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/signal.h>
1338 #include <ucontext.h>
1339 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1341 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1342 if test $gcc_cv_mcontext_underscores = yes; then
1343 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1344 [mcontext_t fields start with __])
1353 # Check if a valid thread package
1354 case ${enable_threads} in
1357 target_thread_file='single'
1361 target_thread_file='single'
1363 aix | dce | gnat | irix | posix | posix95 | rtems | \
1364 single | solaris | vxworks | win32 )
1365 target_thread_file=${enable_threads}
1368 echo "${enable_threads} is an unknown thread package" 1>&2
1373 if test x${thread_file} = x; then
1374 # No thread file set by target-specific clauses in config.gcc,
1375 # so use file chosen by default logic above
1376 thread_file=${target_thread_file}
1379 # Make gthr-default.h if we have a thread file.
1381 if test $thread_file != single; then
1382 rm -f gthr-default.h
1383 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1384 gthread_flags=-DHAVE_GTHR_DEFAULT
1386 AC_SUBST(gthread_flags)
1393 if test x$enable___cxa_atexit = xyes || \
1394 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1395 if test x$host = x$target; then
1397 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1398 # keyed to flag_use_cxa_atexit
1403 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1404 [echo "__cxa_atexit can't be enabled on this target"])
1408 # We can't check for __cxa_atexit when building a cross, so assume
1412 if test x$use_cxa_atexit = xyes; then
1413 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1414 [Define if you want to use __cxa_atexit, rather than atexit, to
1415 register C++ destructors for local statics and global objects.
1416 This is essential for fully standards-compliant handling of
1417 destructors, but requires __cxa_atexit in libc.])
1422 if test x$with_system_libunwind = xyes; then
1423 if test x$host = x$target; then
1424 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1427 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1428 if test x$use_getipinfo = xyes; then
1429 AC_DEFINE(HAVE_GETIPINFO, 1,
1430 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1432 echo "The system unwind library does not support _Unwind_GetIPInfo."
1435 # Look for a file containing extra machine modes.
1436 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1437 extra_modes_file='$(srcdir)'/config/${extra_modes}
1438 AC_SUBST(extra_modes_file)
1439 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1440 [Define to the name of a file containing a list of extra machine modes
1441 for this architecture.])
1444 # Convert extra_options into a form suitable for Makefile use.
1446 for f in $extra_options; do
1447 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1449 AC_SUBST(extra_opt_files)
1451 # auto-host.h is the file containing items generated by autoconf and is
1452 # the first file included by config.h.
1453 # If host=build, it is correct to have bconfig include auto-host.h
1454 # as well. If host!=build, we are in error and need to do more
1455 # work to find out the build config parameters.
1456 if test x$host = x$build
1458 build_auto=auto-host.h
1460 # We create a subdir, then run autoconf in the subdir.
1461 # To prevent recursion we set host and build for the new
1462 # invocation of configure to the build for this invocation
1469 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1470 *) realsrcdir=../${srcdir};;
1472 saved_CFLAGS="${CFLAGS}"
1473 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1474 ${realsrcdir}/configure \
1475 --enable-languages=${enable_languages-all} \
1476 --target=$target_alias --host=$build_alias --build=$build_alias
1477 CFLAGS="${saved_CFLAGS}"
1479 # We just finished tests for the build machine, so rename
1480 # the file auto-build.h in the gcc directory.
1481 mv auto-host.h ../auto-build.h
1484 build_auto=auto-build.h
1486 AC_SUBST(build_subdir)
1488 tm_file="${tm_file} defaults.h"
1489 tm_p_file="${tm_p_file} tm-preds.h"
1490 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1491 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1492 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1493 # put this back in temporarily.
1494 xm_file="auto-host.h ansidecl.h ${xm_file}"
1501 # Compile in configure arguments.
1502 if test -f configargs.h ; then
1503 # Being re-configured.
1504 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1505 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1507 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1510 # Double all backslashes and backslash all quotes to turn
1511 # gcc_config_arguments into a C string.
1512 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1513 $gcc_config_arguments
1515 gcc_config_arguments_str=`cat conftest.out`
1518 cat > configargs.h <<EOF
1519 /* Generated automatically. */
1520 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1521 static const char thread_model[] = "$thread_file";
1523 static const struct {
1524 const char *name, *value;
1525 } configure_default_options[] = $configure_default_options;
1529 # Internationalization
1530 ZW_GNU_GETTEXT_SISTER_DIR
1532 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1533 # -liconv on the link line twice.
1534 case "$LIBINTL" in *$LIBICONV*)
1538 AC_ARG_ENABLE(secureplt,
1539 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1542 # Windows32 Registry support for specifying GCC installation paths.
1543 AC_ARG_ENABLE(win32-registry,
1544 [ --disable-win32-registry
1545 disable lookup of installation paths in the
1546 Registry on Windows hosts
1547 --enable-win32-registry enable registry lookup (default)
1548 --enable-win32-registry=KEY
1549 use KEY instead of GCC version as the last portion
1550 of the registry key],,)
1553 win32 | pe | cygwin* | mingw32* | uwin*)
1554 if test "x$enable_win32_registry" != xno; then
1555 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1558 if test "x$enable_win32_registry" != xno; then
1559 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1560 [Define to 1 if installation paths should be looked up in the Windows
1561 Registry. Ignored on non-Windows hosts.])
1563 if test "x$enable_win32_registry" != xyes \
1564 && test "x$enable_win32_registry" != x; then
1565 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1566 [Define to be the last component of the Windows registry key under which
1567 to look for installation paths. The full key used will be
1568 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1569 The default is the GCC version number.])
1575 # Get an absolute path to the GCC top-level source directory
1576 holddir=`${PWDCMD-pwd}`
1578 topdir=`${PWDCMD-pwd}`
1581 # Conditionalize the makefile for this host machine.
1583 for f in ${host_xmake_file}
1585 if test -f ${srcdir}/config/$f
1587 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1591 # Conditionalize the makefile for this target machine.
1593 for f in ${tmake_file}
1595 if test -f ${srcdir}/config/$f
1597 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1600 tmake_file="${tmake_file_}"
1602 # This is a terrible hack which will go away some day.
1603 host_cc_for_libada=${CC}
1604 AC_SUBST(host_cc_for_libada)
1606 out_object_file=`basename $out_file .c`.o
1608 tm_file_list="options.h"
1609 tm_include_list="options.h"
1610 for f in $tm_file; do
1613 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1614 tm_include_list="${tm_include_list} $f"
1617 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1618 tm_include_list="${tm_include_list} config/$f"
1625 for f in $tm_p_file; do
1628 tm_p_file_list="${tm_p_file_list} $f"
1629 tm_p_include_list="${tm_p_include_list} $f"
1632 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1633 tm_p_include_list="${tm_p_include_list} config/$f"
1639 for f in $xm_file; do
1642 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1643 xm_include_list="${xm_include_list} $f"
1646 xm_file_list="${xm_file_list} $f"
1647 xm_include_list="${xm_include_list} $f"
1650 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1651 xm_include_list="${xm_include_list} config/$f"
1657 host_xm_include_list=
1658 for f in $host_xm_file; do
1661 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1662 host_xm_include_list="${host_xm_include_list} $f"
1665 host_xm_file_list="${host_xm_file_list} $f"
1666 host_xm_include_list="${host_xm_include_list} $f"
1669 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1670 host_xm_include_list="${host_xm_include_list} config/$f"
1676 for f in $build_xm_file; do
1679 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1680 build_xm_include_list="${build_xm_include_list} $f"
1682 auto-build.h | auto-host.h )
1683 build_xm_file_list="${build_xm_file_list} $f"
1684 build_xm_include_list="${build_xm_include_list} $f"
1687 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1688 build_xm_include_list="${build_xm_include_list} config/$f"
1693 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1694 # cross-compiler which does not use the native headers and libraries.
1695 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1696 CROSS= AC_SUBST(CROSS)
1697 ALL=all.internal AC_SUBST(ALL)
1698 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1700 if test "x$with_build_sysroot" != x; then
1701 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1703 # This value is used, even on a native system, because
1704 # CROSS_SYSTEM_HEADER_DIR is just
1705 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1706 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1709 if test x$host != x$target
1711 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1713 SYSTEM_HEADER_DIR=$build_system_header_dir
1714 case "$host","$target" in
1715 # Darwin crosses can use the host system's libraries and headers,
1716 # because of the fat library support. Of course, it must be the
1717 # same version of Darwin on both sides. Allow the user to
1718 # just say --target=foo-darwin without a version number to mean
1719 # "the version on this system".
1720 *-*-darwin*,*-*-darwin*)
1721 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1722 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1723 if test $hostos = $targetos -o $targetos = darwin ; then
1725 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1730 i?86-*-*,x86_64-*-* \
1731 | powerpc*-*-*,powerpc64*-*-*)
1732 CROSS="$CROSS -DNATIVE_CROSS" ;;
1734 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1735 SYSTEM_HEADER_DIR=$build_system_header_dir
1738 # If this is a cross-compiler that does not
1739 # have its own set of headers then define
1742 # If this is using newlib, without having the headers available now,
1743 # then define inhibit_libc in LIBGCC2_CFLAGS.
1744 # This prevents libgcc2 from containing any code which requires libc
1747 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1748 test x$with_newlib = xyes ; } &&
1749 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1752 AC_SUBST(inhibit_libc)
1754 # When building gcc with a cross-compiler, we need to adjust things so
1755 # that the generator programs are still built with the native compiler.
1756 # Also, we cannot run fixincludes or fix-header.
1758 # These are the normal (build=host) settings:
1759 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1760 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1761 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1763 # Possibly disable fixproto, on a per-target basis.
1764 case ${use_fixproto} in
1769 STMP_FIXPROTO=stmp-fixproto
1772 AC_SUBST(STMP_FIXPROTO)
1774 # And these apply if build != host, or we are generating coverage data
1775 if test x$build != x$host || test "x$coverage_flags" != x
1777 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1779 if test "x$TARGET_SYSTEM_ROOT" = x; then
1780 if test "x$STMP_FIXPROTO" != x; then
1781 STMP_FIXPROTO=stmp-install-fixproto
1786 # Expand extra_headers to include complete path.
1787 # This substitutes for lots of t-* files.
1789 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1790 for file in ${extra_headers} ; do
1791 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1794 # Define collect2 in Makefile.
1795 case $host_can_use_collect2 in
1797 *) collect2='collect2$(exeext)' ;;
1799 AC_SUBST([collect2])
1801 # Add a definition of USE_COLLECT2 if system wants one.
1802 case $use_collect2 in
1803 no) use_collect2= ;;
1806 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1807 xm_defines="${xm_defines} USE_COLLECT2"
1808 case $host_can_use_collect2 in
1810 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1816 # ---------------------------
1817 # Assembler & linker features
1818 # ---------------------------
1820 # Identify the assembler which will work hand-in-glove with the newly
1821 # built GCC, so that we can examine its features. This is the assembler
1822 # which will be driven by the driver program.
1824 # If build != host, and we aren't building gas in-tree, we identify a
1825 # build->target assembler and hope that it will have the same features
1826 # as the host->target assembler we'll be using.
1827 gcc_cv_gas_major_version=
1828 gcc_cv_gas_minor_version=
1829 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1831 m4_pattern_allow([AS_FOR_TARGET])dnl
1832 AS_VAR_SET_IF(gcc_cv_as,, [
1833 if test -x "$DEFAULT_ASSEMBLER"; then
1834 gcc_cv_as="$DEFAULT_ASSEMBLER"
1835 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1836 && test -f ../gas/Makefile \
1837 && test x$build = x$host; then
1838 gcc_cv_as=../gas/as-new$build_exeext
1839 elif test -x as$build_exeext; then
1840 # Build using assembler in the current directory.
1841 gcc_cv_as=./as$build_exeext
1842 elif test -x $AS_FOR_TARGET; then
1843 gcc_cv_as="$AS_FOR_TARGET"
1845 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1848 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1849 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1851 AC_MSG_CHECKING(what assembler to use)
1852 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1853 # Single tree build which includes gas. We want to prefer it
1854 # over whatever linker top-level may have detected, since
1855 # we'll use what we're building after installation anyway.
1856 AC_MSG_RESULT(newly built gas)
1858 _gcc_COMPUTE_GAS_VERSION
1859 in_tree_gas_is_elf=no
1860 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1861 || (grep 'obj_format = multi' ../gas/Makefile \
1862 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1864 in_tree_gas_is_elf=yes
1867 AC_MSG_RESULT($gcc_cv_as)
1871 # Identify the linker which will work hand-in-glove with the newly
1872 # built GCC, so that we can examine its features. This is the linker
1873 # which will be driven by the driver program.
1875 # If build != host, and we aren't building gas in-tree, we identify a
1876 # build->target linker and hope that it will have the same features
1877 # as the host->target linker we'll be using.
1878 gcc_cv_gld_major_version=
1879 gcc_cv_gld_minor_version=
1880 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1881 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1883 AS_VAR_SET_IF(gcc_cv_ld,, [
1884 if test -x "$DEFAULT_LINKER"; then
1885 gcc_cv_ld="$DEFAULT_LINKER"
1886 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1887 && test -f ../ld/Makefile \
1888 && test x$build = x$host; then
1889 gcc_cv_ld=../ld/ld-new$build_exeext
1890 elif test -x collect-ld$build_exeext; then
1891 # Build using linker in the current directory.
1892 gcc_cv_ld=./collect-ld$build_exeext
1893 elif test -x $LD_FOR_TARGET; then
1894 gcc_cv_ld="$LD_FOR_TARGET"
1896 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1899 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1900 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1902 AC_MSG_CHECKING(what linker to use)
1903 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1904 # Single tree build which includes ld. We want to prefer it
1905 # over whatever linker top-level may have detected, since
1906 # we'll use what we're building after installation anyway.
1907 AC_MSG_RESULT(newly built ld)
1909 in_tree_ld_is_elf=no
1910 if (grep 'EMUL = .*elf' ../ld/Makefile \
1911 || grep 'EMUL = .*linux' ../ld/Makefile \
1912 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1913 in_tree_ld_is_elf=yes
1915 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
1918 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1919 if test x$gcc_cv_gld_version != x; then
1923 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1924 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1927 AC_MSG_RESULT($gcc_cv_ld)
1931 # Figure out what nm we will be using.
1932 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1933 AS_VAR_SET_IF(gcc_cv_nm,, [
1934 if test -f $gcc_cv_binutils_srcdir/configure.in \
1935 && test -f ../binutils/Makefile \
1936 && test x$build = x$host; then
1937 gcc_cv_nm=../binutils/nm-new$build_exeext
1938 elif test -x nm$build_exeext; then
1939 gcc_cv_nm=./nm$build_exeext
1940 elif test -x $NM_FOR_TARGET; then
1941 gcc_cv_nm="$NM_FOR_TARGET"
1943 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1946 AC_MSG_CHECKING(what nm to use)
1947 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1948 # Single tree build which includes binutils.
1949 AC_MSG_RESULT(newly built nm)
1952 AC_MSG_RESULT($gcc_cv_nm)
1956 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1957 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1959 # Figure out what objdump we will be using.
1960 AS_VAR_SET_IF(gcc_cv_objdump,, [
1961 if test -f $gcc_cv_binutils_srcdir/configure.in \
1962 && test -f ../binutils/Makefile \
1963 && test x$build = x$host; then
1964 # Single tree build which includes binutils.
1965 gcc_cv_objdump=../binutils/objdump$build_exeext
1966 elif test -x objdump$build_exeext; then
1967 gcc_cv_objdump=./objdump$build_exeext
1968 elif test -x $OBJDUMP_FOR_TARGET; then
1969 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1971 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1974 AC_MSG_CHECKING(what objdump to use)
1975 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1976 # Single tree build which includes binutils.
1977 AC_MSG_RESULT(newly built objdump)
1978 elif test x$gcc_cv_objdump = x; then
1979 AC_MSG_RESULT(not found)
1981 AC_MSG_RESULT($gcc_cv_objdump)
1984 # Figure out what assembler alignment features are present.
1985 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1989 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1990 [Define if your assembler supports .balign and .p2align.])])
1992 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1995 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1996 [Define if your assembler supports specifying the maximum number
1997 of bytes to skip when using the GAS .p2align command.])])
1999 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2002 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2003 [Define if your assembler supports .literal16.])])
2005 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2007 [conftest_label1: .word 0
2009 conftest_label2: .word 0
2011 [if test x$gcc_cv_nm != x; then
2012 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2013 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2014 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2016 else gcc_cv_as_subsection_m1=yes
2018 rm -f conftest.nm1 conftest.nm2
2020 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2021 [Define if your assembler supports .subsection and .subsection -1 starts
2022 emitting at the beginning of your section.])])
2024 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2027 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2029 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2031 [ .weakref foobar, barfnot],,
2032 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2034 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2037 .NSUBSPA $CODE$,COMDAT],,
2038 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2040 # .hidden needs to be supported in both the assembler and the linker,
2041 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2042 # This is irritatingly difficult to feature test for; we have to check the
2043 # date string after the version number. If we've got an in-tree
2044 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2046 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2047 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2052 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2053 [if test $in_tree_ld = yes ; then
2055 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2056 && test $in_tree_ld_is_elf = yes; then
2057 gcc_cv_ld_hidden=yes
2060 gcc_cv_ld_hidden=yes
2061 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2062 if echo "$ld_ver" | grep GNU > /dev/null; then
2064 ld_vers=`echo $ld_ver | sed -n \
2065 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2066 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2067 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2068 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2069 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2070 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2071 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2072 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2073 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2074 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2075 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2076 if test 0"$ld_date" -lt 20020404; then
2077 if test -n "$ld_date"; then
2078 # If there was date string, but was earlier than 2002-04-04, fail
2080 elif test -z "$ld_vers"; then
2081 # If there was no date string nor ld version number, something is wrong
2084 test -z "$ld_vers_patch" && ld_vers_patch=0
2085 if test "$ld_vers_major" -lt 2; then
2087 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2088 gcc_cv_ld_hidden="no"
2089 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2097 hppa64*-*-hpux* | ia64*-*-hpux*)
2098 gcc_cv_ld_hidden=yes
2106 libgcc_visibility=no
2107 AC_SUBST(libgcc_visibility)
2108 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2109 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2110 libgcc_visibility=yes
2111 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2112 [Define if your assembler and linker support .hidden.])
2115 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2116 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2124 [# GAS versions before 2.11 do not support uleb128,
2125 # despite appearing to.
2126 # ??? There exists an elf-specific test that will crash
2127 # the assembler. Perhaps it's better to figure out whether
2128 # arbitrary sections are supported and try the test.
2129 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2130 if echo "$as_ver" | grep GNU > /dev/null; then
2132 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2133 as_major=`echo $as_ver | sed 's/\..*//'`
2134 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2136 if test $as_major -eq 2 && test $as_minor -lt 11
2138 else gcc_cv_as_leb128=yes
2141 [AC_DEFINE(HAVE_AS_LEB128, 1,
2142 [Define if your assembler supports .sleb128 and .uleb128.])])
2144 # GAS versions up to and including 2.11.0 may mis-optimize
2146 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2154 .section .eh_frame,"aw",@progbits
2156 .4byte .LECIE1-.LSCIE1
2170 .4byte .LEFDE1-.LASFDE1
2172 .4byte .LASFDE1-__FRAME_BEGIN__
2180 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2181 cat > conftest.lit <<EOF
2182 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2183 0010 01000000 12000000 18000000 00000000 ................
2184 0020 08000000 04080000 0044 .........D @&t@
2186 cat > conftest.big <<EOF
2187 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2188 0010 00000001 00000012 00000018 00000000 ................
2189 0020 00000008 04000000 0844 .........D @&t@
2191 # If the assembler didn't choke, and we can objdump,
2192 # and we got the correct data, then succeed.
2193 # The text in the here-document typically retains its unix-style line
2194 # endings, while the output of objdump will use host line endings.
2195 # Therefore, use diff -b for the comparisons.
2196 if test x$gcc_cv_objdump != x \
2197 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2198 | tail -3 > conftest.got \
2199 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2200 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2202 gcc_cv_as_eh_frame=yes
2203 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2204 gcc_cv_as_eh_frame=buggy
2206 # Uh oh, what do we do now?
2207 gcc_cv_as_eh_frame=no
2210 if test $gcc_cv_as_eh_frame = buggy; then
2211 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2212 [Define if your assembler mis-optimizes .eh_frame data.])
2215 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2216 [elf,2,12,0], [--fatal-warnings],
2217 [.section .rodata.str, "aMS", @progbits, 1])
2218 if test $gcc_cv_as_shf_merge = no; then
2219 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2220 [elf,2,12,0], [--fatal-warnings],
2221 [.section .rodata.str, "aMS", %progbits, 1])
2223 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2224 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2225 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2227 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2228 [elf,2,16,0], [--fatal-warnings],
2229 [.section .text,"axG",@progbits,.foo,comdat])
2230 if test $gcc_cv_as_comdat_group = yes; then
2231 gcc_cv_as_comdat_group_percent=no
2233 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2234 [elf,2,16,0], [--fatal-warnings],
2235 [.section .text,"axG",%progbits,.foo,comdat])
2237 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2239 if test 0"$ld_date" -lt 20050308; then
2240 if test -n "$ld_date"; then
2241 # If there was date string, but was earlier than 2005-03-08, fail
2243 elif test "$ld_vers_major" -lt 2; then
2245 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2250 # assume linkers other than GNU ld don't support COMDAT group
2253 if test $comdat_group = no; then
2254 gcc_cv_as_comdat_group=no
2255 gcc_cv_as_comdat_group_percent=no
2257 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2258 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2259 [Define 0/1 if your assembler and linker support COMDAT groups.])
2261 # Thread-local storage - the check is heavily parametrized.
2270 .section ".tdata","awT",@progbits
2273 ldq $27,__tls_get_addr($29) !literal!1
2274 lda $16,foo($29) !tlsgd!1
2275 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2276 ldq $27,__tls_get_addr($29) !literal!2
2277 lda $16,foo($29) !tlsldm!2
2278 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2279 ldq $1,foo($29) !gotdtprel
2280 ldah $2,foo($29) !dtprelhi
2281 lda $3,foo($2) !dtprello
2282 lda $4,foo($29) !dtprel
2283 ldq $1,foo($29) !gottprel
2284 ldah $2,foo($29) !tprelhi
2285 lda $3,foo($2) !tprello
2286 lda $4,foo($29) !tprel'
2289 tls_as_opt=--fatal-warnings
2293 .section ".tdata","awT",@progbits
2305 .section ".tdata","awT",@progbits
2309 addil LT%foo-$tls_gdidx$,gp
2310 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2313 addil LT%foo-$tls_ldidx$,gp
2315 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2316 addil LR%foo-$tls_dtpoff$,%ret0
2317 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2319 addil LT%foo-$tls_ieoff$,gp
2320 ldw RT%foo-$tls_ieoff$(%r1),%t2
2323 addil LR%foo-$tls_leoff$,%t1
2324 ldo RR%foo-$tls_leoff$(%r1),%t2'
2327 tls_as_opt=--fatal-warnings
2331 .section ".tdata","awT",%progbits
2344 .section ".tdata","awT",@progbits
2348 leal foo@TLSGD(,%ebx,1), %eax
2349 leal foo@TLSLDM(%ebx), %eax
2350 leal foo@DTPOFF(%eax), %edx
2351 movl foo@GOTTPOFF(%ebx), %eax
2352 subl foo@GOTTPOFF(%ebx), %eax
2353 addl foo@GOTNTPOFF(%ebx), %eax
2354 movl foo@INDNTPOFF, %eax
2355 movl $foo@TPOFF, %eax
2356 subl $foo@TPOFF, %eax
2357 leal foo@NTPOFF(%ecx), %eax'
2360 tls_as_opt=--fatal-warnings
2364 .section ".tdata","awT",@progbits
2368 leaq foo@TLSGD(%rip), %rdi
2369 leaq foo@TLSLD(%rip), %rdi
2370 leaq foo@DTPOFF(%rax), %rdx
2371 movq foo@GOTTPOFF(%rip), %rax
2372 movq $foo@TPOFF, %rax'
2375 tls_as_opt=--fatal-warnings
2379 .section ".tdata","awT",@progbits
2382 addl r16 = @ltoff(@dtpmod(foo#)), gp
2383 addl r17 = @ltoff(@dtprel(foo#)), gp
2384 addl r18 = @ltoff(@tprel(foo#)), gp
2385 addl r19 = @dtprel(foo#), gp
2386 adds r21 = @dtprel(foo#), r13
2387 movl r23 = @dtprel(foo#)
2388 addl r20 = @tprel(foo#), gp
2389 adds r22 = @tprel(foo#), r13
2390 movl r24 = @tprel(foo#)'
2393 tls_as_opt=--fatal-warnings
2397 .section .tdata,"awT",@progbits
2401 addiu $4, $28, %tlsgd(x)
2402 addiu $4, $28, %tlsldm(x)
2403 lui $4, %dtprel_hi(x)
2404 addiu $4, $4, %dtprel_lo(x)
2405 lw $4, %gottprel(x)($28)
2406 lui $4, %tprel_hi(x)
2407 addiu $4, $4, %tprel_lo(x)'
2410 tls_as_opt='-32 --fatal-warnings'
2414 .section ".tdata","awT",@progbits
2422 addi 3,31,ld0@got@tlsgd
2424 addi 3,31,x1@got@tlsld
2427 addis 9,3,x2@dtprel@ha
2428 addi 9,9,x2@dtprel@l
2429 lwz 9,x3@got@tprel(31)
2432 addis 9,2,x2@tprel@ha
2433 addi 9,9,x2@tprel@l'
2436 tls_as_opt="-a32 --fatal-warnings"
2440 .section ".tdata","awT",@progbits
2448 addi 3,2,ld0@got@tlsgd
2454 addi 3,2,x1@got@tlsld
2460 addis 9,3,x2@dtprel@ha
2461 addi 9,9,x2@dtprel@l
2464 ld 9,x3@got@dtprel(2)
2470 tls_as_opt="-a64 --fatal-warnings"
2474 .section ".tdata","awT",@progbits
2483 l %r1,foo@GOTNTPOFF(%r12)
2484 l %r1,0(%r1):tls_load:foo
2485 bas %r14,0(%r1,%r13):tls_gdcall:foo
2486 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2489 tls_as_opt="-m31 --fatal-warnings"
2493 .section ".tdata","awT",@progbits
2501 lg %r1,foo@GOTNTPOFF(%r12)
2502 larl %r1,foo@INDNTPOFF
2503 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2504 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2507 tls_as_opt="-m64 -Aesame --fatal-warnings"
2509 sh-*-* | sh[34]-*-*)
2511 .section ".tdata","awT",@progbits
2521 tls_as_opt=--fatal-warnings
2525 sparc*-sun-solaris2.[56789]*)
2526 # TLS was introduced in the Solaris 9 4/04 release but
2527 # we do not enable it by default on Solaris 9 either.
2528 if test "x$enable_tls" = xyes ; then
2534 sparc*-sun-solaris2.*)
2541 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2543 .section ".tdata",#alloc,#write,#tls
2546 sethi %tgd_hi22(foo), %o0
2547 add %o0, %tgd_lo10(foo), %o1
2548 add %l7, %o1, %o0, %tgd_add(foo)
2549 call __tls_get_addr, %tgd_call(foo)
2550 sethi %tldm_hi22(foo), %l1
2551 add %l1, %tldm_lo10(foo), %l2
2552 add %l7, %l2, %o0, %tldm_add(foo)
2553 call __tls_get_addr, %tldm_call(foo)
2554 sethi %tldo_hix22(foo), %l3
2555 xor %l3, %tldo_lox10(foo), %l4
2556 add %o0, %l4, %l5, %tldo_add(foo)
2557 sethi %tie_hi22(foo), %o3
2558 add %o3, %tie_lo10(foo), %o3
2559 ld [%l7 + %o3], %o2, %tie_ld(foo)
2560 add %g7, %o2, %o4, %tie_add(foo)
2561 sethi %tle_hix22(foo), %l1
2562 xor %l1, %tle_lox10(foo), %o5
2563 ld [%g7 + %o5], %o1'
2568 .section ".tdata","awT",@progbits
2571 sethi %tgd_hi22(foo), %o0
2572 add %o0, %tgd_lo10(foo), %o1
2573 add %l7, %o1, %o0, %tgd_add(foo)
2574 call __tls_get_addr, %tgd_call(foo)
2575 sethi %tldm_hi22(foo), %l1
2576 add %l1, %tldm_lo10(foo), %l2
2577 add %l7, %l2, %o0, %tldm_add(foo)
2578 call __tls_get_addr, %tldm_call(foo)
2579 sethi %tldo_hix22(foo), %l3
2580 xor %l3, %tldo_lox10(foo), %l4
2581 add %o0, %l4, %l5, %tldo_add(foo)
2582 sethi %tie_hi22(foo), %o3
2583 add %o3, %tie_lo10(foo), %o3
2584 ld [%l7 + %o3], %o2, %tie_ld(foo)
2585 add %g7, %o2, %o4, %tie_add(foo)
2586 sethi %tle_hix22(foo), %l1
2587 xor %l1, %tle_lox10(foo), %o5
2588 ld [%g7 + %o5], %o1'
2591 tls_as_opt="-32 --fatal-warnings"
2597 if test "x$enable_tls" = xno ; then
2598 : # TLS explicitly disabled.
2599 elif test "x$enable_tls" = xyes ; then
2600 set_have_as_tls=yes # TLS explicitly enabled.
2601 elif test -z "$tls_first_major"; then
2602 : # If we don't have a check, assume no support.
2604 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2605 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2606 [set_have_as_tls=yes])
2608 if test $set_have_as_tls = yes ; then
2609 AC_DEFINE(HAVE_AS_TLS, 1,
2610 [Define if your assembler supports thread-local storage.])
2613 # Target-specific assembler checks.
2615 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2616 gcc_cv_ld_static_dynamic=no
2617 if test $in_tree_ld = yes ; then
2618 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2619 gcc_cv_ld_static_dynamic=yes
2621 elif test x$gcc_cv_ld != x; then
2622 # Check if linker supports -Bstatic/-Bdynamic option
2623 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2624 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2625 gcc_cv_ld_static_dynamic=yes
2628 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2629 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2630 [Define if your linker supports -Bstatic/-Bdynamic option.])
2632 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2634 if test x"$demangler_in_ld" = xyes; then
2635 AC_MSG_CHECKING(linker --demangle support)
2636 gcc_cv_ld_demangle=no
2637 if test $in_tree_ld = yes; then
2638 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2639 gcc_cv_ld_demangle=yes
2641 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2642 # Check if the GNU linker supports --demangle option
2643 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2644 gcc_cv_ld_demangle=yes
2647 if test x"$gcc_cv_ld_demangle" = xyes; then
2648 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2649 [Define if your linker supports --demangle option.])
2651 AC_MSG_RESULT($gcc_cv_ld_demangle)
2655 # All TARGET_ABI_OSF targets.
2656 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2657 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2658 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2661 extbl $3, $2, $3 !lituse_bytoff!1
2662 ldq $2, a($29) !literal!1
2663 ldq $4, b($29) !literal!2
2664 ldq_u $3, 0($2) !lituse_base!1
2665 ldq $27, f($29) !literal!5
2666 jsr $26, ($27), f !lituse_jsr!5
2667 ldah $29, 0($26) !gpdisp!3
2668 lda $0, c($29) !gprel
2669 ldah $1, d($29) !gprelhigh
2670 lda $1, d($1) !gprellow
2671 lda $29, 0($29) !gpdisp!3],,
2672 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2673 [Define if your assembler supports explicit relocations.])])
2674 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2675 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2678 ldq $27, a($29) !literal!1
2679 jsr $26, ($27), a !lituse_jsrdirect!1],,
2680 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2681 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2685 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2686 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2687 [-no-mul-bug-abort], [.text],,
2688 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2689 [Define if your assembler supports the -no-mul-bug-abort option.])])
2693 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2694 [.register %g2, #scratch],,
2695 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2696 [Define if your assembler supports .register.])])
2698 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2700 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2701 [Define if your assembler supports -relax option.])])
2703 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2704 gcc_cv_as_sparc_ua_pcrel,,
2712 .uaword %r_disp32(foo)],
2713 [if test x$gcc_cv_ld != x \
2714 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2715 gcc_cv_as_sparc_ua_pcrel=yes
2718 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2719 [Define if your assembler and linker support unaligned PC relative relocs.])
2721 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2722 gcc_cv_as_sparc_ua_pcrel_hidden,,
2727 .uaword %r_disp32(foo)
2728 .byte 0x32, 0x33, 0x34
2733 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2734 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2735 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2736 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2737 if $gcc_cv_objdump -R conftest 2> /dev/null \
2738 | grep 'DISP32' > /dev/null 2>&1; then
2741 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2745 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2746 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2747 ]) # unaligned pcrel relocs
2749 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2750 gcc_cv_as_sparc_offsetable_lo10,,
2753 or %g1, %lo(ab) + 12, %g1
2754 or %g1, %lo(ab + 12), %g1],
2755 [if test x$gcc_cv_objdump != x \
2756 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2757 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2758 gcc_cv_as_sparc_offsetable_lo10=yes
2760 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2761 [Define if your assembler supports offsetable %lo().])])
2765 i[34567]86-*-* | x86_64-*-*)
2768 cygwin* | pe | mingw32*)
2769 # Used for DWARF 2 in PE
2770 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2771 gcc_cv_as_ix86_pe_secrel32,
2777 [if test x$gcc_cv_ld != x \
2778 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2779 gcc_cv_as_ix86_pe_secrel32=yes
2782 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2783 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2787 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2788 gcc_cv_as_ix86_filds_fists,
2789 [2,9,0],, [filds mem; fists mem],,
2790 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2791 [Define if your assembler uses the new HImode fild and fist notation.])])
2793 gcc_GAS_CHECK_FEATURE([cmov syntax],
2794 gcc_cv_as_ix86_cmov_sun_syntax,,,
2795 [cmovl.l %edx, %eax],,
2796 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2797 [Define if your assembler supports the Sun syntax for cmov.])])
2799 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2800 gcc_cv_as_ix86_ffreep,,,
2802 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2803 [Define if your assembler supports the ffreep mnemonic.])])
2805 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2806 gcc_cv_as_ix86_diff_sect_delta,,,
2814 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2815 [Define if your assembler supports the subtraction of symbols in different sections.])])
2817 # This one is used unconditionally by i386.[ch]; it is to be defined
2818 # to 1 if the feature is present, 0 otherwise.
2819 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2820 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2826 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2827 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2828 [Define true if the assembler supports '.long foo@GOTOFF'.])
2832 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2833 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2835 addl r15 = @ltoffx(x#), gp
2837 ld8.mov r16 = [[r15]], x#],,
2838 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2839 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2845 *-*-aix*) conftest_s=' .machine "pwr5"
2849 gcc_GAS_CHECK_FEATURE([.machine directive support],
2850 gcc_cv_as_machine_directive,,,
2851 [ .machine ppc7400])
2852 if test x$gcc_cv_as_machine_directive != xyes; then
2853 echo "*** This target requires an assembler supporting \".machine\"" >&2
2854 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2855 test x$build = x$target && exit 1
2859 *) conftest_s=' .machine power4
2864 gcc_GAS_CHECK_FEATURE([mfcr field support],
2865 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2867 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2868 [Define if your assembler supports mfcr field.])])
2871 *-*-aix*) conftest_s=' .machine "pwr5"
2874 *) conftest_s=' .machine power5
2879 gcc_GAS_CHECK_FEATURE([popcntb support],
2880 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2882 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2883 [Define if your assembler supports popcntb field.])])
2886 *-*-aix*) conftest_s=' .machine "pwr5x"
2889 *) conftest_s=' .machine power5
2894 gcc_GAS_CHECK_FEATURE([fp round support],
2895 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2897 [AC_DEFINE(HAVE_AS_FPRND, 1,
2898 [Define if your assembler supports fprnd.])])
2901 *-*-aix*) conftest_s=' .machine "pwr6"
2904 *) conftest_s=' .machine power6
2909 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2910 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2912 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2913 [Define if your assembler supports mffgpr and mftgpr.])])
2916 *-*-aix*) conftest_s=' .csect .text[[PR]]
2918 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2922 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2923 *) conftest_s=' .text
2925 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2928 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2929 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2931 [AC_DEFINE(HAVE_AS_REL16, 1,
2932 [Define if your assembler supports R_PPC_REL16 relocs.])])
2936 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2937 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2938 [ lw $4,%gp_rel(foo)($4)],,
2939 [if test x$target_cpu_default = x
2940 then target_cpu_default=MASK_EXPLICIT_RELOCS
2941 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2943 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2944 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2945 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2946 [Define if the assembler understands -mno-shared.])])
2950 # Mips and HP-UX need the GNU assembler.
2951 # Linux on IA64 might be able to use the Intel assembler.
2954 mips*-*-* | *-*-hpux* )
2955 if test x$gas_flag = xyes \
2956 || test x"$host" != x"$build" \
2957 || test ! -x "$gcc_cv_as" \
2958 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2961 echo "*** This configuration requires the GNU assembler" >&2
2967 # ??? Not all targets support dwarf2 debug_line, even within a version
2968 # of gas. Moreover, we need to emit a valid instruction to trigger any
2969 # info to the output file. So, as supported targets are added to gas 2.11,
2970 # add some instruction here to (also) show we expect this might work.
2971 # ??? Once 2.11 is released, probably need to add first known working
2972 # version to the per-target configury.
2974 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2975 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2976 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
2979 ia64*-*-* | s390*-*-*)
2986 if test x"$insn" != x; then
2988 .file 1 \"conftest.s\"
2991 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2992 gcc_cv_as_dwarf2_debug_line,
2993 [elf,2,11,0],, [$conftest_s],
2994 [if test x$gcc_cv_objdump != x \
2995 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2996 | grep debug_line > /dev/null 2>&1; then
2997 gcc_cv_as_dwarf2_debug_line=yes
3000 # The .debug_line file table must be in the exact order that
3001 # we specified the files, since these indices are also used
3002 # by DW_AT_decl_file. Approximate this test by testing if
3003 # the assembler bitches if the same index is assigned twice.
3004 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3005 gcc_cv_as_dwarf2_file_buggy,,,
3009 if test $gcc_cv_as_dwarf2_debug_line = yes \
3010 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3011 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3012 [Define if your assembler supports dwarf2 .file/.loc directives,
3013 and preserves file table indices exactly as given.])
3016 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3017 gcc_cv_as_gdwarf2_flag,
3018 [elf,2,11,0], [--gdwarf2], [$insn],,
3019 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3020 [Define if your assembler supports the --gdwarf2 option.])])
3022 gcc_GAS_CHECK_FEATURE([--gstabs option],
3023 gcc_cv_as_gstabs_flag,
3024 [elf,2,11,0], [--gstabs], [$insn],
3025 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3026 # and warns about it, but still exits successfully. So check for
3028 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3030 else gcc_cv_as_gstabs_flag=yes
3032 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3033 [Define if your assembler supports the --gstabs option.])])
3036 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3037 gcc_cv_ld_ro_rw_mix=unknown
3038 if test $in_tree_ld = yes ; then
3039 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3040 && test $in_tree_ld_is_elf = yes; then
3041 gcc_cv_ld_ro_rw_mix=read-write
3043 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3044 echo '.section myfoosect, "a"' > conftest1.s
3045 echo '.section myfoosect, "aw"' > conftest2.s
3046 echo '.byte 1' >> conftest2.s
3047 echo '.section myfoosect, "a"' > conftest3.s
3048 echo '.byte 0' >> conftest3.s
3049 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3050 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3051 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3052 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3053 conftest2.o conftest3.o > /dev/null 2>&1; then
3054 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3055 | sed -e '/myfoosect/!d' -e N`
3056 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3057 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3058 gcc_cv_ld_ro_rw_mix=read-only
3060 gcc_cv_ld_ro_rw_mix=read-write
3065 rm -f conftest.* conftest[123].*
3068 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3069 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3070 [Define if your linker links a mix of read-only
3071 and read-write sections into a read-write section.])
3073 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3075 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3076 gcc_cv_ld_eh_frame_hdr=no
3077 if test $in_tree_ld = yes ; then
3078 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3079 && test $in_tree_ld_is_elf = yes; then
3080 gcc_cv_ld_eh_frame_hdr=yes
3082 elif test x$gcc_cv_ld != x; then
3083 # Check if linker supports --eh-frame-hdr option
3084 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3085 gcc_cv_ld_eh_frame_hdr=yes
3088 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3089 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3090 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3091 [Define if your linker supports --eh-frame-hdr option.])
3093 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3095 AC_MSG_CHECKING(linker position independent executable support)
3097 if test $in_tree_ld = yes ; then
3098 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3099 && test $in_tree_ld_is_elf = yes; then
3102 elif test x$gcc_cv_ld != x; then
3103 # Check if linker supports -pie option
3104 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3108 if test x"$gcc_cv_ld_pie" = xyes; then
3109 AC_DEFINE(HAVE_LD_PIE, 1,
3110 [Define if your linker supports -pie option.])
3112 AC_MSG_RESULT($gcc_cv_ld_pie)
3114 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3115 gcc_cv_ld_eh_gc_sections=no
3116 if test $in_tree_ld = yes ; then
3117 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3118 && test $in_tree_ld_is_elf = yes; then
3119 gcc_cv_ld_eh_gc_sections=yes
3121 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3122 cat > conftest.s <<EOF
3125 .type _start, @function
3128 .size _start, .-_start
3129 .section .text.foo,"ax",@progbits
3130 .type foo, @function
3134 .section .gcc_except_table.foo,"a",@progbits
3137 .section .eh_frame,"a",@progbits
3140 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3141 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3142 | grep "gc-sections option ignored" > /dev/null; then
3143 gcc_cv_ld_eh_gc_sections=no
3144 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3145 gcc_cv_ld_eh_gc_sections=yes
3146 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3147 if test x$gcc_cv_as_comdat_group != xyes; then
3148 gcc_cv_ld_eh_gc_sections=no
3149 cat > conftest.s <<EOF
3152 .type _start, @function
3155 .size _start, .-_start
3156 .section .gnu.linkonce.t.foo,"ax",@progbits
3157 .type foo, @function
3161 .section .gcc_except_table.foo,"a",@progbits
3164 .section .eh_frame,"a",@progbits
3167 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3168 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3169 | grep "gc-sections option ignored" > /dev/null; then
3170 gcc_cv_ld_eh_gc_sections=no
3171 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3172 gcc_cv_ld_eh_gc_sections=yes
3178 rm -f conftest.s conftest.o conftest
3182 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3183 gcc_cv_ld_eh_gc_sections=no
3186 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3187 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3188 [Define if your linker supports garbage collection of
3189 sections in presence of EH frames.])
3191 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3197 AC_CACHE_CHECK(linker --as-needed support,
3198 gcc_cv_ld_as_needed,
3199 [gcc_cv_ld_as_needed=no
3200 if test $in_tree_ld = yes ; then
3201 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3202 && test $in_tree_ld_is_elf = yes; then
3203 gcc_cv_ld_as_needed=yes
3205 elif test x$gcc_cv_ld != x; then
3206 # Check if linker supports --as-needed and --no-as-needed options
3207 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3208 gcc_cv_ld_as_needed=yes
3212 if test x"$gcc_cv_ld_as_needed" = xyes; then
3213 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3214 [Define if your linker supports --as-needed and --no-as-needed options.])
3217 case "$target:$tm_file" in
3218 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3219 AC_CACHE_CHECK(linker support for omitting dot symbols,
3220 gcc_cv_ld_no_dot_syms,
3221 [gcc_cv_ld_no_dot_syms=no
3222 if test $in_tree_ld = yes ; then
3223 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3224 gcc_cv_ld_no_dot_syms=yes
3226 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3227 cat > conftest1.s <<EOF
3231 cat > conftest2.s <<EOF
3232 .section ".opd","aw"
3237 .quad .LEfoo,.TOC.@tocbase,0
3243 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3244 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3245 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3246 gcc_cv_ld_no_dot_syms=yes
3248 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3251 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3252 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3253 [Define if your PowerPC64 linker only needs function descriptor syms.])
3258 AC_CACHE_CHECK(linker --sysroot support,
3260 [gcc_cv_ld_sysroot=no
3261 if test $in_tree_ld = yes ; then
3262 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3263 gcc_cv_ld_sysroot=yes
3265 elif test x$gcc_cv_ld != x; then
3266 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3267 gcc_cv_ld_sysroot=yes
3270 if test x"$gcc_cv_ld_sysroot" = xyes; then
3271 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3272 [Define if your linker supports --sysroot.])
3275 if test x$with_sysroot = x && test x$host = x$target \
3276 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3277 && test "$prefix" != "NONE"; then
3278 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3279 [Define to PREFIX/include if cpp should also search that directory.])
3282 # Test for stack protector support in target C library.
3283 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3284 gcc_cv_libc_provides_ssp,
3285 [gcc_cv_libc_provides_ssp=no
3288 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3289 if test "x$with_sysroot" = x; then
3290 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3291 elif test "x$with_sysroot" = xyes; then
3292 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3294 glibc_header_dir="${with_sysroot}/usr/include"
3297 glibc_header_dir=/usr/include
3299 # glibc 2.4 and later provides __stack_chk_fail and
3300 # either __stack_chk_guard, or TLS access to stack guard canary.
3301 if test -f $glibc_header_dir/features.h \
3302 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3303 $glibc_header_dir/features.h > /dev/null; then
3304 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3305 $glibc_header_dir/features.h > /dev/null; then
3306 gcc_cv_libc_provides_ssp=yes
3307 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3308 $glibc_header_dir/features.h > /dev/null \
3309 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3310 $glibc_header_dir/features.h > /dev/null; then
3311 gcc_cv_libc_provides_ssp=yes
3316 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3317 [echo "no __stack_chk_fail on this target"])
3319 *) gcc_cv_libc_provides_ssp=no ;;
3322 if test x$gcc_cv_libc_provides_ssp = xyes; then
3323 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3324 [Define if your target C library provides stack protector support])
3327 # Check if TFmode long double should be used by default or not.
3328 # Some glibc targets used DFmode long double, but with glibc 2.4
3329 # and later they can use TFmode.
3331 powerpc*-*-*gnu* | \
3335 AC_ARG_WITH(long-double-128,
3336 [ --with-long-double-128 Use 128-bit long double by default.],
3337 gcc_cv_target_ldbl128="$with_long_double_128",
3338 [gcc_cv_target_ldbl128=no
3339 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3340 if test "x$with_sysroot" = x; then
3341 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3342 elif test "x$with_sysroot" = xyes; then
3343 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3345 glibc_header_dir="${with_sysroot}/usr/include"
3348 glibc_header_dir=/usr/include
3351 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3352 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3353 && gcc_cv_target_ldbl128=yes
3358 if test x$gcc_cv_target_ldbl128 = xyes; then
3359 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3360 [Define if TFmode long double should be the default])
3363 # Find out what GC implementation we want, or may, use.
3365 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3373 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3376 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3381 echo "Using $GGC for garbage collection."
3383 # Use the system's zlib library.
3385 zlibinc="-I\$(srcdir)/../zlib"
3386 AC_ARG_WITH(system-zlib,
3387 [ --with-system-zlib use installed libz],
3394 dnl Very limited version of automake's enable-maintainer-mode
3396 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3397 dnl maintainer-mode is disabled by default
3398 AC_ARG_ENABLE(maintainer-mode,
3399 [ --enable-maintainer-mode
3400 enable make rules and dependencies not useful
3401 (and sometimes confusing) to the casual installer],
3402 maintainer_mode=$enableval,
3405 AC_MSG_RESULT($maintainer_mode)
3407 if test "$maintainer_mode" = "yes"; then
3418 # Make empty files to contain the specs and options for each language.
3419 # Then add #include lines to for a compiler that has specs and/or options.
3425 # These (without "all_") are set in each config-lang.in.
3426 # `language' must be a single word so is spelled singularly.
3429 all_outputs='Makefile gccbug libada-mk'
3430 # List of language makefile fragments.
3432 # List of language subdirectory makefiles. Deprecated.
3434 # Files for gengtype
3435 all_gtfiles="$target_gtfiles"
3436 # Files for gengtype with language
3437 all_gtfiles_files_langs=
3438 all_gtfiles_files_files=
3440 # These are the languages that are set in --enable-languages,
3441 # and are available in the GCC tree.
3442 all_selected_languages=
3444 # Add the language fragments.
3445 # Languages are added via two mechanisms. Some information must be
3446 # recorded in makefile variables, these are defined in config-lang.in.
3447 # We accumulate them and plug them into the main Makefile.
3448 # The other mechanism is a set of hooks for each of the main targets
3449 # like `clean', `install', etc.
3451 language_hooks="Make-hooks"
3453 for lang in ${srcdir}/*/config-lang.in
3456 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3458 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3459 if test "x$lang_alias" = x
3461 echo "$lang doesn't set \$language." 1>&2
3464 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3465 subdirs="$subdirs $subdir"
3466 case ",$enable_languages," in
3468 all_selected_languages="$all_selected_languages $lang_alias"
3469 if test -f $srcdir/$subdir/lang-specs.h; then
3470 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3482 . ${srcdir}/$subdir/config-lang.in
3483 if test "x$language" = x
3485 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3490 case ",$enable_languages," in
3493 for i in $subdir_requires; do
3494 test -f "${srcdir}/$i/config-lang.in" && continue
3502 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3503 if test -f $srcdir/$subdir/lang.opt; then
3504 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3506 if test -f $srcdir/$subdir/$subdir-tree.def; then
3507 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3509 if test -f ${srcdir}/$subdir/Makefile.in
3510 then all_lang_makefiles="$subdir/Makefile"
3512 all_languages="$all_languages $language"
3513 all_compilers="$all_compilers $compilers"
3514 all_outputs="$all_outputs $outputs"
3515 all_gtfiles="$all_gtfiles $gtfiles"
3518 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3519 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3523 # Pick up gtfiles for c
3526 . ${srcdir}/c-config-lang.in
3527 all_gtfiles="$all_gtfiles $gtfiles"
3530 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3531 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3535 for language in $all_selected_languages
3537 check_languages="$check_languages check-$language"
3540 # We link each language in with a set of hooks, reached indirectly via
3541 # lang.${target}. Only do so for selected languages.
3545 target_list="all.cross start.encap rest.encap tags \
3546 install-common install-man install-info dvi pdf html \
3547 uninstall info man srcextra srcman srcinfo \
3548 mostlyclean clean distclean maintainer-clean"
3550 for t in $target_list
3553 for lang in $all_selected_languages
3557 echo "lang.$t: $x" >> Make-hooks
3566 echo "dir ." > .gdbinit
3567 echo "dir ${srcdir}" >> .gdbinit
3568 if test x$gdb_needs_out_file_path = xyes
3570 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3572 if test "x$subdirs" != x; then
3575 echo "dir ${srcdir}/$s" >> .gdbinit
3578 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3580 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3581 # absolute path for gcc_tooldir based on inserting the number of up-directory
3582 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3583 # $(libsubdir)/@(unlibsubdir) based path.
3584 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3585 # make and thus we'd get different behavior depending on where we built the
3587 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3588 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3590 changequote(<<, >>)dnl
3591 # An explanation of the sed strings:
3592 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3593 # -e 's|/$||' match a trailing forward slash and eliminates it
3594 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3595 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3597 # (*) Note this pattern overwrites the first character of the string
3598 # with a forward slash if one is not already present. This is not a
3599 # problem because the exact names of the sub-directories concerned is
3600 # unimportant, just the number of them matters.
3602 # The practical upshot of these patterns is like this:
3604 # prefix exec_prefix result
3605 # ------ ----------- ------
3607 # /foo/ /foo/bar ../
3608 # /foo /foo/bar/ ../
3609 # /foo/ /foo/bar/ ../
3610 # /foo /foo/bar/ugg ../../
3613 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3614 changequote([, ])dnl
3616 AC_SUBST(gcc_tooldir)
3619 # Find a directory in which to install a shared libgcc.
3621 AC_ARG_ENABLE(version-specific-runtime-libs,
3622 [ --enable-version-specific-runtime-libs
3623 specify that runtime libraries should be
3624 installed in a compiler-specific directory])
3626 AC_ARG_WITH(slibdir,
3627 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3628 slibdir="$with_slibdir",
3629 if test "${enable_version_specific_runtime_libs+set}" = set; then
3630 slibdir='$(libsubdir)'
3631 elif test "$host" != "$target"; then
3632 slibdir='$(build_tooldir)/lib'
3638 objdir=`${PWDCMD-pwd}`
3641 AC_ARG_WITH(datarootdir,
3642 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3643 datarootdir="\${prefix}/$with_datarootdir",
3644 datarootdir='$(prefix)/share')
3645 AC_SUBST(datarootdir)
3648 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3649 docdir="\${prefix}/$with_docdir",
3650 docdir='$(datarootdir)')
3653 AC_ARG_WITH(htmldir,
3654 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3655 htmldir="\${prefix}/$with_htmldir",
3656 htmldir='$(docdir)')
3659 # Substitute configuration variables
3662 AC_SUBST(all_compilers)
3663 AC_SUBST(all_gtfiles)
3664 AC_SUBST(all_gtfiles_files_langs)
3665 AC_SUBST(all_gtfiles_files_files)
3666 AC_SUBST(all_lang_makefrags)
3667 AC_SUBST(all_lang_makefiles)
3668 AC_SUBST(all_languages)
3669 AC_SUBST(all_selected_languages)
3670 AC_SUBST(build_exeext)
3671 AC_SUBST(build_install_headers_dir)
3672 AC_SUBST(build_xm_file_list)
3673 AC_SUBST(build_xm_include_list)
3674 AC_SUBST(build_xm_defines)
3675 AC_SUBST(check_languages)
3676 AC_SUBST(cpp_install_dir)
3677 AC_SUBST(xmake_file)
3678 AC_SUBST(tmake_file)
3679 AC_SUBST(extra_gcc_objs)
3680 AC_SUBST(extra_headers_list)
3681 AC_SUBST(extra_objs)
3682 AC_SUBST(extra_parts)
3683 AC_SUBST(extra_passes)
3684 AC_SUBST(extra_programs)
3685 AC_SUBST(float_h_file)
3686 AC_SUBST(gcc_config_arguments)
3687 AC_SUBST(gcc_gxx_include_dir)
3688 AC_SUBST(host_exeext)
3689 AC_SUBST(host_xm_file_list)
3690 AC_SUBST(host_xm_include_list)
3691 AC_SUBST(host_xm_defines)
3692 AC_SUBST(out_host_hook_obj)
3694 AC_SUBST(lang_opt_files)
3695 AC_SUBST(lang_specs_files)
3696 AC_SUBST(lang_tree_files)
3697 AC_SUBST(local_prefix)
3699 AC_SUBST(objc_boehm_gc)
3701 AC_SUBST(out_object_file)
3702 AC_SUBST(thread_file)
3703 AC_SUBST(tm_file_list)
3704 AC_SUBST(tm_include_list)
3705 AC_SUBST(tm_defines)
3706 AC_SUBST(tm_p_file_list)
3707 AC_SUBST(tm_p_include_list)
3708 AC_SUBST(xm_file_list)
3709 AC_SUBST(xm_include_list)
3710 AC_SUBST(xm_defines)
3711 AC_SUBST(c_target_objs)
3712 AC_SUBST(cxx_target_objs)
3713 AC_SUBST(target_cpu_default)
3715 AC_SUBST_FILE(language_hooks)
3718 if test x${build} = x${host} ; then
3719 if test x${host} = x${target} ; then
3720 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3722 echo "Links are now set up to build a cross-compiler" 1>&2
3723 echo " from ${host} to ${target}." 1>&2
3726 if test x${host} = x${target} ; then
3727 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3728 echo " for ${target}." 1>&2
3730 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3731 echo " from ${host} to ${target}." 1>&2
3735 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3736 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3738 # Configure the subdirectories
3739 # AC_CONFIG_SUBDIRS($subdirs)
3741 # Create the Makefile
3742 # and configure language subdirectories
3743 AC_CONFIG_FILES($all_outputs)
3745 AC_CONFIG_COMMANDS([default],
3747 case ${CONFIG_HEADERS} in
3748 *auto-host.h:config.in*)
3751 # Make sure all the subdirs exist.
3752 for d in $subdirs doc build
3754 test -d $d || mkdir $d
3757 [subdirs='$subdirs'])