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 $gcc_cv_header_memcheck_h = yes; then
519 AC_DEFINE(HAVE_MEMCHECK_H, 1,
520 [Define if valgrind's memcheck.h header is installed.])
523 AC_SUBST(valgrind_path_defines)
524 AC_SUBST(valgrind_command)
526 AC_ARG_ENABLE(mapped-location,
527 [ --enable-mapped-location location_t is fileline integer cookie],,
528 enable_mapped_location=yes)
530 if test "$enable_mapped_location" = yes ; then
531 AC_DEFINE(USE_MAPPED_LOCATION, 1,
532 [Define if location_t is fileline integer cookie.])
535 # Enable code coverage collection
536 AC_ARG_ENABLE(coverage,
537 [ --enable-coverage[=LEVEL]
538 enable compiler's code coverage collection.
539 Use to measure compiler performance and locate
540 unused parts of the compiler. With LEVEL, specify
541 optimization. Values are opt, noopt,
543 [case "${enableval}" in
545 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
548 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
551 # a.k.a. --disable-coverage
555 AC_MSG_ERROR(unknown coverage setting $enableval)
559 AC_SUBST(coverage_flags)
561 AC_ARG_ENABLE(gather-detailed-mem-stats,
562 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
563 [enable_gather_detailed_mem_stats=no])
564 if test x$enable_gather_detailed_mem_stats = xyes ; then
565 AC_DEFINE(GATHER_STATISTICS, 1,
566 [Define to enable detailed memory allocation stats gathering.])
569 # -------------------------------
570 # Miscenalleous configure options
571 # -------------------------------
575 [ --with-stabs arrange to use stabs instead of host debug format],
579 # Determine whether or not multilibs are enabled.
580 AC_ARG_ENABLE(multilib,
581 [ --enable-multilib enable library support for multiple ABIs],
582 [], [enable_multilib=yes])
583 AC_SUBST(enable_multilib)
585 # Enable __cxa_atexit for C++.
586 AC_ARG_ENABLE(__cxa_atexit,
587 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
590 # Enable C extension for decimal float if target supports it.
591 AC_ARG_ENABLE(decimal-float,
592 [ --enable-decimal-float={no,yes,bid,dpd}
593 enable decimal float extension to C. Selecting 'bid'
594 or 'dpd' choses which decimal floating point format
597 case $enable_decimal_float in
598 yes | no | bid | dpd) ;;
599 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
600 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
605 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
606 enable_decimal_float=yes
609 AC_MSG_WARN(decimal float is not supported for this target, ignored)
610 enable_decimal_float=no
615 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
616 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
617 [Define to 1 to enable decimal float extension to C.])
619 # x86's use BID format instead of DPD
620 case x$enable_decimal_float in
623 i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=bid
627 enable_decimal_float=dpd
632 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
633 # dependency on libdecnumber.
634 enable_decimal_float=dpd
637 AC_SUBST(enable_decimal_float)
639 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
640 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
641 [Define to 1 to specify that we are using the BID decimal floating
642 point format instead of DPD])
644 # Enable C extension for fixed-point arithmetic.
645 AC_ARG_ENABLE(fixed-point,
646 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
654 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
655 enable_fixed_point=no
658 enable_fixed_point=yes
663 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
664 enable_fixed_point=no
668 AC_SUBST(enable_fixed_point)
670 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
671 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
672 [Define to 1 to enable fixed-point arithmetic extension to C.])
675 # Pass with no value to take the default
676 # Pass with a value to specify a thread package
677 AC_ARG_ENABLE(threads,
678 [ --enable-threads enable thread usage for target GCC
679 --enable-threads=LIB use LIB thread package for target GCC],,
683 [ --enable-tls enable or disable generation of tls code
684 overriding the assembler check for tls support],
688 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
689 Valid choices are 'yes' and 'no'.]) ;;
693 AC_ARG_ENABLE(objc-gc,
694 [ --enable-objc-gc enable the use of Boehm's garbage collector with
695 the GNU Objective-C runtime],
696 if test x$enable_objc_gc = xno; then
704 [ --with-dwarf2 force the default debug format to be DWARF 2],
705 dwarf2="$with_dwarf2",
708 AC_ARG_ENABLE(shared,
709 [ --disable-shared don't provide a shared libgcc],
711 case $enable_shared in
715 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
716 for pkg in $enableval; do
717 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
724 ], [enable_shared=yes])
725 AC_SUBST(enable_shared)
727 AC_ARG_WITH(build-sysroot,
728 [ --with-build-sysroot=sysroot
729 use sysroot as the system root during the build])
732 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
734 case ${with_sysroot} in
735 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
736 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
739 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
740 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
742 if test "x$prefix" = xNONE; then
743 test_prefix=/usr/local
747 if test "x$exec_prefix" = xNONE; then
748 test_exec_prefix=$test_prefix
750 test_exec_prefix=$exec_prefix
752 case ${TARGET_SYSTEM_ROOT} in
753 "${test_prefix}"|"${test_prefix}/"*|\
754 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
755 '${prefix}'|'${prefix}/'*|\
756 '${exec_prefix}'|'${exec_prefix}/'*)
757 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
758 TARGET_SYSTEM_ROOT_DEFINE="$t"
763 TARGET_SYSTEM_ROOT_DEFINE=
764 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
766 AC_SUBST(TARGET_SYSTEM_ROOT)
767 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
768 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
770 # Build with intermodule optimisations
771 AC_ARG_ENABLE(intermodule,
772 [ --enable-intermodule build the compiler in one step],
773 [case ${enable_intermodule} in
774 yes) onestep="-onestep";;
780 ACX_PKGVERSION([GCC])
781 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
783 # Sanity check enable_languages in case someone does not run the toplevel
784 # configure # script.
785 AC_ARG_ENABLE(languages,
786 [ --enable-languages=LIST specify which front-ends to build],
787 [case ,${enable_languages}, in
789 # go safe -- we cannot be much sure without the toplevel
791 # analysis of which target libs are present and usable
795 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
800 enable_languages=c,${enable_languages}
803 [enable_languages=c])
805 # Used by documentation targets
806 AC_SUBST(datarootdir)
810 # -------------------------
811 # Checks for other programs
812 # -------------------------
816 # Find some useful tools
818 # We need awk to create options.c and options.h.
819 # Bail out if it's missing.
821 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
829 # By default, the Darwin ranlib will not treat common symbols as
830 # definitions when building the archive table of contents. Other
831 # ranlibs do that; pass an option to the Darwin ranlib that makes
832 # it behave similarly.
838 AC_SUBST(ranlib_flags)
842 # See if cmp has --ignore-initial.
843 gcc_AC_PROG_CMP_IGNORE_INITIAL
845 # See if we have the mktemp command.
846 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
848 # See if makeinfo has been installed and is modern enough
849 # that we can use it.
850 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
851 [GNU texinfo.* \([0-9][0-9.]*\)],
852 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
853 if test $gcc_cv_prog_makeinfo_modern = no; then
855 *** Makeinfo is missing or too old.
856 *** Info documentation will not be built.])
863 # Is pod2man recent enough to regenerate manpages?
864 AC_MSG_CHECKING([for recent Pod::Man])
865 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
867 GENERATED_MANPAGES=generated-manpages
872 AC_SUBST(GENERATED_MANPAGES)
874 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
877 dnl Don't use AC_PROG_LEX; we insist on flex.
878 dnl LEXLIB is not useful in gcc.
879 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
882 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
884 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
885 # check for build == host before using them.
888 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
889 && test -d ../binutils ; then
890 NM='$(objdir)/../binutils/nm-new'
892 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
896 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
897 && test -d ../binutils ; then
898 AR='$(objdir)/../binutils/ar'
900 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
904 # --------------------
905 # Checks for C headers
906 # --------------------
908 AC_MSG_CHECKING(for GNU C library)
909 AC_CACHE_VAL(gcc_cv_glibc,
910 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
911 [[#include <features.h>]], [[
912 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
913 #error Not a GNU C library system
917 AC_MSG_RESULT($gcc_cv_glibc)
918 if test $gcc_cv_glibc = yes; then
919 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
922 # Need to reject headers which give warnings, so that the -Werror bootstrap
923 # works later. *sigh* This needs to come before all header checks.
930 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
931 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
932 sys/resource.h sys/param.h sys/times.h sys/stat.h \
933 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
935 # Check for thread headers.
936 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
937 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
939 # These tests can't be done till we know if we have limits.h.
948 # These libraries may be used by collect2.
949 # We may need a special search path to get them linked.
950 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
952 for libs in '' -lld -lmld \
953 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
954 '-L/usr/lib/cmplrs/cc3.11 -lmld'
957 AC_TRY_LINK_FUNC(ldopen,
958 [gcc_cv_collect2_libs="$libs"; break])
961 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
962 case $gcc_cv_collect2_libs in
964 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
966 AC_SUBST(COLLECT2_LIBS)
968 # When building Ada code on Alpha, we need exc_resume which is usually in
969 # -lexc. So test for it.
972 AC_SEARCH_LIBS(exc_resume, exc)
975 AC_SUBST(GNAT_LIBEXC)
977 # Some systems put ldexp and frexp in libm instead of libc; assume
978 # they're both in the same place. jcf-dump needs them.
981 AC_SEARCH_LIBS(ldexp, m)
986 # Use <inttypes.h> only if it exists,
987 # doesn't clash with <sys/types.h>, and declares intmax_t.
988 AC_MSG_CHECKING(for inttypes.h)
989 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
990 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
991 [[#include <sys/types.h>
992 #include <inttypes.h>]],
993 [[intmax_t i = -1;]])],
994 [gcc_cv_header_inttypes_h=yes],
995 [gcc_cv_header_inttypes_h=no])])
996 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
997 if test $gcc_cv_header_inttypes_h = yes; then
998 AC_DEFINE(HAVE_INTTYPES_H, 1,
999 [Define if you have a working <inttypes.h> header file.])
1002 dnl Disabled until we have a complete test for buggy enum bitfields.
1003 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1005 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1006 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1007 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1008 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1009 putchar_unlocked putc_unlocked)
1010 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1011 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1012 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1015 if test x$ac_cv_func_mbstowcs = xyes; then
1016 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1017 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1023 [gcc_cv_func_mbstowcs_works=yes],
1024 [gcc_cv_func_mbstowcs_works=no],
1025 [gcc_cv_func_mbstowcs_works=yes])])
1026 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1027 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1028 [Define this macro if mbstowcs does not crash when its
1029 first argument is NULL.])
1033 AC_CHECK_TYPE(ssize_t, int)
1035 # Try to determine the array type of the second argument of getgroups
1036 # for the target system (int or gid_t).
1038 if test "${target}" = "${build}"; then
1039 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1042 # This condition may need some tweaking. It should include all
1043 # targets where the array type of the second argument of getgroups
1044 # is int and the type of gid_t is not equivalent to int.
1045 *-*-sunos* | *-*-ultrix*)
1046 TARGET_GETGROUPS_T=int
1049 TARGET_GETGROUPS_T=gid_t
1053 AC_SUBST(TARGET_GETGROUPS_T)
1055 gcc_AC_FUNC_MMAP_BLACKLIST
1059 # Under VMS, vfork works very differently than on Unix. The standard test
1060 # won't work, and it isn't easily adaptable. It makes more sense to
1062 ac_cv_func_vfork_works=yes
1068 # Until we have in-tree GNU iconv:
1070 AC_SUBST(LIBICONV_DEP)
1076 # We will need to find libiberty.h and ansidecl.h
1077 saved_CFLAGS="$CFLAGS"
1078 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1079 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1080 strsignal strstr strverscmp \
1081 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1082 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1083 #include "ansidecl.h"
1084 #include "system.h"])
1086 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1087 #include "ansidecl.h"
1089 #ifdef HAVE_SYS_RESOURCE_H
1090 #include <sys/resource.h>
1094 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1095 #include "ansidecl.h"
1097 #ifdef HAVE_SYS_RESOURCE_H
1098 #include <sys/resource.h>
1100 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1101 [Define to \`long' if <sys/resource.h> doesn't define.])])
1103 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1104 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1105 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1106 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1107 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1108 #include "ansidecl.h"
1117 gcc_AC_CHECK_DECLS(times, , ,[
1118 #include "ansidecl.h"
1120 #ifdef HAVE_SYS_TIMES_H
1121 #include <sys/times.h>
1125 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1126 #include "ansidecl.h"
1131 # More time-related stuff.
1132 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1133 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1134 #include "ansidecl.h"
1136 #ifdef HAVE_SYS_TIMES_H
1137 #include <sys/times.h>
1139 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1140 if test $ac_cv_struct_tms = yes; then
1141 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1142 [Define if <sys/times.h> defines struct tms.])
1145 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1146 # revisit after autoconf 2.50.
1147 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1148 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1149 #include "ansidecl.h"
1151 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1152 if test $gcc_cv_type_clock_t = yes; then
1153 AC_DEFINE(HAVE_CLOCK_T, 1,
1154 [Define if <time.h> defines clock_t.])
1157 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1158 CFLAGS="$saved_CFLAGS"
1160 gcc_AC_INITFINI_ARRAY
1162 # mkdir takes a single argument on some systems.
1163 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1171 # With Setjmp/Longjmp based exception handling.
1172 AC_ARG_ENABLE(sjlj-exceptions,
1173 [ --enable-sjlj-exceptions
1174 arrange to use setjmp/longjmp exception handling],
1175 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1176 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1177 [Define 0/1 to force the choice for exception handling model.])])
1179 # For platforms with the unwind ABI which includes an unwind library,
1180 # libunwind, we can choose to use the system libunwind.
1181 AC_ARG_WITH(system-libunwind,
1182 [ --with-system-libunwind use installed libunwind])
1184 # config.gcc also contains tests of with_system_libunwind.
1185 if test x$with_system_libunwind = xyes; then
1186 AC_DEFINE(HAVE_GETIPINFO, 1,
1187 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1190 # --------------------------------------------------------
1191 # Build, host, and target specific configuration fragments
1192 # --------------------------------------------------------
1194 # Collect build-machine-specific information.
1195 . ${srcdir}/config.build
1197 # Collect host-machine-specific information.
1198 . ${srcdir}/config.host
1202 # Collect target-machine-specific information.
1203 . ${srcdir}/config.gcc
1205 extra_objs="${host_extra_objs} ${extra_objs}"
1206 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1208 # Default the target-machine variables that were not explicitly set.
1209 if test x"$tm_file" = x
1210 then tm_file=$cpu_type/$cpu_type.h; fi
1212 if test x"$extra_headers" = x
1213 then extra_headers=; fi
1215 if test x$md_file = x
1216 then md_file=$cpu_type/$cpu_type.md; fi
1218 if test x$out_file = x
1219 then out_file=$cpu_type/$cpu_type.c; fi
1221 if test x"$tmake_file" = x
1222 then tmake_file=$cpu_type/t-$cpu_type
1225 if test x"$dwarf2" = xyes
1226 then tm_file="$tm_file tm-dwarf2.h"
1229 # Say what files are being used for the output code and MD file.
1230 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1231 echo "Using \`$srcdir/config/$md_file' as machine description file."
1233 # If any of the xm_file variables contain nonexistent files, warn
1234 # about them and drop them.
1237 for x in $build_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 $host_xm_file; do
1247 if test -f $srcdir/config/$x
1249 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1255 for x in $xm_file; do
1256 if test -f $srcdir/config/$x
1258 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1264 for f in $tm_file; do
1267 if test $count = ax; then
1268 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1270 echo "Using the following target machine macro files:"
1271 for f in $tm_file; do
1272 echo " $srcdir/config/$f"
1276 if test x$need_64bit_hwint = xyes; then
1277 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1278 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1281 if test x$use_long_long_for_widest_fast_int = xyes; then
1282 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1283 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1284 efficiently supported by the host hardware.])
1288 for f in $host_xm_file; do
1291 if test $count = a; then
1293 elif test $count = ax; then
1294 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1296 echo "Using the following host machine macro files:"
1297 for f in $host_xm_file; do
1298 echo " $srcdir/config/$f"
1301 echo "Using ${out_host_hook_obj} for host machine hooks."
1303 if test "$host_xm_file" != "$build_xm_file"; then
1305 for f in $build_xm_file; do
1308 if test $count = a; then
1310 elif test $count = ax; then
1311 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1313 echo "Using the following build machine macro files:"
1314 for f in $build_xm_file; do
1315 echo " $srcdir/config/$f"
1322 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1323 gcc_cv_mcontext_underscores,
1325 #include <sys/cdefs.h>
1326 #include <sys/signal.h>
1327 #include <ucontext.h>
1328 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1330 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1331 if test $gcc_cv_mcontext_underscores = yes; then
1332 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1333 [mcontext_t fields start with __])
1342 # Check if a valid thread package
1343 case ${enable_threads} in
1346 target_thread_file='single'
1350 target_thread_file='single'
1352 aix | dce | gnat | irix | posix | posix95 | rtems | \
1353 single | solaris | vxworks | win32 | mipssde)
1354 target_thread_file=${enable_threads}
1357 echo "${enable_threads} is an unknown thread package" 1>&2
1362 if test x${thread_file} = x; then
1363 # No thread file set by target-specific clauses in config.gcc,
1364 # so use file chosen by default logic above
1365 thread_file=${target_thread_file}
1368 # Make gthr-default.h if we have a thread file.
1370 if test $thread_file != single; then
1371 rm -f gthr-default.h
1372 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1373 gthread_flags=-DHAVE_GTHR_DEFAULT
1375 AC_SUBST(gthread_flags)
1382 if test x$enable___cxa_atexit = xyes || \
1383 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1384 if test x$host = x$target; then
1386 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1387 # keyed to flag_use_cxa_atexit
1392 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1393 [echo "__cxa_atexit can't be enabled on this target"])
1397 # We can't check for __cxa_atexit when building a cross, so assume
1401 if test x$use_cxa_atexit = xyes; then
1402 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1403 [Define if you want to use __cxa_atexit, rather than atexit, to
1404 register C++ destructors for local statics and global objects.
1405 This is essential for fully standards-compliant handling of
1406 destructors, but requires __cxa_atexit in libc.])
1411 if test x$with_system_libunwind = xyes; then
1412 if test x$host = x$target; then
1413 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1416 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1417 if test x$use_getipinfo = xyes; then
1418 AC_DEFINE(HAVE_GETIPINFO, 1,
1419 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1421 echo "The system unwind library does not support _Unwind_GetIPInfo."
1424 # Look for a file containing extra machine modes.
1425 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1426 extra_modes_file='$(srcdir)'/config/${extra_modes}
1427 AC_SUBST(extra_modes_file)
1428 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1429 [Define to the name of a file containing a list of extra machine modes
1430 for this architecture.])
1433 # Convert extra_options into a form suitable for Makefile use.
1435 for f in $extra_options; do
1436 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1438 AC_SUBST(extra_opt_files)
1440 # auto-host.h is the file containing items generated by autoconf and is
1441 # the first file included by config.h.
1442 # If host=build, it is correct to have bconfig include auto-host.h
1443 # as well. If host!=build, we are in error and need to do more
1444 # work to find out the build config parameters.
1445 if test x$host = x$build
1447 build_auto=auto-host.h
1449 # We create a subdir, then run autoconf in the subdir.
1450 # To prevent recursion we set host and build for the new
1451 # invocation of configure to the build for this invocation
1458 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1459 *) realsrcdir=../${srcdir};;
1461 saved_CFLAGS="${CFLAGS}"
1462 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1463 ${realsrcdir}/configure \
1464 --enable-languages=${enable_languages-all} \
1465 --target=$target_alias --host=$build_alias --build=$build_alias
1466 CFLAGS="${saved_CFLAGS}"
1468 # We just finished tests for the build machine, so rename
1469 # the file auto-build.h in the gcc directory.
1470 mv auto-host.h ../auto-build.h
1473 build_auto=auto-build.h
1475 AC_SUBST(build_subdir)
1477 tm_file="${tm_file} defaults.h"
1478 tm_p_file="${tm_p_file} tm-preds.h"
1479 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1480 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1481 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1482 # put this back in temporarily.
1483 xm_file="auto-host.h ansidecl.h ${xm_file}"
1490 # Compile in configure arguments.
1491 if test -f configargs.h ; then
1492 # Being re-configured.
1493 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1494 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1496 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1499 # Double all backslashes and backslash all quotes to turn
1500 # gcc_config_arguments into a C string.
1501 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1502 $gcc_config_arguments
1504 gcc_config_arguments_str=`cat conftest.out`
1507 cat > configargs.h <<EOF
1508 /* Generated automatically. */
1509 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1510 static const char thread_model[] = "$thread_file";
1512 static const struct {
1513 const char *name, *value;
1514 } configure_default_options[] = $configure_default_options;
1518 # Internationalization
1519 ZW_GNU_GETTEXT_SISTER_DIR
1521 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1522 # -liconv on the link line twice.
1523 case "$LIBINTL" in *$LIBICONV*)
1527 AC_ARG_ENABLE(secureplt,
1528 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1531 # Windows32 Registry support for specifying GCC installation paths.
1532 AC_ARG_ENABLE(win32-registry,
1533 [ --disable-win32-registry
1534 disable lookup of installation paths in the
1535 Registry on Windows hosts
1536 --enable-win32-registry enable registry lookup (default)
1537 --enable-win32-registry=KEY
1538 use KEY instead of GCC version as the last portion
1539 of the registry key],,)
1542 win32 | pe | cygwin* | mingw32* | uwin*)
1543 if test "x$enable_win32_registry" != xno; then
1544 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1547 if test "x$enable_win32_registry" != xno; then
1548 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1549 [Define to 1 if installation paths should be looked up in the Windows
1550 Registry. Ignored on non-Windows hosts.])
1552 if test "x$enable_win32_registry" != xyes \
1553 && test "x$enable_win32_registry" != x; then
1554 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1555 [Define to be the last component of the Windows registry key under which
1556 to look for installation paths. The full key used will be
1557 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1558 The default is the GCC version number.])
1564 # Get an absolute path to the GCC top-level source directory
1565 holddir=`${PWDCMD-pwd}`
1567 topdir=`${PWDCMD-pwd}`
1570 # Conditionalize the makefile for this host machine.
1572 for f in ${host_xmake_file}
1574 if test -f ${srcdir}/config/$f
1576 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1580 # Conditionalize the makefile for this target machine.
1582 for f in ${tmake_file}
1584 if test -f ${srcdir}/config/$f
1586 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1589 tmake_file="${tmake_file_}"
1591 # This is a terrible hack which will go away some day.
1592 host_cc_for_libada=${CC}
1593 AC_SUBST(host_cc_for_libada)
1595 out_object_file=`basename $out_file .c`.o
1597 tm_file_list="options.h"
1598 tm_include_list="options.h"
1599 for f in $tm_file; do
1602 f=`echo $f | sed 's/^..//'`
1603 tm_file_list="${tm_file_list} $f"
1604 tm_include_list="${tm_include_list} $f"
1607 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1608 tm_include_list="${tm_include_list} $f"
1611 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1612 tm_include_list="${tm_include_list} config/$f"
1619 for f in $tm_p_file; do
1622 tm_p_file_list="${tm_p_file_list} $f"
1623 tm_p_include_list="${tm_p_include_list} $f"
1626 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1627 tm_p_include_list="${tm_p_include_list} config/$f"
1633 for f in $xm_file; do
1636 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1637 xm_include_list="${xm_include_list} $f"
1640 xm_file_list="${xm_file_list} $f"
1641 xm_include_list="${xm_include_list} $f"
1644 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1645 xm_include_list="${xm_include_list} config/$f"
1651 host_xm_include_list=
1652 for f in $host_xm_file; do
1655 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1656 host_xm_include_list="${host_xm_include_list} $f"
1659 host_xm_file_list="${host_xm_file_list} $f"
1660 host_xm_include_list="${host_xm_include_list} $f"
1663 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1664 host_xm_include_list="${host_xm_include_list} config/$f"
1670 for f in $build_xm_file; do
1673 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1674 build_xm_include_list="${build_xm_include_list} $f"
1676 auto-build.h | auto-host.h )
1677 build_xm_file_list="${build_xm_file_list} $f"
1678 build_xm_include_list="${build_xm_include_list} $f"
1681 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1682 build_xm_include_list="${build_xm_include_list} config/$f"
1687 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1688 # cross-compiler which does not use the native headers and libraries.
1689 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1690 CROSS= AC_SUBST(CROSS)
1691 ALL=all.internal AC_SUBST(ALL)
1692 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1694 if test "x$with_build_sysroot" != x; then
1695 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1697 # This value is used, even on a native system, because
1698 # CROSS_SYSTEM_HEADER_DIR is just
1699 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1700 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1703 if test x$host != x$target
1705 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1707 SYSTEM_HEADER_DIR=$build_system_header_dir
1708 case "$host","$target" in
1709 # Darwin crosses can use the host system's libraries and headers,
1710 # because of the fat library support. Of course, it must be the
1711 # same version of Darwin on both sides. Allow the user to
1712 # just say --target=foo-darwin without a version number to mean
1713 # "the version on this system".
1714 *-*-darwin*,*-*-darwin*)
1715 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1716 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1717 if test $hostos = $targetos -o $targetos = darwin ; then
1719 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1724 i?86-*-*,x86_64-*-* \
1725 | powerpc*-*-*,powerpc64*-*-*)
1726 CROSS="$CROSS -DNATIVE_CROSS" ;;
1728 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1729 SYSTEM_HEADER_DIR=$build_system_header_dir
1732 # If this is a cross-compiler that does not
1733 # have its own set of headers then define
1736 # If this is using newlib, without having the headers available now,
1737 # then define inhibit_libc in LIBGCC2_CFLAGS.
1738 # This prevents libgcc2 from containing any code which requires libc
1741 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1742 test x$with_newlib = xyes ; } &&
1743 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1746 AC_SUBST(inhibit_libc)
1748 # When building gcc with a cross-compiler, we need to adjust things so
1749 # that the generator programs are still built with the native compiler.
1750 # Also, we cannot run fixincludes or fix-header.
1752 # These are the normal (build=host) settings:
1753 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1754 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1755 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1757 # Possibly disable fixproto, on a per-target basis.
1758 case ${use_fixproto} in
1763 STMP_FIXPROTO=stmp-fixproto
1766 AC_SUBST(STMP_FIXPROTO)
1768 # And these apply if build != host, or we are generating coverage data
1769 if test x$build != x$host || test "x$coverage_flags" != x
1771 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1773 if test "x$TARGET_SYSTEM_ROOT" = x; then
1774 if test "x$STMP_FIXPROTO" != x; then
1775 STMP_FIXPROTO=stmp-install-fixproto
1780 # Expand extra_headers to include complete path.
1781 # This substitutes for lots of t-* files.
1783 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1784 for file in ${extra_headers} ; do
1785 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1788 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1789 if test x"$use_gcc_tgmath" = xyes
1790 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1793 # Define collect2 in Makefile.
1794 case $host_can_use_collect2 in
1796 *) collect2='collect2$(exeext)' ;;
1798 AC_SUBST([collect2])
1800 # Add a definition of USE_COLLECT2 if system wants one.
1801 case $use_collect2 in
1802 no) use_collect2= ;;
1805 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1806 xm_defines="${xm_defines} USE_COLLECT2"
1807 case $host_can_use_collect2 in
1809 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1815 # ---------------------------
1816 # Assembler & linker features
1817 # ---------------------------
1819 # Identify the assembler which will work hand-in-glove with the newly
1820 # built GCC, so that we can examine its features. This is the assembler
1821 # which will be driven by the driver program.
1823 # If build != host, and we aren't building gas in-tree, we identify a
1824 # build->target assembler and hope that it will have the same features
1825 # as the host->target assembler we'll be using.
1826 gcc_cv_gas_major_version=
1827 gcc_cv_gas_minor_version=
1828 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1830 m4_pattern_allow([AS_FOR_TARGET])dnl
1831 AS_VAR_SET_IF(gcc_cv_as,, [
1832 if test -x "$DEFAULT_ASSEMBLER"; then
1833 gcc_cv_as="$DEFAULT_ASSEMBLER"
1834 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1835 && test -f ../gas/Makefile \
1836 && test x$build = x$host; then
1837 gcc_cv_as=../gas/as-new$build_exeext
1838 elif test -x as$build_exeext; then
1839 # Build using assembler in the current directory.
1840 gcc_cv_as=./as$build_exeext
1841 elif test -x $AS_FOR_TARGET; then
1842 gcc_cv_as="$AS_FOR_TARGET"
1844 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1847 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1848 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1849 case "$ORIGINAL_AS_FOR_TARGET" in
1850 ./as | ./as$build_exeext) ;;
1851 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1854 AC_MSG_CHECKING(what assembler to use)
1855 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1856 # Single tree build which includes gas. We want to prefer it
1857 # over whatever linker top-level may have detected, since
1858 # we'll use what we're building after installation anyway.
1859 AC_MSG_RESULT(newly built gas)
1861 _gcc_COMPUTE_GAS_VERSION
1862 in_tree_gas_is_elf=no
1863 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1864 || (grep 'obj_format = multi' ../gas/Makefile \
1865 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1867 in_tree_gas_is_elf=yes
1870 AC_MSG_RESULT($gcc_cv_as)
1874 # Identify the linker which will work hand-in-glove with the newly
1875 # built GCC, so that we can examine its features. This is the linker
1876 # which will be driven by the driver program.
1878 # If build != host, and we aren't building gas in-tree, we identify a
1879 # build->target linker and hope that it will have the same features
1880 # as the host->target linker we'll be using.
1881 gcc_cv_gld_major_version=
1882 gcc_cv_gld_minor_version=
1883 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1884 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1886 AS_VAR_SET_IF(gcc_cv_ld,, [
1887 if test -x "$DEFAULT_LINKER"; then
1888 gcc_cv_ld="$DEFAULT_LINKER"
1889 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1890 && test -f ../ld/Makefile \
1891 && test x$build = x$host; then
1892 gcc_cv_ld=../ld/ld-new$build_exeext
1893 elif test -x collect-ld$build_exeext; then
1894 # Build using linker in the current directory.
1895 gcc_cv_ld=./collect-ld$build_exeext
1896 elif test -x $LD_FOR_TARGET; then
1897 gcc_cv_ld="$LD_FOR_TARGET"
1899 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1902 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1903 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1904 case "$ORIGINAL_LD_FOR_TARGET" in
1905 ./collect-ld | ./collect-ld$build_exeext) ;;
1906 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1909 AC_MSG_CHECKING(what linker to use)
1910 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1911 # Single tree build which includes ld. We want to prefer it
1912 # over whatever linker top-level may have detected, since
1913 # we'll use what we're building after installation anyway.
1914 AC_MSG_RESULT(newly built ld)
1916 in_tree_ld_is_elf=no
1917 if (grep 'EMUL = .*elf' ../ld/Makefile \
1918 || grep 'EMUL = .*linux' ../ld/Makefile \
1919 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1920 in_tree_ld_is_elf=yes
1922 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
1925 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1926 if test x$gcc_cv_gld_version != x; then
1930 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1931 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1934 AC_MSG_RESULT($gcc_cv_ld)
1938 # Figure out what nm we will be using.
1939 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1940 AS_VAR_SET_IF(gcc_cv_nm,, [
1941 if test -f $gcc_cv_binutils_srcdir/configure.in \
1942 && test -f ../binutils/Makefile \
1943 && test x$build = x$host; then
1944 gcc_cv_nm=../binutils/nm-new$build_exeext
1945 elif test -x nm$build_exeext; then
1946 gcc_cv_nm=./nm$build_exeext
1947 elif test -x $NM_FOR_TARGET; then
1948 gcc_cv_nm="$NM_FOR_TARGET"
1950 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1953 AC_MSG_CHECKING(what nm to use)
1954 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1955 # Single tree build which includes binutils.
1956 AC_MSG_RESULT(newly built nm)
1959 AC_MSG_RESULT($gcc_cv_nm)
1963 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1964 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1965 case "$ORIGINAL_NM_FOR_TARGET" in
1966 ./nm | ./nm$build_exeext) ;;
1967 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1971 # Figure out what objdump we will be using.
1972 AS_VAR_SET_IF(gcc_cv_objdump,, [
1973 if test -f $gcc_cv_binutils_srcdir/configure.in \
1974 && test -f ../binutils/Makefile \
1975 && test x$build = x$host; then
1976 # Single tree build which includes binutils.
1977 gcc_cv_objdump=../binutils/objdump$build_exeext
1978 elif test -x objdump$build_exeext; then
1979 gcc_cv_objdump=./objdump$build_exeext
1980 elif test -x $OBJDUMP_FOR_TARGET; then
1981 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1983 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1986 AC_MSG_CHECKING(what objdump to use)
1987 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1988 # Single tree build which includes binutils.
1989 AC_MSG_RESULT(newly built objdump)
1990 elif test x$gcc_cv_objdump = x; then
1991 AC_MSG_RESULT(not found)
1993 AC_MSG_RESULT($gcc_cv_objdump)
1996 # Figure out what assembler alignment features are present.
1997 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2001 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2002 [Define if your assembler supports .balign and .p2align.])])
2004 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2007 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2008 [Define if your assembler supports specifying the maximum number
2009 of bytes to skip when using the GAS .p2align command.])])
2011 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2014 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2015 [Define if your assembler supports .literal16.])])
2017 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2019 [conftest_label1: .word 0
2021 conftest_label2: .word 0
2023 [if test x$gcc_cv_nm != x; then
2024 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2025 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2026 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2028 else gcc_cv_as_subsection_m1=yes
2030 rm -f conftest.nm1 conftest.nm2
2032 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2033 [Define if your assembler supports .subsection and .subsection -1 starts
2034 emitting at the beginning of your section.])])
2036 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2039 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2041 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2043 [ .weakref foobar, barfnot],,
2044 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2046 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2049 .NSUBSPA $CODE$,COMDAT],,
2050 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2052 # .hidden needs to be supported in both the assembler and the linker,
2053 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2054 # This is irritatingly difficult to feature test for; we have to check the
2055 # date string after the version number. If we've got an in-tree
2056 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2058 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2059 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2064 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2065 [if test $in_tree_ld = yes ; then
2067 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2068 && test $in_tree_ld_is_elf = yes; then
2069 gcc_cv_ld_hidden=yes
2072 gcc_cv_ld_hidden=yes
2073 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2074 if echo "$ld_ver" | grep GNU > /dev/null; then
2076 ld_vers=`echo $ld_ver | sed -n \
2077 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2078 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2079 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2080 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2081 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2082 if test 0"$ld_date" -lt 20020404; then
2083 if test -n "$ld_date"; then
2084 # If there was date string, but was earlier than 2002-04-04, fail
2086 elif test -z "$ld_vers"; then
2087 # If there was no date string nor ld version number, something is wrong
2090 test -z "$ld_vers_patch" && ld_vers_patch=0
2091 if test "$ld_vers_major" -lt 2; then
2093 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2094 gcc_cv_ld_hidden="no"
2095 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2103 hppa64*-*-hpux* | ia64*-*-hpux*)
2104 gcc_cv_ld_hidden=yes
2112 libgcc_visibility=no
2113 AC_SUBST(libgcc_visibility)
2114 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2115 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2116 libgcc_visibility=yes
2117 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2118 [Define if your assembler and linker support .hidden.])
2121 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2122 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2130 [# GAS versions before 2.11 do not support uleb128,
2131 # despite appearing to.
2132 # ??? There exists an elf-specific test that will crash
2133 # the assembler. Perhaps it's better to figure out whether
2134 # arbitrary sections are supported and try the test.
2135 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2136 if echo "$as_ver" | grep GNU > /dev/null; then
2138 as_vers=`echo $as_ver | sed -n \
2139 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2140 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2141 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2143 if test $as_major -eq 2 && test $as_minor -lt 11
2145 else gcc_cv_as_leb128=yes
2148 [AC_DEFINE(HAVE_AS_LEB128, 1,
2149 [Define if your assembler supports .sleb128 and .uleb128.])])
2151 # GAS versions up to and including 2.11.0 may mis-optimize
2153 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2161 .section .eh_frame,"aw",@progbits
2163 .4byte .LECIE1-.LSCIE1
2177 .4byte .LEFDE1-.LASFDE1
2179 .4byte .LASFDE1-__FRAME_BEGIN__
2187 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2188 cat > conftest.lit <<EOF
2189 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2190 0010 01000000 12000000 18000000 00000000 ................
2191 0020 08000000 04080000 0044 .........D @&t@
2193 cat > conftest.big <<EOF
2194 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2195 0010 00000001 00000012 00000018 00000000 ................
2196 0020 00000008 04000000 0844 .........D @&t@
2198 # If the assembler didn't choke, and we can objdump,
2199 # and we got the correct data, then succeed.
2200 # The text in the here-document typically retains its unix-style line
2201 # endings, while the output of objdump will use host line endings.
2202 # Therefore, use diff -b for the comparisons.
2203 if test x$gcc_cv_objdump != x \
2204 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2205 | tail -3 > conftest.got \
2206 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2207 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2209 gcc_cv_as_eh_frame=yes
2210 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2211 gcc_cv_as_eh_frame=buggy
2213 # Uh oh, what do we do now?
2214 gcc_cv_as_eh_frame=no
2217 if test $gcc_cv_as_eh_frame = buggy; then
2218 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2219 [Define if your assembler mis-optimizes .eh_frame data.])
2222 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2223 [elf,2,12,0], [--fatal-warnings],
2224 [.section .rodata.str, "aMS", @progbits, 1])
2225 if test $gcc_cv_as_shf_merge = no; then
2226 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2227 [elf,2,12,0], [--fatal-warnings],
2228 [.section .rodata.str, "aMS", %progbits, 1])
2230 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2231 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2232 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2234 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2235 [elf,2,16,0], [--fatal-warnings],
2236 [.section .text,"axG",@progbits,.foo,comdat])
2237 if test $gcc_cv_as_comdat_group = yes; then
2238 gcc_cv_as_comdat_group_percent=no
2240 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2241 [elf,2,16,0], [--fatal-warnings],
2242 [.section .text,"axG",%progbits,.foo,comdat])
2244 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2246 if test 0"$ld_date" -lt 20050308; then
2247 if test -n "$ld_date"; then
2248 # If there was date string, but was earlier than 2005-03-08, fail
2250 elif test "$ld_vers_major" -lt 2; then
2252 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2257 # assume linkers other than GNU ld don't support COMDAT group
2260 if test $comdat_group = no; then
2261 gcc_cv_as_comdat_group=no
2262 gcc_cv_as_comdat_group_percent=no
2264 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2265 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2266 [Define 0/1 if your assembler and linker support COMDAT groups.])
2268 # Thread-local storage - the check is heavily parametrized.
2277 .section ".tdata","awT",@progbits
2280 ldq $27,__tls_get_addr($29) !literal!1
2281 lda $16,foo($29) !tlsgd!1
2282 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2283 ldq $27,__tls_get_addr($29) !literal!2
2284 lda $16,foo($29) !tlsldm!2
2285 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2286 ldq $1,foo($29) !gotdtprel
2287 ldah $2,foo($29) !dtprelhi
2288 lda $3,foo($2) !dtprello
2289 lda $4,foo($29) !dtprel
2290 ldq $1,foo($29) !gottprel
2291 ldah $2,foo($29) !tprelhi
2292 lda $3,foo($2) !tprello
2293 lda $4,foo($29) !tprel'
2296 tls_as_opt=--fatal-warnings
2300 .section ".tdata","awT",@progbits
2312 .section ".tdata","awT",@progbits
2316 addil LT%foo-$tls_gdidx$,gp
2317 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2320 addil LT%foo-$tls_ldidx$,gp
2322 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2323 addil LR%foo-$tls_dtpoff$,%ret0
2324 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2326 addil LT%foo-$tls_ieoff$,gp
2327 ldw RT%foo-$tls_ieoff$(%r1),%t2
2330 addil LR%foo-$tls_leoff$,%t1
2331 ldo RR%foo-$tls_leoff$(%r1),%t2'
2334 tls_as_opt=--fatal-warnings
2338 .section ".tdata","awT",%progbits
2351 .section ".tdata","awT",@progbits
2355 leal foo@TLSGD(,%ebx,1), %eax
2356 leal foo@TLSLDM(%ebx), %eax
2357 leal foo@DTPOFF(%eax), %edx
2358 movl foo@GOTTPOFF(%ebx), %eax
2359 subl foo@GOTTPOFF(%ebx), %eax
2360 addl foo@GOTNTPOFF(%ebx), %eax
2361 movl foo@INDNTPOFF, %eax
2362 movl $foo@TPOFF, %eax
2363 subl $foo@TPOFF, %eax
2364 leal foo@NTPOFF(%ecx), %eax'
2367 tls_as_opt=--fatal-warnings
2371 .section ".tdata","awT",@progbits
2375 leaq foo@TLSGD(%rip), %rdi
2376 leaq foo@TLSLD(%rip), %rdi
2377 leaq foo@DTPOFF(%rax), %rdx
2378 movq foo@GOTTPOFF(%rip), %rax
2379 movq $foo@TPOFF, %rax'
2382 tls_as_opt=--fatal-warnings
2386 .section ".tdata","awT",@progbits
2389 addl r16 = @ltoff(@dtpmod(foo#)), gp
2390 addl r17 = @ltoff(@dtprel(foo#)), gp
2391 addl r18 = @ltoff(@tprel(foo#)), gp
2392 addl r19 = @dtprel(foo#), gp
2393 adds r21 = @dtprel(foo#), r13
2394 movl r23 = @dtprel(foo#)
2395 addl r20 = @tprel(foo#), gp
2396 adds r22 = @tprel(foo#), r13
2397 movl r24 = @tprel(foo#)'
2400 tls_as_opt=--fatal-warnings
2404 .section .tdata,"awT",@progbits
2408 addiu $4, $28, %tlsgd(x)
2409 addiu $4, $28, %tlsldm(x)
2410 lui $4, %dtprel_hi(x)
2411 addiu $4, $4, %dtprel_lo(x)
2412 lw $4, %gottprel(x)($28)
2413 lui $4, %tprel_hi(x)
2414 addiu $4, $4, %tprel_lo(x)'
2417 tls_as_opt='-32 --fatal-warnings'
2421 .section ".tdata","awT",@progbits
2429 addi 3,31,ld0@got@tlsgd
2431 addi 3,31,x1@got@tlsld
2434 addis 9,3,x2@dtprel@ha
2435 addi 9,9,x2@dtprel@l
2436 lwz 9,x3@got@tprel(31)
2439 addis 9,2,x2@tprel@ha
2440 addi 9,9,x2@tprel@l'
2443 tls_as_opt="-a32 --fatal-warnings"
2447 .section ".tdata","awT",@progbits
2455 addi 3,2,ld0@got@tlsgd
2461 addi 3,2,x1@got@tlsld
2467 addis 9,3,x2@dtprel@ha
2468 addi 9,9,x2@dtprel@l
2471 ld 9,x3@got@dtprel(2)
2477 tls_as_opt="-a64 --fatal-warnings"
2481 .section ".tdata","awT",@progbits
2490 l %r1,foo@GOTNTPOFF(%r12)
2491 l %r1,0(%r1):tls_load:foo
2492 bas %r14,0(%r1,%r13):tls_gdcall:foo
2493 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2496 tls_as_opt="-m31 --fatal-warnings"
2500 .section ".tdata","awT",@progbits
2508 lg %r1,foo@GOTNTPOFF(%r12)
2509 larl %r1,foo@INDNTPOFF
2510 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2511 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2514 tls_as_opt="-m64 -Aesame --fatal-warnings"
2516 sh-*-* | sh[34]-*-*)
2518 .section ".tdata","awT",@progbits
2528 tls_as_opt=--fatal-warnings
2532 sparc*-sun-solaris2.[56789]*)
2533 # TLS was introduced in the Solaris 9 4/04 release but
2534 # we do not enable it by default on Solaris 9 either.
2535 if test "x$enable_tls" = xyes ; then
2541 sparc*-sun-solaris2.*)
2548 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2550 .section ".tdata",#alloc,#write,#tls
2553 sethi %tgd_hi22(foo), %o0
2554 add %o0, %tgd_lo10(foo), %o1
2555 add %l7, %o1, %o0, %tgd_add(foo)
2556 call __tls_get_addr, %tgd_call(foo)
2557 sethi %tldm_hi22(foo), %l1
2558 add %l1, %tldm_lo10(foo), %l2
2559 add %l7, %l2, %o0, %tldm_add(foo)
2560 call __tls_get_addr, %tldm_call(foo)
2561 sethi %tldo_hix22(foo), %l3
2562 xor %l3, %tldo_lox10(foo), %l4
2563 add %o0, %l4, %l5, %tldo_add(foo)
2564 sethi %tie_hi22(foo), %o3
2565 add %o3, %tie_lo10(foo), %o3
2566 ld [%l7 + %o3], %o2, %tie_ld(foo)
2567 add %g7, %o2, %o4, %tie_add(foo)
2568 sethi %tle_hix22(foo), %l1
2569 xor %l1, %tle_lox10(foo), %o5
2570 ld [%g7 + %o5], %o1'
2575 .section ".tdata","awT",@progbits
2578 sethi %tgd_hi22(foo), %o0
2579 add %o0, %tgd_lo10(foo), %o1
2580 add %l7, %o1, %o0, %tgd_add(foo)
2581 call __tls_get_addr, %tgd_call(foo)
2582 sethi %tldm_hi22(foo), %l1
2583 add %l1, %tldm_lo10(foo), %l2
2584 add %l7, %l2, %o0, %tldm_add(foo)
2585 call __tls_get_addr, %tldm_call(foo)
2586 sethi %tldo_hix22(foo), %l3
2587 xor %l3, %tldo_lox10(foo), %l4
2588 add %o0, %l4, %l5, %tldo_add(foo)
2589 sethi %tie_hi22(foo), %o3
2590 add %o3, %tie_lo10(foo), %o3
2591 ld [%l7 + %o3], %o2, %tie_ld(foo)
2592 add %g7, %o2, %o4, %tie_add(foo)
2593 sethi %tle_hix22(foo), %l1
2594 xor %l1, %tle_lox10(foo), %o5
2595 ld [%g7 + %o5], %o1'
2598 tls_as_opt="-32 --fatal-warnings"
2604 if test "x$enable_tls" = xno ; then
2605 : # TLS explicitly disabled.
2606 elif test "x$enable_tls" = xyes ; then
2607 set_have_as_tls=yes # TLS explicitly enabled.
2608 elif test -z "$tls_first_major"; then
2609 : # If we don't have a check, assume no support.
2611 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2612 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2613 [set_have_as_tls=yes])
2615 if test $set_have_as_tls = yes ; then
2616 AC_DEFINE(HAVE_AS_TLS, 1,
2617 [Define if your assembler supports thread-local storage.])
2620 # Target-specific assembler checks.
2622 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2623 gcc_cv_ld_static_dynamic=no
2624 if test $in_tree_ld = yes ; then
2625 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2626 gcc_cv_ld_static_dynamic=yes
2628 elif test x$gcc_cv_ld != x; then
2629 # Check if linker supports -Bstatic/-Bdynamic option
2630 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2631 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2632 gcc_cv_ld_static_dynamic=yes
2635 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2636 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2637 [Define if your linker supports -Bstatic/-Bdynamic option.])
2639 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2641 if test x"$demangler_in_ld" = xyes; then
2642 AC_MSG_CHECKING(linker --demangle support)
2643 gcc_cv_ld_demangle=no
2644 if test $in_tree_ld = yes; then
2645 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2646 gcc_cv_ld_demangle=yes
2648 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2649 # Check if the GNU linker supports --demangle option
2650 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2651 gcc_cv_ld_demangle=yes
2654 if test x"$gcc_cv_ld_demangle" = xyes; then
2655 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2656 [Define if your linker supports --demangle option.])
2658 AC_MSG_RESULT($gcc_cv_ld_demangle)
2662 # All TARGET_ABI_OSF targets.
2663 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2664 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2665 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2668 extbl $3, $2, $3 !lituse_bytoff!1
2669 ldq $2, a($29) !literal!1
2670 ldq $4, b($29) !literal!2
2671 ldq_u $3, 0($2) !lituse_base!1
2672 ldq $27, f($29) !literal!5
2673 jsr $26, ($27), f !lituse_jsr!5
2674 ldah $29, 0($26) !gpdisp!3
2675 lda $0, c($29) !gprel
2676 ldah $1, d($29) !gprelhigh
2677 lda $1, d($1) !gprellow
2678 lda $29, 0($29) !gpdisp!3],,
2679 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2680 [Define if your assembler supports explicit relocations.])])
2681 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2682 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2685 ldq $27, a($29) !literal!1
2686 jsr $26, ($27), a !lituse_jsrdirect!1],,
2687 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2688 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2692 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2693 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2694 [-no-mul-bug-abort], [.text],,
2695 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2696 [Define if your assembler supports the -no-mul-bug-abort option.])])
2700 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2701 [.register %g2, #scratch],,
2702 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2703 [Define if your assembler supports .register.])])
2705 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2707 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2708 [Define if your assembler supports -relax option.])])
2710 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2711 gcc_cv_as_sparc_ua_pcrel,,
2719 .uaword %r_disp32(foo)],
2720 [if test x$gcc_cv_ld != x \
2721 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2722 gcc_cv_as_sparc_ua_pcrel=yes
2725 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2726 [Define if your assembler and linker support unaligned PC relative relocs.])
2728 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2729 gcc_cv_as_sparc_ua_pcrel_hidden,,
2734 .uaword %r_disp32(foo)
2735 .byte 0x32, 0x33, 0x34
2740 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2741 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2742 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2743 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2744 if $gcc_cv_objdump -R conftest 2> /dev/null \
2745 | grep 'DISP32' > /dev/null 2>&1; then
2748 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2752 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2753 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2754 ]) # unaligned pcrel relocs
2756 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2757 gcc_cv_as_sparc_offsetable_lo10,,
2760 or %g1, %lo(ab) + 12, %g1
2761 or %g1, %lo(ab + 12), %g1],
2762 [if test x$gcc_cv_objdump != x \
2763 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2764 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2765 gcc_cv_as_sparc_offsetable_lo10=yes
2767 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2768 [Define if your assembler supports offsetable %lo().])])
2772 i[34567]86-*-* | x86_64-*-*)
2775 cygwin* | pe | mingw32*)
2776 # Used for DWARF 2 in PE
2777 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2778 gcc_cv_as_ix86_pe_secrel32,
2784 [if test x$gcc_cv_ld != x \
2785 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2786 gcc_cv_as_ix86_pe_secrel32=yes
2789 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2790 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2794 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2795 gcc_cv_as_ix86_filds_fists,
2796 [2,9,0],, [filds mem; fists mem],,
2797 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2798 [Define if your assembler uses the new HImode fild and fist notation.])])
2800 gcc_GAS_CHECK_FEATURE([cmov syntax],
2801 gcc_cv_as_ix86_cmov_sun_syntax,,,
2802 [cmovl.l %edx, %eax],,
2803 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2804 [Define if your assembler supports the Sun syntax for cmov.])])
2806 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2807 gcc_cv_as_ix86_ffreep,,,
2809 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2810 [Define if your assembler supports the ffreep mnemonic.])])
2812 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2813 gcc_cv_as_ix86_sahf,,,
2815 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2816 [Define if your assembler supports the sahf mnemonic.])])
2818 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2819 gcc_cv_as_ix86_diff_sect_delta,,,
2827 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2828 [Define if your assembler supports the subtraction of symbols in different sections.])])
2830 # This one is used unconditionally by i386.[ch]; it is to be defined
2831 # to 1 if the feature is present, 0 otherwise.
2832 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2833 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2839 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2840 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2841 [Define true if the assembler supports '.long foo@GOTOFF'.])
2845 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2846 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2848 addl r15 = @ltoffx(x#), gp
2850 ld8.mov r16 = [[r15]], x#],,
2851 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2852 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2858 *-*-aix*) conftest_s=' .machine "pwr5"
2862 gcc_GAS_CHECK_FEATURE([.machine directive support],
2863 gcc_cv_as_machine_directive,,,
2864 [ .machine ppc7400])
2865 if test x$gcc_cv_as_machine_directive != xyes; then
2866 echo "*** This target requires an assembler supporting \".machine\"" >&2
2867 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2868 test x$build = x$target && exit 1
2872 *) conftest_s=' .machine power4
2877 gcc_GAS_CHECK_FEATURE([mfcr field support],
2878 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2880 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2881 [Define if your assembler supports mfcr field.])])
2884 *-*-aix*) conftest_s=' .machine "pwr5"
2887 *) conftest_s=' .machine power5
2892 gcc_GAS_CHECK_FEATURE([popcntb support],
2893 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2895 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2896 [Define if your assembler supports popcntb field.])])
2899 *-*-aix*) conftest_s=' .machine "pwr5x"
2902 *) conftest_s=' .machine power5
2907 gcc_GAS_CHECK_FEATURE([fp round support],
2908 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2910 [AC_DEFINE(HAVE_AS_FPRND, 1,
2911 [Define if your assembler supports fprnd.])])
2914 *-*-aix*) conftest_s=' .machine "pwr6"
2917 *) conftest_s=' .machine power6
2922 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2923 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2925 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2926 [Define if your assembler supports mffgpr and mftgpr.])])
2929 *-*-aix*) conftest_s=' .csect .text[[PR]]
2931 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2935 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2936 *) conftest_s=' .text
2938 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2941 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2942 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2944 [AC_DEFINE(HAVE_AS_REL16, 1,
2945 [Define if your assembler supports R_PPC_REL16 relocs.])])
2948 *-*-aix*) conftest_s=' .machine "pwr6"
2951 *) conftest_s=' .machine power6
2956 gcc_GAS_CHECK_FEATURE([compare bytes support],
2957 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2959 [AC_DEFINE(HAVE_AS_CMPB, 1,
2960 [Define if your assembler supports cmpb.])])
2963 *-*-aix*) conftest_s=' .machine "pwr6"
2966 *) conftest_s=' .machine power6
2971 gcc_GAS_CHECK_FEATURE([decimal float support],
2972 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2974 [AC_DEFINE(HAVE_AS_DFP, 1,
2975 [Define if your assembler supports DFP instructions.])])
2977 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2978 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2979 [.gnu_attribute 4,1],,
2980 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2981 [Define if your assembler supports .gnu_attribute.])])
2985 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2986 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2987 [ lw $4,%gp_rel(foo)($4)],,
2988 [if test x$target_cpu_default = x
2989 then target_cpu_default=MASK_EXPLICIT_RELOCS
2990 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2992 gcc_GAS_CHECK_FEATURE([-mno-shared support],
2993 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
2994 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
2995 [Define if the assembler understands -mno-shared.])])
2997 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2998 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
2999 [.gnu_attribute 4,1],,
3000 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3001 [Define if your assembler supports .gnu_attribute.])])
3003 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3004 gcc_cv_as_mips_dtprelword, [2,18,0],,
3005 [.section .tdata,"awT",@progbits
3009 .dtprelword x+0x8000],,
3010 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3011 [Define if your assembler supports .dtprelword.])])
3015 # Mips and HP-UX need the GNU assembler.
3016 # Linux on IA64 might be able to use the Intel assembler.
3019 mips*-*-* | *-*-hpux* )
3020 if test x$gas_flag = xyes \
3021 || test x"$host" != x"$build" \
3022 || test ! -x "$gcc_cv_as" \
3023 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3026 echo "*** This configuration requires the GNU assembler" >&2
3032 # ??? Not all targets support dwarf2 debug_line, even within a version
3033 # of gas. Moreover, we need to emit a valid instruction to trigger any
3034 # info to the output file. So, as supported targets are added to gas 2.11,
3035 # add some instruction here to (also) show we expect this might work.
3036 # ??? Once 2.11 is released, probably need to add first known working
3037 # version to the per-target configury.
3039 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3040 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3041 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3044 ia64*-*-* | s390*-*-*)
3051 if test x"$insn" != x; then
3053 .file 1 \"conftest.s\"
3056 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3057 gcc_cv_as_dwarf2_debug_line,
3058 [elf,2,11,0],, [$conftest_s],
3059 [if test x$gcc_cv_objdump != x \
3060 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3061 | grep debug_line > /dev/null 2>&1; then
3062 gcc_cv_as_dwarf2_debug_line=yes
3065 # The .debug_line file table must be in the exact order that
3066 # we specified the files, since these indices are also used
3067 # by DW_AT_decl_file. Approximate this test by testing if
3068 # the assembler bitches if the same index is assigned twice.
3069 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3070 gcc_cv_as_dwarf2_file_buggy,,,
3074 if test $gcc_cv_as_dwarf2_debug_line = yes \
3075 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3076 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3077 [Define if your assembler supports dwarf2 .file/.loc directives,
3078 and preserves file table indices exactly as given.])
3081 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3082 gcc_cv_as_gdwarf2_flag,
3083 [elf,2,11,0], [--gdwarf2], [$insn],,
3084 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3085 [Define if your assembler supports the --gdwarf2 option.])])
3087 gcc_GAS_CHECK_FEATURE([--gstabs option],
3088 gcc_cv_as_gstabs_flag,
3089 [elf,2,11,0], [--gstabs], [$insn],
3090 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3091 # and warns about it, but still exits successfully. So check for
3093 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3095 else gcc_cv_as_gstabs_flag=yes
3097 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3098 [Define if your assembler supports the --gstabs option.])])
3100 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3101 gcc_cv_as_debug_prefix_map_flag,
3102 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3103 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3104 [Define if your assembler supports the --debug-prefix-map option.])])
3107 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3108 [gcc_cv_as_line_zero],
3109 [gcc_cv_as_line_zero=no
3110 if test $in_tree_gas = yes; then
3111 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3112 elif test "x$gcc_cv_as" != x; then
3113 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3114 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3115 test "x`cat conftest.out`" = x
3117 gcc_cv_as_line_zero=yes
3119 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3120 cat conftest.s >&AS_MESSAGE_LOG_FD
3121 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3122 cat conftest.out >&AS_MESSAGE_LOG_FD
3124 rm -f conftest.o conftest.s conftest.out
3126 if test "x$gcc_cv_as_line_zero" = xyes; then
3127 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3128 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3131 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3132 gcc_cv_ld_ro_rw_mix=unknown
3133 if test $in_tree_ld = yes ; then
3134 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3135 && test $in_tree_ld_is_elf = yes; then
3136 gcc_cv_ld_ro_rw_mix=read-write
3138 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3139 echo '.section myfoosect, "a"' > conftest1.s
3140 echo '.section myfoosect, "aw"' > conftest2.s
3141 echo '.byte 1' >> conftest2.s
3142 echo '.section myfoosect, "a"' > conftest3.s
3143 echo '.byte 0' >> conftest3.s
3144 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3145 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3146 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3147 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3148 conftest2.o conftest3.o > /dev/null 2>&1; then
3149 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3150 | sed -e '/myfoosect/!d' -e N`
3151 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3152 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3153 gcc_cv_ld_ro_rw_mix=read-only
3155 gcc_cv_ld_ro_rw_mix=read-write
3160 rm -f conftest.* conftest[123].*
3163 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3164 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3165 [Define if your linker links a mix of read-only
3166 and read-write sections into a read-write section.])
3168 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3170 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3171 gcc_cv_ld_eh_frame_hdr=no
3172 if test $in_tree_ld = yes ; then
3173 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3174 && test $in_tree_ld_is_elf = yes; then
3175 gcc_cv_ld_eh_frame_hdr=yes
3177 elif test x$gcc_cv_ld != x; then
3178 # Check if linker supports --eh-frame-hdr option
3179 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3180 gcc_cv_ld_eh_frame_hdr=yes
3183 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3184 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3185 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3186 [Define if your linker supports --eh-frame-hdr option.])
3188 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3190 AC_MSG_CHECKING(linker position independent executable support)
3192 if test $in_tree_ld = yes ; then
3193 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3194 && test $in_tree_ld_is_elf = yes; then
3197 elif test x$gcc_cv_ld != x; then
3198 # Check if linker supports -pie option
3199 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3203 if test x"$gcc_cv_ld_pie" = xyes; then
3204 AC_DEFINE(HAVE_LD_PIE, 1,
3205 [Define if your linker supports -pie option.])
3207 AC_MSG_RESULT($gcc_cv_ld_pie)
3209 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3210 gcc_cv_ld_eh_gc_sections=no
3211 if test $in_tree_ld = yes ; then
3212 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3213 && test $in_tree_ld_is_elf = yes; then
3214 gcc_cv_ld_eh_gc_sections=yes
3216 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3217 cat > conftest.s <<EOF
3220 .type _start, @function
3223 .size _start, .-_start
3224 .section .text.foo,"ax",@progbits
3225 .type foo, @function
3229 .section .gcc_except_table.foo,"a",@progbits
3232 .section .eh_frame,"a",@progbits
3235 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3236 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3237 | grep "gc-sections option ignored" > /dev/null; then
3238 gcc_cv_ld_eh_gc_sections=no
3239 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3240 gcc_cv_ld_eh_gc_sections=yes
3241 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3242 if test x$gcc_cv_as_comdat_group != xyes; then
3243 gcc_cv_ld_eh_gc_sections=no
3244 cat > conftest.s <<EOF
3247 .type _start, @function
3250 .size _start, .-_start
3251 .section .gnu.linkonce.t.foo,"ax",@progbits
3252 .type foo, @function
3256 .section .gcc_except_table.foo,"a",@progbits
3259 .section .eh_frame,"a",@progbits
3262 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3263 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3264 | grep "gc-sections option ignored" > /dev/null; then
3265 gcc_cv_ld_eh_gc_sections=no
3266 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3267 gcc_cv_ld_eh_gc_sections=yes
3273 rm -f conftest.s conftest.o conftest
3277 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3278 gcc_cv_ld_eh_gc_sections=no
3281 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3282 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3283 [Define if your linker supports garbage collection of
3284 sections in presence of EH frames.])
3286 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3292 AC_CACHE_CHECK(linker --as-needed support,
3293 gcc_cv_ld_as_needed,
3294 [gcc_cv_ld_as_needed=no
3295 if test $in_tree_ld = yes ; then
3296 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3297 && test $in_tree_ld_is_elf = yes; then
3298 gcc_cv_ld_as_needed=yes
3300 elif test x$gcc_cv_ld != x; then
3301 # Check if linker supports --as-needed and --no-as-needed options
3302 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3303 gcc_cv_ld_as_needed=yes
3307 if test x"$gcc_cv_ld_as_needed" = xyes; then
3308 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3309 [Define if your linker supports --as-needed and --no-as-needed options.])
3312 case "$target:$tm_file" in
3313 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3314 AC_CACHE_CHECK(linker support for omitting dot symbols,
3315 gcc_cv_ld_no_dot_syms,
3316 [gcc_cv_ld_no_dot_syms=no
3317 if test $in_tree_ld = yes ; then
3318 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3319 gcc_cv_ld_no_dot_syms=yes
3321 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3322 cat > conftest1.s <<EOF
3326 cat > conftest2.s <<EOF
3327 .section ".opd","aw"
3332 .quad .LEfoo,.TOC.@tocbase,0
3338 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3339 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3340 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3341 gcc_cv_ld_no_dot_syms=yes
3343 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3346 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3347 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3348 [Define if your PowerPC64 linker only needs function descriptor syms.])
3353 AC_CACHE_CHECK(linker --sysroot support,
3355 [gcc_cv_ld_sysroot=no
3356 if test $in_tree_ld = yes ; then
3357 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3358 gcc_cv_ld_sysroot=yes
3360 elif test x$gcc_cv_ld != x; then
3361 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3362 gcc_cv_ld_sysroot=yes
3365 if test x"$gcc_cv_ld_sysroot" = xyes; then
3366 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3367 [Define if your linker supports --sysroot.])
3370 if test x$with_sysroot = x && test x$host = x$target \
3371 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3372 && test "$prefix" != "NONE"; then
3373 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3374 [Define to PREFIX/include if cpp should also search that directory.])
3377 # Test for stack protector support in target C library.
3378 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3379 gcc_cv_libc_provides_ssp,
3380 [gcc_cv_libc_provides_ssp=no
3383 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3384 if test "x$with_sysroot" = x; then
3385 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3386 elif test "x$with_build_sysroot" != "x"; then
3387 glibc_header_dir="${with_build_sysroot}/usr/include"
3388 elif test "x$with_sysroot" = xyes; then
3389 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3391 glibc_header_dir="${with_sysroot}/usr/include"
3394 glibc_header_dir=/usr/include
3396 # glibc 2.4 and later provides __stack_chk_fail and
3397 # either __stack_chk_guard, or TLS access to stack guard canary.
3398 if test -f $glibc_header_dir/features.h \
3399 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3400 $glibc_header_dir/features.h > /dev/null; then
3401 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3402 $glibc_header_dir/features.h > /dev/null; then
3403 gcc_cv_libc_provides_ssp=yes
3404 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3405 $glibc_header_dir/features.h > /dev/null \
3406 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3407 $glibc_header_dir/features.h > /dev/null; then
3408 gcc_cv_libc_provides_ssp=yes
3409 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3410 $glibc_header_dir/features.h > /dev/null && \
3411 test -f $glibc_header_dir/bits/uClibc_config.h && \
3412 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3413 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3414 gcc_cv_libc_provides_ssp=yes
3419 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3420 [echo "no __stack_chk_fail on this target"])
3422 *) gcc_cv_libc_provides_ssp=no ;;
3425 if test x$gcc_cv_libc_provides_ssp = xyes; then
3426 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3427 [Define if your target C library provides stack protector support])
3430 # Check if TFmode long double should be used by default or not.
3431 # Some glibc targets used DFmode long double, but with glibc 2.4
3432 # and later they can use TFmode.
3434 powerpc*-*-linux* | \
3439 AC_ARG_WITH(long-double-128,
3440 [ --with-long-double-128 Use 128-bit long double by default.],
3441 gcc_cv_target_ldbl128="$with_long_double_128",
3442 [gcc_cv_target_ldbl128=no
3443 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3444 if test "x$with_sysroot" = x; then
3445 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3446 elif test "x$with_build_sysroot" != "x"; then
3447 glibc_header_dir="${with_build_sysroot}/usr/include"
3448 elif test "x$with_sysroot" = xyes; then
3449 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3451 glibc_header_dir="${with_sysroot}/usr/include"
3454 glibc_header_dir=/usr/include
3457 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3458 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3459 && gcc_cv_target_ldbl128=yes
3464 if test x$gcc_cv_target_ldbl128 = xyes; then
3465 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3466 [Define if TFmode long double should be the default])
3469 # Find out what GC implementation we want, or may, use.
3471 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3479 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3482 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3487 echo "Using $GGC for garbage collection."
3489 # Use the system's zlib library.
3491 zlibinc="-I\$(srcdir)/../zlib"
3492 AC_ARG_WITH(system-zlib,
3493 [ --with-system-zlib use installed libz],
3500 dnl Very limited version of automake's enable-maintainer-mode
3502 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3503 dnl maintainer-mode is disabled by default
3504 AC_ARG_ENABLE(maintainer-mode,
3505 [ --enable-maintainer-mode
3506 enable make rules and dependencies not useful
3507 (and sometimes confusing) to the casual installer],
3508 maintainer_mode=$enableval,
3511 AC_MSG_RESULT($maintainer_mode)
3513 if test "$maintainer_mode" = "yes"; then
3524 # Make empty files to contain the specs and options for each language.
3525 # Then add #include lines to for a compiler that has specs and/or options.
3531 # These (without "all_") are set in each config-lang.in.
3532 # `language' must be a single word so is spelled singularly.
3535 all_outputs='Makefile gccbug libada-mk'
3536 # List of language makefile fragments.
3538 # List of language subdirectory makefiles. Deprecated.
3540 # Additional files for gengtype
3541 all_gtfiles="$target_gtfiles"
3543 # These are the languages that are set in --enable-languages,
3544 # and are available in the GCC tree.
3545 all_selected_languages=
3547 # Add the language fragments.
3548 # Languages are added via two mechanisms. Some information must be
3549 # recorded in makefile variables, these are defined in config-lang.in.
3550 # We accumulate them and plug them into the main Makefile.
3551 # The other mechanism is a set of hooks for each of the main targets
3552 # like `clean', `install', etc.
3554 language_hooks="Make-hooks"
3556 for lang in ${srcdir}/*/config-lang.in
3559 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3561 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3562 if test "x$lang_alias" = x
3564 echo "$lang doesn't set \$language." 1>&2
3567 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3568 subdirs="$subdirs $subdir"
3569 case ",$enable_languages," in
3571 all_selected_languages="$all_selected_languages $lang_alias"
3572 if test -f $srcdir/$subdir/lang-specs.h; then
3573 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3585 . ${srcdir}/$subdir/config-lang.in
3586 if test "x$language" = x
3588 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3593 case ",$enable_languages," in
3596 for i in $subdir_requires; do
3597 test -f "${srcdir}/$i/config-lang.in" && continue
3605 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3606 if test -f $srcdir/$subdir/lang.opt; then
3607 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3609 if test -f $srcdir/$subdir/$subdir-tree.def; then
3610 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3612 if test -f ${srcdir}/$subdir/Makefile.in
3613 then all_lang_makefiles="$subdir/Makefile"
3615 all_languages="$all_languages $language"
3616 all_compilers="$all_compilers $compilers"
3617 all_outputs="$all_outputs $outputs"
3618 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3621 # Pick up gtfiles for c
3623 . ${srcdir}/c-config-lang.in
3624 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3627 for language in $all_selected_languages
3629 check_languages="$check_languages check-$language"
3632 # We link each language in with a set of hooks, reached indirectly via
3633 # lang.${target}. Only do so for selected languages.
3637 target_list="all.cross start.encap rest.encap tags \
3638 install-common install-man install-info install-pdf dvi pdf \
3639 html uninstall info man srcextra srcman srcinfo \
3640 mostlyclean clean distclean maintainer-clean"
3642 for t in $target_list
3645 for lang in $all_selected_languages
3649 echo "lang.$t: $x" >> Make-hooks
3658 echo "dir ." > .gdbinit
3659 echo "dir ${srcdir}" >> .gdbinit
3660 if test x$gdb_needs_out_file_path = xyes
3662 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3664 if test "x$subdirs" != x; then
3667 echo "dir ${srcdir}/$s" >> .gdbinit
3670 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3672 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3673 AC_SUBST(gcc_tooldir)
3676 # Find a directory in which to install a shared libgcc.
3678 AC_ARG_ENABLE(version-specific-runtime-libs,
3679 [ --enable-version-specific-runtime-libs
3680 specify that runtime libraries should be
3681 installed in a compiler-specific directory])
3683 AC_ARG_WITH(slibdir,
3684 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3685 slibdir="$with_slibdir",
3686 if test "${enable_version_specific_runtime_libs+set}" = set; then
3687 slibdir='$(libsubdir)'
3688 elif test "$host" != "$target"; then
3689 slibdir='$(build_tooldir)/lib'
3695 objdir=`${PWDCMD-pwd}`
3698 AC_ARG_WITH(datarootdir,
3699 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3700 datarootdir="\${prefix}/$with_datarootdir",
3701 datarootdir='$(prefix)/share')
3702 AC_SUBST(datarootdir)
3705 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3706 docdir="\${prefix}/$with_docdir",
3707 docdir='$(datarootdir)')
3710 AC_ARG_WITH(htmldir,
3711 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3712 htmldir="\${prefix}/$with_htmldir",
3713 htmldir='$(docdir)')
3716 # Substitute configuration variables
3719 AC_SUBST(all_compilers)
3720 AC_SUBST(all_gtfiles)
3721 AC_SUBST(all_lang_makefrags)
3722 AC_SUBST(all_lang_makefiles)
3723 AC_SUBST(all_languages)
3724 AC_SUBST(all_selected_languages)
3725 AC_SUBST(build_exeext)
3726 AC_SUBST(build_install_headers_dir)
3727 AC_SUBST(build_xm_file_list)
3728 AC_SUBST(build_xm_include_list)
3729 AC_SUBST(build_xm_defines)
3730 AC_SUBST(check_languages)
3731 AC_SUBST(cpp_install_dir)
3732 AC_SUBST(xmake_file)
3733 AC_SUBST(tmake_file)
3734 AC_SUBST(extra_gcc_objs)
3735 AC_SUBST(extra_headers_list)
3736 AC_SUBST(extra_objs)
3737 AC_SUBST(extra_parts)
3738 AC_SUBST(extra_passes)
3739 AC_SUBST(extra_programs)
3740 AC_SUBST(float_h_file)
3741 AC_SUBST(gcc_config_arguments)
3742 AC_SUBST(gcc_gxx_include_dir)
3743 AC_SUBST(host_exeext)
3744 AC_SUBST(host_xm_file_list)
3745 AC_SUBST(host_xm_include_list)
3746 AC_SUBST(host_xm_defines)
3747 AC_SUBST(out_host_hook_obj)
3749 AC_SUBST(lang_opt_files)
3750 AC_SUBST(lang_specs_files)
3751 AC_SUBST(lang_tree_files)
3752 AC_SUBST(local_prefix)
3754 AC_SUBST(objc_boehm_gc)
3756 AC_SUBST(out_object_file)
3757 AC_SUBST(thread_file)
3758 AC_SUBST(tm_file_list)
3759 AC_SUBST(tm_include_list)
3760 AC_SUBST(tm_defines)
3761 AC_SUBST(tm_p_file_list)
3762 AC_SUBST(tm_p_include_list)
3763 AC_SUBST(xm_file_list)
3764 AC_SUBST(xm_include_list)
3765 AC_SUBST(xm_defines)
3766 AC_SUBST(c_target_objs)
3767 AC_SUBST(cxx_target_objs)
3768 AC_SUBST(target_cpu_default)
3770 AC_SUBST_FILE(language_hooks)
3773 if test x${build} = x${host} ; then
3774 if test x${host} = x${target} ; then
3775 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3777 echo "Links are now set up to build a cross-compiler" 1>&2
3778 echo " from ${host} to ${target}." 1>&2
3781 if test x${host} = x${target} ; then
3782 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3783 echo " for ${target}." 1>&2
3785 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3786 echo " from ${host} to ${target}." 1>&2
3790 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3791 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3793 # Configure the subdirectories
3794 # AC_CONFIG_SUBDIRS($subdirs)
3796 # Create the Makefile
3797 # and configure language subdirectories
3798 AC_CONFIG_FILES($all_outputs)
3800 AC_CONFIG_COMMANDS([default],
3802 case ${CONFIG_HEADERS} in
3803 *auto-host.h:config.in*)
3806 # Make sure all the subdirs exist.
3807 for d in $subdirs doc build
3809 test -d $d || mkdir $d
3812 [subdirs='$subdirs'])