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 ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 ACX_PROG_GNAT([-I"$srcdir"/ada])
281 # autoconf is lame and doesn't give us any substitution variable for this.
282 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
283 NO_MINUS_C_MINUS_O=yes
285 OUTPUT_OPTION='-o $@'
287 AC_SUBST(NO_MINUS_C_MINUS_O)
288 AC_SUBST(OUTPUT_OPTION)
290 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
291 # optimizations to be activated explicitly by the toplevel.
294 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
306 # sizeof(char) is 1 by definition.
307 AC_CHECK_SIZEOF(void *)
308 AC_CHECK_SIZEOF(short)
310 AC_CHECK_SIZEOF(long)
311 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
312 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
314 # ---------------------
315 # Warnings and checking
316 # ---------------------
318 # Check $CC warning features (if it's GCC).
319 # We want to use -pedantic, but we don't want warnings about
323 # So, we only use -pedantic if we can disable those warnings.
325 ACX_PROG_CC_WARNING_OPTS(
326 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
327 [-Wmissing-prototypes -Wcast-qual])), [loose_warn])
328 ACX_PROG_CC_WARNING_OPTS(
329 m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
330 [-Wmissing-format-attribute])), [strict_warn])
331 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
332 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
333 [-Wno-overlength-strings])), [strict_warn])
334 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
336 # The above macros do nothing if the compiler is not GCC. However, the
337 # Makefile has more goo to add other flags, so this variabl is used to
338 # enables warnings only for GCC.
340 if test "x$GCC" = "xyes"; then
341 warn_cflags='$(GCC_WARN_CFLAGS)'
343 AC_SUBST(warn_cflags)
345 # Enable expensive internal checks
347 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
351 AC_ARG_ENABLE(checking,
352 [ --enable-checking[=LIST]
353 enable expensive run-time checks. With LIST,
354 enable only specific categories of checks.
355 Categories are: yes,no,all,none,release.
356 Flags are: assert,df,fold,gc,gcac,gimple,misc,
357 rtlflag,rtl,runtime,tree,valgrind,types.],
358 [ac_checking_flags="${enableval}"],[
359 # Determine the default checks.
360 if test x$is_release = x ; then
361 ac_checking_flags=yes
363 ac_checking_flags=release
365 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
366 for check in release $ac_checking_flags
369 # these set all the flags to specific states
370 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
371 ac_fold_checking= ; ac_gc_checking=1 ;
372 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
373 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
374 ac_tree_checking=1 ; ac_valgrind_checking= ;
375 ac_types_checking=1 ;;
376 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
377 ac_fold_checking= ; ac_gc_checking= ;
378 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
379 ac_rtlflag_checking= ; ac_runtime_checking= ;
380 ac_tree_checking= ; ac_valgrind_checking= ;
381 ac_types_checking= ;;
382 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
383 ac_fold_checking=1 ; ac_gc_checking=1 ;
384 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
385 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
386 ac_tree_checking=1 ; ac_valgrind_checking= ;
387 ac_types_checking=1 ;;
388 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
389 ac_fold_checking= ; ac_gc_checking= ;
390 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
391 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
392 ac_tree_checking= ; ac_valgrind_checking= ;
393 ac_types_checking= ;;
394 # these enable particular checks
395 assert) ac_assert_checking=1 ;;
396 df) ac_df_checking=1 ;;
397 fold) ac_fold_checking=1 ;;
398 gc) ac_gc_checking=1 ;;
399 gcac) ac_gc_always_collect=1 ;;
400 gimple) ac_gimple_checking=1 ;;
401 misc) ac_checking=1 ;;
402 rtl) ac_rtl_checking=1 ;;
403 rtlflag) ac_rtlflag_checking=1 ;;
404 runtime) ac_runtime_checking=1 ;;
405 tree) ac_tree_checking=1 ;;
406 types) ac_types_checking=1 ;;
407 valgrind) ac_valgrind_checking=1 ;;
408 *) AC_MSG_ERROR(unknown check category $check) ;;
414 if test x$ac_checking != x ; then
415 AC_DEFINE(ENABLE_CHECKING, 1,
416 [Define if you want more run-time sanity checks. This one gets a grab
417 bag of miscellaneous but relatively cheap checks.])
418 nocommon_flag=-fno-common
420 AC_SUBST(nocommon_flag)
421 if test x$ac_df_checking != x ; then
422 AC_DEFINE(ENABLE_DF_CHECKING, 1,
423 [Define if you want more run-time sanity checks for dataflow.])
425 if test x$ac_assert_checking != x ; then
426 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
427 [Define if you want assertions enabled. This is a cheap check.])
429 if test x$ac_gimple_checking != x ; then
430 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
431 [Define if you want operations on GIMPLE (the basic data structure of
432 the high-level optimizers) to be checked for dynamic type safety at
433 runtime. This is moderately expensive.])
435 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
436 if test x$ac_runtime_checking != x ; then
437 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
438 [Define if you want runtime assertions enabled. This is a cheap check.])
440 if test x$ac_tree_checking != x ; then
441 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
442 [Define if you want all operations on trees (the basic data
443 structure of the front ends) to be checked for dynamic type safety
444 at runtime. This is moderately expensive. The tree browser debugging
445 routines will also be enabled by this option.
447 TREEBROWSER=tree-browser.o
449 if test x$ac_types_checking != x ; then
450 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
451 [Define if you want all gimple types to be verified after gimplifiation.
455 AC_SUBST(TREEBROWSER)
456 if test x$ac_rtl_checking != x ; then
457 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
458 [Define if you want all operations on RTL (the basic data structure
459 of the optimizer and back end) to be checked for dynamic type safety
460 at runtime. This is quite expensive.])
462 if test x$ac_rtlflag_checking != x ; then
463 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
464 [Define if you want RTL flag accesses to be checked against the RTL
465 codes that are supported for each access macro. This is relatively
468 if test x$ac_gc_checking != x ; then
469 AC_DEFINE(ENABLE_GC_CHECKING, 1,
470 [Define if you want the garbage collector to do object poisoning and
471 other memory allocation checks. This is quite expensive.])
473 if test x$ac_gc_always_collect != x ; then
474 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
475 [Define if you want the garbage collector to operate in maximally
476 paranoid mode, validating the entire heap and collecting garbage at
477 every opportunity. This is extremely expensive.])
479 if test x$ac_fold_checking != x ; then
480 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
481 [Define if you want fold checked that it never destructs its argument.
482 This is quite expensive.])
484 valgrind_path_defines=
487 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
488 dnl # an if statement. This was the source of very frustrating bugs
489 dnl # in converting to autoconf 2.5x!
490 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
492 if test x$ac_valgrind_checking != x ; then
493 # It is certainly possible that there's valgrind but no valgrind.h.
494 # GCC relies on making annotations so we must have both.
495 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
496 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
497 [[#include <valgrind/memcheck.h>
498 #ifndef VALGRIND_DISCARD
499 #error VALGRIND_DISCARD not defined
501 [gcc_cv_header_valgrind_memcheck_h=yes],
502 [gcc_cv_header_valgrind_memcheck_h=no])
503 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
504 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
505 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
506 [[#include <memcheck.h>
507 #ifndef VALGRIND_DISCARD
508 #error VALGRIND_DISCARD not defined
510 [gcc_cv_header_memcheck_h=yes],
511 [gcc_cv_header_memcheck_h=no])
512 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
513 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
514 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
515 if test "x$valgrind_path" = "x" \
516 || (test $have_valgrind_h = no \
517 && test $gcc_cv_header_memcheck_h = no \
518 && test $gcc_cv_header_valgrind_memcheck_h = no); then
519 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
521 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
522 valgrind_command="$valgrind_path -q"
523 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
524 [Define if you want to run subprograms and generated programs
525 through valgrind (a memory checker). This is extremely expensive.])
526 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
527 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
528 [Define if valgrind's valgrind/memcheck.h header is installed.])
530 if test $gcc_cv_header_memcheck_h = yes; then
531 AC_DEFINE(HAVE_MEMCHECK_H, 1,
532 [Define if valgrind's memcheck.h header is installed.])
535 AC_SUBST(valgrind_path_defines)
536 AC_SUBST(valgrind_command)
538 # Enable code coverage collection
539 AC_ARG_ENABLE(coverage,
540 [ --enable-coverage[=LEVEL]
541 enable compiler's code coverage collection.
542 Use to measure compiler performance and locate
543 unused parts of the compiler. With LEVEL, specify
544 optimization. Values are opt, noopt,
546 [case "${enableval}" in
548 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
551 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
554 # a.k.a. --disable-coverage
558 AC_MSG_ERROR(unknown coverage setting $enableval)
562 AC_SUBST(coverage_flags)
564 AC_ARG_ENABLE(gather-detailed-mem-stats,
565 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
566 [enable_gather_detailed_mem_stats=no])
567 if test x$enable_gather_detailed_mem_stats = xyes ; then
568 AC_DEFINE(GATHER_STATISTICS, 1,
569 [Define to enable detailed memory allocation stats gathering.])
572 # -------------------------------
573 # Miscenalleous configure options
574 # -------------------------------
578 [ --with-stabs arrange to use stabs instead of host debug format],
582 # Determine whether or not multilibs are enabled.
583 AC_ARG_ENABLE(multilib,
584 [ --enable-multilib enable library support for multiple ABIs],
585 [], [enable_multilib=yes])
586 AC_SUBST(enable_multilib)
588 # Enable __cxa_atexit for C++.
589 AC_ARG_ENABLE(__cxa_atexit,
590 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
593 # Enable C extension for decimal float if target supports it.
594 AC_ARG_ENABLE(decimal-float,
595 [ --enable-decimal-float={no,yes,bid,dpd}
596 enable decimal float extension to C. Selecting 'bid'
597 or 'dpd' choses which decimal floating point format
600 case $enable_decimal_float in
601 yes | no | bid | dpd) ;;
602 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
603 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
608 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
609 enable_decimal_float=yes
612 AC_MSG_WARN(decimal float is not supported for this target, ignored)
613 enable_decimal_float=no
618 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
620 [Define to 1 to enable decimal float extension to C.])
622 # x86's use BID format instead of DPD
623 case x$enable_decimal_float in
626 i?86*-*-linux* | x86_64*-*-linux*)
627 enable_decimal_float=bid
630 enable_decimal_float=dpd
635 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
636 # dependency on libdecnumber.
637 enable_decimal_float=dpd
640 AC_SUBST(enable_decimal_float)
642 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
643 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
644 [Define to 1 to specify that we are using the BID decimal floating
645 point format instead of DPD])
647 # Enable C extension for fixed-point arithmetic.
648 AC_ARG_ENABLE(fixed-point,
649 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
657 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
658 enable_fixed_point=no
661 enable_fixed_point=yes
666 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
667 enable_fixed_point=no
671 AC_SUBST(enable_fixed_point)
673 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
674 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
675 [Define to 1 to enable fixed-point arithmetic extension to C.])
678 # Pass with no value to take the default
679 # Pass with a value to specify a thread package
680 AC_ARG_ENABLE(threads,
681 [ --enable-threads enable thread usage for target GCC
682 --enable-threads=LIB use LIB thread package for target GCC],,
686 [ --enable-tls enable or disable generation of tls code
687 overriding the assembler check for tls support],
691 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
692 Valid choices are 'yes' and 'no'.]) ;;
696 AC_ARG_ENABLE(objc-gc,
697 [ --enable-objc-gc enable the use of Boehm's garbage collector with
698 the GNU Objective-C runtime],
699 if test x$enable_objc_gc = xno; then
707 [ --with-dwarf2 force the default debug format to be DWARF 2],
708 dwarf2="$with_dwarf2",
711 AC_ARG_ENABLE(shared,
712 [ --disable-shared don't provide a shared libgcc],
714 case $enable_shared in
718 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
719 for pkg in $enableval; do
720 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
727 ], [enable_shared=yes])
728 AC_SUBST(enable_shared)
730 AC_ARG_WITH(build-sysroot,
731 [ --with-build-sysroot=sysroot
732 use sysroot as the system root during the build])
735 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
737 case ${with_sysroot} in
738 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
739 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
742 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
743 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
745 if test "x$prefix" = xNONE; then
746 test_prefix=/usr/local
750 if test "x$exec_prefix" = xNONE; then
751 test_exec_prefix=$test_prefix
753 test_exec_prefix=$exec_prefix
755 case ${TARGET_SYSTEM_ROOT} in
756 "${test_prefix}"|"${test_prefix}/"*|\
757 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
758 '${prefix}'|'${prefix}/'*|\
759 '${exec_prefix}'|'${exec_prefix}/'*)
760 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
761 TARGET_SYSTEM_ROOT_DEFINE="$t"
766 TARGET_SYSTEM_ROOT_DEFINE=
767 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
769 AC_SUBST(TARGET_SYSTEM_ROOT)
770 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
771 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
773 # Build with intermodule optimisations
774 AC_ARG_ENABLE(intermodule,
775 [ --enable-intermodule build the compiler in one step],
776 [case ${enable_intermodule} in
777 yes) onestep="-onestep";;
783 ACX_PKGVERSION([GCC])
784 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
786 # Sanity check enable_languages in case someone does not run the toplevel
787 # configure # script.
788 AC_ARG_ENABLE(languages,
789 [ --enable-languages=LIST specify which front-ends to build],
790 [case ,${enable_languages}, in
792 # go safe -- we cannot be much sure without the toplevel
794 # analysis of which target libs are present and usable
798 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
803 enable_languages=c,${enable_languages}
806 [enable_languages=c])
808 # Used by documentation targets
809 AC_SUBST(datarootdir)
813 # -------------------------
814 # Checks for other programs
815 # -------------------------
819 # Find some useful tools
821 # We need awk to create options.c and options.h.
822 # Bail out if it's missing.
824 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
832 # By default, the Darwin ranlib will not treat common symbols as
833 # definitions when building the archive table of contents. Other
834 # ranlibs do that; pass an option to the Darwin ranlib that makes
835 # it behave similarly.
841 AC_SUBST(ranlib_flags)
845 # See if cmp has --ignore-initial.
846 gcc_AC_PROG_CMP_IGNORE_INITIAL
848 # See if we have the mktemp command.
849 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
851 # See if makeinfo has been installed and is modern enough
852 # that we can use it.
853 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
854 [GNU texinfo.* \([0-9][0-9.]*\)],
855 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
856 if test $gcc_cv_prog_makeinfo_modern = no; then
858 *** Makeinfo is missing or too old.
859 *** Info documentation will not be built.])
866 # Is pod2man recent enough to regenerate manpages?
867 AC_MSG_CHECKING([for recent Pod::Man])
868 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
870 GENERATED_MANPAGES=generated-manpages
875 AC_SUBST(GENERATED_MANPAGES)
877 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
880 dnl Don't use AC_PROG_LEX; we insist on flex.
881 dnl LEXLIB is not useful in gcc.
882 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
885 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
887 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
888 # check for build == host before using them.
891 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
892 && test -d ../binutils ; then
893 NM='$(objdir)/../binutils/nm-new'
895 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
899 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
900 && test -d ../binutils ; then
901 AR='$(objdir)/../binutils/ar'
903 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
907 # --------------------
908 # Checks for C headers
909 # --------------------
911 # Need to reject headers which give warnings, so that the -Werror bootstrap
912 # works later. *sigh* This needs to come before all header checks.
919 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
920 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
921 sys/resource.h sys/param.h sys/times.h sys/stat.h \
922 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
924 # Check for thread headers.
925 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
926 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
928 # These tests can't be done till we know if we have limits.h.
937 # These libraries may be used by collect2.
938 # We may need a special search path to get them linked.
939 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
941 for libs in '' -lld -lmld \
942 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
943 '-L/usr/lib/cmplrs/cc3.11 -lmld'
946 AC_TRY_LINK_FUNC(ldopen,
947 [gcc_cv_collect2_libs="$libs"; break])
950 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
951 case $gcc_cv_collect2_libs in
953 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
955 AC_SUBST(COLLECT2_LIBS)
957 # When building Ada code on Alpha, we need exc_resume which is usually in
958 # -lexc. So test for it.
961 AC_SEARCH_LIBS(exc_resume, exc)
964 AC_SUBST(GNAT_LIBEXC)
966 # Some systems put ldexp and frexp in libm instead of libc; assume
967 # they're both in the same place. jcf-dump needs them.
970 AC_SEARCH_LIBS(ldexp, m)
975 # Use <inttypes.h> only if it exists,
976 # doesn't clash with <sys/types.h>, and declares intmax_t.
977 AC_MSG_CHECKING(for inttypes.h)
978 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
979 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
980 [[#include <sys/types.h>
981 #include <inttypes.h>]],
982 [[intmax_t i = -1;]])],
983 [gcc_cv_header_inttypes_h=yes],
984 [gcc_cv_header_inttypes_h=no])])
985 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
986 if test $gcc_cv_header_inttypes_h = yes; then
987 AC_DEFINE(HAVE_INTTYPES_H, 1,
988 [Define if you have a working <inttypes.h> header file.])
991 dnl Disabled until we have a complete test for buggy enum bitfields.
992 dnl gcc_AC_C_ENUM_BF_UNSIGNED
994 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
995 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
996 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
997 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
998 putchar_unlocked putc_unlocked)
999 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1000 sysconf strsignal getrusage nl_langinfo \
1001 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1004 if test x$ac_cv_func_mbstowcs = xyes; then
1005 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1006 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1012 [gcc_cv_func_mbstowcs_works=yes],
1013 [gcc_cv_func_mbstowcs_works=no],
1014 [gcc_cv_func_mbstowcs_works=yes])])
1015 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1016 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1017 [Define this macro if mbstowcs does not crash when its
1018 first argument is NULL.])
1022 AC_CHECK_TYPE(ssize_t, int)
1023 AC_CHECK_TYPE(caddr_t, char *)
1025 # Try to determine the array type of the second argument of getgroups
1026 # for the target system (int or gid_t).
1028 if test "${target}" = "${build}"; then
1029 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1032 # This condition may need some tweaking. It should include all
1033 # targets where the array type of the second argument of getgroups
1034 # is int and the type of gid_t is not equivalent to int.
1035 *-*-sunos* | *-*-ultrix*)
1036 TARGET_GETGROUPS_T=int
1039 TARGET_GETGROUPS_T=gid_t
1043 AC_SUBST(TARGET_GETGROUPS_T)
1045 gcc_AC_FUNC_MMAP_BLACKLIST
1049 # Under VMS, vfork works very differently than on Unix. The standard test
1050 # won't work, and it isn't easily adaptable. It makes more sense to
1052 ac_cv_func_vfork_works=yes
1058 # Until we have in-tree GNU iconv:
1060 AC_SUBST(LIBICONV_DEP)
1066 # We will need to find libiberty.h and ansidecl.h
1067 saved_CFLAGS="$CFLAGS"
1068 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1069 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1070 strsignal strstr strverscmp \
1071 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1072 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1073 #include "ansidecl.h"
1074 #include "system.h"])
1076 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1077 #include "ansidecl.h"
1079 #ifdef HAVE_SYS_RESOURCE_H
1080 #include <sys/resource.h>
1084 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_RESOURCE_H
1088 #include <sys/resource.h>
1090 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1091 [Define to `long' if <sys/resource.h> doesn't define.])])
1093 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1094 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1095 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1096 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1097 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1098 #include "ansidecl.h"
1107 gcc_AC_CHECK_DECLS(times, , ,[
1108 #include "ansidecl.h"
1110 #ifdef HAVE_SYS_TIMES_H
1111 #include <sys/times.h>
1115 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1116 #include "ansidecl.h"
1121 # More time-related stuff.
1122 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1123 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1124 #include "ansidecl.h"
1126 #ifdef HAVE_SYS_TIMES_H
1127 #include <sys/times.h>
1129 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1130 if test $ac_cv_struct_tms = yes; then
1131 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1132 [Define if <sys/times.h> defines struct tms.])
1135 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1136 # revisit after autoconf 2.50.
1137 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1138 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1139 #include "ansidecl.h"
1141 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1142 if test $gcc_cv_type_clock_t = yes; then
1143 AC_DEFINE(HAVE_CLOCK_T, 1,
1144 [Define if <time.h> defines clock_t.])
1147 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1148 CFLAGS="$saved_CFLAGS"
1150 gcc_AC_INITFINI_ARRAY
1152 # mkdir takes a single argument on some systems.
1153 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1161 # With Setjmp/Longjmp based exception handling.
1162 AC_ARG_ENABLE(sjlj-exceptions,
1163 [ --enable-sjlj-exceptions
1164 arrange to use setjmp/longjmp exception handling],
1167 if test $enableval != yes; then
1168 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1173 force_sjlj_exceptions=yes],
1176 force_sjlj_exceptions=yes
1180 force_sjlj_exceptions=no
1183 if test $force_sjlj_exceptions = yes; then
1184 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1185 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1186 [Define 0/1 to force the choice for exception handling model.])
1189 # For platforms with the unwind ABI which includes an unwind library,
1190 # libunwind, we can choose to use the system libunwind.
1191 AC_ARG_WITH(system-libunwind,
1192 [ --with-system-libunwind use installed libunwind])
1194 # config.gcc also contains tests of with_system_libunwind.
1195 if test x$with_system_libunwind = xyes; then
1196 AC_DEFINE(HAVE_GETIPINFO, 1,
1197 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1200 # --------------------------------------------------------
1201 # Build, host, and target specific configuration fragments
1202 # --------------------------------------------------------
1204 # Collect build-machine-specific information.
1205 . ${srcdir}/config.build
1207 # Collect host-machine-specific information.
1208 . ${srcdir}/config.host
1212 # Collect target-machine-specific information.
1213 . ${srcdir}/config.gcc
1215 extra_objs="${host_extra_objs} ${extra_objs}"
1216 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1218 # Default the target-machine variables that were not explicitly set.
1219 if test x"$tm_file" = x
1220 then tm_file=$cpu_type/$cpu_type.h; fi
1222 if test x"$extra_headers" = x
1223 then extra_headers=; fi
1225 if test x$md_file = x
1226 then md_file=$cpu_type/$cpu_type.md; fi
1228 if test x$out_file = x
1229 then out_file=$cpu_type/$cpu_type.c; fi
1231 if test x"$tmake_file" = x
1232 then tmake_file=$cpu_type/t-$cpu_type
1235 if test x"$dwarf2" = xyes
1236 then tm_file="$tm_file tm-dwarf2.h"
1239 # Say what files are being used for the output code and MD file.
1240 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1241 echo "Using \`$srcdir/config/$md_file' as machine description file."
1243 # If any of the xm_file variables contain nonexistent files, warn
1244 # about them and drop them.
1247 for x in $build_xm_file; do
1248 if test -f $srcdir/config/$x
1250 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1256 for x in $host_xm_file; do
1257 if test -f $srcdir/config/$x
1259 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1265 for x in $xm_file; do
1266 if test -f $srcdir/config/$x
1268 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1274 for f in $tm_file; do
1277 if test $count = ax; then
1278 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1280 echo "Using the following target machine macro files:"
1281 for f in $tm_file; do
1282 echo " $srcdir/config/$f"
1286 if test x$need_64bit_hwint = xyes; then
1287 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1288 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1291 if test x$use_long_long_for_widest_fast_int = xyes; then
1292 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1293 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1294 efficiently supported by the host hardware.])
1298 for f in $host_xm_file; do
1301 if test $count = a; then
1303 elif test $count = ax; then
1304 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1306 echo "Using the following host machine macro files:"
1307 for f in $host_xm_file; do
1308 echo " $srcdir/config/$f"
1311 echo "Using ${out_host_hook_obj} for host machine hooks."
1313 if test "$host_xm_file" != "$build_xm_file"; then
1315 for f in $build_xm_file; do
1318 if test $count = a; then
1320 elif test $count = ax; then
1321 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1323 echo "Using the following build machine macro files:"
1324 for f in $build_xm_file; do
1325 echo " $srcdir/config/$f"
1332 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1333 gcc_cv_mcontext_underscores,
1335 #include <sys/cdefs.h>
1336 #include <sys/signal.h>
1337 #include <ucontext.h>
1338 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1340 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1341 if test $gcc_cv_mcontext_underscores = yes; then
1342 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1343 [mcontext_t fields start with __])
1352 # Check if a valid thread package
1353 case ${enable_threads} in
1356 target_thread_file='single'
1360 target_thread_file='single'
1362 aix | dce | gnat | irix | posix | posix95 | rtems | \
1363 single | solaris | vxworks | win32 | mipssde)
1364 target_thread_file=${enable_threads}
1367 echo "${enable_threads} is an unknown thread package" 1>&2
1372 if test x${thread_file} = x; then
1373 # No thread file set by target-specific clauses in config.gcc,
1374 # so use file chosen by default logic above
1375 thread_file=${target_thread_file}
1378 # Make gthr-default.h if we have a thread file.
1380 if test $thread_file != single; then
1381 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1382 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1383 rm -f gthr-default.h-t
1385 mv -f gthr-default.h-t gthr-default.h
1387 gthread_flags=-DHAVE_GTHR_DEFAULT
1389 AC_SUBST(gthread_flags)
1396 if test x$enable___cxa_atexit = xyes || \
1397 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1398 if test x$host = x$target; then
1400 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1401 # keyed to flag_use_cxa_atexit
1406 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1407 [echo "__cxa_atexit can't be enabled on this target"])
1411 # We can't check for __cxa_atexit when building a cross, so assume
1415 if test x$use_cxa_atexit = xyes; then
1416 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1417 [Define if you want to use __cxa_atexit, rather than atexit, to
1418 register C++ destructors for local statics and global objects.
1419 This is essential for fully standards-compliant handling of
1420 destructors, but requires __cxa_atexit in libc.])
1425 if test x$with_system_libunwind = xyes; then
1426 if test x$host = x$target; then
1427 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1430 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1431 if test x$use_getipinfo = xyes; then
1432 AC_DEFINE(HAVE_GETIPINFO, 1,
1433 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1435 echo "The system unwind library does not support _Unwind_GetIPInfo."
1438 # Look for a file containing extra machine modes.
1439 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1440 extra_modes_file='$(srcdir)'/config/${extra_modes}
1441 AC_SUBST(extra_modes_file)
1442 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1443 [Define to the name of a file containing a list of extra machine modes
1444 for this architecture.])
1447 # Convert extra_options into a form suitable for Makefile use.
1449 for f in $extra_options; do
1450 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1452 AC_SUBST(extra_opt_files)
1454 # auto-host.h is the file containing items generated by autoconf and is
1455 # the first file included by config.h.
1456 # If host=build, it is correct to have bconfig include auto-host.h
1457 # as well. If host!=build, we are in error and need to do more
1458 # work to find out the build config parameters.
1459 if test x$host = x$build
1461 build_auto=auto-host.h
1463 # We create a subdir, then run autoconf in the subdir.
1464 # To prevent recursion we set host and build for the new
1465 # invocation of configure to the build for this invocation
1472 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1473 *) realsrcdir=../${srcdir};;
1475 saved_CFLAGS="${CFLAGS}"
1476 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1477 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1478 ${realsrcdir}/configure \
1479 --enable-languages=${enable_languages-all} \
1480 --target=$target_alias --host=$build_alias --build=$build_alias
1481 CFLAGS="${saved_CFLAGS}"
1483 # We just finished tests for the build machine, so rename
1484 # the file auto-build.h in the gcc directory.
1485 mv auto-host.h ../auto-build.h
1488 build_auto=auto-build.h
1490 AC_SUBST(build_subdir)
1492 tm_file="${tm_file} defaults.h"
1493 tm_p_file="${tm_p_file} tm-preds.h"
1494 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1495 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1496 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1497 # put this back in temporarily.
1498 xm_file="auto-host.h ansidecl.h ${xm_file}"
1505 # Compile in configure arguments.
1506 if test -f configargs.h ; then
1507 # Being re-configured.
1508 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1509 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1511 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1514 # Double all backslashes and backslash all quotes to turn
1515 # gcc_config_arguments into a C string.
1516 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1517 $gcc_config_arguments
1519 gcc_config_arguments_str=`cat conftest.out`
1522 cat > configargs.h <<EOF
1523 /* Generated automatically. */
1524 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1525 static const char thread_model[] = "$thread_file";
1527 static const struct {
1528 const char *name, *value;
1529 } configure_default_options[] = $configure_default_options;
1533 # Internationalization
1534 ZW_GNU_GETTEXT_SISTER_DIR
1536 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1537 # -liconv on the link line twice.
1538 case "$LIBINTL" in *$LIBICONV*)
1542 AC_ARG_ENABLE(secureplt,
1543 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1547 [ --enable-cld enable -mcld by default for 32bit x86], [],
1550 # Windows32 Registry support for specifying GCC installation paths.
1551 AC_ARG_ENABLE(win32-registry,
1552 [ --disable-win32-registry
1553 disable lookup of installation paths in the
1554 Registry on Windows hosts
1555 --enable-win32-registry enable registry lookup (default)
1556 --enable-win32-registry=KEY
1557 use KEY instead of GCC version as the last portion
1558 of the registry key],,)
1561 win32 | pe | cygwin* | mingw32* | uwin*)
1562 if test "x$enable_win32_registry" != xno; then
1563 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1566 if test "x$enable_win32_registry" != xno; then
1567 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1568 [Define to 1 if installation paths should be looked up in the Windows
1569 Registry. Ignored on non-Windows hosts.])
1571 if test "x$enable_win32_registry" != xyes \
1572 && test "x$enable_win32_registry" != x; then
1573 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1574 [Define to be the last component of the Windows registry key under which
1575 to look for installation paths. The full key used will be
1576 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1577 The default is the GCC version number.])
1583 # Get an absolute path to the GCC top-level source directory
1584 holddir=`${PWDCMD-pwd}`
1586 topdir=`${PWDCMD-pwd}`
1589 # Conditionalize the makefile for this host machine.
1591 for f in ${host_xmake_file}
1593 if test -f ${srcdir}/config/$f
1595 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1599 # Conditionalize the makefile for this target machine.
1601 for f in ${tmake_file}
1603 if test -f ${srcdir}/config/$f
1605 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1608 tmake_file="${tmake_file_}"
1610 out_object_file=`basename $out_file .c`.o
1612 tm_file_list="options.h"
1613 tm_include_list="options.h"
1614 for f in $tm_file; do
1617 f=`echo $f | sed 's/^..//'`
1618 tm_file_list="${tm_file_list} $f"
1619 tm_include_list="${tm_include_list} $f"
1622 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1623 tm_include_list="${tm_include_list} $f"
1626 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1627 tm_include_list="${tm_include_list} config/$f"
1634 for f in $tm_p_file; do
1637 tm_p_file_list="${tm_p_file_list} $f"
1638 tm_p_include_list="${tm_p_include_list} $f"
1641 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1642 tm_p_include_list="${tm_p_include_list} config/$f"
1648 for f in $xm_file; do
1651 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1652 xm_include_list="${xm_include_list} $f"
1655 xm_file_list="${xm_file_list} $f"
1656 xm_include_list="${xm_include_list} $f"
1659 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1660 xm_include_list="${xm_include_list} config/$f"
1666 host_xm_include_list=
1667 for f in $host_xm_file; do
1670 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1671 host_xm_include_list="${host_xm_include_list} $f"
1674 host_xm_file_list="${host_xm_file_list} $f"
1675 host_xm_include_list="${host_xm_include_list} $f"
1678 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1679 host_xm_include_list="${host_xm_include_list} config/$f"
1685 for f in $build_xm_file; do
1688 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1689 build_xm_include_list="${build_xm_include_list} $f"
1691 auto-build.h | auto-host.h )
1692 build_xm_file_list="${build_xm_file_list} $f"
1693 build_xm_include_list="${build_xm_include_list} $f"
1696 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1697 build_xm_include_list="${build_xm_include_list} config/$f"
1702 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1703 # cross-compiler which does not use the native headers and libraries.
1704 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1705 CROSS= AC_SUBST(CROSS)
1706 ALL=all.internal AC_SUBST(ALL)
1707 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1709 if test "x$with_build_sysroot" != x; then
1710 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1712 # This value is used, even on a native system, because
1713 # CROSS_SYSTEM_HEADER_DIR is just
1714 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1715 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1718 if test x$host != x$target
1720 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1722 SYSTEM_HEADER_DIR=$build_system_header_dir
1723 case "$host","$target" in
1724 # Darwin crosses can use the host system's libraries and headers,
1725 # because of the fat library support. Of course, it must be the
1726 # same version of Darwin on both sides. Allow the user to
1727 # just say --target=foo-darwin without a version number to mean
1728 # "the version on this system".
1729 *-*-darwin*,*-*-darwin*)
1730 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1731 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1732 if test $hostos = $targetos -o $targetos = darwin ; then
1734 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1739 i?86-*-*,x86_64-*-* \
1740 | powerpc*-*-*,powerpc64*-*-*)
1741 CROSS="$CROSS -DNATIVE_CROSS" ;;
1743 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1744 SYSTEM_HEADER_DIR=$build_system_header_dir
1747 # If this is a cross-compiler that does not
1748 # have its own set of headers then define
1751 # If this is using newlib, without having the headers available now,
1752 # then define inhibit_libc in LIBGCC2_CFLAGS.
1753 # This prevents libgcc2 from containing any code which requires libc
1755 : ${inhibit_libc=false}
1756 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1757 test x$with_newlib = xyes ; } &&
1758 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1761 AC_SUBST(inhibit_libc)
1763 # When building gcc with a cross-compiler, we need to adjust things so
1764 # that the generator programs are still built with the native compiler.
1765 # Also, we cannot run fixincludes or fix-header.
1767 # These are the normal (build=host) settings:
1768 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1769 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1770 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1771 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1773 # Possibly disable fixproto, on a per-target basis.
1774 case ${use_fixproto} in
1779 STMP_FIXPROTO=stmp-fixproto
1782 AC_SUBST(STMP_FIXPROTO)
1784 # And these apply if build != host, or we are generating coverage data
1785 if test x$build != x$host || test "x$coverage_flags" != x
1787 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1788 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1790 if test "x$TARGET_SYSTEM_ROOT" = x; then
1791 if test "x$STMP_FIXPROTO" != x; then
1792 STMP_FIXPROTO=stmp-install-fixproto
1797 # Expand extra_headers to include complete path.
1798 # This substitutes for lots of t-* files.
1800 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1801 for file in ${extra_headers} ; do
1802 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1805 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1806 if test x"$use_gcc_tgmath" = xyes
1807 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1810 # Define collect2 in Makefile.
1811 case $host_can_use_collect2 in
1813 *) collect2='collect2$(exeext)' ;;
1815 AC_SUBST([collect2])
1817 # Add a definition of USE_COLLECT2 if system wants one.
1818 case $use_collect2 in
1819 no) use_collect2= ;;
1822 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1823 xm_defines="${xm_defines} USE_COLLECT2"
1824 case $host_can_use_collect2 in
1826 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1832 # ---------------------------
1833 # Assembler & linker features
1834 # ---------------------------
1836 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1837 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1838 # However when ld-new is first executed from the build tree, libtool will
1839 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1840 # to the build tree. While doing this we need to use the previous-stage
1841 # linker, or we have an infinite loop. The presence of a shell script as
1842 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1843 # the gcc/collect-ld script. So we need to know how libtool works, or
1844 # exec-tool will fail.
1846 m4_defun([_LT_CONFIG_COMMANDS], [])
1849 AC_SUBST(enable_fast_install)
1851 # Identify the assembler which will work hand-in-glove with the newly
1852 # built GCC, so that we can examine its features. This is the assembler
1853 # which will be driven by the driver program.
1855 # If build != host, and we aren't building gas in-tree, we identify a
1856 # build->target assembler and hope that it will have the same features
1857 # as the host->target assembler we'll be using.
1858 gcc_cv_gas_major_version=
1859 gcc_cv_gas_minor_version=
1860 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1862 m4_pattern_allow([AS_FOR_TARGET])dnl
1863 AS_VAR_SET_IF(gcc_cv_as,, [
1864 if test -x "$DEFAULT_ASSEMBLER"; then
1865 gcc_cv_as="$DEFAULT_ASSEMBLER"
1866 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1867 && test -f ../gas/Makefile \
1868 && test x$build = x$host; then
1869 gcc_cv_as=../gas/as-new$build_exeext
1870 elif test -x as$build_exeext; then
1871 # Build using assembler in the current directory.
1872 gcc_cv_as=./as$build_exeext
1873 elif test -x $AS_FOR_TARGET; then
1874 gcc_cv_as="$AS_FOR_TARGET"
1876 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1879 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1880 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1881 case "$ORIGINAL_AS_FOR_TARGET" in
1882 ./as | ./as$build_exeext) ;;
1883 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1886 AC_MSG_CHECKING(what assembler to use)
1887 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1888 # Single tree build which includes gas. We want to prefer it
1889 # over whatever linker top-level may have detected, since
1890 # we'll use what we're building after installation anyway.
1891 AC_MSG_RESULT(newly built gas)
1893 _gcc_COMPUTE_GAS_VERSION
1894 in_tree_gas_is_elf=no
1895 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1896 || (grep 'obj_format = multi' ../gas/Makefile \
1897 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1899 in_tree_gas_is_elf=yes
1902 AC_MSG_RESULT($gcc_cv_as)
1906 # Identify the linker which will work hand-in-glove with the newly
1907 # built GCC, so that we can examine its features. This is the linker
1908 # which will be driven by the driver program.
1910 # If build != host, and we aren't building gas in-tree, we identify a
1911 # build->target linker and hope that it will have the same features
1912 # as the host->target linker we'll be using.
1913 gcc_cv_gld_major_version=
1914 gcc_cv_gld_minor_version=
1915 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1916 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1918 AS_VAR_SET_IF(gcc_cv_ld,, [
1919 if test -x "$DEFAULT_LINKER"; then
1920 gcc_cv_ld="$DEFAULT_LINKER"
1921 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1922 && test -f ../ld/Makefile \
1923 && test x$build = x$host; then
1924 gcc_cv_ld=../ld/ld-new$build_exeext
1925 elif test -x collect-ld$build_exeext; then
1926 # Build using linker in the current directory.
1927 gcc_cv_ld=./collect-ld$build_exeext
1928 elif test -x $LD_FOR_TARGET; then
1929 gcc_cv_ld="$LD_FOR_TARGET"
1931 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1934 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1935 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1936 case "$ORIGINAL_LD_FOR_TARGET" in
1937 ./collect-ld | ./collect-ld$build_exeext) ;;
1938 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1941 AC_MSG_CHECKING(what linker to use)
1942 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1943 # Single tree build which includes ld. We want to prefer it
1944 # over whatever linker top-level may have detected, since
1945 # we'll use what we're building after installation anyway.
1946 AC_MSG_RESULT(newly built ld)
1948 in_tree_ld_is_elf=no
1949 if (grep 'EMUL = .*elf' ../ld/Makefile \
1950 || grep 'EMUL = .*linux' ../ld/Makefile \
1951 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1952 in_tree_ld_is_elf=yes
1954 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
1957 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1958 if test x$gcc_cv_gld_version != x; then
1962 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1963 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1966 AC_MSG_RESULT($gcc_cv_ld)
1970 # Figure out what nm we will be using.
1971 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1972 AS_VAR_SET_IF(gcc_cv_nm,, [
1973 if test -f $gcc_cv_binutils_srcdir/configure.in \
1974 && test -f ../binutils/Makefile \
1975 && test x$build = x$host; then
1976 gcc_cv_nm=../binutils/nm-new$build_exeext
1977 elif test -x nm$build_exeext; then
1978 gcc_cv_nm=./nm$build_exeext
1979 elif test -x $NM_FOR_TARGET; then
1980 gcc_cv_nm="$NM_FOR_TARGET"
1982 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1985 AC_MSG_CHECKING(what nm to use)
1986 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1987 # Single tree build which includes binutils.
1988 AC_MSG_RESULT(newly built nm)
1991 AC_MSG_RESULT($gcc_cv_nm)
1995 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1996 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1997 case "$ORIGINAL_NM_FOR_TARGET" in
1998 ./nm | ./nm$build_exeext) ;;
1999 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2003 # Figure out what objdump we will be using.
2004 AS_VAR_SET_IF(gcc_cv_objdump,, [
2005 if test -f $gcc_cv_binutils_srcdir/configure.in \
2006 && test -f ../binutils/Makefile \
2007 && test x$build = x$host; then
2008 # Single tree build which includes binutils.
2009 gcc_cv_objdump=../binutils/objdump$build_exeext
2010 elif test -x objdump$build_exeext; then
2011 gcc_cv_objdump=./objdump$build_exeext
2012 elif test -x $OBJDUMP_FOR_TARGET; then
2013 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2015 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2018 AC_MSG_CHECKING(what objdump to use)
2019 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2020 # Single tree build which includes binutils.
2021 AC_MSG_RESULT(newly built objdump)
2022 elif test x$gcc_cv_objdump = x; then
2023 AC_MSG_RESULT(not found)
2025 AC_MSG_RESULT($gcc_cv_objdump)
2028 # Figure out what assembler alignment features are present.
2029 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2033 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2034 [Define if your assembler supports .balign and .p2align.])])
2036 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2039 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2040 [Define if your assembler supports specifying the maximum number
2041 of bytes to skip when using the GAS .p2align command.])])
2043 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2046 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2047 [Define if your assembler supports .literal16.])])
2049 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2051 [conftest_label1: .word 0
2053 conftest_label2: .word 0
2055 [if test x$gcc_cv_nm != x; then
2056 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2057 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2058 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2060 else gcc_cv_as_subsection_m1=yes
2062 rm -f conftest.nm1 conftest.nm2
2064 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2065 [Define if your assembler supports .subsection and .subsection -1 starts
2066 emitting at the beginning of your section.])])
2068 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2071 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2073 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2075 [ .weakref foobar, barfnot],,
2076 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2078 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2081 .NSUBSPA $CODE$,COMDAT],,
2082 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2084 # .hidden needs to be supported in both the assembler and the linker,
2085 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2086 # This is irritatingly difficult to feature test for; we have to check the
2087 # date string after the version number. If we've got an in-tree
2088 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2090 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2091 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2096 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2097 [if test $in_tree_ld = yes ; then
2099 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2100 && test $in_tree_ld_is_elf = yes; then
2101 gcc_cv_ld_hidden=yes
2104 gcc_cv_ld_hidden=yes
2105 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2106 if echo "$ld_ver" | grep GNU > /dev/null; then
2108 ld_vers=`echo $ld_ver | sed -n \
2109 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2110 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2111 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2112 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2113 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2114 if test 0"$ld_date" -lt 20020404; then
2115 if test -n "$ld_date"; then
2116 # If there was date string, but was earlier than 2002-04-04, fail
2118 elif test -z "$ld_vers"; then
2119 # If there was no date string nor ld version number, something is wrong
2122 test -z "$ld_vers_patch" && ld_vers_patch=0
2123 if test "$ld_vers_major" -lt 2; then
2125 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2126 gcc_cv_ld_hidden="no"
2127 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2135 hppa64*-*-hpux* | ia64*-*-hpux*)
2136 gcc_cv_ld_hidden=yes
2144 libgcc_visibility=no
2145 AC_SUBST(libgcc_visibility)
2146 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2147 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2148 libgcc_visibility=yes
2149 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2150 [Define if your assembler and linker support .hidden.])
2153 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2154 gcc_cv_ld_ro_rw_mix=unknown
2155 if test $in_tree_ld = yes ; then
2156 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2157 && test $in_tree_ld_is_elf = yes; then
2158 gcc_cv_ld_ro_rw_mix=read-write
2160 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2161 echo '.section myfoosect, "a"' > conftest1.s
2162 echo '.section myfoosect, "aw"' > conftest2.s
2163 echo '.byte 1' >> conftest2.s
2164 echo '.section myfoosect, "a"' > conftest3.s
2165 echo '.byte 0' >> conftest3.s
2166 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2167 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2168 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2169 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2170 conftest2.o conftest3.o > /dev/null 2>&1; then
2171 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2172 | sed -e '/myfoosect/!d' -e N`
2173 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2174 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2175 gcc_cv_ld_ro_rw_mix=read-only
2177 gcc_cv_ld_ro_rw_mix=read-write
2182 rm -f conftest.* conftest[123].*
2185 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2186 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2187 [Define if your linker links a mix of read-only
2188 and read-write sections into a read-write section.])
2190 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2192 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2193 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2201 [# GAS versions before 2.11 do not support uleb128,
2202 # despite appearing to.
2203 # ??? There exists an elf-specific test that will crash
2204 # the assembler. Perhaps it's better to figure out whether
2205 # arbitrary sections are supported and try the test.
2206 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2207 if echo "$as_ver" | grep GNU > /dev/null; then
2209 as_vers=`echo $as_ver | sed -n \
2210 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2211 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2212 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2214 if test $as_major -eq 2 && test $as_minor -lt 11
2216 else gcc_cv_as_leb128=yes
2219 [AC_DEFINE(HAVE_AS_LEB128, 1,
2220 [Define if your assembler supports .sleb128 and .uleb128.])])
2222 # Check if we have assembler support for unwind directives.
2223 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2230 .cfi_escape 1, 2, 3, 4, 5
2234 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2235 # read-only and read-write sections, we need to make sure that the
2236 # assembler used emits read-write .eh_frame sections.
2237 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2238 if test "x$gcc_cv_objdump" != x; then
2239 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2240 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2241 gcc_cv_as_cfi_directive=no
2243 gcc_cv_as_cfi_directive=yes
2246 # no objdump, err on the side of caution
2247 gcc_cv_as_cfi_directive=no
2250 gcc_cv_as_cfi_directive=yes
2254 gcc_cv_as_cfi_directive=yes
2257 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2258 [`if test $gcc_cv_as_cfi_directive = yes; then echo 1; else echo 0; fi`],
2259 [Define 0/1 if your assembler supports CFI directives.])
2261 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2262 gcc_cv_as_cfi_personality_directive, ,,
2265 .cfi_personality 0, symbol
2267 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2268 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2269 then echo 1; else echo 0; fi`],
2270 [Define 0/1 if your assembler supports .cfi_personality.])
2272 # GAS versions up to and including 2.11.0 may mis-optimize
2274 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2282 .section .eh_frame,"aw",@progbits
2284 .4byte .LECIE1-.LSCIE1
2298 .4byte .LEFDE1-.LASFDE1
2300 .4byte .LASFDE1-__FRAME_BEGIN__
2308 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2309 cat > conftest.lit <<EOF
2310 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2311 0010 01000000 12000000 18000000 00000000 ................
2312 0020 08000000 04080000 0044 .........D @&t@
2314 cat > conftest.big <<EOF
2315 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2316 0010 00000001 00000012 00000018 00000000 ................
2317 0020 00000008 04000000 0844 .........D @&t@
2319 # If the assembler didn't choke, and we can objdump,
2320 # and we got the correct data, then succeed.
2321 # The text in the here-document typically retains its unix-style line
2322 # endings, while the output of objdump will use host line endings.
2323 # Therefore, use diff -b for the comparisons.
2324 if test x$gcc_cv_objdump != x \
2325 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2326 | tail -3 > conftest.got \
2327 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2328 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2330 gcc_cv_as_eh_frame=yes
2331 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2332 gcc_cv_as_eh_frame=buggy
2334 # Uh oh, what do we do now?
2335 gcc_cv_as_eh_frame=no
2338 if test $gcc_cv_as_eh_frame = buggy; then
2339 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2340 [Define if your assembler mis-optimizes .eh_frame data.])
2343 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2344 [elf,2,12,0], [--fatal-warnings],
2345 [.section .rodata.str, "aMS", @progbits, 1])
2346 if test $gcc_cv_as_shf_merge = no; then
2347 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2348 [elf,2,12,0], [--fatal-warnings],
2349 [.section .rodata.str, "aMS", %progbits, 1])
2351 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2352 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2353 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2355 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2356 [elf,2,16,0], [--fatal-warnings],
2357 [.section .text,"axG",@progbits,.foo,comdat])
2358 if test $gcc_cv_as_comdat_group = yes; then
2359 gcc_cv_as_comdat_group_percent=no
2361 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2362 [elf,2,16,0], [--fatal-warnings],
2363 [.section .text,"axG",%progbits,.foo,comdat])
2365 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2367 if test 0"$ld_date" -lt 20050308; then
2368 if test -n "$ld_date"; then
2369 # If there was date string, but was earlier than 2005-03-08, fail
2371 elif test "$ld_vers_major" -lt 2; then
2373 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2378 # assume linkers other than GNU ld don't support COMDAT group
2381 if test $comdat_group = no; then
2382 gcc_cv_as_comdat_group=no
2383 gcc_cv_as_comdat_group_percent=no
2385 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2386 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2387 [Define 0/1 if your assembler and linker support COMDAT groups.])
2389 # Thread-local storage - the check is heavily parameterized.
2398 .section ".tdata","awT",@progbits
2401 ldq $27,__tls_get_addr($29) !literal!1
2402 lda $16,foo($29) !tlsgd!1
2403 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2404 ldq $27,__tls_get_addr($29) !literal!2
2405 lda $16,foo($29) !tlsldm!2
2406 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2407 ldq $1,foo($29) !gotdtprel
2408 ldah $2,foo($29) !dtprelhi
2409 lda $3,foo($2) !dtprello
2410 lda $4,foo($29) !dtprel
2411 ldq $1,foo($29) !gottprel
2412 ldah $2,foo($29) !tprelhi
2413 lda $3,foo($2) !tprello
2414 lda $4,foo($29) !tprel'
2417 tls_as_opt=--fatal-warnings
2421 .section ".tdata","awT",@progbits
2433 .section ".tdata","awT",@progbits
2437 addil LT%foo-$tls_gdidx$,gp
2438 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2441 addil LT%foo-$tls_ldidx$,gp
2443 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2444 addil LR%foo-$tls_dtpoff$,%ret0
2445 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2447 addil LT%foo-$tls_ieoff$,gp
2448 ldw RT%foo-$tls_ieoff$(%r1),%t2
2451 addil LR%foo-$tls_leoff$,%t1
2452 ldo RR%foo-$tls_leoff$(%r1),%t2'
2455 tls_as_opt=--fatal-warnings
2459 .section ".tdata","awT",%progbits
2472 .section ".tdata","awT",@progbits
2476 leal foo@TLSGD(,%ebx,1), %eax
2477 leal foo@TLSLDM(%ebx), %eax
2478 leal foo@DTPOFF(%eax), %edx
2479 movl foo@GOTTPOFF(%ebx), %eax
2480 subl foo@GOTTPOFF(%ebx), %eax
2481 addl foo@GOTNTPOFF(%ebx), %eax
2482 movl foo@INDNTPOFF, %eax
2483 movl $foo@TPOFF, %eax
2484 subl $foo@TPOFF, %eax
2485 leal foo@NTPOFF(%ecx), %eax'
2488 tls_as_opt=--fatal-warnings
2492 .section ".tdata","awT",@progbits
2496 leaq foo@TLSGD(%rip), %rdi
2497 leaq foo@TLSLD(%rip), %rdi
2498 leaq foo@DTPOFF(%rax), %rdx
2499 movq foo@GOTTPOFF(%rip), %rax
2500 movq $foo@TPOFF, %rax'
2503 tls_as_opt=--fatal-warnings
2507 .section ".tdata","awT",@progbits
2510 addl r16 = @ltoff(@dtpmod(foo#)), gp
2511 addl r17 = @ltoff(@dtprel(foo#)), gp
2512 addl r18 = @ltoff(@tprel(foo#)), gp
2513 addl r19 = @dtprel(foo#), gp
2514 adds r21 = @dtprel(foo#), r13
2515 movl r23 = @dtprel(foo#)
2516 addl r20 = @tprel(foo#), gp
2517 adds r22 = @tprel(foo#), r13
2518 movl r24 = @tprel(foo#)'
2521 tls_as_opt=--fatal-warnings
2525 .section .tdata,"awT",@progbits
2529 addiu $4, $28, %tlsgd(x)
2530 addiu $4, $28, %tlsldm(x)
2531 lui $4, %dtprel_hi(x)
2532 addiu $4, $4, %dtprel_lo(x)
2533 lw $4, %gottprel(x)($28)
2534 lui $4, %tprel_hi(x)
2535 addiu $4, $4, %tprel_lo(x)'
2538 tls_as_opt='-32 --fatal-warnings'
2542 .section ".tdata","awT",@progbits
2550 addi 3,31,ld0@got@tlsgd
2552 addi 3,31,x1@got@tlsld
2555 addis 9,3,x2@dtprel@ha
2556 addi 9,9,x2@dtprel@l
2557 lwz 9,x3@got@tprel(31)
2560 addis 9,2,x2@tprel@ha
2561 addi 9,9,x2@tprel@l'
2564 tls_as_opt="-a32 --fatal-warnings"
2568 .section ".tdata","awT",@progbits
2576 addi 3,2,ld0@got@tlsgd
2582 addi 3,2,x1@got@tlsld
2588 addis 9,3,x2@dtprel@ha
2589 addi 9,9,x2@dtprel@l
2592 ld 9,x3@got@dtprel(2)
2598 tls_as_opt="-a64 --fatal-warnings"
2602 .section ".tdata","awT",@progbits
2611 l %r1,foo@GOTNTPOFF(%r12)
2612 l %r1,0(%r1):tls_load:foo
2613 bas %r14,0(%r1,%r13):tls_gdcall:foo
2614 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2617 tls_as_opt="-m31 --fatal-warnings"
2621 .section ".tdata","awT",@progbits
2629 lg %r1,foo@GOTNTPOFF(%r12)
2630 larl %r1,foo@INDNTPOFF
2631 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2632 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2635 tls_as_opt="-m64 -Aesame --fatal-warnings"
2637 sh-*-* | sh[34]-*-*)
2639 .section ".tdata","awT",@progbits
2649 tls_as_opt=--fatal-warnings
2653 sparc*-sun-solaris2.[56789]*)
2654 # TLS was introduced in the Solaris 9 4/04 release but
2655 # we do not enable it by default on Solaris 9 either.
2656 if test "x$enable_tls" = xyes ; then
2662 sparc*-sun-solaris2.*)
2669 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2671 .section ".tdata",#alloc,#write,#tls
2674 sethi %tgd_hi22(foo), %o0
2675 add %o0, %tgd_lo10(foo), %o1
2676 add %l7, %o1, %o0, %tgd_add(foo)
2677 call __tls_get_addr, %tgd_call(foo)
2678 sethi %tldm_hi22(foo), %l1
2679 add %l1, %tldm_lo10(foo), %l2
2680 add %l7, %l2, %o0, %tldm_add(foo)
2681 call __tls_get_addr, %tldm_call(foo)
2682 sethi %tldo_hix22(foo), %l3
2683 xor %l3, %tldo_lox10(foo), %l4
2684 add %o0, %l4, %l5, %tldo_add(foo)
2685 sethi %tie_hi22(foo), %o3
2686 add %o3, %tie_lo10(foo), %o3
2687 ld [%l7 + %o3], %o2, %tie_ld(foo)
2688 add %g7, %o2, %o4, %tie_add(foo)
2689 sethi %tle_hix22(foo), %l1
2690 xor %l1, %tle_lox10(foo), %o5
2691 ld [%g7 + %o5], %o1'
2696 .section ".tdata","awT",@progbits
2699 sethi %tgd_hi22(foo), %o0
2700 add %o0, %tgd_lo10(foo), %o1
2701 add %l7, %o1, %o0, %tgd_add(foo)
2702 call __tls_get_addr, %tgd_call(foo)
2703 sethi %tldm_hi22(foo), %l1
2704 add %l1, %tldm_lo10(foo), %l2
2705 add %l7, %l2, %o0, %tldm_add(foo)
2706 call __tls_get_addr, %tldm_call(foo)
2707 sethi %tldo_hix22(foo), %l3
2708 xor %l3, %tldo_lox10(foo), %l4
2709 add %o0, %l4, %l5, %tldo_add(foo)
2710 sethi %tie_hi22(foo), %o3
2711 add %o3, %tie_lo10(foo), %o3
2712 ld [%l7 + %o3], %o2, %tie_ld(foo)
2713 add %g7, %o2, %o4, %tie_add(foo)
2714 sethi %tle_hix22(foo), %l1
2715 xor %l1, %tle_lox10(foo), %o5
2716 ld [%g7 + %o5], %o1'
2719 tls_as_opt="-32 --fatal-warnings"
2724 .section ".tdata","awT",@progbits
2727 movi a8, foo@TLSFUNC
2728 movi a10, foo@TLSARG
2729 callx8.tls a8, foo@TLSCALL'
2736 if test "x$enable_tls" = xno ; then
2737 : # TLS explicitly disabled.
2738 elif test "x$enable_tls" = xyes ; then
2739 set_have_as_tls=yes # TLS explicitly enabled.
2740 elif test -z "$tls_first_major"; then
2741 : # If we don't have a check, assume no support.
2743 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2744 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2745 [set_have_as_tls=yes])
2747 if test $set_have_as_tls = yes ; then
2748 AC_DEFINE(HAVE_AS_TLS, 1,
2749 [Define if your assembler supports thread-local storage.])
2752 # Target-specific assembler checks.
2754 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2755 gcc_cv_ld_static_dynamic=no
2756 if test $in_tree_ld = yes ; then
2757 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2758 gcc_cv_ld_static_dynamic=yes
2760 elif test x$gcc_cv_ld != x; then
2761 # Check if linker supports -Bstatic/-Bdynamic option
2762 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2763 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2764 gcc_cv_ld_static_dynamic=yes
2767 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2768 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2769 [Define if your linker supports -Bstatic/-Bdynamic option.])
2771 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2773 if test x"$demangler_in_ld" = xyes; then
2774 AC_MSG_CHECKING(linker --demangle support)
2775 gcc_cv_ld_demangle=no
2776 if test $in_tree_ld = yes; then
2777 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2778 gcc_cv_ld_demangle=yes
2780 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2781 # Check if the GNU linker supports --demangle option
2782 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2783 gcc_cv_ld_demangle=yes
2786 if test x"$gcc_cv_ld_demangle" = xyes; then
2787 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2788 [Define if your linker supports --demangle option.])
2790 AC_MSG_RESULT($gcc_cv_ld_demangle)
2794 # All TARGET_ABI_OSF targets.
2795 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2796 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2797 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2800 extbl $3, $2, $3 !lituse_bytoff!1
2801 ldq $2, a($29) !literal!1
2802 ldq $4, b($29) !literal!2
2803 ldq_u $3, 0($2) !lituse_base!1
2804 ldq $27, f($29) !literal!5
2805 jsr $26, ($27), f !lituse_jsr!5
2806 ldah $29, 0($26) !gpdisp!3
2807 lda $0, c($29) !gprel
2808 ldah $1, d($29) !gprelhigh
2809 lda $1, d($1) !gprellow
2810 lda $29, 0($29) !gpdisp!3],,
2811 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2812 [Define if your assembler supports explicit relocations.])])
2813 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2814 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2817 ldq $27, a($29) !literal!1
2818 jsr $26, ($27), a !lituse_jsrdirect!1],,
2819 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2820 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2824 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2825 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2826 [-no-mul-bug-abort], [.text],,
2827 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2828 [Define if your assembler supports the -no-mul-bug-abort option.])])
2832 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2833 [.register %g2, #scratch],,
2834 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2835 [Define if your assembler supports .register.])])
2837 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2839 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2840 [Define if your assembler supports -relax option.])])
2842 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2843 gcc_cv_as_sparc_ua_pcrel,,
2851 .uaword %r_disp32(foo)],
2852 [if test x$gcc_cv_ld != x \
2853 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2854 gcc_cv_as_sparc_ua_pcrel=yes
2857 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2858 [Define if your assembler and linker support unaligned PC relative relocs.])
2860 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2861 gcc_cv_as_sparc_ua_pcrel_hidden,,
2866 .uaword %r_disp32(foo)
2867 .byte 0x32, 0x33, 0x34
2872 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2873 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2874 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2875 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2876 if $gcc_cv_objdump -R conftest 2> /dev/null \
2877 | grep 'DISP32' > /dev/null 2>&1; then
2880 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2884 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2885 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2886 ]) # unaligned pcrel relocs
2888 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2889 gcc_cv_as_sparc_offsetable_lo10,,
2892 or %g1, %lo(ab) + 12, %g1
2893 or %g1, %lo(ab + 12), %g1],
2894 [if test x$gcc_cv_objdump != x \
2895 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2896 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2897 gcc_cv_as_sparc_offsetable_lo10=yes
2899 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2900 [Define if your assembler supports offsetable %lo().])])
2904 i[34567]86-*-* | x86_64-*-*)
2907 cygwin* | pe | mingw32*)
2908 # Used for DWARF 2 in PE
2909 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2910 gcc_cv_as_ix86_pe_secrel32,
2916 [if test x$gcc_cv_ld != x \
2917 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2918 gcc_cv_as_ix86_pe_secrel32=yes
2921 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2922 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2926 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2927 gcc_cv_as_ix86_filds_fists,
2928 [2,9,0],, [filds mem; fists mem],,
2929 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2930 [Define if your assembler uses the new HImode fild and fist notation.])])
2932 gcc_GAS_CHECK_FEATURE([cmov syntax],
2933 gcc_cv_as_ix86_cmov_sun_syntax,,,
2934 [cmovl.l %edx, %eax],,
2935 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2936 [Define if your assembler supports the Sun syntax for cmov.])])
2938 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2939 gcc_cv_as_ix86_ffreep,,,
2941 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2942 [Define if your assembler supports the ffreep mnemonic.])])
2944 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2945 gcc_cv_as_ix86_sahf,,,
2947 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2948 [Define if your assembler supports the sahf mnemonic.])])
2950 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2951 gcc_cv_as_ix86_diff_sect_delta,,,
2959 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2960 [Define if your assembler supports the subtraction of symbols in different sections.])])
2962 # This one is used unconditionally by i386.[ch]; it is to be defined
2963 # to 1 if the feature is present, 0 otherwise.
2964 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2965 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2971 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2972 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2973 [Define true if the assembler supports '.long foo@GOTOFF'.])
2977 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2978 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2980 addl r15 = @ltoffx(x#), gp
2982 ld8.mov r16 = [[r15]], x#],,
2983 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2984 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2990 *-*-aix*) conftest_s=' .machine "pwr5"
2994 gcc_GAS_CHECK_FEATURE([.machine directive support],
2995 gcc_cv_as_machine_directive,,,
2996 [ .machine ppc7400])
2997 if test x$gcc_cv_as_machine_directive != xyes; then
2998 echo "*** This target requires an assembler supporting \".machine\"" >&2
2999 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3000 test x$build = x$target && exit 1
3004 *) conftest_s=' .machine power4
3009 gcc_GAS_CHECK_FEATURE([mfcr field support],
3010 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3012 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3013 [Define if your assembler supports mfcr field.])])
3016 *-*-aix*) conftest_s=' .machine "pwr5"
3019 *) conftest_s=' .machine power5
3024 gcc_GAS_CHECK_FEATURE([popcntb support],
3025 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3027 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3028 [Define if your assembler supports popcntb field.])])
3031 *-*-aix*) conftest_s=' .machine "pwr5x"
3034 *) conftest_s=' .machine power5
3039 gcc_GAS_CHECK_FEATURE([fp round support],
3040 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3042 [AC_DEFINE(HAVE_AS_FPRND, 1,
3043 [Define if your assembler supports fprnd.])])
3046 *-*-aix*) conftest_s=' .machine "pwr6"
3049 *) conftest_s=' .machine power6
3054 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3055 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3057 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3058 [Define if your assembler supports mffgpr and mftgpr.])])
3061 *-*-aix*) conftest_s=' .csect .text[[PR]]
3063 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3067 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3068 *) conftest_s=' .text
3070 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3073 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3074 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3076 [AC_DEFINE(HAVE_AS_REL16, 1,
3077 [Define if your assembler supports R_PPC_REL16 relocs.])])
3080 *-*-aix*) conftest_s=' .machine "pwr6"
3083 *) conftest_s=' .machine power6
3088 gcc_GAS_CHECK_FEATURE([compare bytes support],
3089 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3091 [AC_DEFINE(HAVE_AS_CMPB, 1,
3092 [Define if your assembler supports cmpb.])])
3095 *-*-aix*) conftest_s=' .machine "pwr6"
3098 *) conftest_s=' .machine power6
3103 gcc_GAS_CHECK_FEATURE([decimal float support],
3104 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3106 [AC_DEFINE(HAVE_AS_DFP, 1,
3107 [Define if your assembler supports DFP instructions.])])
3110 *-*-aix*) conftest_s=' .machine "pwr7"
3113 *) conftest_s=' .machine power7
3118 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3119 gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3121 [AC_DEFINE(HAVE_AS_VSX, 1,
3122 [Define if your assembler supports VSX instructions.])])
3124 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3125 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3126 [.gnu_attribute 4,1],,
3127 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3128 [Define if your assembler supports .gnu_attribute.])])
3132 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3133 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3134 [ lw $4,%gp_rel(foo)($4)],,
3135 [if test x$target_cpu_default = x
3136 then target_cpu_default=MASK_EXPLICIT_RELOCS
3137 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3139 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3140 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3141 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3142 [Define if the assembler understands -mno-shared.])])
3144 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3145 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3146 [.gnu_attribute 4,1],,
3147 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3148 [Define if your assembler supports .gnu_attribute.])])
3150 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3151 gcc_cv_as_mips_dtprelword, [2,18,0],,
3152 [.section .tdata,"awT",@progbits
3156 .dtprelword x+0x8000],,
3157 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3158 [Define if your assembler supports .dtprelword.])])
3162 # Mips and HP-UX need the GNU assembler.
3163 # Linux on IA64 might be able to use the Intel assembler.
3166 mips*-*-* | *-*-hpux* )
3167 if test x$gas_flag = xyes \
3168 || test x"$host" != x"$build" \
3169 || test ! -x "$gcc_cv_as" \
3170 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3173 echo "*** This configuration requires the GNU assembler" >&2
3179 # ??? Not all targets support dwarf2 debug_line, even within a version
3180 # of gas. Moreover, we need to emit a valid instruction to trigger any
3181 # info to the output file. So, as supported targets are added to gas 2.11,
3182 # add some instruction here to (also) show we expect this might work.
3183 # ??? Once 2.11 is released, probably need to add first known working
3184 # version to the per-target configury.
3186 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3187 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3188 | xstormy16*-*-* | cris-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3189 | spu-*-* | fido*-*-*)
3192 ia64*-*-* | s390*-*-*)
3199 if test x"$insn" != x; then
3201 .file 1 \"conftest.s\"
3204 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3205 gcc_cv_as_dwarf2_debug_line,
3206 [elf,2,11,0],, [$conftest_s],
3207 [if test x$gcc_cv_objdump != x \
3208 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3209 | grep debug_line > /dev/null 2>&1; then
3210 gcc_cv_as_dwarf2_debug_line=yes
3213 # The .debug_line file table must be in the exact order that
3214 # we specified the files, since these indices are also used
3215 # by DW_AT_decl_file. Approximate this test by testing if
3216 # the assembler bitches if the same index is assigned twice.
3217 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3218 gcc_cv_as_dwarf2_file_buggy,,,
3222 if test $gcc_cv_as_dwarf2_debug_line = yes \
3223 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3224 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3225 [Define if your assembler supports dwarf2 .file/.loc directives,
3226 and preserves file table indices exactly as given.])
3229 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3230 gcc_cv_as_gdwarf2_flag,
3231 [elf,2,11,0], [--gdwarf2], [$insn],,
3232 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3233 [Define if your assembler supports the --gdwarf2 option.])])
3235 gcc_GAS_CHECK_FEATURE([--gstabs option],
3236 gcc_cv_as_gstabs_flag,
3237 [elf,2,11,0], [--gstabs], [$insn],
3238 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3239 # and warns about it, but still exits successfully. So check for
3241 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3243 else gcc_cv_as_gstabs_flag=yes
3245 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3246 [Define if your assembler supports the --gstabs option.])])
3248 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3249 gcc_cv_as_debug_prefix_map_flag,
3250 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3251 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3252 [Define if your assembler supports the --debug-prefix-map option.])])
3255 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3258 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3259 [Define if your assembler supports .lcomm with an alignment field.])])
3261 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3262 [gcc_cv_as_line_zero],
3263 [gcc_cv_as_line_zero=no
3264 if test $in_tree_gas = yes; then
3265 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3266 elif test "x$gcc_cv_as" != x; then
3267 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3268 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3269 test "x`cat conftest.out`" = x
3271 gcc_cv_as_line_zero=yes
3273 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3274 cat conftest.s >&AS_MESSAGE_LOG_FD
3275 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3276 cat conftest.out >&AS_MESSAGE_LOG_FD
3278 rm -f conftest.o conftest.s conftest.out
3280 if test "x$gcc_cv_as_line_zero" = xyes; then
3281 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3282 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3285 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3286 gcc_cv_ld_eh_frame_hdr=no
3287 if test $in_tree_ld = yes ; then
3288 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3289 && test $in_tree_ld_is_elf = yes; then
3290 gcc_cv_ld_eh_frame_hdr=yes
3292 elif test x$gcc_cv_ld != x; then
3293 # Check if linker supports --eh-frame-hdr option
3294 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3295 gcc_cv_ld_eh_frame_hdr=yes
3298 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3299 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3300 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3301 [Define if your linker supports --eh-frame-hdr option.])
3303 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3305 AC_MSG_CHECKING(linker position independent executable support)
3307 if test $in_tree_ld = yes ; then
3308 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3309 && test $in_tree_ld_is_elf = yes; then
3312 elif test x$gcc_cv_ld != x; then
3313 # Check if linker supports -pie option
3314 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3318 if test x"$gcc_cv_ld_pie" = xyes; then
3319 AC_DEFINE(HAVE_LD_PIE, 1,
3320 [Define if your linker supports -pie option.])
3322 AC_MSG_RESULT($gcc_cv_ld_pie)
3324 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3325 gcc_cv_ld_eh_gc_sections=no
3326 if test $in_tree_ld = yes ; then
3327 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3328 && test $in_tree_ld_is_elf = yes; then
3329 gcc_cv_ld_eh_gc_sections=yes
3331 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3332 cat > conftest.s <<EOF
3335 .type _start, @function
3338 .size _start, .-_start
3339 .section .text.foo,"ax",@progbits
3340 .type foo, @function
3344 .section .gcc_except_table.foo,"a",@progbits
3347 .section .eh_frame,"a",@progbits
3350 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3351 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3352 | grep "gc-sections option ignored" > /dev/null; then
3353 gcc_cv_ld_eh_gc_sections=no
3354 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3355 gcc_cv_ld_eh_gc_sections=yes
3356 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3357 if test x$gcc_cv_as_comdat_group != xyes; then
3358 gcc_cv_ld_eh_gc_sections=no
3359 cat > conftest.s <<EOF
3362 .type _start, @function
3365 .size _start, .-_start
3366 .section .gnu.linkonce.t.foo,"ax",@progbits
3367 .type foo, @function
3371 .section .gcc_except_table.foo,"a",@progbits
3374 .section .eh_frame,"a",@progbits
3377 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3378 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3379 | grep "gc-sections option ignored" > /dev/null; then
3380 gcc_cv_ld_eh_gc_sections=no
3381 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3382 gcc_cv_ld_eh_gc_sections=yes
3388 rm -f conftest.s conftest.o conftest
3392 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3393 gcc_cv_ld_eh_gc_sections=no
3396 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3397 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3398 [Define if your linker supports garbage collection of
3399 sections in presence of EH frames.])
3401 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3407 AC_CACHE_CHECK(linker --as-needed support,
3408 gcc_cv_ld_as_needed,
3409 [gcc_cv_ld_as_needed=no
3410 if test $in_tree_ld = yes ; then
3411 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3412 && test $in_tree_ld_is_elf = yes; then
3413 gcc_cv_ld_as_needed=yes
3415 elif test x$gcc_cv_ld != x; then
3416 # Check if linker supports --as-needed and --no-as-needed options
3417 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3418 gcc_cv_ld_as_needed=yes
3422 if test x"$gcc_cv_ld_as_needed" = xyes; then
3423 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3424 [Define if your linker supports --as-needed and --no-as-needed options.])
3427 case "$target:$tm_file" in
3428 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3429 AC_CACHE_CHECK(linker support for omitting dot symbols,
3430 gcc_cv_ld_no_dot_syms,
3431 [gcc_cv_ld_no_dot_syms=no
3432 if test $in_tree_ld = yes ; then
3433 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3434 gcc_cv_ld_no_dot_syms=yes
3436 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3437 cat > conftest1.s <<EOF
3441 cat > conftest2.s <<EOF
3442 .section ".opd","aw"
3447 .quad .LEfoo,.TOC.@tocbase,0
3453 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3454 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3455 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3456 gcc_cv_ld_no_dot_syms=yes
3458 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3461 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3462 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3463 [Define if your PowerPC64 linker only needs function descriptor syms.])
3468 AC_CACHE_CHECK(linker --sysroot support,
3470 [gcc_cv_ld_sysroot=no
3471 if test $in_tree_ld = yes ; then
3472 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3473 gcc_cv_ld_sysroot=yes
3475 elif test x$gcc_cv_ld != x; then
3476 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3477 gcc_cv_ld_sysroot=yes
3480 if test x"$gcc_cv_ld_sysroot" = xyes; then
3481 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3482 [Define if your linker supports --sysroot.])
3485 if test x$with_sysroot = x && test x$host = x$target \
3486 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3487 && test "$prefix" != "NONE"; then
3488 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3489 [Define to PREFIX/include if cpp should also search that directory.])
3492 # Test for stack protector support in target C library.
3493 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3494 gcc_cv_libc_provides_ssp,
3495 [gcc_cv_libc_provides_ssp=no
3498 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3499 if test "x$with_sysroot" = x; then
3500 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3501 elif test "x$with_build_sysroot" != "x"; then
3502 glibc_header_dir="${with_build_sysroot}/usr/include"
3503 elif test "x$with_sysroot" = xyes; then
3504 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3506 glibc_header_dir="${with_sysroot}/usr/include"
3509 glibc_header_dir=/usr/include
3511 # glibc 2.4 and later provides __stack_chk_fail and
3512 # either __stack_chk_guard, or TLS access to stack guard canary.
3513 if test -f $glibc_header_dir/features.h \
3514 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3515 $glibc_header_dir/features.h > /dev/null; then
3516 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3517 $glibc_header_dir/features.h > /dev/null; then
3518 gcc_cv_libc_provides_ssp=yes
3519 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3520 $glibc_header_dir/features.h > /dev/null \
3521 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3522 $glibc_header_dir/features.h > /dev/null; then
3523 gcc_cv_libc_provides_ssp=yes
3524 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3525 $glibc_header_dir/features.h > /dev/null && \
3526 test -f $glibc_header_dir/bits/uClibc_config.h && \
3527 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3528 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3529 gcc_cv_libc_provides_ssp=yes
3534 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3535 [echo "no __stack_chk_fail on this target"])
3537 *) gcc_cv_libc_provides_ssp=no ;;
3540 if test x$gcc_cv_libc_provides_ssp = xyes; then
3541 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3542 [Define if your target C library provides stack protector support])
3545 # Check if TFmode long double should be used by default or not.
3546 # Some glibc targets used DFmode long double, but with glibc 2.4
3547 # and later they can use TFmode.
3549 powerpc*-*-linux* | \
3554 AC_ARG_WITH(long-double-128,
3555 [ --with-long-double-128 Use 128-bit long double by default.],
3556 gcc_cv_target_ldbl128="$with_long_double_128",
3557 [gcc_cv_target_ldbl128=no
3558 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3559 if test "x$with_sysroot" = x; then
3560 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3561 elif test "x$with_build_sysroot" != "x"; then
3562 glibc_header_dir="${with_build_sysroot}/usr/include"
3563 elif test "x$with_sysroot" = xyes; then
3564 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3566 glibc_header_dir="${with_sysroot}/usr/include"
3569 glibc_header_dir=/usr/include
3572 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3573 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3574 && gcc_cv_target_ldbl128=yes
3579 if test x$gcc_cv_target_ldbl128 = xyes; then
3580 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3581 [Define if TFmode long double should be the default])
3584 # Find out what GC implementation we want, or may, use.
3586 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3594 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3597 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3602 echo "Using $GGC for garbage collection."
3604 # Use the system's zlib library.
3606 zlibinc="-I\$(srcdir)/../zlib"
3607 AC_ARG_WITH(system-zlib,
3608 [ --with-system-zlib use installed libz],
3615 dnl Very limited version of automake's enable-maintainer-mode
3617 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3618 dnl maintainer-mode is disabled by default
3619 AC_ARG_ENABLE(maintainer-mode,
3620 [ --enable-maintainer-mode
3621 enable make rules and dependencies not useful
3622 (and sometimes confusing) to the casual installer],
3623 maintainer_mode=$enableval,
3626 AC_MSG_RESULT($maintainer_mode)
3628 if test "$maintainer_mode" = "yes"; then
3639 # Make empty files to contain the specs and options for each language.
3640 # Then add #include lines to for a compiler that has specs and/or options.
3646 # These (without "all_") are set in each config-lang.in.
3647 # `language' must be a single word so is spelled singularly.
3650 all_outputs='Makefile gccbug'
3651 # List of language makefile fragments.
3653 # List of language subdirectory makefiles. Deprecated.
3655 # Additional files for gengtype
3656 all_gtfiles="$target_gtfiles"
3658 # These are the languages that are set in --enable-languages,
3659 # and are available in the GCC tree.
3660 all_selected_languages=
3662 # Add the language fragments.
3663 # Languages are added via two mechanisms. Some information must be
3664 # recorded in makefile variables, these are defined in config-lang.in.
3665 # We accumulate them and plug them into the main Makefile.
3666 # The other mechanism is a set of hooks for each of the main targets
3667 # like `clean', `install', etc.
3669 language_hooks="Make-hooks"
3671 for lang in ${srcdir}/*/config-lang.in
3674 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3676 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3677 if test "x$lang_alias" = x
3679 echo "$lang doesn't set \$language." 1>&2
3682 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3683 subdirs="$subdirs $subdir"
3685 # $gcc_subdir is where the gcc integration files are to be found
3686 # for a language, both for internal compiler purposes (compiler
3687 # sources implementing front-end to GCC tree converters), and for
3688 # build infrastructure purposes (Make-lang.in, etc.)
3690 # This will be <subdir> (relative to $srcdir) if a line like
3691 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3692 # is found in <langdir>/config-lang.in, and will remain <langdir>
3695 # Except for the language alias (fetched above), the regular
3696 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3697 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3698 # only this and the language alias.
3700 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3701 if [ "$gcc_subdir" = "" ]; then
3702 gcc_subdir="$subdir"
3705 case ",$enable_languages," in
3707 all_selected_languages="$all_selected_languages $lang_alias"
3708 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3709 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3721 . ${srcdir}/$gcc_subdir/config-lang.in
3722 if test "x$language" = x
3724 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3729 case ",$enable_languages," in
3732 for i in $subdir_requires; do
3733 test -f "${srcdir}/$i/config-lang.in" && continue
3741 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3742 if test -f $srcdir/$gcc_subdir/lang.opt; then
3743 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3745 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3746 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3748 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3749 then all_lang_makefiles="$gcc_subdir/Makefile"
3751 all_languages="$all_languages $language"
3752 all_compilers="$all_compilers $compilers"
3753 all_outputs="$all_outputs $outputs"
3754 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3757 # Pick up gtfiles for c
3759 . ${srcdir}/c-config-lang.in
3760 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3763 for language in $all_selected_languages
3765 check_languages="$check_languages check-$language"
3768 # We link each language in with a set of hooks, reached indirectly via
3769 # lang.${target}. Only do so for selected languages.
3773 target_list="all.cross start.encap rest.encap tags \
3774 install-common install-man install-info install-pdf dvi pdf \
3775 html uninstall info man srcextra srcman srcinfo \
3776 mostlyclean clean distclean maintainer-clean"
3778 for t in $target_list
3781 for lang in $all_selected_languages
3785 echo "lang.$t: $x" >> Make-hooks
3794 echo "dir ." > .gdbinit
3795 echo "dir ${srcdir}" >> .gdbinit
3796 if test x$gdb_needs_out_file_path = xyes
3798 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3800 if test "x$subdirs" != x; then
3803 echo "dir ${srcdir}/$s" >> .gdbinit
3806 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3808 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3809 AC_SUBST(gcc_tooldir)
3812 # Find a directory in which to install a shared libgcc.
3814 AC_ARG_ENABLE(version-specific-runtime-libs,
3815 [ --enable-version-specific-runtime-libs
3816 specify that runtime libraries should be
3817 installed in a compiler-specific directory])
3819 AC_ARG_WITH(slibdir,
3820 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3821 slibdir="$with_slibdir",
3822 if test "${enable_version_specific_runtime_libs+set}" = set; then
3823 slibdir='$(libsubdir)'
3824 elif test "$host" != "$target"; then
3825 slibdir='$(build_tooldir)/lib'
3831 AC_ARG_WITH(datarootdir,
3832 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3833 datarootdir="\${prefix}/$with_datarootdir",
3834 datarootdir='$(prefix)/share')
3835 AC_SUBST(datarootdir)
3838 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3839 docdir="\${prefix}/$with_docdir",
3840 docdir='$(datarootdir)')
3843 AC_ARG_WITH(htmldir,
3844 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3845 htmldir="\${prefix}/$with_htmldir",
3846 htmldir='$(docdir)')
3849 # Substitute configuration variables
3852 AC_SUBST(all_compilers)
3853 AC_SUBST(all_gtfiles)
3854 AC_SUBST(all_lang_makefrags)
3855 AC_SUBST(all_lang_makefiles)
3856 AC_SUBST(all_languages)
3857 AC_SUBST(all_selected_languages)
3858 AC_SUBST(build_exeext)
3859 AC_SUBST(build_install_headers_dir)
3860 AC_SUBST(build_xm_file_list)
3861 AC_SUBST(build_xm_include_list)
3862 AC_SUBST(build_xm_defines)
3863 AC_SUBST(build_file_translate)
3864 AC_SUBST(check_languages)
3865 AC_SUBST(cpp_install_dir)
3866 AC_SUBST(xmake_file)
3867 AC_SUBST(tmake_file)
3868 AC_SUBST(extra_gcc_objs)
3869 AC_SUBST(extra_headers_list)
3870 AC_SUBST(extra_objs)
3871 AC_SUBST(extra_parts)
3872 AC_SUBST(extra_passes)
3873 AC_SUBST(extra_programs)
3874 AC_SUBST(float_h_file)
3875 AC_SUBST(gcc_config_arguments)
3876 AC_SUBST(gcc_gxx_include_dir)
3877 AC_SUBST(host_exeext)
3878 AC_SUBST(host_xm_file_list)
3879 AC_SUBST(host_xm_include_list)
3880 AC_SUBST(host_xm_defines)
3881 AC_SUBST(out_host_hook_obj)
3883 AC_SUBST(lang_opt_files)
3884 AC_SUBST(lang_specs_files)
3885 AC_SUBST(lang_tree_files)
3886 AC_SUBST(local_prefix)
3888 AC_SUBST(objc_boehm_gc)
3890 AC_SUBST(out_object_file)
3891 AC_SUBST(thread_file)
3892 AC_SUBST(tm_file_list)
3893 AC_SUBST(tm_include_list)
3894 AC_SUBST(tm_defines)
3895 AC_SUBST(tm_p_file_list)
3896 AC_SUBST(tm_p_include_list)
3897 AC_SUBST(xm_file_list)
3898 AC_SUBST(xm_include_list)
3899 AC_SUBST(xm_defines)
3900 AC_SUBST(c_target_objs)
3901 AC_SUBST(cxx_target_objs)
3902 AC_SUBST(fortran_target_objs)
3903 AC_SUBST(target_cpu_default)
3905 AC_SUBST_FILE(language_hooks)
3908 if test x${build} = x${host} ; then
3909 if test x${host} = x${target} ; then
3910 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3912 echo "Links are now set up to build a cross-compiler" 1>&2
3913 echo " from ${host} to ${target}." 1>&2
3916 if test x${host} = x${target} ; then
3917 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3918 echo " for ${target}." 1>&2
3920 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3921 echo " from ${host} to ${target}." 1>&2
3925 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3926 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3928 AC_ARG_VAR(PPLLIBS,[How to link PPL])
3929 AC_ARG_VAR(PPLINC,[How to find PPL include files])
3931 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
3932 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
3933 if test "x${CLOOGLIBS}" != "x" ; then
3934 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
3937 # Configure the subdirectories
3938 # AC_CONFIG_SUBDIRS($subdirs)
3940 # Create the Makefile
3941 # and configure language subdirectories
3942 AC_CONFIG_FILES($all_outputs)
3944 AC_CONFIG_COMMANDS([default],
3946 case ${CONFIG_HEADERS} in
3947 *auto-host.h:config.in*)
3950 # Make sure all the subdirs exist.
3951 for d in $subdirs doc build
3953 test -d $d || mkdir $d
3956 [subdirs='$subdirs'])