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$enable_objc_gc = xno; then
721 case ,${enable_languages}, in
722 *,upc,) lang_upc_enabled="yes" ;;
726 AC_ARG_WITH([upc-pts],
728 [--with-upc-pts={struct,packed}],
729 [choose the representation of a UPC pointer-to-shared]),
731 if test x"$lang_upc_enabled" = x"yes" ; then
733 packed|struct) upc_pts_rep="$withval" ;;
734 *) AC_MSG_ERROR([$withval is an invalid option to --with-upc-pts])
738 AC_MSG_WARN([--with-upc-pts is allowed only when UPC
739 support has been enabled])
743 if test x"$lang_upc_enabled" = x"yes" ; then
749 # Perl is required for checking pts representation
750 AC_CHECK_PROG(PERL, perl, perl)
752 AC_ARG_WITH([upc-pts-vaddr-order],
754 [--with-upc-pts-vaddr-order={last,first}],
755 [choose position of the address field in UPC pointer-to-shared representation]),
757 if test x"$lang_upc_enabled" = x"yes" ; then
758 upc_vaddr_order="$withval"
759 case "$upc_vaddr_order" in
762 [$withval is an invalid option to --with-upc-pts-vaddr-order]) ;;
765 AC_MSG_WARN([--upc-pts-vaddr-order is allowed only when UPC
766 support has been enabled])
770 if test x"$lang_upc_enabled" = x"yes" ; then
771 # Default UPC PTS vaddr order to "first"
772 upc_vaddr_order="first"
776 AC_ARG_WITH([upc-packed-bits],,
778 AC_MSG_WARN([--with-upc-packed-bits is deprecated.
779 Use --with-upc-pts-packed-bits instead.])
780 with_upc_pts_packed_bits="$withval";
784 AC_ARG_WITH([upc-pts-packed-bits],
786 [--with-upc-pts-packed-bits=phase,thread,vaddr],
787 [choose bit distribution in packed UPC pointer-to-shared representation]),
789 if test x"$lang_upc_enabled" = x"yes" ; then
790 if test x"$upc_pts_rep" = x"packed"; then
791 UPC_PTS_PHASE_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
792 print $1 if ($1+$2+$3 == 64) && $1>=1;'`
793 UPC_PTS_THREAD_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
794 print $2 if ($1+$2+$3 == 64) && $2>=1;'`
795 UPC_PTS_VADDR_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
796 print $3 if ($1+$2+$3 == 64) && $3>=20;'`
797 if test -z "$UPC_PTS_PHASE_SIZE" \
798 || test -z "$UPC_PTS_THREAD_SIZE" \
799 || test -z "$UPC_PTS_VADDR_SIZE" ; then
800 AC_MSG_ERROR([--with-upc-pts-packed-bits=phase,thread,vaddr requires
801 phase+thread+vaddr=64 and phase >= 1 and thread >= 1 and vaddr >= 20])
804 AC_MSG_ERROR([--with-upc-pts-packed-bits is only supported for
805 the packed UPC pointer-to-shared representation])
808 AC_MSG_WARN([--with-upc-pts-packed-bits is allowed only when UPC
809 support has been enabled])
813 if test x"$lang_upc_enabled" = x"yes" ; then
814 # GNU UPC packed pointer representation defaults.
817 UPC_PTS_PHASE_SIZE=20
818 UPC_PTS_THREAD_SIZE=12
819 UPC_PTS_VADDR_SIZE=32
822 UPC_PTS_PHASE_SIZE=20
823 UPC_PTS_THREAD_SIZE=10
824 UPC_PTS_VADDR_SIZE=34
829 AC_ARG_ENABLE(upc-link-script,
831 [--enable-upc-link-script],
832 [enable UPC's use of a custom linker script;
833 this will define the UPC shared section as a no load section on
834 targets where this feature is supported (requires GNU LD)]),
836 if test x"$lang_upc_enabled" = x"yes" ; then
840 AC_MSG_ERROR([--enable-upc-link-script accepts only yes or no.])
843 AC_MSG_WARN([--enable-upc-link-script is allowed only when UPC
844 support has been enabled])
848 if test x"$lang_upc_enabled" = x"yes" ; then
849 enable_upc_link_script=no
853 if test x"$lang_upc_enabled" = x"yes" ; then
854 AC_MSG_CHECKING([for UPC pointer-to-shared representation])
855 AC_MSG_RESULT([$upc_pts_rep])
856 case "$upc_pts_rep" in
858 AC_DEFINE(HAVE_UPC_PTS_PACKED_REP,[1],
859 [Define to 1 if UPC pointer-to-shared representation
860 is a packed 64 bit word.])
863 AC_DEFINE(HAVE_UPC_PTS_STRUCT_REP,[1],
864 [Define to 1 if UPC pointer-to-shared representation
868 AC_MSG_CHECKING([for UPC pointer-to-shared address field position])
869 AC_MSG_RESULT([$upc_vaddr_order])
870 if test x"$upc_vaddr_order" = x"first"; then
871 AC_DEFINE(HAVE_UPC_PTS_VADDR_FIRST,[1],
872 [Define to 1 if the 'vaddr' field is the first field
873 in the UPC pointer-to-shared representation.])
875 if test x"$upc_pts_rep" = x"packed"; then
876 AC_DEFINE_UNQUOTED(UPC_PTS_PHASE_SIZE,$UPC_PTS_PHASE_SIZE,
877 [For packed UPC pointers-to-shared,
878 the size of the phase field (in bits).])
879 AC_DEFINE_UNQUOTED(UPC_PTS_THREAD_SIZE,$UPC_PTS_THREAD_SIZE,
880 [For packed UPC pointers-to-shared,
881 the size of the thread field (in bits).])
882 AC_DEFINE_UNQUOTED(UPC_PTS_VADDR_SIZE,$UPC_PTS_VADDR_SIZE,
883 [For packed UPC pointers-to-shared,
884 the size of the address field (in bits).])
885 AC_MSG_CHECKING([for packed UPC pointer-to-shared layout])
887 ["phase=${UPC_PTS_PHASE_SIZE},thread=${UPC_PTS_THREAD_SIZE},
888 vaddr=${UPC_PTS_VADDR_SIZE}"])
890 AC_MSG_CHECKING([for UPC link script support])
891 AC_MSG_RESULT($enable_upc_link_script)
892 if test "$enable_upc_link_script" = yes; then
893 AC_DEFINE(HAVE_UPC_LINK_SCRIPT, 1, [Define to 1 if UPC link script is supported.])
898 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
899 dwarf2="$with_dwarf2",
902 AC_ARG_ENABLE(shared,
903 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
905 case $enable_shared in
909 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
910 for pkg in $enableval; do
911 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
918 ], [enable_shared=yes])
919 AC_SUBST(enable_shared)
921 AC_ARG_WITH([native-system-header-dir],
922 [ --with-native-system-header-dir=dir
923 use dir as the directory to look for standard
924 system header files in. Defaults to /usr/include.],
926 case ${with_native_system_header_dir} in
927 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
928 /* | [[A-Za-z]]:[[\\/]]*) ;;
929 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
931 configured_native_system_header_dir="${withval}"
932 ], [configured_native_system_header_dir=])
934 AC_ARG_WITH(build-sysroot,
935 [AS_HELP_STRING([--with-build-sysroot=sysroot],
936 [use sysroot as the system root during the build])],
937 [if test x"$withval" != x ; then
938 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
940 [SYSROOT_CFLAGS_FOR_TARGET=])
941 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
943 if test "x$prefix" = xNONE; then
944 test_prefix=/usr/local
948 if test "x$exec_prefix" = xNONE; then
949 test_exec_prefix=$test_prefix
951 test_exec_prefix=$exec_prefix
955 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
956 [search for usr/lib, usr/include, et al, within DIR])],
958 case ${with_sysroot} in
959 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
960 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
963 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
964 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
966 case ${TARGET_SYSTEM_ROOT} in
967 "${test_prefix}"|"${test_prefix}/"*|\
968 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
969 '${prefix}'|'${prefix}/'*|\
970 '${exec_prefix}'|'${exec_prefix}/'*)
971 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
972 TARGET_SYSTEM_ROOT_DEFINE="$t"
977 TARGET_SYSTEM_ROOT_DEFINE=
978 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
980 AC_SUBST(TARGET_SYSTEM_ROOT)
981 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
982 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
985 [AS_HELP_STRING([--with-specs=SPECS],
986 [add SPECS to driver command-line processing])],
987 [CONFIGURE_SPECS=$withval],
990 AC_SUBST(CONFIGURE_SPECS)
992 ACX_PKGVERSION([GCC])
993 ACX_BUGURL([http://gccupc.org/bugs])
995 # Sanity check enable_languages in case someone does not run the toplevel
996 # configure # script.
997 AC_ARG_ENABLE(languages,
998 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
999 [case ,${enable_languages}, in
1001 # go safe -- we cannot be much sure without the toplevel
1003 # analysis of which target libs are present and usable
1007 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1012 enable_languages=c,${enable_languages}
1015 [enable_languages=c])
1017 AC_ARG_WITH(multilib-list,
1018 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
1020 with_multilib_list=default)
1022 # -------------------------
1023 # Checks for other programs
1024 # -------------------------
1028 # Find some useful tools
1030 # We need awk to create options.c and options.h.
1031 # Bail out if it's missing.
1033 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1040 AC_SUBST(ranlib_flags)
1044 # See if cmp has --ignore-initial.
1045 gcc_AC_PROG_CMP_IGNORE_INITIAL
1047 # See if we have the mktemp command.
1048 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1050 # See if makeinfo has been installed and is modern enough
1051 # that we can use it.
1052 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1053 [GNU texinfo.* \([0-9][0-9.]*\)],
1054 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1055 if test $gcc_cv_prog_makeinfo_modern = no; then
1057 *** Makeinfo is missing or too old.
1058 *** Info documentation will not be built.])
1063 AC_SUBST(BUILD_INFO)
1065 # Is pod2man recent enough to regenerate manpages?
1066 AC_MSG_CHECKING([for recent Pod::Man])
1067 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1069 GENERATED_MANPAGES=generated-manpages
1074 AC_SUBST(GENERATED_MANPAGES)
1076 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1079 dnl Don't use AC_PROG_LEX; we insist on flex.
1080 dnl LEXLIB is not useful in gcc.
1081 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1084 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1086 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1087 # check for build == host before using them.
1090 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1091 && test -d ../binutils ; then
1092 NM='${objdir}/../binutils/nm-new'
1094 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1098 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1099 && test -d ../binutils ; then
1100 AR='${objdir}/../binutils/ar'
1102 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1106 # --------------------
1107 # Checks for C headers
1108 # --------------------
1110 # Need to reject headers which give warnings, so that the -Werror bootstrap
1111 # works later. *sigh* This needs to come before all header checks.
1118 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1119 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
1120 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1121 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
1123 # Check for thread headers.
1124 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1125 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1127 # These tests can't be done till we know if we have limits.h.
1131 # ----------------------
1132 # Checks for C++ headers
1133 # ----------------------
1135 dnl Autoconf will give an error in the configure script if there is no
1136 dnl C++ preprocessor. Hack to prevent that.
1137 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1139 m4_popdef([AC_MSG_ERROR])[]dnl
1143 AC_CHECK_HEADERS(unordered_map)
1144 AC_CHECK_HEADERS(tr1/unordered_map)
1145 AC_CHECK_HEADERS(ext/hash_map)
1154 # These libraries may be used by collect2.
1155 # We may need a special search path to get them linked.
1156 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1158 for libs in '' -lld -lmld \
1159 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1160 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1163 AC_TRY_LINK_FUNC(ldopen,
1164 [gcc_cv_collect2_libs="$libs"; break])
1167 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1168 case $gcc_cv_collect2_libs in
1170 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1172 AC_SUBST(COLLECT2_LIBS)
1174 # When building Ada code on Alpha, we need exc_resume which is usually in
1175 # -lexc. So test for it.
1178 AC_SEARCH_LIBS(exc_resume, exc)
1181 AC_SUBST(GNAT_LIBEXC)
1183 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1186 AC_SEARCH_LIBS(kstat_open, kstat)
1187 EXTRA_GCC_LIBS="$LIBS"
1189 AC_SUBST(EXTRA_GCC_LIBS)
1191 # Some systems put ldexp and frexp in libm instead of libc; assume
1192 # they're both in the same place. jcf-dump needs them.
1195 AC_SEARCH_LIBS(ldexp, m)
1200 # Use <inttypes.h> only if it exists,
1201 # doesn't clash with <sys/types.h>, and declares intmax_t.
1202 AC_MSG_CHECKING(for inttypes.h)
1203 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1204 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1205 [[#include <sys/types.h>
1206 #include <inttypes.h>]],
1207 [[intmax_t i = -1;]])],
1208 [gcc_cv_header_inttypes_h=yes],
1209 [gcc_cv_header_inttypes_h=no])])
1210 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1211 if test $gcc_cv_header_inttypes_h = yes; then
1212 AC_DEFINE(HAVE_INTTYPES_H, 1,
1213 [Define if you have a working <inttypes.h> header file.])
1216 dnl Disabled until we have a complete test for buggy enum bitfields.
1217 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1219 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1220 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1221 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1222 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1223 putchar_unlocked putc_unlocked)
1224 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1225 sysconf strsignal getrusage nl_langinfo \
1226 gettimeofday mbstowcs wcswidth mmap setlocale \
1227 gcc_UNLOCKED_FUNCS madvise)
1229 if test x$ac_cv_func_mbstowcs = xyes; then
1230 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1231 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1237 [gcc_cv_func_mbstowcs_works=yes],
1238 [gcc_cv_func_mbstowcs_works=no],
1239 [gcc_cv_func_mbstowcs_works=yes])])
1240 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1241 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1242 [Define this macro if mbstowcs does not crash when its
1243 first argument is NULL.])
1247 AC_CHECK_TYPE(ssize_t, int)
1248 AC_CHECK_TYPE(caddr_t, char *)
1250 GCC_AC_FUNC_MMAP_BLACKLIST
1254 # Under VMS, vfork works very differently than on Unix. The standard test
1255 # won't work, and it isn't easily adaptable. It makes more sense to
1257 ac_cv_func_vfork_works=yes
1262 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1263 # iconv() prototype.
1268 # Until we have in-tree GNU iconv:
1270 AC_SUBST(LIBICONV_DEP)
1276 # We will need to find libiberty.h and ansidecl.h
1277 saved_CFLAGS="$CFLAGS"
1278 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1279 saved_CXXFLAGS="$CXXFLAGS"
1280 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1281 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1282 strsignal strstr stpcpy strverscmp \
1283 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1284 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1285 #include "ansidecl.h"
1286 #include "system.h"])
1288 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1289 #include "ansidecl.h"
1291 #ifdef HAVE_SYS_RESOURCE_H
1292 #include <sys/resource.h>
1296 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1297 #include "ansidecl.h"
1299 #ifdef HAVE_SYS_RESOURCE_H
1300 #include <sys/resource.h>
1302 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1303 [Define to `long' if <sys/resource.h> doesn't define.])])
1305 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1306 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1307 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1308 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1309 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1310 #include "ansidecl.h"
1319 gcc_AC_CHECK_DECLS(times, , ,[
1320 #include "ansidecl.h"
1322 #ifdef HAVE_SYS_TIMES_H
1323 #include <sys/times.h>
1327 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1328 #include "ansidecl.h"
1333 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1336 gcc_AC_CHECK_DECLS(madvise, , ,[
1337 #include "ansidecl.h"
1342 # More time-related stuff.
1343 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1344 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1345 #include "ansidecl.h"
1347 #ifdef HAVE_SYS_TIMES_H
1348 #include <sys/times.h>
1350 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1351 if test $ac_cv_struct_tms = yes; then
1352 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1353 [Define if <sys/times.h> defines struct tms.])
1356 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1357 # revisit after autoconf 2.50.
1358 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1359 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1360 #include "ansidecl.h"
1362 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1363 if test $gcc_cv_type_clock_t = yes; then
1364 AC_DEFINE(HAVE_CLOCK_T, 1,
1365 [Define if <time.h> defines clock_t.])
1368 # Check if F_SETLKW is supported by fcntl.
1369 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1370 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1371 #include <fcntl.h>]], [[
1377 return fcntl (1, F_SETLKW, &fl);]])],
1378 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1379 if test $ac_cv_f_setlkw = yes; then
1380 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1381 [Define if F_SETLKW supported by fcntl.])
1384 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1385 CFLAGS="$saved_CFLAGS"
1386 CXXFLAGS="$saved_CXXFLAGS"
1388 # mkdir takes a single argument on some systems.
1389 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1397 # With Setjmp/Longjmp based exception handling.
1398 AC_ARG_ENABLE(sjlj-exceptions,
1399 [AS_HELP_STRING([--enable-sjlj-exceptions],
1400 [arrange to use setjmp/longjmp exception handling])],
1403 if test $enableval != yes; then
1404 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1409 force_sjlj_exceptions=yes],
1412 force_sjlj_exceptions=yes
1416 force_sjlj_exceptions=no
1419 if test $force_sjlj_exceptions = yes; then
1420 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1421 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1422 [Define 0/1 to force the choice for exception handling model.])
1425 # --------------------------------------------------------
1426 # Build, host, and target specific configuration fragments
1427 # --------------------------------------------------------
1429 # Collect build-machine-specific information.
1430 . ${srcdir}/config.build
1432 # Collect host-machine-specific information.
1433 . ${srcdir}/config.host
1437 # Collect target-machine-specific information.
1438 . ${srcdir}/config.gcc
1440 extra_objs="${host_extra_objs} ${extra_objs}"
1441 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1443 # Default the target-machine variables that were not explicitly set.
1444 if test x"$tm_file" = x
1445 then tm_file=$cpu_type/$cpu_type.h; fi
1447 if test x"$extra_headers" = x
1448 then extra_headers=; fi
1450 if test x$md_file = x
1451 then md_file=$cpu_type/$cpu_type.md; fi
1453 if test x$out_file = x
1454 then out_file=$cpu_type/$cpu_type.c; fi
1456 if test x"$tmake_file" = x
1457 then tmake_file=$cpu_type/t-$cpu_type
1460 # Support --enable-initfini-array.
1461 if test x$enable_initfini_array != xno; then
1462 tm_file="${tm_file} initfini-array.h"
1465 if test x"$dwarf2" = xyes
1466 then tm_file="$tm_file tm-dwarf2.h"
1469 # Say what files are being used for the output code and MD file.
1470 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1471 echo "Using \`$srcdir/config/$md_file' as machine description file."
1473 # If any of the xm_file variables contain nonexistent files, warn
1474 # about them and drop them.
1477 for x in $build_xm_file; do
1478 if test -f $srcdir/config/$x
1480 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1486 for x in $host_xm_file; do
1487 if test -f $srcdir/config/$x
1489 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1495 for x in $xm_file; do
1496 if test -f $srcdir/config/$x
1498 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1504 for f in $tm_file; do
1507 if test $count = ax; then
1508 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1510 echo "Using the following target machine macro files:"
1511 for f in $tm_file; do
1512 echo " $srcdir/config/$f"
1516 if test x$need_64bit_hwint = xyes; then
1517 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1518 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1521 if test x$use_long_long_for_widest_fast_int = xyes; then
1522 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1523 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1524 efficiently supported by the host hardware.])
1527 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1528 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1530 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1531 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1534 for f in $host_xm_file; do
1537 if test $count = a; then
1539 elif test $count = ax; then
1540 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1542 echo "Using the following host machine macro files:"
1543 for f in $host_xm_file; do
1544 echo " $srcdir/config/$f"
1547 echo "Using ${out_host_hook_obj} for host machine hooks."
1549 if test "$host_xm_file" != "$build_xm_file"; then
1551 for f in $build_xm_file; do
1554 if test $count = a; then
1556 elif test $count = ax; then
1557 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1559 echo "Using the following build machine macro files:"
1560 for f in $build_xm_file; do
1561 echo " $srcdir/config/$f"
1566 if test -n "$configured_native_system_header_dir"; then
1567 native_system_header_dir=$configured_native_system_header_dir
1569 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1570 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1574 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1575 gcc_cv_mcontext_underscores,
1577 #include <sys/cdefs.h>
1578 #include <sys/signal.h>
1579 #include <ucontext.h>
1580 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1582 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1583 if test $gcc_cv_mcontext_underscores = yes; then
1584 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1585 [mcontext_t fields start with __])
1594 # Check if a valid thread package
1595 case ${enable_threads} in
1598 target_thread_file='single'
1602 target_thread_file='single'
1604 aix | dce | lynx | mipssde | posix | rtems | \
1605 single | tpf | vxworks | win32)
1606 target_thread_file=${enable_threads}
1609 echo "${enable_threads} is an unknown thread package" 1>&2
1614 if test x${thread_file} = x; then
1615 # No thread file set by target-specific clauses in config.gcc,
1616 # so use file chosen by default logic above
1617 thread_file=${target_thread_file}
1625 if test x$enable___cxa_atexit = xyes || \
1626 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1627 if test x$host = x$target; then
1629 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1630 # keyed to flag_use_cxa_atexit
1635 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1636 [echo "__cxa_atexit can't be enabled on this target"])
1640 # We can't check for __cxa_atexit when building a cross, so assume
1644 if test x$use_cxa_atexit = xyes; then
1645 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1646 [Define if you want to use __cxa_atexit, rather than atexit, to
1647 register C++ destructors for local statics and global objects.
1648 This is essential for fully standards-compliant handling of
1649 destructors, but requires __cxa_atexit in libc.])
1653 # Look for a file containing extra machine modes.
1654 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1655 extra_modes_file='$(srcdir)'/config/${extra_modes}
1656 AC_SUBST(extra_modes_file)
1657 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1658 [Define to the name of a file containing a list of extra machine modes
1659 for this architecture.])
1662 # Convert extra_options into a form suitable for Makefile use.
1665 for f in $extra_options; do
1666 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1667 all_opt_files="$all_opt_files $srcdir/config/$f"
1669 AC_SUBST(extra_opt_files)
1671 # auto-host.h is the file containing items generated by autoconf and is
1672 # the first file included by config.h.
1673 # If host=build, it is correct to have bconfig include auto-host.h
1674 # as well. If host!=build, we are in error and need to do more
1675 # work to find out the build config parameters.
1676 if test x$host = x$build
1678 build_auto=auto-host.h
1680 # We create a subdir, then run autoconf in the subdir.
1681 # To prevent recursion we set host and build for the new
1682 # invocation of configure to the build for this invocation
1689 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1690 *) realsrcdir=../${srcdir};;
1692 saved_CFLAGS="${CFLAGS}"
1693 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1694 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1695 ${realsrcdir}/configure \
1696 --enable-languages=${enable_languages-all} \
1697 --target=$target_alias --host=$build_alias --build=$build_alias
1698 CFLAGS="${saved_CFLAGS}"
1700 # We just finished tests for the build machine, so rename
1701 # the file auto-build.h in the gcc directory.
1702 mv auto-host.h ../auto-build.h
1705 build_auto=auto-build.h
1707 AC_SUBST(build_subdir)
1709 tm_file="${tm_file} defaults.h"
1710 tm_p_file="${tm_p_file} tm-preds.h"
1711 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1712 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1713 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1714 # put this back in temporarily.
1715 xm_file="auto-host.h ansidecl.h ${xm_file}"
1722 # Compile in configure arguments.
1723 if test -f configargs.h ; then
1724 # Being re-configured.
1725 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1726 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1728 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1731 # Double all backslashes and backslash all quotes to turn
1732 # gcc_config_arguments into a C string.
1733 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1734 $gcc_config_arguments
1736 gcc_config_arguments_str=`cat conftest.out`
1739 cat > configargs.h <<EOF
1740 /* Generated automatically. */
1741 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1742 static const char thread_model[] = "$thread_file";
1744 static const struct {
1745 const char *name, *value;
1746 } configure_default_options[] = $configure_default_options;
1751 gcc_BASEVER=`cat $srcdir/BASE-VER`
1752 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1753 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1754 if test -f $srcdir/REVISION ; then
1755 gcc_REVISION=`cat $srcdir/REVISION`
1759 cat > plugin-version.h <<EOF
1760 #include "configargs.h"
1762 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1763 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1764 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1765 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1767 static char basever[] = "$gcc_BASEVER";
1768 static char datestamp[] = "$gcc_DATESTAMP";
1769 static char devphase[] = "$gcc_DEVPHASE";
1770 static char revision[] = "$gcc_REVISION";
1772 /* FIXME plugins: We should make the version information more precise.
1773 One way to do is to add a checksum. */
1775 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1777 configuration_arguments};
1781 # Internationalization
1782 ZW_GNU_GETTEXT_SISTER_DIR
1784 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1785 # -liconv on the link line twice.
1786 case "$LIBINTL" in *$LIBICONV*)
1790 AC_ARG_ENABLE(secureplt,
1791 [AS_HELP_STRING([--enable-secureplt],
1792 [enable -msecure-plt by default for PowerPC])],
1795 AC_ARG_ENABLE(leading-mingw64-underscores,
1796 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1797 [enable leading underscores on 64 bit mingw targets]),
1799 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1800 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1801 [Define if we should use leading underscore on 64 bit mingw targets])])
1804 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1807 AC_ARG_ENABLE(frame-pointer,
1808 [AS_HELP_STRING([--enable-frame-pointer],
1809 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1812 linux* | darwin[[8912]]*)
1813 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1815 enable_frame_pointer=no
1818 enable_frame_pointer=yes
1823 # Windows32 Registry support for specifying GCC installation paths.
1824 AC_ARG_ENABLE(win32-registry,
1825 [AS_HELP_STRING([--disable-win32-registry],
1826 [disable lookup of installation paths in the
1827 Registry on Windows hosts])
1828 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1829 AS_HELP_STRING([--enable-win32-registry=KEY],
1830 [use KEY instead of GCC version as the last portion
1831 of the registry key])],,)
1834 win32 | pe | cygwin* | mingw32* | uwin*)
1835 if test "x$enable_win32_registry" != xno; then
1836 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1839 if test "x$enable_win32_registry" != xno; then
1840 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1841 [Define to 1 if installation paths should be looked up in the Windows
1842 Registry. Ignored on non-Windows hosts.])
1844 if test "x$enable_win32_registry" != xyes \
1845 && test "x$enable_win32_registry" != x; then
1846 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1847 [Define to be the last component of the Windows registry key under which
1848 to look for installation paths. The full key used will be
1849 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1850 The default is the GCC version number.])
1856 # Get an absolute path to the GCC top-level source directory
1857 holddir=`${PWDCMD-pwd}`
1859 topdir=`${PWDCMD-pwd}`
1862 # Conditionalize the makefile for this host machine.
1864 for f in ${host_xmake_file}
1866 if test -f ${srcdir}/config/$f
1868 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1872 # Conditionalize the makefile for this target machine.
1874 for f in ${tmake_file}
1876 if test -f ${srcdir}/config/$f
1878 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1881 tmake_file="${tmake_file_}"
1883 out_object_file=`basename $out_file .c`.o
1884 common_out_object_file=`basename $common_out_file .c`.o
1886 tm_file_list="options.h"
1887 tm_include_list="options.h insn-constants.h"
1888 for f in $tm_file; do
1891 f=`echo $f | sed 's/^..//'`
1892 tm_file_list="${tm_file_list} $f"
1893 tm_include_list="${tm_include_list} $f"
1896 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1897 tm_include_list="${tm_include_list} $f"
1900 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1901 tm_include_list="${tm_include_list} config/$f"
1908 for f in $tm_p_file; do
1911 tm_p_file_list="${tm_p_file_list} $f"
1912 tm_p_include_list="${tm_p_include_list} $f"
1915 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1916 tm_p_include_list="${tm_p_include_list} config/$f"
1922 for f in $xm_file; do
1925 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1926 xm_include_list="${xm_include_list} $f"
1929 xm_file_list="${xm_file_list} $f"
1930 xm_include_list="${xm_include_list} $f"
1933 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1934 xm_include_list="${xm_include_list} config/$f"
1940 host_xm_include_list=
1941 for f in $host_xm_file; do
1944 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1945 host_xm_include_list="${host_xm_include_list} $f"
1948 host_xm_file_list="${host_xm_file_list} $f"
1949 host_xm_include_list="${host_xm_include_list} $f"
1952 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1953 host_xm_include_list="${host_xm_include_list} config/$f"
1959 for f in $build_xm_file; do
1962 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1963 build_xm_include_list="${build_xm_include_list} $f"
1965 auto-build.h | auto-host.h )
1966 build_xm_file_list="${build_xm_file_list} $f"
1967 build_xm_include_list="${build_xm_include_list} $f"
1970 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1971 build_xm_include_list="${build_xm_include_list} config/$f"
1976 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1977 # cross-compiler which does not use the native headers and libraries.
1978 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1979 CROSS= AC_SUBST(CROSS)
1980 ALL=all.internal AC_SUBST(ALL)
1981 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1983 if test "x$with_build_sysroot" != x; then
1984 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1986 # This value is used, even on a native system, because
1987 # CROSS_SYSTEM_HEADER_DIR is just
1988 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1989 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1992 if test x$host != x$target
1994 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1996 SYSTEM_HEADER_DIR=$build_system_header_dir
1997 case "$host","$target" in
1998 # Darwin crosses can use the host system's libraries and headers,
1999 # because of the fat library support. Of course, it must be the
2000 # same version of Darwin on both sides. Allow the user to
2001 # just say --target=foo-darwin without a version number to mean
2002 # "the version on this system".
2003 *-*-darwin*,*-*-darwin*)
2004 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2005 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2006 if test $hostos = $targetos -o $targetos = darwin ; then
2008 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2013 i?86-*-*,x86_64-*-* \
2014 | powerpc*-*-*,powerpc64*-*-*)
2015 CROSS="$CROSS -DNATIVE_CROSS" ;;
2020 if test "x$with_headers" = x; then
2027 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2028 SYSTEM_HEADER_DIR=$build_system_header_dir
2031 # If this is a cross-compiler that does not
2032 # have its own set of headers then define
2035 # If this is using newlib, without having the headers available now,
2036 # then define inhibit_libc in LIBGCC2_CFLAGS.
2037 # This prevents libgcc2 from containing any code which requires libc
2039 : ${inhibit_libc=false}
2040 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2041 test x$with_newlib = xyes ; } &&
2042 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
2045 AC_SUBST(inhibit_libc)
2047 # When building gcc with a cross-compiler, we need to adjust things so
2048 # that the generator programs are still built with the native compiler.
2049 # Also, we cannot run fixincludes.
2051 # These are the normal (build=host) settings:
2052 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2053 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2054 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2055 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2056 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2057 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2059 # And these apply if build != host, or we are generating coverage data
2060 if test x$build != x$host || test "x$coverage_flags" != x
2062 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2063 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2066 # Expand extra_headers to include complete path.
2067 # This substitutes for lots of t-* files.
2069 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2070 for file in ${extra_headers} ; do
2071 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2074 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2075 if test x"$use_gcc_tgmath" = xyes
2076 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2079 # Define collect2 in Makefile.
2080 case $host_can_use_collect2 in
2082 *) collect2='collect2$(exeext)' ;;
2084 AC_SUBST([collect2])
2086 # Add a definition of USE_COLLECT2 if system wants one.
2087 case $use_collect2 in
2088 no) use_collect2= ;;
2091 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2092 xm_defines="${xm_defines} USE_COLLECT2"
2093 case $host_can_use_collect2 in
2095 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2101 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2102 [Define to the name of the LTO plugin DSO that must be
2103 passed to the linker's -plugin=LIB option.])
2105 # ---------------------------
2106 # Assembler & linker features
2107 # ---------------------------
2109 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2110 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2111 # However when ld-new is first executed from the build tree, libtool will
2112 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2113 # to the build tree. While doing this we need to use the previous-stage
2114 # linker, or we have an infinite loop. The presence of a shell script as
2115 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2116 # the gcc/collect-ld script. So we need to know how libtool works, or
2117 # exec-tool will fail.
2119 m4_defun([_LT_CONFIG_COMMANDS], [])
2122 AC_SUBST(enable_fast_install)
2124 # Identify the assembler which will work hand-in-glove with the newly
2125 # built GCC, so that we can examine its features. This is the assembler
2126 # which will be driven by the driver program.
2128 # If build != host, and we aren't building gas in-tree, we identify a
2129 # build->target assembler and hope that it will have the same features
2130 # as the host->target assembler we'll be using.
2131 gcc_cv_gas_major_version=
2132 gcc_cv_gas_minor_version=
2133 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2135 m4_pattern_allow([AS_FOR_TARGET])dnl
2136 AS_VAR_SET_IF(gcc_cv_as,, [
2137 if test -x "$DEFAULT_ASSEMBLER"; then
2138 gcc_cv_as="$DEFAULT_ASSEMBLER"
2139 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2140 && test -f ../gas/Makefile \
2141 && test x$build = x$host; then
2142 gcc_cv_as=../gas/as-new$build_exeext
2143 elif test -x as$build_exeext; then
2144 # Build using assembler in the current directory.
2145 gcc_cv_as=./as$build_exeext
2146 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2147 gcc_cv_as="$AS_FOR_TARGET"
2149 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2152 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2153 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2154 case "$ORIGINAL_AS_FOR_TARGET" in
2155 ./as | ./as$build_exeext) ;;
2156 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2159 AC_MSG_CHECKING(what assembler to use)
2160 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2161 # Single tree build which includes gas. We want to prefer it
2162 # over whatever linker top-level may have detected, since
2163 # we'll use what we're building after installation anyway.
2164 AC_MSG_RESULT(newly built gas)
2166 _gcc_COMPUTE_GAS_VERSION
2167 in_tree_gas_is_elf=no
2168 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2169 || (grep 'obj_format = multi' ../gas/Makefile \
2170 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2172 in_tree_gas_is_elf=yes
2175 AC_MSG_RESULT($gcc_cv_as)
2179 # Identify the linker which will work hand-in-glove with the newly
2180 # built GCC, so that we can examine its features. This is the linker
2181 # which will be driven by the driver program.
2183 # If build != host, and we aren't building gas in-tree, we identify a
2184 # build->target linker and hope that it will have the same features
2185 # as the host->target linker we'll be using.
2186 gcc_cv_gld_major_version=
2187 gcc_cv_gld_minor_version=
2188 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2189 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2191 AS_VAR_SET_IF(gcc_cv_ld,, [
2192 if test -x "$DEFAULT_LINKER"; then
2193 gcc_cv_ld="$DEFAULT_LINKER"
2194 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2195 && test -f ../ld/Makefile \
2196 && test x$build = x$host; then
2197 gcc_cv_ld=../ld/ld-new$build_exeext
2198 elif test -x collect-ld$build_exeext; then
2199 # Build using linker in the current directory.
2200 gcc_cv_ld=./collect-ld$build_exeext
2201 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2202 gcc_cv_ld="$LD_FOR_TARGET"
2204 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2207 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2208 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2209 # if the PLUGIN_LD is set ld-new, just have it as ld
2210 # as that is the installed named.
2211 if test x$PLUGIN_LD_SUFFIX = xld-new \
2212 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2215 AC_ARG_WITH(plugin-ld,
2216 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2217 [if test x"$withval" != x; then
2218 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2219 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2221 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2222 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2224 # Check to see if we are using gold instead of ld
2225 AC_MSG_CHECKING(whether we are using gold)
2227 if test x$gcc_cv_ld != x; then
2228 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2229 | grep "GNU gold" > /dev/null; then
2233 AC_MSG_RESULT($ld_is_gold)
2235 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2236 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2237 case "$ORIGINAL_LD_FOR_TARGET" in
2238 ./collect-ld | ./collect-ld$build_exeext) ;;
2239 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2242 AC_MSG_CHECKING(what linker to use)
2243 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2244 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2245 # Single tree build which includes ld. We want to prefer it
2246 # over whatever linker top-level may have detected, since
2247 # we'll use what we're building after installation anyway.
2248 AC_MSG_RESULT(newly built ld)
2250 in_tree_ld_is_elf=no
2251 if (grep 'EMUL = .*elf' ../ld/Makefile \
2252 || grep 'EMUL = .*linux' ../ld/Makefile \
2253 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2254 in_tree_ld_is_elf=yes
2255 elif test "$ld_is_gold" = yes; then
2256 in_tree_ld_is_elf=yes
2258 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
2261 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2262 if test x$gcc_cv_gld_version != x; then
2266 case $gcc_cv_gld_version in
2269 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2272 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2273 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2276 AC_MSG_RESULT($gcc_cv_ld)
2280 # Figure out what nm we will be using.
2281 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2282 AS_VAR_SET_IF(gcc_cv_nm,, [
2283 if test -f $gcc_cv_binutils_srcdir/configure.in \
2284 && test -f ../binutils/Makefile \
2285 && test x$build = x$host; then
2286 gcc_cv_nm=../binutils/nm-new$build_exeext
2287 elif test -x nm$build_exeext; then
2288 gcc_cv_nm=./nm$build_exeext
2289 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2290 gcc_cv_nm="$NM_FOR_TARGET"
2292 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2295 AC_MSG_CHECKING(what nm to use)
2296 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2297 # Single tree build which includes binutils.
2298 AC_MSG_RESULT(newly built nm)
2301 AC_MSG_RESULT($gcc_cv_nm)
2305 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2306 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2307 case "$ORIGINAL_NM_FOR_TARGET" in
2308 ./nm | ./nm$build_exeext) ;;
2309 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2313 # Figure out what objdump we will be using.
2314 AS_VAR_SET_IF(gcc_cv_objdump,, [
2315 if test -f $gcc_cv_binutils_srcdir/configure.in \
2316 && test -f ../binutils/Makefile \
2317 && test x$build = x$host; then
2318 # Single tree build which includes binutils.
2319 gcc_cv_objdump=../binutils/objdump$build_exeext
2320 elif test -x objdump$build_exeext; then
2321 gcc_cv_objdump=./objdump$build_exeext
2322 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2323 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2325 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2328 AC_MSG_CHECKING(what objdump to use)
2329 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2330 # Single tree build which includes binutils.
2331 AC_MSG_RESULT(newly built objdump)
2332 elif test x$gcc_cv_objdump = x; then
2333 AC_MSG_RESULT(not found)
2335 AC_MSG_RESULT($gcc_cv_objdump)
2338 # Figure out what readelf we will be using.
2339 AS_VAR_SET_IF(gcc_cv_readelf,, [
2340 if test -f $gcc_cv_binutils_srcdir/configure.in \
2341 && test -f ../binutils/Makefile \
2342 && test x$build = x$host; then
2343 # Single tree build which includes binutils.
2344 gcc_cv_readelf=../binutils/readelf$build_exeext
2345 elif test -x readelf$build_exeext; then
2346 gcc_cv_readelf=./readelf$build_exeext
2348 AC_PATH_PROG(gcc_cv_readelf, readelf)
2351 AC_MSG_CHECKING(what readelf to use)
2352 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2353 # Single tree build which includes binutils.
2354 AC_MSG_RESULT(newly built readelf)
2355 elif test x$gcc_cv_readelf = x; then
2356 AC_MSG_RESULT(not found)
2358 AC_MSG_RESULT($gcc_cv_readelf)
2361 # Figure out what assembler alignment features are present.
2362 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2366 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2367 [Define if your assembler supports .balign and .p2align.])])
2369 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2372 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2373 [Define if your assembler supports specifying the maximum number
2374 of bytes to skip when using the GAS .p2align command.])])
2376 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2379 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2380 [Define if your assembler supports .literal16.])])
2382 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2384 [conftest_label1: .word 0
2386 conftest_label2: .word 0
2388 [if test x$gcc_cv_nm != x; then
2389 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2390 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2391 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2393 else gcc_cv_as_subsection_m1=yes
2395 rm -f conftest.nm1 conftest.nm2
2397 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2398 [Define if your assembler supports .subsection and .subsection -1 starts
2399 emitting at the beginning of your section.])])
2401 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2404 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2406 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2408 [ .weakref foobar, barfnot],,
2409 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2411 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2414 .NSUBSPA $CODE$,COMDAT],,
2415 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2417 # .hidden needs to be supported in both the assembler and the linker,
2418 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2419 # This is irritatingly difficult to feature test for; we have to check the
2420 # date string after the version number. If we've got an in-tree
2421 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2423 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2424 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2428 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2429 # STV_HIDDEN, so disable .hidden support if so.
2431 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2432 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2433 cat > conftest.s <<EOF
2440 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2441 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2442 grep '\.hidden default' > /dev/null; then
2445 gcc_cv_as_hidden=yes
2448 # Assume bug is present if objdump is missing.
2453 gcc_cv_as_hidden=yes
2458 # Darwin as has some visibility support, though with a different syntax.
2459 gcc_cv_as_hidden=yes
2463 # gnu_indirect_function type is an extension proposed at
2464 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2465 # selection of function implementation
2466 AC_ARG_ENABLE(gnu-indirect-function,
2467 [AS_HELP_STRING([--enable-gnu-indirect-function],
2468 [enable the use of the @gnu_indirect_function to glibc systems])],
2469 [case $enable_gnu_indirect_function in
2471 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2472 Valid choices are 'yes' and 'no'.]) ;;
2474 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2475 if test x$enable_gnu_indirect_function = xyes; then
2476 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2477 [Define if your system supports gnu indirect functions.])
2481 if test $in_tree_ld != yes ; then
2482 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2483 if echo "$ld_ver" | grep GNU > /dev/null; then
2484 if test x"$ld_is_gold" = xyes; then
2485 # GNU gold --version looks like this:
2487 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2489 # We extract the binutils version which is more familiar and specific
2490 # than the gold version.
2491 ld_vers=`echo $ld_ver | sed -n \
2492 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2494 # GNU ld --version looks like this:
2496 # GNU ld (GNU Binutils) 2.21.51.20110225
2497 ld_vers=`echo $ld_ver | sed -n \
2498 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2500 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2501 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2502 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2503 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2507 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2510 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2511 # /usr/ccs/bin/ld has been configured.
2512 ld_ver=`$gcc_cv_ld -V 2>&1`
2513 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2514 ld_vers=`echo $ld_ver | sed -n \
2515 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2516 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2517 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2525 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2526 [[if test $in_tree_ld = yes ; then
2528 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2529 && test $in_tree_ld_is_elf = yes; then
2530 gcc_cv_ld_hidden=yes
2533 gcc_cv_ld_hidden=yes
2534 if test x"$ld_is_gold" = xyes; then
2536 elif echo "$ld_ver" | grep GNU > /dev/null; then
2538 mmix-knuth-mmixware)
2539 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2543 if test 0"$ld_date" -lt 20020404; then
2544 if test -n "$ld_date"; then
2545 # If there was date string, but was earlier than 2002-04-04, fail
2547 elif test -z "$ld_vers"; then
2548 # If there was no date string nor ld version number, something is wrong
2551 test -z "$ld_vers_patch" && ld_vers_patch=0
2552 if test "$ld_vers_major" -lt 2; then
2554 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2555 gcc_cv_ld_hidden="no"
2556 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2564 # Darwin ld has some visibility support.
2565 gcc_cv_ld_hidden=yes
2567 hppa64*-*-hpux* | ia64*-*-hpux*)
2568 gcc_cv_ld_hidden=yes
2570 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2571 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2572 # .symbolic was only added in Solaris 9 12/02.
2573 gcc_cv_ld_hidden=yes
2581 libgcc_visibility=no
2582 AC_SUBST(libgcc_visibility)
2583 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2584 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2585 libgcc_visibility=yes
2586 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2587 [Define if your assembler and linker support .hidden.])
2590 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2591 gcc_cv_ld_ro_rw_mix=unknown
2592 if test $in_tree_ld = yes ; then
2593 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2594 && test $in_tree_ld_is_elf = yes; then
2595 gcc_cv_ld_ro_rw_mix=read-write
2597 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2598 echo '.section myfoosect, "a"' > conftest1.s
2599 echo '.section myfoosect, "aw"' > conftest2.s
2600 echo '.byte 1' >> conftest2.s
2601 echo '.section myfoosect, "a"' > conftest3.s
2602 echo '.byte 0' >> conftest3.s
2603 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2604 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2605 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2606 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2607 conftest2.o conftest3.o > /dev/null 2>&1; then
2608 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2609 | sed -e '/myfoosect/!d' -e N`
2610 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2611 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2612 gcc_cv_ld_ro_rw_mix=read-only
2614 gcc_cv_ld_ro_rw_mix=read-write
2619 rm -f conftest.* conftest[123].*
2622 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2623 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2624 [Define if your linker links a mix of read-only
2625 and read-write sections into a read-write section.])
2627 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2629 gcc_AC_INITFINI_ARRAY
2631 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2632 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2640 [[# GAS versions before 2.11 do not support uleb128,
2641 # despite appearing to.
2642 # ??? There exists an elf-specific test that will crash
2643 # the assembler. Perhaps it's better to figure out whether
2644 # arbitrary sections are supported and try the test.
2645 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2646 if echo "$as_ver" | grep GNU > /dev/null; then
2647 as_vers=`echo $as_ver | sed -n \
2648 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2649 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2650 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2651 if test $as_major -eq 2 && test $as_minor -lt 11
2653 else gcc_cv_as_leb128=yes
2656 [AC_DEFINE(HAVE_AS_LEB128, 1,
2657 [Define if your assembler supports .sleb128 and .uleb128.])])
2659 # Check if we have assembler support for unwind directives.
2660 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2667 .cfi_escape 1, 2, 3, 4, 5
2671 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2672 # read-only and read-write sections, we need to make sure that the
2673 # assembler used emits read-write .eh_frame sections.
2674 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2675 if test "x$gcc_cv_objdump" != x; then
2676 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2677 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2678 gcc_cv_as_cfi_directive=no
2681 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2682 # On Solaris/x86, make sure that GCC and gas agree on using
2683 # read-only .eh_frame sections for 64-bit.
2684 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2685 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2686 sed -e /.eh_frame/!d -e N | \
2687 grep READONLY > /dev/null; then
2688 gcc_cv_as_cfi_directive=yes
2690 gcc_cv_as_cfi_directive=no
2694 gcc_cv_as_cfi_directive=yes
2699 # no objdump, err on the side of caution
2700 gcc_cv_as_cfi_directive=no
2703 gcc_cv_as_cfi_directive=yes
2707 gcc_cv_as_cfi_directive=yes
2710 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2711 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2715 .cfi_adjust_cfa_offset 64
2717 .cfi_adjust_cfa_offset 128
2720 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2721 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2722 gcc_cv_as_cfi_advance_working=yes
2726 # no objdump, err on the side of caution
2727 gcc_cv_as_cfi_advance_working=no
2729 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2730 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2731 [`if test $gcc_cv_as_cfi_directive = yes \
2732 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2733 [Define 0/1 if your assembler supports CFI directives.])
2735 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2736 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2737 gcc_cv_as_cfi_personality_directive, ,,
2740 .cfi_personality 0, symbol
2742 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2743 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2744 then echo 1; else echo 0; fi`],
2745 [Define 0/1 if your assembler supports .cfi_personality.])
2747 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2748 gcc_cv_as_cfi_sections_directive, ,,
2750 .cfi_sections .debug_frame, .eh_frame
2754 win32 | pe | cygwin* | mingw32* | uwin*)
2755 # Need to check that we generated the correct relocation for the
2756 # .debug_frame section. This was fixed for binutils 2.21.
2757 gcc_cv_as_cfi_sections_directive=no
2758 if test "x$gcc_cv_objdump" != x; then
2759 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2760 grep secrel > /dev/null; then
2761 gcc_cv_as_cfi_sections_directive=yes
2766 gcc_cv_as_cfi_sections_directive=yes
2769 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2770 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2771 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2772 then echo 1; else echo 0; fi`],
2773 [Define 0/1 if your assembler supports .cfi_sections.])
2775 # GAS versions up to and including 2.11.0 may mis-optimize
2777 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2785 .section .eh_frame,"aw",@progbits
2787 .4byte .LECIE1-.LSCIE1
2801 .4byte .LEFDE1-.LASFDE1
2803 .4byte .LASFDE1-__FRAME_BEGIN__
2811 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2812 cat > conftest.lit <<EOF
2813 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2814 0010 01000000 12000000 18000000 00000000 ................
2815 0020 08000000 04080000 0044 .........D @&t@
2817 cat > conftest.big <<EOF
2818 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2819 0010 00000001 00000012 00000018 00000000 ................
2820 0020 00000008 04000000 0844 .........D @&t@
2822 # If the assembler didn't choke, and we can objdump,
2823 # and we got the correct data, then succeed.
2824 # The text in the here-document typically retains its unix-style line
2825 # endings, while the output of objdump will use host line endings.
2826 # Therefore, use diff -b for the comparisons.
2827 if test x$gcc_cv_objdump != x \
2828 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2829 | tail -3 > conftest.got \
2830 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2831 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2833 gcc_cv_as_eh_frame=yes
2834 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2835 gcc_cv_as_eh_frame=buggy
2837 # Uh oh, what do we do now?
2838 gcc_cv_as_eh_frame=no
2841 if test $gcc_cv_as_eh_frame = buggy; then
2842 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2843 [Define if your assembler mis-optimizes .eh_frame data.])
2846 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2847 [elf,2,12,0], [--fatal-warnings],
2848 [.section .rodata.str, "aMS", @progbits, 1])
2849 if test $gcc_cv_as_shf_merge = no; then
2850 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2851 [elf,2,12,0], [--fatal-warnings],
2852 [.section .rodata.str, "aMS", %progbits, 1])
2854 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2855 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2856 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2858 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2859 gcc_cv_as_comdat_group,
2860 [elf,2,16,0], [--fatal-warnings],
2861 [.section .text,"axG",@progbits,.foo,comdat])
2862 if test $gcc_cv_as_comdat_group = yes; then
2863 gcc_cv_as_comdat_group_percent=no
2864 gcc_cv_as_comdat_group_group=no
2866 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2867 gcc_cv_as_comdat_group_percent,
2868 [elf,2,16,0], [--fatal-warnings],
2869 [.section .text,"axG",%progbits,.foo,comdat])
2870 if test $gcc_cv_as_comdat_group_percent = yes; then
2871 gcc_cv_as_comdat_group_group=no
2873 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2874 gcc_cv_as_comdat_group_group=no
2877 # Sun as uses a completely different syntax.
2882 .group foo,".text%foo",#comdat
2883 .section ".text%foo", #alloc,#execinstr,#progbits
2888 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2890 .group foo,.text%foo,#comdat
2891 .section .text%foo, "ax", @progbits
2897 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2898 gcc_cv_as_comdat_group_group,
2904 if test x"$ld_is_gold" = xyes; then
2906 elif test $in_tree_ld = yes ; then
2908 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2909 && test $in_tree_ld_is_elf = yes; then
2912 elif echo "$ld_ver" | grep GNU > /dev/null; then
2914 if test 0"$ld_date" -lt 20050308; then
2915 if test -n "$ld_date"; then
2916 # If there was date string, but was earlier than 2005-03-08, fail
2918 elif test "$ld_vers_major" -lt 2; then
2920 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2927 *-*-solaris2.1[1-9]*)
2929 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2930 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2933 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2934 # least ld version 1.2267.
2935 if test "$ld_vers_major" -gt 1; then
2937 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2939 elif test "$ld_vers_minor" -ge 2267; then
2944 # Assume linkers other than GNU ld don't support COMDAT group.
2950 # Allow overriding the automatic COMDAT group tests above.
2951 AC_ARG_ENABLE(comdat,
2952 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2953 [comdat_group="$enable_comdat"])
2954 if test $comdat_group = no; then
2955 gcc_cv_as_comdat_group=no
2956 gcc_cv_as_comdat_group_percent=no
2957 gcc_cv_as_comdat_group_group=no
2959 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2960 [`if test $gcc_cv_as_comdat_group = yes \
2961 || test $gcc_cv_as_comdat_group_percent = yes \
2962 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2963 [Define 0/1 if your assembler and linker support COMDAT groups.])
2965 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2966 gcc_cv_as_discriminator,
2970 .loc 1 1 0 discriminator 1],,
2971 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2972 [Define if your assembler supports the .loc discriminator sub-directive.])])
2974 # Thread-local storage - the check is heavily parameterized.
2983 .section ".tdata","awT",@progbits
2986 ldq $27,__tls_get_addr($29) !literal!1
2987 lda $16,foo($29) !tlsgd!1
2988 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2989 ldq $27,__tls_get_addr($29) !literal!2
2990 lda $16,foo($29) !tlsldm!2
2991 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2992 ldq $1,foo($29) !gotdtprel
2993 ldah $2,foo($29) !dtprelhi
2994 lda $3,foo($2) !dtprello
2995 lda $4,foo($29) !dtprel
2996 ldq $1,foo($29) !gottprel
2997 ldah $2,foo($29) !tprelhi
2998 lda $3,foo($2) !tprello
2999 lda $4,foo($29) !tprel'
3002 tls_as_opt=--fatal-warnings
3004 cris-*-*|crisv32-*-*)
3006 .section ".tdata","awT",@progbits
3013 tls_as_opt=--fatal-warnings
3017 .section ".tdata","awT",@progbits
3029 .section ".tdata","awT",@progbits
3033 addil LT%foo-$tls_gdidx$,gp
3034 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3037 addil LT%foo-$tls_ldidx$,gp
3039 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3040 addil LR%foo-$tls_dtpoff$,%ret0
3041 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3043 addil LT%foo-$tls_ieoff$,gp
3044 ldw RT%foo-$tls_ieoff$(%r1),%t2
3047 addil LR%foo-$tls_leoff$,%t1
3048 ldo RR%foo-$tls_leoff$(%r1),%t2'
3051 tls_as_opt=--fatal-warnings
3055 .section ".tdata","awT",%progbits
3066 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
3068 i[34567]86-*-solaris2.*)
3070 tga_func=___tls_get_addr
3072 x86_64-*-solaris2.1[0-9]*)
3074 tga_func=__tls_get_addr
3080 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3082 .section .tdata,"awt",@progbits'
3086 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3087 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3091 .section ".tdata","awT",@progbits'
3094 tls_as_opt="--fatal-warnings"
3096 conftest_s="$conftest_s
3100 leal foo@tlsgd(,%ebx,1), %eax
3101 leal foo@tlsldm(%ebx), %eax
3102 leal foo@dtpoff(%eax), %edx
3103 movl foo@gottpoff(%ebx), %eax
3104 subl foo@gottpoff(%ebx), %eax
3105 addl foo@gotntpoff(%ebx), %eax
3106 movl foo@indntpoff, %eax
3107 movl \$foo@tpoff, %eax
3108 subl \$foo@tpoff, %eax
3109 leal foo@ntpoff(%ecx), %eax"
3113 .section ".tdata","awT",@progbits
3117 leaq foo@TLSGD(%rip), %rdi
3118 leaq foo@TLSLD(%rip), %rdi
3119 leaq foo@DTPOFF(%rax), %rdx
3120 movq foo@GOTTPOFF(%rip), %rax
3121 movq $foo@TPOFF, %rax'
3124 tls_as_opt=--fatal-warnings
3128 .section ".tdata","awT",@progbits
3131 addl r16 = @ltoff(@dtpmod(foo#)), gp
3132 addl r17 = @ltoff(@dtprel(foo#)), gp
3133 addl r18 = @ltoff(@tprel(foo#)), gp
3134 addl r19 = @dtprel(foo#), gp
3135 adds r21 = @dtprel(foo#), r13
3136 movl r23 = @dtprel(foo#)
3137 addl r20 = @tprel(foo#), gp
3138 adds r22 = @tprel(foo#), r13
3139 movl r24 = @tprel(foo#)'
3142 tls_as_opt=--fatal-warnings
3146 .section .tdata,"awT",@progbits
3150 addiu $4, $28, %tlsgd(x)
3151 addiu $4, $28, %tlsldm(x)
3152 lui $4, %dtprel_hi(x)
3153 addiu $4, $4, %dtprel_lo(x)
3154 lw $4, %gottprel(x)($28)
3155 lui $4, %tprel_hi(x)
3156 addiu $4, $4, %tprel_lo(x)'
3159 tls_as_opt='-32 --fatal-warnings'
3163 .section .tdata,"awT",@progbits
3168 move.l x@TLSGD(%a5),%a0
3169 move.l x@TLSLDM(%a5),%a0
3170 move.l x@TLSLDO(%a5),%a0
3171 move.l x@TLSIE(%a5),%a0
3172 move.l x@TLSLE(%a5),%a0'
3175 tls_as_opt='--fatal-warnings'
3179 .section ".tdata","awT",%progbits
3183 add x0, x0, #:tlsgd_lo12:x
3188 tls_as_opt='--fatal-warnings'
3192 .extern __get_tpointer
3210 .section ".tdata","awT",@progbits
3218 addi 3,31,ld0@got@tlsgd
3220 addi 3,31,x1@got@tlsld
3223 addis 9,3,x2@dtprel@ha
3224 addi 9,9,x2@dtprel@l
3225 lwz 9,x3@got@tprel(31)
3228 addis 9,2,x2@tprel@ha
3229 addi 9,9,x2@tprel@l'
3232 tls_as_opt="-a32 --fatal-warnings"
3236 .section ".tdata","awT",@progbits
3244 addi 3,2,ld0@got@tlsgd
3250 addi 3,2,x1@got@tlsld
3256 addis 9,3,x2@dtprel@ha
3257 addi 9,9,x2@dtprel@l
3260 ld 9,x3@got@dtprel(2)
3266 tls_as_opt="-a64 --fatal-warnings"
3270 .section ".tdata","awT",@progbits
3279 l %r1,foo@GOTNTPOFF(%r12)
3280 l %r1,0(%r1):tls_load:foo
3281 bas %r14,0(%r1,%r13):tls_gdcall:foo
3282 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3285 tls_as_opt="-m31 --fatal-warnings"
3289 .section ".tdata","awT",@progbits
3297 lg %r1,foo@GOTNTPOFF(%r12)
3298 larl %r1,foo@INDNTPOFF
3299 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3300 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3303 tls_as_opt="-m64 -Aesame --fatal-warnings"
3305 sh-*-* | sh[34]-*-*)
3307 .section ".tdata","awT",@progbits
3317 tls_as_opt=--fatal-warnings
3321 sparc*-sun-solaris2.*)
3323 tga_func=__tls_get_addr
3329 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3331 .section ".tdata",#alloc,#write,#tls'
3336 .section ".tdata","awT",@progbits'
3339 tls_as_opt="-32 --fatal-warnings"
3341 conftest_s="$conftest_s
3344 sethi %tgd_hi22(foo), %o0
3345 add %o0, %tgd_lo10(foo), %o1
3346 add %l7, %o1, %o0, %tgd_add(foo)
3347 call __tls_get_addr, %tgd_call(foo)
3348 sethi %tldm_hi22(foo), %l1
3349 add %l1, %tldm_lo10(foo), %l2
3350 add %l7, %l2, %o0, %tldm_add(foo)
3351 call __tls_get_addr, %tldm_call(foo)
3352 sethi %tldo_hix22(foo), %l3
3353 xor %l3, %tldo_lox10(foo), %l4
3354 add %o0, %l4, %l5, %tldo_add(foo)
3355 sethi %tie_hi22(foo), %o3
3356 add %o3, %tie_lo10(foo), %o3
3357 ld [%l7 + %o3], %o2, %tie_ld(foo)
3358 add %g7, %o2, %o4, %tie_add(foo)
3359 sethi %tle_hix22(foo), %l1
3360 xor %l1, %tle_lox10(foo), %o5
3361 ld [%g7 + %o5], %o1"
3365 .section ".tdata","awT",@progbits
3368 addli r0, zero, tls_gd(foo)
3369 auli r0, zero, tls_gd_ha16(foo)
3370 addli r0, r0, tls_gd_lo16(foo)
3372 addli r0, zero, tls_ie(foo)
3373 auli r0, r0, tls_ie_ha16(foo)
3374 addli r0, r0, tls_ie_lo16(foo)'
3377 tls_as_opt="--fatal-warnings"
3381 .section ".tdata","awT",@progbits
3384 shl16insli r0, zero, hw0_last_tls_gd(foo)
3385 shl16insli r0, zero, hw1_last_tls_gd(foo)
3386 shl16insli r0, r0, hw0_tls_gd(foo)
3388 shl16insli r0, zero, hw1_last_tls_ie(foo)
3389 shl16insli r0, r0, hw0_tls_ie(foo)'
3392 tls_as_opt="--fatal-warnings"
3396 .section ".tdata","awT",@progbits
3399 movi a8, foo@TLSFUNC
3400 movi a10, foo@TLSARG
3401 callx8.tls a8, foo@TLSCALL'
3408 if test "x$enable_tls" = xno ; then
3409 : # TLS explicitly disabled.
3410 elif test "x$enable_tls" = xyes ; then
3411 set_have_as_tls=yes # TLS explicitly enabled.
3412 elif test -z "$tls_first_major"; then
3413 : # If we don't have a check, assume no support.
3415 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3416 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3417 [set_have_as_tls=yes])
3420 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3421 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3422 # Sun style that Sun ld and GCC don't support any longer.
3424 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3426 # Check ld and ld.so.1 TLS support.
3427 if echo "$ld_ver" | grep GNU > /dev/null; then
3428 # Assume all interesting versions of GNU ld have TLS support.
3429 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3433 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3435 min_tls_ld_vers_minor=374
3437 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3438 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3439 min_tls_ld_vers_minor=343
3442 if test "$ld_vers_major" -gt 1 || \
3443 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3449 AC_MSG_RESULT($ld_tls_support)
3452 save_LDFLAGS="$LDFLAGS"
3456 AC_MSG_CHECKING(library containing $tga_func)
3457 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3458 # (32-bit x86) only lived in libthread, so check for that. Keep
3459 # set_have_as_tls if found, disable if not.
3460 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3461 # Clear LIBS if we cannot support TLS.
3462 if test $set_have_as_tls = no; then
3465 # Always define LIB_TLS_SPEC, even without TLS support.
3466 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3467 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3468 AC_MSG_RESULT($LIBS)
3471 LDFLAGS="$save_LDFLAGS"
3474 if test $set_have_as_tls = yes ; then
3475 AC_DEFINE(HAVE_AS_TLS, 1,
3476 [Define if your assembler and linker support thread-local storage.])
3479 # Target-specific assembler checks.
3481 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3482 gcc_cv_ld_static_dynamic=no
3483 gcc_cv_ld_static_option='-Bstatic'
3484 gcc_cv_ld_dynamic_option='-Bdynamic'
3485 if test $in_tree_ld = yes ; then
3486 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3487 gcc_cv_ld_static_dynamic=yes
3489 elif test x$gcc_cv_ld != x; then
3490 # Check if linker supports -Bstatic/-Bdynamic option
3491 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3492 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3493 gcc_cv_ld_static_dynamic=yes
3496 # HP-UX ld uses -a flags to select between shared and archive.
3498 if test x"$gnu_ld" = xno; then
3499 gcc_cv_ld_static_dynamic=yes
3500 gcc_cv_ld_static_option="-aarchive_shared"
3501 gcc_cv_ld_dynamic_option="-adefault"
3504 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3506 gcc_cv_ld_static_dynamic=yes
3511 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3512 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3513 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3514 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3515 [Define to the linker option to disable use of shared objects.])
3516 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3517 [Define to the linker option to enable use of shared objects.])
3519 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3521 if test x"$demangler_in_ld" = xyes; then
3522 AC_MSG_CHECKING(linker --demangle support)
3523 gcc_cv_ld_demangle=no
3524 if test $in_tree_ld = yes; then
3525 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3526 gcc_cv_ld_demangle=yes
3528 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3529 # Check if the GNU linker supports --demangle option
3530 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3531 gcc_cv_ld_demangle=yes
3534 if test x"$gcc_cv_ld_demangle" = xyes; then
3535 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3536 [Define if your linker supports --demangle option.])
3538 AC_MSG_RESULT($gcc_cv_ld_demangle)
3541 AC_MSG_CHECKING(linker plugin support)
3543 if test -f liblto_plugin.la; then
3544 save_ld_ver="$ld_ver"
3545 save_ld_vers_major="$ld_vers_major"
3546 save_ld_vers_minor="$ld_vers_minor"
3547 save_ld_is_gold="$ld_is_gold"
3551 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3553 # FIXME: ld_is_gold?
3554 ld_vers_major="$gcc_cv_gld_major_version"
3555 ld_vers_minor="$gcc_cv_gld_minor_version"
3557 # Determine plugin linker version.
3558 # FIXME: Partial duplicate from above, generalize.
3560 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3561 if echo "$ld_ver" | grep GNU > /dev/null; then
3562 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3564 ld_vers=`echo $ld_ver | sed -n \
3565 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3567 ld_vers=`echo $ld_ver | sed -n \
3568 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3570 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3571 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3576 # Determine plugin support.
3577 if echo "$ld_ver" | grep GNU > /dev/null; then
3578 # Require GNU ld or gold 2.21+ for plugin support by default.
3579 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3581 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3582 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3587 ld_ver="$save_ld_ver"
3588 ld_vers_major="$save_ld_vers_major"
3589 ld_vers_minor="$save_ld_vers_minor"
3590 ld_is_gold="$save_ld_is_gold"
3592 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3593 [Define to the level of your linker's plugin support.])
3594 AC_MSG_RESULT($gcc_cv_lto_plugin)
3597 # All TARGET_ABI_OSF targets.
3598 alpha*-*-linux* | alpha*-*-*bsd*)
3599 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3600 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3603 extbl $3, $2, $3 !lituse_bytoff!1
3604 ldq $2, a($29) !literal!1
3605 ldq $4, b($29) !literal!2
3606 ldq_u $3, 0($2) !lituse_base!1
3607 ldq $27, f($29) !literal!5
3608 jsr $26, ($27), f !lituse_jsr!5
3609 ldah $29, 0($26) !gpdisp!3
3610 lda $0, c($29) !gprel
3611 ldah $1, d($29) !gprelhigh
3612 lda $1, d($1) !gprellow
3613 lda $29, 0($29) !gpdisp!3],,
3614 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3615 [Define if your assembler supports explicit relocations.])])
3616 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3617 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3620 ldq $27, a($29) !literal!1
3621 jsr $26, ($27), a !lituse_jsrdirect!1],,
3622 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3623 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3627 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3628 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3629 [-no-mul-bug-abort], [.text],,
3630 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3631 [Define if your assembler supports the -no-mul-bug-abort option.])])
3635 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3636 [.register %g2, #scratch],,
3637 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3638 [Define if your assembler supports .register.])])
3640 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3642 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3643 [Define if your assembler supports -relax option.])])
3645 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3646 gcc_cv_as_sparc_gotdata_op,,
3653 sethi %gdop_hix22(foo), %g1
3654 xor %g1, %gdop_lox10(foo), %g1
3655 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3656 [if test x$gcc_cv_ld != x \
3657 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3658 if test x$gcc_cv_objdump != x; then
3659 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3660 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3661 gcc_cv_as_sparc_gotdata_op=no
3663 gcc_cv_as_sparc_gotdata_op=yes
3668 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3669 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3671 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3672 gcc_cv_as_sparc_ua_pcrel,,
3680 .uaword %r_disp32(foo)],
3681 [if test x$gcc_cv_ld != x \
3682 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3683 gcc_cv_as_sparc_ua_pcrel=yes
3686 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3687 [Define if your assembler and linker support unaligned PC relative relocs.])
3689 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3690 gcc_cv_as_sparc_ua_pcrel_hidden,,
3695 .uaword %r_disp32(foo)
3696 .byte 0x32, 0x33, 0x34
3701 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3702 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3703 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3704 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3705 if $gcc_cv_objdump -R conftest 2> /dev/null \
3706 | grep 'DISP32' > /dev/null 2>&1; then
3709 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3713 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3714 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3715 ]) # unaligned pcrel relocs
3717 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3718 gcc_cv_as_sparc_offsetable_lo10,,
3721 or %g1, %lo(ab) + 12, %g1
3722 or %g1, %lo(ab + 12), %g1],
3723 [if test x$gcc_cv_objdump != x \
3724 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3725 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3726 gcc_cv_as_sparc_offsetable_lo10=yes
3728 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3729 [Define if your assembler supports offsetable %lo().])])
3731 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3732 gcc_cv_as_sparc_fmaf,,
3735 .register %g2, #scratch
3736 .register %g3, #scratch
3738 fmaddd %f0, %f2, %f4, %f6
3739 addxccc %g1, %g2, %g3
3740 fsrl32 %f2, %f4, %f8
3741 fnaddd %f10, %f12, %f14],,
3742 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3743 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3745 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3746 gcc_cv_as_sparc_sparc4,,
3749 .register %g2, #scratch
3750 .register %g3, #scratch
3753 1: cwbneg %g2, %g3, 1f
3756 aes_kexpand0 %f4, %f6, %f8
3757 des_round %f38, %f40, %f42, %f44
3758 camellia_f %f54, %f56, %f58, %f60
3759 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3760 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3761 [Define if your assembler supports SPARC4 instructions.])])
3765 i[34567]86-*-* | x86_64-*-*)
3769 # Full C++ conformance when using a shared libstdc++-v3 requires some
3770 # support from the Cygwin DLL, which in more recent versions exports
3771 # wrappers to aid in interposing and redirecting operators new, delete,
3772 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3773 # are configuring for a version of Cygwin that exports the wrappers.
3774 if test x$host = x$target; then
3775 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3777 # Can't check presence of libc functions during cross-compile, so
3778 # we just have to assume we're building for an up-to-date target.
3779 gcc_ac_cygwin_dll_wrappers=yes
3781 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3782 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3783 [Define if you want to generate code by default that assumes that the
3784 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3787 cygwin* | pe | mingw32* | interix*)
3788 # Recent binutils allows the three-operand form of ".comm" on PE. This
3789 # definition is used unconditionally to initialise the default state of
3790 # the target option variable that governs usage of the feature.
3791 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3792 [2,19,52],,[.comm foo,1,32])
3793 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3794 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3795 [Define if your assembler supports specifying the alignment
3796 of objects allocated using the GAS .comm command.])
3797 # Used for DWARF 2 in PE
3798 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3799 gcc_cv_as_ix86_pe_secrel32,
3805 [if test x$gcc_cv_ld != x \
3806 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3807 gcc_cv_as_ix86_pe_secrel32=yes
3810 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3811 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3812 # Test if the assembler supports the extended form of the .section
3813 # directive that specifies section alignment. LTO support uses this,
3814 # but normally only after installation, so we warn but don't fail the
3815 # configure if LTO is enabled but the assembler does not support it.
3816 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3817 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3818 if test x$gcc_cv_as_section_has_align != xyes; then
3819 case ",$enable_languages," in
3821 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3825 # Test if the assembler supports the section flag 'e' for specifying
3826 # an excluded section.
3827 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3831 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3832 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3833 [Define if your assembler supports specifying the section flag e.])
3837 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3838 gcc_cv_as_ix86_filds,,,
3839 [filds mem; fists mem],,
3840 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3841 [Define if your assembler uses filds and fists mnemonics.])])
3843 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3844 gcc_cv_as_ix86_fildq,,,
3845 [fildq mem; fistpq mem],,
3846 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3847 [Define if your assembler uses fildq and fistq mnemonics.])])
3849 gcc_GAS_CHECK_FEATURE([cmov syntax],
3850 gcc_cv_as_ix86_cmov_sun_syntax,,,
3851 [cmovl.l %edx, %eax],,
3852 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3853 [Define if your assembler supports the Sun syntax for cmov.])])
3855 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3856 gcc_cv_as_ix86_ffreep,,,
3858 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3859 [Define if your assembler supports the ffreep mnemonic.])])
3861 gcc_GAS_CHECK_FEATURE([.quad directive],
3862 gcc_cv_as_ix86_quad,,,
3864 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3865 [Define if your assembler supports the .quad directive.])])
3867 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3868 gcc_cv_as_ix86_sahf,,,
3871 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3872 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3874 gcc_GAS_CHECK_FEATURE([hle prefixes],
3875 gcc_cv_as_ix86_hle,,,
3876 [lock xacquire cmpxchg %esi, (%ecx)],,
3877 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3878 [Define if your assembler supports HLE prefixes.])])
3880 gcc_GAS_CHECK_FEATURE([swap suffix],
3881 gcc_cv_as_ix86_swap,,,
3882 [movl.s %esp, %ebp],,
3883 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3884 [Define if your assembler supports the swap suffix.])])
3886 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3887 gcc_cv_as_ix86_diff_sect_delta,,,
3895 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3896 [Define if your assembler supports the subtraction of symbols in different sections.])])
3898 # These two are used unconditionally by i386.[ch]; it is to be defined
3899 # to 1 if the feature is present, 0 otherwise.
3900 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3901 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3907 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3908 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3909 [Define true if the assembler supports '.long foo@GOTOFF'.])
3911 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3912 gcc_cv_as_ix86_rep_lock_prefix,,,
3918 lock addl %edi, (%eax,%esi)
3919 lock orl $0, (%esp)],,
3920 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3921 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3923 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3924 gcc_cv_as_ix86_tlsgdplt,,,
3925 [call tls_gd@tlsgdplt],
3926 [if test x$gcc_cv_ld != x \
3927 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3928 gcc_cv_as_ix86_tlsgdplt=yes
3931 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3932 [Define if your assembler and linker support @tlsgdplt.])])
3934 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3935 gcc_cv_as_ix86_tlsldmplt,,,
3937 call tls_ld@tlsldmplt],
3938 [if test x$gcc_cv_ld != x \
3939 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3940 gcc_cv_as_ix86_tlsldmplt=yes
3943 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3944 [Define if your assembler and linker support @tlsldmplt.])])
3949 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3950 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3952 addl r15 = @ltoffx(x#), gp
3954 ld8.mov r16 = [[r15]], x#],,
3955 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3956 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3962 *-*-aix*) conftest_s=' .machine "pwr5"
3966 gcc_GAS_CHECK_FEATURE([.machine directive support],
3967 gcc_cv_as_machine_directive,,,
3968 [ .machine ppc7400])
3969 if test x$gcc_cv_as_machine_directive != xyes; then
3970 echo "*** This target requires an assembler supporting \".machine\"" >&2
3971 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3972 test x$build = x$target && exit 1
3976 *) conftest_s=' .machine power4
3981 gcc_GAS_CHECK_FEATURE([mfcr field support],
3982 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3984 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3985 [Define if your assembler supports mfcr field.])])
3988 *-*-aix*) conftest_s=' .machine "pwr5"
3991 *) conftest_s=' .machine power5
3996 gcc_GAS_CHECK_FEATURE([popcntb support],
3997 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3999 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4000 [Define if your assembler supports popcntb field.])])
4003 *-*-aix*) conftest_s=' .machine "pwr5x"
4006 *) conftest_s=' .machine power5
4011 gcc_GAS_CHECK_FEATURE([fp round support],
4012 gcc_cv_as_powerpc_fprnd, [2,17,0],,
4014 [AC_DEFINE(HAVE_AS_FPRND, 1,
4015 [Define if your assembler supports fprnd.])])
4018 *-*-aix*) conftest_s=' .machine "pwr6"
4021 *) conftest_s=' .machine power6
4026 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4027 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4029 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4030 [Define if your assembler supports mffgpr and mftgpr.])])
4033 *-*-aix*) conftest_s=' .csect .text[[PR]]
4035 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4039 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4040 *) conftest_s=' .text
4042 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4045 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4046 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4048 [AC_DEFINE(HAVE_AS_REL16, 1,
4049 [Define if your assembler supports R_PPC_REL16 relocs.])])
4052 *-*-aix*) conftest_s=' .machine "pwr6"
4055 *) conftest_s=' .machine power6
4060 gcc_GAS_CHECK_FEATURE([compare bytes support],
4061 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4063 [AC_DEFINE(HAVE_AS_CMPB, 1,
4064 [Define if your assembler supports cmpb.])])
4067 *-*-aix*) conftest_s=' .machine "pwr6"
4070 *) conftest_s=' .machine power6
4075 gcc_GAS_CHECK_FEATURE([decimal float support],
4076 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4078 [AC_DEFINE(HAVE_AS_DFP, 1,
4079 [Define if your assembler supports DFP instructions.])])
4082 *-*-aix*) conftest_s=' .machine "pwr7"
4085 *) conftest_s=' .machine power7
4090 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4091 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4093 [AC_DEFINE(HAVE_AS_VSX, 1,
4094 [Define if your assembler supports VSX instructions.])])
4097 *-*-aix*) conftest_s=' .machine "pwr7"
4100 *) conftest_s=' .machine power7
4105 gcc_GAS_CHECK_FEATURE([popcntd support],
4106 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4108 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4109 [Define if your assembler supports POPCNTD instructions.])])
4112 *-*-aix*) conftest_s=' .machine "pwr8"
4113 .csect .text[[PR]]';;
4114 *) conftest_s=' .machine power8
4118 gcc_GAS_CHECK_FEATURE([power8 support],
4119 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4121 [AC_DEFINE(HAVE_AS_POWER8, 1,
4122 [Define if your assembler supports POWER8 instructions.])])
4125 *-*-aix*) conftest_s=' .csect .text[[PR]]
4127 *) conftest_s=' .text
4131 gcc_GAS_CHECK_FEATURE([lwsync support],
4132 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4134 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4135 [Define if your assembler supports LWSYNC instructions.])])
4138 *-*-aix*) conftest_s=' .machine "476"
4141 *) conftest_s=' .machine "476"
4146 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4147 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4149 [AC_DEFINE(HAVE_AS_DCI, 1,
4150 [Define if your assembler supports the DCI/ICI instructions.])])
4152 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4153 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4154 [.gnu_attribute 4,1],,
4155 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4156 [Define if your assembler supports .gnu_attribute.])])
4158 gcc_GAS_CHECK_FEATURE([tls marker support],
4159 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4160 [ bl __tls_get_addr(x@tlsgd)],,
4161 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4162 [Define if your assembler supports arg info for __tls_get_addr.])])
4166 gcc_GAS_CHECK_FEATURE([.ref support],
4167 gcc_cv_as_aix_ref, [2,21,0],,
4168 [ .csect stuff[[rw]]
4174 [AC_DEFINE(HAVE_AS_REF, 1,
4175 [Define if your assembler supports .ref])])
4181 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4182 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4183 [ lw $4,%gp_rel(foo)($4)],,
4184 [if test x$target_cpu_default = x
4185 then target_cpu_default=MASK_EXPLICIT_RELOCS
4186 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4188 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4189 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4190 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4191 [Define if the assembler understands -mno-shared.])])
4193 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4194 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4195 [.gnu_attribute 4,1],,
4196 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4197 [Define if your assembler supports .gnu_attribute.])])
4199 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4200 gcc_cv_as_mips_dtprelword, [2,18,0],,
4201 [.section .tdata,"awT",@progbits
4205 .dtprelword x+0x8000],,
4206 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4207 [Define if your assembler supports .dtprelword.])])
4209 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4210 gcc_cv_as_mips_dspr1_mult,,,
4220 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4221 [Define if your assembler supports DSPR1 mult.])])
4223 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4224 gcc_cv_as_ld_jalr_reloc=no
4225 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4226 if test $in_tree_ld = yes ; then
4227 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4228 && test $in_tree_ld_is_elf = yes; then
4229 gcc_cv_as_ld_jalr_reloc=yes
4231 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4232 echo ' .ent x' > conftest.s
4233 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4234 echo ' ld $25,%call16(y)($28)' >> conftest.s
4235 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4236 echo '1: jalr $25' >> conftest.s
4237 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4238 echo '1: jalr $25' >> conftest.s
4239 echo ' .end x' >> conftest.s
4240 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4241 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4242 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4243 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4244 gcc_cv_as_ld_jalr_reloc=yes
4250 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4251 if test x$target_cpu_default = x; then
4252 target_cpu_default=MASK_RELAX_PIC_CALLS
4254 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4257 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4259 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4260 [gcc_cv_ld_mips_personality_relaxation],
4261 [gcc_cv_ld_mips_personality_relaxation=no
4262 if test $in_tree_ld = yes ; then
4263 if test "$gcc_cv_gld_major_version" -eq 2 \
4264 -a "$gcc_cv_gld_minor_version" -ge 21 \
4265 -o "$gcc_cv_gld_major_version" -gt 2; then
4266 gcc_cv_ld_mips_personality_relaxation=yes
4268 elif test x$gcc_cv_as != x \
4269 -a x$gcc_cv_ld != x \
4270 -a x$gcc_cv_readelf != x ; then
4271 cat > conftest.s <<EOF
4273 .cfi_personality 0x80,indirect_ptr
4280 .section .data,"aw",@progbits
4284 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4285 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4286 if $gcc_cv_readelf -d conftest 2>&1 \
4287 | grep TEXTREL > /dev/null 2>&1; then
4289 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4290 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4293 gcc_cv_ld_mips_personality_relaxation=yes
4297 rm -f conftest.s conftest.o conftest])
4298 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4299 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4300 [Define if your linker can relax absolute .eh_frame personality
4301 pointers into PC-relative form.])
4306 # Mips and HP-UX need the GNU assembler.
4307 # Linux on IA64 might be able to use the Intel assembler.
4310 mips*-*-* | *-*-hpux* )
4311 if test x$gas_flag = xyes \
4312 || test x"$host" != x"$build" \
4313 || test ! -x "$gcc_cv_as" \
4314 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4317 echo "*** This configuration requires the GNU assembler" >&2
4323 # ??? Not all targets support dwarf2 debug_line, even within a version
4324 # of gas. Moreover, we need to emit a valid instruction to trigger any
4325 # info to the output file. So, as supported targets are added to gas 2.11,
4326 # add some instruction here to (also) show we expect this might work.
4327 # ??? Once 2.11 is released, probably need to add first known working
4328 # version to the per-target configury.
4330 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4331 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4341 if test x"$insn" != x; then
4343 .file 1 \"conftest.s\"
4346 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4347 gcc_cv_as_dwarf2_debug_line,
4348 [elf,2,11,0],, [$conftest_s],
4349 [if test x$gcc_cv_objdump != x \
4350 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4351 | grep debug_line > /dev/null 2>&1; then
4352 gcc_cv_as_dwarf2_debug_line=yes
4355 # The .debug_line file table must be in the exact order that
4356 # we specified the files, since these indices are also used
4357 # by DW_AT_decl_file. Approximate this test by testing if
4358 # the assembler bitches if the same index is assigned twice.
4359 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4360 gcc_cv_as_dwarf2_file_buggy,,,
4364 if test $gcc_cv_as_dwarf2_debug_line = yes \
4365 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4366 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4367 [Define if your assembler supports dwarf2 .file/.loc directives,
4368 and preserves file table indices exactly as given.])
4371 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4372 gcc_cv_as_gdwarf2_flag,
4373 [elf,2,11,0], [--gdwarf2], [$insn],,
4374 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4375 [Define if your assembler supports the --gdwarf2 option.])])
4377 gcc_GAS_CHECK_FEATURE([--gstabs option],
4378 gcc_cv_as_gstabs_flag,
4379 [elf,2,11,0], [--gstabs], [$insn],
4380 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4381 # and warns about it, but still exits successfully. So check for
4383 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4385 else gcc_cv_as_gstabs_flag=yes
4387 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4388 [Define if your assembler supports the --gstabs option.])])
4390 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4391 gcc_cv_as_debug_prefix_map_flag,
4392 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4393 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4394 [Define if your assembler supports the --debug-prefix-map option.])])
4397 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4400 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4401 [Define if your assembler supports .lcomm with an alignment field.])])
4403 AC_ARG_ENABLE(gnu-unique-object,
4404 [AS_HELP_STRING([--enable-gnu-unique-object],
4405 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4406 [case $enable_gnu_unique_object in
4408 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4409 Valid choices are 'yes' and 'no'.]) ;;
4411 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4413 [.type foo, '$target_type_format_char'gnu_unique_object],,
4414 # We need to unquote above to to use the definition from config.gcc.
4415 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4416 [[if test x$host = x$build -a x$host = x$target &&
4417 ldd --version 2>/dev/null &&
4418 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4419 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4420 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4421 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4422 if test "$glibcnum" -ge 2011 ; then
4423 enable_gnu_unique_object=yes
4426 if test x$enable_gnu_unique_object = xyes; then
4427 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4428 [Define if your assembler supports @gnu_unique_object.])
4431 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4432 [gcc_cv_as_line_zero],
4433 [gcc_cv_as_line_zero=no
4434 if test $in_tree_gas = yes; then
4435 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4436 elif test "x$gcc_cv_as" != x; then
4437 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4438 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4439 test "x`cat conftest.out`" = x
4441 gcc_cv_as_line_zero=yes
4443 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4444 cat conftest.s >&AS_MESSAGE_LOG_FD
4445 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4446 cat conftest.out >&AS_MESSAGE_LOG_FD
4448 rm -f conftest.o conftest.s conftest.out
4450 if test "x$gcc_cv_as_line_zero" = xyes; then
4451 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4452 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4455 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4456 gcc_cv_ld_eh_frame_hdr=no
4457 if test $in_tree_ld = yes ; then
4458 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4459 && test $in_tree_ld_is_elf = yes; then
4460 gcc_cv_ld_eh_frame_hdr=yes
4462 elif test x$gcc_cv_ld != x; then
4463 if echo "$ld_ver" | grep GNU > /dev/null; then
4464 # Check if linker supports --eh-frame-hdr option
4465 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4466 gcc_cv_ld_eh_frame_hdr=yes
4471 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4472 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4473 gcc_cv_ld_eh_frame_hdr=yes
4479 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4480 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4481 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4482 [Define if your linker supports .eh_frame_hdr.])
4484 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4486 AC_MSG_CHECKING(linker position independent executable support)
4488 if test $in_tree_ld = yes ; then
4489 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4490 && test $in_tree_ld_is_elf = yes; then
4493 elif test x$gcc_cv_ld != x; then
4494 # Check if linker supports -pie option
4495 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4499 if test x"$gcc_cv_ld_pie" = xyes; then
4500 AC_DEFINE(HAVE_LD_PIE, 1,
4501 [Define if your linker supports -pie option.])
4503 AC_MSG_RESULT($gcc_cv_ld_pie)
4505 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4506 gcc_cv_ld_eh_gc_sections=no
4507 if test $in_tree_ld = yes ; then
4508 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4509 && test $in_tree_ld_is_elf = yes; then
4510 gcc_cv_ld_eh_gc_sections=yes
4512 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4513 cat > conftest.s <<EOF
4516 .type _start, @function
4519 .size _start, .-_start
4520 .section .text.foo,"ax",@progbits
4521 .type foo, @function
4525 .section .gcc_except_table.foo,"a",@progbits
4528 .section .eh_frame,"a",@progbits
4531 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4532 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4533 | grep "gc-sections option ignored" > /dev/null; then
4534 gcc_cv_ld_eh_gc_sections=no
4535 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4536 | grep gcc_except_table > /dev/null; then
4537 gcc_cv_ld_eh_gc_sections=yes
4538 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4539 if test x$gcc_cv_as_comdat_group != xyes; then
4540 gcc_cv_ld_eh_gc_sections=no
4541 cat > conftest.s <<EOF
4544 .type _start, @function
4547 .size _start, .-_start
4548 .section .gnu.linkonce.t.foo,"ax",@progbits
4549 .type foo, @function
4553 .section .gcc_except_table.foo,"a",@progbits
4556 .section .eh_frame,"a",@progbits
4559 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4560 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4561 | grep "gc-sections option ignored" > /dev/null; then
4562 gcc_cv_ld_eh_gc_sections=no
4563 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4564 | grep gcc_except_table > /dev/null; then
4565 gcc_cv_ld_eh_gc_sections=yes
4571 rm -f conftest.s conftest.o conftest
4575 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4576 gcc_cv_ld_eh_gc_sections=no
4579 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4580 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4581 [Define if your linker supports garbage collection of
4582 sections in presence of EH frames.])
4584 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4586 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4587 gcc_cv_ld_eh_gc_sections_bug=no
4588 if test $in_tree_ld = yes ; then
4589 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4590 && test $in_tree_ld_is_elf = yes; then
4591 gcc_cv_ld_eh_gc_sections_bug=yes
4593 elif test x$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
4594 gcc_cv_ld_eh_gc_sections_bug=yes
4595 cat > conftest.s <<EOF
4598 .type _start, @function
4601 .size _start, .-_start
4602 .section .text.startup.foo,"ax",@progbits
4603 .type foo, @function
4607 .section .gcc_except_table.foo,"a",@progbits
4610 .section .eh_frame,"a",@progbits
4613 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4614 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4615 | grep "gc-sections option ignored" > /dev/null; then
4617 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4618 | grep gcc_except_table > /dev/null; then
4619 gcc_cv_ld_eh_gc_sections_bug=no
4622 rm -f conftest.s conftest.o conftest
4624 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4625 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4626 [Define if your linker has buggy garbage collection of
4627 sections support when .text.startup.foo like sections are used.])
4629 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4635 AC_CACHE_CHECK(linker --as-needed support,
4636 gcc_cv_ld_as_needed,
4637 [gcc_cv_ld_as_needed=no
4638 if test $in_tree_ld = yes ; then
4639 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4640 && test $in_tree_ld_is_elf = yes; then
4641 gcc_cv_ld_as_needed=yes
4643 elif test x$gcc_cv_ld != x; then
4644 # Check if linker supports --as-needed and --no-as-needed options
4645 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4646 gcc_cv_ld_as_needed=yes
4650 if test x"$gcc_cv_ld_as_needed" = xyes; then
4651 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4652 [Define if your linker supports --as-needed and --no-as-needed options.])
4655 case "$target:$tm_file" in
4656 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4659 emul_name="-melf64ppc"
4662 emul_name="-melf64ppc_fbsd"
4665 AC_CACHE_CHECK(linker support for omitting dot symbols,
4666 gcc_cv_ld_no_dot_syms,
4667 [gcc_cv_ld_no_dot_syms=no
4668 if test x"$ld_is_gold" = xyes; then
4669 gcc_cv_ld_no_dot_syms=yes
4670 elif test $in_tree_ld = yes ; then
4671 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4672 gcc_cv_ld_no_dot_syms=yes
4674 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4675 cat > conftest1.s <<EOF
4679 cat > conftest2.s <<EOF
4680 .section ".opd","aw"
4685 .quad .LEfoo,.TOC.@tocbase,0
4691 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4692 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4693 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4694 gcc_cv_ld_no_dot_syms=yes
4696 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4699 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4700 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4701 [Define if your PowerPC64 linker only needs function descriptor syms.])
4704 AC_CACHE_CHECK(linker large toc support,
4705 gcc_cv_ld_large_toc,
4706 [gcc_cv_ld_large_toc=no
4707 if test x"$ld_is_gold" = xyes; then
4708 gcc_cv_ld_large_toc=yes
4709 elif test $in_tree_ld = yes ; then
4710 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4711 gcc_cv_ld_large_toc=yes
4713 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4714 cat > conftest.s <<EOF
4715 .section ".tbss","awT",@nobits
4721 addis 9,13,ie0@got@tprel@ha
4722 ld 9,ie0@got@tprel@l(9)
4724 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4725 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4726 gcc_cv_ld_large_toc=yes
4728 rm -f conftest conftest.o conftest.s
4731 if test x"$gcc_cv_ld_large_toc" = xyes; then
4732 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4733 [Define if your PowerPC64 linker supports a large TOC.])
4740 AC_CACHE_CHECK(linker large toc support,
4741 gcc_cv_ld_large_toc,
4742 [gcc_cv_ld_large_toc=no
4743 if test x$gcc_cv_as != x ; then
4744 cat > conftest.s <<EOF
4754 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4755 gcc_cv_ld_large_toc=yes
4757 rm -f conftest conftest.o conftest.s
4760 if test x"$gcc_cv_ld_large_toc" = xyes; then
4761 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4762 [Define if your AIX linker supports a large TOC.])
4767 AC_CACHE_CHECK(linker --build-id support,
4769 [gcc_cv_ld_buildid=no
4770 if test $in_tree_ld = yes ; then
4771 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4772 "$gcc_cv_gld_minor_version" -ge 18 -o \
4773 "$gcc_cv_gld_major_version" -gt 2 \
4774 && test $in_tree_ld_is_elf = yes; then
4775 gcc_cv_ld_buildid=yes
4777 elif test x$gcc_cv_ld != x; then
4778 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4779 gcc_cv_ld_buildid=yes
4782 if test x"$gcc_cv_ld_buildid" = xyes; then
4783 AC_DEFINE(HAVE_LD_BUILDID, 1,
4784 [Define if your linker supports --build-id.])
4787 AC_ARG_ENABLE(linker-build-id,
4788 [AS_HELP_STRING([--enable-linker-build-id],
4789 [compiler will always pass --build-id to linker])],
4791 enable_linker_build_id=no)
4793 if test x"$enable_linker_build_id" = xyes; then
4794 if test x"$gcc_cv_ld_buildid" = xyes; then
4795 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4796 [Define if gcc should always pass --build-id to linker.])
4798 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4802 # In binutils 2.21, GNU ld gained support for new emulations fully
4803 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4804 AC_CACHE_CHECK(linker *_sol2 emulation support,
4805 gcc_cv_ld_sol2_emulation,
4806 [gcc_cv_ld_sol2_emulation=no
4807 if test $in_tree_ld = yes ; then
4808 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4809 "$gcc_cv_gld_minor_version" -ge 21 -o \
4810 "$gcc_cv_gld_major_version" -gt 2 \
4811 && test $in_tree_ld_is_elf = yes; then
4812 gcc_cv_ld_sol2_emulation=yes
4814 elif test x$gcc_cv_ld != x; then
4815 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4816 grep _sol2 > /dev/null; then
4817 gcc_cv_ld_sol2_emulation=yes
4820 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4821 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4822 [Define if your linker supports the *_sol2 emulations.])
4825 AC_CACHE_CHECK(linker --sysroot support,
4827 [gcc_cv_ld_sysroot=no
4828 if test $in_tree_ld = yes ; then
4829 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4830 gcc_cv_ld_sysroot=yes
4832 elif test x$gcc_cv_ld != x; then
4833 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4834 gcc_cv_ld_sysroot=yes
4837 if test x"$gcc_cv_ld_sysroot" = xyes; then
4838 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4839 [Define if your linker supports --sysroot.])
4842 if test x$with_sysroot = x && test x$host = x$target \
4843 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4844 && test "$prefix" != "NONE"; then
4845 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4846 [Define to PREFIX/include if cpp should also search that directory.])
4849 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4850 if test "x$with_headers" != x; then
4851 target_header_dir=$with_headers
4852 elif test "x$with_sysroot" = x; then
4853 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4854 elif test "x$with_build_sysroot" != "x"; then
4855 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4856 elif test "x$with_sysroot" = xyes; then
4857 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4859 target_header_dir="${with_sysroot}${native_system_header_dir}"
4862 target_header_dir=${native_system_header_dir}
4865 # Test for stack protector support in target C library.
4866 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4867 gcc_cv_libc_provides_ssp,
4868 [gcc_cv_libc_provides_ssp=no
4870 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4871 [# glibc 2.4 and later provides __stack_chk_fail and
4872 # either __stack_chk_guard, or TLS access to stack guard canary.
4873 if test -f $target_header_dir/features.h \
4874 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4875 $target_header_dir/features.h > /dev/null; then
4876 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4877 $target_header_dir/features.h > /dev/null; then
4878 gcc_cv_libc_provides_ssp=yes
4879 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4880 $target_header_dir/features.h > /dev/null \
4881 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4882 $target_header_dir/features.h > /dev/null; then
4883 gcc_cv_libc_provides_ssp=yes
4884 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4885 $target_header_dir/features.h > /dev/null && \
4886 test -f $target_header_dir/bits/uClibc_config.h && \
4887 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4888 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4889 gcc_cv_libc_provides_ssp=yes
4891 # all versions of Bionic support stack protector
4892 elif test -f $target_header_dir/sys/cdefs.h \
4893 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4894 $target_header_dir/sys/cdefs.h > /dev/null; then
4895 gcc_cv_libc_provides_ssp=yes
4899 # Avoid complicated tests (see
4900 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4901 # simply assert that glibc does provide this, which is true for all
4902 # realistically usable GNU/Hurd configurations.
4903 gcc_cv_libc_provides_ssp=yes;;
4904 *-*-darwin* | *-*-freebsd*)
4905 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4906 [echo "no __stack_chk_fail on this target"])
4908 *) gcc_cv_libc_provides_ssp=no ;;
4911 if test x$gcc_cv_libc_provides_ssp = xyes; then
4912 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4913 [Define if your target C library provides stack protector support])
4916 # Test for <sys/sdt.h> on the target.
4917 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4918 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4920 if test -f $target_header_dir/sys/sdt.h; then
4922 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4923 [Define if your target C library provides sys/sdt.h])
4925 AC_MSG_RESULT($have_sys_sdt_h)
4927 # Check if TFmode long double should be used by default or not.
4928 # Some glibc targets used DFmode long double, but with glibc 2.4
4929 # and later they can use TFmode.
4931 powerpc*-*-linux* | \
4935 AC_ARG_WITH(long-double-128,
4936 [AS_HELP_STRING([--with-long-double-128],
4937 [use 128-bit long double by default])],
4938 gcc_cv_target_ldbl128="$with_long_double_128",
4939 [[gcc_cv_target_ldbl128=no
4940 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4941 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4942 && gcc_cv_target_ldbl128=yes
4946 if test x$gcc_cv_target_ldbl128 = xyes; then
4947 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4948 [Define if TFmode long double should be the default])
4951 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4952 gcc_cv_target_dl_iterate_phdr=unknown
4954 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4955 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4956 # libdl there, both complicating its use and breaking compatibility
4957 # between Solaris 10 updates.
4958 *-*-solaris2.1[[1-9]]*)
4959 # <link.h> needs both a dl_iterate_phdr declaration and support for
4960 # compilation with largefile support.
4961 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4962 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4963 gcc_cv_target_dl_iterate_phdr=yes
4965 gcc_cv_target_dl_iterate_phdr=no
4969 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4970 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4971 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4972 [Define if your target C library provides the `dl_iterate_phdr' function.])
4974 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4976 # Find out what GC implementation we want, or may, use.
4978 [AS_HELP_STRING([--with-gc={page,zone}],
4979 [choose the garbage collection mechanism to use
4980 with the compiler])],
4987 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4990 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4995 echo "Using $GGC for garbage collection."
4997 # Libraries to use on the host. This will normally be set by the top
4998 # level Makefile. Here we simply capture the value for our Makefile.
4999 if test -z "${HOST_LIBS+set}"; then
5004 # Use the system's zlib library.
5006 zlibinc="-I\$(srcdir)/../zlib"
5007 AC_ARG_WITH(system-zlib,
5008 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5015 dnl Very limited version of automake's enable-maintainer-mode
5017 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5018 dnl maintainer-mode is disabled by default
5019 AC_ARG_ENABLE(maintainer-mode,
5020 [AS_HELP_STRING([--enable-maintainer-mode],
5021 [enable make rules and dependencies not useful
5022 (and sometimes confusing) to the casual installer])],
5023 maintainer_mode=$enableval,
5026 AC_MSG_RESULT($maintainer_mode)
5028 if test "$maintainer_mode" = "yes"; then
5039 # Make empty files to contain the specs and options for each language.
5040 # Then add #include lines to for a compiler that has specs and/or options.
5046 # These (without "all_") are set in each config-lang.in.
5047 # `language' must be a single word so is spelled singularly.
5050 all_outputs='Makefile'
5051 # List of language makefile fragments.
5053 # Additional files for gengtype
5054 all_gtfiles="$target_gtfiles"
5056 # These are the languages that are set in --enable-languages,
5057 # and are available in the GCC tree.
5058 all_selected_languages=
5060 # Add the language fragments.
5061 # Languages are added via two mechanisms. Some information must be
5062 # recorded in makefile variables, these are defined in config-lang.in.
5063 # We accumulate them and plug them into the main Makefile.
5064 # The other mechanism is a set of hooks for each of the main targets
5065 # like `clean', `install', etc.
5067 language_hooks="Make-hooks"
5069 for lang in ${srcdir}/*/config-lang.in
5072 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5074 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5075 if test "x$lang_alias" = x
5077 echo "$lang doesn't set \$language." 1>&2
5080 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5081 subdirs="$subdirs $subdir"
5083 # $gcc_subdir is where the gcc integration files are to be found
5084 # for a language, both for internal compiler purposes (compiler
5085 # sources implementing front-end to GCC tree converters), and for
5086 # build infrastructure purposes (Make-lang.in, etc.)
5088 # This will be <subdir> (relative to $srcdir) if a line like
5089 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5090 # is found in <langdir>/config-lang.in, and will remain <langdir>
5093 # Except for the language alias (fetched above), the regular
5094 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5095 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5096 # only this and the language alias.
5098 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5099 if [ "$gcc_subdir" = "" ]; then
5100 gcc_subdir="$subdir"
5103 case ",$enable_languages," in
5105 all_selected_languages="$all_selected_languages $lang_alias"
5106 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5107 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5119 . ${srcdir}/$gcc_subdir/config-lang.in
5120 if test "x$language" = x
5122 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5127 case ",$enable_languages," in
5130 for i in $subdir_requires; do
5131 test -f "${srcdir}/$i/config-lang.in" && continue
5139 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5140 if test -f $srcdir/$gcc_subdir/lang.opt; then
5141 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5142 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5144 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5145 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5147 all_languages="$all_languages $language"
5148 all_compilers="$all_compilers $compilers"
5149 all_outputs="$all_outputs $outputs"
5150 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5151 case ",$enable_languages," in
5153 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5155 AC_SUBST(enable_lto)
5162 for language in $all_selected_languages
5164 check_languages="$check_languages check-$language"
5167 # We link each language in with a set of hooks, reached indirectly via
5168 # lang.${target}. Only do so for selected languages.
5172 target_list="all.cross start.encap rest.encap tags \
5173 install-common install-man install-info install-pdf install-html dvi \
5174 pdf html uninstall info man srcextra srcman srcinfo \
5175 mostlyclean clean distclean maintainer-clean install-plugin"
5177 for t in $target_list
5180 for lang in $all_selected_languages
5184 echo "lang.$t: $x" >> Make-hooks
5188 # Option include files
5191 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5192 option_includes="option-includes.mk"
5193 AC_SUBST_FILE(option_includes)
5201 echo "dir ." > .gdbinit
5202 echo "dir ${srcdir}" >> .gdbinit
5203 if test x$gdb_needs_out_file_path = xyes
5205 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5207 if test "x$subdirs" != x; then
5210 echo "dir ${srcdir}/$s" >> .gdbinit
5213 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5215 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5216 AC_SUBST(gcc_tooldir)
5219 # Find a directory in which to install a shared libgcc.
5221 AC_ARG_ENABLE(version-specific-runtime-libs,
5222 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5223 [specify that runtime libraries should be
5224 installed in a compiler-specific directory])])
5226 # Substitute configuration variables
5229 AC_SUBST(all_compilers)
5230 AC_SUBST(all_gtfiles)
5231 AC_SUBST(all_lang_makefrags)
5232 AC_SUBST(all_languages)
5233 AC_SUBST(all_selected_languages)
5234 AC_SUBST(build_exeext)
5235 AC_SUBST(build_install_headers_dir)
5236 AC_SUBST(build_xm_file_list)
5237 AC_SUBST(build_xm_include_list)
5238 AC_SUBST(build_xm_defines)
5239 AC_SUBST(build_file_translate)
5240 AC_SUBST(check_languages)
5241 AC_SUBST(cpp_install_dir)
5242 AC_SUBST(xmake_file)
5243 AC_SUBST(tmake_file)
5244 AC_SUBST(TM_ENDIAN_CONFIG)
5245 AC_SUBST(TM_MULTILIB_CONFIG)
5246 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5247 AC_SUBST(extra_gcc_objs)
5248 AC_SUBST(user_headers_inc_next_pre)
5249 AC_SUBST(user_headers_inc_next_post)
5250 AC_SUBST(extra_headers_list)
5251 AC_SUBST(extra_objs)
5252 AC_SUBST(extra_programs)
5253 AC_SUBST(float_h_file)
5254 AC_SUBST(gcc_config_arguments)
5255 AC_SUBST(gcc_gxx_include_dir)
5256 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5257 AC_SUBST(host_exeext)
5258 AC_SUBST(host_xm_file_list)
5259 AC_SUBST(host_xm_include_list)
5260 AC_SUBST(host_xm_defines)
5261 AC_SUBST(out_host_hook_obj)
5263 AC_SUBST(lang_opt_files)
5264 AC_SUBST(lang_specs_files)
5265 AC_SUBST(lang_tree_files)
5266 AC_SUBST(local_prefix)
5268 AC_SUBST(objc_boehm_gc)
5270 AC_SUBST(out_object_file)
5271 AC_SUBST(common_out_file)
5272 AC_SUBST(common_out_object_file)
5273 AC_SUBST(tm_file_list)
5274 AC_SUBST(tm_include_list)
5275 AC_SUBST(tm_defines)
5276 AC_SUBST(tm_p_file_list)
5277 AC_SUBST(tm_p_include_list)
5278 AC_SUBST(xm_file_list)
5279 AC_SUBST(xm_include_list)
5280 AC_SUBST(xm_defines)
5281 AC_SUBST(use_gcc_stdint)
5282 AC_SUBST(c_target_objs)
5283 AC_SUBST(cxx_target_objs)
5284 AC_SUBST(fortran_target_objs)
5285 AC_SUBST(target_cpu_default)
5287 AC_SUBST_FILE(language_hooks)
5290 if test x${build} = x${host} ; then
5291 if test x${host} = x${target} ; then
5292 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5294 echo "Links are now set up to build a cross-compiler" 1>&2
5295 echo " from ${host} to ${target}." 1>&2
5298 if test x${host} = x${target} ; then
5299 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5300 echo " for ${target}." 1>&2
5302 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5303 echo " from ${host} to ${target}." 1>&2
5307 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5308 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5310 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5311 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5313 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5314 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5315 if test "x${CLOOGLIBS}" != "x" ; then
5316 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5319 # Check for plugin support
5320 AC_ARG_ENABLE(plugin,
5321 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5322 enable_plugin=$enableval,
5323 enable_plugin=yes; default_plugin=yes)
5329 if test x$build = x$host; then
5330 export_sym_check="nm${exeext} -g"
5331 elif test x$host = x$target; then
5332 export_sym_check="$gcc_cv_nm -g"
5338 if test x$build = x$host; then
5339 export_sym_check="objdump${exeext} -T"
5340 elif test x$host = x$target; then
5341 export_sym_check="$gcc_cv_objdump -T"
5348 if test x"$enable_plugin" = x"yes"; then
5350 AC_MSG_CHECKING([for exported symbols])
5351 if test "x$export_sym_check" != x; then
5352 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5353 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5354 if $export_sym_check conftest | grep foobar > /dev/null; then
5355 : # No need to use a flag
5356 AC_MSG_RESULT([yes])
5358 AC_MSG_RESULT([yes])
5359 AC_MSG_CHECKING([for -rdynamic])
5360 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5361 if $export_sym_check conftest | grep foobar > /dev/null; then
5363 pluginlibs="-rdynamic"
5368 AC_MSG_RESULT([$plugin_rdynamic])
5371 AC_MSG_RESULT([unable to check])
5376 AC_SEARCH_LIBS([dlopen], [dl])
5377 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5378 pluginlibs="$pluginlibs -ldl"
5382 # Check that we can build shared objects with -fPIC -shared
5383 saved_LDFLAGS="$LDFLAGS"
5384 saved_CFLAGS="$CFLAGS"
5387 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5388 CFLAGS="$CFLAGS -fPIC"
5389 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5392 CFLAGS="$CFLAGS -fPIC"
5393 LDFLAGS="$LDFLAGS -fPIC -shared"
5396 AC_MSG_CHECKING([for -fPIC -shared])
5398 [extern int X;],[return X == 0;],
5399 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5400 [AC_MSG_RESULT([no]); have_pic_shared=no])
5401 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5405 LDFLAGS="$saved_LDFLAGS"
5406 CFLAGS="$saved_CFLAGS"
5408 # If plugin support had been requested but not available, fail.
5409 if test x"$enable_plugin" = x"no" ; then
5410 if test x"$default_plugin" != x"yes"; then
5412 Building GCC with plugin support requires a host that supports
5413 -fPIC, -shared, -ldl and -rdynamic.])
5418 AC_SUBST(pluginlibs)
5419 AC_SUBST(enable_plugin)
5420 if test x"$enable_plugin" = x"yes"; then
5421 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5425 AC_ARG_ENABLE(libquadmath-support,
5426 [AS_HELP_STRING([--disable-libquadmath-support],
5427 [disable libquadmath support for Fortran])],
5428 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5429 ENABLE_LIBQUADMATH_SUPPORT=yes)
5430 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5431 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5432 [Define to 1 to enable libquadmath support])
5436 # Specify what hash style to use by default.
5437 AC_ARG_WITH([linker-hash-style],
5438 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5439 [specify the linker hash style])],
5440 [case x"$withval" in
5442 LINKER_HASH_STYLE=sysv
5445 LINKER_HASH_STYLE=gnu
5448 LINKER_HASH_STYLE=both
5451 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5454 [LINKER_HASH_STYLE=''])
5455 if test x"${LINKER_HASH_STYLE}" != x; then
5456 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5457 [The linker hash style])
5460 # Configure the subdirectories
5461 # AC_CONFIG_SUBDIRS($subdirs)
5463 # Create the Makefile
5464 # and configure language subdirectories
5465 AC_CONFIG_FILES($all_outputs)
5467 AC_CONFIG_COMMANDS([default],
5469 case ${CONFIG_HEADERS} in
5470 *auto-host.h:config.in*)
5473 # Make sure all the subdirs exist.
5474 for d in $subdirs doc build common c-family
5476 test -d $d || mkdir $d
5479 [subdirs='$subdirs'])