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 "s/-O[[s0-9]]* *//" `
300 CXXFLAGS=`echo $CXXFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
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])), [noexception_flags])
370 # Enable expensive internal checks
372 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
376 AC_ARG_ENABLE(checking,
377 [AS_HELP_STRING([[--enable-checking[=LIST]]],
378 [enable expensive run-time checks. With LIST,
379 enable only specific categories of checks.
380 Categories are: yes,no,all,none,release.
381 Flags are: assert,df,fold,gc,gcac,gimple,misc,
382 rtlflag,rtl,runtime,tree,valgrind,types])],
383 [ac_checking_flags="${enableval}"],[
384 # Determine the default checks.
385 if test x$is_release = x ; then
386 ac_checking_flags=yes
388 ac_checking_flags=release
390 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
391 for check in release $ac_checking_flags
394 # these set all the flags to specific states
395 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
396 ac_fold_checking= ; ac_gc_checking=1 ;
397 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
398 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
399 ac_tree_checking=1 ; ac_valgrind_checking= ;
400 ac_types_checking=1 ;;
401 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
402 ac_fold_checking= ; ac_gc_checking= ;
403 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
404 ac_rtlflag_checking= ; ac_runtime_checking= ;
405 ac_tree_checking= ; ac_valgrind_checking= ;
406 ac_types_checking= ;;
407 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
408 ac_fold_checking=1 ; ac_gc_checking=1 ;
409 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
410 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
411 ac_tree_checking=1 ; ac_valgrind_checking= ;
412 ac_types_checking=1 ;;
413 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
414 ac_fold_checking= ; ac_gc_checking= ;
415 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
416 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
417 ac_tree_checking= ; ac_valgrind_checking= ;
418 ac_types_checking= ;;
419 # these enable particular checks
420 assert) ac_assert_checking=1 ;;
421 df) ac_df_checking=1 ;;
422 fold) ac_fold_checking=1 ;;
423 gc) ac_gc_checking=1 ;;
424 gcac) ac_gc_always_collect=1 ;;
425 gimple) ac_gimple_checking=1 ;;
426 misc) ac_checking=1 ;;
427 rtl) ac_rtl_checking=1 ;;
428 rtlflag) ac_rtlflag_checking=1 ;;
429 runtime) ac_runtime_checking=1 ;;
430 tree) ac_tree_checking=1 ;;
431 types) ac_types_checking=1 ;;
432 valgrind) ac_valgrind_checking=1 ;;
433 *) AC_MSG_ERROR(unknown check category $check) ;;
439 if test x$ac_checking != x ; then
440 AC_DEFINE(ENABLE_CHECKING, 1,
441 [Define if you want more run-time sanity checks. This one gets a grab
442 bag of miscellaneous but relatively cheap checks.])
443 nocommon_flag=-fno-common
445 AC_SUBST(nocommon_flag)
446 if test x$ac_df_checking != x ; then
447 AC_DEFINE(ENABLE_DF_CHECKING, 1,
448 [Define if you want more run-time sanity checks for dataflow.])
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_gimple_checking != x ; then
455 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
456 [Define if you want operations on GIMPLE (the basic data structure of
457 the high-level optimizers) to be checked for dynamic type safety at
458 runtime. This is moderately expensive.])
460 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
461 if test x$ac_runtime_checking != x ; then
462 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
463 [Define if you want runtime assertions enabled. This is a cheap check.])
465 if test x$ac_tree_checking != x ; then
466 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
467 [Define if you want all operations on trees (the basic data
468 structure of the front ends) to be checked for dynamic type safety
469 at runtime. This is moderately expensive. The tree browser debugging
470 routines will also be enabled by this option.
472 TREEBROWSER=tree-browser.o
474 if test x$ac_types_checking != x ; then
475 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
476 [Define if you want all gimple types to be verified after gimplifiation.
480 AC_SUBST(TREEBROWSER)
481 if test x$ac_rtl_checking != x ; then
482 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
483 [Define if you want all operations on RTL (the basic data structure
484 of the optimizer and back end) to be checked for dynamic type safety
485 at runtime. This is quite expensive.])
487 if test x$ac_rtlflag_checking != x ; then
488 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
489 [Define if you want RTL flag accesses to be checked against the RTL
490 codes that are supported for each access macro. This is relatively
493 if test x$ac_gc_checking != x ; then
494 AC_DEFINE(ENABLE_GC_CHECKING, 1,
495 [Define if you want the garbage collector to do object poisoning and
496 other memory allocation checks. This is quite expensive.])
498 if test x$ac_gc_always_collect != x ; then
499 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
500 [Define if you want the garbage collector to operate in maximally
501 paranoid mode, validating the entire heap and collecting garbage at
502 every opportunity. This is extremely expensive.])
504 if test x$ac_fold_checking != x ; then
505 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
506 [Define if you want fold checked that it never destructs its argument.
507 This is quite expensive.])
509 valgrind_path_defines=
512 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
513 dnl # an if statement. This was the source of very frustrating bugs
514 dnl # in converting to autoconf 2.5x!
515 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
517 if test x$ac_valgrind_checking != x ; then
518 # It is certainly possible that there's valgrind but no valgrind.h.
519 # GCC relies on making annotations so we must have both.
520 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
521 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
522 [[#include <valgrind/memcheck.h>
523 #ifndef VALGRIND_DISCARD
524 #error VALGRIND_DISCARD not defined
526 [gcc_cv_header_valgrind_memcheck_h=yes],
527 [gcc_cv_header_valgrind_memcheck_h=no])
528 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
529 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
530 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
531 [[#include <memcheck.h>
532 #ifndef VALGRIND_DISCARD
533 #error VALGRIND_DISCARD not defined
535 [gcc_cv_header_memcheck_h=yes],
536 [gcc_cv_header_memcheck_h=no])
537 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
538 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
539 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
540 if test "x$valgrind_path" = "x" \
541 || (test $have_valgrind_h = no \
542 && test $gcc_cv_header_memcheck_h = no \
543 && test $gcc_cv_header_valgrind_memcheck_h = no); then
544 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
546 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
547 valgrind_command="$valgrind_path -q"
548 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
549 [Define if you want to run subprograms and generated programs
550 through valgrind (a memory checker). This is extremely expensive.])
551 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
552 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
553 [Define if valgrind's valgrind/memcheck.h header is installed.])
555 if test $gcc_cv_header_memcheck_h = yes; then
556 AC_DEFINE(HAVE_MEMCHECK_H, 1,
557 [Define if valgrind's memcheck.h header is installed.])
560 AC_SUBST(valgrind_path_defines)
561 AC_SUBST(valgrind_command)
563 # Enable code coverage collection
564 AC_ARG_ENABLE(coverage,
565 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
566 [enable compiler's code coverage collection.
567 Use to measure compiler performance and locate
568 unused parts of the compiler. With LEVEL, specify
569 optimization. Values are opt, noopt,
571 [case "${enableval}" in
573 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
576 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
579 # a.k.a. --disable-coverage
583 AC_MSG_ERROR(unknown coverage setting $enableval)
587 AC_SUBST(coverage_flags)
589 AC_ARG_ENABLE(gather-detailed-mem-stats,
590 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
591 [enable detailed memory allocation stats gathering])], [],
592 [enable_gather_detailed_mem_stats=no])
593 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
594 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
595 [Define to enable detailed memory allocation stats gathering.])
597 # -------------------------------
598 # Miscenalleous configure options
599 # -------------------------------
603 [AS_HELP_STRING([--with-stabs],
604 [arrange to use stabs instead of host debug format])],
608 # Determine whether or not multilibs are enabled.
609 AC_ARG_ENABLE(multilib,
610 [AS_HELP_STRING([--enable-multilib],
611 [enable library support for multiple ABIs])],
612 [], [enable_multilib=yes])
613 AC_SUBST(enable_multilib)
615 # Enable __cxa_atexit for C++.
616 AC_ARG_ENABLE(__cxa_atexit,
617 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
620 # Enable C extension for decimal float if target supports it.
621 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
623 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
624 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
625 [Define to 1 to enable decimal float extension to C.])
627 # Use default_decimal_float for dependency.
628 enable_decimal_float=$default_decimal_float
630 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
631 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
632 [Define to 1 to specify that we are using the BID decimal floating
633 point format instead of DPD])
635 # Enable C extension for fixed-point arithmetic.
636 AC_ARG_ENABLE(fixed-point,
637 [AS_HELP_STRING([--enable-fixed-point],
638 [enable fixed-point arithmetic extension to C])],
643 enable_fixed_point=yes
647 enable_fixed_point=yes
650 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
651 enable_fixed_point=no
655 AC_SUBST(enable_fixed_point)
657 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
659 [Define to 1 to enable fixed-point arithmetic extension to C.])
662 # Pass with no value to take the default
663 # Pass with a value to specify a thread package
664 AC_ARG_ENABLE(threads,
665 [AS_HELP_STRING([[--enable-threads[=LIB]]],
666 [enable thread usage for target GCC,
667 using LIB thread package])],,
671 [AS_HELP_STRING([--enable-tls],
672 [enable or disable generation of tls code
673 overriding the assembler check for tls support])],
677 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
678 Valid choices are 'yes' and 'no'.]) ;;
682 AC_ARG_ENABLE(objc-gc,
683 [AS_HELP_STRING([--enable-objc-gc],
684 [enable the use of Boehm's garbage collector with
685 the GNU Objective-C runtime])],
686 if test x$enable_objc_gc = xno; then
694 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
695 dwarf2="$with_dwarf2",
698 AC_ARG_ENABLE(shared,
699 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
701 case $enable_shared in
705 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
706 for pkg in $enableval; do
707 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
714 ], [enable_shared=yes])
715 AC_SUBST(enable_shared)
717 AC_ARG_WITH([native-system-header-dir],
718 [ --with-native-system-header-dir=dir
719 use dir as the directory to look for standard
720 system header files in. Defaults to /usr/include.],
722 case ${with_native_system_header_dir} in
723 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
724 /* | [[A-Za-z]]:[[\\/]]*) ;;
725 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
727 configured_native_system_header_dir="${withval}"
728 ], [configured_native_system_header_dir=])
730 AC_ARG_WITH(build-sysroot,
731 [AS_HELP_STRING([--with-build-sysroot=sysroot],
732 [use sysroot as the system root during the build])],
733 [if test x"$withval" != x ; then
734 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
736 [SYSROOT_CFLAGS_FOR_TARGET=])
737 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
739 if test "x$prefix" = xNONE; then
740 test_prefix=/usr/local
744 if test "x$exec_prefix" = xNONE; then
745 test_exec_prefix=$test_prefix
747 test_exec_prefix=$exec_prefix
751 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
752 [search for usr/lib, usr/include, et al, within DIR])],
754 case ${with_sysroot} in
755 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
756 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
759 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
760 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
762 case ${TARGET_SYSTEM_ROOT} in
763 "${test_prefix}"|"${test_prefix}/"*|\
764 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
765 '${prefix}'|'${prefix}/'*|\
766 '${exec_prefix}'|'${exec_prefix}/'*)
767 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
768 TARGET_SYSTEM_ROOT_DEFINE="$t"
773 TARGET_SYSTEM_ROOT_DEFINE=
774 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
776 AC_SUBST(TARGET_SYSTEM_ROOT)
777 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
778 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
781 [AS_HELP_STRING([--with-specs=SPECS],
782 [add SPECS to driver command-line processing])],
783 [CONFIGURE_SPECS=$withval],
786 AC_SUBST(CONFIGURE_SPECS)
788 ACX_PKGVERSION([GCC])
789 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
791 # Sanity check enable_languages in case someone does not run the toplevel
792 # configure # script.
793 AC_ARG_ENABLE(languages,
794 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
795 [case ,${enable_languages}, in
797 # go safe -- we cannot be much sure without the toplevel
799 # analysis of which target libs are present and usable
803 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
808 enable_languages=c,${enable_languages}
811 [enable_languages=c])
813 AC_ARG_WITH(multilib-list,
814 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
816 with_multilib_list=default)
818 # -------------------------
819 # Checks for other programs
820 # -------------------------
824 # Find some useful tools
826 # We need awk to create options.c and options.h.
827 # Bail out if it's missing.
829 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
836 AC_SUBST(ranlib_flags)
840 # See if cmp has --ignore-initial.
841 gcc_AC_PROG_CMP_IGNORE_INITIAL
843 # See if we have the mktemp command.
844 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
846 # See if makeinfo has been installed and is modern enough
847 # that we can use it.
848 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
849 [GNU texinfo.* \([0-9][0-9.]*\)],
850 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
851 if test $gcc_cv_prog_makeinfo_modern = no; then
853 *** Makeinfo is missing or too old.
854 *** Info documentation will not be built.])
861 # Is pod2man recent enough to regenerate manpages?
862 AC_MSG_CHECKING([for recent Pod::Man])
863 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
865 GENERATED_MANPAGES=generated-manpages
870 AC_SUBST(GENERATED_MANPAGES)
872 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
875 dnl Don't use AC_PROG_LEX; we insist on flex.
876 dnl LEXLIB is not useful in gcc.
877 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
880 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
882 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
883 # check for build == host before using them.
886 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
887 && test -d ../binutils ; then
888 NM='${objdir}/../binutils/nm-new'
890 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
894 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
895 && test -d ../binutils ; then
896 AR='${objdir}/../binutils/ar'
898 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
902 # --------------------
903 # Checks for C headers
904 # --------------------
906 # Need to reject headers which give warnings, so that the -Werror bootstrap
907 # works later. *sigh* This needs to come before all header checks.
914 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
915 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
916 sys/resource.h sys/param.h sys/times.h sys/stat.h \
917 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libintl.h)
919 # Check for thread headers.
920 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
921 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
923 # These tests can't be done till we know if we have limits.h.
927 # ----------------------
928 # Checks for C++ headers
929 # ----------------------
931 dnl Autoconf will give an error in the configure script if there is no
932 dnl C++ preprocessor. Hack to prevent that.
933 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
935 m4_popdef([AC_MSG_ERROR])[]dnl
939 AC_CHECK_HEADERS(unordered_map)
940 AC_CHECK_HEADERS(tr1/unordered_map)
941 AC_CHECK_HEADERS(ext/hash_map)
950 # These libraries may be used by collect2.
951 # We may need a special search path to get them linked.
952 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
954 for libs in '' -lld -lmld \
955 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
956 '-L/usr/lib/cmplrs/cc3.11 -lmld'
959 AC_TRY_LINK_FUNC(ldopen,
960 [gcc_cv_collect2_libs="$libs"; break])
963 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
964 case $gcc_cv_collect2_libs in
966 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
968 AC_SUBST(COLLECT2_LIBS)
970 # When building Ada code on Alpha, we need exc_resume which is usually in
971 # -lexc. So test for it.
974 AC_SEARCH_LIBS(exc_resume, exc)
977 AC_SUBST(GNAT_LIBEXC)
979 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
982 AC_SEARCH_LIBS(kstat_open, kstat)
983 EXTRA_GCC_LIBS="$LIBS"
985 AC_SUBST(EXTRA_GCC_LIBS)
987 # Some systems put ldexp and frexp in libm instead of libc; assume
988 # they're both in the same place. jcf-dump needs them.
991 AC_SEARCH_LIBS(ldexp, m)
996 # Use <inttypes.h> only if it exists,
997 # doesn't clash with <sys/types.h>, and declares intmax_t.
998 AC_MSG_CHECKING(for inttypes.h)
999 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1000 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1001 [[#include <sys/types.h>
1002 #include <inttypes.h>]],
1003 [[intmax_t i = -1;]])],
1004 [gcc_cv_header_inttypes_h=yes],
1005 [gcc_cv_header_inttypes_h=no])])
1006 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1007 if test $gcc_cv_header_inttypes_h = yes; then
1008 AC_DEFINE(HAVE_INTTYPES_H, 1,
1009 [Define if you have a working <inttypes.h> header file.])
1012 dnl Disabled until we have a complete test for buggy enum bitfields.
1013 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1015 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1016 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1017 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1018 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1019 putchar_unlocked putc_unlocked)
1020 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1021 sysconf strsignal getrusage nl_langinfo \
1022 gettimeofday mbstowcs wcswidth mmap setlocale \
1023 gcc_UNLOCKED_FUNCS madvise)
1025 if test x$ac_cv_func_mbstowcs = xyes; then
1026 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1027 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1033 [gcc_cv_func_mbstowcs_works=yes],
1034 [gcc_cv_func_mbstowcs_works=no],
1035 [gcc_cv_func_mbstowcs_works=yes])])
1036 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1037 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1038 [Define this macro if mbstowcs does not crash when its
1039 first argument is NULL.])
1043 AC_CHECK_TYPE(ssize_t, int)
1044 AC_CHECK_TYPE(caddr_t, char *)
1046 GCC_AC_FUNC_MMAP_BLACKLIST
1050 # Under VMS, vfork works very differently than on Unix. The standard test
1051 # won't work, and it isn't easily adaptable. It makes more sense to
1053 ac_cv_func_vfork_works=yes
1058 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1059 # iconv() prototype.
1064 # Until we have in-tree GNU iconv:
1066 AC_SUBST(LIBICONV_DEP)
1072 # We will need to find libiberty.h and ansidecl.h
1073 saved_CFLAGS="$CFLAGS"
1074 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1075 saved_CXXFLAGS="$CXXFLAGS"
1076 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1077 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1078 strsignal strstr stpcpy strverscmp \
1079 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1080 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1081 #include "ansidecl.h"
1082 #include "system.h"])
1084 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_RESOURCE_H
1088 #include <sys/resource.h>
1092 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1093 #include "ansidecl.h"
1095 #ifdef HAVE_SYS_RESOURCE_H
1096 #include <sys/resource.h>
1098 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1099 [Define to `long' if <sys/resource.h> doesn't define.])])
1101 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1102 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1103 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1104 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1105 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1106 #include "ansidecl.h"
1115 gcc_AC_CHECK_DECLS(times, , ,[
1116 #include "ansidecl.h"
1118 #ifdef HAVE_SYS_TIMES_H
1119 #include <sys/times.h>
1123 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1124 #include "ansidecl.h"
1129 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1132 gcc_AC_CHECK_DECLS(madvise, , ,[
1133 #include "ansidecl.h"
1138 # More time-related stuff.
1139 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1140 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1141 #include "ansidecl.h"
1143 #ifdef HAVE_SYS_TIMES_H
1144 #include <sys/times.h>
1146 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1147 if test $ac_cv_struct_tms = yes; then
1148 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1149 [Define if <sys/times.h> defines struct tms.])
1152 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1153 # revisit after autoconf 2.50.
1154 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1155 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1156 #include "ansidecl.h"
1158 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1159 if test $gcc_cv_type_clock_t = yes; then
1160 AC_DEFINE(HAVE_CLOCK_T, 1,
1161 [Define if <time.h> defines clock_t.])
1164 # Check if F_SETLKW is supported by fcntl.
1165 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1166 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1167 #include <fcntl.h>]], [[
1173 return fcntl (1, F_SETLKW, &fl);]])],
1174 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1175 if test $ac_cv_f_setlkw = yes; then
1176 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1177 [Define if F_SETLKW supported by fcntl.])
1180 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1181 CFLAGS="$saved_CFLAGS"
1182 CXXFLAGS="$saved_CXXFLAGS"
1184 # mkdir takes a single argument on some systems.
1185 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1193 # With Setjmp/Longjmp based exception handling.
1194 AC_ARG_ENABLE(sjlj-exceptions,
1195 [AS_HELP_STRING([--enable-sjlj-exceptions],
1196 [arrange to use setjmp/longjmp exception handling])],
1199 if test $enableval != yes; then
1200 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1205 force_sjlj_exceptions=yes],
1208 force_sjlj_exceptions=yes
1212 force_sjlj_exceptions=no
1215 if test $force_sjlj_exceptions = yes; then
1216 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1217 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1218 [Define 0/1 to force the choice for exception handling model.])
1221 # --------------------------------------------------------
1222 # Build, host, and target specific configuration fragments
1223 # --------------------------------------------------------
1225 # Collect build-machine-specific information.
1226 . ${srcdir}/config.build
1228 # Collect host-machine-specific information.
1229 . ${srcdir}/config.host
1233 # Collect target-machine-specific information.
1234 . ${srcdir}/config.gcc
1236 extra_objs="${host_extra_objs} ${extra_objs}"
1237 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1239 # Default the target-machine variables that were not explicitly set.
1240 if test x"$tm_file" = x
1241 then tm_file=$cpu_type/$cpu_type.h; fi
1243 if test x"$extra_headers" = x
1244 then extra_headers=; fi
1246 if test x$md_file = x
1247 then md_file=$cpu_type/$cpu_type.md; fi
1249 if test x$out_file = x
1250 then out_file=$cpu_type/$cpu_type.c; fi
1252 if test x"$tmake_file" = x
1253 then tmake_file=$cpu_type/t-$cpu_type
1256 # Support --enable-initfini-array.
1257 if test x$enable_initfini_array != xno; then
1258 tm_file="${tm_file} initfini-array.h"
1261 if test x"$dwarf2" = xyes
1262 then tm_file="$tm_file tm-dwarf2.h"
1265 # Say what files are being used for the output code and MD file.
1266 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1267 echo "Using \`$srcdir/config/$md_file' as machine description file."
1269 # If any of the xm_file variables contain nonexistent files, warn
1270 # about them and drop them.
1273 for x in $build_xm_file; do
1274 if test -f $srcdir/config/$x
1276 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1282 for x in $host_xm_file; do
1283 if test -f $srcdir/config/$x
1285 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1291 for x in $xm_file; do
1292 if test -f $srcdir/config/$x
1294 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1300 for f in $tm_file; do
1303 if test $count = ax; then
1304 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1306 echo "Using the following target machine macro files:"
1307 for f in $tm_file; do
1308 echo " $srcdir/config/$f"
1312 if test x$need_64bit_hwint = xyes; then
1313 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1314 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1317 if test x$use_long_long_for_widest_fast_int = xyes; then
1318 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1319 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1320 efficiently supported by the host hardware.])
1323 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1324 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1326 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1327 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1330 for f in $host_xm_file; do
1333 if test $count = a; then
1335 elif test $count = ax; then
1336 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1338 echo "Using the following host machine macro files:"
1339 for f in $host_xm_file; do
1340 echo " $srcdir/config/$f"
1343 echo "Using ${out_host_hook_obj} for host machine hooks."
1345 if test "$host_xm_file" != "$build_xm_file"; then
1347 for f in $build_xm_file; do
1350 if test $count = a; then
1352 elif test $count = ax; then
1353 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1355 echo "Using the following build machine macro files:"
1356 for f in $build_xm_file; do
1357 echo " $srcdir/config/$f"
1362 if test -n "$configured_native_system_header_dir"; then
1363 native_system_header_dir=$configured_native_system_header_dir
1365 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1366 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1370 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1371 gcc_cv_mcontext_underscores,
1373 #include <sys/cdefs.h>
1374 #include <sys/signal.h>
1375 #include <ucontext.h>
1376 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1378 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1379 if test $gcc_cv_mcontext_underscores = yes; then
1380 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1381 [mcontext_t fields start with __])
1390 # Check if a valid thread package
1391 case ${enable_threads} in
1394 target_thread_file='single'
1398 target_thread_file='single'
1400 aix | dce | lynx | mipssde | posix | rtems | \
1401 single | tpf | vxworks | win32)
1402 target_thread_file=${enable_threads}
1405 echo "${enable_threads} is an unknown thread package" 1>&2
1410 if test x${thread_file} = x; then
1411 # No thread file set by target-specific clauses in config.gcc,
1412 # so use file chosen by default logic above
1413 thread_file=${target_thread_file}
1421 if test x$enable___cxa_atexit = xyes || \
1422 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1423 if test x$host = x$target; then
1425 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1426 # keyed to flag_use_cxa_atexit
1431 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1432 [echo "__cxa_atexit can't be enabled on this target"])
1436 # We can't check for __cxa_atexit when building a cross, so assume
1440 if test x$use_cxa_atexit = xyes; then
1441 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1442 [Define if you want to use __cxa_atexit, rather than atexit, to
1443 register C++ destructors for local statics and global objects.
1444 This is essential for fully standards-compliant handling of
1445 destructors, but requires __cxa_atexit in libc.])
1449 # Look for a file containing extra machine modes.
1450 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1451 extra_modes_file='$(srcdir)'/config/${extra_modes}
1452 AC_SUBST(extra_modes_file)
1453 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1454 [Define to the name of a file containing a list of extra machine modes
1455 for this architecture.])
1458 # Convert extra_options into a form suitable for Makefile use.
1461 for f in $extra_options; do
1462 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1463 all_opt_files="$all_opt_files $srcdir/config/$f"
1465 AC_SUBST(extra_opt_files)
1467 # auto-host.h is the file containing items generated by autoconf and is
1468 # the first file included by config.h.
1469 # If host=build, it is correct to have bconfig include auto-host.h
1470 # as well. If host!=build, we are in error and need to do more
1471 # work to find out the build config parameters.
1472 if test x$host = x$build
1474 build_auto=auto-host.h
1476 # We create a subdir, then run autoconf in the subdir.
1477 # To prevent recursion we set host and build for the new
1478 # invocation of configure to the build for this invocation
1485 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1486 *) realsrcdir=../${srcdir};;
1488 saved_CFLAGS="${CFLAGS}"
1489 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1490 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1491 ${realsrcdir}/configure \
1492 --enable-languages=${enable_languages-all} \
1493 --target=$target_alias --host=$build_alias --build=$build_alias
1494 CFLAGS="${saved_CFLAGS}"
1496 # We just finished tests for the build machine, so rename
1497 # the file auto-build.h in the gcc directory.
1498 mv auto-host.h ../auto-build.h
1501 build_auto=auto-build.h
1503 AC_SUBST(build_subdir)
1505 tm_file="${tm_file} defaults.h"
1506 tm_p_file="${tm_p_file} tm-preds.h"
1507 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1508 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1509 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1510 # put this back in temporarily.
1511 xm_file="auto-host.h ansidecl.h ${xm_file}"
1518 # Compile in configure arguments.
1519 if test -f configargs.h ; then
1520 # Being re-configured.
1521 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1522 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1524 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1527 # Double all backslashes and backslash all quotes to turn
1528 # gcc_config_arguments into a C string.
1529 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1530 $gcc_config_arguments
1532 gcc_config_arguments_str=`cat conftest.out`
1535 cat > configargs.h <<EOF
1536 /* Generated automatically. */
1537 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1538 static const char thread_model[] = "$thread_file";
1540 static const struct {
1541 const char *name, *value;
1542 } configure_default_options[] = $configure_default_options;
1547 gcc_BASEVER=`cat $srcdir/BASE-VER`
1548 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1549 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1550 if test -f $srcdir/REVISION ; then
1551 gcc_REVISION=`cat $srcdir/REVISION`
1555 cat > plugin-version.h <<EOF
1556 #include "configargs.h"
1558 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1559 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1560 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1561 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1563 static char basever[] = "$gcc_BASEVER";
1564 static char datestamp[] = "$gcc_DATESTAMP";
1565 static char devphase[] = "$gcc_DEVPHASE";
1566 static char revision[] = "$gcc_REVISION";
1568 /* FIXME plugins: We should make the version information more precise.
1569 One way to do is to add a checksum. */
1571 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1573 configuration_arguments};
1577 # Internationalization
1578 ZW_GNU_GETTEXT_SISTER_DIR
1580 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1581 # -liconv on the link line twice.
1582 case "$LIBINTL" in *$LIBICONV*)
1586 AC_ARG_ENABLE(secureplt,
1587 [AS_HELP_STRING([--enable-secureplt],
1588 [enable -msecure-plt by default for PowerPC])],
1591 AC_ARG_ENABLE(leading-mingw64-underscores,
1592 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1593 [enable leading underscores on 64 bit mingw targets]),
1595 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1596 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1597 [Define if we should use leading underscore on 64 bit mingw targets])])
1600 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1603 AC_ARG_ENABLE(frame-pointer,
1604 [AS_HELP_STRING([--enable-frame-pointer],
1605 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1608 linux* | darwin[[8912]]*)
1609 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1611 enable_frame_pointer=no
1614 enable_frame_pointer=yes
1619 # Windows32 Registry support for specifying GCC installation paths.
1620 AC_ARG_ENABLE(win32-registry,
1621 [AS_HELP_STRING([--disable-win32-registry],
1622 [disable lookup of installation paths in the
1623 Registry on Windows hosts])
1624 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1625 AS_HELP_STRING([--enable-win32-registry=KEY],
1626 [use KEY instead of GCC version as the last portion
1627 of the registry key])],,)
1630 win32 | pe | cygwin* | mingw32* | uwin*)
1631 if test "x$enable_win32_registry" != xno; then
1632 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1635 if test "x$enable_win32_registry" != xno; then
1636 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1637 [Define to 1 if installation paths should be looked up in the Windows
1638 Registry. Ignored on non-Windows hosts.])
1640 if test "x$enable_win32_registry" != xyes \
1641 && test "x$enable_win32_registry" != x; then
1642 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1643 [Define to be the last component of the Windows registry key under which
1644 to look for installation paths. The full key used will be
1645 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1646 The default is the GCC version number.])
1652 # Get an absolute path to the GCC top-level source directory
1653 holddir=`${PWDCMD-pwd}`
1655 topdir=`${PWDCMD-pwd}`
1658 # Conditionalize the makefile for this host machine.
1660 for f in ${host_xmake_file}
1662 if test -f ${srcdir}/config/$f
1664 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1668 # Conditionalize the makefile for this target machine.
1670 for f in ${tmake_file}
1672 if test -f ${srcdir}/config/$f
1674 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1677 tmake_file="${tmake_file_}"
1679 out_object_file=`basename $out_file .c`.o
1680 common_out_object_file=`basename $common_out_file .c`.o
1682 tm_file_list="options.h"
1683 tm_include_list="options.h insn-constants.h"
1684 for f in $tm_file; do
1687 f=`echo $f | sed 's/^..//'`
1688 tm_file_list="${tm_file_list} $f"
1689 tm_include_list="${tm_include_list} $f"
1692 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1693 tm_include_list="${tm_include_list} $f"
1696 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1697 tm_include_list="${tm_include_list} config/$f"
1704 for f in $tm_p_file; do
1707 tm_p_file_list="${tm_p_file_list} $f"
1708 tm_p_include_list="${tm_p_include_list} $f"
1711 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1712 tm_p_include_list="${tm_p_include_list} config/$f"
1718 for f in $xm_file; do
1721 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1722 xm_include_list="${xm_include_list} $f"
1725 xm_file_list="${xm_file_list} $f"
1726 xm_include_list="${xm_include_list} $f"
1729 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1730 xm_include_list="${xm_include_list} config/$f"
1736 host_xm_include_list=
1737 for f in $host_xm_file; do
1740 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1741 host_xm_include_list="${host_xm_include_list} $f"
1744 host_xm_file_list="${host_xm_file_list} $f"
1745 host_xm_include_list="${host_xm_include_list} $f"
1748 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1749 host_xm_include_list="${host_xm_include_list} config/$f"
1755 for f in $build_xm_file; do
1758 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1759 build_xm_include_list="${build_xm_include_list} $f"
1761 auto-build.h | auto-host.h )
1762 build_xm_file_list="${build_xm_file_list} $f"
1763 build_xm_include_list="${build_xm_include_list} $f"
1766 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1767 build_xm_include_list="${build_xm_include_list} config/$f"
1772 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1773 # cross-compiler which does not use the native headers and libraries.
1774 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1775 CROSS= AC_SUBST(CROSS)
1776 ALL=all.internal AC_SUBST(ALL)
1777 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1779 if test "x$with_build_sysroot" != x; then
1780 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1782 # This value is used, even on a native system, because
1783 # CROSS_SYSTEM_HEADER_DIR is just
1784 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1785 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1788 if test x$host != x$target
1790 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1792 SYSTEM_HEADER_DIR=$build_system_header_dir
1793 case "$host","$target" in
1794 # Darwin crosses can use the host system's libraries and headers,
1795 # because of the fat library support. Of course, it must be the
1796 # same version of Darwin on both sides. Allow the user to
1797 # just say --target=foo-darwin without a version number to mean
1798 # "the version on this system".
1799 *-*-darwin*,*-*-darwin*)
1800 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1801 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1802 if test $hostos = $targetos -o $targetos = darwin ; then
1804 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1809 i?86-*-*,x86_64-*-* \
1810 | powerpc*-*-*,powerpc64*-*-*)
1811 CROSS="$CROSS -DNATIVE_CROSS" ;;
1816 if test "x$with_headers" = x; then
1823 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1824 SYSTEM_HEADER_DIR=$build_system_header_dir
1827 # If this is a cross-compiler that does not
1828 # have its own set of headers then define
1831 # If this is using newlib, without having the headers available now,
1832 # then define inhibit_libc in LIBGCC2_CFLAGS.
1833 # This prevents libgcc2 from containing any code which requires libc
1835 : ${inhibit_libc=false}
1836 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1837 test x$with_newlib = xyes ; } &&
1838 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1841 AC_SUBST(inhibit_libc)
1843 # When building gcc with a cross-compiler, we need to adjust things so
1844 # that the generator programs are still built with the native compiler.
1845 # Also, we cannot run fixincludes.
1847 # These are the normal (build=host) settings:
1848 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1849 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1850 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1851 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1852 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1853 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1855 # And these apply if build != host, or we are generating coverage data
1856 if test x$build != x$host || test "x$coverage_flags" != x
1858 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1859 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1862 # Expand extra_headers to include complete path.
1863 # This substitutes for lots of t-* files.
1865 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1866 for file in ${extra_headers} ; do
1867 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1870 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1871 if test x"$use_gcc_tgmath" = xyes
1872 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1875 # Define collect2 in Makefile.
1876 case $host_can_use_collect2 in
1878 *) collect2='collect2$(exeext)' ;;
1880 AC_SUBST([collect2])
1882 # Add a definition of USE_COLLECT2 if system wants one.
1883 case $use_collect2 in
1884 no) use_collect2= ;;
1887 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1888 xm_defines="${xm_defines} USE_COLLECT2"
1889 case $host_can_use_collect2 in
1891 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1897 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1898 [Define to the name of the LTO plugin DSO that must be
1899 passed to the linker's -plugin=LIB option.])
1901 # ---------------------------
1902 # Assembler & linker features
1903 # ---------------------------
1905 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1906 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1907 # However when ld-new is first executed from the build tree, libtool will
1908 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1909 # to the build tree. While doing this we need to use the previous-stage
1910 # linker, or we have an infinite loop. The presence of a shell script as
1911 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1912 # the gcc/collect-ld script. So we need to know how libtool works, or
1913 # exec-tool will fail.
1915 m4_defun([_LT_CONFIG_COMMANDS], [])
1918 AC_SUBST(enable_fast_install)
1920 # Identify the assembler which will work hand-in-glove with the newly
1921 # built GCC, so that we can examine its features. This is the assembler
1922 # which will be driven by the driver program.
1924 # If build != host, and we aren't building gas in-tree, we identify a
1925 # build->target assembler and hope that it will have the same features
1926 # as the host->target assembler we'll be using.
1927 gcc_cv_gas_major_version=
1928 gcc_cv_gas_minor_version=
1929 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1931 m4_pattern_allow([AS_FOR_TARGET])dnl
1932 AS_VAR_SET_IF(gcc_cv_as,, [
1933 if test -x "$DEFAULT_ASSEMBLER"; then
1934 gcc_cv_as="$DEFAULT_ASSEMBLER"
1935 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1936 && test -f ../gas/Makefile \
1937 && test x$build = x$host; then
1938 gcc_cv_as=../gas/as-new$build_exeext
1939 elif test -x as$build_exeext; then
1940 # Build using assembler in the current directory.
1941 gcc_cv_as=./as$build_exeext
1942 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1943 gcc_cv_as="$AS_FOR_TARGET"
1945 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1948 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1949 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1950 case "$ORIGINAL_AS_FOR_TARGET" in
1951 ./as | ./as$build_exeext) ;;
1952 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1955 AC_MSG_CHECKING(what assembler to use)
1956 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1957 # Single tree build which includes gas. We want to prefer it
1958 # over whatever linker top-level may have detected, since
1959 # we'll use what we're building after installation anyway.
1960 AC_MSG_RESULT(newly built gas)
1962 _gcc_COMPUTE_GAS_VERSION
1963 in_tree_gas_is_elf=no
1964 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1965 || (grep 'obj_format = multi' ../gas/Makefile \
1966 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1968 in_tree_gas_is_elf=yes
1971 AC_MSG_RESULT($gcc_cv_as)
1975 # Identify the linker which will work hand-in-glove with the newly
1976 # built GCC, so that we can examine its features. This is the linker
1977 # which will be driven by the driver program.
1979 # If build != host, and we aren't building gas in-tree, we identify a
1980 # build->target linker and hope that it will have the same features
1981 # as the host->target linker we'll be using.
1982 gcc_cv_gld_major_version=
1983 gcc_cv_gld_minor_version=
1984 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1985 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1987 AS_VAR_SET_IF(gcc_cv_ld,, [
1988 if test -x "$DEFAULT_LINKER"; then
1989 gcc_cv_ld="$DEFAULT_LINKER"
1990 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1991 && test -f ../ld/Makefile \
1992 && test x$build = x$host; then
1993 gcc_cv_ld=../ld/ld-new$build_exeext
1994 elif test -x collect-ld$build_exeext; then
1995 # Build using linker in the current directory.
1996 gcc_cv_ld=./collect-ld$build_exeext
1997 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1998 gcc_cv_ld="$LD_FOR_TARGET"
2000 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2003 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2004 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2005 AC_ARG_WITH(plugin-ld,
2006 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2007 [if test x"$withval" != x; then
2008 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2009 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2011 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2012 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2014 # Check to see if we are using gold instead of ld
2015 AC_MSG_CHECKING(whether we are using gold)
2017 if test x$gcc_cv_ld != x; then
2018 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2019 | grep "GNU gold" > /dev/null; then
2023 AC_MSG_RESULT($ld_is_gold)
2025 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2026 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2027 case "$ORIGINAL_LD_FOR_TARGET" in
2028 ./collect-ld | ./collect-ld$build_exeext) ;;
2029 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2032 AC_MSG_CHECKING(what linker to use)
2033 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2034 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2035 # Single tree build which includes ld. We want to prefer it
2036 # over whatever linker top-level may have detected, since
2037 # we'll use what we're building after installation anyway.
2038 AC_MSG_RESULT(newly built ld)
2040 in_tree_ld_is_elf=no
2041 if (grep 'EMUL = .*elf' ../ld/Makefile \
2042 || grep 'EMUL = .*linux' ../ld/Makefile \
2043 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2044 in_tree_ld_is_elf=yes
2045 elif test "$ld_is_gold" = yes; then
2046 in_tree_ld_is_elf=yes
2048 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
2051 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2052 if test x$gcc_cv_gld_version != x; then
2056 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2057 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2060 AC_MSG_RESULT($gcc_cv_ld)
2064 # Figure out what nm we will be using.
2065 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2066 AS_VAR_SET_IF(gcc_cv_nm,, [
2067 if test -f $gcc_cv_binutils_srcdir/configure.in \
2068 && test -f ../binutils/Makefile \
2069 && test x$build = x$host; then
2070 gcc_cv_nm=../binutils/nm-new$build_exeext
2071 elif test -x nm$build_exeext; then
2072 gcc_cv_nm=./nm$build_exeext
2073 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2074 gcc_cv_nm="$NM_FOR_TARGET"
2076 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2079 AC_MSG_CHECKING(what nm to use)
2080 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2081 # Single tree build which includes binutils.
2082 AC_MSG_RESULT(newly built nm)
2085 AC_MSG_RESULT($gcc_cv_nm)
2089 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2090 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2091 case "$ORIGINAL_NM_FOR_TARGET" in
2092 ./nm | ./nm$build_exeext) ;;
2093 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2097 # Figure out what objdump we will be using.
2098 AS_VAR_SET_IF(gcc_cv_objdump,, [
2099 if test -f $gcc_cv_binutils_srcdir/configure.in \
2100 && test -f ../binutils/Makefile \
2101 && test x$build = x$host; then
2102 # Single tree build which includes binutils.
2103 gcc_cv_objdump=../binutils/objdump$build_exeext
2104 elif test -x objdump$build_exeext; then
2105 gcc_cv_objdump=./objdump$build_exeext
2106 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2107 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2109 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2112 AC_MSG_CHECKING(what objdump to use)
2113 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2114 # Single tree build which includes binutils.
2115 AC_MSG_RESULT(newly built objdump)
2116 elif test x$gcc_cv_objdump = x; then
2117 AC_MSG_RESULT(not found)
2119 AC_MSG_RESULT($gcc_cv_objdump)
2122 # Figure out what readelf we will be using.
2123 AS_VAR_SET_IF(gcc_cv_readelf,, [
2124 if test -f $gcc_cv_binutils_srcdir/configure.in \
2125 && test -f ../binutils/Makefile \
2126 && test x$build = x$host; then
2127 # Single tree build which includes binutils.
2128 gcc_cv_readelf=../binutils/readelf$build_exeext
2129 elif test -x readelf$build_exeext; then
2130 gcc_cv_readelf=./readelf$build_exeext
2132 AC_PATH_PROG(gcc_cv_readelf, readelf)
2135 AC_MSG_CHECKING(what readelf to use)
2136 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2137 # Single tree build which includes binutils.
2138 AC_MSG_RESULT(newly built readelf)
2139 elif test x$gcc_cv_readelf = x; then
2140 AC_MSG_RESULT(not found)
2142 AC_MSG_RESULT($gcc_cv_readelf)
2145 # Figure out what assembler alignment features are present.
2146 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2150 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2151 [Define if your assembler supports .balign and .p2align.])])
2153 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2156 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2157 [Define if your assembler supports specifying the maximum number
2158 of bytes to skip when using the GAS .p2align command.])])
2160 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2163 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2164 [Define if your assembler supports .literal16.])])
2166 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2168 [conftest_label1: .word 0
2170 conftest_label2: .word 0
2172 [if test x$gcc_cv_nm != x; then
2173 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2174 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2175 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2177 else gcc_cv_as_subsection_m1=yes
2179 rm -f conftest.nm1 conftest.nm2
2181 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2182 [Define if your assembler supports .subsection and .subsection -1 starts
2183 emitting at the beginning of your section.])])
2185 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2188 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2190 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2192 [ .weakref foobar, barfnot],,
2193 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2195 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2198 .NSUBSPA $CODE$,COMDAT],,
2199 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2201 # .hidden needs to be supported in both the assembler and the linker,
2202 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2203 # This is irritatingly difficult to feature test for; we have to check the
2204 # date string after the version number. If we've got an in-tree
2205 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2207 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2208 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2212 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2213 # STV_HIDDEN, so disable .hidden support if so.
2215 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2216 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2217 cat > conftest.s <<EOF
2224 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2225 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2226 grep '\.hidden default' > /dev/null; then
2229 gcc_cv_as_hidden=yes
2232 # Assume bug is present if objdump is missing.
2237 gcc_cv_as_hidden=yes
2242 # Darwin as has some visibility support, though with a different syntax.
2243 gcc_cv_as_hidden=yes
2247 # gnu_indirect_function type is an extension proposed at
2248 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2249 # selection of function implementation
2250 AC_ARG_ENABLE(gnu-indirect-function,
2251 [AS_HELP_STRING([--enable-gnu-indirect-function],
2252 [enable the use of the @gnu_indirect_function to glibc systems])],
2253 [case $enable_gnu_indirect_function in
2255 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2256 Valid choices are 'yes' and 'no'.]) ;;
2258 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2259 if test x$enable_gnu_indirect_function = xyes; then
2260 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2261 [Define if your system supports gnu indirect functions.])
2265 if test $in_tree_ld != yes ; then
2266 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2267 if echo "$ld_ver" | grep GNU > /dev/null; then
2268 if test x"$ld_is_gold" = xyes; then
2269 # GNU gold --version looks like this:
2271 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2273 # We extract the binutils version which is more familiar and specific
2274 # than the gold version.
2275 ld_vers=`echo $ld_ver | sed -n \
2276 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2278 # GNU ld --version looks like this:
2280 # GNU ld (GNU Binutils) 2.21.51.20110225
2281 ld_vers=`echo $ld_ver | sed -n \
2282 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2284 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2285 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2286 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2287 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2291 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2294 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2295 # /usr/ccs/bin/ld has been configured.
2296 ld_ver=`$gcc_cv_ld -V 2>&1`
2297 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2298 ld_vers=`echo $ld_ver | sed -n \
2299 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2300 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2301 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2309 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2310 [[if test $in_tree_ld = yes ; then
2312 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2313 && test $in_tree_ld_is_elf = yes; then
2314 gcc_cv_ld_hidden=yes
2317 gcc_cv_ld_hidden=yes
2318 if test x"$ld_is_gold" = xyes; then
2320 elif echo "$ld_ver" | grep GNU > /dev/null; then
2321 if test 0"$ld_date" -lt 20020404; then
2322 if test -n "$ld_date"; then
2323 # If there was date string, but was earlier than 2002-04-04, fail
2325 elif test -z "$ld_vers"; then
2326 # If there was no date string nor ld version number, something is wrong
2329 test -z "$ld_vers_patch" && ld_vers_patch=0
2330 if test "$ld_vers_major" -lt 2; then
2332 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2333 gcc_cv_ld_hidden="no"
2334 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2342 # Darwin ld has some visibility support.
2343 gcc_cv_ld_hidden=yes
2345 hppa64*-*-hpux* | ia64*-*-hpux*)
2346 gcc_cv_ld_hidden=yes
2348 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2349 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2350 # .symbolic was only added in Solaris 9 12/02.
2351 gcc_cv_ld_hidden=yes
2359 libgcc_visibility=no
2360 AC_SUBST(libgcc_visibility)
2361 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2362 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2363 libgcc_visibility=yes
2364 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2365 [Define if your assembler and linker support .hidden.])
2368 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2369 gcc_cv_ld_ro_rw_mix=unknown
2370 if test $in_tree_ld = yes ; then
2371 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2372 && test $in_tree_ld_is_elf = yes; then
2373 gcc_cv_ld_ro_rw_mix=read-write
2375 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2376 echo '.section myfoosect, "a"' > conftest1.s
2377 echo '.section myfoosect, "aw"' > conftest2.s
2378 echo '.byte 1' >> conftest2.s
2379 echo '.section myfoosect, "a"' > conftest3.s
2380 echo '.byte 0' >> conftest3.s
2381 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2382 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2383 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2384 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2385 conftest2.o conftest3.o > /dev/null 2>&1; then
2386 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2387 | sed -e '/myfoosect/!d' -e N`
2388 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2389 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2390 gcc_cv_ld_ro_rw_mix=read-only
2392 gcc_cv_ld_ro_rw_mix=read-write
2397 rm -f conftest.* conftest[123].*
2400 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2401 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2402 [Define if your linker links a mix of read-only
2403 and read-write sections into a read-write section.])
2405 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2407 gcc_AC_INITFINI_ARRAY
2409 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2410 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2418 [[# GAS versions before 2.11 do not support uleb128,
2419 # despite appearing to.
2420 # ??? There exists an elf-specific test that will crash
2421 # the assembler. Perhaps it's better to figure out whether
2422 # arbitrary sections are supported and try the test.
2423 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2424 if echo "$as_ver" | grep GNU > /dev/null; then
2425 as_vers=`echo $as_ver | sed -n \
2426 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2427 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2428 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2429 if test $as_major -eq 2 && test $as_minor -lt 11
2431 else gcc_cv_as_leb128=yes
2434 [AC_DEFINE(HAVE_AS_LEB128, 1,
2435 [Define if your assembler supports .sleb128 and .uleb128.])])
2437 # Check if we have assembler support for unwind directives.
2438 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2445 .cfi_escape 1, 2, 3, 4, 5
2449 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2450 # read-only and read-write sections, we need to make sure that the
2451 # assembler used emits read-write .eh_frame sections.
2452 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2453 if test "x$gcc_cv_objdump" != x; then
2454 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2455 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2456 gcc_cv_as_cfi_directive=no
2459 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2460 # On Solaris/x86, make sure that GCC and gas agree on using
2461 # read-only .eh_frame sections for 64-bit.
2462 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2463 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2464 sed -e /.eh_frame/!d -e N | \
2465 grep READONLY > /dev/null; then
2466 gcc_cv_as_cfi_directive=yes
2468 gcc_cv_as_cfi_directive=no
2472 gcc_cv_as_cfi_directive=yes
2477 # no objdump, err on the side of caution
2478 gcc_cv_as_cfi_directive=no
2481 gcc_cv_as_cfi_directive=yes
2485 gcc_cv_as_cfi_directive=yes
2488 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2489 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2493 .cfi_adjust_cfa_offset 64
2495 .cfi_adjust_cfa_offset 128
2498 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2499 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2500 gcc_cv_as_cfi_advance_working=yes
2504 # no objdump, err on the side of caution
2505 gcc_cv_as_cfi_advance_working=no
2507 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2508 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2509 [`if test $gcc_cv_as_cfi_directive = yes \
2510 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2511 [Define 0/1 if your assembler supports CFI directives.])
2513 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2514 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2515 gcc_cv_as_cfi_personality_directive, ,,
2518 .cfi_personality 0, symbol
2520 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2521 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2522 then echo 1; else echo 0; fi`],
2523 [Define 0/1 if your assembler supports .cfi_personality.])
2525 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2526 gcc_cv_as_cfi_sections_directive, ,,
2528 .cfi_sections .debug_frame, .eh_frame
2532 win32 | pe | cygwin* | mingw32* | uwin*)
2533 # Need to check that we generated the correct relocation for the
2534 # .debug_frame section. This was fixed for binutils 2.21.
2535 gcc_cv_as_cfi_sections_directive=no
2536 if test "x$gcc_cv_objdump" != x; then
2537 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2538 grep secrel > /dev/null; then
2539 gcc_cv_as_cfi_sections_directive=yes
2544 gcc_cv_as_cfi_sections_directive=yes
2547 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2548 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2549 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2550 then echo 1; else echo 0; fi`],
2551 [Define 0/1 if your assembler supports .cfi_sections.])
2553 # GAS versions up to and including 2.11.0 may mis-optimize
2555 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2563 .section .eh_frame,"aw",@progbits
2565 .4byte .LECIE1-.LSCIE1
2579 .4byte .LEFDE1-.LASFDE1
2581 .4byte .LASFDE1-__FRAME_BEGIN__
2589 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2590 cat > conftest.lit <<EOF
2591 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2592 0010 01000000 12000000 18000000 00000000 ................
2593 0020 08000000 04080000 0044 .........D @&t@
2595 cat > conftest.big <<EOF
2596 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2597 0010 00000001 00000012 00000018 00000000 ................
2598 0020 00000008 04000000 0844 .........D @&t@
2600 # If the assembler didn't choke, and we can objdump,
2601 # and we got the correct data, then succeed.
2602 # The text in the here-document typically retains its unix-style line
2603 # endings, while the output of objdump will use host line endings.
2604 # Therefore, use diff -b for the comparisons.
2605 if test x$gcc_cv_objdump != x \
2606 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2607 | tail -3 > conftest.got \
2608 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2609 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2611 gcc_cv_as_eh_frame=yes
2612 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2613 gcc_cv_as_eh_frame=buggy
2615 # Uh oh, what do we do now?
2616 gcc_cv_as_eh_frame=no
2619 if test $gcc_cv_as_eh_frame = buggy; then
2620 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2621 [Define if your assembler mis-optimizes .eh_frame data.])
2624 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2625 [elf,2,12,0], [--fatal-warnings],
2626 [.section .rodata.str, "aMS", @progbits, 1])
2627 if test $gcc_cv_as_shf_merge = no; then
2628 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2629 [elf,2,12,0], [--fatal-warnings],
2630 [.section .rodata.str, "aMS", %progbits, 1])
2632 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2633 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2634 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2636 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2637 gcc_cv_as_comdat_group,
2638 [elf,2,16,0], [--fatal-warnings],
2639 [.section .text,"axG",@progbits,.foo,comdat])
2640 if test $gcc_cv_as_comdat_group = yes; then
2641 gcc_cv_as_comdat_group_percent=no
2642 gcc_cv_as_comdat_group_group=no
2644 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2645 gcc_cv_as_comdat_group_percent,
2646 [elf,2,16,0], [--fatal-warnings],
2647 [.section .text,"axG",%progbits,.foo,comdat])
2648 if test $gcc_cv_as_comdat_group_percent = yes; then
2649 gcc_cv_as_comdat_group_group=no
2652 # Sun as uses a completely different syntax.
2657 .group foo,".text%foo",#comdat
2658 .section ".text%foo", #alloc,#execinstr,#progbits
2663 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2665 .group foo,.text%foo,#comdat
2666 .section .text%foo, "ax", @progbits
2672 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2673 gcc_cv_as_comdat_group_group,
2679 if test x"$ld_is_gold" = xyes; then
2681 elif test $in_tree_ld = yes ; then
2683 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2684 && test $in_tree_ld_is_elf = yes; then
2687 elif echo "$ld_ver" | grep GNU > /dev/null; then
2689 if test 0"$ld_date" -lt 20050308; then
2690 if test -n "$ld_date"; then
2691 # If there was date string, but was earlier than 2005-03-08, fail
2693 elif test "$ld_vers_major" -lt 2; then
2695 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2702 *-*-solaris2.1[1-9]*)
2704 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2705 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2708 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2709 # least ld version 1.2267.
2710 if test "$ld_vers_major" -gt 1; then
2712 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2714 elif test "$ld_vers_minor" -ge 2267; then
2719 # Assume linkers other than GNU ld don't support COMDAT group.
2725 # Allow overriding the automatic COMDAT group tests above.
2726 AC_ARG_ENABLE(comdat,
2727 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2728 [comdat_group="$enable_comdat"])
2729 if test $comdat_group = no; then
2730 gcc_cv_as_comdat_group=no
2731 gcc_cv_as_comdat_group_percent=no
2732 gcc_cv_as_comdat_group_group=no
2734 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2735 [`if test $gcc_cv_as_comdat_group = yes \
2736 || test $gcc_cv_as_comdat_group_percent = yes \
2737 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2738 [Define 0/1 if your assembler and linker support COMDAT groups.])
2740 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2741 gcc_cv_as_discriminator,
2745 .loc 1 1 0 discriminator 1],,
2746 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2747 [Define if your assembler supports the .loc discriminator sub-directive.])])
2749 # Thread-local storage - the check is heavily parameterized.
2758 .section ".tdata","awT",@progbits
2761 ldq $27,__tls_get_addr($29) !literal!1
2762 lda $16,foo($29) !tlsgd!1
2763 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2764 ldq $27,__tls_get_addr($29) !literal!2
2765 lda $16,foo($29) !tlsldm!2
2766 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2767 ldq $1,foo($29) !gotdtprel
2768 ldah $2,foo($29) !dtprelhi
2769 lda $3,foo($2) !dtprello
2770 lda $4,foo($29) !dtprel
2771 ldq $1,foo($29) !gottprel
2772 ldah $2,foo($29) !tprelhi
2773 lda $3,foo($2) !tprello
2774 lda $4,foo($29) !tprel'
2777 tls_as_opt=--fatal-warnings
2779 cris-*-*|crisv32-*-*)
2781 .section ".tdata","awT",@progbits
2788 tls_as_opt=--fatal-warnings
2792 .section ".tdata","awT",@progbits
2804 .section ".tdata","awT",@progbits
2808 addil LT%foo-$tls_gdidx$,gp
2809 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2812 addil LT%foo-$tls_ldidx$,gp
2814 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2815 addil LR%foo-$tls_dtpoff$,%ret0
2816 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2818 addil LT%foo-$tls_ieoff$,gp
2819 ldw RT%foo-$tls_ieoff$(%r1),%t2
2822 addil LR%foo-$tls_leoff$,%t1
2823 ldo RR%foo-$tls_leoff$(%r1),%t2'
2826 tls_as_opt=--fatal-warnings
2830 .section ".tdata","awT",%progbits
2841 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2843 i[34567]86-*-solaris2.*)
2845 tga_func=___tls_get_addr
2847 x86_64-*-solaris2.1[0-9]*)
2849 tga_func=__tls_get_addr
2855 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2857 .section .tdata,"awt",@progbits'
2861 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2862 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2866 .section ".tdata","awT",@progbits'
2869 tls_as_opt="--fatal-warnings"
2871 conftest_s="$conftest_s
2875 leal foo@tlsgd(,%ebx,1), %eax
2876 leal foo@tlsldm(%ebx), %eax
2877 leal foo@dtpoff(%eax), %edx
2878 movl foo@gottpoff(%ebx), %eax
2879 subl foo@gottpoff(%ebx), %eax
2880 addl foo@gotntpoff(%ebx), %eax
2881 movl foo@indntpoff, %eax
2882 movl \$foo@tpoff, %eax
2883 subl \$foo@tpoff, %eax
2884 leal foo@ntpoff(%ecx), %eax"
2888 .section ".tdata","awT",@progbits
2892 leaq foo@TLSGD(%rip), %rdi
2893 leaq foo@TLSLD(%rip), %rdi
2894 leaq foo@DTPOFF(%rax), %rdx
2895 movq foo@GOTTPOFF(%rip), %rax
2896 movq $foo@TPOFF, %rax'
2899 tls_as_opt=--fatal-warnings
2903 .section ".tdata","awT",@progbits
2906 addl r16 = @ltoff(@dtpmod(foo#)), gp
2907 addl r17 = @ltoff(@dtprel(foo#)), gp
2908 addl r18 = @ltoff(@tprel(foo#)), gp
2909 addl r19 = @dtprel(foo#), gp
2910 adds r21 = @dtprel(foo#), r13
2911 movl r23 = @dtprel(foo#)
2912 addl r20 = @tprel(foo#), gp
2913 adds r22 = @tprel(foo#), r13
2914 movl r24 = @tprel(foo#)'
2917 tls_as_opt=--fatal-warnings
2921 .section .tdata,"awT",@progbits
2925 addiu $4, $28, %tlsgd(x)
2926 addiu $4, $28, %tlsldm(x)
2927 lui $4, %dtprel_hi(x)
2928 addiu $4, $4, %dtprel_lo(x)
2929 lw $4, %gottprel(x)($28)
2930 lui $4, %tprel_hi(x)
2931 addiu $4, $4, %tprel_lo(x)'
2934 tls_as_opt='-32 --fatal-warnings'
2938 .section .tdata,"awT",@progbits
2943 move.l x@TLSGD(%a5),%a0
2944 move.l x@TLSLDM(%a5),%a0
2945 move.l x@TLSLDO(%a5),%a0
2946 move.l x@TLSIE(%a5),%a0
2947 move.l x@TLSLE(%a5),%a0'
2950 tls_as_opt='--fatal-warnings'
2954 .section ".tdata","awT",@progbits
2962 addi 3,31,ld0@got@tlsgd
2964 addi 3,31,x1@got@tlsld
2967 addis 9,3,x2@dtprel@ha
2968 addi 9,9,x2@dtprel@l
2969 lwz 9,x3@got@tprel(31)
2972 addis 9,2,x2@tprel@ha
2973 addi 9,9,x2@tprel@l'
2976 tls_as_opt="-a32 --fatal-warnings"
2980 .section ".tdata","awT",@progbits
2988 addi 3,2,ld0@got@tlsgd
2994 addi 3,2,x1@got@tlsld
3000 addis 9,3,x2@dtprel@ha
3001 addi 9,9,x2@dtprel@l
3004 ld 9,x3@got@dtprel(2)
3010 tls_as_opt="-a64 --fatal-warnings"
3014 .section ".tdata","awT",@progbits
3023 l %r1,foo@GOTNTPOFF(%r12)
3024 l %r1,0(%r1):tls_load:foo
3025 bas %r14,0(%r1,%r13):tls_gdcall:foo
3026 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3029 tls_as_opt="-m31 --fatal-warnings"
3033 .section ".tdata","awT",@progbits
3041 lg %r1,foo@GOTNTPOFF(%r12)
3042 larl %r1,foo@INDNTPOFF
3043 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3044 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3047 tls_as_opt="-m64 -Aesame --fatal-warnings"
3049 sh-*-* | sh[34]-*-*)
3051 .section ".tdata","awT",@progbits
3061 tls_as_opt=--fatal-warnings
3065 sparc*-sun-solaris2.*)
3067 tga_func=__tls_get_addr
3073 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3075 .section ".tdata",#alloc,#write,#tls'
3080 .section ".tdata","awT",@progbits'
3083 tls_as_opt="-32 --fatal-warnings"
3085 conftest_s="$conftest_s
3088 sethi %tgd_hi22(foo), %o0
3089 add %o0, %tgd_lo10(foo), %o1
3090 add %l7, %o1, %o0, %tgd_add(foo)
3091 call __tls_get_addr, %tgd_call(foo)
3092 sethi %tldm_hi22(foo), %l1
3093 add %l1, %tldm_lo10(foo), %l2
3094 add %l7, %l2, %o0, %tldm_add(foo)
3095 call __tls_get_addr, %tldm_call(foo)
3096 sethi %tldo_hix22(foo), %l3
3097 xor %l3, %tldo_lox10(foo), %l4
3098 add %o0, %l4, %l5, %tldo_add(foo)
3099 sethi %tie_hi22(foo), %o3
3100 add %o3, %tie_lo10(foo), %o3
3101 ld [%l7 + %o3], %o2, %tie_ld(foo)
3102 add %g7, %o2, %o4, %tie_add(foo)
3103 sethi %tle_hix22(foo), %l1
3104 xor %l1, %tle_lox10(foo), %o5
3105 ld [%g7 + %o5], %o1"
3109 .section ".tdata","awT",@progbits
3112 addli r0, zero, tls_gd(foo)
3113 auli r0, zero, tls_gd_ha16(foo)
3114 addli r0, r0, tls_gd_lo16(foo)
3116 addli r0, zero, tls_ie(foo)
3117 auli r0, r0, tls_ie_ha16(foo)
3118 addli r0, r0, tls_ie_lo16(foo)'
3121 tls_as_opt="--fatal-warnings"
3125 .section ".tdata","awT",@progbits
3128 shl16insli r0, zero, hw0_last_tls_gd(foo)
3129 shl16insli r0, zero, hw1_last_tls_gd(foo)
3130 shl16insli r0, r0, hw0_tls_gd(foo)
3132 shl16insli r0, zero, hw1_last_tls_ie(foo)
3133 shl16insli r0, r0, hw0_tls_ie(foo)'
3136 tls_as_opt="--fatal-warnings"
3140 .section ".tdata","awT",@progbits
3143 movi a8, foo@TLSFUNC
3144 movi a10, foo@TLSARG
3145 callx8.tls a8, foo@TLSCALL'
3152 if test "x$enable_tls" = xno ; then
3153 : # TLS explicitly disabled.
3154 elif test "x$enable_tls" = xyes ; then
3155 set_have_as_tls=yes # TLS explicitly enabled.
3156 elif test -z "$tls_first_major"; then
3157 : # If we don't have a check, assume no support.
3159 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3160 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3161 [set_have_as_tls=yes])
3164 # TLS was introduced in the Solaris 9 FCS release. Support for GNU-style
3165 # TLS on x86 was only introduced in Solaris 9 4/04, replacing the earlier
3166 # Sun style that Sun ld and GCC don't support any longer.
3168 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3170 # Check ld and ld.so.1 TLS support.
3171 if echo "$ld_ver" | grep GNU > /dev/null; then
3172 # Assume all interesting versions of GNU ld have TLS support.
3173 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3177 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3179 min_tls_ld_vers_minor=374
3181 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3182 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3183 min_tls_ld_vers_minor=343
3186 if test "$ld_vers_major" -gt 1 || \
3187 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3193 AC_MSG_RESULT($ld_tls_support)
3196 save_LDFLAGS="$LDFLAGS"
3200 AC_MSG_CHECKING(library containing $tga_func)
3201 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3202 # (32-bit x86) only lived in libthread, so check for that. Keep
3203 # set_have_as_tls if found, disable if not.
3204 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3205 # Clear LIBS if we cannot support TLS.
3206 if test $set_have_as_tls = no; then
3209 # Always define LIB_TLS_SPEC, even without TLS support.
3210 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3211 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3212 AC_MSG_RESULT($LIBS)
3215 LDFLAGS="$save_LDFLAGS"
3218 if test $set_have_as_tls = yes ; then
3219 AC_DEFINE(HAVE_AS_TLS, 1,
3220 [Define if your assembler and linker support thread-local storage.])
3223 # Target-specific assembler checks.
3225 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3226 gcc_cv_ld_static_dynamic=no
3227 gcc_cv_ld_static_option='-Bstatic'
3228 gcc_cv_ld_dynamic_option='-Bdynamic'
3229 if test $in_tree_ld = yes ; then
3230 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3231 gcc_cv_ld_static_dynamic=yes
3233 elif test x$gcc_cv_ld != x; then
3234 # Check if linker supports -Bstatic/-Bdynamic option
3235 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3236 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3237 gcc_cv_ld_static_dynamic=yes
3240 # HP-UX ld uses -a flags to select between shared and archive.
3242 if test x"$gnu_ld" = xno; then
3243 gcc_cv_ld_static_dynamic=yes
3244 gcc_cv_ld_static_option="-aarchive_shared"
3245 gcc_cv_ld_dynamic_option="-adefault"
3248 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3250 gcc_cv_ld_static_dynamic=yes
3255 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3256 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3257 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3258 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3259 [Define to the linker option to disable use of shared objects.])
3260 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3261 [Define to the linker option to enable use of shared objects.])
3263 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3265 if test x"$demangler_in_ld" = xyes; then
3266 AC_MSG_CHECKING(linker --demangle support)
3267 gcc_cv_ld_demangle=no
3268 if test $in_tree_ld = yes; then
3269 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3270 gcc_cv_ld_demangle=yes
3272 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3273 # Check if the GNU linker supports --demangle option
3274 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3275 gcc_cv_ld_demangle=yes
3278 if test x"$gcc_cv_ld_demangle" = xyes; then
3279 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3280 [Define if your linker supports --demangle option.])
3282 AC_MSG_RESULT($gcc_cv_ld_demangle)
3285 AC_MSG_CHECKING(linker plugin support)
3287 if test -f liblto_plugin.la; then
3288 save_ld_ver="$ld_ver"
3289 save_ld_vers_major="$ld_vers_major"
3290 save_ld_vers_minor="$ld_vers_minor"
3291 save_ld_is_gold="$ld_is_gold"
3295 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3297 # FIXME: ld_is_gold?
3298 ld_vers_major="$gcc_cv_gld_major_version"
3299 ld_vers_minor="$gcc_cv_gld_minor_version"
3301 # Determine plugin linker version.
3302 # FIXME: Partial duplicate from above, generalize.
3304 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3305 if echo "$ld_ver" | grep GNU > /dev/null; then
3306 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3308 ld_vers=`echo $ld_ver | sed -n \
3309 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3311 ld_vers=`echo $ld_ver | sed -n \
3312 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3314 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3315 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3320 # Determine plugin support.
3321 if echo "$ld_ver" | grep GNU > /dev/null; then
3322 # Require GNU ld or gold 2.21+ for plugin support by default.
3323 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3325 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3326 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3331 ld_ver="$save_ld_ver"
3332 ld_vers_major="$save_ld_vers_major"
3333 ld_vers_minor="$save_ld_vers_minor"
3334 ld_is_gold="$save_ld_is_gold"
3336 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3337 [Define to the level of your linker's plugin support.])
3338 AC_MSG_RESULT($gcc_cv_lto_plugin)
3341 # All TARGET_ABI_OSF targets.
3342 alpha*-*-linux* | alpha*-*-*bsd*)
3343 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3344 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3347 extbl $3, $2, $3 !lituse_bytoff!1
3348 ldq $2, a($29) !literal!1
3349 ldq $4, b($29) !literal!2
3350 ldq_u $3, 0($2) !lituse_base!1
3351 ldq $27, f($29) !literal!5
3352 jsr $26, ($27), f !lituse_jsr!5
3353 ldah $29, 0($26) !gpdisp!3
3354 lda $0, c($29) !gprel
3355 ldah $1, d($29) !gprelhigh
3356 lda $1, d($1) !gprellow
3357 lda $29, 0($29) !gpdisp!3],,
3358 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3359 [Define if your assembler supports explicit relocations.])])
3360 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3361 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3364 ldq $27, a($29) !literal!1
3365 jsr $26, ($27), a !lituse_jsrdirect!1],,
3366 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3367 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3371 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3372 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3373 [-no-mul-bug-abort], [.text],,
3374 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3375 [Define if your assembler supports the -no-mul-bug-abort option.])])
3379 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3380 [.register %g2, #scratch],,
3381 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3382 [Define if your assembler supports .register.])])
3384 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3386 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3387 [Define if your assembler supports -relax option.])])
3389 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3390 gcc_cv_as_sparc_gotdata_op,,
3397 sethi %gdop_hix22(foo), %g1
3398 xor %g1, %gdop_lox10(foo), %g1
3399 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3400 [if test x$gcc_cv_ld != x \
3401 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3402 if test x$gcc_cv_objdump != x; then
3403 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3404 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3405 gcc_cv_as_sparc_gotdata_op=no
3407 gcc_cv_as_sparc_gotdata_op=yes
3412 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3413 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3415 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3416 gcc_cv_as_sparc_ua_pcrel,,
3424 .uaword %r_disp32(foo)],
3425 [if test x$gcc_cv_ld != x \
3426 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3427 gcc_cv_as_sparc_ua_pcrel=yes
3430 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3431 [Define if your assembler and linker support unaligned PC relative relocs.])
3433 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3434 gcc_cv_as_sparc_ua_pcrel_hidden,,
3439 .uaword %r_disp32(foo)
3440 .byte 0x32, 0x33, 0x34
3445 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3446 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3447 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3448 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3449 if $gcc_cv_objdump -R conftest 2> /dev/null \
3450 | grep 'DISP32' > /dev/null 2>&1; then
3453 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3457 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3458 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3459 ]) # unaligned pcrel relocs
3461 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3462 gcc_cv_as_sparc_offsetable_lo10,,
3465 or %g1, %lo(ab) + 12, %g1
3466 or %g1, %lo(ab + 12), %g1],
3467 [if test x$gcc_cv_objdump != x \
3468 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3469 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3470 gcc_cv_as_sparc_offsetable_lo10=yes
3472 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3473 [Define if your assembler supports offsetable %lo().])])
3475 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3476 gcc_cv_as_sparc_fmaf,,
3479 .register %g2, #scratch
3480 .register %g3, #scratch
3482 fmaddd %f0, %f2, %f4, %f6
3483 addxccc %g1, %g2, %g3
3484 fsrl32 %f2, %f4, %f8
3485 fnaddd %f10, %f12, %f14],,
3486 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3487 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3491 i[34567]86-*-* | x86_64-*-*)
3495 # Full C++ conformance when using a shared libstdc++-v3 requires some
3496 # support from the Cygwin DLL, which in more recent versions exports
3497 # wrappers to aid in interposing and redirecting operators new, delete,
3498 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3499 # are configuring for a version of Cygwin that exports the wrappers.
3500 if test x$host = x$target; then
3501 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3503 # Can't check presence of libc functions during cross-compile, so
3504 # we just have to assume we're building for an up-to-date target.
3505 gcc_ac_cygwin_dll_wrappers=yes
3507 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3508 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3509 [Define if you want to generate code by default that assumes that the
3510 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3513 cygwin* | pe | mingw32* | interix*)
3514 # Recent binutils allows the three-operand form of ".comm" on PE. This
3515 # definition is used unconditionally to initialise the default state of
3516 # the target option variable that governs usage of the feature.
3517 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3518 [2,19,52],,[.comm foo,1,32])
3519 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3520 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3521 [Define if your assembler supports specifying the alignment
3522 of objects allocated using the GAS .comm command.])
3523 # Used for DWARF 2 in PE
3524 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3525 gcc_cv_as_ix86_pe_secrel32,
3531 [if test x$gcc_cv_ld != x \
3532 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3533 gcc_cv_as_ix86_pe_secrel32=yes
3536 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3537 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3538 # Test if the assembler supports the extended form of the .section
3539 # directive that specifies section alignment. LTO support uses this,
3540 # but normally only after installation, so we warn but don't fail the
3541 # configure if LTO is enabled but the assembler does not support it.
3542 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3543 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3544 if test x$gcc_cv_as_section_has_align != xyes; then
3545 case ",$enable_languages," in
3547 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3551 # Test if the assembler supports the section flag 'e' for specifying
3552 # an excluded section.
3553 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3557 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3558 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3559 [Define if your assembler supports specifying the section flag e.])
3563 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3564 gcc_cv_as_ix86_filds,,,
3565 [filds mem; fists mem],,
3566 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3567 [Define if your assembler uses filds and fists mnemonics.])])
3569 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3570 gcc_cv_as_ix86_fildq,,,
3571 [fildq mem; fistpq mem],,
3572 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3573 [Define if your assembler uses fildq and fistq mnemonics.])])
3575 gcc_GAS_CHECK_FEATURE([cmov syntax],
3576 gcc_cv_as_ix86_cmov_sun_syntax,,,
3577 [cmovl.l %edx, %eax],,
3578 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3579 [Define if your assembler supports the Sun syntax for cmov.])])
3581 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3582 gcc_cv_as_ix86_ffreep,,,
3584 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3585 [Define if your assembler supports the ffreep mnemonic.])])
3587 gcc_GAS_CHECK_FEATURE([.quad directive],
3588 gcc_cv_as_ix86_quad,,,
3590 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3591 [Define if your assembler supports the .quad directive.])])
3593 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3594 gcc_cv_as_ix86_sahf,,,
3597 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3598 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3600 gcc_GAS_CHECK_FEATURE([hle prefixes],
3601 gcc_cv_as_ix86_hle,,,
3602 [lock xacquire cmpxchg %esi, (%ecx)],,
3603 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3604 [Define if your assembler supports HLE prefixes.])])
3606 gcc_GAS_CHECK_FEATURE([swap suffix],
3607 gcc_cv_as_ix86_swap,,,
3608 [movl.s %esp, %ebp],,
3609 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3610 [Define if your assembler supports the swap suffix.])])
3612 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3613 gcc_cv_as_ix86_diff_sect_delta,,,
3621 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3622 [Define if your assembler supports the subtraction of symbols in different sections.])])
3624 # These two are used unconditionally by i386.[ch]; it is to be defined
3625 # to 1 if the feature is present, 0 otherwise.
3626 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3627 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3633 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3634 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3635 [Define true if the assembler supports '.long foo@GOTOFF'.])
3637 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3638 gcc_cv_as_ix86_rep_lock_prefix,,,
3644 lock addl %edi, (%eax,%esi)
3645 lock orl $0, (%esp)],,
3646 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3647 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3649 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3650 gcc_cv_as_ix86_tlsgdplt,,,
3651 [call tls_gd@tlsgdplt],
3652 [if test x$gcc_cv_ld != x \
3653 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3654 gcc_cv_as_ix86_tlsgdplt=yes
3657 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3658 [Define if your assembler and linker support @tlsgdplt.])])
3660 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3661 gcc_cv_as_ix86_tlsldmplt,,,
3663 call tls_ld@tlsldmplt],
3664 [if test x$gcc_cv_ld != x \
3665 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3666 gcc_cv_as_ix86_tlsldmplt=yes
3669 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3670 [Define if your assembler and linker support @tlsldmplt.])])
3675 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3676 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3678 addl r15 = @ltoffx(x#), gp
3680 ld8.mov r16 = [[r15]], x#],,
3681 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3682 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3688 *-*-aix*) conftest_s=' .machine "pwr5"
3692 gcc_GAS_CHECK_FEATURE([.machine directive support],
3693 gcc_cv_as_machine_directive,,,
3694 [ .machine ppc7400])
3695 if test x$gcc_cv_as_machine_directive != xyes; then
3696 echo "*** This target requires an assembler supporting \".machine\"" >&2
3697 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3698 test x$build = x$target && exit 1
3702 *) conftest_s=' .machine power4
3707 gcc_GAS_CHECK_FEATURE([mfcr field support],
3708 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3710 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3711 [Define if your assembler supports mfcr field.])])
3714 *-*-aix*) conftest_s=' .machine "pwr5"
3717 *) conftest_s=' .machine power5
3722 gcc_GAS_CHECK_FEATURE([popcntb support],
3723 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3725 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3726 [Define if your assembler supports popcntb field.])])
3729 *-*-aix*) conftest_s=' .machine "pwr5x"
3732 *) conftest_s=' .machine power5
3737 gcc_GAS_CHECK_FEATURE([fp round support],
3738 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3740 [AC_DEFINE(HAVE_AS_FPRND, 1,
3741 [Define if your assembler supports fprnd.])])
3744 *-*-aix*) conftest_s=' .machine "pwr6"
3747 *) conftest_s=' .machine power6
3752 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3753 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3755 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3756 [Define if your assembler supports mffgpr and mftgpr.])])
3759 *-*-aix*) conftest_s=' .csect .text[[PR]]
3761 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3765 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3766 *) conftest_s=' .text
3768 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3771 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3772 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3774 [AC_DEFINE(HAVE_AS_REL16, 1,
3775 [Define if your assembler supports R_PPC_REL16 relocs.])])
3778 *-*-aix*) conftest_s=' .machine "pwr6"
3781 *) conftest_s=' .machine power6
3786 gcc_GAS_CHECK_FEATURE([compare bytes support],
3787 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3789 [AC_DEFINE(HAVE_AS_CMPB, 1,
3790 [Define if your assembler supports cmpb.])])
3793 *-*-aix*) conftest_s=' .machine "pwr6"
3796 *) conftest_s=' .machine power6
3801 gcc_GAS_CHECK_FEATURE([decimal float support],
3802 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3804 [AC_DEFINE(HAVE_AS_DFP, 1,
3805 [Define if your assembler supports DFP instructions.])])
3808 *-*-aix*) conftest_s=' .machine "pwr7"
3811 *) conftest_s=' .machine power7
3816 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3817 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3819 [AC_DEFINE(HAVE_AS_VSX, 1,
3820 [Define if your assembler supports VSX instructions.])])
3823 *-*-aix*) conftest_s=' .machine "pwr7"
3826 *) conftest_s=' .machine power7
3831 gcc_GAS_CHECK_FEATURE([popcntd support],
3832 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3834 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3835 [Define if your assembler supports POPCNTD instructions.])])
3838 *-*-aix*) conftest_s=' .csect .text[[PR]]
3840 *) conftest_s=' .text
3844 gcc_GAS_CHECK_FEATURE([lwsync support],
3845 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3847 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3848 [Define if your assembler supports LWSYNC instructions.])])
3851 *-*-aix*) conftest_s=' .machine "476"
3854 *) conftest_s=' .machine "476"
3859 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3860 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3862 [AC_DEFINE(HAVE_AS_DCI, 1,
3863 [Define if your assembler supports the DCI/ICI instructions.])])
3865 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3866 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3867 [.gnu_attribute 4,1],,
3868 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3869 [Define if your assembler supports .gnu_attribute.])])
3871 gcc_GAS_CHECK_FEATURE([tls marker support],
3872 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3873 [ bl __tls_get_addr(x@tlsgd)],,
3874 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3875 [Define if your assembler supports arg info for __tls_get_addr.])])
3879 gcc_GAS_CHECK_FEATURE([.ref support],
3880 gcc_cv_as_aix_ref, [2.21.0],,
3881 [ .csect stuff[[rw]]
3887 [AC_DEFINE(HAVE_AS_REF, 1,
3888 [Define if your assembler supports .ref])])
3894 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3895 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3896 [ lw $4,%gp_rel(foo)($4)],,
3897 [if test x$target_cpu_default = x
3898 then target_cpu_default=MASK_EXPLICIT_RELOCS
3899 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3901 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3902 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3903 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3904 [Define if the assembler understands -mno-shared.])])
3906 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3907 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3908 [.gnu_attribute 4,1],,
3909 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3910 [Define if your assembler supports .gnu_attribute.])])
3912 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3913 gcc_cv_as_mips_dtprelword, [2,18,0],,
3914 [.section .tdata,"awT",@progbits
3918 .dtprelword x+0x8000],,
3919 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3920 [Define if your assembler supports .dtprelword.])])
3922 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3923 gcc_cv_as_mips_dspr1_mult,,,
3933 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3934 [Define if your assembler supports DSPR1 mult.])])
3936 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3937 gcc_cv_as_ld_jalr_reloc=no
3938 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3939 if test $in_tree_ld = yes ; then
3940 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3941 && test $in_tree_ld_is_elf = yes; then
3942 gcc_cv_as_ld_jalr_reloc=yes
3944 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3945 echo ' .ent x' > conftest.s
3946 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3947 echo ' ld $25,%call16(y)($28)' >> conftest.s
3948 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3949 echo '1: jalr $25' >> conftest.s
3950 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3951 echo '1: jalr $25' >> conftest.s
3952 echo ' .end x' >> conftest.s
3953 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3954 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3955 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3956 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3957 gcc_cv_as_ld_jalr_reloc=yes
3963 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3964 if test x$target_cpu_default = x; then
3965 target_cpu_default=MASK_RELAX_PIC_CALLS
3967 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3970 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3972 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3973 [gcc_cv_ld_mips_personality_relaxation],
3974 [gcc_cv_ld_mips_personality_relaxation=no
3975 if test $in_tree_ld = yes ; then
3976 if test "$gcc_cv_gld_major_version" -eq 2 \
3977 -a "$gcc_cv_gld_minor_version" -ge 21 \
3978 -o "$gcc_cv_gld_major_version" -gt 2; then
3979 gcc_cv_ld_mips_personality_relaxation=yes
3981 elif test x$gcc_cv_as != x \
3982 -a x$gcc_cv_ld != x \
3983 -a x$gcc_cv_readelf != x ; then
3984 cat > conftest.s <<EOF
3986 .cfi_personality 0x80,indirect_ptr
3993 .section .data,"aw",@progbits
3997 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3998 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3999 if $gcc_cv_readelf -d conftest 2>&1 \
4000 | grep TEXTREL > /dev/null 2>&1; then
4002 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4003 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4006 gcc_cv_ld_mips_personality_relaxation=yes
4010 rm -f conftest.s conftest.o conftest])
4011 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4012 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4013 [Define if your linker can relax absolute .eh_frame personality
4014 pointers into PC-relative form.])
4019 # Mips and HP-UX need the GNU assembler.
4020 # Linux on IA64 might be able to use the Intel assembler.
4023 mips*-*-* | *-*-hpux* )
4024 if test x$gas_flag = xyes \
4025 || test x"$host" != x"$build" \
4026 || test ! -x "$gcc_cv_as" \
4027 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4030 echo "*** This configuration requires the GNU assembler" >&2
4036 # ??? Not all targets support dwarf2 debug_line, even within a version
4037 # of gas. Moreover, we need to emit a valid instruction to trigger any
4038 # info to the output file. So, as supported targets are added to gas 2.11,
4039 # add some instruction here to (also) show we expect this might work.
4040 # ??? Once 2.11 is released, probably need to add first known working
4041 # version to the per-target configury.
4043 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4044 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4054 if test x"$insn" != x; then
4056 .file 1 \"conftest.s\"
4059 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4060 gcc_cv_as_dwarf2_debug_line,
4061 [elf,2,11,0],, [$conftest_s],
4062 [if test x$gcc_cv_objdump != x \
4063 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4064 | grep debug_line > /dev/null 2>&1; then
4065 gcc_cv_as_dwarf2_debug_line=yes
4068 # The .debug_line file table must be in the exact order that
4069 # we specified the files, since these indices are also used
4070 # by DW_AT_decl_file. Approximate this test by testing if
4071 # the assembler bitches if the same index is assigned twice.
4072 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4073 gcc_cv_as_dwarf2_file_buggy,,,
4077 if test $gcc_cv_as_dwarf2_debug_line = yes \
4078 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4079 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4080 [Define if your assembler supports dwarf2 .file/.loc directives,
4081 and preserves file table indices exactly as given.])
4084 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4085 gcc_cv_as_gdwarf2_flag,
4086 [elf,2,11,0], [--gdwarf2], [$insn],,
4087 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4088 [Define if your assembler supports the --gdwarf2 option.])])
4090 gcc_GAS_CHECK_FEATURE([--gstabs option],
4091 gcc_cv_as_gstabs_flag,
4092 [elf,2,11,0], [--gstabs], [$insn],
4093 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4094 # and warns about it, but still exits successfully. So check for
4096 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4098 else gcc_cv_as_gstabs_flag=yes
4100 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4101 [Define if your assembler supports the --gstabs option.])])
4103 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4104 gcc_cv_as_debug_prefix_map_flag,
4105 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4106 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4107 [Define if your assembler supports the --debug-prefix-map option.])])
4110 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4113 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4114 [Define if your assembler supports .lcomm with an alignment field.])])
4116 AC_ARG_ENABLE(gnu-unique-object,
4117 [AS_HELP_STRING([--enable-gnu-unique-object],
4118 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4119 [case $enable_gnu_unique_object in
4121 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4122 Valid choices are 'yes' and 'no'.]) ;;
4124 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4126 [.type foo, '$target_type_format_char'gnu_unique_object],,
4127 # We need to unquote above to to use the definition from config.gcc.
4128 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4129 [[if test x$host = x$build -a x$host = x$target &&
4130 ldd --version 2>/dev/null &&
4131 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4132 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4133 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4134 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4135 if test "$glibcnum" -ge 2011 ; then
4136 enable_gnu_unique_object=yes
4139 if test x$enable_gnu_unique_object = xyes; then
4140 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4141 [Define if your assembler supports @gnu_unique_object.])
4144 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4145 [gcc_cv_as_line_zero],
4146 [gcc_cv_as_line_zero=no
4147 if test $in_tree_gas = yes; then
4148 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4149 elif test "x$gcc_cv_as" != x; then
4150 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4151 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4152 test "x`cat conftest.out`" = x
4154 gcc_cv_as_line_zero=yes
4156 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4157 cat conftest.s >&AS_MESSAGE_LOG_FD
4158 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4159 cat conftest.out >&AS_MESSAGE_LOG_FD
4161 rm -f conftest.o conftest.s conftest.out
4163 if test "x$gcc_cv_as_line_zero" = xyes; then
4164 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4165 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4168 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4169 gcc_cv_ld_eh_frame_hdr=no
4170 if test $in_tree_ld = yes ; then
4171 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4172 && test $in_tree_ld_is_elf = yes; then
4173 gcc_cv_ld_eh_frame_hdr=yes
4175 elif test x$gcc_cv_ld != x; then
4176 if echo "$ld_ver" | grep GNU > /dev/null; then
4177 # Check if linker supports --eh-frame-hdr option
4178 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4179 gcc_cv_ld_eh_frame_hdr=yes
4184 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4185 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4186 gcc_cv_ld_eh_frame_hdr=yes
4192 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4193 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4194 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4195 [Define if your linker supports .eh_frame_hdr.])
4197 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4199 AC_MSG_CHECKING(linker position independent executable support)
4201 if test $in_tree_ld = yes ; then
4202 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4203 && test $in_tree_ld_is_elf = yes; then
4206 elif test x$gcc_cv_ld != x; then
4207 # Check if linker supports -pie option
4208 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4212 if test x"$gcc_cv_ld_pie" = xyes; then
4213 AC_DEFINE(HAVE_LD_PIE, 1,
4214 [Define if your linker supports -pie option.])
4216 AC_MSG_RESULT($gcc_cv_ld_pie)
4218 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4219 gcc_cv_ld_eh_gc_sections=no
4220 if test $in_tree_ld = yes ; then
4221 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4222 && test $in_tree_ld_is_elf = yes; then
4223 gcc_cv_ld_eh_gc_sections=yes
4225 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4226 cat > conftest.s <<EOF
4229 .type _start, @function
4232 .size _start, .-_start
4233 .section .text.foo,"ax",@progbits
4234 .type foo, @function
4238 .section .gcc_except_table.foo,"a",@progbits
4241 .section .eh_frame,"a",@progbits
4244 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4245 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4246 | grep "gc-sections option ignored" > /dev/null; then
4247 gcc_cv_ld_eh_gc_sections=no
4248 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4249 | grep gcc_except_table > /dev/null; then
4250 gcc_cv_ld_eh_gc_sections=yes
4251 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4252 if test x$gcc_cv_as_comdat_group != xyes; then
4253 gcc_cv_ld_eh_gc_sections=no
4254 cat > conftest.s <<EOF
4257 .type _start, @function
4260 .size _start, .-_start
4261 .section .gnu.linkonce.t.foo,"ax",@progbits
4262 .type foo, @function
4266 .section .gcc_except_table.foo,"a",@progbits
4269 .section .eh_frame,"a",@progbits
4272 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4273 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4274 | grep "gc-sections option ignored" > /dev/null; then
4275 gcc_cv_ld_eh_gc_sections=no
4276 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4277 | grep gcc_except_table > /dev/null; then
4278 gcc_cv_ld_eh_gc_sections=yes
4284 rm -f conftest.s conftest.o conftest
4288 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4289 gcc_cv_ld_eh_gc_sections=no
4292 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4293 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4294 [Define if your linker supports garbage collection of
4295 sections in presence of EH frames.])
4297 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4299 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4300 gcc_cv_ld_eh_gc_sections_bug=no
4301 if test $in_tree_ld = yes ; then
4302 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4303 && test $in_tree_ld_is_elf = yes; then
4304 gcc_cv_ld_eh_gc_sections_bug=yes
4306 elif test x$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
4307 gcc_cv_ld_eh_gc_sections_bug=yes
4308 cat > conftest.s <<EOF
4311 .type _start, @function
4314 .size _start, .-_start
4315 .section .text.startup.foo,"ax",@progbits
4316 .type foo, @function
4320 .section .gcc_except_table.foo,"a",@progbits
4323 .section .eh_frame,"a",@progbits
4326 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4327 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4328 | grep "gc-sections option ignored" > /dev/null; then
4330 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4331 | grep gcc_except_table > /dev/null; then
4332 gcc_cv_ld_eh_gc_sections_bug=no
4335 rm -f conftest.s conftest.o conftest
4337 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4338 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4339 [Define if your linker has buggy garbage collection of
4340 sections support when .text.startup.foo like sections are used.])
4342 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4348 AC_CACHE_CHECK(linker --as-needed support,
4349 gcc_cv_ld_as_needed,
4350 [gcc_cv_ld_as_needed=no
4351 if test $in_tree_ld = yes ; then
4352 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4353 && test $in_tree_ld_is_elf = yes; then
4354 gcc_cv_ld_as_needed=yes
4356 elif test x$gcc_cv_ld != x; then
4357 # Check if linker supports --as-needed and --no-as-needed options
4358 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4359 gcc_cv_ld_as_needed=yes
4363 if test x"$gcc_cv_ld_as_needed" = xyes; then
4364 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4365 [Define if your linker supports --as-needed and --no-as-needed options.])
4368 case "$target:$tm_file" in
4369 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4372 emul_name="-melf64ppc"
4375 emul_name="-melf64ppc_fbsd"
4378 AC_CACHE_CHECK(linker support for omitting dot symbols,
4379 gcc_cv_ld_no_dot_syms,
4380 [gcc_cv_ld_no_dot_syms=no
4381 if test $in_tree_ld = yes ; then
4382 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4383 gcc_cv_ld_no_dot_syms=yes
4385 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4386 cat > conftest1.s <<EOF
4390 cat > conftest2.s <<EOF
4391 .section ".opd","aw"
4396 .quad .LEfoo,.TOC.@tocbase,0
4402 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4403 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4404 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4405 gcc_cv_ld_no_dot_syms=yes
4407 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4410 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4411 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4412 [Define if your PowerPC64 linker only needs function descriptor syms.])
4415 AC_CACHE_CHECK(linker large toc support,
4416 gcc_cv_ld_large_toc,
4417 [gcc_cv_ld_large_toc=no
4418 if test $in_tree_ld = yes ; then
4419 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4420 gcc_cv_ld_large_toc=yes
4422 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4423 cat > conftest.s <<EOF
4424 .section ".tbss","awT",@nobits
4430 addis 9,13,ie0@got@tprel@ha
4431 ld 9,ie0@got@tprel@l(9)
4433 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4434 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4435 gcc_cv_ld_large_toc=yes
4437 rm -f conftest conftest.o conftest.s
4440 if test x"$gcc_cv_ld_large_toc" = xyes; then
4441 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4442 [Define if your PowerPC64 linker supports a large TOC.])
4447 AC_CACHE_CHECK(linker --build-id support,
4449 [gcc_cv_ld_buildid=no
4450 if test $in_tree_ld = yes ; then
4451 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4452 "$gcc_cv_gld_minor_version" -ge 18 -o \
4453 "$gcc_cv_gld_major_version" -gt 2 \
4454 && test $in_tree_ld_is_elf = yes; then
4455 gcc_cv_ld_buildid=yes
4457 elif test x$gcc_cv_ld != x; then
4458 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4459 gcc_cv_ld_buildid=yes
4462 if test x"$gcc_cv_ld_buildid" = xyes; then
4463 AC_DEFINE(HAVE_LD_BUILDID, 1,
4464 [Define if your linker supports --build-id.])
4467 AC_ARG_ENABLE(linker-build-id,
4468 [AS_HELP_STRING([--enable-linker-build-id],
4469 [compiler will always pass --build-id to linker])],
4471 enable_linker_build_id=no)
4473 if test x"$enable_linker_build_id" = xyes; then
4474 if test x"$gcc_cv_ld_buildid" = xyes; then
4475 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4476 [Define if gcc should always pass --build-id to linker.])
4478 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4482 # In binutils 2.21, GNU ld gained support for new emulations fully
4483 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4484 AC_CACHE_CHECK(linker *_sol2 emulation support,
4485 gcc_cv_ld_sol2_emulation,
4486 [gcc_cv_ld_sol2_emulation=no
4487 if test $in_tree_ld = yes ; then
4488 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4489 "$gcc_cv_gld_minor_version" -ge 21 -o \
4490 "$gcc_cv_gld_major_version" -gt 2 \
4491 && test $in_tree_ld_is_elf = yes; then
4492 gcc_cv_ld_sol2_emulation=yes
4494 elif test x$gcc_cv_ld != x; then
4495 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4496 grep _sol2 > /dev/null; then
4497 gcc_cv_ld_sol2_emulation=yes
4500 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4501 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4502 [Define if your linker supports the *_sol2 emulations.])
4505 AC_CACHE_CHECK(linker --sysroot support,
4507 [gcc_cv_ld_sysroot=no
4508 if test $in_tree_ld = yes ; then
4509 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4510 gcc_cv_ld_sysroot=yes
4512 elif test x$gcc_cv_ld != x; then
4513 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4514 gcc_cv_ld_sysroot=yes
4517 if test x"$gcc_cv_ld_sysroot" = xyes; then
4518 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4519 [Define if your linker supports --sysroot.])
4522 if test x$with_sysroot = x && test x$host = x$target \
4523 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4524 && test "$prefix" != "NONE"; then
4525 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4526 [Define to PREFIX/include if cpp should also search that directory.])
4529 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4530 if test "x$with_headers" != x; then
4531 target_header_dir=$with_headers
4532 elif test "x$with_sysroot" = x; then
4533 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4534 elif test "x$with_build_sysroot" != "x"; then
4535 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4536 elif test "x$with_sysroot" = xyes; then
4537 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4539 target_header_dir="${with_sysroot}${native_system_header_dir}"
4542 target_header_dir=${native_system_header_dir}
4545 # Test for stack protector support in target C library.
4546 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4547 gcc_cv_libc_provides_ssp,
4548 [gcc_cv_libc_provides_ssp=no
4550 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4551 [# glibc 2.4 and later provides __stack_chk_fail and
4552 # either __stack_chk_guard, or TLS access to stack guard canary.
4553 if test -f $target_header_dir/features.h \
4554 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4555 $target_header_dir/features.h > /dev/null; then
4556 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4557 $target_header_dir/features.h > /dev/null; then
4558 gcc_cv_libc_provides_ssp=yes
4559 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4560 $target_header_dir/features.h > /dev/null \
4561 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4562 $target_header_dir/features.h > /dev/null; then
4563 gcc_cv_libc_provides_ssp=yes
4564 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4565 $target_header_dir/features.h > /dev/null && \
4566 test -f $target_header_dir/bits/uClibc_config.h && \
4567 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4568 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4569 gcc_cv_libc_provides_ssp=yes
4571 # all versions of Bionic support stack protector
4572 elif test -f $target_header_dir/sys/cdefs.h \
4573 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4574 $target_header_dir/sys/cdefs.h > /dev/null; then
4575 gcc_cv_libc_provides_ssp=yes
4579 # Avoid complicated tests (see
4580 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4581 # simply assert that glibc does provide this, which is true for all
4582 # realistically usable GNU/Hurd configurations.
4583 gcc_cv_libc_provides_ssp=yes;;
4584 *-*-darwin* | *-*-freebsd*)
4585 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4586 [echo "no __stack_chk_fail on this target"])
4588 *) gcc_cv_libc_provides_ssp=no ;;
4591 if test x$gcc_cv_libc_provides_ssp = xyes; then
4592 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4593 [Define if your target C library provides stack protector support])
4596 # Test for <sys/sdt.h> on the target.
4597 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4598 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4600 if test -f $target_header_dir/sys/sdt.h; then
4602 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4603 [Define if your target C library provides sys/sdt.h])
4605 AC_MSG_RESULT($have_sys_sdt_h)
4607 # Check if TFmode long double should be used by default or not.
4608 # Some glibc targets used DFmode long double, but with glibc 2.4
4609 # and later they can use TFmode.
4611 powerpc*-*-linux* | \
4615 AC_ARG_WITH(long-double-128,
4616 [AS_HELP_STRING([--with-long-double-128],
4617 [use 128-bit long double by default])],
4618 gcc_cv_target_ldbl128="$with_long_double_128",
4619 [[gcc_cv_target_ldbl128=no
4620 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4621 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4622 && gcc_cv_target_ldbl128=yes
4626 if test x$gcc_cv_target_ldbl128 = xyes; then
4627 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4628 [Define if TFmode long double should be the default])
4631 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4632 gcc_cv_target_dl_iterate_phdr=unknown
4634 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4635 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4636 # libdl there, both complicating its use and breaking compatibility
4637 # between Solaris 10 updates.
4638 *-*-solaris2.1[[1-9]]*)
4639 # <link.h> needs both a dl_iterate_phdr declaration and support for
4640 # compilation with largefile support.
4641 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4642 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4643 gcc_cv_target_dl_iterate_phdr=yes
4645 gcc_cv_target_dl_iterate_phdr=no
4649 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4650 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4651 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4652 [Define if your target C library provides the `dl_iterate_phdr' function.])
4654 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4656 # Find out what GC implementation we want, or may, use.
4658 [AS_HELP_STRING([--with-gc={page,zone}],
4659 [choose the garbage collection mechanism to use
4660 with the compiler])],
4667 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4670 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4675 echo "Using $GGC for garbage collection."
4677 # Libraries to use on the host. This will normally be set by the top
4678 # level Makefile. Here we simply capture the value for our Makefile.
4679 if test -z "${HOST_LIBS+set}"; then
4684 # Use the system's zlib library.
4686 zlibinc="-I\$(srcdir)/../zlib"
4687 AC_ARG_WITH(system-zlib,
4688 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4695 dnl Very limited version of automake's enable-maintainer-mode
4697 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4698 dnl maintainer-mode is disabled by default
4699 AC_ARG_ENABLE(maintainer-mode,
4700 [AS_HELP_STRING([--enable-maintainer-mode],
4701 [enable make rules and dependencies not useful
4702 (and sometimes confusing) to the casual installer])],
4703 maintainer_mode=$enableval,
4706 AC_MSG_RESULT($maintainer_mode)
4708 if test "$maintainer_mode" = "yes"; then
4719 # Make empty files to contain the specs and options for each language.
4720 # Then add #include lines to for a compiler that has specs and/or options.
4726 # These (without "all_") are set in each config-lang.in.
4727 # `language' must be a single word so is spelled singularly.
4730 all_outputs='Makefile'
4731 # List of language makefile fragments.
4733 # Additional files for gengtype
4734 all_gtfiles="$target_gtfiles"
4736 # These are the languages that are set in --enable-languages,
4737 # and are available in the GCC tree.
4738 all_selected_languages=
4740 # Add the language fragments.
4741 # Languages are added via two mechanisms. Some information must be
4742 # recorded in makefile variables, these are defined in config-lang.in.
4743 # We accumulate them and plug them into the main Makefile.
4744 # The other mechanism is a set of hooks for each of the main targets
4745 # like `clean', `install', etc.
4747 language_hooks="Make-hooks"
4749 for lang in ${srcdir}/*/config-lang.in
4752 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4754 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4755 if test "x$lang_alias" = x
4757 echo "$lang doesn't set \$language." 1>&2
4760 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4761 subdirs="$subdirs $subdir"
4763 # $gcc_subdir is where the gcc integration files are to be found
4764 # for a language, both for internal compiler purposes (compiler
4765 # sources implementing front-end to GCC tree converters), and for
4766 # build infrastructure purposes (Make-lang.in, etc.)
4768 # This will be <subdir> (relative to $srcdir) if a line like
4769 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4770 # is found in <langdir>/config-lang.in, and will remain <langdir>
4773 # Except for the language alias (fetched above), the regular
4774 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4775 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4776 # only this and the language alias.
4778 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4779 if [ "$gcc_subdir" = "" ]; then
4780 gcc_subdir="$subdir"
4783 case ",$enable_languages," in
4785 all_selected_languages="$all_selected_languages $lang_alias"
4786 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4787 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4799 . ${srcdir}/$gcc_subdir/config-lang.in
4800 if test "x$language" = x
4802 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4807 case ",$enable_languages," in
4810 for i in $subdir_requires; do
4811 test -f "${srcdir}/$i/config-lang.in" && continue
4819 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4820 if test -f $srcdir/$gcc_subdir/lang.opt; then
4821 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4822 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4824 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4825 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4827 all_languages="$all_languages $language"
4828 all_compilers="$all_compilers $compilers"
4829 all_outputs="$all_outputs $outputs"
4830 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4831 case ",$enable_languages," in
4833 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4835 AC_SUBST(enable_lto)
4842 for language in $all_selected_languages
4844 check_languages="$check_languages check-$language"
4847 # We link each language in with a set of hooks, reached indirectly via
4848 # lang.${target}. Only do so for selected languages.
4852 target_list="all.cross start.encap rest.encap tags \
4853 install-common install-man install-info install-pdf install-html dvi \
4854 pdf html uninstall info man srcextra srcman srcinfo \
4855 mostlyclean clean distclean maintainer-clean install-plugin"
4857 for t in $target_list
4860 for lang in $all_selected_languages
4864 echo "lang.$t: $x" >> Make-hooks
4868 # Option include files
4871 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4872 option_includes="option-includes.mk"
4873 AC_SUBST_FILE(option_includes)
4881 echo "dir ." > .gdbinit
4882 echo "dir ${srcdir}" >> .gdbinit
4883 if test x$gdb_needs_out_file_path = xyes
4885 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4887 if test "x$subdirs" != x; then
4890 echo "dir ${srcdir}/$s" >> .gdbinit
4893 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4895 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4896 AC_SUBST(gcc_tooldir)
4899 # Find a directory in which to install a shared libgcc.
4901 AC_ARG_ENABLE(version-specific-runtime-libs,
4902 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4903 [specify that runtime libraries should be
4904 installed in a compiler-specific directory])])
4906 # Substitute configuration variables
4909 AC_SUBST(all_compilers)
4910 AC_SUBST(all_gtfiles)
4911 AC_SUBST(all_lang_makefrags)
4912 AC_SUBST(all_languages)
4913 AC_SUBST(all_selected_languages)
4914 AC_SUBST(build_exeext)
4915 AC_SUBST(build_install_headers_dir)
4916 AC_SUBST(build_xm_file_list)
4917 AC_SUBST(build_xm_include_list)
4918 AC_SUBST(build_xm_defines)
4919 AC_SUBST(build_file_translate)
4920 AC_SUBST(check_languages)
4921 AC_SUBST(cpp_install_dir)
4922 AC_SUBST(xmake_file)
4923 AC_SUBST(tmake_file)
4924 AC_SUBST(TM_ENDIAN_CONFIG)
4925 AC_SUBST(TM_MULTILIB_CONFIG)
4926 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4927 AC_SUBST(extra_gcc_objs)
4928 AC_SUBST(user_headers_inc_next_pre)
4929 AC_SUBST(user_headers_inc_next_post)
4930 AC_SUBST(extra_headers_list)
4931 AC_SUBST(extra_objs)
4932 AC_SUBST(extra_programs)
4933 AC_SUBST(float_h_file)
4934 AC_SUBST(gcc_config_arguments)
4935 AC_SUBST(gcc_gxx_include_dir)
4936 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
4937 AC_SUBST(host_exeext)
4938 AC_SUBST(host_xm_file_list)
4939 AC_SUBST(host_xm_include_list)
4940 AC_SUBST(host_xm_defines)
4941 AC_SUBST(out_host_hook_obj)
4943 AC_SUBST(lang_opt_files)
4944 AC_SUBST(lang_specs_files)
4945 AC_SUBST(lang_tree_files)
4946 AC_SUBST(local_prefix)
4948 AC_SUBST(objc_boehm_gc)
4950 AC_SUBST(out_object_file)
4951 AC_SUBST(common_out_file)
4952 AC_SUBST(common_out_object_file)
4953 AC_SUBST(tm_file_list)
4954 AC_SUBST(tm_include_list)
4955 AC_SUBST(tm_defines)
4956 AC_SUBST(tm_p_file_list)
4957 AC_SUBST(tm_p_include_list)
4958 AC_SUBST(xm_file_list)
4959 AC_SUBST(xm_include_list)
4960 AC_SUBST(xm_defines)
4961 AC_SUBST(use_gcc_stdint)
4962 AC_SUBST(c_target_objs)
4963 AC_SUBST(cxx_target_objs)
4964 AC_SUBST(fortran_target_objs)
4965 AC_SUBST(target_cpu_default)
4967 AC_SUBST_FILE(language_hooks)
4970 if test x${build} = x${host} ; then
4971 if test x${host} = x${target} ; then
4972 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4974 echo "Links are now set up to build a cross-compiler" 1>&2
4975 echo " from ${host} to ${target}." 1>&2
4978 if test x${host} = x${target} ; then
4979 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4980 echo " for ${target}." 1>&2
4982 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4983 echo " from ${host} to ${target}." 1>&2
4987 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4988 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4990 AC_ARG_VAR(ISLLIBS,[How to link ISL])
4991 AC_ARG_VAR(ISLINC,[How to find ISL include files])
4993 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4994 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4995 if test "x${CLOOGLIBS}" != "x" ; then
4996 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4999 # Check for plugin support
5000 AC_ARG_ENABLE(plugin,
5001 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5002 enable_plugin=$enableval,
5003 enable_plugin=yes; default_plugin=yes)
5009 if test x$build = x$host; then
5010 export_sym_check="nm${exeext} -g"
5011 elif test x$host = x$target; then
5012 export_sym_check="$gcc_cv_nm -g"
5018 if test x$build = x$host; then
5019 export_sym_check="objdump${exeext} -T"
5020 elif test x$host = x$target; then
5021 export_sym_check="$gcc_cv_objdump -T"
5028 if test x"$enable_plugin" = x"yes"; then
5030 AC_MSG_CHECKING([for exported symbols])
5031 if test "x$export_sym_check" != x; then
5032 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5033 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5034 if $export_sym_check conftest | grep foobar > /dev/null; then
5035 : # No need to use a flag
5036 AC_MSG_RESULT([yes])
5038 AC_MSG_RESULT([yes])
5039 AC_MSG_CHECKING([for -rdynamic])
5040 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5041 if $export_sym_check conftest | grep foobar > /dev/null; then
5043 pluginlibs="-rdynamic"
5048 AC_MSG_RESULT([$plugin_rdynamic])
5051 AC_MSG_RESULT([unable to check])
5056 AC_SEARCH_LIBS([dlopen], [dl])
5057 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5058 pluginlibs="$pluginlibs -ldl"
5062 # Check that we can build shared objects with -fPIC -shared
5063 saved_LDFLAGS="$LDFLAGS"
5064 saved_CFLAGS="$CFLAGS"
5067 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5068 CFLAGS="$CFLAGS -fPIC"
5069 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5072 CFLAGS="$CFLAGS -fPIC"
5073 LDFLAGS="$LDFLAGS -fPIC -shared"
5076 AC_MSG_CHECKING([for -fPIC -shared])
5078 [extern int X;],[return X == 0;],
5079 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5080 [AC_MSG_RESULT([no]); have_pic_shared=no])
5081 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5085 LDFLAGS="$saved_LDFLAGS"
5086 CFLAGS="$saved_CFLAGS"
5088 # If plugin support had been requested but not available, fail.
5089 if test x"$enable_plugin" = x"no" ; then
5090 if test x"$default_plugin" != x"yes"; then
5092 Building GCC with plugin support requires a host that supports
5093 -fPIC, -shared, -ldl and -rdynamic.])
5098 AC_SUBST(pluginlibs)
5099 AC_SUBST(enable_plugin)
5100 if test x"$enable_plugin" = x"yes"; then
5101 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5105 AC_ARG_ENABLE(libquadmath-support,
5106 [AS_HELP_STRING([--disable-libquadmath-support],
5107 [disable libquadmath support for Fortran])],
5108 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5109 ENABLE_LIBQUADMATH_SUPPORT=yes)
5110 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5111 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5112 [Define to 1 to enable libquadmath support])
5116 # Specify what hash style to use by default.
5117 AC_ARG_WITH([linker-hash-style],
5118 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5119 [specify the linker hash style])],
5120 [case x"$withval" in
5122 LINKER_HASH_STYLE=sysv
5125 LINKER_HASH_STYLE=gnu
5128 LINKER_HASH_STYLE=both
5131 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5134 [LINKER_HASH_STYLE=''])
5135 if test x"${LINKER_HASH_STYLE}" != x; then
5136 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5137 [The linker hash style])
5140 # Configure the subdirectories
5141 # AC_CONFIG_SUBDIRS($subdirs)
5143 # Create the Makefile
5144 # and configure language subdirectories
5145 AC_CONFIG_FILES($all_outputs)
5147 AC_CONFIG_COMMANDS([default],
5149 case ${CONFIG_HEADERS} in
5150 *auto-host.h:config.in*)
5153 # Make sure all the subdirs exist.
5154 for d in $subdirs doc build common c-family
5156 test -d $d || mkdir $d
5159 [subdirs='$subdirs'])