2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 AC_ARG_ENABLE(decimal-float,
610 [ --enable-decimal-float={no,yes,bid,dpd}
611 enable decimal float extension to C. Selecting 'bid'
612 or 'dpd' choses which decimal floating point format
615 case $enable_decimal_float in
616 yes | no | bid | dpd) ;;
617 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
618 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
623 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
624 enable_decimal_float=yes
627 AC_MSG_WARN(decimal float is not supported for this target, ignored)
628 enable_decimal_float=no
633 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
634 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
635 [Define to 1 to enable decimal float extension to C.])
637 # x86's use BID format instead of DPD
638 case x$enable_decimal_float in
641 i?86*-*-linux* | x86_64*-*-linux*)
642 enable_decimal_float=bid
645 enable_decimal_float=dpd
650 # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
651 # dependency on libdecnumber.
652 enable_decimal_float=dpd
655 AC_SUBST(enable_decimal_float)
657 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
658 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
659 [Define to 1 to specify that we are using the BID decimal floating
660 point format instead of DPD])
662 # Enable C extension for fixed-point arithmetic.
663 AC_ARG_ENABLE(fixed-point,
664 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
672 AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
673 enable_fixed_point=no
676 enable_fixed_point=yes
681 AC_MSG_WARN(fixed-point is not supported for this target, ignored)
682 enable_fixed_point=no
686 AC_SUBST(enable_fixed_point)
688 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
689 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
690 [Define to 1 to enable fixed-point arithmetic extension to C.])
693 # Pass with no value to take the default
694 # Pass with a value to specify a thread package
695 AC_ARG_ENABLE(threads,
696 [ --enable-threads enable thread usage for target GCC
697 --enable-threads=LIB use LIB thread package for target GCC],,
701 [ --enable-tls enable or disable generation of tls code
702 overriding the assembler check for tls support],
706 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
707 Valid choices are 'yes' and 'no'.]) ;;
711 AC_ARG_ENABLE(objc-gc,
712 [ --enable-objc-gc enable the use of Boehm's garbage collector with
713 the GNU Objective-C runtime],
714 if test x$enable_objc_gc = xno; then
722 [ --with-dwarf2 force the default debug format to be DWARF 2],
723 dwarf2="$with_dwarf2",
726 AC_ARG_ENABLE(shared,
727 [ --disable-shared don't provide a shared libgcc],
729 case $enable_shared in
733 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
734 for pkg in $enableval; do
735 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
742 ], [enable_shared=yes])
743 AC_SUBST(enable_shared)
745 AC_ARG_WITH(build-sysroot,
746 [ --with-build-sysroot=sysroot
747 use sysroot as the system root during the build])
750 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
752 case ${with_sysroot} in
753 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
754 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
757 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
758 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
760 if test "x$prefix" = xNONE; then
761 test_prefix=/usr/local
765 if test "x$exec_prefix" = xNONE; then
766 test_exec_prefix=$test_prefix
768 test_exec_prefix=$exec_prefix
770 case ${TARGET_SYSTEM_ROOT} in
771 "${test_prefix}"|"${test_prefix}/"*|\
772 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
773 '${prefix}'|'${prefix}/'*|\
774 '${exec_prefix}'|'${exec_prefix}/'*)
775 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
776 TARGET_SYSTEM_ROOT_DEFINE="$t"
781 TARGET_SYSTEM_ROOT_DEFINE=
782 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
784 AC_SUBST(TARGET_SYSTEM_ROOT)
785 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
786 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
789 [AS_HELP_STRING([--with-specs=SPECS],
790 [add SPECS to driver command-line processing])],
791 [CONFIGURE_SPECS=$withval],
794 AC_SUBST(CONFIGURE_SPECS)
796 # Build with intermodule optimisations
797 AC_ARG_ENABLE(intermodule,
798 [ --enable-intermodule build the compiler in one step],
799 [case ${enable_intermodule} in
800 yes) onestep="-onestep";;
806 ACX_PKGVERSION([GCC])
807 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
809 # Sanity check enable_languages in case someone does not run the toplevel
810 # configure # script.
811 AC_ARG_ENABLE(languages,
812 [ --enable-languages=LIST specify which front-ends to build],
813 [case ,${enable_languages}, in
815 # go safe -- we cannot be much sure without the toplevel
817 # analysis of which target libs are present and usable
821 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
826 enable_languages=c,${enable_languages}
829 [enable_languages=c])
831 AC_ARG_WITH(multilib-list,
832 [ --with-multilib-list Select multilibs (SH only)],
834 with_multilib_list=default)
836 # -------------------------
837 # Checks for other programs
838 # -------------------------
842 # Find some useful tools
844 # We need awk to create options.c and options.h.
845 # Bail out if it's missing.
847 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
855 # By default, the Darwin ranlib will not treat common symbols as
856 # definitions when building the archive table of contents. Other
857 # ranlibs do that; pass an option to the Darwin ranlib that makes
858 # it behave similarly.
864 AC_SUBST(ranlib_flags)
868 # See if cmp has --ignore-initial.
869 gcc_AC_PROG_CMP_IGNORE_INITIAL
871 # See if we have the mktemp command.
872 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
874 # See if makeinfo has been installed and is modern enough
875 # that we can use it.
876 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
877 [GNU texinfo.* \([0-9][0-9.]*\)],
878 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
879 if test $gcc_cv_prog_makeinfo_modern = no; then
881 *** Makeinfo is missing or too old.
882 *** Info documentation will not be built.])
889 # Is pod2man recent enough to regenerate manpages?
890 AC_MSG_CHECKING([for recent Pod::Man])
891 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
893 GENERATED_MANPAGES=generated-manpages
898 AC_SUBST(GENERATED_MANPAGES)
900 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
903 dnl Don't use AC_PROG_LEX; we insist on flex.
904 dnl LEXLIB is not useful in gcc.
905 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
908 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
910 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
911 # check for build == host before using them.
914 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
915 && test -d ../binutils ; then
916 NM='$(objdir)/../binutils/nm-new'
918 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
922 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
923 && test -d ../binutils ; then
924 AR='$(objdir)/../binutils/ar'
926 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
930 # --------------------
931 # Checks for C headers
932 # --------------------
934 # Need to reject headers which give warnings, so that the -Werror bootstrap
935 # works later. *sigh* This needs to come before all header checks.
942 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
943 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
944 sys/resource.h sys/param.h sys/times.h sys/stat.h \
945 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
947 # Check for thread headers.
948 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
949 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
951 # These tests can't be done till we know if we have limits.h.
960 # These libraries may be used by collect2.
961 # We may need a special search path to get them linked.
962 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
964 for libs in '' -lld -lmld \
965 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
966 '-L/usr/lib/cmplrs/cc3.11 -lmld'
969 AC_TRY_LINK_FUNC(ldopen,
970 [gcc_cv_collect2_libs="$libs"; break])
973 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
974 case $gcc_cv_collect2_libs in
976 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
978 AC_SUBST(COLLECT2_LIBS)
980 # When building Ada code on Alpha, we need exc_resume which is usually in
981 # -lexc. So test for it.
984 AC_SEARCH_LIBS(exc_resume, exc)
987 AC_SUBST(GNAT_LIBEXC)
989 # Some systems put ldexp and frexp in libm instead of libc; assume
990 # they're both in the same place. jcf-dump needs them.
993 AC_SEARCH_LIBS(ldexp, m)
998 # Use <inttypes.h> only if it exists,
999 # doesn't clash with <sys/types.h>, and declares intmax_t.
1000 AC_MSG_CHECKING(for inttypes.h)
1001 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1002 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1003 [[#include <sys/types.h>
1004 #include <inttypes.h>]],
1005 [[intmax_t i = -1;]])],
1006 [gcc_cv_header_inttypes_h=yes],
1007 [gcc_cv_header_inttypes_h=no])])
1008 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1009 if test $gcc_cv_header_inttypes_h = yes; then
1010 AC_DEFINE(HAVE_INTTYPES_H, 1,
1011 [Define if you have a working <inttypes.h> header file.])
1014 dnl Disabled until we have a complete test for buggy enum bitfields.
1015 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1017 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1018 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1019 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1020 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1021 putchar_unlocked putc_unlocked)
1022 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1023 sysconf strsignal getrusage nl_langinfo \
1024 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1027 if test x$ac_cv_func_mbstowcs = xyes; then
1028 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1029 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1035 [gcc_cv_func_mbstowcs_works=yes],
1036 [gcc_cv_func_mbstowcs_works=no],
1037 [gcc_cv_func_mbstowcs_works=yes])])
1038 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1039 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1040 [Define this macro if mbstowcs does not crash when its
1041 first argument is NULL.])
1045 AC_CHECK_TYPE(ssize_t, int)
1046 AC_CHECK_TYPE(caddr_t, char *)
1048 gcc_AC_FUNC_MMAP_BLACKLIST
1052 # Under VMS, vfork works very differently than on Unix. The standard test
1053 # won't work, and it isn't easily adaptable. It makes more sense to
1055 ac_cv_func_vfork_works=yes
1061 # Until we have in-tree GNU iconv:
1063 AC_SUBST(LIBICONV_DEP)
1069 # We will need to find libiberty.h and ansidecl.h
1070 saved_CFLAGS="$CFLAGS"
1071 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1072 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1073 strsignal strstr strverscmp \
1074 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1075 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1076 #include "ansidecl.h"
1077 #include "system.h"])
1079 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1080 #include "ansidecl.h"
1082 #ifdef HAVE_SYS_RESOURCE_H
1083 #include <sys/resource.h>
1087 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1088 #include "ansidecl.h"
1090 #ifdef HAVE_SYS_RESOURCE_H
1091 #include <sys/resource.h>
1093 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1094 [Define to `long' if <sys/resource.h> doesn't define.])])
1096 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1097 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1098 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1099 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1100 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1101 #include "ansidecl.h"
1110 gcc_AC_CHECK_DECLS(times, , ,[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_TIMES_H
1114 #include <sys/times.h>
1118 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1119 #include "ansidecl.h"
1124 # More time-related stuff.
1125 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1126 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1127 #include "ansidecl.h"
1129 #ifdef HAVE_SYS_TIMES_H
1130 #include <sys/times.h>
1132 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1133 if test $ac_cv_struct_tms = yes; then
1134 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1135 [Define if <sys/times.h> defines struct tms.])
1138 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1139 # revisit after autoconf 2.50.
1140 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1141 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1142 #include "ansidecl.h"
1144 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1145 if test $gcc_cv_type_clock_t = yes; then
1146 AC_DEFINE(HAVE_CLOCK_T, 1,
1147 [Define if <time.h> defines clock_t.])
1150 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1151 CFLAGS="$saved_CFLAGS"
1153 gcc_AC_INITFINI_ARRAY
1155 # mkdir takes a single argument on some systems.
1156 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1164 # With Setjmp/Longjmp based exception handling.
1165 AC_ARG_ENABLE(sjlj-exceptions,
1166 [ --enable-sjlj-exceptions
1167 arrange to use setjmp/longjmp exception handling],
1170 if test $enableval != yes; then
1171 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1176 force_sjlj_exceptions=yes],
1179 force_sjlj_exceptions=yes
1183 force_sjlj_exceptions=no
1186 if test $force_sjlj_exceptions = yes; then
1187 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1188 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1189 [Define 0/1 to force the choice for exception handling model.])
1192 # For platforms with the unwind ABI which includes an unwind library,
1193 # libunwind, we can choose to use the system libunwind.
1194 # config.gcc also contains tests of with_system_libunwind.
1195 GCC_CHECK_UNWIND_GETIPINFO
1197 # --------------------------------------------------------
1198 # Build, host, and target specific configuration fragments
1199 # --------------------------------------------------------
1201 # Collect build-machine-specific information.
1202 . ${srcdir}/config.build
1204 # Collect host-machine-specific information.
1205 . ${srcdir}/config.host
1209 # Collect target-machine-specific information.
1210 . ${srcdir}/config.gcc
1212 extra_objs="${host_extra_objs} ${extra_objs}"
1213 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1215 # Default the target-machine variables that were not explicitly set.
1216 if test x"$tm_file" = x
1217 then tm_file=$cpu_type/$cpu_type.h; fi
1219 if test x"$extra_headers" = x
1220 then extra_headers=; fi
1222 if test x$md_file = x
1223 then md_file=$cpu_type/$cpu_type.md; fi
1225 if test x$out_file = x
1226 then out_file=$cpu_type/$cpu_type.c; fi
1228 if test x"$tmake_file" = x
1229 then tmake_file=$cpu_type/t-$cpu_type
1232 if test x"$dwarf2" = xyes
1233 then tm_file="$tm_file tm-dwarf2.h"
1236 # Say what files are being used for the output code and MD file.
1237 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1238 echo "Using \`$srcdir/config/$md_file' as machine description file."
1240 # If any of the xm_file variables contain nonexistent files, warn
1241 # about them and drop them.
1244 for x in $build_xm_file; do
1245 if test -f $srcdir/config/$x
1247 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1253 for x in $host_xm_file; do
1254 if test -f $srcdir/config/$x
1256 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1262 for x in $xm_file; do
1263 if test -f $srcdir/config/$x
1265 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1271 for f in $tm_file; do
1274 if test $count = ax; then
1275 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1277 echo "Using the following target machine macro files:"
1278 for f in $tm_file; do
1279 echo " $srcdir/config/$f"
1283 if test x$need_64bit_hwint = xyes; then
1284 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1285 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1288 if test x$use_long_long_for_widest_fast_int = xyes; then
1289 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1290 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1291 efficiently supported by the host hardware.])
1295 for f in $host_xm_file; do
1298 if test $count = a; then
1300 elif test $count = ax; then
1301 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1303 echo "Using the following host machine macro files:"
1304 for f in $host_xm_file; do
1305 echo " $srcdir/config/$f"
1308 echo "Using ${out_host_hook_obj} for host machine hooks."
1310 if test "$host_xm_file" != "$build_xm_file"; then
1312 for f in $build_xm_file; do
1315 if test $count = a; then
1317 elif test $count = ax; then
1318 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1320 echo "Using the following build machine macro files:"
1321 for f in $build_xm_file; do
1322 echo " $srcdir/config/$f"
1329 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1330 gcc_cv_mcontext_underscores,
1332 #include <sys/cdefs.h>
1333 #include <sys/signal.h>
1334 #include <ucontext.h>
1335 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1337 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1338 if test $gcc_cv_mcontext_underscores = yes; then
1339 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1340 [mcontext_t fields start with __])
1349 # Check if a valid thread package
1350 case ${enable_threads} in
1353 target_thread_file='single'
1357 target_thread_file='single'
1359 aix | dce | gnat | irix | posix | posix95 | rtems | \
1360 single | solaris | vxworks | win32 | mipssde)
1361 target_thread_file=${enable_threads}
1364 echo "${enable_threads} is an unknown thread package" 1>&2
1369 if test x${thread_file} = x; then
1370 # No thread file set by target-specific clauses in config.gcc,
1371 # so use file chosen by default logic above
1372 thread_file=${target_thread_file}
1375 # Make gthr-default.h if we have a thread file.
1377 if test $thread_file != single; then
1378 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1379 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1380 rm -f gthr-default.h-t
1382 mv -f gthr-default.h-t 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.])
1421 # Look for a file containing extra machine modes.
1422 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1423 extra_modes_file='$(srcdir)'/config/${extra_modes}
1424 AC_SUBST(extra_modes_file)
1425 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1426 [Define to the name of a file containing a list of extra machine modes
1427 for this architecture.])
1430 # Convert extra_options into a form suitable for Makefile use.
1432 for f in $extra_options; do
1433 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1435 AC_SUBST(extra_opt_files)
1437 # auto-host.h is the file containing items generated by autoconf and is
1438 # the first file included by config.h.
1439 # If host=build, it is correct to have bconfig include auto-host.h
1440 # as well. If host!=build, we are in error and need to do more
1441 # work to find out the build config parameters.
1442 if test x$host = x$build
1444 build_auto=auto-host.h
1446 # We create a subdir, then run autoconf in the subdir.
1447 # To prevent recursion we set host and build for the new
1448 # invocation of configure to the build for this invocation
1455 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1456 *) realsrcdir=../${srcdir};;
1458 saved_CFLAGS="${CFLAGS}"
1459 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1460 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1461 ${realsrcdir}/configure \
1462 --enable-languages=${enable_languages-all} \
1463 --target=$target_alias --host=$build_alias --build=$build_alias
1464 CFLAGS="${saved_CFLAGS}"
1466 # We just finished tests for the build machine, so rename
1467 # the file auto-build.h in the gcc directory.
1468 mv auto-host.h ../auto-build.h
1471 build_auto=auto-build.h
1473 AC_SUBST(build_subdir)
1475 tm_file="${tm_file} defaults.h"
1476 tm_p_file="${tm_p_file} tm-preds.h"
1477 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1478 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1479 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1480 # put this back in temporarily.
1481 xm_file="auto-host.h ansidecl.h ${xm_file}"
1488 # Compile in configure arguments.
1489 if test -f configargs.h ; then
1490 # Being re-configured.
1491 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1492 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1494 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1497 # Double all backslashes and backslash all quotes to turn
1498 # gcc_config_arguments into a C string.
1499 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1500 $gcc_config_arguments
1502 gcc_config_arguments_str=`cat conftest.out`
1505 cat > configargs.h <<EOF
1506 /* Generated automatically. */
1507 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1508 static const char thread_model[] = "$thread_file";
1510 static const struct {
1511 const char *name, *value;
1512 } configure_default_options[] = $configure_default_options;
1517 gcc_BASEVER=`cat $srcdir/BASE-VER`
1518 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1519 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1520 if test -f $srcdir/REVISION ; then
1521 gcc_REVISION=`cat $srcdir/REVISION`
1525 cat > plugin-version.h <<EOF
1526 #include "configargs.h"
1528 static char basever[] = "$gcc_BASEVER";
1529 static char datestamp[] = "$gcc_DATESTAMP";
1530 static char devphase[] = "$gcc_DEVPHASE";
1531 static char revision[] = "$gcc_REVISION";
1533 /* FIXME plugins: We should make the version information more precise.
1534 One way to do is to add a checksum. */
1536 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1538 configuration_arguments};
1542 # Internationalization
1543 ZW_GNU_GETTEXT_SISTER_DIR
1545 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1546 # -liconv on the link line twice.
1547 case "$LIBINTL" in *$LIBICONV*)
1551 AC_ARG_ENABLE(secureplt,
1552 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1556 [ --enable-cld enable -mcld by default for 32bit x86], [],
1559 # Windows32 Registry support for specifying GCC installation paths.
1560 AC_ARG_ENABLE(win32-registry,
1561 [ --disable-win32-registry
1562 disable lookup of installation paths in the
1563 Registry on Windows hosts
1564 --enable-win32-registry enable registry lookup (default)
1565 --enable-win32-registry=KEY
1566 use KEY instead of GCC version as the last portion
1567 of the registry key],,)
1570 win32 | pe | cygwin* | mingw32* | uwin*)
1571 if test "x$enable_win32_registry" != xno; then
1572 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1575 if test "x$enable_win32_registry" != xno; then
1576 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1577 [Define to 1 if installation paths should be looked up in the Windows
1578 Registry. Ignored on non-Windows hosts.])
1580 if test "x$enable_win32_registry" != xyes \
1581 && test "x$enable_win32_registry" != x; then
1582 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1583 [Define to be the last component of the Windows registry key under which
1584 to look for installation paths. The full key used will be
1585 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1586 The default is the GCC version number.])
1592 # Get an absolute path to the GCC top-level source directory
1593 holddir=`${PWDCMD-pwd}`
1595 topdir=`${PWDCMD-pwd}`
1598 # Conditionalize the makefile for this host machine.
1600 for f in ${host_xmake_file}
1602 if test -f ${srcdir}/config/$f
1604 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1608 # Conditionalize the makefile for this target machine.
1610 for f in ${tmake_file}
1612 if test -f ${srcdir}/config/$f
1614 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1617 tmake_file="${tmake_file_}"
1619 out_object_file=`basename $out_file .c`.o
1621 tm_file_list="options.h"
1622 tm_include_list="options.h"
1623 for f in $tm_file; do
1626 f=`echo $f | sed 's/^..//'`
1627 tm_file_list="${tm_file_list} $f"
1628 tm_include_list="${tm_include_list} $f"
1631 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1632 tm_include_list="${tm_include_list} $f"
1635 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1636 tm_include_list="${tm_include_list} config/$f"
1643 for f in $tm_p_file; do
1646 tm_p_file_list="${tm_p_file_list} $f"
1647 tm_p_include_list="${tm_p_include_list} $f"
1650 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1651 tm_p_include_list="${tm_p_include_list} config/$f"
1657 for f in $xm_file; do
1660 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1661 xm_include_list="${xm_include_list} $f"
1664 xm_file_list="${xm_file_list} $f"
1665 xm_include_list="${xm_include_list} $f"
1668 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1669 xm_include_list="${xm_include_list} config/$f"
1675 host_xm_include_list=
1676 for f in $host_xm_file; do
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1680 host_xm_include_list="${host_xm_include_list} $f"
1683 host_xm_file_list="${host_xm_file_list} $f"
1684 host_xm_include_list="${host_xm_include_list} $f"
1687 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1688 host_xm_include_list="${host_xm_include_list} config/$f"
1694 for f in $build_xm_file; do
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1698 build_xm_include_list="${build_xm_include_list} $f"
1700 auto-build.h | auto-host.h )
1701 build_xm_file_list="${build_xm_file_list} $f"
1702 build_xm_include_list="${build_xm_include_list} $f"
1705 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1706 build_xm_include_list="${build_xm_include_list} config/$f"
1711 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1712 # cross-compiler which does not use the native headers and libraries.
1713 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1714 CROSS= AC_SUBST(CROSS)
1715 ALL=all.internal AC_SUBST(ALL)
1716 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1718 if test "x$with_build_sysroot" != x; then
1719 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1721 # This value is used, even on a native system, because
1722 # CROSS_SYSTEM_HEADER_DIR is just
1723 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1724 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1727 if test x$host != x$target
1729 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1731 SYSTEM_HEADER_DIR=$build_system_header_dir
1732 case "$host","$target" in
1733 # Darwin crosses can use the host system's libraries and headers,
1734 # because of the fat library support. Of course, it must be the
1735 # same version of Darwin on both sides. Allow the user to
1736 # just say --target=foo-darwin without a version number to mean
1737 # "the version on this system".
1738 *-*-darwin*,*-*-darwin*)
1739 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1740 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1741 if test $hostos = $targetos -o $targetos = darwin ; then
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1748 i?86-*-*,x86_64-*-* \
1749 | powerpc*-*-*,powerpc64*-*-*)
1750 CROSS="$CROSS -DNATIVE_CROSS" ;;
1752 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1753 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 # If this is a cross-compiler that does not
1757 # have its own set of headers then define
1760 # If this is using newlib, without having the headers available now,
1761 # then define inhibit_libc in LIBGCC2_CFLAGS.
1762 # This prevents libgcc2 from containing any code which requires libc
1764 : ${inhibit_libc=false}
1765 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1766 test x$with_newlib = xyes ; } &&
1767 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1770 AC_SUBST(inhibit_libc)
1772 # When building gcc with a cross-compiler, we need to adjust things so
1773 # that the generator programs are still built with the native compiler.
1774 # Also, we cannot run fixincludes.
1776 # These are the normal (build=host) settings:
1777 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1778 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1779 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1780 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
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) $(CFLAGS_FOR_BUILD)'
1786 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1789 # Expand extra_headers to include complete path.
1790 # This substitutes for lots of t-* files.
1792 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1793 for file in ${extra_headers} ; do
1794 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1797 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1798 if test x"$use_gcc_tgmath" = xyes
1799 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1802 # Define collect2 in Makefile.
1803 case $host_can_use_collect2 in
1805 *) collect2='collect2$(exeext)' ;;
1807 AC_SUBST([collect2])
1809 # Add a definition of USE_COLLECT2 if system wants one.
1810 case $use_collect2 in
1811 no) use_collect2= ;;
1814 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1815 xm_defines="${xm_defines} USE_COLLECT2"
1816 case $host_can_use_collect2 in
1818 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1824 # ---------------------------
1825 # Assembler & linker features
1826 # ---------------------------
1828 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1829 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1830 # However when ld-new is first executed from the build tree, libtool will
1831 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1832 # to the build tree. While doing this we need to use the previous-stage
1833 # linker, or we have an infinite loop. The presence of a shell script as
1834 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1835 # the gcc/collect-ld script. So we need to know how libtool works, or
1836 # exec-tool will fail.
1838 m4_defun([_LT_CONFIG_COMMANDS], [])
1841 AC_SUBST(enable_fast_install)
1843 # Identify the assembler which will work hand-in-glove with the newly
1844 # built GCC, so that we can examine its features. This is the assembler
1845 # which will be driven by the driver program.
1847 # If build != host, and we aren't building gas in-tree, we identify a
1848 # build->target assembler and hope that it will have the same features
1849 # as the host->target assembler we'll be using.
1850 gcc_cv_gas_major_version=
1851 gcc_cv_gas_minor_version=
1852 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1854 m4_pattern_allow([AS_FOR_TARGET])dnl
1855 AS_VAR_SET_IF(gcc_cv_as,, [
1856 if test -x "$DEFAULT_ASSEMBLER"; then
1857 gcc_cv_as="$DEFAULT_ASSEMBLER"
1858 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1859 && test -f ../gas/Makefile \
1860 && test x$build = x$host; then
1861 gcc_cv_as=../gas/as-new$build_exeext
1862 elif test -x as$build_exeext; then
1863 # Build using assembler in the current directory.
1864 gcc_cv_as=./as$build_exeext
1865 elif test -x $AS_FOR_TARGET; then
1866 gcc_cv_as="$AS_FOR_TARGET"
1868 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1871 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1872 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1873 case "$ORIGINAL_AS_FOR_TARGET" in
1874 ./as | ./as$build_exeext) ;;
1875 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1878 AC_MSG_CHECKING(what assembler to use)
1879 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1880 # Single tree build which includes gas. We want to prefer it
1881 # over whatever linker top-level may have detected, since
1882 # we'll use what we're building after installation anyway.
1883 AC_MSG_RESULT(newly built gas)
1885 _gcc_COMPUTE_GAS_VERSION
1886 in_tree_gas_is_elf=no
1887 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1888 || (grep 'obj_format = multi' ../gas/Makefile \
1889 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1891 in_tree_gas_is_elf=yes
1894 AC_MSG_RESULT($gcc_cv_as)
1898 # Identify the linker which will work hand-in-glove with the newly
1899 # built GCC, so that we can examine its features. This is the linker
1900 # which will be driven by the driver program.
1902 # If build != host, and we aren't building gas in-tree, we identify a
1903 # build->target linker and hope that it will have the same features
1904 # as the host->target linker we'll be using.
1905 gcc_cv_gld_major_version=
1906 gcc_cv_gld_minor_version=
1907 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1908 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1910 AS_VAR_SET_IF(gcc_cv_ld,, [
1911 if test -x "$DEFAULT_LINKER"; then
1912 gcc_cv_ld="$DEFAULT_LINKER"
1913 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1914 && test -f ../ld/Makefile \
1915 && test x$build = x$host; then
1916 gcc_cv_ld=../ld/ld-new$build_exeext
1917 elif test -x collect-ld$build_exeext; then
1918 # Build using linker in the current directory.
1919 gcc_cv_ld=./collect-ld$build_exeext
1920 elif test -x $LD_FOR_TARGET; then
1921 gcc_cv_ld="$LD_FOR_TARGET"
1923 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1926 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1927 PLUGIN_LD=`basename $gcc_cv_ld`
1928 AC_ARG_WITH(plugin-ld,
1929 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1930 [if test x"$withval" != x; then
1931 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1932 PLUGIN_LD="$withval"
1934 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1935 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1937 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1938 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1939 case "$ORIGINAL_LD_FOR_TARGET" in
1940 ./collect-ld | ./collect-ld$build_exeext) ;;
1941 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1944 AC_MSG_CHECKING(what linker to use)
1945 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1946 # Single tree build which includes ld. We want to prefer it
1947 # over whatever linker top-level may have detected, since
1948 # we'll use what we're building after installation anyway.
1949 AC_MSG_RESULT(newly built ld)
1951 in_tree_ld_is_elf=no
1952 if (grep 'EMUL = .*elf' ../ld/Makefile \
1953 || grep 'EMUL = .*linux' ../ld/Makefile \
1954 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1955 in_tree_ld_is_elf=yes
1957 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
1960 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1961 if test x$gcc_cv_gld_version != x; then
1965 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1966 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1969 AC_MSG_RESULT($gcc_cv_ld)
1973 # Figure out what nm we will be using.
1974 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1975 AS_VAR_SET_IF(gcc_cv_nm,, [
1976 if test -f $gcc_cv_binutils_srcdir/configure.in \
1977 && test -f ../binutils/Makefile \
1978 && test x$build = x$host; then
1979 gcc_cv_nm=../binutils/nm-new$build_exeext
1980 elif test -x nm$build_exeext; then
1981 gcc_cv_nm=./nm$build_exeext
1982 elif test -x $NM_FOR_TARGET; then
1983 gcc_cv_nm="$NM_FOR_TARGET"
1985 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1988 AC_MSG_CHECKING(what nm to use)
1989 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1990 # Single tree build which includes binutils.
1991 AC_MSG_RESULT(newly built nm)
1994 AC_MSG_RESULT($gcc_cv_nm)
1998 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1999 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2000 case "$ORIGINAL_NM_FOR_TARGET" in
2001 ./nm | ./nm$build_exeext) ;;
2002 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2006 # Figure out what objdump we will be using.
2007 AS_VAR_SET_IF(gcc_cv_objdump,, [
2008 if test -f $gcc_cv_binutils_srcdir/configure.in \
2009 && test -f ../binutils/Makefile \
2010 && test x$build = x$host; then
2011 # Single tree build which includes binutils.
2012 gcc_cv_objdump=../binutils/objdump$build_exeext
2013 elif test -x objdump$build_exeext; then
2014 gcc_cv_objdump=./objdump$build_exeext
2015 elif test -x $OBJDUMP_FOR_TARGET; then
2016 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2018 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2021 AC_MSG_CHECKING(what objdump to use)
2022 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2023 # Single tree build which includes binutils.
2024 AC_MSG_RESULT(newly built objdump)
2025 elif test x$gcc_cv_objdump = x; then
2026 AC_MSG_RESULT(not found)
2028 AC_MSG_RESULT($gcc_cv_objdump)
2031 # Figure out what readelf we will be using.
2032 AS_VAR_SET_IF(gcc_cv_readelf,, [
2033 if test -f $gcc_cv_binutils_srcdir/configure.in \
2034 && test -f ../binutils/Makefile \
2035 && test x$build = x$host; then
2036 # Single tree build which includes binutils.
2037 gcc_cv_readelf=../binutils/readelf$build_exeext
2038 elif test -x readelf$build_exeext; then
2039 gcc_cv_readelf=./readelf$build_exeext
2041 AC_PATH_PROG(gcc_cv_readelf, readelf)
2044 AC_MSG_CHECKING(what readelf to use)
2045 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2046 # Single tree build which includes binutils.
2047 AC_MSG_RESULT(newly built readelf)
2048 elif test x$gcc_cv_readelf = x; then
2049 AC_MSG_RESULT(not found)
2051 AC_MSG_RESULT($gcc_cv_readelf)
2054 # Figure out what assembler alignment features are present.
2055 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2059 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2060 [Define if your assembler supports .balign and .p2align.])])
2062 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2065 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2066 [Define if your assembler supports specifying the maximum number
2067 of bytes to skip when using the GAS .p2align command.])])
2069 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2072 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2073 [Define if your assembler supports .literal16.])])
2075 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2077 [conftest_label1: .word 0
2079 conftest_label2: .word 0
2081 [if test x$gcc_cv_nm != x; then
2082 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2083 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2084 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2086 else gcc_cv_as_subsection_m1=yes
2088 rm -f conftest.nm1 conftest.nm2
2090 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2091 [Define if your assembler supports .subsection and .subsection -1 starts
2092 emitting at the beginning of your section.])])
2094 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2097 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2099 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2101 [ .weakref foobar, barfnot],,
2102 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2104 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2107 .NSUBSPA $CODE$,COMDAT],,
2108 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2110 # .hidden needs to be supported in both the assembler and the linker,
2111 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2112 # This is irritatingly difficult to feature test for; we have to check the
2113 # date string after the version number. If we've got an in-tree
2114 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2116 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2117 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2123 if test $in_tree_ld != yes ; then
2124 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2125 if echo "$ld_ver" | grep GNU > /dev/null; then
2126 ld_vers=`echo $ld_ver | sed -n \
2127 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2128 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2129 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2130 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2131 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2136 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2137 [if test $in_tree_ld = yes ; then
2139 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2140 && test $in_tree_ld_is_elf = yes; then
2141 gcc_cv_ld_hidden=yes
2145 gcc_cv_ld_hidden=yes
2146 if echo "$ld_ver" | grep GNU > /dev/null; then
2147 if test 0"$ld_date" -lt 20020404; then
2148 if test -n "$ld_date"; then
2149 # If there was date string, but was earlier than 2002-04-04, fail
2151 elif test -z "$ld_vers"; then
2152 # If there was no date string nor ld version number, something is wrong
2155 test -z "$ld_vers_patch" && ld_vers_patch=0
2156 if test "$ld_vers_major" -lt 2; then
2158 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2159 gcc_cv_ld_hidden="no"
2160 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2167 hppa64*-*-hpux* | ia64*-*-hpux*)
2168 gcc_cv_ld_hidden=yes
2170 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2171 gcc_cv_ld_hidden=yes
2180 libgcc_visibility=no
2181 AC_SUBST(libgcc_visibility)
2182 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2183 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2184 libgcc_visibility=yes
2185 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2186 [Define if your assembler and linker support .hidden.])
2189 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2190 gcc_cv_ld_ro_rw_mix=unknown
2191 if test $in_tree_ld = yes ; then
2192 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2193 && test $in_tree_ld_is_elf = yes; then
2194 gcc_cv_ld_ro_rw_mix=read-write
2196 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2197 echo '.section myfoosect, "a"' > conftest1.s
2198 echo '.section myfoosect, "aw"' > conftest2.s
2199 echo '.byte 1' >> conftest2.s
2200 echo '.section myfoosect, "a"' > conftest3.s
2201 echo '.byte 0' >> conftest3.s
2202 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2203 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2204 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2205 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2206 conftest2.o conftest3.o > /dev/null 2>&1; then
2207 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2208 | sed -e '/myfoosect/!d' -e N`
2209 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2210 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2211 gcc_cv_ld_ro_rw_mix=read-only
2213 gcc_cv_ld_ro_rw_mix=read-write
2218 rm -f conftest.* conftest[123].*
2221 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2222 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2223 [Define if your linker links a mix of read-only
2224 and read-write sections into a read-write section.])
2226 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2228 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2229 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2237 [# GAS versions before 2.11 do not support uleb128,
2238 # despite appearing to.
2239 # ??? There exists an elf-specific test that will crash
2240 # the assembler. Perhaps it's better to figure out whether
2241 # arbitrary sections are supported and try the test.
2242 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2243 if echo "$as_ver" | grep GNU > /dev/null; then
2245 as_vers=`echo $as_ver | sed -n \
2246 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2247 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2248 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2250 if test $as_major -eq 2 && test $as_minor -lt 11
2252 else gcc_cv_as_leb128=yes
2255 [AC_DEFINE(HAVE_AS_LEB128, 1,
2256 [Define if your assembler supports .sleb128 and .uleb128.])])
2258 # Check if we have assembler support for unwind directives.
2259 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2266 .cfi_escape 1, 2, 3, 4, 5
2270 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2271 # read-only and read-write sections, we need to make sure that the
2272 # assembler used emits read-write .eh_frame sections.
2273 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2274 if test "x$gcc_cv_objdump" != x; then
2275 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2276 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2277 gcc_cv_as_cfi_directive=no
2279 gcc_cv_as_cfi_directive=yes
2282 # no objdump, err on the side of caution
2283 gcc_cv_as_cfi_directive=no
2286 gcc_cv_as_cfi_directive=yes
2290 gcc_cv_as_cfi_directive=yes
2293 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
2294 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2298 .cfi_adjust_cfa_offset 64
2300 .cfi_adjust_cfa_offset 128
2304 if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
2305 | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
2306 gcc_cv_as_cfi_advance_working=yes
2311 # no readelf, err on the side of caution
2312 gcc_cv_as_cfi_advance_working=no
2314 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2315 [`if test $gcc_cv_as_cfi_directive = yes \
2316 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2317 [Define 0/1 if your assembler supports CFI directives.])
2319 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2320 gcc_cv_as_cfi_personality_directive, ,,
2323 .cfi_personality 0, symbol
2325 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2326 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2327 then echo 1; else echo 0; fi`],
2328 [Define 0/1 if your assembler supports .cfi_personality.])
2330 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2331 gcc_cv_as_cfi_sections_directive, ,,
2333 .cfi_sections .debug_frame, .eh_frame
2336 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2337 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2338 then echo 1; else echo 0; fi`],
2339 [Define 0/1 if your assembler supports .cfi_sections.])
2341 # GAS versions up to and including 2.11.0 may mis-optimize
2343 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2351 .section .eh_frame,"aw",@progbits
2353 .4byte .LECIE1-.LSCIE1
2367 .4byte .LEFDE1-.LASFDE1
2369 .4byte .LASFDE1-__FRAME_BEGIN__
2377 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2378 cat > conftest.lit <<EOF
2379 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2380 0010 01000000 12000000 18000000 00000000 ................
2381 0020 08000000 04080000 0044 .........D @&t@
2383 cat > conftest.big <<EOF
2384 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2385 0010 00000001 00000012 00000018 00000000 ................
2386 0020 00000008 04000000 0844 .........D @&t@
2388 # If the assembler didn't choke, and we can objdump,
2389 # and we got the correct data, then succeed.
2390 # The text in the here-document typically retains its unix-style line
2391 # endings, while the output of objdump will use host line endings.
2392 # Therefore, use diff -b for the comparisons.
2393 if test x$gcc_cv_objdump != x \
2394 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2395 | tail -3 > conftest.got \
2396 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2397 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2399 gcc_cv_as_eh_frame=yes
2400 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2401 gcc_cv_as_eh_frame=buggy
2403 # Uh oh, what do we do now?
2404 gcc_cv_as_eh_frame=no
2407 if test $gcc_cv_as_eh_frame = buggy; then
2408 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2409 [Define if your assembler mis-optimizes .eh_frame data.])
2412 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2413 [elf,2,12,0], [--fatal-warnings],
2414 [.section .rodata.str, "aMS", @progbits, 1])
2415 if test $gcc_cv_as_shf_merge = no; then
2416 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2417 [elf,2,12,0], [--fatal-warnings],
2418 [.section .rodata.str, "aMS", %progbits, 1])
2420 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2421 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2422 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2424 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2425 [elf,2,16,0], [--fatal-warnings],
2426 [.section .text,"axG",@progbits,.foo,comdat])
2427 if test $gcc_cv_as_comdat_group = yes; then
2428 gcc_cv_as_comdat_group_percent=no
2430 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2431 [elf,2,16,0], [--fatal-warnings],
2432 [.section .text,"axG",%progbits,.foo,comdat])
2434 if test $in_tree_ld = yes ; then
2436 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2437 && test $in_tree_ld_is_elf = yes; then
2440 elif test x"$ld_vers" != x; then
2442 if test 0"$ld_date" -lt 20050308; then
2443 if test -n "$ld_date"; then
2444 # If there was date string, but was earlier than 2005-03-08, fail
2446 elif test "$ld_vers_major" -lt 2; then
2448 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2453 # assume linkers other than GNU ld don't support COMDAT group
2456 if test $comdat_group = no; then
2457 gcc_cv_as_comdat_group=no
2458 gcc_cv_as_comdat_group_percent=no
2460 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2461 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2462 [Define 0/1 if your assembler and linker support COMDAT groups.])
2464 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2465 gcc_cv_as_discriminator,
2469 .loc 1 1 0 discriminator 1],,
2470 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2471 [Define if your assembler supports the .loc discriminator sub-directive.])])
2473 # Thread-local storage - the check is heavily parameterized.
2482 .section ".tdata","awT",@progbits
2485 ldq $27,__tls_get_addr($29) !literal!1
2486 lda $16,foo($29) !tlsgd!1
2487 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2488 ldq $27,__tls_get_addr($29) !literal!2
2489 lda $16,foo($29) !tlsldm!2
2490 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2491 ldq $1,foo($29) !gotdtprel
2492 ldah $2,foo($29) !dtprelhi
2493 lda $3,foo($2) !dtprello
2494 lda $4,foo($29) !dtprel
2495 ldq $1,foo($29) !gottprel
2496 ldah $2,foo($29) !tprelhi
2497 lda $3,foo($2) !tprello
2498 lda $4,foo($29) !tprel'
2501 tls_as_opt=--fatal-warnings
2503 cris-*-*|crisv32-*-*)
2505 .section ".tdata","awT",@progbits
2512 tls_as_opt=--fatal-warnings
2516 .section ".tdata","awT",@progbits
2528 .section ".tdata","awT",@progbits
2532 addil LT%foo-$tls_gdidx$,gp
2533 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2536 addil LT%foo-$tls_ldidx$,gp
2538 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2539 addil LR%foo-$tls_dtpoff$,%ret0
2540 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2542 addil LT%foo-$tls_ieoff$,gp
2543 ldw RT%foo-$tls_ieoff$(%r1),%t2
2546 addil LR%foo-$tls_leoff$,%t1
2547 ldo RR%foo-$tls_leoff$(%r1),%t2'
2550 tls_as_opt=--fatal-warnings
2554 .section ".tdata","awT",%progbits
2567 .section ".tdata","awT",@progbits
2571 leal foo@TLSGD(,%ebx,1), %eax
2572 leal foo@TLSLDM(%ebx), %eax
2573 leal foo@DTPOFF(%eax), %edx
2574 movl foo@GOTTPOFF(%ebx), %eax
2575 subl foo@GOTTPOFF(%ebx), %eax
2576 addl foo@GOTNTPOFF(%ebx), %eax
2577 movl foo@INDNTPOFF, %eax
2578 movl $foo@TPOFF, %eax
2579 subl $foo@TPOFF, %eax
2580 leal foo@NTPOFF(%ecx), %eax'
2583 tls_as_opt=--fatal-warnings
2587 .section ".tdata","awT",@progbits
2591 leaq foo@TLSGD(%rip), %rdi
2592 leaq foo@TLSLD(%rip), %rdi
2593 leaq foo@DTPOFF(%rax), %rdx
2594 movq foo@GOTTPOFF(%rip), %rax
2595 movq $foo@TPOFF, %rax'
2598 tls_as_opt=--fatal-warnings
2602 .section ".tdata","awT",@progbits
2605 addl r16 = @ltoff(@dtpmod(foo#)), gp
2606 addl r17 = @ltoff(@dtprel(foo#)), gp
2607 addl r18 = @ltoff(@tprel(foo#)), gp
2608 addl r19 = @dtprel(foo#), gp
2609 adds r21 = @dtprel(foo#), r13
2610 movl r23 = @dtprel(foo#)
2611 addl r20 = @tprel(foo#), gp
2612 adds r22 = @tprel(foo#), r13
2613 movl r24 = @tprel(foo#)'
2616 tls_as_opt=--fatal-warnings
2620 .section .tdata,"awT",@progbits
2624 addiu $4, $28, %tlsgd(x)
2625 addiu $4, $28, %tlsldm(x)
2626 lui $4, %dtprel_hi(x)
2627 addiu $4, $4, %dtprel_lo(x)
2628 lw $4, %gottprel(x)($28)
2629 lui $4, %tprel_hi(x)
2630 addiu $4, $4, %tprel_lo(x)'
2633 tls_as_opt='-32 --fatal-warnings'
2637 .section .tdata,"awT",@progbits
2642 move.l x@TLSGD(%a5),%a0
2643 move.l x@TLSLDM(%a5),%a0
2644 move.l x@TLSLDO(%a5),%a0
2645 move.l x@TLSIE(%a5),%a0
2646 move.l x@TLSLE(%a5),%a0'
2649 tls_as_opt='--fatal-warnings'
2653 .section ".tdata","awT",@progbits
2661 addi 3,31,ld0@got@tlsgd
2663 addi 3,31,x1@got@tlsld
2666 addis 9,3,x2@dtprel@ha
2667 addi 9,9,x2@dtprel@l
2668 lwz 9,x3@got@tprel(31)
2671 addis 9,2,x2@tprel@ha
2672 addi 9,9,x2@tprel@l'
2675 tls_as_opt="-a32 --fatal-warnings"
2679 .section ".tdata","awT",@progbits
2687 addi 3,2,ld0@got@tlsgd
2693 addi 3,2,x1@got@tlsld
2699 addis 9,3,x2@dtprel@ha
2700 addi 9,9,x2@dtprel@l
2703 ld 9,x3@got@dtprel(2)
2709 tls_as_opt="-a64 --fatal-warnings"
2713 .section ".tdata","awT",@progbits
2722 l %r1,foo@GOTNTPOFF(%r12)
2723 l %r1,0(%r1):tls_load:foo
2724 bas %r14,0(%r1,%r13):tls_gdcall:foo
2725 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2728 tls_as_opt="-m31 --fatal-warnings"
2732 .section ".tdata","awT",@progbits
2740 lg %r1,foo@GOTNTPOFF(%r12)
2741 larl %r1,foo@INDNTPOFF
2742 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2743 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2746 tls_as_opt="-m64 -Aesame --fatal-warnings"
2748 sh-*-* | sh[34]-*-*)
2750 .section ".tdata","awT",@progbits
2760 tls_as_opt=--fatal-warnings
2764 sparc*-sun-solaris2.[56789]*)
2765 # TLS was introduced in the Solaris 9 4/04 release but
2766 # we do not enable it by default on Solaris 9 either.
2767 if test "x$enable_tls" = xyes ; then
2773 sparc*-sun-solaris2.*)
2780 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2782 .section ".tdata",#alloc,#write,#tls
2785 sethi %tgd_hi22(foo), %o0
2786 add %o0, %tgd_lo10(foo), %o1
2787 add %l7, %o1, %o0, %tgd_add(foo)
2788 call __tls_get_addr, %tgd_call(foo)
2789 sethi %tldm_hi22(foo), %l1
2790 add %l1, %tldm_lo10(foo), %l2
2791 add %l7, %l2, %o0, %tldm_add(foo)
2792 call __tls_get_addr, %tldm_call(foo)
2793 sethi %tldo_hix22(foo), %l3
2794 xor %l3, %tldo_lox10(foo), %l4
2795 add %o0, %l4, %l5, %tldo_add(foo)
2796 sethi %tie_hi22(foo), %o3
2797 add %o3, %tie_lo10(foo), %o3
2798 ld [%l7 + %o3], %o2, %tie_ld(foo)
2799 add %g7, %o2, %o4, %tie_add(foo)
2800 sethi %tle_hix22(foo), %l1
2801 xor %l1, %tle_lox10(foo), %o5
2802 ld [%g7 + %o5], %o1'
2807 .section ".tdata","awT",@progbits
2810 sethi %tgd_hi22(foo), %o0
2811 add %o0, %tgd_lo10(foo), %o1
2812 add %l7, %o1, %o0, %tgd_add(foo)
2813 call __tls_get_addr, %tgd_call(foo)
2814 sethi %tldm_hi22(foo), %l1
2815 add %l1, %tldm_lo10(foo), %l2
2816 add %l7, %l2, %o0, %tldm_add(foo)
2817 call __tls_get_addr, %tldm_call(foo)
2818 sethi %tldo_hix22(foo), %l3
2819 xor %l3, %tldo_lox10(foo), %l4
2820 add %o0, %l4, %l5, %tldo_add(foo)
2821 sethi %tie_hi22(foo), %o3
2822 add %o3, %tie_lo10(foo), %o3
2823 ld [%l7 + %o3], %o2, %tie_ld(foo)
2824 add %g7, %o2, %o4, %tie_add(foo)
2825 sethi %tle_hix22(foo), %l1
2826 xor %l1, %tle_lox10(foo), %o5
2827 ld [%g7 + %o5], %o1'
2830 tls_as_opt="-32 --fatal-warnings"
2835 .section ".tdata","awT",@progbits
2838 movi a8, foo@TLSFUNC
2839 movi a10, foo@TLSARG
2840 callx8.tls a8, foo@TLSCALL'
2847 if test "x$enable_tls" = xno ; then
2848 : # TLS explicitly disabled.
2849 elif test "x$enable_tls" = xyes ; then
2850 set_have_as_tls=yes # TLS explicitly enabled.
2851 elif test -z "$tls_first_major"; then
2852 : # If we don't have a check, assume no support.
2854 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2855 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2856 [set_have_as_tls=yes])
2858 if test $set_have_as_tls = yes ; then
2859 AC_DEFINE(HAVE_AS_TLS, 1,
2860 [Define if your assembler supports thread-local storage.])
2863 # Target-specific assembler checks.
2865 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2866 gcc_cv_ld_static_dynamic=no
2867 if test $in_tree_ld = yes ; then
2868 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
2869 gcc_cv_ld_static_dynamic=yes
2871 elif test x$gcc_cv_ld != x; then
2872 # Check if linker supports -Bstatic/-Bdynamic option
2873 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2874 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2875 gcc_cv_ld_static_dynamic=yes
2878 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2879 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2880 [Define if your linker supports -Bstatic/-Bdynamic option.])
2882 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2884 if test x"$demangler_in_ld" = xyes; then
2885 AC_MSG_CHECKING(linker --demangle support)
2886 gcc_cv_ld_demangle=no
2887 if test $in_tree_ld = yes; then
2888 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2889 gcc_cv_ld_demangle=yes
2891 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2892 # Check if the GNU linker supports --demangle option
2893 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2894 gcc_cv_ld_demangle=yes
2897 if test x"$gcc_cv_ld_demangle" = xyes; then
2898 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2899 [Define if your linker supports --demangle option.])
2901 AC_MSG_RESULT($gcc_cv_ld_demangle)
2905 # All TARGET_ABI_OSF targets.
2906 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2907 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2908 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2911 extbl $3, $2, $3 !lituse_bytoff!1
2912 ldq $2, a($29) !literal!1
2913 ldq $4, b($29) !literal!2
2914 ldq_u $3, 0($2) !lituse_base!1
2915 ldq $27, f($29) !literal!5
2916 jsr $26, ($27), f !lituse_jsr!5
2917 ldah $29, 0($26) !gpdisp!3
2918 lda $0, c($29) !gprel
2919 ldah $1, d($29) !gprelhigh
2920 lda $1, d($1) !gprellow
2921 lda $29, 0($29) !gpdisp!3],,
2922 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2923 [Define if your assembler supports explicit relocations.])])
2924 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2925 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2928 ldq $27, a($29) !literal!1
2929 jsr $26, ($27), a !lituse_jsrdirect!1],,
2930 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2931 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2935 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2936 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2937 [-no-mul-bug-abort], [.text],,
2938 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2939 [Define if your assembler supports the -no-mul-bug-abort option.])])
2943 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2944 [.register %g2, #scratch],,
2945 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2946 [Define if your assembler supports .register.])])
2948 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2950 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2951 [Define if your assembler supports -relax option.])])
2953 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2954 gcc_cv_as_sparc_ua_pcrel,,
2962 .uaword %r_disp32(foo)],
2963 [if test x$gcc_cv_ld != x \
2964 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2965 gcc_cv_as_sparc_ua_pcrel=yes
2968 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2969 [Define if your assembler and linker support unaligned PC relative relocs.])
2971 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2972 gcc_cv_as_sparc_ua_pcrel_hidden,,
2977 .uaword %r_disp32(foo)
2978 .byte 0x32, 0x33, 0x34
2983 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2984 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2985 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2986 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2987 if $gcc_cv_objdump -R conftest 2> /dev/null \
2988 | grep 'DISP32' > /dev/null 2>&1; then
2991 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2995 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2996 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2997 ]) # unaligned pcrel relocs
2999 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3000 gcc_cv_as_sparc_offsetable_lo10,,
3003 or %g1, %lo(ab) + 12, %g1
3004 or %g1, %lo(ab + 12), %g1],
3005 [if test x$gcc_cv_objdump != x \
3006 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3007 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3008 gcc_cv_as_sparc_offsetable_lo10=yes
3010 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3011 [Define if your assembler supports offsetable %lo().])])
3015 i[34567]86-*-* | x86_64-*-*)
3019 # Full C++ conformance when using a shared libstdc++-v3 requires some
3020 # support from the Cygwin DLL, which in more recent versions exports
3021 # wrappers to aid in interposing and redirecting operators new, delete,
3022 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3023 # are configuring for a version of Cygwin that exports the wrappers.
3024 if test x$host = x$target; then
3025 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3027 # Can't check presence of libc functions during cross-compile, so
3028 # we just have to assume we're building for an up-to-date target.
3029 gcc_ac_cygwin_dll_wrappers=yes
3031 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3032 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3033 [Define if you want to generate code by default that assumes that the
3034 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3037 cygwin* | pe | mingw32*)
3038 # Recent binutils allows the three-operand form of ".comm" on PE. This
3039 # definition is used unconditionally to initialise the default state of
3040 # the target option variable that governs usage of the feature.
3041 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3042 [2,19,52],,[.comm foo,1,32])
3043 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3044 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3045 [Define if your assembler supports specifying the alignment
3046 of objects allocated using the GAS .comm command.])
3047 # Used for DWARF 2 in PE
3048 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3049 gcc_cv_as_ix86_pe_secrel32,
3055 [if test x$gcc_cv_ld != x \
3056 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3057 gcc_cv_as_ix86_pe_secrel32=yes
3060 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3061 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3065 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3066 gcc_cv_as_ix86_filds,,,
3067 [filds mem; fists mem],,
3068 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3069 [Define if your assembler uses filds and fists mnemonics.])])
3071 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3072 gcc_cv_as_ix86_fildq,,,
3073 [fildq mem; fistpq mem],,
3074 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3075 [Define if your assembler uses fildq and fistq mnemonics.])])
3077 gcc_GAS_CHECK_FEATURE([cmov syntax],
3078 gcc_cv_as_ix86_cmov_sun_syntax,,,
3079 [cmovl.l %edx, %eax],,
3080 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3081 [Define if your assembler supports the Sun syntax for cmov.])])
3083 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3084 gcc_cv_as_ix86_ffreep,,,
3086 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3087 [Define if your assembler supports the ffreep mnemonic.])])
3089 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3090 gcc_cv_as_ix86_sahf,,,
3092 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3093 [Define if your assembler supports the sahf mnemonic.])])
3095 gcc_GAS_CHECK_FEATURE([swap suffix],
3096 gcc_cv_as_ix86_swap,,,
3097 [movl.s %esp, %ebp],,
3098 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3099 [Define if your assembler supports the swap suffix.])])
3101 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3102 gcc_cv_as_ix86_diff_sect_delta,,,
3110 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3111 [Define if your assembler supports the subtraction of symbols in different sections.])])
3113 # This one is used unconditionally by i386.[ch]; it is to be defined
3114 # to 1 if the feature is present, 0 otherwise.
3115 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3116 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3122 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3123 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3124 [Define true if the assembler supports '.long foo@GOTOFF'.])
3128 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3129 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3131 addl r15 = @ltoffx(x#), gp
3133 ld8.mov r16 = [[r15]], x#],,
3134 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3135 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3141 *-*-aix*) conftest_s=' .machine "pwr5"
3145 gcc_GAS_CHECK_FEATURE([.machine directive support],
3146 gcc_cv_as_machine_directive,,,
3147 [ .machine ppc7400])
3148 if test x$gcc_cv_as_machine_directive != xyes; then
3149 echo "*** This target requires an assembler supporting \".machine\"" >&2
3150 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3151 test x$build = x$target && exit 1
3155 *) conftest_s=' .machine power4
3160 gcc_GAS_CHECK_FEATURE([mfcr field support],
3161 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3163 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3164 [Define if your assembler supports mfcr field.])])
3167 *-*-aix*) conftest_s=' .machine "pwr5"
3170 *) conftest_s=' .machine power5
3175 gcc_GAS_CHECK_FEATURE([popcntb support],
3176 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3178 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3179 [Define if your assembler supports popcntb field.])])
3182 *-*-aix*) conftest_s=' .machine "pwr5x"
3185 *) conftest_s=' .machine power5
3190 gcc_GAS_CHECK_FEATURE([fp round support],
3191 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3193 [AC_DEFINE(HAVE_AS_FPRND, 1,
3194 [Define if your assembler supports fprnd.])])
3197 *-*-aix*) conftest_s=' .machine "pwr6"
3200 *) conftest_s=' .machine power6
3205 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3206 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3208 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3209 [Define if your assembler supports mffgpr and mftgpr.])])
3212 *-*-aix*) conftest_s=' .csect .text[[PR]]
3214 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3218 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3219 *) conftest_s=' .text
3221 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3224 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3225 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3227 [AC_DEFINE(HAVE_AS_REL16, 1,
3228 [Define if your assembler supports R_PPC_REL16 relocs.])])
3231 *-*-aix*) conftest_s=' .machine "pwr6"
3234 *) conftest_s=' .machine power6
3239 gcc_GAS_CHECK_FEATURE([compare bytes support],
3240 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3242 [AC_DEFINE(HAVE_AS_CMPB, 1,
3243 [Define if your assembler supports cmpb.])])
3246 *-*-aix*) conftest_s=' .machine "pwr6"
3249 *) conftest_s=' .machine power6
3254 gcc_GAS_CHECK_FEATURE([decimal float support],
3255 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3257 [AC_DEFINE(HAVE_AS_DFP, 1,
3258 [Define if your assembler supports DFP instructions.])])
3261 *-*-aix*) conftest_s=' .machine "pwr7"
3264 *) conftest_s=' .machine power7
3269 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3270 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3272 [AC_DEFINE(HAVE_AS_VSX, 1,
3273 [Define if your assembler supports VSX instructions.])])
3276 *-*-aix*) conftest_s=' .machine "pwr7"
3279 *) conftest_s=' .machine power7
3284 gcc_GAS_CHECK_FEATURE([popcntd support],
3285 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3287 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3288 [Define if your assembler supports POPCNTD instructions.])])
3291 *-*-aix*) conftest_s=' .csect .text[[PR]]
3293 *) conftest_s=' .text
3297 gcc_GAS_CHECK_FEATURE([lwsync support],
3298 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3300 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3301 [Define if your assembler supports LWSYNC instructions.])])
3304 *-*-aix*) conftest_s=' .machine "476"
3307 *) conftest_s=' .machine "476"
3312 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3313 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3315 [AC_DEFINE(HAVE_AS_DCI, 1,
3316 [Define if your assembler supports the DCI/ICI instructions.])])
3318 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3319 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3320 [.gnu_attribute 4,1],,
3321 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3322 [Define if your assembler supports .gnu_attribute.])])
3324 gcc_GAS_CHECK_FEATURE([tls marker support],
3325 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3326 [ bl __tls_get_addr(x@tlsgd)],,
3327 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3328 [Define if your assembler supports arg info for __tls_get_addr.])])
3332 gcc_GAS_CHECK_FEATURE([.ref support],
3333 gcc_cv_as_aix_ref, [2.21.0],,
3334 [ .csect stuff[[rw]]
3340 [AC_DEFINE(HAVE_AS_REF, 1,
3341 [Define if your assembler supports .ref])])
3347 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3348 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3349 [ lw $4,%gp_rel(foo)($4)],,
3350 [if test x$target_cpu_default = x
3351 then target_cpu_default=MASK_EXPLICIT_RELOCS
3352 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3354 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3355 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3356 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3357 [Define if the assembler understands -mno-shared.])])
3359 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3360 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3361 [.gnu_attribute 4,1],,
3362 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3363 [Define if your assembler supports .gnu_attribute.])])
3365 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3366 gcc_cv_as_mips_dtprelword, [2,18,0],,
3367 [.section .tdata,"awT",@progbits
3371 .dtprelword x+0x8000],,
3372 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3373 [Define if your assembler supports .dtprelword.])])
3375 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3376 gcc_cv_as_ld_jalr_reloc=no
3377 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3378 if test $in_tree_ld = yes ; then
3379 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3380 && test $in_tree_ld_is_elf = yes; then
3381 gcc_cv_as_ld_jalr_reloc=yes
3383 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3384 echo ' .ent x' > conftest.s
3385 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3386 echo ' ld $25,%call16(y)($28)' >> conftest.s
3387 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3388 echo '1: jalr $25' >> conftest.s
3389 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3390 echo '1: jalr $25' >> conftest.s
3391 echo ' .end x' >> conftest.s
3392 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3393 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3394 if $gcc_cv_objdump -d conftest.so | grep -q jalr \
3395 && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
3396 gcc_cv_as_ld_jalr_reloc=yes
3402 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3403 if test x$target_cpu_default = x; then
3404 target_cpu_default=MASK_RELAX_PIC_CALLS
3406 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3409 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3411 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3412 [gcc_cv_ld_mips_personality_relaxation],
3413 [gcc_cv_ld_mips_personality_relaxation=no
3414 if test $in_tree_ld = yes ; then
3415 if test "$gcc_cv_gld_major_version" -eq 2 \
3416 -a "$gcc_cv_gld_minor_version" -ge 21 \
3417 -o "$gcc_cv_gld_major_version" -gt 2; then
3418 gcc_cv_ld_mips_personality_relaxation=yes
3420 elif test x$gcc_cv_as != x \
3421 -a x$gcc_cv_ld != x \
3422 -a x$gcc_cv_readelf != x ; then
3423 cat > conftest.s <<EOF
3425 .cfi_personality 0x80,indirect_ptr
3432 .section .data,"aw",@progbits
3436 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3437 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3438 if $gcc_cv_readelf -d conftest 2>&1 \
3439 | grep TEXTREL > /dev/null 2>&1; then
3441 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3442 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3445 gcc_cv_ld_mips_personality_relaxation=yes
3449 rm -f conftest.s conftest.o conftest])
3450 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3451 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3452 [Define if your linker can relax absolute .eh_frame personality
3453 pointers into PC-relative form.])
3458 # Mips and HP-UX need the GNU assembler.
3459 # Linux on IA64 might be able to use the Intel assembler.
3462 mips*-*-* | *-*-hpux* )
3463 if test x$gas_flag = xyes \
3464 || test x"$host" != x"$build" \
3465 || test ! -x "$gcc_cv_as" \
3466 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3469 echo "*** This configuration requires the GNU assembler" >&2
3475 # ??? Not all targets support dwarf2 debug_line, even within a version
3476 # of gas. Moreover, we need to emit a valid instruction to trigger any
3477 # info to the output file. So, as supported targets are added to gas 2.11,
3478 # add some instruction here to (also) show we expect this might work.
3479 # ??? Once 2.11 is released, probably need to add first known working
3480 # version to the per-target configury.
3482 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3483 | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3484 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3485 | spu-*-* | fido*-*-* | m32c-*-*)
3488 ia64*-*-* | s390*-*-*)
3495 if test x"$insn" != x; then
3497 .file 1 \"conftest.s\"
3500 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3501 gcc_cv_as_dwarf2_debug_line,
3502 [elf,2,11,0],, [$conftest_s],
3503 [if test x$gcc_cv_objdump != x \
3504 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3505 | grep debug_line > /dev/null 2>&1; then
3506 gcc_cv_as_dwarf2_debug_line=yes
3509 # The .debug_line file table must be in the exact order that
3510 # we specified the files, since these indices are also used
3511 # by DW_AT_decl_file. Approximate this test by testing if
3512 # the assembler bitches if the same index is assigned twice.
3513 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3514 gcc_cv_as_dwarf2_file_buggy,,,
3518 if test $gcc_cv_as_dwarf2_debug_line = yes \
3519 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3520 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3521 [Define if your assembler supports dwarf2 .file/.loc directives,
3522 and preserves file table indices exactly as given.])
3525 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3526 gcc_cv_as_gdwarf2_flag,
3527 [elf,2,11,0], [--gdwarf2], [$insn],,
3528 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3529 [Define if your assembler supports the --gdwarf2 option.])])
3531 gcc_GAS_CHECK_FEATURE([--gstabs option],
3532 gcc_cv_as_gstabs_flag,
3533 [elf,2,11,0], [--gstabs], [$insn],
3534 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3535 # and warns about it, but still exits successfully. So check for
3537 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3539 else gcc_cv_as_gstabs_flag=yes
3541 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3542 [Define if your assembler supports the --gstabs option.])])
3544 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3545 gcc_cv_as_debug_prefix_map_flag,
3546 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3547 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3548 [Define if your assembler supports the --debug-prefix-map option.])])
3551 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3554 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3555 [Define if your assembler supports .lcomm with an alignment field.])])
3557 AC_ARG_ENABLE(gnu-unique-object,
3558 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3560 [case $enable_gnu_unique_object in
3562 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3563 Valid choices are 'yes' and 'no'.]) ;;
3565 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3567 [.type foo, @gnu_unique_object],,
3568 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3569 [if test x$host = x$build -a x$host = x$target &&
3570 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3572 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3573 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3575 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3576 if test "$glibcnum" -ge 2011 ; then
3577 enable_gnu_unique_object=yes
3580 if test x$enable_gnu_unique_object = xyes; then
3581 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3582 [Define if your assembler supports @gnu_unique_object.])
3585 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3586 [gcc_cv_as_line_zero],
3587 [gcc_cv_as_line_zero=no
3588 if test $in_tree_gas = yes; then
3589 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3590 elif test "x$gcc_cv_as" != x; then
3591 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3592 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3593 test "x`cat conftest.out`" = x
3595 gcc_cv_as_line_zero=yes
3597 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3598 cat conftest.s >&AS_MESSAGE_LOG_FD
3599 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3600 cat conftest.out >&AS_MESSAGE_LOG_FD
3602 rm -f conftest.o conftest.s conftest.out
3604 if test "x$gcc_cv_as_line_zero" = xyes; then
3605 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3606 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3609 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3610 gcc_cv_ld_eh_frame_hdr=no
3611 if test $in_tree_ld = yes ; then
3612 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3613 && test $in_tree_ld_is_elf = yes; then
3614 gcc_cv_ld_eh_frame_hdr=yes
3616 elif test x$gcc_cv_ld != x; then
3617 # Check if linker supports --eh-frame-hdr option
3618 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3619 gcc_cv_ld_eh_frame_hdr=yes
3622 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3623 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3624 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3625 [Define if your linker supports --eh-frame-hdr option.])
3627 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3629 AC_MSG_CHECKING(linker position independent executable support)
3631 if test $in_tree_ld = yes ; then
3632 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3633 && test $in_tree_ld_is_elf = yes; then
3636 elif test x$gcc_cv_ld != x; then
3637 # Check if linker supports -pie option
3638 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3642 if test x"$gcc_cv_ld_pie" = xyes; then
3643 AC_DEFINE(HAVE_LD_PIE, 1,
3644 [Define if your linker supports -pie option.])
3646 AC_MSG_RESULT($gcc_cv_ld_pie)
3648 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3649 gcc_cv_ld_eh_gc_sections=no
3650 if test $in_tree_ld = yes ; then
3651 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3652 && test $in_tree_ld_is_elf = yes; then
3653 gcc_cv_ld_eh_gc_sections=yes
3655 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3656 cat > conftest.s <<EOF
3659 .type _start, @function
3662 .size _start, .-_start
3663 .section .text.foo,"ax",@progbits
3664 .type foo, @function
3668 .section .gcc_except_table.foo,"a",@progbits
3671 .section .eh_frame,"a",@progbits
3674 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3675 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3676 | grep "gc-sections option ignored" > /dev/null; then
3677 gcc_cv_ld_eh_gc_sections=no
3678 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3679 gcc_cv_ld_eh_gc_sections=yes
3680 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3681 if test x$gcc_cv_as_comdat_group != xyes; then
3682 gcc_cv_ld_eh_gc_sections=no
3683 cat > conftest.s <<EOF
3686 .type _start, @function
3689 .size _start, .-_start
3690 .section .gnu.linkonce.t.foo,"ax",@progbits
3691 .type foo, @function
3695 .section .gcc_except_table.foo,"a",@progbits
3698 .section .eh_frame,"a",@progbits
3701 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3702 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3703 | grep "gc-sections option ignored" > /dev/null; then
3704 gcc_cv_ld_eh_gc_sections=no
3705 elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3706 gcc_cv_ld_eh_gc_sections=yes
3712 rm -f conftest.s conftest.o conftest
3716 # ??? This apparently exposes a binutils bug with PC-relative relocations.
3717 gcc_cv_ld_eh_gc_sections=no
3720 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3721 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3722 [Define if your linker supports garbage collection of
3723 sections in presence of EH frames.])
3725 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3731 AC_CACHE_CHECK(linker --as-needed support,
3732 gcc_cv_ld_as_needed,
3733 [gcc_cv_ld_as_needed=no
3734 if test $in_tree_ld = yes ; then
3735 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3736 && test $in_tree_ld_is_elf = yes; then
3737 gcc_cv_ld_as_needed=yes
3739 elif test x$gcc_cv_ld != x; then
3740 # Check if linker supports --as-needed and --no-as-needed options
3741 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3742 gcc_cv_ld_as_needed=yes
3746 if test x"$gcc_cv_ld_as_needed" = xyes; then
3747 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3748 [Define if your linker supports --as-needed and --no-as-needed options.])
3751 case "$target:$tm_file" in
3752 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3753 AC_CACHE_CHECK(linker support for omitting dot symbols,
3754 gcc_cv_ld_no_dot_syms,
3755 [gcc_cv_ld_no_dot_syms=no
3756 if test $in_tree_ld = yes ; then
3757 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3758 gcc_cv_ld_no_dot_syms=yes
3760 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3761 cat > conftest1.s <<EOF
3765 cat > conftest2.s <<EOF
3766 .section ".opd","aw"
3771 .quad .LEfoo,.TOC.@tocbase,0
3777 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3778 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3779 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3780 gcc_cv_ld_no_dot_syms=yes
3782 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3785 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3786 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3787 [Define if your PowerPC64 linker only needs function descriptor syms.])
3792 AC_CACHE_CHECK(linker --build-id support,
3794 [gcc_cv_ld_buildid=no
3795 if test $in_tree_ld = yes ; then
3796 if test "$gcc_cv_gld_major_version" -eq 2 -a \
3797 "$gcc_cv_gld_minor_version" -ge 18 -o \
3798 "$gcc_cv_gld_major_version" -gt 2 \
3799 && test $in_tree_ld_is_elf = yes; then
3800 gcc_cv_ld_buildid=yes
3802 elif test x$gcc_cv_ld != x; then
3803 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
3804 gcc_cv_ld_buildid=yes
3807 if test x"$gcc_cv_ld_buildid" = xyes; then
3808 AC_DEFINE(HAVE_LD_BUILDID, 1,
3809 [Define if your linker supports --build-id.])
3812 AC_ARG_ENABLE(linker-build-id,
3813 [ --enable-linker-build-id
3814 compiler will always pass --build-id to linker],
3816 enable_linker_build_id=no)
3818 if test x"$enable_linker_build_id" = xyes; then
3819 if test x"$gcc_cv_ld_buildid" = xyes; then
3820 AC_DEFINE(ENABLE_LD_BUILDID, 1,
3821 [Define if gcc should always pass --build-id to linker.])
3823 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
3827 AC_CACHE_CHECK(linker --sysroot support,
3829 [gcc_cv_ld_sysroot=no
3830 if test $in_tree_ld = yes ; then
3831 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3832 gcc_cv_ld_sysroot=yes
3834 elif test x$gcc_cv_ld != x; then
3835 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3836 gcc_cv_ld_sysroot=yes
3839 if test x"$gcc_cv_ld_sysroot" = xyes; then
3840 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3841 [Define if your linker supports --sysroot.])
3844 if test x$with_sysroot = x && test x$host = x$target \
3845 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3846 && test "$prefix" != "NONE"; then
3847 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3848 [Define to PREFIX/include if cpp should also search that directory.])
3851 # Test for stack protector support in target C library.
3852 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3853 gcc_cv_libc_provides_ssp,
3854 [gcc_cv_libc_provides_ssp=no
3856 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3857 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3858 if test "x$with_headers" != x; then
3859 glibc_header_dir=$with_headers
3860 elif test "x$with_sysroot" = x; then
3861 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3862 elif test "x$with_build_sysroot" != "x"; then
3863 glibc_header_dir="${with_build_sysroot}/usr/include"
3864 elif test "x$with_sysroot" = xyes; then
3865 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3867 glibc_header_dir="${with_sysroot}/usr/include"
3870 glibc_header_dir=/usr/include
3872 # glibc 2.4 and later provides __stack_chk_fail and
3873 # either __stack_chk_guard, or TLS access to stack guard canary.
3875 if test -f $glibc_header_dir/features.h \
3876 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3877 $glibc_header_dir/features.h > /dev/null; then
3878 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3879 $glibc_header_dir/features.h > /dev/null; then
3880 gcc_cv_libc_provides_ssp=yes
3881 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3882 $glibc_header_dir/features.h > /dev/null \
3883 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3884 $glibc_header_dir/features.h > /dev/null; then
3885 gcc_cv_libc_provides_ssp=yes
3886 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
3887 $glibc_header_dir/features.h > /dev/null && \
3888 test -f $glibc_header_dir/bits/uClibc_config.h && \
3889 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
3890 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3891 gcc_cv_libc_provides_ssp=yes
3897 # Avoid complicated tests (see
3898 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3899 # simply assert that glibc does provide this, which is true for all
3900 # realistically usable GNU/Hurd configurations.
3901 gcc_cv_libc_provides_ssp=yes;;
3902 *-*-darwin* | *-*-freebsd*)
3903 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3904 [echo "no __stack_chk_fail on this target"])
3906 *) gcc_cv_libc_provides_ssp=no ;;
3909 if test x$gcc_cv_libc_provides_ssp = xyes; then
3910 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3911 [Define if your target C library provides stack protector support])
3914 # Check if TFmode long double should be used by default or not.
3915 # Some glibc targets used DFmode long double, but with glibc 2.4
3916 # and later they can use TFmode.
3918 powerpc*-*-linux* | \
3923 AC_ARG_WITH(long-double-128,
3924 [ --with-long-double-128 Use 128-bit long double by default.],
3925 gcc_cv_target_ldbl128="$with_long_double_128",
3926 [gcc_cv_target_ldbl128=no
3927 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3928 if test "x$with_sysroot" = x; then
3929 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3930 elif test "x$with_build_sysroot" != "x"; then
3931 glibc_header_dir="${with_build_sysroot}/usr/include"
3932 elif test "x$with_sysroot" = xyes; then
3933 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3935 glibc_header_dir="${with_sysroot}/usr/include"
3938 glibc_header_dir=/usr/include
3941 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3942 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3943 && gcc_cv_target_ldbl128=yes
3948 if test x$gcc_cv_target_ldbl128 = xyes; then
3949 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3950 [Define if TFmode long double should be the default])
3953 # Find out what GC implementation we want, or may, use.
3955 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3963 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3966 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3971 echo "Using $GGC for garbage collection."
3973 # Libraries to use on the host. This will normally be set by the top
3974 # level Makefile. Here we simply capture the value for our Makefile.
3975 if test -z "${HOST_LIBS+set}"; then
3980 # Use the system's zlib library.
3982 zlibinc="-I\$(srcdir)/../zlib"
3983 AC_ARG_WITH(system-zlib,
3984 [ --with-system-zlib use installed libz],
3991 dnl Very limited version of automake's enable-maintainer-mode
3993 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3994 dnl maintainer-mode is disabled by default
3995 AC_ARG_ENABLE(maintainer-mode,
3996 [ --enable-maintainer-mode
3997 enable make rules and dependencies not useful
3998 (and sometimes confusing) to the casual installer],
3999 maintainer_mode=$enableval,
4002 AC_MSG_RESULT($maintainer_mode)
4004 if test "$maintainer_mode" = "yes"; then
4015 # Make empty files to contain the specs and options for each language.
4016 # Then add #include lines to for a compiler that has specs and/or options.
4022 # These (without "all_") are set in each config-lang.in.
4023 # `language' must be a single word so is spelled singularly.
4026 all_outputs='Makefile gccbug'
4027 # List of language makefile fragments.
4029 # List of language subdirectory makefiles. Deprecated.
4031 # Additional files for gengtype
4032 all_gtfiles="$target_gtfiles"
4034 # These are the languages that are set in --enable-languages,
4035 # and are available in the GCC tree.
4036 all_selected_languages=
4038 # Add the language fragments.
4039 # Languages are added via two mechanisms. Some information must be
4040 # recorded in makefile variables, these are defined in config-lang.in.
4041 # We accumulate them and plug them into the main Makefile.
4042 # The other mechanism is a set of hooks for each of the main targets
4043 # like `clean', `install', etc.
4045 language_hooks="Make-hooks"
4047 for lang in ${srcdir}/*/config-lang.in
4050 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4052 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4053 if test "x$lang_alias" = x
4055 echo "$lang doesn't set \$language." 1>&2
4058 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4059 subdirs="$subdirs $subdir"
4061 # $gcc_subdir is where the gcc integration files are to be found
4062 # for a language, both for internal compiler purposes (compiler
4063 # sources implementing front-end to GCC tree converters), and for
4064 # build infrastructure purposes (Make-lang.in, etc.)
4066 # This will be <subdir> (relative to $srcdir) if a line like
4067 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4068 # is found in <langdir>/config-lang.in, and will remain <langdir>
4071 # Except for the language alias (fetched above), the regular
4072 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4073 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4074 # only this and the language alias.
4076 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4077 if [ "$gcc_subdir" = "" ]; then
4078 gcc_subdir="$subdir"
4081 case ",$enable_languages," in
4083 all_selected_languages="$all_selected_languages $lang_alias"
4084 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4085 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4097 . ${srcdir}/$gcc_subdir/config-lang.in
4098 if test "x$language" = x
4100 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4105 case ",$enable_languages," in
4108 for i in $subdir_requires; do
4109 test -f "${srcdir}/$i/config-lang.in" && continue
4117 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4118 if test -f $srcdir/$gcc_subdir/lang.opt; then
4119 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4121 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4122 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4124 if test -f ${srcdir}/$gcc_subdir/Makefile.in
4125 then all_lang_makefiles="$gcc_subdir/Makefile"
4127 all_languages="$all_languages $language"
4128 all_compilers="$all_compilers $compilers"
4129 all_outputs="$all_outputs $outputs"
4130 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4131 case ",$enable_languages," in
4133 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4135 AC_SUBST(enable_lto)
4141 # Pick up gtfiles for c
4143 . ${srcdir}/c-config-lang.in
4144 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4147 for language in $all_selected_languages
4149 check_languages="$check_languages check-$language"
4152 # We link each language in with a set of hooks, reached indirectly via
4153 # lang.${target}. Only do so for selected languages.
4157 target_list="all.cross start.encap rest.encap tags \
4158 install-common install-man install-info install-pdf install-html dvi \
4159 pdf html uninstall info man srcextra srcman srcinfo \
4160 mostlyclean clean distclean maintainer-clean install-plugin"
4162 for t in $target_list
4165 for lang in $all_selected_languages
4169 echo "lang.$t: $x" >> Make-hooks
4178 echo "dir ." > .gdbinit
4179 echo "dir ${srcdir}" >> .gdbinit
4180 if test x$gdb_needs_out_file_path = xyes
4182 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4184 if test "x$subdirs" != x; then
4187 echo "dir ${srcdir}/$s" >> .gdbinit
4190 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4192 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4193 AC_SUBST(gcc_tooldir)
4196 # Find a directory in which to install a shared libgcc.
4198 AC_ARG_ENABLE(version-specific-runtime-libs,
4199 [ --enable-version-specific-runtime-libs
4200 specify that runtime libraries should be
4201 installed in a compiler-specific directory])
4203 AC_ARG_WITH(slibdir,
4204 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4205 slibdir="$with_slibdir",
4206 if test "${enable_version_specific_runtime_libs+set}" = set; then
4207 slibdir='$(libsubdir)'
4208 elif test "$host" != "$target"; then
4209 slibdir='$(build_tooldir)/lib'
4215 # Substitute configuration variables
4218 AC_SUBST(all_compilers)
4219 AC_SUBST(all_gtfiles)
4220 AC_SUBST(all_lang_makefrags)
4221 AC_SUBST(all_lang_makefiles)
4222 AC_SUBST(all_languages)
4223 AC_SUBST(all_selected_languages)
4224 AC_SUBST(build_exeext)
4225 AC_SUBST(build_install_headers_dir)
4226 AC_SUBST(build_xm_file_list)
4227 AC_SUBST(build_xm_include_list)
4228 AC_SUBST(build_xm_defines)
4229 AC_SUBST(build_file_translate)
4230 AC_SUBST(check_languages)
4231 AC_SUBST(cpp_install_dir)
4232 AC_SUBST(xmake_file)
4233 AC_SUBST(tmake_file)
4234 AC_SUBST(TM_ENDIAN_CONFIG)
4235 AC_SUBST(TM_MULTILIB_CONFIG)
4236 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4237 AC_SUBST(extra_gcc_objs)
4238 AC_SUBST(extra_headers_list)
4239 AC_SUBST(extra_objs)
4240 AC_SUBST(extra_parts)
4241 AC_SUBST(extra_passes)
4242 AC_SUBST(extra_programs)
4243 AC_SUBST(float_h_file)
4244 AC_SUBST(gcc_config_arguments)
4245 AC_SUBST(gcc_gxx_include_dir)
4246 AC_SUBST(host_exeext)
4247 AC_SUBST(host_xm_file_list)
4248 AC_SUBST(host_xm_include_list)
4249 AC_SUBST(host_xm_defines)
4250 AC_SUBST(out_host_hook_obj)
4252 AC_SUBST(lang_opt_files)
4253 AC_SUBST(lang_specs_files)
4254 AC_SUBST(lang_tree_files)
4255 AC_SUBST(local_prefix)
4257 AC_SUBST(objc_boehm_gc)
4259 AC_SUBST(out_object_file)
4260 AC_SUBST(thread_file)
4261 AC_SUBST(tm_file_list)
4262 AC_SUBST(tm_include_list)
4263 AC_SUBST(tm_defines)
4264 AC_SUBST(tm_p_file_list)
4265 AC_SUBST(tm_p_include_list)
4266 AC_SUBST(xm_file_list)
4267 AC_SUBST(xm_include_list)
4268 AC_SUBST(xm_defines)
4269 AC_SUBST(use_gcc_stdint)
4270 AC_SUBST(c_target_objs)
4271 AC_SUBST(cxx_target_objs)
4272 AC_SUBST(fortran_target_objs)
4273 AC_SUBST(target_cpu_default)
4275 AC_SUBST_FILE(language_hooks)
4278 if test x${build} = x${host} ; then
4279 if test x${host} = x${target} ; then
4280 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4282 echo "Links are now set up to build a cross-compiler" 1>&2
4283 echo " from ${host} to ${target}." 1>&2
4286 if test x${host} = x${target} ; then
4287 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4288 echo " for ${target}." 1>&2
4290 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4291 echo " from ${host} to ${target}." 1>&2
4295 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4296 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4298 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4299 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4301 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4302 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4303 if test "x${CLOOGLIBS}" != "x" ; then
4304 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4307 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4308 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4309 if test "x${LIBELFLIBS}" != "x" ; then
4310 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4313 # Check for plugin support
4314 AC_ARG_ENABLE(plugin,
4315 [ --enable-plugin enable plugin support],
4316 enable_plugin=$enableval,
4317 enable_plugin=yes; default_plugin=yes)
4320 if test x"$enable_plugin" = x"yes"; then
4322 AC_MSG_CHECKING([for exported symbols])
4323 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4324 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4325 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4326 : # No need to use a flag
4328 AC_MSG_CHECKING([for -rdynamic])
4329 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4330 if $gcc_cv_objdump -T conftest | grep foobar > /dev/null; then
4331 pluginlibs="-rdynamic"
4339 AC_SEARCH_LIBS([dlopen], [dl])
4340 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4341 pluginlibs="$pluginlibs -ldl"
4345 # Check that we can build shared objects with -fPIC -shared
4346 saved_LDFLAGS="$LDFLAGS"
4347 LDFLAGS="$LDFLAGS -fPIC -shared"
4348 AC_MSG_CHECKING([for -fPIC -shared])
4350 [extern int X;],[return X == 0;],
4351 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4352 [AC_MSG_RESULT([no]); have_pic_shared=no])
4353 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4357 LDFLAGS="$saved_LDFLAGS"
4359 # If plugin support had been requested but not available, fail.
4360 if test x"$enable_plugin" = x"no" ; then
4361 if test x"$default_plugin" != x"yes"; then
4363 Building GCC with plugin support requires a host that supports
4364 -fPIC, -shared, -ldl and -rdynamic.])
4369 AC_SUBST(pluginlibs)
4370 AC_SUBST(enable_plugin)
4371 if test x"$enable_plugin" = x"yes"; then
4372 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4375 # Configure the subdirectories
4376 # AC_CONFIG_SUBDIRS($subdirs)
4378 # Create the Makefile
4379 # and configure language subdirectories
4380 AC_CONFIG_FILES($all_outputs)
4382 AC_CONFIG_COMMANDS([default],
4384 case ${CONFIG_HEADERS} in
4385 *auto-host.h:config.in*)
4388 # Make sure all the subdirs exist.
4389 for d in $subdirs doc build
4391 test -d $d || mkdir $d
4394 [subdirs='$subdirs'])