2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
5 # Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 2, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING. If not, write to the Free
21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 changequote(<<, >>)dnl
145 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
150 AC_ARG_WITH(cpp_install_dir,
151 [ --with-cpp-install-dir=DIR
152 install the user visible C preprocessor in DIR
153 (relative to PREFIX) as well as PREFIX/bin],
154 [if test x$withval = xyes; then
155 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
156 elif test x$withval != xno; then
157 cpp_install_dir=$withval
160 # We would like to our source tree to be readonly. However when releases or
161 # pre-releases are generated, the flex/bison generated files as well as the
162 # various formats of manuals need to be included along with the rest of the
163 # sources. Therefore we have --enable-generated-files-in-srcdir to do
166 AC_MSG_CHECKING([whether to place generated files in the source directory])
167 dnl generated-files-in-srcdir is disabled by default
168 AC_ARG_ENABLE(generated-files-in-srcdir,
169 [ --enable-generated-files-in-srcdir
170 put copies of generated files in source dir
171 intended for creating source tarballs for users
172 without texinfo bison or flex.],
173 generated_files_in_srcdir=$enableval,
174 generated_files_in_srcdir=no)
176 AC_MSG_RESULT($generated_files_in_srcdir)
178 if test "$generated_files_in_srcdir" = "yes"; then
185 # -------------------
186 # Find default linker
187 # -------------------
191 [ --with-gnu-ld arrange to work with GNU ld.],
192 gnu_ld_flag="$with_gnu_ld",
195 # With pre-defined ld
197 [ --with-ld arrange to use the specified ld (full pathname)],
198 DEFAULT_LINKER="$with_ld")
199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
200 if test ! -x "$DEFAULT_LINKER"; then
201 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
202 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
205 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
206 [Define to enable the use of a default linker.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 AC_MSG_CHECKING([whether a default assembler was specified])
250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
251 if test x"$gas_flag" = x"no"; then
252 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
254 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
264 # If a non-executable a.out is present (e.g. created by GNU as above even if
265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
266 # file, even when creating an executable, so an execution test fails.
267 # Remove possible default executable files to avoid this.
269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
270 # Autoconf includes it.
271 rm -f a.out a.exe b.out
273 # Find the native compiler
276 # autoconf is lame and doesn't give us any substitution variable for this.
277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
278 NO_MINUS_C_MINUS_O=yes
280 OUTPUT_OPTION='-o $@'
282 AC_SUBST(NO_MINUS_C_MINUS_O)
283 AC_SUBST(OUTPUT_OPTION)
285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
286 # optimizations to be activated explicitly by the toplevel.
289 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
293 # -------------------------
294 # Check C compiler features
295 # -------------------------
300 # sizeof(char) is 1 by definition.
301 AC_CHECK_SIZEOF(void *)
302 AC_CHECK_SIZEOF(short)
304 AC_CHECK_SIZEOF(long)
305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
308 # ---------------------
309 # Warnings and checking
310 # ---------------------
312 # Check $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
320 [whether ${CC} accepts -Wno-long-long],
321 [ac_cv_prog_cc_w_no_long_long],
322 [save_CFLAGS="$CFLAGS"
323 CFLAGS="-Wno-long-long"
324 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
325 [ac_cv_prog_cc_w_no_long_long=yes],
326 [ac_cv_prog_cc_w_no_long_long=no])
327 CFLAGS="$save_CFLAGS"
331 [whether ${CC} accepts -Wno-variadic-macros],
332 [ac_cv_prog_cc_w_no_variadic_macros],
333 [save_CFLAGS="$CFLAGS"
334 CFLAGS="-Wno-variadic-macros"
335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
336 [ac_cv_prog_cc_w_no_variadic_macros=yes],
337 [ac_cv_prog_cc_w_no_variadic_macros=no])
338 CFLAGS="$save_CFLAGS"
342 [whether ${CC} accepts -Wno-overlength-strings],
343 [ac_cv_prog_cc_w_no_overlength_strings],
344 [save_CFLAGS="$CFLAGS"
345 CFLAGS="-Wno-overlength-strings"
346 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
347 [ac_cv_prog_cc_w_no_overlength_strings=yes],
348 [ac_cv_prog_cc_w_no_overlength_strings=no])
349 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_no_long_long = yes \
354 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
355 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
356 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)$(NATIVE_SYSTEM_HEADER_DIR)'
759 if test "x$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 $tm_file; do
1614 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1615 tm_include_list="${tm_include_list} $f"
1618 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1619 tm_include_list="${tm_include_list} config/$f"
1626 for f in $tm_p_file; do
1629 tm_p_file_list="${tm_p_file_list} $f"
1630 tm_p_include_list="${tm_p_include_list} $f"
1633 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1634 tm_p_include_list="${tm_p_include_list} config/$f"
1640 for f in $xm_file; do
1643 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1644 xm_include_list="${xm_include_list} $f"
1647 xm_file_list="${xm_file_list} $f"
1648 xm_include_list="${xm_include_list} $f"
1651 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1652 xm_include_list="${xm_include_list} config/$f"
1658 host_xm_include_list=
1659 for f in $host_xm_file; do
1662 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1663 host_xm_include_list="${host_xm_include_list} $f"
1666 host_xm_file_list="${host_xm_file_list} $f"
1667 host_xm_include_list="${host_xm_include_list} $f"
1670 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1671 host_xm_include_list="${host_xm_include_list} config/$f"
1677 for f in $build_xm_file; do
1680 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1681 build_xm_include_list="${build_xm_include_list} $f"
1683 auto-build.h | auto-host.h )
1684 build_xm_file_list="${build_xm_file_list} $f"
1685 build_xm_include_list="${build_xm_include_list} $f"
1688 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1689 build_xm_include_list="${build_xm_include_list} config/$f"
1694 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1695 # cross-compiler which does not use the native headers and libraries.
1696 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1697 CROSS= AC_SUBST(CROSS)
1698 ALL=all.internal AC_SUBST(ALL)
1699 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1701 if test "x$with_build_sysroot" != x; then
1702 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1704 # This value is used, even on a native system, because
1705 # CROSS_SYSTEM_HEADER_DIR is just
1706 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1707 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1710 if test x$host != x$target
1712 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1714 SYSTEM_HEADER_DIR=$build_system_header_dir
1715 case "$host","$target" in
1716 # Darwin crosses can use the host system's libraries and headers,
1717 # because of the fat library support. Of course, it must be the
1718 # same version of Darwin on both sides. Allow the user to
1719 # just say --target=foo-darwin without a version number to mean
1720 # "the version on this system".
1721 *-*-darwin*,*-*-darwin*)
1722 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1723 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1724 if test $hostos = $targetos -o $targetos = darwin ; then
1726 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1731 i?86-*-*,x86_64-*-* \
1732 | powerpc*-*-*,powerpc64*-*-*)
1733 CROSS="$CROSS -DNATIVE_CROSS" ;;
1735 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1736 SYSTEM_HEADER_DIR=$build_system_header_dir
1739 # If this is a cross-compiler that does not
1740 # have its own set of headers then define
1743 # If this is using newlib, without having the headers available now,
1744 # then define inhibit_libc in LIBGCC2_CFLAGS.
1745 # This prevents libgcc2 from containing any code which requires libc
1748 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1749 test x$with_newlib = xyes ; } &&
1750 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1753 AC_SUBST(inhibit_libc)
1755 # When building gcc with a cross-compiler, we need to adjust things so
1756 # that the generator programs are still built with the native compiler.
1757 # Also, we cannot run fixincludes or fix-header.
1759 # These are the normal (build=host) settings:
1760 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1761 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1762 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1764 # Possibly disable fixproto, on a per-target basis.
1765 case ${use_fixproto} in
1770 STMP_FIXPROTO=stmp-fixproto
1773 AC_SUBST(STMP_FIXPROTO)
1775 # And these apply if build != host, or we are generating coverage data
1776 if test x$build != x$host || test "x$coverage_flags" != x
1778 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1780 if test "x$TARGET_SYSTEM_ROOT" = x; then
1781 if test "x$STMP_FIXPROTO" != x; then
1782 STMP_FIXPROTO=stmp-install-fixproto
1787 # Expand extra_headers to include complete path.
1788 # This substitutes for lots of t-* files.
1790 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1791 for file in ${extra_headers} ; do
1792 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1795 # Define collect2 in Makefile.
1796 case $host_can_use_collect2 in
1798 *) collect2='collect2$(exeext)' ;;
1800 AC_SUBST([collect2])
1802 # Add a definition of USE_COLLECT2 if system wants one.
1803 case $use_collect2 in
1804 no) use_collect2= ;;
1807 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1808 xm_defines="${xm_defines} USE_COLLECT2"
1809 case $host_can_use_collect2 in
1811 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1817 # ---------------------------
1818 # Assembler & linker features
1819 # ---------------------------
1821 # Identify the assembler which will work hand-in-glove with the newly
1822 # built GCC, so that we can examine its features. This is the assembler
1823 # which will be driven by the driver program.
1825 # If build != host, and we aren't building gas in-tree, we identify a
1826 # build->target assembler and hope that it will have the same features
1827 # as the host->target assembler we'll be using.
1828 gcc_cv_gas_major_version=
1829 gcc_cv_gas_minor_version=
1830 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1832 m4_pattern_allow([AS_FOR_TARGET])dnl
1833 AS_VAR_SET_IF(gcc_cv_as,, [
1834 if test -x "$DEFAULT_ASSEMBLER"; then
1835 gcc_cv_as="$DEFAULT_ASSEMBLER"
1836 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1837 && test -f ../gas/Makefile \
1838 && test x$build = x$host; then
1839 gcc_cv_as=../gas/as-new$build_exeext
1840 elif test -x as$build_exeext; then
1841 # Build using assembler in the current directory.
1842 gcc_cv_as=./as$build_exeext
1843 elif test -x $AS_FOR_TARGET; then
1844 gcc_cv_as="$AS_FOR_TARGET"
1846 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1849 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1850 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1852 AC_MSG_CHECKING(what assembler to use)
1853 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1854 # Single tree build which includes gas. We want to prefer it
1855 # over whatever linker top-level may have detected, since
1856 # we'll use what we're building after installation anyway.
1857 AC_MSG_RESULT(newly built gas)
1859 _gcc_COMPUTE_GAS_VERSION
1860 in_tree_gas_is_elf=no
1861 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1862 || (grep 'obj_format = multi' ../gas/Makefile \
1863 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1865 in_tree_gas_is_elf=yes
1868 AC_MSG_RESULT($gcc_cv_as)
1872 # Identify the linker which will work hand-in-glove with the newly
1873 # built GCC, so that we can examine its features. This is the linker
1874 # which will be driven by the driver program.
1876 # If build != host, and we aren't building gas in-tree, we identify a
1877 # build->target linker and hope that it will have the same features
1878 # as the host->target linker we'll be using.
1879 gcc_cv_gld_major_version=
1880 gcc_cv_gld_minor_version=
1881 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1882 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1884 AS_VAR_SET_IF(gcc_cv_ld,, [
1885 if test -x "$DEFAULT_LINKER"; then
1886 gcc_cv_ld="$DEFAULT_LINKER"
1887 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1888 && test -f ../ld/Makefile \
1889 && test x$build = x$host; then
1890 gcc_cv_ld=../ld/ld-new$build_exeext
1891 elif test -x collect-ld$build_exeext; then
1892 # Build using linker in the current directory.
1893 gcc_cv_ld=./collect-ld$build_exeext
1894 elif test -x $LD_FOR_TARGET; then
1895 gcc_cv_ld="$LD_FOR_TARGET"
1897 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1900 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1901 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1903 AC_MSG_CHECKING(what linker to use)
1904 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1905 # Single tree build which includes ld. We want to prefer it
1906 # over whatever linker top-level may have detected, since
1907 # we'll use what we're building after installation anyway.
1908 AC_MSG_RESULT(newly built ld)
1910 in_tree_ld_is_elf=no
1911 if (grep 'EMUL = .*elf' ../ld/Makefile \
1912 || grep 'EMUL = .*linux' ../ld/Makefile \
1913 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1914 in_tree_ld_is_elf=yes
1916 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
1919 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1920 if test x$gcc_cv_gld_version != x; then
1924 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1925 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1928 AC_MSG_RESULT($gcc_cv_ld)
1932 # Figure out what nm we will be using.
1933 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1934 AS_VAR_SET_IF(gcc_cv_nm,, [
1935 if test -f $gcc_cv_binutils_srcdir/configure.in \
1936 && test -f ../binutils/Makefile \
1937 && test x$build = x$host; then
1938 gcc_cv_nm=../binutils/nm-new$build_exeext
1939 elif test -x nm$build_exeext; then
1940 gcc_cv_nm=./nm$build_exeext
1941 elif test -x $NM_FOR_TARGET; then
1942 gcc_cv_nm="$NM_FOR_TARGET"
1944 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1947 AC_MSG_CHECKING(what nm to use)
1948 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1949 # Single tree build which includes binutils.
1950 AC_MSG_RESULT(newly built nm)
1953 AC_MSG_RESULT($gcc_cv_nm)
1957 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1958 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1960 # Figure out what objdump we will be using.
1961 AS_VAR_SET_IF(gcc_cv_objdump,, [
1962 if test -f $gcc_cv_binutils_srcdir/configure.in \
1963 && test -f ../binutils/Makefile \
1964 && test x$build = x$host; then
1965 # Single tree build which includes binutils.
1966 gcc_cv_objdump=../binutils/objdump$build_exeext
1967 elif test -x objdump$build_exeext; then
1968 gcc_cv_objdump=./objdump$build_exeext
1969 elif test -x $OBJDUMP_FOR_TARGET; then
1970 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1972 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1975 AC_MSG_CHECKING(what objdump to use)
1976 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1977 # Single tree build which includes binutils.
1978 AC_MSG_RESULT(newly built objdump)
1979 elif test x$gcc_cv_objdump = x; then
1980 AC_MSG_RESULT(not found)
1982 AC_MSG_RESULT($gcc_cv_objdump)
1985 # Figure out what assembler alignment features are present.
1986 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1990 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1991 [Define if your assembler supports .balign and .p2align.])])
1993 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1996 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1997 [Define if your assembler supports specifying the maximum number
1998 of bytes to skip when using the GAS .p2align command.])])
2000 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2003 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2004 [Define if your assembler supports .literal16.])])
2006 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2008 [conftest_label1: .word 0
2010 conftest_label2: .word 0
2012 [if test x$gcc_cv_nm != x; then
2013 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2014 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2015 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2017 else gcc_cv_as_subsection_m1=yes
2019 rm -f conftest.nm1 conftest.nm2
2021 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2022 [Define if your assembler supports .subsection and .subsection -1 starts
2023 emitting at the beginning of your section.])])
2025 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2028 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2030 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2032 [ .weakref foobar, barfnot],,
2033 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2035 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2038 .NSUBSPA $CODE$,COMDAT],,
2039 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2041 # .hidden needs to be supported in both the assembler and the linker,
2042 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2043 # This is irritatingly difficult to feature test for; we have to check the
2044 # date string after the version number. If we've got an in-tree
2045 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2047 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2048 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2053 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2054 [if test $in_tree_ld = yes ; then
2056 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2057 && test $in_tree_ld_is_elf = yes; then
2058 gcc_cv_ld_hidden=yes
2061 gcc_cv_ld_hidden=yes
2062 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2063 if echo "$ld_ver" | grep GNU > /dev/null; then
2065 ld_vers=`echo $ld_ver | sed -n \
2066 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2067 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2068 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2069 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2070 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2071 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2072 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2073 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2074 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2075 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2076 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2077 if test 0"$ld_date" -lt 20020404; then
2078 if test -n "$ld_date"; then
2079 # If there was date string, but was earlier than 2002-04-04, fail
2081 elif test -z "$ld_vers"; then
2082 # If there was no date string nor ld version number, something is wrong
2085 test -z "$ld_vers_patch" && ld_vers_patch=0
2086 if test "$ld_vers_major" -lt 2; then
2088 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2089 gcc_cv_ld_hidden="no"
2090 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2098 hppa64*-*-hpux* | ia64*-*-hpux*)
2099 gcc_cv_ld_hidden=yes
2107 libgcc_visibility=no
2108 AC_SUBST(libgcc_visibility)
2109 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2110 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2111 libgcc_visibility=yes
2112 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2113 [Define if your assembler and linker support .hidden.])
2116 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2117 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2125 [# GAS versions before 2.11 do not support uleb128,
2126 # despite appearing to.
2127 # ??? There exists an elf-specific test that will crash
2128 # the assembler. Perhaps it's better to figure out whether
2129 # arbitrary sections are supported and try the test.
2130 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2131 if echo "$as_ver" | grep GNU > /dev/null; then
2133 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2134 as_major=`echo $as_ver | sed 's/\..*//'`
2135 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2137 if test $as_major -eq 2 && test $as_minor -lt 11
2139 else gcc_cv_as_leb128=yes
2142 [AC_DEFINE(HAVE_AS_LEB128, 1,
2143 [Define if your assembler supports .sleb128 and .uleb128.])])
2145 # GAS versions up to and including 2.11.0 may mis-optimize
2147 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2155 .section .eh_frame,"aw",@progbits
2157 .4byte .LECIE1-.LSCIE1
2171 .4byte .LEFDE1-.LASFDE1
2173 .4byte .LASFDE1-__FRAME_BEGIN__
2181 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2182 cat > conftest.lit <<EOF
2183 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2184 0010 01000000 12000000 18000000 00000000 ................
2185 0020 08000000 04080000 0044 .........D @&t@
2187 cat > conftest.big <<EOF
2188 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2189 0010 00000001 00000012 00000018 00000000 ................
2190 0020 00000008 04000000 0844 .........D @&t@
2192 # If the assembler didn't choke, and we can objdump,
2193 # and we got the correct data, then succeed.
2194 # The text in the here-document typically retains its unix-style line
2195 # endings, while the output of objdump will use host line endings.
2196 # Therefore, use diff -b for the comparisons.
2197 if test x$gcc_cv_objdump != x \
2198 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2199 | tail -3 > conftest.got \
2200 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2201 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2203 gcc_cv_as_eh_frame=yes
2204 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2205 gcc_cv_as_eh_frame=buggy
2207 # Uh oh, what do we do now?
2208 gcc_cv_as_eh_frame=no
2211 if test $gcc_cv_as_eh_frame = buggy; then
2212 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2213 [Define if your assembler mis-optimizes .eh_frame data.])
2216 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2217 [elf,2,12,0], [--fatal-warnings],
2218 [.section .rodata.str, "aMS", @progbits, 1])
2219 if test $gcc_cv_as_shf_merge = no; then
2220 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2221 [elf,2,12,0], [--fatal-warnings],
2222 [.section .rodata.str, "aMS", %progbits, 1])
2224 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2225 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2226 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2228 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2229 [elf,2,16,0], [--fatal-warnings],
2230 [.section .text,"axG",@progbits,.foo,comdat])
2231 if test $gcc_cv_as_comdat_group = yes; then
2232 gcc_cv_as_comdat_group_percent=no
2234 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2235 [elf,2,16,0], [--fatal-warnings],
2236 [.section .text,"axG",%progbits,.foo,comdat])
2238 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2240 if test 0"$ld_date" -lt 20050308; then
2241 if test -n "$ld_date"; then
2242 # If there was date string, but was earlier than 2005-03-08, fail
2244 elif test "$ld_vers_major" -lt 2; then
2246 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2251 # assume linkers other than GNU ld don't support COMDAT group
2254 if test $comdat_group = no; then
2255 gcc_cv_as_comdat_group=no
2256 gcc_cv_as_comdat_group_percent=no
2258 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2259 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2260 [Define 0/1 if your assembler and linker support COMDAT groups.])
2262 # Thread-local storage - the check is heavily parametrized.
2271 .section ".tdata","awT",@progbits
2274 ldq $27,__tls_get_addr($29) !literal!1
2275 lda $16,foo($29) !tlsgd!1
2276 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2277 ldq $27,__tls_get_addr($29) !literal!2
2278 lda $16,foo($29) !tlsldm!2
2279 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2280 ldq $1,foo($29) !gotdtprel
2281 ldah $2,foo($29) !dtprelhi
2282 lda $3,foo($2) !dtprello
2283 lda $4,foo($29) !dtprel
2284 ldq $1,foo($29) !gottprel
2285 ldah $2,foo($29) !tprelhi
2286 lda $3,foo($2) !tprello
2287 lda $4,foo($29) !tprel'
2290 tls_as_opt=--fatal-warnings
2294 .section ".tdata","awT",@progbits
2306 .section ".tdata","awT",@progbits
2310 addil LT%foo-$tls_gdidx$,gp
2311 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2314 addil LT%foo-$tls_ldidx$,gp
2316 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2317 addil LR%foo-$tls_dtpoff$,%ret0
2318 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2320 addil LT%foo-$tls_ieoff$,gp
2321 ldw RT%foo-$tls_ieoff$(%r1),%t2
2324 addil LR%foo-$tls_leoff$,%t1
2325 ldo RR%foo-$tls_leoff$(%r1),%t2'
2328 tls_as_opt=--fatal-warnings
2332 .section ".tdata","awT",%progbits
2345 .section ".tdata","awT",@progbits
2349 leal foo@TLSGD(,%ebx,1), %eax
2350 leal foo@TLSLDM(%ebx), %eax
2351 leal foo@DTPOFF(%eax), %edx
2352 movl foo@GOTTPOFF(%ebx), %eax
2353 subl foo@GOTTPOFF(%ebx), %eax
2354 addl foo@GOTNTPOFF(%ebx), %eax
2355 movl foo@INDNTPOFF, %eax
2356 movl $foo@TPOFF, %eax
2357 subl $foo@TPOFF, %eax
2358 leal foo@NTPOFF(%ecx), %eax'
2361 tls_as_opt=--fatal-warnings
2365 .section ".tdata","awT",@progbits
2369 leaq foo@TLSGD(%rip), %rdi
2370 leaq foo@TLSLD(%rip), %rdi
2371 leaq foo@DTPOFF(%rax), %rdx
2372 movq foo@GOTTPOFF(%rip), %rax
2373 movq $foo@TPOFF, %rax'
2376 tls_as_opt=--fatal-warnings
2380 .section ".tdata","awT",@progbits
2383 addl r16 = @ltoff(@dtpmod(foo#)), gp
2384 addl r17 = @ltoff(@dtprel(foo#)), gp
2385 addl r18 = @ltoff(@tprel(foo#)), gp
2386 addl r19 = @dtprel(foo#), gp
2387 adds r21 = @dtprel(foo#), r13
2388 movl r23 = @dtprel(foo#)
2389 addl r20 = @tprel(foo#), gp
2390 adds r22 = @tprel(foo#), r13
2391 movl r24 = @tprel(foo#)'
2394 tls_as_opt=--fatal-warnings
2398 .section .tdata,"awT",@progbits
2402 addiu $4, $28, %tlsgd(x)
2403 addiu $4, $28, %tlsldm(x)
2404 lui $4, %dtprel_hi(x)
2405 addiu $4, $4, %dtprel_lo(x)
2406 lw $4, %gottprel(x)($28)
2407 lui $4, %tprel_hi(x)
2408 addiu $4, $4, %tprel_lo(x)'
2411 tls_as_opt='-32 --fatal-warnings'
2415 .section ".tdata","awT",@progbits
2423 addi 3,31,ld0@got@tlsgd
2425 addi 3,31,x1@got@tlsld
2428 addis 9,3,x2@dtprel@ha
2429 addi 9,9,x2@dtprel@l
2430 lwz 9,x3@got@tprel(31)
2433 addis 9,2,x2@tprel@ha
2434 addi 9,9,x2@tprel@l'
2437 tls_as_opt="-a32 --fatal-warnings"
2441 .section ".tdata","awT",@progbits
2449 addi 3,2,ld0@got@tlsgd
2455 addi 3,2,x1@got@tlsld
2461 addis 9,3,x2@dtprel@ha
2462 addi 9,9,x2@dtprel@l
2465 ld 9,x3@got@dtprel(2)
2471 tls_as_opt="-a64 --fatal-warnings"
2475 .section ".tdata","awT",@progbits
2484 l %r1,foo@GOTNTPOFF(%r12)
2485 l %r1,0(%r1):tls_load:foo
2486 bas %r14,0(%r1,%r13):tls_gdcall:foo
2487 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2490 tls_as_opt="-m31 --fatal-warnings"
2494 .section ".tdata","awT",@progbits
2502 lg %r1,foo@GOTNTPOFF(%r12)
2503 larl %r1,foo@INDNTPOFF
2504 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2505 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2508 tls_as_opt="-m64 -Aesame --fatal-warnings"
2510 sh-*-* | sh[34]-*-*)
2512 .section ".tdata","awT",@progbits
2522 tls_as_opt=--fatal-warnings
2526 sparc*-sun-solaris2.[56789]*)
2527 # TLS was introduced in the Solaris 9 4/04 release but
2528 # we do not enable it by default on Solaris 9 either.
2529 if test "x$enable_tls" = xyes ; then
2535 sparc*-sun-solaris2.*)
2542 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2544 .section ".tdata",#alloc,#write,#tls
2547 sethi %tgd_hi22(foo), %o0
2548 add %o0, %tgd_lo10(foo), %o1
2549 add %l7, %o1, %o0, %tgd_add(foo)
2550 call __tls_get_addr, %tgd_call(foo)
2551 sethi %tldm_hi22(foo), %l1
2552 add %l1, %tldm_lo10(foo), %l2
2553 add %l7, %l2, %o0, %tldm_add(foo)
2554 call __tls_get_addr, %tldm_call(foo)
2555 sethi %tldo_hix22(foo), %l3
2556 xor %l3, %tldo_lox10(foo), %l4
2557 add %o0, %l4, %l5, %tldo_add(foo)
2558 sethi %tie_hi22(foo), %o3
2559 add %o3, %tie_lo10(foo), %o3
2560 ld [%l7 + %o3], %o2, %tie_ld(foo)
2561 add %g7, %o2, %o4, %tie_add(foo)
2562 sethi %tle_hix22(foo), %l1
2563 xor %l1, %tle_lox10(foo), %o5
2564 ld [%g7 + %o5], %o1'
2569 .section ".tdata","awT",@progbits
2572 sethi %tgd_hi22(foo), %o0
2573 add %o0, %tgd_lo10(foo), %o1
2574 add %l7, %o1, %o0, %tgd_add(foo)
2575 call __tls_get_addr, %tgd_call(foo)
2576 sethi %tldm_hi22(foo), %l1
2577 add %l1, %tldm_lo10(foo), %l2
2578 add %l7, %l2, %o0, %tldm_add(foo)
2579 call __tls_get_addr, %tldm_call(foo)
2580 sethi %tldo_hix22(foo), %l3
2581 xor %l3, %tldo_lox10(foo), %l4
2582 add %o0, %l4, %l5, %tldo_add(foo)
2583 sethi %tie_hi22(foo), %o3
2584 add %o3, %tie_lo10(foo), %o3
2585 ld [%l7 + %o3], %o2, %tie_ld(foo)
2586 add %g7, %o2, %o4, %tie_add(foo)
2587 sethi %tle_hix22(foo), %l1
2588 xor %l1, %tle_lox10(foo), %o5
2589 ld [%g7 + %o5], %o1'
2592 tls_as_opt="-32 --fatal-warnings"
2598 if test "x$enable_tls" = xno ; then
2599 : # TLS explicitly disabled.
2600 elif test "x$enable_tls" = xyes ; then
2601 set_have_as_tls=yes # TLS explicitly enabled.
2602 elif test -z "$tls_first_major"; then
2603 : # If we don't have a check, assume no support.
2605 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2606 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2607 [set_have_as_tls=yes])
2609 if test $set_have_as_tls = yes ; then
2610 AC_DEFINE(HAVE_AS_TLS, 1,
2611 [Define if your assembler supports thread-local storage.])
2614 # Target-specific assembler checks.
2616 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2617 gcc_cv_ld_static_dynamic=no
2618 if test $in_tree_ld = yes ; then
2619 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2620 gcc_cv_ld_static_dynamic=yes
2622 elif test x$gcc_cv_ld != x; then
2623 # Check if linker supports -Bstatic/-Bdynamic option
2624 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2625 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2626 gcc_cv_ld_static_dynamic=yes
2629 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2630 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2631 [Define if your linker supports -Bstatic/-Bdynamic option.])
2633 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2635 if test x"$demangler_in_ld" = xyes; then
2636 AC_MSG_CHECKING(linker --demangle support)
2637 gcc_cv_ld_demangle=no
2638 if test $in_tree_ld = yes; then
2639 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2640 gcc_cv_ld_demangle=yes
2642 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2643 # Check if the GNU linker supports --demangle option
2644 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2645 gcc_cv_ld_demangle=yes
2648 if test x"$gcc_cv_ld_demangle" = xyes; then
2649 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2650 [Define if your linker supports --demangle option.])
2652 AC_MSG_RESULT($gcc_cv_ld_demangle)
2656 # All TARGET_ABI_OSF targets.
2657 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2658 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2659 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2662 extbl $3, $2, $3 !lituse_bytoff!1
2663 ldq $2, a($29) !literal!1
2664 ldq $4, b($29) !literal!2
2665 ldq_u $3, 0($2) !lituse_base!1
2666 ldq $27, f($29) !literal!5
2667 jsr $26, ($27), f !lituse_jsr!5
2668 ldah $29, 0($26) !gpdisp!3
2669 lda $0, c($29) !gprel
2670 ldah $1, d($29) !gprelhigh
2671 lda $1, d($1) !gprellow
2672 lda $29, 0($29) !gpdisp!3],,
2673 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2674 [Define if your assembler supports explicit relocations.])])
2675 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2676 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2679 ldq $27, a($29) !literal!1
2680 jsr $26, ($27), a !lituse_jsrdirect!1],,
2681 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2682 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2686 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2687 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2688 [-no-mul-bug-abort], [.text],,
2689 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2690 [Define if your assembler supports the -no-mul-bug-abort option.])])
2694 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2695 [.register %g2, #scratch],,
2696 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2697 [Define if your assembler supports .register.])])
2699 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2701 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2702 [Define if your assembler supports -relax option.])])
2704 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2705 gcc_cv_as_sparc_ua_pcrel,,
2713 .uaword %r_disp32(foo)],
2714 [if test x$gcc_cv_ld != x \
2715 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2716 gcc_cv_as_sparc_ua_pcrel=yes
2719 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2720 [Define if your assembler and linker support unaligned PC relative relocs.])
2722 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2723 gcc_cv_as_sparc_ua_pcrel_hidden,,
2728 .uaword %r_disp32(foo)
2729 .byte 0x32, 0x33, 0x34
2734 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2735 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2736 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2737 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2738 if $gcc_cv_objdump -R conftest 2> /dev/null \
2739 | grep 'DISP32' > /dev/null 2>&1; then
2742 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2746 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2747 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2748 ]) # unaligned pcrel relocs
2750 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2751 gcc_cv_as_sparc_offsetable_lo10,,
2754 or %g1, %lo(ab) + 12, %g1
2755 or %g1, %lo(ab + 12), %g1],
2756 [if test x$gcc_cv_objdump != x \
2757 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2758 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2759 gcc_cv_as_sparc_offsetable_lo10=yes
2761 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2762 [Define if your assembler supports offsetable %lo().])])
2766 i[34567]86-*-* | x86_64-*-*)
2769 cygwin* | pe | mingw32*)
2770 # Used for DWARF 2 in PE
2771 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2772 gcc_cv_as_ix86_pe_secrel32,
2778 [if test x$gcc_cv_ld != x \
2779 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2780 gcc_cv_as_ix86_pe_secrel32=yes
2783 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2784 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2788 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2789 gcc_cv_as_ix86_filds_fists,
2790 [2,9,0],, [filds mem; fists mem],,
2791 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2792 [Define if your assembler uses the new HImode fild and fist notation.])])
2794 gcc_GAS_CHECK_FEATURE([cmov syntax],
2795 gcc_cv_as_ix86_cmov_sun_syntax,,,
2796 [cmovl.l %edx, %eax],,
2797 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2798 [Define if your assembler supports the Sun syntax for cmov.])])
2800 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2801 gcc_cv_as_ix86_ffreep,,,
2803 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2804 [Define if your assembler supports the ffreep mnemonic.])])
2806 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2807 gcc_cv_as_ix86_diff_sect_delta,,,
2815 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2816 [Define if your assembler supports the subtraction of symbols in different sections.])])
2818 # This one is used unconditionally by i386.[ch]; it is to be defined
2819 # to 1 if the feature is present, 0 otherwise.
2820 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2821 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2827 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2828 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2829 [Define true if the assembler supports '.long foo@GOTOFF'.])
2833 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2834 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2836 addl r15 = @ltoffx(x#), gp
2838 ld8.mov r16 = [[r15]], x#],,
2839 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2840 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2846 *-*-aix*) conftest_s=' .machine "pwr5"
2850 gcc_GAS_CHECK_FEATURE([.machine directive support],
2851 gcc_cv_as_machine_directive,,,
2852 [ .machine ppc7400])
2853 if test x$gcc_cv_as_machine_directive != xyes; then
2854 echo "*** This target requires an assembler supporting \".machine\"" >&2
2855 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2856 test x$build = x$target && exit 1
2860 *) conftest_s=' .machine power4
2865 gcc_GAS_CHECK_FEATURE([mfcr field support],
2866 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2868 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2869 [Define if your assembler supports mfcr field.])])
2872 *-*-aix*) conftest_s=' .machine "pwr5"
2875 *) conftest_s=' .machine power5
2880 gcc_GAS_CHECK_FEATURE([popcntb support],
2881 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2883 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2884 [Define if your assembler supports popcntb field.])])
2887 *-*-aix*) conftest_s=' .machine "pwr5x"
2890 *) conftest_s=' .machine power5
2895 gcc_GAS_CHECK_FEATURE([fp round support],
2896 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2898 [AC_DEFINE(HAVE_AS_FPRND, 1,
2899 [Define if your assembler supports fprnd.])])
2902 *-*-aix*) conftest_s=' .machine "pwr6"
2905 *) conftest_s=' .machine power6
2910 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2911 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2913 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2914 [Define if your assembler supports mffgpr and mftgpr.])])
2917 *-*-aix*) conftest_s=' .csect .text[[PR]]
2919 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2923 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2924 *) conftest_s=' .text
2926 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2930 *-*-aix*) conftest_s=' .machine "pwr6"
2933 *) conftest_s=' .machine power6
2938 gcc_GAS_CHECK_FEATURE([compare bytes support],
2939 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2941 [AC_DEFINE(HAVE_AS_CMPB, 1,
2942 [Define if your assembler supports cmpb.])])
2945 *-*-aix*) conftest_s=' .machine "pwr6"
2948 *) conftest_s=' .machine power6
2953 gcc_GAS_CHECK_FEATURE([decimal float support],
2954 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2956 [AC_DEFINE(HAVE_AS_DFP, 1,
2957 [Define if your assembler supports DFP instructions.])])
2959 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2960 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2962 [AC_DEFINE(HAVE_AS_REL16, 1,
2963 [Define if your assembler supports R_PPC_REL16 relocs.])])
2967 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2968 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2969 [ lw $4,%gp_rel(foo)($4)],,
2970 [if test x$target_cpu_default = x
2971 then target_cpu_default=MASK_EXPLICIT_RELOCS
2972 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2974 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2975 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2976 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2977 [Define if the assembler understands -mno-shared.])])
2981 # Mips and HP-UX need the GNU assembler.
2982 # Linux on IA64 might be able to use the Intel assembler.
2985 mips*-*-* | *-*-hpux* )
2986 if test x$gas_flag = xyes \
2987 || test x"$host" != x"$build" \
2988 || test ! -x "$gcc_cv_as" \
2989 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2992 echo "*** This configuration requires the GNU assembler" >&2
2998 # ??? Not all targets support dwarf2 debug_line, even within a version
2999 # of gas. Moreover, we need to emit a valid instruction to trigger any
3000 # info to the output file. So, as supported targets are added to gas 2.11,
3001 # add some instruction here to (also) show we expect this might work.
3002 # ??? Once 2.11 is released, probably need to add first known working
3003 # version to the per-target configury.
3005 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3006 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3007 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3010 ia64*-*-* | s390*-*-*)
3017 if test x"$insn" != x; then
3019 .file 1 \"conftest.s\"
3022 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3023 gcc_cv_as_dwarf2_debug_line,
3024 [elf,2,11,0],, [$conftest_s],
3025 [if test x$gcc_cv_objdump != x \
3026 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3027 | grep debug_line > /dev/null 2>&1; then
3028 gcc_cv_as_dwarf2_debug_line=yes
3031 # The .debug_line file table must be in the exact order that
3032 # we specified the files, since these indices are also used
3033 # by DW_AT_decl_file. Approximate this test by testing if
3034 # the assembler bitches if the same index is assigned twice.
3035 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3036 gcc_cv_as_dwarf2_file_buggy,,,
3040 if test $gcc_cv_as_dwarf2_debug_line = yes \
3041 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3042 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3043 [Define if your assembler supports dwarf2 .file/.loc directives,
3044 and preserves file table indices exactly as given.])
3047 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3048 gcc_cv_as_gdwarf2_flag,
3049 [elf,2,11,0], [--gdwarf2], [$insn],,
3050 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3051 [Define if your assembler supports the --gdwarf2 option.])])
3053 gcc_GAS_CHECK_FEATURE([--gstabs option],
3054 gcc_cv_as_gstabs_flag,
3055 [elf,2,11,0], [--gstabs], [$insn],
3056 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3057 # and warns about it, but still exits successfully. So check for
3059 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3061 else gcc_cv_as_gstabs_flag=yes
3063 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3064 [Define if your assembler supports the --gstabs option.])])
3067 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3068 gcc_cv_ld_ro_rw_mix=unknown
3069 if test $in_tree_ld = yes ; then
3070 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3071 && test $in_tree_ld_is_elf = yes; then
3072 gcc_cv_ld_ro_rw_mix=read-write
3074 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3075 echo '.section myfoosect, "a"' > conftest1.s
3076 echo '.section myfoosect, "aw"' > conftest2.s
3077 echo '.byte 1' >> conftest2.s
3078 echo '.section myfoosect, "a"' > conftest3.s
3079 echo '.byte 0' >> conftest3.s
3080 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3081 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3082 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3083 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3084 conftest2.o conftest3.o > /dev/null 2>&1; then
3085 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3086 | sed -e '/myfoosect/!d' -e N`
3087 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3088 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3089 gcc_cv_ld_ro_rw_mix=read-only
3091 gcc_cv_ld_ro_rw_mix=read-write
3096 rm -f conftest.* conftest[123].*
3099 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3100 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3101 [Define if your linker links a mix of read-only
3102 and read-write sections into a read-write section.])
3104 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3106 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3107 gcc_cv_ld_eh_frame_hdr=no
3108 if test $in_tree_ld = yes ; then
3109 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3110 && test $in_tree_ld_is_elf = yes; then
3111 gcc_cv_ld_eh_frame_hdr=yes
3113 elif test x$gcc_cv_ld != x; then
3114 # Check if linker supports --eh-frame-hdr option
3115 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3116 gcc_cv_ld_eh_frame_hdr=yes
3119 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3120 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3121 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3122 [Define if your linker supports --eh-frame-hdr option.])
3124 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3126 AC_MSG_CHECKING(linker position independent executable support)
3128 if test $in_tree_ld = yes ; then
3129 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3130 && test $in_tree_ld_is_elf = yes; then
3133 elif test x$gcc_cv_ld != x; then
3134 # Check if linker supports -pie option
3135 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3139 if test x"$gcc_cv_ld_pie" = xyes; then
3140 AC_DEFINE(HAVE_LD_PIE, 1,
3141 [Define if your linker supports -pie option.])
3143 AC_MSG_RESULT($gcc_cv_ld_pie)
3145 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3146 gcc_cv_ld_eh_gc_sections=no
3147 if test $in_tree_ld = yes ; then
3148 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3149 && test $in_tree_ld_is_elf = yes; then
3150 gcc_cv_ld_eh_gc_sections=yes
3152 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3153 cat > conftest.s <<EOF
3156 .type _start, @function
3159 .size _start, .-_start
3160 .section .text.foo,"ax",@progbits
3161 .type foo, @function
3165 .section .gcc_except_table.foo,"a",@progbits
3168 .section .eh_frame,"a",@progbits
3171 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3172 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3173 | grep "gc-sections option ignored" > /dev/null; then
3174 gcc_cv_ld_eh_gc_sections=no
3175 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3176 gcc_cv_ld_eh_gc_sections=yes
3177 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3178 if test x$gcc_cv_as_comdat_group != xyes; then
3179 gcc_cv_ld_eh_gc_sections=no
3180 cat > conftest.s <<EOF
3183 .type _start, @function
3186 .size _start, .-_start
3187 .section .gnu.linkonce.t.foo,"ax",@progbits
3188 .type foo, @function
3192 .section .gcc_except_table.foo,"a",@progbits
3195 .section .eh_frame,"a",@progbits
3198 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3199 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3200 | grep "gc-sections option ignored" > /dev/null; then
3201 gcc_cv_ld_eh_gc_sections=no
3202 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3203 gcc_cv_ld_eh_gc_sections=yes
3209 rm -f conftest.s conftest.o conftest
3213 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3214 gcc_cv_ld_eh_gc_sections=no
3217 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3218 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3219 [Define if your linker supports garbage collection of
3220 sections in presence of EH frames.])
3222 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3228 AC_CACHE_CHECK(linker --as-needed support,
3229 gcc_cv_ld_as_needed,
3230 [gcc_cv_ld_as_needed=no
3231 if test $in_tree_ld = yes ; then
3232 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3233 && test $in_tree_ld_is_elf = yes; then
3234 gcc_cv_ld_as_needed=yes
3236 elif test x$gcc_cv_ld != x; then
3237 # Check if linker supports --as-needed and --no-as-needed options
3238 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3239 gcc_cv_ld_as_needed=yes
3243 if test x"$gcc_cv_ld_as_needed" = xyes; then
3244 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3245 [Define if your linker supports --as-needed and --no-as-needed options.])
3248 case "$target:$tm_file" in
3249 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3250 AC_CACHE_CHECK(linker support for omitting dot symbols,
3251 gcc_cv_ld_no_dot_syms,
3252 [gcc_cv_ld_no_dot_syms=no
3253 if test $in_tree_ld = yes ; then
3254 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3255 gcc_cv_ld_no_dot_syms=yes
3257 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3258 cat > conftest1.s <<EOF
3262 cat > conftest2.s <<EOF
3263 .section ".opd","aw"
3268 .quad .LEfoo,.TOC.@tocbase,0
3274 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3275 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3276 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3277 gcc_cv_ld_no_dot_syms=yes
3279 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3282 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3283 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3284 [Define if your PowerPC64 linker only needs function descriptor syms.])
3289 AC_CACHE_CHECK(linker --sysroot support,
3291 [gcc_cv_ld_sysroot=no
3292 if test $in_tree_ld = yes ; then
3293 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3294 gcc_cv_ld_sysroot=yes
3296 elif test x$gcc_cv_ld != x; then
3297 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3298 gcc_cv_ld_sysroot=yes
3301 if test x"$gcc_cv_ld_sysroot" = xyes; then
3302 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3303 [Define if your linker supports --sysroot.])
3306 if test x$with_sysroot = x && test x$host = x$target \
3307 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3308 && test "$prefix" != "NONE"; then
3309 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3310 [Define to PREFIX/include if cpp should also search that directory.])
3313 # Test for stack protector support in target C library.
3314 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3315 gcc_cv_libc_provides_ssp,
3316 [gcc_cv_libc_provides_ssp=no
3319 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3320 if test "x$with_sysroot" = x; then
3321 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3322 elif test "x$with_sysroot" = xyes; then
3323 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3325 glibc_header_dir="${with_sysroot}/usr/include"
3328 glibc_header_dir=/usr/include
3330 # glibc 2.4 and later provides __stack_chk_fail and
3331 # either __stack_chk_guard, or TLS access to stack guard canary.
3332 if test -f $glibc_header_dir/features.h \
3333 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3334 $glibc_header_dir/features.h > /dev/null; then
3335 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3336 $glibc_header_dir/features.h > /dev/null; then
3337 gcc_cv_libc_provides_ssp=yes
3338 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3339 $glibc_header_dir/features.h > /dev/null \
3340 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3341 $glibc_header_dir/features.h > /dev/null; then
3342 gcc_cv_libc_provides_ssp=yes
3347 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3348 [echo "no __stack_chk_fail on this target"])
3350 *) gcc_cv_libc_provides_ssp=no ;;
3353 if test x$gcc_cv_libc_provides_ssp = xyes; then
3354 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3355 [Define if your target C library provides stack protector support])
3358 # Check if TFmode long double should be used by default or not.
3359 # Some glibc targets used DFmode long double, but with glibc 2.4
3360 # and later they can use TFmode.
3362 powerpc*-*-*gnu* | \
3366 AC_ARG_WITH(long-double-128,
3367 [ --with-long-double-128 Use 128-bit long double by default.],
3368 gcc_cv_target_ldbl128="$with_long_double_128",
3369 [gcc_cv_target_ldbl128=no
3370 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3371 if test "x$with_sysroot" = x; then
3372 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3373 elif test "x$with_sysroot" = xyes; then
3374 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3376 glibc_header_dir="${with_sysroot}/usr/include"
3379 glibc_header_dir=/usr/include
3382 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3383 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3384 && gcc_cv_target_ldbl128=yes
3389 if test x$gcc_cv_target_ldbl128 = xyes; then
3390 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3391 [Define if TFmode long double should be the default])
3394 # Find out what GC implementation we want, or may, use.
3396 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3404 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3407 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3412 echo "Using $GGC for garbage collection."
3414 # Use the system's zlib library.
3416 zlibinc="-I\$(srcdir)/../zlib"
3417 AC_ARG_WITH(system-zlib,
3418 [ --with-system-zlib use installed libz],
3425 dnl Very limited version of automake's enable-maintainer-mode
3427 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3428 dnl maintainer-mode is disabled by default
3429 AC_ARG_ENABLE(maintainer-mode,
3430 [ --enable-maintainer-mode
3431 enable make rules and dependencies not useful
3432 (and sometimes confusing) to the casual installer],
3433 maintainer_mode=$enableval,
3436 AC_MSG_RESULT($maintainer_mode)
3438 if test "$maintainer_mode" = "yes"; then
3449 # Make empty files to contain the specs and options for each language.
3450 # Then add #include lines to for a compiler that has specs and/or options.
3456 # These (without "all_") are set in each config-lang.in.
3457 # `language' must be a single word so is spelled singularly.
3460 all_outputs='Makefile gccbug libada-mk'
3461 # List of language makefile fragments.
3463 # List of language subdirectory makefiles. Deprecated.
3465 # Files for gengtype
3466 all_gtfiles="$target_gtfiles"
3467 # Files for gengtype with language
3468 all_gtfiles_files_langs=
3469 all_gtfiles_files_files=
3471 # These are the languages that are set in --enable-languages,
3472 # and are available in the GCC tree.
3473 all_selected_languages=
3475 # Add the language fragments.
3476 # Languages are added via two mechanisms. Some information must be
3477 # recorded in makefile variables, these are defined in config-lang.in.
3478 # We accumulate them and plug them into the main Makefile.
3479 # The other mechanism is a set of hooks for each of the main targets
3480 # like `clean', `install', etc.
3482 language_hooks="Make-hooks"
3484 for lang in ${srcdir}/*/config-lang.in
3487 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3489 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3490 if test "x$lang_alias" = x
3492 echo "$lang doesn't set \$language." 1>&2
3495 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3496 subdirs="$subdirs $subdir"
3497 case ",$enable_languages," in
3499 all_selected_languages="$all_selected_languages $lang_alias"
3500 if test -f $srcdir/$subdir/lang-specs.h; then
3501 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3513 . ${srcdir}/$subdir/config-lang.in
3514 if test "x$language" = x
3516 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3521 case ",$enable_languages," in
3524 for i in $subdir_requires; do
3525 test -f "${srcdir}/$i/config-lang.in" && continue
3533 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3534 if test -f $srcdir/$subdir/lang.opt; then
3535 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3537 if test -f $srcdir/$subdir/$subdir-tree.def; then
3538 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3540 if test -f ${srcdir}/$subdir/Makefile.in
3541 then all_lang_makefiles="$subdir/Makefile"
3543 all_languages="$all_languages $language"
3544 all_compilers="$all_compilers $compilers"
3545 all_outputs="$all_outputs $outputs"
3546 all_gtfiles="$all_gtfiles $gtfiles"
3549 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3550 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3554 # Pick up gtfiles for c
3557 . ${srcdir}/c-config-lang.in
3558 all_gtfiles="$all_gtfiles $gtfiles"
3561 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3562 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3566 for language in $all_selected_languages
3568 check_languages="$check_languages check-$language"
3571 # We link each language in with a set of hooks, reached indirectly via
3572 # lang.${target}. Only do so for selected languages.
3576 target_list="all.cross start.encap rest.encap tags \
3577 install-common install-man install-info install-pdf dvi pdf \
3578 html uninstall info man srcextra srcman srcinfo \
3579 mostlyclean clean distclean maintainer-clean"
3581 for t in $target_list
3584 for lang in $all_selected_languages
3588 echo "lang.$t: $x" >> Make-hooks
3597 echo "dir ." > .gdbinit
3598 echo "dir ${srcdir}" >> .gdbinit
3599 if test x$gdb_needs_out_file_path = xyes
3601 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3603 if test "x$subdirs" != x; then
3606 echo "dir ${srcdir}/$s" >> .gdbinit
3609 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3611 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3612 # absolute path for gcc_tooldir based on inserting the number of up-directory
3613 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3614 # $(libsubdir)/@(unlibsubdir) based path.
3615 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3616 # make and thus we'd get different behavior depending on where we built the
3618 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3619 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3621 changequote(<<, >>)dnl
3622 # An explanation of the sed strings:
3623 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3624 # -e 's|/$||' match a trailing forward slash and eliminates it
3625 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3626 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3628 # (*) Note this pattern overwrites the first character of the string
3629 # with a forward slash if one is not already present. This is not a
3630 # problem because the exact names of the sub-directories concerned is
3631 # unimportant, just the number of them matters.
3633 # The practical upshot of these patterns is like this:
3635 # prefix exec_prefix result
3636 # ------ ----------- ------
3638 # /foo/ /foo/bar ../
3639 # /foo /foo/bar/ ../
3640 # /foo/ /foo/bar/ ../
3641 # /foo /foo/bar/ugg ../../
3644 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3645 changequote([, ])dnl
3647 AC_SUBST(gcc_tooldir)
3650 # Find a directory in which to install a shared libgcc.
3652 AC_ARG_ENABLE(version-specific-runtime-libs,
3653 [ --enable-version-specific-runtime-libs
3654 specify that runtime libraries should be
3655 installed in a compiler-specific directory])
3657 AC_ARG_WITH(slibdir,
3658 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3659 slibdir="$with_slibdir",
3660 if test "${enable_version_specific_runtime_libs+set}" = set; then
3661 slibdir='$(libsubdir)'
3662 elif test "$host" != "$target"; then
3663 slibdir='$(build_tooldir)/lib'
3669 objdir=`${PWDCMD-pwd}`
3672 AC_ARG_WITH(datarootdir,
3673 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3674 datarootdir="\${prefix}/$with_datarootdir",
3675 datarootdir='$(prefix)/share')
3676 AC_SUBST(datarootdir)
3679 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3680 docdir="\${prefix}/$with_docdir",
3681 docdir='$(datarootdir)')
3684 AC_ARG_WITH(htmldir,
3685 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3686 htmldir="\${prefix}/$with_htmldir",
3687 htmldir='$(docdir)')
3690 # Substitute configuration variables
3693 AC_SUBST(all_compilers)
3694 AC_SUBST(all_gtfiles)
3695 AC_SUBST(all_gtfiles_files_langs)
3696 AC_SUBST(all_gtfiles_files_files)
3697 AC_SUBST(all_lang_makefrags)
3698 AC_SUBST(all_lang_makefiles)
3699 AC_SUBST(all_languages)
3700 AC_SUBST(all_selected_languages)
3701 AC_SUBST(build_exeext)
3702 AC_SUBST(build_install_headers_dir)
3703 AC_SUBST(build_xm_file_list)
3704 AC_SUBST(build_xm_include_list)
3705 AC_SUBST(build_xm_defines)
3706 AC_SUBST(check_languages)
3707 AC_SUBST(cpp_install_dir)
3708 AC_SUBST(xmake_file)
3709 AC_SUBST(tmake_file)
3710 AC_SUBST(extra_gcc_objs)
3711 AC_SUBST(extra_headers_list)
3712 AC_SUBST(extra_objs)
3713 AC_SUBST(extra_parts)
3714 AC_SUBST(extra_passes)
3715 AC_SUBST(extra_programs)
3716 AC_SUBST(float_h_file)
3717 AC_SUBST(gcc_config_arguments)
3718 AC_SUBST(gcc_gxx_include_dir)
3719 AC_SUBST(host_exeext)
3720 AC_SUBST(host_xm_file_list)
3721 AC_SUBST(host_xm_include_list)
3722 AC_SUBST(host_xm_defines)
3723 AC_SUBST(out_host_hook_obj)
3725 AC_SUBST(lang_opt_files)
3726 AC_SUBST(lang_specs_files)
3727 AC_SUBST(lang_tree_files)
3728 AC_SUBST(local_prefix)
3730 AC_SUBST(objc_boehm_gc)
3732 AC_SUBST(out_object_file)
3733 AC_SUBST(thread_file)
3734 AC_SUBST(tm_file_list)
3735 AC_SUBST(tm_include_list)
3736 AC_SUBST(tm_defines)
3737 AC_SUBST(tm_p_file_list)
3738 AC_SUBST(tm_p_include_list)
3739 AC_SUBST(xm_file_list)
3740 AC_SUBST(xm_include_list)
3741 AC_SUBST(xm_defines)
3742 AC_SUBST(c_target_objs)
3743 AC_SUBST(cxx_target_objs)
3744 AC_SUBST(target_cpu_default)
3746 AC_SUBST_FILE(language_hooks)
3749 if test x${build} = x${host} ; then
3750 if test x${host} = x${target} ; then
3751 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3753 echo "Links are now set up to build a cross-compiler" 1>&2
3754 echo " from ${host} to ${target}." 1>&2
3757 if test x${host} = x${target} ; then
3758 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3759 echo " for ${target}." 1>&2
3761 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3762 echo " from ${host} to ${target}." 1>&2
3766 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3767 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3769 # Configure the subdirectories
3770 # AC_CONFIG_SUBDIRS($subdirs)
3772 # Create the Makefile
3773 # and configure language subdirectories
3774 AC_CONFIG_FILES($all_outputs)
3776 AC_CONFIG_COMMANDS([default],
3778 case ${CONFIG_HEADERS} in
3779 *auto-host.h:config.in*)
3782 # Make sure all the subdirs exist.
3783 for d in $subdirs doc build
3785 test -d $d || mkdir $d
3788 [subdirs='$subdirs'])