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 2, 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 COPYING. If not, write to the Free
21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 changequote(<<, >>)dnl
145 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
150 AC_ARG_WITH(cpp_install_dir,
151 [ --with-cpp-install-dir=DIR
152 install the user visible C preprocessor in DIR
153 (relative to PREFIX) as well as PREFIX/bin],
154 [if test x$withval = xyes; then
155 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
156 elif test x$withval != xno; then
157 cpp_install_dir=$withval
160 # We would like to our source tree to be readonly. However when releases or
161 # pre-releases are generated, the flex/bison generated files as well as the
162 # various formats of manuals need to be included along with the rest of the
163 # sources. Therefore we have --enable-generated-files-in-srcdir to do
166 AC_MSG_CHECKING([whether to place generated files in the source directory])
167 dnl generated-files-in-srcdir is disabled by default
168 AC_ARG_ENABLE(generated-files-in-srcdir,
169 [ --enable-generated-files-in-srcdir
170 put copies of generated files in source dir
171 intended for creating source tarballs for users
172 without texinfo bison or flex.],
173 generated_files_in_srcdir=$enableval,
174 generated_files_in_srcdir=no)
176 AC_MSG_RESULT($generated_files_in_srcdir)
178 if test "$generated_files_in_srcdir" = "yes"; then
185 # -------------------
186 # Find default linker
187 # -------------------
191 [ --with-gnu-ld arrange to work with GNU ld.],
192 gnu_ld_flag="$with_gnu_ld",
195 # With pre-defined ld
197 [ --with-ld arrange to use the specified ld (full pathname)],
198 DEFAULT_LINKER="$with_ld")
199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
200 if test ! -x "$DEFAULT_LINKER"; then
201 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
202 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
205 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
206 [Define to enable the use of a default linker.])
209 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
210 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
212 AC_MSG_CHECKING([whether a default linker was specified])
213 if test x"${DEFAULT_LINKER+set}" = x"set"; then
214 if test x"$gnu_ld_flag" = x"no"; then
215 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
217 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
223 # With demangler in GNU ld
224 AC_ARG_WITH(demangler-in-ld,
225 [ --with-demangler-in-ld try to use demangler in GNU ld.],
226 demangler_in_ld="$with_demangler_in_ld",
229 # ----------------------
230 # Find default assembler
231 # ----------------------
235 [ --with-gnu-as arrange to work with GNU as],
236 gas_flag="$with_gnu_as",
240 [ --with-as arrange to use the specified as (full pathname)],
241 DEFAULT_ASSEMBLER="$with_as")
242 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
243 if test ! -x "$DEFAULT_ASSEMBLER"; then
244 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
245 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
248 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
249 [Define to enable the use of a default assembler.])
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.
323 [whether ${CC} accepts -Wno-long-long],
324 [ac_cv_prog_cc_w_no_long_long],
325 [save_CFLAGS="$CFLAGS"
326 CFLAGS="-Wno-long-long"
327 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
328 [ac_cv_prog_cc_w_no_long_long=yes],
329 [ac_cv_prog_cc_w_no_long_long=no])
330 CFLAGS="$save_CFLAGS"
334 [whether ${CC} accepts -Wno-variadic-macros],
335 [ac_cv_prog_cc_w_no_variadic_macros],
336 [save_CFLAGS="$CFLAGS"
337 CFLAGS="-Wno-variadic-macros"
338 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
339 [ac_cv_prog_cc_w_no_variadic_macros=yes],
340 [ac_cv_prog_cc_w_no_variadic_macros=no])
341 CFLAGS="$save_CFLAGS"
345 [whether ${CC} accepts -Wno-overlength-strings],
346 [ac_cv_prog_cc_w_no_overlength_strings],
347 [save_CFLAGS="$CFLAGS"
348 CFLAGS="-Wno-overlength-strings"
349 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
350 [ac_cv_prog_cc_w_no_overlength_strings=yes],
351 [ac_cv_prog_cc_w_no_overlength_strings=no])
352 CFLAGS="$save_CFLAGS"
356 if test $ac_cv_prog_cc_w_no_long_long = yes \
357 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
358 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
359 strict_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
362 # Add -Wold-style-definition if it's accepted
364 [whether ${CC} accepts -Wold-style-definition],
365 [ac_cv_prog_cc_w_old_style_definition],
366 [save_CFLAGS="$CFLAGS"
367 CFLAGS="-Wold-style-definition"
368 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
369 [ac_cv_prog_cc_w_old_style_definition=yes],
370 [ac_cv_prog_cc_w_old_style_definition=no])
371 CFLAGS="$save_CFLAGS"
373 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
374 strict_warn="${strict_warn} -Wold-style-definition"
377 # Add -Wmissing-format-attribute if it's accepted
379 [whether ${CC} accepts -Wmissing-format-attribute],
380 [ac_cv_prog_cc_w_missing_format_attribute],
381 [save_CFLAGS="$CFLAGS"
382 CFLAGS="-Wmissing-format-attribute"
383 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
384 [ac_cv_prog_cc_w_missing_format_attribute=yes],
385 [ac_cv_prog_cc_w_missing_format_attribute=no])
386 CFLAGS="$save_CFLAGS"
388 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
389 strict_warn="${strict_warn} -Wmissing-format-attribute"
392 # Enable -Werror, period.
393 AC_ARG_ENABLE(werror_always,
394 [ --enable-werror-always enable -Werror always], [],
395 [enable_werror_always=no])
396 if test x${enable_werror_always} = xyes ; then
397 strict_warn="${strict_warn} -Werror"
399 AC_SUBST(strict_warn)
401 # Get C++ compatibility warning flag, if supported.
403 [whether ${CC} accepts -Wc++-compat],
404 [ac_cv_prog_cc_w_cxx_compat],
405 [save_CFLAGS="$CFLAGS"
406 CFLAGS="-Wc++-compat"
407 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
408 [ac_cv_prog_cc_w_cxx_compat=yes],
409 [ac_cv_prog_cc_w_cxx_compat=no])
410 CFLAGS="$save_CFLAGS"
412 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
413 cxx_compat_warn="-Wc++-compat"
415 AC_SUBST(cxx_compat_warn)
418 # If the native compiler is GCC, we can enable warnings even in stage1.
419 # That's useful for people building cross-compilers, or just running a
422 if test "x$GCC" = "xyes"; then
423 warn_cflags='$(GCC_WARN_CFLAGS)'
425 AC_SUBST(warn_cflags)
427 # Enable expensive internal checks
429 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
433 AC_ARG_ENABLE(checking,
434 [ --enable-checking[=LIST]
435 enable expensive run-time checks. With LIST,
436 enable only specific categories of checks.
437 Categories are: yes,no,all,none,release.
438 Flags are: assert,fold,gc,gcac,misc,
439 rtlflag,rtl,runtime,tree,valgrind.],
440 [ac_checking_flags="${enableval}"],[
441 # Determine the default checks.
442 if test x$is_release = x ; then
443 ac_checking_flags=yes
445 ac_checking_flags=release
451 ac_gc_always_collect=
454 ac_runtime_checking=1
456 ac_valgrind_checking=
457 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
458 for check in $ac_checking_flags
461 # these set all the flags to specific states
462 yes) ac_assert_checking=1 ; ac_checking=1 ;
463 ac_fold_checking= ; ac_gc_checking=1 ;
464 ac_gc_always_collect= ; ac_rtl_checking= ;
465 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
466 ac_tree_checking=1 ; ac_valgrind_checking= ;;
467 no|none) ac_assert_checking= ; ac_checking= ;
468 ac_fold_checking= ; ac_gc_checking= ;
469 ac_gc_always_collect= ; ac_rtl_checking= ;
470 ac_rtlflag_checking= ; ac_runtime_checking= ;
471 ac_tree_checking= ; ac_valgrind_checking= ;;
472 all) ac_assert_checking=1 ; ac_checking=1 ;
473 ac_fold_checking=1 ; ac_gc_checking=1 ;
474 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
475 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
476 ac_tree_checking=1 ; ac_valgrind_checking= ;;
477 release) ac_assert_checking=1 ; ac_checking= ;
478 ac_fold_checking= ; ac_gc_checking= ;
479 ac_gc_always_collect= ; ac_rtl_checking= ;
480 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
481 ac_tree_checking= ; ac_valgrind_checking= ;;
482 # these enable particular checks
483 assert) ac_assert_checking=1 ;;
484 fold) ac_fold_checking=1 ;;
485 gc) ac_gc_checking=1 ;;
486 gcac) ac_gc_always_collect=1 ;;
487 misc) ac_checking=1 ;;
488 rtl) ac_rtl_checking=1 ;;
489 rtlflag) ac_rtlflag_checking=1 ;;
490 runtime) ac_runtime_checking=1 ;;
491 tree) ac_tree_checking=1 ;;
492 valgrind) ac_valgrind_checking=1 ;;
493 *) AC_MSG_ERROR(unknown check category $check) ;;
499 if test x$ac_checking != x ; then
500 AC_DEFINE(ENABLE_CHECKING, 1,
501 [Define if you want more run-time sanity checks. This one gets a grab
502 bag of miscellaneous but relatively cheap checks.])
503 nocommon_flag=-fno-common
505 AC_SUBST(nocommon_flag)
506 if test x$ac_assert_checking != x ; then
507 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
508 [Define if you want assertions enabled. This is a cheap check.])
510 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
511 if test x$ac_runtime_checking != x ; then
512 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
513 [Define if you want runtime assertions enabled. This is a cheap check.])
515 if test x$ac_tree_checking != x ; then
516 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
517 [Define if you want all operations on trees (the basic data
518 structure of the front ends) to be checked for dynamic type safety
519 at runtime. This is moderately expensive. The tree browser debugging
520 routines will also be enabled by this option.
522 TREEBROWSER=tree-browser.o
524 AC_SUBST(TREEBROWSER)
525 if test x$ac_rtl_checking != x ; then
526 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
527 [Define if you want all operations on RTL (the basic data structure
528 of the optimizer and back end) to be checked for dynamic type safety
529 at runtime. This is quite expensive.])
531 if test x$ac_rtlflag_checking != x ; then
532 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
533 [Define if you want RTL flag accesses to be checked against the RTL
534 codes that are supported for each access macro. This is relatively
537 if test x$ac_gc_checking != x ; then
538 AC_DEFINE(ENABLE_GC_CHECKING, 1,
539 [Define if you want the garbage collector to do object poisoning and
540 other memory allocation checks. This is quite expensive.])
542 if test x$ac_gc_always_collect != x ; then
543 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
544 [Define if you want the garbage collector to operate in maximally
545 paranoid mode, validating the entire heap and collecting garbage at
546 every opportunity. This is extremely expensive.])
548 if test x$ac_fold_checking != x ; then
549 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
550 [Define if you want fold checked that it never destructs its argument.
551 This is quite expensive.])
553 valgrind_path_defines=
556 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
557 dnl # an if statement. This was the source of very frustrating bugs
558 dnl # in converting to autoconf 2.5x!
559 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
561 if test x$ac_valgrind_checking != x ; then
562 # It is certainly possible that there's valgrind but no valgrind.h.
563 # GCC relies on making annotations so we must have both.
564 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
565 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
566 [[#include <valgrind/memcheck.h>
567 #ifndef VALGRIND_DISCARD
568 #error VALGRIND_DISCARD not defined
570 [gcc_cv_header_valgrind_memcheck_h=yes],
571 [gcc_cv_header_valgrind_memcheck_h=no])
572 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
573 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
574 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
575 [[#include <memcheck.h>
576 #ifndef VALGRIND_DISCARD
577 #error VALGRIND_DISCARD not defined
579 [gcc_cv_header_memcheck_h=yes],
580 [gcc_cv_header_memcheck_h=no])
581 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
582 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
583 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
584 if test "x$valgrind_path" = "x" \
585 || (test $have_valgrind_h = no \
586 && test $gcc_cv_header_memcheck_h = no \
587 && test $gcc_cv_header_valgrind_memcheck_h = no); then
588 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
590 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
591 valgrind_command="$valgrind_path -q"
592 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
593 [Define if you want to run subprograms and generated programs
594 through valgrind (a memory checker). This is extremely expensive.])
595 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
596 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
597 [Define if valgrind's valgrind/memcheck.h header is installed.])
599 if test $gcc_cv_header_memcheck_h = yes; then
600 AC_DEFINE(HAVE_MEMCHECK_H, 1,
601 [Define if valgrind's memcheck.h header is installed.])
604 AC_SUBST(valgrind_path_defines)
605 AC_SUBST(valgrind_command)
607 AC_ARG_ENABLE(mapped-location,
608 [ --enable-mapped-location location_t is fileline integer cookie],,
609 enable_mapped_location=no)
611 if test "$enable_mapped_location" = yes ; then
612 AC_DEFINE(USE_MAPPED_LOCATION, 1,
613 [Define if location_t is fileline integer cookie.])
616 # Enable code coverage collection
617 AC_ARG_ENABLE(coverage,
618 [ --enable-coverage[=LEVEL]
619 enable compiler's code coverage collection.
620 Use to measure compiler performance and locate
621 unused parts of the compiler. With LEVEL, specify
622 optimization. Values are opt, noopt,
624 [case "${enableval}" in
626 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
629 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
632 # a.k.a. --disable-coverage
636 AC_MSG_ERROR(unknown coverage setting $enableval)
640 AC_SUBST(coverage_flags)
642 AC_ARG_ENABLE(gather-detailed-mem-stats,
643 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
644 [enable_gather_detailed_mem_stats=no])
645 if test x$enable_gather_detailed_mem_stats = xyes ; then
646 AC_DEFINE(GATHER_STATISTICS, 1,
647 [Define to enable detailed memory allocation stats gathering.])
650 # -------------------------------
651 # Miscenalleous configure options
652 # -------------------------------
656 [ --with-stabs arrange to use stabs instead of host debug format],
660 # Determine whether or not multilibs are enabled.
661 AC_ARG_ENABLE(multilib,
662 [ --enable-multilib enable library support for multiple ABIs],
663 [], [enable_multilib=yes])
664 AC_SUBST(enable_multilib)
666 # Enable __cxa_atexit for C++.
667 AC_ARG_ENABLE(__cxa_atexit,
668 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
671 # Enable C extension for decimal float if target supports it.
672 AC_ARG_ENABLE(decimal-float,
673 [ --enable-decimal-float={no,yes,bid,dpd}
674 enable decimal float extension to C. Selecting 'bid'
675 or 'dpd' choses which decimal floating point format
678 case $enable_decimal_float in
679 yes | no | bid | dpd) ;;
680 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
681 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
686 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
687 enable_decimal_float=yes
690 AC_MSG_WARN(decimal float is not supported for this target, ignored)
691 enable_decimal_float=no
696 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
697 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
698 [Define to 1 to enable decimal float extension to C.])
700 # x86's use BID format instead of DPD
701 case x$enable_decimal_float in
704 i?86*-*-linux* | x86_64*-*-linux*)
705 enable_decimal_float=bid
708 enable_decimal_float=dpd
713 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
714 # dependency on libdecnumber.
715 enable_decimal_float=dpd
718 AC_SUBST(enable_decimal_float)
720 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
721 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
722 [Define to 1 to specify that we are using the BID decimal floating
723 point format instead of DPD])
726 # Pass with no value to take the default
727 # Pass with a value to specify a thread package
728 AC_ARG_ENABLE(threads,
729 [ --enable-threads enable thread usage for target GCC
730 --enable-threads=LIB use LIB thread package for target GCC],,
734 [ --enable-tls enable or disable generation of tls code
735 overriding the assembler check for tls support],
739 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
740 Valid choices are 'yes' and 'no'.]) ;;
744 AC_ARG_ENABLE(objc-gc,
745 [ --enable-objc-gc enable the use of Boehm's garbage collector with
746 the GNU Objective-C runtime],
747 if test x$enable_objc_gc = xno; then
755 [ --with-dwarf2 force the default debug format to be DWARF 2],
756 dwarf2="$with_dwarf2",
759 AC_ARG_ENABLE(shared,
760 [ --disable-shared don't provide a shared libgcc],
762 case $enable_shared in
766 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
767 for pkg in $enableval; do
768 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
775 ], [enable_shared=yes])
776 AC_SUBST(enable_shared)
778 AC_ARG_WITH(build-sysroot,
779 [ --with-build-sysroot=sysroot
780 use sysroot as the system root during the build])
783 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
785 case ${with_sysroot} in
786 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
787 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
790 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
791 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
793 if test "x$prefix" = xNONE; then
794 test_prefix=/usr/local
798 if test "x$exec_prefix" = xNONE; then
799 test_exec_prefix=$test_prefix
801 test_exec_prefix=$exec_prefix
803 case ${TARGET_SYSTEM_ROOT} in
804 "${test_prefix}"|"${test_prefix}/"*|\
805 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
806 '${prefix}'|'${prefix}/'*|\
807 '${exec_prefix}'|'${exec_prefix}/'*)
808 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
809 TARGET_SYSTEM_ROOT_DEFINE="$t"
814 TARGET_SYSTEM_ROOT_DEFINE=
815 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
817 AC_SUBST(TARGET_SYSTEM_ROOT)
818 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
819 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
821 # Build with intermodule optimisations
822 AC_ARG_ENABLE(intermodule,
823 [ --enable-intermodule build the compiler in one step],
824 [case ${enable_intermodule} in
825 yes) onestep="-onestep";;
831 # Sanity check enable_languages in case someone does not run the toplevel
832 # configure # script.
833 AC_ARG_ENABLE(languages,
834 [ --enable-languages=LIST specify which front-ends to build],
835 [case ,${enable_languages}, in
837 # go safe -- we cannot be much sure without the toplevel
839 # analysis of which target libs are present and usable
843 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
848 enable_languages=c,${enable_languages}
851 [enable_languages=c])
853 # Used by documentation targets
854 AC_SUBST(datarootdir)
858 # -------------------------
859 # Checks for other programs
860 # -------------------------
864 # Find some useful tools
866 # We need awk to create options.c and options.h.
867 # Bail out if it's missing.
869 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
877 # By default, the Darwin ranlib will not treat common symbols as
878 # definitions when building the archive table of contents. Other
879 # ranlibs do that; pass an option to the Darwin ranlib that makes
880 # it behave similarly.
886 AC_SUBST(ranlib_flags)
890 # See if cmp has --ignore-initial.
891 gcc_AC_PROG_CMP_IGNORE_INITIAL
893 # See if we have the mktemp command.
894 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
896 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
898 # See if makeinfo has been installed and is modern enough
899 # that we can use it.
900 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
901 [GNU texinfo.* \([0-9][0-9.]*\)],
903 if test $gcc_cv_prog_makeinfo_modern = no; then
904 MAKEINFO="$MISSING makeinfo"
906 *** Makeinfo is missing or too old.
907 *** Info documentation will not be built.])
914 # Is pod2man recent enough to regenerate manpages?
915 AC_MSG_CHECKING([for recent Pod::Man])
916 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
918 GENERATED_MANPAGES=generated-manpages
923 AC_SUBST(GENERATED_MANPAGES)
926 dnl Don't use AC_PROG_LEX; we insist on flex.
927 dnl LEXLIB is not useful in gcc.
928 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
931 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
933 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
934 # check for build == host before using them.
937 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
938 && test -d ../binutils ; then
939 NM='$(objdir)/../binutils/nm-new'
941 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
945 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
946 && test -d ../binutils ; then
947 AR='$(objdir)/../binutils/ar'
949 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
953 # --------------------
954 # Checks for C headers
955 # --------------------
957 AC_MSG_CHECKING(for GNU C library)
958 AC_CACHE_VAL(gcc_cv_glibc,
959 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
960 [[#include <features.h>]], [[
961 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
962 #error Not a GNU C library system
966 AC_MSG_RESULT($gcc_cv_glibc)
967 if test $gcc_cv_glibc = yes; then
968 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
971 # Need to reject headers which give warnings, so that the -Werror bootstrap
972 # works later. *sigh* This needs to come before all header checks.
979 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
980 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
981 sys/resource.h sys/param.h sys/times.h sys/stat.h \
982 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
984 # Check for thread headers.
985 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
986 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
988 # These tests can't be done till we know if we have limits.h.
997 # These libraries may be used by collect2.
998 # We may need a special search path to get them linked.
999 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1001 for libs in '' -lld -lmld \
1002 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1003 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1006 AC_TRY_LINK_FUNC(ldopen,
1007 [gcc_cv_collect2_libs="$libs"; break])
1010 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1011 case $gcc_cv_collect2_libs in
1013 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1015 AC_SUBST(COLLECT2_LIBS)
1017 # When building Ada code on Alpha, we need exc_resume which is usually in
1018 # -lexc. So test for it.
1021 AC_SEARCH_LIBS(exc_resume, exc)
1024 AC_SUBST(GNAT_LIBEXC)
1026 # Some systems put ldexp and frexp in libm instead of libc; assume
1027 # they're both in the same place. jcf-dump needs them.
1030 AC_SEARCH_LIBS(ldexp, m)
1035 # Use <inttypes.h> only if it exists,
1036 # doesn't clash with <sys/types.h>, and declares intmax_t.
1037 AC_MSG_CHECKING(for inttypes.h)
1038 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1039 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1040 [[#include <sys/types.h>
1041 #include <inttypes.h>]],
1042 [[intmax_t i = -1;]])],
1043 [gcc_cv_header_inttypes_h=yes],
1044 [gcc_cv_header_inttypes_h=no])])
1045 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1046 if test $gcc_cv_header_inttypes_h = yes; then
1047 AC_DEFINE(HAVE_INTTYPES_H, 1,
1048 [Define if you have a working <inttypes.h> header file.])
1051 dnl Disabled until we have a complete test for buggy enum bitfields.
1052 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1054 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1055 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1056 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1057 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1058 putchar_unlocked putc_unlocked)
1059 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1060 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1061 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1064 if test x$ac_cv_func_mbstowcs = xyes; then
1065 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1066 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1072 [gcc_cv_func_mbstowcs_works=yes],
1073 [gcc_cv_func_mbstowcs_works=no],
1074 [gcc_cv_func_mbstowcs_works=yes])])
1075 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1076 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1077 [Define this macro if mbstowcs does not crash when its
1078 first argument is NULL.])
1082 AC_CHECK_TYPE(ssize_t, int)
1084 # Try to determine the array type of the second argument of getgroups
1085 # for the target system (int or gid_t).
1087 if test "${target}" = "${build}"; then
1088 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1091 # This condition may need some tweaking. It should include all
1092 # targets where the array type of the second argument of getgroups
1093 # is int and the type of gid_t is not equivalent to int.
1094 *-*-sunos* | *-*-ultrix*)
1095 TARGET_GETGROUPS_T=int
1098 TARGET_GETGROUPS_T=gid_t
1102 AC_SUBST(TARGET_GETGROUPS_T)
1104 gcc_AC_FUNC_MMAP_BLACKLIST
1108 # Under VMS, vfork works very differently than on Unix. The standard test
1109 # won't work, and it isn't easily adaptable. It makes more sense to
1111 ac_cv_func_vfork_works=yes
1117 # Until we have in-tree GNU iconv:
1119 AC_SUBST(LIBICONV_DEP)
1125 # We will need to find libiberty.h and ansidecl.h
1126 saved_CFLAGS="$CFLAGS"
1127 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1128 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1129 strsignal strstr strverscmp \
1130 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1131 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1132 #include "ansidecl.h"
1133 #include "system.h"])
1135 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1136 #include "ansidecl.h"
1138 #ifdef HAVE_SYS_RESOURCE_H
1139 #include <sys/resource.h>
1143 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1144 #include "ansidecl.h"
1146 #ifdef HAVE_SYS_RESOURCE_H
1147 #include <sys/resource.h>
1149 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1150 [Define to \`long' if <sys/resource.h> doesn't define.])])
1152 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1153 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1154 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1155 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1156 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1157 #include "ansidecl.h"
1166 gcc_AC_CHECK_DECLS(times, , ,[
1167 #include "ansidecl.h"
1169 #ifdef HAVE_SYS_TIMES_H
1170 #include <sys/times.h>
1174 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1175 #include "ansidecl.h"
1180 # More time-related stuff.
1181 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1182 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1183 #include "ansidecl.h"
1185 #ifdef HAVE_SYS_TIMES_H
1186 #include <sys/times.h>
1188 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1189 if test $ac_cv_struct_tms = yes; then
1190 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1191 [Define if <sys/times.h> defines struct tms.])
1194 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1195 # revisit after autoconf 2.50.
1196 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1197 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1198 #include "ansidecl.h"
1200 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1201 if test $gcc_cv_type_clock_t = yes; then
1202 AC_DEFINE(HAVE_CLOCK_T, 1,
1203 [Define if <time.h> defines clock_t.])
1206 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1207 CFLAGS="$saved_CFLAGS"
1209 gcc_AC_INITFINI_ARRAY
1211 # mkdir takes a single argument on some systems.
1212 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1220 # With Setjmp/Longjmp based exception handling.
1221 AC_ARG_ENABLE(sjlj-exceptions,
1222 [ --enable-sjlj-exceptions
1223 arrange to use setjmp/longjmp exception handling],
1224 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1225 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1226 [Define 0/1 to force the choice for exception handling model.])])
1228 # For platforms with the unwind ABI which includes an unwind library,
1229 # libunwind, we can choose to use the system libunwind.
1230 AC_ARG_WITH(system-libunwind,
1231 [ --with-system-libunwind use installed libunwind])
1233 # config.gcc also contains tests of with_system_libunwind.
1234 if test x$with_system_libunwind = xyes; then
1235 AC_DEFINE(HAVE_GETIPINFO, 1,
1236 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1239 # --------------------------------------------------------
1240 # Build, host, and target specific configuration fragments
1241 # --------------------------------------------------------
1243 # Collect build-machine-specific information.
1244 . ${srcdir}/config.build
1246 # Collect host-machine-specific information.
1247 . ${srcdir}/config.host
1251 # Collect target-machine-specific information.
1252 . ${srcdir}/config.gcc
1254 extra_objs="${host_extra_objs} ${extra_objs}"
1255 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1257 # Default the target-machine variables that were not explicitly set.
1258 if test x"$tm_file" = x
1259 then tm_file=$cpu_type/$cpu_type.h; fi
1261 if test x"$extra_headers" = x
1262 then extra_headers=; fi
1264 if test x$md_file = x
1265 then md_file=$cpu_type/$cpu_type.md; fi
1267 if test x$out_file = x
1268 then out_file=$cpu_type/$cpu_type.c; fi
1270 if test x"$tmake_file" = x
1271 then tmake_file=$cpu_type/t-$cpu_type
1274 if test x"$dwarf2" = xyes
1275 then tm_file="$tm_file tm-dwarf2.h"
1278 # Say what files are being used for the output code and MD file.
1279 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1280 echo "Using \`$srcdir/config/$md_file' as machine description file."
1282 # If any of the xm_file variables contain nonexistent files, warn
1283 # about them and drop them.
1286 for x in $build_xm_file; do
1287 if test -f $srcdir/config/$x
1289 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1295 for x in $host_xm_file; do
1296 if test -f $srcdir/config/$x
1298 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1304 for x in $xm_file; do
1305 if test -f $srcdir/config/$x
1307 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1313 for f in $tm_file; do
1316 if test $count = ax; then
1317 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1319 echo "Using the following target machine macro files:"
1320 for f in $tm_file; do
1321 echo " $srcdir/config/$f"
1325 if test x$need_64bit_hwint = xyes; then
1326 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1327 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1330 if test x$use_long_long_for_widest_fast_int = xyes; then
1331 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1332 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1333 efficiently supported by the host hardware.])
1337 for f in $host_xm_file; do
1340 if test $count = a; then
1342 elif test $count = ax; then
1343 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1345 echo "Using the following host machine macro files:"
1346 for f in $host_xm_file; do
1347 echo " $srcdir/config/$f"
1350 echo "Using ${out_host_hook_obj} for host machine hooks."
1352 if test "$host_xm_file" != "$build_xm_file"; then
1354 for f in $build_xm_file; do
1357 if test $count = a; then
1359 elif test $count = ax; then
1360 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1362 echo "Using the following build machine macro files:"
1363 for f in $build_xm_file; do
1364 echo " $srcdir/config/$f"
1371 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1372 gcc_cv_mcontext_underscores,
1374 #include <sys/cdefs.h>
1375 #include <sys/signal.h>
1376 #include <ucontext.h>
1377 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1379 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1380 if test $gcc_cv_mcontext_underscores = yes; then
1381 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1382 [mcontext_t fields start with __])
1391 # Check if a valid thread package
1392 case ${enable_threads} in
1395 target_thread_file='single'
1399 target_thread_file='single'
1401 aix | dce | gnat | irix | posix | posix95 | rtems | \
1402 single | solaris | vxworks | win32 )
1403 target_thread_file=${enable_threads}
1406 echo "${enable_threads} is an unknown thread package" 1>&2
1411 if test x${thread_file} = x; then
1412 # No thread file set by target-specific clauses in config.gcc,
1413 # so use file chosen by default logic above
1414 thread_file=${target_thread_file}
1417 # Make gthr-default.h if we have a thread file.
1419 if test $thread_file != single; then
1420 rm -f gthr-default.h
1421 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1422 gthread_flags=-DHAVE_GTHR_DEFAULT
1424 AC_SUBST(gthread_flags)
1431 if test x$enable___cxa_atexit = xyes || \
1432 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1433 if test x$host = x$target; then
1435 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1436 # keyed to flag_use_cxa_atexit
1441 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1442 [echo "__cxa_atexit can't be enabled on this target"])
1446 # We can't check for __cxa_atexit when building a cross, so assume
1450 if test x$use_cxa_atexit = xyes; then
1451 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1452 [Define if you want to use __cxa_atexit, rather than atexit, to
1453 register C++ destructors for local statics and global objects.
1454 This is essential for fully standards-compliant handling of
1455 destructors, but requires __cxa_atexit in libc.])
1460 if test x$with_system_libunwind = xyes; then
1461 if test x$host = x$target; then
1462 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1465 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1466 if test x$use_getipinfo = xyes; then
1467 AC_DEFINE(HAVE_GETIPINFO, 1,
1468 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1470 echo "The system unwind library does not support _Unwind_GetIPInfo."
1473 # Look for a file containing extra machine modes.
1474 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1475 extra_modes_file='$(srcdir)'/config/${extra_modes}
1476 AC_SUBST(extra_modes_file)
1477 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1478 [Define to the name of a file containing a list of extra machine modes
1479 for this architecture.])
1482 # Convert extra_options into a form suitable for Makefile use.
1484 for f in $extra_options; do
1485 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1487 AC_SUBST(extra_opt_files)
1489 # auto-host.h is the file containing items generated by autoconf and is
1490 # the first file included by config.h.
1491 # If host=build, it is correct to have bconfig include auto-host.h
1492 # as well. If host!=build, we are in error and need to do more
1493 # work to find out the build config parameters.
1494 if test x$host = x$build
1496 build_auto=auto-host.h
1498 # We create a subdir, then run autoconf in the subdir.
1499 # To prevent recursion we set host and build for the new
1500 # invocation of configure to the build for this invocation
1507 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1508 *) realsrcdir=../${srcdir};;
1510 saved_CFLAGS="${CFLAGS}"
1511 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1512 ${realsrcdir}/configure \
1513 --enable-languages=${enable_languages-all} \
1514 --target=$target_alias --host=$build_alias --build=$build_alias
1515 CFLAGS="${saved_CFLAGS}"
1517 # We just finished tests for the build machine, so rename
1518 # the file auto-build.h in the gcc directory.
1519 mv auto-host.h ../auto-build.h
1522 build_auto=auto-build.h
1524 AC_SUBST(build_subdir)
1526 tm_file="${tm_file} defaults.h"
1527 tm_p_file="${tm_p_file} tm-preds.h"
1528 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1529 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1530 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1531 # put this back in temporarily.
1532 xm_file="auto-host.h ansidecl.h ${xm_file}"
1539 # Compile in configure arguments.
1540 if test -f configargs.h ; then
1541 # Being re-configured.
1542 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1543 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1545 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1548 # Double all backslashes and backslash all quotes to turn
1549 # gcc_config_arguments into a C string.
1550 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1551 $gcc_config_arguments
1553 gcc_config_arguments_str=`cat conftest.out`
1556 cat > configargs.h <<EOF
1557 /* Generated automatically. */
1558 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1559 static const char thread_model[] = "$thread_file";
1561 static const struct {
1562 const char *name, *value;
1563 } configure_default_options[] = $configure_default_options;
1567 # Internationalization
1568 ZW_GNU_GETTEXT_SISTER_DIR
1570 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1571 # -liconv on the link line twice.
1572 case "$LIBINTL" in *$LIBICONV*)
1576 AC_ARG_ENABLE(secureplt,
1577 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1580 # Windows32 Registry support for specifying GCC installation paths.
1581 AC_ARG_ENABLE(win32-registry,
1582 [ --disable-win32-registry
1583 disable lookup of installation paths in the
1584 Registry on Windows hosts
1585 --enable-win32-registry enable registry lookup (default)
1586 --enable-win32-registry=KEY
1587 use KEY instead of GCC version as the last portion
1588 of the registry key],,)
1591 win32 | pe | cygwin* | mingw32* | uwin*)
1592 if test "x$enable_win32_registry" != xno; then
1593 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1596 if test "x$enable_win32_registry" != xno; then
1597 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1598 [Define to 1 if installation paths should be looked up in the Windows
1599 Registry. Ignored on non-Windows hosts.])
1601 if test "x$enable_win32_registry" != xyes \
1602 && test "x$enable_win32_registry" != x; then
1603 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1604 [Define to be the last component of the Windows registry key under which
1605 to look for installation paths. The full key used will be
1606 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1607 The default is the GCC version number.])
1613 # Get an absolute path to the GCC top-level source directory
1614 holddir=`${PWDCMD-pwd}`
1616 topdir=`${PWDCMD-pwd}`
1619 # Conditionalize the makefile for this host machine.
1621 for f in ${host_xmake_file}
1623 if test -f ${srcdir}/config/$f
1625 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1629 # Conditionalize the makefile for this target machine.
1631 for f in ${tmake_file}
1633 if test -f ${srcdir}/config/$f
1635 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1638 tmake_file="${tmake_file_}"
1640 # This is a terrible hack which will go away some day.
1641 host_cc_for_libada=${CC}
1642 AC_SUBST(host_cc_for_libada)
1644 out_object_file=`basename $out_file .c`.o
1646 tm_file_list="options.h"
1647 tm_include_list="options.h"
1648 for f in $tm_file; do
1651 f=`echo $f | sed 's/^..//'`
1652 tm_file_list="${tm_file_list} $f"
1653 tm_include_list="${tm_include_list} $f"
1656 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1657 tm_include_list="${tm_include_list} $f"
1660 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1661 tm_include_list="${tm_include_list} config/$f"
1668 for f in $tm_p_file; do
1671 tm_p_file_list="${tm_p_file_list} $f"
1672 tm_p_include_list="${tm_p_include_list} $f"
1675 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1676 tm_p_include_list="${tm_p_include_list} config/$f"
1682 for f in $xm_file; do
1685 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1686 xm_include_list="${xm_include_list} $f"
1689 xm_file_list="${xm_file_list} $f"
1690 xm_include_list="${xm_include_list} $f"
1693 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1694 xm_include_list="${xm_include_list} config/$f"
1700 host_xm_include_list=
1701 for f in $host_xm_file; do
1704 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1705 host_xm_include_list="${host_xm_include_list} $f"
1708 host_xm_file_list="${host_xm_file_list} $f"
1709 host_xm_include_list="${host_xm_include_list} $f"
1712 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1713 host_xm_include_list="${host_xm_include_list} config/$f"
1719 for f in $build_xm_file; do
1722 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1723 build_xm_include_list="${build_xm_include_list} $f"
1725 auto-build.h | auto-host.h )
1726 build_xm_file_list="${build_xm_file_list} $f"
1727 build_xm_include_list="${build_xm_include_list} $f"
1730 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1731 build_xm_include_list="${build_xm_include_list} config/$f"
1736 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1737 # cross-compiler which does not use the native headers and libraries.
1738 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1739 CROSS= AC_SUBST(CROSS)
1740 ALL=all.internal AC_SUBST(ALL)
1741 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1743 if test "x$with_build_sysroot" != x; then
1744 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1746 # This value is used, even on a native system, because
1747 # CROSS_SYSTEM_HEADER_DIR is just
1748 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1749 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1752 if test x$host != x$target
1754 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1756 SYSTEM_HEADER_DIR=$build_system_header_dir
1757 case "$host","$target" in
1758 # Darwin crosses can use the host system's libraries and headers,
1759 # because of the fat library support. Of course, it must be the
1760 # same version of Darwin on both sides. Allow the user to
1761 # just say --target=foo-darwin without a version number to mean
1762 # "the version on this system".
1763 *-*-darwin*,*-*-darwin*)
1764 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1765 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1766 if test $hostos = $targetos -o $targetos = darwin ; then
1768 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1773 i?86-*-*,x86_64-*-* \
1774 | powerpc*-*-*,powerpc64*-*-*)
1775 CROSS="$CROSS -DNATIVE_CROSS" ;;
1777 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1778 SYSTEM_HEADER_DIR=$build_system_header_dir
1781 # If this is a cross-compiler that does not
1782 # have its own set of headers then define
1785 # If this is using newlib, without having the headers available now,
1786 # then define inhibit_libc in LIBGCC2_CFLAGS.
1787 # This prevents libgcc2 from containing any code which requires libc
1790 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1791 test x$with_newlib = xyes ; } &&
1792 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1795 AC_SUBST(inhibit_libc)
1797 # When building gcc with a cross-compiler, we need to adjust things so
1798 # that the generator programs are still built with the native compiler.
1799 # Also, we cannot run fixincludes or fix-header.
1801 # These are the normal (build=host) settings:
1802 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1803 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1804 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1806 # Possibly disable fixproto, on a per-target basis.
1807 case ${use_fixproto} in
1812 STMP_FIXPROTO=stmp-fixproto
1815 AC_SUBST(STMP_FIXPROTO)
1817 # And these apply if build != host, or we are generating coverage data
1818 if test x$build != x$host || test "x$coverage_flags" != x
1820 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1822 if test "x$TARGET_SYSTEM_ROOT" = x; then
1823 if test "x$STMP_FIXPROTO" != x; then
1824 STMP_FIXPROTO=stmp-install-fixproto
1829 # Expand extra_headers to include complete path.
1830 # This substitutes for lots of t-* files.
1832 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1833 for file in ${extra_headers} ; do
1834 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1837 # Define collect2 in Makefile.
1838 case $host_can_use_collect2 in
1840 *) collect2='collect2$(exeext)' ;;
1842 AC_SUBST([collect2])
1844 # Add a definition of USE_COLLECT2 if system wants one.
1845 case $use_collect2 in
1846 no) use_collect2= ;;
1849 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1850 xm_defines="${xm_defines} USE_COLLECT2"
1851 case $host_can_use_collect2 in
1853 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1859 # ---------------------------
1860 # Assembler & linker features
1861 # ---------------------------
1863 # Identify the assembler which will work hand-in-glove with the newly
1864 # built GCC, so that we can examine its features. This is the assembler
1865 # which will be driven by the driver program.
1867 # If build != host, and we aren't building gas in-tree, we identify a
1868 # build->target assembler and hope that it will have the same features
1869 # as the host->target assembler we'll be using.
1870 gcc_cv_gas_major_version=
1871 gcc_cv_gas_minor_version=
1872 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1874 m4_pattern_allow([AS_FOR_TARGET])dnl
1875 AS_VAR_SET_IF(gcc_cv_as,, [
1876 if test -x "$DEFAULT_ASSEMBLER"; then
1877 gcc_cv_as="$DEFAULT_ASSEMBLER"
1878 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1879 && test -f ../gas/Makefile \
1880 && test x$build = x$host; then
1881 gcc_cv_as=../gas/as-new$build_exeext
1882 elif test -x as$build_exeext; then
1883 # Build using assembler in the current directory.
1884 gcc_cv_as=./as$build_exeext
1885 elif test -x $AS_FOR_TARGET; then
1886 gcc_cv_as="$AS_FOR_TARGET"
1888 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1891 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1892 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1893 case "$ORIGINAL_AS_FOR_TARGET" in
1894 ./as | ./as$build_exeext) ;;
1895 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1898 AC_MSG_CHECKING(what assembler to use)
1899 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1900 # Single tree build which includes gas. We want to prefer it
1901 # over whatever linker top-level may have detected, since
1902 # we'll use what we're building after installation anyway.
1903 AC_MSG_RESULT(newly built gas)
1905 _gcc_COMPUTE_GAS_VERSION
1906 in_tree_gas_is_elf=no
1907 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1908 || (grep 'obj_format = multi' ../gas/Makefile \
1909 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1911 in_tree_gas_is_elf=yes
1914 AC_MSG_RESULT($gcc_cv_as)
1918 # Identify the linker which will work hand-in-glove with the newly
1919 # built GCC, so that we can examine its features. This is the linker
1920 # which will be driven by the driver program.
1922 # If build != host, and we aren't building gas in-tree, we identify a
1923 # build->target linker and hope that it will have the same features
1924 # as the host->target linker we'll be using.
1925 gcc_cv_gld_major_version=
1926 gcc_cv_gld_minor_version=
1927 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1928 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1930 AS_VAR_SET_IF(gcc_cv_ld,, [
1931 if test -x "$DEFAULT_LINKER"; then
1932 gcc_cv_ld="$DEFAULT_LINKER"
1933 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1934 && test -f ../ld/Makefile \
1935 && test x$build = x$host; then
1936 gcc_cv_ld=../ld/ld-new$build_exeext
1937 elif test -x collect-ld$build_exeext; then
1938 # Build using linker in the current directory.
1939 gcc_cv_ld=./collect-ld$build_exeext
1940 elif test -x $LD_FOR_TARGET; then
1941 gcc_cv_ld="$LD_FOR_TARGET"
1943 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1946 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1947 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1948 case "$ORIGINAL_LD_FOR_TARGET" in
1949 ./collect-ld | ./collect-ld$build_exeext) ;;
1950 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1953 AC_MSG_CHECKING(what linker to use)
1954 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1955 # Single tree build which includes ld. We want to prefer it
1956 # over whatever linker top-level may have detected, since
1957 # we'll use what we're building after installation anyway.
1958 AC_MSG_RESULT(newly built ld)
1960 in_tree_ld_is_elf=no
1961 if (grep 'EMUL = .*elf' ../ld/Makefile \
1962 || grep 'EMUL = .*linux' ../ld/Makefile \
1963 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1964 in_tree_ld_is_elf=yes
1966 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
1969 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1970 if test x$gcc_cv_gld_version != x; then
1974 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1975 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1978 AC_MSG_RESULT($gcc_cv_ld)
1982 # Figure out what nm we will be using.
1983 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1984 AS_VAR_SET_IF(gcc_cv_nm,, [
1985 if test -f $gcc_cv_binutils_srcdir/configure.in \
1986 && test -f ../binutils/Makefile \
1987 && test x$build = x$host; then
1988 gcc_cv_nm=../binutils/nm-new$build_exeext
1989 elif test -x nm$build_exeext; then
1990 gcc_cv_nm=./nm$build_exeext
1991 elif test -x $NM_FOR_TARGET; then
1992 gcc_cv_nm="$NM_FOR_TARGET"
1994 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1997 AC_MSG_CHECKING(what nm to use)
1998 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1999 # Single tree build which includes binutils.
2000 AC_MSG_RESULT(newly built nm)
2003 AC_MSG_RESULT($gcc_cv_nm)
2007 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2008 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2009 case "$ORIGINAL_NM_FOR_TARGET" in
2010 ./nm | ./nm$build_exeext) ;;
2011 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2015 # Figure out what objdump we will be using.
2016 AS_VAR_SET_IF(gcc_cv_objdump,, [
2017 if test -f $gcc_cv_binutils_srcdir/configure.in \
2018 && test -f ../binutils/Makefile \
2019 && test x$build = x$host; then
2020 # Single tree build which includes binutils.
2021 gcc_cv_objdump=../binutils/objdump$build_exeext
2022 elif test -x objdump$build_exeext; then
2023 gcc_cv_objdump=./objdump$build_exeext
2024 elif test -x $OBJDUMP_FOR_TARGET; then
2025 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2027 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2030 AC_MSG_CHECKING(what objdump to use)
2031 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2032 # Single tree build which includes binutils.
2033 AC_MSG_RESULT(newly built objdump)
2034 elif test x$gcc_cv_objdump = x; then
2035 AC_MSG_RESULT(not found)
2037 AC_MSG_RESULT($gcc_cv_objdump)
2040 # Figure out what assembler alignment features are present.
2041 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2045 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2046 [Define if your assembler supports .balign and .p2align.])])
2048 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2051 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2052 [Define if your assembler supports specifying the maximum number
2053 of bytes to skip when using the GAS .p2align command.])])
2055 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2058 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2059 [Define if your assembler supports .literal16.])])
2061 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2063 [conftest_label1: .word 0
2065 conftest_label2: .word 0
2067 [if test x$gcc_cv_nm != x; then
2068 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2069 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2070 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2072 else gcc_cv_as_subsection_m1=yes
2074 rm -f conftest.nm1 conftest.nm2
2076 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2077 [Define if your assembler supports .subsection and .subsection -1 starts
2078 emitting at the beginning of your section.])])
2080 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2083 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2085 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2087 [ .weakref foobar, barfnot],,
2088 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2090 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2093 .NSUBSPA $CODE$,COMDAT],,
2094 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2096 # .hidden needs to be supported in both the assembler and the linker,
2097 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2098 # This is irritatingly difficult to feature test for; we have to check the
2099 # date string after the version number. If we've got an in-tree
2100 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2102 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2103 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2108 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2109 [if test $in_tree_ld = yes ; then
2111 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2112 && test $in_tree_ld_is_elf = yes; then
2113 gcc_cv_ld_hidden=yes
2116 gcc_cv_ld_hidden=yes
2117 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2118 if echo "$ld_ver" | grep GNU > /dev/null; then
2120 ld_vers=`echo $ld_ver | sed -n \
2121 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2122 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2123 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2124 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2125 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2126 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2127 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2128 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2129 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2130 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2131 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2132 if test 0"$ld_date" -lt 20020404; then
2133 if test -n "$ld_date"; then
2134 # If there was date string, but was earlier than 2002-04-04, fail
2136 elif test -z "$ld_vers"; then
2137 # If there was no date string nor ld version number, something is wrong
2140 test -z "$ld_vers_patch" && ld_vers_patch=0
2141 if test "$ld_vers_major" -lt 2; then
2143 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2144 gcc_cv_ld_hidden="no"
2145 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2153 hppa64*-*-hpux* | ia64*-*-hpux*)
2154 gcc_cv_ld_hidden=yes
2162 libgcc_visibility=no
2163 AC_SUBST(libgcc_visibility)
2164 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2165 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2166 libgcc_visibility=yes
2167 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2168 [Define if your assembler and linker support .hidden.])
2171 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2172 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2180 [# GAS versions before 2.11 do not support uleb128,
2181 # despite appearing to.
2182 # ??? There exists an elf-specific test that will crash
2183 # the assembler. Perhaps it's better to figure out whether
2184 # arbitrary sections are supported and try the test.
2185 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2186 if echo "$as_ver" | grep GNU > /dev/null; then
2188 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2189 as_major=`echo $as_ver | sed 's/\..*//'`
2190 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2192 if test $as_major -eq 2 && test $as_minor -lt 11
2194 else gcc_cv_as_leb128=yes
2197 [AC_DEFINE(HAVE_AS_LEB128, 1,
2198 [Define if your assembler supports .sleb128 and .uleb128.])])
2200 # GAS versions up to and including 2.11.0 may mis-optimize
2202 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2210 .section .eh_frame,"aw",@progbits
2212 .4byte .LECIE1-.LSCIE1
2226 .4byte .LEFDE1-.LASFDE1
2228 .4byte .LASFDE1-__FRAME_BEGIN__
2236 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2237 cat > conftest.lit <<EOF
2238 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2239 0010 01000000 12000000 18000000 00000000 ................
2240 0020 08000000 04080000 0044 .........D @&t@
2242 cat > conftest.big <<EOF
2243 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2244 0010 00000001 00000012 00000018 00000000 ................
2245 0020 00000008 04000000 0844 .........D @&t@
2247 # If the assembler didn't choke, and we can objdump,
2248 # and we got the correct data, then succeed.
2249 # The text in the here-document typically retains its unix-style line
2250 # endings, while the output of objdump will use host line endings.
2251 # Therefore, use diff -b for the comparisons.
2252 if test x$gcc_cv_objdump != x \
2253 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2254 | tail -3 > conftest.got \
2255 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2256 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2258 gcc_cv_as_eh_frame=yes
2259 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2260 gcc_cv_as_eh_frame=buggy
2262 # Uh oh, what do we do now?
2263 gcc_cv_as_eh_frame=no
2266 if test $gcc_cv_as_eh_frame = buggy; then
2267 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2268 [Define if your assembler mis-optimizes .eh_frame data.])
2271 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2272 [elf,2,12,0], [--fatal-warnings],
2273 [.section .rodata.str, "aMS", @progbits, 1])
2274 if test $gcc_cv_as_shf_merge = no; then
2275 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2276 [elf,2,12,0], [--fatal-warnings],
2277 [.section .rodata.str, "aMS", %progbits, 1])
2279 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2280 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2281 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2283 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2284 [elf,2,16,0], [--fatal-warnings],
2285 [.section .text,"axG",@progbits,.foo,comdat])
2286 if test $gcc_cv_as_comdat_group = yes; then
2287 gcc_cv_as_comdat_group_percent=no
2289 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2290 [elf,2,16,0], [--fatal-warnings],
2291 [.section .text,"axG",%progbits,.foo,comdat])
2293 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2295 if test 0"$ld_date" -lt 20050308; then
2296 if test -n "$ld_date"; then
2297 # If there was date string, but was earlier than 2005-03-08, fail
2299 elif test "$ld_vers_major" -lt 2; then
2301 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2306 # assume linkers other than GNU ld don't support COMDAT group
2309 if test $comdat_group = no; then
2310 gcc_cv_as_comdat_group=no
2311 gcc_cv_as_comdat_group_percent=no
2313 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2314 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2315 [Define 0/1 if your assembler and linker support COMDAT groups.])
2317 # Thread-local storage - the check is heavily parametrized.
2326 .section ".tdata","awT",@progbits
2329 ldq $27,__tls_get_addr($29) !literal!1
2330 lda $16,foo($29) !tlsgd!1
2331 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2332 ldq $27,__tls_get_addr($29) !literal!2
2333 lda $16,foo($29) !tlsldm!2
2334 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2335 ldq $1,foo($29) !gotdtprel
2336 ldah $2,foo($29) !dtprelhi
2337 lda $3,foo($2) !dtprello
2338 lda $4,foo($29) !dtprel
2339 ldq $1,foo($29) !gottprel
2340 ldah $2,foo($29) !tprelhi
2341 lda $3,foo($2) !tprello
2342 lda $4,foo($29) !tprel'
2345 tls_as_opt=--fatal-warnings
2349 .section ".tdata","awT",@progbits
2361 .section ".tdata","awT",@progbits
2365 addil LT%foo-$tls_gdidx$,gp
2366 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2369 addil LT%foo-$tls_ldidx$,gp
2371 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2372 addil LR%foo-$tls_dtpoff$,%ret0
2373 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2375 addil LT%foo-$tls_ieoff$,gp
2376 ldw RT%foo-$tls_ieoff$(%r1),%t2
2379 addil LR%foo-$tls_leoff$,%t1
2380 ldo RR%foo-$tls_leoff$(%r1),%t2'
2383 tls_as_opt=--fatal-warnings
2387 .section ".tdata","awT",%progbits
2400 .section ".tdata","awT",@progbits
2404 leal foo@TLSGD(,%ebx,1), %eax
2405 leal foo@TLSLDM(%ebx), %eax
2406 leal foo@DTPOFF(%eax), %edx
2407 movl foo@GOTTPOFF(%ebx), %eax
2408 subl foo@GOTTPOFF(%ebx), %eax
2409 addl foo@GOTNTPOFF(%ebx), %eax
2410 movl foo@INDNTPOFF, %eax
2411 movl $foo@TPOFF, %eax
2412 subl $foo@TPOFF, %eax
2413 leal foo@NTPOFF(%ecx), %eax'
2416 tls_as_opt=--fatal-warnings
2420 .section ".tdata","awT",@progbits
2424 leaq foo@TLSGD(%rip), %rdi
2425 leaq foo@TLSLD(%rip), %rdi
2426 leaq foo@DTPOFF(%rax), %rdx
2427 movq foo@GOTTPOFF(%rip), %rax
2428 movq $foo@TPOFF, %rax'
2431 tls_as_opt=--fatal-warnings
2435 .section ".tdata","awT",@progbits
2438 addl r16 = @ltoff(@dtpmod(foo#)), gp
2439 addl r17 = @ltoff(@dtprel(foo#)), gp
2440 addl r18 = @ltoff(@tprel(foo#)), gp
2441 addl r19 = @dtprel(foo#), gp
2442 adds r21 = @dtprel(foo#), r13
2443 movl r23 = @dtprel(foo#)
2444 addl r20 = @tprel(foo#), gp
2445 adds r22 = @tprel(foo#), r13
2446 movl r24 = @tprel(foo#)'
2449 tls_as_opt=--fatal-warnings
2453 .section .tdata,"awT",@progbits
2457 addiu $4, $28, %tlsgd(x)
2458 addiu $4, $28, %tlsldm(x)
2459 lui $4, %dtprel_hi(x)
2460 addiu $4, $4, %dtprel_lo(x)
2461 lw $4, %gottprel(x)($28)
2462 lui $4, %tprel_hi(x)
2463 addiu $4, $4, %tprel_lo(x)'
2466 tls_as_opt='-32 --fatal-warnings'
2470 .section ".tdata","awT",@progbits
2478 addi 3,31,ld0@got@tlsgd
2480 addi 3,31,x1@got@tlsld
2483 addis 9,3,x2@dtprel@ha
2484 addi 9,9,x2@dtprel@l
2485 lwz 9,x3@got@tprel(31)
2488 addis 9,2,x2@tprel@ha
2489 addi 9,9,x2@tprel@l'
2492 tls_as_opt="-a32 --fatal-warnings"
2496 .section ".tdata","awT",@progbits
2504 addi 3,2,ld0@got@tlsgd
2510 addi 3,2,x1@got@tlsld
2516 addis 9,3,x2@dtprel@ha
2517 addi 9,9,x2@dtprel@l
2520 ld 9,x3@got@dtprel(2)
2526 tls_as_opt="-a64 --fatal-warnings"
2530 .section ".tdata","awT",@progbits
2539 l %r1,foo@GOTNTPOFF(%r12)
2540 l %r1,0(%r1):tls_load:foo
2541 bas %r14,0(%r1,%r13):tls_gdcall:foo
2542 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2545 tls_as_opt="-m31 --fatal-warnings"
2549 .section ".tdata","awT",@progbits
2557 lg %r1,foo@GOTNTPOFF(%r12)
2558 larl %r1,foo@INDNTPOFF
2559 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2560 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2563 tls_as_opt="-m64 -Aesame --fatal-warnings"
2565 sh-*-* | sh[34]-*-*)
2567 .section ".tdata","awT",@progbits
2577 tls_as_opt=--fatal-warnings
2581 sparc*-sun-solaris2.[56789]*)
2582 # TLS was introduced in the Solaris 9 4/04 release but
2583 # we do not enable it by default on Solaris 9 either.
2584 if test "x$enable_tls" = xyes ; then
2590 sparc*-sun-solaris2.*)
2597 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2599 .section ".tdata",#alloc,#write,#tls
2602 sethi %tgd_hi22(foo), %o0
2603 add %o0, %tgd_lo10(foo), %o1
2604 add %l7, %o1, %o0, %tgd_add(foo)
2605 call __tls_get_addr, %tgd_call(foo)
2606 sethi %tldm_hi22(foo), %l1
2607 add %l1, %tldm_lo10(foo), %l2
2608 add %l7, %l2, %o0, %tldm_add(foo)
2609 call __tls_get_addr, %tldm_call(foo)
2610 sethi %tldo_hix22(foo), %l3
2611 xor %l3, %tldo_lox10(foo), %l4
2612 add %o0, %l4, %l5, %tldo_add(foo)
2613 sethi %tie_hi22(foo), %o3
2614 add %o3, %tie_lo10(foo), %o3
2615 ld [%l7 + %o3], %o2, %tie_ld(foo)
2616 add %g7, %o2, %o4, %tie_add(foo)
2617 sethi %tle_hix22(foo), %l1
2618 xor %l1, %tle_lox10(foo), %o5
2619 ld [%g7 + %o5], %o1'
2624 .section ".tdata","awT",@progbits
2627 sethi %tgd_hi22(foo), %o0
2628 add %o0, %tgd_lo10(foo), %o1
2629 add %l7, %o1, %o0, %tgd_add(foo)
2630 call __tls_get_addr, %tgd_call(foo)
2631 sethi %tldm_hi22(foo), %l1
2632 add %l1, %tldm_lo10(foo), %l2
2633 add %l7, %l2, %o0, %tldm_add(foo)
2634 call __tls_get_addr, %tldm_call(foo)
2635 sethi %tldo_hix22(foo), %l3
2636 xor %l3, %tldo_lox10(foo), %l4
2637 add %o0, %l4, %l5, %tldo_add(foo)
2638 sethi %tie_hi22(foo), %o3
2639 add %o3, %tie_lo10(foo), %o3
2640 ld [%l7 + %o3], %o2, %tie_ld(foo)
2641 add %g7, %o2, %o4, %tie_add(foo)
2642 sethi %tle_hix22(foo), %l1
2643 xor %l1, %tle_lox10(foo), %o5
2644 ld [%g7 + %o5], %o1'
2647 tls_as_opt="-32 --fatal-warnings"
2653 if test "x$enable_tls" = xno ; then
2654 : # TLS explicitly disabled.
2655 elif test "x$enable_tls" = xyes ; then
2656 set_have_as_tls=yes # TLS explicitly enabled.
2657 elif test -z "$tls_first_major"; then
2658 : # If we don't have a check, assume no support.
2660 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2661 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2662 [set_have_as_tls=yes])
2664 if test $set_have_as_tls = yes ; then
2665 AC_DEFINE(HAVE_AS_TLS, 1,
2666 [Define if your assembler supports thread-local storage.])
2669 # Target-specific assembler checks.
2671 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2672 gcc_cv_ld_static_dynamic=no
2673 if test $in_tree_ld = yes ; then
2674 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2675 gcc_cv_ld_static_dynamic=yes
2677 elif test x$gcc_cv_ld != x; then
2678 # Check if linker supports -Bstatic/-Bdynamic option
2679 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2680 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2681 gcc_cv_ld_static_dynamic=yes
2684 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2685 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2686 [Define if your linker supports -Bstatic/-Bdynamic option.])
2688 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2690 if test x"$demangler_in_ld" = xyes; then
2691 AC_MSG_CHECKING(linker --demangle support)
2692 gcc_cv_ld_demangle=no
2693 if test $in_tree_ld = yes; then
2694 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2695 gcc_cv_ld_demangle=yes
2697 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2698 # Check if the GNU linker supports --demangle option
2699 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2700 gcc_cv_ld_demangle=yes
2703 if test x"$gcc_cv_ld_demangle" = xyes; then
2704 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2705 [Define if your linker supports --demangle option.])
2707 AC_MSG_RESULT($gcc_cv_ld_demangle)
2711 # All TARGET_ABI_OSF targets.
2712 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2713 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2714 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2717 extbl $3, $2, $3 !lituse_bytoff!1
2718 ldq $2, a($29) !literal!1
2719 ldq $4, b($29) !literal!2
2720 ldq_u $3, 0($2) !lituse_base!1
2721 ldq $27, f($29) !literal!5
2722 jsr $26, ($27), f !lituse_jsr!5
2723 ldah $29, 0($26) !gpdisp!3
2724 lda $0, c($29) !gprel
2725 ldah $1, d($29) !gprelhigh
2726 lda $1, d($1) !gprellow
2727 lda $29, 0($29) !gpdisp!3],,
2728 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2729 [Define if your assembler supports explicit relocations.])])
2730 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2731 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2734 ldq $27, a($29) !literal!1
2735 jsr $26, ($27), a !lituse_jsrdirect!1],,
2736 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2737 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2741 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2742 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2743 [-no-mul-bug-abort], [.text],,
2744 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2745 [Define if your assembler supports the -no-mul-bug-abort option.])])
2749 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2750 [.register %g2, #scratch],,
2751 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2752 [Define if your assembler supports .register.])])
2754 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2756 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2757 [Define if your assembler supports -relax option.])])
2759 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2760 gcc_cv_as_sparc_ua_pcrel,,
2768 .uaword %r_disp32(foo)],
2769 [if test x$gcc_cv_ld != x \
2770 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2771 gcc_cv_as_sparc_ua_pcrel=yes
2774 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2775 [Define if your assembler and linker support unaligned PC relative relocs.])
2777 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2778 gcc_cv_as_sparc_ua_pcrel_hidden,,
2783 .uaword %r_disp32(foo)
2784 .byte 0x32, 0x33, 0x34
2789 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2790 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2791 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2792 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2793 if $gcc_cv_objdump -R conftest 2> /dev/null \
2794 | grep 'DISP32' > /dev/null 2>&1; then
2797 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2801 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2802 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2803 ]) # unaligned pcrel relocs
2805 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2806 gcc_cv_as_sparc_offsetable_lo10,,
2809 or %g1, %lo(ab) + 12, %g1
2810 or %g1, %lo(ab + 12), %g1],
2811 [if test x$gcc_cv_objdump != x \
2812 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2813 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2814 gcc_cv_as_sparc_offsetable_lo10=yes
2816 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2817 [Define if your assembler supports offsetable %lo().])])
2821 i[34567]86-*-* | x86_64-*-*)
2824 cygwin* | pe | mingw32*)
2825 # Used for DWARF 2 in PE
2826 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2827 gcc_cv_as_ix86_pe_secrel32,
2833 [if test x$gcc_cv_ld != x \
2834 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2835 gcc_cv_as_ix86_pe_secrel32=yes
2838 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2839 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2843 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2844 gcc_cv_as_ix86_filds_fists,
2845 [2,9,0],, [filds mem; fists mem],,
2846 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2847 [Define if your assembler uses the new HImode fild and fist notation.])])
2849 gcc_GAS_CHECK_FEATURE([cmov syntax],
2850 gcc_cv_as_ix86_cmov_sun_syntax,,,
2851 [cmovl.l %edx, %eax],,
2852 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2853 [Define if your assembler supports the Sun syntax for cmov.])])
2855 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2856 gcc_cv_as_ix86_ffreep,,,
2858 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2859 [Define if your assembler supports the ffreep mnemonic.])])
2861 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2862 gcc_cv_as_ix86_sahf,,,
2864 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2865 [Define if your assembler supports the sahf mnemonic.])])
2867 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2868 gcc_cv_as_ix86_diff_sect_delta,,,
2876 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2877 [Define if your assembler supports the subtraction of symbols in different sections.])])
2879 # This one is used unconditionally by i386.[ch]; it is to be defined
2880 # to 1 if the feature is present, 0 otherwise.
2881 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2882 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2888 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2889 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2890 [Define true if the assembler supports '.long foo@GOTOFF'.])
2894 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2895 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2897 addl r15 = @ltoffx(x#), gp
2899 ld8.mov r16 = [[r15]], x#],,
2900 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2901 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2907 *-*-aix*) conftest_s=' .machine "pwr5"
2911 gcc_GAS_CHECK_FEATURE([.machine directive support],
2912 gcc_cv_as_machine_directive,,,
2913 [ .machine ppc7400])
2914 if test x$gcc_cv_as_machine_directive != xyes; then
2915 echo "*** This target requires an assembler supporting \".machine\"" >&2
2916 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2917 test x$build = x$target && exit 1
2921 *) conftest_s=' .machine power4
2926 gcc_GAS_CHECK_FEATURE([mfcr field support],
2927 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2929 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2930 [Define if your assembler supports mfcr field.])])
2933 *-*-aix*) conftest_s=' .machine "pwr5"
2936 *) conftest_s=' .machine power5
2941 gcc_GAS_CHECK_FEATURE([popcntb support],
2942 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2944 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2945 [Define if your assembler supports popcntb field.])])
2948 *-*-aix*) conftest_s=' .machine "pwr5x"
2951 *) conftest_s=' .machine power5
2956 gcc_GAS_CHECK_FEATURE([fp round support],
2957 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2959 [AC_DEFINE(HAVE_AS_FPRND, 1,
2960 [Define if your assembler supports fprnd.])])
2963 *-*-aix*) conftest_s=' .machine "pwr6"
2966 *) conftest_s=' .machine power6
2971 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2972 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2974 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2975 [Define if your assembler supports mffgpr and mftgpr.])])
2978 *-*-aix*) conftest_s=' .csect .text[[PR]]
2980 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2984 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2985 *) conftest_s=' .text
2987 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2990 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2991 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2993 [AC_DEFINE(HAVE_AS_REL16, 1,
2994 [Define if your assembler supports R_PPC_REL16 relocs.])])
2997 *-*-aix*) conftest_s=' .machine "pwr6"
3000 *) conftest_s=' .machine power6
3005 gcc_GAS_CHECK_FEATURE([compare bytes support],
3006 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3008 [AC_DEFINE(HAVE_AS_CMPB, 1,
3009 [Define if your assembler supports cmpb.])])
3012 *-*-aix*) conftest_s=' .machine "pwr6"
3015 *) conftest_s=' .machine power6
3020 gcc_GAS_CHECK_FEATURE([decimal float support],
3021 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3023 [AC_DEFINE(HAVE_AS_DFP, 1,
3024 [Define if your assembler supports DFP instructions.])])
3028 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3029 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3030 [ lw $4,%gp_rel(foo)($4)],,
3031 [if test x$target_cpu_default = x
3032 then target_cpu_default=MASK_EXPLICIT_RELOCS
3033 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3035 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3036 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3037 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3038 [Define if the assembler understands -mno-shared.])])
3042 # Mips and HP-UX need the GNU assembler.
3043 # Linux on IA64 might be able to use the Intel assembler.
3046 mips*-*-* | *-*-hpux* )
3047 if test x$gas_flag = xyes \
3048 || test x"$host" != x"$build" \
3049 || test ! -x "$gcc_cv_as" \
3050 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3053 echo "*** This configuration requires the GNU assembler" >&2
3059 # ??? Not all targets support dwarf2 debug_line, even within a version
3060 # of gas. Moreover, we need to emit a valid instruction to trigger any
3061 # info to the output file. So, as supported targets are added to gas 2.11,
3062 # add some instruction here to (also) show we expect this might work.
3063 # ??? Once 2.11 is released, probably need to add first known working
3064 # version to the per-target configury.
3066 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3067 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3068 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3071 ia64*-*-* | s390*-*-*)
3078 if test x"$insn" != x; then
3080 .file 1 \"conftest.s\"
3083 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3084 gcc_cv_as_dwarf2_debug_line,
3085 [elf,2,11,0],, [$conftest_s],
3086 [if test x$gcc_cv_objdump != x \
3087 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3088 | grep debug_line > /dev/null 2>&1; then
3089 gcc_cv_as_dwarf2_debug_line=yes
3092 # The .debug_line file table must be in the exact order that
3093 # we specified the files, since these indices are also used
3094 # by DW_AT_decl_file. Approximate this test by testing if
3095 # the assembler bitches if the same index is assigned twice.
3096 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3097 gcc_cv_as_dwarf2_file_buggy,,,
3101 if test $gcc_cv_as_dwarf2_debug_line = yes \
3102 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3103 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3104 [Define if your assembler supports dwarf2 .file/.loc directives,
3105 and preserves file table indices exactly as given.])
3108 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3109 gcc_cv_as_gdwarf2_flag,
3110 [elf,2,11,0], [--gdwarf2], [$insn],,
3111 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3112 [Define if your assembler supports the --gdwarf2 option.])])
3114 gcc_GAS_CHECK_FEATURE([--gstabs option],
3115 gcc_cv_as_gstabs_flag,
3116 [elf,2,11,0], [--gstabs], [$insn],
3117 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3118 # and warns about it, but still exits successfully. So check for
3120 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3122 else gcc_cv_as_gstabs_flag=yes
3124 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3125 [Define if your assembler supports the --gstabs option.])])
3128 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3129 [gcc_cv_as_line_zero],
3130 [gcc_cv_as_line_zero=no
3131 if test $in_tree_gas = yes; then
3132 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3133 elif test "x$gcc_cv_as" != x; then
3134 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3135 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3136 test "x`cat conftest.out`" = x
3138 gcc_cv_as_line_zero=yes
3140 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3141 cat conftest.s >&AS_MESSAGE_LOG_FD
3142 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3143 cat conftest.out >&AS_MESSAGE_LOG_FD
3145 rm -f conftest.o conftest.s conftest.out
3147 if test "x$gcc_cv_as_line_zero" = xyes; then
3148 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3149 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3152 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3153 gcc_cv_ld_ro_rw_mix=unknown
3154 if test $in_tree_ld = yes ; then
3155 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3156 && test $in_tree_ld_is_elf = yes; then
3157 gcc_cv_ld_ro_rw_mix=read-write
3159 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3160 echo '.section myfoosect, "a"' > conftest1.s
3161 echo '.section myfoosect, "aw"' > conftest2.s
3162 echo '.byte 1' >> conftest2.s
3163 echo '.section myfoosect, "a"' > conftest3.s
3164 echo '.byte 0' >> conftest3.s
3165 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3166 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3167 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3168 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3169 conftest2.o conftest3.o > /dev/null 2>&1; then
3170 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3171 | sed -e '/myfoosect/!d' -e N`
3172 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3173 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3174 gcc_cv_ld_ro_rw_mix=read-only
3176 gcc_cv_ld_ro_rw_mix=read-write
3181 rm -f conftest.* conftest[123].*
3184 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3185 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3186 [Define if your linker links a mix of read-only
3187 and read-write sections into a read-write section.])
3189 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3191 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3192 gcc_cv_ld_eh_frame_hdr=no
3193 if test $in_tree_ld = yes ; then
3194 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3195 && test $in_tree_ld_is_elf = yes; then
3196 gcc_cv_ld_eh_frame_hdr=yes
3198 elif test x$gcc_cv_ld != x; then
3199 # Check if linker supports --eh-frame-hdr option
3200 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3201 gcc_cv_ld_eh_frame_hdr=yes
3204 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3205 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3206 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3207 [Define if your linker supports --eh-frame-hdr option.])
3209 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3211 AC_MSG_CHECKING(linker position independent executable support)
3213 if test $in_tree_ld = yes ; then
3214 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3215 && test $in_tree_ld_is_elf = yes; then
3218 elif test x$gcc_cv_ld != x; then
3219 # Check if linker supports -pie option
3220 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3224 if test x"$gcc_cv_ld_pie" = xyes; then
3225 AC_DEFINE(HAVE_LD_PIE, 1,
3226 [Define if your linker supports -pie option.])
3228 AC_MSG_RESULT($gcc_cv_ld_pie)
3230 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3231 gcc_cv_ld_eh_gc_sections=no
3232 if test $in_tree_ld = yes ; then
3233 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3234 && test $in_tree_ld_is_elf = yes; then
3235 gcc_cv_ld_eh_gc_sections=yes
3237 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3238 cat > conftest.s <<EOF
3241 .type _start, @function
3244 .size _start, .-_start
3245 .section .text.foo,"ax",@progbits
3246 .type foo, @function
3250 .section .gcc_except_table.foo,"a",@progbits
3253 .section .eh_frame,"a",@progbits
3256 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3257 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3258 | grep "gc-sections option ignored" > /dev/null; then
3259 gcc_cv_ld_eh_gc_sections=no
3260 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3261 gcc_cv_ld_eh_gc_sections=yes
3262 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3263 if test x$gcc_cv_as_comdat_group != xyes; then
3264 gcc_cv_ld_eh_gc_sections=no
3265 cat > conftest.s <<EOF
3268 .type _start, @function
3271 .size _start, .-_start
3272 .section .gnu.linkonce.t.foo,"ax",@progbits
3273 .type foo, @function
3277 .section .gcc_except_table.foo,"a",@progbits
3280 .section .eh_frame,"a",@progbits
3283 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3284 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3285 | grep "gc-sections option ignored" > /dev/null; then
3286 gcc_cv_ld_eh_gc_sections=no
3287 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3288 gcc_cv_ld_eh_gc_sections=yes
3294 rm -f conftest.s conftest.o conftest
3298 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3299 gcc_cv_ld_eh_gc_sections=no
3302 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3303 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3304 [Define if your linker supports garbage collection of
3305 sections in presence of EH frames.])
3307 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3313 AC_CACHE_CHECK(linker --as-needed support,
3314 gcc_cv_ld_as_needed,
3315 [gcc_cv_ld_as_needed=no
3316 if test $in_tree_ld = yes ; then
3317 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3318 && test $in_tree_ld_is_elf = yes; then
3319 gcc_cv_ld_as_needed=yes
3321 elif test x$gcc_cv_ld != x; then
3322 # Check if linker supports --as-needed and --no-as-needed options
3323 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3324 gcc_cv_ld_as_needed=yes
3328 if test x"$gcc_cv_ld_as_needed" = xyes; then
3329 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3330 [Define if your linker supports --as-needed and --no-as-needed options.])
3333 case "$target:$tm_file" in
3334 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3335 AC_CACHE_CHECK(linker support for omitting dot symbols,
3336 gcc_cv_ld_no_dot_syms,
3337 [gcc_cv_ld_no_dot_syms=no
3338 if test $in_tree_ld = yes ; then
3339 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3340 gcc_cv_ld_no_dot_syms=yes
3342 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3343 cat > conftest1.s <<EOF
3347 cat > conftest2.s <<EOF
3348 .section ".opd","aw"
3353 .quad .LEfoo,.TOC.@tocbase,0
3359 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3360 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3361 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3362 gcc_cv_ld_no_dot_syms=yes
3364 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3367 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3368 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3369 [Define if your PowerPC64 linker only needs function descriptor syms.])
3374 AC_CACHE_CHECK(linker --sysroot support,
3376 [gcc_cv_ld_sysroot=no
3377 if test $in_tree_ld = yes ; then
3378 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3379 gcc_cv_ld_sysroot=yes
3381 elif test x$gcc_cv_ld != x; then
3382 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3383 gcc_cv_ld_sysroot=yes
3386 if test x"$gcc_cv_ld_sysroot" = xyes; then
3387 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3388 [Define if your linker supports --sysroot.])
3391 if test x$with_sysroot = x && test x$host = x$target \
3392 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3393 && test "$prefix" != "NONE"; then
3394 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3395 [Define to PREFIX/include if cpp should also search that directory.])
3398 # Test for stack protector support in target C library.
3399 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3400 gcc_cv_libc_provides_ssp,
3401 [gcc_cv_libc_provides_ssp=no
3404 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3405 if test "x$with_sysroot" = x; then
3406 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3407 elif test "x$with_build_sysroot" != "x"; then
3408 glibc_header_dir="${with_build_sysroot}/usr/include"
3409 elif test "x$with_sysroot" = xyes; then
3410 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3412 glibc_header_dir="${with_sysroot}/usr/include"
3415 glibc_header_dir=/usr/include
3417 # glibc 2.4 and later provides __stack_chk_fail and
3418 # either __stack_chk_guard, or TLS access to stack guard canary.
3419 if test -f $glibc_header_dir/features.h \
3420 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3421 $glibc_header_dir/features.h > /dev/null; then
3422 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3423 $glibc_header_dir/features.h > /dev/null; then
3424 gcc_cv_libc_provides_ssp=yes
3425 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3426 $glibc_header_dir/features.h > /dev/null \
3427 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3428 $glibc_header_dir/features.h > /dev/null; then
3429 gcc_cv_libc_provides_ssp=yes
3434 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3435 [echo "no __stack_chk_fail on this target"])
3437 *) gcc_cv_libc_provides_ssp=no ;;
3440 if test x$gcc_cv_libc_provides_ssp = xyes; then
3441 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3442 [Define if your target C library provides stack protector support])
3445 # Check if TFmode long double should be used by default or not.
3446 # Some glibc targets used DFmode long double, but with glibc 2.4
3447 # and later they can use TFmode.
3449 powerpc*-*-linux* | \
3454 AC_ARG_WITH(long-double-128,
3455 [ --with-long-double-128 Use 128-bit long double by default.],
3456 gcc_cv_target_ldbl128="$with_long_double_128",
3457 [gcc_cv_target_ldbl128=no
3458 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3459 if test "x$with_sysroot" = x; then
3460 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3461 elif test "x$with_build_sysroot" != "x"; then
3462 glibc_header_dir="${with_build_sysroot}/usr/include"
3463 elif test "x$with_sysroot" = xyes; then
3464 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3466 glibc_header_dir="${with_sysroot}/usr/include"
3469 glibc_header_dir=/usr/include
3472 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3473 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3474 && gcc_cv_target_ldbl128=yes
3479 if test x$gcc_cv_target_ldbl128 = xyes; then
3480 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3481 [Define if TFmode long double should be the default])
3484 # Find out what GC implementation we want, or may, use.
3486 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3494 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3497 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3502 echo "Using $GGC for garbage collection."
3504 # Use the system's zlib library.
3506 zlibinc="-I\$(srcdir)/../zlib"
3507 AC_ARG_WITH(system-zlib,
3508 [ --with-system-zlib use installed libz],
3515 dnl Very limited version of automake's enable-maintainer-mode
3517 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3518 dnl maintainer-mode is disabled by default
3519 AC_ARG_ENABLE(maintainer-mode,
3520 [ --enable-maintainer-mode
3521 enable make rules and dependencies not useful
3522 (and sometimes confusing) to the casual installer],
3523 maintainer_mode=$enableval,
3526 AC_MSG_RESULT($maintainer_mode)
3528 if test "$maintainer_mode" = "yes"; then
3539 # Make empty files to contain the specs and options for each language.
3540 # Then add #include lines to for a compiler that has specs and/or options.
3546 # These (without "all_") are set in each config-lang.in.
3547 # `language' must be a single word so is spelled singularly.
3550 all_outputs='Makefile gccbug libada-mk'
3551 # List of language makefile fragments.
3553 # List of language subdirectory makefiles. Deprecated.
3555 # Additional files for gengtype
3556 all_gtfiles="$target_gtfiles"
3558 # These are the languages that are set in --enable-languages,
3559 # and are available in the GCC tree.
3560 all_selected_languages=
3562 # Add the language fragments.
3563 # Languages are added via two mechanisms. Some information must be
3564 # recorded in makefile variables, these are defined in config-lang.in.
3565 # We accumulate them and plug them into the main Makefile.
3566 # The other mechanism is a set of hooks for each of the main targets
3567 # like `clean', `install', etc.
3569 language_hooks="Make-hooks"
3571 for lang in ${srcdir}/*/config-lang.in
3574 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3576 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3577 if test "x$lang_alias" = x
3579 echo "$lang doesn't set \$language." 1>&2
3582 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3583 subdirs="$subdirs $subdir"
3584 case ",$enable_languages," in
3586 all_selected_languages="$all_selected_languages $lang_alias"
3587 if test -f $srcdir/$subdir/lang-specs.h; then
3588 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3600 . ${srcdir}/$subdir/config-lang.in
3601 if test "x$language" = x
3603 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3608 case ",$enable_languages," in
3611 for i in $subdir_requires; do
3612 test -f "${srcdir}/$i/config-lang.in" && continue
3620 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3621 if test -f $srcdir/$subdir/lang.opt; then
3622 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3624 if test -f $srcdir/$subdir/$subdir-tree.def; then
3625 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3627 if test -f ${srcdir}/$subdir/Makefile.in
3628 then all_lang_makefiles="$subdir/Makefile"
3630 all_languages="$all_languages $language"
3631 all_compilers="$all_compilers $compilers"
3632 all_outputs="$all_outputs $outputs"
3633 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3636 # Pick up gtfiles for c
3638 . ${srcdir}/c-config-lang.in
3639 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3642 for language in $all_selected_languages
3644 check_languages="$check_languages check-$language"
3647 # We link each language in with a set of hooks, reached indirectly via
3648 # lang.${target}. Only do so for selected languages.
3652 target_list="all.cross start.encap rest.encap tags \
3653 install-common install-man install-info install-pdf dvi pdf \
3654 html uninstall info man srcextra srcman srcinfo \
3655 mostlyclean clean distclean maintainer-clean"
3657 for t in $target_list
3660 for lang in $all_selected_languages
3664 echo "lang.$t: $x" >> Make-hooks
3673 echo "dir ." > .gdbinit
3674 echo "dir ${srcdir}" >> .gdbinit
3675 if test x$gdb_needs_out_file_path = xyes
3677 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3679 if test "x$subdirs" != x; then
3682 echo "dir ${srcdir}/$s" >> .gdbinit
3685 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3687 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3688 # absolute path for gcc_tooldir based on inserting the number of up-directory
3689 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3690 # $(libsubdir)/@(unlibsubdir) based path.
3691 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3692 # make and thus we'd get different behavior depending on where we built the
3694 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3695 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3697 changequote(<<, >>)dnl
3698 # An explanation of the sed strings:
3699 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3700 # -e 's|/$||' match a trailing forward slash and eliminates it
3701 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3702 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3704 # (*) Note this pattern overwrites the first character of the string
3705 # with a forward slash if one is not already present. This is not a
3706 # problem because the exact names of the sub-directories concerned is
3707 # unimportant, just the number of them matters.
3709 # The practical upshot of these patterns is like this:
3711 # prefix exec_prefix result
3712 # ------ ----------- ------
3714 # /foo/ /foo/bar ../
3715 # /foo /foo/bar/ ../
3716 # /foo/ /foo/bar/ ../
3717 # /foo /foo/bar/ugg ../../
3720 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3721 changequote([, ])dnl
3723 AC_SUBST(gcc_tooldir)
3726 # Find a directory in which to install a shared libgcc.
3728 AC_ARG_ENABLE(version-specific-runtime-libs,
3729 [ --enable-version-specific-runtime-libs
3730 specify that runtime libraries should be
3731 installed in a compiler-specific directory])
3733 AC_ARG_WITH(slibdir,
3734 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3735 slibdir="$with_slibdir",
3736 if test "${enable_version_specific_runtime_libs+set}" = set; then
3737 slibdir='$(libsubdir)'
3738 elif test "$host" != "$target"; then
3739 slibdir='$(build_tooldir)/lib'
3745 objdir=`${PWDCMD-pwd}`
3748 AC_ARG_WITH(datarootdir,
3749 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3750 datarootdir="\${prefix}/$with_datarootdir",
3751 datarootdir='$(prefix)/share')
3752 AC_SUBST(datarootdir)
3755 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3756 docdir="\${prefix}/$with_docdir",
3757 docdir='$(datarootdir)')
3760 AC_ARG_WITH(htmldir,
3761 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3762 htmldir="\${prefix}/$with_htmldir",
3763 htmldir='$(docdir)')
3766 # Substitute configuration variables
3769 AC_SUBST(all_compilers)
3770 AC_SUBST(all_gtfiles)
3771 AC_SUBST(all_lang_makefrags)
3772 AC_SUBST(all_lang_makefiles)
3773 AC_SUBST(all_languages)
3774 AC_SUBST(all_selected_languages)
3775 AC_SUBST(build_exeext)
3776 AC_SUBST(build_install_headers_dir)
3777 AC_SUBST(build_xm_file_list)
3778 AC_SUBST(build_xm_include_list)
3779 AC_SUBST(build_xm_defines)
3780 AC_SUBST(check_languages)
3781 AC_SUBST(cpp_install_dir)
3782 AC_SUBST(xmake_file)
3783 AC_SUBST(tmake_file)
3784 AC_SUBST(extra_gcc_objs)
3785 AC_SUBST(extra_headers_list)
3786 AC_SUBST(extra_objs)
3787 AC_SUBST(extra_parts)
3788 AC_SUBST(extra_passes)
3789 AC_SUBST(extra_programs)
3790 AC_SUBST(float_h_file)
3791 AC_SUBST(gcc_config_arguments)
3792 AC_SUBST(gcc_gxx_include_dir)
3793 AC_SUBST(host_exeext)
3794 AC_SUBST(host_xm_file_list)
3795 AC_SUBST(host_xm_include_list)
3796 AC_SUBST(host_xm_defines)
3797 AC_SUBST(out_host_hook_obj)
3799 AC_SUBST(lang_opt_files)
3800 AC_SUBST(lang_specs_files)
3801 AC_SUBST(lang_tree_files)
3802 AC_SUBST(local_prefix)
3804 AC_SUBST(objc_boehm_gc)
3806 AC_SUBST(out_object_file)
3807 AC_SUBST(thread_file)
3808 AC_SUBST(tm_file_list)
3809 AC_SUBST(tm_include_list)
3810 AC_SUBST(tm_defines)
3811 AC_SUBST(tm_p_file_list)
3812 AC_SUBST(tm_p_include_list)
3813 AC_SUBST(xm_file_list)
3814 AC_SUBST(xm_include_list)
3815 AC_SUBST(xm_defines)
3816 AC_SUBST(c_target_objs)
3817 AC_SUBST(cxx_target_objs)
3818 AC_SUBST(target_cpu_default)
3820 AC_SUBST_FILE(language_hooks)
3823 if test x${build} = x${host} ; then
3824 if test x${host} = x${target} ; then
3825 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3827 echo "Links are now set up to build a cross-compiler" 1>&2
3828 echo " from ${host} to ${target}." 1>&2
3831 if test x${host} = x${target} ; then
3832 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3833 echo " for ${target}." 1>&2
3835 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3836 echo " from ${host} to ${target}." 1>&2
3840 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3841 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3843 # Configure the subdirectories
3844 # AC_CONFIG_SUBDIRS($subdirs)
3846 # Create the Makefile
3847 # and configure language subdirectories
3848 AC_CONFIG_FILES($all_outputs)
3850 AC_CONFIG_COMMANDS([default],
3852 case ${CONFIG_HEADERS} in
3853 *auto-host.h:config.in*)
3856 # Make sure all the subdirs exist.
3857 for d in $subdirs doc build
3859 test -d $d || mkdir $d
3862 [subdirs='$subdirs'])