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 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
307 # sizeof(char) is 1 by definition.
308 AC_CHECK_SIZEOF(void *)
309 AC_CHECK_SIZEOF(short)
311 AC_CHECK_SIZEOF(long)
312 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
313 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
316 # ---------------------
317 # Warnings and checking
318 # ---------------------
320 # Check $CC warning features (if it's GCC).
321 # We want to use -pedantic, but we don't want warnings about
325 # So, we only use -pedantic if we can disable those warnings.
327 ACX_PROG_CC_WARNING_OPTS(
328 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
332 ACX_PROG_CC_WARNING_OPTS(
333 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
336 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
337 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
338 [-Wno-overlength-strings])), [strict_warn])
339 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
341 # The above macros do nothing if the compiler is not GCC. However, the
342 # Makefile has more goo to add other flags, so these variables are used
343 # to enable warnings only for GCC.
346 if test "x$GCC" = "xyes"; then
347 warn_cflags='$(GCC_WARN_CFLAGS)'
348 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
350 AC_SUBST(warn_cflags)
351 AC_SUBST(warn_cxxflags)
353 # Enable expensive internal checks
355 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
359 AC_ARG_ENABLE(checking,
360 [ --enable-checking[=LIST]
361 enable expensive run-time checks. With LIST,
362 enable only specific categories of checks.
363 Categories are: yes,no,all,none,release.
364 Flags are: assert,df,fold,gc,gcac,gimple,misc,
365 rtlflag,rtl,runtime,tree,valgrind,types.],
366 [ac_checking_flags="${enableval}"],[
367 # Determine the default checks.
368 if test x$is_release = x ; then
369 ac_checking_flags=yes
371 ac_checking_flags=release
373 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
374 for check in release $ac_checking_flags
377 # these set all the flags to specific states
378 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
379 ac_fold_checking= ; ac_gc_checking=1 ;
380 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
381 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
382 ac_tree_checking=1 ; ac_valgrind_checking= ;
383 ac_types_checking=1 ;;
384 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
385 ac_fold_checking= ; ac_gc_checking= ;
386 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
387 ac_rtlflag_checking= ; ac_runtime_checking= ;
388 ac_tree_checking= ; ac_valgrind_checking= ;
389 ac_types_checking= ;;
390 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
391 ac_fold_checking=1 ; ac_gc_checking=1 ;
392 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
393 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
394 ac_tree_checking=1 ; ac_valgrind_checking= ;
395 ac_types_checking=1 ;;
396 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
397 ac_fold_checking= ; ac_gc_checking= ;
398 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
399 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
400 ac_tree_checking= ; ac_valgrind_checking= ;
401 ac_types_checking= ;;
402 # these enable particular checks
403 assert) ac_assert_checking=1 ;;
404 df) ac_df_checking=1 ;;
405 fold) ac_fold_checking=1 ;;
406 gc) ac_gc_checking=1 ;;
407 gcac) ac_gc_always_collect=1 ;;
408 gimple) ac_gimple_checking=1 ;;
409 misc) ac_checking=1 ;;
410 rtl) ac_rtl_checking=1 ;;
411 rtlflag) ac_rtlflag_checking=1 ;;
412 runtime) ac_runtime_checking=1 ;;
413 tree) ac_tree_checking=1 ;;
414 types) ac_types_checking=1 ;;
415 valgrind) ac_valgrind_checking=1 ;;
416 *) AC_MSG_ERROR(unknown check category $check) ;;
422 if test x$ac_checking != x ; then
423 AC_DEFINE(ENABLE_CHECKING, 1,
424 [Define if you want more run-time sanity checks. This one gets a grab
425 bag of miscellaneous but relatively cheap checks.])
426 nocommon_flag=-fno-common
428 AC_SUBST(nocommon_flag)
429 if test x$ac_df_checking != x ; then
430 AC_DEFINE(ENABLE_DF_CHECKING, 1,
431 [Define if you want more run-time sanity checks for dataflow.])
433 if test x$ac_assert_checking != x ; then
434 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
435 [Define if you want assertions enabled. This is a cheap check.])
437 if test x$ac_gimple_checking != x ; then
438 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
439 [Define if you want operations on GIMPLE (the basic data structure of
440 the high-level optimizers) to be checked for dynamic type safety at
441 runtime. This is moderately expensive.])
443 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
444 if test x$ac_runtime_checking != x ; then
445 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
446 [Define if you want runtime assertions enabled. This is a cheap check.])
448 if test x$ac_tree_checking != x ; then
449 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
450 [Define if you want all operations on trees (the basic data
451 structure of the front ends) to be checked for dynamic type safety
452 at runtime. This is moderately expensive. The tree browser debugging
453 routines will also be enabled by this option.
455 TREEBROWSER=tree-browser.o
457 if test x$ac_types_checking != x ; then
458 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
459 [Define if you want all gimple types to be verified after gimplifiation.
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_valgrind_checking != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
505 [[#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
514 [[#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 [gcc_cv_header_memcheck_h=no])
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 # Enable code coverage collection
547 AC_ARG_ENABLE(coverage,
548 [ --enable-coverage[=LEVEL]
549 enable compiler's code coverage collection.
550 Use to measure compiler performance and locate
551 unused parts of the compiler. With LEVEL, specify
552 optimization. Values are opt, noopt,
554 [case "${enableval}" in
556 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
559 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
562 # a.k.a. --disable-coverage
566 AC_MSG_ERROR(unknown coverage setting $enableval)
570 AC_SUBST(coverage_flags)
572 AC_ARG_ENABLE(gather-detailed-mem-stats,
573 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
574 [enable_gather_detailed_mem_stats=no])
575 if test x$enable_gather_detailed_mem_stats = xyes ; then
576 AC_DEFINE(GATHER_STATISTICS, 1,
577 [Define to enable detailed memory allocation stats gathering.])
580 # -------------------------------
581 # Miscenalleous configure options
582 # -------------------------------
584 # See if we are building gcc with C++.
585 AC_ARG_ENABLE(build-with-cxx,
586 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
587 ENABLE_BUILD_WITH_CXX=$enableval,
588 ENABLE_BUILD_WITH_CXX=no)
589 AC_SUBST(ENABLE_BUILD_WITH_CXX)
593 [ --with-stabs arrange to use stabs instead of host debug format],
597 # Determine whether or not multilibs are enabled.
598 AC_ARG_ENABLE(multilib,
599 [ --enable-multilib enable library support for multiple ABIs],
600 [], [enable_multilib=yes])
601 AC_SUBST(enable_multilib)
603 # Enable __cxa_atexit for C++.
604 AC_ARG_ENABLE(__cxa_atexit,
605 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
608 # Enable C extension for decimal float if target supports it.
609 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
611 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
612 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
613 [Define to 1 to enable decimal float extension to C.])
615 # Use default_decimal_float for dependency.
616 enable_decimal_float=$default_decimal_float
618 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
620 [Define to 1 to specify that we are using the BID decimal floating
621 point format instead of DPD])
623 # Enable C extension for fixed-point arithmetic.
624 AC_ARG_ENABLE(fixed-point,
625 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
633 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
634 enable_fixed_point=no
637 enable_fixed_point=yes
642 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
643 enable_fixed_point=no
647 AC_SUBST(enable_fixed_point)
649 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
650 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
651 [Define to 1 to enable fixed-point arithmetic extension to C.])
654 # Pass with no value to take the default
655 # Pass with a value to specify a thread package
656 AC_ARG_ENABLE(threads,
657 [ --enable-threads enable thread usage for target GCC
658 --enable-threads=LIB use LIB thread package for target GCC],,
662 [ --enable-tls enable or disable generation of tls code
663 overriding the assembler check for tls support],
667 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
668 Valid choices are 'yes' and 'no'.]) ;;
672 AC_ARG_ENABLE(objc-gc,
673 [ --enable-objc-gc enable the use of Boehm's garbage collector with
674 the GNU Objective-C runtime],
675 if test x$enable_objc_gc = xno; then
683 [ --with-dwarf2 force the default debug format to be DWARF 2],
684 dwarf2="$with_dwarf2",
687 AC_ARG_ENABLE(shared,
688 [ --disable-shared don't provide a shared libgcc],
690 case $enable_shared in
694 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
695 for pkg in $enableval; do
696 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
703 ], [enable_shared=yes])
704 AC_SUBST(enable_shared)
706 AC_ARG_WITH(build-sysroot,
707 [ --with-build-sysroot=sysroot
708 use sysroot as the system root during the build])
711 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
713 case ${with_sysroot} in
714 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
715 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
718 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
719 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
721 if test "x$prefix" = xNONE; then
722 test_prefix=/usr/local
726 if test "x$exec_prefix" = xNONE; then
727 test_exec_prefix=$test_prefix
729 test_exec_prefix=$exec_prefix
731 case ${TARGET_SYSTEM_ROOT} in
732 "${test_prefix}"|"${test_prefix}/"*|\
733 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
734 '${prefix}'|'${prefix}/'*|\
735 '${exec_prefix}'|'${exec_prefix}/'*)
736 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
737 TARGET_SYSTEM_ROOT_DEFINE="$t"
742 TARGET_SYSTEM_ROOT_DEFINE=
743 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
745 AC_SUBST(TARGET_SYSTEM_ROOT)
746 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
747 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
750 [AS_HELP_STRING([--with-specs=SPECS],
751 [add SPECS to driver command-line processing])],
752 [CONFIGURE_SPECS=$withval],
755 AC_SUBST(CONFIGURE_SPECS)
757 ACX_PKGVERSION([GCC])
758 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
760 # Sanity check enable_languages in case someone does not run the toplevel
761 # configure # script.
762 AC_ARG_ENABLE(languages,
763 [ --enable-languages=LIST specify which front-ends to build],
764 [case ,${enable_languages}, in
766 # go safe -- we cannot be much sure without the toplevel
768 # analysis of which target libs are present and usable
772 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
777 enable_languages=c,${enable_languages}
780 [enable_languages=c])
782 AC_ARG_WITH(multilib-list,
783 [ --with-multilib-list Select multilibs (SH only)],
785 with_multilib_list=default)
787 # -------------------------
788 # Checks for other programs
789 # -------------------------
793 # Find some useful tools
795 # We need awk to create options.c and options.h.
796 # Bail out if it's missing.
798 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
806 # By default, the Darwin ranlib will not treat common symbols as
807 # definitions when building the archive table of contents. Other
808 # ranlibs do that; pass an option to the Darwin ranlib that makes
809 # it behave similarly.
815 AC_SUBST(ranlib_flags)
819 # See if cmp has --ignore-initial.
820 gcc_AC_PROG_CMP_IGNORE_INITIAL
822 # See if we have the mktemp command.
823 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
825 # See if makeinfo has been installed and is modern enough
826 # that we can use it.
827 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
828 [GNU texinfo.* \([0-9][0-9.]*\)],
829 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
830 if test $gcc_cv_prog_makeinfo_modern = no; then
832 *** Makeinfo is missing or too old.
833 *** Info documentation will not be built.])
840 # Is pod2man recent enough to regenerate manpages?
841 AC_MSG_CHECKING([for recent Pod::Man])
842 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
844 GENERATED_MANPAGES=generated-manpages
849 AC_SUBST(GENERATED_MANPAGES)
851 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
854 dnl Don't use AC_PROG_LEX; we insist on flex.
855 dnl LEXLIB is not useful in gcc.
856 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
859 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
861 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
862 # check for build == host before using them.
865 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
866 && test -d ../binutils ; then
867 NM='${objdir}/../binutils/nm-new'
869 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
873 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
874 && test -d ../binutils ; then
875 AR='${objdir}/../binutils/ar'
877 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
881 # --------------------
882 # Checks for C headers
883 # --------------------
885 # Need to reject headers which give warnings, so that the -Werror bootstrap
886 # works later. *sigh* This needs to come before all header checks.
893 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
894 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
895 sys/resource.h sys/param.h sys/times.h sys/stat.h \
896 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
898 # Check for thread headers.
899 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
900 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
902 # These tests can't be done till we know if we have limits.h.
911 # These libraries may be used by collect2.
912 # We may need a special search path to get them linked.
913 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
915 for libs in '' -lld -lmld \
916 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
917 '-L/usr/lib/cmplrs/cc3.11 -lmld'
920 AC_TRY_LINK_FUNC(ldopen,
921 [gcc_cv_collect2_libs="$libs"; break])
924 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
925 case $gcc_cv_collect2_libs in
927 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
929 AC_SUBST(COLLECT2_LIBS)
931 # When building Ada code on Alpha, we need exc_resume which is usually in
932 # -lexc. So test for it.
935 AC_SEARCH_LIBS(exc_resume, exc)
938 AC_SUBST(GNAT_LIBEXC)
940 # Some systems put ldexp and frexp in libm instead of libc; assume
941 # they're both in the same place. jcf-dump needs them.
944 AC_SEARCH_LIBS(ldexp, m)
949 # Use <inttypes.h> only if it exists,
950 # doesn't clash with <sys/types.h>, and declares intmax_t.
951 AC_MSG_CHECKING(for inttypes.h)
952 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
953 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
954 [[#include <sys/types.h>
955 #include <inttypes.h>]],
956 [[intmax_t i = -1;]])],
957 [gcc_cv_header_inttypes_h=yes],
958 [gcc_cv_header_inttypes_h=no])])
959 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
960 if test $gcc_cv_header_inttypes_h = yes; then
961 AC_DEFINE(HAVE_INTTYPES_H, 1,
962 [Define if you have a working <inttypes.h> header file.])
965 dnl Disabled until we have a complete test for buggy enum bitfields.
966 dnl gcc_AC_C_ENUM_BF_UNSIGNED
968 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
969 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
970 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
971 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
972 putchar_unlocked putc_unlocked)
973 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
974 sysconf strsignal getrusage nl_langinfo \
975 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
978 save_CPPFLAGS="$CPPFLAGS"
980 LIBS="$LIBS $LIBELFLIBS"
981 AC_CHECK_FUNCS(elf_getshdrstrndx,,
982 [AC_CHECK_FUNCS(elf_getshstrndx,
983 [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
987 return elf_getshstrndx (NULL, 0) == 0;
988 }]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1,
989 [Define if elf_getshstrndx has gABI conformant return values.]))])]
992 CPPFLAGS="$save_CPPFLAGS"
994 if test x$ac_cv_func_mbstowcs = xyes; then
995 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
996 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1002 [gcc_cv_func_mbstowcs_works=yes],
1003 [gcc_cv_func_mbstowcs_works=no],
1004 [gcc_cv_func_mbstowcs_works=yes])])
1005 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1006 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1007 [Define this macro if mbstowcs does not crash when its
1008 first argument is NULL.])
1012 AC_CHECK_TYPE(ssize_t, int)
1013 AC_CHECK_TYPE(caddr_t, char *)
1015 gcc_AC_FUNC_MMAP_BLACKLIST
1019 # Under VMS, vfork works very differently than on Unix. The standard test
1020 # won't work, and it isn't easily adaptable. It makes more sense to
1022 ac_cv_func_vfork_works=yes
1028 # Until we have in-tree GNU iconv:
1030 AC_SUBST(LIBICONV_DEP)
1036 # We will need to find libiberty.h and ansidecl.h
1037 saved_CFLAGS="$CFLAGS"
1038 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1039 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1040 strsignal strstr strverscmp \
1041 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1042 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1043 #include "ansidecl.h"
1044 #include "system.h"])
1046 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1047 #include "ansidecl.h"
1049 #ifdef HAVE_SYS_RESOURCE_H
1050 #include <sys/resource.h>
1054 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1055 #include "ansidecl.h"
1057 #ifdef HAVE_SYS_RESOURCE_H
1058 #include <sys/resource.h>
1060 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1061 [Define to `long' if <sys/resource.h> doesn't define.])])
1063 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1064 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1065 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1066 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1067 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1068 #include "ansidecl.h"
1077 gcc_AC_CHECK_DECLS(times, , ,[
1078 #include "ansidecl.h"
1080 #ifdef HAVE_SYS_TIMES_H
1081 #include <sys/times.h>
1085 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1086 #include "ansidecl.h"
1091 # More time-related stuff.
1092 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1093 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1094 #include "ansidecl.h"
1096 #ifdef HAVE_SYS_TIMES_H
1097 #include <sys/times.h>
1099 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1100 if test $ac_cv_struct_tms = yes; then
1101 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1102 [Define if <sys/times.h> defines struct tms.])
1105 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1106 # revisit after autoconf 2.50.
1107 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1108 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1109 #include "ansidecl.h"
1111 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1112 if test $gcc_cv_type_clock_t = yes; then
1113 AC_DEFINE(HAVE_CLOCK_T, 1,
1114 [Define if <time.h> defines clock_t.])
1117 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1118 CFLAGS="$saved_CFLAGS"
1120 gcc_AC_INITFINI_ARRAY
1122 # mkdir takes a single argument on some systems.
1123 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1131 # With Setjmp/Longjmp based exception handling.
1132 AC_ARG_ENABLE(sjlj-exceptions,
1133 [ --enable-sjlj-exceptions
1134 arrange to use setjmp/longjmp exception handling],
1137 if test $enableval != yes; then
1138 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1143 force_sjlj_exceptions=yes],
1146 force_sjlj_exceptions=yes
1150 force_sjlj_exceptions=no
1153 if test $force_sjlj_exceptions = yes; then
1154 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1155 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1156 [Define 0/1 to force the choice for exception handling model.])
1159 # For platforms with the unwind ABI which includes an unwind library,
1160 # libunwind, we can choose to use the system libunwind.
1161 # config.gcc also contains tests of with_system_libunwind.
1162 GCC_CHECK_UNWIND_GETIPINFO
1164 # --------------------------------------------------------
1165 # Build, host, and target specific configuration fragments
1166 # --------------------------------------------------------
1168 # Collect build-machine-specific information.
1169 . ${srcdir}/config.build
1171 # Collect host-machine-specific information.
1172 . ${srcdir}/config.host
1176 # Collect target-machine-specific information.
1177 . ${srcdir}/config.gcc
1179 extra_objs="${host_extra_objs} ${extra_objs}"
1180 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1182 # Default the target-machine variables that were not explicitly set.
1183 if test x"$tm_file" = x
1184 then tm_file=$cpu_type/$cpu_type.h; fi
1186 if test x"$extra_headers" = x
1187 then extra_headers=; fi
1189 if test x$md_file = x
1190 then md_file=$cpu_type/$cpu_type.md; fi
1192 if test x$out_file = x
1193 then out_file=$cpu_type/$cpu_type.c; fi
1195 if test x"$tmake_file" = x
1196 then tmake_file=$cpu_type/t-$cpu_type
1199 if test x"$dwarf2" = xyes
1200 then tm_file="$tm_file tm-dwarf2.h"
1203 # Say what files are being used for the output code and MD file.
1204 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1205 echo "Using \`$srcdir/config/$md_file' as machine description file."
1207 # If any of the xm_file variables contain nonexistent files, warn
1208 # about them and drop them.
1211 for x in $build_xm_file; do
1212 if test -f $srcdir/config/$x
1214 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1220 for x in $host_xm_file; do
1221 if test -f $srcdir/config/$x
1223 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1229 for x in $xm_file; do
1230 if test -f $srcdir/config/$x
1232 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1238 for f in $tm_file; do
1241 if test $count = ax; then
1242 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1244 echo "Using the following target machine macro files:"
1245 for f in $tm_file; do
1246 echo " $srcdir/config/$f"
1250 if test x$need_64bit_hwint = xyes; then
1251 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1252 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1255 if test x$use_long_long_for_widest_fast_int = xyes; then
1256 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1257 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1258 efficiently supported by the host hardware.])
1262 for f in $host_xm_file; do
1265 if test $count = a; then
1267 elif test $count = ax; then
1268 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1270 echo "Using the following host machine macro files:"
1271 for f in $host_xm_file; do
1272 echo " $srcdir/config/$f"
1275 echo "Using ${out_host_hook_obj} for host machine hooks."
1277 if test "$host_xm_file" != "$build_xm_file"; then
1279 for f in $build_xm_file; do
1282 if test $count = a; then
1284 elif test $count = ax; then
1285 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1287 echo "Using the following build machine macro files:"
1288 for f in $build_xm_file; do
1289 echo " $srcdir/config/$f"
1296 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1297 gcc_cv_mcontext_underscores,
1299 #include <sys/cdefs.h>
1300 #include <sys/signal.h>
1301 #include <ucontext.h>
1302 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1304 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1305 if test $gcc_cv_mcontext_underscores = yes; then
1306 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1307 [mcontext_t fields start with __])
1316 # Check if a valid thread package
1317 case ${enable_threads} in
1320 target_thread_file='single'
1324 target_thread_file='single'
1326 aix | dce | gnat | irix | posix | posix95 | rtems | \
1327 single | solaris | vxworks | win32 | mipssde)
1328 target_thread_file=${enable_threads}
1331 echo "${enable_threads} is an unknown thread package" 1>&2
1336 if test x${thread_file} = x; then
1337 # No thread file set by target-specific clauses in config.gcc,
1338 # so use file chosen by default logic above
1339 thread_file=${target_thread_file}
1342 # Make gthr-default.h if we have a thread file.
1344 if test $thread_file != single; then
1345 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1346 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1347 rm -f gthr-default.h-t
1349 mv -f gthr-default.h-t gthr-default.h
1351 gthread_flags=-DHAVE_GTHR_DEFAULT
1353 AC_SUBST(gthread_flags)
1360 if test x$enable___cxa_atexit = xyes || \
1361 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1362 if test x$host = x$target; then
1364 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1365 # keyed to flag_use_cxa_atexit
1370 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1371 [echo "__cxa_atexit can't be enabled on this target"])
1375 # We can't check for __cxa_atexit when building a cross, so assume
1379 if test x$use_cxa_atexit = xyes; then
1380 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1381 [Define if you want to use __cxa_atexit, rather than atexit, to
1382 register C++ destructors for local statics and global objects.
1383 This is essential for fully standards-compliant handling of
1384 destructors, but requires __cxa_atexit in libc.])
1388 # Look for a file containing extra machine modes.
1389 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1390 extra_modes_file='$(srcdir)'/config/${extra_modes}
1391 AC_SUBST(extra_modes_file)
1392 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1393 [Define to the name of a file containing a list of extra machine modes
1394 for this architecture.])
1397 # Convert extra_options into a form suitable for Makefile use.
1399 for f in $extra_options; do
1400 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1402 AC_SUBST(extra_opt_files)
1404 # auto-host.h is the file containing items generated by autoconf and is
1405 # the first file included by config.h.
1406 # If host=build, it is correct to have bconfig include auto-host.h
1407 # as well. If host!=build, we are in error and need to do more
1408 # work to find out the build config parameters.
1409 if test x$host = x$build
1411 build_auto=auto-host.h
1413 # We create a subdir, then run autoconf in the subdir.
1414 # To prevent recursion we set host and build for the new
1415 # invocation of configure to the build for this invocation
1422 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1423 *) realsrcdir=../${srcdir};;
1425 saved_CFLAGS="${CFLAGS}"
1426 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1427 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1428 ${realsrcdir}/configure \
1429 --enable-languages=${enable_languages-all} \
1430 --target=$target_alias --host=$build_alias --build=$build_alias
1431 CFLAGS="${saved_CFLAGS}"
1433 # We just finished tests for the build machine, so rename
1434 # the file auto-build.h in the gcc directory.
1435 mv auto-host.h ../auto-build.h
1438 build_auto=auto-build.h
1440 AC_SUBST(build_subdir)
1442 tm_file="${tm_file} defaults.h"
1443 tm_p_file="${tm_p_file} tm-preds.h"
1444 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1445 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1446 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1447 # put this back in temporarily.
1448 xm_file="auto-host.h ansidecl.h ${xm_file}"
1455 # Compile in configure arguments.
1456 if test -f configargs.h ; then
1457 # Being re-configured.
1458 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1459 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1461 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1464 # Double all backslashes and backslash all quotes to turn
1465 # gcc_config_arguments into a C string.
1466 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1467 $gcc_config_arguments
1469 gcc_config_arguments_str=`cat conftest.out`
1472 cat > configargs.h <<EOF
1473 /* Generated automatically. */
1474 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1475 static const char thread_model[] = "$thread_file";
1477 static const struct {
1478 const char *name, *value;
1479 } configure_default_options[] = $configure_default_options;
1484 gcc_BASEVER=`cat $srcdir/BASE-VER`
1485 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1486 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1487 if test -f $srcdir/REVISION ; then
1488 gcc_REVISION=`cat $srcdir/REVISION`
1492 cat > plugin-version.h <<EOF
1493 #include "configargs.h"
1495 static char basever[] = "$gcc_BASEVER";
1496 static char datestamp[] = "$gcc_DATESTAMP";
1497 static char devphase[] = "$gcc_DEVPHASE";
1498 static char revision[] = "$gcc_REVISION";
1500 /* FIXME plugins: We should make the version information more precise.
1501 One way to do is to add a checksum. */
1503 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1505 configuration_arguments};
1509 # Internationalization
1510 ZW_GNU_GETTEXT_SISTER_DIR
1512 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1513 # -liconv on the link line twice.
1514 case "$LIBINTL" in *$LIBICONV*)
1518 AC_ARG_ENABLE(secureplt,
1519 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1522 AC_ARG_ENABLE(leading-mingw64-underscores,
1523 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1524 [Enable leading underscores on 64 bit mingw targets]),
1526 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1527 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1528 [Define if we should use leading underscore on 64 bit mingw targets])])
1531 [ --enable-cld enable -mcld by default for 32bit x86], [],
1534 AC_ARG_ENABLE(frame-pointer,
1535 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1538 linux* | darwin[[8912]]*)
1539 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1541 enable_frame_pointer=no
1544 enable_frame_pointer=yes
1549 # Windows32 Registry support for specifying GCC installation paths.
1550 AC_ARG_ENABLE(win32-registry,
1551 [ --disable-win32-registry
1552 disable lookup of installation paths in the
1553 Registry on Windows hosts
1554 --enable-win32-registry enable registry lookup (default)
1555 --enable-win32-registry=KEY
1556 use KEY instead of GCC version as the last portion
1557 of the registry key],,)
1560 win32 | pe | cygwin* | mingw32* | uwin*)
1561 if test "x$enable_win32_registry" != xno; then
1562 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1565 if test "x$enable_win32_registry" != xno; then
1566 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1567 [Define to 1 if installation paths should be looked up in the Windows
1568 Registry. Ignored on non-Windows hosts.])
1570 if test "x$enable_win32_registry" != xyes \
1571 && test "x$enable_win32_registry" != x; then
1572 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1573 [Define to be the last component of the Windows registry key under which
1574 to look for installation paths. The full key used will be
1575 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1576 The default is the GCC version number.])
1582 # Get an absolute path to the GCC top-level source directory
1583 holddir=`${PWDCMD-pwd}`
1585 topdir=`${PWDCMD-pwd}`
1588 # Conditionalize the makefile for this host machine.
1590 for f in ${host_xmake_file}
1592 if test -f ${srcdir}/config/$f
1594 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1598 # Conditionalize the makefile for this target machine.
1600 for f in ${tmake_file}
1602 if test -f ${srcdir}/config/$f
1604 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1607 tmake_file="${tmake_file_}"
1609 out_object_file=`basename $out_file .c`.o
1611 tm_file_list="options.h"
1612 tm_include_list="options.h insn-constants.h"
1613 for f in $tm_file; do
1616 f=`echo $f | sed 's/^..//'`
1617 tm_file_list="${tm_file_list} $f"
1618 tm_include_list="${tm_include_list} $f"
1621 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1622 tm_include_list="${tm_include_list} $f"
1625 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1626 tm_include_list="${tm_include_list} config/$f"
1633 for f in $tm_p_file; do
1636 tm_p_file_list="${tm_p_file_list} $f"
1637 tm_p_include_list="${tm_p_include_list} $f"
1640 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1641 tm_p_include_list="${tm_p_include_list} config/$f"
1647 for f in $xm_file; do
1650 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1651 xm_include_list="${xm_include_list} $f"
1654 xm_file_list="${xm_file_list} $f"
1655 xm_include_list="${xm_include_list} $f"
1658 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1659 xm_include_list="${xm_include_list} config/$f"
1665 host_xm_include_list=
1666 for f in $host_xm_file; do
1669 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1670 host_xm_include_list="${host_xm_include_list} $f"
1673 host_xm_file_list="${host_xm_file_list} $f"
1674 host_xm_include_list="${host_xm_include_list} $f"
1677 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1678 host_xm_include_list="${host_xm_include_list} config/$f"
1684 for f in $build_xm_file; do
1687 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1688 build_xm_include_list="${build_xm_include_list} $f"
1690 auto-build.h | auto-host.h )
1691 build_xm_file_list="${build_xm_file_list} $f"
1692 build_xm_include_list="${build_xm_include_list} $f"
1695 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1696 build_xm_include_list="${build_xm_include_list} config/$f"
1701 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1702 # cross-compiler which does not use the native headers and libraries.
1703 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1704 CROSS= AC_SUBST(CROSS)
1705 ALL=all.internal AC_SUBST(ALL)
1706 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1708 if test "x$with_build_sysroot" != x; then
1709 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1711 # This value is used, even on a native system, because
1712 # CROSS_SYSTEM_HEADER_DIR is just
1713 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1714 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1717 if test x$host != x$target
1719 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1721 SYSTEM_HEADER_DIR=$build_system_header_dir
1722 case "$host","$target" in
1723 # Darwin crosses can use the host system's libraries and headers,
1724 # because of the fat library support. Of course, it must be the
1725 # same version of Darwin on both sides. Allow the user to
1726 # just say --target=foo-darwin without a version number to mean
1727 # "the version on this system".
1728 *-*-darwin*,*-*-darwin*)
1729 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1730 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1731 if test $hostos = $targetos -o $targetos = darwin ; then
1733 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1738 i?86-*-*,x86_64-*-* \
1739 | powerpc*-*-*,powerpc64*-*-*)
1740 CROSS="$CROSS -DNATIVE_CROSS" ;;
1745 if test "x$with_headers" = x; then
1752 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1753 SYSTEM_HEADER_DIR=$build_system_header_dir
1756 # If this is a cross-compiler that does not
1757 # have its own set of headers then define
1760 # If this is using newlib, without having the headers available now,
1761 # then define inhibit_libc in LIBGCC2_CFLAGS.
1762 # This prevents libgcc2 from containing any code which requires libc
1764 : ${inhibit_libc=false}
1765 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1766 test x$with_newlib = xyes ; } &&
1767 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1770 AC_SUBST(inhibit_libc)
1772 # When building gcc with a cross-compiler, we need to adjust things so
1773 # that the generator programs are still built with the native compiler.
1774 # Also, we cannot run fixincludes.
1776 # These are the normal (build=host) settings:
1777 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1778 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1779 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1780 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1782 # And these apply if build != host, or we are generating coverage data
1783 if test x$build != x$host || test "x$coverage_flags" != x
1785 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1786 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1789 # Expand extra_headers to include complete path.
1790 # This substitutes for lots of t-* files.
1792 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1793 for file in ${extra_headers} ; do
1794 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1797 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1798 if test x"$use_gcc_tgmath" = xyes
1799 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1802 # Define collect2 in Makefile.
1803 case $host_can_use_collect2 in
1805 *) collect2='collect2$(exeext)' ;;
1807 AC_SUBST([collect2])
1809 # Add a definition of USE_COLLECT2 if system wants one.
1810 case $use_collect2 in
1811 no) use_collect2= ;;
1814 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1815 xm_defines="${xm_defines} USE_COLLECT2"
1816 case $host_can_use_collect2 in
1818 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1824 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1825 [Define to the name of the LTO plugin DSO that must be
1826 passed to the linker's -plugin=LIB option.])
1828 # ---------------------------
1829 # Assembler & linker features
1830 # ---------------------------
1832 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1833 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1834 # However when ld-new is first executed from the build tree, libtool will
1835 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1836 # to the build tree. While doing this we need to use the previous-stage
1837 # linker, or we have an infinite loop. The presence of a shell script as
1838 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1839 # the gcc/collect-ld script. So we need to know how libtool works, or
1840 # exec-tool will fail.
1842 m4_defun([_LT_CONFIG_COMMANDS], [])
1845 AC_SUBST(enable_fast_install)
1847 # Identify the assembler which will work hand-in-glove with the newly
1848 # built GCC, so that we can examine its features. This is the assembler
1849 # which will be driven by the driver program.
1851 # If build != host, and we aren't building gas in-tree, we identify a
1852 # build->target assembler and hope that it will have the same features
1853 # as the host->target assembler we'll be using.
1854 gcc_cv_gas_major_version=
1855 gcc_cv_gas_minor_version=
1856 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1858 m4_pattern_allow([AS_FOR_TARGET])dnl
1859 AS_VAR_SET_IF(gcc_cv_as,, [
1860 if test -x "$DEFAULT_ASSEMBLER"; then
1861 gcc_cv_as="$DEFAULT_ASSEMBLER"
1862 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1863 && test -f ../gas/Makefile \
1864 && test x$build = x$host; then
1865 gcc_cv_as=../gas/as-new$build_exeext
1866 elif test -x as$build_exeext; then
1867 # Build using assembler in the current directory.
1868 gcc_cv_as=./as$build_exeext
1869 elif test -x $AS_FOR_TARGET; then
1870 gcc_cv_as="$AS_FOR_TARGET"
1872 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1875 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1876 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1877 case "$ORIGINAL_AS_FOR_TARGET" in
1878 ./as | ./as$build_exeext) ;;
1879 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1882 AC_MSG_CHECKING(what assembler to use)
1883 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1884 # Single tree build which includes gas. We want to prefer it
1885 # over whatever linker top-level may have detected, since
1886 # we'll use what we're building after installation anyway.
1887 AC_MSG_RESULT(newly built gas)
1889 _gcc_COMPUTE_GAS_VERSION
1890 in_tree_gas_is_elf=no
1891 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1892 || (grep 'obj_format = multi' ../gas/Makefile \
1893 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1895 in_tree_gas_is_elf=yes
1898 AC_MSG_RESULT($gcc_cv_as)
1902 # Identify the linker which will work hand-in-glove with the newly
1903 # built GCC, so that we can examine its features. This is the linker
1904 # which will be driven by the driver program.
1906 # If build != host, and we aren't building gas in-tree, we identify a
1907 # build->target linker and hope that it will have the same features
1908 # as the host->target linker we'll be using.
1909 gcc_cv_gld_major_version=
1910 gcc_cv_gld_minor_version=
1911 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1912 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1914 AS_VAR_SET_IF(gcc_cv_ld,, [
1915 if test -x "$DEFAULT_LINKER"; then
1916 gcc_cv_ld="$DEFAULT_LINKER"
1917 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1918 && test -f ../ld/Makefile \
1919 && test x$build = x$host; then
1920 gcc_cv_ld=../ld/ld-new$build_exeext
1921 elif test -x collect-ld$build_exeext; then
1922 # Build using linker in the current directory.
1923 gcc_cv_ld=./collect-ld$build_exeext
1924 elif test -x $LD_FOR_TARGET; then
1925 gcc_cv_ld="$LD_FOR_TARGET"
1927 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1930 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1931 PLUGIN_LD=`basename $gcc_cv_ld`
1932 AC_ARG_WITH(plugin-ld,
1933 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1934 [if test x"$withval" != x; then
1935 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1936 PLUGIN_LD="$withval"
1938 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1939 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1941 # Check to see if we are using gold instead of ld
1942 AC_MSG_CHECKING(whether we are using gold)
1944 if test x$gcc_cv_ld != x; then
1945 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1946 | grep "GNU gold" > /dev/null; then
1950 AC_MSG_RESULT($ld_is_gold)
1952 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1953 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1954 case "$ORIGINAL_LD_FOR_TARGET" in
1955 ./collect-ld | ./collect-ld$build_exeext) ;;
1956 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1959 AC_MSG_CHECKING(what linker to use)
1960 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1961 # Single tree build which includes ld. We want to prefer it
1962 # over whatever linker top-level may have detected, since
1963 # we'll use what we're building after installation anyway.
1964 AC_MSG_RESULT(newly built ld)
1966 in_tree_ld_is_elf=no
1967 if (grep 'EMUL = .*elf' ../ld/Makefile \
1968 || grep 'EMUL = .*linux' ../ld/Makefile \
1969 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1970 in_tree_ld_is_elf=yes
1972 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
1975 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1976 if test x$gcc_cv_gld_version != x; then
1980 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1981 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1984 AC_MSG_RESULT($gcc_cv_ld)
1988 # Figure out what nm we will be using.
1989 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1990 AS_VAR_SET_IF(gcc_cv_nm,, [
1991 if test -f $gcc_cv_binutils_srcdir/configure.in \
1992 && test -f ../binutils/Makefile \
1993 && test x$build = x$host; then
1994 gcc_cv_nm=../binutils/nm-new$build_exeext
1995 elif test -x nm$build_exeext; then
1996 gcc_cv_nm=./nm$build_exeext
1997 elif test -x $NM_FOR_TARGET; then
1998 gcc_cv_nm="$NM_FOR_TARGET"
2000 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2003 AC_MSG_CHECKING(what nm to use)
2004 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2005 # Single tree build which includes binutils.
2006 AC_MSG_RESULT(newly built nm)
2009 AC_MSG_RESULT($gcc_cv_nm)
2013 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2014 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2015 case "$ORIGINAL_NM_FOR_TARGET" in
2016 ./nm | ./nm$build_exeext) ;;
2017 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2021 # Figure out what objdump we will be using.
2022 AS_VAR_SET_IF(gcc_cv_objdump,, [
2023 if test -f $gcc_cv_binutils_srcdir/configure.in \
2024 && test -f ../binutils/Makefile \
2025 && test x$build = x$host; then
2026 # Single tree build which includes binutils.
2027 gcc_cv_objdump=../binutils/objdump$build_exeext
2028 elif test -x objdump$build_exeext; then
2029 gcc_cv_objdump=./objdump$build_exeext
2030 elif test -x $OBJDUMP_FOR_TARGET; then
2031 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2033 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2036 AC_MSG_CHECKING(what objdump to use)
2037 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2038 # Single tree build which includes binutils.
2039 AC_MSG_RESULT(newly built objdump)
2040 elif test x$gcc_cv_objdump = x; then
2041 AC_MSG_RESULT(not found)
2043 AC_MSG_RESULT($gcc_cv_objdump)
2046 # Figure out what readelf we will be using.
2047 AS_VAR_SET_IF(gcc_cv_readelf,, [
2048 if test -f $gcc_cv_binutils_srcdir/configure.in \
2049 && test -f ../binutils/Makefile \
2050 && test x$build = x$host; then
2051 # Single tree build which includes binutils.
2052 gcc_cv_readelf=../binutils/readelf$build_exeext
2053 elif test -x readelf$build_exeext; then
2054 gcc_cv_readelf=./readelf$build_exeext
2056 AC_PATH_PROG(gcc_cv_readelf, readelf)
2059 AC_MSG_CHECKING(what readelf to use)
2060 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2061 # Single tree build which includes binutils.
2062 AC_MSG_RESULT(newly built readelf)
2063 elif test x$gcc_cv_readelf = x; then
2064 AC_MSG_RESULT(not found)
2066 AC_MSG_RESULT($gcc_cv_readelf)
2069 # Figure out what assembler alignment features are present.
2070 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2074 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2075 [Define if your assembler supports .balign and .p2align.])])
2077 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2080 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2081 [Define if your assembler supports specifying the maximum number
2082 of bytes to skip when using the GAS .p2align command.])])
2084 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2087 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2088 [Define if your assembler supports .literal16.])])
2090 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2092 [conftest_label1: .word 0
2094 conftest_label2: .word 0
2096 [if test x$gcc_cv_nm != x; then
2097 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2098 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2099 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2101 else gcc_cv_as_subsection_m1=yes
2103 rm -f conftest.nm1 conftest.nm2
2105 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2106 [Define if your assembler supports .subsection and .subsection -1 starts
2107 emitting at the beginning of your section.])])
2109 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2112 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2114 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2116 [ .weakref foobar, barfnot],,
2117 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2119 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2122 .NSUBSPA $CODE$,COMDAT],,
2123 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2125 # .hidden needs to be supported in both the assembler and the linker,
2126 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2127 # This is irritatingly difficult to feature test for; we have to check the
2128 # date string after the version number. If we've got an in-tree
2129 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2131 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2132 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2136 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2137 # STV_HIDDEN, so disable .hidden support if so.
2140 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2141 cat > conftest.s <<EOF
2148 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2149 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2150 grep '\.hidden default' > /dev/null; then
2153 gcc_cv_as_hidden=yes
2156 # Assume bug is present if objdump is missing.
2161 gcc_cv_as_hidden=yes
2165 # gnu_indirect_function type is an extension proposed at
2166 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2167 # selection of function implementation
2168 AC_ARG_ENABLE(gnu-indirect-function,
2169 [AS_HELP_STRING([--enable-gnu-indirect-function],
2170 [enable the use of the @gnu_indirect_function to glibc systems])],
2171 [case $enable_gnu_indirect_function in
2173 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2174 Valid choices are 'yes' and 'no'.]) ;;
2176 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2177 if test x$enable_gnu_indirect_function = xyes; then
2178 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2179 [Define if your system supports gnu indirect functions.])
2183 if test $in_tree_ld != yes ; then
2184 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2185 if test x"$ld_is_gold" = xyes; then
2186 gcc_cv_ld_hidden=yes
2187 elif echo "$ld_ver" | grep GNU > /dev/null; then
2188 ld_vers=`echo $ld_ver | sed -n \
2189 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2190 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2191 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2192 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2193 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2198 # Solaris 2 ld -V output looks like this for a regular version:
2200 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2202 # but test versions add stuff at the end:
2204 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2206 ld_ver=`$gcc_cv_ld -V 2>&1`
2207 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2208 ld_vers=`echo $ld_ver | sed -n \
2209 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2210 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2211 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2219 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2220 [[if test $in_tree_ld = yes ; then
2222 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2223 && test $in_tree_ld_is_elf = yes; then
2224 gcc_cv_ld_hidden=yes
2227 gcc_cv_ld_hidden=yes
2228 if echo "$ld_ver" | grep GNU > /dev/null; then
2229 if test 0"$ld_date" -lt 20020404; then
2230 if test -n "$ld_date"; then
2231 # If there was date string, but was earlier than 2002-04-04, fail
2233 elif test -z "$ld_vers"; then
2234 # If there was no date string nor ld version number, something is wrong
2237 test -z "$ld_vers_patch" && ld_vers_patch=0
2238 if test "$ld_vers_major" -lt 2; then
2240 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2241 gcc_cv_ld_hidden="no"
2242 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2249 hppa64*-*-hpux* | ia64*-*-hpux*)
2250 gcc_cv_ld_hidden=yes
2253 # .hidden support was backported to Solaris 8, starting with ld
2255 if test "$ld_vers_minor" -ge 276; then
2256 gcc_cv_ld_hidden=yes
2261 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2262 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2263 # .symbolic was only added in Solaris 9 12/02.
2264 gcc_cv_ld_hidden=yes
2272 libgcc_visibility=no
2273 AC_SUBST(libgcc_visibility)
2274 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2275 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2276 libgcc_visibility=yes
2277 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2278 [Define if your assembler and linker support .hidden.])
2281 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2282 gcc_cv_ld_ro_rw_mix=unknown
2283 if test $in_tree_ld = yes ; then
2284 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2285 && test $in_tree_ld_is_elf = yes; then
2286 gcc_cv_ld_ro_rw_mix=read-write
2288 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2289 echo '.section myfoosect, "a"' > conftest1.s
2290 echo '.section myfoosect, "aw"' > conftest2.s
2291 echo '.byte 1' >> conftest2.s
2292 echo '.section myfoosect, "a"' > conftest3.s
2293 echo '.byte 0' >> conftest3.s
2294 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2295 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2296 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2297 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2298 conftest2.o conftest3.o > /dev/null 2>&1; then
2299 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2300 | sed -e '/myfoosect/!d' -e N`
2301 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2302 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2303 gcc_cv_ld_ro_rw_mix=read-only
2305 gcc_cv_ld_ro_rw_mix=read-write
2310 rm -f conftest.* conftest[123].*
2313 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2314 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2315 [Define if your linker links a mix of read-only
2316 and read-write sections into a read-write section.])
2318 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2320 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2321 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2329 [[# GAS versions before 2.11 do not support uleb128,
2330 # despite appearing to.
2331 # ??? There exists an elf-specific test that will crash
2332 # the assembler. Perhaps it's better to figure out whether
2333 # arbitrary sections are supported and try the test.
2334 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2335 if echo "$as_ver" | grep GNU > /dev/null; then
2336 as_vers=`echo $as_ver | sed -n \
2337 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2338 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2339 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2340 if test $as_major -eq 2 && test $as_minor -lt 11
2342 else gcc_cv_as_leb128=yes
2345 [AC_DEFINE(HAVE_AS_LEB128, 1,
2346 [Define if your assembler supports .sleb128 and .uleb128.])])
2348 # Check if we have assembler support for unwind directives.
2349 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2356 .cfi_escape 1, 2, 3, 4, 5
2360 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2361 # read-only and read-write sections, we need to make sure that the
2362 # assembler used emits read-write .eh_frame sections.
2363 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2364 if test "x$gcc_cv_objdump" != x; then
2365 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2366 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2367 gcc_cv_as_cfi_directive=no
2370 i?86-*-solaris2.1[[0-9]]*)
2371 # On Solaris/x86, make sure that GCC and gas agree on using
2372 # read-only .eh_frame sections for 64-bit.
2373 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2374 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2375 sed -e /.eh_frame/!d -e N | \
2376 grep READONLY > /dev/null; then
2377 gcc_cv_as_cfi_directive=yes
2379 gcc_cv_as_cfi_directive=no
2383 gcc_cv_as_cfi_directive=yes
2388 # no objdump, err on the side of caution
2389 gcc_cv_as_cfi_directive=no
2392 gcc_cv_as_cfi_directive=yes
2396 gcc_cv_as_cfi_directive=yes
2399 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2400 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2404 .cfi_adjust_cfa_offset 64
2406 .cfi_adjust_cfa_offset 128
2409 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2410 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2411 gcc_cv_as_cfi_advance_working=yes
2415 # no objdump, err on the side of caution
2416 gcc_cv_as_cfi_advance_working=no
2418 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2419 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2420 [`if test $gcc_cv_as_cfi_directive = yes \
2421 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2422 [Define 0/1 if your assembler supports CFI directives.])
2424 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2425 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2426 gcc_cv_as_cfi_personality_directive, ,,
2429 .cfi_personality 0, symbol
2431 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2432 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2433 then echo 1; else echo 0; fi`],
2434 [Define 0/1 if your assembler supports .cfi_personality.])
2436 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2437 gcc_cv_as_cfi_sections_directive, ,,
2439 .cfi_sections .debug_frame, .eh_frame
2443 win32 | pe | cygwin* | mingw32* | uwin*)
2444 # Need to check that we generated the correct relocation for the
2445 # .debug_frame section. This was fixed for binutils 2.21.
2446 gcc_cv_as_cfi_sections_directive=no
2447 if test "x$gcc_cv_objdump" != x; then
2448 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2449 grep secrel > /dev/null; then
2450 gcc_cv_as_cfi_sections_directive=yes
2455 gcc_cv_as_cfi_sections_directive=yes
2458 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2459 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2460 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2461 then echo 1; else echo 0; fi`],
2462 [Define 0/1 if your assembler supports .cfi_sections.])
2464 # GAS versions up to and including 2.11.0 may mis-optimize
2466 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2474 .section .eh_frame,"aw",@progbits
2476 .4byte .LECIE1-.LSCIE1
2490 .4byte .LEFDE1-.LASFDE1
2492 .4byte .LASFDE1-__FRAME_BEGIN__
2500 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2501 cat > conftest.lit <<EOF
2502 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2503 0010 01000000 12000000 18000000 00000000 ................
2504 0020 08000000 04080000 0044 .........D @&t@
2506 cat > conftest.big <<EOF
2507 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2508 0010 00000001 00000012 00000018 00000000 ................
2509 0020 00000008 04000000 0844 .........D @&t@
2511 # If the assembler didn't choke, and we can objdump,
2512 # and we got the correct data, then succeed.
2513 # The text in the here-document typically retains its unix-style line
2514 # endings, while the output of objdump will use host line endings.
2515 # Therefore, use diff -b for the comparisons.
2516 if test x$gcc_cv_objdump != x \
2517 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2518 | tail -3 > conftest.got \
2519 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2520 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2522 gcc_cv_as_eh_frame=yes
2523 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2524 gcc_cv_as_eh_frame=buggy
2526 # Uh oh, what do we do now?
2527 gcc_cv_as_eh_frame=no
2530 if test $gcc_cv_as_eh_frame = buggy; then
2531 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2532 [Define if your assembler mis-optimizes .eh_frame data.])
2535 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2536 [elf,2,12,0], [--fatal-warnings],
2537 [.section .rodata.str, "aMS", @progbits, 1])
2538 if test $gcc_cv_as_shf_merge = no; then
2539 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2540 [elf,2,12,0], [--fatal-warnings],
2541 [.section .rodata.str, "aMS", %progbits, 1])
2543 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2544 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2545 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2547 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2548 [elf,2,16,0], [--fatal-warnings],
2549 [.section .text,"axG",@progbits,.foo,comdat])
2550 if test $gcc_cv_as_comdat_group = yes; then
2551 gcc_cv_as_comdat_group_percent=no
2553 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2554 [elf,2,16,0], [--fatal-warnings],
2555 [.section .text,"axG",%progbits,.foo,comdat])
2557 if test x"$ld_is_gold" = xyes; then
2559 elif test $in_tree_ld = yes ; then
2561 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2562 && test $in_tree_ld_is_elf = yes; then
2565 elif echo "$ld_ver" | grep GNU > /dev/null; then
2567 if test 0"$ld_date" -lt 20050308; then
2568 if test -n "$ld_date"; then
2569 # If there was date string, but was earlier than 2005-03-08, fail
2571 elif test "$ld_vers_major" -lt 2; then
2573 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2580 *-*-solaris2.1[1-9]*)
2581 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2582 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2585 # FIXME: Maybe need to refine later when COMDAT group support with
2586 # Sun as is implemented.
2587 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2594 # Assume linkers other than GNU ld don't support COMDAT group.
2600 # Allow overriding the automatic COMDAT group tests above.
2601 AC_ARG_ENABLE(comdat,
2602 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2603 [comdat_group="$enable_comdat"])
2604 if test $comdat_group = no; then
2605 gcc_cv_as_comdat_group=no
2606 gcc_cv_as_comdat_group_percent=no
2608 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2609 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2610 [Define 0/1 if your assembler and linker support COMDAT groups.])
2612 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2613 gcc_cv_as_discriminator,
2617 .loc 1 1 0 discriminator 1],,
2618 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2619 [Define if your assembler supports the .loc discriminator sub-directive.])])
2621 # Thread-local storage - the check is heavily parameterized.
2630 .section ".tdata","awT",@progbits
2633 ldq $27,__tls_get_addr($29) !literal!1
2634 lda $16,foo($29) !tlsgd!1
2635 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2636 ldq $27,__tls_get_addr($29) !literal!2
2637 lda $16,foo($29) !tlsldm!2
2638 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2639 ldq $1,foo($29) !gotdtprel
2640 ldah $2,foo($29) !dtprelhi
2641 lda $3,foo($2) !dtprello
2642 lda $4,foo($29) !dtprel
2643 ldq $1,foo($29) !gottprel
2644 ldah $2,foo($29) !tprelhi
2645 lda $3,foo($2) !tprello
2646 lda $4,foo($29) !tprel'
2649 tls_as_opt=--fatal-warnings
2651 cris-*-*|crisv32-*-*)
2653 .section ".tdata","awT",@progbits
2660 tls_as_opt=--fatal-warnings
2664 .section ".tdata","awT",@progbits
2676 .section ".tdata","awT",@progbits
2680 addil LT%foo-$tls_gdidx$,gp
2681 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2684 addil LT%foo-$tls_ldidx$,gp
2686 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2687 addil LR%foo-$tls_dtpoff$,%ret0
2688 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2690 addil LT%foo-$tls_ieoff$,gp
2691 ldw RT%foo-$tls_ieoff$(%r1),%t2
2694 addil LR%foo-$tls_leoff$,%t1
2695 ldo RR%foo-$tls_leoff$(%r1),%t2'
2698 tls_as_opt=--fatal-warnings
2702 .section ".tdata","awT",%progbits
2715 i[34567]86-*-solaris2.*)
2717 tga_func=___tls_get_addr
2723 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2725 .section .tdata,"awt",@progbits'
2729 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2730 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2734 .section ".tdata","awT",@progbits'
2737 tls_as_opt="--fatal-warnings"
2739 conftest_s="$conftest_s
2743 leal foo@tlsgd(,%ebx,1), %eax
2744 leal foo@tlsldm(%ebx), %eax
2745 leal foo@dtpoff(%eax), %edx
2746 movl foo@gottpoff(%ebx), %eax
2747 subl foo@gottpoff(%ebx), %eax
2748 addl foo@gotntpoff(%ebx), %eax
2749 movl foo@indntpoff, %eax
2750 movl \$foo@tpoff, %eax
2751 subl \$foo@tpoff, %eax
2752 leal foo@ntpoff(%ecx), %eax"
2756 .section ".tdata","awT",@progbits
2760 leaq foo@TLSGD(%rip), %rdi
2761 leaq foo@TLSLD(%rip), %rdi
2762 leaq foo@DTPOFF(%rax), %rdx
2763 movq foo@GOTTPOFF(%rip), %rax
2764 movq $foo@TPOFF, %rax'
2767 tls_as_opt=--fatal-warnings
2771 .section ".tdata","awT",@progbits
2774 addl r16 = @ltoff(@dtpmod(foo#)), gp
2775 addl r17 = @ltoff(@dtprel(foo#)), gp
2776 addl r18 = @ltoff(@tprel(foo#)), gp
2777 addl r19 = @dtprel(foo#), gp
2778 adds r21 = @dtprel(foo#), r13
2779 movl r23 = @dtprel(foo#)
2780 addl r20 = @tprel(foo#), gp
2781 adds r22 = @tprel(foo#), r13
2782 movl r24 = @tprel(foo#)'
2785 tls_as_opt=--fatal-warnings
2789 .section .tdata,"awT",@progbits
2793 addiu $4, $28, %tlsgd(x)
2794 addiu $4, $28, %tlsldm(x)
2795 lui $4, %dtprel_hi(x)
2796 addiu $4, $4, %dtprel_lo(x)
2797 lw $4, %gottprel(x)($28)
2798 lui $4, %tprel_hi(x)
2799 addiu $4, $4, %tprel_lo(x)'
2802 tls_as_opt='-32 --fatal-warnings'
2806 .section .tdata,"awT",@progbits
2811 move.l x@TLSGD(%a5),%a0
2812 move.l x@TLSLDM(%a5),%a0
2813 move.l x@TLSLDO(%a5),%a0
2814 move.l x@TLSIE(%a5),%a0
2815 move.l x@TLSLE(%a5),%a0'
2818 tls_as_opt='--fatal-warnings'
2822 .section ".tdata","awT",@progbits
2830 addi 3,31,ld0@got@tlsgd
2832 addi 3,31,x1@got@tlsld
2835 addis 9,3,x2@dtprel@ha
2836 addi 9,9,x2@dtprel@l
2837 lwz 9,x3@got@tprel(31)
2840 addis 9,2,x2@tprel@ha
2841 addi 9,9,x2@tprel@l'
2844 tls_as_opt="-a32 --fatal-warnings"
2848 .section ".tdata","awT",@progbits
2856 addi 3,2,ld0@got@tlsgd
2862 addi 3,2,x1@got@tlsld
2868 addis 9,3,x2@dtprel@ha
2869 addi 9,9,x2@dtprel@l
2872 ld 9,x3@got@dtprel(2)
2878 tls_as_opt="-a64 --fatal-warnings"
2882 .section ".tdata","awT",@progbits
2891 l %r1,foo@GOTNTPOFF(%r12)
2892 l %r1,0(%r1):tls_load:foo
2893 bas %r14,0(%r1,%r13):tls_gdcall:foo
2894 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2897 tls_as_opt="-m31 --fatal-warnings"
2901 .section ".tdata","awT",@progbits
2909 lg %r1,foo@GOTNTPOFF(%r12)
2910 larl %r1,foo@INDNTPOFF
2911 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2912 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2915 tls_as_opt="-m64 -Aesame --fatal-warnings"
2917 sh-*-* | sh[34]-*-*)
2919 .section ".tdata","awT",@progbits
2929 tls_as_opt=--fatal-warnings
2933 sparc*-sun-solaris2.*)
2935 tga_func=__tls_get_addr
2941 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2943 .section ".tdata",#alloc,#write,#tls'
2948 .section ".tdata","awT",@progbits'
2951 tls_as_opt="-32 --fatal-warnings"
2953 conftest_s="$conftest_s
2956 sethi %tgd_hi22(foo), %o0
2957 add %o0, %tgd_lo10(foo), %o1
2958 add %l7, %o1, %o0, %tgd_add(foo)
2959 call __tls_get_addr, %tgd_call(foo)
2960 sethi %tldm_hi22(foo), %l1
2961 add %l1, %tldm_lo10(foo), %l2
2962 add %l7, %l2, %o0, %tldm_add(foo)
2963 call __tls_get_addr, %tldm_call(foo)
2964 sethi %tldo_hix22(foo), %l3
2965 xor %l3, %tldo_lox10(foo), %l4
2966 add %o0, %l4, %l5, %tldo_add(foo)
2967 sethi %tie_hi22(foo), %o3
2968 add %o3, %tie_lo10(foo), %o3
2969 ld [%l7 + %o3], %o2, %tie_ld(foo)
2970 add %g7, %o2, %o4, %tie_add(foo)
2971 sethi %tle_hix22(foo), %l1
2972 xor %l1, %tle_lox10(foo), %o5
2973 ld [%g7 + %o5], %o1"
2977 .section ".tdata","awT",@progbits
2980 movi a8, foo@TLSFUNC
2981 movi a10, foo@TLSARG
2982 callx8.tls a8, foo@TLSCALL'
2989 if test "x$enable_tls" = xno ; then
2990 : # TLS explicitly disabled.
2991 elif test "x$enable_tls" = xyes ; then
2992 set_have_as_tls=yes # TLS explicitly enabled.
2993 elif test -z "$tls_first_major"; then
2994 : # If we don't have a check, assume no support.
2996 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2997 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2998 [set_have_as_tls=yes])
3001 # TLS was introduced in the Solaris 9 FCS release and backported to
3002 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3003 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3004 # ld and GCC don't support any longer.
3006 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3008 # Check ld and ld.so.1 TLS support.
3009 if echo "$ld_ver" | grep GNU > /dev/null; then
3010 # Assume all interesting versions of GNU ld have TLS support.
3011 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3015 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3017 min_tls_ld_vers_minor=280
3019 # Solaris 8/SPARC ld has TLS support since version 1.272.
3020 sparc*-*-solaris2.8)
3021 min_tls_ld_vers_minor=272
3023 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3025 min_tls_ld_vers_minor=374
3027 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3028 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3029 min_tls_ld_vers_minor=343
3032 if test "$ld_vers_major" -gt 1 || \
3033 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3039 AC_MSG_RESULT($ld_tls_support)
3042 save_LDFLAGS="$LDFLAGS"
3046 AC_MSG_CHECKING(alternate thread library)
3048 # TLS support was backported to Solaris 8 patches, but only lives in
3049 # the alternate thread library which became the default in Solaris 9.
3050 # We want to always use that, irrespective of TLS support.
3052 # Take multilib subdir into account. There's no spec to handle
3053 # this. The 64 symlink exists since Solaris 8.
3054 lwp_dir=/usr/lib/lwp
3055 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3056 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3063 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3064 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3065 [Define to the linker flags to use for -pthread.])
3066 AC_MSG_RESULT($lwp_dir)
3068 AC_MSG_CHECKING(library containing $tga_func)
3069 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3070 # (32-bit x86) only lived in libthread, so check for that. Keep
3071 # set_have_as_tls if found, disable if not.
3072 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3073 # Clear LIBS if we cannot support TLS.
3074 if test $set_have_as_tls = no; then
3077 # Always define LIB_TLS_SPEC, even without TLS support.
3078 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3079 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3080 AC_MSG_RESULT($LIBS)
3083 LDFLAGS="$save_LDFLAGS"
3086 if test $set_have_as_tls = yes ; then
3087 AC_DEFINE(HAVE_AS_TLS, 1,
3088 [Define if your assembler and linker support thread-local storage.])
3091 # Target-specific assembler checks.
3093 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3094 gcc_cv_ld_static_dynamic=no
3095 if test $in_tree_ld = yes ; then
3096 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3097 gcc_cv_ld_static_dynamic=yes
3099 elif test x$gcc_cv_ld != x; then
3100 # Check if linker supports -Bstatic/-Bdynamic option
3101 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3102 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3103 gcc_cv_ld_static_dynamic=yes
3106 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3107 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3108 [Define if your linker supports -Bstatic/-Bdynamic option.])
3110 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3112 if test x"$demangler_in_ld" = xyes; then
3113 AC_MSG_CHECKING(linker --demangle support)
3114 gcc_cv_ld_demangle=no
3115 if test $in_tree_ld = yes; then
3116 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3117 gcc_cv_ld_demangle=yes
3119 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3120 # Check if the GNU linker supports --demangle option
3121 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3122 gcc_cv_ld_demangle=yes
3125 if test x"$gcc_cv_ld_demangle" = xyes; then
3126 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3127 [Define if your linker supports --demangle option.])
3129 AC_MSG_RESULT($gcc_cv_ld_demangle)
3133 # All TARGET_ABI_OSF targets.
3134 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3135 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3136 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3139 extbl $3, $2, $3 !lituse_bytoff!1
3140 ldq $2, a($29) !literal!1
3141 ldq $4, b($29) !literal!2
3142 ldq_u $3, 0($2) !lituse_base!1
3143 ldq $27, f($29) !literal!5
3144 jsr $26, ($27), f !lituse_jsr!5
3145 ldah $29, 0($26) !gpdisp!3
3146 lda $0, c($29) !gprel
3147 ldah $1, d($29) !gprelhigh
3148 lda $1, d($1) !gprellow
3149 lda $29, 0($29) !gpdisp!3],,
3150 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3151 [Define if your assembler supports explicit relocations.])])
3152 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3153 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3156 ldq $27, a($29) !literal!1
3157 jsr $26, ($27), a !lituse_jsrdirect!1],,
3158 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3159 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3163 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3164 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3165 [-no-mul-bug-abort], [.text],,
3166 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3167 [Define if your assembler supports the -no-mul-bug-abort option.])])
3171 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3172 [.register %g2, #scratch],,
3173 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3174 [Define if your assembler supports .register.])])
3176 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3178 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3179 [Define if your assembler supports -relax option.])])
3181 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3182 gcc_cv_as_sparc_gotdata_op,,
3188 sethi %gdop_hix22(foo), %g1
3189 xor %g1, %gdop_lox10(foo), %g1
3190 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3191 [if test x$gcc_cv_ld != x \
3192 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3193 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3194 if test x$gcc_cv_objdump != x; then
3195 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3196 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3197 gcc_cv_as_sparc_gotdata_op=no
3199 gcc_cv_as_sparc_gotdata_op=yes
3203 gcc_cv_as_sparc_gotdata_op=yes
3207 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3208 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3210 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3211 gcc_cv_as_sparc_ua_pcrel,,
3219 .uaword %r_disp32(foo)],
3220 [if test x$gcc_cv_ld != x \
3221 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3222 gcc_cv_as_sparc_ua_pcrel=yes
3225 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3226 [Define if your assembler and linker support unaligned PC relative relocs.])
3228 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3229 gcc_cv_as_sparc_ua_pcrel_hidden,,
3234 .uaword %r_disp32(foo)
3235 .byte 0x32, 0x33, 0x34
3240 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3241 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3242 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3243 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3244 if $gcc_cv_objdump -R conftest 2> /dev/null \
3245 | grep 'DISP32' > /dev/null 2>&1; then
3248 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3252 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3253 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3254 ]) # unaligned pcrel relocs
3256 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3257 gcc_cv_as_sparc_offsetable_lo10,,
3260 or %g1, %lo(ab) + 12, %g1
3261 or %g1, %lo(ab + 12), %g1],
3262 [if test x$gcc_cv_objdump != x \
3263 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3264 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3265 gcc_cv_as_sparc_offsetable_lo10=yes
3267 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3268 [Define if your assembler supports offsetable %lo().])])
3272 i[34567]86-*-* | x86_64-*-*)
3276 # Full C++ conformance when using a shared libstdc++-v3 requires some
3277 # support from the Cygwin DLL, which in more recent versions exports
3278 # wrappers to aid in interposing and redirecting operators new, delete,
3279 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3280 # are configuring for a version of Cygwin that exports the wrappers.
3281 if test x$host = x$target; then
3282 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3284 # Can't check presence of libc functions during cross-compile, so
3285 # we just have to assume we're building for an up-to-date target.
3286 gcc_ac_cygwin_dll_wrappers=yes
3288 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3289 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3290 [Define if you want to generate code by default that assumes that the
3291 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3294 cygwin* | pe | mingw32*)
3295 # Recent binutils allows the three-operand form of ".comm" on PE. This
3296 # definition is used unconditionally to initialise the default state of
3297 # the target option variable that governs usage of the feature.
3298 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3299 [2,19,52],,[.comm foo,1,32])
3300 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3301 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3302 [Define if your assembler supports specifying the alignment
3303 of objects allocated using the GAS .comm command.])
3304 # Used for DWARF 2 in PE
3305 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3306 gcc_cv_as_ix86_pe_secrel32,
3312 [if test x$gcc_cv_ld != x \
3313 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3314 gcc_cv_as_ix86_pe_secrel32=yes
3317 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3318 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3319 # Test if the assembler supports the extended form of the .section
3320 # directive that specifies section alignment. LTO support uses this,
3321 # but normally only after installation, so we warn but don't fail the
3322 # configure if LTO is enabled but the assembler does not support it.
3323 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3324 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3325 if test x$gcc_cv_as_section_has_align != xyes; then
3326 case ",$enable_languages," in
3328 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3335 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3336 gcc_cv_as_ix86_filds,,,
3337 [filds mem; fists mem],,
3338 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3339 [Define if your assembler uses filds and fists mnemonics.])])
3341 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3342 gcc_cv_as_ix86_fildq,,,
3343 [fildq mem; fistpq mem],,
3344 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3345 [Define if your assembler uses fildq and fistq mnemonics.])])
3347 gcc_GAS_CHECK_FEATURE([cmov syntax],
3348 gcc_cv_as_ix86_cmov_sun_syntax,,,
3349 [cmovl.l %edx, %eax],,
3350 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3351 [Define if your assembler supports the Sun syntax for cmov.])])
3353 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3354 gcc_cv_as_ix86_ffreep,,,
3356 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3357 [Define if your assembler supports the ffreep mnemonic.])])
3359 gcc_GAS_CHECK_FEATURE([.quad directive],
3360 gcc_cv_as_ix86_quad,,,
3362 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3363 [Define if your assembler supports the .quad directive.])])
3365 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3366 gcc_cv_as_ix86_sahf,,,
3369 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3370 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3372 gcc_GAS_CHECK_FEATURE([swap suffix],
3373 gcc_cv_as_ix86_swap,,,
3374 [movl.s %esp, %ebp],,
3375 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3376 [Define if your assembler supports the swap suffix.])])
3378 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3379 gcc_cv_as_ix86_diff_sect_delta,,,
3387 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3388 [Define if your assembler supports the subtraction of symbols in different sections.])])
3390 # These two are used unconditionally by i386.[ch]; it is to be defined
3391 # to 1 if the feature is present, 0 otherwise.
3392 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3393 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3399 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3400 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3401 [Define true if the assembler supports '.long foo@GOTOFF'.])
3403 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3404 gcc_cv_as_ix86_rep_lock_prefix,,,
3406 lock addl %edi, (%eax,%esi)
3407 lock orl $0, (%esp)],,
3408 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3409 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3414 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3415 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3417 addl r15 = @ltoffx(x#), gp
3419 ld8.mov r16 = [[r15]], x#],,
3420 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3421 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3427 *-*-aix*) conftest_s=' .machine "pwr5"
3431 gcc_GAS_CHECK_FEATURE([.machine directive support],
3432 gcc_cv_as_machine_directive,,,
3433 [ .machine ppc7400])
3434 if test x$gcc_cv_as_machine_directive != xyes; then
3435 echo "*** This target requires an assembler supporting \".machine\"" >&2
3436 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3437 test x$build = x$target && exit 1
3441 *) conftest_s=' .machine power4
3446 gcc_GAS_CHECK_FEATURE([mfcr field support],
3447 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3449 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3450 [Define if your assembler supports mfcr field.])])
3453 *-*-aix*) conftest_s=' .machine "pwr5"
3456 *) conftest_s=' .machine power5
3461 gcc_GAS_CHECK_FEATURE([popcntb support],
3462 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3464 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3465 [Define if your assembler supports popcntb field.])])
3468 *-*-aix*) conftest_s=' .machine "pwr5x"
3471 *) conftest_s=' .machine power5
3476 gcc_GAS_CHECK_FEATURE([fp round support],
3477 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3479 [AC_DEFINE(HAVE_AS_FPRND, 1,
3480 [Define if your assembler supports fprnd.])])
3483 *-*-aix*) conftest_s=' .machine "pwr6"
3486 *) conftest_s=' .machine power6
3491 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3492 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3494 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3495 [Define if your assembler supports mffgpr and mftgpr.])])
3498 *-*-aix*) conftest_s=' .csect .text[[PR]]
3500 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3504 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3505 *) conftest_s=' .text
3507 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3510 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3511 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3513 [AC_DEFINE(HAVE_AS_REL16, 1,
3514 [Define if your assembler supports R_PPC_REL16 relocs.])])
3517 *-*-aix*) conftest_s=' .machine "pwr6"
3520 *) conftest_s=' .machine power6
3525 gcc_GAS_CHECK_FEATURE([compare bytes support],
3526 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3528 [AC_DEFINE(HAVE_AS_CMPB, 1,
3529 [Define if your assembler supports cmpb.])])
3532 *-*-aix*) conftest_s=' .machine "pwr6"
3535 *) conftest_s=' .machine power6
3540 gcc_GAS_CHECK_FEATURE([decimal float support],
3541 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3543 [AC_DEFINE(HAVE_AS_DFP, 1,
3544 [Define if your assembler supports DFP instructions.])])
3547 *-*-aix*) conftest_s=' .machine "pwr7"
3550 *) conftest_s=' .machine power7
3555 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3556 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3558 [AC_DEFINE(HAVE_AS_VSX, 1,
3559 [Define if your assembler supports VSX instructions.])])
3562 *-*-aix*) conftest_s=' .machine "pwr7"
3565 *) conftest_s=' .machine power7
3570 gcc_GAS_CHECK_FEATURE([popcntd support],
3571 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3573 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3574 [Define if your assembler supports POPCNTD instructions.])])
3577 *-*-aix*) conftest_s=' .csect .text[[PR]]
3579 *) conftest_s=' .text
3583 gcc_GAS_CHECK_FEATURE([lwsync support],
3584 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3586 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3587 [Define if your assembler supports LWSYNC instructions.])])
3590 *-*-aix*) conftest_s=' .machine "476"
3593 *) conftest_s=' .machine "476"
3598 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3599 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3601 [AC_DEFINE(HAVE_AS_DCI, 1,
3602 [Define if your assembler supports the DCI/ICI instructions.])])
3604 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3605 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3606 [.gnu_attribute 4,1],,
3607 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3608 [Define if your assembler supports .gnu_attribute.])])
3610 gcc_GAS_CHECK_FEATURE([tls marker support],
3611 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3612 [ bl __tls_get_addr(x@tlsgd)],,
3613 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3614 [Define if your assembler supports arg info for __tls_get_addr.])])
3618 gcc_GAS_CHECK_FEATURE([.ref support],
3619 gcc_cv_as_aix_ref, [2.21.0],,
3620 [ .csect stuff[[rw]]
3626 [AC_DEFINE(HAVE_AS_REF, 1,
3627 [Define if your assembler supports .ref])])
3633 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3634 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3635 [ lw $4,%gp_rel(foo)($4)],,
3636 [if test x$target_cpu_default = x
3637 then target_cpu_default=MASK_EXPLICIT_RELOCS
3638 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3640 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3641 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3642 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3643 [Define if the assembler understands -mno-shared.])])
3645 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3646 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3647 [.gnu_attribute 4,1],,
3648 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3649 [Define if your assembler supports .gnu_attribute.])])
3651 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3652 gcc_cv_as_mips_dtprelword, [2,18,0],,
3653 [.section .tdata,"awT",@progbits
3657 .dtprelword x+0x8000],,
3658 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3659 [Define if your assembler supports .dtprelword.])])
3661 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3662 gcc_cv_as_ld_jalr_reloc=no
3663 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3664 if test $in_tree_ld = yes ; then
3665 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3666 && test $in_tree_ld_is_elf = yes; then
3667 gcc_cv_as_ld_jalr_reloc=yes
3669 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3670 echo ' .ent x' > conftest.s
3671 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3672 echo ' ld $25,%call16(y)($28)' >> conftest.s
3673 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3674 echo '1: jalr $25' >> conftest.s
3675 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3676 echo '1: jalr $25' >> conftest.s
3677 echo ' .end x' >> conftest.s
3678 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3679 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3680 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3681 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3682 gcc_cv_as_ld_jalr_reloc=yes
3688 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3689 if test x$target_cpu_default = x; then
3690 target_cpu_default=MASK_RELAX_PIC_CALLS
3692 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3695 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3697 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3698 [gcc_cv_ld_mips_personality_relaxation],
3699 [gcc_cv_ld_mips_personality_relaxation=no
3700 if test $in_tree_ld = yes ; then
3701 if test "$gcc_cv_gld_major_version" -eq 2 \
3702 -a "$gcc_cv_gld_minor_version" -ge 21 \
3703 -o "$gcc_cv_gld_major_version" -gt 2; then
3704 gcc_cv_ld_mips_personality_relaxation=yes
3706 elif test x$gcc_cv_as != x \
3707 -a x$gcc_cv_ld != x \
3708 -a x$gcc_cv_readelf != x ; then
3709 cat > conftest.s <<EOF
3711 .cfi_personality 0x80,indirect_ptr
3718 .section .data,"aw",@progbits
3722 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3723 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3724 if $gcc_cv_readelf -d conftest 2>&1 \
3725 | grep TEXTREL > /dev/null 2>&1; then
3727 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3728 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3731 gcc_cv_ld_mips_personality_relaxation=yes
3735 rm -f conftest.s conftest.o conftest])
3736 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3737 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3738 [Define if your linker can relax absolute .eh_frame personality
3739 pointers into PC-relative form.])
3744 # Mips and HP-UX need the GNU assembler.
3745 # Linux on IA64 might be able to use the Intel assembler.
3748 mips*-*-* | *-*-hpux* )
3749 if test x$gas_flag = xyes \
3750 || test x"$host" != x"$build" \
3751 || test ! -x "$gcc_cv_as" \
3752 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3755 echo "*** This configuration requires the GNU assembler" >&2
3761 # ??? Not all targets support dwarf2 debug_line, even within a version
3762 # of gas. Moreover, we need to emit a valid instruction to trigger any
3763 # info to the output file. So, as supported targets are added to gas 2.11,
3764 # add some instruction here to (also) show we expect this might work.
3765 # ??? Once 2.11 is released, probably need to add first known working
3766 # version to the per-target configury.
3768 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3769 | x86_64*-*-* | hppa*-*-* | arm*-*-* | avr*-*-* \
3770 | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3771 | spu-*-* | fido*-*-* | m32c-*-* | microblaze-*-*)
3774 ia64*-*-* | s390*-*-*)
3781 if test x"$insn" != x; then
3783 .file 1 \"conftest.s\"
3786 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3787 gcc_cv_as_dwarf2_debug_line,
3788 [elf,2,11,0],, [$conftest_s],
3789 [if test x$gcc_cv_objdump != x \
3790 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3791 | grep debug_line > /dev/null 2>&1; then
3792 gcc_cv_as_dwarf2_debug_line=yes
3795 # The .debug_line file table must be in the exact order that
3796 # we specified the files, since these indices are also used
3797 # by DW_AT_decl_file. Approximate this test by testing if
3798 # the assembler bitches if the same index is assigned twice.
3799 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3800 gcc_cv_as_dwarf2_file_buggy,,,
3804 if test $gcc_cv_as_dwarf2_debug_line = yes \
3805 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3806 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3807 [Define if your assembler supports dwarf2 .file/.loc directives,
3808 and preserves file table indices exactly as given.])
3811 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3812 gcc_cv_as_gdwarf2_flag,
3813 [elf,2,11,0], [--gdwarf2], [$insn],,
3814 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3815 [Define if your assembler supports the --gdwarf2 option.])])
3817 gcc_GAS_CHECK_FEATURE([--gstabs option],
3818 gcc_cv_as_gstabs_flag,
3819 [elf,2,11,0], [--gstabs], [$insn],
3820 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3821 # and warns about it, but still exits successfully. So check for
3823 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3825 else gcc_cv_as_gstabs_flag=yes
3827 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3828 [Define if your assembler supports the --gstabs option.])])
3830 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3831 gcc_cv_as_debug_prefix_map_flag,
3832 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3833 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3834 [Define if your assembler supports the --debug-prefix-map option.])])
3837 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3840 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3841 [Define if your assembler supports .lcomm with an alignment field.])])
3843 AC_ARG_ENABLE(gnu-unique-object,
3844 [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on
3846 [case $enable_gnu_unique_object in
3848 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3849 Valid choices are 'yes' and 'no'.]) ;;
3851 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3853 [.type foo, @gnu_unique_object],,
3854 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3855 [[if test x$host = x$build -a x$host = x$target &&
3856 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3857 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3858 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3859 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3860 if test "$glibcnum" -ge 2011 ; then
3861 enable_gnu_unique_object=yes
3864 if test x$enable_gnu_unique_object = xyes; then
3865 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3866 [Define if your assembler supports @gnu_unique_object.])
3869 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3870 [gcc_cv_as_line_zero],
3871 [gcc_cv_as_line_zero=no
3872 if test $in_tree_gas = yes; then
3873 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3874 elif test "x$gcc_cv_as" != x; then
3875 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3876 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3877 test "x`cat conftest.out`" = x
3879 gcc_cv_as_line_zero=yes
3881 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3882 cat conftest.s >&AS_MESSAGE_LOG_FD
3883 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3884 cat conftest.out >&AS_MESSAGE_LOG_FD
3886 rm -f conftest.o conftest.s conftest.out
3888 if test "x$gcc_cv_as_line_zero" = xyes; then
3889 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3890 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3893 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3894 gcc_cv_ld_eh_frame_hdr=no
3895 if test $in_tree_ld = yes ; then
3896 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3897 && test $in_tree_ld_is_elf = yes; then
3898 gcc_cv_ld_eh_frame_hdr=yes
3900 elif test x$gcc_cv_ld != x; then
3901 # Check if linker supports --eh-frame-hdr option
3902 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3903 gcc_cv_ld_eh_frame_hdr=yes
3906 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3907 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3908 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3909 [Define if your linker supports --eh-frame-hdr option.])
3911 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3913 AC_MSG_CHECKING(linker position independent executable support)
3915 if test $in_tree_ld = yes ; then
3916 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3917 && test $in_tree_ld_is_elf = yes; then
3920 elif test x$gcc_cv_ld != x; then
3921 # Check if linker supports -pie option
3922 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3926 if test x"$gcc_cv_ld_pie" = xyes; then
3927 AC_DEFINE(HAVE_LD_PIE, 1,
3928 [Define if your linker supports -pie option.])
3930 AC_MSG_RESULT($gcc_cv_ld_pie)
3932 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3933 gcc_cv_ld_eh_gc_sections=no
3934 if test $in_tree_ld = yes ; then
3935 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3936 && test $in_tree_ld_is_elf = yes; then
3937 gcc_cv_ld_eh_gc_sections=yes
3939 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3940 cat > conftest.s <<EOF
3943 .type _start, @function
3946 .size _start, .-_start
3947 .section .text.foo,"ax",@progbits
3948 .type foo, @function
3952 .section .gcc_except_table.foo,"a",@progbits
3955 .section .eh_frame,"a",@progbits
3958 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3959 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3960 | grep "gc-sections option ignored" > /dev/null; then
3961 gcc_cv_ld_eh_gc_sections=no
3962 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3963 | grep gcc_except_table > /dev/null; then
3964 gcc_cv_ld_eh_gc_sections=yes
3965 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3966 if test x$gcc_cv_as_comdat_group != xyes; then
3967 gcc_cv_ld_eh_gc_sections=no
3968 cat > conftest.s <<EOF
3971 .type _start, @function
3974 .size _start, .-_start
3975 .section .gnu.linkonce.t.foo,"ax",@progbits
3976 .type foo, @function
3980 .section .gcc_except_table.foo,"a",@progbits
3983 .section .eh_frame,"a",@progbits
3986 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3987 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3988 | grep "gc-sections option ignored" > /dev/null; then
3989 gcc_cv_ld_eh_gc_sections=no
3990 elif $gcc_cv_objdump -h conftest 2> /dev/null \
3991 | grep gcc_except_table > /dev/null; then
3992 gcc_cv_ld_eh_gc_sections=yes
3998 rm -f conftest.s conftest.o conftest
4002 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4003 gcc_cv_ld_eh_gc_sections=no
4006 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4007 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4008 [Define if your linker supports garbage collection of
4009 sections in presence of EH frames.])
4011 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4017 AC_CACHE_CHECK(linker --as-needed support,
4018 gcc_cv_ld_as_needed,
4019 [gcc_cv_ld_as_needed=no
4020 if test $in_tree_ld = yes ; then
4021 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4022 && test $in_tree_ld_is_elf = yes; then
4023 gcc_cv_ld_as_needed=yes
4025 elif test x$gcc_cv_ld != x; then
4026 # Check if linker supports --as-needed and --no-as-needed options
4027 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4028 gcc_cv_ld_as_needed=yes
4032 if test x"$gcc_cv_ld_as_needed" = xyes; then
4033 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4034 [Define if your linker supports --as-needed and --no-as-needed options.])
4037 case "$target:$tm_file" in
4038 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4039 AC_CACHE_CHECK(linker support for omitting dot symbols,
4040 gcc_cv_ld_no_dot_syms,
4041 [gcc_cv_ld_no_dot_syms=no
4042 if test $in_tree_ld = yes ; then
4043 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4044 gcc_cv_ld_no_dot_syms=yes
4046 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4047 cat > conftest1.s <<EOF
4051 cat > conftest2.s <<EOF
4052 .section ".opd","aw"
4057 .quad .LEfoo,.TOC.@tocbase,0
4063 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4064 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4065 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4066 gcc_cv_ld_no_dot_syms=yes
4068 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4071 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4072 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4073 [Define if your PowerPC64 linker only needs function descriptor syms.])
4076 AC_CACHE_CHECK(linker large toc support,
4077 gcc_cv_ld_large_toc,
4078 [gcc_cv_ld_large_toc=no
4079 if test $in_tree_ld = yes ; then
4080 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4081 gcc_cv_ld_large_toc=yes
4083 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4084 cat > conftest.s <<EOF
4085 .section ".tbss","awT",@nobits
4091 addis 9,13,ie0@got@tprel@ha
4092 ld 9,ie0@got@tprel@l(9)
4094 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4095 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4096 gcc_cv_ld_large_toc=yes
4098 rm -f conftest conftest.o conftest.s
4101 if test x"$gcc_cv_ld_large_toc" = xyes; then
4102 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4103 [Define if your PowerPC64 linker supports a large TOC.])
4108 AC_CACHE_CHECK(linker --build-id support,
4110 [gcc_cv_ld_buildid=no
4111 if test $in_tree_ld = yes ; then
4112 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4113 "$gcc_cv_gld_minor_version" -ge 18 -o \
4114 "$gcc_cv_gld_major_version" -gt 2 \
4115 && test $in_tree_ld_is_elf = yes; then
4116 gcc_cv_ld_buildid=yes
4118 elif test x$gcc_cv_ld != x; then
4119 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4120 gcc_cv_ld_buildid=yes
4123 if test x"$gcc_cv_ld_buildid" = xyes; then
4124 AC_DEFINE(HAVE_LD_BUILDID, 1,
4125 [Define if your linker supports --build-id.])
4128 AC_ARG_ENABLE(linker-build-id,
4129 [ --enable-linker-build-id
4130 compiler will always pass --build-id to linker],
4132 enable_linker_build_id=no)
4134 if test x"$enable_linker_build_id" = xyes; then
4135 if test x"$gcc_cv_ld_buildid" = xyes; then
4136 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4137 [Define if gcc should always pass --build-id to linker.])
4139 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4143 # In binutils 2.21, GNU ld gained support for new emulations fully
4144 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4145 AC_CACHE_CHECK(linker *_sol2 emulation support,
4146 gcc_cv_ld_sol2_emulation,
4147 [gcc_cv_ld_sol2_emulation=no
4148 if test $in_tree_ld = yes ; then
4149 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4150 "$gcc_cv_gld_minor_version" -ge 21 -o \
4151 "$gcc_cv_gld_major_version" -gt 2 \
4152 && test $in_tree_ld_is_elf = yes; then
4153 gcc_cv_ld_sol2_emulation=yes
4155 elif test x$gcc_cv_ld != x; then
4156 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4157 grep _sol2 > /dev/null; then
4158 gcc_cv_ld_sol2_emulation=yes
4161 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4162 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4163 [Define if your linker supports the *_sol2 emulations.])
4166 AC_CACHE_CHECK(linker --sysroot support,
4168 [gcc_cv_ld_sysroot=no
4169 if test $in_tree_ld = yes ; then
4170 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4171 gcc_cv_ld_sysroot=yes
4173 elif test x$gcc_cv_ld != x; then
4174 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4175 gcc_cv_ld_sysroot=yes
4178 if test x"$gcc_cv_ld_sysroot" = xyes; then
4179 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4180 [Define if your linker supports --sysroot.])
4183 if test x$with_sysroot = x && test x$host = x$target \
4184 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4185 && test "$prefix" != "NONE"; then
4186 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4187 [Define to PREFIX/include if cpp should also search that directory.])
4190 # Test for stack protector support in target C library.
4191 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4192 gcc_cv_libc_provides_ssp,
4193 [gcc_cv_libc_provides_ssp=no
4195 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4196 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4197 if test "x$with_headers" != x; then
4198 glibc_header_dir=$with_headers
4199 elif test "x$with_sysroot" = x; then
4200 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4201 elif test "x$with_build_sysroot" != "x"; then
4202 glibc_header_dir="${with_build_sysroot}/usr/include"
4203 elif test "x$with_sysroot" = xyes; then
4204 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4206 glibc_header_dir="${with_sysroot}/usr/include"
4209 glibc_header_dir=/usr/include
4211 [# glibc 2.4 and later provides __stack_chk_fail and
4212 # either __stack_chk_guard, or TLS access to stack guard canary.
4213 if test -f $glibc_header_dir/features.h \
4214 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4215 $glibc_header_dir/features.h > /dev/null; then
4216 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4217 $glibc_header_dir/features.h > /dev/null; then
4218 gcc_cv_libc_provides_ssp=yes
4219 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4220 $glibc_header_dir/features.h > /dev/null \
4221 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4222 $glibc_header_dir/features.h > /dev/null; then
4223 gcc_cv_libc_provides_ssp=yes
4224 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4225 $glibc_header_dir/features.h > /dev/null && \
4226 test -f $glibc_header_dir/bits/uClibc_config.h && \
4227 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4228 $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
4229 gcc_cv_libc_provides_ssp=yes
4234 # Avoid complicated tests (see
4235 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4236 # simply assert that glibc does provide this, which is true for all
4237 # realistically usable GNU/Hurd configurations.
4238 gcc_cv_libc_provides_ssp=yes;;
4239 *-*-darwin* | *-*-freebsd*)
4240 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4241 [echo "no __stack_chk_fail on this target"])
4243 *) gcc_cv_libc_provides_ssp=no ;;
4246 if test x$gcc_cv_libc_provides_ssp = xyes; then
4247 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4248 [Define if your target C library provides stack protector support])
4251 # Check if TFmode long double should be used by default or not.
4252 # Some glibc targets used DFmode long double, but with glibc 2.4
4253 # and later they can use TFmode.
4255 powerpc*-*-linux* | \
4260 AC_ARG_WITH(long-double-128,
4261 [ --with-long-double-128 Use 128-bit long double by default.],
4262 gcc_cv_target_ldbl128="$with_long_double_128",
4263 [[gcc_cv_target_ldbl128=no
4264 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4265 if test "x$with_sysroot" = x; then
4266 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4267 elif test "x$with_build_sysroot" != "x"; then
4268 glibc_header_dir="${with_build_sysroot}/usr/include"
4269 elif test "x$with_sysroot" = xyes; then
4270 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4272 glibc_header_dir="${with_sysroot}/usr/include"
4275 glibc_header_dir=/usr/include
4277 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4278 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4279 && gcc_cv_target_ldbl128=yes
4283 if test x$gcc_cv_target_ldbl128 = xyes; then
4284 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4285 [Define if TFmode long double should be the default])
4288 # Find out what GC implementation we want, or may, use.
4290 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4298 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4301 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4306 echo "Using $GGC for garbage collection."
4308 # Libraries to use on the host. This will normally be set by the top
4309 # level Makefile. Here we simply capture the value for our Makefile.
4310 if test -z "${HOST_LIBS+set}"; then
4315 # Use the system's zlib library.
4317 zlibinc="-I\$(srcdir)/../zlib"
4318 AC_ARG_WITH(system-zlib,
4319 [ --with-system-zlib use installed libz],
4326 dnl Very limited version of automake's enable-maintainer-mode
4328 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4329 dnl maintainer-mode is disabled by default
4330 AC_ARG_ENABLE(maintainer-mode,
4331 [ --enable-maintainer-mode
4332 enable make rules and dependencies not useful
4333 (and sometimes confusing) to the casual installer],
4334 maintainer_mode=$enableval,
4337 AC_MSG_RESULT($maintainer_mode)
4339 if test "$maintainer_mode" = "yes"; then
4350 # Make empty files to contain the specs and options for each language.
4351 # Then add #include lines to for a compiler that has specs and/or options.
4357 # These (without "all_") are set in each config-lang.in.
4358 # `language' must be a single word so is spelled singularly.
4361 all_outputs='Makefile'
4362 # List of language makefile fragments.
4364 # Additional files for gengtype
4365 all_gtfiles="$target_gtfiles"
4367 # These are the languages that are set in --enable-languages,
4368 # and are available in the GCC tree.
4369 all_selected_languages=
4371 # Add the language fragments.
4372 # Languages are added via two mechanisms. Some information must be
4373 # recorded in makefile variables, these are defined in config-lang.in.
4374 # We accumulate them and plug them into the main Makefile.
4375 # The other mechanism is a set of hooks for each of the main targets
4376 # like `clean', `install', etc.
4378 language_hooks="Make-hooks"
4380 for lang in ${srcdir}/*/config-lang.in
4383 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4385 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4386 if test "x$lang_alias" = x
4388 echo "$lang doesn't set \$language." 1>&2
4391 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4392 subdirs="$subdirs $subdir"
4394 # $gcc_subdir is where the gcc integration files are to be found
4395 # for a language, both for internal compiler purposes (compiler
4396 # sources implementing front-end to GCC tree converters), and for
4397 # build infrastructure purposes (Make-lang.in, etc.)
4399 # This will be <subdir> (relative to $srcdir) if a line like
4400 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4401 # is found in <langdir>/config-lang.in, and will remain <langdir>
4404 # Except for the language alias (fetched above), the regular
4405 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4406 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4407 # only this and the language alias.
4409 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4410 if [ "$gcc_subdir" = "" ]; then
4411 gcc_subdir="$subdir"
4414 case ",$enable_languages," in
4416 all_selected_languages="$all_selected_languages $lang_alias"
4417 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4418 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4430 . ${srcdir}/$gcc_subdir/config-lang.in
4431 if test "x$language" = x
4433 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4438 case ",$enable_languages," in
4441 for i in $subdir_requires; do
4442 test -f "${srcdir}/$i/config-lang.in" && continue
4450 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4451 if test -f $srcdir/$gcc_subdir/lang.opt; then
4452 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4454 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4455 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4457 all_languages="$all_languages $language"
4458 all_compilers="$all_compilers $compilers"
4459 all_outputs="$all_outputs $outputs"
4460 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4461 case ",$enable_languages," in
4463 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4465 AC_SUBST(enable_lto)
4466 # LTO needs to speak the platform's object file format, and has a
4467 # number of implementations of the required binary file access APIs.
4468 # ELF is the most common, and default. We only link libelf if ELF
4469 # is indeed the selected format.
4470 LTO_BINARY_READER=${lto_binary_reader}
4471 LTO_USE_LIBELF=-lelf
4472 if test "x$lto_binary_reader" != "xlto-elf" ; then
4475 AC_SUBST(LTO_BINARY_READER)
4476 AC_SUBST(LTO_USE_LIBELF)
4482 # Pick up gtfiles for c
4484 . ${srcdir}/c-config-lang.in
4485 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4488 for language in $all_selected_languages
4490 check_languages="$check_languages check-$language"
4493 # We link each language in with a set of hooks, reached indirectly via
4494 # lang.${target}. Only do so for selected languages.
4498 target_list="all.cross start.encap rest.encap tags \
4499 install-common install-man install-info install-pdf install-html dvi \
4500 pdf html uninstall info man srcextra srcman srcinfo \
4501 mostlyclean clean distclean maintainer-clean install-plugin"
4503 for t in $target_list
4506 for lang in $all_selected_languages
4510 echo "lang.$t: $x" >> Make-hooks
4519 echo "dir ." > .gdbinit
4520 echo "dir ${srcdir}" >> .gdbinit
4521 if test x$gdb_needs_out_file_path = xyes
4523 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4525 if test "x$subdirs" != x; then
4528 echo "dir ${srcdir}/$s" >> .gdbinit
4531 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4533 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4534 AC_SUBST(gcc_tooldir)
4537 # Find a directory in which to install a shared libgcc.
4539 AC_ARG_ENABLE(version-specific-runtime-libs,
4540 [ --enable-version-specific-runtime-libs
4541 specify that runtime libraries should be
4542 installed in a compiler-specific directory])
4544 AC_ARG_WITH(slibdir,
4545 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4546 slibdir="$with_slibdir",
4547 if test "${enable_version_specific_runtime_libs+set}" = set; then
4548 slibdir='$(libsubdir)'
4549 elif test "$host" != "$target"; then
4550 slibdir='$(build_tooldir)/lib'
4556 # Substitute configuration variables
4559 AC_SUBST(all_compilers)
4560 AC_SUBST(all_gtfiles)
4561 AC_SUBST(all_lang_makefrags)
4562 AC_SUBST(all_languages)
4563 AC_SUBST(all_selected_languages)
4564 AC_SUBST(build_exeext)
4565 AC_SUBST(build_install_headers_dir)
4566 AC_SUBST(build_xm_file_list)
4567 AC_SUBST(build_xm_include_list)
4568 AC_SUBST(build_xm_defines)
4569 AC_SUBST(build_file_translate)
4570 AC_SUBST(check_languages)
4571 AC_SUBST(cpp_install_dir)
4572 AC_SUBST(xmake_file)
4573 AC_SUBST(tmake_file)
4574 AC_SUBST(TM_ENDIAN_CONFIG)
4575 AC_SUBST(TM_MULTILIB_CONFIG)
4576 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4577 AC_SUBST(extra_gcc_objs)
4578 AC_SUBST(user_headers_inc_next_pre)
4579 AC_SUBST(user_headers_inc_next_post)
4580 AC_SUBST(extra_headers_list)
4581 AC_SUBST(extra_objs)
4582 AC_SUBST(extra_parts)
4583 AC_SUBST(extra_passes)
4584 AC_SUBST(extra_programs)
4585 AC_SUBST(float_h_file)
4586 AC_SUBST(gcc_config_arguments)
4587 AC_SUBST(gcc_gxx_include_dir)
4588 AC_SUBST(host_exeext)
4589 AC_SUBST(host_xm_file_list)
4590 AC_SUBST(host_xm_include_list)
4591 AC_SUBST(host_xm_defines)
4592 AC_SUBST(out_host_hook_obj)
4594 AC_SUBST(lang_opt_files)
4595 AC_SUBST(lang_specs_files)
4596 AC_SUBST(lang_tree_files)
4597 AC_SUBST(local_prefix)
4599 AC_SUBST(objc_boehm_gc)
4601 AC_SUBST(out_object_file)
4602 AC_SUBST(thread_file)
4603 AC_SUBST(tm_file_list)
4604 AC_SUBST(tm_include_list)
4605 AC_SUBST(tm_defines)
4606 AC_SUBST(tm_p_file_list)
4607 AC_SUBST(tm_p_include_list)
4608 AC_SUBST(xm_file_list)
4609 AC_SUBST(xm_include_list)
4610 AC_SUBST(xm_defines)
4611 AC_SUBST(use_gcc_stdint)
4612 AC_SUBST(c_target_objs)
4613 AC_SUBST(cxx_target_objs)
4614 AC_SUBST(fortran_target_objs)
4615 AC_SUBST(target_cpu_default)
4617 AC_SUBST_FILE(language_hooks)
4620 if test x${build} = x${host} ; then
4621 if test x${host} = x${target} ; then
4622 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4624 echo "Links are now set up to build a cross-compiler" 1>&2
4625 echo " from ${host} to ${target}." 1>&2
4628 if test x${host} = x${target} ; then
4629 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4630 echo " for ${target}." 1>&2
4632 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4633 echo " from ${host} to ${target}." 1>&2
4637 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4638 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4640 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4641 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4643 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4644 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4645 if test "x${CLOOGLIBS}" != "x" ; then
4646 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4649 AC_ARG_VAR(LIBELFLIBS,[How to link libelf])
4650 AC_ARG_VAR(LIBELFINC,[How to find libelf include files])
4651 if test "x${LIBELFLIBS}" != "x" ; then
4652 AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.])
4655 # Check for plugin support
4656 AC_ARG_ENABLE(plugin,
4657 [ --enable-plugin enable plugin support],
4658 enable_plugin=$enableval,
4659 enable_plugin=yes; default_plugin=yes)
4665 if test x$build = x$host; then
4666 export_sym_check="nm${exeext} -g"
4667 elif test x$host = x$target; then
4668 export_sym_check="$gcc_cv_nm -g"
4674 if test x$build = x$host; then
4675 export_sym_check="objdump${exeext} -T"
4676 elif test x$host = x$target; then
4677 export_sym_check="$gcc_cv_objdump -T"
4684 if test x"$enable_plugin" = x"yes"; then
4686 AC_MSG_CHECKING([for exported symbols])
4687 if test "x$export_sym_check" != x; then
4688 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4689 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4690 if $export_sym_check conftest | grep foobar > /dev/null; then
4691 : # No need to use a flag
4692 AC_MSG_RESULT([yes])
4694 AC_MSG_RESULT([yes])
4695 AC_MSG_CHECKING([for -rdynamic])
4696 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4697 if $export_sym_check conftest | grep foobar > /dev/null; then
4699 pluginlibs="-rdynamic"
4704 AC_MSG_RESULT([$plugin_rdynamic])
4707 AC_MSG_RESULT([unable to check])
4712 AC_SEARCH_LIBS([dlopen], [dl])
4713 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4714 pluginlibs="$pluginlibs -ldl"
4718 # Check that we can build shared objects with -fPIC -shared
4719 saved_LDFLAGS="$LDFLAGS"
4722 LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup"
4725 LDFLAGS="$LDFLAGS -fPIC -shared"
4728 AC_MSG_CHECKING([for -fPIC -shared])
4730 [extern int X;],[return X == 0;],
4731 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4732 [AC_MSG_RESULT([no]); have_pic_shared=no])
4733 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4737 LDFLAGS="$saved_LDFLAGS"
4739 # If plugin support had been requested but not available, fail.
4740 if test x"$enable_plugin" = x"no" ; then
4741 if test x"$default_plugin" != x"yes"; then
4743 Building GCC with plugin support requires a host that supports
4744 -fPIC, -shared, -ldl and -rdynamic.])
4749 AC_SUBST(pluginlibs)
4750 AC_SUBST(enable_plugin)
4751 if test x"$enable_plugin" = x"yes"; then
4752 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4755 # Configure the subdirectories
4756 # AC_CONFIG_SUBDIRS($subdirs)
4758 # Create the Makefile
4759 # and configure language subdirectories
4760 AC_CONFIG_FILES($all_outputs)
4762 AC_CONFIG_COMMANDS([default],
4764 case ${CONFIG_HEADERS} in
4765 *auto-host.h:config.in*)
4768 # Make sure all the subdirs exist.
4769 for d in $subdirs doc build c-family
4771 test -d $d || mkdir $d
4774 [subdirs='$subdirs'])