2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 # 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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 # autoconf is lame and doesn't give us any substitution variable for this.
280 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
281 NO_MINUS_C_MINUS_O=yes
283 OUTPUT_OPTION='-o $@'
285 AC_SUBST(NO_MINUS_C_MINUS_O)
286 AC_SUBST(OUTPUT_OPTION)
288 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
289 # optimizations to be activated explicitly by the toplevel.
292 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
296 # -------------------------
297 # Check C compiler features
298 # -------------------------
303 # sizeof(char) is 1 by definition.
304 AC_CHECK_SIZEOF(void *)
305 AC_CHECK_SIZEOF(short)
307 AC_CHECK_SIZEOF(long)
308 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
309 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
311 # ---------------------
312 # Warnings and checking
313 # ---------------------
315 # Check $CC warning features (if it's GCC).
316 # We want to use -pedantic, but we don't want warnings about
320 # So, we only use -pedantic if we can disable those warnings.
322 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
323 -Wmissing-prototypes], [loose_warn])
324 ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
325 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
326 -Wmissing-format-attribute], [strict_warn])
327 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
328 -Wno-overlength-strings], [strict_warn])
329 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
331 # The above macros do nothing if the compiler is not GCC. However, the
332 # Makefile has more goo to add other flags, so this variabl is used to
333 # enables warnings only for GCC.
335 if test "x$GCC" = "xyes"; then
336 warn_cflags='$(GCC_WARN_CFLAGS)'
338 AC_SUBST(warn_cflags)
340 # Enable expensive internal checks
342 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
346 AC_ARG_ENABLE(checking,
347 [ --enable-checking[=LIST]
348 enable expensive run-time checks. With LIST,
349 enable only specific categories of checks.
350 Categories are: yes,no,all,none,release.
351 Flags are: assert,df,fold,gc,gcac,misc,
352 rtlflag,rtl,runtime,tree,valgrind,types.],
353 [ac_checking_flags="${enableval}"],[
354 # Determine the default checks.
355 if test x$is_release = x ; then
356 ac_checking_flags=yes
358 ac_checking_flags=release
360 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
361 for check in release $ac_checking_flags
364 # these set all the flags to specific states
365 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
366 ac_fold_checking= ; ac_gc_checking=1 ;
367 ac_gc_always_collect= ; ac_rtl_checking= ;
368 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
369 ac_tree_checking=1 ; ac_valgrind_checking= ;
370 ac_types_checking= ;;
371 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
372 ac_fold_checking= ; ac_gc_checking= ;
373 ac_gc_always_collect= ; ac_rtl_checking= ;
374 ac_rtlflag_checking= ; ac_runtime_checking= ;
375 ac_tree_checking= ; ac_valgrind_checking= ;
376 ac_types_checking= ;;
377 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
378 ac_fold_checking=1 ; ac_gc_checking=1 ;
379 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
380 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
381 ac_tree_checking=1 ; ac_valgrind_checking= ;
382 ac_types_checking=1 ;;
383 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
384 ac_fold_checking= ; ac_gc_checking= ;
385 ac_gc_always_collect= ; ac_rtl_checking= ;
386 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
387 ac_tree_checking= ; ac_valgrind_checking= ;
388 ac_types_checking= ;;
389 # these enable particular checks
390 assert) ac_assert_checking=1 ;;
391 df) ac_df_checking=1 ;;
392 fold) ac_fold_checking=1 ;;
393 gc) ac_gc_checking=1 ;;
394 gcac) ac_gc_always_collect=1 ;;
395 misc) ac_checking=1 ;;
396 rtl) ac_rtl_checking=1 ;;
397 rtlflag) ac_rtlflag_checking=1 ;;
398 runtime) ac_runtime_checking=1 ;;
399 tree) ac_tree_checking=1 ;;
400 types) ac_types_checking=1 ;;
401 valgrind) ac_valgrind_checking=1 ;;
402 *) AC_MSG_ERROR(unknown check category $check) ;;
408 if test x$ac_checking != x ; then
409 AC_DEFINE(ENABLE_CHECKING, 1,
410 [Define if you want more run-time sanity checks. This one gets a grab
411 bag of miscellaneous but relatively cheap checks.])
412 nocommon_flag=-fno-common
414 AC_SUBST(nocommon_flag)
415 if test x$ac_df_checking != x ; then
416 AC_DEFINE(ENABLE_DF_CHECKING, 1,
417 [Define if you want more run-time sanity checks for dataflow.])
419 if test x$ac_assert_checking != x ; then
420 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
421 [Define if you want assertions enabled. This is a cheap check.])
423 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
424 if test x$ac_runtime_checking != x ; then
425 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
426 [Define if you want runtime assertions enabled. This is a cheap check.])
428 if test x$ac_tree_checking != x ; then
429 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
430 [Define if you want all operations on trees (the basic data
431 structure of the front ends) to be checked for dynamic type safety
432 at runtime. This is moderately expensive. The tree browser debugging
433 routines will also be enabled by this option.
435 TREEBROWSER=tree-browser.o
437 if test x$ac_types_checking != x ; then
438 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
439 [Define if you want all gimple types to be verified after gimplifiation.
443 AC_SUBST(TREEBROWSER)
444 if test x$ac_rtl_checking != x ; then
445 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
446 [Define if you want all operations on RTL (the basic data structure
447 of the optimizer and back end) to be checked for dynamic type safety
448 at runtime. This is quite expensive.])
450 if test x$ac_rtlflag_checking != x ; then
451 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
452 [Define if you want RTL flag accesses to be checked against the RTL
453 codes that are supported for each access macro. This is relatively
456 if test x$ac_gc_checking != x ; then
457 AC_DEFINE(ENABLE_GC_CHECKING, 1,
458 [Define if you want the garbage collector to do object poisoning and
459 other memory allocation checks. This is quite expensive.])
461 if test x$ac_gc_always_collect != x ; then
462 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
463 [Define if you want the garbage collector to operate in maximally
464 paranoid mode, validating the entire heap and collecting garbage at
465 every opportunity. This is extremely expensive.])
467 if test x$ac_fold_checking != x ; then
468 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
469 [Define if you want fold checked that it never destructs its argument.
470 This is quite expensive.])
472 valgrind_path_defines=
475 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
476 dnl # an if statement. This was the source of very frustrating bugs
477 dnl # in converting to autoconf 2.5x!
478 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
480 if test x$ac_valgrind_checking != x ; then
481 # It is certainly possible that there's valgrind but no valgrind.h.
482 # GCC relies on making annotations so we must have both.
483 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
484 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
485 [[#include <valgrind/memcheck.h>
486 #ifndef VALGRIND_DISCARD
487 #error VALGRIND_DISCARD not defined
489 [gcc_cv_header_valgrind_memcheck_h=yes],
490 [gcc_cv_header_valgrind_memcheck_h=no])
491 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
492 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
493 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
494 [[#include <memcheck.h>
495 #ifndef VALGRIND_DISCARD
496 #error VALGRIND_DISCARD not defined
498 [gcc_cv_header_memcheck_h=yes],
499 [gcc_cv_header_memcheck_h=no])
500 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
501 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
502 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
503 if test "x$valgrind_path" = "x" \
504 || (test $have_valgrind_h = no \
505 && test $gcc_cv_header_memcheck_h = no \
506 && test $gcc_cv_header_valgrind_memcheck_h = no); then
507 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
509 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
510 valgrind_command="$valgrind_path -q"
511 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
512 [Define if you want to run subprograms and generated programs
513 through valgrind (a memory checker). This is extremely expensive.])
514 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
515 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
516 [Define if valgrind's valgrind/memcheck.h header is installed.])
518 if test $gcc_cv_header_memcheck_h = yes; then
519 AC_DEFINE(HAVE_MEMCHECK_H, 1,
520 [Define if valgrind's memcheck.h header is installed.])
523 AC_SUBST(valgrind_path_defines)
524 AC_SUBST(valgrind_command)
526 AC_ARG_ENABLE(mapped-location,
527 [ --enable-mapped-location location_t is fileline integer cookie],,
528 enable_mapped_location=no)
530 if test "$enable_mapped_location" = yes ; then
531 AC_DEFINE(USE_MAPPED_LOCATION, 1,
532 [Define if location_t is fileline integer cookie.])
535 # Enable code coverage collection
536 AC_ARG_ENABLE(coverage,
537 [ --enable-coverage[=LEVEL]
538 enable compiler's code coverage collection.
539 Use to measure compiler performance and locate
540 unused parts of the compiler. With LEVEL, specify
541 optimization. Values are opt, noopt,
543 [case "${enableval}" in
545 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
548 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
551 # a.k.a. --disable-coverage
555 AC_MSG_ERROR(unknown coverage setting $enableval)
559 AC_SUBST(coverage_flags)
561 AC_ARG_ENABLE(gather-detailed-mem-stats,
562 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
563 [enable_gather_detailed_mem_stats=no])
564 if test x$enable_gather_detailed_mem_stats = xyes ; then
565 AC_DEFINE(GATHER_STATISTICS, 1,
566 [Define to enable detailed memory allocation stats gathering.])
569 # -------------------------------
570 # Miscenalleous configure options
571 # -------------------------------
575 [ --with-stabs arrange to use stabs instead of host debug format],
579 # Determine whether or not multilibs are enabled.
580 AC_ARG_ENABLE(multilib,
581 [ --enable-multilib enable library support for multiple ABIs],
582 [], [enable_multilib=yes])
583 AC_SUBST(enable_multilib)
585 # Enable __cxa_atexit for C++.
586 AC_ARG_ENABLE(__cxa_atexit,
587 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
590 # Enable C extension for decimal float if target supports it.
591 AC_ARG_ENABLE(decimal-float,
592 [ --enable-decimal-float={no,yes,bid,dpd}
593 enable decimal float extension to C. Selecting 'bid'
594 or 'dpd' choses which decimal floating point format
597 case $enable_decimal_float in
598 yes | no | bid | dpd) ;;
599 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
600 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
605 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
606 enable_decimal_float=yes
609 AC_MSG_WARN(decimal float is not supported for this target, ignored)
610 enable_decimal_float=no
615 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
616 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
617 [Define to 1 to enable decimal float extension to C.])
619 # x86's use BID format instead of DPD
620 case x$enable_decimal_float in
623 i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=bid
627 enable_decimal_float=dpd
632 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
633 # dependency on libdecnumber.
634 enable_decimal_float=dpd
637 AC_SUBST(enable_decimal_float)
639 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
640 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
641 [Define to 1 to specify that we are using the BID decimal floating
642 point format instead of DPD])
645 # Pass with no value to take the default
646 # Pass with a value to specify a thread package
647 AC_ARG_ENABLE(threads,
648 [ --enable-threads enable thread usage for target GCC
649 --enable-threads=LIB use LIB thread package for target GCC],,
653 [ --enable-tls enable or disable generation of tls code
654 overriding the assembler check for tls support],
658 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
659 Valid choices are 'yes' and 'no'.]) ;;
663 AC_ARG_ENABLE(objc-gc,
664 [ --enable-objc-gc enable the use of Boehm's garbage collector with
665 the GNU Objective-C runtime],
666 if test x$enable_objc_gc = xno; then
674 [ --with-dwarf2 force the default debug format to be DWARF 2],
675 dwarf2="$with_dwarf2",
678 AC_ARG_ENABLE(shared,
679 [ --disable-shared don't provide a shared libgcc],
681 case $enable_shared in
685 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
686 for pkg in $enableval; do
687 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
694 ], [enable_shared=yes])
695 AC_SUBST(enable_shared)
697 AC_ARG_WITH(build-sysroot,
698 [ --with-build-sysroot=sysroot
699 use sysroot as the system root during the build])
702 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
704 case ${with_sysroot} in
705 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
706 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
709 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
710 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
712 if test "x$prefix" = xNONE; then
713 test_prefix=/usr/local
717 if test "x$exec_prefix" = xNONE; then
718 test_exec_prefix=$test_prefix
720 test_exec_prefix=$exec_prefix
722 case ${TARGET_SYSTEM_ROOT} in
723 "${test_prefix}"|"${test_prefix}/"*|\
724 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
725 '${prefix}'|'${prefix}/'*|\
726 '${exec_prefix}'|'${exec_prefix}/'*)
727 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
728 TARGET_SYSTEM_ROOT_DEFINE="$t"
733 TARGET_SYSTEM_ROOT_DEFINE=
734 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
736 AC_SUBST(TARGET_SYSTEM_ROOT)
737 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
738 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
740 # Build with intermodule optimisations
741 AC_ARG_ENABLE(intermodule,
742 [ --enable-intermodule build the compiler in one step],
743 [case ${enable_intermodule} in
744 yes) onestep="-onestep";;
750 # Sanity check enable_languages in case someone does not run the toplevel
751 # configure # script.
752 AC_ARG_ENABLE(languages,
753 [ --enable-languages=LIST specify which front-ends to build],
754 [case ,${enable_languages}, in
756 # go safe -- we cannot be much sure without the toplevel
758 # analysis of which target libs are present and usable
762 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
767 enable_languages=c,${enable_languages}
770 [enable_languages=c])
772 # Used by documentation targets
773 AC_SUBST(datarootdir)
777 # -------------------------
778 # Checks for other programs
779 # -------------------------
783 # Find some useful tools
785 # We need awk to create options.c and options.h.
786 # Bail out if it's missing.
788 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
796 # By default, the Darwin ranlib will not treat common symbols as
797 # definitions when building the archive table of contents. Other
798 # ranlibs do that; pass an option to the Darwin ranlib that makes
799 # it behave similarly.
805 AC_SUBST(ranlib_flags)
809 # See if cmp has --ignore-initial.
810 gcc_AC_PROG_CMP_IGNORE_INITIAL
812 # See if we have the mktemp command.
813 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
815 # See if makeinfo has been installed and is modern enough
816 # that we can use it.
817 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
818 [GNU texinfo.* \([0-9][0-9.]*\)],
820 if test $gcc_cv_prog_makeinfo_modern = no; then
822 *** Makeinfo is missing or too old.
823 *** Info documentation will not be built.])
830 # Is pod2man recent enough to regenerate manpages?
831 AC_MSG_CHECKING([for recent Pod::Man])
832 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
834 GENERATED_MANPAGES=generated-manpages
839 AC_SUBST(GENERATED_MANPAGES)
841 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
844 dnl Don't use AC_PROG_LEX; we insist on flex.
845 dnl LEXLIB is not useful in gcc.
846 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
849 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
851 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
852 # check for build == host before using them.
855 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
856 && test -d ../binutils ; then
857 NM='$(objdir)/../binutils/nm-new'
859 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
863 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
864 && test -d ../binutils ; then
865 AR='$(objdir)/../binutils/ar'
867 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
871 # --------------------
872 # Checks for C headers
873 # --------------------
875 AC_MSG_CHECKING(for GNU C library)
876 AC_CACHE_VAL(gcc_cv_glibc,
877 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
878 [[#include <features.h>]], [[
879 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
880 #error Not a GNU C library system
884 AC_MSG_RESULT($gcc_cv_glibc)
885 if test $gcc_cv_glibc = yes; then
886 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
889 # Need to reject headers which give warnings, so that the -Werror bootstrap
890 # works later. *sigh* This needs to come before all header checks.
897 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
898 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
899 sys/resource.h sys/param.h sys/times.h sys/stat.h \
900 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
902 # Check for thread headers.
903 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
904 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
906 # These tests can't be done till we know if we have limits.h.
915 # These libraries may be used by collect2.
916 # We may need a special search path to get them linked.
917 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
919 for libs in '' -lld -lmld \
920 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
921 '-L/usr/lib/cmplrs/cc3.11 -lmld'
924 AC_TRY_LINK_FUNC(ldopen,
925 [gcc_cv_collect2_libs="$libs"; break])
928 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
929 case $gcc_cv_collect2_libs in
931 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
933 AC_SUBST(COLLECT2_LIBS)
935 # When building Ada code on Alpha, we need exc_resume which is usually in
936 # -lexc. So test for it.
939 AC_SEARCH_LIBS(exc_resume, exc)
942 AC_SUBST(GNAT_LIBEXC)
944 # Some systems put ldexp and frexp in libm instead of libc; assume
945 # they're both in the same place. jcf-dump needs them.
948 AC_SEARCH_LIBS(ldexp, m)
953 # Use <inttypes.h> only if it exists,
954 # doesn't clash with <sys/types.h>, and declares intmax_t.
955 AC_MSG_CHECKING(for inttypes.h)
956 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
957 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
958 [[#include <sys/types.h>
959 #include <inttypes.h>]],
960 [[intmax_t i = -1;]])],
961 [gcc_cv_header_inttypes_h=yes],
962 [gcc_cv_header_inttypes_h=no])])
963 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
964 if test $gcc_cv_header_inttypes_h = yes; then
965 AC_DEFINE(HAVE_INTTYPES_H, 1,
966 [Define if you have a working <inttypes.h> header file.])
969 dnl Disabled until we have a complete test for buggy enum bitfields.
970 dnl gcc_AC_C_ENUM_BF_UNSIGNED
972 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
973 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
974 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
975 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
976 putchar_unlocked putc_unlocked)
977 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
978 sysconf strsignal getrusage nl_langinfo scandir alphasort \
979 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
982 if test x$ac_cv_func_mbstowcs = xyes; then
983 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
984 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
990 [gcc_cv_func_mbstowcs_works=yes],
991 [gcc_cv_func_mbstowcs_works=no],
992 [gcc_cv_func_mbstowcs_works=yes])])
993 if test x$gcc_cv_func_mbstowcs_works = xyes; then
994 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
995 [Define this macro if mbstowcs does not crash when its
996 first argument is NULL.])
1000 AC_CHECK_TYPE(ssize_t, int)
1002 # Try to determine the array type of the second argument of getgroups
1003 # for the target system (int or gid_t).
1005 if test "${target}" = "${build}"; then
1006 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1009 # This condition may need some tweaking. It should include all
1010 # targets where the array type of the second argument of getgroups
1011 # is int and the type of gid_t is not equivalent to int.
1012 *-*-sunos* | *-*-ultrix*)
1013 TARGET_GETGROUPS_T=int
1016 TARGET_GETGROUPS_T=gid_t
1020 AC_SUBST(TARGET_GETGROUPS_T)
1022 gcc_AC_FUNC_MMAP_BLACKLIST
1026 # Under VMS, vfork works very differently than on Unix. The standard test
1027 # won't work, and it isn't easily adaptable. It makes more sense to
1029 ac_cv_func_vfork_works=yes
1035 # Until we have in-tree GNU iconv:
1037 AC_SUBST(LIBICONV_DEP)
1043 # We will need to find libiberty.h and ansidecl.h
1044 saved_CFLAGS="$CFLAGS"
1045 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1046 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1047 strsignal strstr strverscmp \
1048 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1049 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1050 #include "ansidecl.h"
1051 #include "system.h"])
1053 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1054 #include "ansidecl.h"
1056 #ifdef HAVE_SYS_RESOURCE_H
1057 #include <sys/resource.h>
1061 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1062 #include "ansidecl.h"
1064 #ifdef HAVE_SYS_RESOURCE_H
1065 #include <sys/resource.h>
1067 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1068 [Define to \`long' if <sys/resource.h> doesn't define.])])
1070 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1071 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1072 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1073 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1074 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1075 #include "ansidecl.h"
1084 gcc_AC_CHECK_DECLS(times, , ,[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_TIMES_H
1088 #include <sys/times.h>
1092 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1093 #include "ansidecl.h"
1098 # More time-related stuff.
1099 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1100 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1101 #include "ansidecl.h"
1103 #ifdef HAVE_SYS_TIMES_H
1104 #include <sys/times.h>
1106 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1107 if test $ac_cv_struct_tms = yes; then
1108 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1109 [Define if <sys/times.h> defines struct tms.])
1112 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1113 # revisit after autoconf 2.50.
1114 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1115 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1116 #include "ansidecl.h"
1118 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1119 if test $gcc_cv_type_clock_t = yes; then
1120 AC_DEFINE(HAVE_CLOCK_T, 1,
1121 [Define if <time.h> defines clock_t.])
1124 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1125 CFLAGS="$saved_CFLAGS"
1127 gcc_AC_INITFINI_ARRAY
1129 # mkdir takes a single argument on some systems.
1130 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1138 # With Setjmp/Longjmp based exception handling.
1139 AC_ARG_ENABLE(sjlj-exceptions,
1140 [ --enable-sjlj-exceptions
1141 arrange to use setjmp/longjmp exception handling],
1142 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1143 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1144 [Define 0/1 to force the choice for exception handling model.])])
1146 # For platforms with the unwind ABI which includes an unwind library,
1147 # libunwind, we can choose to use the system libunwind.
1148 AC_ARG_WITH(system-libunwind,
1149 [ --with-system-libunwind use installed libunwind])
1151 # config.gcc also contains tests of with_system_libunwind.
1152 if test x$with_system_libunwind = xyes; then
1153 AC_DEFINE(HAVE_GETIPINFO, 1,
1154 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1157 # --------------------------------------------------------
1158 # Build, host, and target specific configuration fragments
1159 # --------------------------------------------------------
1161 # Collect build-machine-specific information.
1162 . ${srcdir}/config.build
1164 # Collect host-machine-specific information.
1165 . ${srcdir}/config.host
1169 # Collect target-machine-specific information.
1170 . ${srcdir}/config.gcc
1172 extra_objs="${host_extra_objs} ${extra_objs}"
1173 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1175 # Default the target-machine variables that were not explicitly set.
1176 if test x"$tm_file" = x
1177 then tm_file=$cpu_type/$cpu_type.h; fi
1179 if test x"$extra_headers" = x
1180 then extra_headers=; fi
1182 if test x$md_file = x
1183 then md_file=$cpu_type/$cpu_type.md; fi
1185 if test x$out_file = x
1186 then out_file=$cpu_type/$cpu_type.c; fi
1188 if test x"$tmake_file" = x
1189 then tmake_file=$cpu_type/t-$cpu_type
1192 if test x"$dwarf2" = xyes
1193 then tm_file="$tm_file tm-dwarf2.h"
1196 # Say what files are being used for the output code and MD file.
1197 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1198 echo "Using \`$srcdir/config/$md_file' as machine description file."
1200 # If any of the xm_file variables contain nonexistent files, warn
1201 # about them and drop them.
1204 for x in $build_xm_file; do
1205 if test -f $srcdir/config/$x
1207 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1213 for x in $host_xm_file; do
1214 if test -f $srcdir/config/$x
1216 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1222 for x in $xm_file; do
1223 if test -f $srcdir/config/$x
1225 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1231 for f in $tm_file; do
1234 if test $count = ax; then
1235 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1237 echo "Using the following target machine macro files:"
1238 for f in $tm_file; do
1239 echo " $srcdir/config/$f"
1243 if test x$need_64bit_hwint = xyes; then
1244 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1245 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1248 if test x$use_long_long_for_widest_fast_int = xyes; then
1249 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1250 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1251 efficiently supported by the host hardware.])
1255 for f in $host_xm_file; do
1258 if test $count = a; then
1260 elif test $count = ax; then
1261 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1263 echo "Using the following host machine macro files:"
1264 for f in $host_xm_file; do
1265 echo " $srcdir/config/$f"
1268 echo "Using ${out_host_hook_obj} for host machine hooks."
1270 if test "$host_xm_file" != "$build_xm_file"; then
1272 for f in $build_xm_file; do
1275 if test $count = a; then
1277 elif test $count = ax; then
1278 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1280 echo "Using the following build machine macro files:"
1281 for f in $build_xm_file; do
1282 echo " $srcdir/config/$f"
1289 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1290 gcc_cv_mcontext_underscores,
1292 #include <sys/cdefs.h>
1293 #include <sys/signal.h>
1294 #include <ucontext.h>
1295 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1297 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1298 if test $gcc_cv_mcontext_underscores = yes; then
1299 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1300 [mcontext_t fields start with __])
1309 # Check if a valid thread package
1310 case ${enable_threads} in
1313 target_thread_file='single'
1317 target_thread_file='single'
1319 aix | dce | gnat | irix | posix | posix95 | rtems | \
1320 single | solaris | vxworks | win32 )
1321 target_thread_file=${enable_threads}
1324 echo "${enable_threads} is an unknown thread package" 1>&2
1329 if test x${thread_file} = x; then
1330 # No thread file set by target-specific clauses in config.gcc,
1331 # so use file chosen by default logic above
1332 thread_file=${target_thread_file}
1335 # Make gthr-default.h if we have a thread file.
1337 if test $thread_file != single; then
1338 rm -f gthr-default.h
1339 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1340 gthread_flags=-DHAVE_GTHR_DEFAULT
1342 AC_SUBST(gthread_flags)
1349 if test x$enable___cxa_atexit = xyes || \
1350 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1351 if test x$host = x$target; then
1353 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1354 # keyed to flag_use_cxa_atexit
1359 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1360 [echo "__cxa_atexit can't be enabled on this target"])
1364 # We can't check for __cxa_atexit when building a cross, so assume
1368 if test x$use_cxa_atexit = xyes; then
1369 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1370 [Define if you want to use __cxa_atexit, rather than atexit, to
1371 register C++ destructors for local statics and global objects.
1372 This is essential for fully standards-compliant handling of
1373 destructors, but requires __cxa_atexit in libc.])
1378 if test x$with_system_libunwind = xyes; then
1379 if test x$host = x$target; then
1380 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1383 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1384 if test x$use_getipinfo = xyes; then
1385 AC_DEFINE(HAVE_GETIPINFO, 1,
1386 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1388 echo "The system unwind library does not support _Unwind_GetIPInfo."
1391 # Look for a file containing extra machine modes.
1392 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1393 extra_modes_file='$(srcdir)'/config/${extra_modes}
1394 AC_SUBST(extra_modes_file)
1395 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1396 [Define to the name of a file containing a list of extra machine modes
1397 for this architecture.])
1400 # Convert extra_options into a form suitable for Makefile use.
1402 for f in $extra_options; do
1403 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1405 AC_SUBST(extra_opt_files)
1407 # auto-host.h is the file containing items generated by autoconf and is
1408 # the first file included by config.h.
1409 # If host=build, it is correct to have bconfig include auto-host.h
1410 # as well. If host!=build, we are in error and need to do more
1411 # work to find out the build config parameters.
1412 if test x$host = x$build
1414 build_auto=auto-host.h
1416 # We create a subdir, then run autoconf in the subdir.
1417 # To prevent recursion we set host and build for the new
1418 # invocation of configure to the build for this invocation
1425 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1426 *) realsrcdir=../${srcdir};;
1428 saved_CFLAGS="${CFLAGS}"
1429 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1430 ${realsrcdir}/configure \
1431 --enable-languages=${enable_languages-all} \
1432 --target=$target_alias --host=$build_alias --build=$build_alias
1433 CFLAGS="${saved_CFLAGS}"
1435 # We just finished tests for the build machine, so rename
1436 # the file auto-build.h in the gcc directory.
1437 mv auto-host.h ../auto-build.h
1440 build_auto=auto-build.h
1442 AC_SUBST(build_subdir)
1444 tm_file="${tm_file} defaults.h"
1445 tm_p_file="${tm_p_file} tm-preds.h"
1446 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1447 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1448 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1449 # put this back in temporarily.
1450 xm_file="auto-host.h ansidecl.h ${xm_file}"
1457 # Compile in configure arguments.
1458 if test -f configargs.h ; then
1459 # Being re-configured.
1460 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1461 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1463 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1466 # Double all backslashes and backslash all quotes to turn
1467 # gcc_config_arguments into a C string.
1468 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1469 $gcc_config_arguments
1471 gcc_config_arguments_str=`cat conftest.out`
1474 cat > configargs.h <<EOF
1475 /* Generated automatically. */
1476 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1477 static const char thread_model[] = "$thread_file";
1479 static const struct {
1480 const char *name, *value;
1481 } configure_default_options[] = $configure_default_options;
1485 # Internationalization
1486 ZW_GNU_GETTEXT_SISTER_DIR
1488 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1489 # -liconv on the link line twice.
1490 case "$LIBINTL" in *$LIBICONV*)
1494 AC_ARG_ENABLE(secureplt,
1495 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1498 # Windows32 Registry support for specifying GCC installation paths.
1499 AC_ARG_ENABLE(win32-registry,
1500 [ --disable-win32-registry
1501 disable lookup of installation paths in the
1502 Registry on Windows hosts
1503 --enable-win32-registry enable registry lookup (default)
1504 --enable-win32-registry=KEY
1505 use KEY instead of GCC version as the last portion
1506 of the registry key],,)
1509 win32 | pe | cygwin* | mingw32* | uwin*)
1510 if test "x$enable_win32_registry" != xno; then
1511 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1514 if test "x$enable_win32_registry" != xno; then
1515 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1516 [Define to 1 if installation paths should be looked up in the Windows
1517 Registry. Ignored on non-Windows hosts.])
1519 if test "x$enable_win32_registry" != xyes \
1520 && test "x$enable_win32_registry" != x; then
1521 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1522 [Define to be the last component of the Windows registry key under which
1523 to look for installation paths. The full key used will be
1524 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1525 The default is the GCC version number.])
1531 # Get an absolute path to the GCC top-level source directory
1532 holddir=`${PWDCMD-pwd}`
1534 topdir=`${PWDCMD-pwd}`
1537 # Conditionalize the makefile for this host machine.
1539 for f in ${host_xmake_file}
1541 if test -f ${srcdir}/config/$f
1543 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1547 # Conditionalize the makefile for this target machine.
1549 for f in ${tmake_file}
1551 if test -f ${srcdir}/config/$f
1553 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1556 tmake_file="${tmake_file_}"
1558 # This is a terrible hack which will go away some day.
1559 host_cc_for_libada=${CC}
1560 AC_SUBST(host_cc_for_libada)
1562 out_object_file=`basename $out_file .c`.o
1564 tm_file_list="options.h"
1565 tm_include_list="options.h"
1566 for f in $tm_file; do
1569 f=`echo $f | sed 's/^..//'`
1570 tm_file_list="${tm_file_list} $f"
1571 tm_include_list="${tm_include_list} $f"
1574 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1575 tm_include_list="${tm_include_list} $f"
1578 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1579 tm_include_list="${tm_include_list} config/$f"
1586 for f in $tm_p_file; do
1589 tm_p_file_list="${tm_p_file_list} $f"
1590 tm_p_include_list="${tm_p_include_list} $f"
1593 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1594 tm_p_include_list="${tm_p_include_list} config/$f"
1600 for f in $xm_file; do
1603 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1604 xm_include_list="${xm_include_list} $f"
1607 xm_file_list="${xm_file_list} $f"
1608 xm_include_list="${xm_include_list} $f"
1611 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1612 xm_include_list="${xm_include_list} config/$f"
1618 host_xm_include_list=
1619 for f in $host_xm_file; do
1622 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1623 host_xm_include_list="${host_xm_include_list} $f"
1626 host_xm_file_list="${host_xm_file_list} $f"
1627 host_xm_include_list="${host_xm_include_list} $f"
1630 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1631 host_xm_include_list="${host_xm_include_list} config/$f"
1637 for f in $build_xm_file; do
1640 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1641 build_xm_include_list="${build_xm_include_list} $f"
1643 auto-build.h | auto-host.h )
1644 build_xm_file_list="${build_xm_file_list} $f"
1645 build_xm_include_list="${build_xm_include_list} $f"
1648 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1649 build_xm_include_list="${build_xm_include_list} config/$f"
1654 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1655 # cross-compiler which does not use the native headers and libraries.
1656 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1657 CROSS= AC_SUBST(CROSS)
1658 ALL=all.internal AC_SUBST(ALL)
1659 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1661 if test "x$with_build_sysroot" != x; then
1662 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1664 # This value is used, even on a native system, because
1665 # CROSS_SYSTEM_HEADER_DIR is just
1666 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1667 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1670 if test x$host != x$target
1672 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1674 SYSTEM_HEADER_DIR=$build_system_header_dir
1675 case "$host","$target" in
1676 # Darwin crosses can use the host system's libraries and headers,
1677 # because of the fat library support. Of course, it must be the
1678 # same version of Darwin on both sides. Allow the user to
1679 # just say --target=foo-darwin without a version number to mean
1680 # "the version on this system".
1681 *-*-darwin*,*-*-darwin*)
1682 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1683 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1684 if test $hostos = $targetos -o $targetos = darwin ; then
1686 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1691 i?86-*-*,x86_64-*-* \
1692 | powerpc*-*-*,powerpc64*-*-*)
1693 CROSS="$CROSS -DNATIVE_CROSS" ;;
1695 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1696 SYSTEM_HEADER_DIR=$build_system_header_dir
1699 # If this is a cross-compiler that does not
1700 # have its own set of headers then define
1703 # If this is using newlib, without having the headers available now,
1704 # then define inhibit_libc in LIBGCC2_CFLAGS.
1705 # This prevents libgcc2 from containing any code which requires libc
1708 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1709 test x$with_newlib = xyes ; } &&
1710 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1713 AC_SUBST(inhibit_libc)
1715 # When building gcc with a cross-compiler, we need to adjust things so
1716 # that the generator programs are still built with the native compiler.
1717 # Also, we cannot run fixincludes or fix-header.
1719 # These are the normal (build=host) settings:
1720 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1721 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1722 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1724 # Possibly disable fixproto, on a per-target basis.
1725 case ${use_fixproto} in
1730 STMP_FIXPROTO=stmp-fixproto
1733 AC_SUBST(STMP_FIXPROTO)
1735 # And these apply if build != host, or we are generating coverage data
1736 if test x$build != x$host || test "x$coverage_flags" != x
1738 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1740 if test "x$TARGET_SYSTEM_ROOT" = x; then
1741 if test "x$STMP_FIXPROTO" != x; then
1742 STMP_FIXPROTO=stmp-install-fixproto
1747 # Expand extra_headers to include complete path.
1748 # This substitutes for lots of t-* files.
1750 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1751 for file in ${extra_headers} ; do
1752 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1755 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1756 if test x"$use_gcc_tgmath" = xyes
1757 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1760 # Define collect2 in Makefile.
1761 case $host_can_use_collect2 in
1763 *) collect2='collect2$(exeext)' ;;
1765 AC_SUBST([collect2])
1767 # Add a definition of USE_COLLECT2 if system wants one.
1768 case $use_collect2 in
1769 no) use_collect2= ;;
1772 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1773 xm_defines="${xm_defines} USE_COLLECT2"
1774 case $host_can_use_collect2 in
1776 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1782 # ---------------------------
1783 # Assembler & linker features
1784 # ---------------------------
1786 # Identify the assembler which will work hand-in-glove with the newly
1787 # built GCC, so that we can examine its features. This is the assembler
1788 # which will be driven by the driver program.
1790 # If build != host, and we aren't building gas in-tree, we identify a
1791 # build->target assembler and hope that it will have the same features
1792 # as the host->target assembler we'll be using.
1793 gcc_cv_gas_major_version=
1794 gcc_cv_gas_minor_version=
1795 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1797 m4_pattern_allow([AS_FOR_TARGET])dnl
1798 AS_VAR_SET_IF(gcc_cv_as,, [
1799 if test -x "$DEFAULT_ASSEMBLER"; then
1800 gcc_cv_as="$DEFAULT_ASSEMBLER"
1801 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1802 && test -f ../gas/Makefile \
1803 && test x$build = x$host; then
1804 gcc_cv_as=../gas/as-new$build_exeext
1805 elif test -x as$build_exeext; then
1806 # Build using assembler in the current directory.
1807 gcc_cv_as=./as$build_exeext
1808 elif test -x $AS_FOR_TARGET; then
1809 gcc_cv_as="$AS_FOR_TARGET"
1811 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1814 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1815 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1816 case "$ORIGINAL_AS_FOR_TARGET" in
1817 ./as | ./as$build_exeext) ;;
1818 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1821 AC_MSG_CHECKING(what assembler to use)
1822 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1823 # Single tree build which includes gas. We want to prefer it
1824 # over whatever linker top-level may have detected, since
1825 # we'll use what we're building after installation anyway.
1826 AC_MSG_RESULT(newly built gas)
1828 _gcc_COMPUTE_GAS_VERSION
1829 in_tree_gas_is_elf=no
1830 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1831 || (grep 'obj_format = multi' ../gas/Makefile \
1832 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1834 in_tree_gas_is_elf=yes
1837 AC_MSG_RESULT($gcc_cv_as)
1841 # Identify the linker which will work hand-in-glove with the newly
1842 # built GCC, so that we can examine its features. This is the linker
1843 # which will be driven by the driver program.
1845 # If build != host, and we aren't building gas in-tree, we identify a
1846 # build->target linker and hope that it will have the same features
1847 # as the host->target linker we'll be using.
1848 gcc_cv_gld_major_version=
1849 gcc_cv_gld_minor_version=
1850 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1851 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1853 AS_VAR_SET_IF(gcc_cv_ld,, [
1854 if test -x "$DEFAULT_LINKER"; then
1855 gcc_cv_ld="$DEFAULT_LINKER"
1856 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1857 && test -f ../ld/Makefile \
1858 && test x$build = x$host; then
1859 gcc_cv_ld=../ld/ld-new$build_exeext
1860 elif test -x collect-ld$build_exeext; then
1861 # Build using linker in the current directory.
1862 gcc_cv_ld=./collect-ld$build_exeext
1863 elif test -x $LD_FOR_TARGET; then
1864 gcc_cv_ld="$LD_FOR_TARGET"
1866 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1869 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1870 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1871 case "$ORIGINAL_LD_FOR_TARGET" in
1872 ./collect-ld | ./collect-ld$build_exeext) ;;
1873 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1876 AC_MSG_CHECKING(what linker to use)
1877 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1878 # Single tree build which includes ld. We want to prefer it
1879 # over whatever linker top-level may have detected, since
1880 # we'll use what we're building after installation anyway.
1881 AC_MSG_RESULT(newly built ld)
1883 in_tree_ld_is_elf=no
1884 if (grep 'EMUL = .*elf' ../ld/Makefile \
1885 || grep 'EMUL = .*linux' ../ld/Makefile \
1886 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1887 in_tree_ld_is_elf=yes
1889 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
1892 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1893 if test x$gcc_cv_gld_version != x; then
1897 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1898 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1901 AC_MSG_RESULT($gcc_cv_ld)
1905 # Figure out what nm we will be using.
1906 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1907 AS_VAR_SET_IF(gcc_cv_nm,, [
1908 if test -f $gcc_cv_binutils_srcdir/configure.in \
1909 && test -f ../binutils/Makefile \
1910 && test x$build = x$host; then
1911 gcc_cv_nm=../binutils/nm-new$build_exeext
1912 elif test -x nm$build_exeext; then
1913 gcc_cv_nm=./nm$build_exeext
1914 elif test -x $NM_FOR_TARGET; then
1915 gcc_cv_nm="$NM_FOR_TARGET"
1917 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1920 AC_MSG_CHECKING(what nm to use)
1921 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1922 # Single tree build which includes binutils.
1923 AC_MSG_RESULT(newly built nm)
1926 AC_MSG_RESULT($gcc_cv_nm)
1930 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1931 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1932 case "$ORIGINAL_NM_FOR_TARGET" in
1933 ./nm | ./nm$build_exeext) ;;
1934 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1938 # Figure out what objdump we will be using.
1939 AS_VAR_SET_IF(gcc_cv_objdump,, [
1940 if test -f $gcc_cv_binutils_srcdir/configure.in \
1941 && test -f ../binutils/Makefile \
1942 && test x$build = x$host; then
1943 # Single tree build which includes binutils.
1944 gcc_cv_objdump=../binutils/objdump$build_exeext
1945 elif test -x objdump$build_exeext; then
1946 gcc_cv_objdump=./objdump$build_exeext
1947 elif test -x $OBJDUMP_FOR_TARGET; then
1948 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1950 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1953 AC_MSG_CHECKING(what objdump to use)
1954 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1955 # Single tree build which includes binutils.
1956 AC_MSG_RESULT(newly built objdump)
1957 elif test x$gcc_cv_objdump = x; then
1958 AC_MSG_RESULT(not found)
1960 AC_MSG_RESULT($gcc_cv_objdump)
1963 # Figure out what assembler alignment features are present.
1964 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1968 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1969 [Define if your assembler supports .balign and .p2align.])])
1971 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1974 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1975 [Define if your assembler supports specifying the maximum number
1976 of bytes to skip when using the GAS .p2align command.])])
1978 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
1981 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
1982 [Define if your assembler supports .literal16.])])
1984 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
1986 [conftest_label1: .word 0
1988 conftest_label2: .word 0
1990 [if test x$gcc_cv_nm != x; then
1991 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1992 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1993 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
1995 else gcc_cv_as_subsection_m1=yes
1997 rm -f conftest.nm1 conftest.nm2
1999 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2000 [Define if your assembler supports .subsection and .subsection -1 starts
2001 emitting at the beginning of your section.])])
2003 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2006 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2008 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2010 [ .weakref foobar, barfnot],,
2011 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2013 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2016 .NSUBSPA $CODE$,COMDAT],,
2017 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2019 # .hidden needs to be supported in both the assembler and the linker,
2020 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2021 # This is irritatingly difficult to feature test for; we have to check the
2022 # date string after the version number. If we've got an in-tree
2023 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2025 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2026 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2031 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2032 [if test $in_tree_ld = yes ; then
2034 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2035 && test $in_tree_ld_is_elf = yes; then
2036 gcc_cv_ld_hidden=yes
2039 gcc_cv_ld_hidden=yes
2040 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2041 if echo "$ld_ver" | grep GNU > /dev/null; then
2043 ld_vers=`echo $ld_ver | sed -n \
2044 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2045 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2046 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2047 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2048 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2049 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2050 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2051 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2052 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2053 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2054 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2055 if test 0"$ld_date" -lt 20020404; then
2056 if test -n "$ld_date"; then
2057 # If there was date string, but was earlier than 2002-04-04, fail
2059 elif test -z "$ld_vers"; then
2060 # If there was no date string nor ld version number, something is wrong
2063 test -z "$ld_vers_patch" && ld_vers_patch=0
2064 if test "$ld_vers_major" -lt 2; then
2066 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2067 gcc_cv_ld_hidden="no"
2068 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2076 hppa64*-*-hpux* | ia64*-*-hpux*)
2077 gcc_cv_ld_hidden=yes
2085 libgcc_visibility=no
2086 AC_SUBST(libgcc_visibility)
2087 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2088 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2089 libgcc_visibility=yes
2090 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2091 [Define if your assembler and linker support .hidden.])
2094 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2095 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2103 [# GAS versions before 2.11 do not support uleb128,
2104 # despite appearing to.
2105 # ??? There exists an elf-specific test that will crash
2106 # the assembler. Perhaps it's better to figure out whether
2107 # arbitrary sections are supported and try the test.
2108 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2109 if echo "$as_ver" | grep GNU > /dev/null; then
2111 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2112 as_major=`echo $as_ver | sed 's/\..*//'`
2113 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2115 if test $as_major -eq 2 && test $as_minor -lt 11
2117 else gcc_cv_as_leb128=yes
2120 [AC_DEFINE(HAVE_AS_LEB128, 1,
2121 [Define if your assembler supports .sleb128 and .uleb128.])])
2123 # GAS versions up to and including 2.11.0 may mis-optimize
2125 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2133 .section .eh_frame,"aw",@progbits
2135 .4byte .LECIE1-.LSCIE1
2149 .4byte .LEFDE1-.LASFDE1
2151 .4byte .LASFDE1-__FRAME_BEGIN__
2159 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2160 cat > conftest.lit <<EOF
2161 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2162 0010 01000000 12000000 18000000 00000000 ................
2163 0020 08000000 04080000 0044 .........D @&t@
2165 cat > conftest.big <<EOF
2166 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2167 0010 00000001 00000012 00000018 00000000 ................
2168 0020 00000008 04000000 0844 .........D @&t@
2170 # If the assembler didn't choke, and we can objdump,
2171 # and we got the correct data, then succeed.
2172 # The text in the here-document typically retains its unix-style line
2173 # endings, while the output of objdump will use host line endings.
2174 # Therefore, use diff -b for the comparisons.
2175 if test x$gcc_cv_objdump != x \
2176 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2177 | tail -3 > conftest.got \
2178 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2179 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2181 gcc_cv_as_eh_frame=yes
2182 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2183 gcc_cv_as_eh_frame=buggy
2185 # Uh oh, what do we do now?
2186 gcc_cv_as_eh_frame=no
2189 if test $gcc_cv_as_eh_frame = buggy; then
2190 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2191 [Define if your assembler mis-optimizes .eh_frame data.])
2194 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2195 [elf,2,12,0], [--fatal-warnings],
2196 [.section .rodata.str, "aMS", @progbits, 1])
2197 if test $gcc_cv_as_shf_merge = no; then
2198 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2199 [elf,2,12,0], [--fatal-warnings],
2200 [.section .rodata.str, "aMS", %progbits, 1])
2202 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2203 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2204 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2206 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2207 [elf,2,16,0], [--fatal-warnings],
2208 [.section .text,"axG",@progbits,.foo,comdat])
2209 if test $gcc_cv_as_comdat_group = yes; then
2210 gcc_cv_as_comdat_group_percent=no
2212 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2213 [elf,2,16,0], [--fatal-warnings],
2214 [.section .text,"axG",%progbits,.foo,comdat])
2216 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2218 if test 0"$ld_date" -lt 20050308; then
2219 if test -n "$ld_date"; then
2220 # If there was date string, but was earlier than 2005-03-08, fail
2222 elif test "$ld_vers_major" -lt 2; then
2224 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2229 # assume linkers other than GNU ld don't support COMDAT group
2232 if test $comdat_group = no; then
2233 gcc_cv_as_comdat_group=no
2234 gcc_cv_as_comdat_group_percent=no
2236 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2237 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2238 [Define 0/1 if your assembler and linker support COMDAT groups.])
2240 # Thread-local storage - the check is heavily parametrized.
2249 .section ".tdata","awT",@progbits
2252 ldq $27,__tls_get_addr($29) !literal!1
2253 lda $16,foo($29) !tlsgd!1
2254 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2255 ldq $27,__tls_get_addr($29) !literal!2
2256 lda $16,foo($29) !tlsldm!2
2257 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2258 ldq $1,foo($29) !gotdtprel
2259 ldah $2,foo($29) !dtprelhi
2260 lda $3,foo($2) !dtprello
2261 lda $4,foo($29) !dtprel
2262 ldq $1,foo($29) !gottprel
2263 ldah $2,foo($29) !tprelhi
2264 lda $3,foo($2) !tprello
2265 lda $4,foo($29) !tprel'
2268 tls_as_opt=--fatal-warnings
2272 .section ".tdata","awT",@progbits
2284 .section ".tdata","awT",@progbits
2288 addil LT%foo-$tls_gdidx$,gp
2289 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2292 addil LT%foo-$tls_ldidx$,gp
2294 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2295 addil LR%foo-$tls_dtpoff$,%ret0
2296 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2298 addil LT%foo-$tls_ieoff$,gp
2299 ldw RT%foo-$tls_ieoff$(%r1),%t2
2302 addil LR%foo-$tls_leoff$,%t1
2303 ldo RR%foo-$tls_leoff$(%r1),%t2'
2306 tls_as_opt=--fatal-warnings
2310 .section ".tdata","awT",%progbits
2323 .section ".tdata","awT",@progbits
2327 leal foo@TLSGD(,%ebx,1), %eax
2328 leal foo@TLSLDM(%ebx), %eax
2329 leal foo@DTPOFF(%eax), %edx
2330 movl foo@GOTTPOFF(%ebx), %eax
2331 subl foo@GOTTPOFF(%ebx), %eax
2332 addl foo@GOTNTPOFF(%ebx), %eax
2333 movl foo@INDNTPOFF, %eax
2334 movl $foo@TPOFF, %eax
2335 subl $foo@TPOFF, %eax
2336 leal foo@NTPOFF(%ecx), %eax'
2339 tls_as_opt=--fatal-warnings
2343 .section ".tdata","awT",@progbits
2347 leaq foo@TLSGD(%rip), %rdi
2348 leaq foo@TLSLD(%rip), %rdi
2349 leaq foo@DTPOFF(%rax), %rdx
2350 movq foo@GOTTPOFF(%rip), %rax
2351 movq $foo@TPOFF, %rax'
2354 tls_as_opt=--fatal-warnings
2358 .section ".tdata","awT",@progbits
2361 addl r16 = @ltoff(@dtpmod(foo#)), gp
2362 addl r17 = @ltoff(@dtprel(foo#)), gp
2363 addl r18 = @ltoff(@tprel(foo#)), gp
2364 addl r19 = @dtprel(foo#), gp
2365 adds r21 = @dtprel(foo#), r13
2366 movl r23 = @dtprel(foo#)
2367 addl r20 = @tprel(foo#), gp
2368 adds r22 = @tprel(foo#), r13
2369 movl r24 = @tprel(foo#)'
2372 tls_as_opt=--fatal-warnings
2376 .section .tdata,"awT",@progbits
2380 addiu $4, $28, %tlsgd(x)
2381 addiu $4, $28, %tlsldm(x)
2382 lui $4, %dtprel_hi(x)
2383 addiu $4, $4, %dtprel_lo(x)
2384 lw $4, %gottprel(x)($28)
2385 lui $4, %tprel_hi(x)
2386 addiu $4, $4, %tprel_lo(x)'
2389 tls_as_opt='-32 --fatal-warnings'
2393 .section ".tdata","awT",@progbits
2401 addi 3,31,ld0@got@tlsgd
2403 addi 3,31,x1@got@tlsld
2406 addis 9,3,x2@dtprel@ha
2407 addi 9,9,x2@dtprel@l
2408 lwz 9,x3@got@tprel(31)
2411 addis 9,2,x2@tprel@ha
2412 addi 9,9,x2@tprel@l'
2415 tls_as_opt="-a32 --fatal-warnings"
2419 .section ".tdata","awT",@progbits
2427 addi 3,2,ld0@got@tlsgd
2433 addi 3,2,x1@got@tlsld
2439 addis 9,3,x2@dtprel@ha
2440 addi 9,9,x2@dtprel@l
2443 ld 9,x3@got@dtprel(2)
2449 tls_as_opt="-a64 --fatal-warnings"
2453 .section ".tdata","awT",@progbits
2462 l %r1,foo@GOTNTPOFF(%r12)
2463 l %r1,0(%r1):tls_load:foo
2464 bas %r14,0(%r1,%r13):tls_gdcall:foo
2465 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2468 tls_as_opt="-m31 --fatal-warnings"
2472 .section ".tdata","awT",@progbits
2480 lg %r1,foo@GOTNTPOFF(%r12)
2481 larl %r1,foo@INDNTPOFF
2482 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2483 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2486 tls_as_opt="-m64 -Aesame --fatal-warnings"
2488 sh-*-* | sh[34]-*-*)
2490 .section ".tdata","awT",@progbits
2500 tls_as_opt=--fatal-warnings
2504 sparc*-sun-solaris2.[56789]*)
2505 # TLS was introduced in the Solaris 9 4/04 release but
2506 # we do not enable it by default on Solaris 9 either.
2507 if test "x$enable_tls" = xyes ; then
2513 sparc*-sun-solaris2.*)
2520 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2522 .section ".tdata",#alloc,#write,#tls
2525 sethi %tgd_hi22(foo), %o0
2526 add %o0, %tgd_lo10(foo), %o1
2527 add %l7, %o1, %o0, %tgd_add(foo)
2528 call __tls_get_addr, %tgd_call(foo)
2529 sethi %tldm_hi22(foo), %l1
2530 add %l1, %tldm_lo10(foo), %l2
2531 add %l7, %l2, %o0, %tldm_add(foo)
2532 call __tls_get_addr, %tldm_call(foo)
2533 sethi %tldo_hix22(foo), %l3
2534 xor %l3, %tldo_lox10(foo), %l4
2535 add %o0, %l4, %l5, %tldo_add(foo)
2536 sethi %tie_hi22(foo), %o3
2537 add %o3, %tie_lo10(foo), %o3
2538 ld [%l7 + %o3], %o2, %tie_ld(foo)
2539 add %g7, %o2, %o4, %tie_add(foo)
2540 sethi %tle_hix22(foo), %l1
2541 xor %l1, %tle_lox10(foo), %o5
2542 ld [%g7 + %o5], %o1'
2547 .section ".tdata","awT",@progbits
2550 sethi %tgd_hi22(foo), %o0
2551 add %o0, %tgd_lo10(foo), %o1
2552 add %l7, %o1, %o0, %tgd_add(foo)
2553 call __tls_get_addr, %tgd_call(foo)
2554 sethi %tldm_hi22(foo), %l1
2555 add %l1, %tldm_lo10(foo), %l2
2556 add %l7, %l2, %o0, %tldm_add(foo)
2557 call __tls_get_addr, %tldm_call(foo)
2558 sethi %tldo_hix22(foo), %l3
2559 xor %l3, %tldo_lox10(foo), %l4
2560 add %o0, %l4, %l5, %tldo_add(foo)
2561 sethi %tie_hi22(foo), %o3
2562 add %o3, %tie_lo10(foo), %o3
2563 ld [%l7 + %o3], %o2, %tie_ld(foo)
2564 add %g7, %o2, %o4, %tie_add(foo)
2565 sethi %tle_hix22(foo), %l1
2566 xor %l1, %tle_lox10(foo), %o5
2567 ld [%g7 + %o5], %o1'
2570 tls_as_opt="-32 --fatal-warnings"
2576 if test "x$enable_tls" = xno ; then
2577 : # TLS explicitly disabled.
2578 elif test "x$enable_tls" = xyes ; then
2579 set_have_as_tls=yes # TLS explicitly enabled.
2580 elif test -z "$tls_first_major"; then
2581 : # If we don't have a check, assume no support.
2583 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2584 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2585 [set_have_as_tls=yes])
2587 if test $set_have_as_tls = yes ; then
2588 AC_DEFINE(HAVE_AS_TLS, 1,
2589 [Define if your assembler supports thread-local storage.])
2592 # Target-specific assembler checks.
2594 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2595 gcc_cv_ld_static_dynamic=no
2596 if test $in_tree_ld = yes ; then
2597 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2598 gcc_cv_ld_static_dynamic=yes
2600 elif test x$gcc_cv_ld != x; then
2601 # Check if linker supports -Bstatic/-Bdynamic option
2602 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2603 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2604 gcc_cv_ld_static_dynamic=yes
2607 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2608 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2609 [Define if your linker supports -Bstatic/-Bdynamic option.])
2611 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2613 if test x"$demangler_in_ld" = xyes; then
2614 AC_MSG_CHECKING(linker --demangle support)
2615 gcc_cv_ld_demangle=no
2616 if test $in_tree_ld = yes; then
2617 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2618 gcc_cv_ld_demangle=yes
2620 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2621 # Check if the GNU linker supports --demangle option
2622 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2623 gcc_cv_ld_demangle=yes
2626 if test x"$gcc_cv_ld_demangle" = xyes; then
2627 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2628 [Define if your linker supports --demangle option.])
2630 AC_MSG_RESULT($gcc_cv_ld_demangle)
2634 # All TARGET_ABI_OSF targets.
2635 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2636 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2637 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2640 extbl $3, $2, $3 !lituse_bytoff!1
2641 ldq $2, a($29) !literal!1
2642 ldq $4, b($29) !literal!2
2643 ldq_u $3, 0($2) !lituse_base!1
2644 ldq $27, f($29) !literal!5
2645 jsr $26, ($27), f !lituse_jsr!5
2646 ldah $29, 0($26) !gpdisp!3
2647 lda $0, c($29) !gprel
2648 ldah $1, d($29) !gprelhigh
2649 lda $1, d($1) !gprellow
2650 lda $29, 0($29) !gpdisp!3],,
2651 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2652 [Define if your assembler supports explicit relocations.])])
2653 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2654 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2657 ldq $27, a($29) !literal!1
2658 jsr $26, ($27), a !lituse_jsrdirect!1],,
2659 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2660 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2664 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2665 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2666 [-no-mul-bug-abort], [.text],,
2667 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2668 [Define if your assembler supports the -no-mul-bug-abort option.])])
2672 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2673 [.register %g2, #scratch],,
2674 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2675 [Define if your assembler supports .register.])])
2677 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2679 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2680 [Define if your assembler supports -relax option.])])
2682 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2683 gcc_cv_as_sparc_ua_pcrel,,
2691 .uaword %r_disp32(foo)],
2692 [if test x$gcc_cv_ld != x \
2693 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2694 gcc_cv_as_sparc_ua_pcrel=yes
2697 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2698 [Define if your assembler and linker support unaligned PC relative relocs.])
2700 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2701 gcc_cv_as_sparc_ua_pcrel_hidden,,
2706 .uaword %r_disp32(foo)
2707 .byte 0x32, 0x33, 0x34
2712 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2713 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2714 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2715 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2716 if $gcc_cv_objdump -R conftest 2> /dev/null \
2717 | grep 'DISP32' > /dev/null 2>&1; then
2720 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2724 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2725 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2726 ]) # unaligned pcrel relocs
2728 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2729 gcc_cv_as_sparc_offsetable_lo10,,
2732 or %g1, %lo(ab) + 12, %g1
2733 or %g1, %lo(ab + 12), %g1],
2734 [if test x$gcc_cv_objdump != x \
2735 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2736 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2737 gcc_cv_as_sparc_offsetable_lo10=yes
2739 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2740 [Define if your assembler supports offsetable %lo().])])
2744 i[34567]86-*-* | x86_64-*-*)
2747 cygwin* | pe | mingw32*)
2748 # Used for DWARF 2 in PE
2749 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2750 gcc_cv_as_ix86_pe_secrel32,
2756 [if test x$gcc_cv_ld != x \
2757 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2758 gcc_cv_as_ix86_pe_secrel32=yes
2761 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2762 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2766 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2767 gcc_cv_as_ix86_filds_fists,
2768 [2,9,0],, [filds mem; fists mem],,
2769 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2770 [Define if your assembler uses the new HImode fild and fist notation.])])
2772 gcc_GAS_CHECK_FEATURE([cmov syntax],
2773 gcc_cv_as_ix86_cmov_sun_syntax,,,
2774 [cmovl.l %edx, %eax],,
2775 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2776 [Define if your assembler supports the Sun syntax for cmov.])])
2778 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2779 gcc_cv_as_ix86_ffreep,,,
2781 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2782 [Define if your assembler supports the ffreep mnemonic.])])
2784 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2785 gcc_cv_as_ix86_sahf,,,
2787 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2788 [Define if your assembler supports the sahf mnemonic.])])
2790 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2791 gcc_cv_as_ix86_diff_sect_delta,,,
2799 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2800 [Define if your assembler supports the subtraction of symbols in different sections.])])
2802 # This one is used unconditionally by i386.[ch]; it is to be defined
2803 # to 1 if the feature is present, 0 otherwise.
2804 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2805 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2811 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2812 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2813 [Define true if the assembler supports '.long foo@GOTOFF'.])
2817 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2818 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2820 addl r15 = @ltoffx(x#), gp
2822 ld8.mov r16 = [[r15]], x#],,
2823 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2824 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2830 *-*-aix*) conftest_s=' .machine "pwr5"
2834 gcc_GAS_CHECK_FEATURE([.machine directive support],
2835 gcc_cv_as_machine_directive,,,
2836 [ .machine ppc7400])
2837 if test x$gcc_cv_as_machine_directive != xyes; then
2838 echo "*** This target requires an assembler supporting \".machine\"" >&2
2839 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2840 test x$build = x$target && exit 1
2844 *) conftest_s=' .machine power4
2849 gcc_GAS_CHECK_FEATURE([mfcr field support],
2850 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2852 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2853 [Define if your assembler supports mfcr field.])])
2856 *-*-aix*) conftest_s=' .machine "pwr5"
2859 *) conftest_s=' .machine power5
2864 gcc_GAS_CHECK_FEATURE([popcntb support],
2865 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2867 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2868 [Define if your assembler supports popcntb field.])])
2871 *-*-aix*) conftest_s=' .machine "pwr5x"
2874 *) conftest_s=' .machine power5
2879 gcc_GAS_CHECK_FEATURE([fp round support],
2880 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2882 [AC_DEFINE(HAVE_AS_FPRND, 1,
2883 [Define if your assembler supports fprnd.])])
2886 *-*-aix*) conftest_s=' .machine "pwr6"
2889 *) conftest_s=' .machine power6
2894 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2895 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2897 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2898 [Define if your assembler supports mffgpr and mftgpr.])])
2901 *-*-aix*) conftest_s=' .csect .text[[PR]]
2903 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2907 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2908 *) conftest_s=' .text
2910 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2913 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2914 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2916 [AC_DEFINE(HAVE_AS_REL16, 1,
2917 [Define if your assembler supports R_PPC_REL16 relocs.])])
2920 *-*-aix*) conftest_s=' .machine "pwr6"
2923 *) conftest_s=' .machine power6
2928 gcc_GAS_CHECK_FEATURE([compare bytes support],
2929 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2931 [AC_DEFINE(HAVE_AS_CMPB, 1,
2932 [Define if your assembler supports cmpb.])])
2935 *-*-aix*) conftest_s=' .machine "pwr6"
2938 *) conftest_s=' .machine power6
2943 gcc_GAS_CHECK_FEATURE([decimal float support],
2944 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2946 [AC_DEFINE(HAVE_AS_DFP, 1,
2947 [Define if your assembler supports DFP instructions.])])
2949 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2950 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2951 [.gnu_attribute 4,1],,
2952 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2953 [Define if your assembler supports .gnu_attribute.])])
2957 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2958 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2959 [ lw $4,%gp_rel(foo)($4)],,
2960 [if test x$target_cpu_default = x
2961 then target_cpu_default=MASK_EXPLICIT_RELOCS
2962 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2964 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2965 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2966 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2967 [Define if the assembler understands -mno-shared.])])
2969 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2970 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
2971 [.gnu_attribute 4,1],,
2972 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2973 [Define if your assembler supports .gnu_attribute.])])
2975 gcc_GAS_CHECK_FEATURE([.dtprelword support],
2976 gcc_cv_as_mips_dtprelword, [2,18,0],,
2977 [.section .tdata,"awT",@progbits
2981 .dtprelword x+0x8000],,
2982 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
2983 [Define if your assembler supports .dtprelword.])])
2987 # Mips and HP-UX need the GNU assembler.
2988 # Linux on IA64 might be able to use the Intel assembler.
2991 mips*-*-* | *-*-hpux* )
2992 if test x$gas_flag = xyes \
2993 || test x"$host" != x"$build" \
2994 || test ! -x "$gcc_cv_as" \
2995 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2998 echo "*** This configuration requires the GNU assembler" >&2
3004 # ??? Not all targets support dwarf2 debug_line, even within a version
3005 # of gas. Moreover, we need to emit a valid instruction to trigger any
3006 # info to the output file. So, as supported targets are added to gas 2.11,
3007 # add some instruction here to (also) show we expect this might work.
3008 # ??? Once 2.11 is released, probably need to add first known working
3009 # version to the per-target configury.
3011 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3012 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3013 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3016 ia64*-*-* | s390*-*-*)
3023 if test x"$insn" != x; then
3025 .file 1 \"conftest.s\"
3028 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3029 gcc_cv_as_dwarf2_debug_line,
3030 [elf,2,11,0],, [$conftest_s],
3031 [if test x$gcc_cv_objdump != x \
3032 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3033 | grep debug_line > /dev/null 2>&1; then
3034 gcc_cv_as_dwarf2_debug_line=yes
3037 # The .debug_line file table must be in the exact order that
3038 # we specified the files, since these indices are also used
3039 # by DW_AT_decl_file. Approximate this test by testing if
3040 # the assembler bitches if the same index is assigned twice.
3041 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3042 gcc_cv_as_dwarf2_file_buggy,,,
3046 if test $gcc_cv_as_dwarf2_debug_line = yes \
3047 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3048 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3049 [Define if your assembler supports dwarf2 .file/.loc directives,
3050 and preserves file table indices exactly as given.])
3053 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3054 gcc_cv_as_gdwarf2_flag,
3055 [elf,2,11,0], [--gdwarf2], [$insn],,
3056 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3057 [Define if your assembler supports the --gdwarf2 option.])])
3059 gcc_GAS_CHECK_FEATURE([--gstabs option],
3060 gcc_cv_as_gstabs_flag,
3061 [elf,2,11,0], [--gstabs], [$insn],
3062 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3063 # and warns about it, but still exits successfully. So check for
3065 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3067 else gcc_cv_as_gstabs_flag=yes
3069 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3070 [Define if your assembler supports the --gstabs option.])])
3073 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3074 [gcc_cv_as_line_zero],
3075 [gcc_cv_as_line_zero=no
3076 if test $in_tree_gas = yes; then
3077 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3078 elif test "x$gcc_cv_as" != x; then
3079 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3080 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3081 test "x`cat conftest.out`" = x
3083 gcc_cv_as_line_zero=yes
3085 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3086 cat conftest.s >&AS_MESSAGE_LOG_FD
3087 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3088 cat conftest.out >&AS_MESSAGE_LOG_FD
3090 rm -f conftest.o conftest.s conftest.out
3092 if test "x$gcc_cv_as_line_zero" = xyes; then
3093 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3094 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3097 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3098 gcc_cv_ld_ro_rw_mix=unknown
3099 if test $in_tree_ld = yes ; then
3100 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3101 && test $in_tree_ld_is_elf = yes; then
3102 gcc_cv_ld_ro_rw_mix=read-write
3104 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3105 echo '.section myfoosect, "a"' > conftest1.s
3106 echo '.section myfoosect, "aw"' > conftest2.s
3107 echo '.byte 1' >> conftest2.s
3108 echo '.section myfoosect, "a"' > conftest3.s
3109 echo '.byte 0' >> conftest3.s
3110 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3111 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3112 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3113 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3114 conftest2.o conftest3.o > /dev/null 2>&1; then
3115 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3116 | sed -e '/myfoosect/!d' -e N`
3117 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3118 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3119 gcc_cv_ld_ro_rw_mix=read-only
3121 gcc_cv_ld_ro_rw_mix=read-write
3126 rm -f conftest.* conftest[123].*
3129 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3130 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3131 [Define if your linker links a mix of read-only
3132 and read-write sections into a read-write section.])
3134 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3136 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3137 gcc_cv_ld_eh_frame_hdr=no
3138 if test $in_tree_ld = yes ; then
3139 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3140 && test $in_tree_ld_is_elf = yes; then
3141 gcc_cv_ld_eh_frame_hdr=yes
3143 elif test x$gcc_cv_ld != x; then
3144 # Check if linker supports --eh-frame-hdr option
3145 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3146 gcc_cv_ld_eh_frame_hdr=yes
3149 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3150 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3151 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3152 [Define if your linker supports --eh-frame-hdr option.])
3154 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3156 AC_MSG_CHECKING(linker position independent executable support)
3158 if test $in_tree_ld = yes ; then
3159 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3160 && test $in_tree_ld_is_elf = yes; then
3163 elif test x$gcc_cv_ld != x; then
3164 # Check if linker supports -pie option
3165 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3169 if test x"$gcc_cv_ld_pie" = xyes; then
3170 AC_DEFINE(HAVE_LD_PIE, 1,
3171 [Define if your linker supports -pie option.])
3173 AC_MSG_RESULT($gcc_cv_ld_pie)
3175 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3176 gcc_cv_ld_eh_gc_sections=no
3177 if test $in_tree_ld = yes ; then
3178 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3179 && test $in_tree_ld_is_elf = yes; then
3180 gcc_cv_ld_eh_gc_sections=yes
3182 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3183 cat > conftest.s <<EOF
3186 .type _start, @function
3189 .size _start, .-_start
3190 .section .text.foo,"ax",@progbits
3191 .type foo, @function
3195 .section .gcc_except_table.foo,"a",@progbits
3198 .section .eh_frame,"a",@progbits
3201 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3202 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3203 | grep "gc-sections option ignored" > /dev/null; then
3204 gcc_cv_ld_eh_gc_sections=no
3205 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3206 gcc_cv_ld_eh_gc_sections=yes
3207 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3208 if test x$gcc_cv_as_comdat_group != xyes; then
3209 gcc_cv_ld_eh_gc_sections=no
3210 cat > conftest.s <<EOF
3213 .type _start, @function
3216 .size _start, .-_start
3217 .section .gnu.linkonce.t.foo,"ax",@progbits
3218 .type foo, @function
3222 .section .gcc_except_table.foo,"a",@progbits
3225 .section .eh_frame,"a",@progbits
3228 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3229 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3230 | grep "gc-sections option ignored" > /dev/null; then
3231 gcc_cv_ld_eh_gc_sections=no
3232 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3233 gcc_cv_ld_eh_gc_sections=yes
3239 rm -f conftest.s conftest.o conftest
3243 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3244 gcc_cv_ld_eh_gc_sections=no
3247 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3248 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3249 [Define if your linker supports garbage collection of
3250 sections in presence of EH frames.])
3252 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3258 AC_CACHE_CHECK(linker --as-needed support,
3259 gcc_cv_ld_as_needed,
3260 [gcc_cv_ld_as_needed=no
3261 if test $in_tree_ld = yes ; then
3262 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3263 && test $in_tree_ld_is_elf = yes; then
3264 gcc_cv_ld_as_needed=yes
3266 elif test x$gcc_cv_ld != x; then
3267 # Check if linker supports --as-needed and --no-as-needed options
3268 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3269 gcc_cv_ld_as_needed=yes
3273 if test x"$gcc_cv_ld_as_needed" = xyes; then
3274 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3275 [Define if your linker supports --as-needed and --no-as-needed options.])
3278 case "$target:$tm_file" in
3279 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3280 AC_CACHE_CHECK(linker support for omitting dot symbols,
3281 gcc_cv_ld_no_dot_syms,
3282 [gcc_cv_ld_no_dot_syms=no
3283 if test $in_tree_ld = yes ; then
3284 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3285 gcc_cv_ld_no_dot_syms=yes
3287 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3288 cat > conftest1.s <<EOF
3292 cat > conftest2.s <<EOF
3293 .section ".opd","aw"
3298 .quad .LEfoo,.TOC.@tocbase,0
3304 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3305 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3306 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3307 gcc_cv_ld_no_dot_syms=yes
3309 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3312 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3313 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3314 [Define if your PowerPC64 linker only needs function descriptor syms.])
3319 AC_CACHE_CHECK(linker --sysroot support,
3321 [gcc_cv_ld_sysroot=no
3322 if test $in_tree_ld = yes ; then
3323 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3324 gcc_cv_ld_sysroot=yes
3326 elif test x$gcc_cv_ld != x; then
3327 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3328 gcc_cv_ld_sysroot=yes
3331 if test x"$gcc_cv_ld_sysroot" = xyes; then
3332 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3333 [Define if your linker supports --sysroot.])
3336 if test x$with_sysroot = x && test x$host = x$target \
3337 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3338 && test "$prefix" != "NONE"; then
3339 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3340 [Define to PREFIX/include if cpp should also search that directory.])
3343 # Test for stack protector support in target C library.
3344 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3345 gcc_cv_libc_provides_ssp,
3346 [gcc_cv_libc_provides_ssp=no
3349 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3350 if test "x$with_sysroot" = x; then
3351 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3352 elif test "x$with_build_sysroot" != "x"; then
3353 glibc_header_dir="${with_build_sysroot}/usr/include"
3354 elif test "x$with_sysroot" = xyes; then
3355 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3357 glibc_header_dir="${with_sysroot}/usr/include"
3360 glibc_header_dir=/usr/include
3362 # glibc 2.4 and later provides __stack_chk_fail and
3363 # either __stack_chk_guard, or TLS access to stack guard canary.
3364 if test -f $glibc_header_dir/features.h \
3365 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3366 $glibc_header_dir/features.h > /dev/null; then
3367 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3368 $glibc_header_dir/features.h > /dev/null; then
3369 gcc_cv_libc_provides_ssp=yes
3370 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3371 $glibc_header_dir/features.h > /dev/null \
3372 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3373 $glibc_header_dir/features.h > /dev/null; then
3374 gcc_cv_libc_provides_ssp=yes
3379 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3380 [echo "no __stack_chk_fail on this target"])
3382 *) gcc_cv_libc_provides_ssp=no ;;
3385 if test x$gcc_cv_libc_provides_ssp = xyes; then
3386 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3387 [Define if your target C library provides stack protector support])
3390 # Check if TFmode long double should be used by default or not.
3391 # Some glibc targets used DFmode long double, but with glibc 2.4
3392 # and later they can use TFmode.
3394 powerpc*-*-linux* | \
3399 AC_ARG_WITH(long-double-128,
3400 [ --with-long-double-128 Use 128-bit long double by default.],
3401 gcc_cv_target_ldbl128="$with_long_double_128",
3402 [gcc_cv_target_ldbl128=no
3403 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3404 if test "x$with_sysroot" = x; then
3405 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3406 elif test "x$with_build_sysroot" != "x"; then
3407 glibc_header_dir="${with_build_sysroot}/usr/include"
3408 elif test "x$with_sysroot" = xyes; then
3409 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3411 glibc_header_dir="${with_sysroot}/usr/include"
3414 glibc_header_dir=/usr/include
3417 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3418 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3419 && gcc_cv_target_ldbl128=yes
3424 if test x$gcc_cv_target_ldbl128 = xyes; then
3425 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3426 [Define if TFmode long double should be the default])
3429 # Find out what GC implementation we want, or may, use.
3431 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3439 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3442 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3447 echo "Using $GGC for garbage collection."
3449 # Use the system's zlib library.
3451 zlibinc="-I\$(srcdir)/../zlib"
3452 AC_ARG_WITH(system-zlib,
3453 [ --with-system-zlib use installed libz],
3460 dnl Very limited version of automake's enable-maintainer-mode
3462 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3463 dnl maintainer-mode is disabled by default
3464 AC_ARG_ENABLE(maintainer-mode,
3465 [ --enable-maintainer-mode
3466 enable make rules and dependencies not useful
3467 (and sometimes confusing) to the casual installer],
3468 maintainer_mode=$enableval,
3471 AC_MSG_RESULT($maintainer_mode)
3473 if test "$maintainer_mode" = "yes"; then
3484 # Make empty files to contain the specs and options for each language.
3485 # Then add #include lines to for a compiler that has specs and/or options.
3491 # These (without "all_") are set in each config-lang.in.
3492 # `language' must be a single word so is spelled singularly.
3495 all_outputs='Makefile gccbug libada-mk'
3496 # List of language makefile fragments.
3498 # List of language subdirectory makefiles. Deprecated.
3500 # Additional files for gengtype
3501 all_gtfiles="$target_gtfiles"
3503 # These are the languages that are set in --enable-languages,
3504 # and are available in the GCC tree.
3505 all_selected_languages=
3507 # Add the language fragments.
3508 # Languages are added via two mechanisms. Some information must be
3509 # recorded in makefile variables, these are defined in config-lang.in.
3510 # We accumulate them and plug them into the main Makefile.
3511 # The other mechanism is a set of hooks for each of the main targets
3512 # like `clean', `install', etc.
3514 language_hooks="Make-hooks"
3516 for lang in ${srcdir}/*/config-lang.in
3519 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3521 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3522 if test "x$lang_alias" = x
3524 echo "$lang doesn't set \$language." 1>&2
3527 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3528 subdirs="$subdirs $subdir"
3529 case ",$enable_languages," in
3531 all_selected_languages="$all_selected_languages $lang_alias"
3532 if test -f $srcdir/$subdir/lang-specs.h; then
3533 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3545 . ${srcdir}/$subdir/config-lang.in
3546 if test "x$language" = x
3548 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3553 case ",$enable_languages," in
3556 for i in $subdir_requires; do
3557 test -f "${srcdir}/$i/config-lang.in" && continue
3565 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3566 if test -f $srcdir/$subdir/lang.opt; then
3567 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3569 if test -f $srcdir/$subdir/$subdir-tree.def; then
3570 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3572 if test -f ${srcdir}/$subdir/Makefile.in
3573 then all_lang_makefiles="$subdir/Makefile"
3575 all_languages="$all_languages $language"
3576 all_compilers="$all_compilers $compilers"
3577 all_outputs="$all_outputs $outputs"
3578 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3581 # Pick up gtfiles for c
3583 . ${srcdir}/c-config-lang.in
3584 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3587 for language in $all_selected_languages
3589 check_languages="$check_languages check-$language"
3592 # We link each language in with a set of hooks, reached indirectly via
3593 # lang.${target}. Only do so for selected languages.
3597 target_list="all.cross start.encap rest.encap tags \
3598 install-common install-man install-info install-pdf dvi pdf \
3599 html uninstall info man srcextra srcman srcinfo \
3600 mostlyclean clean distclean maintainer-clean"
3602 for t in $target_list
3605 for lang in $all_selected_languages
3609 echo "lang.$t: $x" >> Make-hooks
3618 echo "dir ." > .gdbinit
3619 echo "dir ${srcdir}" >> .gdbinit
3620 if test x$gdb_needs_out_file_path = xyes
3622 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3624 if test "x$subdirs" != x; then
3627 echo "dir ${srcdir}/$s" >> .gdbinit
3630 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3632 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3633 AC_SUBST(gcc_tooldir)
3636 # Find a directory in which to install a shared libgcc.
3638 AC_ARG_ENABLE(version-specific-runtime-libs,
3639 [ --enable-version-specific-runtime-libs
3640 specify that runtime libraries should be
3641 installed in a compiler-specific directory])
3643 AC_ARG_WITH(slibdir,
3644 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3645 slibdir="$with_slibdir",
3646 if test "${enable_version_specific_runtime_libs+set}" = set; then
3647 slibdir='$(libsubdir)'
3648 elif test "$host" != "$target"; then
3649 slibdir='$(build_tooldir)/lib'
3655 objdir=`${PWDCMD-pwd}`
3658 AC_ARG_WITH(datarootdir,
3659 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3660 datarootdir="\${prefix}/$with_datarootdir",
3661 datarootdir='$(prefix)/share')
3662 AC_SUBST(datarootdir)
3665 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3666 docdir="\${prefix}/$with_docdir",
3667 docdir='$(datarootdir)')
3670 AC_ARG_WITH(htmldir,
3671 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3672 htmldir="\${prefix}/$with_htmldir",
3673 htmldir='$(docdir)')
3676 # Substitute configuration variables
3679 AC_SUBST(all_compilers)
3680 AC_SUBST(all_gtfiles)
3681 AC_SUBST(all_lang_makefrags)
3682 AC_SUBST(all_lang_makefiles)
3683 AC_SUBST(all_languages)
3684 AC_SUBST(all_selected_languages)
3685 AC_SUBST(build_exeext)
3686 AC_SUBST(build_install_headers_dir)
3687 AC_SUBST(build_xm_file_list)
3688 AC_SUBST(build_xm_include_list)
3689 AC_SUBST(build_xm_defines)
3690 AC_SUBST(check_languages)
3691 AC_SUBST(cpp_install_dir)
3692 AC_SUBST(xmake_file)
3693 AC_SUBST(tmake_file)
3694 AC_SUBST(extra_gcc_objs)
3695 AC_SUBST(extra_headers_list)
3696 AC_SUBST(extra_objs)
3697 AC_SUBST(extra_parts)
3698 AC_SUBST(extra_passes)
3699 AC_SUBST(extra_programs)
3700 AC_SUBST(float_h_file)
3701 AC_SUBST(gcc_config_arguments)
3702 AC_SUBST(gcc_gxx_include_dir)
3703 AC_SUBST(host_exeext)
3704 AC_SUBST(host_xm_file_list)
3705 AC_SUBST(host_xm_include_list)
3706 AC_SUBST(host_xm_defines)
3707 AC_SUBST(out_host_hook_obj)
3709 AC_SUBST(lang_opt_files)
3710 AC_SUBST(lang_specs_files)
3711 AC_SUBST(lang_tree_files)
3712 AC_SUBST(local_prefix)
3714 AC_SUBST(objc_boehm_gc)
3716 AC_SUBST(out_object_file)
3717 AC_SUBST(thread_file)
3718 AC_SUBST(tm_file_list)
3719 AC_SUBST(tm_include_list)
3720 AC_SUBST(tm_defines)
3721 AC_SUBST(tm_p_file_list)
3722 AC_SUBST(tm_p_include_list)
3723 AC_SUBST(xm_file_list)
3724 AC_SUBST(xm_include_list)
3725 AC_SUBST(xm_defines)
3726 AC_SUBST(c_target_objs)
3727 AC_SUBST(cxx_target_objs)
3728 AC_SUBST(target_cpu_default)
3730 AC_SUBST_FILE(language_hooks)
3733 if test x${build} = x${host} ; then
3734 if test x${host} = x${target} ; then
3735 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3737 echo "Links are now set up to build a cross-compiler" 1>&2
3738 echo " from ${host} to ${target}." 1>&2
3741 if test x${host} = x${target} ; then
3742 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3743 echo " for ${target}." 1>&2
3745 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3746 echo " from ${host} to ${target}." 1>&2
3750 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3751 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3753 # Configure the subdirectories
3754 # AC_CONFIG_SUBDIRS($subdirs)
3756 # Create the Makefile
3757 # and configure language subdirectories
3758 AC_CONFIG_FILES($all_outputs)
3760 AC_CONFIG_COMMANDS([default],
3762 case ${CONFIG_HEADERS} in
3763 *auto-host.h:config.in*)
3766 # Make sure all the subdirs exist.
3767 for d in $subdirs doc build
3769 test -d $d || mkdir $d
3772 [subdirs='$subdirs'])