2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 # Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 2, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING. If not, write to the Free
21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 changequote(<<, >>)dnl
145 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
150 AC_ARG_WITH(cpp_install_dir,
151 [ --with-cpp-install-dir=DIR
152 install the user visible C preprocessor in DIR
153 (relative to PREFIX) as well as PREFIX/bin],
154 [if test x$withval = xyes; then
155 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
156 elif test x$withval != xno; then
157 cpp_install_dir=$withval
160 # We would like to our source tree to be readonly. However when releases or
161 # pre-releases are generated, the flex/bison generated files as well as the
162 # various formats of manuals need to be included along with the rest of the
163 # sources. Therefore we have --enable-generated-files-in-srcdir to do
166 AC_MSG_CHECKING([whether to place generated files in the source directory])
167 dnl generated-files-in-srcdir is disabled by default
168 AC_ARG_ENABLE(generated-files-in-srcdir,
169 [ --enable-generated-files-in-srcdir
170 put copies of generated files in source dir
171 intended for creating source tarballs for users
172 without texinfo bison or flex.],
173 generated_files_in_srcdir=$enableval,
174 generated_files_in_srcdir=no)
176 AC_MSG_RESULT($generated_files_in_srcdir)
178 if test "$generated_files_in_srcdir" = "yes"; then
185 # -------------------
186 # Find default linker
187 # -------------------
191 [ --with-gnu-ld arrange to work with GNU ld.],
192 gnu_ld_flag="$with_gnu_ld",
195 # With pre-defined ld
197 [ --with-ld arrange to use the specified ld (full pathname)],
198 DEFAULT_LINKER="$with_ld")
199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
200 if test ! -x "$DEFAULT_LINKER"; then
201 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
202 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
205 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
206 [Define to enable the use of a default linker.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 AC_MSG_CHECKING([whether a default assembler was specified])
250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
251 if test x"$gas_flag" = x"no"; then
252 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
254 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
264 # If a non-executable a.out is present (e.g. created by GNU as above even if
265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
266 # file, even when creating an executable, so an execution test fails.
267 # Remove possible default executable files to avoid this.
269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
270 # Autoconf includes it.
271 rm -f a.out a.exe b.out
273 # Find the native compiler
276 # autoconf is lame and doesn't give us any substitution variable for this.
277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
278 NO_MINUS_C_MINUS_O=yes
280 OUTPUT_OPTION='-o $@'
282 AC_SUBST(NO_MINUS_C_MINUS_O)
283 AC_SUBST(OUTPUT_OPTION)
285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
286 # optimizations to be activated explicitly by the toplevel.
289 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
293 # -------------------------
294 # Check C compiler features
295 # -------------------------
300 # sizeof(char) is 1 by definition.
301 AC_CHECK_SIZEOF(void *)
302 AC_CHECK_SIZEOF(short)
304 AC_CHECK_SIZEOF(long)
305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
308 # ---------------------
309 # Warnings and checking
310 # ---------------------
312 # Check $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
320 [whether ${CC} accepts -Wno-long-long],
321 [ac_cv_prog_cc_w_no_long_long],
322 [save_CFLAGS="$CFLAGS"
323 CFLAGS="-Wno-long-long"
324 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
325 [ac_cv_prog_cc_w_no_long_long=yes],
326 [ac_cv_prog_cc_w_no_long_long=no])
327 CFLAGS="$save_CFLAGS"
331 [whether ${CC} accepts -Wno-variadic-macros],
332 [ac_cv_prog_cc_w_no_variadic_macros],
333 [save_CFLAGS="$CFLAGS"
334 CFLAGS="-Wno-variadic-macros"
335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
336 [ac_cv_prog_cc_w_no_variadic_macros=yes],
337 [ac_cv_prog_cc_w_no_variadic_macros=no])
338 CFLAGS="$save_CFLAGS"
342 [whether ${CC} accepts -Wno-overlength-strings],
343 [ac_cv_prog_cc_w_no_overlength_strings],
344 [save_CFLAGS="$CFLAGS"
345 CFLAGS="-Wno-overlength-strings"
346 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
347 [ac_cv_prog_cc_w_no_overlength_strings=yes],
348 [ac_cv_prog_cc_w_no_overlength_strings=no])
349 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_no_long_long = yes \
354 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
355 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
356 strict_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
359 # Add -Wold-style-definition if it's accepted
361 [whether ${CC} accepts -Wold-style-definition],
362 [ac_cv_prog_cc_w_old_style_definition],
363 [save_CFLAGS="$CFLAGS"
364 CFLAGS="-Wold-style-definition"
365 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
366 [ac_cv_prog_cc_w_old_style_definition=yes],
367 [ac_cv_prog_cc_w_old_style_definition=no])
368 CFLAGS="$save_CFLAGS"
370 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
371 strict_warn="${strict_warn} -Wold-style-definition"
374 # Add -Wmissing-format-attribute if it's accepted
376 [whether ${CC} accepts -Wmissing-format-attribute],
377 [ac_cv_prog_cc_w_missing_format_attribute],
378 [save_CFLAGS="$CFLAGS"
379 CFLAGS="-Wmissing-format-attribute"
380 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
381 [ac_cv_prog_cc_w_missing_format_attribute=yes],
382 [ac_cv_prog_cc_w_missing_format_attribute=no])
383 CFLAGS="$save_CFLAGS"
385 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
386 strict_warn="${strict_warn} -Wmissing-format-attribute"
389 # Enable -Werror, period.
390 AC_ARG_ENABLE(werror_always,
391 [ --enable-werror-always enable -Werror always], [],
392 [enable_werror_always=no])
393 if test x${enable_werror_always} = xyes ; then
394 strict_warn="${strict_warn} -Werror"
396 AC_SUBST(strict_warn)
398 # Get C++ compatibility warning flag, if supported.
400 [whether ${CC} accepts -Wc++-compat],
401 [ac_cv_prog_cc_w_cxx_compat],
402 [save_CFLAGS="$CFLAGS"
403 CFLAGS="-Wc++-compat"
404 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
405 [ac_cv_prog_cc_w_cxx_compat=yes],
406 [ac_cv_prog_cc_w_cxx_compat=no])
407 CFLAGS="$save_CFLAGS"
409 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
410 cxx_compat_warn="-Wc++-compat"
412 AC_SUBST(cxx_compat_warn)
415 # If the native compiler is GCC, we can enable warnings even in stage1.
416 # That's useful for people building cross-compilers, or just running a
419 if test "x$GCC" = "xyes"; then
420 warn_cflags='$(GCC_WARN_CFLAGS)'
422 AC_SUBST(warn_cflags)
424 # Enable expensive internal checks
426 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
430 AC_ARG_ENABLE(checking,
431 [ --enable-checking[=LIST]
432 enable expensive run-time checks. With LIST,
433 enable only specific categories of checks.
434 Categories are: yes,no,all,none,release.
435 Flags are: assert,fold,gc,gcac,misc,
436 rtlflag,rtl,runtime,tree,valgrind.],
437 [ac_checking_flags="${enableval}"],[
438 # Determine the default checks.
439 if test x$is_release = x ; then
440 ac_checking_flags=yes
442 ac_checking_flags=release
448 ac_gc_always_collect=
451 ac_runtime_checking=1
453 ac_valgrind_checking=
454 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
455 for check in $ac_checking_flags
458 # these set all the flags to specific states
459 yes) ac_assert_checking=1 ; ac_checking=1 ;
460 ac_fold_checking= ; ac_gc_checking=1 ;
461 ac_gc_always_collect= ; ac_rtl_checking= ;
462 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
463 ac_tree_checking=1 ; ac_valgrind_checking= ;;
464 no|none) ac_assert_checking= ; ac_checking= ;
465 ac_fold_checking= ; ac_gc_checking= ;
466 ac_gc_always_collect= ; ac_rtl_checking= ;
467 ac_rtlflag_checking= ; ac_runtime_checking= ;
468 ac_tree_checking= ; ac_valgrind_checking= ;;
469 all) ac_assert_checking=1 ; ac_checking=1 ;
470 ac_fold_checking=1 ; ac_gc_checking=1 ;
471 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
472 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
473 ac_tree_checking=1 ; ac_valgrind_checking= ;;
474 release) ac_assert_checking=1 ; ac_checking= ;
475 ac_fold_checking= ; ac_gc_checking= ;
476 ac_gc_always_collect= ; ac_rtl_checking= ;
477 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
478 ac_tree_checking= ; ac_valgrind_checking= ;;
479 # these enable particular checks
480 assert) ac_assert_checking=1 ;;
481 fold) ac_fold_checking=1 ;;
482 gc) ac_gc_checking=1 ;;
483 gcac) ac_gc_always_collect=1 ;;
484 misc) ac_checking=1 ;;
485 rtl) ac_rtl_checking=1 ;;
486 rtlflag) ac_rtlflag_checking=1 ;;
487 runtime) ac_runtime_checking=1 ;;
488 tree) ac_tree_checking=1 ;;
489 valgrind) ac_valgrind_checking=1 ;;
490 *) AC_MSG_ERROR(unknown check category $check) ;;
496 if test x$ac_checking != x ; then
497 AC_DEFINE(ENABLE_CHECKING, 1,
498 [Define if you want more run-time sanity checks. This one gets a grab
499 bag of miscellaneous but relatively cheap checks.])
500 nocommon_flag=-fno-common
502 AC_SUBST(nocommon_flag)
503 if test x$ac_assert_checking != x ; then
504 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
505 [Define if you want assertions enabled. This is a cheap check.])
507 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
508 if test x$ac_runtime_checking != x ; then
509 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
510 [Define if you want runtime assertions enabled. This is a cheap check.])
512 if test x$ac_tree_checking != x ; then
513 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
514 [Define if you want all operations on trees (the basic data
515 structure of the front ends) to be checked for dynamic type safety
516 at runtime. This is moderately expensive. The tree browser debugging
517 routines will also be enabled by this option.
519 TREEBROWSER=tree-browser.o
521 AC_SUBST(TREEBROWSER)
522 if test x$ac_rtl_checking != x ; then
523 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
524 [Define if you want all operations on RTL (the basic data structure
525 of the optimizer and back end) to be checked for dynamic type safety
526 at runtime. This is quite expensive.])
528 if test x$ac_rtlflag_checking != x ; then
529 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
530 [Define if you want RTL flag accesses to be checked against the RTL
531 codes that are supported for each access macro. This is relatively
534 if test x$ac_gc_checking != x ; then
535 AC_DEFINE(ENABLE_GC_CHECKING, 1,
536 [Define if you want the garbage collector to do object poisoning and
537 other memory allocation checks. This is quite expensive.])
539 if test x$ac_gc_always_collect != x ; then
540 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
541 [Define if you want the garbage collector to operate in maximally
542 paranoid mode, validating the entire heap and collecting garbage at
543 every opportunity. This is extremely expensive.])
545 if test x$ac_fold_checking != x ; then
546 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
547 [Define if you want fold checked that it never destructs its argument.
548 This is quite expensive.])
550 valgrind_path_defines=
553 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
554 dnl # an if statement. This was the source of very frustrating bugs
555 dnl # in converting to autoconf 2.5x!
556 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
558 if test x$ac_valgrind_checking != x ; then
559 # It is certainly possible that there's valgrind but no valgrind.h.
560 # GCC relies on making annotations so we must have both.
561 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
562 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
563 [[#include <valgrind/memcheck.h>
564 #ifndef VALGRIND_DISCARD
565 #error VALGRIND_DISCARD not defined
567 [gcc_cv_header_valgrind_memcheck_h=yes],
568 [gcc_cv_header_valgrind_memcheck_h=no])
569 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
570 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
571 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
572 [[#include <memcheck.h>
573 #ifndef VALGRIND_DISCARD
574 #error VALGRIND_DISCARD not defined
576 [gcc_cv_header_memcheck_h=yes],
577 [gcc_cv_header_memcheck_h=no])
578 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
579 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
580 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
581 if test "x$valgrind_path" = "x" \
582 || (test $have_valgrind_h = no \
583 && test $gcc_cv_header_memcheck_h = no \
584 && test $gcc_cv_header_valgrind_memcheck_h = no); then
585 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
587 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
588 valgrind_command="$valgrind_path -q"
589 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
590 [Define if you want to run subprograms and generated programs
591 through valgrind (a memory checker). This is extremely expensive.])
592 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
593 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
594 [Define if valgrind's valgrind/memcheck.h header is installed.])
596 if test $gcc_cv_header_memcheck_h = yes; then
597 AC_DEFINE(HAVE_MEMCHECK_H, 1,
598 [Define if valgrind's memcheck.h header is installed.])
601 AC_SUBST(valgrind_path_defines)
602 AC_SUBST(valgrind_command)
604 AC_ARG_ENABLE(mapped-location,
605 [ --enable-mapped-location location_t is fileline integer cookie],,
606 enable_mapped_location=no)
608 if test "$enable_mapped_location" = yes ; then
609 AC_DEFINE(USE_MAPPED_LOCATION, 1,
610 [Define if location_t is fileline integer cookie.])
613 # Enable code coverage collection
614 AC_ARG_ENABLE(coverage,
615 [ --enable-coverage[=LEVEL]
616 enable compiler's code coverage collection.
617 Use to measure compiler performance and locate
618 unused parts of the compiler. With LEVEL, specify
619 optimization. Values are opt, noopt,
621 [case "${enableval}" in
623 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
626 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
629 # a.k.a. --disable-coverage
633 AC_MSG_ERROR(unknown coverage setting $enableval)
637 AC_SUBST(coverage_flags)
639 AC_ARG_ENABLE(gather-detailed-mem-stats,
640 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
641 [enable_gather_detailed_mem_stats=no])
642 if test x$enable_gather_detailed_mem_stats = xyes ; then
643 AC_DEFINE(GATHER_STATISTICS, 1,
644 [Define to enable detailed memory allocation stats gathering.])
647 # -------------------------------
648 # Miscenalleous configure options
649 # -------------------------------
653 [ --with-stabs arrange to use stabs instead of host debug format],
657 # Determine whether or not multilibs are enabled.
658 AC_ARG_ENABLE(multilib,
659 [ --enable-multilib enable library support for multiple ABIs],
660 [], [enable_multilib=yes])
661 AC_SUBST(enable_multilib)
663 # Enable __cxa_atexit for C++.
664 AC_ARG_ENABLE(__cxa_atexit,
665 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
668 # Enable C extension for decimal float if target supports it.
669 AC_ARG_ENABLE(decimal-float,
670 [ --enable-decimal-float enable decimal float extension to C],
672 if test x$enablevar = xyes ; then
674 powerpc*-*-linux* | i?86*-*-linux*)
675 enable_decimal_float=yes
678 AC_MSG_WARN(decimal float is not supported for this target, ignored)
679 enable_decimal_float=no
683 ], [enable_decimal_float=no])
685 AC_SUBST(enable_decimal_float)
687 dfp=`if test $enable_decimal_float = yes; then echo 1; else echo 0; fi`
688 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
689 [Define to 1 to enable decimal float extension to C.])
692 # Pass with no value to take the default
693 # Pass with a value to specify a thread package
694 AC_ARG_ENABLE(threads,
695 [ --enable-threads enable thread usage for target GCC
696 --enable-threads=LIB use LIB thread package for target GCC],,
700 [ --enable-tls enable or disable generation of tls code
701 overriding the assembler check for tls support],
705 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
706 Valid choices are 'yes' and 'no'.]) ;;
710 AC_ARG_ENABLE(objc-gc,
711 [ --enable-objc-gc enable the use of Boehm's garbage collector with
712 the GNU Objective-C runtime],
713 if test x$enable_objc_gc = xno; then
721 [ --with-dwarf2 force the default debug format to be DWARF 2],
722 dwarf2="$with_dwarf2",
725 AC_ARG_ENABLE(shared,
726 [ --disable-shared don't provide a shared libgcc],
728 case $enable_shared in
732 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
733 for pkg in $enableval; do
734 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
741 ], [enable_shared=yes])
742 AC_SUBST(enable_shared)
744 AC_ARG_WITH(build-sysroot,
745 [ --with-build-sysroot=sysroot
746 use sysroot as the system root during the build])
749 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
751 case ${with_sysroot} in
752 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
753 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
756 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
757 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
759 if test "x$exec_prefix" = xNONE; then
760 if test "x$prefix" = xNONE; then
761 test_prefix=/usr/local
766 test_prefix=$exec_prefix
768 case ${TARGET_SYSTEM_ROOT} in
769 "${test_prefix}"|"${test_prefix}/"*|\
770 '${exec_prefix}'|'${exec_prefix}/'*)
771 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
772 TARGET_SYSTEM_ROOT_DEFINE="$t"
777 TARGET_SYSTEM_ROOT_DEFINE=
778 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
780 AC_SUBST(TARGET_SYSTEM_ROOT)
781 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
782 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
784 # Build with intermodule optimisations
785 AC_ARG_ENABLE(intermodule,
786 [ --enable-intermodule build the compiler in one step],
787 [case ${enable_intermodule} in
788 yes) onestep="-onestep";;
794 # Sanity check enable_languages in case someone does not run the toplevel
795 # configure # script.
796 AC_ARG_ENABLE(languages,
797 [ --enable-languages=LIST specify which front-ends to build],
798 [case ,${enable_languages}, in
800 # go safe -- we cannot be much sure without the toplevel
802 # analysis of which target libs are present and usable
806 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
811 enable_languages=c,${enable_languages}
814 [enable_languages=c])
816 # Used by documentation targets
817 AC_SUBST(datarootdir)
821 # -------------------------
822 # Checks for other programs
823 # -------------------------
827 # Find some useful tools
829 # We need awk to create options.c and options.h.
830 # Bail out if it's missing.
832 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
840 # By default, the Darwin ranlib will not treat common symbols as
841 # definitions when building the archive table of contents. Other
842 # ranlibs do that; pass an option to the Darwin ranlib that makes
843 # it behave similarly.
849 AC_SUBST(ranlib_flags)
853 # See if cmp has --ignore-initial.
854 gcc_AC_PROG_CMP_IGNORE_INITIAL
856 # See if we have the mktemp command.
857 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
859 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
861 # See if makeinfo has been installed and is modern enough
862 # that we can use it.
863 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
864 [GNU texinfo.* \([0-9][0-9.]*\)],
866 if test $gcc_cv_prog_makeinfo_modern = no; then
867 MAKEINFO="$MISSING makeinfo"
869 *** Makeinfo is missing or too old.
870 *** Info documentation will not be built.])
877 # Is pod2man recent enough to regenerate manpages?
878 AC_MSG_CHECKING([for recent Pod::Man])
879 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
881 GENERATED_MANPAGES=generated-manpages
886 AC_SUBST(GENERATED_MANPAGES)
889 dnl Don't use AC_PROG_LEX; we insist on flex.
890 dnl LEXLIB is not useful in gcc.
891 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
894 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
896 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
897 # check for build == host before using them.
900 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
901 && test -d ../binutils ; then
902 NM='$(objdir)/../binutils/nm-new'
904 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
908 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
909 && test -d ../binutils ; then
910 AR='$(objdir)/../binutils/ar'
912 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
916 # --------------------
917 # Checks for C headers
918 # --------------------
920 AC_MSG_CHECKING(for GNU C library)
921 AC_CACHE_VAL(gcc_cv_glibc,
922 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
923 [[#include <features.h>]], [[
924 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
925 #error Not a GNU C library system
929 AC_MSG_RESULT($gcc_cv_glibc)
930 if test $gcc_cv_glibc = yes; then
931 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
960 # These libraries may be used by collect2.
961 # We may need a special search path to get them linked.
962 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
964 for libs in '' -lld -lmld \
965 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
966 '-L/usr/lib/cmplrs/cc3.11 -lmld'
969 AC_TRY_LINK_FUNC(ldopen,
970 [gcc_cv_collect2_libs="$libs"; break])
973 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
974 case $gcc_cv_collect2_libs in
976 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
978 AC_SUBST(COLLECT2_LIBS)
980 # When building Ada code on Alpha, we need exc_resume which is usually in
981 # -lexc. So test for it.
984 AC_SEARCH_LIBS(exc_resume, exc)
987 AC_SUBST(GNAT_LIBEXC)
989 # Some systems put ldexp and frexp in libm instead of libc; assume
990 # they're both in the same place. jcf-dump needs them.
993 AC_SEARCH_LIBS(ldexp, m)
998 # Use <inttypes.h> only if it exists,
999 # doesn't clash with <sys/types.h>, and declares intmax_t.
1000 AC_MSG_CHECKING(for inttypes.h)
1001 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1002 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1003 [[#include <sys/types.h>
1004 #include <inttypes.h>]],
1005 [[intmax_t i = -1;]])],
1006 [gcc_cv_header_inttypes_h=yes],
1007 [gcc_cv_header_inttypes_h=no])])
1008 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1009 if test $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1024 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1027 if test x$ac_cv_func_mbstowcs = xyes; then
1028 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1029 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1035 [gcc_cv_func_mbstowcs_works=yes],
1036 [gcc_cv_func_mbstowcs_works=no],
1037 [gcc_cv_func_mbstowcs_works=yes])])
1038 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1039 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1040 [Define this macro if mbstowcs does not crash when its
1041 first argument is NULL.])
1045 AC_CHECK_TYPE(ssize_t, int)
1047 # Try to determine the array type of the second argument of getgroups
1048 # for the target system (int or gid_t).
1050 if test "${target}" = "${build}"; then
1051 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1054 # This condition may need some tweaking. It should include all
1055 # targets where the array type of the second argument of getgroups
1056 # is int and the type of gid_t is not equivalent to int.
1057 *-*-sunos* | *-*-ultrix*)
1058 TARGET_GETGROUPS_T=int
1061 TARGET_GETGROUPS_T=gid_t
1065 AC_SUBST(TARGET_GETGROUPS_T)
1067 gcc_AC_FUNC_MMAP_BLACKLIST
1071 # Under VMS, vfork works very differently than on Unix. The standard test
1072 # won't work, and it isn't easily adaptable. It makes more sense to
1074 ac_cv_func_vfork_works=yes
1080 # Until we have in-tree GNU iconv:
1082 AC_SUBST(LIBICONV_DEP)
1088 # We will need to find libiberty.h and ansidecl.h
1089 saved_CFLAGS="$CFLAGS"
1090 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1091 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1092 strsignal strstr strverscmp \
1093 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1094 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1095 #include "ansidecl.h"
1096 #include "system.h"])
1098 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1099 #include "ansidecl.h"
1101 #ifdef HAVE_SYS_RESOURCE_H
1102 #include <sys/resource.h>
1106 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1107 #include "ansidecl.h"
1109 #ifdef HAVE_SYS_RESOURCE_H
1110 #include <sys/resource.h>
1112 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1113 [Define to \`long' if <sys/resource.h> doesn't define.])])
1115 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1116 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1117 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1118 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1119 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1120 #include "ansidecl.h"
1129 gcc_AC_CHECK_DECLS(times, , ,[
1130 #include "ansidecl.h"
1132 #ifdef HAVE_SYS_TIMES_H
1133 #include <sys/times.h>
1137 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1138 #include "ansidecl.h"
1143 # More time-related stuff.
1144 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1145 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1146 #include "ansidecl.h"
1148 #ifdef HAVE_SYS_TIMES_H
1149 #include <sys/times.h>
1151 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1152 if test $ac_cv_struct_tms = yes; then
1153 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1154 [Define if <sys/times.h> defines struct tms.])
1157 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1158 # revisit after autoconf 2.50.
1159 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1160 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1161 #include "ansidecl.h"
1163 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1164 if test $gcc_cv_type_clock_t = yes; then
1165 AC_DEFINE(HAVE_CLOCK_T, 1,
1166 [Define if <time.h> defines clock_t.])
1169 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1170 CFLAGS="$saved_CFLAGS"
1172 gcc_AC_INITFINI_ARRAY
1174 # mkdir takes a single argument on some systems.
1175 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1183 # With Setjmp/Longjmp based exception handling.
1184 AC_ARG_ENABLE(sjlj-exceptions,
1185 [ --enable-sjlj-exceptions
1186 arrange to use setjmp/longjmp exception handling],
1187 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1188 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1189 [Define 0/1 to force the choice for exception handling model.])])
1191 # For platforms with the unwind ABI which includes an unwind library,
1192 # libunwind, we can choose to use the system libunwind.
1193 AC_ARG_WITH(system-libunwind,
1194 [ --with-system-libunwind use installed libunwind])
1196 # config.gcc also contains tests of with_system_libunwind.
1197 if test x$with_system_libunwind = xyes; then
1198 AC_DEFINE(HAVE_GETIPINFO, 1,
1199 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1202 # --------------------------------------------------------
1203 # Build, host, and target specific configuration fragments
1204 # --------------------------------------------------------
1206 # Collect build-machine-specific information.
1207 . ${srcdir}/config.build
1209 # Collect host-machine-specific information.
1210 . ${srcdir}/config.host
1214 # Collect target-machine-specific information.
1215 . ${srcdir}/config.gcc
1217 extra_objs="${host_extra_objs} ${extra_objs}"
1218 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1220 # Default the target-machine variables that were not explicitly set.
1221 if test x"$tm_file" = x
1222 then tm_file=$cpu_type/$cpu_type.h; fi
1224 if test x"$extra_headers" = x
1225 then extra_headers=; fi
1227 if test x$md_file = x
1228 then md_file=$cpu_type/$cpu_type.md; fi
1230 if test x$out_file = x
1231 then out_file=$cpu_type/$cpu_type.c; fi
1233 if test x"$tmake_file" = x
1234 then tmake_file=$cpu_type/t-$cpu_type
1237 if test x"$dwarf2" = xyes
1238 then tm_file="$tm_file tm-dwarf2.h"
1241 # Say what files are being used for the output code and MD file.
1242 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1243 echo "Using \`$srcdir/config/$md_file' as machine description file."
1245 # If any of the xm_file variables contain nonexistent files, warn
1246 # about them and drop them.
1249 for x in $build_xm_file; do
1250 if test -f $srcdir/config/$x
1252 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1258 for x in $host_xm_file; do
1259 if test -f $srcdir/config/$x
1261 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1267 for x in $xm_file; do
1268 if test -f $srcdir/config/$x
1270 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1276 for f in $tm_file; do
1279 if test $count = ax; then
1280 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1282 echo "Using the following target machine macro files:"
1283 for f in $tm_file; do
1284 echo " $srcdir/config/$f"
1288 if test x$need_64bit_hwint = xyes; then
1289 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1290 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1293 if test x$use_long_long_for_widest_fast_int = xyes; then
1294 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1295 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1296 efficiently supported by the host hardware.])
1300 for f in $host_xm_file; do
1303 if test $count = a; then
1305 elif test $count = ax; then
1306 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1308 echo "Using the following host machine macro files:"
1309 for f in $host_xm_file; do
1310 echo " $srcdir/config/$f"
1313 echo "Using ${out_host_hook_obj} for host machine hooks."
1315 if test "$host_xm_file" != "$build_xm_file"; then
1317 for f in $build_xm_file; do
1320 if test $count = a; then
1322 elif test $count = ax; then
1323 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1325 echo "Using the following build machine macro files:"
1326 for f in $build_xm_file; do
1327 echo " $srcdir/config/$f"
1334 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1335 gcc_cv_mcontext_underscores,
1337 #include <sys/cdefs.h>
1338 #include <sys/signal.h>
1339 #include <ucontext.h>
1340 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1342 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1343 if test $gcc_cv_mcontext_underscores = yes; then
1344 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1345 [mcontext_t fields start with __])
1354 # Check if a valid thread package
1355 case ${enable_threads} in
1358 target_thread_file='single'
1362 target_thread_file='single'
1364 aix | dce | gnat | irix | posix | posix95 | rtems | \
1365 single | solaris | vxworks | win32 )
1366 target_thread_file=${enable_threads}
1369 echo "${enable_threads} is an unknown thread package" 1>&2
1374 if test x${thread_file} = x; then
1375 # No thread file set by target-specific clauses in config.gcc,
1376 # so use file chosen by default logic above
1377 thread_file=${target_thread_file}
1380 # Make gthr-default.h if we have a thread file.
1382 if test $thread_file != single; then
1383 rm -f gthr-default.h
1384 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1385 gthread_flags=-DHAVE_GTHR_DEFAULT
1387 AC_SUBST(gthread_flags)
1394 if test x$enable___cxa_atexit = xyes || \
1395 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1396 if test x$host = x$target; then
1398 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1399 # keyed to flag_use_cxa_atexit
1404 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1405 [echo "__cxa_atexit can't be enabled on this target"])
1409 # We can't check for __cxa_atexit when building a cross, so assume
1413 if test x$use_cxa_atexit = xyes; then
1414 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1415 [Define if you want to use __cxa_atexit, rather than atexit, to
1416 register C++ destructors for local statics and global objects.
1417 This is essential for fully standards-compliant handling of
1418 destructors, but requires __cxa_atexit in libc.])
1423 if test x$with_system_libunwind = xyes; then
1424 if test x$host = x$target; then
1425 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1428 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1429 if test x$use_getipinfo = xyes; then
1430 AC_DEFINE(HAVE_GETIPINFO, 1,
1431 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1433 echo "The system unwind library does not support _Unwind_GetIPInfo."
1436 # Look for a file containing extra machine modes.
1437 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1438 extra_modes_file='$(srcdir)'/config/${extra_modes}
1439 AC_SUBST(extra_modes_file)
1440 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1441 [Define to the name of a file containing a list of extra machine modes
1442 for this architecture.])
1445 # Convert extra_options into a form suitable for Makefile use.
1447 for f in $extra_options; do
1448 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1450 AC_SUBST(extra_opt_files)
1452 # auto-host.h is the file containing items generated by autoconf and is
1453 # the first file included by config.h.
1454 # If host=build, it is correct to have bconfig include auto-host.h
1455 # as well. If host!=build, we are in error and need to do more
1456 # work to find out the build config parameters.
1457 if test x$host = x$build
1459 build_auto=auto-host.h
1461 # We create a subdir, then run autoconf in the subdir.
1462 # To prevent recursion we set host and build for the new
1463 # invocation of configure to the build for this invocation
1470 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1471 *) realsrcdir=../${srcdir};;
1473 saved_CFLAGS="${CFLAGS}"
1474 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1475 ${realsrcdir}/configure \
1476 --enable-languages=${enable_languages-all} \
1477 --target=$target_alias --host=$build_alias --build=$build_alias
1478 CFLAGS="${saved_CFLAGS}"
1480 # We just finished tests for the build machine, so rename
1481 # the file auto-build.h in the gcc directory.
1482 mv auto-host.h ../auto-build.h
1485 build_auto=auto-build.h
1487 AC_SUBST(build_subdir)
1489 tm_file="${tm_file} defaults.h"
1490 tm_p_file="${tm_p_file} tm-preds.h"
1491 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1492 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1493 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1494 # put this back in temporarily.
1495 xm_file="auto-host.h ansidecl.h ${xm_file}"
1502 # Compile in configure arguments.
1503 if test -f configargs.h ; then
1504 # Being re-configured.
1505 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1506 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1508 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1511 # Double all backslashes and backslash all quotes to turn
1512 # gcc_config_arguments into a C string.
1513 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1514 $gcc_config_arguments
1516 gcc_config_arguments_str=`cat conftest.out`
1519 cat > configargs.h <<EOF
1520 /* Generated automatically. */
1521 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1522 static const char thread_model[] = "$thread_file";
1524 static const struct {
1525 const char *name, *value;
1526 } configure_default_options[] = $configure_default_options;
1530 # Internationalization
1531 ZW_GNU_GETTEXT_SISTER_DIR
1533 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1534 # -liconv on the link line twice.
1535 case "$LIBINTL" in *$LIBICONV*)
1539 AC_ARG_ENABLE(secureplt,
1540 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1543 # Windows32 Registry support for specifying GCC installation paths.
1544 AC_ARG_ENABLE(win32-registry,
1545 [ --disable-win32-registry
1546 disable lookup of installation paths in the
1547 Registry on Windows hosts
1548 --enable-win32-registry enable registry lookup (default)
1549 --enable-win32-registry=KEY
1550 use KEY instead of GCC version as the last portion
1551 of the registry key],,)
1554 win32 | pe | cygwin* | mingw32* | uwin*)
1555 if test "x$enable_win32_registry" != xno; then
1556 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1559 if test "x$enable_win32_registry" != xno; then
1560 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1561 [Define to 1 if installation paths should be looked up in the Windows
1562 Registry. Ignored on non-Windows hosts.])
1564 if test "x$enable_win32_registry" != xyes \
1565 && test "x$enable_win32_registry" != x; then
1566 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1567 [Define to be the last component of the Windows registry key under which
1568 to look for installation paths. The full key used will be
1569 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1570 The default is the GCC version number.])
1576 # Get an absolute path to the GCC top-level source directory
1577 holddir=`${PWDCMD-pwd}`
1579 topdir=`${PWDCMD-pwd}`
1582 # Conditionalize the makefile for this host machine.
1584 for f in ${host_xmake_file}
1586 if test -f ${srcdir}/config/$f
1588 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1592 # Conditionalize the makefile for this target machine.
1594 for f in ${tmake_file}
1596 if test -f ${srcdir}/config/$f
1598 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1601 tmake_file="${tmake_file_}"
1603 # This is a terrible hack which will go away some day.
1604 host_cc_for_libada=${CC}
1605 AC_SUBST(host_cc_for_libada)
1607 out_object_file=`basename $out_file .c`.o
1609 tm_file_list="options.h"
1610 tm_include_list="options.h"
1611 for f in $tm_file; do
1614 f=`echo $f | sed 's/^..//'`
1615 tm_file_list="${tm_file_list} $f"
1616 tm_include_list="${tm_include_list} $f"
1619 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1620 tm_include_list="${tm_include_list} $f"
1623 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1624 tm_include_list="${tm_include_list} config/$f"
1631 for f in $tm_p_file; do
1634 tm_p_file_list="${tm_p_file_list} $f"
1635 tm_p_include_list="${tm_p_include_list} $f"
1638 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1639 tm_p_include_list="${tm_p_include_list} config/$f"
1645 for f in $xm_file; do
1648 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1649 xm_include_list="${xm_include_list} $f"
1652 xm_file_list="${xm_file_list} $f"
1653 xm_include_list="${xm_include_list} $f"
1656 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1657 xm_include_list="${xm_include_list} config/$f"
1663 host_xm_include_list=
1664 for f in $host_xm_file; do
1667 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1668 host_xm_include_list="${host_xm_include_list} $f"
1671 host_xm_file_list="${host_xm_file_list} $f"
1672 host_xm_include_list="${host_xm_include_list} $f"
1675 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1676 host_xm_include_list="${host_xm_include_list} config/$f"
1682 for f in $build_xm_file; do
1685 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1686 build_xm_include_list="${build_xm_include_list} $f"
1688 auto-build.h | auto-host.h )
1689 build_xm_file_list="${build_xm_file_list} $f"
1690 build_xm_include_list="${build_xm_include_list} $f"
1693 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1694 build_xm_include_list="${build_xm_include_list} config/$f"
1699 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1700 # cross-compiler which does not use the native headers and libraries.
1701 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1702 CROSS= AC_SUBST(CROSS)
1703 ALL=all.internal AC_SUBST(ALL)
1704 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1706 if test "x$with_build_sysroot" != x; then
1707 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1709 # This value is used, even on a native system, because
1710 # CROSS_SYSTEM_HEADER_DIR is just
1711 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1712 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1715 if test x$host != x$target
1717 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1719 SYSTEM_HEADER_DIR=$build_system_header_dir
1720 case "$host","$target" in
1721 # Darwin crosses can use the host system's libraries and headers,
1722 # because of the fat library support. Of course, it must be the
1723 # same version of Darwin on both sides. Allow the user to
1724 # just say --target=foo-darwin without a version number to mean
1725 # "the version on this system".
1726 *-*-darwin*,*-*-darwin*)
1727 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1728 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1729 if test $hostos = $targetos -o $targetos = darwin ; then
1731 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1736 i?86-*-*,x86_64-*-* \
1737 | powerpc*-*-*,powerpc64*-*-*)
1738 CROSS="$CROSS -DNATIVE_CROSS" ;;
1740 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1741 SYSTEM_HEADER_DIR=$build_system_header_dir
1744 # If this is a cross-compiler that does not
1745 # have its own set of headers then define
1748 # If this is using newlib, without having the headers available now,
1749 # then define inhibit_libc in LIBGCC2_CFLAGS.
1750 # This prevents libgcc2 from containing any code which requires libc
1753 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1754 test x$with_newlib = xyes ; } &&
1755 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1758 AC_SUBST(inhibit_libc)
1760 # When building gcc with a cross-compiler, we need to adjust things so
1761 # that the generator programs are still built with the native compiler.
1762 # Also, we cannot run fixincludes or fix-header.
1764 # These are the normal (build=host) settings:
1765 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1766 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1767 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1769 # Possibly disable fixproto, on a per-target basis.
1770 case ${use_fixproto} in
1775 STMP_FIXPROTO=stmp-fixproto
1778 AC_SUBST(STMP_FIXPROTO)
1780 # And these apply if build != host, or we are generating coverage data
1781 if test x$build != x$host || test "x$coverage_flags" != x
1783 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1785 if test "x$TARGET_SYSTEM_ROOT" = x; then
1786 if test "x$STMP_FIXPROTO" != x; then
1787 STMP_FIXPROTO=stmp-install-fixproto
1792 # Expand extra_headers to include complete path.
1793 # This substitutes for lots of t-* files.
1795 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1796 for file in ${extra_headers} ; do
1797 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1800 # Define collect2 in Makefile.
1801 case $host_can_use_collect2 in
1803 *) collect2='collect2$(exeext)' ;;
1805 AC_SUBST([collect2])
1807 # Add a definition of USE_COLLECT2 if system wants one.
1808 case $use_collect2 in
1809 no) use_collect2= ;;
1812 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1813 xm_defines="${xm_defines} USE_COLLECT2"
1814 case $host_can_use_collect2 in
1816 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1822 # ---------------------------
1823 # Assembler & linker features
1824 # ---------------------------
1826 # Identify the assembler which will work hand-in-glove with the newly
1827 # built GCC, so that we can examine its features. This is the assembler
1828 # which will be driven by the driver program.
1830 # If build != host, and we aren't building gas in-tree, we identify a
1831 # build->target assembler and hope that it will have the same features
1832 # as the host->target assembler we'll be using.
1833 gcc_cv_gas_major_version=
1834 gcc_cv_gas_minor_version=
1835 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1837 m4_pattern_allow([AS_FOR_TARGET])dnl
1838 AS_VAR_SET_IF(gcc_cv_as,, [
1839 if test -x "$DEFAULT_ASSEMBLER"; then
1840 gcc_cv_as="$DEFAULT_ASSEMBLER"
1841 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1842 && test -f ../gas/Makefile \
1843 && test x$build = x$host; then
1844 gcc_cv_as=../gas/as-new$build_exeext
1845 elif test -x as$build_exeext; then
1846 # Build using assembler in the current directory.
1847 gcc_cv_as=./as$build_exeext
1848 elif test -x $AS_FOR_TARGET; then
1849 gcc_cv_as="$AS_FOR_TARGET"
1851 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1854 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1855 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1857 AC_MSG_CHECKING(what assembler to use)
1858 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1859 # Single tree build which includes gas. We want to prefer it
1860 # over whatever linker top-level may have detected, since
1861 # we'll use what we're building after installation anyway.
1862 AC_MSG_RESULT(newly built gas)
1864 _gcc_COMPUTE_GAS_VERSION
1865 in_tree_gas_is_elf=no
1866 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1867 || (grep 'obj_format = multi' ../gas/Makefile \
1868 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1870 in_tree_gas_is_elf=yes
1873 AC_MSG_RESULT($gcc_cv_as)
1877 # Identify the linker which will work hand-in-glove with the newly
1878 # built GCC, so that we can examine its features. This is the linker
1879 # which will be driven by the driver program.
1881 # If build != host, and we aren't building gas in-tree, we identify a
1882 # build->target linker and hope that it will have the same features
1883 # as the host->target linker we'll be using.
1884 gcc_cv_gld_major_version=
1885 gcc_cv_gld_minor_version=
1886 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1887 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1889 AS_VAR_SET_IF(gcc_cv_ld,, [
1890 if test -x "$DEFAULT_LINKER"; then
1891 gcc_cv_ld="$DEFAULT_LINKER"
1892 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1893 && test -f ../ld/Makefile \
1894 && test x$build = x$host; then
1895 gcc_cv_ld=../ld/ld-new$build_exeext
1896 elif test -x collect-ld$build_exeext; then
1897 # Build using linker in the current directory.
1898 gcc_cv_ld=./collect-ld$build_exeext
1899 elif test -x $LD_FOR_TARGET; then
1900 gcc_cv_ld="$LD_FOR_TARGET"
1902 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1905 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1906 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1908 AC_MSG_CHECKING(what linker to use)
1909 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1910 # Single tree build which includes ld. We want to prefer it
1911 # over whatever linker top-level may have detected, since
1912 # we'll use what we're building after installation anyway.
1913 AC_MSG_RESULT(newly built ld)
1915 in_tree_ld_is_elf=no
1916 if (grep 'EMUL = .*elf' ../ld/Makefile \
1917 || grep 'EMUL = .*linux' ../ld/Makefile \
1918 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1919 in_tree_ld_is_elf=yes
1921 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
1924 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1925 if test x$gcc_cv_gld_version != x; then
1929 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1930 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1933 AC_MSG_RESULT($gcc_cv_ld)
1937 # Figure out what nm we will be using.
1938 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1939 AS_VAR_SET_IF(gcc_cv_nm,, [
1940 if test -f $gcc_cv_binutils_srcdir/configure.in \
1941 && test -f ../binutils/Makefile \
1942 && test x$build = x$host; then
1943 gcc_cv_nm=../binutils/nm-new$build_exeext
1944 elif test -x nm$build_exeext; then
1945 gcc_cv_nm=./nm$build_exeext
1946 elif test -x $NM_FOR_TARGET; then
1947 gcc_cv_nm="$NM_FOR_TARGET"
1949 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1952 AC_MSG_CHECKING(what nm to use)
1953 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1954 # Single tree build which includes binutils.
1955 AC_MSG_RESULT(newly built nm)
1958 AC_MSG_RESULT($gcc_cv_nm)
1962 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1963 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1965 # Figure out what objdump we will be using.
1966 AS_VAR_SET_IF(gcc_cv_objdump,, [
1967 if test -f $gcc_cv_binutils_srcdir/configure.in \
1968 && test -f ../binutils/Makefile \
1969 && test x$build = x$host; then
1970 # Single tree build which includes binutils.
1971 gcc_cv_objdump=../binutils/objdump$build_exeext
1972 elif test -x objdump$build_exeext; then
1973 gcc_cv_objdump=./objdump$build_exeext
1974 elif test -x $OBJDUMP_FOR_TARGET; then
1975 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1977 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1980 AC_MSG_CHECKING(what objdump to use)
1981 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1982 # Single tree build which includes binutils.
1983 AC_MSG_RESULT(newly built objdump)
1984 elif test x$gcc_cv_objdump = x; then
1985 AC_MSG_RESULT(not found)
1987 AC_MSG_RESULT($gcc_cv_objdump)
1990 # Figure out what assembler alignment features are present.
1991 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1995 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1996 [Define if your assembler supports .balign and .p2align.])])
1998 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2001 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2002 [Define if your assembler supports specifying the maximum number
2003 of bytes to skip when using the GAS .p2align command.])])
2005 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2008 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2009 [Define if your assembler supports .literal16.])])
2011 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2013 [conftest_label1: .word 0
2015 conftest_label2: .word 0
2017 [if test x$gcc_cv_nm != x; then
2018 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2019 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2020 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2022 else gcc_cv_as_subsection_m1=yes
2024 rm -f conftest.nm1 conftest.nm2
2026 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2027 [Define if your assembler supports .subsection and .subsection -1 starts
2028 emitting at the beginning of your section.])])
2030 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2033 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2035 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2037 [ .weakref foobar, barfnot],,
2038 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2040 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2043 .NSUBSPA $CODE$,COMDAT],,
2044 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2046 # .hidden needs to be supported in both the assembler and the linker,
2047 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2048 # This is irritatingly difficult to feature test for; we have to check the
2049 # date string after the version number. If we've got an in-tree
2050 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2052 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2053 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2058 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2059 [if test $in_tree_ld = yes ; then
2061 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2062 && test $in_tree_ld_is_elf = yes; then
2063 gcc_cv_ld_hidden=yes
2066 gcc_cv_ld_hidden=yes
2067 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2068 if echo "$ld_ver" | grep GNU > /dev/null; then
2070 ld_vers=`echo $ld_ver | sed -n \
2071 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2072 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2073 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2074 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2075 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2076 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2077 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2078 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2079 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2080 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2081 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2082 if test 0"$ld_date" -lt 20020404; then
2083 if test -n "$ld_date"; then
2084 # If there was date string, but was earlier than 2002-04-04, fail
2086 elif test -z "$ld_vers"; then
2087 # If there was no date string nor ld version number, something is wrong
2090 test -z "$ld_vers_patch" && ld_vers_patch=0
2091 if test "$ld_vers_major" -lt 2; then
2093 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2094 gcc_cv_ld_hidden="no"
2095 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2103 hppa64*-*-hpux* | ia64*-*-hpux*)
2104 gcc_cv_ld_hidden=yes
2112 libgcc_visibility=no
2113 AC_SUBST(libgcc_visibility)
2114 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2115 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2116 libgcc_visibility=yes
2117 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2118 [Define if your assembler and linker support .hidden.])
2121 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2122 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2130 [# GAS versions before 2.11 do not support uleb128,
2131 # despite appearing to.
2132 # ??? There exists an elf-specific test that will crash
2133 # the assembler. Perhaps it's better to figure out whether
2134 # arbitrary sections are supported and try the test.
2135 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2136 if echo "$as_ver" | grep GNU > /dev/null; then
2138 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2139 as_major=`echo $as_ver | sed 's/\..*//'`
2140 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2142 if test $as_major -eq 2 && test $as_minor -lt 11
2144 else gcc_cv_as_leb128=yes
2147 [AC_DEFINE(HAVE_AS_LEB128, 1,
2148 [Define if your assembler supports .sleb128 and .uleb128.])])
2150 # GAS versions up to and including 2.11.0 may mis-optimize
2152 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2160 .section .eh_frame,"aw",@progbits
2162 .4byte .LECIE1-.LSCIE1
2176 .4byte .LEFDE1-.LASFDE1
2178 .4byte .LASFDE1-__FRAME_BEGIN__
2186 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2187 cat > conftest.lit <<EOF
2188 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2189 0010 01000000 12000000 18000000 00000000 ................
2190 0020 08000000 04080000 0044 .........D @&t@
2192 cat > conftest.big <<EOF
2193 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2194 0010 00000001 00000012 00000018 00000000 ................
2195 0020 00000008 04000000 0844 .........D @&t@
2197 # If the assembler didn't choke, and we can objdump,
2198 # and we got the correct data, then succeed.
2199 # The text in the here-document typically retains its unix-style line
2200 # endings, while the output of objdump will use host line endings.
2201 # Therefore, use diff -b for the comparisons.
2202 if test x$gcc_cv_objdump != x \
2203 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2204 | tail -3 > conftest.got \
2205 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2206 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2208 gcc_cv_as_eh_frame=yes
2209 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2210 gcc_cv_as_eh_frame=buggy
2212 # Uh oh, what do we do now?
2213 gcc_cv_as_eh_frame=no
2216 if test $gcc_cv_as_eh_frame = buggy; then
2217 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2218 [Define if your assembler mis-optimizes .eh_frame data.])
2221 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2222 [elf,2,12,0], [--fatal-warnings],
2223 [.section .rodata.str, "aMS", @progbits, 1])
2224 if test $gcc_cv_as_shf_merge = no; then
2225 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2226 [elf,2,12,0], [--fatal-warnings],
2227 [.section .rodata.str, "aMS", %progbits, 1])
2229 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2230 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2231 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2233 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2234 [elf,2,16,0], [--fatal-warnings],
2235 [.section .text,"axG",@progbits,.foo,comdat])
2236 if test $gcc_cv_as_comdat_group = yes; then
2237 gcc_cv_as_comdat_group_percent=no
2239 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2240 [elf,2,16,0], [--fatal-warnings],
2241 [.section .text,"axG",%progbits,.foo,comdat])
2243 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2245 if test 0"$ld_date" -lt 20050308; then
2246 if test -n "$ld_date"; then
2247 # If there was date string, but was earlier than 2005-03-08, fail
2249 elif test "$ld_vers_major" -lt 2; then
2251 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2256 # assume linkers other than GNU ld don't support COMDAT group
2259 if test $comdat_group = no; then
2260 gcc_cv_as_comdat_group=no
2261 gcc_cv_as_comdat_group_percent=no
2263 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2264 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2265 [Define 0/1 if your assembler and linker support COMDAT groups.])
2267 # Thread-local storage - the check is heavily parametrized.
2276 .section ".tdata","awT",@progbits
2279 ldq $27,__tls_get_addr($29) !literal!1
2280 lda $16,foo($29) !tlsgd!1
2281 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2282 ldq $27,__tls_get_addr($29) !literal!2
2283 lda $16,foo($29) !tlsldm!2
2284 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2285 ldq $1,foo($29) !gotdtprel
2286 ldah $2,foo($29) !dtprelhi
2287 lda $3,foo($2) !dtprello
2288 lda $4,foo($29) !dtprel
2289 ldq $1,foo($29) !gottprel
2290 ldah $2,foo($29) !tprelhi
2291 lda $3,foo($2) !tprello
2292 lda $4,foo($29) !tprel'
2295 tls_as_opt=--fatal-warnings
2299 .section ".tdata","awT",@progbits
2311 .section ".tdata","awT",@progbits
2315 addil LT%foo-$tls_gdidx$,gp
2316 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2319 addil LT%foo-$tls_ldidx$,gp
2321 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2322 addil LR%foo-$tls_dtpoff$,%ret0
2323 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2325 addil LT%foo-$tls_ieoff$,gp
2326 ldw RT%foo-$tls_ieoff$(%r1),%t2
2329 addil LR%foo-$tls_leoff$,%t1
2330 ldo RR%foo-$tls_leoff$(%r1),%t2'
2333 tls_as_opt=--fatal-warnings
2337 .section ".tdata","awT",%progbits
2350 .section ".tdata","awT",@progbits
2354 leal foo@TLSGD(,%ebx,1), %eax
2355 leal foo@TLSLDM(%ebx), %eax
2356 leal foo@DTPOFF(%eax), %edx
2357 movl foo@GOTTPOFF(%ebx), %eax
2358 subl foo@GOTTPOFF(%ebx), %eax
2359 addl foo@GOTNTPOFF(%ebx), %eax
2360 movl foo@INDNTPOFF, %eax
2361 movl $foo@TPOFF, %eax
2362 subl $foo@TPOFF, %eax
2363 leal foo@NTPOFF(%ecx), %eax'
2366 tls_as_opt=--fatal-warnings
2370 .section ".tdata","awT",@progbits
2374 leaq foo@TLSGD(%rip), %rdi
2375 leaq foo@TLSLD(%rip), %rdi
2376 leaq foo@DTPOFF(%rax), %rdx
2377 movq foo@GOTTPOFF(%rip), %rax
2378 movq $foo@TPOFF, %rax'
2381 tls_as_opt=--fatal-warnings
2385 .section ".tdata","awT",@progbits
2388 addl r16 = @ltoff(@dtpmod(foo#)), gp
2389 addl r17 = @ltoff(@dtprel(foo#)), gp
2390 addl r18 = @ltoff(@tprel(foo#)), gp
2391 addl r19 = @dtprel(foo#), gp
2392 adds r21 = @dtprel(foo#), r13
2393 movl r23 = @dtprel(foo#)
2394 addl r20 = @tprel(foo#), gp
2395 adds r22 = @tprel(foo#), r13
2396 movl r24 = @tprel(foo#)'
2399 tls_as_opt=--fatal-warnings
2403 .section .tdata,"awT",@progbits
2407 addiu $4, $28, %tlsgd(x)
2408 addiu $4, $28, %tlsldm(x)
2409 lui $4, %dtprel_hi(x)
2410 addiu $4, $4, %dtprel_lo(x)
2411 lw $4, %gottprel(x)($28)
2412 lui $4, %tprel_hi(x)
2413 addiu $4, $4, %tprel_lo(x)'
2416 tls_as_opt='-32 --fatal-warnings'
2420 .section ".tdata","awT",@progbits
2428 addi 3,31,ld0@got@tlsgd
2430 addi 3,31,x1@got@tlsld
2433 addis 9,3,x2@dtprel@ha
2434 addi 9,9,x2@dtprel@l
2435 lwz 9,x3@got@tprel(31)
2438 addis 9,2,x2@tprel@ha
2439 addi 9,9,x2@tprel@l'
2442 tls_as_opt="-a32 --fatal-warnings"
2446 .section ".tdata","awT",@progbits
2454 addi 3,2,ld0@got@tlsgd
2460 addi 3,2,x1@got@tlsld
2466 addis 9,3,x2@dtprel@ha
2467 addi 9,9,x2@dtprel@l
2470 ld 9,x3@got@dtprel(2)
2476 tls_as_opt="-a64 --fatal-warnings"
2480 .section ".tdata","awT",@progbits
2489 l %r1,foo@GOTNTPOFF(%r12)
2490 l %r1,0(%r1):tls_load:foo
2491 bas %r14,0(%r1,%r13):tls_gdcall:foo
2492 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2495 tls_as_opt="-m31 --fatal-warnings"
2499 .section ".tdata","awT",@progbits
2507 lg %r1,foo@GOTNTPOFF(%r12)
2508 larl %r1,foo@INDNTPOFF
2509 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2510 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2513 tls_as_opt="-m64 -Aesame --fatal-warnings"
2515 sh-*-* | sh[34]-*-*)
2517 .section ".tdata","awT",@progbits
2527 tls_as_opt=--fatal-warnings
2531 sparc*-sun-solaris2.[56789]*)
2532 # TLS was introduced in the Solaris 9 4/04 release but
2533 # we do not enable it by default on Solaris 9 either.
2534 if test "x$enable_tls" = xyes ; then
2540 sparc*-sun-solaris2.*)
2547 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2549 .section ".tdata",#alloc,#write,#tls
2552 sethi %tgd_hi22(foo), %o0
2553 add %o0, %tgd_lo10(foo), %o1
2554 add %l7, %o1, %o0, %tgd_add(foo)
2555 call __tls_get_addr, %tgd_call(foo)
2556 sethi %tldm_hi22(foo), %l1
2557 add %l1, %tldm_lo10(foo), %l2
2558 add %l7, %l2, %o0, %tldm_add(foo)
2559 call __tls_get_addr, %tldm_call(foo)
2560 sethi %tldo_hix22(foo), %l3
2561 xor %l3, %tldo_lox10(foo), %l4
2562 add %o0, %l4, %l5, %tldo_add(foo)
2563 sethi %tie_hi22(foo), %o3
2564 add %o3, %tie_lo10(foo), %o3
2565 ld [%l7 + %o3], %o2, %tie_ld(foo)
2566 add %g7, %o2, %o4, %tie_add(foo)
2567 sethi %tle_hix22(foo), %l1
2568 xor %l1, %tle_lox10(foo), %o5
2569 ld [%g7 + %o5], %o1'
2574 .section ".tdata","awT",@progbits
2577 sethi %tgd_hi22(foo), %o0
2578 add %o0, %tgd_lo10(foo), %o1
2579 add %l7, %o1, %o0, %tgd_add(foo)
2580 call __tls_get_addr, %tgd_call(foo)
2581 sethi %tldm_hi22(foo), %l1
2582 add %l1, %tldm_lo10(foo), %l2
2583 add %l7, %l2, %o0, %tldm_add(foo)
2584 call __tls_get_addr, %tldm_call(foo)
2585 sethi %tldo_hix22(foo), %l3
2586 xor %l3, %tldo_lox10(foo), %l4
2587 add %o0, %l4, %l5, %tldo_add(foo)
2588 sethi %tie_hi22(foo), %o3
2589 add %o3, %tie_lo10(foo), %o3
2590 ld [%l7 + %o3], %o2, %tie_ld(foo)
2591 add %g7, %o2, %o4, %tie_add(foo)
2592 sethi %tle_hix22(foo), %l1
2593 xor %l1, %tle_lox10(foo), %o5
2594 ld [%g7 + %o5], %o1'
2597 tls_as_opt="-32 --fatal-warnings"
2603 if test "x$enable_tls" = xno ; then
2604 : # TLS explicitly disabled.
2605 elif test "x$enable_tls" = xyes ; then
2606 set_have_as_tls=yes # TLS explicitly enabled.
2607 elif test -z "$tls_first_major"; then
2608 : # If we don't have a check, assume no support.
2610 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2611 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2612 [set_have_as_tls=yes])
2614 if test $set_have_as_tls = yes ; then
2615 AC_DEFINE(HAVE_AS_TLS, 1,
2616 [Define if your assembler supports thread-local storage.])
2619 # Target-specific assembler checks.
2621 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2622 gcc_cv_ld_static_dynamic=no
2623 if test $in_tree_ld = yes ; then
2624 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2625 gcc_cv_ld_static_dynamic=yes
2627 elif test x$gcc_cv_ld != x; then
2628 # Check if linker supports -Bstatic/-Bdynamic option
2629 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2630 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2631 gcc_cv_ld_static_dynamic=yes
2634 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2635 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2636 [Define if your linker supports -Bstatic/-Bdynamic option.])
2638 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2640 if test x"$demangler_in_ld" = xyes; then
2641 AC_MSG_CHECKING(linker --demangle support)
2642 gcc_cv_ld_demangle=no
2643 if test $in_tree_ld = yes; then
2644 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2645 gcc_cv_ld_demangle=yes
2647 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2648 # Check if the GNU linker supports --demangle option
2649 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2650 gcc_cv_ld_demangle=yes
2653 if test x"$gcc_cv_ld_demangle" = xyes; then
2654 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2655 [Define if your linker supports --demangle option.])
2657 AC_MSG_RESULT($gcc_cv_ld_demangle)
2661 # All TARGET_ABI_OSF targets.
2662 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2663 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2664 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2667 extbl $3, $2, $3 !lituse_bytoff!1
2668 ldq $2, a($29) !literal!1
2669 ldq $4, b($29) !literal!2
2670 ldq_u $3, 0($2) !lituse_base!1
2671 ldq $27, f($29) !literal!5
2672 jsr $26, ($27), f !lituse_jsr!5
2673 ldah $29, 0($26) !gpdisp!3
2674 lda $0, c($29) !gprel
2675 ldah $1, d($29) !gprelhigh
2676 lda $1, d($1) !gprellow
2677 lda $29, 0($29) !gpdisp!3],,
2678 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2679 [Define if your assembler supports explicit relocations.])])
2680 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2681 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2684 ldq $27, a($29) !literal!1
2685 jsr $26, ($27), a !lituse_jsrdirect!1],,
2686 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2687 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2691 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2692 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2693 [-no-mul-bug-abort], [.text],,
2694 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2695 [Define if your assembler supports the -no-mul-bug-abort option.])])
2699 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2700 [.register %g2, #scratch],,
2701 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2702 [Define if your assembler supports .register.])])
2704 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2706 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2707 [Define if your assembler supports -relax option.])])
2709 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2710 gcc_cv_as_sparc_ua_pcrel,,
2718 .uaword %r_disp32(foo)],
2719 [if test x$gcc_cv_ld != x \
2720 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2721 gcc_cv_as_sparc_ua_pcrel=yes
2724 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2725 [Define if your assembler and linker support unaligned PC relative relocs.])
2727 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2728 gcc_cv_as_sparc_ua_pcrel_hidden,,
2733 .uaword %r_disp32(foo)
2734 .byte 0x32, 0x33, 0x34
2739 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2740 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2741 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2742 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2743 if $gcc_cv_objdump -R conftest 2> /dev/null \
2744 | grep 'DISP32' > /dev/null 2>&1; then
2747 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2751 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2752 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2753 ]) # unaligned pcrel relocs
2755 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2756 gcc_cv_as_sparc_offsetable_lo10,,
2759 or %g1, %lo(ab) + 12, %g1
2760 or %g1, %lo(ab + 12), %g1],
2761 [if test x$gcc_cv_objdump != x \
2762 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2763 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2764 gcc_cv_as_sparc_offsetable_lo10=yes
2766 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2767 [Define if your assembler supports offsetable %lo().])])
2771 i[34567]86-*-* | x86_64-*-*)
2774 cygwin* | pe | mingw32*)
2775 # Used for DWARF 2 in PE
2776 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2777 gcc_cv_as_ix86_pe_secrel32,
2783 [if test x$gcc_cv_ld != x \
2784 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2785 gcc_cv_as_ix86_pe_secrel32=yes
2788 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2789 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2793 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2794 gcc_cv_as_ix86_filds_fists,
2795 [2,9,0],, [filds mem; fists mem],,
2796 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2797 [Define if your assembler uses the new HImode fild and fist notation.])])
2799 gcc_GAS_CHECK_FEATURE([cmov syntax],
2800 gcc_cv_as_ix86_cmov_sun_syntax,,,
2801 [cmovl.l %edx, %eax],,
2802 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2803 [Define if your assembler supports the Sun syntax for cmov.])])
2805 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2806 gcc_cv_as_ix86_ffreep,,,
2808 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2809 [Define if your assembler supports the ffreep mnemonic.])])
2811 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2812 gcc_cv_as_ix86_sahf,,,
2814 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2815 [Define if your assembler supports the sahf mnemonic.])])
2817 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2818 gcc_cv_as_ix86_diff_sect_delta,,,
2826 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2827 [Define if your assembler supports the subtraction of symbols in different sections.])])
2829 # This one is used unconditionally by i386.[ch]; it is to be defined
2830 # to 1 if the feature is present, 0 otherwise.
2831 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2832 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2838 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2839 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2840 [Define true if the assembler supports '.long foo@GOTOFF'.])
2844 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2845 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2847 addl r15 = @ltoffx(x#), gp
2849 ld8.mov r16 = [[r15]], x#],,
2850 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2851 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2857 *-*-aix*) conftest_s=' .machine "pwr5"
2861 gcc_GAS_CHECK_FEATURE([.machine directive support],
2862 gcc_cv_as_machine_directive,,,
2863 [ .machine ppc7400])
2864 if test x$gcc_cv_as_machine_directive != xyes; then
2865 echo "*** This target requires an assembler supporting \".machine\"" >&2
2866 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2867 test x$build = x$target && exit 1
2871 *) conftest_s=' .machine power4
2876 gcc_GAS_CHECK_FEATURE([mfcr field support],
2877 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2879 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2880 [Define if your assembler supports mfcr field.])])
2883 *-*-aix*) conftest_s=' .machine "pwr5"
2886 *) conftest_s=' .machine power5
2891 gcc_GAS_CHECK_FEATURE([popcntb support],
2892 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2894 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2895 [Define if your assembler supports popcntb field.])])
2898 *-*-aix*) conftest_s=' .machine "pwr5x"
2901 *) conftest_s=' .machine power5
2906 gcc_GAS_CHECK_FEATURE([fp round support],
2907 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2909 [AC_DEFINE(HAVE_AS_FPRND, 1,
2910 [Define if your assembler supports fprnd.])])
2913 *-*-aix*) conftest_s=' .machine "pwr6"
2916 *) conftest_s=' .machine power6
2921 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2922 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2924 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2925 [Define if your assembler supports mffgpr and mftgpr.])])
2928 *-*-aix*) conftest_s=' .csect .text[[PR]]
2930 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2934 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2935 *) conftest_s=' .text
2937 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2940 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2941 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2943 [AC_DEFINE(HAVE_AS_REL16, 1,
2944 [Define if your assembler supports R_PPC_REL16 relocs.])])
2947 *-*-aix*) conftest_s=' .machine "pwr6"
2950 *) conftest_s=' .machine power6
2955 gcc_GAS_CHECK_FEATURE([compare bytes support],
2956 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2958 [AC_DEFINE(HAVE_AS_CMPB, 1,
2959 [Define if your assembler supports cmpb.])])
2962 *-*-aix*) conftest_s=' .machine "pwr6"
2965 *) conftest_s=' .machine power6
2970 gcc_GAS_CHECK_FEATURE([decimal float support],
2971 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2973 [AC_DEFINE(HAVE_AS_DFP, 1,
2974 [Define if your assembler supports DFP instructions.])])
2978 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2979 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2980 [ lw $4,%gp_rel(foo)($4)],,
2981 [if test x$target_cpu_default = x
2982 then target_cpu_default=MASK_EXPLICIT_RELOCS
2983 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2985 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2986 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2987 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2988 [Define if the assembler understands -mno-shared.])])
2992 # Mips and HP-UX need the GNU assembler.
2993 # Linux on IA64 might be able to use the Intel assembler.
2996 mips*-*-* | *-*-hpux* )
2997 if test x$gas_flag = xyes \
2998 || test x"$host" != x"$build" \
2999 || test ! -x "$gcc_cv_as" \
3000 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3003 echo "*** This configuration requires the GNU assembler" >&2
3009 # ??? Not all targets support dwarf2 debug_line, even within a version
3010 # of gas. Moreover, we need to emit a valid instruction to trigger any
3011 # info to the output file. So, as supported targets are added to gas 2.11,
3012 # add some instruction here to (also) show we expect this might work.
3013 # ??? Once 2.11 is released, probably need to add first known working
3014 # version to the per-target configury.
3016 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3017 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3018 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3021 ia64*-*-* | s390*-*-*)
3028 if test x"$insn" != x; then
3030 .file 1 \"conftest.s\"
3033 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3034 gcc_cv_as_dwarf2_debug_line,
3035 [elf,2,11,0],, [$conftest_s],
3036 [if test x$gcc_cv_objdump != x \
3037 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3038 | grep debug_line > /dev/null 2>&1; then
3039 gcc_cv_as_dwarf2_debug_line=yes
3042 # The .debug_line file table must be in the exact order that
3043 # we specified the files, since these indices are also used
3044 # by DW_AT_decl_file. Approximate this test by testing if
3045 # the assembler bitches if the same index is assigned twice.
3046 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3047 gcc_cv_as_dwarf2_file_buggy,,,
3051 if test $gcc_cv_as_dwarf2_debug_line = yes \
3052 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3053 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3054 [Define if your assembler supports dwarf2 .file/.loc directives,
3055 and preserves file table indices exactly as given.])
3058 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3059 gcc_cv_as_gdwarf2_flag,
3060 [elf,2,11,0], [--gdwarf2], [$insn],,
3061 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3062 [Define if your assembler supports the --gdwarf2 option.])])
3064 gcc_GAS_CHECK_FEATURE([--gstabs option],
3065 gcc_cv_as_gstabs_flag,
3066 [elf,2,11,0], [--gstabs], [$insn],
3067 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3068 # and warns about it, but still exits successfully. So check for
3070 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3072 else gcc_cv_as_gstabs_flag=yes
3074 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3075 [Define if your assembler supports the --gstabs option.])])
3078 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3079 [gcc_cv_as_line_zero],
3080 [gcc_cv_as_line_zero=no
3081 if test $in_tree_gas = yes; then
3082 gcc_GAS_VERSION_GTE_IFELSE([elf,2,16,91], [gcc_cv_as_line_zero=yes])
3083 elif test "x$gcc_cv_as" != x; then
3084 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3085 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3086 test "x`cat conftest.out`" = x
3088 gcc_cv_as_line_zero=yes
3090 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3091 cat conftest.s >&AS_MESSAGE_LOG_FD
3092 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3093 cat conftest.out >&AS_MESSAGE_LOG_FD
3095 rm -f conftest.o conftest.s conftest.out
3097 if test "x$gcc_cv_as_line_zero" = xyes; then
3098 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3099 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3102 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3103 gcc_cv_ld_ro_rw_mix=unknown
3104 if test $in_tree_ld = yes ; then
3105 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3106 && test $in_tree_ld_is_elf = yes; then
3107 gcc_cv_ld_ro_rw_mix=read-write
3109 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3110 echo '.section myfoosect, "a"' > conftest1.s
3111 echo '.section myfoosect, "aw"' > conftest2.s
3112 echo '.byte 1' >> conftest2.s
3113 echo '.section myfoosect, "a"' > conftest3.s
3114 echo '.byte 0' >> conftest3.s
3115 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3116 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3117 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3118 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3119 conftest2.o conftest3.o > /dev/null 2>&1; then
3120 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3121 | sed -e '/myfoosect/!d' -e N`
3122 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3123 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3124 gcc_cv_ld_ro_rw_mix=read-only
3126 gcc_cv_ld_ro_rw_mix=read-write
3131 rm -f conftest.* conftest[123].*
3134 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3135 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3136 [Define if your linker links a mix of read-only
3137 and read-write sections into a read-write section.])
3139 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3141 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3142 gcc_cv_ld_eh_frame_hdr=no
3143 if test $in_tree_ld = yes ; then
3144 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3145 && test $in_tree_ld_is_elf = yes; then
3146 gcc_cv_ld_eh_frame_hdr=yes
3148 elif test x$gcc_cv_ld != x; then
3149 # Check if linker supports --eh-frame-hdr option
3150 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3151 gcc_cv_ld_eh_frame_hdr=yes
3154 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3155 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3156 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3157 [Define if your linker supports --eh-frame-hdr option.])
3159 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3161 AC_MSG_CHECKING(linker position independent executable support)
3163 if test $in_tree_ld = yes ; then
3164 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3165 && test $in_tree_ld_is_elf = yes; then
3168 elif test x$gcc_cv_ld != x; then
3169 # Check if linker supports -pie option
3170 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3174 if test x"$gcc_cv_ld_pie" = xyes; then
3175 AC_DEFINE(HAVE_LD_PIE, 1,
3176 [Define if your linker supports -pie option.])
3178 AC_MSG_RESULT($gcc_cv_ld_pie)
3180 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3181 gcc_cv_ld_eh_gc_sections=no
3182 if test $in_tree_ld = yes ; then
3183 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3184 && test $in_tree_ld_is_elf = yes; then
3185 gcc_cv_ld_eh_gc_sections=yes
3187 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3188 cat > conftest.s <<EOF
3191 .type _start, @function
3194 .size _start, .-_start
3195 .section .text.foo,"ax",@progbits
3196 .type foo, @function
3200 .section .gcc_except_table.foo,"a",@progbits
3203 .section .eh_frame,"a",@progbits
3206 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3207 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3208 | grep "gc-sections option ignored" > /dev/null; then
3209 gcc_cv_ld_eh_gc_sections=no
3210 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3211 gcc_cv_ld_eh_gc_sections=yes
3212 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3213 if test x$gcc_cv_as_comdat_group != xyes; then
3214 gcc_cv_ld_eh_gc_sections=no
3215 cat > conftest.s <<EOF
3218 .type _start, @function
3221 .size _start, .-_start
3222 .section .gnu.linkonce.t.foo,"ax",@progbits
3223 .type foo, @function
3227 .section .gcc_except_table.foo,"a",@progbits
3230 .section .eh_frame,"a",@progbits
3233 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3234 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3235 | grep "gc-sections option ignored" > /dev/null; then
3236 gcc_cv_ld_eh_gc_sections=no
3237 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3238 gcc_cv_ld_eh_gc_sections=yes
3244 rm -f conftest.s conftest.o conftest
3248 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3249 gcc_cv_ld_eh_gc_sections=no
3252 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3253 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3254 [Define if your linker supports garbage collection of
3255 sections in presence of EH frames.])
3257 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3263 AC_CACHE_CHECK(linker --as-needed support,
3264 gcc_cv_ld_as_needed,
3265 [gcc_cv_ld_as_needed=no
3266 if test $in_tree_ld = yes ; then
3267 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3268 && test $in_tree_ld_is_elf = yes; then
3269 gcc_cv_ld_as_needed=yes
3271 elif test x$gcc_cv_ld != x; then
3272 # Check if linker supports --as-needed and --no-as-needed options
3273 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3274 gcc_cv_ld_as_needed=yes
3278 if test x"$gcc_cv_ld_as_needed" = xyes; then
3279 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3280 [Define if your linker supports --as-needed and --no-as-needed options.])
3283 case "$target:$tm_file" in
3284 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3285 AC_CACHE_CHECK(linker support for omitting dot symbols,
3286 gcc_cv_ld_no_dot_syms,
3287 [gcc_cv_ld_no_dot_syms=no
3288 if test $in_tree_ld = yes ; then
3289 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3290 gcc_cv_ld_no_dot_syms=yes
3292 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3293 cat > conftest1.s <<EOF
3297 cat > conftest2.s <<EOF
3298 .section ".opd","aw"
3303 .quad .LEfoo,.TOC.@tocbase,0
3309 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3310 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3311 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3312 gcc_cv_ld_no_dot_syms=yes
3314 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3317 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3318 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3319 [Define if your PowerPC64 linker only needs function descriptor syms.])
3324 AC_CACHE_CHECK(linker --sysroot support,
3326 [gcc_cv_ld_sysroot=no
3327 if test $in_tree_ld = yes ; then
3328 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3329 gcc_cv_ld_sysroot=yes
3331 elif test x$gcc_cv_ld != x; then
3332 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3333 gcc_cv_ld_sysroot=yes
3336 if test x"$gcc_cv_ld_sysroot" = xyes; then
3337 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3338 [Define if your linker supports --sysroot.])
3341 if test x$with_sysroot = x && test x$host = x$target \
3342 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3343 && test "$prefix" != "NONE"; then
3344 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3345 [Define to PREFIX/include if cpp should also search that directory.])
3348 # Test for stack protector support in target C library.
3349 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3350 gcc_cv_libc_provides_ssp,
3351 [gcc_cv_libc_provides_ssp=no
3354 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3355 if test "x$with_sysroot" = x; then
3356 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3357 elif test "x$with_build_sysroot" != "x"; then
3358 glibc_header_dir="${with_build_sysroot}/usr/include"
3359 elif test "x$with_sysroot" = xyes; then
3360 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3362 glibc_header_dir="${with_sysroot}/usr/include"
3365 glibc_header_dir=/usr/include
3367 # glibc 2.4 and later provides __stack_chk_fail and
3368 # either __stack_chk_guard, or TLS access to stack guard canary.
3369 if test -f $glibc_header_dir/features.h \
3370 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3371 $glibc_header_dir/features.h > /dev/null; then
3372 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3373 $glibc_header_dir/features.h > /dev/null; then
3374 gcc_cv_libc_provides_ssp=yes
3375 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3376 $glibc_header_dir/features.h > /dev/null \
3377 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3378 $glibc_header_dir/features.h > /dev/null; then
3379 gcc_cv_libc_provides_ssp=yes
3384 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3385 [echo "no __stack_chk_fail on this target"])
3387 *) gcc_cv_libc_provides_ssp=no ;;
3390 if test x$gcc_cv_libc_provides_ssp = xyes; then
3391 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3392 [Define if your target C library provides stack protector support])
3395 # Check if TFmode long double should be used by default or not.
3396 # Some glibc targets used DFmode long double, but with glibc 2.4
3397 # and later they can use TFmode.
3399 powerpc*-*-*gnu* | \
3403 AC_ARG_WITH(long-double-128,
3404 [ --with-long-double-128 Use 128-bit long double by default.],
3405 gcc_cv_target_ldbl128="$with_long_double_128",
3406 [gcc_cv_target_ldbl128=no
3407 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3408 if test "x$with_sysroot" = x; then
3409 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3410 elif test "x$with_build_sysroot" != "x"; then
3411 glibc_header_dir="${with_build_sysroot}/usr/include"
3412 elif test "x$with_sysroot" = xyes; then
3413 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3415 glibc_header_dir="${with_sysroot}/usr/include"
3418 glibc_header_dir=/usr/include
3421 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3422 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3423 && gcc_cv_target_ldbl128=yes
3428 if test x$gcc_cv_target_ldbl128 = xyes; then
3429 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3430 [Define if TFmode long double should be the default])
3433 # Find out what GC implementation we want, or may, use.
3435 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3443 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3446 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3451 echo "Using $GGC for garbage collection."
3453 # Use the system's zlib library.
3455 zlibinc="-I\$(srcdir)/../zlib"
3456 AC_ARG_WITH(system-zlib,
3457 [ --with-system-zlib use installed libz],
3464 dnl Very limited version of automake's enable-maintainer-mode
3466 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3467 dnl maintainer-mode is disabled by default
3468 AC_ARG_ENABLE(maintainer-mode,
3469 [ --enable-maintainer-mode
3470 enable make rules and dependencies not useful
3471 (and sometimes confusing) to the casual installer],
3472 maintainer_mode=$enableval,
3475 AC_MSG_RESULT($maintainer_mode)
3477 if test "$maintainer_mode" = "yes"; then
3488 # Make empty files to contain the specs and options for each language.
3489 # Then add #include lines to for a compiler that has specs and/or options.
3495 # These (without "all_") are set in each config-lang.in.
3496 # `language' must be a single word so is spelled singularly.
3499 all_outputs='Makefile gccbug libada-mk'
3500 # List of language makefile fragments.
3502 # List of language subdirectory makefiles. Deprecated.
3504 # Files for gengtype
3505 all_gtfiles="$target_gtfiles"
3506 # Files for gengtype with language
3507 all_gtfiles_files_langs=
3508 all_gtfiles_files_files=
3510 # These are the languages that are set in --enable-languages,
3511 # and are available in the GCC tree.
3512 all_selected_languages=
3514 # Add the language fragments.
3515 # Languages are added via two mechanisms. Some information must be
3516 # recorded in makefile variables, these are defined in config-lang.in.
3517 # We accumulate them and plug them into the main Makefile.
3518 # The other mechanism is a set of hooks for each of the main targets
3519 # like `clean', `install', etc.
3521 language_hooks="Make-hooks"
3523 for lang in ${srcdir}/*/config-lang.in
3526 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3528 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3529 if test "x$lang_alias" = x
3531 echo "$lang doesn't set \$language." 1>&2
3534 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3535 subdirs="$subdirs $subdir"
3536 case ",$enable_languages," in
3538 all_selected_languages="$all_selected_languages $lang_alias"
3539 if test -f $srcdir/$subdir/lang-specs.h; then
3540 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3552 . ${srcdir}/$subdir/config-lang.in
3553 if test "x$language" = x
3555 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3560 case ",$enable_languages," in
3563 for i in $subdir_requires; do
3564 test -f "${srcdir}/$i/config-lang.in" && continue
3572 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3573 if test -f $srcdir/$subdir/lang.opt; then
3574 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3576 if test -f $srcdir/$subdir/$subdir-tree.def; then
3577 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3579 if test -f ${srcdir}/$subdir/Makefile.in
3580 then all_lang_makefiles="$subdir/Makefile"
3582 all_languages="$all_languages $language"
3583 all_compilers="$all_compilers $compilers"
3584 all_outputs="$all_outputs $outputs"
3585 all_gtfiles="$all_gtfiles $gtfiles"
3588 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3589 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3593 # Pick up gtfiles for c
3596 . ${srcdir}/c-config-lang.in
3597 all_gtfiles="$all_gtfiles $gtfiles"
3600 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3601 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3605 for language in $all_selected_languages
3607 check_languages="$check_languages check-$language"
3610 # We link each language in with a set of hooks, reached indirectly via
3611 # lang.${target}. Only do so for selected languages.
3615 target_list="all.cross start.encap rest.encap tags \
3616 install-common install-man install-info install-pdf dvi pdf \
3617 html uninstall info man srcextra srcman srcinfo \
3618 mostlyclean clean distclean maintainer-clean"
3620 for t in $target_list
3623 for lang in $all_selected_languages
3627 echo "lang.$t: $x" >> Make-hooks
3636 echo "dir ." > .gdbinit
3637 echo "dir ${srcdir}" >> .gdbinit
3638 if test x$gdb_needs_out_file_path = xyes
3640 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3642 if test "x$subdirs" != x; then
3645 echo "dir ${srcdir}/$s" >> .gdbinit
3648 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3650 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3651 # absolute path for gcc_tooldir based on inserting the number of up-directory
3652 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3653 # $(libsubdir)/@(unlibsubdir) based path.
3654 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3655 # make and thus we'd get different behavior depending on where we built the
3657 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3658 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3660 changequote(<<, >>)dnl
3661 # An explanation of the sed strings:
3662 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3663 # -e 's|/$||' match a trailing forward slash and eliminates it
3664 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3665 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3667 # (*) Note this pattern overwrites the first character of the string
3668 # with a forward slash if one is not already present. This is not a
3669 # problem because the exact names of the sub-directories concerned is
3670 # unimportant, just the number of them matters.
3672 # The practical upshot of these patterns is like this:
3674 # prefix exec_prefix result
3675 # ------ ----------- ------
3677 # /foo/ /foo/bar ../
3678 # /foo /foo/bar/ ../
3679 # /foo/ /foo/bar/ ../
3680 # /foo /foo/bar/ugg ../../
3683 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3684 changequote([, ])dnl
3686 AC_SUBST(gcc_tooldir)
3689 # Find a directory in which to install a shared libgcc.
3691 AC_ARG_ENABLE(version-specific-runtime-libs,
3692 [ --enable-version-specific-runtime-libs
3693 specify that runtime libraries should be
3694 installed in a compiler-specific directory])
3696 AC_ARG_WITH(slibdir,
3697 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3698 slibdir="$with_slibdir",
3699 if test "${enable_version_specific_runtime_libs+set}" = set; then
3700 slibdir='$(libsubdir)'
3701 elif test "$host" != "$target"; then
3702 slibdir='$(build_tooldir)/lib'
3708 objdir=`${PWDCMD-pwd}`
3711 AC_ARG_WITH(datarootdir,
3712 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3713 datarootdir="\${prefix}/$with_datarootdir",
3714 datarootdir='$(prefix)/share')
3715 AC_SUBST(datarootdir)
3718 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3719 docdir="\${prefix}/$with_docdir",
3720 docdir='$(datarootdir)')
3723 AC_ARG_WITH(htmldir,
3724 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3725 htmldir="\${prefix}/$with_htmldir",
3726 htmldir='$(docdir)')
3729 # Substitute configuration variables
3732 AC_SUBST(all_compilers)
3733 AC_SUBST(all_gtfiles)
3734 AC_SUBST(all_gtfiles_files_langs)
3735 AC_SUBST(all_gtfiles_files_files)
3736 AC_SUBST(all_lang_makefrags)
3737 AC_SUBST(all_lang_makefiles)
3738 AC_SUBST(all_languages)
3739 AC_SUBST(all_selected_languages)
3740 AC_SUBST(build_exeext)
3741 AC_SUBST(build_install_headers_dir)
3742 AC_SUBST(build_xm_file_list)
3743 AC_SUBST(build_xm_include_list)
3744 AC_SUBST(build_xm_defines)
3745 AC_SUBST(check_languages)
3746 AC_SUBST(cpp_install_dir)
3747 AC_SUBST(xmake_file)
3748 AC_SUBST(tmake_file)
3749 AC_SUBST(extra_gcc_objs)
3750 AC_SUBST(extra_headers_list)
3751 AC_SUBST(extra_objs)
3752 AC_SUBST(extra_parts)
3753 AC_SUBST(extra_passes)
3754 AC_SUBST(extra_programs)
3755 AC_SUBST(float_h_file)
3756 AC_SUBST(gcc_config_arguments)
3757 AC_SUBST(gcc_gxx_include_dir)
3758 AC_SUBST(host_exeext)
3759 AC_SUBST(host_xm_file_list)
3760 AC_SUBST(host_xm_include_list)
3761 AC_SUBST(host_xm_defines)
3762 AC_SUBST(out_host_hook_obj)
3764 AC_SUBST(lang_opt_files)
3765 AC_SUBST(lang_specs_files)
3766 AC_SUBST(lang_tree_files)
3767 AC_SUBST(local_prefix)
3769 AC_SUBST(objc_boehm_gc)
3771 AC_SUBST(out_object_file)
3772 AC_SUBST(thread_file)
3773 AC_SUBST(tm_file_list)
3774 AC_SUBST(tm_include_list)
3775 AC_SUBST(tm_defines)
3776 AC_SUBST(tm_p_file_list)
3777 AC_SUBST(tm_p_include_list)
3778 AC_SUBST(xm_file_list)
3779 AC_SUBST(xm_include_list)
3780 AC_SUBST(xm_defines)
3781 AC_SUBST(c_target_objs)
3782 AC_SUBST(cxx_target_objs)
3783 AC_SUBST(target_cpu_default)
3785 AC_SUBST_FILE(language_hooks)
3788 if test x${build} = x${host} ; then
3789 if test x${host} = x${target} ; then
3790 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3792 echo "Links are now set up to build a cross-compiler" 1>&2
3793 echo " from ${host} to ${target}." 1>&2
3796 if test x${host} = x${target} ; then
3797 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3798 echo " for ${target}." 1>&2
3800 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3801 echo " from ${host} to ${target}." 1>&2
3805 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3806 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3808 # Configure the subdirectories
3809 # AC_CONFIG_SUBDIRS($subdirs)
3811 # Create the Makefile
3812 # and configure language subdirectories
3813 AC_CONFIG_FILES($all_outputs)
3815 AC_CONFIG_COMMANDS([default],
3817 case ${CONFIG_HEADERS} in
3818 *auto-host.h:config.in*)
3821 # Make sure all the subdirs exist.
3822 for d in $subdirs doc build
3824 test -d $d || mkdir $d
3827 [subdirs='$subdirs'])