 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2400 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2401 # .symbolic was only added in Solaris 9 12/02.
2402 gcc_cv_ld_hidden=yes
2410 libgcc_visibility=no
2411 AC_SUBST(libgcc_visibility)
2412 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2413 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2414 libgcc_visibility=yes
2415 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2416 [Define if your assembler and linker support .hidden.])
2419 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2420 gcc_cv_ld_ro_rw_mix=unknown
2421 if test $in_tree_ld = yes ; then
2422 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2423 && test $in_tree_ld_is_elf = yes; then
2424 gcc_cv_ld_ro_rw_mix=read-write
2426 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2427 echo '.section myfoosect, "a"' > conftest1.s
2428 echo '.section myfoosect, "aw"' > conftest2.s
2429 echo '.byte 1' >> conftest2.s
2430 echo '.section myfoosect, "a"' > conftest3.s
2431 echo '.byte 0' >> conftest3.s
2432 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2433 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2434 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2435 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2436 conftest2.o conftest3.o > /dev/null 2>&1; then
2437 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2438 | sed -e '/myfoosect/!d' -e N`
2439 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2440 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2441 gcc_cv_ld_ro_rw_mix=read-only
2443 gcc_cv_ld_ro_rw_mix=read-write
2448 rm -f conftest.* conftest[123].*
2451 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2452 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2453 [Define if your linker links a mix of read-only
2454 and read-write sections into a read-write section.])
2456 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2458 gcc_AC_INITFINI_ARRAY
2460 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2461 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2469 [[# GAS versions before 2.11 do not support uleb128,
2470 # despite appearing to.
2471 # ??? There exists an elf-specific test that will crash
2472 # the assembler. Perhaps it's better to figure out whether
2473 # arbitrary sections are supported and try the test.
2474 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2475 if echo "$as_ver" | grep GNU > /dev/null; then
2476 as_vers=`echo $as_ver | sed -n \
2477 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2478 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2479 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2480 if test $as_major -eq 2 && test $as_minor -lt 11
2482 else gcc_cv_as_leb128=yes
2485 [AC_DEFINE(HAVE_AS_LEB128, 1,
2486 [Define if your assembler supports .sleb128 and .uleb128.])])
2488 # Check if we have assembler support for unwind directives.
2489 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2496 .cfi_escape 1, 2, 3, 4, 5
2500 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2501 # read-only and read-write sections, we need to make sure that the
2502 # assembler used emits read-write .eh_frame sections.
2503 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2504 if test "x$gcc_cv_objdump" != x; then
2505 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2506 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2507 gcc_cv_as_cfi_directive=no
2510 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2511 # On Solaris/x86, make sure that GCC and gas agree on using
2512 # read-only .eh_frame sections for 64-bit.
2513 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2514 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2515 sed -e /.eh_frame/!d -e N | \
2516 grep READONLY > /dev/null; then
2517 gcc_cv_as_cfi_directive=yes
2519 gcc_cv_as_cfi_directive=no
2523 gcc_cv_as_cfi_directive=yes
2528 # no objdump, err on the side of caution
2529 gcc_cv_as_cfi_directive=no
2532 gcc_cv_as_cfi_directive=yes
2536 gcc_cv_as_cfi_directive=yes
2539 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2540 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2544 .cfi_adjust_cfa_offset 64
2546 .cfi_adjust_cfa_offset 128
2549 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2550 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2551 gcc_cv_as_cfi_advance_working=yes
2555 # no objdump, err on the side of caution
2556 gcc_cv_as_cfi_advance_working=no
2558 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2559 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2560 [`if test $gcc_cv_as_cfi_directive = yes \
2561 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2562 [Define 0/1 if your assembler supports CFI directives.])
2564 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2565 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2566 gcc_cv_as_cfi_personality_directive, ,,
2569 .cfi_personality 0, symbol
2571 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2572 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2573 then echo 1; else echo 0; fi`],
2574 [Define 0/1 if your assembler supports .cfi_personality.])
2576 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2577 gcc_cv_as_cfi_sections_directive, ,,
2579 .cfi_sections .debug_frame, .eh_frame
2583 win32 | pe | cygwin* | mingw32* | uwin*)
2584 # Need to check that we generated the correct relocation for the
2585 # .debug_frame section. This was fixed for binutils 2.21.
2586 gcc_cv_as_cfi_sections_directive=no
2587 if test "x$gcc_cv_objdump" != x; then
2588 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2589 grep secrel > /dev/null; then
2590 gcc_cv_as_cfi_sections_directive=yes
2595 gcc_cv_as_cfi_sections_directive=yes
2598 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2599 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2600 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2601 then echo 1; else echo 0; fi`],
2602 [Define 0/1 if your assembler supports .cfi_sections.])
2604 # GAS versions up to and including 2.11.0 may mis-optimize
2606 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2614 .section .eh_frame,"aw",@progbits
2616 .4byte .LECIE1-.LSCIE1
2630 .4byte .LEFDE1-.LASFDE1
2632 .4byte .LASFDE1-__FRAME_BEGIN__
2640 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2641 cat > conftest.lit <<EOF
2642 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2643 0010 01000000 12000000 18000000 00000000 ................
2644 0020 08000000 04080000 0044 .........D @&t@
2646 cat > conftest.big <<EOF
2647 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2648 0010 00000001 00000012 00000018 00000000 ................
2649 0020 00000008 04000000 0844 .........D @&t@
2651 # If the assembler didn't choke, and we can objdump,
2652 # and we got the correct data, then succeed.
2653 # The text in the here-document typically retains its unix-style line
2654 # endings, while the output of objdump will use host line endings.
2655 # Therefore, use diff -b for the comparisons.
2656 if test x$gcc_cv_objdump != x \
2657 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2658 | tail -3 > conftest.got \
2659 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2660 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2662 gcc_cv_as_eh_frame=yes
2663 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2664 gcc_cv_as_eh_frame=buggy
2666 # Uh oh, what do we do now?
2667 gcc_cv_as_eh_frame=no
2670 if test $gcc_cv_as_eh_frame = buggy; then
2671 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2672 [Define if your assembler mis-optimizes .eh_frame data.])
2675 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2676 [elf,2,12,0], [--fatal-warnings],
2677 [.section .rodata.str, "aMS", @progbits, 1])
2678 if test $gcc_cv_as_shf_merge = no; then
2679 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2680 [elf,2,12,0], [--fatal-warnings],
2681 [.section .rodata.str, "aMS", %progbits, 1])
2683 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2684 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2685 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2687 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2688 gcc_cv_as_comdat_group,
2689 [elf,2,16,0], [--fatal-warnings],
2690 [.section .text,"axG",@progbits,.foo,comdat])
2691 if test $gcc_cv_as_comdat_group = yes; then
2692 gcc_cv_as_comdat_group_percent=no
2693 gcc_cv_as_comdat_group_group=no
2695 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2696 gcc_cv_as_comdat_group_percent,
2697 [elf,2,16,0], [--fatal-warnings],
2698 [.section .text,"axG",%progbits,.foo,comdat])
2699 if test $gcc_cv_as_comdat_group_percent = yes; then
2700 gcc_cv_as_comdat_group_group=no
2702 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2703 gcc_cv_as_comdat_group_group=no
2706 # Sun as uses a completely different syntax.
2711 .group foo,".text%foo",#comdat
2712 .section ".text%foo", #alloc,#execinstr,#progbits
2717 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2719 .group foo,.text%foo,#comdat
2720 .section .text%foo, "ax", @progbits
2726 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2727 gcc_cv_as_comdat_group_group,
2733 if test x"$ld_is_gold" = xyes; then
2735 elif test $in_tree_ld = yes ; then
2737 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2738 && test $in_tree_ld_is_elf = yes; then
2741 elif echo "$ld_ver" | grep GNU > /dev/null; then
2743 if test 0"$ld_date" -lt 20050308; then
2744 if test -n "$ld_date"; then
2745 # If there was date string, but was earlier than 2005-03-08, fail
2747 elif test "$ld_vers_major" -lt 2; then
2749 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2756 *-*-solaris2.1[1-9]*)
2758 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2759 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2762 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2763 # least ld version 1.2267.
2764 if test "$ld_vers_major" -gt 1; then
2766 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2768 elif test "$ld_vers_minor" -ge 2267; then
2773 # Assume linkers other than GNU ld don't support COMDAT group.
2779 # Allow overriding the automatic COMDAT group tests above.
2780 AC_ARG_ENABLE(comdat,
2781 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2782 [comdat_group="$enable_comdat"])
2783 if test $comdat_group = no; then
2784 gcc_cv_as_comdat_group=no
2785 gcc_cv_as_comdat_group_percent=no
2786 gcc_cv_as_comdat_group_group=no
2788 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2789 [`if test $gcc_cv_as_comdat_group = yes \
2790 || test $gcc_cv_as_comdat_group_percent = yes \
2791 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2792 [Define 0/1 if your assembler and linker support COMDAT groups.])
2794 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2795 gcc_cv_as_discriminator,
2799 .loc 1 1 0 discriminator 1],,
2800 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2801 [Define if your assembler supports the .loc discriminator sub-directive.])])
2803 # Thread-local storage - the check is heavily parameterized.
2812 .section ".tdata","awT",@progbits
2815 ldq $27,__tls_get_addr($29) !literal!1
2816 lda $16,foo($29) !tlsgd!1
2817 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2818 ldq $27,__tls_get_addr($29) !literal!2
2819 lda $16,foo($29) !tlsldm!2
2820 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2821 ldq $1,foo($29) !gotdtprel
2822 ldah $2,foo($29) !dtprelhi
2823 lda $3,foo($2) !dtprello
2824 lda $4,foo($29) !dtprel
2825 ldq $1,foo($29) !gottprel
2826 ldah $2,foo($29) !tprelhi
2827 lda $3,foo($2) !tprello
2828 lda $4,foo($29) !tprel'
2831 tls_as_opt=--fatal-warnings
2833 cris-*-*|crisv32-*-*)
2835 .section ".tdata","awT",@progbits
2842 tls_as_opt=--fatal-warnings
2846 .section ".tdata","awT",@progbits
2858 .section ".tdata","awT",@progbits
2862 addil LT%foo-$tls_gdidx$,gp
2863 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2866 addil LT%foo-$tls_ldidx$,gp
2868 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2869 addil LR%foo-$tls_dtpoff$,%ret0
2870 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2872 addil LT%foo-$tls_ieoff$,gp
2873 ldw RT%foo-$tls_ieoff$(%r1),%t2
2876 addil LR%foo-$tls_leoff$,%t1
2877 ldo RR%foo-$tls_leoff$(%r1),%t2'
2880 tls_as_opt=--fatal-warnings
2884 .section ".tdata","awT",%progbits
2895 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2897 i[34567]86-*-solaris2.*)
2899 tga_func=___tls_get_addr
2901 x86_64-*-solaris2.1[0-9]*)
2903 tga_func=__tls_get_addr
2909 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2911 .section .tdata,"awt",@progbits'
2915 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2916 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2920 .section ".tdata","awT",@progbits'
2923 tls_as_opt="--fatal-warnings"
2925 conftest_s="$conftest_s
2929 leal foo@tlsgd(,%ebx,1), %eax
2930 leal foo@tlsldm(%ebx), %eax
2931 leal foo@dtpoff(%eax), %edx
2932 movl foo@gottpoff(%ebx), %eax
2933 subl foo@gottpoff(%ebx), %eax
2934 addl foo@gotntpoff(%ebx), %eax
2935 movl foo@indntpoff, %eax
2936 movl \$foo@tpoff, %eax
2937 subl \$foo@tpoff, %eax
2938 leal foo@ntpoff(%ecx), %eax"
2942 .section ".tdata","awT",@progbits
2946 leaq foo@TLSGD(%rip), %rdi
2947 leaq foo@TLSLD(%rip), %rdi
2948 leaq foo@DTPOFF(%rax), %rdx
2949 movq foo@GOTTPOFF(%rip), %rax
2950 movq $foo@TPOFF, %rax'
2953 tls_as_opt=--fatal-warnings
2957 .section ".tdata","awT",@progbits
2960 addl r16 = @ltoff(@dtpmod(foo#)), gp
2961 addl r17 = @ltoff(@dtprel(foo#)), gp
2962 addl r18 = @ltoff(@tprel(foo#)), gp
2963 addl r19 = @dtprel(foo#), gp
2964 adds r21 = @dtprel(foo#), r13
2965 movl r23 = @dtprel(foo#)
2966 addl r20 = @tprel(foo#), gp
2967 adds r22 = @tprel(foo#), r13
2968 movl r24 = @tprel(foo#)'
2971 tls_as_opt=--fatal-warnings
2975 .section .tdata,"awT",@progbits
2979 addik r5,r20,x@TLSGD
2980 addik r5,r20,x@TLSLDM'
2983 tls_as_opt='--fatal-warnings'
2987 .section .tdata,"awT",@progbits
2991 addiu $4, $28, %tlsgd(x)
2992 addiu $4, $28, %tlsldm(x)
2993 lui $4, %dtprel_hi(x)
2994 addiu $4, $4, %dtprel_lo(x)
2995 lw $4, %gottprel(x)($28)
2996 lui $4, %tprel_hi(x)
2997 addiu $4, $4, %tprel_lo(x)'
3000 tls_as_opt='-32 --fatal-warnings'
3004 .section .tdata,"awT",@progbits
3009 move.l x@TLSGD(%a5),%a0
3010 move.l x@TLSLDM(%a5),%a0
3011 move.l x@TLSLDO(%a5),%a0
3012 move.l x@TLSIE(%a5),%a0
3013 move.l x@TLSLE(%a5),%a0'
3016 tls_as_opt='--fatal-warnings'
3020 .section ".tdata","awT",%progbits
3024 add x0, x0, #:tlsgd_lo12:x
3029 tls_as_opt='--fatal-warnings'
3033 .extern __get_tpointer
3051 .section ".tdata","awT",@progbits
3059 addi 3,2,ld0@got@tlsgd
3065 addi 3,2,x1@got@tlsld
3071 addis 9,3,x2@dtprel@ha
3072 addi 9,9,x2@dtprel@l
3075 ld 9,x3@got@dtprel(2)
3081 tls_as_opt="-a64 --fatal-warnings"
3085 .section ".tdata","awT",@progbits
3093 addi 3,31,ld0@got@tlsgd
3095 addi 3,31,x1@got@tlsld
3098 addis 9,3,x2@dtprel@ha
3099 addi 9,9,x2@dtprel@l
3100 lwz 9,x3@got@tprel(31)
3103 addis 9,2,x2@tprel@ha
3104 addi 9,9,x2@tprel@l'
3107 tls_as_opt="-a32 --fatal-warnings"
3111 .section ".tdata","awT",@progbits
3120 l %r1,foo@GOTNTPOFF(%r12)
3121 l %r1,0(%r1):tls_load:foo
3122 bas %r14,0(%r1,%r13):tls_gdcall:foo
3123 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3126 tls_as_opt="-m31 --fatal-warnings"
3130 .section ".tdata","awT",@progbits
3138 lg %r1,foo@GOTNTPOFF(%r12)
3139 larl %r1,foo@INDNTPOFF
3140 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3141 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3144 tls_as_opt="-m64 -Aesame --fatal-warnings"
3146 sh-*-* | sh[34]-*-*)
3148 .section ".tdata","awT",@progbits
3158 tls_as_opt=--fatal-warnings
3162 sparc*-sun-solaris2.*)
3164 tga_func=__tls_get_addr
3170 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3172 .section ".tdata",#alloc,#write,#tls'
3177 .section ".tdata","awT",@progbits'
3180 tls_as_opt="-32 --fatal-warnings"
3182 conftest_s="$conftest_s
3185 sethi %tgd_hi22(foo), %o0
3186 add %o0, %tgd_lo10(foo), %o1
3187 add %l7, %o1, %o0, %tgd_add(foo)
3188 call __tls_get_addr, %tgd_call(foo)
3189 sethi %tldm_hi22(foo), %l1
3190 add %l1, %tldm_lo10(foo), %l2
3191 add %l7, %l2, %o0, %tldm_add(foo)
3192 call __tls_get_addr, %tldm_call(foo)
3193 sethi %tldo_hix22(foo), %l3
3194 xor %l3, %tldo_lox10(foo), %l4
3195 add %o0, %l4, %l5, %tldo_add(foo)
3196 sethi %tie_hi22(foo), %o3
3197 add %o3, %tie_lo10(foo), %o3
3198 ld [%l7 + %o3], %o2, %tie_ld(foo)
3199 add %g7, %o2, %o4, %tie_add(foo)
3200 sethi %tle_hix22(foo), %l1
3201 xor %l1, %tle_lox10(foo), %o5
3202 ld [%g7 + %o5], %o1"
3206 .section ".tdata","awT",@progbits
3209 addli r0, zero, tls_gd(foo)
3210 auli r0, zero, tls_gd_ha16(foo)
3211 addli r0, r0, tls_gd_lo16(foo)
3213 addli r0, zero, tls_ie(foo)
3214 auli r0, r0, tls_ie_ha16(foo)
3215 addli r0, r0, tls_ie_lo16(foo)'
3218 tls_as_opt="--fatal-warnings"
3222 .section ".tdata","awT",@progbits
3225 shl16insli r0, zero, hw0_last_tls_gd(foo)
3226 shl16insli r0, zero, hw1_last_tls_gd(foo)
3227 shl16insli r0, r0, hw0_tls_gd(foo)
3229 shl16insli r0, zero, hw1_last_tls_ie(foo)
3230 shl16insli r0, r0, hw0_tls_ie(foo)'
3233 tls_as_opt="--fatal-warnings"
3237 .section ".tdata","awT",@progbits
3240 movi a8, foo@TLSFUNC
3241 movi a10, foo@TLSARG
3242 callx8.tls a8, foo@TLSCALL'
3249 if test "x$enable_tls" = xno ; then
3250 : # TLS explicitly disabled.
3251 elif test "x$enable_tls" = xyes ; then
3252 set_have_as_tls=yes # TLS explicitly enabled.
3253 elif test -z "$tls_first_major"; then
3254 : # If we don't have a check, assume no support.
3256 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3257 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3258 [set_have_as_tls=yes])
3261 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3262 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3263 # Sun style that Sun ld and GCC don't support any longer.
3265 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3267 # Check ld and ld.so.1 TLS support.
3268 if echo "$ld_ver" | grep GNU > /dev/null; then
3269 # Assume all interesting versions of GNU ld have TLS support.
3270 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3274 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3276 min_tls_ld_vers_minor=374
3278 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3279 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3280 min_tls_ld_vers_minor=343
3283 if test "$ld_vers_major" -gt 1 || \
3284 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3290 AC_MSG_RESULT($ld_tls_support)
3293 save_LDFLAGS="$LDFLAGS"
3297 AC_MSG_CHECKING(library containing $tga_func)
3298 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3299 # (32-bit x86) only lived in libthread, so check for that. Keep
3300 # set_have_as_tls if found, disable if not.
3301 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3302 # Clear LIBS if we cannot support TLS.
3303 if test $set_have_as_tls = no; then
3306 # Always define LIB_TLS_SPEC, even without TLS support.
3307 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3308 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3309 AC_MSG_RESULT($LIBS)
3312 LDFLAGS="$save_LDFLAGS"
3315 if test $set_have_as_tls = yes ; then
3316 AC_DEFINE(HAVE_AS_TLS, 1,
3317 [Define if your assembler and linker support thread-local storage.])
3320 # Target-specific assembler checks.
3322 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3323 gcc_cv_ld_static_dynamic=no
3324 gcc_cv_ld_static_option='-Bstatic'
3325 gcc_cv_ld_dynamic_option='-Bdynamic'
3326 if test $in_tree_ld = yes ; then
3327 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3328 gcc_cv_ld_static_dynamic=yes
3330 elif test x$gcc_cv_ld != x; then
3331 # Check if linker supports -Bstatic/-Bdynamic option
3332 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3333 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3334 gcc_cv_ld_static_dynamic=yes
3337 # AIX ld uses -b flags
3338 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3339 gcc_cv_ld_static_dynamic=yes
3340 gcc_cv_ld_static_option="-bstatic"
3341 gcc_cv_ld_dynamic_option="-bdynamic"
3343 # HP-UX ld uses -a flags to select between shared and archive.
3345 if test x"$gnu_ld" = xno; then
3346 gcc_cv_ld_static_dynamic=yes
3347 gcc_cv_ld_static_option="-aarchive_shared"
3348 gcc_cv_ld_dynamic_option="-adefault"
3351 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3353 gcc_cv_ld_static_dynamic=yes
3358 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3359 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3360 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3361 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3362 [Define to the linker option to disable use of shared objects.])
3363 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3364 [Define to the linker option to enable use of shared objects.])
3366 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3368 if test x"$demangler_in_ld" = xyes; then
3369 AC_MSG_CHECKING(linker --demangle support)
3370 gcc_cv_ld_demangle=no
3371 if test $in_tree_ld = yes; then
3372 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3373 gcc_cv_ld_demangle=yes
3375 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3376 # Check if the GNU linker supports --demangle option
3377 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3378 gcc_cv_ld_demangle=yes
3381 if test x"$gcc_cv_ld_demangle" = xyes; then
3382 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3383 [Define if your linker supports --demangle option.])
3385 AC_MSG_RESULT($gcc_cv_ld_demangle)
3388 AC_MSG_CHECKING(linker plugin support)
3390 if test -f liblto_plugin.la; then
3391 save_ld_ver="$ld_ver"
3392 save_ld_vers_major="$ld_vers_major"
3393 save_ld_vers_minor="$ld_vers_minor"
3394 save_ld_is_gold="$ld_is_gold"
3398 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3400 # FIXME: ld_is_gold?
3401 ld_vers_major="$gcc_cv_gld_major_version"
3402 ld_vers_minor="$gcc_cv_gld_minor_version"
3404 # Determine plugin linker version.
3405 # FIXME: Partial duplicate from above, generalize.
3407 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3408 if echo "$ld_ver" | grep GNU > /dev/null; then
3409 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3411 ld_vers=`echo $ld_ver | sed -n \
3412 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3414 ld_vers=`echo $ld_ver | sed -n \
3415 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3417 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3418 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3423 # Determine plugin support.
3424 if echo "$ld_ver" | grep GNU > /dev/null; then
3425 # Require GNU ld or gold 2.21+ for plugin support by default.
3426 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3428 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3429 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3434 ld_ver="$save_ld_ver"
3435 ld_vers_major="$save_ld_vers_major"
3436 ld_vers_minor="$save_ld_vers_minor"
3437 ld_is_gold="$save_ld_is_gold"
3439 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3440 [Define to the level of your linker's plugin support.])
3441 AC_MSG_RESULT($gcc_cv_lto_plugin)
3444 # All TARGET_ABI_OSF targets.
3445 alpha*-*-linux* | alpha*-*-*bsd*)
3446 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3447 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3450 extbl $3, $2, $3 !lituse_bytoff!1
3451 ldq $2, a($29) !literal!1
3452 ldq $4, b($29) !literal!2
3453 ldq_u $3, 0($2) !lituse_base!1
3454 ldq $27, f($29) !literal!5
3455 jsr $26, ($27), f !lituse_jsr!5
3456 ldah $29, 0($26) !gpdisp!3
3457 lda $0, c($29) !gprel
3458 ldah $1, d($29) !gprelhigh
3459 lda $1, d($1) !gprellow
3460 lda $29, 0($29) !gpdisp!3],,
3461 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3462 [Define if your assembler supports explicit relocations.])])
3463 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3464 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3467 ldq $27, a($29) !literal!1
3468 jsr $26, ($27), a !lituse_jsrdirect!1],,
3469 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3470 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3474 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3475 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3476 [-no-mul-bug-abort], [.text],,
3477 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3478 [Define if your assembler supports the -no-mul-bug-abort option.])])
3482 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3483 [.register %g2, #scratch],,
3484 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3485 [Define if your assembler supports .register.])])
3487 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3488 [.section "nobits",#alloc,#write,#nobits
3489 .section "progbits",#alloc,#write,#progbits])
3490 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3491 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3492 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3494 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3496 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3497 [Define if your assembler supports -relax option.])])
3499 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3500 gcc_cv_as_sparc_gotdata_op,,
3507 sethi %gdop_hix22(foo), %g1
3508 xor %g1, %gdop_lox10(foo), %g1
3509 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3510 [if test x$gcc_cv_ld != x \
3511 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3512 if test x$gcc_cv_objdump != x; then
3513 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3514 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3515 gcc_cv_as_sparc_gotdata_op=no
3517 gcc_cv_as_sparc_gotdata_op=yes
3522 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3523 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3525 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3526 gcc_cv_as_sparc_ua_pcrel,,
3534 .uaword %r_disp32(foo)],
3535 [if test x$gcc_cv_ld != x \
3536 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3537 gcc_cv_as_sparc_ua_pcrel=yes
3540 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3541 [Define if your assembler and linker support unaligned PC relative relocs.])
3543 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3544 gcc_cv_as_sparc_ua_pcrel_hidden,,
3549 .uaword %r_disp32(foo)
3550 .byte 0x32, 0x33, 0x34
3555 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3556 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3557 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3558 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3559 if $gcc_cv_objdump -R conftest 2> /dev/null \
3560 | grep 'DISP32' > /dev/null 2>&1; then
3563 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3567 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3568 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3569 ]) # unaligned pcrel relocs
3571 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3572 gcc_cv_as_sparc_offsetable_lo10,,
3575 or %g1, %lo(ab) + 12, %g1
3576 or %g1, %lo(ab + 12), %g1],
3577 [if test x$gcc_cv_objdump != x \
3578 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3579 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3580 gcc_cv_as_sparc_offsetable_lo10=yes
3582 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3583 [Define if your assembler supports offsetable %lo().])])
3585 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3586 gcc_cv_as_sparc_fmaf,,
3589 .register %g2, #scratch
3590 .register %g3, #scratch
3592 fmaddd %f0, %f2, %f4, %f6
3593 addxccc %g1, %g2, %g3
3594 fsrl32 %f2, %f4, %f8
3595 fnaddd %f10, %f12, %f14],,
3596 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3597 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3599 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3600 gcc_cv_as_sparc_sparc4,,
3603 .register %g2, #scratch
3604 .register %g3, #scratch
3607 1: cwbneg %g2, %g3, 1f
3610 aes_kexpand0 %f4, %f6, %f8
3611 des_round %f38, %f40, %f42, %f44
3612 camellia_f %f54, %f56, %f58, %f60
3613 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3614 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3615 [Define if your assembler supports SPARC4 instructions.])])
3619 i[34567]86-*-* | x86_64-*-*)
3623 # Full C++ conformance when using a shared libstdc++-v3 requires some
3624 # support from the Cygwin DLL, which in more recent versions exports
3625 # wrappers to aid in interposing and redirecting operators new, delete,
3626 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3627 # are configuring for a version of Cygwin that exports the wrappers.
3628 if test x$host = x$target && test x$host_cpu = xi686; then
3629 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3631 # Can't check presence of libc functions during cross-compile, so
3632 # we just have to assume we're building for an up-to-date target.
3633 gcc_ac_cygwin_dll_wrappers=yes
3635 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3636 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3637 [Define if you want to generate code by default that assumes that the
3638 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3641 cygwin* | pe | mingw32* | interix*)
3642 # Recent binutils allows the three-operand form of ".comm" on PE. This
3643 # definition is used unconditionally to initialise the default state of
3644 # the target option variable that governs usage of the feature.
3645 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3646 [2,19,52],,[.comm foo,1,32])
3647 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3648 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3649 [Define if your assembler supports specifying the alignment
3650 of objects allocated using the GAS .comm command.])
3651 # Used for DWARF 2 in PE
3652 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3653 gcc_cv_as_ix86_pe_secrel32,
3659 [if test x$gcc_cv_ld != x \
3660 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3661 gcc_cv_as_ix86_pe_secrel32=yes
3664 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3665 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3666 # Test if the assembler supports the extended form of the .section
3667 # directive that specifies section alignment. LTO support uses this,
3668 # but normally only after installation, so we warn but don't fail the
3669 # configure if LTO is enabled but the assembler does not support it.
3670 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3671 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3672 if test x$gcc_cv_as_section_has_align != xyes; then
3673 case ",$enable_languages," in
3675 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3679 # Test if the assembler supports the section flag 'e' for specifying
3680 # an excluded section.
3681 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3685 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3686 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3687 [Define if your assembler supports specifying the section flag e.])
3691 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3692 gcc_cv_as_ix86_filds,,,
3693 [filds mem; fists mem],,
3694 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3695 [Define if your assembler uses filds and fists mnemonics.])])
3697 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3698 gcc_cv_as_ix86_fildq,,,
3699 [fildq mem; fistpq mem],,
3700 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3701 [Define if your assembler uses fildq and fistq mnemonics.])])
3703 gcc_GAS_CHECK_FEATURE([cmov syntax],
3704 gcc_cv_as_ix86_cmov_sun_syntax,,,
3705 [cmovl.l %edx, %eax],,
3706 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3707 [Define if your assembler supports the Sun syntax for cmov.])])
3709 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3710 gcc_cv_as_ix86_ffreep,,,
3712 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3713 [Define if your assembler supports the ffreep mnemonic.])])
3715 gcc_GAS_CHECK_FEATURE([.quad directive],
3716 gcc_cv_as_ix86_quad,,,
3718 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3719 [Define if your assembler supports the .quad directive.])])
3721 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3722 gcc_cv_as_ix86_sahf,,,
3725 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3726 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3728 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3729 gcc_cv_as_ix86_interunit_movq,,,
3733 [AC_DEFINE(HAVE_AS_IX86_INTERUNIT_MOVQ, 1,
3734 [Define if your assembler supports interunit movq mnemonic.])])
3736 gcc_GAS_CHECK_FEATURE([hle prefixes],
3737 gcc_cv_as_ix86_hle,,,
3738 [lock xacquire cmpxchg %esi, (%ecx)],,
3739 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3740 [Define if your assembler supports HLE prefixes.])])
3742 gcc_GAS_CHECK_FEATURE([swap suffix],
3743 gcc_cv_as_ix86_swap,,,
3744 [movl.s %esp, %ebp],,
3745 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3746 [Define if your assembler supports the swap suffix.])])
3748 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3749 gcc_cv_as_ix86_diff_sect_delta,,,
3757 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3758 [Define if your assembler supports the subtraction of symbols in different sections.])])
3760 # These two are used unconditionally by i386.[ch]; it is to be defined
3761 # to 1 if the feature is present, 0 otherwise.
3762 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3763 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3769 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3770 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3771 [Define true if the assembler supports '.long foo@GOTOFF'.])
3773 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3774 gcc_cv_as_ix86_rep_lock_prefix,,,
3780 lock addl %edi, (%eax,%esi)
3781 lock orl $0, (%esp)],,
3782 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3783 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3785 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3786 gcc_cv_as_ix86_tlsgdplt,,,
3787 [call tls_gd@tlsgdplt],
3788 [if test x$gcc_cv_ld != x \
3789 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3790 gcc_cv_as_ix86_tlsgdplt=yes
3793 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3794 [Define if your assembler and linker support @tlsgdplt.])])
3796 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3797 gcc_cv_as_ix86_tlsldmplt,,,
3799 call tls_ld@tlsldmplt],
3800 [if test x$gcc_cv_ld != x \
3801 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3802 gcc_cv_as_ix86_tlsldmplt=yes
3805 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3806 [Define if your assembler and linker support @tlsldmplt.])])
3811 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3812 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3814 addl r15 = @ltoffx(x#), gp
3816 ld8.mov r16 = [[r15]], x#],,
3817 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3818 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3824 *-*-aix*) conftest_s=' .machine "pwr5"
3828 gcc_GAS_CHECK_FEATURE([.machine directive support],
3829 gcc_cv_as_machine_directive,,,
3830 [ .machine ppc7400])
3831 if test x$gcc_cv_as_machine_directive != xyes; then
3832 echo "*** This target requires an assembler supporting \".machine\"" >&2
3833 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3834 test x$build = x$target && exit 1
3838 *) conftest_s=' .machine power4
3843 gcc_GAS_CHECK_FEATURE([mfcr field support],
3844 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3846 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3847 [Define if your assembler supports mfcr field.])])
3850 *-*-aix*) conftest_s=' .machine "pwr5"
3853 *) conftest_s=' .machine power5
3858 gcc_GAS_CHECK_FEATURE([popcntb support],
3859 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3861 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3862 [Define if your assembler supports popcntb field.])])
3865 *-*-aix*) conftest_s=' .machine "pwr5x"
3868 *) conftest_s=' .machine power5
3873 gcc_GAS_CHECK_FEATURE([fp round support],
3874 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3876 [AC_DEFINE(HAVE_AS_FPRND, 1,
3877 [Define if your assembler supports fprnd.])])
3880 *-*-aix*) conftest_s=' .machine "pwr6"
3883 *) conftest_s=' .machine power6
3888 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3889 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3891 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3892 [Define if your assembler supports mffgpr and mftgpr.])])
3895 *-*-aix*) conftest_s=' .csect .text[[PR]]
3897 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3901 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3902 *) conftest_s=' .text
3904 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3907 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3908 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3910 [AC_DEFINE(HAVE_AS_REL16, 1,
3911 [Define if your assembler supports R_PPC_REL16 relocs.])])
3914 *-*-aix*) conftest_s=' .machine "pwr6"
3917 *) conftest_s=' .machine power6
3922 gcc_GAS_CHECK_FEATURE([compare bytes support],
3923 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3925 [AC_DEFINE(HAVE_AS_CMPB, 1,
3926 [Define if your assembler supports cmpb.])])
3929 *-*-aix*) conftest_s=' .machine "pwr6"
3932 *) conftest_s=' .machine power6
3937 gcc_GAS_CHECK_FEATURE([decimal float support],
3938 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3940 [AC_DEFINE(HAVE_AS_DFP, 1,
3941 [Define if your assembler supports DFP instructions.])])
3944 *-*-aix*) conftest_s=' .machine "pwr7"
3947 *) conftest_s=' .machine power7
3952 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3953 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3955 [AC_DEFINE(HAVE_AS_VSX, 1,
3956 [Define if your assembler supports VSX instructions.])])
3959 *-*-aix*) conftest_s=' .machine "pwr7"
3962 *) conftest_s=' .machine power7
3967 gcc_GAS_CHECK_FEATURE([popcntd support],
3968 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3970 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3971 [Define if your assembler supports POPCNTD instructions.])])
3974 *-*-aix*) conftest_s=' .machine "pwr8"
3975 .csect .text[[PR]]';;
3976 *) conftest_s=' .machine power8
3980 gcc_GAS_CHECK_FEATURE([power8 support],
3981 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
3983 [AC_DEFINE(HAVE_AS_POWER8, 1,
3984 [Define if your assembler supports POWER8 instructions.])])
3987 *-*-aix*) conftest_s=' .csect .text[[PR]]
3989 *) conftest_s=' .text
3993 gcc_GAS_CHECK_FEATURE([lwsync support],
3994 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3996 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3997 [Define if your assembler supports LWSYNC instructions.])])
4000 *-*-aix*) conftest_s=' .machine "476"
4003 *) conftest_s=' .machine "476"
4008 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4009 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4011 [AC_DEFINE(HAVE_AS_DCI, 1,
4012 [Define if your assembler supports the DCI/ICI instructions.])])
4014 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4015 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4016 [.gnu_attribute 4,1],,
4017 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4018 [Define if your assembler supports .gnu_attribute.])])
4020 gcc_GAS_CHECK_FEATURE([tls marker support],
4021 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4022 [ bl __tls_get_addr(x@tlsgd)],,
4023 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4024 [Define if your assembler supports arg info for __tls_get_addr.])])
4028 gcc_GAS_CHECK_FEATURE([.ref support],
4029 gcc_cv_as_aix_ref, [2,21,0],,
4030 [ .csect stuff[[rw]]
4036 [AC_DEFINE(HAVE_AS_REF, 1,
4037 [Define if your assembler supports .ref])])
4043 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4044 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4045 [ lw $4,%gp_rel(foo)($4)],,
4046 [if test x$target_cpu_default = x
4047 then target_cpu_default=MASK_EXPLICIT_RELOCS
4048 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4050 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4051 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4052 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4053 [Define if the assembler understands -mno-shared.])])
4055 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4056 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4057 [.gnu_attribute 4,1],,
4058 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4059 [Define if your assembler supports .gnu_attribute.])])
4061 gcc_GAS_CHECK_FEATURE([.micromips support],
4062 gcc_cv_as_micromips_support,,[--fatal-warnings],
4064 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4065 [Define if your assembler supports the .set micromips directive])])
4067 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4068 gcc_cv_as_mips_dtprelword, [2,18,0],,
4069 [.section .tdata,"awT",@progbits
4073 .dtprelword x+0x8000],,
4074 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4075 [Define if your assembler supports .dtprelword.])])
4077 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4078 gcc_cv_as_mips_dspr1_mult,,,
4088 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4089 [Define if your assembler supports DSPR1 mult.])])
4091 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4092 gcc_cv_as_ld_jalr_reloc=no
4093 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4094 if test $in_tree_ld = yes ; then
4095 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4096 && test $in_tree_ld_is_elf = yes; then
4097 gcc_cv_as_ld_jalr_reloc=yes
4099 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4100 echo ' .ent x' > conftest.s
4101 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4102 echo ' ld $25,%call16(y)($28)' >> conftest.s
4103 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4104 echo '1: jalr $25' >> conftest.s
4105 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4106 echo '1: jalr $25' >> conftest.s
4107 echo ' .end x' >> conftest.s
4108 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4109 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4110 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4111 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4112 gcc_cv_as_ld_jalr_reloc=yes
4118 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4119 if test x$target_cpu_default = x; then
4120 target_cpu_default=MASK_RELAX_PIC_CALLS
4122 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4125 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4127 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4128 [gcc_cv_ld_mips_personality_relaxation],
4129 [gcc_cv_ld_mips_personality_relaxation=no
4130 if test $in_tree_ld = yes ; then
4131 if test "$gcc_cv_gld_major_version" -eq 2 \
4132 -a "$gcc_cv_gld_minor_version" -ge 21 \
4133 -o "$gcc_cv_gld_major_version" -gt 2; then
4134 gcc_cv_ld_mips_personality_relaxation=yes
4136 elif test x$gcc_cv_as != x \
4137 -a x$gcc_cv_ld != x \
4138 -a x$gcc_cv_readelf != x ; then
4139 cat > conftest.s <<EOF
4141 .cfi_personality 0x80,indirect_ptr
4148 .section .data,"aw",@progbits
4152 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4153 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4154 if $gcc_cv_readelf -d conftest 2>&1 \
4155 | grep TEXTREL > /dev/null 2>&1; then
4157 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4158 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4161 gcc_cv_ld_mips_personality_relaxation=yes
4165 rm -f conftest.s conftest.o conftest])
4166 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4167 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4168 [Define if your linker can relax absolute .eh_frame personality
4169 pointers into PC-relative form.])
4174 # Mips and HP-UX need the GNU assembler.
4175 # Linux on IA64 might be able to use the Intel assembler.
4178 mips*-*-* | *-*-hpux* )
4179 if test x$gas_flag = xyes \
4180 || test x"$host" != x"$build" \
4181 || test ! -x "$gcc_cv_as" \
4182 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4185 echo "*** This configuration requires the GNU assembler" >&2
4191 # ??? Not all targets support dwarf2 debug_line, even within a version
4192 # of gas. Moreover, we need to emit a valid instruction to trigger any
4193 # info to the output file. So, as supported targets are added to gas 2.11,
4194 # add some instruction here to (also) show we expect this might work.
4195 # ??? Once 2.11 is released, probably need to add first known working
4196 # version to the per-target configury.
4198 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4199 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4209 if test x"$insn" != x; then
4211 .file 1 \"conftest.s\"
4214 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4215 gcc_cv_as_dwarf2_debug_line,
4216 [elf,2,11,0],, [$conftest_s],
4217 [if test x$gcc_cv_objdump != x \
4218 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4219 | grep debug_line > /dev/null 2>&1; then
4220 gcc_cv_as_dwarf2_debug_line=yes
4223 # The .debug_line file table must be in the exact order that
4224 # we specified the files, since these indices are also used
4225 # by DW_AT_decl_file. Approximate this test by testing if
4226 # the assembler bitches if the same index is assigned twice.
4227 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4228 gcc_cv_as_dwarf2_file_buggy,,,
4232 if test $gcc_cv_as_dwarf2_debug_line = yes \
4233 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4234 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4235 [Define if your assembler supports dwarf2 .file/.loc directives,
4236 and preserves file table indices exactly as given.])
4239 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4240 gcc_cv_as_gdwarf2_flag,
4241 [elf,2,11,0], [--gdwarf2], [$insn],,
4242 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4243 [Define if your assembler supports the --gdwarf2 option.])])
4245 gcc_GAS_CHECK_FEATURE([--gstabs option],
4246 gcc_cv_as_gstabs_flag,
4247 [elf,2,11,0], [--gstabs], [$insn],
4248 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4249 # and warns about it, but still exits successfully. So check for
4251 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4253 else gcc_cv_as_gstabs_flag=yes
4255 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4256 [Define if your assembler supports the --gstabs option.])])
4258 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4259 gcc_cv_as_debug_prefix_map_flag,
4260 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4261 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4262 [Define if your assembler supports the --debug-prefix-map option.])])
4265 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4268 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4269 [Define if your assembler supports .lcomm with an alignment field.])])
4271 AC_ARG_ENABLE(gnu-unique-object,
4272 [AS_HELP_STRING([--enable-gnu-unique-object],
4273 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4274 [case $enable_gnu_unique_object in
4276 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4277 Valid choices are 'yes' and 'no'.]) ;;
4279 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4281 [.type foo, '$target_type_format_char'gnu_unique_object],,
4282 # We need to unquote above to to use the definition from config.gcc.
4283 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4284 [[if test x$host = x$build -a x$host = x$target &&
4285 ldd --version 2>/dev/null &&
4286 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4287 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4288 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4289 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4290 if test "$glibcnum" -ge 2011 ; then
4291 enable_gnu_unique_object=yes
4294 if test x$enable_gnu_unique_object = xyes; then
4295 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4296 [Define if your assembler supports @gnu_unique_object.])
4299 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4300 [gcc_cv_as_line_zero],
4301 [gcc_cv_as_line_zero=no
4302 if test $in_tree_gas = yes; then
4303 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4304 elif test "x$gcc_cv_as" != x; then
4305 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4306 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4307 test "x`cat conftest.out`" = x
4309 gcc_cv_as_line_zero=yes
4311 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4312 cat conftest.s >&AS_MESSAGE_LOG_FD
4313 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4314 cat conftest.out >&AS_MESSAGE_LOG_FD
4316 rm -f conftest.o conftest.s conftest.out
4318 if test "x$gcc_cv_as_line_zero" = xyes; then
4319 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4320 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4323 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4324 gcc_cv_ld_eh_frame_hdr=no
4325 if test $in_tree_ld = yes ; then
4326 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4327 && test $in_tree_ld_is_elf = yes; then
4328 gcc_cv_ld_eh_frame_hdr=yes
4330 elif test x$gcc_cv_ld != x; then
4331 if echo "$ld_ver" | grep GNU > /dev/null; then
4332 # Check if linker supports --eh-frame-hdr option
4333 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4334 gcc_cv_ld_eh_frame_hdr=yes
4339 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4340 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4341 gcc_cv_ld_eh_frame_hdr=yes
4347 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4348 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4349 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4350 [Define if your linker supports .eh_frame_hdr.])
4352 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4354 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4355 gcc_cv_ld_eh_frame_ciev3=no
4356 if test $in_tree_ld = yes ; then
4357 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4358 && test $in_tree_ld_is_elf = yes; then
4359 gcc_cv_ld_eh_frame_ciev3=yes
4361 elif test x$gcc_cv_ld != x; then
4362 if echo "$ld_ver" | grep GNU > /dev/null; then
4363 gcc_cv_ld_eh_frame_ciev3=yes
4364 if test 0"$ld_date" -lt 20040513; then
4365 if test -n "$ld_date"; then
4366 # If there was date string, but was earlier than 2004-05-13, fail
4367 gcc_cv_ld_eh_frame_ciev3=no
4368 elif test "$ld_vers_major" -lt 2; then
4369 gcc_cv_ld_eh_frame_ciev3=no
4370 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4371 gcc_cv_ld_eh_frame_ciev3=no
4377 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4378 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4379 gcc_cv_ld_eh_frame_ciev3=yes
4385 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4386 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4387 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4388 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4390 AC_MSG_CHECKING(linker position independent executable support)
4392 if test $in_tree_ld = yes ; then
4393 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4394 && test $in_tree_ld_is_elf = yes; then
4397 elif test x$gcc_cv_ld != x; then
4398 # Check if linker supports -pie option
4399 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4403 if test x"$gcc_cv_ld_pie" = xyes; then
4404 AC_DEFINE(HAVE_LD_PIE, 1,
4405 [Define if your linker supports -pie option.])
4407 AC_MSG_RESULT($gcc_cv_ld_pie)
4409 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4410 gcc_cv_ld_eh_gc_sections=no
4411 if test $in_tree_ld = yes ; then
4412 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4413 && test $in_tree_ld_is_elf = yes; then
4414 gcc_cv_ld_eh_gc_sections=yes
4416 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4417 cat > conftest.s <<EOF
4420 .type _start, @function
4423 .size _start, .-_start
4424 .section .text.foo,"ax",@progbits
4425 .type foo, @function
4429 .section .gcc_except_table.foo,"a",@progbits
4432 .section .eh_frame,"a",@progbits
4435 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4436 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4437 | grep "gc-sections option ignored" > /dev/null; then
4438 gcc_cv_ld_eh_gc_sections=no
4439 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4440 | grep gcc_except_table > /dev/null; then
4441 gcc_cv_ld_eh_gc_sections=yes
4442 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4443 if test x$gcc_cv_as_comdat_group != xyes; then
4444 gcc_cv_ld_eh_gc_sections=no
4445 cat > conftest.s <<EOF
4448 .type _start, @function
4451 .size _start, .-_start
4452 .section .gnu.linkonce.t.foo,"ax",@progbits
4453 .type foo, @function
4457 .section .gcc_except_table.foo,"a",@progbits
4460 .section .eh_frame,"a",@progbits
4463 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4464 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4465 | grep "gc-sections option ignored" > /dev/null; then
4466 gcc_cv_ld_eh_gc_sections=no
4467 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4468 | grep gcc_except_table > /dev/null; then
4469 gcc_cv_ld_eh_gc_sections=yes
4475 rm -f conftest.s conftest.o conftest
4479 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4480 gcc_cv_ld_eh_gc_sections=no
4483 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4484 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4485 [Define if your linker supports garbage collection of
4486 sections in presence of EH frames.])
4488 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4490 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4491 gcc_cv_ld_eh_gc_sections_bug=no
4492 if test $in_tree_ld = yes ; then
4493 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4494 && test $in_tree_ld_is_elf = yes; then
4495 gcc_cv_ld_eh_gc_sections_bug=yes
4497 elif test x$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
4498 gcc_cv_ld_eh_gc_sections_bug=yes
4499 cat > conftest.s <<EOF
4502 .type _start, @function
4505 .size _start, .-_start
4506 .section .text.startup.foo,"ax",@progbits
4507 .type foo, @function
4511 .section .gcc_except_table.foo,"a",@progbits
4514 .section .eh_frame,"a",@progbits
4517 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4518 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4519 | grep "gc-sections option ignored" > /dev/null; then
4521 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4522 | grep gcc_except_table > /dev/null; then
4523 gcc_cv_ld_eh_gc_sections_bug=no
4526 rm -f conftest.s conftest.o conftest
4528 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4529 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4530 [Define if your linker has buggy garbage collection of
4531 sections support when .text.startup.foo like sections are used.])
4533 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4539 AC_CACHE_CHECK(linker --as-needed support,
4540 gcc_cv_ld_as_needed,
4541 [gcc_cv_ld_as_needed=no
4542 gcc_cv_ld_as_needed_option='--as-needed'
4543 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4544 if test $in_tree_ld = yes ; then
4545 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4546 && test $in_tree_ld_is_elf = yes; then
4547 gcc_cv_ld_as_needed=yes
4549 elif test x$gcc_cv_ld != x; then
4550 # Check if linker supports --as-needed and --no-as-needed options
4551 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4552 gcc_cv_ld_as_needed=yes
4555 # Solaris 2 ld always supports -z ignore/-z record.
4557 gcc_cv_ld_as_needed=yes
4558 gcc_cv_ld_as_needed_option="-z ignore"
4559 gcc_cv_ld_no_as_needed_option="-z record"
4564 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4565 # dl_iterate_phdr, i.e. since Solaris 11.
4567 *-*-solaris2.1[[1-9]]*)
4569 i?86-*-* | x86_64-*-*)
4570 if echo "$ld_ver" | grep GNU > /dev/null; then
4571 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4572 gcc_cv_ld_as_needed=no
4578 gcc_cv_ld_as_needed=no
4582 if test x"$gcc_cv_ld_as_needed" = xyes; then
4583 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4584 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4585 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4586 [Define to the linker option to ignore unused dependencies.])
4587 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4588 [Define to the linker option to keep unused dependencies.])
4591 case "$target:$tm_file" in
4592 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4595 emul_name="-melf64lppc"
4598 emul_name="-melf64ppc"
4601 emul_name="-melf64ppc_fbsd"
4604 AC_CACHE_CHECK(linker support for omitting dot symbols,
4605 gcc_cv_ld_no_dot_syms,
4606 [gcc_cv_ld_no_dot_syms=no
4607 if test x"$ld_is_gold" = xyes; then
4608 gcc_cv_ld_no_dot_syms=yes
4609 elif test $in_tree_ld = yes ; then
4610 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4611 gcc_cv_ld_no_dot_syms=yes
4613 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4614 cat > conftest1.s <<EOF
4618 cat > conftest2.s <<EOF
4619 .section ".opd","aw"
4624 .quad .LEfoo,.TOC.@tocbase,0
4630 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4631 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4632 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4633 gcc_cv_ld_no_dot_syms=yes
4635 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4638 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4639 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4640 [Define if your PowerPC64 linker only needs function descriptor syms.])
4643 AC_CACHE_CHECK(linker large toc support,
4644 gcc_cv_ld_large_toc,
4645 [gcc_cv_ld_large_toc=no
4646 if test x"$ld_is_gold" = xyes; then
4647 gcc_cv_ld_large_toc=yes
4648 elif test $in_tree_ld = yes ; then
4649 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4650 gcc_cv_ld_large_toc=yes
4652 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4653 cat > conftest.s <<EOF
4654 .section ".tbss","awT",@nobits
4660 addis 9,13,ie0@got@tprel@ha
4661 ld 9,ie0@got@tprel@l(9)
4663 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4664 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4665 gcc_cv_ld_large_toc=yes
4667 rm -f conftest conftest.o conftest.s
4670 if test x"$gcc_cv_ld_large_toc" = xyes; then
4671 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4672 [Define if your PowerPC64 linker supports a large TOC.])
4679 AC_CACHE_CHECK(linker large toc support,
4680 gcc_cv_ld_large_toc,
4681 [gcc_cv_ld_large_toc=no
4682 if test x$gcc_cv_as != x ; then
4683 cat > conftest.s <<EOF
4693 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4694 gcc_cv_ld_large_toc=yes
4696 rm -f conftest conftest.o conftest.s
4699 if test x"$gcc_cv_ld_large_toc" = xyes; then
4700 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4701 [Define if your PowerPC64 linker supports a large TOC.])
4706 AC_CACHE_CHECK(linker --build-id support,
4708 [gcc_cv_ld_buildid=no
4709 if test $in_tree_ld = yes ; then
4710 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4711 "$gcc_cv_gld_minor_version" -ge 18 -o \
4712 "$gcc_cv_gld_major_version" -gt 2 \
4713 && test $in_tree_ld_is_elf = yes; then
4714 gcc_cv_ld_buildid=yes
4716 elif test x$gcc_cv_ld != x; then
4717 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4718 gcc_cv_ld_buildid=yes
4721 if test x"$gcc_cv_ld_buildid" = xyes; then
4722 AC_DEFINE(HAVE_LD_BUILDID, 1,
4723 [Define if your linker supports --build-id.])
4726 AC_ARG_ENABLE(linker-build-id,
4727 [AS_HELP_STRING([--enable-linker-build-id],
4728 [compiler will always pass --build-id to linker])],
4730 enable_linker_build_id=no)
4732 if test x"$enable_linker_build_id" = xyes; then
4733 if test x"$gcc_cv_ld_buildid" = xyes; then
4734 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4735 [Define if gcc should always pass --build-id to linker.])
4737 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4741 # In binutils 2.21, GNU ld gained support for new emulations fully
4742 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4743 AC_CACHE_CHECK(linker *_sol2 emulation support,
4744 gcc_cv_ld_sol2_emulation,
4745 [gcc_cv_ld_sol2_emulation=no
4746 if test $in_tree_ld = yes ; then
4747 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4748 "$gcc_cv_gld_minor_version" -ge 21 -o \
4749 "$gcc_cv_gld_major_version" -gt 2 \
4750 && test $in_tree_ld_is_elf = yes; then
4751 gcc_cv_ld_sol2_emulation=yes
4753 elif test x$gcc_cv_ld != x; then
4754 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4755 grep _sol2 > /dev/null; then
4756 gcc_cv_ld_sol2_emulation=yes
4759 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4760 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4761 [Define if your linker supports the *_sol2 emulations.])
4764 AC_CACHE_CHECK(linker --sysroot support,
4766 [gcc_cv_ld_sysroot=no
4767 if test $in_tree_ld = yes ; then
4768 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4769 gcc_cv_ld_sysroot=yes
4771 elif test x$gcc_cv_ld != x; then
4772 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4773 gcc_cv_ld_sysroot=yes
4776 if test x"$gcc_cv_ld_sysroot" = xyes; then
4777 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4778 [Define if your linker supports --sysroot.])
4781 if test x$with_sysroot = x && test x$host = x$target \
4782 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4783 && test "$prefix" != "NONE"; then
4784 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4785 [Define to PREFIX/include if cpp should also search that directory.])
4788 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4789 if test "x$with_headers" != x; then
4790 target_header_dir=$with_headers
4791 elif test "x$with_sysroot" = x; then
4792 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4793 elif test "x$with_build_sysroot" != "x"; then
4794 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4795 elif test "x$with_sysroot" = xyes; then
4796 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4798 target_header_dir="${with_sysroot}${native_system_header_dir}"
4801 target_header_dir=${native_system_header_dir}
4804 # Test for stack protector support in target C library.
4805 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4806 gcc_cv_libc_provides_ssp,
4807 [gcc_cv_libc_provides_ssp=no
4809 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4810 [# glibc 2.4 and later provides __stack_chk_fail and
4811 # either __stack_chk_guard, or TLS access to stack guard canary.
4812 if test -f $target_header_dir/features.h \
4813 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4814 $target_header_dir/features.h > /dev/null; then
4815 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4816 $target_header_dir/features.h > /dev/null; then
4817 gcc_cv_libc_provides_ssp=yes
4818 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4819 $target_header_dir/features.h > /dev/null \
4820 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4821 $target_header_dir/features.h > /dev/null; then
4822 gcc_cv_libc_provides_ssp=yes
4823 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4824 $target_header_dir/features.h > /dev/null && \
4825 test -f $target_header_dir/bits/uClibc_config.h && \
4826 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4827 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4828 gcc_cv_libc_provides_ssp=yes
4830 # all versions of Bionic support stack protector
4831 elif test -f $target_header_dir/sys/cdefs.h \
4832 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4833 $target_header_dir/sys/cdefs.h > /dev/null; then
4834 gcc_cv_libc_provides_ssp=yes
4838 # Avoid complicated tests (see
4839 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4840 # simply assert that glibc does provide this, which is true for all
4841 # realistically usable GNU/Hurd configurations.
4842 gcc_cv_libc_provides_ssp=yes;;
4843 *-*-darwin* | *-*-freebsd*)
4844 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4845 [echo "no __stack_chk_fail on this target"])
4847 *) gcc_cv_libc_provides_ssp=no ;;
4850 if test x$gcc_cv_libc_provides_ssp = xyes; then
4851 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4852 [Define if your target C library provides stack protector support])
4855 # Test for <sys/sdt.h> on the target.
4856 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4857 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4859 if test -f $target_header_dir/sys/sdt.h; then
4861 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4862 [Define if your target C library provides sys/sdt.h])
4864 AC_MSG_RESULT($have_sys_sdt_h)
4866 # Check if TFmode long double should be used by default or not.
4867 # Some glibc targets used DFmode long double, but with glibc 2.4
4868 # and later they can use TFmode.
4870 powerpc*-*-linux* | \
4874 AC_ARG_WITH(long-double-128,
4875 [AS_HELP_STRING([--with-long-double-128],
4876 [use 128-bit long double by default])],
4877 gcc_cv_target_ldbl128="$with_long_double_128",
4878 [[gcc_cv_target_ldbl128=no
4879 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4880 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4881 && gcc_cv_target_ldbl128=yes
4885 if test x$gcc_cv_target_ldbl128 = xyes; then
4886 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4887 [Define if TFmode long double should be the default])
4890 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4891 gcc_cv_target_dl_iterate_phdr=unknown
4893 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4894 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4895 # libdl there, both complicating its use and breaking compatibility
4896 # between Solaris 10 updates.
4897 *-*-solaris2.1[[1-9]]*)
4898 # <link.h> needs both a dl_iterate_phdr declaration and support for
4899 # compilation with largefile support.
4900 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4901 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4902 gcc_cv_target_dl_iterate_phdr=yes
4904 gcc_cv_target_dl_iterate_phdr=no
4908 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4909 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4910 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4911 [Define if your target C library provides the `dl_iterate_phdr' function.])
4913 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4915 # We no longer support different GC mechanisms. Emit an error if
4916 # the user configures with --with-gc.
4918 [AS_HELP_STRING([--with-gc={page,zone}],
4919 [this option is not supported anymore. It used to choose
4920 the garbage collection mechanism to use with the compiler])],
4921 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
4924 # Libraries to use on the host. This will normally be set by the top
4925 # level Makefile. Here we simply capture the value for our Makefile.
4926 if test -z "${HOST_LIBS+set}"; then
4931 # Use the system's zlib library.
4933 zlibinc="-I\$(srcdir)/../zlib"
4934 AC_ARG_WITH(system-zlib,
4935 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4942 dnl Very limited version of automake's enable-maintainer-mode
4944 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4945 dnl maintainer-mode is disabled by default
4946 AC_ARG_ENABLE(maintainer-mode,
4947 [AS_HELP_STRING([--enable-maintainer-mode],
4948 [enable make rules and dependencies not useful
4949 (and sometimes confusing) to the casual installer])],
4950 maintainer_mode=$enableval,
4953 AC_MSG_RESULT($maintainer_mode)
4955 if test "$maintainer_mode" = "yes"; then
4962 dnl Whether to prevent multiple front-ends from linking at the same time
4964 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
4965 AC_ARG_ENABLE(link-mutex,
4966 [AS_HELP_STRING([--enable-link-mutex],
4967 [avoid linking multiple front-ends at once to avoid thrashing
4968 on the build machine])],
4969 do_link_mutex=$enableval,
4971 AC_MSG_RESULT($do_link_mutex)
4973 if test "$do_link_mutex" = "yes"; then
4978 AC_SUBST(DO_LINK_MUTEX)
4984 # Make empty files to contain the specs and options for each language.
4985 # Then add #include lines to for a compiler that has specs and/or options.
4991 # These (without "all_") are set in each config-lang.in.
4992 # `language' must be a single word so is spelled singularly.
4995 all_outputs='Makefile'
4996 # List of language makefile fragments.
4998 # Additional files for gengtype
4999 all_gtfiles="$target_gtfiles"
5001 # These are the languages that are set in --enable-languages,
5002 # and are available in the GCC tree.
5003 all_selected_languages=
5005 # Add the language fragments.
5006 # Languages are added via two mechanisms. Some information must be
5007 # recorded in makefile variables, these are defined in config-lang.in.
5008 # We accumulate them and plug them into the main Makefile.
5009 # The other mechanism is a set of hooks for each of the main targets
5010 # like `clean', `install', etc.
5012 language_hooks="Make-hooks"
5014 for lang in ${srcdir}/*/config-lang.in
5017 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5019 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5020 if test "x$lang_alias" = x
5022 echo "$lang doesn't set \$language." 1>&2
5025 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5026 subdirs="$subdirs $subdir"
5028 # $gcc_subdir is where the gcc integration files are to be found
5029 # for a language, both for internal compiler purposes (compiler
5030 # sources implementing front-end to GCC tree converters), and for
5031 # build infrastructure purposes (Make-lang.in, etc.)
5033 # This will be <subdir> (relative to $srcdir) if a line like
5034 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5035 # is found in <langdir>/config-lang.in, and will remain <langdir>
5038 # Except for the language alias (fetched above), the regular
5039 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5040 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5041 # only this and the language alias.
5043 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5044 if [ "$gcc_subdir" = "" ]; then
5045 gcc_subdir="$subdir"
5048 case ",$enable_languages," in
5050 all_selected_languages="$all_selected_languages $lang_alias"
5051 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5052 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5064 . ${srcdir}/$gcc_subdir/config-lang.in
5065 if test "x$language" = x
5067 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5072 case ",$enable_languages," in
5075 for i in $subdir_requires; do
5076 test -f "${srcdir}/$i/config-lang.in" && continue
5084 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5085 if test -f $srcdir/$gcc_subdir/lang.opt; then
5086 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5087 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5089 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5090 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5092 all_languages="$all_languages $language"
5093 all_compilers="$all_compilers $compilers"
5094 all_outputs="$all_outputs $outputs"
5095 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5096 case ",$enable_languages," in
5098 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5100 AC_SUBST(enable_lto)
5107 for language in $all_selected_languages
5109 check_languages="$check_languages check-$language"
5112 # We link each language in with a set of hooks, reached indirectly via
5113 # lang.${target}. Only do so for selected languages.
5117 target_list="all.cross start.encap rest.encap tags \
5118 install-common install-man install-info install-pdf install-html dvi \
5119 pdf html uninstall info man srcextra srcman srcinfo \
5120 mostlyclean clean distclean maintainer-clean install-plugin"
5122 for t in $target_list
5125 for lang in $all_selected_languages
5129 echo "lang.$t: $x" >> Make-hooks
5133 # Option include files
5136 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5137 option_includes="option-includes.mk"
5138 AC_SUBST_FILE(option_includes)
5146 echo "dir ." > .gdbinit
5147 echo "dir ${srcdir}" >> .gdbinit
5148 if test x$gdb_needs_out_file_path = xyes
5150 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5152 if test "x$subdirs" != x; then
5155 echo "dir ${srcdir}/$s" >> .gdbinit
5158 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5160 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5161 AC_SUBST(gcc_tooldir)
5164 # Find a directory in which to install a shared libgcc.
5166 AC_ARG_ENABLE(version-specific-runtime-libs,
5167 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5168 [specify that runtime libraries should be
5169 installed in a compiler-specific directory])])
5171 # Substitute configuration variables
5174 AC_SUBST(all_compilers)
5175 AC_SUBST(all_gtfiles)
5176 AC_SUBST(all_lang_makefrags)
5177 AC_SUBST(all_languages)
5178 AC_SUBST(all_selected_languages)
5179 AC_SUBST(build_exeext)
5180 AC_SUBST(build_install_headers_dir)
5181 AC_SUBST(build_xm_file_list)
5182 AC_SUBST(build_xm_include_list)
5183 AC_SUBST(build_xm_defines)
5184 AC_SUBST(build_file_translate)
5185 AC_SUBST(check_languages)
5186 AC_SUBST(cpp_install_dir)
5187 AC_SUBST(xmake_file)
5188 AC_SUBST(tmake_file)
5189 AC_SUBST(TM_ENDIAN_CONFIG)
5190 AC_SUBST(TM_MULTILIB_CONFIG)
5191 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5192 AC_SUBST(extra_gcc_objs)
5193 AC_SUBST(user_headers_inc_next_pre)
5194 AC_SUBST(user_headers_inc_next_post)
5195 AC_SUBST(extra_headers_list)
5196 AC_SUBST(extra_objs)
5197 AC_SUBST(extra_programs)
5198 AC_SUBST(float_h_file)
5199 AC_SUBST(gcc_config_arguments)
5200 AC_SUBST(gcc_gxx_include_dir)
5201 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5202 AC_SUBST(host_exeext)
5203 AC_SUBST(host_xm_file_list)
5204 AC_SUBST(host_xm_include_list)
5205 AC_SUBST(host_xm_defines)
5206 AC_SUBST(out_host_hook_obj)
5208 AC_SUBST(lang_opt_files)
5209 AC_SUBST(lang_specs_files)
5210 AC_SUBST(lang_tree_files)
5211 AC_SUBST(local_prefix)
5213 AC_SUBST(objc_boehm_gc)
5215 AC_SUBST(out_object_file)
5216 AC_SUBST(common_out_file)
5217 AC_SUBST(common_out_object_file)
5218 AC_SUBST(tm_file_list)
5219 AC_SUBST(tm_include_list)
5220 AC_SUBST(tm_defines)
5221 AC_SUBST(tm_p_file_list)
5222 AC_SUBST(tm_p_include_list)
5223 AC_SUBST(xm_file_list)
5224 AC_SUBST(xm_include_list)
5225 AC_SUBST(xm_defines)
5226 AC_SUBST(use_gcc_stdint)
5227 AC_SUBST(c_target_objs)
5228 AC_SUBST(cxx_target_objs)
5229 AC_SUBST(fortran_target_objs)
5230 AC_SUBST(target_cpu_default)
5232 AC_SUBST_FILE(language_hooks)
5235 if test x${build} = x${host} ; then
5236 if test x${host} = x${target} ; then
5237 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5239 echo "Links are now set up to build a cross-compiler" 1>&2
5240 echo " from ${host} to ${target}." 1>&2
5243 if test x${host} = x${target} ; then
5244 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5245 echo " for ${target}." 1>&2
5247 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5248 echo " from ${host} to ${target}." 1>&2
5252 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5253 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5255 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5256 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5258 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5259 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5260 if test "x${CLOOGLIBS}" != "x" ; then
5261 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5264 # Check for plugin support
5265 AC_ARG_ENABLE(plugin,
5266 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5267 enable_plugin=$enableval,
5268 enable_plugin=yes; default_plugin=yes)
5274 if test x$build = x$host; then
5275 export_sym_check="nm${exeext} -g"
5276 elif test x$host = x$target; then
5277 export_sym_check="$gcc_cv_nm -g"
5283 if test x$build = x$host; then
5284 export_sym_check="objdump${exeext} -T"
5285 elif test x$host = x$target; then
5286 export_sym_check="$gcc_cv_objdump -T"
5293 if test x"$enable_plugin" = x"yes"; then
5295 AC_MSG_CHECKING([for exported symbols])
5296 if test "x$export_sym_check" != x; then
5297 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5298 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5299 if $export_sym_check conftest | grep foobar > /dev/null; then
5300 : # No need to use a flag
5301 AC_MSG_RESULT([yes])
5303 AC_MSG_RESULT([yes])
5304 AC_MSG_CHECKING([for -rdynamic])
5305 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5306 if $export_sym_check conftest | grep foobar > /dev/null; then
5308 pluginlibs="-rdynamic"
5313 AC_MSG_RESULT([$plugin_rdynamic])
5316 AC_MSG_RESULT([unable to check])
5321 AC_SEARCH_LIBS([dlopen], [dl])
5322 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5323 pluginlibs="$pluginlibs -ldl"
5327 # Check that we can build shared objects with -fPIC -shared
5328 saved_LDFLAGS="$LDFLAGS"
5329 saved_CFLAGS="$CFLAGS"
5332 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5333 CFLAGS="$CFLAGS -fPIC"
5334 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5337 CFLAGS="$CFLAGS -fPIC"
5338 LDFLAGS="$LDFLAGS -fPIC -shared"
5341 AC_MSG_CHECKING([for -fPIC -shared])
5343 [extern int X;],[return X == 0;],
5344 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5345 [AC_MSG_RESULT([no]); have_pic_shared=no])
5346 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5350 LDFLAGS="$saved_LDFLAGS"
5351 CFLAGS="$saved_CFLAGS"
5353 # If plugin support had been requested but not available, fail.
5354 if test x"$enable_plugin" = x"no" ; then
5355 if test x"$default_plugin" != x"yes"; then
5357 Building GCC with plugin support requires a host that supports
5358 -fPIC, -shared, -ldl and -rdynamic.])
5363 AC_SUBST(pluginlibs)
5364 AC_SUBST(enable_plugin)
5365 if test x"$enable_plugin" = x"yes"; then
5366 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5370 AC_ARG_ENABLE(libquadmath-support,
5371 [AS_HELP_STRING([--disable-libquadmath-support],
5372 [disable libquadmath support for Fortran])],
5373 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5374 ENABLE_LIBQUADMATH_SUPPORT=yes)
5375 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5376 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5377 [Define to 1 to enable libquadmath support])
5381 # Specify what hash style to use by default.
5382 AC_ARG_WITH([linker-hash-style],
5383 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5384 [specify the linker hash style])],
5385 [case x"$withval" in
5387 LINKER_HASH_STYLE=sysv
5390 LINKER_HASH_STYLE=gnu
5393 LINKER_HASH_STYLE=both
5396 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5399 [LINKER_HASH_STYLE=''])
5400 if test x"${LINKER_HASH_STYLE}" != x; then
5401 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5402 [The linker hash style])
5405 # Configure the subdirectories
5406 # AC_CONFIG_SUBDIRS($subdirs)
5408 # Create the Makefile
5409 # and configure language subdirectories
5410 AC_CONFIG_FILES($all_outputs)
5412 AC_CONFIG_COMMANDS([default],
5414 case ${CONFIG_HEADERS} in
5415 *auto-host.h:config.in*)
5418 # Make sure all the subdirs exist.
5419 for d in $subdirs doc build common c-family
5421 test -d $d || mkdir $d
5424 [subdirs='$subdirs'])