2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 # Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, 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 COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${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 $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
319 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
320 -Wmissing-prototypes], [loose_warn])
321 ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
322 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
323 -Wmissing-format-attribute], [strict_warn])
324 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
325 -Wno-overlength-strings], [strict_warn])
326 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
328 # The above macros do nothing if the compiler is not GCC. However, the
329 # Makefile has more goo to add other flags, so this variabl is used to
330 # enables warnings only for GCC.
332 if test "x$GCC" = "xyes"; then
333 warn_cflags='$(GCC_WARN_CFLAGS)'
335 AC_SUBST(warn_cflags)
337 # Enable expensive internal checks
339 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
343 AC_ARG_ENABLE(checking,
344 [ --enable-checking[=LIST]
345 enable expensive run-time checks. With LIST,
346 enable only specific categories of checks.
347 Categories are: yes,no,all,none,release.
348 Flags are: assert,df,fold,gc,gcac,misc,
349 rtlflag,rtl,runtime,tree,valgrind,types.],
350 [ac_checking_flags="${enableval}"],[
351 # Determine the default checks.
352 if test x$is_release = x ; then
353 ac_checking_flags=yes
355 ac_checking_flags=release
357 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
358 for check in release $ac_checking_flags
361 # these set all the flags to specific states
362 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
363 ac_fold_checking= ; ac_gc_checking=1 ;
364 ac_gc_always_collect= ; ac_rtl_checking= ;
365 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
366 ac_tree_checking=1 ; ac_valgrind_checking= ;
367 ac_types_checking= ;;
368 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
369 ac_fold_checking= ; ac_gc_checking= ;
370 ac_gc_always_collect= ; ac_rtl_checking= ;
371 ac_rtlflag_checking= ; ac_runtime_checking= ;
372 ac_tree_checking= ; ac_valgrind_checking= ;
373 ac_types_checking= ;;
374 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
375 ac_fold_checking=1 ; ac_gc_checking=1 ;
376 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
377 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
378 ac_tree_checking=1 ; ac_valgrind_checking= ;
379 ac_types_checking=1 ;;
380 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
381 ac_fold_checking= ; ac_gc_checking= ;
382 ac_gc_always_collect= ; ac_rtl_checking= ;
383 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
384 ac_tree_checking= ; ac_valgrind_checking= ;
385 ac_types_checking= ;;
386 # these enable particular checks
387 assert) ac_assert_checking=1 ;;
388 df) ac_df_checking=1 ;;
389 fold) ac_fold_checking=1 ;;
390 gc) ac_gc_checking=1 ;;
391 gcac) ac_gc_always_collect=1 ;;
392 misc) ac_checking=1 ;;
393 rtl) ac_rtl_checking=1 ;;
394 rtlflag) ac_rtlflag_checking=1 ;;
395 runtime) ac_runtime_checking=1 ;;
396 tree) ac_tree_checking=1 ;;
397 types) ac_types_checking=1 ;;
398 valgrind) ac_valgrind_checking=1 ;;
399 *) AC_MSG_ERROR(unknown check category $check) ;;
405 if test x$ac_checking != x ; then
406 AC_DEFINE(ENABLE_CHECKING, 1,
407 [Define if you want more run-time sanity checks. This one gets a grab
408 bag of miscellaneous but relatively cheap checks.])
409 nocommon_flag=-fno-common
411 AC_SUBST(nocommon_flag)
412 if test x$ac_df_checking != x ; then
413 AC_DEFINE(ENABLE_DF_CHECKING, 1,
414 [Define if you want more run-time sanity checks for dataflow.])
416 if test x$ac_assert_checking != x ; then
417 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
418 [Define if you want assertions enabled. This is a cheap check.])
420 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
421 if test x$ac_runtime_checking != x ; then
422 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
423 [Define if you want runtime assertions enabled. This is a cheap check.])
425 if test x$ac_tree_checking != x ; then
426 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
427 [Define if you want all operations on trees (the basic data
428 structure of the front ends) to be checked for dynamic type safety
429 at runtime. This is moderately expensive. The tree browser debugging
430 routines will also be enabled by this option.
432 TREEBROWSER=tree-browser.o
434 if test x$ac_types_checking != x ; then
435 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
436 [Define if you want all gimple types to be verified after gimplifiation.
440 AC_SUBST(TREEBROWSER)
441 if test x$ac_rtl_checking != x ; then
442 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
443 [Define if you want all operations on RTL (the basic data structure
444 of the optimizer and back end) to be checked for dynamic type safety
445 at runtime. This is quite expensive.])
447 if test x$ac_rtlflag_checking != x ; then
448 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
449 [Define if you want RTL flag accesses to be checked against the RTL
450 codes that are supported for each access macro. This is relatively
453 if test x$ac_gc_checking != x ; then
454 AC_DEFINE(ENABLE_GC_CHECKING, 1,
455 [Define if you want the garbage collector to do object poisoning and
456 other memory allocation checks. This is quite expensive.])
458 if test x$ac_gc_always_collect != x ; then
459 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
460 [Define if you want the garbage collector to operate in maximally
461 paranoid mode, validating the entire heap and collecting garbage at
462 every opportunity. This is extremely expensive.])
464 if test x$ac_fold_checking != x ; then
465 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
466 [Define if you want fold checked that it never destructs its argument.
467 This is quite expensive.])
469 valgrind_path_defines=
472 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
473 dnl # an if statement. This was the source of very frustrating bugs
474 dnl # in converting to autoconf 2.5x!
475 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
477 if test x$ac_valgrind_checking != x ; then
478 # It is certainly possible that there's valgrind but no valgrind.h.
479 # GCC relies on making annotations so we must have both.
480 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
481 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
482 [[#include <valgrind/memcheck.h>
483 #ifndef VALGRIND_DISCARD
484 #error VALGRIND_DISCARD not defined
486 [gcc_cv_header_valgrind_memcheck_h=yes],
487 [gcc_cv_header_valgrind_memcheck_h=no])
488 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
489 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
490 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
491 [[#include <memcheck.h>
492 #ifndef VALGRIND_DISCARD
493 #error VALGRIND_DISCARD not defined
495 [gcc_cv_header_memcheck_h=yes],
496 [gcc_cv_header_memcheck_h=no])
497 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
498 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
499 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
500 if test "x$valgrind_path" = "x" \
501 || (test $have_valgrind_h = no \
502 && test $gcc_cv_header_memcheck_h = no \
503 && test $gcc_cv_header_valgrind_memcheck_h = no); then
504 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
506 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
507 valgrind_command="$valgrind_path -q"
508 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
509 [Define if you want to run subprograms and generated programs
510 through valgrind (a memory checker). This is extremely expensive.])
511 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
512 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
513 [Define if valgrind's valgrind/memcheck.h header is installed.])
515 if test $gcc_cv_header_memcheck_h = yes; then
516 AC_DEFINE(HAVE_MEMCHECK_H, 1,
517 [Define if valgrind's memcheck.h header is installed.])
520 AC_SUBST(valgrind_path_defines)
521 AC_SUBST(valgrind_command)
523 AC_ARG_ENABLE(mapped-location,
524 [ --enable-mapped-location location_t is fileline integer cookie],,
525 enable_mapped_location=no)
527 if test "$enable_mapped_location" = yes ; then
528 AC_DEFINE(USE_MAPPED_LOCATION, 1,
529 [Define if location_t is fileline integer cookie.])
532 # Enable code coverage collection
533 AC_ARG_ENABLE(coverage,
534 [ --enable-coverage[=LEVEL]
535 enable compiler's code coverage collection.
536 Use to measure compiler performance and locate
537 unused parts of the compiler. With LEVEL, specify
538 optimization. Values are opt, noopt,
540 [case "${enableval}" in
542 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
545 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
548 # a.k.a. --disable-coverage
552 AC_MSG_ERROR(unknown coverage setting $enableval)
556 AC_SUBST(coverage_flags)
558 AC_ARG_ENABLE(gather-detailed-mem-stats,
559 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
560 [enable_gather_detailed_mem_stats=no])
561 if test x$enable_gather_detailed_mem_stats = xyes ; then
562 AC_DEFINE(GATHER_STATISTICS, 1,
563 [Define to enable detailed memory allocation stats gathering.])
566 # -------------------------------
567 # Miscenalleous configure options
568 # -------------------------------
572 [ --with-stabs arrange to use stabs instead of host debug format],
576 # Determine whether or not multilibs are enabled.
577 AC_ARG_ENABLE(multilib,
578 [ --enable-multilib enable library support for multiple ABIs],
579 [], [enable_multilib=yes])
580 AC_SUBST(enable_multilib)
582 # Enable __cxa_atexit for C++.
583 AC_ARG_ENABLE(__cxa_atexit,
584 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
587 # Enable C extension for decimal float if target supports it.
588 AC_ARG_ENABLE(decimal-float,
589 [ --enable-decimal-float={no,yes,bid,dpd}
590 enable decimal float extension to C. Selecting 'bid'
591 or 'dpd' choses which decimal floating point format
594 case $enable_decimal_float in
595 yes | no | bid | dpd) ;;
596 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
597 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
602 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
603 enable_decimal_float=yes
606 AC_MSG_WARN(decimal float is not supported for this target, ignored)
607 enable_decimal_float=no
612 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
613 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
614 [Define to 1 to enable decimal float extension to C.])
616 # x86's use BID format instead of DPD
617 case x$enable_decimal_float in
620 i?86*-*-linux* | x86_64*-*-linux*)
621 enable_decimal_float=bid
624 enable_decimal_float=dpd
629 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
630 # dependency on libdecnumber.
631 enable_decimal_float=dpd
634 AC_SUBST(enable_decimal_float)
636 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
637 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
638 [Define to 1 to specify that we are using the BID decimal floating
639 point format instead of DPD])
642 # Pass with no value to take the default
643 # Pass with a value to specify a thread package
644 AC_ARG_ENABLE(threads,
645 [ --enable-threads enable thread usage for target GCC
646 --enable-threads=LIB use LIB thread package for target GCC],,
650 [ --enable-tls enable or disable generation of tls code
651 overriding the assembler check for tls support],
655 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
656 Valid choices are 'yes' and 'no'.]) ;;
660 AC_ARG_ENABLE(objc-gc,
661 [ --enable-objc-gc enable the use of Boehm's garbage collector with
662 the GNU Objective-C runtime],
663 if test x$enable_objc_gc = xno; then
671 [ --with-dwarf2 force the default debug format to be DWARF 2],
672 dwarf2="$with_dwarf2",
675 AC_ARG_ENABLE(shared,
676 [ --disable-shared don't provide a shared libgcc],
678 case $enable_shared in
682 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
683 for pkg in $enableval; do
684 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
691 ], [enable_shared=yes])
692 AC_SUBST(enable_shared)
694 AC_ARG_WITH(build-sysroot,
695 [ --with-build-sysroot=sysroot
696 use sysroot as the system root during the build])
699 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
701 case ${with_sysroot} in
702 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
703 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
706 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
707 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
709 if test "x$prefix" = xNONE; then
710 test_prefix=/usr/local
714 if test "x$exec_prefix" = xNONE; then
715 test_exec_prefix=$test_prefix
717 test_exec_prefix=$exec_prefix
719 case ${TARGET_SYSTEM_ROOT} in
720 "${test_prefix}"|"${test_prefix}/"*|\
721 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
722 '${prefix}'|'${prefix}/'*|\
723 '${exec_prefix}'|'${exec_prefix}/'*)
724 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
725 TARGET_SYSTEM_ROOT_DEFINE="$t"
730 TARGET_SYSTEM_ROOT_DEFINE=
731 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
733 AC_SUBST(TARGET_SYSTEM_ROOT)
734 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
735 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
737 # Build with intermodule optimisations
738 AC_ARG_ENABLE(intermodule,
739 [ --enable-intermodule build the compiler in one step],
740 [case ${enable_intermodule} in
741 yes) onestep="-onestep";;
747 # Sanity check enable_languages in case someone does not run the toplevel
748 # configure # script.
749 AC_ARG_ENABLE(languages,
750 [ --enable-languages=LIST specify which front-ends to build],
751 [case ,${enable_languages}, in
753 # go safe -- we cannot be much sure without the toplevel
755 # analysis of which target libs are present and usable
759 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
764 enable_languages=c,${enable_languages}
767 [enable_languages=c])
769 # Used by documentation targets
770 AC_SUBST(datarootdir)
774 # -------------------------
775 # Checks for other programs
776 # -------------------------
780 # Find some useful tools
782 # We need awk to create options.c and options.h.
783 # Bail out if it's missing.
785 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
793 # By default, the Darwin ranlib will not treat common symbols as
794 # definitions when building the archive table of contents. Other
795 # ranlibs do that; pass an option to the Darwin ranlib that makes
796 # it behave similarly.
802 AC_SUBST(ranlib_flags)
806 # See if cmp has --ignore-initial.
807 gcc_AC_PROG_CMP_IGNORE_INITIAL
809 # See if we have the mktemp command.
810 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
812 # See if makeinfo has been installed and is modern enough
813 # that we can use it.
814 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
815 [GNU texinfo.* \([0-9][0-9.]*\)],
817 if test $gcc_cv_prog_makeinfo_modern = no; then
819 *** Makeinfo is missing or too old.
820 *** Info documentation will not be built.])
827 # Is pod2man recent enough to regenerate manpages?
828 AC_MSG_CHECKING([for recent Pod::Man])
829 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
831 GENERATED_MANPAGES=generated-manpages
836 AC_SUBST(GENERATED_MANPAGES)
838 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
841 dnl Don't use AC_PROG_LEX; we insist on flex.
842 dnl LEXLIB is not useful in gcc.
843 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
846 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
848 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
849 # check for build == host before using them.
852 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
853 && test -d ../binutils ; then
854 NM='$(objdir)/../binutils/nm-new'
856 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
860 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
861 && test -d ../binutils ; then
862 AR='$(objdir)/../binutils/ar'
864 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
868 # --------------------
869 # Checks for C headers
870 # --------------------
872 AC_MSG_CHECKING(for GNU C library)
873 AC_CACHE_VAL(gcc_cv_glibc,
874 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
875 [[#include <features.h>]], [[
876 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
877 #error Not a GNU C library system
881 AC_MSG_RESULT($gcc_cv_glibc)
882 if test $gcc_cv_glibc = yes; then
883 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
886 # Need to reject headers which give warnings, so that the -Werror bootstrap
887 # works later. *sigh* This needs to come before all header checks.
894 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
895 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
896 sys/resource.h sys/param.h sys/times.h sys/stat.h \
897 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
899 # Check for thread headers.
900 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
901 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
903 # These tests can't be done till we know if we have limits.h.
912 # These libraries may be used by collect2.
913 # We may need a special search path to get them linked.
914 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
916 for libs in '' -lld -lmld \
917 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
918 '-L/usr/lib/cmplrs/cc3.11 -lmld'
921 AC_TRY_LINK_FUNC(ldopen,
922 [gcc_cv_collect2_libs="$libs"; break])
925 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
926 case $gcc_cv_collect2_libs in
928 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
930 AC_SUBST(COLLECT2_LIBS)
932 # When building Ada code on Alpha, we need exc_resume which is usually in
933 # -lexc. So test for it.
936 AC_SEARCH_LIBS(exc_resume, exc)
939 AC_SUBST(GNAT_LIBEXC)
941 # Some systems put ldexp and frexp in libm instead of libc; assume
942 # they're both in the same place. jcf-dump needs them.
945 AC_SEARCH_LIBS(ldexp, m)
950 # Use <inttypes.h> only if it exists,
951 # doesn't clash with <sys/types.h>, and declares intmax_t.
952 AC_MSG_CHECKING(for inttypes.h)
953 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
954 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
955 [[#include <sys/types.h>
956 #include <inttypes.h>]],
957 [[intmax_t i = -1;]])],
958 [gcc_cv_header_inttypes_h=yes],
959 [gcc_cv_header_inttypes_h=no])])
960 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
961 if test $gcc_cv_header_inttypes_h = yes; then
962 AC_DEFINE(HAVE_INTTYPES_H, 1,
963 [Define if you have a working <inttypes.h> header file.])
966 dnl Disabled until we have a complete test for buggy enum bitfields.
967 dnl gcc_AC_C_ENUM_BF_UNSIGNED
969 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
970 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
971 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
972 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
973 putchar_unlocked putc_unlocked)
974 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
975 sysconf strsignal getrusage nl_langinfo scandir alphasort \
976 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
979 if test x$ac_cv_func_mbstowcs = xyes; then
980 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
981 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
987 [gcc_cv_func_mbstowcs_works=yes],
988 [gcc_cv_func_mbstowcs_works=no],
989 [gcc_cv_func_mbstowcs_works=yes])])
990 if test x$gcc_cv_func_mbstowcs_works = xyes; then
991 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
992 [Define this macro if mbstowcs does not crash when its
993 first argument is NULL.])
997 AC_CHECK_TYPE(ssize_t, int)
999 # Try to determine the array type of the second argument of getgroups
1000 # for the target system (int or gid_t).
1002 if test "${target}" = "${build}"; then
1003 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1006 # This condition may need some tweaking. It should include all
1007 # targets where the array type of the second argument of getgroups
1008 # is int and the type of gid_t is not equivalent to int.
1009 *-*-sunos* | *-*-ultrix*)
1010 TARGET_GETGROUPS_T=int
1013 TARGET_GETGROUPS_T=gid_t
1017 AC_SUBST(TARGET_GETGROUPS_T)
1019 gcc_AC_FUNC_MMAP_BLACKLIST
1023 # Under VMS, vfork works very differently than on Unix. The standard test
1024 # won't work, and it isn't easily adaptable. It makes more sense to
1026 ac_cv_func_vfork_works=yes
1032 # Until we have in-tree GNU iconv:
1034 AC_SUBST(LIBICONV_DEP)
1040 # We will need to find libiberty.h and ansidecl.h
1041 saved_CFLAGS="$CFLAGS"
1042 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1043 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1044 strsignal strstr strverscmp \
1045 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1046 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1047 #include "ansidecl.h"
1048 #include "system.h"])
1050 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1051 #include "ansidecl.h"
1053 #ifdef HAVE_SYS_RESOURCE_H
1054 #include <sys/resource.h>
1058 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1059 #include "ansidecl.h"
1061 #ifdef HAVE_SYS_RESOURCE_H
1062 #include <sys/resource.h>
1064 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1065 [Define to \`long' if <sys/resource.h> doesn't define.])])
1067 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1068 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1069 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1070 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1071 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1072 #include "ansidecl.h"
1081 gcc_AC_CHECK_DECLS(times, , ,[
1082 #include "ansidecl.h"
1084 #ifdef HAVE_SYS_TIMES_H
1085 #include <sys/times.h>
1089 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1090 #include "ansidecl.h"
1095 # More time-related stuff.
1096 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1097 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1098 #include "ansidecl.h"
1100 #ifdef HAVE_SYS_TIMES_H
1101 #include <sys/times.h>
1103 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1104 if test $ac_cv_struct_tms = yes; then
1105 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1106 [Define if <sys/times.h> defines struct tms.])
1109 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1110 # revisit after autoconf 2.50.
1111 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1112 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1113 #include "ansidecl.h"
1115 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1116 if test $gcc_cv_type_clock_t = yes; then
1117 AC_DEFINE(HAVE_CLOCK_T, 1,
1118 [Define if <time.h> defines clock_t.])
1121 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1122 CFLAGS="$saved_CFLAGS"
1124 gcc_AC_INITFINI_ARRAY
1126 # mkdir takes a single argument on some systems.
1127 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1135 # With Setjmp/Longjmp based exception handling.
1136 AC_ARG_ENABLE(sjlj-exceptions,
1137 [ --enable-sjlj-exceptions
1138 arrange to use setjmp/longjmp exception handling],
1139 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1140 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1141 [Define 0/1 to force the choice for exception handling model.])])
1143 # For platforms with the unwind ABI which includes an unwind library,
1144 # libunwind, we can choose to use the system libunwind.
1145 AC_ARG_WITH(system-libunwind,
1146 [ --with-system-libunwind use installed libunwind])
1148 # config.gcc also contains tests of with_system_libunwind.
1149 if test x$with_system_libunwind = xyes; then
1150 AC_DEFINE(HAVE_GETIPINFO, 1,
1151 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1154 # --------------------------------------------------------
1155 # Build, host, and target specific configuration fragments
1156 # --------------------------------------------------------
1158 # Collect build-machine-specific information.
1159 . ${srcdir}/config.build
1161 # Collect host-machine-specific information.
1162 . ${srcdir}/config.host
1166 # Collect target-machine-specific information.
1167 . ${srcdir}/config.gcc
1169 extra_objs="${host_extra_objs} ${extra_objs}"
1170 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1172 # Default the target-machine variables that were not explicitly set.
1173 if test x"$tm_file" = x
1174 then tm_file=$cpu_type/$cpu_type.h; fi
1176 if test x"$extra_headers" = x
1177 then extra_headers=; fi
1179 if test x$md_file = x
1180 then md_file=$cpu_type/$cpu_type.md; fi
1182 if test x$out_file = x
1183 then out_file=$cpu_type/$cpu_type.c; fi
1185 if test x"$tmake_file" = x
1186 then tmake_file=$cpu_type/t-$cpu_type
1189 if test x"$dwarf2" = xyes
1190 then tm_file="$tm_file tm-dwarf2.h"
1193 # Say what files are being used for the output code and MD file.
1194 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1195 echo "Using \`$srcdir/config/$md_file' as machine description file."
1197 # If any of the xm_file variables contain nonexistent files, warn
1198 # about them and drop them.
1201 for x in $build_xm_file; do
1202 if test -f $srcdir/config/$x
1204 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1210 for x in $host_xm_file; do
1211 if test -f $srcdir/config/$x
1213 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1219 for x in $xm_file; do
1220 if test -f $srcdir/config/$x
1222 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1228 for f in $tm_file; do
1231 if test $count = ax; then
1232 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1234 echo "Using the following target machine macro files:"
1235 for f in $tm_file; do
1236 echo " $srcdir/config/$f"
1240 if test x$need_64bit_hwint = xyes; then
1241 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1242 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1245 if test x$use_long_long_for_widest_fast_int = xyes; then
1246 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1247 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1248 efficiently supported by the host hardware.])
1252 for f in $host_xm_file; do
1255 if test $count = a; then
1257 elif test $count = ax; then
1258 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1260 echo "Using the following host machine macro files:"
1261 for f in $host_xm_file; do
1262 echo " $srcdir/config/$f"
1265 echo "Using ${out_host_hook_obj} for host machine hooks."
1267 if test "$host_xm_file" != "$build_xm_file"; then
1269 for f in $build_xm_file; do
1272 if test $count = a; then
1274 elif test $count = ax; then
1275 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1277 echo "Using the following build machine macro files:"
1278 for f in $build_xm_file; do
1279 echo " $srcdir/config/$f"
1286 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1287 gcc_cv_mcontext_underscores,
1289 #include <sys/cdefs.h>
1290 #include <sys/signal.h>
1291 #include <ucontext.h>
1292 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1294 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1295 if test $gcc_cv_mcontext_underscores = yes; then
1296 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1297 [mcontext_t fields start with __])
1306 # Check if a valid thread package
1307 case ${enable_threads} in
1310 target_thread_file='single'
1314 target_thread_file='single'
1316 aix | dce | gnat | irix | posix | posix95 | rtems | \
1317 single | solaris | vxworks | win32 )
1318 target_thread_file=${enable_threads}
1321 echo "${enable_threads} is an unknown thread package" 1>&2
1326 if test x${thread_file} = x; then
1327 # No thread file set by target-specific clauses in config.gcc,
1328 # so use file chosen by default logic above
1329 thread_file=${target_thread_file}
1332 # Make gthr-default.h if we have a thread file.
1334 if test $thread_file != single; then
1335 rm -f gthr-default.h
1336 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1337 gthread_flags=-DHAVE_GTHR_DEFAULT
1339 AC_SUBST(gthread_flags)
1346 if test x$enable___cxa_atexit = xyes || \
1347 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1348 if test x$host = x$target; then
1350 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1351 # keyed to flag_use_cxa_atexit
1356 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1357 [echo "__cxa_atexit can't be enabled on this target"])
1361 # We can't check for __cxa_atexit when building a cross, so assume
1365 if test x$use_cxa_atexit = xyes; then
1366 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1367 [Define if you want to use __cxa_atexit, rather than atexit, to
1368 register C++ destructors for local statics and global objects.
1369 This is essential for fully standards-compliant handling of
1370 destructors, but requires __cxa_atexit in libc.])
1375 if test x$with_system_libunwind = xyes; then
1376 if test x$host = x$target; then
1377 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1380 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1381 if test x$use_getipinfo = xyes; then
1382 AC_DEFINE(HAVE_GETIPINFO, 1,
1383 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1385 echo "The system unwind library does not support _Unwind_GetIPInfo."
1388 # Look for a file containing extra machine modes.
1389 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1390 extra_modes_file='$(srcdir)'/config/${extra_modes}
1391 AC_SUBST(extra_modes_file)
1392 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1393 [Define to the name of a file containing a list of extra machine modes
1394 for this architecture.])
1397 # Convert extra_options into a form suitable for Makefile use.
1399 for f in $extra_options; do
1400 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1402 AC_SUBST(extra_opt_files)
1404 # auto-host.h is the file containing items generated by autoconf and is
1405 # the first file included by config.h.
1406 # If host=build, it is correct to have bconfig include auto-host.h
1407 # as well. If host!=build, we are in error and need to do more
1408 # work to find out the build config parameters.
1409 if test x$host = x$build
1411 build_auto=auto-host.h
1413 # We create a subdir, then run autoconf in the subdir.
1414 # To prevent recursion we set host and build for the new
1415 # invocation of configure to the build for this invocation
1422 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1423 *) realsrcdir=../${srcdir};;
1425 saved_CFLAGS="${CFLAGS}"
1426 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1427 ${realsrcdir}/configure \
1428 --enable-languages=${enable_languages-all} \
1429 --target=$target_alias --host=$build_alias --build=$build_alias
1430 CFLAGS="${saved_CFLAGS}"
1432 # We just finished tests for the build machine, so rename
1433 # the file auto-build.h in the gcc directory.
1434 mv auto-host.h ../auto-build.h
1437 build_auto=auto-build.h
1439 AC_SUBST(build_subdir)
1441 tm_file="${tm_file} defaults.h"
1442 tm_p_file="${tm_p_file} tm-preds.h"
1443 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1444 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1445 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1446 # put this back in temporarily.
1447 xm_file="auto-host.h ansidecl.h ${xm_file}"
1454 # Compile in configure arguments.
1455 if test -f configargs.h ; then
1456 # Being re-configured.
1457 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1458 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1460 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1463 # Double all backslashes and backslash all quotes to turn
1464 # gcc_config_arguments into a C string.
1465 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1466 $gcc_config_arguments
1468 gcc_config_arguments_str=`cat conftest.out`
1471 cat > configargs.h <<EOF
1472 /* Generated automatically. */
1473 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1474 static const char thread_model[] = "$thread_file";
1476 static const struct {
1477 const char *name, *value;
1478 } configure_default_options[] = $configure_default_options;
1482 # Internationalization
1483 ZW_GNU_GETTEXT_SISTER_DIR
1485 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1486 # -liconv on the link line twice.
1487 case "$LIBINTL" in *$LIBICONV*)
1491 AC_ARG_ENABLE(secureplt,
1492 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1495 # Windows32 Registry support for specifying GCC installation paths.
1496 AC_ARG_ENABLE(win32-registry,
1497 [ --disable-win32-registry
1498 disable lookup of installation paths in the
1499 Registry on Windows hosts
1500 --enable-win32-registry enable registry lookup (default)
1501 --enable-win32-registry=KEY
1502 use KEY instead of GCC version as the last portion
1503 of the registry key],,)
1506 win32 | pe | cygwin* | mingw32* | uwin*)
1507 if test "x$enable_win32_registry" != xno; then
1508 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1511 if test "x$enable_win32_registry" != xno; then
1512 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1513 [Define to 1 if installation paths should be looked up in the Windows
1514 Registry. Ignored on non-Windows hosts.])
1516 if test "x$enable_win32_registry" != xyes \
1517 && test "x$enable_win32_registry" != x; then
1518 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1519 [Define to be the last component of the Windows registry key under which
1520 to look for installation paths. The full key used will be
1521 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1522 The default is the GCC version number.])
1528 # Get an absolute path to the GCC top-level source directory
1529 holddir=`${PWDCMD-pwd}`
1531 topdir=`${PWDCMD-pwd}`
1534 # Conditionalize the makefile for this host machine.
1536 for f in ${host_xmake_file}
1538 if test -f ${srcdir}/config/$f
1540 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1544 # Conditionalize the makefile for this target machine.
1546 for f in ${tmake_file}
1548 if test -f ${srcdir}/config/$f
1550 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1553 tmake_file="${tmake_file_}"
1555 # This is a terrible hack which will go away some day.
1556 host_cc_for_libada=${CC}
1557 AC_SUBST(host_cc_for_libada)
1559 out_object_file=`basename $out_file .c`.o
1561 tm_file_list="options.h"
1562 tm_include_list="options.h"
1563 for f in $tm_file; do
1566 f=`echo $f | sed 's/^..//'`
1567 tm_file_list="${tm_file_list} $f"
1568 tm_include_list="${tm_include_list} $f"
1571 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1572 tm_include_list="${tm_include_list} $f"
1575 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1576 tm_include_list="${tm_include_list} config/$f"
1583 for f in $tm_p_file; do
1586 tm_p_file_list="${tm_p_file_list} $f"
1587 tm_p_include_list="${tm_p_include_list} $f"
1590 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1591 tm_p_include_list="${tm_p_include_list} config/$f"
1597 for f in $xm_file; do
1600 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1601 xm_include_list="${xm_include_list} $f"
1604 xm_file_list="${xm_file_list} $f"
1605 xm_include_list="${xm_include_list} $f"
1608 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1609 xm_include_list="${xm_include_list} config/$f"
1615 host_xm_include_list=
1616 for f in $host_xm_file; do
1619 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1620 host_xm_include_list="${host_xm_include_list} $f"
1623 host_xm_file_list="${host_xm_file_list} $f"
1624 host_xm_include_list="${host_xm_include_list} $f"
1627 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1628 host_xm_include_list="${host_xm_include_list} config/$f"
1634 for f in $build_xm_file; do
1637 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1638 build_xm_include_list="${build_xm_include_list} $f"
1640 auto-build.h | auto-host.h )
1641 build_xm_file_list="${build_xm_file_list} $f"
1642 build_xm_include_list="${build_xm_include_list} $f"
1645 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1646 build_xm_include_list="${build_xm_include_list} config/$f"
1651 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1652 # cross-compiler which does not use the native headers and libraries.
1653 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1654 CROSS= AC_SUBST(CROSS)
1655 ALL=all.internal AC_SUBST(ALL)
1656 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1658 if test "x$with_build_sysroot" != x; then
1659 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1661 # This value is used, even on a native system, because
1662 # CROSS_SYSTEM_HEADER_DIR is just
1663 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1664 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1667 if test x$host != x$target
1669 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1671 SYSTEM_HEADER_DIR=$build_system_header_dir
1672 case "$host","$target" in
1673 # Darwin crosses can use the host system's libraries and headers,
1674 # because of the fat library support. Of course, it must be the
1675 # same version of Darwin on both sides. Allow the user to
1676 # just say --target=foo-darwin without a version number to mean
1677 # "the version on this system".
1678 *-*-darwin*,*-*-darwin*)
1679 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1680 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1681 if test $hostos = $targetos -o $targetos = darwin ; then
1683 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1688 i?86-*-*,x86_64-*-* \
1689 | powerpc*-*-*,powerpc64*-*-*)
1690 CROSS="$CROSS -DNATIVE_CROSS" ;;
1692 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1693 SYSTEM_HEADER_DIR=$build_system_header_dir
1696 # If this is a cross-compiler that does not
1697 # have its own set of headers then define
1700 # If this is using newlib, without having the headers available now,
1701 # then define inhibit_libc in LIBGCC2_CFLAGS.
1702 # This prevents libgcc2 from containing any code which requires libc
1705 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1706 test x$with_newlib = xyes ; } &&
1707 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1710 AC_SUBST(inhibit_libc)
1712 # When building gcc with a cross-compiler, we need to adjust things so
1713 # that the generator programs are still built with the native compiler.
1714 # Also, we cannot run fixincludes or fix-header.
1716 # These are the normal (build=host) settings:
1717 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1718 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1719 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1721 # Possibly disable fixproto, on a per-target basis.
1722 case ${use_fixproto} in
1727 STMP_FIXPROTO=stmp-fixproto
1730 AC_SUBST(STMP_FIXPROTO)
1732 # And these apply if build != host, or we are generating coverage data
1733 if test x$build != x$host || test "x$coverage_flags" != x
1735 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1737 if test "x$TARGET_SYSTEM_ROOT" = x; then
1738 if test "x$STMP_FIXPROTO" != x; then
1739 STMP_FIXPROTO=stmp-install-fixproto
1744 # Expand extra_headers to include complete path.
1745 # This substitutes for lots of t-* files.
1747 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1748 for file in ${extra_headers} ; do
1749 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1752 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1753 if test x"$use_gcc_tgmath" = xyes
1754 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1757 # Define collect2 in Makefile.
1758 case $host_can_use_collect2 in
1760 *) collect2='collect2$(exeext)' ;;
1762 AC_SUBST([collect2])
1764 # Add a definition of USE_COLLECT2 if system wants one.
1765 case $use_collect2 in
1766 no) use_collect2= ;;
1769 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1770 xm_defines="${xm_defines} USE_COLLECT2"
1771 case $host_can_use_collect2 in
1773 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1779 # ---------------------------
1780 # Assembler & linker features
1781 # ---------------------------
1783 # Identify the assembler which will work hand-in-glove with the newly
1784 # built GCC, so that we can examine its features. This is the assembler
1785 # which will be driven by the driver program.
1787 # If build != host, and we aren't building gas in-tree, we identify a
1788 # build->target assembler and hope that it will have the same features
1789 # as the host->target assembler we'll be using.
1790 gcc_cv_gas_major_version=
1791 gcc_cv_gas_minor_version=
1792 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1794 m4_pattern_allow([AS_FOR_TARGET])dnl
1795 AS_VAR_SET_IF(gcc_cv_as,, [
1796 if test -x "$DEFAULT_ASSEMBLER"; then
1797 gcc_cv_as="$DEFAULT_ASSEMBLER"
1798 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1799 && test -f ../gas/Makefile \
1800 && test x$build = x$host; then
1801 gcc_cv_as=../gas/as-new$build_exeext
1802 elif test -x as$build_exeext; then
1803 # Build using assembler in the current directory.
1804 gcc_cv_as=./as$build_exeext
1805 elif test -x $AS_FOR_TARGET; then
1806 gcc_cv_as="$AS_FOR_TARGET"
1808 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1811 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1812 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1813 case "$ORIGINAL_AS_FOR_TARGET" in
1814 ./as | ./as$build_exeext) ;;
1815 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1818 AC_MSG_CHECKING(what assembler to use)
1819 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1820 # Single tree build which includes gas. We want to prefer it
1821 # over whatever linker top-level may have detected, since
1822 # we'll use what we're building after installation anyway.
1823 AC_MSG_RESULT(newly built gas)
1825 _gcc_COMPUTE_GAS_VERSION
1826 in_tree_gas_is_elf=no
1827 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1828 || (grep 'obj_format = multi' ../gas/Makefile \
1829 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1831 in_tree_gas_is_elf=yes
1834 AC_MSG_RESULT($gcc_cv_as)
1838 # Identify the linker which will work hand-in-glove with the newly
1839 # built GCC, so that we can examine its features. This is the linker
1840 # which will be driven by the driver program.
1842 # If build != host, and we aren't building gas in-tree, we identify a
1843 # build->target linker and hope that it will have the same features
1844 # as the host->target linker we'll be using.
1845 gcc_cv_gld_major_version=
1846 gcc_cv_gld_minor_version=
1847 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1848 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1850 AS_VAR_SET_IF(gcc_cv_ld,, [
1851 if test -x "$DEFAULT_LINKER"; then
1852 gcc_cv_ld="$DEFAULT_LINKER"
1853 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1854 && test -f ../ld/Makefile \
1855 && test x$build = x$host; then
1856 gcc_cv_ld=../ld/ld-new$build_exeext
1857 elif test -x collect-ld$build_exeext; then
1858 # Build using linker in the current directory.
1859 gcc_cv_ld=./collect-ld$build_exeext
1860 elif test -x $LD_FOR_TARGET; then
1861 gcc_cv_ld="$LD_FOR_TARGET"
1863 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1866 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1867 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1868 case "$ORIGINAL_LD_FOR_TARGET" in
1869 ./collect-ld | ./collect-ld$build_exeext) ;;
1870 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1873 AC_MSG_CHECKING(what linker to use)
1874 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1875 # Single tree build which includes ld. We want to prefer it
1876 # over whatever linker top-level may have detected, since
1877 # we'll use what we're building after installation anyway.
1878 AC_MSG_RESULT(newly built ld)
1880 in_tree_ld_is_elf=no
1881 if (grep 'EMUL = .*elf' ../ld/Makefile \
1882 || grep 'EMUL = .*linux' ../ld/Makefile \
1883 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1884 in_tree_ld_is_elf=yes
1886 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
1889 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1890 if test x$gcc_cv_gld_version != x; then
1894 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1895 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1898 AC_MSG_RESULT($gcc_cv_ld)
1902 # Figure out what nm we will be using.
1903 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1904 AS_VAR_SET_IF(gcc_cv_nm,, [
1905 if test -f $gcc_cv_binutils_srcdir/configure.in \
1906 && test -f ../binutils/Makefile \
1907 && test x$build = x$host; then
1908 gcc_cv_nm=../binutils/nm-new$build_exeext
1909 elif test -x nm$build_exeext; then
1910 gcc_cv_nm=./nm$build_exeext
1911 elif test -x $NM_FOR_TARGET; then
1912 gcc_cv_nm="$NM_FOR_TARGET"
1914 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1917 AC_MSG_CHECKING(what nm to use)
1918 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1919 # Single tree build which includes binutils.
1920 AC_MSG_RESULT(newly built nm)
1923 AC_MSG_RESULT($gcc_cv_nm)
1927 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1928 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1929 case "$ORIGINAL_NM_FOR_TARGET" in
1930 ./nm | ./nm$build_exeext) ;;
1931 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1935 # Figure out what objdump we will be using.
1936 AS_VAR_SET_IF(gcc_cv_objdump,, [
1937 if test -f $gcc_cv_binutils_srcdir/configure.in \
1938 && test -f ../binutils/Makefile \
1939 && test x$build = x$host; then
1940 # Single tree build which includes binutils.
1941 gcc_cv_objdump=../binutils/objdump$build_exeext
1942 elif test -x objdump$build_exeext; then
1943 gcc_cv_objdump=./objdump$build_exeext
1944 elif test -x $OBJDUMP_FOR_TARGET; then
1945 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1947 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1950 AC_MSG_CHECKING(what objdump to use)
1951 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1952 # Single tree build which includes binutils.
1953 AC_MSG_RESULT(newly built objdump)
1954 elif test x$gcc_cv_objdump = x; then
1955 AC_MSG_RESULT(not found)
1957 AC_MSG_RESULT($gcc_cv_objdump)
1960 # Figure out what assembler alignment features are present.
1961 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1965 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1966 [Define if your assembler supports .balign and .p2align.])])
1968 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1971 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1972 [Define if your assembler supports specifying the maximum number
1973 of bytes to skip when using the GAS .p2align command.])])
1975 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
1978 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
1979 [Define if your assembler supports .literal16.])])
1981 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
1983 [conftest_label1: .word 0
1985 conftest_label2: .word 0
1987 [if test x$gcc_cv_nm != x; then
1988 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1989 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1990 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
1992 else gcc_cv_as_subsection_m1=yes
1994 rm -f conftest.nm1 conftest.nm2
1996 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1997 [Define if your assembler supports .subsection and .subsection -1 starts
1998 emitting at the beginning of your section.])])
2000 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2003 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2005 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2007 [ .weakref foobar, barfnot],,
2008 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2010 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2013 .NSUBSPA $CODE$,COMDAT],,
2014 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2016 # .hidden needs to be supported in both the assembler and the linker,
2017 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2018 # This is irritatingly difficult to feature test for; we have to check the
2019 # date string after the version number. If we've got an in-tree
2020 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2022 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2023 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2028 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2029 [if test $in_tree_ld = yes ; then
2031 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2032 && test $in_tree_ld_is_elf = yes; then
2033 gcc_cv_ld_hidden=yes
2036 gcc_cv_ld_hidden=yes
2037 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2038 if echo "$ld_ver" | grep GNU > /dev/null; then
2040 ld_vers=`echo $ld_ver | sed -n \
2041 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2042 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2043 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2044 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2045 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2046 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2047 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'`
2048 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2049 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2050 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2051 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2052 if test 0"$ld_date" -lt 20020404; then
2053 if test -n "$ld_date"; then
2054 # If there was date string, but was earlier than 2002-04-04, fail
2056 elif test -z "$ld_vers"; then
2057 # If there was no date string nor ld version number, something is wrong
2060 test -z "$ld_vers_patch" && ld_vers_patch=0
2061 if test "$ld_vers_major" -lt 2; then
2063 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2064 gcc_cv_ld_hidden="no"
2065 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2073 hppa64*-*-hpux* | ia64*-*-hpux*)
2074 gcc_cv_ld_hidden=yes
2082 libgcc_visibility=no
2083 AC_SUBST(libgcc_visibility)
2084 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2085 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2086 libgcc_visibility=yes
2087 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2088 [Define if your assembler and linker support .hidden.])
2091 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2092 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2100 [# GAS versions before 2.11 do not support uleb128,
2101 # despite appearing to.
2102 # ??? There exists an elf-specific test that will crash
2103 # the assembler. Perhaps it's better to figure out whether
2104 # arbitrary sections are supported and try the test.
2105 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2106 if echo "$as_ver" | grep GNU > /dev/null; then
2108 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2109 as_major=`echo $as_ver | sed 's/\..*//'`
2110 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2112 if test $as_major -eq 2 && test $as_minor -lt 11
2114 else gcc_cv_as_leb128=yes
2117 [AC_DEFINE(HAVE_AS_LEB128, 1,
2118 [Define if your assembler supports .sleb128 and .uleb128.])])
2120 # GAS versions up to and including 2.11.0 may mis-optimize
2122 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2130 .section .eh_frame,"aw",@progbits
2132 .4byte .LECIE1-.LSCIE1
2146 .4byte .LEFDE1-.LASFDE1
2148 .4byte .LASFDE1-__FRAME_BEGIN__
2156 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2157 cat > conftest.lit <<EOF
2158 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2159 0010 01000000 12000000 18000000 00000000 ................
2160 0020 08000000 04080000 0044 .........D @&t@
2162 cat > conftest.big <<EOF
2163 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2164 0010 00000001 00000012 00000018 00000000 ................
2165 0020 00000008 04000000 0844 .........D @&t@
2167 # If the assembler didn't choke, and we can objdump,
2168 # and we got the correct data, then succeed.
2169 # The text in the here-document typically retains its unix-style line
2170 # endings, while the output of objdump will use host line endings.
2171 # Therefore, use diff -b for the comparisons.
2172 if test x$gcc_cv_objdump != x \
2173 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2174 | tail -3 > conftest.got \
2175 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2176 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2178 gcc_cv_as_eh_frame=yes
2179 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2180 gcc_cv_as_eh_frame=buggy
2182 # Uh oh, what do we do now?
2183 gcc_cv_as_eh_frame=no
2186 if test $gcc_cv_as_eh_frame = buggy; then
2187 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2188 [Define if your assembler mis-optimizes .eh_frame data.])
2191 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2192 [elf,2,12,0], [--fatal-warnings],
2193 [.section .rodata.str, "aMS", @progbits, 1])
2194 if test $gcc_cv_as_shf_merge = no; then
2195 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2196 [elf,2,12,0], [--fatal-warnings],
2197 [.section .rodata.str, "aMS", %progbits, 1])
2199 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2200 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2201 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2203 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2204 [elf,2,16,0], [--fatal-warnings],
2205 [.section .text,"axG",@progbits,.foo,comdat])
2206 if test $gcc_cv_as_comdat_group = yes; then
2207 gcc_cv_as_comdat_group_percent=no
2209 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2210 [elf,2,16,0], [--fatal-warnings],
2211 [.section .text,"axG",%progbits,.foo,comdat])
2213 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2215 if test 0"$ld_date" -lt 20050308; then
2216 if test -n "$ld_date"; then
2217 # If there was date string, but was earlier than 2005-03-08, fail
2219 elif test "$ld_vers_major" -lt 2; then
2221 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2226 # assume linkers other than GNU ld don't support COMDAT group
2229 if test $comdat_group = no; then
2230 gcc_cv_as_comdat_group=no
2231 gcc_cv_as_comdat_group_percent=no
2233 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2234 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2235 [Define 0/1 if your assembler and linker support COMDAT groups.])
2237 # Thread-local storage - the check is heavily parametrized.
2246 .section ".tdata","awT",@progbits
2249 ldq $27,__tls_get_addr($29) !literal!1
2250 lda $16,foo($29) !tlsgd!1
2251 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2252 ldq $27,__tls_get_addr($29) !literal!2
2253 lda $16,foo($29) !tlsldm!2
2254 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2255 ldq $1,foo($29) !gotdtprel
2256 ldah $2,foo($29) !dtprelhi
2257 lda $3,foo($2) !dtprello
2258 lda $4,foo($29) !dtprel
2259 ldq $1,foo($29) !gottprel
2260 ldah $2,foo($29) !tprelhi
2261 lda $3,foo($2) !tprello
2262 lda $4,foo($29) !tprel'
2265 tls_as_opt=--fatal-warnings
2269 .section ".tdata","awT",@progbits
2281 .section ".tdata","awT",@progbits
2285 addil LT%foo-$tls_gdidx$,gp
2286 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2289 addil LT%foo-$tls_ldidx$,gp
2291 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2292 addil LR%foo-$tls_dtpoff$,%ret0
2293 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2295 addil LT%foo-$tls_ieoff$,gp
2296 ldw RT%foo-$tls_ieoff$(%r1),%t2
2299 addil LR%foo-$tls_leoff$,%t1
2300 ldo RR%foo-$tls_leoff$(%r1),%t2'
2303 tls_as_opt=--fatal-warnings
2307 .section ".tdata","awT",%progbits
2320 .section ".tdata","awT",@progbits
2324 leal foo@TLSGD(,%ebx,1), %eax
2325 leal foo@TLSLDM(%ebx), %eax
2326 leal foo@DTPOFF(%eax), %edx
2327 movl foo@GOTTPOFF(%ebx), %eax
2328 subl foo@GOTTPOFF(%ebx), %eax
2329 addl foo@GOTNTPOFF(%ebx), %eax
2330 movl foo@INDNTPOFF, %eax
2331 movl $foo@TPOFF, %eax
2332 subl $foo@TPOFF, %eax
2333 leal foo@NTPOFF(%ecx), %eax'
2336 tls_as_opt=--fatal-warnings
2340 .section ".tdata","awT",@progbits
2344 leaq foo@TLSGD(%rip), %rdi
2345 leaq foo@TLSLD(%rip), %rdi
2346 leaq foo@DTPOFF(%rax), %rdx
2347 movq foo@GOTTPOFF(%rip), %rax
2348 movq $foo@TPOFF, %rax'
2351 tls_as_opt=--fatal-warnings
2355 .section ".tdata","awT",@progbits
2358 addl r16 = @ltoff(@dtpmod(foo#)), gp
2359 addl r17 = @ltoff(@dtprel(foo#)), gp
2360 addl r18 = @ltoff(@tprel(foo#)), gp
2361 addl r19 = @dtprel(foo#), gp
2362 adds r21 = @dtprel(foo#), r13
2363 movl r23 = @dtprel(foo#)
2364 addl r20 = @tprel(foo#), gp
2365 adds r22 = @tprel(foo#), r13
2366 movl r24 = @tprel(foo#)'
2369 tls_as_opt=--fatal-warnings
2373 .section .tdata,"awT",@progbits
2377 addiu $4, $28, %tlsgd(x)
2378 addiu $4, $28, %tlsldm(x)
2379 lui $4, %dtprel_hi(x)
2380 addiu $4, $4, %dtprel_lo(x)
2381 lw $4, %gottprel(x)($28)
2382 lui $4, %tprel_hi(x)
2383 addiu $4, $4, %tprel_lo(x)'
2386 tls_as_opt='-32 --fatal-warnings'
2390 .section ".tdata","awT",@progbits
2398 addi 3,31,ld0@got@tlsgd
2400 addi 3,31,x1@got@tlsld
2403 addis 9,3,x2@dtprel@ha
2404 addi 9,9,x2@dtprel@l
2405 lwz 9,x3@got@tprel(31)
2408 addis 9,2,x2@tprel@ha
2409 addi 9,9,x2@tprel@l'
2412 tls_as_opt="-a32 --fatal-warnings"
2416 .section ".tdata","awT",@progbits
2424 addi 3,2,ld0@got@tlsgd
2430 addi 3,2,x1@got@tlsld
2436 addis 9,3,x2@dtprel@ha
2437 addi 9,9,x2@dtprel@l
2440 ld 9,x3@got@dtprel(2)
2446 tls_as_opt="-a64 --fatal-warnings"
2450 .section ".tdata","awT",@progbits
2459 l %r1,foo@GOTNTPOFF(%r12)
2460 l %r1,0(%r1):tls_load:foo
2461 bas %r14,0(%r1,%r13):tls_gdcall:foo
2462 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2465 tls_as_opt="-m31 --fatal-warnings"
2469 .section ".tdata","awT",@progbits
2477 lg %r1,foo@GOTNTPOFF(%r12)
2478 larl %r1,foo@INDNTPOFF
2479 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2480 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2483 tls_as_opt="-m64 -Aesame --fatal-warnings"
2485 sh-*-* | sh[34]-*-*)
2487 .section ".tdata","awT",@progbits
2497 tls_as_opt=--fatal-warnings
2501 sparc*-sun-solaris2.[56789]*)
2502 # TLS was introduced in the Solaris 9 4/04 release but
2503 # we do not enable it by default on Solaris 9 either.
2504 if test "x$enable_tls" = xyes ; then
2510 sparc*-sun-solaris2.*)
2517 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2519 .section ".tdata",#alloc,#write,#tls
2522 sethi %tgd_hi22(foo), %o0
2523 add %o0, %tgd_lo10(foo), %o1
2524 add %l7, %o1, %o0, %tgd_add(foo)
2525 call __tls_get_addr, %tgd_call(foo)
2526 sethi %tldm_hi22(foo), %l1
2527 add %l1, %tldm_lo10(foo), %l2
2528 add %l7, %l2, %o0, %tldm_add(foo)
2529 call __tls_get_addr, %tldm_call(foo)
2530 sethi %tldo_hix22(foo), %l3
2531 xor %l3, %tldo_lox10(foo), %l4
2532 add %o0, %l4, %l5, %tldo_add(foo)
2533 sethi %tie_hi22(foo), %o3
2534 add %o3, %tie_lo10(foo), %o3
2535 ld [%l7 + %o3], %o2, %tie_ld(foo)
2536 add %g7, %o2, %o4, %tie_add(foo)
2537 sethi %tle_hix22(foo), %l1
2538 xor %l1, %tle_lox10(foo), %o5
2539 ld [%g7 + %o5], %o1'
2544 .section ".tdata","awT",@progbits
2547 sethi %tgd_hi22(foo), %o0
2548 add %o0, %tgd_lo10(foo), %o1
2549 add %l7, %o1, %o0, %tgd_add(foo)
2550 call __tls_get_addr, %tgd_call(foo)
2551 sethi %tldm_hi22(foo), %l1
2552 add %l1, %tldm_lo10(foo), %l2
2553 add %l7, %l2, %o0, %tldm_add(foo)
2554 call __tls_get_addr, %tldm_call(foo)
2555 sethi %tldo_hix22(foo), %l3
2556 xor %l3, %tldo_lox10(foo), %l4
2557 add %o0, %l4, %l5, %tldo_add(foo)
2558 sethi %tie_hi22(foo), %o3
2559 add %o3, %tie_lo10(foo), %o3
2560 ld [%l7 + %o3], %o2, %tie_ld(foo)
2561 add %g7, %o2, %o4, %tie_add(foo)
2562 sethi %tle_hix22(foo), %l1
2563 xor %l1, %tle_lox10(foo), %o5
2564 ld [%g7 + %o5], %o1'
2567 tls_as_opt="-32 --fatal-warnings"
2573 if test "x$enable_tls" = xno ; then
2574 : # TLS explicitly disabled.
2575 elif test "x$enable_tls" = xyes ; then
2576 set_have_as_tls=yes # TLS explicitly enabled.
2577 elif test -z "$tls_first_major"; then
2578 : # If we don't have a check, assume no support.
2580 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2581 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2582 [set_have_as_tls=yes])
2584 if test $set_have_as_tls = yes ; then
2585 AC_DEFINE(HAVE_AS_TLS, 1,
2586 [Define if your assembler supports thread-local storage.])
2589 # Target-specific assembler checks.
2591 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2592 gcc_cv_ld_static_dynamic=no
2593 if test $in_tree_ld = yes ; then
2594 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2595 gcc_cv_ld_static_dynamic=yes
2597 elif test x$gcc_cv_ld != x; then
2598 # Check if linker supports -Bstatic/-Bdynamic option
2599 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2600 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2601 gcc_cv_ld_static_dynamic=yes
2604 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2605 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2606 [Define if your linker supports -Bstatic/-Bdynamic option.])
2608 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2610 if test x"$demangler_in_ld" = xyes; then
2611 AC_MSG_CHECKING(linker --demangle support)
2612 gcc_cv_ld_demangle=no
2613 if test $in_tree_ld = yes; then
2614 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2615 gcc_cv_ld_demangle=yes
2617 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2618 # Check if the GNU linker supports --demangle option
2619 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2620 gcc_cv_ld_demangle=yes
2623 if test x"$gcc_cv_ld_demangle" = xyes; then
2624 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2625 [Define if your linker supports --demangle option.])
2627 AC_MSG_RESULT($gcc_cv_ld_demangle)
2631 # All TARGET_ABI_OSF targets.
2632 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2633 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2634 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2637 extbl $3, $2, $3 !lituse_bytoff!1
2638 ldq $2, a($29) !literal!1
2639 ldq $4, b($29) !literal!2
2640 ldq_u $3, 0($2) !lituse_base!1
2641 ldq $27, f($29) !literal!5
2642 jsr $26, ($27), f !lituse_jsr!5
2643 ldah $29, 0($26) !gpdisp!3
2644 lda $0, c($29) !gprel
2645 ldah $1, d($29) !gprelhigh
2646 lda $1, d($1) !gprellow
2647 lda $29, 0($29) !gpdisp!3],,
2648 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2649 [Define if your assembler supports explicit relocations.])])
2650 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2651 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2654 ldq $27, a($29) !literal!1
2655 jsr $26, ($27), a !lituse_jsrdirect!1],,
2656 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2657 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2661 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2662 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2663 [-no-mul-bug-abort], [.text],,
2664 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2665 [Define if your assembler supports the -no-mul-bug-abort option.])])
2669 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2670 [.register %g2, #scratch],,
2671 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2672 [Define if your assembler supports .register.])])
2674 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2676 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2677 [Define if your assembler supports -relax option.])])
2679 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2680 gcc_cv_as_sparc_ua_pcrel,,
2688 .uaword %r_disp32(foo)],
2689 [if test x$gcc_cv_ld != x \
2690 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2691 gcc_cv_as_sparc_ua_pcrel=yes
2694 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2695 [Define if your assembler and linker support unaligned PC relative relocs.])
2697 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2698 gcc_cv_as_sparc_ua_pcrel_hidden,,
2703 .uaword %r_disp32(foo)
2704 .byte 0x32, 0x33, 0x34
2709 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2710 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2711 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2712 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2713 if $gcc_cv_objdump -R conftest 2> /dev/null \
2714 | grep 'DISP32' > /dev/null 2>&1; then
2717 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2721 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2722 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2723 ]) # unaligned pcrel relocs
2725 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2726 gcc_cv_as_sparc_offsetable_lo10,,
2729 or %g1, %lo(ab) + 12, %g1
2730 or %g1, %lo(ab + 12), %g1],
2731 [if test x$gcc_cv_objdump != x \
2732 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2733 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2734 gcc_cv_as_sparc_offsetable_lo10=yes
2736 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2737 [Define if your assembler supports offsetable %lo().])])
2741 i[34567]86-*-* | x86_64-*-*)
2744 cygwin* | pe | mingw32*)
2745 # Used for DWARF 2 in PE
2746 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2747 gcc_cv_as_ix86_pe_secrel32,
2753 [if test x$gcc_cv_ld != x \
2754 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2755 gcc_cv_as_ix86_pe_secrel32=yes
2758 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2759 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2763 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2764 gcc_cv_as_ix86_filds_fists,
2765 [2,9,0],, [filds mem; fists mem],,
2766 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2767 [Define if your assembler uses the new HImode fild and fist notation.])])
2769 gcc_GAS_CHECK_FEATURE([cmov syntax],
2770 gcc_cv_as_ix86_cmov_sun_syntax,,,
2771 [cmovl.l %edx, %eax],,
2772 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2773 [Define if your assembler supports the Sun syntax for cmov.])])
2775 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2776 gcc_cv_as_ix86_ffreep,,,
2778 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2779 [Define if your assembler supports the ffreep mnemonic.])])
2781 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2782 gcc_cv_as_ix86_sahf,,,
2784 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2785 [Define if your assembler supports the sahf mnemonic.])])
2787 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2788 gcc_cv_as_ix86_diff_sect_delta,,,
2796 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2797 [Define if your assembler supports the subtraction of symbols in different sections.])])
2799 # This one is used unconditionally by i386.[ch]; it is to be defined
2800 # to 1 if the feature is present, 0 otherwise.
2801 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2802 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2808 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2809 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2810 [Define true if the assembler supports '.long foo@GOTOFF'.])
2814 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2815 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2817 addl r15 = @ltoffx(x#), gp
2819 ld8.mov r16 = [[r15]], x#],,
2820 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2821 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2827 *-*-aix*) conftest_s=' .machine "pwr5"
2831 gcc_GAS_CHECK_FEATURE([.machine directive support],
2832 gcc_cv_as_machine_directive,,,
2833 [ .machine ppc7400])
2834 if test x$gcc_cv_as_machine_directive != xyes; then
2835 echo "*** This target requires an assembler supporting \".machine\"" >&2
2836 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2837 test x$build = x$target && exit 1
2841 *) conftest_s=' .machine power4
2846 gcc_GAS_CHECK_FEATURE([mfcr field support],
2847 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2849 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2850 [Define if your assembler supports mfcr field.])])
2853 *-*-aix*) conftest_s=' .machine "pwr5"
2856 *) conftest_s=' .machine power5
2861 gcc_GAS_CHECK_FEATURE([popcntb support],
2862 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2864 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2865 [Define if your assembler supports popcntb field.])])
2868 *-*-aix*) conftest_s=' .machine "pwr5x"
2871 *) conftest_s=' .machine power5
2876 gcc_GAS_CHECK_FEATURE([fp round support],
2877 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2879 [AC_DEFINE(HAVE_AS_FPRND, 1,
2880 [Define if your assembler supports fprnd.])])
2883 *-*-aix*) conftest_s=' .machine "pwr6"
2886 *) conftest_s=' .machine power6
2891 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2892 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2894 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2895 [Define if your assembler supports mffgpr and mftgpr.])])
2898 *-*-aix*) conftest_s=' .csect .text[[PR]]
2900 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2904 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2905 *) conftest_s=' .text
2907 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2910 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2911 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2913 [AC_DEFINE(HAVE_AS_REL16, 1,
2914 [Define if your assembler supports R_PPC_REL16 relocs.])])
2917 *-*-aix*) conftest_s=' .machine "pwr6"
2920 *) conftest_s=' .machine power6
2925 gcc_GAS_CHECK_FEATURE([compare bytes support],
2926 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2928 [AC_DEFINE(HAVE_AS_CMPB, 1,
2929 [Define if your assembler supports cmpb.])])
2932 *-*-aix*) conftest_s=' .machine "pwr6"
2935 *) conftest_s=' .machine power6
2940 gcc_GAS_CHECK_FEATURE([decimal float support],
2941 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2943 [AC_DEFINE(HAVE_AS_DFP, 1,
2944 [Define if your assembler supports DFP instructions.])])
2946 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2947 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2948 [.gnu_attribute 4,1],,
2949 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2950 [Define if your assembler supports .gnu_attribute.])])
2954 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2955 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2956 [ lw $4,%gp_rel(foo)($4)],,
2957 [if test x$target_cpu_default = x
2958 then target_cpu_default=MASK_EXPLICIT_RELOCS
2959 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2961 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2962 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2963 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2964 [Define if the assembler understands -mno-shared.])])
2966 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2967 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
2968 [.gnu_attribute 4,1],,
2969 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2970 [Define if your assembler supports .gnu_attribute.])])
2972 gcc_GAS_CHECK_FEATURE([.dtprelword support],
2973 gcc_cv_as_mips_dtprelword, [2,18,0],,
2974 [.section .tdata,"awT",@progbits
2978 .dtprelword x+0x8000],,
2979 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
2980 [Define if your assembler supports .dtprelword.])])
2984 # Mips and HP-UX need the GNU assembler.
2985 # Linux on IA64 might be able to use the Intel assembler.
2988 mips*-*-* | *-*-hpux* )
2989 if test x$gas_flag = xyes \
2990 || test x"$host" != x"$build" \
2991 || test ! -x "$gcc_cv_as" \
2992 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2995 echo "*** This configuration requires the GNU assembler" >&2
3001 # ??? Not all targets support dwarf2 debug_line, even within a version
3002 # of gas. Moreover, we need to emit a valid instruction to trigger any
3003 # info to the output file. So, as supported targets are added to gas 2.11,
3004 # add some instruction here to (also) show we expect this might work.
3005 # ??? Once 2.11 is released, probably need to add first known working
3006 # version to the per-target configury.
3008 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3009 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3010 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3013 ia64*-*-* | s390*-*-*)
3020 if test x"$insn" != x; then
3022 .file 1 \"conftest.s\"
3025 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3026 gcc_cv_as_dwarf2_debug_line,
3027 [elf,2,11,0],, [$conftest_s],
3028 [if test x$gcc_cv_objdump != x \
3029 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3030 | grep debug_line > /dev/null 2>&1; then
3031 gcc_cv_as_dwarf2_debug_line=yes
3034 # The .debug_line file table must be in the exact order that
3035 # we specified the files, since these indices are also used
3036 # by DW_AT_decl_file. Approximate this test by testing if
3037 # the assembler bitches if the same index is assigned twice.
3038 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3039 gcc_cv_as_dwarf2_file_buggy,,,
3043 if test $gcc_cv_as_dwarf2_debug_line = yes \
3044 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3045 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3046 [Define if your assembler supports dwarf2 .file/.loc directives,
3047 and preserves file table indices exactly as given.])
3050 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3051 gcc_cv_as_gdwarf2_flag,
3052 [elf,2,11,0], [--gdwarf2], [$insn],,
3053 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3054 [Define if your assembler supports the --gdwarf2 option.])])
3056 gcc_GAS_CHECK_FEATURE([--gstabs option],
3057 gcc_cv_as_gstabs_flag,
3058 [elf,2,11,0], [--gstabs], [$insn],
3059 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3060 # and warns about it, but still exits successfully. So check for
3062 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3064 else gcc_cv_as_gstabs_flag=yes
3066 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3067 [Define if your assembler supports the --gstabs option.])])
3070 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3071 [gcc_cv_as_line_zero],
3072 [gcc_cv_as_line_zero=no
3073 if test $in_tree_gas = yes; then
3074 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3075 elif test "x$gcc_cv_as" != x; then
3076 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3077 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3078 test "x`cat conftest.out`" = x
3080 gcc_cv_as_line_zero=yes
3082 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3083 cat conftest.s >&AS_MESSAGE_LOG_FD
3084 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3085 cat conftest.out >&AS_MESSAGE_LOG_FD
3087 rm -f conftest.o conftest.s conftest.out
3089 if test "x$gcc_cv_as_line_zero" = xyes; then
3090 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3091 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3094 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3095 gcc_cv_ld_ro_rw_mix=unknown
3096 if test $in_tree_ld = yes ; then
3097 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3098 && test $in_tree_ld_is_elf = yes; then
3099 gcc_cv_ld_ro_rw_mix=read-write
3101 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3102 echo '.section myfoosect, "a"' > conftest1.s
3103 echo '.section myfoosect, "aw"' > conftest2.s
3104 echo '.byte 1' >> conftest2.s
3105 echo '.section myfoosect, "a"' > conftest3.s
3106 echo '.byte 0' >> conftest3.s
3107 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3108 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3109 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3110 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3111 conftest2.o conftest3.o > /dev/null 2>&1; then
3112 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3113 | sed -e '/myfoosect/!d' -e N`
3114 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3115 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3116 gcc_cv_ld_ro_rw_mix=read-only
3118 gcc_cv_ld_ro_rw_mix=read-write
3123 rm -f conftest.* conftest[123].*
3126 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3127 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3128 [Define if your linker links a mix of read-only
3129 and read-write sections into a read-write section.])
3131 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3133 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3134 gcc_cv_ld_eh_frame_hdr=no
3135 if test $in_tree_ld = yes ; then
3136 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3137 && test $in_tree_ld_is_elf = yes; then
3138 gcc_cv_ld_eh_frame_hdr=yes
3140 elif test x$gcc_cv_ld != x; then
3141 # Check if linker supports --eh-frame-hdr option
3142 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3143 gcc_cv_ld_eh_frame_hdr=yes
3146 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3147 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3148 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3149 [Define if your linker supports --eh-frame-hdr option.])
3151 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3153 AC_MSG_CHECKING(linker position independent executable support)
3155 if test $in_tree_ld = yes ; then
3156 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3157 && test $in_tree_ld_is_elf = yes; then
3160 elif test x$gcc_cv_ld != x; then
3161 # Check if linker supports -pie option
3162 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3166 if test x"$gcc_cv_ld_pie" = xyes; then
3167 AC_DEFINE(HAVE_LD_PIE, 1,
3168 [Define if your linker supports -pie option.])
3170 AC_MSG_RESULT($gcc_cv_ld_pie)
3172 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3173 gcc_cv_ld_eh_gc_sections=no
3174 if test $in_tree_ld = yes ; then
3175 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3176 && test $in_tree_ld_is_elf = yes; then
3177 gcc_cv_ld_eh_gc_sections=yes
3179 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3180 cat > conftest.s <<EOF
3183 .type _start, @function
3186 .size _start, .-_start
3187 .section .text.foo,"ax",@progbits
3188 .type foo, @function
3192 .section .gcc_except_table.foo,"a",@progbits
3195 .section .eh_frame,"a",@progbits
3198 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3199 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3200 | grep "gc-sections option ignored" > /dev/null; then
3201 gcc_cv_ld_eh_gc_sections=no
3202 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3203 gcc_cv_ld_eh_gc_sections=yes
3204 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3205 if test x$gcc_cv_as_comdat_group != xyes; then
3206 gcc_cv_ld_eh_gc_sections=no
3207 cat > conftest.s <<EOF
3210 .type _start, @function
3213 .size _start, .-_start
3214 .section .gnu.linkonce.t.foo,"ax",@progbits
3215 .type foo, @function
3219 .section .gcc_except_table.foo,"a",@progbits
3222 .section .eh_frame,"a",@progbits
3225 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3226 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3227 | grep "gc-sections option ignored" > /dev/null; then
3228 gcc_cv_ld_eh_gc_sections=no
3229 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3230 gcc_cv_ld_eh_gc_sections=yes
3236 rm -f conftest.s conftest.o conftest
3240 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3241 gcc_cv_ld_eh_gc_sections=no
3244 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3245 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3246 [Define if your linker supports garbage collection of
3247 sections in presence of EH frames.])
3249 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3255 AC_CACHE_CHECK(linker --as-needed support,
3256 gcc_cv_ld_as_needed,
3257 [gcc_cv_ld_as_needed=no
3258 if test $in_tree_ld = yes ; then
3259 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3260 && test $in_tree_ld_is_elf = yes; then
3261 gcc_cv_ld_as_needed=yes
3263 elif test x$gcc_cv_ld != x; then
3264 # Check if linker supports --as-needed and --no-as-needed options
3265 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3266 gcc_cv_ld_as_needed=yes
3270 if test x"$gcc_cv_ld_as_needed" = xyes; then
3271 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3272 [Define if your linker supports --as-needed and --no-as-needed options.])
3275 case "$target:$tm_file" in
3276 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3277 AC_CACHE_CHECK(linker support for omitting dot symbols,
3278 gcc_cv_ld_no_dot_syms,
3279 [gcc_cv_ld_no_dot_syms=no
3280 if test $in_tree_ld = yes ; then
3281 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3282 gcc_cv_ld_no_dot_syms=yes
3284 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3285 cat > conftest1.s <<EOF
3289 cat > conftest2.s <<EOF
3290 .section ".opd","aw"
3295 .quad .LEfoo,.TOC.@tocbase,0
3301 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3302 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3303 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3304 gcc_cv_ld_no_dot_syms=yes
3306 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3309 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3310 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3311 [Define if your PowerPC64 linker only needs function descriptor syms.])
3316 AC_CACHE_CHECK(linker --sysroot support,
3318 [gcc_cv_ld_sysroot=no
3319 if test $in_tree_ld = yes ; then
3320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3321 gcc_cv_ld_sysroot=yes
3323 elif test x$gcc_cv_ld != x; then
3324 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3325 gcc_cv_ld_sysroot=yes
3328 if test x"$gcc_cv_ld_sysroot" = xyes; then
3329 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3330 [Define if your linker supports --sysroot.])
3333 if test x$with_sysroot = x && test x$host = x$target \
3334 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3335 && test "$prefix" != "NONE"; then
3336 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3337 [Define to PREFIX/include if cpp should also search that directory.])
3340 # Test for stack protector support in target C library.
3341 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3342 gcc_cv_libc_provides_ssp,
3343 [gcc_cv_libc_provides_ssp=no
3346 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3347 if test "x$with_sysroot" = x; then
3348 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3349 elif test "x$with_build_sysroot" != "x"; then
3350 glibc_header_dir="${with_build_sysroot}/usr/include"
3351 elif test "x$with_sysroot" = xyes; then
3352 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3354 glibc_header_dir="${with_sysroot}/usr/include"
3357 glibc_header_dir=/usr/include
3359 # glibc 2.4 and later provides __stack_chk_fail and
3360 # either __stack_chk_guard, or TLS access to stack guard canary.
3361 if test -f $glibc_header_dir/features.h \
3362 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3363 $glibc_header_dir/features.h > /dev/null; then
3364 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3365 $glibc_header_dir/features.h > /dev/null; then
3366 gcc_cv_libc_provides_ssp=yes
3367 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3368 $glibc_header_dir/features.h > /dev/null \
3369 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3370 $glibc_header_dir/features.h > /dev/null; then
3371 gcc_cv_libc_provides_ssp=yes
3376 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3377 [echo "no __stack_chk_fail on this target"])
3379 *) gcc_cv_libc_provides_ssp=no ;;
3382 if test x$gcc_cv_libc_provides_ssp = xyes; then
3383 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3384 [Define if your target C library provides stack protector support])
3387 # Check if TFmode long double should be used by default or not.
3388 # Some glibc targets used DFmode long double, but with glibc 2.4
3389 # and later they can use TFmode.
3391 powerpc*-*-linux* | \
3396 AC_ARG_WITH(long-double-128,
3397 [ --with-long-double-128 Use 128-bit long double by default.],
3398 gcc_cv_target_ldbl128="$with_long_double_128",
3399 [gcc_cv_target_ldbl128=no
3400 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3401 if test "x$with_sysroot" = x; then
3402 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3403 elif test "x$with_build_sysroot" != "x"; then
3404 glibc_header_dir="${with_build_sysroot}/usr/include"
3405 elif test "x$with_sysroot" = xyes; then
3406 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3408 glibc_header_dir="${with_sysroot}/usr/include"
3411 glibc_header_dir=/usr/include
3414 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3415 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3416 && gcc_cv_target_ldbl128=yes
3421 if test x$gcc_cv_target_ldbl128 = xyes; then
3422 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3423 [Define if TFmode long double should be the default])
3426 # Find out what GC implementation we want, or may, use.
3428 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3436 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3439 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3444 echo "Using $GGC for garbage collection."
3446 # Use the system's zlib library.
3448 zlibinc="-I\$(srcdir)/../zlib"
3449 AC_ARG_WITH(system-zlib,
3450 [ --with-system-zlib use installed libz],
3457 dnl Very limited version of automake's enable-maintainer-mode
3459 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3460 dnl maintainer-mode is disabled by default
3461 AC_ARG_ENABLE(maintainer-mode,
3462 [ --enable-maintainer-mode
3463 enable make rules and dependencies not useful
3464 (and sometimes confusing) to the casual installer],
3465 maintainer_mode=$enableval,
3468 AC_MSG_RESULT($maintainer_mode)
3470 if test "$maintainer_mode" = "yes"; then
3481 # Make empty files to contain the specs and options for each language.
3482 # Then add #include lines to for a compiler that has specs and/or options.
3488 # These (without "all_") are set in each config-lang.in.
3489 # `language' must be a single word so is spelled singularly.
3492 all_outputs='Makefile gccbug libada-mk'
3493 # List of language makefile fragments.
3495 # List of language subdirectory makefiles. Deprecated.
3497 # Additional files for gengtype
3498 all_gtfiles="$target_gtfiles"
3500 # These are the languages that are set in --enable-languages,
3501 # and are available in the GCC tree.
3502 all_selected_languages=
3504 # Add the language fragments.
3505 # Languages are added via two mechanisms. Some information must be
3506 # recorded in makefile variables, these are defined in config-lang.in.
3507 # We accumulate them and plug them into the main Makefile.
3508 # The other mechanism is a set of hooks for each of the main targets
3509 # like `clean', `install', etc.
3511 language_hooks="Make-hooks"
3513 for lang in ${srcdir}/*/config-lang.in
3516 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3518 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3519 if test "x$lang_alias" = x
3521 echo "$lang doesn't set \$language." 1>&2
3524 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3525 subdirs="$subdirs $subdir"
3526 case ",$enable_languages," in
3528 all_selected_languages="$all_selected_languages $lang_alias"
3529 if test -f $srcdir/$subdir/lang-specs.h; then
3530 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3542 . ${srcdir}/$subdir/config-lang.in
3543 if test "x$language" = x
3545 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3550 case ",$enable_languages," in
3553 for i in $subdir_requires; do
3554 test -f "${srcdir}/$i/config-lang.in" && continue
3562 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3563 if test -f $srcdir/$subdir/lang.opt; then
3564 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3566 if test -f $srcdir/$subdir/$subdir-tree.def; then
3567 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3569 if test -f ${srcdir}/$subdir/Makefile.in
3570 then all_lang_makefiles="$subdir/Makefile"
3572 all_languages="$all_languages $language"
3573 all_compilers="$all_compilers $compilers"
3574 all_outputs="$all_outputs $outputs"
3575 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3578 # Pick up gtfiles for c
3580 . ${srcdir}/c-config-lang.in
3581 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3584 for language in $all_selected_languages
3586 check_languages="$check_languages check-$language"
3589 # We link each language in with a set of hooks, reached indirectly via
3590 # lang.${target}. Only do so for selected languages.
3594 target_list="all.cross start.encap rest.encap tags \
3595 install-common install-man install-info install-pdf dvi pdf \
3596 html uninstall info man srcextra srcman srcinfo \
3597 mostlyclean clean distclean maintainer-clean"
3599 for t in $target_list
3602 for lang in $all_selected_languages
3606 echo "lang.$t: $x" >> Make-hooks
3615 echo "dir ." > .gdbinit
3616 echo "dir ${srcdir}" >> .gdbinit
3617 if test x$gdb_needs_out_file_path = xyes
3619 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3621 if test "x$subdirs" != x; then
3624 echo "dir ${srcdir}/$s" >> .gdbinit
3627 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3629 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3630 AC_SUBST(gcc_tooldir)
3633 # Find a directory in which to install a shared libgcc.
3635 AC_ARG_ENABLE(version-specific-runtime-libs,
3636 [ --enable-version-specific-runtime-libs
3637 specify that runtime libraries should be
3638 installed in a compiler-specific directory])
3640 AC_ARG_WITH(slibdir,
3641 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3642 slibdir="$with_slibdir",
3643 if test "${enable_version_specific_runtime_libs+set}" = set; then
3644 slibdir='$(libsubdir)'
3645 elif test "$host" != "$target"; then
3646 slibdir='$(build_tooldir)/lib'
3652 objdir=`${PWDCMD-pwd}`
3655 AC_ARG_WITH(datarootdir,
3656 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3657 datarootdir="\${prefix}/$with_datarootdir",
3658 datarootdir='$(prefix)/share')
3659 AC_SUBST(datarootdir)
3662 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3663 docdir="\${prefix}/$with_docdir",
3664 docdir='$(datarootdir)')
3667 AC_ARG_WITH(htmldir,
3668 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3669 htmldir="\${prefix}/$with_htmldir",
3670 htmldir='$(docdir)')
3673 # Substitute configuration variables
3676 AC_SUBST(all_compilers)
3677 AC_SUBST(all_gtfiles)
3678 AC_SUBST(all_lang_makefrags)
3679 AC_SUBST(all_lang_makefiles)
3680 AC_SUBST(all_languages)
3681 AC_SUBST(all_selected_languages)
3682 AC_SUBST(build_exeext)
3683 AC_SUBST(build_install_headers_dir)
3684 AC_SUBST(build_xm_file_list)
3685 AC_SUBST(build_xm_include_list)
3686 AC_SUBST(build_xm_defines)
3687 AC_SUBST(check_languages)
3688 AC_SUBST(cpp_install_dir)
3689 AC_SUBST(xmake_file)
3690 AC_SUBST(tmake_file)
3691 AC_SUBST(extra_gcc_objs)
3692 AC_SUBST(extra_headers_list)
3693 AC_SUBST(extra_objs)
3694 AC_SUBST(extra_parts)
3695 AC_SUBST(extra_passes)
3696 AC_SUBST(extra_programs)
3697 AC_SUBST(float_h_file)
3698 AC_SUBST(gcc_config_arguments)
3699 AC_SUBST(gcc_gxx_include_dir)
3700 AC_SUBST(host_exeext)
3701 AC_SUBST(host_xm_file_list)
3702 AC_SUBST(host_xm_include_list)
3703 AC_SUBST(host_xm_defines)
3704 AC_SUBST(out_host_hook_obj)
3706 AC_SUBST(lang_opt_files)
3707 AC_SUBST(lang_specs_files)
3708 AC_SUBST(lang_tree_files)
3709 AC_SUBST(local_prefix)
3711 AC_SUBST(objc_boehm_gc)
3713 AC_SUBST(out_object_file)
3714 AC_SUBST(thread_file)
3715 AC_SUBST(tm_file_list)
3716 AC_SUBST(tm_include_list)
3717 AC_SUBST(tm_defines)
3718 AC_SUBST(tm_p_file_list)
3719 AC_SUBST(tm_p_include_list)
3720 AC_SUBST(xm_file_list)
3721 AC_SUBST(xm_include_list)
3722 AC_SUBST(xm_defines)
3723 AC_SUBST(c_target_objs)
3724 AC_SUBST(cxx_target_objs)
3725 AC_SUBST(target_cpu_default)
3727 AC_SUBST_FILE(language_hooks)
3730 if test x${build} = x${host} ; then
3731 if test x${host} = x${target} ; then
3732 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3734 echo "Links are now set up to build a cross-compiler" 1>&2
3735 echo " from ${host} to ${target}." 1>&2
3738 if test x${host} = x${target} ; then
3739 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3740 echo " for ${target}." 1>&2
3742 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3743 echo " from ${host} to ${target}." 1>&2
3747 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3748 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3750 # Configure the subdirectories
3751 # AC_CONFIG_SUBDIRS($subdirs)
3753 # Create the Makefile
3754 # and configure language subdirectories
3755 AC_CONFIG_FILES($all_outputs)
3757 AC_CONFIG_COMMANDS([default],
3759 case ${CONFIG_HEADERS} in
3760 *auto-host.h:config.in*)
3763 # Make sure all the subdirs exist.
3764 for d in $subdirs doc build
3766 test -d $d || mkdir $d
3769 [subdirs='$subdirs'])