2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
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 strict1_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 $ac_cv_prog_cc_w_old_style_definition = yes ; then
371 strict1_warn="${strict1_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 $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
386 strict1_warn="${strict1_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${enable_werror_always} = xyes ; then
394 strict1_warn="${strict1_warn} -Werror"
398 AC_SUBST(strict1_warn)
400 # Get C++ compatibility warning flag, if supported.
402 [whether ${CC} accepts -Wc++-compat],
403 [ac_cv_prog_cc_w_cxx_compat],
404 [save_CFLAGS="$CFLAGS"
405 CFLAGS="-Wc++-compat"
406 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
407 [ac_cv_prog_cc_w_cxx_compat=yes],
408 [ac_cv_prog_cc_w_cxx_compat=no])
409 CFLAGS="$save_CFLAGS"
411 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
412 cxx_compat_warn="-Wc++-compat"
414 AC_SUBST(cxx_compat_warn)
417 # If the native compiler is GCC, we can enable warnings even in stage1.
418 # That's useful for people building cross-compilers, or just running a
421 if test "x$GCC" = "xyes"; then
422 warn_cflags='$(GCC_WARN_CFLAGS)'
424 AC_SUBST(warn_cflags)
426 # Enable -Werror in bootstrap stage2 and later.
428 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
431 AC_ARG_ENABLE(werror,
432 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
433 [if test x$is_release = x ; then
434 # Default to "yes" on development branches.
437 # Default to "no" on release branches.
440 if test x$enable_werror = xyes ; then
445 # Enable expensive internal checks
446 AC_ARG_ENABLE(checking,
447 [ --enable-checking[=LIST]
448 enable expensive run-time checks. With LIST,
449 enable only specific categories of checks.
450 Categories are: yes,no,all,none,release.
451 Flags are: assert,fold,gc,gcac,misc,
452 rtlflag,rtl,runtime,tree,valgrind.],
453 [ac_checking_flags="${enableval}"],[
454 # Determine the default checks.
455 if test x$is_release = x ; then
456 ac_checking_flags=yes
458 ac_checking_flags=release
464 ac_gc_always_collect=
467 ac_runtime_checking=1
469 ac_valgrind_checking=
470 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
471 for check in $ac_checking_flags
474 # these set all the flags to specific states
475 yes) ac_assert_checking=1 ; ac_checking=1 ;
476 ac_fold_checking= ; ac_gc_checking=1 ;
477 ac_gc_always_collect= ; ac_rtl_checking= ;
478 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
479 ac_tree_checking=1 ; ac_valgrind_checking= ;;
480 no|none) ac_assert_checking= ; ac_checking= ;
481 ac_fold_checking= ; ac_gc_checking= ;
482 ac_gc_always_collect= ; ac_rtl_checking= ;
483 ac_rtlflag_checking= ; ac_runtime_checking= ;
484 ac_tree_checking= ; ac_valgrind_checking= ;;
485 all) ac_assert_checking=1 ; ac_checking=1 ;
486 ac_fold_checking=1 ; ac_gc_checking=1 ;
487 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
488 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
489 ac_tree_checking=1 ; ac_valgrind_checking= ;;
490 release) ac_assert_checking=1 ; ac_checking= ;
491 ac_fold_checking= ; ac_gc_checking= ;
492 ac_gc_always_collect= ; ac_rtl_checking= ;
493 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
494 ac_tree_checking= ; ac_valgrind_checking= ;;
495 # these enable particular checks
496 assert) ac_assert_checking=1 ;;
497 fold) ac_fold_checking=1 ;;
498 gc) ac_gc_checking=1 ;;
499 gcac) ac_gc_always_collect=1 ;;
500 misc) ac_checking=1 ;;
501 rtl) ac_rtl_checking=1 ;;
502 rtlflag) ac_rtlflag_checking=1 ;;
503 runtime) ac_runtime_checking=1 ;;
504 tree) ac_tree_checking=1 ;;
505 valgrind) ac_valgrind_checking=1 ;;
506 *) AC_MSG_ERROR(unknown check category $check) ;;
512 if test x$ac_checking != x ; then
513 AC_DEFINE(ENABLE_CHECKING, 1,
514 [Define if you want more run-time sanity checks. This one gets a grab
515 bag of miscellaneous but relatively cheap checks.])
516 nocommon_flag=-fno-common
518 AC_SUBST(nocommon_flag)
519 if test x$ac_assert_checking != x ; then
520 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
521 [Define if you want assertions enabled. This is a cheap check.])
523 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
524 if test x$ac_runtime_checking != x ; then
525 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
526 [Define if you want runtime assertions enabled. This is a cheap check.])
528 if test x$ac_tree_checking != x ; then
529 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
530 [Define if you want all operations on trees (the basic data
531 structure of the front ends) to be checked for dynamic type safety
532 at runtime. This is moderately expensive. The tree browser debugging
533 routines will also be enabled by this option.
535 TREEBROWSER=tree-browser.o
537 AC_SUBST(TREEBROWSER)
538 if test x$ac_rtl_checking != x ; then
539 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
540 [Define if you want all operations on RTL (the basic data structure
541 of the optimizer and back end) to be checked for dynamic type safety
542 at runtime. This is quite expensive.])
544 if test x$ac_rtlflag_checking != x ; then
545 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
546 [Define if you want RTL flag accesses to be checked against the RTL
547 codes that are supported for each access macro. This is relatively
550 if test x$ac_gc_checking != x ; then
551 AC_DEFINE(ENABLE_GC_CHECKING, 1,
552 [Define if you want the garbage collector to do object poisoning and
553 other memory allocation checks. This is quite expensive.])
555 if test x$ac_gc_always_collect != x ; then
556 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
557 [Define if you want the garbage collector to operate in maximally
558 paranoid mode, validating the entire heap and collecting garbage at
559 every opportunity. This is extremely expensive.])
561 if test x$ac_fold_checking != x ; then
562 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
563 [Define if you want fold checked that it never destructs its argument.
564 This is quite expensive.])
566 valgrind_path_defines=
569 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
570 dnl # an if statement. This was the source of very frustrating bugs
571 dnl # in converting to autoconf 2.5x!
572 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
574 if test x$ac_valgrind_checking != x ; then
575 # It is certainly possible that there's valgrind but no valgrind.h.
576 # GCC relies on making annotations so we must have both.
577 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
578 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
579 [[#include <valgrind/memcheck.h>
580 #ifndef VALGRIND_DISCARD
581 #error VALGRIND_DISCARD not defined
583 [gcc_cv_header_valgrind_memcheck_h=yes],
584 [gcc_cv_header_valgrind_memcheck_h=no])
585 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
586 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
587 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
588 [[#include <memcheck.h>
589 #ifndef VALGRIND_DISCARD
590 #error VALGRIND_DISCARD not defined
592 [gcc_cv_header_memcheck_h=yes],
593 [gcc_cv_header_memcheck_h=no])
594 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
595 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
596 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
597 if test "x$valgrind_path" = "x" \
598 || (test $have_valgrind_h = no \
599 && test $gcc_cv_header_memcheck_h = no \
600 && test $gcc_cv_header_valgrind_memcheck_h = no); then
601 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
603 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
604 valgrind_command="$valgrind_path -q"
605 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
606 [Define if you want to run subprograms and generated programs
607 through valgrind (a memory checker). This is extremely expensive.])
608 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
609 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
610 [Define if valgrind's valgrind/memcheck.h header is installed.])
612 if test $gcc_cv_header_memcheck_h = yes; then
613 AC_DEFINE(HAVE_MEMCHECK_H, 1,
614 [Define if valgrind's memcheck.h header is installed.])
617 AC_SUBST(valgrind_path_defines)
618 AC_SUBST(valgrind_command)
620 AC_ARG_ENABLE(mapped-location,
621 [ --enable-mapped-location location_t is fileline integer cookie],,
622 enable_mapped_location=no)
624 if test "$enable_mapped_location" = yes ; then
625 AC_DEFINE(USE_MAPPED_LOCATION, 1,
626 [Define if location_t is fileline integer cookie.])
629 # Enable code coverage collection
630 AC_ARG_ENABLE(coverage,
631 [ --enable-coverage[=LEVEL]
632 enable compiler's code coverage collection.
633 Use to measure compiler performance and locate
634 unused parts of the compiler. With LEVEL, specify
635 optimization. Values are opt, noopt,
637 [case "${enableval}" in
639 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
642 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
645 # a.k.a. --disable-coverage
649 AC_MSG_ERROR(unknown coverage setting $enableval)
653 AC_SUBST(coverage_flags)
655 AC_ARG_ENABLE(gather-detailed-mem-stats,
656 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
657 [enable_gather_detailed_mem_stats=no])
658 if test x$enable_gather_detailed_mem_stats = xyes ; then
659 AC_DEFINE(GATHER_STATISTICS, 1,
660 [Define to enable detailed memory allocation stats gathering.])
663 # -------------------------------
664 # Miscenalleous configure options
665 # -------------------------------
669 [ --with-stabs arrange to use stabs instead of host debug format],
673 # Determine whether or not multilibs are enabled.
674 AC_ARG_ENABLE(multilib,
675 [ --enable-multilib enable library support for multiple ABIs],
676 [], [enable_multilib=yes])
677 AC_SUBST(enable_multilib)
679 # Enable __cxa_atexit for C++.
680 AC_ARG_ENABLE(__cxa_atexit,
681 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
684 # Enable C extension for decimal float if target supports it.
685 AC_ARG_ENABLE(decimal-float,
686 [ --enable-decimal-float enable decimal float extension to C],
688 if test x$enablevar = xyes ; then
690 powerpc*-*-linux* | i?86*-*-linux*)
691 enable_decimal_float=yes
694 AC_MSG_WARN(decimal float is not supported for this target, ignored)
695 enable_decimal_float=no
699 ], [enable_decimal_float=no])
701 AC_SUBST(enable_decimal_float)
703 dfp=`if test $enable_decimal_float = yes; then echo 1; else echo 0; fi`
704 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
705 [Define to 1 to enable decimal float extension to C.])
708 # Pass with no value to take the default
709 # Pass with a value to specify a thread package
710 AC_ARG_ENABLE(threads,
711 [ --enable-threads enable thread usage for target GCC
712 --enable-threads=LIB use LIB thread package for target GCC],,
716 [ --enable-tls enable or disable generation of tls code
717 overriding the assembler check for tls support],
721 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
722 Valid choices are 'yes' and 'no'.]) ;;
726 AC_ARG_ENABLE(objc-gc,
727 [ --enable-objc-gc enable the use of Boehm's garbage collector with
728 the GNU Objective-C runtime],
729 if test x$enable_objc_gc = xno; then
737 [ --with-dwarf2 force the default debug format to be DWARF 2],
738 dwarf2="$with_dwarf2",
741 AC_ARG_ENABLE(shared,
742 [ --disable-shared don't provide a shared libgcc],
744 case $enable_shared in
748 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
749 for pkg in $enableval; do
750 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
757 ], [enable_shared=yes])
758 AC_SUBST(enable_shared)
760 AC_ARG_WITH(build-sysroot,
761 [ --with-build-sysroot=sysroot
762 use sysroot as the system root during the build])
765 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
767 case ${with_sysroot} in
768 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
769 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
772 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
773 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
775 if test "x$exec_prefix" = xNONE; then
776 if test "x$prefix" = xNONE; then
777 test_prefix=/usr/local
782 test_prefix=$exec_prefix
784 case ${TARGET_SYSTEM_ROOT} in
785 "${test_prefix}"|"${test_prefix}/"*|\
786 '${exec_prefix}'|'${exec_prefix}/'*)
787 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
788 TARGET_SYSTEM_ROOT_DEFINE="$t"
793 TARGET_SYSTEM_ROOT_DEFINE=
794 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
796 AC_SUBST(TARGET_SYSTEM_ROOT)
797 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
798 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
800 # Build with intermodule optimisations
801 AC_ARG_ENABLE(intermodule,
802 [ --enable-intermodule build the compiler in one step],
803 [case ${enable_intermodule} in
804 yes) onestep="-onestep";;
810 # Sanity check enable_languages in case someone does not run the toplevel
811 # configure # script.
812 AC_ARG_ENABLE(languages,
813 [ --enable-languages=LIST specify which front-ends to build],
814 [case ,${enable_languages}, in
816 # go safe -- we cannot be much sure without the toplevel
818 # analysis of which target libs are present and usable
822 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
827 enable_languages=c,${enable_languages}
830 [enable_languages=c])
832 # Used by documentation targets
833 AC_SUBST(datarootdir)
837 # -------------------------
838 # Checks for other programs
839 # -------------------------
843 # Find some useful tools
845 # We need awk to create options.c and options.h.
846 # Bail out if it's missing.
848 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
856 # By default, the Darwin ranlib will not treat common symbols as
857 # definitions when building the archive table of contents. Other
858 # ranlibs do that; pass an option to the Darwin ranlib that makes
859 # it behave similarly.
865 AC_SUBST(ranlib_flags)
869 # See if cmp has --ignore-initial.
870 gcc_AC_PROG_CMP_IGNORE_INITIAL
872 # See if we have the mktemp command.
873 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
875 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
877 # See if makeinfo has been installed and is modern enough
878 # that we can use it.
879 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
880 [GNU texinfo.* \([0-9][0-9.]*\)],
882 if test $gcc_cv_prog_makeinfo_modern = no; then
883 MAKEINFO="$MISSING makeinfo"
885 *** Makeinfo is missing or too old.
886 *** Info documentation will not be built.])
893 # Is pod2man recent enough to regenerate manpages?
894 AC_MSG_CHECKING([for recent Pod::Man])
895 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
897 GENERATED_MANPAGES=generated-manpages
902 AC_SUBST(GENERATED_MANPAGES)
905 dnl Don't use AC_PROG_LEX; we insist on flex.
906 dnl LEXLIB is not useful in gcc.
907 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
910 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
912 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
913 # check for build == host before using them.
916 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
917 && test -d ../binutils ; then
918 NM='$(objdir)/../binutils/nm-new'
920 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
924 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
925 && test -d ../binutils ; then
926 AR='$(objdir)/../binutils/ar'
928 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
932 # --------------------
933 # Checks for C headers
934 # --------------------
936 AC_MSG_CHECKING(for GNU C library)
937 AC_CACHE_VAL(gcc_cv_glibc,
938 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
939 [[#include <features.h>]], [[
940 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
941 #error Not a GNU C library system
945 AC_MSG_RESULT($gcc_cv_glibc)
946 if test $gcc_cv_glibc = yes; then
947 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
950 # Need to reject headers which give warnings, so that the -Werror bootstrap
951 # works later. *sigh* This needs to come before all header checks.
958 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
959 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
960 sys/resource.h sys/param.h sys/times.h sys/stat.h \
961 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
963 # Check for thread headers.
964 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
965 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
967 # These tests can't be done till we know if we have limits.h.
975 # Stage specific cflags for build.
981 stage1_cflags="-Wa,-J"
987 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
988 # sources; use -no-cpp-precomp to get to GNU cpp.
989 # Apple's GCC has bugs in designated initializer handling, so disable
991 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
994 AC_SUBST(stage1_cflags)
996 # These libraries may be used by collect2.
997 # We may need a special search path to get them linked.
998 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1000 for libs in '' -lld -lmld \
1001 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1002 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1005 AC_TRY_LINK_FUNC(ldopen,
1006 [gcc_cv_collect2_libs="$libs"; break])
1009 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1010 case $gcc_cv_collect2_libs in
1012 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1014 AC_SUBST(COLLECT2_LIBS)
1016 # When building Ada code on Alpha, we need exc_resume which is usually in
1017 # -lexc. So test for it.
1020 AC_SEARCH_LIBS(exc_resume, exc)
1023 AC_SUBST(GNAT_LIBEXC)
1025 # Some systems put ldexp and frexp in libm instead of libc; assume
1026 # they're both in the same place. jcf-dump needs them.
1029 AC_SEARCH_LIBS(ldexp, m)
1034 # Use <inttypes.h> only if it exists,
1035 # doesn't clash with <sys/types.h>, and declares intmax_t.
1036 AC_MSG_CHECKING(for inttypes.h)
1037 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1038 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1039 [[#include <sys/types.h>
1040 #include <inttypes.h>]],
1041 [[intmax_t i = -1;]])],
1042 [gcc_cv_header_inttypes_h=yes],
1043 [gcc_cv_header_inttypes_h=no])])
1044 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1045 if test $gcc_cv_header_inttypes_h = yes; then
1046 AC_DEFINE(HAVE_INTTYPES_H, 1,
1047 [Define if you have a working <inttypes.h> header file.])
1050 dnl Disabled until we have a complete test for buggy enum bitfields.
1051 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1053 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1054 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1055 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1056 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1057 putchar_unlocked putc_unlocked)
1058 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1059 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1060 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1063 if test x$ac_cv_func_mbstowcs = xyes; then
1064 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1065 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1071 [gcc_cv_func_mbstowcs_works=yes],
1072 [gcc_cv_func_mbstowcs_works=no],
1073 [gcc_cv_func_mbstowcs_works=yes])])
1074 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1075 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1076 [Define this macro if mbstowcs does not crash when its
1077 first argument is NULL.])
1081 AC_CHECK_TYPE(ssize_t, int)
1083 # Try to determine the array type of the second argument of getgroups
1084 # for the target system (int or gid_t).
1086 if test "${target}" = "${build}"; then
1087 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1090 # This condition may need some tweaking. It should include all
1091 # targets where the array type of the second argument of getgroups
1092 # is int and the type of gid_t is not equivalent to int.
1093 *-*-sunos* | *-*-ultrix*)
1094 TARGET_GETGROUPS_T=int
1097 TARGET_GETGROUPS_T=gid_t
1101 AC_SUBST(TARGET_GETGROUPS_T)
1103 gcc_AC_FUNC_MMAP_BLACKLIST
1107 # Under VMS, vfork works very differently than on Unix. The standard test
1108 # won't work, and it isn't easily adaptable. It makes more sense to
1110 ac_cv_func_vfork_works=yes
1116 # Until we have in-tree GNU iconv:
1118 AC_SUBST(LIBICONV_DEP)
1124 # We will need to find libiberty.h and ansidecl.h
1125 saved_CFLAGS="$CFLAGS"
1126 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1127 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1128 strsignal strstr strverscmp \
1129 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1130 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1131 #include "ansidecl.h"
1132 #include "system.h"])
1134 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1135 #include "ansidecl.h"
1137 #ifdef HAVE_SYS_RESOURCE_H
1138 #include <sys/resource.h>
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_RESOURCE_H
1146 #include <sys/resource.h>
1148 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1149 [Define to \`long' if <sys/resource.h> doesn't define.])])
1151 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1152 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1153 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1154 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1155 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1156 #include "ansidecl.h"
1165 gcc_AC_CHECK_DECLS(times, , ,[
1166 #include "ansidecl.h"
1168 #ifdef HAVE_SYS_TIMES_H
1169 #include <sys/times.h>
1173 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1174 #include "ansidecl.h"
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190 [Define if <sys/times.h> defines struct tms.])
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201 AC_DEFINE(HAVE_CLOCK_T, 1,
1202 [Define if <time.h> defines clock_t.])
1205 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1206 CFLAGS="$saved_CFLAGS"
1208 gcc_AC_INITFINI_ARRAY
1210 # mkdir takes a single argument on some systems.
1211 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1219 # With Setjmp/Longjmp based exception handling.
1220 AC_ARG_ENABLE(sjlj-exceptions,
1221 [ --enable-sjlj-exceptions
1222 arrange to use setjmp/longjmp exception handling],
1223 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1224 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1225 [Define 0/1 to force the choice for exception handling model.])])
1227 # For platforms with the unwind ABI which includes an unwind library,
1228 # libunwind, we can choose to use the system libunwind.
1229 AC_ARG_WITH(system-libunwind,
1230 [ --with-system-libunwind use installed libunwind])
1232 # config.gcc also contains tests of with_system_libunwind.
1233 if test x$with_system_libunwind = xyes; then
1234 AC_DEFINE(HAVE_GETIPINFO, 1,
1235 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1238 # --------------------------------------------------------
1239 # Build, host, and target specific configuration fragments
1240 # --------------------------------------------------------
1242 # Collect build-machine-specific information.
1243 . ${srcdir}/config.build
1245 # Collect host-machine-specific information.
1246 . ${srcdir}/config.host
1250 # Collect target-machine-specific information.
1251 . ${srcdir}/config.gcc
1253 extra_objs="${host_extra_objs} ${extra_objs}"
1254 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1256 # Default the target-machine variables that were not explicitly set.
1257 if test x"$tm_file" = x
1258 then tm_file=$cpu_type/$cpu_type.h; fi
1260 if test x"$extra_headers" = x
1261 then extra_headers=; fi
1263 if test x$md_file = x
1264 then md_file=$cpu_type/$cpu_type.md; fi
1266 if test x$out_file = x
1267 then out_file=$cpu_type/$cpu_type.c; fi
1269 if test x"$tmake_file" = x
1270 then tmake_file=$cpu_type/t-$cpu_type
1273 if test x"$dwarf2" = xyes
1274 then tm_file="$tm_file tm-dwarf2.h"
1277 # Say what files are being used for the output code and MD file.
1278 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1279 echo "Using \`$srcdir/config/$md_file' as machine description file."
1281 # If any of the xm_file variables contain nonexistent files, warn
1282 # about them and drop them.
1285 for x in $build_xm_file; do
1286 if test -f $srcdir/config/$x
1288 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1294 for x in $host_xm_file; do
1295 if test -f $srcdir/config/$x
1297 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1303 for x in $xm_file; do
1304 if test -f $srcdir/config/$x
1306 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1312 for f in $tm_file; do
1315 if test $count = ax; then
1316 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1318 echo "Using the following target machine macro files:"
1319 for f in $tm_file; do
1320 echo " $srcdir/config/$f"
1324 if test x$need_64bit_hwint = xyes; then
1325 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1326 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1329 if test x$use_long_long_for_widest_fast_int = xyes; then
1330 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1331 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1332 efficiently supported by the host hardware.])
1336 for f in $host_xm_file; do
1339 if test $count = a; then
1341 elif test $count = ax; then
1342 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1344 echo "Using the following host machine macro files:"
1345 for f in $host_xm_file; do
1346 echo " $srcdir/config/$f"
1349 echo "Using ${out_host_hook_obj} for host machine hooks."
1351 if test "$host_xm_file" != "$build_xm_file"; then
1353 for f in $build_xm_file; do
1356 if test $count = a; then
1358 elif test $count = ax; then
1359 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1361 echo "Using the following build machine macro files:"
1362 for f in $build_xm_file; do
1363 echo " $srcdir/config/$f"
1370 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1371 gcc_cv_mcontext_underscores,
1373 #include <sys/signal.h>
1374 #include <ucontext.h>
1375 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1377 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1378 if test $gcc_cv_mcontext_underscores = yes; then
1379 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1380 [mcontext_t fields start with __])
1389 # Check if a valid thread package
1390 case ${enable_threads} in
1393 target_thread_file='single'
1397 target_thread_file='single'
1399 aix | dce | gnat | irix | posix | posix95 | rtems | \
1400 single | solaris | vxworks | win32 )
1401 target_thread_file=${enable_threads}
1404 echo "${enable_threads} is an unknown thread package" 1>&2
1409 if test x${thread_file} = x; then
1410 # No thread file set by target-specific clauses in config.gcc,
1411 # so use file chosen by default logic above
1412 thread_file=${target_thread_file}
1415 # Make gthr-default.h if we have a thread file.
1417 if test $thread_file != single; then
1418 rm -f gthr-default.h
1419 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1420 gthread_flags=-DHAVE_GTHR_DEFAULT
1422 AC_SUBST(gthread_flags)
1429 if test x$enable___cxa_atexit = xyes || \
1430 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1431 if test x$host = x$target; then
1433 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1434 # keyed to flag_use_cxa_atexit
1439 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1440 [echo "__cxa_atexit can't be enabled on this target"])
1444 # We can't check for __cxa_atexit when building a cross, so assume
1448 if test x$use_cxa_atexit = xyes; then
1449 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1450 [Define if you want to use __cxa_atexit, rather than atexit, to
1451 register C++ destructors for local statics and global objects.
1452 This is essential for fully standards-compliant handling of
1453 destructors, but requires __cxa_atexit in libc.])
1458 if test x$with_system_libunwind = xyes; then
1459 if test x$host = x$target; then
1460 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1463 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1464 if test x$use_getipinfo = xyes; then
1465 AC_DEFINE(HAVE_GETIPINFO, 1,
1466 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1468 echo "The system unwind library does not support _Unwind_GetIPInfo."
1471 # Look for a file containing extra machine modes.
1472 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1473 extra_modes_file='$(srcdir)'/config/${extra_modes}
1474 AC_SUBST(extra_modes_file)
1475 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1476 [Define to the name of a file containing a list of extra machine modes
1477 for this architecture.])
1480 # Convert extra_options into a form suitable for Makefile use.
1482 for f in $extra_options; do
1483 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1485 AC_SUBST(extra_opt_files)
1487 # auto-host.h is the file containing items generated by autoconf and is
1488 # the first file included by config.h.
1489 # If host=build, it is correct to have bconfig include auto-host.h
1490 # as well. If host!=build, we are in error and need to do more
1491 # work to find out the build config parameters.
1492 if test x$host = x$build
1494 build_auto=auto-host.h
1496 # We create a subdir, then run autoconf in the subdir.
1497 # To prevent recursion we set host and build for the new
1498 # invocation of configure to the build for this invocation
1505 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1506 *) realsrcdir=../${srcdir};;
1508 saved_CFLAGS="${CFLAGS}"
1509 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1510 ${realsrcdir}/configure \
1511 --enable-languages=${enable_languages-all} \
1512 --target=$target_alias --host=$build_alias --build=$build_alias
1513 CFLAGS="${saved_CFLAGS}"
1515 # We just finished tests for the build machine, so rename
1516 # the file auto-build.h in the gcc directory.
1517 mv auto-host.h ../auto-build.h
1520 build_auto=auto-build.h
1522 AC_SUBST(build_subdir)
1524 tm_file="${tm_file} defaults.h"
1525 tm_p_file="${tm_p_file} tm-preds.h"
1526 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1527 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1528 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1529 # put this back in temporarily.
1530 xm_file="auto-host.h ansidecl.h ${xm_file}"
1537 # Compile in configure arguments.
1538 if test -f configargs.h ; then
1539 # Being re-configured.
1540 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1541 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1543 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1546 # Double all backslashes and backslash all quotes to turn
1547 # gcc_config_arguments into a C string.
1548 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1549 $gcc_config_arguments
1551 gcc_config_arguments_str=`cat conftest.out`
1554 cat > configargs.h <<EOF
1555 /* Generated automatically. */
1556 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1557 static const char thread_model[] = "$thread_file";
1559 static const struct {
1560 const char *name, *value;
1561 } configure_default_options[] = $configure_default_options;
1565 # Internationalization
1566 ZW_GNU_GETTEXT_SISTER_DIR
1568 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1569 # -liconv on the link line twice.
1570 case "$LIBINTL" in *$LIBICONV*)
1574 AC_ARG_ENABLE(secureplt,
1575 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1578 # Windows32 Registry support for specifying GCC installation paths.
1579 AC_ARG_ENABLE(win32-registry,
1580 [ --disable-win32-registry
1581 disable lookup of installation paths in the
1582 Registry on Windows hosts
1583 --enable-win32-registry enable registry lookup (default)
1584 --enable-win32-registry=KEY
1585 use KEY instead of GCC version as the last portion
1586 of the registry key],,)
1589 win32 | pe | cygwin* | mingw32* | uwin*)
1590 if test "x$enable_win32_registry" != xno; then
1591 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1594 if test "x$enable_win32_registry" != xno; then
1595 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1596 [Define to 1 if installation paths should be looked up in the Windows
1597 Registry. Ignored on non-Windows hosts.])
1599 if test "x$enable_win32_registry" != xyes \
1600 && test "x$enable_win32_registry" != x; then
1601 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1602 [Define to be the last component of the Windows registry key under which
1603 to look for installation paths. The full key used will be
1604 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1605 The default is the GCC version number.])
1611 # Get an absolute path to the GCC top-level source directory
1612 holddir=`${PWDCMD-pwd}`
1614 topdir=`${PWDCMD-pwd}`
1617 # Conditionalize the makefile for this host machine.
1619 for f in ${host_xmake_file}
1621 if test -f ${srcdir}/config/$f
1623 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1627 # Conditionalize the makefile for this target machine.
1629 for f in ${tmake_file}
1631 if test -f ${srcdir}/config/$f
1633 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1636 tmake_file="${tmake_file_}"
1638 # If the host doesn't support symlinks, modify CC in
1639 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1640 # Otherwise, we can use "CC=$(CC)".
1644 cc_set_by_configure="\$(CC)"
1645 quoted_cc_set_by_configure="\$(CC)"
1646 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1647 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1650 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1651 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1652 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1653 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1657 # This is a terrible hack which will go away some day.
1658 host_cc_for_libada=${CC}
1659 AC_SUBST(host_cc_for_libada)
1661 out_object_file=`basename $out_file .c`.o
1663 tm_file_list="options.h"
1664 tm_include_list="options.h"
1665 for f in $tm_file; do
1668 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1669 tm_include_list="${tm_include_list} $f"
1672 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1673 tm_include_list="${tm_include_list} config/$f"
1680 for f in $tm_p_file; do
1683 tm_p_file_list="${tm_p_file_list} $f"
1684 tm_p_include_list="${tm_p_include_list} $f"
1687 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1688 tm_p_include_list="${tm_p_include_list} config/$f"
1694 for f in $xm_file; do
1697 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1698 xm_include_list="${xm_include_list} $f"
1701 xm_file_list="${xm_file_list} $f"
1702 xm_include_list="${xm_include_list} $f"
1705 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1706 xm_include_list="${xm_include_list} config/$f"
1712 host_xm_include_list=
1713 for f in $host_xm_file; do
1716 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1717 host_xm_include_list="${host_xm_include_list} $f"
1720 host_xm_file_list="${host_xm_file_list} $f"
1721 host_xm_include_list="${host_xm_include_list} $f"
1724 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1725 host_xm_include_list="${host_xm_include_list} config/$f"
1731 for f in $build_xm_file; do
1734 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1735 build_xm_include_list="${build_xm_include_list} $f"
1737 auto-build.h | auto-host.h )
1738 build_xm_file_list="${build_xm_file_list} $f"
1739 build_xm_include_list="${build_xm_include_list} $f"
1742 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1743 build_xm_include_list="${build_xm_include_list} config/$f"
1748 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1749 # cross-compiler which does not use the native headers and libraries.
1750 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1751 CROSS= AC_SUBST(CROSS)
1752 ALL=all.internal AC_SUBST(ALL)
1753 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1755 if test "x$with_build_sysroot" != x; then
1756 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1758 # This value is used, even on a native system, because
1759 # CROSS_SYSTEM_HEADER_DIR is just
1760 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1761 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1764 if test x$host != x$target
1766 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1768 SYSTEM_HEADER_DIR=$build_system_header_dir
1769 case "$host","$target" in
1770 # Darwin crosses can use the host system's libraries and headers,
1771 # because of the fat library support. Of course, it must be the
1772 # same version of Darwin on both sides. Allow the user to
1773 # just say --target=foo-darwin without a version number to mean
1774 # "the version on this system".
1775 *-*-darwin*,*-*-darwin*)
1776 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1777 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1778 if test $hostos = $targetos -o $targetos = darwin ; then
1780 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1785 i?86-*-*,x86_64-*-* \
1786 | powerpc*-*-*,powerpc64*-*-*)
1787 CROSS="$CROSS -DNATIVE_CROSS" ;;
1789 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1790 SYSTEM_HEADER_DIR=$build_system_header_dir
1793 # If this is a cross-compiler that does not
1794 # have its own set of headers then define
1797 # If this is using newlib, without having the headers available now,
1798 # then define inhibit_libc in LIBGCC2_CFLAGS.
1799 # This prevents libgcc2 from containing any code which requires libc
1802 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1803 test x$with_newlib = xyes ; } &&
1804 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1807 AC_SUBST(inhibit_libc)
1809 # When building gcc with a cross-compiler, we need to adjust things so
1810 # that the generator programs are still built with the native compiler.
1811 # Also, we cannot run fixincludes or fix-header.
1813 # These are the normal (build=host) settings:
1814 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1815 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1816 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1818 # Possibly disable fixproto, on a per-target basis.
1819 case ${use_fixproto} in
1824 STMP_FIXPROTO=stmp-fixproto
1827 AC_SUBST(STMP_FIXPROTO)
1829 # And these apply if build != host, or we are generating coverage data
1830 if test x$build != x$host || test "x$coverage_flags" != x
1832 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1834 if test "x$TARGET_SYSTEM_ROOT" = x; then
1835 if test "x$STMP_FIXPROTO" != x; then
1836 STMP_FIXPROTO=stmp-install-fixproto
1841 # Expand extra_headers to include complete path.
1842 # This substitutes for lots of t-* files.
1844 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1845 for file in ${extra_headers} ; do
1846 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1849 # Define collect2 in Makefile.
1850 case $host_can_use_collect2 in
1852 *) collect2='collect2$(exeext)' ;;
1854 AC_SUBST([collect2])
1856 # Add a definition of USE_COLLECT2 if system wants one.
1857 case $use_collect2 in
1858 no) use_collect2= ;;
1861 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1862 xm_defines="${xm_defines} USE_COLLECT2"
1863 case $host_can_use_collect2 in
1865 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1871 # ---------------------------
1872 # Assembler & linker features
1873 # ---------------------------
1875 # Identify the assembler which will work hand-in-glove with the newly
1876 # built GCC, so that we can examine its features. This is the assembler
1877 # which will be driven by the driver program.
1879 # If build != host, and we aren't building gas in-tree, we identify a
1880 # build->target assembler and hope that it will have the same features
1881 # as the host->target assembler we'll be using.
1882 gcc_cv_gas_major_version=
1883 gcc_cv_gas_minor_version=
1884 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1886 m4_pattern_allow([AS_FOR_TARGET])dnl
1887 AS_VAR_SET_IF(gcc_cv_as,, [
1888 if test -x "$DEFAULT_ASSEMBLER"; then
1889 gcc_cv_as="$DEFAULT_ASSEMBLER"
1890 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1891 && test -f ../gas/Makefile \
1892 && test x$build = x$host; then
1893 gcc_cv_as=../gas/as-new$build_exeext
1894 elif test -x as$build_exeext; then
1895 # Build using assembler in the current directory.
1896 gcc_cv_as=./as$build_exeext
1897 elif test -x $AS_FOR_TARGET; then
1898 gcc_cv_as="$AS_FOR_TARGET"
1900 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1903 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1904 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1906 AC_MSG_CHECKING(what assembler to use)
1907 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1908 # Single tree build which includes gas. We want to prefer it
1909 # over whatever linker top-level may have detected, since
1910 # we'll use what we're building after installation anyway.
1911 AC_MSG_RESULT(newly built gas)
1913 _gcc_COMPUTE_GAS_VERSION
1914 in_tree_gas_is_elf=no
1915 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1916 || (grep 'obj_format = multi' ../gas/Makefile \
1917 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1919 in_tree_gas_is_elf=yes
1922 AC_MSG_RESULT($gcc_cv_as)
1926 # Identify the linker which will work hand-in-glove with the newly
1927 # built GCC, so that we can examine its features. This is the linker
1928 # which will be driven by the driver program.
1930 # If build != host, and we aren't building gas in-tree, we identify a
1931 # build->target linker and hope that it will have the same features
1932 # as the host->target linker we'll be using.
1933 gcc_cv_gld_major_version=
1934 gcc_cv_gld_minor_version=
1935 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1936 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1938 AS_VAR_SET_IF(gcc_cv_ld,, [
1939 if test -x "$DEFAULT_LINKER"; then
1940 gcc_cv_ld="$DEFAULT_LINKER"
1941 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1942 && test -f ../ld/Makefile \
1943 && test x$build = x$host; then
1944 gcc_cv_ld=../ld/ld-new$build_exeext
1945 elif test -x collect-ld$build_exeext; then
1946 # Build using linker in the current directory.
1947 gcc_cv_ld=./collect-ld$build_exeext
1948 elif test -x $LD_FOR_TARGET; then
1949 gcc_cv_ld="$LD_FOR_TARGET"
1951 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1954 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1955 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1957 AC_MSG_CHECKING(what linker to use)
1958 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1959 # Single tree build which includes ld. We want to prefer it
1960 # over whatever linker top-level may have detected, since
1961 # we'll use what we're building after installation anyway.
1962 AC_MSG_RESULT(newly built ld)
1964 in_tree_ld_is_elf=no
1965 if (grep 'EMUL = .*elf' ../ld/Makefile \
1966 || grep 'EMUL = .*linux' ../ld/Makefile \
1967 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1968 in_tree_ld_is_elf=yes
1970 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
1973 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1974 if test x$gcc_cv_gld_version != x; then
1978 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1979 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1982 AC_MSG_RESULT($gcc_cv_ld)
1986 # Figure out what nm we will be using.
1987 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1988 AS_VAR_SET_IF(gcc_cv_nm,, [
1989 if test -f $gcc_cv_binutils_srcdir/configure.in \
1990 && test -f ../binutils/Makefile \
1991 && test x$build = x$host; then
1992 gcc_cv_nm=../binutils/nm-new$build_exeext
1993 elif test -x nm$build_exeext; then
1994 gcc_cv_nm=./nm$build_exeext
1995 elif test -x $NM_FOR_TARGET; then
1996 gcc_cv_nm="$NM_FOR_TARGET"
1998 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2001 AC_MSG_CHECKING(what nm to use)
2002 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2003 # Single tree build which includes binutils.
2004 AC_MSG_RESULT(newly built nm)
2007 AC_MSG_RESULT($gcc_cv_nm)
2011 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2012 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2014 # Figure out what objdump we will be using.
2015 AS_VAR_SET_IF(gcc_cv_objdump,, [
2016 if test -f $gcc_cv_binutils_srcdir/configure.in \
2017 && test -f ../binutils/Makefile \
2018 && test x$build = x$host; then
2019 # Single tree build which includes binutils.
2020 gcc_cv_objdump=../binutils/objdump$build_exeext
2021 elif test -x objdump$build_exeext; then
2022 gcc_cv_objdump=./objdump$build_exeext
2023 elif test -x $OBJDUMP_FOR_TARGET; then
2024 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2026 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2029 AC_MSG_CHECKING(what objdump to use)
2030 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2031 # Single tree build which includes binutils.
2032 AC_MSG_RESULT(newly built objdump)
2033 elif test x$gcc_cv_objdump = x; then
2034 AC_MSG_RESULT(not found)
2036 AC_MSG_RESULT($gcc_cv_objdump)
2039 # Figure out what assembler alignment features are present.
2040 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2044 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2045 [Define if your assembler supports .balign and .p2align.])])
2047 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2050 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2051 [Define if your assembler supports specifying the maximum number
2052 of bytes to skip when using the GAS .p2align command.])])
2054 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2057 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2058 [Define if your assembler supports .literal16.])])
2060 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2062 [conftest_label1: .word 0
2064 conftest_label2: .word 0
2066 [if test x$gcc_cv_nm != x; then
2067 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2068 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2069 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2071 else gcc_cv_as_subsection_m1=yes
2073 rm -f conftest.nm1 conftest.nm2
2075 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2076 [Define if your assembler supports .subsection and .subsection -1 starts
2077 emitting at the beginning of your section.])])
2079 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2082 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2084 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2086 [ .weakref foobar, barfnot],,
2087 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2089 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2092 .NSUBSPA $CODE$,COMDAT],,
2093 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2095 # .hidden needs to be supported in both the assembler and the linker,
2096 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2097 # This is irritatingly difficult to feature test for; we have to check the
2098 # date string after the version number. If we've got an in-tree
2099 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2101 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2102 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2107 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2108 [if test $in_tree_ld = yes ; then
2110 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2111 && test $in_tree_ld_is_elf = yes; then
2112 gcc_cv_ld_hidden=yes
2115 gcc_cv_ld_hidden=yes
2116 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2117 if echo "$ld_ver" | grep GNU > /dev/null; then
2119 ld_vers=`echo $ld_ver | sed -n \
2120 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2121 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2122 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2123 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2124 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2125 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2126 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2127 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2128 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2129 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2130 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2131 if test 0"$ld_date" -lt 20020404; then
2132 if test -n "$ld_date"; then
2133 # If there was date string, but was earlier than 2002-04-04, fail
2135 elif test -z "$ld_vers"; then
2136 # If there was no date string nor ld version number, something is wrong
2139 test -z "$ld_vers_patch" && ld_vers_patch=0
2140 if test "$ld_vers_major" -lt 2; then
2142 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2143 gcc_cv_ld_hidden="no"
2144 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2152 hppa64*-*-hpux* | ia64*-*-hpux*)
2153 gcc_cv_ld_hidden=yes
2161 libgcc_visibility=no
2162 AC_SUBST(libgcc_visibility)
2163 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2164 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2165 libgcc_visibility=yes
2166 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2167 [Define if your assembler and linker support .hidden.])
2170 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2171 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2179 [# GAS versions before 2.11 do not support uleb128,
2180 # despite appearing to.
2181 # ??? There exists an elf-specific test that will crash
2182 # the assembler. Perhaps it's better to figure out whether
2183 # arbitrary sections are supported and try the test.
2184 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2185 if echo "$as_ver" | grep GNU > /dev/null; then
2187 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2188 as_major=`echo $as_ver | sed 's/\..*//'`
2189 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2191 if test $as_major -eq 2 && test $as_minor -lt 11
2193 else gcc_cv_as_leb128=yes
2196 [AC_DEFINE(HAVE_AS_LEB128, 1,
2197 [Define if your assembler supports .sleb128 and .uleb128.])])
2199 # GAS versions up to and including 2.11.0 may mis-optimize
2201 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2209 .section .eh_frame,"aw",@progbits
2211 .4byte .LECIE1-.LSCIE1
2225 .4byte .LEFDE1-.LASFDE1
2227 .4byte .LASFDE1-__FRAME_BEGIN__
2235 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2236 cat > conftest.lit <<EOF
2237 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2238 0010 01000000 12000000 18000000 00000000 ................
2239 0020 08000000 04080000 0044 .........D @&t@
2241 cat > conftest.big <<EOF
2242 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2243 0010 00000001 00000012 00000018 00000000 ................
2244 0020 00000008 04000000 0844 .........D @&t@
2246 # If the assembler didn't choke, and we can objdump,
2247 # and we got the correct data, then succeed.
2248 # The text in the here-document typically retains its unix-style line
2249 # endings, while the output of objdump will use host line endings.
2250 # Therefore, use diff -b for the comparisons.
2251 if test x$gcc_cv_objdump != x \
2252 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2253 | tail -3 > conftest.got \
2254 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2255 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2257 gcc_cv_as_eh_frame=yes
2258 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2259 gcc_cv_as_eh_frame=buggy
2261 # Uh oh, what do we do now?
2262 gcc_cv_as_eh_frame=no
2265 if test $gcc_cv_as_eh_frame = buggy; then
2266 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2267 [Define if your assembler mis-optimizes .eh_frame data.])
2270 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2271 [elf,2,12,0], [--fatal-warnings],
2272 [.section .rodata.str, "aMS", @progbits, 1])
2273 if test $gcc_cv_as_shf_merge = no; then
2274 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2275 [elf,2,12,0], [--fatal-warnings],
2276 [.section .rodata.str, "aMS", %progbits, 1])
2278 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2279 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2280 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2282 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2283 [elf,2,16,0], [--fatal-warnings],
2284 [.section .text,"axG",@progbits,.foo,comdat])
2285 if test $gcc_cv_as_comdat_group = yes; then
2286 gcc_cv_as_comdat_group_percent=no
2288 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2289 [elf,2,16,0], [--fatal-warnings],
2290 [.section .text,"axG",%progbits,.foo,comdat])
2292 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2294 if test 0"$ld_date" -lt 20050308; then
2295 if test -n "$ld_date"; then
2296 # If there was date string, but was earlier than 2005-03-08, fail
2298 elif test "$ld_vers_major" -lt 2; then
2300 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2305 # assume linkers other than GNU ld don't support COMDAT group
2308 if test $comdat_group = no; then
2309 gcc_cv_as_comdat_group=no
2310 gcc_cv_as_comdat_group_percent=no
2312 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2313 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2314 [Define 0/1 if your assembler and linker support COMDAT groups.])
2316 # Thread-local storage - the check is heavily parametrized.
2325 .section ".tdata","awT",@progbits
2328 ldq $27,__tls_get_addr($29) !literal!1
2329 lda $16,foo($29) !tlsgd!1
2330 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2331 ldq $27,__tls_get_addr($29) !literal!2
2332 lda $16,foo($29) !tlsldm!2
2333 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2334 ldq $1,foo($29) !gotdtprel
2335 ldah $2,foo($29) !dtprelhi
2336 lda $3,foo($2) !dtprello
2337 lda $4,foo($29) !dtprel
2338 ldq $1,foo($29) !gottprel
2339 ldah $2,foo($29) !tprelhi
2340 lda $3,foo($2) !tprello
2341 lda $4,foo($29) !tprel'
2344 tls_as_opt=--fatal-warnings
2348 .section ".tdata","awT",@progbits
2360 .section ".tdata","awT",@progbits
2364 addil LT%foo-$tls_gdidx$,gp
2365 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2368 addil LT%foo-$tls_ldidx$,gp
2370 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2371 addil LR%foo-$tls_dtpoff$,%ret0
2372 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2374 addil LT%foo-$tls_ieoff$,gp
2375 ldw RT%foo-$tls_ieoff$(%r1),%t2
2378 addil LR%foo-$tls_leoff$,%t1
2379 ldo RR%foo-$tls_leoff$(%r1),%t2'
2382 tls_as_opt=--fatal-warnings
2386 .section ".tdata","awT",%progbits
2399 .section ".tdata","awT",@progbits
2403 leal foo@TLSGD(,%ebx,1), %eax
2404 leal foo@TLSLDM(%ebx), %eax
2405 leal foo@DTPOFF(%eax), %edx
2406 movl foo@GOTTPOFF(%ebx), %eax
2407 subl foo@GOTTPOFF(%ebx), %eax
2408 addl foo@GOTNTPOFF(%ebx), %eax
2409 movl foo@INDNTPOFF, %eax
2410 movl $foo@TPOFF, %eax
2411 subl $foo@TPOFF, %eax
2412 leal foo@NTPOFF(%ecx), %eax'
2415 tls_as_opt=--fatal-warnings
2419 .section ".tdata","awT",@progbits
2423 leaq foo@TLSGD(%rip), %rdi
2424 leaq foo@TLSLD(%rip), %rdi
2425 leaq foo@DTPOFF(%rax), %rdx
2426 movq foo@GOTTPOFF(%rip), %rax
2427 movq $foo@TPOFF, %rax'
2430 tls_as_opt=--fatal-warnings
2434 .section ".tdata","awT",@progbits
2437 addl r16 = @ltoff(@dtpmod(foo#)), gp
2438 addl r17 = @ltoff(@dtprel(foo#)), gp
2439 addl r18 = @ltoff(@tprel(foo#)), gp
2440 addl r19 = @dtprel(foo#), gp
2441 adds r21 = @dtprel(foo#), r13
2442 movl r23 = @dtprel(foo#)
2443 addl r20 = @tprel(foo#), gp
2444 adds r22 = @tprel(foo#), r13
2445 movl r24 = @tprel(foo#)'
2448 tls_as_opt=--fatal-warnings
2452 .section .tdata,"awT",@progbits
2456 addiu $4, $28, %tlsgd(x)
2457 addiu $4, $28, %tlsldm(x)
2458 lui $4, %dtprel_hi(x)
2459 addiu $4, $4, %dtprel_lo(x)
2460 lw $4, %gottprel(x)($28)
2461 lui $4, %tprel_hi(x)
2462 addiu $4, $4, %tprel_lo(x)'
2465 tls_as_opt='-32 --fatal-warnings'
2469 .section ".tdata","awT",@progbits
2477 addi 3,31,ld0@got@tlsgd
2479 addi 3,31,x1@got@tlsld
2482 addis 9,3,x2@dtprel@ha
2483 addi 9,9,x2@dtprel@l
2484 lwz 9,x3@got@tprel(31)
2487 addis 9,2,x2@tprel@ha
2488 addi 9,9,x2@tprel@l'
2491 tls_as_opt="-a32 --fatal-warnings"
2495 .section ".tdata","awT",@progbits
2503 addi 3,2,ld0@got@tlsgd
2509 addi 3,2,x1@got@tlsld
2515 addis 9,3,x2@dtprel@ha
2516 addi 9,9,x2@dtprel@l
2519 ld 9,x3@got@dtprel(2)
2525 tls_as_opt="-a64 --fatal-warnings"
2529 .section ".tdata","awT",@progbits
2538 l %r1,foo@GOTNTPOFF(%r12)
2539 l %r1,0(%r1):tls_load:foo
2540 bas %r14,0(%r1,%r13):tls_gdcall:foo
2541 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2544 tls_as_opt="-m31 --fatal-warnings"
2548 .section ".tdata","awT",@progbits
2556 lg %r1,foo@GOTNTPOFF(%r12)
2557 larl %r1,foo@INDNTPOFF
2558 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2559 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2562 tls_as_opt="-m64 -Aesame --fatal-warnings"
2564 sh-*-* | sh[34]-*-*)
2566 .section ".tdata","awT",@progbits
2576 tls_as_opt=--fatal-warnings
2580 sparc*-sun-solaris2.[56789]*)
2581 # TLS was introduced in the Solaris 9 4/04 release but
2582 # we do not enable it by default on Solaris 9 either.
2583 if test "x$enable_tls" = xyes ; then
2589 sparc*-sun-solaris2.*)
2596 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2598 .section ".tdata",#alloc,#write,#tls
2601 sethi %tgd_hi22(foo), %o0
2602 add %o0, %tgd_lo10(foo), %o1
2603 add %l7, %o1, %o0, %tgd_add(foo)
2604 call __tls_get_addr, %tgd_call(foo)
2605 sethi %tldm_hi22(foo), %l1
2606 add %l1, %tldm_lo10(foo), %l2
2607 add %l7, %l2, %o0, %tldm_add(foo)
2608 call __tls_get_addr, %tldm_call(foo)
2609 sethi %tldo_hix22(foo), %l3
2610 xor %l3, %tldo_lox10(foo), %l4
2611 add %o0, %l4, %l5, %tldo_add(foo)
2612 sethi %tie_hi22(foo), %o3
2613 add %o3, %tie_lo10(foo), %o3
2614 ld [%l7 + %o3], %o2, %tie_ld(foo)
2615 add %g7, %o2, %o4, %tie_add(foo)
2616 sethi %tle_hix22(foo), %l1
2617 xor %l1, %tle_lox10(foo), %o5
2618 ld [%g7 + %o5], %o1'
2623 .section ".tdata","awT",@progbits
2626 sethi %tgd_hi22(foo), %o0
2627 add %o0, %tgd_lo10(foo), %o1
2628 add %l7, %o1, %o0, %tgd_add(foo)
2629 call __tls_get_addr, %tgd_call(foo)
2630 sethi %tldm_hi22(foo), %l1
2631 add %l1, %tldm_lo10(foo), %l2
2632 add %l7, %l2, %o0, %tldm_add(foo)
2633 call __tls_get_addr, %tldm_call(foo)
2634 sethi %tldo_hix22(foo), %l3
2635 xor %l3, %tldo_lox10(foo), %l4
2636 add %o0, %l4, %l5, %tldo_add(foo)
2637 sethi %tie_hi22(foo), %o3
2638 add %o3, %tie_lo10(foo), %o3
2639 ld [%l7 + %o3], %o2, %tie_ld(foo)
2640 add %g7, %o2, %o4, %tie_add(foo)
2641 sethi %tle_hix22(foo), %l1
2642 xor %l1, %tle_lox10(foo), %o5
2643 ld [%g7 + %o5], %o1'
2646 tls_as_opt="-32 --fatal-warnings"
2652 if test "x$enable_tls" = xno ; then
2653 : # TLS explicitly disabled.
2654 elif test "x$enable_tls" = xyes ; then
2655 set_have_as_tls=yes # TLS explicitly enabled.
2656 elif test -z "$tls_first_major"; then
2657 : # If we don't have a check, assume no support.
2659 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2660 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2661 [set_have_as_tls=yes])
2663 if test $set_have_as_tls = yes ; then
2664 AC_DEFINE(HAVE_AS_TLS, 1,
2665 [Define if your assembler supports thread-local storage.])
2668 # Target-specific assembler checks.
2670 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2671 gcc_cv_ld_static_dynamic=no
2672 if test $in_tree_ld = yes ; then
2673 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2674 gcc_cv_ld_static_dynamic=yes
2676 elif test x$gcc_cv_ld != x; then
2677 # Check if linker supports -Bstatic/-Bdynamic option
2678 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2679 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2680 gcc_cv_ld_static_dynamic=yes
2683 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2684 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2685 [Define if your linker supports -Bstatic/-Bdynamic option.])
2687 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2689 if test x"$demangler_in_ld" = xyes; then
2690 AC_MSG_CHECKING(linker --demangle support)
2691 gcc_cv_ld_demangle=no
2692 if test $in_tree_ld = yes; then
2693 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2694 gcc_cv_ld_demangle=yes
2696 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2697 # Check if the GNU linker supports --demangle option
2698 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2699 gcc_cv_ld_demangle=yes
2702 if test x"$gcc_cv_ld_demangle" = xyes; then
2703 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2704 [Define if your linker supports --demangle option.])
2706 AC_MSG_RESULT($gcc_cv_ld_demangle)
2710 # All TARGET_ABI_OSF targets.
2711 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2712 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2713 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2716 extbl $3, $2, $3 !lituse_bytoff!1
2717 ldq $2, a($29) !literal!1
2718 ldq $4, b($29) !literal!2
2719 ldq_u $3, 0($2) !lituse_base!1
2720 ldq $27, f($29) !literal!5
2721 jsr $26, ($27), f !lituse_jsr!5
2722 ldah $29, 0($26) !gpdisp!3
2723 lda $0, c($29) !gprel
2724 ldah $1, d($29) !gprelhigh
2725 lda $1, d($1) !gprellow
2726 lda $29, 0($29) !gpdisp!3],,
2727 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2728 [Define if your assembler supports explicit relocations.])])
2729 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2730 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2733 ldq $27, a($29) !literal!1
2734 jsr $26, ($27), a !lituse_jsrdirect!1],,
2735 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2736 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2740 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2741 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2742 [-no-mul-bug-abort], [.text],,
2743 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2744 [Define if your assembler supports the -no-mul-bug-abort option.])])
2748 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2749 [.register %g2, #scratch],,
2750 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2751 [Define if your assembler supports .register.])])
2753 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2755 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2756 [Define if your assembler supports -relax option.])])
2758 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2759 gcc_cv_as_sparc_ua_pcrel,,
2767 .uaword %r_disp32(foo)],
2768 [if test x$gcc_cv_ld != x \
2769 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2770 gcc_cv_as_sparc_ua_pcrel=yes
2773 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2774 [Define if your assembler and linker support unaligned PC relative relocs.])
2776 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2777 gcc_cv_as_sparc_ua_pcrel_hidden,,
2782 .uaword %r_disp32(foo)
2783 .byte 0x32, 0x33, 0x34
2788 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2789 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2790 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2791 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2792 if $gcc_cv_objdump -R conftest 2> /dev/null \
2793 | grep 'DISP32' > /dev/null 2>&1; then
2796 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2800 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2801 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2802 ]) # unaligned pcrel relocs
2804 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2805 gcc_cv_as_sparc_offsetable_lo10,,
2808 or %g1, %lo(ab) + 12, %g1
2809 or %g1, %lo(ab + 12), %g1],
2810 [if test x$gcc_cv_objdump != x \
2811 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2812 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2813 gcc_cv_as_sparc_offsetable_lo10=yes
2815 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2816 [Define if your assembler supports offsetable %lo().])])
2820 i[34567]86-*-* | x86_64-*-*)
2823 cygwin* | pe | mingw32*)
2824 # Used for DWARF 2 in PE
2825 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2826 gcc_cv_as_ix86_pe_secrel32,
2832 [if test x$gcc_cv_ld != x \
2833 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2834 gcc_cv_as_ix86_pe_secrel32=yes
2837 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2838 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2842 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2843 gcc_cv_as_ix86_filds_fists,
2844 [2,9,0],, [filds mem; fists mem],,
2845 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2846 [Define if your assembler uses the new HImode fild and fist notation.])])
2848 gcc_GAS_CHECK_FEATURE([cmov syntax],
2849 gcc_cv_as_ix86_cmov_sun_syntax,,,
2850 [cmovl.l %edx, %eax],,
2851 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2852 [Define if your assembler supports the Sun syntax for cmov.])])
2854 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2855 gcc_cv_as_ix86_ffreep,,,
2857 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2858 [Define if your assembler supports the ffreep mnemonic.])])
2860 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2861 gcc_cv_as_ix86_diff_sect_delta,,,
2869 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2870 [Define if your assembler supports the subtraction of symbols in different sections.])])
2872 # This one is used unconditionally by i386.[ch]; it is to be defined
2873 # to 1 if the feature is present, 0 otherwise.
2874 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2875 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2881 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2882 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2883 [Define true if the assembler supports '.long foo@GOTOFF'.])
2887 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2888 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2890 addl r15 = @ltoffx(x#), gp
2892 ld8.mov r16 = [[r15]], x#],,
2893 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2894 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2900 *-*-aix*) conftest_s=' .machine "pwr5"
2904 gcc_GAS_CHECK_FEATURE([.machine directive support],
2905 gcc_cv_as_machine_directive,,,
2906 [ .machine ppc7400])
2907 if test x$gcc_cv_as_machine_directive != xyes; then
2908 echo "*** This target requires an assembler supporting \".machine\"" >&2
2909 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2910 test x$build = x$target && exit 1
2914 *) conftest_s=' .machine power4
2919 gcc_GAS_CHECK_FEATURE([mfcr field support],
2920 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2922 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2923 [Define if your assembler supports mfcr field.])])
2926 *-*-aix*) conftest_s=' .machine "pwr5"
2929 *) conftest_s=' .machine power5
2934 gcc_GAS_CHECK_FEATURE([popcntb support],
2935 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2937 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2938 [Define if your assembler supports popcntb field.])])
2941 *-*-aix*) conftest_s=' .machine "pwr5x"
2944 *) conftest_s=' .machine power5
2949 gcc_GAS_CHECK_FEATURE([fp round support],
2950 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2952 [AC_DEFINE(HAVE_AS_FPRND, 1,
2953 [Define if your assembler supports fprnd.])])
2956 *-*-aix*) conftest_s=' .machine "pwr6"
2959 *) conftest_s=' .machine power6
2964 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2965 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2967 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2968 [Define if your assembler supports mffgpr and mftgpr.])])
2971 *-*-aix*) conftest_s=' .csect .text[[PR]]
2973 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2977 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2978 *) conftest_s=' .text
2980 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2983 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2984 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2986 [AC_DEFINE(HAVE_AS_REL16, 1,
2987 [Define if your assembler supports R_PPC_REL16 relocs.])])
2991 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2992 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2993 [ lw $4,%gp_rel(foo)($4)],,
2994 [if test x$target_cpu_default = x
2995 then target_cpu_default=MASK_EXPLICIT_RELOCS
2996 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2998 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2999 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3000 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3001 [Define if the assembler understands -mno-shared.])])
3005 # Mips and HP-UX need the GNU assembler.
3006 # Linux on IA64 might be able to use the Intel assembler.
3009 mips*-*-* | *-*-hpux* )
3010 if test x$gas_flag = xyes \
3011 || test x"$host" != x"$build" \
3012 || test ! -x "$gcc_cv_as" \
3013 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3016 echo "*** This configuration requires the GNU assembler" >&2
3022 # ??? Not all targets support dwarf2 debug_line, even within a version
3023 # of gas. Moreover, we need to emit a valid instruction to trigger any
3024 # info to the output file. So, as supported targets are added to gas 2.11,
3025 # add some instruction here to (also) show we expect this might work.
3026 # ??? Once 2.11 is released, probably need to add first known working
3027 # version to the per-target configury.
3029 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3030 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3031 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-*)
3034 ia64*-*-* | s390*-*-*)
3041 if test x"$insn" != x; then
3043 .file 1 \"conftest.s\"
3046 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3047 gcc_cv_as_dwarf2_debug_line,
3048 [elf,2,11,0],, [$conftest_s],
3049 [if test x$gcc_cv_objdump != x \
3050 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3051 | grep debug_line > /dev/null 2>&1; then
3052 gcc_cv_as_dwarf2_debug_line=yes
3055 # The .debug_line file table must be in the exact order that
3056 # we specified the files, since these indices are also used
3057 # by DW_AT_decl_file. Approximate this test by testing if
3058 # the assembler bitches if the same index is assigned twice.
3059 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3060 gcc_cv_as_dwarf2_file_buggy,,,
3064 if test $gcc_cv_as_dwarf2_debug_line = yes \
3065 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3066 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3067 [Define if your assembler supports dwarf2 .file/.loc directives,
3068 and preserves file table indices exactly as given.])
3071 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3072 gcc_cv_as_gdwarf2_flag,
3073 [elf,2,11,0], [--gdwarf2], [$insn],,
3074 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3075 [Define if your assembler supports the --gdwarf2 option.])])
3077 gcc_GAS_CHECK_FEATURE([--gstabs option],
3078 gcc_cv_as_gstabs_flag,
3079 [elf,2,11,0], [--gstabs], [$insn],
3080 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3081 # and warns about it, but still exits successfully. So check for
3083 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3085 else gcc_cv_as_gstabs_flag=yes
3087 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3088 [Define if your assembler supports the --gstabs option.])])
3091 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3092 gcc_cv_ld_ro_rw_mix=unknown
3093 if test $in_tree_ld = yes ; then
3094 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3095 && test $in_tree_ld_is_elf = yes; then
3096 gcc_cv_ld_ro_rw_mix=read-write
3098 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3099 echo '.section myfoosect, "a"' > conftest1.s
3100 echo '.section myfoosect, "aw"' > conftest2.s
3101 echo '.byte 1' >> conftest2.s
3102 echo '.section myfoosect, "a"' > conftest3.s
3103 echo '.byte 0' >> conftest3.s
3104 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3105 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3106 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3107 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3108 conftest2.o conftest3.o > /dev/null 2>&1; then
3109 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3110 | sed -e '/myfoosect/!d' -e N`
3111 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3112 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3113 gcc_cv_ld_ro_rw_mix=read-only
3115 gcc_cv_ld_ro_rw_mix=read-write
3120 rm -f conftest.* conftest[123].*
3123 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3124 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3125 [Define if your linker links a mix of read-only
3126 and read-write sections into a read-write section.])
3128 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3130 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3131 gcc_cv_ld_eh_frame_hdr=no
3132 if test $in_tree_ld = yes ; then
3133 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3134 && test $in_tree_ld_is_elf = yes; then
3135 gcc_cv_ld_eh_frame_hdr=yes
3137 elif test x$gcc_cv_ld != x; then
3138 # Check if linker supports --eh-frame-hdr option
3139 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3140 gcc_cv_ld_eh_frame_hdr=yes
3143 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3144 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3145 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3146 [Define if your linker supports --eh-frame-hdr option.])
3148 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3150 AC_MSG_CHECKING(linker position independent executable support)
3152 if test $in_tree_ld = yes ; then
3153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3154 && test $in_tree_ld_is_elf = yes; then
3157 elif test x$gcc_cv_ld != x; then
3158 # Check if linker supports -pie option
3159 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3163 if test x"$gcc_cv_ld_pie" = xyes; then
3164 AC_DEFINE(HAVE_LD_PIE, 1,
3165 [Define if your linker supports -pie option.])
3167 AC_MSG_RESULT($gcc_cv_ld_pie)
3169 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3170 gcc_cv_ld_eh_gc_sections=no
3171 if test $in_tree_ld = yes ; then
3172 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3173 && test $in_tree_ld_is_elf = yes; then
3174 gcc_cv_ld_eh_gc_sections=yes
3176 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3177 cat > conftest.s <<EOF
3180 .type _start, @function
3183 .size _start, .-_start
3184 .section .text.foo,"ax",@progbits
3185 .type foo, @function
3189 .section .gcc_except_table.foo,"a",@progbits
3192 .section .eh_frame,"a",@progbits
3195 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3196 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3197 | grep "gc-sections option ignored" > /dev/null; then
3198 gcc_cv_ld_eh_gc_sections=no
3199 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3200 gcc_cv_ld_eh_gc_sections=yes
3201 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3202 if test x$gcc_cv_as_comdat_group != xyes; then
3203 gcc_cv_ld_eh_gc_sections=no
3204 cat > conftest.s <<EOF
3207 .type _start, @function
3210 .size _start, .-_start
3211 .section .gnu.linkonce.t.foo,"ax",@progbits
3212 .type foo, @function
3216 .section .gcc_except_table.foo,"a",@progbits
3219 .section .eh_frame,"a",@progbits
3222 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3223 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3224 | grep "gc-sections option ignored" > /dev/null; then
3225 gcc_cv_ld_eh_gc_sections=no
3226 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3227 gcc_cv_ld_eh_gc_sections=yes
3233 rm -f conftest.s conftest.o conftest
3237 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3238 gcc_cv_ld_eh_gc_sections=no
3241 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3242 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3243 [Define if your linker supports garbage collection of
3244 sections in presence of EH frames.])
3246 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3252 AC_CACHE_CHECK(linker --as-needed support,
3253 gcc_cv_ld_as_needed,
3254 [gcc_cv_ld_as_needed=no
3255 if test $in_tree_ld = yes ; then
3256 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3257 && test $in_tree_ld_is_elf = yes; then
3258 gcc_cv_ld_as_needed=yes
3260 elif test x$gcc_cv_ld != x; then
3261 # Check if linker supports --as-needed and --no-as-needed options
3262 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3263 gcc_cv_ld_as_needed=yes
3267 if test x"$gcc_cv_ld_as_needed" = xyes; then
3268 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3269 [Define if your linker supports --as-needed and --no-as-needed options.])
3272 case "$target:$tm_file" in
3273 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3274 AC_CACHE_CHECK(linker support for omitting dot symbols,
3275 gcc_cv_ld_no_dot_syms,
3276 [gcc_cv_ld_no_dot_syms=no
3277 if test $in_tree_ld = yes ; then
3278 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3279 gcc_cv_ld_no_dot_syms=yes
3281 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3282 cat > conftest1.s <<EOF
3286 cat > conftest2.s <<EOF
3287 .section ".opd","aw"
3292 .quad .LEfoo,.TOC.@tocbase,0
3298 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3299 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3300 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3301 gcc_cv_ld_no_dot_syms=yes
3303 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3306 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3307 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3308 [Define if your PowerPC64 linker only needs function descriptor syms.])
3313 AC_CACHE_CHECK(linker --sysroot support,
3315 [gcc_cv_ld_sysroot=no
3316 if test $in_tree_ld = yes ; then
3317 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3318 gcc_cv_ld_sysroot=yes
3320 elif test x$gcc_cv_ld != x; then
3321 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3322 gcc_cv_ld_sysroot=yes
3325 if test x"$gcc_cv_ld_sysroot" = xyes; then
3326 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3327 [Define if your linker supports --sysroot.])
3330 if test x$with_sysroot = x && test x$host = x$target \
3331 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3332 && test "$prefix" != "NONE"; then
3333 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3334 [Define to PREFIX/include if cpp should also search that directory.])
3337 # Test for stack protector support in target C library.
3340 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3341 gcc_cv_libc_provides_ssp,
3342 [gcc_cv_libc_provides_ssp=no
3343 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3344 if test "x$with_sysroot" = x; then
3345 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3346 elif test "x$with_sysroot" = xyes; then
3347 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3349 glibc_header_dir="${with_sysroot}/usr/include"
3352 glibc_header_dir=/usr/include
3354 # glibc 2.4 and later provides __stack_chk_fail and
3355 # either __stack_chk_guard, or TLS access to stack guard canary.
3356 if test -f $glibc_header_dir/features.h \
3357 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3358 $glibc_header_dir/features.h > /dev/null; then
3359 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3360 $glibc_header_dir/features.h > /dev/null; then
3361 gcc_cv_libc_provides_ssp=yes
3362 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3363 $glibc_header_dir/features.h > /dev/null \
3364 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3365 $glibc_header_dir/features.h > /dev/null; then
3366 gcc_cv_libc_provides_ssp=yes
3369 *) gcc_cv_libc_provides_ssp=no ;;
3371 if test x$gcc_cv_libc_provides_ssp = xyes; then
3372 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3373 [Define if your target C library provides stack protector support])
3376 # Check if TFmode long double should be used by default or not.
3377 # Some glibc targets used DFmode long double, but with glibc 2.4
3378 # and later they can use TFmode.
3380 powerpc*-*-*gnu* | \
3384 AC_ARG_WITH(long-double-128,
3385 [ --with-long-double-128 Use 128-bit long double by default.],
3386 gcc_cv_target_ldbl128="$with_long_double_128",
3387 [gcc_cv_target_ldbl128=no
3388 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3389 if test "x$with_sysroot" = x; then
3390 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3391 elif test "x$with_sysroot" = xyes; then
3392 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3394 glibc_header_dir="${with_sysroot}/usr/include"
3397 glibc_header_dir=/usr/include
3400 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3401 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3402 && gcc_cv_target_ldbl128=yes
3407 if test x$gcc_cv_target_ldbl128 = xyes; then
3408 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3409 [Define if TFmode long double should be the default])
3412 # Find out what GC implementation we want, or may, use.
3414 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3422 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3425 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3430 echo "Using $GGC for garbage collection."
3432 # Use the system's zlib library.
3434 zlibinc="-I\$(srcdir)/../zlib"
3435 AC_ARG_WITH(system-zlib,
3436 [ --with-system-zlib use installed libz],
3443 dnl Very limited version of automake's enable-maintainer-mode
3445 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3446 dnl maintainer-mode is disabled by default
3447 AC_ARG_ENABLE(maintainer-mode,
3448 [ --enable-maintainer-mode
3449 enable make rules and dependencies not useful
3450 (and sometimes confusing) to the casual installer],
3451 maintainer_mode=$enableval,
3454 AC_MSG_RESULT($maintainer_mode)
3456 if test "$maintainer_mode" = "yes"; then
3467 # Make empty files to contain the specs and options for each language.
3468 # Then add #include lines to for a compiler that has specs and/or options.
3474 # These (without "all_") are set in each config-lang.in.
3475 # `language' must be a single word so is spelled singularly.
3480 all_outputs='Makefile gccbug mklibgcc libada-mk'
3481 # List of language makefile fragments.
3483 # List of language subdirectory makefiles. Deprecated.
3485 # Files for gengtype
3486 all_gtfiles="$target_gtfiles"
3487 # Files for gengtype with language
3488 all_gtfiles_files_langs=
3489 all_gtfiles_files_files=
3491 # These are the languages that are set in --enable-languages,
3492 # and are available in the GCC tree.
3493 all_selected_languages=
3495 # Add the language fragments.
3496 # Languages are added via two mechanisms. Some information must be
3497 # recorded in makefile variables, these are defined in config-lang.in.
3498 # We accumulate them and plug them into the main Makefile.
3499 # The other mechanism is a set of hooks for each of the main targets
3500 # like `clean', `install', etc.
3502 language_hooks="Make-hooks"
3504 for lang in ${srcdir}/*/config-lang.in
3507 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3509 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3510 if test "x$lang_alias" = x
3512 echo "$lang doesn't set \$language." 1>&2
3515 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3516 subdirs="$subdirs $subdir"
3517 case ",$enable_languages," in
3519 all_selected_languages="$all_selected_languages $lang_alias"
3520 if test -f $srcdir/$subdir/lang-specs.h; then
3521 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3534 . ${srcdir}/$subdir/config-lang.in
3535 if test "x$language" = x
3537 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3542 case ",$enable_languages," in
3545 for i in $subdir_requires; do
3546 test -f "${srcdir}/$i/config-lang.in" && continue
3554 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3555 if test -f $srcdir/$subdir/lang.opt; then
3556 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3558 if test -f $srcdir/$subdir/$subdir-tree.def; then
3559 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3561 if test -f ${srcdir}/$subdir/Makefile.in
3562 then all_lang_makefiles="$subdir/Makefile"
3564 all_languages="$all_languages $language"
3565 if test "x$boot_language" = xyes
3567 all_boot_languages="$all_boot_languages $language"
3569 all_compilers="$all_compilers $compilers"
3570 all_stagestuff="$all_stagestuff $stagestuff"
3571 all_outputs="$all_outputs $outputs"
3572 all_gtfiles="$all_gtfiles $gtfiles"
3575 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3576 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3580 # Pick up gtfiles for c
3583 . ${srcdir}/c-config-lang.in
3584 all_gtfiles="$all_gtfiles $gtfiles"
3587 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3588 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3592 for language in $all_selected_languages
3594 check_languages="$check_languages check-$language"
3597 # We link each language in with a set of hooks, reached indirectly via
3598 # lang.${target}. Only do so for selected languages.
3602 target_list="all.cross start.encap rest.encap tags \
3603 install-common install-man install-info dvi pdf html \
3604 uninstall info man srcextra srcman srcinfo \
3605 mostlyclean clean distclean maintainer-clean \
3606 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3608 for t in $target_list
3611 for lang in $all_selected_languages
3615 echo "lang.$t: $x" >> Make-hooks
3624 echo "dir ." > .gdbinit
3625 echo "dir ${srcdir}" >> .gdbinit
3626 if test x$gdb_needs_out_file_path = xyes
3628 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3630 if test "x$subdirs" != x; then
3633 echo "dir ${srcdir}/$s" >> .gdbinit
3636 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3638 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3639 # absolute path for gcc_tooldir based on inserting the number of up-directory
3640 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3641 # $(libsubdir)/@(unlibsubdir) based path.
3642 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3643 # make and thus we'd get different behavior depending on where we built the
3645 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3646 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3648 changequote(<<, >>)dnl
3649 # An explanation of the sed strings:
3650 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3651 # -e 's|/$||' match a trailing forward slash and eliminates it
3652 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3653 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3655 # (*) Note this pattern overwrites the first character of the string
3656 # with a forward slash if one is not already present. This is not a
3657 # problem because the exact names of the sub-directories concerned is
3658 # unimportant, just the number of them matters.
3660 # The practical upshot of these patterns is like this:
3662 # prefix exec_prefix result
3663 # ------ ----------- ------
3665 # /foo/ /foo/bar ../
3666 # /foo /foo/bar/ ../
3667 # /foo/ /foo/bar/ ../
3668 # /foo /foo/bar/ugg ../../
3671 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3672 changequote([, ])dnl
3674 AC_SUBST(gcc_tooldir)
3677 # Find a directory in which to install a shared libgcc.
3679 AC_ARG_ENABLE(version-specific-runtime-libs,
3680 [ --enable-version-specific-runtime-libs
3681 specify that runtime libraries should be
3682 installed in a compiler-specific directory])
3684 AC_ARG_WITH(slibdir,
3685 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3686 slibdir="$with_slibdir",
3687 if test "${enable_version_specific_runtime_libs+set}" = set; then
3688 slibdir='$(libsubdir)'
3689 elif test "$host" != "$target"; then
3690 slibdir='$(build_tooldir)/lib'
3696 objdir=`${PWDCMD-pwd}`
3699 AC_ARG_WITH(datarootdir,
3700 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3701 datarootdir="\${prefix}/$with_datarootdir",
3702 datarootdir='$(prefix)/share')
3703 AC_SUBST(datarootdir)
3706 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3707 docdir="\${prefix}/$with_docdir",
3708 docdir='$(datarootdir)')
3711 AC_ARG_WITH(htmldir,
3712 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3713 htmldir="\${prefix}/$with_htmldir",
3714 htmldir='$(docdir)')
3717 # Substitute configuration variables
3720 AC_SUBST(all_boot_languages)
3721 AC_SUBST(all_compilers)
3722 AC_SUBST(all_gtfiles)
3723 AC_SUBST(all_gtfiles_files_langs)
3724 AC_SUBST(all_gtfiles_files_files)
3725 AC_SUBST(all_lang_makefrags)
3726 AC_SUBST(all_lang_makefiles)
3727 AC_SUBST(all_languages)
3728 AC_SUBST(all_selected_languages)
3729 AC_SUBST(all_stagestuff)
3730 AC_SUBST(build_exeext)
3731 AC_SUBST(build_install_headers_dir)
3732 AC_SUBST(build_xm_file_list)
3733 AC_SUBST(build_xm_include_list)
3734 AC_SUBST(build_xm_defines)
3735 AC_SUBST(check_languages)
3736 AC_SUBST(cc_set_by_configure)
3737 AC_SUBST(quoted_cc_set_by_configure)
3738 AC_SUBST(cpp_install_dir)
3739 AC_SUBST(xmake_file)
3740 AC_SUBST(tmake_file)
3741 AC_SUBST(extra_gcc_objs)
3742 AC_SUBST(extra_headers_list)
3743 AC_SUBST(extra_objs)
3744 AC_SUBST(extra_parts)
3745 AC_SUBST(extra_passes)
3746 AC_SUBST(extra_programs)
3747 AC_SUBST(float_h_file)
3748 AC_SUBST(gcc_config_arguments)
3749 AC_SUBST(gcc_gxx_include_dir)
3750 AC_SUBST(host_exeext)
3751 AC_SUBST(host_xm_file_list)
3752 AC_SUBST(host_xm_include_list)
3753 AC_SUBST(host_xm_defines)
3754 AC_SUBST(out_host_hook_obj)
3756 AC_SUBST(lang_opt_files)
3757 AC_SUBST(lang_specs_files)
3758 AC_SUBST(lang_tree_files)
3759 AC_SUBST(local_prefix)
3761 AC_SUBST(objc_boehm_gc)
3763 AC_SUBST(out_object_file)
3764 AC_SUBST(stage_prefix_set_by_configure)
3765 AC_SUBST(quoted_stage_prefix_set_by_configure)
3766 AC_SUBST(thread_file)
3767 AC_SUBST(tm_file_list)
3768 AC_SUBST(tm_include_list)
3769 AC_SUBST(tm_defines)
3770 AC_SUBST(tm_p_file_list)
3771 AC_SUBST(tm_p_include_list)
3772 AC_SUBST(xm_file_list)
3773 AC_SUBST(xm_include_list)
3774 AC_SUBST(xm_defines)
3775 AC_SUBST(c_target_objs)
3776 AC_SUBST(cxx_target_objs)
3777 AC_SUBST(target_cpu_default)
3779 AC_SUBST_FILE(language_hooks)
3782 if test x${build} = x${host} ; then
3783 if test x${host} = x${target} ; then
3784 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3786 echo "Links are now set up to build a cross-compiler" 1>&2
3787 echo " from ${host} to ${target}." 1>&2
3790 if test x${host} = x${target} ; then
3791 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3792 echo " for ${target}." 1>&2
3794 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3795 echo " from ${host} to ${target}." 1>&2
3799 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3800 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3802 # Configure the subdirectories
3803 # AC_CONFIG_SUBDIRS($subdirs)
3805 # Create the Makefile
3806 # and configure language subdirectories
3807 AC_CONFIG_FILES($all_outputs)
3809 AC_CONFIG_COMMANDS([default],
3811 case ${CONFIG_HEADERS} in
3812 *auto-host.h:config.in*)
3815 # Make sure all the subdirs exist.
3816 for d in $subdirs doc build
3818 test -d $d || mkdir $d
3820 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3821 # bootstrapping and the installation procedure can still use
3822 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3823 # FLAGS_TO_PASS has been modified to solve the problem there.
3824 # This is virtually a duplicate of what happens in configure.lang; we do
3825 # an extra check to make sure this only happens if ln -s can be used.
3828 for d in ${subdirs} ; do
3829 STARTDIR=`${PWDCMD-pwd}`
3831 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3834 $LN_S ../$t $t 2>/dev/null
3841 [subdirs='$subdirs'])