2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011, 2012 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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 gcc_gxx_include_dir_add_sysroot=0
149 if test "${with_sysroot+set}" = set; then
150 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
151 if test "${gcc_gxx_without_sysroot}"; then
152 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
153 gcc_gxx_include_dir_add_sysroot=1
157 # XXX: FIXME: We have a discrepancy: G++ header files are installed
158 # relative to PREFIX but newlib header files are installed relative
159 # to EXEC_PREFIX. For now we define gcc_c_include_dir to allow for
160 # this behaviour, but really newlib should be changed (which will
161 # involve changing the top level configure and makefile to pass down
162 # a new variable containing the path for installing headers). When
163 # this is done this patch can be reverted and TOOL_INCLUDE_DIR in
164 # gcc/Makefile.in can be restored to its original definition based
166 gcc_c_include_dir='include'
167 if test x$host != x$target; then
168 gcc_c_include_dir="$target_alias/$gcc_c_include_dir"
170 gcc_c_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)\$(prefix_to_exec_prefix)$gcc_c_include_dir"
172 AC_ARG_WITH(cpp_install_dir,
173 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
174 [install the user visible C preprocessor in DIR
175 (relative to PREFIX) as well as PREFIX/bin])],
176 [if test x$withval = xyes; then
177 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
178 elif test x$withval != xno; then
179 cpp_install_dir=$withval
182 # We would like to our source tree to be readonly. However when releases or
183 # pre-releases are generated, the flex/bison generated files as well as the
184 # various formats of manuals need to be included along with the rest of the
185 # sources. Therefore we have --enable-generated-files-in-srcdir to do
188 AC_MSG_CHECKING([whether to place generated files in the source directory])
189 dnl generated-files-in-srcdir is disabled by default
190 AC_ARG_ENABLE(generated-files-in-srcdir,
191 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
192 [put copies of generated files in source dir
193 intended for creating source tarballs for users
194 without texinfo bison or flex])],
195 generated_files_in_srcdir=$enableval,
196 generated_files_in_srcdir=no)
198 AC_MSG_RESULT($generated_files_in_srcdir)
200 if test "$generated_files_in_srcdir" = "yes"; then
207 # -------------------
208 # Find default linker
209 # -------------------
213 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
214 gnu_ld_flag="$with_gnu_ld",
217 # With pre-defined ld
219 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
220 DEFAULT_LINKER="$with_ld")
221 if test x"${DEFAULT_LINKER+set}" = x"set"; then
222 if test ! -x "$DEFAULT_LINKER"; then
223 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
224 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
227 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
228 [Define to enable the use of a default linker.])
231 AC_MSG_CHECKING([whether a default linker was specified])
232 if test x"${DEFAULT_LINKER+set}" = x"set"; then
233 if test x"$gnu_ld_flag" = x"no"; then
234 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
236 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
242 # With demangler in GNU ld
243 AC_ARG_WITH(demangler-in-ld,
244 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
245 demangler_in_ld="$with_demangler_in_ld",
248 # ----------------------
249 # Find default assembler
250 # ----------------------
254 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
255 gas_flag="$with_gnu_as",
259 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
260 DEFAULT_ASSEMBLER="$with_as")
261 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
262 if test ! -x "$DEFAULT_ASSEMBLER"; then
263 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
264 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
267 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
268 [Define to enable the use of a default assembler.])
271 AC_MSG_CHECKING([whether a default assembler was specified])
272 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
273 if test x"$gas_flag" = x"no"; then
274 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
276 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
286 # If a non-executable a.out is present (e.g. created by GNU as above even if
287 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
288 # file, even when creating an executable, so an execution test fails.
289 # Remove possible default executable files to avoid this.
291 # FIXME: This really belongs into AC_PROG_CC and can be removed once
292 # Autoconf includes it.
293 rm -f a.out a.exe b.out
295 # Find the native compiler
299 ACX_PROG_GNAT([-I"$srcdir"/ada])
301 # autoconf is lame and doesn't give us any substitution variable for this.
302 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
303 NO_MINUS_C_MINUS_O=yes
305 OUTPUT_OPTION='-o $@'
307 AC_SUBST(NO_MINUS_C_MINUS_O)
308 AC_SUBST(OUTPUT_OPTION)
310 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
311 # optimizations to be activated explicitly by the toplevel.
314 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
318 # Determine PICFLAG for target gnatlib.
319 GCC_PICFLAG_FOR_TARGET
320 AC_SUBST(PICFLAG_FOR_TARGET)
322 # -------------------------
323 # Check C compiler features
324 # -------------------------
326 AC_USE_SYSTEM_EXTENSIONS
332 # sizeof(char) is 1 by definition.
333 AC_CHECK_SIZEOF(void *)
334 AC_CHECK_SIZEOF(short)
336 AC_CHECK_SIZEOF(long)
337 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
338 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
341 # ---------------------
342 # Warnings and checking
343 # ---------------------
345 # Check $CC warning features (if it's GCC).
346 # We want to use -pedantic, but we don't want warnings about
350 # * C++11 narrowing conversions in { }
351 # So, we only use -pedantic if we can disable those warnings.
353 ACX_PROG_CC_WARNING_OPTS(
354 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
355 ACX_PROG_CC_WARNING_OPTS(
356 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
358 ACX_PROG_CC_WARNING_OPTS(
359 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
360 ACX_PROG_CC_WARNING_OPTS(
361 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
362 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
363 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
364 [-Wno-overlength-strings])), [strict_warn])
365 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
367 # The above macros do nothing if the compiler is not GCC. However, the
368 # Makefile has more goo to add other flags, so these variables are used
369 # to enable warnings only for GCC.
372 if test "x$GCC" = "xyes"; then
373 warn_cflags='$(GCC_WARN_CFLAGS)'
374 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
376 AC_SUBST(warn_cflags)
377 AC_SUBST(warn_cxxflags)
379 # Disable exceptions and RTTI if building with g++
380 ACX_PROG_CC_WARNING_OPTS(
381 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
383 # Enable expensive internal checks
385 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
389 AC_ARG_ENABLE(checking,
390 [AS_HELP_STRING([[--enable-checking[=LIST]]],
391 [enable expensive run-time checks. With LIST,
392 enable only specific categories of checks.
393 Categories are: yes,no,all,none,release.
394 Flags are: assert,df,fold,gc,gcac,gimple,misc,
395 rtlflag,rtl,runtime,tree,valgrind,types])],
396 [ac_checking_flags="${enableval}"],[
397 # Determine the default checks.
398 if test x$is_release = x ; then
399 ac_checking_flags=yes
401 ac_checking_flags=release
403 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
404 for check in release $ac_checking_flags
407 # these set all the flags to specific states
408 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
409 ac_fold_checking= ; ac_gc_checking=1 ;
410 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
411 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
412 ac_tree_checking=1 ; ac_valgrind_checking= ;
413 ac_types_checking=1 ;;
414 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
415 ac_fold_checking= ; ac_gc_checking= ;
416 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
417 ac_rtlflag_checking= ; ac_runtime_checking= ;
418 ac_tree_checking= ; ac_valgrind_checking= ;
419 ac_types_checking= ;;
420 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
421 ac_fold_checking=1 ; ac_gc_checking=1 ;
422 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
423 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
424 ac_tree_checking=1 ; ac_valgrind_checking= ;
425 ac_types_checking=1 ;;
426 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
427 ac_fold_checking= ; ac_gc_checking= ;
428 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
429 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
430 ac_tree_checking= ; ac_valgrind_checking= ;
431 ac_types_checking= ;;
432 # these enable particular checks
433 assert) ac_assert_checking=1 ;;
434 df) ac_df_checking=1 ;;
435 fold) ac_fold_checking=1 ;;
436 gc) ac_gc_checking=1 ;;
437 gcac) ac_gc_always_collect=1 ;;
438 gimple) ac_gimple_checking=1 ;;
439 misc) ac_checking=1 ;;
440 rtl) ac_rtl_checking=1 ;;
441 rtlflag) ac_rtlflag_checking=1 ;;
442 runtime) ac_runtime_checking=1 ;;
443 tree) ac_tree_checking=1 ;;
444 types) ac_types_checking=1 ;;
445 valgrind) ac_valgrind_checking=1 ;;
446 *) AC_MSG_ERROR(unknown check category $check) ;;
452 if test x$ac_checking != x ; then
453 AC_DEFINE(ENABLE_CHECKING, 1,
454 [Define if you want more run-time sanity checks. This one gets a grab
455 bag of miscellaneous but relatively cheap checks.])
456 nocommon_flag=-fno-common
458 AC_SUBST(nocommon_flag)
459 if test x$ac_df_checking != x ; then
460 AC_DEFINE(ENABLE_DF_CHECKING, 1,
461 [Define if you want more run-time sanity checks for dataflow.])
463 if test x$ac_assert_checking != x ; then
464 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
465 [Define if you want assertions enabled. This is a cheap check.])
467 if test x$ac_gimple_checking != x ; then
468 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
469 [Define if you want operations on GIMPLE (the basic data structure of
470 the high-level optimizers) to be checked for dynamic type safety at
471 runtime. This is moderately expensive.])
473 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
474 if test x$ac_runtime_checking != x ; then
475 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
476 [Define if you want runtime assertions enabled. This is a cheap check.])
478 if test x$ac_tree_checking != x ; then
479 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
480 [Define if you want all operations on trees (the basic data
481 structure of the front ends) to be checked for dynamic type safety
482 at runtime. This is moderately expensive. The tree browser debugging
483 routines will also be enabled by this option.
485 TREEBROWSER=tree-browser.o
487 if test x$ac_types_checking != x ; then
488 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
489 [Define if you want all gimple types to be verified after gimplifiation.
493 AC_SUBST(TREEBROWSER)
494 if test x$ac_rtl_checking != x ; then
495 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
496 [Define if you want all operations on RTL (the basic data structure
497 of the optimizer and back end) to be checked for dynamic type safety
498 at runtime. This is quite expensive.])
500 if test x$ac_rtlflag_checking != x ; then
501 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
502 [Define if you want RTL flag accesses to be checked against the RTL
503 codes that are supported for each access macro. This is relatively
506 if test x$ac_gc_checking != x ; then
507 AC_DEFINE(ENABLE_GC_CHECKING, 1,
508 [Define if you want the garbage collector to do object poisoning and
509 other memory allocation checks. This is quite expensive.])
511 if test x$ac_gc_always_collect != x ; then
512 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
513 [Define if you want the garbage collector to operate in maximally
514 paranoid mode, validating the entire heap and collecting garbage at
515 every opportunity. This is extremely expensive.])
517 if test x$ac_fold_checking != x ; then
518 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
519 [Define if you want fold checked that it never destructs its argument.
520 This is quite expensive.])
522 valgrind_path_defines=
525 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
526 dnl # an if statement. This was the source of very frustrating bugs
527 dnl # in converting to autoconf 2.5x!
528 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
530 if test x$ac_valgrind_checking != x ; then
531 # It is certainly possible that there's valgrind but no valgrind.h.
532 # GCC relies on making annotations so we must have both.
533 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
534 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
535 [[#include <valgrind/memcheck.h>
536 #ifndef VALGRIND_DISCARD
537 #error VALGRIND_DISCARD not defined
539 [gcc_cv_header_valgrind_memcheck_h=yes],
540 [gcc_cv_header_valgrind_memcheck_h=no])
541 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
542 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
543 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
544 [[#include <memcheck.h>
545 #ifndef VALGRIND_DISCARD
546 #error VALGRIND_DISCARD not defined
548 [gcc_cv_header_memcheck_h=yes],
549 [gcc_cv_header_memcheck_h=no])
550 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
551 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
552 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
553 if test "x$valgrind_path" = "x" \
554 || (test $have_valgrind_h = no \
555 && test $gcc_cv_header_memcheck_h = no \
556 && test $gcc_cv_header_valgrind_memcheck_h = no); then
557 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
559 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
560 valgrind_command="$valgrind_path -q"
561 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
562 [Define if you want to run subprograms and generated programs
563 through valgrind (a memory checker). This is extremely expensive.])
564 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
565 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
566 [Define if valgrind's valgrind/memcheck.h header is installed.])
568 if test $gcc_cv_header_memcheck_h = yes; then
569 AC_DEFINE(HAVE_MEMCHECK_H, 1,
570 [Define if valgrind's memcheck.h header is installed.])
573 AC_SUBST(valgrind_path_defines)
574 AC_SUBST(valgrind_command)
576 # Enable code coverage collection
577 AC_ARG_ENABLE(coverage,
578 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
579 [enable compiler's code coverage collection.
580 Use to measure compiler performance and locate
581 unused parts of the compiler. With LEVEL, specify
582 optimization. Values are opt, noopt,
584 [case "${enableval}" in
586 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
589 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
592 # a.k.a. --disable-coverage
596 AC_MSG_ERROR(unknown coverage setting $enableval)
600 AC_SUBST(coverage_flags)
602 AC_ARG_ENABLE(gather-detailed-mem-stats,
603 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
604 [enable detailed memory allocation stats gathering])], [],
605 [enable_gather_detailed_mem_stats=no])
606 if test x$enable_gather_detailed_mem_stats = xyes ; then
607 AC_DEFINE(GATHER_STATISTICS, 1,
608 [Define to enable detailed memory allocation stats gathering.])
611 # -------------------------------
612 # Miscenalleous configure options
613 # -------------------------------
615 # See if we are building gcc with C++.
616 AC_ARG_ENABLE(build-with-cxx,
617 [AS_HELP_STRING([--enable-build-with-cxx],
618 [build with C++ compiler instead of C compiler])],
619 ENABLE_BUILD_WITH_CXX=$enableval,
620 ENABLE_BUILD_WITH_CXX=no)
621 AC_SUBST(ENABLE_BUILD_WITH_CXX)
622 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
623 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
624 [Define if building with C++.])
629 [AS_HELP_STRING([--with-stabs],
630 [arrange to use stabs instead of host debug format])],
634 # Determine whether or not multilibs are enabled.
635 AC_ARG_ENABLE(multilib,
636 [AS_HELP_STRING([--enable-multilib],
637 [enable library support for multiple ABIs])],
638 [], [enable_multilib=yes])
639 AC_SUBST(enable_multilib)
641 # Enable __cxa_atexit for C++.
642 AC_ARG_ENABLE(__cxa_atexit,
643 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
646 # Enable C extension for decimal float if target supports it.
647 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
649 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
650 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
651 [Define to 1 to enable decimal float extension to C.])
653 # Use default_decimal_float for dependency.
654 enable_decimal_float=$default_decimal_float
656 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
657 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
658 [Define to 1 to specify that we are using the BID decimal floating
659 point format instead of DPD])
661 # Enable C extension for fixed-point arithmetic.
662 AC_ARG_ENABLE(fixed-point,
663 [AS_HELP_STRING([--enable-fixed-point],
664 [enable fixed-point arithmetic extension to C])],
669 enable_fixed_point=yes
675 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
676 enable_fixed_point=no
679 enable_fixed_point=yes
684 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
685 enable_fixed_point=no
689 AC_SUBST(enable_fixed_point)
691 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
692 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
693 [Define to 1 to enable fixed-point arithmetic extension to C.])
696 # Pass with no value to take the default
697 # Pass with a value to specify a thread package
698 AC_ARG_ENABLE(threads,
699 [AS_HELP_STRING([[--enable-threads[=LIB]]],
700 [enable thread usage for target GCC,
701 using LIB thread package])],,
705 [AS_HELP_STRING([--enable-tls],
706 [enable or disable generation of tls code
707 overriding the assembler check for tls support])],
711 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
712 Valid choices are 'yes' and 'no'.]) ;;
716 AC_ARG_ENABLE(objc-gc,
717 [AS_HELP_STRING([--enable-objc-gc],
718 [enable the use of Boehm's garbage collector with
719 the GNU Objective-C runtime])],
720 if test x$enable_objc_gc = xno; then
728 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
729 dwarf2="$with_dwarf2",
732 AC_ARG_ENABLE(shared,
733 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
735 case $enable_shared in
739 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
740 for pkg in $enableval; do
741 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
748 ], [enable_shared=yes])
749 AC_SUBST(enable_shared)
751 AC_ARG_WITH([native-system-header-dir],
752 [ --with-native-system-header-dir=dir
753 use dir as the directory to look for standard
754 system header files in. Defaults to /usr/include.],
756 case ${with_native_system_header_dir} in
757 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
758 /* | [[A-Za-z]]:[[\\/]]*) ;;
759 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
761 configured_native_system_header_dir="${withval}"
762 ], [configured_native_system_header_dir=])
764 AC_ARG_WITH(build-sysroot,
765 [AS_HELP_STRING([--with-build-sysroot=sysroot],
766 [use sysroot as the system root during the build])],
767 [if test x"$withval" != x ; then
768 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
770 [SYSROOT_CFLAGS_FOR_TARGET=])
771 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
774 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
775 [search for usr/lib, usr/include, et al, within DIR])],
777 case ${with_sysroot} in
778 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
779 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
782 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
783 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
785 if test "x$prefix" = xNONE; then
786 test_prefix=/usr/local
790 if test "x$exec_prefix" = xNONE; then
791 test_exec_prefix=$test_prefix
793 test_exec_prefix=$exec_prefix
795 case ${TARGET_SYSTEM_ROOT} in
796 "${test_prefix}"|"${test_prefix}/"*|\
797 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
798 '${prefix}'|'${prefix}/'*|\
799 '${exec_prefix}'|'${exec_prefix}/'*)
800 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
801 TARGET_SYSTEM_ROOT_DEFINE="$t"
806 TARGET_SYSTEM_ROOT_DEFINE=
807 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
809 AC_SUBST(TARGET_SYSTEM_ROOT)
810 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
811 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
814 [AS_HELP_STRING([--with-specs=SPECS],
815 [add SPECS to driver command-line processing])],
816 [CONFIGURE_SPECS=$withval],
819 AC_SUBST(CONFIGURE_SPECS)
821 ACX_PKGVERSION([GCC])
822 ACX_BUGURL([https://enterprise.redhat.com/gnupro/])
824 # Sanity check enable_languages in case someone does not run the toplevel
825 # configure # script.
826 AC_ARG_ENABLE(languages,
827 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
828 [case ,${enable_languages}, in
830 # go safe -- we cannot be much sure without the toplevel
832 # analysis of which target libs are present and usable
836 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
841 enable_languages=c,${enable_languages}
844 [enable_languages=c])
846 AC_ARG_WITH(multilib-list,
847 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
849 with_multilib_list=default)
851 # -------------------------
852 # Checks for other programs
853 # -------------------------
857 # Find some useful tools
859 # We need awk to create options.c and options.h.
860 # Bail out if it's missing.
862 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
869 AC_SUBST(ranlib_flags)
873 # See if cmp has --ignore-initial.
874 gcc_AC_PROG_CMP_IGNORE_INITIAL
876 # See if we have the mktemp command.
877 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
879 # See if makeinfo has been installed and is modern enough
880 # that we can use it.
881 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
882 [GNU texinfo.* \([0-9][0-9.]*\)],
883 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
884 if test $gcc_cv_prog_makeinfo_modern = no; then
886 *** Makeinfo is missing or too old.
887 *** Info documentation will not be built.])
894 # Is pod2man recent enough to regenerate manpages?
895 AC_MSG_CHECKING([for recent Pod::Man])
896 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
898 GENERATED_MANPAGES=generated-manpages
903 AC_SUBST(GENERATED_MANPAGES)
905 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
908 dnl Don't use AC_PROG_LEX; we insist on flex.
909 dnl LEXLIB is not useful in gcc.
910 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
913 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
915 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
916 # check for build == host before using them.
919 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
920 && test -d ../binutils ; then
921 NM='${objdir}/../binutils/nm-new'
923 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
927 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
928 && test -d ../binutils ; then
929 AR='${objdir}/../binutils/ar'
931 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
935 # --------------------
936 # Checks for C headers
937 # --------------------
939 # Need to reject headers which give warnings, so that the -Werror bootstrap
940 # works later. *sigh* This needs to come before all header checks.
947 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
948 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
949 sys/resource.h sys/param.h sys/times.h sys/stat.h \
950 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
952 # Check for thread headers.
953 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
954 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
956 # These tests can't be done till we know if we have limits.h.
960 # ----------------------
961 # Checks for C++ headers
962 # ----------------------
964 dnl Autoconf will give an error in the configure script if there is no
965 dnl C++ preprocessor. Hack to prevent that.
966 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
968 m4_popdef([AC_MSG_ERROR])[]dnl
972 AC_CHECK_HEADERS(unordered_map)
973 AC_CHECK_HEADERS(tr1/unordered_map)
974 AC_CHECK_HEADERS(ext/hash_map)
983 # These libraries may be used by collect2.
984 # We may need a special search path to get them linked.
985 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
987 for libs in '' -lld -lmld \
988 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
989 '-L/usr/lib/cmplrs/cc3.11 -lmld'
992 AC_TRY_LINK_FUNC(ldopen,
993 [gcc_cv_collect2_libs="$libs"; break])
996 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
997 case $gcc_cv_collect2_libs in
999 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1001 AC_SUBST(COLLECT2_LIBS)
1003 # When building Ada code on Alpha, we need exc_resume which is usually in
1004 # -lexc. So test for it.
1007 AC_SEARCH_LIBS(exc_resume, exc)
1010 AC_SUBST(GNAT_LIBEXC)
1012 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1015 AC_SEARCH_LIBS(kstat_open, kstat)
1016 EXTRA_GCC_LIBS="$LIBS"
1018 AC_SUBST(EXTRA_GCC_LIBS)
1020 # Some systems put ldexp and frexp in libm instead of libc; assume
1021 # they're both in the same place. jcf-dump needs them.
1024 AC_SEARCH_LIBS(ldexp, m)
1029 # Use <inttypes.h> only if it exists,
1030 # doesn't clash with <sys/types.h>, and declares intmax_t.
1031 AC_MSG_CHECKING(for inttypes.h)
1032 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1033 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1034 [[#include <sys/types.h>
1035 #include <inttypes.h>]],
1036 [[intmax_t i = -1;]])],
1037 [gcc_cv_header_inttypes_h=yes],
1038 [gcc_cv_header_inttypes_h=no])])
1039 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1040 if test $gcc_cv_header_inttypes_h = yes; then
1041 AC_DEFINE(HAVE_INTTYPES_H, 1,
1042 [Define if you have a working <inttypes.h> header file.])
1045 dnl Disabled until we have a complete test for buggy enum bitfields.
1046 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1048 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1049 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1050 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1051 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1052 putchar_unlocked putc_unlocked)
1053 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1054 sysconf strsignal getrusage nl_langinfo \
1055 gettimeofday mbstowcs wcswidth mmap setlocale \
1056 gcc_UNLOCKED_FUNCS madvise)
1058 if test x$ac_cv_func_mbstowcs = xyes; then
1059 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1060 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1066 [gcc_cv_func_mbstowcs_works=yes],
1067 [gcc_cv_func_mbstowcs_works=no],
1068 [gcc_cv_func_mbstowcs_works=yes])])
1069 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1070 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1071 [Define this macro if mbstowcs does not crash when its
1072 first argument is NULL.])
1076 AC_CHECK_TYPE(ssize_t, int)
1077 AC_CHECK_TYPE(caddr_t, char *)
1079 gcc_AC_FUNC_MMAP_BLACKLIST
1083 # Under VMS, vfork works very differently than on Unix. The standard test
1084 # won't work, and it isn't easily adaptable. It makes more sense to
1086 ac_cv_func_vfork_works=yes
1091 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1092 # iconv() prototype.
1093 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1094 [AC_LANG_PUSH([C++])
1096 AC_LANG_POP([C++])],
1099 # Until we have in-tree GNU iconv:
1101 AC_SUBST(LIBICONV_DEP)
1107 # We will need to find libiberty.h and ansidecl.h
1108 saved_CFLAGS="$CFLAGS"
1109 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1110 saved_CXXFLAGS="$CXXFLAGS"
1111 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1112 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1113 strsignal strstr stpcpy strverscmp \
1114 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1115 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1116 #include "ansidecl.h"
1117 #include "system.h"])
1119 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1120 #include "ansidecl.h"
1122 #ifdef HAVE_SYS_RESOURCE_H
1123 #include <sys/resource.h>
1127 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1128 #include "ansidecl.h"
1130 #ifdef HAVE_SYS_RESOURCE_H
1131 #include <sys/resource.h>
1133 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1134 [Define to `long' if <sys/resource.h> doesn't define.])])
1136 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1137 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1138 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1139 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1140 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1141 #include "ansidecl.h"
1150 gcc_AC_CHECK_DECLS(times, , ,[
1151 #include "ansidecl.h"
1153 #ifdef HAVE_SYS_TIMES_H
1154 #include <sys/times.h>
1158 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1159 #include "ansidecl.h"
1164 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1166 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1167 [AC_LANG_PUSH([C++])
1168 gcc_AC_CHECK_DECLS(madvise, , ,[
1169 #include "ansidecl.h"
1172 AC_LANG_POP([C++])],
1173 [gcc_AC_CHECK_DECLS(madvise, , ,[
1174 #include "ansidecl.h"
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190 [Define if <sys/times.h> defines struct tms.])
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201 AC_DEFINE(HAVE_CLOCK_T, 1,
1202 [Define if <time.h> defines clock_t.])
1205 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1206 CFLAGS="$saved_CFLAGS"
1207 CXXFLAGS="$saved_CXXFLAGS"
1209 # mkdir takes a single argument on some systems.
1210 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1218 # With Setjmp/Longjmp based exception handling.
1219 AC_ARG_ENABLE(sjlj-exceptions,
1220 [AS_HELP_STRING([--enable-sjlj-exceptions],
1221 [arrange to use setjmp/longjmp exception handling])],
1224 if test $enableval != yes; then
1225 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1230 force_sjlj_exceptions=yes],
1233 force_sjlj_exceptions=yes
1236 # On the FRV the unwinding of exceptions is not handled
1237 # correctly at the moment so use setjmp/longjmp instead.
1239 force_sjlj_exceptions=yes
1243 force_sjlj_exceptions=yes
1247 force_sjlj_exceptions=no
1250 if test $force_sjlj_exceptions = yes; then
1251 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1252 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1253 [Define 0/1 to force the choice for exception handling model.])
1256 # --------------------------------------------------------
1257 # Build, host, and target specific configuration fragments
1258 # --------------------------------------------------------
1260 # Collect build-machine-specific information.
1261 . ${srcdir}/config.build
1263 # Collect host-machine-specific information.
1264 . ${srcdir}/config.host
1268 # Collect target-machine-specific information.
1269 . ${srcdir}/config.gcc
1271 extra_objs="${host_extra_objs} ${extra_objs}"
1272 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1274 # Default the target-machine variables that were not explicitly set.
1275 if test x"$tm_file" = x
1276 then tm_file=$cpu_type/$cpu_type.h; fi
1278 if test x"$extra_headers" = x
1279 then extra_headers=; fi
1281 if test x$md_file = x
1282 then md_file=$cpu_type/$cpu_type.md; fi
1284 if test x$out_file = x
1285 then out_file=$cpu_type/$cpu_type.c; fi
1287 if test x"$tmake_file" = x
1288 then tmake_file=$cpu_type/t-$cpu_type
1291 # Support --enable-initfini-array.
1292 if test x$enable_initfini_array != xno; then
1293 tm_file="${tm_file} initfini-array.h"
1296 if test x"$dwarf2" = xyes
1297 then tm_file="$tm_file tm-dwarf2.h"
1300 # Say what files are being used for the output code and MD file.
1301 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1302 echo "Using \`$srcdir/config/$md_file' as machine description file."
1304 # If any of the xm_file variables contain nonexistent files, warn
1305 # about them and drop them.
1308 for x in $build_xm_file; do
1309 if test -f $srcdir/config/$x
1311 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1317 for x in $host_xm_file; do
1318 if test -f $srcdir/config/$x
1320 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1326 for x in $xm_file; do
1327 if test -f $srcdir/config/$x
1329 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1335 for f in $tm_file; do
1338 if test $count = ax; then
1339 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1341 echo "Using the following target machine macro files:"
1342 for f in $tm_file; do
1343 echo " $srcdir/config/$f"
1347 if test x$need_64bit_hwint = xyes; then
1348 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1349 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1352 if test x$use_long_long_for_widest_fast_int = xyes; then
1353 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1354 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1355 efficiently supported by the host hardware.])
1358 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1359 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1361 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1362 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1365 for f in $host_xm_file; do
1368 if test $count = a; then
1370 elif test $count = ax; then
1371 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1373 echo "Using the following host machine macro files:"
1374 for f in $host_xm_file; do
1375 echo " $srcdir/config/$f"
1378 echo "Using ${out_host_hook_obj} for host machine hooks."
1380 if test "$host_xm_file" != "$build_xm_file"; then
1382 for f in $build_xm_file; do
1385 if test $count = a; then
1387 elif test $count = ax; then
1388 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1390 echo "Using the following build machine macro files:"
1391 for f in $build_xm_file; do
1392 echo " $srcdir/config/$f"
1397 if test -n "$configured_native_system_header_dir"; then
1398 native_system_header_dir=$configured_native_system_header_dir
1400 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1401 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1405 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1406 gcc_cv_mcontext_underscores,
1408 #include <sys/cdefs.h>
1409 #include <sys/signal.h>
1410 #include <ucontext.h>
1411 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1413 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1414 if test $gcc_cv_mcontext_underscores = yes; then
1415 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1416 [mcontext_t fields start with __])
1425 # Check if a valid thread package
1426 case ${enable_threads} in
1429 target_thread_file='single'
1433 target_thread_file='single'
1435 aix | dce | lynx | mipssde | posix | rtems | \
1436 single | tpf | vxworks | win32)
1437 target_thread_file=${enable_threads}
1440 echo "${enable_threads} is an unknown thread package" 1>&2
1445 if test x${thread_file} = x; then
1446 # No thread file set by target-specific clauses in config.gcc,
1447 # so use file chosen by default logic above
1448 thread_file=${target_thread_file}
1456 if test x$enable___cxa_atexit = xyes || \
1457 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1458 if test x$host = x$target; then
1460 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1461 # keyed to flag_use_cxa_atexit
1466 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1467 [echo "__cxa_atexit can't be enabled on this target"])
1471 # We can't check for __cxa_atexit when building a cross, so assume
1475 if test x$use_cxa_atexit = xyes; then
1476 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1477 [Define if you want to use __cxa_atexit, rather than atexit, to
1478 register C++ destructors for local statics and global objects.
1479 This is essential for fully standards-compliant handling of
1480 destructors, but requires __cxa_atexit in libc.])
1484 # Look for a file containing extra machine modes.
1485 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1486 extra_modes_file='$(srcdir)'/config/${extra_modes}
1487 AC_SUBST(extra_modes_file)
1488 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1489 [Define to the name of a file containing a list of extra machine modes
1490 for this architecture.])
1493 # Convert extra_options into a form suitable for Makefile use.
1496 for f in $extra_options; do
1497 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1498 all_opt_files="$all_opt_files $srcdir/config/$f"
1500 AC_SUBST(extra_opt_files)
1502 # auto-host.h is the file containing items generated by autoconf and is
1503 # the first file included by config.h.
1504 # If host=build, it is correct to have bconfig include auto-host.h
1505 # as well. If host!=build, we are in error and need to do more
1506 # work to find out the build config parameters.
1507 if test x$host = x$build
1509 build_auto=auto-host.h
1511 # We create a subdir, then run autoconf in the subdir.
1512 # To prevent recursion we set host and build for the new
1513 # invocation of configure to the build for this invocation
1520 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1521 *) realsrcdir=../${srcdir};;
1523 saved_CFLAGS="${CFLAGS}"
1524 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1525 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1526 ${realsrcdir}/configure \
1527 --enable-languages=${enable_languages-all} \
1528 --target=$target_alias --host=$build_alias --build=$build_alias
1529 CFLAGS="${saved_CFLAGS}"
1531 # We just finished tests for the build machine, so rename
1532 # the file auto-build.h in the gcc directory.
1533 mv auto-host.h ../auto-build.h
1536 build_auto=auto-build.h
1538 AC_SUBST(build_subdir)
1540 tm_file="${tm_file} defaults.h"
1541 tm_p_file="${tm_p_file} tm-preds.h"
1542 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1543 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1544 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1545 # put this back in temporarily.
1546 xm_file="auto-host.h ansidecl.h ${xm_file}"
1553 # Compile in configure arguments.
1554 if test -f configargs.h ; then
1555 # Being re-configured.
1556 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1557 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1559 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1562 # Double all backslashes and backslash all quotes to turn
1563 # gcc_config_arguments into a C string.
1564 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1565 $gcc_config_arguments
1567 gcc_config_arguments_str=`cat conftest.out`
1570 cat > configargs.h <<EOF
1571 /* Generated automatically. */
1572 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1573 static const char thread_model[] = "$thread_file";
1575 static const struct {
1576 const char *name, *value;
1577 } configure_default_options[] = $configure_default_options;
1582 gcc_BASEVER=`cat $srcdir/BASE-VER`
1583 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1584 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1585 if test -f $srcdir/REVISION ; then
1586 gcc_REVISION=`cat $srcdir/REVISION`
1590 cat > plugin-version.h <<EOF
1591 #include "configargs.h"
1593 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1594 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1595 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1596 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1598 static char basever[] = "$gcc_BASEVER";
1599 static char datestamp[] = "$gcc_DATESTAMP";
1600 static char devphase[] = "$gcc_DEVPHASE";
1601 static char revision[] = "$gcc_REVISION";
1603 /* FIXME plugins: We should make the version information more precise.
1604 One way to do is to add a checksum. */
1606 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1608 configuration_arguments};
1612 # Internationalization
1613 ZW_GNU_GETTEXT_SISTER_DIR
1615 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1616 # -liconv on the link line twice.
1617 case "$LIBINTL" in *$LIBICONV*)
1621 AC_ARG_ENABLE(secureplt,
1622 [AS_HELP_STRING([--enable-secureplt],
1623 [enable -msecure-plt by default for PowerPC])],
1626 AC_ARG_ENABLE(leading-mingw64-underscores,
1627 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1628 [enable leading underscores on 64 bit mingw targets]),
1630 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1631 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1632 [Define if we should use leading underscore on 64 bit mingw targets])])
1635 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1638 AC_ARG_ENABLE(frame-pointer,
1639 [AS_HELP_STRING([--enable-frame-pointer],
1640 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1643 linux* | darwin[[8912]]*)
1644 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1646 enable_frame_pointer=no
1649 enable_frame_pointer=yes
1654 # Windows32 Registry support for specifying GCC installation paths.
1655 AC_ARG_ENABLE(win32-registry,
1656 [AS_HELP_STRING([--disable-win32-registry],
1657 [disable lookup of installation paths in the
1658 Registry on Windows hosts])
1659 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1660 AS_HELP_STRING([--enable-win32-registry=KEY],
1661 [use KEY instead of GCC version as the last portion
1662 of the registry key])],,)
1665 win32 | pe | cygwin* | mingw32* | uwin*)
1666 if test "x$enable_win32_registry" != xno; then
1667 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1670 if test "x$enable_win32_registry" != xno; then
1671 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1672 [Define to 1 if installation paths should be looked up in the Windows
1673 Registry. Ignored on non-Windows hosts.])
1675 if test "x$enable_win32_registry" != xyes \
1676 && test "x$enable_win32_registry" != x; then
1677 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1678 [Define to be the last component of the Windows registry key under which
1679 to look for installation paths. The full key used will be
1680 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1681 The default is the GCC version number.])
1687 # Get an absolute path to the GCC top-level source directory
1688 holddir=`${PWDCMD-pwd}`
1690 topdir=`${PWDCMD-pwd}`
1693 # Conditionalize the makefile for this host machine.
1695 for f in ${host_xmake_file}
1697 if test -f ${srcdir}/config/$f
1699 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1703 # Conditionalize the makefile for this target machine.
1705 for f in ${tmake_file}
1707 if test -f ${srcdir}/config/$f
1709 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1712 tmake_file="${tmake_file_}"
1714 out_object_file=`basename $out_file .c`.o
1715 common_out_object_file=`basename $common_out_file .c`.o
1717 tm_file_list="options.h"
1718 tm_include_list="options.h insn-constants.h"
1719 for f in $tm_file; do
1722 f=`echo $f | sed 's/^..//'`
1723 tm_file_list="${tm_file_list} $f"
1724 tm_include_list="${tm_include_list} $f"
1727 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1728 tm_include_list="${tm_include_list} $f"
1731 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1732 tm_include_list="${tm_include_list} config/$f"
1739 for f in $tm_p_file; do
1742 tm_p_file_list="${tm_p_file_list} $f"
1743 tm_p_include_list="${tm_p_include_list} $f"
1746 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1747 tm_p_include_list="${tm_p_include_list} config/$f"
1753 for f in $xm_file; do
1756 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1757 xm_include_list="${xm_include_list} $f"
1760 xm_file_list="${xm_file_list} $f"
1761 xm_include_list="${xm_include_list} $f"
1764 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1765 xm_include_list="${xm_include_list} config/$f"
1771 host_xm_include_list=
1772 for f in $host_xm_file; do
1775 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1776 host_xm_include_list="${host_xm_include_list} $f"
1779 host_xm_file_list="${host_xm_file_list} $f"
1780 host_xm_include_list="${host_xm_include_list} $f"
1783 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1784 host_xm_include_list="${host_xm_include_list} config/$f"
1790 for f in $build_xm_file; do
1793 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1794 build_xm_include_list="${build_xm_include_list} $f"
1796 auto-build.h | auto-host.h )
1797 build_xm_file_list="${build_xm_file_list} $f"
1798 build_xm_include_list="${build_xm_include_list} $f"
1801 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1802 build_xm_include_list="${build_xm_include_list} config/$f"
1807 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1808 # cross-compiler which does not use the native headers and libraries.
1809 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1810 CROSS= AC_SUBST(CROSS)
1811 ALL=all.internal AC_SUBST(ALL)
1812 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1814 if test "x$with_build_sysroot" != x; then
1815 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1817 # This value is used, even on a native system, because
1818 # CROSS_SYSTEM_HEADER_DIR is just
1819 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1820 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1823 if test x$host != x$target
1825 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1827 SYSTEM_HEADER_DIR=$build_system_header_dir
1828 case "$host","$target" in
1829 # Darwin crosses can use the host system's libraries and headers,
1830 # because of the fat library support. Of course, it must be the
1831 # same version of Darwin on both sides. Allow the user to
1832 # just say --target=foo-darwin without a version number to mean
1833 # "the version on this system".
1834 *-*-darwin*,*-*-darwin*)
1835 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1836 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1837 if test $hostos = $targetos -o $targetos = darwin ; then
1839 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1844 i?86-*-*,x86_64-*-* \
1845 | powerpc*-*-*,powerpc64*-*-*)
1846 CROSS="$CROSS -DNATIVE_CROSS" ;;
1851 if test "x$with_headers" = x; then
1858 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1859 SYSTEM_HEADER_DIR=$build_system_header_dir
1862 # If this is a cross-compiler that does not
1863 # have its own set of headers then define
1866 # If this is using newlib, without having the headers available now,
1867 # then define inhibit_libc in LIBGCC2_CFLAGS.
1868 # This prevents libgcc2 from containing any code which requires libc
1870 : ${inhibit_libc=false}
1871 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1872 test x$with_newlib = xyes ; } &&
1873 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1876 AC_SUBST(inhibit_libc)
1878 # When building gcc with a cross-compiler, we need to adjust things so
1879 # that the generator programs are still built with the native compiler.
1880 # Also, we cannot run fixincludes.
1882 # These are the normal (build=host) settings:
1883 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1884 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1885 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1886 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1888 # And these apply if build != host, or we are generating coverage data
1889 if test x$build != x$host || test "x$coverage_flags" != x
1891 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1892 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1895 # Expand extra_headers to include complete path.
1896 # This substitutes for lots of t-* files.
1898 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1899 for file in ${extra_headers} ; do
1900 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1903 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1904 if test x"$use_gcc_tgmath" = xyes
1905 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1908 # Define collect2 in Makefile.
1909 case $host_can_use_collect2 in
1911 *) collect2='collect2$(exeext)' ;;
1913 AC_SUBST([collect2])
1915 # Add a definition of USE_COLLECT2 if system wants one.
1916 case $use_collect2 in
1917 no) use_collect2= ;;
1920 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1921 xm_defines="${xm_defines} USE_COLLECT2"
1922 case $host_can_use_collect2 in
1924 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1930 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1931 [Define to the name of the LTO plugin DSO that must be
1932 passed to the linker's -plugin=LIB option.])
1934 # ---------------------------
1935 # Assembler & linker features
1936 # ---------------------------
1938 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1939 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1940 # However when ld-new is first executed from the build tree, libtool will
1941 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1942 # to the build tree. While doing this we need to use the previous-stage
1943 # linker, or we have an infinite loop. The presence of a shell script as
1944 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1945 # the gcc/collect-ld script. So we need to know how libtool works, or
1946 # exec-tool will fail.
1948 m4_defun([_LT_CONFIG_COMMANDS], [])
1951 AC_SUBST(enable_fast_install)
1953 # Identify the assembler which will work hand-in-glove with the newly
1954 # built GCC, so that we can examine its features. This is the assembler
1955 # which will be driven by the driver program.
1957 # If build != host, and we aren't building gas in-tree, we identify a
1958 # build->target assembler and hope that it will have the same features
1959 # as the host->target assembler we'll be using.
1960 gcc_cv_gas_major_version=
1961 gcc_cv_gas_minor_version=
1962 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1964 m4_pattern_allow([AS_FOR_TARGET])dnl
1965 AS_VAR_SET_IF(gcc_cv_as,, [
1966 if test -x "$DEFAULT_ASSEMBLER"; then
1967 gcc_cv_as="$DEFAULT_ASSEMBLER"
1968 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1969 && test -f ../gas/Makefile \
1970 && test x$build = x$host; then
1971 gcc_cv_as=../gas/as-new$build_exeext
1972 elif test -x as$build_exeext; then
1973 # Build using assembler in the current directory.
1974 gcc_cv_as=./as$build_exeext
1975 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1976 gcc_cv_as="$AS_FOR_TARGET"
1978 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1981 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1982 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1983 case "$ORIGINAL_AS_FOR_TARGET" in
1984 ./as | ./as$build_exeext) ;;
1985 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1988 AC_MSG_CHECKING(what assembler to use)
1989 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1990 # Single tree build which includes gas. We want to prefer it
1991 # over whatever linker top-level may have detected, since
1992 # we'll use what we're building after installation anyway.
1993 AC_MSG_RESULT(newly built gas)
1995 _gcc_COMPUTE_GAS_VERSION
1996 in_tree_gas_is_elf=no
1997 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1998 || (grep 'obj_format = multi' ../gas/Makefile \
1999 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2001 in_tree_gas_is_elf=yes
2004 AC_MSG_RESULT($gcc_cv_as)
2008 # Identify the linker which will work hand-in-glove with the newly
2009 # built GCC, so that we can examine its features. This is the linker
2010 # which will be driven by the driver program.
2012 # If build != host, and we aren't building gas in-tree, we identify a
2013 # build->target linker and hope that it will have the same features
2014 # as the host->target linker we'll be using.
2015 gcc_cv_gld_major_version=
2016 gcc_cv_gld_minor_version=
2017 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2018 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2020 AS_VAR_SET_IF(gcc_cv_ld,, [
2021 if test -x "$DEFAULT_LINKER"; then
2022 gcc_cv_ld="$DEFAULT_LINKER"
2023 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2024 && test -f ../ld/Makefile \
2025 && test x$build = x$host; then
2026 gcc_cv_ld=../ld/ld-new$build_exeext
2027 elif test -x collect-ld$build_exeext; then
2028 # Build using linker in the current directory.
2029 gcc_cv_ld=./collect-ld$build_exeext
2030 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2031 gcc_cv_ld="$LD_FOR_TARGET"
2033 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2036 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2038 AS_VAR_SET_IF(gcc_cv_gold,, [
2039 if test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2040 && test -f ../gold/Makefile \
2041 && test x$build = x$host; then
2042 gcc_cv_gold=../gold/ld-new$build_exeext
2047 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2048 PLUGIN_LD=`basename $gcc_cv_ld`
2049 AC_ARG_WITH(plugin-ld,
2050 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2051 [if test x"$withval" != x; then
2052 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2053 PLUGIN_LD="$withval"
2055 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2056 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2058 # Check to see if we are using gold instead of ld
2059 AC_MSG_CHECKING(whether we are using gold)
2061 if test x$gcc_cv_ld != x; then
2062 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2063 | grep "GNU gold" > /dev/null; then
2067 AC_MSG_RESULT($ld_is_gold)
2069 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2070 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2071 case "$ORIGINAL_LD_FOR_TARGET" in
2072 ./collect-ld | ./collect-ld$build_exeext) ;;
2073 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2076 ORIGINAL_GOLD_FOR_TARGET=$gcc_cv_gold
2077 AC_SUBST(ORIGINAL_GOLD_FOR_TARGET)
2079 AC_MSG_CHECKING(what linker to use)
2080 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2081 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2082 # Single tree build which includes ld. We want to prefer it
2083 # over whatever linker top-level may have detected, since
2084 # we'll use what we're building after installation anyway.
2085 AC_MSG_RESULT(newly built ld)
2087 in_tree_ld_is_elf=no
2088 if (grep 'EMUL = .*elf' ../ld/Makefile \
2089 || grep 'EMUL = .*linux' ../ld/Makefile \
2090 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2091 in_tree_ld_is_elf=yes
2092 elif test "$ld_is_gold" = yes; then
2093 in_tree_ld_is_elf=yes
2095 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
2098 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2099 if test x$gcc_cv_gld_version != x; then
2103 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2104 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2107 AC_MSG_RESULT($gcc_cv_ld)
2111 # Figure out what nm we will be using.
2112 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2113 AS_VAR_SET_IF(gcc_cv_nm,, [
2114 if test -f $gcc_cv_binutils_srcdir/configure.in \
2115 && test -f ../binutils/Makefile \
2116 && test x$build = x$host; then
2117 gcc_cv_nm=../binutils/nm-new$build_exeext
2118 elif test -x nm$build_exeext; then
2119 gcc_cv_nm=./nm$build_exeext
2120 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2121 gcc_cv_nm="$NM_FOR_TARGET"
2123 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2126 AC_MSG_CHECKING(what nm to use)
2127 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2128 # Single tree build which includes binutils.
2129 AC_MSG_RESULT(newly built nm)
2132 AC_MSG_RESULT($gcc_cv_nm)
2136 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2137 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2138 case "$ORIGINAL_NM_FOR_TARGET" in
2139 ./nm | ./nm$build_exeext) ;;
2140 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2144 # Figure out what objdump we will be using.
2145 AS_VAR_SET_IF(gcc_cv_objdump,, [
2146 if test -f $gcc_cv_binutils_srcdir/configure.in \
2147 && test -f ../binutils/Makefile \
2148 && test x$build = x$host; then
2149 # Single tree build which includes binutils.
2150 gcc_cv_objdump=../binutils/objdump$build_exeext
2151 elif test -x objdump$build_exeext; then
2152 gcc_cv_objdump=./objdump$build_exeext
2153 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2154 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2156 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2159 AC_MSG_CHECKING(what objdump to use)
2160 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2161 # Single tree build which includes binutils.
2162 AC_MSG_RESULT(newly built objdump)
2163 elif test x$gcc_cv_objdump = x; then
2164 AC_MSG_RESULT(not found)
2166 AC_MSG_RESULT($gcc_cv_objdump)
2169 # Figure out what readelf we will be using.
2170 AS_VAR_SET_IF(gcc_cv_readelf,, [
2171 if test -f $gcc_cv_binutils_srcdir/configure.in \
2172 && test -f ../binutils/Makefile \
2173 && test x$build = x$host; then
2174 # Single tree build which includes binutils.
2175 gcc_cv_readelf=../binutils/readelf$build_exeext
2176 elif test -x readelf$build_exeext; then
2177 gcc_cv_readelf=./readelf$build_exeext
2179 AC_PATH_PROG(gcc_cv_readelf, readelf)
2182 AC_MSG_CHECKING(what readelf to use)
2183 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2184 # Single tree build which includes binutils.
2185 AC_MSG_RESULT(newly built readelf)
2186 elif test x$gcc_cv_readelf = x; then
2187 AC_MSG_RESULT(not found)
2189 AC_MSG_RESULT($gcc_cv_readelf)
2192 # Figure out what assembler alignment features are present.
2193 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2197 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2198 [Define if your assembler supports .balign and .p2align.])])
2200 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2203 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2204 [Define if your assembler supports specifying the maximum number
2205 of bytes to skip when using the GAS .p2align command.])])
2207 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2210 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2211 [Define if your assembler supports .literal16.])])
2213 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2215 [conftest_label1: .word 0
2217 conftest_label2: .word 0
2219 [if test x$gcc_cv_nm != x; then
2220 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2221 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2222 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2224 else gcc_cv_as_subsection_m1=yes
2226 rm -f conftest.nm1 conftest.nm2
2228 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2229 [Define if your assembler supports .subsection and .subsection -1 starts
2230 emitting at the beginning of your section.])])
2232 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2235 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2237 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2239 [ .weakref foobar, barfnot],,
2240 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2242 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2245 .NSUBSPA $CODE$,COMDAT],,
2246 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2248 # .hidden needs to be supported in both the assembler and the linker,
2249 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2250 # This is irritatingly difficult to feature test for; we have to check the
2251 # date string after the version number. If we've got an in-tree
2252 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2254 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2255 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2259 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2260 # STV_HIDDEN, so disable .hidden support if so.
2262 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2263 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2264 cat > conftest.s <<EOF
2271 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2272 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2273 grep '\.hidden default' > /dev/null; then
2276 gcc_cv_as_hidden=yes
2279 # Assume bug is present if objdump is missing.
2284 gcc_cv_as_hidden=yes
2289 # Darwin as has some visibility support, though with a different syntax.
2290 gcc_cv_as_hidden=yes
2294 # gnu_indirect_function type is an extension proposed at
2295 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2296 # selection of function implementation
2297 AC_ARG_ENABLE(gnu-indirect-function,
2298 [AS_HELP_STRING([--enable-gnu-indirect-function],
2299 [enable the use of the @gnu_indirect_function to glibc systems])],
2300 [case $enable_gnu_indirect_function in
2302 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2303 Valid choices are 'yes' and 'no'.]) ;;
2305 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2306 if test x$enable_gnu_indirect_function = xyes; then
2307 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2308 [Define if your system supports gnu indirect functions.])
2312 if test $in_tree_ld != yes ; then
2313 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2314 if echo "$ld_ver" | grep GNU > /dev/null; then
2315 if test x"$ld_is_gold" = xyes; then
2316 # GNU gold --version looks like this:
2318 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2320 # We extract the binutils version which is more familiar and specific
2321 # than the gold version.
2322 ld_vers=`echo $ld_ver | sed -n \
2323 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2325 # GNU ld --version looks like this:
2327 # GNU ld (GNU Binutils) 2.21.51.20110225
2328 ld_vers=`echo $ld_ver | sed -n \
2329 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2331 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2332 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2333 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2334 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2338 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2341 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2342 # /usr/ccs/bin/ld has been configured.
2343 ld_ver=`$gcc_cv_ld -V 2>&1`
2344 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2345 ld_vers=`echo $ld_ver | sed -n \
2346 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2347 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2348 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2356 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2357 [[if test $in_tree_ld = yes ; then
2359 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2360 && test $in_tree_ld_is_elf = yes; then
2361 gcc_cv_ld_hidden=yes
2364 gcc_cv_ld_hidden=yes
2365 if test x"$ld_is_gold" = xyes; then
2367 elif echo "$ld_ver" | grep GNU > /dev/null; then
2368 if test 0"$ld_date" -lt 20020404; then
2369 if test -n "$ld_date"; then
2370 # If there was date string, but was earlier than 2002-04-04, fail
2372 elif test -z "$ld_vers"; then
2373 # If there was no date string nor ld version number, something is wrong
2376 test -z "$ld_vers_patch" && ld_vers_patch=0
2377 if test "$ld_vers_major" -lt 2; then
2379 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2380 gcc_cv_ld_hidden="no"
2381 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2389 # Darwin ld has some visibility support.
2390 gcc_cv_ld_hidden=yes
2392 hppa64*-*-hpux* | ia64*-*-hpux*)
2393 gcc_cv_ld_hidden=yes
2396 # .hidden support was backported to Solaris 8, starting with ld
2398 if test "$ld_vers_minor" -ge 276; then
2399 gcc_cv_ld_hidden=yes
2404 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2405 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2406 # .symbolic was only added in Solaris 9 12/02.
2407 gcc_cv_ld_hidden=yes
2415 libgcc_visibility=no
2416 AC_SUBST(libgcc_visibility)
2417 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2418 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2419 libgcc_visibility=yes
2420 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2421 [Define if your assembler and linker support .hidden.])
2424 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2425 gcc_cv_ld_ro_rw_mix=unknown
2426 if test $in_tree_ld = yes ; then
2427 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2428 && test $in_tree_ld_is_elf = yes; then
2429 gcc_cv_ld_ro_rw_mix=read-write
2431 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2432 echo '.section myfoosect, "a"' > conftest1.s
2433 echo '.section myfoosect, "aw"' > conftest2.s
2434 echo '.byte 1' >> conftest2.s
2435 echo '.section myfoosect, "a"' > conftest3.s
2436 echo '.byte 0' >> conftest3.s
2437 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2438 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2439 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2440 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2441 conftest2.o conftest3.o > /dev/null 2>&1; then
2442 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2443 | sed -e '/myfoosect/!d' -e N`
2444 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2445 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2446 gcc_cv_ld_ro_rw_mix=read-only
2448 gcc_cv_ld_ro_rw_mix=read-write
2453 rm -f conftest.* conftest[123].*
2456 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2457 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2458 [Define if your linker links a mix of read-only
2459 and read-write sections into a read-write section.])
2461 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2463 gcc_AC_INITFINI_ARRAY
2465 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2466 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2474 [[# GAS versions before 2.11 do not support uleb128,
2475 # despite appearing to.
2476 # ??? There exists an elf-specific test that will crash
2477 # the assembler. Perhaps it's better to figure out whether
2478 # arbitrary sections are supported and try the test.
2479 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2480 if echo "$as_ver" | grep GNU > /dev/null; then
2481 as_vers=`echo $as_ver | sed -n \
2482 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2483 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2484 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2485 if test $as_major -eq 2 && test $as_minor -lt 11
2487 else gcc_cv_as_leb128=yes
2490 [AC_DEFINE(HAVE_AS_LEB128, 1,
2491 [Define if your assembler supports .sleb128 and .uleb128.])])
2493 # Check if we have assembler support for unwind directives.
2494 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2501 .cfi_escape 1, 2, 3, 4, 5
2505 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2506 # read-only and read-write sections, we need to make sure that the
2507 # assembler used emits read-write .eh_frame sections.
2508 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2509 if test "x$gcc_cv_objdump" != x; then
2510 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2511 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2512 gcc_cv_as_cfi_directive=no
2515 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2516 # On Solaris/x86, make sure that GCC and gas agree on using
2517 # read-only .eh_frame sections for 64-bit.
2518 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2519 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2520 sed -e /.eh_frame/!d -e N | \
2521 grep READONLY > /dev/null; then
2522 gcc_cv_as_cfi_directive=yes
2524 gcc_cv_as_cfi_directive=no
2528 gcc_cv_as_cfi_directive=yes
2533 # no objdump, err on the side of caution
2534 gcc_cv_as_cfi_directive=no
2537 gcc_cv_as_cfi_directive=yes
2541 gcc_cv_as_cfi_directive=yes
2544 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2545 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2549 .cfi_adjust_cfa_offset 64
2551 .cfi_adjust_cfa_offset 128
2554 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2555 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2556 gcc_cv_as_cfi_advance_working=yes
2560 # no objdump, err on the side of caution
2561 gcc_cv_as_cfi_advance_working=no
2563 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2564 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2565 [`if test $gcc_cv_as_cfi_directive = yes \
2566 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2567 [Define 0/1 if your assembler supports CFI directives.])
2569 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2570 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2571 gcc_cv_as_cfi_personality_directive, ,,
2574 .cfi_personality 0, symbol
2576 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2577 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2578 then echo 1; else echo 0; fi`],
2579 [Define 0/1 if your assembler supports .cfi_personality.])
2581 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2582 gcc_cv_as_cfi_sections_directive, ,,
2584 .cfi_sections .debug_frame, .eh_frame
2588 win32 | pe | cygwin* | mingw32* | uwin*)
2589 # Need to check that we generated the correct relocation for the
2590 # .debug_frame section. This was fixed for binutils 2.21.
2591 gcc_cv_as_cfi_sections_directive=no
2592 if test "x$gcc_cv_objdump" != x; then
2593 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2594 grep secrel > /dev/null; then
2595 gcc_cv_as_cfi_sections_directive=yes
2600 gcc_cv_as_cfi_sections_directive=yes
2603 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2604 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2605 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2606 then echo 1; else echo 0; fi`],
2607 [Define 0/1 if your assembler supports .cfi_sections.])
2609 # GAS versions up to and including 2.11.0 may mis-optimize
2611 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2619 .section .eh_frame,"aw",@progbits
2621 .4byte .LECIE1-.LSCIE1
2635 .4byte .LEFDE1-.LASFDE1
2637 .4byte .LASFDE1-__FRAME_BEGIN__
2645 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2646 cat > conftest.lit <<EOF
2647 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2648 0010 01000000 12000000 18000000 00000000 ................
2649 0020 08000000 04080000 0044 .........D @&t@
2651 cat > conftest.big <<EOF
2652 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2653 0010 00000001 00000012 00000018 00000000 ................
2654 0020 00000008 04000000 0844 .........D @&t@
2656 # If the assembler didn't choke, and we can objdump,
2657 # and we got the correct data, then succeed.
2658 # The text in the here-document typically retains its unix-style line
2659 # endings, while the output of objdump will use host line endings.
2660 # Therefore, use diff -b for the comparisons.
2661 if test x$gcc_cv_objdump != x \
2662 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2663 | tail -3 > conftest.got \
2664 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2665 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2667 gcc_cv_as_eh_frame=yes
2668 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2669 gcc_cv_as_eh_frame=buggy
2671 # Uh oh, what do we do now?
2672 gcc_cv_as_eh_frame=no
2675 if test $gcc_cv_as_eh_frame = buggy; then
2676 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2677 [Define if your assembler mis-optimizes .eh_frame data.])
2680 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2681 [elf,2,12,0], [--fatal-warnings],
2682 [.section .rodata.str, "aMS", @progbits, 1])
2683 if test $gcc_cv_as_shf_merge = no; then
2684 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2685 [elf,2,12,0], [--fatal-warnings],
2686 [.section .rodata.str, "aMS", %progbits, 1])
2688 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2689 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2690 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2692 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2693 gcc_cv_as_comdat_group,
2694 [elf,2,16,0], [--fatal-warnings],
2695 [.section .text,"axG",@progbits,.foo,comdat])
2696 if test $gcc_cv_as_comdat_group = yes; then
2697 gcc_cv_as_comdat_group_percent=no
2698 gcc_cv_as_comdat_group_group=no
2700 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2701 gcc_cv_as_comdat_group_percent,
2702 [elf,2,16,0], [--fatal-warnings],
2703 [.section .text,"axG",%progbits,.foo,comdat])
2704 if test $gcc_cv_as_comdat_group_percent = yes; then
2705 gcc_cv_as_comdat_group_group=no
2708 # Sun as uses a completely different syntax.
2713 .group foo,".text%foo",#comdat
2714 .section ".text%foo", #alloc,#execinstr,#progbits
2719 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2721 .group foo,.text%foo,#comdat
2722 .section .text%foo, "ax", @progbits
2728 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2729 gcc_cv_as_comdat_group_group,
2735 if test x"$ld_is_gold" = xyes; then
2737 elif test $in_tree_ld = yes ; then
2739 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2740 && test $in_tree_ld_is_elf = yes; then
2743 elif echo "$ld_ver" | grep GNU > /dev/null; then
2745 if test 0"$ld_date" -lt 20050308; then
2746 if test -n "$ld_date"; then
2747 # If there was date string, but was earlier than 2005-03-08, fail
2749 elif test "$ld_vers_major" -lt 2; then
2751 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2758 *-*-solaris2.1[1-9]*)
2760 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2761 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2764 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2765 # least ld version 1.2267.
2766 if test "$ld_vers_major" -gt 1; then
2768 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2770 elif test "$ld_vers_minor" -ge 2267; then
2775 # Assume linkers other than GNU ld don't support COMDAT group.
2781 # Allow overriding the automatic COMDAT group tests above.
2782 AC_ARG_ENABLE(comdat,
2783 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2784 [comdat_group="$enable_comdat"])
2785 if test $comdat_group = no; then
2786 gcc_cv_as_comdat_group=no
2787 gcc_cv_as_comdat_group_percent=no
2788 gcc_cv_as_comdat_group_group=no
2790 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2791 [`if test $gcc_cv_as_comdat_group = yes \
2792 || test $gcc_cv_as_comdat_group_percent = yes \
2793 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2794 [Define 0/1 if your assembler and linker support COMDAT groups.])
2796 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2797 gcc_cv_as_discriminator,
2801 .loc 1 1 0 discriminator 1],,
2802 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2803 [Define if your assembler supports the .loc discriminator sub-directive.])])
2805 # Thread-local storage - the check is heavily parameterized.
2814 .section ".tdata","awT",@progbits
2817 ldq $27,__tls_get_addr($29) !literal!1
2818 lda $16,foo($29) !tlsgd!1
2819 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2820 ldq $27,__tls_get_addr($29) !literal!2
2821 lda $16,foo($29) !tlsldm!2
2822 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2823 ldq $1,foo($29) !gotdtprel
2824 ldah $2,foo($29) !dtprelhi
2825 lda $3,foo($2) !dtprello
2826 lda $4,foo($29) !dtprel
2827 ldq $1,foo($29) !gottprel
2828 ldah $2,foo($29) !tprelhi
2829 lda $3,foo($2) !tprello
2830 lda $4,foo($29) !tprel'
2833 tls_as_opt=--fatal-warnings
2835 cris-*-*|crisv32-*-*)
2837 .section ".tdata","awT",@progbits
2844 tls_as_opt=--fatal-warnings
2848 .section ".tdata","awT",@progbits
2860 .section ".tdata","awT",@progbits
2864 addil LT%foo-$tls_gdidx$,gp
2865 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2868 addil LT%foo-$tls_ldidx$,gp
2870 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2871 addil LR%foo-$tls_dtpoff$,%ret0
2872 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2874 addil LT%foo-$tls_ieoff$,gp
2875 ldw RT%foo-$tls_ieoff$(%r1),%t2
2878 addil LR%foo-$tls_leoff$,%t1
2879 ldo RR%foo-$tls_leoff$(%r1),%t2'
2882 tls_as_opt=--fatal-warnings
2886 .section ".tdata","awT",%progbits
2897 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2899 i[34567]86-*-solaris2.*)
2901 tga_func=___tls_get_addr
2903 x86_64-*-solaris2.1[0-9]*)
2905 tga_func=__tls_get_addr
2911 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2913 .section .tdata,"awt",@progbits'
2917 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2918 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2922 .section ".tdata","awT",@progbits'
2925 tls_as_opt="--fatal-warnings"
2927 conftest_s="$conftest_s
2931 leal foo@tlsgd(,%ebx,1), %eax
2932 leal foo@tlsldm(%ebx), %eax
2933 leal foo@dtpoff(%eax), %edx
2934 movl foo@gottpoff(%ebx), %eax
2935 subl foo@gottpoff(%ebx), %eax
2936 addl foo@gotntpoff(%ebx), %eax
2937 movl foo@indntpoff, %eax
2938 movl \$foo@tpoff, %eax
2939 subl \$foo@tpoff, %eax
2940 leal foo@ntpoff(%ecx), %eax"
2944 .section ".tdata","awT",@progbits
2948 leaq foo@TLSGD(%rip), %rdi
2949 leaq foo@TLSLD(%rip), %rdi
2950 leaq foo@DTPOFF(%rax), %rdx
2951 movq foo@GOTTPOFF(%rip), %rax
2952 movq $foo@TPOFF, %rax'
2955 tls_as_opt=--fatal-warnings
2959 .section ".tdata","awT",@progbits
2962 addl r16 = @ltoff(@dtpmod(foo#)), gp
2963 addl r17 = @ltoff(@dtprel(foo#)), gp
2964 addl r18 = @ltoff(@tprel(foo#)), gp
2965 addl r19 = @dtprel(foo#), gp
2966 adds r21 = @dtprel(foo#), r13
2967 movl r23 = @dtprel(foo#)
2968 addl r20 = @tprel(foo#), gp
2969 adds r22 = @tprel(foo#), r13
2970 movl r24 = @tprel(foo#)'
2973 tls_as_opt=--fatal-warnings
2977 .section .tdata,"awT",@progbits
2981 addiu $4, $28, %tlsgd(x)
2982 addiu $4, $28, %tlsldm(x)
2983 lui $4, %dtprel_hi(x)
2984 addiu $4, $4, %dtprel_lo(x)
2985 lw $4, %gottprel(x)($28)
2986 lui $4, %tprel_hi(x)
2987 addiu $4, $4, %tprel_lo(x)'
2990 tls_as_opt='-32 --fatal-warnings'
2994 .section .tdata,"awT",@progbits
2999 move.l x@TLSGD(%a5),%a0
3000 move.l x@TLSLDM(%a5),%a0
3001 move.l x@TLSLDO(%a5),%a0
3002 move.l x@TLSIE(%a5),%a0
3003 move.l x@TLSLE(%a5),%a0'
3006 tls_as_opt='--fatal-warnings'
3010 .section ".tdata","awT",@progbits
3018 addi 3,31,ld0@got@tlsgd
3020 addi 3,31,x1@got@tlsld
3023 addis 9,3,x2@dtprel@ha
3024 addi 9,9,x2@dtprel@l
3025 lwz 9,x3@got@tprel(31)
3028 addis 9,2,x2@tprel@ha
3029 addi 9,9,x2@tprel@l'
3032 tls_as_opt="-a32 --fatal-warnings"
3036 .section ".tdata","awT",@progbits
3044 addi 3,2,ld0@got@tlsgd
3050 addi 3,2,x1@got@tlsld
3056 addis 9,3,x2@dtprel@ha
3057 addi 9,9,x2@dtprel@l
3060 ld 9,x3@got@dtprel(2)
3066 tls_as_opt="-a64 --fatal-warnings"
3070 .section ".tdata","awT",@progbits
3079 l %r1,foo@GOTNTPOFF(%r12)
3080 l %r1,0(%r1):tls_load:foo
3081 bas %r14,0(%r1,%r13):tls_gdcall:foo
3082 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3085 tls_as_opt="-m31 --fatal-warnings"
3089 .section ".tdata","awT",@progbits
3097 lg %r1,foo@GOTNTPOFF(%r12)
3098 larl %r1,foo@INDNTPOFF
3099 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3100 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3103 tls_as_opt="-m64 -Aesame --fatal-warnings"
3105 sh-*-* | sh[34]-*-*)
3107 .section ".tdata","awT",@progbits
3117 tls_as_opt=--fatal-warnings
3121 sparc*-sun-solaris2.*)
3123 tga_func=__tls_get_addr
3129 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3131 .section ".tdata",#alloc,#write,#tls'
3136 .section ".tdata","awT",@progbits'
3139 tls_as_opt="-32 --fatal-warnings"
3141 conftest_s="$conftest_s
3144 sethi %tgd_hi22(foo), %o0
3145 add %o0, %tgd_lo10(foo), %o1
3146 add %l7, %o1, %o0, %tgd_add(foo)
3147 call __tls_get_addr, %tgd_call(foo)
3148 sethi %tldm_hi22(foo), %l1
3149 add %l1, %tldm_lo10(foo), %l2
3150 add %l7, %l2, %o0, %tldm_add(foo)
3151 call __tls_get_addr, %tldm_call(foo)
3152 sethi %tldo_hix22(foo), %l3
3153 xor %l3, %tldo_lox10(foo), %l4
3154 add %o0, %l4, %l5, %tldo_add(foo)
3155 sethi %tie_hi22(foo), %o3
3156 add %o3, %tie_lo10(foo), %o3
3157 ld [%l7 + %o3], %o2, %tie_ld(foo)
3158 add %g7, %o2, %o4, %tie_add(foo)
3159 sethi %tle_hix22(foo), %l1
3160 xor %l1, %tle_lox10(foo), %o5
3161 ld [%g7 + %o5], %o1"
3165 .section ".tdata","awT",@progbits
3168 addli r0, zero, tls_gd(foo)
3169 auli r0, zero, tls_gd_ha16(foo)
3170 addli r0, r0, tls_gd_lo16(foo)
3172 addli r0, zero, tls_ie(foo)
3173 auli r0, r0, tls_ie_ha16(foo)
3174 addli r0, r0, tls_ie_lo16(foo)'
3177 tls_as_opt="--fatal-warnings"
3181 .section ".tdata","awT",@progbits
3184 shl16insli r0, zero, hw0_last_tls_gd(foo)
3185 shl16insli r0, zero, hw1_last_tls_gd(foo)
3186 shl16insli r0, r0, hw0_tls_gd(foo)
3188 shl16insli r0, zero, hw1_last_tls_ie(foo)
3189 shl16insli r0, r0, hw0_tls_ie(foo)'
3192 tls_as_opt="--fatal-warnings"
3196 .section ".tdata","awT",@progbits
3199 movi a8, foo@TLSFUNC
3200 movi a10, foo@TLSARG
3201 callx8.tls a8, foo@TLSCALL'
3208 if test "x$enable_tls" = xno ; then
3209 : # TLS explicitly disabled.
3210 elif test "x$enable_tls" = xyes ; then
3211 set_have_as_tls=yes # TLS explicitly enabled.
3212 elif test -z "$tls_first_major"; then
3213 : # If we don't have a check, assume no support.
3215 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3216 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3217 [set_have_as_tls=yes])
3221 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3222 # with TLS support are in use, native TLS cannot work.
3226 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3227 # gld with TLS support are in use, native TLS cannot work.
3230 # TLS was introduced in the Solaris 9 FCS release and backported to
3231 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3232 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3233 # ld and GCC don't support any longer.
3235 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3237 # Check ld and ld.so.1 TLS support.
3238 if echo "$ld_ver" | grep GNU > /dev/null; then
3239 # Assume all interesting versions of GNU ld have TLS support.
3240 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3244 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3246 min_tls_ld_vers_minor=280
3248 # Solaris 8/SPARC ld has TLS support since version 1.272.
3249 sparc*-*-solaris2.8)
3250 min_tls_ld_vers_minor=272
3252 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3254 min_tls_ld_vers_minor=374
3256 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3257 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3258 min_tls_ld_vers_minor=343
3261 if test "$ld_vers_major" -gt 1 || \
3262 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3268 AC_MSG_RESULT($ld_tls_support)
3271 save_LDFLAGS="$LDFLAGS"
3275 AC_MSG_CHECKING(alternate thread library)
3277 # TLS support was backported to Solaris 8 patches, but only lives in
3278 # the alternate thread library which became the default in Solaris 9.
3279 # We want to always use that, irrespective of TLS support.
3281 # Take multilib subdir into account. There's no spec to handle
3282 # this. The 64 symlink exists since Solaris 8.
3283 lwp_dir=/usr/lib/lwp
3284 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3285 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3292 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3293 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3294 [Define to the linker flags to use for -pthread.])
3295 AC_MSG_RESULT($lwp_dir)
3297 AC_MSG_CHECKING(library containing $tga_func)
3298 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3299 # (32-bit x86) only lived in libthread, so check for that. Keep
3300 # set_have_as_tls if found, disable if not.
3301 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3302 # Clear LIBS if we cannot support TLS.
3303 if test $set_have_as_tls = no; then
3306 # Even without TLS support on Solaris 8, explicitly link with libthread
3307 # to guarantee that the alternate thread library is used.
3313 # Always define LIB_TLS_SPEC, even without TLS support.
3314 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3315 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3316 AC_MSG_RESULT($LIBS)
3319 LDFLAGS="$save_LDFLAGS"
3322 if test $set_have_as_tls = yes ; then
3323 AC_DEFINE(HAVE_AS_TLS, 1,
3324 [Define if your assembler and linker support thread-local storage.])
3327 # Target-specific assembler checks.
3329 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3330 gcc_cv_ld_static_dynamic=no
3331 gcc_cv_ld_static_option='-Bstatic'
3332 gcc_cv_ld_dynamic_option='-Bdynamic'
3333 if test $in_tree_ld = yes ; then
3334 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3335 gcc_cv_ld_static_dynamic=yes
3337 elif test x$gcc_cv_ld != x; then
3338 # Check if linker supports -Bstatic/-Bdynamic option
3339 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3340 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3341 gcc_cv_ld_static_dynamic=yes
3344 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3346 gcc_cv_ld_static_dynamic=yes
3347 gcc_cv_ld_static_option="-noso"
3348 gcc_cv_ld_dynamic_option="-so_archive"
3350 # HP-UX ld uses -a flags to select between shared and archive.
3352 if test x"$gnu_ld" = xno; then
3353 gcc_cv_ld_static_dynamic=yes
3354 gcc_cv_ld_static_option="-aarchive_shared"
3355 gcc_cv_ld_dynamic_option="-adefault"
3358 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3360 gcc_cv_ld_static_dynamic=yes
3362 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3364 gcc_cv_ld_static_dynamic=yes
3369 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3370 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3371 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3372 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3373 [Define to the linker option to disable use of shared objects.])
3374 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3375 [Define to the linker option to enable use of shared objects.])
3377 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3379 if test x"$demangler_in_ld" = xyes; then
3380 AC_MSG_CHECKING(linker --demangle support)
3381 gcc_cv_ld_demangle=no
3382 if test $in_tree_ld = yes; then
3383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3384 gcc_cv_ld_demangle=yes
3386 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3387 # Check if the GNU linker supports --demangle option
3388 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3389 gcc_cv_ld_demangle=yes
3392 if test x"$gcc_cv_ld_demangle" = xyes; then
3393 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3394 [Define if your linker supports --demangle option.])
3396 AC_MSG_RESULT($gcc_cv_ld_demangle)
3399 AC_MSG_CHECKING(linker plugin support)
3401 if test -f liblto_plugin.la; then
3402 save_ld_ver="$ld_ver"
3403 save_ld_vers_major="$ld_vers_major"
3404 save_ld_vers_minor="$ld_vers_minor"
3405 save_ld_is_gold="$ld_is_gold"
3409 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3411 # FIXME: ld_is_gold?
3412 ld_vers_major="$gcc_cv_gld_major_version"
3413 ld_vers_minor="$gcc_cv_gld_minor_version"
3415 # Determine plugin linker version.
3416 # FIXME: Partial duplicate from above, generalize.
3418 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3419 if echo "$ld_ver" | grep GNU > /dev/null; then
3420 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3422 ld_vers=`echo $ld_ver | sed -n \
3423 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3425 ld_vers=`echo $ld_ver | sed -n \
3426 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3428 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3429 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3434 # Determine plugin support.
3435 if echo "$ld_ver" | grep GNU > /dev/null; then
3436 # Require GNU ld or gold 2.21+ for plugin support by default.
3437 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3439 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3440 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3445 ld_ver="$save_ld_ver"
3446 ld_vers_major="$save_ld_vers_major"
3447 ld_vers_minor="$save_ld_vers_minor"
3448 ld_is_gold="$save_ld_is_gold"
3450 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3451 [Define to the level of your linker's plugin support.])
3452 AC_MSG_RESULT($gcc_cv_lto_plugin)
3455 # All TARGET_ABI_OSF targets.
3456 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3457 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3458 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3461 extbl $3, $2, $3 !lituse_bytoff!1
3462 ldq $2, a($29) !literal!1
3463 ldq $4, b($29) !literal!2
3464 ldq_u $3, 0($2) !lituse_base!1
3465 ldq $27, f($29) !literal!5
3466 jsr $26, ($27), f !lituse_jsr!5
3467 ldah $29, 0($26) !gpdisp!3
3468 lda $0, c($29) !gprel
3469 ldah $1, d($29) !gprelhigh
3470 lda $1, d($1) !gprellow
3471 lda $29, 0($29) !gpdisp!3],,
3472 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3473 [Define if your assembler supports explicit relocations.])])
3474 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3475 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3478 ldq $27, a($29) !literal!1
3479 jsr $26, ($27), a !lituse_jsrdirect!1],,
3480 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3481 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3485 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3486 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3487 [-no-mul-bug-abort], [.text],,
3488 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3489 [Define if your assembler supports the -no-mul-bug-abort option.])])
3493 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3494 [.register %g2, #scratch],,
3495 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3496 [Define if your assembler supports .register.])])
3498 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3500 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3501 [Define if your assembler supports -relax option.])])
3503 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3504 gcc_cv_as_sparc_gotdata_op,,
3511 sethi %gdop_hix22(foo), %g1
3512 xor %g1, %gdop_lox10(foo), %g1
3513 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3514 [if test x$gcc_cv_ld != x \
3515 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3516 if test x$gcc_cv_objdump != x; then
3517 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3518 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3519 gcc_cv_as_sparc_gotdata_op=no
3521 gcc_cv_as_sparc_gotdata_op=yes
3526 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3527 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3529 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3530 gcc_cv_as_sparc_ua_pcrel,,
3538 .uaword %r_disp32(foo)],
3539 [if test x$gcc_cv_ld != x \
3540 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3541 gcc_cv_as_sparc_ua_pcrel=yes
3544 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3545 [Define if your assembler and linker support unaligned PC relative relocs.])
3547 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3548 gcc_cv_as_sparc_ua_pcrel_hidden,,
3553 .uaword %r_disp32(foo)
3554 .byte 0x32, 0x33, 0x34
3559 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3560 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3561 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3562 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3563 if $gcc_cv_objdump -R conftest 2> /dev/null \
3564 | grep 'DISP32' > /dev/null 2>&1; then
3567 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3571 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3572 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3573 ]) # unaligned pcrel relocs
3575 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3576 gcc_cv_as_sparc_offsetable_lo10,,
3579 or %g1, %lo(ab) + 12, %g1
3580 or %g1, %lo(ab + 12), %g1],
3581 [if test x$gcc_cv_objdump != x \
3582 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3583 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3584 gcc_cv_as_sparc_offsetable_lo10=yes
3586 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3587 [Define if your assembler supports offsetable %lo().])])
3589 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3590 gcc_cv_as_sparc_fmaf,,
3593 .register %g2, #scratch
3594 .register %g3, #scratch
3596 fmaddd %f0, %f2, %f4, %f6
3597 addxccc %g1, %g2, %g3
3598 fsrl32 %f2, %f4, %f8
3599 fnaddd %f10, %f12, %f14],,
3600 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3601 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3605 i[34567]86-*-* | x86_64-*-*)
3609 # Full C++ conformance when using a shared libstdc++-v3 requires some
3610 # support from the Cygwin DLL, which in more recent versions exports
3611 # wrappers to aid in interposing and redirecting operators new, delete,
3612 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3613 # are configuring for a version of Cygwin that exports the wrappers.
3614 if test x$host = x$target; then
3615 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3617 # Can't check presence of libc functions during cross-compile, so
3618 # we just have to assume we're building for an up-to-date target.
3619 gcc_ac_cygwin_dll_wrappers=yes
3621 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3622 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3623 [Define if you want to generate code by default that assumes that the
3624 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3627 cygwin* | pe | mingw32* | interix*)
3628 # Recent binutils allows the three-operand form of ".comm" on PE. This
3629 # definition is used unconditionally to initialise the default state of
3630 # the target option variable that governs usage of the feature.
3631 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3632 [2,19,52],,[.comm foo,1,32])
3633 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3634 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3635 [Define if your assembler supports specifying the alignment
3636 of objects allocated using the GAS .comm command.])
3637 # Used for DWARF 2 in PE
3638 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3639 gcc_cv_as_ix86_pe_secrel32,
3645 [if test x$gcc_cv_ld != x \
3646 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3647 gcc_cv_as_ix86_pe_secrel32=yes
3650 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3651 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3652 # Test if the assembler supports the extended form of the .section
3653 # directive that specifies section alignment. LTO support uses this,
3654 # but normally only after installation, so we warn but don't fail the
3655 # configure if LTO is enabled but the assembler does not support it.
3656 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3657 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3658 if test x$gcc_cv_as_section_has_align != xyes; then
3659 case ",$enable_languages," in
3661 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3665 # Test if the assembler supports the section flag 'e' for specifying
3666 # an excluded section.
3667 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3671 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3672 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3673 [Define if your assembler supports specifying the section flag e.])
3677 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3678 gcc_cv_as_ix86_filds,,,
3679 [filds mem; fists mem],,
3680 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3681 [Define if your assembler uses filds and fists mnemonics.])])
3683 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3684 gcc_cv_as_ix86_fildq,,,
3685 [fildq mem; fistpq mem],,
3686 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3687 [Define if your assembler uses fildq and fistq mnemonics.])])
3689 gcc_GAS_CHECK_FEATURE([cmov syntax],
3690 gcc_cv_as_ix86_cmov_sun_syntax,,,
3691 [cmovl.l %edx, %eax],,
3692 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3693 [Define if your assembler supports the Sun syntax for cmov.])])
3695 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3696 gcc_cv_as_ix86_ffreep,,,
3698 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3699 [Define if your assembler supports the ffreep mnemonic.])])
3701 gcc_GAS_CHECK_FEATURE([.quad directive],
3702 gcc_cv_as_ix86_quad,,,
3704 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3705 [Define if your assembler supports the .quad directive.])])
3707 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3708 gcc_cv_as_ix86_sahf,,,
3711 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3712 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3714 gcc_GAS_CHECK_FEATURE([swap suffix],
3715 gcc_cv_as_ix86_swap,,,
3716 [movl.s %esp, %ebp],,
3717 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3718 [Define if your assembler supports the swap suffix.])])
3720 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3721 gcc_cv_as_ix86_diff_sect_delta,,,
3729 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3730 [Define if your assembler supports the subtraction of symbols in different sections.])])
3732 # These two are used unconditionally by i386.[ch]; it is to be defined
3733 # to 1 if the feature is present, 0 otherwise.
3734 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3735 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3741 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3742 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3743 [Define true if the assembler supports '.long foo@GOTOFF'.])
3745 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3746 gcc_cv_as_ix86_rep_lock_prefix,,,
3748 lock addl %edi, (%eax,%esi)
3749 lock orl $0, (%esp)],,
3750 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3751 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3753 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3754 gcc_cv_as_ix86_tlsgdplt,,,
3755 [call tls_gd@tlsgdplt],
3756 [if test x$gcc_cv_ld != x \
3757 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3758 gcc_cv_as_ix86_tlsgdplt=yes
3761 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3762 [Define if your assembler and linker support @tlsgdplt.])])
3764 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3765 gcc_cv_as_ix86_tlsldmplt,,,
3767 call tls_ld@tlsldmplt],
3768 [if test x$gcc_cv_ld != x \
3769 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3770 gcc_cv_as_ix86_tlsldmplt=yes
3773 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3774 [Define if your assembler and linker support @tlsldmplt.])])
3779 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3780 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3782 addl r15 = @ltoffx(x#), gp
3784 ld8.mov r16 = [[r15]], x#],,
3785 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3786 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3792 *-*-aix*) conftest_s=' .machine "pwr5"
3796 gcc_GAS_CHECK_FEATURE([.machine directive support],
3797 gcc_cv_as_machine_directive,,,
3798 [ .machine ppc7400])
3799 if test x$gcc_cv_as_machine_directive != xyes; then
3800 echo "*** This target requires an assembler supporting \".machine\"" >&2
3801 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3802 test x$build = x$target && exit 1
3806 *) conftest_s=' .machine power4
3811 gcc_GAS_CHECK_FEATURE([mfcr field support],
3812 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3814 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3815 [Define if your assembler supports mfcr field.])])
3818 *-*-aix*) conftest_s=' .machine "pwr5"
3821 *) conftest_s=' .machine power5
3826 gcc_GAS_CHECK_FEATURE([popcntb support],
3827 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3829 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3830 [Define if your assembler supports popcntb field.])])
3833 *-*-aix*) conftest_s=' .machine "pwr5x"
3836 *) conftest_s=' .machine power5
3841 gcc_GAS_CHECK_FEATURE([fp round support],
3842 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3844 [AC_DEFINE(HAVE_AS_FPRND, 1,
3845 [Define if your assembler supports fprnd.])])
3848 *-*-aix*) conftest_s=' .machine "pwr6"
3851 *) conftest_s=' .machine power6
3856 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3857 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3859 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3860 [Define if your assembler supports mffgpr and mftgpr.])])
3863 *-*-aix*) conftest_s=' .csect .text[[PR]]
3865 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3869 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3870 *) conftest_s=' .text
3872 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3875 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3876 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3878 [AC_DEFINE(HAVE_AS_REL16, 1,
3879 [Define if your assembler supports R_PPC_REL16 relocs.])])
3882 *-*-aix*) conftest_s=' .machine "pwr6"
3885 *) conftest_s=' .machine power6
3890 gcc_GAS_CHECK_FEATURE([compare bytes support],
3891 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3893 [AC_DEFINE(HAVE_AS_CMPB, 1,
3894 [Define if your assembler supports cmpb.])])
3897 *-*-aix*) conftest_s=' .machine "pwr6"
3900 *) conftest_s=' .machine power6
3905 gcc_GAS_CHECK_FEATURE([decimal float support],
3906 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3908 [AC_DEFINE(HAVE_AS_DFP, 1,
3909 [Define if your assembler supports DFP instructions.])])
3912 *-*-aix*) conftest_s=' .machine "pwr7"
3915 *) conftest_s=' .machine power7
3920 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3921 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3923 [AC_DEFINE(HAVE_AS_VSX, 1,
3924 [Define if your assembler supports VSX instructions.])])
3927 *-*-aix*) conftest_s=' .machine "pwr7"
3930 *) conftest_s=' .machine power7
3935 gcc_GAS_CHECK_FEATURE([popcntd support],
3936 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3938 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3939 [Define if your assembler supports POPCNTD instructions.])])
3942 *-*-aix*) conftest_s=' .csect .text[[PR]]
3944 *) conftest_s=' .text
3948 gcc_GAS_CHECK_FEATURE([lwsync support],
3949 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3951 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3952 [Define if your assembler supports LWSYNC instructions.])])
3955 *-*-aix*) conftest_s=' .machine "476"
3958 *) conftest_s=' .machine "476"
3963 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3964 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3966 [AC_DEFINE(HAVE_AS_DCI, 1,
3967 [Define if your assembler supports the DCI/ICI instructions.])])
3969 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3970 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3971 [.gnu_attribute 4,1],,
3972 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3973 [Define if your assembler supports .gnu_attribute.])])
3975 gcc_GAS_CHECK_FEATURE([tls marker support],
3976 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3977 [ bl __tls_get_addr(x@tlsgd)],,
3978 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3979 [Define if your assembler supports arg info for __tls_get_addr.])])
3983 gcc_GAS_CHECK_FEATURE([.ref support],
3984 gcc_cv_as_aix_ref, [2.21.0],,
3985 [ .csect stuff[[rw]]
3991 [AC_DEFINE(HAVE_AS_REF, 1,
3992 [Define if your assembler supports .ref])])
3998 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3999 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4000 [ lw $4,%gp_rel(foo)($4)],,
4001 [if test x$target_cpu_default = x
4002 then target_cpu_default=MASK_EXPLICIT_RELOCS
4003 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4005 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4006 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4007 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4008 [Define if the assembler understands -mno-shared.])])
4010 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4011 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4012 [.gnu_attribute 4,1],,
4013 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4014 [Define if your assembler supports .gnu_attribute.])])
4016 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4017 gcc_cv_as_mips_dtprelword, [2,18,0],,
4018 [.section .tdata,"awT",@progbits
4022 .dtprelword x+0x8000],,
4023 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4024 [Define if your assembler supports .dtprelword.])])
4026 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4027 gcc_cv_as_mips_dspr1_mult,,,
4037 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4038 [Define if your assembler supports DSPR1 mult.])])
4040 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4041 gcc_cv_as_ld_jalr_reloc=no
4042 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4043 if test $in_tree_ld = yes ; then
4044 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4045 && test $in_tree_ld_is_elf = yes; then
4046 gcc_cv_as_ld_jalr_reloc=yes
4048 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4049 echo ' .ent x' > conftest.s
4050 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4051 echo ' ld $25,%call16(y)($28)' >> conftest.s
4052 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4053 echo '1: jalr $25' >> conftest.s
4054 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4055 echo '1: jalr $25' >> conftest.s
4056 echo ' .end x' >> conftest.s
4057 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4058 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4059 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4060 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4061 gcc_cv_as_ld_jalr_reloc=yes
4067 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4068 if test x$target_cpu_default = x; then
4069 target_cpu_default=MASK_RELAX_PIC_CALLS
4071 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4074 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4076 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4077 [gcc_cv_ld_mips_personality_relaxation],
4078 [gcc_cv_ld_mips_personality_relaxation=no
4079 if test $in_tree_ld = yes ; then
4080 if test "$gcc_cv_gld_major_version" -eq 2 \
4081 -a "$gcc_cv_gld_minor_version" -ge 21 \
4082 -o "$gcc_cv_gld_major_version" -gt 2; then
4083 gcc_cv_ld_mips_personality_relaxation=yes
4085 elif test x$gcc_cv_as != x \
4086 -a x$gcc_cv_ld != x \
4087 -a x$gcc_cv_readelf != x ; then
4088 cat > conftest.s <<EOF
4090 .cfi_personality 0x80,indirect_ptr
4097 .section .data,"aw",@progbits
4101 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4102 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4103 if $gcc_cv_readelf -d conftest 2>&1 \
4104 | grep TEXTREL > /dev/null 2>&1; then
4106 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4107 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4110 gcc_cv_ld_mips_personality_relaxation=yes
4114 rm -f conftest.s conftest.o conftest])
4115 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4116 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4117 [Define if your linker can relax absolute .eh_frame personality
4118 pointers into PC-relative form.])
4123 # Mips and HP-UX need the GNU assembler.
4124 # Linux on IA64 might be able to use the Intel assembler.
4127 mips*-*-* | *-*-hpux* )
4128 if test x$gas_flag = xyes \
4129 || test x"$host" != x"$build" \
4130 || test ! -x "$gcc_cv_as" \
4131 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4134 echo "*** This configuration requires the GNU assembler" >&2
4140 # ??? Not all targets support dwarf2 debug_line, even within a version
4141 # of gas. Moreover, we need to emit a valid instruction to trigger any
4142 # info to the output file. So, as supported targets are added to gas 2.11,
4143 # add some instruction here to (also) show we expect this might work.
4144 # ??? Once 2.11 is released, probably need to add first known working
4145 # version to the per-target configury.
4147 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4148 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4158 if test x"$insn" != x; then
4160 .file 1 \"conftest.s\"
4163 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4164 gcc_cv_as_dwarf2_debug_line,
4165 [elf,2,11,0],, [$conftest_s],
4166 [if test x$gcc_cv_objdump != x \
4167 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4168 | grep debug_line > /dev/null 2>&1; then
4169 gcc_cv_as_dwarf2_debug_line=yes
4172 # The .debug_line file table must be in the exact order that
4173 # we specified the files, since these indices are also used
4174 # by DW_AT_decl_file. Approximate this test by testing if
4175 # the assembler bitches if the same index is assigned twice.
4176 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4177 gcc_cv_as_dwarf2_file_buggy,,,
4181 if test $gcc_cv_as_dwarf2_debug_line = yes \
4182 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4183 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4184 [Define if your assembler supports dwarf2 .file/.loc directives,
4185 and preserves file table indices exactly as given.])
4188 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4189 gcc_cv_as_gdwarf2_flag,
4190 [elf,2,11,0], [--gdwarf2], [$insn],,
4191 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4192 [Define if your assembler supports the --gdwarf2 option.])])
4194 gcc_GAS_CHECK_FEATURE([--gstabs option],
4195 gcc_cv_as_gstabs_flag,
4196 [elf,2,11,0], [--gstabs], [$insn],
4197 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4198 # and warns about it, but still exits successfully. So check for
4200 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4202 else gcc_cv_as_gstabs_flag=yes
4204 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4205 [Define if your assembler supports the --gstabs option.])])
4207 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4208 gcc_cv_as_debug_prefix_map_flag,
4209 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4210 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4211 [Define if your assembler supports the --debug-prefix-map option.])])
4214 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4217 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4218 [Define if your assembler supports .lcomm with an alignment field.])])
4220 AC_ARG_ENABLE(gnu-unique-object,
4221 [AS_HELP_STRING([--enable-gnu-unique-object],
4222 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4223 [case $enable_gnu_unique_object in
4225 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4226 Valid choices are 'yes' and 'no'.]) ;;
4228 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4230 [.type foo, '$target_type_format_char'gnu_unique_object],,
4231 # We need to unquote above to to use the definition from config.gcc.
4232 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4233 [[if test x$host = x$build -a x$host = x$target &&
4234 ldd --version 2>/dev/null &&
4235 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4236 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4237 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4238 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4239 if test "$glibcnum" -ge 2011 ; then
4240 enable_gnu_unique_object=yes
4243 if test x$enable_gnu_unique_object = xyes; then
4244 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4245 [Define if your assembler supports @gnu_unique_object.])
4248 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4249 [gcc_cv_as_line_zero],
4250 [gcc_cv_as_line_zero=no
4251 if test $in_tree_gas = yes; then
4252 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4253 elif test "x$gcc_cv_as" != x; then
4254 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4255 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4256 test "x`cat conftest.out`" = x
4258 gcc_cv_as_line_zero=yes
4260 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4261 cat conftest.s >&AS_MESSAGE_LOG_FD
4262 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4263 cat conftest.out >&AS_MESSAGE_LOG_FD
4265 rm -f conftest.o conftest.s conftest.out
4267 if test "x$gcc_cv_as_line_zero" = xyes; then
4268 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4269 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4272 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4273 gcc_cv_ld_eh_frame_hdr=no
4274 if test $in_tree_ld = yes ; then
4275 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4276 && test $in_tree_ld_is_elf = yes; then
4277 gcc_cv_ld_eh_frame_hdr=yes
4279 elif test x$gcc_cv_ld != x; then
4280 if echo "$ld_ver" | grep GNU > /dev/null; then
4281 # Check if linker supports --eh-frame-hdr option
4282 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4283 gcc_cv_ld_eh_frame_hdr=yes
4288 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4289 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4290 gcc_cv_ld_eh_frame_hdr=yes
4296 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4297 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4298 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4299 [Define if your linker supports .eh_frame_hdr.])
4301 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4303 AC_MSG_CHECKING(linker position independent executable support)
4305 if test $in_tree_ld = yes ; then
4306 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4307 && test $in_tree_ld_is_elf = yes; then
4310 elif test x$gcc_cv_ld != x; then
4311 # Check if linker supports -pie option
4312 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4316 if test x"$gcc_cv_ld_pie" = xyes; then
4317 AC_DEFINE(HAVE_LD_PIE, 1,
4318 [Define if your linker supports -pie option.])
4320 AC_MSG_RESULT($gcc_cv_ld_pie)
4322 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4323 gcc_cv_ld_eh_gc_sections=no
4324 if test $in_tree_ld = yes ; then
4325 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4326 && test $in_tree_ld_is_elf = yes; then
4327 gcc_cv_ld_eh_gc_sections=yes
4329 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4330 cat > conftest.s <<EOF
4333 .type _start, @function
4336 .size _start, .-_start
4337 .section .text.foo,"ax",@progbits
4338 .type foo, @function
4342 .section .gcc_except_table.foo,"a",@progbits
4345 .section .eh_frame,"a",@progbits
4348 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4349 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4350 | grep "gc-sections option ignored" > /dev/null; then
4351 gcc_cv_ld_eh_gc_sections=no
4352 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4353 | grep gcc_except_table > /dev/null; then
4354 gcc_cv_ld_eh_gc_sections=yes
4355 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4356 if test x$gcc_cv_as_comdat_group != xyes; then
4357 gcc_cv_ld_eh_gc_sections=no
4358 cat > conftest.s <<EOF
4361 .type _start, @function
4364 .size _start, .-_start
4365 .section .gnu.linkonce.t.foo,"ax",@progbits
4366 .type foo, @function
4370 .section .gcc_except_table.foo,"a",@progbits
4373 .section .eh_frame,"a",@progbits
4376 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4377 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4378 | grep "gc-sections option ignored" > /dev/null; then
4379 gcc_cv_ld_eh_gc_sections=no
4380 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4381 | grep gcc_except_table > /dev/null; then
4382 gcc_cv_ld_eh_gc_sections=yes
4388 rm -f conftest.s conftest.o conftest
4392 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4393 gcc_cv_ld_eh_gc_sections=no
4396 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4397 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4398 [Define if your linker supports garbage collection of
4399 sections in presence of EH frames.])
4401 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4403 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4404 gcc_cv_ld_eh_gc_sections_bug=no
4405 if test $in_tree_ld = yes ; then
4406 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4407 && test $in_tree_ld_is_elf = yes; then
4408 gcc_cv_ld_eh_gc_sections_bug=yes
4410 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
4411 gcc_cv_ld_eh_gc_sections_bug=yes
4412 cat > conftest.s <<EOF
4415 .type _start, @function
4418 .size _start, .-_start
4419 .section .text.startup.foo,"ax",@progbits
4420 .type foo, @function
4424 .section .gcc_except_table.foo,"a",@progbits
4427 .section .eh_frame,"a",@progbits
4430 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4431 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4432 | grep "gc-sections option ignored" > /dev/null; then
4434 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4435 | grep gcc_except_table > /dev/null; then
4436 gcc_cv_ld_eh_gc_sections_bug=no
4439 rm -f conftest.s conftest.o conftest
4441 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4442 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4443 [Define if your linker has buggy garbage collection of
4444 sections support when .text.startup.foo like sections are used.])
4446 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4452 AC_CACHE_CHECK(linker --as-needed support,
4453 gcc_cv_ld_as_needed,
4454 [gcc_cv_ld_as_needed=no
4455 if test $in_tree_ld = yes ; then
4456 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4457 && test $in_tree_ld_is_elf = yes; then
4458 gcc_cv_ld_as_needed=yes
4460 elif test x$gcc_cv_ld != x; then
4461 # Check if linker supports --as-needed and --no-as-needed options
4462 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4463 gcc_cv_ld_as_needed=yes
4467 if test x"$gcc_cv_ld_as_needed" = xyes; then
4468 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4469 [Define if your linker supports --as-needed and --no-as-needed options.])
4472 case "$target:$tm_file" in
4473 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4476 emul_name="-melf64ppc"
4479 emul_name="-melf64ppc_fbsd"
4482 AC_CACHE_CHECK(linker support for omitting dot symbols,
4483 gcc_cv_ld_no_dot_syms,
4484 [gcc_cv_ld_no_dot_syms=no
4485 if test $in_tree_ld = yes ; then
4486 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4487 gcc_cv_ld_no_dot_syms=yes
4489 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4490 cat > conftest1.s <<EOF
4494 cat > conftest2.s <<EOF
4495 .section ".opd","aw"
4500 .quad .LEfoo,.TOC.@tocbase,0
4506 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4507 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4508 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4509 gcc_cv_ld_no_dot_syms=yes
4511 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4514 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4515 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4516 [Define if your PowerPC64 linker only needs function descriptor syms.])
4519 AC_CACHE_CHECK(linker large toc support,
4520 gcc_cv_ld_large_toc,
4521 [gcc_cv_ld_large_toc=no
4522 if test $in_tree_ld = yes ; then
4523 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4524 gcc_cv_ld_large_toc=yes
4526 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4527 cat > conftest.s <<EOF
4528 .section ".tbss","awT",@nobits
4534 addis 9,13,ie0@got@tprel@ha
4535 ld 9,ie0@got@tprel@l(9)
4537 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4538 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4539 gcc_cv_ld_large_toc=yes
4541 rm -f conftest conftest.o conftest.s
4544 if test x"$gcc_cv_ld_large_toc" = xyes; then
4545 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4546 [Define if your PowerPC64 linker supports a large TOC.])
4551 AC_CACHE_CHECK(linker --build-id support,
4553 [gcc_cv_ld_buildid=no
4554 if test $in_tree_ld = yes ; then
4555 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4556 "$gcc_cv_gld_minor_version" -ge 18 -o \
4557 "$gcc_cv_gld_major_version" -gt 2 \
4558 && test $in_tree_ld_is_elf = yes; then
4559 gcc_cv_ld_buildid=yes
4561 elif test x$gcc_cv_ld != x; then
4562 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4563 gcc_cv_ld_buildid=yes
4566 if test x"$gcc_cv_ld_buildid" = xyes; then
4567 AC_DEFINE(HAVE_LD_BUILDID, 1,
4568 [Define if your linker supports --build-id.])
4571 AC_ARG_ENABLE(linker-build-id,
4572 [AS_HELP_STRING([--enable-linker-build-id],
4573 [compiler will always pass --build-id to linker])],
4575 enable_linker_build_id=no)
4577 if test x"$enable_linker_build_id" = xyes; then
4578 if test x"$gcc_cv_ld_buildid" = xyes; then
4579 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4580 [Define if gcc should always pass --build-id to linker.])
4582 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4586 # In binutils 2.21, GNU ld gained support for new emulations fully
4587 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4588 AC_CACHE_CHECK(linker *_sol2 emulation support,
4589 gcc_cv_ld_sol2_emulation,
4590 [gcc_cv_ld_sol2_emulation=no
4591 if test $in_tree_ld = yes ; then
4592 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4593 "$gcc_cv_gld_minor_version" -ge 21 -o \
4594 "$gcc_cv_gld_major_version" -gt 2 \
4595 && test $in_tree_ld_is_elf = yes; then
4596 gcc_cv_ld_sol2_emulation=yes
4598 elif test x$gcc_cv_ld != x; then
4599 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4600 grep _sol2 > /dev/null; then
4601 gcc_cv_ld_sol2_emulation=yes
4604 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4605 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4606 [Define if your linker supports the *_sol2 emulations.])
4609 AC_CACHE_CHECK(linker --sysroot support,
4611 [gcc_cv_ld_sysroot=no
4612 if test $in_tree_ld = yes ; then
4613 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4614 gcc_cv_ld_sysroot=yes
4616 elif test x$gcc_cv_ld != x; then
4617 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4618 gcc_cv_ld_sysroot=yes
4621 if test x"$gcc_cv_ld_sysroot" = xyes; then
4622 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4623 [Define if your linker supports --sysroot.])
4626 if test x$with_sysroot = x && test x$host = x$target \
4627 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4628 && test "$prefix" != "NONE"; then
4629 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4630 [Define to PREFIX/include if cpp should also search that directory.])
4633 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4634 if test "x$with_headers" != x; then
4635 target_header_dir=$with_headers
4636 elif test "x$with_sysroot" = x; then
4637 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4638 elif test "x$with_build_sysroot" != "x"; then
4639 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4640 elif test "x$with_sysroot" = xyes; then
4641 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4643 target_header_dir="${with_sysroot}${native_system_header_dir}"
4646 target_header_dir=${native_system_header_dir}
4649 # Test for stack protector support in target C library.
4650 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4651 gcc_cv_libc_provides_ssp,
4652 [gcc_cv_libc_provides_ssp=no
4654 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4655 [# glibc 2.4 and later provides __stack_chk_fail and
4656 # either __stack_chk_guard, or TLS access to stack guard canary.
4657 if test -f $target_header_dir/features.h \
4658 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4659 $target_header_dir/features.h > /dev/null; then
4660 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4661 $target_header_dir/features.h > /dev/null; then
4662 gcc_cv_libc_provides_ssp=yes
4663 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4664 $target_header_dir/features.h > /dev/null \
4665 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4666 $target_header_dir/features.h > /dev/null; then
4667 gcc_cv_libc_provides_ssp=yes
4668 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4669 $target_header_dir/features.h > /dev/null && \
4670 test -f $target_header_dir/bits/uClibc_config.h && \
4671 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4672 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4673 gcc_cv_libc_provides_ssp=yes
4678 # Avoid complicated tests (see
4679 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4680 # simply assert that glibc does provide this, which is true for all
4681 # realistically usable GNU/Hurd configurations.
4682 gcc_cv_libc_provides_ssp=yes;;
4683 *-*-darwin* | *-*-freebsd*)
4684 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4685 [echo "no __stack_chk_fail on this target"])
4687 *) gcc_cv_libc_provides_ssp=no ;;
4690 if test x$gcc_cv_libc_provides_ssp = xyes; then
4691 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4692 [Define if your target C library provides stack protector support])
4695 # Test for <sys/sdt.h> on the target.
4696 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4697 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4699 if test -f $target_header_dir/sys/sdt.h; then
4701 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4702 [Define if your target C library provides sys/sdt.h])
4704 AC_MSG_RESULT($have_sys_sdt_h)
4706 # Check if TFmode long double should be used by default or not.
4707 # Some glibc targets used DFmode long double, but with glibc 2.4
4708 # and later they can use TFmode.
4710 powerpc*-*-linux* | \
4714 AC_ARG_WITH(long-double-128,
4715 [AS_HELP_STRING([--with-long-double-128],
4716 [use 128-bit long double by default])],
4717 gcc_cv_target_ldbl128="$with_long_double_128",
4718 [[gcc_cv_target_ldbl128=no
4719 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4720 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4721 && gcc_cv_target_ldbl128=yes
4725 if test x$gcc_cv_target_ldbl128 = xyes; then
4726 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4727 [Define if TFmode long double should be the default])
4730 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4731 gcc_cv_target_dl_iterate_phdr=unknown
4733 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4734 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4735 # libdl there, both complicating its use and breaking compatibility
4736 # between Solaris 10 updates.
4737 *-*-solaris2.1[[1-9]]*)
4738 # <link.h> needs both a dl_iterate_phdr declaration and support for
4739 # compilation with largefile support.
4740 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4741 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4742 gcc_cv_target_dl_iterate_phdr=yes
4744 gcc_cv_target_dl_iterate_phdr=no
4748 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4749 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4750 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4751 [Define if your target C library provides the `dl_iterate_phdr' function.])
4753 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4755 # Find out what GC implementation we want, or may, use.
4757 [AS_HELP_STRING([--with-gc={page,zone}],
4758 [choose the garbage collection mechanism to use
4759 with the compiler])],
4766 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4769 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4774 echo "Using $GGC for garbage collection."
4776 # Libraries to use on the host. This will normally be set by the top
4777 # level Makefile. Here we simply capture the value for our Makefile.
4778 if test -z "${HOST_LIBS+set}"; then
4783 # Use the system's zlib library.
4785 zlibinc="-I\$(srcdir)/../zlib"
4786 AC_ARG_WITH(system-zlib,
4787 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4794 dnl Very limited version of automake's enable-maintainer-mode
4796 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4797 dnl maintainer-mode is disabled by default
4798 AC_ARG_ENABLE(maintainer-mode,
4799 [AS_HELP_STRING([--enable-maintainer-mode],
4800 [enable make rules and dependencies not useful
4801 (and sometimes confusing) to the casual installer])],
4802 maintainer_mode=$enableval,
4805 AC_MSG_RESULT($maintainer_mode)
4807 if test "$maintainer_mode" = "yes"; then
4818 # Make empty files to contain the specs and options for each language.
4819 # Then add #include lines to for a compiler that has specs and/or options.
4825 # These (without "all_") are set in each config-lang.in.
4826 # `language' must be a single word so is spelled singularly.
4829 all_outputs='Makefile'
4830 # List of language makefile fragments.
4832 # Additional files for gengtype
4833 all_gtfiles="$target_gtfiles"
4835 # These are the languages that are set in --enable-languages,
4836 # and are available in the GCC tree.
4837 all_selected_languages=
4839 # Add the language fragments.
4840 # Languages are added via two mechanisms. Some information must be
4841 # recorded in makefile variables, these are defined in config-lang.in.
4842 # We accumulate them and plug them into the main Makefile.
4843 # The other mechanism is a set of hooks for each of the main targets
4844 # like `clean', `install', etc.
4846 language_hooks="Make-hooks"
4848 for lang in ${srcdir}/*/config-lang.in
4851 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4853 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4854 if test "x$lang_alias" = x
4856 echo "$lang doesn't set \$language." 1>&2
4859 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4860 subdirs="$subdirs $subdir"
4862 # $gcc_subdir is where the gcc integration files are to be found
4863 # for a language, both for internal compiler purposes (compiler
4864 # sources implementing front-end to GCC tree converters), and for
4865 # build infrastructure purposes (Make-lang.in, etc.)
4867 # This will be <subdir> (relative to $srcdir) if a line like
4868 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4869 # is found in <langdir>/config-lang.in, and will remain <langdir>
4872 # Except for the language alias (fetched above), the regular
4873 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4874 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4875 # only this and the language alias.
4877 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4878 if [ "$gcc_subdir" = "" ]; then
4879 gcc_subdir="$subdir"
4882 case ",$enable_languages," in
4884 all_selected_languages="$all_selected_languages $lang_alias"
4885 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4886 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4898 . ${srcdir}/$gcc_subdir/config-lang.in
4899 if test "x$language" = x
4901 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4906 case ",$enable_languages," in
4909 for i in $subdir_requires; do
4910 test -f "${srcdir}/$i/config-lang.in" && continue
4918 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4919 if test -f $srcdir/$gcc_subdir/lang.opt; then
4920 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4921 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4923 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4924 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4926 all_languages="$all_languages $language"
4927 all_compilers="$all_compilers $compilers"
4928 all_outputs="$all_outputs $outputs"
4929 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4930 case ",$enable_languages," in
4932 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4934 AC_SUBST(enable_lto)
4940 # Pick up gtfiles for c
4942 . ${srcdir}/c-config-lang.in
4943 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4946 for language in $all_selected_languages
4948 check_languages="$check_languages check-$language"
4951 # We link each language in with a set of hooks, reached indirectly via
4952 # lang.${target}. Only do so for selected languages.
4956 target_list="all.cross start.encap rest.encap tags \
4957 install-common install-man install-info install-pdf install-html dvi \
4958 pdf html uninstall info man srcextra srcman srcinfo \
4959 mostlyclean clean distclean maintainer-clean install-plugin"
4961 for t in $target_list
4964 for lang in $all_selected_languages
4968 echo "lang.$t: $x" >> Make-hooks
4972 # Option include files
4975 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4976 option_includes="option-includes.mk"
4977 AC_SUBST_FILE(option_includes)
4985 echo "dir ." > .gdbinit
4986 echo "dir ${srcdir}" >> .gdbinit
4987 if test x$gdb_needs_out_file_path = xyes
4989 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4991 if test "x$subdirs" != x; then
4994 echo "dir ${srcdir}/$s" >> .gdbinit
4997 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4999 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5000 AC_SUBST(gcc_tooldir)
5003 # Find a directory in which to install a shared libgcc.
5005 AC_ARG_ENABLE(version-specific-runtime-libs,
5006 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5007 [specify that runtime libraries should be
5008 installed in a compiler-specific directory])])
5010 # Substitute configuration variables
5013 AC_SUBST(all_compilers)
5014 AC_SUBST(all_gtfiles)
5015 AC_SUBST(all_lang_makefrags)
5016 AC_SUBST(all_languages)
5017 AC_SUBST(all_selected_languages)
5018 AC_SUBST(build_exeext)
5019 AC_SUBST(build_install_headers_dir)
5020 AC_SUBST(build_xm_file_list)
5021 AC_SUBST(build_xm_include_list)
5022 AC_SUBST(build_xm_defines)
5023 AC_SUBST(build_file_translate)
5024 AC_SUBST(check_languages)
5025 AC_SUBST(cpp_install_dir)
5026 AC_SUBST(xmake_file)
5027 AC_SUBST(tmake_file)
5028 AC_SUBST(TM_ENDIAN_CONFIG)
5029 AC_SUBST(TM_MULTILIB_CONFIG)
5030 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5031 AC_SUBST(extra_gcc_objs)
5032 AC_SUBST(user_headers_inc_next_pre)
5033 AC_SUBST(user_headers_inc_next_post)
5034 AC_SUBST(extra_headers_list)
5035 AC_SUBST(extra_objs)
5036 AC_SUBST(extra_passes)
5037 AC_SUBST(extra_programs)
5038 AC_SUBST(float_h_file)
5039 AC_SUBST(gcc_config_arguments)
5040 AC_SUBST(gcc_gxx_include_dir)
5041 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5042 AC_SUBST(gcc_c_include_dir)
5043 AC_SUBST(host_exeext)
5044 AC_SUBST(host_xm_file_list)
5045 AC_SUBST(host_xm_include_list)
5046 AC_SUBST(host_xm_defines)
5047 AC_SUBST(out_host_hook_obj)
5049 AC_SUBST(lang_opt_files)
5050 AC_SUBST(lang_specs_files)
5051 AC_SUBST(lang_tree_files)
5052 AC_SUBST(local_prefix)
5054 AC_SUBST(objc_boehm_gc)
5056 AC_SUBST(out_object_file)
5057 AC_SUBST(common_out_file)
5058 AC_SUBST(common_out_object_file)
5059 AC_SUBST(tm_file_list)
5060 AC_SUBST(tm_include_list)
5061 AC_SUBST(tm_defines)
5062 AC_SUBST(tm_p_file_list)
5063 AC_SUBST(tm_p_include_list)
5064 AC_SUBST(xm_file_list)
5065 AC_SUBST(xm_include_list)
5066 AC_SUBST(xm_defines)
5067 AC_SUBST(use_gcc_stdint)
5068 AC_SUBST(c_target_objs)
5069 AC_SUBST(cxx_target_objs)
5070 AC_SUBST(fortran_target_objs)
5071 AC_SUBST(target_cpu_default)
5073 AC_SUBST_FILE(language_hooks)
5076 if test x${build} = x${host} ; then
5077 if test x${host} = x${target} ; then
5078 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5080 echo "Links are now set up to build a cross-compiler" 1>&2
5081 echo " from ${host} to ${target}." 1>&2
5084 if test x${host} = x${target} ; then
5085 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5086 echo " for ${target}." 1>&2
5088 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5089 echo " from ${host} to ${target}." 1>&2
5093 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5094 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5096 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5097 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5099 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5100 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5101 if test "x${CLOOGLIBS}" != "x" ; then
5102 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5105 # Check for plugin support
5106 AC_ARG_ENABLE(plugin,
5107 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5108 enable_plugin=$enableval,
5109 enable_plugin=yes; default_plugin=yes)
5115 if test x$build = x$host; then
5116 export_sym_check="nm${exeext} -g"
5117 elif test x$host = x$target; then
5118 export_sym_check="$gcc_cv_nm -g"
5124 if test x$build = x$host; then
5125 export_sym_check="objdump${exeext} -T"
5126 elif test x$host = x$target; then
5127 export_sym_check="$gcc_cv_objdump -T"
5134 if test x"$enable_plugin" = x"yes"; then
5136 AC_MSG_CHECKING([for exported symbols])
5137 if test "x$export_sym_check" != x; then
5138 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5139 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5140 if $export_sym_check conftest | grep foobar > /dev/null; then
5141 : # No need to use a flag
5142 AC_MSG_RESULT([yes])
5144 AC_MSG_RESULT([yes])
5145 AC_MSG_CHECKING([for -rdynamic])
5146 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5147 if $export_sym_check conftest | grep foobar > /dev/null; then
5149 pluginlibs="-rdynamic"
5154 AC_MSG_RESULT([$plugin_rdynamic])
5157 AC_MSG_RESULT([unable to check])
5162 AC_SEARCH_LIBS([dlopen], [dl])
5163 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5164 pluginlibs="$pluginlibs -ldl"
5168 # Check that we can build shared objects with -fPIC -shared
5169 saved_LDFLAGS="$LDFLAGS"
5170 saved_CFLAGS="$CFLAGS"
5173 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5174 CFLAGS="$CFLAGS -fPIC"
5175 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5178 CFLAGS="$CFLAGS -fPIC"
5179 LDFLAGS="$LDFLAGS -fPIC -shared"
5182 AC_MSG_CHECKING([for -fPIC -shared])
5184 [extern int X;],[return X == 0;],
5185 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5186 [AC_MSG_RESULT([no]); have_pic_shared=no])
5187 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5191 LDFLAGS="$saved_LDFLAGS"
5192 CFLAGS="$saved_CFLAGS"
5194 # If plugin support had been requested but not available, fail.
5195 if test x"$enable_plugin" = x"no" ; then
5196 if test x"$default_plugin" != x"yes"; then
5198 Building GCC with plugin support requires a host that supports
5199 -fPIC, -shared, -ldl and -rdynamic.])
5204 AC_SUBST(pluginlibs)
5205 AC_SUBST(enable_plugin)
5206 if test x"$enable_plugin" = x"yes"; then
5207 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5211 AC_ARG_ENABLE(libquadmath-support,
5212 [AS_HELP_STRING([--disable-libquadmath-support],
5213 [disable libquadmath support for Fortran])],
5214 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5215 ENABLE_LIBQUADMATH_SUPPORT=yes)
5216 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5217 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5218 [Define to 1 to enable libquadmath support])
5222 # Specify what hash style to use by default.
5223 AC_ARG_WITH([linker-hash-style],
5224 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5225 [specify the linker hash style])],
5226 [case x"$withval" in
5228 LINKER_HASH_STYLE=sysv
5231 LINKER_HASH_STYLE=gnu
5234 LINKER_HASH_STYLE=both
5237 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5240 [LINKER_HASH_STYLE=''])
5241 if test x"${LINKER_HASH_STYLE}" != x; then
5242 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5243 [The linker hash style])
5246 # Configure the subdirectories
5247 # AC_CONFIG_SUBDIRS($subdirs)
5249 # Create the Makefile
5250 # and configure language subdirectories
5251 AC_CONFIG_FILES($all_outputs)
5253 AC_CONFIG_COMMANDS([default],
5255 case ${CONFIG_HEADERS} in
5256 *auto-host.h:config.in*)
5259 # Make sure all the subdirs exist.
5260 for d in $subdirs doc build common c-family
5262 test -d $d || mkdir $d
5265 [subdirs='$subdirs'])