2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 gcc_gxx_include_dir_add_sysroot=0
149 if test "${with_sysroot+set}" = set; then
150 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
151 if test "${gcc_gxx_without_sysroot}"; then
152 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
153 gcc_gxx_include_dir_add_sysroot=1
157 AC_ARG_WITH(cpp_install_dir,
158 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
159 [install the user visible C preprocessor in DIR
160 (relative to PREFIX) as well as PREFIX/bin])],
161 [if test x$withval = xyes; then
162 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
163 elif test x$withval != xno; then
164 cpp_install_dir=$withval
167 # We would like to our source tree to be readonly. However when releases or
168 # pre-releases are generated, the flex/bison generated files as well as the
169 # various formats of manuals need to be included along with the rest of the
170 # sources. Therefore we have --enable-generated-files-in-srcdir to do
173 AC_MSG_CHECKING([whether to place generated files in the source directory])
174 dnl generated-files-in-srcdir is disabled by default
175 AC_ARG_ENABLE(generated-files-in-srcdir,
176 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
177 [put copies of generated files in source dir
178 intended for creating source tarballs for users
179 without texinfo bison or flex])],
180 generated_files_in_srcdir=$enableval,
181 generated_files_in_srcdir=no)
183 AC_MSG_RESULT($generated_files_in_srcdir)
185 if test "$generated_files_in_srcdir" = "yes"; then
192 # -------------------
193 # Find default linker
194 # -------------------
198 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
199 gnu_ld_flag="$with_gnu_ld",
202 # With pre-defined ld
204 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
205 DEFAULT_LINKER="$with_ld")
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test ! -x "$DEFAULT_LINKER"; then
208 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
209 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
212 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
213 [Define to enable the use of a default linker.])
216 AC_MSG_CHECKING([whether a default linker was specified])
217 if test x"${DEFAULT_LINKER+set}" = x"set"; then
218 if test x"$gnu_ld_flag" = x"no"; then
219 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
221 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
227 # With demangler in GNU ld
228 AC_ARG_WITH(demangler-in-ld,
229 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
230 demangler_in_ld="$with_demangler_in_ld",
233 # ----------------------
234 # Find default assembler
235 # ----------------------
239 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
240 gas_flag="$with_gnu_as",
244 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
245 DEFAULT_ASSEMBLER="$with_as")
246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
247 if test ! -x "$DEFAULT_ASSEMBLER"; then
248 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
249 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
252 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
253 [Define to enable the use of a default assembler.])
256 AC_MSG_CHECKING([whether a default assembler was specified])
257 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
258 if test x"$gas_flag" = x"no"; then
259 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
261 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
271 # If a non-executable a.out is present (e.g. created by GNU as above even if
272 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
273 # file, even when creating an executable, so an execution test fails.
274 # Remove possible default executable files to avoid this.
276 # FIXME: This really belongs into AC_PROG_CC and can be removed once
277 # Autoconf includes it.
278 rm -f a.out a.exe b.out
280 # Find the native compiler
284 ACX_PROG_GNAT([-I"$srcdir"/ada])
286 # autoconf is lame and doesn't give us any substitution variable for this.
287 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
288 NO_MINUS_C_MINUS_O=yes
290 OUTPUT_OPTION='-o $@'
292 AC_SUBST(NO_MINUS_C_MINUS_O)
293 AC_SUBST(OUTPUT_OPTION)
295 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
296 # optimizations to be activated explicitly by the toplevel.
299 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
300 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
305 # Determine PICFLAG for target gnatlib.
306 GCC_PICFLAG_FOR_TARGET
307 AC_SUBST(PICFLAG_FOR_TARGET)
309 # -------------------------
310 # Check C compiler features
311 # -------------------------
313 AC_USE_SYSTEM_EXTENSIONS
319 # sizeof(char) is 1 by definition.
320 AC_CHECK_SIZEOF(void *)
321 AC_CHECK_SIZEOF(short)
323 AC_CHECK_SIZEOF(long)
324 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
325 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
328 # ---------------------
329 # Warnings and checking
330 # ---------------------
332 # Check $CC warning features (if it's GCC).
333 # We want to use -pedantic, but we don't want warnings about
337 # * C++11 narrowing conversions in { }
338 # So, we only use -pedantic if we can disable those warnings.
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
345 ACX_PROG_CC_WARNING_OPTS(
346 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
347 ACX_PROG_CC_WARNING_OPTS(
348 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
349 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
350 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
351 [-Wno-overlength-strings])), [strict_warn])
352 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
354 # The above macros do nothing if the compiler is not GCC. However, the
355 # Makefile has more goo to add other flags, so these variables are used
356 # to enable warnings only for GCC.
359 if test "x$GCC" = "xyes"; then
360 warn_cflags='$(GCC_WARN_CFLAGS)'
361 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
363 AC_SUBST(warn_cflags)
364 AC_SUBST(warn_cxxflags)
366 # Disable exceptions and RTTI if building with g++
367 ACX_PROG_CC_WARNING_OPTS(
368 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
371 # Enable expensive internal checks
373 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
377 AC_ARG_ENABLE(checking,
378 [AS_HELP_STRING([[--enable-checking[=LIST]]],
379 [enable expensive run-time checks. With LIST,
380 enable only specific categories of checks.
381 Categories are: yes,no,all,none,release.
382 Flags are: assert,df,fold,gc,gcac,gimple,misc,
383 rtlflag,rtl,runtime,tree,valgrind,types])],
384 [ac_checking_flags="${enableval}"],[
385 # Determine the default checks.
386 if test x$is_release = x ; then
387 ac_checking_flags=yes
389 ac_checking_flags=release
391 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
392 for check in release $ac_checking_flags
395 # these set all the flags to specific states
396 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking=1 ;
398 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
399 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
400 ac_tree_checking=1 ; ac_valgrind_checking= ;
401 ac_types_checking=1 ;;
402 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
403 ac_fold_checking= ; ac_gc_checking= ;
404 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
405 ac_rtlflag_checking= ; ac_runtime_checking= ;
406 ac_tree_checking= ; ac_valgrind_checking= ;
407 ac_types_checking= ;;
408 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
409 ac_fold_checking=1 ; ac_gc_checking=1 ;
410 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
411 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
412 ac_tree_checking=1 ; ac_valgrind_checking= ;
413 ac_types_checking=1 ;;
414 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
415 ac_fold_checking= ; ac_gc_checking= ;
416 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
417 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
418 ac_tree_checking= ; ac_valgrind_checking= ;
419 ac_types_checking= ;;
420 # these enable particular checks
421 assert) ac_assert_checking=1 ;;
422 df) ac_df_checking=1 ;;
423 fold) ac_fold_checking=1 ;;
424 gc) ac_gc_checking=1 ;;
425 gcac) ac_gc_always_collect=1 ;;
426 gimple) ac_gimple_checking=1 ;;
427 misc) ac_checking=1 ;;
428 rtl) ac_rtl_checking=1 ;;
429 rtlflag) ac_rtlflag_checking=1 ;;
430 runtime) ac_runtime_checking=1 ;;
431 tree) ac_tree_checking=1 ;;
432 types) ac_types_checking=1 ;;
433 valgrind) ac_valgrind_checking=1 ;;
434 *) AC_MSG_ERROR(unknown check category $check) ;;
440 if test x$ac_checking != x ; then
441 AC_DEFINE(ENABLE_CHECKING, 1,
442 [Define if you want more run-time sanity checks. This one gets a grab
443 bag of miscellaneous but relatively cheap checks.])
444 nocommon_flag=-fno-common
446 AC_SUBST(nocommon_flag)
447 if test x$ac_df_checking != x ; then
448 AC_DEFINE(ENABLE_DF_CHECKING, 1,
449 [Define if you want more run-time sanity checks for dataflow.])
451 if test x$ac_assert_checking != x ; then
452 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
453 [Define if you want assertions enabled. This is a cheap check.])
455 if test x$ac_gimple_checking != x ; then
456 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
457 [Define if you want operations on GIMPLE (the basic data structure of
458 the high-level optimizers) to be checked for dynamic type safety at
459 runtime. This is moderately expensive.])
461 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
462 if test x$ac_runtime_checking != x ; then
463 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
464 [Define if you want runtime assertions enabled. This is a cheap check.])
466 if test x$ac_tree_checking != x ; then
467 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
468 [Define if you want all operations on trees (the basic data
469 structure of the front ends) to be checked for dynamic type safety
470 at runtime. This is moderately expensive. The tree browser debugging
471 routines will also be enabled by this option.
473 TREEBROWSER=tree-browser.o
475 if test x$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 if test x$ac_rtl_checking != x ; then
483 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
484 [Define if you want all operations on RTL (the basic data structure
485 of the optimizer and back end) to be checked for dynamic type safety
486 at runtime. This is quite expensive.])
488 if test x$ac_rtlflag_checking != x ; then
489 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
490 [Define if you want RTL flag accesses to be checked against the RTL
491 codes that are supported for each access macro. This is relatively
494 if test x$ac_gc_checking != x ; then
495 AC_DEFINE(ENABLE_GC_CHECKING, 1,
496 [Define if you want the garbage collector to do object poisoning and
497 other memory allocation checks. This is quite expensive.])
499 if test x$ac_gc_always_collect != x ; then
500 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
501 [Define if you want the garbage collector to operate in maximally
502 paranoid mode, validating the entire heap and collecting garbage at
503 every opportunity. This is extremely expensive.])
505 if test x$ac_fold_checking != x ; then
506 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
507 [Define if you want fold checked that it never destructs its argument.
508 This is quite expensive.])
510 valgrind_path_defines=
513 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
514 dnl # an if statement. This was the source of very frustrating bugs
515 dnl # in converting to autoconf 2.5x!
516 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
518 if test x$ac_valgrind_checking != x ; then
519 # It is certainly possible that there's valgrind but no valgrind.h.
520 # GCC relies on making annotations so we must have both.
521 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
522 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
523 [[#include <valgrind/memcheck.h>
524 #ifndef VALGRIND_DISCARD
525 #error VALGRIND_DISCARD not defined
527 [gcc_cv_header_valgrind_memcheck_h=yes],
528 [gcc_cv_header_valgrind_memcheck_h=no])
529 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
530 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
531 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
532 [[#include <memcheck.h>
533 #ifndef VALGRIND_DISCARD
534 #error VALGRIND_DISCARD not defined
536 [gcc_cv_header_memcheck_h=yes],
537 [gcc_cv_header_memcheck_h=no])
538 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
539 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
540 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
541 if test "x$valgrind_path" = "x" \
542 || (test $have_valgrind_h = no \
543 && test $gcc_cv_header_memcheck_h = no \
544 && test $gcc_cv_header_valgrind_memcheck_h = no); then
545 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
547 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
548 valgrind_command="$valgrind_path -q"
549 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
550 [Define if you want to run subprograms and generated programs
551 through valgrind (a memory checker). This is extremely expensive.])
552 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
553 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
554 [Define if valgrind's valgrind/memcheck.h header is installed.])
556 if test $gcc_cv_header_memcheck_h = yes; then
557 AC_DEFINE(HAVE_MEMCHECK_H, 1,
558 [Define if valgrind's memcheck.h header is installed.])
561 AC_SUBST(valgrind_path_defines)
562 AC_SUBST(valgrind_command)
564 # Enable code coverage collection
565 AC_ARG_ENABLE(coverage,
566 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
567 [enable compiler's code coverage collection.
568 Use to measure compiler performance and locate
569 unused parts of the compiler. With LEVEL, specify
570 optimization. Values are opt, noopt,
572 [case "${enableval}" in
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
577 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
580 # a.k.a. --disable-coverage
584 AC_MSG_ERROR(unknown coverage setting $enableval)
588 AC_SUBST(coverage_flags)
590 AC_ARG_ENABLE(gather-detailed-mem-stats,
591 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
592 [enable detailed memory allocation stats gathering])], [],
593 [enable_gather_detailed_mem_stats=no])
594 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
595 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
596 [Define to enable detailed memory allocation stats gathering.])
598 # -------------------------------
599 # Miscenalleous configure options
600 # -------------------------------
604 [AS_HELP_STRING([--with-stabs],
605 [arrange to use stabs instead of host debug format])],
609 # Determine whether or not multilibs are enabled.
610 AC_ARG_ENABLE(multilib,
611 [AS_HELP_STRING([--enable-multilib],
612 [enable library support for multiple ABIs])],
613 [], [enable_multilib=yes])
614 AC_SUBST(enable_multilib)
616 # Determine whether or not multiarch is enabled.
617 AC_ARG_ENABLE(multiarch,
618 [AS_HELP_STRING([--enable-multiarch],
619 [enable support for multiarch paths])],
620 [case "${enableval}" in
621 yes|no|auto) enable_multiarch=$enableval;;
622 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
623 esac], [enable_multiarch=auto])
624 if test x${enable_multiarch} = xauto; then
625 if test x${with_native_system_header_dir} != x; then
626 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
629 if test x$host != x$target && test "x$with_sysroot" = x; then
630 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
634 AC_MSG_CHECKING(for multiarch configuration)
635 AC_SUBST(enable_multiarch)
636 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
638 # needed for setting the multiarch name for soft-float/hard-float ABIs
642 # Enable __cxa_atexit for C++.
643 AC_ARG_ENABLE(__cxa_atexit,
644 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
647 # Enable C extension for decimal float if target supports it.
648 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
650 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
651 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
652 [Define to 1 to enable decimal float extension to C.])
654 # Use default_decimal_float for dependency.
655 enable_decimal_float=$default_decimal_float
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [AS_HELP_STRING([--enable-fixed-point],
665 [enable fixed-point arithmetic extension to C])],
670 enable_fixed_point=yes
674 enable_fixed_point=yes
677 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
678 enable_fixed_point=no
682 AC_SUBST(enable_fixed_point)
684 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
685 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
686 [Define to 1 to enable fixed-point arithmetic extension to C.])
689 # Pass with no value to take the default
690 # Pass with a value to specify a thread package
691 AC_ARG_ENABLE(threads,
692 [AS_HELP_STRING([[--enable-threads[=LIB]]],
693 [enable thread usage for target GCC,
694 using LIB thread package])],,
698 [AS_HELP_STRING([--enable-tls],
699 [enable or disable generation of tls code
700 overriding the assembler check for tls support])],
704 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
705 Valid choices are 'yes' and 'no'.]) ;;
709 AC_ARG_ENABLE(objc-gc,
710 [AS_HELP_STRING([--enable-objc-gc],
711 [enable the use of Boehm's garbage collector with
712 the GNU Objective-C runtime])],
713 if test x$enable_objc_gc = xno; then
720 case ,${enable_languages}, in
721 *,upc,) lang_upc_enabled="yes" ;;
725 AC_ARG_WITH([upc-pts],
727 [--with-upc-pts={struct,packed}],
728 [choose the representation of a UPC pointer-to-shared]),
730 if test x"$lang_upc_enabled" = x"yes" ; then
732 packed|struct) upc_pts_rep="$withval" ;;
733 *) AC_MSG_ERROR([$withval is an invalid option to --with-upc-pts])
737 AC_MSG_WARN([--with-upc-pts is allowed only when UPC
738 support has been enabled])
742 if test x"$lang_upc_enabled" = x"yes" ; then
748 # Perl is required for checking pts representation
749 AC_CHECK_PROG(PERL, perl, perl)
751 AC_ARG_WITH([upc-pts-vaddr-order],
753 [--with-upc-pts-vaddr-order={last,first}],
754 [choose position of the address field in UPC pointer-to-shared representation]),
756 if test x"$lang_upc_enabled" = x"yes" ; then
757 upc_vaddr_order="$withval"
758 case "$upc_vaddr_order" in
761 [$withval is an invalid option to --with-upc-pts-vaddr-order]) ;;
764 AC_MSG_WARN([--upc-pts-vaddr-order is allowed only when UPC
765 support has been enabled])
769 if test x"$lang_upc_enabled" = x"yes" ; then
770 # Default UPC PTS vaddr order to "first"
771 upc_vaddr_order="first"
775 AC_ARG_WITH([upc-packed-bits],,
777 AC_MSG_WARN([--with-upc-packed-bits is deprecated.
778 Use --with-upc-pts-packed-bits instead.])
779 with_upc_pts_packed_bits="$withval";
783 AC_ARG_WITH([upc-pts-packed-bits],
785 [--with-upc-pts-packed-bits=phase,thread,vaddr],
786 [choose bit distribution in packed UPC pointer-to-shared representation]),
788 if test x"$lang_upc_enabled" = x"yes" ; then
789 if test x"$upc_pts_rep" = x"packed"; then
790 UPC_PTS_PHASE_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
791 print $1 if ($1+$2+$3 == 64) && $1>=1;'`
792 UPC_PTS_THREAD_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
793 print $2 if ($1+$2+$3 == 64) && $2>=1;'`
794 UPC_PTS_VADDR_SIZE=`echo "$withval" | $PERL -ne 'm/^(\d+),(\d+),(\d+)$/;
795 print $3 if ($1+$2+$3 == 64) && $3>=20;'`
796 if test -z "$UPC_PTS_PHASE_SIZE" \
797 || test -z "$UPC_PTS_THREAD_SIZE" \
798 || test -z "$UPC_PTS_VADDR_SIZE" ; then
799 AC_MSG_ERROR([--with-upc-pts-packed-bits=phase,thread,vaddr requires
800 phase+thread+vaddr=64 and phase >= 1 and thread >= 1 and vaddr >= 20])
803 AC_MSG_ERROR([--with-upc-pts-packed-bits is only supported for
804 the packed UPC pointer-to-shared representation])
807 AC_MSG_WARN([--with-upc-pts-packed-bits is allowed only when UPC
808 support has been enabled])
812 if test x"$lang_upc_enabled" = x"yes" ; then
813 # GNU UPC packed pointer representation defaults.
816 UPC_PTS_PHASE_SIZE=20
817 UPC_PTS_THREAD_SIZE=12
818 UPC_PTS_VADDR_SIZE=32
821 UPC_PTS_PHASE_SIZE=20
822 UPC_PTS_THREAD_SIZE=10
823 UPC_PTS_VADDR_SIZE=34
828 AC_ARG_ENABLE(upc-link-script,
830 [--enable-upc-link-script],
831 [enable UPC's use of a custom linker script;
832 this will define the UPC shared section as a no load section on
833 targets where this feature is supported (requires GNU LD)]),
835 if test x"$lang_upc_enabled" = x"yes" ; then
839 AC_MSG_ERROR([--enable-upc-link-script accepts only yes or no.])
842 AC_MSG_WARN([--enable-upc-link-script is allowed only when UPC
843 support has been enabled])
847 if test x"$lang_upc_enabled" = x"yes" ; then
848 enable_upc_link_script=no
852 if test x"$lang_upc_enabled" = x"yes" ; then
853 AC_MSG_CHECKING([for UPC pointer-to-shared representation])
854 AC_MSG_RESULT([$upc_pts_rep])
855 case "$upc_pts_rep" in
857 AC_DEFINE(HAVE_UPC_PTS_PACKED_REP,[1],
858 [Define to 1 if UPC pointer-to-shared representation
859 is a packed 64 bit word.])
862 AC_DEFINE(HAVE_UPC_PTS_STRUCT_REP,[1],
863 [Define to 1 if UPC pointer-to-shared representation
867 AC_MSG_CHECKING([for UPC pointer-to-shared address field position])
868 AC_MSG_RESULT([$upc_vaddr_order])
869 if test x"$upc_vaddr_order" = x"first"; then
870 AC_DEFINE(HAVE_UPC_PTS_VADDR_FIRST,[1],
871 [Define to 1 if the 'vaddr' field is the first field
872 in the UPC pointer-to-shared representation.])
874 if test x"$upc_pts_rep" = x"packed"; then
875 AC_DEFINE_UNQUOTED(UPC_PTS_PHASE_SIZE,$UPC_PTS_PHASE_SIZE,
876 [For packed UPC pointers-to-shared,
877 the size of the phase field (in bits).])
878 AC_DEFINE_UNQUOTED(UPC_PTS_THREAD_SIZE,$UPC_PTS_THREAD_SIZE,
879 [For packed UPC pointers-to-shared,
880 the size of the thread field (in bits).])
881 AC_DEFINE_UNQUOTED(UPC_PTS_VADDR_SIZE,$UPC_PTS_VADDR_SIZE,
882 [For packed UPC pointers-to-shared,
883 the size of the address field (in bits).])
884 AC_MSG_CHECKING([for packed UPC pointer-to-shared layout])
886 ["phase=${UPC_PTS_PHASE_SIZE},thread=${UPC_PTS_THREAD_SIZE},
887 vaddr=${UPC_PTS_VADDR_SIZE}"])
889 AC_MSG_CHECKING([for UPC link script support])
890 AC_MSG_RESULT($enable_upc_link_script)
891 if test "$enable_upc_link_script" = yes; then
892 AC_DEFINE(HAVE_UPC_LINK_SCRIPT, 1, [Define to 1 if UPC link script is supported.])
897 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
898 dwarf2="$with_dwarf2",
901 AC_ARG_ENABLE(shared,
902 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
904 case $enable_shared in
908 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
909 for pkg in $enableval; do
910 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
917 ], [enable_shared=yes])
918 AC_SUBST(enable_shared)
920 AC_ARG_WITH([native-system-header-dir],
921 [ --with-native-system-header-dir=dir
922 use dir as the directory to look for standard
923 system header files in. Defaults to /usr/include.],
925 case ${with_native_system_header_dir} in
926 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
927 /* | [[A-Za-z]]:[[\\/]]*) ;;
928 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
930 configured_native_system_header_dir="${withval}"
931 ], [configured_native_system_header_dir=])
933 AC_ARG_WITH(build-sysroot,
934 [AS_HELP_STRING([--with-build-sysroot=sysroot],
935 [use sysroot as the system root during the build])],
936 [if test x"$withval" != x ; then
937 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
939 [SYSROOT_CFLAGS_FOR_TARGET=])
940 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
942 if test "x$prefix" = xNONE; then
943 test_prefix=/usr/local
947 if test "x$exec_prefix" = xNONE; then
948 test_exec_prefix=$test_prefix
950 test_exec_prefix=$exec_prefix
954 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
955 [search for usr/lib, usr/include, et al, within DIR])],
957 case ${with_sysroot} in
958 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
959 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
962 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
963 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
965 case ${TARGET_SYSTEM_ROOT} in
966 "${test_prefix}"|"${test_prefix}/"*|\
967 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
968 '${prefix}'|'${prefix}/'*|\
969 '${exec_prefix}'|'${exec_prefix}/'*)
970 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
971 TARGET_SYSTEM_ROOT_DEFINE="$t"
976 TARGET_SYSTEM_ROOT_DEFINE=
977 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
979 AC_SUBST(TARGET_SYSTEM_ROOT)
980 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
981 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
984 [AS_HELP_STRING([--with-specs=SPECS],
985 [add SPECS to driver command-line processing])],
986 [CONFIGURE_SPECS=$withval],
989 AC_SUBST(CONFIGURE_SPECS)
991 ACX_PKGVERSION([GCC])
992 ACX_BUGURL([http://gccupc.org/bugs])
994 # Sanity check enable_languages in case someone does not run the toplevel
995 # configure # script.
996 AC_ARG_ENABLE(languages,
997 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
998 [case ,${enable_languages}, in
1000 # go safe -- we cannot be much sure without the toplevel
1002 # analysis of which target libs are present and usable
1006 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
1011 enable_languages=c,${enable_languages}
1014 [enable_languages=c])
1016 AC_ARG_WITH(multilib-list,
1017 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
1019 with_multilib_list=default)
1021 # -------------------------
1022 # Checks for other programs
1023 # -------------------------
1027 # Find some useful tools
1029 # We need awk to create options.c and options.h.
1030 # Bail out if it's missing.
1032 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
1039 AC_SUBST(ranlib_flags)
1043 # See if cmp has --ignore-initial.
1044 gcc_AC_PROG_CMP_IGNORE_INITIAL
1046 # See if we have the mktemp command.
1047 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
1049 # See if makeinfo has been installed and is modern enough
1050 # that we can use it.
1051 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
1052 [GNU texinfo.* \([0-9][0-9.]*\)],
1053 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
1054 if test $gcc_cv_prog_makeinfo_modern = no; then
1056 *** Makeinfo is missing or too old.
1057 *** Info documentation will not be built.])
1062 AC_SUBST(BUILD_INFO)
1064 # Is pod2man recent enough to regenerate manpages?
1065 AC_MSG_CHECKING([for recent Pod::Man])
1066 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1068 GENERATED_MANPAGES=generated-manpages
1073 AC_SUBST(GENERATED_MANPAGES)
1075 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1078 dnl Don't use AC_PROG_LEX; we insist on flex.
1079 dnl LEXLIB is not useful in gcc.
1080 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1083 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1085 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
1086 # check for build == host before using them.
1089 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1090 && test -d ../binutils ; then
1091 NM='${objdir}/../binutils/nm-new'
1093 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1097 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1098 && test -d ../binutils ; then
1099 AR='${objdir}/../binutils/ar'
1101 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1105 # --------------------
1106 # Checks for C headers
1107 # --------------------
1109 # Need to reject headers which give warnings, so that the -Werror bootstrap
1110 # works later. *sigh* This needs to come before all header checks.
1117 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1118 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
1119 sys/resource.h sys/param.h sys/times.h sys/stat.h \
1120 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
1122 # Check for thread headers.
1123 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1124 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1126 # These tests can't be done till we know if we have limits.h.
1130 # ----------------------
1131 # Checks for C++ headers
1132 # ----------------------
1134 dnl Autoconf will give an error in the configure script if there is no
1135 dnl C++ preprocessor. Hack to prevent that.
1136 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1138 m4_popdef([AC_MSG_ERROR])[]dnl
1142 AC_CHECK_HEADERS(unordered_map)
1143 AC_CHECK_HEADERS(tr1/unordered_map)
1144 AC_CHECK_HEADERS(ext/hash_map)
1153 # These libraries may be used by collect2.
1154 # We may need a special search path to get them linked.
1155 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1157 for libs in '' -lld -lmld \
1158 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1159 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1162 AC_TRY_LINK_FUNC(ldopen,
1163 [gcc_cv_collect2_libs="$libs"; break])
1166 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1167 case $gcc_cv_collect2_libs in
1169 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1171 AC_SUBST(COLLECT2_LIBS)
1173 # When building Ada code on Alpha, we need exc_resume which is usually in
1174 # -lexc. So test for it.
1177 AC_SEARCH_LIBS(exc_resume, exc)
1180 AC_SUBST(GNAT_LIBEXC)
1182 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1185 AC_SEARCH_LIBS(kstat_open, kstat)
1186 EXTRA_GCC_LIBS="$LIBS"
1188 AC_SUBST(EXTRA_GCC_LIBS)
1190 # Some systems put ldexp and frexp in libm instead of libc; assume
1191 # they're both in the same place. jcf-dump needs them.
1194 AC_SEARCH_LIBS(ldexp, m)
1199 # Use <inttypes.h> only if it exists,
1200 # doesn't clash with <sys/types.h>, and declares intmax_t.
1201 AC_MSG_CHECKING(for inttypes.h)
1202 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1203 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1204 [[#include <sys/types.h>
1205 #include <inttypes.h>]],
1206 [[intmax_t i = -1;]])],
1207 [gcc_cv_header_inttypes_h=yes],
1208 [gcc_cv_header_inttypes_h=no])])
1209 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1210 if test $gcc_cv_header_inttypes_h = yes; then
1211 AC_DEFINE(HAVE_INTTYPES_H, 1,
1212 [Define if you have a working <inttypes.h> header file.])
1215 dnl Disabled until we have a complete test for buggy enum bitfields.
1216 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1218 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1219 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1220 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1221 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1222 putchar_unlocked putc_unlocked)
1223 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1224 sysconf strsignal getrusage nl_langinfo \
1225 gettimeofday mbstowcs wcswidth mmap setlocale \
1226 gcc_UNLOCKED_FUNCS madvise)
1228 if test x$ac_cv_func_mbstowcs = xyes; then
1229 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1230 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1236 [gcc_cv_func_mbstowcs_works=yes],
1237 [gcc_cv_func_mbstowcs_works=no],
1238 [gcc_cv_func_mbstowcs_works=yes])])
1239 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1240 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1241 [Define this macro if mbstowcs does not crash when its
1242 first argument is NULL.])
1246 AC_CHECK_TYPE(ssize_t, int)
1247 AC_CHECK_TYPE(caddr_t, char *)
1249 GCC_AC_FUNC_MMAP_BLACKLIST
1253 # Under VMS, vfork works very differently than on Unix. The standard test
1254 # won't work, and it isn't easily adaptable. It makes more sense to
1256 ac_cv_func_vfork_works=yes
1261 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1262 # iconv() prototype.
1267 # Until we have in-tree GNU iconv:
1269 AC_SUBST(LIBICONV_DEP)
1275 # We will need to find libiberty.h and ansidecl.h
1276 saved_CFLAGS="$CFLAGS"
1277 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1278 saved_CXXFLAGS="$CXXFLAGS"
1279 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1280 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1281 strsignal strstr stpcpy strverscmp \
1282 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1283 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1284 #include "ansidecl.h"
1285 #include "system.h"])
1287 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1288 #include "ansidecl.h"
1290 #ifdef HAVE_SYS_RESOURCE_H
1291 #include <sys/resource.h>
1295 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1296 #include "ansidecl.h"
1298 #ifdef HAVE_SYS_RESOURCE_H
1299 #include <sys/resource.h>
1301 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1302 [Define to `long' if <sys/resource.h> doesn't define.])])
1304 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1305 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1306 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1307 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1308 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1309 #include "ansidecl.h"
1318 gcc_AC_CHECK_DECLS(times, , ,[
1319 #include "ansidecl.h"
1321 #ifdef HAVE_SYS_TIMES_H
1322 #include <sys/times.h>
1326 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1327 #include "ansidecl.h"
1332 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1335 gcc_AC_CHECK_DECLS(madvise, , ,[
1336 #include "ansidecl.h"
1341 # More time-related stuff.
1342 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1343 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1344 #include "ansidecl.h"
1346 #ifdef HAVE_SYS_TIMES_H
1347 #include <sys/times.h>
1349 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1350 if test $ac_cv_struct_tms = yes; then
1351 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1352 [Define if <sys/times.h> defines struct tms.])
1355 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1356 # revisit after autoconf 2.50.
1357 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1358 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1359 #include "ansidecl.h"
1361 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1362 if test $gcc_cv_type_clock_t = yes; then
1363 AC_DEFINE(HAVE_CLOCK_T, 1,
1364 [Define if <time.h> defines clock_t.])
1367 # Check if F_SETLKW is supported by fcntl.
1368 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1369 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1370 #include <fcntl.h>]], [[
1376 return fcntl (1, F_SETLKW, &fl);]])],
1377 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1378 if test $ac_cv_f_setlkw = yes; then
1379 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1380 [Define if F_SETLKW supported by fcntl.])
1383 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1384 CFLAGS="$saved_CFLAGS"
1385 CXXFLAGS="$saved_CXXFLAGS"
1387 # mkdir takes a single argument on some systems.
1388 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1396 # With Setjmp/Longjmp based exception handling.
1397 AC_ARG_ENABLE(sjlj-exceptions,
1398 [AS_HELP_STRING([--enable-sjlj-exceptions],
1399 [arrange to use setjmp/longjmp exception handling])],
1402 if test $enableval != yes; then
1403 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1408 force_sjlj_exceptions=yes],
1411 force_sjlj_exceptions=yes
1415 force_sjlj_exceptions=no
1418 if test $force_sjlj_exceptions = yes; then
1419 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1420 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1421 [Define 0/1 to force the choice for exception handling model.])
1424 # --------------------------------------------------------
1425 # Build, host, and target specific configuration fragments
1426 # --------------------------------------------------------
1428 # Collect build-machine-specific information.
1429 . ${srcdir}/config.build
1431 # Collect host-machine-specific information.
1432 . ${srcdir}/config.host
1436 # Collect target-machine-specific information.
1437 . ${srcdir}/config.gcc
1439 extra_objs="${host_extra_objs} ${extra_objs}"
1440 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1442 # Default the target-machine variables that were not explicitly set.
1443 if test x"$tm_file" = x
1444 then tm_file=$cpu_type/$cpu_type.h; fi
1446 if test x"$extra_headers" = x
1447 then extra_headers=; fi
1449 if test x$md_file = x
1450 then md_file=$cpu_type/$cpu_type.md; fi
1452 if test x$out_file = x
1453 then out_file=$cpu_type/$cpu_type.c; fi
1455 if test x"$tmake_file" = x
1456 then tmake_file=$cpu_type/t-$cpu_type
1459 # Support --enable-initfini-array.
1460 if test x$enable_initfini_array != xno; then
1461 tm_file="${tm_file} initfini-array.h"
1464 if test x"$dwarf2" = xyes
1465 then tm_file="$tm_file tm-dwarf2.h"
1468 # Say what files are being used for the output code and MD file.
1469 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1470 echo "Using \`$srcdir/config/$md_file' as machine description file."
1472 # If any of the xm_file variables contain nonexistent files, warn
1473 # about them and drop them.
1476 for x in $build_xm_file; do
1477 if test -f $srcdir/config/$x
1479 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1485 for x in $host_xm_file; do
1486 if test -f $srcdir/config/$x
1488 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1494 for x in $xm_file; do
1495 if test -f $srcdir/config/$x
1497 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1503 for f in $tm_file; do
1506 if test $count = ax; then
1507 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1509 echo "Using the following target machine macro files:"
1510 for f in $tm_file; do
1511 echo " $srcdir/config/$f"
1515 if test x$need_64bit_hwint = xyes; then
1516 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1517 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1520 if test x$use_long_long_for_widest_fast_int = xyes; then
1521 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1522 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1523 efficiently supported by the host hardware.])
1526 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1527 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1529 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1530 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1533 for f in $host_xm_file; do
1536 if test $count = a; then
1538 elif test $count = ax; then
1539 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1541 echo "Using the following host machine macro files:"
1542 for f in $host_xm_file; do
1543 echo " $srcdir/config/$f"
1546 echo "Using ${out_host_hook_obj} for host machine hooks."
1548 if test "$host_xm_file" != "$build_xm_file"; then
1550 for f in $build_xm_file; do
1553 if test $count = a; then
1555 elif test $count = ax; then
1556 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1558 echo "Using the following build machine macro files:"
1559 for f in $build_xm_file; do
1560 echo " $srcdir/config/$f"
1565 if test -n "$configured_native_system_header_dir"; then
1566 native_system_header_dir=$configured_native_system_header_dir
1568 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1569 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1573 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1574 gcc_cv_mcontext_underscores,
1576 #include <sys/cdefs.h>
1577 #include <sys/signal.h>
1578 #include <ucontext.h>
1579 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1581 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1582 if test $gcc_cv_mcontext_underscores = yes; then
1583 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1584 [mcontext_t fields start with __])
1593 # Check if a valid thread package
1594 case ${enable_threads} in
1597 target_thread_file='single'
1601 target_thread_file='single'
1603 aix | dce | lynx | mipssde | posix | rtems | \
1604 single | tpf | vxworks | win32)
1605 target_thread_file=${enable_threads}
1608 echo "${enable_threads} is an unknown thread package" 1>&2
1613 if test x${thread_file} = x; then
1614 # No thread file set by target-specific clauses in config.gcc,
1615 # so use file chosen by default logic above
1616 thread_file=${target_thread_file}
1624 if test x$enable___cxa_atexit = xyes || \
1625 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1626 if test x$host = x$target; then
1628 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1629 # keyed to flag_use_cxa_atexit
1634 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1635 [echo "__cxa_atexit can't be enabled on this target"])
1639 # We can't check for __cxa_atexit when building a cross, so assume
1643 if test x$use_cxa_atexit = xyes; then
1644 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1645 [Define if you want to use __cxa_atexit, rather than atexit, to
1646 register C++ destructors for local statics and global objects.
1647 This is essential for fully standards-compliant handling of
1648 destructors, but requires __cxa_atexit in libc.])
1652 # Look for a file containing extra machine modes.
1653 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1654 extra_modes_file='$(srcdir)'/config/${extra_modes}
1655 AC_SUBST(extra_modes_file)
1656 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1657 [Define to the name of a file containing a list of extra machine modes
1658 for this architecture.])
1661 # Convert extra_options into a form suitable for Makefile use.
1664 for f in $extra_options; do
1665 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1666 all_opt_files="$all_opt_files $srcdir/config/$f"
1668 AC_SUBST(extra_opt_files)
1670 # auto-host.h is the file containing items generated by autoconf and is
1671 # the first file included by config.h.
1672 # If host=build, it is correct to have bconfig include auto-host.h
1673 # as well. If host!=build, we are in error and need to do more
1674 # work to find out the build config parameters.
1675 if test x$host = x$build
1677 build_auto=auto-host.h
1679 # We create a subdir, then run autoconf in the subdir.
1680 # To prevent recursion we set host and build for the new
1681 # invocation of configure to the build for this invocation
1688 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1689 *) realsrcdir=../${srcdir};;
1691 saved_CFLAGS="${CFLAGS}"
1692 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1693 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1694 ${realsrcdir}/configure \
1695 --enable-languages=${enable_languages-all} \
1696 --target=$target_alias --host=$build_alias --build=$build_alias
1697 CFLAGS="${saved_CFLAGS}"
1699 # We just finished tests for the build machine, so rename
1700 # the file auto-build.h in the gcc directory.
1701 mv auto-host.h ../auto-build.h
1704 build_auto=auto-build.h
1706 AC_SUBST(build_subdir)
1708 tm_file="${tm_file} defaults.h"
1709 tm_p_file="${tm_p_file} tm-preds.h"
1710 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1711 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1712 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1713 # put this back in temporarily.
1714 xm_file="auto-host.h ansidecl.h ${xm_file}"
1721 # Compile in configure arguments.
1722 if test -f configargs.h ; then
1723 # Being re-configured.
1724 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1725 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1727 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1730 # Double all backslashes and backslash all quotes to turn
1731 # gcc_config_arguments into a C string.
1732 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1733 $gcc_config_arguments
1735 gcc_config_arguments_str=`cat conftest.out`
1738 cat > configargs.h <<EOF
1739 /* Generated automatically. */
1740 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1741 static const char thread_model[] = "$thread_file";
1743 static const struct {
1744 const char *name, *value;
1745 } configure_default_options[] = $configure_default_options;
1750 gcc_BASEVER=`cat $srcdir/BASE-VER`
1751 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1752 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1753 if test -f $srcdir/REVISION ; then
1754 gcc_REVISION=`cat $srcdir/REVISION`
1758 cat > plugin-version.h <<EOF
1759 #include "configargs.h"
1761 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1762 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1763 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1764 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1766 static char basever[] = "$gcc_BASEVER";
1767 static char datestamp[] = "$gcc_DATESTAMP";
1768 static char devphase[] = "$gcc_DEVPHASE";
1769 static char revision[] = "$gcc_REVISION";
1771 /* FIXME plugins: We should make the version information more precise.
1772 One way to do is to add a checksum. */
1774 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1776 configuration_arguments};
1780 # Internationalization
1781 ZW_GNU_GETTEXT_SISTER_DIR
1783 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1784 # -liconv on the link line twice.
1785 case "$LIBINTL" in *$LIBICONV*)
1789 AC_ARG_ENABLE(secureplt,
1790 [AS_HELP_STRING([--enable-secureplt],
1791 [enable -msecure-plt by default for PowerPC])],
1794 AC_ARG_ENABLE(leading-mingw64-underscores,
1795 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1796 [enable leading underscores on 64 bit mingw targets]),
1798 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1799 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1800 [Define if we should use leading underscore on 64 bit mingw targets])])
1803 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1806 AC_ARG_ENABLE(frame-pointer,
1807 [AS_HELP_STRING([--enable-frame-pointer],
1808 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1811 linux* | darwin[[8912]]*)
1812 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1814 enable_frame_pointer=no
1817 enable_frame_pointer=yes
1822 # Windows32 Registry support for specifying GCC installation paths.
1823 AC_ARG_ENABLE(win32-registry,
1824 [AS_HELP_STRING([--disable-win32-registry],
1825 [disable lookup of installation paths in the
1826 Registry on Windows hosts])
1827 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1828 AS_HELP_STRING([--enable-win32-registry=KEY],
1829 [use KEY instead of GCC version as the last portion
1830 of the registry key])],,)
1833 win32 | pe | cygwin* | mingw32* | uwin*)
1834 if test "x$enable_win32_registry" != xno; then
1835 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1838 if test "x$enable_win32_registry" != xno; then
1839 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1840 [Define to 1 if installation paths should be looked up in the Windows
1841 Registry. Ignored on non-Windows hosts.])
1843 if test "x$enable_win32_registry" != xyes \
1844 && test "x$enable_win32_registry" != x; then
1845 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1846 [Define to be the last component of the Windows registry key under which
1847 to look for installation paths. The full key used will be
1848 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1849 The default is the GCC version number.])
1855 # Get an absolute path to the GCC top-level source directory
1856 holddir=`${PWDCMD-pwd}`
1858 topdir=`${PWDCMD-pwd}`
1861 # Conditionalize the makefile for this host machine.
1863 for f in ${host_xmake_file}
1865 if test -f ${srcdir}/config/$f
1867 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1871 # Conditionalize the makefile for this target machine.
1873 for f in ${tmake_file}
1875 if test -f ${srcdir}/config/$f
1877 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1880 tmake_file="${tmake_file_}"
1882 out_object_file=`basename $out_file .c`.o
1883 common_out_object_file=`basename $common_out_file .c`.o
1885 tm_file_list="options.h"
1886 tm_include_list="options.h insn-constants.h"
1887 for f in $tm_file; do
1890 f=`echo $f | sed 's/^..//'`
1891 tm_file_list="${tm_file_list} $f"
1892 tm_include_list="${tm_include_list} $f"
1895 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1896 tm_include_list="${tm_include_list} $f"
1899 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1900 tm_include_list="${tm_include_list} config/$f"
1907 for f in $tm_p_file; do
1910 tm_p_file_list="${tm_p_file_list} $f"
1911 tm_p_include_list="${tm_p_include_list} $f"
1914 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1915 tm_p_include_list="${tm_p_include_list} config/$f"
1921 for f in $xm_file; do
1924 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1925 xm_include_list="${xm_include_list} $f"
1928 xm_file_list="${xm_file_list} $f"
1929 xm_include_list="${xm_include_list} $f"
1932 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1933 xm_include_list="${xm_include_list} config/$f"
1939 host_xm_include_list=
1940 for f in $host_xm_file; do
1943 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1944 host_xm_include_list="${host_xm_include_list} $f"
1947 host_xm_file_list="${host_xm_file_list} $f"
1948 host_xm_include_list="${host_xm_include_list} $f"
1951 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1952 host_xm_include_list="${host_xm_include_list} config/$f"
1958 for f in $build_xm_file; do
1961 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1962 build_xm_include_list="${build_xm_include_list} $f"
1964 auto-build.h | auto-host.h )
1965 build_xm_file_list="${build_xm_file_list} $f"
1966 build_xm_include_list="${build_xm_include_list} $f"
1969 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1970 build_xm_include_list="${build_xm_include_list} config/$f"
1975 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1976 # cross-compiler which does not use the native headers and libraries.
1977 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1978 CROSS= AC_SUBST(CROSS)
1979 ALL=all.internal AC_SUBST(ALL)
1980 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1982 if test "x$with_build_sysroot" != x; then
1983 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1985 # This value is used, even on a native system, because
1986 # CROSS_SYSTEM_HEADER_DIR is just
1987 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1988 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1991 if test x$host != x$target
1993 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1995 SYSTEM_HEADER_DIR=$build_system_header_dir
1996 case "$host","$target" in
1997 # Darwin crosses can use the host system's libraries and headers,
1998 # because of the fat library support. Of course, it must be the
1999 # same version of Darwin on both sides. Allow the user to
2000 # just say --target=foo-darwin without a version number to mean
2001 # "the version on this system".
2002 *-*-darwin*,*-*-darwin*)
2003 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
2004 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
2005 if test $hostos = $targetos -o $targetos = darwin ; then
2007 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
2012 i?86-*-*,x86_64-*-* \
2013 | powerpc*-*-*,powerpc64*-*-*)
2014 CROSS="$CROSS -DNATIVE_CROSS" ;;
2019 if test "x$with_headers" = x; then
2026 elif test "x$TARGET_SYSTEM_ROOT" != x; then
2027 SYSTEM_HEADER_DIR=$build_system_header_dir
2030 # If this is a cross-compiler that does not
2031 # have its own set of headers then define
2034 # If this is using newlib, without having the headers available now,
2035 # then define inhibit_libc in LIBGCC2_CFLAGS.
2036 # This prevents libgcc2 from containing any code which requires libc
2038 : ${inhibit_libc=false}
2039 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2040 test x$with_newlib = xyes ; } &&
2041 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
2044 AC_SUBST(inhibit_libc)
2046 # When building gcc with a cross-compiler, we need to adjust things so
2047 # that the generator programs are still built with the native compiler.
2048 # Also, we cannot run fixincludes.
2050 # These are the normal (build=host) settings:
2051 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
2052 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
2053 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
2054 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2055 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
2056 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
2058 # And these apply if build != host, or we are generating coverage data
2059 if test x$build != x$host || test "x$coverage_flags" != x
2061 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2062 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2065 # Expand extra_headers to include complete path.
2066 # This substitutes for lots of t-* files.
2068 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2069 for file in ${extra_headers} ; do
2070 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2073 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2074 if test x"$use_gcc_tgmath" = xyes
2075 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2078 # Define collect2 in Makefile.
2079 case $host_can_use_collect2 in
2081 *) collect2='collect2$(exeext)' ;;
2083 AC_SUBST([collect2])
2085 # Add a definition of USE_COLLECT2 if system wants one.
2086 case $use_collect2 in
2087 no) use_collect2= ;;
2090 host_xm_defines="${host_xm_defines} USE_COLLECT2"
2091 xm_defines="${xm_defines} USE_COLLECT2"
2092 case $host_can_use_collect2 in
2094 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2100 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2101 [Define to the name of the LTO plugin DSO that must be
2102 passed to the linker's -plugin=LIB option.])
2104 # ---------------------------
2105 # Assembler & linker features
2106 # ---------------------------
2108 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2109 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2110 # However when ld-new is first executed from the build tree, libtool will
2111 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2112 # to the build tree. While doing this we need to use the previous-stage
2113 # linker, or we have an infinite loop. The presence of a shell script as
2114 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2115 # the gcc/collect-ld script. So we need to know how libtool works, or
2116 # exec-tool will fail.
2118 m4_defun([_LT_CONFIG_COMMANDS], [])
2121 AC_SUBST(enable_fast_install)
2123 # Identify the assembler which will work hand-in-glove with the newly
2124 # built GCC, so that we can examine its features. This is the assembler
2125 # which will be driven by the driver program.
2127 # If build != host, and we aren't building gas in-tree, we identify a
2128 # build->target assembler and hope that it will have the same features
2129 # as the host->target assembler we'll be using.
2130 gcc_cv_gas_major_version=
2131 gcc_cv_gas_minor_version=
2132 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2134 m4_pattern_allow([AS_FOR_TARGET])dnl
2135 AS_VAR_SET_IF(gcc_cv_as,, [
2136 if test -x "$DEFAULT_ASSEMBLER"; then
2137 gcc_cv_as="$DEFAULT_ASSEMBLER"
2138 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2139 && test -f ../gas/Makefile \
2140 && test x$build = x$host; then
2141 gcc_cv_as=../gas/as-new$build_exeext
2142 elif test -x as$build_exeext; then
2143 # Build using assembler in the current directory.
2144 gcc_cv_as=./as$build_exeext
2145 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2146 gcc_cv_as="$AS_FOR_TARGET"
2148 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2151 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2152 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2153 case "$ORIGINAL_AS_FOR_TARGET" in
2154 ./as | ./as$build_exeext) ;;
2155 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2158 AC_MSG_CHECKING(what assembler to use)
2159 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2160 # Single tree build which includes gas. We want to prefer it
2161 # over whatever linker top-level may have detected, since
2162 # we'll use what we're building after installation anyway.
2163 AC_MSG_RESULT(newly built gas)
2165 _gcc_COMPUTE_GAS_VERSION
2166 in_tree_gas_is_elf=no
2167 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2168 || (grep 'obj_format = multi' ../gas/Makefile \
2169 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2171 in_tree_gas_is_elf=yes
2174 AC_MSG_RESULT($gcc_cv_as)
2178 # Identify the linker which will work hand-in-glove with the newly
2179 # built GCC, so that we can examine its features. This is the linker
2180 # which will be driven by the driver program.
2182 # If build != host, and we aren't building gas in-tree, we identify a
2183 # build->target linker and hope that it will have the same features
2184 # as the host->target linker we'll be using.
2185 gcc_cv_gld_major_version=
2186 gcc_cv_gld_minor_version=
2187 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2188 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2190 AS_VAR_SET_IF(gcc_cv_ld,, [
2191 if test -x "$DEFAULT_LINKER"; then
2192 gcc_cv_ld="$DEFAULT_LINKER"
2193 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2194 && test -f ../ld/Makefile \
2195 && test x$build = x$host; then
2196 gcc_cv_ld=../ld/ld-new$build_exeext
2197 elif test -x collect-ld$build_exeext; then
2198 # Build using linker in the current directory.
2199 gcc_cv_ld=./collect-ld$build_exeext
2200 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2201 gcc_cv_ld="$LD_FOR_TARGET"
2203 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2206 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2207 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2208 # if the PLUGIN_LD is set ld-new, just have it as ld
2209 # as that is the installed named.
2210 if test x$PLUGIN_LD_SUFFIX == xld-new \
2211 || test x$PLUGIN_LD_SUFFIX == xcollect-ld ; then
2214 AC_ARG_WITH(plugin-ld,
2215 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2216 [if test x"$withval" != x; then
2217 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2218 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2220 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2221 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2223 # Check to see if we are using gold instead of ld
2224 AC_MSG_CHECKING(whether we are using gold)
2226 if test x$gcc_cv_ld != x; then
2227 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2228 | grep "GNU gold" > /dev/null; then
2232 AC_MSG_RESULT($ld_is_gold)
2234 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2235 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2236 case "$ORIGINAL_LD_FOR_TARGET" in
2237 ./collect-ld | ./collect-ld$build_exeext) ;;
2238 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2241 AC_MSG_CHECKING(what linker to use)
2242 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2243 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2244 # Single tree build which includes ld. We want to prefer it
2245 # over whatever linker top-level may have detected, since
2246 # we'll use what we're building after installation anyway.
2247 AC_MSG_RESULT(newly built ld)
2249 in_tree_ld_is_elf=no
2250 if (grep 'EMUL = .*elf' ../ld/Makefile \
2251 || grep 'EMUL = .*linux' ../ld/Makefile \
2252 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2253 in_tree_ld_is_elf=yes
2254 elif test "$ld_is_gold" = yes; then
2255 in_tree_ld_is_elf=yes
2257 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
2260 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2261 if test x$gcc_cv_gld_version != x; then
2265 case $gcc_cv_gld_version in
2268 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2271 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2272 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2275 AC_MSG_RESULT($gcc_cv_ld)
2279 # Figure out what nm we will be using.
2280 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2281 AS_VAR_SET_IF(gcc_cv_nm,, [
2282 if test -f $gcc_cv_binutils_srcdir/configure.in \
2283 && test -f ../binutils/Makefile \
2284 && test x$build = x$host; then
2285 gcc_cv_nm=../binutils/nm-new$build_exeext
2286 elif test -x nm$build_exeext; then
2287 gcc_cv_nm=./nm$build_exeext
2288 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2289 gcc_cv_nm="$NM_FOR_TARGET"
2291 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2294 AC_MSG_CHECKING(what nm to use)
2295 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2296 # Single tree build which includes binutils.
2297 AC_MSG_RESULT(newly built nm)
2300 AC_MSG_RESULT($gcc_cv_nm)
2304 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2305 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2306 case "$ORIGINAL_NM_FOR_TARGET" in
2307 ./nm | ./nm$build_exeext) ;;
2308 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2312 # Figure out what objdump we will be using.
2313 AS_VAR_SET_IF(gcc_cv_objdump,, [
2314 if test -f $gcc_cv_binutils_srcdir/configure.in \
2315 && test -f ../binutils/Makefile \
2316 && test x$build = x$host; then
2317 # Single tree build which includes binutils.
2318 gcc_cv_objdump=../binutils/objdump$build_exeext
2319 elif test -x objdump$build_exeext; then
2320 gcc_cv_objdump=./objdump$build_exeext
2321 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2322 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2324 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2327 AC_MSG_CHECKING(what objdump to use)
2328 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2329 # Single tree build which includes binutils.
2330 AC_MSG_RESULT(newly built objdump)
2331 elif test x$gcc_cv_objdump = x; then
2332 AC_MSG_RESULT(not found)
2334 AC_MSG_RESULT($gcc_cv_objdump)
2337 # Figure out what readelf we will be using.
2338 AS_VAR_SET_IF(gcc_cv_readelf,, [
2339 if test -f $gcc_cv_binutils_srcdir/configure.in \
2340 && test -f ../binutils/Makefile \
2341 && test x$build = x$host; then
2342 # Single tree build which includes binutils.
2343 gcc_cv_readelf=../binutils/readelf$build_exeext
2344 elif test -x readelf$build_exeext; then
2345 gcc_cv_readelf=./readelf$build_exeext
2347 AC_PATH_PROG(gcc_cv_readelf, readelf)
2350 AC_MSG_CHECKING(what readelf to use)
2351 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2352 # Single tree build which includes binutils.
2353 AC_MSG_RESULT(newly built readelf)
2354 elif test x$gcc_cv_readelf = x; then
2355 AC_MSG_RESULT(not found)
2357 AC_MSG_RESULT($gcc_cv_readelf)
2360 # Figure out what assembler alignment features are present.
2361 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2365 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2366 [Define if your assembler supports .balign and .p2align.])])
2368 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2371 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2372 [Define if your assembler supports specifying the maximum number
2373 of bytes to skip when using the GAS .p2align command.])])
2375 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2378 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2379 [Define if your assembler supports .literal16.])])
2381 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2383 [conftest_label1: .word 0
2385 conftest_label2: .word 0
2387 [if test x$gcc_cv_nm != x; then
2388 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2389 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2390 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2392 else gcc_cv_as_subsection_m1=yes
2394 rm -f conftest.nm1 conftest.nm2
2396 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2397 [Define if your assembler supports .subsection and .subsection -1 starts
2398 emitting at the beginning of your section.])])
2400 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2403 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2405 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2407 [ .weakref foobar, barfnot],,
2408 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2410 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2413 .NSUBSPA $CODE$,COMDAT],,
2414 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2416 # .hidden needs to be supported in both the assembler and the linker,
2417 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2418 # This is irritatingly difficult to feature test for; we have to check the
2419 # date string after the version number. If we've got an in-tree
2420 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2422 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2423 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2427 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2428 # STV_HIDDEN, so disable .hidden support if so.
2430 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2431 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2432 cat > conftest.s <<EOF
2439 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2440 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2441 grep '\.hidden default' > /dev/null; then
2444 gcc_cv_as_hidden=yes
2447 # Assume bug is present if objdump is missing.
2452 gcc_cv_as_hidden=yes
2457 # Darwin as has some visibility support, though with a different syntax.
2458 gcc_cv_as_hidden=yes
2462 # gnu_indirect_function type is an extension proposed at
2463 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2464 # selection of function implementation
2465 AC_ARG_ENABLE(gnu-indirect-function,
2466 [AS_HELP_STRING([--enable-gnu-indirect-function],
2467 [enable the use of the @gnu_indirect_function to glibc systems])],
2468 [case $enable_gnu_indirect_function in
2470 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2471 Valid choices are 'yes' and 'no'.]) ;;
2473 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2474 if test x$enable_gnu_indirect_function = xyes; then
2475 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2476 [Define if your system supports gnu indirect functions.])
2480 if test $in_tree_ld != yes ; then
2481 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2482 if echo "$ld_ver" | grep GNU > /dev/null; then
2483 if test x"$ld_is_gold" = xyes; then
2484 # GNU gold --version looks like this:
2486 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2488 # We extract the binutils version which is more familiar and specific
2489 # than the gold version.
2490 ld_vers=`echo $ld_ver | sed -n \
2491 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2493 # GNU ld --version looks like this:
2495 # GNU ld (GNU Binutils) 2.21.51.20110225
2496 ld_vers=`echo $ld_ver | sed -n \
2497 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2499 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2500 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2501 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2502 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2506 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2509 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2510 # /usr/ccs/bin/ld has been configured.
2511 ld_ver=`$gcc_cv_ld -V 2>&1`
2512 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2513 ld_vers=`echo $ld_ver | sed -n \
2514 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2515 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2516 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2524 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2525 [[if test $in_tree_ld = yes ; then
2527 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2528 && test $in_tree_ld_is_elf = yes; then
2529 gcc_cv_ld_hidden=yes
2532 gcc_cv_ld_hidden=yes
2533 if test x"$ld_is_gold" = xyes; then
2535 elif echo "$ld_ver" | grep GNU > /dev/null; then
2537 mmix-knuth-mmixware)
2538 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2542 if test 0"$ld_date" -lt 20020404; then
2543 if test -n "$ld_date"; then
2544 # If there was date string, but was earlier than 2002-04-04, fail
2546 elif test -z "$ld_vers"; then
2547 # If there was no date string nor ld version number, something is wrong
2550 test -z "$ld_vers_patch" && ld_vers_patch=0
2551 if test "$ld_vers_major" -lt 2; then
2553 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2554 gcc_cv_ld_hidden="no"
2555 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2563 # Darwin ld has some visibility support.
2564 gcc_cv_ld_hidden=yes
2566 hppa64*-*-hpux* | ia64*-*-hpux*)
2567 gcc_cv_ld_hidden=yes
2569 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2570 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2571 # .symbolic was only added in Solaris 9 12/02.
2572 gcc_cv_ld_hidden=yes
2580 libgcc_visibility=no
2581 AC_SUBST(libgcc_visibility)
2582 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2583 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2584 libgcc_visibility=yes
2585 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2586 [Define if your assembler and linker support .hidden.])
2589 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2590 gcc_cv_ld_ro_rw_mix=unknown
2591 if test $in_tree_ld = yes ; then
2592 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2593 && test $in_tree_ld_is_elf = yes; then
2594 gcc_cv_ld_ro_rw_mix=read-write
2596 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2597 echo '.section myfoosect, "a"' > conftest1.s
2598 echo '.section myfoosect, "aw"' > conftest2.s
2599 echo '.byte 1' >> conftest2.s
2600 echo '.section myfoosect, "a"' > conftest3.s
2601 echo '.byte 0' >> conftest3.s
2602 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2603 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2604 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2605 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2606 conftest2.o conftest3.o > /dev/null 2>&1; then
2607 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2608 | sed -e '/myfoosect/!d' -e N`
2609 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2610 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2611 gcc_cv_ld_ro_rw_mix=read-only
2613 gcc_cv_ld_ro_rw_mix=read-write
2618 rm -f conftest.* conftest[123].*
2621 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2622 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2623 [Define if your linker links a mix of read-only
2624 and read-write sections into a read-write section.])
2626 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2628 gcc_AC_INITFINI_ARRAY
2630 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2631 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2639 [[# GAS versions before 2.11 do not support uleb128,
2640 # despite appearing to.
2641 # ??? There exists an elf-specific test that will crash
2642 # the assembler. Perhaps it's better to figure out whether
2643 # arbitrary sections are supported and try the test.
2644 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2645 if echo "$as_ver" | grep GNU > /dev/null; then
2646 as_vers=`echo $as_ver | sed -n \
2647 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2648 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2649 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2650 if test $as_major -eq 2 && test $as_minor -lt 11
2652 else gcc_cv_as_leb128=yes
2655 [AC_DEFINE(HAVE_AS_LEB128, 1,
2656 [Define if your assembler supports .sleb128 and .uleb128.])])
2658 # Check if we have assembler support for unwind directives.
2659 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2666 .cfi_escape 1, 2, 3, 4, 5
2670 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2671 # read-only and read-write sections, we need to make sure that the
2672 # assembler used emits read-write .eh_frame sections.
2673 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2674 if test "x$gcc_cv_objdump" != x; then
2675 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2676 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2677 gcc_cv_as_cfi_directive=no
2680 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2681 # On Solaris/x86, make sure that GCC and gas agree on using
2682 # read-only .eh_frame sections for 64-bit.
2683 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2684 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2685 sed -e /.eh_frame/!d -e N | \
2686 grep READONLY > /dev/null; then
2687 gcc_cv_as_cfi_directive=yes
2689 gcc_cv_as_cfi_directive=no
2693 gcc_cv_as_cfi_directive=yes
2698 # no objdump, err on the side of caution
2699 gcc_cv_as_cfi_directive=no
2702 gcc_cv_as_cfi_directive=yes
2706 gcc_cv_as_cfi_directive=yes
2709 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2710 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2714 .cfi_adjust_cfa_offset 64
2716 .cfi_adjust_cfa_offset 128
2719 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2720 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2721 gcc_cv_as_cfi_advance_working=yes
2725 # no objdump, err on the side of caution
2726 gcc_cv_as_cfi_advance_working=no
2728 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2729 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2730 [`if test $gcc_cv_as_cfi_directive = yes \
2731 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2732 [Define 0/1 if your assembler supports CFI directives.])
2734 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2735 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2736 gcc_cv_as_cfi_personality_directive, ,,
2739 .cfi_personality 0, symbol
2741 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2742 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2743 then echo 1; else echo 0; fi`],
2744 [Define 0/1 if your assembler supports .cfi_personality.])
2746 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2747 gcc_cv_as_cfi_sections_directive, ,,
2749 .cfi_sections .debug_frame, .eh_frame
2753 win32 | pe | cygwin* | mingw32* | uwin*)
2754 # Need to check that we generated the correct relocation for the
2755 # .debug_frame section. This was fixed for binutils 2.21.
2756 gcc_cv_as_cfi_sections_directive=no
2757 if test "x$gcc_cv_objdump" != x; then
2758 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2759 grep secrel > /dev/null; then
2760 gcc_cv_as_cfi_sections_directive=yes
2765 gcc_cv_as_cfi_sections_directive=yes
2768 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2769 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2770 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2771 then echo 1; else echo 0; fi`],
2772 [Define 0/1 if your assembler supports .cfi_sections.])
2774 # GAS versions up to and including 2.11.0 may mis-optimize
2776 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2784 .section .eh_frame,"aw",@progbits
2786 .4byte .LECIE1-.LSCIE1
2800 .4byte .LEFDE1-.LASFDE1
2802 .4byte .LASFDE1-__FRAME_BEGIN__
2810 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2811 cat > conftest.lit <<EOF
2812 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2813 0010 01000000 12000000 18000000 00000000 ................
2814 0020 08000000 04080000 0044 .........D @&t@
2816 cat > conftest.big <<EOF
2817 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2818 0010 00000001 00000012 00000018 00000000 ................
2819 0020 00000008 04000000 0844 .........D @&t@
2821 # If the assembler didn't choke, and we can objdump,
2822 # and we got the correct data, then succeed.
2823 # The text in the here-document typically retains its unix-style line
2824 # endings, while the output of objdump will use host line endings.
2825 # Therefore, use diff -b for the comparisons.
2826 if test x$gcc_cv_objdump != x \
2827 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2828 | tail -3 > conftest.got \
2829 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2830 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2832 gcc_cv_as_eh_frame=yes
2833 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2834 gcc_cv_as_eh_frame=buggy
2836 # Uh oh, what do we do now?
2837 gcc_cv_as_eh_frame=no
2840 if test $gcc_cv_as_eh_frame = buggy; then
2841 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2842 [Define if your assembler mis-optimizes .eh_frame data.])
2845 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2846 [elf,2,12,0], [--fatal-warnings],
2847 [.section .rodata.str, "aMS", @progbits, 1])
2848 if test $gcc_cv_as_shf_merge = no; then
2849 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2850 [elf,2,12,0], [--fatal-warnings],
2851 [.section .rodata.str, "aMS", %progbits, 1])
2853 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2854 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2855 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2857 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2858 gcc_cv_as_comdat_group,
2859 [elf,2,16,0], [--fatal-warnings],
2860 [.section .text,"axG",@progbits,.foo,comdat])
2861 if test $gcc_cv_as_comdat_group = yes; then
2862 gcc_cv_as_comdat_group_percent=no
2863 gcc_cv_as_comdat_group_group=no
2865 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2866 gcc_cv_as_comdat_group_percent,
2867 [elf,2,16,0], [--fatal-warnings],
2868 [.section .text,"axG",%progbits,.foo,comdat])
2869 if test $gcc_cv_as_comdat_group_percent = yes; then
2870 gcc_cv_as_comdat_group_group=no
2872 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2873 gcc_cv_as_comdat_group_group=no
2876 # Sun as uses a completely different syntax.
2881 .group foo,".text%foo",#comdat
2882 .section ".text%foo", #alloc,#execinstr,#progbits
2887 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2889 .group foo,.text%foo,#comdat
2890 .section .text%foo, "ax", @progbits
2896 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2897 gcc_cv_as_comdat_group_group,
2903 if test x"$ld_is_gold" = xyes; then
2905 elif test $in_tree_ld = yes ; then
2907 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2908 && test $in_tree_ld_is_elf = yes; then
2911 elif echo "$ld_ver" | grep GNU > /dev/null; then
2913 if test 0"$ld_date" -lt 20050308; then
2914 if test -n "$ld_date"; then
2915 # If there was date string, but was earlier than 2005-03-08, fail
2917 elif test "$ld_vers_major" -lt 2; then
2919 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2926 *-*-solaris2.1[1-9]*)
2928 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2929 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2932 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2933 # least ld version 1.2267.
2934 if test "$ld_vers_major" -gt 1; then
2936 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2938 elif test "$ld_vers_minor" -ge 2267; then
2943 # Assume linkers other than GNU ld don't support COMDAT group.
2949 # Allow overriding the automatic COMDAT group tests above.
2950 AC_ARG_ENABLE(comdat,
2951 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2952 [comdat_group="$enable_comdat"])
2953 if test $comdat_group = no; then
2954 gcc_cv_as_comdat_group=no
2955 gcc_cv_as_comdat_group_percent=no
2956 gcc_cv_as_comdat_group_group=no
2958 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2959 [`if test $gcc_cv_as_comdat_group = yes \
2960 || test $gcc_cv_as_comdat_group_percent = yes \
2961 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2962 [Define 0/1 if your assembler and linker support COMDAT groups.])
2964 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2965 gcc_cv_as_discriminator,
2969 .loc 1 1 0 discriminator 1],,
2970 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2971 [Define if your assembler supports the .loc discriminator sub-directive.])])
2973 # Thread-local storage - the check is heavily parameterized.
2982 .section ".tdata","awT",@progbits
2985 ldq $27,__tls_get_addr($29) !literal!1
2986 lda $16,foo($29) !tlsgd!1
2987 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2988 ldq $27,__tls_get_addr($29) !literal!2
2989 lda $16,foo($29) !tlsldm!2
2990 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2991 ldq $1,foo($29) !gotdtprel
2992 ldah $2,foo($29) !dtprelhi
2993 lda $3,foo($2) !dtprello
2994 lda $4,foo($29) !dtprel
2995 ldq $1,foo($29) !gottprel
2996 ldah $2,foo($29) !tprelhi
2997 lda $3,foo($2) !tprello
2998 lda $4,foo($29) !tprel'
3001 tls_as_opt=--fatal-warnings
3003 cris-*-*|crisv32-*-*)
3005 .section ".tdata","awT",@progbits
3012 tls_as_opt=--fatal-warnings
3016 .section ".tdata","awT",@progbits
3028 .section ".tdata","awT",@progbits
3032 addil LT%foo-$tls_gdidx$,gp
3033 ldo RT%foo-$tls_gdidx$(%r1),%arg0
3036 addil LT%foo-$tls_ldidx$,gp
3038 ldo RT%foo-$tls_ldidx$(%r1),%arg0
3039 addil LR%foo-$tls_dtpoff$,%ret0
3040 ldo RR%foo-$tls_dtpoff$(%r1),%t1
3042 addil LT%foo-$tls_ieoff$,gp
3043 ldw RT%foo-$tls_ieoff$(%r1),%t2
3046 addil LR%foo-$tls_leoff$,%t1
3047 ldo RR%foo-$tls_leoff$(%r1),%t2'
3050 tls_as_opt=--fatal-warnings
3054 .section ".tdata","awT",%progbits
3065 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
3067 i[34567]86-*-solaris2.*)
3069 tga_func=___tls_get_addr
3071 x86_64-*-solaris2.1[0-9]*)
3073 tga_func=__tls_get_addr
3079 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3081 .section .tdata,"awt",@progbits'
3085 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3086 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3090 .section ".tdata","awT",@progbits'
3093 tls_as_opt="--fatal-warnings"
3095 conftest_s="$conftest_s
3099 leal foo@tlsgd(,%ebx,1), %eax
3100 leal foo@tlsldm(%ebx), %eax
3101 leal foo@dtpoff(%eax), %edx
3102 movl foo@gottpoff(%ebx), %eax
3103 subl foo@gottpoff(%ebx), %eax
3104 addl foo@gotntpoff(%ebx), %eax
3105 movl foo@indntpoff, %eax
3106 movl \$foo@tpoff, %eax
3107 subl \$foo@tpoff, %eax
3108 leal foo@ntpoff(%ecx), %eax"
3112 .section ".tdata","awT",@progbits
3116 leaq foo@TLSGD(%rip), %rdi
3117 leaq foo@TLSLD(%rip), %rdi
3118 leaq foo@DTPOFF(%rax), %rdx
3119 movq foo@GOTTPOFF(%rip), %rax
3120 movq $foo@TPOFF, %rax'
3123 tls_as_opt=--fatal-warnings
3127 .section ".tdata","awT",@progbits
3130 addl r16 = @ltoff(@dtpmod(foo#)), gp
3131 addl r17 = @ltoff(@dtprel(foo#)), gp
3132 addl r18 = @ltoff(@tprel(foo#)), gp
3133 addl r19 = @dtprel(foo#), gp
3134 adds r21 = @dtprel(foo#), r13
3135 movl r23 = @dtprel(foo#)
3136 addl r20 = @tprel(foo#), gp
3137 adds r22 = @tprel(foo#), r13
3138 movl r24 = @tprel(foo#)'
3141 tls_as_opt=--fatal-warnings
3145 .section .tdata,"awT",@progbits
3149 addiu $4, $28, %tlsgd(x)
3150 addiu $4, $28, %tlsldm(x)
3151 lui $4, %dtprel_hi(x)
3152 addiu $4, $4, %dtprel_lo(x)
3153 lw $4, %gottprel(x)($28)
3154 lui $4, %tprel_hi(x)
3155 addiu $4, $4, %tprel_lo(x)'
3158 tls_as_opt='-32 --fatal-warnings'
3162 .section .tdata,"awT",@progbits
3167 move.l x@TLSGD(%a5),%a0
3168 move.l x@TLSLDM(%a5),%a0
3169 move.l x@TLSLDO(%a5),%a0
3170 move.l x@TLSIE(%a5),%a0
3171 move.l x@TLSLE(%a5),%a0'
3174 tls_as_opt='--fatal-warnings'
3178 .section ".tdata","awT",%progbits
3182 add x0, x0, #:tlsgd_lo12:x
3187 tls_as_opt='--fatal-warnings'
3191 .section ".tdata","awT",@progbits
3199 addi 3,31,ld0@got@tlsgd
3201 addi 3,31,x1@got@tlsld
3204 addis 9,3,x2@dtprel@ha
3205 addi 9,9,x2@dtprel@l
3206 lwz 9,x3@got@tprel(31)
3209 addis 9,2,x2@tprel@ha
3210 addi 9,9,x2@tprel@l'
3213 tls_as_opt="-a32 --fatal-warnings"
3217 .section ".tdata","awT",@progbits
3225 addi 3,2,ld0@got@tlsgd
3231 addi 3,2,x1@got@tlsld
3237 addis 9,3,x2@dtprel@ha
3238 addi 9,9,x2@dtprel@l
3241 ld 9,x3@got@dtprel(2)
3247 tls_as_opt="-a64 --fatal-warnings"
3251 .section ".tdata","awT",@progbits
3260 l %r1,foo@GOTNTPOFF(%r12)
3261 l %r1,0(%r1):tls_load:foo
3262 bas %r14,0(%r1,%r13):tls_gdcall:foo
3263 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3266 tls_as_opt="-m31 --fatal-warnings"
3270 .section ".tdata","awT",@progbits
3278 lg %r1,foo@GOTNTPOFF(%r12)
3279 larl %r1,foo@INDNTPOFF
3280 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3281 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3284 tls_as_opt="-m64 -Aesame --fatal-warnings"
3286 sh-*-* | sh[34]-*-*)
3288 .section ".tdata","awT",@progbits
3298 tls_as_opt=--fatal-warnings
3302 sparc*-sun-solaris2.*)
3304 tga_func=__tls_get_addr
3310 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3312 .section ".tdata",#alloc,#write,#tls'
3317 .section ".tdata","awT",@progbits'
3320 tls_as_opt="-32 --fatal-warnings"
3322 conftest_s="$conftest_s
3325 sethi %tgd_hi22(foo), %o0
3326 add %o0, %tgd_lo10(foo), %o1
3327 add %l7, %o1, %o0, %tgd_add(foo)
3328 call __tls_get_addr, %tgd_call(foo)
3329 sethi %tldm_hi22(foo), %l1
3330 add %l1, %tldm_lo10(foo), %l2
3331 add %l7, %l2, %o0, %tldm_add(foo)
3332 call __tls_get_addr, %tldm_call(foo)
3333 sethi %tldo_hix22(foo), %l3
3334 xor %l3, %tldo_lox10(foo), %l4
3335 add %o0, %l4, %l5, %tldo_add(foo)
3336 sethi %tie_hi22(foo), %o3
3337 add %o3, %tie_lo10(foo), %o3
3338 ld [%l7 + %o3], %o2, %tie_ld(foo)
3339 add %g7, %o2, %o4, %tie_add(foo)
3340 sethi %tle_hix22(foo), %l1
3341 xor %l1, %tle_lox10(foo), %o5
3342 ld [%g7 + %o5], %o1"
3346 .section ".tdata","awT",@progbits
3349 addli r0, zero, tls_gd(foo)
3350 auli r0, zero, tls_gd_ha16(foo)
3351 addli r0, r0, tls_gd_lo16(foo)
3353 addli r0, zero, tls_ie(foo)
3354 auli r0, r0, tls_ie_ha16(foo)
3355 addli r0, r0, tls_ie_lo16(foo)'
3358 tls_as_opt="--fatal-warnings"
3362 .section ".tdata","awT",@progbits
3365 shl16insli r0, zero, hw0_last_tls_gd(foo)
3366 shl16insli r0, zero, hw1_last_tls_gd(foo)
3367 shl16insli r0, r0, hw0_tls_gd(foo)
3369 shl16insli r0, zero, hw1_last_tls_ie(foo)
3370 shl16insli r0, r0, hw0_tls_ie(foo)'
3373 tls_as_opt="--fatal-warnings"
3377 .section ".tdata","awT",@progbits
3380 movi a8, foo@TLSFUNC
3381 movi a10, foo@TLSARG
3382 callx8.tls a8, foo@TLSCALL'
3389 if test "x$enable_tls" = xno ; then
3390 : # TLS explicitly disabled.
3391 elif test "x$enable_tls" = xyes ; then
3392 set_have_as_tls=yes # TLS explicitly enabled.
3393 elif test -z "$tls_first_major"; then
3394 : # If we don't have a check, assume no support.
3396 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3397 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3398 [set_have_as_tls=yes])
3401 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3402 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3403 # Sun style that Sun ld and GCC don't support any longer.
3405 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3407 # Check ld and ld.so.1 TLS support.
3408 if echo "$ld_ver" | grep GNU > /dev/null; then
3409 # Assume all interesting versions of GNU ld have TLS support.
3410 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3414 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3416 min_tls_ld_vers_minor=374
3418 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3419 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3420 min_tls_ld_vers_minor=343
3423 if test "$ld_vers_major" -gt 1 || \
3424 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3430 AC_MSG_RESULT($ld_tls_support)
3433 save_LDFLAGS="$LDFLAGS"
3437 AC_MSG_CHECKING(library containing $tga_func)
3438 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3439 # (32-bit x86) only lived in libthread, so check for that. Keep
3440 # set_have_as_tls if found, disable if not.
3441 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3442 # Clear LIBS if we cannot support TLS.
3443 if test $set_have_as_tls = no; then
3446 # Always define LIB_TLS_SPEC, even without TLS support.
3447 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3448 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3449 AC_MSG_RESULT($LIBS)
3452 LDFLAGS="$save_LDFLAGS"
3455 if test $set_have_as_tls = yes ; then
3456 AC_DEFINE(HAVE_AS_TLS, 1,
3457 [Define if your assembler and linker support thread-local storage.])
3460 # Target-specific assembler checks.
3462 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3463 gcc_cv_ld_static_dynamic=no
3464 gcc_cv_ld_static_option='-Bstatic'
3465 gcc_cv_ld_dynamic_option='-Bdynamic'
3466 if test $in_tree_ld = yes ; then
3467 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3468 gcc_cv_ld_static_dynamic=yes
3470 elif test x$gcc_cv_ld != x; then
3471 # Check if linker supports -Bstatic/-Bdynamic option
3472 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3473 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3474 gcc_cv_ld_static_dynamic=yes
3477 # HP-UX ld uses -a flags to select between shared and archive.
3479 if test x"$gnu_ld" = xno; then
3480 gcc_cv_ld_static_dynamic=yes
3481 gcc_cv_ld_static_option="-aarchive_shared"
3482 gcc_cv_ld_dynamic_option="-adefault"
3485 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3487 gcc_cv_ld_static_dynamic=yes
3492 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3493 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3494 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3495 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3496 [Define to the linker option to disable use of shared objects.])
3497 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3498 [Define to the linker option to enable use of shared objects.])
3500 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3502 if test x"$demangler_in_ld" = xyes; then
3503 AC_MSG_CHECKING(linker --demangle support)
3504 gcc_cv_ld_demangle=no
3505 if test $in_tree_ld = yes; then
3506 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3507 gcc_cv_ld_demangle=yes
3509 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3510 # Check if the GNU linker supports --demangle option
3511 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3512 gcc_cv_ld_demangle=yes
3515 if test x"$gcc_cv_ld_demangle" = xyes; then
3516 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3517 [Define if your linker supports --demangle option.])
3519 AC_MSG_RESULT($gcc_cv_ld_demangle)
3522 AC_MSG_CHECKING(linker plugin support)
3524 if test -f liblto_plugin.la; then
3525 save_ld_ver="$ld_ver"
3526 save_ld_vers_major="$ld_vers_major"
3527 save_ld_vers_minor="$ld_vers_minor"
3528 save_ld_is_gold="$ld_is_gold"
3532 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3534 # FIXME: ld_is_gold?
3535 ld_vers_major="$gcc_cv_gld_major_version"
3536 ld_vers_minor="$gcc_cv_gld_minor_version"
3538 # Determine plugin linker version.
3539 # FIXME: Partial duplicate from above, generalize.
3541 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3542 if echo "$ld_ver" | grep GNU > /dev/null; then
3543 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3545 ld_vers=`echo $ld_ver | sed -n \
3546 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3548 ld_vers=`echo $ld_ver | sed -n \
3549 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3551 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3552 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3557 # Determine plugin support.
3558 if echo "$ld_ver" | grep GNU > /dev/null; then
3559 # Require GNU ld or gold 2.21+ for plugin support by default.
3560 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3562 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3563 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3568 ld_ver="$save_ld_ver"
3569 ld_vers_major="$save_ld_vers_major"
3570 ld_vers_minor="$save_ld_vers_minor"
3571 ld_is_gold="$save_ld_is_gold"
3573 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3574 [Define to the level of your linker's plugin support.])
3575 AC_MSG_RESULT($gcc_cv_lto_plugin)
3578 # All TARGET_ABI_OSF targets.
3579 alpha*-*-linux* | alpha*-*-*bsd*)
3580 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3581 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3584 extbl $3, $2, $3 !lituse_bytoff!1
3585 ldq $2, a($29) !literal!1
3586 ldq $4, b($29) !literal!2
3587 ldq_u $3, 0($2) !lituse_base!1
3588 ldq $27, f($29) !literal!5
3589 jsr $26, ($27), f !lituse_jsr!5
3590 ldah $29, 0($26) !gpdisp!3
3591 lda $0, c($29) !gprel
3592 ldah $1, d($29) !gprelhigh
3593 lda $1, d($1) !gprellow
3594 lda $29, 0($29) !gpdisp!3],,
3595 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3596 [Define if your assembler supports explicit relocations.])])
3597 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3598 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3601 ldq $27, a($29) !literal!1
3602 jsr $26, ($27), a !lituse_jsrdirect!1],,
3603 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3604 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3608 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3609 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3610 [-no-mul-bug-abort], [.text],,
3611 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3612 [Define if your assembler supports the -no-mul-bug-abort option.])])
3616 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3617 [.register %g2, #scratch],,
3618 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3619 [Define if your assembler supports .register.])])
3621 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3623 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3624 [Define if your assembler supports -relax option.])])
3626 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3627 gcc_cv_as_sparc_gotdata_op,,
3634 sethi %gdop_hix22(foo), %g1
3635 xor %g1, %gdop_lox10(foo), %g1
3636 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3637 [if test x$gcc_cv_ld != x \
3638 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3639 if test x$gcc_cv_objdump != x; then
3640 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3641 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3642 gcc_cv_as_sparc_gotdata_op=no
3644 gcc_cv_as_sparc_gotdata_op=yes
3649 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3650 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3652 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3653 gcc_cv_as_sparc_ua_pcrel,,
3661 .uaword %r_disp32(foo)],
3662 [if test x$gcc_cv_ld != x \
3663 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3664 gcc_cv_as_sparc_ua_pcrel=yes
3667 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3668 [Define if your assembler and linker support unaligned PC relative relocs.])
3670 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3671 gcc_cv_as_sparc_ua_pcrel_hidden,,
3676 .uaword %r_disp32(foo)
3677 .byte 0x32, 0x33, 0x34
3682 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3683 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3684 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3685 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3686 if $gcc_cv_objdump -R conftest 2> /dev/null \
3687 | grep 'DISP32' > /dev/null 2>&1; then
3690 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3694 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3695 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3696 ]) # unaligned pcrel relocs
3698 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3699 gcc_cv_as_sparc_offsetable_lo10,,
3702 or %g1, %lo(ab) + 12, %g1
3703 or %g1, %lo(ab + 12), %g1],
3704 [if test x$gcc_cv_objdump != x \
3705 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3706 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3707 gcc_cv_as_sparc_offsetable_lo10=yes
3709 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3710 [Define if your assembler supports offsetable %lo().])])
3712 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3713 gcc_cv_as_sparc_fmaf,,
3716 .register %g2, #scratch
3717 .register %g3, #scratch
3719 fmaddd %f0, %f2, %f4, %f6
3720 addxccc %g1, %g2, %g3
3721 fsrl32 %f2, %f4, %f8
3722 fnaddd %f10, %f12, %f14],,
3723 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3724 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3726 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3727 gcc_cv_as_sparc_sparc4,,
3730 .register %g2, #scratch
3731 .register %g3, #scratch
3734 1: cwbneg %g2, %g3, 1f
3737 aes_kexpand0 %f4, %f6, %f8
3738 des_round %f38, %f40, %f42, %f44
3739 camellia_f %f54, %f56, %f58, %f60
3740 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3741 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3742 [Define if your assembler supports SPARC4 instructions.])])
3746 i[34567]86-*-* | x86_64-*-*)
3750 # Full C++ conformance when using a shared libstdc++-v3 requires some
3751 # support from the Cygwin DLL, which in more recent versions exports
3752 # wrappers to aid in interposing and redirecting operators new, delete,
3753 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3754 # are configuring for a version of Cygwin that exports the wrappers.
3755 if test x$host = x$target; then
3756 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3758 # Can't check presence of libc functions during cross-compile, so
3759 # we just have to assume we're building for an up-to-date target.
3760 gcc_ac_cygwin_dll_wrappers=yes
3762 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3763 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3764 [Define if you want to generate code by default that assumes that the
3765 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3768 cygwin* | pe | mingw32* | interix*)
3769 # Recent binutils allows the three-operand form of ".comm" on PE. This
3770 # definition is used unconditionally to initialise the default state of
3771 # the target option variable that governs usage of the feature.
3772 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3773 [2,19,52],,[.comm foo,1,32])
3774 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3775 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3776 [Define if your assembler supports specifying the alignment
3777 of objects allocated using the GAS .comm command.])
3778 # Used for DWARF 2 in PE
3779 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3780 gcc_cv_as_ix86_pe_secrel32,
3786 [if test x$gcc_cv_ld != x \
3787 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3788 gcc_cv_as_ix86_pe_secrel32=yes
3791 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3792 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3793 # Test if the assembler supports the extended form of the .section
3794 # directive that specifies section alignment. LTO support uses this,
3795 # but normally only after installation, so we warn but don't fail the
3796 # configure if LTO is enabled but the assembler does not support it.
3797 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3798 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3799 if test x$gcc_cv_as_section_has_align != xyes; then
3800 case ",$enable_languages," in
3802 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3806 # Test if the assembler supports the section flag 'e' for specifying
3807 # an excluded section.
3808 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3812 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3813 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3814 [Define if your assembler supports specifying the section flag e.])
3818 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3819 gcc_cv_as_ix86_filds,,,
3820 [filds mem; fists mem],,
3821 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3822 [Define if your assembler uses filds and fists mnemonics.])])
3824 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3825 gcc_cv_as_ix86_fildq,,,
3826 [fildq mem; fistpq mem],,
3827 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3828 [Define if your assembler uses fildq and fistq mnemonics.])])
3830 gcc_GAS_CHECK_FEATURE([cmov syntax],
3831 gcc_cv_as_ix86_cmov_sun_syntax,,,
3832 [cmovl.l %edx, %eax],,
3833 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3834 [Define if your assembler supports the Sun syntax for cmov.])])
3836 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3837 gcc_cv_as_ix86_ffreep,,,
3839 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3840 [Define if your assembler supports the ffreep mnemonic.])])
3842 gcc_GAS_CHECK_FEATURE([.quad directive],
3843 gcc_cv_as_ix86_quad,,,
3845 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3846 [Define if your assembler supports the .quad directive.])])
3848 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3849 gcc_cv_as_ix86_sahf,,,
3852 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3853 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3855 gcc_GAS_CHECK_FEATURE([hle prefixes],
3856 gcc_cv_as_ix86_hle,,,
3857 [lock xacquire cmpxchg %esi, (%ecx)],,
3858 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3859 [Define if your assembler supports HLE prefixes.])])
3861 gcc_GAS_CHECK_FEATURE([swap suffix],
3862 gcc_cv_as_ix86_swap,,,
3863 [movl.s %esp, %ebp],,
3864 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3865 [Define if your assembler supports the swap suffix.])])
3867 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3868 gcc_cv_as_ix86_diff_sect_delta,,,
3876 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3877 [Define if your assembler supports the subtraction of symbols in different sections.])])
3879 # These two are used unconditionally by i386.[ch]; it is to be defined
3880 # to 1 if the feature is present, 0 otherwise.
3881 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3882 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3888 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3889 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3890 [Define true if the assembler supports '.long foo@GOTOFF'.])
3892 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3893 gcc_cv_as_ix86_rep_lock_prefix,,,
3899 lock addl %edi, (%eax,%esi)
3900 lock orl $0, (%esp)],,
3901 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3902 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3904 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3905 gcc_cv_as_ix86_tlsgdplt,,,
3906 [call tls_gd@tlsgdplt],
3907 [if test x$gcc_cv_ld != x \
3908 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3909 gcc_cv_as_ix86_tlsgdplt=yes
3912 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3913 [Define if your assembler and linker support @tlsgdplt.])])
3915 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3916 gcc_cv_as_ix86_tlsldmplt,,,
3918 call tls_ld@tlsldmplt],
3919 [if test x$gcc_cv_ld != x \
3920 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3921 gcc_cv_as_ix86_tlsldmplt=yes
3924 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3925 [Define if your assembler and linker support @tlsldmplt.])])
3930 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3931 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3933 addl r15 = @ltoffx(x#), gp
3935 ld8.mov r16 = [[r15]], x#],,
3936 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3937 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3943 *-*-aix*) conftest_s=' .machine "pwr5"
3947 gcc_GAS_CHECK_FEATURE([.machine directive support],
3948 gcc_cv_as_machine_directive,,,
3949 [ .machine ppc7400])
3950 if test x$gcc_cv_as_machine_directive != xyes; then
3951 echo "*** This target requires an assembler supporting \".machine\"" >&2
3952 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3953 test x$build = x$target && exit 1
3957 *) conftest_s=' .machine power4
3962 gcc_GAS_CHECK_FEATURE([mfcr field support],
3963 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3965 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3966 [Define if your assembler supports mfcr field.])])
3969 *-*-aix*) conftest_s=' .machine "pwr5"
3972 *) conftest_s=' .machine power5
3977 gcc_GAS_CHECK_FEATURE([popcntb support],
3978 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3980 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3981 [Define if your assembler supports popcntb field.])])
3984 *-*-aix*) conftest_s=' .machine "pwr5x"
3987 *) conftest_s=' .machine power5
3992 gcc_GAS_CHECK_FEATURE([fp round support],
3993 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3995 [AC_DEFINE(HAVE_AS_FPRND, 1,
3996 [Define if your assembler supports fprnd.])])
3999 *-*-aix*) conftest_s=' .machine "pwr6"
4002 *) conftest_s=' .machine power6
4007 gcc_GAS_CHECK_FEATURE([move fp gpr support],
4008 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4010 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4011 [Define if your assembler supports mffgpr and mftgpr.])])
4014 *-*-aix*) conftest_s=' .csect .text[[PR]]
4016 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4020 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4021 *) conftest_s=' .text
4023 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4026 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4027 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4029 [AC_DEFINE(HAVE_AS_REL16, 1,
4030 [Define if your assembler supports R_PPC_REL16 relocs.])])
4033 *-*-aix*) conftest_s=' .machine "pwr6"
4036 *) conftest_s=' .machine power6
4041 gcc_GAS_CHECK_FEATURE([compare bytes support],
4042 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4044 [AC_DEFINE(HAVE_AS_CMPB, 1,
4045 [Define if your assembler supports cmpb.])])
4048 *-*-aix*) conftest_s=' .machine "pwr6"
4051 *) conftest_s=' .machine power6
4056 gcc_GAS_CHECK_FEATURE([decimal float support],
4057 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4059 [AC_DEFINE(HAVE_AS_DFP, 1,
4060 [Define if your assembler supports DFP instructions.])])
4063 *-*-aix*) conftest_s=' .machine "pwr7"
4066 *) conftest_s=' .machine power7
4071 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4072 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4074 [AC_DEFINE(HAVE_AS_VSX, 1,
4075 [Define if your assembler supports VSX instructions.])])
4078 *-*-aix*) conftest_s=' .machine "pwr7"
4081 *) conftest_s=' .machine power7
4086 gcc_GAS_CHECK_FEATURE([popcntd support],
4087 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4089 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4090 [Define if your assembler supports POPCNTD instructions.])])
4093 *-*-aix*) conftest_s=' .machine "pwr8"
4094 .csect .text[[PR]]';;
4095 *) conftest_s=' .machine power8
4099 gcc_GAS_CHECK_FEATURE([power8 support],
4100 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4102 [AC_DEFINE(HAVE_AS_POWER8, 1,
4103 [Define if your assembler supports POWER8 instructions.])])
4106 *-*-aix*) conftest_s=' .csect .text[[PR]]
4108 *) conftest_s=' .text
4112 gcc_GAS_CHECK_FEATURE([lwsync support],
4113 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4115 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4116 [Define if your assembler supports LWSYNC instructions.])])
4119 *-*-aix*) conftest_s=' .machine "476"
4122 *) conftest_s=' .machine "476"
4127 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4128 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4130 [AC_DEFINE(HAVE_AS_DCI, 1,
4131 [Define if your assembler supports the DCI/ICI instructions.])])
4133 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4134 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4135 [.gnu_attribute 4,1],,
4136 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4137 [Define if your assembler supports .gnu_attribute.])])
4139 gcc_GAS_CHECK_FEATURE([tls marker support],
4140 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4141 [ bl __tls_get_addr(x@tlsgd)],,
4142 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4143 [Define if your assembler supports arg info for __tls_get_addr.])])
4147 gcc_GAS_CHECK_FEATURE([.ref support],
4148 gcc_cv_as_aix_ref, [2,21,0],,
4149 [ .csect stuff[[rw]]
4155 [AC_DEFINE(HAVE_AS_REF, 1,
4156 [Define if your assembler supports .ref])])
4162 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4163 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4164 [ lw $4,%gp_rel(foo)($4)],,
4165 [if test x$target_cpu_default = x
4166 then target_cpu_default=MASK_EXPLICIT_RELOCS
4167 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4169 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4170 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4171 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4172 [Define if the assembler understands -mno-shared.])])
4174 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4175 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4176 [.gnu_attribute 4,1],,
4177 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4178 [Define if your assembler supports .gnu_attribute.])])
4180 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4181 gcc_cv_as_mips_dtprelword, [2,18,0],,
4182 [.section .tdata,"awT",@progbits
4186 .dtprelword x+0x8000],,
4187 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4188 [Define if your assembler supports .dtprelword.])])
4190 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4191 gcc_cv_as_mips_dspr1_mult,,,
4201 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4202 [Define if your assembler supports DSPR1 mult.])])
4204 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4205 gcc_cv_as_ld_jalr_reloc=no
4206 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4207 if test $in_tree_ld = yes ; then
4208 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4209 && test $in_tree_ld_is_elf = yes; then
4210 gcc_cv_as_ld_jalr_reloc=yes
4212 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4213 echo ' .ent x' > conftest.s
4214 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4215 echo ' ld $25,%call16(y)($28)' >> conftest.s
4216 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4217 echo '1: jalr $25' >> conftest.s
4218 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4219 echo '1: jalr $25' >> conftest.s
4220 echo ' .end x' >> conftest.s
4221 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4222 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4223 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4224 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4225 gcc_cv_as_ld_jalr_reloc=yes
4231 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4232 if test x$target_cpu_default = x; then
4233 target_cpu_default=MASK_RELAX_PIC_CALLS
4235 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4238 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4240 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4241 [gcc_cv_ld_mips_personality_relaxation],
4242 [gcc_cv_ld_mips_personality_relaxation=no
4243 if test $in_tree_ld = yes ; then
4244 if test "$gcc_cv_gld_major_version" -eq 2 \
4245 -a "$gcc_cv_gld_minor_version" -ge 21 \
4246 -o "$gcc_cv_gld_major_version" -gt 2; then
4247 gcc_cv_ld_mips_personality_relaxation=yes
4249 elif test x$gcc_cv_as != x \
4250 -a x$gcc_cv_ld != x \
4251 -a x$gcc_cv_readelf != x ; then
4252 cat > conftest.s <<EOF
4254 .cfi_personality 0x80,indirect_ptr
4261 .section .data,"aw",@progbits
4265 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4266 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4267 if $gcc_cv_readelf -d conftest 2>&1 \
4268 | grep TEXTREL > /dev/null 2>&1; then
4270 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4271 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4274 gcc_cv_ld_mips_personality_relaxation=yes
4278 rm -f conftest.s conftest.o conftest])
4279 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4280 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4281 [Define if your linker can relax absolute .eh_frame personality
4282 pointers into PC-relative form.])
4287 # Mips and HP-UX need the GNU assembler.
4288 # Linux on IA64 might be able to use the Intel assembler.
4291 mips*-*-* | *-*-hpux* )
4292 if test x$gas_flag = xyes \
4293 || test x"$host" != x"$build" \
4294 || test ! -x "$gcc_cv_as" \
4295 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4298 echo "*** This configuration requires the GNU assembler" >&2
4304 # ??? Not all targets support dwarf2 debug_line, even within a version
4305 # of gas. Moreover, we need to emit a valid instruction to trigger any
4306 # info to the output file. So, as supported targets are added to gas 2.11,
4307 # add some instruction here to (also) show we expect this might work.
4308 # ??? Once 2.11 is released, probably need to add first known working
4309 # version to the per-target configury.
4311 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4312 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4322 if test x"$insn" != x; then
4324 .file 1 \"conftest.s\"
4327 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4328 gcc_cv_as_dwarf2_debug_line,
4329 [elf,2,11,0],, [$conftest_s],
4330 [if test x$gcc_cv_objdump != x \
4331 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4332 | grep debug_line > /dev/null 2>&1; then
4333 gcc_cv_as_dwarf2_debug_line=yes
4336 # The .debug_line file table must be in the exact order that
4337 # we specified the files, since these indices are also used
4338 # by DW_AT_decl_file. Approximate this test by testing if
4339 # the assembler bitches if the same index is assigned twice.
4340 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4341 gcc_cv_as_dwarf2_file_buggy,,,
4345 if test $gcc_cv_as_dwarf2_debug_line = yes \
4346 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4347 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4348 [Define if your assembler supports dwarf2 .file/.loc directives,
4349 and preserves file table indices exactly as given.])
4352 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4353 gcc_cv_as_gdwarf2_flag,
4354 [elf,2,11,0], [--gdwarf2], [$insn],,
4355 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4356 [Define if your assembler supports the --gdwarf2 option.])])
4358 gcc_GAS_CHECK_FEATURE([--gstabs option],
4359 gcc_cv_as_gstabs_flag,
4360 [elf,2,11,0], [--gstabs], [$insn],
4361 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4362 # and warns about it, but still exits successfully. So check for
4364 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4366 else gcc_cv_as_gstabs_flag=yes
4368 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4369 [Define if your assembler supports the --gstabs option.])])
4371 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4372 gcc_cv_as_debug_prefix_map_flag,
4373 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4374 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4375 [Define if your assembler supports the --debug-prefix-map option.])])
4378 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4381 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4382 [Define if your assembler supports .lcomm with an alignment field.])])
4384 AC_ARG_ENABLE(gnu-unique-object,
4385 [AS_HELP_STRING([--enable-gnu-unique-object],
4386 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4387 [case $enable_gnu_unique_object in
4389 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4390 Valid choices are 'yes' and 'no'.]) ;;
4392 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4394 [.type foo, '$target_type_format_char'gnu_unique_object],,
4395 # We need to unquote above to to use the definition from config.gcc.
4396 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4397 [[if test x$host = x$build -a x$host = x$target &&
4398 ldd --version 2>/dev/null &&
4399 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4400 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4401 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4402 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4403 if test "$glibcnum" -ge 2011 ; then
4404 enable_gnu_unique_object=yes
4407 if test x$enable_gnu_unique_object = xyes; then
4408 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4409 [Define if your assembler supports @gnu_unique_object.])
4412 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4413 [gcc_cv_as_line_zero],
4414 [gcc_cv_as_line_zero=no
4415 if test $in_tree_gas = yes; then
4416 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4417 elif test "x$gcc_cv_as" != x; then
4418 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4419 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4420 test "x`cat conftest.out`" = x
4422 gcc_cv_as_line_zero=yes
4424 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4425 cat conftest.s >&AS_MESSAGE_LOG_FD
4426 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4427 cat conftest.out >&AS_MESSAGE_LOG_FD
4429 rm -f conftest.o conftest.s conftest.out
4431 if test "x$gcc_cv_as_line_zero" = xyes; then
4432 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4433 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4436 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4437 gcc_cv_ld_eh_frame_hdr=no
4438 if test $in_tree_ld = yes ; then
4439 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4440 && test $in_tree_ld_is_elf = yes; then
4441 gcc_cv_ld_eh_frame_hdr=yes
4443 elif test x$gcc_cv_ld != x; then
4444 if echo "$ld_ver" | grep GNU > /dev/null; then
4445 # Check if linker supports --eh-frame-hdr option
4446 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4447 gcc_cv_ld_eh_frame_hdr=yes
4452 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4453 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4454 gcc_cv_ld_eh_frame_hdr=yes
4460 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4461 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4462 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4463 [Define if your linker supports .eh_frame_hdr.])
4465 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4467 AC_MSG_CHECKING(linker position independent executable support)
4469 if test $in_tree_ld = yes ; then
4470 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4471 && test $in_tree_ld_is_elf = yes; then
4474 elif test x$gcc_cv_ld != x; then
4475 # Check if linker supports -pie option
4476 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4480 if test x"$gcc_cv_ld_pie" = xyes; then
4481 AC_DEFINE(HAVE_LD_PIE, 1,
4482 [Define if your linker supports -pie option.])
4484 AC_MSG_RESULT($gcc_cv_ld_pie)
4486 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4487 gcc_cv_ld_eh_gc_sections=no
4488 if test $in_tree_ld = yes ; then
4489 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4490 && test $in_tree_ld_is_elf = yes; then
4491 gcc_cv_ld_eh_gc_sections=yes
4493 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4494 cat > conftest.s <<EOF
4497 .type _start, @function
4500 .size _start, .-_start
4501 .section .text.foo,"ax",@progbits
4502 .type foo, @function
4506 .section .gcc_except_table.foo,"a",@progbits
4509 .section .eh_frame,"a",@progbits
4512 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4513 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4514 | grep "gc-sections option ignored" > /dev/null; then
4515 gcc_cv_ld_eh_gc_sections=no
4516 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4517 | grep gcc_except_table > /dev/null; then
4518 gcc_cv_ld_eh_gc_sections=yes
4519 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4520 if test x$gcc_cv_as_comdat_group != xyes; then
4521 gcc_cv_ld_eh_gc_sections=no
4522 cat > conftest.s <<EOF
4525 .type _start, @function
4528 .size _start, .-_start
4529 .section .gnu.linkonce.t.foo,"ax",@progbits
4530 .type foo, @function
4534 .section .gcc_except_table.foo,"a",@progbits
4537 .section .eh_frame,"a",@progbits
4540 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4541 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4542 | grep "gc-sections option ignored" > /dev/null; then
4543 gcc_cv_ld_eh_gc_sections=no
4544 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4545 | grep gcc_except_table > /dev/null; then
4546 gcc_cv_ld_eh_gc_sections=yes
4552 rm -f conftest.s conftest.o conftest
4556 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4557 gcc_cv_ld_eh_gc_sections=no
4560 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4561 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4562 [Define if your linker supports garbage collection of
4563 sections in presence of EH frames.])
4565 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4567 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4568 gcc_cv_ld_eh_gc_sections_bug=no
4569 if test $in_tree_ld = yes ; then
4570 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4571 && test $in_tree_ld_is_elf = yes; then
4572 gcc_cv_ld_eh_gc_sections_bug=yes
4574 elif test x$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
4575 gcc_cv_ld_eh_gc_sections_bug=yes
4576 cat > conftest.s <<EOF
4579 .type _start, @function
4582 .size _start, .-_start
4583 .section .text.startup.foo,"ax",@progbits
4584 .type foo, @function
4588 .section .gcc_except_table.foo,"a",@progbits
4591 .section .eh_frame,"a",@progbits
4594 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4595 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4596 | grep "gc-sections option ignored" > /dev/null; then
4598 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4599 | grep gcc_except_table > /dev/null; then
4600 gcc_cv_ld_eh_gc_sections_bug=no
4603 rm -f conftest.s conftest.o conftest
4605 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4606 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4607 [Define if your linker has buggy garbage collection of
4608 sections support when .text.startup.foo like sections are used.])
4610 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4616 AC_CACHE_CHECK(linker --as-needed support,
4617 gcc_cv_ld_as_needed,
4618 [gcc_cv_ld_as_needed=no
4619 if test $in_tree_ld = yes ; then
4620 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4621 && test $in_tree_ld_is_elf = yes; then
4622 gcc_cv_ld_as_needed=yes
4624 elif test x$gcc_cv_ld != x; then
4625 # Check if linker supports --as-needed and --no-as-needed options
4626 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4627 gcc_cv_ld_as_needed=yes
4631 if test x"$gcc_cv_ld_as_needed" = xyes; then
4632 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4633 [Define if your linker supports --as-needed and --no-as-needed options.])
4636 case "$target:$tm_file" in
4637 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4640 emul_name="-melf64ppc"
4643 emul_name="-melf64ppc_fbsd"
4646 AC_CACHE_CHECK(linker support for omitting dot symbols,
4647 gcc_cv_ld_no_dot_syms,
4648 [gcc_cv_ld_no_dot_syms=no
4649 if test x"$ld_is_gold" = xyes; then
4650 gcc_cv_ld_no_dot_syms=yes
4651 elif test $in_tree_ld = yes ; then
4652 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4653 gcc_cv_ld_no_dot_syms=yes
4655 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4656 cat > conftest1.s <<EOF
4660 cat > conftest2.s <<EOF
4661 .section ".opd","aw"
4666 .quad .LEfoo,.TOC.@tocbase,0
4672 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4673 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4674 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4675 gcc_cv_ld_no_dot_syms=yes
4677 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4680 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4681 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4682 [Define if your PowerPC64 linker only needs function descriptor syms.])
4685 AC_CACHE_CHECK(linker large toc support,
4686 gcc_cv_ld_large_toc,
4687 [gcc_cv_ld_large_toc=no
4688 if test x"$ld_is_gold" = xyes; then
4689 gcc_cv_ld_large_toc=yes
4690 elif test $in_tree_ld = yes ; then
4691 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4692 gcc_cv_ld_large_toc=yes
4694 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4695 cat > conftest.s <<EOF
4696 .section ".tbss","awT",@nobits
4702 addis 9,13,ie0@got@tprel@ha
4703 ld 9,ie0@got@tprel@l(9)
4705 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4706 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4707 gcc_cv_ld_large_toc=yes
4709 rm -f conftest conftest.o conftest.s
4712 if test x"$gcc_cv_ld_large_toc" = xyes; then
4713 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4714 [Define if your PowerPC64 linker supports a large TOC.])
4721 AC_CACHE_CHECK(linker large toc support,
4722 gcc_cv_ld_large_toc,
4723 [gcc_cv_ld_large_toc=no
4724 if test x$gcc_cv_as != x ; then
4725 cat > conftest.s <<EOF
4735 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4736 gcc_cv_ld_large_toc=yes
4738 rm -f conftest conftest.o conftest.s
4741 if test x"$gcc_cv_ld_large_toc" = xyes; then
4742 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4743 [Define if your AIX linker supports a large TOC.])
4748 AC_CACHE_CHECK(linker --build-id support,
4750 [gcc_cv_ld_buildid=no
4751 if test $in_tree_ld = yes ; then
4752 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4753 "$gcc_cv_gld_minor_version" -ge 18 -o \
4754 "$gcc_cv_gld_major_version" -gt 2 \
4755 && test $in_tree_ld_is_elf = yes; then
4756 gcc_cv_ld_buildid=yes
4758 elif test x$gcc_cv_ld != x; then
4759 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4760 gcc_cv_ld_buildid=yes
4763 if test x"$gcc_cv_ld_buildid" = xyes; then
4764 AC_DEFINE(HAVE_LD_BUILDID, 1,
4765 [Define if your linker supports --build-id.])
4768 AC_ARG_ENABLE(linker-build-id,
4769 [AS_HELP_STRING([--enable-linker-build-id],
4770 [compiler will always pass --build-id to linker])],
4772 enable_linker_build_id=no)
4774 if test x"$enable_linker_build_id" = xyes; then
4775 if test x"$gcc_cv_ld_buildid" = xyes; then
4776 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4777 [Define if gcc should always pass --build-id to linker.])
4779 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4783 # In binutils 2.21, GNU ld gained support for new emulations fully
4784 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4785 AC_CACHE_CHECK(linker *_sol2 emulation support,
4786 gcc_cv_ld_sol2_emulation,
4787 [gcc_cv_ld_sol2_emulation=no
4788 if test $in_tree_ld = yes ; then
4789 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4790 "$gcc_cv_gld_minor_version" -ge 21 -o \
4791 "$gcc_cv_gld_major_version" -gt 2 \
4792 && test $in_tree_ld_is_elf = yes; then
4793 gcc_cv_ld_sol2_emulation=yes
4795 elif test x$gcc_cv_ld != x; then
4796 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4797 grep _sol2 > /dev/null; then
4798 gcc_cv_ld_sol2_emulation=yes
4801 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4802 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4803 [Define if your linker supports the *_sol2 emulations.])
4806 AC_CACHE_CHECK(linker --sysroot support,
4808 [gcc_cv_ld_sysroot=no
4809 if test $in_tree_ld = yes ; then
4810 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4811 gcc_cv_ld_sysroot=yes
4813 elif test x$gcc_cv_ld != x; then
4814 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4815 gcc_cv_ld_sysroot=yes
4818 if test x"$gcc_cv_ld_sysroot" = xyes; then
4819 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4820 [Define if your linker supports --sysroot.])
4823 if test x$with_sysroot = x && test x$host = x$target \
4824 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4825 && test "$prefix" != "NONE"; then
4826 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4827 [Define to PREFIX/include if cpp should also search that directory.])
4830 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4831 if test "x$with_headers" != x; then
4832 target_header_dir=$with_headers
4833 elif test "x$with_sysroot" = x; then
4834 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4835 elif test "x$with_build_sysroot" != "x"; then
4836 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4837 elif test "x$with_sysroot" = xyes; then
4838 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4840 target_header_dir="${with_sysroot}${native_system_header_dir}"
4843 target_header_dir=${native_system_header_dir}
4846 # Test for stack protector support in target C library.
4847 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4848 gcc_cv_libc_provides_ssp,
4849 [gcc_cv_libc_provides_ssp=no
4851 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4852 [# glibc 2.4 and later provides __stack_chk_fail and
4853 # either __stack_chk_guard, or TLS access to stack guard canary.
4854 if test -f $target_header_dir/features.h \
4855 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4856 $target_header_dir/features.h > /dev/null; then
4857 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4858 $target_header_dir/features.h > /dev/null; then
4859 gcc_cv_libc_provides_ssp=yes
4860 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4861 $target_header_dir/features.h > /dev/null \
4862 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4863 $target_header_dir/features.h > /dev/null; then
4864 gcc_cv_libc_provides_ssp=yes
4865 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4866 $target_header_dir/features.h > /dev/null && \
4867 test -f $target_header_dir/bits/uClibc_config.h && \
4868 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4869 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4870 gcc_cv_libc_provides_ssp=yes
4872 # all versions of Bionic support stack protector
4873 elif test -f $target_header_dir/sys/cdefs.h \
4874 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4875 $target_header_dir/sys/cdefs.h > /dev/null; then
4876 gcc_cv_libc_provides_ssp=yes
4880 # Avoid complicated tests (see
4881 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4882 # simply assert that glibc does provide this, which is true for all
4883 # realistically usable GNU/Hurd configurations.
4884 gcc_cv_libc_provides_ssp=yes;;
4885 *-*-darwin* | *-*-freebsd*)
4886 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4887 [echo "no __stack_chk_fail on this target"])
4889 *) gcc_cv_libc_provides_ssp=no ;;
4892 if test x$gcc_cv_libc_provides_ssp = xyes; then
4893 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4894 [Define if your target C library provides stack protector support])
4897 # Test for <sys/sdt.h> on the target.
4898 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4899 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4901 if test -f $target_header_dir/sys/sdt.h; then
4903 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4904 [Define if your target C library provides sys/sdt.h])
4906 AC_MSG_RESULT($have_sys_sdt_h)
4908 # Check if TFmode long double should be used by default or not.
4909 # Some glibc targets used DFmode long double, but with glibc 2.4
4910 # and later they can use TFmode.
4912 powerpc*-*-linux* | \
4916 AC_ARG_WITH(long-double-128,
4917 [AS_HELP_STRING([--with-long-double-128],
4918 [use 128-bit long double by default])],
4919 gcc_cv_target_ldbl128="$with_long_double_128",
4920 [[gcc_cv_target_ldbl128=no
4921 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4922 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4923 && gcc_cv_target_ldbl128=yes
4927 if test x$gcc_cv_target_ldbl128 = xyes; then
4928 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4929 [Define if TFmode long double should be the default])
4932 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4933 gcc_cv_target_dl_iterate_phdr=unknown
4935 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4936 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4937 # libdl there, both complicating its use and breaking compatibility
4938 # between Solaris 10 updates.
4939 *-*-solaris2.1[[1-9]]*)
4940 # <link.h> needs both a dl_iterate_phdr declaration and support for
4941 # compilation with largefile support.
4942 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4943 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4944 gcc_cv_target_dl_iterate_phdr=yes
4946 gcc_cv_target_dl_iterate_phdr=no
4950 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4951 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4952 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4953 [Define if your target C library provides the `dl_iterate_phdr' function.])
4955 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4957 # Find out what GC implementation we want, or may, use.
4959 [AS_HELP_STRING([--with-gc={page,zone}],
4960 [choose the garbage collection mechanism to use
4961 with the compiler])],
4968 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4971 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4976 echo "Using $GGC for garbage collection."
4978 # Libraries to use on the host. This will normally be set by the top
4979 # level Makefile. Here we simply capture the value for our Makefile.
4980 if test -z "${HOST_LIBS+set}"; then
4985 # Use the system's zlib library.
4987 zlibinc="-I\$(srcdir)/../zlib"
4988 AC_ARG_WITH(system-zlib,
4989 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4996 dnl Very limited version of automake's enable-maintainer-mode
4998 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4999 dnl maintainer-mode is disabled by default
5000 AC_ARG_ENABLE(maintainer-mode,
5001 [AS_HELP_STRING([--enable-maintainer-mode],
5002 [enable make rules and dependencies not useful
5003 (and sometimes confusing) to the casual installer])],
5004 maintainer_mode=$enableval,
5007 AC_MSG_RESULT($maintainer_mode)
5009 if test "$maintainer_mode" = "yes"; then
5020 # Make empty files to contain the specs and options for each language.
5021 # Then add #include lines to for a compiler that has specs and/or options.
5027 # These (without "all_") are set in each config-lang.in.
5028 # `language' must be a single word so is spelled singularly.
5031 all_outputs='Makefile'
5032 # List of language makefile fragments.
5034 # Additional files for gengtype
5035 all_gtfiles="$target_gtfiles"
5037 # These are the languages that are set in --enable-languages,
5038 # and are available in the GCC tree.
5039 all_selected_languages=
5041 # Add the language fragments.
5042 # Languages are added via two mechanisms. Some information must be
5043 # recorded in makefile variables, these are defined in config-lang.in.
5044 # We accumulate them and plug them into the main Makefile.
5045 # The other mechanism is a set of hooks for each of the main targets
5046 # like `clean', `install', etc.
5048 language_hooks="Make-hooks"
5050 for lang in ${srcdir}/*/config-lang.in
5053 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5055 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5056 if test "x$lang_alias" = x
5058 echo "$lang doesn't set \$language." 1>&2
5061 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5062 subdirs="$subdirs $subdir"
5064 # $gcc_subdir is where the gcc integration files are to be found
5065 # for a language, both for internal compiler purposes (compiler
5066 # sources implementing front-end to GCC tree converters), and for
5067 # build infrastructure purposes (Make-lang.in, etc.)
5069 # This will be <subdir> (relative to $srcdir) if a line like
5070 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5071 # is found in <langdir>/config-lang.in, and will remain <langdir>
5074 # Except for the language alias (fetched above), the regular
5075 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5076 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5077 # only this and the language alias.
5079 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5080 if [ "$gcc_subdir" = "" ]; then
5081 gcc_subdir="$subdir"
5084 case ",$enable_languages," in
5086 all_selected_languages="$all_selected_languages $lang_alias"
5087 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5088 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5100 . ${srcdir}/$gcc_subdir/config-lang.in
5101 if test "x$language" = x
5103 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5108 case ",$enable_languages," in
5111 for i in $subdir_requires; do
5112 test -f "${srcdir}/$i/config-lang.in" && continue
5120 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5121 if test -f $srcdir/$gcc_subdir/lang.opt; then
5122 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5123 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5125 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5126 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5128 all_languages="$all_languages $language"
5129 all_compilers="$all_compilers $compilers"
5130 all_outputs="$all_outputs $outputs"
5131 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5132 case ",$enable_languages," in
5134 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5136 AC_SUBST(enable_lto)
5143 for language in $all_selected_languages
5145 check_languages="$check_languages check-$language"
5148 # We link each language in with a set of hooks, reached indirectly via
5149 # lang.${target}. Only do so for selected languages.
5153 target_list="all.cross start.encap rest.encap tags \
5154 install-common install-man install-info install-pdf install-html dvi \
5155 pdf html uninstall info man srcextra srcman srcinfo \
5156 mostlyclean clean distclean maintainer-clean install-plugin"
5158 for t in $target_list
5161 for lang in $all_selected_languages
5165 echo "lang.$t: $x" >> Make-hooks
5169 # Option include files
5172 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5173 option_includes="option-includes.mk"
5174 AC_SUBST_FILE(option_includes)
5182 echo "dir ." > .gdbinit
5183 echo "dir ${srcdir}" >> .gdbinit
5184 if test x$gdb_needs_out_file_path = xyes
5186 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5188 if test "x$subdirs" != x; then
5191 echo "dir ${srcdir}/$s" >> .gdbinit
5194 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5196 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5197 AC_SUBST(gcc_tooldir)
5200 # Find a directory in which to install a shared libgcc.
5202 AC_ARG_ENABLE(version-specific-runtime-libs,
5203 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5204 [specify that runtime libraries should be
5205 installed in a compiler-specific directory])])
5207 # Substitute configuration variables
5210 AC_SUBST(all_compilers)
5211 AC_SUBST(all_gtfiles)
5212 AC_SUBST(all_lang_makefrags)
5213 AC_SUBST(all_languages)
5214 AC_SUBST(all_selected_languages)
5215 AC_SUBST(build_exeext)
5216 AC_SUBST(build_install_headers_dir)
5217 AC_SUBST(build_xm_file_list)
5218 AC_SUBST(build_xm_include_list)
5219 AC_SUBST(build_xm_defines)
5220 AC_SUBST(build_file_translate)
5221 AC_SUBST(check_languages)
5222 AC_SUBST(cpp_install_dir)
5223 AC_SUBST(xmake_file)
5224 AC_SUBST(tmake_file)
5225 AC_SUBST(TM_ENDIAN_CONFIG)
5226 AC_SUBST(TM_MULTILIB_CONFIG)
5227 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5228 AC_SUBST(extra_gcc_objs)
5229 AC_SUBST(user_headers_inc_next_pre)
5230 AC_SUBST(user_headers_inc_next_post)
5231 AC_SUBST(extra_headers_list)
5232 AC_SUBST(extra_objs)
5233 AC_SUBST(extra_programs)
5234 AC_SUBST(float_h_file)
5235 AC_SUBST(gcc_config_arguments)
5236 AC_SUBST(gcc_gxx_include_dir)
5237 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5238 AC_SUBST(host_exeext)
5239 AC_SUBST(host_xm_file_list)
5240 AC_SUBST(host_xm_include_list)
5241 AC_SUBST(host_xm_defines)
5242 AC_SUBST(out_host_hook_obj)
5244 AC_SUBST(lang_opt_files)
5245 AC_SUBST(lang_specs_files)
5246 AC_SUBST(lang_tree_files)
5247 AC_SUBST(local_prefix)
5249 AC_SUBST(objc_boehm_gc)
5251 AC_SUBST(out_object_file)
5252 AC_SUBST(common_out_file)
5253 AC_SUBST(common_out_object_file)
5254 AC_SUBST(tm_file_list)
5255 AC_SUBST(tm_include_list)
5256 AC_SUBST(tm_defines)
5257 AC_SUBST(tm_p_file_list)
5258 AC_SUBST(tm_p_include_list)
5259 AC_SUBST(xm_file_list)
5260 AC_SUBST(xm_include_list)
5261 AC_SUBST(xm_defines)
5262 AC_SUBST(use_gcc_stdint)
5263 AC_SUBST(c_target_objs)
5264 AC_SUBST(cxx_target_objs)
5265 AC_SUBST(fortran_target_objs)
5266 AC_SUBST(target_cpu_default)
5268 AC_SUBST_FILE(language_hooks)
5271 if test x${build} = x${host} ; then
5272 if test x${host} = x${target} ; then
5273 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5275 echo "Links are now set up to build a cross-compiler" 1>&2
5276 echo " from ${host} to ${target}." 1>&2
5279 if test x${host} = x${target} ; then
5280 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5281 echo " for ${target}." 1>&2
5283 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5284 echo " from ${host} to ${target}." 1>&2
5288 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5289 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5291 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5292 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5294 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5295 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5296 if test "x${CLOOGLIBS}" != "x" ; then
5297 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5300 # Check for plugin support
5301 AC_ARG_ENABLE(plugin,
5302 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5303 enable_plugin=$enableval,
5304 enable_plugin=yes; default_plugin=yes)
5310 if test x$build = x$host; then
5311 export_sym_check="nm${exeext} -g"
5312 elif test x$host = x$target; then
5313 export_sym_check="$gcc_cv_nm -g"
5319 if test x$build = x$host; then
5320 export_sym_check="objdump${exeext} -T"
5321 elif test x$host = x$target; then
5322 export_sym_check="$gcc_cv_objdump -T"
5329 if test x"$enable_plugin" = x"yes"; then
5331 AC_MSG_CHECKING([for exported symbols])
5332 if test "x$export_sym_check" != x; then
5333 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5334 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5335 if $export_sym_check conftest | grep foobar > /dev/null; then
5336 : # No need to use a flag
5337 AC_MSG_RESULT([yes])
5339 AC_MSG_RESULT([yes])
5340 AC_MSG_CHECKING([for -rdynamic])
5341 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5342 if $export_sym_check conftest | grep foobar > /dev/null; then
5344 pluginlibs="-rdynamic"
5349 AC_MSG_RESULT([$plugin_rdynamic])
5352 AC_MSG_RESULT([unable to check])
5357 AC_SEARCH_LIBS([dlopen], [dl])
5358 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5359 pluginlibs="$pluginlibs -ldl"
5363 # Check that we can build shared objects with -fPIC -shared
5364 saved_LDFLAGS="$LDFLAGS"
5365 saved_CFLAGS="$CFLAGS"
5368 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5369 CFLAGS="$CFLAGS -fPIC"
5370 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5373 CFLAGS="$CFLAGS -fPIC"
5374 LDFLAGS="$LDFLAGS -fPIC -shared"
5377 AC_MSG_CHECKING([for -fPIC -shared])
5379 [extern int X;],[return X == 0;],
5380 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5381 [AC_MSG_RESULT([no]); have_pic_shared=no])
5382 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5386 LDFLAGS="$saved_LDFLAGS"
5387 CFLAGS="$saved_CFLAGS"
5389 # If plugin support had been requested but not available, fail.
5390 if test x"$enable_plugin" = x"no" ; then
5391 if test x"$default_plugin" != x"yes"; then
5393 Building GCC with plugin support requires a host that supports
5394 -fPIC, -shared, -ldl and -rdynamic.])
5399 AC_SUBST(pluginlibs)
5400 AC_SUBST(enable_plugin)
5401 if test x"$enable_plugin" = x"yes"; then
5402 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5406 AC_ARG_ENABLE(libquadmath-support,
5407 [AS_HELP_STRING([--disable-libquadmath-support],
5408 [disable libquadmath support for Fortran])],
5409 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5410 ENABLE_LIBQUADMATH_SUPPORT=yes)
5411 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5412 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5413 [Define to 1 to enable libquadmath support])
5417 # Specify what hash style to use by default.
5418 AC_ARG_WITH([linker-hash-style],
5419 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5420 [specify the linker hash style])],
5421 [case x"$withval" in
5423 LINKER_HASH_STYLE=sysv
5426 LINKER_HASH_STYLE=gnu
5429 LINKER_HASH_STYLE=both
5432 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5435 [LINKER_HASH_STYLE=''])
5436 if test x"${LINKER_HASH_STYLE}" != x; then
5437 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5438 [The linker hash style])
5441 # Configure the subdirectories
5442 # AC_CONFIG_SUBDIRS($subdirs)
5444 # Create the Makefile
5445 # and configure language subdirectories
5446 AC_CONFIG_FILES($all_outputs)
5448 AC_CONFIG_COMMANDS([default],
5450 case ${CONFIG_HEADERS} in
5451 *auto-host.h:config.in*)
5454 # Make sure all the subdirs exist.
5455 for d in $subdirs doc build common c-family
5457 test -d $d || mkdir $d
5460 [subdirs='$subdirs'])