2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
5 # Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 2, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING. If not, write to the Free
21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 changequote(<<, >>)dnl
145 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
150 AC_ARG_WITH(cpp_install_dir,
151 [ --with-cpp-install-dir=DIR
152 install the user visible C preprocessor in DIR
153 (relative to PREFIX) as well as PREFIX/bin],
154 [if test x$withval = xyes; then
155 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
156 elif test x$withval != xno; then
157 cpp_install_dir=$withval
160 # We would like to our source tree to be readonly. However when releases or
161 # pre-releases are generated, the flex/bison generated files as well as the
162 # various formats of manuals need to be included along with the rest of the
163 # sources. Therefore we have --enable-generated-files-in-srcdir to do
166 AC_MSG_CHECKING([whether to place generated files in the source directory])
167 dnl generated-files-in-srcdir is disabled by default
168 AC_ARG_ENABLE(generated-files-in-srcdir,
169 [ --enable-generated-files-in-srcdir
170 put copies of generated files in source dir
171 intended for creating source tarballs for users
172 without texinfo bison or flex.],
173 generated_files_in_srcdir=$enableval,
174 generated_files_in_srcdir=no)
176 AC_MSG_RESULT($generated_files_in_srcdir)
178 if test "$generated_files_in_srcdir" = "yes"; then
185 # -------------------
186 # Find default linker
187 # -------------------
191 [ --with-gnu-ld arrange to work with GNU ld.],
192 gnu_ld_flag="$with_gnu_ld",
195 # With pre-defined ld
197 [ --with-ld arrange to use the specified ld (full pathname)],
198 DEFAULT_LINKER="$with_ld")
199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
200 if test ! -x "$DEFAULT_LINKER"; then
201 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
202 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
205 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
206 [Define to enable the use of a default linker.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 AC_MSG_CHECKING([whether a default assembler was specified])
250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
251 if test x"$gas_flag" = x"no"; then
252 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
254 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
264 # If a non-executable a.out is present (e.g. created by GNU as above even if
265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
266 # file, even when creating an executable, so an execution test fails.
267 # Remove possible default executable files to avoid this.
269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
270 # Autoconf includes it.
271 rm -f a.out a.exe b.out
273 # Find the native compiler
276 # autoconf is lame and doesn't give us any substitution variable for this.
277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
278 NO_MINUS_C_MINUS_O=yes
280 OUTPUT_OPTION='-o $@'
282 AC_SUBST(NO_MINUS_C_MINUS_O)
283 AC_SUBST(OUTPUT_OPTION)
285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
286 # optimizations to be activated explicitly by the toplevel.
289 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
293 # -------------------------
294 # Check C compiler features
295 # -------------------------
300 # sizeof(char) is 1 by definition.
301 AC_CHECK_SIZEOF(void *)
302 AC_CHECK_SIZEOF(short)
304 AC_CHECK_SIZEOF(long)
305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
308 # ---------------------
309 # Warnings and checking
310 # ---------------------
312 # Check $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
320 [whether ${CC} accepts -Wno-long-long],
321 [ac_cv_prog_cc_w_no_long_long],
322 [save_CFLAGS="$CFLAGS"
323 CFLAGS="-Wno-long-long"
324 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
325 [ac_cv_prog_cc_w_no_long_long=yes],
326 [ac_cv_prog_cc_w_no_long_long=no])
327 CFLAGS="$save_CFLAGS"
331 [whether ${CC} accepts -Wno-variadic-macros],
332 [ac_cv_prog_cc_w_no_variadic_macros],
333 [save_CFLAGS="$CFLAGS"
334 CFLAGS="-Wno-variadic-macros"
335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
336 [ac_cv_prog_cc_w_no_variadic_macros=yes],
337 [ac_cv_prog_cc_w_no_variadic_macros=no])
338 CFLAGS="$save_CFLAGS"
342 [whether ${CC} accepts -Wno-overlength-strings],
343 [ac_cv_prog_cc_w_no_overlength_strings],
344 [save_CFLAGS="$CFLAGS"
345 CFLAGS="-Wno-overlength-strings"
346 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
347 [ac_cv_prog_cc_w_no_overlength_strings=yes],
348 [ac_cv_prog_cc_w_no_overlength_strings=no])
349 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_no_long_long = yes \
354 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
355 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
356 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
359 # Add -Wold-style-definition if it's accepted
361 [whether ${CC} accepts -Wold-style-definition],
362 [ac_cv_prog_cc_w_old_style_definition],
363 [save_CFLAGS="$CFLAGS"
364 CFLAGS="-Wold-style-definition"
365 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
366 [ac_cv_prog_cc_w_old_style_definition=yes],
367 [ac_cv_prog_cc_w_old_style_definition=no])
368 CFLAGS="$save_CFLAGS"
370 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
371 strict1_warn="${strict1_warn} -Wold-style-definition"
374 # Add -Wmissing-format-attribute if it's accepted
376 [whether ${CC} accepts -Wmissing-format-attribute],
377 [ac_cv_prog_cc_w_missing_format_attribute],
378 [save_CFLAGS="$CFLAGS"
379 CFLAGS="-Wmissing-format-attribute"
380 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
381 [ac_cv_prog_cc_w_missing_format_attribute=yes],
382 [ac_cv_prog_cc_w_missing_format_attribute=no])
383 CFLAGS="$save_CFLAGS"
385 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
386 strict1_warn="${strict1_warn} -Wmissing-format-attribute"
389 # Enable -Werror, period.
390 AC_ARG_ENABLE(werror_always,
391 [ --enable-werror-always enable -Werror always], [],
392 [enable_werror_always=no])
393 if test x${enable_werror_always} = xyes ; then
394 strict1_warn="${strict1_warn} -Werror"
398 AC_SUBST(strict1_warn)
400 # Get C++ compatibility warning flag, if supported.
402 [whether ${CC} accepts -Wc++-compat],
403 [ac_cv_prog_cc_w_cxx_compat],
404 [save_CFLAGS="$CFLAGS"
405 CFLAGS="-Wc++-compat"
406 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
407 [ac_cv_prog_cc_w_cxx_compat=yes],
408 [ac_cv_prog_cc_w_cxx_compat=no])
409 CFLAGS="$save_CFLAGS"
411 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
412 cxx_compat_warn="-Wc++-compat"
414 AC_SUBST(cxx_compat_warn)
417 # If the native compiler is GCC, we can enable warnings even in stage1.
418 # That's useful for people building cross-compilers, or just running a
421 if test "x$GCC" = "xyes"; then
422 warn_cflags='$(GCC_WARN_CFLAGS)'
424 AC_SUBST(warn_cflags)
426 # Enable -Werror in bootstrap stage2 and later.
428 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
431 AC_ARG_ENABLE(werror,
432 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
433 [if test x$is_release = x ; then
434 # Default to "yes" on development branches.
437 # Default to "no" on release branches.
440 if test x$enable_werror = xyes ; then
445 # Enable expensive internal checks
446 AC_ARG_ENABLE(checking,
447 [ --enable-checking[=LIST]
448 enable expensive run-time checks. With LIST,
449 enable only specific categories of checks.
450 Categories are: yes,no,all,none,release.
451 Flags are: assert,fold,gc,gcac,misc,
452 rtlflag,rtl,runtime,tree,valgrind.],
453 [ac_checking_flags="${enableval}"],[
454 # Determine the default checks.
455 if test x$is_release = x ; then
456 ac_checking_flags=yes
458 ac_checking_flags=release
464 ac_gc_always_collect=
467 ac_runtime_checking=1
469 ac_valgrind_checking=
470 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
471 for check in $ac_checking_flags
474 # these set all the flags to specific states
475 yes) ac_assert_checking=1 ; ac_checking=1 ;
476 ac_fold_checking= ; ac_gc_checking=1 ;
477 ac_gc_always_collect= ; ac_rtl_checking= ;
478 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
479 ac_tree_checking=1 ; ac_valgrind_checking= ;;
480 no|none) ac_assert_checking= ; ac_checking= ;
481 ac_fold_checking= ; ac_gc_checking= ;
482 ac_gc_always_collect= ; ac_rtl_checking= ;
483 ac_rtlflag_checking= ; ac_runtime_checking= ;
484 ac_tree_checking= ; ac_valgrind_checking= ;;
485 all) ac_assert_checking=1 ; ac_checking=1 ;
486 ac_fold_checking=1 ; ac_gc_checking=1 ;
487 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
488 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
489 ac_tree_checking=1 ; ac_valgrind_checking= ;;
490 release) ac_assert_checking=1 ; ac_checking= ;
491 ac_fold_checking= ; ac_gc_checking= ;
492 ac_gc_always_collect= ; ac_rtl_checking= ;
493 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
494 ac_tree_checking= ; ac_valgrind_checking= ;;
495 # these enable particular checks
496 assert) ac_assert_checking=1 ;;
497 fold) ac_fold_checking=1 ;;
498 gc) ac_gc_checking=1 ;;
499 gcac) ac_gc_always_collect=1 ;;
500 misc) ac_checking=1 ;;
501 rtl) ac_rtl_checking=1 ;;
502 rtlflag) ac_rtlflag_checking=1 ;;
503 runtime) ac_runtime_checking=1 ;;
504 tree) ac_tree_checking=1 ;;
505 valgrind) ac_valgrind_checking=1 ;;
506 *) AC_MSG_ERROR(unknown check category $check) ;;
512 if test x$ac_checking != x ; then
513 AC_DEFINE(ENABLE_CHECKING, 1,
514 [Define if you want more run-time sanity checks. This one gets a grab
515 bag of miscellaneous but relatively cheap checks.])
516 nocommon_flag=-fno-common
518 AC_SUBST(nocommon_flag)
519 if test x$ac_assert_checking != x ; then
520 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
521 [Define if you want assertions enabled. This is a cheap check.])
523 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
524 if test x$ac_runtime_checking != x ; then
525 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
526 [Define if you want runtime assertions enabled. This is a cheap check.])
528 if test x$ac_tree_checking != x ; then
529 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
530 [Define if you want all operations on trees (the basic data
531 structure of the front ends) to be checked for dynamic type safety
532 at runtime. This is moderately expensive. The tree browser debugging
533 routines will also be enabled by this option.
535 TREEBROWSER=tree-browser.o
537 AC_SUBST(TREEBROWSER)
538 if test x$ac_rtl_checking != x ; then
539 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
540 [Define if you want all operations on RTL (the basic data structure
541 of the optimizer and back end) to be checked for dynamic type safety
542 at runtime. This is quite expensive.])
544 if test x$ac_rtlflag_checking != x ; then
545 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
546 [Define if you want RTL flag accesses to be checked against the RTL
547 codes that are supported for each access macro. This is relatively
550 if test x$ac_gc_checking != x ; then
551 AC_DEFINE(ENABLE_GC_CHECKING, 1,
552 [Define if you want the garbage collector to do object poisoning and
553 other memory allocation checks. This is quite expensive.])
555 if test x$ac_gc_always_collect != x ; then
556 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
557 [Define if you want the garbage collector to operate in maximally
558 paranoid mode, validating the entire heap and collecting garbage at
559 every opportunity. This is extremely expensive.])
561 if test x$ac_fold_checking != x ; then
562 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
563 [Define if you want fold checked that it never destructs its argument.
564 This is quite expensive.])
566 valgrind_path_defines=
569 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
570 dnl # an if statement. This was the source of very frustrating bugs
571 dnl # in converting to autoconf 2.5x!
572 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
574 if test x$ac_valgrind_checking != x ; then
575 # It is certainly possible that there's valgrind but no valgrind.h.
576 # GCC relies on making annotations so we must have both.
577 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
578 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
579 [[#include <valgrind/memcheck.h>
580 #ifndef VALGRIND_DISCARD
581 #error VALGRIND_DISCARD not defined
583 [gcc_cv_header_valgrind_memcheck_h=yes],
584 [gcc_cv_header_valgrind_memcheck_h=no])
585 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
586 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
587 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
588 [[#include <memcheck.h>
589 #ifndef VALGRIND_DISCARD
590 #error VALGRIND_DISCARD not defined
592 [gcc_cv_header_memcheck_h=yes],
593 [gcc_cv_header_memcheck_h=no])
594 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
595 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
596 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
597 if test "x$valgrind_path" = "x" \
598 || (test $have_valgrind_h = no \
599 && test $gcc_cv_header_memcheck_h = no \
600 && test $gcc_cv_header_valgrind_memcheck_h = no); then
601 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
603 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
604 valgrind_command="$valgrind_path -q"
605 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
606 [Define if you want to run subprograms and generated programs
607 through valgrind (a memory checker). This is extremely expensive.])
608 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
609 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
610 [Define if valgrind's valgrind/memcheck.h header is installed.])
612 if test $gcc_cv_header_memcheck_h = yes; then
613 AC_DEFINE(HAVE_MEMCHECK_H, 1,
614 [Define if valgrind's memcheck.h header is installed.])
617 AC_SUBST(valgrind_path_defines)
618 AC_SUBST(valgrind_command)
620 AC_ARG_ENABLE(mapped-location,
621 [ --enable-mapped-location location_t is fileline integer cookie],,
622 enable_mapped_location=no)
624 if test "$enable_mapped_location" = yes ; then
625 AC_DEFINE(USE_MAPPED_LOCATION, 1,
626 [Define if location_t is fileline integer cookie.])
629 # Enable code coverage collection
630 AC_ARG_ENABLE(coverage,
631 [ --enable-coverage[=LEVEL]
632 enable compiler's code coverage collection.
633 Use to measure compiler performance and locate
634 unused parts of the compiler. With LEVEL, specify
635 optimization. Values are opt, noopt,
637 [case "${enableval}" in
639 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
642 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
645 # a.k.a. --disable-coverage
649 AC_MSG_ERROR(unknown coverage setting $enableval)
653 AC_SUBST(coverage_flags)
655 AC_ARG_ENABLE(gather-detailed-mem-stats,
656 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
657 [enable_gather_detailed_mem_stats=no])
658 if test x$enable_gather_detailed_mem_stats = xyes ; then
659 AC_DEFINE(GATHER_STATISTICS, 1,
660 [Define to enable detailed memory allocation stats gathering.])
663 # -------------------------------
664 # Miscenalleous configure options
665 # -------------------------------
669 [ --with-stabs arrange to use stabs instead of host debug format],
673 # Determine whether or not multilibs are enabled.
674 AC_ARG_ENABLE(multilib,
675 [ --enable-multilib enable library support for multiple ABIs],
676 [], [enable_multilib=yes])
677 AC_SUBST(enable_multilib)
679 # Enable __cxa_atexit for C++.
680 AC_ARG_ENABLE(__cxa_atexit,
681 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
684 # Enable C extension for decimal float if target supports it.
685 AC_ARG_ENABLE(decimal-float,
686 [ --enable-decimal-float enable decimal float extension to C],
688 if test x$enablevar = xyes ; then
690 powerpc*-*-linux* | i?86*-*-linux*)
691 enable_decimal_float=yes
694 AC_MSG_WARN(decimal float is not supported for this target, ignored)
695 enable_decimal_float=no
699 ], [enable_decimal_float=no])
701 AC_SUBST(enable_decimal_float)
703 dfp=`if test $enable_decimal_float = yes; then echo 1; else echo 0; fi`
704 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
705 [Define to 1 to enable decimal float extension to C.])
708 # Pass with no value to take the default
709 # Pass with a value to specify a thread package
710 AC_ARG_ENABLE(threads,
711 [ --enable-threads enable thread usage for target GCC
712 --enable-threads=LIB use LIB thread package for target GCC],,
716 [ --enable-tls enable or disable generation of tls code
717 overriding the assembler check for tls support],
721 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
722 Valid choices are 'yes' and 'no'.]) ;;
726 AC_ARG_ENABLE(objc-gc,
727 [ --enable-objc-gc enable the use of Boehm's garbage collector with
728 the GNU Objective-C runtime],
729 if test x$enable_objc_gc = xno; then
737 [ --with-dwarf2 force the default debug format to be DWARF 2],
738 dwarf2="$with_dwarf2",
741 AC_ARG_ENABLE(shared,
742 [ --disable-shared don't provide a shared libgcc],
744 case $enable_shared in
748 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
749 for pkg in $enableval; do
750 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
757 ], [enable_shared=yes])
758 AC_SUBST(enable_shared)
760 AC_ARG_WITH(build-sysroot,
761 [ --with-build-sysroot=sysroot
762 use sysroot as the system root during the build])
765 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
767 case ${with_sysroot} in
768 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
769 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
772 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
773 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
775 if test "x$exec_prefix" = xNONE; then
776 if test "x$prefix" = xNONE; then
777 test_prefix=/usr/local
782 test_prefix=$exec_prefix
784 case ${TARGET_SYSTEM_ROOT} in
785 "${test_prefix}"|"${test_prefix}/"*|\
786 '${exec_prefix}'|'${exec_prefix}/'*)
787 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
788 TARGET_SYSTEM_ROOT_DEFINE="$t"
793 TARGET_SYSTEM_ROOT_DEFINE=
794 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
796 AC_SUBST(TARGET_SYSTEM_ROOT)
797 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
798 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
800 # Build with intermodule optimisations
801 AC_ARG_ENABLE(intermodule,
802 [ --enable-intermodule build the compiler in one step],
803 [case ${enable_intermodule} in
804 yes) onestep="-onestep";;
810 # Sanity check enable_languages in case someone does not run the toplevel
811 # configure # script.
812 AC_ARG_ENABLE(languages,
813 [ --enable-languages=LIST specify which front-ends to build],
814 [case ,${enable_languages}, in
816 # go safe -- we cannot be much sure without the toplevel
818 # analysis of which target libs are present and usable
822 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
827 enable_languages=c,${enable_languages}
830 [enable_languages=c])
832 # Used by documentation targets
833 AC_SUBST(datarootdir)
837 # -------------------------
838 # Checks for other programs
839 # -------------------------
843 # Find some useful tools
845 # We need awk to create options.c and options.h.
846 # Bail out if it's missing.
848 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
856 # By default, the Darwin ranlib will not treat common symbols as
857 # definitions when building the archive table of contents. Other
858 # ranlibs do that; pass an option to the Darwin ranlib that makes
859 # it behave similarly.
865 AC_SUBST(ranlib_flags)
869 # See if cmp has --ignore-initial.
870 gcc_AC_PROG_CMP_IGNORE_INITIAL
872 # See if we have the mktemp command.
873 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
875 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
877 # See if makeinfo has been installed and is modern enough
878 # that we can use it.
879 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
880 [GNU texinfo.* \([0-9][0-9.]*\)],
882 if test $gcc_cv_prog_makeinfo_modern = no; then
883 MAKEINFO="$MISSING makeinfo"
885 *** Makeinfo is missing or too old.
886 *** Info documentation will not be built.])
893 # Is pod2man recent enough to regenerate manpages?
894 AC_MSG_CHECKING([for recent Pod::Man])
895 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
897 GENERATED_MANPAGES=generated-manpages
902 AC_SUBST(GENERATED_MANPAGES)
905 dnl Don't use AC_PROG_LEX; we insist on flex.
906 dnl LEXLIB is not useful in gcc.
907 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
910 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
912 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
913 # check for build == host before using them.
916 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
917 && test -d ../binutils ; then
918 NM='$(objdir)/../binutils/nm-new'
920 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
924 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
925 && test -d ../binutils ; then
926 AR='$(objdir)/../binutils/ar'
928 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
932 # --------------------
933 # Checks for C headers
934 # --------------------
936 AC_MSG_CHECKING(for GNU C library)
937 AC_CACHE_VAL(gcc_cv_glibc,
938 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
939 [[#include <features.h>]], [[
940 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
941 #error Not a GNU C library system
945 AC_MSG_RESULT($gcc_cv_glibc)
946 if test $gcc_cv_glibc = yes; then
947 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
950 # Need to reject headers which give warnings, so that the -Werror bootstrap
951 # works later. *sigh* This needs to come before all header checks.
958 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
959 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
960 sys/resource.h sys/param.h sys/times.h sys/stat.h \
961 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
963 # Check for thread headers.
964 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
965 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
967 # These tests can't be done till we know if we have limits.h.
975 # Stage specific cflags for build.
981 stage1_cflags="-Wa,-J"
987 AC_SUBST(stage1_cflags)
989 # These libraries may be used by collect2.
990 # We may need a special search path to get them linked.
991 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
993 for libs in '' -lld -lmld \
994 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
995 '-L/usr/lib/cmplrs/cc3.11 -lmld'
998 AC_TRY_LINK_FUNC(ldopen,
999 [gcc_cv_collect2_libs="$libs"; break])
1002 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1003 case $gcc_cv_collect2_libs in
1005 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1007 AC_SUBST(COLLECT2_LIBS)
1009 # When building Ada code on Alpha, we need exc_resume which is usually in
1010 # -lexc. So test for it.
1013 AC_SEARCH_LIBS(exc_resume, exc)
1016 AC_SUBST(GNAT_LIBEXC)
1018 # Some systems put ldexp and frexp in libm instead of libc; assume
1019 # they're both in the same place. jcf-dump needs them.
1022 AC_SEARCH_LIBS(ldexp, m)
1027 # Use <inttypes.h> only if it exists,
1028 # doesn't clash with <sys/types.h>, and declares intmax_t.
1029 AC_MSG_CHECKING(for inttypes.h)
1030 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1031 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1032 [[#include <sys/types.h>
1033 #include <inttypes.h>]],
1034 [[intmax_t i = -1;]])],
1035 [gcc_cv_header_inttypes_h=yes],
1036 [gcc_cv_header_inttypes_h=no])])
1037 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1038 if test $gcc_cv_header_inttypes_h = yes; then
1039 AC_DEFINE(HAVE_INTTYPES_H, 1,
1040 [Define if you have a working <inttypes.h> header file.])
1043 dnl Disabled until we have a complete test for buggy enum bitfields.
1044 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1046 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1047 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1048 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1049 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1050 putchar_unlocked putc_unlocked)
1051 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1052 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1053 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1056 if test x$ac_cv_func_mbstowcs = xyes; then
1057 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1058 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1064 [gcc_cv_func_mbstowcs_works=yes],
1065 [gcc_cv_func_mbstowcs_works=no],
1066 [gcc_cv_func_mbstowcs_works=yes])])
1067 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1068 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1069 [Define this macro if mbstowcs does not crash when its
1070 first argument is NULL.])
1074 AC_CHECK_TYPE(ssize_t, int)
1076 # Try to determine the array type of the second argument of getgroups
1077 # for the target system (int or gid_t).
1079 if test "${target}" = "${build}"; then
1080 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1083 # This condition may need some tweaking. It should include all
1084 # targets where the array type of the second argument of getgroups
1085 # is int and the type of gid_t is not equivalent to int.
1086 *-*-sunos* | *-*-ultrix*)
1087 TARGET_GETGROUPS_T=int
1090 TARGET_GETGROUPS_T=gid_t
1094 AC_SUBST(TARGET_GETGROUPS_T)
1096 gcc_AC_FUNC_MMAP_BLACKLIST
1100 # Under VMS, vfork works very differently than on Unix. The standard test
1101 # won't work, and it isn't easily adaptable. It makes more sense to
1103 ac_cv_func_vfork_works=yes
1109 # Until we have in-tree GNU iconv:
1111 AC_SUBST(LIBICONV_DEP)
1117 # We will need to find libiberty.h and ansidecl.h
1118 saved_CFLAGS="$CFLAGS"
1119 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1120 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1121 strsignal strstr strverscmp \
1122 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1123 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1124 #include "ansidecl.h"
1125 #include "system.h"])
1127 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1128 #include "ansidecl.h"
1130 #ifdef HAVE_SYS_RESOURCE_H
1131 #include <sys/resource.h>
1135 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1136 #include "ansidecl.h"
1138 #ifdef HAVE_SYS_RESOURCE_H
1139 #include <sys/resource.h>
1141 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1142 [Define to \`long' if <sys/resource.h> doesn't define.])])
1144 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1145 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1146 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1147 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1148 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1149 #include "ansidecl.h"
1158 gcc_AC_CHECK_DECLS(times, , ,[
1159 #include "ansidecl.h"
1161 #ifdef HAVE_SYS_TIMES_H
1162 #include <sys/times.h>
1166 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1167 #include "ansidecl.h"
1172 # More time-related stuff.
1173 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1174 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1175 #include "ansidecl.h"
1177 #ifdef HAVE_SYS_TIMES_H
1178 #include <sys/times.h>
1180 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1181 if test $ac_cv_struct_tms = yes; then
1182 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1183 [Define if <sys/times.h> defines struct tms.])
1186 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1187 # revisit after autoconf 2.50.
1188 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1189 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1190 #include "ansidecl.h"
1192 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1193 if test $gcc_cv_type_clock_t = yes; then
1194 AC_DEFINE(HAVE_CLOCK_T, 1,
1195 [Define if <time.h> defines clock_t.])
1198 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1199 CFLAGS="$saved_CFLAGS"
1201 gcc_AC_INITFINI_ARRAY
1203 # mkdir takes a single argument on some systems.
1204 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1212 # With Setjmp/Longjmp based exception handling.
1213 AC_ARG_ENABLE(sjlj-exceptions,
1214 [ --enable-sjlj-exceptions
1215 arrange to use setjmp/longjmp exception handling],
1216 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1217 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1218 [Define 0/1 to force the choice for exception handling model.])])
1220 # For platforms with the unwind ABI which includes an unwind library,
1221 # libunwind, we can choose to use the system libunwind.
1222 AC_ARG_WITH(system-libunwind,
1223 [ --with-system-libunwind use installed libunwind])
1225 # config.gcc also contains tests of with_system_libunwind.
1226 if test x$with_system_libunwind = xyes; then
1227 AC_DEFINE(HAVE_GETIPINFO, 1,
1228 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1231 # --------------------------------------------------------
1232 # Build, host, and target specific configuration fragments
1233 # --------------------------------------------------------
1235 # Collect build-machine-specific information.
1236 . ${srcdir}/config.build
1238 # Collect host-machine-specific information.
1239 . ${srcdir}/config.host
1243 # Collect target-machine-specific information.
1244 . ${srcdir}/config.gcc
1246 extra_objs="${host_extra_objs} ${extra_objs}"
1247 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1249 # Default the target-machine variables that were not explicitly set.
1250 if test x"$tm_file" = x
1251 then tm_file=$cpu_type/$cpu_type.h; fi
1253 if test x"$extra_headers" = x
1254 then extra_headers=; fi
1256 if test x$md_file = x
1257 then md_file=$cpu_type/$cpu_type.md; fi
1259 if test x$out_file = x
1260 then out_file=$cpu_type/$cpu_type.c; fi
1262 if test x"$tmake_file" = x
1263 then tmake_file=$cpu_type/t-$cpu_type
1266 if test x"$dwarf2" = xyes
1267 then tm_file="$tm_file tm-dwarf2.h"
1270 # Say what files are being used for the output code and MD file.
1271 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1272 echo "Using \`$srcdir/config/$md_file' as machine description file."
1274 # If any of the xm_file variables contain nonexistent files, warn
1275 # about them and drop them.
1278 for x in $build_xm_file; do
1279 if test -f $srcdir/config/$x
1281 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1287 for x in $host_xm_file; do
1288 if test -f $srcdir/config/$x
1290 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1296 for x in $xm_file; do
1297 if test -f $srcdir/config/$x
1299 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1305 for f in $tm_file; do
1308 if test $count = ax; then
1309 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1311 echo "Using the following target machine macro files:"
1312 for f in $tm_file; do
1313 echo " $srcdir/config/$f"
1317 if test x$need_64bit_hwint = xyes; then
1318 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1319 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1322 if test x$use_long_long_for_widest_fast_int = xyes; then
1323 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1324 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1325 efficiently supported by the host hardware.])
1329 for f in $host_xm_file; do
1332 if test $count = a; then
1334 elif test $count = ax; then
1335 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1337 echo "Using the following host machine macro files:"
1338 for f in $host_xm_file; do
1339 echo " $srcdir/config/$f"
1342 echo "Using ${out_host_hook_obj} for host machine hooks."
1344 if test "$host_xm_file" != "$build_xm_file"; then
1346 for f in $build_xm_file; do
1349 if test $count = a; then
1351 elif test $count = ax; then
1352 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1354 echo "Using the following build machine macro files:"
1355 for f in $build_xm_file; do
1356 echo " $srcdir/config/$f"
1363 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1364 gcc_cv_mcontext_underscores,
1366 #include <sys/signal.h>
1367 #include <ucontext.h>
1368 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1370 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1371 if test $gcc_cv_mcontext_underscores = yes; then
1372 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1373 [mcontext_t fields start with __])
1382 # Check if a valid thread package
1383 case ${enable_threads} in
1386 target_thread_file='single'
1390 target_thread_file='single'
1392 aix | dce | gnat | irix | posix | posix95 | rtems | \
1393 single | solaris | vxworks | win32 )
1394 target_thread_file=${enable_threads}
1397 echo "${enable_threads} is an unknown thread package" 1>&2
1402 if test x${thread_file} = x; then
1403 # No thread file set by target-specific clauses in config.gcc,
1404 # so use file chosen by default logic above
1405 thread_file=${target_thread_file}
1408 # Make gthr-default.h if we have a thread file.
1410 if test $thread_file != single; then
1411 rm -f gthr-default.h
1412 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1413 gthread_flags=-DHAVE_GTHR_DEFAULT
1415 AC_SUBST(gthread_flags)
1422 if test x$enable___cxa_atexit = xyes || \
1423 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1424 if test x$host = x$target; then
1426 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1427 # keyed to flag_use_cxa_atexit
1432 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1433 [echo "__cxa_atexit can't be enabled on this target"])
1437 # We can't check for __cxa_atexit when building a cross, so assume
1441 if test x$use_cxa_atexit = xyes; then
1442 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1443 [Define if you want to use __cxa_atexit, rather than atexit, to
1444 register C++ destructors for local statics and global objects.
1445 This is essential for fully standards-compliant handling of
1446 destructors, but requires __cxa_atexit in libc.])
1451 if test x$with_system_libunwind = xyes; then
1452 if test x$host = x$target; then
1453 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1456 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1457 if test x$use_getipinfo = xyes; then
1458 AC_DEFINE(HAVE_GETIPINFO, 1,
1459 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1461 echo "The system unwind library does not support _Unwind_GetIPInfo."
1464 # Look for a file containing extra machine modes.
1465 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1466 extra_modes_file='$(srcdir)'/config/${extra_modes}
1467 AC_SUBST(extra_modes_file)
1468 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1469 [Define to the name of a file containing a list of extra machine modes
1470 for this architecture.])
1473 # Convert extra_options into a form suitable for Makefile use.
1475 for f in $extra_options; do
1476 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1478 AC_SUBST(extra_opt_files)
1480 # auto-host.h is the file containing items generated by autoconf and is
1481 # the first file included by config.h.
1482 # If host=build, it is correct to have bconfig include auto-host.h
1483 # as well. If host!=build, we are in error and need to do more
1484 # work to find out the build config parameters.
1485 if test x$host = x$build
1487 build_auto=auto-host.h
1489 # We create a subdir, then run autoconf in the subdir.
1490 # To prevent recursion we set host and build for the new
1491 # invocation of configure to the build for this invocation
1498 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1499 *) realsrcdir=../${srcdir};;
1501 saved_CFLAGS="${CFLAGS}"
1502 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1503 ${realsrcdir}/configure \
1504 --enable-languages=${enable_languages-all} \
1505 --target=$target_alias --host=$build_alias --build=$build_alias
1506 CFLAGS="${saved_CFLAGS}"
1508 # We just finished tests for the build machine, so rename
1509 # the file auto-build.h in the gcc directory.
1510 mv auto-host.h ../auto-build.h
1513 build_auto=auto-build.h
1515 AC_SUBST(build_subdir)
1517 tm_file="${tm_file} defaults.h"
1518 tm_p_file="${tm_p_file} tm-preds.h"
1519 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1520 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1521 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1522 # put this back in temporarily.
1523 xm_file="auto-host.h ansidecl.h ${xm_file}"
1530 # Compile in configure arguments.
1531 if test -f configargs.h ; then
1532 # Being re-configured.
1533 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1534 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1536 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1539 # Double all backslashes and backslash all quotes to turn
1540 # gcc_config_arguments into a C string.
1541 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1542 $gcc_config_arguments
1544 gcc_config_arguments_str=`cat conftest.out`
1547 cat > configargs.h <<EOF
1548 /* Generated automatically. */
1549 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1550 static const char thread_model[] = "$thread_file";
1552 static const struct {
1553 const char *name, *value;
1554 } configure_default_options[] = $configure_default_options;
1558 # Internationalization
1559 ZW_GNU_GETTEXT_SISTER_DIR
1561 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1562 # -liconv on the link line twice.
1563 case "$LIBINTL" in *$LIBICONV*)
1567 AC_ARG_ENABLE(secureplt,
1568 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1571 # Windows32 Registry support for specifying GCC installation paths.
1572 AC_ARG_ENABLE(win32-registry,
1573 [ --disable-win32-registry
1574 disable lookup of installation paths in the
1575 Registry on Windows hosts
1576 --enable-win32-registry enable registry lookup (default)
1577 --enable-win32-registry=KEY
1578 use KEY instead of GCC version as the last portion
1579 of the registry key],,)
1582 win32 | pe | cygwin* | mingw32* | uwin*)
1583 if test "x$enable_win32_registry" != xno; then
1584 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1587 if test "x$enable_win32_registry" != xno; then
1588 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1589 [Define to 1 if installation paths should be looked up in the Windows
1590 Registry. Ignored on non-Windows hosts.])
1592 if test "x$enable_win32_registry" != xyes \
1593 && test "x$enable_win32_registry" != x; then
1594 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1595 [Define to be the last component of the Windows registry key under which
1596 to look for installation paths. The full key used will be
1597 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1598 The default is the GCC version number.])
1604 # Get an absolute path to the GCC top-level source directory
1605 holddir=`${PWDCMD-pwd}`
1607 topdir=`${PWDCMD-pwd}`
1610 # Conditionalize the makefile for this host machine.
1612 for f in ${host_xmake_file}
1614 if test -f ${srcdir}/config/$f
1616 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1620 # Conditionalize the makefile for this target machine.
1622 for f in ${tmake_file}
1624 if test -f ${srcdir}/config/$f
1626 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1629 tmake_file="${tmake_file_}"
1631 # If the host doesn't support symlinks, modify CC in
1632 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1633 # Otherwise, we can use "CC=$(CC)".
1637 cc_set_by_configure="\$(CC)"
1638 quoted_cc_set_by_configure="\$(CC)"
1639 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1640 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1643 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1644 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1645 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1646 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1650 # This is a terrible hack which will go away some day.
1651 host_cc_for_libada=${CC}
1652 AC_SUBST(host_cc_for_libada)
1654 out_object_file=`basename $out_file .c`.o
1656 tm_file_list="options.h"
1657 tm_include_list="options.h"
1658 for f in $tm_file; do
1661 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1662 tm_include_list="${tm_include_list} $f"
1665 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1666 tm_include_list="${tm_include_list} config/$f"
1673 for f in $tm_p_file; do
1676 tm_p_file_list="${tm_p_file_list} $f"
1677 tm_p_include_list="${tm_p_include_list} $f"
1680 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1681 tm_p_include_list="${tm_p_include_list} config/$f"
1687 for f in $xm_file; do
1690 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1691 xm_include_list="${xm_include_list} $f"
1694 xm_file_list="${xm_file_list} $f"
1695 xm_include_list="${xm_include_list} $f"
1698 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1699 xm_include_list="${xm_include_list} config/$f"
1705 host_xm_include_list=
1706 for f in $host_xm_file; do
1709 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1710 host_xm_include_list="${host_xm_include_list} $f"
1713 host_xm_file_list="${host_xm_file_list} $f"
1714 host_xm_include_list="${host_xm_include_list} $f"
1717 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1718 host_xm_include_list="${host_xm_include_list} config/$f"
1724 for f in $build_xm_file; do
1727 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1728 build_xm_include_list="${build_xm_include_list} $f"
1730 auto-build.h | auto-host.h )
1731 build_xm_file_list="${build_xm_file_list} $f"
1732 build_xm_include_list="${build_xm_include_list} $f"
1735 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1736 build_xm_include_list="${build_xm_include_list} config/$f"
1741 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1742 # cross-compiler which does not use the native headers and libraries.
1743 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1744 CROSS= AC_SUBST(CROSS)
1745 ALL=all.internal AC_SUBST(ALL)
1746 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1748 if test "x$with_build_sysroot" != x; then
1749 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1751 # This value is used, even on a native system, because
1752 # CROSS_SYSTEM_HEADER_DIR is just
1753 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1754 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1757 if test x$host != x$target
1759 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1761 SYSTEM_HEADER_DIR=$build_system_header_dir
1762 case "$host","$target" in
1763 # Darwin crosses can use the host system's libraries and headers,
1764 # because of the fat library support. Of course, it must be the
1765 # same version of Darwin on both sides. Allow the user to
1766 # just say --target=foo-darwin without a version number to mean
1767 # "the version on this system".
1768 *-*-darwin*,*-*-darwin*)
1769 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1770 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1771 if test $hostos = $targetos -o $targetos = darwin ; then
1773 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1778 i?86-*-*,x86_64-*-* \
1779 | powerpc*-*-*,powerpc64*-*-*)
1780 CROSS="$CROSS -DNATIVE_CROSS" ;;
1782 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1783 SYSTEM_HEADER_DIR=$build_system_header_dir
1786 # If this is a cross-compiler that does not
1787 # have its own set of headers then define
1790 # If this is using newlib, without having the headers available now,
1791 # then define inhibit_libc in LIBGCC2_CFLAGS.
1792 # This prevents libgcc2 from containing any code which requires libc
1795 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1796 test x$with_newlib = xyes ; } &&
1797 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1800 AC_SUBST(inhibit_libc)
1802 # When building gcc with a cross-compiler, we need to adjust things so
1803 # that the generator programs are still built with the native compiler.
1804 # Also, we cannot run fixincludes or fix-header.
1806 # These are the normal (build=host) settings:
1807 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1808 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1809 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1811 # Possibly disable fixproto, on a per-target basis.
1812 case ${use_fixproto} in
1817 STMP_FIXPROTO=stmp-fixproto
1820 AC_SUBST(STMP_FIXPROTO)
1822 # And these apply if build != host, or we are generating coverage data
1823 if test x$build != x$host || test "x$coverage_flags" != x
1825 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1827 if test "x$TARGET_SYSTEM_ROOT" = x; then
1828 if test "x$STMP_FIXPROTO" != x; then
1829 STMP_FIXPROTO=stmp-install-fixproto
1834 # Expand extra_headers to include complete path.
1835 # This substitutes for lots of t-* files.
1837 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1838 for file in ${extra_headers} ; do
1839 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1842 # Define collect2 in Makefile.
1843 case $host_can_use_collect2 in
1845 *) collect2='collect2$(exeext)' ;;
1847 AC_SUBST([collect2])
1849 # Add a definition of USE_COLLECT2 if system wants one.
1850 case $use_collect2 in
1851 no) use_collect2= ;;
1854 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1855 xm_defines="${xm_defines} USE_COLLECT2"
1856 case $host_can_use_collect2 in
1858 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1864 # ---------------------------
1865 # Assembler & linker features
1866 # ---------------------------
1868 # Identify the assembler which will work hand-in-glove with the newly
1869 # built GCC, so that we can examine its features. This is the assembler
1870 # which will be driven by the driver program.
1872 # If build != host, and we aren't building gas in-tree, we identify a
1873 # build->target assembler and hope that it will have the same features
1874 # as the host->target assembler we'll be using.
1875 gcc_cv_gas_major_version=
1876 gcc_cv_gas_minor_version=
1877 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1879 m4_pattern_allow([AS_FOR_TARGET])dnl
1880 AS_VAR_SET_IF(gcc_cv_as,, [
1881 if test -x "$DEFAULT_ASSEMBLER"; then
1882 gcc_cv_as="$DEFAULT_ASSEMBLER"
1883 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1884 && test -f ../gas/Makefile \
1885 && test x$build = x$host; then
1886 gcc_cv_as=../gas/as-new$build_exeext
1887 elif test -x as$build_exeext; then
1888 # Build using assembler in the current directory.
1889 gcc_cv_as=./as$build_exeext
1890 elif test -x $AS_FOR_TARGET; then
1891 gcc_cv_as="$AS_FOR_TARGET"
1893 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1896 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1897 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1899 AC_MSG_CHECKING(what assembler to use)
1900 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1901 # Single tree build which includes gas. We want to prefer it
1902 # over whatever linker top-level may have detected, since
1903 # we'll use what we're building after installation anyway.
1904 AC_MSG_RESULT(newly built gas)
1906 _gcc_COMPUTE_GAS_VERSION
1907 in_tree_gas_is_elf=no
1908 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1909 || (grep 'obj_format = multi' ../gas/Makefile \
1910 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1912 in_tree_gas_is_elf=yes
1915 AC_MSG_RESULT($gcc_cv_as)
1919 # Identify the linker which will work hand-in-glove with the newly
1920 # built GCC, so that we can examine its features. This is the linker
1921 # which will be driven by the driver program.
1923 # If build != host, and we aren't building gas in-tree, we identify a
1924 # build->target linker and hope that it will have the same features
1925 # as the host->target linker we'll be using.
1926 gcc_cv_gld_major_version=
1927 gcc_cv_gld_minor_version=
1928 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1929 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1931 AS_VAR_SET_IF(gcc_cv_ld,, [
1932 if test -x "$DEFAULT_LINKER"; then
1933 gcc_cv_ld="$DEFAULT_LINKER"
1934 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1935 && test -f ../ld/Makefile \
1936 && test x$build = x$host; then
1937 gcc_cv_ld=../ld/ld-new$build_exeext
1938 elif test -x collect-ld$build_exeext; then
1939 # Build using linker in the current directory.
1940 gcc_cv_ld=./collect-ld$build_exeext
1941 elif test -x $LD_FOR_TARGET; then
1942 gcc_cv_ld="$LD_FOR_TARGET"
1944 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1947 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1948 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1950 AC_MSG_CHECKING(what linker to use)
1951 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1952 # Single tree build which includes ld. We want to prefer it
1953 # over whatever linker top-level may have detected, since
1954 # we'll use what we're building after installation anyway.
1955 AC_MSG_RESULT(newly built ld)
1957 in_tree_ld_is_elf=no
1958 if (grep 'EMUL = .*elf' ../ld/Makefile \
1959 || grep 'EMUL = .*linux' ../ld/Makefile \
1960 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1961 in_tree_ld_is_elf=yes
1963 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
1966 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1967 if test x$gcc_cv_gld_version != x; then
1971 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1972 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1975 AC_MSG_RESULT($gcc_cv_ld)
1979 # Figure out what nm we will be using.
1980 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1981 AS_VAR_SET_IF(gcc_cv_nm,, [
1982 if test -f $gcc_cv_binutils_srcdir/configure.in \
1983 && test -f ../binutils/Makefile \
1984 && test x$build = x$host; then
1985 gcc_cv_nm=../binutils/nm-new$build_exeext
1986 elif test -x nm$build_exeext; then
1987 gcc_cv_nm=./nm$build_exeext
1988 elif test -x $NM_FOR_TARGET; then
1989 gcc_cv_nm="$NM_FOR_TARGET"
1991 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1994 AC_MSG_CHECKING(what nm to use)
1995 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1996 # Single tree build which includes binutils.
1997 AC_MSG_RESULT(newly built nm)
2000 AC_MSG_RESULT($gcc_cv_nm)
2004 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2005 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2007 # Figure out what objdump we will be using.
2008 AS_VAR_SET_IF(gcc_cv_objdump,, [
2009 if test -f $gcc_cv_binutils_srcdir/configure.in \
2010 && test -f ../binutils/Makefile \
2011 && test x$build = x$host; then
2012 # Single tree build which includes binutils.
2013 gcc_cv_objdump=../binutils/objdump$build_exeext
2014 elif test -x objdump$build_exeext; then
2015 gcc_cv_objdump=./objdump$build_exeext
2016 elif test -x $OBJDUMP_FOR_TARGET; then
2017 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2019 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2022 AC_MSG_CHECKING(what objdump to use)
2023 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2024 # Single tree build which includes binutils.
2025 AC_MSG_RESULT(newly built objdump)
2026 elif test x$gcc_cv_objdump = x; then
2027 AC_MSG_RESULT(not found)
2029 AC_MSG_RESULT($gcc_cv_objdump)
2032 # Figure out what assembler alignment features are present.
2033 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2037 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2038 [Define if your assembler supports .balign and .p2align.])])
2040 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2043 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2044 [Define if your assembler supports specifying the maximum number
2045 of bytes to skip when using the GAS .p2align command.])])
2047 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2050 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2051 [Define if your assembler supports .literal16.])])
2053 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2055 [conftest_label1: .word 0
2057 conftest_label2: .word 0
2059 [if test x$gcc_cv_nm != x; then
2060 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2061 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2062 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2064 else gcc_cv_as_subsection_m1=yes
2066 rm -f conftest.nm1 conftest.nm2
2068 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2069 [Define if your assembler supports .subsection and .subsection -1 starts
2070 emitting at the beginning of your section.])])
2072 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2075 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2077 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2079 [ .weakref foobar, barfnot],,
2080 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2082 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2085 .NSUBSPA $CODE$,COMDAT],,
2086 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2088 # .hidden needs to be supported in both the assembler and the linker,
2089 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2090 # This is irritatingly difficult to feature test for; we have to check the
2091 # date string after the version number. If we've got an in-tree
2092 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2094 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2095 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2100 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2101 [if test $in_tree_ld = yes ; then
2103 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2104 && test $in_tree_ld_is_elf = yes; then
2105 gcc_cv_ld_hidden=yes
2108 gcc_cv_ld_hidden=yes
2109 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2110 if echo "$ld_ver" | grep GNU > /dev/null; then
2112 ld_vers=`echo $ld_ver | sed -n \
2113 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2114 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2115 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2116 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2117 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2118 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2119 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2120 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2121 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2122 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2123 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2124 if test 0"$ld_date" -lt 20020404; then
2125 if test -n "$ld_date"; then
2126 # If there was date string, but was earlier than 2002-04-04, fail
2128 elif test -z "$ld_vers"; then
2129 # If there was no date string nor ld version number, something is wrong
2132 test -z "$ld_vers_patch" && ld_vers_patch=0
2133 if test "$ld_vers_major" -lt 2; then
2135 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2136 gcc_cv_ld_hidden="no"
2137 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2145 hppa64*-*-hpux* | ia64*-*-hpux*)
2146 gcc_cv_ld_hidden=yes
2154 libgcc_visibility=no
2155 AC_SUBST(libgcc_visibility)
2156 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2157 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2158 libgcc_visibility=yes
2159 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2160 [Define if your assembler and linker support .hidden.])
2163 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2164 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2172 [# GAS versions before 2.11 do not support uleb128,
2173 # despite appearing to.
2174 # ??? There exists an elf-specific test that will crash
2175 # the assembler. Perhaps it's better to figure out whether
2176 # arbitrary sections are supported and try the test.
2177 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2178 if echo "$as_ver" | grep GNU > /dev/null; then
2180 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2181 as_major=`echo $as_ver | sed 's/\..*//'`
2182 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2184 if test $as_major -eq 2 && test $as_minor -lt 11
2186 else gcc_cv_as_leb128=yes
2189 [AC_DEFINE(HAVE_AS_LEB128, 1,
2190 [Define if your assembler supports .sleb128 and .uleb128.])])
2192 # GAS versions up to and including 2.11.0 may mis-optimize
2194 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2202 .section .eh_frame,"aw",@progbits
2204 .4byte .LECIE1-.LSCIE1
2218 .4byte .LEFDE1-.LASFDE1
2220 .4byte .LASFDE1-__FRAME_BEGIN__
2228 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2229 cat > conftest.lit <<EOF
2230 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2231 0010 01000000 12000000 18000000 00000000 ................
2232 0020 08000000 04080000 0044 .........D @&t@
2234 cat > conftest.big <<EOF
2235 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2236 0010 00000001 00000012 00000018 00000000 ................
2237 0020 00000008 04000000 0844 .........D @&t@
2239 # If the assembler didn't choke, and we can objdump,
2240 # and we got the correct data, then succeed.
2241 # The text in the here-document typically retains its unix-style line
2242 # endings, while the output of objdump will use host line endings.
2243 # Therefore, use diff -b for the comparisons.
2244 if test x$gcc_cv_objdump != x \
2245 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2246 | tail -3 > conftest.got \
2247 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2248 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2250 gcc_cv_as_eh_frame=yes
2251 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2252 gcc_cv_as_eh_frame=buggy
2254 # Uh oh, what do we do now?
2255 gcc_cv_as_eh_frame=no
2258 if test $gcc_cv_as_eh_frame = buggy; then
2259 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2260 [Define if your assembler mis-optimizes .eh_frame data.])
2263 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2264 [elf,2,12,0], [--fatal-warnings],
2265 [.section .rodata.str, "aMS", @progbits, 1])
2266 if test $gcc_cv_as_shf_merge = no; then
2267 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2268 [elf,2,12,0], [--fatal-warnings],
2269 [.section .rodata.str, "aMS", %progbits, 1])
2271 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2272 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2273 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2275 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2276 [elf,2,16,0], [--fatal-warnings],
2277 [.section .text,"axG",@progbits,.foo,comdat])
2278 if test $gcc_cv_as_comdat_group = yes; then
2279 gcc_cv_as_comdat_group_percent=no
2281 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2282 [elf,2,16,0], [--fatal-warnings],
2283 [.section .text,"axG",%progbits,.foo,comdat])
2285 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2287 if test 0"$ld_date" -lt 20050308; then
2288 if test -n "$ld_date"; then
2289 # If there was date string, but was earlier than 2005-03-08, fail
2291 elif test "$ld_vers_major" -lt 2; then
2293 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2298 # assume linkers other than GNU ld don't support COMDAT group
2301 if test $comdat_group = no; then
2302 gcc_cv_as_comdat_group=no
2303 gcc_cv_as_comdat_group_percent=no
2305 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2306 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2307 [Define 0/1 if your assembler and linker support COMDAT groups.])
2309 # Thread-local storage - the check is heavily parametrized.
2318 .section ".tdata","awT",@progbits
2321 ldq $27,__tls_get_addr($29) !literal!1
2322 lda $16,foo($29) !tlsgd!1
2323 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2324 ldq $27,__tls_get_addr($29) !literal!2
2325 lda $16,foo($29) !tlsldm!2
2326 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2327 ldq $1,foo($29) !gotdtprel
2328 ldah $2,foo($29) !dtprelhi
2329 lda $3,foo($2) !dtprello
2330 lda $4,foo($29) !dtprel
2331 ldq $1,foo($29) !gottprel
2332 ldah $2,foo($29) !tprelhi
2333 lda $3,foo($2) !tprello
2334 lda $4,foo($29) !tprel'
2337 tls_as_opt=--fatal-warnings
2341 .section ".tdata","awT",@progbits
2353 .section ".tdata","awT",@progbits
2357 addil LT%foo-$tls_gdidx$,gp
2358 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2361 addil LT%foo-$tls_ldidx$,gp
2363 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2364 addil LR%foo-$tls_dtpoff$,%ret0
2365 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2367 addil LT%foo-$tls_ieoff$,gp
2368 ldw RT%foo-$tls_ieoff$(%r1),%t2
2371 addil LR%foo-$tls_leoff$,%t1
2372 ldo RR%foo-$tls_leoff$(%r1),%t2'
2375 tls_as_opt=--fatal-warnings
2379 .section ".tdata","awT",%progbits
2392 .section ".tdata","awT",@progbits
2396 leal foo@TLSGD(,%ebx,1), %eax
2397 leal foo@TLSLDM(%ebx), %eax
2398 leal foo@DTPOFF(%eax), %edx
2399 movl foo@GOTTPOFF(%ebx), %eax
2400 subl foo@GOTTPOFF(%ebx), %eax
2401 addl foo@GOTNTPOFF(%ebx), %eax
2402 movl foo@INDNTPOFF, %eax
2403 movl $foo@TPOFF, %eax
2404 subl $foo@TPOFF, %eax
2405 leal foo@NTPOFF(%ecx), %eax'
2408 tls_as_opt=--fatal-warnings
2412 .section ".tdata","awT",@progbits
2416 leaq foo@TLSGD(%rip), %rdi
2417 leaq foo@TLSLD(%rip), %rdi
2418 leaq foo@DTPOFF(%rax), %rdx
2419 movq foo@GOTTPOFF(%rip), %rax
2420 movq $foo@TPOFF, %rax'
2423 tls_as_opt=--fatal-warnings
2427 .section ".tdata","awT",@progbits
2430 addl r16 = @ltoff(@dtpmod(foo#)), gp
2431 addl r17 = @ltoff(@dtprel(foo#)), gp
2432 addl r18 = @ltoff(@tprel(foo#)), gp
2433 addl r19 = @dtprel(foo#), gp
2434 adds r21 = @dtprel(foo#), r13
2435 movl r23 = @dtprel(foo#)
2436 addl r20 = @tprel(foo#), gp
2437 adds r22 = @tprel(foo#), r13
2438 movl r24 = @tprel(foo#)'
2441 tls_as_opt=--fatal-warnings
2445 .section .tdata,"awT",@progbits
2449 addiu $4, $28, %tlsgd(x)
2450 addiu $4, $28, %tlsldm(x)
2451 lui $4, %dtprel_hi(x)
2452 addiu $4, $4, %dtprel_lo(x)
2453 lw $4, %gottprel(x)($28)
2454 lui $4, %tprel_hi(x)
2455 addiu $4, $4, %tprel_lo(x)'
2458 tls_as_opt='-32 --fatal-warnings'
2462 .section ".tdata","awT",@progbits
2470 addi 3,31,ld0@got@tlsgd
2472 addi 3,31,x1@got@tlsld
2475 addis 9,3,x2@dtprel@ha
2476 addi 9,9,x2@dtprel@l
2477 lwz 9,x3@got@tprel(31)
2480 addis 9,2,x2@tprel@ha
2481 addi 9,9,x2@tprel@l'
2484 tls_as_opt="-a32 --fatal-warnings"
2488 .section ".tdata","awT",@progbits
2496 addi 3,2,ld0@got@tlsgd
2502 addi 3,2,x1@got@tlsld
2508 addis 9,3,x2@dtprel@ha
2509 addi 9,9,x2@dtprel@l
2512 ld 9,x3@got@dtprel(2)
2518 tls_as_opt="-a64 --fatal-warnings"
2522 .section ".tdata","awT",@progbits
2531 l %r1,foo@GOTNTPOFF(%r12)
2532 l %r1,0(%r1):tls_load:foo
2533 bas %r14,0(%r1,%r13):tls_gdcall:foo
2534 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2537 tls_as_opt="-m31 --fatal-warnings"
2541 .section ".tdata","awT",@progbits
2549 lg %r1,foo@GOTNTPOFF(%r12)
2550 larl %r1,foo@INDNTPOFF
2551 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2552 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2555 tls_as_opt="-m64 -Aesame --fatal-warnings"
2557 sh-*-* | sh[34]-*-*)
2559 .section ".tdata","awT",@progbits
2569 tls_as_opt=--fatal-warnings
2573 sparc*-sun-solaris2.[56789]*)
2574 # TLS was introduced in the Solaris 9 4/04 release but
2575 # we do not enable it by default on Solaris 9 either.
2576 if test "x$enable_tls" = xyes ; then
2582 sparc*-sun-solaris2.*)
2589 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2591 .section ".tdata",#alloc,#write,#tls
2594 sethi %tgd_hi22(foo), %o0
2595 add %o0, %tgd_lo10(foo), %o1
2596 add %l7, %o1, %o0, %tgd_add(foo)
2597 call __tls_get_addr, %tgd_call(foo)
2598 sethi %tldm_hi22(foo), %l1
2599 add %l1, %tldm_lo10(foo), %l2
2600 add %l7, %l2, %o0, %tldm_add(foo)
2601 call __tls_get_addr, %tldm_call(foo)
2602 sethi %tldo_hix22(foo), %l3
2603 xor %l3, %tldo_lox10(foo), %l4
2604 add %o0, %l4, %l5, %tldo_add(foo)
2605 sethi %tie_hi22(foo), %o3
2606 add %o3, %tie_lo10(foo), %o3
2607 ld [%l7 + %o3], %o2, %tie_ld(foo)
2608 add %g7, %o2, %o4, %tie_add(foo)
2609 sethi %tle_hix22(foo), %l1
2610 xor %l1, %tle_lox10(foo), %o5
2611 ld [%g7 + %o5], %o1'
2616 .section ".tdata","awT",@progbits
2619 sethi %tgd_hi22(foo), %o0
2620 add %o0, %tgd_lo10(foo), %o1
2621 add %l7, %o1, %o0, %tgd_add(foo)
2622 call __tls_get_addr, %tgd_call(foo)
2623 sethi %tldm_hi22(foo), %l1
2624 add %l1, %tldm_lo10(foo), %l2
2625 add %l7, %l2, %o0, %tldm_add(foo)
2626 call __tls_get_addr, %tldm_call(foo)
2627 sethi %tldo_hix22(foo), %l3
2628 xor %l3, %tldo_lox10(foo), %l4
2629 add %o0, %l4, %l5, %tldo_add(foo)
2630 sethi %tie_hi22(foo), %o3
2631 add %o3, %tie_lo10(foo), %o3
2632 ld [%l7 + %o3], %o2, %tie_ld(foo)
2633 add %g7, %o2, %o4, %tie_add(foo)
2634 sethi %tle_hix22(foo), %l1
2635 xor %l1, %tle_lox10(foo), %o5
2636 ld [%g7 + %o5], %o1'
2639 tls_as_opt="-32 --fatal-warnings"
2645 if test "x$enable_tls" = xno ; then
2646 : # TLS explicitly disabled.
2647 elif test "x$enable_tls" = xyes ; then
2648 set_have_as_tls=yes # TLS explicitly enabled.
2649 elif test -z "$tls_first_major"; then
2650 : # If we don't have a check, assume no support.
2652 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2653 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2654 [set_have_as_tls=yes])
2656 if test $set_have_as_tls = yes ; then
2657 AC_DEFINE(HAVE_AS_TLS, 1,
2658 [Define if your assembler supports thread-local storage.])
2661 # Target-specific assembler checks.
2663 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2664 gcc_cv_ld_static_dynamic=no
2665 if test $in_tree_ld = yes ; then
2666 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2667 gcc_cv_ld_static_dynamic=yes
2669 elif test x$gcc_cv_ld != x; then
2670 # Check if linker supports -Bstatic/-Bdynamic option
2671 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2672 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2673 gcc_cv_ld_static_dynamic=yes
2676 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2677 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2678 [Define if your linker supports -Bstatic/-Bdynamic option.])
2680 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2682 if test x"$demangler_in_ld" = xyes; then
2683 AC_MSG_CHECKING(linker --demangle support)
2684 gcc_cv_ld_demangle=no
2685 if test $in_tree_ld = yes; then
2686 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2687 gcc_cv_ld_demangle=yes
2689 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2690 # Check if the GNU linker supports --demangle option
2691 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2692 gcc_cv_ld_demangle=yes
2695 if test x"$gcc_cv_ld_demangle" = xyes; then
2696 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2697 [Define if your linker supports --demangle option.])
2699 AC_MSG_RESULT($gcc_cv_ld_demangle)
2703 # All TARGET_ABI_OSF targets.
2704 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2705 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2706 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2709 extbl $3, $2, $3 !lituse_bytoff!1
2710 ldq $2, a($29) !literal!1
2711 ldq $4, b($29) !literal!2
2712 ldq_u $3, 0($2) !lituse_base!1
2713 ldq $27, f($29) !literal!5
2714 jsr $26, ($27), f !lituse_jsr!5
2715 ldah $29, 0($26) !gpdisp!3
2716 lda $0, c($29) !gprel
2717 ldah $1, d($29) !gprelhigh
2718 lda $1, d($1) !gprellow
2719 lda $29, 0($29) !gpdisp!3],,
2720 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2721 [Define if your assembler supports explicit relocations.])])
2722 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2723 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2726 ldq $27, a($29) !literal!1
2727 jsr $26, ($27), a !lituse_jsrdirect!1],,
2728 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2729 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2733 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2734 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2735 [-no-mul-bug-abort], [.text],,
2736 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2737 [Define if your assembler supports the -no-mul-bug-abort option.])])
2741 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2742 [.register %g2, #scratch],,
2743 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2744 [Define if your assembler supports .register.])])
2746 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2748 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2749 [Define if your assembler supports -relax option.])])
2751 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2752 gcc_cv_as_sparc_ua_pcrel,,
2760 .uaword %r_disp32(foo)],
2761 [if test x$gcc_cv_ld != x \
2762 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2763 gcc_cv_as_sparc_ua_pcrel=yes
2766 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2767 [Define if your assembler and linker support unaligned PC relative relocs.])
2769 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2770 gcc_cv_as_sparc_ua_pcrel_hidden,,
2775 .uaword %r_disp32(foo)
2776 .byte 0x32, 0x33, 0x34
2781 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2782 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2783 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2784 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2785 if $gcc_cv_objdump -R conftest 2> /dev/null \
2786 | grep 'DISP32' > /dev/null 2>&1; then
2789 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2793 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2794 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2795 ]) # unaligned pcrel relocs
2797 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2798 gcc_cv_as_sparc_offsetable_lo10,,
2801 or %g1, %lo(ab) + 12, %g1
2802 or %g1, %lo(ab + 12), %g1],
2803 [if test x$gcc_cv_objdump != x \
2804 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2805 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2806 gcc_cv_as_sparc_offsetable_lo10=yes
2808 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2809 [Define if your assembler supports offsetable %lo().])])
2813 i[34567]86-*-* | x86_64-*-*)
2816 cygwin* | pe | mingw32*)
2817 # Used for DWARF 2 in PE
2818 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2819 gcc_cv_as_ix86_pe_secrel32,
2825 [if test x$gcc_cv_ld != x \
2826 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2827 gcc_cv_as_ix86_pe_secrel32=yes
2830 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2831 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2835 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2836 gcc_cv_as_ix86_filds_fists,
2837 [2,9,0],, [filds mem; fists mem],,
2838 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2839 [Define if your assembler uses the new HImode fild and fist notation.])])
2841 gcc_GAS_CHECK_FEATURE([cmov syntax],
2842 gcc_cv_as_ix86_cmov_sun_syntax,,,
2843 [cmovl.l %edx, %eax],,
2844 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2845 [Define if your assembler supports the Sun syntax for cmov.])])
2847 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2848 gcc_cv_as_ix86_ffreep,,,
2850 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2851 [Define if your assembler supports the ffreep mnemonic.])])
2853 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2854 gcc_cv_as_ix86_diff_sect_delta,,,
2862 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2863 [Define if your assembler supports the subtraction of symbols in different sections.])])
2865 # This one is used unconditionally by i386.[ch]; it is to be defined
2866 # to 1 if the feature is present, 0 otherwise.
2867 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2868 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2874 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2875 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2876 [Define true if the assembler supports '.long foo@GOTOFF'.])
2880 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2881 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2883 addl r15 = @ltoffx(x#), gp
2885 ld8.mov r16 = [[r15]], x#],,
2886 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2887 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2893 *-*-aix*) conftest_s=' .machine "pwr5"
2897 gcc_GAS_CHECK_FEATURE([.machine directive support],
2898 gcc_cv_as_machine_directive,,,
2899 [ .machine ppc7400])
2900 if test x$gcc_cv_as_machine_directive != xyes; then
2901 echo "*** This target requires an assembler supporting \".machine\"" >&2
2902 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2903 test x$build = x$target && exit 1
2907 *) conftest_s=' .machine power4
2912 gcc_GAS_CHECK_FEATURE([mfcr field support],
2913 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2915 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2916 [Define if your assembler supports mfcr field.])])
2919 *-*-aix*) conftest_s=' .machine "pwr5"
2922 *) conftest_s=' .machine power5
2927 gcc_GAS_CHECK_FEATURE([popcntb support],
2928 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2930 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2931 [Define if your assembler supports popcntb field.])])
2934 *-*-aix*) conftest_s=' .machine "pwr5x"
2937 *) conftest_s=' .machine power5
2942 gcc_GAS_CHECK_FEATURE([fp round support],
2943 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2945 [AC_DEFINE(HAVE_AS_FPRND, 1,
2946 [Define if your assembler supports fprnd.])])
2949 *-*-aix*) conftest_s=' .machine "pwr6"
2952 *) conftest_s=' .machine power6
2957 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2958 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2960 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2961 [Define if your assembler supports mffgpr and mftgpr.])])
2964 *-*-aix*) conftest_s=' .csect .text[[PR]]
2966 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2970 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2971 *) conftest_s=' .text
2973 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2976 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2977 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2979 [AC_DEFINE(HAVE_AS_REL16, 1,
2980 [Define if your assembler supports R_PPC_REL16 relocs.])])
2984 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2985 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2986 [ lw $4,%gp_rel(foo)($4)],,
2987 [if test x$target_cpu_default = x
2988 then target_cpu_default=MASK_EXPLICIT_RELOCS
2989 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2991 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2992 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2993 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2994 [Define if the assembler understands -mno-shared.])])
2998 # Mips and HP-UX need the GNU assembler.
2999 # Linux on IA64 might be able to use the Intel assembler.
3002 mips*-*-* | *-*-hpux* )
3003 if test x$gas_flag = xyes \
3004 || test x"$host" != x"$build" \
3005 || test ! -x "$gcc_cv_as" \
3006 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3009 echo "*** This configuration requires the GNU assembler" >&2
3015 # ??? Not all targets support dwarf2 debug_line, even within a version
3016 # of gas. Moreover, we need to emit a valid instruction to trigger any
3017 # info to the output file. So, as supported targets are added to gas 2.11,
3018 # add some instruction here to (also) show we expect this might work.
3019 # ??? Once 2.11 is released, probably need to add first known working
3020 # version to the per-target configury.
3022 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3023 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3024 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-*)
3027 ia64*-*-* | s390*-*-*)
3034 if test x"$insn" != x; then
3036 .file 1 \"conftest.s\"
3039 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3040 gcc_cv_as_dwarf2_debug_line,
3041 [elf,2,11,0],, [$conftest_s],
3042 [if test x$gcc_cv_objdump != x \
3043 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3044 | grep debug_line > /dev/null 2>&1; then
3045 gcc_cv_as_dwarf2_debug_line=yes
3048 # The .debug_line file table must be in the exact order that
3049 # we specified the files, since these indices are also used
3050 # by DW_AT_decl_file. Approximate this test by testing if
3051 # the assembler bitches if the same index is assigned twice.
3052 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3053 gcc_cv_as_dwarf2_file_buggy,,,
3057 if test $gcc_cv_as_dwarf2_debug_line = yes \
3058 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3059 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3060 [Define if your assembler supports dwarf2 .file/.loc directives,
3061 and preserves file table indices exactly as given.])
3064 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3065 gcc_cv_as_gdwarf2_flag,
3066 [elf,2,11,0], [--gdwarf2], [$insn],,
3067 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3068 [Define if your assembler supports the --gdwarf2 option.])])
3070 gcc_GAS_CHECK_FEATURE([--gstabs option],
3071 gcc_cv_as_gstabs_flag,
3072 [elf,2,11,0], [--gstabs], [$insn],
3073 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3074 # and warns about it, but still exits successfully. So check for
3076 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3078 else gcc_cv_as_gstabs_flag=yes
3080 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3081 [Define if your assembler supports the --gstabs option.])])
3084 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3085 gcc_cv_ld_ro_rw_mix=unknown
3086 if test $in_tree_ld = yes ; then
3087 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3088 && test $in_tree_ld_is_elf = yes; then
3089 gcc_cv_ld_ro_rw_mix=read-write
3091 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3092 echo '.section myfoosect, "a"' > conftest1.s
3093 echo '.section myfoosect, "aw"' > conftest2.s
3094 echo '.byte 1' >> conftest2.s
3095 echo '.section myfoosect, "a"' > conftest3.s
3096 echo '.byte 0' >> conftest3.s
3097 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3098 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3099 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3100 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3101 conftest2.o conftest3.o > /dev/null 2>&1; then
3102 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3103 | sed -e '/myfoosect/!d' -e N`
3104 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3105 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3106 gcc_cv_ld_ro_rw_mix=read-only
3108 gcc_cv_ld_ro_rw_mix=read-write
3113 rm -f conftest.* conftest[123].*
3116 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3117 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3118 [Define if your linker links a mix of read-only
3119 and read-write sections into a read-write section.])
3121 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3123 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3124 gcc_cv_ld_eh_frame_hdr=no
3125 if test $in_tree_ld = yes ; then
3126 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3127 && test $in_tree_ld_is_elf = yes; then
3128 gcc_cv_ld_eh_frame_hdr=yes
3130 elif test x$gcc_cv_ld != x; then
3131 # Check if linker supports --eh-frame-hdr option
3132 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3133 gcc_cv_ld_eh_frame_hdr=yes
3136 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3137 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3138 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3139 [Define if your linker supports --eh-frame-hdr option.])
3141 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3143 AC_MSG_CHECKING(linker position independent executable support)
3145 if test $in_tree_ld = yes ; then
3146 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3147 && test $in_tree_ld_is_elf = yes; then
3150 elif test x$gcc_cv_ld != x; then
3151 # Check if linker supports -pie option
3152 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3156 if test x"$gcc_cv_ld_pie" = xyes; then
3157 AC_DEFINE(HAVE_LD_PIE, 1,
3158 [Define if your linker supports -pie option.])
3160 AC_MSG_RESULT($gcc_cv_ld_pie)
3162 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3163 gcc_cv_ld_eh_gc_sections=no
3164 if test $in_tree_ld = yes ; then
3165 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3166 && test $in_tree_ld_is_elf = yes; then
3167 gcc_cv_ld_eh_gc_sections=yes
3169 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3170 cat > conftest.s <<EOF
3173 .type _start, @function
3176 .size _start, .-_start
3177 .section .text.foo,"ax",@progbits
3178 .type foo, @function
3182 .section .gcc_except_table.foo,"a",@progbits
3185 .section .eh_frame,"a",@progbits
3188 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3189 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3190 | grep "gc-sections option ignored" > /dev/null; then
3191 gcc_cv_ld_eh_gc_sections=no
3192 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3193 gcc_cv_ld_eh_gc_sections=yes
3194 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3195 if test x$gcc_cv_as_comdat_group != xyes; then
3196 gcc_cv_ld_eh_gc_sections=no
3197 cat > conftest.s <<EOF
3200 .type _start, @function
3203 .size _start, .-_start
3204 .section .gnu.linkonce.t.foo,"ax",@progbits
3205 .type foo, @function
3209 .section .gcc_except_table.foo,"a",@progbits
3212 .section .eh_frame,"a",@progbits
3215 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3216 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3217 | grep "gc-sections option ignored" > /dev/null; then
3218 gcc_cv_ld_eh_gc_sections=no
3219 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3220 gcc_cv_ld_eh_gc_sections=yes
3226 rm -f conftest.s conftest.o conftest
3230 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3231 gcc_cv_ld_eh_gc_sections=no
3234 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3235 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3236 [Define if your linker supports garbage collection of
3237 sections in presence of EH frames.])
3239 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3245 AC_CACHE_CHECK(linker --as-needed support,
3246 gcc_cv_ld_as_needed,
3247 [gcc_cv_ld_as_needed=no
3248 if test $in_tree_ld = yes ; then
3249 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3250 && test $in_tree_ld_is_elf = yes; then
3251 gcc_cv_ld_as_needed=yes
3253 elif test x$gcc_cv_ld != x; then
3254 # Check if linker supports --as-needed and --no-as-needed options
3255 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3256 gcc_cv_ld_as_needed=yes
3260 if test x"$gcc_cv_ld_as_needed" = xyes; then
3261 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3262 [Define if your linker supports --as-needed and --no-as-needed options.])
3265 case "$target:$tm_file" in
3266 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3267 AC_CACHE_CHECK(linker support for omitting dot symbols,
3268 gcc_cv_ld_no_dot_syms,
3269 [gcc_cv_ld_no_dot_syms=no
3270 if test $in_tree_ld = yes ; then
3271 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3272 gcc_cv_ld_no_dot_syms=yes
3274 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3275 cat > conftest1.s <<EOF
3279 cat > conftest2.s <<EOF
3280 .section ".opd","aw"
3285 .quad .LEfoo,.TOC.@tocbase,0
3291 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3292 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3293 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3294 gcc_cv_ld_no_dot_syms=yes
3296 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3299 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3300 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3301 [Define if your PowerPC64 linker only needs function descriptor syms.])
3306 AC_CACHE_CHECK(linker --sysroot support,
3308 [gcc_cv_ld_sysroot=no
3309 if test $in_tree_ld = yes ; then
3310 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3311 gcc_cv_ld_sysroot=yes
3313 elif test x$gcc_cv_ld != x; then
3314 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3315 gcc_cv_ld_sysroot=yes
3318 if test x"$gcc_cv_ld_sysroot" = xyes; then
3319 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3320 [Define if your linker supports --sysroot.])
3323 if test x$with_sysroot = x && test x$host = x$target \
3324 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3325 && test "$prefix" != "NONE"; then
3326 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3327 [Define to PREFIX/include if cpp should also search that directory.])
3330 # Test for stack protector support in target C library.
3333 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3334 gcc_cv_libc_provides_ssp,
3335 [gcc_cv_libc_provides_ssp=no
3336 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3337 if test "x$with_sysroot" = x; then
3338 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3339 elif test "x$with_sysroot" = xyes; then
3340 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3342 glibc_header_dir="${with_sysroot}/usr/include"
3345 glibc_header_dir=/usr/include
3347 # glibc 2.4 and later provides __stack_chk_fail and
3348 # either __stack_chk_guard, or TLS access to stack guard canary.
3349 if test -f $glibc_header_dir/features.h \
3350 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3351 $glibc_header_dir/features.h > /dev/null; then
3352 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3353 $glibc_header_dir/features.h > /dev/null; then
3354 gcc_cv_libc_provides_ssp=yes
3355 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3356 $glibc_header_dir/features.h > /dev/null \
3357 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3358 $glibc_header_dir/features.h > /dev/null; then
3359 gcc_cv_libc_provides_ssp=yes
3362 *) gcc_cv_libc_provides_ssp=no ;;
3364 if test x$gcc_cv_libc_provides_ssp = xyes; then
3365 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3366 [Define if your target C library provides stack protector support])
3369 # Check if TFmode long double should be used by default or not.
3370 # Some glibc targets used DFmode long double, but with glibc 2.4
3371 # and later they can use TFmode.
3373 powerpc*-*-*gnu* | \
3377 AC_ARG_WITH(long-double-128,
3378 [ --with-long-double-128 Use 128-bit long double by default.],
3379 gcc_cv_target_ldbl128="$with_long_double_128",
3380 [gcc_cv_target_ldbl128=no
3381 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3382 if test "x$with_sysroot" = x; then
3383 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3384 elif test "x$with_sysroot" = xyes; then
3385 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3387 glibc_header_dir="${with_sysroot}/usr/include"
3390 glibc_header_dir=/usr/include
3393 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3394 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3395 && gcc_cv_target_ldbl128=yes
3400 if test x$gcc_cv_target_ldbl128 = xyes; then
3401 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3402 [Define if TFmode long double should be the default])
3405 # Find out what GC implementation we want, or may, use.
3407 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3415 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3418 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3423 echo "Using $GGC for garbage collection."
3425 # Use the system's zlib library.
3427 zlibinc="-I\$(srcdir)/../zlib"
3428 AC_ARG_WITH(system-zlib,
3429 [ --with-system-zlib use installed libz],
3436 dnl Very limited version of automake's enable-maintainer-mode
3438 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3439 dnl maintainer-mode is disabled by default
3440 AC_ARG_ENABLE(maintainer-mode,
3441 [ --enable-maintainer-mode
3442 enable make rules and dependencies not useful
3443 (and sometimes confusing) to the casual installer],
3444 maintainer_mode=$enableval,
3447 AC_MSG_RESULT($maintainer_mode)
3449 if test "$maintainer_mode" = "yes"; then
3460 # Make empty files to contain the specs and options for each language.
3461 # Then add #include lines to for a compiler that has specs and/or options.
3467 # These (without "all_") are set in each config-lang.in.
3468 # `language' must be a single word so is spelled singularly.
3473 all_outputs='Makefile gccbug mklibgcc libada-mk'
3474 # List of language makefile fragments.
3476 # List of language subdirectory makefiles. Deprecated.
3478 # Files for gengtype
3479 all_gtfiles="$target_gtfiles"
3480 # Files for gengtype with language
3481 all_gtfiles_files_langs=
3482 all_gtfiles_files_files=
3484 # These are the languages that are set in --enable-languages,
3485 # and are available in the GCC tree.
3486 all_selected_languages=
3488 # Add the language fragments.
3489 # Languages are added via two mechanisms. Some information must be
3490 # recorded in makefile variables, these are defined in config-lang.in.
3491 # We accumulate them and plug them into the main Makefile.
3492 # The other mechanism is a set of hooks for each of the main targets
3493 # like `clean', `install', etc.
3495 language_hooks="Make-hooks"
3497 for lang in ${srcdir}/*/config-lang.in
3500 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3502 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3503 if test "x$lang_alias" = x
3505 echo "$lang doesn't set \$language." 1>&2
3508 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3509 subdirs="$subdirs $subdir"
3510 case ",$enable_languages," in
3512 all_selected_languages="$all_selected_languages $lang_alias"
3513 if test -f $srcdir/$subdir/lang-specs.h; then
3514 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3527 . ${srcdir}/$subdir/config-lang.in
3528 if test "x$language" = x
3530 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3535 case ",$enable_languages," in
3538 for i in $subdir_requires; do
3539 test -f "${srcdir}/$i/config-lang.in" && continue
3547 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3548 if test -f $srcdir/$subdir/lang.opt; then
3549 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3551 if test -f $srcdir/$subdir/$subdir-tree.def; then
3552 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3554 if test -f ${srcdir}/$subdir/Makefile.in
3555 then all_lang_makefiles="$subdir/Makefile"
3557 all_languages="$all_languages $language"
3558 if test "x$boot_language" = xyes
3560 all_boot_languages="$all_boot_languages $language"
3562 all_compilers="$all_compilers $compilers"
3563 all_stagestuff="$all_stagestuff $stagestuff"
3564 all_outputs="$all_outputs $outputs"
3565 all_gtfiles="$all_gtfiles $gtfiles"
3568 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3569 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3573 # Pick up gtfiles for c
3576 . ${srcdir}/c-config-lang.in
3577 all_gtfiles="$all_gtfiles $gtfiles"
3580 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3581 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3585 for language in $all_selected_languages
3587 check_languages="$check_languages check-$language"
3590 # We link each language in with a set of hooks, reached indirectly via
3591 # lang.${target}. Only do so for selected languages.
3595 target_list="all.cross start.encap rest.encap tags \
3596 install-common install-man install-info dvi pdf html \
3597 uninstall info man srcextra srcman srcinfo \
3598 mostlyclean clean distclean maintainer-clean \
3599 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3601 for t in $target_list
3604 for lang in $all_selected_languages
3608 echo "lang.$t: $x" >> Make-hooks
3617 echo "dir ." > .gdbinit
3618 echo "dir ${srcdir}" >> .gdbinit
3619 if test x$gdb_needs_out_file_path = xyes
3621 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3623 if test "x$subdirs" != x; then
3626 echo "dir ${srcdir}/$s" >> .gdbinit
3629 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3631 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3632 # absolute path for gcc_tooldir based on inserting the number of up-directory
3633 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3634 # $(libsubdir)/@(unlibsubdir) based path.
3635 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3636 # make and thus we'd get different behavior depending on where we built the
3638 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3639 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3641 changequote(<<, >>)dnl
3642 # An explanation of the sed strings:
3643 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3644 # -e 's|/$||' match a trailing forward slash and eliminates it
3645 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3646 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3648 # (*) Note this pattern overwrites the first character of the string
3649 # with a forward slash if one is not already present. This is not a
3650 # problem because the exact names of the sub-directories concerned is
3651 # unimportant, just the number of them matters.
3653 # The practical upshot of these patterns is like this:
3655 # prefix exec_prefix result
3656 # ------ ----------- ------
3658 # /foo/ /foo/bar ../
3659 # /foo /foo/bar/ ../
3660 # /foo/ /foo/bar/ ../
3661 # /foo /foo/bar/ugg ../../
3664 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3665 changequote([, ])dnl
3667 AC_SUBST(gcc_tooldir)
3670 # Find a directory in which to install a shared libgcc.
3672 AC_ARG_ENABLE(version-specific-runtime-libs,
3673 [ --enable-version-specific-runtime-libs
3674 specify that runtime libraries should be
3675 installed in a compiler-specific directory])
3677 AC_ARG_WITH(slibdir,
3678 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3679 slibdir="$with_slibdir",
3680 if test "${enable_version_specific_runtime_libs+set}" = set; then
3681 slibdir='$(libsubdir)'
3682 elif test "$host" != "$target"; then
3683 slibdir='$(build_tooldir)/lib'
3689 objdir=`${PWDCMD-pwd}`
3692 AC_ARG_WITH(datarootdir,
3693 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3694 datarootdir="\${prefix}/$with_datarootdir",
3695 datarootdir='$(prefix)/share')
3696 AC_SUBST(datarootdir)
3699 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3700 docdir="\${prefix}/$with_docdir",
3701 docdir='$(datarootdir)')
3704 AC_ARG_WITH(htmldir,
3705 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3706 htmldir="\${prefix}/$with_htmldir",
3707 htmldir='$(docdir)')
3710 # Substitute configuration variables
3713 AC_SUBST(all_boot_languages)
3714 AC_SUBST(all_compilers)
3715 AC_SUBST(all_gtfiles)
3716 AC_SUBST(all_gtfiles_files_langs)
3717 AC_SUBST(all_gtfiles_files_files)
3718 AC_SUBST(all_lang_makefrags)
3719 AC_SUBST(all_lang_makefiles)
3720 AC_SUBST(all_languages)
3721 AC_SUBST(all_selected_languages)
3722 AC_SUBST(all_stagestuff)
3723 AC_SUBST(build_exeext)
3724 AC_SUBST(build_install_headers_dir)
3725 AC_SUBST(build_xm_file_list)
3726 AC_SUBST(build_xm_include_list)
3727 AC_SUBST(build_xm_defines)
3728 AC_SUBST(check_languages)
3729 AC_SUBST(cc_set_by_configure)
3730 AC_SUBST(quoted_cc_set_by_configure)
3731 AC_SUBST(cpp_install_dir)
3732 AC_SUBST(xmake_file)
3733 AC_SUBST(tmake_file)
3734 AC_SUBST(extra_gcc_objs)
3735 AC_SUBST(extra_headers_list)
3736 AC_SUBST(extra_objs)
3737 AC_SUBST(extra_parts)
3738 AC_SUBST(extra_passes)
3739 AC_SUBST(extra_programs)
3740 AC_SUBST(float_h_file)
3741 AC_SUBST(gcc_config_arguments)
3742 AC_SUBST(gcc_gxx_include_dir)
3743 AC_SUBST(host_exeext)
3744 AC_SUBST(host_xm_file_list)
3745 AC_SUBST(host_xm_include_list)
3746 AC_SUBST(host_xm_defines)
3747 AC_SUBST(out_host_hook_obj)
3749 AC_SUBST(lang_opt_files)
3750 AC_SUBST(lang_specs_files)
3751 AC_SUBST(lang_tree_files)
3752 AC_SUBST(local_prefix)
3754 AC_SUBST(objc_boehm_gc)
3756 AC_SUBST(out_object_file)
3757 AC_SUBST(stage_prefix_set_by_configure)
3758 AC_SUBST(quoted_stage_prefix_set_by_configure)
3759 AC_SUBST(thread_file)
3760 AC_SUBST(tm_file_list)
3761 AC_SUBST(tm_include_list)
3762 AC_SUBST(tm_defines)
3763 AC_SUBST(tm_p_file_list)
3764 AC_SUBST(tm_p_include_list)
3765 AC_SUBST(xm_file_list)
3766 AC_SUBST(xm_include_list)
3767 AC_SUBST(xm_defines)
3768 AC_SUBST(c_target_objs)
3769 AC_SUBST(cxx_target_objs)
3770 AC_SUBST(target_cpu_default)
3772 AC_SUBST_FILE(language_hooks)
3775 if test x${build} = x${host} ; then
3776 if test x${host} = x${target} ; then
3777 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3779 echo "Links are now set up to build a cross-compiler" 1>&2
3780 echo " from ${host} to ${target}." 1>&2
3783 if test x${host} = x${target} ; then
3784 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3785 echo " for ${target}." 1>&2
3787 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3788 echo " from ${host} to ${target}." 1>&2
3792 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3793 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3795 # Configure the subdirectories
3796 # AC_CONFIG_SUBDIRS($subdirs)
3798 # Create the Makefile
3799 # and configure language subdirectories
3800 AC_CONFIG_FILES($all_outputs)
3802 AC_CONFIG_COMMANDS([default],
3804 case ${CONFIG_HEADERS} in
3805 *auto-host.h:config.in*)
3808 # Make sure all the subdirs exist.
3809 for d in $subdirs doc build
3811 test -d $d || mkdir $d
3813 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3814 # bootstrapping and the installation procedure can still use
3815 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3816 # FLAGS_TO_PASS has been modified to solve the problem there.
3817 # This is virtually a duplicate of what happens in configure.lang; we do
3818 # an extra check to make sure this only happens if ln -s can be used.
3821 for d in ${subdirs} ; do
3822 STARTDIR=`${PWDCMD-pwd}`
3824 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3827 $LN_S ../$t $t 2>/dev/null
3834 [subdirs='$subdirs'])