2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
279 # autoconf is lame and doesn't give us any substitution variable for this.
280 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
281 NO_MINUS_C_MINUS_O=yes
283 OUTPUT_OPTION='-o $@'
285 AC_SUBST(NO_MINUS_C_MINUS_O)
286 AC_SUBST(OUTPUT_OPTION)
288 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
289 # optimizations to be activated explicitly by the toplevel.
292 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
296 # -------------------------
297 # Check C compiler features
298 # -------------------------
303 # sizeof(char) is 1 by definition.
304 AC_CHECK_SIZEOF(void *)
305 AC_CHECK_SIZEOF(short)
307 AC_CHECK_SIZEOF(long)
308 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
309 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
311 # ---------------------
312 # Warnings and checking
313 # ---------------------
315 # Check $CC warning features (if it's GCC).
316 # We want to use -pedantic, but we don't want warnings about
320 # So, we only use -pedantic if we can disable those warnings.
322 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
323 -Wmissing-prototypes], [loose_warn])
324 ACX_PROG_CC_WARNING_OPTS([-Wc++-compat], [cxx_compat_warn])
325 ACX_PROG_CC_WARNING_OPTS([-Wold-style-definition \
326 -Wmissing-format-attribute], [strict_warn])
327 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long -Wno-variadic-macros \
328 -Wno-overlength-strings], [strict_warn])
329 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
331 # The above macros do nothing if the compiler is not GCC. However, the
332 # Makefile has more goo to add other flags, so this variabl is used to
333 # enables warnings only for GCC.
335 if test "x$GCC" = "xyes"; then
336 warn_cflags='$(GCC_WARN_CFLAGS)'
338 AC_SUBST(warn_cflags)
340 # Enable expensive internal checks
342 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
346 AC_ARG_ENABLE(checking,
347 [ --enable-checking[=LIST]
348 enable expensive run-time checks. With LIST,
349 enable only specific categories of checks.
350 Categories are: yes,no,all,none,release.
351 Flags are: assert,df,fold,gc,gcac,misc,
352 rtlflag,rtl,runtime,tree,valgrind,types.],
353 [ac_checking_flags="${enableval}"],[
354 # Determine the default checks.
355 if test x$is_release = x ; then
356 ac_checking_flags=yes
358 ac_checking_flags=release
360 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
361 for check in release $ac_checking_flags
364 # these set all the flags to specific states
365 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
366 ac_fold_checking= ; ac_gc_checking=1 ;
367 ac_gc_always_collect= ; ac_rtl_checking= ;
368 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
369 ac_tree_checking=1 ; ac_valgrind_checking= ;
370 ac_types_checking=1 ;;
371 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
372 ac_fold_checking= ; ac_gc_checking= ;
373 ac_gc_always_collect= ; ac_rtl_checking= ;
374 ac_rtlflag_checking= ; ac_runtime_checking= ;
375 ac_tree_checking= ; ac_valgrind_checking= ;
376 ac_types_checking= ;;
377 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
378 ac_fold_checking=1 ; ac_gc_checking=1 ;
379 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
380 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
381 ac_tree_checking=1 ; ac_valgrind_checking= ;
382 ac_types_checking=1 ;;
383 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
384 ac_fold_checking= ; ac_gc_checking= ;
385 ac_gc_always_collect= ; ac_rtl_checking= ;
386 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
387 ac_tree_checking= ; ac_valgrind_checking= ;
388 ac_types_checking= ;;
389 # these enable particular checks
390 assert) ac_assert_checking=1 ;;
391 df) ac_df_checking=1 ;;
392 fold) ac_fold_checking=1 ;;
393 gc) ac_gc_checking=1 ;;
394 gcac) ac_gc_always_collect=1 ;;
395 misc) ac_checking=1 ;;
396 rtl) ac_rtl_checking=1 ;;
397 rtlflag) ac_rtlflag_checking=1 ;;
398 runtime) ac_runtime_checking=1 ;;
399 tree) ac_tree_checking=1 ;;
400 types) ac_types_checking=1 ;;
401 valgrind) ac_valgrind_checking=1 ;;
402 *) AC_MSG_ERROR(unknown check category $check) ;;
408 if test x$ac_checking != x ; then
409 AC_DEFINE(ENABLE_CHECKING, 1,
410 [Define if you want more run-time sanity checks. This one gets a grab
411 bag of miscellaneous but relatively cheap checks.])
412 nocommon_flag=-fno-common
414 AC_SUBST(nocommon_flag)
415 if test x$ac_df_checking != x ; then
416 AC_DEFINE(ENABLE_DF_CHECKING, 1,
417 [Define if you want more run-time sanity checks for dataflow.])
419 if test x$ac_assert_checking != x ; then
420 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
421 [Define if you want assertions enabled. This is a cheap check.])
423 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
424 if test x$ac_runtime_checking != x ; then
425 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
426 [Define if you want runtime assertions enabled. This is a cheap check.])
428 if test x$ac_tree_checking != x ; then
429 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
430 [Define if you want all operations on trees (the basic data
431 structure of the front ends) to be checked for dynamic type safety
432 at runtime. This is moderately expensive. The tree browser debugging
433 routines will also be enabled by this option.
435 TREEBROWSER=tree-browser.o
437 if test x$ac_types_checking != x ; then
438 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
439 [Define if you want all gimple types to be verified after gimplifiation.
443 AC_SUBST(TREEBROWSER)
444 if test x$ac_rtl_checking != x ; then
445 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
446 [Define if you want all operations on RTL (the basic data structure
447 of the optimizer and back end) to be checked for dynamic type safety
448 at runtime. This is quite expensive.])
450 if test x$ac_rtlflag_checking != x ; then
451 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
452 [Define if you want RTL flag accesses to be checked against the RTL
453 codes that are supported for each access macro. This is relatively
456 if test x$ac_gc_checking != x ; then
457 AC_DEFINE(ENABLE_GC_CHECKING, 1,
458 [Define if you want the garbage collector to do object poisoning and
459 other memory allocation checks. This is quite expensive.])
461 if test x$ac_gc_always_collect != x ; then
462 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
463 [Define if you want the garbage collector to operate in maximally
464 paranoid mode, validating the entire heap and collecting garbage at
465 every opportunity. This is extremely expensive.])
467 if test x$ac_fold_checking != x ; then
468 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
469 [Define if you want fold checked that it never destructs its argument.
470 This is quite expensive.])
472 valgrind_path_defines=
475 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
476 dnl # an if statement. This was the source of very frustrating bugs
477 dnl # in converting to autoconf 2.5x!
478 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
480 if test x$ac_valgrind_checking != x ; then
481 # It is certainly possible that there's valgrind but no valgrind.h.
482 # GCC relies on making annotations so we must have both.
483 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
484 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
485 [[#include <valgrind/memcheck.h>
486 #ifndef VALGRIND_DISCARD
487 #error VALGRIND_DISCARD not defined
489 [gcc_cv_header_valgrind_memcheck_h=yes],
490 [gcc_cv_header_valgrind_memcheck_h=no])
491 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
492 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
493 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
494 [[#include <memcheck.h>
495 #ifndef VALGRIND_DISCARD
496 #error VALGRIND_DISCARD not defined
498 [gcc_cv_header_memcheck_h=yes],
499 [gcc_cv_header_memcheck_h=no])
500 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
501 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
502 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
503 if test "x$valgrind_path" = "x" \
504 || (test $have_valgrind_h = no \
505 && test $gcc_cv_header_memcheck_h = no \
506 && test $gcc_cv_header_valgrind_memcheck_h = no); then
507 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
509 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
510 valgrind_command="$valgrind_path -q"
511 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
512 [Define if you want to run subprograms and generated programs
513 through valgrind (a memory checker). This is extremely expensive.])
514 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
515 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
516 [Define if valgrind's valgrind/memcheck.h header is installed.])
518 if test $gcc_cv_header_memcheck_h = yes; then
519 AC_DEFINE(HAVE_MEMCHECK_H, 1,
520 [Define if valgrind's memcheck.h header is installed.])
523 AC_SUBST(valgrind_path_defines)
524 AC_SUBST(valgrind_command)
526 # Enable code coverage collection
527 AC_ARG_ENABLE(coverage,
528 [ --enable-coverage[=LEVEL]
529 enable compiler's code coverage collection.
530 Use to measure compiler performance and locate
531 unused parts of the compiler. With LEVEL, specify
532 optimization. Values are opt, noopt,
534 [case "${enableval}" in
536 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
539 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
542 # a.k.a. --disable-coverage
546 AC_MSG_ERROR(unknown coverage setting $enableval)
550 AC_SUBST(coverage_flags)
552 AC_ARG_ENABLE(gather-detailed-mem-stats,
553 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
554 [enable_gather_detailed_mem_stats=no])
555 if test x$enable_gather_detailed_mem_stats = xyes ; then
556 AC_DEFINE(GATHER_STATISTICS, 1,
557 [Define to enable detailed memory allocation stats gathering.])
560 # -------------------------------
561 # Miscenalleous configure options
562 # -------------------------------
566 [ --with-stabs arrange to use stabs instead of host debug format],
570 # Determine whether or not multilibs are enabled.
571 AC_ARG_ENABLE(multilib,
572 [ --enable-multilib enable library support for multiple ABIs],
573 [], [enable_multilib=yes])
574 AC_SUBST(enable_multilib)
576 # Enable __cxa_atexit for C++.
577 AC_ARG_ENABLE(__cxa_atexit,
578 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
581 # Enable C extension for decimal float if target supports it.
582 AC_ARG_ENABLE(decimal-float,
583 [ --enable-decimal-float={no,yes,bid,dpd}
584 enable decimal float extension to C. Selecting 'bid'
585 or 'dpd' choses which decimal floating point format
588 case $enable_decimal_float in
589 yes | no | bid | dpd) ;;
590 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
591 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
596 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
597 enable_decimal_float=yes
600 AC_MSG_WARN(decimal float is not supported for this target, ignored)
601 enable_decimal_float=no
606 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
607 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
608 [Define to 1 to enable decimal float extension to C.])
610 # x86's use BID format instead of DPD
611 case x$enable_decimal_float in
614 i?86*-*-linux* | x86_64*-*-linux*)
615 enable_decimal_float=bid
618 enable_decimal_float=dpd
623 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
624 # dependency on libdecnumber.
625 enable_decimal_float=dpd
628 AC_SUBST(enable_decimal_float)
630 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
631 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
632 [Define to 1 to specify that we are using the BID decimal floating
633 point format instead of DPD])
635 # Enable C extension for fixed-point arithmetic.
636 AC_ARG_ENABLE(fixed-point,
637 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
645 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
646 enable_fixed_point=no
649 enable_fixed_point=yes
654 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
655 enable_fixed_point=no
659 AC_SUBST(enable_fixed_point)
661 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
662 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
663 [Define to 1 to enable fixed-point arithmetic extension to C.])
666 # Pass with no value to take the default
667 # Pass with a value to specify a thread package
668 AC_ARG_ENABLE(threads,
669 [ --enable-threads enable thread usage for target GCC
670 --enable-threads=LIB use LIB thread package for target GCC],,
674 [ --enable-tls enable or disable generation of tls code
675 overriding the assembler check for tls support],
679 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
680 Valid choices are 'yes' and 'no'.]) ;;
684 AC_ARG_ENABLE(objc-gc,
685 [ --enable-objc-gc enable the use of Boehm's garbage collector with
686 the GNU Objective-C runtime],
687 if test x$enable_objc_gc = xno; then
695 [ --with-dwarf2 force the default debug format to be DWARF 2],
696 dwarf2="$with_dwarf2",
699 AC_ARG_ENABLE(shared,
700 [ --disable-shared don't provide a shared libgcc],
702 case $enable_shared in
706 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
707 for pkg in $enableval; do
708 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
715 ], [enable_shared=yes])
716 AC_SUBST(enable_shared)
718 AC_ARG_WITH(build-sysroot,
719 [ --with-build-sysroot=sysroot
720 use sysroot as the system root during the build])
723 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
725 case ${with_sysroot} in
726 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
727 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
730 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
731 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
733 if test "x$prefix" = xNONE; then
734 test_prefix=/usr/local
738 if test "x$exec_prefix" = xNONE; then
739 test_exec_prefix=$test_prefix
741 test_exec_prefix=$exec_prefix
743 case ${TARGET_SYSTEM_ROOT} in
744 "${test_prefix}"|"${test_prefix}/"*|\
745 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
746 '${prefix}'|'${prefix}/'*|\
747 '${exec_prefix}'|'${exec_prefix}/'*)
748 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
749 TARGET_SYSTEM_ROOT_DEFINE="$t"
754 TARGET_SYSTEM_ROOT_DEFINE=
755 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
757 AC_SUBST(TARGET_SYSTEM_ROOT)
758 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
759 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
761 # Build with intermodule optimisations
762 AC_ARG_ENABLE(intermodule,
763 [ --enable-intermodule build the compiler in one step],
764 [case ${enable_intermodule} in
765 yes) onestep="-onestep";;
771 ACX_PKGVERSION([GCC])
772 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
774 # Sanity check enable_languages in case someone does not run the toplevel
775 # configure # script.
776 AC_ARG_ENABLE(languages,
777 [ --enable-languages=LIST specify which front-ends to build],
778 [case ,${enable_languages}, in
780 # go safe -- we cannot be much sure without the toplevel
782 # analysis of which target libs are present and usable
786 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
791 enable_languages=c,${enable_languages}
794 [enable_languages=c])
796 # Used by documentation targets
797 AC_SUBST(datarootdir)
801 # -------------------------
802 # Checks for other programs
803 # -------------------------
807 # Find some useful tools
809 # We need awk to create options.c and options.h.
810 # Bail out if it's missing.
812 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
820 # By default, the Darwin ranlib will not treat common symbols as
821 # definitions when building the archive table of contents. Other
822 # ranlibs do that; pass an option to the Darwin ranlib that makes
823 # it behave similarly.
829 AC_SUBST(ranlib_flags)
833 # See if cmp has --ignore-initial.
834 gcc_AC_PROG_CMP_IGNORE_INITIAL
836 # See if we have the mktemp command.
837 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
839 # See if makeinfo has been installed and is modern enough
840 # that we can use it.
841 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
842 [GNU texinfo.* \([0-9][0-9.]*\)],
843 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
844 if test $gcc_cv_prog_makeinfo_modern = no; then
846 *** Makeinfo is missing or too old.
847 *** Info documentation will not be built.])
854 # Is pod2man recent enough to regenerate manpages?
855 AC_MSG_CHECKING([for recent Pod::Man])
856 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
858 GENERATED_MANPAGES=generated-manpages
863 AC_SUBST(GENERATED_MANPAGES)
865 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
868 dnl Don't use AC_PROG_LEX; we insist on flex.
869 dnl LEXLIB is not useful in gcc.
870 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
873 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
875 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
876 # check for build == host before using them.
879 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
880 && test -d ../binutils ; then
881 NM='$(objdir)/../binutils/nm-new'
883 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
887 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
888 && test -d ../binutils ; then
889 AR='$(objdir)/../binutils/ar'
891 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
895 # --------------------
896 # Checks for C headers
897 # --------------------
899 AC_MSG_CHECKING(for GNU C library)
900 AC_CACHE_VAL(gcc_cv_glibc,
901 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
902 [[#include <features.h>]], [[
903 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
904 #error Not a GNU C library system
908 AC_MSG_RESULT($gcc_cv_glibc)
909 if test $gcc_cv_glibc = yes; then
910 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
913 # Need to reject headers which give warnings, so that the -Werror bootstrap
914 # works later. *sigh* This needs to come before all header checks.
921 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
922 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
923 sys/resource.h sys/param.h sys/times.h sys/stat.h \
924 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
926 # Check for thread headers.
927 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
928 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
930 # These tests can't be done till we know if we have limits.h.
939 # These libraries may be used by collect2.
940 # We may need a special search path to get them linked.
941 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
943 for libs in '' -lld -lmld \
944 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
945 '-L/usr/lib/cmplrs/cc3.11 -lmld'
948 AC_TRY_LINK_FUNC(ldopen,
949 [gcc_cv_collect2_libs="$libs"; break])
952 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
953 case $gcc_cv_collect2_libs in
955 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
957 AC_SUBST(COLLECT2_LIBS)
959 # When building Ada code on Alpha, we need exc_resume which is usually in
960 # -lexc. So test for it.
963 AC_SEARCH_LIBS(exc_resume, exc)
966 AC_SUBST(GNAT_LIBEXC)
968 # Some systems put ldexp and frexp in libm instead of libc; assume
969 # they're both in the same place. jcf-dump needs them.
972 AC_SEARCH_LIBS(ldexp, m)
977 # Use <inttypes.h> only if it exists,
978 # doesn't clash with <sys/types.h>, and declares intmax_t.
979 AC_MSG_CHECKING(for inttypes.h)
980 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
981 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
982 [[#include <sys/types.h>
983 #include <inttypes.h>]],
984 [[intmax_t i = -1;]])],
985 [gcc_cv_header_inttypes_h=yes],
986 [gcc_cv_header_inttypes_h=no])])
987 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
988 if test $gcc_cv_header_inttypes_h = yes; then
989 AC_DEFINE(HAVE_INTTYPES_H, 1,
990 [Define if you have a working <inttypes.h> header file.])
993 dnl Disabled until we have a complete test for buggy enum bitfields.
994 dnl gcc_AC_C_ENUM_BF_UNSIGNED
996 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
997 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
998 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
999 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1000 putchar_unlocked putc_unlocked)
1001 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1002 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1003 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1006 if test x$ac_cv_func_mbstowcs = xyes; then
1007 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1008 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1014 [gcc_cv_func_mbstowcs_works=yes],
1015 [gcc_cv_func_mbstowcs_works=no],
1016 [gcc_cv_func_mbstowcs_works=yes])])
1017 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1018 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1019 [Define this macro if mbstowcs does not crash when its
1020 first argument is NULL.])
1024 AC_CHECK_TYPE(ssize_t, int)
1026 # Try to determine the array type of the second argument of getgroups
1027 # for the target system (int or gid_t).
1029 if test "${target}" = "${build}"; then
1030 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1033 # This condition may need some tweaking. It should include all
1034 # targets where the array type of the second argument of getgroups
1035 # is int and the type of gid_t is not equivalent to int.
1036 *-*-sunos* | *-*-ultrix*)
1037 TARGET_GETGROUPS_T=int
1040 TARGET_GETGROUPS_T=gid_t
1044 AC_SUBST(TARGET_GETGROUPS_T)
1046 gcc_AC_FUNC_MMAP_BLACKLIST
1050 # Under VMS, vfork works very differently than on Unix. The standard test
1051 # won't work, and it isn't easily adaptable. It makes more sense to
1053 ac_cv_func_vfork_works=yes
1059 # Until we have in-tree GNU iconv:
1061 AC_SUBST(LIBICONV_DEP)
1067 # We will need to find libiberty.h and ansidecl.h
1068 saved_CFLAGS="$CFLAGS"
1069 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1070 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1071 strsignal strstr strverscmp \
1072 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1073 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1074 #include "ansidecl.h"
1075 #include "system.h"])
1077 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1078 #include "ansidecl.h"
1080 #ifdef HAVE_SYS_RESOURCE_H
1081 #include <sys/resource.h>
1085 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1086 #include "ansidecl.h"
1088 #ifdef HAVE_SYS_RESOURCE_H
1089 #include <sys/resource.h>
1091 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1092 [Define to \`long' if <sys/resource.h> doesn't define.])])
1094 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1095 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1096 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1097 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1098 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1099 #include "ansidecl.h"
1108 gcc_AC_CHECK_DECLS(times, , ,[
1109 #include "ansidecl.h"
1111 #ifdef HAVE_SYS_TIMES_H
1112 #include <sys/times.h>
1116 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1117 #include "ansidecl.h"
1122 # More time-related stuff.
1123 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1124 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1125 #include "ansidecl.h"
1127 #ifdef HAVE_SYS_TIMES_H
1128 #include <sys/times.h>
1130 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1131 if test $ac_cv_struct_tms = yes; then
1132 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1133 [Define if <sys/times.h> defines struct tms.])
1136 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1137 # revisit after autoconf 2.50.
1138 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1139 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1140 #include "ansidecl.h"
1142 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1143 if test $gcc_cv_type_clock_t = yes; then
1144 AC_DEFINE(HAVE_CLOCK_T, 1,
1145 [Define if <time.h> defines clock_t.])
1148 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1149 CFLAGS="$saved_CFLAGS"
1151 gcc_AC_INITFINI_ARRAY
1153 # mkdir takes a single argument on some systems.
1154 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1162 # With Setjmp/Longjmp based exception handling.
1163 AC_ARG_ENABLE(sjlj-exceptions,
1164 [ --enable-sjlj-exceptions
1165 arrange to use setjmp/longjmp exception handling],
1168 if test $enableval != yes; then
1169 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1174 force_sjlj_exceptions=yes],
1177 force_sjlj_exceptions=yes
1181 force_sjlj_exceptions=no
1184 if test $force_sjlj_exceptions = yes; then
1185 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1186 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1187 [Define 0/1 to force the choice for exception handling model.])
1190 # For platforms with the unwind ABI which includes an unwind library,
1191 # libunwind, we can choose to use the system libunwind.
1192 AC_ARG_WITH(system-libunwind,
1193 [ --with-system-libunwind use installed libunwind])
1195 # config.gcc also contains tests of with_system_libunwind.
1196 if test x$with_system_libunwind = xyes; then
1197 AC_DEFINE(HAVE_GETIPINFO, 1,
1198 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1201 # --------------------------------------------------------
1202 # Build, host, and target specific configuration fragments
1203 # --------------------------------------------------------
1205 # Collect build-machine-specific information.
1206 . ${srcdir}/config.build
1208 # Collect host-machine-specific information.
1209 . ${srcdir}/config.host
1213 # Collect target-machine-specific information.
1214 . ${srcdir}/config.gcc
1216 extra_objs="${host_extra_objs} ${extra_objs}"
1217 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1219 # Default the target-machine variables that were not explicitly set.
1220 if test x"$tm_file" = x
1221 then tm_file=$cpu_type/$cpu_type.h; fi
1223 if test x"$extra_headers" = x
1224 then extra_headers=; fi
1226 if test x$md_file = x
1227 then md_file=$cpu_type/$cpu_type.md; fi
1229 if test x$out_file = x
1230 then out_file=$cpu_type/$cpu_type.c; fi
1232 if test x"$tmake_file" = x
1233 then tmake_file=$cpu_type/t-$cpu_type
1236 if test x"$dwarf2" = xyes
1237 then tm_file="$tm_file tm-dwarf2.h"
1240 # Say what files are being used for the output code and MD file.
1241 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1242 echo "Using \`$srcdir/config/$md_file' as machine description file."
1244 # If any of the xm_file variables contain nonexistent files, warn
1245 # about them and drop them.
1248 for x in $build_xm_file; do
1249 if test -f $srcdir/config/$x
1251 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1257 for x in $host_xm_file; do
1258 if test -f $srcdir/config/$x
1260 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1266 for x in $xm_file; do
1267 if test -f $srcdir/config/$x
1269 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1275 for f in $tm_file; do
1278 if test $count = ax; then
1279 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1281 echo "Using the following target machine macro files:"
1282 for f in $tm_file; do
1283 echo " $srcdir/config/$f"
1287 if test x$need_64bit_hwint = xyes; then
1288 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1289 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1292 if test x$use_long_long_for_widest_fast_int = xyes; then
1293 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1294 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1295 efficiently supported by the host hardware.])
1299 for f in $host_xm_file; do
1302 if test $count = a; then
1304 elif test $count = ax; then
1305 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1307 echo "Using the following host machine macro files:"
1308 for f in $host_xm_file; do
1309 echo " $srcdir/config/$f"
1312 echo "Using ${out_host_hook_obj} for host machine hooks."
1314 if test "$host_xm_file" != "$build_xm_file"; then
1316 for f in $build_xm_file; do
1319 if test $count = a; then
1321 elif test $count = ax; then
1322 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1324 echo "Using the following build machine macro files:"
1325 for f in $build_xm_file; do
1326 echo " $srcdir/config/$f"
1333 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1334 gcc_cv_mcontext_underscores,
1336 #include <sys/cdefs.h>
1337 #include <sys/signal.h>
1338 #include <ucontext.h>
1339 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1341 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1342 if test $gcc_cv_mcontext_underscores = yes; then
1343 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1344 [mcontext_t fields start with __])
1353 # Check if a valid thread package
1354 case ${enable_threads} in
1357 target_thread_file='single'
1361 target_thread_file='single'
1363 aix | dce | gnat | irix | posix | posix95 | rtems | \
1364 single | solaris | vxworks | win32 | mipssde)
1365 target_thread_file=${enable_threads}
1368 echo "${enable_threads} is an unknown thread package" 1>&2
1373 if test x${thread_file} = x; then
1374 # No thread file set by target-specific clauses in config.gcc,
1375 # so use file chosen by default logic above
1376 thread_file=${target_thread_file}
1379 # Make gthr-default.h if we have a thread file.
1381 if test $thread_file != single; then
1382 rm -f gthr-default.h
1383 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1384 gthread_flags=-DHAVE_GTHR_DEFAULT
1386 AC_SUBST(gthread_flags)
1393 if test x$enable___cxa_atexit = xyes || \
1394 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1395 if test x$host = x$target; then
1397 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1398 # keyed to flag_use_cxa_atexit
1403 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1404 [echo "__cxa_atexit can't be enabled on this target"])
1408 # We can't check for __cxa_atexit when building a cross, so assume
1412 if test x$use_cxa_atexit = xyes; then
1413 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1414 [Define if you want to use __cxa_atexit, rather than atexit, to
1415 register C++ destructors for local statics and global objects.
1416 This is essential for fully standards-compliant handling of
1417 destructors, but requires __cxa_atexit in libc.])
1422 if test x$with_system_libunwind = xyes; then
1423 if test x$host = x$target; then
1424 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1427 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1428 if test x$use_getipinfo = xyes; then
1429 AC_DEFINE(HAVE_GETIPINFO, 1,
1430 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1432 echo "The system unwind library does not support _Unwind_GetIPInfo."
1435 # Look for a file containing extra machine modes.
1436 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1437 extra_modes_file='$(srcdir)'/config/${extra_modes}
1438 AC_SUBST(extra_modes_file)
1439 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1440 [Define to the name of a file containing a list of extra machine modes
1441 for this architecture.])
1444 # Convert extra_options into a form suitable for Makefile use.
1446 for f in $extra_options; do
1447 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1449 AC_SUBST(extra_opt_files)
1451 # auto-host.h is the file containing items generated by autoconf and is
1452 # the first file included by config.h.
1453 # If host=build, it is correct to have bconfig include auto-host.h
1454 # as well. If host!=build, we are in error and need to do more
1455 # work to find out the build config parameters.
1456 if test x$host = x$build
1458 build_auto=auto-host.h
1460 # We create a subdir, then run autoconf in the subdir.
1461 # To prevent recursion we set host and build for the new
1462 # invocation of configure to the build for this invocation
1469 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1470 *) realsrcdir=../${srcdir};;
1472 saved_CFLAGS="${CFLAGS}"
1473 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1474 ${realsrcdir}/configure \
1475 --enable-languages=${enable_languages-all} \
1476 --target=$target_alias --host=$build_alias --build=$build_alias
1477 CFLAGS="${saved_CFLAGS}"
1479 # Extract this setting from the temporary Makefile.
1480 BUILD_DEPMODE=`grep '^CCDEPMODE = ' Makefile | sed -e 's,.* = ,,'`
1482 # We just finished tests for the build machine, so rename
1483 # the file auto-build.h in the gcc directory.
1484 mv auto-host.h ../auto-build.h
1487 build_auto=auto-build.h
1489 AC_SUBST(build_subdir)
1491 tm_file="${tm_file} defaults.h"
1492 tm_p_file="${tm_p_file} tm-preds.h"
1493 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1494 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1495 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1496 # put this back in temporarily.
1497 xm_file="auto-host.h ansidecl.h ${xm_file}"
1504 # Compile in configure arguments.
1505 if test -f configargs.h ; then
1506 # Being re-configured.
1507 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1508 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1510 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1513 # Double all backslashes and backslash all quotes to turn
1514 # gcc_config_arguments into a C string.
1515 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1516 $gcc_config_arguments
1518 gcc_config_arguments_str=`cat conftest.out`
1521 cat > configargs.h <<EOF
1522 /* Generated automatically. */
1523 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1524 static const char thread_model[] = "$thread_file";
1526 static const struct {
1527 const char *name, *value;
1528 } configure_default_options[] = $configure_default_options;
1532 # Internationalization
1533 ZW_GNU_GETTEXT_SISTER_DIR
1535 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1536 # -liconv on the link line twice.
1537 case "$LIBINTL" in *$LIBICONV*)
1541 AC_ARG_ENABLE(secureplt,
1542 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1545 # Windows32 Registry support for specifying GCC installation paths.
1546 AC_ARG_ENABLE(win32-registry,
1547 [ --disable-win32-registry
1548 disable lookup of installation paths in the
1549 Registry on Windows hosts
1550 --enable-win32-registry enable registry lookup (default)
1551 --enable-win32-registry=KEY
1552 use KEY instead of GCC version as the last portion
1553 of the registry key],,)
1556 win32 | pe | cygwin* | mingw32* | uwin*)
1557 if test "x$enable_win32_registry" != xno; then
1558 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1561 if test "x$enable_win32_registry" != xno; then
1562 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1563 [Define to 1 if installation paths should be looked up in the Windows
1564 Registry. Ignored on non-Windows hosts.])
1566 if test "x$enable_win32_registry" != xyes \
1567 && test "x$enable_win32_registry" != x; then
1568 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1569 [Define to be the last component of the Windows registry key under which
1570 to look for installation paths. The full key used will be
1571 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1572 The default is the GCC version number.])
1578 # Get an absolute path to the GCC top-level source directory
1579 holddir=`${PWDCMD-pwd}`
1581 topdir=`${PWDCMD-pwd}`
1584 # Conditionalize the makefile for this host machine.
1586 for f in ${host_xmake_file}
1588 if test -f ${srcdir}/config/$f
1590 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1594 # Conditionalize the makefile for this target machine.
1596 for f in ${tmake_file}
1598 if test -f ${srcdir}/config/$f
1600 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1603 tmake_file="${tmake_file_}"
1605 # This is a terrible hack which will go away some day.
1606 host_cc_for_libada=${CC}
1607 AC_SUBST(host_cc_for_libada)
1609 out_object_file=`basename $out_file .c`.o
1611 tm_file_list="options.h"
1612 tm_include_list="options.h"
1613 for f in $tm_file; do
1616 f=`echo $f | sed 's/^..//'`
1617 tm_file_list="${tm_file_list} $f"
1618 tm_include_list="${tm_include_list} $f"
1621 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1622 tm_include_list="${tm_include_list} $f"
1625 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1626 tm_include_list="${tm_include_list} config/$f"
1633 for f in $tm_p_file; do
1636 tm_p_file_list="${tm_p_file_list} $f"
1637 tm_p_include_list="${tm_p_include_list} $f"
1640 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1641 tm_p_include_list="${tm_p_include_list} config/$f"
1647 for f in $xm_file; do
1650 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1651 xm_include_list="${xm_include_list} $f"
1654 xm_file_list="${xm_file_list} $f"
1655 xm_include_list="${xm_include_list} $f"
1658 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1659 xm_include_list="${xm_include_list} config/$f"
1665 host_xm_include_list=
1666 for f in $host_xm_file; do
1669 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1670 host_xm_include_list="${host_xm_include_list} $f"
1673 host_xm_file_list="${host_xm_file_list} $f"
1674 host_xm_include_list="${host_xm_include_list} $f"
1677 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1678 host_xm_include_list="${host_xm_include_list} config/$f"
1684 for f in $build_xm_file; do
1687 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1688 build_xm_include_list="${build_xm_include_list} $f"
1690 auto-build.h | auto-host.h )
1691 build_xm_file_list="${build_xm_file_list} $f"
1692 build_xm_include_list="${build_xm_include_list} $f"
1695 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1696 build_xm_include_list="${build_xm_include_list} config/$f"
1701 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1702 # cross-compiler which does not use the native headers and libraries.
1703 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1704 CROSS= AC_SUBST(CROSS)
1705 ALL=all.internal AC_SUBST(ALL)
1706 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1708 if test "x$with_build_sysroot" != x; then
1709 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1711 # This value is used, even on a native system, because
1712 # CROSS_SYSTEM_HEADER_DIR is just
1713 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1714 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1717 if test x$host != x$target
1719 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1721 SYSTEM_HEADER_DIR=$build_system_header_dir
1722 case "$host","$target" in
1723 # Darwin crosses can use the host system's libraries and headers,
1724 # because of the fat library support. Of course, it must be the
1725 # same version of Darwin on both sides. Allow the user to
1726 # just say --target=foo-darwin without a version number to mean
1727 # "the version on this system".
1728 *-*-darwin*,*-*-darwin*)
1729 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1730 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1731 if test $hostos = $targetos -o $targetos = darwin ; then
1733 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1738 i?86-*-*,x86_64-*-* \
1739 | powerpc*-*-*,powerpc64*-*-*)
1740 CROSS="$CROSS -DNATIVE_CROSS" ;;
1742 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1743 SYSTEM_HEADER_DIR=$build_system_header_dir
1746 # If this is a cross-compiler that does not
1747 # have its own set of headers then define
1750 # If this is using newlib, without having the headers available now,
1751 # then define inhibit_libc in LIBGCC2_CFLAGS.
1752 # This prevents libgcc2 from containing any code which requires libc
1755 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1756 test x$with_newlib = xyes ; } &&
1757 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1760 AC_SUBST(inhibit_libc)
1762 # When building gcc with a cross-compiler, we need to adjust things so
1763 # that the generator programs are still built with the native compiler.
1764 # Also, we cannot run fixincludes or fix-header.
1766 # These are the normal (build=host) settings:
1767 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1768 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1769 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1771 # Possibly disable fixproto, on a per-target basis.
1772 case ${use_fixproto} in
1777 STMP_FIXPROTO=stmp-fixproto
1780 AC_SUBST(STMP_FIXPROTO)
1782 # And these apply if build != host, or we are generating coverage data
1783 if test x$build != x$host || test "x$coverage_flags" != x
1785 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1787 if test "x$TARGET_SYSTEM_ROOT" = x; then
1788 if test "x$STMP_FIXPROTO" != x; then
1789 STMP_FIXPROTO=stmp-install-fixproto
1794 # Expand extra_headers to include complete path.
1795 # This substitutes for lots of t-* files.
1797 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1798 for file in ${extra_headers} ; do
1799 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1802 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1803 if test x"$use_gcc_tgmath" = xyes
1804 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1807 # Define collect2 in Makefile.
1808 case $host_can_use_collect2 in
1810 *) collect2='collect2$(exeext)' ;;
1812 AC_SUBST([collect2])
1814 # Add a definition of USE_COLLECT2 if system wants one.
1815 case $use_collect2 in
1816 no) use_collect2= ;;
1819 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1820 xm_defines="${xm_defines} USE_COLLECT2"
1821 case $host_can_use_collect2 in
1823 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1829 # ---------------------------
1830 # Assembler & linker features
1831 # ---------------------------
1833 # Identify the assembler which will work hand-in-glove with the newly
1834 # built GCC, so that we can examine its features. This is the assembler
1835 # which will be driven by the driver program.
1837 # If build != host, and we aren't building gas in-tree, we identify a
1838 # build->target assembler and hope that it will have the same features
1839 # as the host->target assembler we'll be using.
1840 gcc_cv_gas_major_version=
1841 gcc_cv_gas_minor_version=
1842 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1844 m4_pattern_allow([AS_FOR_TARGET])dnl
1845 AS_VAR_SET_IF(gcc_cv_as,, [
1846 if test -x "$DEFAULT_ASSEMBLER"; then
1847 gcc_cv_as="$DEFAULT_ASSEMBLER"
1848 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1849 && test -f ../gas/Makefile \
1850 && test x$build = x$host; then
1851 gcc_cv_as=../gas/as-new$build_exeext
1852 elif test -x as$build_exeext; then
1853 # Build using assembler in the current directory.
1854 gcc_cv_as=./as$build_exeext
1855 elif test -x $AS_FOR_TARGET; then
1856 gcc_cv_as="$AS_FOR_TARGET"
1858 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1861 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1862 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1863 case "$ORIGINAL_AS_FOR_TARGET" in
1864 ./as | ./as$build_exeext) ;;
1865 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1868 AC_MSG_CHECKING(what assembler to use)
1869 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1870 # Single tree build which includes gas. We want to prefer it
1871 # over whatever linker top-level may have detected, since
1872 # we'll use what we're building after installation anyway.
1873 AC_MSG_RESULT(newly built gas)
1875 _gcc_COMPUTE_GAS_VERSION
1876 in_tree_gas_is_elf=no
1877 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1878 || (grep 'obj_format = multi' ../gas/Makefile \
1879 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1881 in_tree_gas_is_elf=yes
1884 AC_MSG_RESULT($gcc_cv_as)
1888 # Identify the linker which will work hand-in-glove with the newly
1889 # built GCC, so that we can examine its features. This is the linker
1890 # which will be driven by the driver program.
1892 # If build != host, and we aren't building gas in-tree, we identify a
1893 # build->target linker and hope that it will have the same features
1894 # as the host->target linker we'll be using.
1895 gcc_cv_gld_major_version=
1896 gcc_cv_gld_minor_version=
1897 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1898 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1900 AS_VAR_SET_IF(gcc_cv_ld,, [
1901 if test -x "$DEFAULT_LINKER"; then
1902 gcc_cv_ld="$DEFAULT_LINKER"
1903 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1904 && test -f ../ld/Makefile \
1905 && test x$build = x$host; then
1906 gcc_cv_ld=../ld/ld-new$build_exeext
1907 elif test -x collect-ld$build_exeext; then
1908 # Build using linker in the current directory.
1909 gcc_cv_ld=./collect-ld$build_exeext
1910 elif test -x $LD_FOR_TARGET; then
1911 gcc_cv_ld="$LD_FOR_TARGET"
1913 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1916 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1917 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1918 case "$ORIGINAL_LD_FOR_TARGET" in
1919 ./collect-ld | ./collect-ld$build_exeext) ;;
1920 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1923 AC_MSG_CHECKING(what linker to use)
1924 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1925 # Single tree build which includes ld. We want to prefer it
1926 # over whatever linker top-level may have detected, since
1927 # we'll use what we're building after installation anyway.
1928 AC_MSG_RESULT(newly built ld)
1930 in_tree_ld_is_elf=no
1931 if (grep 'EMUL = .*elf' ../ld/Makefile \
1932 || grep 'EMUL = .*linux' ../ld/Makefile \
1933 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1934 in_tree_ld_is_elf=yes
1936 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
1939 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1940 if test x$gcc_cv_gld_version != x; then
1944 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1945 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1948 AC_MSG_RESULT($gcc_cv_ld)
1952 # Figure out what nm we will be using.
1953 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1954 AS_VAR_SET_IF(gcc_cv_nm,, [
1955 if test -f $gcc_cv_binutils_srcdir/configure.in \
1956 && test -f ../binutils/Makefile \
1957 && test x$build = x$host; then
1958 gcc_cv_nm=../binutils/nm-new$build_exeext
1959 elif test -x nm$build_exeext; then
1960 gcc_cv_nm=./nm$build_exeext
1961 elif test -x $NM_FOR_TARGET; then
1962 gcc_cv_nm="$NM_FOR_TARGET"
1964 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1967 AC_MSG_CHECKING(what nm to use)
1968 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1969 # Single tree build which includes binutils.
1970 AC_MSG_RESULT(newly built nm)
1973 AC_MSG_RESULT($gcc_cv_nm)
1977 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1978 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1979 case "$ORIGINAL_NM_FOR_TARGET" in
1980 ./nm | ./nm$build_exeext) ;;
1981 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1985 # Figure out what objdump we will be using.
1986 AS_VAR_SET_IF(gcc_cv_objdump,, [
1987 if test -f $gcc_cv_binutils_srcdir/configure.in \
1988 && test -f ../binutils/Makefile \
1989 && test x$build = x$host; then
1990 # Single tree build which includes binutils.
1991 gcc_cv_objdump=../binutils/objdump$build_exeext
1992 elif test -x objdump$build_exeext; then
1993 gcc_cv_objdump=./objdump$build_exeext
1994 elif test -x $OBJDUMP_FOR_TARGET; then
1995 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1997 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2000 AC_MSG_CHECKING(what objdump to use)
2001 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2002 # Single tree build which includes binutils.
2003 AC_MSG_RESULT(newly built objdump)
2004 elif test x$gcc_cv_objdump = x; then
2005 AC_MSG_RESULT(not found)
2007 AC_MSG_RESULT($gcc_cv_objdump)
2010 # Figure out what assembler alignment features are present.
2011 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2015 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2016 [Define if your assembler supports .balign and .p2align.])])
2018 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2021 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2022 [Define if your assembler supports specifying the maximum number
2023 of bytes to skip when using the GAS .p2align command.])])
2025 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2028 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2029 [Define if your assembler supports .literal16.])])
2031 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2033 [conftest_label1: .word 0
2035 conftest_label2: .word 0
2037 [if test x$gcc_cv_nm != x; then
2038 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2039 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2040 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2042 else gcc_cv_as_subsection_m1=yes
2044 rm -f conftest.nm1 conftest.nm2
2046 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2047 [Define if your assembler supports .subsection and .subsection -1 starts
2048 emitting at the beginning of your section.])])
2050 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2053 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2055 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2057 [ .weakref foobar, barfnot],,
2058 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2060 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2063 .NSUBSPA $CODE$,COMDAT],,
2064 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2066 # .hidden needs to be supported in both the assembler and the linker,
2067 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2068 # This is irritatingly difficult to feature test for; we have to check the
2069 # date string after the version number. If we've got an in-tree
2070 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2072 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2073 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2078 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2079 [if test $in_tree_ld = yes ; then
2081 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2082 && test $in_tree_ld_is_elf = yes; then
2083 gcc_cv_ld_hidden=yes
2086 gcc_cv_ld_hidden=yes
2087 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2088 if echo "$ld_ver" | grep GNU > /dev/null; then
2090 ld_vers=`echo $ld_ver | sed -n \
2091 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2092 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2093 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2094 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2095 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2096 if test 0"$ld_date" -lt 20020404; then
2097 if test -n "$ld_date"; then
2098 # If there was date string, but was earlier than 2002-04-04, fail
2100 elif test -z "$ld_vers"; then
2101 # If there was no date string nor ld version number, something is wrong
2104 test -z "$ld_vers_patch" && ld_vers_patch=0
2105 if test "$ld_vers_major" -lt 2; then
2107 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2108 gcc_cv_ld_hidden="no"
2109 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2117 hppa64*-*-hpux* | ia64*-*-hpux*)
2118 gcc_cv_ld_hidden=yes
2126 libgcc_visibility=no
2127 AC_SUBST(libgcc_visibility)
2128 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2129 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2130 libgcc_visibility=yes
2131 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2132 [Define if your assembler and linker support .hidden.])
2135 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2136 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2144 [# GAS versions before 2.11 do not support uleb128,
2145 # despite appearing to.
2146 # ??? There exists an elf-specific test that will crash
2147 # the assembler. Perhaps it's better to figure out whether
2148 # arbitrary sections are supported and try the test.
2149 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2150 if echo "$as_ver" | grep GNU > /dev/null; then
2152 as_vers=`echo $as_ver | sed -n \
2153 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2154 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2155 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2157 if test $as_major -eq 2 && test $as_minor -lt 11
2159 else gcc_cv_as_leb128=yes
2162 [AC_DEFINE(HAVE_AS_LEB128, 1,
2163 [Define if your assembler supports .sleb128 and .uleb128.])])
2165 # GAS versions up to and including 2.11.0 may mis-optimize
2167 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2175 .section .eh_frame,"aw",@progbits
2177 .4byte .LECIE1-.LSCIE1
2191 .4byte .LEFDE1-.LASFDE1
2193 .4byte .LASFDE1-__FRAME_BEGIN__
2201 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2202 cat > conftest.lit <<EOF
2203 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2204 0010 01000000 12000000 18000000 00000000 ................
2205 0020 08000000 04080000 0044 .........D @&t@
2207 cat > conftest.big <<EOF
2208 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2209 0010 00000001 00000012 00000018 00000000 ................
2210 0020 00000008 04000000 0844 .........D @&t@
2212 # If the assembler didn't choke, and we can objdump,
2213 # and we got the correct data, then succeed.
2214 # The text in the here-document typically retains its unix-style line
2215 # endings, while the output of objdump will use host line endings.
2216 # Therefore, use diff -b for the comparisons.
2217 if test x$gcc_cv_objdump != x \
2218 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2219 | tail -3 > conftest.got \
2220 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2221 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2223 gcc_cv_as_eh_frame=yes
2224 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2225 gcc_cv_as_eh_frame=buggy
2227 # Uh oh, what do we do now?
2228 gcc_cv_as_eh_frame=no
2231 if test $gcc_cv_as_eh_frame = buggy; then
2232 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2233 [Define if your assembler mis-optimizes .eh_frame data.])
2236 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2237 [elf,2,12,0], [--fatal-warnings],
2238 [.section .rodata.str, "aMS", @progbits, 1])
2239 if test $gcc_cv_as_shf_merge = no; then
2240 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2241 [elf,2,12,0], [--fatal-warnings],
2242 [.section .rodata.str, "aMS", %progbits, 1])
2244 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2245 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2246 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2248 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2249 [elf,2,16,0], [--fatal-warnings],
2250 [.section .text,"axG",@progbits,.foo,comdat])
2251 if test $gcc_cv_as_comdat_group = yes; then
2252 gcc_cv_as_comdat_group_percent=no
2254 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2255 [elf,2,16,0], [--fatal-warnings],
2256 [.section .text,"axG",%progbits,.foo,comdat])
2258 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2260 if test 0"$ld_date" -lt 20050308; then
2261 if test -n "$ld_date"; then
2262 # If there was date string, but was earlier than 2005-03-08, fail
2264 elif test "$ld_vers_major" -lt 2; then
2266 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2271 # assume linkers other than GNU ld don't support COMDAT group
2274 if test $comdat_group = no; then
2275 gcc_cv_as_comdat_group=no
2276 gcc_cv_as_comdat_group_percent=no
2278 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2279 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2280 [Define 0/1 if your assembler and linker support COMDAT groups.])
2282 # Thread-local storage - the check is heavily parametrized.
2291 .section ".tdata","awT",@progbits
2294 ldq $27,__tls_get_addr($29) !literal!1
2295 lda $16,foo($29) !tlsgd!1
2296 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2297 ldq $27,__tls_get_addr($29) !literal!2
2298 lda $16,foo($29) !tlsldm!2
2299 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2300 ldq $1,foo($29) !gotdtprel
2301 ldah $2,foo($29) !dtprelhi
2302 lda $3,foo($2) !dtprello
2303 lda $4,foo($29) !dtprel
2304 ldq $1,foo($29) !gottprel
2305 ldah $2,foo($29) !tprelhi
2306 lda $3,foo($2) !tprello
2307 lda $4,foo($29) !tprel'
2310 tls_as_opt=--fatal-warnings
2314 .section ".tdata","awT",@progbits
2326 .section ".tdata","awT",@progbits
2330 addil LT%foo-$tls_gdidx$,gp
2331 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2334 addil LT%foo-$tls_ldidx$,gp
2336 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2337 addil LR%foo-$tls_dtpoff$,%ret0
2338 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2340 addil LT%foo-$tls_ieoff$,gp
2341 ldw RT%foo-$tls_ieoff$(%r1),%t2
2344 addil LR%foo-$tls_leoff$,%t1
2345 ldo RR%foo-$tls_leoff$(%r1),%t2'
2348 tls_as_opt=--fatal-warnings
2352 .section ".tdata","awT",%progbits
2365 .section ".tdata","awT",@progbits
2369 leal foo@TLSGD(,%ebx,1), %eax
2370 leal foo@TLSLDM(%ebx), %eax
2371 leal foo@DTPOFF(%eax), %edx
2372 movl foo@GOTTPOFF(%ebx), %eax
2373 subl foo@GOTTPOFF(%ebx), %eax
2374 addl foo@GOTNTPOFF(%ebx), %eax
2375 movl foo@INDNTPOFF, %eax
2376 movl $foo@TPOFF, %eax
2377 subl $foo@TPOFF, %eax
2378 leal foo@NTPOFF(%ecx), %eax'
2381 tls_as_opt=--fatal-warnings
2385 .section ".tdata","awT",@progbits
2389 leaq foo@TLSGD(%rip), %rdi
2390 leaq foo@TLSLD(%rip), %rdi
2391 leaq foo@DTPOFF(%rax), %rdx
2392 movq foo@GOTTPOFF(%rip), %rax
2393 movq $foo@TPOFF, %rax'
2396 tls_as_opt=--fatal-warnings
2400 .section ".tdata","awT",@progbits
2403 addl r16 = @ltoff(@dtpmod(foo#)), gp
2404 addl r17 = @ltoff(@dtprel(foo#)), gp
2405 addl r18 = @ltoff(@tprel(foo#)), gp
2406 addl r19 = @dtprel(foo#), gp
2407 adds r21 = @dtprel(foo#), r13
2408 movl r23 = @dtprel(foo#)
2409 addl r20 = @tprel(foo#), gp
2410 adds r22 = @tprel(foo#), r13
2411 movl r24 = @tprel(foo#)'
2414 tls_as_opt=--fatal-warnings
2418 .section .tdata,"awT",@progbits
2422 addiu $4, $28, %tlsgd(x)
2423 addiu $4, $28, %tlsldm(x)
2424 lui $4, %dtprel_hi(x)
2425 addiu $4, $4, %dtprel_lo(x)
2426 lw $4, %gottprel(x)($28)
2427 lui $4, %tprel_hi(x)
2428 addiu $4, $4, %tprel_lo(x)'
2431 tls_as_opt='-32 --fatal-warnings'
2435 .section ".tdata","awT",@progbits
2443 addi 3,31,ld0@got@tlsgd
2445 addi 3,31,x1@got@tlsld
2448 addis 9,3,x2@dtprel@ha
2449 addi 9,9,x2@dtprel@l
2450 lwz 9,x3@got@tprel(31)
2453 addis 9,2,x2@tprel@ha
2454 addi 9,9,x2@tprel@l'
2457 tls_as_opt="-a32 --fatal-warnings"
2461 .section ".tdata","awT",@progbits
2469 addi 3,2,ld0@got@tlsgd
2475 addi 3,2,x1@got@tlsld
2481 addis 9,3,x2@dtprel@ha
2482 addi 9,9,x2@dtprel@l
2485 ld 9,x3@got@dtprel(2)
2491 tls_as_opt="-a64 --fatal-warnings"
2495 .section ".tdata","awT",@progbits
2504 l %r1,foo@GOTNTPOFF(%r12)
2505 l %r1,0(%r1):tls_load:foo
2506 bas %r14,0(%r1,%r13):tls_gdcall:foo
2507 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2510 tls_as_opt="-m31 --fatal-warnings"
2514 .section ".tdata","awT",@progbits
2522 lg %r1,foo@GOTNTPOFF(%r12)
2523 larl %r1,foo@INDNTPOFF
2524 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2525 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2528 tls_as_opt="-m64 -Aesame --fatal-warnings"
2530 sh-*-* | sh[34]-*-*)
2532 .section ".tdata","awT",@progbits
2542 tls_as_opt=--fatal-warnings
2546 sparc*-sun-solaris2.[56789]*)
2547 # TLS was introduced in the Solaris 9 4/04 release but
2548 # we do not enable it by default on Solaris 9 either.
2549 if test "x$enable_tls" = xyes ; then
2555 sparc*-sun-solaris2.*)
2562 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2564 .section ".tdata",#alloc,#write,#tls
2567 sethi %tgd_hi22(foo), %o0
2568 add %o0, %tgd_lo10(foo), %o1
2569 add %l7, %o1, %o0, %tgd_add(foo)
2570 call __tls_get_addr, %tgd_call(foo)
2571 sethi %tldm_hi22(foo), %l1
2572 add %l1, %tldm_lo10(foo), %l2
2573 add %l7, %l2, %o0, %tldm_add(foo)
2574 call __tls_get_addr, %tldm_call(foo)
2575 sethi %tldo_hix22(foo), %l3
2576 xor %l3, %tldo_lox10(foo), %l4
2577 add %o0, %l4, %l5, %tldo_add(foo)
2578 sethi %tie_hi22(foo), %o3
2579 add %o3, %tie_lo10(foo), %o3
2580 ld [%l7 + %o3], %o2, %tie_ld(foo)
2581 add %g7, %o2, %o4, %tie_add(foo)
2582 sethi %tle_hix22(foo), %l1
2583 xor %l1, %tle_lox10(foo), %o5
2584 ld [%g7 + %o5], %o1'
2589 .section ".tdata","awT",@progbits
2592 sethi %tgd_hi22(foo), %o0
2593 add %o0, %tgd_lo10(foo), %o1
2594 add %l7, %o1, %o0, %tgd_add(foo)
2595 call __tls_get_addr, %tgd_call(foo)
2596 sethi %tldm_hi22(foo), %l1
2597 add %l1, %tldm_lo10(foo), %l2
2598 add %l7, %l2, %o0, %tldm_add(foo)
2599 call __tls_get_addr, %tldm_call(foo)
2600 sethi %tldo_hix22(foo), %l3
2601 xor %l3, %tldo_lox10(foo), %l4
2602 add %o0, %l4, %l5, %tldo_add(foo)
2603 sethi %tie_hi22(foo), %o3
2604 add %o3, %tie_lo10(foo), %o3
2605 ld [%l7 + %o3], %o2, %tie_ld(foo)
2606 add %g7, %o2, %o4, %tie_add(foo)
2607 sethi %tle_hix22(foo), %l1
2608 xor %l1, %tle_lox10(foo), %o5
2609 ld [%g7 + %o5], %o1'
2612 tls_as_opt="-32 --fatal-warnings"
2618 if test "x$enable_tls" = xno ; then
2619 : # TLS explicitly disabled.
2620 elif test "x$enable_tls" = xyes ; then
2621 set_have_as_tls=yes # TLS explicitly enabled.
2622 elif test -z "$tls_first_major"; then
2623 : # If we don't have a check, assume no support.
2625 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2626 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2627 [set_have_as_tls=yes])
2629 if test $set_have_as_tls = yes ; then
2630 AC_DEFINE(HAVE_AS_TLS, 1,
2631 [Define if your assembler supports thread-local storage.])
2634 # Target-specific assembler checks.
2636 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2637 gcc_cv_ld_static_dynamic=no
2638 if test $in_tree_ld = yes ; then
2639 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2640 gcc_cv_ld_static_dynamic=yes
2642 elif test x$gcc_cv_ld != x; then
2643 # Check if linker supports -Bstatic/-Bdynamic option
2644 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2645 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2646 gcc_cv_ld_static_dynamic=yes
2649 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2650 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2651 [Define if your linker supports -Bstatic/-Bdynamic option.])
2653 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2655 if test x"$demangler_in_ld" = xyes; then
2656 AC_MSG_CHECKING(linker --demangle support)
2657 gcc_cv_ld_demangle=no
2658 if test $in_tree_ld = yes; then
2659 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2660 gcc_cv_ld_demangle=yes
2662 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2663 # Check if the GNU linker supports --demangle option
2664 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2665 gcc_cv_ld_demangle=yes
2668 if test x"$gcc_cv_ld_demangle" = xyes; then
2669 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2670 [Define if your linker supports --demangle option.])
2672 AC_MSG_RESULT($gcc_cv_ld_demangle)
2676 # All TARGET_ABI_OSF targets.
2677 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2678 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2679 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2682 extbl $3, $2, $3 !lituse_bytoff!1
2683 ldq $2, a($29) !literal!1
2684 ldq $4, b($29) !literal!2
2685 ldq_u $3, 0($2) !lituse_base!1
2686 ldq $27, f($29) !literal!5
2687 jsr $26, ($27), f !lituse_jsr!5
2688 ldah $29, 0($26) !gpdisp!3
2689 lda $0, c($29) !gprel
2690 ldah $1, d($29) !gprelhigh
2691 lda $1, d($1) !gprellow
2692 lda $29, 0($29) !gpdisp!3],,
2693 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2694 [Define if your assembler supports explicit relocations.])])
2695 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2696 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2699 ldq $27, a($29) !literal!1
2700 jsr $26, ($27), a !lituse_jsrdirect!1],,
2701 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2702 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2706 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2707 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2708 [-no-mul-bug-abort], [.text],,
2709 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2710 [Define if your assembler supports the -no-mul-bug-abort option.])])
2714 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2715 [.register %g2, #scratch],,
2716 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2717 [Define if your assembler supports .register.])])
2719 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2721 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2722 [Define if your assembler supports -relax option.])])
2724 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2725 gcc_cv_as_sparc_ua_pcrel,,
2733 .uaword %r_disp32(foo)],
2734 [if test x$gcc_cv_ld != x \
2735 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2736 gcc_cv_as_sparc_ua_pcrel=yes
2739 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2740 [Define if your assembler and linker support unaligned PC relative relocs.])
2742 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2743 gcc_cv_as_sparc_ua_pcrel_hidden,,
2748 .uaword %r_disp32(foo)
2749 .byte 0x32, 0x33, 0x34
2754 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2755 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2756 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2757 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2758 if $gcc_cv_objdump -R conftest 2> /dev/null \
2759 | grep 'DISP32' > /dev/null 2>&1; then
2762 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2766 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2767 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2768 ]) # unaligned pcrel relocs
2770 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2771 gcc_cv_as_sparc_offsetable_lo10,,
2774 or %g1, %lo(ab) + 12, %g1
2775 or %g1, %lo(ab + 12), %g1],
2776 [if test x$gcc_cv_objdump != x \
2777 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2778 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2779 gcc_cv_as_sparc_offsetable_lo10=yes
2781 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2782 [Define if your assembler supports offsetable %lo().])])
2786 i[34567]86-*-* | x86_64-*-*)
2789 cygwin* | pe | mingw32*)
2790 # Used for DWARF 2 in PE
2791 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2792 gcc_cv_as_ix86_pe_secrel32,
2798 [if test x$gcc_cv_ld != x \
2799 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2800 gcc_cv_as_ix86_pe_secrel32=yes
2803 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2804 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2808 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2809 gcc_cv_as_ix86_filds_fists,
2810 [2,9,0],, [filds mem; fists mem],,
2811 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2812 [Define if your assembler uses the new HImode fild and fist notation.])])
2814 gcc_GAS_CHECK_FEATURE([cmov syntax],
2815 gcc_cv_as_ix86_cmov_sun_syntax,,,
2816 [cmovl.l %edx, %eax],,
2817 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2818 [Define if your assembler supports the Sun syntax for cmov.])])
2820 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2821 gcc_cv_as_ix86_ffreep,,,
2823 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2824 [Define if your assembler supports the ffreep mnemonic.])])
2826 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2827 gcc_cv_as_ix86_sahf,,,
2829 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2830 [Define if your assembler supports the sahf mnemonic.])])
2832 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2833 gcc_cv_as_ix86_diff_sect_delta,,,
2841 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2842 [Define if your assembler supports the subtraction of symbols in different sections.])])
2844 # This one is used unconditionally by i386.[ch]; it is to be defined
2845 # to 1 if the feature is present, 0 otherwise.
2846 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2847 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2853 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2854 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2855 [Define true if the assembler supports '.long foo@GOTOFF'.])
2859 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2860 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2862 addl r15 = @ltoffx(x#), gp
2864 ld8.mov r16 = [[r15]], x#],,
2865 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2866 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2872 *-*-aix*) conftest_s=' .machine "pwr5"
2876 gcc_GAS_CHECK_FEATURE([.machine directive support],
2877 gcc_cv_as_machine_directive,,,
2878 [ .machine ppc7400])
2879 if test x$gcc_cv_as_machine_directive != xyes; then
2880 echo "*** This target requires an assembler supporting \".machine\"" >&2
2881 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2882 test x$build = x$target && exit 1
2886 *) conftest_s=' .machine power4
2891 gcc_GAS_CHECK_FEATURE([mfcr field support],
2892 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2894 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2895 [Define if your assembler supports mfcr field.])])
2898 *-*-aix*) conftest_s=' .machine "pwr5"
2901 *) conftest_s=' .machine power5
2906 gcc_GAS_CHECK_FEATURE([popcntb support],
2907 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2909 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2910 [Define if your assembler supports popcntb field.])])
2913 *-*-aix*) conftest_s=' .machine "pwr5x"
2916 *) conftest_s=' .machine power5
2921 gcc_GAS_CHECK_FEATURE([fp round support],
2922 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2924 [AC_DEFINE(HAVE_AS_FPRND, 1,
2925 [Define if your assembler supports fprnd.])])
2928 *-*-aix*) conftest_s=' .machine "pwr6"
2931 *) conftest_s=' .machine power6
2936 gcc_GAS_CHECK_FEATURE([move fp gpr support],
2937 gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
2939 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
2940 [Define if your assembler supports mffgpr and mftgpr.])])
2943 *-*-aix*) conftest_s=' .csect .text[[PR]]
2945 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2949 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2950 *) conftest_s=' .text
2952 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2955 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2956 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2958 [AC_DEFINE(HAVE_AS_REL16, 1,
2959 [Define if your assembler supports R_PPC_REL16 relocs.])])
2962 *-*-aix*) conftest_s=' .machine "pwr6"
2965 *) conftest_s=' .machine power6
2970 gcc_GAS_CHECK_FEATURE([compare bytes support],
2971 gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
2973 [AC_DEFINE(HAVE_AS_CMPB, 1,
2974 [Define if your assembler supports cmpb.])])
2977 *-*-aix*) conftest_s=' .machine "pwr6"
2980 *) conftest_s=' .machine power6
2985 gcc_GAS_CHECK_FEATURE([decimal float support],
2986 gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
2988 [AC_DEFINE(HAVE_AS_DFP, 1,
2989 [Define if your assembler supports DFP instructions.])])
2991 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
2992 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
2993 [.gnu_attribute 4,1],,
2994 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
2995 [Define if your assembler supports .gnu_attribute.])])
2999 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3000 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3001 [ lw $4,%gp_rel(foo)($4)],,
3002 [if test x$target_cpu_default = x
3003 then target_cpu_default=MASK_EXPLICIT_RELOCS
3004 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3006 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3007 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3008 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3009 [Define if the assembler understands -mno-shared.])])
3011 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3012 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3013 [.gnu_attribute 4,1],,
3014 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3015 [Define if your assembler supports .gnu_attribute.])])
3017 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3018 gcc_cv_as_mips_dtprelword, [2,18,0],,
3019 [.section .tdata,"awT",@progbits
3023 .dtprelword x+0x8000],,
3024 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3025 [Define if your assembler supports .dtprelword.])])
3029 # Mips and HP-UX need the GNU assembler.
3030 # Linux on IA64 might be able to use the Intel assembler.
3033 mips*-*-* | *-*-hpux* )
3034 if test x$gas_flag = xyes \
3035 || test x"$host" != x"$build" \
3036 || test ! -x "$gcc_cv_as" \
3037 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3040 echo "*** This configuration requires the GNU assembler" >&2
3046 # ??? Not all targets support dwarf2 debug_line, even within a version
3047 # of gas. Moreover, we need to emit a valid instruction to trigger any
3048 # info to the output file. So, as supported targets are added to gas 2.11,
3049 # add some instruction here to (also) show we expect this might work.
3050 # ??? Once 2.11 is released, probably need to add first known working
3051 # version to the per-target configury.
3053 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3054 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
3055 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-* | spu-*-*)
3058 ia64*-*-* | s390*-*-*)
3065 if test x"$insn" != x; then
3067 .file 1 \"conftest.s\"
3070 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3071 gcc_cv_as_dwarf2_debug_line,
3072 [elf,2,11,0],, [$conftest_s],
3073 [if test x$gcc_cv_objdump != x \
3074 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3075 | grep debug_line > /dev/null 2>&1; then
3076 gcc_cv_as_dwarf2_debug_line=yes
3079 # The .debug_line file table must be in the exact order that
3080 # we specified the files, since these indices are also used
3081 # by DW_AT_decl_file. Approximate this test by testing if
3082 # the assembler bitches if the same index is assigned twice.
3083 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3084 gcc_cv_as_dwarf2_file_buggy,,,
3088 if test $gcc_cv_as_dwarf2_debug_line = yes \
3089 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3090 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3091 [Define if your assembler supports dwarf2 .file/.loc directives,
3092 and preserves file table indices exactly as given.])
3095 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3096 gcc_cv_as_gdwarf2_flag,
3097 [elf,2,11,0], [--gdwarf2], [$insn],,
3098 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3099 [Define if your assembler supports the --gdwarf2 option.])])
3101 gcc_GAS_CHECK_FEATURE([--gstabs option],
3102 gcc_cv_as_gstabs_flag,
3103 [elf,2,11,0], [--gstabs], [$insn],
3104 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3105 # and warns about it, but still exits successfully. So check for
3107 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3109 else gcc_cv_as_gstabs_flag=yes
3111 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3112 [Define if your assembler supports the --gstabs option.])])
3114 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3115 gcc_cv_as_debug_prefix_map_flag,
3116 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3117 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3118 [Define if your assembler supports the --debug-prefix-map option.])])
3121 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3122 [gcc_cv_as_line_zero],
3123 [gcc_cv_as_line_zero=no
3124 if test $in_tree_gas = yes; then
3125 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3126 elif test "x$gcc_cv_as" != x; then
3127 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3128 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3129 test "x`cat conftest.out`" = x
3131 gcc_cv_as_line_zero=yes
3133 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3134 cat conftest.s >&AS_MESSAGE_LOG_FD
3135 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3136 cat conftest.out >&AS_MESSAGE_LOG_FD
3138 rm -f conftest.o conftest.s conftest.out
3140 if test "x$gcc_cv_as_line_zero" = xyes; then
3141 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3142 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3145 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3146 gcc_cv_ld_ro_rw_mix=unknown
3147 if test $in_tree_ld = yes ; then
3148 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3149 && test $in_tree_ld_is_elf = yes; then
3150 gcc_cv_ld_ro_rw_mix=read-write
3152 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3153 echo '.section myfoosect, "a"' > conftest1.s
3154 echo '.section myfoosect, "aw"' > conftest2.s
3155 echo '.byte 1' >> conftest2.s
3156 echo '.section myfoosect, "a"' > conftest3.s
3157 echo '.byte 0' >> conftest3.s
3158 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3159 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3160 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3161 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3162 conftest2.o conftest3.o > /dev/null 2>&1; then
3163 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3164 | sed -e '/myfoosect/!d' -e N`
3165 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3166 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3167 gcc_cv_ld_ro_rw_mix=read-only
3169 gcc_cv_ld_ro_rw_mix=read-write
3174 rm -f conftest.* conftest[123].*
3177 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3178 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3179 [Define if your linker links a mix of read-only
3180 and read-write sections into a read-write section.])
3182 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3184 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3185 gcc_cv_ld_eh_frame_hdr=no
3186 if test $in_tree_ld = yes ; then
3187 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3188 && test $in_tree_ld_is_elf = yes; then
3189 gcc_cv_ld_eh_frame_hdr=yes
3191 elif test x$gcc_cv_ld != x; then
3192 # Check if linker supports --eh-frame-hdr option
3193 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3194 gcc_cv_ld_eh_frame_hdr=yes
3197 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3198 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3199 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3200 [Define if your linker supports --eh-frame-hdr option.])
3202 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3204 AC_MSG_CHECKING(linker position independent executable support)
3206 if test $in_tree_ld = yes ; then
3207 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3208 && test $in_tree_ld_is_elf = yes; then
3211 elif test x$gcc_cv_ld != x; then
3212 # Check if linker supports -pie option
3213 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3217 if test x"$gcc_cv_ld_pie" = xyes; then
3218 AC_DEFINE(HAVE_LD_PIE, 1,
3219 [Define if your linker supports -pie option.])
3221 AC_MSG_RESULT($gcc_cv_ld_pie)
3223 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3224 gcc_cv_ld_eh_gc_sections=no
3225 if test $in_tree_ld = yes ; then
3226 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3227 && test $in_tree_ld_is_elf = yes; then
3228 gcc_cv_ld_eh_gc_sections=yes
3230 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3231 cat > conftest.s <<EOF
3234 .type _start, @function
3237 .size _start, .-_start
3238 .section .text.foo,"ax",@progbits
3239 .type foo, @function
3243 .section .gcc_except_table.foo,"a",@progbits
3246 .section .eh_frame,"a",@progbits
3249 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3250 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3251 | grep "gc-sections option ignored" > /dev/null; then
3252 gcc_cv_ld_eh_gc_sections=no
3253 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3254 gcc_cv_ld_eh_gc_sections=yes
3255 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3256 if test x$gcc_cv_as_comdat_group != xyes; then
3257 gcc_cv_ld_eh_gc_sections=no
3258 cat > conftest.s <<EOF
3261 .type _start, @function
3264 .size _start, .-_start
3265 .section .gnu.linkonce.t.foo,"ax",@progbits
3266 .type foo, @function
3270 .section .gcc_except_table.foo,"a",@progbits
3273 .section .eh_frame,"a",@progbits
3276 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3277 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3278 | grep "gc-sections option ignored" > /dev/null; then
3279 gcc_cv_ld_eh_gc_sections=no
3280 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3281 gcc_cv_ld_eh_gc_sections=yes
3287 rm -f conftest.s conftest.o conftest
3291 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3292 gcc_cv_ld_eh_gc_sections=no
3295 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3296 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3297 [Define if your linker supports garbage collection of
3298 sections in presence of EH frames.])
3300 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3306 AC_CACHE_CHECK(linker --as-needed support,
3307 gcc_cv_ld_as_needed,
3308 [gcc_cv_ld_as_needed=no
3309 if test $in_tree_ld = yes ; then
3310 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3311 && test $in_tree_ld_is_elf = yes; then
3312 gcc_cv_ld_as_needed=yes
3314 elif test x$gcc_cv_ld != x; then
3315 # Check if linker supports --as-needed and --no-as-needed options
3316 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3317 gcc_cv_ld_as_needed=yes
3321 if test x"$gcc_cv_ld_as_needed" = xyes; then
3322 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3323 [Define if your linker supports --as-needed and --no-as-needed options.])
3326 case "$target:$tm_file" in
3327 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3328 AC_CACHE_CHECK(linker support for omitting dot symbols,
3329 gcc_cv_ld_no_dot_syms,
3330 [gcc_cv_ld_no_dot_syms=no
3331 if test $in_tree_ld = yes ; then
3332 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3333 gcc_cv_ld_no_dot_syms=yes
3335 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3336 cat > conftest1.s <<EOF
3340 cat > conftest2.s <<EOF
3341 .section ".opd","aw"
3346 .quad .LEfoo,.TOC.@tocbase,0
3352 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3353 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3354 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3355 gcc_cv_ld_no_dot_syms=yes
3357 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3360 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3361 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3362 [Define if your PowerPC64 linker only needs function descriptor syms.])
3367 AC_CACHE_CHECK(linker --sysroot support,
3369 [gcc_cv_ld_sysroot=no
3370 if test $in_tree_ld = yes ; then
3371 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3372 gcc_cv_ld_sysroot=yes
3374 elif test x$gcc_cv_ld != x; then
3375 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3376 gcc_cv_ld_sysroot=yes
3379 if test x"$gcc_cv_ld_sysroot" = xyes; then
3380 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3381 [Define if your linker supports --sysroot.])
3384 if test x$with_sysroot = x && test x$host = x$target \
3385 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3386 && test "$prefix" != "NONE"; then
3387 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3388 [Define to PREFIX/include if cpp should also search that directory.])
3391 # Test for stack protector support in target C library.
3392 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3393 gcc_cv_libc_provides_ssp,
3394 [gcc_cv_libc_provides_ssp=no
3397 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3398 if test "x$with_sysroot" = x; then
3399 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3400 elif test "x$with_build_sysroot" != "x"; then
3401 glibc_header_dir="${with_build_sysroot}/usr/include"
3402 elif test "x$with_sysroot" = xyes; then
3403 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3405 glibc_header_dir="${with_sysroot}/usr/include"
3408 glibc_header_dir=/usr/include
3410 # glibc 2.4 and later provides __stack_chk_fail and
3411 # either __stack_chk_guard, or TLS access to stack guard canary.
3412 if test -f $glibc_header_dir/features.h \
3413 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3414 $glibc_header_dir/features.h > /dev/null; then
3415 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3416 $glibc_header_dir/features.h > /dev/null; then
3417 gcc_cv_libc_provides_ssp=yes
3418 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3419 $glibc_header_dir/features.h > /dev/null \
3420 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3421 $glibc_header_dir/features.h > /dev/null; then
3422 gcc_cv_libc_provides_ssp=yes
3423 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3424 $glibc_header_dir/features.h > /dev/null && \
3425 test -f $glibc_header_dir/bits/uClibc_config.h && \
3426 $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3427 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3428 gcc_cv_libc_provides_ssp=yes
3433 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3434 [echo "no __stack_chk_fail on this target"])
3436 *) gcc_cv_libc_provides_ssp=no ;;
3439 if test x$gcc_cv_libc_provides_ssp = xyes; then
3440 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3441 [Define if your target C library provides stack protector support])
3444 # Check if TFmode long double should be used by default or not.
3445 # Some glibc targets used DFmode long double, but with glibc 2.4
3446 # and later they can use TFmode.
3448 powerpc*-*-linux* | \
3453 AC_ARG_WITH(long-double-128,
3454 [ --with-long-double-128 Use 128-bit long double by default.],
3455 gcc_cv_target_ldbl128="$with_long_double_128",
3456 [gcc_cv_target_ldbl128=no
3457 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3458 if test "x$with_sysroot" = x; then
3459 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3460 elif test "x$with_build_sysroot" != "x"; then
3461 glibc_header_dir="${with_build_sysroot}/usr/include"
3462 elif test "x$with_sysroot" = xyes; then
3463 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3465 glibc_header_dir="${with_sysroot}/usr/include"
3468 glibc_header_dir=/usr/include
3471 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3472 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3473 && gcc_cv_target_ldbl128=yes
3478 if test x$gcc_cv_target_ldbl128 = xyes; then
3479 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3480 [Define if TFmode long double should be the default])
3483 # Find out what GC implementation we want, or may, use.
3485 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3493 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3496 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3501 echo "Using $GGC for garbage collection."
3503 # Use the system's zlib library.
3505 zlibinc="-I\$(srcdir)/../zlib"
3506 AC_ARG_WITH(system-zlib,
3507 [ --with-system-zlib use installed libz],
3514 dnl Very limited version of automake's enable-maintainer-mode
3516 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3517 dnl maintainer-mode is disabled by default
3518 AC_ARG_ENABLE(maintainer-mode,
3519 [ --enable-maintainer-mode
3520 enable make rules and dependencies not useful
3521 (and sometimes confusing) to the casual installer],
3522 maintainer_mode=$enableval,
3525 AC_MSG_RESULT($maintainer_mode)
3527 if test "$maintainer_mode" = "yes"; then
3538 # Make empty files to contain the specs and options for each language.
3539 # Then add #include lines to for a compiler that has specs and/or options.
3545 # These (without "all_") are set in each config-lang.in.
3546 # `language' must be a single word so is spelled singularly.
3549 all_outputs='Makefile gccbug libada-mk'
3550 # List of language makefile fragments.
3552 # List of language subdirectory makefiles. Deprecated.
3554 # Additional files for gengtype
3555 all_gtfiles="$target_gtfiles"
3557 # These are the languages that are set in --enable-languages,
3558 # and are available in the GCC tree.
3559 all_selected_languages=
3561 # Add the language fragments.
3562 # Languages are added via two mechanisms. Some information must be
3563 # recorded in makefile variables, these are defined in config-lang.in.
3564 # We accumulate them and plug them into the main Makefile.
3565 # The other mechanism is a set of hooks for each of the main targets
3566 # like `clean', `install', etc.
3568 language_hooks="Make-hooks"
3570 for lang in ${srcdir}/*/config-lang.in
3573 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3575 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3576 if test "x$lang_alias" = x
3578 echo "$lang doesn't set \$language." 1>&2
3581 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3582 subdirs="$subdirs $subdir"
3583 case ",$enable_languages," in
3585 all_selected_languages="$all_selected_languages $lang_alias"
3586 if test -f $srcdir/$subdir/lang-specs.h; then
3587 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3599 . ${srcdir}/$subdir/config-lang.in
3600 if test "x$language" = x
3602 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3607 case ",$enable_languages," in
3610 for i in $subdir_requires; do
3611 test -f "${srcdir}/$i/config-lang.in" && continue
3619 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3620 if test -f $srcdir/$subdir/lang.opt; then
3621 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3623 if test -f $srcdir/$subdir/$subdir-tree.def; then
3624 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3626 if test -f ${srcdir}/$subdir/Makefile.in
3627 then all_lang_makefiles="$subdir/Makefile"
3629 all_languages="$all_languages $language"
3630 all_compilers="$all_compilers $compilers"
3631 all_outputs="$all_outputs $outputs"
3632 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3635 # Pick up gtfiles for c
3637 . ${srcdir}/c-config-lang.in
3638 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3641 for language in $all_selected_languages
3643 check_languages="$check_languages check-$language"
3646 # We link each language in with a set of hooks, reached indirectly via
3647 # lang.${target}. Only do so for selected languages.
3651 target_list="all.cross start.encap rest.encap tags \
3652 install-common install-man install-info install-pdf dvi pdf \
3653 html uninstall info man srcextra srcman srcinfo \
3654 mostlyclean clean distclean maintainer-clean"
3656 for t in $target_list
3659 for lang in $all_selected_languages
3663 echo "lang.$t: $x" >> Make-hooks
3667 # Dependency checking.
3671 AC_CONFIG_COMMANDS([gccdepdir],[
3672 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
3673 for lang in $subdirs
3675 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
3676 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
3678 ZW_PROG_COMPILER_DEPENDENCIES([CC])
3679 # Note that if build!=host then we extracted the value from the
3680 # temporary Makefile we created above, when we ran configure.
3681 if test "${build}" = "${host}" ; then
3682 BUILD_DEPMODE='$(CCDEPMODE)'
3684 AC_SUBST(BUILD_DEPMODE)
3693 echo "dir ." > .gdbinit
3694 echo "dir ${srcdir}" >> .gdbinit
3695 if test x$gdb_needs_out_file_path = xyes
3697 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3699 if test "x$subdirs" != x; then
3702 echo "dir ${srcdir}/$s" >> .gdbinit
3705 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3707 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3708 AC_SUBST(gcc_tooldir)
3711 # Find a directory in which to install a shared libgcc.
3713 AC_ARG_ENABLE(version-specific-runtime-libs,
3714 [ --enable-version-specific-runtime-libs
3715 specify that runtime libraries should be
3716 installed in a compiler-specific directory])
3718 AC_ARG_WITH(slibdir,
3719 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3720 slibdir="$with_slibdir",
3721 if test "${enable_version_specific_runtime_libs+set}" = set; then
3722 slibdir='$(libsubdir)'
3723 elif test "$host" != "$target"; then
3724 slibdir='$(build_tooldir)/lib'
3730 objdir=`${PWDCMD-pwd}`
3733 AC_ARG_WITH(datarootdir,
3734 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3735 datarootdir="\${prefix}/$with_datarootdir",
3736 datarootdir='$(prefix)/share')
3737 AC_SUBST(datarootdir)
3740 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3741 docdir="\${prefix}/$with_docdir",
3742 docdir='$(datarootdir)')
3745 AC_ARG_WITH(htmldir,
3746 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3747 htmldir="\${prefix}/$with_htmldir",
3748 htmldir='$(docdir)')
3751 # Substitute configuration variables
3754 AC_SUBST(all_compilers)
3755 AC_SUBST(all_gtfiles)
3756 AC_SUBST(all_lang_makefrags)
3757 AC_SUBST(all_lang_makefiles)
3758 AC_SUBST(all_languages)
3759 AC_SUBST(all_selected_languages)
3760 AC_SUBST(build_exeext)
3761 AC_SUBST(build_install_headers_dir)
3762 AC_SUBST(build_xm_file_list)
3763 AC_SUBST(build_xm_include_list)
3764 AC_SUBST(build_xm_defines)
3765 AC_SUBST(build_file_translate)
3766 AC_SUBST(check_languages)
3767 AC_SUBST(cpp_install_dir)
3768 AC_SUBST(xmake_file)
3769 AC_SUBST(tmake_file)
3770 AC_SUBST(extra_gcc_objs)
3771 AC_SUBST(extra_headers_list)
3772 AC_SUBST(extra_objs)
3773 AC_SUBST(extra_parts)
3774 AC_SUBST(extra_passes)
3775 AC_SUBST(extra_programs)
3776 AC_SUBST(float_h_file)
3777 AC_SUBST(gcc_config_arguments)
3778 AC_SUBST(gcc_gxx_include_dir)
3779 AC_SUBST(host_exeext)
3780 AC_SUBST(host_xm_file_list)
3781 AC_SUBST(host_xm_include_list)
3782 AC_SUBST(host_xm_defines)
3783 AC_SUBST(out_host_hook_obj)
3785 AC_SUBST(lang_opt_files)
3786 AC_SUBST(lang_specs_files)
3787 AC_SUBST(lang_tree_files)
3788 AC_SUBST(local_prefix)
3790 AC_SUBST(objc_boehm_gc)
3792 AC_SUBST(out_object_file)
3793 AC_SUBST(thread_file)
3794 AC_SUBST(tm_file_list)
3795 AC_SUBST(tm_include_list)
3796 AC_SUBST(tm_defines)
3797 AC_SUBST(tm_p_file_list)
3798 AC_SUBST(tm_p_include_list)
3799 AC_SUBST(xm_file_list)
3800 AC_SUBST(xm_include_list)
3801 AC_SUBST(xm_defines)
3802 AC_SUBST(c_target_objs)
3803 AC_SUBST(cxx_target_objs)
3804 AC_SUBST(target_cpu_default)
3806 AC_SUBST_FILE(language_hooks)
3809 if test x${build} = x${host} ; then
3810 if test x${host} = x${target} ; then
3811 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3813 echo "Links are now set up to build a cross-compiler" 1>&2
3814 echo " from ${host} to ${target}." 1>&2
3817 if test x${host} = x${target} ; then
3818 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3819 echo " for ${target}." 1>&2
3821 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3822 echo " from ${host} to ${target}." 1>&2
3826 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3827 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3829 # Configure the subdirectories
3830 # AC_CONFIG_SUBDIRS($subdirs)
3832 # Create the Makefile
3833 # and configure language subdirectories
3834 AC_CONFIG_FILES($all_outputs)
3836 AC_CONFIG_COMMANDS([default],
3838 case ${CONFIG_HEADERS} in
3839 *auto-host.h:config.in*)
3842 # Make sure all the subdirs exist.
3843 for d in $subdirs doc build
3845 test -d $d || mkdir $d
3848 [subdirs='$subdirs'])