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 # -------------------------
301 # Check C compiler features
302 # -------------------------
304 AC_USE_SYSTEM_EXTENSIONS
310 # sizeof(char) is 1 by definition.
311 AC_CHECK_SIZEOF(void *)
312 AC_CHECK_SIZEOF(short)
314 AC_CHECK_SIZEOF(long)
315 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
316 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
319 # ---------------------
320 # Warnings and checking
321 # ---------------------
323 # Check $CC warning features (if it's GCC).
324 # We want to use -pedantic, but we don't want warnings about
328 # So, we only use -pedantic if we can disable those warnings.
330 ACX_PROG_CC_WARNING_OPTS(
331 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
339 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
340 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
341 [-Wno-overlength-strings])), [strict_warn])
342 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
344 # The above macros do nothing if the compiler is not GCC. However, the
345 # Makefile has more goo to add other flags, so these variables are used
346 # to enable warnings only for GCC.
349 if test "x$GCC" = "xyes"; then
350 warn_cflags='$(GCC_WARN_CFLAGS)'
351 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
353 AC_SUBST(warn_cflags)
354 AC_SUBST(warn_cxxflags)
356 # Enable expensive internal checks
358 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
362 AC_ARG_ENABLE(checking,
363 [AS_HELP_STRING([[--enable-checking[=LIST]]],
364 [enable expensive run-time checks. With LIST,
365 enable only specific categories of checks.
366 Categories are: yes,no,all,none,release.
367 Flags are: assert,df,fold,gc,gcac,gimple,misc,
368 rtlflag,rtl,runtime,tree,valgrind,types])],
369 [ac_checking_flags="${enableval}"],[
370 # Determine the default checks.
371 if test x$is_release = x ; then
372 ac_checking_flags=yes
374 ac_checking_flags=release
376 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
377 for check in release $ac_checking_flags
380 # these set all the flags to specific states
381 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
382 ac_fold_checking= ; ac_gc_checking=1 ;
383 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
384 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
385 ac_tree_checking=1 ; ac_valgrind_checking= ;
386 ac_types_checking=1 ;;
387 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
388 ac_fold_checking= ; ac_gc_checking= ;
389 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
390 ac_rtlflag_checking= ; ac_runtime_checking= ;
391 ac_tree_checking= ; ac_valgrind_checking= ;
392 ac_types_checking= ;;
393 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
394 ac_fold_checking=1 ; ac_gc_checking=1 ;
395 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 # these enable particular checks
406 assert) ac_assert_checking=1 ;;
407 df) ac_df_checking=1 ;;
408 fold) ac_fold_checking=1 ;;
409 gc) ac_gc_checking=1 ;;
410 gcac) ac_gc_always_collect=1 ;;
411 gimple) ac_gimple_checking=1 ;;
412 misc) ac_checking=1 ;;
413 rtl) ac_rtl_checking=1 ;;
414 rtlflag) ac_rtlflag_checking=1 ;;
415 runtime) ac_runtime_checking=1 ;;
416 tree) ac_tree_checking=1 ;;
417 types) ac_types_checking=1 ;;
418 valgrind) ac_valgrind_checking=1 ;;
419 *) AC_MSG_ERROR(unknown check category $check) ;;
425 if test x$ac_checking != x ; then
426 AC_DEFINE(ENABLE_CHECKING, 1,
427 [Define if you want more run-time sanity checks. This one gets a grab
428 bag of miscellaneous but relatively cheap checks.])
429 nocommon_flag=-fno-common
431 AC_SUBST(nocommon_flag)
432 if test x$ac_df_checking != x ; then
433 AC_DEFINE(ENABLE_DF_CHECKING, 1,
434 [Define if you want more run-time sanity checks for dataflow.])
436 if test x$ac_assert_checking != x ; then
437 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
438 [Define if you want assertions enabled. This is a cheap check.])
440 if test x$ac_gimple_checking != x ; then
441 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
442 [Define if you want operations on GIMPLE (the basic data structure of
443 the high-level optimizers) to be checked for dynamic type safety at
444 runtime. This is moderately expensive.])
446 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
447 if test x$ac_runtime_checking != x ; then
448 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
449 [Define if you want runtime assertions enabled. This is a cheap check.])
451 if test x$ac_tree_checking != x ; then
452 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
453 [Define if you want all operations on trees (the basic data
454 structure of the front ends) to be checked for dynamic type safety
455 at runtime. This is moderately expensive. The tree browser debugging
456 routines will also be enabled by this option.
458 TREEBROWSER=tree-browser.o
460 if test x$ac_types_checking != x ; then
461 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
462 [Define if you want all gimple types to be verified after gimplifiation.
466 AC_SUBST(TREEBROWSER)
467 if test x$ac_rtl_checking != x ; then
468 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
469 [Define if you want all operations on RTL (the basic data structure
470 of the optimizer and back end) to be checked for dynamic type safety
471 at runtime. This is quite expensive.])
473 if test x$ac_rtlflag_checking != x ; then
474 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
475 [Define if you want RTL flag accesses to be checked against the RTL
476 codes that are supported for each access macro. This is relatively
479 if test x$ac_gc_checking != x ; then
480 AC_DEFINE(ENABLE_GC_CHECKING, 1,
481 [Define if you want the garbage collector to do object poisoning and
482 other memory allocation checks. This is quite expensive.])
484 if test x$ac_gc_always_collect != x ; then
485 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
486 [Define if you want the garbage collector to operate in maximally
487 paranoid mode, validating the entire heap and collecting garbage at
488 every opportunity. This is extremely expensive.])
490 if test x$ac_fold_checking != x ; then
491 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
492 [Define if you want fold checked that it never destructs its argument.
493 This is quite expensive.])
495 valgrind_path_defines=
498 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
499 dnl # an if statement. This was the source of very frustrating bugs
500 dnl # in converting to autoconf 2.5x!
501 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
503 if test x$ac_valgrind_checking != x ; then
504 # It is certainly possible that there's valgrind but no valgrind.h.
505 # GCC relies on making annotations so we must have both.
506 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
507 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
508 [[#include <valgrind/memcheck.h>
509 #ifndef VALGRIND_DISCARD
510 #error VALGRIND_DISCARD not defined
512 [gcc_cv_header_valgrind_memcheck_h=yes],
513 [gcc_cv_header_valgrind_memcheck_h=no])
514 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
515 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
516 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
517 [[#include <memcheck.h>
518 #ifndef VALGRIND_DISCARD
519 #error VALGRIND_DISCARD not defined
521 [gcc_cv_header_memcheck_h=yes],
522 [gcc_cv_header_memcheck_h=no])
523 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
524 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
525 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
526 if test "x$valgrind_path" = "x" \
527 || (test $have_valgrind_h = no \
528 && test $gcc_cv_header_memcheck_h = no \
529 && test $gcc_cv_header_valgrind_memcheck_h = no); then
530 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
532 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
533 valgrind_command="$valgrind_path -q"
534 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
535 [Define if you want to run subprograms and generated programs
536 through valgrind (a memory checker). This is extremely expensive.])
537 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
538 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
539 [Define if valgrind's valgrind/memcheck.h header is installed.])
541 if test $gcc_cv_header_memcheck_h = yes; then
542 AC_DEFINE(HAVE_MEMCHECK_H, 1,
543 [Define if valgrind's memcheck.h header is installed.])
546 AC_SUBST(valgrind_path_defines)
547 AC_SUBST(valgrind_command)
549 # Enable code coverage collection
550 AC_ARG_ENABLE(coverage,
551 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
552 [enable compiler's code coverage collection.
553 Use to measure compiler performance and locate
554 unused parts of the compiler. With LEVEL, specify
555 optimization. Values are opt, noopt,
557 [case "${enableval}" in
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
562 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
565 # a.k.a. --disable-coverage
569 AC_MSG_ERROR(unknown coverage setting $enableval)
573 AC_SUBST(coverage_flags)
575 AC_ARG_ENABLE(gather-detailed-mem-stats,
576 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
577 [enable detailed memory allocation stats gathering])], [],
578 [enable_gather_detailed_mem_stats=no])
579 if test x$enable_gather_detailed_mem_stats = xyes ; then
580 AC_DEFINE(GATHER_STATISTICS, 1,
581 [Define to enable detailed memory allocation stats gathering.])
584 # -------------------------------
585 # Miscenalleous configure options
586 # -------------------------------
588 # See if we are building gcc with C++.
589 AC_ARG_ENABLE(build-with-cxx,
590 [AS_HELP_STRING([--enable-build-with-cxx],
591 [build with C++ compiler instead of C compiler])],
592 ENABLE_BUILD_WITH_CXX=$enableval,
593 ENABLE_BUILD_WITH_CXX=no)
594 AC_SUBST(ENABLE_BUILD_WITH_CXX)
595 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
596 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
597 [Define if building with C++.])
602 [AS_HELP_STRING([--with-stabs],
603 [arrange to use stabs instead of host debug format])],
607 # Determine whether or not multilibs are enabled.
608 AC_ARG_ENABLE(multilib,
609 [AS_HELP_STRING([--enable-multilib],
610 [enable library support for multiple ABIs])],
611 [], [enable_multilib=yes])
612 AC_SUBST(enable_multilib)
614 # Enable __cxa_atexit for C++.
615 AC_ARG_ENABLE(__cxa_atexit,
616 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
619 # Enable C extension for decimal float if target supports it.
620 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
622 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
623 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
624 [Define to 1 to enable decimal float extension to C.])
626 # Use default_decimal_float for dependency.
627 enable_decimal_float=$default_decimal_float
629 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
630 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
631 [Define to 1 to specify that we are using the BID decimal floating
632 point format instead of DPD])
634 # Enable C extension for fixed-point arithmetic.
635 AC_ARG_ENABLE(fixed-point,
636 [AS_HELP_STRING([--enable-fixed-point],
637 [enable fixed-point arithmetic extension to C])],
644 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
645 enable_fixed_point=no
648 enable_fixed_point=yes
653 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
654 enable_fixed_point=no
658 AC_SUBST(enable_fixed_point)
660 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
661 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
662 [Define to 1 to enable fixed-point arithmetic extension to C.])
665 # Pass with no value to take the default
666 # Pass with a value to specify a thread package
667 AC_ARG_ENABLE(threads,
668 [AS_HELP_STRING([[--enable-threads[=LIB]]],
669 [enable thread usage for target GCC,
670 using LIB thread package])],,
674 [AS_HELP_STRING([--enable-tls],
675 [enable or disable generation of tls code
676 overriding the assembler check for tls support])],
680 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
681 Valid choices are 'yes' and 'no'.]) ;;
685 AC_ARG_ENABLE(objc-gc,
686 [AS_HELP_STRING([--enable-objc-gc],
687 [enable the use of Boehm's garbage collector with
688 the GNU Objective-C runtime])],
689 if test x$enable_objc_gc = xno; then
697 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
698 dwarf2="$with_dwarf2",
701 AC_ARG_ENABLE(shared,
702 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
704 case $enable_shared in
708 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
709 for pkg in $enableval; do
710 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
717 ], [enable_shared=yes])
718 AC_SUBST(enable_shared)
720 AC_ARG_WITH(build-sysroot,
721 [AS_HELP_STRING([--with-build-sysroot=sysroot],
722 [use sysroot as the system root during the build])])
725 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
726 [search for usr/lib, usr/include, et al, within DIR])],
728 case ${with_sysroot} in
729 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
730 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
733 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
734 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
736 if test "x$prefix" = xNONE; then
737 test_prefix=/usr/local
741 if test "x$exec_prefix" = xNONE; then
742 test_exec_prefix=$test_prefix
744 test_exec_prefix=$exec_prefix
746 case ${TARGET_SYSTEM_ROOT} in
747 "${test_prefix}"|"${test_prefix}/"*|\
748 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
749 '${prefix}'|'${prefix}/'*|\
750 '${exec_prefix}'|'${exec_prefix}/'*)
751 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
752 TARGET_SYSTEM_ROOT_DEFINE="$t"
757 TARGET_SYSTEM_ROOT_DEFINE=
758 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
760 AC_SUBST(TARGET_SYSTEM_ROOT)
761 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
762 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
765 [AS_HELP_STRING([--with-specs=SPECS],
766 [add SPECS to driver command-line processing])],
767 [CONFIGURE_SPECS=$withval],
770 AC_SUBST(CONFIGURE_SPECS)
772 ACX_PKGVERSION([GCC])
773 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
775 # Sanity check enable_languages in case someone does not run the toplevel
776 # configure # script.
777 AC_ARG_ENABLE(languages,
778 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
779 [case ,${enable_languages}, in
781 # go safe -- we cannot be much sure without the toplevel
783 # analysis of which target libs are present and usable
787 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
792 enable_languages=c,${enable_languages}
795 [enable_languages=c])
797 AC_ARG_WITH(multilib-list,
798 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
800 with_multilib_list=default)
802 # -------------------------
803 # Checks for other programs
804 # -------------------------
808 # Find some useful tools
810 # We need awk to create options.c and options.h.
811 # Bail out if it's missing.
813 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
821 # By default, the Darwin ranlib will not treat common symbols as
822 # definitions when building the archive table of contents. Other
823 # ranlibs do that; pass an option to the Darwin ranlib that makes
824 # it behave similarly.
830 AC_SUBST(ranlib_flags)
834 # See if cmp has --ignore-initial.
835 gcc_AC_PROG_CMP_IGNORE_INITIAL
837 # See if we have the mktemp command.
838 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
840 # See if makeinfo has been installed and is modern enough
841 # that we can use it.
842 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
843 [GNU texinfo.* \([0-9][0-9.]*\)],
844 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
845 if test $gcc_cv_prog_makeinfo_modern = no; then
847 *** Makeinfo is missing or too old.
848 *** Info documentation will not be built.])
855 # Is pod2man recent enough to regenerate manpages?
856 AC_MSG_CHECKING([for recent Pod::Man])
857 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
859 GENERATED_MANPAGES=generated-manpages
864 AC_SUBST(GENERATED_MANPAGES)
866 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
869 dnl Don't use AC_PROG_LEX; we insist on flex.
870 dnl LEXLIB is not useful in gcc.
871 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
874 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
876 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
877 # check for build == host before using them.
880 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
881 && test -d ../binutils ; then
882 NM='${objdir}/../binutils/nm-new'
884 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
888 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
889 && test -d ../binutils ; then
890 AR='${objdir}/../binutils/ar'
892 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
896 # --------------------
897 # Checks for C headers
898 # --------------------
900 # Need to reject headers which give warnings, so that the -Werror bootstrap
901 # works later. *sigh* This needs to come before all header checks.
908 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
909 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
910 sys/resource.h sys/param.h sys/times.h sys/stat.h \
911 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
913 # Check for thread headers.
914 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
915 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
917 # These tests can't be done till we know if we have limits.h.
921 # ----------------------
922 # Checks for C++ headers
923 # ----------------------
925 dnl Autoconf will give an error in the configure script if there is no
926 dnl C++ preprocessor. Hack to prevent that.
927 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
929 m4_popdef([AC_MSG_ERROR])[]dnl
933 AC_CHECK_HEADERS(unordered_map)
934 AC_CHECK_HEADERS(tr1/unordered_map)
935 AC_CHECK_HEADERS(ext/hash_map)
944 # These libraries may be used by collect2.
945 # We may need a special search path to get them linked.
946 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
948 for libs in '' -lld -lmld \
949 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
950 '-L/usr/lib/cmplrs/cc3.11 -lmld'
953 AC_TRY_LINK_FUNC(ldopen,
954 [gcc_cv_collect2_libs="$libs"; break])
957 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
958 case $gcc_cv_collect2_libs in
960 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
962 AC_SUBST(COLLECT2_LIBS)
964 # When building Ada code on Alpha, we need exc_resume which is usually in
965 # -lexc. So test for it.
968 AC_SEARCH_LIBS(exc_resume, exc)
971 AC_SUBST(GNAT_LIBEXC)
973 # Some systems put ldexp and frexp in libm instead of libc; assume
974 # they're both in the same place. jcf-dump needs them.
977 AC_SEARCH_LIBS(ldexp, m)
982 # Use <inttypes.h> only if it exists,
983 # doesn't clash with <sys/types.h>, and declares intmax_t.
984 AC_MSG_CHECKING(for inttypes.h)
985 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
986 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
987 [[#include <sys/types.h>
988 #include <inttypes.h>]],
989 [[intmax_t i = -1;]])],
990 [gcc_cv_header_inttypes_h=yes],
991 [gcc_cv_header_inttypes_h=no])])
992 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
993 if test $gcc_cv_header_inttypes_h = yes; then
994 AC_DEFINE(HAVE_INTTYPES_H, 1,
995 [Define if you have a working <inttypes.h> header file.])
998 dnl Disabled until we have a complete test for buggy enum bitfields.
999 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1001 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1002 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1003 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1004 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1005 putchar_unlocked putc_unlocked)
1006 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1007 sysconf strsignal getrusage nl_langinfo \
1008 gettimeofday mbstowcs wcswidth mmap setlocale \
1011 if test x$ac_cv_func_mbstowcs = xyes; then
1012 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1013 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1019 [gcc_cv_func_mbstowcs_works=yes],
1020 [gcc_cv_func_mbstowcs_works=no],
1021 [gcc_cv_func_mbstowcs_works=yes])])
1022 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1023 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1024 [Define this macro if mbstowcs does not crash when its
1025 first argument is NULL.])
1029 AC_CHECK_TYPE(ssize_t, int)
1030 AC_CHECK_TYPE(caddr_t, char *)
1032 gcc_AC_FUNC_MMAP_BLACKLIST
1036 # Under VMS, vfork works very differently than on Unix. The standard test
1037 # won't work, and it isn't easily adaptable. It makes more sense to
1039 ac_cv_func_vfork_works=yes
1044 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1045 # iconv() prototype.
1046 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1047 [AC_LANG_PUSH([C++])
1049 AC_LANG_POP([C++])],
1052 # Until we have in-tree GNU iconv:
1054 AC_SUBST(LIBICONV_DEP)
1060 # We will need to find libiberty.h and ansidecl.h
1061 saved_CFLAGS="$CFLAGS"
1062 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1063 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1064 strsignal strstr strverscmp \
1065 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1066 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1067 #include "ansidecl.h"
1068 #include "system.h"])
1070 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1071 #include "ansidecl.h"
1073 #ifdef HAVE_SYS_RESOURCE_H
1074 #include <sys/resource.h>
1078 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1079 #include "ansidecl.h"
1081 #ifdef HAVE_SYS_RESOURCE_H
1082 #include <sys/resource.h>
1084 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1085 [Define to `long' if <sys/resource.h> doesn't define.])])
1087 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1088 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1089 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1090 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1091 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1092 #include "ansidecl.h"
1101 gcc_AC_CHECK_DECLS(times, , ,[
1102 #include "ansidecl.h"
1104 #ifdef HAVE_SYS_TIMES_H
1105 #include <sys/times.h>
1109 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1110 #include "ansidecl.h"
1115 # More time-related stuff.
1116 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1117 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1118 #include "ansidecl.h"
1120 #ifdef HAVE_SYS_TIMES_H
1121 #include <sys/times.h>
1123 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1124 if test $ac_cv_struct_tms = yes; then
1125 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1126 [Define if <sys/times.h> defines struct tms.])
1129 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1130 # revisit after autoconf 2.50.
1131 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1132 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1133 #include "ansidecl.h"
1135 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1136 if test $gcc_cv_type_clock_t = yes; then
1137 AC_DEFINE(HAVE_CLOCK_T, 1,
1138 [Define if <time.h> defines clock_t.])
1141 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1142 CFLAGS="$saved_CFLAGS"
1144 gcc_AC_INITFINI_ARRAY
1146 # mkdir takes a single argument on some systems.
1147 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1155 # With Setjmp/Longjmp based exception handling.
1156 AC_ARG_ENABLE(sjlj-exceptions,
1157 [AS_HELP_STRING([--enable-sjlj-exceptions],
1158 [arrange to use setjmp/longjmp exception handling])],
1161 if test $enableval != yes; then
1162 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1167 force_sjlj_exceptions=yes],
1170 force_sjlj_exceptions=yes
1174 force_sjlj_exceptions=no
1177 if test $force_sjlj_exceptions = yes; then
1178 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1179 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1180 [Define 0/1 to force the choice for exception handling model.])
1183 # For platforms with the unwind ABI which includes an unwind library,
1184 # libunwind, we can choose to use the system libunwind.
1185 # config.gcc also contains tests of with_system_libunwind.
1186 GCC_CHECK_UNWIND_GETIPINFO
1188 # --------------------------------------------------------
1189 # Build, host, and target specific configuration fragments
1190 # --------------------------------------------------------
1192 # Collect build-machine-specific information.
1193 . ${srcdir}/config.build
1195 # Collect host-machine-specific information.
1196 . ${srcdir}/config.host
1200 # Collect target-machine-specific information.
1201 . ${srcdir}/config.gcc
1203 extra_objs="${host_extra_objs} ${extra_objs}"
1204 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1206 # Default the target-machine variables that were not explicitly set.
1207 if test x"$tm_file" = x
1208 then tm_file=$cpu_type/$cpu_type.h; fi
1210 if test x"$extra_headers" = x
1211 then extra_headers=; fi
1213 if test x$md_file = x
1214 then md_file=$cpu_type/$cpu_type.md; fi
1216 if test x$out_file = x
1217 then out_file=$cpu_type/$cpu_type.c; fi
1219 if test x"$tmake_file" = x
1220 then tmake_file=$cpu_type/t-$cpu_type
1223 if test x"$dwarf2" = xyes
1224 then tm_file="$tm_file tm-dwarf2.h"
1227 # Say what files are being used for the output code and MD file.
1228 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1229 echo "Using \`$srcdir/config/$md_file' as machine description file."
1231 # If any of the xm_file variables contain nonexistent files, warn
1232 # about them and drop them.
1235 for x in $build_xm_file; do
1236 if test -f $srcdir/config/$x
1238 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1244 for x in $host_xm_file; do
1245 if test -f $srcdir/config/$x
1247 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1253 for x in $xm_file; do
1254 if test -f $srcdir/config/$x
1256 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1262 for f in $tm_file; do
1265 if test $count = ax; then
1266 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1268 echo "Using the following target machine macro files:"
1269 for f in $tm_file; do
1270 echo " $srcdir/config/$f"
1274 if test x$need_64bit_hwint = xyes; then
1275 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1276 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1279 if test x$use_long_long_for_widest_fast_int = xyes; then
1280 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1281 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1282 efficiently supported by the host hardware.])
1286 for f in $host_xm_file; do
1289 if test $count = a; then
1291 elif test $count = ax; then
1292 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1294 echo "Using the following host machine macro files:"
1295 for f in $host_xm_file; do
1296 echo " $srcdir/config/$f"
1299 echo "Using ${out_host_hook_obj} for host machine hooks."
1301 if test "$host_xm_file" != "$build_xm_file"; then
1303 for f in $build_xm_file; do
1306 if test $count = a; then
1308 elif test $count = ax; then
1309 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1311 echo "Using the following build machine macro files:"
1312 for f in $build_xm_file; do
1313 echo " $srcdir/config/$f"
1320 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1321 gcc_cv_mcontext_underscores,
1323 #include <sys/cdefs.h>
1324 #include <sys/signal.h>
1325 #include <ucontext.h>
1326 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1328 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1329 if test $gcc_cv_mcontext_underscores = yes; then
1330 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1331 [mcontext_t fields start with __])
1340 # Check if a valid thread package
1341 case ${enable_threads} in
1344 target_thread_file='single'
1348 target_thread_file='single'
1350 aix | dce | lynx | mipssde | posix | posix95 | rtems | \
1351 single | tpf | vxworks | win32)
1352 target_thread_file=${enable_threads}
1355 echo "${enable_threads} is an unknown thread package" 1>&2
1360 if test x${thread_file} = x; then
1361 # No thread file set by target-specific clauses in config.gcc,
1362 # so use file chosen by default logic above
1363 thread_file=${target_thread_file}
1366 # Make gthr-default.h if we have a thread file.
1368 if test $thread_file != single; then
1369 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1370 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1371 rm -f gthr-default.h-t
1373 mv -f gthr-default.h-t gthr-default.h
1375 gthread_flags=-DHAVE_GTHR_DEFAULT
1377 AC_SUBST(gthread_flags)
1384 if test x$enable___cxa_atexit = xyes || \
1385 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1386 if test x$host = x$target; then
1388 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1389 # keyed to flag_use_cxa_atexit
1394 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1395 [echo "__cxa_atexit can't be enabled on this target"])
1399 # We can't check for __cxa_atexit when building a cross, so assume
1403 if test x$use_cxa_atexit = xyes; then
1404 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1405 [Define if you want to use __cxa_atexit, rather than atexit, to
1406 register C++ destructors for local statics and global objects.
1407 This is essential for fully standards-compliant handling of
1408 destructors, but requires __cxa_atexit in libc.])
1412 # Look for a file containing extra machine modes.
1413 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1414 extra_modes_file='$(srcdir)'/config/${extra_modes}
1415 AC_SUBST(extra_modes_file)
1416 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1417 [Define to the name of a file containing a list of extra machine modes
1418 for this architecture.])
1421 # Convert extra_options into a form suitable for Makefile use.
1424 for f in $extra_options; do
1425 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1426 all_opt_files="$all_opt_files $srcdir/config/$f"
1428 AC_SUBST(extra_opt_files)
1430 # auto-host.h is the file containing items generated by autoconf and is
1431 # the first file included by config.h.
1432 # If host=build, it is correct to have bconfig include auto-host.h
1433 # as well. If host!=build, we are in error and need to do more
1434 # work to find out the build config parameters.
1435 if test x$host = x$build
1437 build_auto=auto-host.h
1439 # We create a subdir, then run autoconf in the subdir.
1440 # To prevent recursion we set host and build for the new
1441 # invocation of configure to the build for this invocation
1448 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1449 *) realsrcdir=../${srcdir};;
1451 saved_CFLAGS="${CFLAGS}"
1452 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1453 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1454 ${realsrcdir}/configure \
1455 --enable-languages=${enable_languages-all} \
1456 --target=$target_alias --host=$build_alias --build=$build_alias
1457 CFLAGS="${saved_CFLAGS}"
1459 # We just finished tests for the build machine, so rename
1460 # the file auto-build.h in the gcc directory.
1461 mv auto-host.h ../auto-build.h
1464 build_auto=auto-build.h
1466 AC_SUBST(build_subdir)
1468 tm_file="${tm_file} defaults.h"
1469 tm_p_file="${tm_p_file} tm-preds.h"
1470 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1471 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1472 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1473 # put this back in temporarily.
1474 xm_file="auto-host.h ansidecl.h ${xm_file}"
1481 # Compile in configure arguments.
1482 if test -f configargs.h ; then
1483 # Being re-configured.
1484 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1485 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1487 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1490 # Double all backslashes and backslash all quotes to turn
1491 # gcc_config_arguments into a C string.
1492 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1493 $gcc_config_arguments
1495 gcc_config_arguments_str=`cat conftest.out`
1498 cat > configargs.h <<EOF
1499 /* Generated automatically. */
1500 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1501 static const char thread_model[] = "$thread_file";
1503 static const struct {
1504 const char *name, *value;
1505 } configure_default_options[] = $configure_default_options;
1510 gcc_BASEVER=`cat $srcdir/BASE-VER`
1511 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1512 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1513 if test -f $srcdir/REVISION ; then
1514 gcc_REVISION=`cat $srcdir/REVISION`
1518 cat > plugin-version.h <<EOF
1519 #include "configargs.h"
1521 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1522 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1523 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1524 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1526 static char basever[] = "$gcc_BASEVER";
1527 static char datestamp[] = "$gcc_DATESTAMP";
1528 static char devphase[] = "$gcc_DEVPHASE";
1529 static char revision[] = "$gcc_REVISION";
1531 /* FIXME plugins: We should make the version information more precise.
1532 One way to do is to add a checksum. */
1534 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1536 configuration_arguments};
1540 # Internationalization
1541 ZW_GNU_GETTEXT_SISTER_DIR
1543 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1544 # -liconv on the link line twice.
1545 case "$LIBINTL" in *$LIBICONV*)
1549 AC_ARG_ENABLE(secureplt,
1550 [AS_HELP_STRING([--enable-secureplt],
1551 [enable -msecure-plt by default for PowerPC])],
1554 AC_ARG_ENABLE(leading-mingw64-underscores,
1555 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1556 [enable leading underscores on 64 bit mingw targets]),
1558 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1559 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1560 [Define if we should use leading underscore on 64 bit mingw targets])])
1563 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1566 AC_ARG_ENABLE(frame-pointer,
1567 [AS_HELP_STRING([--enable-frame-pointer],
1568 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1571 linux* | darwin[[8912]]*)
1572 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1574 enable_frame_pointer=no
1577 enable_frame_pointer=yes
1582 # Windows32 Registry support for specifying GCC installation paths.
1583 AC_ARG_ENABLE(win32-registry,
1584 [AS_HELP_STRING([--disable-win32-registry],
1585 [disable lookup of installation paths in the
1586 Registry on Windows hosts])
1587 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1588 AS_HELP_STRING([--enable-win32-registry=KEY],
1589 [use KEY instead of GCC version as the last portion
1590 of the registry key])],,)
1593 win32 | pe | cygwin* | mingw32* | uwin*)
1594 if test "x$enable_win32_registry" != xno; then
1595 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1598 if test "x$enable_win32_registry" != xno; then
1599 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1600 [Define to 1 if installation paths should be looked up in the Windows
1601 Registry. Ignored on non-Windows hosts.])
1603 if test "x$enable_win32_registry" != xyes \
1604 && test "x$enable_win32_registry" != x; then
1605 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1606 [Define to be the last component of the Windows registry key under which
1607 to look for installation paths. The full key used will be
1608 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1609 The default is the GCC version number.])
1615 # Get an absolute path to the GCC top-level source directory
1616 holddir=`${PWDCMD-pwd}`
1618 topdir=`${PWDCMD-pwd}`
1621 # Conditionalize the makefile for this host machine.
1623 for f in ${host_xmake_file}
1625 if test -f ${srcdir}/config/$f
1627 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1631 # Conditionalize the makefile for this target machine.
1633 for f in ${tmake_file}
1635 if test -f ${srcdir}/config/$f
1637 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1640 tmake_file="${tmake_file_}"
1642 out_object_file=`basename $out_file .c`.o
1643 common_out_object_file=`basename $common_out_file .c`.o
1645 tm_file_list="options.h"
1646 tm_include_list="options.h insn-constants.h"
1647 for f in $tm_file; do
1650 f=`echo $f | sed 's/^..//'`
1651 tm_file_list="${tm_file_list} $f"
1652 tm_include_list="${tm_include_list} $f"
1655 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1656 tm_include_list="${tm_include_list} $f"
1659 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1660 tm_include_list="${tm_include_list} config/$f"
1665 libgcc_tm_file_list=
1666 libgcc_tm_include_list=
1667 for f in $libgcc_tm_file; do
1668 libgcc_tm_file_list="${libgcc_tm_file_list} \$(srcdir)/../libgcc/config/$f"
1669 libgcc_tm_include_list="${libgcc_tm_include_list} ../libgcc/config/$f"
1674 for f in $tm_p_file; do
1677 tm_p_file_list="${tm_p_file_list} $f"
1678 tm_p_include_list="${tm_p_include_list} $f"
1681 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1682 tm_p_include_list="${tm_p_include_list} config/$f"
1688 for f in $xm_file; do
1691 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1692 xm_include_list="${xm_include_list} $f"
1695 xm_file_list="${xm_file_list} $f"
1696 xm_include_list="${xm_include_list} $f"
1699 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1700 xm_include_list="${xm_include_list} config/$f"
1706 host_xm_include_list=
1707 for f in $host_xm_file; do
1710 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1711 host_xm_include_list="${host_xm_include_list} $f"
1714 host_xm_file_list="${host_xm_file_list} $f"
1715 host_xm_include_list="${host_xm_include_list} $f"
1718 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1719 host_xm_include_list="${host_xm_include_list} config/$f"
1725 for f in $build_xm_file; do
1728 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1729 build_xm_include_list="${build_xm_include_list} $f"
1731 auto-build.h | auto-host.h )
1732 build_xm_file_list="${build_xm_file_list} $f"
1733 build_xm_include_list="${build_xm_include_list} $f"
1736 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1737 build_xm_include_list="${build_xm_include_list} config/$f"
1742 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1743 # cross-compiler which does not use the native headers and libraries.
1744 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1745 CROSS= AC_SUBST(CROSS)
1746 ALL=all.internal AC_SUBST(ALL)
1747 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1749 if test "x$with_build_sysroot" != x; then
1750 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1752 # This value is used, even on a native system, because
1753 # CROSS_SYSTEM_HEADER_DIR is just
1754 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1755 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1758 if test x$host != x$target
1760 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1762 SYSTEM_HEADER_DIR=$build_system_header_dir
1763 case "$host","$target" in
1764 # Darwin crosses can use the host system's libraries and headers,
1765 # because of the fat library support. Of course, it must be the
1766 # same version of Darwin on both sides. Allow the user to
1767 # just say --target=foo-darwin without a version number to mean
1768 # "the version on this system".
1769 *-*-darwin*,*-*-darwin*)
1770 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1771 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1772 if test $hostos = $targetos -o $targetos = darwin ; then
1774 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1779 i?86-*-*,x86_64-*-* \
1780 | powerpc*-*-*,powerpc64*-*-*)
1781 CROSS="$CROSS -DNATIVE_CROSS" ;;
1786 if test "x$with_headers" = x; then
1793 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1794 SYSTEM_HEADER_DIR=$build_system_header_dir
1797 # If this is a cross-compiler that does not
1798 # have its own set of headers then define
1801 # If this is using newlib, without having the headers available now,
1802 # then define inhibit_libc in LIBGCC2_CFLAGS.
1803 # This prevents libgcc2 from containing any code which requires libc
1805 : ${inhibit_libc=false}
1806 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1807 test x$with_newlib = xyes ; } &&
1808 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1811 AC_SUBST(inhibit_libc)
1813 # When building gcc with a cross-compiler, we need to adjust things so
1814 # that the generator programs are still built with the native compiler.
1815 # Also, we cannot run fixincludes.
1817 # These are the normal (build=host) settings:
1818 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1819 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1820 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1821 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1823 # And these apply if build != host, or we are generating coverage data
1824 if test x$build != x$host || test "x$coverage_flags" != x
1826 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1827 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1830 # Expand extra_headers to include complete path.
1831 # This substitutes for lots of t-* files.
1833 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1834 for file in ${extra_headers} ; do
1835 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1838 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1839 if test x"$use_gcc_tgmath" = xyes
1840 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1843 # Define collect2 in Makefile.
1844 case $host_can_use_collect2 in
1846 *) collect2='collect2$(exeext)' ;;
1848 AC_SUBST([collect2])
1850 # Add a definition of USE_COLLECT2 if system wants one.
1851 case $use_collect2 in
1852 no) use_collect2= ;;
1855 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1856 xm_defines="${xm_defines} USE_COLLECT2"
1857 case $host_can_use_collect2 in
1859 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1865 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1866 [Define to the name of the LTO plugin DSO that must be
1867 passed to the linker's -plugin=LIB option.])
1869 # ---------------------------
1870 # Assembler & linker features
1871 # ---------------------------
1873 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1874 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1875 # However when ld-new is first executed from the build tree, libtool will
1876 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1877 # to the build tree. While doing this we need to use the previous-stage
1878 # linker, or we have an infinite loop. The presence of a shell script as
1879 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1880 # the gcc/collect-ld script. So we need to know how libtool works, or
1881 # exec-tool will fail.
1883 m4_defun([_LT_CONFIG_COMMANDS], [])
1886 AC_SUBST(enable_fast_install)
1888 # Identify the assembler which will work hand-in-glove with the newly
1889 # built GCC, so that we can examine its features. This is the assembler
1890 # which will be driven by the driver program.
1892 # If build != host, and we aren't building gas in-tree, we identify a
1893 # build->target assembler and hope that it will have the same features
1894 # as the host->target assembler we'll be using.
1895 gcc_cv_gas_major_version=
1896 gcc_cv_gas_minor_version=
1897 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1899 m4_pattern_allow([AS_FOR_TARGET])dnl
1900 AS_VAR_SET_IF(gcc_cv_as,, [
1901 if test -x "$DEFAULT_ASSEMBLER"; then
1902 gcc_cv_as="$DEFAULT_ASSEMBLER"
1903 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1904 && test -f ../gas/Makefile \
1905 && test x$build = x$host; then
1906 gcc_cv_as=../gas/as-new$build_exeext
1907 elif test -x as$build_exeext; then
1908 # Build using assembler in the current directory.
1909 gcc_cv_as=./as$build_exeext
1910 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1911 gcc_cv_as="$AS_FOR_TARGET"
1913 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1916 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1917 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1918 case "$ORIGINAL_AS_FOR_TARGET" in
1919 ./as | ./as$build_exeext) ;;
1920 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1923 AC_MSG_CHECKING(what assembler to use)
1924 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1925 # Single tree build which includes gas. We want to prefer it
1926 # over whatever linker top-level may have detected, since
1927 # we'll use what we're building after installation anyway.
1928 AC_MSG_RESULT(newly built gas)
1930 _gcc_COMPUTE_GAS_VERSION
1931 in_tree_gas_is_elf=no
1932 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1933 || (grep 'obj_format = multi' ../gas/Makefile \
1934 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1936 in_tree_gas_is_elf=yes
1939 AC_MSG_RESULT($gcc_cv_as)
1943 # Identify the linker which will work hand-in-glove with the newly
1944 # built GCC, so that we can examine its features. This is the linker
1945 # which will be driven by the driver program.
1947 # If build != host, and we aren't building gas in-tree, we identify a
1948 # build->target linker and hope that it will have the same features
1949 # as the host->target linker we'll be using.
1950 gcc_cv_gld_major_version=
1951 gcc_cv_gld_minor_version=
1952 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1953 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1955 AS_VAR_SET_IF(gcc_cv_ld,, [
1956 if test -x "$DEFAULT_LINKER"; then
1957 gcc_cv_ld="$DEFAULT_LINKER"
1958 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1959 && test -f ../ld/Makefile \
1960 && test x$build = x$host; then
1961 gcc_cv_ld=../ld/ld-new$build_exeext
1962 elif test -x collect-ld$build_exeext; then
1963 # Build using linker in the current directory.
1964 gcc_cv_ld=./collect-ld$build_exeext
1965 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1966 gcc_cv_ld="$LD_FOR_TARGET"
1968 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1971 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1972 PLUGIN_LD=`basename $gcc_cv_ld`
1973 AC_ARG_WITH(plugin-ld,
1974 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
1975 [if test x"$withval" != x; then
1976 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1977 PLUGIN_LD="$withval"
1979 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1980 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1982 # Check to see if we are using gold instead of ld
1983 AC_MSG_CHECKING(whether we are using gold)
1985 if test x$gcc_cv_ld != x; then
1986 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1987 | grep "GNU gold" > /dev/null; then
1991 AC_MSG_RESULT($ld_is_gold)
1993 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1994 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1995 case "$ORIGINAL_LD_FOR_TARGET" in
1996 ./collect-ld | ./collect-ld$build_exeext) ;;
1997 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2000 AC_MSG_CHECKING(what linker to use)
2001 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2002 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2003 # Single tree build which includes ld. We want to prefer it
2004 # over whatever linker top-level may have detected, since
2005 # we'll use what we're building after installation anyway.
2006 AC_MSG_RESULT(newly built ld)
2008 in_tree_ld_is_elf=no
2009 if (grep 'EMUL = .*elf' ../ld/Makefile \
2010 || grep 'EMUL = .*linux' ../ld/Makefile \
2011 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2012 in_tree_ld_is_elf=yes
2013 elif test "$ld_is_gold" = yes; then
2014 in_tree_ld_is_elf=yes
2016 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
2019 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2020 if test x$gcc_cv_gld_version != x; then
2024 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2025 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2028 AC_MSG_RESULT($gcc_cv_ld)
2032 # Figure out what nm we will be using.
2033 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2034 AS_VAR_SET_IF(gcc_cv_nm,, [
2035 if test -f $gcc_cv_binutils_srcdir/configure.in \
2036 && test -f ../binutils/Makefile \
2037 && test x$build = x$host; then
2038 gcc_cv_nm=../binutils/nm-new$build_exeext
2039 elif test -x nm$build_exeext; then
2040 gcc_cv_nm=./nm$build_exeext
2041 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2042 gcc_cv_nm="$NM_FOR_TARGET"
2044 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2047 AC_MSG_CHECKING(what nm to use)
2048 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2049 # Single tree build which includes binutils.
2050 AC_MSG_RESULT(newly built nm)
2053 AC_MSG_RESULT($gcc_cv_nm)
2057 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2058 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2059 case "$ORIGINAL_NM_FOR_TARGET" in
2060 ./nm | ./nm$build_exeext) ;;
2061 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2065 # Figure out what objdump we will be using.
2066 AS_VAR_SET_IF(gcc_cv_objdump,, [
2067 if test -f $gcc_cv_binutils_srcdir/configure.in \
2068 && test -f ../binutils/Makefile \
2069 && test x$build = x$host; then
2070 # Single tree build which includes binutils.
2071 gcc_cv_objdump=../binutils/objdump$build_exeext
2072 elif test -x objdump$build_exeext; then
2073 gcc_cv_objdump=./objdump$build_exeext
2074 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2075 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2077 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2080 AC_MSG_CHECKING(what objdump to use)
2081 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2082 # Single tree build which includes binutils.
2083 AC_MSG_RESULT(newly built objdump)
2084 elif test x$gcc_cv_objdump = x; then
2085 AC_MSG_RESULT(not found)
2087 AC_MSG_RESULT($gcc_cv_objdump)
2090 # Figure out what readelf we will be using.
2091 AS_VAR_SET_IF(gcc_cv_readelf,, [
2092 if test -f $gcc_cv_binutils_srcdir/configure.in \
2093 && test -f ../binutils/Makefile \
2094 && test x$build = x$host; then
2095 # Single tree build which includes binutils.
2096 gcc_cv_readelf=../binutils/readelf$build_exeext
2097 elif test -x readelf$build_exeext; then
2098 gcc_cv_readelf=./readelf$build_exeext
2100 AC_PATH_PROG(gcc_cv_readelf, readelf)
2103 AC_MSG_CHECKING(what readelf to use)
2104 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2105 # Single tree build which includes binutils.
2106 AC_MSG_RESULT(newly built readelf)
2107 elif test x$gcc_cv_readelf = x; then
2108 AC_MSG_RESULT(not found)
2110 AC_MSG_RESULT($gcc_cv_readelf)
2113 # Figure out what assembler alignment features are present.
2114 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2118 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2119 [Define if your assembler supports .balign and .p2align.])])
2121 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2124 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2125 [Define if your assembler supports specifying the maximum number
2126 of bytes to skip when using the GAS .p2align command.])])
2128 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2131 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2132 [Define if your assembler supports .literal16.])])
2134 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2136 [conftest_label1: .word 0
2138 conftest_label2: .word 0
2140 [if test x$gcc_cv_nm != x; then
2141 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2142 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2143 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2145 else gcc_cv_as_subsection_m1=yes
2147 rm -f conftest.nm1 conftest.nm2
2149 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2150 [Define if your assembler supports .subsection and .subsection -1 starts
2151 emitting at the beginning of your section.])])
2153 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2156 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2158 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2160 [ .weakref foobar, barfnot],,
2161 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2163 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2166 .NSUBSPA $CODE$,COMDAT],,
2167 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2169 # .hidden needs to be supported in both the assembler and the linker,
2170 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2171 # This is irritatingly difficult to feature test for; we have to check the
2172 # date string after the version number. If we've got an in-tree
2173 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2175 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2176 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2180 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2181 # STV_HIDDEN, so disable .hidden support if so.
2183 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2184 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2185 cat > conftest.s <<EOF
2192 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2193 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2194 grep '\.hidden default' > /dev/null; then
2197 gcc_cv_as_hidden=yes
2200 # Assume bug is present if objdump is missing.
2205 gcc_cv_as_hidden=yes
2210 # Darwin as has some visibility support, though with a different syntax.
2211 gcc_cv_as_hidden=yes
2215 # gnu_indirect_function type is an extension proposed at
2216 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2217 # selection of function implementation
2218 AC_ARG_ENABLE(gnu-indirect-function,
2219 [AS_HELP_STRING([--enable-gnu-indirect-function],
2220 [enable the use of the @gnu_indirect_function to glibc systems])],
2221 [case $enable_gnu_indirect_function in
2223 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2224 Valid choices are 'yes' and 'no'.]) ;;
2226 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2227 if test x$enable_gnu_indirect_function = xyes; then
2228 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2229 [Define if your system supports gnu indirect functions.])
2233 if test $in_tree_ld != yes ; then
2234 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2235 if echo "$ld_ver" | grep GNU > /dev/null; then
2236 if test x"$ld_is_gold" = xyes; then
2237 # GNU gold --version looks like this:
2239 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2241 # We extract the binutils version which is more familiar and specific
2242 # than the gold version.
2243 ld_vers=`echo $ld_ver | sed -n \
2244 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2246 # GNU ld --version looks like this:
2248 # GNU ld (GNU Binutils) 2.21.51.20110225
2249 ld_vers=`echo $ld_ver | sed -n \
2250 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2252 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2253 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2254 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2255 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2260 # Solaris 2 ld -V output looks like this for a regular version:
2262 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2264 # but test versions add stuff at the end:
2266 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2268 ld_ver=`$gcc_cv_ld -V 2>&1`
2269 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2270 ld_vers=`echo $ld_ver | sed -n \
2271 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2272 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2273 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2281 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2282 [[if test $in_tree_ld = yes ; then
2284 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2285 && test $in_tree_ld_is_elf = yes; then
2286 gcc_cv_ld_hidden=yes
2289 gcc_cv_ld_hidden=yes
2290 if test x"$ld_is_gold" = xyes; then
2292 elif echo "$ld_ver" | grep GNU > /dev/null; then
2293 if test 0"$ld_date" -lt 20020404; then
2294 if test -n "$ld_date"; then
2295 # If there was date string, but was earlier than 2002-04-04, fail
2297 elif test -z "$ld_vers"; then
2298 # If there was no date string nor ld version number, something is wrong
2301 test -z "$ld_vers_patch" && ld_vers_patch=0
2302 if test "$ld_vers_major" -lt 2; then
2304 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2305 gcc_cv_ld_hidden="no"
2306 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2314 # Darwin ld has some visibility support.
2315 gcc_cv_ld_hidden=yes
2317 hppa64*-*-hpux* | ia64*-*-hpux*)
2318 gcc_cv_ld_hidden=yes
2321 # .hidden support was backported to Solaris 8, starting with ld
2323 if test "$ld_vers_minor" -ge 276; then
2324 gcc_cv_ld_hidden=yes
2329 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2330 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2331 # .symbolic was only added in Solaris 9 12/02.
2332 gcc_cv_ld_hidden=yes
2340 libgcc_visibility=no
2341 AC_SUBST(libgcc_visibility)
2342 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2343 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2344 libgcc_visibility=yes
2345 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2346 [Define if your assembler and linker support .hidden.])
2349 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2350 gcc_cv_ld_ro_rw_mix=unknown
2351 if test $in_tree_ld = yes ; then
2352 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2353 && test $in_tree_ld_is_elf = yes; then
2354 gcc_cv_ld_ro_rw_mix=read-write
2356 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2357 echo '.section myfoosect, "a"' > conftest1.s
2358 echo '.section myfoosect, "aw"' > conftest2.s
2359 echo '.byte 1' >> conftest2.s
2360 echo '.section myfoosect, "a"' > conftest3.s
2361 echo '.byte 0' >> conftest3.s
2362 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2363 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2364 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2365 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2366 conftest2.o conftest3.o > /dev/null 2>&1; then
2367 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2368 | sed -e '/myfoosect/!d' -e N`
2369 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2370 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2371 gcc_cv_ld_ro_rw_mix=read-only
2373 gcc_cv_ld_ro_rw_mix=read-write
2378 rm -f conftest.* conftest[123].*
2381 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2382 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2383 [Define if your linker links a mix of read-only
2384 and read-write sections into a read-write section.])
2386 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2388 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2389 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2397 [[# GAS versions before 2.11 do not support uleb128,
2398 # despite appearing to.
2399 # ??? There exists an elf-specific test that will crash
2400 # the assembler. Perhaps it's better to figure out whether
2401 # arbitrary sections are supported and try the test.
2402 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2403 if echo "$as_ver" | grep GNU > /dev/null; then
2404 as_vers=`echo $as_ver | sed -n \
2405 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2406 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2407 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2408 if test $as_major -eq 2 && test $as_minor -lt 11
2410 else gcc_cv_as_leb128=yes
2413 [AC_DEFINE(HAVE_AS_LEB128, 1,
2414 [Define if your assembler supports .sleb128 and .uleb128.])])
2416 # Check if we have assembler support for unwind directives.
2417 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2424 .cfi_escape 1, 2, 3, 4, 5
2428 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2429 # read-only and read-write sections, we need to make sure that the
2430 # assembler used emits read-write .eh_frame sections.
2431 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2432 if test "x$gcc_cv_objdump" != x; then
2433 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2434 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2435 gcc_cv_as_cfi_directive=no
2438 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2439 # On Solaris/x86, make sure that GCC and gas agree on using
2440 # read-only .eh_frame sections for 64-bit.
2441 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2442 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2443 sed -e /.eh_frame/!d -e N | \
2444 grep READONLY > /dev/null; then
2445 gcc_cv_as_cfi_directive=yes
2447 gcc_cv_as_cfi_directive=no
2451 gcc_cv_as_cfi_directive=yes
2456 # no objdump, err on the side of caution
2457 gcc_cv_as_cfi_directive=no
2460 gcc_cv_as_cfi_directive=yes
2464 gcc_cv_as_cfi_directive=yes
2467 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2468 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2472 .cfi_adjust_cfa_offset 64
2474 .cfi_adjust_cfa_offset 128
2477 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2478 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2479 gcc_cv_as_cfi_advance_working=yes
2483 # no objdump, err on the side of caution
2484 gcc_cv_as_cfi_advance_working=no
2486 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2487 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2488 [`if test $gcc_cv_as_cfi_directive = yes \
2489 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2490 [Define 0/1 if your assembler supports CFI directives.])
2492 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2493 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2494 gcc_cv_as_cfi_personality_directive, ,,
2497 .cfi_personality 0, symbol
2499 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2500 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2501 then echo 1; else echo 0; fi`],
2502 [Define 0/1 if your assembler supports .cfi_personality.])
2504 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2505 gcc_cv_as_cfi_sections_directive, ,,
2507 .cfi_sections .debug_frame, .eh_frame
2511 win32 | pe | cygwin* | mingw32* | uwin*)
2512 # Need to check that we generated the correct relocation for the
2513 # .debug_frame section. This was fixed for binutils 2.21.
2514 gcc_cv_as_cfi_sections_directive=no
2515 if test "x$gcc_cv_objdump" != x; then
2516 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2517 grep secrel > /dev/null; then
2518 gcc_cv_as_cfi_sections_directive=yes
2523 gcc_cv_as_cfi_sections_directive=yes
2526 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2527 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2528 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2529 then echo 1; else echo 0; fi`],
2530 [Define 0/1 if your assembler supports .cfi_sections.])
2532 # GAS versions up to and including 2.11.0 may mis-optimize
2534 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2542 .section .eh_frame,"aw",@progbits
2544 .4byte .LECIE1-.LSCIE1
2558 .4byte .LEFDE1-.LASFDE1
2560 .4byte .LASFDE1-__FRAME_BEGIN__
2568 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2569 cat > conftest.lit <<EOF
2570 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2571 0010 01000000 12000000 18000000 00000000 ................
2572 0020 08000000 04080000 0044 .........D @&t@
2574 cat > conftest.big <<EOF
2575 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2576 0010 00000001 00000012 00000018 00000000 ................
2577 0020 00000008 04000000 0844 .........D @&t@
2579 # If the assembler didn't choke, and we can objdump,
2580 # and we got the correct data, then succeed.
2581 # The text in the here-document typically retains its unix-style line
2582 # endings, while the output of objdump will use host line endings.
2583 # Therefore, use diff -b for the comparisons.
2584 if test x$gcc_cv_objdump != x \
2585 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2586 | tail -3 > conftest.got \
2587 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2588 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2590 gcc_cv_as_eh_frame=yes
2591 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2592 gcc_cv_as_eh_frame=buggy
2594 # Uh oh, what do we do now?
2595 gcc_cv_as_eh_frame=no
2598 if test $gcc_cv_as_eh_frame = buggy; then
2599 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2600 [Define if your assembler mis-optimizes .eh_frame data.])
2603 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2604 [elf,2,12,0], [--fatal-warnings],
2605 [.section .rodata.str, "aMS", @progbits, 1])
2606 if test $gcc_cv_as_shf_merge = no; then
2607 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2608 [elf,2,12,0], [--fatal-warnings],
2609 [.section .rodata.str, "aMS", %progbits, 1])
2611 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2612 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2613 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2615 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2616 gcc_cv_as_comdat_group,
2617 [elf,2,16,0], [--fatal-warnings],
2618 [.section .text,"axG",@progbits,.foo,comdat])
2619 if test $gcc_cv_as_comdat_group = yes; then
2620 gcc_cv_as_comdat_group_percent=no
2621 gcc_cv_as_comdat_group_group=no
2623 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2624 gcc_cv_as_comdat_group_percent,
2625 [elf,2,16,0], [--fatal-warnings],
2626 [.section .text,"axG",%progbits,.foo,comdat])
2627 if test $gcc_cv_as_comdat_group_percent = yes; then
2628 gcc_cv_as_comdat_group_group=no
2631 # Sun as uses a completely different syntax.
2636 .group foo,".text%foo",#comdat
2637 .section ".text%foo", #alloc,#execinstr,#progbits
2642 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2644 .group foo,.text%foo,#comdat
2645 .section .text%foo, "ax", @progbits
2651 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2652 gcc_cv_as_comdat_group_group,
2658 if test x"$ld_is_gold" = xyes; then
2660 elif test $in_tree_ld = yes ; then
2662 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2663 && test $in_tree_ld_is_elf = yes; then
2666 elif echo "$ld_ver" | grep GNU > /dev/null; then
2668 if test 0"$ld_date" -lt 20050308; then
2669 if test -n "$ld_date"; then
2670 # If there was date string, but was earlier than 2005-03-08, fail
2672 elif test "$ld_vers_major" -lt 2; then
2674 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2681 *-*-solaris2.1[1-9]*)
2683 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2684 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2687 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2688 # least ld version 1.2267.
2689 if test "$ld_vers_major" -gt 1; then
2691 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2693 elif test "$ld_vers_minor" -ge 2267; then
2698 # Assume linkers other than GNU ld don't support COMDAT group.
2704 # Allow overriding the automatic COMDAT group tests above.
2705 AC_ARG_ENABLE(comdat,
2706 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2707 [comdat_group="$enable_comdat"])
2708 if test $comdat_group = no; then
2709 gcc_cv_as_comdat_group=no
2710 gcc_cv_as_comdat_group_percent=no
2711 gcc_cv_as_comdat_group_group=no
2713 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2714 [`if test $gcc_cv_as_comdat_group = yes \
2715 || test $gcc_cv_as_comdat_group_percent = yes \
2716 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2717 [Define 0/1 if your assembler and linker support COMDAT groups.])
2719 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2720 gcc_cv_as_discriminator,
2724 .loc 1 1 0 discriminator 1],,
2725 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2726 [Define if your assembler supports the .loc discriminator sub-directive.])])
2728 # Thread-local storage - the check is heavily parameterized.
2737 .section ".tdata","awT",@progbits
2740 ldq $27,__tls_get_addr($29) !literal!1
2741 lda $16,foo($29) !tlsgd!1
2742 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2743 ldq $27,__tls_get_addr($29) !literal!2
2744 lda $16,foo($29) !tlsldm!2
2745 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2746 ldq $1,foo($29) !gotdtprel
2747 ldah $2,foo($29) !dtprelhi
2748 lda $3,foo($2) !dtprello
2749 lda $4,foo($29) !dtprel
2750 ldq $1,foo($29) !gottprel
2751 ldah $2,foo($29) !tprelhi
2752 lda $3,foo($2) !tprello
2753 lda $4,foo($29) !tprel'
2756 tls_as_opt=--fatal-warnings
2758 cris-*-*|crisv32-*-*)
2760 .section ".tdata","awT",@progbits
2767 tls_as_opt=--fatal-warnings
2771 .section ".tdata","awT",@progbits
2783 .section ".tdata","awT",@progbits
2787 addil LT%foo-$tls_gdidx$,gp
2788 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2791 addil LT%foo-$tls_ldidx$,gp
2793 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2794 addil LR%foo-$tls_dtpoff$,%ret0
2795 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2797 addil LT%foo-$tls_ieoff$,gp
2798 ldw RT%foo-$tls_ieoff$(%r1),%t2
2801 addil LR%foo-$tls_leoff$,%t1
2802 ldo RR%foo-$tls_leoff$(%r1),%t2'
2805 tls_as_opt=--fatal-warnings
2809 .section ".tdata","awT",%progbits
2820 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2822 i[34567]86-*-solaris2.*)
2824 tga_func=___tls_get_addr
2826 x86_64-*-solaris2.1[0-9]*)
2828 tga_func=__tls_get_addr
2834 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2836 .section .tdata,"awt",@progbits'
2840 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2841 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2845 .section ".tdata","awT",@progbits'
2848 tls_as_opt="--fatal-warnings"
2850 conftest_s="$conftest_s
2854 leal foo@tlsgd(,%ebx,1), %eax
2855 leal foo@tlsldm(%ebx), %eax
2856 leal foo@dtpoff(%eax), %edx
2857 movl foo@gottpoff(%ebx), %eax
2858 subl foo@gottpoff(%ebx), %eax
2859 addl foo@gotntpoff(%ebx), %eax
2860 movl foo@indntpoff, %eax
2861 movl \$foo@tpoff, %eax
2862 subl \$foo@tpoff, %eax
2863 leal foo@ntpoff(%ecx), %eax"
2867 .section ".tdata","awT",@progbits
2871 leaq foo@TLSGD(%rip), %rdi
2872 leaq foo@TLSLD(%rip), %rdi
2873 leaq foo@DTPOFF(%rax), %rdx
2874 movq foo@GOTTPOFF(%rip), %rax
2875 movq $foo@TPOFF, %rax'
2878 tls_as_opt=--fatal-warnings
2882 .section ".tdata","awT",@progbits
2885 addl r16 = @ltoff(@dtpmod(foo#)), gp
2886 addl r17 = @ltoff(@dtprel(foo#)), gp
2887 addl r18 = @ltoff(@tprel(foo#)), gp
2888 addl r19 = @dtprel(foo#), gp
2889 adds r21 = @dtprel(foo#), r13
2890 movl r23 = @dtprel(foo#)
2891 addl r20 = @tprel(foo#), gp
2892 adds r22 = @tprel(foo#), r13
2893 movl r24 = @tprel(foo#)'
2896 tls_as_opt=--fatal-warnings
2900 .section .tdata,"awT",@progbits
2904 addiu $4, $28, %tlsgd(x)
2905 addiu $4, $28, %tlsldm(x)
2906 lui $4, %dtprel_hi(x)
2907 addiu $4, $4, %dtprel_lo(x)
2908 lw $4, %gottprel(x)($28)
2909 lui $4, %tprel_hi(x)
2910 addiu $4, $4, %tprel_lo(x)'
2913 tls_as_opt='-32 --fatal-warnings'
2917 .section .tdata,"awT",@progbits
2922 move.l x@TLSGD(%a5),%a0
2923 move.l x@TLSLDM(%a5),%a0
2924 move.l x@TLSLDO(%a5),%a0
2925 move.l x@TLSIE(%a5),%a0
2926 move.l x@TLSLE(%a5),%a0'
2929 tls_as_opt='--fatal-warnings'
2933 .section ".tdata","awT",@progbits
2941 addi 3,31,ld0@got@tlsgd
2943 addi 3,31,x1@got@tlsld
2946 addis 9,3,x2@dtprel@ha
2947 addi 9,9,x2@dtprel@l
2948 lwz 9,x3@got@tprel(31)
2951 addis 9,2,x2@tprel@ha
2952 addi 9,9,x2@tprel@l'
2955 tls_as_opt="-a32 --fatal-warnings"
2959 .section ".tdata","awT",@progbits
2967 addi 3,2,ld0@got@tlsgd
2973 addi 3,2,x1@got@tlsld
2979 addis 9,3,x2@dtprel@ha
2980 addi 9,9,x2@dtprel@l
2983 ld 9,x3@got@dtprel(2)
2989 tls_as_opt="-a64 --fatal-warnings"
2993 .section ".tdata","awT",@progbits
3002 l %r1,foo@GOTNTPOFF(%r12)
3003 l %r1,0(%r1):tls_load:foo
3004 bas %r14,0(%r1,%r13):tls_gdcall:foo
3005 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3008 tls_as_opt="-m31 --fatal-warnings"
3012 .section ".tdata","awT",@progbits
3020 lg %r1,foo@GOTNTPOFF(%r12)
3021 larl %r1,foo@INDNTPOFF
3022 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3023 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3026 tls_as_opt="-m64 -Aesame --fatal-warnings"
3028 sh-*-* | sh[34]-*-*)
3030 .section ".tdata","awT",@progbits
3040 tls_as_opt=--fatal-warnings
3044 sparc*-sun-solaris2.*)
3046 tga_func=__tls_get_addr
3052 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3054 .section ".tdata",#alloc,#write,#tls'
3059 .section ".tdata","awT",@progbits'
3062 tls_as_opt="-32 --fatal-warnings"
3064 conftest_s="$conftest_s
3067 sethi %tgd_hi22(foo), %o0
3068 add %o0, %tgd_lo10(foo), %o1
3069 add %l7, %o1, %o0, %tgd_add(foo)
3070 call __tls_get_addr, %tgd_call(foo)
3071 sethi %tldm_hi22(foo), %l1
3072 add %l1, %tldm_lo10(foo), %l2
3073 add %l7, %l2, %o0, %tldm_add(foo)
3074 call __tls_get_addr, %tldm_call(foo)
3075 sethi %tldo_hix22(foo), %l3
3076 xor %l3, %tldo_lox10(foo), %l4
3077 add %o0, %l4, %l5, %tldo_add(foo)
3078 sethi %tie_hi22(foo), %o3
3079 add %o3, %tie_lo10(foo), %o3
3080 ld [%l7 + %o3], %o2, %tie_ld(foo)
3081 add %g7, %o2, %o4, %tie_add(foo)
3082 sethi %tle_hix22(foo), %l1
3083 xor %l1, %tle_lox10(foo), %o5
3084 ld [%g7 + %o5], %o1"
3088 .section ".tdata","awT",@progbits
3091 movi a8, foo@TLSFUNC
3092 movi a10, foo@TLSARG
3093 callx8.tls a8, foo@TLSCALL'
3100 if test "x$enable_tls" = xno ; then
3101 : # TLS explicitly disabled.
3102 elif test "x$enable_tls" = xyes ; then
3103 set_have_as_tls=yes # TLS explicitly enabled.
3104 elif test -z "$tls_first_major"; then
3105 : # If we don't have a check, assume no support.
3107 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3108 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3109 [set_have_as_tls=yes])
3113 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3114 # with TLS support are in use, native TLS cannot work.
3118 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3119 # gld with TLS support are in use, native TLS cannot work.
3122 # TLS was introduced in the Solaris 9 FCS release and backported to
3123 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3124 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3125 # ld and GCC don't support any longer.
3127 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3129 # Check ld and ld.so.1 TLS support.
3130 if echo "$ld_ver" | grep GNU > /dev/null; then
3131 # Assume all interesting versions of GNU ld have TLS support.
3132 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3136 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3138 min_tls_ld_vers_minor=280
3140 # Solaris 8/SPARC ld has TLS support since version 1.272.
3141 sparc*-*-solaris2.8)
3142 min_tls_ld_vers_minor=272
3144 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3146 min_tls_ld_vers_minor=374
3148 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3149 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3150 min_tls_ld_vers_minor=343
3153 if test "$ld_vers_major" -gt 1 || \
3154 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3160 AC_MSG_RESULT($ld_tls_support)
3163 save_LDFLAGS="$LDFLAGS"
3167 AC_MSG_CHECKING(alternate thread library)
3169 # TLS support was backported to Solaris 8 patches, but only lives in
3170 # the alternate thread library which became the default in Solaris 9.
3171 # We want to always use that, irrespective of TLS support.
3173 # Take multilib subdir into account. There's no spec to handle
3174 # this. The 64 symlink exists since Solaris 8.
3175 lwp_dir=/usr/lib/lwp
3176 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3177 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3184 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3185 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3186 [Define to the linker flags to use for -pthread.])
3187 AC_MSG_RESULT($lwp_dir)
3189 AC_MSG_CHECKING(library containing $tga_func)
3190 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3191 # (32-bit x86) only lived in libthread, so check for that. Keep
3192 # set_have_as_tls if found, disable if not.
3193 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3194 # Clear LIBS if we cannot support TLS.
3195 if test $set_have_as_tls = no; then
3198 # Always define LIB_TLS_SPEC, even without TLS support.
3199 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3200 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3201 AC_MSG_RESULT($LIBS)
3204 LDFLAGS="$save_LDFLAGS"
3207 if test $set_have_as_tls = yes ; then
3208 AC_DEFINE(HAVE_AS_TLS, 1,
3209 [Define if your assembler and linker support thread-local storage.])
3212 # Target-specific assembler checks.
3214 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3215 gcc_cv_ld_static_dynamic=no
3216 gcc_cv_ld_static_option='-Bstatic'
3217 gcc_cv_ld_dynamic_option='-Bdynamic'
3218 if test $in_tree_ld = yes ; then
3219 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3220 gcc_cv_ld_static_dynamic=yes
3222 elif test x$gcc_cv_ld != x; then
3223 # Check if linker supports -Bstatic/-Bdynamic option
3224 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3225 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3226 gcc_cv_ld_static_dynamic=yes
3229 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3231 gcc_cv_ld_static_dynamic=yes
3232 gcc_cv_ld_static_option="-noso"
3233 gcc_cv_ld_dynamic_option="-so_archive"
3235 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3237 gcc_cv_ld_static_dynamic=yes
3239 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3241 gcc_cv_ld_static_dynamic=yes
3246 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3247 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3248 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3249 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3250 [Define to the linker option to disable use of shared objects.])
3251 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3252 [Define to the linker option to enable use of shared objects.])
3254 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3256 if test x"$demangler_in_ld" = xyes; then
3257 AC_MSG_CHECKING(linker --demangle support)
3258 gcc_cv_ld_demangle=no
3259 if test $in_tree_ld = yes; then
3260 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3261 gcc_cv_ld_demangle=yes
3263 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3264 # Check if the GNU linker supports --demangle option
3265 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3266 gcc_cv_ld_demangle=yes
3269 if test x"$gcc_cv_ld_demangle" = xyes; then
3270 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3271 [Define if your linker supports --demangle option.])
3273 AC_MSG_RESULT($gcc_cv_ld_demangle)
3276 AC_MSG_CHECKING(linker plugin support)
3278 if test -f liblto_plugin.la; then
3279 save_ld_ver="$ld_ver"
3280 save_ld_vers_major="$ld_vers_major"
3281 save_ld_vers_minor="$ld_vers_minor"
3282 save_ld_is_gold="$ld_is_gold"
3286 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3288 # FIXME: ld_is_gold?
3289 ld_vers_major="$gcc_cv_gld_major_version"
3290 ld_vers_minor="$gcc_cv_gld_minor_version"
3292 # Determine plugin linker version.
3293 # FIXME: Partial duplicate from above, generalize.
3295 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3296 if echo "$ld_ver" | grep GNU > /dev/null; then
3297 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3299 ld_vers=`echo $ld_ver | sed -n \
3300 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3302 ld_vers=`echo $ld_ver | sed -n \
3303 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3305 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3306 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3311 # Determine plugin support.
3312 if echo "$ld_ver" | grep GNU > /dev/null; then
3313 # Require GNU ld or gold 2.21+ for plugin support by default.
3314 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3316 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3317 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3322 ld_ver="$save_ld_ver"
3323 ld_vers_major="$save_ld_vers_major"
3324 ld_vers_minor="$save_ld_vers_minor"
3325 ld_is_gold="$save_ld_is_gold"
3327 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3328 [Define to the level of your linker's plugin support.])
3329 AC_MSG_RESULT($gcc_cv_lto_plugin)
3332 # All TARGET_ABI_OSF targets.
3333 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3334 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3335 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3338 extbl $3, $2, $3 !lituse_bytoff!1
3339 ldq $2, a($29) !literal!1
3340 ldq $4, b($29) !literal!2
3341 ldq_u $3, 0($2) !lituse_base!1
3342 ldq $27, f($29) !literal!5
3343 jsr $26, ($27), f !lituse_jsr!5
3344 ldah $29, 0($26) !gpdisp!3
3345 lda $0, c($29) !gprel
3346 ldah $1, d($29) !gprelhigh
3347 lda $1, d($1) !gprellow
3348 lda $29, 0($29) !gpdisp!3],,
3349 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3350 [Define if your assembler supports explicit relocations.])])
3351 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3352 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3355 ldq $27, a($29) !literal!1
3356 jsr $26, ($27), a !lituse_jsrdirect!1],,
3357 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3358 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3362 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3363 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3364 [-no-mul-bug-abort], [.text],,
3365 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3366 [Define if your assembler supports the -no-mul-bug-abort option.])])
3370 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3371 [.register %g2, #scratch],,
3372 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3373 [Define if your assembler supports .register.])])
3375 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3377 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3378 [Define if your assembler supports -relax option.])])
3380 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3381 gcc_cv_as_sparc_gotdata_op,,
3388 sethi %gdop_hix22(foo), %g1
3389 xor %g1, %gdop_lox10(foo), %g1
3390 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3391 [if test x$gcc_cv_ld != x \
3392 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3393 if test x$gcc_cv_objdump != x; then
3394 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3395 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3396 gcc_cv_as_sparc_gotdata_op=no
3398 gcc_cv_as_sparc_gotdata_op=yes
3403 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3404 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3406 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3407 gcc_cv_as_sparc_ua_pcrel,,
3415 .uaword %r_disp32(foo)],
3416 [if test x$gcc_cv_ld != x \
3417 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3418 gcc_cv_as_sparc_ua_pcrel=yes
3421 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3422 [Define if your assembler and linker support unaligned PC relative relocs.])
3424 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3425 gcc_cv_as_sparc_ua_pcrel_hidden,,
3430 .uaword %r_disp32(foo)
3431 .byte 0x32, 0x33, 0x34
3436 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3437 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3438 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3439 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3440 if $gcc_cv_objdump -R conftest 2> /dev/null \
3441 | grep 'DISP32' > /dev/null 2>&1; then
3444 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3448 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3449 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3450 ]) # unaligned pcrel relocs
3452 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3453 gcc_cv_as_sparc_offsetable_lo10,,
3456 or %g1, %lo(ab) + 12, %g1
3457 or %g1, %lo(ab + 12), %g1],
3458 [if test x$gcc_cv_objdump != x \
3459 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3460 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3461 gcc_cv_as_sparc_offsetable_lo10=yes
3463 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3464 [Define if your assembler supports offsetable %lo().])])
3468 i[34567]86-*-* | x86_64-*-*)
3472 # Full C++ conformance when using a shared libstdc++-v3 requires some
3473 # support from the Cygwin DLL, which in more recent versions exports
3474 # wrappers to aid in interposing and redirecting operators new, delete,
3475 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3476 # are configuring for a version of Cygwin that exports the wrappers.
3477 if test x$host = x$target; then
3478 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3480 # Can't check presence of libc functions during cross-compile, so
3481 # we just have to assume we're building for an up-to-date target.
3482 gcc_ac_cygwin_dll_wrappers=yes
3484 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3485 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3486 [Define if you want to generate code by default that assumes that the
3487 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3490 cygwin* | pe | mingw32*)
3491 # Recent binutils allows the three-operand form of ".comm" on PE. This
3492 # definition is used unconditionally to initialise the default state of
3493 # the target option variable that governs usage of the feature.
3494 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3495 [2,19,52],,[.comm foo,1,32])
3496 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3497 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3498 [Define if your assembler supports specifying the alignment
3499 of objects allocated using the GAS .comm command.])
3500 # Used for DWARF 2 in PE
3501 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3502 gcc_cv_as_ix86_pe_secrel32,
3508 [if test x$gcc_cv_ld != x \
3509 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3510 gcc_cv_as_ix86_pe_secrel32=yes
3513 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3514 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3515 # Test if the assembler supports the extended form of the .section
3516 # directive that specifies section alignment. LTO support uses this,
3517 # but normally only after installation, so we warn but don't fail the
3518 # configure if LTO is enabled but the assembler does not support it.
3519 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3520 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3521 if test x$gcc_cv_as_section_has_align != xyes; then
3522 case ",$enable_languages," in
3524 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3531 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3532 gcc_cv_as_ix86_filds,,,
3533 [filds mem; fists mem],,
3534 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3535 [Define if your assembler uses filds and fists mnemonics.])])
3537 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3538 gcc_cv_as_ix86_fildq,,,
3539 [fildq mem; fistpq mem],,
3540 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3541 [Define if your assembler uses fildq and fistq mnemonics.])])
3543 gcc_GAS_CHECK_FEATURE([cmov syntax],
3544 gcc_cv_as_ix86_cmov_sun_syntax,,,
3545 [cmovl.l %edx, %eax],,
3546 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3547 [Define if your assembler supports the Sun syntax for cmov.])])
3549 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3550 gcc_cv_as_ix86_ffreep,,,
3552 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3553 [Define if your assembler supports the ffreep mnemonic.])])
3555 gcc_GAS_CHECK_FEATURE([.quad directive],
3556 gcc_cv_as_ix86_quad,,,
3558 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3559 [Define if your assembler supports the .quad directive.])])
3561 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3562 gcc_cv_as_ix86_sahf,,,
3565 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3566 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3568 gcc_GAS_CHECK_FEATURE([swap suffix],
3569 gcc_cv_as_ix86_swap,,,
3570 [movl.s %esp, %ebp],,
3571 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3572 [Define if your assembler supports the swap suffix.])])
3574 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3575 gcc_cv_as_ix86_diff_sect_delta,,,
3583 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3584 [Define if your assembler supports the subtraction of symbols in different sections.])])
3586 # These two are used unconditionally by i386.[ch]; it is to be defined
3587 # to 1 if the feature is present, 0 otherwise.
3588 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3589 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3595 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3596 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3597 [Define true if the assembler supports '.long foo@GOTOFF'.])
3599 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3600 gcc_cv_as_ix86_rep_lock_prefix,,,
3602 lock addl %edi, (%eax,%esi)
3603 lock orl $0, (%esp)],,
3604 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3605 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3607 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3608 gcc_cv_as_ix86_tlsgdplt,,,
3609 [call tls_gd@tlsgdplt],,
3610 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3611 [Define if your assembler supports @tlsgdplt.])])
3613 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3614 gcc_cv_as_ix86_tlsldmplt,,,
3615 [call tls_ld@tlsldmplt],,
3616 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3617 [Define if your assembler supports @tlsldmplt.])])
3622 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3623 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3625 addl r15 = @ltoffx(x#), gp
3627 ld8.mov r16 = [[r15]], x#],,
3628 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3629 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3635 *-*-aix*) conftest_s=' .machine "pwr5"
3639 gcc_GAS_CHECK_FEATURE([.machine directive support],
3640 gcc_cv_as_machine_directive,,,
3641 [ .machine ppc7400])
3642 if test x$gcc_cv_as_machine_directive != xyes; then
3643 echo "*** This target requires an assembler supporting \".machine\"" >&2
3644 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3645 test x$build = x$target && exit 1
3649 *) conftest_s=' .machine power4
3654 gcc_GAS_CHECK_FEATURE([mfcr field support],
3655 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3657 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3658 [Define if your assembler supports mfcr field.])])
3661 *-*-aix*) conftest_s=' .machine "pwr5"
3664 *) conftest_s=' .machine power5
3669 gcc_GAS_CHECK_FEATURE([popcntb support],
3670 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3672 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3673 [Define if your assembler supports popcntb field.])])
3676 *-*-aix*) conftest_s=' .machine "pwr5x"
3679 *) conftest_s=' .machine power5
3684 gcc_GAS_CHECK_FEATURE([fp round support],
3685 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3687 [AC_DEFINE(HAVE_AS_FPRND, 1,
3688 [Define if your assembler supports fprnd.])])
3691 *-*-aix*) conftest_s=' .machine "pwr6"
3694 *) conftest_s=' .machine power6
3699 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3700 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3702 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3703 [Define if your assembler supports mffgpr and mftgpr.])])
3706 *-*-aix*) conftest_s=' .csect .text[[PR]]
3708 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3712 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3713 *) conftest_s=' .text
3715 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3718 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3719 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3721 [AC_DEFINE(HAVE_AS_REL16, 1,
3722 [Define if your assembler supports R_PPC_REL16 relocs.])])
3725 *-*-aix*) conftest_s=' .machine "pwr6"
3728 *) conftest_s=' .machine power6
3733 gcc_GAS_CHECK_FEATURE([compare bytes support],
3734 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3736 [AC_DEFINE(HAVE_AS_CMPB, 1,
3737 [Define if your assembler supports cmpb.])])
3740 *-*-aix*) conftest_s=' .machine "pwr6"
3743 *) conftest_s=' .machine power6
3748 gcc_GAS_CHECK_FEATURE([decimal float support],
3749 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3751 [AC_DEFINE(HAVE_AS_DFP, 1,
3752 [Define if your assembler supports DFP instructions.])])
3755 *-*-aix*) conftest_s=' .machine "pwr7"
3758 *) conftest_s=' .machine power7
3763 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3764 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3766 [AC_DEFINE(HAVE_AS_VSX, 1,
3767 [Define if your assembler supports VSX instructions.])])
3770 *-*-aix*) conftest_s=' .machine "pwr7"
3773 *) conftest_s=' .machine power7
3778 gcc_GAS_CHECK_FEATURE([popcntd support],
3779 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3781 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3782 [Define if your assembler supports POPCNTD instructions.])])
3785 *-*-aix*) conftest_s=' .csect .text[[PR]]
3787 *) conftest_s=' .text
3791 gcc_GAS_CHECK_FEATURE([lwsync support],
3792 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3794 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3795 [Define if your assembler supports LWSYNC instructions.])])
3798 *-*-aix*) conftest_s=' .machine "476"
3801 *) conftest_s=' .machine "476"
3806 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3807 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3809 [AC_DEFINE(HAVE_AS_DCI, 1,
3810 [Define if your assembler supports the DCI/ICI instructions.])])
3812 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3813 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3814 [.gnu_attribute 4,1],,
3815 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3816 [Define if your assembler supports .gnu_attribute.])])
3818 gcc_GAS_CHECK_FEATURE([tls marker support],
3819 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3820 [ bl __tls_get_addr(x@tlsgd)],,
3821 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3822 [Define if your assembler supports arg info for __tls_get_addr.])])
3826 gcc_GAS_CHECK_FEATURE([.ref support],
3827 gcc_cv_as_aix_ref, [2.21.0],,
3828 [ .csect stuff[[rw]]
3834 [AC_DEFINE(HAVE_AS_REF, 1,
3835 [Define if your assembler supports .ref])])
3841 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3842 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3843 [ lw $4,%gp_rel(foo)($4)],,
3844 [if test x$target_cpu_default = x
3845 then target_cpu_default=MASK_EXPLICIT_RELOCS
3846 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3848 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3849 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3850 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3851 [Define if the assembler understands -mno-shared.])])
3853 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3854 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3855 [.gnu_attribute 4,1],,
3856 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3857 [Define if your assembler supports .gnu_attribute.])])
3859 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3860 gcc_cv_as_mips_dtprelword, [2,18,0],,
3861 [.section .tdata,"awT",@progbits
3865 .dtprelword x+0x8000],,
3866 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3867 [Define if your assembler supports .dtprelword.])])
3869 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3870 gcc_cv_as_mips_dspr1_mult,,,
3880 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3881 [Define if your assembler supports DSPR1 mult.])])
3883 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3884 gcc_cv_as_ld_jalr_reloc=no
3885 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3886 if test $in_tree_ld = yes ; then
3887 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3888 && test $in_tree_ld_is_elf = yes; then
3889 gcc_cv_as_ld_jalr_reloc=yes
3891 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3892 echo ' .ent x' > conftest.s
3893 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3894 echo ' ld $25,%call16(y)($28)' >> conftest.s
3895 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3896 echo '1: jalr $25' >> conftest.s
3897 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3898 echo '1: jalr $25' >> conftest.s
3899 echo ' .end x' >> conftest.s
3900 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3901 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3902 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3903 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3904 gcc_cv_as_ld_jalr_reloc=yes
3910 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3911 if test x$target_cpu_default = x; then
3912 target_cpu_default=MASK_RELAX_PIC_CALLS
3914 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3917 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3919 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3920 [gcc_cv_ld_mips_personality_relaxation],
3921 [gcc_cv_ld_mips_personality_relaxation=no
3922 if test $in_tree_ld = yes ; then
3923 if test "$gcc_cv_gld_major_version" -eq 2 \
3924 -a "$gcc_cv_gld_minor_version" -ge 21 \
3925 -o "$gcc_cv_gld_major_version" -gt 2; then
3926 gcc_cv_ld_mips_personality_relaxation=yes
3928 elif test x$gcc_cv_as != x \
3929 -a x$gcc_cv_ld != x \
3930 -a x$gcc_cv_readelf != x ; then
3931 cat > conftest.s <<EOF
3933 .cfi_personality 0x80,indirect_ptr
3940 .section .data,"aw",@progbits
3944 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3945 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3946 if $gcc_cv_readelf -d conftest 2>&1 \
3947 | grep TEXTREL > /dev/null 2>&1; then
3949 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3950 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3953 gcc_cv_ld_mips_personality_relaxation=yes
3957 rm -f conftest.s conftest.o conftest])
3958 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3959 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3960 [Define if your linker can relax absolute .eh_frame personality
3961 pointers into PC-relative form.])
3966 # Mips and HP-UX need the GNU assembler.
3967 # Linux on IA64 might be able to use the Intel assembler.
3970 mips*-*-* | *-*-hpux* )
3971 if test x$gas_flag = xyes \
3972 || test x"$host" != x"$build" \
3973 || test ! -x "$gcc_cv_as" \
3974 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3977 echo "*** This configuration requires the GNU assembler" >&2
3983 # ??? Not all targets support dwarf2 debug_line, even within a version
3984 # of gas. Moreover, we need to emit a valid instruction to trigger any
3985 # info to the output file. So, as supported targets are added to gas 2.11,
3986 # add some instruction here to (also) show we expect this might work.
3987 # ??? Once 2.11 is released, probably need to add first known working
3988 # version to the per-target configury.
3990 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3991 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4001 if test x"$insn" != x; then
4003 .file 1 \"conftest.s\"
4006 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4007 gcc_cv_as_dwarf2_debug_line,
4008 [elf,2,11,0],, [$conftest_s],
4009 [if test x$gcc_cv_objdump != x \
4010 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4011 | grep debug_line > /dev/null 2>&1; then
4012 gcc_cv_as_dwarf2_debug_line=yes
4015 # The .debug_line file table must be in the exact order that
4016 # we specified the files, since these indices are also used
4017 # by DW_AT_decl_file. Approximate this test by testing if
4018 # the assembler bitches if the same index is assigned twice.
4019 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4020 gcc_cv_as_dwarf2_file_buggy,,,
4024 if test $gcc_cv_as_dwarf2_debug_line = yes \
4025 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4026 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4027 [Define if your assembler supports dwarf2 .file/.loc directives,
4028 and preserves file table indices exactly as given.])
4031 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4032 gcc_cv_as_gdwarf2_flag,
4033 [elf,2,11,0], [--gdwarf2], [$insn],,
4034 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4035 [Define if your assembler supports the --gdwarf2 option.])])
4037 gcc_GAS_CHECK_FEATURE([--gstabs option],
4038 gcc_cv_as_gstabs_flag,
4039 [elf,2,11,0], [--gstabs], [$insn],
4040 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4041 # and warns about it, but still exits successfully. So check for
4043 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4045 else gcc_cv_as_gstabs_flag=yes
4047 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4048 [Define if your assembler supports the --gstabs option.])])
4050 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4051 gcc_cv_as_debug_prefix_map_flag,
4052 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4053 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4054 [Define if your assembler supports the --debug-prefix-map option.])])
4057 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4060 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4061 [Define if your assembler supports .lcomm with an alignment field.])])
4063 AC_ARG_ENABLE(gnu-unique-object,
4064 [AS_HELP_STRING([--enable-gnu-unique-object],
4065 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4066 [case $enable_gnu_unique_object in
4068 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4069 Valid choices are 'yes' and 'no'.]) ;;
4071 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4073 [.type foo, @gnu_unique_object],,
4074 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4075 [[if test x$host = x$build -a x$host = x$target &&
4076 ldd --version 2>/dev/null &&
4077 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4078 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4079 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4080 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4081 if test "$glibcnum" -ge 2011 ; then
4082 enable_gnu_unique_object=yes
4085 if test x$enable_gnu_unique_object = xyes; then
4086 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4087 [Define if your assembler supports @gnu_unique_object.])
4090 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4091 [gcc_cv_as_line_zero],
4092 [gcc_cv_as_line_zero=no
4093 if test $in_tree_gas = yes; then
4094 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4095 elif test "x$gcc_cv_as" != x; then
4096 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4097 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4098 test "x`cat conftest.out`" = x
4100 gcc_cv_as_line_zero=yes
4102 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4103 cat conftest.s >&AS_MESSAGE_LOG_FD
4104 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4105 cat conftest.out >&AS_MESSAGE_LOG_FD
4107 rm -f conftest.o conftest.s conftest.out
4109 if test "x$gcc_cv_as_line_zero" = xyes; then
4110 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4111 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4114 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4115 gcc_cv_ld_eh_frame_hdr=no
4116 if test $in_tree_ld = yes ; then
4117 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4118 && test $in_tree_ld_is_elf = yes; then
4119 gcc_cv_ld_eh_frame_hdr=yes
4121 elif test x$gcc_cv_ld != x; then
4122 if echo "$ld_ver" | grep GNU > /dev/null; then
4123 # Check if linker supports --eh-frame-hdr option
4124 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4125 gcc_cv_ld_eh_frame_hdr=yes
4130 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4131 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4132 gcc_cv_ld_eh_frame_hdr=yes
4138 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4139 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4140 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4141 [Define if your linker supports .eh_frame_hdr.])
4143 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4145 AC_MSG_CHECKING(linker position independent executable support)
4147 if test $in_tree_ld = yes ; then
4148 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4149 && test $in_tree_ld_is_elf = yes; then
4152 elif test x$gcc_cv_ld != x; then
4153 # Check if linker supports -pie option
4154 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4158 if test x"$gcc_cv_ld_pie" = xyes; then
4159 AC_DEFINE(HAVE_LD_PIE, 1,
4160 [Define if your linker supports -pie option.])
4162 AC_MSG_RESULT($gcc_cv_ld_pie)
4164 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4165 gcc_cv_ld_eh_gc_sections=no
4166 if test $in_tree_ld = yes ; then
4167 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4168 && test $in_tree_ld_is_elf = yes; then
4169 gcc_cv_ld_eh_gc_sections=yes
4171 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4172 cat > conftest.s <<EOF
4175 .type _start, @function
4178 .size _start, .-_start
4179 .section .text.foo,"ax",@progbits
4180 .type foo, @function
4184 .section .gcc_except_table.foo,"a",@progbits
4187 .section .eh_frame,"a",@progbits
4190 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4191 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4192 | grep "gc-sections option ignored" > /dev/null; then
4193 gcc_cv_ld_eh_gc_sections=no
4194 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4195 | grep gcc_except_table > /dev/null; then
4196 gcc_cv_ld_eh_gc_sections=yes
4197 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4198 if test x$gcc_cv_as_comdat_group != xyes; then
4199 gcc_cv_ld_eh_gc_sections=no
4200 cat > conftest.s <<EOF
4203 .type _start, @function
4206 .size _start, .-_start
4207 .section .gnu.linkonce.t.foo,"ax",@progbits
4208 .type foo, @function
4212 .section .gcc_except_table.foo,"a",@progbits
4215 .section .eh_frame,"a",@progbits
4218 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4219 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4220 | grep "gc-sections option ignored" > /dev/null; then
4221 gcc_cv_ld_eh_gc_sections=no
4222 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4223 | grep gcc_except_table > /dev/null; then
4224 gcc_cv_ld_eh_gc_sections=yes
4230 rm -f conftest.s conftest.o conftest
4234 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4235 gcc_cv_ld_eh_gc_sections=no
4238 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4239 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4240 [Define if your linker supports garbage collection of
4241 sections in presence of EH frames.])
4243 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4245 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4246 gcc_cv_ld_eh_gc_sections_bug=no
4247 if test $in_tree_ld = yes ; then
4248 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4249 && test $in_tree_ld_is_elf = yes; then
4250 gcc_cv_ld_eh_gc_sections_bug=yes
4252 elif test x$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
4253 gcc_cv_ld_eh_gc_sections_bug=yes
4254 cat > conftest.s <<EOF
4257 .type _start, @function
4260 .size _start, .-_start
4261 .section .text.startup.foo,"ax",@progbits
4262 .type foo, @function
4266 .section .gcc_except_table.foo,"a",@progbits
4269 .section .eh_frame,"a",@progbits
4272 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4273 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4274 | grep "gc-sections option ignored" > /dev/null; then
4276 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4277 | grep gcc_except_table > /dev/null; then
4278 gcc_cv_ld_eh_gc_sections_bug=no
4281 rm -f conftest.s conftest.o conftest
4283 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4284 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4285 [Define if your linker has buggy garbage collection of
4286 sections support when .text.startup.foo like sections are used.])
4288 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4294 AC_CACHE_CHECK(linker --as-needed support,
4295 gcc_cv_ld_as_needed,
4296 [gcc_cv_ld_as_needed=no
4297 if test $in_tree_ld = yes ; then
4298 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4299 && test $in_tree_ld_is_elf = yes; then
4300 gcc_cv_ld_as_needed=yes
4302 elif test x$gcc_cv_ld != x; then
4303 # Check if linker supports --as-needed and --no-as-needed options
4304 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4305 gcc_cv_ld_as_needed=yes
4309 if test x"$gcc_cv_ld_as_needed" = xyes; then
4310 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4311 [Define if your linker supports --as-needed and --no-as-needed options.])
4314 case "$target:$tm_file" in
4315 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4316 AC_CACHE_CHECK(linker support for omitting dot symbols,
4317 gcc_cv_ld_no_dot_syms,
4318 [gcc_cv_ld_no_dot_syms=no
4319 if test $in_tree_ld = yes ; then
4320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4321 gcc_cv_ld_no_dot_syms=yes
4323 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4324 cat > conftest1.s <<EOF
4328 cat > conftest2.s <<EOF
4329 .section ".opd","aw"
4334 .quad .LEfoo,.TOC.@tocbase,0
4340 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4341 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4342 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4343 gcc_cv_ld_no_dot_syms=yes
4345 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4348 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4349 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4350 [Define if your PowerPC64 linker only needs function descriptor syms.])
4353 AC_CACHE_CHECK(linker large toc support,
4354 gcc_cv_ld_large_toc,
4355 [gcc_cv_ld_large_toc=no
4356 if test $in_tree_ld = yes ; then
4357 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4358 gcc_cv_ld_large_toc=yes
4360 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4361 cat > conftest.s <<EOF
4362 .section ".tbss","awT",@nobits
4368 addis 9,13,ie0@got@tprel@ha
4369 ld 9,ie0@got@tprel@l(9)
4371 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4372 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4373 gcc_cv_ld_large_toc=yes
4375 rm -f conftest conftest.o conftest.s
4378 if test x"$gcc_cv_ld_large_toc" = xyes; then
4379 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4380 [Define if your PowerPC64 linker supports a large TOC.])
4385 AC_CACHE_CHECK(linker --build-id support,
4387 [gcc_cv_ld_buildid=no
4388 if test $in_tree_ld = yes ; then
4389 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4390 "$gcc_cv_gld_minor_version" -ge 18 -o \
4391 "$gcc_cv_gld_major_version" -gt 2 \
4392 && test $in_tree_ld_is_elf = yes; then
4393 gcc_cv_ld_buildid=yes
4395 elif test x$gcc_cv_ld != x; then
4396 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4397 gcc_cv_ld_buildid=yes
4400 if test x"$gcc_cv_ld_buildid" = xyes; then
4401 AC_DEFINE(HAVE_LD_BUILDID, 1,
4402 [Define if your linker supports --build-id.])
4405 AC_ARG_ENABLE(linker-build-id,
4406 [AS_HELP_STRING([--enable-linker-build-id],
4407 [compiler will always pass --build-id to linker])],
4409 enable_linker_build_id=no)
4411 if test x"$enable_linker_build_id" = xyes; then
4412 if test x"$gcc_cv_ld_buildid" = xyes; then
4413 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4414 [Define if gcc should always pass --build-id to linker.])
4416 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4420 # In binutils 2.21, GNU ld gained support for new emulations fully
4421 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4422 AC_CACHE_CHECK(linker *_sol2 emulation support,
4423 gcc_cv_ld_sol2_emulation,
4424 [gcc_cv_ld_sol2_emulation=no
4425 if test $in_tree_ld = yes ; then
4426 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4427 "$gcc_cv_gld_minor_version" -ge 21 -o \
4428 "$gcc_cv_gld_major_version" -gt 2 \
4429 && test $in_tree_ld_is_elf = yes; then
4430 gcc_cv_ld_sol2_emulation=yes
4432 elif test x$gcc_cv_ld != x; then
4433 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4434 grep _sol2 > /dev/null; then
4435 gcc_cv_ld_sol2_emulation=yes
4438 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4439 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4440 [Define if your linker supports the *_sol2 emulations.])
4443 AC_CACHE_CHECK(linker --sysroot support,
4445 [gcc_cv_ld_sysroot=no
4446 if test $in_tree_ld = yes ; then
4447 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4448 gcc_cv_ld_sysroot=yes
4450 elif test x$gcc_cv_ld != x; then
4451 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4452 gcc_cv_ld_sysroot=yes
4455 if test x"$gcc_cv_ld_sysroot" = xyes; then
4456 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4457 [Define if your linker supports --sysroot.])
4460 if test x$with_sysroot = x && test x$host = x$target \
4461 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4462 && test "$prefix" != "NONE"; then
4463 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4464 [Define to PREFIX/include if cpp should also search that directory.])
4467 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4468 if test "x$with_headers" != x; then
4469 target_header_dir=$with_headers
4470 elif test "x$with_sysroot" = x; then
4471 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4472 elif test "x$with_build_sysroot" != "x"; then
4473 target_header_dir="${with_build_sysroot}/usr/include"
4474 elif test "x$with_sysroot" = xyes; then
4475 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4477 target_header_dir="${with_sysroot}/usr/include"
4480 target_header_dir=/usr/include
4483 # Test for stack protector support in target C library.
4484 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4485 gcc_cv_libc_provides_ssp,
4486 [gcc_cv_libc_provides_ssp=no
4488 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4489 [# glibc 2.4 and later provides __stack_chk_fail and
4490 # either __stack_chk_guard, or TLS access to stack guard canary.
4491 if test -f $target_header_dir/features.h \
4492 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4493 $target_header_dir/features.h > /dev/null; then
4494 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4495 $target_header_dir/features.h > /dev/null; then
4496 gcc_cv_libc_provides_ssp=yes
4497 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4498 $target_header_dir/features.h > /dev/null \
4499 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4500 $target_header_dir/features.h > /dev/null; then
4501 gcc_cv_libc_provides_ssp=yes
4502 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4503 $target_header_dir/features.h > /dev/null && \
4504 test -f $target_header_dir/bits/uClibc_config.h && \
4505 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4506 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4507 gcc_cv_libc_provides_ssp=yes
4512 # Avoid complicated tests (see
4513 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4514 # simply assert that glibc does provide this, which is true for all
4515 # realistically usable GNU/Hurd configurations.
4516 gcc_cv_libc_provides_ssp=yes;;
4517 *-*-darwin* | *-*-freebsd*)
4518 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4519 [echo "no __stack_chk_fail on this target"])
4521 *) gcc_cv_libc_provides_ssp=no ;;
4524 if test x$gcc_cv_libc_provides_ssp = xyes; then
4525 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4526 [Define if your target C library provides stack protector support])
4529 # Test for <sys/sdt.h> on the target.
4530 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4531 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4533 if test -f $target_header_dir/sys/sdt.h; then
4534 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4535 [Define if your target C library provides sys/sdt.h])
4537 AC_MSG_RESULT($have_sys_sdt_h)
4539 # Check if TFmode long double should be used by default or not.
4540 # Some glibc targets used DFmode long double, but with glibc 2.4
4541 # and later they can use TFmode.
4543 powerpc*-*-linux* | \
4547 AC_ARG_WITH(long-double-128,
4548 [AS_HELP_STRING([--with-long-double-128],
4549 [use 128-bit long double by default])],
4550 gcc_cv_target_ldbl128="$with_long_double_128",
4551 [[gcc_cv_target_ldbl128=no
4552 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4553 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4554 && gcc_cv_target_ldbl128=yes
4558 if test x$gcc_cv_target_ldbl128 = xyes; then
4559 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4560 [Define if TFmode long double should be the default])
4563 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4564 gcc_cv_target_dl_iterate_phdr=unknown
4567 # <link.h> needs both a dl_iterate_phdr declaration and support for
4568 # compilation with largefile support.
4569 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4570 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4571 gcc_cv_target_dl_iterate_phdr=yes
4573 gcc_cv_target_dl_iterate_phdr=no
4577 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4578 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4579 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4580 [Define if your target C library provides the `dl_iterate_phdr' function.])
4582 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4584 # Find out what GC implementation we want, or may, use.
4586 [AS_HELP_STRING([--with-gc={page,zone}],
4587 [choose the garbage collection mechanism to use
4588 with the compiler])],
4595 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4598 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4603 echo "Using $GGC for garbage collection."
4605 # Libraries to use on the host. This will normally be set by the top
4606 # level Makefile. Here we simply capture the value for our Makefile.
4607 if test -z "${HOST_LIBS+set}"; then
4612 # Use the system's zlib library.
4614 zlibinc="-I\$(srcdir)/../zlib"
4615 AC_ARG_WITH(system-zlib,
4616 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4623 dnl Very limited version of automake's enable-maintainer-mode
4625 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4626 dnl maintainer-mode is disabled by default
4627 AC_ARG_ENABLE(maintainer-mode,
4628 [AS_HELP_STRING([--enable-maintainer-mode],
4629 [enable make rules and dependencies not useful
4630 (and sometimes confusing) to the casual installer])],
4631 maintainer_mode=$enableval,
4634 AC_MSG_RESULT($maintainer_mode)
4636 if test "$maintainer_mode" = "yes"; then
4647 # Make empty files to contain the specs and options for each language.
4648 # Then add #include lines to for a compiler that has specs and/or options.
4654 # These (without "all_") are set in each config-lang.in.
4655 # `language' must be a single word so is spelled singularly.
4658 all_outputs='Makefile'
4659 # List of language makefile fragments.
4661 # Additional files for gengtype
4662 all_gtfiles="$target_gtfiles"
4664 # These are the languages that are set in --enable-languages,
4665 # and are available in the GCC tree.
4666 all_selected_languages=
4668 # Add the language fragments.
4669 # Languages are added via two mechanisms. Some information must be
4670 # recorded in makefile variables, these are defined in config-lang.in.
4671 # We accumulate them and plug them into the main Makefile.
4672 # The other mechanism is a set of hooks for each of the main targets
4673 # like `clean', `install', etc.
4675 language_hooks="Make-hooks"
4677 for lang in ${srcdir}/*/config-lang.in
4680 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4682 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4683 if test "x$lang_alias" = x
4685 echo "$lang doesn't set \$language." 1>&2
4688 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4689 subdirs="$subdirs $subdir"
4691 # $gcc_subdir is where the gcc integration files are to be found
4692 # for a language, both for internal compiler purposes (compiler
4693 # sources implementing front-end to GCC tree converters), and for
4694 # build infrastructure purposes (Make-lang.in, etc.)
4696 # This will be <subdir> (relative to $srcdir) if a line like
4697 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4698 # is found in <langdir>/config-lang.in, and will remain <langdir>
4701 # Except for the language alias (fetched above), the regular
4702 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4703 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4704 # only this and the language alias.
4706 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4707 if [ "$gcc_subdir" = "" ]; then
4708 gcc_subdir="$subdir"
4711 case ",$enable_languages," in
4713 all_selected_languages="$all_selected_languages $lang_alias"
4714 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4715 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4727 . ${srcdir}/$gcc_subdir/config-lang.in
4728 if test "x$language" = x
4730 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4735 case ",$enable_languages," in
4738 for i in $subdir_requires; do
4739 test -f "${srcdir}/$i/config-lang.in" && continue
4747 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4748 if test -f $srcdir/$gcc_subdir/lang.opt; then
4749 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4750 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4752 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4753 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4755 all_languages="$all_languages $language"
4756 all_compilers="$all_compilers $compilers"
4757 all_outputs="$all_outputs $outputs"
4758 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4759 case ",$enable_languages," in
4761 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4763 AC_SUBST(enable_lto)
4769 # Pick up gtfiles for c
4771 . ${srcdir}/c-config-lang.in
4772 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4775 for language in $all_selected_languages
4777 check_languages="$check_languages check-$language"
4780 # We link each language in with a set of hooks, reached indirectly via
4781 # lang.${target}. Only do so for selected languages.
4785 target_list="all.cross start.encap rest.encap tags \
4786 install-common install-man install-info install-pdf install-html dvi \
4787 pdf html uninstall info man srcextra srcman srcinfo \
4788 mostlyclean clean distclean maintainer-clean install-plugin"
4790 for t in $target_list
4793 for lang in $all_selected_languages
4797 echo "lang.$t: $x" >> Make-hooks
4801 # Option include files
4804 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4805 option_includes="option-includes.mk"
4806 AC_SUBST_FILE(option_includes)
4814 echo "dir ." > .gdbinit
4815 echo "dir ${srcdir}" >> .gdbinit
4816 if test x$gdb_needs_out_file_path = xyes
4818 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4820 if test "x$subdirs" != x; then
4823 echo "dir ${srcdir}/$s" >> .gdbinit
4826 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4828 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4829 AC_SUBST(gcc_tooldir)
4832 # Find a directory in which to install a shared libgcc.
4834 AC_ARG_ENABLE(version-specific-runtime-libs,
4835 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4836 [specify that runtime libraries should be
4837 installed in a compiler-specific directory])])
4839 AC_ARG_WITH(slibdir,
4840 [AS_HELP_STRING([--with-slibdir=DIR], [shared libraries in DIR @<:@LIBDIR@:>@])],
4841 slibdir="$with_slibdir",
4842 if test "${enable_version_specific_runtime_libs+set}" = set; then
4843 slibdir='$(libsubdir)'
4844 elif test "$host" != "$target"; then
4845 slibdir='$(build_tooldir)/lib'
4851 # Substitute configuration variables
4854 AC_SUBST(all_compilers)
4855 AC_SUBST(all_gtfiles)
4856 AC_SUBST(all_lang_makefrags)
4857 AC_SUBST(all_languages)
4858 AC_SUBST(all_selected_languages)
4859 AC_SUBST(build_exeext)
4860 AC_SUBST(build_install_headers_dir)
4861 AC_SUBST(build_xm_file_list)
4862 AC_SUBST(build_xm_include_list)
4863 AC_SUBST(build_xm_defines)
4864 AC_SUBST(build_file_translate)
4865 AC_SUBST(check_languages)
4866 AC_SUBST(cpp_install_dir)
4867 AC_SUBST(xmake_file)
4868 AC_SUBST(tmake_file)
4869 AC_SUBST(TM_ENDIAN_CONFIG)
4870 AC_SUBST(TM_MULTILIB_CONFIG)
4871 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4872 AC_SUBST(extra_gcc_objs)
4873 AC_SUBST(user_headers_inc_next_pre)
4874 AC_SUBST(user_headers_inc_next_post)
4875 AC_SUBST(extra_headers_list)
4876 AC_SUBST(extra_objs)
4877 AC_SUBST(extra_parts)
4878 AC_SUBST(extra_passes)
4879 AC_SUBST(extra_programs)
4880 AC_SUBST(float_h_file)
4881 AC_SUBST(gcc_config_arguments)
4882 AC_SUBST(gcc_gxx_include_dir)
4883 AC_SUBST(host_exeext)
4884 AC_SUBST(host_xm_file_list)
4885 AC_SUBST(host_xm_include_list)
4886 AC_SUBST(host_xm_defines)
4887 AC_SUBST(out_host_hook_obj)
4889 AC_SUBST(lang_opt_files)
4890 AC_SUBST(lang_specs_files)
4891 AC_SUBST(lang_tree_files)
4892 AC_SUBST(local_prefix)
4894 AC_SUBST(objc_boehm_gc)
4896 AC_SUBST(out_object_file)
4897 AC_SUBST(common_out_file)
4898 AC_SUBST(common_out_object_file)
4899 AC_SUBST(thread_file)
4900 AC_SUBST(tm_file_list)
4901 AC_SUBST(tm_include_list)
4902 AC_SUBST(tm_defines)
4903 AC_SUBST(libgcc_tm_file_list)
4904 AC_SUBST(libgcc_tm_include_list)
4905 AC_SUBST(tm_p_file_list)
4906 AC_SUBST(tm_p_include_list)
4907 AC_SUBST(xm_file_list)
4908 AC_SUBST(xm_include_list)
4909 AC_SUBST(xm_defines)
4910 AC_SUBST(use_gcc_stdint)
4911 AC_SUBST(c_target_objs)
4912 AC_SUBST(cxx_target_objs)
4913 AC_SUBST(fortran_target_objs)
4914 AC_SUBST(target_cpu_default)
4916 AC_SUBST_FILE(language_hooks)
4919 if test x${build} = x${host} ; then
4920 if test x${host} = x${target} ; then
4921 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4923 echo "Links are now set up to build a cross-compiler" 1>&2
4924 echo " from ${host} to ${target}." 1>&2
4927 if test x${host} = x${target} ; then
4928 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4929 echo " for ${target}." 1>&2
4931 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4932 echo " from ${host} to ${target}." 1>&2
4936 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4937 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4939 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4940 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4942 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4943 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4944 if test "x${CLOOGLIBS}" != "x" ; then
4945 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4948 # Check for plugin support
4949 AC_ARG_ENABLE(plugin,
4950 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
4951 enable_plugin=$enableval,
4952 enable_plugin=yes; default_plugin=yes)
4958 if test x$build = x$host; then
4959 export_sym_check="nm${exeext} -g"
4960 elif test x$host = x$target; then
4961 export_sym_check="$gcc_cv_nm -g"
4967 if test x$build = x$host; then
4968 export_sym_check="objdump${exeext} -T"
4969 elif test x$host = x$target; then
4970 export_sym_check="$gcc_cv_objdump -T"
4977 if test x"$enable_plugin" = x"yes"; then
4979 AC_MSG_CHECKING([for exported symbols])
4980 if test "x$export_sym_check" != x; then
4981 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4982 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4983 if $export_sym_check conftest | grep foobar > /dev/null; then
4984 : # No need to use a flag
4985 AC_MSG_RESULT([yes])
4987 AC_MSG_RESULT([yes])
4988 AC_MSG_CHECKING([for -rdynamic])
4989 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4990 if $export_sym_check conftest | grep foobar > /dev/null; then
4992 pluginlibs="-rdynamic"
4997 AC_MSG_RESULT([$plugin_rdynamic])
5000 AC_MSG_RESULT([unable to check])
5005 AC_SEARCH_LIBS([dlopen], [dl])
5006 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5007 pluginlibs="$pluginlibs -ldl"
5011 # Check that we can build shared objects with -fPIC -shared
5012 saved_LDFLAGS="$LDFLAGS"
5013 saved_CFLAGS="$CFLAGS"
5016 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5017 CFLAGS="$CFLAGS -fPIC"
5018 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5021 CFLAGS="$CFLAGS -fPIC"
5022 LDFLAGS="$LDFLAGS -fPIC -shared"
5025 AC_MSG_CHECKING([for -fPIC -shared])
5027 [extern int X;],[return X == 0;],
5028 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5029 [AC_MSG_RESULT([no]); have_pic_shared=no])
5030 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5034 LDFLAGS="$saved_LDFLAGS"
5035 CFLAGS="$saved_CFLAGS"
5037 # If plugin support had been requested but not available, fail.
5038 if test x"$enable_plugin" = x"no" ; then
5039 if test x"$default_plugin" != x"yes"; then
5041 Building GCC with plugin support requires a host that supports
5042 -fPIC, -shared, -ldl and -rdynamic.])
5047 AC_SUBST(pluginlibs)
5048 AC_SUBST(enable_plugin)
5049 if test x"$enable_plugin" = x"yes"; then
5050 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5054 AC_ARG_ENABLE(libquadmath-support,
5055 [AS_HELP_STRING([--disable-libquadmath-support],
5056 [disable libquadmath support for Fortran])],
5057 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5058 ENABLE_LIBQUADMATH_SUPPORT=yes)
5059 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5060 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5061 [Define to 1 to enable libquadmath support])
5065 # Specify what hash style to use by default.
5066 AC_ARG_WITH([linker-hash-style],
5067 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5068 [specify the linker hash style])],
5069 [case x"$withval" in
5071 LINKER_HASH_STYLE=sysv
5074 LINKER_HASH_STYLE=gnu
5077 LINKER_HASH_STYLE=both
5080 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5083 [LINKER_HASH_STYLE=''])
5084 if test x"${LINKER_HASH_STYLE}" != x; then
5085 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5086 [The linker hash style])
5089 # Configure the subdirectories
5090 # AC_CONFIG_SUBDIRS($subdirs)
5092 # Create the Makefile
5093 # and configure language subdirectories
5094 AC_CONFIG_FILES($all_outputs)
5096 AC_CONFIG_COMMANDS([default],
5098 case ${CONFIG_HEADERS} in
5099 *auto-host.h:config.in*)
5102 # Make sure all the subdirs exist.
5103 for d in $subdirs doc build common c-family
5105 test -d $d || mkdir $d
5108 [subdirs='$subdirs'])