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],
1166 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1167 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1168 [Define 0/1 to force the choice for exception handling model.])])
1170 # For platforms with the unwind ABI which includes an unwind library,
1171 # libunwind, we can choose to use the system libunwind.
1172 AC_ARG_WITH(system-libunwind,
1173 [ --with-system-libunwind use installed libunwind])
1175 # config.gcc also contains tests of with_system_libunwind.
1176 if test x$with_system_libunwind = xyes; then
1177 AC_DEFINE(HAVE_GETIPINFO, 1,
1178 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1181 # --------------------------------------------------------
1182 # Build, host, and target specific configuration fragments
1183 # --------------------------------------------------------
1185 # Collect build-machine-specific information.
1186 . ${srcdir}/config.build
1188 # Collect host-machine-specific information.
1189 . ${srcdir}/config.host
1193 # Collect target-machine-specific information.
1194 . ${srcdir}/config.gcc
1196 extra_objs="${host_extra_objs} ${extra_objs}"
1197 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1199 # Default the target-machine variables that were not explicitly set.
1200 if test x"$tm_file" = x
1201 then tm_file=$cpu_type/$cpu_type.h; fi
1203 if test x"$extra_headers" = x
1204 then extra_headers=; fi
1206 if test x$md_file = x
1207 then md_file=$cpu_type/$cpu_type.md; fi
1209 if test x$out_file = x
1210 then out_file=$cpu_type/$cpu_type.c; fi
1212 if test x"$tmake_file" = x
1213 then tmake_file=$cpu_type/t-$cpu_type
1216 if test x"$dwarf2" = xyes
1217 then tm_file="$tm_file tm-dwarf2.h"
1220 # Say what files are being used for the output code and MD file.
1221 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1222 echo "Using \`$srcdir/config/$md_file' as machine description file."
1224 # If any of the xm_file variables contain nonexistent files, warn
1225 # about them and drop them.
1228 for x in $build_xm_file; do
1229 if test -f $srcdir/config/$x
1231 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1237 for x in $host_xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for x in $xm_file; do
1247 if test -f $srcdir/config/$x
1249 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1255 for f in $tm_file; do
1258 if test $count = ax; then
1259 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1261 echo "Using the following target machine macro files:"
1262 for f in $tm_file; do
1263 echo " $srcdir/config/$f"
1267 if test x$need_64bit_hwint = xyes; then
1268 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1269 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1272 if test x$use_long_long_for_widest_fast_int = xyes; then
1273 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1274 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1275 efficiently supported by the host hardware.])
1279 for f in $host_xm_file; do
1282 if test $count = a; then
1284 elif test $count = ax; then
1285 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1287 echo "Using the following host machine macro files:"
1288 for f in $host_xm_file; do
1289 echo " $srcdir/config/$f"
1292 echo "Using ${out_host_hook_obj} for host machine hooks."
1294 if test "$host_xm_file" != "$build_xm_file"; then
1296 for f in $build_xm_file; do
1299 if test $count = a; then
1301 elif test $count = ax; then
1302 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1304 echo "Using the following build machine macro files:"
1305 for f in $build_xm_file; do
1306 echo " $srcdir/config/$f"
1313 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1314 gcc_cv_mcontext_underscores,
1316 #include <sys/cdefs.h>
1317 #include <sys/signal.h>
1318 #include <ucontext.h>
1319 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1321 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1322 if test $gcc_cv_mcontext_underscores = yes; then
1323 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1324 [mcontext_t fields start with __])
1333 # Check if a valid thread package
1334 case ${enable_threads} in
1337 target_thread_file='single'
1341 target_thread_file='single'
1343 aix | dce | gnat | irix | posix | posix95 | rtems | \
1344 single | solaris | vxworks | win32 | mipssde)
1345 target_thread_file=${enable_threads}
1348 echo "${enable_threads} is an unknown thread package" 1>&2
1353 if test x${thread_file} = x; then
1354 # No thread file set by target-specific clauses in config.gcc,
1355 # so use file chosen by default logic above
1356 thread_file=${target_thread_file}
1359 # Make gthr-default.h if we have a thread file.
1361 if test $thread_file != single; then
1362 rm -f gthr-default.h
1363 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1364 gthread_flags=-DHAVE_GTHR_DEFAULT
1366 AC_SUBST(gthread_flags)
1373 if test x$enable___cxa_atexit = xyes || \
1374 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1375 if test x$host = x$target; then
1377 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1378 # keyed to flag_use_cxa_atexit
1383 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1384 [echo "__cxa_atexit can't be enabled on this target"])
1388 # We can't check for __cxa_atexit when building a cross, so assume
1392 if test x$use_cxa_atexit = xyes; then
1393 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1394 [Define if you want to use __cxa_atexit, rather than atexit, to
1395 register C++ destructors for local statics and global objects.
1396 This is essential for fully standards-compliant handling of
1397 destructors, but requires __cxa_atexit in libc.])
1402 if test x$with_system_libunwind = xyes; then
1403 if test x$host = x$target; then
1404 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1407 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1408 if test x$use_getipinfo = xyes; then
1409 AC_DEFINE(HAVE_GETIPINFO, 1,
1410 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1412 echo "The system unwind library does not support _Unwind_GetIPInfo."
1415 # Look for a file containing extra machine modes.
1416 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1417 extra_modes_file='$(srcdir)'/config/${extra_modes}
1418 AC_SUBST(extra_modes_file)
1419 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1420 [Define to the name of a file containing a list of extra machine modes
1421 for this architecture.])
1424 # Convert extra_options into a form suitable for Makefile use.
1426 for f in $extra_options; do
1427 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1429 AC_SUBST(extra_opt_files)
1431 # auto-host.h is the file containing items generated by autoconf and is
1432 # the first file included by config.h.
1433 # If host=build, it is correct to have bconfig include auto-host.h
1434 # as well. If host!=build, we are in error and need to do more
1435 # work to find out the build config parameters.
1436 if test x$host = x$build
1438 build_auto=auto-host.h
1440 # We create a subdir, then run autoconf in the subdir.
1441 # To prevent recursion we set host and build for the new
1442 # invocation of configure to the build for this invocation
1449 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1450 *) realsrcdir=../${srcdir};;
1452 saved_CFLAGS="${CFLAGS}"
1453 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1454 ${realsrcdir}/configure \
1455 --enable-languages=${enable_languages-all} \
1456 --target=$target_alias --host=$build_alias --build=$build_alias
1457 CFLAGS="${saved_CFLAGS}"
1459 # We just finished tests for the build machine, so rename
1460 # the file auto-build.h in the gcc directory.
1461 mv auto-host.h ../auto-build.h
1464 build_auto=auto-build.h
1466 AC_SUBST(build_subdir)
1468 tm_file="${tm_file} defaults.h"
1469 tm_p_file="${tm_p_file} tm-preds.h"
1470 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1471 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1472 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1473 # put this back in temporarily.
1474 xm_file="auto-host.h ansidecl.h ${xm_file}"
1481 # Compile in configure arguments.
1482 if test -f configargs.h ; then
1483 # Being re-configured.
1484 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1485 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1487 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1490 # Double all backslashes and backslash all quotes to turn
1491 # gcc_config_arguments into a C string.
1492 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1493 $gcc_config_arguments
1495 gcc_config_arguments_str=`cat conftest.out`
1498 cat > configargs.h <<EOF
1499 /* Generated automatically. */
1500 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1501 static const char thread_model[] = "$thread_file";
1503 static const struct {
1504 const char *name, *value;
1505 } configure_default_options[] = $configure_default_options;
1509 # Internationalization
1510 ZW_GNU_GETTEXT_SISTER_DIR
1512 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1513 # -liconv on the link line twice.
1514 case "$LIBINTL" in *$LIBICONV*)
1518 AC_ARG_ENABLE(secureplt,
1519 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1522 # Windows32 Registry support for specifying GCC installation paths.
1523 AC_ARG_ENABLE(win32-registry,
1524 [ --disable-win32-registry
1525 disable lookup of installation paths in the
1526 Registry on Windows hosts
1527 --enable-win32-registry enable registry lookup (default)
1528 --enable-win32-registry=KEY
1529 use KEY instead of GCC version as the last portion
1530 of the registry key],,)
1533 win32 | pe | cygwin* | mingw32* | uwin*)
1534 if test "x$enable_win32_registry" != xno; then
1535 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1538 if test "x$enable_win32_registry" != xno; then
1539 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1540 [Define to 1 if installation paths should be looked up in the Windows
1541 Registry. Ignored on non-Windows hosts.])
1543 if test "x$enable_win32_registry" != xyes \
1544 && test "x$enable_win32_registry" != x; then
1545 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1546 [Define to be the last component of the Windows registry key under which
1547 to look for installation paths. The full key used will be
1548 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1549 The default is the GCC version number.])
1555 # Get an absolute path to the GCC top-level source directory
1556 holddir=`${PWDCMD-pwd}`
1558 topdir=`${PWDCMD-pwd}`
1561 # Conditionalize the makefile for this host machine.
1563 for f in ${host_xmake_file}
1565 if test -f ${srcdir}/config/$f
1567 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1571 # Conditionalize the makefile for this target machine.
1573 for f in ${tmake_file}
1575 if test -f ${srcdir}/config/$f
1577 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1580 tmake_file="${tmake_file_}"
1582 # This is a terrible hack which will go away some day.
1583 host_cc_for_libada=${CC}
1584 AC_SUBST(host_cc_for_libada)
1586 out_object_file=`basename $out_file .c`.o
1588 tm_file_list="options.h"
1589 tm_include_list="options.h"
1590 for f in $tm_file; do
1593 f=`echo $f | sed 's/^..//'`
1594 tm_file_list="${tm_file_list} $f"
1595 tm_include_list="${tm_include_list} $f"
1598 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1599 tm_include_list="${tm_include_list} $f"
1602 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1603 tm_include_list="${tm_include_list} config/$f"
1610 for f in $tm_p_file; do
1613 tm_p_file_list="${tm_p_file_list} $f"
1614 tm_p_include_list="${tm_p_include_list} $f"
1617 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1618 tm_p_include_list="${tm_p_include_list} config/$f"
1624 for f in $xm_file; do
1627 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1628 xm_include_list="${xm_include_list} $f"
1631 xm_file_list="${xm_file_list} $f"
1632 xm_include_list="${xm_include_list} $f"
1635 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1636 xm_include_list="${xm_include_list} config/$f"
1642 host_xm_include_list=
1643 for f in $host_xm_file; do
1646 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1647 host_xm_include_list="${host_xm_include_list} $f"
1650 host_xm_file_list="${host_xm_file_list} $f"
1651 host_xm_include_list="${host_xm_include_list} $f"
1654 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1655 host_xm_include_list="${host_xm_include_list} config/$f"
1661 for f in $build_xm_file; do
1664 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1665 build_xm_include_list="${build_xm_include_list} $f"
1667 auto-build.h | auto-host.h )
1668 build_xm_file_list="${build_xm_file_list} $f"
1669 build_xm_include_list="${build_xm_include_list} $f"
1672 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1673 build_xm_include_list="${build_xm_include_list} config/$f"
1678 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1679 # cross-compiler which does not use the native headers and libraries.
1680 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1681 CROSS= AC_SUBST(CROSS)
1682 ALL=all.internal AC_SUBST(ALL)
1683 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1685 if test "x$with_build_sysroot" != x; then
1686 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1688 # This value is used, even on a native system, because
1689 # CROSS_SYSTEM_HEADER_DIR is just
1690 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1691 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1694 if test x$host != x$target
1696 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1698 SYSTEM_HEADER_DIR=$build_system_header_dir
1699 case "$host","$target" in
1700 # Darwin crosses can use the host system's libraries and headers,
1701 # because of the fat library support. Of course, it must be the
1702 # same version of Darwin on both sides. Allow the user to
1703 # just say --target=foo-darwin without a version number to mean
1704 # "the version on this system".
1705 *-*-darwin*,*-*-darwin*)
1706 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1707 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1708 if test $hostos = $targetos -o $targetos = darwin ; then
1710 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1715 i?86-*-*,x86_64-*-* \
1716 | powerpc*-*-*,powerpc64*-*-*)
1717 CROSS="$CROSS -DNATIVE_CROSS" ;;
1719 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1720 SYSTEM_HEADER_DIR=$build_system_header_dir
1723 # If this is a cross-compiler that does not
1724 # have its own set of headers then define
1727 # If this is using newlib, without having the headers available now,
1728 # then define inhibit_libc in LIBGCC2_CFLAGS.
1729 # This prevents libgcc2 from containing any code which requires libc
1732 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1733 test x$with_newlib = xyes ; } &&
1734 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1737 AC_SUBST(inhibit_libc)
1739 # When building gcc with a cross-compiler, we need to adjust things so
1740 # that the generator programs are still built with the native compiler.
1741 # Also, we cannot run fixincludes or fix-header.
1743 # These are the normal (build=host) settings:
1744 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1745 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1746 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1748 # Possibly disable fixproto, on a per-target basis.
1749 case ${use_fixproto} in
1754 STMP_FIXPROTO=stmp-fixproto
1757 AC_SUBST(STMP_FIXPROTO)
1759 # And these apply if build != host, or we are generating coverage data
1760 if test x$build != x$host || test "x$coverage_flags" != x
1762 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1764 if test "x$TARGET_SYSTEM_ROOT" = x; then
1765 if test "x$STMP_FIXPROTO" != x; then
1766 STMP_FIXPROTO=stmp-install-fixproto
1771 # Expand extra_headers to include complete path.
1772 # This substitutes for lots of t-* files.
1774 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1775 for file in ${extra_headers} ; do
1776 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1779 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1780 if test x"$use_gcc_tgmath" = xyes
1781 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1784 # Define collect2 in Makefile.
1785 case $host_can_use_collect2 in
1787 *) collect2='collect2$(exeext)' ;;
1789 AC_SUBST([collect2])
1791 # Add a definition of USE_COLLECT2 if system wants one.
1792 case $use_collect2 in
1793 no) use_collect2= ;;
1796 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1797 xm_defines="${xm_defines} USE_COLLECT2"
1798 case $host_can_use_collect2 in
1800 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1806 # ---------------------------
1807 # Assembler & linker features
1808 # ---------------------------
1810 # Identify the assembler which will work hand-in-glove with the newly
1811 # built GCC, so that we can examine its features. This is the assembler
1812 # which will be driven by the driver program.
1814 # If build != host, and we aren't building gas in-tree, we identify a
1815 # build->target assembler and hope that it will have the same features
1816 # as the host->target assembler we'll be using.
1817 gcc_cv_gas_major_version=
1818 gcc_cv_gas_minor_version=
1819 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1821 m4_pattern_allow([AS_FOR_TARGET])dnl
1822 AS_VAR_SET_IF(gcc_cv_as,, [
1823 if test -x "$DEFAULT_ASSEMBLER"; then
1824 gcc_cv_as="$DEFAULT_ASSEMBLER"
1825 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1826 && test -f ../gas/Makefile \
1827 && test x$build = x$host; then
1828 gcc_cv_as=../gas/as-new$build_exeext
1829 elif test -x as$build_exeext; then
1830 # Build using assembler in the current directory.
1831 gcc_cv_as=./as$build_exeext
1832 elif test -x $AS_FOR_TARGET; then
1833 gcc_cv_as="$AS_FOR_TARGET"
1835 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1838 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1839 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1840 case "$ORIGINAL_AS_FOR_TARGET" in
1841 ./as | ./as$build_exeext) ;;
1842 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1845 AC_MSG_CHECKING(what assembler to use)
1846 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1847 # Single tree build which includes gas. We want to prefer it
1848 # over whatever linker top-level may have detected, since
1849 # we'll use what we're building after installation anyway.
1850 AC_MSG_RESULT(newly built gas)
1852 _gcc_COMPUTE_GAS_VERSION
1853 in_tree_gas_is_elf=no
1854 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1855 || (grep 'obj_format = multi' ../gas/Makefile \
1856 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1858 in_tree_gas_is_elf=yes
1861 AC_MSG_RESULT($gcc_cv_as)
1865 # Identify the linker which will work hand-in-glove with the newly
1866 # built GCC, so that we can examine its features. This is the linker
1867 # which will be driven by the driver program.
1869 # If build != host, and we aren't building gas in-tree, we identify a
1870 # build->target linker and hope that it will have the same features
1871 # as the host->target linker we'll be using.
1872 gcc_cv_gld_major_version=
1873 gcc_cv_gld_minor_version=
1874 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1875 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1877 AS_VAR_SET_IF(gcc_cv_ld,, [
1878 if test -x "$DEFAULT_LINKER"; then
1879 gcc_cv_ld="$DEFAULT_LINKER"
1880 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1881 && test -f ../ld/Makefile \
1882 && test x$build = x$host; then
1883 gcc_cv_ld=../ld/ld-new$build_exeext
1884 elif test -x collect-ld$build_exeext; then
1885 # Build using linker in the current directory.
1886 gcc_cv_ld=./collect-ld$build_exeext
1887 elif test -x $LD_FOR_TARGET; then
1888 gcc_cv_ld="$LD_FOR_TARGET"
1890 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1893 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1894 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1895 case "$ORIGINAL_LD_FOR_TARGET" in
1896 ./collect-ld | ./collect-ld$build_exeext) ;;
1897 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1900 AC_MSG_CHECKING(what linker to use)
1901 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1902 # Single tree build which includes ld. We want to prefer it
1903 # over whatever linker top-level may have detected, since
1904 # we'll use what we're building after installation anyway.
1905 AC_MSG_RESULT(newly built ld)
1907 in_tree_ld_is_elf=no
1908 if (grep 'EMUL = .*elf' ../ld/Makefile \
1909 || grep 'EMUL = .*linux' ../ld/Makefile \
1910 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1911 in_tree_ld_is_elf=yes
1913 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
1916 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1917 if test x$gcc_cv_gld_version != x; then
1921 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1922 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1925 AC_MSG_RESULT($gcc_cv_ld)
1929 # Figure out what nm we will be using.
1930 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1931 AS_VAR_SET_IF(gcc_cv_nm,, [
1932 if test -f $gcc_cv_binutils_srcdir/configure.in \
1933 && test -f ../binutils/Makefile \
1934 && test x$build = x$host; then
1935 gcc_cv_nm=../binutils/nm-new$build_exeext
1936 elif test -x nm$build_exeext; then
1937 gcc_cv_nm=./nm$build_exeext
1938 elif test -x $NM_FOR_TARGET; then
1939 gcc_cv_nm="$NM_FOR_TARGET"
1941 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1944 AC_MSG_CHECKING(what nm to use)
1945 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1946 # Single tree build which includes binutils.
1947 AC_MSG_RESULT(newly built nm)
1950 AC_MSG_RESULT($gcc_cv_nm)
1954 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1955 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1956 case "$ORIGINAL_NM_FOR_TARGET" in
1957 ./nm | ./nm$build_exeext) ;;
1958 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1962 # Figure out what objdump we will be using.
1963 AS_VAR_SET_IF(gcc_cv_objdump,, [
1964 if test -f $gcc_cv_binutils_srcdir/configure.in \
1965 && test -f ../binutils/Makefile \
1966 && test x$build = x$host; then
1967 # Single tree build which includes binutils.
1968 gcc_cv_objdump=../binutils/objdump$build_exeext
1969 elif test -x objdump$build_exeext; then
1970 gcc_cv_objdump=./objdump$build_exeext
1971 elif test -x $OBJDUMP_FOR_TARGET; then
1972 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1974 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1977 AC_MSG_CHECKING(what objdump to use)
1978 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1979 # Single tree build which includes binutils.
1980 AC_MSG_RESULT(newly built objdump)
1981 elif test x$gcc_cv_objdump = x; then
1982 AC_MSG_RESULT(not found)
1984 AC_MSG_RESULT($gcc_cv_objdump)
1987 # Figure out what assembler alignment features are present.
1988 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1992 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1993 [Define if your assembler supports .balign and .p2align.])])
1995 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1998 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1999 [Define if your assembler supports specifying the maximum number
2000 of bytes to skip when using the GAS .p2align command.])])
2002 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2005 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2006 [Define if your assembler supports .literal16.])])
2008 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2010 [conftest_label1: .word 0
2012 conftest_label2: .word 0
2014 [if test x$gcc_cv_nm != x; then
2015 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2016 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2017 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2019 else gcc_cv_as_subsection_m1=yes
2021 rm -f conftest.nm1 conftest.nm2
2023 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2024 [Define if your assembler supports .subsection and .subsection -1 starts
2025 emitting at the beginning of your section.])])
2027 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2030 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2032 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2034 [ .weakref foobar, barfnot],,
2035 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2037 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2040 .NSUBSPA $CODE$,COMDAT],,
2041 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2043 # .hidden needs to be supported in both the assembler and the linker,
2044 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2045 # This is irritatingly difficult to feature test for; we have to check the
2046 # date string after the version number. If we've got an in-tree
2047 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2049 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2050 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2055 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2056 [if test $in_tree_ld = yes ; then
2058 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2059 && test $in_tree_ld_is_elf = yes; then
2060 gcc_cv_ld_hidden=yes
2063 gcc_cv_ld_hidden=yes
2064 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2065 if echo "$ld_ver" | grep GNU > /dev/null; then
2067 ld_vers=`echo $ld_ver | sed -n \
2068 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2069 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2070 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2071 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2072 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2073 if test 0"$ld_date" -lt 20020404; then
2074 if test -n "$ld_date"; then
2075 # If there was date string, but was earlier than 2002-04-04, fail
2077 elif test -z "$ld_vers"; then
2078 # If there was no date string nor ld version number, something is wrong
2081 test -z "$ld_vers_patch" && ld_vers_patch=0
2082 if test "$ld_vers_major" -lt 2; then
2084 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2085 gcc_cv_ld_hidden="no"
2086 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2094 hppa64*-*-hpux* | ia64*-*-hpux*)
2095 gcc_cv_ld_hidden=yes
2103 libgcc_visibility=no
2104 AC_SUBST(libgcc_visibility)
2105 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2106 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2107 libgcc_visibility=yes
2108 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2109 [Define if your assembler and linker support .hidden.])
2112 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2113 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2121 [# GAS versions before 2.11 do not support uleb128,
2122 # despite appearing to.
2123 # ??? There exists an elf-specific test that will crash
2124 # the assembler. Perhaps it's better to figure out whether
2125 # arbitrary sections are supported and try the test.
2126 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2127 if echo "$as_ver" | grep GNU > /dev/null; then
2129 as_vers=`echo $as_ver | sed -n \
2130 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2131 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2132 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2134 if test $as_major -eq 2 && test $as_minor -lt 11
2136 else gcc_cv_as_leb128=yes
2139 [AC_DEFINE(HAVE_AS_LEB128, 1,
2140 [Define if your assembler supports .sleb128 and .uleb128.])])
2142 # GAS versions up to and including 2.11.0 may mis-optimize
2144 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2152 .section .eh_frame,"aw",@progbits
2154 .4byte .LECIE1-.LSCIE1
2168 .4byte .LEFDE1-.LASFDE1
2170 .4byte .LASFDE1-__FRAME_BEGIN__
2178 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2179 cat > conftest.lit <<EOF
2180 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2181 0010 01000000 12000000 18000000 00000000 ................
2182 0020 08000000 04080000 0044 .........D @&t@
2184 cat > conftest.big <<EOF
2185 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2186 0010 00000001 00000012 00000018 00000000 ................
2187 0020 00000008 04000000 0844 .........D @&t@
2189 # If the assembler didn't choke, and we can objdump,
2190 # and we got the correct data, then succeed.
2191 # The text in the here-document typically retains its unix-style line
2192 # endings, while the output of objdump will use host line endings.
2193 # Therefore, use diff -b for the comparisons.
2194 if test x$gcc_cv_objdump != x \
2195 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2196 | tail -3 > conftest.got \
2197 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2198 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2200 gcc_cv_as_eh_frame=yes
2201 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2202 gcc_cv_as_eh_frame=buggy
2204 # Uh oh, what do we do now?
2205 gcc_cv_as_eh_frame=no
2208 if test $gcc_cv_as_eh_frame = buggy; then
2209 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2210 [Define if your assembler mis-optimizes .eh_frame data.])
2213 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2214 [elf,2,12,0], [--fatal-warnings],
2215 [.section .rodata.str, "aMS", @progbits, 1])
2216 if test $gcc_cv_as_shf_merge = no; then
2217 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2218 [elf,2,12,0], [--fatal-warnings],
2219 [.section .rodata.str, "aMS", %progbits, 1])
2221 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2222 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2223 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2225 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2226 [elf,2,16,0], [--fatal-warnings],
2227 [.section .text,"axG",@progbits,.foo,comdat])
2228 if test $gcc_cv_as_comdat_group = yes; then
2229 gcc_cv_as_comdat_group_percent=no
2231 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2232 [elf,2,16,0], [--fatal-warnings],
2233 [.section .text,"axG",%progbits,.foo,comdat])
2235 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2237 if test 0"$ld_date" -lt 20050308; then
2238 if test -n "$ld_date"; then
2239 # If there was date string, but was earlier than 2005-03-08, fail
2241 elif test "$ld_vers_major" -lt 2; then
2243 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2248 # assume linkers other than GNU ld don't support COMDAT group
2251 if test $comdat_group = no; then
2252 gcc_cv_as_comdat_group=no
2253 gcc_cv_as_comdat_group_percent=no
2255 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2256 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2257 [Define 0/1 if your assembler and linker support COMDAT groups.])
2259 # Thread-local storage - the check is heavily parametrized.
2268 .section ".tdata","awT",@progbits
2271 ldq $27,__tls_get_addr($29) !literal!1
2272 lda $16,foo($29) !tlsgd!1
2273 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2274 ldq $27,__tls_get_addr($29) !literal!2
2275 lda $16,foo($29) !tlsldm!2
2276 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2277 ldq $1,foo($29) !gotdtprel
2278 ldah $2,foo($29) !dtprelhi
2279 lda $3,foo($2) !dtprello
2280 lda $4,foo($29) !dtprel
2281 ldq $1,foo($29) !gottprel
2282 ldah $2,foo($29) !tprelhi
2283 lda $3,foo($2) !tprello
2284 lda $4,foo($29) !tprel'
2287 tls_as_opt=--fatal-warnings
2291 .section ".tdata","awT",@progbits
2303 .section ".tdata","awT",@progbits
2307 addil LT%foo-$tls_gdidx$,gp
2308 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2311 addil LT%foo-$tls_ldidx$,gp
2313 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2314 addil LR%foo-$tls_dtpoff$,%ret0
2315 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2317 addil LT%foo-$tls_ieoff$,gp
2318 ldw RT%foo-$tls_ieoff$(%r1),%t2
2321 addil LR%foo-$tls_leoff$,%t1
2322 ldo RR%foo-$tls_leoff$(%r1),%t2'
2325 tls_as_opt=--fatal-warnings
2329 .section ".tdata","awT",%progbits
2342 .section ".tdata","awT",@progbits
2346 leal foo@TLSGD(,%ebx,1), %eax
2347 leal foo@TLSLDM(%ebx), %eax
2348 leal foo@DTPOFF(%eax), %edx
2349 movl foo@GOTTPOFF(%ebx), %eax
2350 subl foo@GOTTPOFF(%ebx), %eax
2351 addl foo@GOTNTPOFF(%ebx), %eax
2352 movl foo@INDNTPOFF, %eax
2353 movl $foo@TPOFF, %eax
2354 subl $foo@TPOFF, %eax
2355 leal foo@NTPOFF(%ecx), %eax'
2358 tls_as_opt=--fatal-warnings
2362 .section ".tdata","awT",@progbits
2366 leaq foo@TLSGD(%rip), %rdi
2367 leaq foo@TLSLD(%rip), %rdi
2368 leaq foo@DTPOFF(%rax), %rdx
2369 movq foo@GOTTPOFF(%rip), %rax
2370 movq $foo@TPOFF, %rax'
2373 tls_as_opt=--fatal-warnings
2377 .section ".tdata","awT",@progbits
2380 addl r16 = @ltoff(@dtpmod(foo#)), gp
2381 addl r17 = @ltoff(@dtprel(foo#)), gp
2382 addl r18 = @ltoff(@tprel(foo#)), gp
2383 addl r19 = @dtprel(foo#), gp
2384 adds r21 = @dtprel(foo#), r13
2385 movl r23 = @dtprel(foo#)
2386 addl r20 = @tprel(foo#), gp
2387 adds r22 = @tprel(foo#), r13
2388 movl r24 = @tprel(foo#)'
2391 tls_as_opt=--fatal-warnings
2395 .section .tdata,"awT",@progbits
2399 addiu $4, $28, %tlsgd(x)
2400 addiu $4, $28, %tlsldm(x)
2401 lui $4, %dtprel_hi(x)
2402 addiu $4, $4, %dtprel_lo(x)
2403 lw $4, %gottprel(x)($28)
2404 lui $4, %tprel_hi(x)
2405 addiu $4, $4, %tprel_lo(x)'
2408 tls_as_opt='-32 --fatal-warnings'
2412 .section ".tdata","awT",@progbits
2420 addi 3,31,ld0@got@tlsgd
2422 addi 3,31,x1@got@tlsld
2425 addis 9,3,x2@dtprel@ha
2426 addi 9,9,x2@dtprel@l
2427 lwz 9,x3@got@tprel(31)
2430 addis 9,2,x2@tprel@ha
2431 addi 9,9,x2@tprel@l'
2434 tls_as_opt="-a32 --fatal-warnings"
2438 .section ".tdata","awT",@progbits
2446 addi 3,2,ld0@got@tlsgd
2452 addi 3,2,x1@got@tlsld
2458 addis 9,3,x2@dtprel@ha
2459 addi 9,9,x2@dtprel@l
2462 ld 9,x3@got@dtprel(2)
2468 tls_as_opt="-a64 --fatal-warnings"
2472 .section ".tdata","awT",@progbits
2481 l %r1,foo@GOTNTPOFF(%r12)
2482 l %r1,0(%r1):tls_load:foo
2483 bas %r14,0(%r1,%r13):tls_gdcall:foo
2484 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2487 tls_as_opt="-m31 --fatal-warnings"
2491 .section ".tdata","awT",@progbits
2499 lg %r1,foo@GOTNTPOFF(%r12)
2500 larl %r1,foo@INDNTPOFF
2501 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2502 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2505 tls_as_opt="-m64 -Aesame --fatal-warnings"
2507 sh-*-* | sh[34]-*-*)
2509 .section ".tdata","awT",@progbits
2519 tls_as_opt=--fatal-warnings
2523 sparc*-sun-solaris2.[56789]*)
2524 # TLS was introduced in the Solaris 9 4/04 release but
2525 # we do not enable it by default on Solaris 9 either.
2526 if test "x$enable_tls" = xyes ; then
2532 sparc*-sun-solaris2.*)
2539 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2541 .section ".tdata",#alloc,#write,#tls
2544 sethi %tgd_hi22(foo), %o0
2545 add %o0, %tgd_lo10(foo), %o1
2546 add %l7, %o1, %o0, %tgd_add(foo)
2547 call __tls_get_addr, %tgd_call(foo)
2548 sethi %tldm_hi22(foo), %l1
2549 add %l1, %tldm_lo10(foo), %l2
2550 add %l7, %l2, %o0, %tldm_add(foo)
2551 call __tls_get_addr, %tldm_call(foo)
2552 sethi %tldo_hix22(foo), %l3
2553 xor %l3, %tldo_lox10(foo), %l4
2554 add %o0, %l4, %l5, %tldo_add(foo)
2555 sethi %tie_hi22(foo), %o3
2556 add %o3, %tie_lo10(foo), %o3
2557 ld [%l7 + %o3], %o2, %tie_ld(foo)
2558 add %g7, %o2, %o4, %tie_add(foo)
2559 sethi %tle_hix22(foo), %l1
2560 xor %l1, %tle_lox10(foo), %o5
2561 ld [%g7 + %o5], %o1'
2566 .section ".tdata","awT",@progbits
2569 sethi %tgd_hi22(foo), %o0
2570 add %o0, %tgd_lo10(foo), %o1
2571 add %l7, %o1, %o0, %tgd_add(foo)
2572 call __tls_get_addr, %tgd_call(foo)
2573 sethi %tldm_hi22(foo), %l1
2574 add %l1, %tldm_lo10(foo), %l2
2575 add %l7, %l2, %o0, %tldm_add(foo)
2576 call __tls_get_addr, %tldm_call(foo)
2577 sethi %tldo_hix22(foo), %l3
2578 xor %l3, %tldo_lox10(foo), %l4
2579 add %o0, %l4, %l5, %tldo_add(foo)
2580 sethi %tie_hi22(foo), %o3
2581 add %o3, %tie_lo10(foo), %o3
2582 ld [%l7 + %o3], %o2, %tie_ld(foo)
2583 add %g7, %o2, %o4, %tie_add(foo)
2584 sethi %tle_hix22(foo), %l1
2585 xor %l1, %tle_lox10(foo), %o5
2586 ld [%g7 + %o5], %o1'
2589 tls_as_opt="-32 --fatal-warnings"
2595 if test "x$enable_tls" = xno ; then
2596 : # TLS explicitly disabled.
2597 elif test "x$enable_tls" = xyes ; then
2598 set_have_as_tls=yes # TLS explicitly enabled.
2599 elif test -z "$tls_first_major"; then
2600 : # If we don't have a check, assume no support.
2602 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2603 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2604 [set_have_as_tls=yes])
2606 if test $set_have_as_tls = yes ; then
2607 AC_DEFINE(HAVE_AS_TLS, 1,
2608 [Define if your assembler supports thread-local storage.])
2611 # Target-specific assembler checks.
2613 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2614 gcc_cv_ld_static_dynamic=no
2615 if test $in_tree_ld = yes ; then
2616 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2617 gcc_cv_ld_static_dynamic=yes
2619 elif test x$gcc_cv_ld != x; then
2620 # Check if linker supports -Bstatic/-Bdynamic option
2621 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2622 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2623 gcc_cv_ld_static_dynamic=yes
2626 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2627 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2628 [Define if your linker supports -Bstatic/-Bdynamic option.])
2630 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2632 if test x"$demangler_in_ld" = xyes; then
2633 AC_MSG_CHECKING(linker --demangle support)
2634 gcc_cv_ld_demangle=no
2635 if test $in_tree_ld = yes; then
2636 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2637 gcc_cv_ld_demangle=yes
2639 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2640 # Check if the GNU linker supports --demangle option
2641 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2642 gcc_cv_ld_demangle=yes
2645 if test x"$gcc_cv_ld_demangle" = xyes; then
2646 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2647 [Define if your linker supports --demangle option.])
2649 AC_MSG_RESULT($gcc_cv_ld_demangle)
2653 # All TARGET_ABI_OSF targets.
2654 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2655 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2656 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2659 extbl $3, $2, $3 !lituse_bytoff!1
2660 ldq $2, a($29) !literal!1
2661 ldq $4, b($29) !literal!2
2662 ldq_u $3, 0($2) !lituse_base!1
2663 ldq $27, f($29) !literal!5
2664 jsr $26, ($27), f !lituse_jsr!5
2665 ldah $29, 0($26) !gpdisp!3
2666 lda $0, c($29) !gprel
2667 ldah $1, d($29) !gprelhigh
2668 lda $1, d($1) !gprellow
2669 lda $29, 0($29) !gpdisp!3],,
2670 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2671 [Define if your assembler supports explicit relocations.])])
2672 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2673 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2676 ldq $27, a($29) !literal!1
2677 jsr $26, ($27), a !lituse_jsrdirect!1],,
2678 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2679 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2683 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2684 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2685 [-no-mul-bug-abort], [.text],,
2686 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2687 [Define if your assembler supports the -no-mul-bug-abort option.])])
2691 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2692 [.register %g2, #scratch],,
2693 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2694 [Define if your assembler supports .register.])])
2696 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2698 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2699 [Define if your assembler supports -relax option.])])
2701 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2702 gcc_cv_as_sparc_ua_pcrel,,
2710 .uaword %r_disp32(foo)],
2711 [if test x$gcc_cv_ld != x \
2712 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2713 gcc_cv_as_sparc_ua_pcrel=yes
2716 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2717 [Define if your assembler and linker support unaligned PC relative relocs.])
2719 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2720 gcc_cv_as_sparc_ua_pcrel_hidden,,
2725 .uaword %r_disp32(foo)
2726 .byte 0x32, 0x33, 0x34
2731 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2732 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2733 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2734 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2735 if $gcc_cv_objdump -R conftest 2> /dev/null \
2736 | grep 'DISP32' > /dev/null 2>&1; then
2739 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2743 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2744 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2745 ]) # unaligned pcrel relocs
2747 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2748 gcc_cv_as_sparc_offsetable_lo10,,
2751 or %g1, %lo(ab) + 12, %g1
2752 or %g1, %lo(ab + 12), %g1],
2753 [if test x$gcc_cv_objdump != x \
2754 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2755 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2756 gcc_cv_as_sparc_offsetable_lo10=yes
2758 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2759 [Define if your assembler supports offsetable %lo().])])
2763 i[34567]86-*-* | x86_64-*-*)
2766 cygwin* | pe | mingw32*)
2767 # Used for DWARF 2 in PE
2768 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2769 gcc_cv_as_ix86_pe_secrel32,
2775 [if test x$gcc_cv_ld != x \
2776 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2777 gcc_cv_as_ix86_pe_secrel32=yes
2780 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2781 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2785 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2786 gcc_cv_as_ix86_filds_fists,
2787 [2,9,0],, [filds mem; fists mem],,
2788 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2789 [Define if your assembler uses the new HImode fild and fist notation.])])
2791 gcc_GAS_CHECK_FEATURE([cmov syntax],
2792 gcc_cv_as_ix86_cmov_sun_syntax,,,
2793 [cmovl.l %edx, %eax],,
2794 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2795 [Define if your assembler supports the Sun syntax for cmov.])])
2797 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2798 gcc_cv_as_ix86_ffreep,,,
2800 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2801 [Define if your assembler supports the ffreep mnemonic.])])
2803 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2804 gcc_cv_as_ix86_sahf,,,
2806 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2807 [Define if your assembler supports the sahf mnemonic.])])
2809 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2810 gcc_cv_as_ix86_diff_sect_delta,,,
2818 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2819 [Define if your assembler supports the subtraction of symbols in different sections.])])
2821 # This one is used unconditionally by i386.[ch]; it is to be defined
2822 # to 1 if the feature is present, 0 otherwise.
2823 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2824 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2830 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2831 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2832 [Define true if the assembler supports '.long foo@GOTOFF'.])
2836 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2837 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2839 addl r15 = @ltoffx(x#), gp
2841 ld8.mov r16 = [[r15]], x#],,
2842 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2843 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2849 *-*-aix*) conftest_s=' .machine "pwr5"
2853 gcc_GAS_CHECK_FEATURE([.machine directive support],
2854 gcc_cv_as_machine_directive,,,
2855 [ .machine ppc7400])
2856 if test x$gcc_cv_as_machine_directive != xyes; then
2857 echo "*** This target requires an assembler supporting \".machine\"" >&2
2858 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2859 test x$build = x$target && exit 1
2863 *) conftest_s=' .machine power4
2868 gcc_GAS_CHECK_FEATURE([mfcr field support],
2869 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2871 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2872 [Define if your assembler supports mfcr field.])])
2875 *-*-aix*) conftest_s=' .machine "pwr5"
2878 *) conftest_s=' .machine power5
2883 gcc_GAS_CHECK_FEATURE([popcntb support],
2884 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2886 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2887 [Define if your assembler supports popcntb field.])])
2890 *-*-aix*) conftest_s=' .machine "pwr5x"
2893 *) conftest_s=' .machine power5
2898 gcc_GAS_CHECK_FEATURE([fp round support],
2899 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2901 [AC_DEFINE(HAVE_AS_FPRND, 1,
2902 [Define if your assembler supports fprnd.])])
2905 *-*-aix*) conftest_s=' .machine "pwr6"
2908 *) conftest_s=' .machine power6
2913 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2914 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2916 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2917 [Define if your assembler supports mffgpr and mftgpr.])])
2920 *-*-aix*) conftest_s=' .csect .text[[PR]]
2922 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2926 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2927 *) conftest_s=' .text
2929 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2932 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2933 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2935 [AC_DEFINE(HAVE_AS_REL16, 1,
2936 [Define if your assembler supports R_PPC_REL16 relocs.])])
2939 *-*-aix*) conftest_s=' .machine "pwr6"
2942 *) conftest_s=' .machine power6
2947 gcc_GAS_CHECK_FEATURE([compare bytes support],
2948 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2950 [AC_DEFINE(HAVE_AS_CMPB, 1,
2951 [Define if your assembler supports cmpb.])])
2954 *-*-aix*) conftest_s=' .machine "pwr6"
2957 *) conftest_s=' .machine power6
2962 gcc_GAS_CHECK_FEATURE([decimal float support],
2963 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2965 [AC_DEFINE(HAVE_AS_DFP, 1,
2966 [Define if your assembler supports DFP instructions.])])
2968 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2969 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2970 [.gnu_attribute 4,1],,
2971 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2972 [Define if your assembler supports .gnu_attribute.])])
2976 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2977 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2978 [ lw $4,%gp_rel(foo)($4)],,
2979 [if test x$target_cpu_default = x
2980 then target_cpu_default=MASK_EXPLICIT_RELOCS
2981 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2983 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2984 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2985 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2986 [Define if the assembler understands -mno-shared.])])
2988 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2989 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
2990 [.gnu_attribute 4,1],,
2991 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2992 [Define if your assembler supports .gnu_attribute.])])
2994 gcc_GAS_CHECK_FEATURE([.dtprelword support],
2995 gcc_cv_as_mips_dtprelword, [2,18,0],,
2996 [.section .tdata,"awT",@progbits
3000 .dtprelword x+0x8000],,
3001 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3002 [Define if your assembler supports .dtprelword.])])
3006 # Mips and HP-UX need the GNU assembler.
3007 # Linux on IA64 might be able to use the Intel assembler.
3010 mips*-*-* | *-*-hpux* )
3011 if test x$gas_flag = xyes \
3012 || test x"$host" != x"$build" \
3013 || test ! -x "$gcc_cv_as" \
3014 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3017 echo "*** This configuration requires the GNU assembler" >&2
3023 # ??? Not all targets support dwarf2 debug_line, even within a version
3024 # of gas. Moreover, we need to emit a valid instruction to trigger any
3025 # info to the output file. So, as supported targets are added to gas 2.11,
3026 # add some instruction here to (also) show we expect this might work.
3027 # ??? Once 2.11 is released, probably need to add first known working
3028 # version to the per-target configury.
3030 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3031 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3032 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3035 ia64*-*-* | s390*-*-*)
3042 if test x"$insn" != x; then
3044 .file 1 \"conftest.s\"
3047 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3048 gcc_cv_as_dwarf2_debug_line,
3049 [elf,2,11,0],, [$conftest_s],
3050 [if test x$gcc_cv_objdump != x \
3051 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3052 | grep debug_line > /dev/null 2>&1; then
3053 gcc_cv_as_dwarf2_debug_line=yes
3056 # The .debug_line file table must be in the exact order that
3057 # we specified the files, since these indices are also used
3058 # by DW_AT_decl_file. Approximate this test by testing if
3059 # the assembler bitches if the same index is assigned twice.
3060 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3061 gcc_cv_as_dwarf2_file_buggy,,,
3065 if test $gcc_cv_as_dwarf2_debug_line = yes \
3066 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3067 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3068 [Define if your assembler supports dwarf2 .file/.loc directives,
3069 and preserves file table indices exactly as given.])
3072 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3073 gcc_cv_as_gdwarf2_flag,
3074 [elf,2,11,0], [--gdwarf2], [$insn],,
3075 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3076 [Define if your assembler supports the --gdwarf2 option.])])
3078 gcc_GAS_CHECK_FEATURE([--gstabs option],
3079 gcc_cv_as_gstabs_flag,
3080 [elf,2,11,0], [--gstabs], [$insn],
3081 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3082 # and warns about it, but still exits successfully. So check for
3084 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3086 else gcc_cv_as_gstabs_flag=yes
3088 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3089 [Define if your assembler supports the --gstabs option.])])
3091 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3092 gcc_cv_as_debug_prefix_map_flag,
3093 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3094 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3095 [Define if your assembler supports the --debug-prefix-map option.])])
3098 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3099 [gcc_cv_as_line_zero],
3100 [gcc_cv_as_line_zero=no
3101 if test $in_tree_gas = yes; then
3102 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3103 elif test "x$gcc_cv_as" != x; then
3104 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3105 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3106 test "x`cat conftest.out`" = x
3108 gcc_cv_as_line_zero=yes
3110 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3111 cat conftest.s >&AS_MESSAGE_LOG_FD
3112 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3113 cat conftest.out >&AS_MESSAGE_LOG_FD
3115 rm -f conftest.o conftest.s conftest.out
3117 if test "x$gcc_cv_as_line_zero" = xyes; then
3118 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3119 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3122 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3123 gcc_cv_ld_ro_rw_mix=unknown
3124 if test $in_tree_ld = yes ; then
3125 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3126 && test $in_tree_ld_is_elf = yes; then
3127 gcc_cv_ld_ro_rw_mix=read-write
3129 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3130 echo '.section myfoosect, "a"' > conftest1.s
3131 echo '.section myfoosect, "aw"' > conftest2.s
3132 echo '.byte 1' >> conftest2.s
3133 echo '.section myfoosect, "a"' > conftest3.s
3134 echo '.byte 0' >> conftest3.s
3135 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3136 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3137 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3138 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3139 conftest2.o conftest3.o > /dev/null 2>&1; then
3140 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3141 | sed -e '/myfoosect/!d' -e N`
3142 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3143 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3144 gcc_cv_ld_ro_rw_mix=read-only
3146 gcc_cv_ld_ro_rw_mix=read-write
3151 rm -f conftest.* conftest[123].*
3154 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3155 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3156 [Define if your linker links a mix of read-only
3157 and read-write sections into a read-write section.])
3159 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3161 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3162 gcc_cv_ld_eh_frame_hdr=no
3163 if test $in_tree_ld = yes ; then
3164 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3165 && test $in_tree_ld_is_elf = yes; then
3166 gcc_cv_ld_eh_frame_hdr=yes
3168 elif test x$gcc_cv_ld != x; then
3169 # Check if linker supports --eh-frame-hdr option
3170 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3171 gcc_cv_ld_eh_frame_hdr=yes
3174 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3175 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3176 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3177 [Define if your linker supports --eh-frame-hdr option.])
3179 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3181 AC_MSG_CHECKING(linker position independent executable support)
3183 if test $in_tree_ld = yes ; then
3184 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3185 && test $in_tree_ld_is_elf = yes; then
3188 elif test x$gcc_cv_ld != x; then
3189 # Check if linker supports -pie option
3190 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3194 if test x"$gcc_cv_ld_pie" = xyes; then
3195 AC_DEFINE(HAVE_LD_PIE, 1,
3196 [Define if your linker supports -pie option.])
3198 AC_MSG_RESULT($gcc_cv_ld_pie)
3200 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3201 gcc_cv_ld_eh_gc_sections=no
3202 if test $in_tree_ld = yes ; then
3203 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3204 && test $in_tree_ld_is_elf = yes; then
3205 gcc_cv_ld_eh_gc_sections=yes
3207 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3208 cat > conftest.s <<EOF
3211 .type _start, @function
3214 .size _start, .-_start
3215 .section .text.foo,"ax",@progbits
3216 .type foo, @function
3220 .section .gcc_except_table.foo,"a",@progbits
3223 .section .eh_frame,"a",@progbits
3226 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3227 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3228 | grep "gc-sections option ignored" > /dev/null; then
3229 gcc_cv_ld_eh_gc_sections=no
3230 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3231 gcc_cv_ld_eh_gc_sections=yes
3232 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3233 if test x$gcc_cv_as_comdat_group != xyes; then
3234 gcc_cv_ld_eh_gc_sections=no
3235 cat > conftest.s <<EOF
3238 .type _start, @function
3241 .size _start, .-_start
3242 .section .gnu.linkonce.t.foo,"ax",@progbits
3243 .type foo, @function
3247 .section .gcc_except_table.foo,"a",@progbits
3250 .section .eh_frame,"a",@progbits
3253 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3254 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3255 | grep "gc-sections option ignored" > /dev/null; then
3256 gcc_cv_ld_eh_gc_sections=no
3257 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3258 gcc_cv_ld_eh_gc_sections=yes
3264 rm -f conftest.s conftest.o conftest
3268 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3269 gcc_cv_ld_eh_gc_sections=no
3272 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3273 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3274 [Define if your linker supports garbage collection of
3275 sections in presence of EH frames.])
3277 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3283 AC_CACHE_CHECK(linker --as-needed support,
3284 gcc_cv_ld_as_needed,
3285 [gcc_cv_ld_as_needed=no
3286 if test $in_tree_ld = yes ; then
3287 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3288 && test $in_tree_ld_is_elf = yes; then
3289 gcc_cv_ld_as_needed=yes
3291 elif test x$gcc_cv_ld != x; then
3292 # Check if linker supports --as-needed and --no-as-needed options
3293 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3294 gcc_cv_ld_as_needed=yes
3298 if test x"$gcc_cv_ld_as_needed" = xyes; then
3299 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3300 [Define if your linker supports --as-needed and --no-as-needed options.])
3303 case "$target:$tm_file" in
3304 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3305 AC_CACHE_CHECK(linker support for omitting dot symbols,
3306 gcc_cv_ld_no_dot_syms,
3307 [gcc_cv_ld_no_dot_syms=no
3308 if test $in_tree_ld = yes ; then
3309 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3310 gcc_cv_ld_no_dot_syms=yes
3312 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3313 cat > conftest1.s <<EOF
3317 cat > conftest2.s <<EOF
3318 .section ".opd","aw"
3323 .quad .LEfoo,.TOC.@tocbase,0
3329 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3330 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3331 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3332 gcc_cv_ld_no_dot_syms=yes
3334 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3337 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3338 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3339 [Define if your PowerPC64 linker only needs function descriptor syms.])
3344 AC_CACHE_CHECK(linker --sysroot support,
3346 [gcc_cv_ld_sysroot=no
3347 if test $in_tree_ld = yes ; then
3348 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3349 gcc_cv_ld_sysroot=yes
3351 elif test x$gcc_cv_ld != x; then
3352 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3353 gcc_cv_ld_sysroot=yes
3356 if test x"$gcc_cv_ld_sysroot" = xyes; then
3357 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3358 [Define if your linker supports --sysroot.])
3361 if test x$with_sysroot = x && test x$host = x$target \
3362 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3363 && test "$prefix" != "NONE"; then
3364 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3365 [Define to PREFIX/include if cpp should also search that directory.])
3368 # Test for stack protector support in target C library.
3369 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3370 gcc_cv_libc_provides_ssp,
3371 [gcc_cv_libc_provides_ssp=no
3374 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3375 if test "x$with_sysroot" = x; then
3376 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3377 elif test "x$with_build_sysroot" != "x"; then
3378 glibc_header_dir="${with_build_sysroot}/usr/include"
3379 elif test "x$with_sysroot" = xyes; then
3380 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3382 glibc_header_dir="${with_sysroot}/usr/include"
3385 glibc_header_dir=/usr/include
3387 # glibc 2.4 and later provides __stack_chk_fail and
3388 # either __stack_chk_guard, or TLS access to stack guard canary.
3389 if test -f $glibc_header_dir/features.h \
3390 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3391 $glibc_header_dir/features.h > /dev/null; then
3392 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3393 $glibc_header_dir/features.h > /dev/null; then
3394 gcc_cv_libc_provides_ssp=yes
3395 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3396 $glibc_header_dir/features.h > /dev/null \
3397 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3398 $glibc_header_dir/features.h > /dev/null; then
3399 gcc_cv_libc_provides_ssp=yes
3400 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3401 $glibc_header_dir/features.h > /dev/null && \
3402 test -f $glibc_header_dir/bits/uClibc_config.h && \
3403 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3404 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3405 gcc_cv_libc_provides_ssp=yes
3410 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3411 [echo "no __stack_chk_fail on this target"])
3413 *) gcc_cv_libc_provides_ssp=no ;;
3416 if test x$gcc_cv_libc_provides_ssp = xyes; then
3417 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3418 [Define if your target C library provides stack protector support])
3421 # Check if TFmode long double should be used by default or not.
3422 # Some glibc targets used DFmode long double, but with glibc 2.4
3423 # and later they can use TFmode.
3425 powerpc*-*-linux* | \
3430 AC_ARG_WITH(long-double-128,
3431 [ --with-long-double-128 Use 128-bit long double by default.],
3432 gcc_cv_target_ldbl128="$with_long_double_128",
3433 [gcc_cv_target_ldbl128=no
3434 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3435 if test "x$with_sysroot" = x; then
3436 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3437 elif test "x$with_build_sysroot" != "x"; then
3438 glibc_header_dir="${with_build_sysroot}/usr/include"
3439 elif test "x$with_sysroot" = xyes; then
3440 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3442 glibc_header_dir="${with_sysroot}/usr/include"
3445 glibc_header_dir=/usr/include
3448 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3449 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3450 && gcc_cv_target_ldbl128=yes
3455 if test x$gcc_cv_target_ldbl128 = xyes; then
3456 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3457 [Define if TFmode long double should be the default])
3460 # Find out what GC implementation we want, or may, use.
3462 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3470 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3473 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3478 echo "Using $GGC for garbage collection."
3480 # Use the system's zlib library.
3482 zlibinc="-I\$(srcdir)/../zlib"
3483 AC_ARG_WITH(system-zlib,
3484 [ --with-system-zlib use installed libz],
3491 dnl Very limited version of automake's enable-maintainer-mode
3493 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3494 dnl maintainer-mode is disabled by default
3495 AC_ARG_ENABLE(maintainer-mode,
3496 [ --enable-maintainer-mode
3497 enable make rules and dependencies not useful
3498 (and sometimes confusing) to the casual installer],
3499 maintainer_mode=$enableval,
3502 AC_MSG_RESULT($maintainer_mode)
3504 if test "$maintainer_mode" = "yes"; then
3515 # Make empty files to contain the specs and options for each language.
3516 # Then add #include lines to for a compiler that has specs and/or options.
3522 # These (without "all_") are set in each config-lang.in.
3523 # `language' must be a single word so is spelled singularly.
3526 all_outputs='Makefile gccbug libada-mk'
3527 # List of language makefile fragments.
3529 # List of language subdirectory makefiles. Deprecated.
3531 # Additional files for gengtype
3532 all_gtfiles="$target_gtfiles"
3534 # These are the languages that are set in --enable-languages,
3535 # and are available in the GCC tree.
3536 all_selected_languages=
3538 # Add the language fragments.
3539 # Languages are added via two mechanisms. Some information must be
3540 # recorded in makefile variables, these are defined in config-lang.in.
3541 # We accumulate them and plug them into the main Makefile.
3542 # The other mechanism is a set of hooks for each of the main targets
3543 # like `clean', `install', etc.
3545 language_hooks="Make-hooks"
3547 for lang in ${srcdir}/*/config-lang.in
3550 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3552 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3553 if test "x$lang_alias" = x
3555 echo "$lang doesn't set \$language." 1>&2
3558 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3559 subdirs="$subdirs $subdir"
3560 case ",$enable_languages," in
3562 all_selected_languages="$all_selected_languages $lang_alias"
3563 if test -f $srcdir/$subdir/lang-specs.h; then
3564 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3576 . ${srcdir}/$subdir/config-lang.in
3577 if test "x$language" = x
3579 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3584 case ",$enable_languages," in
3587 for i in $subdir_requires; do
3588 test -f "${srcdir}/$i/config-lang.in" && continue
3596 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3597 if test -f $srcdir/$subdir/lang.opt; then
3598 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3600 if test -f $srcdir/$subdir/$subdir-tree.def; then
3601 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3603 if test -f ${srcdir}/$subdir/Makefile.in
3604 then all_lang_makefiles="$subdir/Makefile"
3606 all_languages="$all_languages $language"
3607 all_compilers="$all_compilers $compilers"
3608 all_outputs="$all_outputs $outputs"
3609 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3612 # Pick up gtfiles for c
3614 . ${srcdir}/c-config-lang.in
3615 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3618 for language in $all_selected_languages
3620 check_languages="$check_languages check-$language"
3623 # We link each language in with a set of hooks, reached indirectly via
3624 # lang.${target}. Only do so for selected languages.
3628 target_list="all.cross start.encap rest.encap tags \
3629 install-common install-man install-info install-pdf dvi pdf \
3630 html uninstall info man srcextra srcman srcinfo \
3631 mostlyclean clean distclean maintainer-clean"
3633 for t in $target_list
3636 for lang in $all_selected_languages
3640 echo "lang.$t: $x" >> Make-hooks
3649 echo "dir ." > .gdbinit
3650 echo "dir ${srcdir}" >> .gdbinit
3651 if test x$gdb_needs_out_file_path = xyes
3653 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3655 if test "x$subdirs" != x; then
3658 echo "dir ${srcdir}/$s" >> .gdbinit
3661 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3663 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3664 AC_SUBST(gcc_tooldir)
3667 # Find a directory in which to install a shared libgcc.
3669 AC_ARG_ENABLE(version-specific-runtime-libs,
3670 [ --enable-version-specific-runtime-libs
3671 specify that runtime libraries should be
3672 installed in a compiler-specific directory])
3674 AC_ARG_WITH(slibdir,
3675 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3676 slibdir="$with_slibdir",
3677 if test "${enable_version_specific_runtime_libs+set}" = set; then
3678 slibdir='$(libsubdir)'
3679 elif test "$host" != "$target"; then
3680 slibdir='$(build_tooldir)/lib'
3686 objdir=`${PWDCMD-pwd}`
3689 AC_ARG_WITH(datarootdir,
3690 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3691 datarootdir="\${prefix}/$with_datarootdir",
3692 datarootdir='$(prefix)/share')
3693 AC_SUBST(datarootdir)
3696 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3697 docdir="\${prefix}/$with_docdir",
3698 docdir='$(datarootdir)')
3701 AC_ARG_WITH(htmldir,
3702 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3703 htmldir="\${prefix}/$with_htmldir",
3704 htmldir='$(docdir)')
3707 # Substitute configuration variables
3710 AC_SUBST(all_compilers)
3711 AC_SUBST(all_gtfiles)
3712 AC_SUBST(all_lang_makefrags)
3713 AC_SUBST(all_lang_makefiles)
3714 AC_SUBST(all_languages)
3715 AC_SUBST(all_selected_languages)
3716 AC_SUBST(build_exeext)
3717 AC_SUBST(build_install_headers_dir)
3718 AC_SUBST(build_xm_file_list)
3719 AC_SUBST(build_xm_include_list)
3720 AC_SUBST(build_xm_defines)
3721 AC_SUBST(build_file_translate)
3722 AC_SUBST(check_languages)
3723 AC_SUBST(cpp_install_dir)
3724 AC_SUBST(xmake_file)
3725 AC_SUBST(tmake_file)
3726 AC_SUBST(extra_gcc_objs)
3727 AC_SUBST(extra_headers_list)
3728 AC_SUBST(extra_objs)
3729 AC_SUBST(extra_parts)
3730 AC_SUBST(extra_passes)
3731 AC_SUBST(extra_programs)
3732 AC_SUBST(float_h_file)
3733 AC_SUBST(gcc_config_arguments)
3734 AC_SUBST(gcc_gxx_include_dir)
3735 AC_SUBST(host_exeext)
3736 AC_SUBST(host_xm_file_list)
3737 AC_SUBST(host_xm_include_list)
3738 AC_SUBST(host_xm_defines)
3739 AC_SUBST(out_host_hook_obj)
3741 AC_SUBST(lang_opt_files)
3742 AC_SUBST(lang_specs_files)
3743 AC_SUBST(lang_tree_files)
3744 AC_SUBST(local_prefix)
3746 AC_SUBST(objc_boehm_gc)
3748 AC_SUBST(out_object_file)
3749 AC_SUBST(thread_file)
3750 AC_SUBST(tm_file_list)
3751 AC_SUBST(tm_include_list)
3752 AC_SUBST(tm_defines)
3753 AC_SUBST(tm_p_file_list)
3754 AC_SUBST(tm_p_include_list)
3755 AC_SUBST(xm_file_list)
3756 AC_SUBST(xm_include_list)
3757 AC_SUBST(xm_defines)
3758 AC_SUBST(c_target_objs)
3759 AC_SUBST(cxx_target_objs)
3760 AC_SUBST(target_cpu_default)
3762 AC_SUBST_FILE(language_hooks)
3765 if test x${build} = x${host} ; then
3766 if test x${host} = x${target} ; then
3767 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3769 echo "Links are now set up to build a cross-compiler" 1>&2
3770 echo " from ${host} to ${target}." 1>&2
3773 if test x${host} = x${target} ; then
3774 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3775 echo " for ${target}." 1>&2
3777 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3778 echo " from ${host} to ${target}." 1>&2
3782 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3783 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3785 # Configure the subdirectories
3786 # AC_CONFIG_SUBDIRS($subdirs)
3788 # Create the Makefile
3789 # and configure language subdirectories
3790 AC_CONFIG_FILES($all_outputs)
3792 AC_CONFIG_COMMANDS([default],
3794 case ${CONFIG_HEADERS} in
3795 *auto-host.h:config.in*)
3798 # Make sure all the subdirs exist.
3799 for d in $subdirs doc build
3801 test -d $d || mkdir $d
3804 [subdirs='$subdirs'])