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, 2010, 2011 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
309 # sizeof(char) is 1 by definition.
310 AC_CHECK_SIZEOF(void *)
311 AC_CHECK_SIZEOF(short)
313 AC_CHECK_SIZEOF(long)
314 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
315 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
318 # ---------------------
319 # Warnings and checking
320 # ---------------------
322 # Check $CC warning features (if it's GCC).
323 # We want to use -pedantic, but we don't want warnings about
327 # So, we only use -pedantic if we can disable those warnings.
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
331 ACX_PROG_CC_WARNING_OPTS(
332 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
338 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
339 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
340 [-Wno-overlength-strings])), [strict_warn])
341 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
343 # The above macros do nothing if the compiler is not GCC. However, the
344 # Makefile has more goo to add other flags, so these variables are used
345 # to enable warnings only for GCC.
348 if test "x$GCC" = "xyes"; then
349 warn_cflags='$(GCC_WARN_CFLAGS)'
350 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
352 AC_SUBST(warn_cflags)
353 AC_SUBST(warn_cxxflags)
355 # Enable expensive internal checks
357 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
361 AC_ARG_ENABLE(checking,
362 [ --enable-checking[=LIST]
363 enable expensive run-time checks. With LIST,
364 enable only specific categories of checks.
365 Categories are: yes,no,all,none,release.
366 Flags are: assert,df,fold,gc,gcac,gimple,misc,
367 rtlflag,rtl,runtime,tree,valgrind,types.],
368 [ac_checking_flags="${enableval}"],[
369 # Determine the default checks.
370 if test x$is_release = x ; then
371 ac_checking_flags=yes
373 ac_checking_flags=release
375 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
376 for check in release $ac_checking_flags
379 # these set all the flags to specific states
380 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
381 ac_fold_checking= ; ac_gc_checking=1 ;
382 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
383 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
384 ac_tree_checking=1 ; ac_valgrind_checking= ;
385 ac_types_checking=1 ;;
386 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
387 ac_fold_checking= ; ac_gc_checking= ;
388 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
389 ac_rtlflag_checking= ; ac_runtime_checking= ;
390 ac_tree_checking= ; ac_valgrind_checking= ;
391 ac_types_checking= ;;
392 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
393 ac_fold_checking=1 ; ac_gc_checking=1 ;
394 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
395 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
396 ac_tree_checking=1 ; ac_valgrind_checking= ;
397 ac_types_checking=1 ;;
398 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
399 ac_fold_checking= ; ac_gc_checking= ;
400 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
401 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
402 ac_tree_checking= ; ac_valgrind_checking= ;
403 ac_types_checking= ;;
404 # these enable particular checks
405 assert) ac_assert_checking=1 ;;
406 df) ac_df_checking=1 ;;
407 fold) ac_fold_checking=1 ;;
408 gc) ac_gc_checking=1 ;;
409 gcac) ac_gc_always_collect=1 ;;
410 gimple) ac_gimple_checking=1 ;;
411 misc) ac_checking=1 ;;
412 rtl) ac_rtl_checking=1 ;;
413 rtlflag) ac_rtlflag_checking=1 ;;
414 runtime) ac_runtime_checking=1 ;;
415 tree) ac_tree_checking=1 ;;
416 types) ac_types_checking=1 ;;
417 valgrind) ac_valgrind_checking=1 ;;
418 *) AC_MSG_ERROR(unknown check category $check) ;;
424 if test x$ac_checking != x ; then
425 AC_DEFINE(ENABLE_CHECKING, 1,
426 [Define if you want more run-time sanity checks. This one gets a grab
427 bag of miscellaneous but relatively cheap checks.])
428 nocommon_flag=-fno-common
430 AC_SUBST(nocommon_flag)
431 if test x$ac_df_checking != x ; then
432 AC_DEFINE(ENABLE_DF_CHECKING, 1,
433 [Define if you want more run-time sanity checks for dataflow.])
435 if test x$ac_assert_checking != x ; then
436 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
437 [Define if you want assertions enabled. This is a cheap check.])
439 if test x$ac_gimple_checking != x ; then
440 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
441 [Define if you want operations on GIMPLE (the basic data structure of
442 the high-level optimizers) to be checked for dynamic type safety at
443 runtime. This is moderately expensive.])
445 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
446 if test x$ac_runtime_checking != x ; then
447 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
448 [Define if you want runtime assertions enabled. This is a cheap check.])
450 if test x$ac_tree_checking != x ; then
451 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
452 [Define if you want all operations on trees (the basic data
453 structure of the front ends) to be checked for dynamic type safety
454 at runtime. This is moderately expensive. The tree browser debugging
455 routines will also be enabled by this option.
457 TREEBROWSER=tree-browser.o
459 if test x$ac_types_checking != x ; then
460 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
461 [Define if you want all gimple types to be verified after gimplifiation.
465 AC_SUBST(TREEBROWSER)
466 if test x$ac_rtl_checking != x ; then
467 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
468 [Define if you want all operations on RTL (the basic data structure
469 of the optimizer and back end) to be checked for dynamic type safety
470 at runtime. This is quite expensive.])
472 if test x$ac_rtlflag_checking != x ; then
473 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
474 [Define if you want RTL flag accesses to be checked against the RTL
475 codes that are supported for each access macro. This is relatively
478 if test x$ac_gc_checking != x ; then
479 AC_DEFINE(ENABLE_GC_CHECKING, 1,
480 [Define if you want the garbage collector to do object poisoning and
481 other memory allocation checks. This is quite expensive.])
483 if test x$ac_gc_always_collect != x ; then
484 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
485 [Define if you want the garbage collector to operate in maximally
486 paranoid mode, validating the entire heap and collecting garbage at
487 every opportunity. This is extremely expensive.])
489 if test x$ac_fold_checking != x ; then
490 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
491 [Define if you want fold checked that it never destructs its argument.
492 This is quite expensive.])
494 valgrind_path_defines=
497 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
498 dnl # an if statement. This was the source of very frustrating bugs
499 dnl # in converting to autoconf 2.5x!
500 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
502 if test x$ac_valgrind_checking != x ; then
503 # It is certainly possible that there's valgrind but no valgrind.h.
504 # GCC relies on making annotations so we must have both.
505 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
506 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
507 [[#include <valgrind/memcheck.h>
508 #ifndef VALGRIND_DISCARD
509 #error VALGRIND_DISCARD not defined
511 [gcc_cv_header_valgrind_memcheck_h=yes],
512 [gcc_cv_header_valgrind_memcheck_h=no])
513 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
514 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
515 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
516 [[#include <memcheck.h>
517 #ifndef VALGRIND_DISCARD
518 #error VALGRIND_DISCARD not defined
520 [gcc_cv_header_memcheck_h=yes],
521 [gcc_cv_header_memcheck_h=no])
522 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
523 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
524 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
525 if test "x$valgrind_path" = "x" \
526 || (test $have_valgrind_h = no \
527 && test $gcc_cv_header_memcheck_h = no \
528 && test $gcc_cv_header_valgrind_memcheck_h = no); then
529 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
531 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
532 valgrind_command="$valgrind_path -q"
533 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
534 [Define if you want to run subprograms and generated programs
535 through valgrind (a memory checker). This is extremely expensive.])
536 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
537 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
538 [Define if valgrind's valgrind/memcheck.h header is installed.])
540 if test $gcc_cv_header_memcheck_h = yes; then
541 AC_DEFINE(HAVE_MEMCHECK_H, 1,
542 [Define if valgrind's memcheck.h header is installed.])
545 AC_SUBST(valgrind_path_defines)
546 AC_SUBST(valgrind_command)
548 # Enable code coverage collection
549 AC_ARG_ENABLE(coverage,
550 [ --enable-coverage[=LEVEL]
551 enable compiler's code coverage collection.
552 Use to measure compiler performance and locate
553 unused parts of the compiler. With LEVEL, specify
554 optimization. Values are opt, noopt,
556 [case "${enableval}" in
558 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
561 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
564 # a.k.a. --disable-coverage
568 AC_MSG_ERROR(unknown coverage setting $enableval)
572 AC_SUBST(coverage_flags)
574 AC_ARG_ENABLE(gather-detailed-mem-stats,
575 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
576 [enable_gather_detailed_mem_stats=no])
577 if test x$enable_gather_detailed_mem_stats = xyes ; then
578 AC_DEFINE(GATHER_STATISTICS, 1,
579 [Define to enable detailed memory allocation stats gathering.])
582 # -------------------------------
583 # Miscenalleous configure options
584 # -------------------------------
586 # See if we are building gcc with C++.
587 AC_ARG_ENABLE(build-with-cxx,
588 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
589 ENABLE_BUILD_WITH_CXX=$enableval,
590 ENABLE_BUILD_WITH_CXX=no)
591 AC_SUBST(ENABLE_BUILD_WITH_CXX)
592 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
593 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
594 [Define if building with C++.])
599 [ --with-stabs arrange to use stabs instead of host debug format],
603 # Determine whether or not multilibs are enabled.
604 AC_ARG_ENABLE(multilib,
605 [ --enable-multilib enable library support for multiple ABIs],
606 [], [enable_multilib=yes])
607 AC_SUBST(enable_multilib)
609 # Determine whether or not multiarch is enabled.
610 AC_ARG_ENABLE(multiarch,
611 [AS_HELP_STRING([--enable-multiarch],
612 [enable support for multiarch paths])],
613 [case "${enableval}" in
614 yes|no|auto) enable_multiarch=$enableval;;
615 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
616 esac], [enable_multiarch=auto])
617 if test x${enable_multiarch} = xauto; then
618 if test x$host != x$target && test "x$with_sysroot" = x; then
619 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
623 AC_MSG_CHECKING(for multiarch configuration)
624 AC_SUBST(enable_multiarch)
625 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
627 # needed for setting the multiarch name for soft-float/hard-float ABIs
631 # Enable __cxa_atexit for C++.
632 AC_ARG_ENABLE(__cxa_atexit,
633 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
636 # Enable C extension for decimal float if target supports it.
637 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
639 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
640 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
641 [Define to 1 to enable decimal float extension to C.])
643 # Use default_decimal_float for dependency.
644 enable_decimal_float=$default_decimal_float
646 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
647 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
648 [Define to 1 to specify that we are using the BID decimal floating
649 point format instead of DPD])
651 # Enable C extension for fixed-point arithmetic.
652 AC_ARG_ENABLE(fixed-point,
653 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
661 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
662 enable_fixed_point=no
665 enable_fixed_point=yes
670 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
671 enable_fixed_point=no
675 AC_SUBST(enable_fixed_point)
677 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
678 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
679 [Define to 1 to enable fixed-point arithmetic extension to C.])
682 # Pass with no value to take the default
683 # Pass with a value to specify a thread package
684 AC_ARG_ENABLE(threads,
685 [ --enable-threads enable thread usage for target GCC
686 --enable-threads=LIB use LIB thread package for target GCC],,
690 [ --enable-tls enable or disable generation of tls code
691 overriding the assembler check for tls support],
695 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
696 Valid choices are 'yes' and 'no'.]) ;;
700 AC_ARG_ENABLE(objc-gc,
701 [ --enable-objc-gc enable the use of Boehm's garbage collector with
702 the GNU Objective-C runtime],
703 if test x$enable_objc_gc = xno; then
711 [ --with-dwarf2 force the default debug format to be DWARF 2],
712 dwarf2="$with_dwarf2",
715 AC_ARG_ENABLE(shared,
716 [ --disable-shared don't provide a shared libgcc],
718 case $enable_shared in
722 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
723 for pkg in $enableval; do
724 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
731 ], [enable_shared=yes])
732 AC_SUBST(enable_shared)
734 AC_ARG_WITH(build-sysroot,
735 [ --with-build-sysroot=sysroot
736 use sysroot as the system root during the build])
739 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
741 case ${with_sysroot} in
742 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
743 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
746 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
747 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
749 if test "x$prefix" = xNONE; then
750 test_prefix=/usr/local
754 if test "x$exec_prefix" = xNONE; then
755 test_exec_prefix=$test_prefix
757 test_exec_prefix=$exec_prefix
759 case ${TARGET_SYSTEM_ROOT} in
760 "${test_prefix}"|"${test_prefix}/"*|\
761 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
762 '${prefix}'|'${prefix}/'*|\
763 '${exec_prefix}'|'${exec_prefix}/'*)
764 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
765 TARGET_SYSTEM_ROOT_DEFINE="$t"
770 TARGET_SYSTEM_ROOT_DEFINE=
771 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
773 AC_SUBST(TARGET_SYSTEM_ROOT)
774 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
775 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
778 [AS_HELP_STRING([--with-specs=SPECS],
779 [add SPECS to driver command-line processing])],
780 [CONFIGURE_SPECS=$withval],
783 AC_SUBST(CONFIGURE_SPECS)
785 ACX_PKGVERSION([GCC])
786 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
788 # Sanity check enable_languages in case someone does not run the toplevel
789 # configure # script.
790 AC_ARG_ENABLE(languages,
791 [ --enable-languages=LIST specify which front-ends to build],
792 [case ,${enable_languages}, in
794 # go safe -- we cannot be much sure without the toplevel
796 # analysis of which target libs are present and usable
800 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
805 enable_languages=c,${enable_languages}
808 [enable_languages=c])
810 AC_ARG_WITH(multilib-list,
811 [ --with-multilib-list Select multilibs (SH only)],
813 with_multilib_list=default)
815 # -------------------------
816 # Checks for other programs
817 # -------------------------
821 # Find some useful tools
823 # We need awk to create options.c and options.h.
824 # Bail out if it's missing.
826 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
833 AC_SUBST(ranlib_flags)
837 # See if cmp has --ignore-initial.
838 gcc_AC_PROG_CMP_IGNORE_INITIAL
840 # See if we have the mktemp command.
841 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
843 # See if makeinfo has been installed and is modern enough
844 # that we can use it.
845 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
846 [GNU texinfo.* \([0-9][0-9.]*\)],
847 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
848 if test $gcc_cv_prog_makeinfo_modern = no; then
850 *** Makeinfo is missing or too old.
851 *** Info documentation will not be built.])
858 # Is pod2man recent enough to regenerate manpages?
859 AC_MSG_CHECKING([for recent Pod::Man])
860 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
862 GENERATED_MANPAGES=generated-manpages
867 AC_SUBST(GENERATED_MANPAGES)
869 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
872 dnl Don't use AC_PROG_LEX; we insist on flex.
873 dnl LEXLIB is not useful in gcc.
874 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
877 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
879 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
880 # check for build == host before using them.
883 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
884 && test -d ../binutils ; then
885 NM='${objdir}/../binutils/nm-new'
887 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
891 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
892 && test -d ../binutils ; then
893 AR='${objdir}/../binutils/ar'
895 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
899 # --------------------
900 # Checks for C headers
901 # --------------------
903 # Need to reject headers which give warnings, so that the -Werror bootstrap
904 # works later. *sigh* This needs to come before all header checks.
911 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
912 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
913 sys/resource.h sys/param.h sys/times.h sys/stat.h \
914 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
916 # Check for thread headers.
917 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
918 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
920 # These tests can't be done till we know if we have limits.h.
924 # ----------------------
925 # Checks for C++ headers
926 # ----------------------
928 dnl Autoconf will give an error in the configure script if there is no
929 dnl C++ preprocessor. Hack to prevent that.
930 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
932 m4_popdef([AC_MSG_ERROR])[]dnl
936 AC_CHECK_HEADERS(unordered_map)
937 AC_CHECK_HEADERS(tr1/unordered_map)
938 AC_CHECK_HEADERS(ext/hash_map)
947 # These libraries may be used by collect2.
948 # We may need a special search path to get them linked.
949 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
951 for libs in '' -lld -lmld \
952 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
953 '-L/usr/lib/cmplrs/cc3.11 -lmld'
956 AC_TRY_LINK_FUNC(ldopen,
957 [gcc_cv_collect2_libs="$libs"; break])
960 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
961 case $gcc_cv_collect2_libs in
963 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
965 AC_SUBST(COLLECT2_LIBS)
967 # When building Ada code on Alpha, we need exc_resume which is usually in
968 # -lexc. So test for it.
971 AC_SEARCH_LIBS(exc_resume, exc)
974 AC_SUBST(GNAT_LIBEXC)
976 # Some systems put ldexp and frexp in libm instead of libc; assume
977 # they're both in the same place. jcf-dump needs them.
980 AC_SEARCH_LIBS(ldexp, m)
985 # Use <inttypes.h> only if it exists,
986 # doesn't clash with <sys/types.h>, and declares intmax_t.
987 AC_MSG_CHECKING(for inttypes.h)
988 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
989 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
990 [[#include <sys/types.h>
991 #include <inttypes.h>]],
992 [[intmax_t i = -1;]])],
993 [gcc_cv_header_inttypes_h=yes],
994 [gcc_cv_header_inttypes_h=no])])
995 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
996 if test $gcc_cv_header_inttypes_h = yes; then
997 AC_DEFINE(HAVE_INTTYPES_H, 1,
998 [Define if you have a working <inttypes.h> header file.])
1001 dnl Disabled until we have a complete test for buggy enum bitfields.
1002 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1004 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1005 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1006 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1007 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1008 putchar_unlocked putc_unlocked)
1009 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1010 sysconf strsignal getrusage nl_langinfo \
1011 gettimeofday mbstowcs wcswidth mmap setlocale \
1014 if test x$ac_cv_func_mbstowcs = xyes; then
1015 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1016 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1022 [gcc_cv_func_mbstowcs_works=yes],
1023 [gcc_cv_func_mbstowcs_works=no],
1024 [gcc_cv_func_mbstowcs_works=yes])])
1025 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1026 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1027 [Define this macro if mbstowcs does not crash when its
1028 first argument is NULL.])
1032 AC_CHECK_TYPE(ssize_t, int)
1033 AC_CHECK_TYPE(caddr_t, char *)
1035 gcc_AC_FUNC_MMAP_BLACKLIST
1039 # Under VMS, vfork works very differently than on Unix. The standard test
1040 # won't work, and it isn't easily adaptable. It makes more sense to
1042 ac_cv_func_vfork_works=yes
1048 # Until we have in-tree GNU iconv:
1050 AC_SUBST(LIBICONV_DEP)
1056 # We will need to find libiberty.h and ansidecl.h
1057 saved_CFLAGS="$CFLAGS"
1058 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1059 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1060 strsignal strstr strverscmp \
1061 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1062 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1063 #include "ansidecl.h"
1064 #include "system.h"])
1066 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1067 #include "ansidecl.h"
1069 #ifdef HAVE_SYS_RESOURCE_H
1070 #include <sys/resource.h>
1074 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1075 #include "ansidecl.h"
1077 #ifdef HAVE_SYS_RESOURCE_H
1078 #include <sys/resource.h>
1080 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1081 [Define to `long' if <sys/resource.h> doesn't define.])])
1083 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1084 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1085 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1086 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1087 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1088 #include "ansidecl.h"
1097 gcc_AC_CHECK_DECLS(times, , ,[
1098 #include "ansidecl.h"
1100 #ifdef HAVE_SYS_TIMES_H
1101 #include <sys/times.h>
1105 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1106 #include "ansidecl.h"
1111 # More time-related stuff.
1112 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1113 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1114 #include "ansidecl.h"
1116 #ifdef HAVE_SYS_TIMES_H
1117 #include <sys/times.h>
1119 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1120 if test $ac_cv_struct_tms = yes; then
1121 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1122 [Define if <sys/times.h> defines struct tms.])
1125 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1126 # revisit after autoconf 2.50.
1127 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1128 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1129 #include "ansidecl.h"
1131 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1132 if test $gcc_cv_type_clock_t = yes; then
1133 AC_DEFINE(HAVE_CLOCK_T, 1,
1134 [Define if <time.h> defines clock_t.])
1137 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1138 CFLAGS="$saved_CFLAGS"
1140 gcc_AC_INITFINI_ARRAY
1142 # mkdir takes a single argument on some systems.
1143 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1151 # With Setjmp/Longjmp based exception handling.
1152 AC_ARG_ENABLE(sjlj-exceptions,
1153 [ --enable-sjlj-exceptions
1154 arrange to use setjmp/longjmp exception handling],
1157 if test $enableval != yes; then
1158 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1163 force_sjlj_exceptions=yes],
1166 force_sjlj_exceptions=yes
1170 force_sjlj_exceptions=no
1173 if test $force_sjlj_exceptions = yes; then
1174 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1175 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1176 [Define 0/1 to force the choice for exception handling model.])
1179 # For platforms with the unwind ABI which includes an unwind library,
1180 # libunwind, we can choose to use the system libunwind.
1181 # config.gcc also contains tests of with_system_libunwind.
1182 GCC_CHECK_UNWIND_GETIPINFO
1184 # --------------------------------------------------------
1185 # Build, host, and target specific configuration fragments
1186 # --------------------------------------------------------
1188 # Collect build-machine-specific information.
1189 . ${srcdir}/config.build
1191 # Collect host-machine-specific information.
1192 . ${srcdir}/config.host
1196 # Collect target-machine-specific information.
1197 . ${srcdir}/config.gcc
1199 extra_objs="${host_extra_objs} ${extra_objs}"
1200 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1202 # Default the target-machine variables that were not explicitly set.
1203 if test x"$tm_file" = x
1204 then tm_file=$cpu_type/$cpu_type.h; fi
1206 if test x"$extra_headers" = x
1207 then extra_headers=; fi
1209 if test x$md_file = x
1210 then md_file=$cpu_type/$cpu_type.md; fi
1212 if test x$out_file = x
1213 then out_file=$cpu_type/$cpu_type.c; fi
1215 if test x"$tmake_file" = x
1216 then tmake_file=$cpu_type/t-$cpu_type
1219 if test x"$dwarf2" = xyes
1220 then tm_file="$tm_file tm-dwarf2.h"
1223 # Say what files are being used for the output code and MD file.
1224 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1225 echo "Using \`$srcdir/config/$md_file' as machine description file."
1227 # If any of the xm_file variables contain nonexistent files, warn
1228 # about them and drop them.
1231 for x in $build_xm_file; do
1232 if test -f $srcdir/config/$x
1234 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1240 for x in $host_xm_file; do
1241 if test -f $srcdir/config/$x
1243 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1249 for x in $xm_file; do
1250 if test -f $srcdir/config/$x
1252 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1258 for f in $tm_file; do
1261 if test $count = ax; then
1262 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1264 echo "Using the following target machine macro files:"
1265 for f in $tm_file; do
1266 echo " $srcdir/config/$f"
1270 if test x$need_64bit_hwint = xyes; then
1271 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1272 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1275 if test x$use_long_long_for_widest_fast_int = xyes; then
1276 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1277 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1278 efficiently supported by the host hardware.])
1282 for f in $host_xm_file; do
1285 if test $count = a; then
1287 elif test $count = ax; then
1288 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1290 echo "Using the following host machine macro files:"
1291 for f in $host_xm_file; do
1292 echo " $srcdir/config/$f"
1295 echo "Using ${out_host_hook_obj} for host machine hooks."
1297 if test "$host_xm_file" != "$build_xm_file"; then
1299 for f in $build_xm_file; do
1302 if test $count = a; then
1304 elif test $count = ax; then
1305 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1307 echo "Using the following build machine macro files:"
1308 for f in $build_xm_file; do
1309 echo " $srcdir/config/$f"
1316 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1317 gcc_cv_mcontext_underscores,
1319 #include <sys/cdefs.h>
1320 #include <sys/signal.h>
1321 #include <ucontext.h>
1322 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1324 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1325 if test $gcc_cv_mcontext_underscores = yes; then
1326 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1327 [mcontext_t fields start with __])
1336 # Check if a valid thread package
1337 case ${enable_threads} in
1340 target_thread_file='single'
1344 target_thread_file='single'
1346 aix | dce | gnat | irix | posix | posix95 | rtems | \
1347 single | solaris | vxworks | win32 | mipssde)
1348 target_thread_file=${enable_threads}
1351 echo "${enable_threads} is an unknown thread package" 1>&2
1356 if test x${thread_file} = x; then
1357 # No thread file set by target-specific clauses in config.gcc,
1358 # so use file chosen by default logic above
1359 thread_file=${target_thread_file}
1362 # Make gthr-default.h if we have a thread file.
1364 if test $thread_file != single; then
1365 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1366 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1367 rm -f gthr-default.h-t
1369 mv -f gthr-default.h-t gthr-default.h
1371 gthread_flags=-DHAVE_GTHR_DEFAULT
1373 AC_SUBST(gthread_flags)
1380 if test x$enable___cxa_atexit = xyes || \
1381 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1382 if test x$host = x$target; then
1384 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1385 # keyed to flag_use_cxa_atexit
1390 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1391 [echo "__cxa_atexit can't be enabled on this target"])
1395 # We can't check for __cxa_atexit when building a cross, so assume
1399 if test x$use_cxa_atexit = xyes; then
1400 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1401 [Define if you want to use __cxa_atexit, rather than atexit, to
1402 register C++ destructors for local statics and global objects.
1403 This is essential for fully standards-compliant handling of
1404 destructors, but requires __cxa_atexit in libc.])
1408 # Look for a file containing extra machine modes.
1409 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1410 extra_modes_file='$(srcdir)'/config/${extra_modes}
1411 AC_SUBST(extra_modes_file)
1412 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1413 [Define to the name of a file containing a list of extra machine modes
1414 for this architecture.])
1417 # Convert extra_options into a form suitable for Makefile use.
1420 for f in $extra_options; do
1421 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1422 all_opt_files="$all_opt_files $srcdir/config/$f"
1424 AC_SUBST(extra_opt_files)
1426 # auto-host.h is the file containing items generated by autoconf and is
1427 # the first file included by config.h.
1428 # If host=build, it is correct to have bconfig include auto-host.h
1429 # as well. If host!=build, we are in error and need to do more
1430 # work to find out the build config parameters.
1431 if test x$host = x$build
1433 build_auto=auto-host.h
1435 # We create a subdir, then run autoconf in the subdir.
1436 # To prevent recursion we set host and build for the new
1437 # invocation of configure to the build for this invocation
1444 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1445 *) realsrcdir=../${srcdir};;
1447 saved_CFLAGS="${CFLAGS}"
1448 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1449 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1450 ${realsrcdir}/configure \
1451 --enable-languages=${enable_languages-all} \
1452 --target=$target_alias --host=$build_alias --build=$build_alias
1453 CFLAGS="${saved_CFLAGS}"
1455 # We just finished tests for the build machine, so rename
1456 # the file auto-build.h in the gcc directory.
1457 mv auto-host.h ../auto-build.h
1460 build_auto=auto-build.h
1462 AC_SUBST(build_subdir)
1464 tm_file="${tm_file} defaults.h"
1465 tm_p_file="${tm_p_file} tm-preds.h"
1466 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1467 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1468 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1469 # put this back in temporarily.
1470 xm_file="auto-host.h ansidecl.h ${xm_file}"
1477 # Compile in configure arguments.
1478 if test -f configargs.h ; then
1479 # Being re-configured.
1480 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1481 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1483 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1486 # Double all backslashes and backslash all quotes to turn
1487 # gcc_config_arguments into a C string.
1488 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1489 $gcc_config_arguments
1491 gcc_config_arguments_str=`cat conftest.out`
1494 cat > configargs.h <<EOF
1495 /* Generated automatically. */
1496 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1497 static const char thread_model[] = "$thread_file";
1499 static const struct {
1500 const char *name, *value;
1501 } configure_default_options[] = $configure_default_options;
1506 gcc_BASEVER=`cat $srcdir/BASE-VER`
1507 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1508 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1509 if test -f $srcdir/REVISION ; then
1510 gcc_REVISION=`cat $srcdir/REVISION`
1514 cat > plugin-version.h <<EOF
1515 #include "configargs.h"
1517 static char basever[] = "$gcc_BASEVER";
1518 static char datestamp[] = "$gcc_DATESTAMP";
1519 static char devphase[] = "$gcc_DEVPHASE";
1520 static char revision[] = "$gcc_REVISION";
1522 /* FIXME plugins: We should make the version information more precise.
1523 One way to do is to add a checksum. */
1525 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1527 configuration_arguments};
1531 # Internationalization
1532 ZW_GNU_GETTEXT_SISTER_DIR
1534 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1535 # -liconv on the link line twice.
1536 case "$LIBINTL" in *$LIBICONV*)
1540 AC_ARG_ENABLE(secureplt,
1541 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1544 AC_ARG_ENABLE(leading-mingw64-underscores,
1545 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1546 [Enable leading underscores on 64 bit mingw targets]),
1548 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1549 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1550 [Define if we should use leading underscore on 64 bit mingw targets])])
1553 [ --enable-cld enable -mcld by default for 32bit x86], [],
1556 AC_ARG_ENABLE(frame-pointer,
1557 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1560 linux* | darwin[[8912]]*)
1561 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1563 enable_frame_pointer=no
1566 enable_frame_pointer=yes
1571 # Windows32 Registry support for specifying GCC installation paths.
1572 AC_ARG_ENABLE(win32-registry,
1573 [ --disable-win32-registry
1574 disable lookup of installation paths in the
1575 Registry on Windows hosts
1576 --enable-win32-registry enable registry lookup (default)
1577 --enable-win32-registry=KEY
1578 use KEY instead of GCC version as the last portion
1579 of the registry key],,)
1582 win32 | pe | cygwin* | mingw32* | uwin*)
1583 if test "x$enable_win32_registry" != xno; then
1584 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1587 if test "x$enable_win32_registry" != xno; then
1588 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1589 [Define to 1 if installation paths should be looked up in the Windows
1590 Registry. Ignored on non-Windows hosts.])
1592 if test "x$enable_win32_registry" != xyes \
1593 && test "x$enable_win32_registry" != x; then
1594 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1595 [Define to be the last component of the Windows registry key under which
1596 to look for installation paths. The full key used will be
1597 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1598 The default is the GCC version number.])
1604 # Get an absolute path to the GCC top-level source directory
1605 holddir=`${PWDCMD-pwd}`
1607 topdir=`${PWDCMD-pwd}`
1610 # Conditionalize the makefile for this host machine.
1612 for f in ${host_xmake_file}
1614 if test -f ${srcdir}/config/$f
1616 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1620 # Conditionalize the makefile for this target machine.
1622 for f in ${tmake_file}
1624 if test -f ${srcdir}/config/$f
1626 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1629 tmake_file="${tmake_file_}"
1631 out_object_file=`basename $out_file .c`.o
1633 tm_file_list="options.h"
1634 tm_include_list="options.h insn-constants.h"
1635 for f in $tm_file; do
1638 f=`echo $f | sed 's/^..//'`
1639 tm_file_list="${tm_file_list} $f"
1640 tm_include_list="${tm_include_list} $f"
1643 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1644 tm_include_list="${tm_include_list} $f"
1647 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1648 tm_include_list="${tm_include_list} config/$f"
1655 for f in $tm_p_file; do
1658 tm_p_file_list="${tm_p_file_list} $f"
1659 tm_p_include_list="${tm_p_include_list} $f"
1662 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1663 tm_p_include_list="${tm_p_include_list} config/$f"
1669 for f in $xm_file; do
1672 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1673 xm_include_list="${xm_include_list} $f"
1676 xm_file_list="${xm_file_list} $f"
1677 xm_include_list="${xm_include_list} $f"
1680 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1681 xm_include_list="${xm_include_list} config/$f"
1687 host_xm_include_list=
1688 for f in $host_xm_file; do
1691 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1692 host_xm_include_list="${host_xm_include_list} $f"
1695 host_xm_file_list="${host_xm_file_list} $f"
1696 host_xm_include_list="${host_xm_include_list} $f"
1699 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1700 host_xm_include_list="${host_xm_include_list} config/$f"
1706 for f in $build_xm_file; do
1709 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1710 build_xm_include_list="${build_xm_include_list} $f"
1712 auto-build.h | auto-host.h )
1713 build_xm_file_list="${build_xm_file_list} $f"
1714 build_xm_include_list="${build_xm_include_list} $f"
1717 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1718 build_xm_include_list="${build_xm_include_list} config/$f"
1723 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1724 # cross-compiler which does not use the native headers and libraries.
1725 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1726 CROSS= AC_SUBST(CROSS)
1727 ALL=all.internal AC_SUBST(ALL)
1728 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1730 if test "x$with_build_sysroot" != x; then
1731 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1733 # This value is used, even on a native system, because
1734 # CROSS_SYSTEM_HEADER_DIR is just
1735 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1736 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1739 if test x$host != x$target
1741 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1743 SYSTEM_HEADER_DIR=$build_system_header_dir
1744 case "$host","$target" in
1745 # Darwin crosses can use the host system's libraries and headers,
1746 # because of the fat library support. Of course, it must be the
1747 # same version of Darwin on both sides. Allow the user to
1748 # just say --target=foo-darwin without a version number to mean
1749 # "the version on this system".
1750 *-*-darwin*,*-*-darwin*)
1751 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1752 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1753 if test $hostos = $targetos -o $targetos = darwin ; then
1755 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1760 i?86-*-*,x86_64-*-* \
1761 | powerpc*-*-*,powerpc64*-*-*)
1762 CROSS="$CROSS -DNATIVE_CROSS" ;;
1767 if test "x$with_headers" = x; then
1774 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1775 SYSTEM_HEADER_DIR=$build_system_header_dir
1778 # If this is a cross-compiler that does not
1779 # have its own set of headers then define
1782 # If this is using newlib, without having the headers available now,
1783 # then define inhibit_libc in LIBGCC2_CFLAGS.
1784 # This prevents libgcc2 from containing any code which requires libc
1786 : ${inhibit_libc=false}
1787 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1788 test x$with_newlib = xyes ; } &&
1789 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1792 AC_SUBST(inhibit_libc)
1794 # When building gcc with a cross-compiler, we need to adjust things so
1795 # that the generator programs are still built with the native compiler.
1796 # Also, we cannot run fixincludes.
1798 # These are the normal (build=host) settings:
1799 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1800 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1801 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1802 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1804 # And these apply if build != host, or we are generating coverage data
1805 if test x$build != x$host || test "x$coverage_flags" != x
1807 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1808 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1811 # Expand extra_headers to include complete path.
1812 # This substitutes for lots of t-* files.
1814 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1815 for file in ${extra_headers} ; do
1816 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1819 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1820 if test x"$use_gcc_tgmath" = xyes
1821 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1824 # Define collect2 in Makefile.
1825 case $host_can_use_collect2 in
1827 *) collect2='collect2$(exeext)' ;;
1829 AC_SUBST([collect2])
1831 # Add a definition of USE_COLLECT2 if system wants one.
1832 case $use_collect2 in
1833 no) use_collect2= ;;
1836 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1837 xm_defines="${xm_defines} USE_COLLECT2"
1838 case $host_can_use_collect2 in
1840 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1846 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1847 [Define to the name of the LTO plugin DSO that must be
1848 passed to the linker's -plugin=LIB option.])
1850 # ---------------------------
1851 # Assembler & linker features
1852 # ---------------------------
1854 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1855 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1856 # However when ld-new is first executed from the build tree, libtool will
1857 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1858 # to the build tree. While doing this we need to use the previous-stage
1859 # linker, or we have an infinite loop. The presence of a shell script as
1860 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1861 # the gcc/collect-ld script. So we need to know how libtool works, or
1862 # exec-tool will fail.
1864 m4_defun([_LT_CONFIG_COMMANDS], [])
1867 AC_SUBST(enable_fast_install)
1869 # Identify the assembler which will work hand-in-glove with the newly
1870 # built GCC, so that we can examine its features. This is the assembler
1871 # which will be driven by the driver program.
1873 # If build != host, and we aren't building gas in-tree, we identify a
1874 # build->target assembler and hope that it will have the same features
1875 # as the host->target assembler we'll be using.
1876 gcc_cv_gas_major_version=
1877 gcc_cv_gas_minor_version=
1878 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1880 m4_pattern_allow([AS_FOR_TARGET])dnl
1881 AS_VAR_SET_IF(gcc_cv_as,, [
1882 if test -x "$DEFAULT_ASSEMBLER"; then
1883 gcc_cv_as="$DEFAULT_ASSEMBLER"
1884 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1885 && test -f ../gas/Makefile \
1886 && test x$build = x$host; then
1887 gcc_cv_as=../gas/as-new$build_exeext
1888 elif test -x as$build_exeext; then
1889 # Build using assembler in the current directory.
1890 gcc_cv_as=./as$build_exeext
1891 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1892 gcc_cv_as="$AS_FOR_TARGET"
1894 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1897 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1898 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1899 case "$ORIGINAL_AS_FOR_TARGET" in
1900 ./as | ./as$build_exeext) ;;
1901 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1904 AC_MSG_CHECKING(what assembler to use)
1905 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1906 # Single tree build which includes gas. We want to prefer it
1907 # over whatever linker top-level may have detected, since
1908 # we'll use what we're building after installation anyway.
1909 AC_MSG_RESULT(newly built gas)
1911 _gcc_COMPUTE_GAS_VERSION
1912 in_tree_gas_is_elf=no
1913 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1914 || (grep 'obj_format = multi' ../gas/Makefile \
1915 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1917 in_tree_gas_is_elf=yes
1920 AC_MSG_RESULT($gcc_cv_as)
1924 # Identify the linker which will work hand-in-glove with the newly
1925 # built GCC, so that we can examine its features. This is the linker
1926 # which will be driven by the driver program.
1928 # If build != host, and we aren't building gas in-tree, we identify a
1929 # build->target linker and hope that it will have the same features
1930 # as the host->target linker we'll be using.
1931 gcc_cv_gld_major_version=
1932 gcc_cv_gld_minor_version=
1933 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1934 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1936 AS_VAR_SET_IF(gcc_cv_ld,, [
1937 if test -x "$DEFAULT_LINKER"; then
1938 gcc_cv_ld="$DEFAULT_LINKER"
1939 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1940 && test -f ../ld/Makefile \
1941 && test x$build = x$host; then
1942 gcc_cv_ld=../ld/ld-new$build_exeext
1943 elif test -x collect-ld$build_exeext; then
1944 # Build using linker in the current directory.
1945 gcc_cv_ld=./collect-ld$build_exeext
1946 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1947 gcc_cv_ld="$LD_FOR_TARGET"
1949 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1952 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1953 PLUGIN_LD=`basename $gcc_cv_ld`
1954 AC_ARG_WITH(plugin-ld,
1955 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1956 [if test x"$withval" != x; then
1957 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1958 PLUGIN_LD="$withval"
1960 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1961 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1963 # Check to see if we are using gold instead of ld
1964 AC_MSG_CHECKING(whether we are using gold)
1966 if test x$gcc_cv_ld != x; then
1967 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1968 | grep "GNU gold" > /dev/null; then
1972 AC_MSG_RESULT($ld_is_gold)
1974 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1975 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1976 case "$ORIGINAL_LD_FOR_TARGET" in
1977 ./collect-ld | ./collect-ld$build_exeext) ;;
1978 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1981 AC_MSG_CHECKING(what linker to use)
1982 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1983 # Single tree build which includes ld. We want to prefer it
1984 # over whatever linker top-level may have detected, since
1985 # we'll use what we're building after installation anyway.
1986 AC_MSG_RESULT(newly built ld)
1988 in_tree_ld_is_elf=no
1989 if (grep 'EMUL = .*elf' ../ld/Makefile \
1990 || grep 'EMUL = .*linux' ../ld/Makefile \
1991 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1992 in_tree_ld_is_elf=yes
1994 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
1997 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1998 if test x$gcc_cv_gld_version != x; then
2002 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2003 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2006 AC_MSG_RESULT($gcc_cv_ld)
2010 # Figure out what nm we will be using.
2011 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2012 AS_VAR_SET_IF(gcc_cv_nm,, [
2013 if test -f $gcc_cv_binutils_srcdir/configure.in \
2014 && test -f ../binutils/Makefile \
2015 && test x$build = x$host; then
2016 gcc_cv_nm=../binutils/nm-new$build_exeext
2017 elif test -x nm$build_exeext; then
2018 gcc_cv_nm=./nm$build_exeext
2019 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2020 gcc_cv_nm="$NM_FOR_TARGET"
2022 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2025 AC_MSG_CHECKING(what nm to use)
2026 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2027 # Single tree build which includes binutils.
2028 AC_MSG_RESULT(newly built nm)
2031 AC_MSG_RESULT($gcc_cv_nm)
2035 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2036 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2037 case "$ORIGINAL_NM_FOR_TARGET" in
2038 ./nm | ./nm$build_exeext) ;;
2039 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2043 # Figure out what objdump we will be using.
2044 AS_VAR_SET_IF(gcc_cv_objdump,, [
2045 if test -f $gcc_cv_binutils_srcdir/configure.in \
2046 && test -f ../binutils/Makefile \
2047 && test x$build = x$host; then
2048 # Single tree build which includes binutils.
2049 gcc_cv_objdump=../binutils/objdump$build_exeext
2050 elif test -x objdump$build_exeext; then
2051 gcc_cv_objdump=./objdump$build_exeext
2052 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2053 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2055 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2058 AC_MSG_CHECKING(what objdump to use)
2059 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2060 # Single tree build which includes binutils.
2061 AC_MSG_RESULT(newly built objdump)
2062 elif test x$gcc_cv_objdump = x; then
2063 AC_MSG_RESULT(not found)
2065 AC_MSG_RESULT($gcc_cv_objdump)
2068 # Figure out what readelf we will be using.
2069 AS_VAR_SET_IF(gcc_cv_readelf,, [
2070 if test -f $gcc_cv_binutils_srcdir/configure.in \
2071 && test -f ../binutils/Makefile \
2072 && test x$build = x$host; then
2073 # Single tree build which includes binutils.
2074 gcc_cv_readelf=../binutils/readelf$build_exeext
2075 elif test -x readelf$build_exeext; then
2076 gcc_cv_readelf=./readelf$build_exeext
2078 AC_PATH_PROG(gcc_cv_readelf, readelf)
2081 AC_MSG_CHECKING(what readelf to use)
2082 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2083 # Single tree build which includes binutils.
2084 AC_MSG_RESULT(newly built readelf)
2085 elif test x$gcc_cv_readelf = x; then
2086 AC_MSG_RESULT(not found)
2088 AC_MSG_RESULT($gcc_cv_readelf)
2091 # Figure out what assembler alignment features are present.
2092 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2096 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2097 [Define if your assembler supports .balign and .p2align.])])
2099 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2102 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2103 [Define if your assembler supports specifying the maximum number
2104 of bytes to skip when using the GAS .p2align command.])])
2106 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2109 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2110 [Define if your assembler supports .literal16.])])
2112 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2114 [conftest_label1: .word 0
2116 conftest_label2: .word 0
2118 [if test x$gcc_cv_nm != x; then
2119 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2120 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2121 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2123 else gcc_cv_as_subsection_m1=yes
2125 rm -f conftest.nm1 conftest.nm2
2127 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2128 [Define if your assembler supports .subsection and .subsection -1 starts
2129 emitting at the beginning of your section.])])
2131 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2134 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2136 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2138 [ .weakref foobar, barfnot],,
2139 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2141 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2144 .NSUBSPA $CODE$,COMDAT],,
2145 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2147 # .hidden needs to be supported in both the assembler and the linker,
2148 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2149 # This is irritatingly difficult to feature test for; we have to check the
2150 # date string after the version number. If we've got an in-tree
2151 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2153 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2154 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2158 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2159 # STV_HIDDEN, so disable .hidden support if so.
2162 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2163 cat > conftest.s <<EOF
2170 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2171 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2172 grep '\.hidden default' > /dev/null; then
2175 gcc_cv_as_hidden=yes
2178 # Assume bug is present if objdump is missing.
2183 gcc_cv_as_hidden=yes
2187 # gnu_indirect_function type is an extension proposed at
2188 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2189 # selection of function implementation
2190 AC_ARG_ENABLE(gnu-indirect-function,
2191 [AS_HELP_STRING([--enable-gnu-indirect-function],
2192 [enable the use of the @gnu_indirect_function to glibc systems])],
2193 [case $enable_gnu_indirect_function in
2195 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2196 Valid choices are 'yes' and 'no'.]) ;;
2198 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2199 if test x$enable_gnu_indirect_function = xyes; then
2200 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2201 [Define if your system supports gnu indirect functions.])
2205 if test $in_tree_ld != yes ; then
2206 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2207 if test x"$ld_is_gold" = xyes; then
2208 gcc_cv_ld_hidden=yes
2209 elif echo "$ld_ver" | grep GNU > /dev/null; then
2210 ld_vers=`echo $ld_ver | sed -n \
2211 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2212 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2213 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2214 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2215 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2220 # Solaris 2 ld -V output looks like this for a regular version:
2222 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2224 # but test versions add stuff at the end:
2226 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2228 ld_ver=`$gcc_cv_ld -V 2>&1`
2229 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2230 ld_vers=`echo $ld_ver | sed -n \
2231 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2232 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2233 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2241 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2242 [[if test $in_tree_ld = yes ; then
2244 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2245 && test $in_tree_ld_is_elf = yes; then
2246 gcc_cv_ld_hidden=yes
2249 gcc_cv_ld_hidden=yes
2250 if echo "$ld_ver" | grep GNU > /dev/null; then
2251 if test 0"$ld_date" -lt 20020404; then
2252 if test -n "$ld_date"; then
2253 # If there was date string, but was earlier than 2002-04-04, fail
2255 elif test -z "$ld_vers"; then
2256 # If there was no date string nor ld version number, something is wrong
2259 test -z "$ld_vers_patch" && ld_vers_patch=0
2260 if test "$ld_vers_major" -lt 2; then
2262 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2263 gcc_cv_ld_hidden="no"
2264 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2271 hppa64*-*-hpux* | ia64*-*-hpux*)
2272 gcc_cv_ld_hidden=yes
2275 # .hidden support was backported to Solaris 8, starting with ld
2277 if test "$ld_vers_minor" -ge 276; then
2278 gcc_cv_ld_hidden=yes
2283 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2284 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2285 # .symbolic was only added in Solaris 9 12/02.
2286 gcc_cv_ld_hidden=yes
2294 libgcc_visibility=no
2295 AC_SUBST(libgcc_visibility)
2296 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2297 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2298 libgcc_visibility=yes
2299 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2300 [Define if your assembler and linker support .hidden.])
2303 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2304 gcc_cv_ld_ro_rw_mix=unknown
2305 if test $in_tree_ld = yes ; then
2306 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2307 && test $in_tree_ld_is_elf = yes; then
2308 gcc_cv_ld_ro_rw_mix=read-write
2310 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2311 echo '.section myfoosect, "a"' > conftest1.s
2312 echo '.section myfoosect, "aw"' > conftest2.s
2313 echo '.byte 1' >> conftest2.s
2314 echo '.section myfoosect, "a"' > conftest3.s
2315 echo '.byte 0' >> conftest3.s
2316 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2317 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2318 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2319 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2320 conftest2.o conftest3.o > /dev/null 2>&1; then
2321 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2322 | sed -e '/myfoosect/!d' -e N`
2323 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2324 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2325 gcc_cv_ld_ro_rw_mix=read-only
2327 gcc_cv_ld_ro_rw_mix=read-write
2332 rm -f conftest.* conftest[123].*
2335 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2336 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2337 [Define if your linker links a mix of read-only
2338 and read-write sections into a read-write section.])
2340 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2342 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2343 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2351 [[# GAS versions before 2.11 do not support uleb128,
2352 # despite appearing to.
2353 # ??? There exists an elf-specific test that will crash
2354 # the assembler. Perhaps it's better to figure out whether
2355 # arbitrary sections are supported and try the test.
2356 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2357 if echo "$as_ver" | grep GNU > /dev/null; then
2358 as_vers=`echo $as_ver | sed -n \
2359 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2360 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2361 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2362 if test $as_major -eq 2 && test $as_minor -lt 11
2364 else gcc_cv_as_leb128=yes
2367 [AC_DEFINE(HAVE_AS_LEB128, 1,
2368 [Define if your assembler supports .sleb128 and .uleb128.])])
2370 # Check if we have assembler support for unwind directives.
2371 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2378 .cfi_escape 1, 2, 3, 4, 5
2382 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2383 # read-only and read-write sections, we need to make sure that the
2384 # assembler used emits read-write .eh_frame sections.
2385 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2386 if test "x$gcc_cv_objdump" != x; then
2387 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2388 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2389 gcc_cv_as_cfi_directive=no
2392 i?86-*-solaris2.1[[0-9]]*)
2393 # On Solaris/x86, make sure that GCC and gas agree on using
2394 # read-only .eh_frame sections for 64-bit.
2395 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2396 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2397 sed -e /.eh_frame/!d -e N | \
2398 grep READONLY > /dev/null; then
2399 gcc_cv_as_cfi_directive=yes
2401 gcc_cv_as_cfi_directive=no
2405 gcc_cv_as_cfi_directive=yes
2410 # no objdump, err on the side of caution
2411 gcc_cv_as_cfi_directive=no
2414 gcc_cv_as_cfi_directive=yes
2418 gcc_cv_as_cfi_directive=yes
2421 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2422 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2426 .cfi_adjust_cfa_offset 64
2428 .cfi_adjust_cfa_offset 128
2431 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2432 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2433 gcc_cv_as_cfi_advance_working=yes
2437 # no objdump, err on the side of caution
2438 gcc_cv_as_cfi_advance_working=no
2440 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2441 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2442 [`if test $gcc_cv_as_cfi_directive = yes \
2443 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2444 [Define 0/1 if your assembler supports CFI directives.])
2446 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2447 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2448 gcc_cv_as_cfi_personality_directive, ,,
2451 .cfi_personality 0, symbol
2453 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2454 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2455 then echo 1; else echo 0; fi`],
2456 [Define 0/1 if your assembler supports .cfi_personality.])
2458 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2459 gcc_cv_as_cfi_sections_directive, ,,
2461 .cfi_sections .debug_frame, .eh_frame
2465 win32 | pe | cygwin* | mingw32* | uwin*)
2466 # Need to check that we generated the correct relocation for the
2467 # .debug_frame section. This was fixed for binutils 2.21.
2468 gcc_cv_as_cfi_sections_directive=no
2469 if test "x$gcc_cv_objdump" != x; then
2470 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2471 grep secrel > /dev/null; then
2472 gcc_cv_as_cfi_sections_directive=yes
2477 gcc_cv_as_cfi_sections_directive=yes
2480 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2481 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2482 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2483 then echo 1; else echo 0; fi`],
2484 [Define 0/1 if your assembler supports .cfi_sections.])
2486 # GAS versions up to and including 2.11.0 may mis-optimize
2488 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2496 .section .eh_frame,"aw",@progbits
2498 .4byte .LECIE1-.LSCIE1
2512 .4byte .LEFDE1-.LASFDE1
2514 .4byte .LASFDE1-__FRAME_BEGIN__
2522 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2523 cat > conftest.lit <<EOF
2524 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2525 0010 01000000 12000000 18000000 00000000 ................
2526 0020 08000000 04080000 0044 .........D @&t@
2528 cat > conftest.big <<EOF
2529 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2530 0010 00000001 00000012 00000018 00000000 ................
2531 0020 00000008 04000000 0844 .........D @&t@
2533 # If the assembler didn't choke, and we can objdump,
2534 # and we got the correct data, then succeed.
2535 # The text in the here-document typically retains its unix-style line
2536 # endings, while the output of objdump will use host line endings.
2537 # Therefore, use diff -b for the comparisons.
2538 if test x$gcc_cv_objdump != x \
2539 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2540 | tail -3 > conftest.got \
2541 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2542 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2544 gcc_cv_as_eh_frame=yes
2545 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2546 gcc_cv_as_eh_frame=buggy
2548 # Uh oh, what do we do now?
2549 gcc_cv_as_eh_frame=no
2552 if test $gcc_cv_as_eh_frame = buggy; then
2553 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2554 [Define if your assembler mis-optimizes .eh_frame data.])
2557 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2558 [elf,2,12,0], [--fatal-warnings],
2559 [.section .rodata.str, "aMS", @progbits, 1])
2560 if test $gcc_cv_as_shf_merge = no; then
2561 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2562 [elf,2,12,0], [--fatal-warnings],
2563 [.section .rodata.str, "aMS", %progbits, 1])
2565 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2566 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2567 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2569 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2570 [elf,2,16,0], [--fatal-warnings],
2571 [.section .text,"axG",@progbits,.foo,comdat])
2572 if test $gcc_cv_as_comdat_group = yes; then
2573 gcc_cv_as_comdat_group_percent=no
2575 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2576 [elf,2,16,0], [--fatal-warnings],
2577 [.section .text,"axG",%progbits,.foo,comdat])
2579 if test x"$ld_is_gold" = xyes; then
2581 elif test $in_tree_ld = yes ; then
2583 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2584 && test $in_tree_ld_is_elf = yes; then
2587 elif echo "$ld_ver" | grep GNU > /dev/null; then
2589 if test 0"$ld_date" -lt 20050308; then
2590 if test -n "$ld_date"; then
2591 # If there was date string, but was earlier than 2005-03-08, fail
2593 elif test "$ld_vers_major" -lt 2; then
2595 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2602 *-*-solaris2.1[1-9]*)
2603 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2604 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2607 # FIXME: Maybe need to refine later when COMDAT group support with
2608 # Sun as is implemented.
2609 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2616 # Assume linkers other than GNU ld don't support COMDAT group.
2622 # Allow overriding the automatic COMDAT group tests above.
2623 AC_ARG_ENABLE(comdat,
2624 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2625 [comdat_group="$enable_comdat"])
2626 if test $comdat_group = no; then
2627 gcc_cv_as_comdat_group=no
2628 gcc_cv_as_comdat_group_percent=no
2630 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2631 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2632 [Define 0/1 if your assembler and linker support COMDAT groups.])
2634 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2635 gcc_cv_as_discriminator,
2639 .loc 1 1 0 discriminator 1],,
2640 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2641 [Define if your assembler supports the .loc discriminator sub-directive.])])
2643 # Thread-local storage - the check is heavily parameterized.
2652 .section ".tdata","awT",@progbits
2655 ldq $27,__tls_get_addr($29) !literal!1
2656 lda $16,foo($29) !tlsgd!1
2657 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2658 ldq $27,__tls_get_addr($29) !literal!2
2659 lda $16,foo($29) !tlsldm!2
2660 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2661 ldq $1,foo($29) !gotdtprel
2662 ldah $2,foo($29) !dtprelhi
2663 lda $3,foo($2) !dtprello
2664 lda $4,foo($29) !dtprel
2665 ldq $1,foo($29) !gottprel
2666 ldah $2,foo($29) !tprelhi
2667 lda $3,foo($2) !tprello
2668 lda $4,foo($29) !tprel'
2671 tls_as_opt=--fatal-warnings
2673 cris-*-*|crisv32-*-*)
2675 .section ".tdata","awT",@progbits
2682 tls_as_opt=--fatal-warnings
2686 .section ".tdata","awT",@progbits
2698 .section ".tdata","awT",@progbits
2702 addil LT%foo-$tls_gdidx$,gp
2703 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2706 addil LT%foo-$tls_ldidx$,gp
2708 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2709 addil LR%foo-$tls_dtpoff$,%ret0
2710 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2712 addil LT%foo-$tls_ieoff$,gp
2713 ldw RT%foo-$tls_ieoff$(%r1),%t2
2716 addil LR%foo-$tls_leoff$,%t1
2717 ldo RR%foo-$tls_leoff$(%r1),%t2'
2720 tls_as_opt=--fatal-warnings
2724 .section ".tdata","awT",%progbits
2737 i[34567]86-*-solaris2.*)
2739 tga_func=___tls_get_addr
2745 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2747 .section .tdata,"awt",@progbits'
2751 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2752 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2756 .section ".tdata","awT",@progbits'
2759 tls_as_opt="--fatal-warnings"
2761 conftest_s="$conftest_s
2765 leal foo@tlsgd(,%ebx,1), %eax
2766 leal foo@tlsldm(%ebx), %eax
2767 leal foo@dtpoff(%eax), %edx
2768 movl foo@gottpoff(%ebx), %eax
2769 subl foo@gottpoff(%ebx), %eax
2770 addl foo@gotntpoff(%ebx), %eax
2771 movl foo@indntpoff, %eax
2772 movl \$foo@tpoff, %eax
2773 subl \$foo@tpoff, %eax
2774 leal foo@ntpoff(%ecx), %eax"
2778 .section ".tdata","awT",@progbits
2782 leaq foo@TLSGD(%rip), %rdi
2783 leaq foo@TLSLD(%rip), %rdi
2784 leaq foo@DTPOFF(%rax), %rdx
2785 movq foo@GOTTPOFF(%rip), %rax
2786 movq $foo@TPOFF, %rax'
2789 tls_as_opt=--fatal-warnings
2793 .section ".tdata","awT",@progbits
2796 addl r16 = @ltoff(@dtpmod(foo#)), gp
2797 addl r17 = @ltoff(@dtprel(foo#)), gp
2798 addl r18 = @ltoff(@tprel(foo#)), gp
2799 addl r19 = @dtprel(foo#), gp
2800 adds r21 = @dtprel(foo#), r13
2801 movl r23 = @dtprel(foo#)
2802 addl r20 = @tprel(foo#), gp
2803 adds r22 = @tprel(foo#), r13
2804 movl r24 = @tprel(foo#)'
2807 tls_as_opt=--fatal-warnings
2811 .section .tdata,"awT",@progbits
2815 addiu $4, $28, %tlsgd(x)
2816 addiu $4, $28, %tlsldm(x)
2817 lui $4, %dtprel_hi(x)
2818 addiu $4, $4, %dtprel_lo(x)
2819 lw $4, %gottprel(x)($28)
2820 lui $4, %tprel_hi(x)
2821 addiu $4, $4, %tprel_lo(x)'
2824 tls_as_opt='-32 --fatal-warnings'
2828 .section .tdata,"awT",@progbits
2833 move.l x@TLSGD(%a5),%a0
2834 move.l x@TLSLDM(%a5),%a0
2835 move.l x@TLSLDO(%a5),%a0
2836 move.l x@TLSIE(%a5),%a0
2837 move.l x@TLSLE(%a5),%a0'
2840 tls_as_opt='--fatal-warnings'
2844 .section ".tdata","awT",@progbits
2852 addi 3,31,ld0@got@tlsgd
2854 addi 3,31,x1@got@tlsld
2857 addis 9,3,x2@dtprel@ha
2858 addi 9,9,x2@dtprel@l
2859 lwz 9,x3@got@tprel(31)
2862 addis 9,2,x2@tprel@ha
2863 addi 9,9,x2@tprel@l'
2866 tls_as_opt="-a32 --fatal-warnings"
2870 .section ".tdata","awT",@progbits
2878 addi 3,2,ld0@got@tlsgd
2884 addi 3,2,x1@got@tlsld
2890 addis 9,3,x2@dtprel@ha
2891 addi 9,9,x2@dtprel@l
2894 ld 9,x3@got@dtprel(2)
2900 tls_as_opt="-a64 --fatal-warnings"
2904 .section ".tdata","awT",@progbits
2913 l %r1,foo@GOTNTPOFF(%r12)
2914 l %r1,0(%r1):tls_load:foo
2915 bas %r14,0(%r1,%r13):tls_gdcall:foo
2916 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2919 tls_as_opt="-m31 --fatal-warnings"
2923 .section ".tdata","awT",@progbits
2931 lg %r1,foo@GOTNTPOFF(%r12)
2932 larl %r1,foo@INDNTPOFF
2933 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2934 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2937 tls_as_opt="-m64 -Aesame --fatal-warnings"
2939 sh-*-* | sh[34]-*-*)
2941 .section ".tdata","awT",@progbits
2951 tls_as_opt=--fatal-warnings
2955 sparc*-sun-solaris2.*)
2957 tga_func=__tls_get_addr
2963 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2965 .section ".tdata",#alloc,#write,#tls'
2970 .section ".tdata","awT",@progbits'
2973 tls_as_opt="-32 --fatal-warnings"
2975 conftest_s="$conftest_s
2978 sethi %tgd_hi22(foo), %o0
2979 add %o0, %tgd_lo10(foo), %o1
2980 add %l7, %o1, %o0, %tgd_add(foo)
2981 call __tls_get_addr, %tgd_call(foo)
2982 sethi %tldm_hi22(foo), %l1
2983 add %l1, %tldm_lo10(foo), %l2
2984 add %l7, %l2, %o0, %tldm_add(foo)
2985 call __tls_get_addr, %tldm_call(foo)
2986 sethi %tldo_hix22(foo), %l3
2987 xor %l3, %tldo_lox10(foo), %l4
2988 add %o0, %l4, %l5, %tldo_add(foo)
2989 sethi %tie_hi22(foo), %o3
2990 add %o3, %tie_lo10(foo), %o3
2991 ld [%l7 + %o3], %o2, %tie_ld(foo)
2992 add %g7, %o2, %o4, %tie_add(foo)
2993 sethi %tle_hix22(foo), %l1
2994 xor %l1, %tle_lox10(foo), %o5
2995 ld [%g7 + %o5], %o1"
2999 .section ".tdata","awT",@progbits
3002 movi a8, foo@TLSFUNC
3003 movi a10, foo@TLSARG
3004 callx8.tls a8, foo@TLSCALL'
3011 if test "x$enable_tls" = xno ; then
3012 : # TLS explicitly disabled.
3013 elif test "x$enable_tls" = xyes ; then
3014 set_have_as_tls=yes # TLS explicitly enabled.
3015 elif test -z "$tls_first_major"; then
3016 : # If we don't have a check, assume no support.
3018 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3019 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3020 [set_have_as_tls=yes])
3024 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3025 # with TLS support are in use, native TLS cannot work.
3029 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3030 # gld with TLS support are in use, native TLS cannot work.
3033 # TLS was introduced in the Solaris 9 FCS release and backported to
3034 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3035 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3036 # ld and GCC don't support any longer.
3038 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3040 # Check ld and ld.so.1 TLS support.
3041 if echo "$ld_ver" | grep GNU > /dev/null; then
3042 # Assume all interesting versions of GNU ld have TLS support.
3043 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3047 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3049 min_tls_ld_vers_minor=280
3051 # Solaris 8/SPARC ld has TLS support since version 1.272.
3052 sparc*-*-solaris2.8)
3053 min_tls_ld_vers_minor=272
3055 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3057 min_tls_ld_vers_minor=374
3059 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3060 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3061 min_tls_ld_vers_minor=343
3064 if test "$ld_vers_major" -gt 1 || \
3065 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3071 AC_MSG_RESULT($ld_tls_support)
3074 save_LDFLAGS="$LDFLAGS"
3078 AC_MSG_CHECKING(alternate thread library)
3080 # TLS support was backported to Solaris 8 patches, but only lives in
3081 # the alternate thread library which became the default in Solaris 9.
3082 # We want to always use that, irrespective of TLS support.
3084 # Take multilib subdir into account. There's no spec to handle
3085 # this. The 64 symlink exists since Solaris 8.
3086 lwp_dir=/usr/lib/lwp
3087 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3088 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3095 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3096 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3097 [Define to the linker flags to use for -pthread.])
3098 AC_MSG_RESULT($lwp_dir)
3100 AC_MSG_CHECKING(library containing $tga_func)
3101 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3102 # (32-bit x86) only lived in libthread, so check for that. Keep
3103 # set_have_as_tls if found, disable if not.
3104 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3105 # Clear LIBS if we cannot support TLS.
3106 if test $set_have_as_tls = no; then
3109 # Always define LIB_TLS_SPEC, even without TLS support.
3110 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3111 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3112 AC_MSG_RESULT($LIBS)
3115 LDFLAGS="$save_LDFLAGS"
3118 if test $set_have_as_tls = yes ; then
3119 AC_DEFINE(HAVE_AS_TLS, 1,
3120 [Define if your assembler and linker support thread-local storage.])
3123 # Target-specific assembler checks.
3125 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3126 gcc_cv_ld_static_dynamic=no
3127 gcc_cv_ld_static_option='-Bstatic'
3128 gcc_cv_ld_dynamic_option='-Bdynamic'
3129 if test $in_tree_ld = yes ; then
3130 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3131 gcc_cv_ld_static_dynamic=yes
3133 elif test x$gcc_cv_ld != x; then
3134 # Check if linker supports -Bstatic/-Bdynamic option
3135 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3136 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3137 gcc_cv_ld_static_dynamic=yes
3140 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3142 gcc_cv_ld_static_dynamic=yes
3143 gcc_cv_ld_static_option="-noso"
3144 gcc_cv_ld_dynamic_option="-so_archive"
3146 # HP-UX ld uses -a flags to select between shared and archive.
3148 if test x"$gnu_ld" = xno; then
3149 gcc_cv_ld_static_dynamic=yes
3150 gcc_cv_ld_static_option="-aarchive_shared"
3151 gcc_cv_ld_dynamic_option="-adefault"
3154 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3156 gcc_cv_ld_static_dynamic=yes
3158 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3160 gcc_cv_ld_static_dynamic=yes
3165 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3166 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3167 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3168 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3169 [Define to the linker option to disable use of shared objects.])
3170 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3171 [Define to the linker option to enable use of shared objects.])
3173 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3175 if test x"$demangler_in_ld" = xyes; then
3176 AC_MSG_CHECKING(linker --demangle support)
3177 gcc_cv_ld_demangle=no
3178 if test $in_tree_ld = yes; then
3179 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3180 gcc_cv_ld_demangle=yes
3182 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3183 # Check if the GNU linker supports --demangle option
3184 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3185 gcc_cv_ld_demangle=yes
3188 if test x"$gcc_cv_ld_demangle" = xyes; then
3189 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3190 [Define if your linker supports --demangle option.])
3192 AC_MSG_RESULT($gcc_cv_ld_demangle)
3195 AC_MSG_CHECKING(linker plugin support)
3196 gcc_cv_lto_plugin=no
3197 if test -f liblto_plugin.la; then
3198 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET=" = x"$gcc_cv_ld"; then
3199 if test x"$ld_is_gold" = xyes; then
3200 gcc_cv_lto_plugin=yes
3201 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then \
3202 gcc_cv_lto_plugin=yes
3204 # Check if the linker supports --plugin-opt option
3205 elif $ORIGINAL_PLUGIN_LD_FOR_TARGET --help 2>/dev/null | grep plugin-opt > /dev/null; then
3206 gcc_cv_lto_plugin=yes
3209 if test x"$gcc_cv_lto_plugin" = xyes; then
3210 AC_DEFINE(HAVE_LTO_PLUGIN, 1,
3211 [Define if your linker supports plugin.])
3213 AC_MSG_RESULT($gcc_cv_lto_plugin)
3216 # All TARGET_ABI_OSF targets.
3217 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3218 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3219 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3222 extbl $3, $2, $3 !lituse_bytoff!1
3223 ldq $2, a($29) !literal!1
3224 ldq $4, b($29) !literal!2
3225 ldq_u $3, 0($2) !lituse_base!1
3226 ldq $27, f($29) !literal!5
3227 jsr $26, ($27), f !lituse_jsr!5
3228 ldah $29, 0($26) !gpdisp!3
3229 lda $0, c($29) !gprel
3230 ldah $1, d($29) !gprelhigh
3231 lda $1, d($1) !gprellow
3232 lda $29, 0($29) !gpdisp!3],,
3233 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3234 [Define if your assembler supports explicit relocations.])])
3235 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3236 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3239 ldq $27, a($29) !literal!1
3240 jsr $26, ($27), a !lituse_jsrdirect!1],,
3241 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3242 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3246 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3247 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3248 [-no-mul-bug-abort], [.text],,
3249 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3250 [Define if your assembler supports the -no-mul-bug-abort option.])])
3254 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3255 [.register %g2, #scratch],,
3256 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3257 [Define if your assembler supports .register.])])
3259 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3261 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3262 [Define if your assembler supports -relax option.])])
3264 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3265 gcc_cv_as_sparc_gotdata_op,,
3271 sethi %gdop_hix22(foo), %g1
3272 xor %g1, %gdop_lox10(foo), %g1
3273 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3274 [if test x$gcc_cv_ld != x \
3275 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3276 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3277 if test x$gcc_cv_objdump != x; then
3278 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3279 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3280 gcc_cv_as_sparc_gotdata_op=no
3282 gcc_cv_as_sparc_gotdata_op=yes
3286 gcc_cv_as_sparc_gotdata_op=yes
3290 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3291 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3293 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3294 gcc_cv_as_sparc_ua_pcrel,,
3302 .uaword %r_disp32(foo)],
3303 [if test x$gcc_cv_ld != x \
3304 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3305 gcc_cv_as_sparc_ua_pcrel=yes
3308 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3309 [Define if your assembler and linker support unaligned PC relative relocs.])
3311 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3312 gcc_cv_as_sparc_ua_pcrel_hidden,,
3317 .uaword %r_disp32(foo)
3318 .byte 0x32, 0x33, 0x34
3323 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3324 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3325 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3326 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3327 if $gcc_cv_objdump -R conftest 2> /dev/null \
3328 | grep 'DISP32' > /dev/null 2>&1; then
3331 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3335 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3336 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3337 ]) # unaligned pcrel relocs
3339 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3340 gcc_cv_as_sparc_offsetable_lo10,,
3343 or %g1, %lo(ab) + 12, %g1
3344 or %g1, %lo(ab + 12), %g1],
3345 [if test x$gcc_cv_objdump != x \
3346 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3347 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3348 gcc_cv_as_sparc_offsetable_lo10=yes
3350 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3351 [Define if your assembler supports offsetable %lo().])])
3355 i[34567]86-*-* | x86_64-*-*)
3359 # Full C++ conformance when using a shared libstdc++-v3 requires some
3360 # support from the Cygwin DLL, which in more recent versions exports
3361 # wrappers to aid in interposing and redirecting operators new, delete,
3362 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3363 # are configuring for a version of Cygwin that exports the wrappers.
3364 if test x$host = x$target; then
3365 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3367 # Can't check presence of libc functions during cross-compile, so
3368 # we just have to assume we're building for an up-to-date target.
3369 gcc_ac_cygwin_dll_wrappers=yes
3371 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3372 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3373 [Define if you want to generate code by default that assumes that the
3374 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3377 cygwin* | pe | mingw32*)
3378 # Recent binutils allows the three-operand form of ".comm" on PE. This
3379 # definition is used unconditionally to initialise the default state of
3380 # the target option variable that governs usage of the feature.
3381 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3382 [2,19,52],,[.comm foo,1,32])
3383 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3384 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3385 [Define if your assembler supports specifying the alignment
3386 of objects allocated using the GAS .comm command.])
3387 # Used for DWARF 2 in PE
3388 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3389 gcc_cv_as_ix86_pe_secrel32,
3395 [if test x$gcc_cv_ld != x \
3396 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3397 gcc_cv_as_ix86_pe_secrel32=yes
3400 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3401 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3402 # Test if the assembler supports the extended form of the .section
3403 # directive that specifies section alignment. LTO support uses this,
3404 # but normally only after installation, so we warn but don't fail the
3405 # configure if LTO is enabled but the assembler does not support it.
3406 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3407 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3408 if test x$gcc_cv_as_section_has_align != xyes; then
3409 case ",$enable_languages," in
3411 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3418 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3419 gcc_cv_as_ix86_filds,,,
3420 [filds mem; fists mem],,
3421 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3422 [Define if your assembler uses filds and fists mnemonics.])])
3424 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3425 gcc_cv_as_ix86_fildq,,,
3426 [fildq mem; fistpq mem],,
3427 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3428 [Define if your assembler uses fildq and fistq mnemonics.])])
3430 gcc_GAS_CHECK_FEATURE([cmov syntax],
3431 gcc_cv_as_ix86_cmov_sun_syntax,,,
3432 [cmovl.l %edx, %eax],,
3433 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3434 [Define if your assembler supports the Sun syntax for cmov.])])
3436 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3437 gcc_cv_as_ix86_ffreep,,,
3439 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3440 [Define if your assembler supports the ffreep mnemonic.])])
3442 gcc_GAS_CHECK_FEATURE([.quad directive],
3443 gcc_cv_as_ix86_quad,,,
3445 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3446 [Define if your assembler supports the .quad directive.])])
3448 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3449 gcc_cv_as_ix86_sahf,,,
3452 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3453 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3455 gcc_GAS_CHECK_FEATURE([swap suffix],
3456 gcc_cv_as_ix86_swap,,,
3457 [movl.s %esp, %ebp],,
3458 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3459 [Define if your assembler supports the swap suffix.])])
3461 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3462 gcc_cv_as_ix86_diff_sect_delta,,,
3470 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3471 [Define if your assembler supports the subtraction of symbols in different sections.])])
3473 # These two are used unconditionally by i386.[ch]; it is to be defined
3474 # to 1 if the feature is present, 0 otherwise.
3475 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3476 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3482 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3483 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3484 [Define true if the assembler supports '.long foo@GOTOFF'.])
3486 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3487 gcc_cv_as_ix86_rep_lock_prefix,,,
3489 lock addl %edi, (%eax,%esi)
3490 lock orl $0, (%esp)],,
3491 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3492 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3497 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3498 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3500 addl r15 = @ltoffx(x#), gp
3502 ld8.mov r16 = [[r15]], x#],,
3503 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3504 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3510 *-*-aix*) conftest_s=' .machine "pwr5"
3514 gcc_GAS_CHECK_FEATURE([.machine directive support],
3515 gcc_cv_as_machine_directive,,,
3516 [ .machine ppc7400])
3517 if test x$gcc_cv_as_machine_directive != xyes; then
3518 echo "*** This target requires an assembler supporting \".machine\"" >&2
3519 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3520 test x$build = x$target && exit 1
3524 *) conftest_s=' .machine power4
3529 gcc_GAS_CHECK_FEATURE([mfcr field support],
3530 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3532 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3533 [Define if your assembler supports mfcr field.])])
3536 *-*-aix*) conftest_s=' .machine "pwr5"
3539 *) conftest_s=' .machine power5
3544 gcc_GAS_CHECK_FEATURE([popcntb support],
3545 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3547 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3548 [Define if your assembler supports popcntb field.])])
3551 *-*-aix*) conftest_s=' .machine "pwr5x"
3554 *) conftest_s=' .machine power5
3559 gcc_GAS_CHECK_FEATURE([fp round support],
3560 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3562 [AC_DEFINE(HAVE_AS_FPRND, 1,
3563 [Define if your assembler supports fprnd.])])
3566 *-*-aix*) conftest_s=' .machine "pwr6"
3569 *) conftest_s=' .machine power6
3574 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3575 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3577 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3578 [Define if your assembler supports mffgpr and mftgpr.])])
3581 *-*-aix*) conftest_s=' .csect .text[[PR]]
3583 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3587 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3588 *) conftest_s=' .text
3590 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3593 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3594 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3596 [AC_DEFINE(HAVE_AS_REL16, 1,
3597 [Define if your assembler supports R_PPC_REL16 relocs.])])
3600 *-*-aix*) conftest_s=' .machine "pwr6"
3603 *) conftest_s=' .machine power6
3608 gcc_GAS_CHECK_FEATURE([compare bytes support],
3609 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3611 [AC_DEFINE(HAVE_AS_CMPB, 1,
3612 [Define if your assembler supports cmpb.])])
3615 *-*-aix*) conftest_s=' .machine "pwr6"
3618 *) conftest_s=' .machine power6
3623 gcc_GAS_CHECK_FEATURE([decimal float support],
3624 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3626 [AC_DEFINE(HAVE_AS_DFP, 1,
3627 [Define if your assembler supports DFP instructions.])])
3630 *-*-aix*) conftest_s=' .machine "pwr7"
3633 *) conftest_s=' .machine power7
3638 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3639 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3641 [AC_DEFINE(HAVE_AS_VSX, 1,
3642 [Define if your assembler supports VSX instructions.])])
3645 *-*-aix*) conftest_s=' .machine "pwr7"
3648 *) conftest_s=' .machine power7
3653 gcc_GAS_CHECK_FEATURE([popcntd support],
3654 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3656 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3657 [Define if your assembler supports POPCNTD instructions.])])
3660 *-*-aix*) conftest_s=' .csect .text[[PR]]
3662 *) conftest_s=' .text
3666 gcc_GAS_CHECK_FEATURE([lwsync support],
3667 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3669 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3670 [Define if your assembler supports LWSYNC instructions.])])
3673 *-*-aix*) conftest_s=' .machine "476"
3676 *) conftest_s=' .machine "476"
3681 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3682 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3684 [AC_DEFINE(HAVE_AS_DCI, 1,
3685 [Define if your assembler supports the DCI/ICI instructions.])])
3687 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3688 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3689 [.gnu_attribute 4,1],,
3690 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3691 [Define if your assembler supports .gnu_attribute.])])
3693 gcc_GAS_CHECK_FEATURE([tls marker support],
3694 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3695 [ bl __tls_get_addr(x@tlsgd)],,
3696 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3697 [Define if your assembler supports arg info for __tls_get_addr.])])
3701 gcc_GAS_CHECK_FEATURE([.ref support],
3702 gcc_cv_as_aix_ref, [2.21.0],,
3703 [ .csect stuff[[rw]]
3709 [AC_DEFINE(HAVE_AS_REF, 1,
3710 [Define if your assembler supports .ref])])
3716 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3717 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3718 [ lw $4,%gp_rel(foo)($4)],,
3719 [if test x$target_cpu_default = x
3720 then target_cpu_default=MASK_EXPLICIT_RELOCS
3721 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3723 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3724 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3725 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3726 [Define if the assembler understands -mno-shared.])])
3728 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3729 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3730 [.gnu_attribute 4,1],,
3731 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3732 [Define if your assembler supports .gnu_attribute.])])
3734 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3735 gcc_cv_as_mips_dtprelword, [2,18,0],,
3736 [.section .tdata,"awT",@progbits
3740 .dtprelword x+0x8000],,
3741 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3742 [Define if your assembler supports .dtprelword.])])
3744 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3745 gcc_cv_as_mips_dspr1_mult,,,
3755 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3756 [Define if your assembler supports DSPR1 mult.])])
3758 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3759 gcc_cv_as_ld_jalr_reloc=no
3760 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3761 if test $in_tree_ld = yes ; then
3762 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3763 && test $in_tree_ld_is_elf = yes; then
3764 gcc_cv_as_ld_jalr_reloc=yes
3766 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3767 echo ' .ent x' > conftest.s
3768 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3769 echo ' ld $25,%call16(y)($28)' >> conftest.s
3770 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3771 echo '1: jalr $25' >> conftest.s
3772 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3773 echo '1: jalr $25' >> conftest.s
3774 echo ' .end x' >> conftest.s
3775 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3776 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3777 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3778 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3779 gcc_cv_as_ld_jalr_reloc=yes
3785 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3786 if test x$target_cpu_default = x; then
3787 target_cpu_default=MASK_RELAX_PIC_CALLS
3789 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3792 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3794 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3795 [gcc_cv_ld_mips_personality_relaxation],
3796 [gcc_cv_ld_mips_personality_relaxation=no
3797 if test $in_tree_ld = yes ; then
3798 if test "$gcc_cv_gld_major_version" -eq 2 \
3799 -a "$gcc_cv_gld_minor_version" -ge 21 \
3800 -o "$gcc_cv_gld_major_version" -gt 2; then
3801 gcc_cv_ld_mips_personality_relaxation=yes
3803 elif test x$gcc_cv_as != x \
3804 -a x$gcc_cv_ld != x \
3805 -a x$gcc_cv_readelf != x ; then
3806 cat > conftest.s <<EOF
3808 .cfi_personality 0x80,indirect_ptr
3815 .section .data,"aw",@progbits
3819 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3820 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3821 if $gcc_cv_readelf -d conftest 2>&1 \
3822 | grep TEXTREL > /dev/null 2>&1; then
3824 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3825 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3828 gcc_cv_ld_mips_personality_relaxation=yes
3832 rm -f conftest.s conftest.o conftest])
3833 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3834 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3835 [Define if your linker can relax absolute .eh_frame personality
3836 pointers into PC-relative form.])
3841 # Mips and HP-UX need the GNU assembler.
3842 # Linux on IA64 might be able to use the Intel assembler.
3845 mips*-*-* | *-*-hpux* )
3846 if test x$gas_flag = xyes \
3847 || test x"$host" != x"$build" \
3848 || test ! -x "$gcc_cv_as" \
3849 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3852 echo "*** This configuration requires the GNU assembler" >&2
3858 # ??? Not all targets support dwarf2 debug_line, even within a version
3859 # of gas. Moreover, we need to emit a valid instruction to trigger any
3860 # info to the output file. So, as supported targets are added to gas 2.11,
3861 # add some instruction here to (also) show we expect this might work.
3862 # ??? Once 2.11 is released, probably need to add first known working
3863 # version to the per-target configury.
3865 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3866 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3876 if test x"$insn" != x; then
3878 .file 1 \"conftest.s\"
3881 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3882 gcc_cv_as_dwarf2_debug_line,
3883 [elf,2,11,0],, [$conftest_s],
3884 [if test x$gcc_cv_objdump != x \
3885 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3886 | grep debug_line > /dev/null 2>&1; then
3887 gcc_cv_as_dwarf2_debug_line=yes
3890 # The .debug_line file table must be in the exact order that
3891 # we specified the files, since these indices are also used
3892 # by DW_AT_decl_file. Approximate this test by testing if
3893 # the assembler bitches if the same index is assigned twice.
3894 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3895 gcc_cv_as_dwarf2_file_buggy,,,
3899 if test $gcc_cv_as_dwarf2_debug_line = yes \
3900 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3901 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3902 [Define if your assembler supports dwarf2 .file/.loc directives,
3903 and preserves file table indices exactly as given.])
3906 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3907 gcc_cv_as_gdwarf2_flag,
3908 [elf,2,11,0], [--gdwarf2], [$insn],,
3909 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3910 [Define if your assembler supports the --gdwarf2 option.])])
3912 gcc_GAS_CHECK_FEATURE([--gstabs option],
3913 gcc_cv_as_gstabs_flag,
3914 [elf,2,11,0], [--gstabs], [$insn],
3915 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3916 # and warns about it, but still exits successfully. So check for
3918 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3920 else gcc_cv_as_gstabs_flag=yes
3922 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3923 [Define if your assembler supports the --gstabs option.])])
3925 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3926 gcc_cv_as_debug_prefix_map_flag,
3927 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3928 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3929 [Define if your assembler supports the --debug-prefix-map option.])])
3932 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3935 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3936 [Define if your assembler supports .lcomm with an alignment field.])])
3938 AC_ARG_ENABLE(gnu-unique-object,
3939 [AS_HELP_STRING([--enable-gnu-unique-object],
3940 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
3941 [case $enable_gnu_unique_object in
3943 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3944 Valid choices are 'yes' and 'no'.]) ;;
3946 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3948 [.type foo, @gnu_unique_object],,
3949 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3950 [[if test x$host = x$build -a x$host = x$target &&
3951 ldd --version 2>/dev/null &&
3952 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3953 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3954 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3955 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3956 if test "$glibcnum" -ge 2011 ; then
3957 enable_gnu_unique_object=yes
3960 if test x$enable_gnu_unique_object = xyes; then
3961 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3962 [Define if your assembler supports @gnu_unique_object.])
3965 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3966 [gcc_cv_as_line_zero],
3967 [gcc_cv_as_line_zero=no
3968 if test $in_tree_gas = yes; then
3969 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3970 elif test "x$gcc_cv_as" != x; then
3971 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3972 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3973 test "x`cat conftest.out`" = x
3975 gcc_cv_as_line_zero=yes
3977 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3978 cat conftest.s >&AS_MESSAGE_LOG_FD
3979 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3980 cat conftest.out >&AS_MESSAGE_LOG_FD
3982 rm -f conftest.o conftest.s conftest.out
3984 if test "x$gcc_cv_as_line_zero" = xyes; then
3985 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3986 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3989 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3990 gcc_cv_ld_eh_frame_hdr=no
3991 if test $in_tree_ld = yes ; then
3992 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3993 && test $in_tree_ld_is_elf = yes; then
3994 gcc_cv_ld_eh_frame_hdr=yes
3996 elif test x$gcc_cv_ld != x; then
3997 if echo "$ld_ver" | grep GNU > /dev/null; then
3998 # Check if linker supports --eh-frame-hdr option
3999 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4000 gcc_cv_ld_eh_frame_hdr=yes
4005 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4006 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4007 gcc_cv_ld_eh_frame_hdr=yes
4013 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4014 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4015 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4016 [Define if your linker supports .eh_frame_hdr.])
4018 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4020 AC_MSG_CHECKING(linker position independent executable support)
4022 if test $in_tree_ld = yes ; then
4023 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4024 && test $in_tree_ld_is_elf = yes; then
4027 elif test x$gcc_cv_ld != x; then
4028 # Check if linker supports -pie option
4029 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4033 if test x"$gcc_cv_ld_pie" = xyes; then
4034 AC_DEFINE(HAVE_LD_PIE, 1,
4035 [Define if your linker supports -pie option.])
4037 AC_MSG_RESULT($gcc_cv_ld_pie)
4039 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4040 gcc_cv_ld_eh_gc_sections=no
4041 if test $in_tree_ld = yes ; then
4042 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4043 && test $in_tree_ld_is_elf = yes; then
4044 gcc_cv_ld_eh_gc_sections=yes
4046 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4047 cat > conftest.s <<EOF
4050 .type _start, @function
4053 .size _start, .-_start
4054 .section .text.foo,"ax",@progbits
4055 .type foo, @function
4059 .section .gcc_except_table.foo,"a",@progbits
4062 .section .eh_frame,"a",@progbits
4065 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4066 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4067 | grep "gc-sections option ignored" > /dev/null; then
4068 gcc_cv_ld_eh_gc_sections=no
4069 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4070 | grep gcc_except_table > /dev/null; then
4071 gcc_cv_ld_eh_gc_sections=yes
4072 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4073 if test x$gcc_cv_as_comdat_group != xyes; then
4074 gcc_cv_ld_eh_gc_sections=no
4075 cat > conftest.s <<EOF
4078 .type _start, @function
4081 .size _start, .-_start
4082 .section .gnu.linkonce.t.foo,"ax",@progbits
4083 .type foo, @function
4087 .section .gcc_except_table.foo,"a",@progbits
4090 .section .eh_frame,"a",@progbits
4093 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4094 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4095 | grep "gc-sections option ignored" > /dev/null; then
4096 gcc_cv_ld_eh_gc_sections=no
4097 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4098 | grep gcc_except_table > /dev/null; then
4099 gcc_cv_ld_eh_gc_sections=yes
4105 rm -f conftest.s conftest.o conftest
4109 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4110 gcc_cv_ld_eh_gc_sections=no
4113 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4114 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4115 [Define if your linker supports garbage collection of
4116 sections in presence of EH frames.])
4118 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4120 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4121 gcc_cv_ld_eh_gc_sections_bug=no
4122 if test $in_tree_ld = yes ; then
4123 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4124 && test $in_tree_ld_is_elf = yes; then
4125 gcc_cv_ld_eh_gc_sections_bug=yes
4127 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
4128 gcc_cv_ld_eh_gc_sections_bug=yes
4129 cat > conftest.s <<EOF
4132 .type _start, @function
4135 .size _start, .-_start
4136 .section .text.startup.foo,"ax",@progbits
4137 .type foo, @function
4141 .section .gcc_except_table.foo,"a",@progbits
4144 .section .eh_frame,"a",@progbits
4147 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4148 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4149 | grep "gc-sections option ignored" > /dev/null; then
4151 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4152 | grep gcc_except_table > /dev/null; then
4153 gcc_cv_ld_eh_gc_sections_bug=no
4156 rm -f conftest.s conftest.o conftest
4158 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4159 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4160 [Define if your linker has buggy garbage collection of
4161 sections support when .text.startup.foo like sections are used.])
4163 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4169 AC_CACHE_CHECK(linker --as-needed support,
4170 gcc_cv_ld_as_needed,
4171 [gcc_cv_ld_as_needed=no
4172 if test $in_tree_ld = yes ; then
4173 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4174 && test $in_tree_ld_is_elf = yes; then
4175 gcc_cv_ld_as_needed=yes
4177 elif test x$gcc_cv_ld != x; then
4178 # Check if linker supports --as-needed and --no-as-needed options
4179 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4180 gcc_cv_ld_as_needed=yes
4184 if test x"$gcc_cv_ld_as_needed" = xyes; then
4185 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4186 [Define if your linker supports --as-needed and --no-as-needed options.])
4189 case "$target:$tm_file" in
4190 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4191 AC_CACHE_CHECK(linker support for omitting dot symbols,
4192 gcc_cv_ld_no_dot_syms,
4193 [gcc_cv_ld_no_dot_syms=no
4194 if test x"$ld_is_gold" = xyes; then
4195 gcc_cv_ld_no_dot_syms=yes
4196 elif test $in_tree_ld = yes ; then
4197 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4198 gcc_cv_ld_no_dot_syms=yes
4200 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4201 cat > conftest1.s <<EOF
4205 cat > conftest2.s <<EOF
4206 .section ".opd","aw"
4211 .quad .LEfoo,.TOC.@tocbase,0
4217 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4218 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4219 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4220 gcc_cv_ld_no_dot_syms=yes
4222 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4225 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4226 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4227 [Define if your PowerPC64 linker only needs function descriptor syms.])
4230 AC_CACHE_CHECK(linker large toc support,
4231 gcc_cv_ld_large_toc,
4232 [gcc_cv_ld_large_toc=no
4233 if test x"$ld_is_gold" = xyes; then
4234 gcc_cv_ld_large_toc=yes
4235 elif test $in_tree_ld = yes ; then
4236 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4237 gcc_cv_ld_large_toc=yes
4239 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4240 cat > conftest.s <<EOF
4241 .section ".tbss","awT",@nobits
4247 addis 9,13,ie0@got@tprel@ha
4248 ld 9,ie0@got@tprel@l(9)
4250 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4251 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4252 gcc_cv_ld_large_toc=yes
4254 rm -f conftest conftest.o conftest.s
4257 if test x"$gcc_cv_ld_large_toc" = xyes; then
4258 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4259 [Define if your PowerPC64 linker supports a large TOC.])
4264 AC_CACHE_CHECK(linker --build-id support,
4266 [gcc_cv_ld_buildid=no
4267 if test $in_tree_ld = yes ; then
4268 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4269 "$gcc_cv_gld_minor_version" -ge 18 -o \
4270 "$gcc_cv_gld_major_version" -gt 2 \
4271 && test $in_tree_ld_is_elf = yes; then
4272 gcc_cv_ld_buildid=yes
4274 elif test x$gcc_cv_ld != x; then
4275 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4276 gcc_cv_ld_buildid=yes
4279 if test x"$gcc_cv_ld_buildid" = xyes; then
4280 AC_DEFINE(HAVE_LD_BUILDID, 1,
4281 [Define if your linker supports --build-id.])
4284 AC_ARG_ENABLE(linker-build-id,
4285 [ --enable-linker-build-id
4286 compiler will always pass --build-id to linker],
4288 enable_linker_build_id=no)
4290 if test x"$enable_linker_build_id" = xyes; then
4291 if test x"$gcc_cv_ld_buildid" = xyes; then
4292 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4293 [Define if gcc should always pass --build-id to linker.])
4295 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4299 # In binutils 2.21, GNU ld gained support for new emulations fully
4300 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4301 AC_CACHE_CHECK(linker *_sol2 emulation support,
4302 gcc_cv_ld_sol2_emulation,
4303 [gcc_cv_ld_sol2_emulation=no
4304 if test $in_tree_ld = yes ; then
4305 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4306 "$gcc_cv_gld_minor_version" -ge 21 -o \
4307 "$gcc_cv_gld_major_version" -gt 2 \
4308 && test $in_tree_ld_is_elf = yes; then
4309 gcc_cv_ld_sol2_emulation=yes
4311 elif test x$gcc_cv_ld != x; then
4312 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4313 grep _sol2 > /dev/null; then
4314 gcc_cv_ld_sol2_emulation=yes
4317 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4318 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4319 [Define if your linker supports the *_sol2 emulations.])
4322 AC_CACHE_CHECK(linker --sysroot support,
4324 [gcc_cv_ld_sysroot=no
4325 if test $in_tree_ld = yes ; then
4326 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4327 gcc_cv_ld_sysroot=yes
4329 elif test x$gcc_cv_ld != x; then
4330 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4331 gcc_cv_ld_sysroot=yes
4334 if test x"$gcc_cv_ld_sysroot" = xyes; then
4335 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4336 [Define if your linker supports --sysroot.])
4339 if test x$with_sysroot = x && test x$host = x$target \
4340 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4341 && test "$prefix" != "NONE"; then
4342 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4343 [Define to PREFIX/include if cpp should also search that directory.])
4346 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4347 if test "x$with_headers" != x; then
4348 target_header_dir=$with_headers
4349 elif test "x$with_sysroot" = x; then
4350 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4351 elif test "x$with_build_sysroot" != "x"; then
4352 target_header_dir="${with_build_sysroot}/usr/include"
4353 elif test "x$with_sysroot" = xyes; then
4354 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4356 target_header_dir="${with_sysroot}/usr/include"
4359 target_header_dir=/usr/include
4362 # Test for stack protector support in target C library.
4363 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4364 gcc_cv_libc_provides_ssp,
4365 [gcc_cv_libc_provides_ssp=no
4367 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4368 [# glibc 2.4 and later provides __stack_chk_fail and
4369 # either __stack_chk_guard, or TLS access to stack guard canary.
4370 if test -f $target_header_dir/features.h \
4371 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4372 $target_header_dir/features.h > /dev/null; then
4373 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4374 $target_header_dir/features.h > /dev/null; then
4375 gcc_cv_libc_provides_ssp=yes
4376 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4377 $target_header_dir/features.h > /dev/null \
4378 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4379 $target_header_dir/features.h > /dev/null; then
4380 gcc_cv_libc_provides_ssp=yes
4381 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4382 $target_header_dir/features.h > /dev/null && \
4383 test -f $target_header_dir/bits/uClibc_config.h && \
4384 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4385 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4386 gcc_cv_libc_provides_ssp=yes
4391 # Avoid complicated tests (see
4392 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4393 # simply assert that glibc does provide this, which is true for all
4394 # realistically usable GNU/Hurd configurations.
4395 gcc_cv_libc_provides_ssp=yes;;
4396 *-*-darwin* | *-*-freebsd*)
4397 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4398 [echo "no __stack_chk_fail on this target"])
4400 *) gcc_cv_libc_provides_ssp=no ;;
4403 if test x$gcc_cv_libc_provides_ssp = xyes; then
4404 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4405 [Define if your target C library provides stack protector support])
4408 # Check if TFmode long double should be used by default or not.
4409 # Some glibc targets used DFmode long double, but with glibc 2.4
4410 # and later they can use TFmode.
4412 powerpc*-*-linux* | \
4417 AC_ARG_WITH(long-double-128,
4418 [ --with-long-double-128 Use 128-bit long double by default.],
4419 gcc_cv_target_ldbl128="$with_long_double_128",
4420 [[gcc_cv_target_ldbl128=no
4421 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4422 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4423 && gcc_cv_target_ldbl128=yes
4427 if test x$gcc_cv_target_ldbl128 = xyes; then
4428 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4429 [Define if TFmode long double should be the default])
4432 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4433 gcc_cv_target_dl_iterate_phdr=unknown
4436 # <link.h> needs both a dl_iterate_phdr declaration and support for
4437 # compilation with largefile support.
4438 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4439 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4440 gcc_cv_target_dl_iterate_phdr=yes
4442 gcc_cv_target_dl_iterate_phdr=no
4446 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4447 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4448 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4449 [Define if your target C library provides the `dl_iterate_phdr' function.])
4451 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4453 # Find out what GC implementation we want, or may, use.
4455 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4463 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4466 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4471 echo "Using $GGC for garbage collection."
4473 # Libraries to use on the host. This will normally be set by the top
4474 # level Makefile. Here we simply capture the value for our Makefile.
4475 if test -z "${HOST_LIBS+set}"; then
4480 # Use the system's zlib library.
4482 zlibinc="-I\$(srcdir)/../zlib"
4483 AC_ARG_WITH(system-zlib,
4484 [ --with-system-zlib use installed libz],
4491 dnl Very limited version of automake's enable-maintainer-mode
4493 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4494 dnl maintainer-mode is disabled by default
4495 AC_ARG_ENABLE(maintainer-mode,
4496 [ --enable-maintainer-mode
4497 enable make rules and dependencies not useful
4498 (and sometimes confusing) to the casual installer],
4499 maintainer_mode=$enableval,
4502 AC_MSG_RESULT($maintainer_mode)
4504 if test "$maintainer_mode" = "yes"; then
4515 # Make empty files to contain the specs and options for each language.
4516 # Then add #include lines to for a compiler that has specs and/or options.
4522 # These (without "all_") are set in each config-lang.in.
4523 # `language' must be a single word so is spelled singularly.
4526 all_outputs='Makefile'
4527 # List of language makefile fragments.
4529 # Additional files for gengtype
4530 all_gtfiles="$target_gtfiles"
4532 # These are the languages that are set in --enable-languages,
4533 # and are available in the GCC tree.
4534 all_selected_languages=
4536 # Add the language fragments.
4537 # Languages are added via two mechanisms. Some information must be
4538 # recorded in makefile variables, these are defined in config-lang.in.
4539 # We accumulate them and plug them into the main Makefile.
4540 # The other mechanism is a set of hooks for each of the main targets
4541 # like `clean', `install', etc.
4543 language_hooks="Make-hooks"
4545 for lang in ${srcdir}/*/config-lang.in
4548 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4550 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4551 if test "x$lang_alias" = x
4553 echo "$lang doesn't set \$language." 1>&2
4556 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4557 subdirs="$subdirs $subdir"
4559 # $gcc_subdir is where the gcc integration files are to be found
4560 # for a language, both for internal compiler purposes (compiler
4561 # sources implementing front-end to GCC tree converters), and for
4562 # build infrastructure purposes (Make-lang.in, etc.)
4564 # This will be <subdir> (relative to $srcdir) if a line like
4565 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4566 # is found in <langdir>/config-lang.in, and will remain <langdir>
4569 # Except for the language alias (fetched above), the regular
4570 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4571 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4572 # only this and the language alias.
4574 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4575 if [ "$gcc_subdir" = "" ]; then
4576 gcc_subdir="$subdir"
4579 case ",$enable_languages," in
4581 all_selected_languages="$all_selected_languages $lang_alias"
4582 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4583 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4595 . ${srcdir}/$gcc_subdir/config-lang.in
4596 if test "x$language" = x
4598 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4603 case ",$enable_languages," in
4606 for i in $subdir_requires; do
4607 test -f "${srcdir}/$i/config-lang.in" && continue
4615 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4616 if test -f $srcdir/$gcc_subdir/lang.opt; then
4617 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4618 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4620 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4621 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4623 all_languages="$all_languages $language"
4624 all_compilers="$all_compilers $compilers"
4625 all_outputs="$all_outputs $outputs"
4626 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4627 case ",$enable_languages," in
4629 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4631 AC_SUBST(enable_lto)
4637 # Pick up gtfiles for c
4639 . ${srcdir}/c-config-lang.in
4640 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4643 for language in $all_selected_languages
4645 check_languages="$check_languages check-$language"
4648 # We link each language in with a set of hooks, reached indirectly via
4649 # lang.${target}. Only do so for selected languages.
4653 target_list="all.cross start.encap rest.encap tags \
4654 install-common install-man install-info install-pdf install-html dvi \
4655 pdf html uninstall info man srcextra srcman srcinfo \
4656 mostlyclean clean distclean maintainer-clean install-plugin"
4658 for t in $target_list
4661 for lang in $all_selected_languages
4665 echo "lang.$t: $x" >> Make-hooks
4669 # Option include files
4672 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4673 option_includes="option-includes.mk"
4674 AC_SUBST_FILE(option_includes)
4682 echo "dir ." > .gdbinit
4683 echo "dir ${srcdir}" >> .gdbinit
4684 if test x$gdb_needs_out_file_path = xyes
4686 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4688 if test "x$subdirs" != x; then
4691 echo "dir ${srcdir}/$s" >> .gdbinit
4694 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4696 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4697 AC_SUBST(gcc_tooldir)
4700 # Find a directory in which to install a shared libgcc.
4702 AC_ARG_ENABLE(version-specific-runtime-libs,
4703 [ --enable-version-specific-runtime-libs
4704 specify that runtime libraries should be
4705 installed in a compiler-specific directory])
4707 AC_ARG_WITH(slibdir,
4708 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4709 slibdir="$with_slibdir",
4710 if test "${enable_version_specific_runtime_libs+set}" = set; then
4711 slibdir='$(libsubdir)'
4712 elif test "$host" != "$target"; then
4713 slibdir='$(build_tooldir)/lib'
4719 # Substitute configuration variables
4722 AC_SUBST(all_compilers)
4723 AC_SUBST(all_gtfiles)
4724 AC_SUBST(all_lang_makefrags)
4725 AC_SUBST(all_languages)
4726 AC_SUBST(all_selected_languages)
4727 AC_SUBST(build_exeext)
4728 AC_SUBST(build_install_headers_dir)
4729 AC_SUBST(build_xm_file_list)
4730 AC_SUBST(build_xm_include_list)
4731 AC_SUBST(build_xm_defines)
4732 AC_SUBST(build_file_translate)
4733 AC_SUBST(check_languages)
4734 AC_SUBST(cpp_install_dir)
4735 AC_SUBST(xmake_file)
4736 AC_SUBST(tmake_file)
4737 AC_SUBST(TM_ENDIAN_CONFIG)
4738 AC_SUBST(TM_MULTILIB_CONFIG)
4739 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4740 AC_SUBST(extra_gcc_objs)
4741 AC_SUBST(user_headers_inc_next_pre)
4742 AC_SUBST(user_headers_inc_next_post)
4743 AC_SUBST(extra_headers_list)
4744 AC_SUBST(extra_objs)
4745 AC_SUBST(extra_parts)
4746 AC_SUBST(extra_passes)
4747 AC_SUBST(extra_programs)
4748 AC_SUBST(float_h_file)
4749 AC_SUBST(gcc_config_arguments)
4750 AC_SUBST(gcc_gxx_include_dir)
4751 AC_SUBST(host_exeext)
4752 AC_SUBST(host_xm_file_list)
4753 AC_SUBST(host_xm_include_list)
4754 AC_SUBST(host_xm_defines)
4755 AC_SUBST(out_host_hook_obj)
4757 AC_SUBST(lang_opt_files)
4758 AC_SUBST(lang_specs_files)
4759 AC_SUBST(lang_tree_files)
4760 AC_SUBST(local_prefix)
4762 AC_SUBST(objc_boehm_gc)
4764 AC_SUBST(out_object_file)
4765 AC_SUBST(thread_file)
4766 AC_SUBST(tm_file_list)
4767 AC_SUBST(tm_include_list)
4768 AC_SUBST(tm_defines)
4769 AC_SUBST(tm_p_file_list)
4770 AC_SUBST(tm_p_include_list)
4771 AC_SUBST(xm_file_list)
4772 AC_SUBST(xm_include_list)
4773 AC_SUBST(xm_defines)
4774 AC_SUBST(use_gcc_stdint)
4775 AC_SUBST(c_target_objs)
4776 AC_SUBST(cxx_target_objs)
4777 AC_SUBST(fortran_target_objs)
4778 AC_SUBST(target_cpu_default)
4780 AC_SUBST_FILE(language_hooks)
4783 if test x${build} = x${host} ; then
4784 if test x${host} = x${target} ; then
4785 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4787 echo "Links are now set up to build a cross-compiler" 1>&2
4788 echo " from ${host} to ${target}." 1>&2
4791 if test x${host} = x${target} ; then
4792 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4793 echo " for ${target}." 1>&2
4795 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4796 echo " from ${host} to ${target}." 1>&2
4800 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4801 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4803 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4804 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4806 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4807 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4808 if test "x${CLOOGLIBS}" != "x" ; then
4809 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4812 # Check for plugin support
4813 AC_ARG_ENABLE(plugin,
4814 [ --enable-plugin enable plugin support],
4815 enable_plugin=$enableval,
4816 enable_plugin=yes; default_plugin=yes)
4822 if test x$build = x$host; then
4823 export_sym_check="nm${exeext} -g"
4824 elif test x$host = x$target; then
4825 export_sym_check="$gcc_cv_nm -g"
4831 if test x$build = x$host; then
4832 export_sym_check="objdump${exeext} -T"
4833 elif test x$host = x$target; then
4834 export_sym_check="$gcc_cv_objdump -T"
4841 if test x"$enable_plugin" = x"yes"; then
4843 AC_MSG_CHECKING([for exported symbols])
4844 if test "x$export_sym_check" != x; then
4845 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4846 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4847 if $export_sym_check conftest | grep foobar > /dev/null; then
4848 : # No need to use a flag
4849 AC_MSG_RESULT([yes])
4851 AC_MSG_RESULT([yes])
4852 AC_MSG_CHECKING([for -rdynamic])
4853 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4854 if $export_sym_check conftest | grep foobar > /dev/null; then
4856 pluginlibs="-rdynamic"
4861 AC_MSG_RESULT([$plugin_rdynamic])
4864 AC_MSG_RESULT([unable to check])
4869 AC_SEARCH_LIBS([dlopen], [dl])
4870 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4871 pluginlibs="$pluginlibs -ldl"
4875 # Check that we can build shared objects with -fPIC -shared
4876 saved_LDFLAGS="$LDFLAGS"
4877 saved_CFLAGS="$CFLAGS"
4880 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4881 CFLAGS="$CFLAGS -fPIC"
4882 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4885 CFLAGS="$CFLAGS -fPIC"
4886 LDFLAGS="$LDFLAGS -fPIC -shared"
4889 AC_MSG_CHECKING([for -fPIC -shared])
4891 [extern int X;],[return X == 0;],
4892 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4893 [AC_MSG_RESULT([no]); have_pic_shared=no])
4894 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4898 LDFLAGS="$saved_LDFLAGS"
4899 CFLAGS="$saved_CFLAGS"
4901 # If plugin support had been requested but not available, fail.
4902 if test x"$enable_plugin" = x"no" ; then
4903 if test x"$default_plugin" != x"yes"; then
4905 Building GCC with plugin support requires a host that supports
4906 -fPIC, -shared, -ldl and -rdynamic.])
4911 AC_SUBST(pluginlibs)
4912 AC_SUBST(enable_plugin)
4913 if test x"$enable_plugin" = x"yes"; then
4914 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4918 AC_ARG_ENABLE(libquadmath-support,
4919 [AS_HELP_STRING([--disable-libquadmath-support],
4920 [disable libquadmath support for Fortran])],
4921 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
4922 ENABLE_LIBQUADMATH_SUPPORT=yes)
4923 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
4924 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
4925 [Define to 1 to enable libquadmath support])
4929 # Configure the subdirectories
4930 # AC_CONFIG_SUBDIRS($subdirs)
4932 # Create the Makefile
4933 # and configure language subdirectories
4934 AC_CONFIG_FILES($all_outputs)
4936 AC_CONFIG_COMMANDS([default],
4938 case ${CONFIG_HEADERS} in
4939 *auto-host.h:config.in*)
4942 # Make sure all the subdirs exist.
4943 for d in $subdirs doc build c-family
4945 test -d $d || mkdir $d
4948 [subdirs='$subdirs'])