2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 ACX_PROG_GNAT([-I"$srcdir"/ada])
281 # autoconf is lame and doesn't give us any substitution variable for this.
282 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
283 NO_MINUS_C_MINUS_O=yes
285 OUTPUT_OPTION='-o $@'
287 AC_SUBST(NO_MINUS_C_MINUS_O)
288 AC_SUBST(OUTPUT_OPTION)
290 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
291 # optimizations to be activated explicitly by the toplevel.
294 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
306 # sizeof(char) is 1 by definition.
307 AC_CHECK_SIZEOF(void *)
308 AC_CHECK_SIZEOF(short)
310 AC_CHECK_SIZEOF(long)
311 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
312 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
314 # ---------------------
315 # Warnings and checking
316 # ---------------------
318 # Check $CC warning features (if it's GCC).
319 # We want to use -pedantic, but we don't want warnings about
323 # So, we only use -pedantic if we can disable those warnings.
325 ACX_PROG_CC_WARNING_OPTS(
326 [m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
327 [-Wmissing-prototypes -Wcast-qual])], [loose_warn])
328 ACX_PROG_CC_WARNING_OPTS(
329 [m4_do([-Wold-style-definition -Wc++-compat ],
330 [-Wmissing-format-attribute])], [strict_warn])
331 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
332 [m4_do([-Wno-long-long -Wno-variadic-macros ],
333 [-Wno-overlength-strings])], [strict_warn])
334 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
336 # The above macros do nothing if the compiler is not GCC. However, the
337 # Makefile has more goo to add other flags, so this variabl is used to
338 # enables warnings only for GCC.
340 if test "x$GCC" = "xyes"; then
341 warn_cflags='$(GCC_WARN_CFLAGS)'
343 AC_SUBST(warn_cflags)
345 # Enable expensive internal checks
347 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
351 AC_ARG_ENABLE(checking,
352 [ --enable-checking[=LIST]
353 enable expensive run-time checks. With LIST,
354 enable only specific categories of checks.
355 Categories are: yes,no,all,none,release.
356 Flags are: assert,df,fold,gc,gcac,gimple,misc,
357 rtlflag,rtl,runtime,tree,valgrind,types.],
358 [ac_checking_flags="${enableval}"],[
359 # Determine the default checks.
360 if test x$is_release = x ; then
361 ac_checking_flags=yes
363 ac_checking_flags=release
365 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
366 for check in release $ac_checking_flags
369 # these set all the flags to specific states
370 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
371 ac_fold_checking= ; ac_gc_checking=1 ;
372 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
373 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
374 ac_tree_checking=1 ; ac_valgrind_checking= ;
375 ac_types_checking=1 ;;
376 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
377 ac_fold_checking= ; ac_gc_checking= ;
378 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
379 ac_rtlflag_checking= ; ac_runtime_checking= ;
380 ac_tree_checking= ; ac_valgrind_checking= ;
381 ac_types_checking= ;;
382 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
383 ac_fold_checking=1 ; ac_gc_checking=1 ;
384 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
385 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
386 ac_tree_checking=1 ; ac_valgrind_checking= ;
387 ac_types_checking=1 ;;
388 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
389 ac_fold_checking= ; ac_gc_checking= ;
390 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
391 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
392 ac_tree_checking= ; ac_valgrind_checking= ;
393 ac_types_checking= ;;
394 # these enable particular checks
395 assert) ac_assert_checking=1 ;;
396 df) ac_df_checking=1 ;;
397 fold) ac_fold_checking=1 ;;
398 gc) ac_gc_checking=1 ;;
399 gcac) ac_gc_always_collect=1 ;;
400 gimple) ac_gimple_checking=1 ;;
401 misc) ac_checking=1 ;;
402 rtl) ac_rtl_checking=1 ;;
403 rtlflag) ac_rtlflag_checking=1 ;;
404 runtime) ac_runtime_checking=1 ;;
405 tree) ac_tree_checking=1 ;;
406 types) ac_types_checking=1 ;;
407 valgrind) ac_valgrind_checking=1 ;;
408 *) AC_MSG_ERROR(unknown check category $check) ;;
414 if test x$ac_checking != x ; then
415 AC_DEFINE(ENABLE_CHECKING, 1,
416 [Define if you want more run-time sanity checks. This one gets a grab
417 bag of miscellaneous but relatively cheap checks.])
418 nocommon_flag=-fno-common
420 AC_SUBST(nocommon_flag)
421 if test x$ac_df_checking != x ; then
422 AC_DEFINE(ENABLE_DF_CHECKING, 1,
423 [Define if you want more run-time sanity checks for dataflow.])
425 if test x$ac_assert_checking != x ; then
426 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
427 [Define if you want assertions enabled. This is a cheap check.])
429 if test x$ac_gimple_checking != x ; then
430 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
431 [Define if you want operations on GIMPLE (the basic data structure of
432 the high-level optimizers) to be checked for dynamic type safety at
433 runtime. This is moderately expensive.])
435 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
436 if test x$ac_runtime_checking != x ; then
437 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
438 [Define if you want runtime assertions enabled. This is a cheap check.])
440 if test x$ac_tree_checking != x ; then
441 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
442 [Define if you want all operations on trees (the basic data
443 structure of the front ends) to be checked for dynamic type safety
444 at runtime. This is moderately expensive. The tree browser debugging
445 routines will also be enabled by this option.
447 TREEBROWSER=tree-browser.o
449 if test x$ac_types_checking != x ; then
450 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
451 [Define if you want all gimple types to be verified after gimplifiation.
455 AC_SUBST(TREEBROWSER)
456 if test x$ac_rtl_checking != x ; then
457 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
458 [Define if you want all operations on RTL (the basic data structure
459 of the optimizer and back end) to be checked for dynamic type safety
460 at runtime. This is quite expensive.])
462 if test x$ac_rtlflag_checking != x ; then
463 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
464 [Define if you want RTL flag accesses to be checked against the RTL
465 codes that are supported for each access macro. This is relatively
468 if test x$ac_gc_checking != x ; then
469 AC_DEFINE(ENABLE_GC_CHECKING, 1,
470 [Define if you want the garbage collector to do object poisoning and
471 other memory allocation checks. This is quite expensive.])
473 if test x$ac_gc_always_collect != x ; then
474 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
475 [Define if you want the garbage collector to operate in maximally
476 paranoid mode, validating the entire heap and collecting garbage at
477 every opportunity. This is extremely expensive.])
479 if test x$ac_fold_checking != x ; then
480 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
481 [Define if you want fold checked that it never destructs its argument.
482 This is quite expensive.])
484 valgrind_path_defines=
487 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
488 dnl # an if statement. This was the source of very frustrating bugs
489 dnl # in converting to autoconf 2.5x!
490 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
492 if test x$ac_valgrind_checking != x ; then
493 # It is certainly possible that there's valgrind but no valgrind.h.
494 # GCC relies on making annotations so we must have both.
495 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
496 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
497 [[#include <valgrind/memcheck.h>
498 #ifndef VALGRIND_DISCARD
499 #error VALGRIND_DISCARD not defined
501 [gcc_cv_header_valgrind_memcheck_h=yes],
502 [gcc_cv_header_valgrind_memcheck_h=no])
503 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
504 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
505 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
506 [[#include <memcheck.h>
507 #ifndef VALGRIND_DISCARD
508 #error VALGRIND_DISCARD not defined
510 [gcc_cv_header_memcheck_h=yes],
511 [gcc_cv_header_memcheck_h=no])
512 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
513 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
514 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
515 if test "x$valgrind_path" = "x" \
516 || (test $have_valgrind_h = no \
517 && test $gcc_cv_header_memcheck_h = no \
518 && test $gcc_cv_header_valgrind_memcheck_h = no); then
519 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
521 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
522 valgrind_command="$valgrind_path -q"
523 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
524 [Define if you want to run subprograms and generated programs
525 through valgrind (a memory checker). This is extremely expensive.])
526 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
527 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
528 [Define if valgrind's valgrind/memcheck.h header is installed.])
530 if test $gcc_cv_header_memcheck_h = yes; then
531 AC_DEFINE(HAVE_MEMCHECK_H, 1,
532 [Define if valgrind's memcheck.h header is installed.])
535 AC_SUBST(valgrind_path_defines)
536 AC_SUBST(valgrind_command)
538 # Enable code coverage collection
539 AC_ARG_ENABLE(coverage,
540 [ --enable-coverage[=LEVEL]
541 enable compiler's code coverage collection.
542 Use to measure compiler performance and locate
543 unused parts of the compiler. With LEVEL, specify
544 optimization. Values are opt, noopt,
546 [case "${enableval}" in
548 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
551 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
554 # a.k.a. --disable-coverage
558 AC_MSG_ERROR(unknown coverage setting $enableval)
562 AC_SUBST(coverage_flags)
564 AC_ARG_ENABLE(gather-detailed-mem-stats,
565 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
566 [enable_gather_detailed_mem_stats=no])
567 if test x$enable_gather_detailed_mem_stats = xyes ; then
568 AC_DEFINE(GATHER_STATISTICS, 1,
569 [Define to enable detailed memory allocation stats gathering.])
572 # -------------------------------
573 # Miscenalleous configure options
574 # -------------------------------
578 [ --with-stabs arrange to use stabs instead of host debug format],
582 # Determine whether or not multilibs are enabled.
583 AC_ARG_ENABLE(multilib,
584 [ --enable-multilib enable library support for multiple ABIs],
585 [], [enable_multilib=yes])
586 AC_SUBST(enable_multilib)
588 # Enable __cxa_atexit for C++.
589 AC_ARG_ENABLE(__cxa_atexit,
590 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
593 # Enable C extension for decimal float if target supports it.
594 AC_ARG_ENABLE(decimal-float,
595 [ --enable-decimal-float={no,yes,bid,dpd}
596 enable decimal float extension to C. Selecting 'bid'
597 or 'dpd' choses which decimal floating point format
600 case $enable_decimal_float in
601 yes | no | bid | dpd) ;;
602 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
603 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
608 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
609 enable_decimal_float=yes
612 AC_MSG_WARN(decimal float is not supported for this target, ignored)
613 enable_decimal_float=no
618 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
620 [Define to 1 to enable decimal float extension to C.])
622 # x86's use BID format instead of DPD
623 case x$enable_decimal_float in
626 i?86*-*-linux* | x86_64*-*-linux*)
627 enable_decimal_float=bid
630 enable_decimal_float=dpd
635 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
636 # dependency on libdecnumber.
637 enable_decimal_float=dpd
640 AC_SUBST(enable_decimal_float)
642 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
643 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
644 [Define to 1 to specify that we are using the BID decimal floating
645 point format instead of DPD])
647 # Enable C extension for fixed-point arithmetic.
648 AC_ARG_ENABLE(fixed-point,
649 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
657 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
658 enable_fixed_point=no
661 enable_fixed_point=yes
666 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
667 enable_fixed_point=no
671 AC_SUBST(enable_fixed_point)
673 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
674 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
675 [Define to 1 to enable fixed-point arithmetic extension to C.])
678 # Pass with no value to take the default
679 # Pass with a value to specify a thread package
680 AC_ARG_ENABLE(threads,
681 [ --enable-threads enable thread usage for target GCC
682 --enable-threads=LIB use LIB thread package for target GCC],,
686 [ --enable-tls enable or disable generation of tls code
687 overriding the assembler check for tls support],
691 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
692 Valid choices are 'yes' and 'no'.]) ;;
696 AC_ARG_ENABLE(objc-gc,
697 [ --enable-objc-gc enable the use of Boehm's garbage collector with
698 the GNU Objective-C runtime],
699 if test x$enable_objc_gc = xno; then
707 [ --with-dwarf2 force the default debug format to be DWARF 2],
708 dwarf2="$with_dwarf2",
711 AC_ARG_ENABLE(shared,
712 [ --disable-shared don't provide a shared libgcc],
714 case $enable_shared in
718 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
719 for pkg in $enableval; do
720 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
727 ], [enable_shared=yes])
728 AC_SUBST(enable_shared)
730 AC_ARG_WITH(build-sysroot,
731 [ --with-build-sysroot=sysroot
732 use sysroot as the system root during the build])
735 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
737 case ${with_sysroot} in
738 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
739 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
742 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
743 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
745 if test "x$prefix" = xNONE; then
746 test_prefix=/usr/local
750 if test "x$exec_prefix" = xNONE; then
751 test_exec_prefix=$test_prefix
753 test_exec_prefix=$exec_prefix
755 case ${TARGET_SYSTEM_ROOT} in
756 "${test_prefix}"|"${test_prefix}/"*|\
757 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
758 '${prefix}'|'${prefix}/'*|\
759 '${exec_prefix}'|'${exec_prefix}/'*)
760 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
761 TARGET_SYSTEM_ROOT_DEFINE="$t"
766 TARGET_SYSTEM_ROOT_DEFINE=
767 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
769 AC_SUBST(TARGET_SYSTEM_ROOT)
770 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
771 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
773 # Build with intermodule optimisations
774 AC_ARG_ENABLE(intermodule,
775 [ --enable-intermodule build the compiler in one step],
776 [case ${enable_intermodule} in
777 yes) onestep="-onestep";;
783 ACX_PKGVERSION([GCC])
784 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
786 # Sanity check enable_languages in case someone does not run the toplevel
787 # configure # script.
788 AC_ARG_ENABLE(languages,
789 [ --enable-languages=LIST specify which front-ends to build],
790 [case ,${enable_languages}, in
792 # go safe -- we cannot be much sure without the toplevel
794 # analysis of which target libs are present and usable
798 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
803 enable_languages=c,${enable_languages}
806 [enable_languages=c])
808 # Used by documentation targets
809 AC_SUBST(datarootdir)
813 # -------------------------
814 # Checks for other programs
815 # -------------------------
819 # Find some useful tools
821 # We need awk to create options.c and options.h.
822 # Bail out if it's missing.
824 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
832 # By default, the Darwin ranlib will not treat common symbols as
833 # definitions when building the archive table of contents. Other
834 # ranlibs do that; pass an option to the Darwin ranlib that makes
835 # it behave similarly.
841 AC_SUBST(ranlib_flags)
845 # See if cmp has --ignore-initial.
846 gcc_AC_PROG_CMP_IGNORE_INITIAL
848 # See if we have the mktemp command.
849 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
851 # See if makeinfo has been installed and is modern enough
852 # that we can use it.
853 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
854 [GNU texinfo.* \([0-9][0-9.]*\)],
855 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
856 if test $gcc_cv_prog_makeinfo_modern = no; then
858 *** Makeinfo is missing or too old.
859 *** Info documentation will not be built.])
866 # Is pod2man recent enough to regenerate manpages?
867 AC_MSG_CHECKING([for recent Pod::Man])
868 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
870 GENERATED_MANPAGES=generated-manpages
875 AC_SUBST(GENERATED_MANPAGES)
877 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
880 dnl Don't use AC_PROG_LEX; we insist on flex.
881 dnl LEXLIB is not useful in gcc.
882 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
885 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
887 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
888 # check for build == host before using them.
891 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
892 && test -d ../binutils ; then
893 NM='$(objdir)/../binutils/nm-new'
895 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
899 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
900 && test -d ../binutils ; then
901 AR='$(objdir)/../binutils/ar'
903 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
907 # --------------------
908 # Checks for C headers
909 # --------------------
911 # Need to reject headers which give warnings, so that the -Werror bootstrap
912 # works later. *sigh* This needs to come before all header checks.
919 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
920 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
921 sys/resource.h sys/param.h sys/times.h sys/stat.h \
922 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
924 # Check for thread headers.
925 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
926 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
928 # These tests can't be done till we know if we have limits.h.
937 # These libraries may be used by collect2.
938 # We may need a special search path to get them linked.
939 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
941 for libs in '' -lld -lmld \
942 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
943 '-L/usr/lib/cmplrs/cc3.11 -lmld'
946 AC_TRY_LINK_FUNC(ldopen,
947 [gcc_cv_collect2_libs="$libs"; break])
950 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
951 case $gcc_cv_collect2_libs in
953 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
955 AC_SUBST(COLLECT2_LIBS)
957 # When building Ada code on Alpha, we need exc_resume which is usually in
958 # -lexc. So test for it.
961 AC_SEARCH_LIBS(exc_resume, exc)
964 AC_SUBST(GNAT_LIBEXC)
966 # Some systems put ldexp and frexp in libm instead of libc; assume
967 # they're both in the same place. jcf-dump needs them.
970 AC_SEARCH_LIBS(ldexp, m)
975 # Use <inttypes.h> only if it exists,
976 # doesn't clash with <sys/types.h>, and declares intmax_t.
977 AC_MSG_CHECKING(for inttypes.h)
978 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
979 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
980 [[#include <sys/types.h>
981 #include <inttypes.h>]],
982 [[intmax_t i = -1;]])],
983 [gcc_cv_header_inttypes_h=yes],
984 [gcc_cv_header_inttypes_h=no])])
985 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
986 if test $gcc_cv_header_inttypes_h = yes; then
987 AC_DEFINE(HAVE_INTTYPES_H, 1,
988 [Define if you have a working <inttypes.h> header file.])
991 dnl Disabled until we have a complete test for buggy enum bitfields.
992 dnl gcc_AC_C_ENUM_BF_UNSIGNED
994 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
995 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
996 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
997 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
998 putchar_unlocked putc_unlocked)
999 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1000 sysconf strsignal getrusage nl_langinfo \
1001 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1004 if test x$ac_cv_func_mbstowcs = xyes; then
1005 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1006 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1012 [gcc_cv_func_mbstowcs_works=yes],
1013 [gcc_cv_func_mbstowcs_works=no],
1014 [gcc_cv_func_mbstowcs_works=yes])])
1015 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1016 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1017 [Define this macro if mbstowcs does not crash when its
1018 first argument is NULL.])
1022 AC_CHECK_TYPE(ssize_t, int)
1023 AC_CHECK_TYPE(caddr_t, char *)
1025 # Try to determine the array type of the second argument of getgroups
1026 # for the target system (int or gid_t).
1028 if test "${target}" = "${build}"; then
1029 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1032 # This condition may need some tweaking. It should include all
1033 # targets where the array type of the second argument of getgroups
1034 # is int and the type of gid_t is not equivalent to int.
1035 *-*-sunos* | *-*-ultrix*)
1036 TARGET_GETGROUPS_T=int
1039 TARGET_GETGROUPS_T=gid_t
1043 AC_SUBST(TARGET_GETGROUPS_T)
1045 gcc_AC_FUNC_MMAP_BLACKLIST
1049 # Under VMS, vfork works very differently than on Unix. The standard test
1050 # won't work, and it isn't easily adaptable. It makes more sense to
1052 ac_cv_func_vfork_works=yes
1058 # Until we have in-tree GNU iconv:
1060 AC_SUBST(LIBICONV_DEP)
1066 # We will need to find libiberty.h and ansidecl.h
1067 saved_CFLAGS="$CFLAGS"
1068 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1069 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1070 strsignal strstr strverscmp \
1071 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1072 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1073 #include "ansidecl.h"
1074 #include "system.h"])
1076 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1077 #include "ansidecl.h"
1079 #ifdef HAVE_SYS_RESOURCE_H
1080 #include <sys/resource.h>
1084 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_RESOURCE_H
1088 #include <sys/resource.h>
1090 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1091 [Define to `long' if <sys/resource.h> doesn't define.])])
1093 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1094 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1095 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1096 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1097 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1098 #include "ansidecl.h"
1107 gcc_AC_CHECK_DECLS(times, , ,[
1108 #include "ansidecl.h"
1110 #ifdef HAVE_SYS_TIMES_H
1111 #include <sys/times.h>
1115 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1116 #include "ansidecl.h"
1121 # More time-related stuff.
1122 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1123 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1124 #include "ansidecl.h"
1126 #ifdef HAVE_SYS_TIMES_H
1127 #include <sys/times.h>
1129 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1130 if test $ac_cv_struct_tms = yes; then
1131 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1132 [Define if <sys/times.h> defines struct tms.])
1135 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1136 # revisit after autoconf 2.50.
1137 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1138 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1139 #include "ansidecl.h"
1141 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1142 if test $gcc_cv_type_clock_t = yes; then
1143 AC_DEFINE(HAVE_CLOCK_T, 1,
1144 [Define if <time.h> defines clock_t.])
1147 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1148 CFLAGS="$saved_CFLAGS"
1150 gcc_AC_INITFINI_ARRAY
1152 # mkdir takes a single argument on some systems.
1153 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1161 # With Setjmp/Longjmp based exception handling.
1162 AC_ARG_ENABLE(sjlj-exceptions,
1163 [ --enable-sjlj-exceptions
1164 arrange to use setjmp/longjmp exception handling],
1167 if test $enableval != yes; then
1168 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1173 force_sjlj_exceptions=yes],
1176 force_sjlj_exceptions=yes
1180 force_sjlj_exceptions=no
1183 if test $force_sjlj_exceptions = yes; then
1184 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1185 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1186 [Define 0/1 to force the choice for exception handling model.])
1189 # For platforms with the unwind ABI which includes an unwind library,
1190 # libunwind, we can choose to use the system libunwind.
1191 AC_ARG_WITH(system-libunwind,
1192 [ --with-system-libunwind use installed libunwind])
1194 # config.gcc also contains tests of with_system_libunwind.
1195 if test x$with_system_libunwind = xyes; then
1196 AC_DEFINE(HAVE_GETIPINFO, 1,
1197 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1200 # --------------------------------------------------------
1201 # Build, host, and target specific configuration fragments
1202 # --------------------------------------------------------
1204 # Collect build-machine-specific information.
1205 . ${srcdir}/config.build
1207 # Collect host-machine-specific information.
1208 . ${srcdir}/config.host
1212 # Collect target-machine-specific information.
1213 . ${srcdir}/config.gcc
1215 extra_objs="${host_extra_objs} ${extra_objs}"
1216 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1218 # Default the target-machine variables that were not explicitly set.
1219 if test x"$tm_file" = x
1220 then tm_file=$cpu_type/$cpu_type.h; fi
1222 if test x"$extra_headers" = x
1223 then extra_headers=; fi
1225 if test x$md_file = x
1226 then md_file=$cpu_type/$cpu_type.md; fi
1228 if test x$out_file = x
1229 then out_file=$cpu_type/$cpu_type.c; fi
1231 if test x"$tmake_file" = x
1232 then tmake_file=$cpu_type/t-$cpu_type
1235 if test x"$dwarf2" = xyes
1236 then tm_file="$tm_file tm-dwarf2.h"
1239 # Say what files are being used for the output code and MD file.
1240 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1241 echo "Using \`$srcdir/config/$md_file' as machine description file."
1243 # If any of the xm_file variables contain nonexistent files, warn
1244 # about them and drop them.
1247 for x in $build_xm_file; do
1248 if test -f $srcdir/config/$x
1250 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1256 for x in $host_xm_file; do
1257 if test -f $srcdir/config/$x
1259 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1265 for x in $xm_file; do
1266 if test -f $srcdir/config/$x
1268 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1274 for f in $tm_file; do
1277 if test $count = ax; then
1278 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1280 echo "Using the following target machine macro files:"
1281 for f in $tm_file; do
1282 echo " $srcdir/config/$f"
1286 if test x$need_64bit_hwint = xyes; then
1287 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1288 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1291 if test x$use_long_long_for_widest_fast_int = xyes; then
1292 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1293 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1294 efficiently supported by the host hardware.])
1298 for f in $host_xm_file; do
1301 if test $count = a; then
1303 elif test $count = ax; then
1304 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1306 echo "Using the following host machine macro files:"
1307 for f in $host_xm_file; do
1308 echo " $srcdir/config/$f"
1311 echo "Using ${out_host_hook_obj} for host machine hooks."
1313 if test "$host_xm_file" != "$build_xm_file"; then
1315 for f in $build_xm_file; do
1318 if test $count = a; then
1320 elif test $count = ax; then
1321 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1323 echo "Using the following build machine macro files:"
1324 for f in $build_xm_file; do
1325 echo " $srcdir/config/$f"
1332 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1333 gcc_cv_mcontext_underscores,
1335 #include <sys/cdefs.h>
1336 #include <sys/signal.h>
1337 #include <ucontext.h>
1338 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1340 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1341 if test $gcc_cv_mcontext_underscores = yes; then
1342 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1343 [mcontext_t fields start with __])
1352 # Check if a valid thread package
1353 case ${enable_threads} in
1356 target_thread_file='single'
1360 target_thread_file='single'
1362 aix | dce | gnat | irix | posix | posix95 | rtems | \
1363 single | solaris | vxworks | win32 | mipssde)
1364 target_thread_file=${enable_threads}
1367 echo "${enable_threads} is an unknown thread package" 1>&2
1372 if test x${thread_file} = x; then
1373 # No thread file set by target-specific clauses in config.gcc,
1374 # so use file chosen by default logic above
1375 thread_file=${target_thread_file}
1378 # Make gthr-default.h if we have a thread file.
1380 if test $thread_file != single; then
1381 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1382 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1383 rm -f gthr-default.h-t
1385 mv -f gthr-default.h-t gthr-default.h
1387 gthread_flags=-DHAVE_GTHR_DEFAULT
1389 AC_SUBST(gthread_flags)
1396 if test x$enable___cxa_atexit = xyes || \
1397 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1398 if test x$host = x$target; then
1400 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1401 # keyed to flag_use_cxa_atexit
1406 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1407 [echo "__cxa_atexit can't be enabled on this target"])
1411 # We can't check for __cxa_atexit when building a cross, so assume
1415 if test x$use_cxa_atexit = xyes; then
1416 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1417 [Define if you want to use __cxa_atexit, rather than atexit, to
1418 register C++ destructors for local statics and global objects.
1419 This is essential for fully standards-compliant handling of
1420 destructors, but requires __cxa_atexit in libc.])
1425 if test x$with_system_libunwind = xyes; then
1426 if test x$host = x$target; then
1427 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1430 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1431 if test x$use_getipinfo = xyes; then
1432 AC_DEFINE(HAVE_GETIPINFO, 1,
1433 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1435 echo "The system unwind library does not support _Unwind_GetIPInfo."
1438 # Look for a file containing extra machine modes.
1439 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1440 extra_modes_file='$(srcdir)'/config/${extra_modes}
1441 AC_SUBST(extra_modes_file)
1442 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1443 [Define to the name of a file containing a list of extra machine modes
1444 for this architecture.])
1447 # Convert extra_options into a form suitable for Makefile use.
1449 for f in $extra_options; do
1450 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1452 AC_SUBST(extra_opt_files)
1454 # auto-host.h is the file containing items generated by autoconf and is
1455 # the first file included by config.h.
1456 # If host=build, it is correct to have bconfig include auto-host.h
1457 # as well. If host!=build, we are in error and need to do more
1458 # work to find out the build config parameters.
1459 if test x$host = x$build
1461 build_auto=auto-host.h
1463 # We create a subdir, then run autoconf in the subdir.
1464 # To prevent recursion we set host and build for the new
1465 # invocation of configure to the build for this invocation
1472 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1473 *) realsrcdir=../${srcdir};;
1475 saved_CFLAGS="${CFLAGS}"
1476 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1477 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1478 ${realsrcdir}/configure \
1479 --enable-languages=${enable_languages-all} \
1480 --target=$target_alias --host=$build_alias --build=$build_alias
1481 CFLAGS="${saved_CFLAGS}"
1483 # We just finished tests for the build machine, so rename
1484 # the file auto-build.h in the gcc directory.
1485 mv auto-host.h ../auto-build.h
1488 build_auto=auto-build.h
1490 AC_SUBST(build_subdir)
1492 tm_file="${tm_file} defaults.h"
1493 tm_p_file="${tm_p_file} tm-preds.h"
1494 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1495 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1496 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1497 # put this back in temporarily.
1498 xm_file="auto-host.h ansidecl.h ${xm_file}"
1505 # Compile in configure arguments.
1506 if test -f configargs.h ; then
1507 # Being re-configured.
1508 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1509 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1511 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1514 # Double all backslashes and backslash all quotes to turn
1515 # gcc_config_arguments into a C string.
1516 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1517 $gcc_config_arguments
1519 gcc_config_arguments_str=`cat conftest.out`
1522 cat > configargs.h <<EOF
1523 /* Generated automatically. */
1524 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1525 static const char thread_model[] = "$thread_file";
1527 static const struct {
1528 const char *name, *value;
1529 } configure_default_options[] = $configure_default_options;
1533 # Internationalization
1534 ZW_GNU_GETTEXT_SISTER_DIR
1536 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1537 # -liconv on the link line twice.
1538 case "$LIBINTL" in *$LIBICONV*)
1542 AC_ARG_ENABLE(secureplt,
1543 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1547 [ --enable-cld enable -mcld by default for 32bit x86], [],
1550 # Windows32 Registry support for specifying GCC installation paths.
1551 AC_ARG_ENABLE(win32-registry,
1552 [ --disable-win32-registry
1553 disable lookup of installation paths in the
1554 Registry on Windows hosts
1555 --enable-win32-registry enable registry lookup (default)
1556 --enable-win32-registry=KEY
1557 use KEY instead of GCC version as the last portion
1558 of the registry key],,)
1561 win32 | pe | cygwin* | mingw32* | uwin*)
1562 if test "x$enable_win32_registry" != xno; then
1563 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1566 if test "x$enable_win32_registry" != xno; then
1567 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1568 [Define to 1 if installation paths should be looked up in the Windows
1569 Registry. Ignored on non-Windows hosts.])
1571 if test "x$enable_win32_registry" != xyes \
1572 && test "x$enable_win32_registry" != x; then
1573 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1574 [Define to be the last component of the Windows registry key under which
1575 to look for installation paths. The full key used will be
1576 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1577 The default is the GCC version number.])
1583 # Get an absolute path to the GCC top-level source directory
1584 holddir=`${PWDCMD-pwd}`
1586 topdir=`${PWDCMD-pwd}`
1589 # Conditionalize the makefile for this host machine.
1591 for f in ${host_xmake_file}
1593 if test -f ${srcdir}/config/$f
1595 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1599 # Conditionalize the makefile for this target machine.
1601 for f in ${tmake_file}
1603 if test -f ${srcdir}/config/$f
1605 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1608 tmake_file="${tmake_file_}"
1610 # This is a terrible hack which will go away some day.
1611 host_cc_for_libada=${CC}
1612 AC_SUBST(host_cc_for_libada)
1614 out_object_file=`basename $out_file .c`.o
1616 tm_file_list="options.h"
1617 tm_include_list="options.h"
1618 for f in $tm_file; do
1621 f=`echo $f | sed 's/^..//'`
1622 tm_file_list="${tm_file_list} $f"
1623 tm_include_list="${tm_include_list} $f"
1626 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1627 tm_include_list="${tm_include_list} $f"
1630 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1631 tm_include_list="${tm_include_list} config/$f"
1638 for f in $tm_p_file; do
1641 tm_p_file_list="${tm_p_file_list} $f"
1642 tm_p_include_list="${tm_p_include_list} $f"
1645 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1646 tm_p_include_list="${tm_p_include_list} config/$f"
1652 for f in $xm_file; do
1655 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1656 xm_include_list="${xm_include_list} $f"
1659 xm_file_list="${xm_file_list} $f"
1660 xm_include_list="${xm_include_list} $f"
1663 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1664 xm_include_list="${xm_include_list} config/$f"
1670 host_xm_include_list=
1671 for f in $host_xm_file; do
1674 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1675 host_xm_include_list="${host_xm_include_list} $f"
1678 host_xm_file_list="${host_xm_file_list} $f"
1679 host_xm_include_list="${host_xm_include_list} $f"
1682 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1683 host_xm_include_list="${host_xm_include_list} config/$f"
1689 for f in $build_xm_file; do
1692 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1693 build_xm_include_list="${build_xm_include_list} $f"
1695 auto-build.h | auto-host.h )
1696 build_xm_file_list="${build_xm_file_list} $f"
1697 build_xm_include_list="${build_xm_include_list} $f"
1700 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1701 build_xm_include_list="${build_xm_include_list} config/$f"
1706 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1707 # cross-compiler which does not use the native headers and libraries.
1708 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1709 CROSS= AC_SUBST(CROSS)
1710 ALL=all.internal AC_SUBST(ALL)
1711 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1713 if test "x$with_build_sysroot" != x; then
1714 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1716 # This value is used, even on a native system, because
1717 # CROSS_SYSTEM_HEADER_DIR is just
1718 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1719 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1722 if test x$host != x$target
1724 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1726 SYSTEM_HEADER_DIR=$build_system_header_dir
1727 case "$host","$target" in
1728 # Darwin crosses can use the host system's libraries and headers,
1729 # because of the fat library support. Of course, it must be the
1730 # same version of Darwin on both sides. Allow the user to
1731 # just say --target=foo-darwin without a version number to mean
1732 # "the version on this system".
1733 *-*-darwin*,*-*-darwin*)
1734 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1735 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1736 if test $hostos = $targetos -o $targetos = darwin ; then
1738 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1743 i?86-*-*,x86_64-*-* \
1744 | powerpc*-*-*,powerpc64*-*-*)
1745 CROSS="$CROSS -DNATIVE_CROSS" ;;
1747 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1748 SYSTEM_HEADER_DIR=$build_system_header_dir
1751 # If this is a cross-compiler that does not
1752 # have its own set of headers then define
1755 # If this is using newlib, without having the headers available now,
1756 # then define inhibit_libc in LIBGCC2_CFLAGS.
1757 # This prevents libgcc2 from containing any code which requires libc
1759 : ${inhibit_libc=false}
1760 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1761 test x$with_newlib = xyes ; } &&
1762 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1765 AC_SUBST(inhibit_libc)
1767 # When building gcc with a cross-compiler, we need to adjust things so
1768 # that the generator programs are still built with the native compiler.
1769 # Also, we cannot run fixincludes or fix-header.
1771 # These are the normal (build=host) settings:
1772 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1773 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1774 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1775 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1777 # Possibly disable fixproto, on a per-target basis.
1778 case ${use_fixproto} in
1783 STMP_FIXPROTO=stmp-fixproto
1786 AC_SUBST(STMP_FIXPROTO)
1788 # And these apply if build != host, or we are generating coverage data
1789 if test x$build != x$host || test "x$coverage_flags" != x
1791 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1792 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1794 if test "x$TARGET_SYSTEM_ROOT" = x; then
1795 if test "x$STMP_FIXPROTO" != x; then
1796 STMP_FIXPROTO=stmp-install-fixproto
1801 # Expand extra_headers to include complete path.
1802 # This substitutes for lots of t-* files.
1804 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1805 for file in ${extra_headers} ; do
1806 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1809 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1810 if test x"$use_gcc_tgmath" = xyes
1811 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1814 # Define collect2 in Makefile.
1815 case $host_can_use_collect2 in
1817 *) collect2='collect2$(exeext)' ;;
1819 AC_SUBST([collect2])
1821 # Add a definition of USE_COLLECT2 if system wants one.
1822 case $use_collect2 in
1823 no) use_collect2= ;;
1826 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1827 xm_defines="${xm_defines} USE_COLLECT2"
1828 case $host_can_use_collect2 in
1830 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1836 # ---------------------------
1837 # Assembler & linker features
1838 # ---------------------------
1840 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1841 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1842 # However when ld-new is first executed from the build tree, libtool will
1843 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1844 # to the build tree. While doing this we need to use the previous-stage
1845 # linker, or we have an infinite loop. The presence of a shell script as
1846 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1847 # the gcc/collect-ld script. So we need to know how libtool works, or
1848 # exec-tool will fail.
1850 m4_defun([_LT_CONFIG_COMMANDS], [])
1853 AC_SUBST(enable_fast_install)
1855 # Identify the assembler which will work hand-in-glove with the newly
1856 # built GCC, so that we can examine its features. This is the assembler
1857 # which will be driven by the driver program.
1859 # If build != host, and we aren't building gas in-tree, we identify a
1860 # build->target assembler and hope that it will have the same features
1861 # as the host->target assembler we'll be using.
1862 gcc_cv_gas_major_version=
1863 gcc_cv_gas_minor_version=
1864 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1866 m4_pattern_allow([AS_FOR_TARGET])dnl
1867 AS_VAR_SET_IF(gcc_cv_as,, [
1868 if test -x "$DEFAULT_ASSEMBLER"; then
1869 gcc_cv_as="$DEFAULT_ASSEMBLER"
1870 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1871 && test -f ../gas/Makefile \
1872 && test x$build = x$host; then
1873 gcc_cv_as=../gas/as-new$build_exeext
1874 elif test -x as$build_exeext; then
1875 # Build using assembler in the current directory.
1876 gcc_cv_as=./as$build_exeext
1877 elif test -x $AS_FOR_TARGET; then
1878 gcc_cv_as="$AS_FOR_TARGET"
1880 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1883 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1884 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1885 case "$ORIGINAL_AS_FOR_TARGET" in
1886 ./as | ./as$build_exeext) ;;
1887 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1890 AC_MSG_CHECKING(what assembler to use)
1891 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1892 # Single tree build which includes gas. We want to prefer it
1893 # over whatever linker top-level may have detected, since
1894 # we'll use what we're building after installation anyway.
1895 AC_MSG_RESULT(newly built gas)
1897 _gcc_COMPUTE_GAS_VERSION
1898 in_tree_gas_is_elf=no
1899 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1900 || (grep 'obj_format = multi' ../gas/Makefile \
1901 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1903 in_tree_gas_is_elf=yes
1906 AC_MSG_RESULT($gcc_cv_as)
1910 # Identify the linker which will work hand-in-glove with the newly
1911 # built GCC, so that we can examine its features. This is the linker
1912 # which will be driven by the driver program.
1914 # If build != host, and we aren't building gas in-tree, we identify a
1915 # build->target linker and hope that it will have the same features
1916 # as the host->target linker we'll be using.
1917 gcc_cv_gld_major_version=
1918 gcc_cv_gld_minor_version=
1919 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1920 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1922 AS_VAR_SET_IF(gcc_cv_ld,, [
1923 if test -x "$DEFAULT_LINKER"; then
1924 gcc_cv_ld="$DEFAULT_LINKER"
1925 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1926 && test -f ../ld/Makefile \
1927 && test x$build = x$host; then
1928 gcc_cv_ld=../ld/ld-new$build_exeext
1929 elif test -x collect-ld$build_exeext; then
1930 # Build using linker in the current directory.
1931 gcc_cv_ld=./collect-ld$build_exeext
1932 elif test -x $LD_FOR_TARGET; then
1933 gcc_cv_ld="$LD_FOR_TARGET"
1935 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1938 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1939 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1940 case "$ORIGINAL_LD_FOR_TARGET" in
1941 ./collect-ld | ./collect-ld$build_exeext) ;;
1942 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1945 AC_MSG_CHECKING(what linker to use)
1946 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1947 # Single tree build which includes ld. We want to prefer it
1948 # over whatever linker top-level may have detected, since
1949 # we'll use what we're building after installation anyway.
1950 AC_MSG_RESULT(newly built ld)
1952 in_tree_ld_is_elf=no
1953 if (grep 'EMUL = .*elf' ../ld/Makefile \
1954 || grep 'EMUL = .*linux' ../ld/Makefile \
1955 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1956 in_tree_ld_is_elf=yes
1958 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
1961 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1962 if test x$gcc_cv_gld_version != x; then
1966 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1967 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1970 AC_MSG_RESULT($gcc_cv_ld)
1974 # Figure out what nm we will be using.
1975 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1976 AS_VAR_SET_IF(gcc_cv_nm,, [
1977 if test -f $gcc_cv_binutils_srcdir/configure.in \
1978 && test -f ../binutils/Makefile \
1979 && test x$build = x$host; then
1980 gcc_cv_nm=../binutils/nm-new$build_exeext
1981 elif test -x nm$build_exeext; then
1982 gcc_cv_nm=./nm$build_exeext
1983 elif test -x $NM_FOR_TARGET; then
1984 gcc_cv_nm="$NM_FOR_TARGET"
1986 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1989 AC_MSG_CHECKING(what nm to use)
1990 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1991 # Single tree build which includes binutils.
1992 AC_MSG_RESULT(newly built nm)
1995 AC_MSG_RESULT($gcc_cv_nm)
1999 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2000 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2001 case "$ORIGINAL_NM_FOR_TARGET" in
2002 ./nm | ./nm$build_exeext) ;;
2003 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2007 # Figure out what objdump we will be using.
2008 AS_VAR_SET_IF(gcc_cv_objdump,, [
2009 if test -f $gcc_cv_binutils_srcdir/configure.in \
2010 && test -f ../binutils/Makefile \
2011 && test x$build = x$host; then
2012 # Single tree build which includes binutils.
2013 gcc_cv_objdump=../binutils/objdump$build_exeext
2014 elif test -x objdump$build_exeext; then
2015 gcc_cv_objdump=./objdump$build_exeext
2016 elif test -x $OBJDUMP_FOR_TARGET; then
2017 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2019 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2022 AC_MSG_CHECKING(what objdump to use)
2023 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2024 # Single tree build which includes binutils.
2025 AC_MSG_RESULT(newly built objdump)
2026 elif test x$gcc_cv_objdump = x; then
2027 AC_MSG_RESULT(not found)
2029 AC_MSG_RESULT($gcc_cv_objdump)
2032 # Figure out what assembler alignment features are present.
2033 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2037 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2038 [Define if your assembler supports .balign and .p2align.])])
2040 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2043 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2044 [Define if your assembler supports specifying the maximum number
2045 of bytes to skip when using the GAS .p2align command.])])
2047 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2050 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2051 [Define if your assembler supports .literal16.])])
2053 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2055 [conftest_label1: .word 0
2057 conftest_label2: .word 0
2059 [if test x$gcc_cv_nm != x; then
2060 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2061 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2062 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2064 else gcc_cv_as_subsection_m1=yes
2066 rm -f conftest.nm1 conftest.nm2
2068 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2069 [Define if your assembler supports .subsection and .subsection -1 starts
2070 emitting at the beginning of your section.])])
2072 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2075 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2077 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2079 [ .weakref foobar, barfnot],,
2080 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2082 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2085 .NSUBSPA $CODE$,COMDAT],,
2086 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2088 # .hidden needs to be supported in both the assembler and the linker,
2089 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2090 # This is irritatingly difficult to feature test for; we have to check the
2091 # date string after the version number. If we've got an in-tree
2092 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2094 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2095 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2100 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2101 [if test $in_tree_ld = yes ; then
2103 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2104 && test $in_tree_ld_is_elf = yes; then
2105 gcc_cv_ld_hidden=yes
2108 gcc_cv_ld_hidden=yes
2109 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2110 if echo "$ld_ver" | grep GNU > /dev/null; then
2112 ld_vers=`echo $ld_ver | sed -n \
2113 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2114 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2115 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2116 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2117 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2118 if test 0"$ld_date" -lt 20020404; then
2119 if test -n "$ld_date"; then
2120 # If there was date string, but was earlier than 2002-04-04, fail
2122 elif test -z "$ld_vers"; then
2123 # If there was no date string nor ld version number, something is wrong
2126 test -z "$ld_vers_patch" && ld_vers_patch=0
2127 if test "$ld_vers_major" -lt 2; then
2129 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2130 gcc_cv_ld_hidden="no"
2131 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2139 hppa64*-*-hpux* | ia64*-*-hpux*)
2140 gcc_cv_ld_hidden=yes
2148 libgcc_visibility=no
2149 AC_SUBST(libgcc_visibility)
2150 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2151 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2152 libgcc_visibility=yes
2153 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2154 [Define if your assembler and linker support .hidden.])
2157 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2158 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2166 [# GAS versions before 2.11 do not support uleb128,
2167 # despite appearing to.
2168 # ??? There exists an elf-specific test that will crash
2169 # the assembler. Perhaps it's better to figure out whether
2170 # arbitrary sections are supported and try the test.
2171 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2172 if echo "$as_ver" | grep GNU > /dev/null; then
2174 as_vers=`echo $as_ver | sed -n \
2175 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2176 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2177 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2179 if test $as_major -eq 2 && test $as_minor -lt 11
2181 else gcc_cv_as_leb128=yes
2184 [AC_DEFINE(HAVE_AS_LEB128, 1,
2185 [Define if your assembler supports .sleb128 and .uleb128.])])
2187 # GAS versions up to and including 2.11.0 may mis-optimize
2189 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2197 .section .eh_frame,"aw",@progbits
2199 .4byte .LECIE1-.LSCIE1
2213 .4byte .LEFDE1-.LASFDE1
2215 .4byte .LASFDE1-__FRAME_BEGIN__
2223 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2224 cat > conftest.lit <<EOF
2225 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2226 0010 01000000 12000000 18000000 00000000 ................
2227 0020 08000000 04080000 0044 .........D @&t@
2229 cat > conftest.big <<EOF
2230 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2231 0010 00000001 00000012 00000018 00000000 ................
2232 0020 00000008 04000000 0844 .........D @&t@
2234 # If the assembler didn't choke, and we can objdump,
2235 # and we got the correct data, then succeed.
2236 # The text in the here-document typically retains its unix-style line
2237 # endings, while the output of objdump will use host line endings.
2238 # Therefore, use diff -b for the comparisons.
2239 if test x$gcc_cv_objdump != x \
2240 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2241 | tail -3 > conftest.got \
2242 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2243 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2245 gcc_cv_as_eh_frame=yes
2246 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2247 gcc_cv_as_eh_frame=buggy
2249 # Uh oh, what do we do now?
2250 gcc_cv_as_eh_frame=no
2253 if test $gcc_cv_as_eh_frame = buggy; then
2254 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2255 [Define if your assembler mis-optimizes .eh_frame data.])
2258 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2259 [elf,2,12,0], [--fatal-warnings],
2260 [.section .rodata.str, "aMS", @progbits, 1])
2261 if test $gcc_cv_as_shf_merge = no; then
2262 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2263 [elf,2,12,0], [--fatal-warnings],
2264 [.section .rodata.str, "aMS", %progbits, 1])
2266 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2267 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2268 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2270 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2271 [elf,2,16,0], [--fatal-warnings],
2272 [.section .text,"axG",@progbits,.foo,comdat])
2273 if test $gcc_cv_as_comdat_group = yes; then
2274 gcc_cv_as_comdat_group_percent=no
2276 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2277 [elf,2,16,0], [--fatal-warnings],
2278 [.section .text,"axG",%progbits,.foo,comdat])
2280 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2282 if test 0"$ld_date" -lt 20050308; then
2283 if test -n "$ld_date"; then
2284 # If there was date string, but was earlier than 2005-03-08, fail
2286 elif test "$ld_vers_major" -lt 2; then
2288 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2293 # assume linkers other than GNU ld don't support COMDAT group
2296 if test $comdat_group = no; then
2297 gcc_cv_as_comdat_group=no
2298 gcc_cv_as_comdat_group_percent=no
2300 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2301 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2302 [Define 0/1 if your assembler and linker support COMDAT groups.])
2304 # Thread-local storage - the check is heavily parametrized.
2313 .section ".tdata","awT",@progbits
2316 ldq $27,__tls_get_addr($29) !literal!1
2317 lda $16,foo($29) !tlsgd!1
2318 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2319 ldq $27,__tls_get_addr($29) !literal!2
2320 lda $16,foo($29) !tlsldm!2
2321 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2322 ldq $1,foo($29) !gotdtprel
2323 ldah $2,foo($29) !dtprelhi
2324 lda $3,foo($2) !dtprello
2325 lda $4,foo($29) !dtprel
2326 ldq $1,foo($29) !gottprel
2327 ldah $2,foo($29) !tprelhi
2328 lda $3,foo($2) !tprello
2329 lda $4,foo($29) !tprel'
2332 tls_as_opt=--fatal-warnings
2336 .section ".tdata","awT",@progbits
2348 .section ".tdata","awT",@progbits
2352 addil LT%foo-$tls_gdidx$,gp
2353 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2356 addil LT%foo-$tls_ldidx$,gp
2358 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2359 addil LR%foo-$tls_dtpoff$,%ret0
2360 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2362 addil LT%foo-$tls_ieoff$,gp
2363 ldw RT%foo-$tls_ieoff$(%r1),%t2
2366 addil LR%foo-$tls_leoff$,%t1
2367 ldo RR%foo-$tls_leoff$(%r1),%t2'
2370 tls_as_opt=--fatal-warnings
2374 .section ".tdata","awT",%progbits
2387 .section ".tdata","awT",@progbits
2391 leal foo@TLSGD(,%ebx,1), %eax
2392 leal foo@TLSLDM(%ebx), %eax
2393 leal foo@DTPOFF(%eax), %edx
2394 movl foo@GOTTPOFF(%ebx), %eax
2395 subl foo@GOTTPOFF(%ebx), %eax
2396 addl foo@GOTNTPOFF(%ebx), %eax
2397 movl foo@INDNTPOFF, %eax
2398 movl $foo@TPOFF, %eax
2399 subl $foo@TPOFF, %eax
2400 leal foo@NTPOFF(%ecx), %eax'
2403 tls_as_opt=--fatal-warnings
2407 .section ".tdata","awT",@progbits
2411 leaq foo@TLSGD(%rip), %rdi
2412 leaq foo@TLSLD(%rip), %rdi
2413 leaq foo@DTPOFF(%rax), %rdx
2414 movq foo@GOTTPOFF(%rip), %rax
2415 movq $foo@TPOFF, %rax'
2418 tls_as_opt=--fatal-warnings
2422 .section ".tdata","awT",@progbits
2425 addl r16 = @ltoff(@dtpmod(foo#)), gp
2426 addl r17 = @ltoff(@dtprel(foo#)), gp
2427 addl r18 = @ltoff(@tprel(foo#)), gp
2428 addl r19 = @dtprel(foo#), gp
2429 adds r21 = @dtprel(foo#), r13
2430 movl r23 = @dtprel(foo#)
2431 addl r20 = @tprel(foo#), gp
2432 adds r22 = @tprel(foo#), r13
2433 movl r24 = @tprel(foo#)'
2436 tls_as_opt=--fatal-warnings
2440 .section .tdata,"awT",@progbits
2444 addiu $4, $28, %tlsgd(x)
2445 addiu $4, $28, %tlsldm(x)
2446 lui $4, %dtprel_hi(x)
2447 addiu $4, $4, %dtprel_lo(x)
2448 lw $4, %gottprel(x)($28)
2449 lui $4, %tprel_hi(x)
2450 addiu $4, $4, %tprel_lo(x)'
2453 tls_as_opt='-32 --fatal-warnings'
2457 .section ".tdata","awT",@progbits
2465 addi 3,31,ld0@got@tlsgd
2467 addi 3,31,x1@got@tlsld
2470 addis 9,3,x2@dtprel@ha
2471 addi 9,9,x2@dtprel@l
2472 lwz 9,x3@got@tprel(31)
2475 addis 9,2,x2@tprel@ha
2476 addi 9,9,x2@tprel@l'
2479 tls_as_opt="-a32 --fatal-warnings"
2483 .section ".tdata","awT",@progbits
2491 addi 3,2,ld0@got@tlsgd
2497 addi 3,2,x1@got@tlsld
2503 addis 9,3,x2@dtprel@ha
2504 addi 9,9,x2@dtprel@l
2507 ld 9,x3@got@dtprel(2)
2513 tls_as_opt="-a64 --fatal-warnings"
2517 .section ".tdata","awT",@progbits
2526 l %r1,foo@GOTNTPOFF(%r12)
2527 l %r1,0(%r1):tls_load:foo
2528 bas %r14,0(%r1,%r13):tls_gdcall:foo
2529 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2532 tls_as_opt="-m31 --fatal-warnings"
2536 .section ".tdata","awT",@progbits
2544 lg %r1,foo@GOTNTPOFF(%r12)
2545 larl %r1,foo@INDNTPOFF
2546 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2547 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2550 tls_as_opt="-m64 -Aesame --fatal-warnings"
2552 sh-*-* | sh[34]-*-*)
2554 .section ".tdata","awT",@progbits
2564 tls_as_opt=--fatal-warnings
2568 sparc*-sun-solaris2.[56789]*)
2569 # TLS was introduced in the Solaris 9 4/04 release but
2570 # we do not enable it by default on Solaris 9 either.
2571 if test "x$enable_tls" = xyes ; then
2577 sparc*-sun-solaris2.*)
2584 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2586 .section ".tdata",#alloc,#write,#tls
2589 sethi %tgd_hi22(foo), %o0
2590 add %o0, %tgd_lo10(foo), %o1
2591 add %l7, %o1, %o0, %tgd_add(foo)
2592 call __tls_get_addr, %tgd_call(foo)
2593 sethi %tldm_hi22(foo), %l1
2594 add %l1, %tldm_lo10(foo), %l2
2595 add %l7, %l2, %o0, %tldm_add(foo)
2596 call __tls_get_addr, %tldm_call(foo)
2597 sethi %tldo_hix22(foo), %l3
2598 xor %l3, %tldo_lox10(foo), %l4
2599 add %o0, %l4, %l5, %tldo_add(foo)
2600 sethi %tie_hi22(foo), %o3
2601 add %o3, %tie_lo10(foo), %o3
2602 ld [%l7 + %o3], %o2, %tie_ld(foo)
2603 add %g7, %o2, %o4, %tie_add(foo)
2604 sethi %tle_hix22(foo), %l1
2605 xor %l1, %tle_lox10(foo), %o5
2606 ld [%g7 + %o5], %o1'
2611 .section ".tdata","awT",@progbits
2614 sethi %tgd_hi22(foo), %o0
2615 add %o0, %tgd_lo10(foo), %o1
2616 add %l7, %o1, %o0, %tgd_add(foo)
2617 call __tls_get_addr, %tgd_call(foo)
2618 sethi %tldm_hi22(foo), %l1
2619 add %l1, %tldm_lo10(foo), %l2
2620 add %l7, %l2, %o0, %tldm_add(foo)
2621 call __tls_get_addr, %tldm_call(foo)
2622 sethi %tldo_hix22(foo), %l3
2623 xor %l3, %tldo_lox10(foo), %l4
2624 add %o0, %l4, %l5, %tldo_add(foo)
2625 sethi %tie_hi22(foo), %o3
2626 add %o3, %tie_lo10(foo), %o3
2627 ld [%l7 + %o3], %o2, %tie_ld(foo)
2628 add %g7, %o2, %o4, %tie_add(foo)
2629 sethi %tle_hix22(foo), %l1
2630 xor %l1, %tle_lox10(foo), %o5
2631 ld [%g7 + %o5], %o1'
2634 tls_as_opt="-32 --fatal-warnings"
2640 if test "x$enable_tls" = xno ; then
2641 : # TLS explicitly disabled.
2642 elif test "x$enable_tls" = xyes ; then
2643 set_have_as_tls=yes # TLS explicitly enabled.
2644 elif test -z "$tls_first_major"; then
2645 : # If we don't have a check, assume no support.
2647 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2648 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2649 [set_have_as_tls=yes])
2651 if test $set_have_as_tls = yes ; then
2652 AC_DEFINE(HAVE_AS_TLS, 1,
2653 [Define if your assembler supports thread-local storage.])
2656 # Target-specific assembler checks.
2658 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2659 gcc_cv_ld_static_dynamic=no
2660 if test $in_tree_ld = yes ; then
2661 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2662 gcc_cv_ld_static_dynamic=yes
2664 elif test x$gcc_cv_ld != x; then
2665 # Check if linker supports -Bstatic/-Bdynamic option
2666 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2667 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2668 gcc_cv_ld_static_dynamic=yes
2671 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2672 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2673 [Define if your linker supports -Bstatic/-Bdynamic option.])
2675 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2677 if test x"$demangler_in_ld" = xyes; then
2678 AC_MSG_CHECKING(linker --demangle support)
2679 gcc_cv_ld_demangle=no
2680 if test $in_tree_ld = yes; then
2681 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2682 gcc_cv_ld_demangle=yes
2684 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2685 # Check if the GNU linker supports --demangle option
2686 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2687 gcc_cv_ld_demangle=yes
2690 if test x"$gcc_cv_ld_demangle" = xyes; then
2691 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2692 [Define if your linker supports --demangle option.])
2694 AC_MSG_RESULT($gcc_cv_ld_demangle)
2698 # All TARGET_ABI_OSF targets.
2699 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2700 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2701 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2704 extbl $3, $2, $3 !lituse_bytoff!1
2705 ldq $2, a($29) !literal!1
2706 ldq $4, b($29) !literal!2
2707 ldq_u $3, 0($2) !lituse_base!1
2708 ldq $27, f($29) !literal!5
2709 jsr $26, ($27), f !lituse_jsr!5
2710 ldah $29, 0($26) !gpdisp!3
2711 lda $0, c($29) !gprel
2712 ldah $1, d($29) !gprelhigh
2713 lda $1, d($1) !gprellow
2714 lda $29, 0($29) !gpdisp!3],,
2715 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2716 [Define if your assembler supports explicit relocations.])])
2717 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2718 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2721 ldq $27, a($29) !literal!1
2722 jsr $26, ($27), a !lituse_jsrdirect!1],,
2723 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2724 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2728 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2729 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2730 [-no-mul-bug-abort], [.text],,
2731 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2732 [Define if your assembler supports the -no-mul-bug-abort option.])])
2736 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2737 [.register %g2, #scratch],,
2738 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2739 [Define if your assembler supports .register.])])
2741 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2743 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2744 [Define if your assembler supports -relax option.])])
2746 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2747 gcc_cv_as_sparc_ua_pcrel,,
2755 .uaword %r_disp32(foo)],
2756 [if test x$gcc_cv_ld != x \
2757 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2758 gcc_cv_as_sparc_ua_pcrel=yes
2761 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2762 [Define if your assembler and linker support unaligned PC relative relocs.])
2764 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2765 gcc_cv_as_sparc_ua_pcrel_hidden,,
2770 .uaword %r_disp32(foo)
2771 .byte 0x32, 0x33, 0x34
2776 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2777 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2778 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2779 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2780 if $gcc_cv_objdump -R conftest 2> /dev/null \
2781 | grep 'DISP32' > /dev/null 2>&1; then
2784 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2788 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2789 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2790 ]) # unaligned pcrel relocs
2792 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2793 gcc_cv_as_sparc_offsetable_lo10,,
2796 or %g1, %lo(ab) + 12, %g1
2797 or %g1, %lo(ab + 12), %g1],
2798 [if test x$gcc_cv_objdump != x \
2799 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2800 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2801 gcc_cv_as_sparc_offsetable_lo10=yes
2803 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2804 [Define if your assembler supports offsetable %lo().])])
2808 i[34567]86-*-* | x86_64-*-*)
2811 cygwin* | pe | mingw32*)
2812 # Used for DWARF 2 in PE
2813 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2814 gcc_cv_as_ix86_pe_secrel32,
2820 [if test x$gcc_cv_ld != x \
2821 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2822 gcc_cv_as_ix86_pe_secrel32=yes
2825 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2826 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2830 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2831 gcc_cv_as_ix86_filds_fists,
2832 [2,9,0],, [filds mem; fists mem],,
2833 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2834 [Define if your assembler uses the new HImode fild and fist notation.])])
2836 gcc_GAS_CHECK_FEATURE([cmov syntax],
2837 gcc_cv_as_ix86_cmov_sun_syntax,,,
2838 [cmovl.l %edx, %eax],,
2839 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2840 [Define if your assembler supports the Sun syntax for cmov.])])
2842 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2843 gcc_cv_as_ix86_ffreep,,,
2845 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2846 [Define if your assembler supports the ffreep mnemonic.])])
2848 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2849 gcc_cv_as_ix86_sahf,,,
2851 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2852 [Define if your assembler supports the sahf mnemonic.])])
2854 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2855 gcc_cv_as_ix86_diff_sect_delta,,,
2863 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2864 [Define if your assembler supports the subtraction of symbols in different sections.])])
2866 # This one is used unconditionally by i386.[ch]; it is to be defined
2867 # to 1 if the feature is present, 0 otherwise.
2868 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2869 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2875 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2876 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2877 [Define true if the assembler supports '.long foo@GOTOFF'.])
2881 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2882 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2884 addl r15 = @ltoffx(x#), gp
2886 ld8.mov r16 = [[r15]], x#],,
2887 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2888 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2894 *-*-aix*) conftest_s=' .machine "pwr5"
2898 gcc_GAS_CHECK_FEATURE([.machine directive support],
2899 gcc_cv_as_machine_directive,,,
2900 [ .machine ppc7400])
2901 if test x$gcc_cv_as_machine_directive != xyes; then
2902 echo "*** This target requires an assembler supporting \".machine\"" >&2
2903 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2904 test x$build = x$target && exit 1
2908 *) conftest_s=' .machine power4
2913 gcc_GAS_CHECK_FEATURE([mfcr field support],
2914 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2916 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2917 [Define if your assembler supports mfcr field.])])
2920 *-*-aix*) conftest_s=' .machine "pwr5"
2923 *) conftest_s=' .machine power5
2928 gcc_GAS_CHECK_FEATURE([popcntb support],
2929 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2931 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2932 [Define if your assembler supports popcntb field.])])
2935 *-*-aix*) conftest_s=' .machine "pwr5x"
2938 *) conftest_s=' .machine power5
2943 gcc_GAS_CHECK_FEATURE([fp round support],
2944 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2946 [AC_DEFINE(HAVE_AS_FPRND, 1,
2947 [Define if your assembler supports fprnd.])])
2950 *-*-aix*) conftest_s=' .machine "pwr6"
2953 *) conftest_s=' .machine power6
2958 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2959 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2961 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2962 [Define if your assembler supports mffgpr and mftgpr.])])
2965 *-*-aix*) conftest_s=' .csect .text[[PR]]
2967 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2971 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2972 *) conftest_s=' .text
2974 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2977 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2978 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2980 [AC_DEFINE(HAVE_AS_REL16, 1,
2981 [Define if your assembler supports R_PPC_REL16 relocs.])])
2984 *-*-aix*) conftest_s=' .machine "pwr6"
2987 *) conftest_s=' .machine power6
2992 gcc_GAS_CHECK_FEATURE([compare bytes support],
2993 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2995 [AC_DEFINE(HAVE_AS_CMPB, 1,
2996 [Define if your assembler supports cmpb.])])
2999 *-*-aix*) conftest_s=' .machine "pwr6"
3002 *) conftest_s=' .machine power6
3007 gcc_GAS_CHECK_FEATURE([decimal float support],
3008 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3010 [AC_DEFINE(HAVE_AS_DFP, 1,
3011 [Define if your assembler supports DFP instructions.])])
3013 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3014 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3015 [.gnu_attribute 4,1],,
3016 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3017 [Define if your assembler supports .gnu_attribute.])])
3021 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3022 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3023 [ lw $4,%gp_rel(foo)($4)],,
3024 [if test x$target_cpu_default = x
3025 then target_cpu_default=MASK_EXPLICIT_RELOCS
3026 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3028 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3029 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3030 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3031 [Define if the assembler understands -mno-shared.])])
3033 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3034 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3035 [.gnu_attribute 4,1],,
3036 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3037 [Define if your assembler supports .gnu_attribute.])])
3039 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3040 gcc_cv_as_mips_dtprelword, [2,18,0],,
3041 [.section .tdata,"awT",@progbits
3045 .dtprelword x+0x8000],,
3046 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3047 [Define if your assembler supports .dtprelword.])])
3051 # Mips and HP-UX need the GNU assembler.
3052 # Linux on IA64 might be able to use the Intel assembler.
3055 mips*-*-* | *-*-hpux* )
3056 if test x$gas_flag = xyes \
3057 || test x"$host" != x"$build" \
3058 || test ! -x "$gcc_cv_as" \
3059 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3062 echo "*** This configuration requires the GNU assembler" >&2
3068 # ??? Not all targets support dwarf2 debug_line, even within a version
3069 # of gas. Moreover, we need to emit a valid instruction to trigger any
3070 # info to the output file. So, as supported targets are added to gas 2.11,
3071 # add some instruction here to (also) show we expect this might work.
3072 # ??? Once 2.11 is released, probably need to add first known working
3073 # version to the per-target configury.
3075 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3076 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3077 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* \
3078 | spu-*-* | fido*-*-*)
3081 ia64*-*-* | s390*-*-*)
3088 if test x"$insn" != x; then
3090 .file 1 \"conftest.s\"
3093 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3094 gcc_cv_as_dwarf2_debug_line,
3095 [elf,2,11,0],, [$conftest_s],
3096 [if test x$gcc_cv_objdump != x \
3097 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3098 | grep debug_line > /dev/null 2>&1; then
3099 gcc_cv_as_dwarf2_debug_line=yes
3102 # The .debug_line file table must be in the exact order that
3103 # we specified the files, since these indices are also used
3104 # by DW_AT_decl_file. Approximate this test by testing if
3105 # the assembler bitches if the same index is assigned twice.
3106 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3107 gcc_cv_as_dwarf2_file_buggy,,,
3111 if test $gcc_cv_as_dwarf2_debug_line = yes \
3112 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3113 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3114 [Define if your assembler supports dwarf2 .file/.loc directives,
3115 and preserves file table indices exactly as given.])
3118 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3119 gcc_cv_as_gdwarf2_flag,
3120 [elf,2,11,0], [--gdwarf2], [$insn],,
3121 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3122 [Define if your assembler supports the --gdwarf2 option.])])
3124 gcc_GAS_CHECK_FEATURE([--gstabs option],
3125 gcc_cv_as_gstabs_flag,
3126 [elf,2,11,0], [--gstabs], [$insn],
3127 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3128 # and warns about it, but still exits successfully. So check for
3130 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3132 else gcc_cv_as_gstabs_flag=yes
3134 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3135 [Define if your assembler supports the --gstabs option.])])
3137 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3138 gcc_cv_as_debug_prefix_map_flag,
3139 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3140 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3141 [Define if your assembler supports the --debug-prefix-map option.])])
3144 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3145 [gcc_cv_as_line_zero],
3146 [gcc_cv_as_line_zero=no
3147 if test $in_tree_gas = yes; then
3148 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3149 elif test "x$gcc_cv_as" != x; then
3150 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3151 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3152 test "x`cat conftest.out`" = x
3154 gcc_cv_as_line_zero=yes
3156 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3157 cat conftest.s >&AS_MESSAGE_LOG_FD
3158 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3159 cat conftest.out >&AS_MESSAGE_LOG_FD
3161 rm -f conftest.o conftest.s conftest.out
3163 if test "x$gcc_cv_as_line_zero" = xyes; then
3164 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3165 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3168 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3169 gcc_cv_ld_ro_rw_mix=unknown
3170 if test $in_tree_ld = yes ; then
3171 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3172 && test $in_tree_ld_is_elf = yes; then
3173 gcc_cv_ld_ro_rw_mix=read-write
3175 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3176 echo '.section myfoosect, "a"' > conftest1.s
3177 echo '.section myfoosect, "aw"' > conftest2.s
3178 echo '.byte 1' >> conftest2.s
3179 echo '.section myfoosect, "a"' > conftest3.s
3180 echo '.byte 0' >> conftest3.s
3181 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3182 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3183 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3184 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3185 conftest2.o conftest3.o > /dev/null 2>&1; then
3186 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3187 | sed -e '/myfoosect/!d' -e N`
3188 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3189 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3190 gcc_cv_ld_ro_rw_mix=read-only
3192 gcc_cv_ld_ro_rw_mix=read-write
3197 rm -f conftest.* conftest[123].*
3200 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3201 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3202 [Define if your linker links a mix of read-only
3203 and read-write sections into a read-write section.])
3205 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3207 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3208 gcc_cv_ld_eh_frame_hdr=no
3209 if test $in_tree_ld = yes ; then
3210 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3211 && test $in_tree_ld_is_elf = yes; then
3212 gcc_cv_ld_eh_frame_hdr=yes
3214 elif test x$gcc_cv_ld != x; then
3215 # Check if linker supports --eh-frame-hdr option
3216 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3217 gcc_cv_ld_eh_frame_hdr=yes
3220 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3221 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3222 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3223 [Define if your linker supports --eh-frame-hdr option.])
3225 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3227 AC_MSG_CHECKING(linker position independent executable support)
3229 if test $in_tree_ld = yes ; then
3230 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3231 && test $in_tree_ld_is_elf = yes; then
3234 elif test x$gcc_cv_ld != x; then
3235 # Check if linker supports -pie option
3236 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3240 if test x"$gcc_cv_ld_pie" = xyes; then
3241 AC_DEFINE(HAVE_LD_PIE, 1,
3242 [Define if your linker supports -pie option.])
3244 AC_MSG_RESULT($gcc_cv_ld_pie)
3246 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3247 gcc_cv_ld_eh_gc_sections=no
3248 if test $in_tree_ld = yes ; then
3249 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3250 && test $in_tree_ld_is_elf = yes; then
3251 gcc_cv_ld_eh_gc_sections=yes
3253 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3254 cat > conftest.s <<EOF
3257 .type _start, @function
3260 .size _start, .-_start
3261 .section .text.foo,"ax",@progbits
3262 .type foo, @function
3266 .section .gcc_except_table.foo,"a",@progbits
3269 .section .eh_frame,"a",@progbits
3272 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3273 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3274 | grep "gc-sections option ignored" > /dev/null; then
3275 gcc_cv_ld_eh_gc_sections=no
3276 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3277 gcc_cv_ld_eh_gc_sections=yes
3278 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3279 if test x$gcc_cv_as_comdat_group != xyes; then
3280 gcc_cv_ld_eh_gc_sections=no
3281 cat > conftest.s <<EOF
3284 .type _start, @function
3287 .size _start, .-_start
3288 .section .gnu.linkonce.t.foo,"ax",@progbits
3289 .type foo, @function
3293 .section .gcc_except_table.foo,"a",@progbits
3296 .section .eh_frame,"a",@progbits
3299 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3300 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3301 | grep "gc-sections option ignored" > /dev/null; then
3302 gcc_cv_ld_eh_gc_sections=no
3303 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3304 gcc_cv_ld_eh_gc_sections=yes
3310 rm -f conftest.s conftest.o conftest
3314 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3315 gcc_cv_ld_eh_gc_sections=no
3318 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3319 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3320 [Define if your linker supports garbage collection of
3321 sections in presence of EH frames.])
3323 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3329 AC_CACHE_CHECK(linker --as-needed support,
3330 gcc_cv_ld_as_needed,
3331 [gcc_cv_ld_as_needed=no
3332 if test $in_tree_ld = yes ; then
3333 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3334 && test $in_tree_ld_is_elf = yes; then
3335 gcc_cv_ld_as_needed=yes
3337 elif test x$gcc_cv_ld != x; then
3338 # Check if linker supports --as-needed and --no-as-needed options
3339 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3340 gcc_cv_ld_as_needed=yes
3344 if test x"$gcc_cv_ld_as_needed" = xyes; then
3345 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3346 [Define if your linker supports --as-needed and --no-as-needed options.])
3349 case "$target:$tm_file" in
3350 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3351 AC_CACHE_CHECK(linker support for omitting dot symbols,
3352 gcc_cv_ld_no_dot_syms,
3353 [gcc_cv_ld_no_dot_syms=no
3354 if test $in_tree_ld = yes ; then
3355 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3356 gcc_cv_ld_no_dot_syms=yes
3358 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3359 cat > conftest1.s <<EOF
3363 cat > conftest2.s <<EOF
3364 .section ".opd","aw"
3369 .quad .LEfoo,.TOC.@tocbase,0
3375 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3376 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3377 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3378 gcc_cv_ld_no_dot_syms=yes
3380 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3383 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3384 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3385 [Define if your PowerPC64 linker only needs function descriptor syms.])
3390 AC_CACHE_CHECK(linker --sysroot support,
3392 [gcc_cv_ld_sysroot=no
3393 if test $in_tree_ld = yes ; then
3394 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3395 gcc_cv_ld_sysroot=yes
3397 elif test x$gcc_cv_ld != x; then
3398 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3399 gcc_cv_ld_sysroot=yes
3402 if test x"$gcc_cv_ld_sysroot" = xyes; then
3403 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3404 [Define if your linker supports --sysroot.])
3407 if test x$with_sysroot = x && test x$host = x$target \
3408 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3409 && test "$prefix" != "NONE"; then
3410 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3411 [Define to PREFIX/include if cpp should also search that directory.])
3414 # Test for stack protector support in target C library.
3415 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3416 gcc_cv_libc_provides_ssp,
3417 [gcc_cv_libc_provides_ssp=no
3420 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3421 if test "x$with_sysroot" = x; then
3422 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3423 elif test "x$with_build_sysroot" != "x"; then
3424 glibc_header_dir="${with_build_sysroot}/usr/include"
3425 elif test "x$with_sysroot" = xyes; then
3426 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3428 glibc_header_dir="${with_sysroot}/usr/include"
3431 glibc_header_dir=/usr/include
3433 # glibc 2.4 and later provides __stack_chk_fail and
3434 # either __stack_chk_guard, or TLS access to stack guard canary.
3435 if test -f $glibc_header_dir/features.h \
3436 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3437 $glibc_header_dir/features.h > /dev/null; then
3438 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3439 $glibc_header_dir/features.h > /dev/null; then
3440 gcc_cv_libc_provides_ssp=yes
3441 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3442 $glibc_header_dir/features.h > /dev/null \
3443 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3444 $glibc_header_dir/features.h > /dev/null; then
3445 gcc_cv_libc_provides_ssp=yes
3446 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3447 $glibc_header_dir/features.h > /dev/null && \
3448 test -f $glibc_header_dir/bits/uClibc_config.h && \
3449 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3450 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3451 gcc_cv_libc_provides_ssp=yes
3456 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3457 [echo "no __stack_chk_fail on this target"])
3459 *) gcc_cv_libc_provides_ssp=no ;;
3462 if test x$gcc_cv_libc_provides_ssp = xyes; then
3463 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3464 [Define if your target C library provides stack protector support])
3467 # Check if TFmode long double should be used by default or not.
3468 # Some glibc targets used DFmode long double, but with glibc 2.4
3469 # and later they can use TFmode.
3471 powerpc*-*-linux* | \
3476 AC_ARG_WITH(long-double-128,
3477 [ --with-long-double-128 Use 128-bit long double by default.],
3478 gcc_cv_target_ldbl128="$with_long_double_128",
3479 [gcc_cv_target_ldbl128=no
3480 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3481 if test "x$with_sysroot" = x; then
3482 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3483 elif test "x$with_build_sysroot" != "x"; then
3484 glibc_header_dir="${with_build_sysroot}/usr/include"
3485 elif test "x$with_sysroot" = xyes; then
3486 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3488 glibc_header_dir="${with_sysroot}/usr/include"
3491 glibc_header_dir=/usr/include
3494 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3495 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3496 && gcc_cv_target_ldbl128=yes
3501 if test x$gcc_cv_target_ldbl128 = xyes; then
3502 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3503 [Define if TFmode long double should be the default])
3506 # Find out what GC implementation we want, or may, use.
3508 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3516 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3519 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3524 echo "Using $GGC for garbage collection."
3526 # Use the system's zlib library.
3528 zlibinc="-I\$(srcdir)/../zlib"
3529 AC_ARG_WITH(system-zlib,
3530 [ --with-system-zlib use installed libz],
3537 dnl Very limited version of automake's enable-maintainer-mode
3539 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3540 dnl maintainer-mode is disabled by default
3541 AC_ARG_ENABLE(maintainer-mode,
3542 [ --enable-maintainer-mode
3543 enable make rules and dependencies not useful
3544 (and sometimes confusing) to the casual installer],
3545 maintainer_mode=$enableval,
3548 AC_MSG_RESULT($maintainer_mode)
3550 if test "$maintainer_mode" = "yes"; then
3561 # Make empty files to contain the specs and options for each language.
3562 # Then add #include lines to for a compiler that has specs and/or options.
3568 # These (without "all_") are set in each config-lang.in.
3569 # `language' must be a single word so is spelled singularly.
3572 all_outputs='Makefile gccbug libada-mk'
3573 # List of language makefile fragments.
3575 # List of language subdirectory makefiles. Deprecated.
3577 # Additional files for gengtype
3578 all_gtfiles="$target_gtfiles"
3580 # These are the languages that are set in --enable-languages,
3581 # and are available in the GCC tree.
3582 all_selected_languages=
3584 # Add the language fragments.
3585 # Languages are added via two mechanisms. Some information must be
3586 # recorded in makefile variables, these are defined in config-lang.in.
3587 # We accumulate them and plug them into the main Makefile.
3588 # The other mechanism is a set of hooks for each of the main targets
3589 # like `clean', `install', etc.
3591 language_hooks="Make-hooks"
3593 for lang in ${srcdir}/*/config-lang.in
3596 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3598 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3599 if test "x$lang_alias" = x
3601 echo "$lang doesn't set \$language." 1>&2
3604 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3605 subdirs="$subdirs $subdir"
3607 # $gcc_subdir is where the gcc integration files are to be found
3608 # for a language, both for internal compiler purposes (compiler
3609 # sources implementing front-end to GCC tree converters), and for
3610 # build infrastructure purposes (Make-lang.in, etc.)
3612 # This will be <subdir> (relative to $srcdir) if a line like
3613 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3614 # is found in <langdir>/config-lang.in, and will remain <langdir>
3617 # Except for the language alias (fetched above), the regular
3618 # "config-lang.in" contents are always retrieved from $gcc_subdir,
3619 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3620 # only this and the language alias.
3622 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
3623 if [ "$gcc_subdir" = "" ]; then
3624 gcc_subdir="$subdir"
3627 case ",$enable_languages," in
3629 all_selected_languages="$all_selected_languages $lang_alias"
3630 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3631 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3643 . ${srcdir}/$gcc_subdir/config-lang.in
3644 if test "x$language" = x
3646 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3651 case ",$enable_languages," in
3654 for i in $subdir_requires; do
3655 test -f "${srcdir}/$i/config-lang.in" && continue
3663 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3664 if test -f $srcdir/$gcc_subdir/lang.opt; then
3665 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3667 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3668 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3670 if test -f ${srcdir}/$gcc_subdir/Makefile.in
3671 then all_lang_makefiles="$gcc_subdir/Makefile"
3673 all_languages="$all_languages $language"
3674 all_compilers="$all_compilers $compilers"
3675 all_outputs="$all_outputs $outputs"
3676 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3679 # Pick up gtfiles for c
3681 . ${srcdir}/c-config-lang.in
3682 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3685 for language in $all_selected_languages
3687 check_languages="$check_languages check-$language"
3690 # We link each language in with a set of hooks, reached indirectly via
3691 # lang.${target}. Only do so for selected languages.
3695 target_list="all.cross start.encap rest.encap tags \
3696 install-common install-man install-info install-pdf dvi pdf \
3697 html uninstall info man srcextra srcman srcinfo \
3698 mostlyclean clean distclean maintainer-clean"
3700 for t in $target_list
3703 for lang in $all_selected_languages
3707 echo "lang.$t: $x" >> Make-hooks
3716 echo "dir ." > .gdbinit
3717 echo "dir ${srcdir}" >> .gdbinit
3718 if test x$gdb_needs_out_file_path = xyes
3720 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3722 if test "x$subdirs" != x; then
3725 echo "dir ${srcdir}/$s" >> .gdbinit
3728 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3730 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3731 AC_SUBST(gcc_tooldir)
3734 # Find a directory in which to install a shared libgcc.
3736 AC_ARG_ENABLE(version-specific-runtime-libs,
3737 [ --enable-version-specific-runtime-libs
3738 specify that runtime libraries should be
3739 installed in a compiler-specific directory])
3741 AC_ARG_WITH(slibdir,
3742 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3743 slibdir="$with_slibdir",
3744 if test "${enable_version_specific_runtime_libs+set}" = set; then
3745 slibdir='$(libsubdir)'
3746 elif test "$host" != "$target"; then
3747 slibdir='$(build_tooldir)/lib'
3753 AC_ARG_WITH(datarootdir,
3754 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3755 datarootdir="\${prefix}/$with_datarootdir",
3756 datarootdir='$(prefix)/share')
3757 AC_SUBST(datarootdir)
3760 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3761 docdir="\${prefix}/$with_docdir",
3762 docdir='$(datarootdir)')
3765 AC_ARG_WITH(htmldir,
3766 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3767 htmldir="\${prefix}/$with_htmldir",
3768 htmldir='$(docdir)')
3771 # Substitute configuration variables
3774 AC_SUBST(all_compilers)
3775 AC_SUBST(all_gtfiles)
3776 AC_SUBST(all_lang_makefrags)
3777 AC_SUBST(all_lang_makefiles)
3778 AC_SUBST(all_languages)
3779 AC_SUBST(all_selected_languages)
3780 AC_SUBST(build_exeext)
3781 AC_SUBST(build_install_headers_dir)
3782 AC_SUBST(build_xm_file_list)
3783 AC_SUBST(build_xm_include_list)
3784 AC_SUBST(build_xm_defines)
3785 AC_SUBST(build_file_translate)
3786 AC_SUBST(check_languages)
3787 AC_SUBST(cpp_install_dir)
3788 AC_SUBST(xmake_file)
3789 AC_SUBST(tmake_file)
3790 AC_SUBST(extra_gcc_objs)
3791 AC_SUBST(extra_headers_list)
3792 AC_SUBST(extra_objs)
3793 AC_SUBST(extra_parts)
3794 AC_SUBST(extra_passes)
3795 AC_SUBST(extra_programs)
3796 AC_SUBST(float_h_file)
3797 AC_SUBST(gcc_config_arguments)
3798 AC_SUBST(gcc_gxx_include_dir)
3799 AC_SUBST(host_exeext)
3800 AC_SUBST(host_xm_file_list)
3801 AC_SUBST(host_xm_include_list)
3802 AC_SUBST(host_xm_defines)
3803 AC_SUBST(out_host_hook_obj)
3805 AC_SUBST(lang_opt_files)
3806 AC_SUBST(lang_specs_files)
3807 AC_SUBST(lang_tree_files)
3808 AC_SUBST(local_prefix)
3810 AC_SUBST(objc_boehm_gc)
3812 AC_SUBST(out_object_file)
3813 AC_SUBST(thread_file)
3814 AC_SUBST(tm_file_list)
3815 AC_SUBST(tm_include_list)
3816 AC_SUBST(tm_defines)
3817 AC_SUBST(tm_p_file_list)
3818 AC_SUBST(tm_p_include_list)
3819 AC_SUBST(xm_file_list)
3820 AC_SUBST(xm_include_list)
3821 AC_SUBST(xm_defines)
3822 AC_SUBST(c_target_objs)
3823 AC_SUBST(cxx_target_objs)
3824 AC_SUBST(fortran_target_objs)
3825 AC_SUBST(target_cpu_default)
3827 AC_SUBST_FILE(language_hooks)
3830 if test x${build} = x${host} ; then
3831 if test x${host} = x${target} ; then
3832 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3834 echo "Links are now set up to build a cross-compiler" 1>&2
3835 echo " from ${host} to ${target}." 1>&2
3838 if test x${host} = x${target} ; then
3839 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3840 echo " for ${target}." 1>&2
3842 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3843 echo " from ${host} to ${target}." 1>&2
3847 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3848 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3850 # Configure the subdirectories
3851 # AC_CONFIG_SUBDIRS($subdirs)
3853 # Create the Makefile
3854 # and configure language subdirectories
3855 AC_CONFIG_FILES($all_outputs)
3857 AC_CONFIG_COMMANDS([default],
3859 case ${CONFIG_HEADERS} in
3860 *auto-host.h:config.in*)
3863 # Make sure all the subdirs exist.
3864 for d in $subdirs doc build
3866 test -d $d || mkdir $d
3869 [subdirs='$subdirs'])