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)
1887 case "$ORIGINAL_AS_FOR_TARGET" in
1888 ./as | ./as$build_exeext) ;;
1889 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1892 AC_MSG_CHECKING(what assembler to use)
1893 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1894 # Single tree build which includes gas. We want to prefer it
1895 # over whatever linker top-level may have detected, since
1896 # we'll use what we're building after installation anyway.
1897 AC_MSG_RESULT(newly built gas)
1899 _gcc_COMPUTE_GAS_VERSION
1900 in_tree_gas_is_elf=no
1901 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1902 || (grep 'obj_format = multi' ../gas/Makefile \
1903 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1905 in_tree_gas_is_elf=yes
1908 AC_MSG_RESULT($gcc_cv_as)
1912 # Identify the linker which will work hand-in-glove with the newly
1913 # built GCC, so that we can examine its features. This is the linker
1914 # which will be driven by the driver program.
1916 # If build != host, and we aren't building gas in-tree, we identify a
1917 # build->target linker and hope that it will have the same features
1918 # as the host->target linker we'll be using.
1919 gcc_cv_gld_major_version=
1920 gcc_cv_gld_minor_version=
1921 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1922 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1924 AS_VAR_SET_IF(gcc_cv_ld,, [
1925 if test -x "$DEFAULT_LINKER"; then
1926 gcc_cv_ld="$DEFAULT_LINKER"
1927 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1928 && test -f ../ld/Makefile \
1929 && test x$build = x$host; then
1930 gcc_cv_ld=../ld/ld-new$build_exeext
1931 elif test -x collect-ld$build_exeext; then
1932 # Build using linker in the current directory.
1933 gcc_cv_ld=./collect-ld$build_exeext
1934 elif test -x $LD_FOR_TARGET; then
1935 gcc_cv_ld="$LD_FOR_TARGET"
1937 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1940 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1941 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1942 case "$ORIGINAL_LD_FOR_TARGET" in
1943 ./collect-ld | ./collect-ld$build_exeext) ;;
1944 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1947 AC_MSG_CHECKING(what linker to use)
1948 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1949 # Single tree build which includes ld. We want to prefer it
1950 # over whatever linker top-level may have detected, since
1951 # we'll use what we're building after installation anyway.
1952 AC_MSG_RESULT(newly built ld)
1954 in_tree_ld_is_elf=no
1955 if (grep 'EMUL = .*elf' ../ld/Makefile \
1956 || grep 'EMUL = .*linux' ../ld/Makefile \
1957 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1958 in_tree_ld_is_elf=yes
1960 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
1963 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1964 if test x$gcc_cv_gld_version != x; then
1968 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1969 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1972 AC_MSG_RESULT($gcc_cv_ld)
1976 # Figure out what nm we will be using.
1977 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1978 AS_VAR_SET_IF(gcc_cv_nm,, [
1979 if test -f $gcc_cv_binutils_srcdir/configure.in \
1980 && test -f ../binutils/Makefile \
1981 && test x$build = x$host; then
1982 gcc_cv_nm=../binutils/nm-new$build_exeext
1983 elif test -x nm$build_exeext; then
1984 gcc_cv_nm=./nm$build_exeext
1985 elif test -x $NM_FOR_TARGET; then
1986 gcc_cv_nm="$NM_FOR_TARGET"
1988 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1991 AC_MSG_CHECKING(what nm to use)
1992 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1993 # Single tree build which includes binutils.
1994 AC_MSG_RESULT(newly built nm)
1997 AC_MSG_RESULT($gcc_cv_nm)
2001 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2002 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2003 case "$ORIGINAL_NM_FOR_TARGET" in
2004 ./nm | ./nm$build_exeext) ;;
2005 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2009 # Figure out what objdump we will be using.
2010 AS_VAR_SET_IF(gcc_cv_objdump,, [
2011 if test -f $gcc_cv_binutils_srcdir/configure.in \
2012 && test -f ../binutils/Makefile \
2013 && test x$build = x$host; then
2014 # Single tree build which includes binutils.
2015 gcc_cv_objdump=../binutils/objdump$build_exeext
2016 elif test -x objdump$build_exeext; then
2017 gcc_cv_objdump=./objdump$build_exeext
2018 elif test -x $OBJDUMP_FOR_TARGET; then
2019 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2021 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2024 AC_MSG_CHECKING(what objdump to use)
2025 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2026 # Single tree build which includes binutils.
2027 AC_MSG_RESULT(newly built objdump)
2028 elif test x$gcc_cv_objdump = x; then
2029 AC_MSG_RESULT(not found)
2031 AC_MSG_RESULT($gcc_cv_objdump)
2034 # Figure out what assembler alignment features are present.
2035 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2039 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2040 [Define if your assembler supports .balign and .p2align.])])
2042 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2045 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2046 [Define if your assembler supports specifying the maximum number
2047 of bytes to skip when using the GAS .p2align command.])])
2049 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2052 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2053 [Define if your assembler supports .literal16.])])
2055 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2057 [conftest_label1: .word 0
2059 conftest_label2: .word 0
2061 [if test x$gcc_cv_nm != x; then
2062 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2063 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2064 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2066 else gcc_cv_as_subsection_m1=yes
2068 rm -f conftest.nm1 conftest.nm2
2070 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2071 [Define if your assembler supports .subsection and .subsection -1 starts
2072 emitting at the beginning of your section.])])
2074 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2077 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2079 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2081 [ .weakref foobar, barfnot],,
2082 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2084 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2087 .NSUBSPA $CODE$,COMDAT],,
2088 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2090 # .hidden needs to be supported in both the assembler and the linker,
2091 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2092 # This is irritatingly difficult to feature test for; we have to check the
2093 # date string after the version number. If we've got an in-tree
2094 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2096 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2097 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2102 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2103 [if test $in_tree_ld = yes ; then
2105 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2106 && test $in_tree_ld_is_elf = yes; then
2107 gcc_cv_ld_hidden=yes
2110 gcc_cv_ld_hidden=yes
2111 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2112 if echo "$ld_ver" | grep GNU > /dev/null; then
2114 ld_vers=`echo $ld_ver | sed -n \
2115 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2116 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2117 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2118 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2119 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2120 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2121 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2122 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2123 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2124 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2125 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2126 if test 0"$ld_date" -lt 20020404; then
2127 if test -n "$ld_date"; then
2128 # If there was date string, but was earlier than 2002-04-04, fail
2130 elif test -z "$ld_vers"; then
2131 # If there was no date string nor ld version number, something is wrong
2134 test -z "$ld_vers_patch" && ld_vers_patch=0
2135 if test "$ld_vers_major" -lt 2; then
2137 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2138 gcc_cv_ld_hidden="no"
2139 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2147 hppa64*-*-hpux* | ia64*-*-hpux*)
2148 gcc_cv_ld_hidden=yes
2156 libgcc_visibility=no
2157 AC_SUBST(libgcc_visibility)
2158 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2159 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2160 libgcc_visibility=yes
2161 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2162 [Define if your assembler and linker support .hidden.])
2165 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2166 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2174 [# GAS versions before 2.11 do not support uleb128,
2175 # despite appearing to.
2176 # ??? There exists an elf-specific test that will crash
2177 # the assembler. Perhaps it's better to figure out whether
2178 # arbitrary sections are supported and try the test.
2179 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2180 if echo "$as_ver" | grep GNU > /dev/null; then
2182 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2183 as_major=`echo $as_ver | sed 's/\..*//'`
2184 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2186 if test $as_major -eq 2 && test $as_minor -lt 11
2188 else gcc_cv_as_leb128=yes
2191 [AC_DEFINE(HAVE_AS_LEB128, 1,
2192 [Define if your assembler supports .sleb128 and .uleb128.])])
2194 # GAS versions up to and including 2.11.0 may mis-optimize
2196 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2204 .section .eh_frame,"aw",@progbits
2206 .4byte .LECIE1-.LSCIE1
2220 .4byte .LEFDE1-.LASFDE1
2222 .4byte .LASFDE1-__FRAME_BEGIN__
2230 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2231 cat > conftest.lit <<EOF
2232 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2233 0010 01000000 12000000 18000000 00000000 ................
2234 0020 08000000 04080000 0044 .........D @&t@
2236 cat > conftest.big <<EOF
2237 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2238 0010 00000001 00000012 00000018 00000000 ................
2239 0020 00000008 04000000 0844 .........D @&t@
2241 # If the assembler didn't choke, and we can objdump,
2242 # and we got the correct data, then succeed.
2243 # The text in the here-document typically retains its unix-style line
2244 # endings, while the output of objdump will use host line endings.
2245 # Therefore, use diff -b for the comparisons.
2246 if test x$gcc_cv_objdump != x \
2247 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2248 | tail -3 > conftest.got \
2249 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2250 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2252 gcc_cv_as_eh_frame=yes
2253 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2254 gcc_cv_as_eh_frame=buggy
2256 # Uh oh, what do we do now?
2257 gcc_cv_as_eh_frame=no
2260 if test $gcc_cv_as_eh_frame = buggy; then
2261 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2262 [Define if your assembler mis-optimizes .eh_frame data.])
2265 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2266 [elf,2,12,0], [--fatal-warnings],
2267 [.section .rodata.str, "aMS", @progbits, 1])
2268 if test $gcc_cv_as_shf_merge = no; then
2269 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2270 [elf,2,12,0], [--fatal-warnings],
2271 [.section .rodata.str, "aMS", %progbits, 1])
2273 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2274 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2275 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2277 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2278 [elf,2,16,0], [--fatal-warnings],
2279 [.section .text,"axG",@progbits,.foo,comdat])
2280 if test $gcc_cv_as_comdat_group = yes; then
2281 gcc_cv_as_comdat_group_percent=no
2283 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2284 [elf,2,16,0], [--fatal-warnings],
2285 [.section .text,"axG",%progbits,.foo,comdat])
2287 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2289 if test 0"$ld_date" -lt 20050308; then
2290 if test -n "$ld_date"; then
2291 # If there was date string, but was earlier than 2005-03-08, fail
2293 elif test "$ld_vers_major" -lt 2; then
2295 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2300 # assume linkers other than GNU ld don't support COMDAT group
2303 if test $comdat_group = no; then
2304 gcc_cv_as_comdat_group=no
2305 gcc_cv_as_comdat_group_percent=no
2307 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2308 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2309 [Define 0/1 if your assembler and linker support COMDAT groups.])
2311 # Thread-local storage - the check is heavily parametrized.
2320 .section ".tdata","awT",@progbits
2323 ldq $27,__tls_get_addr($29) !literal!1
2324 lda $16,foo($29) !tlsgd!1
2325 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2326 ldq $27,__tls_get_addr($29) !literal!2
2327 lda $16,foo($29) !tlsldm!2
2328 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2329 ldq $1,foo($29) !gotdtprel
2330 ldah $2,foo($29) !dtprelhi
2331 lda $3,foo($2) !dtprello
2332 lda $4,foo($29) !dtprel
2333 ldq $1,foo($29) !gottprel
2334 ldah $2,foo($29) !tprelhi
2335 lda $3,foo($2) !tprello
2336 lda $4,foo($29) !tprel'
2339 tls_as_opt=--fatal-warnings
2343 .section ".tdata","awT",@progbits
2355 .section ".tdata","awT",@progbits
2359 addil LT%foo-$tls_gdidx$,gp
2360 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2363 addil LT%foo-$tls_ldidx$,gp
2365 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2366 addil LR%foo-$tls_dtpoff$,%ret0
2367 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2369 addil LT%foo-$tls_ieoff$,gp
2370 ldw RT%foo-$tls_ieoff$(%r1),%t2
2373 addil LR%foo-$tls_leoff$,%t1
2374 ldo RR%foo-$tls_leoff$(%r1),%t2'
2377 tls_as_opt=--fatal-warnings
2381 .section ".tdata","awT",%progbits
2394 .section ".tdata","awT",@progbits
2398 leal foo@TLSGD(,%ebx,1), %eax
2399 leal foo@TLSLDM(%ebx), %eax
2400 leal foo@DTPOFF(%eax), %edx
2401 movl foo@GOTTPOFF(%ebx), %eax
2402 subl foo@GOTTPOFF(%ebx), %eax
2403 addl foo@GOTNTPOFF(%ebx), %eax
2404 movl foo@INDNTPOFF, %eax
2405 movl $foo@TPOFF, %eax
2406 subl $foo@TPOFF, %eax
2407 leal foo@NTPOFF(%ecx), %eax'
2410 tls_as_opt=--fatal-warnings
2414 .section ".tdata","awT",@progbits
2418 leaq foo@TLSGD(%rip), %rdi
2419 leaq foo@TLSLD(%rip), %rdi
2420 leaq foo@DTPOFF(%rax), %rdx
2421 movq foo@GOTTPOFF(%rip), %rax
2422 movq $foo@TPOFF, %rax'
2425 tls_as_opt=--fatal-warnings
2429 .section ".tdata","awT",@progbits
2432 addl r16 = @ltoff(@dtpmod(foo#)), gp
2433 addl r17 = @ltoff(@dtprel(foo#)), gp
2434 addl r18 = @ltoff(@tprel(foo#)), gp
2435 addl r19 = @dtprel(foo#), gp
2436 adds r21 = @dtprel(foo#), r13
2437 movl r23 = @dtprel(foo#)
2438 addl r20 = @tprel(foo#), gp
2439 adds r22 = @tprel(foo#), r13
2440 movl r24 = @tprel(foo#)'
2443 tls_as_opt=--fatal-warnings
2447 .section .tdata,"awT",@progbits
2451 addiu $4, $28, %tlsgd(x)
2452 addiu $4, $28, %tlsldm(x)
2453 lui $4, %dtprel_hi(x)
2454 addiu $4, $4, %dtprel_lo(x)
2455 lw $4, %gottprel(x)($28)
2456 lui $4, %tprel_hi(x)
2457 addiu $4, $4, %tprel_lo(x)'
2460 tls_as_opt='-32 --fatal-warnings'
2464 .section ".tdata","awT",@progbits
2472 addi 3,31,ld0@got@tlsgd
2474 addi 3,31,x1@got@tlsld
2477 addis 9,3,x2@dtprel@ha
2478 addi 9,9,x2@dtprel@l
2479 lwz 9,x3@got@tprel(31)
2482 addis 9,2,x2@tprel@ha
2483 addi 9,9,x2@tprel@l'
2486 tls_as_opt="-a32 --fatal-warnings"
2490 .section ".tdata","awT",@progbits
2498 addi 3,2,ld0@got@tlsgd
2504 addi 3,2,x1@got@tlsld
2510 addis 9,3,x2@dtprel@ha
2511 addi 9,9,x2@dtprel@l
2514 ld 9,x3@got@dtprel(2)
2520 tls_as_opt="-a64 --fatal-warnings"
2524 .section ".tdata","awT",@progbits
2533 l %r1,foo@GOTNTPOFF(%r12)
2534 l %r1,0(%r1):tls_load:foo
2535 bas %r14,0(%r1,%r13):tls_gdcall:foo
2536 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2539 tls_as_opt="-m31 --fatal-warnings"
2543 .section ".tdata","awT",@progbits
2551 lg %r1,foo@GOTNTPOFF(%r12)
2552 larl %r1,foo@INDNTPOFF
2553 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2554 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2557 tls_as_opt="-m64 -Aesame --fatal-warnings"
2559 sh-*-* | sh[34]-*-*)
2561 .section ".tdata","awT",@progbits
2571 tls_as_opt=--fatal-warnings
2575 sparc*-sun-solaris2.[56789]*)
2576 # TLS was introduced in the Solaris 9 4/04 release but
2577 # we do not enable it by default on Solaris 9 either.
2578 if test "x$enable_tls" = xyes ; then
2584 sparc*-sun-solaris2.*)
2591 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2593 .section ".tdata",#alloc,#write,#tls
2596 sethi %tgd_hi22(foo), %o0
2597 add %o0, %tgd_lo10(foo), %o1
2598 add %l7, %o1, %o0, %tgd_add(foo)
2599 call __tls_get_addr, %tgd_call(foo)
2600 sethi %tldm_hi22(foo), %l1
2601 add %l1, %tldm_lo10(foo), %l2
2602 add %l7, %l2, %o0, %tldm_add(foo)
2603 call __tls_get_addr, %tldm_call(foo)
2604 sethi %tldo_hix22(foo), %l3
2605 xor %l3, %tldo_lox10(foo), %l4
2606 add %o0, %l4, %l5, %tldo_add(foo)
2607 sethi %tie_hi22(foo), %o3
2608 add %o3, %tie_lo10(foo), %o3
2609 ld [%l7 + %o3], %o2, %tie_ld(foo)
2610 add %g7, %o2, %o4, %tie_add(foo)
2611 sethi %tle_hix22(foo), %l1
2612 xor %l1, %tle_lox10(foo), %o5
2613 ld [%g7 + %o5], %o1'
2618 .section ".tdata","awT",@progbits
2621 sethi %tgd_hi22(foo), %o0
2622 add %o0, %tgd_lo10(foo), %o1
2623 add %l7, %o1, %o0, %tgd_add(foo)
2624 call __tls_get_addr, %tgd_call(foo)
2625 sethi %tldm_hi22(foo), %l1
2626 add %l1, %tldm_lo10(foo), %l2
2627 add %l7, %l2, %o0, %tldm_add(foo)
2628 call __tls_get_addr, %tldm_call(foo)
2629 sethi %tldo_hix22(foo), %l3
2630 xor %l3, %tldo_lox10(foo), %l4
2631 add %o0, %l4, %l5, %tldo_add(foo)
2632 sethi %tie_hi22(foo), %o3
2633 add %o3, %tie_lo10(foo), %o3
2634 ld [%l7 + %o3], %o2, %tie_ld(foo)
2635 add %g7, %o2, %o4, %tie_add(foo)
2636 sethi %tle_hix22(foo), %l1
2637 xor %l1, %tle_lox10(foo), %o5
2638 ld [%g7 + %o5], %o1'
2641 tls_as_opt="-32 --fatal-warnings"
2647 if test "x$enable_tls" = xno ; then
2648 : # TLS explicitly disabled.
2649 elif test "x$enable_tls" = xyes ; then
2650 set_have_as_tls=yes # TLS explicitly enabled.
2651 elif test -z "$tls_first_major"; then
2652 : # If we don't have a check, assume no support.
2654 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2655 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2656 [set_have_as_tls=yes])
2658 if test $set_have_as_tls = yes ; then
2659 AC_DEFINE(HAVE_AS_TLS, 1,
2660 [Define if your assembler supports thread-local storage.])
2663 # Target-specific assembler checks.
2665 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2666 gcc_cv_ld_static_dynamic=no
2667 if test $in_tree_ld = yes ; then
2668 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2669 gcc_cv_ld_static_dynamic=yes
2671 elif test x$gcc_cv_ld != x; then
2672 # Check if linker supports -Bstatic/-Bdynamic option
2673 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2674 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2675 gcc_cv_ld_static_dynamic=yes
2678 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2679 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2680 [Define if your linker supports -Bstatic/-Bdynamic option.])
2682 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2684 if test x"$demangler_in_ld" = xyes; then
2685 AC_MSG_CHECKING(linker --demangle support)
2686 gcc_cv_ld_demangle=no
2687 if test $in_tree_ld = yes; then
2688 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2689 gcc_cv_ld_demangle=yes
2691 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2692 # Check if the GNU linker supports --demangle option
2693 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2694 gcc_cv_ld_demangle=yes
2697 if test x"$gcc_cv_ld_demangle" = xyes; then
2698 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2699 [Define if your linker supports --demangle option.])
2701 AC_MSG_RESULT($gcc_cv_ld_demangle)
2705 # All TARGET_ABI_OSF targets.
2706 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2707 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2708 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2711 extbl $3, $2, $3 !lituse_bytoff!1
2712 ldq $2, a($29) !literal!1
2713 ldq $4, b($29) !literal!2
2714 ldq_u $3, 0($2) !lituse_base!1
2715 ldq $27, f($29) !literal!5
2716 jsr $26, ($27), f !lituse_jsr!5
2717 ldah $29, 0($26) !gpdisp!3
2718 lda $0, c($29) !gprel
2719 ldah $1, d($29) !gprelhigh
2720 lda $1, d($1) !gprellow
2721 lda $29, 0($29) !gpdisp!3],,
2722 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2723 [Define if your assembler supports explicit relocations.])])
2724 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2725 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2728 ldq $27, a($29) !literal!1
2729 jsr $26, ($27), a !lituse_jsrdirect!1],,
2730 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2731 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2735 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2736 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2737 [-no-mul-bug-abort], [.text],,
2738 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2739 [Define if your assembler supports the -no-mul-bug-abort option.])])
2743 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2744 [.register %g2, #scratch],,
2745 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2746 [Define if your assembler supports .register.])])
2748 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2750 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2751 [Define if your assembler supports -relax option.])])
2753 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2754 gcc_cv_as_sparc_ua_pcrel,,
2762 .uaword %r_disp32(foo)],
2763 [if test x$gcc_cv_ld != x \
2764 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2765 gcc_cv_as_sparc_ua_pcrel=yes
2768 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2769 [Define if your assembler and linker support unaligned PC relative relocs.])
2771 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2772 gcc_cv_as_sparc_ua_pcrel_hidden,,
2777 .uaword %r_disp32(foo)
2778 .byte 0x32, 0x33, 0x34
2783 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2784 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2785 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2786 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2787 if $gcc_cv_objdump -R conftest 2> /dev/null \
2788 | grep 'DISP32' > /dev/null 2>&1; then
2791 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2795 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2796 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2797 ]) # unaligned pcrel relocs
2799 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2800 gcc_cv_as_sparc_offsetable_lo10,,
2803 or %g1, %lo(ab) + 12, %g1
2804 or %g1, %lo(ab + 12), %g1],
2805 [if test x$gcc_cv_objdump != x \
2806 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2807 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2808 gcc_cv_as_sparc_offsetable_lo10=yes
2810 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2811 [Define if your assembler supports offsetable %lo().])])
2815 i[34567]86-*-* | x86_64-*-*)
2818 cygwin* | pe | mingw32*)
2819 # Used for DWARF 2 in PE
2820 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2821 gcc_cv_as_ix86_pe_secrel32,
2827 [if test x$gcc_cv_ld != x \
2828 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2829 gcc_cv_as_ix86_pe_secrel32=yes
2832 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2833 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2837 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2838 gcc_cv_as_ix86_filds_fists,
2839 [2,9,0],, [filds mem; fists mem],,
2840 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2841 [Define if your assembler uses the new HImode fild and fist notation.])])
2843 gcc_GAS_CHECK_FEATURE([cmov syntax],
2844 gcc_cv_as_ix86_cmov_sun_syntax,,,
2845 [cmovl.l %edx, %eax],,
2846 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2847 [Define if your assembler supports the Sun syntax for cmov.])])
2849 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2850 gcc_cv_as_ix86_ffreep,,,
2852 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2853 [Define if your assembler supports the ffreep mnemonic.])])
2855 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2856 gcc_cv_as_ix86_sahf,,,
2858 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2859 [Define if your assembler supports the sahf mnemonic.])])
2861 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2862 gcc_cv_as_ix86_diff_sect_delta,,,
2870 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2871 [Define if your assembler supports the subtraction of symbols in different sections.])])
2873 # This one is used unconditionally by i386.[ch]; it is to be defined
2874 # to 1 if the feature is present, 0 otherwise.
2875 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2876 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2882 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2883 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2884 [Define true if the assembler supports '.long foo@GOTOFF'.])
2888 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2889 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2891 addl r15 = @ltoffx(x#), gp
2893 ld8.mov r16 = [[r15]], x#],,
2894 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2895 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2901 *-*-aix*) conftest_s=' .machine "pwr5"
2905 gcc_GAS_CHECK_FEATURE([.machine directive support],
2906 gcc_cv_as_machine_directive,,,
2907 [ .machine ppc7400])
2908 if test x$gcc_cv_as_machine_directive != xyes; then
2909 echo "*** This target requires an assembler supporting \".machine\"" >&2
2910 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2911 test x$build = x$target && exit 1
2915 *) conftest_s=' .machine power4
2920 gcc_GAS_CHECK_FEATURE([mfcr field support],
2921 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2923 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2924 [Define if your assembler supports mfcr field.])])
2927 *-*-aix*) conftest_s=' .machine "pwr5"
2930 *) conftest_s=' .machine power5
2935 gcc_GAS_CHECK_FEATURE([popcntb support],
2936 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2938 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2939 [Define if your assembler supports popcntb field.])])
2942 *-*-aix*) conftest_s=' .machine "pwr5x"
2945 *) conftest_s=' .machine power5
2950 gcc_GAS_CHECK_FEATURE([fp round support],
2951 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2953 [AC_DEFINE(HAVE_AS_FPRND, 1,
2954 [Define if your assembler supports fprnd.])])
2957 *-*-aix*) conftest_s=' .machine "pwr6"
2960 *) conftest_s=' .machine power6
2965 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2966 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2968 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2969 [Define if your assembler supports mffgpr and mftgpr.])])
2972 *-*-aix*) conftest_s=' .csect .text[[PR]]
2974 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2978 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2979 *) conftest_s=' .text
2981 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2984 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2985 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2987 [AC_DEFINE(HAVE_AS_REL16, 1,
2988 [Define if your assembler supports R_PPC_REL16 relocs.])])
2991 *-*-aix*) conftest_s=' .machine "pwr6"
2994 *) conftest_s=' .machine power6
2999 gcc_GAS_CHECK_FEATURE([compare bytes support],
3000 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3002 [AC_DEFINE(HAVE_AS_CMPB, 1,
3003 [Define if your assembler supports cmpb.])])
3006 *-*-aix*) conftest_s=' .machine "pwr6"
3009 *) conftest_s=' .machine power6
3014 gcc_GAS_CHECK_FEATURE([decimal float support],
3015 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3017 [AC_DEFINE(HAVE_AS_DFP, 1,
3018 [Define if your assembler supports DFP instructions.])])
3022 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3023 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3024 [ lw $4,%gp_rel(foo)($4)],,
3025 [if test x$target_cpu_default = x
3026 then target_cpu_default=MASK_EXPLICIT_RELOCS
3027 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3029 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3030 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3031 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3032 [Define if the assembler understands -mno-shared.])])
3036 # Mips and HP-UX need the GNU assembler.
3037 # Linux on IA64 might be able to use the Intel assembler.
3040 mips*-*-* | *-*-hpux* )
3041 if test x$gas_flag = xyes \
3042 || test x"$host" != x"$build" \
3043 || test ! -x "$gcc_cv_as" \
3044 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3047 echo "*** This configuration requires the GNU assembler" >&2
3053 # ??? Not all targets support dwarf2 debug_line, even within a version
3054 # of gas. Moreover, we need to emit a valid instruction to trigger any
3055 # info to the output file. So, as supported targets are added to gas 2.11,
3056 # add some instruction here to (also) show we expect this might work.
3057 # ??? Once 2.11 is released, probably need to add first known working
3058 # version to the per-target configury.
3060 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3061 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3062 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3065 ia64*-*-* | s390*-*-*)
3072 if test x"$insn" != x; then
3074 .file 1 \"conftest.s\"
3077 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3078 gcc_cv_as_dwarf2_debug_line,
3079 [elf,2,11,0],, [$conftest_s],
3080 [if test x$gcc_cv_objdump != x \
3081 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3082 | grep debug_line > /dev/null 2>&1; then
3083 gcc_cv_as_dwarf2_debug_line=yes
3086 # The .debug_line file table must be in the exact order that
3087 # we specified the files, since these indices are also used
3088 # by DW_AT_decl_file. Approximate this test by testing if
3089 # the assembler bitches if the same index is assigned twice.
3090 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3091 gcc_cv_as_dwarf2_file_buggy,,,
3095 if test $gcc_cv_as_dwarf2_debug_line = yes \
3096 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3097 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3098 [Define if your assembler supports dwarf2 .file/.loc directives,
3099 and preserves file table indices exactly as given.])
3102 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3103 gcc_cv_as_gdwarf2_flag,
3104 [elf,2,11,0], [--gdwarf2], [$insn],,
3105 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3106 [Define if your assembler supports the --gdwarf2 option.])])
3108 gcc_GAS_CHECK_FEATURE([--gstabs option],
3109 gcc_cv_as_gstabs_flag,
3110 [elf,2,11,0], [--gstabs], [$insn],
3111 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3112 # and warns about it, but still exits successfully. So check for
3114 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3116 else gcc_cv_as_gstabs_flag=yes
3118 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3119 [Define if your assembler supports the --gstabs option.])])
3122 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3123 [gcc_cv_as_line_zero],
3124 [gcc_cv_as_line_zero=no
3125 if test $in_tree_gas = yes; then
3126 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3127 elif test "x$gcc_cv_as" != x; then
3128 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3129 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3130 test "x`cat conftest.out`" = x
3132 gcc_cv_as_line_zero=yes
3134 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3135 cat conftest.s >&AS_MESSAGE_LOG_FD
3136 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3137 cat conftest.out >&AS_MESSAGE_LOG_FD
3139 rm -f conftest.o conftest.s conftest.out
3141 if test "x$gcc_cv_as_line_zero" = xyes; then
3142 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3143 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3146 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3147 gcc_cv_ld_ro_rw_mix=unknown
3148 if test $in_tree_ld = yes ; then
3149 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3150 && test $in_tree_ld_is_elf = yes; then
3151 gcc_cv_ld_ro_rw_mix=read-write
3153 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3154 echo '.section myfoosect, "a"' > conftest1.s
3155 echo '.section myfoosect, "aw"' > conftest2.s
3156 echo '.byte 1' >> conftest2.s
3157 echo '.section myfoosect, "a"' > conftest3.s
3158 echo '.byte 0' >> conftest3.s
3159 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3160 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3161 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3162 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3163 conftest2.o conftest3.o > /dev/null 2>&1; then
3164 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3165 | sed -e '/myfoosect/!d' -e N`
3166 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3167 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3168 gcc_cv_ld_ro_rw_mix=read-only
3170 gcc_cv_ld_ro_rw_mix=read-write
3175 rm -f conftest.* conftest[123].*
3178 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3179 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3180 [Define if your linker links a mix of read-only
3181 and read-write sections into a read-write section.])
3183 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3185 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3186 gcc_cv_ld_eh_frame_hdr=no
3187 if test $in_tree_ld = yes ; then
3188 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3189 && test $in_tree_ld_is_elf = yes; then
3190 gcc_cv_ld_eh_frame_hdr=yes
3192 elif test x$gcc_cv_ld != x; then
3193 # Check if linker supports --eh-frame-hdr option
3194 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3195 gcc_cv_ld_eh_frame_hdr=yes
3198 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3199 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3200 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3201 [Define if your linker supports --eh-frame-hdr option.])
3203 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3205 AC_MSG_CHECKING(linker position independent executable support)
3207 if test $in_tree_ld = yes ; then
3208 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3209 && test $in_tree_ld_is_elf = yes; then
3212 elif test x$gcc_cv_ld != x; then
3213 # Check if linker supports -pie option
3214 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3218 if test x"$gcc_cv_ld_pie" = xyes; then
3219 AC_DEFINE(HAVE_LD_PIE, 1,
3220 [Define if your linker supports -pie option.])
3222 AC_MSG_RESULT($gcc_cv_ld_pie)
3224 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3225 gcc_cv_ld_eh_gc_sections=no
3226 if test $in_tree_ld = yes ; then
3227 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3228 && test $in_tree_ld_is_elf = yes; then
3229 gcc_cv_ld_eh_gc_sections=yes
3231 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3232 cat > conftest.s <<EOF
3235 .type _start, @function
3238 .size _start, .-_start
3239 .section .text.foo,"ax",@progbits
3240 .type foo, @function
3244 .section .gcc_except_table.foo,"a",@progbits
3247 .section .eh_frame,"a",@progbits
3250 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3251 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3252 | grep "gc-sections option ignored" > /dev/null; then
3253 gcc_cv_ld_eh_gc_sections=no
3254 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3255 gcc_cv_ld_eh_gc_sections=yes
3256 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3257 if test x$gcc_cv_as_comdat_group != xyes; then
3258 gcc_cv_ld_eh_gc_sections=no
3259 cat > conftest.s <<EOF
3262 .type _start, @function
3265 .size _start, .-_start
3266 .section .gnu.linkonce.t.foo,"ax",@progbits
3267 .type foo, @function
3271 .section .gcc_except_table.foo,"a",@progbits
3274 .section .eh_frame,"a",@progbits
3277 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3278 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3279 | grep "gc-sections option ignored" > /dev/null; then
3280 gcc_cv_ld_eh_gc_sections=no
3281 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3282 gcc_cv_ld_eh_gc_sections=yes
3288 rm -f conftest.s conftest.o conftest
3292 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3293 gcc_cv_ld_eh_gc_sections=no
3296 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3297 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3298 [Define if your linker supports garbage collection of
3299 sections in presence of EH frames.])
3301 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3307 AC_CACHE_CHECK(linker --as-needed support,
3308 gcc_cv_ld_as_needed,
3309 [gcc_cv_ld_as_needed=no
3310 if test $in_tree_ld = yes ; then
3311 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3312 && test $in_tree_ld_is_elf = yes; then
3313 gcc_cv_ld_as_needed=yes
3315 elif test x$gcc_cv_ld != x; then
3316 # Check if linker supports --as-needed and --no-as-needed options
3317 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3318 gcc_cv_ld_as_needed=yes
3322 if test x"$gcc_cv_ld_as_needed" = xyes; then
3323 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3324 [Define if your linker supports --as-needed and --no-as-needed options.])
3327 case "$target:$tm_file" in
3328 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3329 AC_CACHE_CHECK(linker support for omitting dot symbols,
3330 gcc_cv_ld_no_dot_syms,
3331 [gcc_cv_ld_no_dot_syms=no
3332 if test $in_tree_ld = yes ; then
3333 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3334 gcc_cv_ld_no_dot_syms=yes
3336 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3337 cat > conftest1.s <<EOF
3341 cat > conftest2.s <<EOF
3342 .section ".opd","aw"
3347 .quad .LEfoo,.TOC.@tocbase,0
3353 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3354 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3355 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3356 gcc_cv_ld_no_dot_syms=yes
3358 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3361 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3362 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3363 [Define if your PowerPC64 linker only needs function descriptor syms.])
3368 AC_CACHE_CHECK(linker --sysroot support,
3370 [gcc_cv_ld_sysroot=no
3371 if test $in_tree_ld = yes ; then
3372 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3373 gcc_cv_ld_sysroot=yes
3375 elif test x$gcc_cv_ld != x; then
3376 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3377 gcc_cv_ld_sysroot=yes
3380 if test x"$gcc_cv_ld_sysroot" = xyes; then
3381 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3382 [Define if your linker supports --sysroot.])
3385 if test x$with_sysroot = x && test x$host = x$target \
3386 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3387 && test "$prefix" != "NONE"; then
3388 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3389 [Define to PREFIX/include if cpp should also search that directory.])
3392 # Test for stack protector support in target C library.
3393 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3394 gcc_cv_libc_provides_ssp,
3395 [gcc_cv_libc_provides_ssp=no
3398 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3399 if test "x$with_sysroot" = x; then
3400 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3401 elif test "x$with_build_sysroot" != "x"; then
3402 glibc_header_dir="${with_build_sysroot}/usr/include"
3403 elif test "x$with_sysroot" = xyes; then
3404 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3406 glibc_header_dir="${with_sysroot}/usr/include"
3409 glibc_header_dir=/usr/include
3411 # glibc 2.4 and later provides __stack_chk_fail and
3412 # either __stack_chk_guard, or TLS access to stack guard canary.
3413 if test -f $glibc_header_dir/features.h \
3414 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3415 $glibc_header_dir/features.h > /dev/null; then
3416 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3417 $glibc_header_dir/features.h > /dev/null; then
3418 gcc_cv_libc_provides_ssp=yes
3419 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3420 $glibc_header_dir/features.h > /dev/null \
3421 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3422 $glibc_header_dir/features.h > /dev/null; then
3423 gcc_cv_libc_provides_ssp=yes
3428 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3429 [echo "no __stack_chk_fail on this target"])
3431 *) gcc_cv_libc_provides_ssp=no ;;
3434 if test x$gcc_cv_libc_provides_ssp = xyes; then
3435 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3436 [Define if your target C library provides stack protector support])
3439 # Check if TFmode long double should be used by default or not.
3440 # Some glibc targets used DFmode long double, but with glibc 2.4
3441 # and later they can use TFmode.
3443 powerpc*-*-linux* | \
3448 AC_ARG_WITH(long-double-128,
3449 [ --with-long-double-128 Use 128-bit long double by default.],
3450 gcc_cv_target_ldbl128="$with_long_double_128",
3451 [gcc_cv_target_ldbl128=no
3452 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3453 if test "x$with_sysroot" = x; then
3454 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3455 elif test "x$with_build_sysroot" != "x"; then
3456 glibc_header_dir="${with_build_sysroot}/usr/include"
3457 elif test "x$with_sysroot" = xyes; then
3458 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3460 glibc_header_dir="${with_sysroot}/usr/include"
3463 glibc_header_dir=/usr/include
3466 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3467 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3468 && gcc_cv_target_ldbl128=yes
3473 if test x$gcc_cv_target_ldbl128 = xyes; then
3474 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3475 [Define if TFmode long double should be the default])
3478 # Find out what GC implementation we want, or may, use.
3480 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3488 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3491 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3496 echo "Using $GGC for garbage collection."
3498 # Use the system's zlib library.
3500 zlibinc="-I\$(srcdir)/../zlib"
3501 AC_ARG_WITH(system-zlib,
3502 [ --with-system-zlib use installed libz],
3509 dnl Very limited version of automake's enable-maintainer-mode
3511 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3512 dnl maintainer-mode is disabled by default
3513 AC_ARG_ENABLE(maintainer-mode,
3514 [ --enable-maintainer-mode
3515 enable make rules and dependencies not useful
3516 (and sometimes confusing) to the casual installer],
3517 maintainer_mode=$enableval,
3520 AC_MSG_RESULT($maintainer_mode)
3522 if test "$maintainer_mode" = "yes"; then
3533 # Make empty files to contain the specs and options for each language.
3534 # Then add #include lines to for a compiler that has specs and/or options.
3540 # These (without "all_") are set in each config-lang.in.
3541 # `language' must be a single word so is spelled singularly.
3544 all_outputs='Makefile gccbug libada-mk'
3545 # List of language makefile fragments.
3547 # List of language subdirectory makefiles. Deprecated.
3549 # Additional files for gengtype
3550 all_gtfiles="$target_gtfiles"
3552 # These are the languages that are set in --enable-languages,
3553 # and are available in the GCC tree.
3554 all_selected_languages=
3556 # Add the language fragments.
3557 # Languages are added via two mechanisms. Some information must be
3558 # recorded in makefile variables, these are defined in config-lang.in.
3559 # We accumulate them and plug them into the main Makefile.
3560 # The other mechanism is a set of hooks for each of the main targets
3561 # like `clean', `install', etc.
3563 language_hooks="Make-hooks"
3565 for lang in ${srcdir}/*/config-lang.in
3568 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3570 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3571 if test "x$lang_alias" = x
3573 echo "$lang doesn't set \$language." 1>&2
3576 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3577 subdirs="$subdirs $subdir"
3578 case ",$enable_languages," in
3580 all_selected_languages="$all_selected_languages $lang_alias"
3581 if test -f $srcdir/$subdir/lang-specs.h; then
3582 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3594 . ${srcdir}/$subdir/config-lang.in
3595 if test "x$language" = x
3597 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3602 case ",$enable_languages," in
3605 for i in $subdir_requires; do
3606 test -f "${srcdir}/$i/config-lang.in" && continue
3614 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3615 if test -f $srcdir/$subdir/lang.opt; then
3616 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3618 if test -f $srcdir/$subdir/$subdir-tree.def; then
3619 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3621 if test -f ${srcdir}/$subdir/Makefile.in
3622 then all_lang_makefiles="$subdir/Makefile"
3624 all_languages="$all_languages $language"
3625 all_compilers="$all_compilers $compilers"
3626 all_outputs="$all_outputs $outputs"
3627 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3630 # Pick up gtfiles for c
3632 . ${srcdir}/c-config-lang.in
3633 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3636 for language in $all_selected_languages
3638 check_languages="$check_languages check-$language"
3641 # We link each language in with a set of hooks, reached indirectly via
3642 # lang.${target}. Only do so for selected languages.
3646 target_list="all.cross start.encap rest.encap tags \
3647 install-common install-man install-info install-pdf dvi pdf \
3648 html uninstall info man srcextra srcman srcinfo \
3649 mostlyclean clean distclean maintainer-clean"
3651 for t in $target_list
3654 for lang in $all_selected_languages
3658 echo "lang.$t: $x" >> Make-hooks
3667 echo "dir ." > .gdbinit
3668 echo "dir ${srcdir}" >> .gdbinit
3669 if test x$gdb_needs_out_file_path = xyes
3671 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3673 if test "x$subdirs" != x; then
3676 echo "dir ${srcdir}/$s" >> .gdbinit
3679 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3681 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3682 # absolute path for gcc_tooldir based on inserting the number of up-directory
3683 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3684 # $(libsubdir)/@(unlibsubdir) based path.
3685 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3686 # make and thus we'd get different behavior depending on where we built the
3688 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3689 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3691 changequote(<<, >>)dnl
3692 # An explanation of the sed strings:
3693 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3694 # -e 's|/$||' match a trailing forward slash and eliminates it
3695 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3696 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3698 # (*) Note this pattern overwrites the first character of the string
3699 # with a forward slash if one is not already present. This is not a
3700 # problem because the exact names of the sub-directories concerned is
3701 # unimportant, just the number of them matters.
3703 # The practical upshot of these patterns is like this:
3705 # prefix exec_prefix result
3706 # ------ ----------- ------
3708 # /foo/ /foo/bar ../
3709 # /foo /foo/bar/ ../
3710 # /foo/ /foo/bar/ ../
3711 # /foo /foo/bar/ugg ../../
3714 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3715 changequote([, ])dnl
3717 AC_SUBST(gcc_tooldir)
3720 # Find a directory in which to install a shared libgcc.
3722 AC_ARG_ENABLE(version-specific-runtime-libs,
3723 [ --enable-version-specific-runtime-libs
3724 specify that runtime libraries should be
3725 installed in a compiler-specific directory])
3727 AC_ARG_WITH(slibdir,
3728 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3729 slibdir="$with_slibdir",
3730 if test "${enable_version_specific_runtime_libs+set}" = set; then
3731 slibdir='$(libsubdir)'
3732 elif test "$host" != "$target"; then
3733 slibdir='$(build_tooldir)/lib'
3739 objdir=`${PWDCMD-pwd}`
3742 AC_ARG_WITH(datarootdir,
3743 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3744 datarootdir="\${prefix}/$with_datarootdir",
3745 datarootdir='$(prefix)/share')
3746 AC_SUBST(datarootdir)
3749 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3750 docdir="\${prefix}/$with_docdir",
3751 docdir='$(datarootdir)')
3754 AC_ARG_WITH(htmldir,
3755 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3756 htmldir="\${prefix}/$with_htmldir",
3757 htmldir='$(docdir)')
3760 # Substitute configuration variables
3763 AC_SUBST(all_compilers)
3764 AC_SUBST(all_gtfiles)
3765 AC_SUBST(all_lang_makefrags)
3766 AC_SUBST(all_lang_makefiles)
3767 AC_SUBST(all_languages)
3768 AC_SUBST(all_selected_languages)
3769 AC_SUBST(build_exeext)
3770 AC_SUBST(build_install_headers_dir)
3771 AC_SUBST(build_xm_file_list)
3772 AC_SUBST(build_xm_include_list)
3773 AC_SUBST(build_xm_defines)
3774 AC_SUBST(check_languages)
3775 AC_SUBST(cpp_install_dir)
3776 AC_SUBST(xmake_file)
3777 AC_SUBST(tmake_file)
3778 AC_SUBST(extra_gcc_objs)
3779 AC_SUBST(extra_headers_list)
3780 AC_SUBST(extra_objs)
3781 AC_SUBST(extra_parts)
3782 AC_SUBST(extra_passes)
3783 AC_SUBST(extra_programs)
3784 AC_SUBST(float_h_file)
3785 AC_SUBST(gcc_config_arguments)
3786 AC_SUBST(gcc_gxx_include_dir)
3787 AC_SUBST(host_exeext)
3788 AC_SUBST(host_xm_file_list)
3789 AC_SUBST(host_xm_include_list)
3790 AC_SUBST(host_xm_defines)
3791 AC_SUBST(out_host_hook_obj)
3793 AC_SUBST(lang_opt_files)
3794 AC_SUBST(lang_specs_files)
3795 AC_SUBST(lang_tree_files)
3796 AC_SUBST(local_prefix)
3798 AC_SUBST(objc_boehm_gc)
3800 AC_SUBST(out_object_file)
3801 AC_SUBST(thread_file)
3802 AC_SUBST(tm_file_list)
3803 AC_SUBST(tm_include_list)
3804 AC_SUBST(tm_defines)
3805 AC_SUBST(tm_p_file_list)
3806 AC_SUBST(tm_p_include_list)
3807 AC_SUBST(xm_file_list)
3808 AC_SUBST(xm_include_list)
3809 AC_SUBST(xm_defines)
3810 AC_SUBST(c_target_objs)
3811 AC_SUBST(cxx_target_objs)
3812 AC_SUBST(target_cpu_default)
3814 AC_SUBST_FILE(language_hooks)
3817 if test x${build} = x${host} ; then
3818 if test x${host} = x${target} ; then
3819 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3821 echo "Links are now set up to build a cross-compiler" 1>&2
3822 echo " from ${host} to ${target}." 1>&2
3825 if test x${host} = x${target} ; then
3826 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3827 echo " for ${target}." 1>&2
3829 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3830 echo " from ${host} to ${target}." 1>&2
3834 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3835 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3837 # Configure the subdirectories
3838 # AC_CONFIG_SUBDIRS($subdirs)
3840 # Create the Makefile
3841 # and configure language subdirectories
3842 AC_CONFIG_FILES($all_outputs)
3844 AC_CONFIG_COMMANDS([default],
3846 case ${CONFIG_HEADERS} in
3847 *auto-host.h:config.in*)
3850 # Make sure all the subdirs exist.
3851 for d in $subdirs doc build
3853 test -d $d || mkdir $d
3856 [subdirs='$subdirs'])