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, 2009 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$gcc_cv_func_mbstowcs_works = xyes; then
1016 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1017 [Define this macro if mbstowcs does not crash when its
1018 first argument is NULL.])
1022 AC_CHECK_TYPE(ssize_t, int)
1023 AC_CHECK_TYPE(caddr_t, char *)
1025 gcc_AC_FUNC_MMAP_BLACKLIST
1029 # Under VMS, vfork works very differently than on Unix. The standard test
1030 # won't work, and it isn't easily adaptable. It makes more sense to
1032 ac_cv_func_vfork_works=yes
1038 # Until we have in-tree GNU iconv:
1040 AC_SUBST(LIBICONV_DEP)
1046 # We will need to find libiberty.h and ansidecl.h
1047 saved_CFLAGS="$CFLAGS"
1048 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1049 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1050 strsignal strstr strverscmp \
1051 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1052 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1053 #include "ansidecl.h"
1054 #include "system.h"])
1056 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1057 #include "ansidecl.h"
1059 #ifdef HAVE_SYS_RESOURCE_H
1060 #include <sys/resource.h>
1064 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1065 #include "ansidecl.h"
1067 #ifdef HAVE_SYS_RESOURCE_H
1068 #include <sys/resource.h>
1070 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1071 [Define to `long' if <sys/resource.h> doesn't define.])])
1073 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1074 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1075 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1076 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1077 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1078 #include "ansidecl.h"
1087 gcc_AC_CHECK_DECLS(times, , ,[
1088 #include "ansidecl.h"
1090 #ifdef HAVE_SYS_TIMES_H
1091 #include <sys/times.h>
1095 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1096 #include "ansidecl.h"
1101 # More time-related stuff.
1102 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1103 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1104 #include "ansidecl.h"
1106 #ifdef HAVE_SYS_TIMES_H
1107 #include <sys/times.h>
1109 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1110 if test $ac_cv_struct_tms = yes; then
1111 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1112 [Define if <sys/times.h> defines struct tms.])
1115 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1116 # revisit after autoconf 2.50.
1117 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1122 if test $gcc_cv_type_clock_t = yes; then
1123 AC_DEFINE(HAVE_CLOCK_T, 1,
1124 [Define if <time.h> defines clock_t.])
1127 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1128 CFLAGS="$saved_CFLAGS"
1130 gcc_AC_INITFINI_ARRAY
1132 # mkdir takes a single argument on some systems.
1133 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1141 # With Setjmp/Longjmp based exception handling.
1142 AC_ARG_ENABLE(sjlj-exceptions,
1143 [ --enable-sjlj-exceptions
1144 arrange to use setjmp/longjmp exception handling],
1147 if test $enableval != yes; then
1148 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1153 force_sjlj_exceptions=yes],
1156 force_sjlj_exceptions=yes
1160 force_sjlj_exceptions=no
1163 if test $force_sjlj_exceptions = yes; then
1164 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1165 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1166 [Define 0/1 to force the choice for exception handling model.])
1169 # For platforms with the unwind ABI which includes an unwind library,
1170 # libunwind, we can choose to use the system libunwind.
1171 # config.gcc also contains tests of with_system_libunwind.
1172 GCC_CHECK_UNWIND_GETIPINFO
1174 # --------------------------------------------------------
1175 # Build, host, and target specific configuration fragments
1176 # --------------------------------------------------------
1178 # Collect build-machine-specific information.
1179 . ${srcdir}/config.build
1181 # Collect host-machine-specific information.
1182 . ${srcdir}/config.host
1186 # Collect target-machine-specific information.
1187 . ${srcdir}/config.gcc
1189 extra_objs="${host_extra_objs} ${extra_objs}"
1190 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1192 # Default the target-machine variables that were not explicitly set.
1193 if test x"$tm_file" = x
1194 then tm_file=$cpu_type/$cpu_type.h; fi
1196 if test x"$extra_headers" = x
1197 then extra_headers=; fi
1199 if test x$md_file = x
1200 then md_file=$cpu_type/$cpu_type.md; fi
1202 if test x$out_file = x
1203 then out_file=$cpu_type/$cpu_type.c; fi
1205 if test x"$tmake_file" = x
1206 then tmake_file=$cpu_type/t-$cpu_type
1209 if test x"$dwarf2" = xyes
1210 then tm_file="$tm_file tm-dwarf2.h"
1213 # Say what files are being used for the output code and MD file.
1214 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1215 echo "Using \`$srcdir/config/$md_file' as machine description file."
1217 # If any of the xm_file variables contain nonexistent files, warn
1218 # about them and drop them.
1221 for x in $build_xm_file; do
1222 if test -f $srcdir/config/$x
1224 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1230 for x in $host_xm_file; do
1231 if test -f $srcdir/config/$x
1233 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1239 for x in $xm_file; do
1240 if test -f $srcdir/config/$x
1242 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1248 for f in $tm_file; do
1251 if test $count = ax; then
1252 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1254 echo "Using the following target machine macro files:"
1255 for f in $tm_file; do
1256 echo " $srcdir/config/$f"
1260 if test x$need_64bit_hwint = xyes; then
1261 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1262 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1265 if test x$use_long_long_for_widest_fast_int = xyes; then
1266 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1267 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1268 efficiently supported by the host hardware.])
1272 for f in $host_xm_file; do
1275 if test $count = a; then
1277 elif test $count = ax; then
1278 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1280 echo "Using the following host machine macro files:"
1281 for f in $host_xm_file; do
1282 echo " $srcdir/config/$f"
1285 echo "Using ${out_host_hook_obj} for host machine hooks."
1287 if test "$host_xm_file" != "$build_xm_file"; then
1289 for f in $build_xm_file; do
1292 if test $count = a; then
1294 elif test $count = ax; then
1295 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1297 echo "Using the following build machine macro files:"
1298 for f in $build_xm_file; do
1299 echo " $srcdir/config/$f"
1306 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1307 gcc_cv_mcontext_underscores,
1309 #include <sys/cdefs.h>
1310 #include <sys/signal.h>
1311 #include <ucontext.h>
1312 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1314 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1315 if test $gcc_cv_mcontext_underscores = yes; then
1316 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1317 [mcontext_t fields start with __])
1326 # Check if a valid thread package
1327 case ${enable_threads} in
1330 target_thread_file='single'
1334 target_thread_file='single'
1336 aix | dce | gnat | irix | posix | posix95 | rtems | \
1337 single | solaris | vxworks | win32 | mipssde)
1338 target_thread_file=${enable_threads}
1341 echo "${enable_threads} is an unknown thread package" 1>&2
1346 if test x${thread_file} = x; then
1347 # No thread file set by target-specific clauses in config.gcc,
1348 # so use file chosen by default logic above
1349 thread_file=${target_thread_file}
1352 # Make gthr-default.h if we have a thread file.
1354 if test $thread_file != single; then
1355 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1356 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1357 rm -f gthr-default.h-t
1359 mv -f gthr-default.h-t gthr-default.h
1361 gthread_flags=-DHAVE_GTHR_DEFAULT
1363 AC_SUBST(gthread_flags)
1370 if test x$enable___cxa_atexit = xyes || \
1371 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1372 if test x$host = x$target; then
1374 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1375 # keyed to flag_use_cxa_atexit
1380 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1381 [echo "__cxa_atexit can't be enabled on this target"])
1385 # We can't check for __cxa_atexit when building a cross, so assume
1389 if test x$use_cxa_atexit = xyes; then
1390 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1391 [Define if you want to use __cxa_atexit, rather than atexit, to
1392 register C++ destructors for local statics and global objects.
1393 This is essential for fully standards-compliant handling of
1394 destructors, but requires __cxa_atexit in libc.])
1398 # Look for a file containing extra machine modes.
1399 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1400 extra_modes_file='$(srcdir)'/config/${extra_modes}
1401 AC_SUBST(extra_modes_file)
1402 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1403 [Define to the name of a file containing a list of extra machine modes
1404 for this architecture.])
1407 # Convert extra_options into a form suitable for Makefile use.
1409 for f in $extra_options; do
1410 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1412 AC_SUBST(extra_opt_files)
1414 # auto-host.h is the file containing items generated by autoconf and is
1415 # the first file included by config.h.
1416 # If host=build, it is correct to have bconfig include auto-host.h
1417 # as well. If host!=build, we are in error and need to do more
1418 # work to find out the build config parameters.
1419 if test x$host = x$build
1421 build_auto=auto-host.h
1423 # We create a subdir, then run autoconf in the subdir.
1424 # To prevent recursion we set host and build for the new
1425 # invocation of configure to the build for this invocation
1432 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1433 *) realsrcdir=../${srcdir};;
1435 saved_CFLAGS="${CFLAGS}"
1436 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1437 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1438 ${realsrcdir}/configure \
1439 --enable-languages=${enable_languages-all} \
1440 --target=$target_alias --host=$build_alias --build=$build_alias
1441 CFLAGS="${saved_CFLAGS}"
1443 # We just finished tests for the build machine, so rename
1444 # the file auto-build.h in the gcc directory.
1445 mv auto-host.h ../auto-build.h
1448 build_auto=auto-build.h
1450 AC_SUBST(build_subdir)
1452 tm_file="${tm_file} defaults.h"
1453 tm_p_file="${tm_p_file} tm-preds.h"
1454 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1455 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1456 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1457 # put this back in temporarily.
1458 xm_file="auto-host.h ansidecl.h ${xm_file}"
1465 # Compile in configure arguments.
1466 if test -f configargs.h ; then
1467 # Being re-configured.
1468 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1469 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1471 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1474 # Double all backslashes and backslash all quotes to turn
1475 # gcc_config_arguments into a C string.
1476 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1477 $gcc_config_arguments
1479 gcc_config_arguments_str=`cat conftest.out`
1482 cat > configargs.h <<EOF
1483 /* Generated automatically. */
1484 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1485 static const char thread_model[] = "$thread_file";
1487 static const struct {
1488 const char *name, *value;
1489 } configure_default_options[] = $configure_default_options;
1493 # Internationalization
1494 ZW_GNU_GETTEXT_SISTER_DIR
1496 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1497 # -liconv on the link line twice.
1498 case "$LIBINTL" in *$LIBICONV*)
1502 AC_ARG_ENABLE(secureplt,
1503 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1507 [ --enable-cld enable -mcld by default for 32bit x86], [],
1510 # Windows32 Registry support for specifying GCC installation paths.
1511 AC_ARG_ENABLE(win32-registry,
1512 [ --disable-win32-registry
1513 disable lookup of installation paths in the
1514 Registry on Windows hosts
1515 --enable-win32-registry enable registry lookup (default)
1516 --enable-win32-registry=KEY
1517 use KEY instead of GCC version as the last portion
1518 of the registry key],,)
1521 win32 | pe | cygwin* | mingw32* | uwin*)
1522 if test "x$enable_win32_registry" != xno; then
1523 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1526 if test "x$enable_win32_registry" != xno; then
1527 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1528 [Define to 1 if installation paths should be looked up in the Windows
1529 Registry. Ignored on non-Windows hosts.])
1531 if test "x$enable_win32_registry" != xyes \
1532 && test "x$enable_win32_registry" != x; then
1533 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1534 [Define to be the last component of the Windows registry key under which
1535 to look for installation paths. The full key used will be
1536 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1537 The default is the GCC version number.])
1543 # Get an absolute path to the GCC top-level source directory
1544 holddir=`${PWDCMD-pwd}`
1546 topdir=`${PWDCMD-pwd}`
1549 # Conditionalize the makefile for this host machine.
1551 for f in ${host_xmake_file}
1553 if test -f ${srcdir}/config/$f
1555 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1559 # Conditionalize the makefile for this target machine.
1561 for f in ${tmake_file}
1563 if test -f ${srcdir}/config/$f
1565 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1568 tmake_file="${tmake_file_}"
1570 out_object_file=`basename $out_file .c`.o
1572 tm_file_list="options.h"
1573 tm_include_list="options.h"
1574 for f in $tm_file; do
1577 f=`echo $f | sed 's/^..//'`
1578 tm_file_list="${tm_file_list} $f"
1579 tm_include_list="${tm_include_list} $f"
1582 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1583 tm_include_list="${tm_include_list} $f"
1586 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1587 tm_include_list="${tm_include_list} config/$f"
1594 for f in $tm_p_file; do
1597 tm_p_file_list="${tm_p_file_list} $f"
1598 tm_p_include_list="${tm_p_include_list} $f"
1601 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1602 tm_p_include_list="${tm_p_include_list} config/$f"
1608 for f in $xm_file; do
1611 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1612 xm_include_list="${xm_include_list} $f"
1615 xm_file_list="${xm_file_list} $f"
1616 xm_include_list="${xm_include_list} $f"
1619 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1620 xm_include_list="${xm_include_list} config/$f"
1626 host_xm_include_list=
1627 for f in $host_xm_file; do
1630 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1631 host_xm_include_list="${host_xm_include_list} $f"
1634 host_xm_file_list="${host_xm_file_list} $f"
1635 host_xm_include_list="${host_xm_include_list} $f"
1638 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1639 host_xm_include_list="${host_xm_include_list} config/$f"
1645 for f in $build_xm_file; do
1648 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1649 build_xm_include_list="${build_xm_include_list} $f"
1651 auto-build.h | auto-host.h )
1652 build_xm_file_list="${build_xm_file_list} $f"
1653 build_xm_include_list="${build_xm_include_list} $f"
1656 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1657 build_xm_include_list="${build_xm_include_list} config/$f"
1662 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1663 # cross-compiler which does not use the native headers and libraries.
1664 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1665 CROSS= AC_SUBST(CROSS)
1666 ALL=all.internal AC_SUBST(ALL)
1667 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1669 if test "x$with_build_sysroot" != x; then
1670 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1672 # This value is used, even on a native system, because
1673 # CROSS_SYSTEM_HEADER_DIR is just
1674 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1675 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1678 if test x$host != x$target
1680 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1682 SYSTEM_HEADER_DIR=$build_system_header_dir
1683 case "$host","$target" in
1684 # Darwin crosses can use the host system's libraries and headers,
1685 # because of the fat library support. Of course, it must be the
1686 # same version of Darwin on both sides. Allow the user to
1687 # just say --target=foo-darwin without a version number to mean
1688 # "the version on this system".
1689 *-*-darwin*,*-*-darwin*)
1690 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1691 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1692 if test $hostos = $targetos -o $targetos = darwin ; then
1694 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1699 i?86-*-*,x86_64-*-* \
1700 | powerpc*-*-*,powerpc64*-*-*)
1701 CROSS="$CROSS -DNATIVE_CROSS" ;;
1703 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1704 SYSTEM_HEADER_DIR=$build_system_header_dir
1707 # If this is a cross-compiler that does not
1708 # have its own set of headers then define
1711 # If this is using newlib, without having the headers available now,
1712 # then define inhibit_libc in LIBGCC2_CFLAGS.
1713 # This prevents libgcc2 from containing any code which requires libc
1715 : ${inhibit_libc=false}
1716 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1717 test x$with_newlib = xyes ; } &&
1718 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1721 AC_SUBST(inhibit_libc)
1723 # When building gcc with a cross-compiler, we need to adjust things so
1724 # that the generator programs are still built with the native compiler.
1725 # Also, we cannot run fixincludes.
1727 # These are the normal (build=host) settings:
1728 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1729 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1730 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1731 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1733 # And these apply if build != host, or we are generating coverage data
1734 if test x$build != x$host || test "x$coverage_flags" != x
1736 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1737 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1740 # Expand extra_headers to include complete path.
1741 # This substitutes for lots of t-* files.
1743 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1744 for file in ${extra_headers} ; do
1745 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1748 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1749 if test x"$use_gcc_tgmath" = xyes
1750 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1753 # Define collect2 in Makefile.
1754 case $host_can_use_collect2 in
1756 *) collect2='collect2$(exeext)' ;;
1758 AC_SUBST([collect2])
1760 # Add a definition of USE_COLLECT2 if system wants one.
1761 case $use_collect2 in
1762 no) use_collect2= ;;
1765 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1766 xm_defines="${xm_defines} USE_COLLECT2"
1767 case $host_can_use_collect2 in
1769 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1775 # ---------------------------
1776 # Assembler & linker features
1777 # ---------------------------
1779 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1780 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1781 # However when ld-new is first executed from the build tree, libtool will
1782 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1783 # to the build tree. While doing this we need to use the previous-stage
1784 # linker, or we have an infinite loop. The presence of a shell script as
1785 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1786 # the gcc/collect-ld script. So we need to know how libtool works, or
1787 # exec-tool will fail.
1789 m4_defun([_LT_CONFIG_COMMANDS], [])
1792 AC_SUBST(enable_fast_install)
1794 # Identify the assembler which will work hand-in-glove with the newly
1795 # built GCC, so that we can examine its features. This is the assembler
1796 # which will be driven by the driver program.
1798 # If build != host, and we aren't building gas in-tree, we identify a
1799 # build->target assembler and hope that it will have the same features
1800 # as the host->target assembler we'll be using.
1801 gcc_cv_gas_major_version=
1802 gcc_cv_gas_minor_version=
1803 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1805 m4_pattern_allow([AS_FOR_TARGET])dnl
1806 AS_VAR_SET_IF(gcc_cv_as,, [
1807 if test -x "$DEFAULT_ASSEMBLER"; then
1808 gcc_cv_as="$DEFAULT_ASSEMBLER"
1809 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1810 && test -f ../gas/Makefile \
1811 && test x$build = x$host; then
1812 gcc_cv_as=../gas/as-new$build_exeext
1813 elif test -x as$build_exeext; then
1814 # Build using assembler in the current directory.
1815 gcc_cv_as=./as$build_exeext
1816 elif test -x $AS_FOR_TARGET; then
1817 gcc_cv_as="$AS_FOR_TARGET"
1819 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1822 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1823 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1824 case "$ORIGINAL_AS_FOR_TARGET" in
1825 ./as | ./as$build_exeext) ;;
1826 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1829 AC_MSG_CHECKING(what assembler to use)
1830 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1831 # Single tree build which includes gas. We want to prefer it
1832 # over whatever linker top-level may have detected, since
1833 # we'll use what we're building after installation anyway.
1834 AC_MSG_RESULT(newly built gas)
1836 _gcc_COMPUTE_GAS_VERSION
1837 in_tree_gas_is_elf=no
1838 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1839 || (grep 'obj_format = multi' ../gas/Makefile \
1840 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1842 in_tree_gas_is_elf=yes
1845 AC_MSG_RESULT($gcc_cv_as)
1849 # Identify the linker which will work hand-in-glove with the newly
1850 # built GCC, so that we can examine its features. This is the linker
1851 # which will be driven by the driver program.
1853 # If build != host, and we aren't building gas in-tree, we identify a
1854 # build->target linker and hope that it will have the same features
1855 # as the host->target linker we'll be using.
1856 gcc_cv_gld_major_version=
1857 gcc_cv_gld_minor_version=
1858 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1859 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1861 AS_VAR_SET_IF(gcc_cv_ld,, [
1862 if test -x "$DEFAULT_LINKER"; then
1863 gcc_cv_ld="$DEFAULT_LINKER"
1864 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1865 && test -f ../ld/Makefile \
1866 && test x$build = x$host; then
1867 gcc_cv_ld=../ld/ld-new$build_exeext
1868 elif test -x collect-ld$build_exeext; then
1869 # Build using linker in the current directory.
1870 gcc_cv_ld=./collect-ld$build_exeext
1871 elif test -x $LD_FOR_TARGET; then
1872 gcc_cv_ld="$LD_FOR_TARGET"
1874 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1877 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1878 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1879 case "$ORIGINAL_LD_FOR_TARGET" in
1880 ./collect-ld | ./collect-ld$build_exeext) ;;
1881 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1884 AC_MSG_CHECKING(what linker to use)
1885 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1886 # Single tree build which includes ld. We want to prefer it
1887 # over whatever linker top-level may have detected, since
1888 # we'll use what we're building after installation anyway.
1889 AC_MSG_RESULT(newly built ld)
1891 in_tree_ld_is_elf=no
1892 if (grep 'EMUL = .*elf' ../ld/Makefile \
1893 || grep 'EMUL = .*linux' ../ld/Makefile \
1894 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1895 in_tree_ld_is_elf=yes
1897 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
1900 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1901 if test x$gcc_cv_gld_version != x; then
1905 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1906 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1909 AC_MSG_RESULT($gcc_cv_ld)
1913 # Figure out what nm we will be using.
1914 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1915 AS_VAR_SET_IF(gcc_cv_nm,, [
1916 if test -f $gcc_cv_binutils_srcdir/configure.in \
1917 && test -f ../binutils/Makefile \
1918 && test x$build = x$host; then
1919 gcc_cv_nm=../binutils/nm-new$build_exeext
1920 elif test -x nm$build_exeext; then
1921 gcc_cv_nm=./nm$build_exeext
1922 elif test -x $NM_FOR_TARGET; then
1923 gcc_cv_nm="$NM_FOR_TARGET"
1925 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1928 AC_MSG_CHECKING(what nm to use)
1929 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1930 # Single tree build which includes binutils.
1931 AC_MSG_RESULT(newly built nm)
1934 AC_MSG_RESULT($gcc_cv_nm)
1938 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1939 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1940 case "$ORIGINAL_NM_FOR_TARGET" in
1941 ./nm | ./nm$build_exeext) ;;
1942 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1946 # Figure out what objdump we will be using.
1947 AS_VAR_SET_IF(gcc_cv_objdump,, [
1948 if test -f $gcc_cv_binutils_srcdir/configure.in \
1949 && test -f ../binutils/Makefile \
1950 && test x$build = x$host; then
1951 # Single tree build which includes binutils.
1952 gcc_cv_objdump=../binutils/objdump$build_exeext
1953 elif test -x objdump$build_exeext; then
1954 gcc_cv_objdump=./objdump$build_exeext
1955 elif test -x $OBJDUMP_FOR_TARGET; then
1956 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1958 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1961 AC_MSG_CHECKING(what objdump to use)
1962 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
1963 # Single tree build which includes binutils.
1964 AC_MSG_RESULT(newly built objdump)
1965 elif test x$gcc_cv_objdump = x; then
1966 AC_MSG_RESULT(not found)
1968 AC_MSG_RESULT($gcc_cv_objdump)
1971 # Figure out what readelf we will be using.
1972 AS_VAR_SET_IF(gcc_cv_readelf,, [
1973 if test -f $gcc_cv_binutils_srcdir/configure.in \
1974 && test -f ../binutils/Makefile \
1975 && test x$build = x$host; then
1976 # Single tree build which includes binutils.
1977 gcc_cv_readelf=../binutils/readelf$build_exeext
1978 elif test -x readelf$build_exeext; then
1979 gcc_cv_readelf=./readelf$build_exeext
1981 AC_PATH_PROG(gcc_cv_readelf, readelf)
1984 AC_MSG_CHECKING(what readelf to use)
1985 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
1986 # Single tree build which includes binutils.
1987 AC_MSG_RESULT(newly built readelf)
1988 elif test x$gcc_cv_readelf = x; then
1989 AC_MSG_RESULT(not found)
1991 AC_MSG_RESULT($gcc_cv_readelf)
1994 # Figure out what assembler alignment features are present.
1995 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1999 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2000 [Define if your assembler supports .balign and .p2align.])])
2002 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2005 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2006 [Define if your assembler supports specifying the maximum number
2007 of bytes to skip when using the GAS .p2align command.])])
2009 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2012 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2013 [Define if your assembler supports .literal16.])])
2015 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2017 [conftest_label1: .word 0
2019 conftest_label2: .word 0
2021 [if test x$gcc_cv_nm != x; then
2022 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2023 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2024 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2026 else gcc_cv_as_subsection_m1=yes
2028 rm -f conftest.nm1 conftest.nm2
2030 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2031 [Define if your assembler supports .subsection and .subsection -1 starts
2032 emitting at the beginning of your section.])])
2034 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2037 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2039 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2041 [ .weakref foobar, barfnot],,
2042 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2044 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2047 .NSUBSPA $CODE$,COMDAT],,
2048 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2050 # .hidden needs to be supported in both the assembler and the linker,
2051 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2052 # This is irritatingly difficult to feature test for; we have to check the
2053 # date string after the version number. If we've got an in-tree
2054 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2056 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2057 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2062 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2063 [if test $in_tree_ld = yes ; then
2065 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2066 && test $in_tree_ld_is_elf = yes; then
2067 gcc_cv_ld_hidden=yes
2071 gcc_cv_ld_hidden=yes
2072 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2073 if echo "$ld_ver" | grep GNU > /dev/null; then
2074 ld_vers=`echo $ld_ver | sed -n \
2075 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2076 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2077 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2078 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2079 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2080 if test 0"$ld_date" -lt 20020404; then
2081 if test -n "$ld_date"; then
2082 # If there was date string, but was earlier than 2002-04-04, fail
2084 elif test -z "$ld_vers"; then
2085 # If there was no date string nor ld version number, something is wrong
2088 test -z "$ld_vers_patch" && ld_vers_patch=0
2089 if test "$ld_vers_major" -lt 2; then
2091 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2092 gcc_cv_ld_hidden="no"
2093 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2100 hppa64*-*-hpux* | ia64*-*-hpux*)
2101 gcc_cv_ld_hidden=yes
2103 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2104 gcc_cv_ld_hidden=yes
2113 libgcc_visibility=no
2114 AC_SUBST(libgcc_visibility)
2115 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2116 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2117 libgcc_visibility=yes
2118 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2119 [Define if your assembler and linker support .hidden.])
2122 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2123 gcc_cv_ld_ro_rw_mix=unknown
2124 if test $in_tree_ld = yes ; then
2125 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2126 && test $in_tree_ld_is_elf = yes; then
2127 gcc_cv_ld_ro_rw_mix=read-write
2129 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2130 echo '.section myfoosect, "a"' > conftest1.s
2131 echo '.section myfoosect, "aw"' > conftest2.s
2132 echo '.byte 1' >> conftest2.s
2133 echo '.section myfoosect, "a"' > conftest3.s
2134 echo '.byte 0' >> conftest3.s
2135 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2136 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2137 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2138 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2139 conftest2.o conftest3.o > /dev/null 2>&1; then
2140 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2141 | sed -e '/myfoosect/!d' -e N`
2142 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2143 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2144 gcc_cv_ld_ro_rw_mix=read-only
2146 gcc_cv_ld_ro_rw_mix=read-write
2151 rm -f conftest.* conftest[123].*
2154 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2155 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2156 [Define if your linker links a mix of read-only
2157 and read-write sections into a read-write section.])
2159 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2161 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2162 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2170 [# GAS versions before 2.11 do not support uleb128,
2171 # despite appearing to.
2172 # ??? There exists an elf-specific test that will crash
2173 # the assembler. Perhaps it's better to figure out whether
2174 # arbitrary sections are supported and try the test.
2175 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2176 if echo "$as_ver" | grep GNU > /dev/null; then
2178 as_vers=`echo $as_ver | sed -n \
2179 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2180 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2181 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2183 if test $as_major -eq 2 && test $as_minor -lt 11
2185 else gcc_cv_as_leb128=yes
2188 [AC_DEFINE(HAVE_AS_LEB128, 1,
2189 [Define if your assembler supports .sleb128 and .uleb128.])])
2191 # Check if we have assembler support for unwind directives.
2192 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2199 .cfi_escape 1, 2, 3, 4, 5
2203 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2204 # read-only and read-write sections, we need to make sure that the
2205 # assembler used emits read-write .eh_frame sections.
2206 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2207 if test "x$gcc_cv_objdump" != x; then
2208 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2209 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2210 gcc_cv_as_cfi_directive=no
2212 gcc_cv_as_cfi_directive=yes
2215 # no objdump, err on the side of caution
2216 gcc_cv_as_cfi_directive=no
2219 gcc_cv_as_cfi_directive=yes
2223 gcc_cv_as_cfi_directive=yes
2226 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2227 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2231 .cfi_adjust_cfa_offset 64
2233 .cfi_adjust_cfa_offset 128
2237 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2238 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2239 gcc_cv_as_cfi_advance_working=yes
2244 # no readelf, err on the side of caution
2245 gcc_cv_as_cfi_advance_working=no
2247 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2248 [`if test $gcc_cv_as_cfi_directive = yes \
2249 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2250 [Define 0/1 if your assembler supports CFI directives.])
2252 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2253 gcc_cv_as_cfi_personality_directive, ,,
2256 .cfi_personality 0, symbol
2258 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2259 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2260 then echo 1; else echo 0; fi`],
2261 [Define 0/1 if your assembler supports .cfi_personality.])
2263 # GAS versions up to and including 2.11.0 may mis-optimize
2265 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2273 .section .eh_frame,"aw",@progbits
2275 .4byte .LECIE1-.LSCIE1
2289 .4byte .LEFDE1-.LASFDE1
2291 .4byte .LASFDE1-__FRAME_BEGIN__
2299 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2300 cat > conftest.lit <<EOF
2301 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2302 0010 01000000 12000000 18000000 00000000 ................
2303 0020 08000000 04080000 0044 .........D @&t@
2305 cat > conftest.big <<EOF
2306 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2307 0010 00000001 00000012 00000018 00000000 ................
2308 0020 00000008 04000000 0844 .........D @&t@
2310 # If the assembler didn't choke, and we can objdump,
2311 # and we got the correct data, then succeed.
2312 # The text in the here-document typically retains its unix-style line
2313 # endings, while the output of objdump will use host line endings.
2314 # Therefore, use diff -b for the comparisons.
2315 if test x$gcc_cv_objdump != x \
2316 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2317 | tail -3 > conftest.got \
2318 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2319 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2321 gcc_cv_as_eh_frame=yes
2322 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2323 gcc_cv_as_eh_frame=buggy
2325 # Uh oh, what do we do now?
2326 gcc_cv_as_eh_frame=no
2329 if test $gcc_cv_as_eh_frame = buggy; then
2330 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2331 [Define if your assembler mis-optimizes .eh_frame data.])
2334 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2335 [elf,2,12,0], [--fatal-warnings],
2336 [.section .rodata.str, "aMS", @progbits, 1])
2337 if test $gcc_cv_as_shf_merge = no; then
2338 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2339 [elf,2,12,0], [--fatal-warnings],
2340 [.section .rodata.str, "aMS", %progbits, 1])
2342 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2343 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2344 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2346 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2347 [elf,2,16,0], [--fatal-warnings],
2348 [.section .text,"axG",@progbits,.foo,comdat])
2349 if test $gcc_cv_as_comdat_group = yes; then
2350 gcc_cv_as_comdat_group_percent=no
2352 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2353 [elf,2,16,0], [--fatal-warnings],
2354 [.section .text,"axG",%progbits,.foo,comdat])
2356 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2358 if test 0"$ld_date" -lt 20050308; then
2359 if test -n "$ld_date"; then
2360 # If there was date string, but was earlier than 2005-03-08, fail
2362 elif test "$ld_vers_major" -lt 2; then
2364 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2369 # assume linkers other than GNU ld don't support COMDAT group
2372 if test $comdat_group = no; then
2373 gcc_cv_as_comdat_group=no
2374 gcc_cv_as_comdat_group_percent=no
2376 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2377 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2378 [Define 0/1 if your assembler and linker support COMDAT groups.])
2380 # Thread-local storage - the check is heavily parameterized.
2389 .section ".tdata","awT",@progbits
2392 ldq $27,__tls_get_addr($29) !literal!1
2393 lda $16,foo($29) !tlsgd!1
2394 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2395 ldq $27,__tls_get_addr($29) !literal!2
2396 lda $16,foo($29) !tlsldm!2
2397 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2398 ldq $1,foo($29) !gotdtprel
2399 ldah $2,foo($29) !dtprelhi
2400 lda $3,foo($2) !dtprello
2401 lda $4,foo($29) !dtprel
2402 ldq $1,foo($29) !gottprel
2403 ldah $2,foo($29) !tprelhi
2404 lda $3,foo($2) !tprello
2405 lda $4,foo($29) !tprel'
2408 tls_as_opt=--fatal-warnings
2410 cris-*-*|crisv32-*-*)
2412 .section ".tdata","awT",@progbits
2419 tls_as_opt=--fatal-warnings
2423 .section ".tdata","awT",@progbits
2435 .section ".tdata","awT",@progbits
2439 addil LT%foo-$tls_gdidx$,gp
2440 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2443 addil LT%foo-$tls_ldidx$,gp
2445 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2446 addil LR%foo-$tls_dtpoff$,%ret0
2447 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2449 addil LT%foo-$tls_ieoff$,gp
2450 ldw RT%foo-$tls_ieoff$(%r1),%t2
2453 addil LR%foo-$tls_leoff$,%t1
2454 ldo RR%foo-$tls_leoff$(%r1),%t2'
2457 tls_as_opt=--fatal-warnings
2461 .section ".tdata","awT",%progbits
2474 .section ".tdata","awT",@progbits
2478 leal foo@TLSGD(,%ebx,1), %eax
2479 leal foo@TLSLDM(%ebx), %eax
2480 leal foo@DTPOFF(%eax), %edx
2481 movl foo@GOTTPOFF(%ebx), %eax
2482 subl foo@GOTTPOFF(%ebx), %eax
2483 addl foo@GOTNTPOFF(%ebx), %eax
2484 movl foo@INDNTPOFF, %eax
2485 movl $foo@TPOFF, %eax
2486 subl $foo@TPOFF, %eax
2487 leal foo@NTPOFF(%ecx), %eax'
2490 tls_as_opt=--fatal-warnings
2494 .section ".tdata","awT",@progbits
2498 leaq foo@TLSGD(%rip), %rdi
2499 leaq foo@TLSLD(%rip), %rdi
2500 leaq foo@DTPOFF(%rax), %rdx
2501 movq foo@GOTTPOFF(%rip), %rax
2502 movq $foo@TPOFF, %rax'
2505 tls_as_opt=--fatal-warnings
2509 .section ".tdata","awT",@progbits
2512 addl r16 = @ltoff(@dtpmod(foo#)), gp
2513 addl r17 = @ltoff(@dtprel(foo#)), gp
2514 addl r18 = @ltoff(@tprel(foo#)), gp
2515 addl r19 = @dtprel(foo#), gp
2516 adds r21 = @dtprel(foo#), r13
2517 movl r23 = @dtprel(foo#)
2518 addl r20 = @tprel(foo#), gp
2519 adds r22 = @tprel(foo#), r13
2520 movl r24 = @tprel(foo#)'
2523 tls_as_opt=--fatal-warnings
2527 .section .tdata,"awT",@progbits
2531 addiu $4, $28, %tlsgd(x)
2532 addiu $4, $28, %tlsldm(x)
2533 lui $4, %dtprel_hi(x)
2534 addiu $4, $4, %dtprel_lo(x)
2535 lw $4, %gottprel(x)($28)
2536 lui $4, %tprel_hi(x)
2537 addiu $4, $4, %tprel_lo(x)'
2540 tls_as_opt='-32 --fatal-warnings'
2544 .section ".tdata","awT",@progbits
2552 addi 3,31,ld0@got@tlsgd
2554 addi 3,31,x1@got@tlsld
2557 addis 9,3,x2@dtprel@ha
2558 addi 9,9,x2@dtprel@l
2559 lwz 9,x3@got@tprel(31)
2562 addis 9,2,x2@tprel@ha
2563 addi 9,9,x2@tprel@l'
2566 tls_as_opt="-a32 --fatal-warnings"
2570 .section ".tdata","awT",@progbits
2578 addi 3,2,ld0@got@tlsgd
2584 addi 3,2,x1@got@tlsld
2590 addis 9,3,x2@dtprel@ha
2591 addi 9,9,x2@dtprel@l
2594 ld 9,x3@got@dtprel(2)
2600 tls_as_opt="-a64 --fatal-warnings"
2604 .section ".tdata","awT",@progbits
2613 l %r1,foo@GOTNTPOFF(%r12)
2614 l %r1,0(%r1):tls_load:foo
2615 bas %r14,0(%r1,%r13):tls_gdcall:foo
2616 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2619 tls_as_opt="-m31 --fatal-warnings"
2623 .section ".tdata","awT",@progbits
2631 lg %r1,foo@GOTNTPOFF(%r12)
2632 larl %r1,foo@INDNTPOFF
2633 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2634 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2637 tls_as_opt="-m64 -Aesame --fatal-warnings"
2639 sh-*-* | sh[34]-*-*)
2641 .section ".tdata","awT",@progbits
2651 tls_as_opt=--fatal-warnings
2655 sparc*-sun-solaris2.[56789]*)
2656 # TLS was introduced in the Solaris 9 4/04 release but
2657 # we do not enable it by default on Solaris 9 either.
2658 if test "x$enable_tls" = xyes ; then
2664 sparc*-sun-solaris2.*)
2671 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2673 .section ".tdata",#alloc,#write,#tls
2676 sethi %tgd_hi22(foo), %o0
2677 add %o0, %tgd_lo10(foo), %o1
2678 add %l7, %o1, %o0, %tgd_add(foo)
2679 call __tls_get_addr, %tgd_call(foo)
2680 sethi %tldm_hi22(foo), %l1
2681 add %l1, %tldm_lo10(foo), %l2
2682 add %l7, %l2, %o0, %tldm_add(foo)
2683 call __tls_get_addr, %tldm_call(foo)
2684 sethi %tldo_hix22(foo), %l3
2685 xor %l3, %tldo_lox10(foo), %l4
2686 add %o0, %l4, %l5, %tldo_add(foo)
2687 sethi %tie_hi22(foo), %o3
2688 add %o3, %tie_lo10(foo), %o3
2689 ld [%l7 + %o3], %o2, %tie_ld(foo)
2690 add %g7, %o2, %o4, %tie_add(foo)
2691 sethi %tle_hix22(foo), %l1
2692 xor %l1, %tle_lox10(foo), %o5
2693 ld [%g7 + %o5], %o1'
2698 .section ".tdata","awT",@progbits
2701 sethi %tgd_hi22(foo), %o0
2702 add %o0, %tgd_lo10(foo), %o1
2703 add %l7, %o1, %o0, %tgd_add(foo)
2704 call __tls_get_addr, %tgd_call(foo)
2705 sethi %tldm_hi22(foo), %l1
2706 add %l1, %tldm_lo10(foo), %l2
2707 add %l7, %l2, %o0, %tldm_add(foo)
2708 call __tls_get_addr, %tldm_call(foo)
2709 sethi %tldo_hix22(foo), %l3
2710 xor %l3, %tldo_lox10(foo), %l4
2711 add %o0, %l4, %l5, %tldo_add(foo)
2712 sethi %tie_hi22(foo), %o3
2713 add %o3, %tie_lo10(foo), %o3
2714 ld [%l7 + %o3], %o2, %tie_ld(foo)
2715 add %g7, %o2, %o4, %tie_add(foo)
2716 sethi %tle_hix22(foo), %l1
2717 xor %l1, %tle_lox10(foo), %o5
2718 ld [%g7 + %o5], %o1'
2721 tls_as_opt="-32 --fatal-warnings"
2726 .section ".tdata","awT",@progbits
2729 movi a8, foo@TLSFUNC
2730 movi a10, foo@TLSARG
2731 callx8.tls a8, foo@TLSCALL'
2738 if test "x$enable_tls" = xno ; then
2739 : # TLS explicitly disabled.
2740 elif test "x$enable_tls" = xyes ; then
2741 set_have_as_tls=yes # TLS explicitly enabled.
2742 elif test -z "$tls_first_major"; then
2743 : # If we don't have a check, assume no support.
2745 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2746 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2747 [set_have_as_tls=yes])
2749 if test $set_have_as_tls = yes ; then
2750 AC_DEFINE(HAVE_AS_TLS, 1,
2751 [Define if your assembler supports thread-local storage.])
2754 # Target-specific assembler checks.
2756 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2757 gcc_cv_ld_static_dynamic=no
2758 if test $in_tree_ld = yes ; then
2759 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2760 gcc_cv_ld_static_dynamic=yes
2762 elif test x$gcc_cv_ld != x; then
2763 # Check if linker supports -Bstatic/-Bdynamic option
2764 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2765 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2766 gcc_cv_ld_static_dynamic=yes
2769 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2770 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2771 [Define if your linker supports -Bstatic/-Bdynamic option.])
2773 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2775 if test x"$demangler_in_ld" = xyes; then
2776 AC_MSG_CHECKING(linker --demangle support)
2777 gcc_cv_ld_demangle=no
2778 if test $in_tree_ld = yes; then
2779 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2780 gcc_cv_ld_demangle=yes
2782 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2783 # Check if the GNU linker supports --demangle option
2784 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2785 gcc_cv_ld_demangle=yes
2788 if test x"$gcc_cv_ld_demangle" = xyes; then
2789 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2790 [Define if your linker supports --demangle option.])
2792 AC_MSG_RESULT($gcc_cv_ld_demangle)
2796 # All TARGET_ABI_OSF targets.
2797 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2798 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2799 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2802 extbl $3, $2, $3 !lituse_bytoff!1
2803 ldq $2, a($29) !literal!1
2804 ldq $4, b($29) !literal!2
2805 ldq_u $3, 0($2) !lituse_base!1
2806 ldq $27, f($29) !literal!5
2807 jsr $26, ($27), f !lituse_jsr!5
2808 ldah $29, 0($26) !gpdisp!3
2809 lda $0, c($29) !gprel
2810 ldah $1, d($29) !gprelhigh
2811 lda $1, d($1) !gprellow
2812 lda $29, 0($29) !gpdisp!3],,
2813 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2814 [Define if your assembler supports explicit relocations.])])
2815 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2816 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2819 ldq $27, a($29) !literal!1
2820 jsr $26, ($27), a !lituse_jsrdirect!1],,
2821 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2822 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2826 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2827 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2828 [-no-mul-bug-abort], [.text],,
2829 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2830 [Define if your assembler supports the -no-mul-bug-abort option.])])
2834 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2835 [.register %g2, #scratch],,
2836 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2837 [Define if your assembler supports .register.])])
2839 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2841 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2842 [Define if your assembler supports -relax option.])])
2844 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2845 gcc_cv_as_sparc_ua_pcrel,,
2853 .uaword %r_disp32(foo)],
2854 [if test x$gcc_cv_ld != x \
2855 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2856 gcc_cv_as_sparc_ua_pcrel=yes
2859 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2860 [Define if your assembler and linker support unaligned PC relative relocs.])
2862 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2863 gcc_cv_as_sparc_ua_pcrel_hidden,,
2868 .uaword %r_disp32(foo)
2869 .byte 0x32, 0x33, 0x34
2874 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2875 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2876 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2877 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2878 if $gcc_cv_objdump -R conftest 2> /dev/null \
2879 | grep 'DISP32' > /dev/null 2>&1; then
2882 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2886 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2887 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2888 ]) # unaligned pcrel relocs
2890 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2891 gcc_cv_as_sparc_offsetable_lo10,,
2894 or %g1, %lo(ab) + 12, %g1
2895 or %g1, %lo(ab + 12), %g1],
2896 [if test x$gcc_cv_objdump != x \
2897 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2898 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2899 gcc_cv_as_sparc_offsetable_lo10=yes
2901 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2902 [Define if your assembler supports offsetable %lo().])])
2906 i[34567]86-*-* | x86_64-*-*)
2909 cygwin* | pe | mingw32*)
2910 # Used for DWARF 2 in PE
2911 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2912 gcc_cv_as_ix86_pe_secrel32,
2918 [if test x$gcc_cv_ld != x \
2919 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2920 gcc_cv_as_ix86_pe_secrel32=yes
2923 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2924 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2928 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2929 gcc_cv_as_ix86_filds_fists,
2930 [2,9,0],, [filds mem; fists mem],,
2931 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2932 [Define if your assembler uses the new HImode fild and fist notation.])])
2934 gcc_GAS_CHECK_FEATURE([cmov syntax],
2935 gcc_cv_as_ix86_cmov_sun_syntax,,,
2936 [cmovl.l %edx, %eax],,
2937 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2938 [Define if your assembler supports the Sun syntax for cmov.])])
2940 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2941 gcc_cv_as_ix86_ffreep,,,
2943 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2944 [Define if your assembler supports the ffreep mnemonic.])])
2946 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2947 gcc_cv_as_ix86_sahf,,,
2949 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2950 [Define if your assembler supports the sahf mnemonic.])])
2952 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2953 gcc_cv_as_ix86_diff_sect_delta,,,
2961 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2962 [Define if your assembler supports the subtraction of symbols in different sections.])])
2964 # This one is used unconditionally by i386.[ch]; it is to be defined
2965 # to 1 if the feature is present, 0 otherwise.
2966 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2967 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2973 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2974 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2975 [Define true if the assembler supports '.long foo@GOTOFF'.])
2979 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2980 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2982 addl r15 = @ltoffx(x#), gp
2984 ld8.mov r16 = [[r15]], x#],,
2985 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2986 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2992 *-*-aix*) conftest_s=' .machine "pwr5"
2996 gcc_GAS_CHECK_FEATURE([.machine directive support],
2997 gcc_cv_as_machine_directive,,,
2998 [ .machine ppc7400])
2999 if test x$gcc_cv_as_machine_directive != xyes; then
3000 echo "*** This target requires an assembler supporting \".machine\"" >&2
3001 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3002 test x$build = x$target && exit 1
3006 *) conftest_s=' .machine power4
3011 gcc_GAS_CHECK_FEATURE([mfcr field support],
3012 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3014 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3015 [Define if your assembler supports mfcr field.])])
3018 *-*-aix*) conftest_s=' .machine "pwr5"
3021 *) conftest_s=' .machine power5
3026 gcc_GAS_CHECK_FEATURE([popcntb support],
3027 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3029 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3030 [Define if your assembler supports popcntb field.])])
3033 *-*-aix*) conftest_s=' .machine "pwr5x"
3036 *) conftest_s=' .machine power5
3041 gcc_GAS_CHECK_FEATURE([fp round support],
3042 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3044 [AC_DEFINE(HAVE_AS_FPRND, 1,
3045 [Define if your assembler supports fprnd.])])
3048 *-*-aix*) conftest_s=' .machine "pwr6"
3051 *) conftest_s=' .machine power6
3056 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3057 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3059 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3060 [Define if your assembler supports mffgpr and mftgpr.])])
3063 *-*-aix*) conftest_s=' .csect .text[[PR]]
3065 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3069 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3070 *) conftest_s=' .text
3072 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3075 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3076 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3078 [AC_DEFINE(HAVE_AS_REL16, 1,
3079 [Define if your assembler supports R_PPC_REL16 relocs.])])
3082 *-*-aix*) conftest_s=' .machine "pwr6"
3085 *) conftest_s=' .machine power6
3090 gcc_GAS_CHECK_FEATURE([compare bytes support],
3091 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3093 [AC_DEFINE(HAVE_AS_CMPB, 1,
3094 [Define if your assembler supports cmpb.])])
3097 *-*-aix*) conftest_s=' .machine "pwr6"
3100 *) conftest_s=' .machine power6
3105 gcc_GAS_CHECK_FEATURE([decimal float support],
3106 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3108 [AC_DEFINE(HAVE_AS_DFP, 1,
3109 [Define if your assembler supports DFP instructions.])])
3112 *-*-aix*) conftest_s=' .machine "pwr7"
3115 *) conftest_s=' .machine power7
3120 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3121 gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3123 [AC_DEFINE(HAVE_AS_VSX, 1,
3124 [Define if your assembler supports VSX instructions.])])
3126 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3127 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3128 [.gnu_attribute 4,1],,
3129 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3130 [Define if your assembler supports .gnu_attribute.])])
3132 gcc_GAS_CHECK_FEATURE([tls marker support],
3133 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3134 [ bl __tls_get_addr(x@tlsgd)],,
3135 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3136 [Define if your assembler supports arg info for __tls_get_addr.])])
3140 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3141 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3142 [ lw $4,%gp_rel(foo)($4)],,
3143 [if test x$target_cpu_default = x
3144 then target_cpu_default=MASK_EXPLICIT_RELOCS
3145 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3147 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3148 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3149 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3150 [Define if the assembler understands -mno-shared.])])
3152 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3153 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3154 [.gnu_attribute 4,1],,
3155 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3156 [Define if your assembler supports .gnu_attribute.])])
3158 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3159 gcc_cv_as_mips_dtprelword, [2,18,0],,
3160 [.section .tdata,"awT",@progbits
3164 .dtprelword x+0x8000],,
3165 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3166 [Define if your assembler supports .dtprelword.])])
3170 # Mips and HP-UX need the GNU assembler.
3171 # Linux on IA64 might be able to use the Intel assembler.
3174 mips*-*-* | *-*-hpux* )
3175 if test x$gas_flag = xyes \
3176 || test x"$host" != x"$build" \
3177 || test ! -x "$gcc_cv_as" \
3178 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3181 echo "*** This configuration requires the GNU assembler" >&2
3187 # ??? Not all targets support dwarf2 debug_line, even within a version
3188 # of gas. Moreover, we need to emit a valid instruction to trigger any
3189 # info to the output file. So, as supported targets are added to gas 2.11,
3190 # add some instruction here to (also) show we expect this might work.
3191 # ??? Once 2.11 is released, probably need to add first known working
3192 # version to the per-target configury.
3194 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3195 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3196 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3197 | spu-*-* | fido*-*-* | m32c-*-*)
3200 ia64*-*-* | s390*-*-*)
3207 if test x"$insn" != x; then
3209 .file 1 \"conftest.s\"
3212 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3213 gcc_cv_as_dwarf2_debug_line,
3214 [elf,2,11,0],, [$conftest_s],
3215 [if test x$gcc_cv_objdump != x \
3216 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3217 | grep debug_line > /dev/null 2>&1; then
3218 gcc_cv_as_dwarf2_debug_line=yes
3221 # The .debug_line file table must be in the exact order that
3222 # we specified the files, since these indices are also used
3223 # by DW_AT_decl_file. Approximate this test by testing if
3224 # the assembler bitches if the same index is assigned twice.
3225 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3226 gcc_cv_as_dwarf2_file_buggy,,,
3230 if test $gcc_cv_as_dwarf2_debug_line = yes \
3231 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3232 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3233 [Define if your assembler supports dwarf2 .file/.loc directives,
3234 and preserves file table indices exactly as given.])
3237 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3238 gcc_cv_as_gdwarf2_flag,
3239 [elf,2,11,0], [--gdwarf2], [$insn],,
3240 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3241 [Define if your assembler supports the --gdwarf2 option.])])
3243 gcc_GAS_CHECK_FEATURE([--gstabs option],
3244 gcc_cv_as_gstabs_flag,
3245 [elf,2,11,0], [--gstabs], [$insn],
3246 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3247 # and warns about it, but still exits successfully. So check for
3249 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3251 else gcc_cv_as_gstabs_flag=yes
3253 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3254 [Define if your assembler supports the --gstabs option.])])
3256 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3257 gcc_cv_as_debug_prefix_map_flag,
3258 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3259 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3260 [Define if your assembler supports the --debug-prefix-map option.])])
3263 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3266 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3267 [Define if your assembler supports .lcomm with an alignment field.])])
3269 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3270 [gcc_cv_as_line_zero],
3271 [gcc_cv_as_line_zero=no
3272 if test $in_tree_gas = yes; then
3273 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3274 elif test "x$gcc_cv_as" != x; then
3275 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3276 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3277 test "x`cat conftest.out`" = x
3279 gcc_cv_as_line_zero=yes
3281 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3282 cat conftest.s >&AS_MESSAGE_LOG_FD
3283 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3284 cat conftest.out >&AS_MESSAGE_LOG_FD
3286 rm -f conftest.o conftest.s conftest.out
3288 if test "x$gcc_cv_as_line_zero" = xyes; then
3289 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3290 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3293 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3294 gcc_cv_ld_eh_frame_hdr=no
3295 if test $in_tree_ld = yes ; then
3296 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3297 && test $in_tree_ld_is_elf = yes; then
3298 gcc_cv_ld_eh_frame_hdr=yes
3300 elif test x$gcc_cv_ld != x; then
3301 # Check if linker supports --eh-frame-hdr option
3302 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3303 gcc_cv_ld_eh_frame_hdr=yes
3306 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3307 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3308 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3309 [Define if your linker supports --eh-frame-hdr option.])
3311 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3313 AC_MSG_CHECKING(linker position independent executable support)
3315 if test $in_tree_ld = yes ; then
3316 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3317 && test $in_tree_ld_is_elf = yes; then
3320 elif test x$gcc_cv_ld != x; then
3321 # Check if linker supports -pie option
3322 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3326 if test x"$gcc_cv_ld_pie" = xyes; then
3327 AC_DEFINE(HAVE_LD_PIE, 1,
3328 [Define if your linker supports -pie option.])
3330 AC_MSG_RESULT($gcc_cv_ld_pie)
3332 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3333 gcc_cv_ld_eh_gc_sections=no
3334 if test $in_tree_ld = yes ; then
3335 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3336 && test $in_tree_ld_is_elf = yes; then
3337 gcc_cv_ld_eh_gc_sections=yes
3339 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3340 cat > conftest.s <<EOF
3343 .type _start, @function
3346 .size _start, .-_start
3347 .section .text.foo,"ax",@progbits
3348 .type foo, @function
3352 .section .gcc_except_table.foo,"a",@progbits
3355 .section .eh_frame,"a",@progbits
3358 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3359 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3360 | grep "gc-sections option ignored" > /dev/null; then
3361 gcc_cv_ld_eh_gc_sections=no
3362 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3363 gcc_cv_ld_eh_gc_sections=yes
3364 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3365 if test x$gcc_cv_as_comdat_group != xyes; then
3366 gcc_cv_ld_eh_gc_sections=no
3367 cat > conftest.s <<EOF
3370 .type _start, @function
3373 .size _start, .-_start
3374 .section .gnu.linkonce.t.foo,"ax",@progbits
3375 .type foo, @function
3379 .section .gcc_except_table.foo,"a",@progbits
3382 .section .eh_frame,"a",@progbits
3385 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3386 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3387 | grep "gc-sections option ignored" > /dev/null; then
3388 gcc_cv_ld_eh_gc_sections=no
3389 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3390 gcc_cv_ld_eh_gc_sections=yes
3396 rm -f conftest.s conftest.o conftest
3400 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3401 gcc_cv_ld_eh_gc_sections=no
3404 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3405 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3406 [Define if your linker supports garbage collection of
3407 sections in presence of EH frames.])
3409 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3415 AC_CACHE_CHECK(linker --as-needed support,
3416 gcc_cv_ld_as_needed,
3417 [gcc_cv_ld_as_needed=no
3418 if test $in_tree_ld = yes ; then
3419 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3420 && test $in_tree_ld_is_elf = yes; then
3421 gcc_cv_ld_as_needed=yes
3423 elif test x$gcc_cv_ld != x; then
3424 # Check if linker supports --as-needed and --no-as-needed options
3425 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3426 gcc_cv_ld_as_needed=yes
3430 if test x"$gcc_cv_ld_as_needed" = xyes; then
3431 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3432 [Define if your linker supports --as-needed and --no-as-needed options.])
3435 case "$target:$tm_file" in
3436 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3437 AC_CACHE_CHECK(linker support for omitting dot symbols,
3438 gcc_cv_ld_no_dot_syms,
3439 [gcc_cv_ld_no_dot_syms=no
3440 if test $in_tree_ld = yes ; then
3441 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3442 gcc_cv_ld_no_dot_syms=yes
3444 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3445 cat > conftest1.s <<EOF
3449 cat > conftest2.s <<EOF
3450 .section ".opd","aw"
3455 .quad .LEfoo,.TOC.@tocbase,0
3461 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3462 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3463 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3464 gcc_cv_ld_no_dot_syms=yes
3466 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3469 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3470 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3471 [Define if your PowerPC64 linker only needs function descriptor syms.])
3476 AC_CACHE_CHECK(linker --sysroot support,
3478 [gcc_cv_ld_sysroot=no
3479 if test $in_tree_ld = yes ; then
3480 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3481 gcc_cv_ld_sysroot=yes
3483 elif test x$gcc_cv_ld != x; then
3484 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3485 gcc_cv_ld_sysroot=yes
3488 if test x"$gcc_cv_ld_sysroot" = xyes; then
3489 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3490 [Define if your linker supports --sysroot.])
3493 if test x$with_sysroot = x && test x$host = x$target \
3494 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3495 && test "$prefix" != "NONE"; then
3496 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3497 [Define to PREFIX/include if cpp should also search that directory.])
3500 # Test for stack protector support in target C library.
3501 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3502 gcc_cv_libc_provides_ssp,
3503 [gcc_cv_libc_provides_ssp=no
3505 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3506 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3507 if test "x$with_sysroot" = x; then
3508 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3509 elif test "x$with_build_sysroot" != "x"; then
3510 glibc_header_dir="${with_build_sysroot}/usr/include"
3511 elif test "x$with_sysroot" = xyes; then
3512 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3514 glibc_header_dir="${with_sysroot}/usr/include"
3517 glibc_header_dir=/usr/include
3519 # glibc 2.4 and later provides __stack_chk_fail and
3520 # either __stack_chk_guard, or TLS access to stack guard canary.
3521 if test -f $glibc_header_dir/features.h \
3522 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3523 $glibc_header_dir/features.h > /dev/null; then
3524 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3525 $glibc_header_dir/features.h > /dev/null; then
3526 gcc_cv_libc_provides_ssp=yes
3527 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3528 $glibc_header_dir/features.h > /dev/null \
3529 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3530 $glibc_header_dir/features.h > /dev/null; then
3531 gcc_cv_libc_provides_ssp=yes
3532 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3533 $glibc_header_dir/features.h > /dev/null && \
3534 test -f $glibc_header_dir/bits/uClibc_config.h && \
3535 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3536 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3537 gcc_cv_libc_provides_ssp=yes
3542 # Avoid complicated tests (see
3543 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3544 # simply assert that glibc does provide this, which is true for all
3545 # realistically usable GNU/Hurd configurations.
3546 gcc_cv_libc_provides_ssp=yes;;
3548 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3549 [echo "no __stack_chk_fail on this target"])
3551 *) gcc_cv_libc_provides_ssp=no ;;
3554 if test x$gcc_cv_libc_provides_ssp = xyes; then
3555 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3556 [Define if your target C library provides stack protector support])
3559 # Check if TFmode long double should be used by default or not.
3560 # Some glibc targets used DFmode long double, but with glibc 2.4
3561 # and later they can use TFmode.
3563 powerpc*-*-linux* | \
3568 AC_ARG_WITH(long-double-128,
3569 [ --with-long-double-128 Use 128-bit long double by default.],
3570 gcc_cv_target_ldbl128="$with_long_double_128",
3571 [gcc_cv_target_ldbl128=no
3572 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3573 if test "x$with_sysroot" = x; then
3574 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3575 elif test "x$with_build_sysroot" != "x"; then
3576 glibc_header_dir="${with_build_sysroot}/usr/include"
3577 elif test "x$with_sysroot" = xyes; then
3578 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3580 glibc_header_dir="${with_sysroot}/usr/include"
3583 glibc_header_dir=/usr/include
3586 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3587 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3588 && gcc_cv_target_ldbl128=yes
3593 if test x$gcc_cv_target_ldbl128 = xyes; then
3594 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3595 [Define if TFmode long double should be the default])
3598 # Find out what GC implementation we want, or may, use.
3600 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3608 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3611 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3616 echo "Using $GGC for garbage collection."
3618 # Use the system's zlib library.
3620 zlibinc="-I\$(srcdir)/../zlib"
3621 AC_ARG_WITH(system-zlib,
3622 [ --with-system-zlib use installed libz],
3629 dnl Very limited version of automake's enable-maintainer-mode
3631 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3632 dnl maintainer-mode is disabled by default
3633 AC_ARG_ENABLE(maintainer-mode,
3634 [ --enable-maintainer-mode
3635 enable make rules and dependencies not useful
3636 (and sometimes confusing) to the casual installer],
3637 maintainer_mode=$enableval,
3640 AC_MSG_RESULT($maintainer_mode)
3642 if test "$maintainer_mode" = "yes"; then
3653 # Make empty files to contain the specs and options for each language.
3654 # Then add #include lines to for a compiler that has specs and/or options.
3660 # These (without "all_") are set in each config-lang.in.
3661 # `language' must be a single word so is spelled singularly.
3664 all_outputs='Makefile gccbug'
3665 # List of language makefile fragments.
3667 # List of language subdirectory makefiles. Deprecated.
3669 # Additional files for gengtype
3670 all_gtfiles="$target_gtfiles"
3672 # These are the languages that are set in --enable-languages,
3673 # and are available in the GCC tree.
3674 all_selected_languages=
3676 # Add the language fragments.
3677 # Languages are added via two mechanisms. Some information must be
3678 # recorded in makefile variables, these are defined in config-lang.in.
3679 # We accumulate them and plug them into the main Makefile.
3680 # The other mechanism is a set of hooks for each of the main targets
3681 # like `clean', `install', etc.
3683 language_hooks="Make-hooks"
3685 for lang in ${srcdir}/*/config-lang.in
3688 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3690 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3691 if test "x$lang_alias" = x
3693 echo "$lang doesn't set \$language." 1>&2
3696 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3697 subdirs="$subdirs $subdir"
3699 # $gcc_subdir is where the gcc integration files are to be found
3700 # for a language, both for internal compiler purposes (compiler
3701 # sources implementing front-end to GCC tree converters), and for
3702 # build infrastructure purposes (Make-lang.in, etc.)
3704 # This will be <subdir> (relative to $srcdir) if a line like
3705 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3706 # is found in <langdir>/config-lang.in, and will remain <langdir>
3709 # Except for the language alias (fetched above), the regular
3710 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3711 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3712 # only this and the language alias.
3714 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3715 if [ "$gcc_subdir" = "" ]; then
3716 gcc_subdir="$subdir"
3719 case ",$enable_languages," in
3721 all_selected_languages="$all_selected_languages $lang_alias"
3722 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3723 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3735 . ${srcdir}/$gcc_subdir/config-lang.in
3736 if test "x$language" = x
3738 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3743 case ",$enable_languages," in
3746 for i in $subdir_requires; do
3747 test -f "${srcdir}/$i/config-lang.in" && continue
3755 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3756 if test -f $srcdir/$gcc_subdir/lang.opt; then
3757 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3759 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3760 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3762 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3763 then all_lang_makefiles="$gcc_subdir/Makefile"
3765 all_languages="$all_languages $language"
3766 all_compilers="$all_compilers $compilers"
3767 all_outputs="$all_outputs $outputs"
3768 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3771 # Pick up gtfiles for c
3773 . ${srcdir}/c-config-lang.in
3774 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3777 for language in $all_selected_languages
3779 check_languages="$check_languages check-$language"
3782 # We link each language in with a set of hooks, reached indirectly via
3783 # lang.${target}. Only do so for selected languages.
3787 target_list="all.cross start.encap rest.encap tags \
3788 install-common install-man install-info install-pdf dvi pdf \
3789 html uninstall info man srcextra srcman srcinfo \
3790 mostlyclean clean distclean maintainer-clean"
3792 for t in $target_list
3795 for lang in $all_selected_languages
3799 echo "lang.$t: $x" >> Make-hooks
3808 echo "dir ." > .gdbinit
3809 echo "dir ${srcdir}" >> .gdbinit
3810 if test x$gdb_needs_out_file_path = xyes
3812 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3814 if test "x$subdirs" != x; then
3817 echo "dir ${srcdir}/$s" >> .gdbinit
3820 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3822 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3823 AC_SUBST(gcc_tooldir)
3826 # Find a directory in which to install a shared libgcc.
3828 AC_ARG_ENABLE(version-specific-runtime-libs,
3829 [ --enable-version-specific-runtime-libs
3830 specify that runtime libraries should be
3831 installed in a compiler-specific directory])
3833 AC_ARG_WITH(slibdir,
3834 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3835 slibdir="$with_slibdir",
3836 if test "${enable_version_specific_runtime_libs+set}" = set; then
3837 slibdir='$(libsubdir)'
3838 elif test "$host" != "$target"; then
3839 slibdir='$(build_tooldir)/lib'
3845 AC_ARG_WITH(datarootdir,
3846 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3847 datarootdir="\${prefix}/$with_datarootdir",
3848 datarootdir='$(prefix)/share')
3849 AC_SUBST(datarootdir)
3852 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3853 docdir="\${prefix}/$with_docdir",
3854 docdir='$(datarootdir)')
3857 AC_ARG_WITH(htmldir,
3858 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3859 htmldir="\${prefix}/$with_htmldir",
3860 htmldir='$(docdir)')
3863 # Substitute configuration variables
3866 AC_SUBST(all_compilers)
3867 AC_SUBST(all_gtfiles)
3868 AC_SUBST(all_lang_makefrags)
3869 AC_SUBST(all_lang_makefiles)
3870 AC_SUBST(all_languages)
3871 AC_SUBST(all_selected_languages)
3872 AC_SUBST(build_exeext)
3873 AC_SUBST(build_install_headers_dir)
3874 AC_SUBST(build_xm_file_list)
3875 AC_SUBST(build_xm_include_list)
3876 AC_SUBST(build_xm_defines)
3877 AC_SUBST(build_file_translate)
3878 AC_SUBST(check_languages)
3879 AC_SUBST(cpp_install_dir)
3880 AC_SUBST(xmake_file)
3881 AC_SUBST(tmake_file)
3882 AC_SUBST(extra_gcc_objs)
3883 AC_SUBST(extra_headers_list)
3884 AC_SUBST(extra_objs)
3885 AC_SUBST(extra_parts)
3886 AC_SUBST(extra_passes)
3887 AC_SUBST(extra_programs)
3888 AC_SUBST(float_h_file)
3889 AC_SUBST(gcc_config_arguments)
3890 AC_SUBST(gcc_gxx_include_dir)
3891 AC_SUBST(host_exeext)
3892 AC_SUBST(host_xm_file_list)
3893 AC_SUBST(host_xm_include_list)
3894 AC_SUBST(host_xm_defines)
3895 AC_SUBST(out_host_hook_obj)
3897 AC_SUBST(lang_opt_files)
3898 AC_SUBST(lang_specs_files)
3899 AC_SUBST(lang_tree_files)
3900 AC_SUBST(local_prefix)
3902 AC_SUBST(objc_boehm_gc)
3904 AC_SUBST(out_object_file)
3905 AC_SUBST(thread_file)
3906 AC_SUBST(tm_file_list)
3907 AC_SUBST(tm_include_list)
3908 AC_SUBST(tm_defines)
3909 AC_SUBST(tm_p_file_list)
3910 AC_SUBST(tm_p_include_list)
3911 AC_SUBST(xm_file_list)
3912 AC_SUBST(xm_include_list)
3913 AC_SUBST(xm_defines)
3914 AC_SUBST(use_gcc_stdint)
3915 AC_SUBST(c_target_objs)
3916 AC_SUBST(cxx_target_objs)
3917 AC_SUBST(fortran_target_objs)
3918 AC_SUBST(target_cpu_default)
3920 AC_SUBST_FILE(language_hooks)
3923 if test x${build} = x${host} ; then
3924 if test x${host} = x${target} ; then
3925 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3927 echo "Links are now set up to build a cross-compiler" 1>&2
3928 echo " from ${host} to ${target}." 1>&2
3931 if test x${host} = x${target} ; then
3932 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3933 echo " for ${target}." 1>&2
3935 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3936 echo " from ${host} to ${target}." 1>&2
3940 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3941 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3943 AC_ARG_VAR(PPLLIBS,[How to link PPL])
3944 AC_ARG_VAR(PPLINC,[How to find PPL include files])
3946 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
3947 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
3948 if test "x${CLOOGLIBS}" != "x" ; then
3949 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
3952 # Configure the subdirectories
3953 # AC_CONFIG_SUBDIRS($subdirs)
3955 # Create the Makefile
3956 # and configure language subdirectories
3957 AC_CONFIG_FILES($all_outputs)
3959 AC_CONFIG_COMMANDS([default],
3961 case ${CONFIG_HEADERS} in
3962 *auto-host.h:config.in*)
3965 # Make sure all the subdirs exist.
3966 for d in $subdirs doc build
3968 test -d $d || mkdir $d
3971 [subdirs='$subdirs'])