2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008 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 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 # autoconf is lame and doesn't give us any substitution variable for this.
280 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
281 NO_MINUS_C_MINUS_O=yes
283 OUTPUT_OPTION='-o $@'
285 AC_SUBST(NO_MINUS_C_MINUS_O)
286 AC_SUBST(OUTPUT_OPTION)
288 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
289 # optimizations to be activated explicitly by the toplevel.
292 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
296 # -------------------------
297 # Check C compiler features
298 # -------------------------
303 # sizeof(char) is 1 by definition.
304 AC_CHECK_SIZEOF(void *)
305 AC_CHECK_SIZEOF(short)
307 AC_CHECK_SIZEOF(long)
308 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
309 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
311 # ---------------------
312 # Warnings and checking
313 # ---------------------
315 # Check $CC warning features (if it's GCC).
316 # We want to use -pedantic, but we don't want warnings about
320 # So, we only use -pedantic if we can disable those warnings.
322 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
323 -Wmissing-prototypes], [loose_warn])
324 ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
325 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
326 -Wmissing-format-attribute], [strict_warn])
327 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
328 -Wno-overlength-strings], [strict_warn])
329 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
331 # The above macros do nothing if the compiler is not GCC. However, the
332 # Makefile has more goo to add other flags, so this variabl is used to
333 # enables warnings only for GCC.
335 if test "x$GCC" = "xyes"; then
336 warn_cflags='$(GCC_WARN_CFLAGS)'
338 AC_SUBST(warn_cflags)
340 # Enable expensive internal checks
342 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
346 AC_ARG_ENABLE(checking,
347 [ --enable-checking[=LIST]
348 enable expensive run-time checks. With LIST,
349 enable only specific categories of checks.
350 Categories are: yes,no,all,none,release.
351 Flags are: assert,df,fold,gc,gcac,misc,
352 rtlflag,rtl,runtime,tree,valgrind,types.],
353 [ac_checking_flags="${enableval}"],[
354 # Determine the default checks.
355 if test x$is_release = x ; then
356 ac_checking_flags=yes
358 ac_checking_flags=release
360 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
361 for check in release $ac_checking_flags
364 # these set all the flags to specific states
365 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
366 ac_fold_checking= ; ac_gc_checking=1 ;
367 ac_gc_always_collect= ; ac_rtl_checking= ;
368 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
369 ac_tree_checking=1 ; ac_valgrind_checking= ;
370 ac_types_checking= ;;
371 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
372 ac_fold_checking= ; ac_gc_checking= ;
373 ac_gc_always_collect= ; ac_rtl_checking= ;
374 ac_rtlflag_checking= ; ac_runtime_checking= ;
375 ac_tree_checking= ; ac_valgrind_checking= ;
376 ac_types_checking= ;;
377 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
378 ac_fold_checking=1 ; ac_gc_checking=1 ;
379 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
380 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
381 ac_tree_checking=1 ; ac_valgrind_checking= ;
382 ac_types_checking=1 ;;
383 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
384 ac_fold_checking= ; ac_gc_checking= ;
385 ac_gc_always_collect= ; ac_rtl_checking= ;
386 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
387 ac_tree_checking= ; ac_valgrind_checking= ;
388 ac_types_checking= ;;
389 # these enable particular checks
390 assert) ac_assert_checking=1 ;;
391 df) ac_df_checking=1 ;;
392 fold) ac_fold_checking=1 ;;
393 gc) ac_gc_checking=1 ;;
394 gcac) ac_gc_always_collect=1 ;;
395 misc) ac_checking=1 ;;
396 rtl) ac_rtl_checking=1 ;;
397 rtlflag) ac_rtlflag_checking=1 ;;
398 runtime) ac_runtime_checking=1 ;;
399 tree) ac_tree_checking=1 ;;
400 types) ac_types_checking=1 ;;
401 valgrind) ac_valgrind_checking=1 ;;
402 *) AC_MSG_ERROR(unknown check category $check) ;;
408 if test x$ac_checking != x ; then
409 AC_DEFINE(ENABLE_CHECKING, 1,
410 [Define if you want more run-time sanity checks. This one gets a grab
411 bag of miscellaneous but relatively cheap checks.])
412 nocommon_flag=-fno-common
414 AC_SUBST(nocommon_flag)
415 if test x$ac_df_checking != x ; then
416 AC_DEFINE(ENABLE_DF_CHECKING, 1,
417 [Define if you want more run-time sanity checks for dataflow.])
419 if test x$ac_assert_checking != x ; then
420 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
421 [Define if you want assertions enabled. This is a cheap check.])
423 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
424 if test x$ac_runtime_checking != x ; then
425 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
426 [Define if you want runtime assertions enabled. This is a cheap check.])
428 if test x$ac_tree_checking != x ; then
429 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
430 [Define if you want all operations on trees (the basic data
431 structure of the front ends) to be checked for dynamic type safety
432 at runtime. This is moderately expensive. The tree browser debugging
433 routines will also be enabled by this option.
435 TREEBROWSER=tree-browser.o
437 if test x$ac_types_checking != x ; then
438 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
439 [Define if you want all gimple types to be verified after gimplifiation.
443 AC_SUBST(TREEBROWSER)
444 if test x$ac_rtl_checking != x ; then
445 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
446 [Define if you want all operations on RTL (the basic data structure
447 of the optimizer and back end) to be checked for dynamic type safety
448 at runtime. This is quite expensive.])
450 if test x$ac_rtlflag_checking != x ; then
451 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
452 [Define if you want RTL flag accesses to be checked against the RTL
453 codes that are supported for each access macro. This is relatively
456 if test x$ac_gc_checking != x ; then
457 AC_DEFINE(ENABLE_GC_CHECKING, 1,
458 [Define if you want the garbage collector to do object poisoning and
459 other memory allocation checks. This is quite expensive.])
461 if test x$ac_gc_always_collect != x ; then
462 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
463 [Define if you want the garbage collector to operate in maximally
464 paranoid mode, validating the entire heap and collecting garbage at
465 every opportunity. This is extremely expensive.])
467 if test x$ac_fold_checking != x ; then
468 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
469 [Define if you want fold checked that it never destructs its argument.
470 This is quite expensive.])
472 valgrind_path_defines=
475 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
476 dnl # an if statement. This was the source of very frustrating bugs
477 dnl # in converting to autoconf 2.5x!
478 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
480 if test x$ac_valgrind_checking != x ; then
481 # It is certainly possible that there's valgrind but no valgrind.h.
482 # GCC relies on making annotations so we must have both.
483 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
484 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
485 [[#include <valgrind/memcheck.h>
486 #ifndef VALGRIND_DISCARD
487 #error VALGRIND_DISCARD not defined
489 [gcc_cv_header_valgrind_memcheck_h=yes],
490 [gcc_cv_header_valgrind_memcheck_h=no])
491 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
492 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
493 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
494 [[#include <memcheck.h>
495 #ifndef VALGRIND_DISCARD
496 #error VALGRIND_DISCARD not defined
498 [gcc_cv_header_memcheck_h=yes],
499 [gcc_cv_header_memcheck_h=no])
500 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
501 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
502 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
503 if test "x$valgrind_path" = "x" \
504 || (test $have_valgrind_h = no \
505 && test $gcc_cv_header_memcheck_h = no \
506 && test $gcc_cv_header_valgrind_memcheck_h = no); then
507 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
509 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
510 valgrind_command="$valgrind_path -q"
511 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
512 [Define if you want to run subprograms and generated programs
513 through valgrind (a memory checker). This is extremely expensive.])
514 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
515 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
516 [Define if valgrind's valgrind/memcheck.h header is installed.])
518 if test $gcc_cv_header_memcheck_h = yes; then
519 AC_DEFINE(HAVE_MEMCHECK_H, 1,
520 [Define if valgrind's memcheck.h header is installed.])
523 AC_SUBST(valgrind_path_defines)
524 AC_SUBST(valgrind_command)
526 # Enable code coverage collection
527 AC_ARG_ENABLE(coverage,
528 [ --enable-coverage[=LEVEL]
529 enable compiler's code coverage collection.
530 Use to measure compiler performance and locate
531 unused parts of the compiler. With LEVEL, specify
532 optimization. Values are opt, noopt,
534 [case "${enableval}" in
536 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
539 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
542 # a.k.a. --disable-coverage
546 AC_MSG_ERROR(unknown coverage setting $enableval)
550 AC_SUBST(coverage_flags)
552 AC_ARG_ENABLE(gather-detailed-mem-stats,
553 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
554 [enable_gather_detailed_mem_stats=no])
555 if test x$enable_gather_detailed_mem_stats = xyes ; then
556 AC_DEFINE(GATHER_STATISTICS, 1,
557 [Define to enable detailed memory allocation stats gathering.])
560 # -------------------------------
561 # Miscenalleous configure options
562 # -------------------------------
566 [ --with-stabs arrange to use stabs instead of host debug format],
570 # Determine whether or not multilibs are enabled.
571 AC_ARG_ENABLE(multilib,
572 [ --enable-multilib enable library support for multiple ABIs],
573 [], [enable_multilib=yes])
574 AC_SUBST(enable_multilib)
576 # Enable __cxa_atexit for C++.
577 AC_ARG_ENABLE(__cxa_atexit,
578 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
581 # Enable C extension for decimal float if target supports it.
582 AC_ARG_ENABLE(decimal-float,
583 [ --enable-decimal-float={no,yes,bid,dpd}
584 enable decimal float extension to C. Selecting 'bid'
585 or 'dpd' choses which decimal floating point format
588 case $enable_decimal_float in
589 yes | no | bid | dpd) ;;
590 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
591 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
596 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
597 enable_decimal_float=yes
600 AC_MSG_WARN(decimal float is not supported for this target, ignored)
601 enable_decimal_float=no
606 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
607 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
608 [Define to 1 to enable decimal float extension to C.])
610 # x86's use BID format instead of DPD
611 case x$enable_decimal_float in
614 i?86*-*-linux* | x86_64*-*-linux*)
615 enable_decimal_float=bid
618 enable_decimal_float=dpd
623 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
624 # dependency on libdecnumber.
625 enable_decimal_float=dpd
628 AC_SUBST(enable_decimal_float)
630 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
631 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
632 [Define to 1 to specify that we are using the BID decimal floating
633 point format instead of DPD])
635 # Enable C extension for fixed-point arithmetic.
636 AC_ARG_ENABLE(fixed-point,
637 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
645 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
646 enable_fixed_point=no
649 enable_fixed_point=yes
654 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
655 enable_fixed_point=no
659 AC_SUBST(enable_fixed_point)
661 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
662 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
663 [Define to 1 to enable fixed-point arithmetic extension to C.])
666 # Pass with no value to take the default
667 # Pass with a value to specify a thread package
668 AC_ARG_ENABLE(threads,
669 [ --enable-threads enable thread usage for target GCC
670 --enable-threads=LIB use LIB thread package for target GCC],,
674 [ --enable-tls enable or disable generation of tls code
675 overriding the assembler check for tls support],
679 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
680 Valid choices are 'yes' and 'no'.]) ;;
684 AC_ARG_ENABLE(objc-gc,
685 [ --enable-objc-gc enable the use of Boehm's garbage collector with
686 the GNU Objective-C runtime],
687 if test x$enable_objc_gc = xno; then
695 [ --with-dwarf2 force the default debug format to be DWARF 2],
696 dwarf2="$with_dwarf2",
699 AC_ARG_ENABLE(shared,
700 [ --disable-shared don't provide a shared libgcc],
702 case $enable_shared in
706 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
707 for pkg in $enableval; do
708 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
715 ], [enable_shared=yes])
716 AC_SUBST(enable_shared)
718 AC_ARG_WITH(build-sysroot,
719 [ --with-build-sysroot=sysroot
720 use sysroot as the system root during the build])
723 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
725 case ${with_sysroot} in
726 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
727 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
730 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
731 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
733 if test "x$prefix" = xNONE; then
734 test_prefix=/usr/local
738 if test "x$exec_prefix" = xNONE; then
739 test_exec_prefix=$test_prefix
741 test_exec_prefix=$exec_prefix
743 case ${TARGET_SYSTEM_ROOT} in
744 "${test_prefix}"|"${test_prefix}/"*|\
745 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
746 '${prefix}'|'${prefix}/'*|\
747 '${exec_prefix}'|'${exec_prefix}/'*)
748 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
749 TARGET_SYSTEM_ROOT_DEFINE="$t"
754 TARGET_SYSTEM_ROOT_DEFINE=
755 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
757 AC_SUBST(TARGET_SYSTEM_ROOT)
758 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
759 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
761 # Build with intermodule optimisations
762 AC_ARG_ENABLE(intermodule,
763 [ --enable-intermodule build the compiler in one step],
764 [case ${enable_intermodule} in
765 yes) onestep="-onestep";;
771 ACX_PKGVERSION([GCC])
772 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
774 # Sanity check enable_languages in case someone does not run the toplevel
775 # configure # script.
776 AC_ARG_ENABLE(languages,
777 [ --enable-languages=LIST specify which front-ends to build],
778 [case ,${enable_languages}, in
780 # go safe -- we cannot be much sure without the toplevel
782 # analysis of which target libs are present and usable
786 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
791 enable_languages=c,${enable_languages}
794 [enable_languages=c])
796 # Used by documentation targets
797 AC_SUBST(datarootdir)
801 # -------------------------
802 # Checks for other programs
803 # -------------------------
807 # Find some useful tools
809 # We need awk to create options.c and options.h.
810 # Bail out if it's missing.
812 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
820 # By default, the Darwin ranlib will not treat common symbols as
821 # definitions when building the archive table of contents. Other
822 # ranlibs do that; pass an option to the Darwin ranlib that makes
823 # it behave similarly.
829 AC_SUBST(ranlib_flags)
833 # See if cmp has --ignore-initial.
834 gcc_AC_PROG_CMP_IGNORE_INITIAL
836 # See if we have the mktemp command.
837 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
839 # See if makeinfo has been installed and is modern enough
840 # that we can use it.
841 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
842 [GNU texinfo.* \([0-9][0-9.]*\)],
843 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
844 if test $gcc_cv_prog_makeinfo_modern = no; then
846 *** Makeinfo is missing or too old.
847 *** Info documentation will not be built.])
854 # Is pod2man recent enough to regenerate manpages?
855 AC_MSG_CHECKING([for recent Pod::Man])
856 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
858 GENERATED_MANPAGES=generated-manpages
863 AC_SUBST(GENERATED_MANPAGES)
865 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
868 dnl Don't use AC_PROG_LEX; we insist on flex.
869 dnl LEXLIB is not useful in gcc.
870 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
873 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
875 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
876 # check for build == host before using them.
879 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
880 && test -d ../binutils ; then
881 NM='$(objdir)/../binutils/nm-new'
883 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
887 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
888 && test -d ../binutils ; then
889 AR='$(objdir)/../binutils/ar'
891 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
895 # --------------------
896 # Checks for C headers
897 # --------------------
899 AC_MSG_CHECKING(for GNU C library)
900 AC_CACHE_VAL(gcc_cv_glibc,
901 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
902 [[#include <features.h>]], [[
903 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
904 #error Not a GNU C library system
908 AC_MSG_RESULT($gcc_cv_glibc)
909 if test $gcc_cv_glibc = yes; then
910 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
913 # Need to reject headers which give warnings, so that the -Werror bootstrap
914 # works later. *sigh* This needs to come before all header checks.
921 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
922 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
923 sys/resource.h sys/param.h sys/times.h sys/stat.h \
924 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
926 # Check for thread headers.
927 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
928 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
930 # These tests can't be done till we know if we have limits.h.
939 # These libraries may be used by collect2.
940 # We may need a special search path to get them linked.
941 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
943 for libs in '' -lld -lmld \
944 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
945 '-L/usr/lib/cmplrs/cc3.11 -lmld'
948 AC_TRY_LINK_FUNC(ldopen,
949 [gcc_cv_collect2_libs="$libs"; break])
952 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
953 case $gcc_cv_collect2_libs in
955 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
957 AC_SUBST(COLLECT2_LIBS)
959 # When building Ada code on Alpha, we need exc_resume which is usually in
960 # -lexc. So test for it.
963 AC_SEARCH_LIBS(exc_resume, exc)
966 AC_SUBST(GNAT_LIBEXC)
968 # Some systems put ldexp and frexp in libm instead of libc; assume
969 # they're both in the same place. jcf-dump needs them.
972 AC_SEARCH_LIBS(ldexp, m)
977 # Use <inttypes.h> only if it exists,
978 # doesn't clash with <sys/types.h>, and declares intmax_t.
979 AC_MSG_CHECKING(for inttypes.h)
980 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
981 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
982 [[#include <sys/types.h>
983 #include <inttypes.h>]],
984 [[intmax_t i = -1;]])],
985 [gcc_cv_header_inttypes_h=yes],
986 [gcc_cv_header_inttypes_h=no])])
987 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
988 if test $gcc_cv_header_inttypes_h = yes; then
989 AC_DEFINE(HAVE_INTTYPES_H, 1,
990 [Define if you have a working <inttypes.h> header file.])
993 dnl Disabled until we have a complete test for buggy enum bitfields.
994 dnl gcc_AC_C_ENUM_BF_UNSIGNED
996 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
997 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
998 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
999 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1000 putchar_unlocked putc_unlocked)
1001 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1002 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1003 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1006 if test x$ac_cv_func_mbstowcs = xyes; then
1007 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1008 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1014 [gcc_cv_func_mbstowcs_works=yes],
1015 [gcc_cv_func_mbstowcs_works=no],
1016 [gcc_cv_func_mbstowcs_works=yes])])
1017 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1018 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1019 [Define this macro if mbstowcs does not crash when its
1020 first argument is NULL.])
1024 AC_CHECK_TYPE(ssize_t, int)
1026 # Try to determine the array type of the second argument of getgroups
1027 # for the target system (int or gid_t).
1029 if test "${target}" = "${build}"; then
1030 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1033 # This condition may need some tweaking. It should include all
1034 # targets where the array type of the second argument of getgroups
1035 # is int and the type of gid_t is not equivalent to int.
1036 *-*-sunos* | *-*-ultrix*)
1037 TARGET_GETGROUPS_T=int
1040 TARGET_GETGROUPS_T=gid_t
1044 AC_SUBST(TARGET_GETGROUPS_T)
1046 gcc_AC_FUNC_MMAP_BLACKLIST
1050 # Under VMS, vfork works very differently than on Unix. The standard test
1051 # won't work, and it isn't easily adaptable. It makes more sense to
1053 ac_cv_func_vfork_works=yes
1059 # Until we have in-tree GNU iconv:
1061 AC_SUBST(LIBICONV_DEP)
1067 # We will need to find libiberty.h and ansidecl.h
1068 saved_CFLAGS="$CFLAGS"
1069 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1070 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1071 strsignal strstr strverscmp \
1072 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1073 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1074 #include "ansidecl.h"
1075 #include "system.h"])
1077 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1078 #include "ansidecl.h"
1080 #ifdef HAVE_SYS_RESOURCE_H
1081 #include <sys/resource.h>
1085 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1086 #include "ansidecl.h"
1088 #ifdef HAVE_SYS_RESOURCE_H
1089 #include <sys/resource.h>
1091 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1092 [Define to \`long' if <sys/resource.h> doesn't define.])])
1094 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1095 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1096 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1097 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1098 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1099 #include "ansidecl.h"
1108 gcc_AC_CHECK_DECLS(times, , ,[
1109 #include "ansidecl.h"
1111 #ifdef HAVE_SYS_TIMES_H
1112 #include <sys/times.h>
1116 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1117 #include "ansidecl.h"
1122 # More time-related stuff.
1123 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1124 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1125 #include "ansidecl.h"
1127 #ifdef HAVE_SYS_TIMES_H
1128 #include <sys/times.h>
1130 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1131 if test $ac_cv_struct_tms = yes; then
1132 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1133 [Define if <sys/times.h> defines struct tms.])
1136 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1137 # revisit after autoconf 2.50.
1138 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1139 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1140 #include "ansidecl.h"
1142 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1143 if test $gcc_cv_type_clock_t = yes; then
1144 AC_DEFINE(HAVE_CLOCK_T, 1,
1145 [Define if <time.h> defines clock_t.])
1148 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1149 CFLAGS="$saved_CFLAGS"
1151 gcc_AC_INITFINI_ARRAY
1153 # mkdir takes a single argument on some systems.
1154 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1162 # With Setjmp/Longjmp based exception handling.
1163 AC_ARG_ENABLE(sjlj-exceptions,
1164 [ --enable-sjlj-exceptions
1165 arrange to use setjmp/longjmp exception handling],
1168 if test $enableval != yes; then
1169 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1174 force_sjlj_exceptions=yes],
1177 force_sjlj_exceptions=yes
1181 force_sjlj_exceptions=no
1184 if test $force_sjlj_exceptions = yes; then
1185 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1186 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1187 [Define 0/1 to force the choice for exception handling model.])
1190 # For platforms with the unwind ABI which includes an unwind library,
1191 # libunwind, we can choose to use the system libunwind.
1192 AC_ARG_WITH(system-libunwind,
1193 [ --with-system-libunwind use installed libunwind])
1195 # config.gcc also contains tests of with_system_libunwind.
1196 if test x$with_system_libunwind = xyes; then
1197 AC_DEFINE(HAVE_GETIPINFO, 1,
1198 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1201 # --------------------------------------------------------
1202 # Build, host, and target specific configuration fragments
1203 # --------------------------------------------------------
1205 # Collect build-machine-specific information.
1206 . ${srcdir}/config.build
1208 # Collect host-machine-specific information.
1209 . ${srcdir}/config.host
1213 # Collect target-machine-specific information.
1214 . ${srcdir}/config.gcc
1216 extra_objs="${host_extra_objs} ${extra_objs}"
1217 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1219 # Default the target-machine variables that were not explicitly set.
1220 if test x"$tm_file" = x
1221 then tm_file=$cpu_type/$cpu_type.h; fi
1223 if test x"$extra_headers" = x
1224 then extra_headers=; fi
1226 if test x$md_file = x
1227 then md_file=$cpu_type/$cpu_type.md; fi
1229 if test x$out_file = x
1230 then out_file=$cpu_type/$cpu_type.c; fi
1232 if test x"$tmake_file" = x
1233 then tmake_file=$cpu_type/t-$cpu_type
1236 if test x"$dwarf2" = xyes
1237 then tm_file="$tm_file tm-dwarf2.h"
1240 # Say what files are being used for the output code and MD file.
1241 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1242 echo "Using \`$srcdir/config/$md_file' as machine description file."
1244 # If any of the xm_file variables contain nonexistent files, warn
1245 # about them and drop them.
1248 for x in $build_xm_file; do
1249 if test -f $srcdir/config/$x
1251 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1257 for x in $host_xm_file; do
1258 if test -f $srcdir/config/$x
1260 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1266 for x in $xm_file; do
1267 if test -f $srcdir/config/$x
1269 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1275 for f in $tm_file; do
1278 if test $count = ax; then
1279 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1281 echo "Using the following target machine macro files:"
1282 for f in $tm_file; do
1283 echo " $srcdir/config/$f"
1287 if test x$need_64bit_hwint = xyes; then
1288 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1289 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1292 if test x$use_long_long_for_widest_fast_int = xyes; then
1293 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1294 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1295 efficiently supported by the host hardware.])
1299 for f in $host_xm_file; do
1302 if test $count = a; then
1304 elif test $count = ax; then
1305 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1307 echo "Using the following host machine macro files:"
1308 for f in $host_xm_file; do
1309 echo " $srcdir/config/$f"
1312 echo "Using ${out_host_hook_obj} for host machine hooks."
1314 if test "$host_xm_file" != "$build_xm_file"; then
1316 for f in $build_xm_file; do
1319 if test $count = a; then
1321 elif test $count = ax; then
1322 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1324 echo "Using the following build machine macro files:"
1325 for f in $build_xm_file; do
1326 echo " $srcdir/config/$f"
1333 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1334 gcc_cv_mcontext_underscores,
1336 #include <sys/cdefs.h>
1337 #include <sys/signal.h>
1338 #include <ucontext.h>
1339 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1341 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1342 if test $gcc_cv_mcontext_underscores = yes; then
1343 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1344 [mcontext_t fields start with __])
1353 # Check if a valid thread package
1354 case ${enable_threads} in
1357 target_thread_file='single'
1361 target_thread_file='single'
1363 aix | dce | gnat | irix | posix | posix95 | rtems | \
1364 single | solaris | vxworks | win32 | mipssde)
1365 target_thread_file=${enable_threads}
1368 echo "${enable_threads} is an unknown thread package" 1>&2
1373 if test x${thread_file} = x; then
1374 # No thread file set by target-specific clauses in config.gcc,
1375 # so use file chosen by default logic above
1376 thread_file=${target_thread_file}
1379 # Make gthr-default.h if we have a thread file.
1381 if test $thread_file != single; then
1382 rm -f gthr-default.h
1383 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1384 gthread_flags=-DHAVE_GTHR_DEFAULT
1386 AC_SUBST(gthread_flags)
1393 if test x$enable___cxa_atexit = xyes || \
1394 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1395 if test x$host = x$target; then
1397 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1398 # keyed to flag_use_cxa_atexit
1403 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1404 [echo "__cxa_atexit can't be enabled on this target"])
1408 # We can't check for __cxa_atexit when building a cross, so assume
1412 if test x$use_cxa_atexit = xyes; then
1413 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1414 [Define if you want to use __cxa_atexit, rather than atexit, to
1415 register C++ destructors for local statics and global objects.
1416 This is essential for fully standards-compliant handling of
1417 destructors, but requires __cxa_atexit in libc.])
1422 if test x$with_system_libunwind = xyes; then
1423 if test x$host = x$target; then
1424 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1427 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1428 if test x$use_getipinfo = xyes; then
1429 AC_DEFINE(HAVE_GETIPINFO, 1,
1430 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1432 echo "The system unwind library does not support _Unwind_GetIPInfo."
1435 # Look for a file containing extra machine modes.
1436 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1437 extra_modes_file='$(srcdir)'/config/${extra_modes}
1438 AC_SUBST(extra_modes_file)
1439 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1440 [Define to the name of a file containing a list of extra machine modes
1441 for this architecture.])
1444 # Convert extra_options into a form suitable for Makefile use.
1446 for f in $extra_options; do
1447 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1449 AC_SUBST(extra_opt_files)
1451 # auto-host.h is the file containing items generated by autoconf and is
1452 # the first file included by config.h.
1453 # If host=build, it is correct to have bconfig include auto-host.h
1454 # as well. If host!=build, we are in error and need to do more
1455 # work to find out the build config parameters.
1456 if test x$host = x$build
1458 build_auto=auto-host.h
1460 # We create a subdir, then run autoconf in the subdir.
1461 # To prevent recursion we set host and build for the new
1462 # invocation of configure to the build for this invocation
1469 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1470 *) realsrcdir=../${srcdir};;
1472 saved_CFLAGS="${CFLAGS}"
1473 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1474 ${realsrcdir}/configure \
1475 --enable-languages=${enable_languages-all} \
1476 --target=$target_alias --host=$build_alias --build=$build_alias
1477 CFLAGS="${saved_CFLAGS}"
1479 # We just finished tests for the build machine, so rename
1480 # the file auto-build.h in the gcc directory.
1481 mv auto-host.h ../auto-build.h
1484 build_auto=auto-build.h
1486 AC_SUBST(build_subdir)
1488 tm_file="${tm_file} defaults.h"
1489 tm_p_file="${tm_p_file} tm-preds.h"
1490 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1491 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1492 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1493 # put this back in temporarily.
1494 xm_file="auto-host.h ansidecl.h ${xm_file}"
1501 # Compile in configure arguments.
1502 if test -f configargs.h ; then
1503 # Being re-configured.
1504 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1505 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1507 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1510 # Double all backslashes and backslash all quotes to turn
1511 # gcc_config_arguments into a C string.
1512 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1513 $gcc_config_arguments
1515 gcc_config_arguments_str=`cat conftest.out`
1518 cat > configargs.h <<EOF
1519 /* Generated automatically. */
1520 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1521 static const char thread_model[] = "$thread_file";
1523 static const struct {
1524 const char *name, *value;
1525 } configure_default_options[] = $configure_default_options;
1529 # Internationalization
1530 ZW_GNU_GETTEXT_SISTER_DIR
1532 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1533 # -liconv on the link line twice.
1534 case "$LIBINTL" in *$LIBICONV*)
1538 AC_ARG_ENABLE(secureplt,
1539 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1542 # Windows32 Registry support for specifying GCC installation paths.
1543 AC_ARG_ENABLE(win32-registry,
1544 [ --disable-win32-registry
1545 disable lookup of installation paths in the
1546 Registry on Windows hosts
1547 --enable-win32-registry enable registry lookup (default)
1548 --enable-win32-registry=KEY
1549 use KEY instead of GCC version as the last portion
1550 of the registry key],,)
1553 win32 | pe | cygwin* | mingw32* | uwin*)
1554 if test "x$enable_win32_registry" != xno; then
1555 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1558 if test "x$enable_win32_registry" != xno; then
1559 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1560 [Define to 1 if installation paths should be looked up in the Windows
1561 Registry. Ignored on non-Windows hosts.])
1563 if test "x$enable_win32_registry" != xyes \
1564 && test "x$enable_win32_registry" != x; then
1565 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1566 [Define to be the last component of the Windows registry key under which
1567 to look for installation paths. The full key used will be
1568 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1569 The default is the GCC version number.])
1575 # Get an absolute path to the GCC top-level source directory
1576 holddir=`${PWDCMD-pwd}`
1578 topdir=`${PWDCMD-pwd}`
1581 # Conditionalize the makefile for this host machine.
1583 for f in ${host_xmake_file}
1585 if test -f ${srcdir}/config/$f
1587 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1591 # Conditionalize the makefile for this target machine.
1593 for f in ${tmake_file}
1595 if test -f ${srcdir}/config/$f
1597 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1600 tmake_file="${tmake_file_}"
1602 # This is a terrible hack which will go away some day.
1603 host_cc_for_libada=${CC}
1604 AC_SUBST(host_cc_for_libada)
1606 out_object_file=`basename $out_file .c`.o
1608 tm_file_list="options.h"
1609 tm_include_list="options.h"
1610 for f in $tm_file; do
1613 f=`echo $f | sed 's/^..//'`
1614 tm_file_list="${tm_file_list} $f"
1615 tm_include_list="${tm_include_list} $f"
1618 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1619 tm_include_list="${tm_include_list} $f"
1622 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1623 tm_include_list="${tm_include_list} config/$f"
1630 for f in $tm_p_file; do
1633 tm_p_file_list="${tm_p_file_list} $f"
1634 tm_p_include_list="${tm_p_include_list} $f"
1637 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1638 tm_p_include_list="${tm_p_include_list} config/$f"
1644 for f in $xm_file; do
1647 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1648 xm_include_list="${xm_include_list} $f"
1651 xm_file_list="${xm_file_list} $f"
1652 xm_include_list="${xm_include_list} $f"
1655 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1656 xm_include_list="${xm_include_list} config/$f"
1662 host_xm_include_list=
1663 for f in $host_xm_file; do
1666 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1667 host_xm_include_list="${host_xm_include_list} $f"
1670 host_xm_file_list="${host_xm_file_list} $f"
1671 host_xm_include_list="${host_xm_include_list} $f"
1674 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1675 host_xm_include_list="${host_xm_include_list} config/$f"
1681 for f in $build_xm_file; do
1684 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1685 build_xm_include_list="${build_xm_include_list} $f"
1687 auto-build.h | auto-host.h )
1688 build_xm_file_list="${build_xm_file_list} $f"
1689 build_xm_include_list="${build_xm_include_list} $f"
1692 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1693 build_xm_include_list="${build_xm_include_list} config/$f"
1698 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1699 # cross-compiler which does not use the native headers and libraries.
1700 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1701 CROSS= AC_SUBST(CROSS)
1702 ALL=all.internal AC_SUBST(ALL)
1703 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1705 if test "x$with_build_sysroot" != x; then
1706 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1708 # This value is used, even on a native system, because
1709 # CROSS_SYSTEM_HEADER_DIR is just
1710 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1711 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1714 if test x$host != x$target
1716 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1718 SYSTEM_HEADER_DIR=$build_system_header_dir
1719 case "$host","$target" in
1720 # Darwin crosses can use the host system's libraries and headers,
1721 # because of the fat library support. Of course, it must be the
1722 # same version of Darwin on both sides. Allow the user to
1723 # just say --target=foo-darwin without a version number to mean
1724 # "the version on this system".
1725 *-*-darwin*,*-*-darwin*)
1726 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1727 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1728 if test $hostos = $targetos -o $targetos = darwin ; then
1730 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1735 i?86-*-*,x86_64-*-* \
1736 | powerpc*-*-*,powerpc64*-*-*)
1737 CROSS="$CROSS -DNATIVE_CROSS" ;;
1739 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1740 SYSTEM_HEADER_DIR=$build_system_header_dir
1743 # If this is a cross-compiler that does not
1744 # have its own set of headers then define
1747 # If this is using newlib, without having the headers available now,
1748 # then define inhibit_libc in LIBGCC2_CFLAGS.
1749 # This prevents libgcc2 from containing any code which requires libc
1752 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1753 test x$with_newlib = xyes ; } &&
1754 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1757 AC_SUBST(inhibit_libc)
1759 # When building gcc with a cross-compiler, we need to adjust things so
1760 # that the generator programs are still built with the native compiler.
1761 # Also, we cannot run fixincludes or fix-header.
1763 # These are the normal (build=host) settings:
1764 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1765 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1766 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1768 # Possibly disable fixproto, on a per-target basis.
1769 case ${use_fixproto} in
1774 STMP_FIXPROTO=stmp-fixproto
1777 AC_SUBST(STMP_FIXPROTO)
1779 # And these apply if build != host, or we are generating coverage data
1780 if test x$build != x$host || test "x$coverage_flags" != x
1782 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1784 if test "x$TARGET_SYSTEM_ROOT" = x; then
1785 if test "x$STMP_FIXPROTO" != x; then
1786 STMP_FIXPROTO=stmp-install-fixproto
1791 # Expand extra_headers to include complete path.
1792 # This substitutes for lots of t-* files.
1794 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1795 for file in ${extra_headers} ; do
1796 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1799 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1800 if test x"$use_gcc_tgmath" = xyes
1801 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1804 # Define collect2 in Makefile.
1805 case $host_can_use_collect2 in
1807 *) collect2='collect2$(exeext)' ;;
1809 AC_SUBST([collect2])
1811 # Add a definition of USE_COLLECT2 if system wants one.
1812 case $use_collect2 in
1813 no) use_collect2= ;;
1816 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1817 xm_defines="${xm_defines} USE_COLLECT2"
1818 case $host_can_use_collect2 in
1820 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1826 # ---------------------------
1827 # Assembler & linker features
1828 # ---------------------------
1830 # Identify the assembler which will work hand-in-glove with the newly
1831 # built GCC, so that we can examine its features. This is the assembler
1832 # which will be driven by the driver program.
1834 # If build != host, and we aren't building gas in-tree, we identify a
1835 # build->target assembler and hope that it will have the same features
1836 # as the host->target assembler we'll be using.
1837 gcc_cv_gas_major_version=
1838 gcc_cv_gas_minor_version=
1839 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1841 m4_pattern_allow([AS_FOR_TARGET])dnl
1842 AS_VAR_SET_IF(gcc_cv_as,, [
1843 if test -x "$DEFAULT_ASSEMBLER"; then
1844 gcc_cv_as="$DEFAULT_ASSEMBLER"
1845 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1846 && test -f ../gas/Makefile \
1847 && test x$build = x$host; then
1848 gcc_cv_as=../gas/as-new$build_exeext
1849 elif test -x as$build_exeext; then
1850 # Build using assembler in the current directory.
1851 gcc_cv_as=./as$build_exeext
1852 elif test -x $AS_FOR_TARGET; then
1853 gcc_cv_as="$AS_FOR_TARGET"
1855 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1858 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1859 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1860 case "$ORIGINAL_AS_FOR_TARGET" in
1861 ./as | ./as$build_exeext) ;;
1862 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1865 AC_MSG_CHECKING(what assembler to use)
1866 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1867 # Single tree build which includes gas. We want to prefer it
1868 # over whatever linker top-level may have detected, since
1869 # we'll use what we're building after installation anyway.
1870 AC_MSG_RESULT(newly built gas)
1872 _gcc_COMPUTE_GAS_VERSION
1873 in_tree_gas_is_elf=no
1874 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1875 || (grep 'obj_format = multi' ../gas/Makefile \
1876 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1878 in_tree_gas_is_elf=yes
1881 AC_MSG_RESULT($gcc_cv_as)
1885 # Identify the linker which will work hand-in-glove with the newly
1886 # built GCC, so that we can examine its features. This is the linker
1887 # which will be driven by the driver program.
1889 # If build != host, and we aren't building gas in-tree, we identify a
1890 # build->target linker and hope that it will have the same features
1891 # as the host->target linker we'll be using.
1892 gcc_cv_gld_major_version=
1893 gcc_cv_gld_minor_version=
1894 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1895 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1897 AS_VAR_SET_IF(gcc_cv_ld,, [
1898 if test -x "$DEFAULT_LINKER"; then
1899 gcc_cv_ld="$DEFAULT_LINKER"
1900 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1901 && test -f ../ld/Makefile \
1902 && test x$build = x$host; then
1903 gcc_cv_ld=../ld/ld-new$build_exeext
1904 elif test -x collect-ld$build_exeext; then
1905 # Build using linker in the current directory.
1906 gcc_cv_ld=./collect-ld$build_exeext
1907 elif test -x $LD_FOR_TARGET; then
1908 gcc_cv_ld="$LD_FOR_TARGET"
1910 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1913 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1914 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1915 case "$ORIGINAL_LD_FOR_TARGET" in
1916 ./collect-ld | ./collect-ld$build_exeext) ;;
1917 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1920 AC_MSG_CHECKING(what linker to use)
1921 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1922 # Single tree build which includes ld. We want to prefer it
1923 # over whatever linker top-level may have detected, since
1924 # we'll use what we're building after installation anyway.
1925 AC_MSG_RESULT(newly built ld)
1927 in_tree_ld_is_elf=no
1928 if (grep 'EMUL = .*elf' ../ld/Makefile \
1929 || grep 'EMUL = .*linux' ../ld/Makefile \
1930 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1931 in_tree_ld_is_elf=yes
1933 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
1936 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1937 if test x$gcc_cv_gld_version != x; then
1941 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1942 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1945 AC_MSG_RESULT($gcc_cv_ld)
1949 # Figure out what nm we will be using.
1950 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1951 AS_VAR_SET_IF(gcc_cv_nm,, [
1952 if test -f $gcc_cv_binutils_srcdir/configure.in \
1953 && test -f ../binutils/Makefile \
1954 && test x$build = x$host; then
1955 gcc_cv_nm=../binutils/nm-new$build_exeext
1956 elif test -x nm$build_exeext; then
1957 gcc_cv_nm=./nm$build_exeext
1958 elif test -x $NM_FOR_TARGET; then
1959 gcc_cv_nm="$NM_FOR_TARGET"
1961 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1964 AC_MSG_CHECKING(what nm to use)
1965 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1966 # Single tree build which includes binutils.
1967 AC_MSG_RESULT(newly built nm)
1970 AC_MSG_RESULT($gcc_cv_nm)
1974 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1975 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1976 case "$ORIGINAL_NM_FOR_TARGET" in
1977 ./nm | ./nm$build_exeext) ;;
1978 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1982 # Figure out what objdump we will be using.
1983 AS_VAR_SET_IF(gcc_cv_objdump,, [
1984 if test -f $gcc_cv_binutils_srcdir/configure.in \
1985 && test -f ../binutils/Makefile \
1986 && test x$build = x$host; then
1987 # Single tree build which includes binutils.
1988 gcc_cv_objdump=../binutils/objdump$build_exeext
1989 elif test -x objdump$build_exeext; then
1990 gcc_cv_objdump=./objdump$build_exeext
1991 elif test -x $OBJDUMP_FOR_TARGET; then
1992 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1994 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1997 AC_MSG_CHECKING(what objdump to use)
1998 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1999 # Single tree build which includes binutils.
2000 AC_MSG_RESULT(newly built objdump)
2001 elif test x$gcc_cv_objdump = x; then
2002 AC_MSG_RESULT(not found)
2004 AC_MSG_RESULT($gcc_cv_objdump)
2007 # Figure out what assembler alignment features are present.
2008 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2012 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2013 [Define if your assembler supports .balign and .p2align.])])
2015 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2018 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2019 [Define if your assembler supports specifying the maximum number
2020 of bytes to skip when using the GAS .p2align command.])])
2022 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2025 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2026 [Define if your assembler supports .literal16.])])
2028 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2030 [conftest_label1: .word 0
2032 conftest_label2: .word 0
2034 [if test x$gcc_cv_nm != x; then
2035 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2036 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2037 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2039 else gcc_cv_as_subsection_m1=yes
2041 rm -f conftest.nm1 conftest.nm2
2043 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2044 [Define if your assembler supports .subsection and .subsection -1 starts
2045 emitting at the beginning of your section.])])
2047 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2050 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2052 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2054 [ .weakref foobar, barfnot],,
2055 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2057 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2060 .NSUBSPA $CODE$,COMDAT],,
2061 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2063 # .hidden needs to be supported in both the assembler and the linker,
2064 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2065 # This is irritatingly difficult to feature test for; we have to check the
2066 # date string after the version number. If we've got an in-tree
2067 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2069 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2070 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2075 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2076 [if test $in_tree_ld = yes ; then
2078 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2079 && test $in_tree_ld_is_elf = yes; then
2080 gcc_cv_ld_hidden=yes
2083 gcc_cv_ld_hidden=yes
2084 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2085 if echo "$ld_ver" | grep GNU > /dev/null; then
2087 ld_vers=`echo $ld_ver | sed -n \
2088 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2089 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2090 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2091 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2092 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2093 if test 0"$ld_date" -lt 20020404; then
2094 if test -n "$ld_date"; then
2095 # If there was date string, but was earlier than 2002-04-04, fail
2097 elif test -z "$ld_vers"; then
2098 # If there was no date string nor ld version number, something is wrong
2101 test -z "$ld_vers_patch" && ld_vers_patch=0
2102 if test "$ld_vers_major" -lt 2; then
2104 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2105 gcc_cv_ld_hidden="no"
2106 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2114 hppa64*-*-hpux* | ia64*-*-hpux*)
2115 gcc_cv_ld_hidden=yes
2123 libgcc_visibility=no
2124 AC_SUBST(libgcc_visibility)
2125 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2126 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2127 libgcc_visibility=yes
2128 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2129 [Define if your assembler and linker support .hidden.])
2132 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2133 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2141 [# GAS versions before 2.11 do not support uleb128,
2142 # despite appearing to.
2143 # ??? There exists an elf-specific test that will crash
2144 # the assembler. Perhaps it's better to figure out whether
2145 # arbitrary sections are supported and try the test.
2146 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2147 if echo "$as_ver" | grep GNU > /dev/null; then
2149 as_vers=`echo $as_ver | sed -n \
2150 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2151 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2152 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2154 if test $as_major -eq 2 && test $as_minor -lt 11
2156 else gcc_cv_as_leb128=yes
2159 [AC_DEFINE(HAVE_AS_LEB128, 1,
2160 [Define if your assembler supports .sleb128 and .uleb128.])])
2162 # GAS versions up to and including 2.11.0 may mis-optimize
2164 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2172 .section .eh_frame,"aw",@progbits
2174 .4byte .LECIE1-.LSCIE1
2188 .4byte .LEFDE1-.LASFDE1
2190 .4byte .LASFDE1-__FRAME_BEGIN__
2198 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2199 cat > conftest.lit <<EOF
2200 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2201 0010 01000000 12000000 18000000 00000000 ................
2202 0020 08000000 04080000 0044 .........D @&t@
2204 cat > conftest.big <<EOF
2205 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2206 0010 00000001 00000012 00000018 00000000 ................
2207 0020 00000008 04000000 0844 .........D @&t@
2209 # If the assembler didn't choke, and we can objdump,
2210 # and we got the correct data, then succeed.
2211 # The text in the here-document typically retains its unix-style line
2212 # endings, while the output of objdump will use host line endings.
2213 # Therefore, use diff -b for the comparisons.
2214 if test x$gcc_cv_objdump != x \
2215 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2216 | tail -3 > conftest.got \
2217 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2218 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2220 gcc_cv_as_eh_frame=yes
2221 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2222 gcc_cv_as_eh_frame=buggy
2224 # Uh oh, what do we do now?
2225 gcc_cv_as_eh_frame=no
2228 if test $gcc_cv_as_eh_frame = buggy; then
2229 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2230 [Define if your assembler mis-optimizes .eh_frame data.])
2233 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2234 [elf,2,12,0], [--fatal-warnings],
2235 [.section .rodata.str, "aMS", @progbits, 1])
2236 if test $gcc_cv_as_shf_merge = no; then
2237 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2238 [elf,2,12,0], [--fatal-warnings],
2239 [.section .rodata.str, "aMS", %progbits, 1])
2241 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2242 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2243 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2245 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2246 [elf,2,16,0], [--fatal-warnings],
2247 [.section .text,"axG",@progbits,.foo,comdat])
2248 if test $gcc_cv_as_comdat_group = yes; then
2249 gcc_cv_as_comdat_group_percent=no
2251 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2252 [elf,2,16,0], [--fatal-warnings],
2253 [.section .text,"axG",%progbits,.foo,comdat])
2255 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2257 if test 0"$ld_date" -lt 20050308; then
2258 if test -n "$ld_date"; then
2259 # If there was date string, but was earlier than 2005-03-08, fail
2261 elif test "$ld_vers_major" -lt 2; then
2263 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2268 # assume linkers other than GNU ld don't support COMDAT group
2271 if test $comdat_group = no; then
2272 gcc_cv_as_comdat_group=no
2273 gcc_cv_as_comdat_group_percent=no
2275 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2276 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2277 [Define 0/1 if your assembler and linker support COMDAT groups.])
2279 # Thread-local storage - the check is heavily parametrized.
2288 .section ".tdata","awT",@progbits
2291 ldq $27,__tls_get_addr($29) !literal!1
2292 lda $16,foo($29) !tlsgd!1
2293 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2294 ldq $27,__tls_get_addr($29) !literal!2
2295 lda $16,foo($29) !tlsldm!2
2296 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2297 ldq $1,foo($29) !gotdtprel
2298 ldah $2,foo($29) !dtprelhi
2299 lda $3,foo($2) !dtprello
2300 lda $4,foo($29) !dtprel
2301 ldq $1,foo($29) !gottprel
2302 ldah $2,foo($29) !tprelhi
2303 lda $3,foo($2) !tprello
2304 lda $4,foo($29) !tprel'
2307 tls_as_opt=--fatal-warnings
2311 .section ".tdata","awT",@progbits
2323 .section ".tdata","awT",@progbits
2327 addil LT%foo-$tls_gdidx$,gp
2328 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2331 addil LT%foo-$tls_ldidx$,gp
2333 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2334 addil LR%foo-$tls_dtpoff$,%ret0
2335 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2337 addil LT%foo-$tls_ieoff$,gp
2338 ldw RT%foo-$tls_ieoff$(%r1),%t2
2341 addil LR%foo-$tls_leoff$,%t1
2342 ldo RR%foo-$tls_leoff$(%r1),%t2'
2345 tls_as_opt=--fatal-warnings
2349 .section ".tdata","awT",%progbits
2362 .section ".tdata","awT",@progbits
2366 leal foo@TLSGD(,%ebx,1), %eax
2367 leal foo@TLSLDM(%ebx), %eax
2368 leal foo@DTPOFF(%eax), %edx
2369 movl foo@GOTTPOFF(%ebx), %eax
2370 subl foo@GOTTPOFF(%ebx), %eax
2371 addl foo@GOTNTPOFF(%ebx), %eax
2372 movl foo@INDNTPOFF, %eax
2373 movl $foo@TPOFF, %eax
2374 subl $foo@TPOFF, %eax
2375 leal foo@NTPOFF(%ecx), %eax'
2378 tls_as_opt=--fatal-warnings
2382 .section ".tdata","awT",@progbits
2386 leaq foo@TLSGD(%rip), %rdi
2387 leaq foo@TLSLD(%rip), %rdi
2388 leaq foo@DTPOFF(%rax), %rdx
2389 movq foo@GOTTPOFF(%rip), %rax
2390 movq $foo@TPOFF, %rax'
2393 tls_as_opt=--fatal-warnings
2397 .section ".tdata","awT",@progbits
2400 addl r16 = @ltoff(@dtpmod(foo#)), gp
2401 addl r17 = @ltoff(@dtprel(foo#)), gp
2402 addl r18 = @ltoff(@tprel(foo#)), gp
2403 addl r19 = @dtprel(foo#), gp
2404 adds r21 = @dtprel(foo#), r13
2405 movl r23 = @dtprel(foo#)
2406 addl r20 = @tprel(foo#), gp
2407 adds r22 = @tprel(foo#), r13
2408 movl r24 = @tprel(foo#)'
2411 tls_as_opt=--fatal-warnings
2415 .section .tdata,"awT",@progbits
2419 addiu $4, $28, %tlsgd(x)
2420 addiu $4, $28, %tlsldm(x)
2421 lui $4, %dtprel_hi(x)
2422 addiu $4, $4, %dtprel_lo(x)
2423 lw $4, %gottprel(x)($28)
2424 lui $4, %tprel_hi(x)
2425 addiu $4, $4, %tprel_lo(x)'
2428 tls_as_opt='-32 --fatal-warnings'
2432 .section ".tdata","awT",@progbits
2440 addi 3,31,ld0@got@tlsgd
2442 addi 3,31,x1@got@tlsld
2445 addis 9,3,x2@dtprel@ha
2446 addi 9,9,x2@dtprel@l
2447 lwz 9,x3@got@tprel(31)
2450 addis 9,2,x2@tprel@ha
2451 addi 9,9,x2@tprel@l'
2454 tls_as_opt="-a32 --fatal-warnings"
2458 .section ".tdata","awT",@progbits
2466 addi 3,2,ld0@got@tlsgd
2472 addi 3,2,x1@got@tlsld
2478 addis 9,3,x2@dtprel@ha
2479 addi 9,9,x2@dtprel@l
2482 ld 9,x3@got@dtprel(2)
2488 tls_as_opt="-a64 --fatal-warnings"
2492 .section ".tdata","awT",@progbits
2501 l %r1,foo@GOTNTPOFF(%r12)
2502 l %r1,0(%r1):tls_load:foo
2503 bas %r14,0(%r1,%r13):tls_gdcall:foo
2504 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2507 tls_as_opt="-m31 --fatal-warnings"
2511 .section ".tdata","awT",@progbits
2519 lg %r1,foo@GOTNTPOFF(%r12)
2520 larl %r1,foo@INDNTPOFF
2521 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2522 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2525 tls_as_opt="-m64 -Aesame --fatal-warnings"
2527 sh-*-* | sh[34]-*-*)
2529 .section ".tdata","awT",@progbits
2539 tls_as_opt=--fatal-warnings
2543 sparc*-sun-solaris2.[56789]*)
2544 # TLS was introduced in the Solaris 9 4/04 release but
2545 # we do not enable it by default on Solaris 9 either.
2546 if test "x$enable_tls" = xyes ; then
2552 sparc*-sun-solaris2.*)
2559 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2561 .section ".tdata",#alloc,#write,#tls
2564 sethi %tgd_hi22(foo), %o0
2565 add %o0, %tgd_lo10(foo), %o1
2566 add %l7, %o1, %o0, %tgd_add(foo)
2567 call __tls_get_addr, %tgd_call(foo)
2568 sethi %tldm_hi22(foo), %l1
2569 add %l1, %tldm_lo10(foo), %l2
2570 add %l7, %l2, %o0, %tldm_add(foo)
2571 call __tls_get_addr, %tldm_call(foo)
2572 sethi %tldo_hix22(foo), %l3
2573 xor %l3, %tldo_lox10(foo), %l4
2574 add %o0, %l4, %l5, %tldo_add(foo)
2575 sethi %tie_hi22(foo), %o3
2576 add %o3, %tie_lo10(foo), %o3
2577 ld [%l7 + %o3], %o2, %tie_ld(foo)
2578 add %g7, %o2, %o4, %tie_add(foo)
2579 sethi %tle_hix22(foo), %l1
2580 xor %l1, %tle_lox10(foo), %o5
2581 ld [%g7 + %o5], %o1'
2586 .section ".tdata","awT",@progbits
2589 sethi %tgd_hi22(foo), %o0
2590 add %o0, %tgd_lo10(foo), %o1
2591 add %l7, %o1, %o0, %tgd_add(foo)
2592 call __tls_get_addr, %tgd_call(foo)
2593 sethi %tldm_hi22(foo), %l1
2594 add %l1, %tldm_lo10(foo), %l2
2595 add %l7, %l2, %o0, %tldm_add(foo)
2596 call __tls_get_addr, %tldm_call(foo)
2597 sethi %tldo_hix22(foo), %l3
2598 xor %l3, %tldo_lox10(foo), %l4
2599 add %o0, %l4, %l5, %tldo_add(foo)
2600 sethi %tie_hi22(foo), %o3
2601 add %o3, %tie_lo10(foo), %o3
2602 ld [%l7 + %o3], %o2, %tie_ld(foo)
2603 add %g7, %o2, %o4, %tie_add(foo)
2604 sethi %tle_hix22(foo), %l1
2605 xor %l1, %tle_lox10(foo), %o5
2606 ld [%g7 + %o5], %o1'
2609 tls_as_opt="-32 --fatal-warnings"
2615 if test "x$enable_tls" = xno ; then
2616 : # TLS explicitly disabled.
2617 elif test "x$enable_tls" = xyes ; then
2618 set_have_as_tls=yes # TLS explicitly enabled.
2619 elif test -z "$tls_first_major"; then
2620 : # If we don't have a check, assume no support.
2622 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2623 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2624 [set_have_as_tls=yes])
2626 if test $set_have_as_tls = yes ; then
2627 AC_DEFINE(HAVE_AS_TLS, 1,
2628 [Define if your assembler supports thread-local storage.])
2631 # Target-specific assembler checks.
2633 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2634 gcc_cv_ld_static_dynamic=no
2635 if test $in_tree_ld = yes ; then
2636 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2637 gcc_cv_ld_static_dynamic=yes
2639 elif test x$gcc_cv_ld != x; then
2640 # Check if linker supports -Bstatic/-Bdynamic option
2641 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2642 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2643 gcc_cv_ld_static_dynamic=yes
2646 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2647 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2648 [Define if your linker supports -Bstatic/-Bdynamic option.])
2650 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2652 if test x"$demangler_in_ld" = xyes; then
2653 AC_MSG_CHECKING(linker --demangle support)
2654 gcc_cv_ld_demangle=no
2655 if test $in_tree_ld = yes; then
2656 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2657 gcc_cv_ld_demangle=yes
2659 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2660 # Check if the GNU linker supports --demangle option
2661 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2662 gcc_cv_ld_demangle=yes
2665 if test x"$gcc_cv_ld_demangle" = xyes; then
2666 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2667 [Define if your linker supports --demangle option.])
2669 AC_MSG_RESULT($gcc_cv_ld_demangle)
2673 # All TARGET_ABI_OSF targets.
2674 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2675 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2676 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2679 extbl $3, $2, $3 !lituse_bytoff!1
2680 ldq $2, a($29) !literal!1
2681 ldq $4, b($29) !literal!2
2682 ldq_u $3, 0($2) !lituse_base!1
2683 ldq $27, f($29) !literal!5
2684 jsr $26, ($27), f !lituse_jsr!5
2685 ldah $29, 0($26) !gpdisp!3
2686 lda $0, c($29) !gprel
2687 ldah $1, d($29) !gprelhigh
2688 lda $1, d($1) !gprellow
2689 lda $29, 0($29) !gpdisp!3],,
2690 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2691 [Define if your assembler supports explicit relocations.])])
2692 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2693 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2696 ldq $27, a($29) !literal!1
2697 jsr $26, ($27), a !lituse_jsrdirect!1],,
2698 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2699 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2703 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2704 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2705 [-no-mul-bug-abort], [.text],,
2706 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2707 [Define if your assembler supports the -no-mul-bug-abort option.])])
2711 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2712 [.register %g2, #scratch],,
2713 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2714 [Define if your assembler supports .register.])])
2716 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2718 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2719 [Define if your assembler supports -relax option.])])
2721 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2722 gcc_cv_as_sparc_ua_pcrel,,
2730 .uaword %r_disp32(foo)],
2731 [if test x$gcc_cv_ld != x \
2732 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2733 gcc_cv_as_sparc_ua_pcrel=yes
2736 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2737 [Define if your assembler and linker support unaligned PC relative relocs.])
2739 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2740 gcc_cv_as_sparc_ua_pcrel_hidden,,
2745 .uaword %r_disp32(foo)
2746 .byte 0x32, 0x33, 0x34
2751 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2752 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2753 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2754 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2755 if $gcc_cv_objdump -R conftest 2> /dev/null \
2756 | grep 'DISP32' > /dev/null 2>&1; then
2759 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2763 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2764 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2765 ]) # unaligned pcrel relocs
2767 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2768 gcc_cv_as_sparc_offsetable_lo10,,
2771 or %g1, %lo(ab) + 12, %g1
2772 or %g1, %lo(ab + 12), %g1],
2773 [if test x$gcc_cv_objdump != x \
2774 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2775 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2776 gcc_cv_as_sparc_offsetable_lo10=yes
2778 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2779 [Define if your assembler supports offsetable %lo().])])
2783 i[34567]86-*-* | x86_64-*-*)
2786 cygwin* | pe | mingw32*)
2787 # Used for DWARF 2 in PE
2788 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2789 gcc_cv_as_ix86_pe_secrel32,
2795 [if test x$gcc_cv_ld != x \
2796 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2797 gcc_cv_as_ix86_pe_secrel32=yes
2800 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2801 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2805 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2806 gcc_cv_as_ix86_filds_fists,
2807 [2,9,0],, [filds mem; fists mem],,
2808 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2809 [Define if your assembler uses the new HImode fild and fist notation.])])
2811 gcc_GAS_CHECK_FEATURE([cmov syntax],
2812 gcc_cv_as_ix86_cmov_sun_syntax,,,
2813 [cmovl.l %edx, %eax],,
2814 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2815 [Define if your assembler supports the Sun syntax for cmov.])])
2817 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2818 gcc_cv_as_ix86_ffreep,,,
2820 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2821 [Define if your assembler supports the ffreep mnemonic.])])
2823 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2824 gcc_cv_as_ix86_sahf,,,
2826 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2827 [Define if your assembler supports the sahf mnemonic.])])
2829 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2830 gcc_cv_as_ix86_diff_sect_delta,,,
2838 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2839 [Define if your assembler supports the subtraction of symbols in different sections.])])
2841 # This one is used unconditionally by i386.[ch]; it is to be defined
2842 # to 1 if the feature is present, 0 otherwise.
2843 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2844 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2850 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2851 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2852 [Define true if the assembler supports '.long foo@GOTOFF'.])
2856 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2857 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2859 addl r15 = @ltoffx(x#), gp
2861 ld8.mov r16 = [[r15]], x#],,
2862 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2863 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2869 *-*-aix*) conftest_s=' .machine "pwr5"
2873 gcc_GAS_CHECK_FEATURE([.machine directive support],
2874 gcc_cv_as_machine_directive,,,
2875 [ .machine ppc7400])
2876 if test x$gcc_cv_as_machine_directive != xyes; then
2877 echo "*** This target requires an assembler supporting \".machine\"" >&2
2878 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2879 test x$build = x$target && exit 1
2883 *) conftest_s=' .machine power4
2888 gcc_GAS_CHECK_FEATURE([mfcr field support],
2889 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2891 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2892 [Define if your assembler supports mfcr field.])])
2895 *-*-aix*) conftest_s=' .machine "pwr5"
2898 *) conftest_s=' .machine power5
2903 gcc_GAS_CHECK_FEATURE([popcntb support],
2904 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2906 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2907 [Define if your assembler supports popcntb field.])])
2910 *-*-aix*) conftest_s=' .machine "pwr5x"
2913 *) conftest_s=' .machine power5
2918 gcc_GAS_CHECK_FEATURE([fp round support],
2919 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2921 [AC_DEFINE(HAVE_AS_FPRND, 1,
2922 [Define if your assembler supports fprnd.])])
2925 *-*-aix*) conftest_s=' .machine "pwr6"
2928 *) conftest_s=' .machine power6
2933 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2934 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2936 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2937 [Define if your assembler supports mffgpr and mftgpr.])])
2940 *-*-aix*) conftest_s=' .csect .text[[PR]]
2942 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2946 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2947 *) conftest_s=' .text
2949 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2952 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2953 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2955 [AC_DEFINE(HAVE_AS_REL16, 1,
2956 [Define if your assembler supports R_PPC_REL16 relocs.])])
2959 *-*-aix*) conftest_s=' .machine "pwr6"
2962 *) conftest_s=' .machine power6
2967 gcc_GAS_CHECK_FEATURE([compare bytes support],
2968 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2970 [AC_DEFINE(HAVE_AS_CMPB, 1,
2971 [Define if your assembler supports cmpb.])])
2974 *-*-aix*) conftest_s=' .machine "pwr6"
2977 *) conftest_s=' .machine power6
2982 gcc_GAS_CHECK_FEATURE([decimal float support],
2983 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2985 [AC_DEFINE(HAVE_AS_DFP, 1,
2986 [Define if your assembler supports DFP instructions.])])
2988 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2989 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2990 [.gnu_attribute 4,1],,
2991 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2992 [Define if your assembler supports .gnu_attribute.])])
2996 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2997 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2998 [ lw $4,%gp_rel(foo)($4)],,
2999 [if test x$target_cpu_default = x
3000 then target_cpu_default=MASK_EXPLICIT_RELOCS
3001 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3003 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3004 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3005 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3006 [Define if the assembler understands -mno-shared.])])
3008 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3009 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3010 [.gnu_attribute 4,1],,
3011 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3012 [Define if your assembler supports .gnu_attribute.])])
3014 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3015 gcc_cv_as_mips_dtprelword, [2,18,0],,
3016 [.section .tdata,"awT",@progbits
3020 .dtprelword x+0x8000],,
3021 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3022 [Define if your assembler supports .dtprelword.])])
3026 # Mips and HP-UX need the GNU assembler.
3027 # Linux on IA64 might be able to use the Intel assembler.
3030 mips*-*-* | *-*-hpux* )
3031 if test x$gas_flag = xyes \
3032 || test x"$host" != x"$build" \
3033 || test ! -x "$gcc_cv_as" \
3034 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3037 echo "*** This configuration requires the GNU assembler" >&2
3043 # ??? Not all targets support dwarf2 debug_line, even within a version
3044 # of gas. Moreover, we need to emit a valid instruction to trigger any
3045 # info to the output file. So, as supported targets are added to gas 2.11,
3046 # add some instruction here to (also) show we expect this might work.
3047 # ??? Once 2.11 is released, probably need to add first known working
3048 # version to the per-target configury.
3050 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3051 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3052 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3055 ia64*-*-* | s390*-*-*)
3062 if test x"$insn" != x; then
3064 .file 1 \"conftest.s\"
3067 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3068 gcc_cv_as_dwarf2_debug_line,
3069 [elf,2,11,0],, [$conftest_s],
3070 [if test x$gcc_cv_objdump != x \
3071 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3072 | grep debug_line > /dev/null 2>&1; then
3073 gcc_cv_as_dwarf2_debug_line=yes
3076 # The .debug_line file table must be in the exact order that
3077 # we specified the files, since these indices are also used
3078 # by DW_AT_decl_file. Approximate this test by testing if
3079 # the assembler bitches if the same index is assigned twice.
3080 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3081 gcc_cv_as_dwarf2_file_buggy,,,
3085 if test $gcc_cv_as_dwarf2_debug_line = yes \
3086 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3087 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3088 [Define if your assembler supports dwarf2 .file/.loc directives,
3089 and preserves file table indices exactly as given.])
3092 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3093 gcc_cv_as_gdwarf2_flag,
3094 [elf,2,11,0], [--gdwarf2], [$insn],,
3095 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3096 [Define if your assembler supports the --gdwarf2 option.])])
3098 gcc_GAS_CHECK_FEATURE([--gstabs option],
3099 gcc_cv_as_gstabs_flag,
3100 [elf,2,11,0], [--gstabs], [$insn],
3101 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3102 # and warns about it, but still exits successfully. So check for
3104 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3106 else gcc_cv_as_gstabs_flag=yes
3108 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3109 [Define if your assembler supports the --gstabs option.])])
3111 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3112 gcc_cv_as_debug_prefix_map_flag,
3113 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3114 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3115 [Define if your assembler supports the --debug-prefix-map option.])])
3118 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3119 [gcc_cv_as_line_zero],
3120 [gcc_cv_as_line_zero=no
3121 if test $in_tree_gas = yes; then
3122 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3123 elif test "x$gcc_cv_as" != x; then
3124 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3125 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3126 test "x`cat conftest.out`" = x
3128 gcc_cv_as_line_zero=yes
3130 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3131 cat conftest.s >&AS_MESSAGE_LOG_FD
3132 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3133 cat conftest.out >&AS_MESSAGE_LOG_FD
3135 rm -f conftest.o conftest.s conftest.out
3137 if test "x$gcc_cv_as_line_zero" = xyes; then
3138 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3139 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3142 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3143 gcc_cv_ld_ro_rw_mix=unknown
3144 if test $in_tree_ld = yes ; then
3145 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3146 && test $in_tree_ld_is_elf = yes; then
3147 gcc_cv_ld_ro_rw_mix=read-write
3149 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3150 echo '.section myfoosect, "a"' > conftest1.s
3151 echo '.section myfoosect, "aw"' > conftest2.s
3152 echo '.byte 1' >> conftest2.s
3153 echo '.section myfoosect, "a"' > conftest3.s
3154 echo '.byte 0' >> conftest3.s
3155 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3156 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3157 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3158 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3159 conftest2.o conftest3.o > /dev/null 2>&1; then
3160 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3161 | sed -e '/myfoosect/!d' -e N`
3162 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3163 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3164 gcc_cv_ld_ro_rw_mix=read-only
3166 gcc_cv_ld_ro_rw_mix=read-write
3171 rm -f conftest.* conftest[123].*
3174 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3175 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3176 [Define if your linker links a mix of read-only
3177 and read-write sections into a read-write section.])
3179 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3181 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3182 gcc_cv_ld_eh_frame_hdr=no
3183 if test $in_tree_ld = yes ; then
3184 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3185 && test $in_tree_ld_is_elf = yes; then
3186 gcc_cv_ld_eh_frame_hdr=yes
3188 elif test x$gcc_cv_ld != x; then
3189 # Check if linker supports --eh-frame-hdr option
3190 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3191 gcc_cv_ld_eh_frame_hdr=yes
3194 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3195 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3196 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3197 [Define if your linker supports --eh-frame-hdr option.])
3199 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3201 AC_MSG_CHECKING(linker position independent executable support)
3203 if test $in_tree_ld = yes ; then
3204 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3205 && test $in_tree_ld_is_elf = yes; then
3208 elif test x$gcc_cv_ld != x; then
3209 # Check if linker supports -pie option
3210 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3214 if test x"$gcc_cv_ld_pie" = xyes; then
3215 AC_DEFINE(HAVE_LD_PIE, 1,
3216 [Define if your linker supports -pie option.])
3218 AC_MSG_RESULT($gcc_cv_ld_pie)
3220 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3221 gcc_cv_ld_eh_gc_sections=no
3222 if test $in_tree_ld = yes ; then
3223 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3224 && test $in_tree_ld_is_elf = yes; then
3225 gcc_cv_ld_eh_gc_sections=yes
3227 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3228 cat > conftest.s <<EOF
3231 .type _start, @function
3234 .size _start, .-_start
3235 .section .text.foo,"ax",@progbits
3236 .type foo, @function
3240 .section .gcc_except_table.foo,"a",@progbits
3243 .section .eh_frame,"a",@progbits
3246 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3247 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3248 | grep "gc-sections option ignored" > /dev/null; then
3249 gcc_cv_ld_eh_gc_sections=no
3250 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3251 gcc_cv_ld_eh_gc_sections=yes
3252 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3253 if test x$gcc_cv_as_comdat_group != xyes; then
3254 gcc_cv_ld_eh_gc_sections=no
3255 cat > conftest.s <<EOF
3258 .type _start, @function
3261 .size _start, .-_start
3262 .section .gnu.linkonce.t.foo,"ax",@progbits
3263 .type foo, @function
3267 .section .gcc_except_table.foo,"a",@progbits
3270 .section .eh_frame,"a",@progbits
3273 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3274 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3275 | grep "gc-sections option ignored" > /dev/null; then
3276 gcc_cv_ld_eh_gc_sections=no
3277 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3278 gcc_cv_ld_eh_gc_sections=yes
3284 rm -f conftest.s conftest.o conftest
3288 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3289 gcc_cv_ld_eh_gc_sections=no
3292 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3293 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3294 [Define if your linker supports garbage collection of
3295 sections in presence of EH frames.])
3297 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3303 AC_CACHE_CHECK(linker --as-needed support,
3304 gcc_cv_ld_as_needed,
3305 [gcc_cv_ld_as_needed=no
3306 if test $in_tree_ld = yes ; then
3307 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3308 && test $in_tree_ld_is_elf = yes; then
3309 gcc_cv_ld_as_needed=yes
3311 elif test x$gcc_cv_ld != x; then
3312 # Check if linker supports --as-needed and --no-as-needed options
3313 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3314 gcc_cv_ld_as_needed=yes
3318 if test x"$gcc_cv_ld_as_needed" = xyes; then
3319 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3320 [Define if your linker supports --as-needed and --no-as-needed options.])
3323 case "$target:$tm_file" in
3324 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3325 AC_CACHE_CHECK(linker support for omitting dot symbols,
3326 gcc_cv_ld_no_dot_syms,
3327 [gcc_cv_ld_no_dot_syms=no
3328 if test $in_tree_ld = yes ; then
3329 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3330 gcc_cv_ld_no_dot_syms=yes
3332 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3333 cat > conftest1.s <<EOF
3337 cat > conftest2.s <<EOF
3338 .section ".opd","aw"
3343 .quad .LEfoo,.TOC.@tocbase,0
3349 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3350 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3351 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3352 gcc_cv_ld_no_dot_syms=yes
3354 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3357 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3358 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3359 [Define if your PowerPC64 linker only needs function descriptor syms.])
3364 AC_CACHE_CHECK(linker --sysroot support,
3366 [gcc_cv_ld_sysroot=no
3367 if test $in_tree_ld = yes ; then
3368 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3369 gcc_cv_ld_sysroot=yes
3371 elif test x$gcc_cv_ld != x; then
3372 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3373 gcc_cv_ld_sysroot=yes
3376 if test x"$gcc_cv_ld_sysroot" = xyes; then
3377 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3378 [Define if your linker supports --sysroot.])
3381 if test x$with_sysroot = x && test x$host = x$target \
3382 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3383 && test "$prefix" != "NONE"; then
3384 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3385 [Define to PREFIX/include if cpp should also search that directory.])
3388 # Test for stack protector support in target C library.
3389 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3390 gcc_cv_libc_provides_ssp,
3391 [gcc_cv_libc_provides_ssp=no
3394 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3395 if test "x$with_sysroot" = x; then
3396 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3397 elif test "x$with_build_sysroot" != "x"; then
3398 glibc_header_dir="${with_build_sysroot}/usr/include"
3399 elif test "x$with_sysroot" = xyes; then
3400 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3402 glibc_header_dir="${with_sysroot}/usr/include"
3405 glibc_header_dir=/usr/include
3407 # glibc 2.4 and later provides __stack_chk_fail and
3408 # either __stack_chk_guard, or TLS access to stack guard canary.
3409 if test -f $glibc_header_dir/features.h \
3410 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3411 $glibc_header_dir/features.h > /dev/null; then
3412 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3413 $glibc_header_dir/features.h > /dev/null; then
3414 gcc_cv_libc_provides_ssp=yes
3415 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3416 $glibc_header_dir/features.h > /dev/null \
3417 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3418 $glibc_header_dir/features.h > /dev/null; then
3419 gcc_cv_libc_provides_ssp=yes
3420 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3421 $glibc_header_dir/features.h > /dev/null && \
3422 test -f $glibc_header_dir/bits/uClibc_config.h && \
3423 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3424 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3425 gcc_cv_libc_provides_ssp=yes
3430 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3431 [echo "no __stack_chk_fail on this target"])
3433 *) gcc_cv_libc_provides_ssp=no ;;
3436 if test x$gcc_cv_libc_provides_ssp = xyes; then
3437 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3438 [Define if your target C library provides stack protector support])
3441 # Check if TFmode long double should be used by default or not.
3442 # Some glibc targets used DFmode long double, but with glibc 2.4
3443 # and later they can use TFmode.
3445 powerpc*-*-linux* | \
3450 AC_ARG_WITH(long-double-128,
3451 [ --with-long-double-128 Use 128-bit long double by default.],
3452 gcc_cv_target_ldbl128="$with_long_double_128",
3453 [gcc_cv_target_ldbl128=no
3454 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3455 if test "x$with_sysroot" = x; then
3456 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3457 elif test "x$with_build_sysroot" != "x"; then
3458 glibc_header_dir="${with_build_sysroot}/usr/include"
3459 elif test "x$with_sysroot" = xyes; then
3460 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3462 glibc_header_dir="${with_sysroot}/usr/include"
3465 glibc_header_dir=/usr/include
3468 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3469 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3470 && gcc_cv_target_ldbl128=yes
3475 if test x$gcc_cv_target_ldbl128 = xyes; then
3476 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3477 [Define if TFmode long double should be the default])
3480 # Find out what GC implementation we want, or may, use.
3482 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3490 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3493 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3498 echo "Using $GGC for garbage collection."
3500 # Use the system's zlib library.
3502 zlibinc="-I\$(srcdir)/../zlib"
3503 AC_ARG_WITH(system-zlib,
3504 [ --with-system-zlib use installed libz],
3511 dnl Very limited version of automake's enable-maintainer-mode
3513 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3514 dnl maintainer-mode is disabled by default
3515 AC_ARG_ENABLE(maintainer-mode,
3516 [ --enable-maintainer-mode
3517 enable make rules and dependencies not useful
3518 (and sometimes confusing) to the casual installer],
3519 maintainer_mode=$enableval,
3522 AC_MSG_RESULT($maintainer_mode)
3524 if test "$maintainer_mode" = "yes"; then
3535 # Make empty files to contain the specs and options for each language.
3536 # Then add #include lines to for a compiler that has specs and/or options.
3542 # These (without "all_") are set in each config-lang.in.
3543 # `language' must be a single word so is spelled singularly.
3546 all_outputs='Makefile gccbug libada-mk'
3547 # List of language makefile fragments.
3549 # List of language subdirectory makefiles. Deprecated.
3551 # Additional files for gengtype
3552 all_gtfiles="$target_gtfiles"
3554 # These are the languages that are set in --enable-languages,
3555 # and are available in the GCC tree.
3556 all_selected_languages=
3558 # Add the language fragments.
3559 # Languages are added via two mechanisms. Some information must be
3560 # recorded in makefile variables, these are defined in config-lang.in.
3561 # We accumulate them and plug them into the main Makefile.
3562 # The other mechanism is a set of hooks for each of the main targets
3563 # like `clean', `install', etc.
3565 language_hooks="Make-hooks"
3567 for lang in ${srcdir}/*/config-lang.in
3570 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3572 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3573 if test "x$lang_alias" = x
3575 echo "$lang doesn't set \$language." 1>&2
3578 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3579 subdirs="$subdirs $subdir"
3580 case ",$enable_languages," in
3582 all_selected_languages="$all_selected_languages $lang_alias"
3583 if test -f $srcdir/$subdir/lang-specs.h; then
3584 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3596 . ${srcdir}/$subdir/config-lang.in
3597 if test "x$language" = x
3599 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3604 case ",$enable_languages," in
3607 for i in $subdir_requires; do
3608 test -f "${srcdir}/$i/config-lang.in" && continue
3616 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3617 if test -f $srcdir/$subdir/lang.opt; then
3618 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3620 if test -f $srcdir/$subdir/$subdir-tree.def; then
3621 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3623 if test -f ${srcdir}/$subdir/Makefile.in
3624 then all_lang_makefiles="$subdir/Makefile"
3626 all_languages="$all_languages $language"
3627 all_compilers="$all_compilers $compilers"
3628 all_outputs="$all_outputs $outputs"
3629 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
<