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 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)$libstdcxx_incdir"
148 AC_ARG_WITH(cpp_install_dir,
149 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
150 [install the user visible C preprocessor in DIR
151 (relative to PREFIX) as well as PREFIX/bin])],
152 [if test x$withval = xyes; then
153 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
154 elif test x$withval != xno; then
155 cpp_install_dir=$withval
158 # We would like to our source tree to be readonly. However when releases or
159 # pre-releases are generated, the flex/bison generated files as well as the
160 # various formats of manuals need to be included along with the rest of the
161 # sources. Therefore we have --enable-generated-files-in-srcdir to do
164 AC_MSG_CHECKING([whether to place generated files in the source directory])
165 dnl generated-files-in-srcdir is disabled by default
166 AC_ARG_ENABLE(generated-files-in-srcdir,
167 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
168 [put copies of generated files in source dir
169 intended for creating source tarballs for users
170 without texinfo bison or flex])],
171 generated_files_in_srcdir=$enableval,
172 generated_files_in_srcdir=no)
174 AC_MSG_RESULT($generated_files_in_srcdir)
176 if test "$generated_files_in_srcdir" = "yes"; then
183 # -------------------
184 # Find default linker
185 # -------------------
189 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
190 gnu_ld_flag="$with_gnu_ld",
193 # With pre-defined ld
195 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
196 DEFAULT_LINKER="$with_ld")
197 if test x"${DEFAULT_LINKER+set}" = x"set"; then
198 if test ! -x "$DEFAULT_LINKER"; then
199 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
200 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
203 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
204 [Define to enable the use of a default linker.])
207 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
208 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
210 AC_MSG_CHECKING([whether a default linker was specified])
211 if test x"${DEFAULT_LINKER+set}" = x"set"; then
212 if test x"$gnu_ld_flag" = x"no"; then
213 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
221 # With demangler in GNU ld
222 AC_ARG_WITH(demangler-in-ld,
223 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
224 demangler_in_ld="$with_demangler_in_ld",
227 # ----------------------
228 # Find default assembler
229 # ----------------------
233 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
234 gas_flag="$with_gnu_as",
238 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
239 DEFAULT_ASSEMBLER="$with_as")
240 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
241 if test ! -x "$DEFAULT_ASSEMBLER"; then
242 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
243 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
246 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
247 [Define to enable the use of a default assembler.])
250 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
251 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
253 AC_MSG_CHECKING([whether a default assembler was specified])
254 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
255 if test x"$gas_flag" = x"no"; then
256 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
268 # If a non-executable a.out is present (e.g. created by GNU as above even if
269 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
270 # file, even when creating an executable, so an execution test fails.
271 # Remove possible default executable files to avoid this.
273 # FIXME: This really belongs into AC_PROG_CC and can be removed once
274 # Autoconf includes it.
275 rm -f a.out a.exe b.out
277 # Find the native compiler
281 ACX_PROG_GNAT([-I"$srcdir"/ada])
283 # autoconf is lame and doesn't give us any substitution variable for this.
284 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
285 NO_MINUS_C_MINUS_O=yes
287 OUTPUT_OPTION='-o $@'
289 AC_SUBST(NO_MINUS_C_MINUS_O)
290 AC_SUBST(OUTPUT_OPTION)
292 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
293 # optimizations to be activated explicitly by the toplevel.
296 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
300 # Determine PICFLAG for target gnatlib.
301 GCC_PICFLAG_FOR_TARGET
302 AC_SUBST(PICFLAG_FOR_TARGET)
304 # -------------------------
305 # Check C compiler features
306 # -------------------------
308 AC_USE_SYSTEM_EXTENSIONS
314 # sizeof(char) is 1 by definition.
315 AC_CHECK_SIZEOF(void *)
316 AC_CHECK_SIZEOF(short)
318 AC_CHECK_SIZEOF(long)
319 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
320 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
323 # ---------------------
324 # Warnings and checking
325 # ---------------------
327 # Check $CC warning features (if it's GCC).
328 # We want to use -pedantic, but we don't want warnings about
332 # * C++11 narrowing conversions in { }
333 # So, we only use -pedantic if we can disable those warnings.
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
344 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
345 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
346 [-Wno-overlength-strings])), [strict_warn])
347 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
349 # The above macros do nothing if the compiler is not GCC. However, the
350 # Makefile has more goo to add other flags, so these variables are used
351 # to enable warnings only for GCC.
354 if test "x$GCC" = "xyes"; then
355 warn_cflags='$(GCC_WARN_CFLAGS)'
356 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
358 AC_SUBST(warn_cflags)
359 AC_SUBST(warn_cxxflags)
361 # Enable expensive internal checks
363 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
367 AC_ARG_ENABLE(checking,
368 [AS_HELP_STRING([[--enable-checking[=LIST]]],
369 [enable expensive run-time checks. With LIST,
370 enable only specific categories of checks.
371 Categories are: yes,no,all,none,release.
372 Flags are: assert,df,fold,gc,gcac,gimple,misc,
373 rtlflag,rtl,runtime,tree,valgrind,types])],
374 [ac_checking_flags="${enableval}"],[
375 # Determine the default checks.
376 if test x$is_release = x ; then
377 ac_checking_flags=yes
379 ac_checking_flags=release
381 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
382 for check in release $ac_checking_flags
385 # these set all the flags to specific states
386 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
387 ac_fold_checking= ; ac_gc_checking=1 ;
388 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
389 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
390 ac_tree_checking=1 ; ac_valgrind_checking= ;
391 ac_types_checking=1 ;;
392 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
393 ac_fold_checking= ; ac_gc_checking= ;
394 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
395 ac_rtlflag_checking= ; ac_runtime_checking= ;
396 ac_tree_checking= ; ac_valgrind_checking= ;
397 ac_types_checking= ;;
398 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
399 ac_fold_checking=1 ; ac_gc_checking=1 ;
400 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
401 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
402 ac_tree_checking=1 ; ac_valgrind_checking= ;
403 ac_types_checking=1 ;;
404 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
405 ac_fold_checking= ; ac_gc_checking= ;
406 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
407 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
408 ac_tree_checking= ; ac_valgrind_checking= ;
409 ac_types_checking= ;;
410 # these enable particular checks
411 assert) ac_assert_checking=1 ;;
412 df) ac_df_checking=1 ;;
413 fold) ac_fold_checking=1 ;;
414 gc) ac_gc_checking=1 ;;
415 gcac) ac_gc_always_collect=1 ;;
416 gimple) ac_gimple_checking=1 ;;
417 misc) ac_checking=1 ;;
418 rtl) ac_rtl_checking=1 ;;
419 rtlflag) ac_rtlflag_checking=1 ;;
420 runtime) ac_runtime_checking=1 ;;
421 tree) ac_tree_checking=1 ;;
422 types) ac_types_checking=1 ;;
423 valgrind) ac_valgrind_checking=1 ;;
424 *) AC_MSG_ERROR(unknown check category $check) ;;
430 if test x$ac_checking != x ; then
431 AC_DEFINE(ENABLE_CHECKING, 1,
432 [Define if you want more run-time sanity checks. This one gets a grab
433 bag of miscellaneous but relatively cheap checks.])
434 nocommon_flag=-fno-common
436 AC_SUBST(nocommon_flag)
437 if test x$ac_df_checking != x ; then
438 AC_DEFINE(ENABLE_DF_CHECKING, 1,
439 [Define if you want more run-time sanity checks for dataflow.])
441 if test x$ac_assert_checking != x ; then
442 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
443 [Define if you want assertions enabled. This is a cheap check.])
445 if test x$ac_gimple_checking != x ; then
446 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
447 [Define if you want operations on GIMPLE (the basic data structure of
448 the high-level optimizers) to be checked for dynamic type safety at
449 runtime. This is moderately expensive.])
451 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
452 if test x$ac_runtime_checking != x ; then
453 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
454 [Define if you want runtime assertions enabled. This is a cheap check.])
456 if test x$ac_tree_checking != x ; then
457 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
458 [Define if you want all operations on trees (the basic data
459 structure of the front ends) to be checked for dynamic type safety
460 at runtime. This is moderately expensive. The tree browser debugging
461 routines will also be enabled by this option.
463 TREEBROWSER=tree-browser.o
465 if test x$ac_types_checking != x ; then
466 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
467 [Define if you want all gimple types to be verified after gimplifiation.
471 AC_SUBST(TREEBROWSER)
472 if test x$ac_rtl_checking != x ; then
473 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
474 [Define if you want all operations on RTL (the basic data structure
475 of the optimizer and back end) to be checked for dynamic type safety
476 at runtime. This is quite expensive.])
478 if test x$ac_rtlflag_checking != x ; then
479 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
480 [Define if you want RTL flag accesses to be checked against the RTL
481 codes that are supported for each access macro. This is relatively
484 if test x$ac_gc_checking != x ; then
485 AC_DEFINE(ENABLE_GC_CHECKING, 1,
486 [Define if you want the garbage collector to do object poisoning and
487 other memory allocation checks. This is quite expensive.])
489 if test x$ac_gc_always_collect != x ; then
490 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
491 [Define if you want the garbage collector to operate in maximally
492 paranoid mode, validating the entire heap and collecting garbage at
493 every opportunity. This is extremely expensive.])
495 if test x$ac_fold_checking != x ; then
496 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
497 [Define if you want fold checked that it never destructs its argument.
498 This is quite expensive.])
500 valgrind_path_defines=
503 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
504 dnl # an if statement. This was the source of very frustrating bugs
505 dnl # in converting to autoconf 2.5x!
506 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
508 if test x$ac_valgrind_checking != x ; then
509 # It is certainly possible that there's valgrind but no valgrind.h.
510 # GCC relies on making annotations so we must have both.
511 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
512 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
513 [[#include <valgrind/memcheck.h>
514 #ifndef VALGRIND_DISCARD
515 #error VALGRIND_DISCARD not defined
517 [gcc_cv_header_valgrind_memcheck_h=yes],
518 [gcc_cv_header_valgrind_memcheck_h=no])
519 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
520 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
521 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
522 [[#include <memcheck.h>
523 #ifndef VALGRIND_DISCARD
524 #error VALGRIND_DISCARD not defined
526 [gcc_cv_header_memcheck_h=yes],
527 [gcc_cv_header_memcheck_h=no])
528 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
529 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
530 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
531 if test "x$valgrind_path" = "x" \
532 || (test $have_valgrind_h = no \
533 && test $gcc_cv_header_memcheck_h = no \
534 && test $gcc_cv_header_valgrind_memcheck_h = no); then
535 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
537 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
538 valgrind_command="$valgrind_path -q"
539 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
540 [Define if you want to run subprograms and generated programs
541 through valgrind (a memory checker). This is extremely expensive.])
542 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
543 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
544 [Define if valgrind's valgrind/memcheck.h header is installed.])
546 if test $gcc_cv_header_memcheck_h = yes; then
547 AC_DEFINE(HAVE_MEMCHECK_H, 1,
548 [Define if valgrind's memcheck.h header is installed.])
551 AC_SUBST(valgrind_path_defines)
552 AC_SUBST(valgrind_command)
554 # Enable code coverage collection
555 AC_ARG_ENABLE(coverage,
556 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
557 [enable compiler's code coverage collection.
558 Use to measure compiler performance and locate
559 unused parts of the compiler. With LEVEL, specify
560 optimization. Values are opt, noopt,
562 [case "${enableval}" in
564 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
567 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
570 # a.k.a. --disable-coverage
574 AC_MSG_ERROR(unknown coverage setting $enableval)
578 AC_SUBST(coverage_flags)
580 AC_ARG_ENABLE(gather-detailed-mem-stats,
581 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
582 [enable detailed memory allocation stats gathering])], [],
583 [enable_gather_detailed_mem_stats=no])
584 if test x$enable_gather_detailed_mem_stats = xyes ; then
585 AC_DEFINE(GATHER_STATISTICS, 1,
586 [Define to enable detailed memory allocation stats gathering.])
589 # -------------------------------
590 # Miscenalleous configure options
591 # -------------------------------
593 # See if we are building gcc with C++.
594 AC_ARG_ENABLE(build-with-cxx,
595 [AS_HELP_STRING([--enable-build-with-cxx],
596 [build with C++ compiler instead of C compiler])],
597 ENABLE_BUILD_WITH_CXX=$enableval,
598 ENABLE_BUILD_WITH_CXX=no)
599 AC_SUBST(ENABLE_BUILD_WITH_CXX)
600 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
601 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
602 [Define if building with C++.])
607 [AS_HELP_STRING([--with-stabs],
608 [arrange to use stabs instead of host debug format])],
612 # Determine whether or not multilibs are enabled.
613 AC_ARG_ENABLE(multilib,
614 [AS_HELP_STRING([--enable-multilib],
615 [enable library support for multiple ABIs])],
616 [], [enable_multilib=yes])
617 AC_SUBST(enable_multilib)
619 # Enable __cxa_atexit for C++.
620 AC_ARG_ENABLE(__cxa_atexit,
621 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
624 # Enable C extension for decimal float if target supports it.
625 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
627 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
628 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
629 [Define to 1 to enable decimal float extension to C.])
631 # Use default_decimal_float for dependency.
632 enable_decimal_float=$default_decimal_float
634 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
635 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
636 [Define to 1 to specify that we are using the BID decimal floating
637 point format instead of DPD])
639 # Enable C extension for fixed-point arithmetic.
640 AC_ARG_ENABLE(fixed-point,
641 [AS_HELP_STRING([--enable-fixed-point],
642 [enable fixed-point arithmetic extension to C])],
647 enable_fixed_point=yes
653 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
654 enable_fixed_point=no
657 enable_fixed_point=yes
662 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
663 enable_fixed_point=no
667 AC_SUBST(enable_fixed_point)
669 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
670 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
671 [Define to 1 to enable fixed-point arithmetic extension to C.])
674 # Pass with no value to take the default
675 # Pass with a value to specify a thread package
676 AC_ARG_ENABLE(threads,
677 [AS_HELP_STRING([[--enable-threads[=LIB]]],
678 [enable thread usage for target GCC,
679 using LIB thread package])],,
683 [AS_HELP_STRING([--enable-tls],
684 [enable or disable generation of tls code
685 overriding the assembler check for tls support])],
689 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
690 Valid choices are 'yes' and 'no'.]) ;;
694 AC_ARG_ENABLE(objc-gc,
695 [AS_HELP_STRING([--enable-objc-gc],
696 [enable the use of Boehm's garbage collector with
697 the GNU Objective-C runtime])],
698 if test x$enable_objc_gc = xno; then
706 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
707 dwarf2="$with_dwarf2",
710 AC_ARG_ENABLE(shared,
711 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
713 case $enable_shared in
717 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
718 for pkg in $enableval; do
719 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
726 ], [enable_shared=yes])
727 AC_SUBST(enable_shared)
729 AC_ARG_WITH([native-system-header-dir],
730 [ --with-native-system-header-dir=dir
731 use dir as the directory to look for standard
732 system header files in. Defaults to /usr/include.],
734 case ${with_native_system_header_dir} in
735 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
736 /* | [[A-Za-z]]:[[\\/]]*) ;;
737 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
739 configured_native_system_header_dir="${withval}"
740 ], [configured_native_system_header_dir=])
742 AC_ARG_WITH(build-sysroot,
743 [AS_HELP_STRING([--with-build-sysroot=sysroot],
744 [use sysroot as the system root during the build])],
745 [if test x"$withval" != x ; then
746 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
748 [SYSROOT_CFLAGS_FOR_TARGET=])
749 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
752 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
753 [search for usr/lib, usr/include, et al, within DIR])],
755 case ${with_sysroot} in
756 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
757 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
760 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
761 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
763 if test "x$prefix" = xNONE; then
764 test_prefix=/usr/local
768 if test "x$exec_prefix" = xNONE; then
769 test_exec_prefix=$test_prefix
771 test_exec_prefix=$exec_prefix
773 case ${TARGET_SYSTEM_ROOT} in
774 "${test_prefix}"|"${test_prefix}/"*|\
775 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
776 '${prefix}'|'${prefix}/'*|\
777 '${exec_prefix}'|'${exec_prefix}/'*)
778 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
779 TARGET_SYSTEM_ROOT_DEFINE="$t"
784 TARGET_SYSTEM_ROOT_DEFINE=
785 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
787 AC_SUBST(TARGET_SYSTEM_ROOT)
788 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
789 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
792 [AS_HELP_STRING([--with-specs=SPECS],
793 [add SPECS to driver command-line processing])],
794 [CONFIGURE_SPECS=$withval],
797 AC_SUBST(CONFIGURE_SPECS)
799 ACX_PKGVERSION([GCC])
800 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
802 # Sanity check enable_languages in case someone does not run the toplevel
803 # configure # script.
804 AC_ARG_ENABLE(languages,
805 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
806 [case ,${enable_languages}, in
808 # go safe -- we cannot be much sure without the toplevel
810 # analysis of which target libs are present and usable
814 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
819 enable_languages=c,${enable_languages}
822 [enable_languages=c])
824 AC_ARG_WITH(multilib-list,
825 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
827 with_multilib_list=default)
829 # -------------------------
830 # Checks for other programs
831 # -------------------------
835 # Find some useful tools
837 # We need awk to create options.c and options.h.
838 # Bail out if it's missing.
840 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
848 # By default, the Darwin ranlib will not treat common symbols as
849 # definitions when building the archive table of contents. Other
850 # ranlibs do that; pass an option to the Darwin ranlib that makes
851 # it behave similarly.
857 AC_SUBST(ranlib_flags)
861 # See if cmp has --ignore-initial.
862 gcc_AC_PROG_CMP_IGNORE_INITIAL
864 # See if we have the mktemp command.
865 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
867 # See if makeinfo has been installed and is modern enough
868 # that we can use it.
869 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
870 [GNU texinfo.* \([0-9][0-9.]*\)],
871 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
872 if test $gcc_cv_prog_makeinfo_modern = no; then
874 *** Makeinfo is missing or too old.
875 *** Info documentation will not be built.])
882 # Is pod2man recent enough to regenerate manpages?
883 AC_MSG_CHECKING([for recent Pod::Man])
884 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
886 GENERATED_MANPAGES=generated-manpages
891 AC_SUBST(GENERATED_MANPAGES)
893 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
896 dnl Don't use AC_PROG_LEX; we insist on flex.
897 dnl LEXLIB is not useful in gcc.
898 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
901 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
903 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
904 # check for build == host before using them.
907 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
908 && test -d ../binutils ; then
909 NM='${objdir}/../binutils/nm-new'
911 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
915 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
916 && test -d ../binutils ; then
917 AR='${objdir}/../binutils/ar'
919 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
923 # --------------------
924 # Checks for C headers
925 # --------------------
927 # Need to reject headers which give warnings, so that the -Werror bootstrap
928 # works later. *sigh* This needs to come before all header checks.
935 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
936 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
937 sys/resource.h sys/param.h sys/times.h sys/stat.h \
938 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
940 # Check for thread headers.
941 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
942 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
944 # These tests can't be done till we know if we have limits.h.
948 # ----------------------
949 # Checks for C++ headers
950 # ----------------------
952 dnl Autoconf will give an error in the configure script if there is no
953 dnl C++ preprocessor. Hack to prevent that.
954 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
956 m4_popdef([AC_MSG_ERROR])[]dnl
960 AC_CHECK_HEADERS(unordered_map)
961 AC_CHECK_HEADERS(tr1/unordered_map)
962 AC_CHECK_HEADERS(ext/hash_map)
971 # These libraries may be used by collect2.
972 # We may need a special search path to get them linked.
973 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
975 for libs in '' -lld -lmld \
976 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
977 '-L/usr/lib/cmplrs/cc3.11 -lmld'
980 AC_TRY_LINK_FUNC(ldopen,
981 [gcc_cv_collect2_libs="$libs"; break])
984 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
985 case $gcc_cv_collect2_libs in
987 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
989 AC_SUBST(COLLECT2_LIBS)
991 # When building Ada code on Alpha, we need exc_resume which is usually in
992 # -lexc. So test for it.
995 AC_SEARCH_LIBS(exc_resume, exc)
998 AC_SUBST(GNAT_LIBEXC)
1000 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1003 AC_SEARCH_LIBS(kstat_open, kstat)
1004 EXTRA_GCC_LIBS="$LIBS"
1006 AC_SUBST(EXTRA_GCC_LIBS)
1008 # Some systems put ldexp and frexp in libm instead of libc; assume
1009 # they're both in the same place. jcf-dump needs them.
1012 AC_SEARCH_LIBS(ldexp, m)
1017 # Use <inttypes.h> only if it exists,
1018 # doesn't clash with <sys/types.h>, and declares intmax_t.
1019 AC_MSG_CHECKING(for inttypes.h)
1020 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1021 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1022 [[#include <sys/types.h>
1023 #include <inttypes.h>]],
1024 [[intmax_t i = -1;]])],
1025 [gcc_cv_header_inttypes_h=yes],
1026 [gcc_cv_header_inttypes_h=no])])
1027 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1028 if test $gcc_cv_header_inttypes_h = yes; then
1029 AC_DEFINE(HAVE_INTTYPES_H, 1,
1030 [Define if you have a working <inttypes.h> header file.])
1033 dnl Disabled until we have a complete test for buggy enum bitfields.
1034 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1036 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1037 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1038 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1039 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1040 putchar_unlocked putc_unlocked)
1041 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1042 sysconf strsignal getrusage nl_langinfo \
1043 gettimeofday mbstowcs wcswidth mmap setlocale \
1044 gcc_UNLOCKED_FUNCS madvise)
1046 if test x$ac_cv_func_mbstowcs = xyes; then
1047 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1048 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1054 [gcc_cv_func_mbstowcs_works=yes],
1055 [gcc_cv_func_mbstowcs_works=no],
1056 [gcc_cv_func_mbstowcs_works=yes])])
1057 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1058 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1059 [Define this macro if mbstowcs does not crash when its
1060 first argument is NULL.])
1064 AC_CHECK_TYPE(ssize_t, int)
1065 AC_CHECK_TYPE(caddr_t, char *)
1067 gcc_AC_FUNC_MMAP_BLACKLIST
1071 # Under VMS, vfork works very differently than on Unix. The standard test
1072 # won't work, and it isn't easily adaptable. It makes more sense to
1074 ac_cv_func_vfork_works=yes
1079 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1080 # iconv() prototype.
1081 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1082 [AC_LANG_PUSH([C++])
1084 AC_LANG_POP([C++])],
1087 # Until we have in-tree GNU iconv:
1089 AC_SUBST(LIBICONV_DEP)
1095 # We will need to find libiberty.h and ansidecl.h
1096 saved_CFLAGS="$CFLAGS"
1097 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1098 saved_CXXFLAGS="$CXXFLAGS"
1099 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1100 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1101 strsignal strstr strverscmp \
1102 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1103 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1104 #include "ansidecl.h"
1105 #include "system.h"])
1107 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1108 #include "ansidecl.h"
1110 #ifdef HAVE_SYS_RESOURCE_H
1111 #include <sys/resource.h>
1115 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1116 #include "ansidecl.h"
1118 #ifdef HAVE_SYS_RESOURCE_H
1119 #include <sys/resource.h>
1121 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1122 [Define to `long' if <sys/resource.h> doesn't define.])])
1124 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1125 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1126 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1127 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1128 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1129 #include "ansidecl.h"
1138 gcc_AC_CHECK_DECLS(times, , ,[
1139 #include "ansidecl.h"
1141 #ifdef HAVE_SYS_TIMES_H
1142 #include <sys/times.h>
1146 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1147 #include "ansidecl.h"
1152 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1154 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1155 [AC_LANG_PUSH([C++])
1156 gcc_AC_CHECK_DECLS(madvise, , ,[
1157 #include "ansidecl.h"
1160 AC_LANG_POP([C++])],
1161 [gcc_AC_CHECK_DECLS(madvise, , ,[
1162 #include "ansidecl.h"
1167 # More time-related stuff.
1168 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1169 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1170 #include "ansidecl.h"
1172 #ifdef HAVE_SYS_TIMES_H
1173 #include <sys/times.h>
1175 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1176 if test $ac_cv_struct_tms = yes; then
1177 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1178 [Define if <sys/times.h> defines struct tms.])
1181 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1182 # revisit after autoconf 2.50.
1183 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1184 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1185 #include "ansidecl.h"
1187 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1188 if test $gcc_cv_type_clock_t = yes; then
1189 AC_DEFINE(HAVE_CLOCK_T, 1,
1190 [Define if <time.h> defines clock_t.])
1193 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1194 CFLAGS="$saved_CFLAGS"
1195 CXXFLAGS="$saved_CXXFLAGS"
1197 gcc_AC_INITFINI_ARRAY
1199 # mkdir takes a single argument on some systems.
1200 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1208 # With Setjmp/Longjmp based exception handling.
1209 AC_ARG_ENABLE(sjlj-exceptions,
1210 [AS_HELP_STRING([--enable-sjlj-exceptions],
1211 [arrange to use setjmp/longjmp exception handling])],
1214 if test $enableval != yes; then
1215 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1220 force_sjlj_exceptions=yes],
1223 force_sjlj_exceptions=yes
1227 force_sjlj_exceptions=no
1230 if test $force_sjlj_exceptions = yes; then
1231 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1232 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1233 [Define 0/1 to force the choice for exception handling model.])
1236 # --------------------------------------------------------
1237 # Build, host, and target specific configuration fragments
1238 # --------------------------------------------------------
1240 # Collect build-machine-specific information.
1241 . ${srcdir}/config.build
1243 # Collect host-machine-specific information.
1244 . ${srcdir}/config.host
1248 # Collect target-machine-specific information.
1249 . ${srcdir}/config.gcc
1251 extra_objs="${host_extra_objs} ${extra_objs}"
1252 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1254 # Default the target-machine variables that were not explicitly set.
1255 if test x"$tm_file" = x
1256 then tm_file=$cpu_type/$cpu_type.h; fi
1258 if test x"$extra_headers" = x
1259 then extra_headers=; fi
1261 if test x$md_file = x
1262 then md_file=$cpu_type/$cpu_type.md; fi
1264 if test x$out_file = x
1265 then out_file=$cpu_type/$cpu_type.c; fi
1267 if test x"$tmake_file" = x
1268 then tmake_file=$cpu_type/t-$cpu_type
1271 if test x"$dwarf2" = xyes
1272 then tm_file="$tm_file tm-dwarf2.h"
1275 # Say what files are being used for the output code and MD file.
1276 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1277 echo "Using \`$srcdir/config/$md_file' as machine description file."
1279 # If any of the xm_file variables contain nonexistent files, warn
1280 # about them and drop them.
1283 for x in $build_xm_file; do
1284 if test -f $srcdir/config/$x
1286 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1292 for x in $host_xm_file; do
1293 if test -f $srcdir/config/$x
1295 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1301 for x in $xm_file; do
1302 if test -f $srcdir/config/$x
1304 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1310 for f in $tm_file; do
1313 if test $count = ax; then
1314 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1316 echo "Using the following target machine macro files:"
1317 for f in $tm_file; do
1318 echo " $srcdir/config/$f"
1322 if test x$need_64bit_hwint = xyes; then
1323 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1324 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1327 if test x$use_long_long_for_widest_fast_int = xyes; then
1328 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1329 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1330 efficiently supported by the host hardware.])
1334 for f in $host_xm_file; do
1337 if test $count = a; then
1339 elif test $count = ax; then
1340 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1342 echo "Using the following host machine macro files:"
1343 for f in $host_xm_file; do
1344 echo " $srcdir/config/$f"
1347 echo "Using ${out_host_hook_obj} for host machine hooks."
1349 if test "$host_xm_file" != "$build_xm_file"; then
1351 for f in $build_xm_file; do
1354 if test $count = a; then
1356 elif test $count = ax; then
1357 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1359 echo "Using the following build machine macro files:"
1360 for f in $build_xm_file; do
1361 echo " $srcdir/config/$f"
1366 if test -n "$configured_native_system_header_dir"; then
1367 native_system_header_dir=$configured_native_system_header_dir
1369 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1370 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1374 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1375 gcc_cv_mcontext_underscores,
1377 #include <sys/cdefs.h>
1378 #include <sys/signal.h>
1379 #include <ucontext.h>
1380 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1382 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1383 if test $gcc_cv_mcontext_underscores = yes; then
1384 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1385 [mcontext_t fields start with __])
1394 # Check if a valid thread package
1395 case ${enable_threads} in
1398 target_thread_file='single'
1402 target_thread_file='single'
1404 aix | dce | lynx | mipssde | posix | rtems | \
1405 single | tpf | vxworks | win32)
1406 target_thread_file=${enable_threads}
1409 echo "${enable_threads} is an unknown thread package" 1>&2
1414 if test x${thread_file} = x; then
1415 # No thread file set by target-specific clauses in config.gcc,
1416 # so use file chosen by default logic above
1417 thread_file=${target_thread_file}
1425 if test x$enable___cxa_atexit = xyes || \
1426 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1427 if test x$host = x$target; then
1429 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1430 # keyed to flag_use_cxa_atexit
1435 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1436 [echo "__cxa_atexit can't be enabled on this target"])
1440 # We can't check for __cxa_atexit when building a cross, so assume
1444 if test x$use_cxa_atexit = xyes; then
1445 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1446 [Define if you want to use __cxa_atexit, rather than atexit, to
1447 register C++ destructors for local statics and global objects.
1448 This is essential for fully standards-compliant handling of
1449 destructors, but requires __cxa_atexit in libc.])
1453 # Look for a file containing extra machine modes.
1454 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1455 extra_modes_file='$(srcdir)'/config/${extra_modes}
1456 AC_SUBST(extra_modes_file)
1457 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1458 [Define to the name of a file containing a list of extra machine modes
1459 for this architecture.])
1462 # Convert extra_options into a form suitable for Makefile use.
1465 for f in $extra_options; do
1466 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1467 all_opt_files="$all_opt_files $srcdir/config/$f"
1469 AC_SUBST(extra_opt_files)
1471 # auto-host.h is the file containing items generated by autoconf and is
1472 # the first file included by config.h.
1473 # If host=build, it is correct to have bconfig include auto-host.h
1474 # as well. If host!=build, we are in error and need to do more
1475 # work to find out the build config parameters.
1476 if test x$host = x$build
1478 build_auto=auto-host.h
1480 # We create a subdir, then run autoconf in the subdir.
1481 # To prevent recursion we set host and build for the new
1482 # invocation of configure to the build for this invocation
1489 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1490 *) realsrcdir=../${srcdir};;
1492 saved_CFLAGS="${CFLAGS}"
1493 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1494 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1495 ${realsrcdir}/configure \
1496 --enable-languages=${enable_languages-all} \
1497 --target=$target_alias --host=$build_alias --build=$build_alias
1498 CFLAGS="${saved_CFLAGS}"
1500 # We just finished tests for the build machine, so rename
1501 # the file auto-build.h in the gcc directory.
1502 mv auto-host.h ../auto-build.h
1505 build_auto=auto-build.h
1507 AC_SUBST(build_subdir)
1509 tm_file="${tm_file} defaults.h"
1510 tm_p_file="${tm_p_file} tm-preds.h"
1511 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1512 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1513 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1514 # put this back in temporarily.
1515 xm_file="auto-host.h ansidecl.h ${xm_file}"
1522 # Compile in configure arguments.
1523 if test -f configargs.h ; then
1524 # Being re-configured.
1525 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1526 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1528 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1531 # Double all backslashes and backslash all quotes to turn
1532 # gcc_config_arguments into a C string.
1533 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1534 $gcc_config_arguments
1536 gcc_config_arguments_str=`cat conftest.out`
1539 cat > configargs.h <<EOF
1540 /* Generated automatically. */
1541 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1542 static const char thread_model[] = "$thread_file";
1544 static const struct {
1545 const char *name, *value;
1546 } configure_default_options[] = $configure_default_options;
1551 gcc_BASEVER=`cat $srcdir/BASE-VER`
1552 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1553 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1554 if test -f $srcdir/REVISION ; then
1555 gcc_REVISION=`cat $srcdir/REVISION`
1559 cat > plugin-version.h <<EOF
1560 #include "configargs.h"
1562 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1563 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1564 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1565 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1567 static char basever[] = "$gcc_BASEVER";
1568 static char datestamp[] = "$gcc_DATESTAMP";
1569 static char devphase[] = "$gcc_DEVPHASE";
1570 static char revision[] = "$gcc_REVISION";
1572 /* FIXME plugins: We should make the version information more precise.
1573 One way to do is to add a checksum. */
1575 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1577 configuration_arguments};
1581 # Internationalization
1582 ZW_GNU_GETTEXT_SISTER_DIR
1584 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1585 # -liconv on the link line twice.
1586 case "$LIBINTL" in *$LIBICONV*)
1590 AC_ARG_ENABLE(secureplt,
1591 [AS_HELP_STRING([--enable-secureplt],
1592 [enable -msecure-plt by default for PowerPC])],
1595 AC_ARG_ENABLE(leading-mingw64-underscores,
1596 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1597 [enable leading underscores on 64 bit mingw targets]),
1599 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1600 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1601 [Define if we should use leading underscore on 64 bit mingw targets])])
1604 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1607 AC_ARG_ENABLE(frame-pointer,
1608 [AS_HELP_STRING([--enable-frame-pointer],
1609 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1612 linux* | darwin[[8912]]*)
1613 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1615 enable_frame_pointer=no
1618 enable_frame_pointer=yes
1623 # Windows32 Registry support for specifying GCC installation paths.
1624 AC_ARG_ENABLE(win32-registry,
1625 [AS_HELP_STRING([--disable-win32-registry],
1626 [disable lookup of installation paths in the
1627 Registry on Windows hosts])
1628 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1629 AS_HELP_STRING([--enable-win32-registry=KEY],
1630 [use KEY instead of GCC version as the last portion
1631 of the registry key])],,)
1634 win32 | pe | cygwin* | mingw32* | uwin*)
1635 if test "x$enable_win32_registry" != xno; then
1636 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1639 if test "x$enable_win32_registry" != xno; then
1640 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1641 [Define to 1 if installation paths should be looked up in the Windows
1642 Registry. Ignored on non-Windows hosts.])
1644 if test "x$enable_win32_registry" != xyes \
1645 && test "x$enable_win32_registry" != x; then
1646 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1647 [Define to be the last component of the Windows registry key under which
1648 to look for installation paths. The full key used will be
1649 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1650 The default is the GCC version number.])
1656 # Get an absolute path to the GCC top-level source directory
1657 holddir=`${PWDCMD-pwd}`
1659 topdir=`${PWDCMD-pwd}`
1662 # Conditionalize the makefile for this host machine.
1664 for f in ${host_xmake_file}
1666 if test -f ${srcdir}/config/$f
1668 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1672 # Conditionalize the makefile for this target machine.
1674 for f in ${tmake_file}
1676 if test -f ${srcdir}/config/$f
1678 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1681 tmake_file="${tmake_file_}"
1683 out_object_file=`basename $out_file .c`.o
1684 common_out_object_file=`basename $common_out_file .c`.o
1686 tm_file_list="options.h"
1687 tm_include_list="options.h insn-constants.h"
1688 for f in $tm_file; do
1691 f=`echo $f | sed 's/^..//'`
1692 tm_file_list="${tm_file_list} $f"
1693 tm_include_list="${tm_include_list} $f"
1696 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1697 tm_include_list="${tm_include_list} $f"
1700 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1701 tm_include_list="${tm_include_list} config/$f"
1708 for f in $tm_p_file; do
1711 tm_p_file_list="${tm_p_file_list} $f"
1712 tm_p_include_list="${tm_p_include_list} $f"
1715 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1716 tm_p_include_list="${tm_p_include_list} config/$f"
1722 for f in $xm_file; do
1725 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1726 xm_include_list="${xm_include_list} $f"
1729 xm_file_list="${xm_file_list} $f"
1730 xm_include_list="${xm_include_list} $f"
1733 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1734 xm_include_list="${xm_include_list} config/$f"
1740 host_xm_include_list=
1741 for f in $host_xm_file; do
1744 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1745 host_xm_include_list="${host_xm_include_list} $f"
1748 host_xm_file_list="${host_xm_file_list} $f"
1749 host_xm_include_list="${host_xm_include_list} $f"
1752 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1753 host_xm_include_list="${host_xm_include_list} config/$f"
1759 for f in $build_xm_file; do
1762 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1763 build_xm_include_list="${build_xm_include_list} $f"
1765 auto-build.h | auto-host.h )
1766 build_xm_file_list="${build_xm_file_list} $f"
1767 build_xm_include_list="${build_xm_include_list} $f"
1770 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1771 build_xm_include_list="${build_xm_include_list} config/$f"
1776 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1777 # cross-compiler which does not use the native headers and libraries.
1778 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1779 CROSS= AC_SUBST(CROSS)
1780 ALL=all.internal AC_SUBST(ALL)
1781 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1783 if test "x$with_build_sysroot" != x; then
1784 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1786 # This value is used, even on a native system, because
1787 # CROSS_SYSTEM_HEADER_DIR is just
1788 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1789 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1792 if test x$host != x$target
1794 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1796 SYSTEM_HEADER_DIR=$build_system_header_dir
1797 case "$host","$target" in
1798 # Darwin crosses can use the host system's libraries and headers,
1799 # because of the fat library support. Of course, it must be the
1800 # same version of Darwin on both sides. Allow the user to
1801 # just say --target=foo-darwin without a version number to mean
1802 # "the version on this system".
1803 *-*-darwin*,*-*-darwin*)
1804 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1805 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1806 if test $hostos = $targetos -o $targetos = darwin ; then
1808 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1813 i?86-*-*,x86_64-*-* \
1814 | powerpc*-*-*,powerpc64*-*-*)
1815 CROSS="$CROSS -DNATIVE_CROSS" ;;
1820 if test "x$with_headers" = x; then
1827 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1828 SYSTEM_HEADER_DIR=$build_system_header_dir
1831 # If this is a cross-compiler that does not
1832 # have its own set of headers then define
1835 # If this is using newlib, without having the headers available now,
1836 # then define inhibit_libc in LIBGCC2_CFLAGS.
1837 # This prevents libgcc2 from containing any code which requires libc
1839 : ${inhibit_libc=false}
1840 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1841 test x$with_newlib = xyes ; } &&
1842 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1845 AC_SUBST(inhibit_libc)
1847 # When building gcc with a cross-compiler, we need to adjust things so
1848 # that the generator programs are still built with the native compiler.
1849 # Also, we cannot run fixincludes.
1851 # These are the normal (build=host) settings:
1852 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1853 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1854 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1855 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1857 # And these apply if build != host, or we are generating coverage data
1858 if test x$build != x$host || test "x$coverage_flags" != x
1860 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1861 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1864 # Expand extra_headers to include complete path.
1865 # This substitutes for lots of t-* files.
1867 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1868 for file in ${extra_headers} ; do
1869 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1872 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1873 if test x"$use_gcc_tgmath" = xyes
1874 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1877 # Define collect2 in Makefile.
1878 case $host_can_use_collect2 in
1880 *) collect2='collect2$(exeext)' ;;
1882 AC_SUBST([collect2])
1884 # Add a definition of USE_COLLECT2 if system wants one.
1885 case $use_collect2 in
1886 no) use_collect2= ;;
1889 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1890 xm_defines="${xm_defines} USE_COLLECT2"
1891 case $host_can_use_collect2 in
1893 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1899 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1900 [Define to the name of the LTO plugin DSO that must be
1901 passed to the linker's -plugin=LIB option.])
1903 # ---------------------------
1904 # Assembler & linker features
1905 # ---------------------------
1907 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1908 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1909 # However when ld-new is first executed from the build tree, libtool will
1910 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1911 # to the build tree. While doing this we need to use the previous-stage
1912 # linker, or we have an infinite loop. The presence of a shell script as
1913 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1914 # the gcc/collect-ld script. So we need to know how libtool works, or
1915 # exec-tool will fail.
1917 m4_defun([_LT_CONFIG_COMMANDS], [])
1920 AC_SUBST(enable_fast_install)
1922 # Identify the assembler which will work hand-in-glove with the newly
1923 # built GCC, so that we can examine its features. This is the assembler
1924 # which will be driven by the driver program.
1926 # If build != host, and we aren't building gas in-tree, we identify a
1927 # build->target assembler and hope that it will have the same features
1928 # as the host->target assembler we'll be using.
1929 gcc_cv_gas_major_version=
1930 gcc_cv_gas_minor_version=
1931 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1933 m4_pattern_allow([AS_FOR_TARGET])dnl
1934 AS_VAR_SET_IF(gcc_cv_as,, [
1935 if test -x "$DEFAULT_ASSEMBLER"; then
1936 gcc_cv_as="$DEFAULT_ASSEMBLER"
1937 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1938 && test -f ../gas/Makefile \
1939 && test x$build = x$host; then
1940 gcc_cv_as=../gas/as-new$build_exeext
1941 elif test -x as$build_exeext; then
1942 # Build using assembler in the current directory.
1943 gcc_cv_as=./as$build_exeext
1944 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1945 gcc_cv_as="$AS_FOR_TARGET"
1947 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1950 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1951 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1952 case "$ORIGINAL_AS_FOR_TARGET" in
1953 ./as | ./as$build_exeext) ;;
1954 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1957 AC_MSG_CHECKING(what assembler to use)
1958 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1959 # Single tree build which includes gas. We want to prefer it
1960 # over whatever linker top-level may have detected, since
1961 # we'll use what we're building after installation anyway.
1962 AC_MSG_RESULT(newly built gas)
1964 _gcc_COMPUTE_GAS_VERSION
1965 in_tree_gas_is_elf=no
1966 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1967 || (grep 'obj_format = multi' ../gas/Makefile \
1968 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1970 in_tree_gas_is_elf=yes
1973 AC_MSG_RESULT($gcc_cv_as)
1977 # Identify the linker which will work hand-in-glove with the newly
1978 # built GCC, so that we can examine its features. This is the linker
1979 # which will be driven by the driver program.
1981 # If build != host, and we aren't building gas in-tree, we identify a
1982 # build->target linker and hope that it will have the same features
1983 # as the host->target linker we'll be using.
1984 gcc_cv_gld_major_version=
1985 gcc_cv_gld_minor_version=
1986 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1987 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1989 AS_VAR_SET_IF(gcc_cv_ld,, [
1990 if test -x "$DEFAULT_LINKER"; then
1991 gcc_cv_ld="$DEFAULT_LINKER"
1992 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1993 && test -f ../ld/Makefile \
1994 && test x$build = x$host; then
1995 gcc_cv_ld=../ld/ld-new$build_exeext
1996 elif test -x collect-ld$build_exeext; then
1997 # Build using linker in the current directory.
1998 gcc_cv_ld=./collect-ld$build_exeext
1999 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2000 gcc_cv_ld="$LD_FOR_TARGET"
2002 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2005 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2006 PLUGIN_LD=`basename $gcc_cv_ld`
2007 AC_ARG_WITH(plugin-ld,
2008 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2009 [if test x"$withval" != x; then
2010 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2011 PLUGIN_LD="$withval"
2013 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2014 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2016 # Check to see if we are using gold instead of ld
2017 AC_MSG_CHECKING(whether we are using gold)
2019 if test x$gcc_cv_ld != x; then
2020 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2021 | grep "GNU gold" > /dev/null; then
2025 AC_MSG_RESULT($ld_is_gold)
2027 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2028 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2029 case "$ORIGINAL_LD_FOR_TARGET" in
2030 ./collect-ld | ./collect-ld$build_exeext) ;;
2031 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2034 AC_MSG_CHECKING(what linker to use)
2035 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2036 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2037 # Single tree build which includes ld. We want to prefer it
2038 # over whatever linker top-level may have detected, since
2039 # we'll use what we're building after installation anyway.
2040 AC_MSG_RESULT(newly built ld)
2042 in_tree_ld_is_elf=no
2043 if (grep 'EMUL = .*elf' ../ld/Makefile \
2044 || grep 'EMUL = .*linux' ../ld/Makefile \
2045 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2046 in_tree_ld_is_elf=yes
2047 elif test "$ld_is_gold" = yes; then
2048 in_tree_ld_is_elf=yes
2050 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
2053 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2054 if test x$gcc_cv_gld_version != x; then
2058 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2059 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2062 AC_MSG_RESULT($gcc_cv_ld)
2066 # Figure out what nm we will be using.
2067 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2068 AS_VAR_SET_IF(gcc_cv_nm,, [
2069 if test -f $gcc_cv_binutils_srcdir/configure.in \
2070 && test -f ../binutils/Makefile \
2071 && test x$build = x$host; then
2072 gcc_cv_nm=../binutils/nm-new$build_exeext
2073 elif test -x nm$build_exeext; then
2074 gcc_cv_nm=./nm$build_exeext
2075 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2076 gcc_cv_nm="$NM_FOR_TARGET"
2078 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2081 AC_MSG_CHECKING(what nm to use)
2082 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2083 # Single tree build which includes binutils.
2084 AC_MSG_RESULT(newly built nm)
2087 AC_MSG_RESULT($gcc_cv_nm)
2091 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2092 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2093 case "$ORIGINAL_NM_FOR_TARGET" in
2094 ./nm | ./nm$build_exeext) ;;
2095 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2099 # Figure out what objdump we will be using.
2100 AS_VAR_SET_IF(gcc_cv_objdump,, [
2101 if test -f $gcc_cv_binutils_srcdir/configure.in \
2102 && test -f ../binutils/Makefile \
2103 && test x$build = x$host; then
2104 # Single tree build which includes binutils.
2105 gcc_cv_objdump=../binutils/objdump$build_exeext
2106 elif test -x objdump$build_exeext; then
2107 gcc_cv_objdump=./objdump$build_exeext
2108 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2109 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2111 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2114 AC_MSG_CHECKING(what objdump to use)
2115 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2116 # Single tree build which includes binutils.
2117 AC_MSG_RESULT(newly built objdump)
2118 elif test x$gcc_cv_objdump = x; then
2119 AC_MSG_RESULT(not found)
2121 AC_MSG_RESULT($gcc_cv_objdump)
2124 # Figure out what readelf we will be using.
2125 AS_VAR_SET_IF(gcc_cv_readelf,, [
2126 if test -f $gcc_cv_binutils_srcdir/configure.in \
2127 && test -f ../binutils/Makefile \
2128 && test x$build = x$host; then
2129 # Single tree build which includes binutils.
2130 gcc_cv_readelf=../binutils/readelf$build_exeext
2131 elif test -x readelf$build_exeext; then
2132 gcc_cv_readelf=./readelf$build_exeext
2134 AC_PATH_PROG(gcc_cv_readelf, readelf)
2137 AC_MSG_CHECKING(what readelf to use)
2138 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2139 # Single tree build which includes binutils.
2140 AC_MSG_RESULT(newly built readelf)
2141 elif test x$gcc_cv_readelf = x; then
2142 AC_MSG_RESULT(not found)
2144 AC_MSG_RESULT($gcc_cv_readelf)
2147 # Figure out what assembler alignment features are present.
2148 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2152 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2153 [Define if your assembler supports .balign and .p2align.])])
2155 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2158 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2159 [Define if your assembler supports specifying the maximum number
2160 of bytes to skip when using the GAS .p2align command.])])
2162 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2165 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2166 [Define if your assembler supports .literal16.])])
2168 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2170 [conftest_label1: .word 0
2172 conftest_label2: .word 0
2174 [if test x$gcc_cv_nm != x; then
2175 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2176 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2177 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2179 else gcc_cv_as_subsection_m1=yes
2181 rm -f conftest.nm1 conftest.nm2
2183 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2184 [Define if your assembler supports .subsection and .subsection -1 starts
2185 emitting at the beginning of your section.])])
2187 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2190 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2192 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2194 [ .weakref foobar, barfnot],,
2195 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2197 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2200 .NSUBSPA $CODE$,COMDAT],,
2201 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2203 # .hidden needs to be supported in both the assembler and the linker,
2204 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2205 # This is irritatingly difficult to feature test for; we have to check the
2206 # date string after the version number. If we've got an in-tree
2207 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2209 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2210 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2214 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2215 # STV_HIDDEN, so disable .hidden support if so.
2217 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2218 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2219 cat > conftest.s <<EOF
2226 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2227 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2228 grep '\.hidden default' > /dev/null; then
2231 gcc_cv_as_hidden=yes
2234 # Assume bug is present if objdump is missing.
2239 gcc_cv_as_hidden=yes
2244 # Darwin as has some visibility support, though with a different syntax.
2245 gcc_cv_as_hidden=yes
2249 # gnu_indirect_function type is an extension proposed at
2250 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2251 # selection of function implementation
2252 AC_ARG_ENABLE(gnu-indirect-function,
2253 [AS_HELP_STRING([--enable-gnu-indirect-function],
2254 [enable the use of the @gnu_indirect_function to glibc systems])],
2255 [case $enable_gnu_indirect_function in
2257 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2258 Valid choices are 'yes' and 'no'.]) ;;
2260 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2261 if test x$enable_gnu_indirect_function = xyes; then
2262 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2263 [Define if your system supports gnu indirect functions.])
2267 if test $in_tree_ld != yes ; then
2268 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2269 if echo "$ld_ver" | grep GNU > /dev/null; then
2270 if test x"$ld_is_gold" = xyes; then
2271 # GNU gold --version looks like this:
2273 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2275 # We extract the binutils version which is more familiar and specific
2276 # than the gold version.
2277 ld_vers=`echo $ld_ver | sed -n \
2278 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2280 # GNU ld --version looks like this:
2282 # GNU ld (GNU Binutils) 2.21.51.20110225
2283 ld_vers=`echo $ld_ver | sed -n \
2284 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2286 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2287 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2288 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2289 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2294 # Solaris 2 ld -V output looks like this for a regular version:
2296 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2298 # but test versions add stuff at the end:
2300 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2302 ld_ver=`$gcc_cv_ld -V 2>&1`
2303 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2304 ld_vers=`echo $ld_ver | sed -n \
2305 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2306 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2307 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2315 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2316 [[if test $in_tree_ld = yes ; then
2318 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2319 && test $in_tree_ld_is_elf = yes; then
2320 gcc_cv_ld_hidden=yes
2323 gcc_cv_ld_hidden=yes
2324 if test x"$ld_is_gold" = xyes; then
2326 elif echo "$ld_ver" | grep GNU > /dev/null; then
2327 if test 0"$ld_date" -lt 20020404; then
2328 if test -n "$ld_date"; then
2329 # If there was date string, but was earlier than 2002-04-04, fail
2331 elif test -z "$ld_vers"; then
2332 # If there was no date string nor ld version number, something is wrong
2335 test -z "$ld_vers_patch" && ld_vers_patch=0
2336 if test "$ld_vers_major" -lt 2; then
2338 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2339 gcc_cv_ld_hidden="no"
2340 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2348 # Darwin ld has some visibility support.
2349 gcc_cv_ld_hidden=yes
2351 hppa64*-*-hpux* | ia64*-*-hpux*)
2352 gcc_cv_ld_hidden=yes
2355 # .hidden support was backported to Solaris 8, starting with ld
2357 if test "$ld_vers_minor" -ge 276; then
2358 gcc_cv_ld_hidden=yes
2363 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2364 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2365 # .symbolic was only added in Solaris 9 12/02.
2366 gcc_cv_ld_hidden=yes
2374 libgcc_visibility=no
2375 AC_SUBST(libgcc_visibility)
2376 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2377 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2378 libgcc_visibility=yes
2379 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2380 [Define if your assembler and linker support .hidden.])
2383 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2384 gcc_cv_ld_ro_rw_mix=unknown
2385 if test $in_tree_ld = yes ; then
2386 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2387 && test $in_tree_ld_is_elf = yes; then
2388 gcc_cv_ld_ro_rw_mix=read-write
2390 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2391 echo '.section myfoosect, "a"' > conftest1.s
2392 echo '.section myfoosect, "aw"' > conftest2.s
2393 echo '.byte 1' >> conftest2.s
2394 echo '.section myfoosect, "a"' > conftest3.s
2395 echo '.byte 0' >> conftest3.s
2396 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2397 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2398 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2399 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2400 conftest2.o conftest3.o > /dev/null 2>&1; then
2401 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2402 | sed -e '/myfoosect/!d' -e N`
2403 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2404 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2405 gcc_cv_ld_ro_rw_mix=read-only
2407 gcc_cv_ld_ro_rw_mix=read-write
2412 rm -f conftest.* conftest[123].*
2415 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2416 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2417 [Define if your linker links a mix of read-only
2418 and read-write sections into a read-write section.])
2420 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2422 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2423 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2431 [[# GAS versions before 2.11 do not support uleb128,
2432 # despite appearing to.
2433 # ??? There exists an elf-specific test that will crash
2434 # the assembler. Perhaps it's better to figure out whether
2435 # arbitrary sections are supported and try the test.
2436 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2437 if echo "$as_ver" | grep GNU > /dev/null; then
2438 as_vers=`echo $as_ver | sed -n \
2439 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2440 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2441 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2442 if test $as_major -eq 2 && test $as_minor -lt 11
2444 else gcc_cv_as_leb128=yes
2447 [AC_DEFINE(HAVE_AS_LEB128, 1,
2448 [Define if your assembler supports .sleb128 and .uleb128.])])
2450 # Check if we have assembler support for unwind directives.
2451 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2458 .cfi_escape 1, 2, 3, 4, 5
2462 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2463 # read-only and read-write sections, we need to make sure that the
2464 # assembler used emits read-write .eh_frame sections.
2465 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2466 if test "x$gcc_cv_objdump" != x; then
2467 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2468 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2469 gcc_cv_as_cfi_directive=no
2472 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2473 # On Solaris/x86, make sure that GCC and gas agree on using
2474 # read-only .eh_frame sections for 64-bit.
2475 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2476 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2477 sed -e /.eh_frame/!d -e N | \
2478 grep READONLY > /dev/null; then
2479 gcc_cv_as_cfi_directive=yes
2481 gcc_cv_as_cfi_directive=no
2485 gcc_cv_as_cfi_directive=yes
2490 # no objdump, err on the side of caution
2491 gcc_cv_as_cfi_directive=no
2494 gcc_cv_as_cfi_directive=yes
2498 gcc_cv_as_cfi_directive=yes
2501 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2502 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2506 .cfi_adjust_cfa_offset 64
2508 .cfi_adjust_cfa_offset 128
2511 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2512 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2513 gcc_cv_as_cfi_advance_working=yes
2517 # no objdump, err on the side of caution
2518 gcc_cv_as_cfi_advance_working=no
2520 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2521 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2522 [`if test $gcc_cv_as_cfi_directive = yes \
2523 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2524 [Define 0/1 if your assembler supports CFI directives.])
2526 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2527 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2528 gcc_cv_as_cfi_personality_directive, ,,
2531 .cfi_personality 0, symbol
2533 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2534 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2535 then echo 1; else echo 0; fi`],
2536 [Define 0/1 if your assembler supports .cfi_personality.])
2538 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2539 gcc_cv_as_cfi_sections_directive, ,,
2541 .cfi_sections .debug_frame, .eh_frame
2545 win32 | pe | cygwin* | mingw32* | uwin*)
2546 # Need to check that we generated the correct relocation for the
2547 # .debug_frame section. This was fixed for binutils 2.21.
2548 gcc_cv_as_cfi_sections_directive=no
2549 if test "x$gcc_cv_objdump" != x; then
2550 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2551 grep secrel > /dev/null; then
2552 gcc_cv_as_cfi_sections_directive=yes
2557 gcc_cv_as_cfi_sections_directive=yes
2560 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2561 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2562 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2563 then echo 1; else echo 0; fi`],
2564 [Define 0/1 if your assembler supports .cfi_sections.])
2566 # GAS versions up to and including 2.11.0 may mis-optimize
2568 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2576 .section .eh_frame,"aw",@progbits
2578 .4byte .LECIE1-.LSCIE1
2592 .4byte .LEFDE1-.LASFDE1
2594 .4byte .LASFDE1-__FRAME_BEGIN__
2602 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2603 cat > conftest.lit <<EOF
2604 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2605 0010 01000000 12000000 18000000 00000000 ................
2606 0020 08000000 04080000 0044 .........D @&t@
2608 cat > conftest.big <<EOF
2609 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2610 0010 00000001 00000012 00000018 00000000 ................
2611 0020 00000008 04000000 0844 .........D @&t@
2613 # If the assembler didn't choke, and we can objdump,
2614 # and we got the correct data, then succeed.
2615 # The text in the here-document typically retains its unix-style line
2616 # endings, while the output of objdump will use host line endings.
2617 # Therefore, use diff -b for the comparisons.
2618 if test x$gcc_cv_objdump != x \
2619 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2620 | tail -3 > conftest.got \
2621 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2622 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2624 gcc_cv_as_eh_frame=yes
2625 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2626 gcc_cv_as_eh_frame=buggy
2628 # Uh oh, what do we do now?
2629 gcc_cv_as_eh_frame=no
2632 if test $gcc_cv_as_eh_frame = buggy; then
2633 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2634 [Define if your assembler mis-optimizes .eh_frame data.])
2637 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2638 [elf,2,12,0], [--fatal-warnings],
2639 [.section .rodata.str, "aMS", @progbits, 1])
2640 if test $gcc_cv_as_shf_merge = no; then
2641 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2642 [elf,2,12,0], [--fatal-warnings],
2643 [.section .rodata.str, "aMS", %progbits, 1])
2645 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2646 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2647 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2649 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2650 gcc_cv_as_comdat_group,
2651 [elf,2,16,0], [--fatal-warnings],
2652 [.section .text,"axG",@progbits,.foo,comdat])
2653 if test $gcc_cv_as_comdat_group = yes; then
2654 gcc_cv_as_comdat_group_percent=no
2655 gcc_cv_as_comdat_group_group=no
2657 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2658 gcc_cv_as_comdat_group_percent,
2659 [elf,2,16,0], [--fatal-warnings],
2660 [.section .text,"axG",%progbits,.foo,comdat])
2661 if test $gcc_cv_as_comdat_group_percent = yes; then
2662 gcc_cv_as_comdat_group_group=no
2665 # Sun as uses a completely different syntax.
2670 .group foo,".text%foo",#comdat
2671 .section ".text%foo", #alloc,#execinstr,#progbits
2676 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2678 .group foo,.text%foo,#comdat
2679 .section .text%foo, "ax", @progbits
2685 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2686 gcc_cv_as_comdat_group_group,
2692 if test x"$ld_is_gold" = xyes; then
2694 elif test $in_tree_ld = yes ; then
2696 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2697 && test $in_tree_ld_is_elf = yes; then
2700 elif echo "$ld_ver" | grep GNU > /dev/null; then
2702 if test 0"$ld_date" -lt 20050308; then
2703 if test -n "$ld_date"; then
2704 # If there was date string, but was earlier than 2005-03-08, fail
2706 elif test "$ld_vers_major" -lt 2; then
2708 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2715 *-*-solaris2.1[1-9]*)
2717 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2718 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2721 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2722 # least ld version 1.2267.
2723 if test "$ld_vers_major" -gt 1; then
2725 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2727 elif test "$ld_vers_minor" -ge 2267; then
2732 # Assume linkers other than GNU ld don't support COMDAT group.
2738 # Allow overriding the automatic COMDAT group tests above.
2739 AC_ARG_ENABLE(comdat,
2740 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2741 [comdat_group="$enable_comdat"])
2742 if test $comdat_group = no; then
2743 gcc_cv_as_comdat_group=no
2744 gcc_cv_as_comdat_group_percent=no
2745 gcc_cv_as_comdat_group_group=no
2747 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2748 [`if test $gcc_cv_as_comdat_group = yes \
2749 || test $gcc_cv_as_comdat_group_percent = yes \
2750 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2751 [Define 0/1 if your assembler and linker support COMDAT groups.])
2753 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2754 gcc_cv_as_discriminator,
2758 .loc 1 1 0 discriminator 1],,
2759 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2760 [Define if your assembler supports the .loc discriminator sub-directive.])])
2762 # Thread-local storage - the check is heavily parameterized.
2771 .section ".tdata","awT",@progbits
2774 ldq $27,__tls_get_addr($29) !literal!1
2775 lda $16,foo($29) !tlsgd!1
2776 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2777 ldq $27,__tls_get_addr($29) !literal!2
2778 lda $16,foo($29) !tlsldm!2
2779 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2780 ldq $1,foo($29) !gotdtprel
2781 ldah $2,foo($29) !dtprelhi
2782 lda $3,foo($2) !dtprello
2783 lda $4,foo($29) !dtprel
2784 ldq $1,foo($29) !gottprel
2785 ldah $2,foo($29) !tprelhi
2786 lda $3,foo($2) !tprello
2787 lda $4,foo($29) !tprel'
2790 tls_as_opt=--fatal-warnings
2792 cris-*-*|crisv32-*-*)
2794 .section ".tdata","awT",@progbits
2801 tls_as_opt=--fatal-warnings
2805 .section ".tdata","awT",@progbits
2817 .section ".tdata","awT",@progbits
2821 addil LT%foo-$tls_gdidx$,gp
2822 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2825 addil LT%foo-$tls_ldidx$,gp
2827 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2828 addil LR%foo-$tls_dtpoff$,%ret0
2829 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2831 addil LT%foo-$tls_ieoff$,gp
2832 ldw RT%foo-$tls_ieoff$(%r1),%t2
2835 addil LR%foo-$tls_leoff$,%t1
2836 ldo RR%foo-$tls_leoff$(%r1),%t2'
2839 tls_as_opt=--fatal-warnings
2843 .section ".tdata","awT",%progbits
2854 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2856 i[34567]86-*-solaris2.*)
2858 tga_func=___tls_get_addr
2860 x86_64-*-solaris2.1[0-9]*)
2862 tga_func=__tls_get_addr
2868 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2870 .section .tdata,"awt",@progbits'
2874 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2875 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2879 .section ".tdata","awT",@progbits'
2882 tls_as_opt="--fatal-warnings"
2884 conftest_s="$conftest_s
2888 leal foo@tlsgd(,%ebx,1), %eax
2889 leal foo@tlsldm(%ebx), %eax
2890 leal foo@dtpoff(%eax), %edx
2891 movl foo@gottpoff(%ebx), %eax
2892 subl foo@gottpoff(%ebx), %eax
2893 addl foo@gotntpoff(%ebx), %eax
2894 movl foo@indntpoff, %eax
2895 movl \$foo@tpoff, %eax
2896 subl \$foo@tpoff, %eax
2897 leal foo@ntpoff(%ecx), %eax"
2901 .section ".tdata","awT",@progbits
2905 leaq foo@TLSGD(%rip), %rdi
2906 leaq foo@TLSLD(%rip), %rdi
2907 leaq foo@DTPOFF(%rax), %rdx
2908 movq foo@GOTTPOFF(%rip), %rax
2909 movq $foo@TPOFF, %rax'
2912 tls_as_opt=--fatal-warnings
2916 .section ".tdata","awT",@progbits
2919 addl r16 = @ltoff(@dtpmod(foo#)), gp
2920 addl r17 = @ltoff(@dtprel(foo#)), gp
2921 addl r18 = @ltoff(@tprel(foo#)), gp
2922 addl r19 = @dtprel(foo#), gp
2923 adds r21 = @dtprel(foo#), r13
2924 movl r23 = @dtprel(foo#)
2925 addl r20 = @tprel(foo#), gp
2926 adds r22 = @tprel(foo#), r13
2927 movl r24 = @tprel(foo#)'
2930 tls_as_opt=--fatal-warnings
2934 .section .tdata,"awT",@progbits
2938 addiu $4, $28, %tlsgd(x)
2939 addiu $4, $28, %tlsldm(x)
2940 lui $4, %dtprel_hi(x)
2941 addiu $4, $4, %dtprel_lo(x)
2942 lw $4, %gottprel(x)($28)
2943 lui $4, %tprel_hi(x)
2944 addiu $4, $4, %tprel_lo(x)'
2947 tls_as_opt='-32 --fatal-warnings'
2951 .section .tdata,"awT",@progbits
2956 move.l x@TLSGD(%a5),%a0
2957 move.l x@TLSLDM(%a5),%a0
2958 move.l x@TLSLDO(%a5),%a0
2959 move.l x@TLSIE(%a5),%a0
2960 move.l x@TLSLE(%a5),%a0'
2963 tls_as_opt='--fatal-warnings'
2967 .section ".tdata","awT",@progbits
2975 addi 3,31,ld0@got@tlsgd
2977 addi 3,31,x1@got@tlsld
2980 addis 9,3,x2@dtprel@ha
2981 addi 9,9,x2@dtprel@l
2982 lwz 9,x3@got@tprel(31)
2985 addis 9,2,x2@tprel@ha
2986 addi 9,9,x2@tprel@l'
2989 tls_as_opt="-a32 --fatal-warnings"
2993 .section ".tdata","awT",@progbits
3001 addi 3,2,ld0@got@tlsgd
3007 addi 3,2,x1@got@tlsld
3013 addis 9,3,x2@dtprel@ha
3014 addi 9,9,x2@dtprel@l
3017 ld 9,x3@got@dtprel(2)
3023 tls_as_opt="-a64 --fatal-warnings"
3027 .section ".tdata","awT",@progbits
3036 l %r1,foo@GOTNTPOFF(%r12)
3037 l %r1,0(%r1):tls_load:foo
3038 bas %r14,0(%r1,%r13):tls_gdcall:foo
3039 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3042 tls_as_opt="-m31 --fatal-warnings"
3046 .section ".tdata","awT",@progbits
3054 lg %r1,foo@GOTNTPOFF(%r12)
3055 larl %r1,foo@INDNTPOFF
3056 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3057 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3060 tls_as_opt="-m64 -Aesame --fatal-warnings"
3062 sh-*-* | sh[34]-*-*)
3064 .section ".tdata","awT",@progbits
3074 tls_as_opt=--fatal-warnings
3078 sparc*-sun-solaris2.*)
3080 tga_func=__tls_get_addr
3086 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3088 .section ".tdata",#alloc,#write,#tls'
3093 .section ".tdata","awT",@progbits'
3096 tls_as_opt="-32 --fatal-warnings"
3098 conftest_s="$conftest_s
3101 sethi %tgd_hi22(foo), %o0
3102 add %o0, %tgd_lo10(foo), %o1
3103 add %l7, %o1, %o0, %tgd_add(foo)
3104 call __tls_get_addr, %tgd_call(foo)
3105 sethi %tldm_hi22(foo), %l1
3106 add %l1, %tldm_lo10(foo), %l2
3107 add %l7, %l2, %o0, %tldm_add(foo)
3108 call __tls_get_addr, %tldm_call(foo)
3109 sethi %tldo_hix22(foo), %l3
3110 xor %l3, %tldo_lox10(foo), %l4
3111 add %o0, %l4, %l5, %tldo_add(foo)
3112 sethi %tie_hi22(foo), %o3
3113 add %o3, %tie_lo10(foo), %o3
3114 ld [%l7 + %o3], %o2, %tie_ld(foo)
3115 add %g7, %o2, %o4, %tie_add(foo)
3116 sethi %tle_hix22(foo), %l1
3117 xor %l1, %tle_lox10(foo), %o5
3118 ld [%g7 + %o5], %o1"
3122 .section ".tdata","awT",@progbits
3125 movi a8, foo@TLSFUNC
3126 movi a10, foo@TLSARG
3127 callx8.tls a8, foo@TLSCALL'
3134 if test "x$enable_tls" = xno ; then
3135 : # TLS explicitly disabled.
3136 elif test "x$enable_tls" = xyes ; then
3137 set_have_as_tls=yes # TLS explicitly enabled.
3138 elif test -z "$tls_first_major"; then
3139 : # If we don't have a check, assume no support.
3141 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3142 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3143 [set_have_as_tls=yes])
3147 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3148 # with TLS support are in use, native TLS cannot work.
3152 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3153 # gld with TLS support are in use, native TLS cannot work.
3156 # TLS was introduced in the Solaris 9 FCS release and backported to
3157 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3158 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3159 # ld and GCC don't support any longer.
3161 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3163 # Check ld and ld.so.1 TLS support.
3164 if echo "$ld_ver" | grep GNU > /dev/null; then
3165 # Assume all interesting versions of GNU ld have TLS support.
3166 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3170 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3172 min_tls_ld_vers_minor=280
3174 # Solaris 8/SPARC ld has TLS support since version 1.272.
3175 sparc*-*-solaris2.8)
3176 min_tls_ld_vers_minor=272
3178 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3180 min_tls_ld_vers_minor=374
3182 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3183 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3184 min_tls_ld_vers_minor=343
3187 if test "$ld_vers_major" -gt 1 || \
3188 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3194 AC_MSG_RESULT($ld_tls_support)
3197 save_LDFLAGS="$LDFLAGS"
3201 AC_MSG_CHECKING(alternate thread library)
3203 # TLS support was backported to Solaris 8 patches, but only lives in
3204 # the alternate thread library which became the default in Solaris 9.
3205 # We want to always use that, irrespective of TLS support.
3207 # Take multilib subdir into account. There's no spec to handle
3208 # this. The 64 symlink exists since Solaris 8.
3209 lwp_dir=/usr/lib/lwp
3210 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3211 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3218 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3219 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3220 [Define to the linker flags to use for -pthread.])
3221 AC_MSG_RESULT($lwp_dir)
3223 AC_MSG_CHECKING(library containing $tga_func)
3224 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3225 # (32-bit x86) only lived in libthread, so check for that. Keep
3226 # set_have_as_tls if found, disable if not.
3227 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3228 # Clear LIBS if we cannot support TLS.
3229 if test $set_have_as_tls = no; then
3232 # Always define LIB_TLS_SPEC, even without TLS support.
3233 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3234 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3235 AC_MSG_RESULT($LIBS)
3238 LDFLAGS="$save_LDFLAGS"
3241 if test $set_have_as_tls = yes ; then
3242 AC_DEFINE(HAVE_AS_TLS, 1,
3243 [Define if your assembler and linker support thread-local storage.])
3246 # Target-specific assembler checks.
3248 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3249 gcc_cv_ld_static_dynamic=no
3250 gcc_cv_ld_static_option='-Bstatic'
3251 gcc_cv_ld_dynamic_option='-Bdynamic'
3252 if test $in_tree_ld = yes ; then
3253 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3254 gcc_cv_ld_static_dynamic=yes
3256 elif test x$gcc_cv_ld != x; then
3257 # Check if linker supports -Bstatic/-Bdynamic option
3258 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3259 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3260 gcc_cv_ld_static_dynamic=yes
3263 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3265 gcc_cv_ld_static_dynamic=yes
3266 gcc_cv_ld_static_option="-noso"
3267 gcc_cv_ld_dynamic_option="-so_archive"
3269 # HP-UX ld uses -a flags to select between shared and archive.
3271 if test x"$gnu_ld" = xno; then
3272 gcc_cv_ld_static_dynamic=yes
3273 gcc_cv_ld_static_option="-aarchive_shared"
3274 gcc_cv_ld_dynamic_option="-adefault"
3277 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3279 gcc_cv_ld_static_dynamic=yes
3281 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3283 gcc_cv_ld_static_dynamic=yes
3288 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3289 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3290 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3291 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3292 [Define to the linker option to disable use of shared objects.])
3293 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3294 [Define to the linker option to enable use of shared objects.])
3296 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3298 if test x"$demangler_in_ld" = xyes; then
3299 AC_MSG_CHECKING(linker --demangle support)
3300 gcc_cv_ld_demangle=no
3301 if test $in_tree_ld = yes; then
3302 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3303 gcc_cv_ld_demangle=yes
3305 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3306 # Check if the GNU linker supports --demangle option
3307 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3308 gcc_cv_ld_demangle=yes
3311 if test x"$gcc_cv_ld_demangle" = xyes; then
3312 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3313 [Define if your linker supports --demangle option.])
3315 AC_MSG_RESULT($gcc_cv_ld_demangle)
3318 AC_MSG_CHECKING(linker plugin support)
3320 if test -f liblto_plugin.la; then
3321 save_ld_ver="$ld_ver"
3322 save_ld_vers_major="$ld_vers_major"
3323 save_ld_vers_minor="$ld_vers_minor"
3324 save_ld_is_gold="$ld_is_gold"
3328 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3330 # FIXME: ld_is_gold?
3331 ld_vers_major="$gcc_cv_gld_major_version"
3332 ld_vers_minor="$gcc_cv_gld_minor_version"
3334 # Determine plugin linker version.
3335 # FIXME: Partial duplicate from above, generalize.
3337 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3338 if echo "$ld_ver" | grep GNU > /dev/null; then
3339 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3341 ld_vers=`echo $ld_ver | sed -n \
3342 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3344 ld_vers=`echo $ld_ver | sed -n \
3345 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3347 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3348 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3353 # Determine plugin support.
3354 if echo "$ld_ver" | grep GNU > /dev/null; then
3355 # Require GNU ld or gold 2.21+ for plugin support by default.
3356 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3358 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3359 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3364 ld_ver="$save_ld_ver"
3365 ld_vers_major="$save_ld_vers_major"
3366 ld_vers_minor="$save_ld_vers_minor"
3367 ld_is_gold="$save_ld_is_gold"
3369 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3370 [Define to the level of your linker's plugin support.])
3371 AC_MSG_RESULT($gcc_cv_lto_plugin)
3374 # All TARGET_ABI_OSF targets.
3375 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3376 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3377 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3380 extbl $3, $2, $3 !lituse_bytoff!1
3381 ldq $2, a($29) !literal!1
3382 ldq $4, b($29) !literal!2
3383 ldq_u $3, 0($2) !lituse_base!1
3384 ldq $27, f($29) !literal!5
3385 jsr $26, ($27), f !lituse_jsr!5
3386 ldah $29, 0($26) !gpdisp!3
3387 lda $0, c($29) !gprel
3388 ldah $1, d($29) !gprelhigh
3389 lda $1, d($1) !gprellow
3390 lda $29, 0($29) !gpdisp!3],,
3391 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3392 [Define if your assembler supports explicit relocations.])])
3393 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3394 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3397 ldq $27, a($29) !literal!1
3398 jsr $26, ($27), a !lituse_jsrdirect!1],,
3399 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3400 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3404 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3405 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3406 [-no-mul-bug-abort], [.text],,
3407 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3408 [Define if your assembler supports the -no-mul-bug-abort option.])])
3412 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3413 [.register %g2, #scratch],,
3414 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3415 [Define if your assembler supports .register.])])
3417 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3419 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3420 [Define if your assembler supports -relax option.])])
3422 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3423 gcc_cv_as_sparc_gotdata_op,,
3430 sethi %gdop_hix22(foo), %g1
3431 xor %g1, %gdop_lox10(foo), %g1
3432 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3433 [if test x$gcc_cv_ld != x \
3434 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3435 if test x$gcc_cv_objdump != x; then
3436 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3437 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3438 gcc_cv_as_sparc_gotdata_op=no
3440 gcc_cv_as_sparc_gotdata_op=yes
3445 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3446 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3448 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3449 gcc_cv_as_sparc_ua_pcrel,,
3457 .uaword %r_disp32(foo)],
3458 [if test x$gcc_cv_ld != x \
3459 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3460 gcc_cv_as_sparc_ua_pcrel=yes
3463 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3464 [Define if your assembler and linker support unaligned PC relative relocs.])
3466 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3467 gcc_cv_as_sparc_ua_pcrel_hidden,,
3472 .uaword %r_disp32(foo)
3473 .byte 0x32, 0x33, 0x34
3478 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3479 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3480 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3481 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3482 if $gcc_cv_objdump -R conftest 2> /dev/null \
3483 | grep 'DISP32' > /dev/null 2>&1; then
3486 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3490 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3491 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3492 ]) # unaligned pcrel relocs
3494 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3495 gcc_cv_as_sparc_offsetable_lo10,,
3498 or %g1, %lo(ab) + 12, %g1
3499 or %g1, %lo(ab + 12), %g1],
3500 [if test x$gcc_cv_objdump != x \
3501 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3502 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3503 gcc_cv_as_sparc_offsetable_lo10=yes
3505 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3506 [Define if your assembler supports offsetable %lo().])])
3508 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3509 gcc_cv_as_sparc_fmaf,,
3512 .register %g2, #scratch
3513 .register %g3, #scratch
3515 fmaddd %f0, %f2, %f4, %f6
3516 addxccc %g1, %g2, %g3
3517 fsrl32 %f2, %f4, %f8
3518 fnaddd %f10, %f12, %f14],,
3519 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3520 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3524 i[34567]86-*-* | x86_64-*-*)
3528 # Full C++ conformance when using a shared libstdc++-v3 requires some
3529 # support from the Cygwin DLL, which in more recent versions exports
3530 # wrappers to aid in interposing and redirecting operators new, delete,
3531 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3532 # are configuring for a version of Cygwin that exports the wrappers.
3533 if test x$host = x$target; then
3534 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3536 # Can't check presence of libc functions during cross-compile, so
3537 # we just have to assume we're building for an up-to-date target.
3538 gcc_ac_cygwin_dll_wrappers=yes
3540 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3541 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3542 [Define if you want to generate code by default that assumes that the
3543 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3546 cygwin* | pe | mingw32*)
3547 # Recent binutils allows the three-operand form of ".comm" on PE. This
3548 # definition is used unconditionally to initialise the default state of
3549 # the target option variable that governs usage of the feature.
3550 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3551 [2,19,52],,[.comm foo,1,32])
3552 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3553 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3554 [Define if your assembler supports specifying the alignment
3555 of objects allocated using the GAS .comm command.])
3556 # Used for DWARF 2 in PE
3557 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3558 gcc_cv_as_ix86_pe_secrel32,
3564 [if test x$gcc_cv_ld != x \
3565 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3566 gcc_cv_as_ix86_pe_secrel32=yes
3569 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3570 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3571 # Test if the assembler supports the extended form of the .section
3572 # directive that specifies section alignment. LTO support uses this,
3573 # but normally only after installation, so we warn but don't fail the
3574 # configure if LTO is enabled but the assembler does not support it.
3575 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3576 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3577 if test x$gcc_cv_as_section_has_align != xyes; then
3578 case ",$enable_languages," in
3580 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3584 # Test if the assembler supports the section flag 'e' for specifying
3585 # an excluded section.
3586 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3590 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3591 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3592 [Define if your assembler supports specifying the section flag e.])
3596 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3597 gcc_cv_as_ix86_filds,,,
3598 [filds mem; fists mem],,
3599 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3600 [Define if your assembler uses filds and fists mnemonics.])])
3602 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3603 gcc_cv_as_ix86_fildq,,,
3604 [fildq mem; fistpq mem],,
3605 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3606 [Define if your assembler uses fildq and fistq mnemonics.])])
3608 gcc_GAS_CHECK_FEATURE([cmov syntax],
3609 gcc_cv_as_ix86_cmov_sun_syntax,,,
3610 [cmovl.l %edx, %eax],,
3611 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3612 [Define if your assembler supports the Sun syntax for cmov.])])
3614 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3615 gcc_cv_as_ix86_ffreep,,,
3617 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3618 [Define if your assembler supports the ffreep mnemonic.])])
3620 gcc_GAS_CHECK_FEATURE([.quad directive],
3621 gcc_cv_as_ix86_quad,,,
3623 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3624 [Define if your assembler supports the .quad directive.])])
3626 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3627 gcc_cv_as_ix86_sahf,,,
3630 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3631 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3633 gcc_GAS_CHECK_FEATURE([swap suffix],
3634 gcc_cv_as_ix86_swap,,,
3635 [movl.s %esp, %ebp],,
3636 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3637 [Define if your assembler supports the swap suffix.])])
3639 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3640 gcc_cv_as_ix86_diff_sect_delta,,,
3648 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3649 [Define if your assembler supports the subtraction of symbols in different sections.])])
3651 # These two are used unconditionally by i386.[ch]; it is to be defined
3652 # to 1 if the feature is present, 0 otherwise.
3653 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3654 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3660 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3661 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3662 [Define true if the assembler supports '.long foo@GOTOFF'.])
3664 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3665 gcc_cv_as_ix86_rep_lock_prefix,,,
3667 lock addl %edi, (%eax,%esi)
3668 lock orl $0, (%esp)],,
3669 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3670 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3672 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3673 gcc_cv_as_ix86_tlsgdplt,,,
3674 [call tls_gd@tlsgdplt],,
3675 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3676 [Define if your assembler supports @tlsgdplt.])])
3678 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3679 gcc_cv_as_ix86_tlsldmplt,,,
3680 [call tls_ld@tlsldmplt],,
3681 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3682 [Define if your assembler supports @tlsldmplt.])])
3687 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3688 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3690 addl r15 = @ltoffx(x#), gp
3692 ld8.mov r16 = [[r15]], x#],,
3693 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3694 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3700 *-*-aix*) conftest_s=' .machine "pwr5"
3704 gcc_GAS_CHECK_FEATURE([.machine directive support],
3705 gcc_cv_as_machine_directive,,,
3706 [ .machine ppc7400])
3707 if test x$gcc_cv_as_machine_directive != xyes; then
3708 echo "*** This target requires an assembler supporting \".machine\"" >&2
3709 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3710 test x$build = x$target && exit 1
3714 *) conftest_s=' .machine power4
3719 gcc_GAS_CHECK_FEATURE([mfcr field support],
3720 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3722 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3723 [Define if your assembler supports mfcr field.])])
3726 *-*-aix*) conftest_s=' .machine "pwr5"
3729 *) conftest_s=' .machine power5
3734 gcc_GAS_CHECK_FEATURE([popcntb support],
3735 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3737 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3738 [Define if your assembler supports popcntb field.])])
3741 *-*-aix*) conftest_s=' .machine "pwr5x"
3744 *) conftest_s=' .machine power5
3749 gcc_GAS_CHECK_FEATURE([fp round support],
3750 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3752 [AC_DEFINE(HAVE_AS_FPRND, 1,
3753 [Define if your assembler supports fprnd.])])
3756 *-*-aix*) conftest_s=' .machine "pwr6"
3759 *) conftest_s=' .machine power6
3764 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3765 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3767 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3768 [Define if your assembler supports mffgpr and mftgpr.])])
3771 *-*-aix*) conftest_s=' .csect .text[[PR]]
3773 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3777 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3778 *) conftest_s=' .text
3780 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3783 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3784 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3786 [AC_DEFINE(HAVE_AS_REL16, 1,
3787 [Define if your assembler supports R_PPC_REL16 relocs.])])
3790 *-*-aix*) conftest_s=' .machine "pwr6"
3793 *) conftest_s=' .machine power6
3798 gcc_GAS_CHECK_FEATURE([compare bytes support],
3799 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3801 [AC_DEFINE(HAVE_AS_CMPB, 1,
3802 [Define if your assembler supports cmpb.])])
3805 *-*-aix*) conftest_s=' .machine "pwr6"
3808 *) conftest_s=' .machine power6
3813 gcc_GAS_CHECK_FEATURE([decimal float support],
3814 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3816 [AC_DEFINE(HAVE_AS_DFP, 1,
3817 [Define if your assembler supports DFP instructions.])])
3820 *-*-aix*) conftest_s=' .machine "pwr7"
3823 *) conftest_s=' .machine power7
3828 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3829 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3831 [AC_DEFINE(HAVE_AS_VSX, 1,
3832 [Define if your assembler supports VSX instructions.])])
3835 *-*-aix*) conftest_s=' .machine "pwr7"
3838 *) conftest_s=' .machine power7
3843 gcc_GAS_CHECK_FEATURE([popcntd support],
3844 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3846 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3847 [Define if your assembler supports POPCNTD instructions.])])
3850 *-*-aix*) conftest_s=' .csect .text[[PR]]
3852 *) conftest_s=' .text
3856 gcc_GAS_CHECK_FEATURE([lwsync support],
3857 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3859 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3860 [Define if your assembler supports LWSYNC instructions.])])
3863 *-*-aix*) conftest_s=' .machine "476"
3866 *) conftest_s=' .machine "476"
3871 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3872 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3874 [AC_DEFINE(HAVE_AS_DCI, 1,
3875 [Define if your assembler supports the DCI/ICI instructions.])])
3877 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3878 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3879 [.gnu_attribute 4,1],,
3880 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3881 [Define if your assembler supports .gnu_attribute.])])
3883 gcc_GAS_CHECK_FEATURE([tls marker support],
3884 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3885 [ bl __tls_get_addr(x@tlsgd)],,
3886 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3887 [Define if your assembler supports arg info for __tls_get_addr.])])
3891 gcc_GAS_CHECK_FEATURE([.ref support],
3892 gcc_cv_as_aix_ref, [2.21.0],,
3893 [ .csect stuff[[rw]]
3899 [AC_DEFINE(HAVE_AS_REF, 1,
3900 [Define if your assembler supports .ref])])
3906 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3907 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3908 [ lw $4,%gp_rel(foo)($4)],,
3909 [if test x$target_cpu_default = x
3910 then target_cpu_default=MASK_EXPLICIT_RELOCS
3911 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3913 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3914 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3915 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3916 [Define if the assembler understands -mno-shared.])])
3918 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3919 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3920 [.gnu_attribute 4,1],,
3921 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3922 [Define if your assembler supports .gnu_attribute.])])
3924 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3925 gcc_cv_as_mips_dtprelword, [2,18,0],,
3926 [.section .tdata,"awT",@progbits
3930 .dtprelword x+0x8000],,
3931 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3932 [Define if your assembler supports .dtprelword.])])
3934 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3935 gcc_cv_as_mips_dspr1_mult,,,
3945 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3946 [Define if your assembler supports DSPR1 mult.])])
3948 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3949 gcc_cv_as_ld_jalr_reloc=no
3950 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3951 if test $in_tree_ld = yes ; then
3952 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3953 && test $in_tree_ld_is_elf = yes; then
3954 gcc_cv_as_ld_jalr_reloc=yes
3956 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3957 echo ' .ent x' > conftest.s
3958 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3959 echo ' ld $25,%call16(y)($28)' >> conftest.s
3960 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3961 echo '1: jalr $25' >> conftest.s
3962 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3963 echo '1: jalr $25' >> conftest.s
3964 echo ' .end x' >> conftest.s
3965 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3966 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3967 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3968 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3969 gcc_cv_as_ld_jalr_reloc=yes
3975 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3976 if test x$target_cpu_default = x; then
3977 target_cpu_default=MASK_RELAX_PIC_CALLS
3979 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3982 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3984 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3985 [gcc_cv_ld_mips_personality_relaxation],
3986 [gcc_cv_ld_mips_personality_relaxation=no
3987 if test $in_tree_ld = yes ; then
3988 if test "$gcc_cv_gld_major_version" -eq 2 \
3989 -a "$gcc_cv_gld_minor_version" -ge 21 \
3990 -o "$gcc_cv_gld_major_version" -gt 2; then
3991 gcc_cv_ld_mips_personality_relaxation=yes
3993 elif test x$gcc_cv_as != x \
3994 -a x$gcc_cv_ld != x \
3995 -a x$gcc_cv_readelf != x ; then
3996 cat > conftest.s <<EOF
3998 .cfi_personality 0x80,indirect_ptr
4005 .section .data,"aw",@progbits
4009 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4010 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4011 if $gcc_cv_readelf -d conftest 2>&1 \
4012 | grep TEXTREL > /dev/null 2>&1; then
4014 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4015 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4018 gcc_cv_ld_mips_personality_relaxation=yes
4022 rm -f conftest.s conftest.o conftest])
4023 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4024 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4025 [Define if your linker can relax absolute .eh_frame personality
4026 pointers into PC-relative form.])
4031 # Mips and HP-UX need the GNU assembler.
4032 # Linux on IA64 might be able to use the Intel assembler.
4035 mips*-*-* | *-*-hpux* )
4036 if test x$gas_flag = xyes \
4037 || test x"$host" != x"$build" \
4038 || test ! -x "$gcc_cv_as" \
4039 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4042 echo "*** This configuration requires the GNU assembler" >&2
4048 # ??? Not all targets support dwarf2 debug_line, even within a version
4049 # of gas. Moreover, we need to emit a valid instruction to trigger any
4050 # info to the output file. So, as supported targets are added to gas 2.11,
4051 # add some instruction here to (also) show we expect this might work.
4052 # ??? Once 2.11 is released, probably need to add first known working
4053 # version to the per-target configury.
4055 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4056 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4066 if test x"$insn" != x; then
4068 .file 1 \"conftest.s\"
4071 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4072 gcc_cv_as_dwarf2_debug_line,
4073 [elf,2,11,0],, [$conftest_s],
4074 [if test x$gcc_cv_objdump != x \
4075 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4076 | grep debug_line > /dev/null 2>&1; then
4077 gcc_cv_as_dwarf2_debug_line=yes
4080 # The .debug_line file table must be in the exact order that
4081 # we specified the files, since these indices are also used
4082 # by DW_AT_decl_file. Approximate this test by testing if
4083 # the assembler bitches if the same index is assigned twice.
4084 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4085 gcc_cv_as_dwarf2_file_buggy,,,
4089 if test $gcc_cv_as_dwarf2_debug_line = yes \
4090 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4091 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4092 [Define if your assembler supports dwarf2 .file/.loc directives,
4093 and preserves file table indices exactly as given.])
4096 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4097 gcc_cv_as_gdwarf2_flag,
4098 [elf,2,11,0], [--gdwarf2], [$insn],,
4099 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4100 [Define if your assembler supports the --gdwarf2 option.])])
4102 gcc_GAS_CHECK_FEATURE([--gstabs option],
4103 gcc_cv_as_gstabs_flag,
4104 [elf,2,11,0], [--gstabs], [$insn],
4105 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4106 # and warns about it, but still exits successfully. So check for
4108 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4110 else gcc_cv_as_gstabs_flag=yes
4112 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4113 [Define if your assembler supports the --gstabs option.])])
4115 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4116 gcc_cv_as_debug_prefix_map_flag,
4117 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4118 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4119 [Define if your assembler supports the --debug-prefix-map option.])])
4122 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4125 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4126 [Define if your assembler supports .lcomm with an alignment field.])])
4128 AC_ARG_ENABLE(gnu-unique-object,
4129 [AS_HELP_STRING([--enable-gnu-unique-object],
4130 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4131 [case $enable_gnu_unique_object in
4133 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4134 Valid choices are 'yes' and 'no'.]) ;;
4136 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4138 [.type foo, @gnu_unique_object],,
4139 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4140 [[if test x$host = x$build -a x$host = x$target &&
4141 ldd --version 2>/dev/null &&
4142 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4143 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4144 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4145 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4146 if test "$glibcnum" -ge 2011 ; then
4147 enable_gnu_unique_object=yes
4150 if test x$enable_gnu_unique_object = xyes; then
4151 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4152 [Define if your assembler supports @gnu_unique_object.])
4155 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4156 [gcc_cv_as_line_zero],
4157 [gcc_cv_as_line_zero=no
4158 if test $in_tree_gas = yes; then
4159 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4160 elif test "x$gcc_cv_as" != x; then
4161 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4162 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4163 test "x`cat conftest.out`" = x
4165 gcc_cv_as_line_zero=yes
4167 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4168 cat conftest.s >&AS_MESSAGE_LOG_FD
4169 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4170 cat conftest.out >&AS_MESSAGE_LOG_FD
4172 rm -f conftest.o conftest.s conftest.out
4174 if test "x$gcc_cv_as_line_zero" = xyes; then
4175 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4176 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4179 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4180 gcc_cv_ld_eh_frame_hdr=no
4181 if test $in_tree_ld = yes ; then
4182 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4183 && test $in_tree_ld_is_elf = yes; then
4184 gcc_cv_ld_eh_frame_hdr=yes
4186 elif test x$gcc_cv_ld != x; then
4187 if echo "$ld_ver" | grep GNU > /dev/null; then
4188 # Check if linker supports --eh-frame-hdr option
4189 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4190 gcc_cv_ld_eh_frame_hdr=yes
4195 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4196 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4197 gcc_cv_ld_eh_frame_hdr=yes
4203 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4204 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4205 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4206 [Define if your linker supports .eh_frame_hdr.])
4208 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4210 AC_MSG_CHECKING(linker position independent executable support)
4212 if test $in_tree_ld = yes ; then
4213 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4214 && test $in_tree_ld_is_elf = yes; then
4217 elif test x$gcc_cv_ld != x; then
4218 # Check if linker supports -pie option
4219 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4223 if test x"$gcc_cv_ld_pie" = xyes; then
4224 AC_DEFINE(HAVE_LD_PIE, 1,
4225 [Define if your linker supports -pie option.])
4227 AC_MSG_RESULT($gcc_cv_ld_pie)
4229 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4230 gcc_cv_ld_eh_gc_sections=no
4231 if test $in_tree_ld = yes ; then
4232 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4233 && test $in_tree_ld_is_elf = yes; then
4234 gcc_cv_ld_eh_gc_sections=yes
4236 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4237 cat > conftest.s <<EOF
4240 .type _start, @function
4243 .size _start, .-_start
4244 .section .text.foo,"ax",@progbits
4245 .type foo, @function
4249 .section .gcc_except_table.foo,"a",@progbits
4252 .section .eh_frame,"a",@progbits
4255 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4256 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4257 | grep "gc-sections option ignored" > /dev/null; then
4258 gcc_cv_ld_eh_gc_sections=no
4259 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4260 | grep gcc_except_table > /dev/null; then
4261 gcc_cv_ld_eh_gc_sections=yes
4262 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4263 if test x$gcc_cv_as_comdat_group != xyes; then
4264 gcc_cv_ld_eh_gc_sections=no
4265 cat > conftest.s <<EOF
4268 .type _start, @function
4271 .size _start, .-_start
4272 .section .gnu.linkonce.t.foo,"ax",@progbits
4273 .type foo, @function
4277 .section .gcc_except_table.foo,"a",@progbits
4280 .section .eh_frame,"a",@progbits
4283 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4284 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4285 | grep "gc-sections option ignored" > /dev/null; then
4286 gcc_cv_ld_eh_gc_sections=no
4287 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4288 | grep gcc_except_table > /dev/null; then
4289 gcc_cv_ld_eh_gc_sections=yes
4295 rm -f conftest.s conftest.o conftest
4299 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4300 gcc_cv_ld_eh_gc_sections=no
4303 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4304 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4305 [Define if your linker supports garbage collection of
4306 sections in presence of EH frames.])
4308 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4310 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4311 gcc_cv_ld_eh_gc_sections_bug=no
4312 if test $in_tree_ld = yes ; then
4313 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4314 && test $in_tree_ld_is_elf = yes; then
4315 gcc_cv_ld_eh_gc_sections_bug=yes
4317 elif test x$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
4318 gcc_cv_ld_eh_gc_sections_bug=yes
4319 cat > conftest.s <<EOF
4322 .type _start, @function
4325 .size _start, .-_start
4326 .section .text.startup.foo,"ax",@progbits
4327 .type foo, @function
4331 .section .gcc_except_table.foo,"a",@progbits
4334 .section .eh_frame,"a",@progbits
4337 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4338 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4339 | grep "gc-sections option ignored" > /dev/null; then
4341 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4342 | grep gcc_except_table > /dev/null; then
4343 gcc_cv_ld_eh_gc_sections_bug=no
4346 rm -f conftest.s conftest.o conftest
4348 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4349 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4350 [Define if your linker has buggy garbage collection of
4351 sections support when .text.startup.foo like sections are used.])
4353 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4359 AC_CACHE_CHECK(linker --as-needed support,
4360 gcc_cv_ld_as_needed,
4361 [gcc_cv_ld_as_needed=no
4362 if test $in_tree_ld = yes ; then
4363 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4364 && test $in_tree_ld_is_elf = yes; then
4365 gcc_cv_ld_as_needed=yes
4367 elif test x$gcc_cv_ld != x; then
4368 # Check if linker supports --as-needed and --no-as-needed options
4369 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4370 gcc_cv_ld_as_needed=yes
4374 if test x"$gcc_cv_ld_as_needed" = xyes; then
4375 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4376 [Define if your linker supports --as-needed and --no-as-needed options.])
4379 case "$target:$tm_file" in
4380 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4381 AC_CACHE_CHECK(linker support for omitting dot symbols,
4382 gcc_cv_ld_no_dot_syms,
4383 [gcc_cv_ld_no_dot_syms=no
4384 if test $in_tree_ld = yes ; then
4385 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4386 gcc_cv_ld_no_dot_syms=yes
4388 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4389 cat > conftest1.s <<EOF
4393 cat > conftest2.s <<EOF
4394 .section ".opd","aw"
4399 .quad .LEfoo,.TOC.@tocbase,0
4405 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4406 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4407 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4408 gcc_cv_ld_no_dot_syms=yes
4410 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4413 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4414 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4415 [Define if your PowerPC64 linker only needs function descriptor syms.])
4418 AC_CACHE_CHECK(linker large toc support,
4419 gcc_cv_ld_large_toc,
4420 [gcc_cv_ld_large_toc=no
4421 if test $in_tree_ld = yes ; then
4422 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4423 gcc_cv_ld_large_toc=yes
4425 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4426 cat > conftest.s <<EOF
4427 .section ".tbss","awT",@nobits
4433 addis 9,13,ie0@got@tprel@ha
4434 ld 9,ie0@got@tprel@l(9)
4436 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4437 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4438 gcc_cv_ld_large_toc=yes
4440 rm -f conftest conftest.o conftest.s
4443 if test x"$gcc_cv_ld_large_toc" = xyes; then
4444 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4445 [Define if your PowerPC64 linker supports a large TOC.])
4450 AC_CACHE_CHECK(linker --build-id support,
4452 [gcc_cv_ld_buildid=no
4453 if test $in_tree_ld = yes ; then
4454 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4455 "$gcc_cv_gld_minor_version" -ge 18 -o \
4456 "$gcc_cv_gld_major_version" -gt 2 \
4457 && test $in_tree_ld_is_elf = yes; then
4458 gcc_cv_ld_buildid=yes
4460 elif test x$gcc_cv_ld != x; then
4461 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4462 gcc_cv_ld_buildid=yes
4465 if test x"$gcc_cv_ld_buildid" = xyes; then
4466 AC_DEFINE(HAVE_LD_BUILDID, 1,
4467 [Define if your linker supports --build-id.])
4470 AC_ARG_ENABLE(linker-build-id,
4471 [AS_HELP_STRING([--enable-linker-build-id],
4472 [compiler will always pass --build-id to linker])],
4474 enable_linker_build_id=no)
4476 if test x"$enable_linker_build_id" = xyes; then
4477 if test x"$gcc_cv_ld_buildid" = xyes; then
4478 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4479 [Define if gcc should always pass --build-id to linker.])
4481 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4485 # In binutils 2.21, GNU ld gained support for new emulations fully
4486 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4487 AC_CACHE_CHECK(linker *_sol2 emulation support,
4488 gcc_cv_ld_sol2_emulation,
4489 [gcc_cv_ld_sol2_emulation=no
4490 if test $in_tree_ld = yes ; then
4491 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4492 "$gcc_cv_gld_minor_version" -ge 21 -o \
4493 "$gcc_cv_gld_major_version" -gt 2 \
4494 && test $in_tree_ld_is_elf = yes; then
4495 gcc_cv_ld_sol2_emulation=yes
4497 elif test x$gcc_cv_ld != x; then
4498 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4499 grep _sol2 > /dev/null; then
4500 gcc_cv_ld_sol2_emulation=yes
4503 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4504 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4505 [Define if your linker supports the *_sol2 emulations.])
4508 AC_CACHE_CHECK(linker --sysroot support,
4510 [gcc_cv_ld_sysroot=no
4511 if test $in_tree_ld = yes ; then
4512 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4513 gcc_cv_ld_sysroot=yes
4515 elif test x$gcc_cv_ld != x; then
4516 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4517 gcc_cv_ld_sysroot=yes
4520 if test x"$gcc_cv_ld_sysroot" = xyes; then
4521 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4522 [Define if your linker supports --sysroot.])
4525 if test x$with_sysroot = x && test x$host = x$target \
4526 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4527 && test "$prefix" != "NONE"; then
4528 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4529 [Define to PREFIX/include if cpp should also search that directory.])
4532 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4533 if test "x$with_headers" != x; then
4534 target_header_dir=$with_headers
4535 elif test "x$with_sysroot" = x; then
4536 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4537 elif test "x$with_build_sysroot" != "x"; then
4538 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4539 elif test "x$with_sysroot" = xyes; then
4540 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4542 target_header_dir="${with_sysroot}${native_system_header_dir}"
4545 target_header_dir=${native_system_header_dir}
4548 # Test for stack protector support in target C library.
4549 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4550 gcc_cv_libc_provides_ssp,
4551 [gcc_cv_libc_provides_ssp=no
4553 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4554 [# glibc 2.4 and later provides __stack_chk_fail and
4555 # either __stack_chk_guard, or TLS access to stack guard canary.
4556 if test -f $target_header_dir/features.h \
4557 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4558 $target_header_dir/features.h > /dev/null; then
4559 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4560 $target_header_dir/features.h > /dev/null; then
4561 gcc_cv_libc_provides_ssp=yes
4562 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4563 $target_header_dir/features.h > /dev/null \
4564 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4565 $target_header_dir/features.h > /dev/null; then
4566 gcc_cv_libc_provides_ssp=yes
4567 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4568 $target_header_dir/features.h > /dev/null && \
4569 test -f $target_header_dir/bits/uClibc_config.h && \
4570 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4571 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4572 gcc_cv_libc_provides_ssp=yes
4577 # Avoid complicated tests (see
4578 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4579 # simply assert that glibc does provide this, which is true for all
4580 # realistically usable GNU/Hurd configurations.
4581 gcc_cv_libc_provides_ssp=yes;;
4582 *-*-darwin* | *-*-freebsd*)
4583 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4584 [echo "no __stack_chk_fail on this target"])
4586 *) gcc_cv_libc_provides_ssp=no ;;
4589 if test x$gcc_cv_libc_provides_ssp = xyes; then
4590 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4591 [Define if your target C library provides stack protector support])
4594 # Test for <sys/sdt.h> on the target.
4595 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4596 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4598 if test -f $target_header_dir/sys/sdt.h; then
4600 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4601 [Define if your target C library provides sys/sdt.h])
4603 AC_MSG_RESULT($have_sys_sdt_h)
4605 # Check if TFmode long double should be used by default or not.
4606 # Some glibc targets used DFmode long double, but with glibc 2.4
4607 # and later they can use TFmode.
4609 powerpc*-*-linux* | \
4613 AC_ARG_WITH(long-double-128,
4614 [AS_HELP_STRING([--with-long-double-128],
4615 [use 128-bit long double by default])],
4616 gcc_cv_target_ldbl128="$with_long_double_128",
4617 [[gcc_cv_target_ldbl128=no
4618 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4619 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4620 && gcc_cv_target_ldbl128=yes
4624 if test x$gcc_cv_target_ldbl128 = xyes; then
4625 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4626 [Define if TFmode long double should be the default])
4629 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4630 gcc_cv_target_dl_iterate_phdr=unknown
4633 # <link.h> needs both a dl_iterate_phdr declaration and support for
4634 # compilation with largefile support.
4635 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4636 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4637 gcc_cv_target_dl_iterate_phdr=yes
4639 gcc_cv_target_dl_iterate_phdr=no
4643 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4644 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4645 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4646 [Define if your target C library provides the `dl_iterate_phdr' function.])
4648 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4650 # Find out what GC implementation we want, or may, use.
4652 [AS_HELP_STRING([--with-gc={page,zone}],
4653 [choose the garbage collection mechanism to use
4654 with the compiler])],
4661 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4664 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4669 echo "Using $GGC for garbage collection."
4671 # Libraries to use on the host. This will normally be set by the top
4672 # level Makefile. Here we simply capture the value for our Makefile.
4673 if test -z "${HOST_LIBS+set}"; then
4678 # Use the system's zlib library.
4680 zlibinc="-I\$(srcdir)/../zlib"
4681 AC_ARG_WITH(system-zlib,
4682 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4689 dnl Very limited version of automake's enable-maintainer-mode
4691 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4692 dnl maintainer-mode is disabled by default
4693 AC_ARG_ENABLE(maintainer-mode,
4694 [AS_HELP_STRING([--enable-maintainer-mode],
4695 [enable make rules and dependencies not useful
4696 (and sometimes confusing) to the casual installer])],
4697 maintainer_mode=$enableval,
4700 AC_MSG_RESULT($maintainer_mode)
4702 if test "$maintainer_mode" = "yes"; then
4713 # Make empty files to contain the specs and options for each language.
4714 # Then add #include lines to for a compiler that has specs and/or options.
4720 # These (without "all_") are set in each config-lang.in.
4721 # `language' must be a single word so is spelled singularly.
4724 all_outputs='Makefile'
4725 # List of language makefile fragments.
4727 # Additional files for gengtype
4728 all_gtfiles="$target_gtfiles"
4730 # These are the languages that are set in --enable-languages,
4731 # and are available in the GCC tree.
4732 all_selected_languages=
4734 # Add the language fragments.
4735 # Languages are added via two mechanisms. Some information must be
4736 # recorded in makefile variables, these are defined in config-lang.in.
4737 # We accumulate them and plug them into the main Makefile.
4738 # The other mechanism is a set of hooks for each of the main targets
4739 # like `clean', `install', etc.
4741 language_hooks="Make-hooks"
4743 for lang in ${srcdir}/*/config-lang.in
4746 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4748 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4749 if test "x$lang_alias" = x
4751 echo "$lang doesn't set \$language." 1>&2
4754 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4755 subdirs="$subdirs $subdir"
4757 # $gcc_subdir is where the gcc integration files are to be found
4758 # for a language, both for internal compiler purposes (compiler
4759 # sources implementing front-end to GCC tree converters), and for
4760 # build infrastructure purposes (Make-lang.in, etc.)
4762 # This will be <subdir> (relative to $srcdir) if a line like
4763 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4764 # is found in <langdir>/config-lang.in, and will remain <langdir>
4767 # Except for the language alias (fetched above), the regular
4768 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4769 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4770 # only this and the language alias.
4772 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4773 if [ "$gcc_subdir" = "" ]; then
4774 gcc_subdir="$subdir"
4777 case ",$enable_languages," in
4779 all_selected_languages="$all_selected_languages $lang_alias"
4780 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4781 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4793 . ${srcdir}/$gcc_subdir/config-lang.in
4794 if test "x$language" = x
4796 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4801 case ",$enable_languages," in
4804 for i in $subdir_requires; do
4805 test -f "${srcdir}/$i/config-lang.in" && continue
4813 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4814 if test -f $srcdir/$gcc_subdir/lang.opt; then
4815 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4816 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4818 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4819 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4821 all_languages="$all_languages $language"
4822 all_compilers="$all_compilers $compilers"
4823 all_outputs="$all_outputs $outputs"
4824 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4825 case ",$enable_languages," in
4827 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4829 AC_SUBST(enable_lto)
4835 # Pick up gtfiles for c
4837 . ${srcdir}/c-config-lang.in
4838 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4841 for language in $all_selected_languages
4843 check_languages="$check_languages check-$language"
4846 # We link each language in with a set of hooks, reached indirectly via
4847 # lang.${target}. Only do so for selected languages.
4851 target_list="all.cross start.encap rest.encap tags \
4852 install-common install-man install-info install-pdf install-html dvi \
4853 pdf html uninstall info man srcextra srcman srcinfo \
4854 mostlyclean clean distclean maintainer-clean install-plugin"
4856 for t in $target_list
4859 for lang in $all_selected_languages
4863 echo "lang.$t: $x" >> Make-hooks
4867 # Option include files
4870 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4871 option_includes="option-includes.mk"
4872 AC_SUBST_FILE(option_includes)
4880 echo "dir ." > .gdbinit
4881 echo "dir ${srcdir}" >> .gdbinit
4882 if test x$gdb_needs_out_file_path = xyes
4884 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4886 if test "x$subdirs" != x; then
4889 echo "dir ${srcdir}/$s" >> .gdbinit
4892 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4894 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4895 AC_SUBST(gcc_tooldir)
4898 # Find a directory in which to install a shared libgcc.
4900 AC_ARG_ENABLE(version-specific-runtime-libs,
4901 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4902 [specify that runtime libraries should be
4903 installed in a compiler-specific directory])])
4905 # Substitute configuration variables
4908 AC_SUBST(all_compilers)
4909 AC_SUBST(all_gtfiles)
4910 AC_SUBST(all_lang_makefrags)
4911 AC_SUBST(all_languages)
4912 AC_SUBST(all_selected_languages)
4913 AC_SUBST(build_exeext)
4914 AC_SUBST(build_install_headers_dir)
4915 AC_SUBST(build_xm_file_list)
4916 AC_SUBST(build_xm_include_list)
4917 AC_SUBST(build_xm_defines)
4918 AC_SUBST(build_file_translate)
4919 AC_SUBST(check_languages)
4920 AC_SUBST(cpp_install_dir)
4921 AC_SUBST(xmake_file)
4922 AC_SUBST(tmake_file)
4923 AC_SUBST(TM_ENDIAN_CONFIG)
4924 AC_SUBST(TM_MULTILIB_CONFIG)
4925 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4926 AC_SUBST(extra_gcc_objs)
4927 AC_SUBST(user_headers_inc_next_pre)
4928 AC_SUBST(user_headers_inc_next_post)
4929 AC_SUBST(extra_headers_list)
4930 AC_SUBST(extra_objs)
4931 AC_SUBST(extra_passes)
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(host_exeext)
4937 AC_SUBST(host_xm_file_list)
4938 AC_SUBST(host_xm_include_list)
4939 AC_SUBST(host_xm_defines)
4940 AC_SUBST(out_host_hook_obj)
4942 AC_SUBST(lang_opt_files)
4943 AC_SUBST(lang_specs_files)
4944 AC_SUBST(lang_tree_files)
4945 AC_SUBST(local_prefix)
4947 AC_SUBST(objc_boehm_gc)
4949 AC_SUBST(out_object_file)
4950 AC_SUBST(common_out_file)
4951 AC_SUBST(common_out_object_file)
4952 AC_SUBST(tm_file_list)
4953 AC_SUBST(tm_include_list)
4954 AC_SUBST(tm_defines)
4955 AC_SUBST(tm_p_file_list)
4956 AC_SUBST(tm_p_include_list)
4957 AC_SUBST(xm_file_list)
4958 AC_SUBST(xm_include_list)
4959 AC_SUBST(xm_defines)
4960 AC_SUBST(use_gcc_stdint)
4961 AC_SUBST(c_target_objs)
4962 AC_SUBST(cxx_target_objs)
4963 AC_SUBST(fortran_target_objs)
4964 AC_SUBST(target_cpu_default)
4966 AC_SUBST_FILE(language_hooks)
4969 if test x${build} = x${host} ; then
4970 if test x${host} = x${target} ; then
4971 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4973 echo "Links are now set up to build a cross-compiler" 1>&2
4974 echo " from ${host} to ${target}." 1>&2
4977 if test x${host} = x${target} ; then
4978 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4979 echo " for ${target}." 1>&2
4981 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4982 echo " from ${host} to ${target}." 1>&2
4986 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4987 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4989 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4990 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4992 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4993 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4994 if test "x${CLOOGLIBS}" != "x" ; then
4995 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4998 # Check for plugin support
4999 AC_ARG_ENABLE(plugin,
5000 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5001 enable_plugin=$enableval,
5002 enable_plugin=yes; default_plugin=yes)
5008 if test x$build = x$host; then
5009 export_sym_check="nm${exeext} -g"
5010 elif test x$host = x$target; then
5011 export_sym_check="$gcc_cv_nm -g"
5017 if test x$build = x$host; then
5018 export_sym_check="objdump${exeext} -T"
5019 elif test x$host = x$target; then
5020 export_sym_check="$gcc_cv_objdump -T"
5027 if test x"$enable_plugin" = x"yes"; then
5029 AC_MSG_CHECKING([for exported symbols])
5030 if test "x$export_sym_check" != x; then
5031 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5032 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5033 if $export_sym_check conftest | grep foobar > /dev/null; then
5034 : # No need to use a flag
5035 AC_MSG_RESULT([yes])
5037 AC_MSG_RESULT([yes])
5038 AC_MSG_CHECKING([for -rdynamic])
5039 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5040 if $export_sym_check conftest | grep foobar > /dev/null; then
5042 pluginlibs="-rdynamic"
5047 AC_MSG_RESULT([$plugin_rdynamic])
5050 AC_MSG_RESULT([unable to check])
5055 AC_SEARCH_LIBS([dlopen], [dl])
5056 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5057 pluginlibs="$pluginlibs -ldl"
5061 # Check that we can build shared objects with -fPIC -shared
5062 saved_LDFLAGS="$LDFLAGS"
5063 saved_CFLAGS="$CFLAGS"
5066 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5067 CFLAGS="$CFLAGS -fPIC"
5068 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5071 CFLAGS="$CFLAGS -fPIC"
5072 LDFLAGS="$LDFLAGS -fPIC -shared"
5075 AC_MSG_CHECKING([for -fPIC -shared])
5077 [extern int X;],[return X == 0;],
5078 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5079 [AC_MSG_RESULT([no]); have_pic_shared=no])
5080 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5084 LDFLAGS="$saved_LDFLAGS"
5085 CFLAGS="$saved_CFLAGS"
5087 # If plugin support had been requested but not available, fail.
5088 if test x"$enable_plugin" = x"no" ; then
5089 if test x"$default_plugin" != x"yes"; then
5091 Building GCC with plugin support requires a host that supports
5092 -fPIC, -shared, -ldl and -rdynamic.])
5097 AC_SUBST(pluginlibs)
5098 AC_SUBST(enable_plugin)
5099 if test x"$enable_plugin" = x"yes"; then
5100 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5104 AC_ARG_ENABLE(libquadmath-support,
5105 [AS_HELP_STRING([--disable-libquadmath-support],
5106 [disable libquadmath support for Fortran])],
5107 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5108 ENABLE_LIBQUADMATH_SUPPORT=yes)
5109 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5110 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5111 [Define to 1 to enable libquadmath support])
5115 # Specify what hash style to use by default.
5116 AC_ARG_WITH([linker-hash-style],
5117 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5118 [specify the linker hash style])],
5119 [case x"$withval" in
5121 LINKER_HASH_STYLE=sysv
5124 LINKER_HASH_STYLE=gnu
5127 LINKER_HASH_STYLE=both
5130 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5133 [LINKER_HASH_STYLE=''])
5134 if test x"${LINKER_HASH_STYLE}" != x; then
5135 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5136 [The linker hash style])
5139 # Configure the subdirectories
5140 # AC_CONFIG_SUBDIRS($subdirs)
5142 # Create the Makefile
5143 # and configure language subdirectories
5144 AC_CONFIG_FILES($all_outputs)
5146 AC_CONFIG_COMMANDS([default],
5148 case ${CONFIG_HEADERS} in
5149 *auto-host.h:config.in*)
5152 # Make sure all the subdirs exist.
5153 for d in $subdirs doc build common c-family
5155 test -d $d || mkdir $d
5158 [subdirs='$subdirs'])