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 # Disable exceptions and RTTI if building with g++
362 ACX_PROG_CC_WARNING_OPTS(
363 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
365 # Enable expensive internal checks
367 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
371 AC_ARG_ENABLE(checking,
372 [AS_HELP_STRING([[--enable-checking[=LIST]]],
373 [enable expensive run-time checks. With LIST,
374 enable only specific categories of checks.
375 Categories are: yes,no,all,none,release.
376 Flags are: assert,df,fold,gc,gcac,gimple,misc,
377 rtlflag,rtl,runtime,tree,valgrind,types])],
378 [ac_checking_flags="${enableval}"],[
379 # Determine the default checks.
380 if test x$is_release = x ; then
381 ac_checking_flags=yes
383 ac_checking_flags=release
385 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
386 for check in release $ac_checking_flags
389 # these set all the flags to specific states
390 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
391 ac_fold_checking= ; ac_gc_checking=1 ;
392 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking= ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
403 ac_fold_checking=1 ; ac_gc_checking=1 ;
404 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
405 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
406 ac_tree_checking=1 ; ac_valgrind_checking= ;
407 ac_types_checking=1 ;;
408 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
409 ac_fold_checking= ; ac_gc_checking= ;
410 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
411 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
412 ac_tree_checking= ; ac_valgrind_checking= ;
413 ac_types_checking= ;;
414 # these enable particular checks
415 assert) ac_assert_checking=1 ;;
416 df) ac_df_checking=1 ;;
417 fold) ac_fold_checking=1 ;;
418 gc) ac_gc_checking=1 ;;
419 gcac) ac_gc_always_collect=1 ;;
420 gimple) ac_gimple_checking=1 ;;
421 misc) ac_checking=1 ;;
422 rtl) ac_rtl_checking=1 ;;
423 rtlflag) ac_rtlflag_checking=1 ;;
424 runtime) ac_runtime_checking=1 ;;
425 tree) ac_tree_checking=1 ;;
426 types) ac_types_checking=1 ;;
427 valgrind) ac_valgrind_checking=1 ;;
428 *) AC_MSG_ERROR(unknown check category $check) ;;
434 if test x$ac_checking != x ; then
435 AC_DEFINE(ENABLE_CHECKING, 1,
436 [Define if you want more run-time sanity checks. This one gets a grab
437 bag of miscellaneous but relatively cheap checks.])
438 nocommon_flag=-fno-common
440 AC_SUBST(nocommon_flag)
441 if test x$ac_df_checking != x ; then
442 AC_DEFINE(ENABLE_DF_CHECKING, 1,
443 [Define if you want more run-time sanity checks for dataflow.])
445 if test x$ac_assert_checking != x ; then
446 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
447 [Define if you want assertions enabled. This is a cheap check.])
449 if test x$ac_gimple_checking != x ; then
450 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
451 [Define if you want operations on GIMPLE (the basic data structure of
452 the high-level optimizers) to be checked for dynamic type safety at
453 runtime. This is moderately expensive.])
455 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
456 if test x$ac_runtime_checking != x ; then
457 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
458 [Define if you want runtime assertions enabled. This is a cheap check.])
460 if test x$ac_tree_checking != x ; then
461 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
462 [Define if you want all operations on trees (the basic data
463 structure of the front ends) to be checked for dynamic type safety
464 at runtime. This is moderately expensive. The tree browser debugging
465 routines will also be enabled by this option.
467 TREEBROWSER=tree-browser.o
469 if test x$ac_types_checking != x ; then
470 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
471 [Define if you want all gimple types to be verified after gimplifiation.
475 AC_SUBST(TREEBROWSER)
476 if test x$ac_rtl_checking != x ; then
477 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
478 [Define if you want all operations on RTL (the basic data structure
479 of the optimizer and back end) to be checked for dynamic type safety
480 at runtime. This is quite expensive.])
482 if test x$ac_rtlflag_checking != x ; then
483 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
484 [Define if you want RTL flag accesses to be checked against the RTL
485 codes that are supported for each access macro. This is relatively
488 if test x$ac_gc_checking != x ; then
489 AC_DEFINE(ENABLE_GC_CHECKING, 1,
490 [Define if you want the garbage collector to do object poisoning and
491 other memory allocation checks. This is quite expensive.])
493 if test x$ac_gc_always_collect != x ; then
494 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
495 [Define if you want the garbage collector to operate in maximally
496 paranoid mode, validating the entire heap and collecting garbage at
497 every opportunity. This is extremely expensive.])
499 if test x$ac_fold_checking != x ; then
500 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
501 [Define if you want fold checked that it never destructs its argument.
502 This is quite expensive.])
504 valgrind_path_defines=
507 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
508 dnl # an if statement. This was the source of very frustrating bugs
509 dnl # in converting to autoconf 2.5x!
510 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
512 if test x$ac_valgrind_checking != x ; then
513 # It is certainly possible that there's valgrind but no valgrind.h.
514 # GCC relies on making annotations so we must have both.
515 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
516 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
517 [[#include <valgrind/memcheck.h>
518 #ifndef VALGRIND_DISCARD
519 #error VALGRIND_DISCARD not defined
521 [gcc_cv_header_valgrind_memcheck_h=yes],
522 [gcc_cv_header_valgrind_memcheck_h=no])
523 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
524 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
525 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
526 [[#include <memcheck.h>
527 #ifndef VALGRIND_DISCARD
528 #error VALGRIND_DISCARD not defined
530 [gcc_cv_header_memcheck_h=yes],
531 [gcc_cv_header_memcheck_h=no])
532 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
533 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
534 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
535 if test "x$valgrind_path" = "x" \
536 || (test $have_valgrind_h = no \
537 && test $gcc_cv_header_memcheck_h = no \
538 && test $gcc_cv_header_valgrind_memcheck_h = no); then
539 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
541 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
542 valgrind_command="$valgrind_path -q"
543 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
544 [Define if you want to run subprograms and generated programs
545 through valgrind (a memory checker). This is extremely expensive.])
546 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
547 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
548 [Define if valgrind's valgrind/memcheck.h header is installed.])
550 if test $gcc_cv_header_memcheck_h = yes; then
551 AC_DEFINE(HAVE_MEMCHECK_H, 1,
552 [Define if valgrind's memcheck.h header is installed.])
555 AC_SUBST(valgrind_path_defines)
556 AC_SUBST(valgrind_command)
558 # Enable code coverage collection
559 AC_ARG_ENABLE(coverage,
560 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
561 [enable compiler's code coverage collection.
562 Use to measure compiler performance and locate
563 unused parts of the compiler. With LEVEL, specify
564 optimization. Values are opt, noopt,
566 [case "${enableval}" in
568 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
571 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
574 # a.k.a. --disable-coverage
578 AC_MSG_ERROR(unknown coverage setting $enableval)
582 AC_SUBST(coverage_flags)
584 AC_ARG_ENABLE(gather-detailed-mem-stats,
585 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
586 [enable detailed memory allocation stats gathering])], [],
587 [enable_gather_detailed_mem_stats=no])
588 if test x$enable_gather_detailed_mem_stats = xyes ; then
589 AC_DEFINE(GATHER_STATISTICS, 1,
590 [Define to enable detailed memory allocation stats gathering.])
593 # -------------------------------
594 # Miscenalleous configure options
595 # -------------------------------
597 # See if we are building gcc with C++.
598 AC_ARG_ENABLE(build-with-cxx,
599 [AS_HELP_STRING([--enable-build-with-cxx],
600 [build with C++ compiler instead of C compiler])],
601 ENABLE_BUILD_WITH_CXX=$enableval,
602 ENABLE_BUILD_WITH_CXX=no)
603 AC_SUBST(ENABLE_BUILD_WITH_CXX)
604 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
605 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
606 [Define if building with C++.])
611 [AS_HELP_STRING([--with-stabs],
612 [arrange to use stabs instead of host debug format])],
616 # Determine whether or not multilibs are enabled.
617 AC_ARG_ENABLE(multilib,
618 [AS_HELP_STRING([--enable-multilib],
619 [enable library support for multiple ABIs])],
620 [], [enable_multilib=yes])
621 AC_SUBST(enable_multilib)
623 # Enable __cxa_atexit for C++.
624 AC_ARG_ENABLE(__cxa_atexit,
625 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
628 # Enable C extension for decimal float if target supports it.
629 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
631 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
632 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
633 [Define to 1 to enable decimal float extension to C.])
635 # Use default_decimal_float for dependency.
636 enable_decimal_float=$default_decimal_float
638 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
639 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
640 [Define to 1 to specify that we are using the BID decimal floating
641 point format instead of DPD])
643 # Enable C extension for fixed-point arithmetic.
644 AC_ARG_ENABLE(fixed-point,
645 [AS_HELP_STRING([--enable-fixed-point],
646 [enable fixed-point arithmetic extension to C])],
651 enable_fixed_point=yes
657 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
658 enable_fixed_point=no
661 enable_fixed_point=yes
666 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
667 enable_fixed_point=no
671 AC_SUBST(enable_fixed_point)
673 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
674 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
675 [Define to 1 to enable fixed-point arithmetic extension to C.])
678 # Pass with no value to take the default
679 # Pass with a value to specify a thread package
680 AC_ARG_ENABLE(threads,
681 [AS_HELP_STRING([[--enable-threads[=LIB]]],
682 [enable thread usage for target GCC,
683 using LIB thread package])],,
687 [AS_HELP_STRING([--enable-tls],
688 [enable or disable generation of tls code
689 overriding the assembler check for tls support])],
693 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
694 Valid choices are 'yes' and 'no'.]) ;;
698 AC_ARG_ENABLE(objc-gc,
699 [AS_HELP_STRING([--enable-objc-gc],
700 [enable the use of Boehm's garbage collector with
701 the GNU Objective-C runtime])],
702 if test x$enable_objc_gc = xno; then
710 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
711 dwarf2="$with_dwarf2",
714 AC_ARG_ENABLE(shared,
715 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
717 case $enable_shared in
721 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
722 for pkg in $enableval; do
723 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
730 ], [enable_shared=yes])
731 AC_SUBST(enable_shared)
733 AC_ARG_WITH([native-system-header-dir],
734 [ --with-native-system-header-dir=dir
735 use dir as the directory to look for standard
736 system header files in. Defaults to /usr/include.],
738 case ${with_native_system_header_dir} in
739 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
740 /* | [[A-Za-z]]:[[\\/]]*) ;;
741 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
743 configured_native_system_header_dir="${withval}"
744 ], [configured_native_system_header_dir=])
746 AC_ARG_WITH(build-sysroot,
747 [AS_HELP_STRING([--with-build-sysroot=sysroot],
748 [use sysroot as the system root during the build])],
749 [if test x"$withval" != x ; then
750 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
752 [SYSROOT_CFLAGS_FOR_TARGET=])
753 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
756 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
757 [search for usr/lib, usr/include, et al, within DIR])],
759 case ${with_sysroot} in
760 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
761 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
764 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
765 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
767 if test "x$prefix" = xNONE; then
768 test_prefix=/usr/local
772 if test "x$exec_prefix" = xNONE; then
773 test_exec_prefix=$test_prefix
775 test_exec_prefix=$exec_prefix
777 case ${TARGET_SYSTEM_ROOT} in
778 "${test_prefix}"|"${test_prefix}/"*|\
779 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
780 '${prefix}'|'${prefix}/'*|\
781 '${exec_prefix}'|'${exec_prefix}/'*)
782 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
783 TARGET_SYSTEM_ROOT_DEFINE="$t"
788 TARGET_SYSTEM_ROOT_DEFINE=
789 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
791 AC_SUBST(TARGET_SYSTEM_ROOT)
792 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
793 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
796 [AS_HELP_STRING([--with-specs=SPECS],
797 [add SPECS to driver command-line processing])],
798 [CONFIGURE_SPECS=$withval],
801 AC_SUBST(CONFIGURE_SPECS)
803 ACX_PKGVERSION([GCC])
804 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
806 # Sanity check enable_languages in case someone does not run the toplevel
807 # configure # script.
808 AC_ARG_ENABLE(languages,
809 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
810 [case ,${enable_languages}, in
812 # go safe -- we cannot be much sure without the toplevel
814 # analysis of which target libs are present and usable
818 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
823 enable_languages=c,${enable_languages}
826 [enable_languages=c])
828 AC_ARG_WITH(multilib-list,
829 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
831 with_multilib_list=default)
833 # -------------------------
834 # Checks for other programs
835 # -------------------------
839 # Find some useful tools
841 # We need awk to create options.c and options.h.
842 # Bail out if it's missing.
844 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
852 # By default, the Darwin ranlib will not treat common symbols as
853 # definitions when building the archive table of contents. Other
854 # ranlibs do that; pass an option to the Darwin ranlib that makes
855 # it behave similarly.
861 AC_SUBST(ranlib_flags)
865 # See if cmp has --ignore-initial.
866 gcc_AC_PROG_CMP_IGNORE_INITIAL
868 # See if we have the mktemp command.
869 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
871 # See if makeinfo has been installed and is modern enough
872 # that we can use it.
873 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
874 [GNU texinfo.* \([0-9][0-9.]*\)],
875 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
876 if test $gcc_cv_prog_makeinfo_modern = no; then
878 *** Makeinfo is missing or too old.
879 *** Info documentation will not be built.])
886 # Is pod2man recent enough to regenerate manpages?
887 AC_MSG_CHECKING([for recent Pod::Man])
888 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
890 GENERATED_MANPAGES=generated-manpages
895 AC_SUBST(GENERATED_MANPAGES)
897 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
900 dnl Don't use AC_PROG_LEX; we insist on flex.
901 dnl LEXLIB is not useful in gcc.
902 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
905 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
907 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
908 # check for build == host before using them.
911 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
912 && test -d ../binutils ; then
913 NM='${objdir}/../binutils/nm-new'
915 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
919 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
920 && test -d ../binutils ; then
921 AR='${objdir}/../binutils/ar'
923 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
927 # --------------------
928 # Checks for C headers
929 # --------------------
931 # Need to reject headers which give warnings, so that the -Werror bootstrap
932 # works later. *sigh* This needs to come before all header checks.
939 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
940 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
941 sys/resource.h sys/param.h sys/times.h sys/stat.h \
942 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
944 # Check for thread headers.
945 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
946 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
948 # These tests can't be done till we know if we have limits.h.
952 # ----------------------
953 # Checks for C++ headers
954 # ----------------------
956 dnl Autoconf will give an error in the configure script if there is no
957 dnl C++ preprocessor. Hack to prevent that.
958 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
960 m4_popdef([AC_MSG_ERROR])[]dnl
964 AC_CHECK_HEADERS(unordered_map)
965 AC_CHECK_HEADERS(tr1/unordered_map)
966 AC_CHECK_HEADERS(ext/hash_map)
975 # These libraries may be used by collect2.
976 # We may need a special search path to get them linked.
977 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
979 for libs in '' -lld -lmld \
980 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
981 '-L/usr/lib/cmplrs/cc3.11 -lmld'
984 AC_TRY_LINK_FUNC(ldopen,
985 [gcc_cv_collect2_libs="$libs"; break])
988 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
989 case $gcc_cv_collect2_libs in
991 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
993 AC_SUBST(COLLECT2_LIBS)
995 # When building Ada code on Alpha, we need exc_resume which is usually in
996 # -lexc. So test for it.
999 AC_SEARCH_LIBS(exc_resume, exc)
1002 AC_SUBST(GNAT_LIBEXC)
1004 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1007 AC_SEARCH_LIBS(kstat_open, kstat)
1008 EXTRA_GCC_LIBS="$LIBS"
1010 AC_SUBST(EXTRA_GCC_LIBS)
1012 # Some systems put ldexp and frexp in libm instead of libc; assume
1013 # they're both in the same place. jcf-dump needs them.
1016 AC_SEARCH_LIBS(ldexp, m)
1021 # Use <inttypes.h> only if it exists,
1022 # doesn't clash with <sys/types.h>, and declares intmax_t.
1023 AC_MSG_CHECKING(for inttypes.h)
1024 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1025 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1026 [[#include <sys/types.h>
1027 #include <inttypes.h>]],
1028 [[intmax_t i = -1;]])],
1029 [gcc_cv_header_inttypes_h=yes],
1030 [gcc_cv_header_inttypes_h=no])])
1031 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1032 if test $gcc_cv_header_inttypes_h = yes; then
1033 AC_DEFINE(HAVE_INTTYPES_H, 1,
1034 [Define if you have a working <inttypes.h> header file.])
1037 dnl Disabled until we have a complete test for buggy enum bitfields.
1038 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1040 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1041 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1042 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1043 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1044 putchar_unlocked putc_unlocked)
1045 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1046 sysconf strsignal getrusage nl_langinfo \
1047 gettimeofday mbstowcs wcswidth mmap setlocale \
1048 gcc_UNLOCKED_FUNCS madvise)
1050 if test x$ac_cv_func_mbstowcs = xyes; then
1051 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1052 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1058 [gcc_cv_func_mbstowcs_works=yes],
1059 [gcc_cv_func_mbstowcs_works=no],
1060 [gcc_cv_func_mbstowcs_works=yes])])
1061 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1062 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1063 [Define this macro if mbstowcs does not crash when its
1064 first argument is NULL.])
1068 AC_CHECK_TYPE(ssize_t, int)
1069 AC_CHECK_TYPE(caddr_t, char *)
1071 gcc_AC_FUNC_MMAP_BLACKLIST
1075 # Under VMS, vfork works very differently than on Unix. The standard test
1076 # won't work, and it isn't easily adaptable. It makes more sense to
1078 ac_cv_func_vfork_works=yes
1083 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1084 # iconv() prototype.
1085 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1086 [AC_LANG_PUSH([C++])
1088 AC_LANG_POP([C++])],
1091 # Until we have in-tree GNU iconv:
1093 AC_SUBST(LIBICONV_DEP)
1099 # We will need to find libiberty.h and ansidecl.h
1100 saved_CFLAGS="$CFLAGS"
1101 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1102 saved_CXXFLAGS="$CXXFLAGS"
1103 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1104 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1105 strsignal strstr strverscmp \
1106 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1107 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1108 #include "ansidecl.h"
1109 #include "system.h"])
1111 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1112 #include "ansidecl.h"
1114 #ifdef HAVE_SYS_RESOURCE_H
1115 #include <sys/resource.h>
1119 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1120 #include "ansidecl.h"
1122 #ifdef HAVE_SYS_RESOURCE_H
1123 #include <sys/resource.h>
1125 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1126 [Define to `long' if <sys/resource.h> doesn't define.])])
1128 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1129 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1130 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1131 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1132 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1133 #include "ansidecl.h"
1142 gcc_AC_CHECK_DECLS(times, , ,[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_TIMES_H
1146 #include <sys/times.h>
1150 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1151 #include "ansidecl.h"
1156 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1158 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1159 [AC_LANG_PUSH([C++])
1160 gcc_AC_CHECK_DECLS(madvise, , ,[
1161 #include "ansidecl.h"
1164 AC_LANG_POP([C++])],
1165 [gcc_AC_CHECK_DECLS(madvise, , ,[
1166 #include "ansidecl.h"
1171 # More time-related stuff.
1172 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1173 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1174 #include "ansidecl.h"
1176 #ifdef HAVE_SYS_TIMES_H
1177 #include <sys/times.h>
1179 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1180 if test $ac_cv_struct_tms = yes; then
1181 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1182 [Define if <sys/times.h> defines struct tms.])
1185 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1186 # revisit after autoconf 2.50.
1187 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1188 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1189 #include "ansidecl.h"
1191 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1192 if test $gcc_cv_type_clock_t = yes; then
1193 AC_DEFINE(HAVE_CLOCK_T, 1,
1194 [Define if <time.h> defines clock_t.])
1197 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1198 CFLAGS="$saved_CFLAGS"
1199 CXXFLAGS="$saved_CXXFLAGS"
1201 gcc_AC_INITFINI_ARRAY
1203 # mkdir takes a single argument on some systems.
1204 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1212 # With Setjmp/Longjmp based exception handling.
1213 AC_ARG_ENABLE(sjlj-exceptions,
1214 [AS_HELP_STRING([--enable-sjlj-exceptions],
1215 [arrange to use setjmp/longjmp exception handling])],
1218 if test $enableval != yes; then
1219 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1224 force_sjlj_exceptions=yes],
1227 force_sjlj_exceptions=yes
1231 force_sjlj_exceptions=no
1234 if test $force_sjlj_exceptions = yes; then
1235 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1236 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1237 [Define 0/1 to force the choice for exception handling model.])
1240 # --------------------------------------------------------
1241 # Build, host, and target specific configuration fragments
1242 # --------------------------------------------------------
1244 # Collect build-machine-specific information.
1245 . ${srcdir}/config.build
1247 # Collect host-machine-specific information.
1248 . ${srcdir}/config.host
1252 # Collect target-machine-specific information.
1253 . ${srcdir}/config.gcc
1255 extra_objs="${host_extra_objs} ${extra_objs}"
1256 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1258 # Default the target-machine variables that were not explicitly set.
1259 if test x"$tm_file" = x
1260 then tm_file=$cpu_type/$cpu_type.h; fi
1262 if test x"$extra_headers" = x
1263 then extra_headers=; fi
1265 if test x$md_file = x
1266 then md_file=$cpu_type/$cpu_type.md; fi
1268 if test x$out_file = x
1269 then out_file=$cpu_type/$cpu_type.c; fi
1271 if test x"$tmake_file" = x
1272 then tmake_file=$cpu_type/t-$cpu_type
1275 if test x"$dwarf2" = xyes
1276 then tm_file="$tm_file tm-dwarf2.h"
1279 # Say what files are being used for the output code and MD file.
1280 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1281 echo "Using \`$srcdir/config/$md_file' as machine description file."
1283 # If any of the xm_file variables contain nonexistent files, warn
1284 # about them and drop them.
1287 for x in $build_xm_file; do
1288 if test -f $srcdir/config/$x
1290 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1296 for x in $host_xm_file; do
1297 if test -f $srcdir/config/$x
1299 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1305 for x in $xm_file; do
1306 if test -f $srcdir/config/$x
1308 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1314 for f in $tm_file; do
1317 if test $count = ax; then
1318 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1320 echo "Using the following target machine macro files:"
1321 for f in $tm_file; do
1322 echo " $srcdir/config/$f"
1326 if test x$need_64bit_hwint = xyes; then
1327 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1328 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1331 if test x$use_long_long_for_widest_fast_int = xyes; then
1332 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1333 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1334 efficiently supported by the host hardware.])
1338 for f in $host_xm_file; do
1341 if test $count = a; then
1343 elif test $count = ax; then
1344 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1346 echo "Using the following host machine macro files:"
1347 for f in $host_xm_file; do
1348 echo " $srcdir/config/$f"
1351 echo "Using ${out_host_hook_obj} for host machine hooks."
1353 if test "$host_xm_file" != "$build_xm_file"; then
1355 for f in $build_xm_file; do
1358 if test $count = a; then
1360 elif test $count = ax; then
1361 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1363 echo "Using the following build machine macro files:"
1364 for f in $build_xm_file; do
1365 echo " $srcdir/config/$f"
1370 if test -n "$configured_native_system_header_dir"; then
1371 native_system_header_dir=$configured_native_system_header_dir
1373 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1374 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1378 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1379 gcc_cv_mcontext_underscores,
1381 #include <sys/cdefs.h>
1382 #include <sys/signal.h>
1383 #include <ucontext.h>
1384 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1386 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1387 if test $gcc_cv_mcontext_underscores = yes; then
1388 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1389 [mcontext_t fields start with __])
1398 # Check if a valid thread package
1399 case ${enable_threads} in
1402 target_thread_file='single'
1406 target_thread_file='single'
1408 aix | dce | lynx | mipssde | posix | rtems | \
1409 single | tpf | vxworks | win32)
1410 target_thread_file=${enable_threads}
1413 echo "${enable_threads} is an unknown thread package" 1>&2
1418 if test x${thread_file} = x; then
1419 # No thread file set by target-specific clauses in config.gcc,
1420 # so use file chosen by default logic above
1421 thread_file=${target_thread_file}
1429 if test x$enable___cxa_atexit = xyes || \
1430 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1431 if test x$host = x$target; then
1433 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1434 # keyed to flag_use_cxa_atexit
1439 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1440 [echo "__cxa_atexit can't be enabled on this target"])
1444 # We can't check for __cxa_atexit when building a cross, so assume
1448 if test x$use_cxa_atexit = xyes; then
1449 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1450 [Define if you want to use __cxa_atexit, rather than atexit, to
1451 register C++ destructors for local statics and global objects.
1452 This is essential for fully standards-compliant handling of
1453 destructors, but requires __cxa_atexit in libc.])
1457 # Look for a file containing extra machine modes.
1458 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1459 extra_modes_file='$(srcdir)'/config/${extra_modes}
1460 AC_SUBST(extra_modes_file)
1461 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1462 [Define to the name of a file containing a list of extra machine modes
1463 for this architecture.])
1466 # Convert extra_options into a form suitable for Makefile use.
1469 for f in $extra_options; do
1470 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1471 all_opt_files="$all_opt_files $srcdir/config/$f"
1473 AC_SUBST(extra_opt_files)
1475 # auto-host.h is the file containing items generated by autoconf and is
1476 # the first file included by config.h.
1477 # If host=build, it is correct to have bconfig include auto-host.h
1478 # as well. If host!=build, we are in error and need to do more
1479 # work to find out the build config parameters.
1480 if test x$host = x$build
1482 build_auto=auto-host.h
1484 # We create a subdir, then run autoconf in the subdir.
1485 # To prevent recursion we set host and build for the new
1486 # invocation of configure to the build for this invocation
1493 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1494 *) realsrcdir=../${srcdir};;
1496 saved_CFLAGS="${CFLAGS}"
1497 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1498 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1499 ${realsrcdir}/configure \
1500 --enable-languages=${enable_languages-all} \
1501 --target=$target_alias --host=$build_alias --build=$build_alias
1502 CFLAGS="${saved_CFLAGS}"
1504 # We just finished tests for the build machine, so rename
1505 # the file auto-build.h in the gcc directory.
1506 mv auto-host.h ../auto-build.h
1509 build_auto=auto-build.h
1511 AC_SUBST(build_subdir)
1513 tm_file="${tm_file} defaults.h"
1514 tm_p_file="${tm_p_file} tm-preds.h"
1515 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1516 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1517 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1518 # put this back in temporarily.
1519 xm_file="auto-host.h ansidecl.h ${xm_file}"
1526 # Compile in configure arguments.
1527 if test -f configargs.h ; then
1528 # Being re-configured.
1529 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1530 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1532 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1535 # Double all backslashes and backslash all quotes to turn
1536 # gcc_config_arguments into a C string.
1537 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1538 $gcc_config_arguments
1540 gcc_config_arguments_str=`cat conftest.out`
1543 cat > configargs.h <<EOF
1544 /* Generated automatically. */
1545 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1546 static const char thread_model[] = "$thread_file";
1548 static const struct {
1549 const char *name, *value;
1550 } configure_default_options[] = $configure_default_options;
1555 gcc_BASEVER=`cat $srcdir/BASE-VER`
1556 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1557 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1558 if test -f $srcdir/REVISION ; then
1559 gcc_REVISION=`cat $srcdir/REVISION`
1563 cat > plugin-version.h <<EOF
1564 #include "configargs.h"
1566 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1567 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1568 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1569 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1571 static char basever[] = "$gcc_BASEVER";
1572 static char datestamp[] = "$gcc_DATESTAMP";
1573 static char devphase[] = "$gcc_DEVPHASE";
1574 static char revision[] = "$gcc_REVISION";
1576 /* FIXME plugins: We should make the version information more precise.
1577 One way to do is to add a checksum. */
1579 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1581 configuration_arguments};
1585 # Internationalization
1586 ZW_GNU_GETTEXT_SISTER_DIR
1588 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1589 # -liconv on the link line twice.
1590 case "$LIBINTL" in *$LIBICONV*)
1594 AC_ARG_ENABLE(secureplt,
1595 [AS_HELP_STRING([--enable-secureplt],
1596 [enable -msecure-plt by default for PowerPC])],
1599 AC_ARG_ENABLE(leading-mingw64-underscores,
1600 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1601 [enable leading underscores on 64 bit mingw targets]),
1603 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1604 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1605 [Define if we should use leading underscore on 64 bit mingw targets])])
1608 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1611 AC_ARG_ENABLE(frame-pointer,
1612 [AS_HELP_STRING([--enable-frame-pointer],
1613 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1616 linux* | darwin[[8912]]*)
1617 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1619 enable_frame_pointer=no
1622 enable_frame_pointer=yes
1627 # Windows32 Registry support for specifying GCC installation paths.
1628 AC_ARG_ENABLE(win32-registry,
1629 [AS_HELP_STRING([--disable-win32-registry],
1630 [disable lookup of installation paths in the
1631 Registry on Windows hosts])
1632 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1633 AS_HELP_STRING([--enable-win32-registry=KEY],
1634 [use KEY instead of GCC version as the last portion
1635 of the registry key])],,)
1638 win32 | pe | cygwin* | mingw32* | uwin*)
1639 if test "x$enable_win32_registry" != xno; then
1640 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1643 if test "x$enable_win32_registry" != xno; then
1644 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1645 [Define to 1 if installation paths should be looked up in the Windows
1646 Registry. Ignored on non-Windows hosts.])
1648 if test "x$enable_win32_registry" != xyes \
1649 && test "x$enable_win32_registry" != x; then
1650 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1651 [Define to be the last component of the Windows registry key under which
1652 to look for installation paths. The full key used will be
1653 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1654 The default is the GCC version number.])
1660 # Get an absolute path to the GCC top-level source directory
1661 holddir=`${PWDCMD-pwd}`
1663 topdir=`${PWDCMD-pwd}`
1666 # Conditionalize the makefile for this host machine.
1668 for f in ${host_xmake_file}
1670 if test -f ${srcdir}/config/$f
1672 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1676 # Conditionalize the makefile for this target machine.
1678 for f in ${tmake_file}
1680 if test -f ${srcdir}/config/$f
1682 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1685 tmake_file="${tmake_file_}"
1687 out_object_file=`basename $out_file .c`.o
1688 common_out_object_file=`basename $common_out_file .c`.o
1690 tm_file_list="options.h"
1691 tm_include_list="options.h insn-constants.h"
1692 for f in $tm_file; do
1695 f=`echo $f | sed 's/^..//'`
1696 tm_file_list="${tm_file_list} $f"
1697 tm_include_list="${tm_include_list} $f"
1700 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1701 tm_include_list="${tm_include_list} $f"
1704 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1705 tm_include_list="${tm_include_list} config/$f"
1712 for f in $tm_p_file; do
1715 tm_p_file_list="${tm_p_file_list} $f"
1716 tm_p_include_list="${tm_p_include_list} $f"
1719 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1720 tm_p_include_list="${tm_p_include_list} config/$f"
1726 for f in $xm_file; do
1729 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1730 xm_include_list="${xm_include_list} $f"
1733 xm_file_list="${xm_file_list} $f"
1734 xm_include_list="${xm_include_list} $f"
1737 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1738 xm_include_list="${xm_include_list} config/$f"
1744 host_xm_include_list=
1745 for f in $host_xm_file; do
1748 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1749 host_xm_include_list="${host_xm_include_list} $f"
1752 host_xm_file_list="${host_xm_file_list} $f"
1753 host_xm_include_list="${host_xm_include_list} $f"
1756 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1757 host_xm_include_list="${host_xm_include_list} config/$f"
1763 for f in $build_xm_file; do
1766 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1767 build_xm_include_list="${build_xm_include_list} $f"
1769 auto-build.h | auto-host.h )
1770 build_xm_file_list="${build_xm_file_list} $f"
1771 build_xm_include_list="${build_xm_include_list} $f"
1774 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1775 build_xm_include_list="${build_xm_include_list} config/$f"
1780 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1781 # cross-compiler which does not use the native headers and libraries.
1782 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1783 CROSS= AC_SUBST(CROSS)
1784 ALL=all.internal AC_SUBST(ALL)
1785 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1787 if test "x$with_build_sysroot" != x; then
1788 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1790 # This value is used, even on a native system, because
1791 # CROSS_SYSTEM_HEADER_DIR is just
1792 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1793 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1796 if test x$host != x$target
1798 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1800 SYSTEM_HEADER_DIR=$build_system_header_dir
1801 case "$host","$target" in
1802 # Darwin crosses can use the host system's libraries and headers,
1803 # because of the fat library support. Of course, it must be the
1804 # same version of Darwin on both sides. Allow the user to
1805 # just say --target=foo-darwin without a version number to mean
1806 # "the version on this system".
1807 *-*-darwin*,*-*-darwin*)
1808 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1809 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1810 if test $hostos = $targetos -o $targetos = darwin ; then
1812 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1817 i?86-*-*,x86_64-*-* \
1818 | powerpc*-*-*,powerpc64*-*-*)
1819 CROSS="$CROSS -DNATIVE_CROSS" ;;
1824 if test "x$with_headers" = x; then
1831 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1832 SYSTEM_HEADER_DIR=$build_system_header_dir
1835 # If this is a cross-compiler that does not
1836 # have its own set of headers then define
1839 # If this is using newlib, without having the headers available now,
1840 # then define inhibit_libc in LIBGCC2_CFLAGS.
1841 # This prevents libgcc2 from containing any code which requires libc
1843 : ${inhibit_libc=false}
1844 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1845 test x$with_newlib = xyes ; } &&
1846 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1849 AC_SUBST(inhibit_libc)
1851 # When building gcc with a cross-compiler, we need to adjust things so
1852 # that the generator programs are still built with the native compiler.
1853 # Also, we cannot run fixincludes.
1855 # These are the normal (build=host) settings:
1856 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1857 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1858 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1859 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1861 # And these apply if build != host, or we are generating coverage data
1862 if test x$build != x$host || test "x$coverage_flags" != x
1864 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1865 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1868 # Expand extra_headers to include complete path.
1869 # This substitutes for lots of t-* files.
1871 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1872 for file in ${extra_headers} ; do
1873 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1876 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1877 if test x"$use_gcc_tgmath" = xyes
1878 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1881 # Define collect2 in Makefile.
1882 case $host_can_use_collect2 in
1884 *) collect2='collect2$(exeext)' ;;
1886 AC_SUBST([collect2])
1888 # Add a definition of USE_COLLECT2 if system wants one.
1889 case $use_collect2 in
1890 no) use_collect2= ;;
1893 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1894 xm_defines="${xm_defines} USE_COLLECT2"
1895 case $host_can_use_collect2 in
1897 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1903 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1904 [Define to the name of the LTO plugin DSO that must be
1905 passed to the linker's -plugin=LIB option.])
1907 # ---------------------------
1908 # Assembler & linker features
1909 # ---------------------------
1911 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1912 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1913 # However when ld-new is first executed from the build tree, libtool will
1914 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1915 # to the build tree. While doing this we need to use the previous-stage
1916 # linker, or we have an infinite loop. The presence of a shell script as
1917 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1918 # the gcc/collect-ld script. So we need to know how libtool works, or
1919 # exec-tool will fail.
1921 m4_defun([_LT_CONFIG_COMMANDS], [])
1924 AC_SUBST(enable_fast_install)
1926 # Identify the assembler which will work hand-in-glove with the newly
1927 # built GCC, so that we can examine its features. This is the assembler
1928 # which will be driven by the driver program.
1930 # If build != host, and we aren't building gas in-tree, we identify a
1931 # build->target assembler and hope that it will have the same features
1932 # as the host->target assembler we'll be using.
1933 gcc_cv_gas_major_version=
1934 gcc_cv_gas_minor_version=
1935 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1937 m4_pattern_allow([AS_FOR_TARGET])dnl
1938 AS_VAR_SET_IF(gcc_cv_as,, [
1939 if test -x "$DEFAULT_ASSEMBLER"; then
1940 gcc_cv_as="$DEFAULT_ASSEMBLER"
1941 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1942 && test -f ../gas/Makefile \
1943 && test x$build = x$host; then
1944 gcc_cv_as=../gas/as-new$build_exeext
1945 elif test -x as$build_exeext; then
1946 # Build using assembler in the current directory.
1947 gcc_cv_as=./as$build_exeext
1948 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1949 gcc_cv_as="$AS_FOR_TARGET"
1951 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1954 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1955 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1956 case "$ORIGINAL_AS_FOR_TARGET" in
1957 ./as | ./as$build_exeext) ;;
1958 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1961 AC_MSG_CHECKING(what assembler to use)
1962 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1963 # Single tree build which includes gas. We want to prefer it
1964 # over whatever linker top-level may have detected, since
1965 # we'll use what we're building after installation anyway.
1966 AC_MSG_RESULT(newly built gas)
1968 _gcc_COMPUTE_GAS_VERSION
1969 in_tree_gas_is_elf=no
1970 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1971 || (grep 'obj_format = multi' ../gas/Makefile \
1972 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1974 in_tree_gas_is_elf=yes
1977 AC_MSG_RESULT($gcc_cv_as)
1981 # Identify the linker which will work hand-in-glove with the newly
1982 # built GCC, so that we can examine its features. This is the linker
1983 # which will be driven by the driver program.
1985 # If build != host, and we aren't building gas in-tree, we identify a
1986 # build->target linker and hope that it will have the same features
1987 # as the host->target linker we'll be using.
1988 gcc_cv_gld_major_version=
1989 gcc_cv_gld_minor_version=
1990 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1991 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1993 AS_VAR_SET_IF(gcc_cv_ld,, [
1994 if test -x "$DEFAULT_LINKER"; then
1995 gcc_cv_ld="$DEFAULT_LINKER"
1996 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1997 && test -f ../ld/Makefile \
1998 && test x$build = x$host; then
1999 gcc_cv_ld=../ld/ld-new$build_exeext
2000 elif test -x collect-ld$build_exeext; then
2001 # Build using linker in the current directory.
2002 gcc_cv_ld=./collect-ld$build_exeext
2003 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2004 gcc_cv_ld="$LD_FOR_TARGET"
2006 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2009 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2010 PLUGIN_LD=`basename $gcc_cv_ld`
2011 AC_ARG_WITH(plugin-ld,
2012 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2013 [if test x"$withval" != x; then
2014 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2015 PLUGIN_LD="$withval"
2017 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2018 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2020 # Check to see if we are using gold instead of ld
2021 AC_MSG_CHECKING(whether we are using gold)
2023 if test x$gcc_cv_ld != x; then
2024 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2025 | grep "GNU gold" > /dev/null; then
2029 AC_MSG_RESULT($ld_is_gold)
2031 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2032 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2033 case "$ORIGINAL_LD_FOR_TARGET" in
2034 ./collect-ld | ./collect-ld$build_exeext) ;;
2035 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2038 AC_MSG_CHECKING(what linker to use)
2039 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2040 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2041 # Single tree build which includes ld. We want to prefer it
2042 # over whatever linker top-level may have detected, since
2043 # we'll use what we're building after installation anyway.
2044 AC_MSG_RESULT(newly built ld)
2046 in_tree_ld_is_elf=no
2047 if (grep 'EMUL = .*elf' ../ld/Makefile \
2048 || grep 'EMUL = .*linux' ../ld/Makefile \
2049 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2050 in_tree_ld_is_elf=yes
2051 elif test "$ld_is_gold" = yes; then
2052 in_tree_ld_is_elf=yes
2054 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
2057 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2058 if test x$gcc_cv_gld_version != x; then
2062 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2063 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2066 AC_MSG_RESULT($gcc_cv_ld)
2070 # Figure out what nm we will be using.
2071 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2072 AS_VAR_SET_IF(gcc_cv_nm,, [
2073 if test -f $gcc_cv_binutils_srcdir/configure.in \
2074 && test -f ../binutils/Makefile \
2075 && test x$build = x$host; then
2076 gcc_cv_nm=../binutils/nm-new$build_exeext
2077 elif test -x nm$build_exeext; then
2078 gcc_cv_nm=./nm$build_exeext
2079 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2080 gcc_cv_nm="$NM_FOR_TARGET"
2082 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2085 AC_MSG_CHECKING(what nm to use)
2086 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2087 # Single tree build which includes binutils.
2088 AC_MSG_RESULT(newly built nm)
2091 AC_MSG_RESULT($gcc_cv_nm)
2095 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2096 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2097 case "$ORIGINAL_NM_FOR_TARGET" in
2098 ./nm | ./nm$build_exeext) ;;
2099 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2103 # Figure out what objdump we will be using.
2104 AS_VAR_SET_IF(gcc_cv_objdump,, [
2105 if test -f $gcc_cv_binutils_srcdir/configure.in \
2106 && test -f ../binutils/Makefile \
2107 && test x$build = x$host; then
2108 # Single tree build which includes binutils.
2109 gcc_cv_objdump=../binutils/objdump$build_exeext
2110 elif test -x objdump$build_exeext; then
2111 gcc_cv_objdump=./objdump$build_exeext
2112 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2113 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2115 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2118 AC_MSG_CHECKING(what objdump to use)
2119 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2120 # Single tree build which includes binutils.
2121 AC_MSG_RESULT(newly built objdump)
2122 elif test x$gcc_cv_objdump = x; then
2123 AC_MSG_RESULT(not found)
2125 AC_MSG_RESULT($gcc_cv_objdump)
2128 # Figure out what readelf we will be using.
2129 AS_VAR_SET_IF(gcc_cv_readelf,, [
2130 if test -f $gcc_cv_binutils_srcdir/configure.in \
2131 && test -f ../binutils/Makefile \
2132 && test x$build = x$host; then
2133 # Single tree build which includes binutils.
2134 gcc_cv_readelf=../binutils/readelf$build_exeext
2135 elif test -x readelf$build_exeext; then
2136 gcc_cv_readelf=./readelf$build_exeext
2138 AC_PATH_PROG(gcc_cv_readelf, readelf)
2141 AC_MSG_CHECKING(what readelf to use)
2142 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2143 # Single tree build which includes binutils.
2144 AC_MSG_RESULT(newly built readelf)
2145 elif test x$gcc_cv_readelf = x; then
2146 AC_MSG_RESULT(not found)
2148 AC_MSG_RESULT($gcc_cv_readelf)
2151 # Figure out what assembler alignment features are present.
2152 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2156 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2157 [Define if your assembler supports .balign and .p2align.])])
2159 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2162 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2163 [Define if your assembler supports specifying the maximum number
2164 of bytes to skip when using the GAS .p2align command.])])
2166 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2169 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2170 [Define if your assembler supports .literal16.])])
2172 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2174 [conftest_label1: .word 0
2176 conftest_label2: .word 0
2178 [if test x$gcc_cv_nm != x; then
2179 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2180 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2181 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2183 else gcc_cv_as_subsection_m1=yes
2185 rm -f conftest.nm1 conftest.nm2
2187 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2188 [Define if your assembler supports .subsection and .subsection -1 starts
2189 emitting at the beginning of your section.])])
2191 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2194 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2196 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2198 [ .weakref foobar, barfnot],,
2199 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2201 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2204 .NSUBSPA $CODE$,COMDAT],,
2205 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2207 # .hidden needs to be supported in both the assembler and the linker,
2208 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2209 # This is irritatingly difficult to feature test for; we have to check the
2210 # date string after the version number. If we've got an in-tree
2211 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2213 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2214 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2218 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2219 # STV_HIDDEN, so disable .hidden support if so.
2221 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2222 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2223 cat > conftest.s <<EOF
2230 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2231 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2232 grep '\.hidden default' > /dev/null; then
2235 gcc_cv_as_hidden=yes
2238 # Assume bug is present if objdump is missing.
2243 gcc_cv_as_hidden=yes
2248 # Darwin as has some visibility support, though with a different syntax.
2249 gcc_cv_as_hidden=yes
2253 # gnu_indirect_function type is an extension proposed at
2254 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2255 # selection of function implementation
2256 AC_ARG_ENABLE(gnu-indirect-function,
2257 [AS_HELP_STRING([--enable-gnu-indirect-function],
2258 [enable the use of the @gnu_indirect_function to glibc systems])],
2259 [case $enable_gnu_indirect_function in
2261 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2262 Valid choices are 'yes' and 'no'.]) ;;
2264 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2265 if test x$enable_gnu_indirect_function = xyes; then
2266 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2267 [Define if your system supports gnu indirect functions.])
2271 if test $in_tree_ld != yes ; then
2272 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2273 if echo "$ld_ver" | grep GNU > /dev/null; then
2274 if test x"$ld_is_gold" = xyes; then
2275 # GNU gold --version looks like this:
2277 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2279 # We extract the binutils version which is more familiar and specific
2280 # than the gold version.
2281 ld_vers=`echo $ld_ver | sed -n \
2282 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2284 # GNU ld --version looks like this:
2286 # GNU ld (GNU Binutils) 2.21.51.20110225
2287 ld_vers=`echo $ld_ver | sed -n \
2288 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2290 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2291 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2292 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2293 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2298 # Solaris 2 ld -V output looks like this for a regular version:
2300 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2302 # but test versions add stuff at the end:
2304 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2306 ld_ver=`$gcc_cv_ld -V 2>&1`
2307 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2308 ld_vers=`echo $ld_ver | sed -n \
2309 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2310 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2311 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2319 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2320 [[if test $in_tree_ld = yes ; then
2322 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2323 && test $in_tree_ld_is_elf = yes; then
2324 gcc_cv_ld_hidden=yes
2327 gcc_cv_ld_hidden=yes
2328 if test x"$ld_is_gold" = xyes; then
2330 elif echo "$ld_ver" | grep GNU > /dev/null; then
2331 if test 0"$ld_date" -lt 20020404; then
2332 if test -n "$ld_date"; then
2333 # If there was date string, but was earlier than 2002-04-04, fail
2335 elif test -z "$ld_vers"; then
2336 # If there was no date string nor ld version number, something is wrong
2339 test -z "$ld_vers_patch" && ld_vers_patch=0
2340 if test "$ld_vers_major" -lt 2; then
2342 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2343 gcc_cv_ld_hidden="no"
2344 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2352 # Darwin ld has some visibility support.
2353 gcc_cv_ld_hidden=yes
2355 hppa64*-*-hpux* | ia64*-*-hpux*)
2356 gcc_cv_ld_hidden=yes
2359 # .hidden support was backported to Solaris 8, starting with ld
2361 if test "$ld_vers_minor" -ge 276; then
2362 gcc_cv_ld_hidden=yes
2367 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2368 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2369 # .symbolic was only added in Solaris 9 12/02.
2370 gcc_cv_ld_hidden=yes
2378 libgcc_visibility=no
2379 AC_SUBST(libgcc_visibility)
2380 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2381 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2382 libgcc_visibility=yes
2383 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2384 [Define if your assembler and linker support .hidden.])
2387 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2388 gcc_cv_ld_ro_rw_mix=unknown
2389 if test $in_tree_ld = yes ; then
2390 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2391 && test $in_tree_ld_is_elf = yes; then
2392 gcc_cv_ld_ro_rw_mix=read-write
2394 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2395 echo '.section myfoosect, "a"' > conftest1.s
2396 echo '.section myfoosect, "aw"' > conftest2.s
2397 echo '.byte 1' >> conftest2.s
2398 echo '.section myfoosect, "a"' > conftest3.s
2399 echo '.byte 0' >> conftest3.s
2400 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2401 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2402 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2403 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2404 conftest2.o conftest3.o > /dev/null 2>&1; then
2405 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2406 | sed -e '/myfoosect/!d' -e N`
2407 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2408 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2409 gcc_cv_ld_ro_rw_mix=read-only
2411 gcc_cv_ld_ro_rw_mix=read-write
2416 rm -f conftest.* conftest[123].*
2419 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2420 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2421 [Define if your linker links a mix of read-only
2422 and read-write sections into a read-write section.])
2424 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2426 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2427 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2435 [[# GAS versions before 2.11 do not support uleb128,
2436 # despite appearing to.
2437 # ??? There exists an elf-specific test that will crash
2438 # the assembler. Perhaps it's better to figure out whether
2439 # arbitrary sections are supported and try the test.
2440 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2441 if echo "$as_ver" | grep GNU > /dev/null; then
2442 as_vers=`echo $as_ver | sed -n \
2443 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2444 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2445 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2446 if test $as_major -eq 2 && test $as_minor -lt 11
2448 else gcc_cv_as_leb128=yes
2451 [AC_DEFINE(HAVE_AS_LEB128, 1,
2452 [Define if your assembler supports .sleb128 and .uleb128.])])
2454 # Check if we have assembler support for unwind directives.
2455 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2462 .cfi_escape 1, 2, 3, 4, 5
2466 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2467 # read-only and read-write sections, we need to make sure that the
2468 # assembler used emits read-write .eh_frame sections.
2469 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2470 if test "x$gcc_cv_objdump" != x; then
2471 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2472 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2473 gcc_cv_as_cfi_directive=no
2476 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2477 # On Solaris/x86, make sure that GCC and gas agree on using
2478 # read-only .eh_frame sections for 64-bit.
2479 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2480 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2481 sed -e /.eh_frame/!d -e N | \
2482 grep READONLY > /dev/null; then
2483 gcc_cv_as_cfi_directive=yes
2485 gcc_cv_as_cfi_directive=no
2489 gcc_cv_as_cfi_directive=yes
2494 # no objdump, err on the side of caution
2495 gcc_cv_as_cfi_directive=no
2498 gcc_cv_as_cfi_directive=yes
2502 gcc_cv_as_cfi_directive=yes
2505 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2506 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2510 .cfi_adjust_cfa_offset 64
2512 .cfi_adjust_cfa_offset 128
2515 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2516 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2517 gcc_cv_as_cfi_advance_working=yes
2521 # no objdump, err on the side of caution
2522 gcc_cv_as_cfi_advance_working=no
2524 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2525 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2526 [`if test $gcc_cv_as_cfi_directive = yes \
2527 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2528 [Define 0/1 if your assembler supports CFI directives.])
2530 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2531 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2532 gcc_cv_as_cfi_personality_directive, ,,
2535 .cfi_personality 0, symbol
2537 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2538 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2539 then echo 1; else echo 0; fi`],
2540 [Define 0/1 if your assembler supports .cfi_personality.])
2542 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2543 gcc_cv_as_cfi_sections_directive, ,,
2545 .cfi_sections .debug_frame, .eh_frame
2549 win32 | pe | cygwin* | mingw32* | uwin*)
2550 # Need to check that we generated the correct relocation for the
2551 # .debug_frame section. This was fixed for binutils 2.21.
2552 gcc_cv_as_cfi_sections_directive=no
2553 if test "x$gcc_cv_objdump" != x; then
2554 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2555 grep secrel > /dev/null; then
2556 gcc_cv_as_cfi_sections_directive=yes
2561 gcc_cv_as_cfi_sections_directive=yes
2564 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2565 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2566 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2567 then echo 1; else echo 0; fi`],
2568 [Define 0/1 if your assembler supports .cfi_sections.])
2570 # GAS versions up to and including 2.11.0 may mis-optimize
2572 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2580 .section .eh_frame,"aw",@progbits
2582 .4byte .LECIE1-.LSCIE1
2596 .4byte .LEFDE1-.LASFDE1
2598 .4byte .LASFDE1-__FRAME_BEGIN__
2606 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2607 cat > conftest.lit <<EOF
2608 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2609 0010 01000000 12000000 18000000 00000000 ................
2610 0020 08000000 04080000 0044 .........D @&t@
2612 cat > conftest.big <<EOF
2613 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2614 0010 00000001 00000012 00000018 00000000 ................
2615 0020 00000008 04000000 0844 .........D @&t@
2617 # If the assembler didn't choke, and we can objdump,
2618 # and we got the correct data, then succeed.
2619 # The text in the here-document typically retains its unix-style line
2620 # endings, while the output of objdump will use host line endings.
2621 # Therefore, use diff -b for the comparisons.
2622 if test x$gcc_cv_objdump != x \
2623 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2624 | tail -3 > conftest.got \
2625 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2626 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2628 gcc_cv_as_eh_frame=yes
2629 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2630 gcc_cv_as_eh_frame=buggy
2632 # Uh oh, what do we do now?
2633 gcc_cv_as_eh_frame=no
2636 if test $gcc_cv_as_eh_frame = buggy; then
2637 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2638 [Define if your assembler mis-optimizes .eh_frame data.])
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])
2644 if test $gcc_cv_as_shf_merge = no; then
2645 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2646 [elf,2,12,0], [--fatal-warnings],
2647 [.section .rodata.str, "aMS", %progbits, 1])
2649 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2650 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2651 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2653 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2654 gcc_cv_as_comdat_group,
2655 [elf,2,16,0], [--fatal-warnings],
2656 [.section .text,"axG",@progbits,.foo,comdat])
2657 if test $gcc_cv_as_comdat_group = yes; then
2658 gcc_cv_as_comdat_group_percent=no
2659 gcc_cv_as_comdat_group_group=no
2661 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2662 gcc_cv_as_comdat_group_percent,
2663 [elf,2,16,0], [--fatal-warnings],
2664 [.section .text,"axG",%progbits,.foo,comdat])
2665 if test $gcc_cv_as_comdat_group_percent = yes; then
2666 gcc_cv_as_comdat_group_group=no
2669 # Sun as uses a completely different syntax.
2674 .group foo,".text%foo",#comdat
2675 .section ".text%foo", #alloc,#execinstr,#progbits
2680 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2682 .group foo,.text%foo,#comdat
2683 .section .text%foo, "ax", @progbits
2689 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2690 gcc_cv_as_comdat_group_group,
2696 if test x"$ld_is_gold" = xyes; then
2698 elif test $in_tree_ld = yes ; then
2700 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2701 && test $in_tree_ld_is_elf = yes; then
2704 elif echo "$ld_ver" | grep GNU > /dev/null; then
2706 if test 0"$ld_date" -lt 20050308; then
2707 if test -n "$ld_date"; then
2708 # If there was date string, but was earlier than 2005-03-08, fail
2710 elif test "$ld_vers_major" -lt 2; then
2712 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2719 *-*-solaris2.1[1-9]*)
2721 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2722 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2725 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2726 # least ld version 1.2267.
2727 if test "$ld_vers_major" -gt 1; then
2729 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2731 elif test "$ld_vers_minor" -ge 2267; then
2736 # Assume linkers other than GNU ld don't support COMDAT group.
2742 # Allow overriding the automatic COMDAT group tests above.
2743 AC_ARG_ENABLE(comdat,
2744 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2745 [comdat_group="$enable_comdat"])
2746 if test $comdat_group = no; then
2747 gcc_cv_as_comdat_group=no
2748 gcc_cv_as_comdat_group_percent=no
2749 gcc_cv_as_comdat_group_group=no
2751 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2752 [`if test $gcc_cv_as_comdat_group = yes \
2753 || test $gcc_cv_as_comdat_group_percent = yes \
2754 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2755 [Define 0/1 if your assembler and linker support COMDAT groups.])
2757 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2758 gcc_cv_as_discriminator,
2762 .loc 1 1 0 discriminator 1],,
2763 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2764 [Define if your assembler supports the .loc discriminator sub-directive.])])
2766 # Thread-local storage - the check is heavily parameterized.
2775 .section ".tdata","awT",@progbits
2778 ldq $27,__tls_get_addr($29) !literal!1
2779 lda $16,foo($29) !tlsgd!1
2780 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2781 ldq $27,__tls_get_addr($29) !literal!2
2782 lda $16,foo($29) !tlsldm!2
2783 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2784 ldq $1,foo($29) !gotdtprel
2785 ldah $2,foo($29) !dtprelhi
2786 lda $3,foo($2) !dtprello
2787 lda $4,foo($29) !dtprel
2788 ldq $1,foo($29) !gottprel
2789 ldah $2,foo($29) !tprelhi
2790 lda $3,foo($2) !tprello
2791 lda $4,foo($29) !tprel'
2794 tls_as_opt=--fatal-warnings
2796 cris-*-*|crisv32-*-*)
2798 .section ".tdata","awT",@progbits
2805 tls_as_opt=--fatal-warnings
2809 .section ".tdata","awT",@progbits
2821 .section ".tdata","awT",@progbits
2825 addil LT%foo-$tls_gdidx$,gp
2826 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2829 addil LT%foo-$tls_ldidx$,gp
2831 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2832 addil LR%foo-$tls_dtpoff$,%ret0
2833 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2835 addil LT%foo-$tls_ieoff$,gp
2836 ldw RT%foo-$tls_ieoff$(%r1),%t2
2839 addil LR%foo-$tls_leoff$,%t1
2840 ldo RR%foo-$tls_leoff$(%r1),%t2'
2843 tls_as_opt=--fatal-warnings
2847 .section ".tdata","awT",%progbits
2858 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2860 i[34567]86-*-solaris2.*)
2862 tga_func=___tls_get_addr
2864 x86_64-*-solaris2.1[0-9]*)
2866 tga_func=__tls_get_addr
2872 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2874 .section .tdata,"awt",@progbits'
2878 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2879 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2883 .section ".tdata","awT",@progbits'
2886 tls_as_opt="--fatal-warnings"
2888 conftest_s="$conftest_s
2892 leal foo@tlsgd(,%ebx,1), %eax
2893 leal foo@tlsldm(%ebx), %eax
2894 leal foo@dtpoff(%eax), %edx
2895 movl foo@gottpoff(%ebx), %eax
2896 subl foo@gottpoff(%ebx), %eax
2897 addl foo@gotntpoff(%ebx), %eax
2898 movl foo@indntpoff, %eax
2899 movl \$foo@tpoff, %eax
2900 subl \$foo@tpoff, %eax
2901 leal foo@ntpoff(%ecx), %eax"
2905 .section ".tdata","awT",@progbits
2909 leaq foo@TLSGD(%rip), %rdi
2910 leaq foo@TLSLD(%rip), %rdi
2911 leaq foo@DTPOFF(%rax), %rdx
2912 movq foo@GOTTPOFF(%rip), %rax
2913 movq $foo@TPOFF, %rax'
2916 tls_as_opt=--fatal-warnings
2920 .section ".tdata","awT",@progbits
2923 addl r16 = @ltoff(@dtpmod(foo#)), gp
2924 addl r17 = @ltoff(@dtprel(foo#)), gp
2925 addl r18 = @ltoff(@tprel(foo#)), gp
2926 addl r19 = @dtprel(foo#), gp
2927 adds r21 = @dtprel(foo#), r13
2928 movl r23 = @dtprel(foo#)
2929 addl r20 = @tprel(foo#), gp
2930 adds r22 = @tprel(foo#), r13
2931 movl r24 = @tprel(foo#)'
2934 tls_as_opt=--fatal-warnings
2938 .section .tdata,"awT",@progbits
2942 addiu $4, $28, %tlsgd(x)
2943 addiu $4, $28, %tlsldm(x)
2944 lui $4, %dtprel_hi(x)
2945 addiu $4, $4, %dtprel_lo(x)
2946 lw $4, %gottprel(x)($28)
2947 lui $4, %tprel_hi(x)
2948 addiu $4, $4, %tprel_lo(x)'
2951 tls_as_opt='-32 --fatal-warnings'
2955 .section .tdata,"awT",@progbits
2960 move.l x@TLSGD(%a5),%a0
2961 move.l x@TLSLDM(%a5),%a0
2962 move.l x@TLSLDO(%a5),%a0
2963 move.l x@TLSIE(%a5),%a0
2964 move.l x@TLSLE(%a5),%a0'
2967 tls_as_opt='--fatal-warnings'
2971 .section ".tdata","awT",@progbits
2979 addi 3,31,ld0@got@tlsgd
2981 addi 3,31,x1@got@tlsld
2984 addis 9,3,x2@dtprel@ha
2985 addi 9,9,x2@dtprel@l
2986 lwz 9,x3@got@tprel(31)
2989 addis 9,2,x2@tprel@ha
2990 addi 9,9,x2@tprel@l'
2993 tls_as_opt="-a32 --fatal-warnings"
2997 .section ".tdata","awT",@progbits
3005 addi 3,2,ld0@got@tlsgd
3011 addi 3,2,x1@got@tlsld
3017 addis 9,3,x2@dtprel@ha
3018 addi 9,9,x2@dtprel@l
3021 ld 9,x3@got@dtprel(2)
3027 tls_as_opt="-a64 --fatal-warnings"
3031 .section ".tdata","awT",@progbits
3040 l %r1,foo@GOTNTPOFF(%r12)
3041 l %r1,0(%r1):tls_load:foo
3042 bas %r14,0(%r1,%r13):tls_gdcall:foo
3043 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3046 tls_as_opt="-m31 --fatal-warnings"
3050 .section ".tdata","awT",@progbits
3058 lg %r1,foo@GOTNTPOFF(%r12)
3059 larl %r1,foo@INDNTPOFF
3060 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3061 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3064 tls_as_opt="-m64 -Aesame --fatal-warnings"
3066 sh-*-* | sh[34]-*-*)
3068 .section ".tdata","awT",@progbits
3078 tls_as_opt=--fatal-warnings
3082 sparc*-sun-solaris2.*)
3084 tga_func=__tls_get_addr
3090 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3092 .section ".tdata",#alloc,#write,#tls'
3097 .section ".tdata","awT",@progbits'
3100 tls_as_opt="-32 --fatal-warnings"
3102 conftest_s="$conftest_s
3105 sethi %tgd_hi22(foo), %o0
3106 add %o0, %tgd_lo10(foo), %o1
3107 add %l7, %o1, %o0, %tgd_add(foo)
3108 call __tls_get_addr, %tgd_call(foo)
3109 sethi %tldm_hi22(foo), %l1
3110 add %l1, %tldm_lo10(foo), %l2
3111 add %l7, %l2, %o0, %tldm_add(foo)
3112 call __tls_get_addr, %tldm_call(foo)
3113 sethi %tldo_hix22(foo), %l3
3114 xor %l3, %tldo_lox10(foo), %l4
3115 add %o0, %l4, %l5, %tldo_add(foo)
3116 sethi %tie_hi22(foo), %o3
3117 add %o3, %tie_lo10(foo), %o3
3118 ld [%l7 + %o3], %o2, %tie_ld(foo)
3119 add %g7, %o2, %o4, %tie_add(foo)
3120 sethi %tle_hix22(foo), %l1
3121 xor %l1, %tle_lox10(foo), %o5
3122 ld [%g7 + %o5], %o1"
3126 .section ".tdata","awT",@progbits
3129 movi a8, foo@TLSFUNC
3130 movi a10, foo@TLSARG
3131 callx8.tls a8, foo@TLSCALL'
3138 if test "x$enable_tls" = xno ; then
3139 : # TLS explicitly disabled.
3140 elif test "x$enable_tls" = xyes ; then
3141 set_have_as_tls=yes # TLS explicitly enabled.
3142 elif test -z "$tls_first_major"; then
3143 : # If we don't have a check, assume no support.
3145 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3146 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3147 [set_have_as_tls=yes])
3151 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3152 # with TLS support are in use, native TLS cannot work.
3156 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3157 # gld with TLS support are in use, native TLS cannot work.
3160 # TLS was introduced in the Solaris 9 FCS release and backported to
3161 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3162 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3163 # ld and GCC don't support any longer.
3165 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3167 # Check ld and ld.so.1 TLS support.
3168 if echo "$ld_ver" | grep GNU > /dev/null; then
3169 # Assume all interesting versions of GNU ld have TLS support.
3170 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3174 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3176 min_tls_ld_vers_minor=280
3178 # Solaris 8/SPARC ld has TLS support since version 1.272.
3179 sparc*-*-solaris2.8)
3180 min_tls_ld_vers_minor=272
3182 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3184 min_tls_ld_vers_minor=374
3186 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3187 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3188 min_tls_ld_vers_minor=343
3191 if test "$ld_vers_major" -gt 1 || \
3192 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3198 AC_MSG_RESULT($ld_tls_support)
3201 save_LDFLAGS="$LDFLAGS"
3205 AC_MSG_CHECKING(alternate thread library)
3207 # TLS support was backported to Solaris 8 patches, but only lives in
3208 # the alternate thread library which became the default in Solaris 9.
3209 # We want to always use that, irrespective of TLS support.
3211 # Take multilib subdir into account. There's no spec to handle
3212 # this. The 64 symlink exists since Solaris 8.
3213 lwp_dir=/usr/lib/lwp
3214 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3215 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3222 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3223 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3224 [Define to the linker flags to use for -pthread.])
3225 AC_MSG_RESULT($lwp_dir)
3227 AC_MSG_CHECKING(library containing $tga_func)
3228 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3229 # (32-bit x86) only lived in libthread, so check for that. Keep
3230 # set_have_as_tls if found, disable if not.
3231 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3232 # Clear LIBS if we cannot support TLS.
3233 if test $set_have_as_tls = no; then
3236 # Always define LIB_TLS_SPEC, even without TLS support.
3237 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3238 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3239 AC_MSG_RESULT($LIBS)
3242 LDFLAGS="$save_LDFLAGS"
3245 if test $set_have_as_tls = yes ; then
3246 AC_DEFINE(HAVE_AS_TLS, 1,
3247 [Define if your assembler and linker support thread-local storage.])
3250 # Target-specific assembler checks.
3252 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3253 gcc_cv_ld_static_dynamic=no
3254 gcc_cv_ld_static_option='-Bstatic'
3255 gcc_cv_ld_dynamic_option='-Bdynamic'
3256 if test $in_tree_ld = yes ; then
3257 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3258 gcc_cv_ld_static_dynamic=yes
3260 elif test x$gcc_cv_ld != x; then
3261 # Check if linker supports -Bstatic/-Bdynamic option
3262 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3263 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3264 gcc_cv_ld_static_dynamic=yes
3267 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3269 gcc_cv_ld_static_dynamic=yes
3270 gcc_cv_ld_static_option="-noso"
3271 gcc_cv_ld_dynamic_option="-so_archive"
3273 # HP-UX ld uses -a flags to select between shared and archive.
3275 if test x"$gnu_ld" = xno; then
3276 gcc_cv_ld_static_dynamic=yes
3277 gcc_cv_ld_static_option="-aarchive_shared"
3278 gcc_cv_ld_dynamic_option="-adefault"
3281 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3283 gcc_cv_ld_static_dynamic=yes
3285 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3287 gcc_cv_ld_static_dynamic=yes
3292 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3293 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3294 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3295 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3296 [Define to the linker option to disable use of shared objects.])
3297 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3298 [Define to the linker option to enable use of shared objects.])
3300 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3302 if test x"$demangler_in_ld" = xyes; then
3303 AC_MSG_CHECKING(linker --demangle support)
3304 gcc_cv_ld_demangle=no
3305 if test $in_tree_ld = yes; then
3306 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3307 gcc_cv_ld_demangle=yes
3309 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3310 # Check if the GNU linker supports --demangle option
3311 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3312 gcc_cv_ld_demangle=yes
3315 if test x"$gcc_cv_ld_demangle" = xyes; then
3316 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3317 [Define if your linker supports --demangle option.])
3319 AC_MSG_RESULT($gcc_cv_ld_demangle)
3322 AC_MSG_CHECKING(linker plugin support)
3324 if test -f liblto_plugin.la; then
3325 save_ld_ver="$ld_ver"
3326 save_ld_vers_major="$ld_vers_major"
3327 save_ld_vers_minor="$ld_vers_minor"
3328 save_ld_is_gold="$ld_is_gold"
3332 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3334 # FIXME: ld_is_gold?
3335 ld_vers_major="$gcc_cv_gld_major_version"
3336 ld_vers_minor="$gcc_cv_gld_minor_version"
3338 # Determine plugin linker version.
3339 # FIXME: Partial duplicate from above, generalize.
3341 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3342 if echo "$ld_ver" | grep GNU > /dev/null; then
3343 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3345 ld_vers=`echo $ld_ver | sed -n \
3346 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3348 ld_vers=`echo $ld_ver | sed -n \
3349 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3351 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3352 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3357 # Determine plugin support.
3358 if echo "$ld_ver" | grep GNU > /dev/null; then
3359 # Require GNU ld or gold 2.21+ for plugin support by default.
3360 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3362 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3363 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3368 ld_ver="$save_ld_ver"
3369 ld_vers_major="$save_ld_vers_major"
3370 ld_vers_minor="$save_ld_vers_minor"
3371 ld_is_gold="$save_ld_is_gold"
3373 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3374 [Define to the level of your linker's plugin support.])
3375 AC_MSG_RESULT($gcc_cv_lto_plugin)
3378 # All TARGET_ABI_OSF targets.
3379 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3380 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3381 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3384 extbl $3, $2, $3 !lituse_bytoff!1
3385 ldq $2, a($29) !literal!1
3386 ldq $4, b($29) !literal!2
3387 ldq_u $3, 0($2) !lituse_base!1
3388 ldq $27, f($29) !literal!5
3389 jsr $26, ($27), f !lituse_jsr!5
3390 ldah $29, 0($26) !gpdisp!3
3391 lda $0, c($29) !gprel
3392 ldah $1, d($29) !gprelhigh
3393 lda $1, d($1) !gprellow
3394 lda $29, 0($29) !gpdisp!3],,
3395 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3396 [Define if your assembler supports explicit relocations.])])
3397 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3398 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3401 ldq $27, a($29) !literal!1
3402 jsr $26, ($27), a !lituse_jsrdirect!1],,
3403 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3404 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3408 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3409 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3410 [-no-mul-bug-abort], [.text],,
3411 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3412 [Define if your assembler supports the -no-mul-bug-abort option.])])
3416 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3417 [.register %g2, #scratch],,
3418 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3419 [Define if your assembler supports .register.])])
3421 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3423 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3424 [Define if your assembler supports -relax option.])])
3426 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3427 gcc_cv_as_sparc_gotdata_op,,
3434 sethi %gdop_hix22(foo), %g1
3435 xor %g1, %gdop_lox10(foo), %g1
3436 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3437 [if test x$gcc_cv_ld != x \
3438 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3439 if test x$gcc_cv_objdump != x; then
3440 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3441 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3442 gcc_cv_as_sparc_gotdata_op=no
3444 gcc_cv_as_sparc_gotdata_op=yes
3449 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3450 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3452 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3453 gcc_cv_as_sparc_ua_pcrel,,
3461 .uaword %r_disp32(foo)],
3462 [if test x$gcc_cv_ld != x \
3463 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3464 gcc_cv_as_sparc_ua_pcrel=yes
3467 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3468 [Define if your assembler and linker support unaligned PC relative relocs.])
3470 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3471 gcc_cv_as_sparc_ua_pcrel_hidden,,
3476 .uaword %r_disp32(foo)
3477 .byte 0x32, 0x33, 0x34
3482 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3483 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3484 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3485 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3486 if $gcc_cv_objdump -R conftest 2> /dev/null \
3487 | grep 'DISP32' > /dev/null 2>&1; then
3490 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3494 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3495 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3496 ]) # unaligned pcrel relocs
3498 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3499 gcc_cv_as_sparc_offsetable_lo10,,
3502 or %g1, %lo(ab) + 12, %g1
3503 or %g1, %lo(ab + 12), %g1],
3504 [if test x$gcc_cv_objdump != x \
3505 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3506 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3507 gcc_cv_as_sparc_offsetable_lo10=yes
3509 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3510 [Define if your assembler supports offsetable %lo().])])
3512 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3513 gcc_cv_as_sparc_fmaf,,
3516 .register %g2, #scratch
3517 .register %g3, #scratch
3519 fmaddd %f0, %f2, %f4, %f6
3520 addxccc %g1, %g2, %g3
3521 fsrl32 %f2, %f4, %f8
3522 fnaddd %f10, %f12, %f14],,
3523 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3524 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3528 i[34567]86-*-* | x86_64-*-*)
3532 # Full C++ conformance when using a shared libstdc++-v3 requires some
3533 # support from the Cygwin DLL, which in more recent versions exports
3534 # wrappers to aid in interposing and redirecting operators new, delete,
3535 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3536 # are configuring for a version of Cygwin that exports the wrappers.
3537 if test x$host = x$target; then
3538 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3540 # Can't check presence of libc functions during cross-compile, so
3541 # we just have to assume we're building for an up-to-date target.
3542 gcc_ac_cygwin_dll_wrappers=yes
3544 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3545 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3546 [Define if you want to generate code by default that assumes that the
3547 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3550 cygwin* | pe | mingw32*)
3551 # Recent binutils allows the three-operand form of ".comm" on PE. This
3552 # definition is used unconditionally to initialise the default state of
3553 # the target option variable that governs usage of the feature.
3554 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3555 [2,19,52],,[.comm foo,1,32])
3556 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3557 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3558 [Define if your assembler supports specifying the alignment
3559 of objects allocated using the GAS .comm command.])
3560 # Used for DWARF 2 in PE
3561 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3562 gcc_cv_as_ix86_pe_secrel32,
3568 [if test x$gcc_cv_ld != x \
3569 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3570 gcc_cv_as_ix86_pe_secrel32=yes
3573 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3574 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3575 # Test if the assembler supports the extended form of the .section
3576 # directive that specifies section alignment. LTO support uses this,
3577 # but normally only after installation, so we warn but don't fail the
3578 # configure if LTO is enabled but the assembler does not support it.
3579 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3580 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3581 if test x$gcc_cv_as_section_has_align != xyes; then
3582 case ",$enable_languages," in
3584 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3588 # Test if the assembler supports the section flag 'e' for specifying
3589 # an excluded section.
3590 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3594 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3595 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3596 [Define if your assembler supports specifying the section flag e.])
3600 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3601 gcc_cv_as_ix86_filds,,,
3602 [filds mem; fists mem],,
3603 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3604 [Define if your assembler uses filds and fists mnemonics.])])
3606 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3607 gcc_cv_as_ix86_fildq,,,
3608 [fildq mem; fistpq mem],,
3609 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3610 [Define if your assembler uses fildq and fistq mnemonics.])])
3612 gcc_GAS_CHECK_FEATURE([cmov syntax],
3613 gcc_cv_as_ix86_cmov_sun_syntax,,,
3614 [cmovl.l %edx, %eax],,
3615 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3616 [Define if your assembler supports the Sun syntax for cmov.])])
3618 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3619 gcc_cv_as_ix86_ffreep,,,
3621 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3622 [Define if your assembler supports the ffreep mnemonic.])])
3624 gcc_GAS_CHECK_FEATURE([.quad directive],
3625 gcc_cv_as_ix86_quad,,,
3627 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3628 [Define if your assembler supports the .quad directive.])])
3630 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3631 gcc_cv_as_ix86_sahf,,,
3634 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3635 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3637 gcc_GAS_CHECK_FEATURE([swap suffix],
3638 gcc_cv_as_ix86_swap,,,
3639 [movl.s %esp, %ebp],,
3640 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3641 [Define if your assembler supports the swap suffix.])])
3643 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3644 gcc_cv_as_ix86_diff_sect_delta,,,
3652 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3653 [Define if your assembler supports the subtraction of symbols in different sections.])])
3655 # These two are used unconditionally by i386.[ch]; it is to be defined
3656 # to 1 if the feature is present, 0 otherwise.
3657 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3658 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3664 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3665 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3666 [Define true if the assembler supports '.long foo@GOTOFF'.])
3668 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3669 gcc_cv_as_ix86_rep_lock_prefix,,,
3671 lock addl %edi, (%eax,%esi)
3672 lock orl $0, (%esp)],,
3673 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3674 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3676 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3677 gcc_cv_as_ix86_tlsgdplt,,,
3678 [call tls_gd@tlsgdplt],,
3679 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3680 [Define if your assembler supports @tlsgdplt.])])
3682 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3683 gcc_cv_as_ix86_tlsldmplt,,,
3684 [call tls_ld@tlsldmplt],,
3685 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3686 [Define if your assembler supports @tlsldmplt.])])
3691 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3692 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3694 addl r15 = @ltoffx(x#), gp
3696 ld8.mov r16 = [[r15]], x#],,
3697 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3698 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3704 *-*-aix*) conftest_s=' .machine "pwr5"
3708 gcc_GAS_CHECK_FEATURE([.machine directive support],
3709 gcc_cv_as_machine_directive,,,
3710 [ .machine ppc7400])
3711 if test x$gcc_cv_as_machine_directive != xyes; then
3712 echo "*** This target requires an assembler supporting \".machine\"" >&2
3713 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3714 test x$build = x$target && exit 1
3718 *) conftest_s=' .machine power4
3723 gcc_GAS_CHECK_FEATURE([mfcr field support],
3724 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3726 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3727 [Define if your assembler supports mfcr field.])])
3730 *-*-aix*) conftest_s=' .machine "pwr5"
3733 *) conftest_s=' .machine power5
3738 gcc_GAS_CHECK_FEATURE([popcntb support],
3739 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3741 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3742 [Define if your assembler supports popcntb field.])])
3745 *-*-aix*) conftest_s=' .machine "pwr5x"
3748 *) conftest_s=' .machine power5
3753 gcc_GAS_CHECK_FEATURE([fp round support],
3754 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3756 [AC_DEFINE(HAVE_AS_FPRND, 1,
3757 [Define if your assembler supports fprnd.])])
3760 *-*-aix*) conftest_s=' .machine "pwr6"
3763 *) conftest_s=' .machine power6
3768 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3769 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3771 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3772 [Define if your assembler supports mffgpr and mftgpr.])])
3775 *-*-aix*) conftest_s=' .csect .text[[PR]]
3777 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3781 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3782 *) conftest_s=' .text
3784 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3787 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3788 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3790 [AC_DEFINE(HAVE_AS_REL16, 1,
3791 [Define if your assembler supports R_PPC_REL16 relocs.])])
3794 *-*-aix*) conftest_s=' .machine "pwr6"
3797 *) conftest_s=' .machine power6
3802 gcc_GAS_CHECK_FEATURE([compare bytes support],
3803 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3805 [AC_DEFINE(HAVE_AS_CMPB, 1,
3806 [Define if your assembler supports cmpb.])])
3809 *-*-aix*) conftest_s=' .machine "pwr6"
3812 *) conftest_s=' .machine power6
3817 gcc_GAS_CHECK_FEATURE([decimal float support],
3818 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3820 [AC_DEFINE(HAVE_AS_DFP, 1,
3821 [Define if your assembler supports DFP instructions.])])
3824 *-*-aix*) conftest_s=' .machine "pwr7"
3827 *) conftest_s=' .machine power7
3832 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3833 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3835 [AC_DEFINE(HAVE_AS_VSX, 1,
3836 [Define if your assembler supports VSX instructions.])])
3839 *-*-aix*) conftest_s=' .machine "pwr7"
3842 *) conftest_s=' .machine power7
3847 gcc_GAS_CHECK_FEATURE([popcntd support],
3848 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3850 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3851 [Define if your assembler supports POPCNTD instructions.])])
3854 *-*-aix*) conftest_s=' .csect .text[[PR]]
3856 *) conftest_s=' .text
3860 gcc_GAS_CHECK_FEATURE([lwsync support],
3861 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3863 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3864 [Define if your assembler supports LWSYNC instructions.])])
3867 *-*-aix*) conftest_s=' .machine "476"
3870 *) conftest_s=' .machine "476"
3875 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3876 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3878 [AC_DEFINE(HAVE_AS_DCI, 1,
3879 [Define if your assembler supports the DCI/ICI instructions.])])
3881 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3882 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3883 [.gnu_attribute 4,1],,
3884 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3885 [Define if your assembler supports .gnu_attribute.])])
3887 gcc_GAS_CHECK_FEATURE([tls marker support],
3888 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3889 [ bl __tls_get_addr(x@tlsgd)],,
3890 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3891 [Define if your assembler supports arg info for __tls_get_addr.])])
3895 gcc_GAS_CHECK_FEATURE([.ref support],
3896 gcc_cv_as_aix_ref, [2.21.0],,
3897 [ .csect stuff[[rw]]
3903 [AC_DEFINE(HAVE_AS_REF, 1,
3904 [Define if your assembler supports .ref])])
3910 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3911 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3912 [ lw $4,%gp_rel(foo)($4)],,
3913 [if test x$target_cpu_default = x
3914 then target_cpu_default=MASK_EXPLICIT_RELOCS
3915 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3917 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3918 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3919 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3920 [Define if the assembler understands -mno-shared.])])
3922 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3923 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3924 [.gnu_attribute 4,1],,
3925 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3926 [Define if your assembler supports .gnu_attribute.])])
3928 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3929 gcc_cv_as_mips_dtprelword, [2,18,0],,
3930 [.section .tdata,"awT",@progbits
3934 .dtprelword x+0x8000],,
3935 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3936 [Define if your assembler supports .dtprelword.])])
3938 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3939 gcc_cv_as_mips_dspr1_mult,,,
3949 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3950 [Define if your assembler supports DSPR1 mult.])])
3952 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3953 gcc_cv_as_ld_jalr_reloc=no
3954 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3955 if test $in_tree_ld = yes ; then
3956 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3957 && test $in_tree_ld_is_elf = yes; then
3958 gcc_cv_as_ld_jalr_reloc=yes
3960 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3961 echo ' .ent x' > conftest.s
3962 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3963 echo ' ld $25,%call16(y)($28)' >> conftest.s
3964 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3965 echo '1: jalr $25' >> conftest.s
3966 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3967 echo '1: jalr $25' >> conftest.s
3968 echo ' .end x' >> conftest.s
3969 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3970 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3971 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3972 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3973 gcc_cv_as_ld_jalr_reloc=yes
3979 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3980 if test x$target_cpu_default = x; then
3981 target_cpu_default=MASK_RELAX_PIC_CALLS
3983 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3986 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3988 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3989 [gcc_cv_ld_mips_personality_relaxation],
3990 [gcc_cv_ld_mips_personality_relaxation=no
3991 if test $in_tree_ld = yes ; then
3992 if test "$gcc_cv_gld_major_version" -eq 2 \
3993 -a "$gcc_cv_gld_minor_version" -ge 21 \
3994 -o "$gcc_cv_gld_major_version" -gt 2; then
3995 gcc_cv_ld_mips_personality_relaxation=yes
3997 elif test x$gcc_cv_as != x \
3998 -a x$gcc_cv_ld != x \
3999 -a x$gcc_cv_readelf != x ; then
4000 cat > conftest.s <<EOF
4002 .cfi_personality 0x80,indirect_ptr
4009 .section .data,"aw",@progbits
4013 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4014 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4015 if $gcc_cv_readelf -d conftest 2>&1 \
4016 | grep TEXTREL > /dev/null 2>&1; then
4018 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4019 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4022 gcc_cv_ld_mips_personality_relaxation=yes
4026 rm -f conftest.s conftest.o conftest])
4027 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4028 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4029 [Define if your linker can relax absolute .eh_frame personality
4030 pointers into PC-relative form.])
4035 # Mips and HP-UX need the GNU assembler.
4036 # Linux on IA64 might be able to use the Intel assembler.
4039 mips*-*-* | *-*-hpux* )
4040 if test x$gas_flag = xyes \
4041 || test x"$host" != x"$build" \
4042 || test ! -x "$gcc_cv_as" \
4043 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4046 echo "*** This configuration requires the GNU assembler" >&2
4052 # ??? Not all targets support dwarf2 debug_line, even within a version
4053 # of gas. Moreover, we need to emit a valid instruction to trigger any
4054 # info to the output file. So, as supported targets are added to gas 2.11,
4055 # add some instruction here to (also) show we expect this might work.
4056 # ??? Once 2.11 is released, probably need to add first known working
4057 # version to the per-target configury.
4059 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4060 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4070 if test x"$insn" != x; then
4072 .file 1 \"conftest.s\"
4075 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4076 gcc_cv_as_dwarf2_debug_line,
4077 [elf,2,11,0],, [$conftest_s],
4078 [if test x$gcc_cv_objdump != x \
4079 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4080 | grep debug_line > /dev/null 2>&1; then
4081 gcc_cv_as_dwarf2_debug_line=yes
4084 # The .debug_line file table must be in the exact order that
4085 # we specified the files, since these indices are also used
4086 # by DW_AT_decl_file. Approximate this test by testing if
4087 # the assembler bitches if the same index is assigned twice.
4088 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4089 gcc_cv_as_dwarf2_file_buggy,,,
4093 if test $gcc_cv_as_dwarf2_debug_line = yes \
4094 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4095 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4096 [Define if your assembler supports dwarf2 .file/.loc directives,
4097 and preserves file table indices exactly as given.])
4100 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4101 gcc_cv_as_gdwarf2_flag,
4102 [elf,2,11,0], [--gdwarf2], [$insn],,
4103 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4104 [Define if your assembler supports the --gdwarf2 option.])])
4106 gcc_GAS_CHECK_FEATURE([--gstabs option],
4107 gcc_cv_as_gstabs_flag,
4108 [elf,2,11,0], [--gstabs], [$insn],
4109 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4110 # and warns about it, but still exits successfully. So check for
4112 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4114 else gcc_cv_as_gstabs_flag=yes
4116 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4117 [Define if your assembler supports the --gstabs option.])])
4119 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4120 gcc_cv_as_debug_prefix_map_flag,
4121 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4122 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4123 [Define if your assembler supports the --debug-prefix-map option.])])
4126 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4129 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4130 [Define if your assembler supports .lcomm with an alignment field.])])
4132 AC_ARG_ENABLE(gnu-unique-object,
4133 [AS_HELP_STRING([--enable-gnu-unique-object],
4134 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4135 [case $enable_gnu_unique_object in
4137 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4138 Valid choices are 'yes' and 'no'.]) ;;
4140 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4142 [.type foo, @gnu_unique_object],,
4143 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4144 [[if test x$host = x$build -a x$host = x$target &&
4145 ldd --version 2>/dev/null &&
4146 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4147 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4148 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4149 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4150 if test "$glibcnum" -ge 2011 ; then
4151 enable_gnu_unique_object=yes
4154 if test x$enable_gnu_unique_object = xyes; then
4155 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4156 [Define if your assembler supports @gnu_unique_object.])
4159 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4160 [gcc_cv_as_line_zero],
4161 [gcc_cv_as_line_zero=no
4162 if test $in_tree_gas = yes; then
4163 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4164 elif test "x$gcc_cv_as" != x; then
4165 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4166 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4167 test "x`cat conftest.out`" = x
4169 gcc_cv_as_line_zero=yes
4171 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4172 cat conftest.s >&AS_MESSAGE_LOG_FD
4173 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4174 cat conftest.out >&AS_MESSAGE_LOG_FD
4176 rm -f conftest.o conftest.s conftest.out
4178 if test "x$gcc_cv_as_line_zero" = xyes; then
4179 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4180 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4183 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4184 gcc_cv_ld_eh_frame_hdr=no
4185 if test $in_tree_ld = yes ; then
4186 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4187 && test $in_tree_ld_is_elf = yes; then
4188 gcc_cv_ld_eh_frame_hdr=yes
4190 elif test x$gcc_cv_ld != x; then
4191 if echo "$ld_ver" | grep GNU > /dev/null; then
4192 # Check if linker supports --eh-frame-hdr option
4193 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4194 gcc_cv_ld_eh_frame_hdr=yes
4199 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4200 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4201 gcc_cv_ld_eh_frame_hdr=yes
4207 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4208 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4209 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4210 [Define if your linker supports .eh_frame_hdr.])
4212 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4214 AC_MSG_CHECKING(linker position independent executable support)
4216 if test $in_tree_ld = yes ; then
4217 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4218 && test $in_tree_ld_is_elf = yes; then
4221 elif test x$gcc_cv_ld != x; then
4222 # Check if linker supports -pie option
4223 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4227 if test x"$gcc_cv_ld_pie" = xyes; then
4228 AC_DEFINE(HAVE_LD_PIE, 1,
4229 [Define if your linker supports -pie option.])
4231 AC_MSG_RESULT($gcc_cv_ld_pie)
4233 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4234 gcc_cv_ld_eh_gc_sections=no
4235 if test $in_tree_ld = yes ; then
4236 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4237 && test $in_tree_ld_is_elf = yes; then
4238 gcc_cv_ld_eh_gc_sections=yes
4240 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4241 cat > conftest.s <<EOF
4244 .type _start, @function
4247 .size _start, .-_start
4248 .section .text.foo,"ax",@progbits
4249 .type foo, @function
4253 .section .gcc_except_table.foo,"a",@progbits
4256 .section .eh_frame,"a",@progbits
4259 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4260 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4261 | grep "gc-sections option ignored" > /dev/null; then
4262 gcc_cv_ld_eh_gc_sections=no
4263 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4264 | grep gcc_except_table > /dev/null; then
4265 gcc_cv_ld_eh_gc_sections=yes
4266 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4267 if test x$gcc_cv_as_comdat_group != xyes; then
4268 gcc_cv_ld_eh_gc_sections=no
4269 cat > conftest.s <<EOF
4272 .type _start, @function
4275 .size _start, .-_start
4276 .section .gnu.linkonce.t.foo,"ax",@progbits
4277 .type foo, @function
4281 .section .gcc_except_table.foo,"a",@progbits
4284 .section .eh_frame,"a",@progbits
4287 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4288 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4289 | grep "gc-sections option ignored" > /dev/null; then
4290 gcc_cv_ld_eh_gc_sections=no
4291 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4292 | grep gcc_except_table > /dev/null; then
4293 gcc_cv_ld_eh_gc_sections=yes
4299 rm -f conftest.s conftest.o conftest
4303 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4304 gcc_cv_ld_eh_gc_sections=no
4307 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4308 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4309 [Define if your linker supports garbage collection of
4310 sections in presence of EH frames.])
4312 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4314 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4315 gcc_cv_ld_eh_gc_sections_bug=no
4316 if test $in_tree_ld = yes ; then
4317 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4318 && test $in_tree_ld_is_elf = yes; then
4319 gcc_cv_ld_eh_gc_sections_bug=yes
4321 elif test x$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
4322 gcc_cv_ld_eh_gc_sections_bug=yes
4323 cat > conftest.s <<EOF
4326 .type _start, @function
4329 .size _start, .-_start
4330 .section .text.startup.foo,"ax",@progbits
4331 .type foo, @function
4335 .section .gcc_except_table.foo,"a",@progbits
4338 .section .eh_frame,"a",@progbits
4341 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4342 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4343 | grep "gc-sections option ignored" > /dev/null; then
4345 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4346 | grep gcc_except_table > /dev/null; then
4347 gcc_cv_ld_eh_gc_sections_bug=no
4350 rm -f conftest.s conftest.o conftest
4352 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4353 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4354 [Define if your linker has buggy garbage collection of
4355 sections support when .text.startup.foo like sections are used.])
4357 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4363 AC_CACHE_CHECK(linker --as-needed support,
4364 gcc_cv_ld_as_needed,
4365 [gcc_cv_ld_as_needed=no
4366 if test $in_tree_ld = yes ; then
4367 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4368 && test $in_tree_ld_is_elf = yes; then
4369 gcc_cv_ld_as_needed=yes
4371 elif test x$gcc_cv_ld != x; then
4372 # Check if linker supports --as-needed and --no-as-needed options
4373 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4374 gcc_cv_ld_as_needed=yes
4378 if test x"$gcc_cv_ld_as_needed" = xyes; then
4379 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4380 [Define if your linker supports --as-needed and --no-as-needed options.])
4383 case "$target:$tm_file" in
4384 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4385 AC_CACHE_CHECK(linker support for omitting dot symbols,
4386 gcc_cv_ld_no_dot_syms,
4387 [gcc_cv_ld_no_dot_syms=no
4388 if test $in_tree_ld = yes ; then
4389 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4390 gcc_cv_ld_no_dot_syms=yes
4392 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4393 cat > conftest1.s <<EOF
4397 cat > conftest2.s <<EOF
4398 .section ".opd","aw"
4403 .quad .LEfoo,.TOC.@tocbase,0
4409 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4410 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4411 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4412 gcc_cv_ld_no_dot_syms=yes
4414 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4417 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4418 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4419 [Define if your PowerPC64 linker only needs function descriptor syms.])
4422 AC_CACHE_CHECK(linker large toc support,
4423 gcc_cv_ld_large_toc,
4424 [gcc_cv_ld_large_toc=no
4425 if test $in_tree_ld = yes ; then
4426 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4427 gcc_cv_ld_large_toc=yes
4429 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4430 cat > conftest.s <<EOF
4431 .section ".tbss","awT",@nobits
4437 addis 9,13,ie0@got@tprel@ha
4438 ld 9,ie0@got@tprel@l(9)
4440 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4441 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4442 gcc_cv_ld_large_toc=yes
4444 rm -f conftest conftest.o conftest.s
4447 if test x"$gcc_cv_ld_large_toc" = xyes; then
4448 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4449 [Define if your PowerPC64 linker supports a large TOC.])
4454 AC_CACHE_CHECK(linker --build-id support,
4456 [gcc_cv_ld_buildid=no
4457 if test $in_tree_ld = yes ; then
4458 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4459 "$gcc_cv_gld_minor_version" -ge 18 -o \
4460 "$gcc_cv_gld_major_version" -gt 2 \
4461 && test $in_tree_ld_is_elf = yes; then
4462 gcc_cv_ld_buildid=yes
4464 elif test x$gcc_cv_ld != x; then
4465 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4466 gcc_cv_ld_buildid=yes
4469 if test x"$gcc_cv_ld_buildid" = xyes; then
4470 AC_DEFINE(HAVE_LD_BUILDID, 1,
4471 [Define if your linker supports --build-id.])
4474 AC_ARG_ENABLE(linker-build-id,
4475 [AS_HELP_STRING([--enable-linker-build-id],
4476 [compiler will always pass --build-id to linker])],
4478 enable_linker_build_id=no)
4480 if test x"$enable_linker_build_id" = xyes; then
4481 if test x"$gcc_cv_ld_buildid" = xyes; then
4482 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4483 [Define if gcc should always pass --build-id to linker.])
4485 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4489 # In binutils 2.21, GNU ld gained support for new emulations fully
4490 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4491 AC_CACHE_CHECK(linker *_sol2 emulation support,
4492 gcc_cv_ld_sol2_emulation,
4493 [gcc_cv_ld_sol2_emulation=no
4494 if test $in_tree_ld = yes ; then
4495 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4496 "$gcc_cv_gld_minor_version" -ge 21 -o \
4497 "$gcc_cv_gld_major_version" -gt 2 \
4498 && test $in_tree_ld_is_elf = yes; then
4499 gcc_cv_ld_sol2_emulation=yes
4501 elif test x$gcc_cv_ld != x; then
4502 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4503 grep _sol2 > /dev/null; then
4504 gcc_cv_ld_sol2_emulation=yes
4507 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4508 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4509 [Define if your linker supports the *_sol2 emulations.])
4512 AC_CACHE_CHECK(linker --sysroot support,
4514 [gcc_cv_ld_sysroot=no
4515 if test $in_tree_ld = yes ; then
4516 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4517 gcc_cv_ld_sysroot=yes
4519 elif test x$gcc_cv_ld != x; then
4520 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4521 gcc_cv_ld_sysroot=yes
4524 if test x"$gcc_cv_ld_sysroot" = xyes; then
4525 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4526 [Define if your linker supports --sysroot.])
4529 if test x$with_sysroot = x && test x$host = x$target \
4530 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4531 && test "$prefix" != "NONE"; then
4532 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4533 [Define to PREFIX/include if cpp should also search that directory.])
4536 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4537 if test "x$with_headers" != x; then
4538 target_header_dir=$with_headers
4539 elif test "x$with_sysroot" = x; then
4540 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4541 elif test "x$with_build_sysroot" != "x"; then
4542 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4543 elif test "x$with_sysroot" = xyes; then
4544 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4546 target_header_dir="${with_sysroot}${native_system_header_dir}"
4549 target_header_dir=${native_system_header_dir}
4552 # Test for stack protector support in target C library.
4553 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4554 gcc_cv_libc_provides_ssp,
4555 [gcc_cv_libc_provides_ssp=no
4557 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4558 [# glibc 2.4 and later provides __stack_chk_fail and
4559 # either __stack_chk_guard, or TLS access to stack guard canary.
4560 if test -f $target_header_dir/features.h \
4561 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4562 $target_header_dir/features.h > /dev/null; then
4563 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4564 $target_header_dir/features.h > /dev/null; then
4565 gcc_cv_libc_provides_ssp=yes
4566 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4567 $target_header_dir/features.h > /dev/null \
4568 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4569 $target_header_dir/features.h > /dev/null; then
4570 gcc_cv_libc_provides_ssp=yes
4571 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4572 $target_header_dir/features.h > /dev/null && \
4573 test -f $target_header_dir/bits/uClibc_config.h && \
4574 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4575 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4576 gcc_cv_libc_provides_ssp=yes
4581 # Avoid complicated tests (see
4582 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4583 # simply assert that glibc does provide this, which is true for all
4584 # realistically usable GNU/Hurd configurations.
4585 gcc_cv_libc_provides_ssp=yes;;
4586 *-*-darwin* | *-*-freebsd*)
4587 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4588 [echo "no __stack_chk_fail on this target"])
4590 *) gcc_cv_libc_provides_ssp=no ;;
4593 if test x$gcc_cv_libc_provides_ssp = xyes; then
4594 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4595 [Define if your target C library provides stack protector support])
4598 # Test for <sys/sdt.h> on the target.
4599 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4600 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4602 if test -f $target_header_dir/sys/sdt.h; then
4604 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4605 [Define if your target C library provides sys/sdt.h])
4607 AC_MSG_RESULT($have_sys_sdt_h)
4609 # Check if TFmode long double should be used by default or not.
4610 # Some glibc targets used DFmode long double, but with glibc 2.4
4611 # and later they can use TFmode.
4613 powerpc*-*-linux* | \
4617 AC_ARG_WITH(long-double-128,
4618 [AS_HELP_STRING([--with-long-double-128],
4619 [use 128-bit long double by default])],
4620 gcc_cv_target_ldbl128="$with_long_double_128",
4621 [[gcc_cv_target_ldbl128=no
4622 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4623 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4624 && gcc_cv_target_ldbl128=yes
4628 if test x$gcc_cv_target_ldbl128 = xyes; then
4629 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4630 [Define if TFmode long double should be the default])
4633 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4634 gcc_cv_target_dl_iterate_phdr=unknown
4637 # <link.h> needs both a dl_iterate_phdr declaration and support for
4638 # compilation with largefile support.
4639 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4640 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4641 gcc_cv_target_dl_iterate_phdr=yes
4643 gcc_cv_target_dl_iterate_phdr=no
4647 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4648 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4649 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4650 [Define if your target C library provides the `dl_iterate_phdr' function.])
4652 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4654 # Find out what GC implementation we want, or may, use.
4656 [AS_HELP_STRING([--with-gc={page,zone}],
4657 [choose the garbage collection mechanism to use
4658 with the compiler])],
4665 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4668 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4673 echo "Using $GGC for garbage collection."
4675 # Libraries to use on the host. This will normally be set by the top
4676 # level Makefile. Here we simply capture the value for our Makefile.
4677 if test -z "${HOST_LIBS+set}"; then
4682 # Use the system's zlib library.
4684 zlibinc="-I\$(srcdir)/../zlib"
4685 AC_ARG_WITH(system-zlib,
4686 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4693 dnl Very limited version of automake's enable-maintainer-mode
4695 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4696 dnl maintainer-mode is disabled by default
4697 AC_ARG_ENABLE(maintainer-mode,
4698 [AS_HELP_STRING([--enable-maintainer-mode],
4699 [enable make rules and dependencies not useful
4700 (and sometimes confusing) to the casual installer])],
4701 maintainer_mode=$enableval,
4704 AC_MSG_RESULT($maintainer_mode)
4706 if test "$maintainer_mode" = "yes"; then
4717 # Make empty files to contain the specs and options for each language.
4718 # Then add #include lines to for a compiler that has specs and/or options.
4724 # These (without "all_") are set in each config-lang.in.
4725 # `language' must be a single word so is spelled singularly.
4728 all_outputs='Makefile'
4729 # List of language makefile fragments.
4731 # Additional files for gengtype
4732 all_gtfiles="$target_gtfiles"
4734 # These are the languages that are set in --enable-languages,
4735 # and are available in the GCC tree.
4736 all_selected_languages=
4738 # Add the language fragments.
4739 # Languages are added via two mechanisms. Some information must be
4740 # recorded in makefile variables, these are defined in config-lang.in.
4741 # We accumulate them and plug them into the main Makefile.
4742 # The other mechanism is a set of hooks for each of the main targets
4743 # like `clean', `install', etc.
4745 language_hooks="Make-hooks"
4747 for lang in ${srcdir}/*/config-lang.in
4750 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4752 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4753 if test "x$lang_alias" = x
4755 echo "$lang doesn't set \$language." 1>&2
4758 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4759 subdirs="$subdirs $subdir"
4761 # $gcc_subdir is where the gcc integration files are to be found
4762 # for a language, both for internal compiler purposes (compiler
4763 # sources implementing front-end to GCC tree converters), and for
4764 # build infrastructure purposes (Make-lang.in, etc.)
4766 # This will be <subdir> (relative to $srcdir) if a line like
4767 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4768 # is found in <langdir>/config-lang.in, and will remain <langdir>
4771 # Except for the language alias (fetched above), the regular
4772 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4773 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4774 # only this and the language alias.
4776 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4777 if [ "$gcc_subdir" = "" ]; then
4778 gcc_subdir="$subdir"
4781 case ",$enable_languages," in
4783 all_selected_languages="$all_selected_languages $lang_alias"
4784 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4785 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4797 . ${srcdir}/$gcc_subdir/config-lang.in
4798 if test "x$language" = x
4800 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4805 case ",$enable_languages," in
4808 for i in $subdir_requires; do
4809 test -f "${srcdir}/$i/config-lang.in" && continue
4817 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4818 if test -f $srcdir/$gcc_subdir/lang.opt; then
4819 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4820 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4822 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4823 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4825 all_languages="$all_languages $language"
4826 all_compilers="$all_compilers $compilers"
4827 all_outputs="$all_outputs $outputs"
4828 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4829 case ",$enable_languages," in
4831 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4833 AC_SUBST(enable_lto)
4839 # Pick up gtfiles for c
4841 . ${srcdir}/c-config-lang.in
4842 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4845 for language in $all_selected_languages
4847 check_languages="$check_languages check-$language"
4850 # We link each language in with a set of hooks, reached indirectly via
4851 # lang.${target}. Only do so for selected languages.
4855 target_list="all.cross start.encap rest.encap tags \
4856 install-common install-man install-info install-pdf install-html dvi \
4857 pdf html uninstall info man srcextra srcman srcinfo \
4858 mostlyclean clean distclean maintainer-clean install-plugin"
4860 for t in $target_list
4863 for lang in $all_selected_languages
4867 echo "lang.$t: $x" >> Make-hooks
4871 # Option include files
4874 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4875 option_includes="option-includes.mk"
4876 AC_SUBST_FILE(option_includes)
4884 echo "dir ." > .gdbinit
4885 echo "dir ${srcdir}" >> .gdbinit
4886 if test x$gdb_needs_out_file_path = xyes
4888 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4890 if test "x$subdirs" != x; then
4893 echo "dir ${srcdir}/$s" >> .gdbinit
4896 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4898 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4899 AC_SUBST(gcc_tooldir)
4902 # Find a directory in which to install a shared libgcc.
4904 AC_ARG_ENABLE(version-specific-runtime-libs,
4905 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4906 [specify that runtime libraries should be
4907 installed in a compiler-specific directory])])
4909 # Substitute configuration variables
4912 AC_SUBST(all_compilers)
4913 AC_SUBST(all_gtfiles)
4914 AC_SUBST(all_lang_makefrags)
4915 AC_SUBST(all_languages)
4916 AC_SUBST(all_selected_languages)
4917 AC_SUBST(build_exeext)
4918 AC_SUBST(build_install_headers_dir)
4919 AC_SUBST(build_xm_file_list)
4920 AC_SUBST(build_xm_include_list)
4921 AC_SUBST(build_xm_defines)
4922 AC_SUBST(build_file_translate)
4923 AC_SUBST(check_languages)
4924 AC_SUBST(cpp_install_dir)
4925 AC_SUBST(xmake_file)
4926 AC_SUBST(tmake_file)
4927 AC_SUBST(TM_ENDIAN_CONFIG)
4928 AC_SUBST(TM_MULTILIB_CONFIG)
4929 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4930 AC_SUBST(extra_gcc_objs)
4931 AC_SUBST(user_headers_inc_next_pre)
4932 AC_SUBST(user_headers_inc_next_post)
4933 AC_SUBST(extra_headers_list)
4934 AC_SUBST(extra_objs)
4935 AC_SUBST(extra_passes)
4936 AC_SUBST(extra_programs)
4937 AC_SUBST(float_h_file)
4938 AC_SUBST(gcc_config_arguments)
4939 AC_SUBST(gcc_gxx_include_dir)
4940 AC_SUBST(host_exeext)
4941 AC_SUBST(host_xm_file_list)
4942 AC_SUBST(host_xm_include_list)
4943 AC_SUBST(host_xm_defines)
4944 AC_SUBST(out_host_hook_obj)
4946 AC_SUBST(lang_opt_files)
4947 AC_SUBST(lang_specs_files)
4948 AC_SUBST(lang_tree_files)
4949 AC_SUBST(local_prefix)
4951 AC_SUBST(objc_boehm_gc)
4953 AC_SUBST(out_object_file)
4954 AC_SUBST(common_out_file)
4955 AC_SUBST(common_out_object_file)
4956 AC_SUBST(tm_file_list)
4957 AC_SUBST(tm_include_list)
4958 AC_SUBST(tm_defines)
4959 AC_SUBST(tm_p_file_list)
4960 AC_SUBST(tm_p_include_list)
4961 AC_SUBST(xm_file_list)
4962 AC_SUBST(xm_include_list)
4963 AC_SUBST(xm_defines)
4964 AC_SUBST(use_gcc_stdint)
4965 AC_SUBST(c_target_objs)
4966 AC_SUBST(cxx_target_objs)
4967 AC_SUBST(fortran_target_objs)
4968 AC_SUBST(target_cpu_default)
4970 AC_SUBST_FILE(language_hooks)
4973 if test x${build} = x${host} ; then
4974 if test x${host} = x${target} ; then
4975 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4977 echo "Links are now set up to build a cross-compiler" 1>&2
4978 echo " from ${host} to ${target}." 1>&2
4981 if test x${host} = x${target} ; then
4982 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4983 echo " for ${target}." 1>&2
4985 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4986 echo " from ${host} to ${target}." 1>&2
4990 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4991 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4993 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4994 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4996 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4997 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4998 if test "x${CLOOGLIBS}" != "x" ; then
4999 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5002 # Check for plugin support
5003 AC_ARG_ENABLE(plugin,
5004 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5005 enable_plugin=$enableval,
5006 enable_plugin=yes; default_plugin=yes)
5012 if test x$build = x$host; then
5013 export_sym_check="nm${exeext} -g"
5014 elif test x$host = x$target; then
5015 export_sym_check="$gcc_cv_nm -g"
5021 if test x$build = x$host; then
5022 export_sym_check="objdump${exeext} -T"
5023 elif test x$host = x$target; then
5024 export_sym_check="$gcc_cv_objdump -T"
5031 if test x"$enable_plugin" = x"yes"; then
5033 AC_MSG_CHECKING([for exported symbols])
5034 if test "x$export_sym_check" != x; then
5035 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5036 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5037 if $export_sym_check conftest | grep foobar > /dev/null; then
5038 : # No need to use a flag
5039 AC_MSG_RESULT([yes])
5041 AC_MSG_RESULT([yes])
5042 AC_MSG_CHECKING([for -rdynamic])
5043 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5044 if $export_sym_check conftest | grep foobar > /dev/null; then
5046 pluginlibs="-rdynamic"
5051 AC_MSG_RESULT([$plugin_rdynamic])
5054 AC_MSG_RESULT([unable to check])
5059 AC_SEARCH_LIBS([dlopen], [dl])
5060 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5061 pluginlibs="$pluginlibs -ldl"
5065 # Check that we can build shared objects with -fPIC -shared
5066 saved_LDFLAGS="$LDFLAGS"
5067 saved_CFLAGS="$CFLAGS"
5070 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5071 CFLAGS="$CFLAGS -fPIC"
5072 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5075 CFLAGS="$CFLAGS -fPIC"
5076 LDFLAGS="$LDFLAGS -fPIC -shared"
5079 AC_MSG_CHECKING([for -fPIC -shared])
5081 [extern int X;],[return X == 0;],
5082 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5083 [AC_MSG_RESULT([no]); have_pic_shared=no])
5084 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5088 LDFLAGS="$saved_LDFLAGS"
5089 CFLAGS="$saved_CFLAGS"
5091 # If plugin support had been requested but not available, fail.
5092 if test x"$enable_plugin" = x"no" ; then
5093 if test x"$default_plugin" != x"yes"; then
5095 Building GCC with plugin support requires a host that supports
5096 -fPIC, -shared, -ldl and -rdynamic.])
5101 AC_SUBST(pluginlibs)
5102 AC_SUBST(enable_plugin)
5103 if test x"$enable_plugin" = x"yes"; then
5104 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5108 AC_ARG_ENABLE(libquadmath-support,
5109 [AS_HELP_STRING([--disable-libquadmath-support],
5110 [disable libquadmath support for Fortran])],
5111 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5112 ENABLE_LIBQUADMATH_SUPPORT=yes)
5113 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5114 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5115 [Define to 1 to enable libquadmath support])
5119 # Specify what hash style to use by default.
5120 AC_ARG_WITH([linker-hash-style],
5121 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5122 [specify the linker hash style])],
5123 [case x"$withval" in
5125 LINKER_HASH_STYLE=sysv
5128 LINKER_HASH_STYLE=gnu
5131 LINKER_HASH_STYLE=both
5134 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5137 [LINKER_HASH_STYLE=''])
5138 if test x"${LINKER_HASH_STYLE}" != x; then
5139 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5140 [The linker hash style])
5143 # Configure the subdirectories
5144 # AC_CONFIG_SUBDIRS($subdirs)
5146 # Create the Makefile
5147 # and configure language subdirectories
5148 AC_CONFIG_FILES($all_outputs)
5150 AC_CONFIG_COMMANDS([default],
5152 case ${CONFIG_HEADERS} in
5153 *auto-host.h:config.in*)
5156 # Make sure all the subdirs exist.
5157 for d in $subdirs doc build common c-family
5159 test -d $d || mkdir $d
5162 [subdirs='$subdirs'])