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 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 AC_MSG_CHECKING([whether a default assembler was specified])
250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
251 if test x"$gas_flag" = x"no"; then
252 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
254 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
264 # If a non-executable a.out is present (e.g. created by GNU as above even if
265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
266 # file, even when creating an executable, so an execution test fails.
267 # Remove possible default executable files to avoid this.
269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
270 # Autoconf includes it.
271 rm -f a.out a.exe b.out
273 # Find the native compiler
276 # autoconf is lame and doesn't give us any substitution variable for this.
277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
278 NO_MINUS_C_MINUS_O=yes
280 OUTPUT_OPTION='-o $@'
282 AC_SUBST(NO_MINUS_C_MINUS_O)
283 AC_SUBST(OUTPUT_OPTION)
285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
286 # optimizations to be activated explicitly by the toplevel.
289 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
293 # -------------------------
294 # Check C compiler features
295 # -------------------------
300 # sizeof(char) is 1 by definition.
301 AC_CHECK_SIZEOF(void *)
302 AC_CHECK_SIZEOF(short)
304 AC_CHECK_SIZEOF(long)
305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
308 # ---------------------
309 # Warnings and checking
310 # ---------------------
312 # Check $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
320 [whether ${CC} accepts -Wno-long-long],
321 [ac_cv_prog_cc_w_no_long_long],
322 [save_CFLAGS="$CFLAGS"
323 CFLAGS="-Wno-long-long"
324 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
325 [ac_cv_prog_cc_w_no_long_long=yes],
326 [ac_cv_prog_cc_w_no_long_long=no])
327 CFLAGS="$save_CFLAGS"
331 [whether ${CC} accepts -Wno-variadic-macros],
332 [ac_cv_prog_cc_w_no_variadic_macros],
333 [save_CFLAGS="$CFLAGS"
334 CFLAGS="-Wno-variadic-macros"
335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
336 [ac_cv_prog_cc_w_no_variadic_macros=yes],
337 [ac_cv_prog_cc_w_no_variadic_macros=no])
338 CFLAGS="$save_CFLAGS"
342 [whether ${CC} accepts -Wno-overlength-strings],
343 [ac_cv_prog_cc_w_no_overlength_strings],
344 [save_CFLAGS="$CFLAGS"
345 CFLAGS="-Wno-overlength-strings"
346 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
347 [ac_cv_prog_cc_w_no_overlength_strings=yes],
348 [ac_cv_prog_cc_w_no_overlength_strings=no])
349 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_no_long_long = yes \
354 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
355 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
356 strict_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
359 # Add -Wold-style-definition if it's accepted
361 [whether ${CC} accepts -Wold-style-definition],
362 [ac_cv_prog_cc_w_old_style_definition],
363 [save_CFLAGS="$CFLAGS"
364 CFLAGS="-Wold-style-definition"
365 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
366 [ac_cv_prog_cc_w_old_style_definition=yes],
367 [ac_cv_prog_cc_w_old_style_definition=no])
368 CFLAGS="$save_CFLAGS"
370 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
371 strict_warn="${strict_warn} -Wold-style-definition"
374 # Add -Wmissing-format-attribute if it's accepted
376 [whether ${CC} accepts -Wmissing-format-attribute],
377 [ac_cv_prog_cc_w_missing_format_attribute],
378 [save_CFLAGS="$CFLAGS"
379 CFLAGS="-Wmissing-format-attribute"
380 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
381 [ac_cv_prog_cc_w_missing_format_attribute=yes],
382 [ac_cv_prog_cc_w_missing_format_attribute=no])
383 CFLAGS="$save_CFLAGS"
385 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
386 strict_warn="${strict_warn} -Wmissing-format-attribute"
389 # Enable -Werror, period.
390 AC_ARG_ENABLE(werror_always,
391 [ --enable-werror-always enable -Werror always], [],
392 [enable_werror_always=no])
393 if test x${enable_werror_always} = xyes ; then
394 strict_warn="${strict_warn} -Werror"
396 AC_SUBST(strict_warn)
398 # Get C++ compatibility warning flag, if supported.
400 [whether ${CC} accepts -Wc++-compat],
401 [ac_cv_prog_cc_w_cxx_compat],
402 [save_CFLAGS="$CFLAGS"
403 CFLAGS="-Wc++-compat"
404 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
405 [ac_cv_prog_cc_w_cxx_compat=yes],
406 [ac_cv_prog_cc_w_cxx_compat=no])
407 CFLAGS="$save_CFLAGS"
409 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
410 cxx_compat_warn="-Wc++-compat"
412 AC_SUBST(cxx_compat_warn)
415 # If the native compiler is GCC, we can enable warnings even in stage1.
416 # That's useful for people building cross-compilers, or just running a
419 if test "x$GCC" = "xyes"; then
420 warn_cflags='$(GCC_WARN_CFLAGS)'
422 AC_SUBST(warn_cflags)
424 # Enable expensive internal checks
426 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
430 AC_ARG_ENABLE(checking,
431 [ --enable-checking[=LIST]
432 enable expensive run-time checks. With LIST,
433 enable only specific categories of checks.
434 Categories are: yes,no,all,none,release.
435 Flags are: assert,fold,gc,gcac,misc,
436 rtlflag,rtl,runtime,tree,valgrind.],
437 [ac_checking_flags="${enableval}"],[
438 # Determine the default checks.
439 if test x$is_release = x ; then
440 ac_checking_flags=yes
442 ac_checking_flags=release
448 ac_gc_always_collect=
451 ac_runtime_checking=1
453 ac_valgrind_checking=
454 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
455 for check in $ac_checking_flags
458 # these set all the flags to specific states
459 yes) ac_assert_checking=1 ; ac_checking=1 ;
460 ac_fold_checking= ; ac_gc_checking=1 ;
461 ac_gc_always_collect= ; ac_rtl_checking= ;
462 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
463 ac_tree_checking=1 ; ac_valgrind_checking= ;;
464 no|none) ac_assert_checking= ; ac_checking= ;
465 ac_fold_checking= ; ac_gc_checking= ;
466 ac_gc_always_collect= ; ac_rtl_checking= ;
467 ac_rtlflag_checking= ; ac_runtime_checking= ;
468 ac_tree_checking= ; ac_valgrind_checking= ;;
469 all) ac_assert_checking=1 ; ac_checking=1 ;
470 ac_fold_checking=1 ; ac_gc_checking=1 ;
471 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
472 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
473 ac_tree_checking=1 ; ac_valgrind_checking= ;;
474 release) ac_assert_checking=1 ; ac_checking= ;
475 ac_fold_checking= ; ac_gc_checking= ;
476 ac_gc_always_collect= ; ac_rtl_checking= ;
477 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
478 ac_tree_checking= ; ac_valgrind_checking= ;;
479 # these enable particular checks
480 assert) ac_assert_checking=1 ;;
481 fold) ac_fold_checking=1 ;;
482 gc) ac_gc_checking=1 ;;
483 gcac) ac_gc_always_collect=1 ;;
484 misc) ac_checking=1 ;;
485 rtl) ac_rtl_checking=1 ;;
486 rtlflag) ac_rtlflag_checking=1 ;;
487 runtime) ac_runtime_checking=1 ;;
488 tree) ac_tree_checking=1 ;;
489 valgrind) ac_valgrind_checking=1 ;;
490 *) AC_MSG_ERROR(unknown check category $check) ;;
496 if test x$ac_checking != x ; then
497 AC_DEFINE(ENABLE_CHECKING, 1,
498 [Define if you want more run-time sanity checks. This one gets a grab
499 bag of miscellaneous but relatively cheap checks.])
500 nocommon_flag=-fno-common
502 AC_SUBST(nocommon_flag)
503 if test x$ac_assert_checking != x ; then
504 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
505 [Define if you want assertions enabled. This is a cheap check.])
507 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
508 if test x$ac_runtime_checking != x ; then
509 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
510 [Define if you want runtime assertions enabled. This is a cheap check.])
512 if test x$ac_tree_checking != x ; then
513 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
514 [Define if you want all operations on trees (the basic data
515 structure of the front ends) to be checked for dynamic type safety
516 at runtime. This is moderately expensive. The tree browser debugging
517 routines will also be enabled by this option.
519 TREEBROWSER=tree-browser.o
521 AC_SUBST(TREEBROWSER)
522 if test x$ac_rtl_checking != x ; then
523 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
524 [Define if you want all operations on RTL (the basic data structure
525 of the optimizer and back end) to be checked for dynamic type safety
526 at runtime. This is quite expensive.])
528 if test x$ac_rtlflag_checking != x ; then
529 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
530 [Define if you want RTL flag accesses to be checked against the RTL
531 codes that are supported for each access macro. This is relatively
534 if test x$ac_gc_checking != x ; then
535 AC_DEFINE(ENABLE_GC_CHECKING, 1,
536 [Define if you want the garbage collector to do object poisoning and
537 other memory allocation checks. This is quite expensive.])
539 if test x$ac_gc_always_collect != x ; then
540 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
541 [Define if you want the garbage collector to operate in maximally
542 paranoid mode, validating the entire heap and collecting garbage at
543 every opportunity. This is extremely expensive.])
545 if test x$ac_fold_checking != x ; then
546 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
547 [Define if you want fold checked that it never destructs its argument.
548 This is quite expensive.])
550 valgrind_path_defines=
553 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
554 dnl # an if statement. This was the source of very frustrating bugs
555 dnl # in converting to autoconf 2.5x!
556 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
558 if test x$ac_valgrind_checking != x ; then
559 # It is certainly possible that there's valgrind but no valgrind.h.
560 # GCC relies on making annotations so we must have both.
561 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
562 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
563 [[#include <valgrind/memcheck.h>
564 #ifndef VALGRIND_DISCARD
565 #error VALGRIND_DISCARD not defined
567 [gcc_cv_header_valgrind_memcheck_h=yes],
568 [gcc_cv_header_valgrind_memcheck_h=no])
569 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
570 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
571 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
572 [[#include <memcheck.h>
573 #ifndef VALGRIND_DISCARD
574 #error VALGRIND_DISCARD not defined
576 [gcc_cv_header_memcheck_h=yes],
577 [gcc_cv_header_memcheck_h=no])
578 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
579 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
580 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
581 if test "x$valgrind_path" = "x" \
582 || (test $have_valgrind_h = no \
583 && test $gcc_cv_header_memcheck_h = no \
584 && test $gcc_cv_header_valgrind_memcheck_h = no); then
585 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
587 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
588 valgrind_command="$valgrind_path -q"
589 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
590 [Define if you want to run subprograms and generated programs
591 through valgrind (a memory checker). This is extremely expensive.])
592 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
593 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
594 [Define if valgrind's valgrind/memcheck.h header is installed.])
596 if test $gcc_cv_header_memcheck_h = yes; then
597 AC_DEFINE(HAVE_MEMCHECK_H, 1,
598 [Define if valgrind's memcheck.h header is installed.])
601 AC_SUBST(valgrind_path_defines)
602 AC_SUBST(valgrind_command)
604 AC_ARG_ENABLE(mapped-location,
605 [ --enable-mapped-location location_t is fileline integer cookie],,
606 enable_mapped_location=no)
608 if test "$enable_mapped_location" = yes ; then
609 AC_DEFINE(USE_MAPPED_LOCATION, 1,
610 [Define if location_t is fileline integer cookie.])
613 # Enable code coverage collection
614 AC_ARG_ENABLE(coverage,
615 [ --enable-coverage[=LEVEL]
616 enable compiler's code coverage collection.
617 Use to measure compiler performance and locate
618 unused parts of the compiler. With LEVEL, specify
619 optimization. Values are opt, noopt,
621 [case "${enableval}" in
623 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
626 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
629 # a.k.a. --disable-coverage
633 AC_MSG_ERROR(unknown coverage setting $enableval)
637 AC_SUBST(coverage_flags)
639 AC_ARG_ENABLE(gather-detailed-mem-stats,
640 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
641 [enable_gather_detailed_mem_stats=no])
642 if test x$enable_gather_detailed_mem_stats = xyes ; then
643 AC_DEFINE(GATHER_STATISTICS, 1,
644 [Define to enable detailed memory allocation stats gathering.])
647 # -------------------------------
648 # Miscenalleous configure options
649 # -------------------------------
653 [ --with-stabs arrange to use stabs instead of host debug format],
657 # Determine whether or not multilibs are enabled.
658 AC_ARG_ENABLE(multilib,
659 [ --enable-multilib enable library support for multiple ABIs],
660 [], [enable_multilib=yes])
661 AC_SUBST(enable_multilib)
663 # Enable __cxa_atexit for C++.
664 AC_ARG_ENABLE(__cxa_atexit,
665 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
668 # Enable C extension for decimal float if target supports it.
669 AC_ARG_ENABLE(decimal-float,
670 [ --enable-decimal-float={no,yes,bid,dpd}
671 enable decimal float extension to C. Selecting 'bid'
672 or 'dpd' choses which decimal floating point format
675 case $enable_decimal_float in
676 yes | no | bid | dpd) ;;
677 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
678 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
683 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
684 enable_decimal_float=yes
687 AC_MSG_WARN(decimal float is not supported for this target, ignored)
688 enable_decimal_float=no
693 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
694 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
695 [Define to 1 to enable decimal float extension to C.])
697 # x86's use BID format instead of DPD
698 case x$enable_decimal_float in
701 i?86*-*-linux* | x86_64*-*-linux*)
702 enable_decimal_float=bid
705 enable_decimal_float=dpd
710 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
711 # dependency on libdecnumber.
712 enable_decimal_float=dpd
715 AC_SUBST(enable_decimal_float)
717 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
718 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
719 [Define to 1 to specify that we are using the BID decimal floating
720 point format instead of DPD])
723 # Pass with no value to take the default
724 # Pass with a value to specify a thread package
725 AC_ARG_ENABLE(threads,
726 [ --enable-threads enable thread usage for target GCC
727 --enable-threads=LIB use LIB thread package for target GCC],,
731 [ --enable-tls enable or disable generation of tls code
732 overriding the assembler check for tls support],
736 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
737 Valid choices are 'yes' and 'no'.]) ;;
741 AC_ARG_ENABLE(objc-gc,
742 [ --enable-objc-gc enable the use of Boehm's garbage collector with
743 the GNU Objective-C runtime],
744 if test x$enable_objc_gc = xno; then
752 [ --with-dwarf2 force the default debug format to be DWARF 2],
753 dwarf2="$with_dwarf2",
756 AC_ARG_ENABLE(shared,
757 [ --disable-shared don't provide a shared libgcc],
759 case $enable_shared in
763 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
764 for pkg in $enableval; do
765 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
772 ], [enable_shared=yes])
773 AC_SUBST(enable_shared)
775 AC_ARG_WITH(build-sysroot,
776 [ --with-build-sysroot=sysroot
777 use sysroot as the system root during the build])
780 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
782 case ${with_sysroot} in
783 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
784 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
787 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
788 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
790 if test "x$exec_prefix" = xNONE; then
791 if test "x$prefix" = xNONE; then
792 test_prefix=/usr/local
797 test_prefix=$exec_prefix
799 case ${TARGET_SYSTEM_ROOT} in
800 "${test_prefix}"|"${test_prefix}/"*|\
801 '${exec_prefix}'|'${exec_prefix}/'*)
802 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
803 TARGET_SYSTEM_ROOT_DEFINE="$t"
808 TARGET_SYSTEM_ROOT_DEFINE=
809 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
811 AC_SUBST(TARGET_SYSTEM_ROOT)
812 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
813 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
815 # Build with intermodule optimisations
816 AC_ARG_ENABLE(intermodule,
817 [ --enable-intermodule build the compiler in one step],
818 [case ${enable_intermodule} in
819 yes) onestep="-onestep";;
825 # Sanity check enable_languages in case someone does not run the toplevel
826 # configure # script.
827 AC_ARG_ENABLE(languages,
828 [ --enable-languages=LIST specify which front-ends to build],
829 [case ,${enable_languages}, in
831 # go safe -- we cannot be much sure without the toplevel
833 # analysis of which target libs are present and usable
837 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
842 enable_languages=c,${enable_languages}
845 [enable_languages=c])
847 # Used by documentation targets
848 AC_SUBST(datarootdir)
852 # -------------------------
853 # Checks for other programs
854 # -------------------------
858 # Find some useful tools
860 # We need awk to create options.c and options.h.
861 # Bail out if it's missing.
863 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
871 # By default, the Darwin ranlib will not treat common symbols as
872 # definitions when building the archive table of contents. Other
873 # ranlibs do that; pass an option to the Darwin ranlib that makes
874 # it behave similarly.
880 AC_SUBST(ranlib_flags)
884 # See if cmp has --ignore-initial.
885 gcc_AC_PROG_CMP_IGNORE_INITIAL
887 # See if we have the mktemp command.
888 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
890 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
892 # See if makeinfo has been installed and is modern enough
893 # that we can use it.
894 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
895 [GNU texinfo.* \([0-9][0-9.]*\)],
897 if test $gcc_cv_prog_makeinfo_modern = no; then
898 MAKEINFO="$MISSING makeinfo"
900 *** Makeinfo is missing or too old.
901 *** Info documentation will not be built.])
908 # Is pod2man recent enough to regenerate manpages?
909 AC_MSG_CHECKING([for recent Pod::Man])
910 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
912 GENERATED_MANPAGES=generated-manpages
917 AC_SUBST(GENERATED_MANPAGES)
920 dnl Don't use AC_PROG_LEX; we insist on flex.
921 dnl LEXLIB is not useful in gcc.
922 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
925 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
927 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
928 # check for build == host before using them.
931 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
932 && test -d ../binutils ; then
933 NM='$(objdir)/../binutils/nm-new'
935 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
939 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
940 && test -d ../binutils ; then
941 AR='$(objdir)/../binutils/ar'
943 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
947 # --------------------
948 # Checks for C headers
949 # --------------------
951 AC_MSG_CHECKING(for GNU C library)
952 AC_CACHE_VAL(gcc_cv_glibc,
953 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
954 [[#include <features.h>]], [[
955 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
956 #error Not a GNU C library system
960 AC_MSG_RESULT($gcc_cv_glibc)
961 if test $gcc_cv_glibc = yes; then
962 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
965 # Need to reject headers which give warnings, so that the -Werror bootstrap
966 # works later. *sigh* This needs to come before all header checks.
973 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
974 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
975 sys/resource.h sys/param.h sys/times.h sys/stat.h \
976 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
978 # Check for thread headers.
979 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
980 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
982 # These tests can't be done till we know if we have limits.h.
991 # These libraries may be used by collect2.
992 # We may need a special search path to get them linked.
993 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
995 for libs in '' -lld -lmld \
996 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
997 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1000 AC_TRY_LINK_FUNC(ldopen,
1001 [gcc_cv_collect2_libs="$libs"; break])
1004 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1005 case $gcc_cv_collect2_libs in
1007 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1009 AC_SUBST(COLLECT2_LIBS)
1011 # When building Ada code on Alpha, we need exc_resume which is usually in
1012 # -lexc. So test for it.
1015 AC_SEARCH_LIBS(exc_resume, exc)
1018 AC_SUBST(GNAT_LIBEXC)
1020 # Some systems put ldexp and frexp in libm instead of libc; assume
1021 # they're both in the same place. jcf-dump needs them.
1024 AC_SEARCH_LIBS(ldexp, m)
1029 # Use <inttypes.h> only if it exists,
1030 # doesn't clash with <sys/types.h>, and declares intmax_t.
1031 AC_MSG_CHECKING(for inttypes.h)
1032 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1033 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1034 [[#include <sys/types.h>
1035 #include <inttypes.h>]],
1036 [[intmax_t i = -1;]])],
1037 [gcc_cv_header_inttypes_h=yes],
1038 [gcc_cv_header_inttypes_h=no])])
1039 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1040 if test $gcc_cv_header_inttypes_h = yes; then
1041 AC_DEFINE(HAVE_INTTYPES_H, 1,
1042 [Define if you have a working <inttypes.h> header file.])
1045 dnl Disabled until we have a complete test for buggy enum bitfields.
1046 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1048 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1049 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1050 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1051 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1052 putchar_unlocked putc_unlocked)
1053 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1054 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1055 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1058 if test x$ac_cv_func_mbstowcs = xyes; then
1059 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1060 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1066 [gcc_cv_func_mbstowcs_works=yes],
1067 [gcc_cv_func_mbstowcs_works=no],
1068 [gcc_cv_func_mbstowcs_works=yes])])
1069 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1070 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1071 [Define this macro if mbstowcs does not crash when its
1072 first argument is NULL.])
1076 AC_CHECK_TYPE(ssize_t, int)
1078 # Try to determine the array type of the second argument of getgroups
1079 # for the target system (int or gid_t).
1081 if test "${target}" = "${build}"; then
1082 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1085 # This condition may need some tweaking. It should include all
1086 # targets where the array type of the second argument of getgroups
1087 # is int and the type of gid_t is not equivalent to int.
1088 *-*-sunos* | *-*-ultrix*)
1089 TARGET_GETGROUPS_T=int
1092 TARGET_GETGROUPS_T=gid_t
1096 AC_SUBST(TARGET_GETGROUPS_T)
1098 gcc_AC_FUNC_MMAP_BLACKLIST
1102 # Under VMS, vfork works very differently than on Unix. The standard test
1103 # won't work, and it isn't easily adaptable. It makes more sense to
1105 ac_cv_func_vfork_works=yes
1111 # Until we have in-tree GNU iconv:
1113 AC_SUBST(LIBICONV_DEP)
1119 # We will need to find libiberty.h and ansidecl.h
1120 saved_CFLAGS="$CFLAGS"
1121 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1122 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1123 strsignal strstr strverscmp \
1124 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1125 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1126 #include "ansidecl.h"
1127 #include "system.h"])
1129 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1130 #include "ansidecl.h"
1132 #ifdef HAVE_SYS_RESOURCE_H
1133 #include <sys/resource.h>
1137 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1138 #include "ansidecl.h"
1140 #ifdef HAVE_SYS_RESOURCE_H
1141 #include <sys/resource.h>
1143 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1144 [Define to \`long' if <sys/resource.h> doesn't define.])])
1146 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1147 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1148 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1149 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1150 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1151 #include "ansidecl.h"
1160 gcc_AC_CHECK_DECLS(times, , ,[
1161 #include "ansidecl.h"
1163 #ifdef HAVE_SYS_TIMES_H
1164 #include <sys/times.h>
1168 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1169 #include "ansidecl.h"
1174 # More time-related stuff.
1175 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1176 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1177 #include "ansidecl.h"
1179 #ifdef HAVE_SYS_TIMES_H
1180 #include <sys/times.h>
1182 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1183 if test $ac_cv_struct_tms = yes; then
1184 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1185 [Define if <sys/times.h> defines struct tms.])
1188 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1189 # revisit after autoconf 2.50.
1190 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1191 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1192 #include "ansidecl.h"
1194 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1195 if test $gcc_cv_type_clock_t = yes; then
1196 AC_DEFINE(HAVE_CLOCK_T, 1,
1197 [Define if <time.h> defines clock_t.])
1200 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1201 CFLAGS="$saved_CFLAGS"
1203 gcc_AC_INITFINI_ARRAY
1205 # mkdir takes a single argument on some systems.
1206 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1214 # With Setjmp/Longjmp based exception handling.
1215 AC_ARG_ENABLE(sjlj-exceptions,
1216 [ --enable-sjlj-exceptions
1217 arrange to use setjmp/longjmp exception handling],
1218 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1219 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1220 [Define 0/1 to force the choice for exception handling model.])])
1222 # For platforms with the unwind ABI which includes an unwind library,
1223 # libunwind, we can choose to use the system libunwind.
1224 AC_ARG_WITH(system-libunwind,
1225 [ --with-system-libunwind use installed libunwind])
1227 # config.gcc also contains tests of with_system_libunwind.
1228 if test x$with_system_libunwind = xyes; then
1229 AC_DEFINE(HAVE_GETIPINFO, 1,
1230 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1233 # --------------------------------------------------------
1234 # Build, host, and target specific configuration fragments
1235 # --------------------------------------------------------
1237 # Collect build-machine-specific information.
1238 . ${srcdir}/config.build
1240 # Collect host-machine-specific information.
1241 . ${srcdir}/config.host
1245 # Collect target-machine-specific information.
1246 . ${srcdir}/config.gcc
1248 extra_objs="${host_extra_objs} ${extra_objs}"
1249 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1251 # Default the target-machine variables that were not explicitly set.
1252 if test x"$tm_file" = x
1253 then tm_file=$cpu_type/$cpu_type.h; fi
1255 if test x"$extra_headers" = x
1256 then extra_headers=; fi
1258 if test x$md_file = x
1259 then md_file=$cpu_type/$cpu_type.md; fi
1261 if test x$out_file = x
1262 then out_file=$cpu_type/$cpu_type.c; fi
1264 if test x"$tmake_file" = x
1265 then tmake_file=$cpu_type/t-$cpu_type
1268 if test x"$dwarf2" = xyes
1269 then tm_file="$tm_file tm-dwarf2.h"
1272 # Say what files are being used for the output code and MD file.
1273 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1274 echo "Using \`$srcdir/config/$md_file' as machine description file."
1276 # If any of the xm_file variables contain nonexistent files, warn
1277 # about them and drop them.
1280 for x in $build_xm_file; do
1281 if test -f $srcdir/config/$x
1283 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1289 for x in $host_xm_file; do
1290 if test -f $srcdir/config/$x
1292 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1298 for x in $xm_file; do
1299 if test -f $srcdir/config/$x
1301 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1307 for f in $tm_file; do
1310 if test $count = ax; then
1311 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1313 echo "Using the following target machine macro files:"
1314 for f in $tm_file; do
1315 echo " $srcdir/config/$f"
1319 if test x$need_64bit_hwint = xyes; then
1320 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1321 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1324 if test x$use_long_long_for_widest_fast_int = xyes; then
1325 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1326 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1327 efficiently supported by the host hardware.])
1331 for f in $host_xm_file; do
1334 if test $count = a; then
1336 elif test $count = ax; then
1337 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1339 echo "Using the following host machine macro files:"
1340 for f in $host_xm_file; do
1341 echo " $srcdir/config/$f"
1344 echo "Using ${out_host_hook_obj} for host machine hooks."
1346 if test "$host_xm_file" != "$build_xm_file"; then
1348 for f in $build_xm_file; do
1351 if test $count = a; then
1353 elif test $count = ax; then
1354 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1356 echo "Using the following build machine macro files:"
1357 for f in $build_xm_file; do
1358 echo " $srcdir/config/$f"
1365 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1366 gcc_cv_mcontext_underscores,
1368 #include <sys/cdefs.h>
1369 #include <sys/signal.h>
1370 #include <ucontext.h>
1371 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1373 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1374 if test $gcc_cv_mcontext_underscores = yes; then
1375 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1376 [mcontext_t fields start with __])
1385 # Check if a valid thread package
1386 case ${enable_threads} in
1389 target_thread_file='single'
1393 target_thread_file='single'
1395 aix | dce | gnat | irix | posix | posix95 | rtems | \
1396 single | solaris | vxworks | win32 )
1397 target_thread_file=${enable_threads}
1400 echo "${enable_threads} is an unknown thread package" 1>&2
1405 if test x${thread_file} = x; then
1406 # No thread file set by target-specific clauses in config.gcc,
1407 # so use file chosen by default logic above
1408 thread_file=${target_thread_file}
1411 # Make gthr-default.h if we have a thread file.
1413 if test $thread_file != single; then
1414 rm -f gthr-default.h
1415 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1416 gthread_flags=-DHAVE_GTHR_DEFAULT
1418 AC_SUBST(gthread_flags)
1425 if test x$enable___cxa_atexit = xyes || \
1426 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1427 if test x$host = x$target; then
1429 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1430 # keyed to flag_use_cxa_atexit
1435 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1436 [echo "__cxa_atexit can't be enabled on this target"])
1440 # We can't check for __cxa_atexit when building a cross, so assume
1444 if test x$use_cxa_atexit = xyes; then
1445 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1446 [Define if you want to use __cxa_atexit, rather than atexit, to
1447 register C++ destructors for local statics and global objects.
1448 This is essential for fully standards-compliant handling of
1449 destructors, but requires __cxa_atexit in libc.])
1454 if test x$with_system_libunwind = xyes; then
1455 if test x$host = x$target; then
1456 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1459 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1460 if test x$use_getipinfo = xyes; then
1461 AC_DEFINE(HAVE_GETIPINFO, 1,
1462 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1464 echo "The system unwind library does not support _Unwind_GetIPInfo."
1467 # Look for a file containing extra machine modes.
1468 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1469 extra_modes_file='$(srcdir)'/config/${extra_modes}
1470 AC_SUBST(extra_modes_file)
1471 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1472 [Define to the name of a file containing a list of extra machine modes
1473 for this architecture.])
1476 # Convert extra_options into a form suitable for Makefile use.
1478 for f in $extra_options; do
1479 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1481 AC_SUBST(extra_opt_files)
1483 # auto-host.h is the file containing items generated by autoconf and is
1484 # the first file included by config.h.
1485 # If host=build, it is correct to have bconfig include auto-host.h
1486 # as well. If host!=build, we are in error and need to do more
1487 # work to find out the build config parameters.
1488 if test x$host = x$build
1490 build_auto=auto-host.h
1492 # We create a subdir, then run autoconf in the subdir.
1493 # To prevent recursion we set host and build for the new
1494 # invocation of configure to the build for this invocation
1501 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1502 *) realsrcdir=../${srcdir};;
1504 saved_CFLAGS="${CFLAGS}"
1505 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1506 ${realsrcdir}/configure \
1507 --enable-languages=${enable_languages-all} \
1508 --target=$target_alias --host=$build_alias --build=$build_alias
1509 CFLAGS="${saved_CFLAGS}"
1511 # We just finished tests for the build machine, so rename
1512 # the file auto-build.h in the gcc directory.
1513 mv auto-host.h ../auto-build.h
1516 build_auto=auto-build.h
1518 AC_SUBST(build_subdir)
1520 tm_file="${tm_file} defaults.h"
1521 tm_p_file="${tm_p_file} tm-preds.h"
1522 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1523 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1524 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1525 # put this back in temporarily.
1526 xm_file="auto-host.h ansidecl.h ${xm_file}"
1533 # Compile in configure arguments.
1534 if test -f configargs.h ; then
1535 # Being re-configured.
1536 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1537 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1539 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1542 # Double all backslashes and backslash all quotes to turn
1543 # gcc_config_arguments into a C string.
1544 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1545 $gcc_config_arguments
1547 gcc_config_arguments_str=`cat conftest.out`
1550 cat > configargs.h <<EOF
1551 /* Generated automatically. */
1552 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1553 static const char thread_model[] = "$thread_file";
1555 static const struct {
1556 const char *name, *value;
1557 } configure_default_options[] = $configure_default_options;
1561 # Internationalization
1562 ZW_GNU_GETTEXT_SISTER_DIR
1564 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1565 # -liconv on the link line twice.
1566 case "$LIBINTL" in *$LIBICONV*)
1570 AC_ARG_ENABLE(secureplt,
1571 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1574 # Windows32 Registry support for specifying GCC installation paths.
1575 AC_ARG_ENABLE(win32-registry,
1576 [ --disable-win32-registry
1577 disable lookup of installation paths in the
1578 Registry on Windows hosts
1579 --enable-win32-registry enable registry lookup (default)
1580 --enable-win32-registry=KEY
1581 use KEY instead of GCC version as the last portion
1582 of the registry key],,)
1585 win32 | pe | cygwin* | mingw32* | uwin*)
1586 if test "x$enable_win32_registry" != xno; then
1587 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1590 if test "x$enable_win32_registry" != xno; then
1591 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1592 [Define to 1 if installation paths should be looked up in the Windows
1593 Registry. Ignored on non-Windows hosts.])
1595 if test "x$enable_win32_registry" != xyes \
1596 && test "x$enable_win32_registry" != x; then
1597 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1598 [Define to be the last component of the Windows registry key under which
1599 to look for installation paths. The full key used will be
1600 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1601 The default is the GCC version number.])
1607 # Get an absolute path to the GCC top-level source directory
1608 holddir=`${PWDCMD-pwd}`
1610 topdir=`${PWDCMD-pwd}`
1613 # Conditionalize the makefile for this host machine.
1615 for f in ${host_xmake_file}
1617 if test -f ${srcdir}/config/$f
1619 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1623 # Conditionalize the makefile for this target machine.
1625 for f in ${tmake_file}
1627 if test -f ${srcdir}/config/$f
1629 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1632 tmake_file="${tmake_file_}"
1634 # This is a terrible hack which will go away some day.
1635 host_cc_for_libada=${CC}
1636 AC_SUBST(host_cc_for_libada)
1638 out_object_file=`basename $out_file .c`.o
1640 tm_file_list="options.h"
1641 tm_include_list="options.h"
1642 for f in $tm_file; do
1645 f=`echo $f | sed 's/^..//'`
1646 tm_file_list="${tm_file_list} $f"
1647 tm_include_list="${tm_include_list} $f"
1650 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1651 tm_include_list="${tm_include_list} $f"
1654 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1655 tm_include_list="${tm_include_list} config/$f"
1662 for f in $tm_p_file; do
1665 tm_p_file_list="${tm_p_file_list} $f"
1666 tm_p_include_list="${tm_p_include_list} $f"
1669 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1670 tm_p_include_list="${tm_p_include_list} config/$f"
1676 for f in $xm_file; do
1679 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1680 xm_include_list="${xm_include_list} $f"
1683 xm_file_list="${xm_file_list} $f"
1684 xm_include_list="${xm_include_list} $f"
1687 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1688 xm_include_list="${xm_include_list} config/$f"
1694 host_xm_include_list=
1695 for f in $host_xm_file; do
1698 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1699 host_xm_include_list="${host_xm_include_list} $f"
1702 host_xm_file_list="${host_xm_file_list} $f"
1703 host_xm_include_list="${host_xm_include_list} $f"
1706 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1707 host_xm_include_list="${host_xm_include_list} config/$f"
1713 for f in $build_xm_file; do
1716 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1717 build_xm_include_list="${build_xm_include_list} $f"
1719 auto-build.h | auto-host.h )
1720 build_xm_file_list="${build_xm_file_list} $f"
1721 build_xm_include_list="${build_xm_include_list} $f"
1724 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1725 build_xm_include_list="${build_xm_include_list} config/$f"
1730 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1731 # cross-compiler which does not use the native headers and libraries.
1732 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1733 CROSS= AC_SUBST(CROSS)
1734 ALL=all.internal AC_SUBST(ALL)
1735 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1737 if test "x$with_build_sysroot" != x; then
1738 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1740 # This value is used, even on a native system, because
1741 # CROSS_SYSTEM_HEADER_DIR is just
1742 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1743 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1746 if test x$host != x$target
1748 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1750 SYSTEM_HEADER_DIR=$build_system_header_dir
1751 case "$host","$target" in
1752 # Darwin crosses can use the host system's libraries and headers,
1753 # because of the fat library support. Of course, it must be the
1754 # same version of Darwin on both sides. Allow the user to
1755 # just say --target=foo-darwin without a version number to mean
1756 # "the version on this system".
1757 *-*-darwin*,*-*-darwin*)
1758 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1759 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1760 if test $hostos = $targetos -o $targetos = darwin ; then
1762 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1767 i?86-*-*,x86_64-*-* \
1768 | powerpc*-*-*,powerpc64*-*-*)
1769 CROSS="$CROSS -DNATIVE_CROSS" ;;
1771 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1772 SYSTEM_HEADER_DIR=$build_system_header_dir
1775 # If this is a cross-compiler that does not
1776 # have its own set of headers then define
1779 # If this is using newlib, without having the headers available now,
1780 # then define inhibit_libc in LIBGCC2_CFLAGS.
1781 # This prevents libgcc2 from containing any code which requires libc
1784 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1785 test x$with_newlib = xyes ; } &&
1786 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1789 AC_SUBST(inhibit_libc)
1791 # When building gcc with a cross-compiler, we need to adjust things so
1792 # that the generator programs are still built with the native compiler.
1793 # Also, we cannot run fixincludes or fix-header.
1795 # These are the normal (build=host) settings:
1796 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1797 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1798 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1800 # Possibly disable fixproto, on a per-target basis.
1801 case ${use_fixproto} in
1806 STMP_FIXPROTO=stmp-fixproto
1809 AC_SUBST(STMP_FIXPROTO)
1811 # And these apply if build != host, or we are generating coverage data
1812 if test x$build != x$host || test "x$coverage_flags" != x
1814 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1816 if test "x$TARGET_SYSTEM_ROOT" = x; then
1817 if test "x$STMP_FIXPROTO" != x; then
1818 STMP_FIXPROTO=stmp-install-fixproto
1823 # Expand extra_headers to include complete path.
1824 # This substitutes for lots of t-* files.
1826 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1827 for file in ${extra_headers} ; do
1828 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1831 # Define collect2 in Makefile.
1832 case $host_can_use_collect2 in
1834 *) collect2='collect2$(exeext)' ;;
1836 AC_SUBST([collect2])
1838 # Add a definition of USE_COLLECT2 if system wants one.
1839 case $use_collect2 in
1840 no) use_collect2= ;;
1843 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1844 xm_defines="${xm_defines} USE_COLLECT2"
1845 case $host_can_use_collect2 in
1847 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1853 # ---------------------------
1854 # Assembler & linker features
1855 # ---------------------------
1857 # Identify the assembler which will work hand-in-glove with the newly
1858 # built GCC, so that we can examine its features. This is the assembler
1859 # which will be driven by the driver program.
1861 # If build != host, and we aren't building gas in-tree, we identify a
1862 # build->target assembler and hope that it will have the same features
1863 # as the host->target assembler we'll be using.
1864 gcc_cv_gas_major_version=
1865 gcc_cv_gas_minor_version=
1866 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1868 m4_pattern_allow([AS_FOR_TARGET])dnl
1869 AS_VAR_SET_IF(gcc_cv_as,, [
1870 if test -x "$DEFAULT_ASSEMBLER"; then
1871 gcc_cv_as="$DEFAULT_ASSEMBLER"
1872 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1873 && test -f ../gas/Makefile \
1874 && test x$build = x$host; then
1875 gcc_cv_as=../gas/as-new$build_exeext
1876 elif test -x as$build_exeext; then
1877 # Build using assembler in the current directory.
1878 gcc_cv_as=./as$build_exeext
1879 elif test -x $AS_FOR_TARGET; then
1880 gcc_cv_as="$AS_FOR_TARGET"
1882 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1885 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1886 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1888 AC_MSG_CHECKING(what assembler to use)
1889 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1890 # Single tree build which includes gas. We want to prefer it
1891 # over whatever linker top-level may have detected, since
1892 # we'll use what we're building after installation anyway.
1893 AC_MSG_RESULT(newly built gas)
1895 _gcc_COMPUTE_GAS_VERSION
1896 in_tree_gas_is_elf=no
1897 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1898 || (grep 'obj_format = multi' ../gas/Makefile \
1899 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1901 in_tree_gas_is_elf=yes
1904 AC_MSG_RESULT($gcc_cv_as)
1908 # Identify the linker which will work hand-in-glove with the newly
1909 # built GCC, so that we can examine its features. This is the linker
1910 # which will be driven by the driver program.
1912 # If build != host, and we aren't building gas in-tree, we identify a
1913 # build->target linker and hope that it will have the same features
1914 # as the host->target linker we'll be using.
1915 gcc_cv_gld_major_version=
1916 gcc_cv_gld_minor_version=
1917 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1918 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1920 AS_VAR_SET_IF(gcc_cv_ld,, [
1921 if test -x "$DEFAULT_LINKER"; then
1922 gcc_cv_ld="$DEFAULT_LINKER"
1923 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1924 && test -f ../ld/Makefile \
1925 && test x$build = x$host; then
1926 gcc_cv_ld=../ld/ld-new$build_exeext
1927 elif test -x collect-ld$build_exeext; then
1928 # Build using linker in the current directory.
1929 gcc_cv_ld=./collect-ld$build_exeext
1930 elif test -x $LD_FOR_TARGET; then
1931 gcc_cv_ld="$LD_FOR_TARGET"
1933 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1936 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1937 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1939 AC_MSG_CHECKING(what linker to use)
1940 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1941 # Single tree build which includes ld. We want to prefer it
1942 # over whatever linker top-level may have detected, since
1943 # we'll use what we're building after installation anyway.
1944 AC_MSG_RESULT(newly built ld)
1946 in_tree_ld_is_elf=no
1947 if (grep 'EMUL = .*elf' ../ld/Makefile \
1948 || grep 'EMUL = .*linux' ../ld/Makefile \
1949 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1950 in_tree_ld_is_elf=yes
1952 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
1955 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1956 if test x$gcc_cv_gld_version != x; then
1960 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1961 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1964 AC_MSG_RESULT($gcc_cv_ld)
1968 # Figure out what nm we will be using.
1969 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1970 AS_VAR_SET_IF(gcc_cv_nm,, [
1971 if test -f $gcc_cv_binutils_srcdir/configure.in \
1972 && test -f ../binutils/Makefile \
1973 && test x$build = x$host; then
1974 gcc_cv_nm=../binutils/nm-new$build_exeext
1975 elif test -x nm$build_exeext; then
1976 gcc_cv_nm=./nm$build_exeext
1977 elif test -x $NM_FOR_TARGET; then
1978 gcc_cv_nm="$NM_FOR_TARGET"
1980 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1983 AC_MSG_CHECKING(what nm to use)
1984 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1985 # Single tree build which includes binutils.
1986 AC_MSG_RESULT(newly built nm)
1989 AC_MSG_RESULT($gcc_cv_nm)
1993 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1994 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1996 # Figure out what objdump we will be using.
1997 AS_VAR_SET_IF(gcc_cv_objdump,, [
1998 if test -f $gcc_cv_binutils_srcdir/configure.in \
1999 && test -f ../binutils/Makefile \
2000 && test x$build = x$host; then
2001 # Single tree build which includes binutils.
2002 gcc_cv_objdump=../binutils/objdump$build_exeext
2003 elif test -x objdump$build_exeext; then
2004 gcc_cv_objdump=./objdump$build_exeext
2005 elif test -x $OBJDUMP_FOR_TARGET; then
2006 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2008 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2011 AC_MSG_CHECKING(what objdump to use)
2012 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2013 # Single tree build which includes binutils.
2014 AC_MSG_RESULT(newly built objdump)
2015 elif test x$gcc_cv_objdump = x; then
2016 AC_MSG_RESULT(not found)
2018 AC_MSG_RESULT($gcc_cv_objdump)
2021 # Figure out what assembler alignment features are present.
2022 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2026 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2027 [Define if your assembler supports .balign and .p2align.])])
2029 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2032 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2033 [Define if your assembler supports specifying the maximum number
2034 of bytes to skip when using the GAS .p2align command.])])
2036 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2039 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2040 [Define if your assembler supports .literal16.])])
2042 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2044 [conftest_label1: .word 0
2046 conftest_label2: .word 0
2048 [if test x$gcc_cv_nm != x; then
2049 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2050 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2051 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2053 else gcc_cv_as_subsection_m1=yes
2055 rm -f conftest.nm1 conftest.nm2
2057 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2058 [Define if your assembler supports .subsection and .subsection -1 starts
2059 emitting at the beginning of your section.])])
2061 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2064 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2066 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2068 [ .weakref foobar, barfnot],,
2069 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2071 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2074 .NSUBSPA $CODE$,COMDAT],,
2075 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2077 # .hidden needs to be supported in both the assembler and the linker,
2078 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2079 # This is irritatingly difficult to feature test for; we have to check the
2080 # date string after the version number. If we've got an in-tree
2081 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2083 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2084 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2089 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2090 [if test $in_tree_ld = yes ; then
2092 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2093 && test $in_tree_ld_is_elf = yes; then
2094 gcc_cv_ld_hidden=yes
2097 gcc_cv_ld_hidden=yes
2098 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2099 if echo "$ld_ver" | grep GNU > /dev/null; then
2101 ld_vers=`echo $ld_ver | sed -n \
2102 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2103 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2104 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2105 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2106 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2107 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2108 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2109 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2110 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2111 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2112 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2113 if test 0"$ld_date" -lt 20020404; then
2114 if test -n "$ld_date"; then
2115 # If there was date string, but was earlier than 2002-04-04, fail
2117 elif test -z "$ld_vers"; then
2118 # If there was no date string nor ld version number, something is wrong
2121 test -z "$ld_vers_patch" && ld_vers_patch=0
2122 if test "$ld_vers_major" -lt 2; then
2124 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2125 gcc_cv_ld_hidden="no"
2126 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2134 hppa64*-*-hpux* | ia64*-*-hpux*)
2135 gcc_cv_ld_hidden=yes
2143 libgcc_visibility=no
2144 AC_SUBST(libgcc_visibility)
2145 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2146 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2147 libgcc_visibility=yes
2148 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2149 [Define if your assembler and linker support .hidden.])
2152 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2153 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2161 [# GAS versions before 2.11 do not support uleb128,
2162 # despite appearing to.
2163 # ??? There exists an elf-specific test that will crash
2164 # the assembler. Perhaps it's better to figure out whether
2165 # arbitrary sections are supported and try the test.
2166 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2167 if echo "$as_ver" | grep GNU > /dev/null; then
2169 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2170 as_major=`echo $as_ver | sed 's/\..*//'`
2171 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2173 if test $as_major -eq 2 && test $as_minor -lt 11
2175 else gcc_cv_as_leb128=yes
2178 [AC_DEFINE(HAVE_AS_LEB128, 1,
2179 [Define if your assembler supports .sleb128 and .uleb128.])])
2181 # GAS versions up to and including 2.11.0 may mis-optimize
2183 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2191 .section .eh_frame,"aw",@progbits
2193 .4byte .LECIE1-.LSCIE1
2207 .4byte .LEFDE1-.LASFDE1
2209 .4byte .LASFDE1-__FRAME_BEGIN__
2217 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2218 cat > conftest.lit <<EOF
2219 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2220 0010 01000000 12000000 18000000 00000000 ................
2221 0020 08000000 04080000 0044 .........D @&t@
2223 cat > conftest.big <<EOF
2224 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2225 0010 00000001 00000012 00000018 00000000 ................
2226 0020 00000008 04000000 0844 .........D @&t@
2228 # If the assembler didn't choke, and we can objdump,
2229 # and we got the correct data, then succeed.
2230 # The text in the here-document typically retains its unix-style line
2231 # endings, while the output of objdump will use host line endings.
2232 # Therefore, use diff -b for the comparisons.
2233 if test x$gcc_cv_objdump != x \
2234 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2235 | tail -3 > conftest.got \
2236 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2237 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2239 gcc_cv_as_eh_frame=yes
2240 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2241 gcc_cv_as_eh_frame=buggy
2243 # Uh oh, what do we do now?
2244 gcc_cv_as_eh_frame=no
2247 if test $gcc_cv_as_eh_frame = buggy; then
2248 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2249 [Define if your assembler mis-optimizes .eh_frame data.])
2252 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2253 [elf,2,12,0], [--fatal-warnings],
2254 [.section .rodata.str, "aMS", @progbits, 1])
2255 if test $gcc_cv_as_shf_merge = no; then
2256 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2257 [elf,2,12,0], [--fatal-warnings],
2258 [.section .rodata.str, "aMS", %progbits, 1])
2260 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2261 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2262 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2264 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2265 [elf,2,16,0], [--fatal-warnings],
2266 [.section .text,"axG",@progbits,.foo,comdat])
2267 if test $gcc_cv_as_comdat_group = yes; then
2268 gcc_cv_as_comdat_group_percent=no
2270 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2271 [elf,2,16,0], [--fatal-warnings],
2272 [.section .text,"axG",%progbits,.foo,comdat])
2274 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2276 if test 0"$ld_date" -lt 20050308; then
2277 if test -n "$ld_date"; then
2278 # If there was date string, but was earlier than 2005-03-08, fail
2280 elif test "$ld_vers_major" -lt 2; then
2282 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2287 # assume linkers other than GNU ld don't support COMDAT group
2290 if test $comdat_group = no; then
2291 gcc_cv_as_comdat_group=no
2292 gcc_cv_as_comdat_group_percent=no
2294 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2295 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2296 [Define 0/1 if your assembler and linker support COMDAT groups.])
2298 # Thread-local storage - the check is heavily parametrized.
2307 .section ".tdata","awT",@progbits
2310 ldq $27,__tls_get_addr($29) !literal!1
2311 lda $16,foo($29) !tlsgd!1
2312 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2313 ldq $27,__tls_get_addr($29) !literal!2
2314 lda $16,foo($29) !tlsldm!2
2315 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2316 ldq $1,foo($29) !gotdtprel
2317 ldah $2,foo($29) !dtprelhi
2318 lda $3,foo($2) !dtprello
2319 lda $4,foo($29) !dtprel
2320 ldq $1,foo($29) !gottprel
2321 ldah $2,foo($29) !tprelhi
2322 lda $3,foo($2) !tprello
2323 lda $4,foo($29) !tprel'
2326 tls_as_opt=--fatal-warnings
2330 .section ".tdata","awT",@progbits
2342 .section ".tdata","awT",@progbits
2346 addil LT%foo-$tls_gdidx$,gp
2347 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2350 addil LT%foo-$tls_ldidx$,gp
2352 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2353 addil LR%foo-$tls_dtpoff$,%ret0
2354 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2356 addil LT%foo-$tls_ieoff$,gp
2357 ldw RT%foo-$tls_ieoff$(%r1),%t2
2360 addil LR%foo-$tls_leoff$,%t1
2361 ldo RR%foo-$tls_leoff$(%r1),%t2'
2364 tls_as_opt=--fatal-warnings
2368 .section ".tdata","awT",%progbits
2381 .section ".tdata","awT",@progbits
2385 leal foo@TLSGD(,%ebx,1), %eax
2386 leal foo@TLSLDM(%ebx), %eax
2387 leal foo@DTPOFF(%eax), %edx
2388 movl foo@GOTTPOFF(%ebx), %eax
2389 subl foo@GOTTPOFF(%ebx), %eax
2390 addl foo@GOTNTPOFF(%ebx), %eax
2391 movl foo@INDNTPOFF, %eax
2392 movl $foo@TPOFF, %eax
2393 subl $foo@TPOFF, %eax
2394 leal foo@NTPOFF(%ecx), %eax'
2397 tls_as_opt=--fatal-warnings
2401 .section ".tdata","awT",@progbits
2405 leaq foo@TLSGD(%rip), %rdi
2406 leaq foo@TLSLD(%rip), %rdi
2407 leaq foo@DTPOFF(%rax), %rdx
2408 movq foo@GOTTPOFF(%rip), %rax
2409 movq $foo@TPOFF, %rax'
2412 tls_as_opt=--fatal-warnings
2416 .section ".tdata","awT",@progbits
2419 addl r16 = @ltoff(@dtpmod(foo#)), gp
2420 addl r17 = @ltoff(@dtprel(foo#)), gp
2421 addl r18 = @ltoff(@tprel(foo#)), gp
2422 addl r19 = @dtprel(foo#), gp
2423 adds r21 = @dtprel(foo#), r13
2424 movl r23 = @dtprel(foo#)
2425 addl r20 = @tprel(foo#), gp
2426 adds r22 = @tprel(foo#), r13
2427 movl r24 = @tprel(foo#)'
2430 tls_as_opt=--fatal-warnings
2434 .section .tdata,"awT",@progbits
2438 addiu $4, $28, %tlsgd(x)
2439 addiu $4, $28, %tlsldm(x)
2440 lui $4, %dtprel_hi(x)
2441 addiu $4, $4, %dtprel_lo(x)
2442 lw $4, %gottprel(x)($28)
2443 lui $4, %tprel_hi(x)
2444 addiu $4, $4, %tprel_lo(x)'
2447 tls_as_opt='-32 --fatal-warnings'
2451 .section ".tdata","awT",@progbits
2459 addi 3,31,ld0@got@tlsgd
2461 addi 3,31,x1@got@tlsld
2464 addis 9,3,x2@dtprel@ha
2465 addi 9,9,x2@dtprel@l
2466 lwz 9,x3@got@tprel(31)
2469 addis 9,2,x2@tprel@ha
2470 addi 9,9,x2@tprel@l'
2473 tls_as_opt="-a32 --fatal-warnings"
2477 .section ".tdata","awT",@progbits
2485 addi 3,2,ld0@got@tlsgd
2491 addi 3,2,x1@got@tlsld
2497 addis 9,3,x2@dtprel@ha
2498 addi 9,9,x2@dtprel@l
2501 ld 9,x3@got@dtprel(2)
2507 tls_as_opt="-a64 --fatal-warnings"
2511 .section ".tdata","awT",@progbits
2520 l %r1,foo@GOTNTPOFF(%r12)
2521 l %r1,0(%r1):tls_load:foo
2522 bas %r14,0(%r1,%r13):tls_gdcall:foo
2523 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2526 tls_as_opt="-m31 --fatal-warnings"
2530 .section ".tdata","awT",@progbits
2538 lg %r1,foo@GOTNTPOFF(%r12)
2539 larl %r1,foo@INDNTPOFF
2540 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2541 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2544 tls_as_opt="-m64 -Aesame --fatal-warnings"
2546 sh-*-* | sh[34]-*-*)
2548 .section ".tdata","awT",@progbits
2558 tls_as_opt=--fatal-warnings
2562 sparc*-sun-solaris2.[56789]*)
2563 # TLS was introduced in the Solaris 9 4/04 release but
2564 # we do not enable it by default on Solaris 9 either.
2565 if test "x$enable_tls" = xyes ; then
2571 sparc*-sun-solaris2.*)
2578 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2580 .section ".tdata",#alloc,#write,#tls
2583 sethi %tgd_hi22(foo), %o0
2584 add %o0, %tgd_lo10(foo), %o1
2585 add %l7, %o1, %o0, %tgd_add(foo)
2586 call __tls_get_addr, %tgd_call(foo)
2587 sethi %tldm_hi22(foo), %l1
2588 add %l1, %tldm_lo10(foo), %l2
2589 add %l7, %l2, %o0, %tldm_add(foo)
2590 call __tls_get_addr, %tldm_call(foo)
2591 sethi %tldo_hix22(foo), %l3
2592 xor %l3, %tldo_lox10(foo), %l4
2593 add %o0, %l4, %l5, %tldo_add(foo)
2594 sethi %tie_hi22(foo), %o3
2595 add %o3, %tie_lo10(foo), %o3
2596 ld [%l7 + %o3], %o2, %tie_ld(foo)
2597 add %g7, %o2, %o4, %tie_add(foo)
2598 sethi %tle_hix22(foo), %l1
2599 xor %l1, %tle_lox10(foo), %o5
2600 ld [%g7 + %o5], %o1'
2605 .section ".tdata","awT",@progbits
2608 sethi %tgd_hi22(foo), %o0
2609 add %o0, %tgd_lo10(foo), %o1
2610 add %l7, %o1, %o0, %tgd_add(foo)
2611 call __tls_get_addr, %tgd_call(foo)
2612 sethi %tldm_hi22(foo), %l1
2613 add %l1, %tldm_lo10(foo), %l2
2614 add %l7, %l2, %o0, %tldm_add(foo)
2615 call __tls_get_addr, %tldm_call(foo)
2616 sethi %tldo_hix22(foo), %l3
2617 xor %l3, %tldo_lox10(foo), %l4
2618 add %o0, %l4, %l5, %tldo_add(foo)
2619 sethi %tie_hi22(foo), %o3
2620 add %o3, %tie_lo10(foo), %o3
2621 ld [%l7 + %o3], %o2, %tie_ld(foo)
2622 add %g7, %o2, %o4, %tie_add(foo)
2623 sethi %tle_hix22(foo), %l1
2624 xor %l1, %tle_lox10(foo), %o5
2625 ld [%g7 + %o5], %o1'
2628 tls_as_opt="-32 --fatal-warnings"
2634 if test "x$enable_tls" = xno ; then
2635 : # TLS explicitly disabled.
2636 elif test "x$enable_tls" = xyes ; then
2637 set_have_as_tls=yes # TLS explicitly enabled.
2638 elif test -z "$tls_first_major"; then
2639 : # If we don't have a check, assume no support.
2641 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2642 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2643 [set_have_as_tls=yes])
2645 if test $set_have_as_tls = yes ; then
2646 AC_DEFINE(HAVE_AS_TLS, 1,
2647 [Define if your assembler supports thread-local storage.])
2650 # Target-specific assembler checks.
2652 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2653 gcc_cv_ld_static_dynamic=no
2654 if test $in_tree_ld = yes ; then
2655 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2656 gcc_cv_ld_static_dynamic=yes
2658 elif test x$gcc_cv_ld != x; then
2659 # Check if linker supports -Bstatic/-Bdynamic option
2660 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2661 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2662 gcc_cv_ld_static_dynamic=yes
2665 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2666 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2667 [Define if your linker supports -Bstatic/-Bdynamic option.])
2669 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2671 if test x"$demangler_in_ld" = xyes; then
2672 AC_MSG_CHECKING(linker --demangle support)
2673 gcc_cv_ld_demangle=no
2674 if test $in_tree_ld = yes; then
2675 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2676 gcc_cv_ld_demangle=yes
2678 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2679 # Check if the GNU linker supports --demangle option
2680 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2681 gcc_cv_ld_demangle=yes
2684 if test x"$gcc_cv_ld_demangle" = xyes; then
2685 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2686 [Define if your linker supports --demangle option.])
2688 AC_MSG_RESULT($gcc_cv_ld_demangle)
2692 # All TARGET_ABI_OSF targets.
2693 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2694 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2695 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2698 extbl $3, $2, $3 !lituse_bytoff!1
2699 ldq $2, a($29) !literal!1
2700 ldq $4, b($29) !literal!2
2701 ldq_u $3, 0($2) !lituse_base!1
2702 ldq $27, f($29) !literal!5
2703 jsr $26, ($27), f !lituse_jsr!5
2704 ldah $29, 0($26) !gpdisp!3
2705 lda $0, c($29) !gprel
2706 ldah $1, d($29) !gprelhigh
2707 lda $1, d($1) !gprellow
2708 lda $29, 0($29) !gpdisp!3],,
2709 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2710 [Define if your assembler supports explicit relocations.])])
2711 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2712 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2715 ldq $27, a($29) !literal!1
2716 jsr $26, ($27), a !lituse_jsrdirect!1],,
2717 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2718 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2722 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2723 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2724 [-no-mul-bug-abort], [.text],,
2725 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2726 [Define if your assembler supports the -no-mul-bug-abort option.])])
2730 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2731 [.register %g2, #scratch],,
2732 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2733 [Define if your assembler supports .register.])])
2735 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2737 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2738 [Define if your assembler supports -relax option.])])
2740 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2741 gcc_cv_as_sparc_ua_pcrel,,
2749 .uaword %r_disp32(foo)],
2750 [if test x$gcc_cv_ld != x \
2751 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2752 gcc_cv_as_sparc_ua_pcrel=yes
2755 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2756 [Define if your assembler and linker support unaligned PC relative relocs.])
2758 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2759 gcc_cv_as_sparc_ua_pcrel_hidden,,
2764 .uaword %r_disp32(foo)
2765 .byte 0x32, 0x33, 0x34
2770 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2771 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2772 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2773 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2774 if $gcc_cv_objdump -R conftest 2> /dev/null \
2775 | grep 'DISP32' > /dev/null 2>&1; then
2778 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2782 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2783 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2784 ]) # unaligned pcrel relocs
2786 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2787 gcc_cv_as_sparc_offsetable_lo10,,
2790 or %g1, %lo(ab) + 12, %g1
2791 or %g1, %lo(ab + 12), %g1],
2792 [if test x$gcc_cv_objdump != x \
2793 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2794 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2795 gcc_cv_as_sparc_offsetable_lo10=yes
2797 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2798 [Define if your assembler supports offsetable %lo().])])
2802 i[34567]86-*-* | x86_64-*-*)
2805 cygwin* | pe | mingw32*)
2806 # Used for DWARF 2 in PE
2807 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2808 gcc_cv_as_ix86_pe_secrel32,
2814 [if test x$gcc_cv_ld != x \
2815 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2816 gcc_cv_as_ix86_pe_secrel32=yes
2819 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2820 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2824 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2825 gcc_cv_as_ix86_filds_fists,
2826 [2,9,0],, [filds mem; fists mem],,
2827 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2828 [Define if your assembler uses the new HImode fild and fist notation.])])
2830 gcc_GAS_CHECK_FEATURE([cmov syntax],
2831 gcc_cv_as_ix86_cmov_sun_syntax,,,
2832 [cmovl.l %edx, %eax],,
2833 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2834 [Define if your assembler supports the Sun syntax for cmov.])])
2836 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2837 gcc_cv_as_ix86_ffreep,,,
2839 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2840 [Define if your assembler supports the ffreep mnemonic.])])
2842 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2843 gcc_cv_as_ix86_sahf,,,
2845 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2846 [Define if your assembler supports the sahf mnemonic.])])
2848 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2849 gcc_cv_as_ix86_diff_sect_delta,,,
2857 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2858 [Define if your assembler supports the subtraction of symbols in different sections.])])
2860 # This one is used unconditionally by i386.[ch]; it is to be defined
2861 # to 1 if the feature is present, 0 otherwise.
2862 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2863 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2869 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2870 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2871 [Define true if the assembler supports '.long foo@GOTOFF'.])
2875 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2876 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2878 addl r15 = @ltoffx(x#), gp
2880 ld8.mov r16 = [[r15]], x#],,
2881 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2882 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2888 *-*-aix*) conftest_s=' .machine "pwr5"
2892 gcc_GAS_CHECK_FEATURE([.machine directive support],
2893 gcc_cv_as_machine_directive,,,
2894 [ .machine ppc7400])
2895 if test x$gcc_cv_as_machine_directive != xyes; then
2896 echo "*** This target requires an assembler supporting \".machine\"" >&2
2897 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2898 test x$build = x$target && exit 1
2902 *) conftest_s=' .machine power4
2907 gcc_GAS_CHECK_FEATURE([mfcr field support],
2908 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2910 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2911 [Define if your assembler supports mfcr field.])])
2914 *-*-aix*) conftest_s=' .machine "pwr5"
2917 *) conftest_s=' .machine power5
2922 gcc_GAS_CHECK_FEATURE([popcntb support],
2923 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2925 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2926 [Define if your assembler supports popcntb field.])])
2929 *-*-aix*) conftest_s=' .machine "pwr5x"
2932 *) conftest_s=' .machine power5
2937 gcc_GAS_CHECK_FEATURE([fp round support],
2938 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2940 [AC_DEFINE(HAVE_AS_FPRND, 1,
2941 [Define if your assembler supports fprnd.])])
2944 *-*-aix*) conftest_s=' .machine "pwr6"
2947 *) conftest_s=' .machine power6
2952 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2953 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2955 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2956 [Define if your assembler supports mffgpr and mftgpr.])])
2959 *-*-aix*) conftest_s=' .csect .text[[PR]]
2961 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2965 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2966 *) conftest_s=' .text
2968 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2971 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2972 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2974 [AC_DEFINE(HAVE_AS_REL16, 1,
2975 [Define if your assembler supports R_PPC_REL16 relocs.])])
2978 *-*-aix*) conftest_s=' .machine "pwr6"
2981 *) conftest_s=' .machine power6
2986 gcc_GAS_CHECK_FEATURE([compare bytes support],
2987 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2989 [AC_DEFINE(HAVE_AS_CMPB, 1,
2990 [Define if your assembler supports cmpb.])])
2993 *-*-aix*) conftest_s=' .machine "pwr6"
2996 *) conftest_s=' .machine power6
3001 gcc_GAS_CHECK_FEATURE([decimal float support],
3002 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3004 [AC_DEFINE(HAVE_AS_DFP, 1,
3005 [Define if your assembler supports DFP instructions.])])
3009 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3010 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3011 [ lw $4,%gp_rel(foo)($4)],,
3012 [if test x$target_cpu_default = x
3013 then target_cpu_default=MASK_EXPLICIT_RELOCS
3014 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3016 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3017 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3018 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3019 [Define if the assembler understands -mno-shared.])])
3023 # Mips and HP-UX need the GNU assembler.
3024 # Linux on IA64 might be able to use the Intel assembler.
3027 mips*-*-* | *-*-hpux* )
3028 if test x$gas_flag = xyes \
3029 || test x"$host" != x"$build" \
3030 || test ! -x "$gcc_cv_as" \
3031 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3034 echo "*** This configuration requires the GNU assembler" >&2
3040 # ??? Not all targets support dwarf2 debug_line, even within a version
3041 # of gas. Moreover, we need to emit a valid instruction to trigger any
3042 # info to the output file. So, as supported targets are added to gas 2.11,
3043 # add some instruction here to (also) show we expect this might work.
3044 # ??? Once 2.11 is released, probably need to add first known working
3045 # version to the per-target configury.
3047 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3048 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3049 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3052 ia64*-*-* | s390*-*-*)
3059 if test x"$insn" != x; then
3061 .file 1 \"conftest.s\"
3064 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3065 gcc_cv_as_dwarf2_debug_line,
3066 [elf,2,11,0],, [$conftest_s],
3067 [if test x$gcc_cv_objdump != x \
3068 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3069 | grep debug_line > /dev/null 2>&1; then
3070 gcc_cv_as_dwarf2_debug_line=yes
3073 # The .debug_line file table must be in the exact order that
3074 # we specified the files, since these indices are also used
3075 # by DW_AT_decl_file. Approximate this test by testing if
3076 # the assembler bitches if the same index is assigned twice.
3077 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3078 gcc_cv_as_dwarf2_file_buggy,,,
3082 if test $gcc_cv_as_dwarf2_debug_line = yes \
3083 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3084 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3085 [Define if your assembler supports dwarf2 .file/.loc directives,
3086 and preserves file table indices exactly as given.])
3089 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3090 gcc_cv_as_gdwarf2_flag,
3091 [elf,2,11,0], [--gdwarf2], [$insn],,
3092 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3093 [Define if your assembler supports the --gdwarf2 option.])])
3095 gcc_GAS_CHECK_FEATURE([--gstabs option],
3096 gcc_cv_as_gstabs_flag,
3097 [elf,2,11,0], [--gstabs], [$insn],
3098 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3099 # and warns about it, but still exits successfully. So check for
3101 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3103 else gcc_cv_as_gstabs_flag=yes
3105 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3106 [Define if your assembler supports the --gstabs option.])])
3109 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3110 [gcc_cv_as_line_zero],
3111 [gcc_cv_as_line_zero=no
3112 if test $in_tree_gas = yes; then
3113 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3114 elif test "x$gcc_cv_as" != x; then
3115 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3116 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3117 test "x`cat conftest.out`" = x
3119 gcc_cv_as_line_zero=yes
3121 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3122 cat conftest.s >&AS_MESSAGE_LOG_FD
3123 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3124 cat conftest.out >&AS_MESSAGE_LOG_FD
3126 rm -f conftest.o conftest.s conftest.out
3128 if test "x$gcc_cv_as_line_zero" = xyes; then
3129 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3130 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3133 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3134 gcc_cv_ld_ro_rw_mix=unknown
3135 if test $in_tree_ld = yes ; then
3136 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3137 && test $in_tree_ld_is_elf = yes; then
3138 gcc_cv_ld_ro_rw_mix=read-write
3140 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3141 echo '.section myfoosect, "a"' > conftest1.s
3142 echo '.section myfoosect, "aw"' > conftest2.s
3143 echo '.byte 1' >> conftest2.s
3144 echo '.section myfoosect, "a"' > conftest3.s
3145 echo '.byte 0' >> conftest3.s
3146 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3147 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3148 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3149 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3150 conftest2.o conftest3.o > /dev/null 2>&1; then
3151 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3152 | sed -e '/myfoosect/!d' -e N`
3153 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3154 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3155 gcc_cv_ld_ro_rw_mix=read-only
3157 gcc_cv_ld_ro_rw_mix=read-write
3162 rm -f conftest.* conftest[123].*
3165 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3166 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3167 [Define if your linker links a mix of read-only
3168 and read-write sections into a read-write section.])
3170 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3172 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3173 gcc_cv_ld_eh_frame_hdr=no
3174 if test $in_tree_ld = yes ; then
3175 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3176 && test $in_tree_ld_is_elf = yes; then
3177 gcc_cv_ld_eh_frame_hdr=yes
3179 elif test x$gcc_cv_ld != x; then
3180 # Check if linker supports --eh-frame-hdr option
3181 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3182 gcc_cv_ld_eh_frame_hdr=yes
3185 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3186 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3187 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3188 [Define if your linker supports --eh-frame-hdr option.])
3190 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3192 AC_MSG_CHECKING(linker position independent executable support)
3194 if test $in_tree_ld = yes ; then
3195 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3196 && test $in_tree_ld_is_elf = yes; then
3199 elif test x$gcc_cv_ld != x; then
3200 # Check if linker supports -pie option
3201 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3205 if test x"$gcc_cv_ld_pie" = xyes; then
3206 AC_DEFINE(HAVE_LD_PIE, 1,
3207 [Define if your linker supports -pie option.])
3209 AC_MSG_RESULT($gcc_cv_ld_pie)
3211 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3212 gcc_cv_ld_eh_gc_sections=no
3213 if test $in_tree_ld = yes ; then
3214 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3215 && test $in_tree_ld_is_elf = yes; then
3216 gcc_cv_ld_eh_gc_sections=yes
3218 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3219 cat > conftest.s <<EOF
3222 .type _start, @function
3225 .size _start, .-_start
3226 .section .text.foo,"ax",@progbits
3227 .type foo, @function
3231 .section .gcc_except_table.foo,"a",@progbits
3234 .section .eh_frame,"a",@progbits
3237 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3238 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3239 | grep "gc-sections option ignored" > /dev/null; then
3240 gcc_cv_ld_eh_gc_sections=no
3241 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3242 gcc_cv_ld_eh_gc_sections=yes
3243 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3244 if test x$gcc_cv_as_comdat_group != xyes; then
3245 gcc_cv_ld_eh_gc_sections=no
3246 cat > conftest.s <<EOF
3249 .type _start, @function
3252 .size _start, .-_start
3253 .section .gnu.linkonce.t.foo,"ax",@progbits
3254 .type foo, @function
3258 .section .gcc_except_table.foo,"a",@progbits
3261 .section .eh_frame,"a",@progbits
3264 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3265 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3266 | grep "gc-sections option ignored" > /dev/null; then
3267 gcc_cv_ld_eh_gc_sections=no
3268 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3269 gcc_cv_ld_eh_gc_sections=yes
3275 rm -f conftest.s conftest.o conftest
3279 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3280 gcc_cv_ld_eh_gc_sections=no
3283 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3284 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3285 [Define if your linker supports garbage collection of
3286 sections in presence of EH frames.])
3288 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3294 AC_CACHE_CHECK(linker --as-needed support,
3295 gcc_cv_ld_as_needed,
3296 [gcc_cv_ld_as_needed=no
3297 if test $in_tree_ld = yes ; then
3298 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3299 && test $in_tree_ld_is_elf = yes; then
3300 gcc_cv_ld_as_needed=yes
3302 elif test x$gcc_cv_ld != x; then
3303 # Check if linker supports --as-needed and --no-as-needed options
3304 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3305 gcc_cv_ld_as_needed=yes
3309 if test x"$gcc_cv_ld_as_needed" = xyes; then
3310 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3311 [Define if your linker supports --as-needed and --no-as-needed options.])
3314 case "$target:$tm_file" in
3315 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3316 AC_CACHE_CHECK(linker support for omitting dot symbols,
3317 gcc_cv_ld_no_dot_syms,
3318 [gcc_cv_ld_no_dot_syms=no
3319 if test $in_tree_ld = yes ; then
3320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3321 gcc_cv_ld_no_dot_syms=yes
3323 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3324 cat > conftest1.s <<EOF
3328 cat > conftest2.s <<EOF
3329 .section ".opd","aw"
3334 .quad .LEfoo,.TOC.@tocbase,0
3340 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3341 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3342 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3343 gcc_cv_ld_no_dot_syms=yes
3345 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3348 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3349 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3350 [Define if your PowerPC64 linker only needs function descriptor syms.])
3355 AC_CACHE_CHECK(linker --sysroot support,
3357 [gcc_cv_ld_sysroot=no
3358 if test $in_tree_ld = yes ; then
3359 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3360 gcc_cv_ld_sysroot=yes
3362 elif test x$gcc_cv_ld != x; then
3363 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3364 gcc_cv_ld_sysroot=yes
3367 if test x"$gcc_cv_ld_sysroot" = xyes; then
3368 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3369 [Define if your linker supports --sysroot.])
3372 if test x$with_sysroot = x && test x$host = x$target \
3373 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3374 && test "$prefix" != "NONE"; then
3375 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3376 [Define to PREFIX/include if cpp should also search that directory.])
3379 # Test for stack protector support in target C library.
3380 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3381 gcc_cv_libc_provides_ssp,
3382 [gcc_cv_libc_provides_ssp=no
3385 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3386 if test "x$with_sysroot" = x; then
3387 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3388 elif test "x$with_build_sysroot" != "x"; then
3389 glibc_header_dir="${with_build_sysroot}/usr/include"
3390 elif test "x$with_sysroot" = xyes; then
3391 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3393 glibc_header_dir="${with_sysroot}/usr/include"
3396 glibc_header_dir=/usr/include
3398 # glibc 2.4 and later provides __stack_chk_fail and
3399 # either __stack_chk_guard, or TLS access to stack guard canary.
3400 if test -f $glibc_header_dir/features.h \
3401 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3402 $glibc_header_dir/features.h > /dev/null; then
3403 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3404 $glibc_header_dir/features.h > /dev/null; then
3405 gcc_cv_libc_provides_ssp=yes
3406 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3407 $glibc_header_dir/features.h > /dev/null \
3408 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3409 $glibc_header_dir/features.h > /dev/null; then
3410 gcc_cv_libc_provides_ssp=yes
3415 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3416 [echo "no __stack_chk_fail on this target"])
3418 *) gcc_cv_libc_provides_ssp=no ;;
3421 if test x$gcc_cv_libc_provides_ssp = xyes; then
3422 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3423 [Define if your target C library provides stack protector support])
3426 # Check if TFmode long double should be used by default or not.
3427 # Some glibc targets used DFmode long double, but with glibc 2.4
3428 # and later they can use TFmode.
3430 powerpc*-*-*gnu* | \
3434 AC_ARG_WITH(long-double-128,
3435 [ --with-long-double-128 Use 128-bit long double by default.],
3436 gcc_cv_target_ldbl128="$with_long_double_128",
3437 [gcc_cv_target_ldbl128=no
3438 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3439 if test "x$with_sysroot" = x; then
3440 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3441 elif test "x$with_build_sysroot" != "x"; then
3442 glibc_header_dir="${with_build_sysroot}/usr/include"
3443 elif test "x$with_sysroot" = xyes; then
3444 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3446 glibc_header_dir="${with_sysroot}/usr/include"
3449 glibc_header_dir=/usr/include
3452 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3453 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3454 && gcc_cv_target_ldbl128=yes
3459 if test x$gcc_cv_target_ldbl128 = xyes; then
3460 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3461 [Define if TFmode long double should be the default])
3464 # Find out what GC implementation we want, or may, use.
3466 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3474 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3477 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3482 echo "Using $GGC for garbage collection."
3484 # Use the system's zlib library.
3486 zlibinc="-I\$(srcdir)/../zlib"
3487 AC_ARG_WITH(system-zlib,
3488 [ --with-system-zlib use installed libz],
3495 dnl Very limited version of automake's enable-maintainer-mode
3497 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3498 dnl maintainer-mode is disabled by default
3499 AC_ARG_ENABLE(maintainer-mode,
3500 [ --enable-maintainer-mode
3501 enable make rules and dependencies not useful
3502 (and sometimes confusing) to the casual installer],
3503 maintainer_mode=$enableval,
3506 AC_MSG_RESULT($maintainer_mode)
3508 if test "$maintainer_mode" = "yes"; then
3519 # Make empty files to contain the specs and options for each language.
3520 # Then add #include lines to for a compiler that has specs and/or options.
3526 # These (without "all_") are set in each config-lang.in.
3527 # `language' must be a single word so is spelled singularly.
3530 all_outputs='Makefile gccbug libada-mk'
3531 # List of language makefile fragments.
3533 # List of language subdirectory makefiles. Deprecated.
3535 # Additional files for gengtype
3536 all_gtfiles="$target_gtfiles"
3538 # These are the languages that are set in --enable-languages,
3539 # and are available in the GCC tree.
3540 all_selected_languages=
3542 # Add the language fragments.
3543 # Languages are added via two mechanisms. Some information must be
3544 # recorded in makefile variables, these are defined in config-lang.in.
3545 # We accumulate them and plug them into the main Makefile.
3546 # The other mechanism is a set of hooks for each of the main targets
3547 # like `clean', `install', etc.
3549 language_hooks="Make-hooks"
3551 for lang in ${srcdir}/*/config-lang.in
3554 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3556 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3557 if test "x$lang_alias" = x
3559 echo "$lang doesn't set \$language." 1>&2
3562 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3563 subdirs="$subdirs $subdir"
3564 case ",$enable_languages," in
3566 all_selected_languages="$all_selected_languages $lang_alias"
3567 if test -f $srcdir/$subdir/lang-specs.h; then
3568 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3580 . ${srcdir}/$subdir/config-lang.in
3581 if test "x$language" = x
3583 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3588 case ",$enable_languages," in
3591 for i in $subdir_requires; do
3592 test -f "${srcdir}/$i/config-lang.in" && continue
3600 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3601 if test -f $srcdir/$subdir/lang.opt; then
3602 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3604 if test -f $srcdir/$subdir/$subdir-tree.def; then
3605 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3607 if test -f ${srcdir}/$subdir/Makefile.in
3608 then all_lang_makefiles="$subdir/Makefile"
3610 all_languages="$all_languages $language"
3611 all_compilers="$all_compilers $compilers"
3612 all_outputs="$all_outputs $outputs"
3613 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3616 # Pick up gtfiles for c
3618 . ${srcdir}/c-config-lang.in
3619 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3622 for language in $all_selected_languages
3624 check_languages="$check_languages check-$language"
3627 # We link each language in with a set of hooks, reached indirectly via
3628 # lang.${target}. Only do so for selected languages.
3632 target_list="all.cross start.encap rest.encap tags \
3633 install-common install-man install-info install-pdf dvi pdf \
3634 html uninstall info man srcextra srcman srcinfo \
3635 mostlyclean clean distclean maintainer-clean"
3637 for t in $target_list
3640 for lang in $all_selected_languages
3644 echo "lang.$t: $x" >> Make-hooks
3653 echo "dir ." > .gdbinit
3654 echo "dir ${srcdir}" >> .gdbinit
3655 if test x$gdb_needs_out_file_path = xyes
3657 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3659 if test "x$subdirs" != x; then
3662 echo "dir ${srcdir}/$s" >> .gdbinit
3665 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3667 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3668 # absolute path for gcc_tooldir based on inserting the number of up-directory
3669 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3670 # $(libsubdir)/@(unlibsubdir) based path.
3671 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3672 # make and thus we'd get different behavior depending on where we built the
3674 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3675 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3677 changequote(<<, >>)dnl
3678 # An explanation of the sed strings:
3679 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3680 # -e 's|/$||' match a trailing forward slash and eliminates it
3681 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3682 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3684 # (*) Note this pattern overwrites the first character of the string
3685 # with a forward slash if one is not already present. This is not a
3686 # problem because the exact names of the sub-directories concerned is
3687 # unimportant, just the number of them matters.
3689 # The practical upshot of these patterns is like this:
3691 # prefix exec_prefix result
3692 # ------ ----------- ------
3694 # /foo/ /foo/bar ../
3695 # /foo /foo/bar/ ../
3696 # /foo/ /foo/bar/ ../
3697 # /foo /foo/bar/ugg ../../
3700 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3701 changequote([, ])dnl
3703 AC_SUBST(gcc_tooldir)
3706 # Find a directory in which to install a shared libgcc.
3708 AC_ARG_ENABLE(version-specific-runtime-libs,
3709 [ --enable-version-specific-runtime-libs
3710 specify that runtime libraries should be
3711 installed in a compiler-specific directory])
3713 AC_ARG_WITH(slibdir,
3714 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3715 slibdir="$with_slibdir",
3716 if test "${enable_version_specific_runtime_libs+set}" = set; then
3717 slibdir='$(libsubdir)'
3718 elif test "$host" != "$target"; then
3719 slibdir='$(build_tooldir)/lib'
3725 objdir=`${PWDCMD-pwd}`
3728 AC_ARG_WITH(datarootdir,
3729 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3730 datarootdir="\${prefix}/$with_datarootdir",
3731 datarootdir='$(prefix)/share')
3732 AC_SUBST(datarootdir)
3735 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3736 docdir="\${prefix}/$with_docdir",
3737 docdir='$(datarootdir)')
3740 AC_ARG_WITH(htmldir,
3741 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3742 htmldir="\${prefix}/$with_htmldir",
3743 htmldir='$(docdir)')
3746 # Substitute configuration variables
3749 AC_SUBST(all_compilers)
3750 AC_SUBST(all_gtfiles)
3751 AC_SUBST(all_lang_makefrags)
3752 AC_SUBST(all_lang_makefiles)
3753 AC_SUBST(all_languages)
3754 AC_SUBST(all_selected_languages)
3755 AC_SUBST(build_exeext)
3756 AC_SUBST(build_install_headers_dir)
3757 AC_SUBST(build_xm_file_list)
3758 AC_SUBST(build_xm_include_list)
3759 AC_SUBST(build_xm_defines)
3760 AC_SUBST(check_languages)
3761 AC_SUBST(cpp_install_dir)
3762 AC_SUBST(xmake_file)
3763 AC_SUBST(tmake_file)
3764 AC_SUBST(extra_gcc_objs)
3765 AC_SUBST(extra_headers_list)
3766 AC_SUBST(extra_objs)
3767 AC_SUBST(extra_parts)
3768 AC_SUBST(extra_passes)
3769 AC_SUBST(extra_programs)
3770 AC_SUBST(float_h_file)
3771 AC_SUBST(gcc_config_arguments)
3772 AC_SUBST(gcc_gxx_include_dir)
3773 AC_SUBST(host_exeext)
3774 AC_SUBST(host_xm_file_list)
3775 AC_SUBST(host_xm_include_list)
3776 AC_SUBST(host_xm_defines)
3777 AC_SUBST(out_host_hook_obj)
3779 AC_SUBST(lang_opt_files)
3780 AC_SUBST(lang_specs_files)
3781 AC_SUBST(lang_tree_files)
3782 AC_SUBST(local_prefix)
3784 AC_SUBST(objc_boehm_gc)
3786 AC_SUBST(out_object_file)
3787 AC_SUBST(thread_file)
3788 AC_SUBST(tm_file_list)
3789 AC_SUBST(tm_include_list)
3790 AC_SUBST(tm_defines)
3791 AC_SUBST(tm_p_file_list)
3792 AC_SUBST(tm_p_include_list)
3793 AC_SUBST(xm_file_list)
3794 AC_SUBST(xm_include_list)
3795 AC_SUBST(xm_defines)
3796 AC_SUBST(c_target_objs)
3797 AC_SUBST(cxx_target_objs)
3798 AC_SUBST(target_cpu_default)
3800 AC_SUBST_FILE(language_hooks)
3803 if test x${build} = x${host} ; then
3804 if test x${host} = x${target} ; then
3805 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3807 echo "Links are now set up to build a cross-compiler" 1>&2
3808 echo " from ${host} to ${target}." 1>&2
3811 if test x${host} = x${target} ; then
3812 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3813 echo " for ${target}." 1>&2
3815 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3816 echo " from ${host} to ${target}." 1>&2
3820 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3821 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3823 # Configure the subdirectories
3824 # AC_CONFIG_SUBDIRS($subdirs)
3826 # Create the Makefile
3827 # and configure language subdirectories
3828 AC_CONFIG_FILES($all_outputs)
3830 AC_CONFIG_COMMANDS([default],
3832 case ${CONFIG_HEADERS} in
3833 *auto-host.h:config.in*)
3836 # Make sure all the subdirs exist.
3837 for d in $subdirs doc build
3839 test -d $d || mkdir $d
3842 [subdirs='$subdirs'])